CN202101857U - Tread brake unit testing stand - Google Patents

Tread brake unit testing stand Download PDF

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Publication number
CN202101857U
CN202101857U CN2011200225331U CN201120022533U CN202101857U CN 202101857 U CN202101857 U CN 202101857U CN 2011200225331 U CN2011200225331 U CN 2011200225331U CN 201120022533 U CN201120022533 U CN 201120022533U CN 202101857 U CN202101857 U CN 202101857U
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CN
China
Prior art keywords
tread brake
brake unit
tread
support
force cell
Prior art date
Application number
CN2011200225331U
Other languages
Chinese (zh)
Inventor
刘作琪
陆啸秋
朱新宇
庄国明
欧阳坤
Original Assignee
铁道部运输局
南京浦镇海泰制动设备有限公司
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Application filed by 铁道部运输局, 南京浦镇海泰制动设备有限公司 filed Critical 铁道部运输局
Priority to CN2011200225331U priority Critical patent/CN202101857U/en
Application granted granted Critical
Publication of CN202101857U publication Critical patent/CN202101857U/en

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Abstract

The present utility model provides a tread brake unit testing stand which comprises a mechanical part and an electrical control part. The mechanical part comprises a clamping tool for clamping a tread brake unit, a force-measuring sensor for obtaining the output force of the tread brake unit, a displacement sensor for obtaining the output displacement of the tread brake unit, and a horizontal loading desk. The electrical control part comprises a simulation control air passage for simulating vehicle air passages, and a PC control system for controlling the simulation control air passage. In the tread brake unit testing stand, the vehicle air passage work is simulated through the PC control system and the simulation control air passage to enable the tread brake unit to act according to test steps, the output force, the output displacement, the internal gas voltage and other obtained information are fed back to the PC control system, various needed parameters are obtained through calculating, the automation of the testing process and the reliability of the resting result are realized, and the testing efficiency is greatly increased.

Description

Tread brake single test platform
Technical field
The utility model relates to the rolling stock braking technology, relates in particular to a kind of tread brake single test platform that is used to carry out the tread brake unit testing.
Background technology
At present; Highest running speed 160km/h generally adopts the tread units detent with the brake rigging of interior domestic and international urban rail transit vehicles, and it has effect clearly to alleviating vehicle weight, uniform distribution damping force, raising retardation efficiency, minimizing maintenance and improving dynamic performance.
The major function of tread brake unit comprises: alleviation, service braking and parking brake commonly used.Fig. 1 a is the alleviation synoptic diagram commonly used of tread brake unit, shown in Fig. 1 a, when commonly used the alleviation, parks cylinder gas P1 entering and parks cylinder; Parking in the cylinder a has pressure, and checking cylinder gas P 2 discharges checking cylinder, no pressure in the checking cylinder b; Brake piston b1 resets, and leaves wheel c, release of brake.Fig. 1 b is the service braking synoptic diagram of tread brake unit.Shown in Fig. 1 b, at this moment, park cylinder gas P1 entering and park cylinder a; Checking cylinder gas P2 gets into checking cylinder b, and parking in the cylinder a with in the checking cylinder b all has pressure, parks all holddown springs of piston a1 and brake piston b1; Brake piston b1 compresses wheel c to left movement, produces service braking.Fig. 1 c is the parking brake synoptic diagram of tread brake unit.Shown in Fig. 1 c; At this moment, park cylinder gas P1 discharge and park cylinder a, checking cylinder gas P2 discharges checking cylinder b; Park in cylinder a and the checking cylinder b and all do not have pressure; But because the elasticity coefficient of parking the big back-moving spring a2 on the piston a1 greater than the little back-moving spring b2 on the brake piston b1, so brake piston b1 compresses wheel c with parking piston a1 to left movement, and produces parking brake.
Test to the tread brake unit is for one type to comprise performance tests such as strength test, sensitivity test, high pressure gas tightness test; Another kind of is exactly the endurancing of testing its serviceable life.And the essence of these tests is exactly, the power output of test tread brake unit in the process of above-mentioned alleviation commonly used, service braking and parking brake, export displacement and park cylinder and checking cylinder in gaseous tension.
But mostly the equipment of in the prior art tread brake unit being tested is the Purely mechanical testing apparatus, and major defect shows as: the test operation program is complicated; Test Operator's level professional technology is had relatively high expectations; Poor reliability, automaticity is low, the shortcoming that the test period is long.
The utility model content
To the above-mentioned defective of prior art, the utility model provides a kind of test operation simple, the tread brake single test platform that reliability height and automaticity are high.
The utility model provides a kind of tread brake single test platform, comprises mechanical part and electric control system.Mechanical part comprises: one be used for the said tread brake of clamping unit clamping frock, the force cell that is used to obtain the power output of said tread brake unit form, one be used to obtain the output displacement of said tread brake unit a displacement transducer and a horizontal bearing platform.The clamping frock is arranged on the plummer, on plummer, is disposed with one first support, one second on the horizontal direction of clamping frock one side and supports and a block; Wherein, block is close to said second and supports, and vertically plugs a banking pin on the block.Force cell form be arranged at first support and second support between, and the force cell coupling shaft of forming an end supports via first and is connected with the stretched head of tread brake unit, the coupling shaft of another opposite end extends said block via second support.Displacement transducer is arranged on the plummer, and is connected with the force cell composition.Electric control system comprises: one be used for the simulating vehicle gas circuit simulation control gas circuit and be used to control said simulation control gas circuit and drive the PC control system of said tread brake unit according to the experimental procedure action.Simulation control gas circuit is connected with checking cylinder with the cylinder of parking of tread brake unit; The PC control system is connected with simulation control gas circuit, force cell and displacement transducer.
In the utility model one embodiment, said simulation control gas circuit comprises wind regime and four air feed branch roads, and wherein two air feed branch roads are connected with checking cylinder with the cylinder of parking of tread brake unit, are used for the tread brake unit is made a service test; Two other air feed branch road also is connected with checking cylinder with the cylinder of parking of tread brake unit respectively, is used for the tread brake unit is carried out endurancing.
In the utility model one embodiment, said air feed branch road is provided with electro-pneumatic proportional valve, two-position two-way solenoid valve, two-position three way reversing solenoid valve and pressure transducer.
In the utility model one embodiment; The coupling shaft that said force cell is formed and comprised a force cell, holds the group frame of force cell and be arranged at group frame two ends respectively; The coupling shaft that wherein is connected with said stretched head is provided with detent projection, and in said coupling shaft end, with said stretched head junction be provided with square connector.
In the utility model one embodiment, support in said first support and said second, corresponding said coupling shaft is provided with through hole, and corresponding said detent projection is provided with groove on the through hole in first support.
In the utility model one embodiment, said clamping frock is provided with 3 pilot holes, is used to locate the tread brake unit.
In the utility model one embodiment, correspondence is provided with through hole on said connector and the said stretched head, is provided with the connecting pin that is used to connect connector and stretched head in the through hole.
The tread brake single test platform that the utility model provides; Simulate the work of control gas circuit simulating vehicle gas circuit through the control of PC control system, control tread brake unit moves according to test procedure, and information feedback such as the power output of being obtained, output displacement and internal gas pressure are arrived the PC control system; Calculate required parameters; Realize the robotization of process of the test and the reliability of test findings, simultaneously, improved test efficiency greatly.
Description of drawings
Fig. 1 a is the alleviation synoptic diagram commonly used of tread brake unit.
Fig. 1 b is the service braking synoptic diagram of tread brake unit.
Fig. 1 c is the parking brake synoptic diagram of tread brake unit.
Fig. 2 is the mechanical part structural drawing of the utility model tread brake single test platform one embodiment.
Fig. 3 is the schematic diagram of the simulation control gas circuit of the utility model tread brake single test platform one embodiment.
Reference numeral:
A-parks cylinder; The b-checking cylinder; A 1-parks piston;
The b1-brake piston; The big back-moving spring of a2-; The little back-moving spring of b2-;
The c-wheel; P1-parks cylinder gas; P2-checking cylinder gas;
1-tread brake unit; The 6-pressure transducer; 7-two-bit triplet reversing solenoid valve
8-2/2-way solenoid valve; The 211-pilot hole; The 10-gas-holder;
The 11-REG manual pressure regulating valve; The 5-plummer; The 13-wind regime;
The 16-tensimeter; The 17-cutout cock; The 18-electro-pneumatic proportional valve;
L1-first branch road; L2-second branch road; L3-the 3rd branch road
L4-the 4th branch road; 22-first supports; 23-second supports;
The 24-block; The 25-banking pin; The 31-force cell;
The 32-coupling shaft; 33-organizes frame; The 211-pilot hole;
The 111-stretched head; The 112-connecting pin; The 321-detent projection;
The 322-connector; 4-stay-supported displacement transducer; 21-clamping frock.
Embodiment
Further specify the technical scheme of the utility model embodiment below in conjunction with accompanying drawing and specific embodiment.
Fig. 2 is the mechanical part structural drawing of the utility model tread brake single test platform one embodiment.As shown in Figure 1, the utility model tread brake single test platform comprises mechanical part and electric control system.Mechanical part comprises: be used for the output displacement of tread brake unit 1 is formed, is used to obtain to the clamping frock 21 of the said tread brake of clamping unit, the force cell that is used to obtain the power output of said tread brake unit 1 a displacement transducer and a horizontal bearing platform 5.Clamping frock 21 is arranged on the plummer 5, and vertical with plummer 5, so that the tread brake unit 1 that is mounted thereon, guarantees that stretched head 111 levels of tread brake unit 1 are stretched out also perpendicular to plummer 5.On plummer 5, be disposed with first on the horizontal direction of clamping frock 21 1 sides and support 22, second support 23 and the block 24; Wherein, the distance that first support 22 and second is supported between 23 is bigger, and block 24 then is close to second and supports 23, and vertically plugs a banking pin 25 on the block 24.The force cell composition is arranged at first and supports between 22 and second support 23; And the coupling shaft 32 that force cell is formed an end supports 22 via first and is connected with the stretched head 111 of tread brake unit 1, and the coupling shaft 32 of another opposite end extends block 24 via second support 23.Promptly; Coupling shaft 32 is stretched out at the forward and backward two ends (it is preceding that the clamping frock belongs to a side) that force cell is formed respectively forward, backward; After the coupling shaft 32 that stretches out forward supports 22 through first; The preceding free end and the stretched head 111 of coupling shaft 32 link together, and after the coupling shaft that stretches out backward 32 supports 23 through second, arrive the position of block 24.Displacement transducer is arranged on the plummer 5, and is connected with the force cell composition.The used displacement transducer of present embodiment is a stay-supported displacement transducer 4; The stay-supported displacement transducer is arranged on the plummer 5; And being positioned at the below that force cell is formed, the input end of stay-supported displacement transducer 4 links together with the brace of connector 322 bottoms that are arranged at the force cell composition.
Electric control system comprises: one be used for the simulating vehicle gas circuit simulation control gas circuit and be used to control simulation control gas circuit and drive the PC control system of tread brake unit 1 according to the experimental procedure action.Simulation control gas circuit is connected with checking cylinder b with the cylinder a that parks of tread brake unit.The main effect of simulation control gas circuit be the simulating vehicle gas circuit to tread brake unit 1 park cylinder a and checking cylinder b air feed, make tread brake unit 1 realize using always the major function of alleviation, service braking and parking brake.Said PC control system is connected with simulation control gas circuit, force cell 31 and displacement transducer (being stay-supported displacement transducer 4 in the present embodiment), simulates the action of control gas circuit and collects Test Information with control.
When the tread brake single test platform that utilizes present embodiment is tested, assign instruction through the PC control system, simulation control gas circuit begins action, drives the motion of stretched head 111 along continuous straight runs.When stretched head 111 drive coupling shafts 32 move together backward; The back free end that moves to coupling shaft 32 touches the 25 last times of banking pin that are plugged in block 24; The back free end of coupling shaft 32 is just blocked, and can not continue to move, and the front end of coupling shaft 32 continues to move backward under the drive of stretched head 111 simultaneously again; Make force cell 31 pressurizeds of force cell in forming, thereby obtain the power output of tread brake unit 1.And when needing to measure the output displacement of tread brake unit 1; Only need pull out the banking pin 25 on the block 24; Like this; Just can not limit moving of coupling shaft 32 again, the stay-supported displacement transducer 4 that is connected on the brace of connector 322 belows just can obtain displacement information, accomplishes exporting the measurement of displacement.The PC control system calculates test parameters with power output information that obtains and output displacement information via again, i.e. decidable parameters conformance with standard whether.It is thus clear that the tread brake single test platform of the utility model is simple to operate, overcome the testing table repeated disassembled and assembled of prior art; Complicated operation and need are through the inconvenience of dial reading; Realize the robotization of test, and the error of having avoided artificial reading to cause, improved the reliability of experimental data.
The utility model one embodiment utilizes the tread brake single test platform of the utility model to make a service test simultaneously and endurancing.Please comprise the mechanical part of two tread brake single test platforms in the foregoing description in the present embodiment simultaneously with reference to Fig. 2 and Fig. 3, promptly one is used for endurancing, and another is used for performance test.In addition, simulation control gas circuit comprises wind regime 13 and four air feed branch roads, and wherein two air feed branch roads are connected with checking cylinder b with the cylinder a that parks of tread brake unit 1, are used for tread brake unit 1 is made a service test; Two other air feed branch road also is connected with checking cylinder b with the cylinder a that parks of tread brake unit 1 respectively, is used for tread brake unit 1 is carried out endurancing.Promptly; The first branch road L1 is connected with checking cylinder b with the cylinder a that parks of the tread brake unit 1 that is used for performance test with the second branch road L2 in the simulation control gas circuit, and the 3rd remaining branch road L 3 is connected with checking cylinder b with the cylinder a that parks of the tread brake unit 1 that is used for endurancing with the 4th branch road L4.Course of action is afterwards explained in above embodiment, is repeated no more at this.
In the above-described embodiments, as shown in Figure 3, the air feed branch road is provided with electro-pneumatic proportional valve 18, two-position two-way solenoid valve 8, two-position three way reversing solenoid valve 7 and pressure transducer 6.That is, on each air feed branch road (comprising the first branch road L1, the second branch road L2, the 3rd branch road L 3, the 4th branch road L4), be provided with two-bit triplet reversing solenoid valve 7, be used to provide the passage of air inlet and exhaust; 2/2-way solenoid valve 8 and pressure transducer 6 all are set, so that gas circuit pressure is tested on each air feed branch road; The first branch road L1 is to be connected with the tread brake unit 1 that is used for performance test with the second branch road L2, and electro-pneumatic proportional valve 18 is set on it, to regulate place gas circuit pressure, the pressure change procedure of simulating vehicle gas circuit; And the 3rd branch road L3 is to be connected with the tread brake unit 1 that is used for endurancing with the 4th branch road L4; Because of the pressure on the endurancing gas circuit can be steady state value; So, changed the electro-pneumatic proportional valve on it 18 into the REG manual pressure regulating valve in the present embodiment, certainly; Also can use electro-pneumatic proportional valve 18, effect is consistent.
The concrete course of work of this simulation control gas circuit is following: after assigning work order through the PC control system; At first; Wind regime 13 carries out step-down through 11 pairs of wind regimes of REG manual pressure regulating valve 13 then through being used for the cutout cock 17 of break-make control, and its force value can be read by tensimeter 16.Wind regime 13 after the pressure regulation is shunted through the four-way gas path plate and is divided into the first branch road L1, the second branch road L2, the 3rd branch road L 3 and four air feed branch roads of the 4th branch road L4.Being example to checking cylinder b air inlet through the first branch road L1; Wind regime 13 converts the wind regime of change pressure on request to through behind the electro-pneumatic proportional valve 18, handles through the voltage stabilizing of gas-holder 10 then; Arrive two-bit triplet reversing solenoid valve 7 through 2/2-way solenoid valve 8 (this moment, this valve was in on-state); The NO termination of two-bit triplet reversing solenoid valve 7 is gone into gas circuit during air inlet, make wind regime 13 can pass through this two-bit triplet reversing solenoid valve 7 after, get into checking cylinder b through tensimeter 6 again.When checking cylinder b passes through the first branch road L1 exhaust; Wind regime 13 flow to two-bit triplet reversing solenoid valve 7 by checking cylinder b, and at this moment, the NC termination of two-bit triplet reversing solenoid valve 7 is gone into gas circuit; Make wind regime 13 enter atmosphere, accomplished exhaust process through two-bit triplet reversing solenoid valve 7.The course of work of other other situation of branch road similarly, so repeat no more.
When the gaseous tension among cylinder a or the checking cylinder b is parked in the needs test, only need to break off 2/2-way solenoid valve 8, read force value by tensimeter 6 and get final product.This simulation control gas circuit has realized the simulation to the vehicle gas circuit, and can directly be controlled by the PC control system, has guaranteed the reliability of final test findings, also is an importance of the tread brake unit being carried out automatic test.
In the utility model one embodiment; As shown in Figure 2; Force cell is formed the coupling shaft 32 comprise the group frame 33 that holds force cell 31 and to be arranged at group frame 33 two ends respectively, and the coupling shaft 32 that wherein is connected with stretched head 111 is provided with detent projection 321, and in coupling shaft 32 ends, and stretched head 111 junctions be provided with square connector 322; Be that the anterior free ends of coupling shaft 32 are provided with connector 322, so that being connected of coupling shaft 32 and stretched head 111.
In the above-described embodiments, support 22, second first and support on 23 and on the block 24, corresponding coupling shaft 32 is provided with through hole, and the through hole that coupling shaft 32 can be passed forward in first support 22 makes connector 322 be connected with the stretched head 111 of front; Simultaneously, make the coupling shaft 32 of another opposite end pass second through hole that support on 23 backward, and the through hole that gets into block 24 abut on the banking pin 25, or, when taking away banking pin 25, in this through hole, move.And toothed protruding 321 is provided with groove on the through hole in first support 22, and such matching design can prevent that coupling shaft 32 from circumferential rotation taking place, thereby improve the reliability of test parameters better to coupling shaft 32 location.
In the utility model one embodiment; Clamping frock 21 is provided with 3 pilot holes 211; With when tread brake unit 1 is installed; With bolt through locate empty 211 with tread brake unit 1 on bolt hole be connected the location that can realize tread brake unit 1, make that to test installation process simple.
In the utility model one embodiment; Correspondence is provided with through hole on connector 322 and the stretched head 111; And be provided with the connecting pin that is used to connect connector 322 and stretched head 111 in those through holes; The pin ways of connecting is simple, reliable, also can not produce extra additional force to coupling shaft 32, helps test operation and obtains test output information.
What should explain at last is: above embodiment is only in order to the technical scheme of explanation the utility model, but not to its restriction; Although the utility model has been carried out detailed explanation with reference to previous embodiment; Those of ordinary skill in the art is to be understood that: it still can be made amendment to the technical scheme that aforementioned each embodiment put down in writing, and perhaps part technical characterictic wherein is equal to replacement; And these are revised or replacement, do not make the spirit and the scope of each embodiment technical scheme of essence disengaging the utility model of relevant art scheme.

Claims (7)

1. a tread brake single test platform is used to carry out the performance test and the endurancing of tread brake unit, it is characterized in that, comprising:
Mechanical part; Comprise: one be used for the said tread brake of clamping unit clamping frock, the force cell that is used to obtain the power output of said tread brake unit form, one be used to obtain the output displacement of said tread brake unit a displacement transducer and a horizontal bearing platform; Said clamping frock is arranged on the said plummer; On said plummer, be disposed with one first support, one second on the horizontal direction of said clamping frock one side and support and a block; Wherein, said block is close to said second and supports, and vertically plugs a banking pin on the said block; Said force cell composition is arranged between said first support and said second support; And the coupling shaft that said force cell is formed an end is connected with the stretched head of said tread brake unit via said first support, and the coupling shaft of another opposite end supports via said second and extends said block; Said displacement transducer is arranged on the said plummer, and is connected with said force cell composition;
Electric control system; Comprise: one be used for the simulating vehicle gas circuit simulation control gas circuit and be used to control said simulation control gas circuit and drive the PC control system of said tread brake unit according to the experimental procedure action, said simulation control gas circuit is connected with checking cylinder with the cylinder of parking of said tread brake unit; Said PC control system is connected with said simulation control gas circuit, said force cell and said displacement transducer.
2. tread brake single test platform according to claim 1; It is characterized in that; Said simulation control gas circuit comprises wind regime and four air feed branch roads; Wherein two air feed branch roads are connected with checking cylinder with the cylinder of parking of said tread brake unit, are used for said tread brake unit is made a service test; Two other air feed branch road also is connected with checking cylinder with the cylinder of parking of said tread brake unit respectively, is used for said tread brake unit is carried out endurancing.
3. tread brake single test platform according to claim 2 is characterized in that said air feed branch road is provided with electro-pneumatic proportional valve, two-position two-way solenoid valve, two-position three way reversing solenoid valve and pressure transducer.
4. tread brake single test platform according to claim 1; It is characterized in that; Said force cell is formed and is comprised a force cell, holds the group frame of said force cell and the coupling shaft that is arranged at said group of frame two ends respectively; The coupling shaft that wherein is connected with said stretched head is provided with detent projection, and in said coupling shaft end, with said stretched head junction be provided with square connector.
5. tread brake single test platform according to claim 4; It is characterized in that; On said first support, said second support and said block, corresponding said coupling shaft is provided with through hole, and corresponding said detent projection is provided with groove on the through hole in said first support.
6. tread brake single test platform according to claim 1 and 2 is characterized in that said clamping frock is provided with 3 pilot holes, is used to locate said tread brake unit.
7. tread brake single test platform according to claim 4 is characterized in that correspondence is provided with through hole on said connector and the said stretched head, is provided with the connecting pin that is used to connect said connector and said stretched head in the said through hole.
CN2011200225331U 2011-01-24 2011-01-24 Tread brake unit testing stand CN202101857U (en)

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Application Number Priority Date Filing Date Title
CN2011200225331U CN202101857U (en) 2011-01-24 2011-01-24 Tread brake unit testing stand

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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102539176A (en) * 2012-02-16 2012-07-04 永济电机天作电气有限责任公司 Single-train test platform of motor train unit
CN105738133A (en) * 2016-05-04 2016-07-06 中国铁道科学研究院 Rail vehicle multifunctional braking power testing platform
CN106198060A (en) * 2016-06-23 2016-12-07 太原鹏跃电子科技有限公司 A kind of unit braking cylinder test platform
CN107063662A (en) * 2017-04-17 2017-08-18 青岛思锐科技有限公司 Tread units brake pilot system
CN107976310A (en) * 2017-11-21 2018-05-01 中车株洲电力机车有限公司 A kind of brake test tool
CN108931342A (en) * 2017-05-25 2018-12-04 宝山钢铁股份有限公司 Bogie Multifunctional branching air pressure detection tool
CN109799100A (en) * 2019-03-15 2019-05-24 西南交通大学 A kind of modularization comprehensive braking performance test testing stand
CN110441070A (en) * 2019-08-13 2019-11-12 中车青岛四方车辆研究所有限公司 Brake head cross sliding type tread foundation brake gear fatigue test system
CN111824108A (en) * 2020-08-12 2020-10-27 厦门金龙联合汽车工业有限公司 Floor type brake master cylinder performance test device and method

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102539176A (en) * 2012-02-16 2012-07-04 永济电机天作电气有限责任公司 Single-train test platform of motor train unit
CN105738133A (en) * 2016-05-04 2016-07-06 中国铁道科学研究院 Rail vehicle multifunctional braking power testing platform
CN106198060A (en) * 2016-06-23 2016-12-07 太原鹏跃电子科技有限公司 A kind of unit braking cylinder test platform
CN107063662A (en) * 2017-04-17 2017-08-18 青岛思锐科技有限公司 Tread units brake pilot system
CN108931342A (en) * 2017-05-25 2018-12-04 宝山钢铁股份有限公司 Bogie Multifunctional branching air pressure detection tool
CN107976310A (en) * 2017-11-21 2018-05-01 中车株洲电力机车有限公司 A kind of brake test tool
CN107976310B (en) * 2017-11-21 2021-02-05 中车株洲电力机车有限公司 Brake test tool
CN109799100A (en) * 2019-03-15 2019-05-24 西南交通大学 A kind of modularization comprehensive braking performance test testing stand
CN109799100B (en) * 2019-03-15 2021-03-19 西南交通大学 Modularized comprehensive brake performance test bench
CN110441070A (en) * 2019-08-13 2019-11-12 中车青岛四方车辆研究所有限公司 Brake head cross sliding type tread foundation brake gear fatigue test system
CN110441070B (en) * 2019-08-13 2020-12-22 中车青岛四方车辆研究所有限公司 Fatigue test system for brake shoe support cross sliding type tread foundation brake device
CN111824108A (en) * 2020-08-12 2020-10-27 厦门金龙联合汽车工业有限公司 Floor type brake master cylinder performance test device and method

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C14 Grant of patent or utility model
TR01 Transfer of patent right

Effective date of registration: 20141011

Address after: 100844 Fuxing Road, Beijing, Haidian District, No. 10

Patentee after: CHINA RAILWAY CORPORATION

Patentee after: Nanjing Puzhen Haitai Brake Equipment Co., Ltd.

Address before: 100844 Fuxing Road, Beijing, Haidian District, No. 10

Patentee before: Transport Bureau of Railway Department

Patentee before: Nanjing Puzhen Haitai Brake Equipment Co., Ltd.

Effective date of registration: 20141011

Address after: 100844 Fuxing Road, Beijing, Haidian District, No. 10

Patentee after: CHINA RAILWAY CORPORATION

Patentee after: Nanjing Puzhen Haitai Brake Equipment Co., Ltd.

Address before: 100844 Fuxing Road, Beijing, Haidian District, No. 10

Patentee before: Transport Bureau of Railway Department

Patentee before: Nanjing Puzhen Haitai Brake Equipment Co., Ltd.

ASS Succession or assignment of patent right

Owner name: CHINA RAILWAY CORPORATION

Free format text: FORMER OWNER: TRANSPORT BUREAU OF RAILWAY DEPARTMENT

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Address after: 100844 Fuxing Road, Beijing, Haidian District, No. 10

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Patentee after: Nanjing Zhongche town Haitai Brake Equipment Co Ltd

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