Test piece test platform

Abstract

The utility model relates to the field of detection instruments, in particular to a test piece testing platform which is used for testing the performance of a test piece with external threads, a loading mechanism of the test piece testing platform can apply loading force in the axial direction of the test piece to the test piece, and a rotating assembly is provided with a threaded hole corresponding to the external threads of the test piece. The control system controls the loading mechanism to enable the test piece to move up and down in a reciprocating mode, the test piece can drive the rotating assembly to rotate under the action of the loading mechanism, so that the actual use state that linear motion of the test piece is converted into radial rotation is simulated, the torque adjusting mechanism can adjust the torque of the rotating assembly, and the test requirements of the test piece under different conditions are met. In the whole process, the thrust borne by the test piece can be measured in real time by the first pressure detection unit, the stability and strength of the test piece can be effectively detected, material selection of the test piece is facilitated, and therefore the equipment reliability is improved.

Description

Technical Field

[0001] This application relates to the field of detection instruments and discloses a test platform for specimens. Background Art

[0002] In medical equipment such as PCR amplifiers, some components with threaded structures are usually used to convert their linear up-and-down movement into the radial rotation of a threaded rod. Such components are called "hooks". As important structural components in medical instruments, the reliability of such "hooks" is inseparable from the instrument performance. Such components are generally injection-molded and rubber-coated parts. In order to achieve good stability and strength, the material selection of the plastic part is particularly important, and the material requirements are very high. Moreover, there are certain requirements for the linear thrust of these components. Therefore, it is necessary to detect the performance and lifespan of these structures. Utility Model Content

[0003] To solve or at least partially solve the above technical problems, this application provides a test platform for specimens, which is used to test the performance of specimens with external threads and includes:

[0004] A loading mechanism, which is used to install the specimen and apply a loading force along the axial direction of the specimen. The loading mechanism has a first pressure detection unit for testing the loading force;

[0005] A rotating assembly, which has a threaded hole corresponding to the external thread;

[0006] Under the action of the loading force, the specimen can drive the rotating assembly to rotate through the cooperation of the external thread and the threaded hole;

[0007] A torque adjustment mechanism, which is connected to the rotating assembly and is used to adjust the torque of the rotating assembly.

[0008] A control system, which is electrically connected to the loading mechanism and is configured to obtain the data of the first pressure detection unit and control the operation of the loading mechanism.

[0009] Optionally, the loading mechanism includes:

[0010] A first moving module, which has a moving direction parallel to the axial direction of the threaded hole;

[0011] A first driving component, which is connected to the first moving module and can drive the first moving module to make reciprocating movements;

[0012] A first mounting seat, which is connected to the first moving module through the first pressure detection unit, and the first mounting seat is used to install the specimen.

[0013] Optionally, a one-way bearing is provided on the first mounting seat, and the one-way bearing is used to restrict the rotation of the test piece when the test piece moves into the threaded hole, and to allow the test piece to rotate to disengage from the threaded hole when the test piece moves out of the threaded hole.

[0014] Optionally, the first moving module includes:

[0015] A first sliding track, mounted on the bracket of the test piece testing platform, and the first sliding track is parallel to the axial direction of the threaded hole;

[0016] A first movable plate, mounted on the first sliding track, and the first movable plate is movably connected to the first driving component;

[0017] The first pressure detection unit is clamped between the first movable plate and the first mounting seat to detect the loading force.

[0018] Optionally, the rotating component includes:

[0019] A second mounting seat, with a rotating seat provided inside;

[0020] A fitting, provided on the rotating seat, the threaded hole is provided on the fitting, and the fitting and the rotating seat can rotate relative to the second mounting seat.

[0021] Optionally, the torque adjustment mechanism includes:

[0022] An elastic member, the elastic force direction of the elastic member is consistent with the axial direction of the threaded hole, and one end of the elastic member abuts against the rotating seat;

[0023] An adjusting device, connected to the other end of the elastic member, and the adjusting device is used to adjust the elastic force of the elastic member and can adjust the torque of the fitting by adjusting the elastic force of the elastic member.

[0024] Optionally, the elastic member includes:

[0025] A spring, the axial direction of the spring is parallel to the axial direction of the threaded hole;

[0026] An adjusting plate, provided at one end of the spring and connected to the adjusting device;

[0027] An abutting member, provided at the other end of the spring and abutting against the rotating seat through a ball component, and the abutting member adjusts the torque of the fitting by adjusting the pressure on the ball component.

[0028] Optionally, the adjusting device includes:

[0029] The second moving module has a moving direction parallel to the axial direction of the threaded hole, and the adjusting plate is connected to the second moving module;

[0030] The second driving assembly is connected to the second moving module and can drive the second moving module to perform reciprocating motion.

[0031] Optionally, the second moving module includes:

[0032] The second sliding track is installed on the base of the test piece test platform, and the second sliding track is parallel to the axial direction of the threaded hole;

[0033] The second movable plate is installed on the second sliding track, and the second movable plate is movably connected to the second driving assembly;

[0034] The second movable plate is connected to the adjusting plate through a second pressure detection unit, and the second pressure detection unit is used to obtain the pressure of the spring.

[0035] Optionally, the control system is electrically connected to the second pressure detection unit and the second driving assembly, and is configured to control the operation of the second driving assembly based on the detected pressure value of the second pressure detection unit to adjust the torque of the fitting.

[0036] The test piece test platform provided by the present application is provided with a loading mechanism for axially moving the test piece and a rotating assembly for rotating the test piece in cooperation. The loading mechanism can apply an axial loading force to the test piece. The rotating assembly has a threaded hole corresponding to the external thread of the test piece. The control system controls the loading mechanism to move the test piece up and down reciprocally. Under the action of the loading mechanism, the test piece can drive the rotating assembly to rotate, so as to simulate the actual use state in which the linear motion of the test piece is converted into radial rotation. The torque adjustment mechanism can adjust the torque of the rotating assembly to meet the test requirements under different conditions of the test piece. The thrust received by the test piece during the whole process can be measured in real time by the first pressure detection unit, which can effectively detect the stability and strength of the test piece, help with the material selection of the test piece, and thus improve the reliability of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to more clearly illustrate the implementation manners of the present application, the relevant drawings will be briefly introduced below. It can be understood that the drawings described below are only used to illustrate some implementation manners of the present application, and those of ordinary skill in the art can also obtain many other technical features and connection relationships not mentioned in this text based on these drawings.

[0038] Figure 1 It is a schematic internal structure diagram of the test piece test platform of the present application;

[0039] Figure 2This is a cross-sectional diagram of the internal structure of the test platform for the specimen in this application;

[0040] Figure 3 for Figure 2 A magnified schematic diagram of part A in FIG;

[0041] Figure 4 This is a schematic diagram of the appearance of the test platform for the specimen in this application;

[0042] Figure 5 This is a schematic diagram of the connection between the test piece and the mating parts of the test piece test platform for this application;

[0043] Figure 6 This is a schematic cross-sectional view of the specimen of the specimen testing platform of this application.

[0044] Description of reference numerals:

[0045] 101. Bracket; 102. Base; 103. Housing; 104. Test table; 105. Avoidance;

[0046] 21. First moving module; 211. First sliding track; 212. First movable plate; 213. First movable block; 22. First driving assembly; 221. First servo motor; 222. First transmission member; 223. First transmission wire shaft; 23. First mounting seat; 231. One-way bearing;

[0047] 31. Second mounting seat; 32. Rotating seat; 33. Matching member; 331. Threaded hole; 332. Engaging structure;

[0048] 41. Elastic assembly; 411. Spring; 412. Adjustment plate; 413. Abutment member; 414. Ball assembly; 415. Spring shaft; 42. Second movable module; 421. Second sliding track; 422. Second movable plate; 423. Second movable block; 43. Second drive assembly; 431. Second servo motor; 432. Second transmission member; 433. Second transmission wire shaft;

[0049] 51. First pressure detection unit; 52. Second pressure detection unit;

[0050] 60. Control system;

[0051] 70. Test piece; 701. External thread. DETAILED DESCRIPTION

[0052] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Apparently, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0053] The technical solutions in the embodiments of the present application will be described in detail below with reference to the accompanying drawings in the embodiments of the present application.

[0054] This embodiment provides a specimen test platform that can simulate the actual use state in which the linear motion of the specimen 70 is converted into radial rotation, and can perform performance tests on the specimen 70 with an external thread 701.

[0055] The specimen test platform includes a loading mechanism, a rotating assembly, a torque adjustment mechanism, and a control system 60. The loading mechanism is used to mount the specimen 70 and can apply a loading force along the axial direction of the specimen 70. The rotating assembly has a threaded hole 331 corresponding to the external thread 701 of the specimen and can rotate under the loading of the specimen 70. Through the cooperation of the external thread 701 of the specimen 70 and the threaded hole 331, the linear motion of the specimen 70 can be converted into the radial rotation of the rotating assembly.

[0056] This embodiment is provided with a torque adjustment mechanism. The torque adjustment mechanism is connected to the rotating assembly and is used to adjust the torque of the rotating assembly to meet the test requirements of the specimen 70 under different conditions.

[0057] The loading mechanism has a first pressure detection unit 51 for testing the loading force applied to the specimen 70. The control system 60 uses a PLC controller and is electrically connected to the loading mechanism and the first pressure detection unit 51. The control system 60 controls the loading mechanism to apply a loading force to the specimen 70, and at the same time detects the real-time change of the loading force through the first pressure detection unit 51. When the control system 60 controls the loading mechanism to perform a reciprocating motion on the specimen 70, the first pressure detection unit 51 can immediately measure the magnitude of the loading force. By analyzing the loading force value and recording the number of movements of the specimen 70, and observing the test situation of the specimen 70, the stability and strength of the specimen 70 can be effectively detected.

[0058] Such as Figure 1As shown, in one embodiment, the loading mechanism includes a first movable module 21, a first drive assembly 22 and a first mounting seat 23. The first movable module 21 is movably connected to the first drive assembly 22. The first drive assembly 22, as a power source, can drive the first movable module 21 to reciprocate in a predetermined direction. The first mounting seat 23 is installed on the first movable module 21. The first mounting seat 23 is used to install and fix the specimen 70. The first movable module 21 has a moving direction parallel to the axial direction of the threaded hole 331 of the rotating assembly. The movement of the first movable module 21 drives the specimen 70 to move along the axial direction of the specimen 70 itself, and applies a loading force to the specimen 70 and enables the specimen 70 to act on the threaded hole 331 of the rotating assembly.

[0059] Specifically, such as Figure 1 and Figure 2 As shown, the first movable module 21 consists of a first sliding rail 211 and a first movable plate 212. The specimen testing platform has a bracket 101 inside. The first sliding rail 211 is arranged vertically and mounted on the bracket 101. The first movable plate 212 is arranged horizontally and mounted on the first sliding rail 211. Preferably, the first sliding rails 211 can be arranged in pairs to ensure the stability of the first movable plate 212.

[0060] In this embodiment, the first drive assembly 22 includes a first servo motor 221, which is connected to the first transmission wire shaft 223 through the first transmission member 222. The first transmission wire shaft 223 is vertically installed on the bracket 101 through a bearing. A first movable block 213 is provided at one end of the first movable plate 212. The first movable block 213 is threadedly engaged with the first transmission wire shaft 223 and is sleeved on the first transmission wire shaft 223. In this way, the first servo motor 221 can drive the first transmission wire shaft 223 to rotate through the first transmission member 222. The rotation of the first transmission wire shaft 223 causes the first movable block 213 to move, thereby driving the first movable plate 212 to move up and down, thereby realizing the vertical movement of the test piece 70.

[0061] The first pressure detection unit 51 is sandwiched between the first movable plate 212 and the first mounting base 23 to detect the loading force. When the test piece 70 contacts the threaded hole 331 and is subjected to force, the first pressure detection unit 51 can measure the pressure exerted on the test piece 70 .

[0062] like Figure 2 and Figure 3 As shown, in this embodiment, the rotating assembly includes a second mounting seat 31, a rotating seat 32 and a matching piece 33. The second mounting seat 31 is fixed on the bracket 101, the rotating seat 32 is installed in the second mounting seat 31 and can rotate inside the second mounting seat 31, and the matching piece 33 is detachably installed in the rotating seat 32 and can rotate synchronously with the rotating seat 32.

[0063] As Figure 5 and Figure 6 shown, in this embodiment, the fitting 33 is a threaded sleeve structure. The fitting 33 is the test part that directly contacts the specimen 70. A threaded hole 331 is provided on the fitting 33, and the fitting 33 is vertically arranged so that the threaded hole 331 is in a vertical state. During the test, the specimen 70 is located directly above the threaded hole 331, and the two are on the same axis. The specimen 70 is driven downward by the loading mechanism. The lower end of the fitting 33 contacts the fitting 33 and inserts into the threaded hole 331. The specimen 70 transmits the loading force to the fitting 33. Since the specimen 70 is installed on the first mounting seat 23 and is restricted from rotating in a fixed direction, the specimen 70 cannot rotate at this time. The external thread 701 of the specimen 70 interacts with the threaded hole 331 of the fitting 33, causing the fitting 33 to rotate.

[0064] In one embodiment, as Figure 5 and Figure 6 shown, a clamping structure 332 is provided at the bottom of the fitting 33. Correspondingly, a clamping groove corresponding to the clamping structure 332 is provided on the mounting surface of the rotating seat 32. The fitting 33 is installed in the clamping groove through the clamping structure 332 to prevent relative rotation between the fitting 33 and the rotating seat 32.

[0065] It should be noted that in this embodiment, the rotation of the fitting 33 and the rotating seat 32 has a certain torque. According to the different torques, the loading force required for the loading mechanism to push the specimen 70 is different. Therefore, in this embodiment, by setting different torques between the fitting 33 and the rotating seat 32, the loading force required for the loading mechanism is measured, and thus the strength and stability of the structure of the specimen 70 can be detected.

[0066] Especially for detecting the external thread 701 structure of the specimen 70. For some specimens 70, due to the requirements of special equipment, the external thread 701 of the specimen 70 is an injection-molded rubber-coated part. In order to meet the strength and stability of the structure of the specimen 70 and detect the performance of the axial movement of the specimen 70 being converted into radial rotation, this embodiment provides a real simulation scenario, which can effectively simulate the actual use state of the linear movement of the specimen 70 being converted into radial rotation. The loading force received by the specimen 70 during the whole process can be measured in real time by the first pressure detection unit 51, which can effectively detect the stability and strength of the specimen and contribute to the material selection of the specimen, thereby improving the reliability of the equipment.

[0067] In the test piece test platform of this embodiment, the control system 60 controls the movement of the loading mechanism, enabling the test piece 70 to reciprocate up and down, and simultaneously driving the lower mating part 33 to rotate. For one reciprocating movement, the required thrust value is measured in real time by the first pressure detection unit 51, and the number of movements is recorded. The control system 60 detects the real-time thrust applied to the test piece 70 through the first pressure detection unit 51, can record and plot the pressure curve, analyze the pressure change trend. The control system 60 can also record the extreme values during the test process, record the number of tests and achieve resetting the number of tests at any time, realizing the effective detection of the performance of the test piece 70.

[0068] The control system 60 can also set an alarm threshold. When the first pressure detection unit 51 detects that the applied pressure is too large due to some abnormal factor, the control system 60 controls the loading mechanism to stop urgently, retaining the abnormal "scene" for convenient observation of the abnormal cause, and avoiding damage to the test piece 70 and the equipment platform.

[0069] In this embodiment, the loading mechanism needs to ensure that the test piece 70 does not rotate during the advancing process. When the test piece 70 retracts and exits the threaded hole 331, due to the restrictive effect of the thread, the test piece 70 needs to rotate to exit. Therefore, as Figure 2 shown, in this embodiment, a one-way bearing 231 is provided on the first mounting seat 23, and the upper end of the test piece 70 is mounted on the one-way bearing 231. The one-way bearing 231 is used to restrict the rotation of the test piece 70 when the test piece 70 moves into the threaded hole 331, and can enable the test piece 70 to rotate to disengage from the threaded hole 331 when the test piece 70 moves out of the threaded hole 331.

[0070] As Figure 1 shown, in this embodiment, the torque adjustment mechanism includes an elastic component 41 and an adjustment device. The elastic force direction of the elastic component 41 is consistent with the axial direction of the threaded hole 331. One end of the elastic component 41 abuts against the rotating seat 32. The elastic component 41 applies pressure to the rotating seat 32 by abutting against the rotating seat 32, and adjusts the rotational resistance between the rotating seat 32 and the mating part 33 by changing the magnitude of this pressure, thereby adjusting the torque required for testing the test piece 70. The adjustment device is connected to the other end of the elastic component 41, and the adjustment device is used to adjust the elastic force of the elastic component 41, and can adjust the torque of the mating part 33 by adjusting the elastic force of the elastic component 41.

[0071] Specifically, in one embodiment, the elastic component 41 includes a spring 411. The spring 411 is installed on a spring shaft 415. The axial direction of the spring 411 is parallel to the axial direction of the threaded hole 331. One end of the spring 411 is provided with an adjustment plate 412, and the other end is provided with an abutting member 413. The adjustment plate 412 is connected to the adjustment device, and the abutting member 413 abuts against the bottom of the rotating seat 32 to apply pressure.

[0072] AsFigure 3 As shown, in this embodiment, a ball component 414 is provided between the abutting member 413 and the bottom of the rotating seat 32. The ball component 414 can ensure that while the abutting member 413 applies pressure to the rotating seat 32, the rotating seat 32 can rotate normally. The abutting member 413 adjusts the torque of the rotating seat 32 and the mating member 33 by adjusting the pressure on the ball component 414.

[0073] As Figure 1 shown, in one embodiment, the adjusting device includes a second moving module 42 and a second driving component 43. The second moving module 42 has a moving direction parallel to the axial direction of the threaded hole 331, and the adjusting plate 412 is connected to the second moving module 42; the second driving component 43 is connected to the second moving module 42 and can drive the second moving module 42 to move reciprocally, thereby adjusting the stroke of the spring 411, so as to realize the adjustment of the pressure applied by the spring 411 to the rotating seat 32.

[0074] Specifically, as Figure 2 shown, the second moving module 42 includes a second sliding track 421 and a second movable plate 422. The second sliding track 421 is installed on the base 102 of the specimen test platform. The second sliding track 421 is arranged vertically to be parallel to the axial direction of the threaded hole 331. The second movable plate 422 is installed on the second sliding track 421. The second movable plate 422 is arranged horizontally and is movably connected to the second driving component 43.

[0075] In one embodiment, the second driving component 43 includes a second servo motor 431. The second servo motor 431 is connected to a second transmission screw shaft 433 through a second transmission member 432. The second transmission screw shaft 433 is vertically installed on the bracket 101 through a bearing. One end of the second movable plate 422 is provided with a second movable block 423. The second movable block 423 is threadedly engaged with the second transmission screw shaft 433 and sleeved on the second transmission screw shaft 433. Similarly, the second servo motor 431 drives the second transmission screw shaft 433 to rotate through the second transmission member 432. The rotation of the second transmission screw shaft 433 makes the second movable block 423 move, which drives the second movable plate 422 to move up and down. The second movable plate 422 drives the adjusting plate 412 to move up and down to adjust the formation of the spring 411, so as to realize the torque adjustment of the rotating seat 32 and the mating member 33.

[0076] As Figure 2 shown, in one embodiment, the first transmission member 222 and the second transmission member 432 can be a connection structure of a synchronous pulley and a synchronous belt.

[0077] In this embodiment, a second pressure detection unit 52 is further provided. The second pressure detection unit 52 is connected between the second movable plate 422 and the adjustment plate 412 and is used to transmit and record the pressure between the second movable plate 422 and the adjustment plate 412 to obtain the pressure of the spring 411.

[0078] In this embodiment, the control system 60 is electrically connected to the second pressure detection unit 52 and the second drive assembly 43 . The control system 60 can control the operation of the second drive assembly 43 to adjust the torque of the fitting 33 based on the detection pressure value of the second pressure detection unit 52 .

[0079] Generally, adjusting the torque of the fitting 33 by the travel of the spring 411 is affected by factors such as aging and wear of the spring 411, and the elasticity of the spring 411 needs to be regularly verified. In this embodiment, the control system 60 directly tests the elastic force provided by the spring 411 through the second pressure detection unit 52, compensating for factors such as spring 411 aging and mechanical friction in real time, thereby achieving more precise torque control. When the pressure value detected by the second pressure detection unit 52 deviates from the set value, the control system 60 can directly send a command to the second servo motor 431 in the specimen test platform. The second servo motor 431 moves according to the command to relax or tighten the spring 411, quickly adjusting the pressure value to ensure that the torque required by the fitting 33 is within the set value range, thereby improving the accuracy of the platform test.

[0080] like Figure 4 As shown, the specimen testing platform of this embodiment has a shell 103, and the loading mechanism, rotating assembly, torque adjustment mechanism and control system 60 are all arranged inside the shell 103. A groove is provided on one side surface of the shell 103, and the bottom plane of the groove forms a test table 104. The mating part 33 is provided on the test table 104 for observation or installation. A avoidance opening 105 is provided directly above the test table 104, and the first mounting seat 23 and the specimen 70 extend from the avoidance opening 105. In this way, during the detection test, the specimen 70 and the mating part 33 are exposed to the outside of the shell 103 for easy observation. The avoidance opening 105 provides convenience for the installation and maintenance of the equipment.

[0081] In the description of the embodiments of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the embodiments of the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation on the embodiments of the present utility model. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0082] In the description of the embodiments of the present utility model, it should be noted that unless otherwise clearly defined and limited, the terms "connected" and "connected to" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present utility model can be understood according to specific circumstances.

[0083] In the embodiments of the present utility model, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature can be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature can be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature can be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0084] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the embodiments of the present utility model. In this specification, the schematic descriptions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples.

[0085] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A specimen testing platform for performing performance tests on a specimen (70) with an external thread (701), characterized in that, Comprising: A loading mechanism for mounting the specimen (70) and applying a loading force along the axial direction of the specimen (70), the loading mechanism having a first pressure detection unit (51) for testing the loading force; A rotating assembly having a threaded hole (331) corresponding to the external thread (701); Under the action of the loading force, the specimen (70) can drive the rotating assembly to rotate through the cooperation of the external thread (701) and the threaded hole (331); A torque adjustment mechanism connected to the rotating assembly for adjusting the torque of the rotating assembly; A control system (60) electrically connected to the loading mechanism, configured to acquire the data of the first pressure detection unit (51) and control the operation of the loading mechanism.

2. The test piece testing platform according to claim 1, characterized in that, The loading mechanism includes: A first moving module (21) having a moving direction parallel to the axial direction of the threaded hole (331); A first driving component (22) connected to the first moving module (21) and capable of driving the first moving module (21) to perform reciprocating motion; A first mounting seat (23) connected to the first moving module (21) through the first pressure detection unit (51), the first mounting seat (23) being used for mounting the specimen (70).

3. The test piece testing platform according to claim 2, wherein, A one-way bearing (231) is provided on the first mounting seat (23), and the one-way bearing (231) is used to limit the rotation of the specimen (70) when the specimen (70) moves into the threaded hole (331), and to enable the specimen (70) to rotate to disengage from the threaded hole (331) when the specimen (70) moves out of the threaded hole (331).

4. The test piece testing platform according to claim 3, wherein, The first moving module (21) includes: A first sliding track (211) mounted on the bracket (101) of the specimen test platform, the first sliding track (211) being parallel to the axial direction of the threaded hole (331); A first movable plate (212) mounted on the first sliding track (211), the first movable plate (212) being movably connected to the first driving component (22); The first pressure detection unit (51) is clamped between the first movable plate (212) and the first mounting seat (23) to detect the loading force.

5. The test piece test platform according to any one of claims 1-4, characterized in that, The rotating assembly includes: A second mounting seat (31) with a rotating seat (32) provided inside; A fitting (33) provided on the rotating seat (32), the threaded hole (331) being provided on the fitting (33), and the fitting (33) and the rotating seat (32) being relatively rotatable with respect to the second mounting seat (31).

6. The test piece test platform according to claim 5, characterized in that The torque adjustment mechanism includes: An elastic component (41), the elastic force direction of the elastic component (41) being consistent with the axial direction of the threaded hole (331), and one end of the elastic component (41) abutting against the rotating seat (32); The adjusting device is connected to the other end of the elastic component (41). The adjusting device is used to adjust the elastic force of the elastic component (41), and can adjust the torque of the fitting (33) by adjusting the elastic force of the elastic component (41).

7. The test piece test platform according to claim 6, wherein, The elastic component includes: A spring (411), the axis of the spring (411) being parallel to the axis of the threaded hole (331); An adjusting plate (412), provided at one end of the spring (411) and connected to the adjusting device; A contact member (413), provided at the other end of the spring (411) and in contact with the rotating seat (32) through a ball component (414). The contact member (413) adjusts the torque of the fitting (33) by adjusting the pressure on the ball component (414).

8. The test piece testing platform according to claim 7, wherein, The adjusting device includes: A second moving module (42), having a moving direction parallel to the axis of the threaded hole (331), and the adjusting plate (412) is connected to the second moving module (42); A second driving component (43), connected to the second moving module (42) and capable of driving the second moving module (42) to perform a reciprocating motion.

9. The test piece testing platform according to claim 8, wherein, The second moving module (42) includes: A second sliding track (421), installed on the base (102) of the specimen test platform, and the second sliding track (421) is parallel to the axis of the threaded hole (331); A second movable plate (422), installed on the second sliding track (421), and the second movable plate (422) is movably connected to the second driving component (43); The second movable plate (422) is connected to the adjusting plate (412) through a second pressure detection unit (52), and the second pressure detection unit (52) is used to obtain the pressure of the spring (411).

10. The test piece test platform according to claim 9, characterized in that, The control system (60) is electrically connected to the second pressure detection unit (52) and the second driving component (43), and is configured to control the operation of the second driving component (43) based on the detected pressure value of the second pressure detection unit (52) to adjust the torque of the fitting (33).

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