A clamping jig and an inspection apparatus

Abstract

This application relates to the field of electric scooter technology, disclosing a clamping fixture and a testing device. The clamping fixture includes a support base, a clamping assembly, and a transmission assembly. The clamping assembly includes a first gripper, a second gripper, and a third gripper. The transmission assembly is provided with a transmission mechanism, a first connection interface, and a second connection interface. The transmission mechanism is transmittedly connected to the first gripper, the second gripper, and the third gripper, respectively. The transmission mechanism drives the three grippers to move radially synchronously around the support base. The first connection interface is used to connect to an external operating handle, and the rotation of the operating handle drives the transmission mechanism. The second connection interface is used to fix the clamping fixture to a dynamometer. Through the above method, this application embodiment can adapt to different specifications of motor tires in electric scooter product lines, improving the adaptability of the testing equipment.

Description

Technical Field

[0001] This application relates to the field of electric scooter technology, and in particular to a clamping fixture and testing equipment. Background Technology

[0002] As an emerging personal mobility tool, electric scooters rely on a hub motor as their core drive component. The hub motor is directly integrated inside the wheel and uses electricity to power the vehicle's forward movement and braking. In the manufacturing process of electric scooters, the performance testing of the hub motor is a crucial step in ensuring product quality and safety. This requires precise measurement and verification of key parameters such as the motor's speed characteristics, torque output, and power efficiency using specialized testing equipment. To meet these testing requirements, dynamometers, as standard motor performance testing equipment, are widely used in production lines. However, the mechanical connection between the dynamometer and the motor under test relies on a specialized clamping fixture. The main function of this fixture is to securely fix hub motors of different specifications onto the dynamometer's spindle, ensuring a reliable transmission connection between the motor and the testing equipment during testing.

[0003] During the implementation of this application's embodiments, the inventors discovered that existing test fixtures generally suffer from structural defects due to insufficient adaptability. Traditional fixtures mostly employ fixed-size clamping structures, which can only adapt to motor products within a specific specification range. When faced with hub motors of different brands and models provided by customers, effective clamping is often impossible due to factors such as differences in wheel diameter, tire thickness, and hub shape. Utility Model Content

[0004] The main technical problem solved by the embodiments of this application is to provide a clamping fixture. By setting clamping components at equal angles along the circumference of the support base, it can adapt to different specifications of motor tires in the electric sliding product line, thereby improving the adaptability of the testing equipment.

[0005] To solve the above-mentioned technical problems, one technical solution adopted in this application embodiment is: providing a clamping fixture, including a support base, a clamping assembly, and a transmission assembly. The clamping assembly includes a first clamp, a second clamp, and a third clamp, which are arranged at equal angles along the circumference of the support base. The transmission assembly is disposed on the support base and includes a transmission mechanism, a first connection interface, and a second connection interface. The transmission mechanism is respectively connected to the first clamp, the second clamp, and the third clamp. The transmission mechanism is used to drive the three clamps to move radially synchronously with respect to the support base to accommodate motor tires of different diameters and achieve clamping and fixing. The first connection interface is used to connect to an external operating handle, and the rotation of the operating handle drives the transmission mechanism to work. The second connection interface is used to fix the clamping fixture to a dynamometer.

[0006] Optionally, the first gripper includes a first clamping portion and a first connecting arm, the first clamping portion being disposed at the end of the first connecting arm away from the support base, and the first connecting arm extending in a radial direction and slidably connected to the support base.

[0007] Optionally, the inner surface of the first clamping part is further provided with a first arc-shaped clamping surface.

[0008] Optionally, the first arc-shaped clamping surface is provided with a first anti-slip texture, the first anti-slip texture including a plurality of raised stripes and groove structures distributed along the first arc-shaped clamping surface.

[0009] Optionally, the first connecting arm is further provided with a plurality of first adjustment through holes, and the first gripper is further provided with a plurality of first threaded holes. The plurality of first adjustment through holes are distributed at intervals along the length direction of the first connecting arm. A first fixing member passes through the first adjustment through hole and is screwed into a first threaded hole. The first adjustment through hole is used to cooperate with the first fixing member to realize the segmented positioning and fixing of the first gripper in the radial direction.

[0010] Optionally, the support base is provided with a first guide groove, a second guide groove and a third guide groove, one end of the first gripper, the second gripper and the third gripper are respectively slidably engaged with the first guide groove, the second guide groove and the third guide groove, the first guide groove, the second guide groove and the third guide groove extend along the radial direction of the support base, and are used to guide the radial movement of the first gripper, the second gripper and the third gripper.

[0011] Optionally, the first connecting arm is further provided with a first guide rack extending in the radial direction. The guide rack includes a plurality of spaced-apart protruding teeth. The first guide rack is used to form a rack and pinion drive engagement with the first guide groove to realize the radial positioning movement of the first gripper.

[0012] Optionally, the first guide rack has an I-shaped cross-section, and the inner wall of the first guide groove is provided with an I-shaped channel that mates with the first guide rack. The first guide rack slides in conjunction with the I-shaped channel of the first guide groove.

[0013] Optionally, the transmission mechanism further includes a fixed disk and a transmission shaft. The fixed disk is disposed on the support base and fixedly connected to the support base, and the transmission shaft passes through the central hole of the fixed disk and forms a rotational engagement with the fixed disk.

[0014] To solve the above-mentioned technical problems, another technical solution adopted in the embodiments of this application is to provide a detection device.

[0015] This application provides a clamping assembly, including a support base, a clamping component, and a transmission component. The clamping component includes a first clamp, a second clamp, and a third clamp, which are arranged at equal angles along the circumference of the support base. The transmission component is disposed on the support base and includes a transmission mechanism, a first connection interface, and a second connection interface. The transmission mechanism is transmittedly connected to the first, second, and third clamps, respectively, and drives the three clamps to move radially synchronously around the support base to accommodate motor tires of different diameters. It achieves clamping and fixing. The first connection interface is used to connect to an external operating handle. The rotation of the operating handle drives the transmission mechanism to work. The second connection interface is used to fix the clamping fixture to the dynamometer. By setting the clamping components at equal angles along the circumference of the support base, it can adapt to motor tires of different specifications in the electric sliding product line, improving the adaptability of the testing equipment. The design principle of the transmission mechanism driving the three grippers to move radially synchronously enables a single clamping fixture to meet the testing needs of more than 95% of motors, fundamentally eliminating the technical obstacle of motors being unable to be put on the dynamometer due to specification mismatch. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the specific embodiments of this application or the prior art, the accompanying drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0017] Figure 1 This is a schematic diagram of the clamping fixture according to an embodiment of this application;

[0018] Figure 2 This is a schematic diagram of another clamping fixture according to an embodiment of this application;

[0019] Figure 3 This is a schematic diagram of the clamping fixture from another perspective according to an embodiment of this application;

[0020] Figure 4 This is another schematic diagram of the clamping fixture from another perspective of the embodiments of this application;

[0021] Figure 5 This is an exploded view of the clamping fixture according to an embodiment of this application.

[0022] The reference numerals in the detailed embodiments are as follows: 100, clamping fixture; 10, support base; 11, first guide groove; 20, clamping assembly; 21, first gripper; 201, first clamping part; 202, first connecting arm; 221, first adjusting through hole; 222, first guide rack; 223, raised tooth; 203, first arc-shaped clamping surface; 204, first anti-slip texture; 241, raised stripe; 242, groove structure; 22, second gripper; 23, third gripper; 24, first fixing member; 30, transmission assembly; 31, transmission mechanism; 32, first connecting interface; 33, second connecting interface; 34, fixing plate; 35, transmission shaft. Detailed Implementation

[0023] To facilitate understanding of this application, a more detailed description is provided below with reference to the accompanying drawings and specific embodiments. It should be noted that when an element is described as "fixed to" another element, it can be directly on the other element, or one or more intermediate elements may exist between them. When an element is described as "connected" to another element, it can be directly connected to the other element, or one or more intermediate elements may exist between them. The terms "upper," "lower," "inner," "outer," "vertical," "horizontal," etc., used in this specification indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0024] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the scope of the application. The term "and / or" as used in this specification includes any and all combinations of one or more of the associated listed items.

[0025] Furthermore, the technical features involved in the different embodiments of this application described below can be combined with each other as long as they do not conflict with each other.

[0026] Please see Figure 1 The clamping fixture 100 includes a support base 10, a clamping assembly 20, and a transmission assembly 30. The support base 10 adopts a disc-shaped structure design, providing a stable base platform for the entire clamping system.

[0027] Please see Figure 2 The clamping assembly 20 includes a first gripper 21, a second gripper 22, and a third gripper 23. The three grippers are evenly distributed along the circumference of the support base 10, ensuring uniform distribution of clamping force and automatic centering of the motor. The transmission assembly 30 is mounted on the support base 10 and includes a transmission mechanism 31, a first connection interface 32, and a second connection interface 33. The transmission mechanism 31 establishes transmission connections with the first gripper 21, the second gripper 22, and the third gripper 23, forming a unified control system. The first connection interface 32 is located at the operating end of the transmission assembly 30 and is used for standardized connection with an external operating handle. The second connection interface 33 is located at the output end of the transmission assembly 30 and is responsible for reliably mechanically connecting the entire clamping fixture 100 to the dynamometer spindle. The operator transmits rotational motion to the transmission mechanism 31 by rotating the operating handle connected to the first connection interface 32. Upon receiving the rotational input, the transmission mechanism 31 converts the rotational motion into linear driving force through its internal mechanical transmission system, simultaneously acting on the transmission connection points of the three grippers. Driven by the transmission mechanism 31, the first gripper 21, the second gripper 22, and the third gripper 23 move radially synchronously with reference to the geometric center of the support base 10. When the operating handle is rotated clockwise, the three grippers retract inward to clamp and fix the motor tire. When the operating handle is rotated counterclockwise, the three grippers open outward to facilitate the loading and unloading of the motor. This synchronous movement mechanism ensures a uniform distribution of force during clamping, avoiding the uneven force distribution that may occur with traditional separate adjustment methods.

[0028] In this embodiment, the clamping assembly 20 utilizes the angularly distributed design principle of its first clamp 21, second clamp 22, and third clamp 23 to effectively adapt to motor tires of different diameters. Compared to the fixed-size clamping structures in the prior art, this solution maintains good clamping performance over a wider size range, improving the equipment's versatility. The centralized control characteristics of the transmission mechanism 31 simplify the operation process; operators only need a single rotation operation to coordinate the adjustment of all clamps, significantly improving work efficiency. The synchronous radial movement ensures precise centered positioning of the motor tire under test in the clamping state, eliminating the impact of eccentricity errors on test accuracy. The design of the second connection interface 33 ensures good compatibility with different models of dynamometers, laying a technical foundation for the standardized application of the testing platform.

[0029] In practical use, the operator first places the motor tire to be tested within the central area enclosed by the first gripper 21, the second gripper 22, and the third gripper 23. The operator connects the operating handle via the first connection interface 32 and slowly rotates the handle to retract the three grippers inward until they make initial contact with the surface of the motor tire. The operator then continues to adjust the operating handle, increasing the clamping force to a suitable level to ensure the motor is securely fixed without damaging the tire. After clamping adjustment, the entire clamping fixture 100 is installed onto the dynamometer spindle via the second connection interface 33, ensuring a secure connection and coaxial accuracy. During testing, the self-locking characteristic of the transmission mechanism 31 maintains the stability of the gripper position, ensuring the accuracy and reproducibility of the test data. After testing, the operator reverses the rotation of the operating handle to open the grippers, facilitating the removal and replacement of the motor. This embodiment provides a versatile, easy-to-operate, and reliable clamping solution for testing electric scooter motors, effectively solving the technical problems of insufficient adaptability and complex operation in existing technologies.

[0030] For further details, please refer to Figure 3 The first gripper 21 adopts a split structure design, specifically including a first clamping part 201 and a first connecting arm 202. The first connecting arm 202 extends radially, with one end forming a sliding connection with the support base 10, and the other end connecting to the first clamping part 201. The split design rationally divides the transmission and clamping functions of the first gripper 21. The first connecting arm 202 mainly undertakes the transmission of transmission force and the guiding role of radial movement, while the first clamping part 201 is specifically responsible for direct contact and clamping fixation with the motor tire under test. The sliding connection mechanism between the first connecting arm 202 and the support base 10 ensures the stability and accuracy of the first gripper 21 during radial movement. The radial extension design of the first connecting arm 202 effectively expands the clamping range, enabling it to adapt to a larger range of motor size variations. The first clamping part 2012 is located at the end of the first connecting arm 202 away from the support base 10. This configuration not only expands the working space of the clamping fixture 100 but also facilitates the effective clamping of motor tires of different heights and shapes.

[0031] For further information, please refer to [link / reference]. Figure 2The inner surface of the first clamping part 201 is further provided with a first arc-shaped clamping surface 203. The first arc-shaped clamping surface 203 is designed so that its radius of curvature matches the outer circumference of a common motor tire, forming an ideal surface contact fit. Compared to traditional planar or line contact methods, the first arc-shaped clamping surface 203 can provide a larger contact area and a more uniform pressure distribution. The first arc-shaped clamping surface 203 enables good fit when clamping tires of different diameters. This design not only improves the efficiency of clamping force transmission but also reduces contact stress concentration, effectively preventing damage to the tire surface. The adaptive characteristics of the arc-shaped structure allow the clamping fixture 100 to automatically compensate for minor differences in tire shape, further improving versatility and reliability.

[0032] For details, please refer to Figure 4 The first arc-shaped clamping surface 203 is provided with a first anti-slip texture 204. The first anti-slip texture 204 includes a plurality of raised stripes 241 and groove structures 242 distributed along the first arc-shaped clamping surface 203. The raised stripes 241 and groove structures 242 are arranged alternately to form a contact surface with good frictional properties. The raised stripes 241 ensure effective mechanical engagement with the surface of the motor tire under different clamping forces. The groove structures 242 not only increase the surface roughness but also provide a channel for the removal of any lubricant or impurities, ensuring that the contact surface always maintains the optimal frictional state.

[0033] To ensure the overall balance and consistent performance of the clamping fixture 100, the second gripper 22 and the third gripper 23 adopt the same structural design as the first gripper 21. The second gripper 22 includes a second clamping part and a second connecting arm, and the third gripper 23 includes a third clamping part and a third connecting arm. The three grippers are distributed at equal angles on the support base 10, ensuring uniform distribution of clamping force and precise centering of the motor. The inner surface of the second clamping part is provided with a second arc-shaped clamping surface of the same specifications as the first arc-shaped clamping surface 203, and the inner surface of the third clamping part is provided with a third arc-shaped clamping surface. Correspondingly, the second arc-shaped clamping surface is provided with a second anti-slip texture, and the third arc-shaped clamping surface is provided with a third anti-slip texture. The geometric parameters, distribution density, and surface treatment process of all anti-slip textures are kept consistent to ensure that the three grippers have the same frictional characteristics and anti-slip performance.

[0034] Please see Figure 2The clamping assembly 20 further includes multiple first fixing members 24, and the first connecting arm 202 is also provided with multiple first adjusting through holes 221. The first gripper 21 is also provided with multiple first threaded holes (not shown). The multiple first adjusting through holes 221 are spaced apart along the length direction of the first connecting arm 202. A first fixing member 24 passes through the first adjusting through hole 221 and is screwed into a first threaded hole. The first adjusting through hole 221 is used to cooperate with the first fixing member 24 to realize the segmented positioning and fixing of the first gripper 21 in the radial direction, forming a complete adjustment and positioning system. The spacing design of the first adjusting through holes 221 is based on the statistical analysis of the size of motor tires of different specifications. The spacing of the first adjusting through holes 221 corresponds to the size differences of common motor specifications, ensuring good adaptation coverage. The operator can select the appropriate adjustment through hole according to the specific specifications of the motor under test. By screwing the first fixing member 24 into the selected first adjustment through hole 221, the gripper is precisely preset positioned in the radial direction. The first fixing member 24 adopts a standard thread structure, which can form a reliable screw connection with the first threaded hole. The design of the first fixing member 24 fully considers the balance between operational convenience and fixing strength, ensuring sufficient clamping force transmission capacity while facilitating quick adjustment and position setting by the operator. To ensure the complete consistency of the functions of the three grippers and the overall balance of the system, the second gripper 22 and the third gripper 23 adopt the same adjustable positioning system configuration as the first gripper 21. The second connecting arm is provided with multiple second adjustment through holes, and the third connecting arm is provided with multiple third adjustment through holes. The number, spacing, diameter, and depth parameters of all adjustment through holes are kept consistent to ensure that the three grippers have the same adjustment capability and positioning accuracy.

[0035] The clamping assembly 20 is equipped with multiple second fasteners (not shown) and multiple third fasteners (not shown), whose specifications and technical parameters are exactly the same as those of the first fastener 24. The second fasteners pass through the second adjustment through-hole and are screwed into the second threaded hole of the second jaw, and the third fasteners pass through the third adjustment through-hole and are screwed into the third threaded hole of the third jaw. The synchronous configuration of the three fastening systems ensures that the clamping fixture 100 maintains the coordination and consistency of the three jaws in any adjustment position.

[0036] In this embodiment, this segmented positioning mechanism allows operators to adjust the clamping assembly 20 to the most suitable initial position before starting testing, significantly reducing the workload of subsequent fine-tuning. When it is necessary to replace the motor with one of different specifications, it is only necessary to reselect the appropriate adjustment through-hole position and adjust the fastener configuration to quickly complete the reset of the clamping fixture 100, greatly improving the efficiency of equipment use.

[0037] This embodiment combines basic clamping functionality with precise positioning capabilities, forming a complete and reliable technical solution. The symmetrical configuration of the three grippers ensures the balance and consistency of the adjustment system, avoiding overall performance deviations caused by improper adjustment of a single gripper. The coordinated operation of the adjustable positioning system and the original transmission mechanism 31 ensures the stable performance of the clamping fixture 100 under various working conditions.

[0038] Please see Figure 5 The support base 10 is provided with a first guide groove 11, a second guide groove (not shown), and a third guide groove (not shown). These three guide grooves extend radially along the support base 10 and correspond to the distribution positions of the three grippers. One end of the first gripper 21, the second gripper 22, and the third gripper 23 slides into the first guide groove 11, the second guide groove, and the third guide groove, respectively. The first guide groove 11, the second guide groove, and the third guide groove extend radially along the support base 10 to guide the radial movement of the first gripper 21, the second gripper 22, and the third gripper 23. The radial extension design of the three guide grooves provides precise trajectory constraints for the movement of the three grippers, ensuring that the three grippers can move accurately radially along a predetermined path under the drive of the transmission mechanism 31.

[0039] For further details, please refer to Figure 5 The first connecting arm 202 is further provided with a first guide rack 222 extending radially. The guide rack includes multiple spaced-apart protruding teeth 223, forming a regular rack and pinion transmission structure. The first guide rack 222 is used to form a rack and pinion transmission engagement with the first guide groove 11 to realize the radial positioning movement of the first gripper 21. The cross-section of the first guide rack 222 adopts an I-shaped design, which provides excellent structural performance. The I-shaped cross-section has a large section modulus and bending stiffness, and can withstand greater loads while maintaining structural stability. At the same time, the symmetry of the I-shape ensures uniform stress distribution of the rack during the stress process, avoiding stress concentration. The inner wall of the first guide groove 11 is provided with an I-shaped channel that engages with the first guide rack 222. The geometry of the I-shaped channel precisely matches the I-shaped cross-section of the guide rack, forming a high-precision sliding fit relationship.

[0040] To ensure the overall system's balance and consistency, the second gripper 22 and the third gripper 23 employ the same guide rack configuration. The second connecting arm and the third connecting arm are respectively equipped with a second guide rack and a third guide rack, whose structural parameters and I-shaped cross-section design are completely identical to the first guide rack 222. Correspondingly, the I-shaped channels on the inner walls of the second guide groove 12 and the third guide groove 13 form a precise fit with their respective guide racks.

[0041] The synchronized configuration of the three guiding systems ensures the coordinated movement of the three grippers. The synchronous characteristics of the rack and pinion drive eliminate any potential movement differences between the grippers, achieving synchronized radial movement.

[0042] In this embodiment, the implementation of the guiding system significantly improves the motion accuracy of the clamping fixture 100. The fit between the guide groove and the guide rack reaches a precision level, and the radial positioning accuracy of the grippers is controlled below millimeters. The high rigidity of the I-beam fit structure ensures the stability of the system under various working conditions, effectively suppressing the impact of vibration and deformation on accuracy. The application of the rack and pinion transmission mechanism makes the gripper position control more precise and predictable. The operator can precisely adjust the gripper position by controlling the rotation angle of the transmission mechanism 31, realizing quantitative management of position control.

[0043] Please continue reading. Figure 5 The transmission mechanism 31 further includes a fixed disk 34 and a transmission shaft 35. The fixed disk 34 is located at the center of the support base 10 and is fixedly connected to the support base 10. The fixed disk 34 is made of high-strength alloy material, possessing excellent mechanical properties and dimensional stability. The fixed disk 34 achieves reliable fixing through bolt connection or interference fit. A precision-machined center hole is located at the center of the fixed disk 34. The inner diameter of this center hole forms a standard rotational fit with the outer diameter of the transmission shaft 35. The transmission shaft 35 passes through the center hole of the fixed disk 34 and forms a rotational fit with the fixed disk 34, ensuring smooth rotation and accurate transmission. High-precision bearings or bushings can be configured between the transmission shaft 35 and the fixed disk 34 to further improve rotational performance and extend service life.

[0044] This application provides a clamping assembly 20, including a support base 10, a clamping assembly 20, and a transmission assembly 30. The clamping assembly 20 includes a first gripper 21, a second gripper 22, and a third gripper 23. The first gripper 21, the second gripper 22, and the third gripper 23 are arranged at equal angles along the circumference of the support base 10. The transmission assembly 30 is disposed on the support base 10 and includes a transmission mechanism 31, a first connection interface 32, and a second connection interface 33. The transmission mechanism 31 is transmittedly connected to the first gripper 21, the second gripper 22, and the third gripper 23, respectively, and is used to drive the three grippers to synchronously move radially around the support base 10. The device is designed to move to accommodate motor tires of different diameters and achieve clamping and fixing. The first connection interface 32 is used to connect to an external operating handle. The rotation of the operating handle drives the transmission mechanism 31 to work. The second connection interface 33 is used to fix the clamping fixture 100 to the dynamometer. By setting the clamping components 20 at equal angles along the circumference of the support base 10, it can adapt to motor tires of different specifications in the electric sliding product line, thus improving the adaptability of the testing equipment. The design principle of the transmission mechanism 31 driving the three grippers to move radially synchronously enables a single clamping fixture 100 to meet the testing requirements of more than 95% of motors, fundamentally eliminating the technical obstacle of motors being unable to be put on the dynamometer due to specification mismatch.

[0045] This application also provides an embodiment of a testing device, which includes the clamping fixture 100 described above. For the specific structure and function of the testing device, please refer to the above embodiments, which will not be repeated here.

[0046] The above description is merely an embodiment of this application and does not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. A clamp jig characterized by comprising: include: Support base; The clamping assembly includes a first clamp, a second clamp, and a third clamp, wherein the first clamp, the second clamp, and the third clamp are arranged at equal angles along the circumferential direction of the support base; A transmission assembly is disposed on the support base. The transmission assembly is provided with a transmission mechanism, a first connection interface, and a second connection interface. The transmission mechanism is respectively connected to the first gripper, the second gripper, and the third gripper. The transmission mechanism is used to drive the three grippers to move radially synchronously with respect to the support base to accommodate motor tires of different diameters and achieve clamping and fixing. The first connection interface is used to connect to an external operating handle. The transmission mechanism is driven to work by rotating the operating handle. The second connection interface is used to fix the clamping fixture to the dynamometer.

2. The clamping fixture according to claim 1, characterized in that, The first gripper includes a first clamping portion and a first connecting arm. The first clamping portion is disposed at the end of the first connecting arm away from the support base. The first connecting arm extends in a radial direction and is slidably connected to the support base.

3. The clamping fixture according to claim 2, characterized in that, The inner surface of the first clamping part is also provided with a first arc-shaped clamping surface.

4. The clamping fixture according to claim 3, characterized in that, The first arc-shaped clamping surface is provided with a first anti-slip texture, which includes a plurality of raised stripes and groove structures distributed along the first arc-shaped clamping surface.

5. The clamping fixture according to claim 2, characterized in that, The clamping assembly also includes a plurality of first fixing members. The first connecting arm is also provided with a plurality of first adjustment through holes, and the first gripper is also provided with a plurality of first threaded holes. The plurality of first adjustment through holes are distributed at intervals along the length direction of the first connecting arm. A first fixing member passes through the first adjustment through hole and is screwed into a first threaded hole. The first adjustment through hole is used to cooperate with the first fixing member to realize the segmented positioning and fixing of the first gripper in the radial direction.

6. The clamping fixture according to claim 2, characterized in that, The support base is provided with a first guide groove, a second guide groove and a third guide groove. One end of the first gripper, the second gripper and the third gripper are respectively slidably engaged with the first guide groove, the second guide groove and the third guide groove. The first guide groove, the second guide groove and the third guide groove extend along the radial direction of the support base to guide the radial movement of the first gripper, the second gripper and the third gripper.

7. The clamping fixture according to claim 2, characterized in that, The first connecting arm is further provided with a first guide rack extending in the radial direction. The guide rack includes a plurality of spaced-apart protruding teeth. The first guide rack is used to form a rack and pinion drive engagement with the first guide groove to realize the radial positioning movement of the first gripper.

8. The clamping fixture according to claim 7, characterized in that, The first guide rack has an I-shaped cross section, and the inner wall of the first guide groove is provided with an I-shaped channel that mates with the first guide rack. The first guide rack slides in conjunction with the I-shaped channel of the first guide groove.

9. The clamping fixture according to claim 1, characterized in that, The transmission mechanism also includes a fixed disk and a transmission shaft. The fixed disk is disposed on the support base and fixedly connected to the support base. The transmission shaft passes through the central hole of the fixed disk and forms a rotational engagement with the fixed disk.

10. A detection device, characterized by Includes the clamping fixture as described in any one of claims 1-9.

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