A Coupled Contact-Type Magnetic Flux and Temperature Detection Probe Wheel and Detection Method

Abstract

The present invention discloses a coupled contact type magnetic flux and temperature detection probe wheel, which includes a mounting bracket, a wheel frame, a wheel axle, a coupled tire, a probe, an angle sensor, an ambient temperature sensor and a data acquisition and processing module; the coupled tire is mounted on the wheel axle for abutting against an external moving part and being driven to rotate by the external moving part; a plurality of probes are circumferentially and uniformly mounted on the inner circular surface of the coupled tire; the probe includes a wireless transmission module and a magnetic flux and temperature sensor module, and the magnetic flux and temperature sensor module is used for collecting the magnetic flux and temperature of the external moving part; the angle sensor is connected to the wheel axle; the data acquisition and processing module obtains the temperature state and force state of the external moving part based on the detected temperature and magnetic flux. By collecting temperature and magnetic flux data, the present invention can be used for fault analysis, positioning and prediction, providing reliable data support for the timely maintenance of the external moving part.

Description

Technical Field

[0001] The present invention belongs to the technical field of non-destructive testing, and more specifically, relates to a coupled contact type magnetic flux and temperature detection probe wheel and a detection method thereof. Background Art

[0002] A mechanical transmission mechanism is composed of a transmission device and a moving part driven by the transmission device. When the moving part moves in a cycle, for example, when a conveyor belt with metal inserts inside conveys materials, the wire rope of a vertical elevator moves up and down reciprocally, or the handrail of an escalator or the escalator step chain moves in a cycle. If the adjustment of the moving part is too tight, it will cause overheating due to excessive friction, which will result in accelerated aging, cracking, wear, etc. of the outer layer material of the moving part (if any), reducing the service life. Moreover, being too tight will also cause the brake to overheat, which is more dangerous. It may cause the temperature of the brake to rise suddenly and burn out the internal components, resulting in brake failure and shortened service life.

[0003] Currently, the maintenance of mechanical transmission mechanisms mainly adopts manual periodic maintenance and fault maintenance, that is, periodic inspections are carried out by staff when no faults occur, and repairs are carried out when faults occur. This method belongs to ex post behavior and cannot effectively prevent the occurrence of faults, which is not conducive to avoiding the occurrence of major accidents. At the same time, periodic maintenance may cause over-maintenance or untimely maintenance, resulting in a waste of a large amount of time, manpower, and material resources, with poor results and high operation difficulty and cost. In addition, since most of the main components of the mechanical transmission mechanism are in a moving state during operation, it is difficult to accurately obtain their states and locate them. Summary of the Invention

[0004] In view of the above defects or improvement requirements of the prior art, the present invention provides a coupled contact type magnetic flux and temperature detection probe wheel and a detection method thereof, which can monitor a moving mechanical transmission mechanism, collect status data for fault analysis, positioning, and prediction, provide reliable data support for the timely maintenance of escalators, and provide an effective technical means for ensuring the operation safety of escalators.

[0005] To achieve the above object, according to one aspect of the present invention, there is provided a coupled contact type magnetic flux and temperature detection probe wheel for detecting the temperature and magnetic flux of an external moving part moving in a cycle, characterized in that the probe wheel includes a mounting bracket, a wheel frame, a wheel shaft, a coupling tire, a probe, an angle sensor, an ambient temperature sensor, and a data acquisition and processing module, wherein:

[0006] The wheel frame is mounted on the mounting bracket, and the wheel shaft is rotatably mounted on the wheel frame;

[0007] The coupling tire is mounted on the wheel shaft to be abutted against an external moving part and driven to rotate by the external moving part;

[0008] A plurality of the probes are provided and are circumferentially and uniformly installed on the inner circular surface of the coupling tire;

[0009] For each of the probes, each includes a probe base, and a wireless transmission module and a magnetic flux and temperature sensor module commonly installed on the probe base. The magnetic flux and temperature sensor module includes a magnetic flux sensor and a temperature sensor to respectively collect the magnetic flux and temperature of an external moving component and transmit them to the data acquisition and processing module through the wireless transmission module;

[0010] The angle sensor is connected to the wheel axle to position the external moving component through the rotation of the coupling tire;

[0011] The ambient temperature sensor is installed on the wheel bracket to obtain the ambient temperature and transmit it to the data acquisition and processing module;

[0012] The data acquisition and processing module compares the temperature of each part of the external moving component measured by the probes with the ambient temperature obtained by the ambient temperature sensor to obtain the temperature state of the external moving component; in addition, the data acquisition and processing module obtains the force state of the external moving component according to the magnetic flux of each part of the external moving component measured by the probes.

[0013] Preferably, each of the probes further includes a wireless charging module installed on the probe base;

[0014] The probe wheel further includes a wireless charging disk cooperating with the wireless charging module. The wireless charging disk is installed on the mounting bracket to perform wireless charging on each probe, so that all the probes are alternately charged at intervals during the period, avoiding the situation of running out of power.

[0015] Preferably, the wireless charging disk is parallel to the coupling tire, and a notch is provided at the lower part of the wireless charging disk, and a charging coil is provided in the notch.

[0016] Preferably, the coupling tire is made of a flexible sheet made of graphene foam to achieve coupling by closely contacting the surface of the external moving component.

[0017] Preferably, the data acquisition and processing module includes a field collector installed on the wheel axle. The field collector includes a wireless receiving module, a wireless transmitting module and a storage module. The wireless receiving module receives the temperature and magnetic flux data collected by each probe through a wireless broadband network and transmits them to the storage module for storage, and the wireless transmitting module transmits the temperature and magnetic flux data to the on-site monitoring end through the wireless broadband network.

[0018] Preferably, the data processing module analyzes the temperature of each part of the handrail belt measured by the probe and the ambient temperature obtained by the ambient temperature sensor within a set time period, obtains the temperature difference between the temperature of each part of the handrail belt and the ambient temperature, and further obtains the average value of the temperature differences. Then, the average deviation is obtained through the temperature of each part of the handrail belt and this average value, and the corresponding time period and each part of the handrail belt are recorded, so as to obtain the temperature state of the handrail belt.

[0019] Preferably, the on-site collector is cylindrical and coaxially mounted on the axle.

[0020] Preferably, the external moving part is a conveyor belt with metal inserts, a vertical elevator steel wire rope, an escalator handrail belt or an escalator step chain.

[0021] According to another aspect of the present invention, there is also provided a detection method for the coupled contact type magnetic flux and temperature detection probe wheel, which is characterized by including the following steps:

[0022] (1) The external moving part drives the probe wheel to rotate.

[0023] (2) The probe at the position of the coupled tire in contact with the external moving part collects the temperature and magnetic flux of the external moving part.

[0024] (3) The collected temperature and magnetic flux data are transmitted to the data acquisition and processing module by wireless transmission.

[0025] (4) After receiving the temperature and magnetic flux data, the data acquisition and processing module obtains the temperature state and the force state of the external moving part.

[0026] Generally speaking, compared with the prior art through the above technical solutions conceived by the present invention, the following beneficial effects can be achieved:

[0027] (1) The probe of the coupled contact type magnetic flux and temperature detection probe wheel of the present invention is enclosed in the coupled tire. This closed structure is not easily affected by environmental factors and the measurement is more accurate.

[0028] (2) The coupled contact type magnetic flux and temperature detection probe wheel of the present invention is directly coupled and contacted with the surface of the component, and the measurement is more real.

[0029] (3) The coupled contact type magnetic flux and temperature detection probe wheel of the present invention has an independent positioning function by means of a self - carried angle sensor to independently record the position of the detected point of the moving part for the positioning of abnormal detection points.

[0030] (4) The probe adopted by the coupled contact type magnetic flux and temperature detection probe wheel of the present invention has a high transmission bandwidth, and the transmitted data capacity and quality are higher.

[0031] (5) The probe and the data processing module of the present invention can be transmitted through a wireless digital network to achieve wireless transmission and transmit a large amount of data.

[0032] (6) The probe of the coupled contact type magnetic flux and temperature detection wheel of the present invention uses wireless charging. The probe module is charged periodically at intervals, with long-lasting operation, which can avoid the situation of running out of power simultaneously and ensure the reliability of the system and the continuity of monitoring.

[0033] (7) Multiple probes are installed in the coupled contact type magnetic flux and temperature detection wheel of the present invention, with high redundancy and higher reliability. Description of the Drawings

[0034] Figure 1 is the front view of the coupled contact type magnetic flux and temperature detection wheel of the present invention;

[0035] Figure 2 is the side view of the coupled contact type magnetic flux and temperature detection wheel of the present invention;

[0036] Figure 3 is the schematic diagram of the wireless charging disk of the coupled contact type magnetic flux and temperature detection wheel of the present invention.

[0037] Figure 4 is the schematic diagram when the coupled contact type magnetic flux and temperature detection wheel of the present invention monitors on an escalator. Detailed Embodiments

[0038] In order to make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the present invention will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0039] Refer to Figures 1 to 4 , a coupled contact type magnetic flux and temperature detection wheel for detecting the temperature and magnetic flux of an external moving part 3 in circular motion. The external moving part 3 can be a conveyor belt with a metal insert, a vertical elevator steel wire rope, an escalator handrail belt or an escalator step chain. The detection wheel includes a mounting bracket 107, a wheel frame 106, a wheel shaft 105, a coupled tire 102, a probe 101, an angle sensor 104, an ambient temperature sensor 110 and a data acquisition and processing module, wherein:

[0040] The wheel frame 106 is installed on the mounting bracket 107, and the wheel shaft 105 is rotatably installed on the wheel frame 106;

[0041] The coupled tire 102 is mounted on the axle 105 for abutting against the external moving part 3 and being driven to rotate by the external moving part 3;

[0042] A plurality of the probes 101 are provided and are circumferentially and uniformly mounted on the inner circular surface of the coupled tire 102;

[0043] For each of the probes 101, each includes a probe 101 base, a wireless transmission module and a magnetic flux and temperature sensor module commonly mounted on the probe 101 base. The magnetic flux and temperature sensor module includes a magnetic flux sensor and a temperature sensor to respectively collect the magnetic flux and temperature of the external moving part 3 and transmit them to the data acquisition and processing module through the wireless transmission module.

[0044] The angle sensor 104 is connected to the axle 105 to position the external moving part 3 through the rotation of the coupled tire 102. The angle sensor 104 is outside the detection wheel 1 and autonomously records the position of the detection point for positioning abnormal temperature rise. Herein, the detection point refers to the part on the external moving part 3 detected by the probe 101. The precise positioning of the position of the detection point is achieved through the angle sensor 104.

[0045] The ambient temperature sensor 110 is mounted on the wheel frame 106 to obtain the ambient temperature and transmit it to the data acquisition and processing module;

[0046] The data acquisition and processing module compares the temperature of each part of the external moving part 3 measured by the probe 101 with the ambient temperature obtained by the ambient temperature sensor 110 to obtain the temperature state of the external moving part 3; in addition, the data acquisition and processing module obtains the force state of the external moving part 3 according to the magnetic flux of each part of the external moving part 3 measured by the probe 101.

[0047] Furthermore, each of the probes 101 further includes a wireless charging module mounted on the probe 101 base. The wireless charging module, the wireless transmission module and the magnetic flux and temperature sensor module are integrated together to form an integrated unit, making the probe 101 an integrated probe. When the coupled tire 102 of the detection wheel 1 contacts the surface of the external moving part 3, the probe 101 can collect the temperature and magnetic flux of the detection point and transmit the data to the data acquisition and processing module through the wireless network.

[0048] The detection wheel 1 further includes a wireless charging disc 108 that cooperates with the wireless charging module. The wireless charging disc 108 comes with a power cord 109 to connect to a power source. The wireless charging disc 108 is installed on the mounting bracket 107, beside the wheel bracket 106, to wirelessly charge each probe 101, so that all the probes 101 are charged alternately at periodic intervals, avoiding power failure. The wireless charging disc 108 is parallel to the coupling tire 102. A notch is provided at the lower part of the wireless charging disc 108, and a charging coil is arranged in the notch.

[0049] Further, the coupling tire 102 is made of a flexible thin sheet with good transmission performance for thermal radiation, such as a flexible thin sheet made of graphene foam, to achieve coupling by closely contacting the surface of the external moving part 3. The probe 101 can be closer to the surface of the external moving part 3 through the coupling tire 102.

[0050] Further, the data acquisition and processing module includes a field collector 103, a field monitoring end, and a remote monitoring end. The field collector 103 transmits temperature and magnetic flux data to the field monitoring end through an ultra-wideband wireless digital network. After compressing all the magnetic flux and temperature data, the field monitoring end transmits them to the remote monitoring terminal through a wireless network. The data processing module performs the following operations (preferably, the remote monitoring end of the data processing module performs the following operations, or the field monitoring end can also perform the following operations and then transmit the processed results to the remote monitoring terminal): Analyze the temperature of each part of the external moving part 3 measured by the probe 101 and the ambient temperature obtained by the ambient temperature sensor 110 within a set time period to obtain the temperature difference between the temperature of each part of the external moving part 3 and the ambient temperature, and then obtain the average value of the temperature differences. Then, obtain the average deviation through the temperature of each part of the external moving part and this average value, and record the corresponding time period and each part of the external moving part, so as to obtain the temperature state of the external moving part 3, and further obtain the working conditions of the transmission device and mechanical transmission mechanism driving the external moving part 3, such as whether the transmission device and the external moving part 3 are adjusted too tightly, whether the brake is adjusted too tightly, etc., to provide accurate state monitoring and data support for the operation of the mechanical transmission mechanism. The field collector 103 and the field monitoring end of the present invention can be integrated together and installed on the wheel axle 105 of the detection wheel 1, or both can be installed on the mounting bracket 107 of the detection wheel 1, or they can be installed separately, with the field collector 103 installed on the wheel axle 105 and the field monitoring end installed on the mounting bracket 107.

[0051] Further, the on-site collector 103 includes a wireless receiving module, a wireless transmitting module, and a storage module. The wireless receiving module receives the temperature and magnetic flux data collected by each probe 101 through a wireless broadband network and transmits the data to the storage module for storage. The wireless transmitting module transmits the temperature and magnetic flux data to the on-site monitoring terminal through a wireless broadband network.

[0052] Further, the on-site collector 103 is cylindrical and coaxially mounted on the axle 105, and can rotate with the axle 105, so as to facilitate its better reception and transmission of temperature and magnetic flux data.

[0053] According to another aspect of the present invention, there is also provided a detection method for the coupled contact type probe wheel 1, including the following steps:

[0054] (1) The external moving part 3 moves to drive the probe wheel 1 to rotate;

[0055] (2) The probe 101 at the position of the coupling tire 102 in contact with the external moving part 3 collects the temperature and magnetic flux of the external moving part 3;

[0056] (3) The collected temperature and magnetic flux data are transmitted to the on-site collector 103 of the data acquisition and processing module through a wireless transmission method, and the on-site collector 103 then transmits the data to the on-site monitoring terminal of the acquisition and processing module through a wireless transmission method;

[0057] (4) After compressing all the temperature and magnetic flux data, the on-site monitoring terminal transmits the data to the remote monitoring terminal of the acquisition and processing module through a wireless transmission method;

[0058] (5) After receiving the temperature and magnetic flux data, the remote monitoring terminal obtains the temperature state of the external moving part 3 and the stress state of the external moving part 3.

[0059] Taking the escalator handrail belt as an example, the probe wheel 1 is arranged near the handrail belt driving wheel 2, the tensioning wheel, and the end turning wheel through the mounting bracket 107 to monitor the temperature of the handrail belt under different working conditions. An on-site monitoring terminal is installed on the escalator truss 4. The specific detection method includes the following steps:

[0060] (1) When the escalator starts, the handrail belt circulates, the probe wheel 1 rotates with the movement of the external moving part 3, and the acquisition system is started;

[0061] (2) The probe wheel 1 is in coupled contact with the inner surface of the handrail belt, and the probe 101 at the position of the coupling tire 102 in contact with the handrail belt collects the temperature of the handrail belt and the magnetic flux of the steel wire embedded in the handrail belt;

[0062] (3) The collected temperature and magnetic flux data are transmitted to the on-site collector 103 through the wireless transmission module, and the on-site collector 103 then transmits the data to the on-site monitoring end through the ultra-wideband wireless digital network;

[0063] (4) The on-site monitoring end compresses all the data collected by the detection wheel 1 and then transmits it to the remote monitoring terminal;

[0064] (5) After receiving the monitoring data, the remote monitoring terminal analyzes the handrail belt temperature and ambient temperature data collected by the detection wheel 1, obtains the difference between the handrail belt temperature and the ambient temperature at the corresponding position, calculates the average value of the difference within a certain period of time, calculates the deviation, and records the corresponding time and position for analyzing the movement state of the handrail belt.

[0065] (6) After receiving the monitoring data, the remote monitoring terminal analyzes the magnetic flux data of the steel wire embedded in the handrail belt collected by the detection wheel 1 and analyzes the stress state of the moving part 3 by using the magnetoelastic effect.

[0066] Those skilled in the art can easily understand that the above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A coupled contact type magnetic flux and temperature detection probe wheel for detecting the temperature and magnetic flux of an externally moving part in circular motion, characterized in that, The detection wheel includes a mounting bracket, a wheel frame, a wheel axle, a coupling tire, a probe, an angle sensor, an ambient temperature sensor, and a data acquisition and processing module, where: The wheel frame is mounted on the mounting bracket, and the wheel axle is rotatably mounted on the wheel frame; The coupling tire is mounted on the wheel axle for abutting against an external moving part and being driven to rotate by the external moving part; A plurality of the probes are provided and are circumferentially and uniformly mounted on the inner circular surface of the coupling tire; For each of the probes, each includes a probe base, a wireless transmission module and a magnetic flux and temperature sensor module commonly mounted on the probe base. The magnetic flux and temperature sensor module includes a magnetic flux sensor and a temperature sensor to respectively collect the magnetic flux and temperature of the external moving part and transmit them to the data acquisition and processing module through the wireless transmission module; The angle sensor is connected to the wheel axle to position the external moving part through the rotation of the coupling tire; The ambient temperature sensor is mounted on the wheel frame to obtain the ambient temperature and transmit it to the data acquisition and processing module; The data acquisition and processing module compares the temperature of each part of the external moving part measured by the probe with the ambient temperature obtained by the ambient temperature sensor to obtain the temperature state of the external moving part; in addition, the data acquisition and processing module obtains the stress state of the external moving part according to the magnetic flux of each part of the external moving part measured by the probe.

2. The coupled contact type magnetic flux and temperature detection probe wheel according to claim 1, wherein Each of the probes further includes a wireless charging module mounted on the probe base; The detection wheel further includes a wireless charging plate cooperating with the wireless charging module. The wireless charging plate is mounted on the mounting bracket to perform wireless charging on each probe, so that all the probes are charged alternately at intervals to avoid power failure.

3. The coupled contact type magnetic flux and temperature detection probe wheel according to claim 2, characterized in that The wireless charging plate is parallel to the coupling tire, and a notch is provided at the lower part of the wireless charging plate, and a charging coil is provided in the notch.

4. A coupled contact type magnetic flux and temperature detection probe wheel according to claim 1, characterized in that, The coupling tire is made of a flexible sheet of graphene foam to achieve coupling by closely contacting the surface of the external moving part.

5. A coupled contact type magnetic flux and temperature detection probe wheel according to claim 1, characterized in that, The data acquisition and processing module includes a field collector mounted on the wheel axle. The field collector includes a wireless receiving module, a wireless transmitting module and a storage module. The wireless receiving module receives the temperature and magnetic flux data collected by each probe through a wireless broadband network and transmits them to the storage module for storage. The wireless transmitting module transmits the temperature and magnetic flux data to the on-site monitoring terminal through a wireless broadband network.

6. A coupled contact type magnetic flux and temperature detection probe wheel according to claim 1, characterized in that, The data acquisition and processing module analyzes the temperature of each part of the handrail belt measured by the probe and the ambient temperature obtained by the ambient temperature sensor within a set time period to obtain the temperature difference between the temperature of each part of the handrail belt and the ambient temperature, and then obtains the average value of the temperature differences. Then, the average deviation is obtained through the temperature of each part of the handrail belt and this average value, and the corresponding time period and each part of the handrail belt are recorded, so as to obtain the temperature state of the handrail belt.

7. A coupled contact type magnetic flux and temperature detection probe wheel according to claim 5, characterized in that, The field collector is in a cylindrical shape and is coaxially installed on the wheel axle.

8. A coupled contact type magnetic flux and temperature detection probe wheel according to claim 7, characterized in that, The external moving part is a conveyor belt with a metal insert or a vertical elevator wire rope.

9. The detection method of the coupled contact type magnetic flux and temperature detection probe wheel according to any one of claims 1 to 8, characterized in that, Including the following steps: (1) The external moving part moves to drive the detection wheel to rotate; (2) The probe at the coupling tire part in contact with the external moving part collects the temperature and magnetic flux of the external moving part; (3) The collected temperature and magnetic flux data are transmitted to the data acquisition and processing module by wireless transmission; (4) After receiving the temperature and magnetic flux data, the data acquisition and processing module obtains the temperature state of the external moving part and the force state of the external moving part.

Images