Parking brake release handle and linkage brake device

Abstract

The utility model discloses a parking brake release handle and a linkage brake device. The parking brake release handle comprises a pull rope device, a protective shell, a handle part and a bolt part, the bottom end of the handle part is connected with the head end of the rope pulling device; the linkage brake device comprises a parking brake release handle and a linkage device, and a brake line extending out of the tail end of a pull rope device of the parking brake release handle is connected with the linkage device. According to the parking brake release handle and the linkage brake device, the pull rope device is matched with the handle part, so that the brake operation is simpler and more convenient, and whether the operation is completed or not can be intuitively judged according to the stretching length of the handle part. The wrapping design of the corrugated pipe effectively prevents water and moisture, and the service life is prolonged. Due to the arrangement of the linkage device, an operator can flexibly complete braking operation indoors and outdoors, it is ensured that the excellent braking effect of the vehicle can be kept in various environments, and therefore the safety and convenience of operation are improved.

Description

Technical Field

[0001] The utility model relates to a parking brake release handle and a linkage braking device, belonging to the technical field of rail transit engineering. Background Technique

[0002] In modern rail transit systems, the subway, as an important public transportation vehicle, undertakes the urban travel demand. To ensure passenger safety and improve operation efficiency, the design of the braking system is crucial. The parking brake ensures that the train does not slide when parked at a station, and the parking brake release handle is an indispensable part of this system.

[0003] At present, the parking brake release handle applied to the subway ensures the stable stay of the train when parked by applying additional braking force, preventing accidental movement, especially under conditions of slopes or uneven tracks. However, during use, the operation method is relatively single. When the air pressure of the subway train is insufficient and the parking brake is applied, the operator must move outdoors and onto the track to manually release it. It is impossible to flexibly operate the parking brake release handle at multiple positions in the car control room or outdoors, which reduces the convenience of daily use. In addition, after the current parking brake release handle is used for a period of time, it often responds slowly or even malfunctions because the subway environment is generally humid and dark. Therefore, the handle must have a good waterproof and moisture-proof structure to ensure the flexibility and reliability of operation. At the same time, the design of the parking brake release handle also lacks a real-time feedback mechanism, making it impossible for the crew to confirm the braking state in time after operation, increasing the risk of misoperation.

[0004] Therefore, it is necessary to design a new type of parking brake release handle and a linkage braking device, which can meet the flexible operation at multiple positions in the car control room or outdoors, and at the same time have good waterproof, moisture-proof and dust-proof effects, and the braking state can be confirmed in time after operation to meet the requirements of the subway train for flexibility, reliability and safety in parking braking. Content of the Utility Model

[0005] Therefore, the purpose of the utility model is to provide a parking brake release handle and a linkage braking device with convenient and flexible operation.

[0006] To achieve the above object, a parking brake release handle of the present utility model includes a cable device, a protective housing, a handle portion, and a pin portion; the bottom end of the handle portion is connected to the head end of the cable device; the handle portion includes a pulling handle, a handle shaft, and a bellows, the pulling handle is connected to the top of the handle shaft, and a first through hole is provided at the top end of the pulling handle; the outer wall of the handle shaft is provided with a bellows, and the bellows wraps the handle shaft; a second through hole corresponding to the first through hole is provided at the top end of the protective housing, and the base of the protective housing is connected to the bottom end of the handle shaft; the pin portion is provided with a pin, and the pin sequentially passes through the first through hole and the second through hole to fix the position of the handle portion.

[0007] A limiting position is provided at a position on the outer wall of the protective housing close to the second through hole to limit the position of the pulling handle.

[0008] The pin portion is provided with a fixing hook, one end of the fixing hook is connected to the pin, and the other end is fixed to the outer wall of the protective housing.

[0009] The pin portion is further provided with an anti-detachment rope, and both ends of the anti-detachment rope are respectively connected to the pin and the protective housing.

[0010] The handle portion is further provided with a tension band, and the tension band is arranged on the outer wall at the bottom of the bellows.

[0011] The protective housing is a fork-shaped member.

[0012] A linkage braking device includes two parking brake release handles and a linkage device. The two parking brake release handles are respectively a first parking brake release handle and a second parking brake release handle. The tail end of the cable device of the first parking brake release handle extends out of the indoor brake line and is connected to the linkage device. The tail end of the cable device of the second parking brake release handle extends out of the outdoor brake line and is connected to the linkage device; the linkage device includes a housing, a pulley, and a branch joint; the housing is provided with a first opening, a second opening, and a feedback outlet; the pulley is arranged on the inner wall of the housing, the indoor brake line enters the housing through the first opening, passes through the pulley and extends to the branch joint; the outdoor brake line enters the housing through the second opening, passes through the pulley and extends to the branch joint.

[0013] There are multiple pulleys.

[0014] The pulleys are evenly arranged on the inner wall of the first opening, the inner wall of the second opening, and the inner wall close to the input end side of the branch joint.

[0015] The branch joint is a three-way connector that integrates the indoor brake line and the outdoor brake line.

[0016] With the above technical solution, the parking brake release handle and the linkage braking device of the present utility model, through the cooperation of the cable device and the handle part, make the braking operation more convenient, and the operation completion can be visually judged by the stretching length of the handle part. At the same time, the design of the fixed hook of the pin part and the anti-disengagement rope further improves the safety of the device, ensuring that the pin will not accidentally fall off during use and avoiding misoperation. In addition, the wrapping design of the bellows effectively prevents water and moisture, extending the service life. The setting of the linkage device enables the operator to flexibly complete the braking operation indoors and outdoors, ensuring that the vehicle can maintain excellent braking performance in various environments, thereby improving the safety and convenience of the operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 FIG. is a schematic structural view of the parking brake release handle of the present utility model.

[0018] Figure 2 FIG. is a schematic structural view of the linkage device of the present utility model.

[0019] Figure 3 FIG. is a schematic structural view of the linkage braking device of the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] The present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0021] As Figures 1-3 shown, a parking brake release handle of the present utility model includes a cable device 6, a protective shell 4, a handle part 5, and a pin part 8; the bottom end of the handle part 5 is connected to the head end of the cable device 6; the handle part 5 includes a pulling handle 51, a handle shaft 53, and a bellows 52, the pulling handle 51 is connected to the top of the handle shaft 53, and a first through hole 17 is provided at the top end of the pulling handle 51; the outer wall of the handle shaft 53 is provided with a bellows 52, and the bellows 52 wraps the handle shaft 53; a second through hole 16 corresponding to the first through hole 17 is provided at the top end of the protective shell 4, and the base of the protective shell 4 is connected to the bottom end of the handle shaft 53; the pin part 8 is provided with a pin 81, and the pin 81 passes through the first through hole 17 and the second through hole 16 in sequence to fix the position of the handle part 5.

[0022] A limit position 7 is provided at a position on the outer wall of the protective shell 4 close to the second through hole 16 for restricting the position of the pulling handle 51, ensuring the stability and accuracy of the pulling handle 51.

[0023] The latch part 8 is provided with a fixed hook 83. One end of the fixed hook 83 is connected to the latch 81, and the other end is fixed to the outer wall of the protective shell 4. The latch part 8 is also provided with an anti - detachment rope 82. Two ends of the anti - detachment rope 82 are respectively connected to the latch 81 and the protective shell 4, and the anti - detachment rope 82 is fixed to the protective shell 4 by bolts. This further enhances the safety of the device, ensures that the latch 81 will not accidentally fall off during use, thereby improving the reliability of the overall structure and preventing misoperation.

[0024] The handle part 5 is also provided with a tension band 54. The tension band 54 is arranged on the outer wall at the bottom of the corrugated pipe 52, increasing the stability of the handle part 5 and reducing looseness caused by vibration or external force.

[0025] The protective shell 4 is a fork - shaped part. The fork - shaped design provides better supporting force, increases the stability of the overall structure, reduces the risk of shaking and deviation during use, and can also better wrap and protect the internal mechanical structure, providing better hand support for the operator during operation and increasing the comfort and sense of security of operation.

[0026] A linkage braking device includes two parking brake release handles and a linkage device 3. The two parking brake release handles are respectively a first parking brake release handle 1 and a second parking brake release handle 2. The tail end of the rope device 6 of the first parking brake release handle 1 extends out of the indoor brake line 14 and is connected to the linkage device 3. The tail end of the rope device 6 of the second parking brake release handle 2 extends out of the outdoor brake line 15 and is connected to the linkage device 3. The linkage device 3 includes a housing 13, a pulley 11, and a branch joint 12. The housing 13 is provided with a first opening 9, a second opening 10, and a feedback outlet 18. The pulley 11 is arranged on the inner wall of the housing 13. The indoor brake line 14 enters the housing 13 through the first opening 9, passes through the pulley 11 and extends to the branch joint 12. The outdoor brake line 15 enters the housing 13 through the second opening 10, passes through the pulley 11 and extends to the branch joint 12. The setting of the linkage device 3 enables the flexible integration of the indoor and outdoor brake lines, improves the response speed and flexibility of the braking system, and ensures that the vehicle can maintain good braking performance in various environments.

[0027] There are multiple pulleys 11. The pulleys 11 are evenly arranged on the inner wall of the first opening 9, the inner wall of the second opening 10, and the inner wall near the input end of the branch joint 12. The design of multiple pulleys 11 can disperse the load, making the transmission of the brake line smoother, reducing frictional losses, and improving the overall efficiency. At the same time, the evenly distributed pulleys 11 can provide a more stable operation experience, reduce the sense of jamming during operation, and improve the operation comfort of the operator.

[0028] The branch joint 12 is a tee connector that integrates the indoor brake line 14 and the outdoor brake line 15. The operator only needs to manage one connection point, reducing the complexity and time of operation. Moreover, the tee connector provides a more stable connection method, reducing the risk of failures caused by poor connections and improving the reliability of the overall system.

[0029] During use, the operator disengages the fixed hook 83 and pulls out the pin 81 to unlock the handle portion 5. Then, by pulling the handle portion 5, the cable pulling device 6 gives a feedback. The feedback command enters the linkage device 3 through the brake line, is uniformly received at the branch joint 12, and then the brake command is transmitted out through the feedback outlet 18 to complete the braking operation. This operation can be performed both indoors and outdoors.

[0030] With the above technical solution, for the parking brake release handle and the linkage braking device of the present utility model, through the cooperation of the cable pulling device 6 and the handle portion 5, the braking operation is made more convenient, and it is possible to intuitively judge whether the operation is completed by the stretching length of the handle portion 5. At the same time, the design of the fixed hook 83 of the pin portion 8 and the anti-disengagement rope 82 further improves the safety of the device, ensuring that the pin 81 will not accidentally fall off during use and avoiding misoperation. In addition, the wrapping design of the corrugated pipe 52 effectively prevents water and moisture, extending the service life. The setting of the linkage device 3 enables the operator to flexibly complete the braking operation indoors and outdoors, ensuring that the vehicle can maintain excellent braking performance in various environments, thereby enhancing the safety and convenience of the operation.

[0031] Obviously, the above embodiments are only examples given for clear illustration and are not limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation manners here. The obvious changes or modifications derived therefrom are still within the protection scope of the present utility model.

Claims

1. A parking brake release handle, characterized in that: It includes a drawstring device, a protective shell, a handle part, and a bolt part; the bottom end of the handle part is connected to the head end of the drawstring device; the handle part includes a pulling handle, a handle shaft, and a corrugated pipe. The pulling handle is connected to the top of the handle shaft, and a first through hole is provided at the top end of the pulling handle; a corrugated pipe is provided on the outer wall of the handle shaft, and the corrugated pipe wraps the handle shaft; a second through hole corresponding to the first through hole is provided at the top end of the protective shell, and the base of the protective shell is connected to the bottom end of the handle shaft; the bolt part is provided with a bolt, and the bolt passes through the first through hole and the second through hole in sequence to fix the position of the handle part.

2. The parking brake release handle according to claim 1, characterized in that: A limit position is provided at a position on the outer wall of the protective shell close to the second through hole to limit the position of the pulling handle.

3. The parking brake release handle according to claim 1, wherein: The bolt part is provided with a fixed hook, one end of the fixed hook is connected to the bolt, and the other end is fixed to the outer wall of the protective shell.

4. The parking brake release handle according to claim 1, wherein: The bolt part is further provided with an anti - detachment rope, and both ends of the anti - detachment rope are respectively connected to the bolt and the protective shell.

5. The parking brake release handle according to claim 1, wherein: The handle part is further provided with a tension band, and the tension band is arranged on the outer wall at the bottom of the corrugated pipe.

6. The parking brake release handle according to claim 1, wherein: The protective shell is a fork - shaped part.

7. A linkage braking device, characterized in that: It includes two parking brake release handles as described in any one of claims 1 - 6 and a linkage device. The two parking brake release handles are respectively a first parking brake release handle and a second parking brake release handle. The tail end of the drawstring device of the first parking brake release handle extends out of the indoor brake line and is connected to the linkage device, and the tail end of the drawstring device of the second parking brake release handle extends out of the outdoor brake line and is connected to the linkage device; the linkage device includes a housing, a pulley, and a branch joint; the housing is provided with a first opening, a second opening, and a feedback outlet; the pulley is arranged on the inner wall of the housing, the indoor brake line enters the housing through the first opening, passes through the pulley and extends to the branch joint; the outdoor brake line enters the housing through the second opening, passes through the pulley and extends to the branch joint.

8. The linkage braking device according to claim 7, characterized in that: There are multiple pulleys.

9. The linkage braking device according to claim 7, characterized in that: The pulleys are evenly arranged on the inner wall of the first opening, the inner wall of the second opening, and the inner wall close to the input end side of the branch joint.

10. The interlocking braking device according to claim 7, characterized in that: The branch joint is a three - way connector that integrates the indoor brake line and the outdoor brake line.

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