Anti-opening device for floor plate of escalator
By installing a parallel device of trigger switch and spring-loaded structure at the bottom of the escalator floor slab, the problem of floor slab safety device failure in the prior art is solved, enabling rapid escalator stoppage and improving safety.
Patent Information
- Application Number
- CN202520034639.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-07
- Publication Date
- 2026-01-06
- Estimated Expiration
- 2035-01-07
AI Technical Summary
The safety devices on the floor slabs of existing escalators are prone to failure after prolonged pressure, and may not be triggered in time, leading to safety hazards.
A floor slab anti-opening device was designed, including a trigger switch and a rebound structure. The device triggers the PESSRAE detection point of the escalator by pressing down on the floor slab, thereby quickly stopping the escalator. A parallel structure is adopted to ensure the sensitivity and reliability of the device.
This technology enables the escalator to stop quickly when the floor slab opens, improving safety and avoiding safety hazards caused by single-point failure of the device.
Smart Images

Figure CN223765865U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to an improvement of the safety device for escalators, specifically an anti-opening device for escalator floor slabs. Background Technology
[0002] An escalator is an inclined elevator that connects floors, offering a relatively free and convenient way to ride. Since the escalator itself is a passageway, users frequently use it. At both ends of the escalator passageway are floor slabs, flush with the building floor. These slabs are constructed from thin steel plates and reinforced layers welded together. The main working mechanism of the escalator is located beneath the floor slabs. Users experience inertia when using the escalator, and if a floor slab is accidentally opened, there is a safety risk. Therefore, safety devices are required. Opening a floor slab should stop the escalator. However, existing safety devices may fail after prolonged pressure, failing to trigger in time and creating potential safety hazards. Utility Model Content
[0003] The purpose of this utility model is to overcome the above-mentioned deficiencies in the prior art and to provide an anti-opening device for escalator floor panels.
[0004] The technical solution adopted by this utility model to solve the above problems is as follows: A floor slab anti-opening device is installed at the lower part of the floor slab. The floor slab support is installed on a side frame, and a front edge frame is provided at the front end of the side frame. The floor slab anti-opening device is installed on the front edge frame. The floor slab covers the side frame and simultaneously presses down on the floor anti-opening device. A trigger switch is provided on the floor anti-opening device. When the trigger switch is pressed down, the escalator PESSRAE detection point is connected. When the trigger switch is released, the escalator PESSRAE detection point is disconnected, and the escalator stops running. The anti-opening device is a PESSRAE detection device for escalators. Its main function is to disconnect the PESSRAE detection point when the floor slab is opened, stopping the escalator and halting the inertia of pedestrians on the escalator, thus preventing them from falling onto the floor slab. The design directly below the floor slab allows for fast triggering and good protective effect.
[0005] Furthermore, the floor anti-opening device includes an installation structure, a trigger switch, a rebound structure, and a support structure. The rebound structure is rotatably connected to the trigger switch, and the rebound structure is connected to the trigger switch via a tension spring. The trigger switch is fixed to the installation structure. The rebound structure is located above the trigger switch and is positioned higher than the installation structure. A support structure is fixedly installed on the installation structure, supporting the bottom of the floor slab. The installation structure is the main fixing structure, on which the trigger switch and the triggering rebound structure are mounted. It also provides support against downward pressure on the floor slab, preventing excessive pressure from damaging the rebound structure.
[0006] Furthermore, the mounting structure includes a vertical fixing plate and an adjustable mounting plate. The vertical fixing plate and the adjustable mounting plate are integrally bent from sheet metal. A trigger switch is fixedly mounted on the surface of the vertical fixing plate. The adjustable mounting plate has a vertically oriented elongated hole, which allows it to be mounted on the front edge frame at an adjustable distance on the front edge. The vertical fixing plate provides a mounting base for the trigger switch, and the adjustable mounting plate with the elongated hole allows for vertical height adjustment to achieve a good triggering effect.
[0007] Furthermore, trigger switches and spring-loaded mechanisms are installed on both sides of the vertical fixing plate. Both sets of trigger switches and spring-loaded mechanisms are simultaneously pressed down by the floor slab and are connected in parallel in the escalator PESSRAE safety device. The trigger switches and spring-loaded mechanisms are configured as two sets, both functioning simultaneously and in parallel. If any one set is triggered, the escalator stops operating, avoiding the problem of failure if one set malfunctions.
[0008] Furthermore, the supporting structure and the mounting structure are integrally bent and formed, with the supporting structure forming a horizontal supporting surface on top of the mounting structure. The supporting structure is a bent structure, which is easy to process and utilizes the strength of its own material, resulting in a compact structure.
[0009] Compared with the prior art, this utility model has the following advantages and effects: This design is a safety triggering device for preventing the floor slab of an escalator from opening. When the floor slab is opened, it can trigger the PESSRAE detection point of the escalator, causing the escalator to stop quickly and playing a good safety role. It adopts two sets of triggering devices, which have high triggering sensitivity and good safety. Attached Figure Description
[0010] Figure 1 This is a schematic diagram of the floor anti-opening device.
[0011] Figure 2 This is a schematic diagram showing the installation location of the floor anti-opening device.
[0012] Figure 3 This is a schematic diagram showing the installation location of the anti-opening device on another floor.
[0013] In the diagram: 1. Side frame, 2. Front frame, 3. Trigger switch, 4. Floor anti-opening device, 5. Installation structure, 6. Rebound structure, 7. Support structure, 8. Vertical fixing plate, 9. Adjustable mounting plate, 10. Oblong hole. Detailed Implementation
[0014] The present invention will be further described in detail below with reference to the accompanying drawings and through embodiments. The following embodiments are explanations of the present invention, but the present invention is not limited to the following embodiments.
[0015] An anti-opening device for escalator floor slabs is provided. The anti-opening device is installed at the lower part of the floor slab, which is supported on a side frame 1. A front edge frame 2 is provided at the front end of the side frame 1. The anti-opening device is installed on the front edge frame 2. The floor slab covers the side frame 1 and simultaneously presses down on the anti-opening device 4. A trigger switch 3 is provided on the anti-opening device 4. When the trigger switch 3 is pressed down, the PESSRAE detection point of the escalator is connected. When the trigger switch 3 is released, the PESSRAE detection point of the escalator is disconnected, and the escalator stops running.
[0016] The floor anti-opening device 4 includes an installation structure 5, a trigger switch 3, a spring-loaded structure 6, and a support structure 7. The spring-loaded structure 6 is rotatably connected to the trigger switch 3 and is connected to the trigger switch 3 via a tension spring. The trigger switch 3 is fixed on the installation structure 5. The spring-loaded structure 6 is located above the trigger switch 3 and is set higher than the installation structure 5. The support structure 7 is fixedly installed on the installation structure 5 and is supported at the bottom of the floor slab.
[0017] The installation structure 5 includes a vertical fixing plate 8 and an adjusting mounting plate 9. The vertical fixing plate 8 and the adjusting mounting plate are integrally bent from sheet metal. A trigger switch 3 is fixedly installed on the surface of the vertical fixing plate 8. A vertically arranged elongated hole 10 is formed on the adjusting mounting plate 9. The adjusting mounting plate 9 is installed on the front edge frame 2 through the adjustable distance of the elongated hole 10.
[0018] Both sides of the vertical fixing plate 8 are equipped with trigger switches 3 and spring-loaded structures 6. Both sets of trigger switches 3 and spring-loaded structures 6 are simultaneously pressed down by the floor slab and are connected in parallel in the escalator PESSRAE safety device.
[0019] The support structure 7 is integrally bent and formed with the mounting structure 5, and the support structure 7 forms a horizontal support surface on the top of the mounting structure 5.
[0020] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered exemplary rather than restrictive in all respects. The scope of this invention is defined by the claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.
[0021] Furthermore, it should be understood that although this specification describes the embodiments, not every embodiment contains only one independent technical solution. This description method is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.
Claims
1. An escalator step opening prevention device, characterized by: The floor board anti-opening device is arranged at the lower part of the floor board, the floor board support is arranged on the side frame (1), the front end of the side frame (1) is provided with a front frame (2), the floor board anti-opening device is installed on the front frame (2), the floor board covers the side frame (1) and simultaneously presses down the floor anti-opening device (4), the trigger switch (3) is arranged on the floor anti-opening device (4), when the trigger switch (3) is pressed down, the escalator PESSRAE detection point is connected, when the trigger switch (3) is popped up, the escalator PESSRAE detection point is disconnected, and the escalator stops running.
2. The automatic stairway floor panel anti-opening device according to claim 1, characterized in that: The floor anti-opening device (4) comprises a mounting structure (5), a trigger switch (3), a rebound structure (6) and a support structure (7), the rebound structure (6) is rotatably connected to the trigger switch (3), the rebound structure (6) is connected with the trigger switch (3) through a tension spring, the trigger switch (3) is fixed on the mounting structure (5), the rebound structure (6) is located at the upper part of the trigger switch (3) and is arranged higher than the mounting structure (5), the support structure (7) is fixedly arranged on the mounting structure (5) and is supported at the bottom of the floor board.
3. A stairway deck opening preventing device according to claim 2, characterized in that: The mounting structure (5) comprises a vertical fixing plate (8) and an adjusting mounting plate (9), the vertical fixing plate (8) is integrally bent and formed with the adjusting mounting plate (9), the trigger switch (3) is fixedly installed on the surface of the vertical fixing plate (8), the adjusting mounting plate (9) is integrally bent and formed with the vertical fixing plate (8), the adjusting mounting plate (9) is integrally bent and formed with the vertical fixing plate (8), the adjusting mounting plate (9) is integrally bent and formed with the vertical fixing plate (8), the adjusting mounting plate (9) is integrally bent and formed with the vertical fixing plate (8), the adjusting mounting plate (9) is integrally bent and formed with the vertical fixing plate (8), the adjusting mounting plate (9) is integrally bent and formed with the vertical fixing plate (8), the adjusting mounting 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with the vertical fixing plate (8), the adjusting 4. The automatic stairway floorboard anti-opening device according to claim 3, characterized in that: 5. A staircase landing board anti-opening device according to claim 4, characterized in that: