Automatic personnel conveying system
By using a combination of sensors and sprocket synchronization parts in the automatic personnel conveying system, the problems of inaccurate measurement of ladder speed and complex maintenance are solved, and efficient and accurate ladder speed monitoring and safety guarantee are achieved.
Patent Information
- Application Number
- CN202421842101.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-31
- Publication Date
- 2025-07-04
- Estimated Expiration
- 2034-07-31
AI Technical Summary
In the existing safety monitoring scheme of automatic personnel conveying systems, the measurement of ladder running speed is inaccurate, easily affected by environmental factors, and complex and time-consuming maintenance.
The driving sprocket and speed measurement equipment are adopted. The speed measurement equipment includes a sensor and a sprocket synchronous member. The sprocket synchronous member is installed on the driving sprocket and rotates simultaneously. The sensor senses the missing part of the sprocket synchronous member to generate a signal, and the ladder speed is obtained through contactless measurement technology.
It realizes accurate monitoring of ladder speed, avoids the impact of wear and oil pollution, simplifies the maintenance process, and ensures the safe operation of the equipment.
Smart Images
Figure CN223060470U_ABST
Abstract
Description
Technical Field
[0001] The present disclosure relates to an automatic people mover system. Background Art
[0002] With the rapid development of society, escalators and moving walkways have become an important part of modern urban public infrastructure and are widely used in crowded places such as railway stations, subway stations, shopping malls, etc. The safe operation of these devices is directly related to the safety of public life and property. Therefore, it is very important to monitor their safety.
[0003] The existing safety monitoring solutions have deficiencies. For example, in the existing solutions, the running speed of the ladder road is generally obtained by measuring the rotational speed of the main shaft. However, this method cannot reflect the actual running speed of the ladder road in many cases, greatly reducing its monitoring effect. Another example is that in the existing solutions, the accuracy of the running speed of the ladder road is easily affected by on-site environmental factors such as gear wear and main shaft grease contamination, resulting in an inability to accurately obtain the speed measurement result of the ladder road running. Another example is that the existing traditional speed measurement devices need to disassemble multiple components during maintenance, resulting in a complex and time-consuming maintenance process. Summary of the Utility Model
[0004] In view of the problems and needs mentioned above, the present disclosure proposes a solution which solves the above problems and brings other technical effects due to the following technical features.
[0005] On the one hand, the present disclosure proposes an automatic people mover system, which includes a drive sprocket configured to drive the movement of the ladder road of the automatic people mover system; and a speed measurement device, the speed measurement device including a sensor and a sprocket synchronizer, the sprocket synchronizer being mounted on the drive sprocket to rotate synchronously with the drive sprocket, the sensor being configured to generate a sensor signal when sensing the sprocket synchronizer or a part of the sprocket synchronizer.
[0006] According to a preferred solution, the sprocket synchronizer is a sheet-like member mounted on the outer side surface of the drive sprocket.
[0007] According to a preferred solution, the sprocket synchronizer has one or more missing parts, and the sensor is configured to generate the sensor signal based on sensing the one or more missing parts.
[0008] According to a preferred solution, the one or more missing parts are a plurality of through holes evenly spaced apart circumferentially around the rotation axis of the drive sprocket.
[0009] According to a preferred solution, the sprocket synchronizer has a circular or annular shape, and the plurality of through holes are arranged at the outer peripheral edge of the sprocket synchronizer.
[0010] According to a preferred embodiment, the one or more missing portions are a plurality of grooves that are evenly spaced apart circumferentially around the rotation axis of the drive sprocket.
[0011] According to a preferred embodiment, the sprocket synchronizer has a circular or annular shape, the plurality of grooves are arranged at the outer peripheral edge of the sprocket synchronizer, and open outward in the radial direction of the sprocket synchronizer.
[0012] According to a preferred embodiment, the sprocket synchronizer includes two or more separate segments, and the two or more segments form a complete ring after being installed on the drive sprocket.
[0013] According to a preferred embodiment, the sprocket synchronizer includes a separate first half-ring and a second half-ring.
[0014] According to a preferred embodiment, the sensor is installed in the automatic people mover in a manner movable relative to the drive sprocket.
[0015] According to a preferred embodiment, the sensor is installed on a sliding rod in a slidable manner, and the sliding rod is fixed to the truss of the automatic people mover.
[0016] According to a preferred embodiment, the automatic people mover further includes a processing and control unit configured to determine whether the speed of the ladder of the automatic people mover is normal based on a sensor signal from the sensor.
[0017] According to a preferred embodiment, the automatic people mover is an escalator or a moving walkway.
[0018] This solution provides a strong guarantee for the safe operation of escalators and moving walkways with its unique design, convenient installation and efficient monitoring function.
[0019] In the following, the optimal embodiments for implementing the present disclosure will be described in more detail with reference to the accompanying drawings so as to easily understand the features and advantages of the present disclosure. Description of the Drawings
[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the accompanying drawings of the embodiments of the present disclosure will be briefly introduced below. Among them, the accompanying drawings are only used to show some embodiments of the present disclosure, rather than limiting all embodiments of the present disclosure thereto.
[0021] Figure 1 Shows a partial view of an exemplary embodiment of the automatic people mover proposed by the present disclosure;
[0022] Figure 2 Shows a partial view of another exemplary embodiment of the automatic people mover proposed by the present disclosure;
[0023] Figure 3 shows Figure 1 a view of a sprocket synchronizer of an automatic people mover system of
[0024] Figure 4 shows Figure 2 a view of a sprocket synchronizer of an automatic people mover system of
[0025] List of Reference Numerals
[0026] 1 Driving Sprocket
[0027] 11 Outer Side
[0028] 2 Sensor
[0029] 3 Sprocket Synchronizer
[0030] 31 Missing Portion
[0031] 32 Through-Hole
[0032] 33 Groove
[0033] 4 Processing and Control Unit
[0034] 5 Slide Bar Detailed Description of the Invention
[0035] In order to make the objectives, technical solutions, and advantages of the technical solutions of the present disclosure clearer, the technical solutions of the embodiments of the present disclosure will be clearly and completely described below with reference to the accompanying drawings of specific embodiments of the present disclosure. The same reference numerals in the drawings represent the same components. It should be noted that the described embodiments are only a part of the embodiments of the present disclosure, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the described embodiments of the present disclosure without creative efforts fall within the scope of protection of the present disclosure.
[0036] Compared with the embodiments shown in the accompanying drawings, the feasible implementation solutions within the scope of protection of the present disclosure may have fewer components, have other components not shown in the accompanying drawings, different components, differently arranged components, or differently connected components, etc. In addition, two or more components in the accompanying drawings may be implemented in a single component, or a single component shown in the accompanying drawings may be implemented as multiple separate components.
[0037] Unless otherwise defined, technical or scientific terms used herein shall have the ordinary meaning as understood by those of ordinary skill in the art to which this disclosure pertains. The terms "first", "second" and similar terms used in the specification and claims of this patent application of the disclosure do not denote any order, quantity or importance, but are merely used to distinguish different components. Similarly, terms such as "a" or "an" do not necessarily denote a quantity limitation. Terms such as "comprising" or "including" mean that the elements or items appearing before this term cover the elements or items listed after this term and their equivalents, without excluding other elements or items. Terms such as "connected" or "coupled" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. Terms such as "upper", "lower", "left", "right" are only used to indicate relative position relationships, and when the absolute position of the object being described changes, the relative position relationship may also change accordingly.
[0038] This disclosure relates to an automatic people mover system, which may specifically be an escalator and a moving walkway. Among them, an escalator generally operates in an inclined direction and may have steps, enabling passengers to stand on the steps and reach another floor of a building. A moving walkway generally operates in a horizontal direction or a slightly inclined direction, and passengers can stand on it and move forward as the moving walkway moves. Examples of moving walkways may include the inclined moving walkways commonly found in supermarkets that are suitable for pushing shopping carts, and the horizontal moving walkways commonly found in airports, etc. At the same time, the automatic people mover system of this disclosure may also include other people mover facilities similar to the escalator and the moving walkway.
[0039] The automatic people mover system may include a power source, such as an electric motor, to provide power to the main shaft to drive its rotation. Among them, a gearbox may be provided between the electric motor and the main shaft to reduce the rotational speed and increase the torque, so as to drive the main shaft to rotate at an appropriate speed. The main shaft is connected to a drive sprocket to transmit power to the drive sprocket. The drive sprocket may transmit power to the ladder track of the automatic people mover system, causing the ladder track to move along a predetermined path. Among them, the automatic people mover system may have a single-layer or double-layer sprocket, and the solution of this disclosure is applicable to both single-layer and double-layer sprocket automatic people mover systems. Among them, in this disclosure, the "ladder track" may refer to the steps in an escalator or the treads in a moving walkway.
[0040] The escalator or the moving walkway also has a truss, which is usually made of metal or alloy materials and is used to bear the weight of the entire device and its passengers and the dynamic load during operation. The truss structure is usually composed of a series of interconnected rod structures, and these rod structures can form triangular or rectangular units to provide high stability and strength.
[0041] The following will combine with Figures 1-4 Specifically introduce the features of the automatic people mover system of the present disclosure. Among them Figure 1 , 2 Respectively show partial views of different embodiments of the automatic people mover system of the present disclosure. The difference between the two lies in the different structures of the sprocket synchronizer 3 installed. Among them, Figure 3 , Figure 4 Respectively show Figure 1 and Figure 2 The sprocket synchronizer 3 in the automatic people mover system of. First, the common features applicable to each embodiment will be introduced below.
[0042] As shown in the figure, the automatic people mover system includes a driving sprocket and a speed measuring device. Among them, the driving sprocket 1 can be directly installed on the main shaft driven by the motor to drive the movement of the ladder path of the automatic people mover system. In the embodiment of the attached drawing, a driving sprocket is installed at each end of the main shaft. The purpose of setting the speed measuring device is to measure the running speed of the ladder path so that the running state of the automatic people mover system can be further monitored through a processing and control module, etc.
[0043] The speed measuring device includes a sensor 2 and a sprocket synchronizer 3. The sprocket synchronizer 3 is installed on the driving sprocket 1 to rotate synchronously with the driving sprocket 1. The sensor 2 is configured to sense the sprocket synchronizer 3 or at least a part of the sprocket synchronizer 3 to generate a sensor signal. This sensor signal can be used to obtain the rotational speed of the driving sprocket 1 or information directly related to the rotational speed, such as frequency information.
[0044] In the solution of the present disclosure, a component to be sensed by the sensor 2, that is, the sprocket synchronizer 3, is directly installed on the driving sprocket 1. There is no speed difference between the sprocket synchronizer 3 and the ladder path speed, but they rotate synchronously at the same speed. Through such a solution, the sensor 2 of the speed measuring device of the present disclosure actually directly measures the speed of the driving sprocket 1. In this way, even if the driving main shaft is separated from the driving sprocket 1, the speed change of the ladder path can be captured in time. In contrast, in the existing solution for measuring the speed of the driving main shaft, when the driving main shaft is separated from the driving sprocket 1, although the main shaft is still driven, the ladder path has stopped or is about to stop due to the loss of the driving connection. In this case, if the operation of the ladder path is still judged by the rotational speed of the main shaft, there will be great potential safety hazards, such as serious consequences such as the collapse of the ladder path.
[0045] Among them, the sensor 2 can sense the sprocket synchronizer 3 through any non-contact measurement technology to obtain the speed of the sprocket through the speed of the sprocket synchronizer 3. The non-contact measurement technology includes but is not limited to technologies such as laser measurement and infrared measurement. Through the non-contact measurement technology, problems such as mechanical wear can be overcome.
[0046] Preferably, the sprocket synchronizer 3 is a sheet-like member mounted on the side surface of the drive sprocket 1. Here, the sheet-like member refers to a flat or approximately flat part having a certain thickness and shape, and its thickness is relatively small compared to its planar dimensions. The sheet-like member can have a rectangular, circular, elliptical or any other shape. Manufacturing the sprocket synchronizer 3 into a sheet-like member not only makes the speed measurement device simple in structure and easy to process, but also can be easily and firmly mounted on the side surface of the drive sprocket 1.
[0047] Since the sprocket synchronizer 3 is directly mounted on the side surface of the drive sprocket 1 and the speed of the drive sprocket 1 is deduced by measuring the sprocket synchronizer 3 through a reason sensor, rather than directly measuring the speed of the drive sprocket 1 by a sensor, the problem of inaccurate measurement caused by wear, oil stain, etc. of the drive sprocket 1 can be avoided.
[0048] Preferably, as Figure 1 、 2 shown, the sprocket synchronizer 3 is mounted on the outer side surface 11 of the drive sprocket 1. By mounting the sprocket synchronizer 3 on the outer side surface 11 of the drive sprocket 1 instead of the inner side surface, the sprocket synchronizer 3 can be mounted and adjusted outside the ladderway. Thus, when maintaining the speed measurement device, it is not necessary to disassemble the step of the ladder, etc., reducing the maintenance cost.
[0049] Among them, in an embodiment not shown, the sprocket synchronizer 3 can be eccentrically mounted relative to the drive sprocket 1, and the sensor 2 is configured to generate a sensor signal based on sensing the sprocket synchronizer 3. In this way, whenever the drive sprocket 1 rotates one circle, a sensor signal will be generated. Thus, the rotational speed or frequency of the drive sprocket 1 can be known.
[0050] In the preferred embodiment shown in the drawings, the sprocket synchronizer 3 has one or more missing parts 31, and the sensor 2 is configured to generate a sensor signal based on sensing the one or more missing parts 31, and the sensor signal can be used to know the rotational speed of the drive sprocket 1. Among them, the missing part 31 can be a part of the sprocket synchronizer 3 where the material is missing, such as a concave hole, through hole, pit, groove, through groove, etc., and its shape is not limited as long as the sensor 2 can identify such a missing part. Among them, the sensor signal in the present disclosure can be various known signal forms. Preferably, the sensor 2 emits a discrete signal whenever it senses a missing part. Through the number of discrete signals within a unit time, the rotational speed / frequency of the sprocket synchronizer 3 and the drive sprocket 1 that rotates synchronously with the sprocket synchronizer 3 can be known. Furthermore, the sensor signal actually also reflects the speed of the ladderway driven by the drive sprocket 1.
[0051] In as Figure 3In the preferred embodiment shown, the one or more missing portions 31 on the sprocket synchronizer 3 are a plurality of through holes 32 that are evenly spaced apart circumferentially around the rotation axis of the drive sprocket 1. Alternatively, in the preferred embodiment as shown in Figure 4 the one or more missing portions 31 are a plurality of grooves 33 that are evenly spaced apart circumferentially around the rotation axis of the drive sprocket 1. The designs of the through holes 32 and the grooves 33 can both ensure the structural simplicity of the speed measuring device and ensure that it can be effectively recognized by the sensor 2 itself, thereby achieving the accuracy of measurement.
[0052] Preferably, the number of the through holes 32 or the grooves 33 is a number that can be divided evenly by 360, such as 30, 36, 40, 45, 60, 72, 90, 120, 180, etc., to improve the calculation efficiency and accuracy. Among them, in the embodiment of the drawings, 72 through holes 32 or grooves 33 are provided. In other alternative embodiments, other numbers can also be selected. By setting a larger number of missing portions 31, the measurement accuracy can be improved.
[0053] Preferably, the sprocket synchronizer 3 has a circular or annular shape. When it is installed on the drive sprocket 1, the center of the sprocket synchronizer 3 coincides with the center / rotation axis of the drive sprocket 1. More preferably, the plurality of through holes 32 or grooves 33 are all arranged at the outer peripheral edge of the sprocket synchronizer 3. The phrase "arranged at the outer peripheral edge of the sprocket synchronizer" means close to the outer peripheral edge of the sprocket synchronizer 3, as in Figure 3 the situation shown.
[0054] In the case where the missing portion 31 of the sprocket synchronizer 3 is a groove 33, preferably, as shown in Figure 4 a plurality of grooves 33 are arranged at the outer peripheral edge of the sprocket synchronizer 3 and open outward in the radial direction of the sprocket synchronizer 3.
[0055] By arranging the through holes 32 or the grooves 33 at the outer peripheral edge of the sprocket synchronizer 3, on the basis of the limited area of the sprocket synchronizer 3, as many through holes 32 or grooves 33 as possible can be set, achieving the maximization of space utilization.
[0056] Preferably, the sprocket synchronizer 3 is not integrally manufactured, but includes two or more separate segments, and the two or more segments form a complete ring after being installed on the drive sprocket 1. The advantage of this is that the sprocket synchronizer 3 is easy to install. If the sprocket synchronizer 3 is formed integrally, due to the connection relationship between the drive sprocket 1 and the main shaft, it will be difficult to directly install the sprocket synchronizer 3. More preferably, the sprocket synchronizer 3 includes a separate first half-ring and a second half-ring, and each half-ring extends an angle of 180 degrees. Thus, the sprocket synchronizer 3 can be composed of two identical structural parts, with fewer part types and being easier to manufacture.
[0057] In the present disclosure, the sensor 2 can be installed at any appropriate position as long as it can accurately identify the rotation of the sprocket synchronizer 3. Preferably, the sensor 2 is installed in the automatic people mover system in a manner movable relative to the drive sprocket 1. In this way, after the sensor 2 is installed, the position of the sensor 2 can be conveniently adjusted, avoiding the complex procedures of disassembly and reinstallation.
[0058] More preferably, the sensor 2 is installed on a sliding rod in a slidable manner, and the sliding rod is fixed to the truss of the automatic people mover system.
[0059] In the present disclosure, the automatic people mover system may further include a processing and control unit 4 configured to determine whether the speed of the ladder path of the automatic people mover system is normal based on the sensor signal from the sensor 2. Among them, the processing and control unit 4 can compare the obtained speed or frequency of the automatic people mover system with the corresponding threshold range, and determine whether the speed of the ladder path of the automatic people mover system is normal based on the comparison result. Among them, the threshold range can be pre-stored in the processing and control unit 4.
[0060] The speed measuring device of the automatic people mover system and the exemplary operations of the processing and control unit 4 are introduced below.
[0061] First, the sprocket synchronizer 3 is fixed to the drive sprocket 1 so that when the drive sprocket 1 rotates, the sprocket synchronizer 3 also rotates synchronously. And the sensor 2 is installed at a suitable position, such as the truss, so that the sensor 2 can measure and generate a sensor signal based on sensing the presence of the sprocket synchronizer 3 itself or the presence of the missing portion 31 of the sprocket synchronizer 3. In the case where the sensor measures the presence of the sprocket synchronizer 3 itself, the sprocket synchronizer 3 is eccentrically installed relative to the drive sprocket 1, so that whenever the sensor 2 measures the sprocket synchronizer 3, it means that the drive sprocket has rotated one circle, and at this time the sensor 2 can generate a sensor signal. In the case where the sensor 2 measures the missing portion 31 of the sprocket synchronizer 3, whenever a missing portion 31 is measured by the sensor 2, the sensor 2 can generate a sensor signal. The sensor signal directly reflects the rotational speed of the drive sprocket 1.
[0062] Thereafter, the sensor signal is transmitted to the processing and control unit 4. In an alternative embodiment, the processing and control unit 4 calculates the rotational speed of the drive sprocket 1 based on the received sensor signal, and further obtains the actual operating speed of the step chain. When the actual operating speed of the step chain falls within a predetermined threshold range, the processing and control unit 4 determines that the escalator or moving walk is in a normal operating state. If the actual operating speed of the step chain exceeds this range, the processing and control unit 4 will trigger the step chain stop mechanism to ensure the safety of passengers. In another alternative embodiment, it is not necessary to convert the sensor signal into the actual operating speed of the drive sprocket 1 or the step chain. Instead, the frequency information obtained from the sensor signal is directly compared with a preset threshold range of frequencies. Since the frequency information obtained from the sensor signal directly represents the actual operating speed of the step chain, directly comparing the frequency information of the sensor signal can also determine whether the actual operating speed of the step chain is within the normal range.
[0063] Preferably, considering that the speed of the escalator or moving walk may fluctuate due to the on-site passenger flow and current, the selection of the threshold range is set to be offset by ±15%, ±20% or ±25% relative to the theoretical value. For example, if the speed of the escalator is 0.5 m / s, correspondingly, the theoretical frequency obtained from the sensor signal should be 15 Hz. If the fluctuation range is set to 15%, the pre-stored threshold range can be set to 12.75 Hz to 17.25 Hz (i.e., ±15% of 15 Hz). If the measured frequency is 15.24 Hz, it can be known that the speed of the escalator is within the allowable range and the escalator is operating normally. However, if the real-time operating frequency exceeds this range, for example, is lower than 12.75 Hz or higher than 17.25 Hz, the processing and control unit 4 will trigger the step chain to stop.
[0064] The solution of the present disclosure can achieve real-time monitoring of the step speed of the escalator or moving walk, effectively prevent potential dangers, and ensure the safety of passengers and equipment.
[0065] The exemplary embodiments of the solution proposed by the present disclosure have been described in detail above with reference to the preferred embodiments. However, those skilled in the art can understand that without departing from the concept of the present disclosure, various modifications and variations can be made to the above specific embodiments, and various combinations can be made to the various technical features and structures proposed by the present disclosure, without exceeding the protection scope of the present disclosure. The protection scope of the present disclosure is determined by the appended claims.
Claims
1. An automatic people conveyor system, characterized in that, Comprising: A drive sprocket (1), the drive sprocket (1) being configured to drive the movement of the ladder path of the automatic people mover system; A speed measuring device, the speed measuring device comprising a sensor (2) and a sprocket synchronizer (3), the sprocket synchronizer (3) being mounted on the drive sprocket (1) to rotate synchronously with the drive sprocket (1), the sensor (2) being configured to generate a sensor signal upon sensing the sprocket synchronizer (3) or a part of the sprocket synchronizer (3).
2. The automatic people mover system according to claim 1, wherein The sprocket synchronizer (3) is a sheet-like member mounted to the outer side surface (11) of the drive sprocket (1).
3. The automatic people mover system according to claim 1 or 2, wherein The sprocket synchronizer (3) has one or more missing portions (31), the sensor (2) being configured to generate the sensor signal based on sensing the one or more missing portions (31).
4. The automatic people mover system according to claim 3, wherein The one or more missing portions (31) are a plurality of through holes (32) evenly spaced apart circumferentially around the rotation axis of the drive sprocket (1).
5. The automatic people mover system according to claim 4, wherein The sprocket synchronizer (3) has a circular or annular shape, and the plurality of through holes (32) are arranged at the outer peripheral edge of the sprocket synchronizer (3).
6. The automatic people mover system according to claim 3, wherein The one or more missing portions (31) are a plurality of grooves (33) evenly spaced apart circumferentially around the rotation axis of the drive sprocket (1).
7. The automatic people mover system according to claim 6, wherein The sprocket synchronizer (3) has a circular or annular shape, the plurality of grooves (33) are arranged at the outer peripheral edge of the sprocket synchronizer (3), and are open outward in the radial direction of the sprocket synchronizer (3).
8. The automatic people mover system according to claim 1 or 2, wherein The sprocket synchronizer (3) comprises two or more separate segments, and the two or more segments form a complete ring after being mounted to the drive sprocket (1).
9. The automatic people mover system according to claim 8, wherein The sprocket synchronizer (3) comprises a separate first half-ring and a second half-ring.
10. The automatic people mover system according to claim 1 or 2, wherein The sensor (2) is mounted in the automatic people mover system in a manner movable relative to the drive sprocket (1).
11. The automatic people mover system according to claim 10, wherein The sensor (2) is mounted in a slidable manner on a sliding rod, and the sliding rod is fixed to the truss of the automatic people mover system.
12. The automatic people mover system according to claim 1, wherein The automatic people mover system further includes a processing and control unit (4), which is configured to determine whether the speed of the escalator of the automatic people mover system is normal based on sensor signals from the sensors (2).
13. The automatic people mover system according to claim 1, wherein the automatic people mover system is an escalator or a moving walkway.