Rigidity detection device of bearing for new energy automobile

Abstract

The invention discloses a rigidity detection device for a bearing for a new energy automobile in the technical field of bearing detection equipment, and the device comprises two supporting plates, a top plate and a bottom plate are fixedly connected between the two supporting plates, the upper end of the bottom plate is fixedly connected with a connecting plate, and a pressure sensor is fixedly installed in the upper end of the connecting plate. The upper end of the pressure sensor is fixedly connected with the mounting plate, and a positioning and clamping mechanism is arranged at the upper end of the mounting plate; by adjusting the position of a T-shaped screw in a T-shaped limiting groove, when an L-shaped connecting plate drives a connecting ring to rotate, after the T-shaped screw is in contact with the L-shaped connecting plate, the connecting ring cannot rotate, and when a detection mechanism performs primary detection and upwards returns to an initial position, a connecting shaft cannot drive a bearing body to rotate; and when the detection mechanism moves downwards again for detection, the L-shaped connecting plate drives the connecting ring to rotate, so that the bearing body stops after rotating for a certain distance.

Description

Technical Field

[0001] The present invention relates to the technical field of bearing detection equipment, and in particular to a stiffness detection device for a bearing used in a new energy vehicle. Background Art

[0002] For example, the Chinese patent with the announcement number CN117470536B discloses an intelligent detection device for the stiffness of a tapered roller bearing, comprising: a detection seat, a servo motor is installed on the rear side of the bottom of the detection seat, and a bracket is installed at the position of the detection bottom edge angle, and a detection top loading plate is installed above the detection seat; a hydraulic cylinder is installed on the top of the detection top loading plate, and a connecting plate is installed at the position of the detection bottom edge angle; the bottom of the connecting plate is installed at the position of the detection seat top edge angle.

[0003] However, the above scheme has the following shortcomings: in the above patent, the bearing is tested multiple times by replacing the pressure push plate in different positions, which is convenient for calculating the test results, and the deformation of the bearing is detected by the piezoelectric sensor, and the pressure sensor in the pressure sensor carrier plate detects the applied pressure to complete the stiffness test of the bearing. However, when the stiffness test of the bearing for new energy vehicles is performed in this way, only the same position can be repeatedly tested. When continuous stiffness test of different positions of the bearing for new energy vehicles is required, the bearing needs to be re-clamped, and the bearing cannot be automatically rotated according to the situation to achieve the effect of stiffness test of different points of the bearing. For this reason, we have introduced a stiffness detection device for bearings for new energy vehicles. Summary of the Invention

[0004] In view of the deficiencies in the prior art, the present invention provides a stiffness detection device for bearings for new energy vehicles to solve the problems raised in the above background technology.

[0005] The object of the present invention is achieved as follows: A stiffness detection device for a bearing for a new energy vehicle comprises two support plates, a top plate and a bottom plate are fixedly connected between the two support plates, a connecting plate is fixedly connected to the upper end of the bottom plate, a pressure sensor is fixedly installed in the upper end of the connecting plate, the upper end of the pressure sensor is fixedly connected to the mounting plate, and a positioning clamping mechanism is provided on the upper end of the mounting plate, and the bearing body is mounted through the positioning clamping mechanism; The upper end of the mounting plate is fixedly connected to a vertical plate, a connecting shaft is movably connected inside the vertical plate, a limiting mechanism is provided in the vertical plate and is arranged in an upper and lower manner, a plurality of first inclined grooves are provided on the outer side of the connecting shaft, the limiting mechanism is engaged in the first inclined grooves, a connecting ring is movably connected to the outer side of the connecting shaft, and a plurality of tooth grooves are provided on the outer side of the connecting ring; A plurality of second inclined grooves are provided on the inner side of the connecting ring, a plurality of clamping mechanisms are provided on the outer side of the connecting shaft, the clamping mechanisms are clamped in the second inclined grooves, a T-shaped limiting groove is provided on one end of the connecting ring, a T-shaped screw is slidably connected in the T-shaped limiting groove, and a screw ring is screwed on the outer side of the T-shaped screw; One side of the connecting ring is provided with an L-shaped connecting plate, one side of the L-shaped connecting plate is fixedly connected to a plurality of teeth, and the teeth are engaged in the tooth groove, the upper end of the L-shaped connecting plate passes through the lifting plate, and one side of the L-shaped connecting plate is fixedly connected to a guide plate, and a connecting rod is movably connected in the guide plate, the upper end of the connecting rod is fixedly connected to the lifting plate, and the lower end is fixedly connected to the square rod, and one side of the square rod is movably connected to a T-shaped slide, the lifting plate is arranged on the lower side of the top plate, the upper end of the top plate is fixedly connected to a telescopic cylinder, the output end of the telescopic cylinder passes through the top plate and is fixedly connected to the lifting plate, the outer side of the connecting shaft is fixedly sleeved with a limiting ring, the outer side of the connecting shaft is fixedly sleeved with a rubber layer, and one end of the connecting ring is provided with a scale.

[0006] Preferably, the positioning and clamping mechanism includes two clamping plates, and arc-shaped grooves are provided on the opposite surfaces of the two clamping plates. The lower end of the clamping plate is fixedly connected to a first T-block, and the first T-block slides in the first T-slot. The first T-slot is opened at the upper end of the mounting plate, and a support spring is fixedly connected in the first T-slot, and the other end of the support spring is fixedly connected to the first T-block. The lower end of the lifting plate is connected to a detection mechanism.

[0007] Preferably, the opposing surfaces of the two first T-shaped blocks are fixedly connected with a traction rope, the upper end of the mounting plate is fixedly connected with a support block, and the upper end of the support block is arranged in an arc shape.

[0008] Preferably, the limiting mechanism includes a first T-shaped rod, which is slidably connected in a sliding cavity. The sliding cavity is opened in the vertical plate. The first T-shaped rod is arranged in an inclined shape near one end of the connecting shaft and is clamped in the first inclined groove. A connecting spring is fixedly connected in the sliding cavity, and the other end of the connecting spring is fixedly connected to the first T-shaped rod.

[0009] Preferably, the clamping mechanism includes a second T-shaped rod, both sides of the second T-shaped rod are arranged in an inclined shape, the second T-shaped rod is slidably connected in a guide cavity, the guide cavity is opened in the connecting shaft, the second T-shaped rod is clamped in a second inclined groove at one end away from the connecting shaft, a first spring is fixedly connected in the guide cavity, and the other end of the first spring is fixedly connected to the second T-shaped rod.

[0010] Preferably, the T-shaped slide is slidably connected to a T-shaped guide groove, the T-shaped guide groove is opened in a square rod, a second spring is fixedly connected to the T-shaped guide groove, the other end of the second spring is fixedly connected to the T-shaped slide, the end of the T-shaped slide away from the square rod is fixedly connected to the traction rope, a third spring is sleeved on the outside of the connecting rod, the upper end of the third spring is fixedly connected to the lifting plate, and the lower end is fixedly connected to the guide plate.

[0011] Preferably, the detection mechanism includes a vertical rod, the upper end of the vertical rod is fixedly connected to the lifting plate, the lower end of the vertical rod is fixedly installed with a pressure ring through a screw, and the lower end of the vertical rod is fixedly connected to a distance measuring sensor.

[0012] Compared with the prior art, the beneficial effect of the present invention is that: through the setting of the limiting mechanism and the clamping mechanism, the connecting shaft can rotate clockwise but cannot rotate counterclockwise, and the connecting ring can still rotate along the outside of the connecting shaft when rotating counterclockwise, and by adjusting the position of the T-screw in the T-limiting groove, when the L-shaped connecting plate drives the connecting ring to rotate, the connecting ring cannot rotate after the T-screw contacts the L-shaped connecting plate, and when the detection mechanism performs an inspection and returns to the initial position, the connecting shaft will not drive the bearing body to rotate, and when the detection mechanism moves downward again for inspection, the L-shaped connecting plate will drive the connecting ring to rotate, so that the bearing body stops after rotating a certain distance, and the bearing body cannot be clamped manually, thereby realizing one-time stiffness detection of multiple points of the bearing body. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0014] Figure 1 It is a schematic diagram of the cross-sectional structure of the present invention.

[0015] Figure 2 It is a rear view structural schematic diagram of the present invention.

[0016] Figure 3 It is a schematic diagram of the cross-sectional structure of the vertical plate of the present invention.

[0017] Figure 4 This is a schematic diagram of the cross-sectional structure of the mounting plate of the present invention.

[0018] Figure 5 It is a schematic diagram of the partial cross-sectional structure of the connecting ring of the present invention.

[0019] Figure 6 For the present invention Figure 5 Enlarged structural diagram at point A in the middle.

[0020] Figure 7 It is a three-dimensional structural diagram of the connection relationship between the L-shaped connecting plate and the connecting ring of the present invention.

[0021] Figure 8 It is a three-dimensional structural diagram of the connection between the teeth and the tooth grooves of the present invention.

[0022] Figure 9 It is a schematic diagram of the three-dimensional structure of the connecting ring of the present invention.

[0023] Figure 10 It is a schematic diagram of the three-dimensional structure of the connecting shaft of the present invention.

[0024] Figure: 1. Support plate; 2. Bottom plate; 3. Connecting plate; 4. Mounting plate; 5. T-shaped slide plate; 6. Traction rope; 7. Second spring; 8. T-shaped guide groove; 9. Connecting shaft; 10. Connecting ring; 11. Square rod; 12. Guide plate; 13. L-shaped connecting plate; 14. Third spring; 15. Connecting rod; 16. Telescopic cylinder. 17. Top plate; 18. Lifting plate; 19. Vertical rod; 20. Distance sensor; 21. Pressure ring; 22. Limiting ring; 23. Bearing body; 24. T-screw; 25. T-limiting groove; 26. Second T-rod; 27. Screw ring; 28. First spring; 29. ​​Guide cavity; 30. Second inclined groove; 31. Vertical plate; 32. Clamping plate; 33. Connecting spring; 34. First inclined groove; 35. Sliding cavity; 36. First T-rod; 37. First T-slot; 38. First T-block; 39. Support spring; 40. Support block; 41. Pressure sensor; 42. Tooth groove; 43. Tooth; 44. Rubber layer. DETAILED DESCRIPTION

[0025] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0026] like Figures 1 to 10 As shown, the present invention provides a technical solution: Example 1: A stiffness detection device for a bearing used in a new energy vehicle comprises two support plates 1, such as Figure 1As shown, a top plate 17 and a bottom plate 2 are fixedly connected between the two support plates 1, a connecting plate 3 is fixedly connected to the upper end of the bottom plate 2, a pressure sensor 41 is fixedly installed in the upper end of the connecting plate 3, and the upper end of the pressure sensor 41 is fixedly connected to the mounting plate 4. The pressure applied to the surface of the bearing body 23 is detected by the pressure sensor 41. The pressure sensor 41 can be selected in appropriate size and model when in use. A positioning clamping mechanism is provided on the upper end of the mounting plate 4, and the bearing body 23 is mounted through the positioning clamping mechanism. like Figure 3 As shown, the upper end of the mounting plate 4 is fixedly connected to a vertical plate 31, and a connecting shaft 9 is movably connected inside the vertical plate 31. A limiting mechanism is provided in the vertical plate 31 and is arranged in an upper and lower manner. A plurality of first inclined grooves 34 are provided on the outside of the connecting shaft 9. The limiting mechanism is clamped in the first inclined groove 34. The limiting mechanism is clamped in the first inclined groove 34 so that the connecting shaft 9 can rotate clockwise but not counterclockwise. A connecting ring 10 is movably connected to the outside of the connecting shaft 9. Figure 9 、 Figure 10 As shown, two sliding grooves are provided on the inner side of the connecting ring 10, and two slip rings are fixedly connected to the outer side of the connecting shaft 9. The slip rings are slidably connected in the sliding grooves, so that the connecting ring 10 can rotate along the outer side of the connecting shaft 9 without being separated from the connecting shaft 9. A plurality of tooth grooves 42 are provided on the outer side of the connecting ring 10; like Figure 5 、 Figure 6 As shown, a plurality of second inclined grooves 30 are provided on the inner side of the connecting ring 10, and a plurality of clamping mechanisms are provided on the outer side of the connecting shaft 9. The clamping mechanisms are clamped in the second inclined grooves 30. The clamping mechanisms are clamped in the second inclined grooves 30, so that the connecting ring 10 can drive the connecting shaft 9 to rotate when it rotates clockwise. When the connecting ring 10 rotates counterclockwise, the connecting shaft 9 is limited. At this time, the clamping mechanism will disengage from the second inclined groove 30, so that the connecting ring 10 continues to rotate. A T-shaped limiting groove 25 is provided at one end of the connecting ring 10, and a T-shaped screw 24 is slidably connected in the T-shaped limiting groove 25. A screw ring 27 is screwed on the outer side of the T-shaped screw 24. When the screw ring 27 is rotated, the T-shaped screw 24 will move along the T-shaped limiting groove 25. When the screw ring 27 is tightened, the T-shaped screw 24 will fit tightly with the T-shaped limiting groove 25 and cannot move. An L-shaped connecting plate 13 is provided on one side of the connecting ring 10. A plurality of teeth 43 are fixedly connected to one side of the L-shaped connecting plate 13. The teeth 43 engage in the tooth grooves 42. The upper end of the L-shaped connecting plate 13 passes through the lifting plate 18. When the L-shaped connecting plate 13 cannot move further, as the lifting plate 18 continues to move downward, the L-shaped connecting plate 13 will pass through the lifting plate 18, allowing the lifting plate 18 to continue to move. One side of the L-shaped connecting plate 13 is fixedly connected to the guide plate 12, and the guide plate 12 is movably connected to the connecting rod 15. The upper end of the connecting rod 15 is fixedly connected to the lifting plate 18, and the lower end is fixedly connected to the square rod 11. One side of the square rod 11 is movably connected to the T-shaped slide 5. The lifting plate 18 is arranged on the lower side of the top plate 17. The upper end of the top plate 17 is fixedly connected to the telescopic cylinder 16. The output end of the telescopic cylinder 16 passes through the top plate 17 and is fixedly connected to the lifting plate 18. The telescopic cylinder 16 can be selected in appropriate size and model when in use. The outer side of the connecting shaft 9 is fixedly sleeved with a limiting ring 22, and the bearing body 23 is positioned by the limiting ring 22. The outer side of the connecting shaft 9 is fixedly sleeved with The rubber layer 44 can limit the bearing body 23 through the elasticity of the rubber layer 44, and at the same time ensure that the bearing body 23 can make corresponding slight movements after a certain external force is applied. A scale is provided at one end of the connecting ring 10, and the T-screw 24 is positioned by the scale to realize the control of the moving distance of the bearing body 23. For example, when it is necessary to rotate the bearing body 23 45 degrees each time, the T-screw 24 can be moved to the 45-degree scale position according to the scale. When the connecting ring 10 drives the T-screw 24 to contact the L-shaped connecting plate 13, the connecting ring 10 will not rotate at this time, thereby realizing flexible adjustment of the rotation distance of the bearing body 23 each time.

[0027] Example 2: On the basis of Example 1, in order to prevent the bearing body 23 from being clamped when rotating, the positioning clamping mechanism includes two clamping plates 32, and the opposing surfaces of the two clamping plates 32 are provided with arc-shaped grooves. Through the setting of the arc-shaped grooves, the bearing body 23 is completely clamped and limited by the two clamping plates 32, and the lower end of the clamping plate 32 is fixedly connected to a first T-block 38, and the first T-block 38 is slidably connected to the first T-slot 37. The first T-slot 37 is provided at the upper end of the mounting plate 4, and a support spring 39 is fixedly connected to the first T-slot 37, and the other end of the support spring 39 is fixedly connected to the first T-block 38. The lower end of the lifting plate 18 is connected to a detection mechanism, which applies pressure to the bearing body 23 through the detection mechanism and detects whether the bearing body 23 is deformed; The opposite surfaces of the two first T-blocks 38 are fixedly connected to the traction rope 6. When in use, the traction rope 6 can be made of a metal wire with higher strength. The end of the traction rope 6 away from the first T-block 38 passes through the mounting plate 4 and is fixedly connected to the T-shaped slide plate 5. In order to ensure that the two clamping plates 32 clamp the bearing body 23 only after the connecting ring 10 drives the connecting shaft 9 to rotate clockwise, when the length of the traction rope 6 is set, its length can be appropriately extended so that after the connecting ring 10 drives the connecting shaft 9 to rotate, the traction rope 6 can be tightened only when the square rod 11 moves downward. The upper end of the mounting plate 4 is fixedly connected to the support block 40. The upper end of the support block 40 is arranged in an arc shape, and the bearing body 23 is supported by the support block 40; The limiting mechanism includes a first T-shaped rod 36, which is slidably connected to the sliding cavity 35. The sliding cavity 35 is opened in the vertical plate 31, and the first T-shaped rod 36 is inclined near one end of the connecting shaft 9 and is clamped in the first inclined groove 34. The angle of the first T-shaped rod 36 is equal to the inclination angle in the first inclined groove 34, so that when the connecting shaft 9 rotates clockwise, the first T-shaped rod 36 clamped in the first inclined groove 34 will be squeezed to move into the sliding cavity 35. At this time, the connecting spring 33 is compressed. When the other second inclined groove 30 rotates to the position of the first T-shaped rod 36, the first T-shaped rod 36 will be re-clamped into the first inclined groove 34 under the elastic force of the connecting spring 33. A connecting spring 33 is fixedly connected in the sliding cavity 35, and the other end of the connecting spring 33 is fixedly connected to the first T-shaped rod 36. like Figure 5 As shown, the clamping mechanism includes a second T-shaped rod 26, both sides of the second T-shaped rod 26 are arranged in an inclined shape, the second T-shaped rod 26 is slidably connected to the guide cavity 29, the guide cavity 29 is opened in the connecting shaft 9, and the end of the second T-shaped rod 26 away from the connecting shaft 9 is clamped in the second inclined groove 30, the inclination angle of the second T-shaped rod 26 is equal to the inclination angle in the second inclined groove 30, and a first spring 28 is fixedly connected in the guide cavity 29, and the other end of the first spring 28 is fixedly connected to the second T-shaped rod 26.

[0028] The T-shaped slide 5 is slidably connected to the T-shaped guide groove 8, and the T-shaped guide groove 8 is opened in the square rod 11. A second spring 7 is fixedly connected to the T-shaped guide groove 8, and the other end of the second spring 7 is fixedly connected to the T-shaped slide 5. The end of the T-shaped slide 5 away from the square rod 11 is fixedly connected to the traction rope 6, and the outer side of the connecting rod 15 is sleeved with a third spring 14. The upper end of the third spring 14 is fixedly connected to the lifting plate 18, and the lower end is fixedly connected to the guide plate 12. When the two clamping plates 32 clamp the bearing body 23, as the square rod 11 continues to move downward, the T-shaped slide 5 will move along the T-shaped guide groove 8. At this time, the second spring 7 is compressed. When the lifting plate 18 moves upward, the square rod 11 will move synchronously. At this time, under the elastic force of the second spring 7, the T-shaped slide 5 returns to its initial position; The detection mechanism includes a vertical rod 19, the upper end of the vertical rod 19 is fixedly connected to the lifting plate 18, the lower end of the vertical rod 19 is fixedly installed with a pressure ring 21 through a screw, and the lower end of the vertical rod 19 is fixedly connected to a ranging sensor 20. The specific model of the ranging sensor 20 is the L1s-40 laser ranging sensor produced by Shenzhen Motian Radio Frequency Technology Co., Ltd.

[0029] Working principle: when in use, the bearing body 23 is sleeved on the outside of the rubber layer 44 of the connecting shaft 9. When the bearing body 23 contacts the limiting ring 22, the push on the bearing body 23 is released. At this time, the lower end of the bearing body 23 contacts the upper end of the support block 40. By loosening the screw ring 27, the T-screw 24 is moved along the T-limiting groove 25. The position of the T-screw 24 in the T-limiting groove 25 can control the rotation distance of the bearing body 23 after one detection. By re-tightening the screw ring The ring 27 can fix the T-screw 24, and the distance between it and the upper end of the bearing body 23 is measured by the distance sensor 20. Then, the telescopic cylinder 16 is opened to drive the lifting plate 18 to move downward. The movement of the lifting plate 18 drives the connecting rod 15 to move synchronously. Under the elastic force of the third spring 14, the L-shaped connecting plate 13 will move with the lifting plate 18. Because the teeth 43 are engaged in the tooth grooves 42, the connecting ring 10 will be driven to rotate clockwise during the downward movement of the L-shaped connecting plate 13. When the second T-shaped rod 26 is engaged with the second inclined groove 30, the connecting shaft 9 is rotated synchronously with the connecting ring 10. At the same time, when the connecting shaft 9 rotates clockwise, the first T-shaped rod 36 engaged with the first inclined groove 34 is squeezed and moved into the sliding cavity 35. At this time, the connecting spring 33 is compressed. When the other second inclined groove 30 rotates to the position of the first T-shaped rod 36, the first T-shaped rod 36 is re-engaged in the first inclined groove 34 under the elastic force of the connecting spring 33. Conversely, when the connecting shaft 9 rotates counterclockwise, the first T-shaped rod 36 will not move from the first inclined groove 34. The connecting ring 10 will not drive the connecting shaft 9 to rotate when it rotates, but will cause the second T-shaped rod 26 to move out of the second inclined groove 30 and be engaged in the other second inclined groove 30. When the T-screw 24 contacts the L-shaped connecting plate 13, the connecting ring 10 will no longer rotate, and the L-shaped connecting plate 13 will not continue to move downward. As the lifting plate 18 continues to move downward, the connecting rod 15 will slide along the guide plate 12. At this time, the third spring 14 is compressed, and the lifting plate 18 drives the connecting rod 15 to move, which also causes the square rod 11 to move. When the square rod 11 moves, it pulls the traction rope 6, and the traction rope 6 drives the first T-block 38 to move along the first T-slot 37. At this time, the two clamping plates 32 will slowly move toward the bearing body 23. When the L-shaped connecting plate 13 drives the connecting ring 10 to rotate, as the square rod 11 continues to move, the two clamping plates 32 clamp the bearing body 23. After the two clamping plates 32 clamp the bearing body 23, as the square rod 11 continues to move downward, the T-shaped slide plate 5 will move along the T-shaped guide groove 8. At this time, the second spring 7 is compressed. When the pressure ring 21 at the lower end of the vertical rod 19 contacts the upper end of the bearing body 23, the pressure ring 21 will apply pressure to the bearing body 23. The pressure sensor 41 detects the pressure applied to the bearing body 23. After the lifting plate 18 is controlled to return to the initial position, the distance between it and the bearing body 23 is measured again by the distance sensor 20. By measuring the distance between it and the bearing body 23 twice, it is determined whether the bearing body 23 is deformed after the pressure is applied by the pressure ring 21. The stiffness detection of the bearing body 23 is completed by combining the pressure value detected by the pressure sensor 41. When the lifting plate 18 moves upward, it will drive the connecting rod 15 to move. At this time, the L-shaped connecting plate 13 and the square rod 11 will move along. When the L-shaped connecting plate 13 moves upward, it will drive the connecting ring 10 to rotate counterclockwise. At this time, the square rod 11 will not rotate along. The upward movement of the square rod 11 will gradually cancel the pulling on the traction rope 6. Under the elastic force of the support spring 39, the two clamping plates 32 will move outward to cancel the clamping of the bearing body 23. When the lifting plate 18 moves downward again to perform stiffness detection at another point, the L-shaped connecting plate 13 will move downward again and cause the bearing body 23 to rotate to a certain distance and then stop, thereby realizing multi-point stiffness detection of a bearing body 23.

[0030] The above embodiments are only intended to help understand the method and core concept of the present invention. It should be noted that, without departing from the principles of the present invention, a number of improvements and modifications may be made to the present invention by those skilled in the art, and such improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A stiffness detection device for a bearing used in a new energy vehicle, comprising two support plates, characterized in that: A top plate and a bottom plate are fixedly connected between the two support plates, respectively. The upper end of the bottom plate is fixedly connected to a connecting plate. A pressure sensor is fixedly installed in the upper end of the connecting plate. The upper end of the pressure sensor is fixedly connected to the mounting plate. A positioning clamping mechanism is provided on the upper end of the mounting plate, and the bearing body is mounted through the positioning clamping mechanism. The upper end of the mounting plate is fixedly connected to a vertical plate, a connecting shaft is movably connected inside the vertical plate, a limiting mechanism is provided in the vertical plate and is arranged in an upper and lower manner, a plurality of first inclined grooves are provided on the outer side of the connecting shaft, the limiting mechanism is engaged in the first inclined grooves, a connecting ring is movably connected to the outer side of the connecting shaft, and a plurality of tooth grooves are provided on the outer side of the connecting ring; A plurality of second inclined grooves are provided on the inner side of the connecting ring, a plurality of clamping mechanisms are provided on the outer side of the connecting shaft, the clamping mechanisms are clamped in the second inclined grooves, a T-shaped limiting groove is provided on one end of the connecting ring, a T-shaped screw is slidably connected in the T-shaped limiting groove, and a screw ring is screwed on the outer side of the T-shaped screw; One side of the connecting ring is provided with an L-shaped connecting plate, one side of the L-shaped connecting plate is fixedly connected to a plurality of teeth, and the teeth are engaged in the tooth groove, the upper end of the L-shaped connecting plate passes through the lifting plate, and one side of the L-shaped connecting plate is fixedly connected to a guide plate, and a connecting rod is movably connected in the guide plate, the upper end of the connecting rod is fixedly connected to the lifting plate, and the lower end is fixedly connected to the square rod, and one side of the square rod is movably connected to a T-shaped slide, the lifting plate is arranged on the lower side of the top plate, the upper end of the top plate is fixedly connected to a telescopic cylinder, the output end of the telescopic cylinder passes through the top plate and is fixedly connected to the lifting plate, the outer side of the connecting shaft is fixedly sleeved with a limiting ring, the outer side of the connecting shaft is fixedly sleeved with a rubber layer, and one end of the connecting ring is provided with a scale.

2. A stiffness detection device for a bearing for a new energy vehicle according to claim 1, characterized in that: The positioning and clamping mechanism includes two clamping plates, and arc-shaped grooves are provided on the opposite surfaces of the two clamping plates. The lower end of the clamping plate is fixedly connected to a first T-block, and the first T-block is slidably connected to the first T-slot. The first T-slot is opened at the upper end of the mounting plate, and a support spring is fixedly connected to the first T-slot. The other end of the support spring is fixedly connected to the first T-block, and the lower end of the lifting plate is connected to a detection mechanism.

3. The stiffness detection device for a bearing for a new energy vehicle according to claim 2, characterized in that: The opposite surfaces of the two first T-blocks are fixedly connected with a traction rope, and the traction rope passes through the mounting plate at one end away from the first T-block and is fixedly connected to the T-shaped slide. The upper end of the mounting plate is fixedly connected with a support block, and the upper end of the support block is arranged in an arc shape.

4. The stiffness detection device for a bearing for a new energy vehicle according to claim 1, characterized in that: The limiting mechanism includes a first T-shaped rod, which is slidably connected to a sliding cavity. The sliding cavity is opened in the vertical plate. The first T-shaped rod is arranged in an inclined shape near one end of the connecting shaft and is clamped in the first inclined groove. A connecting spring is fixedly connected to the sliding cavity, and the other end of the connecting spring is fixedly connected to the first T-shaped rod.

5. The stiffness detection device for a bearing for a new energy vehicle according to claim 1, characterized in that: The clamping mechanism includes a second T-shaped rod, both sides of which are inclined, and the second T-shaped rod is slidably connected to the guide cavity, and the guide cavity is opened in the connecting shaft. The end of the second T-shaped rod away from the connecting shaft is clamped in the second inclined groove, and a first spring is fixedly connected in the guide cavity, and the other end of the first spring is fixedly connected to the second T-shaped rod.

6. The stiffness detection device for a bearing for a new energy vehicle according to claim 3, characterized in that: The T-shaped slide is slidably connected to the T-shaped guide groove, and the T-shaped guide groove is opened in the square rod. A second spring is fixedly connected to the T-shaped guide groove, and the other end of the second spring is fixedly connected to the T-shaped slide. The end of the T-shaped slide away from the square rod is fixedly connected to the traction rope, and a third spring is sleeved on the outside of the connecting rod. The upper end of the third spring is fixedly connected to the lifting plate, and the lower end is fixedly connected to the guide plate.

7. The stiffness detection device for a bearing for a new energy vehicle according to claim 1, characterized in that: The detection mechanism includes a vertical rod, the upper end of the vertical rod is fixedly connected to the lifting plate, the lower end of the vertical rod is fixedly installed with a pressure ring through a screw rod, and the lower end of the vertical rod is fixedly connected to a distance measuring sensor.

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