Anti-pinch device for subway car doors
By combining a buffer mechanism and a limiting device, the problems of low detection sensitivity and slow response speed of traditional anti-pinch devices for train doors are solved, achieving smooth closing of subway doors and efficient anti-pinch effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 张灿
- Filing Date
- 2025-08-04
- Publication Date
- 2026-06-30
AI Technical Summary
Traditional subway car door anti-pinch devices have low sensitivity when detecting transparent or flexible objects, making them prone to missed detections. Furthermore, during peak hours, the detection signal is easily delayed when passengers are squeezed, resulting in unsatisfactory anti-pinch performance.
The system employs a buffer mechanism and limiting device, including a buffer block, rolling column, sponge sleeve, limiting block, and sensor. The buffer mechanism absorbs impact force, the limiting device restricts the range of motion, and the sponge pad and sensor detect in real time to ensure that the door closes smoothly.
It improves the safety and reliability of door anti-pinch technology, reduces the risk of pinching injuries, ensures smooth door closure, and enhances detection sensitivity and response speed.
Smart Images
Figure CN224432310U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of subway safety protection technology, and in particular to an anti-pinch device for subway vehicle doors. Background Technology
[0002] The anti-pinch device for subway car doors is a key safety component in the subway car door system. It is mainly used at the passenger compartment doors of subway cars. Its core function is to monitor in real time whether any passenger limbs or personal belongings enter the door closing area during the door closing process. When such a situation is detected, it can promptly trigger the door to reopen or stop closing, thereby avoiding injury to people or damage to property and ensuring the personal safety of passengers and the order of train operation during subway operation.
[0003] Traditional subway car door anti-pinch devices mainly consist of infrared light curtain sensors, mechanical contact edge pressure sensors, and control units. In actual use, when the door begins to close, the infrared light curtain sensor forms a detection area on the door closing path by emitting and receiving infrared beams. If the beam is blocked, it immediately transmits a signal to the control unit. The mechanical contact edge pressure sensor is installed on the edge of the door. When the door comes into contact with an object and generates a certain pressure, the sensor sends a signal to the control unit. After receiving the signal, the control unit drives the door to stop closing and reopen. However, the infrared light curtain sensor has extremely low sensitivity to transparent or flexible objects and is prone to missed detections. The mechanical contact edge pressure sensor only triggers its action when a preset pressure threshold is reached, which may result in the protection only activating after a passenger has been pinched.
[0004] To address these issues, existing technologies employ multi-sensor fusion technology and add physical protective structures such as flexible pressure-sensitive anti-pinch strips to improve detection range and response speed. However, during peak subway hours, when passengers are squeezed into the gap between the train door and the platform screen door, the narrow gap and the limited sensor installation position due to the door structure cause delays in detection signals due to obstruction angle deviations, resulting in unsatisfactory anti-pinch effects on subway train doors. Utility Model Content
[0005] To overcome the above shortcomings, this utility model provides a subway car door anti-pinch device, which aims to improve the problem that the existing technology cannot trigger the door to reopen or stop closing in a timely manner.
[0006] To achieve the above objectives, the present invention adopts the following technical solution: a subway vehicle door anti-pinch device, comprising two door bodies, each of the two door bodies having a cavity on an adjacent side, a buffer mechanism being provided on the inner wall of the two cavities, and a limit device being provided on the outer wall of the buffer mechanism;
[0007] The buffer mechanism includes two mounting plates. The outer walls of the two mounting plates are respectively fixedly connected to the inner walls of the two cavities on opposite sides. Buffer blocks are slidably connected to the upper and lower sides of the inner walls of the two cavities. A spring is fixedly connected to the opposite end of each of the two buffer blocks. The opposite ends of each of the two springs are respectively fixedly connected to the corresponding mounting plates. Rolling columns are provided between adjacent buffer blocks. Sponge sleeves slide on the outer walls of the two rolling columns. Sliding components are provided on the outer walls of the multiple buffer blocks.
[0008] As a further description of the above technical solution:
[0009] The limiting device includes multiple square sliders, which are rotatably connected to the upper and lower ends of the two rolling columns. Each of the multiple buffer blocks has a first groove on an adjacent side, and the multiple square sliders are slidably connected to the corresponding first groove. Each of the multiple buffer blocks has a second groove on its inner wall, and a limiting block is slidably connected to the inner wall of each second groove. Each of the multiple limiting blocks has a second spring fixedly connected to its opposite side, and the opposite side of each second spring is fixedly connected to the corresponding second groove. Each of the multiple limiting blocks has a pull rod fixedly connected to its opposite end, and the opposite ends of each pull rod pass through the corresponding buffer block.
[0010] As a further description of the above technical solution:
[0011] The sliding assembly includes multiple rollers, which are rotatably connected to the left and right sides of the outer wall of the corresponding buffer block. The upper and lower sides of the inner walls of the two cavities are provided with sliding grooves, and the multiple rollers are slidably connected to the corresponding sliding grooves.
[0012] As a further description of the above technical solution:
[0013] The upper and lower ends of the outer wall of the sponge sleeve are provided with fixing rings, and the opposite sides of the two fixing rings are respectively attached to the corresponding buffer blocks.
[0014] As a further description of the above technical solution:
[0015] Both of the two door panels have arc grooves on adjacent sides, and sponge pads are fixedly connected to the inner walls of both arc grooves.
[0016] As a further description of the above technical solution:
[0017] Limiting strips are fixedly connected to the front and rear sides of the outer walls of the multiple limiting blocks, and limiting grooves are opened on the front and rear sides of the inner walls of the multiple sliding grooves. The multiple limiting strips are slidably connected to the corresponding limiting grooves.
[0018] As a further description of the above technical solution:
[0019] Each of the two mounting plates has a control console fixedly connected to one of its adjacent sides, and each of the two control consoles has a sensor fixedly connected to its center.
[0020] As a further description of the above technical solution:
[0021] Power supplies are fixedly connected to the bottom of adjacent sides of the two mounting plates, and the two power supplies are electrically connected to the corresponding control consoles.
[0022] This utility model has the following beneficial effects:
[0023] 1. In this utility model, the rolling column of the buffer mechanism, in conjunction with the sponge sleeve, can buffer the impact force by rotating when clamping an object; the buffer block of the buffer assembly, in conjunction with the spring, can further buffer the force, while the pulley slides in the groove to ensure the stability of the buffering process, and the sponge pad in the arc groove can also enhance the buffering effect, reduce the risk of pinching injury, and improve the safety and reliability of the car door anti-pinch.
[0024] 2. In this utility model, the limit mechanism’s pull rod cooperates with the limit block to quickly release the limit on the buffer block, making it easy for the rolling mechanism to move to the operating position with the buffer block, making the replacement of the sponge sleeve more convenient; after replacement, the spring can push the limit block to reset and fix, ensuring the stability of the component, which not only improves the replacement efficiency, but also ensures the stability of subsequent use. Attached image description:
[0025] Figure 1 This is a perspective view of the anti-pinch device for subway vehicle doors proposed in this utility model;
[0026] Figure 2 This is a side view of the anti-pinch device for subway vehicle doors proposed in this utility model;
[0027] Figure 3 for Figure 2 A magnified structural diagram of A in the middle;
[0028] Figure 4 This is a cross-sectional view of the door body of the subway vehicle door anti-pinch device proposed in this utility model;
[0029] Figure 5 This is a partial exploded view of the door body of the subway vehicle door anti-pinch device proposed in this utility model;
[0030] Figure 6 This is a split view of the sponge sleeve of the rolling column of the subway vehicle door anti-pinch device proposed in this utility model;
[0031] Figure 7 This is a schematic diagram of the buffer mechanism of the anti-pinch device for subway car doors proposed in this utility model;
[0032] Figure 8 This is a structural exploded view of the limiting device of the subway vehicle door anti-pinch device proposed in this utility model.
[0033] Legend:
[0034] 1. Door body; 2. Buffer mechanism; 201. Mounting plate; 202. Buffer block; 203. Spring 1; 204. Rolling column; 205. Sponge sleeve; 206. Sliding assembly; 2061. Roller; 2062. Slide groove 3; 3. Limiting device; 301. Square slider; 302. Slide groove 1; 303. Slide groove 2; 304. Limiting block; 305. Spring 2; 306. Pull rod; 4. Cavity; 5. Fixing ring; 6. Arc groove; 7. Sponge pad; 8. Limiting strip; 9. Limiting groove; 10. Control console; 11. Sensor; 12. Power supply. Detailed Implementation
[0035] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0036] Reference Figure 1 , Figure 4 and Figure 6 An embodiment of this utility model provides a subway vehicle door anti-pinch device, including two door bodies 1. Each of the two door bodies 1 has a cavity 4 on an adjacent side, which provides installation space for subsequent components. The inner walls of the two cavities 4 are provided with a buffer mechanism 2, which plays a buffering role during the closing process of the door body 1. The outer wall of the buffer mechanism 2 is provided with a limit device 3, which limits the range of motion of the buffer mechanism 2 to ensure its stable operation.
[0037] The buffer mechanism 2 includes two mounting plates 201, which provide a fixed base for the spring 203. The outer walls of the two mounting plates 201 are respectively fixedly connected to the opposite sides of the inner walls of the two cavities 4. Buffer blocks 202 are slidably connected to the upper and lower sides of the inner walls of the two cavities 4. The buffer blocks 202 can slide along the inner walls of the cavities 4 to achieve buffering action. Springs 203 are fixedly connected to the opposite ends of the two buffer blocks 202. Springs 203 can absorb impact force through their own elastic deformation. The ends of the buffer blocks 202 are respectively fixedly connected to the corresponding mounting plates 201. This connection can ensure that the spring 203 can deform stably and provide rebound force when it is subjected to force. Rolling columns 204 are provided between the adjacent buffer blocks 202. The rolling columns 204 can convert sliding friction into rolling friction to reduce the resistance during buffering. The outer walls of the two rolling columns 204 are slidably covered with sponge sleeves 205. The outer walls of the buffer blocks 202 are provided with sliding components 206. The sliding components 206 can reduce the friction when the buffer blocks 202 slide to ensure smooth buffering.
[0038] Specifically, when the two doors 1 are closed, the cavities 4 on adjacent sides provide installation and movement space for the buffer mechanism 2 and the limiting device 3. The buffer mechanism 2 starts working under the range limitation of the limiting device 3. The mounting plate 201 is fixed to the inner wall of the cavity 4 to provide stable support for the spring 203. When the doors 1 approach each other, the rolling column 204 contacts first, and the sponge sleeve 205 on its outer wall absorbs part of the impact force and reduces noise. The rolling column 204 pushes the adjacent buffer block 202 to slide along the inner wall of the cavity 4. The sliding component 206 reduces the sliding friction of the buffer block 202 to ensure its smooth movement. When 202 moves, the spring 203 at the far end of the compression phase is compressed. The spring 203 further absorbs the impact force of the door 1 closing through elastic deformation. At this time, the limiting device 3 restricts the range of motion of the buffer mechanism 2 to prevent excessive displacement of the components. The rolling column 204 converts the sliding friction of the buffer block 202 into rolling friction to reduce resistance, making the buffering effect of the spring 203 and the sponge sleeve 205 more efficient. With the cooperation of each component, the impact force when the door 1 closes is absorbed in layers to avoid hard collision. At the same time, the limiting device 3 ensures that the entire buffering process is stable and orderly, realizing the smooth buffering function of the door 1 closing.
[0039] Reference Figure 2 , Figure 3 and Figure 8The limiting device 3 includes multiple square sliders 301. The square sliders 301 cooperate with a first groove 302 to limit the movement direction of the rolling column 204. The multiple square sliders 301 are rotatably connected to the upper and lower ends of two rolling columns 204, allowing the square sliders 301 to move synchronously with the rolling columns 204. Each adjacent side of a plurality of buffer blocks 202 has a first groove 302, which provides a sliding track for the square sliders 301 to limit their displacement range. The multiple square sliders 301 are slidably connected to their corresponding first grooves 302. This cooperation limits the offset of the rolling column 204 by the sliding of the square sliders 301 within the first groove 302. The inner walls of each plurality of buffer blocks 202 have a second groove 303, which provides mounting space for the limiting block 304. In the sliding space, the inner walls of multiple sliding grooves 303 are slidably connected to limit blocks 304. The limit blocks 304 can slide along the sliding grooves 303 to cooperate in realizing the limiting function. The opposite sides of the multiple limit blocks 304 are fixedly connected to springs 305. The springs 305 can push the limit blocks 304 to reset through elastic deformation. The opposite sides of the multiple springs 305 are respectively fixedly connected to the corresponding sliding grooves 303. This connection can ensure that the springs 305 deform stably when subjected to force. The opposite ends of the multiple limit blocks 304 are fixedly connected to pull rods 306. The pull rods 306 are used to pull the limit blocks 304 to adjust the limiting state. The opposite ends of the multiple pull rods 306 respectively pass through the corresponding buffer blocks 202. This through setting allows the pull rods 306 to be operated externally to control the limit blocks 304.
[0040] Specifically, the square slider 301 is rotatably connected to the upper and lower ends of the rolling column 204, and simultaneously slidably connected to the first groove 302 of the buffer block 202. When the rolling column 204 moves, it drives the square slider 301 to slide within the first groove 302. The first groove 302 limits the direction of movement and offset range of the rolling column 204 by restricting the sliding trajectory of the square slider 301. The second groove 303 on the inner wall of the buffer block 202 provides sliding space for the limiting block 304. When the limiting block 304 slides within the second groove 303, the second spring 305 deforms due to the movement of the limiting block 304. The deformed spring 305 can push the limiting block 304 to reset. The pull rod 306 passes through the buffer block 202 and connects to the limiting block 304. External operation of the pull rod 306 can drive the limiting block 304 to move within the second groove 303, thereby controlling the position of the limiting block 304. With the cooperation of all components, the square slider 301 and the first slide groove 302 restrict the movement of the rolling column 204. The limit block 304, the second spring 305 and the pull rod 306 cooperate to achieve limiting and resetting, together ensuring that the buffer mechanism 2 works stably within the limited range and avoiding excessive displacement of components from affecting the buffering effect.
[0041] Reference Figure 3 , Figure 4 and Figure 7The sliding assembly 206 includes multiple rollers 2061. The rollers 2061 convert the sliding friction of the buffer block 202 into rolling friction to reduce resistance. The multiple rollers 2061 are rotatably connected to the left and right sides of the outer wall of the corresponding buffer block 202. This connection ensures that the rollers 2061 move synchronously with the buffer block 202. The upper and lower sides of the inner walls of the two cavities 4 are each provided with a sliding groove 2062. The sliding groove 2062 provides a sliding track for the rollers 2061 to limit their movement path. The multiple rollers 2061... Each of the rollers 2061 and the corresponding slide groove 2062 are slidably connected. This connection ensures that the roller 2061 slides along a fixed track to improve the sliding stability of the buffer block 202. The upper and lower ends of the outer wall of the sponge sleeve 205 are provided with fixing rings 5. The fixing rings 5 are used to fix the position of the sponge sleeve 205 and prevent it from shifting on the outer wall of the rolling column 204. The two fixing rings 5 are respectively attached to the corresponding buffer block 202 on opposite sides. This attachment method can limit the fixing rings 5 through the buffer block 202 to enhance the installation firmness of the sponge sleeve 205.
[0042] Specifically, the sliding assembly 206 includes multiple rollers 2061. The rollers 2061 convert the sliding friction of the buffer block 202 into rolling friction to reduce resistance. The multiple rollers 2061 are rotatably connected to the left and right sides of the outer wall of the corresponding buffer block 202. This connection ensures that the rollers 2061 move synchronously with the buffer block 202. The upper and lower sides of the inner walls of the two cavities 4 are each provided with a sliding groove 2062. The sliding groove 2062 provides a sliding track for the rollers 2061 to restrict their movement path. The multiple rollers 2061 are slidably connected to their corresponding sliding grooves 2062. This connection ensures that the rollers 2061 slide along a fixed trajectory to lift the buffer block. 202 Sliding stability: The upper and lower ends of the outer wall of the sponge sleeve 205 are provided with fixing rings 5. The fixing rings 5 are used to fix the position of the sponge sleeve 205 and prevent it from shifting on the outer wall of the rolling column 204. The opposite sides of the two fixing rings 5 are respectively attached to the corresponding buffer blocks 202. This attachment method can limit the fixing rings 5 through the buffer blocks 202 to enhance the installation firmness of the sponge sleeve 205. Specifically, when the buffer block 202 is moved by force, its attachment to the fixing rings 5 will not loosen, which can effectively prevent the fixing rings 5 and the sponge sleeve 205 from shifting along the axial direction of the rolling column 204, thereby ensuring that the sponge sleeve 205 is always in the preset working position during the buffering process.
[0043] Reference Figure 4 , Figure 5 and Figure 8Each of the two door panels 1 has an arc groove 6 on one adjacent side. The arc groove 6 provides a suitable installation position for the sponge pad 7. At the same time, its arc structure can adapt to the movement trajectory of the door panel 1 when it is closed to avoid structural interference. The inner walls of the two arc grooves 6 are fixedly connected to the sponge pad 7. When the door panel 1 is about to be fully closed, the sponge pad 7 contacts the corresponding part of the other door panel 1, which can further absorb the remaining impact force and reduce the direct friction between adjacent sides of the door panel 1 to reduce wear. The outer walls of the multiple limiting blocks 304 are fixedly connected to the front and rear sides of the limiting strips 8. The limiting strips 8 can move synchronously with the limiting blocks 304 and are used to cooperate with the limiting grooves 9 to restrict the sliding posture of the limiting blocks 304. The inner walls of the multiple sliding grooves 303 are also provided with limiting grooves 9 on the front and rear sides. The limiting grooves 9 provide matching sliding channels for the limiting strips 8 and can limit the movement direction of the limiting strips 8. The multiple limiting strips 8 are slidably connected to the corresponding limiting grooves 9. This sliding cooperation can prevent the limiting blocks 304 from sliding. 4. When the slide rail 2 303 shifts or rotates, it ensures that the limit block 304 slides smoothly only in the preset direction. The two mounting plates 201 are fixedly connected to the adjacent side of the control console 10. The control console 10 is the control core and can receive external signals and issue control commands to coordinate the work of related components. The two control consoles 10 are fixedly connected to the middle of the two control consoles 10. The sensor 11 can detect the distance and closing status between the two doors 1 in real time and convert the detected information into an electrical signal and transmit it to the control console 10. The two mounting plates 201 are fixedly connected to the bottom of the adjacent side of the power supply 12. The power supply 12 can store and output electrical energy to provide a continuous power supply for the control console 10 and the sensor 11. The two power supplies 12 are electrically connected to the corresponding control console 10. This electrical connection can form a stable power supply circuit to ensure that the power is continuously transmitted from the power supply 12 to the control console 10 and ensure the normal operation of the control console 10 and the sensor 11.
[0044] Specifically, the arc groove 6 on the adjacent side of the door 1 provides an installation base for the sponge pad 7. When the door 1 is closed, the sponge pad 7 contacts the other door 1 along the trajectory of the arc groove 6, absorbing the remaining impact force through its own deformation, while reducing the direct friction between the adjacent sides of the door 1. When the limiting block 304 slides in the slide groove 303, the limiting strip 8 on its outer wall slides synchronously along the limiting groove 9 on the inner wall of the slide groove 303. The cooperation between the limiting strip 8 and the limiting groove 9 prevents the limiting block 304 from shifting or rotating, ensuring that the limiting block 304 slides smoothly only in the preset direction. The power supply 12 on the mounting plate 201 supplies power to the control console 10. The sensor 11 in the middle of the control console 10 detects the closing distance and status of the door 1 and transmits the signal to the control console 10. After receiving the signal, the control console 10 coordinates the operation of the relevant components. With the cooperation of all components, the sponge pad 7 enhances the closing buffer effect of the door 1, and the limit strip 8 and limit groove 9 ensure the stable operation of the limit block 304. At the same time, the power supply 12, the control console 10 and the sensor 11 form a power supply and signal transmission circuit to ensure that all components cooperate in an orderly manner during the closing process of the door 1.
[0045] Working principle: When the two doors 1 are closed, the cavity 4 provides installation space, and the buffer mechanism 2 operates under the restriction of the limiting device 3. The rolling column 204 contacts first, and its outer wall sponge sleeve 205 buffers and reduces noise, pushing the buffer block 202 to slide. The roller 2061 slides within the slide groove 2062 to reduce resistance. The buffer block 202 compresses the spring 203, which absorbs the impact force. The fixing ring 5 fixes the sponge sleeve 205, and the limiting device 3 limits the amplitude of the buffer mechanism 2. All components work together to absorb the impact force and achieve smooth buffering.
[0046] When replacing the sponge sleeve 205, the square slider 301 of the limiting device 3 slides and limits within the first slide groove 302, keeping the rolling column 204 in a stable position without deviation, making it easy to remove the old sponge sleeve 205. When installing the new sponge sleeve 205, the limiting block 304 engages in the limiting fit within the second slide groove 303, and the limiting strip 8 slides along the limiting groove 9, fixing the position of the buffer block 202. Its fitting fixing ring 5 can accurately position the new sponge sleeve 205 on the outer wall of the rolling column 204. After installation, the limiting device 3 restricts the movement of the buffer block 202 and the rolling column 204, ensuring that the new sponge sleeve 205 is stable and does not shift, thus completing the replacement.
[0047] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A subway car door anti-pinch device, comprising two door bodies (1), characterized in that: A cavity (4) is provided on each adjacent side of the two doors (1), and a buffer mechanism (2) is provided on the inner wall of the two cavities (4), and a limit device (3) is provided on the outer wall of the buffer mechanism (2). The buffer mechanism (2) includes two mounting plates (201). The outer walls of the two mounting plates (201) are respectively fixedly connected to the inner walls of the two cavities (4) on opposite sides. Buffer blocks (202) are slidably connected to the upper and lower sides of the inner walls of the two cavities (4). Springs (203) are fixedly connected to the opposite ends of the two buffer blocks (202). The opposite ends of the two springs (203) are respectively fixedly connected to the corresponding mounting plates (201). Rolling columns (204) are provided between adjacent buffer blocks (202). Sponge sleeves (205) slide on the outer walls of the two rolling columns (204). Sliding components (206) are provided on the outer walls of the multiple buffer blocks (202).
2. The anti-pinch device for subway car doors according to claim 1, characterized in that: The limiting device (3) includes multiple square sliders (301), which are rotatably connected to the upper and lower ends of the two rolling columns (204). Each of the multiple buffer blocks (202) has a first groove (302) on an adjacent side. The multiple square sliders (301) are slidably connected to the corresponding first groove (302). Each of the multiple buffer blocks (202) has a second groove (303) on its inner wall. Each of the multiple second grooves (303) has a limiting block (304) slidably connected to its inner wall. Each of the multiple limiting blocks (304) has a second spring (305) fixedly connected to its opposite side. Each of the multiple second springs (305) has an opposite side fixedly connected to its corresponding second groove (303). Each of the multiple limiting blocks (304) has a pull rod (306) fixedly connected to its opposite end. Each of the multiple pull rods (306) has an opposite end that passes through the corresponding buffer block (202).
3. The anti-pinch device for subway car doors according to claim 1, characterized in that: The sliding component (206) includes multiple rollers (2061), which are rotatably connected to the left and right sides of the outer wall of the corresponding buffer block (202). The inner walls of the two cavities (4) are provided with sliding grooves (2062) on the upper and lower sides, and the multiple rollers (2061) are slidably connected to the corresponding sliding grooves (2062).
4. The anti-pinch device for subway car doors according to claim 1, characterized in that: The upper and lower ends of the outer wall of the sponge sleeve (205) are provided with fixing rings (5), and the two fixing rings (5) are respectively attached to the corresponding buffer blocks (202) on opposite sides.
5. The anti-pinch device for subway car doors according to claim 1, characterized in that: Both of the two door bodies (1) have arc grooves (6) on their adjacent sides, and sponge pads (7) are fixedly connected to the inner walls of both arc grooves (6).
6. The anti-pinch device for subway car doors according to claim 2, characterized in that: Limiting strips (8) are fixedly connected to the front and rear sides of the outer walls of the multiple limiting blocks (304), and limiting grooves (9) are opened on the front and rear sides of the inner walls of the multiple sliding grooves (303). The multiple limiting strips (8) are slidably connected to the corresponding limiting grooves (9).
7. The anti-pinch device for subway car doors according to claim 1, characterized in that: Each of the two mounting plates (201) is fixedly connected to a control console (10) on one of their adjacent sides, and each of the two control consoles (10) is fixedly connected to a sensor (11) in the middle.
8. The anti-pinch device for subway car doors according to claim 7, characterized in that: Power supplies (12) are fixedly connected to the bottom of adjacent sides of the two mounting plates (201), and the two power supplies (12) are electrically connected to the corresponding control consoles (10).