Torque and torsion angle measuring device and method

Abstract

The present invention discloses a torque and torsion angle measuring device and method, belonging to the field of measuring devices, comprising a test bench and a wrench, wherein the upper outer surface of the test bench is rotatably connected to a drive rod, the upper end of the drive rod is fixedly connected to a fixed sleeve, a compensation component is provided on the inner side of the fixed sleeve, the compensation component comprises a fixed rod fixedly connected to the upper end of the inner surface of the fixed sleeve, a movable sleeve is slidably connected to the outer surface of the fixed rod, a mounting groove 1 is provided on the outer surface of the movable sleeve, and a pin 1 is fixedly connected to the inner surface of the mounting groove 1. By providing the compensation component, the sleeve is clamped and fixed by an extrusion plate. By providing the compensation component, the displacement of the extrusion plate can reduce the influence of wrench wear on positioning measurement accuracy, reduce the problem of gap between the wrench and the measuring device, not only improve the clamping stability of the wrench, but also effectively improve the measurement accuracy of the wrench torque.

Description

Technical Field

[0001] The present invention relates to the field of measuring devices, and more particularly to a torque and torsion angle measuring device and method. Background Art

[0002] The torque wrench is an important torque tool designed based on the bending principle of beams, the bending principle of torsion bars, and the compression principle of coil springs. It features adjustable torque, high precision, and a variety of types. It is widely used in automotive manufacturing and maintenance, aerospace, machinery manufacturing, and other fields. To ensure the accuracy of the torque wrench, the torque of the torque wrench needs to be measured and calibrated regularly.

[0003] In the prior art, dedicated measurement devices are often used to improve the measurement and calibration accuracy of torque wrenches. For example, Chinese Patent Publication No. CN113390558B discloses an online measurement and calibration device for accumulated torque of an impact wrench. This device uses a microcontroller to collect torque and rotational angle signals, execute an algorithm program, calculate and display accumulated angular displacement and accumulated torque, and thus complete the measurement and calibration of the accumulated torque output by the controllable torque impact wrench.

[0004] Although the existing wrench torque measuring device can quickly measure the wrench torque during use, in actual application, the head of the torque wrench will be worn to a certain extent during long-term use. During measurement and calibration, the head of the torque wrench needs to be measured. At this time, the wear of the wrench head will cause a gap between it and the measuring device, which not only affects the measurement stability of the wrench torque, but also makes it easy for the wrench and the measuring device to slip, resulting in large errors in the torque measurement process, affecting the measurement accuracy. Summary of the Invention

[0005] In response to the problems existing in the prior art, the purpose of the present invention is to provide a torque and torsion angle measuring device and method. By setting a compensation component and clamping and fixing the sleeve through an extrusion plate, the compensation component can be set and the displacement of the extrusion plate can be used to reduce the influence of wrench wear on the positioning measurement accuracy, and reduce the problem of gap between the wrench and the measuring device. It can not only improve the clamping stability of the wrench, but also effectively improve the measurement accuracy of the wrench torque.

[0006] To solve the above problems, the present invention adopts the following technical solutions.

[0007] A torque and torsion angle measuring device includes a test bench and a wrench, wherein the outer surface of the upper end of the test bench is rotatably connected to a driving rod, the upper end of the driving rod is fixedly connected to a fixing sleeve, and a compensation component is provided on the inner side of the fixing sleeve;

[0008] The compensation component includes a fixed rod fixedly connected to the upper end of the inner surface of the fixed sleeve, the outer surface of the fixed rod is slidably connected to a movable sleeve, the outer surface of the movable sleeve is provided with a mounting groove 1, the inner surface of the mounting groove 1 is fixedly connected to a pin shaft 1, the outer surface of the pin shaft 1 is rotatably connected to a swing rod, the end of the swing rod away from the pin shaft 1 is rotatably connected to a hinge part, the swing rod is hinged to an extrusion plate through the hinge part, and the outer surface of the lower end of the extrusion plate is slidably connected to the upper end of the inner surface of the fixed sleeve.

[0009] Furthermore, the hinged portion includes a second pin shaft rotatably connected to the swing rod, a second mounting groove is provided on the outer surface of the extrusion plate close to the fixed rod, the second pin shaft is fixedly connected to the inner surface of the second mounting groove, the number of the extrusion plates and the swing rods are several groups and distributed in a ring array, a guide groove is provided at the lower end of the inner surface of the fixed sleeve, a guide block is slidably connected to the inner surface of the guide groove, and the outer surface of the upper end of the guide block is fixedly connected to the extrusion plate.

[0010] Furthermore, the outer surface of the lower end of the wrench is rotatably connected to a sleeve, and an extrusion assembly is provided on the inner side of the sleeve. The extrusion assembly includes a mounting sleeve fixedly connected to the outer surface of the lower end of the wrench, and a sliding groove is embedded on the outer surface of the lower end of the mounting sleeve. The inner surface of the sliding groove is slidably connected to a piston plate, and the outer surface of the lower end of the piston plate is fixedly connected to the extrusion sleeve.

[0011] Furthermore, the lower end of the extrusion sleeve passes through the outside of the slide groove, the outer surface of the upper end of the piston plate is fixedly connected to a spring 1, the extrusion sleeve is located directly above the movable sleeve, the piston plate is annular, and the outer surface of the upper end of the test bench is fixedly connected to a splint for clamping the wrench, and the splint is arc-shaped.

[0012] Furthermore, an expansion component is provided on the inner side of the fixed sleeve, and the expansion component includes a sac body 1 fixedly connected to the lower end of the inner surface of the fixed sleeve, and the sac body 1 is distributed in a circular ring shape on the outside of the fixed rod, and the outer surface of the upper end of the sac body 1 is fixedly connected to the lower end of the movable sleeve, and the outer surface of the sac body 1 is fixedly connected to the telescopic tube, and the inner side of the sac body 1 is provided with a spring 2.

[0013] Furthermore, the extrusion plate is embedded with a receiving groove on the side away from the swing rod, and the inner surface of the receiving groove is fixedly connected to the second capsule. The end of the telescopic tube away from the first capsule is connected to the inside of the second capsule. The inner surface of the receiving groove is slidably connected to a contact plate, and the outer surface of the contact plate is fixedly connected to the second capsule. The number of the second capsule and the contact plates are several groups and are distributed corresponding to the extrusion plates. The inner surface of the fixed sleeve is provided with an extrusion groove, and the inner side of the extrusion groove is slidably connected to a movable plate. The movable plate is arc-shaped and made of elastic material.

[0014] Furthermore, a cavity is embedded on the inner side of the test bench, and a test component is provided on the inner side of the cavity. The test component includes a servo motor fixedly connected to the lower end of the inner surface of the cavity, a torque sensor is fixedly connected to the output end of the servo motor, and the upper end of the torque sensor is fixedly connected to the drive rod. An operation screen is provided on the outer surface of the front end of the test bench.

[0015] Furthermore, the outer surface of the upper end of the test bench is fixedly connected to the outside of the fixed sleeve with a retaining ring, and a measuring component is provided on the inner side of the retaining ring. The measuring component includes a movable groove opened on the inner surface of the retaining ring, and the movable groove is in a circular shape. The outer surface of the fixed sleeve is fixedly connected to a pointing plate 1, and the inner side of the movable groove is slidably connected to a pointing plate 2, and the pointing plate 2 is located on the upper side of the pointing plate 1.

[0016] Furthermore, the movable grooves and the second pointing plate are in several groups and are distributed parallel to each other up and down. The outer surface of the second pointing plate is fixedly connected to a damping shaft, and the outer surface of the damping shaft is symmetrically connected to a paddle. The inner surface of the retaining ring is provided with a scale line 1, and the outer surface of the upper end of the test bench is located on the inner side of the retaining ring and is provided with a scale line 2.

[0017] A measurement method applicable to a torque and torsion angle measuring device comprises the following steps:

[0018] S1: Before testing, clamp the sleeve into the fixing sleeve and clamp the wrench body with the clamping plate;

[0019] S2: When the sleeve is clamped, the installation sleeve gradually moves downward, driving the lower end of the extrusion sleeve to contact the upper end of the movable sleeve, driving the movable sleeve to move downward synchronously, thereby driving the compensation component to start operation;

[0020] S3: The extrusion plate moves away from the fixed rod under the push of the swing rod, and the sleeve is fixed by the extrusion plate;

[0021] S4: The servo motor transmits torque to the drive rod through the torque sensor, which can measure the rotational torque of the casing;

[0022] S5: Push the contact plate outward from the inside of the receiving groove through the second capsule, so that the contact plate fits more closely with the inner surface of the sleeve;

[0023] S6: The wrench torque angle can be measured intuitively by comparing the positions of the first and second pointing plates with the first and second scale lines.

[0024] Compared with the prior art, the advantages of the present invention are:

[0025] (1) This solution uses a compensating component to clamp and fix the sleeve using an extrusion plate. By setting up the compensating component, the displacement of the extrusion plate can reduce the influence of wrench wear on the positioning measurement accuracy and reduce the problem of gap between the wrench and the measuring device. It can not only improve the clamping stability of the wrench, but also effectively improve the measurement accuracy of the wrench torque.

[0026] (2) This solution increases the friction between the contact plate and the sleeve by setting an expansion component and utilizing the expansion of the bladder body 2. At the same time, the sleeve is squeezed on the outside by a plurality of sets of movable plates, which can further improve the clamping stability of the sleeve and the wrench and reduce the probability of slippage between the sleeve and the fixed sleeve, thereby helping to reduce measurement errors and improve torque measurement accuracy.

[0027] (3) This solution sets up a measuring component and uses several groups of pointing plates 2 to count the number of rotations of the torsion angle. At the same time, the wrench torsion angle can be measured according to the position of the pointing plate 2 and the scale line 2, thereby improving the convenience and functionality of the torsion angle measurement. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 The overall structure of the present invention is shown in FIG. Figure 1 ;

[0029] Figure 2 It is a top view of the overall structure of the present invention;

[0030] Figure 3 The overall structure of the present invention is shown in FIG. Figure 2 ;

[0031] Figure 4 For the present invention Figure 2 Middle AA section view;

[0032] Figure 5 For the present invention Figure 2 Middle BB section view;

[0033] Figure 6 For the present invention Figure 5 Enlarged schematic diagram at point C in the middle;

[0034] Figure 7 For the present invention Figure 3 The enlarged schematic diagram of point D in the middle;

[0035] Figure 8 For the present invention Figure 4 The enlarged schematic diagram at E in the middle;

[0036] Figure 9 For the present invention Figure 4 The enlarged schematic diagram at F in the middle;

[0037] Figure 10 For the present invention Figure 5 Enlarged schematic diagram at point G in the middle.

[0038] Description of the numbers in the figure:

[0039] 11. Test bench; 12. Operation panel; 13. Retaining ring; 14. Scale line 1; 15. Wrench; 16. Clamp; 17. Casing; 18. Fixing sleeve; 19. Drive rod; 20. Torque sensor; 21. Servo motor; 22. Mounting sleeve; 23. Slide; 24. Spring 1; 25. Extrusion sleeve; 26. Fixing rod; 27. Movable sleeve; 28. Mounting slot 1; 29. Pin 1; 30. Swing rod; 31. Guide Slot; 32. Guide block; 33. Extrusion plate; 34. Mounting slot 2; 35. Pin shaft 2; 36. Capsule 1; 37. Spring 2; 38. Telescopic tube; 39. Capsule 2; 40. Contact plate; 41. Pointing plate 1; 42. Damping shaft; 43. Paddle; 44. Scale line 2; 45. Movable slot; 46. Piston plate; 47. Extrusion slot; 48. Movable plate; 49. Storage slot; 50. Cavity; 51. Pointing plate 2. DETAILED DESCRIPTION

[0040] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention; it is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0041] See also Figures 1 to 10 A torque and torsion angle measuring device includes a test bench 11 and a torque wrench 15. The outer surface of the upper end of the test bench 11 is rotatably connected to a drive rod 19. The upper end of the drive rod 19 is fixedly connected to a fixed sleeve 18. A compensation component is provided inside the fixed sleeve 18. The outer surface of the lower end of the torque wrench 15 is rotatably connected to a sleeve 17.

[0042] The compensation component includes a fixed rod 26 fixedly connected to the upper end of the inner surface of the fixed sleeve 18, and the outer surface of the fixed rod 26 is slidably connected to a movable sleeve 27. The outer surface of the movable sleeve 27 is provided with a mounting groove 28, and the inner surface of the mounting groove 28 is fixedly connected to a pin shaft 29. The outer surface of the pin shaft 29 is rotatably connected to a swing rod 30, and the swing rod 30 is rotatably connected to a hinge part at one end away from the pin shaft 29. The swing rod 30 is hinged to an extrusion plate 33 through the hinge part, and the outer surface of the lower end of the extrusion plate 33 is slidably connected to the upper end of the inner surface of the fixed sleeve 18.

[0043] The hinge portion includes a second pin shaft 35 rotatably connected to the swing rod 30, and a second mounting groove 34 is provided on the outer surface of the extrusion plate 33 near the fixed rod 26. The second pin shaft 35 is fixedly connected to the inner surface of the second mounting groove 34. The extrusion plates 33 and the swing rods 30 are in several groups and distributed in a ring array. A guide groove 31 is provided at the lower end of the inner surface of the fixed sleeve 18. A guide block 32 is slidably connected to the inner surface of the guide groove 31, and the outer surface of the upper end of the guide block 32 is fixedly connected to the extrusion plate 33.

[0044] By adopting the above technical solution, some spare parts need to accurately control the bolt tightening torque during the assembly process. At this time, a torque wrench 15 is usually used to apply appropriate torque to the bolt to tighten the bolt. After using the torque wrench 15 for a period of time, the torque and torsion angle of the torque wrench 15 need to be tested and verified to ensure the accuracy of the torque wrench 15. When testing the torque of the torque wrench 15, the sleeve 17 at the lower end of the torque wrench 15 is engaged and placed inside the fixed sleeve 18. The fixed sleeve 18 supports the movable sleeve 27 slidingly through the fixed rod 26. During the downward movement of the sleeve 17, the movable sleeve 27 drives the movable sleeve 27 to slide downward along the surface of the fixed rod 26. During the downward movement of the movable sleeve 27, the pin shaft 29 drives one end of the swing rod 30 to move downward synchronously. The movable sleeve 27 is fixedly supported by the pin shaft 29 through the installation slot 28. As the movable sleeve 27 gradually moves downward, the swing rod 30 is driven downward synchronously. The movable rod 30 will gradually flip into a horizontal state. At this time, the swing rod 30 will push the extrusion plate 33 through the second pin 35 and the second mounting groove 34. The fixed sleeve 18 slides and guides the guide block 32 through the guide groove 31, so that the extrusion plate 33 can slide linearly. The inner surface of the sleeve 17 has a hexagonal structure. The extrusion plate 33 will move to the side away from the fixed rod 26 under the pushing action of the swing rod 30. The extrusion plate 33 will fit tightly with the inner surface of the sleeve 17 during the movement, so that the sleeve 17 is clamped and fixed by the extrusion plate 33. By providing a compensation component, the displacement of the extrusion plate 33 can reduce the influence of the wear of the torque wrench 15 on the measurement accuracy, and reduce the probability of a gap between the torque wrench 15 and the measuring device. Not only can the clamping stability of the torque wrench 15 be improved, but also the measurement accuracy of the torque of the torque wrench 15 can be effectively improved.

[0045] like Figure 5 As shown, a cavity 50 is embedded inside the test bench 11, and a test component is provided inside the cavity 50. The test component includes a servo motor 21 fixedly connected to the lower end of the inner surface of the cavity 50, and a torque sensor 20 is fixedly connected to the output end of the servo motor 21. The upper end of the torque sensor 20 is fixedly connected to the driving rod 19, and an operation screen 12 is provided on the outer surface of the front end of the test bench 11.

[0046] By adopting the above technical solution, when the torque of the torque wrench 15 is tested, the servo motor 21 is started and operated, and the test bench 11 fixedly supports the servo motor 21 through the cavity 50. The servo motor 21 transmits torque to the drive rod 19 through the torque sensor 20, and the fixed sleeve 18 is driven to rotate by the drive rod 19. The fixed sleeve 18 is engaged and fixed to the sleeve 17 on the lower side of the torque wrench 15 through the compensation component, thereby driving the sleeve 17 to rotate through the fixed sleeve 18. The torque sensor 20 can measure the rotational torque of the sleeve 17. The operation screen 12 on the surface of the test bench 11 is convenient for the operator to operate and observe.

[0047] like Figure 1 and Figure 6 As shown, an extrusion assembly is provided on the inner side of the sleeve 17, and the extrusion assembly includes a mounting sleeve 22 fixedly connected to the outer surface of the lower end of the torque wrench 15, and a slide groove 23 is embedded in the lower end surface of the mounting sleeve 22. The inner surface of the slide groove 23 is slidably connected to the piston plate 46, and the outer surface of the lower end of the piston plate 46 is fixedly connected to the extrusion sleeve 25.

[0048] The lower end of the extrusion sleeve 25 passes through the outside of the slide groove 23, and the outer surface of the upper end of the piston plate 46 is fixedly connected to the spring 1 24. The extrusion sleeve 25 is located directly above the movable sleeve 27. The piston plate 46 is annular. The outer surface of the upper end of the test bench 11 is fixedly connected to the clamping plate 16 for clamping the torque wrench 15, and the clamping plate 16 is arc-shaped.

[0049] When the torque wrench 15 is in the process of moving downward and engaging, the mounting sleeve 22 inside the sleeve 17 will be driven to move synchronously, and the mounting sleeve 22 will slide and support the piston plate 46 through the slide groove 23, and the piston plate 46 will pull and support the extrusion sleeve 25. As the mounting sleeve 22 gradually moves downward, the lower end of the extrusion sleeve 25 will contact the upper end of the movable sleeve 27. At this time, the extrusion sleeve 25 will push the movable sleeve 27 downward synchronously, and the fixing rod 26 will be located inside the mounting sleeve 22, thereby driving the compensation component to start operation. During the continuous downward movement of the extrusion sleeve 25, under the resistance of the movable sleeve 27, the piston plate 46 inside the slide groove 23 will move upward and squeeze the spring 1 24. When the extrusion sleeve 25 is out of contact with the movable sleeve 27, the extrusion sleeve 25 will move in the opposite direction and reset under the elastic force of the spring 1 24, and the test bench 11 clamps and fixes the handle of the torque wrench 15 through the elastic force of the clamping plate 16.

[0050] like Figure 5 、 Figure 8 and Figure 9As shown, an expansion component is provided on the inner side of the fixed sleeve 18, and the expansion component includes a sac 1 36 fixedly connected to the lower end of the inner surface of the fixed sleeve 18. The sac 1 36 is distributed in a circular ring shape on the outside of the fixed rod 26. The outer surface of the upper end of the sac 1 36 is fixedly connected to the lower end of the movable sleeve 27. The outer surface of the sac 1 36 is fixedly connected to the telescopic tube 38, and the inner side of the sac 1 36 is provided with a spring 2 37.

[0051] The extrusion plate 33 is embedded with a receiving groove 49 on the side away from the swing rod 30, and the inner surface of the receiving groove 49 is fixedly connected to the second capsule 39. The end of the telescopic tube 38 away from the first capsule 36 is connected to the inside of the second capsule 39. The inner surface of the receiving groove 49 is slidably connected to the contact plate 40, and the outer surface of the contact plate 40 is fixedly connected to the second capsule 39. The number of the second capsule 39 and the contact plates 40 are several groups and are distributed corresponding to the extrusion plate 33. The inner surface of the fixed sleeve 18 is provided with an extrusion groove 47, and the inner side of the extrusion groove 47 is slidably connected to a movable plate 48. The movable plate 48 is arc-shaped and made of elastic material.

[0052] By adopting the above technical solution, in order to further improve the clamping stability of the extrusion plate 33 on the sleeve 17, an expansion component is set. When the movable sleeve 27 slides downward along the surface of the fixed rod 26, it will squeeze the capsule 1 36. At this time, the gas inside the capsule 1 36 will enter the interior of the capsule 2 39 through the telescopic tube 38 under the action of pressure. The extrusion plate 33 is fixed to the capsule 2 39 through the receiving groove 49. As the gas inside the capsule 2 39 is continuously injected, the volume of the capsule 2 39 will gradually expand, and the contact plate 40 will be pushed outward from the inside of the receiving groove 49 through the capsule 2 39, so that the contact plate 40 and the inner surface of the sleeve 17 are more closely fitted, and the sleeve 1 During the engagement process, its outer surface will slide in contact with the outer surface of the movable plate 48. The movable plate 48 will apply a certain extrusion force to the outside of the sleeve 17 under its own elastic action. The fixed sleeve 18 supports the movable plate 48 in a sliding manner through the extrusion groove 47. By providing an expansion component, the friction between the contact plate 40 and the sleeve 17 can be increased by the expansion of the bladder 39. At the same time, the sleeve 17 can be squeezed on the outside by several groups of movable plates 48, which can further improve the clamping stability of the sleeve 17 and the torque wrench 15, reduce the probability of slippage between the sleeve 17 and the fixed sleeve 18, and thus help to reduce measurement errors and improve torque measurement accuracy.

[0053] like Figure 1 、 Figure 3 and Figure 7As shown, the outer surface of the upper end of the test bench 11 is located outside the fixed sleeve 18 and is fixedly connected to a retaining ring 13. A measuring component is provided on the inner side of the retaining ring 13. The measuring component includes a movable groove 45 opened on the inner surface of the retaining ring 13. The movable groove 45 is annular. The outer surface of the fixed sleeve 18 is fixedly connected to a pointing plate 1 41. The inner side of the movable groove 45 is slidably connected to a pointing plate 2 51. The pointing plate 2 51 is located on the upper side of the pointing plate 1 41.

[0054] The movable grooves 45 and the second pointing plate 51 are arranged in several groups and are distributed parallel to each other. The outer surface of the second pointing plate 51 is fixedly connected to the damping shaft 42, and the outer surface of the damping shaft 42 is symmetrically connected to the paddle 43. The inner surface of the retaining ring 13 is provided with a scale line 14, and the outer surface of the upper end of the test bench 11 is located on the inner side of the retaining ring 13 and is provided with a scale line 2 44.

[0055] By adopting the above technical solution, the fixing sleeve 18 will drive the pointing plate 1 41 to rotate synchronously during the rotation process. According to the position of the pointing plate 1 41 and the scale line 1 14 and the scale line 2 44, the torque angle of the torque wrench 15 can be intuitively measured. When the torque angle is greater than 360 degrees, the operator rotates the paddle 43 with the damping shaft 42 as the fulcrum. The paddle 43 and the damping shaft 42 are connected by a damping rotation. Therefore, the paddle 43 will remain stationary in the absence of external force. At this time, when the pointing plate 1 41 rotates to the lower side of the pointing plate 2 51, the pointing plate 1 41 will drive the pointing plate 1 41 through the paddle 43. The pointing plate 51 is rotated, and the number of the paddles 43 is two groups symmetrically distributed on both sides of the pointing plate 51. The operator can rotate one group of paddles 43 to the lower side according to the rotation direction of the fixing sleeve 18. For example, when the fixing sleeve 18 rotates clockwise, the paddle 43 on the front side is rotated to the lower side so that the pointing plate 1 41 can drive the pointing plate 2 51 to rotate. By providing a plurality of groups of pointing plates 51, the number of rotations of the torsion angle can be counted. At the same time, the torsion angle of the torque wrench 15 can be measured according to the position of the pointing plate 51 and the reference scale line 44, thereby improving the convenience of torsion angle measurement.

[0056] A method for measuring a torque and torsion angle, comprising the following steps:

[0057] S1: Before testing, the sleeve 17 is clamped into the fixing sleeve 18, and the torque wrench 15 body is clamped and fixed by the clamping plate 16;

[0058] S2: When the sleeve 17 is clamped, the installation sleeve 22 gradually moves downward, driving the lower end of the extrusion sleeve 25 to contact the upper end of the movable sleeve 27, driving the movable sleeve 27 to move downward synchronously, thereby driving the compensation component to start operation;

[0059] S3: The extrusion plate 33 moves away from the fixing rod 26 under the pushing action of the swing rod 30, and the sleeve 17 is fixed by the extrusion plate 33;

[0060] S4: The servo motor 21 transmits the torque to the drive rod 19 through the torque sensor 20. The torque sensor 20 can measure the rotational torque of the sleeve 17.

[0061] S5: Push the contact plate 40 outward from the inside of the receiving groove 49 through the second capsule 39, so that the contact plate 40 fits more closely with the inner surface of the sleeve 17;

[0062] S6: The torque angle of the torque wrench 15 can be measured visually by comparing the positions of the first pointing plate 41 and the second pointing plate 51 with the first scale line 14 and the second scale line 44 .

[0063] The above description is merely a preferred embodiment of the present invention; however, the scope of protection of the present invention is not limited thereto. Any person skilled in the art who, within the technical scope disclosed by the present invention, makes equivalent substitutions or modifications based on the technical solutions and improved concepts of the present invention shall be covered by the scope of protection of the present invention.

Claims

1. A torque and torsion angle measuring device, comprising a test bench (11) and a wrench (15), characterized in that: The outer surface of the upper end of the test bench (11) is rotatably connected to a driving rod (19), the upper end of the driving rod (19) is fixedly connected to a fixing sleeve (18), and a compensation component is provided inside the fixing sleeve (18); The compensation component includes a fixed rod (26) fixedly connected to the upper end of the inner surface of the fixed sleeve (18), the outer surface of the fixed rod (26) is slidably connected to a movable sleeve (27), the outer surface of the movable sleeve (27) is provided with a mounting groove (28), the inner surface of the mounting groove (28) is fixedly connected to a pin shaft (29), the outer surface of the pin shaft (29) is rotatably connected to a swing rod (30), the end of the swing rod (30) away from the pin shaft (29) is rotatably connected to a hinge part, the swing rod (30) is hinged to an extrusion plate (33) through the hinge part, and the outer surface of the lower end of the extrusion plate (33) is slidably connected to the upper end of the inner surface of the fixed sleeve (18).

2. The torque and torsion angle measuring device according to claim 1, characterized in that: The hinge portion includes a second pin shaft (35) rotatably connected to the swing rod (30), a second mounting groove (34) is provided on the outer surface of the extrusion plate (33) near the fixed rod (26), and the second pin shaft (35) is fixedly connected to the inner surface of the second mounting groove (34). The number of the extrusion plates (33) and the swing rod (30) are both several groups and distributed in a ring array. A guide groove (31) is provided at the lower end of the inner surface of the fixed sleeve (18), and a guide block (32) is slidably connected to the inner surface of the guide groove (31). The outer surface of the upper end of the guide block (32) is fixedly connected to the extrusion plate (33).

3. The torque and torsion angle measuring device according to claim 2, characterized in that: The outer surface of the lower end of the wrench (15) is rotatably connected to a sleeve (17), and an extrusion assembly is provided inside the sleeve (17). The extrusion assembly includes a mounting sleeve (22) fixedly connected to the outer surface of the lower end of the wrench (15), and a sliding groove (23) is embedded in the outer surface of the lower end of the mounting sleeve (22). The inner surface of the sliding groove (23) is slidably connected to a piston plate (46), and the outer surface of the lower end of the piston plate (46) is fixedly connected to the extrusion sleeve (25).

4. The torque and torsion angle measuring device according to claim 3, characterized in that: The lower end of the extrusion sleeve (25) extends through the outside of the slide groove (23), and the outer surface of the upper end of the piston plate (46) is fixedly connected to a spring 1 (24). The extrusion sleeve (25) is located directly above the movable sleeve (27). The piston plate (46) is annular. The outer surface of the upper end of the test bench (11) is fixedly connected to a clamping plate (16) for clamping the wrench (15), and the clamping plate (16) is arc-shaped.

5. The torque and torsion angle measuring device according to claim 4, characterized in that: An expansion assembly is provided on the inner side of the fixed sleeve (18), and the expansion assembly includes a capsule (36) fixedly connected to the lower end of the inner surface of the fixed sleeve (18), and the capsule (36) is distributed in a circular ring shape on the outer side of the fixed rod (26). The outer surface of the upper end of the capsule (36) is fixedly connected to the lower end of the movable sleeve (27), and the outer surface of the capsule (36) is fixedly connected to the telescopic tube (38), and the inner sleeve of the capsule (36) is provided with a spring (37).

6. The torque and torsion angle measuring device according to claim 5, characterized in that: The extrusion plate (33) is embedded with a receiving groove (49) on the side away from the swing rod (30), and the inner surface of the receiving groove (49) is fixedly connected to the second capsule (39). The end of the telescopic tube (38) away from the first capsule (36) is connected to the inside of the second capsule (39). The inner surface of the receiving groove (49) is slidably connected to the contact plate (40), and the outer surface of the contact plate (40) is fixedly connected to the second capsule (39). The number of the second capsule (39) and the contact plate (40) are both in several groups and are distributed corresponding to the extrusion plate (33). The inner surface of the fixed sleeve (18) is provided with an extrusion groove (47), and the inner side of the extrusion groove (47) is slidably connected to the movable plate (48), and the movable plate (48) is in an arc shape and is made of elastic material.

7. The torque and torsion angle measuring device according to claim 6, characterized in that: A cavity (50) is embedded in the inner side of the test bench (11), and a test assembly is provided inside the cavity (50). The test assembly includes a servo motor (21) fixedly connected to the lower end of the inner surface of the cavity (50), a torque sensor (20) is fixedly connected to the output end of the servo motor (21), and the upper end of the torque sensor (20) is fixedly connected to the driving rod (19). An operation screen (12) is provided on the outer surface of the front end of the test bench (11).

8. The torque and torsion angle measuring device according to claim 7, characterized in that: The outer surface of the upper end of the test bench (11) is located outside the fixed sleeve (18) and is fixedly connected to a retaining ring (13). A measuring component is provided inside the retaining ring (13). The measuring component includes a movable groove (45) opened on the inner surface of the retaining ring (13). The movable groove (45) is annular. The outer surface of the fixed sleeve (18) is fixedly connected to a pointing plate 1 (41). The inner side of the movable groove (45) is slidably connected to a pointing plate 2 (51). The pointing plate 2 (51) is located on the upper side of the pointing plate 1 (41).

9. The torque and torsion angle measuring device and method according to claim 8, characterized in that: The movable groove (45) and the second pointing plate (51) are provided in a plurality of groups and are vertically and horizontally distributed. The outer surface of the second pointing plate (51) is fixedly connected to a damping shaft (42). The outer surface of the damping shaft (42) is symmetrically rotatably connected to a paddle (43). The inner surface of the retaining ring (13) is provided with a scale line 1 (14). The outer surface of the upper end of the test bench (11) is located inside the retaining ring (13) and is provided with a scale line 2 (44).

10. A measurement method applicable to a torque and torsion angle measuring device according to claim 9, characterized in that: The steps include: S1: Before testing, the sleeve (17) is clamped into the interior of the fixing sleeve (18), and the main body of the wrench (15) is clamped and fixed by the clamping plate (16); S2: When the sleeve (17) is clamped, the mounting sleeve (22) gradually moves downward, driving the lower end of the extrusion sleeve (25) to contact the upper end of the movable sleeve (27), driving the movable sleeve (27) to move downward synchronously, thereby driving the compensation component to start operation; S3: The extrusion plate (33) moves to a side away from the fixed rod (26) under the pushing action of the swing rod (30), and the sleeve (17) is clamped and fixed by the extrusion plate (33); S4: The servo motor (21) transmits the torque to the drive rod (19) through the torque sensor (20), and the torque sensor (20) can measure the rotational torque of the sleeve (17); S5: Pushing the contact plate (40) outward from the inside of the receiving groove (49) through the second capsule (39), so that the contact plate (40) and the inner surface of the sleeve (17) fit more closely; S6: The torque angle of the wrench (15) can be measured visually by comparing the positions of the pointing plate 1 (41) and the pointing plate 2 (51) with the scale line 1 (14) and the scale line 2 (44).

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