Tail-section pedal folding and automatic releasing device for rail transit
By combining a locking hook, hinge shaft, and torsion spring, the automatic folding and release of the last section of the tread is achieved, solving the problems of complex structure and heavy weight of existing devices, and improving the emergency evacuation performance and ease of use of rail transit train door systems.
Patent Information
- Application Number
- CN202423302567.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-31
- Publication Date
- 2025-11-04
- Estimated Expiration
- 2034-12-31
AI Technical Summary
In existing rail transit train door systems, the folding and release devices of the evacuation ramp end section treads are complex and heavy, making it difficult to meet customers' lightweight requirements.
It adopts a combination structure of locking hook, hinge shaft and torsion spring. The locking hook swings and slides on the locking hook pin to realize the automatic folding and release of the last pedal. The locking hook is equipped with a buckle to lock the last pedal. The beveled guide surface design of the locking hook ensures smooth operation.
It achieves a simple structure, convenient use, and safe and reliable folding and release of the end-section pedal, meeting emergency evacuation needs, reducing the weight and maintenance costs of the device, and improving the safety and scope of use of the emergency evacuation door system.
Smart Images
Figure CN223508263U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of rail vehicle door systems, and more particularly to a folding and automatic release device for the end section tread of rail transit. Background Technology
[0002] Currently, in rail transit train door systems, the folding and release device of the last section of the evacuation ramp has a complex structure and heavy weight, making it difficult to meet customers' requirements for lightweight design.
[0003] Therefore, it is necessary to develop a new type of folding and automatic release device for the final pedal. Utility Model Content
[0004] Purpose of the utility model: In view of the shortcomings and defects of the existing technology, this utility model provides a folding and automatic release device for the last section of the tread in rail transit. It has a simple structure, is easy to use, safe and reliable, and meets the new requirements of customers for high versatility, low cost and convenient maintenance. It also improves the safety, reliability and application range of the emergency evacuation door system ramp.
[0005] Technical solution: The present invention relates to a folding and automatic release device for the last section of a rail transit tread, characterized in that: it includes a locking hook, the elongated hole at the lower end of the locking hook passes through the locking hook pin, the locking hook is mounted on the inner side wall of the longitudinal beam of the ramp tread via a locking hook support, and the locking hook swings and slides on the locking hook pin; the ramp tread and the last section of the tread are connected by several hinge shafts and torsion springs.
[0006] The ramp treads include several foldable treads.
[0007] The torsion spring is twisted around the hinge axis.
[0008] The locking hook is equipped with a buckle for securing the last pedal section.
[0009] The protruding, beveled guide surface of the locking hook is lower than that of the last pedal section.
[0010] The last tread plate is located on the train door system.
[0011] The train door system mentioned above is a rail transit train door system.
[0012] Beneficial Effects: Compared with existing technologies, this utility model has the following significant advantages: It features a simple structure, convenient use, and high safety and reliability, meeting the new demands of customers for high versatility, low cost, and convenient maintenance. It improves the safety, reliability, and application range of emergency evacuation door system ramps. It meets the requirements for the retraction and release of the final section of the emergency evacuation ramp, has minimal impact on existing rail vehicle emergency evacuation doors during installation and use, and can safely and quickly complete the deployment and release of the ramp in emergency escape situations, ensuring rapid evacuation of personnel. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the structure of the present invention in its unfolded state;
[0014] Figure 2 This is a partial structural diagram of the unfolded state of this utility model. Figure 1 ;
[0015] Figure 3 This is a partial structural diagram of the unfolded state of this utility model. Figure 2 ;
[0016] Figure 4 This is a partial structural diagram of the folded state of this utility model. Figure 1 ;
[0017] Figure 5 This is a partial structural diagram of the folded state of this utility model. Figure 2 ;
[0018] Figure 6 This is a partial structural diagram of the folded state of this utility model. Figure 3 ;
[0019] Figure 7 This is a partial structural diagram of the folded state of this utility model. Figure 4 ;
[0020] In the diagram, 1 is the locking hook; 2 is the ramp pedal; 3 is the hinge shaft; 4 is the end pedal; 5 is the torsion spring; 6 is the locking hook support; 7 is the locking hook pin; and 8 is the pedal. Detailed Implementation
[0021] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.
[0022] This utility model discloses a folding and automatic release device for the final section of a rail transit tread, comprising a locking hook 1. A long, narrow hole at the lower end of the locking hook 1 passes through a locking hook pin 7. The locking hook 1 is mounted on the inner wall of the longitudinal beam of the ramp tread 2 via a locking hook support 6. The locking hook 1 swings and slides on the locking hook pin 7. The ramp tread 2 and the final section tread 4 are connected by several hinge pins 3 and torsion springs 5. The ramp tread 2 includes several foldable treads 8. The torsion springs 5 twist around the hinge pins 3. The locking hook 1 has a latch for securing the final section tread 4. The protruding, beveled guide surface of the locking hook 1 is lower than the final section tread 4. The final section tread 4 is located on the train door system. The train door system is a rail transit train door system.
[0023] In use, the elongated hole at the lower end of the locking hook 1 passes through the locking hook pin 7 and is mounted on the inner wall of the longitudinal beam of the ramp pedal 2 via the locking hook support 6. The locking hook 1 can swing slightly and slide up and down slightly on the locking hook pin 7. Under the vehicle, manually fold the last pedal 4 so that the torsion spring 5 stores energy after twisting around the hinge axis 3 until the last pedal 4 rotates about 180° and approaches the ramp pedal 2. At this time, manually pull up the locking hook 1 and make the locking hook 1 swing and rotate until the latch of the locking hook 1 locks the last pedal 4, so that the last pedal 4 is in contact with the ramp pedal 2, completing the stable folding of the last pedal 4.
[0024] The operator climbs the ramp and enters the vehicle. Inside, the operator operates the recovery ramp, which begins to fold and retract. Pedal 8 flips and folds 180°, colliding with the beveled surface of the locking hook 1 on the final pedal 4. Under the pressure of the beveled surface, the locking hook 1 disengages from the final pedal 4. The locking hook 1 can then swing and slide along the locking hook pin 7 to the bottom of the groove. The protruding beveled guide surface of the locking hook 1 is lower than the final pedal 4. The ramp folding pedal 8 presses down on the final pedal 4, and recovery continues until the ramp is fully retracted.
[0025] Inside the vehicle, the ramp is released, and the folding pedal 8 of the ramp gradually unfolds and rises. The last pedal 4 automatically flips and unfolds under the action of the torsion spring 5. This structural design allows for manual folding under the vehicle, unlocking during onboard retrieval, and automatic unfolding of the last pedal when the ramp is released onboard. Due to its compact mechanical structure, simple operation, clear logic, and safety and reliability, it has significant value in rail transit train door systems.
[0026] This invention allows for manual operation, with the locking hook 1 engaging the final pedal 4, enabling manual folding and locking of the final pedal 4 from below the vehicle. During the operation of retracting the ramp from inside the vehicle, the locking hook 1 is unlocked, disengaging and falling, simultaneously pressing down on the final pedal 4 through the ramp's folding mechanism, thus preventing its repositioning. During the operation of releasing the ramp from inside the vehicle, the final pedal 4 automatically unfolds as the ramp is released. The structure is simple and easy to operate; it is suitable for emergency evacuation ramps on tracks and has minimal impact on the dimensions of existing door systems, making it applicable to various working conditions, including normal and inclined applications.
Claims
1. A folding and automatic release device for the last section tread of a rail transit vehicle, characterized in that: Includes a locking hook (1), the long waist hole at the lower end of the locking hook (1) passes through the locking hook pin (7), the locking hook (1) is installed on the inner side wall of the longitudinal beam of the ramp tread (2) through the locking hook support (6), the locking hook (1) swings and slides on the locking hook pin (7); the ramp tread (2) and the last section tread (4) are connected by several hinge pins (3) and torsion springs (5).
2. The folding and automatic release device for the last section tread of rail transit according to claim 1, characterized in that: The ramp treads (2) include several foldable treads (8).
3. The folding and automatic release device for the last section of the tread for rail transit according to claim 1, characterized in that: The torsion spring (5) is twisted around the hinge axis (3).
4. The folding and automatic release device for the last section tread of rail transit according to claim 1, characterized in that: The locking hook (1) is provided with a buckle for securing the last pedal (4).
5. The folding and automatic release device for the last section tread of rail transit according to claim 1, characterized in that: The protruding guide surface of the locking hook (1) is lower than that of the last pedal (4).
6. The folding and automatic release device for the last section tread of rail transit according to claim 1, characterized in that: The aforementioned end pedal (4) is located on the train door system.
7. The folding and automatic release device for the last section tread of rail transit according to claim 6, characterized in that: The train door system mentioned is a rail transit train door system.