A stiffness detection device for a bearing of a new energy vehicle

Abstract

The application discloses a kind of stiffness detection device of bearing for new energy automobile in the technical field of bearing detection equipment, including two support plates, two described support plate between fixedly connected with top plate and bottom plate respectively, the bottom plate upper end is fixedly connected with connecting plate, the pressure sensor is fixedly installed in the connecting plate upper end, the pressure sensor upper end is fixedly connected with mounting plate, the mounting plate upper end is equipped with positioning clamping mechanism;Through the position adjustment of T type screw in T type limiting groove, when L type connecting plate drives connecting ring to rotate, T type screw is contacted with L type connecting plate, connecting ring cannot rotate, when detection mechanism is detected once and returns to initial position, connecting shaft cannot drive bearing body to rotate, when detection mechanism is detected again and moves downward, L type connecting plate drives connecting ring to rotate, so that bearing body stops after rotating a certain distance.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of bearing detection equipment, and particularly relates to a rigidity detection device for a bearing of a new energy automobile. BACKGROUND

[0002] As a Chinese patent with the publication number CN117470536B discloses a tapered roller bearing rigidity intelligent detection device, which comprises a detection seat, a servo motor is installed on the rear side of the bottom of the detection seat, a support is installed at the position of the edge angle of the bottom of the detection seat, and a detection top load plate is installed above the detection seat; a hydraulic cylinder is installed on the top of the detection top load plate, and a connecting plate is installed at the position of the edge angle of the bottom of the detection top load plate; the bottom of the connecting plate is installed at the position of the edge angle of the top of the detection seat.

[0003] However, the above-mentioned scheme has the following disadvantages: in the above-mentioned patent, different position pressure push plates are replaced to detect the bearing for multiple times, the results detected are calculated, the bearing is deformed for detection by a piezoelectric sensor, the pressure sensor in the pressure sensor load plate detects the applied pressure, and the rigidity detection of the bearing is completed, but when the rigidity of the bearing for a new energy automobile is detected by the above-mentioned method, only the same position can be repeatedly detected, and when the rigidity of the bearing for a new energy automobile needs to be continuously detected at different positions, the bearing needs to be clamped again, the bearing cannot be automatically rotated according to the situation, the rigidity of the bearing at different points cannot be detected, and therefore, a rigidity detection device for a bearing of a new energy automobile is provided. SUMMARY

[0004] In view of the deficiencies in the prior art, the present application provides a rigidity detection device for a bearing of a new energy automobile to solve the problems in the background art.

[0005] The purpose of the present application is achieved by a rigidity detection device for a bearing of a new energy automobile, which 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 with a mounting plate, a positioning and clamping mechanism is arranged on the upper end of the mounting plate, and the positioning and clamping mechanism is used for bearing body installation.

[0006] A vertical plate is fixedly connected to the upper end of the mounting plate, a connecting shaft is movably connected in the vertical plate, a limiting mechanism is arranged in the vertical plate in an up-down manner, a plurality of first inclined grooves are formed in the outer side of the connecting shaft, the limiting mechanism is clamped 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 formed in the outer side of the connecting ring.

[0007] The inside of the connecting ring is provided with a plurality of second inclined grooves, the outside of the connecting shaft is provided with a plurality of clamping mechanisms, the clamping mechanisms are clamped in the second inclined grooves, one end of the connecting ring is provided with a T-shaped limiting groove, a T-shaped screw is slidably connected in the T-shaped limiting groove, and the outside of the T-shaped screw is screwed with a screw ring.

[0008] One side of the connecting ring is provided with an L-shaped connecting plate, a plurality of teeth are fixedly connected to one side of the L-shaped connecting plate, the teeth are engaged in the tooth groove, the L-shaped connecting plate penetrates the lifting plate at the upper end, one side of the L-shaped connecting plate is fixedly connected with a guide plate, the guide plate is movably connected with a connecting rod, the upper end of the connecting rod is fixedly connected with the lifting plate, the lower end is fixedly connected with a square rod, one side of the square rod is movably connected with a T-shaped sliding plate, the lifting plate is arranged on the lower side of the top plate, the top plate is fixedly connected with a telescopic cylinder at the upper end, the output end of the telescopic cylinder penetrates the top plate and is fixedly connected with the lifting plate, the outside of the connecting shaft is fixedly sleeved with a limiting ring, the outside of the connecting shaft is fixedly sleeved with a rubber layer, and one end of the connecting ring is provided with a scale.

[0009] Preferably, the positioning and clamping mechanism comprises two clamping plates, the opposite surfaces of the two clamping plates are provided with arc-shaped grooves, the lower end of the clamping plate is fixedly connected with a first T-shaped block, the first T-shaped block is slidably connected in the first T-shaped groove, the first T-shaped groove is provided on the upper end of the mounting plate, the first T-shaped groove is fixedly connected with a supporting spring, the other end of the supporting spring is fixedly connected with the first T-shaped block, and the lower end of the lifting plate is connected with a detection mechanism.

[0010] Preferably, the opposite surfaces of the two first T-shaped blocks are fixedly connected with traction ropes, the upper end of the supporting block is arranged in an arc shape.

[0011] Preferably, the limiting mechanism comprises a first T-shaped rod, the first T-shaped rod is slidably connected in a sliding cavity, the sliding cavity is provided in the vertical plate, the first T-shaped rod is arranged in an inclined manner 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 with the first T-shaped rod.

[0012] Preferably, the clamping mechanism comprises a second T-shaped rod, the two sides of the second T-shaped rod are arranged in an inclined manner, the second T-shaped rod is slidably connected in a guide cavity, the guide cavity is provided in the connecting shaft, the end of the second T-shaped rod away from the connecting shaft is clamped in the second inclined groove, a first spring is fixedly connected in the guide cavity, and the other end of the first spring is fixedly connected with the second T-shaped rod.

[0013] Preferably, the T-shaped sliding plate is slidably connected in the T-shaped guide groove, the T-shaped guide groove is arranged in the square rod, the second spring is fixedly connected in the T-shaped guide groove, the other end of the second spring is fixedly connected with the T-shaped sliding plate, the end of the T-shaped sliding plate away from the square rod is fixedly connected with the traction rope, the third spring is sleeved outside the connecting rod, the upper end of the third spring is fixedly connected with the lifting plate, and the lower end of the third spring is fixedly connected with the guide plate.

[0014] Preferably, the detection mechanism comprises a vertical rod, the upper end of the vertical rod is fixedly connected with the lifting plate, the lower end of the vertical rod is fixedly installed with a compression ring through a screw rod, and the lower end of the vertical rod is fixedly connected with a distance measuring sensor.

[0015] Compared with the prior art, the beneficial effects of the present application are that: through the setting of the limiting mechanism and the clamping mechanism, the connecting shaft can rotate clockwise and cannot rotate counterclockwise, the connecting ring can still rotate along the outside of the connecting shaft when rotating counterclockwise, through the position adjustment of the T-shaped screw rod in the T-shaped limiting groove, when the L-shaped connecting plate drives the connecting ring to rotate, the connecting ring cannot rotate after the T-shaped screw rod contacts the L-shaped connecting plate, when the detection mechanism returns to the initial position after one detection, the connecting shaft cannot drive the bearing body to rotate, when the detection mechanism moves downward again for detection, the L-shaped connecting plate drives the connecting ring to rotate, so that the bearing body stops after rotating a certain distance, and manual clamping of the bearing body is realized, thereby realizing one-time stiffness detection of multiple points of the bearing body. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor on the basis of the provided drawings.

[0017] Figure 1 It is a cross-sectional structure schematic view of the present application.

[0018] Figure 2 It is a rear view structure schematic view of the present application.

[0019] Figure 3 It is a vertical plate cross-sectional structure schematic view of the present application.

[0020] Figure 4 It is a mounting plate cross-sectional structure schematic view of the present application.

[0021] Figure 5 It is a connecting ring partial cross-sectional structure schematic view of the present application.

[0022] Figure 6 It is aFigure 5 Enlarged structure diagram of the connection between the L-shaped connecting plate and the connecting ring.

[0023] Figure 7 Schematic diagram of the three-dimensional structure of the connection between the L-shaped connecting plate and the connecting ring.

[0024] Figure 8 Schematic diagram of the three-dimensional structure of the connection between the L-shaped connecting plate and the connecting ring.

[0025] Figure 9 Schematic diagram of the three-dimensional structure of the connection between the L-shaped connecting plate and the connecting ring.

[0026] Figure 10 Schematic diagram of the three-dimensional structure of the connection between the L-shaped connecting plate and the connecting ring.

[0027] In the 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 measuring sensor; 21, compression ring; 22, limiting ring; 23, bearing body; 24, T-shaped screw; 25, T-shaped limiting groove; 26, second T-shaped rod; 27, threaded 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-shaped rod; 37, first T-shaped groove; 38, first T-shaped block; 39, supporting spring; 40, supporting block; 41, pressure sensor; 42, tooth groove; 43, tooth; 44, rubber layer. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0029] As Figures 1 to 10 shown, the present application provides a technical solution:

[0030] Embodiment 1

[0031] A stiffness detection device for a bearing of a new energy vehicle, comprising two support plates 1, as Figure 1As shown, the two support plates 1 are respectively fixedly connected with the top plate 17 and the bottom plate 2, the upper end of the bottom plate 2 is fixedly connected with the connecting plate 3, the inner upper end of the connecting plate 3 is fixedly installed with the pressure sensor 41, the upper end of the pressure sensor 41 is fixedly connected with the mounting plate 4, the pressure applied to the surface of the bearing body 23 is detected through the pressure sensor 41, the pressure sensor 41 can be selected in appropriate size and model during use, the upper end of the mounting plate 4 is provided with a positioning and clamping mechanism, the bearing body 23 is installed through the positioning and clamping mechanism;

[0032] As shown in the figure, Figure 3 The upper end of the mounting plate 4 is fixedly connected with the vertical plate 31, the vertical plate 31 is movably connected with the connecting shaft 9, the vertical plate 31 is provided with a limiting mechanism arranged in an upper and lower manner, a plurality of first inclined grooves 34 are formed in the outer side of the connecting shaft 9, the limiting mechanism is clamped in the first inclined groove 34, the connecting shaft 9 can rotate clockwise without counterclockwise rotation through the clamping of the limiting mechanism in the first inclined groove 34, the outer side of the connecting shaft 9 is movably connected with the connecting ring 10, as shown in the figure, Figure 9 、 Figure 10 The inner side of the connecting ring 10 is provided with two sliding grooves, the outer side of the connecting shaft 9 is fixedly connected with two sliding rings, the sliding ring is slidably connected in the sliding groove, 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 formed in the outer side of the connecting ring 10;

[0033] As shown in the figure, Figure 5 、 Figure 6 A plurality of second inclined grooves 30 are formed in the inner side of the connecting ring 10, a plurality of clamping mechanisms are arranged on the outer side of the connecting shaft 9, the clamping mechanism is clamped in the second inclined groove 30, the connecting ring 10 can drive the connecting shaft 9 to rotate when rotating clockwise through the clamping of the clamping mechanism in the second inclined groove 30, when the connecting ring 10 rotates counterclockwise, the connecting shaft 9 is limited, at this time the clamping mechanism will be separated from the second inclined groove 30, so that the connecting ring 10 continues to rotate, one end of the connecting ring 10 is provided with a T-shaped limiting groove 25, a T-shaped screw rod 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 rod 24, when the screw ring 27 is screwed, the T-shaped screw rod 24 will move along the T-shaped limiting groove 25, when the screw ring 27 is tightened, the T-shaped screw rod 24 will be tightly combined with the T-shaped limiting groove 25 and cannot move;

[0034] One side of the connecting ring 10 is provided with an L-shaped connecting plate 13, a plurality of teeth 43 are fixedly connected on one side of the L-shaped connecting plate 13, the teeth 43 are engaged in the tooth groove 42, the L-shaped connecting plate 13 passes through the lifting plate 18, when the L-shaped connecting plate 13 cannot continue to move, with the continuous downward movement of the lifting plate 18, the L-shaped connecting plate 13 will pass through the lifting plate 18, so that the lifting plate 18 can continue to move;

[0035] The L-shaped connecting plate 13 is fixedly connected with a guide plate 12 on one side, the guide plate 12 is movably connected with a connecting rod 15, the upper end of the connecting rod 15 is fixedly connected with a lifting plate 18, the lower end is fixedly connected with a square rod 11, the square rod 11 is movably connected with a T-shaped sliding plate 5 on one side, the lifting plate 18 is arranged on the lower side of a top plate 17, the upper end of the top plate 17 is fixedly connected with a telescopic cylinder 16, the output end of the telescopic cylinder 16 penetrates through the top plate 17 and is fixedly connected with the lifting plate 18, the telescopic cylinder 16 can be selected in appropriate size and model during use, a limiting ring 22 is fixedly sleeved on the outer side of the connecting shaft 9, the bearing body 23 is positioned by the limiting ring 22, a rubber layer 44 is fixedly sleeved on the outer side of the connecting shaft 9, the bearing body 23 is limited by the elasticity of the rubber layer 44, and meanwhile it is ensured that the bearing body 23 can move slightly correspondingly after being subjected to a certain external force, one end of the connecting ring 10 is provided with a scale, the T-shaped screw rod 24 is positioned by the scale, and the movement distance of the bearing body 23 is controlled, for example, when the bearing body 23 needs to be rotated by 45 degrees each time, the T-shaped screw rod 24 can be moved to the 45-degree scale position according to the scale, when the connecting ring 10 drives the T-shaped screw rod 24 to be in contact with the L-shaped connecting plate 13, the connecting ring 10 will not rotate at this time, and the rotation distance of the bearing body 23 each time is flexibly adjusted.

[0036] Embodiment 2

[0037] On the basis of embodiment 1, in order to prevent the bearing body 23 from being clamped when rotating, the positioning and clamping mechanism comprises two clamping plates 32, and arc-shaped grooves are formed in opposite surfaces of the two clamping plates 32, so that the bearing body 23 is completely clamped and limited by the two clamping plates 32, a first T-shaped block 38 is fixedly connected to the lower end of the clamping plate 32, the first T-shaped block 38 is slidably connected in a first T-shaped groove 37, the first T-shaped groove 37 is formed in the upper end of the mounting plate 4, a supporting spring 39 is fixedly connected in the first T-shaped groove 37, and the other end of the supporting spring 39 is fixedly connected with the first T-shaped block 38. The lifting plate 18 is connected with a detection mechanism at the lower end, the detection mechanism is used for applying pressure to the bearing body 23 and detecting whether the bearing body 23 is deformed;

[0038] The opposite surfaces of the two first T-shaped blocks 38 are fixedly connected with traction ropes 6, the traction ropes 6 can be made of high-strength metal wires during use, one end of the traction rope 6 away from the first T-shaped block 38 penetrates through the mounting plate 4 and is fixedly connected with the T-shaped sliding plate 5, in order to prevent the two clamping plates 32 from clamping the bearing body 23 after the connecting ring 10 drives the connecting shaft 9 to rotate clockwise, the length of the traction rope 6 can be appropriately lengthened during length setting, so that the square rod 11 moves downward after the connecting ring 10 drives the connecting shaft 9 to rotate, and the traction rope 6 is taut, a supporting block 40 is fixedly connected to the upper end of the mounting plate 4, the upper end of the supporting block 40 is arc-shaped, and the bearing body 23 is supported by the supporting block 40.

[0039] The limiting mechanism comprises a first T-shaped rod 36, which is slidingly connected in a sliding cavity 35 formed in the vertical plate 31. The first T-shaped rod 36 is arranged in an inclined manner near one end of the connecting shaft 9 and is connected in the first inclined slot 34. The angle of the first T-shaped rod 36 is equal to the angle of the first inclined slot 34, so that the first T-shaped rod 36 connected in the first inclined slot 34 is pressed to move into the sliding cavity 35 during the clockwise rotation of the connecting shaft 9. At this time, the connecting spring 33 is compressed. When the other second inclined slot 30 is rotated to the position of the first T-shaped rod 36, the first T-shaped rod 36 is reconnected to the first inclined slot 34 under the elastic force of the connecting spring 33. The connecting spring 33 is fixedly connected in the sliding cavity 35, and the other end of the connecting spring 33 is fixedly connected with the first T-shaped rod 36.

[0040] As shown in Figure 5 The clamping mechanism comprises a second T-shaped rod 26, which is arranged in an inclined manner on both sides and is slidingly connected in a guide cavity 29 formed in the connecting shaft 9. The second T-shaped rod 26 is connected in the second inclined slot 30 away from the connecting shaft 9. The angle of the second T-shaped rod 26 is equal to the angle of the second inclined slot 30. The guide cavity 29 is fixedly connected with a first spring 28, and the other end of the first spring 28 is fixedly connected with the second T-shaped rod 26.

[0041] The T-shaped sliding plate 5 is slidingly connected in a T-shaped guide slot 8 formed in the square rod 11. The T-shaped guide slot 8 is fixedly connected with a second spring 7, and the other end of the second spring 7 is fixedly connected with the T-shaped sliding plate 5. The end of the T-shaped sliding plate 5 away from the square rod 11 is fixedly connected with the traction rope 6. The third spring 14 is sleeved on the outer side of the connecting rod 15, and the upper end of the third spring 14 is fixedly connected with the lifting plate 18 and the lower end is fixedly connected with the guide plate 12. When the two clamping plates 32 clamp the bearing body 23, the T-shaped sliding plate 5 moves along the T-shaped guide slot 8 as the square rod 11 continuously moves downward. At this time, the second spring 7 is compressed. When the lifting plate 18 moves upward, the square rod 11 moves synchronously. At this time, the T-shaped sliding plate 5 returns to the initial position under the elastic force of the second spring 7.

[0042] The detection mechanism comprises a vertical rod 19, the upper end of which is fixedly connected with the lifting plate 18. The vertical rod 19 is fixedly installed with a pressing ring 21 through a screw rod at the lower end. The lower end of the vertical rod 19 is fixedly connected with a distance measuring sensor 20. The base body of the distance measuring sensor 20 is an L1s-40 type laser distance measuring sensor produced by Shenzhen Motian RF Technology Co., Ltd.

[0043] The working principle is that when in use, the bearing body 23 is sleeved outside the rubber layer 44 of the connecting shaft 9, and when the bearing body 23 is in contact with the limiting ring 22, the pushing of the bearing body 23 is loosened, at this time, the lower end of the bearing body 23 is in contact with the upper end of the supporting block 40, the T-shaped screw rod 24 is moved along the T-shaped limiting groove 25 by loosening the screw ring 27, the rotating distance of the bearing body 23 after being detected once can be controlled by the position of the T-shaped screw rod 24 in the T-shaped limiting groove 25, the T-shaped screw rod 24 can be fixed by tightening the screw ring 27 again, the distance between the upper end of the bearing body 23 and the distance measuring sensor 20 is measured, then the telescopic cylinder 16 is opened to drive the lifting plate 18 to move downward, the connecting rod 15 is synchronously moved by the movement of the lifting plate 18, the L-shaped connecting plate 13 moves along with the lifting plate 18 under the elastic force of the third spring 14, since the teeth 43 are engaged in the tooth groove 42, in the process of the downward movement of the L-shaped connecting plate 13, the connecting ring 10 is driven to rotate clockwise;

[0044] Since the second T-shaped rod 26 is clamped in the second inclined groove 30, the connecting ring 10 is driven to rotate synchronously when the connecting ring 10 rotates, and in the process of the clockwise rotation of the connecting shaft 9, the first T-shaped rod 36 clamped in the first inclined groove 34 is extruded 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 is re-clamped 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 does not move out of the first inclined groove 34, and the connecting ring 10 does not drive the connecting shaft 9 to rotate, but the second T-shaped rod 26 moves out of the second inclined groove 30 and is clamped in the other second inclined groove 30;

[0045] When the T-shaped screw rod 24 is in contact with the L-shaped connecting plate 13, the connecting ring 10 does not rotate again, and the L-shaped connecting plate 13 also does not continue to move downward, along with the continuous downward movement of the lifting plate 18, the connecting rod 15 slides along the guide plate 12, at this time, the third spring 14 is compressed, and the connecting rod 15 moves along with the lifting plate 18, which also drives the square rod 11 to move, the square rod 11 moves to pull the traction rope 6, the traction rope 6 drives the first T-shaped block 38 to move along the first T-shaped groove 37, at this time, the two clamping plates 32 slowly move towards the bearing body 23, along with the continuous movement of the square rod 11, the two clamping plates 32 clamp the bearing body 23 after the connecting ring 10 is rotated by the L-shaped connecting plate 13;

[0046] When the two clamping plates 32 clamp the bearing body 23, as the square rod 11 continuously moves downward, the T-shaped slide plate 5 moves along the T-shaped guide groove 8, at this time the second spring 7 is compressed, when the pressing ring 21 at the lower end of the vertical rod 19 contacts the upper end of the bearing body 23, the pressing ring 21 exerts pressure on the bearing body 23, the pressure sensor 41 detects the pressure exerted on the bearing body 23, after the control lifting plate 18 returns to the initial position, the distance between the distance measuring sensor 20 and the bearing body 23 is measured again, by measuring the distance between the two times, it is judged whether the bearing body 23 is deformed after the pressing ring 21 exerts pressure, by combining the pressure value detected by the pressure sensor 41, the stiffness detection of the bearing body 23 is completed;

[0047] When the lifting plate 18 moves upward, the connecting rod 15 moves, at this time the L-shaped connecting plate 13 and the square rod 11 move, when the L-shaped connecting plate 13 moves upward, the connecting ring 10 rotates counterclockwise, at this time the square rod 11 does not follow the rotation, the square rod 11 moves upward and gradually cancels the pulling of the traction rope 6, under the action of the elastic force of the supporting spring 39, the two clamping plates 32 move outward to cancel the clamping of the bearing body 23, when the lifting plate 18 moves downward again to detect the stiffness of another point, the L-shaped connecting plate 13 moves downward again and makes the bearing body 23 rotate to a certain distance and then stops, realizing the multi-point stiffness detection of the bearing body 23.

[0048] The above embodiments are only used to help understand the method of the present application and its core idea. It should be noted that for ordinary skilled in the art, without departing from the principles of the present application, the present application can be improved and modified, and these improvements and modifications also fall within the scope of the claims of the present application.

Claims

1. A stiffness testing device for bearings used in new energy vehicles, comprising two support plates, characterized in that: A top plate and a bottom plate are fixedly connected between the two support plates respectively. A connecting plate is fixedly connected to the upper end of the bottom plate. A pressure sensor is fixedly installed inside 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 installed through the positioning clamping mechanism. A vertical plate is fixedly connected to the upper end of the mounting plate, a connecting shaft is movably connected inside the vertical plate, a limiting mechanism is provided inside the vertical plate and arranged vertically, a plurality of first inclined grooves are opened 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 toothed grooves are opened on the outer side of the connecting ring. The inner side of the connecting ring is provided with several second inclined grooves, and the outer side of the connecting shaft is provided with several snap-fit ​​mechanisms. The snap-fit ​​mechanisms are snapped into the second inclined grooves. One end of the connecting ring is provided with a T-shaped limiting groove. A T-shaped screw is slidably connected in the T-shaped limiting groove, and a screw ring is screwed to the outer side of the T-shaped screw. An L-shaped connecting plate is provided on one side of the connecting ring. Several teeth are fixedly connected to one side of the L-shaped connecting plate, meshing within tooth grooves. The upper end of the L-shaped connecting plate passes through a lifting plate. A guide plate is fixedly connected to one side of the L-shaped connecting plate, and a connecting rod is movably connected within 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 a square rod. A T-shaped sliding plate is movably connected to one side of the square rod. The lifting plate is located below the top plate. A telescopic cylinder is fixedly connected to the upper end of the top plate, and the output end of the telescopic cylinder passes through the top plate and is fixedly connected to the lifting plate. A limit ring is fixedly sleeved on the outside of the connecting shaft, and a rubber layer is fixedly sleeved on the outside of the connecting shaft. One end of the connecting ring has a scale. When the connecting ring drives the screw to contact the L-shaped connecting plate, the connecting ring will not rotate, allowing for flexible adjustment of the bearing body's rotation distance for each rotation. 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 inclined at one end near the connecting shaft and is engaged in a 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. The locking mechanism includes a second T-shaped rod, both sides of which are inclined. The second T-shaped rod slides in a guide cavity, which is opened in the connecting shaft. The end of the second T-shaped rod away from the connecting shaft is locked in a second inclined groove. 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.

2. The stiffness testing device for bearings used in new energy vehicles according to claim 1, characterized in that: The positioning and clamping mechanism includes two clamping plates, each with an arc-shaped groove on its opposite surface. A first T-shaped block is fixedly connected to the lower end of each clamping plate. The first T-shaped block slides within the first T-shaped groove, which is located at the upper end of the mounting plate. A support spring is fixedly connected within the first T-shaped groove, and the other end of the support spring is fixedly connected to the first T-shaped block. A detection mechanism is connected to the lower end of the lifting plate.

3. The stiffness testing device for bearings used in new energy vehicles according to claim 2, characterized in that: Two first T-shaped blocks are fixedly connected to each other on opposite sides with traction ropes. The end of the traction rope away from the first T-shaped block passes through the mounting plate and is fixedly connected to the T-shaped sliding plate. A support block is fixedly connected to the upper end of the mounting plate, and the upper end of the support block is arc-shaped.

4. The stiffness testing device for bearings used in new energy vehicles according to claim 3, characterized in that: The T-shaped sliding plate slides into the T-shaped guide groove, which is located inside the square rod. A second spring is fixedly connected inside the T-shaped guide groove, and the other end of the second spring is fixedly connected to the T-shaped sliding plate. The end of the T-shaped sliding plate 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.

5. The stiffness testing device for bearings used in new energy vehicles according to claim 2, characterized in that: The detection mechanism includes a vertical rod, the upper end of which is fixedly connected to a lifting plate, and a pressure ring is fixedly installed at the lower end of the vertical rod by a screw. A distance measuring sensor is fixedly connected to the lower end of the vertical rod.

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