A subway platform screen door anti-pinch device

Abstract

This utility model discloses an anti-pinch device for subway platform screen doors in the field of subway platform screen door technology. It includes a mounting frame, on the inner side of which two sliding frames for opening and closing are slidably connected. A door panel is installed on the inner side of the sliding frames by bolts. Driving components are installed on both sides of the mounting frame and between the two sliding frames. The driving components are used to drive the sliding frames to drive the door panels to open and close. The sliding frames are disassembled and fixed to the door panels by multiple bolts to facilitate the disassembly and assembly of the door panels for inspection or replacement. The driving components drive the door panels on the inner side of the sliding frames to move closer or further apart. The front end of the protective component is a buffer mechanism. When an object or a person's limb is pinched, the force buffer structure contracts, providing the person with reaction time to withdraw the object or limb.

Description

Technical Field

[0001] This utility model relates to the field of subway platform screen doors, specifically a subway platform screen door anti-pinch device. Background Technology

[0002] In the subway operation system, platform screen doors are a key facility for ensuring passenger safety and separating the platform from the track area. The safety of their closing process is directly related to the personal safety and riding experience of passengers. However, the existing anti-pinch design of subway platform screen doors still has obvious shortcomings and it is difficult to completely avoid the risk of pinching injury when closing.

[0003] Currently, most subway platform screen doors rely on traditional sensors (such as infrared beams and pressure sensors) to trigger the closing and retraction action. However, in practical applications, there is a delay in the retraction response. When a passenger's limbs or personal belongings (such as backpacks or umbrellas) are accidentally placed in the closing gap of the screen door, after the sensor detects the pinching signal, it takes multiple steps, including signal transmission, controller judgment, and activation of the drive device, before the door can be triggered to open in the reverse direction. This response time is usually more than 0.5-1 second. The driving force when the screen door closes is relatively large (usually 50-100N). If the retraction is not timely, it is very easy to cause crushing injuries to the pinched limbs or objects, especially for children, the elderly, and other groups with slower reaction times, where the risk is even more prominent.

[0004] In addition, the edges of existing platform screen doors are mostly rigid structures. Even if the anti-pinch retraction is triggered, the rigid contact at the moment of closing still lacks buffer protection. When the door comes into contact with the trapped object (such as a passenger's finger or mobile phone), the collision without elastic buffer will directly generate instantaneous impact force, which may cause damage to the object or even limb contusions and crush injuries. For example, when a passenger's clothing is trapped, the rigid edge may snag the fabric and continue to close with the door. Even if it is subsequently retracted, the skin may be abraded due to the excessive initial squeezing force.

[0005] Existing anti-pinch devices have limitations in trigger sensitivity: for thinner objects (such as paper or scarves) or edges and corners not fully covered by the pressure sensing strip, the sensor may not be able to detect them in time, causing the door to remain closed and creating a hidden risk of pinching. In addition, it is inconvenient to disassemble and repair existing platform screen doors after they are damaged, as the platform screen door panels cannot be removed and replaced. The existing platform screen door splicing and bonding drive for movement and folding is unstable and untimely. Therefore, it is necessary to design a subway platform screen door anti-pinch device to solve the above problems. Utility Model Content

[0006] The purpose of this invention is to provide an anti-pinch device for subway platform screen doors to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a subway platform screen door anti-pinch device, including a mounting frame, two sliding frames for opening and closing are slidably connected to the inner side of the mounting frame, a door panel is installed on the inner side of the sliding frames by bolts, driving components are respectively installed between the two sides of the mounting frame and the two sliding frames, the driving components are used to drive the sliding frames to drive the door panel to open and close, and a protective component for anti-pinch is installed on one side of the door panel.

[0008] Preferably, the driving component includes motors respectively mounted on both sides of the mounting frame. A first bevel gear is mounted on one side of the motor via an output shaft. Bidirectional lead screws pass through both sides of the interior of the mounting frame. A second bevel gear is mounted on one end of each bidirectional lead screw. Two drive frames are mounted on the outer side of the bidirectional lead screws. A connecting rod is hinged to one side of each drive frame. A driven frame is hinged to one end of each connecting rod. The driven frame is slidably connected to the sliding frame. The two connecting rods are hinged together. The first bevel gear meshes with the second bevel gear.

[0009] Preferably, the protective component includes a fixing strip that is fixedly connected to both sides of the door panel, a sliding rod that is slidably connected through one side of the fixing strip, a baffle that is fixedly connected to one end of a plurality of sliding rods, a spring that is fitted on the outside of the sliding rod, a protective pad that is laid on one side of the baffle, and a connecting strip that is fixedly connected to the other end of the plurality of sliding rods.

[0010] Preferably, the protective component further includes a controller installed on the other side of the door panel, pressure sensors installed on both sides of the door panel and on the side of the fixing strip, photoelectric sensor modules installed between the two door panels respectively, and ultrasonic detection modules installed on both sides of the mounting bracket respectively.

[0011] Preferably, a plurality of evenly arranged rollers are fixedly installed at the bottom of the sliding frame, and the rollers are in rolling connection with the bottom of the mounting frame.

[0012] Preferably, both the baffle and the protective pad have movable through holes on one side.

[0013] Preferably, a guide block is fixedly installed on the top of the sliding frame, and the guide block is slidably connected to the mounting frame.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. The mounting frame has a U-shaped cross-section and is installed on the subway station floor. The sliding frame is disassembled and fixed to the door panel by multiple bolts to facilitate the disassembly and assembly of the door panel for inspection or replacement. The driving component moves the door panels on the inner side of the sliding frame closer or further apart. The front end of the protective component is a buffer mechanism. When it clamps an item or a person's limb, the force buffer structure contracts and provides the person with reaction time to withdraw the item or limb, avoiding the difficulty of removing the item or limb after being rigidly squeezed, thus improving the protective effect of the platform screen door.

[0016] 2. The two connecting rods are hinged in the middle. The motor drives the first bevel gear to rotate through the output shaft. Then, the first bevel gear rotates through the double-headed screw driven by the second bevel gear. The rotation of the double-headed screw can simultaneously drive the two drive frames to move closer or further apart. The sliding frame is guided and limited by a fixed rod passing through the driven frame. The two drive frames drive the sliding frame on one side of the driven frame to move telescopically through the two connecting rods, which improves the timeliness and stability of the sliding frame driving the door panels to move closer or further apart. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0018] Figure 2 Left sectional stereoscopic view of the overall structure of this utility model Figure 1 ;

[0019] Figure 3 Left sectional stereoscopic view of the overall structure of this utility model Figure 2 ;

[0020] Figure 4 The overall structure of this utility model Figure 2 Enlarged view of point A in the middle;

[0021] Figure 5 The overall structure of this utility model Figure 2 Enlarged view of section B in the middle.

[0022] In the diagram: 1. Mounting bracket; 2. Sliding bracket; 3. Door panel; 4. Motor; 5. First bevel gear; 6. Double-acting lead screw; 7. Second bevel gear; 8. Drive frame; 9. Connecting rod; 10. Driven frame; 11. Fixing strip; 12. Sliding rod; 13. Baffle; 14. Spring; 15. Protective pad; 16. Connecting strip; 17. Controller; 18. Pressure sensor; 19. Through-beam photoelectric sensor module; 20. Ultrasonic detection module; 21. Roller; 22. Movable through hole; 23. Guide block. Detailed Implementation

[0023] 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.

[0024] Example 1

[0025] Please refer to Figure 1-5 As shown, this utility model provides a subway platform screen door anti-pinch device, including a mounting frame 1. Two sliding frames 2 for opening and closing are slidably connected to the inner side of the mounting frame 1. A door panel 3 is installed on the inner side of the sliding frames 2 by bolts. Driving components are installed between the two sides of the mounting frame 1 and the two sliding frames 2 respectively. The driving components are used to drive the sliding frames 2 to drive the door panel 3 to open and close. A protective component for anti-pinch is installed on one side of the door panel 3.

[0026] It should be added that the mounting bracket 1 has a U-shaped cross section and is installed on the subway station ground. The sliding bracket 2 is disassembled and fixed to the door panel 3 by multiple bolts to facilitate the disassembly and assembly of the door panel 3 for inspection or replacement. The driving component moves the door panels 3 on the inner side of the sliding bracket 2 closer or further apart. The front end of the protective component is a buffer mechanism. When it clamps an item or a person's limb, the force buffer structure contracts and provides the person with reaction time to withdraw the item or limb, avoiding the item or limb being difficult to remove after being rigidly squeezed, thus improving the protective effect of the platform screen door.

[0027] Specifically, the driving components include motors 4 respectively installed on both sides of the mounting frame 1. A first bevel gear 5 is mounted on one side of the motor 4 via an output shaft. A double-acting lead screw 6 passes through both sides of the inside of the mounting frame 1. A second bevel gear 7 is mounted on one end of the double-acting lead screw 6. Two drive frames 8 are mounted on the outside of the double-acting lead screw 6. A connecting rod 9 is hinged to one side of the drive frame 8. A driven frame 10 is hinged to one end of the connecting rod 9. The driven frame 10 is slidably connected to the sliding frame 2. The two connecting rods 9 are hinged together. The first bevel gear 5 and the second bevel gear 7 mesh. A plurality of evenly arranged rollers 21 are fixedly installed at the bottom of the sliding frame 2. The rollers 21 are slidably connected to the bottom of the mounting frame 1. A guide block 23 is fixedly installed at the top of the sliding frame 2. The guide block 23 is slidably connected to the mounting frame 1.

[0028] The two connecting rods 9 are hinged in the middle. The motor 4 drives the first bevel gear 5 to rotate through the output shaft. Then, the first bevel gear 5 rotates through the second bevel gear 7 and the double-headed screw 6. The rotation of the double-headed screw 6 can simultaneously drive the two drive frames 8 to move closer or further away from each other. The sliding frame 2 is guided and limited by the driven frame 10 through the fixed rod. The two drive frames 8 drive the sliding frame 2 on one side of the driven frame 10 to move telescopically through the two connecting rods 9, which improves the timeliness and stability of the sliding frame 2 driving the door panel 3 to move closer or further away from each other.

[0029] Furthermore, the multiple rollers 21 at the bottom of the sliding frame 2 can support the door panel 3, and also facilitate the sliding frame 2 to move the door panel 3 within the mounting frame 1. The guide block 23 can guide and limit the sliding frame 2 again, preventing the sliding frame 2 from shifting or shaking.

[0030] More specifically, the protective components include fixing strips 11 fixedly connected to both sides of the door panel 3, a sliding rod 12 slidably connected through one side of the fixing strip 11, a baffle 13 fixedly connected to one end of multiple sliding rods 12, a spring 14 fitted on the outside of the sliding rod 12, a protective pad 15 laid on one side of the baffle 13, and a connecting strip 16 fixedly connected to the other end of multiple sliding rods 12. The protective components also include a controller 17 installed on the other side of the door panel 3, pressure sensors 18 installed on both sides of the door panel 3 and on the side of the fixing strip 11, photoelectric sensor modules 19 installed between the two door panels 3, ultrasonic detection modules 20 installed on both sides of the mounting bracket 1, and movable through holes 22 opened on one side of both the baffle 13 and the protective pad 15.

[0031] Furthermore, multiple sliding rods 12 extending through one side of the fixing strip 11 can support the baffle 13, and the springs 14 on the outside of the sliding rods 12 can squeeze and push the baffle 13. The protective pad 15 is made of sponge material, and the movable through holes 22 on one side of the baffle 13 and the protective pad 15 can facilitate the emission of light from the photoelectric sensor module 19 to form a light curtain, so as to detect objects and personnel limbs in a timely manner. The protective pad 15 squeezes the spring 14 through the baffle 13, and the baffle 13 squeezes and pushes the pressure sensor 18 through the sliding rods 12. Even if the controller 17 controls the two motors 4 to drive the first bevel gear 5 to rotate in the opposite direction, it will drive the door panel 3 on one side of the sliding frame 2 to move in the opposite direction.

[0032] Among them, the photoelectric sensor module 19 is installed on the anti-pinch plate of the platform door. When the light between the sensors is blocked by people or objects, it will transmit the signal to the controller 17. The ultrasonic detection module 20 uses the Doppler effect to generate an ultrasonic detection beam to detect the gap between the subway car door and the platform door. It can accurately capture the subtle movements of the trapped object and generate an alarm signal.

[0033] Working principle: First, the ultrasonic detection module 20 and the through-beam photoelectric sensor module 19 monitor the area between the two door panels 3. When the protective pad 15 on one side of the baffle 13 presses against an object or part, the baffle 13 presses against the connecting strip 16 through the sliding rod 12. At the same time, the baffle 13 presses against the pressure sensor 18 through the connecting strip 16 at one end of the sliding rod 12. Simultaneously, the baffle 13 presses against the spring 14. At the same time, the ultrasonic detection module 20 and the through-beam photoelectric sensor module 19 transmit information to the controller 17. Then, the controller 17 controls the two motors 4 to rotate in opposite directions. At this time, the motors 4 drive the first bevel gear 5 to rotate in opposite directions through the output shaft. Then, the first bevel gear 5 rotates through the second bevel gear 7 and the double-acting screw 6. At this time, the double-acting screw 6 rotates and drives the two drive frames 8 to move away from each other. At the same time, the two drive frames 8 drive the sliding frame 2 on one side of the driven frame 10 to retract and move through the two connecting rods 9. At the same time, the roller 21 at the bottom of the sliding frame 2 rotates at the bottom of the mounting frame 1.

[0034] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0035] Although the present invention 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 invention should be included within the protection scope of the present invention.

Claims

1. A subway platform screen door anti-pinch device, comprising a mounting bracket (1), characterized in that: The mounting bracket (1) has two sliding brackets (2) for opening and closing slidably connected to its inner side. A door panel (3) is installed on the inner side of the sliding bracket (2) by bolts. A driving component is installed between the two sides of the mounting bracket (1) and the two sliding brackets (2). The driving component is used to drive the sliding bracket (2) to drive the door panel (3) to open and close. A protective component for preventing pinching is installed on one side of the door panel (3).

2. The anti-pinch device for subway platform screen doors according to claim 1, characterized in that: The driving component includes motors (4) respectively installed on both sides of the mounting frame (1). A first bevel gear (5) is mounted on one side of the motor (4) through the output shaft. A double-acting lead screw (6) passes through both sides of the inside of the mounting frame (1). A second bevel gear (7) is mounted on one end of the double-acting lead screw (6). Two drive frames (8) are mounted on the outside of the double-acting lead screw (6). A connecting rod (9) is hinged to one side of the drive frame (8). A driven frame (10) is hinged to one end of the connecting rod (9). The driven frame (10) is slidably connected to the sliding frame (2). The two connecting rods (9) are hinged together. The first bevel gear (5) meshes with the second bevel gear (7).

3. The anti-pinch device for subway platform screen doors according to claim 2, characterized in that: The protective component includes a fixing strip (11) fixedly connected to both sides of the door panel (3), a sliding rod (12) passing through and slidably connected to one side of the fixing strip (11), a baffle (13) fixedly connected to one end of the multiple sliding rods (12), a spring (14) fitted on the outside of the sliding rod (12), a protective pad (15) laid on one side of the baffle (13), and a connecting strip (16) fixedly connected to the other end of the multiple sliding rods (12).

4. The anti-pinch device for subway platform screen doors according to claim 3, characterized in that: The protective component also includes a controller (17) installed on the other side of the door panel (3), pressure sensors (18) are installed on both sides of the door panel (3) and on the side of the fixing strip (11), photoelectric sensor modules (19) are installed between the two door panels (3), and ultrasonic detection modules (20) are installed on both sides of the mounting bracket (1).

5. A subway platform screen door anti-pinch device according to claim 2, characterized in that: The bottom of the sliding frame (2) is fixedly equipped with a plurality of evenly arranged rollers (21), and the rollers (21) are in rolling connection with the bottom of the mounting frame (1).

6. A subway platform screen door anti-pinch device according to claim 4, characterized in that: Both the baffle (13) and the protective pad (15) have movable through holes (22) on one side.

7. A subway platform screen door anti-pinch device according to claim 2, characterized in that: A guide block (23) is fixedly installed on the top of the sliding frame (2), and the guide block (23) is slidably connected to the mounting frame (1).

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