CN102336187B - Hand brake valve of rubber-tire vehicle - Google Patents
Hand brake valve of rubber-tire vehicle Download PDFInfo
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- CN102336187B CN102336187B CN201110220807.2A CN201110220807A CN102336187B CN 102336187 B CN102336187 B CN 102336187B CN 201110220807 A CN201110220807 A CN 201110220807A CN 102336187 B CN102336187 B CN 102336187B
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- valve
- spool
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- piston
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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 parking braking system of mine-used trackless rubber wheel vehicle.
Background technology
At present, the parking braking system of mine-used trackless rubber wheel vehicle generally adopts hand brake valve, is made up of parts such as guiding valve, valve body, air inlet, lid, exhaust outlet, valve, gas outlet, springs.Air inlet is connected with air tank, and gas outlet communicates with brake.When braking or air pressure lower than operating air pressure time, valve closes the path of air inlet to gas outlet under the action of the spring, forces the pressure increase of air tank, until service pressure, alarm signal stop report.When driver is descending by driver's cabin button promotion guiding valve Compress Spring, closes exhaust outlet, connect the passage of air inlet to gas outlet.At this moment, the brake off gradually because hand brake air chamber air pressure raises, vehicle can be started to walk; Otherwise can not drive a vehicle because of hand braking " braking ".Stop as needed place or meet emergency and need hand braking linked parking, as long as extract guiding valve, then the path of air inlet and gas outlet is cut off, gas outlet communicates with exhaust outlet, compressed air in brake piping will be discharged into air by gas outlet through exhaust outlet, then hand braking " braking " immediately, vehicle stops travelling.When air pressure is lower than 280Kpa, phenomenon as above also can be there is.
When the pressure of pneumatic system is lower than 280Kpa, above-mentioned hand brake valve can discharge guiding valve automatically, makes brakes Braking mode.The pressure of pneumatic system has two kinds of situations lower than 280Kpa: 1, pneumatic system pressure lower than 280Kpa and inlet pressure lower than 280Kpa; 2, gas outlet pipe breakage causes system pressure to reduce, and pressure is lower than 280Kpa.In the latter case, if gas outlet pressure higher than 280Kpa and brake occur will breaking down when not braking.
Therefore, need to provide a kind of hand brake valve of rubber-tire vehicle, effectively can 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 above-mentioned prior art hand brake valve when gas outlet pipe breakage, gas outlet pressure higher than operating pressure and brake occur do not brake, the problem easily broken down, the invention provides a kind of hand brake valve of rubber-tire vehicle, effectively can overcome the above-mentioned defect of prior art.
Technical solution provided by the invention is: a kind of hand brake valve of rubber-tire vehicle, it is characterized in that, comprise spool 1, valve pocket 2, valve body 3, cylinder block 4, piston 5, intermediate 6, Compress Spring 7, handle 9, described spool 1 is arranged in described valve pocket 2 and also can moves along the axis direction of described valve pocket 2, described valve pocket 2 is fixedly mounted in described valve body 3, described valve body 3 has air inlet 31, gas outlet 32 and exhaust outlet 33, the lower end of described valve body 3 is provided with described cylinder block 4, moveable described piston 5 is provided with in described cylinder block 4, described piston 5 is fixedly connected with the lower end of described spool 1, the bottom of described cylinder block 4 also has and controls mouth 41, the upper end of described valve body 3 is provided with described intermediate 6, described Compress Spring 7 is provided with in described intermediate 6, the lower end of described Compress Spring 7 is arranged on spring base 10, described spring base 10 is connected with described spool 1, the upper end of described spool 1 is fixedly connected with described handle 9.
Preferably, the upper end of described intermediate 6 is also provided with and connects end cap 11, and be provided with connecting rod 8 in described connection end cap, the lower end of described connecting rod 8 is fixedly connected with the upper end of described spool 1, and the upper end of described connecting rod 8 is fixedly connected with described handle 9.
Preferably, described piston 5 is fixedly connected with by the lower end of the first elastic cylindrical pin 12 with described spool 1, described spring base 10 is connected with described spool 1 by the second elastic cylindrical pin 13, the lower end of described connecting rod 8 is fixedly connected with by the upper end of the 3rd elastic cylindrical pin 14 with described spool 1, the upper end of described connecting rod 8 is connected with described handle 9 by screw thread, and described connection end cap 11 is outer is also provided with the locking nut 15 installing described hand brake valve.
Preferably, between described cylinder block 4 and described valve body 3, be provided with the first attachment spacers 16, between described intermediate 6 and described valve body 3, be provided with the second attachment spacers 17, at described intermediate 6, described connection between end cap 11 is provided with the 3rd attachment spacers 18.
Preferably, described spool 1, valve pocket 2, piston 5, cylinder block 4, Compress Spring 7, connecting rod 8, connect end cap 11 coaxial.
Further, described connection end cap 11, intermediate 6, valve body 3 and described cylinder block 4 are linked into an integrated entity by screw 19.
Preferably, sealing ring 20 is provided with between described spool 1 and described valve pocket 2, between described valve pocket 2 and described valve body 3, on described piston 5, between described piston 5 and described control mouth 41.
Preferably, described air inlet 31 is communicated with source of the gas, and described gas outlet 32 is connected with described brake, and described exhaust outlet 33 leads to air, and described control mouth 41 is connected by choke valve with described gas outlet 32.
Further, when the air pressure of described control mouth 41 is lower than operating pressure, described spool 1 moves down and is blocked by described air inlet 31 under the effect of described Compress Spring 7, and described gas outlet 32 is communicated with described exhaust outlet 33, and described rubber-tired cart is in on-position.
Further, press described handle 9, promote described spool 1 downward fortune merit and described air inlet 31 and described gas outlet 32 are cut off, and described gas outlet 32 is communicated with described exhaust outlet 33, makes described rubber-tired cart be in on-position.
By hand brake valve of rubber-tire vehicle provided by the invention, control mouth and air inlet are separated, is connected by pipeline, in pipeline, throttling arrangement should be installed.Such design can make this hand brake valve and some conventional mechanical commutation valve composition complex control loop used, and for controlling the force value of mouth, realizes different controlling functions.When can solve gas outlet pipe breakage, gas outlet pressure is still higher than operating pressure, and unclamped problem appears in brake, ensure that the security of operation, improves production efficiency simultaneously.
Accompanying drawing explanation
Fig. 1 shows the structural representation of the hand brake valve of rubber-tire vehicle according to one embodiment of the invention;
Fig. 2 shows the structural representation of hand brake valve of rubber-tire vehicle according to still another embodiment of the invention.
Detailed description of the invention
With reference to the accompanying drawings the specific embodiment of the present invention is described below.
Set forth a lot of detail in the following description so that fully understand the present invention, but 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 public specific embodiment.
Fig. 1 shows the structural representation according to hand brake valve of rubber-tire vehicle of the present invention.
As shown in Figure 1, the invention provides a kind of hand brake valve of rubber-tire vehicle, comprise spool 1, valve pocket 2, valve body 3, cylinder block 4, piston 5, intermediate 6, Compress Spring 7, handle 9, described spool 1 is arranged in described valve pocket 2 and also can moves along the axis direction of described valve pocket 2, described valve pocket 2 is fixedly mounted in described valve body 3, described valve body 3 has air inlet 31, gas outlet 32 and exhaust outlet 33, the lower end of described valve body 3 is provided with described cylinder block 4, moveable described piston 5 is provided with in described cylinder block 4, described piston 5 is fixedly connected with the lower end of described spool 1, the bottom of described cylinder block 4 also has and controls mouth 41, the upper end of described valve body 3 is provided with described intermediate 6, described Compress Spring 7 is provided with in described intermediate 6, the lower end of described Compress Spring 7 is arranged on spring base 10, described spring base 10 is connected with described spool 1, the upper end of described spool 1 is fixedly connected with described handle 9.
Such control mouth and gas outlet are provided separately, and can increase the function controlling mouth, be connected, expand more function, add the security of brake valve simultaneously with other function gas circuit.
Described piston 5 is fixedly connected with by the lower end of the first elastic cylindrical pin 12 with described spool 1, and described spring base 10 is connected with described spool 1 by the second elastic cylindrical pin 13.
Like this, spool 1, Compress Spring 7, handle 9, piston 6 are connected into an entirety, mutual transmission by the first elastic cylindrical pin 12, second elastic cylindrical pin 13, realize the controlling functions of spool 1.
Be provided with the first attachment spacers 16 between described cylinder block 4 and described valve body 3, between described intermediate 6 and described valve body 3, be provided with the second attachment spacers 17, the upper end of described intermediate 6 is provided with the 3rd attachment spacers 18.Attachment spacers 17 can make that piston 5 and cylinder 4 form a cavity worked alone, valve body 3 becomes one independently cavity, intermediate 6 form independently cavity, ensure the air-tightness of whole brake valve, prevent from leaking gas between each cavity, affect efficiency and the function of brake valve.
At valve body 1 and intermediate 6, between valve body 1 and cylinder 4, be also provided with valve pocket end cap 21, between valve pocket end cap 21 and described attachment spacers 17, be provided with minipad 22.Like this, valve pocket end cap 21 can ensure that valve pocket 2 is tightr with coordinating of spool 1, ensures the air-tightness of valve pocket 2, minipad 22 is installed sealing ring 20.
Described spool 1, valve pocket 2, piston 5, cylinder block 4, Compress Spring 7 are coaxial.Spool 1 moves at its axis direction, so the valve pocket 2 coordinated with spool 1 must be coaxial with spool 1, piston 5, Compress Spring 7 move with spool 1, so coaxial with spool 1, piston 5 coordinates with cylinder block 4, it is coaxial therefore must to ensure with spool, make spool 1 smooth motion, ensure rubber-tired cart normal brake application.
Described intermediate 6, valve body 3 and described cylinder block 4 are linked into an integrated entity by screw 19.Screw connects more firm, intermediate 6, valve body 3, cylinder block 4 is linked into an integrated entity, closely cooperates.
Sealing ring 20 is provided with between described spool 1 and described valve pocket 2, between described valve pocket 2 and described valve body 3, on described piston 5, between described piston 5 and described control mouth 41.Sealing ring 20 ensures the air-tightness of each junction of brake valve, improves the retardation efficiency of brake valve.
Described air inlet 31 is communicated with source of the gas, and described gas outlet 32 is connected with described brake, and described exhaust outlet 33 leads to air, and described control mouth 41 is connected by choke valve with described air inlet 31.Compressed Gas enters valve body work from air inlet 31, and during brake off, Compressed Gas is transferred to gas outlet 32 from air inlet 31, is amplified by hydraulic pressure, by releasing of brake; During brake hard; gas outlet 32 is connected with exhaust outlet 33; by outside Compressed Gas exits valve body 3, brake loses the maintenance of hydraulic pressure, and reset is held axletree tightly and braked; when gas outlet 32 air pressure reduces; described choke valve makes to control mouth 41 can not supplement the air pressure run off gas outlet very soon, forms a pressure differential, ensure when gas outlet pressure reduces between control mouth 41 and gas outlet 32; brake starts to brake, the safety of protection vehicle and personnel.
When the air pressure of described control mouth 41 is lower than operating pressure, described spool 1 moves down and is blocked by described air inlet 31 under the effect of described Compress Spring 7, and described gas outlet 32 is communicated with described exhaust outlet 33, and described rubber-tired cart is in on-position.
Press described handle 9, promote described spool 1 and move downward described air inlet 31 and described gas outlet 32 are cut off, and described gas outlet 32 is communicated with described exhaust outlet 33, makes described rubber-tired cart enter on-position.
The specific works principle of hand brake valve provided by the invention is: air inlet 31 connects air tank, and gas outlet 32 connects brake, and exhaust outlet 33 leads to air.Setting normal operating air pressure is 280Kpa, if control mouth 41 pressure lower than 280Kpa, spool 1 is in position shown in Fig. 1 under the effect of Compress Spring 7, and now gas outlet 32 is communicated with exhaust outlet 33, and rubber-tired cart is in braking state, and air inlet 31 is blocked.When controlling mouth 41 pressure higher than 280Kpa, piston 5 promotes move upward described Compress Spring 7 to the piston 5 of compression and attachment spacers 16 of spool 1 under the influence of air pressure and collides.Now air inlet 31 is communicated with gas outlet 32, and remove the braking of rubber-tired cart, exhaust outlet 33 is blocked.Handle 9 can use in any case, and handle 9, spool 1, piston 5 three are connected as one by the first elastic cylindrical pin 12, second elastic cylindrical pin 13.In case of emergency need brake time, can press lower handle 9 immediately, duty now with control mouth 41 pressure lower than 280Kpa time, gas outlet 32 is communicated with exhaust outlet 33, and rubber-tired cart enters braking state.During vehicle launch, pulled up by handle 9, spool 1 moves upward under the drive of handle 9, and air inlet 31 is communicated with gas outlet 32, and the Compressed Gas of air tank enters brake by air inlet 31, gas outlet 32, removes the braking of rubber-tired cart.
When gas outlet 32, pipe breakage causes system pressure to reduce, pressure is lower than 280Kpa, if the pressure at gas outlet 32 and Stopper contact position is higher than 280Kpa, when brake is braked not yet, vehicle is advanced as continued will be out of hand, break down, now, control the pressure of mouth 41 lower than 280Kpa, the elastic force of Compress Spring 7 is greater than the thrust of piston 5 bottom, spool 1 is pushed into bottom by Compress Spring 7, air inlet 31 is closed, gas outlet 32 is communicated with exhaust outlet 33, the gas at gas outlet 32 place is discharged to air, vehicle enters on-position automatically, driver can carry out maintenance process to vehicle.
Fig. 2 shows the structural representation of hand brake valve of rubber-tire vehicle according to still another embodiment of the invention.
As shown in Figure 2, another embodiment of the present invention, the basic structure of the embodiment shown in Fig. 2 is identical with the embodiment shown in Fig. 1, and its difference is:
The upper end of described intermediate 6 is also provided with and connects end cap 11, and arrange extension bar 8 to some extent in described connection end cap, the lower end of described connecting rod 8 is fixedly connected with the upper end of described spool 1, and the upper end of described connecting rod 8 is fixedly connected with described handle 9.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 be subject to the shock of external force.
The lower end of described connecting rod 8 is fixedly connected with by the upper end of the 3rd elastic cylindrical pin 14 with described spool 1, and the upper end of described connecting rod 8 is connected with described handle 9 by screw thread.
Spool 1, Compress Spring 7, connecting rod 8, handle 9, piston 6 are connected into an entirety, mutual transmission by described first elastic cylindrical pin 12, second elastic cylindrical pin 13, the 3rd elastic cylindrical pin 14, realize the controlling functions of spool 1.
Described connection end cap 11 is outer is also provided with the locking nut 15 installing described hand brake valve.Described locking nut 15, for whole hand brake valve is fixed on vehicle frame, is convenient to driver's operation.
Described connection end cap 11, intermediate 6, valve body 3 and described cylinder block 4 are linked into an integrated entity by screw 19.
Described connection end cap 11 and described spool 1, valve pocket 2, piston 5, cylinder block 4, Compress Spring 7, connecting rod 8 are coaxial.
Be provided with the first attachment spacers 16 between described cylinder block 4 and described valve body 3, between described intermediate 6 and described valve body 3, be provided with the second attachment spacers 17, at described intermediate 6, described connection between end cap 11 is provided with the 3rd attachment spacers 18.Attachment spacers 17 can make that piston 5 and cylinder 4 form a cavity worked alone, valve body 3 becomes one independently cavity, intermediate 6 form independently cavity with Compress Spring 7, ensure the air-tightness of whole brake valve, prevent from leaking gas between each cavity, affect efficiency and the function of brake valve.At valve body 1 and intermediate 6, between valve body 1 and cylinder 4, be also provided with valve pocket end cap 21, between valve pocket end cap 21 and described attachment spacers 17, be provided with minipad 22.Like this, valve pocket end cap 21 can ensure that valve pocket 2 is tightr with coordinating of spool 1, ensures the air-tightness of valve pocket 2, minipad 22 is installed sealing ring 19.
In the above two embodiments, control mouth 41 and air inlet 31 separate by hand brake valve of rubber-tire vehicle provided by the invention, connected, should be provided with throttling arrangement in pipeline by pipeline.Such design can make this hand brake valve and some conventional mechanical commutation valve composition complex control loop used, and for controlling the force value of mouth 41, realizes different controlling functions.
It should be appreciated by those skilled in the art; connecting rod 8 in above-described embodiment is as the device of connecting handle 9 and spool 1; can omit in actual applications; handle 9 directly can be threaded connection is fixed on spool 1; every hand brake valve within the spirit and principles in the present invention; comprise the brake valve not containing connecting rod 8, all should be included within protection scope of the present invention.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (7)
1. a hand brake valve of rubber-tire vehicle, it is characterized in that, comprise spool (1), valve pocket (2), valve body (3), cylinder block (4), piston (5), intermediate (6), Compress Spring (7), handle (9), described spool (1) is arranged in described valve pocket (2) and also can moves along the axis direction of described valve pocket (2), described valve pocket (2) is fixedly mounted in described valve body (3), described valve body (3) has air inlet (31), gas outlet (32) and exhaust outlet (33), the lower end of described valve body (3) is provided with described cylinder block (4), moveable described piston (5) is provided with in described cylinder block (4), described piston (5) is fixedly connected with the lower end of described spool (1), the bottom of described cylinder block (4) also has and controls mouth (41), the upper end of described valve body (3) is provided with described intermediate (6), described Compress Spring (7) is provided with in described intermediate (6), the lower end of described Compress Spring (7) is arranged on spring base (10), described spring base (10) is connected with described spool (1), the upper end of described spool (1) is fixedly connected with described handle (9),
Described air inlet (31) is communicated with source of the gas, described gas outlet (32) is connected with brake, described exhaust outlet (33) leads to air, described control mouth (41) is connected by choke valve with described gas outlet (32), when the air pressure of described control mouth (41) is lower than operating pressure, described spool (1) moves down and is blocked by described air inlet (31) under the effect of described Compress Spring (7), and described gas outlet (32) is communicated with described exhaust outlet (33), described rubber-tired cart is in on-position;
Press described handle (9), promote described spool (1) to move downward, described air inlet (31) and described gas outlet (32) are cut off, described gas outlet (32) are communicated with described exhaust outlet (33), make described rubber-tired cart be in on-position; Described handle (9) is pulled up, described spool (1) is moved upward, described air inlet (31) is communicated with described gas outlet (32), described exhaust outlet (33) is blocked, removes the braking of described rubber-tired cart.
2. hand brake valve of rubber-tire vehicle according to claim 1, it is characterized in that, the upper end of described intermediate (6) is also provided with and connects end cap (11), connecting rod (8) is provided with in described connection end cap, the lower end of described connecting rod (8) is fixedly connected with the upper end of described spool (1), and the upper end of described connecting rod (8) is fixedly connected with described handle (9).
3. hand brake valve of rubber-tire vehicle according to claim 2, it is characterized in that, described piston (5) is fixedly connected with by the lower end of the first elastic cylindrical pin (12) with described spool (1), described spring base (10) is connected with described spool (1) by the second elastic cylindrical pin (13), the lower end of described connecting rod (8) is fixedly connected with the upper end of described spool (1) by the 3rd elastic cylindrical pin (14), the upper end of described connecting rod (8) is connected with described handle (9) by screw thread, described connection end cap (11) is also provided with the locking nut (15) installing described hand brake valve outward.
4. hand brake valve of rubber-tire vehicle according to claim 3, it is characterized in that, the first attachment spacers (16) is provided with between described cylinder block (4) and described valve body (3), be provided with the second attachment spacers (17) between described intermediate (6) and described valve body (3), at described intermediate (6), described connection between end cap (11) be provided with the 3rd attachment spacers (18).
5. hand brake valve of rubber-tire vehicle according to claim 4, it is characterized in that, described spool (1), valve pocket (2), piston (5), cylinder block (4), Compress Spring (7), connecting rod (8), connection end cap (11) are coaxially.
6. hand brake valve of rubber-tire vehicle according to claim 5, it is characterized in that, described connection end cap (11), intermediate (6), valve body (3) and described cylinder block (4) are linked into an integrated entity by screw (19).
7. hand brake valve of rubber-tire vehicle according to any one of claim 1 to 6, it is characterized in that, between described spool (1) and described valve pocket (2), between described valve pocket (2) and described valve body (3), on described piston (5), between described piston (5) and described control mouth (41), be provided with sealing ring (20).
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 CN102336187A (en) | 2012-02-01 |
| CN102336187B true 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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| CN (1) | CN102336187B (en) |
Families Citing this family (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 |
| 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 |
| 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 |
| 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 |
| CN113983201B (en) * | 2021-11-18 | 2022-11-29 | 华南农业大学 | Three-position three-way stop valve for commercial vehicle |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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 |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5919655Y2 (en) * | 1981-10-29 | 1984-06-07 | 自動車機器株式会社 | Control valve for spring brake actuator |
| JPH01145561U (en) * | 1988-03-15 | 1989-10-06 |
-
2011
- 2011-08-03 CN CN201110220807.2A patent/CN102336187B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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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| CN102336187A (en) | 2012-02-01 |
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Address after: 050035 Xiangjiang Road, Shijiazhuang high tech Zone, Hebei, No. 418 Patentee after: JIKAI EQUIPMENT MANUFACTURING CO., LTD. Address before: 050035 No. 89, the Yellow River Avenue, hi tech Zone, Hebei, Shijiazhuang Patentee before: Shijiazhuang Zhongmei Coal Mine Equipment Manufacture Co., Ltd. |
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Effective date of registration: 20170110 Address after: Room 408, room 409, room 418, Xiangjiang Road, Shijiazhuang hi tech Zone, Hebei, 050035, China Patentee after: Hebei Mechanical & Electrical Technology Co., Ltd. Address before: 050035 Xiangjiang Road, Shijiazhuang high tech Zone, Hebei, No. 418 Patentee before: JIKAI EQUIPMENT MANUFACTURING CO., LTD. |
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