CN216642900U - Spring energy storage parking brake cylinder for rail transit vehicle brake - Google Patents
Spring energy storage parking brake cylinder for rail transit vehicle brake Download PDFInfo
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- CN216642900U CN216642900U CN202122382267.XU CN202122382267U CN216642900U CN 216642900 U CN216642900 U CN 216642900U CN 202122382267 U CN202122382267 U CN 202122382267U CN 216642900 U CN216642900 U CN 216642900U
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Abstract
The utility model provides a spring energy storage parking brake cylinder for a rail transit vehicle brake, which comprises a cylinder body, a cylinder cover, a piston arranged in the cylinder body, an energy storage spring for driving the piston to move, a lead screw and a lead screw sleeve, wherein the lead screw and the lead screw sleeve are connected through non-self-locking threads, the lead screw sleeve is arranged on the cylinder cover in a sliding mode through a key, a ratchet wheel abutting against the upper end of the energy storage spring is arranged on the cylinder cover through a first bearing, a lower spring seat abutting against the lower end of the energy storage spring is arranged in the middle of the piston through a second bearing, and the ratchet wheel is locked through a locking mechanism arranged on the cylinder cover. The utility model can realize the parking brake function, and the swing mechanism has transverse bearing capacity, thereby effectively reducing the manufacturing and processing requirements of the energy storage spring, improving the product reliability and reducing the part processing cost.
Description
Technical Field
The utility model relates to a parking brake technology of a rail transit vehicle brake, in particular to a parking brake technology for realizing parking brake by adopting an energy storage spring.
Background
According to the parking brake technology provided by Chinese standard 106763342, when the parking cylinder is used for manual mechanical release in the parking brake state, the rotation limitation of the ratchet wheel needs to be removed, and the parking screw rod and the lower spring seat rotate under the driving of the energy storage spring and the guiding of the non-self-locking thread and release the energy of the energy storage spring. In order to normally relieve parking brake in the relieving operation of the manual machine, the transverse load of the mechanism is required to be ensured to be as small as possible, and the fact that the machining difficulty of the energy storage spring is high, the transverse force is difficult to eliminate or reduce, and the machining precision of the rotary part can cause the mechanism to generate abnormal transverse load, so that the mechanism is blocked in rotation, and the function of relieving parking brake is blocked or fails is found in actual production.
SUMMERY OF THE UTILITY MODEL
Aiming at the problems of the existing transmission mechanism of the parking brake cylinder, the utility model provides a novel parking brake cylinder for a rail transit vehicle.
The purpose of the utility model is realized by the following technical scheme: the utility model provides a rail transit vehicle is spring energy storage parking brake jar for stopper, includes cylinder body, cylinder cap, locates the piston in the cylinder body, the energy storage spring of drive piston motion, its characterized in that: including lead screw and lead screw cover through non-auto-lock threaded connection, the lead screw cover sets up in the cylinder cap through key slidable ground, the cylinder cap is provided with the ratchet that supports energy storage spring upper end through first bearing, and the piston middle part is provided with the lower spring holder that supports energy storage spring lower extreme through the second bearing, the ratchet is through the locking mechanical system locking of locating the cylinder cap, the head of lead screw is arranged in down the spring holder and both form clutching mechanism, and when the spring holder had the trend towards the lead screw motion, clutching mechanism was in the lock-out state, when the spring holder had the trend of keeping away from the lead screw motion, clutching mechanism was in the unblock state.
When the parking brake of the brake needs to be automatically released, set compressed air is filled into a parking cylinder (between the bottom of a piston and a cylinder body), the compressed air pushes the piston to move upwards, a lower spring seat supported on the piston through a thrust bearing overcomes the axial acting force of an energy storage spring to move upwards along with the piston, meanwhile, a screw rod is screwed into a screw rod sleeve under the guidance of the piston pushing and non-self-locking threads until the piston limit is covered firmly, and the automatic releasing process is finished.
When parking braking is required to be applied, compressed gas filled into the cylinder body is discharged, the energy storage spring acts on the lower spring seat, the inclined plane of the lower spring seat is meshed with a friction clutch formed by the inclined plane of the screw rod seat, the screw rod is driven by the lower spring seat to move downwards, due to the arrangement of the non-self-locking threads, components formed by the ratchet wheel, the energy storage spring, the lower spring seat and the screw rod have a rotating trend but are limited to be incapable of rotating by a ratchet wheel stopping mechanism arranged outside the cylinder, and at the moment, the energy storage spring force finally drives the screw rod sleeve to move downwards to form parking braking power.
As described above, when manual mechanical relief is needed in a parking braking state, mechanical relief can be achieved by canceling rotation limitation of the ratchet wheel, and in the relief process, components comprising the ratchet wheel, the energy storage spring, the lower spring seat and the screw rod are supported on the cylinder cover and the piston through the bearing to rotate under the action of the energy storage spring and the guidance of the non-self-locking thread, and the force value of the energy storage spring is released.
In order to improve the reliability of the cylinder parking mechanism, the transverse load of the energy storage spring and the machining precision of a moving part are generally required to be strictly controlled, so that the machining difficulty of products is improved, the machining cost is increased, and the effect is not obvious.
In addition, the thrust bearing in the parking cylinder is partially or completely replaced by a bearing with transverse bearing capacity or a combination thereof, so that abnormal transverse load can be overcome, the slewing mechanism can smoothly run, the manufacturing and processing requirements of the energy storage spring can be greatly reduced, and the product reliability is improved.
Drawings
FIG. 1 is a schematic diagram of a spring brake parking cylinder according to the present invention.
FIG. 2 is a schematic view of a lead screw of the spring brake parking cylinder of the present invention.
FIG. 3 is a schematic view of a lower spring retainer for a spring parking brake cylinder according to the present invention.
FIG. 4 is a schematic diagram of the ratchet of the spring brake parking cylinder of the present invention.
Detailed Description
The utility model is described in detail below with reference to the drawings and specific examples.
In order to improve the reliability of mechanical release of a parking brake of a vehicle brake, the utility model provides a novel parking brake cylinder for a rail transit vehicle. Refer to FIGS. 1-4.
The utility model can be released by manually or electrically triggering the parking brake of the vehicle brake.
Referring to fig. 1, a novel parking brake cylinder for a rail transit vehicle includes: the device comprises a cylinder body 1, a piston 2, a bearing 3, a lower spring seat 4, an energy storage spring 5, a ratchet 6, a bearing 7, a cylinder cover 10, a screw rod 8, a screw rod sleeve 9 and a thimble 11. The screw rod 8 penetrates through the lower spring seat 4, the head inclined plane 8.1 of the screw rod and the spring seat inclined plane 4.1 to form a friction clutch, as shown in figures 2 and 3.
The lower spring seat 4 is supported on the piston 2 by a bearing 3 and is restricted from axial movement with the piston 2 by a retainer ring 12. One end of the energy storage spring 5 is supported on the ratchet wheel 6, and the other end is supported on the lower spring seat 4. The ratchet 6 is supported on the cylinder head 10 by a bearing 7. The cylinder cover 10 is connected with the cylinder body 1 through a retainer ring. The screw 8 is supported on the piston 2 through the thimble 11 and its tail spring. The screw rod 8 is in non-self-locking threaded connection with the screw rod sleeve 9. Ratchet teeth 6.1 are uniformly distributed on the circumference of the ratchet wheel 6 as shown in figure 4, and the ratchet wheel 6 can be arranged outside a cylinder to drive a mechanism (non-patent claims are not repeated) to limit the rotary motion as required.
The screw rod sleeve 9 is limited by an external mechanism and can only do linear motion, the screw rod sleeve is used as a driving mechanism, and an energy storage spring force value can be transmitted to the external mechanism to be used as vehicle parking braking power.
When the parking brake is required to be implemented and the inflation and relief are carried out, set compressed air is filled into a parking cylinder (between the bottom of a piston and a cylinder body), the compressed air pushes the piston 4 to move upwards, the lower spring seat 4 supported on the piston 2 through the bearing 3 overcomes the axial acting force of the energy storage spring 5 to move upwards along with the piston, meanwhile, the screw rod 8 is screwed into the screw rod sleeve 9 under the pushing of the piston 2 and the guiding of a non-self-locking thread until the piston 2 is limited on the cylinder cover 10, and the automatic relief process is finished.
When parking braking is required to be applied, compressed gas filled into the cylinder body is discharged, the energy storage spring 5 acts on the lower spring seat 4, the inclined plane of the lower spring seat is meshed with a friction clutch formed by the inclined plane of the screw rod, the screw rod 8 is driven by the lower spring seat 4 to move downwards, a part formed by the ratchet wheel 6, the energy storage spring 5, the lower spring seat 4 and the screw rod 8 has a rotation trend under the guidance of a non-self-locking thread, but is limited by the fact that a ratchet wheel stopping mechanism arranged outside the cylinder cannot rotate, and at the moment, the energy storage spring 5 finally drives the screw rod sleeve 9 to move downwards to form parking braking power.
When manual machinery is required to be relieved in a parking braking state, the mechanical relief can be realized by canceling the rotation limitation of the ratchet wheel, and in the relief process, the part consisting of the ratchet wheel 6, the energy storage spring 5, the lower spring seat 4 and the screw rod 8 can quickly rotate under the action of the energy storage spring 5 and the guide of a non-self-locking thread through the bearing 3 and the bearing 7 and release the energy of the energy storage spring.
The above-described examples are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
Claims (9)
1. The utility model provides a rail transit vehicle is spring energy storage parking brake jar for stopper, includes cylinder body (1), cylinder cap (10), locates piston (2) in cylinder body (1), energy storage spring (5) of drive piston (2) motion, its characterized in that: including lead screw (8) and lead screw cover (9) through non-auto-lock threaded connection, lead screw cover (9) set up in cylinder cap (10) through key slidable ground, cylinder cap (10) are provided with ratchet (6) of supporting energy storage spring (5) upper end through first bearing (7), and piston (2) middle part is provided with lower spring holder (4) of supporting energy storage spring (5) lower extreme through second bearing (3), ratchet (6) are through the locking mechanical system locking of locating cylinder cap (10), the head of lead screw (8) is arranged in lower spring holder (4) and both form clutching mechanism, and when lower spring holder (4) had the trend of moving towards lead screw (8), clutching mechanism was in the locking state, and when lower spring holder (4) had the trend of keeping away from lead screw (8) motion, clutching mechanism was in the unblock state.
2. Spring brake cylinder for rail vehicle brakes according to claim 1, characterized in that: the screw rod (8) is provided with a screw rod head inclined plane (8.1), the lower spring seat (4) is provided with a spring seat inclined plane (4.1), and the screw rod head inclined plane (8.1) and the spring seat inclined plane (4.1) form a friction clutch.
3. Spring brake cylinder for rail vehicle brakes according to claim 1, characterized in that: the screw rod (8) is provided with a screw rod head ratchet, the lower spring seat (4) is provided with a spring seat ratchet, and the screw rod head ratchet and the spring seat ratchet form a ratchet clutch.
4. Spring brake cylinder for rail vehicle brakes according to claim 1, characterized in that: the top end of the screw rod (8) is supported with a thimble (11) through a pressure spring, and the thimble (11) is propped against the center of the upper surface of the piston (2).
5. Spring brake cylinder for rail vehicle brakes according to claim 1, characterized in that: there is also a manual release mechanism for releasing the locking mechanism.
6. Spring brake cylinder for rail vehicle brakes according to claim 1, characterized in that: the first bearing (7) and/or the second bearing (3) are angular contact bearings.
7. Spring brake cylinder for rail vehicle brakes according to claim 1, characterized in that: the first bearing (7) and/or the second bearing (3) are/is a combined bearing consisting of a deep groove ball bearing and a thrust ball bearing.
8. Spring brake cylinder for rail vehicle brakes according to claim 1, characterized in that: the lower spring seat (4) is limited on the piston (2) through a retainer ring (12).
9. Spring brake cylinder for rail vehicle brakes according to claim 1, characterized in that: the cylinder cover (10) is fixed with the cylinder body (1) through a retainer ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122382267.XU CN216642900U (en) | 2021-09-29 | 2021-09-29 | Spring energy storage parking brake cylinder for rail transit vehicle brake |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122382267.XU CN216642900U (en) | 2021-09-29 | 2021-09-29 | Spring energy storage parking brake cylinder for rail transit vehicle brake |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216642900U true CN216642900U (en) | 2022-05-31 |
Family
ID=81730709
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122382267.XU Active CN216642900U (en) | 2021-09-29 | 2021-09-29 | Spring energy storage parking brake cylinder for rail transit vehicle brake |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216642900U (en) |
-
2021
- 2021-09-29 CN CN202122382267.XU patent/CN216642900U/en active Active
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