A mechanical locking and isolating device
By designing a mechanical locking isolation device with integrated locking, unlocking and isolation functions, the problem of rail transit train pedals being easily thrown out during turns and cannot be automatically retracted in emergencies, achieving improved safety and convenience.
Patent Information
- Application Number
- CN202011162125.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2020-10-27
- Publication Date
- 2025-07-01
- Estimated Expiration
- 2040-10-27
AI Technical Summary
The movable pedals of existing rail transit trains are easily thrown out during turns and cannot be automatically retracted in an emergency, which poses safety hazards and is inconvenient to operate.
A mechanical locking isolation device is designed, including a mechanical lock hook, an isolation lock hook and a mechanical lock stop. Through the coordination of the mechanical lock hook reset torsion spring and the stop reset torsion spring, the automatic locking and isolation of the pedal is achieved.
It effectively avoids the safety hazards caused by the pedal being thrown out in an emergency, simplifies the operation process, reduces costs, and improves the safety and convenience of the pedal.
Smart Images
Figure CN112208560B_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to a mechanical locking and isolating device, belonging to the technical field of vehicle device design. Background Art
[0002] The movable pedals on existing rail transit trains usually have electric brakes. When a rail transit train with pedals turns, the pedals will be subject to centrifugal force. If the electric brake fails or the transmission system malfunctions, the pedals will be thrown out of the vehicle, and once the train enters a high platform, an accident will occur.
[0003] In case of an emergency, such as a power outage or a malfunction, the pedals cannot be automatically retracted. To ensure the normal operation of the vehicle, manual operation or isolation of the pedals is required; if the pedals are not in place and the isolation operation is mistakenly performed, resulting in the pedals not being mechanically isolated, there will be potential safety hazards. Therefore, manual confirmation of the isolation state is required, and the operation is inconvenient.
[0004] Separate locking devices, unlocking devices, and isolating devices are large in volume and not conducive to the arrangement of the pedals inside the train. At the same time, due to the large number of components and complex structure, the cost is high and the operation is not convenient. Summary of the Invention
[0005] Objective: To overcome the problems existing in the prior art that existing rail transit trains usually use a single braking method to keep the pedals in the retracted state, there are potential safety hazards, manual operation or isolation of the pedals is inconvenient, and manual confirmation of the isolation state is required, which poses a safety hazard. The present invention provides a mechanical locking and isolating device.
[0006] Technical Solution: To solve the above technical problems, the technical solution adopted by the present invention is as follows:
[0007] A mechanical locking and isolating device includes: a mechanical locking hook, an isolating locking hook, and a mechanical locking stop. A mechanical locking hook return torsion spring is arranged inside the mechanical locking hook, and a mechanical locking hook mounting shaft is sleeved inside the mechanical locking hook return torsion spring. The mechanical locking hook rotates in a first rotation direction under the action of the mechanical locking hook return torsion spring; the lower edge of the mechanical locking hook contacts one end of the mechanical locking stop, and a flange is arranged on the mechanical locking hook. When the mechanical locking hook is in the locked state, the mechanical locking hook is engaged with a lock catch. A stop return torsion spring is arranged inside the mechanical locking stop, and a stop mounting shaft is sleeved inside the stop return torsion spring. An unlocking wire rope disc is arranged at the top of the stop mounting shaft. The mechanical locking stop rotates in a second rotation direction under the action of the stop return torsion spring. An unlocking element is arranged at the other end of the mechanical locking stop, and a retractable hook is arranged on the unlocking element. The unlocking wire rope disc is connected to one end of a first unlocking steel wire rope, and the first unlocking steel wire rope drives the mechanical locking stop to rotate in the first rotation direction;
[0008] An isolation locking hook is provided with an isolation locking hook return torsion spring. An isolation locking hook mounting shaft is sleeved inside the isolation locking hook return torsion spring. An isolation cable pulley is arranged at the top of the isolation locking hook mounting shaft. The isolation locking hook rotates in the second rotation direction under the action of the isolation locking hook return torsion spring. The isolation cable pulley is connected to one end of an isolation steel wire rope. The isolation steel wire rope drives the isolation locking hook to rotate in the first rotation direction. In the isolation state, the isolation locking hook rotates in the first rotation direction and is engaged with the mechanical locking hook in the locked state.
[0009] As a preferred solution, it further includes a second unlocking steel wire rope. The unlocking cable pulley is also connected to the second unlocking steel wire rope. When the unlocking cable pulley rotates in the first rotation direction, it drives the second unlocking steel wire rope to pull back.
[0010] As a preferred solution, it further includes a locking switch and a disconnector switch. A locking switch is arranged on one side of the mechanical locking hook, and a disconnector switch is arranged on one side of the isolation locking hook. When the mechanical locking hook and the isolation locking hook are in the locked and isolated state, the locking switch and the disconnector switch are triggered.
[0011] As a preferred solution, it further includes a mounting bracket. The mechanical locking hook mounting shaft, the stop mounting shaft, the isolation locking hook mounting shaft, the locking switch, the disconnector switch, and the unlocking element are all arranged on the mounting bracket.
[0012] As a preferred solution, it further includes a limit groove and a first limiting element. A limit groove is arranged on the mechanical locking hook, and a first limiting element is arranged on the isolation locking hook. The first limiting element rotates synchronously with the isolation locking hook. When the mechanical locking hook is in the locked state, the free end of the first limiting element rotates along the limit groove until the mechanical locking hook is engaged with the isolation locking hook.
[0013] As a preferred solution, it further includes a hook and a second flange. A hook is arranged between the mechanical locking hook and the isolation locking hook. A torsion spring is arranged on the hook. A rotating shaft is sleeved inside the torsion spring. One end of the hook is in contact with the edge of the mechanical locking hook. The hook rotates in the first rotation direction under the action of the torsion spring. The other end of the hook is engaged with the second flange on the isolation locking hook. When the mechanical locking hook is locked, the other end of the hook is separated from the second flange of the isolation locking hook.
[0014] As a preferred solution, it further includes a first limiting bump and a second limiting bump. A first limiting bump is arranged on one side of the mechanical locking hook, and a second limiting bump is arranged on one side of the isolation locking hook. The first limiting bump is in contact with the second limiting bump. When the first limiting bump is in contact with the second limiting bump, the isolation locking hook cannot rotate in the first rotation direction. When the mechanical locking hook is locked, the first limiting bump is separated from the second limiting bump.
[0015] As a preferred solution, a limiting groove is provided on the mechanical locking hook, and a clamping portion matching the limiting groove is provided at the front end of the isolation locking hook. When the mechanical locking hook is in the locked state, the clamping portion of the isolation locking hook rotates along the limiting groove until the mechanical locking hook is clamped with the isolation locking hook.
[0016] Beneficial effects: A mechanical locking and isolating device provided by the present invention integrates the functions of a locking device, an unlocking device and an isolating device, and has the advantages of multiple functions, compact structure, convenient operation, low cost, etc. When the pedal brake fails or the transmission system fails, the pedal is kept in the retracted state through mechanical locking to avoid accidents caused by the pedal protruding outside the vehicle; when the pedal fails, it can be unlocked and then the pedal can be manually operated to retract in time without affecting the operation of the train; moreover, the pedal can be isolated only when it is in the received position, which has the function of preventing misoperation and can keep in the isolated position after isolation, improving the safety of the pedal, being convenient to use, and having good application prospects. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 is a schematic structural diagram of a mechanical locking and isolating device.
[0018] Figure 2 is a schematic structural diagram of a mechanical locking and isolating device without a wire drawing disc.
[0019] Figure 3 is a schematic diagram of the matching structure of a mechanical locking hook with a limit and an isolation locking hook.
[0020] Figure 4 is a schematic diagram of the matching structure of a mechanical locking hook with a hook and an isolation locking hook.
[0021] Figure 5 is a schematic diagram of the matching structure of a mechanical locking hook with a limit convex block and an isolation locking hook.
[0022] Figure 6 is a schematic diagram of the matching structure of a mechanical locking hook and an isolation locking hook with a special clamping portion.
[0023] Figure 7 is a schematic diagram of the locking and isolation of the lock catch on the movable pedal and this device. DETAILED DESCRIPTION OF THE INVENTION
[0024] The present invention will be further described below in conjunction with specific embodiments.
[0025] Such as Figure 1 、 Figure 2As shown in the figure, a mechanical locking and isolating device of the present invention includes: a mechanical locking hook 1, an isolating locking hook 2, and a mechanical locking stop 3. A mechanical locking hook return torsion spring 4 is arranged inside the mechanical locking hook 1, and a mechanical locking hook mounting shaft 5 is sleeved inside the mechanical locking hook return torsion spring 4. The mechanical locking hook 1 is kept rotating counterclockwise under the action of the mechanical locking hook return torsion spring 4, and the mechanical locking hook is in an open state when the mechanical locking hook return torsion spring is in a relaxed state; the lower edge of the mechanical locking hook contacts one end of the mechanical locking stop 3, and a flange 101 is arranged on the mechanical locking hook 1. After one end of the mechanical locking stop 3 is clamped with it, the mechanical locking hook and the mechanical locking stop are in a static state. When the mechanical locking hook is in a locked state, the mechanical locking hook is clamped with a buckle. A stop return torsion spring 6 is arranged inside the mechanical locking stop 3, and a stop mounting shaft 7 is sleeved inside the stop return torsion spring 6. An unlocking wire rope disc 8 is arranged at the top of the stop mounting shaft 7. The stop return torsion spring 6 is in a compressed state to keep the mechanical locking stop 3 rotating clockwise. An unlocking element 9 is arranged at the other end of the mechanical locking stop 3, and a retractable hook is arranged on the unlocking element 9. The unlocking wire rope disc is connected to one end of a first unlocking wire rope 10, and the first unlocking wire rope drives the mechanical locking stop to rotate counterclockwise.
[0026] An isolating locking hook 2 is arranged on one side of the mechanical locking hook 1. An isolating locking hook return torsion spring 11 is arranged inside the isolating locking hook 2, and an isolating locking hook mounting shaft 12 is sleeved inside the isolating locking hook return torsion spring 11. An isolating wire rope disc 13 is arranged at the top of the isolating locking hook mounting shaft 12. The isolating locking hook return torsion spring 11 is in a compressed state to keep the isolating locking hook 2 rotating clockwise. The isolating wire rope disc 13 is connected to one end of an isolating wire rope 14, and the isolating wire rope 14 drives the isolating locking hook to rotate counterclockwise. When the isolating wire rope is in an initial state, it overcomes the torsion of the isolating locking hook rotating clockwise to keep the isolating locking hook stationary. In an isolated state, the isolating locking hook rotates counterclockwise and is clamped with the mechanical locking hook in a locked state.
[0027] It further includes a second unlocking wire rope 15. The unlocking wire rope disc 8 is also connected to the second unlocking wire rope. When the unlocking wire rope disc rotates counterclockwise, it drives the second unlocking wire rope to pull back, which is used to pull the actuator at the end of the second unlocking wire rope. For example, if the actuator is set as an unlocking rotating bracket, it is used to pull the unlocking rotating bracket to open the motor brake key.
[0028] It further includes a locking switch 16 and an isolating switch 17. A locking switch 16 is arranged on one side of the mechanical locking hook 1, and an isolating switch 17 is arranged on one side of the isolating locking hook 2. When the mechanical locking hook and the isolating locking hook are in a locked and isolated state, the locking switch 16 and the isolating switch 17 are triggered.
[0029] It further includes a mounting bracket 18. The mechanical locking hook mounting shaft, the stop mounting shaft, the isolating locking hook mounting shaft, the locking switch, the isolating switch, and the unlocking element are all arranged on the mounting bracket 18.
[0030] Embodiment 1:
[0031] As Figure 3 shown, the mechanical locking hook 1 further includes a limiting groove 102, and the isolating locking hook 2 further includes a first limiting element 201. A limiting groove is provided on the mechanical locking hook, and a first limiting element is provided on the isolating locking hook. The first limiting element rotates synchronously with the isolating locking hook. When the mechanical locking hook is in the locked state, the free end of the first limiting element rotates along the limiting groove until the mechanical locking hook is engaged with the isolating locking hook. The structure in which the limiting groove cooperates with the first limiting element is used to ensure that the mechanical locking hook and the buckle are locked in place, and at the same time, the isolating locking hook will not act erroneously.
[0032] Embodiment 2:
[0033] As Figure 4 shown, it further includes a hook 19, and the isolating locking hook 2 further includes a second flange 202. A hook 19 is provided between the mechanical locking hook 1 and the isolating locking hook 2. A torsion spring is provided on the hook 19, and a rotating shaft is sleeved inside the torsion spring. One end of the hook is in contact with the edge of the mechanical locking hook. The hook rotates counterclockwise under the action of the torsion spring, and the other end of the hook is engaged with the second flange on the isolating locking hook 2. When the mechanical locking hook is locked, it drives the hook to rotate clockwise against the torsion force, and the other end of the hook is separated from the second flange of the isolating locking hook. At this time, the isolating locking hook has no limit and can be engaged with the mechanical locking hook to enter the isolation state. It is used to ensure that the mechanical locking hook and the buckle are locked in place, and at the same time, the isolating locking hook will not act erroneously.
[0034] Embodiment 3:
[0035] As Figure 5 shown, the mechanical locking hook 1 further includes a first limiting protrusion 102, and the isolating locking hook 2 further includes a second limiting protrusion 203. A first limiting protrusion is provided on one side of the mechanical locking hook, and a second limiting protrusion is provided on one side of the isolating locking hook. The first limiting protrusion is in contact with the second limiting protrusion. When the first limiting protrusion is in contact with the second limiting protrusion, the isolating locking hook cannot rotate counterclockwise. When the mechanical locking hook is locked, the first limiting protrusion is separated from the second limiting protrusion, and the isolating locking hook has no limit and can be engaged with the mechanical locking hook to enter the isolation state. It is used to ensure that the mechanical locking hook and the buckle are locked in place, and at the same time, the isolating locking hook will not act erroneously.
[0036] Embodiment 4:
[0037] As Figure 6 shown, a limiting groove is provided on the mechanical locking hook 1, and a clamping portion cooperating with the limiting groove is provided at the front end of the isolating locking hook 2. When the mechanical locking hook is in the locked state, the clamping portion of the isolating locking hook rotates along the limiting groove until the mechanical locking hook is engaged with the isolating locking hook. The structure in which the limiting groove cooperates with the clamping portion is used to ensure that the mechanical locking hook and the buckle are locked in place, and at the same time, the isolating locking hook will not act erroneously.
[0038] As shown Figure 7 in the figure, the working process of a mechanical locking and isolating device is as follows:
[0039] The rotation direction of rotating the mechanical locking hook to unlock it from the locking buckle 01 is defined as the first rotation direction, and the rotation direction opposite to the first rotation direction is defined as the second rotation direction. In this embodiment, the first rotation direction is counterclockwise rotation, and the second rotation direction is clockwise rotation. When the movable pedal is retracted, in the final stage, the locking buckle 01 installed at the rear of the movable pedal contacts the mechanical locking hook and drives the mechanical locking hook to rotate. The mechanical locking hook slides along the upper end of the mechanical locking stop. When it rotates to a certain angle, the upper end of the mechanical locking stop cooperates with the rear flange of the mechanical locking hook to be clamped, and rotates under the action of the torsion spring in the mechanical locking stop until the mechanical locking hook and the mechanical locking stop are stationary, which is used to prevent the mechanical locking hook from rotating in the reverse direction and play a limiting role on the movable pedal.
[0040] When the pedal is opened, the unlocking element drives the hook to retract, and the mechanical locking stop rotates to release the clamping limit between the flange of the mechanical locking hook and the mechanical locking stop. The mechanical locking hook rotates under the action of its own torsion spring and the drive of the locking buckle to release the locked state.
[0041] When the unlocking element fails to work, pull the first unlocking steel wire rope to drive the unlocking wire rope disc to rotate counterclockwise against the torsion of the torsion spring, release the clamping limit between the flange of the mechanical locking hook and the mechanical locking stop. The unlocking wire rope disc pulls the end of the second unlocking steel wire rope, and the unlocking bracket rotates counterclockwise along the top, driving the motor brake key to open, and the motor is in a free state, and the movable pedal can be manually extended or retracted.
[0042] In the open state of the movable pedal, the isolating locking hook, under the action of its torsion spring, cooperates with the tension of the isolating steel wire rope to maintain a stationary state, and is limited by the mechanical locking hook and cannot rotate to isolate. When the movable pedal is retracted, the mechanical locking hook rotates to release the limit of the isolating locking hook, and pulls the isolating steel wire rope to drive the isolating locking hook under the isolating wire rope disc to rotate against the torsion of the torsion spring and engage with the mechanical locking hook to complete the isolation state. After the movable pedal is isolated, it cannot be opened electrically or manually.
[0043] When the isolation state needs to be released, loosen the isolating steel wire rope to the initial tension, and the isolating locking hook rotates clockwise under the action of its torsion spring and disengages from the mechanical locking hook until the isolating locking hook maintains a stationary state.
[0044] In summary, a mechanical locking and isolation device of the present invention can be used for rail transit trains. When the pedal brake fails or the transmission system fails, the pedal is mechanically locked in the retracted state to prevent the pedal from extending outside the vehicle and causing accidents. When the pedal malfunctions, it can be unlocked and then manually operated to retract the pedal in a timely manner. Moreover, the pedal can only be isolated when it is in the fully retracted position, which has the function of preventing misoperation and can maintain the isolated position after isolation, improving the safety of the pedal, facilitating use, and having good application prospects.
[0045] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present invention.
Claims
1. A mechanical locking and isolating device, comprising: Mechanical locking hook, isolating locking hook, mechanical locking stop, characterized in that: the rotation direction for unlocking the mechanical locking hook after rotation is defined as the first rotation direction, and the rotation direction opposite to the first rotation direction is defined as the second rotation direction. A mechanical locking hook return torsion spring is arranged on the mechanical locking hook, and a mechanical locking hook mounting shaft is sleeved inside the mechanical locking hook return torsion spring. The mechanical locking hook rotates in the first rotation direction under the action of the mechanical locking hook return torsion spring; the lower edge of the mechanical locking hook contacts one end of the mechanical locking stop. A flange is arranged on the mechanical locking hook, a stop return torsion spring is arranged inside the mechanical locking stop, a stop mounting shaft is sleeved inside the stop return torsion spring, and an unlocking wire pulley is arranged at the top of the stop mounting shaft. The mechanical locking stop rotates in the second rotation direction under the action of the stop return torsion spring. An unlocking element is arranged at the other end of the mechanical locking stop, and a retractable hook is arranged on the unlocking element. The unlocking wire pulley is connected to one end of the first unlocking steel wire rope, and the first unlocking steel wire rope drives the mechanical locking stop to rotate in the first rotation direction; An isolating locking hook return torsion spring is arranged inside the isolating locking hook, and an isolating locking hook mounting shaft is sleeved inside the isolating locking hook return torsion spring. An isolating wire pulley is arranged at the top of the isolating locking hook mounting shaft. The isolating locking hook rotates in the second rotation direction under the action of the isolating locking hook return torsion spring. The isolating wire pulley is connected to one end of the isolating steel wire rope, and the isolating steel wire rope drives the isolating locking hook to rotate in the first rotation direction. In the isolating state, the isolating steel wire rope drives the isolating locking hook to rotate in the first rotation direction and is clamped with the mechanical locking hook in the locked state.
2. The mechanical locking and isolating device according to claim 1, characterized in that: It further includes a second unlocking steel wire rope, and the unlocking wire pulley is also connected to the second unlocking steel wire rope. When the unlocking wire pulley rotates in the first rotation direction, it drives the second unlocking steel wire rope to be pulled back.
3. A mechanical locking and isolating device according to claim 1, characterized in that: It further includes a locking switch and a disconnecting switch. A locking switch is arranged on one side of the mechanical locking hook, and a disconnecting switch is arranged on one side of the isolating locking hook. When the mechanical locking hook and the isolating locking hook are in the locked and isolated state, the locking switch and the disconnecting switch are triggered.
4. A mechanical locking and isolating device according to claim 1, characterized in that: It further includes a mounting bracket, and the mechanical locking hook mounting shaft, the stop mounting shaft, the isolating locking hook mounting shaft, the locking switch, the disconnecting switch, and the unlocking element are all arranged on the mounting bracket.
5. A mechanical locking and isolating device according to any one of claims 1-4, characterized in that: It further includes a limiting groove and a first limiting element. A limiting groove is arranged on the mechanical locking hook, and a first limiting element is arranged on the isolating locking hook. The first limiting element rotates synchronously with the isolating locking hook. When the mechanical locking hook is in the locked state, the free end of the first limiting element rotates along the limiting groove until the mechanical locking hook is clamped with the isolating locking hook.
6. A mechanical locking and isolating device according to any one of claims 1-4, characterized in that: It further includes a hook and a second flange. A hook is arranged between the mechanical locking hook and the isolating locking hook. A torsion spring is arranged on the hook, and a rotating shaft is sleeved inside the torsion spring. One end of the hook contacts the edge of the mechanical locking hook. The hook rotates in the first rotation direction under the action of the torsion spring. The other end of the hook is clamped with the second flange on the isolating locking hook. When the mechanical locking hook is locked, the other end of the hook is separated from the second flange of the isolating locking hook.
7. A mechanical locking and isolating device according to any one of claims 1-4, characterized in that: It further includes a first limiting bump and a second limiting bump. The first limiting bump is arranged on one side of the mechanical locking hook, and the second limiting bump is arranged on one side of the isolation locking hook. The first limiting bump is in contact with the second limiting bump. When the first limiting bump is in contact with the second limiting bump, the isolation locking hook cannot rotate in the first rotation direction. When the mechanical locking hook is locked, the first limiting bump is separated from the second limiting bump.
8. A mechanical locking and isolating device according to any one of claims 1-4, characterized in that: A limiting groove is arranged on the mechanical locking hook, and a clamping portion matching with the limiting groove is arranged at the front end of the isolation locking hook. When the mechanical locking hook is in the locked state, the clamping portion of the isolation locking hook rotates along the limiting groove until the mechanical locking hook is clamped with the isolation locking hook.
Citation Information
Patent Citations
Mechanical locking isolation device
CN213831680U