CN101767604B - Steering control device for engineering machinery - Google Patents

Steering control device for engineering machinery Download PDF

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Publication number
CN101767604B
CN101767604B CN 200810189832 CN200810189832A CN101767604B CN 101767604 B CN101767604 B CN 101767604B CN 200810189832 CN200810189832 CN 200810189832 CN 200810189832 A CN200810189832 A CN 200810189832A CN 101767604 B CN101767604 B CN 101767604B
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CN
China
Prior art keywords
steering control
connecting rod
steering
joystick
control valve
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN 200810189832
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Chinese (zh)
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CN101767604A (en
Inventor
戚邦伟
董鲁
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Caterpillar Inc
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Caterpillar Inc
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Filing date
Publication date
Application filed by Caterpillar Inc filed Critical Caterpillar Inc
Priority to CN 200810189832 priority Critical patent/CN101767604B/en
Publication of CN101767604A publication Critical patent/CN101767604A/en
Application granted granted Critical
Publication of CN101767604B publication Critical patent/CN101767604B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The invention discloses a steering control device for engineering machinery, which comprises an operational lever assembly with a single operational lever, a left steering control valve and a right steering control valve which are in operational connection with the operational lever assembly, and a left steering clutch and a right left steering clutch which are in controlled connection with the left steering control valve and the right steering control valve, wherein the single operational lever is respectively in operational connection with the left steering control valve and the right steering control valve through a left lever and a right lever on the two sides; the left lever and the right lever are respectively provided with two end parts, one end part is respectively connected with the valve plugs of the left steering control valve and the right steering control valve, and the other end part is in operational connection with the single operational lever to make the each movement of the single operational lever drive one of the levers to translate. The steering control device of the invention utilizes the single operational lever to realize the left and right steering, and improves the comfort of the steering operation.

Description

The steering controlling device that is used for construction machinery and equipment
Technical field
The present invention relates to vehicle the control that turns to, especially construction machinery and equipment turn to control.
Background technology
Construction machinery and equipment, especially such as the tracked construction equipment of bulldozer or trac., normally by the driver's operation steering arm so that left and right sides crawler belt generation speed discrepancy realize turning.Making the both sides crawler belt speed discrepancy occur realizes by steering clutch.Particularly, in the construction machinery and equipment driving process, if left and right sides steering clutch all is in engagement state, the driven force source is identical via the propulsive effort that the mechanisms such as left and right steering clutch, driving device, drive wheel are delivered to the both sides crawler belt, thus the construction machinery and equipment straight-line travelling.If chaufeur by a certain side steering control valve of joystick manipulation, makes the steering clutch of this side separate, just can reduce the propulsive effort of this side crawler belt, thereby, speed discrepancy occurs between the crawler belt of both sides, and make thus construction machinery and equipment turn to this side.
At present, usually be provided with left and right two steering arms in construction machinery and equipment, in order to handle respectively left and right steering control valve, thereby realize left and right turning to.This steering operation is loaded down with trivial details, effort and underaction, and a plurality of joysticks the more space that can take in operator's compartment is set, reduce the traveling comfort of vehicular drive.
The present invention aims to provide a kind of easy to operate steering controlling device, to overcome above-mentioned the problems of the prior art.
Summary of the invention
the present invention relates to a kind of steering controlling device for construction machinery and equipment, comprise the lever assembly with single joystick, a left side that connects with this lever assembly operability, the right steering control cock, and controllably connect respectively left, the left side of right steering control cock, the right steering power-transfer clutch, wherein, this single joystick passes through respectively left in both sides, right connecting rod functionally connects a left side, the right steering control cock, a described left side, right connecting rod all has two ends, one of them end respectively with a left side, the spool of right steering control cock connects, and another end and this single operating lever operation be connected into the each motion that makes this single joystick and can drive one of them connecting rod translation.
On the other hand, the invention still further relates to a kind of construction machinery and equipment with above-mentioned steering controlling device.
Description of drawings
Describe below with reference to accompanying drawings the preferred embodiments of the present invention in detail, in the accompanying drawings:
Fig. 1 illustrates a kind of exemplary work machine;
Fig. 2 illustrates the transparent view according to steering controlling device embodiment of the present invention;
Fig. 3 is the partial view of steering controlling device shown in Figure 2;
Fig. 4 is the upward view of part shown in Figure 3.
The specific embodiment
Fig. 1 illustrates exemplary work machine 10.This project machinery 10 can comprise operator's compartment 100, driver element (not shown) and draw gear 200.This project machinery 10 also can comprise can be at the steering controlling device 300 (referring to Fig. 2) of operator's compartment 100 interior operations.At this, although should be pointed out that construction machinery and equipment 10 is shown in Figure 1 for crawler-type loader, this project machinery also can be crawler doer, excavating machine, even can be wheel type loader and other construction machinery and equipment well known in the prior art.
Referring now to Fig. 2,, this illustrates the overall perspective according to the steering controlling device 300 of the embodiment of the present invention.The connecting rod that steering controlling device 300 can comprise lever assembly, functionally connect with lever assembly, the steering control valve that functionally connects with connecting rod and can control the steering clutch that engages or throw off by steering control valve.
According to the present invention, the lever assembly of steering controlling device 300 can comprise single joystick, this single joystick can comprise bar handle section 301 and joystick section 302, wherein bar handle section 301 can be arranged in operator's compartment 100 so that by driver's operation, joystick section 302 engages bar handle section 301 in a usual manner, in order to move accordingly with this bar handle section 301.
In preferred embodiment as shown in the figure, joystick section 302 functionally connects respectively left connecting rod 303 and right connecting rod 304 at its end away from bar handle section 301 in both sides, in order to can cause described left and right connecting rod 303,304 translations.Described left and right connecting rod 303,304 functionally connect respectively left and right steering control valve 305,306 spool at their ends away from joystick section 302 separately, so that corresponding spool stretches out or retracts.At last, left and right steering control valve 305,306 connect respectively left and right steering clutch (not shown) with manner known in the art, and make it to engage or throw off.
Especially referring to Fig. 3 and Fig. 4, preferably, joystick section 302 connects left and right connecting rod 303,304 by a middleware 308, thereby wherein this middleware 308 is configured so that namely each motion of the bar handle 301-of section of the joystick 302-of section can cause a connecting rod translation in left and right connecting rod 303,304.
In addition, in a kind of preferred embodiment, middleware 308 comprise central openings and from the relative sidewall of this perforate radially-also referred to as laterally-two lugs stretching out, wherein, middleware 308 for example connects (not shown) by key at this central openings place and is fixedly connected to joystick section 302, described two lugs are equipped with roughly longitudinally-and be the bearing pin of the above-below direction-extension in Fig. 3, to be used for connecting left and right connecting rod 303,304.
As a kind of preferred version, the central openings of middleware 308 can be configured to clamping hoop type perforate as shown in the figure, so that can be adaptive different joystick section 302 diameters of this central openings.
In addition, should be understood that, although in described preferred embodiment, the key of middleware 308 by the central openings place is connected to joystick section 302 with being connected and fixed herein, but middleware 308 is not limited to this with captiveing joint of joystick section 302, for example, can or bond in joystick section 302 middleware 302 welding.It is also contemplated that central openings is not set, and two relative lugs with bearing pin directly are fixed in joystick section 302.Even it is contemplated that middleware is not set, but in joystick section 302 integrally formed two relative lugs with bearing pin.
Still referring to Fig. 3, and especially referring to Fig. 4, with the bearing pin of middleware 308 accordingly, left and right connecting rod 303,304 end are equipped with slotted hole, wherein the bearing pin of middleware is inserted in this slotted hole with can move freely.Thereby for avoiding the state that the moving influence connecting rod affects steering control valve that is not intended to of joystick section, preferably the length of this slotted hole is greater than the stroke of the spool of corresponding steering control valve.In addition preferably, can be at the end away from lug of the free end of bearing pin-be bearing pin-arrange radial direction through hole, being used for laying pin at this through hole after assembling, thereby prevent that bearing pin from unexpectedly deviating from from slotted hole.
Should be pointed out that middleware 308 and left and right connecting rod 303,304 connect the mode described above that is not limited to.For example, replacement scheme as slotted hole, two restriction protrusion in a distance can be set in the end of each connecting rod, driving respective link when being fixedly connected on the bearing pin contact restriction protrusion of joystick section 302 with box lunch moves, then make the spool of corresponding steering control valve stretch out or retract, and finally realize turning to by making steering clutch throw off or engage.
Should also be noted that joystick connects with the operability of connecting rod is not limited to by Middleware implementation described above.Any connecting rod that makes intermittently all can be used for the present invention with the connecting mode that joystick moves back and forth.For example, can be in the radially both sides of joystick section 302 and the fetching device of left and right connecting rod 303,304 corresponding site setting such as magnetic substance or hooking part, pick up and drive one of them connecting rod translation when moving to certain position with this joystick of box lunch section 302, and discharge this connecting rod after moving a certain distance, the disengagement or the joint that stretch out or retract and realize steering clutch by the spool that makes corresponding steering control valve thus, thus construction machinery and equipment is turned to.
Industrial usability
Describe below in conjunction with preferred embodiment shown in Figure 2 operation to steering controlling device of the present invention.
When needs are for example turned construction machinery and equipment left, chaufeur can promote the bar handle section 301 of joystick, thereby the middleware 308 that is fixedly connected in joystick section 302 is rotated along the clockwise direction in Fig. 2, this rotation makes the left side bearing pin (with reference to figure 2) of middleware 308 arrive and against the slotted hole end of left connecting rod 303, and thus this left connecting rod 303 is pulled towards the direction away from the left steering control cock, the spool of left steering control cock is moved.Subsequently, make the left steering disengaging of clutch by the left steering control cock.Thus, the speed of left track reduces, and construction machinery and equipment is turned left.During this period, the right side bearing pin of middleware 308 only moves freely in the slotted hole of right connecting rod 304, and does not contact this right connecting rod 304, so the state of right steering control cock is constant, and the right steering power-transfer clutch is unaffected, and the speed of right side crawler belt does not change.
After construction machinery and equipment is turned left, reversing sense pulls bar handle section 301 so that middleware 308 rotates counterclockwise, this rotation will make the left side bearing pin arrive and against the other end of the slotted hole of left connecting rod 303, and continue to advance with should left connecting rod 303 pushed home, that is to say, make the spool homing of left steering control cock, thereby the left steering power-transfer clutch is re-engaged, and the speed of left track is gone up.
When needs bend to right construction machinery and equipment, can carry out in opposite direction aforesaid operations.
Steering controlling device low cost of manufacture of the present invention, and easy to operate, flexible.This steering controlling device is realized turning to of arranged on left and right sides by single steering arm, has greatly improved operating efficiency and the operation comfort of chaufeur.
Although should be pointed out that the top the present invention that describes in detail in conjunction with specific embodiments, without departing from the scope of the invention, those skilled in the art can carry out various modifications and variations to disclosed construction machinery and equipment steering controlling device.By explanation and the practice of disclosed device, those skilled in the art can expect other embodiment.This specification sheets and example are only as example, and actual range of the present invention is limited by following claim and equivalents thereof.

Claims (4)

1. steering controlling device that is used for construction machinery and equipment, comprise lever assembly, a left side that connects with this lever assembly operability, the right steering control cock, and controllably connect respectively left, the left side of right steering control cock, the right steering power-transfer clutch, wherein, this lever assembly comprises single joystick, this single joystick is respectively by left, right connecting rod functionally connects a left side, the right steering control cock, a described left side, right connecting rod all has two ends, one of them end respectively with a left side, the spool of right steering control cock connects, and another end and this single operating lever operation be connected into the each motion that makes this single joystick and can drive one of them connecting rod translation,
Wherein, described single joystick is by functionally connecting left and right connecting rod with the middleware of this joystick captive joint, wherein this middleware is provided with the bearing pin that extends longitudinally in both lateral sides, described bearing pin is inserted in the slotted hole of corresponding position of described left and right connecting rod with can move freely respectively, it is characterized in that, the length of described slotted hole is greater than the stroke of the spool of left and right steering control valve.
2. according to claim 1 steering controlling device, is characterized in that, is that key connects between described single joystick and described middleware.
3. according to claim 1 steering controlling device, is characterized in that, this project machinery is caterpillar machinery.
4. a construction machinery and equipment, have steering controlling device according to claim 1 and 2.
CN 200810189832 2008-12-30 2008-12-30 Steering control device for engineering machinery Expired - Fee Related CN101767604B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 200810189832 CN101767604B (en) 2008-12-30 2008-12-30 Steering control device for engineering machinery

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 200810189832 CN101767604B (en) 2008-12-30 2008-12-30 Steering control device for engineering machinery

Publications (2)

Publication Number Publication Date
CN101767604A CN101767604A (en) 2010-07-07
CN101767604B true CN101767604B (en) 2013-05-15

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Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104943539B (en) * 2014-03-28 2019-02-26 上海华丰工业控制技术工程有限公司 A kind of walking operating mechanism of running gear

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5868230A (en) * 1996-05-28 1999-02-09 Komatsu America International Company Hydraulic motion control valve and lever
CN201056711Y (en) * 2007-06-21 2008-05-07 山推工程机械股份有限公司 Mono-lever walk operating device of bulldozer
CN201125400Y (en) * 2007-10-26 2008-10-01 天津建筑机械厂 Mechanical type monolever steering, variable speed control mechanism of soil shifter

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1134903A (en) * 1997-07-15 1999-02-09 Takayoshi Yoshimura Crawler vehicle equipped with single lever steering device

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5868230A (en) * 1996-05-28 1999-02-09 Komatsu America International Company Hydraulic motion control valve and lever
CN201056711Y (en) * 2007-06-21 2008-05-07 山推工程机械股份有限公司 Mono-lever walk operating device of bulldozer
CN201125400Y (en) * 2007-10-26 2008-10-01 天津建筑机械厂 Mechanical type monolever steering, variable speed control mechanism of soil shifter

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
JP特开平11-34903A 1999.02.09

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Granted publication date: 20130515

Termination date: 20171230