Sealed ball bearing test equipment for automobile steering device

Abstract

The utility model belongs to the field of testing, particularly relates to a sealed ball bearing testing device for an automobile steering device, and aims to solve the problems that the service life of a bearing is tested by directly driving a shaft to rotate through a motor in the prior art, but the stress condition of the bearing is difficult to simulate and the testing accuracy is low in the testing process. The device comprises a bottom plate and a plurality of bearings to be tested, the top of the bottom plate is provided with a top plate, the bottom of the top plate is fixedly connected with a plurality of guide rods, the guide rods are connected with the bottom plate in an inserted mode, the bottom of the top plate is fixedly connected with a motor, one end of an output shaft of the motor is provided with a transmission shaft, and a coupler is installed between the transmission shaft and the output shaft of the motor. In the process of testing the to-be-tested bearing, the pressure between the transmission shaft and the to-be-tested bearing can be changed, then the actual use state of the to-be-tested bearing is simulated, the test accuracy is improved, and meanwhile, in the process of moving the top plate, the moving stability of the top plate can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of testing, in particular to a sealed ball bearing testing device for an automobile steering gear. Background Art

[0002] Bearings are devices used to support and reduce mechanical friction, and are commonly found in various rotating equipment. The main function of a bearing is to support a mechanical rotating body, reduce its friction coefficient during movement, and ensure its rotation accuracy. It consists of four parts: an inner ring, an outer ring, a rolling element, and a cage. The inner ring cooperates with the shaft and rotates with the shaft, while the outer ring cooperates with the bearing seat to provide support.

[0003] In order to understand the service life of bearings, it is usually necessary to conduct spot checks on bearings. When using existing testing equipment, the motor usually drives the shaft to rotate directly to test the service life of the bearings. However, during the test, it is difficult to simulate the stress condition of the bearings and the test accuracy is low. Therefore, a sealed ball bearing test equipment for automobile steering gear is proposed. Utility Model Content

[0004] The purpose of the utility model is to solve the problem that the service life of the bearing is usually tested directly by rotating the shaft driven by a motor in the prior art, but it is difficult to simulate the bearing force during the test and the test accuracy is low. A sealed ball bearing testing device for an automobile steering gear is proposed.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A sealed ball bearing test device for an automobile steering gear comprises a bottom plate and a plurality of bearings to be tested, wherein a top plate is arranged on the top of the bottom plate, a plurality of guide rods are fixedly connected to the bottom of the top plate, the guide rods are plugged with the bottom plate, a motor is fixedly connected to the bottom of the top plate, a transmission shaft is arranged at one end of the motor output shaft, a coupling is installed between the transmission shaft and the motor output shaft, a plurality of first bearing sleeves are installed on the surface of the bottom plate, the bearings to be tested are respectively installed in the first bearing sleeves, and the bearing sleeves to be tested are arranged on the circumference of the transmission shaft;

[0007] A support column is fixedly connected to the surface of the bottom plate, and a pressure sensor is fixedly installed on the top of the support column.

[0008] As a further solution of the utility model, the surface of the bottom plate is threadedly connected with a penetrating threaded rod, the top of the threaded rod is rotatably connected to the top plate, the circumference of the threaded rod is fixedly connected with a worm gear, the bottom of the top plate is rotatably connected with a worm, and the worm gear is meshed with the worm wheel.

[0009] As a further solution of the present utility model, the first bearing sleeve includes a fixing plate. Wings are fixedly connected to both sides of the fixing plate, and the wings are fixed to the surface of the bottom plate by bolts. A circular hole for placing the bearing to be tested is provided on one side of the fixing plate, and a deformation groove is arranged on one side of the circular hole. A fastening bolt is rotatably connected to the top of the fixing plate, and the bottom of the fastening bolt passes through the deformation groove and is threadedly connected to the fixing plate below the deformation groove.

[0010] As a further solution of the present utility model, a second bearing sleeve is fixedly installed at the bottom of the top plate, and the second bearing sleeve has the same structure as the first bearing sleeve.

[0011] As a further solution of the present utility model, a handwheel is fixedly connected to one side of the worm.

[0012] As a further solution of the present utility model, support feet are fixedly connected to the bottom of the bottom plate.

[0013] In this application, during use, the bearing to be tested is sleeved on the circumference of the transmission shaft, and then the bearing to be tested is installed in the fixing plate. The bearing to be tested is clamped by tightening the fastening bolt. Then, the transmission shaft is fixedly connected to the motor output shaft through a coupling. The worm is rotated, and the worm drives the threaded rod to rotate through the worm gear, thereby changing the pressure between the transmission shaft and the bearing to be tested, improving the flexibility of use, and facilitating the simulation of the actual use state of the bearing to be tested.

[0014] Beneficial effects:

[0015] In the present utility model, for the sealing ball bearing testing device for an automotive steering gear, by arranging the motor on the movable top plate, during the process of testing the bearing to be tested, the pressure between the transmission shaft and the bearing to be tested can be changed, thereby simulating the actual use state of the bearing to be tested and improving the accuracy of the test;

[0016] In the present utility model, for the sealing ball bearing testing device for an automotive steering gear, by arranging a plurality of guide rods at the bottom of the top plate, during the process of moving the top plate, the stability of the movement of the top plate can be increased;

[0017] In the present utility model, during the process of testing the bearing to be tested, the pressure between the transmission shaft and the bearing to be tested can be changed, thereby simulating the actual use state of the bearing to be tested and improving the accuracy of the test. At the same time, during the process of moving the top plate, the stability of the movement of the top plate can be increased. Description of the drawings

[0018] Figure 1 It is a three-dimensional structural schematic diagram of a sealing ball bearing testing device for an automotive steering gear proposed by the present utility model;

[0019] Figure 2Schematic cross-sectional structure diagram of a test device for a sealed ball bearing used in an automotive steering gear proposed by the present utility model;

[0020] Figure 3 Schematic structure diagram of the first bearing sleeve of a test device for a sealed ball bearing used in an automotive steering gear proposed by the present utility model.

[0021] In the figure: 1, bottom plate; 2, top plate; 201, second bearing sleeve; 3, guide rod; 4, motor; 5, transmission shaft; 6, coupling; 7, first bearing sleeve; 8, support foot; 9, support column; 10, pressure sensor; 11, threaded rod; 12, worm gear; 13, worm; 14, handwheel; 15, fixing plate; 16, wing plate; 17, deformation groove; 18, fastening bolt. Specific embodiments

[0022] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments.

[0023] Embodiment 1

[0024] Referring to Figures 1 - 3 , a test device includes: a bottom plate 1 and multiple bearings to be tested. A top plate 2 is provided on the top of the bottom plate 1. A plurality of guide rods 3 are fixedly connected to the bottom of the top plate 2. The guide rods 3 are inserted into the bottom plate 1. The guide rods 3 are used to increase the stability of the movement of the top plate 2. A motor 4 is fixedly connected to the bottom of the top plate 2. One end of the output shaft of the motor 4 is provided with a transmission shaft 5. A coupling 6 is installed between the transmission shaft 5 and the output shaft of the motor 4. A plurality of first bearing sleeves 7 are installed on the surface of the bottom plate 1. The bearings to be tested are respectively installed in the first bearing sleeves 7. The bearings to be tested are sleeved on the circumference of the transmission shaft 5. The pressure of the top plate 2 can be adjusted, so as to conveniently simulate the actual use state of the bearings to be tested and improve the accuracy of the test;

[0025] A support column 9 is fixedly connected to the surface of the bottom plate 1. A pressure sensor 10 is fixedly installed on the top of the support column 9. The pressure sensor 10 is used to sense the downward pressure of the top plate 2.

[0026] In the present utility model, a threaded rod 11 passing through is threadedly connected to the surface of the bottom plate 1. The top of the threaded rod 11 is rotatably connected to the top plate 2. A worm gear 12 is fixedly connected to the circumference of the threaded rod 11. A worm 13 is rotatably connected to the bottom of the top plate 2. The worm 13 meshes with the worm gear 12. By rotating the worm 13, the worm 13 drives the threaded rod 11 to rotate through the worm gear 12, thereby changing the pressure between the transmission shaft 5 and the bearings to be tested, and the use is flexible.

[0027] This application can be used in the field of testing sealed ball bearings for automotive steering gears, and can also be used in other fields applicable to this application.

[0028] Embodiment 2

[0029] Reference Figures 1 - 3 , on the basis of Embodiment 1, an improved test device for a sealed ball bearing used in an automotive steering gear is provided, which is applied to the field of testing sealed ball bearings used in automotive steering gears.

[0030] Particularly, the first bearing sleeve 7 includes a fixing plate 15. Wings 16 are fixedly connected to both sides of the fixing plate 15. The wings 16 are fixed to the surface of the bottom plate 1 by bolts. A circular hole for placing the bearing to be tested is provided on one side of the fixing plate 15. A deformation groove 17 is arranged on one side of the circular hole. A fastening bolt 18 is rotatably connected to the top of the fixing plate 15. The bottom of the fastening bolt 18 passes through the deformation groove 17 and is threadedly connected to the fixing plate 15 below the deformation groove 17. The bearing to be tested can be clamped by tightening the fastening bolt 18, and the installation is convenient and fast.

[0031] It should be noted that a second bearing sleeve 201 is fixedly installed at the bottom of the top plate 2. The second bearing sleeve 201 has the same structure as the first bearing sleeve 7, and the second bearing sleeve 201 is used to keep the pressure on the transmission shaft 5 uniform.

[0032] In the present utility model, a hand wheel 14 is fixedly connected to one side of the worm 13, and the hand wheel 14 facilitates people to rotate the worm 13.

[0033] Particularly, support feet 8 are fixedly connected to the bottom of the bottom plate 1, and rubber pads are fixed to the bottoms of the support feet 8.

[0034] However, as is well known to those skilled in the art, the working principle and wiring method of the motor 4 are common knowledge, and they all belong to conventional means or well-known common sense, so they will not be elaborated here. Those skilled in the art can make any selection according to their needs or convenience.

[0035] The above is only a preferred specific embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution and the inventive concept of the present utility model, makes equivalent substitutions or changes, and all should be covered by the protection scope of the present utility model.

Claims

1. A test device for a sealed ball bearing used in an automotive steering gear, comprising a bottom plate (1) and a plurality of bearings to be tested, characterized in that, A top plate (2) is provided on the top of the bottom plate (1). A plurality of guide rods (3) are fixedly connected to the bottom of the top plate (2). The guide rods (3) are inserted into the bottom plate (1). A motor (4) is fixedly connected to the bottom of the top plate (2). One end of the output shaft of the motor (4) is provided with a transmission shaft (5). A coupling (6) is installed between the transmission shaft (5) and the output shaft of the motor (4). A plurality of first bearing sleeves (7) are installed on the surface of the bottom plate (1). The bearings to be tested are respectively installed in the first bearing sleeves (7). The bearings to be tested are sleeved on the circumference of the transmission shaft (5). A support column (9) is fixedly connected to the surface of the bottom plate (1). A pressure sensor (10) is fixedly installed on the top of the support column (9).

2. The test equipment for a sealed ball bearing used in an automotive steering gear according to claim 1, characterized in that, A threaded rod (11) penetrating through is threadedly connected to the surface of the bottom plate (1). The top of the threaded rod (11) is rotatably connected to the top plate (2). A worm gear (12) is fixedly connected to the circumference of the threaded rod (11). A worm (13) is rotatably connected to the bottom of the top plate (2). The worm (13) meshes with the worm gear (12).

3. The testing device for a sealed ball bearing used in an automotive steering gear according to claim 1, characterized in that, The first bearing sleeve (7) includes a fixing plate (15). Wings (16) are fixedly connected to both sides of the fixing plate (15). The wings (16) are fixed to the surface of the bottom plate (1) by bolts. A circular hole for placing the bearing to be tested is opened on one side of the fixing plate (15). A deformation groove (17) is provided on one side of the circular hole. A fastening bolt (18) is rotatably connected to the top of the fixing plate (15). The bottom of the fastening bolt (18) passes through the deformation groove (17) and is threadedly connected to the fixing plate (15) below the deformation groove (17).

4. A testing device for a sealed ball bearing used in an automotive steering gear according to claim 1, characterized in that, A second bearing sleeve (201) is fixedly installed on the bottom of the top plate (2). The second bearing sleeve (201) has the same structure as the first bearing sleeve (7).

5. A test device for a sealed ball bearing used in an automotive steering gear according to claim 2, characterized in that, A handwheel (14) is fixedly connected to one side of the worm (13).

6. The testing device for the sealed ball bearing used in an automotive steering gear according to claim 1, characterized in that, Support feet (8) are fixedly connected to the bottom of the bottom plate (1).

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