Fixed door device for use in a metro safety door system
By introducing connecting components of a fixed plate, an L-shaped plate, and a placement box into the subway safety door system, the problem of difficult replacement of signs in the fixed door device is solved, enabling quick replacement and cleaning of signs and facilitating worker operation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- TIANJIN ZHONGRAIL URBAN CONTROL TECH CO LTD
- Filing Date
- 2025-09-02
- Publication Date
- 2026-07-21
AI Technical Summary
When replacing warning signs on the fixed door devices in the subway safety door system, the signs are difficult to remove, and adhesive residue remains after removal, making cleaning difficult and affecting replacement efficiency.
The design incorporates a connecting assembly consisting of a fixing plate, an L-shaped plate, and a placement box. Through the cooperation of fixing bolts and springs, the signboard can be quickly replaced. The clamping structure and sliding groove design of the placement box simplify the process of disassembling and assembling the signboard.
It enables rapid replacement and cleaning of signs, simplifies the worker's operation process, and improves replacement efficiency and cleaning convenience.
Smart Images

Figure CN224532568U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of subway safety door technology, and more specifically to a fixed door device used in a subway safety door system. Background Technology
[0002] Subway safety doors (also known as platform screen doors or station doors) are electromechanical integrated safety facilities installed on the edge of rail transit platforms. They physically isolate the platform from the track area, preventing passengers from falling onto the tracks and improving the safety of the waiting environment. In the subway safety door system, fixed doors are non-openable safety glass doors installed between sliding doors and between sliding doors and end doors, serving as a barrier to isolate and seal the station from the tunnel section.
[0003] The existing technology has the following problems:
[0004] In the current subway safety gate system, the fixed door device has an overly simple overall structure. Warning signs are usually pasted on the glass to remind passengers. After long-term use, when the warning signs become damaged, aged, or need to be replaced, the old signs need to be torn off. Warning signs that are firmly pasted are not easy for workers to remove, and there may be residue stuck to the glass after removal, making cleaning difficult. This operation is quite troublesome and laborious, which makes it inconvenient to quickly replace warning signs.
[0005] Therefore, we need fixed door devices for subway safety door systems to solve the above problems. Utility Model Content
[0006] This utility model provides a fixed door device for use in subway safety door systems to solve the problems mentioned in the background art.
[0007] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:
[0008] A fixed door device for a subway safety door system includes two fixed doors. The outer surfaces of the two fixed doors are fixedly connected to a fixed frame. The rear sides of the two fixed doors are slidably connected to a sliding door. The front center of the two fixed doors is mirror-fixed to two connecting components. The two fixed doors and the sliding doors are respectively composed of a frame and glass.
[0009] The connecting components on the left and right sides each include a fixing plate, an L-shaped plate, and a placement box. The fixing plate has a placement groove on the right side of its front side. The rear side of the fixing plate is slidably connected to the surface of the L-shaped plate. The interior of the placement groove forms a clamping area with the outer surface of the L-shaped plate in the front and rear horizontal direction. Anti-detachment blocks are fixedly connected to the middle of the left and right sides of the placement box. The inner wall of the placement groove and the opposite surface of the L-shaped plate in the front and rear horizontal direction are both provided with grooves.
[0010] A further improvement of this utility model is that the interior of the groove corresponds to the outer surface of the anti-detachment block, and the interior of the groove is inserted into the outer surface of the anti-detachment block.
[0011] A further improvement of this utility model is that: a sliding groove is provided in the center of the front of the placement groove, and anti-detachment grooves are provided in the center of the upper and lower parts of the inner wall of the sliding groove. A cross-shaped block is slidably connected inside the sliding groove and the anti-detachment groove, and the rear side of the cross-shaped block is fixedly connected to the surface of the L-shaped plate in the horizontal direction.
[0012] A further improvement of this utility model is that a connecting plate is fixedly connected to the middle right side of the L-shaped plate, and threaded holes are opened on the middle front of the connecting plate and the upper left side of the front of the fixing plate.
[0013] A further improvement of this utility model is that: two mounting blocks are provided on the outer surfaces of the fixing plate and the L-shaped plate, and the rear sides of the two mounting blocks are respectively fixedly connected to the frame surface in the fixing door.
[0014] A further improvement of this utility model is that: a limiting groove is provided on the front side of the upper surface of the left and right mounting blocks, and the interior of the left and right limiting grooves corresponds to the outer surface of the fixing plate and the connecting plate, respectively. A fixing bolt is movably connected through the upper front of the left and right mounting blocks, and the outer surface of the two fixing bolts is threadedly connected to the threaded hole in the fixing plate and the connecting plate, respectively.
[0015] A further improvement of this utility model is that: a spring is fixedly connected to the middle of the left side of the L-shaped plate in the horizontal direction, and a second mounting block is fixedly connected to the left end of the spring; the front side of the second mounting block is fixedly connected to the rear side of the fixed plate.
[0016] A further improvement of this utility model is that: the front of the placement box has a sign placement opening, and several signs are arranged inside the sign placement opening. Several strip-shaped grooves are formed on the upper and lower surfaces and the left side of the inner wall of the sign placement opening, and the interiors of the several signs are slidably connected to the interiors of the strip-shaped grooves.
[0017] Due to the adoption of the above technical solution, the technological progress achieved by this utility model compared to the prior art is as follows:
[0018] This utility model provides a fixed door device for a subway safety door system. The placement box facilitates the placement of signs. By rotating the right-side fixing bolt, the connecting plate is pulled, causing the L-shaped plate and spring to loosen the placement box, and then the first sign can be pulled out. Through the cooperation of this structure, the placement box is clamped and fixed while the sign can be replaced. In addition, by loosening the two fixing bolts and moving the fixing plate and connecting plate upwards and separating them from the inside of the two limiting grooves, the overall structural components can be easily disassembled. This structure facilitates the quick replacement of warning signs on the signs, making it convenient for workers to operate. Attached Figure Description
[0019] Figure 1 This is a schematic diagram of the structure of this utility model;
[0020] Figure 2 This is a schematic diagram of the front structure of the connecting component of this utility model;
[0021] Figure 3 This is a schematic diagram of the rear structure of the connecting component of this utility model;
[0022] Figure 4 This is an exploded structural diagram of the placement box, fixing plate, L-shaped plate, and mounting block of this utility model;
[0023] Figure 5 This is an exploded structural diagram of the fixing plate and L-shaped plate of this utility model;
[0024] Figure 6 This is an exploded structural diagram of the placement box and signage of this utility model;
[0025] Figure 7 This is an enlarged structural diagram of point A of this utility model.
[0026] In the diagram: 1. Fixed door; 2. Fixed frame; 3. Sliding door; 4. Connecting assembly; 41. Fixed plate; 42. Placement groove; 43. Slide groove; 431. Anti-detachment groove; 44. Cross-shaped block; 45. L-shaped plate; 451. Spring; 452. Mounting block two; 46. Connecting plate; 47. Placement box; 471. Sign placement opening; 472. Sign; 473. Strip groove; 48. Anti-detachment block; 49. Groove; 410. Mounting block one; 411. Limiting groove; 412. Fixing bolt. Detailed Implementation
[0027] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.
[0028] Example 1: As Figures 1 to 7As shown, this utility model provides a fixed door device for a subway safety door system, including a fixed door 1. Two fixed doors 1 are provided. A fixed frame 2 is fixedly connected to the outer surface of the two fixed doors 1. A sliding door 3 is slidably connected to the rear side of each of the two fixed doors 1. The sliding door 3 is used to achieve a closed or open state. In addition, the sliding door 3 is prior art and will not be described in detail here. Two connecting components 4 are fixedly connected to the center of the front of the two fixed doors 1 in a mirror image. The connecting components 4 facilitate the quick replacement of warning signs. The two fixed doors 1 and the sliding door 3 are composed of a frame and glass, respectively.
[0029] Example 2: Figures 1 to 7 As shown, both the left and right connecting components 4 include a fixing plate 41, an L-shaped plate 45, and a placement box 47. A placement groove 42 is provided on the right side of the front of the fixing plate 41, facilitating the installation of the placement box 47. The rear side of the fixing plate 41 is slidably connected to the surface of the L-shaped plate 45. The interior of the placement groove 42 and the outer surface of the L-shaped plate 45 in the front and rear horizontal directions form a clamping area. This clamping area design ensures that the placement box 47 is clamped and fixed after placement. The middle of both the left and right sides of the placement box 47 are fixed. The placement groove 42, connected to the anti-detachment block 48, has grooves 49 on its inner wall and the horizontal surfaces of the L-shaped plate 45. The interior of each groove 49 corresponds to the outer surface of the anti-detachment block 48, and they are inserted into each other. Through this interlocking structure, the anti-detachment block 48 can be placed inside the groove 49 during use, ensuring stability of the placement box 47 and preventing it from falling downwards. A sliding groove 43 is provided in the center of the front of the placement groove 42, and grooves 49 are provided in the center of the upper and lower parts of the inner wall of the sliding groove 43. An anti-detachment groove 431 is provided. A cross-shaped block 44 is slidably connected inside the sliding groove 43 and the anti-detachment groove 431. The rear side of the cross-shaped block 44 is fixedly connected to the horizontal surface of the L-shaped plate 45. Through the cooperation of this structure, the cross-shaped block 44 can slide left and right within the sliding groove 43 and the anti-detachment groove 431, thereby realizing the sliding relationship between the L-shaped plate 45 and the fixed plate 41. At the same time as sliding, the anti-detachment groove 431 can prevent the cross-shaped block 44 from falling out, ensuring the stability of the connection. A connecting rod is fixedly connected to the middle right side of the L-shaped plate 45. The connecting plate 46 acts as a handle, and pulling the connecting plate 46 moves the L-shaped plate 45, making it easy to place the placement box 47 in the clamping area for clamping and fixing. Threaded holes are provided on the center of the front of the connecting plate 46 and the upper left side of the front of the fixing plate 41. The design of the threaded holes facilitates the rotation limit of the fixing bolt 412 in the subsequent structure. Two mounting blocks 410 are provided on the outer surface of the fixing plate 41 and the L-shaped plate 45. The rear sides of the two mounting blocks 410 are fixedly connected to the frame surface in the fixing door 1.
[0030] In addition, an L-shaped groove is provided on the left side of the front of the fixing plate 41. The threaded hole in the fixing plate 41 is opened inside the L-shaped groove. The L-shaped groove facilitates the placement of the limiting groove 411 in the left mounting block 410, so as to prevent the fixing plate 41 from being unable to be inserted when its thickness is too large.
[0031] Example 3: Figures 1 to 7 As shown, the upper surface of the left and right mounting blocks 410 is provided with limiting grooves 411. The two limiting grooves 411 facilitate the placement of the fixing plate 41 and the connecting plate 46. The interior of the left and right limiting grooves 411 corresponds to the outer surface of the fixing plate 41 and the connecting plate 46, respectively. The upper front of the left and right mounting blocks 410 is movably connected with fixing bolts 412. The outer surface of the two fixing bolts 412 is threadedly connected to the threaded holes in the fixing plate 41 and the connecting plate 46, respectively. The design of the fixing bolts 412 and the threaded holes facilitates the loading and unloading of the fixing plate 41, the L-shaped plate 45 and the two mounting blocks 410.
[0032] A spring 451 is fixedly connected to the middle of the left side of the L-shaped plate 45 in the horizontal direction. The spring 451 is designed to stretch when the L-shaped plate 45 moves. When the L-shaped plate 45 is released, the elasticity of the spring 451 provides a stable clamping effect on the placement box 47. A second mounting block 452 is fixedly connected to the left end of the spring 451. The front side of the second mounting block 452 is fixedly connected to the rear side of the fixed plate 41. The second mounting block 452 facilitates the installation and fixation of the spring 451.
[0033] Example 4: Figures 1 to 7 As shown, the front of the placement box 47 has a sign placement opening 471. Through the sign placement opening 471, several signs 472 can be placed inside, facilitating the removal of the foremost sign 472 and exposing the new sign 472 behind it for quick replacement. The sign placement opening 471 contains several signs 472, the surfaces of which are suitable for writing warning signs to remind passengers. The inner walls of the sign placement opening 471 have several strip grooves 473 on the upper and lower surfaces and the left side. The interior of each sign 472 slides into the strip groove 473, allowing for easy insertion and removal of the signs 472, while also limiting their movement to prevent them from shaking or falling off.
[0034] Working principle: When it is necessary to replace the sign 472, firstly, rotate the right fixing bolt 412 to loosen the fixing bolt 412 from the connecting plate 46. Then, the worker pulls the connecting plate 46 to move the L-shaped plate 45 and pull the spring 451 to stretch, so that the clamping area is in the open state. Next, the placement box 47 is moved out of the clamping area. Then, the worker pulls out the first sign 472 and separates it from the inside of the placement box 47, so that the rear signs 472 can be exposed to achieve the effect of quick replacement. Then, by pulling the L-shaped plate 45 to move the spring 451, the clamping area is opened, and the placement box 47 is placed in its original position. The connecting plate 46 is loosened. Due to the action of the spring 451, it is easy to clamp and fix the placement box 47. Then, rotate the right fixing bolt 412 to lock and fix the connecting plate 46.
[0035] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the protection scope of the present invention.
Claims
1. A fixed door device for use in a subway safety door system, comprising a fixed door (1), characterized in that: There are two fixed doors (1). The outer surfaces of the two fixed doors (1) are fixedly connected to a fixed frame (2). The rear sides of the two fixed doors (1) are slidably connected to a sliding door (3). The front center of the two fixed doors (1) is mirror-fixed to two connecting components (4). The two fixed doors (1) and the sliding door (3) are respectively composed of a frame and glass. The connecting components (4) on the left and right sides each include a fixing plate (41), an L-shaped plate (45), and a placement box (47). The fixing plate (41) has a placement groove (42) on the right side of its front side. The rear side of the fixing plate (41) is slidably connected to the surface of the L-shaped plate (45). The interior of the placement groove (42) forms a clamping area with the outer surface of the L-shaped plate (45) in the front and rear horizontal direction. Anti-detachment blocks (48) are fixedly connected to the middle of the left and right sides of the placement box (47). The inner wall of the placement groove (42) and the opposite surface of the L-shaped plate (45) in the front and rear horizontal direction are provided with grooves (49).
2. The fixed door device for a subway safety door system according to claim 1, characterized in that: The interior of the groove (49) corresponds to the outer surface of the anti-detachment block (48), and the interior of the groove (49) is inserted into the outer surface of the anti-detachment block (48).
3. The fixed door device for a subway safety door system according to claim 1, characterized in that: The placement groove (42) has a sliding groove (43) in the center of the front side. The inner wall of the sliding groove (43) has anti-detachment grooves (431) in the center of the upper and lower sides. The sliding groove (43) and the anti-detachment groove (431) are slidably connected to a cross-shaped block (44). The rear side of the cross-shaped block (44) is fixedly connected to the horizontal surface of the L-shaped plate (45).
4. The fixed door device for a subway safety door system according to claim 1, characterized in that: A connecting plate (46) is fixedly connected to the middle right side of the L-shaped plate (45), and threaded holes are opened on the middle front of the connecting plate (46) and the upper left side of the front of the fixing plate (41).
5. The fixed door device for a subway safety door system according to claim 1, characterized in that: The outer surfaces of the fixing plate (41) and the L-shaped plate (45) are provided with two mounting blocks (410), and the rear sides of the two mounting blocks (410) are respectively fixedly connected to the frame surface in the fixing door (1).
6. The fixed door device for a subway safety door system according to claim 5, characterized in that: Each of the left and right mounting blocks (410) has a limiting groove (411) on the front side of its upper surface. The interior of the limiting groove (411) corresponds to the outer surface of the fixing plate (41) and the connecting plate (46), respectively. Each of the left and right mounting blocks (410) has a fixing bolt (412) that is movably connected through the front top. The outer surfaces of the two fixing bolts (412) are threadedly connected to the threaded holes in the fixing plate (41) and the connecting plate (46), respectively.
7. The fixed door device for a subway safety door system according to claim 1, characterized in that: A spring (451) is fixedly connected to the middle of the left side of the L-shaped plate (45) in the horizontal direction. A second mounting block (452) is fixedly connected to the left end of the spring (451). The front side of the second mounting block (452) is fixedly connected to the rear side of the fixing plate (41).
8. The fixed door device for a subway safety door system according to claim 1, characterized in that: The front of the placement box (47) is provided with a sign placement opening (471). Several signs (472) are arranged inside the sign placement opening (471). Several strip grooves (473) are provided on the upper and lower surfaces and the left side of the inner wall of the sign placement opening (471). The interior of several signs (472) is slidably connected to the interior of the strip grooves (473).