Bearing torque testing tool

Abstract

The invention discloses a bearing torque testing tool, and belongs to the technical field of torque testing, the bearing torque testing tool comprises a testing bedplate, the upper side of the testing bedplate is provided with a torque detection assembly, one side of the torque detection assembly is provided with an inner fixing assembly, and the torque detection assembly is used for driving a bearing inner ring and the inner fixing assembly to rotate. An outer fixing assembly is arranged on the side, away from the torque detection assembly, of the inner fixing assembly, a material changing assembly is arranged in a containing groove in the testing table plate, the torque detection assembly drives the material changing assembly to rotate to switch a bearing to be tested, the material changing assembly comprises a plurality of temporary positioning assemblies, and the outer fixing assembly drives the temporary positioning assemblies and the inner fixing assembly to change the bearing to be tested. And the inner and outer rings of the bearing are fixed. Therefore, the bearings can be quickly switched, the time consumed for material changing can be shorter, the time for waiting for material changing can be greatly shortened, and the test efficiency is higher.

Description

Technical Field

[0001] The present invention relates to a bearing torque test tooling, belonging to the technical field of torque testing. Background Art

[0002] A bearing is an important component in contemporary mechanical equipment. Its main function is to support the mechanical rotating body, reduce the friction coefficient during its movement, and ensure its rotational accuracy. The bearing friction torque is an important performance index of the bearing. In practical applications, different types of bearings are combined into a shafting for use to meet the requirements of working under different load types and rotational speeds. Some bearings are used to bear axial forces, and some bearings are used to bear radial forces. By calculating or testing the friction torque of the bearing under the action of a force in a certain direction, the magnitude of the driving force required for the shafting can be obtained, and the mechanical transmission efficiency of the bearing can also be obtained. Therefore, during the bearing production period, in order to ensure the bearing quality, it is necessary to test the dynamic torque of the bearing.

[0003] For example, the Chinese utility model patent with the publication number CN222299008U discloses a bearing torque test tooling, belonging to the technical field of bearing seats, mainly including: a support assembly is installed on the bottom surface of the bearing seat. It is characterized in that: the support assembly includes: a bottom plate, which is fixedly installed on the bottom plate of the bearing seat; a sliding assembly, which includes two groups of slide rails fixedly installed on the bottom plate; two groups of sliders, which are fixedly installed on the slide rails; a sliding plate, which is fixedly installed between the two groups of sliders on the two groups of slide rails; two groups of cover plates, which are fixedly installed on the sliding plate; a heating assembly, which is fixedly installed on the cover plate. This application discloses a bearing torque test tooling. By setting a heating assembly, the bearing can be torque-tested according to different ambient temperatures...

[0004] The above-mentioned solution has the following deficiencies in actual use: This solution has no quick material-changing function. In actual use, when a bearing test is completed and the next bearing needs to be replaced, it is necessary to open the cover plate, then remove the current bearing, then install the next bearing, and then close the cover plate to complete the replacement, which will take a long time for material changing, resulting in low test efficiency. Therefore, we propose a bearing torque test tooling to solve the above problems. Summary of the Invention

[0005] The purpose of the present invention is to provide a bearing torque test tooling to solve the problems raised in the above background art.

[0006] In order to achieve the above purpose, the present invention adopts the following technical solutions: Compared with the prior art, the present invention provides a bearing torque test tooling, including a test table board. A plurality of support legs are fixedly arranged on the lower side of the test table board. A torque detection component is arranged on the upper side of the test table board. The torque detection component is used to detect the torque when the inner ring of the bearing rotates. A component for fixing the inner part is arranged on one side of the torque detection component. The torque detection component is used to drive the inner ring of the bearing and the component for fixing the inner part to rotate. A component for fixing the outer part is arranged on the side of the component for fixing the inner part away from the torque detection component. A material changing component is arranged in a receiving groove on the test table board. The torque detection component drives the material changing component to rotate to switch the bearing to be tested. The material changing component includes a plurality of temporary positioning components. The component for fixing the outer part drives the temporary positioning components and the component for fixing the inner part to realize the fixation of the inner and outer rings of the bearing.

[0007] Further, the torque detection component includes a torque sensor, a processing controller, a display, and an inverted U-shaped seat arranged above the test table board. A radial force generating component is arranged between the inverted U-shaped seat and the test table board. A motor is fixedly arranged on the upper side of the inverted U-shaped seat. The torque sensor is fixed on the upper side of the inverted U-shaped seat through a bracket. The shaft end of the motor is fixed on one end of the torque sensor. A connecting shaft is arranged above the inverted U-shaped seat. A shaft seat is rotatably arranged on the outer periphery of the connecting shaft. The shaft seat is fixed on the upper side of the inverted U-shaped seat. The output shaft of the motor is in transmission connection with the connecting shaft through a spur gear. A driving conical pulley is fixedly arranged on the outer periphery of the connecting shaft.

[0008] Further, the radial force generating component includes a sliding table seat slidably connected to the upper side of the test table board. An installation hole and two vertical holes are arranged on the upper side of the sliding table seat. A vertical rod is slidably arranged inside the vertical hole. The upper end of the vertical rod is fixed to the lower side of the top of the inverted U-shaped seat. A vertical hydraulic cylinder is fixedly arranged inside the installation hole. The shaft end of the vertical hydraulic cylinder is fixed with a first pressure sensor. The first pressure sensor is fixed to the lower side of the top of the inverted U-shaped seat. A second pressure sensor and a connecting frame are sequentially fixed on one side of the sliding table seat. The connecting frame is slidably connected to the upper side of the test table board.

[0009] Furthermore, the inner fixing component includes a combined shaft fixed to the other end of the torque sensor. The combined shaft has a structure where the two ends are round shafts and the middle part is a hexagonal shaft. A hexagonal sleeve frame is slidably connected to the outer periphery of the combined shaft. A triangular frame is fixed to one side of the hexagonal sleeve frame. A number of guiding holes are provided on the triangular frame. An inner fixing frame is slidably arranged inside the guiding holes. A reset tension spring is fixed between the outer wall of the triangular frame and one side of the inner fixing frame. A number of bevel frames are fixed to the outer periphery of the combined shaft. The inner fixing frame is provided with bevel grooves matching the bevel frames. The bevel frames are slidably connected in the bevel grooves. The end of the combined shaft away from the torque sensor is of a pointed structure. An adjusting sleeve is fixed to the outer wall of the triangular frame. A bevel blocking frame is slidably connected to the inside of the adjusting sleeve. The adjusting sleeve and the bevel blocking frame are detachably connected.

[0010] Furthermore, the outer fixing component includes a guiding rod. A guiding seat is slidably sleeved on the outer periphery of the guiding rod. The guiding seat is fixed to the upper side of the test table board. One end of the guiding rod is fixed with a moving plate. A through hole is provided on the moving plate. A horizontal hydraulic cylinder is fixed inside the through hole. The shaft end of the horizontal hydraulic cylinder is fixed to one side of the connecting frame. A number of active wedge-shaped frames are fixed to the side of the moving plate away from the guiding rod.

[0011] Furthermore, the material changing component further includes a material changing shaft and a transmission shaft. A number of supporting seats are rotatably arranged on the outer periphery of the material changing shaft. A connecting seat is rotatably arranged on the outer periphery of the transmission shaft. The supporting seats and the connecting seats are fixed to the upper side of the test table board. A rotation assisting component is provided between the material changing shaft and the test table board. A number of hollow frames are fixed to the outer periphery of the material changing shaft. The transmission shaft and the material changing shaft are connected by bevel gears. A driven conical wheel is fixed to the outer periphery of the transmission shaft. The driven conical wheel matches the active conical wheel. The driven conical wheel can be in contact with the active conical wheel for transmission connection.

[0012] Furthermore, the rotation assisting component includes a damping sleeve rotatably sleeved on the outer periphery of the material changing shaft. A fixing seat is fixed between the outer wall of the damping sleeve and the upper side of the test table board. A fixing frame is fixed to the upper side of the test table board. A rotary encoder is fixed on the fixing frame. The shaft end of the rotary encoder is fixed to one end of the material changing shaft.

[0013] Furthermore, the temporary positioning component includes an annular frame fixed to the hollow frame. A number of clamping holes are provided on the annular frame. A clamping frame is slidably connected in the clamping holes. One end of the clamping frame is fixed with a driven wedge-shaped block. The driven wedge-shaped block matches the active wedge-shaped frame. A clamping tension spring is fixed between the driven wedge-shaped block and the annular frame. A blocking block is fixed to one side of the clamping frame.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: (1) In the present invention, by providing a material changing component and a torque detection component, the present invention has the function of quick switching, can quickly switch bearings, and can make the time consumed for material changing shorter, greatly shortening the waiting time for material changing, thus having a high test efficiency.

[0015] (2) In the present invention, by providing an inner fixing component, an outer fixing component, a material changing component, and a temporary positioning component, the present invention has an automatic fixing function, can automatically fix the inner and outer rings of the bearing, has a fast disassembly and assembly speed, and can further improve the test efficiency.

[0016] (3) In the present invention, by providing a material changing component, a torque detection component, and a rotation assisting component, the present invention has a driving sharing function. A single motor can drive the rotation of the inner ring of the bearing for torque testing and can also drive the material changing component for automatic switching, enabling fewer driving elements in the present invention, resulting in a lower failure rate and being convenient for later maintenance.

[0017] (4) In the present invention, by providing an inner fixing component, an outer fixing component, and a torque detection component, the present invention has a function of driving multiple functions with one drive. A single horizontal hydraulic cylinder can achieve the fixation of the outer ring of the bearing, the fixation of the inner ring of the bearing, the translation of the torque detection component, and the generation of an axial force on the bearing during testing, enabling fewer driving elements in the present invention, resulting in a lower failure rate and being convenient for later maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0019] Figure 1 It is a schematic diagram of the overall front structure of the present invention; Figure 2 It is a schematic diagram of the overall back structure of the present invention; Figure 3 It is a schematic diagram of the overall side sectional structure of the present invention; Figure 4 As proposed in the present invention Figure 3 It is a schematic diagram of the partial enlarged structure of area A in Figure 5 As proposed in the present invention Figure 3 It is a schematic diagram of the partial enlarged structure of area B in Figure 6 It is a schematic diagram of the side sectional three-dimensional structure of the present invention; Figure 7 Schematic diagram of the overall side structure of the present invention; Figure 8 Proposed in the present invention Figure 7 Partial enlarged structural schematic diagram of area C in Figure 9 Partial structural schematic diagram of the back of the present invention; Figure 10 Partial exploded structural schematic diagram of the side of the present invention; Figure 11 Partial three-dimensional structural schematic diagram of the back of the present invention.

[0020] In the figure: 1. Test table board; 2. Torque sensor; 3. Inverted U-shaped seat; 4. Motor; 5. Connecting shaft; 6. Shaft seat; 7. Driving conical pulley; 8. Slide table seat; 9. Vertical rod; 10. Vertical hydraulic cylinder; 11. First pressure sensor; 12. Second pressure sensor; 13. Connecting frame; 14. Combined shaft; 15. Hexagonal sleeve frame; 16. Tripod; 17. Inner fixing frame; 18. Reset tension spring; 19. Hypotenuse frame; 20. Adjusting sleeve; 21. Hypotenuse blocking frame; 22. Guide rod; 23. Guide seat; 24. Moving plate; 25. Horizontal hydraulic cylinder; 26. Driving wedge-shaped frame; 27. Material-changing shaft; 28. Support seat; 29. Hollow frame; 30. Transmission shaft; 31. Connecting seat; 32. Driven conical pulley; 33. Damping sleeve; 34. Fixed seat; 35. Fixed frame; 36. Rotary encoder; 37. Ring-shaped frame; 38. Clamping frame; 39. Driven wedge-shaped block; 40. Clamping tension spring; 41. Block; 42. Bearing body. Detailed implementation manners

[0021] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a 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 those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0022] Please refer to Figures 1 - 11 , the present invention provides a technical solution: A bearing torque test tooling, including a test table board 1 and a bearing body 42. A plurality of support legs are fixedly provided on the lower side of the test table board 1. A receiving groove is provided on the test table board 1, and a material-changing assembly is provided in the receiving groove. As Figure 6 , Figure 8 shown, the material-changing assembly includes a material-changing shaft 27, a transmission shaft 30 and a plurality of temporary positioning assemblies. As Figure 11As shown in the figure, the temporary positioning assembly includes an annular frame 37 fixed on the hollow frame 29. A number of clamping holes are provided on the annular frame 37. A clamping frame 38 is slidably connected in the clamping holes. The bearing body 42 can be temporarily clamped between a plurality of clamping frames 38. One end of the clamping frame 38 is fixedly provided with a driven wedge block 39. A clamping tension spring 40 is fixedly arranged between the driven wedge block 39 and the annular frame 37. The clamping tension spring 40 can provide a clamping force for the clamping frame 38 to clamp the bearing body 42. A stop block 41 is fixedly arranged on one side of the clamping frame 38. The stop block 41 can prevent the bearing body 42 from falling off.

[0023] In order to shorten the refueling time and improve the test efficiency, during the use of the present invention, when torque testing of the bearing body 42 is required, the bearing body 42 to be tested needs to be installed on the temporary positioning assembly first. The installation position of the bearing body 42 is as Figure 11 shown. The bearing body 42 is clamped between a plurality of clamping frames 38. At this time, the bearing body 42 will not fall off due to the action of the clamping tension spring 40, and can achieve the purpose of temporary clamping. By setting a plurality of temporary positioning assemblies, the bearing body 42 can be installed in advance. During the testing of one bearing body 42, the tested bearing body 42 can be replaced. After the testing is completed, the bearing body 42 installed in advance can be quickly switched to the testing position, so that there is no need to wait for a long refueling time, and thus the test efficiency can be improved.

[0024] In order to drive the rotation of the inner ring of the bearing and perform dynamic torque testing on the bearing, as Figure 5 、 Figure 9 、 Figure 10 shown, a fixed-inner component is provided on one side of the torque detection component. The torque detection component is used to drive the rotation of the inner ring of the bearing and the fixed-inner component. The fixed-inner component includes a combined shaft 14 fixed on one end of the torque sensor 2. The combined shaft 14 has a structure with round shafts at both ends and a hexagonal shaft in the middle. A hexagonal sleeve frame 15 is slidably connected to the outer periphery of the combined shaft 14. The hexagonal sleeve frame 15 is slidably sleeved on the middle hexagonal shaft of the combined shaft 14. A triangular frame 16 is fixedly arranged on one side of the hexagonal sleeve frame 15. When fixing the inner ring of the bearing body 42, it is necessary to make the fixed-inner component close to the bearing body 42. In order to stop the triangular frame 16 after it reaches the appropriate position, an adjusting sleeve 20 is fixedly arranged on the outer wall of the triangular frame 16. A hypotenuse stop frame 21 is slidably connected to the inner side of the adjusting sleeve 20. During the process of the fixed-inner component approaching the bearing body 42, when the hypotenuse stop frame 21 contacts the inner ring of the bearing, the triangular frame 16, the hypotenuse stop frame 21 and the adjusting sleeve 20 will stop moving. In order to be applicable to inner rings of various sizes of bearings, the adjusting sleeve 20 and the hypotenuse stop frame 21 are detachably connected. The adjusting sleeve 20 and the hypotenuse stop frame 21 are detachably connected by bolt locking, so that the position of the hypotenuse stop frame 21 can be adjusted according to the size of the inner ring of the bearing, and thus it has strong versatility.

[0025] In order to be able to fix the inner ring of the bearing, as Figure 5 , Figure 9 , Figure 10 shown, a number of guide holes are provided on the tripod 16, and an inner fixing frame 17 is slidably arranged inside the guide holes. The inner fixing frame 17 is of a Z-shaped structure. A return spring 18 is fixedly arranged between one side of the inner fixing frame 17 and the outer wall of the tripod 16. The return spring 18 can enable the multiple inner fixing frames 17 to automatically move closer to each other and reset when the combined shaft 14 moves away from the bearing body 42. A number of bevel frames 19 are fixedly arranged on the outer periphery of the combined shaft 14. The number of the inner fixing frames 17 and the bevel frames 19 is the same and they are both arranged in a circumferential equal division. The inner fixing frame 17 is provided with an inclined groove matching the bevel frame 19, and the bevel frame 19 is slidably connected in the inclined groove. One end of the combined shaft 14 away from the torque sensor 2 is of a pointed structure. Because when fixing the inner ring of the bearing body 42, it is necessary to make the inner fixing assembly close to the bearing body 42. During the period when the inner fixing assembly approaches the bearing body 42, when the bevel stop 21 contacts the inner ring of the bearing, the tripod 16, the bevel stop 21 and the adjusting sleeve 20 will stop moving, and then the combined shaft 14 continues to approach the bearing body 42. At this time, the multiple inner fixing frames 17 can be made to move away from each other and disperse through the bevel frame 19, so that the inner ring of the bearing can be tensioned and fixed by the multiple inner fixing frames 17.

[0026] In order to fix the outer ring of the bearing during the test, as Figure 1 , Figure 3 , Figure 7 , Figure 11As shown, on the side of the inner fixing component away from the torque detection component, there is an outer fixing component. The temporary positioning component is located between the inner fixing component and the outer fixing component. The outer fixing component includes a guide rod 22. A guide seat 23 is slidably sleeved on the outer periphery of the guide rod 22. The guide seat 23 is fixed on the upper side of the test table board 1. One end of the guide rod 22 is fixedly provided with a moving plate 24. The moving plate 24 is slidably connected to the upper side of the test table board 1. By driving the temporary positioning component and the inner fixing component through the outer fixing component, the fixation of the inner and outer rings of the bearing is realized. Specifically: there is a through hole on the moving plate 24. A horizontal hydraulic cylinder 25 is fixedly arranged in the through hole. The shaft end of the horizontal hydraulic cylinder 25 is fixed on one side of the connecting frame 13. On the side of the moving plate 24 away from the guide rod 22, a number of active wedge-shaped frames 26 are fixedly arranged. The driven wedge-shaped blocks 39 match the active wedge-shaped frames 26. The active wedge-shaped frames 26 can be slidably connected to the driven wedge-shaped blocks 39 through contact. The number of the active wedge-shaped frames 26 and the driven wedge-shaped blocks 39 is the same. The active wedge-shaped frames 26 and the driven wedge-shaped blocks 39 are both arranged in a circumferential equidistant manner. When performing torque testing on the bearing, it is necessary to fix the inner and outer rings of the bearing. When it is necessary to fix the inner and outer rings of the bearing, it is necessary to control the horizontal hydraulic cylinder 25 to retract. When the horizontal hydraulic cylinder 25 retracts, the outer fixing component and the inner fixing component can be made to approach each other and approach the bearing body 42 at the same time. When the outer fixing component approaches the bearing body 42, the active wedge-shaped frames 26 will automatically approach the driven wedge-shaped blocks 39. When all the active wedge-shaped frames 26 come into contact with the driven wedge-shaped blocks 39, the axis of the bearing can be made the same as the axis of the combined shaft 14, realizing automatic centering. It can ensure that when fixing bearings of different sizes, after the outer ring of the bearing is fixed, the axis of the bearing is in the same position, so that it can be applicable to bearings of various sizes. At this time, the moving plate 24 will stop moving. Then the horizontal hydraulic cylinder 25 continues to retract, which can drive the inner fixing component to fix the inner ring of the bearing. Moreover, by controlling the retraction force of the horizontal hydraulic cylinder 25, the axial force received by the bearing can be controlled, and further the axial force received by the bearing during testing can be adjusted, simulating the situation of the bearing in actual use, thus realizing one drive for multiple movements.

[0027] In order to be able to test the dynamic torque of the bearing, such as Figure 1 、 Figure 2 、 Figure 4 、 Figure 8 、 Figure 9As shown in the figure, a torque detection component is provided on the upper side of the test table board 1. The torque detection component is used to detect the torque when the inner ring of the bearing rotates. The torque detection component includes a torque sensor 2, a processing controller, a display, and an inverted U-shaped seat 3 arranged above the test table board 1. A motor 4 is fixed on the upper side of the inverted U-shaped seat 3. The torque sensor 2 is fixed on the upper side of the inverted U-shaped seat 3 through a bracket. The shaft end of the motor 4 is fixed on the other end of the torque sensor 2. The processing controller is externally connected to a power source through a wire. The torque sensor 2, the display, and the motor 4 are all electrically connected to the processing controller through wires. When the inner and outer rings of the bearing are fixed and the dynamic torque of the bearing needs to be tested, the motor 4 needs to be controlled to rotate through the processing controller. When the motor 4 rotates, it will drive the shaft of the torque sensor 2, the inner fixing component, and the inner ring of the bearing to rotate. When the shaft of the torque sensor 2 rotates, the torque at the current rotation can be measured, and then the dynamic torque of the bearing can be calculated, so as to realize the test of the bearing torque. Then, the signal is transmitted to the display through the processing controller, and the numerical information can be displayed on the display.

[0028] In order to apply a radial force to the bearing when testing the bearing to simulate the actual use situation of the bearing, such as Figure 4As shown in the figure, a radial force generating component is provided between the inverted U-shaped seat 3 and the test bench plate 1. The radial force generating component includes a slide seat 8 slidably connected to the upper side of the test bench plate 1. An installation hole and two vertical holes are provided on the upper side of the slide seat 8. A vertical rod 9 is slidably arranged inside the vertical hole. The upper end of the vertical rod 9 is fixed to the lower side of the top of the inverted U-shaped seat 3. A vertical hydraulic cylinder 10 is fixedly arranged inside the installation hole. The vertical hydraulic cylinder 10 and the horizontal hydraulic cylinder 25 are both externally connected to a solenoid valve through an oil pipe. The solenoid valve is electrically connected to the processing controller through a wire. A first pressure sensor 11 is fixed to the shaft end of the vertical hydraulic cylinder 10. The first pressure sensor 11 is fixed to the lower side of the top of the inverted U-shaped seat 3. When a radial force needs to be applied to the bearing, the vertical hydraulic cylinder 10 can be controlled to extend to generate a force. At this time, the force generated by the extension of the vertical hydraulic cylinder 10 will be transmitted to the inner ring of the bearing through the inverted U-shaped seat 3, the motor 4, the bracket, the torque sensor 2 and the internal fixing component. At this time, the bearing will be subjected to a radial force, and the first pressure sensor 11 can be used to assist in controlling the radial force received by the bearing. A second pressure sensor 12 and a connecting frame 13 are sequentially fixed to one side of the slide seat 8. The connecting frame 13 is slidably connected to the upper side of the test bench plate 1. The second pressure sensor 12 can assist in controlling the axial force received by the bearing. The first pressure sensor 11 and the second pressure sensor 12 are both electrically connected to the processing controller through wires. The principle is that the first pressure sensor 11 and the second pressure sensor 12 transmit the received pressure to the processing controller, and the processing controller controls the extension or retraction force of the vertical hydraulic cylinder 10 and the horizontal hydraulic cylinder 25 through the solenoid valve, so as to control the radial force and axial force received by the bearing, and can meet various usage requirements.

[0029] In order to be able to quickly and automatically replace the bearing after testing one bearing, such as Figures 7 - 9As shown in the figure, a connecting shaft 5 is provided above the inverted U-shaped seat 3. A shaft seat 6 is rotatably provided on the outer periphery of the connecting shaft 5. The shaft seat 6 is fixed on the upper side of the inverted U-shaped seat 3. The output shaft of the motor 4 is connected to the connecting shaft 5 through a spur gear drive. A driving conical wheel 7 is fixedly provided on the outer periphery of the connecting shaft 5. A plurality of support seats 28 are rotatably provided on the outer periphery of the material changing shaft 27. A connecting seat 31 is rotatably provided on the outer periphery of the transmission shaft 30. The support seats 28 and the connecting seat 31 are fixed on the upper side of the test bench plate 1. A plurality of hollow frames 29 are fixedly provided on the outer periphery of the material changing shaft 27. The hollow frames 29 are arranged in a circumferential equidistant manner. The number of the hollow frames 29 is the same as that of the temporary positioning components. The transmission shaft 30 is perpendicular to the material changing shaft 27. The transmission shaft 30 is perpendicular to the connecting shaft 5. The transmission shaft 30 is connected to the material changing shaft 27 through a bevel gear drive. The material changing component is driven to rotate by the torque detection component to switch the bearing to be tested. Specifically, a driven conical wheel 32 is fixedly provided on the outer periphery of the transmission shaft 30. The driven conical wheel 32 is matched with the driving conical wheel 7. The driven conical wheel 32 can be in contact with the driving conical wheel 7 for transmission connection. After a bearing test is completed, it is necessary to control the horizontal hydraulic cylinder 25 to extend. When the horizontal hydraulic cylinder 25 is fully extended, the moving plate 24 will be blocked by the guide seat 23 and cannot move. At the same time, the driving conical wheel 7 will also be in close contact with the driven conical wheel 32. Then, the processing controller is used to control the motor 4 to rotate. When the motor 4 rotates, it will drive the connecting shaft 5 and the driving conical wheel 7 to rotate through the spur gear. The driving conical wheel 7 can drive the driven conical wheel 32 and the transmission shaft 30 to rotate through friction. The transmission shaft 30 will drive the material changing shaft 27, the temporary positioning component and the bearing to rotate through the bevel gear, so as to realize automatic switching and have a relatively fast replacement speed.

[0030] In order to accurately ensure the number of rotation turns of the material changing shaft 27 during material changing, as Figure 6 shown, a rotation assisting component is provided between the material changing shaft 27 and the test bench plate 1. The rotation assisting component includes a damping sleeve 33 rotatably sleeved on the outer periphery of the material changing shaft 27. A fixing seat 34 is fixedly provided between the outer wall of the damping sleeve 33 and the upper side of the test bench plate 1. The damping sleeve 33 can prevent the material changing shaft 27 from rotating accidentally. A fixing frame 35 is fixedly provided on the upper side of the test bench plate 1. A rotary encoder 36 is fixedly provided on the fixing frame 35. The rotary encoder 36 is electrically connected to the processing controller through a wire. The shaft end of the rotary encoder 36 is fixed on one end of the material changing shaft 27. When the material changing shaft 27 rotates, it will drive the rotary encoder 36 to rotate. When the rotary encoder 36 rotates, it will generate a signal and transmit the signal to the processing controller. The processing controller controls the motor 4 to stop rotating according to the signal of the rotary encoder 36, so that the material changing shaft 27 can accurately rotate a certain number of turns, and thus the next bearing to be tested can be accurately moved between the inner fixing component and the outer fixing component.

[0031] The workflow of this embodiment is as follows: First, install the bearing to be tested on the temporary positioning component, drive the material changing component to rotate through the torque detection component to switch the bearing to be tested, switch a bearing to be tested to the test position, and then drive the temporary positioning component and the inner fixing component through the outer fixing component to fix the inner and outer rings of the bearing. Then, test the dynamic torque of the bearing through the torque detection component. After the test is completed, control the outer fixing component and the inner fixing component to reset, and then drive the material changing component to rotate through the torque detection component to switch the bearing to be tested. Then, replace the bearing that has been tested on the temporary positioning component and repeat the operation to achieve efficient automatic testing.

[0032] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A bearing torque test fixture, comprising a test platform (1), wherein a plurality of support legs are fixedly provided on the lower side of the test platform (1), characterized in that: A torque detection component is provided on the upper side of the test table (1), and the torque detection component is used to detect the torque when the inner ring of the bearing rotates. A solid inner component is provided on one side of the torque detection component, and the torque detection component is used to drive the inner ring of the bearing and the solid inner component to rotate. A solid outer component is provided on the side of the solid inner component away from the torque detection component. A material changing component is provided in the accommodating groove on the test table (1), and the material changing component is driven to rotate by the torque detection component to switch the bearing to be tested. The material changing component includes a plurality of temporary positioning components, and the solid outer component drives the temporary positioning component and the solid inner component to fix the inner and outer rings of the bearing.

2. A bearing torque test tool according to claim 1, characterized in that: The torque detection assembly comprises a torque sensor (2), a processing controller, a display, and an inverted U-shaped seat (3) arranged above a test bench (1); a radial force generating assembly is arranged between the inverted U-shaped seat (3) and the test bench (1); a motor (4) is fixed on the upper side of the inverted U-shaped seat (3); the torque sensor (2) is fixed on the upper side of the inverted U-shaped seat (3) through a bracket; the shaft end of the motor (4) is fixed on one end of the torque sensor (2); a connecting shaft (5) is arranged above the inverted U-shaped seat (3); a shaft seat (6) is rotatably arranged on the outer periphery of the connecting shaft (5); the shaft seat (6) is fixed on the upper side of the inverted U-shaped seat (3); the output shaft of the motor (4) and the connecting shaft (5) are connected via a spur gear transmission; an active conical wheel (7) is fixed on the outer periphery of the connecting shaft (5).

3. A bearing torque test tool according to claim 2, characterized in that: The radial force generating assembly comprises a slide seat (8) slidably connected to the upper side of the test bench (1); a mounting hole and two vertical holes are provided on the upper side of the slide seat (8); a vertical rod (9) is slidably provided inside the vertical hole; the upper end of the vertical rod (9) is fixed to the lower side of the top of the inverted U-shaped seat (3); a vertical hydraulic cylinder (10) is fixed inside the mounting hole; a first pressure sensor (11) is fixed to the axial end of the vertical hydraulic cylinder (10); the first pressure sensor (11) is fixed to the lower side of the top of the inverted U-shaped seat (3); a second pressure sensor (12) and a connecting frame (13) are fixed in sequence on one side of the slide seat (8); the connecting frame (13) is slidably connected to the upper side of the test bench (1).

4. A bearing torque test tool according to claim 2, characterized in that: The solid inner component comprises a combined shaft (14) fixed to the other end of the torque sensor (2), the combined shaft (14) being a structure with round shafts at both ends and a hexagonal shaft in the middle, a hexagonal sleeve (15) being slidably connected to the outer periphery of the combined shaft (14), a tripod (16) being fixedly provided on one side of the hexagonal sleeve (15), a plurality of guide holes being provided on the tripod (16), a solid inner frame (17) being slidably provided on the inner side of the guide hole, and a reset tension spring (17) being fixedly provided between one side of the solid inner frame (17) and the outer wall of the tripod (16). 8), a plurality of bevel frames (19) are fixedly provided on the outer periphery of the combined shaft (14), an oblique groove matching the bevel frames (19) is provided on the fixed inner frame (17), the bevel frames (19) are slidably connected in the oblique groove, the end of the combined shaft (14) away from the torque sensor (2) is a pointed structure, an adjustment sleeve (20) is fixedly provided on the outer wall of the tripod (16), a bevel frame (21) is slidably connected to the inner side of the adjustment sleeve (20), and the adjustment sleeve (20) and the bevel frame (21) are detachably connected.

5. A bearing torque test tool according to claim 3, characterized in that: The solid external component comprises a guide rod (22), a guide seat (23) is slidably sleeved on the outer periphery of the guide rod (22), the guide seat (23) is fixed on the upper side of the test bench (1), a movable plate (24) is fixedly provided at one end of the guide rod (22), a through hole is provided on the movable plate (24), a horizontal hydraulic cylinder (25) is fixedly provided in the through hole, the shaft end of the horizontal hydraulic cylinder (25) is fixed on one side of the connecting frame (13), and a plurality of active wedge frames (26) are fixedly provided on the side of the movable plate (24) away from the guide rod (22).

6. A bearing torque test tool according to claim 5, characterized in that: The material changing assembly further comprises a material changing shaft (27) and a transmission shaft (30); a plurality of support seats (28) are rotatably provided on the outer circumference of the material changing shaft (27); a connection seat (31) is rotatably provided on the outer circumference of the transmission shaft (30); the support seat (28) and the connection seat (31) are fixed on the upper side of the test table (1); a rotation auxiliary assembly is provided between the material changing shaft (27) and the test table (1); a plurality of hollow frames (29) are fixedly provided on the outer circumference of the material changing shaft (27); the transmission shaft (30) and the material changing shaft (27) are connected to each other through bevel gear transmission; a driven conical wheel (32) is fixedly provided on the outer circumference of the transmission shaft (30); the driven conical wheel (32) matches the driving conical wheel (7); and the driven conical wheel (32) can be connected to the driving conical wheel (7) through contact transmission.

7. A bearing torque test tool according to claim 6, characterized in that: The rotation auxiliary component comprises a damping sleeve (33) rotatably sleeved on the outer periphery of the material changing shaft (27); a fixing seat (34) is fixedly provided between the outer wall of the damping sleeve (33) and the upper side of the test table (1); a fixing frame (35) is fixedly provided on the upper side of the test table (1); a rotary encoder (36) is fixedly provided on the fixing frame (35); and a shaft end of the rotary encoder (36) is fixedly provided on one end of the material changing shaft (27).

8. A bearing torque test tool according to claim 6, characterized in that: The temporary positioning assembly comprises an annular frame (37) fixed on the hollow frame (29), the annular frame (37) being provided with a plurality of clamping holes, a clamping frame (38) being slidably connected in the clamping holes, a driven wedge block (39) being fixedly provided at one end of the clamping frame (38), the driven wedge block (39) being matched with the active wedge frame (26), a clamping tension spring (40) being fixedly provided between the driven wedge block (39) and the annular frame (37), and a stopper (41) being fixedly provided at one side of the clamping frame (38).

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