CN103335040B - A kind of unit brake cylinder for railway vehicle - Google Patents
A kind of unit brake cylinder for railway vehicle Download PDFInfo
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- CN103335040B CN103335040B CN201310299368.8A CN201310299368A CN103335040B CN 103335040 B CN103335040 B CN 103335040B CN 201310299368 A CN201310299368 A CN 201310299368A CN 103335040 B CN103335040 B CN 103335040B
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Abstract
The invention discloses a kind of unit brake cylinder for railway vehicle, the adjusting nut comprising cylinder body and be arranged in cylinder body and piston assembly, described piston assembly will be divided into front and back two-part of relative insulation in cylinder body, described cylinder body is provided with the base be communicated with rear section in cylinder body, described adjusting nut one end to be placed in cylinder body and to be connected with piston assembly by brake slack adjuster, its the other end is placed in outside cylinder body, in described cylinder body, on adjusting nut, cover has release spring, described release spring one end is resisted against piston assembly end face, its the other end is resisted against limited step end face in cylinder body.The present invention arranges brake slack adjuster in master cylinder, improve transmission efficiency, and pass through the adjustment function of brake slack adjuster, no matter the gap of brake shoe and wheel is bigger than normal or less than normal, can according to the normal clearance automatic regulation unit cylinder piston stroke of setting, the gap of brake shoe and wheel is kept normally, thus ensures the braking force of vehicle.
Description
Technical field
The present invention relates to a kind of unit brake cylinder for railway vehicle.
Background technique
In rail truck, unit brake cylinder is arranged on vehicle bottom, and the brake signal being responsible for distributing valve to transmit passes to truck brake rigging device, and wheel pushed down by the final brake shoe that drives, and makes vehicle realize braking action.When car brakeing, the pressurized air from distributing valve enters unit brake cylinder cylinder body, under the seal action of rubber cup, promotes piston composition compression release spring, until brake shoe contacts with wheel, and applies braking force to wheel, realize braking action; When vehicle is alleviated, under release spring effect, promote piston composition and move right, the pressurized air in cylinder body is discharged by unit brake cylinder right side exhaust mouth, makes vehicle realize mitigation.
But, in actual use, due to the problem that installation precision or brake shoe are in use worn, make the gap between brake shoe and wheel there will be situation bigger than normal or less than normal, thus affect the braking force of unit brake cylinder.
Summary of the invention
The object of the invention is to: for above-mentioned Problems existing, providing a kind of can, according to the normal clearance automatic regulation unit cylinder piston stroke of setting, make the gap of brake shoe and wheel keep normally, thus ensures the unit brake cylinder for railway vehicle of vehicle braking force.
Technological scheme of the present invention is achieved in that a kind of unit brake cylinder for railway vehicle, it is characterized in that: comprise cylinder body and the adjusting nut that is arranged in cylinder body and piston assembly, described piston assembly will be divided into front and back two-part of relative insulation in cylinder body, described cylinder body is provided with the base be communicated with rear section in cylinder body, described adjusting nut one end to be placed in cylinder body and to be connected with piston assembly by brake slack adjuster, its the other end is placed in outside cylinder body, in described cylinder body, on adjusting nut, cover has release spring, described release spring one end is resisted against piston assembly end face, its the other end is resisted against limited step end face in cylinder body.
Unit brake cylinder for railway vehicle of the present invention, piston assembly described in it comprises piston and is arranged on the leather cup in piston rear end face, and described piston is connected with inboard wall of cylinder block by piston holder, and described leather cup periphery and inboard wall of cylinder block fit tightly.
Unit brake cylinder for railway vehicle of the present invention, brake slack adjuster described in it comprises and being socketed in adjusting nut and the adjustment screw rod be threaded with adjusting nut, the adjustment screw head of described adjustment screw rod one end is connected with the clutch assembly be fixed on piston, described adjustment screw rod is connected with bearing cup by rolling bearing, adjusting play is left between described bearing cup and the clutch assembly being fixed on piston, in described adjusting nut periphery, cover has pillar, described pillar one end is placed in cylinder body, its the other end is placed in outside cylinder body, described pillar and cylinder body compress and are integrated, the end that described pillar is placed in cylinder body is provided with the limited ring corresponding with bearing cup, running length when distance between described bearing cup and limited ring is brake clearance normal brake application, described adjusting nut overlaps have adjustment spring and adjust spring and be in compressive state all the time, described adjustment spring one end is resisted against on the limited step of adjusting nut, its the other end is resisted against the step end face of the adjustment spring seat be arranged on adjustment screw rod, described adjustment spring seat is resisted against clutch assembly end face through bearing cup, holddown spring is provided with between described bearing cup and piston.
Unit brake cylinder for railway vehicle of the present invention, clutch assembly described in it is made up of the front clutch be separately fixed on piston and rear clutch, the adjustment screw head of described adjustment screw rod is placed between front clutch and rear clutch, the tooth that can be meshed with the tooth on front clutch and rear clutch end face is respectively arranged with in described adjustment screw head both ends of the surface, when master cylinder relieved state, described adjustment screw head engage with front clutch and with rear clutch separation; And when master cylinder braking state, described adjustment screw head is separated with front clutch and engages with rear clutch.
Unit brake cylinder for railway vehicle of the present invention, it has adjustment spring bushing at described adjusting nut periphery cover, described adjusting nut can move in the axial direction relative to adjustment spring bushing, described adjustment spring bushing connects as one with adjustment spring seat, and described adjustment spring housing is on adjustment spring bushing.
Unit brake cylinder for railway vehicle of the present invention, it overlaps limited location spring on described pillar, and described limit spring one end is resisted against the limited step end face in cylinder body, and its other end is resisted against limited ring end face.
Unit brake cylinder for railway vehicle of the present invention, it overlaps in described adjustment spring periphery, between adjustment spring and pillar adjustment sleeve, described adjustment sleeve front portion is connected with adjusting nut front threads, and described adjustment sleeve can move in the axial direction relative to pillar.
Unit brake cylinder for railway vehicle of the present invention, the end be placed in outside cylinder body of pillar described in it is provided with pillar head, and described pillar headgear, in adjustment sleeve periphery, is provided with wiper ring between described pillar head and adjustment sleeve.
Unit brake cylinder for railway vehicle of the present invention, it is provided with instruction mark post vertically on described piston, the indicating arm cover that described instruction mark post passes cylinder body successively and is arranged on cylinder body, on described instruction mark post, cover has stroke to indicate spring, described stroke instruction spring one end is resisted against indicating arm cover end face, and the other end is resisted against the position limit cycle end face on instruction mark post.
Unit brake cylinder for railway vehicle of the present invention, it is provided with the hand brake lever cover be connected with hand brake device vertically on described piston, described cylinder body is provided with and overlaps corresponding opening with hand brake lever, described opening is provided with dust-proof cover.
The present invention arranges brake slack adjuster in master cylinder, eliminate the existing intermediate transmission leverage be arranged at the bottom of car, improve transmission efficiency, alleviate the quality of brake rigging, and by the adjustment function of brake slack adjuster, no matter brake shoe is bigger than normal or less than normal with the gap of wheel, can according to the normal clearance automatic regulation unit cylinder piston stroke set, the gap of brake shoe and wheel is kept normally, thus ensures the braking force of vehicle.
Accompanying drawing explanation
Fig. 1 is the relieved state structural representation of the present invention when brake clearance is normal.
Fig. 2 is A portion enlarged view in Fig. 1.
Fig. 3 is B portion enlarged view in Fig. 1.
Fig. 4 is application position figure when brake clearance is normal in the present invention.
Fig. 5 is application position figure when brake clearance increases in the present invention.
Fig. 6 is release position figure when brake clearance increases in the present invention.
Mark in figure: 1 is cylinder body, 2 is adjusting nut, 3 is piston, 4 is base, 5 is release spring, 6 is adjustment screw rod, 7 is adjustment screw head, 8 is rolling bearing, 9 is bearing cup, 10 is adjusting play, 11 is pillar, 12 is limited ring, 13 is adjustment spring, 14 is adjustment spring seat, 15 is holddown spring, 16a is front clutch, 16b is rear clutch, 17 is adjustment spring bushing, 18 is limit spring, 19 is adjustment sleeve, 20 is pillar head, 21 is wiper ring, 22 is instruction mark post, 23 is indicating arm cover, 24 is stroke instruction spring, 25 is position limit cycle, 26 is piston holder, 27 is hand brake lever cover, 28 is dust-proof cover, 29 is leather cup.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in detail.
In order to make object of the present invention, technological scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
As shown in figures 1 to 6, a kind of unit brake cylinder for railway vehicle, the adjusting nut 2 comprising cylinder body 1 and be arranged in cylinder body 1 and piston assembly, described cylinder body 1 is formed by connecting by front and back two-part, described piston assembly will be divided into front and back two-part of relative insulation in cylinder body 1, described piston assembly comprises piston 3 and is arranged on the leather cup 29 of piston 3 ear end face, and described piston 3 is connected with cylinder body 1 inwall by piston holder 30, and described leather cup 29 periphery and cylinder body 1 inwall fit tightly; Described cylinder body 1 is provided with the base 4 be communicated with rear section in cylinder body 1, described adjusting nut 2 one end to be placed in cylinder body 1 and to be connected with piston assembly by brake slack adjuster, its the other end is placed in outside cylinder body 1, in described cylinder body 1, on adjusting nut 2, cover has release spring 5, described release spring 5 one end is resisted against piston assembly end face, and its other end is resisted against limited step end face in cylinder body 1.
Wherein, described brake slack adjuster comprises and being socketed in adjusting nut 2 and the adjustment screw rod 6 be threaded with adjusting nut 2, the adjustment screw head 7 of described adjustment screw rod 6 one end is connected with the clutch assembly be fixed on piston 3, described adjustment screw rod 6 is connected with bearing cup 9 by rolling bearing 8, adjusting play 10 is left between described bearing cup 9 and the clutch assembly being fixed on piston 3, holddown spring 15 is provided with between described bearing cup 9 and piston 3, in described adjusting nut 2 periphery, cover has pillar 11, described pillar 11 one end is placed in cylinder body 1, its the other end is placed in outside cylinder body 1, described pillar 11 compresses with cylinder body 1 and is integrated, described pillar 11 end be placed in cylinder body 1 is provided with the limited ring 12 corresponding with bearing cup 9, described pillar 11 overlaps limited location spring 18, described limit spring 18 one end is resisted against the limited step end face in cylinder body 1, its the other end is resisted against limited ring 12 end face, running length when distance between described bearing cup 9 and limited ring 12 is brake clearance normal brake application, i.e. command range A, in described adjusting nut 2 periphery, cover has adjustment spring bushing 17, described adjusting nut 2 can move in the axial direction relative to adjustment spring bushing 17, described adjustment spring bushing 17 overlaps have adjustment spring 13 and adjust spring 13 and be in compressive state all the time, described adjustment spring 13 one end is resisted against on the limited step of adjusting nut 2, its the other end is resisted against the step end face of the adjustment spring seat 14 be arranged on adjustment screw rod 6, described adjustment spring bushing 17 connects as one with adjustment spring seat 14, described adjustment spring seat 14 is resisted against clutch assembly end face through bearing cup 9, overlap to have in described adjustment spring 13 periphery, between adjustment spring 13 and pillar 11 and adjust sleeve 19, described adjustment sleeve 19 front portion is connected with adjusting nut 2 front threads, described adjustment sleeve 19 can move in the axial direction relative to pillar 11, described pillar 11 end be placed in outside cylinder body 1 is provided with pillar head 20, described pillar head 20 is enclosed within adjustment sleeve 19 periphery, between described pillar head 20 and adjustment sleeve 19, be provided with wiper ring 21.
Described clutch assembly is made up of the front clutch 16a be separately fixed on piston 3 and rear clutch 16b, the adjustment screw head 7 of described adjustment screw rod 6 is placed between front clutch 16a and rear clutch 16b, the tooth that can be meshed with the tooth on front clutch 16a and rear clutch 16b end face is respectively arranged with in described adjustment screw head 7 both ends of the surface, when master cylinder relieved state, described adjustment screw head 7 engages with front clutch 16a and is separated with rear clutch 16b; And when master cylinder braking state, described adjustment screw head 7 is separated with front clutch 16a and engages with rear clutch 16b.
Wherein, described piston 3 is provided with instruction mark post 22 vertically, described instruction mark post 22 overlaps 23 through cylinder body 1 and the indicating arm be arranged on cylinder body 1 successively, on described instruction mark post 22, cover has stroke to indicate spring 24, described stroke instruction spring 24 one end is resisted against indicating arm and overlaps 23 end faces, and the other end is resisted against position limit cycle 25 end face on instruction mark post 22.According to the state of stretching out (color instruction) of instruction mark post, station inspector can judge that whether piston travel is at zone of reasonableness easily, thus judge the abrasion state of brake shoe.
Described piston 3 is provided with hand brake lever vertically that be connected with hand brake device and overlaps 27, described cylinder body 1 is provided with and overlaps 27 corresponding openings with hand brake lever, described opening is provided with dust-proof cover 28.Hand brake lever cover can as required, and be conveniently connected with the hand brake device of different multiplying, using scope is wide.
Working principle of the present invention:
As shown in Figure 1, be the present invention release position figure when brake clearance is normal, i.e. home position figure during entrucking, now, adjustment screw head engage with front clutch and with rear clutch separation, unit brake cylinder length is L.
As shown in Figure 4, when brake shoe and wheel clearance normal brake application, the base of pressurized air on cylinder body from distributing valve enters on the right side of cup leather, pressurized air promotes whole piston assembly and moves along the direction of compression release spring, this can make adjusting nut channel floor move forward, until bearing cup contacts with limited ring, piston assembly continues to be moved to the left, adjusting play reduces, adjustment screw head is separated with front clutch and engages with rear clutch, now brake shoe just in time should touch wheel, and applies braking force to wheel.The distance that adjusting nut drives adjustment sleeve to stretch out pillar head is command range A, and brake slack adjuster does not adjust, and now, unit brake cylinder overall length is L+A; After alleviating, whole piston assembly is retracted, and namely return to position in Fig. 1, unit brake cylinder overall length is still L.
As shown in Figure 5, when brake shoe and wheel wear, namely when brake shoe and wheel clearance increase, during braking, adjusting nut displacement distance can be greater than command range A.When bearing cup contacts with limited ring, piston assembly continues to move forward under pressure air effect, due to the restriction of limited ring and the existence of adjusting play, therefore holddown spring is compressed, piston continues to move forward, simultaneously, the front clutch be fixed on piston also moves forward with piston, adjusting play reduces, now, because adjustment screw rod is connected with bearing cup by rolling bearing, therefore adjustment screw rod can not move forward after bearing cup contacts with limited ring, therefore, adjustment screw head and the front clutch of adjustment screw rod depart from (because brake shoe does not also touch wheel, now adjust screw head to be neither meshed with front clutch, also be not meshed with rear clutch), under the tension force effect of adjustment spring, adjustment screw rod rotates motion but does not produce movement in the axial direction, thus make and adjust the adjusting nut that screw flight is connected and extend left, until brake shoe touches wheel and after applying normal brake application power, adjustment screw head engages with rear clutch, adjustment screw rod stops operating, adjusting nut also stops extending, now, adjusting nut stretches out corresponding adjustment distance D along adjustment screw axial.The distance that adjusting nut drives adjustment sleeve to stretch out pillar head is A+D, and now, unit brake cylinder overall length is L+A+D; After alleviating, whole piston assembly is retracted, and namely returns to position in Fig. 6, adjustment screw head engage with front clutch and with rear clutch separation, unit brake cylinder overall length becomes L+D.
When changing brake shoe or want to shorten unit brake cylinder, on the left of unit brake cylinder, (adjusting nut end) applies active force, and adjustment screw head and front clutch are thrown off, the spring of compression adjustment simultaneously, the position of adjusting nut on screw rod is moved right, and unit brake cylinder overall length L shortens.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (8)
1. a unit brake cylinder for railway vehicle, it is characterized in that: comprise cylinder body (1) and the adjusting nut (2) that is arranged in cylinder body (1) and piston assembly, described piston assembly will be divided into front and back two-part of relative insulation in cylinder body (1), described cylinder body (1) is provided with the base (4) be communicated with rear section in cylinder body (1), described adjusting nut (2) one end to be placed in cylinder body (1) and to be connected with piston assembly by brake slack adjuster, its the other end is placed in cylinder body (1) outward, in described cylinder body (1), the upper cover of adjusting nut (2) has release spring (5), described release spring (5) one end is resisted against piston assembly end face, its the other end is resisted against the interior limited step end face of cylinder body (1), described piston assembly comprises piston (3) and is arranged on the leather cup (29) of piston (3) ear end face, and described piston (3) is connected with cylinder body (1) inwall by piston holder (26), and described leather cup (29) periphery and cylinder body (1) inwall fit tightly, described brake slack adjuster comprises and being socketed in adjusting nut (2) and the adjustment screw rod (6) be threaded with adjusting nut (2), the adjustment screw head (7) of described adjustment screw rod (6) one end is connected with the clutch assembly be fixed on piston (3), described adjustment screw rod (6) is connected with bearing cup (9) by rolling bearing (8), adjusting play (10) is left between described bearing cup (9) and the clutch assembly being fixed on piston (3), in described adjusting nut (2) periphery, cover has pillar (11), described pillar (11) one end is placed in cylinder body (1), its the other end is placed in cylinder body (1) outward, described pillar (11) and cylinder body (1) compress and are integrated, described pillar (11) end be placed in cylinder body (1) is provided with the limited ring (12) corresponding with bearing cup (9), running length when distance between described bearing cup (9) and limited ring (12) is brake clearance normal brake application, there is adjustment spring (13) at the upper cover of described adjusting nut (2) and adjust spring (13) and be in compressive state all the time, described adjustment spring (13) one end is resisted against on the limited step of adjusting nut (2), its the other end is resisted against the step end face of the adjustment spring seat (14) be arranged in adjustment screw rod (6), described adjustment spring seat (14) is resisted against clutch assembly end face through bearing cup (9), holddown spring (15) is provided with between described bearing cup (9) and piston (3).
2. unit brake cylinder for railway vehicle according to claim 1, it is characterized in that: described clutch assembly is made up of the front clutch (16a) be separately fixed on piston (3) and rear clutch (16b), the adjustment screw head (7) of described adjustment screw rod (6) is placed between front clutch (16a) and rear clutch (16b), the tooth that can be meshed with the tooth on front clutch (16a) and rear clutch (16b) end face is respectively arranged with in described adjustment screw head (7) both ends of the surface, when master cylinder relieved state, described adjustment screw head (7) is engaged with front clutch (16a) and is separated with rear clutch (16b), and when master cylinder braking state, described adjustment screw head (7) is separated with front clutch (16a) and engages with rear clutch (16b).
3. unit brake cylinder for railway vehicle according to claim 1, it is characterized in that: in described adjusting nut (2) periphery, cover has adjustment spring bushing (17), described adjusting nut (2) can move in the axial direction relative to adjustment spring bushing (17), described adjustment spring bushing (17) connects as one with adjustment spring seat (14), and described adjustment spring (13) is enclosed within adjustment spring bushing (17).
4. unit brake cylinder for railway vehicle according to claim 1, it is characterized in that: at described pillar (11) upper cover limited location spring (18), described limit spring (18) one end is resisted against the limited step end face in cylinder body (1), and its other end is resisted against limited ring (12) end face.
5. unit brake cylinder for railway vehicle according to claim 1, it is characterized in that: overlapping in described adjustment spring (13) periphery, between adjustment spring (13) and pillar (11) has adjustment sleeve (19), described adjustment sleeve (19) front portion is connected with adjusting nut (2) front threads, and described adjustment sleeve (19) can be moved in the axial direction relative to pillar (11).
6. unit brake cylinder for railway vehicle according to claim 5, it is characterized in that: described pillar (11) is placed in cylinder body (1) end outward and is provided with pillar head (20), described pillar head (20) is enclosed within adjustment sleeve (19) periphery, between described pillar head (20) and adjustment sleeve (19), be provided with wiper ring (21).
7. unit brake cylinder for railway vehicle as claimed in any of claims 1 to 6, it is characterized in that: on described piston (3), be provided with instruction mark post (22) vertically, the indicating arm cover (23) that described instruction mark post (22) is passed cylinder body (1) successively and is arranged on cylinder body (1), stroke is had to indicate spring (24) at the upper cover of described instruction mark post (22), described stroke instruction spring (24) one end is resisted against indicating arm cover (23) end face, and the other end is resisted against position limit cycle (25) end face in instruction mark post (22).
8. unit brake cylinder for railway vehicle according to claim 7, it is characterized in that: on described piston (3), be provided with the hand brake lever cover (27) be connected with hand brake device vertically, described cylinder body (1) is provided with the opening corresponding with hand brake lever cover (27), described opening is provided with dust-proof cover (28).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310299368.8A CN103335040B (en) | 2013-07-17 | 2013-07-17 | A kind of unit brake cylinder for railway vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310299368.8A CN103335040B (en) | 2013-07-17 | 2013-07-17 | A kind of unit brake cylinder for railway vehicle |
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| Publication Number | Publication Date |
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| CN103335040A CN103335040A (en) | 2013-10-02 |
| CN103335040B true CN103335040B (en) | 2015-09-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310299368.8A Active CN103335040B (en) | 2013-07-17 | 2013-07-17 | A kind of unit brake cylinder for railway vehicle |
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| CN (1) | CN103335040B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104100664B (en) * | 2014-07-03 | 2017-04-12 | 贵州新安航空机械有限责任公司 | Spring resetting device |
| CN105351405B (en) * | 2015-11-20 | 2017-09-22 | 常州中车铁马科技实业有限公司 | Brake clamp oil cylinder |
| CN106195075A (en) * | 2016-08-29 | 2016-12-07 | 中车戚墅堰机车车辆工艺研究所有限公司 | A kind of checking cylinder clearance adjustment mechanism |
| CN108545426B (en) * | 2018-06-04 | 2024-01-16 | 中国矿业大学 | Distributed braking device of downward belt conveyor and automatic control method |
| AU2020289774B2 (en) * | 2020-08-25 | 2022-07-21 | Meishan Crrc Brake Science & Technology Co., Ltd. | Unit brake cylinder and integrated brake device |
| CN112879474B (en) * | 2021-01-04 | 2022-08-16 | 中车青岛四方车辆研究所有限公司 | Pneumatic brake cylinder and brake caliper unit |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0165641A1 (en) * | 1984-06-22 | 1985-12-27 | SAB NIFE AB (reg. no. 556010-0058) | A brake cylinder apparatus with a slack adjuster mechanism especially for railroad vehicles |
| US4942945A (en) * | 1987-08-27 | 1990-07-24 | Bergische Stahl-Industrie | Brake cylinder |
| CN2559526Y (en) * | 2002-06-21 | 2003-07-09 | 株洲电力机车厂 | Braking unit of disk-shape braker for railway rolling stock |
| CN102352902A (en) * | 2011-08-31 | 2012-02-15 | 南车长江车辆有限公司 | Automatically adjustable stroke type brake cylinder of railway vehicle |
| CN203374708U (en) * | 2013-07-17 | 2014-01-01 | 四川制动科技股份有限公司 | Unit brake cylinder for railway vehicle |
-
2013
- 2013-07-17 CN CN201310299368.8A patent/CN103335040B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0165641A1 (en) * | 1984-06-22 | 1985-12-27 | SAB NIFE AB (reg. no. 556010-0058) | A brake cylinder apparatus with a slack adjuster mechanism especially for railroad vehicles |
| US4942945A (en) * | 1987-08-27 | 1990-07-24 | Bergische Stahl-Industrie | Brake cylinder |
| CN2559526Y (en) * | 2002-06-21 | 2003-07-09 | 株洲电力机车厂 | Braking unit of disk-shape braker for railway rolling stock |
| CN102352902A (en) * | 2011-08-31 | 2012-02-15 | 南车长江车辆有限公司 | Automatically adjustable stroke type brake cylinder of railway vehicle |
| CN203374708U (en) * | 2013-07-17 | 2014-01-01 | 四川制动科技股份有限公司 | Unit brake cylinder for railway vehicle |
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| CN103335040A (en) | 2013-10-02 |
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Address after: Three road 620010 Meishan province Sichuan City Dongpo District of Meishan science and Technology Industrial Park No. 68 Patentee after: Meisha Zhongke Brake Technology Co., Ltd. Address before: Three road 620010 Meishan province Sichuan City Dongpo District of Meishan science and Technology Industrial Park No. 68 Patentee before: Sichuan Brake Science and Technology Co. Ltd. |