Clamping mechanism for assisting in torque detection of product shaft and detection device

Abstract

The invention discloses a clamping mechanism and a detection device for assisting in torque detection of a product shaft, and relates to the technical field of torque detection, the clamping mechanism comprises a main body and a clamping jaw, and one side of the main body extends to form a clamping part; the clamping jaw is rotatably installed on the main body and can rotate between an initial position and a clamping position relative to the main body, a containing space is formed between the clamping jaw and the clamping part when the clamping jaw is located at the initial position, the clamping end of a product shaft can stretch into the containing space in the axial direction of the product shaft, and the clamping jaw is matched with the clamping part to clamp the clamping end stretching into the containing space when the clamping jaw is located at the clamping position. And the product shaft is fixed on the clamping mechanism. According to the technical scheme, the clamping jaw and the main body are rotatably mounted, so that the product shaft is clamped, the fixing process of the product shaft is greatly simplified, the clamping speed is increased, and the detection efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of torque detection, and particularly to a clamping mechanism and a detection device for assisting in torque detection of a product shaft. Background Art

[0002] Torque detection of a product to be tested, such as a motor, is a key performance detection link before its factory shipment. It can effectively evaluate the actual output ability of the motor, ensuring that it meets the design specifications and application requirements. Torque detection can not only verify key parameters such as the rated torque and peak torque of the motor, but also detect the running stability and efficiency of the motor under different load conditions, avoiding the influence of insufficient torque or excessive fluctuations on the performance of the final product. In addition, potential manufacturing defects, such as winding faults, magnetic circuit abnormalities or bearing losses, can be detected through torque detection, thereby improving product consistency and reliability, and ensuring the long-term stable operation of the motor in actual applications.

[0003] However, in the prior art, when detecting the torque of a motor, it is usually necessary to sleeved a copper sleeve on the product shaft of the motor and fasten the copper sleeve to the product shaft or glue it firmly, resulting in a destructive test. It is impossible to detect each product, and only sampling inspection can be carried out. Moreover, the fixing process of the copper sleeve is cumbersome, resulting in a long process for torque detection of the motor and low detection efficiency. Summary of the Invention

[0004] The main object of the present invention is to propose a clamping mechanism and a detection device for assisting in torque detection of a product shaft, aiming to solve the problems of complicated fixing process of the product shaft and low detection efficiency in the prior art.

[0005] To achieve the above object, the clamping mechanism for assisting in torque detection of a product shaft according to the present invention, one end of the product shaft is a clamping end, and the clamping mechanism includes:

[0006] A main body, a clamping portion extends from one side of the main body;

[0007] A clamping jaw, the clamping jaw is rotatably mounted on the main body and can rotate relative to the main body between an initial position and a clamping position. When the clamping jaw is in the initial position, a placement space is formed between the clamping jaw and the clamping portion. The clamping end of the product shaft can axially extend into the placement space. When the clamping jaw is in the clamping position, it cooperates with the clamping portion to clamp the clamping end extending into the placement space, so as to fix the product shaft on the clamping mechanism.

[0008] In one embodiment, the clamping part includes a first clamping section and a first hinge section, and the jaw includes a second clamping section and a second hinge section; the first hinge section and the second hinge section are respectively provided with a first through hole and a second through hole along a first direction, and the clamping mechanism further includes a hinge shaft that passes through the first through hole and the second through hole to hinge the first hinge section and the second hinge section; the first clamping section is connected to one end of the first hinge section away from the hinge shaft, the second clamping section is connected to one end of the second hinge section away from the hinge shaft, and the first clamping section can cooperate with the second clamping section to clamp the clamping end extending into the placement space when the jaw is in the clamping position.

[0009] In one embodiment, a first clamping wall is formed on one side of the first clamping section facing the placement space, and a first clamping groove is formed by the first clamping wall recessing in a direction away from the placement space; a second clamping wall is formed on one side of the second clamping section facing the placement space, and a second clamping groove is formed by the second clamping wall recessing in a direction away from the placement space; when the jaw is in the clamping position, the first clamping groove and the second clamping groove enclose a clamping cavity for clamping the clamping end.

[0010] In one embodiment, both the first clamping groove and the second clamping groove are arranged in a polygonal prism shape, and each groove wall of the first clamping groove and the second clamping groove abuts against the product axis.

[0011] In one embodiment, both the first clamping groove and the second clamping groove are arranged in a triangular prism shape and each includes two groove walls arranged at an angle, and the two groove walls of the first clamping groove and the two groove walls of the second clamping groove both abut against the product axis.

[0012] In one embodiment, the first hinge section includes two hinge blocks arranged at intervals along the first direction, the first through holes are formed in both of the two hinge blocks, a hinge space is formed between the two hinge blocks, the second hinge section extends into the hinge space, and the hinge shaft sequentially passes through one of the first through holes, the second through hole and the other first through hole to hinge the first hinge section and the second hinge section.

[0013] In one embodiment, the width of the hinge block in the second direction is greater than the width of the first clamping section in the second direction, and the width of the second hinge section in the second direction is greater than the width of the second clamping section in the second direction, where the first direction is perpendicular to the second direction; when the jaw is in the clamping position, the two sides of the hinge block in the second direction are flush with the two sides of the second hinge section in the second direction, and one side of the first clamping section facing away from the second clamping section and one side of the second clamping section facing away from the first clamping section are respectively flush with the two sides of the hinge block in the second direction.

[0014] In one embodiment, the clamping portion further includes a first transition section, and the first clamping section is connected to one end of the first hinge section away from the hinge axis through the first transition section; the jaw further includes a second transition section, and the second clamping section is connected to one end of the second hinge section away from the hinge axis through the second transition section; a first locking hole and a second locking hole are respectively formed in the first transition section and the second transition section along a direction perpendicular to the first direction, and the clamping mechanism further includes a locking member, and the locking member is used to pass through the first locking hole and the second locking hole to lock the clamping portion and the jaw.

[0015] In one embodiment, the locking member is a screw, and the first locking hole and / or the second locking hole is a screw hole that is in threaded fit with the screw.

[0016] The present invention also provides a detection device for detecting the torque of a product to be tested. The detection device uses the above-mentioned clamping mechanism for assisting the product shaft of the product to be tested to perform torque detection, and the clamping mechanism is used to clamp and fix the product shaft of the product to be tested.

[0017] The technical solution of the present invention uses the clamping mechanism to assist the product shaft of the product to be tested to perform torque detection. The jaw and the main body are rotatably installed, so that the jaw can form a placement space with the main body in the initial position, enabling the product shaft to directly extend into the placement space. After the product shaft extends into the placement space, the jaw is rotated to the clamping position to clamp the product shaft in cooperation with the main body. When fixing the product shaft, only the jaw needs to be rotated, which simplifies the fixing process of the product shaft, improves the clamping speed, and thus improves the detection efficiency. At the same time, the clamping of the present invention does not need to fix the product shaft through glue or a copper sleeve, and will not damage the product shaft. Therefore, each product to be tested can be detected, improving the yield rate of the products to be tested when leaving the factory. Moreover, the jaw can rotate relative to the main body between the initial position and the clamping position, so that the placement space is adjustable. Through the design of the adjustable placement space, the clamping mechanism of the present invention can be adapted to product shafts of different sizes, without separately designing a clamping mechanism for each type of product shaft, reducing the design cost and design cycle. Description of the Drawings

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on the structures shown in these drawings.

[0019] Figure 1 Structural schematic diagram of the clamping mechanism provided by an embodiment of the present invention;

[0020] Figure 2 Partial structural schematic diagram of the clamping mechanism provided by an embodiment of the present invention;

[0021] Figure 3 Structural schematic diagram of the clamping jaw of the clamping mechanism provided by an embodiment of the present invention in the clamping position;

[0022] Figure 4 Structural schematic diagram of the clamping jaw of the clamping mechanism provided by an embodiment of the present invention in the initial position;

[0023] Figure 5 Bottom view structural schematic diagram of the clamping mechanism provided by another embodiment of the present invention.

[0024] Explanation of the reference numerals in the drawings:

[0025] 100, clamping mechanism; 1, main body; 11, clamping part; 111, first clamping section; 112, first hinge section; 113, first through hole; 114, first clamping groove; 115, hinge block; 116, hinge space; 117, first transition section; 118, first locking hole; 119, first clamping wall; 2, clamping jaw; 21, second clamping section; 22, second hinge section; 23, second through hole; 24, second clamping groove; 25, second transition section; 251, second locking hole; 26, second clamping wall; 3, placement space; 4, hinge shaft; 5, locking member; 200, motor; 6, product shaft; 61, clamping end.

[0026] The realization of the object, functional features and advantages of the present invention will be further described with reference to the embodiments and the drawings. Detailed embodiments

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0028] It should be noted that if there are directional indications involved in the embodiments of the present invention (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative positional relationship, movement conditions, etc. between components in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0029] In addition, if there are descriptions such as "first" and "second" in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, if "and / or" or "and / or" appears throughout the text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or a solution where A and B are satisfied simultaneously. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0030] In the prior art, when performing torque detection on a motor, it is usually necessary to sleeved a copper sleeve on the product shaft of the motor and fasten the copper sleeve to the product shaft or glue it firmly, forming a destructive test. It is impossible to detect each product, and only sampling can be carried out. Moreover, the fixing process of the copper sleeve is cumbersome, resulting in a long process for torque detection of the motor and low detection efficiency.

[0031] To solve the above problems, the present invention proposes a clamping mechanism 100 for assisting the torque detection of the product shaft 6.

[0032] Please refer to Figure 1 , Figure 3 and Figure 4 . For the clamping mechanism 100 for assisting the torque detection of the product shaft 6 in this embodiment, one end of the product shaft 6 is a clamping end 61. The clamping mechanism 100 includes a main body 1 and a clamping jaw 2. A clamping portion 11 extends from one side of the main body 1; the clamping jaw 2 is rotatably installed on the main body 1 and can rotate relative to the main body 1 between an initial position and a clamping position. When the clamping jaw 2 is in the initial position, a placement space 3 is formed between the clamping jaw 2 and the clamping portion 11. The clamping end 61 of the product shaft 6 can extend axially into the placement space 3. When the clamping jaw 2 is in the clamping position, it cooperates with the clamping portion 11 to clamp the clamping end 61 extending into the placement space 3, so as to fix the product shaft 6 on the clamping mechanism 100.

[0033] When torque detection needs to be performed on a product to be tested, such as a motor 200, the technical solution of the present invention uses a clamping mechanism 100 to assist in torque detection of the product shaft 6 of the product to be tested. The jaw 2 and the main body 1 are arranged to be rotatably installed, so that the jaw 2 can form a placement space 3 with the main body 1 in the initial position, enabling the product shaft 6 to directly extend into the placement space 3. After the product shaft 6 extends into the placement space 3, the jaw 2 is rotated to the clamping position to cooperate with the main body 1 to clamp the product shaft 6. When fixing the product shaft 6, only the jaw 2 needs to be rotated, which simplifies the fixing process of the product shaft 6, improves the clamping speed, and thus improves the detection efficiency. At the same time, the clamping of the present invention does not need to be fixed to the product shaft 6 through glue or a copper sleeve, and will not damage the product shaft 6. Therefore, each product to be tested can be detected, improving the yield rate of the products to be tested at the factory. Moreover, the jaw 2 can rotate relative to the main body 1 between the initial position and the clamping position, so that the placement space 3 is adjustable. Through the adjustable design of the placement space 3, the clamping mechanism 100 of the present invention can be adapted to product shafts 6 of different sizes, without separately designing a clamping mechanism 100 for each type of product shaft 6, reducing the design cost and design cycle.

[0034] Understandably, when performing torque detection on the motor 200, first extend the clamping end 61 of the product shaft 6 into the placement space 3, then rotate the jaw 2 to the clamping position to clamp the product shaft 6. At this time, start the motor 200, the rotation of the product shaft 6 drives the clamping mechanism 100 to rotate, and then the torque of the motor is measured by a torque testing device provided on the clamping mechanism 100, such as a torque sensor.

[0035] Please combine Figure 1 and Figure 2 , in an embodiment, the clamping portion 11 includes a first clamping section 111 and a first hinged section 112, and the jaw 2 includes a second clamping section 21 and a second hinged section 22; first through holes 113 and second through holes 23 are respectively formed in the first hinged section 112 and the second hinged section 22 along a first direction. The clamping mechanism 100 further includes a hinge shaft 4, and the hinge shaft 4 passes through the first through hole 113 and the second through hole 23 to hinge the first hinged section 112 and the second hinged section 22. The first clamping section 111 is connected to one end of the first hinged section 112 away from the hinge shaft 4, and the second clamping section 21 is connected to one end of the second hinged section 22 away from the hinge shaft 4. The first clamping section 111 can cooperate with the second clamping section 21 to clamp the clamping end 61 extending into the placement space 3 when the jaw 2 is in the clamping position.

[0036] Connecting the first articulated segment 112 and the second articulated segment 22 through the hinge shaft 4 can ensure a stable movement trajectory when the jaw 2 rotates, reduce the clamping error caused by excessive degrees of freedom, and improve the clamping stability of the clamping mechanism 100; while the first clamping segment 111 and the second clamping segment 21 are respectively located at the ends of the first articulated segment 112 and the second articulated segment 22 away from the hinge shaft 4, which can extend the force arm at the clamping position, thereby providing a stronger and more stable support for the product shaft 6 and improving the clamping stability of the product shaft 6.

[0037] Please refer to Figure 5 , in an embodiment, the first clamping segment 111 forms a first clamping wall 119 on the side facing the placement space 3, and the first clamping wall 119 is recessed in the direction away from the placement space 3 to form a first clamping groove 114; the second clamping segment 21 forms a second clamping wall 26 on the side facing the placement space 3, and the second clamping wall 26 is recessed in the direction away from the placement space 3 to form a second clamping groove 24; when the jaw 2 is in the clamping position, the first clamping groove 114 and the second clamping groove 24 enclose a clamping cavity for clamping the clamping end 61.

[0038] By the mutual cooperation of the first clamping groove 114 and the second clamping groove 24 to form the clamping cavity, the clamping end 61 of the product shaft 6 can be more tightly wrapped, avoiding axial or radial sliding caused by insufficient clamping force, improving the stability of the product shaft 6. The clamping groove structure can provide a larger contact area, evenly distribute the clamping force, reduce damage to the product shaft 6, and at the same time enhance the clamping effect.

[0039] Furthermore, both the first clamping groove 114 and the second clamping groove 24 are arranged in a polygonal prism shape, and each groove wall of the first clamping groove 114 and the second clamping groove 24 abuts against the product shaft 6.

[0040] Using the polygonal prism-shaped clamping groove, multiple contact surfaces are formed inside the clamping cavity, which can more firmly fix the product shaft 6, avoid slipping during the torque detection process due to insufficient clamping force, and improve the accuracy of the detection data. At the same time, since the groove walls of the polygonal prism-shaped clamping groove can play a guiding role for the clamping end 61, it can automatically align the axis during clamping, reducing the need for manual adjustment, making the product shaft 6 easier to insert and be accurately clamped, and improving the convenience and efficiency of the detection.

[0041] It should be noted that since the product shaft 6 is usually cylindrical, the clamping groove can be set as half of a regular polygonal prism, that is, the regular polygonal prism is cut from its midline, so that each groove wall surface of the clamping groove can be tangent to and in contact with the product shaft 6, thereby increasing the contact area between the clamping groove and the product shaft 6.

[0042] Specifically, both the first clamping groove 114 and the second clamping groove 24 are arranged in a triangular prism shape, and both include two groove walls arranged at an angle. The two groove walls of the first clamping groove 114 and the two groove walls of the second clamping groove 24 are both in contact with the product shaft 6.

[0043] Traditional multi-prismatic clamping grooves may require complex processing techniques, while the triangular prism structure is relatively simple and has a lower manufacturing cost. At the same time, it can still provide good clamping performance, taking into account both economy and functionality.

[0044] Please refer to Figure 1 and Figure 2 , in an embodiment, the first hinge segment 112 includes two hinge blocks 115 arranged at intervals along the first direction. First through holes 113 are formed in both of the two hinge blocks 115. The two hinge blocks 115 directly enclose a hinge space 116. The second hinge segment 22 extends into the hinge space 116. The hinge shaft 4 sequentially passes through one of the first through holes 113, the second through hole 23, and the other first through hole 113 to hinge the first hinge segment 112 and the second hinge segment 22.

[0045] By arranging the two hinge blocks 115 of the first hinge segment 112 at intervals to form the middle hinge space 116, enabling the second hinge segment 22 to be embedded therein, compared with the single-sided hinge method, the structure is more compact, and the contact area is increased. Compared with the single-point or single-sided hinge method, it can effectively prevent the jaw 2 from shaking due to uneven force during torque detection, improving the stability of clamping.

[0046] In an embodiment, the width of the hinge block 115 along the second direction is greater than the width of the first clamping segment 111 along the second direction, and the width of the second hinge segment 22 along the second direction is greater than the width of the second clamping segment 21 along the second direction. The first direction is perpendicular to the second direction. When the jaw 2 is in the clamping position, the two sides of the hinge block 115 along the second direction are flush with the two sides of the second hinge segment 22 along the second direction, and the side of the first clamping segment 111 facing away from the second clamping segment 21 and the side of the second clamping segment 21 facing away from the first clamping segment 111 are respectively flush with the two sides of the hinge block 115 along the second direction.

[0047] Increasing the widths of the hinge block 115 and the second hinge segment 22 can increase their contact area, thereby improving the hinge stability between the first hinge segment 112 and the second hinge segment 22. At the same time, the two sides of the hinge block 115 along the second direction are flush with the two sides of the second hinge segment 22 along the second direction, and the side of the first clamping segment 111 facing away from the second clamping segment 21 and the side of the second clamping segment 21 facing away from the first clamping segment 111 are respectively flush with the two sides of the hinge block 115 along the second direction, making the structure of the clamping mechanism 100 more compact and smaller in volume in the second direction.

[0048] In one embodiment, the clamping portion 11 further includes a first transition section 117. The first clamping section 111 is connected to one end of the first hinge section 112 away from the hinge axis 4 through the first transition section 117. The jaw 2 further includes a second transition section 25. The second clamping section 21 is connected to one end of the second hinge section 22 away from the hinge axis 4 through the second transition section 25. A first locking hole 118 and a second locking hole 251 are respectively formed in the first transition section 117 and the second transition section 25 along a direction perpendicular to the first direction. The clamping mechanism 100 further includes a locking member 5. The locking member 5 is used to pass through the first locking hole 118 and the second locking hole 251 to lock the clamping portion 11 and the jaw 2.

[0049] By respectively adding the first transition section 117 and the second transition section 25 to the clamping portion 11 and the jaw 2, and forming the first locking hole 118 and the second locking hole 251 thereon, the first transition section 117 and the second transition section 25 are connected and locked through the cooperation of the locking member 5 with the first locking hole 118 and the second locking hole 251, providing additional support points, making the connection between the clamping portion 11 and the jaw 2 tighter, improving the clamping degree of the clamping portion 11 and the jaw 2 on the product shaft 6, avoiding slippage of the product shaft 6 during the detection of torque, and improving the stability of torque detection.

[0050] In one embodiment, the locking member 5 is a screw, and the first locking hole 118 and / or the second locking hole 251 is a threaded hole that is threadedly engaged with the screw.

[0051] It can be understood that when the first locking hole 118 or the second locking hole 251 is a threaded hole and the other is not, the locking member 5 needs to penetrate from the side that is not a threaded hole and then penetrate out from the side that is a threaded hole. Threaded connection can provide higher axial pre-tightening force, keep the clamping end 61 stable during high-torque detection, prevent relative slippage or loosening of the clamping portion 11, thereby improving the detection accuracy and repeatability. And because of the threaded connection, the user can quickly adjust the tightening degree of the clamping mechanism 100 by tightening or loosening the screw, adapt to product shafts 6 of different specifications, and there is no need to replace the entire clamping mechanism, improving the flexibility of use.

[0052] The present invention also proposes a detection device for detecting the torque of a workpiece to be measured. The detection device applies the clamping mechanism 100 for torque detection of an auxiliary product shaft as described above. The clamping mechanism 100 is used to clamp and fix the product shaft 6 of the product to be measured.

[0053] The detection device is applied with a clamping mechanism 100. When detecting the torque of the motor 200, first insert the clamping end 61 of the product shaft 6 into the placement space 3, then rotate the clamping jaw 2 to the clamping position to clamp the product shaft 6. At this time, start the motor 200. The rotation of the product shaft 6 drives the clamping mechanism 100 to rotate, and then the torque of the motor 200 is measured by a testing device, such as a torque sensor, provided on the clamping mechanism 100.

[0054] For the specific structure of the clamping mechanism 100, refer to the above embodiments. Since this detection device adopts all the technical solutions of the above embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be elaborated here one by one.

[0055] The above are only optional embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent structural transformation made under the concept of the present invention by using the content of the specification and drawings of the present invention, or directly / indirectly applied in other related technical fields, is included in the patent protection scope of the present invention.

Claims

1. A clamping mechanism for assisting in torque detection of a product shaft, characterized in that, One end of the product shaft is a clamping end, and the clamping mechanism includes: A main body, with a clamping portion extending from one side of the main body; Jaw claws, which are rotatably mounted on the main body and can rotate relative to the main body between an initial position and a clamping position. When the jaw claws are in the initial position, a placement space is formed between the jaw claws and the clamping portion. The clamping end of the product shaft can extend axially into the placement space. When the jaw claws are in the clamping position, they cooperate with the clamping portion to clamp the clamping end extending into the placement space, so as to fix the product shaft on the clamping mechanism.

2. The clamping mechanism for assisting in torque detection of the product shaft according to claim 1, wherein The clamping portion includes a first clamping section and a first hinge section, and the jaw claws include a second clamping section and a second hinge section; the first hinge section and the second hinge section are respectively provided with a first through hole and a second through hole along a first direction. The clamping mechanism further includes a hinge shaft, and the hinge shaft passes through the first through hole and the second through hole to hinge the first hinge section and the second hinge section; the first clamping section is connected to one end of the first hinge section away from the hinge shaft, and the second clamping section is connected to one end of the second hinge section away from the hinge shaft. The first clamping section can cooperate with the second clamping section to clamp the clamping end extending into the placement space when the jaw claws are in the clamping position.

3. The clamping mechanism for assisting in torque detection of the product shaft according to claim 2, characterized in that One side of the first clamping section facing the placement space forms a first clamping wall, and the first clamping wall is recessed in a direction away from the placement space to form a first clamping groove; one side of the second clamping section facing the placement space forms a second clamping wall, and the second clamping wall is recessed in a direction away from the placement space to form a second clamping groove; when the jaw claws are in the clamping position, the first clamping groove and the second clamping groove enclose a clamping cavity for clamping the clamping end.

4. The clamping mechanism for assisting in torque detection of the product shaft according to claim 3, characterized in that, Both the first clamping groove and the second clamping groove are arranged in a polygonal prism shape, and each groove wall of the first clamping groove and the second clamping groove abuts against the product shaft.

5. The clamping mechanism for assisting torque detection of the product shaft according to claim 4, characterized in that, Both the first clamping groove and the second clamping groove are arranged in a triangular prism shape and each includes two groove walls arranged at an angle. The two groove walls of the first clamping groove and the two groove walls of the second clamping groove both abut against the product shaft.

6. The clamping mechanism for assisting in torque detection of the product shaft according to claim 2, wherein, The first hinge section includes two hinge blocks arranged at intervals along the first direction. The first through holes are provided on both hinge blocks, and a hinge space is formed between the two hinge blocks. The second hinge section extends into the hinge space, and the hinge shaft sequentially passes through one of the first through holes, the second through hole and the other first through hole to hinge the first hinge section and the second hinge section.

7. The clamping mechanism for assisting in torque detection of the product shaft according to claim 6, wherein, The width of the hinge block in the second direction is greater than the width of the first clamping section in the second direction, the width of the second hinge section in the second direction is greater than the width of the second clamping section in the second direction, and the first direction is perpendicular to the second direction; when the jaw is in the clamping position, the two sides of the hinge block in the second direction are flush with the two sides of the second hinge section in the second direction, and the side of the first clamping section away from the second clamping section and the side of the second clamping section away from the first clamping section are respectively flush with the two sides of the hinge block in the second direction.

8. The clamping mechanism for assisting the torque detection of the product shaft according to any one of claims 2 to 7, characterized in that The clamping portion further includes a first transition section, and the first clamping section is connected to one end of the first hinge section away from the hinge axis through the first transition section; the jaw further includes a second transition section, and the second clamping section is connected to one end of the second hinge section away from the hinge axis through the second transition section; a first locking hole and a second locking hole are respectively formed in the first transition section and the second transition section along a direction perpendicular to the first direction, and the clamping mechanism further includes a locking member, and the locking member is used to pass through the first locking hole and the second locking hole to lock the clamping portion and the jaw.

9. The clamping mechanism for assisting in torque detection of the product shaft according to claim 8, wherein, The locking member is a screw, and the first locking hole and / or the second locking hole is a screw hole that is threadedly engaged with the screw.

10. A detection device for detecting the torque of a product to be measured, characterized in that, The detection device applies the clamping mechanism for torque detection using the auxiliary product shaft as described in any one of claims 1 to 9, and the clamping mechanism is used to clamp and fix the product shaft of the product to be measured.

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