Escalator with abnormal state early warning device of comb plate and step engagement

Abstract

The utility model relates to the technical field of escalator, specifically disclose a kind of escalator with comb plate and step engagement abnormal state early warning device, comprising: step, it is the main pedal of escalator, the concave-convex structure of step surface is engaged with the tooth slot of the comb tooth structure of comb plate body.This escalator with comb plate and step engagement abnormal state early warning device, the multi-dimension monitoring structure of the device through integrated sensor, i.e. the characteristic sound spectrum of the friction generated by flexible or small foreign matter and comb tooth, step can be captured by sound sensor, acceleration sensor can perceive the slight vibration acceleration change caused by this kind of foreign matter, without waiting for the obvious displacement of comb plate, it can be identified in advance abnormality, the device can real-time monitoring comb plate and step engagement state, abnormal state appears in time early warning, timely processing, greatly reduce the probability of traditional escalator comb plate and step card foreign matter after fault stop, improve the safety of escalator operation.

Description

Technical Field

[0001] This utility model relates to the field of escalator technology, specifically an escalator with an early warning device for abnormal engagement between the comb plate and the steps. Background Technology

[0002] An escalator is a fixed, electrically driven device consisting of a specially structured chain conveyor and two specially structured belt conveyors. It has a circulating movement path and is used to transport passengers upwards or downwards at different floor levels in a building. As a core transportation device in public places, the safe operation of escalators is directly related to the safety of public life and property.

[0003] During the use of escalators, the area where the steps mesh with the comb plate is one of the most dangerous points where escalators are most prone to jamming accidents. Once shoelaces, clothing, or long, thin objects are caught in this gap, they can easily cause serious shearing, crushing, or even falls. Currently, the safety protection of escalators mainly relies on the safety switch of the comb plate, which is designed to trigger a stop when a foreign object gets stuck and causes the comb plate to shift backward or vertically. This stop is a reactive protection measure, meaning it only activates after the risk of injury has actually occurred or even resulted in consequences. It lacks the ability to provide early warning. For flexible or small foreign objects, its warning and protection effects are even more limited. Routine maintenance also mainly relies on manual periodic inspections, which cannot achieve real-time, online status monitoring. Utility Model Content

[0004] The purpose of this utility model is to provide an escalator with an early warning device for abnormal engagement between the comb plate and the steps, in order to solve the problem mentioned in the background art that once shoelaces, clothing, long and thin objects are caught in the gap, they can easily cause serious shearing, squeezing, or even falls. Moreover, the current safety protection of escalators mainly relies on the safety switch of the comb plate. When the stop is made, it is a reactive protection, that is, it only acts after the risk of injury has actually occurred or even caused consequences, lacking the ability to provide early warning. For flexible or small foreign objects, its early warning and protection effect is even more limited. Daily maintenance also mainly relies on manual periodic inspections, which cannot achieve real-time, online status monitoring.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an escalator with a comb plate and step engagement abnormality warning device, including a step plate, which is the main step of the escalator, wherein the concave and convex structure on the surface of the step plate engages with the tooth groove of the comb plate body. The comb plate body, step plate, comb plate fixing plate, comb plate fixing bolts, fixing bracket and integrated sensor constitute the detection device of the escalator, and the comb plate fixing plate is set in the end area of ​​the escalator through the fixing bracket, and the comb plate body is installed on the comb plate fixing plate through the comb plate fixing bolts. The integrated sensor is installed at the connection between the comb tooth fixing plate and the comb tooth plate body, and is used to monitor the state parameters when the comb tooth plate body and the ladder plate are engaged, and to provide early warning of engagement abnormalities.

[0006] By adopting the above technical solution, a detection device is formed by comb tooth fixing plate, fixing bracket, integrated sensor and other components. The connection relationship of each component is clarified, and the real-time monitoring of the meshing state parameters of comb tooth plate and ladder is realized. This provides core structural support for early warning of meshing abnormalities and breaks through the traditional safety protection limitation of only relying on post-event shutdown.

[0007] Preferably, one end of the comb tooth fixing plate connected to the comb tooth plate body is an inclined structure facing the step plate, and a support bracket is installed at the bottom end of the comb tooth fixing plate.

[0008] By adopting the above technical solution, the inclined structure of the comb tooth fixing plate makes the comb tooth plate body and the step mesh more closely, reducing the gap for foreign objects to be rolled in. The bottom support bracket enhances the support strength of the comb tooth fixing plate, prevents it from deforming under stress, and ensures long-term meshing accuracy.

[0009] Preferably, the comb plate body is fastened to the comb plate fixing plate by comb plate fixing bolts installed at equal intervals.

[0010] By adopting the above technical solution, the equidistantly installed comb plate fixing bolts make the connection between the comb plate body and the comb plate fixing plate more secure and the force more even, avoiding the comb plate from shifting due to local loosening, ensuring meshing stability, and reducing monitoring errors or meshing abnormalities caused by connection problems.

[0011] Preferably, the upper end of the fixed bracket is provided with an elastic element, which cooperates with the comb plate body, and the vibration of the elastic element at the upper end of the fixed bracket is collected by an integrated sensor.

[0012] Using the above technical solution, the elastic element at the upper end of the fixed bracket can effectively transmit the slight vibration of the comb plate body caused by abnormal meshing, providing a reliable medium for the integrated sensor to collect vibration signals, helping the sensor to detect minor abnormalities such as foreign object jamming, and improving the early warning sensitivity.

[0013] Preferably, the bottom end of the fixed bracket is fixedly connected to the integrated sensor by a threaded connection, and the upper end of the fixed bracket is installed at the end of the support bracket of the comb tooth fixing plate.

[0014] By adopting the above technical solution, the sensor is integrated into the bottom of the fixed bracket with a threaded connection to ensure that the sensor is installed firmly and to avoid loosening during operation that would affect the detection accuracy. The upper end is installed with the support bracket to enhance the structural synergy, ensuring the relative position stability of the sensor and the comb plate body and improving the reliability of monitoring.

[0015] Preferably, the integrated sensor is composed of a sound sensor, an acceleration sensor, and a displacement sensor, and the sound sensor of the integrated sensor is used to collect the sound signal generated by the vibration of the elastic element of the fixed bracket under the action of force.

[0016] By adopting the above technical solution, sound, acceleration and displacement sensors are integrated to collect meshing abnormal signals in multiple dimensions. The sound sensor can identify the friction sound of flexible parts and small foreign objects, while the acceleration and displacement sensors can supplement the monitoring of vibration and displacement.

[0017] Preferably, the detection areas of the accelerometer and displacement sensor in the integrated sensor are oriented towards the force-bearing area of ​​the comb plate body.

[0018] With the above technical solution, the acceleration and displacement sensors are positioned so that they face the stress area of ​​the comb plate. This allows for direct and accurate acquisition of key parameters during meshing abnormalities, reducing signal attenuation or interference, ensuring accurate anomaly detection, avoiding misjudgments or missed judgments, and improving the effectiveness of early warning.

[0019] Compared with the prior art, the beneficial effects of this utility model are: the escalator with a comb-tooth plate and step engagement abnormality warning device: 1. The detection device of this escalator forms a stable comb plate body installation structure through the inclined structure of the comb plate fixing plate, the support bracket, and the equidistant comb plate fixing bolts. It can accurately control the meshing gap between the comb plate body and the steps, reducing the risk of foreign objects such as shoelaces and clothing getting caught in the basic gap. At the same time, the elastic element at the upper end of the fixing bracket can transmit the slight vibration of the comb plate body caused by foreign objects getting stuck. The integrated sensor's sound sensor can collect the vibration sound signal in real time, and the displacement sensor can monitor the displacement of the comb plate body caused by foreign objects. From the dual dimensions of physical gap control and abnormal signal capture, the risk of foreign objects getting caught can be detected in advance, avoiding shearing, squeezing and personnel falling accidents. 2. This device employs a multi-dimensional monitoring structure integrating sensors. The sound sensor captures the characteristic sound spectrum generated by the friction between flexible or small foreign objects and the comb teeth and stepped surfaces. The acceleration sensor can detect slight vibration acceleration changes caused by such foreign objects, allowing for early identification of anomalies without waiting for significant displacement of the comb teeth. Simultaneously, the threaded connection structure between the fixed bracket and the integrated sensor ensures that the sensor detection area is stably oriented towards the stress area of ​​the comb teeth, ensuring accurate signal acquisition and effectively improving the early warning effect for flexible or small foreign objects. This upgrades safety protection from post-event remediation to pre-event warning. 3. This device integrates sensors with a fixed bracket and comb tooth fixing plate for coordinated installation. The integrated sensors continuously monitor the sound, acceleration, and displacement parameters of the meshing between the comb tooth plate body and the steps, and transmit the signals to the controller in real time to achieve 24-hour online monitoring. This structure can capture meshing abnormalities in real time, and the abnormal signals can be sent to management personnel and the monitoring platform simultaneously, reducing reliance on manual labor, improving maintenance response speed and monitoring reliability, and avoiding the omission of potential safety hazards due to untimely inspections. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the device platform structure of this utility model; Figure 2 This is a schematic diagram of the mounting structure of the fixed bracket and sensor of this utility model; Figure 3 This utility model Figure 1 Schematic diagram of the cross-sectional structure along line A-A'; Figure 4 This utility model Figure 3 Enlarged structural diagram at point B; Figure 5 This is a schematic diagram of the installation location structure of the integrated sensor of this utility model.

[0021] In the diagram: 1. Comb plate fixing plate; 2. Comb plate fixing bolts; 3. Comb plate body; 4. Step plate; 5. Fixing bracket; 6. Integrated sensor. Detailed Implementation

[0022] 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.

[0023] Please see Figures 1-5 This utility model provides a technical solution: an escalator with an early warning device for abnormal engagement between the comb plate and the step plate 4, including a comb plate fixing plate 1, comb plate fixing bolts 2, comb plate body 3, step plate 4, fixing bracket 5 and integrated sensor 6. Among them, the step plate 4 is the main step of the escalator, and the concave and convex structure on the surface of the step plate 4 meshes with the tooth groove of the comb structure of the comb plate body 3. The comb plate body 3, the step plate 4, the comb plate fixing plate 1, the comb plate fixing bolts 2, the fixing bracket 5, and the integrated sensor 6 constitute the detection device of the escalator. The comb plate fixing plate 1 is set in the end area of ​​the escalator through the fixing bracket 5. The comb plate body 3 is installed on the comb plate fixing plate 1 through the comb plate fixing bolts 2. One end of the comb plate fixing plate 1 connected to the comb plate body 3 is an inclined structure facing the step plate 4. The bottom end of the comb plate fixing plate 1 is equipped with a support bracket. The comb plate body 3 is fastened to the comb plate fixing plate 1 through the comb plate fixing bolts 2 installed at equal intervals. The upper end of the fixing bracket 5 is provided with an elastic element, and the elastic element cooperates with the comb plate body 3. The vibration of the elastic element at the upper end of the fixing bracket 5 is collected by the integrated sensor 6. The bottom end of the fixing bracket 5 is fixedly connected to the integrated sensor 6 through a threaded connection. The upper end of the fixing bracket 5 is installed at the end of the support bracket of the comb plate fixing plate 1. Referring to the attached diagrams in the instruction manual Figures 1-5 As shown, the fixed bracket 5 is attached to the preset position of the end frame of the escalator, and the fixed bracket 5 is fastened to the steel structure of the frame by the expansion bolts through the mounting holes of the fixed bracket 5 to ensure that the fixed bracket 5 is not loose. The back of the comb plate 1 is attached to the front end of the fixed bracket 5, and the two are fastened by the bolts through the corresponding mounting holes of the two, so that one end of the comb plate body 3 connected to the inclined surface of the comb plate 1 faces the running path of the step plate 4. A support bracket with a bottom dimension suitable for the comb tooth fixing plate 1 is installed on the bottom end of the comb tooth fixing plate 1 by welding. Each end of the support bracket is then fixed to a fixing bracket 5. Figures 1-2 As shown, the back of the comb plate body 3 is attached to the inclined surface of the comb plate fixing plate 1. The comb plate fixing bolts 2, which are evenly distributed, are inserted through the bolt holes of the comb plate body 3 and the comb plate fixing plate 1 and tightened gradually. After installation, the meshing gap between the comb teeth of the comb plate body 3 and the tooth groove of the step plate 4 is checked to ensure that there is no misalignment and no jamming during operation. Align the mounting end of the integrated sensor 6 with the preset interface at the bottom of the fixed bracket 5, and tighten the two by threaded connection to ensure that the integrated sensor 6 is not loose. At the same time, adjust the detection end of the sensor so that it faces the middle stress area of ​​the comb plate body 3, that is, the weak part where the comb teeth are connected to the plate body. Pass the signal output line of the integrated sensor 6 through the built-in wire hole of the fixed bracket 5 and connect it to the controller of the escalator. After the line is connected, wrap the interface with insulating tape to prevent dust and moisture from entering and affecting signal transmission. An integrated sensor 6 is installed at the connection between the comb tooth fixing plate 1 and the comb tooth plate body 3. It is used to monitor the state parameters when the comb tooth plate body 3 and the ladder plate 4 are meshed, and to provide early warning of meshing abnormalities. The integrated sensor 6 is composed of a sound sensor, an acceleration sensor, and a displacement sensor. The sound sensor of the integrated sensor 6 is used to collect the sound signal generated by the vibration of the elastic element of the fixed bracket 5 under the action of force. The detection parts of the acceleration sensor and the displacement sensor in the integrated sensor 6 face the force-bearing area of ​​the comb tooth plate body 3. Referring to the attached diagrams in the instruction manual Figures 1-5 As shown, after the escalator enters passenger mode, the integrated sensor 6 continuously monitors signals in three dimensions: Sound signal: When foreign objects such as shoelaces or clothing fibers are stuck between the step plate 4 and the comb plate body 3, or when the two are misaligned due to installation deviation, friction and collision sounds different from normal operation will be generated. The elastic element at the upper end of the fixed bracket 5 will resonate due to this vibration. The sound sensor of the integrated sensor 6 collects the sound signal of the elastic element vibration and transmits it to the controller. It is compared with the preset "abnormal spectrum library", such as the high-frequency friction spectrum of foreign object jamming and the low-frequency collision spectrum of misalignment. If the matching degree value is high, it is determined to be "sound abnormality" and triggers an alarm. Acceleration signal: When there is an abnormal meshing, such as foreign object jamming or comb tooth deformation, it will generate an impact force on the comb tooth plate body 3, causing the comb tooth plate and fixed bracket 5 to have acceleration fluctuations in three directions: front and back in the running direction of the ladder plate 4, left and right in the width direction of the ladder plate 4, and vertically up and down. The acceleration sensor of the integrated sensor 6 collects the acceleration values ​​in these three directions in real time and compares them with the "normal acceleration baseline" stored in the controller. If the acceleration difference in any direction exceeds the preset threshold, it is judged as "acceleration abnormality" and triggers an early warning. Displacement signal: When a foreign object gets stuck or the meshing is severely misaligned, the comb plate body 3 will be displaced under the action of force. When the foreign object is large, it will push the comb plate backward and move away from the ladder plate 4. Deformation of the comb teeth will cause displacement in the left and right directions. Loose parts will cause displacement in the vertical direction. The displacement sensor of the integrated sensor 6 uses laser detection technology to measure the displacement of the comb plate body 3 relative to the initial position in real time. If the displacement in any direction exceeds the preset threshold, it is judged as "displacement abnormality" and triggers an alarm. When the integrated sensor 6 detects an abnormal signal, the controller will simultaneously trigger a local alert, namely, the audible and visual alarm at the escalator entrance and exit, and a remote alert, namely, the controller will send the warning information to the management personnel and monitoring platform via the network. This device can monitor the meshing status of the comb plate and the steps in real time, and promptly warn and handle any abnormal conditions, reducing the probability of escalator malfunction and stoppage due to foreign objects getting stuck in the comb plate and steps of traditional escalators, and improving the safety of escalator operation.

[0024] Working principle: When using this escalator with an abnormal engagement warning device between the comb plate and the step plate 4, the concave and convex structures on the surface of the comb plate body 3 and the step plate 4 precisely engage through the tooth grooves, achieving a smooth transition for passengers going up and down the escalator. When abnormal conditions such as foreign object jamming or misalignment occur in the engagement area, the integrated sensor 6 triggers an early warning based on multi-dimensional monitoring: If a foreign object is stuck between the ladder plate 4 and the comb plate body 3, or if abnormal vibration occurs due to misalignment during the meshing process, the elastic element at the upper end of the fixed bracket 5 will vibrate under the force. At this time, the sound sensor integrated in the integrated sensor 6 will collect the sound signal generated by the vibration of the elastic element. When the sound spectrum matches the preset characteristic spectrum of foreign object jamming or abnormal meshing, it is determined to be an abnormal state. The impact force caused by abnormal meshing will cause the comb plate body 3, fixed bracket 5 and other components to have spatial acceleration changes in three directions, namely front and back, left and right, and vertical. The acceleration sensor in the integrated sensor 6 monitors the acceleration values ​​in these three directions in real time. If the acceleration value in any direction exceeds the preset threshold when the escalator is running normally, it is judged as an abnormal state. When a foreign object becomes lodged between the step plate 4 and the comb plate body 3, or when the meshing relationship between the two is misaligned, the comb plate body 3 may displace in three directions: front-back, left-right, and vertical. The displacement sensor in the integrated sensor 6 detects the displacement in these three directions. If the displacement in any direction exceeds 2mm, it is considered an abnormal state. The sound, acceleration, and displacement signals collected by the integrated sensor 6 are transmitted to the escalator controller. After analyzing and processing the signals, if the controller determines that there is a meshing abnormality, it will immediately send an early warning to the escalator management personnel and the monitoring platform, prompting them to go to the site to check the meshing area between the step plate 4 and the comb plate body 3, and promptly remove the foreign object or fault to avoid safety accidents such as shearing and squeezing. This device can monitor the meshing state of the comb plate and the step in real time, and promptly warn and handle abnormal states, reducing the probability of escalator malfunction and stoppage after foreign objects get stuck in the comb plate and step of traditional escalators, improving the safety of escalator operation, and increasing overall practicality.

[0025] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An escalator with an early warning device for abnormal engagement between the comb plate and the steps, comprising: The step plate (4) is the main step of the escalator. The concave and convex structure on the surface of the step plate (4) meshes with the tooth groove of the comb structure of the comb plate body (3). The features are as follows: the comb plate body (3), the step plate (4), the comb fixing plate (1), the comb fixing bolt (2), the fixing bracket (5) and the integrated sensor (6) constitute the detection device of the escalator, and the comb fixing plate (1) is set in the end area of ​​the escalator through the fixing bracket (5), and the comb plate body (3) is installed on the comb fixing plate (1) through the comb fixing bolt (2); The integrated sensor (6) is installed at the connection between the comb tooth fixing plate (1) and the comb tooth plate body (3) to monitor the state parameters when the comb tooth plate body (3) meshes with the ladder plate (4) and to provide early warning of meshing abnormalities.

2. An escalator with a device for early warning of abnormal state of engagement between comb plate and step according to claim 1, characterized in that: The comb fixing plate (1) has an inclined structure at one end connected to the comb plate body (3) facing the step plate (4), and a support bracket is installed at the bottom of the comb fixing plate (1).

3. An escalator with a device for early warning of abnormal state of engagement between comb plate and step according to claim 1, characterized in that: The comb plate body (3) is fastened to the comb plate fixing plate (1) by comb plate fixing bolts (2) installed at equal intervals.

4. An escalator with a device for early warning of abnormal state of comb plate and step engagement according to claim 1, characterized in that: The upper end of the fixed bracket (5) is provided with an elastic element, which cooperates with the comb plate body (3), and the vibration of the elastic element at the upper end of the fixed bracket (5) is collected by the integrated sensor (6).

5. An escalator with a device for early warning of abnormal state of engagement between comb plate and step according to claim 1, characterized in that: The bottom end of the fixed bracket (5) is fixedly connected to the integrated sensor (6) by a threaded connection, and the upper end of the fixed bracket (5) is installed at the end of the support bracket of the comb tooth fixing plate (1).

6. An escalator with a device for early warning of abnormal states of engagement between comb plate and step according to claim 1, characterized in that: The integrated sensor (6) is composed of a sound sensor, an acceleration sensor and a displacement sensor. The sound sensor of the integrated sensor (6) is used to collect the sound signal generated by the vibration of the elastic element of the fixed bracket (5) under the action of the force.

7. An escalator with a device for early warning of abnormal states of engagement between a comb plate and steps according to claim 1, characterized in that: The detection parts of the acceleration sensor and displacement sensor in the integrated sensor (6) are oriented toward the force-bearing area of ​​the comb plate body (3).

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