Rolling bearing oil pollution test life verification device

Abstract

The utility model discloses a rolling bearing oil pollution test life verification device, which comprises an upper cover, a base and a test shaft, the upper cover is covered on the base, a test cavity is formed between the upper cover and the base, lubricating oil is filled in the test cavity, the test shaft penetrates through the test cavity so as to install a bearing to be tested and then test, and the test shaft is connected with the test shaft. The test cavity in the base is provided with a polluted oil stirring device, the polluted oil stirring device is located below the test shaft, the lubricating oil is immersed into the position of the test shaft, and the polluted oil stirring device stirs the lubricating oil after impurities are injected into the polluted oil stirring device. According to the rolling bearing oil pollution test service life verification device provided by the utility model, impurities can be effectively added into lubricating oil in the test cavity through the arrangement of the polluted oil stirring device, so that the actual working condition can be better simulated.

Description

Technical Field

[0001] The utility model relates to a test life verification device, and more specifically to a rolling bearing oil pollution test life verification device. Background Art

[0002] The fatigue life test results of bearings can reveal the quality levels of bearing structure design, manufacturing process, material, and lubrication, etc., and are important indicators for comprehensively evaluating the quality of bearing products. The most commonly used lubrication methods for bearings during use are oil lubrication and grease lubrication. However, in the actual use of bearings, due to the influence of working conditions, the lubricating oil provided for the bearings may be doped with various impurities, which greatly affects the service life of the bearings. At present, the existing bearing test devices do not include the above-mentioned working conditions. Therefore, the life of the bearings tested by the existing bearing test devices may deviate greatly from the actual working conditions, thus affecting people's purchases. Summary of the Utility Model

[0003] Aiming at the deficiencies of the existing technology, the purpose of the utility model is to provide a rolling bearing oil pollution test life verification device with a smaller deviation between the test working conditions and the actual working conditions.

[0004] To achieve the above purpose, the utility model provides the following technical solution: A rolling bearing oil pollution test life verification device includes an upper cover, a base, and a test shaft. The upper cover covers the base, and a test cavity is formed between the upper cover and the base. The test cavity is filled with lubricating oil, and the test shaft passes through the test cavity to install the bearing to be tested for testing. Its characteristics are: a contaminated oil stirring device is provided in the test cavity of the base, the contaminated oil stirring device is located below the test shaft, and the lubricating oil submerges to the position of the test shaft. The contaminated oil stirring device injects impurities and stirs the lubricating oil to form contaminated oil.

[0005] As a further improvement of the utility model, the contaminated oil stirring device includes a stirring shaft, a long spray pipe, and a short spray pipe. The stirring shaft rotatably penetrates into the test cavity, and a gas distribution block is provided at the end of the stirring shaft. There are two long spray pipes and two short spray pipes. The ends of the long spray pipe and the short spray pipe are fixed to the gas distribution block and are distributed in a cross shape. Through holes are opened on the pipe walls of the long spray pipe and the short spray pipe to inject air and these impurities into the lubricating oil.

[0006] As a further improvement of the present utility model, a left outer bushing, a right outer bushing and a middle bushing are sleeved on the test shaft. The left outer bushing, the right outer bushing and the middle bushing form a test tooling. The middle bushing is located between the left outer bushing and the right outer bushing, and there is a gap between the end of the middle bushing and the ends of the left outer bushing and the right outer bushing for injecting lubricating oil. The inner ring of the bearing to be tested is sleeved on the test shaft, and the outer ring is inserted through the inner side wall of the left outer bushing, the right outer bushing or the middle bushing.

[0007] As a further improvement of the present utility model, a piston is liftably arranged in the upper cover. The lower end of the piston is fixed to a push rod, and the lower end of the push rod abuts against the middle bushing to apply a radial load to the middle bushing.

[0008] As a further improvement of the present utility model, the lower end of the push rod is of a hemispherical structure. A load groove is formed on the upper side surface of the middle bushing, and the lower end of the push rod abuts against the bottom of the load groove.

[0009] As a further improvement of the present utility model, an oil level gauge is fixed on the end surface of the left outer bushing facing away from the middle bushing. The oil level gauge is of an L-shaped tube structure. One end is inserted into the left outer bushing and communicated with the test cavity, and the other end is arranged vertically upward to display the oil level through the side wall of this end.

[0010] The beneficial effects of the present utility model are as follows. By providing the upper cover, the base and the test shaft, a test device for testing the bearing life can be effectively formed. Through the provision of the test cavity, lubricating oil can be effectively accommodated. Further, through the provision of the contaminated oil stirring device, a certain amount of impurities can be added to the lubricating oil, so that the actual working conditions of the bearing can be better approximated, and the accuracy of the test results can be further increased. Description of the Drawings

[0011] Figure 1 is the overall structure diagram of the rolling bearing oil pollution test life verification device of the present utility model;

[0012] Figure 2 is the cross-sectional schematic diagram of the rolling bearing oil pollution test life verification device of the present utility model;

[0013] Figure 3 is Figure 2 the overall structure diagram of the contaminated oil stirring device in Detailed Embodiments

[0014] The following will further describe the present utility model in detail with reference to the embodiments given in the drawings.

[0015] Refer to Figures 1 to 3As shown in the figure, a rolling bearing oil pollution test life verification device according to this embodiment includes an upper cover 1, a base 2, and a test shaft 3. The upper cover 1 is covered on the base 2, and a test cavity is formed between the upper cover 1 and the base 2. The test cavity is filled with lubricating oil. The test shaft 3 passes through the test cavity to install the bearing to be tested for the test. It is characterized in that: a contaminated oil stirring device 4 is provided in the test cavity of the base 2. The contaminated oil stirring device 4 is located below the test shaft 3, and the lubricating oil submerges to the position of the test shaft 3. The contaminated oil stirring device 4 injects impurities and stirs the lubricating oil to form contaminated oil. During the process of using the verification device of this embodiment, only the upper cover 1, the base 2, and the test shaft 3 need to be combined, and then the bearing to be tested is installed on the test shaft 3. In this way, the test of the bearing can be simply and effectively realized. Through the setting of the contaminated oil stirring device 4, impurities can be effectively added to the lubricating oil in the test cavity, so that the verification device can better approach the actual working conditions during the test.

[0016] As a specific improvement embodiment, the contaminated oil stirring device 4 includes a stirring shaft 41, a long spray pipe 42, and a short spray pipe 43. The stirring shaft 41 is rotatably inserted into the test cavity, and a gas distribution block 44 is provided at the end of the stirring shaft 41. There are two long spray pipes 42 and two short spray pipes 43. The ends of the long spray pipe 42 and the short spray pipe 43 are fixed to the gas distribution block 44 and are distributed in a cross shape. Through holes are opened on the pipe walls of the long spray pipe 42 and the short spray pipe 43 to inject air and these impurities into the lubricating oil. Through the setting of the above structure, air and these impurities can be injected into the lubricating oil through the long spray pipe 42 and the short spray pipe 43. Then, through the setting of the stirring shaft 41 and the gas distribution block 44, it can be simply and effectively realized that during the injection of air and these impurities, stirring is also carried out, so that the impurities can be better added to the lubricating oil and can better approach the actual working conditions.

[0017] As a specific embodiment of the improvement, a left outer bushing 31, a right outer bushing 32 and a middle bushing 33 are sleeved on the test shaft 3. The left outer bushing 31, the right outer bushing 32 and the middle bushing 33 constitute a test tooling. The middle bushing 33 is located between the left outer bushing 31 and the right outer bushing 32, and there is a gap between the end of the middle bushing 33 and the ends of the left outer bushing 31 and the right outer bushing 32 for injecting lubricating oil. The inner ring of the bearing to be tested is sleeved on the test shaft 3, and the outer ring is inserted through the inner side walls of the left outer bushing 31, the right outer bushing 32 or the middle bushing 33. Through the arrangement of the left outer bushing 31, the right outer bushing 32 and the middle bushing 33, a test tooling can be effectively formed, and the bearing can be well tested through this test tooling. And through the way that there is a gap between the end of the middle bushing 33 and the ends of the left outer bushing 31 and the right outer bushing 32 for injecting lubricating oil, it can better ensure that the bearing to be tested is always in a state with lubricating oil.

[0018] As a specific embodiment of the improvement, a piston 11 is liftably arranged in the upper cover 1. The lower end of the piston 11 is fixed to a push rod 12. The lower end of the push rod 12 abuts against the middle bushing 33 to apply a radial load to the middle bushing 33. Through the arrangement of the piston 11 and the push rod 12, a radial load can be simply and effectively applied to the middle bushing 33, thus simply and effectively increasing the test effect.

[0019] As a specific embodiment of the improvement, the lower end of the push rod 12 is of a hemispherical structure. A load groove 34 is formed on the upper side surface of the middle bushing 33. The lower end of the push rod 12 abuts against the bottom of the load groove 34. By adopting the hemispherical structure, when the push rod 12 moves downward to apply a radial load, an automatic alignment effect can be achieved, ensuring the accuracy of the direction of the applied radial load.

[0020] As a specific embodiment of the improvement, an oil level gauge 35 is fixed on the end surface of the left outer bushing 31 facing away from the middle bushing 33. The oil level gauge 35 is of an L-shaped tube structure. One end is inserted into the left outer bushing 31 and communicated with the test cavity, and the other end is arranged vertically upward to display the oil level through the side wall of this end. Through the arrangement of the oil level gauge 35, the oil level in the test cavity can be simply and effectively detected.

[0021] In summary, for the rolling bearing oil pollution test life verification device of this embodiment, by arranging a contaminated oil stirring device 4 in the test cavity, impurities can be effectively added to the lubricating oil in the test cavity, thus greatly increasing the degree of approximation between the verification working conditions of the verification device and the actual working conditions.

[0022] The above are only the preferred embodiments of the present utility model, and the protection scope of the present utility model is not limited to the above embodiments. All technical solutions falling within the concept of the present utility model belong to the protection scope of the present utility model. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present utility model, several improvements and refinements should also be regarded as the protection scope of the present utility model.

Claims

1. A rolling bearing oil contamination test life verification device, comprising an upper cover (1), a base (2) and a test shaft (3), wherein the upper cover (1) is arranged on the base (2), a test cavity is formed between the upper cover (1) and the base (2), the test cavity is filled with lubricating oil, and the test shaft (3) passes through the test cavity to install the bearing to be tested and then conduct the test, characterized in that: The test cavity in the base (2) is provided with a contaminated oil stirring device (4), the contaminated oil stirring device (4) is located below the test shaft (3), the lubricating oil is immersed to the position of the test shaft (3), and the contaminated oil stirring device (4) stirs the lubricating oil after injecting impurities to form contaminated oil.

2. The rolling bearing oil contamination test life verification device according to claim 1, characterized in that: The contaminated oil stirring device (4) comprises a stirring shaft (41), a long nozzle (42) and a short nozzle (43). The stirring shaft (41) can be rotatably inserted into the test cavity, and a gas diversion block (44) is provided at the end of the stirring shaft (41). Two long nozzles (42) and two short nozzles (43) are provided. The ends of the long nozzles (42) and the short nozzles (43) are fixed to the gas diversion block (44) and are distributed in a cross shape. Through holes are opened on the pipe walls of the long nozzles (42) and the short nozzles (43) to inject air and other impurities into the lubricating oil.

3. The rolling bearing oil contamination test life verification device according to claim 2, characterized in that: The test shaft (3) is sleeved with a left outer bushing (31), a right outer bushing (32) and a middle bushing (33); the left outer bushing (31), the right outer bushing (32) and the middle bushing (33) constitute a test fixture; the middle bushing (33) is located between the left outer bushing (31) and the right outer bushing (32); and a gap is left between the end of the middle bushing (33) and the ends of the left outer bushing (31) and the right outer bushing (32) for injection of lubricating oil; the inner ring of the bearing to be tested is sleeved on the test shaft (3), and the outer ring is connected to the inner side wall of the left outer bushing (31), the right outer bushing (32) or the middle bushing (33).

4. The rolling bearing oil contamination test life verification device according to claim 3, characterized in that: A piston (11) is provided in the upper cover (1) so as to be liftable. The lower end of the piston (11) is fixed by a push rod (12). The lower end of the push rod (12) abuts against a middle bushing (33) so as to apply a radial load to the middle bushing (33).

5. The rolling bearing oil contamination test life verification device according to claim 4, characterized in that: The lower end of the push rod (12) is a hemispherical structure, the upper side of the middle bushing (33) is provided with a load groove (34), and the lower end of the push rod (12) is connected to the bottom of the load groove (34).

6. The rolling bearing oil contamination test life verification device according to claim 5, characterized in that: An oil level gauge (35) is fixed on the end surface of the left outer bushing (31) facing away from the middle bushing (33). The oil level gauge (35) is an L-shaped tube structure, one end of which is inserted into the left outer bushing (31) and communicated with the test cavity, and the other end is vertically arranged upward to display the oil level through the side wall of the end.

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