Deflection endurance test device for spherical bearing for vehicle

Abstract

The invention discloses a deflection endurance test device for a vehicle spherical bearing. The deflection endurance test device comprises a loading mechanism used for providing axial loading force for the vehicle spherical bearing to be tested; the shaft end of a loading motor of the loading mechanism is in contact with the first end of an elastic piece through a pressure sensor; the second end of the elastic member is provided with a test shaft. The other end of the test shaft is inserted into a bearing seat of the automotive spherical bearing mounting mechanism and is in contact with a bearing inner ring of the automotive spherical bearing; the deflection oscillation mechanism is used for controlling the deflection frequency of the oscillation main shaft; one end of the oscillation main shaft penetrates into the bearing seat through a second connecting shaft and is in radial contact with a bearing outer ring of the spherical bearing for the vehicle; the angle of the spherical bearing for the vehicle is controlled by an angle encoder which is symmetrically arranged with the oscillation main shaft and is provided with a first connecting shaft; an output motor of the deflection oscillation mechanism is connected with the other end of the oscillation main shaft through a crank rocker mechanism, and the deflection frequency of the oscillation main shaft is controlled through the crank rocker mechanism.

Description

Technical Field

[0001] The invention relates to the field of manufacturing vehicle spherical bearings, and in particular to a vehicle spherical bearing deflection durability testing device. Background Art

[0002] The characteristic of automotive spherical bearings is that the outer diameter surface of its outer ring is a spherical surface, which can be fitted into the corresponding concave spherical surface of the bearing seat to play a role in self-alignment. It is mainly used in eccentric or eccentric working conditions. When it is working, the outer ring and the bearing seat contact the spherical surface to make an eccentric motion. Therefore, the reliability and stability of the fit between the spherical surfaces are closely related to the performance of the spherical bearing. The wear of the spherical contact surface directly affects the noise of the bearing, and over time, it affects the service life of the bearing. For the eccentric endurance test of spherical bearings, there is currently no mature special equipment on the market to conduct efficient testing. Summary of the invention

[0003] In order to overcome the above-mentioned defects of the prior art, the purpose of the present invention is to provide a vehicle spherical bearing deflection endurance test device. The deflection frequency and angle of the present invention can be adjusted, which can better meet the requirements of different vehicle spherical bearing deflection endurance tests.

[0004] In order to achieve the purpose of the present invention, the technical solution adopted is:

[0005] A vehicle spherical bearing deflection durability test device, comprising:

[0006] A loading mechanism for providing an axial loading force to a spherical bearing for a vehicle to be tested;

[0007] The shaft end of the loading motor of the loading mechanism contacts the first end of the elastic member through the pressure sensor;

[0008] The second end of the elastic member is provided with a test shaft;

[0009] The other end of the test shaft is inserted into the bearing seat of the vehicle spherical bearing installation mechanism and contacts the inner ring of the vehicle spherical bearing;

[0010] a deflection oscillation mechanism for controlling the deflection frequency of the oscillation main shaft;

[0011] One end of the oscillating main shaft penetrates into the bearing seat through the second connecting shaft and radially contacts the outer ring of the vehicle spherical bearing;

[0012] The angle of the vehicle spherical bearing is controlled by an angle encoder with a first connecting shaft arranged symmetrically with the oscillation main axis;

[0013] The output motor of the deflection oscillation mechanism is connected to the other end of the oscillation main shaft through a crank rocker mechanism, and the deflection frequency of the oscillation main shaft is controlled by the crank rocker mechanism.

[0014] In a preferred embodiment of the present invention, the elastic member is a spring disposed in a spring compartment.

[0015] The first end opening of the spring chamber allows the spring to contact the pressure sensor, and the second end opening of the spring chamber allows the test shaft seat end of the test shaft to penetrate into the spring chamber and contact the spring.

[0016] In a preferred embodiment of the present invention, the test shaft is a step structure.

[0017] In a preferred embodiment of the present invention, the bearing seat is fixed by a bearing seat fixing frame.

[0018] In a preferred embodiment of the present invention, the inner side of the bearing seat contacts the outer ring of the vehicle spherical bearing.

[0019] In a preferred embodiment of the present invention, the first connecting shaft is fixed by a first bracket.

[0020] In a preferred embodiment of the present invention, the second connecting shaft is fixed by a second bracket.

[0021] In a preferred embodiment of the present invention, the output motor is fixed by an output motor bracket.

[0022] In a preferred embodiment of the present invention, the crank-rocker mechanism comprises a first hinge connected to the output shaft of the output motor through a swing head mounting plate;

[0023] The first hinge is connected to the second hinge via a first connecting rod;

[0024] The second hinge is connected to the other end of the oscillation main shaft through a rocker and is locked by a locking nut.

[0025] In a preferred embodiment of the present invention, the oscillation spindle is fixed by an oscillation spindle bracket.

[0026] The beneficial effects of the present invention are:

[0027] The deflection frequency and angle of the present invention can be coordinated and adjusted, and can better meet the requirements of deflection endurance tests of different vehicle spherical bearings. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 The installation diagram of the present invention is shown in FIG. Figure 1 .

[0029] Figure 2 It is a schematic diagram of the loading mechanism of the present invention.

[0030] Figure 3 It is a partial schematic diagram of the loading mechanism of the present invention.

[0031] Figure 4 The installation diagram of the present invention is shown in FIG. Figure 2 .

[0032] Figure 5 It is a partial installation schematic diagram of the present invention. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical scheme and advantages of the present invention clearer, the present invention is further described in detail below through the accompanying drawings and embodiments. However, it should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the scope of the present invention. In addition, in the following structure, the description of the known structure and technology is omitted to avoid unnecessary confusion of the concept of the present invention.

[0034] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the device or component referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0035] like Figure 1-5 Any one of the vehicle spherical bearing deflection durability test devices includes a loading mechanism 100 for providing an axial loading force to the vehicle spherical bearing to be tested.

[0036] The shaft end of the loading motor 1 of the loading mechanism contacts the first end of the elastic member 5 through the pressure sensor 3. The second end of the elastic member 5 is provided with a test shaft 6. The elastic member 5 is a spring 5 arranged in a spring compartment 4. The first end of the spring compartment 4 is opened so that the spring 5 contacts the pressure sensor 3. The second end of the spring compartment 4 is opened so that the test shaft seat end of the test shaft 6 penetrates into the spring compartment 4 and contacts the spring 5.

[0037] The test shaft 6 is a step structure. The other end of the test shaft 6 is inserted into the bearing seat 7 of the vehicle spherical bearing installation mechanism 200 and contacts the bearing inner ring 10 of the vehicle spherical bearing.

[0038] The large step surface at the left end of the test shaft 6 is nested in the spring magazine 4 and matches the inner diameter of the spring magazine 4 and can slide. The right end of the test shaft 6 matches the bearing inner ring 10 of the vehicle spherical bearing, and the bearing inner ring 10 of the vehicle spherical bearing is locked to the test shaft 6 by a nut; the bearing outer ring 9 of the vehicle spherical bearing is nested in the bearing seat 7, and the bearing seat 7 is a concave spherical structure. The bearing outer ring 9 of the vehicle spherical bearing and the bearing seat 7 can swing along the axial direction.

[0039] The bearing seat 7 is externally fixed by a bearing seat fixing frame 8. The inner side of the bearing seat 7 is in contact with the bearing outer ring 9 of the vehicle spherical bearing.

[0040] The present invention also includes a yaw oscillation mechanism 300 for controlling the yaw frequency of the oscillation main shaft 25. One end of the oscillation main shaft 25 penetrates into the bearing seat 7 through the second connecting shaft 14 and radially contacts the outer ring 9 of the vehicle spherical bearing. The second connecting shaft 14 is fixed by the second bracket 15.

[0041] The angle of the vehicle spherical bearing is controlled by an angle encoder 11 with a first connecting shaft 13 which is arranged symmetrically with the oscillation main shaft 25. The first connecting shaft 13 is fixed by a first bracket 12.

[0042] The left side of the first connecting shaft 13 passes through the upper circular hole of the first bracket 12 and is connected to the angle encoder 11 . A ball bearing 121 is installed inside the upper circular hole of the first bracket 12 to support the first connecting shaft 13 .

[0043] The right side of the second connecting shaft 14 passes through the upper circular hole of the second bracket 15. A ball bearing 151 is installed inside the upper circular hole of the second bracket 15 to support the second connecting shaft 14. The first bracket 12 and the second bracket 15 are fixedly installed on the test bench plate.

[0044] The output motor 16 of the yaw oscillation mechanism is connected to the other end of the oscillation main shaft 25 through a crank rocker mechanism, and the crank rocker mechanism is used to control the yaw frequency of the oscillation main shaft 25. The output motor 16 is fixed by an output motor bracket 19. The oscillation main shaft 25 is fixed by an oscillation main shaft bracket 24.

[0045] The crank rocker mechanism includes a first hinge 17 connected to the output shaft of the output motor 16 through a swing head mounting plate 18, the first hinge 17 is connected to the second hinge 21 through a first connecting rod 20, and the second hinge 21 is connected to the other end of the oscillation main shaft 25 through a rocker 22 and locked by a locking nut 23.

[0046] The output end of the output motor 16 of the yaw oscillation mechanism is concentrically fixedly connected to the swing head mounting plate 18, the swing head mounting plate 18 is provided with a slide groove structure 181, the first hinge 17 is eccentrically installed in the slide groove 181 of the swing head mounting plate through a slider 182, and the swing angle of the rocker 22 is changed by changing the eccentric position of the slider 182 in the slide groove 181. Bearings are installed inside the first hinge 17 and the second hinge 21, and can rotate in a circular direction. The first hinge 17 and the second hinge 21 are connected by a connecting rod 20, the second hinge 21 is connected to the upper part of the rocker 22, and the lower part of the rocker 22 is fixed to the other end of the oscillation main shaft 25 by a locking nut 23, and the frequency of vibration of the oscillation main shaft is controlled by controlling the rotation speed of the output motor 16.

[0047] When working, the loading mechanism drives the loading by controlling the loading motor 1 of the loading mechanism. The load is transmitted to the inner ring 10 of the spherical bearing through the pressure sensor 3, the spring 5, and the test shaft 6, and acts on the outer ring 9 of the bearing and the bearing seat through the steel ball to reach the load on the spherical contact surface of the spherical bearing. The spring 5 has a good buffering capacity and the load is more stable.

[0048] The yaw oscillation mechanism drives the swing head mounting plate 18 to rotate by controlling the output motor 16 of the yaw oscillation mechanism. At this time, the first hinge 17 rotates at a constant speed due to its eccentric structure, and the connecting rod 20 drives the rocker 22 to swing back and forth through the first hinge 17 and the second hinge 21, thereby driving the oscillation main shaft 24 to rotate forward and reverse, and driving the second connecting shaft 14, the bearing seat fixing frame 7 and the bearing seat 8 to rotate forward and reverse, so that the spherical bearing outer ring 9 and the bearing seat 8 can swing along the axial direction of the spherical bearing.

[0049] The fixing of the present invention is not immobile, but relatively fixed.

[0050] The basic principles and main features of the invention and the advantages of the invention are shown and described above.

[0051] Those skilled in the art should understand that the present invention is not limited to the above-mentioned embodiments. The above-mentioned embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which shall fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A vehicle spherical bearing deflection durability test device, characterized in that: include: A loading mechanism for providing an axial loading force to a spherical bearing for a vehicle to be tested; The shaft end of the loading motor of the loading mechanism contacts the first end of the elastic member through the pressure sensor; The second end of the elastic member is provided with a test shaft; The other end of the test shaft is inserted into the bearing seat of the vehicle spherical bearing installation mechanism and contacts the inner ring of the vehicle spherical bearing; a deflection oscillation mechanism for controlling the deflection frequency of the oscillation main shaft; One end of the oscillating main shaft penetrates into the bearing seat through the second connecting shaft and radially contacts the outer ring of the vehicle spherical bearing; The angle of the vehicle spherical bearing is controlled by an angle encoder with a first connecting shaft arranged symmetrically with the oscillation main axis; The output motor of the deflection oscillation mechanism is connected to the other end of the oscillation main shaft through a crank rocker mechanism, and the deflection frequency of the oscillation main shaft is controlled by the crank rocker mechanism.

2. A vehicle spherical bearing deflection durability test device as claimed in claim 1, characterized in that: The elastic member is a spring arranged in a spring compartment. The first end opening of the spring chamber allows the spring to contact the pressure sensor, and the second end opening of the spring chamber allows the test shaft seat end of the test shaft to penetrate into the spring chamber and contact the spring.

3. The vehicle spherical bearing deflection durability test device according to claim 1, characterized in that: The test shaft is a step structure.

4. The vehicle spherical bearing deflection durability test device according to claim 1, characterized in that: The bearing seat is fixed by a bearing seat fixing frame.

5. The vehicle spherical bearing deflection durability test device according to claim 1, characterized in that: The inner side of the bearing seat contacts the outer ring of the vehicle spherical bearing.

6. The vehicle spherical bearing deflection durability test device according to claim 1, characterized in that: The first connecting shaft is fixed by a first bracket; The second connecting shaft is fixed by a second bracket.

7. The vehicle spherical bearing deflection durability test device according to claim 1, characterized in that: The output motor is fixed by an output motor bracket.

8. The vehicle spherical bearing deflection durability test device according to claim 1, characterized in that: The crank-rocker mechanism comprises a first hinge connected to the output shaft of the output motor through a swing head mounting plate; The first hinge is connected to the second hinge via a first connecting rod; The second hinge is connected to the other end of the oscillation main shaft through a rocker and is locked by a locking nut.

9. The vehicle spherical bearing deflection durability test device according to claim 1, characterized in that: The oscillation main shaft is fixed by an oscillation main shaft bracket.

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