Rolling bearing performance test device

Abstract

The utility model provides a kind of rolling bearing performance test device, including shell and the mandrel rotated by motor drive, the shell includes first shell part and the two second shell parts located in the axial both sides of first shell part, the clearance cooperation between the second shell part and first shell part is axially, first shell part and mandrel are formed with the first installation site for the installation of the cylindrical roller bearing to be measured between, second shell part and mandrel are formed with the second installation site for the installation of ball bearing between.The utility model provides a kind of rolling bearing performance test device of lower demand, wider applicability for the deficiency of prior art.

Description

Technical Field

[0001] This utility model relates to the field of bearing testing, and in particular to a rolling bearing performance testing device. Background Technology

[0002] As a core transmission component in industrial equipment, rolling bearings directly determine the overall performance and service life of the machine through their load-bearing capacity, operational accuracy, and reliability. Therefore, conducting precise performance tests on rolling bearings is crucial for ensuring their factory quality and application safety. Against this backdrop, the structural rationality, load adaptability, and testing accuracy of rolling bearing performance testing equipment become core factors affecting testing efficiency and result reliability. Current mainstream rolling bearing performance testing equipment, to prevent the bearing housing from tilting under bearing load and to prevent uneven loading, typically installs two sets of bearings in the middle of the device. This double-support point formed by the two sets of bearings ensures the stability of the bearing housing. However, in heavy-load verification scenarios, this setup places extremely high demands on the power of the testing equipment and the load-bearing strength of the mandrel. This not only increases the procurement and operating costs of the testing equipment but may also limit the testing needs of heavy-load bearings due to insufficient load-bearing capacity of the equipment or mandrel. Furthermore, it is structurally limited and differs significantly from actual usage scenarios, resulting in a narrow applicability. Utility Model Content

[0003] In view of the shortcomings of the existing technology, this utility model provides a rolling bearing performance testing device with lower requirements and wider applicability.

[0004] To achieve the above objectives, this utility model provides a rolling bearing performance testing device, comprising a housing and a spindle driven to rotate by a motor. The housing includes a first housing portion and two second housing portions located on both axial sides of the first housing portion. The second housing portions and the first housing portion are axially clearance-fitted. A first mounting position for mounting a cylindrical roller bearing to be tested is formed between the first housing portion and the spindle, and a second mounting position for mounting a ball bearing is formed between the second housing portion and the spindle.

[0005] The advantages of the above technical solution are as follows: by splitting the housing into a first housing part and two second housing parts on both sides, and allowing an axial clearance fit between the second housing part and the first housing part, when an off-center load occurs, the contact between the first housing part and the second housing part forms a limit, thus preventing the off-center load from damaging the cylindrical roller bearing under test. This allows a single bearing under test to be used to complete the test, reducing the performance requirements of the test component, and the data obtained is closer to the actual use scenario, making it more applicable. Furthermore, a ball bearing is installed between the second housing part and the mandrel, allowing the ball bearing to be tested together with the cylindrical roller bearing to bear the axial load. The ball bearing can also be tested simultaneously as needed, making the test device more versatile.

[0006] The present invention can be further configured such that: a gasket is provided between the first shell portion and the second shell portion, the gasket is screwed onto the second shell portion, and the second shell portion forms a clearance fit with the first shell portion through the gasket.

[0007] By further configuring additional shims with screw connections, the axial clearance between the two can be directly adjusted by selecting shims of different thicknesses, easily achieving the required clearance value, such as about 0.1mm on one side. This effectively avoids uneven clearance caused by installation errors, thereby reducing the risk of uneven load on the bearing housing, ensuring uniform bearing force during testing, and the screw connection facilitates adjustment and replacement.

[0008] The present invention can be further configured such that: the first housing portion is provided with first washers located on both sides, the first washers are detachably connected to the first housing portion, and the first washers are provided with abutting portions extending to the first mounting position.

[0009] By further configuring the first washer, which is detachably connected to the first housing, and providing an abutment portion extending to the first mounting position on the first washer, the abutment portion forms an axial abutment with the outer ring of the cylindrical roller bearing to be tested, effectively limiting the axial movement of the bearing during the test. The first washer can also be disassembled and replaced to adjust or remove the bearing to be tested from the first mounting position.

[0010] The present invention can be further configured such that a long groove for the displacement sensor to pass through is formed on the first housing and the first gasket.

[0011] By further configuring a long slot through which the displacement sensor can pass, the test load can be increased in advance before the test to check whether the axial displacement of the test bearing caused by the load conditions required for the test is within the allowable range. If the axial displacement of the bearing exceeds the allowable axial offset of the bearing raceway, the outer ring of the bearing can be pre-positioned and compensated by machining the thickness of the first washer on both sides of the outer ring. This ensures that the displacement of the test bearing during the test is within the allowable range of the bearing. After confirmation, the displacement sensor in the long slot can be removed for testing.

[0012] The present invention can be further configured such that: a second washer is provided on the mandrel between the first mounting position and the second mounting position, and the two ends of the second washer in axial direction respectively abut against the inner ring of the cylindrical roller bearing to be tested and the inner ring of the ball bearing.

[0013] With further design, the second washer located between the first and second mounting positions on the mandrel, through its axial ends respectively abutting against the inner rings of the cylindrical roller bearing and the ball bearing to be tested, restricts the axial movement of the bearings in the two mounting positions, ensures the spacing between the bearings, and has a simple structure that facilitates subsequent disassembly, replacement and adjustment.

[0014] The present invention can be further configured such that: the mandrel is provided with a retaining edge and a detachably connected tooling end cover, the retaining edge and the tooling end cover are respectively located at both ends of the mandrel, and the retaining edge and the tooling end cover respectively form an axial abutment fit with the inner rings of the two ball bearings.

[0015] By further designing the mandrel, the flanges and detachable tooling end caps at both ends form axial contact with the inner rings of the two ball bearings to be tested, respectively. The second washer, in conjunction with the second washer, limits the movement of the inner rings of the cylindrical roller bearing and the ball bearing to be tested. The detachable connection of the tooling end caps facilitates subsequent assembly and disassembly, ensuring the adaptability of the test device and making adjustments easier. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model; Figure 2 This is a schematic diagram of the internal structure of an embodiment of the present utility model; Figure 3 This is a schematic diagram showing the fit between the mandrel, the cylindrical roller bearing to be tested, and the ball bearing in this embodiment of the present invention; Figure 4 This is a schematic diagram of the structure of the first washer in an embodiment of this utility model; Wherein: housing 1; first housing part 11; second housing part 12; first mounting position 13; second mounting position 14; gasket 15; first washer 16; abutment part 161; long groove 17; spindle 2; second washer 21; flange 22; tooling end cover 23; cylindrical roller bearing to be tested 3; ball bearing 4. Detailed Implementation

[0017] An example of the implementation of the rolling bearing performance testing device of this utility model. Figure 1-4 As shown: It includes a housing 1 and a spindle 2 driven to rotate by a motor. The housing 1 includes a first housing portion 11 and two second housing portions 12 located on both sides of the first housing portion 11 in the axial direction. The second housing portions 12 and the first housing portion 11 are axially clearance fitted. A first mounting position 13 for mounting a cylindrical roller bearing 3 to be tested is formed between the first housing portion 11 and the spindle 2. A second mounting position 14 for mounting a ball bearing 4 is formed between the second housing portion and the spindle. In this embodiment, the ball bearing 4 is specifically an angular contact ball bearing.

[0018] A gasket 15 is provided between the first shell portion 11 and the second shell portion 12. The gasket 15 is screwed onto the second shell portion 12, and the second shell portion 12 forms a clearance fit with the first shell portion 11 through the gasket 15.

[0019] The first housing portion 11 is provided with first washers 16 located on both sides. The first washers 16 are detachably connected to the first housing portion 11. The first washers 16 are provided with abutting portions 161 extending to the first mounting position 13. In this embodiment, the abutting portions 161 are composed of multiple circumferentially distributed protrusions of the first washers 16 that extend outwards.

[0020] The first housing 11 and the first gasket 16 have a through-hole formed with a long groove 17 for the displacement sensor to pass through.

[0021] The spindle 2 is provided with a second washer 21 located between the first mounting position 13 and the second mounting position 14. The two ends of the second washer 21 in the axial direction respectively abut against the inner ring of the cylindrical roller bearing to be tested and the inner ring of the ball bearing.

[0022] The mandrel 2 is provided with a retaining edge 22 and a detachable tooling end cover 23. The retaining edge 22 and the tooling end cover 23 are respectively located at both ends of the mandrel 2, and the retaining edge 22 and the tooling end cover 23 respectively form an axial abutment fit with the inner rings of the two ball bearings 4.

[0023] The above examples are merely one preferred embodiment of this utility model. Ordinary variations and substitutions made by those skilled in the art within the scope of this utility model's technical solution are all included within the protection scope of this utility model.

Claims

1. A rolling bearing performance testing device, characterized in that: It includes a housing and a spindle driven by a motor. The housing includes a first housing portion and two second housing portions located on both axial sides of the first housing portion. The second housing portions and the first housing portion are axially clearance-fitted. A first mounting position for mounting a cylindrical roller bearing to be tested is formed between the first housing portion and the spindle. A second mounting position for mounting a ball bearing is formed between the second housing portion and the spindle.

2. The rolling bearing performance testing device according to claim 1, characterized in that: A gasket is provided between the first shell portion and the second shell portion. The gasket is screwed onto the second shell portion, and the second shell portion forms a clearance fit with the first shell portion through the gasket.

3. The rolling bearing performance testing apparatus according to claim 1 or 2, characterized in that: The first housing portion is provided with first washers located on both sides, and the first washers are detachably connected to the first housing portion. The first washers are provided with abutment portions extending to the first mounting position.

4. The rolling bearing performance testing device according to claim 3, characterized in that: A long groove is formed through the first housing and the first gasket for the displacement sensor to pass through.

5. The rolling bearing performance testing apparatus according to claim 1 or 2, characterized in that: The mandrel is provided with a second washer located between the first mounting position and the second mounting position. The two ends of the second washer in axial direction respectively abut against the inner ring of the cylindrical roller bearing to be tested and the inner ring of the ball bearing.

6. The rolling bearing performance testing device according to claim 5, characterized in that: The mandrel is provided with a flange and a detachable tooling end cover. The flange and the tooling end cover are respectively located at both ends of the mandrel, and the flange and the tooling end cover form an axial abutment fit with the inner rings of the two ball bearings.

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