Torque testing apparatus

Abstract

The application discloses a torque testing device, and relates to the technical field of compensation structures, wherein the torque testing device comprises a base, a torque testing module and a centering compensation module; the torque testing module is installed on the base, and the torque testing module has a driving end and a load end in transmission connection with the driving end; the centering compensation module comprises a base, a centering detection mechanism, a compensation mechanism and a testing clamp jaw; the base is installed on the base and is arranged in interval with the torque testing module; the centering detection mechanism and the compensation mechanism are both installed on the base, and one end of the centering detection mechanism and the compensation mechanism is connected with the testing clamp jaw; the centering detection mechanism is used for detecting the centering condition of the testing clamp jaw, and the compensation mechanism is used for driving the testing clamp jaw to move relative to the base; the other end of the testing clamp jaw is used for being connected with the load end, so as to drive the load end to move and be centered with the driving end. The torque testing device is integrated with the centering compensation module, the centering compensation function is realized, and the convenience and the torque testing efficiency of the torque testing device are improved.

Description

Technical Field

[0001] This invention relates to the field of compensation structure technology, and in particular to a torque testing device. Background Technology

[0002] Torque measurement is a crucial step in industrial production, quality inspection, and product development. High-precision torque testing equipment is essential for ensuring product reliability, safety, and consistency. In practical application within this field, alignment and calibration are indispensable steps before torque testing to ensure the accuracy of measurement results.

[0003] In existing technologies, torque testing equipment (such as torque sensors, drive shafts, and couplings) requires a high degree of coaxiality between the rotation axes of the drive end, sensor end, and load end during installation. If parallel or angular deviations exist, additional bending moments and radial forces will be generated during power transmission. These non-torque loads act on the highly sensitive torque sensor, causing distortion of the sensor's output signal, introducing significant positive measurement errors, and severely affecting the repeatability and reliability of the test data. Furthermore, long-term operation under misalignment conditions can also cause abnormal vibrations in the equipment, accelerating wear and fatigue damage to core components such as sensors and couplings, posing a risk of equipment failure.

[0004] Currently, achieving the aforementioned alignment and calibration generally relies on external specialized alignment and calibration equipment, such as dial indicators and laser alignment instruments. Operators must use these external tools to manually position and calibrate each component of the torque testing equipment through a cumbersome process of measurement, adjustment, and verification. This externally dependent adjustment method results in insufficient overall convenience of the torque testing system and reduces torque testing efficiency. Summary of the Invention

[0005] The main objective of this invention is to propose a torque testing device that integrates a centering compensation module, enabling direct centering compensation and improving the overall convenience and torque testing efficiency of the device.

[0006] To achieve the above objectives, the present invention provides a torque testing device, the torque testing device comprising:

[0007] Base;

[0008] A torque testing module is mounted on the base. The torque testing module has a drive end and a load end, and the drive end is connected to the load end in a transmission manner.

[0009] And a centering compensation module, the centering compensation module comprises a base, a centering detection mechanism, a compensation mechanism and a test clamp, the base is installed on the base and is arranged in a spaced manner with the torque test module; the centering detection mechanism and the compensation mechanism are both installed on the base, and one end of the test clamp is connected with the centering detection mechanism and the compensation mechanism respectively, the centering detection mechanism is used for detecting the centering condition of the test clamp, and the compensation mechanism is used for driving the test clamp to move relative to the base; the other end of the test clamp is used for being connected with the load end to drive the load end to move and center with the driving end.

[0010] In an embodiment, the compensation mechanism comprises:

[0011] An upper compensation assembly, the upper compensation assembly is movably connected with the base and connected with the test clamp, and is used for driving the test clamp to move in a horizontal direction; and

[0012] A lower compensation assembly, the lower compensation assembly is movably connected with the base and abuts against the test clamp; and the lower compensation assembly is arranged adjacent to the upper compensation assembly, and the lower compensation assembly is used for driving the test clamp to move in a vertical direction.

[0013] In an embodiment, the upper compensation assembly comprises:

[0014] Two first electric sliding tables, the two first electric sliding tables are installed on the base and are arranged in a spaced manner;

[0015] A left clamp, the left clamp is connected with a piston rod of one of the first electric sliding tables; and

[0016] A right clamp, the right clamp is connected with a piston rod of another first electric sliding table;

[0017] The two first electric sliding tables are used for driving the left clamp and the right clamp to clamp the test clamp, and are used for driving the left clamp and the right clamp to move synchronously to drive the test clamp to move in a horizontal direction.

[0018] In an embodiment, the left clamp and the right clamp are both provided with clamping grooves, and the two clamping grooves are enclosed to form a clamping position, and the test clamp is clamped at the clamping position.

[0019] In an embodiment, the base is provided with a sliding groove and an adjusting hole in communication with the sliding groove, one side of the base facing the torque test module is a front side, and a groove opening of the sliding groove is located on the front side;

[0020] The lower compensation assembly comprises:

[0021] A rotating rod is installed in the sliding groove, and one end of the rotating rod extends out of the slot of the sliding groove;

[0022] A jacking rod is movably connected to the adjusting hole and abuts against the end of the rotating rod away from the slot of the sliding groove; and

[0023] A roller is sleeved on the end of the rotating rod extending out of the slot of the sliding groove, and the roller abuts against the test clamp to drive the test clamp to move in the vertical direction.

[0024] In an embodiment, the base is further provided with a mounting hole in communication with the adjusting hole, the side adjacent to the front of the base is a side surface, and the mounting hole extends to the side surface;

[0025] The lower compensation assembly further comprises a fixing rod movably penetrating the mounting hole, one end of the fixing rod abuts against the rotating rod to fix the position of the rotating rod in the sliding groove.

[0026] In an embodiment, the compensation mechanism comprises two lower compensation assemblies arranged in left and right on the front, and each abuts against the test clamp.

[0027] In an embodiment, the base is provided with an assembly groove, and the assembly groove is arranged in a spaced manner with the compensation mechanism;

[0028] The centering detection mechanism comprises a pressure sensor, the pressure sensor is installed in the assembly groove and connected with the test clamp, and is used for detecting the pressure data of the test clamp to determine whether the test clamp is deviated.

[0029] In an embodiment, the centering detection mechanism further comprises a connecting rod, and two ends of the connecting rod are respectively connected with the pressure sensor and the test clamp.

[0030] In an embodiment, the test clamp comprises:

[0031] A mounting ring connected with the compensation mechanism and the centering detection mechanism;

[0032] Two elastic members, the two elastic members are respectively connected to the inner wall of the mounting ring and arranged in a symmetrical manner;

[0033] Two clamping members, each clamping member is connected with an elastic member to make the clamping member stretch and retract relative to the mounting ring.

[0034] The torque testing device of the technical scheme of the present application comprises a base, a torque testing module and a centering compensation module. The core innovation is that an independent centering compensation module is integrated, which has its own base and comprises a centering detection mechanism, a compensation mechanism and a testing clamp jaw. One end of the testing clamp jaw is connected to a load end, and the other end is connected to the detection and compensation mechanism. Through the closed loop mode of "detection-feedback-compensation", the position of the load end is automatically adjusted to realize the centering with the driving end. Through the integrated centering compensation module, the automatic centering compensation function of the torque testing device is directly realized, and the overall convenience and testing efficiency of the device are significantly improved. Since the centering detection and compensation execution mechanism is directly integrated in the device base, the operator does not need to rely on, install and operate external centering tools, which fundamentally simplifies the operation process. Furthermore, through the direct linkage of the testing clamp jaw to the load end, the compensation mechanism can automatically and accurately drive the load end and the driving end to center according to the real-time data of the detection mechanism. This not only converts the tedious and time-consuming manual centering process into efficient automatic completion, greatly shortening the preparation time before testing, but also ensures the centering accuracy through closed loop control, thereby improving the operation convenience, and ultimately achieving the core purpose of improving the torque testing efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0035] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0036] Figure 1 The structural schematic diagram of an embodiment of the torque testing device provided by the present application;

[0037] Figure 2 The structural schematic diagram of the centering compensation module of the torque testing device provided by the present application from one perspective;

[0038] Figure 3 The structural schematic diagram of the upper compensation assembly of the centering compensation module of the torque testing device provided by the present application;

[0039] Figure 4 The structural schematic diagram of the lower compensation assembly of the centering compensation module of the torque testing device provided by the present application;

[0040] Figure 5 The longitudinal sectional view of the lower compensation assembly of the centering compensation module of the torque testing device provided by the present application;

[0041] Figure 6A lateral sectional view of a lower compensation assembly of a centering compensation module of a torque testing device.

[0042] BRIEF DESCRIPTION OF DRAWINGS

[0043] 10, base; 20, torque testing module; 21, driving end; 22, load end; 30, centering compensation module; 31, base; 31a, sliding groove; 31b, adjusting hole; 31c, mounting hole; 32, centering detection mechanism; 321, pressure sensor; 322, connecting rod; 33, compensation mechanism; 331, upper compensation assembly; 331a, first electric sliding table; 331b, left clamping jaw; 331c, right clamping jaw; 332, lower compensation assembly; 332a, rotating rod; 332b, jacking rod; 332c, roller; 332d, fixed rod; 34, testing clamping jaw; 341, mounting ring; 342, elastic member; 343, clamping member.

[0044] The implementation, functional features and advantages of the present application will be further described with reference to the embodiments and the accompanying drawings. DETAILED DESCRIPTION

[0045] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present application.

[0046] It should be noted that if the embodiments of the present application involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative positional relationship, movement condition, etc. between components in a certain posture, and if the certain posture changes, the directional indications also change accordingly.

[0047] In addition, if the embodiments of the present application involve descriptions of “first”, “second”, etc., the descriptions of “first”, “second”, etc. are only for description purposes, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by “first” and “second” can explicitly or implicitly include at least one of the features. In addition, “and / or” or “and / or” appearing throughout the text means that the three parallel solutions are included, for example, “A and / or B” includes A solution, or B solution, or A and B solutions are satisfied at the same time. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the fact that a person skilled in the art can realize it, and when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist and is not within the protection scope of the present application.

[0048] In the prior art, the torque testing device needs to rely on external special tools for centering debugging during installation, such as manually adjusting the coaxialities of the driving end, the sensor end and the load end using a dial gauge or a laser centering instrument. This operation process is cumbersome, low in debugging efficiency, and prone to measurement errors and equipment wear and tear if there is a centering deviation during long-term operation. For example, in the scenario of testing the torque of an automobile transmission shaft, the operator needs to repeatedly use external instruments for positioning and calibration, which not only consumes time but also has the risk of human error.

[0049] To solve the above problems, please refer to Figures 1 to 4 The torque testing device includes a base 10, a torque testing module 20 and a centering compensation module 30. The torque testing module 20 is installed on the base 10 and has a driving end 21 and a load end 22 connected in transmission. The centering compensation module 30 includes a base 31, a centering detection mechanism 32, a compensation mechanism 33 and a test jaw 34. The base 31 is arranged on the base 10 in a spaced manner from the torque testing module 20. The centering detection mechanism 32 and the compensation mechanism 33 are both installed on the base 31 and are respectively connected to one end of the test jaw 34 and the other end of the load end 22. The centering detection mechanism 32 is used to detect the deviation of the test jaw 34, and the compensation mechanism 33 drives the test jaw 34 to move relative to the base 31 to realize the centering of the load end 22 and the driving end 21.

[0050] In this embodiment, the base 10 refers to a support structure that carries the torque testing module 20 and the centering compensation module 30, which can be made of metal plate welding or casting, and its function is to provide a stable installation foundation for the device. The torque testing module 20 refers to a test unit that includes the driving end 21 and the load end 22, and the two are connected in transmission through a shaft coupling or a gear transmission. The base 31 of the centering compensation module 30 refers to an installation platform that is fixed to the base 10 and maintains a predetermined distance from the torque testing module 20, and the distance can be adjusted according to the size of the measured component. The centering detection mechanism 32 refers to a sensing unit for real-time monitoring of the positional deviation of the test jaw 34, which judges the centering state by detecting the force or displacement change of the test jaw. The compensation mechanism 33 refers to an execution unit that drives the test jaw 34 to move. The test jaw 34 refers to a mechanical structure that connects the load end 22 and transmits the compensation motion.

[0051] Specifically, when there is a centering deviation between the load end 22 and the driving end 21, the test jaw 34 produces a deviation during the transmission of torque. The centering detection mechanism 32 collects deviation data in real time. After receiving the signal, the compensation mechanism 33 drives the test jaw 34 to move in the horizontal or vertical direction, drives the load end 22 to adjust the position, until the feedback data of the centering detection mechanism 32 reaches the preset threshold range. The whole process does not need manual intervention, and automatic centering compensation is realized.

[0052] Compared with the prior art, the traditional scheme needs to be stopped and then measured, adjusted and verified by using external instruments in steps, while the scheme realizes dynamic real-time adjustment through the built-in detection and compensation unit. For example, when different types of workpieces are continuously tested, the prior art needs to repeatedly disassemble and install external centering tools, while the scheme only needs to automatically adapt to different shaft diameters through the compensation mechanism 33, thereby significantly shortening the debugging time. In addition, the integrated design avoids human reading error and improves the consistency of centering accuracy.

[0053] Through the above technical scheme, the application can automatically detect and correct the centering deviation during the torque test process. The linkage mechanism of the test clamping jaw 34 and the compensation mechanism 33 enables the position adjustment of the load end 22 to be matched with the driving end 21 in real time, thereby reducing the measurement error caused by poor centering. At the same time, the integrated centering compensation module 30 simplifies the operation process, and when different workpieces are continuously tested, the equipment does not need to be repeatedly disassembled, thereby effectively improving the test efficiency and equipment utilization.

[0054] Please refer to Figures 1 to 4 The application further proposes that the compensation mechanism 33 includes an upper compensation assembly 331 and a lower compensation assembly 332. The upper compensation assembly 331 is movably connected to the base 31 and connected with the test clamping jaw 34, and is used to drive the test clamping jaw 34 to move in the horizontal direction. The lower compensation assembly 332 is movably connected to the base 31 and abuts against the test clamping jaw 34, and the lower compensation assembly 332 is arranged adjacent to the upper compensation assembly 331, and is used to drive the test clamping jaw 34 to move in the vertical direction.

[0055] In the embodiment, the upper compensation assembly 331 refers to a module for realizing horizontal position adjustment of the test clamping jaw 34 through a mechanical transmission structure, which can maintain the translation stability of the test clamping jaw 34 in the horizontal plane. The lower compensation assembly 332 refers to a module for realizing vertical position adjustment of the test clamping jaw 34. The horizontal movement refers to position correction along the axis parallel to the mounting surface of the base 31, which is used to eliminate the horizontal centering deviation of the driving end 21 and the load end 22. The vertical movement refers to position correction along the axis perpendicular to the mounting surface of the base 31, which is used to eliminate the axial height deviation of the driving end 21 and the load end 22.

[0056] Specifically, when the test clamping jaw 34 needs to adjust the horizontal position, the upper compensation assembly 331 drives the test clamping jaw 34 to move horizontally along the base 31, and through the test clamping jaw 34 to exert a symmetric thrust, the test clamping jaw 34 is translated in the horizontal plane. When the vertical position needs to be adjusted, the lower compensation assembly 332 transmits a vertical thrust to the bottom of the test clamping jaw 34, so that the test clamping jaw 34 is lifted along the front direction of the base 31. The adjustment actions in the horizontal and vertical directions can be independently or synchronously executed, and the centering compensation in the three-dimensional space is realized through mechanical linkage.

[0057] Compared with the prior art, the conventional torque testing equipment relies on external instruments for axis calibration, and needs to repeatedly disassemble components and manually measure deviation values during operation, while the scheme can directly realize automatic centering through program control by integrating the electrically driven compensation mechanism 33 on the base 31, avoiding the efficiency loss and operation errors caused by manual intervention. The upper and lower compensation assemblies 332 of the scheme can simultaneously adjust multiple axial directions, significantly shortening the debugging time.

[0058] Please refer to Figures 1 to 4 The application further provides an upper compensation assembly 331 of a torque testing equipment, which comprises two first electric sliding tables 331a, a left clamping jaw 331b and a right clamping jaw 331c. The two first electric sliding tables 331a are installed on the base 31 and are arranged at intervals; the left clamping jaw 331b is connected with the piston rod of one first electric sliding table 331a; the right clamping jaw 331c is connected with the piston rod of the other first electric sliding table 331a; and the two first electric sliding tables 331a are used to drive the left clamping jaw 331b and the right clamping jaw 331c to clamp the testing clamping jaw 34, and to drive the left clamping jaw 331b and the right clamping jaw 331c to move synchronously, so as to drive the testing clamping jaw 34 to move in the horizontal direction.

[0059] The first electric sliding table 331a refers to a mechanical device that realizes linear displacement through electric driving, and can specifically adopt a structure of a servo motor cooperating with a ball screw, and the piston rod tail end can be installed with a clamping component. The left clamping jaw 331b and the right clamping jaw 331c refer to symmetrically arranged clamping components, which can specifically adopt a metal block body with a clamping groove to realize, and the clamping position is formed through the groove to fix the testing clamping jaw 34. The synchronous movement of the two first electric sliding tables 331a refers to synchronous control of the displacement amounts of the two sliding tables through a controller, and the displacement accuracy can be realized through a closed-loop feedback system.

[0060] Specifically, the two first electric sliding tables 331a drive the left clamping jaw 331b and the right clamping jaw 331c to move in the horizontal direction respectively, and rigidly fix the testing clamping jaw 34 through the clamping groove. When the horizontal position of the testing clamping jaw 34 needs to be adjusted, the two electric sliding tables receive control signals and move synchronously, drive the left clamping jaw 331b and the right clamping jaw 331c to translate in the same direction with the same displacement amount, so as to ensure the centering compensation of the testing clamping jaw 34 in the horizontal direction. Due to the constraint action of the clamping groove, the testing clamping jaw 34 will not deflect or slide during movement.

[0061] Compared with the prior art, the scheme realizes automatic horizontal displacement compensation through synchronous driving of the two electric sliding tables, and in the horizontal direction deviation correction, the upper compensation assembly 331 of the compensation mechanism 33 can drive the testing clamping jaw 34 to move in the horizontal direction by controlling the left and right clamping jaws 331c to synchronously translate, eliminating the problems of low efficiency and positioning errors caused by manual operation.

[0062] Referring to Figures 1 to 4 The left clamping jaw 331b and the right clamping jaw 331c are provided with clamping grooves, and the two clamping grooves form a clamping position.

[0063] In this embodiment, the clamping groove refers to a concave structure arranged on the inner side of the clamping jaw, and the profile of the clamping groove is matched with the shape of the test clamping jaw 34. The clamping position refers to a space region formed by the combination of the two clamping grooves. The clamping position of different sizes can be formed by adjusting the distance between the two clamping grooves, and is used for accommodating and fixing the test clamping jaw 34.

[0064] Specifically, when the left clamping jaw 331b and the right clamping jaw 331c move towards each other under the drive of the first electric sliding table 331a, the side walls of the two clamping grooves are in contact with the surface of the test clamping jaw 34, forming a three-point clamping structure. The symmetrical distribution of the clamping grooves ensures that the test clamping jaw 34 is always at the geometric center of the clamping position during horizontal movement, avoiding the deviation caused by uneven clamping force. In the clamping state, the inclined surface of the clamping groove forms a self-locking effect with the test clamping jaw 34, preventing the test clamping jaw 34 from sliding axially during load transmission.

[0065] The scheme changes the contact mode from surface contact to line contact through the groove structure, which reduces the machining precision while improving the clamping stability. The guiding effect of the groove structure ensures that the compensation mechanism 33 only transmits horizontal driving force, avoiding the generation of additional torque interference, thereby improving the repeatability of the centering compensation action.

[0066] Referring to Figures 3 to 6 The base 31 is provided with a sliding groove 31a and an adjusting hole 31b communicating with the sliding groove 31a. One side of the base 31 facing the torque test module 20 is a front side, and the slot of the sliding groove 31a is located on the front side. The lower compensation assembly 332 includes a rotating rod 332a, a jacking rod 332b and a roller 332c. The rotating rod 332a is installed in the sliding groove 31a, and one end of the rotating rod 332a extends out of the slot of the sliding groove 31a. The jacking rod 332b is movably connected to the adjusting hole 31b and abuts against the end of the rotating rod 332a away from the slot of the sliding groove 31a. The roller 332c is sleeved on the end of the rotating rod 332a extending out of the slot of the sliding groove 31a. The roller 332c abuts against the test clamping jaw 34 to drive the test clamping jaw 34 to move in the vertical direction.

[0067] In this embodiment, the sliding groove 31a refers to a linear guide structure provided inside the base 31, which can be implemented as a rectangular cross-section groove. Its opening is located on the front of the base 31 to form the installation path of the rotating rod 332a. The adjusting hole 31b refers to a through-hole structure communicating with the sliding groove 31a, which can be implemented as a stepped hole, used to constrain the movement trajectory of the lifting rod 332b. The rotating rod 332a refers to a transmission component with a cylindrical structure, which can be implemented as a stainless steel shaft, with one end extending to the outside of the base 31 to form the mounting position of the roller 332c. The lifting rod 332b refers to a columnar pushing component, which can be implemented as a hard alloy material, with its end forming an inclined contact with the rotating rod 332a to transmit axial displacement. The roller 332c refers to a rotating component with a flange on its outer circumference, which can be implemented as a polyurethane-coated steel core structure, transmitting vertical displacement through rolling contact with the test gripper 34.

[0068] Specifically, when the vertical position of the test gripper 34 needs to be adjusted, the rotating rod 332a rotates around its axis within the sliding groove 31a. The end of the rod furthest from the groove opening is raised or lowered by the lifting rod 332b, causing the end of the rotating rod 332a extending out of the sliding groove 31a to rise or fall slightly. The displacement of the lifting rod 332b is controlled by the rotation angle, thereby changing the vertical position of the roller 332c. The roller 332c is fitted onto the end of the rotating rod 332a extending out of the groove, and its outer edge remains in contact with the test gripper 34. When the roller 332c rotates with the rotating rod 332a and generates vertical displacement, it pushes the test gripper 34 to move synchronously through rolling friction. This structure achieves micron-level displacement adjustment through mechanical linkage. The connection between the adjustment hole 31b and the sliding groove 31a double-constrains the movement trajectory of the lifting rod 332b, ensuring the linear accuracy of displacement transmission.

[0069] This design employs a combination of a rotating rod 332a and a lifting rod 332b to push and transform the rotational motion of the lifting rod 332b into a precise linear displacement of the rotating rod 332a in the vertical direction. Compared to traditional hydraulic lifting devices, the rolling contact between the roller 332c and the test gripper 34 effectively reduces motion resistance and avoids adjustment lag.

[0070] Through the above technical solution, this application can realize stepless precision adjustment of the test gripper 34 in the vertical direction to ensure accurate alignment between the load end 22 and the drive end 21; the mechanical compensation mechanism is directly integrated inside the base 31, and can complete the alignment compensation without relying on external measuring tools, which significantly improves the automation level and debugging efficiency of the torque testing equipment.

[0071] Please see Figures 3 to 6The base 31 is further provided with a mounting hole 31c in communication with the adjusting hole 31b, the side surface of the base 31 is adjacent to the front surface, and the mounting hole 31c extends to the side surface.

[0072] In the embodiment, the mounting hole 31c is a through hole extending along the side surface of the base 31, which can be implemented in the form of a stepped hole or a threaded hole, and the axis of the mounting hole 31c is in spatial intersection with the adjusting hole 31b, so that the mounting hole 31c is convenient for assembly from the side surface. The fixed rod 332d is a rigid member with an end surface contact function, which can be implemented in the form of a threaded adjusting bolt or a plunger structure. After being screwed into the mounting hole 31c, the end of the fixed rod 332d is in surface contact with the rotating rod 332a, thereby forming mechanical limiting of the axial displacement of the rotating rod 332a.

[0073] Specifically, after the jacking rod 332b is positioned in the adjusting hole 31b, the fixed rod 332d is inserted into the mounting hole 31c from the side surface of the base 31, and the end of the fixed rod 332d is in abutting contact with the rod body of the rotating rod 332a. At this time, the axial restraining force of the fixed rod 332d can offset the vibration or load impact of the rotating rod 332a during the test, so as to prevent the axial displacement of the rotating rod 332a. The mounting hole 31c extending along the side surface makes it unnecessary for the operator to maintain the equipment from the front surface, and the operator can directly complete the assembly and disassembly of the fixed rod 332d in the side surface space.

[0074] The fixed rod 332d is independently arranged and rigidly abuts against the rotating rod 332a, so as to enhance the anti-vibration locking capability while maintaining the original adjustment accuracy, and the side surface operation mode avoids interference with the test area.

[0075] Through the above technical solution, the technical problem that the rotating rod 332a is prone to displacement during dynamic testing is effectively solved. The rigid abutting constraint of the fixed rod 332d and the rotating rod 332a ensures the positioning stability of the test clamping jaw 34 when moving in the vertical direction, and the side surface mounting structure improves the operability of equipment maintenance and reduces the risk of accidental touch during debugging.

[0076] Please refer to Figures 1 to 4 The compensation mechanism 33 further includes two lower compensation assemblies 332, which are arranged in a left-right manner on the front surface and are in abutting contact with the test clamping jaw 34.

[0077] In this embodiment, the left-right arrangement means that the two lower compensation components 332 are symmetrically distributed in the horizontal direction on the front of the base 31. The balanced adjustment force is formed by the double-sided support, avoiding the deflection of the gripper caused by the application of force on one side.

[0078] Specifically, two lower compensation components 332 are respectively installed on the left and right sides of the front of the base 31, with their rollers 332c simultaneously abutting the corresponding positions of the test grippers 34. When it is necessary to adjust the vertical position of the test grippers 34, the two lower compensation components 332 move synchronously, and the rotating rod 332a is pushed up and down in the sliding groove 31a by the lifting rod 332b, so that the rotating rod 332a drives the rollers 332c to apply a vertical thrust to the test grippers 34. The left and right arranged double lower compensation components 332 can be controlled independently or in conjunction to ensure that the test grippers 34 maintain linear movement in the vertical plane and avoid tilting or jamming caused by unilateral force application.

[0079] The symmetrically arranged double lower compensation components 332 apply force synchronously from both sides, ensuring that the test gripper 34 remains in a balanced state during vertical movement, significantly reducing the generation of additional bending moment and improving the stability of the adjustment process.

[0080] Please see Figures 1 to 4 This application further proposes a torque testing device including a base 31, the base 31 having an assembly groove, the assembly groove being spaced apart from the compensation mechanism 33; an alignment detection mechanism 32 including a pressure sensor 321, the pressure sensor 321 being installed in the assembly groove and connected to a test gripper 34, used to detect the pressure data of the test gripper 34 to determine whether the test gripper 34 is offset; the alignment detection mechanism 32 also includes a connecting rod 322, the two ends of the connecting rod 322 being connected to the pressure sensor 321 and the test gripper 34 respectively.

[0081] In this embodiment, the assembly groove refers to a recessed structure on the base 31 for accommodating the pressure sensor 321. Specifically, it can be achieved by machining a groove with a regular geometric shape. Its position is spaced from the compensation mechanism 33 to avoid motion interference. The pressure sensor 321 is a detection element that converts mechanical pressure signals into electrical signals. Specifically, it can be implemented using a piezoelectric or strain gauge sensor, and the offset state is determined by measuring the pressure change transmitted by the test gripper 34. The connecting rod 322 is a rigid connecting member used to transmit mechanical loads. Specifically, it can be implemented using a metal rod or a high-strength composite material rod, with its two ends fixedly connected to the pressure sensor 321 and the test gripper 34 respectively to ensure the reliability of signal transmission.

[0082] Specifically, the pressure sensor 321 is installed in the assembly groove of the base 31 and rigidly connected with the test clamp jaw 34 through the connecting rod 322. When the test clamp jaw 34 is offset due to the misalignment of the load end 22 and the driving end 21, the connecting rod 322 transmits the pressure change applied on the test clamp jaw 34 to the pressure sensor 321. The pressure sensor 321 collects pressure data in real time, and determines whether the test clamp jaw 34 is offset by analyzing the pressure distribution characteristics. For example, when the pressure data exceeds the preset threshold range, the compensation mechanism 33 can be triggered to automatically correct the position of the test clamp jaw 34.

[0083] The combination of the pressure sensor 321 and the connecting rod 322 realizes real-time online monitoring of the offset state of the test clamp jaw 34, and the data collection and determination can be completed without interrupting the test process, significantly reducing the manual intervention link. At the same time, the operation process of the traditional alignment debugging is simplified, and the automation level and test efficiency of the torque test equipment are improved.

[0084] Please refer to Figures 1 to 4 The test clamp jaw 34 further includes an installation ring 341, two elastic members 342, and two clamping members 343. The installation ring 341 is connected with the compensation mechanism 33 and the alignment detection mechanism 32. The two elastic members 342 are symmetrically arranged and connected to the inner wall of the installation ring 341. Each clamping member 343 is connected with an elastic member 342 to enable the clamping member 343 to stretch and contract relative to the installation ring 341.

[0085] In the embodiment, the installation ring 341 refers to a ring-shaped base for bearing the clamping structure, which can be implemented by a metal ring member. The outer wall of the installation ring 341 is provided with a connecting interface for forming a mechanical connection with the moving part of the compensation mechanism 33 and the sensor of the alignment detection mechanism 32. The elastic member 342 refers to a connecting member with elastic deformation capability, which can be implemented by a spiral spring or an elastic metal sheet. The symmetrically arranged elastic members 342 can generate balanced elastic force during clamping to maintain clamping stability. The clamping member 343 refers to a clamping member directly contacting the measured load end 22, which can be implemented by a metal clamping block with anti-slip patterns. The self-adaptive control of clamping force is realized by the stretching and contraction adjustment of the elastic member 342.

[0086] Specifically, when the load end 22 needs to be clamped, the two symmetrically arranged clamping pieces 343 are retracted to the center position under the push of the elastic piece 342, forming a stable three-point contact clamping structure. The mounting ring 341 acts as a rigid carrier to transmit the displacement amount applied by the compensation mechanism 33 to the clamping piece 343, while feeding the clamping pressure data collected by the centering detection mechanism 32 to the control system through the connecting rod 322. The symmetric arrangement of the elastic piece 342 allows the radial forces generated during clamping to cancel each other out, avoiding clamping deviation caused by unilateral force. The telescopic stroke of the clamping piece 343 is determined by the deformation amount of the elastic piece 342, which can automatically adjust the clamping distance when different diameter load ends 22 are connected.

[0087] In some embodiments, the elastic piece 342 can adopt a pre-pressed spring structure, for example, a spring fixing groove is provided on the inner wall of the mounting ring 341, and the two ends of the spring are respectively embedded in the groove and the back of the clamping piece 343. The clamping piece 343 can be designed as an arc-shaped contact surface, for example, a V-shaped anti-slip pattern is processed on the clamping surface to increase the friction coefficient. The material of the mounting ring 341 can be selected as aluminum alloy, which takes into account the light weight and structural strength.

[0088] The present scheme combines the elastic piece 342 and the symmetric clamping piece 343 to make the clamping process have self-adaptive adjustment capability, automatically eliminating the additional bending moment caused by uneven clamping force when the centering adjustment is performed by the compensation mechanism 33, while adapting to the rapid clamping requirements of different specifications of the load end 22.

[0089] Through the above technical scheme, the present application realizes the dynamic self-adaptive adjustment capability of the clamping structure. When there is an installation deviation in the load end 22, the clamping piece 343 can automatically adjust the clamping position with the deformation of the elastic piece 342, effectively eliminating the local stress concentration caused by poor centering, and ensuring the stability of the torque transmission process. At the same time, the symmetrically distributed elastic piece 342 and clamping piece 343 form a bidirectional compensation mechanism to ensure uniform distribution of clamping force, avoid distortion of sensor signals caused by unilateral overload, and improve the repeatability and accuracy of test data.

[0090] The above only describes exemplary embodiments of the present application, and does not limit the patent scope of the present application. Any equivalent structural transformation made by using the content of the present application specification and drawings, or direct / indirect application in other related technical fields is included in the patent protection scope of the present application.

Claims

1. A torque testing apparatus, characterized by, The torque testing device comprises: a base; a torque testing module installed on the base, the torque testing module having a driving end and a load end, the driving end being in transmission connection with the load end; and a centering compensation module, the centering compensation module comprising a base, a centering detection mechanism, a compensation mechanism and a testing jaw, the base being installed on the base and being arranged in interval with the torque testing module; the centering detection mechanism and the compensation mechanism are both installed on the base, the centering detection mechanism and the compensation mechanism being respectively connected with one end of the testing jaw, the centering detection mechanism being used for detecting the centering condition of the testing jaw, the compensation mechanism being used for driving the testing jaw to move relative to the base; the other end of the testing jaw being used for connecting with the load end to drive the load end to move and center with the driving end; the compensation mechanism comprising: an upper compensation assembly movably connected with the base and connected with the testing jaw, used for driving the testing jaw to move in horizontal direction; and a lower compensation assembly movably connected with the base and abutting against the testing jaw; and the lower compensation assembly being arranged adjacent to the upper compensation assembly, the lower compensation assembly being used for driving the testing jaw to move in vertical direction; the upper compensation assembly comprising: two first electric sliding platforms, the two first electric sliding platforms being installed on the base and being arranged in interval; a left jaw connected with the piston rod of one of the first electric sliding platforms; and a right jaw connected with the piston rod of the other first electric sliding platform; the two first electric sliding platforms being used for driving the left jaw and the right jaw to clamp the testing jaw, and driving the left jaw and the right jaw to move synchronously to drive the testing jaw to move in horizontal direction; the base being provided with a sliding groove and an adjusting hole in communication with the sliding groove, one side of the base facing the torque testing module being a front side, and the slot of the sliding groove being located on the front side; the lower compensation assembly comprising: a rotating rod installed in the sliding groove, one end of the rotating rod extending out of the slot of the sliding groove; a jacking rod movably connected with the adjusting hole and abutting against the end of the rotating rod away from the slot of the sliding groove; and a roller sleeved on the end of the rotating rod extending out of the slot of the sliding groove, the roller abutting against the testing jaw to drive the testing jaw to move in vertical direction; the lower compensation assembly achieving micron-level displacement adjustment through mechanical linkage.

2. The torque testing apparatus of claim 1, wherein, The left jaw and the right jaw are both provided with clamping grooves, the two clamping grooves enclosing a clamping position, and the testing jaw being clamped at the clamping position.

3. The torque testing apparatus of claim 1, wherein, The base is further provided with a mounting hole in communication with the adjusting hole, one side of the base adjacent to the front side being a side surface, and the mounting hole extending towards the side surface; the lower compensation assembly further comprising a fixing rod movably penetrating through the mounting hole, one end of the fixing rod abutting against the rotating rod to fix the position of the rotating rod in the sliding groove.

4. The torque testing apparatus of claim 1, wherein, The compensation mechanism comprises two lower compensation assemblies arranged in left and right on the front face and abutting against the test clamping jaw.

5. The torque testing apparatus of claim 1, wherein, The base is provided with an assembly groove which is spaced apart from the compensation mechanism; The centering detection mechanism comprises a pressure sensor which is installed in the assembly groove and connected with the test clamping jaw for detecting the pressure data of the test clamping jaw to determine whether the test clamping jaw is deviated.

6. The torque testing apparatus of claim 5, wherein, The centering detection mechanism further comprises a connecting rod which is connected with the pressure sensor and the test clamping jaw at two ends respectively.

7. The torque testing apparatus of claim 1, wherein, The test clamping jaw comprises: a mounting ring connected with the compensation mechanism and the centering detection mechanism; two elastic members connected with the inner wall of the mounting ring and arranged in symmetry; and two clamping members connected with the elastic members respectively so that the clamping members are telescopic relative to the mounting ring.

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