WO2017156603A1 - Mechanical actuation device with automatic energy compensation for primary scrapers in conveyor belts - Google Patents
Mechanical actuation device with automatic energy compensation for primary scrapers in conveyor belts Download PDFInfo
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- WO2017156603A1 WO2017156603A1 PCT/BR2017/000043 BR2017000043W WO2017156603A1 WO 2017156603 A1 WO2017156603 A1 WO 2017156603A1 BR 2017000043 W BR2017000043 W BR 2017000043W WO 2017156603 A1 WO2017156603 A1 WO 2017156603A1
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- Prior art keywords
- blades
- spring
- force
- mechanical
- wear
- Prior art date
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G45/00—Lubricating, cleaning, or clearing devices
- B65G45/10—Cleaning devices
- B65G45/12—Cleaning devices comprising scrapers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G45/00—Lubricating, cleaning, or clearing devices
- B65G45/10—Cleaning devices
- B65G45/12—Cleaning devices comprising scrapers
- B65G45/16—Cleaning devices comprising scrapers with scraper biasing means
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G45/00—Lubricating, cleaning, or clearing devices
- B65G45/10—Cleaning devices
- B65G45/24—Cleaning devices comprising plural diverse cleaning devices
Definitions
- the present utility model patent refers to Energy Self-compensating Mechanical Drive Device for driving primary scrapers, being applied in the mining, steel and fertilizer sectors, among others that use conveyor belts for moving materials to I grated for cleaning by scraping the conveyor belts.
- the device described here is fully mechanical, without dependence on external energy action, providing constant pressure to the scraper with a single adjustment, since as the blades wear and reduce their size, there is balance in function of the spring force exerted by the lever arm.
- the present patent allows the reduction of the traffic of people in the work area, avoiding possible accidents and reducing the programming of stops for blade changes, which favors the maintenance of the equipment. Because the pressure of the blades against the conveyor belt is constant, the scraping efficiency is guaranteed until the end of the blade life. For this reason, the working course is pre-set and the adjustment is unique only at the time of blade installation or replacement.
- Scrapers are simple mechanical equipment for scraping the conveyor belts and are considered primary when positioned by pressing the conveyor belt against the drive pulley. They are made up of wear blades fitted and / or fixed in a metal structure, in the function of supporting and driving the scraping system.
- the drive that presses the blades against the conveyor belt, performing the scraping may be performed by a spring-loaded mechanical device that requires periodic adjustments during the life of the scraper blades.
- the drive setting is constant, therefore, the high cost of labor and exposure to the risk of accidents due to the circulation in the work area are inevitable.
- Hydraulic driven scraper Spring driven is replaced by hydraulic cylinders, maintaining constant pressure. The only human intervention would be to replace the scraper blades, but it has a high cost of implementation and maintenance of the hydraulic system, requires near-site independent hydraulic unit, auxiliary energy dependent system and requires periodic maintenance of hydraulic cylinders and valves.
- Electric drive scraper Spring drive is replaced by electric actuators, maintaining constant pressure. The only human intervention would be to replace the scraper blades, but it has a high cost of implementation, requires physical space for mounting of electrical control panel, system dependent on auxiliary energy, offers additional risk of lightning to system operators.
- the present patent discloses a fully mechanical self-compensating mechanical power drive for primary scrapers, without dependence on external energy action, providing constant force to the scraper after blade replacement with a single adjustment.
- the force applied to the lever arm approaches the torque point or moment of force. The closer to the torque, the greater the force applied, compensating for reduced force by spring displacement.
- Other minor adjustments in force distribution are corrected for blade contact area variation while maintaining constant pressure.
- [016] - reduces the traffic of people in the area avoiding possible accidents, as it reduces the schedule of conveyor belt stops to change blades, favoring equipment maintenance; therefore, the course of work is predefined and the adjustment is unique, made at the time of blade installation or replacement;
- [020] - features a scraper bending and breaking protection device installed as a limiting feature to prevent involuntary shaft rotation;
- Figure 1 illustrates perspective view of the scraper.
- Figure 2 illustrates the Mechanical Alignment Device
- Figure 3 illustrates detail of the left scraper support with the fully free Energy Self-aligning Mechanical Alignment Device, without spring tensioning, indicating the beginning of blade life.
- Figure 4 illustrates the scraper positioned against the pulley at the beginning of its life, with its larger lever arm (“D”) and blades full life indicator (“C").
- Figures 4, 5, 6, 7 and 8 illustrate the positioning of the scraper in relation to the pulley highlighting the wear path of the blades through their inclination angle ( ⁇ ) as well as the increasing wear ("P"). ) of the contact area of the blades with the pulley and the pressure compensated by the moment of force, where the distance (“D"), which represents the lever arm, is gradually decreasing.
- Figures 4, 5, 6, 7 and 8 also illustrate the short stroke ("C") corresponding to the life of the blades, their beginning being shown in Figure 4 and their end in Figure 8 where the nut (1.5) abuts the bracket.
- the scraper assembly (9) consists of right support (2), left support (3), blades (4) and support shaft (6); each bracket (2, 3) is fixed on the outer region of the conveyor transfer kicks by welding, bolts, spacer shoes, among others.
- the Energy Self-compensating Mechanical Drive Device (1) consists of a swivel bracket (1.1) welded to the locking plate (1.2), fitted and welded to the shaft end (6).
- the device (1) has a direct access, where once the blades (4), fitted or fixed to the support shaft (6), will be tensioned against the motor pulley (5). by compressing the springs (1.7) defined by the spacing indicator ("A") between the two spring guides (1.6), by tightening the nut (1.8) and lock nut (1.9) so that the indicator (7) coincide with the rib (8), indicating the beginning of the blade life (4).
- each Energy Self-Aligning Mechanical Drive Device (1) rotates freely through the swivel bracket (1.1) relative to the bearing housing (6.1) of the shaft end (6) allowing to be positioned in several directions and fixed later, avoiding possible obstacles in the field.
- a safety device to prevent shaft bending has been added to the bracket drive as the belt exerts a force by pulling the blade (4) past the thin limit! of wear.
- the safety device represented by the nut (1.5), which is fixed to the rod (1.4), moves towards the tensioner guide support (1.3).
- this nut (1.5) touches the tensioner guide bracket (1.3)
- the shaft is immobilized avoiding buckling, which also indicates the moment to change the blades (4).
- Fig.4 shows the scraper (9) positioned against the pulley (5) at the beginning of its life, with its larger lever arm (“D") and the total life indicator ("C") of the blades (4).
Abstract
The present application to a utility model relates to a mechanical actuation device with automatic energy compensation for actuating primary scrapers, and is used in the field of mining and in other fields that use conveyor belts for moving materials that are cleaned by being scraped by the conveyor belts. The present device is entirely mechanical and does not depend on external energy, providing a constant pressure to the scraper with a single adjustment, since as the blades wear down and are reduced in size, the torque applied by the spring in the lever arm of the torque application point is balanced because the closer the the spring is to the torque, the greater will be the force applied, compensating the decrease in the force caused by the shift of the spring, wherein adjustments to force distribution are corrected by the variation in the contact surface of the blade, keeping the pressure constant.
Description
"DISPOSITIVO MECÂNICO DE ACIONAMENTO AUTOCOMPENSADOR DE ENERGIA PARA RASPADORES PRIMÁRIOS EM CORREIAS "MECHANICAL ENERGY DRIVE MECHANICAL DEVICE FOR PRIMARY BELT SCRAPERS
TRANSPORTADORAS." CARRIERS. "
[01] A presente patente de modelo de utilidade refere-se a Dispositivo Mecânico de Acionamento Autocompensador de Energia para acionamento de raspadores primários, sendo aplicado nos setores de mineração, siderurgia, fertilizantes, entre outros que utilizam correias transportadoras para o deslocamento de materiais a granei, para limpeza através de raspagem das correias transportadora. [01] The present utility model patent refers to Energy Self-compensating Mechanical Drive Device for driving primary scrapers, being applied in the mining, steel and fertilizer sectors, among others that use conveyor belts for moving materials to I grated for cleaning by scraping the conveyor belts.
[02] O dispositivo ora descrito é totalmente mecânico, sem dependência de ação de energia externa, fornecendo pressão constante ao raspador com uma única regulagem, uma vez que à medida que as lâminas vão sofrendo desgaste e reduzem o seu tamanho, há o equilíbrio em função do momento de força exercida peia mola no braço de alavanca. [02] The device described here is fully mechanical, without dependence on external energy action, providing constant pressure to the scraper with a single adjustment, since as the blades wear and reduce their size, there is balance in function of the spring force exerted by the lever arm.
[03] A presente patente permite a redução do trânsito de pessoas na área de trabalho, evitando possíveis acidentes e reduzindo a programação de paradas para troca de lâminas, o que favorece a manutenção do equipamento. Pelo fato de a pressão das lâminas contra a correia transportadora ser constante, a eficiência de raspagem é garantida até o final da vida útil das lâminas. Por isto, o curso de trabalho é pré-definido e a regulagem é única, feita somente no momento da instalação ou troca das lâminas. [03] The present patent allows the reduction of the traffic of people in the work area, avoiding possible accidents and reducing the programming of stops for blade changes, which favors the maintenance of the equipment. Because the pressure of the blades against the conveyor belt is constant, the scraping efficiency is guaranteed until the end of the blade life. For this reason, the working course is pre-set and the adjustment is unique only at the time of blade installation or replacement.
[04] Raspadores são equipamentos de mecânica simples, para limpeza através de raspagem das correias transportadoras e são considerados primários quando posicionados pressionando a correia transportadora contra a polia motora. São constituídos por lâminas de desgaste encaixadas e/ou fixadas em uma estrutura metálica, na função de suporte e acionamento do sistema de raspagem. [04] Scrapers are simple mechanical equipment for scraping the conveyor belts and are considered primary when positioned by pressing the conveyor belt against the drive pulley. They are made up of wear blades fitted and / or fixed in a metal structure, in the function of supporting and driving the scraping system.
[05] No atual estado da técnica, em raspadores primários, o acionamento que pressiona as lâminas contra a correia transportadora, executando a raspagem, poderá ser realizado por dispositivo mecânico, acíonado por molas, que exige regulagens periódicas durante a vida útil das lâminas raspadoras. Além da substituição das lâminas raspadoras, a regulagem do acionamento é
constante, portanto, o elevado custo com mão de obra e a exposição aos riscos de acidente em razão da circulação da na área de trabalho são inevitáveis. [05] In the present state of the art, on primary scrapers, the drive that presses the blades against the conveyor belt, performing the scraping, may be performed by a spring-loaded mechanical device that requires periodic adjustments during the life of the scraper blades. . In addition to the replacement of the scraper blades, the drive setting is constant, therefore, the high cost of labor and exposure to the risk of accidents due to the circulation in the work area are inevitable.
£06] Existem dispositivos outros que dispensam a regulagem, evitando a presença de funcionários, mas problemas foram evidenciados com estas soluções, tais como: £ 06] There are other devices that do not require regulation, avoiding the presence of employees, but problems were highlighted with these solutions, such as:
[07] Raspador com acionamento pneumático: o acionamento por molas é substituído por bolsas de ar comprimido, mantendo a pressão constante. A única intervenção humana ocorreria na substituição das lâminas raspadoras, porém há necessidade de linhas de ar comprimido, alto índice de manutenção do sistema de alimentação de ar comprimido, necessidade de inspeções constantes para evidenciar vazamentos de ar. [07] Pneumatically driven scraper: Spring-loaded scraper is replaced by compressed air pockets, maintaining constant pressure. The only human intervention would be to replace the scraper blades, but there is need for compressed air lines, high maintenance rate of the compressed air supply system, need for constant inspections to show air leaks.
[08] Raspador com acionamento hidráulico: o acionamento por molas é substituído por cilindros hidráulicos, mantendo a pressão constante. A única intervenção humana ocorreria na substituição das lâminas raspadoras, porém apresenta custo elevado de implantação e manutenção do sistema hidráulico, requer unidade hidráulica independente próxima do local, sistema dependente de energia auxiliar e exige manutenção periódica dos cilindros e válvulas hidráulicas. [08] Hydraulic driven scraper: Spring driven is replaced by hydraulic cylinders, maintaining constant pressure. The only human intervention would be to replace the scraper blades, but it has a high cost of implementation and maintenance of the hydraulic system, requires near-site independent hydraulic unit, auxiliary energy dependent system and requires periodic maintenance of hydraulic cylinders and valves.
[09] Raspador com acionamento elétrico: o acionamento por molas é substituído por atuadores elétricos, mantendo a pressão constante. A única intervenção humana ocorreria na substituição das lâminas raspadoras, porém apresenta custo elevado de implantação, exige espaço físico para montagem de painel elétrico de comando, sistema dependente de energia auxiliar, oferece risco adicional de descargas elétricas aos operadores do sistema. [09] Electric drive scraper: Spring drive is replaced by electric actuators, maintaining constant pressure. The only human intervention would be to replace the scraper blades, but it has a high cost of implementation, requires physical space for mounting of electrical control panel, system dependent on auxiliary energy, offers additional risk of lightning to system operators.
[010] A presente patente apresenta um Dispositivo Mecânico de Acionamento Autocompesador de Energia para Raspadores Primários, totalmente mecânico, sem dependência de ação de energia externa, fornecendo força constante ao raspador após a substituição das lâminas, com uma única regulagem. À medida que as lâminas vão sofrendo desgaste e apresentam a redução do seu tamanho, há aproximação da força aplicada ao braço de alavanca do ponto de torque ou momento de força. Quanto mais próxima do torque, maior será a forca aplicada, compensando a redução da força pelo deslocamento da mola. Outros pequenos ajustes na distribuição de forças são corrigidos na variação da área de contato da lâmina, mantendo-se a pressão constante.
[011] O dispositivo foi desenvolvido a partir da associação entre três conceitos físicos expressos pela mecânica clássica, sendo eles: Lei de Hook, baseada na equação da força da mola (F) = Constante Elástica da mola (k) x deformação da mola (AL); Momento de força ou Torque, baseado na equação que dita o momento (M) « força (F) x distância (d); e Tensão Mecânica, que compartilha a equação de pressão (p) « força (F) x área de aplicação (A). Teoricamente conclui- se pela Lei de Hook que a redução na deformação da mola reduz também a força, e que o ponto de equilíbrio no momento de força é abalado quando ocorre variação na distância de aplicação da força em uma das extremidades. Como na prática este conjunto deveria apresentar proporções irreais para um raspador primário de correia transportadora, os ajustes finais foram dados a partir do perfil de contato da lâmina raspadora contra a correia transportadora pela exposição de uma área que varia ao longo da vida útil da lâmina. [010] The present patent discloses a fully mechanical self-compensating mechanical power drive for primary scrapers, without dependence on external energy action, providing constant force to the scraper after blade replacement with a single adjustment. As the blades wear out and shrink in size, the force applied to the lever arm approaches the torque point or moment of force. The closer to the torque, the greater the force applied, compensating for reduced force by spring displacement. Other minor adjustments in force distribution are corrected for blade contact area variation while maintaining constant pressure. [011] The device was developed from the association between three physical concepts expressed by classical mechanics, namely: Hook's Law, based on the spring force equation (F) = Spring elastic constant (k) x spring deformation ( AL); Moment of force or Torque, based on the equation that dictates momentum (M) « force (F) x distance (d); and Mechanical Tension, which shares the equation of pressure (p) « force (F) x application area (A). Theoretically, it is concluded by Hook's Law that the reduction in spring deformation also reduces the force, and that the equilibrium point at the moment of force is shaken when there is variation in the force application distance at one end. Since in practice this set should have unrealistic proportions for a primary conveyor belt scraper, the final adjustments were made from the contact profile of the scraper blade against the conveyor belt by exposing an area that varies over the life of the blade.
[012] A presente patente apresenta as seguintes vantagens: [012] The present patent has the following advantages:
[013] - mantém de forma eficiente e com baixo custo, todo o controle de limpeza da correia transportadora, sem exigir ação externa de energia; [013] - efficiently and cost-effectively maintains all conveyor belt cleaning control without requiring external power action;
[014] - custo de implantação é o mesmo de raspadores convencionais de regulagem manual; [014] - Implementation cost is the same as conventional manual adjustment scrapers;
[015] - redução de manutenção é efetiva, pois não existem outros acessórios necessários para o acionamento; [015] - Maintenance reduction is effective as there are no other accessories required for the drive;
[016] - reduz o trânsito de pessoas na área evitando possíveis acidentes, pois reduz a programação de paradas das correias transportadoras para troca de lâminas, favorecendo a manutenção do equipamento; portanto, o curso de trabalho é pré-definído e a regulagem é única, feita no momento da instalação ou troca das lâminas; [016] - reduces the traffic of people in the area avoiding possible accidents, as it reduces the schedule of conveyor belt stops to change blades, favoring equipment maintenance; therefore, the course of work is predefined and the adjustment is unique, made at the time of blade installation or replacement;
[017] - vida útil das lâminas é aumentada e a eficiência de raspagem é garantida durante todo o período da vida útil das lâminas, considerando que a pressão das lâminas contra a correia transportadora é constante; [017] - blade life is increased and scraping efficiency is guaranteed over the entire blade life, considering that blade pressure against the conveyor belt is constant;
[018] - acionamento puramente mecânico projetado a partir dos princípios da física clássica, para eliminar a necessidade de regulagens durante a vida útil das lâminas raspadoras, mantendo, sobre estas pressão constante sem necessidade de recursos adicionais de energia;
[019] - apresenta sistema infinito de posicionamento radiai pelo uso de fixação circular do acionamento; [018] - Purely mechanical drive designed from the principles of classical physics to eliminate the need for adjustments during the life of the scraper blades while maintaining constant pressure on them without the need for additional power resources; [019] - presents infinite system of radial positioning by the use of circular fixation of the drive;
[020] - apresenta dispositivo de proteção contra empenos e quebras do raspador instalado como recurso limitador para evitar o giro involuntário do eixo; [020] - features a scraper bending and breaking protection device installed as a limiting feature to prevent involuntary shaft rotation;
[021] - apres enta combinação do crescente perfil de contato das lâminas reduzindo a pressão sendo compensando pelo aumento de força gerado pela redução do braço de alavanca devido ao desgaste das lâminas, levando a um equilíbrio de forças e a um desgaste constante. [021] - a combination of increasing blade contact profile reducing pressure being offset by increased force generated by reduced lever arm due to blade wear, leading to balance of forces and constant wear.
[022] A presente patente pode ser compreendida de acordo com as figuras anexas, onde: [022] The present patent can be understood according to the attached figures, where:
[023] A Figura 1 ilustra vista em perspectiva do raspador. [1] Figure 1 illustrates perspective view of the scraper.
[024] A Figura 2 ilustra o Dispositivo Mecânico de Alinhamento [024] Figure 2 illustrates the Mechanical Alignment Device
Autocompensador de Energia com seus componentes. Energy self-compensating with its components.
[025] A Figura 3 ilustra detalhe do suporte esquerdo do raspador com o Dispositivo Mecânico de Alinhamento Autocompensador de Energia totalmente livre, sem tensionamento da mola, indicando o início da vida útil da lâmina. [025] Figure 3 illustrates detail of the left scraper support with the fully free Energy Self-aligning Mechanical Alignment Device, without spring tensioning, indicating the beginning of blade life.
[026] A Figura 4 ilustra o raspador posicionado contra a polia no início de sua vida útil, com seu maior braço de alavanca ("D") e o indicador de total vida útil ("C") das lâminas. [026] Figure 4 illustrates the scraper positioned against the pulley at the beginning of its life, with its larger lever arm ("D") and blades full life indicator ("C").
[027] As Figuras 4, 5, 6, 7 e 8 ilustram o posicionamento do raspador em relação ã polia destacando o percurso do desgaste das lâminas através do ângulo (β) de inclinação das mesmas, bem como o crescente desgaste ("P") da área de contato das lâminas com a polia e a pressão compensada pelo momento de força, onde a distância ("D"), que representa o braço de alavanca, vai reduzindo gradativamente. Figures 4, 5, 6, 7 and 8 illustrate the positioning of the scraper in relation to the pulley highlighting the wear path of the blades through their inclination angle (β) as well as the increasing wear ("P"). ) of the contact area of the blades with the pulley and the pressure compensated by the moment of force, where the distance ("D"), which represents the lever arm, is gradually decreasing.
[028] As Figuras 4, 5, 6, 7 e 8 ilustram também o pequeno curso ("C"), correspondente à vida útil das lâminas, sendo ilustrado o seu início na Figura 4 e seu final na Figura 8, onde a porca (1.5) encosta no suporte. [028] Figures 4, 5, 6, 7 and 8 also illustrate the short stroke ("C") corresponding to the life of the blades, their beginning being shown in Figure 4 and their end in Figure 8 where the nut (1.5) abuts the bracket.
[029] De acordo com a Figura 1 , o conjunto raspador (9) é constituído de suporte direito (2), suporte esquerdo (3), lâminas (4) e eixo suporte (6); cada suporte (2, 3) é fixado na região externa dos chutes de transferência dos transportadores por solda, parafusos, sapatas distanciadoras, entre outras.
[030] De acordo com as Figuras 2 e 3, o Dispositivo Mecânico de Acionamento Autocompensador de Energia (1) é constituído de suporte giratório (1.1) soldado na chapa de travamento (1.2), encaixado e soldado na ponta do eixo (6) através do carnes (1.10), tendo soldado em sua extremidade um suporte guia (1.3) do tensor (1.4), onde se encontra soldado o dispositivo limitador (1.5) de vida útil das lâminas (4); guias de mola (1.6), mola de compressão (1.7), porca de aperto (1.8) e contra porca (1.9), sendo este conjunto unido ao carnes (1.10) através do pino de ligação tensor/carnes (1.11). According to Figure 1, the scraper assembly (9) consists of right support (2), left support (3), blades (4) and support shaft (6); each bracket (2, 3) is fixed on the outer region of the conveyor transfer kicks by welding, bolts, spacer shoes, among others. [030] According to Figures 2 and 3, the Energy Self-compensating Mechanical Drive Device (1) consists of a swivel bracket (1.1) welded to the locking plate (1.2), fitted and welded to the shaft end (6). through the meat (1.10), having at its end a guide support (1.3) of the tensioner (1.4), where the blade life limiting device (1.5) is welded (4); spring guides (1.6), compression spring (1.7), clamping nut (1.8) and counter nut (1.9), this assembly being attached to the meat (1.10) via the tensioner / meat connection pin (1.11).
[031] De acordo com a Figura 3, o suporte esquerdo (3) do raspador (1) apresenta-se totalmente livre, sem tensionamento da mola (1.7), sendo que sua regulagem ("A") é única, pré-definida entre as duas guias de mola (1.6), responsável por gerar a pressão das lâminas (4) contra a polia motora (5); o conjunto suporte/tensor da mola (1.3, 1.4) é fixo no carnes (1.10) através do pino de ligação tensor/carnes (1.11) onde o carnes (1.10) é encaixado e soldado na ponta de eixo (6). [031] According to Figure 3, the left support (3) of the scraper (1) is completely free, without tensioning the spring (1.7), and its adjustment ("A") is unique, predefined. between the two spring guides (1.6), responsible for generating the pressure of the blades (4) against the drive pulley (5); the spring support / tensioner assembly (1.3, 1.4) is fixed to the meat (1.10) via the tensioner / meat connection pin (1.11) where the meat (1.10) is fitted and welded to the shaft end (6).
[032] Ainda de acordo com a Figura 3, o dispositivo (1) possui um acesso direto, onde uma vez posicionadas as lâminas (4), encaixadas ou fixas no eixo suporte (6), serão tensionadas contra a polia motora (5) através de uma compressão das molas (1.7) definida pelo indicador de espaçamento ("A") existente entre as duas guias de mola (1.6), pelo aperto da porca (1.8) e contraporca (1.9) de forma que o indicador (7) coincida com o friso (8), indicando o inicio de vida útil das lâminas (4). Still according to Figure 3, the device (1) has a direct access, where once the blades (4), fitted or fixed to the support shaft (6), will be tensioned against the motor pulley (5). by compressing the springs (1.7) defined by the spacing indicator ("A") between the two spring guides (1.6), by tightening the nut (1.8) and lock nut (1.9) so that the indicator (7) coincide with the rib (8), indicating the beginning of the blade life (4).
[033] De acordo com as Figuras 3 a 8, cada Dispositivo Mecânico de Acionamento Autocompensador de Energia (1) gira livremente através do suporte giratório (1.1) em relação à caixa de rolamento (6.1) da ponta de eixo (6) permitindo ser posicionado em várias direções e fixado posteriormente, evitando possíveis obstáculos existentes em campo. [033] According to Figures 3 to 8, each Energy Self-Aligning Mechanical Drive Device (1) rotates freely through the swivel bracket (1.1) relative to the bearing housing (6.1) of the shaft end (6) allowing to be positioned in several directions and fixed later, avoiding possible obstacles in the field.
[034] A transferência da força aplicada nas molas (1.7) para gerar a pressão ideal nas lâminas (4) contra a polia motora (5) é feita através do carnes (1.10), que exerce um movimento angular no eixo (6) do primeiro braço de alavanca para equilíbrio do momento, ou seja, o eixo suporte (6) ao girar em si, cria um deslocamento angular das lâminas (4) em decorrência de seu desgaste gerado pela abrasão natural da pressão das lâminas (4) contra a polia motora (5),
provocando uma variação na inclinação quando ocorre o desgaste das lâminas (4). Este mesmo desgaste representa a redução de distância do segundo braço de alavanca, apresentando um acréscimo de força pelo encurtamento de sua altura. [034] The force applied to the springs (1.7) to generate the optimum pressure on the blades (4) against the drive pulley (5) is made by the cams (1.10), which exerts an angular movement on the shaft (6) of the first lever arm for moment equilibrium, ie the support shaft (6) rotating itself, creates an angular displacement of the blades (4) as a result of their wear generated by the natural abrasion of the blade pressure (4) against the motor pulley (5), causing a variation in the inclination when the blades wear (4). This same wear represents the reduction of the distance of the second lever arm, presenting an increase of force by the shortening of its height.
[035] O efeito da compensação de energia é percebido quando em decorrência do desgaste das lâminas (4), a mola (1.7) se distenderá perdendo força até o final de vida útil das lâminas (4), porém, esta perda de força da mola (1.7) é compensada pela redução do braço de alavanca formado pela altura das lâminas (4) até o ponto de equilíbrio do momento de força do conjunto, concentrado no centro de giro do eixo do suporte (6). Ou seja, perde-se força da mola, mas ganha-se força no braço de alavanca. Os ajustes finais para manter a mesma pressão, em Kgf/cm2, exercida pela lâmina contra a correia, são realizados pelo perfil da área de contato da lâmina contra a correia. [035] The effect of energy compensation is perceived when as a result of the wear of the blades (4), the spring (1.7) will extend losing strength until the end of blade life (4), however, this loss of force of the blade The spring (1.7) is compensated by reducing the lever arm formed by the height of the blades (4) to the point of equilibrium of the force moment of the assembly, concentrated in the center of rotation of the support shaft (6). That is, spring strength is lost, but lever arm strength is gained. Final adjustments to maintain the same pressure, in Kgf / cm 2 , exerted by the blade against the belt, are made by the profile of the blade to belt contact area.
[036] Um dispositivo de segurança para evitar o empeno do eixo foi adicionado ao acionamento do suporte, pois a correia exerce uma força puxando a lâmina (4) além do limite fina! de desgaste. À medida que a mola (1.7) vai se distendendo, o dispositivo de segurança representado pela porca (1.5), que é fixa no tirante (1.4), vai deslocando em direção ao suporte guia do tensor (1.3). Quando esta porca (1.5) encostar no suporte guia do tensor (1.3), o eixo fica imobilizado evitando o empeno, o que indica também o momento de trocar as lâminas (4). Este dispositivo mantém de forma eficiente e com baixo custo, todo o controle de limpeza da correia transportadora. [036] A safety device to prevent shaft bending has been added to the bracket drive as the belt exerts a force by pulling the blade (4) past the thin limit! of wear. As the spring (1.7) extends, the safety device represented by the nut (1.5), which is fixed to the rod (1.4), moves towards the tensioner guide support (1.3). When this nut (1.5) touches the tensioner guide bracket (1.3), the shaft is immobilized avoiding buckling, which also indicates the moment to change the blades (4). This device efficiently and cost-effectively maintains all conveyor belt cleaning control.
[037] A Fig.4 mostra o raspador (9) posicionado contra a polia (5) no início de vida útil, com seu maior braço de alavanca ("D") e o indicador de total vida útil ("C") das lâminas (4). [037] Fig.4 shows the scraper (9) positioned against the pulley (5) at the beginning of its life, with its larger lever arm ("D") and the total life indicator ("C") of the blades (4).
[038] De acordo com as Figuras 4 a 8, o posicionamento do raspador (9) em relação à polia (5) destaca o percurso do desgaste das lâminas (4) através do ângulo (β) de inclinação das mesmas, bem como o crescente desgaste ("P") da área de contato das lâminas (4) com a polia motora (5) e a pressão compensada pelo momento de força onde a distância ("D"), que representa o braço de alavanca, vai reduzindo gradativamente. O pequeno curso ("C") corresponde à vida útil das lâminas (4) do início ao fim.
[039] Esta compensação, feita pelo momento de força do ponto de giro (Ό") das lâminas (4) até o ponto médio do plano ("P") de contato com a polia (5) em função do aumento da área ("P") gerada pelo desgaste gradativo das lâminas (4) em contato com a polia (5), faz com que o Dispositivo Mecânico de Alinhamento Autocompensador de Energia (1) apresente curso pequeno e pré-definido ("C"), uma única regulagem ("A"), a custo baixo, sem complexidade de instalação e manutenção.
[038] According to Figures 4 to 8, the positioning of the scraper (9) relative to the pulley (5) highlights the wear path of the blades (4) through their inclination angle (β) as well as the increasing wear ("P") of the contact area of the blades (4) with the drive pulley (5) and the pressure compensated by the moment of force where the distance ("D"), which represents the lever arm, is gradually decreasing. . The short stroke ("C") corresponds to the life of the blades (4) from start to finish. [039] This compensation, made by the moment of force of the turning point (Ό ") of the blades (4) to the midpoint of the plane (" P ") of contact with the pulley (5) as a function of the increased area ( "P") generated by the gradual wear of the blades (4) in contact with the pulley (5), causes the Energy Self-Aligning Mechanical Alignment Device (1) to have a short and predefined stroke ("C"), a single adjustment ("A") at low cost, without installation and maintenance complexity.
Claims
1. "DISPOSITIVO MECÂNICO DE ACIONAMENTO AUTOCOMPENSADOR DE ENERGIA PARA RASPADORES PRIMÁRIOS EM CORREIAS TRANSPORTADORAS", utilizado no conjunto raspador (9) constituído de suporte direito (2) e suporte esquerdo (3) fixados na região externa dos chutes de transferência dos transportadores por soida e sapatas distanciadoras, lâminas (4) e eixo suporte (6), caracterizado por ser o dispositivo mecânico de acionamento autocompensador de energia (1) constituído de suporte giratório (1.1) soldado na chapa de travamento (1.2), encaixado e soldado na ponta do eixo (6) através do carnes (1.10), tendo soldado em sua extremidade um suporte guia (1.3) do tensor (1.4), onde se encontra soldado o dispositivo limitador (1.5) de vida útil das lâminas (4); guias de mola (1.6), mola de compressão (1.7), porca de aperto (1.8) e contra porca (1.9), sendo este conjunto unido ao carnes (1.10) através do pino de ligação tensor/carnes (1.11); o suporte esquerdo (3) apresenta-se totalmente livre, sem tensionamento da mola (1.7), sendo que sua regulagem ("A") é única, pré-definida entre as duas guias de mola (1.6), gerando a pressão das lâminas (4) contra a polia motora (5); o conjunto suporte/tensor da mola (1.3 e 1.4) é fixo no carnes (1.10) através do pino de ligação tensor/carnes (1.11) onde o carnes (1.10) é encaixado e soldado na ponta de eixo (6); â medida que a mola (1.7) vai se distendendo, o dispositivo de segurança representado pela porca (1.5), que é fixa no tirante (1.4), vai deslocando em direção ao suporte guia do tensor (1.3) e quando a porca (1.5) encostar no suporte guia do tensor (1.3), o eixo fica imobilizado evitando o empeno, o que indica também o momento de trocar as lâminas (4). 1. "MECHANICAL ENERGY DRIVING MECHANICAL DEVICE FOR PRIMARY SCRAPERS IN CARRIER BELTS", used in the scraper assembly (9) consisting of right bracket (2) and left bracket (3) fixed to the outer region of the conveyor transfer kicks per outlet and spacer shoes, blades (4) and support shaft (6), characterized in that the mechanical self-compensating power drive device (1) consists of a swivel bracket (1.1) welded to the locking plate (1.2), fitted and welded to the end. from the shaft (6) through the cams (1.10), having at its end a guide support (1.3) of the tensioner (1.4), where the blade life limiting device (1.5) is welded (4); spring guides (1.6), compression spring (1.7), clamping nut (1.8) and counter nut (1.9), this assembly being attached to the meat (1.10) via the tensioner / meat connection pin (1.11); the left support (3) is totally free, without tensioning the spring (1.7), and its adjustment ("A") is unique, predefined between the two spring guides (1.6), generating the pressure of the blades. (4) against the motor pulley (5); the spring support / tensioner assembly (1.3 and 1.4) is fixed to the meat (1.10) via the tensioner / meat connection pin (1.11) where the meat (1.10) is fitted and welded to the shaft end (6); As the spring (1.7) extends, the safety device represented by the nut (1.5), which is attached to the tie rod (1.4), moves towards the tensioner guide support (1.3) and when the nut (1.5) ) against the tensioner guide support (1.3), the shaft is immobilized avoiding the warping, which also indicates the moment to change the blades (4).
2. "DISPOSITIVO MECÂNICO DE ACIONAMENTO AUTOCOMPENSADOR DE ENERGIA PARA RASPADORES PRIMÁRIOS EM CORREIAS TRANSPORTADORAS" de acordo com a reivindicação 1, caracterizado por as lâminas (4), posicionadas encaixadas ou fixas no eixo suporte (6), serão tensionadas contra a polia motora (5) através da compressão das molas (1.7) definida pelo indicador de espaçamento ("A") existente entre as duas guias de mola (1.6), pelo aperto da porca (1.8) e contraporca (1.9) de forma que o indicador (7) coincida com o friso (8), indicando o início de vida útil das lâminas (4); cada dispositivo mecânico de acionamento autocompensador de energia
(1) gira livremente através do suporte giratório (1.1) em relação à caixa de rolamento (6.1) da ponta de eixo (6) permitindo ser posicionado em várias direções e fixado posteriormente; a transferência da força aplicada nas molas (1.7) para gerar a pressão ideal nas lâminas (4) contra a polia motora (5) é feita através do carnes (1.10), que exerce um movimento angular no eixo (6) do primeiro braço de alavanca para equilíbrio do momento, para que o eixo suporte (6), ao girar em si, crie um deslocamento angular das lâminas (4) em decorrência de seu desgaste gerado pela abrasão natural da pressão das lâminas (4) contra a polia motora (5) promovendo uma variação na inclinação quando ocorre o desgaste das lâminas (4), que representa a redução de distância do segundo braço de alavanca, apresentando um acréscimo de força pelo encurtamento de sua altura; em decorrência do desgaste das lâminas (4), a mola (17) se distenderá perdendo força até o final de vida útil das lâminas (4), porém, esta perda de força da mola (1.7) é compensada pela redução do braço de alavanca formado pela altura das lâminas (4) até o ponto de equilíbrio do momento de força do conjunto, concentrado no centro de giro do eixo do suporte (6); 2. "MECHANICAL POWER-DRIVING MECHANICAL DRIVE FOR PRIMARY CARRIER BELT SCRAPERS" according to claim 1, characterized in that the blades (4) positioned or fixed to the support shaft (6) will be tensioned against the drive pulley ( 5) by compressing the springs (1.7) defined by the spacing indicator ("A") between the two spring guides (1.6), by tightening the nut (1.8) and lock nut (1.9) so that the indicator (7 ) coincide with the frieze (8), indicating the beginning of the blade's useful life (4); each self-compensating mechanical drive device (1) rotates freely through the swivel bracket (1.1) with respect to the bearing housing (6.1) of the stub axle (6) allowing to be positioned in various directions and fixed later; The force applied to the springs (1.7) to generate the optimum pressure on the blades (4) against the drive pulley (5) is made by the cams (1.10), which exerts an angular movement on the shaft (6) of the first gear arm. moment equilibrium lever, so that the support shaft (6), when rotating itself, creates an angular displacement of the blades (4) due to their wear caused by the natural abrasion of the pressure of the blades (4) against the drive pulley ( 5) promoting a variation in the inclination when the blades wear (4), which represents the reduction of the distance of the second lever arm, presenting an increase of force by the shortening of its height; As a result of the wear of the blades (4), the spring (17) will extend, losing strength until the end of the blades' life (4), but this loss of spring force (1.7) is compensated by the reduction of the lever arm. formed by the height of the blades (4) to the equilibrium point of the force moment of the assembly, concentrated in the center of rotation of the support axis (6);
3. DISPOSITIVO MECÂNICO DE ACIONAMENTO AUTOCOMPENSADOR DE ENERGIA PARA RASPADORES PRIMÁRIOS EM CORREIAS TRANSPORTADORAS" de acordo com as reivindicações 1 a 2, caracterizado por o posicionamento do raspador (9) em relação à polia (5) destaca o percurso do desgaste das lâminas (4) através do ângulo (β) de inclinação das mesmas, bem como o crescente desgaste ("P") da área de contato das lâminas 3. MECHANICAL POWER-DRIVING MECHANICAL DEVICE FOR PRIMARY SCRAPERS IN CARRIER BELTS "according to claims 1 to 2, characterized in that the positioning of the scraper (9) in relation to the pulley (5) highlights the wear path of the blades (4 ) through their angle (β), as well as the increasing wear ("P") of the blade contact area
(4) com a polia motora (5) e a pressão compensada pelo momento de força onde a distância ("D"), que representa o braço de alavanca, vai reduzindo gradativamente; o pequeno curso (UC) corresponde à vida útil das lâminas (4) do inicio ao fim; a compensação feita pelo momento de força do ponto de giro ("O") das lâminas (4) até o ponto médio do plano ("P") de contato com a polia(4) with the drive pulley (5) and the pressure compensated by the moment of force where the distance ("D"), which represents the lever arm, is gradually decreasing; the short stroke ( U C) corresponds to the service life of the blades (4) from start to finish; the compensation made by the moment of force of the turning point ("O") of the blades (4) to the midpoint of the plane ("P") of contact with the pulley
(5) em função do aumento da área fP") gerada pelo desgaste gradativo das lâminas (4) em contato com a polia (5) faz com que o Dispositivo Mecânico de Alinhamento Autocompensador de Energia (1) apresente curso pequeno e pré- definido ("C"), uma única regulagem ("A").
(5) as a function of the increase in the area fP ") generated by the gradual wear of the blades (4) in contact with the pulley (5) makes the Energy Self-Aligning Mechanical Alignment Device (1) present a short and pre-defined stroke. ("C"), a single setting ("A").
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU2017233556A AU2017233556A1 (en) | 2016-03-16 | 2017-03-10 | Mechanical actuation device with automatic energy compensation for primary scrapers in conveyor belts |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| BR202016005719-7U BR202016005719Y1 (en) | 2016-03-16 | SELF-COMPENSING ENERGY DRIVE DEVICE FOR PRIMARY SCRAPERS ON CONVEYOR BELTS | |
| BRBR202016005719-7 | 2016-03-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2017156603A1 true WO2017156603A1 (en) | 2017-09-21 |
Family
ID=59850041
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/BR2017/000043 WO2017156603A1 (en) | 2016-03-16 | 2017-03-10 | Mechanical actuation device with automatic energy compensation for primary scrapers in conveyor belts |
Country Status (2)
| Country | Link |
|---|---|
| AU (1) | AU2017233556A1 (en) |
| WO (1) | WO2017156603A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109911559A (en) * | 2019-04-23 | 2019-06-21 | 徐州徐工矿业机械有限公司 | Clearing apparatus and Crushing & Screening Machineries conveyer for belt conveyor |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6283274B1 (en) * | 1998-06-25 | 2001-09-04 | Troy D. Dolan | Cam tensioner for scraper blade assemblies |
| BRMU8602006U (en) * | 2006-09-04 | 2008-04-22 | Martin Engineering Ltda | constructive arrangement applied to primary conveyor belt scraper with quick change of scraper blades |
| US8640856B2 (en) * | 2008-04-10 | 2014-02-04 | Flexible Steel Lacing Company | Removable cartridge cleaner |
| US20150360880A1 (en) * | 2014-06-12 | 2015-12-17 | Flexible Steel Lacing Company | Conveyor belt cleaner with removable cleaner assembly |
| US20160001982A1 (en) * | 2014-07-04 | 2016-01-07 | Flexible Steel Lacing Company | Conveyor Belt Cleaner |
-
2017
- 2017-03-10 AU AU2017233556A patent/AU2017233556A1/en not_active Abandoned
- 2017-03-10 WO PCT/BR2017/000043 patent/WO2017156603A1/en active Application Filing
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6283274B1 (en) * | 1998-06-25 | 2001-09-04 | Troy D. Dolan | Cam tensioner for scraper blade assemblies |
| BRMU8602006U (en) * | 2006-09-04 | 2008-04-22 | Martin Engineering Ltda | constructive arrangement applied to primary conveyor belt scraper with quick change of scraper blades |
| US8640856B2 (en) * | 2008-04-10 | 2014-02-04 | Flexible Steel Lacing Company | Removable cartridge cleaner |
| US20150360880A1 (en) * | 2014-06-12 | 2015-12-17 | Flexible Steel Lacing Company | Conveyor belt cleaner with removable cleaner assembly |
| US20160001982A1 (en) * | 2014-07-04 | 2016-01-07 | Flexible Steel Lacing Company | Conveyor Belt Cleaner |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109911559A (en) * | 2019-04-23 | 2019-06-21 | 徐州徐工矿业机械有限公司 | Clearing apparatus and Crushing & Screening Machineries conveyer for belt conveyor |
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| Publication number | Publication date |
|---|---|
| AU2017233556A1 (en) | 2018-11-08 |
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