Swing force test tooling

Abstract

The utility model relates to a kind of swing force test tool, when the swing force test of target detection instrument is carried out, the bottom end of target detection instrument is inserted in the positioning through-hole of clamping assembly, the centering element is sequentially inserted into positioning through-hole and is inserted with the swing force output end of target detection instrument and is positioned with the cooperation of jointing, so that the center axis of target detection instrument and the center axis of positioning through-hole keep coincident, further make the center axis of target detection instrument and the center axis of torsion detection element keep coincident to ensure positioning accuracy, then target detection instrument is clamped and fixed by clamping assembly, further accurate test can be carried out to target detection instrument, ensure test accuracy.

Description

Technical Field

[0001] This utility model relates to the field of testing fixture technology, and in particular to a pendulum force testing fixture. Background Technology

[0002] Instruments such as the power handle of a surgical power unit often require pendulum force testing. Therefore, a pendulum force testing fixture is needed to fix and test them. In traditional testing fixtures, after the target detection instrument is installed and fixed, the positioning accuracy between the target detection instrument and the central axis of the pendulum force testing fixture is poor, and the testing accuracy cannot be guaranteed in the case of eccentricity. Utility Model Content

[0003] Therefore, it is necessary to provide a pendulum force testing fixture to address the technical problem that the positioning accuracy of the target detection instrument and the testing fixture is poor and the testing accuracy cannot be guaranteed.

[0004] The technical solution is as follows:

[0005] On the one hand, a pendulum force testing fixture is provided, including:

[0006] A clamping assembly for clamping a target detection instrument, wherein the bottom of the clamping assembly is provided with a positioning through hole;

[0007] A torque detection element is provided, which is connected to the bottom of the clamping assembly, and the torque detection element is provided with a first through hole that corresponds to and communicates with the positioning through hole and is coaxially arranged.

[0008] A base, wherein the base is connected to the side of the torque detection element away from the clamping assembly, and the base has a second through hole that corresponds to and communicates with the first through hole and is coaxially arranged; and

[0009] A self-aligning element is provided, which passes through the second through hole, the first through hole and the positioning through hole to be inserted and positioned with the pendulum force output end of the target detection instrument, thereby enabling the pendulum force transmission between the torque detection element and the target detection instrument.

[0010] The technical solution will be further explained below:

[0011] In one embodiment, the clamping assembly includes a mounting base and at least two clamping claws. The mounting base is provided with the positioning through hole. One side of the mounting base is connected to the torque detection element. The side of the mounting base opposite to the torque detection element is provided with at least two mounting positions. The at least two mounting positions are connected one-to-one with the at least two clamping claws to form a clamping cavity that communicates with and is coaxially arranged with the positioning through hole.

[0012] In one embodiment, the mounting position is provided with a radially extending mounting groove, the bottom wall of the mounting groove is provided with a first connecting hole, the clamping claw is provided with a second connecting hole corresponding to and communicating with the first connecting hole, and the clamping assembly further includes a first connector, which passes through the first connecting hole and the second connecting hole to connect the clamping claw to the mounting base.

[0013] In one embodiment, the first connecting hole extends radially, and the extension length of the first connecting hole is less than the extension length of the mounting groove.

[0014] In one embodiment, the outer diameter of the mounting base is larger than the outer diameter of the torque sensing element, and the projection of the torque sensing element onto the mounting base in the axial direction falls within the area enclosed by each of the first connecting holes.

[0015] In one embodiment, the clamping assembly further includes a clamping member disposed on the side of the clamping claws away from the mounting base. The clamping member engages with each of the clamping claws to clamp or loosen the target detection instrument.

[0016] In one embodiment, the clamping claw has a slot on the side away from the mounting base, and the slot engages with the clamping member.

[0017] In one embodiment, the mounting base is further provided with a third connecting hole, the torque detection element is provided with a fourth connecting hole corresponding to and communicating with the third connecting hole, and the pendulum force testing fixture further includes a second connecting member, which passes through the third connecting hole and the fourth connecting hole to securely connect the mounting base and the torque detection element.

[0018] In one embodiment, the base has a fifth connecting hole on the side opposite to the torque detection element, the torque detection element has a sixth connecting hole corresponding to and communicating with the fifth connecting hole, and the pendulum force testing fixture further includes a third connecting member, which passes through the fifth connecting hole and the sixth connecting hole to securely connect the base and the torque detection element.

[0019] In one embodiment, the self-aligning element includes a guide segment that guides and engages with at least one of the first through hole and the second through hole, and a plug-in segment that engages and positions with the pendulum force output end of the target detection instrument. The guide segment and the plug-in segment are interconnected and coaxially arranged, and the outer diameter of the guide segment is larger than the outer diameter of the plug-in segment.

[0020] In the pendulum force testing fixture described in the above embodiment, when performing pendulum force testing on a target detection device, the bottom end of the target detection device is inserted into the positioning through hole of the clamping assembly. The self-aligning element is then passed through the second through hole and the first through hole in sequence and enters the positioning through hole, where it is inserted and positioned to engage with the pendulum force output end of the target detection device. This ensures that the central axis of the target detection device coincides with the central axis of the positioning through hole, and consequently, that the central axis of the target detection device coincides with the central axis of the torque detection element, thus ensuring positioning accuracy. The target detection device is then clamped and fixed by the clamping assembly, enabling accurate testing of the target detection device and ensuring testing precision. Attached Figure Description

[0021] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention.

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the pendulum force testing fixture according to one embodiment;

[0024] Figure 2 for Figure 1 A cross-sectional view of the pendulum force testing fixture AA;

[0025] Figure 3 for Figure 1 Assembly drawing of the self-aligning components of the pendulum force testing fixture;

[0026] Figure 4 for Figure 1 A schematic diagram of the mounting base for the pendulum force testing fixture;

[0027] Figure 5 for Figure 1 A schematic diagram of the clamping jaws of the pendulum force testing fixture.

[0028] Explanation of reference numerals in the attached figures:

[0029] 10. Pendulum force testing fixture; 100. Clamping assembly; 110. Positioning through hole; 120. Mounting base; 121. Mounting groove; 122. First connecting hole; 123. Third connecting hole; 130. Clamping claw; 131. Clamping cavity; 132. Second connecting hole; 133. Slot; 200. Torque detection element; 210. First through hole; 300. Base; 310. Second through hole; 400. Self-aligning element; 410. Guide section; 420. Insertion section; 500. Clamping component; 20. Target detection instrument. Detailed Implementation

[0030] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0031] like Figures 1 to 3 As shown, in one embodiment, a pendulum force testing fixture 10 is provided, including a clamping assembly 100, a torque detection element 200, a base 300, and a self-aligning element 400.

[0032] The clamping assembly 100 is used to clamp the target detection instrument 20 to fix the target detection instrument 20 for pendulum force testing. Furthermore, the bottom of the clamping assembly 100 is provided with a positioning through hole 110, so that the pendulum force output end (e.g., the bottom) of the target detection instrument 20 can be inserted into the insertion through hole.

[0033] Optionally, the clamping component 100 can be in the form of a gripper or the like, as long as it can clamp and fix the target detection instrument 20.

[0034] The torque detection element 200 is connected to the bottom of the clamping assembly 100. Furthermore, the torque detection element 200 has a first through hole 210 that corresponds to and is coaxially arranged with the positioning through hole 110.

[0035] Optionally, the torque detection element 200 can be a device such as a six-axis torque sensor, which can test the swing force of the target detection instrument 20.

[0036] The base 300 is connected to the side of the torque detection element 200 away from the clamping assembly 100. The base 300 is provided with a second through hole 310 that is correspondingly connected to and coaxially arranged with the first through hole 210. In this way, the second through hole 310, the first through hole 210 and the positioning through hole 110 are correspondingly connected and coaxially arranged.

[0037] Optionally, the base 300 can be table-shaped or seat-shaped.

[0038] In one embodiment, the upper end of the torque detection element 200 is connected and fixed to the lower end of the clamping assembly 100 by means of screwing or snap-fitting, and the lower end of the torque detection element 200 is connected and fixed to the base 300 by means of screwing or snap-fitting.

[0039] The self-aligning element 400 is inserted through the second through hole 310, the first through hole 210 and the positioning through hole 110 to be inserted and positioned with the swing force output end of the target detection instrument 20, so that the swing force transmission between the torque detection element 200 and the target detection instrument 20 can be coordinated, thereby enabling the swing force test of the target detection instrument 20 to be performed using the torque detection element 200.

[0040] The pendulum force transmission cooperation between the torque detection element 200 and the target detection instrument 20 means that there can be a pendulum force transmission between the two, so that the torque detection element 200 can be used to test the pendulum force of the target detection instrument 20.

[0041] Optionally, the self-aligning element 400 can be in the form of a self-aligning rod or a self-aligning column, as long as it can be inserted and positioned with the swing force output end of the target detection instrument 20 so that the central axis of the target detection instrument 20 coincides with the central axis of the positioning through hole 110, thereby making the central axis of the target detection instrument 20 coincide with the central axis of the torque detection element 200.

[0042] In the pendulum force testing fixture 10 of the above embodiment, when performing pendulum force testing on the target detection instrument 20, the pendulum force output end of the target detection instrument 20 is inserted into the positioning through hole 110 of the clamping assembly 100. The self-aligning element 400 passes through the second through hole 310 and the first through hole 210 in sequence and enters the positioning through hole 110, and is inserted and positioned with the pendulum force output end of the target detection instrument 20. This ensures that the central axis of the target detection instrument 20 coincides with the central axis of the positioning through hole 110, and further ensures that the central axis of the target detection instrument 20 coincides with the central axis of the torque detection element 200, thus ensuring positioning accuracy. The clamping assembly 100 then clamps and fixes the target detection instrument 20, thereby enabling accurate testing of the target detection instrument 20 and ensuring testing accuracy.

[0043] like Figures 1 to 3As shown, in one embodiment, the clamping assembly 100 includes a mounting base 120 and at least two clamping claws 130. The mounting base 120 has a positioning through hole 110. One side of the mounting base 120 is connected to the torque detection element 200 by means of screwing or snap-fit. The side of the mounting base 120 opposite to the torque detection element 200 has at least two mounting positions. Furthermore, the at least two mounting positions are connected one-to-one with the at least two clamping claws 130 to form a clamping cavity 131 that communicates with and is coaxially arranged with the positioning through hole 110. Thus, the target detection instrument 20 is inserted into the clamping cavity 131 and its bottom end is inserted into the positioning through hole 110 to achieve coarse positioning. Then, the self-aligning element 400 passes through the second through hole 310 and the first through hole 210 and enters the positioning through hole 110 to be inserted and positioned with the swing force output end of the target detection instrument 20. This ensures that the central axis of the target detection instrument 20 coincides with the central axis of the positioning through hole 110, and in turn, the central axis of the target detection instrument 20 coincides with the central axis of the torque detection element 200 to ensure positioning accuracy. Then, the target detection instrument 20 is clamped and fixed by each clamping claw 130, so that the target detection instrument 20 can be accurately tested and the testing accuracy can be guaranteed.

[0044] The number of gripping claws 130 can be flexibly adjusted or designed according to actual gripping needs, for example, there can be two, three or more.

[0045] The connection between the mounting position and the clamping claw 130 can be achieved through plug-in, screw-in, or snap-fit ​​methods.

[0046] like Figure 3 and Figure 4 As shown, in one embodiment, the mounting position is provided with a radially extending mounting groove 121, and the bottom wall of the mounting groove 121 is provided with a first connecting hole 122. The clamping claw 130 is provided with a second connecting hole 132 corresponding to and communicating with the first connecting hole 122. Furthermore, the clamping assembly 100 also includes a first connector, which, by passing through the first connecting hole 122 and the second connecting hole 132, can connect and fix the clamping claw 130 to the mounting base 120.

[0047] The engagement between the first connector and the first connecting hole 122 and the second connecting hole 132 can be achieved by threaded engagement or plug-in engagement, as long as the clamping claw 130 can be connected and fixed to the mounting base 120.

[0048] In one embodiment, the first connector is a threaded component, and both the first connecting hole 122 and the second connecting hole 132 are threaded holes capable of threaded engagement with the threaded component.

[0049] In one embodiment, the first connector is a pin, and the first connecting hole 122 and the second connecting hole 132 are both insertion holes that can be inserted and engaged with the pin.

[0050] In one embodiment, the first connecting hole 122 extends radially. Thus, after the first connector is inserted into the first connecting hole 122, its position can be adjusted radially, thereby allowing the clamping cavity 131 to communicate with and be coaxially aligned with the positioning through hole 110. Furthermore, the extension length of the first connecting hole 122 is less than the extension length of the mounting groove 121, ensuring that the first connecting hole 122 is circumferentially closed, preventing the first connector from detaching from the mounting base 120 during radial position adjustment.

[0051] like Figure 2 and Figure 3 As shown, in one embodiment, the outer diameter of the mounting base 120 is larger than the outer diameter of the torque sensing element 200, and the projection of the torque sensing element 200 on the mounting base 120 along the axial direction falls within the area enclosed by the respective first connecting holes 122. This facilitates the first connector passing through the first connecting hole 122 and the second connecting hole 132, avoiding interference or resistance from the torque sensing element 200 to the installation of the first connector.

[0052] The clamping and fixing of the target detection instrument 20 by each clamping claw 130 can be achieved by clamping or holding.

[0053] like Figure 1 and Figure 3 As shown, in one embodiment, the clamping assembly 100 further includes a clamping member 500. The clamping member 500 is disposed on the side of the clamping claws 130 away from the mounting base 120. The clamping member 500 engages with each clamping claw 130 in a clamping or loosening engagement to clamp or release the target detection instrument 20. Thus, the target detection instrument 20 is clamped and fixed by clamping each clamping claw 130 with the clamping member 500, and the target detection instrument 20 is released by loosening each clamping claw 130 with the clamping member 500.

[0054] Optionally, the clamping member 500 can be in the form of a clamp or a ring.

[0055] like Figure 3 and Figure 5 As shown, in one embodiment, the clamping claw 130 has a slot 133 on the side away from the mounting base 120, and the slot 133 engages with the clamping member 500. In this way, the clamping member 500 is engaged in the slot 133 of the clamping claw 130, preventing the clamping member 500 from sliding or moving relative to the clamping claw 130, and ensuring that the clamping claw 130 can stably and reliably clamp and fix the target detection instrument 20.

[0056] In one embodiment, the mounting base 120 is further provided with a third connecting hole 123. The torque detection element 200 is provided with a fourth connecting hole corresponding to and communicating with the third connecting hole 123. Furthermore, the pendulum force testing fixture 10 also includes a second connecting member. By passing the second connecting member through the third connecting hole 123 and the fourth connecting hole, the mounting base 120 and the torque detection element 200 can be securely connected, facilitating the pendulum force test of the target testing instrument 20.

[0057] The second connector can be fitted with the third and fourth connecting holes 123 or through threaded or plug-in fittings, as long as it can connect and fix the mounting base 120 to the torque detection element 200.

[0058] In one embodiment, the second connector is a threaded component, and the third connecting hole 123 and the fourth connecting hole are both threaded holes capable of threaded engagement with the threaded component.

[0059] In one embodiment, the second connector is a pin, and the third connecting hole 123 and the fourth connecting hole are both insertion holes that can be inserted and engaged with the pin.

[0060] In one embodiment, the base 300 has a fifth connecting hole on the side opposite to the torque detection element 200. The torque detection element 200 has a sixth connecting hole that communicates with the fifth connecting hole. Furthermore, the pendulum force testing fixture 10 also includes a third connecting member, which, by passing through the fifth and sixth connecting holes, allows the base 300 and the torque detection element 200 to be securely connected.

[0061] The engagement of the third connector with the fifth and sixth connecting holes can be achieved through threaded engagement or plug-in engagement, as long as it satisfies the requirement of connecting and fixing the base 300 with the torque detection element 200.

[0062] In one embodiment, the third connector is a threaded component, and the fifth and sixth connecting holes are both threaded holes capable of threaded engagement with the threaded component.

[0063] In one embodiment, the third connector is a pin, and the fifth and sixth connecting holes are both insertion holes that can be inserted and mated with the pin.

[0064] like Figure 2 and Figure 3As shown, in one embodiment, the self-aligning element 400 includes a guide section 410 that guides and engages with at least one of the first through hole 210 and the second through hole 310, and an insertion section 420 that inserts and positions itself with the pendulum force output end of the target detection instrument 20 to facilitate pendulum force transmission between the torque detection element 200 and the target detection instrument 20. Furthermore, the guide section 410 and the insertion section 420 are interconnected and coaxially arranged. Moreover, the outer diameter of the guide section 410 is larger than the outer diameter of the insertion section 420. Thus, when the guide section 410 and the insertion section 420 of the self-aligning element 400 pass sequentially through the second through hole 310 and the first through hole 210 into the positioning through hole 110, the guide section 410 is guided and engaged with at least one of the first through hole 210 and the second through hole 310, thereby keeping the guide section 410 coaxial with at least one of the first through hole 210 and the second through hole 310. This, in turn, keeps the insertion section 420 coaxial with at least one of the first through hole 210 and the second through hole 310. Combined with the insertion and positioning engagement of the insertion section 420 with the pendulum force output end of the target detection instrument 20, the central axis of the target detection instrument 20 is aligned with the central axis of the insertion section 420, and the central axis of the target detection instrument 20 is aligned with the central axis of the torque detection element 200, ensuring positioning accuracy. Then, the target detection instrument 20 is clamped and fixed by the clamping assembly 100, thereby enabling accurate testing of the target detection instrument 20 and ensuring testing accuracy.

[0065] The guide section 410 and the insertion section 420 can be integrally formed or separately formed. Both the guide section 410 and the insertion section 420 can be cylindrical.

[0066] It should be noted that "a certain body" or "a certain part" can be a portion of the corresponding "component," meaning that "a certain body" or "a certain part" is integrally formed and manufactured with the "other parts of the component"; or it can be an independent component that can be separated from the "other parts of the component," meaning that "a certain body" or "a certain part" can be manufactured independently and then combined with the "other parts of the component" to form a whole. The expression of "a certain body" or "a certain part" in this application is only one embodiment for ease of reading, and is not intended to limit the scope of protection of this application. Any technical solution that includes the above features and has the same function should be understood as an equivalent technical solution of this application.

[0067] It should be noted that the components included in the terms "unit," "component," "mechanism," and "device" of this application can be flexibly combined, enabling modular production according to actual needs and facilitating modular assembly. The division of the above-mentioned components in this application is merely one embodiment for ease of reading and is not intended to limit the scope of protection of this application. Any solution that includes the above-mentioned components and has the same function should be understood as an equivalent technical solution of this application.

[0068] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this utility model 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 utility model. The term "and / or" used in this utility model includes any and all combinations of one or more of the related listed items.

[0069] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0070] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0071] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0072] It should be noted that when a component is referred to as "fixed to," "set on," "fixed to," or "mounted on" another component, it can be directly on the other component or there may be an intervening component. When a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be an intervening component. Furthermore, when a component is considered to be "fixed transmission connection" to another component, the two can be fixed in a detachable or non-detachable manner, as long as power transmission can be achieved, such as sleeve, snap-fit, integral molding, welding, etc., which can be achieved in the prior art and will not be elaborated here. When a component is perpendicular or approximately perpendicular to another component, it means that the two are ideally perpendicular, but due to the influence of manufacturing and assembly, there may be a certain degree of perpendicularity error. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only implementation. The term "and / or" used herein includes any and all combinations of one or more of the associated listed items.

[0073] It should also be understood that, in interpreting the connection or positional relationships of components, although not explicitly described, connection and positional relationships are interpreted to include a range of error, which should be within the acceptable deviation range of a specific value as determined by a person skilled in the art. For example, "approximately," "about," or "substantially" can mean within one or more standard deviations, without limitation herein.

[0074] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0075] The above embodiments only illustrate several implementation methods of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A pendulum force testing fixture, characterized in that, include: A clamping assembly for clamping a target detection instrument, wherein the bottom of the clamping assembly is provided with a positioning through hole; A torque detection element is provided, which is connected to the bottom of the clamping assembly, and the torque detection element is provided with a first through hole that corresponds to and communicates with the positioning through hole and is coaxially arranged. A base, wherein the base is connected to the side of the torque detection element away from the clamping assembly, and the base has a second through hole that corresponds to and communicates with the first through hole and is coaxially arranged; and A self-aligning element is provided, which passes through the second through hole, the first through hole and the positioning through hole to be inserted and positioned with the pendulum force output end of the target detection instrument, thereby enabling the pendulum force transmission between the torque detection element and the target detection instrument.

2. The pendulum force testing fixture according to claim 1, characterized in that, The clamping assembly includes a mounting base and at least two clamping claws. The mounting base is provided with the positioning through hole. One side of the mounting base is connected to the torque detection element. The side of the mounting base away from the torque detection element is provided with at least two mounting positions. The at least two mounting positions are connected to at least two clamping claws in a one-to-one correspondence to form a clamping cavity that communicates with and is coaxially arranged with the positioning through hole.

3. The pendulum force testing fixture according to claim 2, characterized in that, The mounting position is provided with a radially extending mounting groove, the bottom wall of the mounting groove is provided with a first connecting hole, the clamping claw is provided with a second connecting hole corresponding to and communicating with the first connecting hole, and the clamping assembly further includes a first connector, which passes through the first connecting hole and the second connecting hole to connect the clamping claw to the mounting base.

4. The pendulum force testing fixture according to claim 3, characterized in that, The first connecting hole extends radially, and the extension length of the first connecting hole is less than the extension length of the mounting groove.

5. The pendulum force testing fixture according to claim 3, characterized in that, The outer diameter of the mounting base is larger than the outer diameter of the torque detection element, and the projection of the torque detection element on the mounting base along the axial direction falls within the area enclosed by each of the first connecting holes.

6. The pendulum force testing fixture according to any one of claims 2 to 5, characterized in that, The clamping assembly further includes a clamping member disposed on the side of the clamping claw away from the mounting base. The clamping member engages with each of the clamping claws in a clamping or loosening engagement to clamp or release the target detection instrument.

7. The pendulum force testing fixture according to claim 6, characterized in that, The clamping claw has a slot on the side away from the mounting base, and the slot engages with the clamping member.

8. The pendulum force testing fixture according to any one of claims 2 to 5, characterized in that, The mounting base is further provided with a third connecting hole, and the torque detection element is provided with a fourth connecting hole that corresponds to and communicates with the third connecting hole. The pendulum force testing fixture also includes a second connecting member, which passes through the third connecting hole and the fourth connecting hole to securely connect the mounting base and the torque detection element.

9. The pendulum force testing fixture according to any one of claims 2 to 5, characterized in that, The base has a fifth connecting hole on the side opposite to the torque detection element, and the torque detection element has a sixth connecting hole that corresponds to and communicates with the fifth connecting hole. The pendulum force testing fixture also includes a third connecting member, which passes through the fifth connecting hole and the sixth connecting hole to securely connect the base and the torque detection element.

10. The pendulum force testing fixture according to any one of claims 1 to 5, characterized in that, The self-aligning element includes a guide section that mates with at least one of the first through hole and the second through hole, and a plug section that is inserted and positioned to engage with the pendulum force output end of the target detection instrument. The guide section and the plug section are interconnected and coaxially arranged, and the outer diameter of the guide section is larger than the outer diameter of the plug section.

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