Torque detection device

Abstract

The invention discloses a torque detection device which comprises a positioning tool, a rotating mechanism and a deviation detection mechanism. The driven gear comprises a main gear and an auxiliary gear, the positioning tool is used for placing and positioning the driven gear, the rotating mechanism is used for driving the auxiliary gear to rotate, the rotating mechanism can move in the direction close to or away from the positioning tool, and the rotating mechanism is provided with a torque sensor; the deviation detection mechanism is arranged on one side of the positioning tool so as to detect the angle deviation between the main teeth and the auxiliary teeth. According to the invention, mechanical detection with a higher automation degree is used for replacing manual torsion of a torque wrench by a worker for detection, so that the detection precision is higher; the positioning tool is matched with the rotating mechanism to perform relative rotation on the main tooth and the auxiliary tooth, and the torque sensor is used for monitoring the torque of the main tooth and the auxiliary tooth; meanwhile, the high alignment degree between the main teeth and the auxiliary teeth is guaranteed through a deviation detection structure; the feeding mechanism is provided with the working position and the feeding position, and when the working position is used for detection, a worker feeds materials to the feeding position, so that the feeding time is saved, and the working efficiency is improved.

Description

Technical Field

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

[0002] Balance shaft technology is a widely used technology in motorcycle engines. It has a simple and practical structure, which can effectively reduce the vibration of the entire motorcycle and improve driving comfort. The single balance shaft uses a single balance shaft and works by gear transmission. The crankshaft rotates to drive the fixed balance shaft drive gear - balance shaft driven gear - balance shaft. The single balance can balance the first-order vibration that accounts for a considerable proportion of the entire vibration, which can significantly improve the vibration of the engine. Because the single balance shaft method has a simple structure and occupies a small space, it is widely used in single-cylinder and small-displacement engines.

[0003] Among them, the driven gear of the balance shaft is an important component, which is composed of a main gear and a secondary gear that can rotate with each other coaxially. In order to ensure the quality of the driven gear, the driven gear needs to be tested for torque before production. Unqualified driven gears will cause the engine to run noisy and shorten the life of the balance shaft assembly. In the prior art, manual torque testing is usually performed by staff. The specific operation is: manually assemble the indicator torque wrench with the driving gear flange, turn the indicator torque wrench, visually observe the torque value displayed on the indicator and record it; if it is found that it does not meet the technical requirements of the product, rework is required. However, such manual testing not only has large measurement errors, but also has low efficiency. Summary of the invention

[0004] In view of the above-mentioned deficiencies in the prior art, the technical problem to be solved by the present invention is to provide a torque detection device.

[0005] In order to solve the above technical problems, a technical solution adopted by the present invention is: to provide a torque detection device for detecting the torque of the driven gear of the balance shaft, including a positioning tool and a rotating mechanism, and also including a deviation detection mechanism; the driven gear includes a main tooth and a secondary tooth that are coaxially arranged and can elastically twist against each other, the positioning tool is used to place the driven gear and position the main tooth, the rotating mechanism is used to drive the secondary tooth to rotate, and the rotating mechanism can move in a direction close to or away from the positioning tool, and a torque sensor is also provided on the rotating mechanism; the deviation detection mechanism is arranged on one side of the positioning tool to detect the angular deviation between the main tooth and the secondary tooth.

[0006] Furthermore, the main tooth and the auxiliary tooth have a first through hole at the axis center, and the main tooth has a second through hole at the eccentric position;

[0007] The positioning tool includes a cylinder, a first positioning pin and a second positioning pin. The cylinder is vertically arranged and the outer diameter of the cylinder is smaller than the outer diameter of the driven gear. The first positioning pin is vertically arranged at the axis of the cylinder and the outer diameter of the first positioning pin matches the inner diameter of the first through-hole. The height of the first positioning pin is greater than the height of the driven gear. The second positioning pin is arranged at a position on the cylinder corresponding to the second through-hole and the outer diameter of the second positioning pin matches the inner diameter of the second through-hole.

[0008] Furthermore, the auxiliary tooth has a third through hole at an eccentric position, and the rotating mechanism includes a turntable arranged opposite to the cylinder, the turntable can rotate along its own axis, and a third positioning pin is provided at a position corresponding to the third through hole on an end surface of the turntable facing the cylinder, and the outer diameter of the third positioning pin matches the inner diameter of the third through hole.

[0009] Furthermore, the rotating mechanism further comprises a motor for driving the rotating disk to rotate and a vertical driving assembly for driving the rotating disk to move vertically to approach or move away from the cylinder;

[0010] The vertical drive assembly includes a first slide rail and a first slider slidably connected to the first slide rail, the first slide rail is vertically arranged, the motor is arranged at the upper end of the first slider and the driving shaft of the motor passes through the first slider downward, the torque sensor is arranged on the driving shaft, and the turntable is arranged at the lower end of the driving shaft.

[0011] Furthermore, the deviation detection mechanism includes a first stop block, a second stop block and a second slide rail driving the first stop block and the second stop block to move, the second slide rail is horizontally arranged with one end facing the cylinder, the first stop block is slidably connected to the second slide rail and the first stop block corresponds to the height of the main tooth, the second stop block is arranged on the first stop block and can move along the length direction of the first stop block, the second stop block corresponds to the height of the auxiliary tooth, and a first elastic reset member is also provided between the first stop block and the second stop block, and the first elastic reset member is located at the end of the first stop block away from the cylinder.

[0012] Furthermore, it also includes a controller which is signal-connected to the motor, the first slide rail, the second slide rail and the torque sensor. The controller is equipped with an indicator light which is used to indicate the detection result of the driven gear.

[0013] Furthermore, it also includes a loading mechanism, which includes a horizontally arranged flat plate, and the flat plate can rotate horizontally with its own axis as the center of the circle, the position of the flat plate opposite to the turntable is the working position, and the remaining positions are loading positions, and the positioning tooling has several and is respectively located at the working position and the loading position; a limiting component is provided between the flat plate and the positioning tooling so that the positioning tooling located at the working position can be limited to the working position.

[0014] Furthermore, the positioning tooling, the rotating mechanism and the plate are all arranged on an operating platform and the lower end surface of the plate has a height difference with the operating platform, the limiting assembly includes a fixed block, a sliding rod and a second elastic reset member, each of the cylinders is vertically penetrated with a through hole, and the through hole also vertically penetrates the plate downward, the sliding rod is vertically slid in the through hole, the second elastic reset member is arranged between the sliding rod and the through hole, when the second elastic reset member is naturally extended, the upper end of the sliding rod extends out of the cylinder, and when the second elastic reset member is compressed, the lower end of the sliding rod extends out of the plate, the fixed block is fixed on the operating platform at a position corresponding to the working position, the upper end of the fixed block is provided with a socket for the sliding rod to be inserted, and the fixed block is truncated cone-shaped.

[0015] Furthermore, a cavity is opened at a position of the cylinder corresponding to the middle section of the through hole, the cavity is coaxial with the through hole and the inner diameter of the cavity is larger than the inner diameter of the through hole, a sliding plate is installed at a position of the sliding rod corresponding to the cavity, the sliding plate is slidably connected to the cavity, and the second elastic return piece is sleeved on the outer periphery of the sliding rod and located between the sliding plate and the bottom wall of the cavity.

[0016] Furthermore, the second elastic return member is a coil spring.

[0017] A torque detection device of the present invention has at least the following beneficial effects: a more automated mechanical detection is used to replace the worker's manual torque wrench detection, and the detection accuracy is higher; the positioning tool is coordinated with the rotating mechanism to rotate the main teeth and the auxiliary teeth relative to each other, and the torque of the two is monitored by a torque sensor; at the same time, a deviation detection structure is used to ensure a high alignment between the main teeth and the auxiliary teeth; the feeding mechanism is provided with a working position and a feeding position, and when the working position is performing detection work, the worker can feed the material to the upper material position, thus saving the feeding time and improving the work efficiency; the various structures cooperate closely, the degree of automation is high, the detection accuracy is high, and the detection efficiency is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0019] Figure 1 The structure of the driven gear in one embodiment of a torque detection device of the present invention is schematically shown in FIG. Figure 1 ;

[0020] Figure 2 The structure of the driven gear in one embodiment of a torque detection device of the present invention is schematically shown in FIG. Figure 2 ;

[0021] Figure 3 It is a structural schematic diagram of an embodiment of a torque detection device of the present invention;

[0022] Figure 4 It is a structural schematic diagram of a feeding mechanism in one embodiment of a torque detection device of the present invention;

[0023] Figure 5 It is a structural schematic diagram of a rotating mechanism in an embodiment of a torque detection device of the present invention;

[0024] Figure 6 It is a structural schematic diagram of a deviation detection mechanism in one embodiment of a torque detection device of the present invention.

[0025] The meanings of the symbols in the accompanying drawings are:

[0026] Driven gear 1, main tooth 11, auxiliary tooth 12, first perforation 13, second perforation 14, third perforation 15, frame 2, operating platform 21, feeding mechanism 3, working position 31, feeding position 32, plate 33, positioning tool 4, cylinder 41, first positioning pin 42, second positioning pin 43, through hole 44, cavity 45, rotating mechanism 5, turntable 51, motor 52, first slide rail 53, first slider 54, torque sensor 55, third positioning pin 56, bracket 57, deviation detection mechanism 6, first stop block 61, second stop block 62, second slide rail 63, second slider 64, protrusion 65, connecting rod 66, first elastic reset member 67, limit assembly 7, fixed block 71, slide rod 72, second elastic reset member 73, slide sheet 74, jack 75, controller 8, display screen 81. DETAILED DESCRIPTION

[0027] The present invention will be further described below in conjunction with the accompanying drawings.

[0028] The torque detection device of the present invention is used to detect the torque of the driven gear 1 in the balance shaft assembly. Figure 1 and Figure 2In order to explain the structure of the present invention more clearly, the external structure of the driven gear 1 is explained first. The driven gear 1 includes a main tooth 11 and an auxiliary tooth 12 which are coaxially arranged and can be elastically twisted with each other. The main tooth 11 and the auxiliary tooth 12 have the same outer diameter. The main tooth 11 and the auxiliary tooth 12 have a first through hole 13 at the axis center, the main tooth 11 has a second through hole 14 at the eccentric position, and the auxiliary tooth 12 has a third through hole 15 at the eccentric position.

[0029] Please refer to Figure 3 A torque detection device of the present invention comprises a frame 2, a feeding mechanism 3, a positioning fixture 4, a rotating mechanism 5, a deviation detection mechanism 6 and a controller 8. The frame 2 has an operating platform 21, and the feeding mechanism 3, the rotating mechanism 5 and the controller 8 are all arranged on the operating platform 21. The feeding mechanism 3 has a working position 31 and a feeding position 32, and the working position 31 and the feeding position 32 of the feeding mechanism 3 are both provided with the positioning fixture 4. The positioning fixture 4 is used to place the driven gear 1 and position the main tooth 11. The rotating mechanism 5 is used to drive the auxiliary tooth 12 to rotate relative to the main tooth 11, and the rotating mechanism 5 can move in a direction close to or away from the positioning fixture 4. The rotating mechanism 5 is also provided with a torque sensor 55 to detect the torque between the main tooth 11 and the auxiliary tooth 12. The deviation detection mechanism 6 is arranged on one side of the positioning fixture 4 to detect the angular deviation between the main tooth 11 and the auxiliary tooth 12.

[0030] Please refer to Figure 4 The feeding mechanism 3 includes a horizontally arranged flat plate 33, which is circular in shape. The flat plate 33 is rotatably arranged on the operating platform and the axis of the lower end surface of the flat plate 33 is rotatably connected to the operating platform. The lower end surface of the flat plate 33 has a height difference with the upper end surface of the operating platform. The position of the leftmost section on the flat plate 33 is the working position 31 (specifically, the position directly opposite to the rotating mechanism 5 is the working position 31), and the remaining positions are all feeding positions 32. Several positioning fixtures 4 are respectively located on the working position 31 and the feeding position 32. In the embodiment shown, the number of the feeding position 32 is one, and the working position 31 and the feeding position 32 are located at the two ends of one diameter of the flat plate 33, that is, the working position 31 and the feeding position 32 are symmetrically arranged. In other embodiments, the number of the feeding positions 32 can also be other, as long as the working position 31 and several of the feeding positions 32 are distributed around the axis of the flat plate 33.

[0031] Each of the positioning fixtures 4 includes a cylinder 41, a first positioning pin 42 and a second positioning pin 43. The cylinder 41 is vertically arranged on the flat plate 33, specifically, arranged at the working position 31 or the loading position 32. The first positioning pin 42 is vertically arranged at the axis of the cylinder 41 and the outer diameter of the first positioning pin 42 matches the inner diameter of the first through hole 13, and the height of the first positioning pin 42 is greater than the height of the driven gear 1. The second positioning pin 43 is arranged at a position on the cylinder 41 corresponding to the second through hole 14 and the outer diameter of the second positioning pin 43 matches the inner diameter of the second through hole 14.

[0032] A limiting assembly 7 is provided between the positioning fixture 4 and the plate 33 so that the positioning fixture 4 located at the working position 31 can be limited to the working position 31. The limiting assembly 7 includes a fixed block 71, a slide bar 72 and a second elastic reset member 73. The cylinder 41 in each of the positioning fixtures 4 is vertically penetrated with a through hole 44, and the through hole 44 also vertically penetrates the plate 33 downward. Taking one of the positioning fixtures 4 as an example (the rest of the positioning fixtures 4 are the same as the positioning fixture 4), the through hole 44 is equipped with the slide bar 72, the outer diameter of the slide bar 72 matches the inner diameter of the through hole 44 and can slide vertically along the through hole 44. The cylinder 41 is provided with a cavity 45 at a position corresponding to the middle section of the through hole 44, the cavity 45 is coaxial with the through hole 44 and the inner diameter of the cavity 45 is larger than the inner diameter of the through hole 44. The slide bar 72 is provided with a slide plate 74 at a position corresponding to the cavity 45. The outer diameter of the slide plate 74 matches the inner diameter of the cavity 45 and can slide vertically along the through hole 44. The second elastic reset member 73 is sleeved on the outer periphery of the slide bar 72 and is located between the lower end surface of the slide plate 74 and the bottom wall of the cavity 45. When the second elastic reset member 73 is naturally extended, the upper end of the slide bar 72 extends out of the cylinder 41, and when the second elastic reset member 73 is compressed, the lower end of the slide bar 72 extends out of the plate 33. In the embodiment shown, the second elastic reset member 73 is a coil spring. In other embodiments, the second elastic reset member 73 can also be an elastic element such as a spring, as long as it can drive the slide bar 72 to reset upward. The fixed block 71 is fixedly arranged on the operating platform at a position corresponding to the working position 31. The upper end of the fixed block 71 is provided with a socket 75 for inserting the slide bar 72. The fixed block 71 is in a truncated cone shape.

[0033] Please refer to Figure 5The rotating mechanism 5 includes a turntable 51, a motor 52 for driving the turntable 51 to rotate, and a vertical driving assembly for driving the turntable 51 to move vertically to approach or move away from the cylinder 41. The vertical driving assembly includes a first slide rail 53 and a first slider 54 slidably connected to the first slide rail 53. The first slide rail 53 is vertically arranged, and the first slide rail 53 is fixed on the operating platform 21 through a bracket 57. The motor 52 is arranged at the upper end of the first slider 54 and the driving shaft of the motor 52 passes through the first slider 54 downward and extends out, the torque sensor 55 is arranged on the driving shaft, and the turntable 51 is arranged at the lower end of the driving shaft. A third positioning pin 56 is arranged at a position corresponding to the third through hole 15 on one end surface of the turntable 51 facing the cylinder 41 (i.e., the lower end surface of the turntable 51), and the outer diameter of the third positioning pin 56 matches the inner diameter of the third through hole 15.

[0034] Please refer to Figure 6 The deviation detection mechanism 6 includes a first stopper 61, a second stopper 62, and a second slide rail 63 for driving the first stopper 61 and the second stopper 62 to move. The second slide rail 63 is horizontally arranged with one end facing the cylinder 41, and the length direction of the second slide rail 63 is tangent to the rotating disk 51. A second slider 64 is slidably arranged on the second slide rail 63, the first stopper 61 is slidably connected with the second slide rail 63, and the first stopper 61 corresponds to the height of the main tooth 11, and the first stopper 61 is arranged along the length direction of the second slide rail 63. The second stopper 62 is arranged on the first stopper 61 and can move along the length direction of the first stopper 61, and the second stopper 62 corresponds to the height of the auxiliary tooth 12. A convex block 65 is upwardly protruded at a position on the upper end surface of the first stopper 61 away from the second stopper 62, and a connecting rod 66 is arranged on the convex block 65, and the connecting rod 66 is arranged along the length direction of the first stopper 61. A first elastic reset member 67 is provided between the end of the connecting rod 66 away from the protrusion 65 and the second stop 62. When the first elastic reset member 67 is in a naturally extended state, the first stop 61 is flush with the end of the second stop 62 (the end away from the protrusion 65). In the illustrated embodiment, the first elastic reset member 67 is a coil spring. In other embodiments, the first elastic reset member 67 may also be an elastic element such as a spring sheet, as long as it can bring about a tendency for the second stop 62 to move and reset in a direction away from the first elastic reset member 67. A tooth sensor (not shown in the figure) is provided between the first stop 61 and the second stop 62. The tooth sensor is used to detect the displacement deviation between the first stop 61 and the second stop 62, so as to know the deviation between the main tooth 11 and the auxiliary tooth 12.

[0035] The controller 8 is signal-connected with the motor 52, the first slide rail 53, the second slide rail 63, the torque sensor 55, and the tooth-matching sensor (the first slide rail 53 and the second slide rail 63 are both electric slide rails). The controller 8 can control the working states of the motor 52, the first slide rail 53, the second slide rail 63, the torque sensor 55, and the tooth-matching sensor, and can also receive information from the torque sensor 55 and the tooth-matching sensor. The controller 8 has a display screen 81 that can display the detection results.

[0036] One embodiment of a torque detection device of the present invention works as follows: in an initial state, one of the positioning fixtures 4 is located at the working position 31, and one of the positioning fixtures 4 is located at the loading position 32. No driven gear 1 is placed on the two positioning fixtures 4, that is, the slide bars 72 in the two positioning fixtures 4 do not extend downward from the flat plate 33. The second slider 64 is located at one end of the second slide rail 63 away from the loading mechanism 3, and the first slider 54 is located at the upper end of the first slide rail 53.

[0037] The worker is located in front of the operating platform 21 and places the driven gear 1 to be tested on the loading position 32. When placing the driven gear 1, the first pin is aligned with the first through hole 13 and the second pin is aligned with the second through hole 14, so that the driven gear 1 is positioned to prevent it from rotating. At this time, under the gravity of the driven gear 1, the slide bar 72 is pressed down until the upper end is flush with the upper end of the cylinder 41, and the lower end of the slide bar 72 extends downward from the flat plate 33, and the second elastic reset member 73 is in a compressed state. The plate 33 is rotated to rotate the positioning fixture 4 located at the loading position 32 to the working position 31. Since the fixing block 71 is in a truncated cone shape, that is, its outer peripheral wall is sloped, when the lower end of the slide rod 72 touches the side wall of the fixing block 71, it will gradually move upward along the inclined side wall of the fixing block 71 until the lower end of the slide rod 72 moves to the upper end surface of the fixing block 71. When the lower end of the slide rod 72 is aligned with the insertion hole 75, the slide rod 72 moves downward and is inserted into the insertion hole 75 under the dual action of the gravity of the driven gear 1 and the rebound force of the second elastic reset member 73, thereby limiting the plate 33 so that it cannot rotate, and the positioning fixture 4 is fixed to the working position 31.

[0038] The first slide rail 53 is started to move the first slider 54 downward until the third positioning pin 56 is inserted into the third through hole 15, and the motor 52 is started. The motor 52 rotates to drive the turntable 51 to rotate, and the turntable 51 drives the auxiliary tooth 12 to rotate relative to the main tooth 11 through the third positioning pin 56. When the turntable 51 drives the auxiliary tooth 12 to rotate several degrees so that the tooth surfaces of the main tooth 11 and the auxiliary tooth 12 are close to the overlapped position, the rotation is temporarily stopped. The second slider 64 is slid on the second slide rail 63 to approach the driven gear 1, so that the end of the first abutment 61 abuts against a convex tooth of the main tooth 11, and the end of the second abutment 62 abuts against a convex tooth of the auxiliary tooth 12, and the convex tooth of the main tooth 11 and the convex tooth of the auxiliary tooth 12 are close to overlap. The tooth matching sensor can monitor the distance between the ends of the first abutment 61 and the second abutment 62, that is, it can monitor the deviation between the convex tooth of the main tooth 11 and the convex tooth of the auxiliary tooth 12. The motor 52 is driven to continue rotating, so that the auxiliary teeth 12 continue to rotate relative to the main teeth 11, until the deviation between the main teeth 11 and the auxiliary teeth 12 is less than 0.01 mm, and the rotation stops. At this time, the main teeth 11 and the auxiliary teeth 12 can be regarded as completely overlapping, and the value monitored by the torque sensor 55 is the detection result. The torque sensor 55 transmits the detected result to the controller 8, and the controller 8 compares the value with the expected value. When the detection is qualified, the display screen 81 displays green, and when the detection is unqualified, the display screen 81 displays red. When the device is abnormal, the display screen 81 displays yellow, prompting the worker to repair the device. The first slider 54 is moved up to the third positioning pin 56 to leave the auxiliary teeth 12, and the second slider 64 is reset to the first stop block 61 and the second stop block 62 away from the positioning fixture 4. The above is a complete test.

[0039] While the above test is in progress, the worker places another driven gear 1 to be tested on the positioning fixture 4 located at the loading position 32. When the above test is completed, the driven gear 1 located at the working position 31 is taken out, and the slide bar 72 is reset upward and leaves the insertion hole 75. The flat plate 33 is rotated to move the positioning fixture 4 located at the loading position 32 to the working position 31 (the movement of each component is as described above), and this cycle is repeated.

Claims

1. A torque detection device for detecting the torque of a driven gear of a balancing shaft, comprising a positioning tool and a rotating mechanism, Features: It also includes a deviation detection mechanism; the driven gear includes a main tooth and a secondary tooth that are coaxially arranged and can be elastically twisted with each other, the positioning tool is used to place the driven gear and position the main tooth, the rotating mechanism is used to drive the secondary tooth to rotate, and the rotating mechanism can move in a direction close to or away from the positioning tool, and a torque sensor is also provided on the rotating mechanism; the deviation detection mechanism is arranged on one side of the positioning tool to detect the angular deviation between the main tooth and the secondary tooth.

2. A torque detection device as claimed in claim 1, Features: The main tooth and the auxiliary tooth have a first through hole at the axis center, and the main tooth has a second through hole at the eccentric position; The positioning tool includes a cylinder, a first positioning pin and a second positioning pin. The cylinder is vertically arranged and the outer diameter of the cylinder is smaller than the outer diameter of the driven gear. The first positioning pin is vertically arranged at the axis of the cylinder and the outer diameter of the first positioning pin matches the inner diameter of the first through-hole. The height of the first positioning pin is greater than the height of the driven gear. The second positioning pin is arranged at a position on the cylinder corresponding to the second through-hole and the outer diameter of the second positioning pin matches the inner diameter of the second through-hole.

3. A torque detection device as claimed in claim 2, Features: The auxiliary tooth has a third through hole at an eccentric position, and the rotating mechanism includes a turntable arranged opposite to the cylinder, and the turntable can rotate along its own axis. A third locating pin is provided at a position corresponding to the third through hole on an end surface of the turntable facing the cylinder, and the outer diameter of the third locating pin matches the inner diameter of the third through hole.

4. A torque detection device as claimed in claim 3, Features: The rotating mechanism further comprises a motor for driving the turntable to rotate and a vertical driving assembly for driving the turntable to move vertically to approach or move away from the cylinder; The vertical drive assembly includes a first slide rail and a first slider slidably connected to the first slide rail, the first slide rail is vertically arranged, the motor is arranged at the upper end of the first slider and the driving shaft of the motor passes through the first slider downward, the torque sensor is arranged on the driving shaft, and the turntable is arranged at the lower end of the driving shaft.

5. A torque detection device as claimed in claim 4, Features: The deviation detection mechanism includes a first stop block, a second stop block and a second slide rail driving the first stop block and the second stop block to move, the second slide rail is horizontally arranged with one end facing the cylinder, the first stop block is slidably connected to the second slide rail and the first stop block corresponds to the height of the main tooth, the second stop block is arranged on the first stop block and can move along the length direction of the first stop block, the second stop block corresponds to the height of the auxiliary tooth, and a first elastic reset member is also arranged between the first stop block and the second stop block, and the first elastic reset member is located at the end of the first stop block away from the cylinder.

6. A torque detection device as claimed in claim 5, Features: It also includes a controller that is signal-connected to the motor, the first slide rail, the second slide rail, and the torque sensor. The controller is equipped with an indicator light that is used to indicate the detection result of the driven gear.

7. A torque detection device as claimed in claim 3, Features: It also includes a loading mechanism, which includes a horizontally arranged flat plate, which can rotate horizontally with its own axis as the center of the circle, the position on the flat plate opposite to the turntable is the working position, and the remaining positions are loading positions, and the positioning tooling has several and is respectively located at the working position and the loading position; a limiting component is provided between the flat plate and the positioning tooling so that the positioning tooling located at the working position can be limited to the working position.

8. A torque detection device as claimed in claim 7, Features: The positioning tooling, the rotating mechanism and the plate are all arranged on an operating platform and the lower end surface of the plate has a height difference with the operating platform. The limiting assembly includes a fixed block, a sliding rod and a second elastic reset member. Each of the cylinders is vertically penetrated with a through hole, and the through hole also vertically penetrates the plate downward. The sliding rod is vertically slidable in the through hole, and the second elastic reset member is arranged between the sliding rod and the through hole. When the second elastic reset member is naturally extended, the upper end of the sliding rod extends out of the cylinder, and when the second elastic reset member is compressed, the lower end of the sliding rod extends out of the plate. The fixed block is fixed on the operating platform at a position corresponding to the working position. The upper end of the fixed block is provided with a socket for inserting the sliding rod, and the fixed block is truncated cone-shaped.

9. A torque detection device as claimed in claim 8, Features: The cylinder is provided with a cavity at a position corresponding to the middle section of the through hole, the cavity is coaxial with the through hole and the inner diameter of the cavity is larger than the inner diameter of the through hole, the sliding plate is provided with a sliding piece at a position corresponding to the cavity of the sliding rod, the sliding piece is slidably connected with the cavity, and the second elastic return piece is sleeved on the outer periphery of the sliding rod and located between the sliding piece and the bottom wall of the cavity.

10. A torque detection device as claimed in claim 9, Features: The second elastic return member is a coil spring.

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