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CN-121977031-A - Pressure release type pushing device and braking system

CN121977031ACN 121977031 ACN121977031 ACN 121977031ACN-121977031-A

Abstract

The invention provides a pressure relief type pushing device and a braking system, and relates to the field of braking, wherein the pressure relief type pushing device comprises a shell, a first cavity and a second cavity are formed in the shell through separation of a partition plate, the first cavity and the second cavity are used for containing hydraulic medium, and the partition plate is provided with a circulation port used for communicating the first cavity and the second cavity; the hydraulic pump is used for driving the hydraulic medium to flow into the second cavity from the first cavity, the driving component is partially positioned in the second cavity and used for moving in a direction away from the partition plate under the driving of the hydraulic medium, the resetting piece is positioned in the second cavity and is in contact with the driving component and used for driving the driving component to move in a direction close to the partition plate, wherein the part, extending out of the second cavity, of the driving component is used for driving a braking structure of the braking device to generate braking force, the braking force is reduced in a state that the driving component moves in a direction away from the partition plate, and the braking force is increased in a state that the driving component moves in a direction close to the partition plate. The braking system has simple structure and high braking reliability.

Inventors

  • WANG YUSHENG

Assignees

  • 枣阳市荣生工贸有限公司

Dates

Publication Date
20260505
Application Date
20260108

Claims (12)

  1. 1. A pressure relief type pushing device, characterized in that the pressure relief type pushing device comprises: A housing, the interior of which is partitioned by a partition plate to form a first chamber and a second chamber for accommodating a hydraulic medium, the partition plate having a flow port for communicating the first chamber and the second chamber; A hydraulic pump for driving the hydraulic medium through the flow port, from the first chamber into the second chamber; a driving assembly, which is partially positioned in the second cavity and is used for moving away from the partition plate under the driving of the hydraulic medium; And the reset piece is positioned in the second cavity and is in contact with the driving assembly and used for driving the driving assembly to move towards the direction close to the partition plate.
  2. 2. The pressure relief type pushing device according to claim 1, wherein the partition plate is further provided with a pressure relief opening, and an accommodating space is formed in the partition plate, and the pressure relief opening is positioned at two sides of the accommodating space and communicated with the accommodating space in the thickness direction of the partition plate; wherein, pressure release formula thrust unit still includes pressure release drive assembly, pressure release drive assembly includes: the pressure relief shaft is at least partially positioned in the accommodating space and is provided with a communication port; The pressure release driving piece is connected with the pressure release shaft and is used for driving the pressure release shaft moves in the accommodating space, and in the process of the movement of the pressure release shaft, the communication opening can enable the pressure release openings positioned on two sides of the accommodating space to be communicated.
  3. 3. The pressure relief pushing device according to claim 2, wherein the pressure relief driving member is configured to drive the pressure relief shaft to translate in a first direction, so as to change a communication state between the communication port and the pressure relief port, and the first direction is parallel to a length direction of the pressure relief shaft.
  4. 4. The pressure relief pushing device of claim 3, wherein the pressure relief driving assembly further comprises a threaded transmission structure, the pressure relief driving member is connected with the pressure relief shaft through the threaded transmission structure, wherein the pressure relief driving member is configured to output a rotational motion, and the threaded transmission structure is configured to convert the rotational motion into a linear motion and drive the pressure relief shaft to translate along the first direction; Or alternatively, the first and second heat exchangers may be, The pressure relief driving piece is directly connected with the pressure relief shaft to drive the pressure relief shaft to translate along the first direction.
  5. 5. The pressure relief pushing device according to claim 3 or 4, wherein the pressure relief shaft has a first limit structure, the accommodating space has a second limit structure therein, the second limit structure is fixed to an inner wall of the accommodating space, and the second limit structure abuts against the first limit structure to limit movement of the pressure relief shaft in directions other than the first direction.
  6. 6. The pressure relief pushing device according to claim 2, wherein the pressure relief driving member is configured to drive the pressure relief shaft to rotate so as to change a communication state between the communication port and the pressure relief port, and a rotation axis of the pressure relief shaft is parallel to a length direction of the pressure relief shaft.
  7. 7. The pressure relief pushing device of claim 6, wherein the pressure relief drive is directly coupled to a pressure relief shaft to drive rotation of the pressure relief shaft about the axis of rotation, Or alternatively, the first and second heat exchangers may be, The pressure relief driving assembly further comprises a rocker arm, one end of the rocker arm is connected with the pressure relief shaft, the other end of the rocker arm is rotationally connected with the pressure relief driving piece, the pressure relief driving piece is used for outputting linear motion, and the rocker arm is used for converting the linear motion into rotational motion and driving the pressure relief shaft to rotate; Or alternatively, the first and second heat exchangers may be, The pressure relief driving assembly further comprises a gear transmission assembly, wherein the pressure relief driving member is used for outputting rotary motion, and the gear transmission assembly is used for transmitting the rotary motion to the pressure relief shaft.
  8. 8. The pressure relief pushing device according to claim 6 or 7, wherein the pressure relief shaft has a third limit structure, a fourth limit structure is provided in the accommodating space, the fourth limit structure is fixed to an inner wall of the accommodating space, and the fourth limit structure abuts against the third limit structure to limit movement of the pressure relief shaft in other directions than rotation around the rotation axis.
  9. 9. The pressure relief pushing device of claim 2, wherein the pressure relief shaft comprises: The hollow shaft is provided with a first communication port; The thin shaft is positioned in the hollow shaft and can move relative to the hollow shaft, and the thin shaft is provided with a second communication port; The pressure release driving piece includes: the first driving piece is connected with the hollow shaft and used for driving the hollow shaft to move, and the first communication port can enable the pressure relief port to be communicated with the inner space of the hollow shaft in the process of moving the hollow shaft; The second driving piece is connected with the thin shaft and used for driving the thin shaft to move, and the second communication port can be communicated with the first communication port in the process of moving the thin shaft; And/or the number of the groups of groups, The driving piece is used for being connected with a parking brake operating rod and used for transmitting the motion of the parking brake operating rod to the pressure release shaft.
  10. 10. The pressure relief pushing device of claim 2, wherein the hydraulic pump is located within the first chamber; Or alternatively, the first and second heat exchangers may be, The hydraulic pump is located outside the shell and is communicated with the first cavity through a liquid inlet pipe and a liquid outlet pipe.
  11. 11. The pressure relief pushing device of claim 2, wherein the flow port has a one-way valve therein that allows the hydraulic medium to flow from the first chamber into the second chamber; The hydraulic pump is characterized in that a return passage is further arranged in the shell, the return passage is communicated with the first cavity and the second cavity, an overflow valve is arranged in the return passage, and the overflow valve allows the hydraulic medium to flow back from the second cavity to the first cavity when the hydraulic pressure in the second cavity is larger than a preset threshold value, so that the pressure in the second cavity is kept at a set pressure value when the hydraulic pump continuously operates.
  12. 12. A braking system, the braking system comprising: A braking device; The pressure relief pushing device of any one of claims 1 to 11, coupled to the braking device, for driving the braking device to generate a braking force; The pressure relief type pushing devices are respectively connected with one braking device, the part, extending out of the second cavity, of the driving component is used for driving a braking structure of the braking device to generate braking force, the braking force is reduced when the driving component moves in a direction away from the partition plate, and the braking force is increased when the driving component moves in a direction close to the partition plate.

Description

Pressure release type pushing device and braking system Technical Field The invention relates to the field of braking, in particular to a pressure release type pushing device and a braking system. Background In the motion device, the motion device needs to be pushed by a pushing device, particularly, a braking system of the motion device needs to stop motion parts timely according to requirements, and particularly, in the running process of a vehicle, the rotation of wheels needs to be braked by the braking device, so that the vehicle stops timely according to the intention of a driver. The structure of the associated pushing device is relatively complex. Disclosure of Invention In order to solve the above technical problems, the present invention provides a pressure relief type pushing device and a braking system, so as to simplify the structure of the pushing device and improve the reliability of the braking system. The embodiment of the invention provides a pressure relief type pushing device which comprises a shell, a hydraulic pump, a driving assembly and a reset piece, wherein a first cavity and a second cavity are formed in the shell through separation of a partition plate, the first cavity and the second cavity are used for containing hydraulic media, the partition plate is provided with a circulation port used for communicating the first cavity and the second cavity, the hydraulic pump is used for driving the hydraulic media to flow into the second cavity through the circulation port from the first cavity, the driving assembly is partially positioned in the second cavity and used for moving in a direction away from the partition plate under the driving of the hydraulic media, and the reset piece is positioned in the second cavity and is in contact with the driving assembly and used for driving the driving assembly to move in a direction close to the partition plate. In some embodiments, the partition plate is further provided with a pressure relief opening, an accommodating space is formed in the partition plate, the pressure relief opening is located at two sides of the accommodating space in the thickness direction of the partition plate and is communicated with the accommodating space, the accommodating space is isolated from the circulation opening, the pressure relief pushing device further comprises a pressure relief driving assembly, the pressure relief driving assembly comprises a pressure relief shaft, at least part of the pressure relief shaft is located in the accommodating space, the pressure relief shaft is provided with a communication opening, and the pressure relief driving assembly is connected with the pressure relief shaft and used for driving the pressure relief shaft to move in the accommodating space, and in the process of movement of the pressure relief shaft, the communication opening can enable the pressure relief openings located at two sides of the accommodating space to be communicated. In some embodiments, the pressure relief driving member is configured to drive the pressure relief shaft to translate in a first direction, so as to change a communication state between the communication port and the pressure relief port, where the first direction is parallel to a length direction of the pressure relief shaft. In some embodiments, the pressure relief driving assembly further comprises a thread transmission structure, and the pressure relief driving member is connected with the pressure relief shaft through the thread transmission structure, wherein the pressure relief driving member is used for outputting rotary motion, the thread transmission structure is used for converting the rotary motion into linear motion and driving the pressure relief shaft to translate along the first direction, or the pressure relief driving member is directly connected with the pressure relief shaft to drive the pressure relief shaft to translate along the first direction. In some embodiments, the pressure release shaft has a first limit structure, a second limit structure is arranged in the accommodating space, the second limit structure is fixed with the inner wall of the accommodating space, and the second limit structure is abutted with the first limit structure so as to limit the movement of the pressure release shaft in other directions except the first direction. In some embodiments, the pressure release driving member is configured to drive the pressure release shaft to rotate so as to change a communication state between the communication port and the pressure release port, and a rotation axis of the pressure release shaft is parallel to a length direction of the pressure release shaft. In some embodiments, the pressure relief driving piece is directly connected with the pressure relief shaft to drive the pressure relief shaft to rotate around the rotation axis, or the pressure relief driving assembly further comprises a rocker arm, one end of the rocker arm is connected with the pres