Escalator step sag detection device
By combining the tensioning mechanism, detection rope, and guide wheel assembly, the problems of traditional detection devices being unable to cover inclined sections and insufficient tension are solved, enabling the detection of step subsidence throughout the escalator path and improving safety and stability.
Patent Information
- Application Number
- CN202521850562.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-08-28
- Publication Date
- 2026-08-25
- Estimated Expiration
- 2035-08-28
AI Technical Summary
Traditional escalator step sinking detection devices cannot effectively cover inclined sections, and insufficient tension in the detection rope leads to detection failure, affecting safety and stability.
The system employs a tensioning mechanism, a detection rope, a triggering mechanism, and a guide wheel assembly. The tensioning mechanism adjusts the tension of the detection rope, and the guide wheel assembly enables comprehensive detection of sinking of all steps along the entire stairway. Combined with the triggering mechanism, the safety switch is quickly activated.
It enables comprehensive detection of escalator step subsidence, improves detection coverage and accuracy, ensures passenger safety, avoids detection failure caused by insufficient tension of the detection rope, and enhances the stability and reliability of the device.
Smart Images
Figure CN224677595U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of escalator step sagging detection technology, and in particular to an escalator step sagging detection device. Background Technology
[0002] With the rapid development of urban public transportation, escalators, as an important means of transportation connecting different floors, have been widely used in public places such as shopping malls, subway stations, and airports. However, during operation, due to various reasons such as broken step chains and worn step axles, escalators occasionally experience step sagging. Step sagging not only affects the normal operation of the escalator but can also cause serious injuries to passengers, such as falls and crushing injuries.
[0003] Traditional escalator safety detection devices often only detect step sagging in specific areas of the escalator (such as horizontal sections), failing to effectively cover critical areas like inclined sections. This means that when step sagging occurs in an inclined section, the detection device may not be able to trigger the safety protection mechanism in time, thus failing to effectively ensure passenger safety.
[0004] Furthermore, even if some detection devices can perform detection on inclined sections, their stability and reliability are still challenged due to factors such as the inclination angle and the tension of the detection rope. For example, the detection rope may become loose due to insufficient tension, leading to detection failure; or improper angle adjustment may affect the linear displacement of the wire rope, thereby affecting the triggering of the safety switch. Utility Model Content
[0005] In view of the above-mentioned shortcomings of the existing technology, the purpose of this utility model is to provide an escalator step sinking detection device, which has the advantage of being able to adjust the tension of the detection rope.
[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution:
[0007] An escalator step sagging detection device includes: a tensioning mechanism, a detection rope, and a triggering mechanism. The detection rope is located below the step and is connected to both the tensioning mechanism and the triggering mechanism. The tensioning mechanism is used to adjust the tension of the detection rope. A guide wheel assembly is provided between the tensioning mechanism and the triggering mechanism, and the detection rope passes through the guide wheel assembly.
[0008] Compared with existing technologies, this application achieves comprehensive detection of escalator step subsidence throughout the entire escalator route through a tensioning mechanism, detection rope, triggering mechanism, and guide wheel assembly, improving the detection coverage and accuracy, and effectively ensuring passenger safety. Secondly, the tensioning mechanism can adjust the tension of the detection rope, avoiding detection failure due to insufficient tension, and improving the stability and reliability of the detection device.
[0009] As a preferred embodiment of this utility model, the tensioning mechanism includes a tensioning fixing seat, a tensioning bolt, and a tensioning nut. The tensioning fixing seat is fixedly installed on the external structure. One end of the tensioning bolt is connected to the detection rope, and the other end passes through the tensioning fixing seat and is threadedly connected to the tensioning nut.
[0010] By adopting the above-mentioned scheme, through the combined design of tension fixing seat, tension bolt and tension nut, the tension of the detection rope can be precisely adjusted, thereby avoiding the problem of step sinking and detection failure due to insufficient tension of the detection rope, and effectively improving the stability and reliability of the detection device.
[0011] As a preferred embodiment of this utility model, the triggering mechanism includes a trigger fixing seat, a trigger plate, and a trigger switch. The trigger fixing seat is fixedly installed on the external structure. One end of the detection rope near the trigger fixing seat passes through the trigger fixing seat and is connected to the trigger plate. The trigger switch is located between the trigger fixing seat and the trigger plate.
[0012] By adopting the above scheme, when the steps sink and compress the detection rope, the trigger plate can be quickly linked to activate the trigger switch, thereby enabling the sinking of the steps to be detected at the first moment and issuing a detection signal in a timely manner. This provides support for subsequent elevator stop protection steps and effectively prevents the further escalation of the accident.
[0013] As a preferred embodiment of this utility model, a pre-tightening member is provided between the trigger plate and the trigger fixing seat, and the pre-tightening member is connected to both the trigger fixing seat and the trigger plate.
[0014] By adopting the above scheme, the stability and preload of the triggering mechanism in the initial state can be ensured, so that the trigger plate can accurately touch the trigger switch when subjected to the tension of the wire rope, thereby improving the sensitivity and reliability of the triggering mechanism.
[0015] As a preferred embodiment of this utility model, the trigger switch is a limit switch.
[0016] The above-mentioned solution uses limit switches as trigger switches. Taking advantage of their reliable operation, fast contact switching speed, and long service life, the safety circuit of the escalator can be quickly and accurately cut off when the steps sink, thereby improving the effectiveness of safety protection.
[0017] As a preferred embodiment of this utility model, the preload includes a spring.
[0018] The above-mentioned solution uses a spring as the preload element, which is simple in structure, low in cost and easy to replace. At the same time, it can provide a stable preload force, ensuring that the triggering mechanism maintains stable performance during long-term use, thus improving the durability and economy of the entire detection device.
[0019] As a preferred embodiment of the present invention, the guide wheel assembly includes a first guide wheel and a second guide wheel. Both the first guide wheel and the second guide wheel are connected to an external structure via a rotating shaft. The detection rope is located between the first guide wheel and the second guide wheel and contacts the first guide wheel and the second guide wheel respectively.
[0020] By adopting the above scheme, the guide wheel assembly, through the setting of the first guide wheel and the second guide wheel, achieves accurate guidance and limitation of the detection rope in the inclined section of the escalator, ensuring that the displacement of each straight segment of the detection rope is stretched in the predetermined straight direction, ensuring that the safety switch can be accurately triggered when the steps sink, and improving the accuracy and reliability of the detection.
[0021] The aforementioned escalator step sinking detection device has the following beneficial effects: through the cooperation of the detection rope, tensioning mechanism, guide wheel assembly, and triggering mechanism, it can detect the sinking of the entire escalator step in real time and accurately; secondly, the tensioning mechanism can effectively adjust the tension of the detection rope, effectively avoiding the problem of step sinking detection failure due to insufficient rope tension, thus improving the stability and reliability of the detection device. Attached Figure Description
[0022] Figure 1 This is a schematic diagram of the structure of an escalator step sagging detection device according to the present invention;
[0023] In the diagram: 1. Tensioning mechanism; 11. Tensioning fixing seat; 12. Tensioning bolt; 13. Tensioning nut; 2. Detection rope; 3. Triggering mechanism; 31. Trigger fixing seat; 32. Trigger plate; 33. Trigger switch; 34. Pre-tensioning component; 4. Guide wheel assembly; 41. First guide wheel; 42. Second guide wheel.
[0024] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation
[0025] 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.
[0026] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.
[0027] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.
[0028] This utility model proposes a device for detecting the sinking of escalator steps.
[0029] Reference Figure 1 In one embodiment of this utility model, an escalator step sagging detection device includes: a tensioning mechanism 1, a detection rope 2, and a triggering mechanism 3. The detection rope 2 is located below the step and is connected to both the tensioning mechanism 1 and the triggering mechanism 3. The tensioning mechanism 1 is used to adjust the tension of the detection rope 2. A guide wheel assembly 4 is provided between the tensioning mechanism 1 and the triggering mechanism 3, and the detection rope 2 passes through the guide wheel assembly 4. Through the tensioning mechanism 1, the detection rope 2, the triggering mechanism 3, and the guide wheel assembly 4, comprehensive detection of step sagging along the entire escalator path is achieved, improving the detection coverage and accuracy, and effectively ensuring passenger safety. Furthermore, the tensioning mechanism 1 can adjust the tension of the detection rope 2, avoiding detection failure due to insufficient tension, and improving the stability and reliability of the detection device.
[0030] Reference Figure 1In one embodiment, the tensioning mechanism 1 includes a tension fixing seat 11, a tension bolt 12, and a tension nut 13. The tension fixing seat 11 is fixedly installed on the external structure. In this embodiment, the tension fixing seat 11 is installed on the escalator truss by welding. In other embodiments, the tension fixing seat 11 can also be fixedly installed on the escalator truss or building structure by bolts, as long as the tension fixing seat 11 can be fixedly installed. One end of the tension bolt 12 is connected to the detection rope 2. In this embodiment, the detection rope 2 is a steel wire rope. A transverse hole is made in the tension bolt 12, and the steel wire rope is passed through the through hole and then connected to the tension bolt 12 by welding. In other embodiments, the connection between the steel wire rope and the tension bolt can also be as follows: one end of the steel wire rope is crimped to one end of the tension bolt 12 through a crimping sleeve, and the other end of the tension bolt 12 passes through the tension fixing seat 11 and is threadedly connected to the tension nut 13. By combining the tension fixing seat 11, tension bolt 12 and tension nut 13, the tension of the detection rope 2 can be precisely adjusted, thereby avoiding the problem of step sinking and detection failure due to insufficient tension of the detection rope 2, and effectively improving the stability and reliability of the detection device.
[0031] Reference Figure 1In one embodiment, the triggering mechanism 3 includes a trigger fixing seat 31, a trigger plate 32, and a trigger switch 33. The trigger fixing seat 31 is fixedly installed on the external structure. In this embodiment, the trigger fixing seat 31 is installed on the escalator truss by welding. In other embodiments, the trigger fixing seat 31 can also be fixedly installed on the escalator truss or building structure by bolts, as long as the trigger fixing seat 31 can be fixedly installed. The end of the detection rope 2 near the trigger fixing seat 31 passes through the trigger fixing seat 31 and is connected to the trigger plate 32. In this embodiment, the detection rope 2 is a steel wire rope. A hole is made in the trigger plate 32, and the steel wire rope is passed through the through hole and then welded to the trigger plate 32. In other embodiments, the connection between the trigger plate and the steel wire rope can also be done in the following way: a crimping sleeve is crimped to one end of the steel wire rope, and bolts are used to pass through the crimping sleeve and the trigger plate 32 respectively, and then fixed with nuts. A trigger switch 33 is disposed between the trigger fixing seat 31 and the trigger plate 32. In this embodiment, the trigger switch 33 is a limit switch, which is fixedly installed on the escalator truss by bolts and located between the trigger plate 32 and the trigger fixing seat 31. In other embodiments, the limit switch can also be installed in the building structure by bolts, as long as the limit switch is stable and the installation position of the limit switch can meet the requirement that the trigger plate 32 contacts the trigger element of the limit switch after being subjected to the tension of the wire rope, so as to activate the limit switch. A preload member 34 is provided between the trigger plate 32 and the trigger fixing seat 31. The preload member 34 is connected to the trigger fixing seat 31 and the trigger plate 32 respectively. In this embodiment, the preload member 34 is a pressure spring, and the two ends of the pressure spring are welded to the trigger fixing seat 31 and the trigger plate 32 respectively. In order to ensure the stability of the trigger plate 32 when subjected to the tension of the wire rope, the wire rope between the trigger plate 32 and the trigger fixing member must be on the axis of the pressure spring to ensure that the pressure spring will not be unbalanced during compression, which may cause damage to the pressure spring or the trigger switch 33. When the steps sink and compress the detection rope 2, the wire rope can quickly trigger the trigger plate 32 to activate the trigger switch 33, thereby detecting the sinking of the steps immediately and issuing a detection signal in a timely manner. This provides support for subsequent elevator stop protection procedures and effectively prevents the accident from escalating further. The pretensioner 34 ensures the stability and pretension force of the trigger mechanism 3 in its initial state, allowing the trigger plate 32 to accurately activate the trigger switch 33 when subjected to the tension of the wire rope, thus improving the sensitivity and reliability of the trigger mechanism 3. Secondly, using a spring as the pretensioner 34 results in a simple structure, low cost, and easy replacement, while providing a stable pretension force, ensuring that the trigger mechanism 3 maintains stable performance during long-term use, and improving the durability and economy of the entire detection device.Using a limit switch as the trigger switch 33, leveraging its advantages such as reliable operation, fast contact switching speed, and long service life, it can quickly and accurately cut off the escalator safety circuit when the steps sink, thereby improving the effectiveness of safety protection.
[0032] Reference Figure 1 In one embodiment, the guide wheel assembly 4 includes a first guide wheel 41 and a second guide wheel 42. In this embodiment, the guide wheel assembly 4 is configured in two sets. One set of guide wheel assemblies 4 is located near the tensioning mechanism 1, and the other set is located near the triggering assembly. The first guide wheel 41 and the second guide wheel 42 in both sets of guide wheel assemblies 4 are connected to the escalator truss via a rotating shaft. The detection rope 2 is located between the first guide wheel 41 and the second guide wheel 42 and is in contact with both the first guide wheel 41 and the second guide wheel 42 respectively. Through the arrangement of the first guide wheel 41 and the second guide wheel 42, the guide wheel assembly 4 achieves accurate guidance and limitation of the detection rope 2 in the inclined section of the escalator, ensuring that the displacement of each straight segment of the detection rope 2 is stretched in a predetermined straight direction. During the installation of the detection device, the inclination angle of the wire rope can be adjusted by adjusting the position of the first guide wheel 41 and the second guide wheel 42 to ensure that the inclination angle of the wire rope corresponds to the inclination angle of the inclined section of the escalator, ensuring that the safety switch can be accurately triggered when the steps sink, thus improving the accuracy and reliability of the detection.
[0033] The working principle of this application is as follows:
[0034] When an escalator step sinks due to a malfunction, the sinking step will touch the wire rope below the step, causing the wire rope to move downwards. At this time, the trigger plate 32 will be pulled closer to the trigger fixing seat 31 by the tension of the wire rope and trigger the limit switch, causing the limit switch to cut off the escalator's safety circuit and stop the escalator for protection. After the fault is cleared, the maintenance personnel manually reset the sinking step. The wire rope and trigger plate 32 will reset along with the step, and the pressure spring will return to its pre-compression state. At this time, the maintenance personnel can adjust the tension of the wire rope by turning the tension nut 13. Alternatively, if the maintenance personnel find that the wire rope needs to be adjusted for pre-tension during routine maintenance, they can also adjust the tension of the wire rope by turning the tension nut 13.
[0035] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.
Claims
1. A device for detecting step sagging in an escalator, characterized in that, include: The system includes a tensioning mechanism, a detection rope, and a triggering mechanism. The detection rope is located below the steps and is connected to both the tensioning mechanism and the triggering mechanism. The tensioning mechanism is used to adjust the tension of the detection rope. A guide wheel assembly is provided between the tensioning mechanism and the triggering mechanism, and the detection rope passes through the guide wheel assembly.
2. The escalator step sagging detection device according to claim 1, characterized in that: The tensioning mechanism includes a tensioning fixing seat, a tensioning bolt, and a tensioning nut. The tensioning fixing seat is fixedly installed on the external structure. One end of the tensioning bolt is connected to the detection rope, and the other end passes through the tensioning fixing seat and is threadedly connected to the tensioning nut.
3. The escalator step sagging detection device according to claim 1, characterized in that: The triggering mechanism includes a trigger fixing seat, a trigger plate, and a trigger switch. The trigger fixing seat is fixedly installed on the external structure. One end of the detection rope near the trigger fixing seat passes through the trigger fixing seat and is connected to the trigger plate. The trigger switch is located between the trigger fixing seat and the trigger plate.
4. The escalator step sagging detection device according to claim 3, characterized in that: A pre-tightening member is provided between the trigger plate and the trigger fixing seat, and the pre-tightening member is connected to both the trigger fixing seat and the trigger plate.
5. The escalator step sagging detection device according to claim 3, characterized in that: The trigger switch is a limit switch.
6. The escalator step sagging detection device according to claim 4, characterized in that: The preload includes a spring.
7. The escalator step sagging detection device according to claim 1, characterized in that: The guide wheel assembly includes a first guide wheel and a second guide wheel. Both the first guide wheel and the second guide wheel are connected to an external structure via a rotating shaft. The detection rope is located between the first guide wheel and the second guide wheel and contacts the first guide wheel and the second guide wheel respectively.