High-rotating-speed dynamic torque sensor based on wireless acquisition, processing and transmission signals

Abstract

The invention relates to the technical field of strain sensors, in particular to a high-rotating-speed dynamic torque sensor based on wireless acquisition, processing and transmission signals, and solves the problems that when an existing slip ring type torque sensor and an existing sleeve winding type torque sensor are used for torque monitoring, friction contact occurs between sensor wires, copper wire winding is troublesome, and the torque monitoring accuracy is high. The axial run-out monitoring device solves the problems that in the prior art, axial run-out monitoring is inconvenient in the torque monitoring process, and then the abrasion degree of a torque sensor is inconvenient to detect, and comprises a sensor installation mechanism, a transmission maintaining mechanism and an axial run-out monitoring mechanism, and the transmission maintaining mechanism is installed on the inner side of the sensor installation mechanism; and a wireless receiving module is mounted on the inner side of the upper end of the sensor mounting mechanism. According to the invention, the rotating speed and the torque of the sensor can be dynamically monitored in a wireless power supply mode, the axial runout of the sensor can be synchronously monitored, and the abrasion loss of the sensor during high-speed rotation can be conveniently detected.

Description

Technical Field

[0001] The present invention relates to the technical field of strain sensors, and in particular to a high-speed dynamic torque sensor based on wireless acquisition, processing and transmission of signals. Background Art

[0002] When using torque sensors in certain precision fields such as test and measurement, mechanical experiments, automation, and the automotive industry, the experimental equipment and measurement environment are sensitive, and the sensors are required to be as convenient as possible to ensure the integrity of the original structure of the measurement equipment and the environment. In addition, the power supply circuit of the torque sensing change area of ​​most torque sensors in the torque sensor industry is mainly realized by winding copper wires on slip rings and bushings. The power supply circuit of the torque sensing change area of ​​the slip ring type torque sensor mainly relies on the copper wire overlap between two relatively moving thin-film slip rings to realize the power supply function; The copper wire torque sensor wound on the bushing realizes power supply to the torque sensing change area through the resonance principle of the coil between two relatively moving bushings. This is a technology that integrates wireless power supply, wired signal acquisition, wireless signal transmission, and wireless acquisition and reception processing of signals. The copper wire torque sensor wound on the bushing can avoid increasing the workload of workers on the welding line.

[0003] When the existing slip ring torque sensor and sleeve wound torque sensor are performing torque monitoring, friction contact occurs between the sensor wires, the copper wire is troublesome to wind, and it is not convenient to monitor the axial runout during the torque monitoring process, and thus it is not convenient to detect the degree of wear of the torque sensor; therefore, it does not meet the existing needs. In this regard, we propose a high-speed dynamic torque sensor based on wireless acquisition and processing of transmission signals. Summary of the invention

[0004] The purpose of the present invention is to provide a high-speed dynamic torque sensor based on wireless acquisition and processing of transmission signals, so as to solve the problems raised in the above background technology that friction contact occurs between the sensor wires in the existing slip ring torque sensors and sleeve winding torque sensors during torque monitoring, the copper wire is entangled and it is not convenient to monitor the axial runout during the torque monitoring process, and thus it is not convenient to detect the degree of wear of the torque sensor.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a high-speed dynamic torque sensor based on wireless acquisition and processing of transmission signals, comprising a sensor mounting mechanism, a transmission holding mechanism and an axial runout monitoring mechanism, wherein a transmission holding mechanism is installed on the inner side of the sensor mounting mechanism, a wireless receiving module is installed on the inner side of the upper end of the sensor mounting mechanism, axial runout monitoring mechanisms are installed on both sides of the sensor mounting mechanism, and the two axial runout monitoring mechanisms are symmetrically installed relative to the sensor mounting mechanism, and the sensor mounting mechanism comprises a sensor housing, and a sensor upper cover is fixedly installed on the upper end of the sensor housing; The axial runout monitoring mechanism includes a sealing cover, which is fixedly connected to the sensor housing, a mounting box is installed on one side of the sealing cover, the inner side of the upper end of the mounting box is slidably connected to a limited angle block, one side of the limited angle block is slidably connected to a positioning seat, positioning racks are installed on both sides of the positioning seat, a mounting arc plate is installed between the two positioning racks, a transmission plate is installed on the lower end surface of the mounting arc plate, a plurality of resistance bars are installed between the transmission plate and the mounting arc plate, a support spring is provided on the lower end surface of the transmission plate, a ball head column is installed on the inner side of the support spring, pressure monitoring units are installed on both sides of the ball head column, a ball mounting block is installed on the outer side of the bottom end of the ball head column, and contact balls are installed between both ends of the ball mounting block and the mounting box.

[0006] Preferably, the sensor mounting mechanism also includes bearing retaining rings fixedly connected to the inner sides of both ends of the sensor housing, one side of one of the bearing retaining rings is provided with a first bearing mounting hole, and one side of the other bearing retaining ring is provided with a second bearing mounting hole, and the upper end surface of the sensor housing is provided with a lower plate positioning groove.

[0007] Preferably, the transmission holding mechanism includes an elastic shaft body, which is rotatably connected to the sensor housing, an inner positioning bushing is fixedly installed on the outer side of the middle part of the elastic shaft body, and an outer positioning bushing is rotatably connected to the outer side of the inner positioning bushing, a third elastic retaining spring is installed at the front end of the inner positioning bushing, a speed test gear ring is installed on the front end face of the third elastic retaining spring, a second elastic retaining spring is installed on the outer side of the elastic shaft body in front of the speed test gear ring, an input end transmission bearing is installed on the front end face of the second elastic retaining spring, a first elastic retaining spring is installed on the front end face of the input end transmission bearing, a resonant coil is installed on the rear end face of the outer positioning bushing, a starting coil is installed on the rear end face of the resonant coil, a fourth elastic retaining spring is installed on the rear end face of the starting coil, and an output end transmission bearing is installed on the rear end face of the fourth elastic retaining spring.

[0008] Preferably, the wireless receiving module includes an upper power-connected board, a lower power-connected board is installed below the upper power-connected board, the upper power-connected board and the lower power-connected board are fixedly connected by a plurality of overlapping copper pillars, a photoelectric speed sensor is fixedly installed on the lower end surface of the lower power-connected board, the lower power-connected board is plugged into the inner side of the positioning groove of the lower board, the sensor housing and the sensor cover are sleeved and installed on the outer sides of the upper power-connected board and the lower power-connected board, the upper power-connected board, the lower power-connected board, the photoelectric speed sensor and a plurality of overlapping copper pillars are electrically connected, and the bottom end of the photoelectric speed sensor passes through the positioning groove of the lower board and is sleeved on the outer side of the upper end of the speed test gear ring.

[0009] Preferably, the two pressure monitoring units are symmetrically installed relative to the ball head column, and the pressure monitoring unit includes a connecting cross seat, a threaded mounting sleeve is installed in the middle of the connecting cross seat, a pressure sensor is fixedly installed on the inner side of the threaded mounting sleeve, the threaded mounting sleeve is connected to the connecting cross seat by threads, and the threaded mounting sleeve and the pressure sensor slide linearly back and forth along the center of the connecting cross seat.

[0010] Preferably, the two ends of the elastic shaft are rotatably connected to the sensor housing through an input-end transmission bearing and an output-end transmission bearing respectively, the axis of the elastic shaft coincides with the axis of the sensor housing, the input-end transmission bearing and the elastic shaft are limitedly connected through a first elastic retaining spring and a second elastic retaining spring, the input-end transmission bearing and the output-end transmission bearing are both limitedly connected to the sensor housing through a bearing retaining ring, and the output-end transmission bearing and the elastic shaft are limitedly connected through a fourth elastic retaining spring.

[0011] Preferably, a wired acquisition module and a wireless transmission module are provided between the inner positioning sleeve and the outer positioning sleeve, the wired acquisition module and the wireless transmission module are electrically connected, and wireless communication is performed between the wireless transmission module and the wireless receiving module.

[0012] Preferably, the starting coil is fixedly mounted on the inner wall of the sensor housing, and the inner positioning sleeve, outer positioning sleeve and resonant coil are all fixedly connected to the elastic shaft. When the elastic shaft rotates relative to the starting coil, the resonant coil generates an oscillation circuit through a resonance effect and supplies power to the wired acquisition module and the wireless transmission module. The wired acquisition module performs real-time strain signal acquisition on the strain sensing change area of ​​the elastic shaft.

[0013] Preferably, the sensor housing is fixedly connected to the two mounting boxes via a sealing cover, the mounting box is movably connected to the contact ball, the bottom end of the ball head column is inserted into the inner side of the middle part of the ball mounting block, the ball head column is rotatably connected to the ball mounting block, the ball head column is connected to the transmission plate via a supporting spring, and the two ends of the ball mounting block are consistent in distance from the two pressure sensors.

[0014] Preferably, the multiple resistor bars are arranged in a circle relative to the axis of the mounting arc piece, the transmission plate is slidably connected to the multiple mounting arc pieces, both sides of the mounting arc piece are connected to the two positioning racks through tooth meshing, and the mounting arc piece is slidably connected to the positioning seat through two positioning racks.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention provides a wired acquisition module and a wireless transmission module between the inner positioning bushing and the outer positioning bushing. The resonant coil generates an oscillation circuit through a resonance effect when the elastic shaft rotates relative to the oscillating coil and supplies power to the wired acquisition module and the wireless transmission module. The wired acquisition module collects strain signals of the strain sensing change area of ​​the elastic shaft in real time and transmits the monitoring data to the wireless receiving module through the wireless transmission module. At the same time, the bottom end of the photoelectric speed sensor passes through the positioning groove of the lower plate and fits on the outer side of the speed test gear ring. When the elastic shaft drives the speed test gear ring to rotate on the inner side of the photoelectric speed sensor, the speed of the speed test gear ring can be monitored by the photoelectric speed sensor, thereby realizing wireless monitoring of the speed and dynamic torque of the elastic shaft in a high-speed rotation state. 2. The present invention generates axial runout when the elastic shaft rotates and transmits the contact ball through the input-end transmission bearing, so that the two adjacent contact balls drive the ball mounting block to swing on the outside of the ball head column. The swing amount of the ball mounting block can be monitored by two pressure sensors, and thus the axial runout of the elastic shaft can be detected. The ball head column is affected by the vibration of the ball mounting block and can drive the transmission plate to slide relative to multiple resistor bars along the radial direction of the installation arc plate through the support spring. The sliding amount of the transmission plate can be monitored by the change in the resistance value on the resistor bar, and thus the axial runout frequency when the elastic shaft rotates can be detected. By adjusting the installation position of the installation arc plate relative to the two positioning racks, the elastic contraction amount of the support spring can be controlled, and then the pressure of the ball mounting block on the contact ball can be adjusted, so as to achieve control of the monitoring sensitivity of the axial runout monitoring mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the explosion structure of the present invention as a whole; Figure 3 It is a structural schematic diagram of the wireless receiving module of the present invention; Figure 4 It is a schematic diagram of the installation structure of the axial runout monitoring mechanism of the present invention; Figure 5 It is a schematic diagram of the cross-sectional structure of the sensor housing of the present invention; Figure 6 It is a structural schematic diagram of the axial runout monitoring mechanism of the present invention; Figure 7 It is a schematic cross-sectional structure diagram of the axial runout monitoring mechanism of the present invention; Figure 8 It is a schematic diagram of the explosion structure of the positioning seat of the present invention; Fig. 9 It is a schematic diagram of the installation structure of the resistor bar of the present invention.

[0017] In the figure: 1. sensor mounting mechanism; 101. sensor upper cover; 102. sensor housing; 103. first bearing mounting hole; 104. bearing retaining ring; 105. lower plate positioning groove; 106. second bearing mounting hole; 2. transmission holding mechanism; 201. elastic shaft; 202. first elastic retaining spring; 203. input end transmission bearing; 204. second elastic retaining spring; 205. speed test gear ring; 206. third elastic retaining spring; 207. inner positioning bushing; 208. outer positioning bushing; 209. resonant coil; 210. starting coil; 211. fourth elastic retaining spring; 212. 2. Output end transmission bearing; 3. Wireless receiving module; 301. Electrically connected upper plate; 302. Electrically connected lower plate; 303. Overlap copper column; 304. Photoelectric speed sensor; 4. Axial runout monitoring mechanism; 401. Sealing cover; 402. Mounting box; 403. Contact ball; 404. Ball mounting block; 405. Pressure sensor; 406. Threaded mounting sleeve; 407. Connecting cross seat; 408. Ball head column; 409. Transmission plate; 410. Installing arc plate; 411. Positioning seat; 412. Limiting angle block; 413. Positioning rack; 414. Resistor bar; 415. Support spring. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0019] See also Figure 1 and Figure 4An embodiment of the present invention is as follows: a high-speed dynamic torque sensor based on wireless acquisition and processing of transmission signals, comprising a sensor mounting mechanism 1, a transmission holding mechanism 2 and an axial runout monitoring mechanism 4, wherein the sensor mounting mechanism 1 comprises a sensor housing 102, a sensor upper cover 101 is fixedly mounted on the upper end of the sensor housing 102, bearing retaining rings 104 are fixedly mounted on the inner sides of both ends of the sensor housing 102, one side of one bearing retaining ring 104 is provided with a first bearing mounting hole 103, and one side of the other bearing retaining ring 104 is provided with a second bearing mounting hole 106, and the upper end surface of the sensor housing 102 is provided with a lower plate positioning groove 105, and the wireless receiving module 3 is conveniently sealed and protected by the fixed connection between the sensor upper cover 101 and the sensor housing 102.

[0020] See also Figure 1 and Figure 2 A transmission holding mechanism 2 is installed on the inner side of the sensor mounting mechanism 1. The transmission holding mechanism 2 includes an elastic shaft 201, which is rotatably connected to the sensor housing 102. An inner positioning sleeve 207 is fixedly installed on the outer side of the middle part of the elastic shaft 201. An outer positioning sleeve 208 is rotatably connected to the outer side of the inner positioning sleeve 207. A third elastic retaining spring 206 is installed on the front end of the inner positioning sleeve 207. A speed test gear ring 205 is installed on the front end surface of the third elastic retaining spring 206. The front of the speed test gear ring 205 is located on the outer side of the elastic shaft 201. A second elastic retaining spring 204 is installed on the side, an input-end transmission bearing 203 is installed on the front end face of the second elastic retaining spring 204, a first elastic retaining spring 202 is installed on the front end face of the input-end transmission bearing 203, the elastic shaft body 201 coincides with the axis of the sensor housing 102, the input-end transmission bearing 203 and the elastic shaft body 201 are limitedly connected by the first elastic retaining spring 202 and the second elastic retaining spring 204, and the input-end transmission bearing 203 and the output-end transmission bearing 212 are positioned and installed by two first bearing mounting holes 103 and a bearing retaining ring 104; A resonant coil 209 is installed on the rear end face of the outer positioning sleeve 208, and an oscillating coil 210 is installed on the rear end face of the resonant coil 209. A wired acquisition module and a wireless transmission module are provided between the inner positioning sleeve 207 and the outer positioning sleeve 208. The wired acquisition module and the wireless transmission module are electrically connected, and wireless communication is performed between the wireless transmission module and the wireless receiving module 3. The oscillating coil 210 and the outer positioning sleeve 208 are fixedly installed on the inner wall of the sensor housing 102, and the inner positioning sleeve 207 and the resonant coil 209 are fixedly connected to the elastic shaft 201. The oscillating coil 210 is fixedly mounted on the inner wall of the sensor housing 102, the inner positioning sleeve 207, the outer positioning sleeve 208 and the resonant coil 209 are all fixedly connected to the elastic shaft 201, and the resonant coil 209 generates an oscillation circuit through the resonance effect when the elastic shaft 201 rotates relative to the oscillating coil 210, and supplies power to the wired acquisition module and the wireless transmission module. The wired acquisition module performs real-time strain signal acquisition on the strain sensing change area of ​​the elastic shaft 201 and wirelessly transmits the monitoring data to the wireless receiving module 3 through the wireless transmission module; A fourth elastic retaining spring 211 is installed on the rear end face of the starting coil 210, and an output end transmission bearing 212 is installed on the rear end face of the fourth elastic retaining spring 211. The two ends of the elastic shaft body 201 are rotationally connected to the sensor housing 102 through the input end transmission bearing 203 and the output end transmission bearing 212 respectively. The input end transmission bearing 203 and the output end transmission bearing 212 are both limitedly connected to the sensor housing 102 through the bearing retaining ring 104. The output end transmission bearing 212 and the elastic shaft body 201 are limitedly connected through the fourth elastic retaining spring 211, so that the elastic shaft body 201 can maintain high-speed rotation under the support of the input end transmission bearing 203 and the output end transmission bearing 212.

[0021] See also Figure 2 and Figure 3A wireless receiving module 3 is installed on the inner side of the upper end of the sensor installation mechanism 1, and the wireless receiving module 3 includes an upper power-connected plate 301, and a lower power-connected plate 302 is installed below the upper power-connected plate 301. The upper power-connected plate 301 and the lower power-connected plate 302 are fixedly connected through a plurality of overlapping copper columns 303. A photoelectric speed sensor 304 is fixedly installed on the lower end surface of the lower power-connected plate 302. The lower power-connected plate 302 is plugged into the inner side of the positioning groove 105 of the lower plate. The sensor housing 102 and the sensor cover 101 are installed on the outer sides of the upper power-connected plate 301 and the lower power-connected plate 302. The electrical upper plate 301, the electrical lower plate 302, the photoelectric speed sensor 304 and the multiple overlapping copper pillars 303 are electrically connected. The bottom end of the photoelectric speed sensor 304 passes through the positioning groove 105 of the lower plate and is fitted on the outer side of the upper end of the speed test gear ring 205. When the elastic shaft 201 drives the speed test gear ring 205 to rotate on the inner side of the photoelectric speed sensor 304, the speed of the speed test gear ring 205 can be monitored by the photoelectric speed sensor 304, thereby realizing wireless monitoring of the speed and dynamic torque of the elastic shaft 201 in the high-speed rotation state.

[0022] See also Figures 4 to 9 Axial runout monitoring mechanisms 4 are installed on both sides of the sensor installation mechanism 1. The two axial runout monitoring mechanisms 4 are symmetrically installed relative to the sensor installation mechanism 1. The axial runout monitoring mechanisms 4 include a sealing cover 401, which is fixedly connected to the sensor housing 102. A mounting box 402 is installed on one side of the sealing cover 401. The inner side of the upper end of the mounting box 402 is slidably connected to a limited angle block 412. A positioning seat 411 is slidably connected to one side of the limited angle block 412. Positioning racks 413 are installed on both sides of the positioning seat 411. A mounting arc piece 410 is installed between the two positioning racks 413. A transmission piece 409 is installed on the lower end surface of the mounting arc piece 410. The transmission piece 409 and the mounting arc piece 41 0, multiple resistor bars 414 are installed between the multiple resistor bars 414, and the multiple resistor bars 414 are arranged in a circle relative to the axis of the installation arc piece 410. The transmission piece 409 is slidably connected to the multiple installation arc pieces 410. Both sides of the installation arc piece 410 are connected to the two positioning racks 413 through tooth meshing. The installation arc piece 410 is slidably connected to the positioning seat 411 through the two positioning racks 413. The sliding amount of the transmission piece 409 can be monitored by the change of the resistance value on the resistor bar 414, and then the axial beating frequency when the elastic shaft body 201 rotates can be detected. By adjusting the installation position of the installation arc piece 410 relative to the two positioning racks 413, the monitoring sensitivity of the axial beating monitoring mechanism 4 can be controlled; A support spring 415 is provided on the lower end surface of the transmission sheet 409, and a ball stud 408 is installed on the inner side of the support spring 415. The bottom end of the ball stud 408 is inserted into the inner side of the middle part of the ball mounting block 404, and the ball stud 408 is rotatably connected with the ball mounting block 404. The ball stud 408 is connected to the transmission sheet 409 through the support spring 415. The outer side of the bottom end of the ball stud 408 is installed with a ball mounting block 404. Contact balls 403 are installed between both ends of the ball mounting block 404 and the mounting box 402. The sensor housing 102 and the two mounting boxes 402 are fixedly connected through the sealing cover 401. The mounting box 402 is movably connected with the contact balls 403. When the elastic shaft 201 rotates, axial runout is generated and the contact balls 403 are transmitted through the input end transmission bearing 203, so that the two adjacent contact balls 403 drive the ball mounting block 404 to swing on the outer side of the ball stud 408. Pressure monitoring units are installed on both sides of the ball head column 408, and the two pressure monitoring units are installed symmetrically relative to the ball head column 408. The pressure monitoring units include a connecting cross seat 407, a threaded mounting sleeve 406 is installed in the middle of the connecting cross seat 407, and a pressure sensor 405 is fixedly installed on the inner side of the threaded mounting sleeve 406. The two ends of the ball mounting block 404 are at the same distance from the two pressure sensors 405. The threaded mounting sleeve 406 is connected to the connecting cross seat 407 by threads, and the threaded mounting sleeve 406 and the pressure sensor 405 slide linearly back and forth along the center of the connecting cross seat 407. The two pressure sensors 405 can monitor the swing amount of the ball mounting block 404, and then the axial runout of the elastic shaft 201 can be detected.

[0023] During use, when the torque is detected, the input end transmission bearing 203, the speed test gear ring 205, the inner positioning bushing 207, and the output end transmission bearing 212 are installed in sequence from front to back on the outer side of the elastic shaft body 201, and the speed test gear ring 205 is limitedly installed with the elastic shaft body 201 through the third elastic retaining spring 206, and the elastic shaft body 201 is plugged into the inner side of the sensor housing 102, so that the input end transmission bearing 203 and the output end transmission bearing 212 are positioned and installed through the two first bearing mounting holes 103 and the bearing retaining ring 104, and then the sensor upper cover 101 and the sensor housing 102 are fixedly connected to facilitate the sealing protection of the wireless receiving module 3; The power supply is turned on, and power is input to the front end of the elastic shaft 201, so that the elastic shaft 201 maintains high-speed rotation under the support of the input end transmission bearing 203 and the output end transmission bearing 212. A wired acquisition module and a wireless transmission module are provided between the inner positioning sleeve 207 and the outer positioning sleeve 208. The wired acquisition module and the wireless transmission module are electrically connected. The resonant coil 209 generates an oscillation circuit through the resonance effect when the elastic shaft 201 rotates relative to the oscillating coil 210, and supplies power to the wired acquisition module and the wireless transmission module. The wired acquisition module collects real-time strain signals of the strain sensing change area of ​​the elastic shaft 201 and transmits the monitoring data wirelessly to the wireless receiving module 3 through the wireless transmission module. At the same time, the bottom end of the photoelectric speed sensor 304 passes through the positioning groove 105 of the lower plate and is fitted on the outer side of the speed test gear ring 205, so that when the elastic shaft 201 drives the speed test gear ring 205 to rotate on the inner side of the photoelectric speed sensor 304, the speed of the speed test gear ring 205 can be monitored through the photoelectric speed sensor 304, thereby realizing wireless monitoring of the speed and dynamic torque of the elastic shaft 201 in the high-speed rotation state.

[0024] During the rotation of the elastic shaft 201, radial monitoring is performed through two symmetrically installed axial runout monitoring mechanisms 4. Specifically, the bottom end of the contact ball 403 passes through the mounting box 402 and contacts the outer surface of the input-end transmission bearing 203. When the elastic shaft 201 rotates, axial runout is generated and the contact ball 403 is transmitted through the input-end transmission bearing 203, and then the two adjacent contact balls 403 drive the ball mounting block 404 to swing on the outside of the ball head column 408. The two ends of the ball mounting block 404 are at the same distance from the two pressure sensors 405, and then the swing amount of the ball mounting block 404 can be monitored through the two pressure sensors 405, and then the axial runout amount of the elastic shaft 201 can be detected; At the same time, the ball head column 408 is connected to the transmission plate 409 through the support spring 415, so that the ball head column 408 is affected by the vibration of the ball mounting block 404 and can drive the transmission plate 409 to slide radially relative to the multiple resistor bars 414 along the mounting arc plate 410 through the support spring 415. By connecting the resistor bars 414 and the transmission plate 409 to electricity, the sliding amount of the transmission plate 409 can be monitored through the change of the resistance value on the resistor bar 414, and the axial vibration frequency when the elastic shaft 201 rotates can be detected. By adjusting the installation position of the mounting arc plate 410 relative to the two positioning racks 413, the elastic contraction amount of the support spring 415 can be controlled, and then the pressure of the ball mounting block 404 on the contact ball 403 can be adjusted to achieve the control of the monitoring sensitivity of the axial vibration monitoring mechanism 4.

[0025] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A high-speed dynamic torque sensor based on wireless acquisition and processing of transmission signals, comprising a sensor mounting mechanism (1), a transmission holding mechanism (2) and an axial runout monitoring mechanism (4), characterized in that: A transmission holding mechanism (2) is installed on the inner side of the sensor mounting mechanism (1), a wireless receiving module (3) is installed on the inner side of the upper end of the sensor mounting mechanism (1), axial runout monitoring mechanisms (4) are installed on both sides of the sensor mounting mechanism (1), and the two axial runout monitoring mechanisms (4) are installed symmetrically relative to the sensor mounting mechanism (1), and the sensor mounting mechanism (1) comprises a sensor housing (102), and a sensor upper cover (101) is fixedly installed on the upper end of the sensor housing (102); The axial runout monitoring mechanism (4) comprises a sealing cover (401), the sealing cover (401) being fixedly connected to the sensor housing (102), a mounting box (402) being installed on one side of the sealing cover (401), a limited angle block (412) being slidably connected to the inner side of the upper end of the mounting box (402), a positioning seat (411) being slidably connected to one side of the limited angle block (412), positioning racks (413) being installed on both sides of the positioning seat (411), a mounting arc piece (410) being installed between the two positioning racks (413), and the mounting arc piece (410) being installed between the two positioning racks (413). 0) is installed with a transmission sheet (409) at the lower end surface, a plurality of resistance strips (414) are installed between the transmission sheet (409) and the mounting arc sheet (410), a support spring (415) is provided at the lower end surface of the transmission sheet (409), a ball head column (408) is installed on the inner side of the support spring (415), pressure monitoring units are installed on both sides of the ball head column (408), a ball mounting block (404) is installed on the outer side of the bottom end of the ball head column (408), and contact balls (403) are installed between both ends of the ball mounting block (404) and the mounting box (402).

2. A high-speed dynamic torque sensor based on wireless acquisition, processing and transmission of signals according to claim 1, characterized in that: The sensor mounting mechanism (1) further comprises bearing retaining rings (104) fixedly connected to the inner sides of both ends of the sensor housing (102), wherein one side of one of the bearing retaining rings (104) is provided with a first bearing mounting hole (103), and one side of the other bearing retaining ring (104) is provided with a second bearing mounting hole (106), and the upper end surface of the sensor housing (102) is provided with a lower plate positioning groove (105).

3. A high-speed dynamic torque sensor based on wireless acquisition, processing and transmission of signals according to claim 2, characterized in that: The transmission holding mechanism (2) comprises an elastic shaft (201), the elastic shaft (201) being rotatably connected to the sensor housing (102), an inner positioning sleeve (207) being fixedly mounted on the outer side of the middle portion of the elastic shaft (201), an outer positioning sleeve (208) being rotatably connected to the outer side of the inner positioning sleeve (207), a third elastic retaining spring (206) being mounted on the front end of the inner positioning sleeve (207), a speed test gear ring (205) being mounted on the front end surface of the third elastic retaining spring (206), and the front end of the speed test gear ring (205) being located at the front of the elastic shaft (201). A second elastic retaining spring (204) is installed on the outside, an input-end transmission bearing (203) is installed on the front end surface of the second elastic retaining spring (204), a first elastic retaining spring (202) is installed on the front end surface of the input-end transmission bearing (203), a resonant coil (209) is installed on the rear end surface of the outer positioning bushing (208), an oscillating coil (210) is installed on the rear end surface of the resonant coil (209), a fourth elastic retaining spring (211) is installed on the rear end surface of the oscillating coil (210), and an output-end transmission bearing (212) is installed on the rear end surface of the fourth elastic retaining spring (211).

4. A high-speed dynamic torque sensor based on wireless acquisition, processing and transmission of signals according to claim 3, characterized in that: The wireless receiving module (3) comprises an upper power-connecting board (301), a lower power-connecting board (302) is installed below the upper power-connecting board (301), the upper power-connecting board (301) and the lower power-connecting board (302) are fixedly connected via a plurality of overlapping copper pillars (303), a photoelectric speed sensor (304) is fixedly installed on the lower end surface of the lower power-connecting board (302), and the lower power-connecting board (302) is plugged into the inner side of the positioning groove (105) of the lower board. The sensor housing (102) and the sensor upper cover (101) are sleeved and installed on the outer sides of the power-connected upper plate (301) and the power-connected lower plate (302); the power-connected upper plate (301), the power-connected lower plate (302), the photoelectric speed sensor (304) and a plurality of overlapping copper pillars (303) are electrically connected; the bottom end of the photoelectric speed sensor (304) passes through the positioning groove (105) of the lower plate and is sleeved on the outer side of the upper end of the speed test gear ring (205).

5. The high-speed dynamic torque sensor based on wireless acquisition, processing and transmission of signals according to claim 4 is characterized in that: The two pressure monitoring units are symmetrically mounted relative to the ball head column (408), and the pressure monitoring units include a connecting cross seat (407), a threaded mounting sleeve (406) is mounted in the middle of the connecting cross seat (407), a pressure sensor (405) is fixedly mounted on the inner side of the threaded mounting sleeve (406), the threaded mounting sleeve (406) is connected to the connecting cross seat (407) by threads, and the threaded mounting sleeve (406) and the pressure sensor (405) slide linearly back and forth along the center of the connecting cross seat (407).

6. The high-speed dynamic torque sensor based on wireless acquisition, processing and transmission of signals according to claim 5, characterized in that: The two ends of the elastic shaft (201) are rotationally connected to the sensor housing (102) via an input-end transmission bearing (203) and an output-end transmission bearing (212), respectively; the axis of the elastic shaft (201) coincides with the axis of the sensor housing (102); the input-end transmission bearing (203) and the elastic shaft (201) are position-limitedly connected via a first elastic retaining spring (202) and a second elastic retaining spring (204); the input-end transmission bearing (203) and the output-end transmission bearing (212) are both position-limitedly connected to the sensor housing (102) via a bearing retaining ring (104); and the output-end transmission bearing (212) and the elastic shaft (201) are position-limitedly connected via a fourth elastic retaining spring (211).

7. A high-speed dynamic torque sensor based on wireless acquisition, processing and transmission of signals according to claim 6, characterized in that: A wired acquisition module and a wireless transmission module are provided between the inner positioning sleeve (207) and the outer positioning sleeve (208); the wired acquisition module and the wireless transmission module are electrically connected; and wireless communication is performed between the wireless transmission module and the wireless receiving module (3).

8. The high-speed dynamic torque sensor based on wireless acquisition, processing and transmission of signals according to claim 7, characterized in that: The oscillating coil (210) is fixedly mounted on the inner wall of the sensor housing (102); the inner positioning sleeve (207), the outer positioning sleeve (208) and the resonant coil (209) are all fixedly connected to the elastic shaft (201); the resonant coil (209) generates an oscillating circuit through a resonance effect when the elastic shaft (201) rotates relative to the oscillating coil (210) and supplies power to a wired acquisition module and a wireless transmission module; the wired acquisition module performs real-time strain signal acquisition on the strain sensing change area of ​​the elastic shaft (201).

9. The high-speed dynamic torque sensor based on wireless acquisition, processing and transmission of signals according to claim 8, characterized in that: The sensor housing (102) and the two mounting boxes (402) are fixedly connected via a sealing cover (401); the mounting box (402) is movably connected to the contact ball (403); the bottom end of the ball head column (408) is plugged into the inner side of the middle of the ball mounting block (404); the ball head column (408) is rotatably connected to the ball mounting block (404); the ball head column (408) is connected to the transmission plate (409) via a supporting spring (415); and the distances between the two ends of the ball mounting block (404) and the two pressure sensors (405) are consistent.

10. The high-speed dynamic torque sensor based on wireless acquisition, processing and transmission of signals according to claim 9, characterized in that: The plurality of resistor bars (414) are arranged in a circle relative to the axis of the mounting arc piece (410); the transmission piece (409) is slidably connected to the plurality of mounting arc pieces (410); both sides of the mounting arc piece (410) are connected to two positioning racks (413) through tooth meshing; and the mounting arc piece (410) is slidably connected to the positioning seat (411) through the two positioning racks (413).

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