CN112833119A - Manual parking relieving device and parking brake cylinder - Google Patents
Manual parking relieving device and parking brake cylinder Download PDFInfo
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- CN112833119A CN112833119A CN202110001998.7A CN202110001998A CN112833119A CN 112833119 A CN112833119 A CN 112833119A CN 202110001998 A CN202110001998 A CN 202110001998A CN 112833119 A CN112833119 A CN 112833119A
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- parking
- wedge
- relieving
- cavity
- hand
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D65/00—Parts or details
- F16D65/14—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61H—BRAKES OR OTHER RETARDING DEVICES SPECIALLY ADAPTED FOR RAIL VEHICLES; ARRANGEMENT OR DISPOSITION THEREOF IN RAIL VEHICLES
- B61H11/00—Applications or arrangements of braking or retarding apparatus not otherwise provided for; Combinations of apparatus of different kinds or types
- B61H11/06—Applications or arrangements of braking or retarding apparatus not otherwise provided for; Combinations of apparatus of different kinds or types of hydrostatic, hydrodynamic, or aerodynamic brakes
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2121/00—Type of actuator operation force
- F16D2121/02—Fluid pressure
- F16D2121/04—Fluid pressure acting on a piston-type actuator, e.g. for liquid pressure
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Braking Arrangements (AREA)
Abstract
The invention relates to a manual parking relieving device and a parking brake cylinder, wherein the relieving device comprises: the relieving body is internally provided with a relieving cavity, and one end of the relieving body is provided with an air inlet; the hand buffering wedge is provided with a through hole on the circumference, one end of the hand buffering wedge is arranged in the buffering cavity, and the other end of the hand buffering wedge extends out of the buffering body; a wedge-shaped working surface matched with the pawl component is arranged on the hand buffering wedge arranged in the relieving cavity; the first elastic piece is arranged between the hand buffering wedge and the relieving cavity; the sliding piece is arranged in the through hole; the limiting piece is arranged on the inner wall of the release body; the relieving piston is arranged in the relieving cavity and is connected with the hand buffering wedge to form an isolation cavity, a vent hole is formed in the relieving piston, and the aperture of the vent hole is smaller than that of the air inlet; the isolation piston is arranged in the isolation cavity, and a conical surface matched with the sliding piece is arranged outside the isolation piston; the second elastic piece is arranged in the isolation cavity and is positioned between the isolation piston and the hand buffering wedge. The invention realizes double relief of compressed air and manpower, can keep in the relief position all the time after relief, and ensures stable and reliable parking relief state.
Description
Technical Field
The invention belongs to the technical field of rail transit vehicle braking, relates to a rail vehicle braking device, and particularly relates to a manual parking relieving device and a parking brake cylinder.
Background
The braking device for the rail transit vehicle has a parking braking function, wherein most of parking braking is applied by a compression spring, and the parking braking has the working principle that: the parking cylinder is charged with compressed air to relieve the parking brake, and the discharged compressed air applies the parking brake by the force of the compressed spring. In very extreme cases, there is a need to manually relieve parking brakes by manual means in the absence of wind.
The utility model discloses a device is alleviated in manual of vehicle parking jar is disclosed to the chinese utility model device that the grant bulletin number is CN206409553U, the device is including fixing the hand of parking jar outer wall and alleviating the body, the hand is alleviated the body and is had the cavity, be equipped with the arm-tie in the cavity, the arm-tie comprises the arm-tie body of rod and arm-tie main part, be equipped with arm-tie reset spring on the arm-tie body, be equipped with the breach in the arm-tie main part, the upper portion of breach wall is the arc surface, the lower part of breach wall is the inclined plane, the lower extreme from the arc surface to the inclined plane on the breach wall is equipped with the axial groove who link up the cylinder face, be equipped with the roll member in the breach, the roll member is connected with the drag hook, the drag hook. The device transmits input force through the inclined plane of the pull pin, amplifies the force value, and reduces manual release tension. However, the device does not have a state recognition function, and cannot keep the manual relieving device in a relieving position (isolation state) after manual relieving, so that the state of relieving parking is ensured to be stable and reliable, the vehicle runs under the state of relieving manual parking, and if the parking cylinder is charged and exhausted in an unexpected situation, the parking cylinder is accidentally applied, so that the running risk is caused.
Disclosure of Invention
The invention provides a manual parking alleviating device with state recognition and a parking brake cylinder, aiming at the problems that the existing manual parking cylinder alleviating device is difficult to ensure the stable and reliable parking alleviating state and the like, and the parking alleviating state can be ensured to be stable, and the driving safety is improved.
In order to achieve the above object, the present invention provides a parking manual mitigation device, comprising:
the release body is internally provided with a release cavity, and one end of the release body is provided with an air inlet communicated with the release cavity;
the hand buffering wedge is provided with a through hole on the circumference, one end of the hand buffering wedge is arranged in the buffering cavity, and the other end of the hand buffering wedge extends out of the buffering body; a wedge-shaped working surface matched with the pawl component is arranged on the hand buffering wedge arranged in the relieving cavity;
the first elastic piece is arranged in the relieving cavity and positioned between the hand buffering wedge and the relieving cavity;
the sliding piece is arranged in the through hole;
the limiting piece is arranged on the inner wall of the release body;
the relieving piston is arranged in the relieving cavity and is connected with the hand buffering wedge to form an isolation cavity, a vent hole for communicating the relieving cavity with the isolation cavity is formed in the relieving piston, and the aperture of the vent hole is smaller than that of the air inlet;
the isolation piston is arranged in the isolation cavity, and a conical surface matched with the sliding piece is arranged outside the isolation piston;
the second elastic piece is arranged in the isolation cavity and is positioned between the isolation piston and the hand buffering wedge.
Further, still include first sealing member, first sealing member is located between alleviating piston and the alleviating body.
Further, a second seal is included and is disposed between the relief piston and the isolation piston.
Preferably, the hand buffering wedge and the relieving piston are in interference press fitting, or bonding or threaded connection, and the relieving piston and the hand buffering wedge are coaxial.
Preferably, the hand relief wedge comprises:
the first end part of the hand pulling body is arranged in the relieving cavity, and the second end part of the hand pulling body extends out of the relieving body;
the wedge body is arranged in the relieving cavity, the first end part of the wedge body is connected with the first end part of the hand-pulling body, the through hole is formed in the circumference of the second end part of the wedge body, and the wedge-shaped working surface is positioned on the wedge body.
Preferably, the pawl assembly comprises a pawl and a bearing arranged in the relieving cavity, a first end of the pawl is matched with the ratchet wheel in the parking cylinder, a second end of the pawl penetrates through the relieving body to be connected with the bearing, and the bearing is matched with the wedge-shaped working surface.
Furthermore, the ratchet mechanism further comprises a third elastic piece, and the third elastic piece is located between the release body and a boss arranged at the first end part of the pawl.
Furthermore, the hand buffering wedge device further comprises a damping piece which is arranged in the isolation cavity, is positioned between the isolation piston and the hand buffering wedge and is arranged in parallel with the second elastic piece.
In order to achieve the purpose, the invention further provides a parking brake cylinder which comprises a parking cylinder and a brake cylinder connected with the parking cylinder, and further comprises the manual parking release device, wherein the manual parking release device is installed on the parking cylinder, a hand buffering wedge of the manual parking release device is connected with a pawl assembly of the parking cylinder, and an air inlet of the manual parking release device is communicated with the parking cylinder.
Compared with the prior art, the invention has the advantages and positive effects that:
(1) the manual parking relieving device has the functions of inflation relieving and parking braking, manual relieving and parking braking and parking cylinder isolation, automatically keeps a manual relieving state (namely isolating the parking cylinder) after manual operation parking relieving, prevents mistaken inflation and deflation of the parking cylinder under a rescue working condition, prevents accidental parking application and improves driving safety. When the parking cylinder is inflated again to the rated pressure, the manual relieving device automatically restores to the preparation state.
(2) The invention adopts a double-piston parallel structure, an isolation piston moving along the axial direction is arranged between the release piston and the hand buffering wedge, the thrust of the isolation piston is transmitted to the hand buffering wedge through a second elastic piece to form the release force of the hand buffering wedge, simultaneously, the conical surface on the isolation piston is contacted with a sliding piece arranged in a through hole on the circumference of the hand buffering wedge in a clearance manner, along with the axial movement of the isolation piston, the sliding piece moves along the axial direction of the hole in the through hole, the outward extrusion realizes the locking of the hand buffering wedge, the inward retraction realizes the release of the hand buffering wedge, and the locking and the release of parking brake are completed. The axial movement of the isolation piston is converted into the radial movement of the sliding part, so that a larger radial locking force is realized by a smaller axial force, and the locking reliability is ensured.
(3) The release piston is provided with the vent hole, so that the pressure difference between the air pressure borne by the isolation piston and the air pressure borne by the release piston is realized in the air charging and discharging process, the asynchronous movement of the piston and the isolation piston is realized, meanwhile, the damping piece can delay the movement of the isolation piston, the release piston moves earlier than the isolation piston, the hand buffering wedge is ensured not to be locked in the parking cylinder exhaust applying parking brake process, and the hand buffering wedge is released.
(4) According to the manual parking release device, the second elastic piece drives the isolation piston and the damping piece, the air pressure in the parking cylinder can be automatically identified, the sliding piece and the limiting piece are used for locking and unlocking the hand buffering wedge, the manual parking release device is always kept at a release position (namely an isolation state) after manual release, and the manual parking release device can be restored to the locking state only after the device is inflated to the set pressure and then exhausted.
Drawings
FIG. 1 is a schematic structural diagram of a parking manual mitigation device according to an embodiment of the present invention;
FIG. 2 is a view of an inflated relaxed state of a manual park release device in accordance with an embodiment of the present invention;
FIG. 3 is an enlarged view of portion A of FIG. 2;
FIG. 4 is an enlarged view of portion B of FIG. 2;
FIG. 5 is a parking brake state diagram of the manual parking mitigation device of the embodiment of the present invention;
FIG. 6 is an enlarged view of portion A of FIG. 5;
FIG. 7 is a parking brake state diagram of the manual release device for parking according to the embodiment of the present invention;
fig. 8 is an enlarged view of a portion a in fig. 7.
In the figure, 1, a release body, 101, a release cavity, 102, an air inlet, 2, a hand release wedge, 201, a wedge-shaped working surface, 202, a hand pull body, 203, a wedge body, 3, a through hole, 4, a first elastic piece, 501, a sliding piece, 502, a limiting piece, 6, a release piston, 601, a through hole, 7, an isolation cavity, 8, an isolation piston, 9, a second elastic piece, 10, a first sealing piece, 11, a second sealing piece, 12, a pawl, 13, a bearing, 14, a third elastic piece, 15 and a boss.
Detailed Description
The invention is described in detail below by way of exemplary embodiments. It should be understood, however, that elements, structures and features of one embodiment may be beneficially incorporated in other embodiments without further recitation.
In the description of the present invention, it should be noted that the terms "upper", "lower", "left", "right", "inner", "outer", etc. indicate orientations or positional relationships based on positional relationships shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Example 1: referring to fig. 1 to 4, a parking manual mitigation device includes:
the release body 1 is internally provided with a release cavity 101, and one end of the release body 1 is provided with an air inlet 102 communicated with the release cavity 101;
one end of the hand buffering wedge 2, which is provided with a through hole 3 on the circumference, is arranged in the relieving cavity 101, and the other end extends out of the relieving body 1; a wedge-shaped working surface 201 matched with the pawl component is arranged on the hand buffering wedge 2 arranged in the relieving cavity 101;
the first elastic piece 4 is arranged in the relieving cavity 101 and is positioned between the hand buffering wedge 2 and the relieving body 1;
a slider 501 provided in the through hole 3;
a stopper 502 provided on an inner wall of the release body 1;
the relieving piston 6 is arranged in the relieving cavity 101 and is connected with the hand buffering wedge 2 to form an isolation cavity 7, a vent hole 601 for communicating the relieving cavity 101 with the isolation cavity 7 is formed in the relieving piston 6, and the aperture of the vent hole 601 is smaller than that of the air inlet 102;
the isolation piston 8 is arranged in the isolation cavity 7, and a conical surface matched with the sliding piece 5 is arranged outside the isolation piston 8;
and the second elastic piece 9 is arranged in the isolation cavity 7 and is positioned between the isolation piston 8 and the hand buffering wedge 2.
With continued reference to fig. 2, the above-mentioned parking manual mitigation device further comprises a first seal 10, said first seal 10 being provided between the mitigation piston 6 and the mitigation body 1. Specifically, the first sealing element is a sealing ring, which may be an O-ring, a K-ring, or a sealing ring with other cross-sectional shapes, and the sealing ring may be installed on the relief piston, or may be installed on the relief body, so as to seal a gap between the relief piston and the relief body.
With continued reference to fig. 2, the above-described parking manual mitigation device further comprises a second seal 11, said second seal 11 being provided between the mitigation piston 6 and the isolation piston 8. Specifically, the second sealing element is a sealing ring, which may be an O-ring, a K-ring, or a sealing ring with other cross-sectional shapes, and the sealing ring may be installed on the release piston or the isolation piston, and is used to seal a gap between the release piston and the isolation piston.
Specifically, the hand buffering wedge and the relieving piston are in interference press fitting, or are bonded or are in threaded connection, the relieving piston is coaxial with the hand buffering wedge, and the relieving piston and the hand buffering wedge are guaranteed to move integrally after being assembled.
In particular, with continued reference to fig. 2, the hand relief wedge 2, comprises:
a hand-pulling body 202, the first end of which is arranged in the relief cavity 101 and the second end of which extends out of the relief body 1;
the wedge 203 is arranged in the relieving cavity 101, the first end of the wedge 203 is connected with the first end of the hand-pulling body 202, the through hole 3 is arranged on the circumference of the second end of the wedge 203, and the wedge working surface 201 is positioned on the wedge 203.
With continued reference to fig. 2, the pawl assembly includes a pawl 12 and a bearing 13 disposed within the relief cavity 101, a first end of the pawl 12 engaging a ratchet wheel in the parking cylinder, a second end of the pawl 12 passing through the relief body 1 and engaging the bearing 13, the bearing 13 engaging the wedge-shaped working surface 201.
With continued reference to fig. 2, the manual parking mitigation device further comprises a third elastic element 14, the third elastic element 14 being located between the mitigation body 1 and a boss 15 provided at the first end of the pawl. The pawl assembly is pressed on the wedge-shaped working surface of the hand buffering wedge through the third elastic piece, and the pawl assembly is convenient to reset. Specifically, the bearing is pressed tightly on the wedge-shaped working face of the hand buffering wedge through the pawl through the third elastic piece, the bearing rolls along the wedge-shaped working face and drives the pawl to move axially, the pawl moves upwards along the wedge-shaped working face, the pawl releases locking parking braking of the ratchet wheel and releases the releasing, the pawl moves downwards along the wedge-shaped working face, and the pawl restores locking of the ratchet wheel.
Specifically, the manual parking release device further comprises a damping piece which is arranged in the isolation cavity, is located between the isolation piston and the hand buffering wedge, and is arranged in parallel with the second elastic piece.
Specifically, in this embodiment, the first elastic member, the second elastic member and the third elastic member are all return springs.
Specifically, in this embodiment, the sliding member is a steel ball, but is not limited to a steel ball, and may be another structural body such as a columnar body. The limiting body is a groove arranged on the inner wall of the relieving body, but not limited to the groove, and can also be a baffle plate arranged on the inner wall of the relieving body. The sliding part is matched with the limiting body for use, and locking and releasing of the manual releasing device for parking are achieved.
According to the manual release device for parking, the release body is installed on the parking cylinder, the wedge-shaped working face is connected with the pawl assembly, the air inlet is communicated with the parking cylinder, the air pressure in the manual release device for parking and the air pressure in the parking cylinder are kept consistent, and the vent hole leads compressed air into the isolation piston and controls the air charging and discharging rate of the isolation piston.
In the normal running process of the train, when the parking cylinder is in the air charging relieving state, referring to fig. 2 and 4, compressed air is charged into the parking manual relieving device through the air inlet, so that the parking manual relieving device is in the air charging relieving state. At the moment, the compressed air pushes the relieving piston to move leftwards, meanwhile, the hand buffering wedge is driven to move leftwards, the first elastic piece is compressed, the pawl assembly is pushed to move upwards along the wedge-shaped working face of the hand buffering wedge, the pawl moves upwards, and the parking cylinder is kept in a relieving state. Meanwhile, the compressed air pushes the isolation piston to move leftwards, the hand buffering wedge is compressed to compress the second elastic piece, the isolation piston does not extrude the steel ball any more, and the steel ball retreats into the through hole of the hand buffering wedge.
The train needs to apply parking brake after stopping to prevent sliding. At this time, the parking cylinder is emptied of compressed air, and the manual parking release device is also emptied of compressed air. Referring to fig. 5 and 6, the hand wedge moves rightward together with the release piston by the first elastic member. Because the compressed air discharge rate in the vent hole control isolation piston is far less than the compressed air discharge rate in the release piston, therefore in the rightward movement process of the release piston, the second elastic part is still pressed, the isolation piston still presses the hand buffering wedge, the steel ball is still in the through hole of the hand buffering wedge, and the release piston can smoothly move rightward. The pawl assembly moves downwards along the wedge-shaped working surface of the hand buffering wedge, the pawl assembly is in a locking position, and the parking function of the parking cylinder is recovered.
Apply the vehicle of parking braking under the working condition of seeking help and need manually alleviate the parking braking, by the manpower to left pull hand slow wedge when manually alleviating the parking braking, the wedge working face upward movement of pawl subassembly edge hand slow wedge drives the pawl along the axial upward movement unblock and parks the jar simultaneously, and the parking braking is alleviated. Referring to fig. 7 and 8, under the action of the second elastic piece, the isolation piston is pushed to move rightwards to extrude the steel ball, the hand buffering wedge automatically pops out along with the leftward movement of the hand buffering wedge, the hand buffering wedge is limited by the groove to reset rightwards, and the hand buffering wedge is kept at a releasing position. After the fault is eliminated, compressed air with a set pressure value is filled into the manual parking release device (meanwhile, the parking cylinder), the second elastic piece is compressed, the steel ball returns into the through hole, the hand buffering wedge moves rightwards under the action of the first elastic piece during air exhaust, the pawl assembly moves downwards along the axial direction, the parking cylinder is locked, and parking brake is applied. When the parking brake is manually released, the basic brake device still has a service brake function, the brake and release functions of the brake cylinder are normal, at the moment, the parking brake cylinder is also required to be ensured to be in an isolated state, and the parking brake cannot be triggered even if compressed air of the brake air pipe is charged into the parking cylinder and then discharged, and it needs to be noted that the air pressure of the brake air pipe is far smaller than the working pressure of the parking brake cylinder.
The above-mentioned manual device of alleviating parking of parking both can realize aerifing and alleviate the parking braking, also can manually alleviate the parking braking, still possess the parking jar isolation function, can be according to the pressure signal (being the drive power source of hand slow wedge motion) automatic identification in the parking jar at present be in aerify and alleviate the state or the manual state of alleviating, and with hand slow wedge locking in the manual position of alleviating, let the manual device of alleviating of parking always be in the state of alleviating (being the parking jar is kept apart, can not apply the parking braking), it fills the wind to park the jar until next time, the manual device automatic recovery of alleviating of steel ball unblock parking is to the prepared state, the parking jar can continue to apply the parking braking, the parking is alleviated, effectively prevent to fill the exhaust to the parking jar under the rescue operating mode by mistake, lead to park the accident and apply, guarantee to alleviate the state reliable and stable.
Example 2: a park brake cylinder, including parking the jar and with park the brake cylinder that the jar is connected, still include above-mentioned embodiment 1 park manual release device, park manual release device and install on parking the jar, park the hand slow wedge of manual release device and park the pawl subassembly of jar and be connected, park the air intake and the jar intercommunication of parking of manual release device.
The parking brake cylinder of the embodiment is provided with a manual parking relieving device which can realize inflation relieving parking brake and manual relieving parking brake, and has a parking cylinder isolation function, the manual parking relieving device can automatically identify whether the current state is in the inflation relieving state or the manual relieving state according to a pressure signal (namely, a driving force source of the motion of a hand slow wedge) in the parking cylinder, and lock the hand slow wedge at a manual relieving position, so that the manual parking relieving device is always in the relieving state (namely, the parking cylinder is isolated and can not apply parking brake), until the next parking cylinder is inflated, the manual parking relieving device is automatically restored to a standby state after being unlocked by a steel ball, the parking cylinder can continuously apply parking brake and parking relieve, the mistaken inflation and exhaust to the parking cylinder under the rescue working condition can be effectively prevented, the parking accident application is caused, and the relieving state is ensured to be stable and reliable, the driving safety is improved.
The above-described embodiments are intended to illustrate rather than to limit the invention, and any modifications and variations of the present invention are possible within the spirit and scope of the claims.
Claims (9)
1. A manual park mitigation device, comprising:
the interior of the relief body (1) is provided with a relief cavity (101), and one end of the relief body (1) is provided with an air inlet (102) communicated with the relief cavity (101);
one end of the hand buffering wedge (2) provided with the through hole (3) on the circumference is arranged in the buffering cavity (101), and the other end of the hand buffering wedge extends out of the buffering body (1); a wedge-shaped working surface (201) matched with the pawl component is arranged on the hand buffering wedge (2) arranged in the relieving cavity (101);
the first elastic piece (4) is arranged in the relieving cavity (101) and is positioned between the hand buffering wedge (2) and the relieving body (1);
the sliding piece (501) is arranged in the through hole (3);
the limiting piece (502) is arranged on the inner wall of the release body (1);
the relieving piston (6) is arranged in the relieving cavity (101) and is connected with the hand buffering wedge (2) to form an isolating cavity (7), a vent hole (601) for communicating the relieving cavity (101) with the isolating cavity (7) is formed in the relieving piston (6), and the aperture of the vent hole (601) is smaller than that of the air inlet (102);
the isolation piston (8) is arranged in the isolation cavity (7), and a conical surface matched with the sliding piece (501) is arranged outside the isolation piston (8);
and the second elastic piece (9) is arranged in the isolation cavity (7) and is positioned between the isolation piston (8) and the hand buffering wedge (2).
2. Parking manual mitigation device according to claim 1, further comprising a first seal (10), said first seal (10) being provided between the mitigation piston (6) and the mitigation body (1).
3. Parking manual mitigation device according to claim 1 or 2, further comprising a second seal (11), said second seal (11) being provided between the mitigation piston (6) and the isolation piston (8).
4. The manual parking relieving device according to claim 1, wherein the hand buffering wedge (2) and the relieving piston (6) are connected together by interference press fitting, or bonding, or screwing, and the relieving piston (6) and the hand buffering wedge (2) are coaxial.
5. Parking manual mitigation device according to claim 1 or 4, wherein said hand relief wedge (2) comprises:
a hand-pulling body (202), the first end of which is arranged in the relieving cavity (101) and the second end of which extends out of the relieving body (1);
the wedge body (203) is arranged in the relieving cavity (101), the first end part of the wedge body is connected with the first end part of the hand-pulling body (202), the through hole (3) is arranged on the circumference of the second end part of the wedge body (203), and the wedge-shaped working surface (201) is positioned on the wedge body (203).
6. Parking hand mitigation device according to claim 5, wherein the pawl assembly comprises a pawl (12) and a bearing (13) arranged in the mitigation chamber (101), a first end of the pawl (12) cooperating with a ratchet wheel in the parking cylinder, a second end of the pawl (12) being connected to the bearing (13) through the mitigation body (1), the bearing (13) cooperating with the wedge shaped working surface (201).
7. Parking manual mitigation device according to claim 6, further comprising a third elastic element (14), the third elastic element (14) being located between the mitigation body (1) and a boss (15) provided at the first end of the pawl.
8. Parking manual mitigation device according to claim 1, further comprising a damping member, provided in the isolation chamber, between the isolation piston (8) and the hand relief wedge (2), and juxtaposed to the second elastic member (9).
9. Parking brake cylinder comprising a parking cylinder and a brake cylinder connected to the parking cylinder, characterized in that it further comprises a manual parking mitigation device according to any of claims 1 to 8, said manual parking mitigation device being mounted on the parking cylinder, the hand wedges of said manual parking mitigation device being connected to the pawl assemblies of the parking cylinder, the air inlet of said manual parking mitigation device being in communication with the parking cylinder.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110001998.7A CN112833119B (en) | 2021-01-04 | 2021-01-04 | Manual parking relieving device and parking brake cylinder |
| PCT/CN2021/122580 WO2022142567A1 (en) | 2021-01-04 | 2021-10-08 | Relief apparatus and parking brake cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110001998.7A CN112833119B (en) | 2021-01-04 | 2021-01-04 | Manual parking relieving device and parking brake cylinder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112833119A true CN112833119A (en) | 2021-05-25 |
| CN112833119B CN112833119B (en) | 2022-06-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110001998.7A Active CN112833119B (en) | 2021-01-04 | 2021-01-04 | Manual parking relieving device and parking brake cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112833119B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113830056A (en) * | 2021-10-09 | 2021-12-24 | 中车青岛四方车辆研究所有限公司 | Parking brake unit and electromechanical brake clamp |
| WO2022142567A1 (en) * | 2021-01-04 | 2022-07-07 | 中车青岛四方车辆研究所有限公司 | Relief apparatus and parking brake cylinder |
| AT524544B1 (en) * | 2021-06-25 | 2022-07-15 | Siemens Mobility Austria Gmbh | Brake actuator and brake unit for a vehicle brake |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2022142567A1 (en) * | 2021-01-04 | 2022-07-07 | 中车青岛四方车辆研究所有限公司 | Relief apparatus and parking brake cylinder |
| AT524544B1 (en) * | 2021-06-25 | 2022-07-15 | Siemens Mobility Austria Gmbh | Brake actuator and brake unit for a vehicle brake |
| AT524544A4 (en) * | 2021-06-25 | 2022-07-15 | Siemens Mobility Austria Gmbh | Brake actuator and brake unit for a vehicle brake |
| CN113830056A (en) * | 2021-10-09 | 2021-12-24 | 中车青岛四方车辆研究所有限公司 | Parking brake unit and electromechanical brake clamp |
| WO2023056953A1 (en) * | 2021-10-09 | 2023-04-13 | 中车青岛四方车辆研究所有限公司 | Parking brake unit and electromechanical brake clamp |
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| Publication number | Publication date |
|---|---|
| CN112833119B (en) | 2022-06-21 |
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