Endurance test bench for hydrogen embrittlement test of bearing

Abstract

A bearing hydrogen embrittlement test durability test bench comprises a first bearing seat and a second bearing seat, a shaft is arranged between the first bearing seat and the second bearing seat, the shaft is connected with the first bearing seat and the second bearing seat through a working bearing, bearings to be tested are installed on the shaft, a first shaft sleeve is arranged between the bearings to be tested, and a second shaft sleeve is arranged between the bearings to be tested and the working bearing. The first shaft sleeve and the second shaft sleeve are sleeved on the shaft, the first shaft sleeve is sleeved with a spring, two ends of the spring press a bearing to be tested, a bearing sleeve is arranged on the outer side of the bearing to be tested, end covers are mounted on two sides of the bearing sleeve, air holes are formed in the end covers and communicated with the bearing to be tested in the bearing sleeve, and sealing gaskets are arranged between the end covers and the bearing sleeve. And a sealing piece is mounted in the middle of the end cover. According to the utility model, the existing rack is improved, and the sealing gasket and the sealing element are added, so that the operation condition and the service life of the bearing in an environment full of hydrogen can be simulated, and the test requirements are met.

Description

Technical Field

[0001] The utility model relates to the technical field of bearing testing, and specifically refers to a bearing hydrogen embrittlement test durability test bench. Background Technique

[0002] The hydrogen embrittlement test is a test method for evaluating the brittle fracture of materials. It is mainly used to evaluate the brittle fracture tendency of materials when exposed to a hydrogen environment. Wind power equipment can generate hydrogen through the process of electrolyzing water, which is called wind power hydrogen production. Wind power hydrogen production uses the electricity generated by a wind farm to decompose water molecules through electrolysis to produce hydrogen and oxygen. This technology not only helps to reduce the dependence on fossil fuels but also can produce clean hydrogen energy, which is of great significance for promoting energy transformation and achieving the carbon neutrality goal.

[0003] Therefore, before installing the bearing on the wind power equipment, it is necessary to test its hydrogen embrittlement test, while the existing test bench can only meet the life test of ordinary bearings and cannot perform the hydrogen embrittlement test of bearings. Content of the Utility Model

[0004] The technical problem to be solved by the utility model is to provide a bearing hydrogen embrittlement test durability test bench in view of the above-mentioned deficiencies of the prior art.

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

[0006] A bearing hydrogen embrittlement test durability test bench includes a first bearing seat and a second bearing seat. A shaft is arranged between the first bearing seat and the second bearing seat. The shaft is connected to the first bearing seat and the second bearing seat through working bearings. A bearing to be tested is installed on the shaft. A first sleeve is arranged between the bearings to be tested. A second sleeve is arranged between the bearing to be tested and the working bearing. The first sleeve and the second sleeve are sleeved on the shaft. A spring is sleeved outside the first sleeve, and both ends of the spring are pressed against the bearing to be tested. A bearing sleeve is arranged outside the bearing to be tested. End covers are installed on both sides of the bearing sleeve. Air holes are opened on the end covers and are communicated with the bearing to be tested inside the bearing sleeve. A sealing gasket is arranged between the end cover and the bearing sleeve. A sealing member is installed in the middle of the end cover.

[0007] Furthermore, a shoulder is arranged at one end of the shaft to abut against the working bearing inside the first bearing seat. A third sleeve is sleeved at the other end of the shaft. One end of the third sleeve abuts against the working bearing inside the second bearing seat. A nut is connected to the shaft, and the nut locks the third sleeve.

[0008] Furthermore, an axial pressing block is arranged on the first bearing seat, and the axial pressing block abuts against the working bearing.

[0009] Furthermore, gaskets are arranged between both ends of the spring and the bearing to be tested.

[0010] Further, the seal is a double-lip stainless steel oil seal. The outer side of the double-lip stainless steel oil seal is adhesively bonded to the end cover, and the inner side seals with the second shaft sleeve through the sealing lips.

[0011] Compared with the prior art, the bearing hydrogen embrittlement test durability test bench of the present utility model improves the existing test bench by adding a gasket and a seal, so as to simulate the operation condition and service life of the bearing in an environment filled with hydrogen, meeting the test requirements. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0013] Figure 2 is the structural schematic diagram of the axial pressing block of the present utility model;

[0014] Figure 3 is the structural schematic diagram of the end cover of the present utility model;

[0015] Figure 4 is the external structural schematic diagram of the present utility model;

[0016] Among them, 1. First bearing seat, 2. Second bearing seat, 3. Shaft, 4. Working bearing, 5. Bearing to be tested, 6. First shaft sleeve, 7. Second shaft sleeve, 8. Shoulder, 9. Third shaft sleeve, 10. Nut, 11. Spring, 12. Gasket, 13. Axial pressing block, 14. Bearing sleeve, 15. End cover, 16. Air hole, 17. Gasket, 18. Seal, 131. Pressing foot, 151. Mounting hole. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] The technical solutions in the embodiments of the present utility model will be clearly and completely described below.

[0018] As Figure 1 and Figure 4 shown, a bearing hydrogen embrittlement test durability test bench includes a first bearing seat 1 and a second bearing seat 2. A shaft 3 is arranged between the first bearing seat 1 and the second bearing seat 2. The shaft 3 is connected to the first bearing seat 1 and the second bearing seat 2 through a working bearing 4. The bearing to be tested 5 is mounted on the shaft 3. In this embodiment, two bearings to be tested 5 are mounted on the shaft 3. A first shaft sleeve 6 is arranged between the bearings to be tested 5. A second shaft sleeve 7 is arranged between the bearing to be tested 5 and the working bearings 4 on both sides. The first shaft sleeve 6 and the second shaft sleeve 7 are sleeved on the shaft 3. One end of the shaft 3 is provided with a shoulder 8 that abuts against the working bearing 4 inside the first bearing seat 1. The other end of the shaft 3 is sleeved with a third shaft sleeve 9. One end of the third shaft sleeve 9 abuts against the working bearing 4 inside the second bearing seat 2. A nut 10 is connected to the shaft 3, and the nut 10 locks the third shaft sleeve 9. The first shaft sleeve 6, the second shaft sleeve 7, the third shaft sleeve 9, and the shoulder 8 of the shaft respectively abut against the inner rings of the bearing to be tested 5 and the working bearings 4.

[0019] A spring 11 is sleeved outside the first bushing 6. Both ends of the spring 11 press against the bearing under test 5. Gaskets 12 are arranged between both ends of the spring 11 and the bearing under test 5. The pre-tightening force provided during the spring pressing process causes the gasket to press against the outer ring of the bearing under test 5, eliminating end play. An axial pressing block 13 is arranged on the first bearing housing 1. As Figure 2 shown, press feet 131 are arranged around the axial pressing block 13. Under an external pressing force, the press feet 131 of the axial pressing block 13 abut against the outer ring of the working bearing 4.

[0020] A bearing sleeve 14 is arranged outside the bearing under test 5. End caps 15 are installed on both sides of the bearing sleeve 14. Air holes 16 are opened on the end caps 15 and communicate with the bearing under test 5 inside the bearing sleeve 14. As Figure 3 shown, three mounting holes 151 are opened on the end cap 15. The mounting holes 151 are fixed to the bearing sleeve 14 by screws. A gasket 17 is arranged between the end cap 15 and the bearing sleeve 14. A seal 18 is installed in the middle of the end cap 15. In this embodiment, the seal 18 is a double-lip stainless steel oil seal. The double-lip stainless steel oil seal can seal water and air. The outside of the double-lip stainless steel oil seal is adhesively bonded to the end cap 15, and the inside is sealed with the second bushing 7 through the sealing lips.

[0021] During use, hydrogen is injected through the air hole 16 on one side end cap 15. After the air inside the bearing under test 5 is discharged, the air hole 16 on the other side end cap 15 is blocked to maintain the hydrogen pressure. Then, the bearing under test 5 is driven by the shaft 3 to conduct a durability test.

[0022] The present utility model is not limited to the described embodiments. Those skilled in the art can still make some modifications or changes without departing from the spirit and disclosure scope of the present utility model. Therefore, the scope of the protection of the rights of the present utility model shall be subject to the scope defined by the claims.

Claims

1. A bearing hydrogen embrittlement test durability test bench, comprising a first bearing seat and a second bearing seat, wherein a shaft is arranged between the first bearing seat and the second bearing seat, and the shaft is connected to the first bearing seat and the second bearing seat through working bearings, and is characterized in that: A bearing under test is mounted on the shaft. A first sleeve is arranged between the bearings under test. A second sleeve is arranged between the bearing under test and the working bearing. The first sleeve and the second sleeve are sleeved on the shaft. A spring is sleeved outside the first sleeve. Both ends of the spring press against the bearing under test. A bearing sleeve is arranged outside the bearing under test. End covers are installed on both sides of the bearing sleeve. Air holes are opened on the end covers and communicate with the bearing under test inside the bearing sleeve. A gasket is arranged between the end cover and the bearing sleeve. A seal is installed in the middle of the end cover.

2. The bearing hydrogen embrittlement test durability test bench according to claim 1, characterized in that: A shoulder is arranged at one end of the shaft to abut against the working bearing in the first bearing seat. A third sleeve is sleeved on the other end of the shaft. One end of the third sleeve abuts against the working bearing in the second bearing seat. A nut is connected to the shaft, and the nut locks the third sleeve.

3. The bearing hydrogen embrittlement test durability test bench according to claim 1, characterized in that: An axial pressing block is arranged on the first bearing seat, and the axial pressing block abuts against the working bearing.

4. The bearing hydrogen embrittlement test durability test bench according to claim 1, wherein: Gaskets are arranged between both ends of the spring and the bearing under test.

5. The bearing hydrogen embrittlement test durability test bench according to claim 1, characterized in that: The seal adopts a double-lip stainless steel oil seal. The outside of the double-lip stainless steel oil seal is adhesively bonded to the end cover, and the inside is sealed with the second sleeve through the sealing lips.

Images