CN2241243Y - Control air valve - Google Patents
Control air valve Download PDFInfo
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- CN2241243Y CN2241243Y CN 95235153 CN95235153U CN2241243Y CN 2241243 Y CN2241243 Y CN 2241243Y CN 95235153 CN95235153 CN 95235153 CN 95235153 U CN95235153 U CN 95235153U CN 2241243 Y CN2241243 Y CN 2241243Y
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Abstract
The utility model discloses a control air valve which is used for the special vehicle and the engineering machinery. The control air valve overcomes the disadvantages that the structure of a link mechanism which is in a hydraulic transmission system is complicated and the universality is deficient. The control air valve comprises a valve body, a stop valve, a valve seat, a valve rod and a spring used for making the valve rod reset. One end of the valve rod connects with a control mechanism, and the other end connects with the stop valve. The stop valve comprises a stop valve body, a stop valve seat, a stop valve core, a spring used for making the stop valve core reset and a stop valve pad which is installed on the stop valve core. The control air valve is mainly used for controlling a hydraulic cylinder in the hydraulic transmission system in the special vehicle and the engineering machinery. The control air valve has the advantages of universality, small volume and convenient installation.
Description
The utility model relates to and is used for special purpose vehicle and engineering machinery, especially for the one control air valve of dump truck.
Oil hydraulic cylinder (or cylinder) in the Hydraulic Power Transmission System (or pneumatic actuator system) of special purpose vehicle and engineering machinery mainly adopts mechanical linkage to handle at present, the complex structure of this mechanical linkage, volume is bigger, dissimilar special purpose vehicles and engineering machinery, because its chassis pattern difference, the layout of mechanical linkage and design are also inequality, lack versatility, and manufacturing and car load (or complete machine) assembling are all very difficult.If when controlling one or more oil hydraulic cylinders (or cylinder) and finishing multiple function, the design of this mechanical linkage and make all very complicated.Particularly in dump truck to the control of lifting hydraulic cylinder, adopt mechanical linkage to handle and exist following shortcoming: (1) lifting, descend to handling to handle and separate the driver operation inconvenience with power take-off; (2) phenomenon that causes the accident because of compartment lifting in the misoperation generation vehicle driving process easily; (3) rate of descent in uncontrollable compartment.
Goal of the invention of the present utility model is, design a kind of one control air valve that special purpose vehicle and engineering machinery are controlled the oil hydraulic cylinder (or cylinder) of Hydraulic Power Transmission System (or pneumatic actuator system) that is used for, it has versatility and is convenient to make up the function of controlling.
Goal of the invention of the present utility model can realize by following technical solution:
Scheme one: one control air valve, it has valve body 1, be installed in stop valve 2a in the valve body 1, be fixed on valve seat 3, the valve rod 4a on the valve body 1 and be used to spring 5a that valve rod 4a is resetted.Its special way is, the end of valve rod 4a is connected with operating mechanism, and the other end of valve rod 4a is connected with stop valve 2a.Stop valve 2a has checking-valve body 6, be fixed on the checking-valve body 6 by valve seat 7, be installed in moving up and down in the checking-valve body 6 by spool 8, be used to make by spring 10 that spool 8 resets and be installed on spool 8 by valve pad 9.The upper-lower position of stop valve 2a in valve body 1 fixed.Chamber 34 in the checking-valve body 6 of stop valve 2a is communicated with the suction port 11 on the checking-valve body 6, and suction port 11 is communicated with suction port 37 on the valve body 1.Have chamber 36a between the checking-valve body 6 of stop valve 2a and the valve body 1, chamber 36a is communicated with the air outlet 35a of valve body 1.Seal by seal arrangement 13a between suction port 37 on chamber 36a and the valve body 1 and the suction port 11 on the checking-valve body 6.
Operating mechanism of the present utility model can be to have steel ball 14, cam 16 and be fixed with handle 15 on the cam 16, cam 16 is installed in the rotating shaft 12, cam 16 has radius bigger cylndrical surface 18 and the less cylndrical surface 17 of radius, and steel ball 14 contacts with cylndrical surface 18 or cylndrical surface 17 with an end of valve rod respectively.
Operating mechanism of the present utility model can also be to have steel ball 22, handle 19, coupled arm 24, plunger 26 and be installed in seal ring 27 in the cylinder 29, handle 19 is installed in the rotating shaft 23, handle 19 has lug boss 20 and depressed part 21, steel ball 22 contacts with lug boss 20 or depressed part 21 with the end of valve rod 4a respectively, coupled arm 24 is installed in the rotating shaft 23, one side of handle 29 has the step 25 that can contact with coupled arm 24, one end of coupled arm 24 can with an end in contact of plunger 26, the other end of plunger 26 is equipped with seal ring 27, and cylinder 29 has suction port 28.
Scheme two: one control air valve, it has valve body 1, be installed in stop valve 2c in the valve body 1, be fixed on valve seat 3, the valve rod 4c on the valve body 1 and be used to spring 5c that valve rod 4c is resetted.Its special way is, the end of valve rod 4c is connected with operating mechanism, and the other end of valve rod 4c is connected with stop valve 2c.Stop valve 2c has checking-valve body 6, be fixed on the checking-valve body 6 by valve seat 7, be installed in moving up and down in the checking-valve body 6 by spool 8, be used to make by spring 10 that spool 8 resets and be installed on spool 8 by valve pad 9.The end of stop valve 2c is equipped with balance spring 30, and gas is opposite to the direction of the pressure of stop valve 2c among the direction of the elastic force of 30 couples of stop valve 2c of balance spring and the chamber 36c.Chamber 34 in the checking-valve body 6 of stop valve 2c is communicated with the suction port 11 on the checking-valve body 6, and suction port 11 is communicated with suction port 37 on the valve body 1.Have chamber 36c between the checking-valve body 6 of stop valve 2c and the valve body 1, chamber 36c is communicated with the air outlet 35c of valve body 1.Seal by seal arrangement 13c between suction port 37 on chamber 36c and the valve body 1 and the suction port 11 on the checking-valve body 6.
Operating mechanism of the present utility model can be to have steel ball 31, cam 32 and be fixed on handle 15 on the cam 32, cam 32 is installed in the rotating shaft 12, has cylinder 33 on the cam 32, steel ball 31 contacts with cylinder 33 with the end of valve rod 4c respectively, and the distance of every bit countershaft 12 axis on the curve that contacts with steel ball 31 on the cylinder 33 in cam 32 rotation processes increases continuously with the variation of angular displacement of the cam or reduces.
Scheme three: one control air valve, it have valve 1, respectively be installed in three stop valve 2a, 2b, 2c in three cavitys in the valve body 1, be fixed on valve seat 3, three valve rod 4a, 4b, the 4c on the valve body 1 and be used to three spring 5a, 5b, 5c that valve rod 4a, 4b, 4c are resetted.Its special way is, the end of three valve rod 4a, 4b, 4c is connected with separately operating mechanism respectively, and the other end of three valve rod 4a, 4b, 4c is connected with three stop valve 2a, 2b, 2c respectively.Three stop valve 2a, 2b, 2c have checking-valve body 6, be fixed on the checking-valve body 6 by valve seat 7, be installed in moving up and down in the checking-valve body 6 by spool 8, be used to make by spring 10 that spool 8 resets and be installed on spool 8 by valve pad 9.Wherein stop valve 2a and the upper-lower position of stop valve 2b in valve body 1 are fixed.The end of stop valve 2c is equipped with balance spring 30, and gas is opposite to the direction of the pressure of stop valve 2c among the direction of the elastic force of 30 couples of stop valve 2c of balance spring and the chamber 36c.Chamber 34 in three stop valve 2a, 2b, the 2c checking-valve body 6 separately is communicated with the suction port 11 on the checking-valve body 6, and three suction ports 11 all are communicated with suction port 37 on the valve body 1.Three stop valve 2a, 2b, 2c separately checking-valve body 6 and valve body 1 between have chamber 36a, 36b, 36c respectively, chamber 36a, 36b and the 36c of three stop valve 2a, 2b and 2c are communicated with air outlet 35a, 35b and the 35c of valve body 1 respectively.Seal by seal arrangement 13a, 13b, 13c respectively between suction port 37 on chamber 36a, 36b, 36c and the valve body 1 and the suction port 11 on the checking-valve body 6.
The utility model can be made to such an extent that volume is less, is used for special purpose vehicle and engineering machinery is convenient to mounting arrangements, is not subjected to the restriction of the chassis pattern of special purpose vehicle and engineering machinery, has versatility.If desired the control source of the gas is carried out the branch timing, can combine, realize multi-functional control one or more oil hydraulic cylinders (or cylinder) with several the utility model.Scheme two of the present utility model can realize stepless adjusting to the air pressure of air outlet.Scheme three is used for dump truck to be controlled lifting hydraulic cylinder and power take-off cylinder, and driver operation is convenient, the size of the pressure that it can be by adjusting gas port, and the oil return flow of control hoist control valve, thus realize adjusting to the compartment rate of descent.Automatic disconnection power take-off control source of the gas made power take-off out of supply automatically when the compartment descended, and avoided the phenomenon that has an accident owing to misoperation generation vehicle lifting in the vehicle driving process.
Below in conjunction with accompanying drawing the novel embodiment of this reality is described in detail.
Fig. 1 is a schematic diagram of the present utility model.
Fig. 2 is a structural representation of the present utility model.
Fig. 3 is the I-I view among Fig. 2.
Fig. 4 is the II-II view among Fig. 2.
Fig. 5 is the III-III view among Fig. 2.
Fig. 6 is the IV partial enlarged drawing among Fig. 2.
As Fig. 2, Fig. 3, Fig. 4, Fig. 5 and shown in Figure 6, present embodiment is to be used for the one control air valve that dump truck is controlled lifting hydraulic cylinder and power take-off cylinder.Have three cylindrical bore on the valve body 1, be separately installed with stop valve 2a, 2b and 2c in three cylindrical bore, the top of each stop valve all is installed in the nylon seat 37, and the middle part is installed in the nylon spacer 38.Valve body 1 bottom is fixed with valve seat 3, and valve seat 3 contacts with the bottom of stop valve 2a and 2b, and stop valve 2a and 2b can not be moved up and down in valve body 1.Valve seat 3 does not contact with the bottom of stop valve 2c, between the bottom of stop valve 2c and the valve seat 3 balance spring 30 is installed, and stop valve 2c can move up and down in valve body 1.Balance spring 30 adopts stage clip.The structure of three stop valve 2a, 2b and 2c is identical, and each only all has valve rod 4a, 4b, 4c respectively, has respectively on valve rod 4a, 4b, the 4c to be used to spring 5a, 5b, 5c that valve rod 4a, 4b, 4c are resetted.The upper end of three valve rod 4a, 4b, 4c is connected with separately operating mechanism respectively, and the lower end of three valve rod 4a, 4b, 4c is connected with three stop valve 2a, 2b, 2c respectively.Among three stop valve 2a, 2b, the 2c each only all has checking-valve body 6, be fixed on the checking-valve body 6 by valve seat 7, be installed in the checking-valve body 6 moving up and down by spool 8, be used to make by spring 10 that spool 8 resets and be installed on spool 8 by valve pad 9.Being used for installing by valve pad 9 by spool 8, is elastomer by valve pad 9, and it is used to open or close stop valve.Checking-valve body 6 and between the valve seat 7 by seal arrangement 39 sealings, seal arrangement 39 adopts " O " RunddichtringOs.Spring 10 adopts stage clips, its end with contact by valve seat 7, the other end with end spool 8 and contact.Chamber 34 among three stop valve 2a, 2b, the 2c in each checking-valve body 6 only is communicated with the suction port 11 on the checking-valve body 6.Suction port 11 on each of three stop valve 2a, 2b, 2c checking-valve body 6 only all is communicated with suction port 37 on the valve body 1.Suction port 37 is communicated with the source of the gas of dump truck, enters three stop valve 2a, 2b respectively and 2c distributes from the gas of automobile source of the gas through suction port 37.Have chamber 36a, 36b and 36c respectively between each checking-valve body 6 of three stop valve 2a, 2b and 2c and the valve body 1, chamber 36a, the 36b of three stop valve 2a, 2b and 2c and 36c are communicated with air outlet 35a, 35b and 35c on the valve body 1 respectively.(because of being difficult to expression among Fig. 2, so only in Fig. 1, represent).Seal by seal arrangement 13a, 13b and 13c respectively between suction port 37 on chamber 36a, 36b and 36c and the valve body 1 and the suction port 11 on the checking-valve body 6.Seal arrangement 13a, 13b and 13c adopt " O " RunddichtringO, and it is installed between nylon seat 37 and the nylon spacer 38.Seal by seal arrangement 41 and 48 respectively between stop valve 2a and 2b and the valve seat 3, seal arrangement 41 and 48 adopts " O " RunddichtringO.Seal by seal arrangement 40 between stop valve 2c and the valve seat 3, seal arrangement 40 adopts " O " RunddichtringO, and it is positioned at the lower end of nylon spacer 38.The operating mechanism of the valve rod 4a of stop valve 2a has steel ball 22, handle 19, coupled arm 24, plunger 26 and is installed in seal ring 27 in the cylinder 29, handle 19 is installed in the rotating shaft 23, handle 19 has lug boss 20 and depressed part 21, steel ball 22 contacts with lug boss 20 or depressed part 21 with the end of valve rod 4a respectively, coupled arm 24 is installed in the rotating shaft 23, one side of handle 19 has the step 25 that can contact with coupled arm 24, one end of coupled arm 24 can with an end in contact of plunger 26, the other end of plunger 26 is equipped with seal ring 27, and cylinder 29 has suction port 28.The operating mechanism of the valve rod 4b of stop valve 2b has steel ball 14, cam 16 and is fixed on handle 15 on the cam 18, cam 16 is installed in the rotating shaft 12, cam 16 has radius bigger cylndrical surface 18 and the less cylndrical surface 17 of radius, and steel ball 14 contacts with cylndrical surface 18 or cylndrical surface 17 with the end of valve rod 4b respectively.The operating mechanism of the valve rod 4c of stop valve 2c has steel ball 31, cam 32 and is fixed on handle 15 on the cam 32, cam 32 is installed in the rotating shaft 12, has cylinder 33 on the cam 32, steel ball 31 contacts with cylinder 33 with the end of valve rod 4c respectively, and the distance of every bit countershaft 12 axis on the curve that contacts with steel ball 31 on the cylinder 33 in cam 32 rotation processes increases continuously with the variation of angular displacement of the cam or reduces.Cam 16 and cam 32 are made of one, and are installed in the same rotating shaft 12, and have same handle 15.
During use, as shown in Figure 1, suction port 37 on the valve body 1 connects the dump truck source of the gas, air outlet 35a on the valve body 1 is communicated with the rodless cavity of the power take-off cylinder 42 of dump truck, air outlet 35b on the valve body 1 is communicated with the rodless cavity of gas control distributing valve cylinder 40, the air outlet 35c of valve body 1 is communicated with the rod chamber of gas control distributing valve cylinder 40, and air outlet 35c is communicated with the suction port 28 of cylinder 29.Piston rod 43 is connected with power take-off, and spring 44 is used to make piston 45 to reset.Piston rod 41 is connected with the valve rod of the control valve of lifting hydraulic cylinder, and when the rodless cavity air inlet of gas control distributing valve cylinder 40, oil hydraulic cylinder is finished the lifting function in compartment; When rodless cavity and rod chamber during not air inlet, spring 47 makes piston 46 return to the neutral position, oil hydraulic cylinder finish the compartment in stop function; When the rod chamber air inlet, oil hydraulic cylinder is finished the decline function in compartment, and the size of rod chamber air pressure can change the position, the left and right sides of piston 46, the size of control lifting hydraulic cylinder oil return flow, thus play the effect of control compartment rate of descent.Stop valve 2a, the structure of 2b and 2c is identical with working principle, when steel ball 22,14,31 promote valve rod 4a respectively, 4b, when 4c moves downward, valve rod 4a, 4b, 4c overcomes spring 5a respectively, 5b, the pushed down stop valve 2a of 5c, 2b, 2c moves downward by valve pad 9, thereby open stop valve 2a, 2b, 2c, at this moment, stop valve 2a, 2b, the chamber 34 of 2c respectively with chamber 36a, 36b, 36c is communicated with, the suction port 37 of control gaseous on valve body 1 from source of the gas, suction port 11 on each checking-valve body 6 enters chamber 34, again through each stop valve 2a, 2b, the chamber 36a of 2c, 36b, air outlet 35a on 36c and the valve body 1,35b, 35c output.When need were closed stop valve 2a, 2b, 2c, spring 5a, 5b, 5c upwards resetted valve rod 4a, 4b, 4c, and the spring 10 of stop valve 2a, 2b, 2c makes by spool 8 with by valve pad 9 and resets, and closes stop valve 2a, 2b, 2c.Gas equates the downward pressure of stop valve 2c among the elastic force that the balance spring 30 of stop valve 2c lower end makes progress and the chamber 36c.When the valve rod 4c of stop valve 2c promotes downwards by valve pad 9 with when spool 8 is parked in certain position, because stop valve 2c opens, chamber 34 is communicated with chamber 36c, gas among the 36c of chamber produces downward pressure to the upper end of stop valve 2c, this pressure makes the checking-valve body 6 of stop valve 2c and moves down by the elastic force that valve seat 7 overcomes balance spring 30, move to when valve pad 9 is closed stop valve 2c again, gas among the 36c of chamber is to the pressure of stop valve 2c and the Spring balanced of balance spring 30, and the gas among the 36c of chamber keeps certain pressure.Therefore, regulate the upper-lower position of the valve rod 4c of stop valve 2c, can regulation valve body 1 on the pressure of output gas of air outlet 35c.The change of the output gas pressure intensity of air outlet 35c can be regulated the position, the left and right sides of the piston 46 of gas control distributing valve cylinder 40, thereby passes through the size that piston rod 41 changes lifting hydraulic cylinder oil return flows, the rate of descent of regulating the compartment.Handle with sleeve 19 makes the lug boss 20 of handle 19 contact with steel ball 22, and steel ball 22 promotes valve rod 4a downwards, opens stop valve 2a, the rodless cavity air inlet of power take-off cylinder 42, and power take-off closes.Handle with sleeve 15 makes the bigger cylndrical surface 18 of cam 16 radiuses contact with steel ball 14, and steel ball 14 promotes valve rod 4b and opens stop valve 2b downwards, and the lifting function in compartment is finished in the rodless cavity air inlet of gas control distributing valve cylinder 40.Handle with sleeve 15, make the cylinder 33 on the cam 32 rotate (promptly clockwise direction rotates in Fig. 5) to the bigger direction of the radius of the axis of countershaft 12 gradually, steel ball 31 promotes valve rod 4c and opens stop valve 2c, gas among the elastic force of balance spring 30 and the chamber 36c is during to the pressure balance of stop valve 2c, by valve pad 9 stop valve 2c is closed, the rod chamber of gas control distributing valve cylinder keeps certain pressure, and the compartment descends by certain speed.Handle with sleeve 15, regulate the contact position of the cylinder 33 on steel ball 31 and the cam 32, upper-lower position that can regulating valve stem 4c make the size of pressure of the gas of the air outlet 35c output on the valve body 1 realize infinitely regulating, thereby the rate of descent in control compartment realizes infinitely regulating.When opening stop valve 2c with handle 15, handle 15 also makes the radius of cam 16 less arc surface 17 contact with steel ball 14, the spring 5b valve push rod 4b that makes progress, and stop valve 2b closes, and stops the lifting in compartment.When stop valve 2c opens, the gas of stop valve 2c output enters cylinder 29 through suction port 28, promoting plunger 26 moves up, plunger 26 upwards promotes continuous motion stem 24, and continuous motion stem 24 drives handle 19 rotations by the step 25 of handle 19, and steel ball 22 is contacted with the depressed part 21 of handle 19, spring 5a upwards promotes valve rod 4a, stop valve 2a is closed, and the spring 44 in the power take-off cylinder 42 resets piston 45, and power take-off is out of supply.As long as the compartment begins to descend, power take-off is just out of supply automatically, can prevent in the vehicle driving process because misoperation produces compartment lifting phenomenon, the generation of minimizing accident.
Claims (9)
1. one control air valve, it has valve body (1), be installed in the stop valve (2a) in the valve body (1), be fixed on the valve seat (3) on the valve body (1), valve rod (4a) and be used to spring (5a) that valve rod (4a) is resetted, it is characterized in that, one end of valve rod (4a) is connected with operating mechanism, the other end of valve rod (4a) is connected with stop valve (2a), stop valve (2a) has checking-valve body (6), be fixed on the checking-valve body (6) by valve seat (7), be installed in the spool (8) that ends moving up and down in the checking-valve body (6), be used to make by spring (10) that spool (8) resets and be installed on spool (8) by valve pad (9), the upper-lower position of stop valve (2a) in valve body (1) fixed, chamber (34) in the checking-valve body (6) of stop valve (2a) is communicated with the suction port (11) on the checking-valve body (6), suction port (11) is communicated with suction port (37) on the valve body (1), has chamber (36a) between the checking-valve body (6) of stop valve (2a) and the valve body (1), chamber (36a) is communicated with the air outlet (35a) of valve body (1), seals by seal arrangement (13a) between suction port (37) on chamber (36a) and the valve body (1) and the suction port (11) on the checking-valve body (6).
2. one control air valve according to claim 1, it is characterized in that, operating mechanism has steel ball (14), cam (16) and is fixed with handle (15) on the cam (16), cam (16) is installed in the rotating shaft (12), cam (16) has bigger cylndrical surface of radius (18) and the less cylndrical surface (17) of radius, and steel ball (14) contacts with cylndrical surface (18) or cylndrical surface (17) with an end of valve rod respectively.
3. one control air valve according to claim 1, it is characterized in that, operating mechanism has steel ball (22), handle (19), coupled arm (24), plunger (26) and be installed in seal ring (27) in the cylinder (29), handle (19) is installed in the rotating shaft (23), handle (19) has lug boss (20) and depressed part (21), steel ball (22) contacts with lug boss (20) or depressed part (21) with an end of valve rod (4a) respectively, coupled arm (24) is installed in the rotating shaft (23), one side of handle (19) has the step (25) that can contact with coupled arm (24), one end of coupled arm (24) can with an end in contact of plunger (26), the other end of plunger (26) is equipped with seal ring (27), and cylinder (29) has suction port (28).
4. one control air valve, it has valve body (1), be installed in the stop valve (2c) in the valve body (1), be fixed on the valve seat (3) on the valve body (1), valve rod (4c) and be used to spring (5c) that valve rod (4c) is resetted, it is characterized in that, one end of valve rod (4c) is connected with operating mechanism, the other end of valve rod (4c) is connected with stop valve (2c), stop valve (2c) has checking-valve body (6), be fixed on the checking-valve body (6) by valve seat (7), be installed in the spool (8) that ends moving up and down in the checking-valve body (6), be used to make by spring (10) that spool (8) resets and be installed on spool (8) by valve pad (9), one end of stop valve (2c) is equipped with balance spring (30), balance spring (30) is opposite to the direction of the pressure of stop valve (2c) with chamber (36c) middle gas to the direction of the elastic force of stop valve (2c), chamber (34) in the checking-valve body (6) of stop valve (2c) is communicated with the suction port (11) on the checking-valve body (6), suction port (11) is communicated with suction port (37) on the valve body (1), has chamber (36c) between the checking-valve body (6) of stop valve (2c) and the valve body (1), chamber (36c) is communicated with the air outlet (35c) of valve body (1), seals by seal arrangement (13c) between suction port (37) on chamber (36c) and the valve body (1) and the suction port (11) on the checking-valve body (6).
5. one control air valve according to claim 4, it is characterized in that, operating mechanism has steel ball (31), cam (32) and is fixed on handle (15) on the cam (32), cam (32) is installed in the rotating shaft (12), has cylinder (33) on the cam (32), steel ball (31) contacts with cylinder (33) with an end of valve rod (4c) respectively, and the distance of every bit countershaft (12) axis on the curve that cylinder (33) is gone up with steel ball (31) contacts in cam (32) rotation process increases continuously with the variation of angular displacement of the cam or reduces.
6. one control air valve, it has valve (1), be installed in three stop valves (2a) in three cavitys in the valve body (1) respectively, (2b), (2c), be fixed on the valve seat (3) on the valve body (1), three valve rods (4a), (4b), (4c) and be used to make valve rod (4a), (4b), three springs (5a) that (4c) reset, (5b), (5c), it is characterized in that, three valve rods (4a), (4b), an end (4c) is connected with separately operating mechanism respectively, three valve rods (4a), (4b), the other end (4c) respectively with three stop valves (2a), (2b), (2c) connect, three stop valves (2a), (2b), (2c) all has checking-valve body (6), be fixed on the checking-valve body (6) by valve seat (7), be installed in the spool (8) that ends moving up and down in the checking-valve body (6), be used to make by spring (10) that spool (8) resets and be installed on spool (8) by valve pad (9), wherein stop valve (2a) and the upper-lower position of stop valve (2b) in valve body (1) are fixed, one end of stop valve (2c) is equipped with balance spring (30), balance spring (30) is opposite to the direction of the pressure of stop valve (2c) with chamber (36c) middle gas to the direction of the elastic force of stop valve (2c), three stop valves (2a), (2b), (2c) chamber (34) in the checking-valve body separately (6) is communicated with suction port (11) on the checking-valve body (6), three suction ports (11) all are communicated with suction port (37) on the valve body (1), three stop valves (2a), (2b), (2c) has chamber (36a) respectively between checking-valve body separately (6) and the valve body (1), (36b), (36c), three stop valves (2a), chamber (36a) (2b) and (2c), (36b) and (36c) respectively with the air outlet (35a) of valve body (1), (35b) and (35c) be communicated with chamber (36a), (36b), (36c) and between suction port (37) on the valve body (1) and the suction port (11) on the checking-valve body (6) respectively by seal arrangement (13a), (13b), (13c) sealing.
7. one control air valve according to claim 6, it is characterized in that, the operating mechanism of the valve rod (4a) of stop valve (2a) has steel ball (22), handle (19), coupled arm (24), plunger (26) and be installed in seal ring (27) in the cylinder (29), handle (19) is installed in the rotating shaft (23), handle (19) has lug boss (20) and depressed part (21), steel ball (22) contacts with lug boss (20) or depressed part (21) with an end of valve rod (4a) respectively, coupled arm (24) is installed in the rotating shaft (23), one side of handle (19) has the step (25) that can contact with coupled arm (24), one end of coupled arm (24) can with an end in contact of plunger (26), the other end of plunger (26) is equipped with seal ring (27), and cylinder (29) has suction port (28).
8. according to claim 6 or 7 described one control air valve, it is characterized in that, the operating mechanism of the valve rod (4b) of stop valve (2b) has steel ball (14), cam (16) and is fixed on handle (15) on the cam (18), cam (16) is installed in the rotating shaft (12), cam (16) has bigger cylndrical surface of radius (18) and the less cylndrical surface (17) of radius, and steel ball (14) contacts with cylndrical surface (18) or cylndrical surface (17) with an end of valve rod (4b) respectively.
9. one control air valve according to claim 8, it is characterized in that, the operating mechanism of the valve rod (4c) of stop valve (2c) has steel ball (31), cam (32) and be fixed on handle (15) on the cam (32), cam (32) is installed in the rotating shaft (12), has cylinder (33) on the cam (32), steel ball (31) contacts with cylinder (33) with an end of valve rod (4c) respectively, and the distance of every bit countershaft (12) axis on the curve that cylinder (33) is gone up with steel ball (31) contacts in cam (32) rotation process increases continuously with the variation of angular displacement of the cam or reduces.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95235153 CN2241243Y (en) | 1995-11-27 | 1995-11-27 | Control air valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95235153 CN2241243Y (en) | 1995-11-27 | 1995-11-27 | Control air valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2241243Y true CN2241243Y (en) | 1996-11-27 |
Family
ID=33878903
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 95235153 Expired - Fee Related CN2241243Y (en) | 1995-11-27 | 1995-11-27 | Control air valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2241243Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103470816A (en) * | 2013-09-16 | 2013-12-25 | 四川制动科技股份有限公司 | Passenger /goods switching mechanism of control valve of quick truck |
| CN105402443A (en) * | 2015-12-18 | 2016-03-16 | 黄培华 | Multi-way control air valve |
-
1995
- 1995-11-27 CN CN 95235153 patent/CN2241243Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103470816A (en) * | 2013-09-16 | 2013-12-25 | 四川制动科技股份有限公司 | Passenger /goods switching mechanism of control valve of quick truck |
| CN105402443A (en) * | 2015-12-18 | 2016-03-16 | 黄培华 | Multi-way control air valve |
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