CN102336187A - Hand brake valve of rubber-tire vehicle - Google Patents
Hand brake valve of rubber-tire vehicle Download PDFInfo
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- CN102336187A CN102336187A CN2011102208072A CN201110220807A CN102336187A CN 102336187 A CN102336187 A CN 102336187A CN 2011102208072 A CN2011102208072 A CN 2011102208072A CN 201110220807 A CN201110220807 A CN 201110220807A CN 102336187 A CN102336187 A CN 102336187A
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Abstract
The invention discloses a hand brake valve of a rubber-tire vehicle, comprising a valve core, a valve bush, a valve body, an air cylinder body, a piston, an intermediate body, a compression spring and a handle. The valve core is mounted in the valve bush and can move along the axis of the valve bush, the valve bush is fixedly mounted in the valve body, the valve body is provided with an air intake, an air outlet and an air vent, and the lower end of the valve body is provided with the air cylinder; the air cylinder is internally provided with the movable piston, the piston is fixedly connected with the lower end of the valve core, and the bottom end of the air cylinder is further provided with a control port; the intermediate body is arranged at the upper end of the valve body, and is internally provided with the compression spring; the lower end of the compression spring is mounted on a spring seat, the spring seat is connected with the valve core, and the upper end of the valve core is fixedly connected with the handle. With the technical scheme provided by the invention, different control functions can be realized, and brake efficiency and safety of the brake valve can be both improved.
Description
Technical field
The present invention relates to mine vehicle, more specifically, relate to a kind of hand brake valve of emergency brake system of mining railless free-wheeled vehicle.
Background technology
At present, the emergency brake system of mining railless free-wheeled vehicle generally adopts the hand brake valve, is made up of parts such as guiding valve, valve body, admission port, lid, exhausr port, valve, air extractor duct, springs.Admission port links to each other with air tank, and air extractor duct communicates with drg.When glancing impact or air pressure were lower than operating air pressure, valve was closed the path of admission port to air extractor duct under the effect of spring, forced the pressure of air tank to rise, till normal operating pressure, annunciator signal stop newspaper.Descending when chaufeur through operator's compartment button push guiding valve compression spring, close exhausr port, connect the passage of admission port to air extractor duct.At this moment, the brake off gradually because hand brake air chamber air pressure raises, vehicle can be started to walk; Otherwise because of hand braking " braking " can not drive a vehicle.Need hand braking linked parking like parking of need place or chance emergency situation; As long as extract guiding valve; Then the path of admission port and air extractor duct is cut off, and air extractor duct communicates with exhausr port, and the pressurized air in the brake piping will be discharged into atmosphere through exhausr port by air extractor duct; Then hand braking " braking " immediately, vehicle stops to go.When air pressure was lower than 280Kpa, phenomenon as above also can take place.
When the pressure of pneumatic system was lower than 280Kpa, above-mentioned hand brake valve ability automatic release guiding valve made the brake system autobrake.The pressure of pneumatic system is lower than 280Kpa has two kinds of situation: 1, to be lower than 280Kpa be that admission port pressure is lower than 280Kpa to pneumatic system pressure; 2, the air extractor duct pipe breakage causes system pressure to reduce, and pressure is lower than 280Kpa.Under second kind of situation,, air extractor duct pressure occurs that glancing impact will et out of order if being higher than 280Kpa and drg.
Therefore, a kind of rubber-tired cart hand brake valve need be provided, can effectively avoid the generation of the problems referred to above, solve the unsafe problem of hand brake valve.
Summary of the invention
In order to solve in the above-mentioned prior art hand brake valve under the situation of air extractor duct pipe breakage; Air extractor duct pressure is higher than operation pressure and not braking appears in drg; Be prone to the problem of et out of order, the invention provides a kind of rubber-tired cart hand brake valve, can effectively overcome the above-mentioned defective of prior art.
Technical solution provided by the invention is: a kind of rubber-tired cart hand brake valve, it is characterized in that, and comprise spool 1, valve pocket 2, valve body 3, cylinder block 4, piston 5, pipe bracket 6, compression spring 7, handle 9; Said spool 1 is installed in the said valve pocket 2 and can moves along the axis direction of said valve pocket 2; Said valve pocket 2 is fixedly mounted in the said valve body 3, has admission port 31, air extractor duct 32 and exhausr port 33 on the said valve body 3, and the lower end of said valve body 3 is provided with said cylinder block 4; Be provided with movably said piston 5 in the said cylinder block 4; Said piston 5 is captiveed joint with the lower end of said spool 1, and the bottom of said cylinder block 4 also has control mouth 41, and the upper end of said valve body 3 is provided with said pipe bracket 6; Be provided with said compression spring 7 in the said pipe bracket 6; The lower end of said compression spring 7 is installed on the spring perch 10, and said spring perch 10 is connected with said spool 1, captives joint with said handle 9 in the upper end of said spool 1.
Preferably, the upper end of said pipe bracket 6 also is provided with and connects end cap 11, is provided with pipe link 8 in the said connection end cap, captives joint with the upper end of said spool 1 in the lower end of said pipe link 8, captives joint with said handle 9 in the upper end of said pipe link 8.
Preferably; Said piston 5 is captiveed joint with the lower end of said spool 1 through first elastic cylindrical pin 12; Said spring perch 10 is connected with said spool 1 through second elastic cylindrical pin 13; Captive joint with the upper end of said spool 1 through the 3rd elastic cylindrical pin 14 in the lower end of said pipe link 8, the upper end of said pipe link 8 is connected with said handle 9 through screw thread, the said connection end cap 11 outer jam nuts 15 that said hand brake valve is installed that also are provided with.
Preferably, be provided with first between said cylinder block 4 and the said valve body 3 and be connected pad 16, be provided with second between said pipe bracket 6 and the said valve body 3 and be connected pad 17, be connected at said pipe bracket 6 and said and be provided with the 3rd between the end cap 11 and connect pad 18.
Preferably, said spool 1, valve pocket 2, piston 5, cylinder block 4, compression spring 7, pipe link 8, to connect end cap 11 coaxial.
Further, said connection end cap 11, pipe bracket 6, valve body 3 and said cylinder block 4 link into an integrated entity through screw 19.
Preferably, between said spool 1 and the said valve pocket 2, between said valve pocket 2 and the said valve body 3, on the said piston 5, be provided with seal ring 20 between said piston 5 and the said control mouthfuls 41.
Preferably, said admission port 31 is communicated with source of the gas, and said air extractor duct 32 links to each other with said drg, and said exhausr port 33 leads to atmosphere, and said control mouth 41 and said air extractor duct 32 are connected through flow regulating valve.
Further, when the air pressure of said control mouth 41 was lower than operation pressure, said spool 1 moved down under the effect of said compression spring 7 said admission port 31 is blocked, and said air extractor duct 32 is communicated with said exhausr port 33, and said rubber-tired cart is in braking mode.
Further, press said handle 9, promote said spool 1 downwards the fortune merit said admission port 31 and said air extractor duct 32 are cut off, and said air extractor duct 32 is communicated with said exhausr port 33, makes said rubber-tired cart be in braking mode.
Through rubber-tired cart hand brake valve provided by the invention, will control mouth and separate with admission port, connect through pipeline, in the pipeline throttling device should be installed.Design can make the conventional mechanical commutation valve that uses of this hand brake valve and some form compound control loop like this, is used to the force value of control mouth, realizes the Different control function.In the time of simultaneously can solving the air extractor duct pipe breakage, air extractor duct pressure still is higher than operation pressure, and unclamped problem appears in drg, has guaranteed the safety of operation, has improved production efficiency.
Description of drawings
Fig. 1 shows the structural representation according to the rubber-tired cart hand brake valve of one embodiment of the invention;
Fig. 2 shows the structural representation of rubber-tired cart hand brake valve according to still another embodiment of the invention.
The specific embodiment
Below according to the description of drawings specific embodiment of the present invention.
Set forth a lot of details in the following description so that make much of the present invention, still, the present invention can also adopt other to be different from other modes described here and implement, and therefore, the present invention is not limited to the restriction of following disclosed specific embodiment.
Fig. 1 shows the structural representation according to rubber-tired cart hand brake valve of the present invention.
As shown in Figure 1, the invention provides a kind of rubber-tired cart hand brake valve, comprise spool 1, valve pocket 2, valve body 3, cylinder block 4, piston 5, pipe bracket 6, compression spring 7, handle 9; Said spool 1 is installed in the said valve pocket 2 and can moves along the axis direction of said valve pocket 2; Said valve pocket 2 is fixedly mounted in the said valve body 3, has admission port 31, air extractor duct 32 and exhausr port 33 on the said valve body 3, and the lower end of said valve body 3 is provided with said cylinder block 4; Be provided with movably said piston 5 in the said cylinder block 4; Said piston 5 is captiveed joint with the lower end of said spool 1, and the bottom of said cylinder block 4 also has control mouth 41, and the upper end of said valve body 3 is provided with said pipe bracket 6; Be provided with said compression spring 7 in the said pipe bracket 6; The lower end of said compression spring 7 is installed on the spring perch 10, and said spring perch 10 is connected with said spool 1, captives joint with said handle 9 in the upper end of said spool 1.
The control mouth is arranged with the air extractor duct branch like this, can increase the function of control mouth, links to each other with other function gas circuit, expands more function, has increased the safety of brake activation valve simultaneously.
Said piston 5 is captiveed joint with the lower end of said spool 1 through first elastic cylindrical pin 12, and said spring perch 10 is connected with said spool 1 through second elastic cylindrical pin 13.
Like this, first elastic cylindrical pin 12, second elastic cylindrical pin 13 connect into an integral body with spool 1, compression spring 7, handle 9, piston 6, and transmission mutually realizes the controllable function of spool 1.
Be provided with first between said cylinder block 4 and the said valve body 3 and be connected pad 16, be provided with second between said pipe bracket 6 and the said valve body 3 and be connected pad 17, be provided with the 3rd in the upper end of said pipe bracket 6 and connect pad 18.Connection pad 17 can make piston 5 and cylinder 4 the formation cavity that works alone, a valve body 3 become one, and independently cavity, pipe bracket 6 form independently cavity; Guarantee the air-tightness of whole brake activation valve; Prevent to leak gas between each cavity, influence the efficient and the function of brake activation valve.
Between valve body 1 and pipe bracket 6, valve body 1 and cylinder 4, also be provided with valve pocket end cap 21, be provided with minipad 22 between the pad 17 in valve pocket end cap 21 and said the connection.Like this, valve pocket end cap 21 can guarantee that valve pocket 2 is tightr with cooperating of spool 1, guarantees the air-tightness of valve pocket 2, and seal ring 20 is installed on the minipad 22.
Said spool 1, valve pocket 2, piston 5, cylinder block 4, compression spring 7 are coaxial.Spool 1 is in its axis direction motion; So the valve pocket 2 that cooperates with spool 1 must be coaxial with spool 1; Piston 5, compression spring 7 are with spool 1 motion, so coaxial with spool 1, piston 5 cooperates, therefore must guarantee with spool coaxial with cylinder block 4; Make spool 1 smooth motion, guarantee the rubber-tired cart normal brake application.
Said pipe bracket 6, valve body 3 and said cylinder block 4 link into an integrated entity through screw 19.Screw connects more firm, and pipe bracket 6, valve body 3, cylinder block 4 are linked into an integrated entity, and closely cooperates.
Between said spool 1 and the said valve pocket 2, between said valve pocket 2 and the said valve body 3, on the said piston 5, be provided with seal ring 20 between said piston 5 and the said control mouthfuls 41.Seal ring 20 guarantees the air-tightness of each junction of brake activation valve, improves the brake efficiency of brake activation valve.
Said admission port 31 is communicated with source of the gas, and said air extractor duct 32 links to each other with said drg, and said exhausr port 33 leads to atmosphere, and said control mouth 41 and said admission port 31 are connected through flow regulating valve.Pressure gas gets into valve body work from admission port 31, and during brake off, pressure gas is transferred to air extractor duct 32 from admission port 31, amplifies through hydraulic pressure, with releasing of brake; During emergency braking, air extractor duct 32 is connected with exhausr port 33, and pressure gas is discharged outside the valve body 3; Drg loses keeping of hydraulic pressure, resets to hold axletree tightly and brake, when air extractor duct 32 air pressure reduce; The feasible control mouth 41 of said flow regulating valve can not replenish the air pressure that air extractor duct runs off very soon, between control mouth 41 and air extractor duct 32, forms a difference of pressure, guarantees when air extractor duct pressure reduces; Drg begins to brake, protection vehicle and personnel's safety.
When the air pressure of said control mouth 41 was lower than operation pressure, said spool 1 moved down under the effect of said compression spring 7 said admission port 31 is blocked, and said air extractor duct 32 is communicated with said exhausr port 33, and said rubber-tired cart is in braking mode.
Press said handle 9, promote said spool 1 and move downward said admission port 31 and said air extractor duct 32 are cut off, and said air extractor duct 32 is communicated with said exhausr port 33, make said rubber-tired cart entering braking mode.
The concrete principle of work of hand brake valve provided by the invention is: admission port 31 connects air tank, and air extractor duct 32 connects drg, exhausr port 33 logical atmosphere.Setting normal operation air pressure is 280Kpa, if control mouthful 41 pressure are lower than 280Kpa, spool 1 is in position shown in Figure 1 under the effect of compression spring 7, and this moment, air extractor duct 32 was communicated with exhausr port 33, and rubber-tired cart is in braking state, and admission port 31 is blocked.When control mouthful 41 pressure were higher than 280Kpa, piston 5 promoted spool 1 upward movement and compresses said compression spring 7 to piston 5 and be connected pad 17 and collide under the effect of air pressure.This moment, admission port 31 was communicated with air extractor duct 32, removed the braking of rubber-tired cart, and exhausr port 33 is blocked.Handle 9 can use under the situation arbitrarily, and handle 9, spool 1, piston 5 threes are connected as one by first elastic cylindrical pin 12, second elastic cylindrical pin 13.In the time of need braking like emergency situation, can press lower handle 9 immediately, when the mode of operation of this moment was lower than 280Kpa with control mouthful 41 pressure, air extractor duct 32 was communicated with exhausr port 33, and rubber-tired cart gets into braking state.During vehicle launch, handle 9 is pulled up, spool 1 is upward movement under the drive of handle 9, and admission port 31 is communicated with air extractor duct 32, and the pressure gas of air tank gets into drg through admission port 31, air extractor duct 32, removes the braking of rubber-tired cart.
Reduce when air extractor duct 32 pipe breakages cause system pressure, pressure is lower than 280Kpa, if the pressure of air extractor duct 32 and drg contact site is higher than 280Kpa; Drg is glancing impact not yet, and vehicle will get out of hand as continuing to advance, et out of order; At this moment, the pressure of control mouth 41 is lower than 280Kpa, and the elastic force of compression spring 7 is greater than the thrust of piston 5 bottoms; Compression spring 7 is pushed into the bottom with spool 1, and admission port 31 is closed, and air extractor duct 32 is communicated with exhausr port 33; The gas at air extractor duct 32 places is arranged to atmosphere, and vehicle gets into braking mode automatically, and chaufeur can carry out maintenance process to vehicle.
Fig. 2 shows the structural representation of rubber-tired cart hand brake valve according to still another embodiment of the invention.
As shown in Figure 2, another embodiment of the present invention, the basic structure of embodiment shown in Figure 2 is identical with embodiment shown in Figure 1, and its difference is:
The upper end of said pipe bracket 6 also is provided with and connects end cap 11, and extension bar 8 to some extent is set in the said connection end cap, captives joint with the upper end of said spool 1 in the lower end of said pipe link 8, captives joint with said handle 9 in the upper end of said pipe link 8.Connect end cap 11 and be convenient to the installation of hand brake valve on car body, protect spool 1 simultaneously, avoid spool 1 to receive the bump of external force.
Captive joint with the upper end of said spool 1 through the 3rd elastic cylindrical pin 14 in the lower end of said pipe link 8, the upper end of said pipe link 8 is connected with said handle 9 through screw thread.
Said first elastic cylindrical pin 12, second elastic cylindrical pin 13, the 3rd elastic cylindrical pin 14 connect into an integral body with spool 1, compression spring 7, pipe link 8, handle 9, piston 6, and transmission mutually realizes the controllable function of spool 1.
The said connection end cap 11 outer jam nuts 15 that said hand brake valve is installed that also are provided with.Said jam nut 15 is used for whole hand brake valve is fixed on vehicle frame, is convenient to driver's operation.
Said connection end cap 11, pipe bracket 6, valve body 3 and said cylinder block 4 link into an integrated entity through screw 19.
Said connection end cap 11 and said spool 1, valve pocket 2, piston 5, cylinder block 4, compression spring 7, pipe link 8 are coaxial.
Be provided with first between said cylinder block 4 and the said valve body 3 and be connected pad 16, be provided with second between said pipe bracket 6 and the said valve body 3 and be connected pad 17, be connected at said pipe bracket 6 and said and be provided with the 3rd between the end cap 11 and connect pad 18.Connection pad 17 can make piston 5 and cylinder 4 the formation cavity that works alone, a valve body 3 become one, and independently cavity, pipe bracket 6 form independently cavity with compression spring 7; Guarantee the air-tightness of whole brake activation valve; Prevent to leak gas between each cavity, influence the efficient and the function of brake activation valve.Between valve body 1 and pipe bracket 6, valve body 1 and cylinder 4, also be provided with valve pocket end cap 21, be provided with minipad 22 between the pad 17 in valve pocket end cap 21 and said the connection.Like this, valve pocket end cap 21 can guarantee that valve pocket 2 is tightr with cooperating of spool 1, guarantees the air-tightness of valve pocket 2, and seal ring 19 is installed on the minipad 22.
In above-mentioned two embodiment, rubber-tired cart hand brake valve provided by the invention will be controlled mouth 41 and separate with admission port 31, connect through pipeline, in the pipeline throttling device should be installed.Design can make the conventional mechanical commutation valve that uses of this hand brake valve and some form compound control loop like this, is used to the force value of control mouth 41, realizes the Different control function.
It should be appreciated by those skilled in the art; Pipe link 8 in the foregoing description is as the device that connects handle 9 and spool 1; In practical application, can omit, can handle 9 directly be fixed on the spool 1 every hand brake valve within spirit of the present invention and principle through being threaded; Comprise the brake activation valve that does not contain pipe link 8, all should be included within protection scope of the present invention.
The above is merely the preferred embodiments of the present invention, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.All within spirit of the present invention and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. rubber-tired cart hand brake valve; It is characterized in that; Comprise spool (1), valve pocket (2), valve body (3), cylinder block (4), piston (5), pipe bracket (6), compression spring (7), handle (9), said spool (1) is installed in the said valve pocket (2) and can moves along the axis direction of said valve pocket (2), and said valve pocket (2) is fixedly mounted in the said valve body (3); Have admission port (31), air extractor duct (32) and exhausr port (33) on the said valve body (3); The lower end of said valve body (3) is provided with said cylinder block (4), is provided with movably said piston (5) in the said cylinder block (4), and said piston (5) is captiveed joint with the lower end of said spool (1); The bottom of said cylinder block (4) also has control mouthful (41); The upper end of said valve body (3) is provided with said pipe bracket (6), is provided with said compression spring (7) in the said pipe bracket (6), and the lower end of said compression spring (7) is installed on the spring perch (10); Said spring perch (10) is connected with said spool (1), captives joint with said handle (9) in the upper end of said spool (1).
2. rubber-tired cart hand brake valve according to claim 1; It is characterized in that; The upper end of said pipe bracket (6) also is provided with and connects end cap (11); Being provided with pipe link (8) in the said connection end cap, captives joint with the upper end of said spool (1) in the lower end of said pipe link (8), captives joint with said handle (9) in the upper end of said pipe link (8).
3. rubber-tired cart hand brake valve according to claim 2; It is characterized in that; Said piston (5) is captiveed joint with the lower end of said spool (1) through first elastic cylindrical pin (12); Said spring perch (10) is connected with said spool (1) through second elastic cylindrical pin (13); Captive joint with the upper end of said spool (1) through the 3rd elastic cylindrical pin (14) in the lower end of said pipe link (8), the upper end of said pipe link (8) is connected with said handle (9) through screw thread, the outer jam nut (15) that said hand brake valve is installed that also is provided with of said connection end cap (11).
4. rubber-tired cart hand brake valve according to claim 3; It is characterized in that; Be provided with first between said cylinder block (4) and the said valve body (3) and be connected pad (16); Be provided with second between said pipe bracket (6) and the said valve body (3) and be connected pad (17), be connected at said pipe bracket (6) and said and be provided with the 3rd between the end cap (11) and connect pad (18).
5. rubber-tired cart hand brake valve according to claim 4 is characterized in that, said spool (1), valve pocket (2), piston (5), cylinder block (4), compression spring (7), pipe link (8), to connect end cap (11) coaxial.
6. rubber-tired cart hand brake valve according to claim 5 is characterized in that, said connection end cap (11), pipe bracket (6), valve body (3) and said cylinder block (4) link into an integrated entity through screw (19).
7. according to each described rubber-tired cart hand brake valve in the claim 1 to 6; It is characterized in that, between said spool (1) and the said valve pocket (2), between said valve pocket (2) and the said valve body (3), said piston (5) goes up, be provided with seal ring (20) between said piston (5) and the said control mouth (41).
8. rubber-tired cart hand brake valve according to claim 7; It is characterized in that said admission port (31) is communicated with source of the gas, said air extractor duct (32) links to each other with said drg; Said exhausr port (33) leads to atmosphere, and said control mouth (41) is connected through flow regulating valve with said air extractor duct (32).
9. rubber-tired cart hand brake valve according to claim 8; It is characterized in that; When the air pressure of said control mouthful (41) is lower than operation pressure; Said spool (1) moves down under the effect of said compression spring (7) said admission port (31) is blocked, and said air extractor duct (32) is communicated with said exhausr port (33), and said rubber-tired cart is in braking mode.
10. rubber-tired cart hand brake valve according to claim 8; It is characterized in that; Press said handle (9); Promote said spool (1) and transport merit downwards said admission port (31) and said air extractor duct (32) are cut off, and said air extractor duct (32) is communicated with said exhausr port (33), make said rubber-tired cart be in braking mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110220807.2A CN102336187B (en) | 2011-08-03 | 2011-08-03 | Hand brake valve of rubber-tire vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110220807.2A CN102336187B (en) | 2011-08-03 | 2011-08-03 | Hand brake valve of rubber-tire vehicle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102336187A true CN102336187A (en) | 2012-02-01 |
| CN102336187B CN102336187B (en) | 2015-04-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110220807.2A Expired - Fee Related CN102336187B (en) | 2011-08-03 | 2011-08-03 | Hand brake valve of rubber-tire vehicle |
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| Country | Link |
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| CN (1) | CN102336187B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102367876A (en) * | 2011-09-28 | 2012-03-07 | 芜湖市安芜汽车制动元件有限公司 | Hand-control brake valve |
| CN107054338A (en) * | 2016-12-27 | 2017-08-18 | 芜湖盛力科技股份有限公司 | A kind of harbour machinery brakes hand braking valve |
| CN107554511A (en) * | 2017-09-22 | 2018-01-09 | 眉山中车制动科技股份有限公司 | A kind of hand relieving valve and stress reduction device |
| CN108730582A (en) * | 2018-08-01 | 2018-11-02 | 无锡市华通气动制造有限公司 | One kind manually controlling adjusting blowing plant |
| CN113983201A (en) * | 2021-11-18 | 2022-01-28 | 华南农业大学 | Three-position three-way stop valve for commercial vehicle |
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| CN201287711Y (en) * | 2008-10-24 | 2009-08-12 | 柯寿乾 | Multifunctional auxiliary brake valve |
| CN202283914U (en) * | 2011-08-03 | 2012-06-27 | 石家庄中煤装备制造股份有限公司 | Manual brake valve of rubber wheel vehicle |
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| US3107126A (en) * | 1961-06-28 | 1963-10-15 | Bendix Westinghouse Automotive | Spring brake emergency release system |
| US3746401A (en) * | 1971-04-27 | 1973-07-17 | Wagner Electric Corp | Control valve and system |
| JPS5796066U (en) * | 1981-10-29 | 1982-06-12 | ||
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102367876A (en) * | 2011-09-28 | 2012-03-07 | 芜湖市安芜汽车制动元件有限公司 | Hand-control brake valve |
| CN107054338A (en) * | 2016-12-27 | 2017-08-18 | 芜湖盛力科技股份有限公司 | A kind of harbour machinery brakes hand braking valve |
| CN107054338B (en) * | 2016-12-27 | 2023-10-20 | 芜湖盛力科技股份有限公司 | Manual control brake valve of harbour machinery brake system |
| CN107554511A (en) * | 2017-09-22 | 2018-01-09 | 眉山中车制动科技股份有限公司 | A kind of hand relieving valve and stress reduction device |
| CN107554511B (en) * | 2017-09-22 | 2024-01-23 | 眉山中车制动科技股份有限公司 | Manual relief valve and pressure relief device |
| CN108730582A (en) * | 2018-08-01 | 2018-11-02 | 无锡市华通气动制造有限公司 | One kind manually controlling adjusting blowing plant |
| CN108730582B (en) * | 2018-08-01 | 2023-08-11 | 无锡市华通气动制造有限公司 | Manual control compressed air adjusting device |
| CN113983201A (en) * | 2021-11-18 | 2022-01-28 | 华南农业大学 | Three-position three-way stop valve for commercial vehicle |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102336187B (en) | 2015-04-29 |
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