Testing device for certain type of bearing

Abstract

The invention relates to the technical field of bearing test tools, relates to a certain type bearing test device, and aims to solve the problem that a bearing can bear a radial force and is not damaged in an original loading mode when the radial load of more than twenty thousands of N. According to the scheme, a bearing seat I and a bearing seat II are fixed in a bed body; the main shaft penetrates through the bearing seat I, the bearing seat III and the bearing seat II; the ball bearing is arranged at the front end of the main shaft in a sleeving mode and located between the front end of the first bearing seat and the main shaft, a gap is reserved between the ball bearing and the first bearing seat, the oil sealing pressing cover is fixed to the front end of the first bearing seat, and the side wall of the ball bearing is pressed by the oil sealing pressing cover. The first bearing seat, the second bearing seat and the third bearing seat are all connected with the main shaft through cylindrical roller bearings, the third bearing seat is radially loaded and pressed and limited, the main shaft is sleeved with the oil sealing flange, and the oil sealing flange is fixed to the rear portion of the second bearing seat, it can be guaranteed that the bearings can bear radial force and are not damaged, the structure is simple and compact, and mounting and dismounting are convenient.

Description

Technical Field

[0001] The present invention relates to the technical field of bearing test tooling, and particularly relates to a certain type of bearing test device. Background Art

[0002] Bearings are important and key basic components in equipment manufacturing, directly determining the performance, reliability, and lifespan of the equipment. Due to the harsh working environment of bearings, the complex load conditions they bear, and the requirement of being maintenance-free for a sufficiently long time or even the entire lifespan of the equipment, etc., during the design, development, production, and manufacturing processes, it is necessary to verify the bearings under corresponding simulated working conditions on a test machine to provide reliable test data for research, design, manufacturing, and use, and to provide a basis for the design, manufacturing, and use of bearings. With the progress and optimization of mechanical parts, the requirements for applying loads to bearings are getting higher and higher. When applying a radial load of more than two hundred thousand N to a bearing, the original loading method cannot ensure that the bearing can withstand this radial force without being damaged. Summary of the Invention

[0003] The object of the present invention: The present invention is to solve the problem that when applying a radial load of more than two hundred thousand N to a bearing, the original loading method cannot ensure that the bearing can withstand this radial force without being damaged. The present invention provides a certain type of bearing test device.

[0004] The object of the present invention is achieved as follows: A certain type of bearing test device, which includes a sealing oil gland, a ball bearing, a bearing seat 1, a bed body, a cylindrical roller bearing, radial loading, a main shaft, a sealing oil flange, a bearing seat 2, and a bearing seat 3;

[0005] Both the bearing seat 1 and the bearing seat 2 are fixed inside the bed body. The bearing seat 1 and the bearing seat 2 are arranged at intervals from front to back. The bearing seat 3 is located between the bearing seat 1 and the bearing seat 2. The main shaft passes through the bearing seat 1, the bearing seat 3, and the bearing seat 2; The ball bearing is sleeved on the front end of the main shaft and is located between the front end of the bearing seat 1 and the main shaft. There is a gap between the ball bearing and the bearing seat 1. The sealing oil gland is fixed at the front end of the bearing seat 1 and presses against the side wall of the ball bearing. Between the rear end of the bearing seat 1 and the main shaft, between the front end of the bearing seat 3 and the main shaft, between the rear end of the bearing seat 3 and the main shaft, and between the front end of the bearing seat 2 and the main shaft, a cylindrical roller bearing is respectively provided to connect the two. The radial loading is arranged in the middle of the bed body, and the radial loading presses against the bearing seat 3 and positions it. The sealing oil flange is sleeved outside the main shaft and fixed behind the bearing seat 2.

[0006] Further, there is a 1 mm gap between the ball bearing and the bearing seat 1.

[0007] Still further, a locking nut is threadedly connected to the front end of the main shaft. The locking nut is located in front of the first cylindrical roller bearing at the front end and presses against this cylindrical roller bearing.

[0008] Further, another locking nut is threadedly connected to the rear end of the main shaft. The locking nut is located behind the last cylindrical roller bearing and presses against the cylindrical roller bearing.

[0009] Still further, a coupling is connected to the rear end of the main shaft.

[0010] Further, a spacer sleeve sleeved on the main shaft or a shaft collar integrated outside the main shaft is arranged between any two cylindrical roller bearings.

[0011] Beneficial effects:

[0012] The leftmost ball bearing serves as a bearing positioning function. There is a gap between the outer ring of the ball bearing and the bearing housing to prevent the ball bearing from being damaged by a large radial load. The remaining four sets of bearings are cylindrical roller bearings, which play a load-bearing role. The radial load is applied through a radial loading device. Only the four sets of cylindrical roller bearings bear the radial load, and the ball bearing is not subject to the radial load; the overall test shafting is connected to the motorized spindle through a coupling and driven to rotate.

[0013] The invention can ensure that the bearing can withstand the radial force without being damaged, and the invention has a simple and compact structure, and is convenient for installation and disassembly.

[0014] Effective verification has been carried out through tests. High-load tests have been carried out on a certain type of bearing, and the maximum radial load borne by the bearing can reach 300,000 N. Description of the drawings

[0015] Figure 1 is a schematic diagram of a certain type of bearing test device;

[0016] Figure 2 is Figure 1 the left view of;

[0017] Figure 3 is Figure 2 the schematic view in the A-A direction of;

[0018] In the figure:

[0019] 1. Oil seal gland; 2. Ball bearing; 3. Locking nut; 4. First bearing housing; 5. Bed; 6. Cylindrical roller bearing; 7. Radial loading; 8. Main shaft; 9. Oil seal flange; 10. Second bearing housing; 11. Third bearing housing; 12. Coupling. Specific embodiments

[0020] Specific embodiment 1: A certain type of bearing test device, which includes an oil seal gland 1, a ball bearing 2, a first bearing housing 4, a bed 5, a radial loading 7, a main shaft 8, an oil seal flange 9, a second bearing housing 10, and a third bearing housing 11;

[0021] The first bearing housing 4 and the second bearing housing 10 are both fixed inside the bed body 5. The first bearing housing 4 and the second bearing housing 10 are arranged at intervals from front to back. The third bearing housing 11 is located between the first bearing housing 4 and the second bearing housing 10. The main shaft 8 passes through the first bearing housing 4, the third bearing housing 11 and the second bearing housing 10. The ball bearing 2 is sleeved at the front end of the main shaft 8 and is located between the front end of the first bearing housing 4 and the main shaft 8. There is a gap between the ball bearing 2 and the first bearing housing 4. The oil seal gland 1 is fixed at the front end of the first bearing housing 4, and the oil seal gland 1 presses against the side wall of the ball bearing 2. A cylindrical roller bearing 6 is respectively arranged between the rear end of the first bearing housing 4 and the main shaft 8, between the front end of the third bearing housing 11 and the main shaft 8, between the rear end of the third bearing housing 11 and the main shaft 8, and between the front end of the second bearing housing 10 and the main shaft 8 to connect the two. The radial loading 7 is arranged in the middle of the bed body 5. The radial loading 7 presses against the third bearing housing 11 and positions it. The oil seal flange 9 is sleeved outside the main shaft 8 and is fixed behind the second bearing housing 10.

[0022] In this embodiment:

[0023] The oil seal gland: While pressing the left bearing, it prevents the lubricating oil from being thrown out.

[0024] The ball bearing: Plays an axial positioning role.

[0025] The first / second / third bearing housing: Fixes the cylindrical roller bearing.

[0026] The bed body: Fixes the overall device.

[0027] The cylindrical roller bearing: Bears the radial load.

[0028] The radial loading: Applies a radial force to the bearing.

[0029] The main shaft: Drives the bearing to rotate.

[0030] The oil seal flange: Seals the oil for the right bearing to prevent the lubricating oil from being thrown out.

[0031] Specific embodiment two: A certain type of bearing test device. There is a 1-mm gap between the ball bearing 2 and the first bearing housing 4.

[0032] In this embodiment: There is a 1-mm gap between the ball bearing and the first bearing housing, and there is a gap between the outer ring of the bearing and the first bearing housing to prevent the bearing from being damaged due to a large radial load.

[0033] Other embodiments are the same as specific embodiment one.

[0034] Specific embodiment three: A certain type of bearing test device. A locking nut 3 is threadedly connected to the front end of the main shaft 8. The locking nut 3 is located in front of the first cylindrical roller bearing 6 at the front end and presses against the cylindrical roller bearing 6.

[0035] In this embodiment: Another locking nut is threadedly connected to the front end of the main shaft, and the locking nut applies a moment to the cylindrical roller bearing.

[0036] Other embodiments are the same as the first specific embodiment.

[0037] Specific embodiment four: A certain type of bearing test device, another locking nut 3 is threadedly connected to the rear end of the main shaft 8, and the locking nut 3 is located behind the last cylindrical roller bearing 6 and presses the cylindrical roller bearing 6.

[0038] In this embodiment: Another locking nut is threadedly connected to the rear end of the main shaft, and the locking nut applies a moment to the cylindrical roller bearing.

[0039] Other embodiments are the same as the first specific embodiment.

[0040] Specific embodiment five: A certain type of bearing test device, a coupling 12 is connected to the rear end of the main shaft 8.

[0041] In this embodiment: A coupling is connected to the rear end of the main shaft, and the entire test shafting is connected to the motorized spindle through the coupling to drive rotation.

[0042] Other embodiments are the same as the first specific embodiment.

[0043] Specific embodiment six: A certain type of bearing test device, a spacer sleeved on the main shaft 8 or a shaft collar integrated outside the main shaft 8 is arranged between any two cylindrical roller bearings 6.

[0044] In this embodiment: A spacer sleeved on the main shaft or a shaft collar integrated outside the main shaft is arranged between any two cylindrical roller bearings, and both are used to limit the position of the cylindrical roller bearings.

[0045] Other embodiments are the same as the first specific embodiment.

Claims

1. A certain type of bearing test device, characterized in that: It comprises an oil sealing gland (1), a ball bearing (2), a bearing seat 1 (4), a bed (5), a radial load (7), a main shaft (8), an oil sealing flange (9), a bearing seat 2 (10) and a bearing seat 3 (11); The bearing seat 1 (4) and the bearing seat 2 (10) are both fixed inside the bed body (5). The bearing seat 1 (4) and the bearing seat 2 (10) are arranged at intervals from front to back. The bearing seat 3 (11) is located between the bearing seat 1 (4) and the bearing seat 2 (10). The main shaft (8) passes through the bearing seat 1 (4), the bearing seat 3 (11) and the bearing seat 2 (10). The ball bearing (2) is sleeved on the front end of the main shaft (8) and is located between the front end of the bearing seat 1 (4) and the main shaft (8). A gap is left between the ball bearing (2) and the bearing seat 1 (4). The oil pressure cover (1) is fixed on the bearing seat 1 (4). The front end of the bed (5) is provided with a cylindrical roller bearing (6), and the oil sealing cover (1) presses the side wall of the ball bearing (2). A cylindrical roller bearing (6) is respectively arranged between the rear end of the bearing seat 1 (4) and the main shaft (8), between the front end of the bearing seat 3 (11) and the main shaft (8), between the rear end of the bearing seat 3 (11) and the main shaft (8), and between the front end of the bearing seat 2 (10) and the main shaft (8) to connect the two. A radial load (7) is arranged in the middle of the bed (5). The radial load (7) presses the bearing seat 3 (11) and limits it. The oil sealing flange (9) is mounted on the outside of the main shaft (8) and fixed to the rear of the bearing seat 2 (10).

2. A certain type of bearing test device according to claim 1, characterized in that: A clearance of 1 mm is left between the ball bearing (2) and the bearing seat 1 (4).

3. A certain type of bearing test device according to claim 1, characterized in that: A locking nut (3) is threadedly connected to the front end of the main shaft (8). The locking nut (3) is located in front of the first cylindrical roller bearing (6) at the front end and presses the cylindrical roller bearing (6).

4. A certain type of bearing test device according to claim 1, characterized in that: Another locking nut (3) is threadedly connected to the rear end of the main shaft (8). The locking nut (3) is located behind the rearmost cylindrical roller bearing (6) and presses the cylindrical roller bearing (6).

5. A certain type of bearing testing device according to claim 1, characterized in that: The rear end of the main shaft (8) is connected with a coupling (12).

6. A certain type of bearing test device according to claim 1, characterized in that: A spacer sleeve mounted on the main shaft (8) or a shaft ring integrated outside the main shaft (8) is arranged between any two cylindrical roller bearings (6).

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