A motor shaft torque detection device

Abstract

The present invention relates to the technical field of torque detection, and discloses a motor shaft torque detection device, including a guide track, and also including a driving mechanism and a load mechanism arranged at both ends of the guide track; the load mechanism includes a first support connected to the guide track, the end of the first support is rotatably connected to a first shaft that rotates synchronously with the shaft body, the first shaft is fixedly connected to a cross bar at one end away from the center of the guide track, a rotating seat is arranged on the side of the cross bar, the rotating seat is rotatably connected to a blocking plate, a counterweight slider is slidably connected to the side of the cross bar away from the first shaft, the side of the counterweight slider is rotatably connected to one end of a connecting rod, and the other end of the connecting rod is rotatably connected to the blocking plate. The present invention achieves load adjustment by changing the rotation speed of the first shaft by pulling the blocking plate with the counterweight slider slidably connected to the cross bar.

Description

Technical Field

[0001] The invention relates to the technical field of torque detection, and in particular to a motor shaft torque detection device. Background Art

[0002] The shaded pole motor is a type of single-phase AC motor, which usually adopts a cage-type skewed slot cast aluminum rotor. The rotor consists of an iron core and squirrel cage bars.

[0003] Shaded pole motors are often used as power units inside household appliances. Due to their small overall size and the small diameter of the shaft inside the motor, it is necessary to detect the torque that the shaft can withstand. Conventional torque detection equipment can only perform simple rotation, and the load force is fixed, resulting in poor torque detection results, so it needs to be improved. Summary of the invention

[0004] The present invention provides a motor shaft torque detection device, which solves the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] The camshaft of the embodiment of the present invention is a kind of motor-driven transmission device, and the motor is equipped with a first gear connected to the first gear of the transmission gear, and the second gear is connected with the gear of the transmission gear to form a gearbox.

[0007] As a preferred technical solution of the present invention, the mounting support assembly includes a support block slidably connected to the guide rail, a support column is provided on the support block, a bearing seat is provided at the end of the support column, the bearing seat is detachably connected to the shaft body, and the axis lines of the bearing seat, the first shaft and the second shaft are collinear. The ends of the first shaft and the second shaft are both slidably connected to a connector detachably connected to the end of the shaft body, the connector rotates synchronously with the first shaft and the second shaft, the first support is slidably connected to the guide rail, and the second support is fixedly connected to the guide rail.

[0008] As a preferred technical solution of the present invention, both sides of the rotating seat are rotatably connected with blocking plates, a guide slide bar is provided in the middle of the rotating seat, a guide slider is slidably connected in the middle of the guide slider, the side of the guide slider is rotatably connected to one end of the support rod, and the other end of the support rod is rotatably connected to the blocking plate, the middle of the cross bar is fixedly connected to the first rotating shaft, and both sides of the cross bar are provided with blocking plates and counterweight sliders, and the blocking plates and counterweight sliders on both sides of the cross bar are symmetrical with respect to the central circumference of the first rotating shaft. A first limit plate is provided at the end of the cross bar, and a first buffer spring sleeved on the outside of the cross bar is provided between the first limit plate and the counterweight slider.

[0009] As a preferred technical solution of the present invention, a slide groove is provided in the middle of the second support, and the slide groove is slidably connected with a lifting support plate, and a lifting cylinder for adjusting the height of the lifting support plate is provided on the guide track; a lifting top plate that is lifted and lowered synchronously with the lifting support plate is provided on the side of the second support away from the guide track, and a rotating drive component that drives the second rotating shaft to rotate is provided on the lifting top plate; a locking component that limits the rotation of the second rotating shaft is provided on the side of the lifting support plate away from the center of the guide track, and only one of the locking component and the rotating drive component is connected to the second rotating shaft at the same time.

[0010] As a preferred technical solution of the present invention, the rotary drive assembly includes a driving gear rotatably connected to the lifting top plate, a driven gear meshingly connected to the driving gear is arranged on the second rotating shaft, a driving motor is arranged at the end of the lifting top plate, the output shaft of the driving motor is fixedly connected to the first pulley, and the first pulley is connected to the second pulley rotating synchronously with the driving gear through a belt. The side of the lifting support plate is slidably connected to a sliding rod, the end of the sliding rod away from the guide rail is fixedly connected to the lifting top plate, the end of the sliding rod close to the guide rail is provided with a second limit plate, and a second buffer spring is arranged between the second limit plate and the lifting support plate.

[0011] As a preferred technical solution of the present invention, the locking assembly includes a rotating rod arranged on both sides of the second rotating shaft and rotatably connected to the second support, the rotating rod is fixedly connected with an L-shaped deflection plate, one end of the L-shaped deflection plate is provided with a clamping block cooperating with the second rotating shaft, and the other end of the L-shaped deflection plate is provided with an arc head cooperating with the lifting support plate.

[0012] The present invention has the following benefits:

[0013] By sliding the counterweight slider connected to the cross bar to pull the blocking plate to rotate, the load size can be adjusted by changing the speed of the first rotating shaft, and the position change of the counterweight slider can adjust the moment of inertia, thereby simulating different working conditions when the motor is actually used, so that the final detection value is more in line with the actual working conditions and the data is more reasonable. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0015] Figure 1 The present invention is a structural schematic diagram of a motor shaft torque detection device.

[0016] Figure 2 The present invention is a front view of a motor shaft torque detection device.

[0017] Figure 3 The present invention is a schematic diagram of the structure of a motor shaft torque detection device after the shaft body is removed.

[0018] Figure 4 The present invention is a structural schematic diagram of a support assembly installed in a motor shaft torque detection device.

[0019] Figure 5 The present invention is a schematic diagram of the structure of a load mechanism in a motor shaft torque detection device.

[0020] Figure 6 The present invention is a schematic structural diagram of the cooperation between a counterweight slider and a blocking plate in a motor shaft torque detection device.

[0021] Figure 7 The present invention is a schematic diagram of the structure of a driving mechanism in a motor shaft torque detection device.

[0022] Figure 8 The present invention is a front view of a driving mechanism in a motor shaft torque detection device.

[0023] Fig. 9 The present invention is a schematic diagram of the structure of a locking assembly in a motor shaft torque detection device.

[0024] In the figure: 1, guide rail; 2, rotating shaft body; 3, mounting support assembly; 4, driving mechanism; 5, load mechanism; 6, support block; 7, support column; 8, bearing seat; 9, first support; 10, first rotating shaft; 11, connector; 12, cross bar; 13, counterweight slider; 14, connecting rod; 15, blocking plate; 16, rotating seat; 17, guide slide bar; 18, support rod; 19, guide slider; 20, first limit plate; 21, first buffer spring; 22, second support; 23. Lifting cylinder; 24. Second limit plate; 25. Second buffer spring; 26. Lifting support plate; 27. Slide groove; 28. Sliding rod; 29. ​​Guide rod; 30. Lifting top plate; 31. Second rotating shaft; 32. Driven gear; 33. Driving gear; 34. Second pulley; 35. Belt; 36. First pulley; 37. Driving motor; 38. Rotating driving assembly; 39. Locking assembly; 40. Rotating rod; 41. L-shaped deflection plate; 42. Arc head; 43. Clamping block. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] In one embodiment, see Figure 1-Figure 9 A motor shaft torque detection device comprises a guide rail 1, the cross section of the guide rail 1 adopts an I-shaped structure so as to facilitate the subsequent installation of components, and legs are arranged at both ends of the guide rail 1, so that the entire detection device can be directly placed on a desktop to maintain a stable state, a mounting support assembly 3 is arranged in the middle of the guide rail 1, and a shaft body 2 is detachably connected to the upper end of the mounting support assembly 3, the shaft body 2 is horizontally mounted on the upper end of the mounting support assembly 3, and the shaft body 2 can rotate freely, which is convenient for the subsequent torque detection processing of the shaft body 2, and also includes a driving mechanism 4 and a load mechanism 5 arranged at both ends of the wire rail;

[0027] The load mechanism 5 includes a first support 9 vertically arranged at the left end of the guide rail 1, the upper end of the first support 9 is rotatably connected to a horizontally arranged first rotating shaft 10, the first rotating shaft 10 is detachably connected to the right end of the rotating shaft body 2, the first rotating shaft 10 can rotate synchronously with the rotating shaft body 2, and a torque load is applied to the rotating shaft body 2, a cross bar 12 is vertically arranged at the left end of the first rotating shaft 10, the middle part of the cross bar 12 is fixedly connected to the left end of the first rotating shaft 10, a rotating seat 16 is arranged on both the front and rear sides of the cross bar 12, the rotating seat 16 is rotatably connected to a blocking plate 15, the side of the cross bar 12 away from the first rotating shaft 10 is slidably connected to a counterweight slider 13, the side of the counterweight slider 13 is rotatably connected to one end of a connecting rod 14, the other end of the connecting rod 14 is rotatably connected to the blocking plate 15, and the blocking plates 15 on both sides of the cross bar 12 are relative to the center of the first rotating shaft 10 Circumferential symmetry, after the rotation speed of the first rotating shaft 10 increases, the counterweight slider 13 moves in the direction away from the first rotating shaft 10, and the angle between the blocking plate 15 and the cross bar 12 decreases, that is, as the rotation speed of the first rotating shaft 10 increases, the counterweight slider 13 will slide in the direction away from the first rotating shaft 10 under the action of centrifugal force, and at this time, the counterweight slider 13 pulls the blocking plate 15 to rotate through the connecting rod 14, and the angle of the blocking plate 15 relative to the cross bar 12 decreases, so that the windward area of ​​the blocking plate 15 increases during rotation, and the resistance of the blocking plate 15 to the rotation of the cross bar 12 increases, and the blocking plates 15 on both sides of the cross bar 12 are circumferentially symmetrical, that is, the torque generated by the wind resistance of the two blocking plates 15 is the same, realizing the superposition of loads, and as the rotation speed of the first rotating shaft 10 gradually increases, the resistance that the first rotating shaft 10 needs to overcome will gradually increase;

[0028] The driving mechanism 4 includes a second support 22 vertically arranged at the right end of the guide rail 1. The upper end of the second support 22 is rotatably connected to a second rotating shaft 31 arranged in a left-right direction. The left end of the second rotating shaft 31 is detachably connected to the right end of the rotating shaft body 2, and the second rotating shaft 31 can drive the rotating shaft body 2 to rotate, providing power for the rotating shaft body 2 to rotate.

[0029] In one case of this embodiment, the mounting support assembly 3 includes a support block 6 slidably connected to the guide rail 1, a support column 7 is arranged on the support block 6, a bearing seat 8 is arranged at the end of the support column 7, the bearing seat 8 is detachably connected to the shaft body 2, the axis lines of the bearing seat 8, the first shaft 10 and the second shaft 31 are collinear, the ends of the first shaft 10 and the second shaft 31 are both slidably connected to a connector 11 detachably connected to the end of the shaft body 2, the connector 11 rotates synchronously with the first shaft 10 and the second shaft 31, the first support 9 is slidably connected to the guide rail 1, and the second support 22 is fixedly connected to the guide rail 1. By designing the mounting support assembly 3 and the load mechanism 5 to move left and right on the guide rail 1, the entire detection device can detect and process the shaft body 2 of different lengths, and the connector 11 and the bearing seat 8 can be freely replaced according to the outer diameter size of the shaft body 2, ensuring the stability of the detachable connection, and a torque detection sensor is arranged inside the connector 11, which can read the torque size at both ends of the shaft body 2 in real time.

[0030] In one case of this embodiment, both sides of the rotating seat 16 are rotatably connected with blocking plates 15, and the two blocking plates 15 are symmetrically arranged relative to the center of the rotating seat 16. A guide slide bar 17 is arranged in the middle of the rotating seat 16, and a guide slider 19 is slidably connected to the middle of the guide slide bar 17. The side of the guide slider 19 is rotatably connected to one end of the support rod 18, and the other end of the support rod 18 is rotatably connected to the blocking plate 15, so that the two blocking plates 15 can be opened or closed at the same time, and the two blocking plates 15 can be opened or closed at the same time. Figure 2 As viewed from the right side, the shaft body 2 will rotate clockwise. At this time, the wind resistance will continuously drive the two blocking plates 15 to move closer to each other, resulting in a decrease in the angle, and the counterweight slider 13 will pull the two blocking plates 15 apart from each other. If the wind resistance directly pushes the two blocking plates 15 to open, the effect of adjusting the angle of the blocking plates 15 by changing the speed cannot be achieved, and the effect of actively adjusting the load size cannot be achieved. A first limit plate 20 is provided at the end of the cross bar 12, and a first buffer spring 21 is provided between the first limit plate 20 and the counterweight slider 13 and is sleeved on the outside of the cross bar 12. Therefore, in the process of increasing speed, the centrifugal force of the counterweight slider 13 needs to offset the elastic force of the first buffer spring 21 on the one hand, and on the other hand, the centrifugal force also needs to offset the force of the wind resistance driving the two blocking plates 15 to move closer to each other. At this time, the counterweight slider 13 needs to be designed to be heavier, so that as the speed increases, the counterweight slider 13 will gradually increase the rotation radius and stably adjust the load that the first rotating shaft 10 needs to provide during rotation. By adding the first buffer spring 21, the position of the counterweight slider 13 and the change in speed are more linear, which is convenient for subsequent load adjustment.

[0031] In one case of the present embodiment, a slide groove 27 is provided in the middle of the second support 22, and the middle of the slide groove 27 is slidably connected to a horizontally arranged lifting support plate 26, and a jacking cylinder 23 fixedly connected to the guide rail 1 is provided on both the left and right sides of the second support 22, and the piston rod of the jacking cylinder 23 pushes the lifting support plate 26 to move up and down to adjust the height, and a lifting top plate 30 is horizontally provided above the second support 22, and the lifting top plate 30 will move synchronously with the lifting support plate 26, and a rotating drive component 38 is provided at the left end of the lifting top plate 30, and when the rotating drive component 38 contacts the second rotating shaft 31, the rotating drive component 38 can drive the second rotating shaft 31 The lifting support plate 26 is provided with a locking assembly 39 at the right side thereof. When the locking assembly 39 contacts the second rotating shaft 31, the second rotating shaft 31 is locked, thereby stopping the second rotating shaft 31. At the same time, only one assembly contacts the second rotating shaft 31. That is, when the rotation drive assembly 38 contacts the second rotating shaft 31, the locking assembly 39 is disengaged from the second rotating shaft 31. At this time, the rotation drive assembly 38 drives the second rotating shaft 31 to rotate. When the locking assembly 39 contacts the second rotating shaft 31, the rotation drive assembly 38 is disengaged from the second rotating shaft 31. At this time, the second rotating shaft 31 stops, thereby realizing the change of the two working states of the second rotating shaft 31.

[0032] In one case of the present embodiment, the rotary drive assembly 38 includes a driving gear 33 rotatably connected to the left side of the lower surface of the lifting top plate 30, and a driven gear 32 is arranged on the left side of the second rotating shaft 31. When the lifting top plate 30 moves downward with the lifting support plate 26, the driving gear 33 descends and contacts with the driven gear 32. At this time, the driving gear 33 can drive the driven gear 32 to rotate, that is, drive the second rotating shaft 31 to rotate, and a driving motor 37 is arranged on the left side of the upper surface of the lifting top plate 30. The output shaft of the driving motor 37 is fixedly connected to the first pulley 36, and the first pulley 36 is connected to the second pulley 34 through a belt 35. The second pulley 34 is fixedly connected to the left end of the driving gear 33. The driving motor 37 drives the driving gear 33 to rotate through the belt transmission, and the driving gear 33 drives the second rotating shaft 31 to rotate through the driven gear 32, thereby realizing the output of power. In order to reduce the accuracy of structural processing, a vertically arranged sliding rod 28 is slidably connected to the front and rear sides of the left end of the lifting support plate 26. The upper end of the sliding rod 28 is fixedly connected to the left end of the lower surface of the lifting top plate 30, and the lower end of the sliding rod 28 is fixedly connected to the second limit plate 24. A second buffer spring 25 is arranged between the second limit plate 24 and the lifting support plate 26. Therefore, when the lifting support plate 26 drives the lifting top plate 30 to move downward, if the driving gear 33 has been meshed with the driven gear 32, the lifting top plate 30 will stop descending. At this time, the second buffer spring 25 will be compressed. At this time, the lifting support plate 26 can still descend a certain distance. At this time, the gear transmission between the driving gear 33 and the driven gear 32 can be carried out stably, and the lifting support plate 26 does not need to be lowered to a precise position, which reduces the accuracy requirement of the lifting cylinder 23. In order to ensure the stable horizontal up and down movement of the lifting top plate 30, the guide rod 29 is slidably connected to the upper end of the second support 22, and the upper end of the guide rod 29 is fixedly connected to the right end of the lifting plate, so that the left and right ends of the lifting top plate 30 are both limited by movement, ensuring the horizontal lifting of the lifting top plate 30.

[0033] In one case of the present embodiment, the locking assembly 39 includes a left-right oriented rotating rod 40 arranged on the front and rear sides of the right end of the second rotating shaft 31, the left end of the rotating rod 40 is rotatably connected to the upper right side surface of the second support 22, and the right end of the rotating rod 40 is fixedly connected to the upper middle part of the L-shaped deflection plate 41, the corner of the L-shaped deflection plate 41 is protruding toward the direction of the second rotating shaft 31, and a clamping block 43 is arranged above the L-shaped deflection plate 41 near the second rotating shaft 31, the clamping block 43 can increase the friction with the second rotating shaft 31, and an arc head 42 is arranged at the lower end of the L-shaped deflection plate 41, and the arc head 42 will fall on the lifting support plate 26, the arc surface of the arc head 42 contacts with the lifting support plate 26 and slides on the lifting support plate 26. When the lifting support plate 26 moves upward, the lower end of the L-shaped deflection plate 41 is separated to the front and rear sides. At this time, the clamping block 43 at the upper end of the L-shaped deflection plate 41 will be pressed against the front and rear sides of the second rotating shaft 31, and the clamping block 43 will lock the second rotating shaft 31. At this time, the second rotating shaft 31 is locked and cannot rotate. When the lifting support plate 26 moves downward, under the action of the gravity of the arc head 42, the lower ends of the two L-shaped deflection plates 41 move closer to each other. At this time, the upper clamping block 43 will be separated from the second rotating shaft 31, and the second rotating shaft 31 can rotate freely.

[0034] During the implementation of this embodiment, the entire detection device is stably placed on the desktop. Rubber pads can be set at the bottom of the legs at both ends of the guide track 1, thereby increasing the friction between the legs and the desktop, so that the detection device remains stable during use. A suitable bearing seat 8 and connector 11 are selected according to the outer diameter of the shaft body 2, and the left and right positions of the first support 9 and the mounting support assembly 3 are adjusted according to the length of the shaft body 2. During the installation process, the mounting support assembly 3 is first moved to the left, and the shaft body 2 is inserted from right to left into the bearing seat 8, and the mounting support assembly 3 is moved to the right, the bearing seat 8 is moved to a fixed position in the middle of the shaft body 2 and fixed with the shaft body 2, the left connector 11 is pulled to the right, the left connector 11 is sleeved on the left end of the shaft body 2, and fixed, the right connector 11 is pulled to the left, the right connector 11 is sleeved on the right end of the shaft body 2, and fixed, at this time, the shaft body 2 has completed the connection with the first shaft 10 and the second shaft 31 on both sides, and the torque detection process can be performed.

[0035] In the normal load working state, the lifting cylinder 23 is started, and the lifting cylinder 23 drives the lifting support plate 26 to move downward. At this time, the driving gear 33 descends and meshes with the driven gear 32, and the driving motor 37 is started. The driving motor 37 drives the second rotating shaft 31 to rotate, and the second rotating shaft 31 drives the rotating shaft body 2 to rotate, and the rotating shaft body 2 drives the first rotating shaft 10 to rotate. At this time, the rotating shaft body 2 starts to rotate stably, simulating the load state when the motor is working, and as the speed of the driving motor 37 is increased, the speed of the rotating shaft body 2 increases. At this time, under the action of centrifugal force, the counterweight slider 13 moves in the direction away from the first rotating shaft 10, and the blocking plate 15 is pulled open. At this time, the load force that the rotating shaft body 2 needs to overcome increases, and the torque detection sensor inside the connecting head 11 can detect the torque at both ends of the rotating shaft body 2 in real time, thereby realizing the detection and processing of the rotating shaft body 2 under the torque adjustable state.

[0036] The working state when the motor is stuck is first the same as the normal load state above, so that the shaft body 2 rotates normally. When it is necessary to simulate the state in which the shaft is suddenly subjected to a large impact force when the motor is stuck, the rotation speed of the shaft body 2 can be adjusted according to the actual inertia used. The position of the counterweight slider 13 on the cross bar 12 and the change in the rotation speed of the counterweight slider 13 around the first rotating shaft 10 can adjust the rotational inertia in real time. When the parameter requirements are met, the jacking cylinder 23 is started in reverse, the lifting support plate 26 moves upward, and the driving gear 33 is disengaged from the driven gear 32. At this time, the clamping block 43 locks the second rotating shaft 31. At this time, the second rotating shaft 31 stops, and the rotating shaft body 2 stops, but the inertia of the counterweight slider 13 on the first rotating shaft 10 during high-speed rotation will be transmitted to the rotating shaft body 2 through the first rotating shaft 10, thereby simulating the force on the rotating shaft body 2 when the motor is suddenly stuck in actual work. At this time, the torque sensor inside the connector 11 at both ends can also detect the torque change in real time.

[0037] The present invention is applicable to a motor shaft torque detection device, which pulls the blocking plate 15 to rotate by a counterweight slider 13 slidably connected on a cross bar 12, thereby realizing load adjustment by changing the rotation speed of the first shaft 10, and the position change of the counterweight slider 13 can adjust the moment of inertia, thereby simulating different working conditions of the motor during actual use, so that the final detection value is more in line with the actual working condition requirements and the data is more reasonable.

[0038] 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 motor shaft torque detection device, comprising a guide track, a mounting support assembly is arranged in the middle of the guide track, and a shaft body is detachably connected to the mounting support assembly, characterized in that: It also includes a driving mechanism and a loading mechanism arranged at both ends of the guide track; The load mechanism comprises a first support connected to the guide track, the end of the first support is rotatably connected to a first rotating shaft that rotates synchronously with the rotating shaft body, one end of the first rotating shaft away from the center of the guide track is fixedly connected to a cross bar, a rotating seat is provided on the side of the cross bar, the rotating seat is rotatably connected to a blocking plate, a side of the cross bar away from the first rotating shaft is slidably connected to a counterweight slider, the side of the counterweight slider is rotatably connected to one end of a connecting rod, and the other end of the connecting rod is rotatably connected to the blocking plate, when the rotation speed of the first rotating shaft increases, the counterweight slider moves in a direction away from the first rotating shaft, and the angle between the blocking plate and the cross bar decreases; The driving mechanism comprises a second support connected to the guide track, and an end of the second support is rotatably connected to a second rotating shaft that rotates synchronously with the rotating shaft body; The swivel chair is provided with a plurality of guide rails at the middle part of the second support, and the guide rails are provided with a plurality of guide rails at the middle part of the second support, and the guide rails are provided with a plurality of guide rails at the middle part of the second support, and the guide rails are provided with a plurality of guide rails at the middle part of the second support, and the plurality of guide rails are provided with a plurality of guide rails at the middle part of the second support. The transmission gear of the present invention is a gear selected from the group consisting of a first gear and a second gear selected from the group consisting of a first gear and a second gear selected from the group consisting of a first gear and a second gear selected from the group consisting of a first gear and a second gear selected from the group consisting of a first gear and a second gear selected from the group consisting of a first gear and a second gear selected from the group consisting of a first gear and a second gear selected from the group consisting of a first gear and a second gear selected from the group consisting of a first gear and a second gear selected from the group consisting of a first gear and a second gear selected from the group consisting of a 2. A motor shaft torque detection device according to claim 1, characterized in that: The mounting support assembly includes a support block slidably connected to the guide rail, a support column is arranged on the support block, a bearing seat is arranged at the end of the support column, the bearing seat is detachably connected to the rotating shaft body, and the axis lines of the bearing seat, the first rotating shaft and the second rotating shaft are collinear.

3. A motor shaft torque detection device according to claim 2, characterized in that: The ends of the first rotating shaft and the second rotating shaft are both slidably connected with a connector that is detachably connected to the end of the rotating shaft body. The connector rotates synchronously with the first rotating shaft and the second rotating shaft. The first support is slidably connected to the guide rail, and the second support is fixedly connected to the guide rail.

4. The motor shaft torque detection device according to claim 1, characterized in that: A first limiting plate is arranged at the end of the cross bar, and a first buffer spring sleeved on the outside of the cross bar is arranged between the first limiting plate and the counterweight sliding block.

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