Simple escalator step missing detection device
The mechanical limit switch detects the missing steps of the escalator and cuts off the safety circuit, which solves the problems of existing devices being susceptible to interference and high maintenance costs, and achieves fast and stable detection of missing steps, ensuring passenger safety and reducing maintenance costs.
Patent Information
- Application Number
- CN202421138523.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-23
- Publication Date
- 2025-01-03
- Estimated Expiration
- 2034-05-23
AI Technical Summary
The existing escalator step missing detection devices are susceptible to environmental interference and have high maintenance costs. The old ladder urgently needs to be equipped with detection functions, which lacks effective solutions, resulting in safety hazards.
The mechanical limit switch is used to monitor the status of the rung in real time. Through close contact with the rung, the mechanical limit switch action is triggered when it is detected, and the safety circuit is cut off to stop the escalator from running. The device structure is simple and stable, and it is easy to install and maintain.
It realizes rapid detection of missing steps, ensures passenger safety, reduces maintenance costs, provides more comprehensive safety guarantees, is not susceptible to environmental interference, has a fast response speed, and is simple in the device structure.
Smart Images
Figure CN222293341U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of escalators, in particular to a simple escalator step missing detection device. Background Art
[0002] As an indispensable means of transportation in modern urban life, the safety of escalators is of vital importance. However, in actual operation, escalators sometimes have missing steps, which poses a safety hazard to passengers. Most of the existing missing step detection devices rely on photoelectric sensing technology. Although they have high sensitivity, they are easily affected by the environment and have high maintenance costs. In addition, those old escalators that have been installed urgently need to be equipped with missing step detection functions, but there is no good solution. Therefore, it is of great practical significance to develop a more stable and reliable mechanical switch type escalator missing step detection device. Utility Model Content
[0003] The utility model aims to provide a simple escalator step missing detection device, which monitors the step status of the escalator in real time through a mechanical limit switch. When a step missing is detected, the mechanical limit switch can be triggered to forcefully cut off the safety circuit to stop the escalator and ensure the safety of passengers.
[0004] The technical solution of the utility model is:
[0005] A simple escalator step missing detection device comprises a mechanical limit switch, the mechanical limit switch is connected to the safety circuit of the escalator, the mechanical limit switch is installed on the side bracket of the comb plate, and ensures that the mechanical limit switch is in close contact with the upper edge of the step;
[0006] During the operation of the escalator, the mechanical limit switch is in close contact with the side of the step and remains in a closed state; when the missing step is detected, the mechanical limit switch loses contact with the step, triggering the mechanical limit switch to operate, cutting off the safety circuit and stopping the escalator.
[0007] Preferably, the mechanical limit switch is fixed to a limit switch bracket, and the limit switch bracket is mounted on a side bracket of the comb plate via a mounting bracket.
[0008] Preferably, the contact terminal of the mechanical limit switch in close contact with the step has a pre-compression deformation of 5-15 mm.
[0009] Preferably, the number of the mechanical limit switches is four, which are respectively installed on the left and right side brackets of the comb plates at the upper and lower parts of the escalator.
[0010] Preferably, the four mechanical limit switches are connected to the safety circuit of the escalator through cables respectively. If any one of the mechanical limit switches loses contact with the steps, the safety circuit is cut off, causing the escalator to stop running.
[0011] Preferably, the mechanical limit switch is fixed to the limit switch bracket by bolts and nuts, and at least one of a flat washer and a spring washer is placed between the bolts, nuts and the limit switch bracket.
[0012] Preferably, the mounting bracket is an L-shaped plate, one end of which is fixed to the limit switch bracket by bolts and nuts, and the other end is fixed to the side bracket of the comb plate by bolts and nuts; at least one of a flat washer and a spring washer is placed between each group of bolts, nuts and the mounting bracket.
[0013] The advantages of the utility model are:
[0014] The escalator step missing detection device proposed by the utility model adopts a mechanical switch limit switch to monitor the step status of the escalator in real time. When the step missing is detected, the mechanical limit switch can be triggered to forcibly cut off the safety circuit to stop the escalator, thereby ensuring the safety of passengers. The device has a simple structure, high stability, and is not easily affected by environmental interference; the response speed is fast, and the step missing situation can be detected quickly; the maintenance cost is low, and it is easy to install, add and debug; it can be conveniently connected in series with the safety circuit to achieve more comprehensive safety protection. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] The utility model is further described below in conjunction with the accompanying drawings and embodiments:
[0016] Figure 1 It is a front view of the escalator step missing detection device of the utility model;
[0017] Figure 2 It is a top view of the escalator step missing detection device of the present utility model. DETAILED DESCRIPTION
[0018] like Figure 1 , 2 As shown, the escalator step missing detection device of the utility model includes a mechanical limit switch 1, which is connected to the safety circuit of the escalator. The mechanical limit switch 1 is installed on the side bracket 2 of the comb plate to ensure that the mechanical limit switch 1 is in close contact with the upper edge of the step 3, and the contact terminal has a pre-compression deformation of 10mm.
[0019] The mechanical limit switch 1 is fixed to the limit switch bracket 4 , and the limit switch bracket 4 is mounted on the comb plate side bracket 2 through the mounting bracket 5 .
[0020] The mechanical limit switch 1 is fixed to the limit switch bracket 4 by bolts and nuts, and at least one of a flat washer and a spring washer is placed between the bolts, nuts and the limit switch bracket 4.
[0021] The mounting bracket 5 is an L-shaped plate, one end of which is fixed to the limit switch bracket 4 by bolts and nuts, and the other end is fixed to the comb plate side bracket 2 by bolts and nuts; at least one of a flat washer and a spring washer is placed between each group of bolts, nuts and the mounting bracket.
[0022] During the operation of the escalator, the mechanical limit switch 1 is in close contact with the upper edge of the side of the step 3 and remains in a closed state; when the missing of the step 3 is detected, the mechanical limit switch 1 loses contact with the step 3, triggering the mechanical limit switch 1 to operate, cutting off the safety circuit and stopping the escalator.
[0023] In a specific implementation, the number of the mechanical limit switches 1 is 4, which are respectively installed on the left and right brackets of the comb plates at the upper and lower parts of the escalator. The four mechanical limit switches 1 are respectively connected to the safety circuit of the escalator through cables. If any mechanical limit switch 1 loses contact with the steps, the safety circuit is cut off, causing the escalator to stop running.
[0024] The above embodiments are only for illustrating the technical concept and features of the utility model, and their purpose is to enable people familiar with the technology to understand the content of the utility model and implement it accordingly, and they cannot be used to limit the protection scope of the utility model. Any modifications made according to the spirit of the main technical solution of the utility model should be included in the protection scope of the utility model.
Claims
1. A simple escalator step missing detection device, characterized in that: It includes a mechanical limit switch, which is connected to the safety circuit of the escalator and is installed on the side bracket of the comb plate to ensure that the mechanical limit switch is in close contact with the upper edge of the step; During the operation of the escalator, the mechanical limit switch is in close contact with the side of the step and remains in a closed state; when the missing step is detected, the mechanical limit switch loses contact with the step, triggering the mechanical limit switch to operate, cutting off the safety circuit and stopping the escalator.
2. The escalator step missing detection device according to claim 1, characterized in that: The mechanical limit switch is fixed to the limit switch bracket, and the limit switch bracket is installed on the side bracket of the comb plate through the mounting bracket.
3. The escalator step missing detection device according to claim 2, characterized in that: The contact terminal of the mechanical limit switch in close contact with the step has a pre-compression deformation of 5-15 mm.
4. The escalator step missing detection device according to claim 2, characterized in that: There are four mechanical limit switches, which are respectively installed on the left and right brackets of the comb plates at the upper and lower parts of the escalator.
5. The escalator step missing detection device according to claim 4, characterized in that: The four mechanical limit switches are connected to the safety circuit of the escalator through cables. If any mechanical limit switch loses contact with the steps, the safety circuit will be cut off and the escalator will stop running.
6. The escalator step missing detection device according to claim 2, characterized in that: The mechanical limit switch is fixed to the limit switch bracket by bolts and nuts, and at least one of a flat washer and a spring washer is placed between the bolts, nuts and the limit switch bracket.
7. The escalator step missing detection device according to claim 6, characterized in that: The mounting bracket is an L-shaped plate, one end of which is fixed to the limit switch bracket by bolts and nuts, and the other end is fixed to the side bracket of the comb plate by bolts and nuts; at least one of a flat washer and a spring washer is placed between each group of bolts, nuts and the mounting bracket.