CN109838482A - Rail traffic vehicles parking brake device and its hand relieving method - Google Patents
Rail traffic vehicles parking brake device and its hand relieving method Download PDFInfo
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- CN109838482A CN109838482A CN201711193091.5A CN201711193091A CN109838482A CN 109838482 A CN109838482 A CN 109838482A CN 201711193091 A CN201711193091 A CN 201711193091A CN 109838482 A CN109838482 A CN 109838482A
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- 238000004519 manufacturing process Methods 0.000 abstract description 2
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Abstract
A kind of rail traffic vehicles parking brake device, including cylinder body, park piston, brake bar, cylinder cap, park spring, the center for parking piston is equipped with position-limiting cover protruding upward, the middle part of brake bar is equipped with spline body, the top of position-limiting cover is equipped with spline, the dynamic cooperation of the spline body and position-limiting cover of brake bar, the upper end of brake bar is extended in the second cavity by spline, and the upper end is fixed with guide bracket, the outside of position-limiting cover is cased with brake-rod spring, brake bar has the make the spline of its spline body and position-limiting cover misplace first rotation position and makes the spline of its spline body and position-limiting cover consistent second rotation position；Cylinder cap is equipped with turntable, turntable spring and brake bar first rotate corresponding first block piece in position, position is rotated with brake bar second corresponding second stopper, and turntable is connect with guide bracket, poke rod of the turntable with radial direction.The present invention is able to achieve pneumatic alleviation, parking brake and hand relieving, and part is few, and simple and compact for structure, light-weight, manufacturing cost is low, facilitates realization engineering application.
Description
Technical field
The present invention relates to rail traffic vehicles parking brake device and its hand relieving methods.
Background technique
Parking brake device is mainly used for the demand of parking under rail traffic vehicles calm condition and (stops in such as night garage
Vehicle, fault car route are parked).Parking brake device mostly uses high pressure spring to carry out accumulation of energy.When not needing parking brake, give
Parking Brake Cylinders are filled with compressed gas, overcome spring force, store energy；When needing parking brake, it is discharged in Parking Brake Cylinders
Compressed air, energy-storaging spring release energy, to apply parking brake.Parking brake device has according to different operating demand
Parking brake, inflation alleviation, hand relieving function.Parking brake and inflation, which are alleviated, to be realized using compressed air: when discharge is pressed
Apply parking brake when contracting air；Realize that the inflation of parking brake is alleviated when being filled with compressed air.To make vehicle can be in nothing
Dragged under the conditions of wind, parking brake device can also be by pulling hand relieving mechanism to realize hand relieving.
United States Patent (USP) US2003154854A1 discloses a kind of spring brake cylinder and a kind of emergency release device, is a kind of allusion quotation
The parking brake device of type completes work in every by screw thread rotation complex assemblies etc., and the parking brake device is stable, can
By property height, but structure is especially complex, and components are more, and requirement on machining accuracy is high, and assembly and disassembly maintenance is relatively complicated.
Parking brake device structure and United States Patent (USP) involved in Chinese patent CN202272010U and CN102795240A
Technical solution in US2003154854A1 is close, equally exists that structure is excessively complicated, and part is various, processing and group reload request compared with
The problems such as high.
A kind of novel parking brake device is disclosed in Chinese patent literature CN102756722A, passes through steel ball and wedge
Parking brake and inflation relaxation effect are realized in the cooperation of shape pin, are deflected by pull rod band moving axis and pushing block and are realized parking brake
Hand relieving.It is extremely limited that pushing block by space is limited catenary motion amount, and is difficult to move and passes to wedge pin well.Work
Cheng Yunyong realization has certain difficulty.
Summary of the invention
It is an object of the present invention to propose that a kind of structure is simple, facilitate the rail traffic vehicles of engineering application with parking
Brake apparatus.The second object of the present invention is to propose a kind of hand relieving side of rail traffic vehicles parking brake device
Method.
One of in order to achieve the above objectives, the present invention adopts the following technical scheme that: the present invention includes cylinder body, parks piston, system
Lever and cylinder cap park piston and cylinder chamber are divided into the first cavity of lower section and the second cavity of top, be equipped in the second cavity
Park spring, the upper end and cylinder cap for parking spring offset, and lower end offsets with piston is parked, the center for parking piston be equipped with to
The position-limiting cover protruded above, the middle part of the brake bar are equipped with spline body, and the top of position-limiting cover is equipped with the spline body with brake bar
The upper end of the spline matched, brake bar is extended in the second cavity by spline, and the upper end is fixed with guide bracket, position-limiting cover it is outer
Portion is cased with brake-rod spring, and one end of brake-rod spring and the guide bracket of brake bar offset, and the other end offsets with piston is parked；Braking
Bar has the make the spline of its spline body and position-limiting cover misplace first rotation position and makes the spline of its spline body and position-limiting cover
Consistent second rotation position；Cylinder cap is equipped with turntable, turntable spring, corresponding first block piece in position is rotated with brake bar first and
Brake bar second rotates the corresponding second stopper in position, and turntable connect with guide bracket and can move to axial between the two, turntable tool
There is radial poke rod；The poke rod of turntable supports and the first block piece, then brake bar is in the first rotation position, at this time to cylinder body first
Cavity inflation, parks piston and the equal uplink of brake bar, realizes that inflation is alleviated；When cylinder exhaust makes to park piston downlink, piston limit
The inner roof wall of position cover is contacted with the top surface of brake bar spline body, parks piston band brake bar downlink, realizes braking；Turntable is stirred
Bar supports and second stopper, i.e., brake bar is in the second rotation position, and the top of brake bar spline body can be pierced by the spline of position-limiting cover,
Brake bar uplink under brake-rod spring effect, realizes hand relieving.
In inflation relieved state, tool is in gap between the inner roof wall of piston limit cover and the top surface of brake bar spline body.
The outer diameter of the guide bracket of the brake bar is greater than the outer diameter for parking the position-limiting cover of piston.
The number of teeth of the spline body of the brake bar is at least 4.
The turntable covers on guide bracket, and guide bracket is equipped with feather key, and turntable is equipped with axially directed slot, feather key and guiding
The dynamic cooperation of slot.
The turntable spring one end is connected on poke rod, and the other end is connected on cylinder cap.
The drag-line for hand relieving is additionally provided on the cylinder cap, the bottom end of drag-line is connected with impeller, by pushing away for drag-line
Moving part drives poke rod to swing.
Hand relieving spring is cased on the drag-line, one end of hand relieving spring is connected on cylinder cap, other end connection
On impeller.
In order to achieve the above objectives two, the present invention proposes the hand relieving of following rail traffic vehicles parking brake device
Method: drag-line is pulled, impeller promotion poke rod supports and second stopper, brake bar turn to the second rotation position with turntable, flower
Key body is consistent with the spline of position-limiting cover, parks piston and moves to lowest order under the action of parking spring, while brake bar exists
Highest order is moved up under the action of brake-rod spring, the top of spline body is pierced by the spline of position-limiting cover, makes former stretching cylinder
The brake bar of body enters cylinder body, completes hand relieving.
Drag-line is opened, impeller resets under the action of hand relieving spring, then inflates, parks to the first cavity of cylinder body
Piston rises, and the spline of its position-limiting cover is made to be detached from the spline body of brake bar, under the action of turntable spring, driven by rotary disc braking
Bar returns back to the first rotation position, is restored to inflation relieved state at this time.
In inflation relieved state, tool is in gap between the inner roof wall of piston limit cover and the top surface of brake bar spline body.
The present invention has following good effect: the present invention is by parking between the position-limiting cover of piston and the spline body of brake bar
Change in location and cooperate different motion states, realize parking brake, pneumatic alleviate and hand relieving, parking brake and alleviation
Movement is simple, easy to operate；Part of the invention is few, simple and compact for structure, light-weight, and manufacturing cost is low, facilitates realization engineering
With, and reliability with higher and durability.
Detailed description of the invention
Fig. 1 is the status diagram after parking brake device inflation is alleviated.
Fig. 2 is the top view of Fig. 1.
Fig. 3 is status diagram of the parking brake device in parking brake.
Fig. 4 is the top view of Fig. 3.
Fig. 5 is status diagram of the parking brake device in hand relieving.
Fig. 6 is the top view of Fig. 5.
Fig. 7 is status diagram of the parking brake device after hand relieving.
Fig. 8 is the top view of Fig. 7.
Fig. 9 is the stereoscopic schematic diagram that piston is parked in embodiment 1.
Figure 10 is the full sectional view that piston is parked in embodiment 1.
Figure 11 is the stereoscopic schematic diagram of brake bar in embodiment 1.
Figure 12 is to park the location diagram of piston and brake bar after inflation is alleviated.
Figure 13 is to park the location diagram of piston and brake bar in parking brake.
Figure 14 is to park the location diagram of piston and brake bar in hand relieving.
Figure 15 is the stereoscopic schematic diagram that piston is parked in embodiment 2.
Figure 16 is the stereoscopic schematic diagram of brake bar in embodiment 2.
Label in attached drawing is as follows: cylinder body 1, the first cavity 1-1, the second cavity 1-2, air inlet 1-3, and brake bar exports 1-
4, park spring 2, turntable 3, poke rod 3-1, cylinder cap 4 parks piston 5, position-limiting cover 5-1, spline 5-1a, brake bar 6, spline
Body 6-1, guide bracket 6-2, brake-rod spring 7, the first block piece 8, second stopper 9, turntable spring 10, drag-line 11, impeller 12, manually
Release spring 13.
Specific embodiment
Embodiment 1
See that Fig. 1 to Figure 14, the present embodiment include cylinder body 1, cylinder cap 4, park piston 5 and brake bar 6, parks piston 5 for cylinder chamber
It is divided into the first cavity 1-1 of lower section and the second cavity 1-2 of top, corresponding first cavity 1-1 is equipped with air inlet 1-3 on cylinder body 1
Export 1-4 with brake bar, be equipped in the second cavity 1-2 and park spring 2, the upper end and cylinder cap 4 for parking spring 2 offset, lower end and
Piston 5 is parked to offset.
The center for parking piston 5 is equipped with position-limiting cover 5-1 protruding upward, and the middle part of the brake bar 6 is equipped with spline
The tooth of body 6-1, the spline body 6-1 of brake bar 6 are at least 4, and the tooth of the spline body 6-1 of brake bar 6 is 6 in attached drawing, increment
It is arc-shaped.The top of position-limiting cover 5-1 is equipped with the matched spline 5-1a of spline body 6-1 with brake bar 6, the flower of brake bar 6
The dynamic cooperation of the spline 5-1a of key body 6-1 and position-limiting cover 5-1, the upper end of brake bar 6 is pierced by position-limiting cover 5-1 and extends to the second cavity 1-
2, which is fixed with guide bracket 6-2, and the outer diameter of guide bracket 6-2 is greater than the outer diameter for parking the position-limiting cover 5-1 of piston 5.Position-limiting cover 5-1's
Outside is cased with brake-rod spring 7, and one end of brake-rod spring 7 offsets with the guide bracket 6-2 of brake bar 6, the other end and parks piston 5
It offsets.
The the first rotation position that there is the brake bar 6 the spline 5-1a for making its spline body 6-1 and position-limiting cover 5-1 to misplace and
Make the spline 5-1a of its spline body 6-1 and position-limiting cover 5-1 consistent second rotation position.When brake bar 6 is in the second rotation position,
Brake bar 6 can be moved up and down using spline body 6-1 along the spline 5-1a of position-limiting cover 5-1.
The cylinder cap 4 is equipped with turntable 3, turntable spring 10, corresponding first block piece 8 in position is rotated with brake bar first and
Brake bar second rotates the corresponding second stopper 9 in position.For 3 sets of the turntable on guide bracket 6-2, guide bracket 6-2 is equipped with feather key, turns
Disk 3 is equipped with the axially directed slot that cooperation is moved with the feather key of guide bracket 6-2, and brake bar can by the feather key on guide bracket 6-2
It rotates, and can be moved axially along the guide groove of turntable 3 with turntable 3.Turntable 3 has radial poke rod 3-1, when turntable 3
Poke rod 3-1 is supported and the first block piece 8, and brake bar 6 is in the first rotation position, when the poke rod 3-1 of turntable 3 is supported and second stopper 9,
Brake bar 6 is rotated to the second rotation position.Described 10 one end of turntable spring is connected on poke rod 3-1, and the other end is connected to cylinder cap 4
On.The drag-line 11 for hand relieving is additionally provided on the cylinder cap 4, the bottom end of drag-line 11 is connected with impeller 12, by drag-line 11
Impeller 12 drive poke rod 3-1 swing.Hand relieving spring 13 is cased on drag-line 11, one end of hand relieving spring 13 connects
It connects on cylinder cap 4, the other end is connected on impeller 12.
It is state when parking brake device is in inflation alleviation shown in Fig. 1,2 and Figure 12, in the work of turntable spring 10
Under, the poke rod 3-1 of turntable 3 is supported and the first block piece 8, and brake bar 6 is in the first rotation position at this time, and compressed air is from cylinder body
Air inlet 1-3 enters the first cavity 1-1, overcomes the active force for parking spring 2 to move upwards so that parking piston 5, brakes
Bar 6 also moves upwards under the action of brake-rod spring 7, to realize release of brake.Suitable the blowing pressure is selected, piston is made
There is gap h between the top surface 6-1a of the inner roof wall 5-1b and brake bar spline body 6-1 of position-limiting cover 5-1.The presence in gap guarantees
When reinflated after hand relieving, brake bar can smoothly return back to the first rotation position；Guarantee under inflation relieved state, brake bar is not
By piston force, parking brake discharges completely.
It is that parking brake device is in on-position shown in Fig. 3,4 and Figure 13, in inflation relieved state, turntable 3 is dialled
Lever 3-1 is supported and the first block piece 8, and the gas in the first cavity 1-1 of cylinder 1 is discharged, piston 5 is parked and is parking spring
Moved downward under the action of 2, at this point, brake bar 6 is in contact with piston 5 is parked, i.e. the inner roof wall 5-1b of piston limit cover 5-1 with
The top surface 6-1a of brake bar spline body 6-1 is affixed, and parks piston 5 with 6 downlink of brake bar, brake bar 6 passes through the braking of cylinder body 1
Bar exports 1-4 and stretches out, to realize parking brake.
State of the parking brake device in hand relieving shown in Fig. 5,6 and Figure 14, in the braking state under, park work
Plug 5 and brake bar 6 are in low level, such as need hand relieving, take following method: drag-line 11 are pulled, so that turntable 3 is stirred
Bar 3-1 overcomes the active force of turntable spring 10 to deflect, until offseting with second stopper 9, during this, turntable 3 is driven
Brake bar 6 rotates to the second rotation position, the spline 5- on the spline body 6-1 of brake bar 6 and the position-limiting cover 5-1 for parking piston 5
1a is consistent, and the energy storage due to parking spring 2 does not discharge completely in braking process, at this point, parking piston 5 is parking spring 2
Under the action of continue to move downwardly to lowest order, brake bar 6 moves upwards under the action of brake-rod spring 7, brake bar 6 it is upper
Portion is stretched out by the spline 5-1a on position-limiting cover 5-1,6 retract cylinder of brake bar, realizes hand relieving.
Shown in Fig. 7 and Fig. 8, the present embodiment unclamps drag-line 11, drag-line 11 is in hand relieving spring 13 after hand relieving
It is restored to original position under effect, is in due to spline body 6-1 in the spline 5-1a of position-limiting cover 5-1, poke rod 3-1 can not be replied
It is in situ.At this time, it may be necessary to be inflated to cylinder body, when compressed air enters the first cavity 1-1 from air inlet 1-3,5 edge of piston is parked
Brake bar 6 moves upwards, until position-limiting cover 5-1 is detached from spline body 6-1, shifting part 3-1 is turned round under the action of turntable spring 10,
To drive brake bar 6 to return back to the first rotation position, whole device is restored to state when inflation is alleviated.At this moment piston limit cover
There is gap h between the top surface 6-1a of the inner roof wall 5-1b and brake bar spline body 6-1 of 5-1.
Embodiment 2
Shown in Figure 15 and Figure 16, the spline body 6-1 of the present embodiment brake bar 6 is equipped with 12 teeth, the top of piston limit cover 5-1
Equipped with the matched 12 spline 5-1a of the spline body 6-1 of brake bar 6.Other see embodiment 1.
Embodiment of the present invention be only to clearly illustrate example of the present invention, and not be to the present invention
Embodiment restriction.For those of ordinary skill in the art, it can also make on the basis of the above description
Other various forms of variations or variation, such as the number and shape of tooth on brake bar spline body, as between brake bar and turntable
Connection type here no longer illustrates to all embodiments.
Claims (11)
1. a kind of rail traffic vehicles parking brake device, including cylinder body (1), park piston (5), brake bar (6) and cylinder cap
(4), it parks piston (5) and cylinder chamber is divided into the first cavity (1-1) of lower section and the second cavity (1-2) of top, the second cavity
It being equipped in (1-2) and parks spring (2), the upper end and cylinder cap (4) for parking spring (2) offset, and lower end offsets with piston (5) is parked,
It is characterized by: the center for parking piston (5) is equipped with position-limiting cover (5-1) protruding upward, the middle part of the brake bar (6)
Equipped with spline body (6-1), the top of position-limiting cover (5-1) is equipped with the matched spline (5- of spline body (6-1) with brake bar (6)
1a), the upper end of brake bar (6) is extended in the second cavity (1-2) by spline (5-1a), which is fixed with guide bracket (6-2),
The outside of position-limiting cover (5-1) is cased with brake-rod spring (7), one end of brake-rod spring (7) and the guide bracket (6-2) of brake bar (6)
It offsets, the other end offsets with piston (5) is parked；Brake bar (6) has the spline for making its spline body (6-1) and position-limiting cover (5-1)
First rotation position of slot (5-1a) dislocation and make the spline (5-1a) of its spline body (6-1) and position-limiting cover (5-1) consistent the
Two rotation positions；Cylinder cap (4) is equipped with turntable (3), turntable spring (10), first block piece corresponding with the rotation position of brake bar first
(8), second stopper (9) corresponding with the rotation position of brake bar second, turntable (3) connect with guide bracket (6-2) and between the two can phases
To axial movement, turntable (3) has radial poke rod (3-1)；The poke rod (3-1) of turntable (3) supports and the first block piece (8),
Then brake bar (6) is in the first rotation position, inflates at this time to the first cavity of cylinder body (1-1), parks piston (5) and brake bar (6)
Equal uplink realizes that inflation is alleviated；When cylinder exhaust makes to park piston (5) downlink, the inner roof wall (5-1b) of piston limit cover (5-1)
It is contacted with the top surface (6-1a) of brake bar spline body (6-1), parks piston (5) band brake bar (6) downlink, realize braking；Turntable
(3) poke rod (3-1) supports and second stopper (9), i.e., brake bar (6) is in the second rotation position, brake bar spline body (6-1)
Top can be pierced by the spline (5-1a) of position-limiting cover (5-1), and brake bar (6) uplink in the case where brake-rod spring (7) act on realizes hand
It is dynamic to alleviate.
2. rail traffic vehicles parking brake device according to claim 1, it is characterised in that: alleviate shape in inflation
State, tool is in gap between the inner roof wall (5-1b) of piston limit cover (5-1) and the top surface (6-1a) of brake bar spline body (6-1)
(h).
3. rail traffic vehicles parking brake device according to claim 1, it is characterised in that: the brake bar (6)
Guide bracket (6-2) outer diameter be greater than park piston (5) position-limiting cover (5-1) outer diameter.
4. rail traffic vehicles parking brake device according to claim 1, it is characterised in that: the brake bar (6)
The number of teeth of spline body (6-1) be at least 4.
5. rail traffic vehicles parking brake device according to claim 1, it is characterised in that: turntable (3) set
On guide bracket (6-2), guide bracket (6-2) is equipped with feather key, and turntable (3) is equipped with axially directed slot, and feather key and guide groove are dynamic
Cooperation.
6. rail traffic vehicles parking brake device according to claim 1, it is characterised in that: the turntable spring
(10) one end is connected on poke rod (3-1), and the other end is connected on cylinder cap (4).
7. rail traffic vehicles parking brake device according to claim 1, it is characterised in that: on the cylinder cap (4)
It is additionally provided with the drag-line (11) for hand relieving, the bottom end of drag-line (11) is connected with impeller (12), by the promotion of drag-line (11)
Part (12) drives poke rod (3-1) to swing.
8. rail traffic vehicles parking brake device according to claim 7, it is characterised in that: drag-line is cased on (11)
Hand relieving spring (13), one end of hand relieving spring (13) are connected on cylinder cap (4), and the other end is connected to impeller (12)
On.
9. a kind of hand relieving method of rail traffic vehicles parking brake device according to any one of claims 8, the method is as follows: draw
Dynamic drag-line (11), poke rod (3-1) is pushed to support for impeller (12) and second stopper (9), brake bar (6) are turned to turntable (3)
Second rotation position, the spline (5-1a) of spline body (6-1) and position-limiting cover (5-1) unanimously, park piston (5) and are parking spring
(2) lowest order is moved under the action of, while brake bar (6) moves up to highest order under the action of brake-rod spring (7),
The top of spline body (6-1) is pierced by the spline (5-1a) of position-limiting cover (5-1), and the former brake bar (6) for stretching out cylinder body is made to enter cylinder
Body completes hand relieving.
10. the hand relieving method of rail traffic vehicles parking brake device according to claim 9, feature exist
In: it unclamps drag-line (11), impeller (12) resets under the action of hand relieving spring (13), then to the first cavity of cylinder body
Piston (5) rising is parked in inflation, and the spline (5-1a) of its position-limiting cover (5-1) is made to be detached from the spline body (6-1) of brake bar (6),
Under the action of turntable spring (10), turntable (3) drives brake bar (6) to return back to the first rotation position, and it is slow to be restored to inflation at this time
Solution state.
11. the hand relieving method of rail traffic vehicles parking brake device according to claim 10, feature exist
In: in inflation relieved state, the inner roof wall (5-1b) of piston limit cover (5-1) and the top surface (6- of brake bar spline body (6-1)
Tool is in gap (h) between 1a).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711193091.5A CN109838482B (en) | 2017-11-24 | 2017-11-24 | Parking brake device for rail transit vehicle and manual relieving method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711193091.5A CN109838482B (en) | 2017-11-24 | 2017-11-24 | Parking brake device for rail transit vehicle and manual relieving method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109838482A true CN109838482A (en) | 2019-06-04 |
| CN109838482B CN109838482B (en) | 2024-04-30 |
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ID=66877360
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711193091.5A Active CN109838482B (en) | 2017-11-24 | 2017-11-24 | Parking brake device for rail transit vehicle and manual relieving method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109838482B (en) |
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|---|---|---|---|---|
| US4480531A (en) * | 1980-12-11 | 1984-11-06 | Wabco Fahrzeugbremsen Gmbh | Mechanical quick-release mechanism for spring-loaded brake cylinders |
| US4550811A (en) * | 1984-02-06 | 1985-11-05 | American Standard Inc. | Manually releasable parking brake device |
| CN1353061A (en) * | 2000-11-15 | 2002-06-12 | 株式会社纳博克 | Brake cylinder apparatus |
| CN102066171A (en) * | 2008-06-12 | 2011-05-18 | 瓦博泰克控股公司 | Spring-applied parking brake with manual release and reapply |
| CN202082317U (en) * | 2011-01-28 | 2011-12-21 | 中国铁道科学研究院机车车辆研究所 | Compact disc-shaped braking clamp of rail transit car braking system |
| CN102795240A (en) * | 2012-09-07 | 2012-11-28 | 中国铁道科学研究院机车车辆研究所 | Manual release device for foundation brake of rail transit vehicle |
| CN105980225A (en) * | 2013-12-27 | 2016-09-28 | 克诺尔商用车制动系统有限公司 | Spring brake cylinder with emergency release device |
| CN207621220U (en) * | 2017-11-24 | 2018-07-17 | 常州中车铁马科技实业有限公司 | A kind of rail traffic vehicles parking brake device |
-
2017
- 2017-11-24 CN CN201711193091.5A patent/CN109838482B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4480531A (en) * | 1980-12-11 | 1984-11-06 | Wabco Fahrzeugbremsen Gmbh | Mechanical quick-release mechanism for spring-loaded brake cylinders |
| US4550811A (en) * | 1984-02-06 | 1985-11-05 | American Standard Inc. | Manually releasable parking brake device |
| CN1353061A (en) * | 2000-11-15 | 2002-06-12 | 株式会社纳博克 | Brake cylinder apparatus |
| CN102066171A (en) * | 2008-06-12 | 2011-05-18 | 瓦博泰克控股公司 | Spring-applied parking brake with manual release and reapply |
| CN202082317U (en) * | 2011-01-28 | 2011-12-21 | 中国铁道科学研究院机车车辆研究所 | Compact disc-shaped braking clamp of rail transit car braking system |
| CN102795240A (en) * | 2012-09-07 | 2012-11-28 | 中国铁道科学研究院机车车辆研究所 | Manual release device for foundation brake of rail transit vehicle |
| CN105980225A (en) * | 2013-12-27 | 2016-09-28 | 克诺尔商用车制动系统有限公司 | Spring brake cylinder with emergency release device |
| CN207621220U (en) * | 2017-11-24 | 2018-07-17 | 常州中车铁马科技实业有限公司 | A kind of rail traffic vehicles parking brake device |
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| Publication number | Publication date |
|---|---|
| CN109838482B (en) | 2024-04-30 |
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