Short circuit device for safety circuit of metro platform screen door
By designing a short-circuit device including a scissor-type spring clamping mechanism and a short-circuit wire, the safety circuit instability caused by the easy fall-off of the short-circuit device and operating errors in the prior art is solved, and higher reliability and convenience are achieved, ensuring the safety of subway driving.
Patent Information
- Application Number
- CN202421958474.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-14
- Publication Date
- 2025-06-27
- Estimated Expiration
- 2034-08-14
AI Technical Summary
The existing subway shield door safety circuit shorting device is prone to fall off under the vibration caused by the train, and operational errors may lead to dummy connection of short circuits, resulting in the inability to establish or be unstable for safety circuits, affecting driving safety.
A short-connecting device including a scissor-type spring clamping mechanism and a short-connecting wire is designed. The two ends of the short-connecting wire are in contact with the wiring position compression screws on the relay base, and stable is maintained through the spring clamping mechanism, and LED lights are added to the short-connecting wire to display the connection status.
It improves the reliability and operational convenience of short-circuit safety circuits of the subway shield door, avoids interruptions in safety circuits caused by the short-circuit failure, and ensures the normal entry and driving safety of the vehicle.
Smart Images
Figure CN223038156U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of subway maintenance, and particularly relates to a short-circuiting device for a safety loop of a subway platform screen door. Background Art
[0002] As a fast public transportation system in modern big cities, the subway is becoming more and more popular in cities. As an important part of subway equipment, the platform screen door system should have good stability and accuracy to ensure the normal operation of the entire subway system. After a certain platform screen door fails, the safety loop passing through the platform screen door cannot be conducted and alarms, requiring professional maintenance personnel of the platform screen door to quickly arrive at the scene and use a short-circuit wire to short-circuit the door closing relay of the platform screen door, achieving "first make it conductive and then repair it", that is, giving priority to establishing the safety loop, ensuring the normal operation of the train first, and then carrying out the repair. During actual operation, as Figure 1 shown, when the maintenance personnel short-circuit the door closing relay 6, it is necessary to conduct the wiring position 5-1 of No. 001 and the wiring position 5-2 of No. 005 on the relay seat 5. The currently used short-circuit wire consists of two alligator clips and a wire. The two alligator clips are respectively clamped on the compression screws or wiring terminals of the wiring position 5-1 of No. 001 and the wiring position 5-2 of No. 005, and a loop is formed outside through the wire. The current short-circuiting method has the following problems: the vibration generated by the passing of the train easily causes the short-circuit wire to fall off, and human operation errors may cause the short-circuit wire to be poorly connected. The above problems will cause the safety loop not to be established or be unstable, thereby affecting the train operation safety. Therefore, further optimization design is required. Summary of the Utility Model
[0003] The purpose of the utility model is to provide a short-circuiting device for a safety loop of a subway platform screen door aiming at the deficiencies in the above-mentioned prior art, so as to improve the reliability and operation convenience of short-circuiting the safety loop of the subway platform screen door.
[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:
[0005] A short-circuiting device for a safety loop of a subway platform screen door includes a spring clamping mechanism and a short-circuit wire. The spring clamping mechanism is a scissor-type clamping mechanism, and its two front ends are clamped at the grooves of the relay seat. The short-circuit wire is fixed on the spring clamping mechanism, and its two ends are respectively in contact with the compression screws of the two wiring positions on the relay seat that need to be short-circuited.
[0006] Preferably, an LED lamp is connected in series on the short-circuit wire. By adding an LED lamp on the short-circuit wire to display the connection state, it can effectively avoid the situation that the safety loop is interrupted and the vehicle cannot enter the station due to the short-circuit wire not being connected in place, and effectively improve the reliability of the safety loop during the maintenance of the platform screen door. The LED lamp shows the conductive state, and if the LED lamp is not on, it means that the short-circuiting is not successful.
[0007] Preferably, spring probes are provided at both ends of the jumper wire. The tightening screws of each terminal enter to different depths and a certain redundancy is required. By using spring probes, it is ensured that the spring probes can correctly contact the tightening screws at the wiring positions during use, and the spring structure has a certain redundancy effect, which can effectively prevent the occurrence of poor contact.
[0008] Preferably, a tension spring is provided in the middle of the two hinged parts of the spring clamping mechanism. The tension spring can keep the spring clamping mechanism stable and prevent it from falling off due to the vibration generated when the train passes.
[0009] Preferably, pressing plates are provided at the ends of the two hinged parts of the spring clamping mechanism.
[0010] Preferably, the width of the pressing plate is greater than that of the hinged link in front of it.
[0011] Preferably, serrated corrugations are provided on the force-bearing surface of the pressing plate to facilitate the pressing operation for loosening the clamping.
[0012] Preferably, pressing protrusions are provided at the front ends of the two hinged parts of the spring clamping mechanism, and the pressing protrusions are made of rubber material, which can improve the stability of the device.
[0013] Preferably, mounting brackets are provided on the sides of the two hinged parts of the spring clamping mechanism, and the mounting brackets are used to fix the jumper wire and the spring probes.
[0014] Compared with the prior art, the utility model has the following beneficial effects:
[0015] By arranging a jumper wire on the scissor-type spring clamping mechanism of the utility model, when the two front ends of the spring clamping mechanism are clamped at the grooves of the relay seat, the two ends of the jumper wire respectively contact the tightening screws at the two wiring positions to be short-circuited on the relay seat, improving the reliability and operation convenience of the short circuit of the safety loop of the subway platform screen door. By using spring probes, it is ensured that the spring probes can correctly contact the tightening screws at the wiring positions during use, and the spring structure has a certain redundancy effect, which can effectively prevent the occurrence of poor contact. By adding an LED lamp to the jumper wire to display the connection state, it can effectively avoid the situation that the vehicle cannot enter the station due to the jumper wire not being connected in place and the safety loop being interrupted, effectively improving the reliability of the safety loop during the maintenance of the platform screen door. The short-circuit device of the utility model solves the problems that the prior jumper wire cannot intuitively display the short-circuit state and is easy to fall off. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] To more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.
[0017] Figure 1 It is a schematic structural diagram of a relay socket and a closing relay that need to be short-circuited when a fault occurs in the safety circuit of the subway platform screen door;
[0018] Figure 2 It is a schematic structural diagram of a short-circuiting device for the safety circuit of the subway platform screen door;
[0019] Figure 3 It is a schematic installation structure diagram of the short-circuiting device for the safety circuit of the subway platform screen door and the relay socket.
[0020] Explanation of the reference numerals:
[0021] 1. Spring clamping mechanism; 1-1. Tension spring; 1-2. Pressing plate; 1-3. Pressing protrusion; 1-4. Mounting bracket; 2. Short-circuit wire; 3. LED lamp; 4. Spring probe; 5. Relay socket; 5-1. No. 001 wiring position; 5-2. No. 005 wiring position; 5-3. Groove; 6. Closing relay. Detailed implementation manners
[0022] To enable those skilled in the art to better understand the technical solutions of the present utility model, the following will make a detailed description of the present utility model in conjunction with the drawings and specific embodiments.
[0023] As Figure 2 shown, a short-circuiting device for the safety circuit of the subway platform screen door includes a spring clamping mechanism 1 and a short-circuit wire 2. The spring clamping mechanism 1 is a scissor-type clamping mechanism, and its two front ends are clamped at the groove 5-3 of the relay socket 5. The short-circuit wire 2 is fixed on the spring clamping mechanism 1, and its two ends are respectively in contact with the compression screws of the two wiring positions on the relay socket 5 that need to be short-circuited. An LED lamp 3 is connected in series on the short-circuit wire 2. By adding the LED lamp 3 on the short-circuit wire 2 to display the connection state, it can effectively avoid the situation that the safety circuit is interrupted due to the short-circuit wire 2 not being connected properly and the vehicle cannot enter the station, and effectively improves the reliability of the safety circuit during the maintenance of the platform screen door. When the LED lamp 3 shows a conducting state, it means that the short-circuit is successful; when the LED lamp 3 is not lit, it means that the short-circuit is not successful.
[0024] As Figure 3As shown, spring probes 4 are provided at both ends of the short wire 2. The depth of penetration of the compression screw of each terminal is different and a certain redundancy is required. By using the spring probes 4, it is ensured that the spring probes 4 can correctly contact the compression screw at the wiring position during use, and the spring structure has a certain redundancy function, which can effectively prevent the occurrence of poor contact. In order to match the size of the relay socket 5, spring thimbles 4 with a diameter less than 5 mm are used. A tension spring 1-1 is provided in the middle of the two hinge parts of the spring clamping mechanism 1. The tension spring 1-1 can keep the spring clamping mechanism 1 stable and prevent it from falling off due to the vibration generated when the train passes. Pressing plates 1-2 are provided at the ends of the two hinge parts of the spring clamping mechanism 1. The width of the pressing plate 1-2 is greater than that of the hinge link in front of it. Serrated corrugations are provided on the stress surface of the pressing plate 1-2 to facilitate the pressing operation to loosen the clamping. Pressing protrusions 1-3 are provided at the front ends of the two hinge parts of the spring clamping mechanism 1. The pressing protrusions 1-3 are made of rubber material, which can improve the stability of the device. Mounting brackets 1-4 are provided on the sides of the two hinge parts of the spring clamping mechanism 1. The mounting brackets 1-4 are used to fix the short wire 2 and the spring probes 4. The mounting brackets 1-4 can be arranged on the same side or different sides of the spring clamping mechanism 1 according to the position of the wiring position to be short-circuited on the relay socket 5.
[0025] The working principle of the present utility model is as follows:
[0026] This device is a clip-type short-circuit device, and its principle is similar to that of a C-shaped clip. It is fixed at the groove 5-3 of the relay socket 5 by the clamping force. The top of the short wire 2 uses spring probes 4 to contact the terminals of the relay 6. An LED lamp 3 is installed in the middle of the short wire 2 to display the connection state. During use, it can be directly clipped at the groove 5-3 of the electrical socket 5, and the short wire 2 is inserted into the terminal wiring position. When the LED lamp 3 lights up, the safety circuit is established for connection.
[0027] In the present utility model, by arranging the short wire 2 on the scissor-type spring clamping mechanism 1, when the two front ends of the spring clamping mechanism 1 are clamped at the groove 5-3 of the relay socket 5, both ends of the short wire 2 are respectively in contact with the compression screws at the two wiring positions to be short-circuited on the relay socket 5, which improves the reliability and operation convenience of the short-circuit of the subway platform screen door safety circuit. By using the spring probes 4, it is ensured that the spring probes 4 can correctly contact the compression screws at the wiring position during use, and the spring structure has a certain redundancy function, which can effectively prevent the occurrence of poor contact. By adding an LED lamp 3 on the short wire 2 to display the connection state, it can effectively avoid the situation that the vehicle cannot enter the station due to the short wire 2 not being connected in place and the safety circuit being interrupted, and effectively improves the reliability of the safety circuit during the maintenance of the platform screen door. The short-circuit device of the present utility model solves the problems that the previous short wire cannot intuitively display the short-circuit state and is easy to fall off.
[0028] The above has described the embodiments of the present utility model in detail through examples. However, the content described above is only an exemplary embodiment of the embodiments of the present utility model and cannot be considered as being used to limit the scope of implementation of the embodiments of the present utility model. The protection scope of the embodiments of the present utility model is defined by the claims. All those who utilize the technical solutions described in the embodiments of the present utility model, or those skilled in the art inspired by the technical solutions in the embodiments of the present utility model, within the essence and protection scope of the embodiments of the present utility model, design similar technical solutions to achieve the above technical effects, or make equivalent changes and improvements to the scope of the application, etc., should still fall within the scope of patent coverage and protection of the embodiments of the present utility model.
Claims
1. A short-circuit device for a subway screen door safety circuit, characterized in that: The invention comprises a spring clamping mechanism (1) and a short-circuit wire (2). The spring clamping mechanism (1) is a scissor-type clamping mechanism, and its two front ends are clamped at the grooves (5-3) of the relay seat (5). The short-circuit wire (2) is fixed on the spring clamping mechanism (1), and its two ends are respectively in contact with the clamping screws of two wiring positions on the relay seat (5) that need to be short-circuited.
2. The short-circuit device for the subway screen door safety circuit according to claim 1, characterized in that: The short-circuit wire (2) is connected in series with an LED lamp (3).
3. The short-circuit device for the subway screen door safety circuit according to claim 1, characterized in that: Spring probes (4) are provided at the two ends of the short-circuit wire (2).
4. The short-circuit device for the subway screen door safety circuit according to claim 1, characterized in that: A tension spring (1-1) is provided in the middle of the two hinged parts of the spring clamping mechanism (1).
5. The short-circuit device for the subway screen door safety circuit according to claim 1, characterized in that: The ends of the two hinged parts of the spring clamping mechanism (1) are provided with pressing plates (1-2).
6. The short-circuit device for the subway screen door safety circuit according to claim 5, characterized in that: The width of the pressing plate (1-2) is greater than the hinged connecting rod in front of it.
7. The short-circuit device for the subway screen door safety circuit according to claim 5, characterized in that: The force-bearing surface of the pressing plate (1-2) is provided with sawtooth corrugations.
8. The short-circuit device for the subway screen door safety circuit according to claim 1, characterized in that: The front ends of the two hinged parts of the spring clamping mechanism (1) are provided with clamping protrusions (1-3), and the clamping protrusions (1-3) are made of rubber material.
9. The short-circuit device for the subway screen door safety circuit according to claim 1, characterized in that: Mounting frames (1-4) are provided on the sides of the two hinged parts of the spring clamping mechanism (1).