Escalator handrail speed measurement device

Abstract

The application provides a kind of escalator handrail belt speed measuring device, speed measuring device is installed on handrail belt, speed measuring device includes main unit, clamping component, speed measuring component and control component, control component is used to control the operation of speed measuring device, main unit has drive assembly, drive assembly has transmission rod and support rod, clamping component has two sets of clamping pieces, transmission rod and support rod are connected with two sets of clamping pieces, transmission rod drives two sets of clamping pieces to realize split and combined motion, clamping piece is clamped on handrail belt, speed measuring component is installed at the lower end of clamping piece, speed measuring component has support wheel and speed measuring wheel, support wheel and speed measuring wheel contact with handrail belt mounting frame, speed measuring wheel is used to measure the running speed of handrail belt;The application can realize the direct measurement of handrail belt speed, obtain continuous data of handrail belt operation, obtain the state of each point of handrail belt operation in time, which is beneficial to accurately diagnose the running state of handrail belt, and the device has the characteristics of convenient operation and high efficiency.

Description

Technical Field

[0001] This invention patent relates to the field of elevator testing technology, and in particular to a speed measuring device for escalator handrail belts. Background Technology

[0002] With the development of public transportation and large shopping malls, the number of escalators and moving walkways has increased significantly, leading to a marked rise in escalator safety accidents. Escalators and moving walkways are generally driven by either chainless (direct drive) or chain drive mechanisms. According to the national standard for escalator manufacturing and safety installation (GB16899-2011), escalators or moving walkways listed in the special equipment catalog must undergo mandatory national safety inspections by special equipment inspection and testing institutions. During escalator operation, long-term operation or aging can cause problems such as excessive wear of the handrail, handrail elongation, and dirt accumulation on the inside of the handrail. When this leads to speed deviations between the handrail and the steps / steps, the escalator's operating speed will become abnormal.

[0003] To address the aforementioned safety hazards, regular monitoring of escalator operating parameters is crucial. Currently, various safety performance testing instruments for escalators and elevators have emerged both domestically and internationally. Common testing methods include: directly measuring the speed of the transmission components inside the escalator's chassis; measuring speed through friction between a handheld device and the handrail belt; and detecting the handrail belt speed through visual recognition. However, these methods suffer from drawbacks such as inconvenience in measurement, significant human error, complex measuring equipment, poor operability, difficulty in data acquisition, and inaccurate data. Therefore, there is a need to design an efficient, convenient, and accurate handrail belt speed measuring device. Summary of the Invention

[0004] The purpose of this invention is to provide an escalator handrail belt speed measuring device, which can facilitate accurate measurement of the handrail belt's condition, thereby solving the problems mentioned in the background art.

[0005] This invention provides an escalator handrail speed measuring device. The speed measuring device is installed on the handrail and includes a main unit, a clamping assembly, a speed measuring component, and a control assembly. The control assembly controls the operation of the speed measuring device. The main unit has a drive assembly, which includes a transmission rod and a support rod. The clamping assembly has two sets of clamping members. The transmission rod and support rod are connected to the two sets of clamping members. The transmission rod drives the two sets of clamping members to achieve opening and closing movements. The clamping members are clamped on the handrail. The speed measuring component is installed at the lower end of the clamping members and has a support wheel and a speed measuring wheel. The support wheel and speed measuring wheel contact the handrail mounting frame. The speed measuring wheel is used to measure the running speed of the handrail.

[0006] Furthermore, the main unit has a base, the base has a horizontal plate and a side plate, the drive assembly has a drive seat, the drive seat is connected to the bottom of the base, the drive seat is connected to a motor, the drive shaft of the motor extends into the drive seat and is connected to a drive gear, the middle part of the transmission rod and the support rod is connected to the drive seat, the transmission rod cooperates with the drive gear, and the ends of the transmission rod and the support rod are connected to the side plate.

[0007] Furthermore, a gear section is provided in the middle of the transmission rod, and the two sides of the gear section have a threaded section one and a threaded section two, the threaded sections one and two have opposite directions of rotation, and the support rod is a smooth rod.

[0008] Furthermore, the transmission rod passes through the drive seat, and both ends of the transmission rod are connected to the side plate through bearings. The support rod is connected to the drive seat and is fixedly connected to the side plate.

[0009] Furthermore, the control component has a control button for controlling the movement of the clamping member. The clamping member includes a clamp seat and a clamp. The clamp seat has an arc-shaped portion with a pin hole. The clamp is arc-shaped and has a mounting pin. The clamp is mounted in the pin hole of the arc-shaped portion via the mounting pin. The upper end of the clamp seat has a connecting block with a threaded hole and a through hole. The threaded hole is connected to the transmission rod, and the through hole is connected to the support rod.

[0010] Furthermore, the speed measuring component has a roller frame with a through mounting space. A speed measuring wheel and two support wheels are arranged in the mounting space. The roller frame has three sets of mounting holes along its length. The speed measuring wheel is mounted in the middle set of mounting holes via a radial bearing, and the support wheels are mounted in the other two sets of mounting holes via floating bearings. The control component has a storage unit for storing the measurement data recorded by the speed measuring wheel.

[0011] Furthermore, the floating bearing includes an inner bearing ring and an outer bearing ring, the outer bearing ring being located outside the inner bearing ring, and there is a gap between the inner ring surface of the outer bearing ring and the outer ring surface of the inner bearing ring. The inner bearing ring and the outer bearing ring are connected by a plurality of circumferentially distributed elastic elements.

[0012] Furthermore, the outer ring of the inner bearing ring is provided with a receiving groove, and the inner ring of the outer bearing ring is provided with a receiving groove. The receiving groove is used to install an elastic element, which is a spring or an elastic rubber column.

[0013] Furthermore, the speed measuring device has a tilt sensor, which is electrically connected to the control component. The tilt sensor is disposed inside the main unit and includes a housing, a swinging component, and a sensing component. The swinging component has a shaft hole and extends a certain length along the shaft hole. The cross-section of the swinging component is triangular. The swinging component is mounted inside the housing via a shaft, and the swinging component and the shaft are clearance-fitted. The sensing component is mounted on the inner wall of the housing. The sensing component has a first sensing part, and the swinging component has a second sensing part. After the swinging component swings forward, the second sensing part contacts the first sensing part.

[0014] Furthermore, the control button is used to control the movement of the two sets of clamping components. The speed measuring device has an upward mode and a downward mode. The speed measuring device is equipped with an indicator to show the direction of the device's operation. The tilt sensor is used to acquire the status signal of the speed measuring device moving to the descending arc segment at the end of the handrail belt. The control component controls the motor of the drive component to reverse according to the status signal, so that the two sets of clamping components can separate from the handrail belt.

[0015] The present invention has the following technical advantages over the prior art: 1. The speed measuring device of the present invention can be directly clamped onto the handrail belt that needs to be measured, and can run together with the handrail belt. During the operation, the speed of the handrail belt can be measured, and the data of each point of the handrail belt can be accurately obtained. By analyzing the data, the points of abnormal operation can be found.

[0016] 2. The speed measuring device of the present invention is connected to the handrail belt through two sets of clamping members. The clamping members have a cross-section that matches the arc-shaped side of the handrail belt. The clamping members have rubber pads on the slips to ensure flexible contact between the speed measuring device and the handrail belt, while increasing the friction between the contact surface and the handrail belt. This achieves a more stable clamping on the two arc-shaped sides of the handrail belt without applying excessive clamping force. In addition, the clamping members can also adapt their shape to different target devices to be measured, thereby stably clamping moving parts of different shapes, making it suitable for measurement in different scenarios.

[0017] 3. The drive assembly of the present invention uses a combination of a transmission rod and a support rod to control the movement of the clamping component. The transmission rod is used to control the movement of the clamping seat connected to it. The transmission rod has a gear section in the middle and threaded sections with opposite directions on both sides. The support rod is a smooth rod, which plays the role of supporting the clamping seat together with the transmission rod. The drive gear only drives the transmission rod to rotate. While ensuring accurate driving of the transmission component, it reduces the manufacturing and assembly difficulty of the transmission structure and provides better support.

[0018] 4. The speed measuring component of the present invention has two sets, which can measure the handrail belt simultaneously or individually, facilitating data verification and serving as backups to ensure the reliability of the measurement data. At the same time, the speed measuring wheel of the speed measuring component is located in the middle position, and support wheels are provided on both sides, which can ensure that the speed measuring wheel can effectively contact the handrail belt mounting frame in real time and is not affected by any uneven areas that may exist on the surface of the mounting frame.

[0019] 5. The speed measuring component of this invention supports the support wheel through a floating bearing. The floating bearing has an inner bearing ring and an outer bearing ring, and the elastic element between the two is arranged along the circumference of the floating bearing and extends radially. This can fully ensure the elastic floating effect of the support wheel and ensure that when it comes into contact with uneven parts of the handrail belt, the front and rear sets of support wheels are always in effective contact with the handrail belt mounting frame, thereby ensuring that the speed measuring wheel accurately acquires data.

[0020] 6. The speed measuring component of the present invention has a tilt sensor. According to the setting of the working mode of the tilt sensor, the speed measuring component can be used to measure the speed of the handrail belt of escalators and moving walkways. At the same time, the setting of the tilt sensor can ensure that when the speed measuring device runs to the descending arc segment at the end of the handrail belt, the drive component is controlled to disengage the clamping part from the handrail belt, preventing the speed measuring device from colliding with the mounting base of the escalator. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments of the present invention or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram showing the speed measuring device of the present invention installed on an escalator; Figure 2 This is a schematic diagram of the overall structure of the speed measuring device of the present invention. Figure 1 ; Figure 3 This is a cross-sectional view of the speed measuring device of the present invention; Figure 4 This is a schematic diagram of the internal structure of the speed measuring device of the present invention; Figure 5 This is a schematic diagram of the overall structure of the drive assembly of the speed measuring device of the present invention; Figure 6 This is a cross-sectional view of the drive assembly of the speed measuring device of the present invention; Figure 7 This is a structural diagram of the transmission rod of the speed measuring device of the present invention; Figure 8This is a schematic diagram of the clamping component of the speed measuring device of the present invention. Figure 9 This is a schematic diagram of the clamping mechanism of the speed measuring device of the present invention. Figure 10 This is a schematic diagram of the overall structure of the speed measuring component of the speed measuring device of the present invention; Figure 11 This is a front view of the speed measuring component of the speed measuring device of the present invention; Figure 12 This is a schematic diagram of the floating bearing structure of the speed measuring component of the speed measuring device of the present invention; Figure 13 This is a cross-sectional view of the floating bearing of the speed measuring component of the speed measuring device of the present invention. Figure 14 This is a schematic diagram of the tilt sensor structure of the speed measuring device of the present invention; Figure 15 This is a schematic diagram of the swing component structure of the tilt sensor of the speed measuring device of the present invention; Figure 16 This is a schematic diagram of the sensing element structure of the tilt sensor of the speed measuring device of the present invention; Figure 17 This is a schematic diagram of the working state of the tilt sensor of the speed measuring device of the present invention. Figure 1 ; Figure 18 This is a schematic diagram of the working state of the tilt sensor of the speed measuring device of the present invention. Figure 2 ; Figure 19 This is a schematic diagram of the overall structure of the speed measuring device of the present invention. Figure 2 ; Figure 20 This is another embodiment of the clamping assembly of the speed measuring device of the present invention; Figure 21 These are other embodiments of the clamping assembly of the speed measuring device of the present invention; Figure 22 This is a schematic diagram of the state of the speed measuring device of the present invention at the end of the speed measuring operation.

[0023] In the diagram: 100-Speed ​​measuring device; 200-Escalator; 210-Handrail; 220-Handrail mounting bracket; 300-Buffer pad; 10-Main unit; 11-Base; 111-Horizontal plate; 112-Side plate; 12-Sealing plate; 13-Top plate; 20-Drive assembly; 21-Drive base; 22-Motor; 23-Drive shaft; 24-Drive gear; 25-Transmission rod; 251-Gear segment; 252-Threaded segment one; 253-Threaded segment two; 26-Support rod; 27-Bearing; 30-Clamping assembly; 31-Clamping piece; 32-Clad shoe seat; 321-Connecting block; 322-Threaded hole; 323-Through hole; 324-Pin hole; 33-Clad shoe; 331-Mounting pin; 40-Speed ​​measuring assembly; 4 1-Roller frame; 42-Cover plate; 43-Speed ​​measuring wheel; 44-Support wheel; 45-Radial bearing; 46-Floating bearing; 461-Inner bearing ring; 462-Outer bearing ring; 463-Elastic element; 464-Accommodation groove; 50-Battery; 60-Control component; 61-Control button; 62-Display screen; 70-Tilting sensor; 71-Housing; 72-Oscillating element; 721-Sensing part two; 73-Sensing element; 731-Sensing part one; 732-Mounting plate. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0025] Therefore, the following detailed description of embodiments of the present invention is not intended to limit the scope of the claimed invention, but merely illustrates some embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0026] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.

[0027] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0028] In the description of this invention, it should be noted that the terms "upper," "lower," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this invention is in use, or the orientation or positional relationship commonly understood by those skilled in the art. These terms are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0029] This invention provides a speed measuring device for escalator handrails, such as... Figures 1 to 22 As shown, the speed measuring device 100 is mounted on the handrail belt 210. The speed measuring device 100 includes a main unit 10, a clamping assembly 30, a speed measuring assembly 40, and a control assembly 60. The control assembly 60 is used to control the operation of the speed measuring device 100. The main unit 10 has a drive assembly 20, which has a transmission rod 25 and a support rod 26. The clamping assembly 30 has two sets of clamping members 31. The transmission rod 25 and the support rod 26 are connected to the two sets of clamping members 31. The transmission rod 25 drives the two sets of clamping members 31 to achieve opening and closing movements. The clamping members 31 are clamped on the handrail belt 210. The speed measuring assembly 40 is mounted on the lower end of the clamping members 31. The speed measuring assembly 40 has a support wheel 44 and a speed measuring wheel 43. The support wheel 44 and the speed measuring wheel 43 are in contact with the handrail belt mounting bracket 220. The speed measuring wheel 43 is used to measure the running speed of the handrail belt 210.

[0030] Furthermore, the main unit 10 has a base 11, which has a horizontal plate 111 and side plates 112 at both ends, forming an overall n-shape. A drive assembly 20 is installed between the two side plates 112. Two sealing plates 12 are provided on the two sides of the base 11 to cover components installed on the base 11. The drive assembly 20 has a drive seat 21 connected to the bottom of the base 11. The base 11 has an installation and maintenance port, which is covered by a top plate 13. The drive seat 21 is connected to... The motor 22 has a drive shaft 23 that extends into the drive base 21 and connects to the drive gear 24. The middle parts of the transmission rod 25 and the support rod 26 are connected to the drive base 21. Specifically, the drive base 21 has openings on two sides through which the transmission rod 25 and the support rod 26 pass. The transmission rod 25 engages with the drive gear 24. After passing through the openings, the ends of the two components are connected to the side plate 112. A battery 50 is installed inside the base 11 to power the motor 22 and the control component 60.

[0031] Furthermore, a gear section 251 is provided in the middle of the transmission rod 25. The gear section 251 has a first threaded section 252 and a second threaded section 253 on both sides. The first threaded section 252 and the second threaded section 253 have opposite rotation directions, thereby driving the clamping member 31 to move in opposite directions. The support rod 26 is a smooth rod, used to support the clamping member 31, and does not perform transmission.

[0032] Furthermore, the transmission rod 25 passes through the drive seat 21, and both ends of the transmission rod 25 are connected to the side plate 112 through bearings 27 to ensure the rotation of the transmission rod 25. The support rod 26 is connected to the drive seat 21 and fixedly connected to the side plate 112 to ensure that the support rod 26 does not rotate but is only used for support.

[0033] Furthermore, the control component 60 has a control button 61 for controlling the movement of the clamping member 31. The clamping member 31 includes a clamp seat 32 and a clamp 33. The clamp seat 32 has an arc-shaped portion with a pin hole 324. The clamp 33 is arc-shaped and has a mounting pin 331. The clamp 33 is positioned within the pin hole 324 of the arc-shaped portion via the mounting pin 331. The clamp 33 is made of an elastic material, or it can be made of metal with a rubber layer on its arc surface to achieve contact with the handrail strap 2. The flexible contact of the 10 ensures the contact friction between the slip 33 and the handrail belt 210 without damaging the handrail belt 210. The upper end of the slip seat 32 has a connecting block 321, which has a threaded hole 322 and a through hole 323. The threaded hole 322 is connected to the transmission rod 25, and the through hole 323 is connected to the support rod 26. The advantage of making the slip 33 and the slip seat 32 separable is that when measuring different models of elevators, the shape of the handrail belt 210 is somewhat different. In this case, different slips 33 can be replaced to better clamp the handrail belt 210. Figure 20-21 As shown, the Kawa 33 can be made into different contact surface shapes, which helps to reduce manufacturing difficulty and can adapt to the clamping of armrest straps 210 of different sizes.

[0034] Furthermore, the speed measuring component 40 has a roller frame 41 with a through installation space. Specifically, the roller frame 41 is formed by four plates enclosing an installation space in the middle. A speed measuring wheel 43 and two support wheels 44 are installed within this space. The roller frame 41 has three sets of mounting holes along its length. The speed measuring wheel 43 is mounted in the middle set of mounting holes via a radial bearing 45, and the support wheels 44 are mounted in the other two sets of mounting holes via floating bearings 46. Parts of the support wheels 44 and the speed measuring wheel 43 protrude from one side of the roller frame 41 to ensure reliable contact with the handrail mounting bracket 220 without causing a collision between the roller frame 41 and the handrail mounting bracket 220. The handrail mounting bracket 220 is typically a glass panel fixed to the base of the escalator 200. The connection between the upright plate and the moving parts of the handrail belt 210 is covered with a metal strip. The speed measuring wheel 43 and the support wheel 44 are in contact with the metal strip. The speed measuring device 100 moves with the handrail belt 210. The speed measuring wheel 43 and the support wheel 44 rotate in contact with the metal strip, thereby acquiring the running speed data of the handrail belt 210. Specifically, the speed measuring wheel 43 has a speed sensor. The friction wheel of the speed sensor can rotate with the friction contact with the handrail belt mounting bracket 220. The speed sensor outputs a series of pulses. The frequency of the output pulses is proportional to the speed of the handrail belt 210, thereby acquiring the speed of the handrail belt 210. A cover plate 42 is provided on the other side of the roller frame 41 to protect the internal support wheel 44 and speed measuring wheel 43. The control component 60 has a storage section for storing the measurement data recorded by the speed measuring wheel 43.

[0035] Furthermore, the speed measuring component 40 consists of two sets. One set of speed measuring components 40 is used to measure the running speed of the handrail belt 210. The speed measuring wheel 43 of the other set of speed measuring components 40 can be replaced with a contact force measuring roller. The contact force measuring roller is equipped with a sensor that detects the contact force between the roller and the handrail belt 210. The contact force data of the handrail belt 210 during operation is obtained. By analyzing the contact force data, it can be determined that there may be vibrations caused by wear at points where the contact force changes significantly, thereby identifying potential fault points.

[0036] Furthermore, the floating bearing 46 includes an inner bearing ring 461 and an outer bearing ring 462. The outer bearing ring 462 is located outside the inner bearing ring 461. There is a gap between the inner ring surface of the outer bearing ring 462 and the outer ring surface of the inner bearing ring 461. The inner bearing ring 461 and the outer bearing ring 462 are connected by a plurality of circumferentially distributed elastic elements 463.

[0037] Furthermore, the outer ring surface of the inner bearing ring 461 is provided with a receiving groove 464, and the inner ring surface of the outer bearing ring 462 is provided with a receiving groove 464. The receiving groove 464 is an annular groove and is used to install an elastic element 463. The elastic element 463 is a spring or an elastic rubber column. The setting of the elastic element 463 can realize flexible contact between the support wheel 44 and the uneven surface that may exist on the handrail mounting bracket 220, that is, to provide buffer between the speed measuring component 40 and the handrail mounting bracket 220, and reduce the vibration and the influence of the speed measuring wheel 43.

[0038] Furthermore, such as Figure 15 , Figure 16 As shown, the speed measuring device 100 has a tilt sensor 70, which is electrically connected to the control component 60. The tilt sensor 70 is disposed inside the main unit 10. The tilt sensor 70 includes a housing 71, a swing member 72, and a sensing member 73. The swing direction of the swing member 72 is the direction in which the handrail belt 210 runs. The swing member 72 has a shaft hole and extends a certain length along the shaft hole. The cross-section of the swing member 72 is triangular. The swing member 72 is mounted inside the housing 71 by a shaft rod with a clearance fit between the swing member 72 and the shaft rod. The sensing member 73 is mounted on the inner wall of the housing 71. The sensing member 73 has a first sensing part 731 and a mounting plate 732. The first sensing part 731 is mounted on the housing 71 by the mounting plate 732. The swing member 72 has a second sensing part 721. After the swing member 72 swings forward, the second sensing part 721 contacts the first sensing part 731.

[0039] The sensing part 731 and the sensing part 721 are equipped with proximity switches. The two parts of the proximity switches are respectively disposed on the sensing part 731 and the sensing part 721. The proximity switches are preferably Hall effect proximity switches. The main body of the Hall effect proximity switch is disposed on the sensing part 731, and the magnetic component is disposed on the sensing part 721. When the swinging member 72 approaches the sensing member 73, the sensing part 731 contacts the sensing part 721, and the control component 60 obtains a signal indicating that the speed measuring device 100 has moved to a specific part of the escalator 200.

[0040] Furthermore, the sensor 73 has two components, including a front sensor and a rear sensor, which are installed on the two sides of the housing 71. The two sides of the swing member 72 each have a sensing part 721. The front sensor and the rear sensor respectively contact the two sensing parts 721 of the swing member 72. The control component 60 sets the working mode of the speed measuring device 100 according to the contact signal obtained, which is emitted by the front sensor or the rear sensor. For example, the speed measuring device 100 is set to the upward or downward mode when measuring the upward or downward state of the escalator. If it is set to the sidewalk mode when measuring the speed of the horizontal sidewalk handrail, the operator can use different modes for measurement in different scenarios.

[0041] Furthermore, the control button 61 has a display screen 62 and multiple control buttons 61. The control buttons 61 are used to control the operation of the clamping assembly 30, enabling the clamping member 31 to clamp the handrail 210 or detach from the handrail 210 in manual mode. The display screen 62 is a touch screen, used to display device status information, and also used to select the device's operating mode, set operating parameters, etc. The control buttons 61 are used to control the movement of the two sets of clamping members 31. The speed measuring device 100 can be configured with an upward mode and a downward mode, and the speed measuring device 100 is provided with an indicator to indicate the direction of device operation; such as Figure 22 As shown, the tilt sensor 70 is used to acquire the status signal of the speed measuring device 100 moving to the descending arc segment at the end of the handrail belt 210. The control component 60 controls the motor 22 of the drive component 20 to reverse according to the status signal, so that the two sets of clamping members 31 complete the separation from the handrail belt 210.

[0042] The working process of the speed measuring device of the present invention is as follows: The two sets of clamping members 31 are moved away from each other by the control button 61, and the operating mode of the speed measuring device 100 is selected as either upward or downward mode. The arrow marking of the speed measuring device 100 is kept in the same direction as the handrail belt 210. The two sets of clamping members 31 are moved towards each other by the control button 61 to fix the speed measuring device 100 on the handrail belt 210, ensuring that the speed measuring component 40 is in contact with the handrail belt mounting bracket 220. The measurement mode is activated, the escalator 200 is started, and the speed measuring wheel 43 of the speed measuring component 40 records the movement of the escalator 200. When the speed measuring device 100 moves to the top or bottom of the escalator 200, the tilt sensor 70 senses that the speed measuring device 100 has moved to the descending arc of the handrail belt 210. The storage unit stops recording measurement data, and the control component 60 controls the motor 22 of the drive component 20 to reverse, so that the two sets of clamping members 31 quickly move away from each other, and the speed measuring device 100 separates from the handrail belt 210. A buffer pad 300 is provided below the end of the escalator 200 to support the speed measuring device 100 that has detached from the handrail belt 210, thus completing the speed measurement of one handrail belt 210.

[0043] The upward mode is as follows: the starting point is the lowest point of escalator 200, such as... Figure 1 As shown, in this mode, the signal sensed by the front sensor of the sensor 73 is the separation judgment signal of the clamping member 31. When the speed measuring device 100 moves up to the upper end of the escalator 200, and then moves down with the arc of the handrail 210, i.e., when it enters the descending arc section, the swing member 72 connects with the front sensor under the action of gravity to form a contact signal. At this time, the tilt sensor 70 sends a signal to the control component 60 to control the motor 22 to reverse, so that the two clamping members 31 are separated from the handrail 210. In this mode, the front sensor only needs to obtain one signal to control the clamping member 31 to separate. The contact signals of the rear sensor are, in sequence, no signal when there is no contact in the lower horizontal section, a long signal when there is long contact during the inclined upward movement, and no signal when there is no contact in the upper horizontal section. When the rear sensor obtains the above signals, it can be determined that the speed measuring device 100 is operating normally. Otherwise, it is determined that the speed measuring device 100 may encounter an abnormal state.

[0044] The descent mode is as follows: the starting point is the highest point of the escalator 200. At this time, the signal sensed by the front sensor of the sensor 73 is the separation judgment signal of the clamping member 31. When the speed measuring device 100 moves downward with the handrail belt 210, in this mode, the contact state signals between the swing member 72 and the front sensor are sequentially: no signal when there is no contact in the upper horizontal section, long signal when there is long contact during the inclined descent, and no signal when there is no contact in the lower horizontal section. When the tilt sensor 70 detects the second no signal stage, if it detects the contact signal of the front sensor again, the tilt sensor 70 sends a signal to the control component 60 to control the motor 22 to reverse, so that the two clamping members 31 are separated from the handrail belt 210. In this mode, if the rear sensor does not obtain a signal, it is determined that the speed measuring device 100 is operating normally; otherwise, it is determined that the speed measuring device 100 may encounter an abnormal state.

[0045] In the pedestrian mode, since the pedestrian elevator moves horizontally, it is not necessary to distinguish between the signals of the front and rear sensors. As long as the contact signal between the sensor 73 and the swinging member 72 is obtained, it indicates that the speed measuring device 100 has moved to the end of the escalator 200 and entered the descending arc segment. Then, the tilt sensor 70 sends a signal to the control component 60 to control the motor 22 to reverse, so that the two clamping members 31 are disengaged from the handrail belt 210.

[0046] The speed measuring device 100 of the present invention can be directly clamped onto the handrail belt 210 that needs to be measured, and can run together with the handrail belt 210. During the operation, the speed of the handrail belt 210 can be measured, and the data of each point of the handrail belt 210 can be accurately obtained. By analyzing the data, the points of abnormal operation can be found.

[0047] The speed measuring device 100 of the present invention is connected to the handrail belt 210 by two sets of clamping members 31. The clamping members 31 have a cross section that is adapted to the arc-shaped side of the handrail belt 210. The clamping members 31 have a rubber layer on the clamping slip 33 to ensure flexible contact between the speed measuring device 100 and the handrail belt 210, while increasing the friction of the contact surface with the handrail belt 210. Without applying excessive clamping force to the handrail belt 210, it achieves a more stable clamping on the two arc-shaped side of the handrail belt 210.

[0048] The drive assembly 20 of the present invention uses a combination of a transmission rod 25 and a support rod 26 to control the movement of the clamping member 31. The transmission rod 25 is used to control the movement of the clamping seat 32 connected to it. The transmission rod 25 has a gear section 251 in the middle and threaded sections with opposite directions on both sides. The support rod 26 is a smooth rod, which plays the role of supporting the clamping seat 32 together with the transmission rod 25. The drive gear 24 only drives the transmission rod 25 to rotate. While ensuring accurate driving of the transmission component, it reduces the manufacturing and assembly difficulty of the transmission structure and provides a better support effect.

[0049] The speed measuring component 40 of the present invention has two sets, which can measure the handrail belt 210 simultaneously or individually, facilitating data verification and serving as backups to ensure the reliability of the measurement data. At the same time, the speed measuring wheel 43 of the speed measuring component 40 is located in the middle position, and support wheels 44 are provided on both sides, which can ensure that the speed measuring wheel 43 can effectively contact the handrail belt mounting frame 220 in real time and is not affected by any uneven areas that may exist on the surface of the handrail belt mounting frame 220.

[0050] The speed measuring component 40 of the present invention supports the support wheel 44 through a floating bearing 46. The floating bearing 46 has an inner bearing ring 461 and an outer bearing ring 462. The elastic element 463 between the two is arranged circumferentially and extends radially, which can fully ensure the elastic floating function of the support wheel 44. When in contact with uneven parts of the handrail belt 210, the front and rear sets of support wheels 44 are always in effective contact with the handrail belt mounting frame 220, reducing the impact of vibration on the speed measuring wheel 43, thereby ensuring that the speed measuring wheel 43 accurately acquires data.

[0051] The speed measuring component 40 of the present invention has a tilt sensor 70. According to the setting of the working mode of the tilt sensor 70, the speed measuring component 40 can be used to measure the speed of the handrail belt 210 of the escalator 200 and the sidewalk. At the same time, the setting of the tilt sensor 70 can ensure that when the speed measuring device 100 runs to the descending arc segment at the end of the handrail belt 210, the drive component 20 is controlled to disengage the clamping member 31 from the handrail belt 210, thus preventing the speed measuring device 100 from colliding with the mounting base of the escalator 200.

[0052] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A speed measuring device for an escalator handrail belt, wherein the speed measuring device is installed on the handrail belt, characterized in that, The speed measuring device includes a main unit, a clamping assembly, a speed measuring assembly, and a control assembly. The control assembly controls the operation of the speed measuring device. The main unit has a drive assembly, which includes a transmission rod and a support rod. The clamping assembly has two sets of clamping members. The transmission rod and support rod are connected to the two sets of clamping members. The transmission rod drives the two sets of clamping members to achieve opening and closing movements. The clamping members are clamped onto the handrail belt. The speed measuring assembly is installed at the lower end of the clamping members. The speed measuring assembly has a support wheel and a speed measuring wheel. The support wheel and speed measuring wheel contact the handrail belt mounting bracket. The speed measuring wheel is used to measure the running speed of the handrail belt. The control assembly has a control button for controlling the movement of the clamping members. The clamping members include a clamp seat and a clamp. The clamp seat has an arc-shaped portion with a pin hole. The clamp is arc-shaped. The slip has a mounting pin, which is set in the pin hole of the arc-shaped part; the upper end of the slip seat has a connecting block, which has a threaded hole and a through hole. The threaded hole is connected to the transmission rod, and the through hole is connected to the support rod; the speed measuring device has a tilt sensor, which is electrically connected to the control component. The tilt sensor is set in the main unit and includes a housing, a swinging component, and a sensing component. The swinging component has a shaft hole and extends a certain length along the shaft hole. The cross-section of the swinging component is triangular. The swinging component is installed in the housing through a shaft, and the swinging component and the shaft are clearance-fitted. The sensing component is installed on the inner wall of the housing. The sensing component has a sensing part one, and the swinging component has a sensing part two. After the swinging component swings forward, the sensing part two contacts the sensing part one.

2. The escalator handrail speed measuring device as described in claim 1, characterized in that, The main unit has a base, the base has a horizontal plate and a side plate, the drive assembly has a drive seat, the drive seat is connected to the bottom of the base, the drive seat is connected to a motor, the drive shaft of the motor extends into the drive seat and is connected to a drive gear, the middle part of the transmission rod and the support rod is connected to the drive seat, the transmission rod cooperates with the drive gear, and the ends of the transmission rod and the support rod are connected to the side plate.

3. The escalator handrail speed measuring device as described in claim 2, characterized in that, The transmission rod has a gear section in the middle, and the gear section has a threaded section one and a threaded section two on both sides. The threaded section one and the threaded section two have opposite directions of rotation. The support rod is a smooth rod.

4. The escalator handrail speed measuring device as described in claim 3, characterized in that, The transmission rod passes through the drive seat, and both ends of the transmission rod are connected to the side plate through bearings. The support rod is connected to the drive seat and is fixedly connected to the side plate.

5. The escalator handrail speed measuring device as described in claim 4, characterized in that, The speed measuring component has a roller frame with a through mounting space. A speed measuring wheel and two support wheels are arranged in the mounting space. The roller frame has three sets of mounting holes along its length. The speed measuring wheel is mounted in the middle set of mounting holes via a radial bearing, and the support wheels are mounted in the other two sets of mounting holes via floating bearings. The control component has a storage unit for storing the measurement data recorded by the speed measuring wheel.

6. The escalator handrail speed measuring device as described in claim 5, characterized in that, The floating bearing includes an inner bearing ring and an outer bearing ring. The outer bearing ring is located outside the inner bearing ring. There is a gap between the inner ring surface of the outer bearing ring and the outer ring surface of the inner bearing ring. The inner bearing ring and the outer bearing ring are connected by multiple circumferentially distributed elastic elements.

7. The escalator handrail speed measuring device as described in claim 6, characterized in that, The outer ring of the inner bearing ring is provided with a receiving groove, and the inner ring of the outer bearing ring is provided with a receiving groove. The receiving groove is used to install an elastic element, which is a spring or an elastic rubber column.

8. The escalator handrail speed measuring device as described in claim 1, characterized in that, The control button is used to control the movement of the two sets of clamping components. The speed measuring device has an upward mode and a downward mode. The speed measuring device is marked with an indicator indicating the direction of the device's operation. The tilt sensor is used to acquire the status signal of the speed measuring device when it moves to the descending arc segment at the end of the handrail belt. The control component controls the motor of the drive component to reverse according to the status signal, so that the two sets of clamping components can separate from the handrail belt.

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