Test bed for simply and rapidly switching service life of bearing

Abstract

A test bed for simply and rapidly switching bearing life comprises a base, one side of the base is connected with a motor support, a motor is installed on the motor support, the other side of the base is connected with a fixing seat, an installation cavity is machined in the fixing seat, a detachable bearing support is connected in the installation cavity, a bearing chamber is machined in the bearing support, and a bearing is arranged in the bearing chamber. A plurality of to-be-tested bearings are arranged in the bearing chamber, a driving shaft is arranged in the middles of the to-be-tested bearings in a penetrating manner, one end of the driving shaft is connected with an output shaft of the motor, the driving shaft is connected with a first pressing ring and a second pressing ring, the first pressing ring and the second pressing ring press inner rings of the to-be-tested bearings, and an outer end cover is arranged on the outer side of the second pressing ring. The outer end cover presses the outer rings of the to-be-tested bearings, and an outer ring check ring and an inner ring check ring are arranged between the to-be-tested bearings. According to the utility model, the servo motor is used as a driving source, the rotating speed is stable, and the bearing support can accommodate 8-12 bearings for testing according to the size of the bearings.

Description

Technical Field

[0001] The utility model relates to the technical field of bearings, in particular to a simple and quick-switching bearing life test bench. Background Art

[0002] After the bearing is assembled, it is necessary to test its usage conditions, such as the service life of the bearing. The life test results of the bearing can reveal the quality levels of the bearing structure design, manufacturing process, material, and lubrication, etc., and are important indicators for comprehensively evaluating the quality of bearing products.

[0003] When the existing life testing machines test bearings of different models, it is necessary to disassemble and replace the test tooling, which is time-consuming and laborious, with a low clamping efficiency, and a small number of bearings can be tested in a single test. Summary of the Utility Model

[0004] The technical problem to be solved by the utility model is to provide a simple and quick-switching bearing life test bench in view of the above-mentioned deficiencies of the existing technology.

[0005] To solve the above technical problem, the technical solution adopted by the utility model is as follows:[[]]

[0006] A simple and quick-switching bearing life test bench, including a base. A motor bracket is connected to one side of the base, and multiple motors are installed on the motor bracket. A fixed seat is connected to the other side of the base. Multiple installation chambers are machined in the fixed seat. A detachable bearing bracket is connected in the installation chamber. A bearing chamber is machined in the bearing bracket. A number of bearings to be tested are arranged in the bearing chamber. A driving shaft passes through the middle of the bearings to be tested. One end of the driving shaft is connected to the output shaft of the motor through a coupling. A first retaining ring is arranged on the driving shaft close to the motor side, and a second retaining ring is arranged on the driving shaft far from the motor side. The first retaining ring and the second retaining ring clamp the inner ring of the bearings to be tested. An outer end cover is arranged outside the second retaining ring, and the outer end cover presses the outer ring of the bearings to be tested. An outer ring retaining ring and an inner ring retaining ring are arranged between the bearings to be tested, and the outer ring retaining ring and the inner ring retaining ring are arranged at intervals between the bearings to be tested in sequence.

[0007] Furthermore, release grooves are machined on both sides of the installation chamber. Installation holes are arranged above the release grooves, and threaded holes are machined below the release grooves.

[0008] Furthermore, a first locking nut and a gasket are connected to the driving shaft close to the motor side. A spring is arranged between the gasket and the first retaining ring, and the spring is sleeved on the driving shaft.

[0009] Furthermore, a second locking nut is connected to the driving shaft far from the motor side, and the second locking nut presses the second retaining ring.

[0010] Further, a counterbore is machined around the outer end cover, and the counterbore is connected to the end face of the bearing bracket through a countersunk head screw.

[0011] Compared with the prior art, a simple and rapid bearing life test bench of the present utility model uses a servo motor as a driving source, with stable rotation speed. The bearing bracket can accommodate 8 to 12 bearings for testing according to the bearing size, and at the same time has good disassembly and assembly convenience, and can quickly switch bearings for testing. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 is a schematic structural diagram of the present utility model;

[0013] Figure 2 is a top view of the present utility model;

[0014] Figure 3 is a schematic structural diagram of the connection between the bearing to be tested and the bearing bracket of the present utility model;

[0015] Among them, 1. Base, 2. Motor bracket, 3. Motor, 4. Fixed seat, 5. Bearing bracket, 6. Bearing to be tested, 7. Release groove, 8. Mounting hole, 9. Driving shaft, 10. Coupling, 11. First retaining ring, 12. Second retaining ring, 13. First locking nut, 14. Gasket, 15. Spring, 16. Second locking nut, 17. Outer end cover, 18. Outer ring retaining ring, 19. Inner ring retaining ring. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0016] The technical solutions in the embodiments of the present utility model will be clearly and completely described below.

[0017] As Figures 1 to 3 shown, a simple and rapid bearing life test bench includes a base 1. A motor bracket 2 is connected to one side of the base 1, and multiple motors 3 are installed on the motor bracket 2. A fixed seat 4 is connected to the other side of the base 1. Multiple installation chambers are machined in the fixed seat 4, and a detachable bearing bracket 5 is connected in the installation chambers. A bearing chamber is machined in the bearing bracket 5, and several bearings 6 to be tested are arranged in the bearing chamber. In this embodiment, the installation chamber of the fixed seat 4 is a circular through hole, and the bearing bracket 5 is a cylindrical sleeve, and the bearing chamber inside it is machined according to the outer diameter of different types of bearings, and generally can accommodate 8 to 12 bearings to be tested.

[0018] Release grooves 7 are machined on both sides of the installation chamber. The machining of the release grooves 7 facilitates the installation of the bearing bracket 5. Mounting holes 8 are arranged above the release grooves 7, and threaded holes are machined below the release grooves 7. The mounting holes 8 are connected to the threaded holes below the release grooves through screws to lock the bearing bracket 5.

[0019] A drive shaft 9 passes through the middle of the bearing 6 to be measured. One end of the drive shaft 9 is connected to the output shaft of the motor 3 through a coupling 10. In this embodiment, a diaphragm coupling is adopted for the drive shaft 9. A first retaining ring 11 is arranged on the drive shaft 9 near the motor side, and a second retaining ring 12 is arranged on the drive shaft 9 far from the motor side. The first retaining ring 11 and the second retaining ring 12 clamp the inner ring of the bearing 6 to be measured. Among them, a first lock nut 13 and a gasket 14 are connected to the drive shaft 9 near the motor 3 side. A spring 15 is arranged between the gasket 14 and the first retaining ring 11. The spring 15 is sleeved on the drive shaft 9, and the first retaining ring 11 is clamped by relying on the elastic force of the spring. A second lock nut 16 is connected to the drive shaft 9 far from the motor 3 side, and the second lock nut 16 clamps the second retaining ring 12.

[0020] An outer end cover 17 is arranged on the outer side of the second retaining ring 12. The outer end cover 17 presses the outer ring of the bearing 6 to be measured. Among them, counterbores are machined on the periphery of the outer end cover 17, and the counterbore part is connected to the end face of the bearing bracket 5 through countersunk head screws.

[0021] An outer ring retaining ring 18 and an inner ring retaining ring 19 are arranged between the bearings 6 to be measured. The outer ring retaining ring 18 and the inner ring retaining ring 19 are arranged between the bearings 6 to be measured at intervals in sequence.

[0022] During the test, the motor 3 drives the drive shaft 9 to rotate the bearing for life test. When switching the bearing, only the bearing bracket 5 equipped with different models of bearings needs to be replaced to carry out the test, which shortens the disassembly and assembly time and improves the test efficiency.

[0023] The utility model is not limited to the described embodiments. Those skilled in the art can still make some corrections or changes without departing from the spirit of the utility model, that is, within the public scope. Therefore, the scope of the right protection of the utility model is subject to the scope defined by the claims.

Claims

1. A simple and rapid switching bearing life test bench, characterized in that: It includes a base. A motor bracket is connected to one side of the base, and multiple motors are installed on the motor bracket. A fixed seat is connected to the other side of the base. Multiple installation chambers are machined in the fixed seat. A detachable bearing bracket is connected in the installation chamber. A bearing chamber is machined in the bearing bracket. A number of bearings to be tested are arranged in the bearing chamber. A drive shaft passes through the middle of the bearings to be tested. One end of the drive shaft is connected to the output shaft of the motor through a coupling. A first retaining ring is arranged on the drive shaft close to the motor side, and a second retaining ring is arranged on the drive shaft far from the motor side. The first retaining ring and the second retaining ring clamp the inner ring of the bearings to be tested. An outer end cover is arranged outside the second retaining ring, and the outer end cover presses the outer ring of the bearings to be tested. An outer ring retaining ring and an inner ring retaining ring are arranged between the bearings to be tested, and the outer ring retaining ring and the inner ring retaining ring are arranged at intervals between the bearings to be tested in turn.

2. The simple and rapid bearing life test bench according to claim 1, characterized in that: Release grooves are machined on both sides of the installation chamber. Installation holes are arranged above the release grooves, and threaded holes are machined below the release grooves.

3. A simple and rapid-switching bearing life test bench according to claim 1, characterized in that: A first lock nut and a gasket are connected to the drive shaft close to the motor side. A spring is arranged between the gasket and the first retaining ring, and the spring is sleeved on the drive shaft.

4. A simple and rapid bearing life test bench according to claim 1, characterized in that: A second lock nut is connected to the drive shaft far from the motor side, and the second lock nut presses the second retaining ring.

5. A simple and quick-switching bearing life test bench according to claim 1, characterized in that: Counterbores are machined on the periphery of the outer end cover, and the counterbore parts are connected to the end face of the bearing bracket through countersunk head screws.

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