Bearing testing device

Abstract

The utility model discloses a bearing testing device, which comprises a substrate and a bearing main body, the substrate is provided with a power frame and two groups of load frames, the top end of the power frame is provided with a laser distance measuring sensor, one side of the power frame is provided with a motor, an output shaft of the motor is connected with a driving frame, the driving frame is connected with a rotating shaft mechanism, and the rotating shaft mechanism is connected with the bearing main body. The rotating shaft mechanism comprises a base disc, a first supporting piece and a second supporting piece are arranged on the base disc, a conical adjusting block is arranged between the first supporting piece and the second supporting piece, a screw rod is arranged at one end of the conical adjusting block, and the rotating shaft mechanism is sleeved with the bearing body; the distance between the first supporting piece and the second supporting piece can be adjusted according to the size of a bearing inner ring, the device is suitable for fixing bearings of different specifications and sizes, the driving force in actual use is simulated through the rotating shaft mechanism, the load in actual use is simulated through the hydraulic cylinder, and the variable quantity of a bearing structure is recorded through the laser distance measuring sensor.

Description

Technical Field

[0001] The utility model relates to the technical field of bearing testing, in particular to a bearing testing device. Background Art

[0002] Bearings are an important component in mechanical equipment. Their main function is to support the mechanical rotating body, reduce the friction coefficient during its movement, and ensure its rotation accuracy. Bearings play an irreplaceable role in the transmission of torque power in both heavy and light industries. Once bearing damage occurs, it may bring serious consequences, so it is necessary to test and evaluate the bearing stress.

[0003] There are various types of bearings, and different types of bearings have different sizes. When testing the bearings, the inner ring of the bearing needs to be fixed. The existing testing device cannot quickly fix various types of bearings and has poor versatility. Utility Model Content

[0004] The purpose of the utility model is to provide a bearing testing device to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a bearing testing device, comprising a base plate and a bearing body, a power frame and two sets of load frames are arranged on the base plate, a laser ranging sensor is installed on the top of the power frame, a motor is installed on one side of the power frame, the output shaft of the motor is connected to the drive frame, the drive frame is connected to the rotating shaft mechanism, the rotating shaft mechanism comprises a base plate, a first support member and a second support member are arranged on the base plate, and a conical adjustment block is arranged between the first support member and the second support member, a screw is arranged at one end of the conical adjustment block, and the bearing body is sleeved on the rotating shaft mechanism.

[0006] A slide groove is provided on the end surface of the base, the first support member and the second support member are slidably connected to the slide groove of the base, and elastic members are provided between the inner walls of the first support member and the second support member and the base.

[0007] Wherein, the inner side surfaces of the first support member and the second support member are both provided with tapered surfaces.

[0008] Wherein, an anti-skid layer is disposed on the outer side surfaces of the first support member and the second support member, and the anti-skid layer is bonded and fixed to the first support member and the second support member.

[0009] Wherein, the two groups of load racks are respectively located on two sides of the rotating shaft mechanism.

[0010] Wherein, a hydraulic cylinder is installed on the load frame.

[0011] Wherein, one end of the hydraulic cylinder is connected to a pressure sensor, and one end of the pressure sensor is connected to a pressure plate.

[0012] Wherein, the laser ranging sensor is located directly above the bearing body.

[0013] Wherein, the two groups of pressure plates are symmetrically arranged.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1. The utility model has an adjustable spacing between the first support member and the second support member. The screw rod is manually rotated to drive the conical adjustment block to rotate synchronously, and the position of the conical adjustment block is adjusted. During the movement of the conical adjustment block, the first support member and the second support member are driven to slide along the slide groove in opposite directions, and the elastic member is deformed accordingly, so that the spacing between the first support member and the second support member can be quickly adjusted. The spacing between the first support member and the second support member can be adjusted according to the size of the inner ring of the bearing, and is suitable for fixing bearing bodies of different specifications and sizes.

[0016] 2. The utility model simulates the driving force in actual use through the rotating shaft mechanism, simulates the load in actual use through the hydraulic cylinder, and records the change of the bearing structure through the laser ranging sensor to realize the test, which is conducive to obtaining intuitive test data. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the assembly of the bearing body of the utility model;

[0019] Figure 3 This is a schematic diagram of the structure of the power frame of the utility model;

[0020] Figure 4 It is a structural schematic diagram of the rotating shaft mechanism of the utility model;

[0021] Figure 5 for Figure 3 A partial enlarged view of area A in the middle;

[0022] Figure 6 It is a schematic diagram of the adjustment of the rotating shaft mechanism of the utility model.

[0023] In the figure: 1. base plate; 2. power frame; 3. load frame; 4. laser ranging sensor; 5. motor; 6. drive frame; 7. shaft mechanism; 8. base plate; 9. first support member; 10. second support member; 11. conical adjustment block; 12. screw; 13. elastic member; 14. slide groove; 15. anti-skid layer; 16. hydraulic cylinder; 17. pressure sensor; 18. pressure plate; 19. bearing body. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] See also Figure 1-6 The utility model provides a technical solution: a bearing testing device, including a base plate 1 and a bearing body 19, a power frame 2 and two sets of load frames 3 are arranged on the base plate 1, a laser ranging sensor 4 is installed on the top of the power frame 2, a motor 5 is installed on one side of the power frame 2, the output shaft of the motor 5 is connected to the drive frame 6, the drive frame 6 is connected to the shaft mechanism 7, the shaft mechanism 7 includes a base plate 8, a first support member 9 and a second support member 10 are arranged on the base plate 8, and a conical adjustment block 11 is arranged between the first support member 9 and the second support member 10, a screw 12 is arranged at one end of the conical adjustment block 11, and the bearing body 19 is sleeved on the shaft mechanism 7.

[0026] The motor 5 is used as a power source to simulate the driving force in actual use, and the driving force is used to drive the shaft mechanism 7, which drives the bearing body 19, and the rotation speed of the motor 5 is adjustable.

[0027] The two groups of load racks 3 apply load force to the outer ring of the bearing body 19 to simulate the load in actual use, and the load force is adjustable.

[0028] Among them, the bearing body 19 is sleeved on the rotating shaft mechanism 7, the first support member 9 and the second support member 10 are in close contact with the inner ring of the bearing body 19 to fix the inner ring of the bearing body 19, and the distance between the first support member 9 and the second support member 10 is adjustable, which is suitable for fixing bearing bodies 19 of different specifications and sizes.

[0029] Among them, the laser ranging sensor 4 is used for distance measurement. During the test, the outer ring of the bearing body 19 will be deformed due to the load. The laser ranging sensor 4 measures the final distance from itself to the outer ring of the bearing, and compares the difference between the final distance and the initial distance to obtain the deformation amount during the bearing test.

[0030] Among them, a slide groove 14 is opened on the end surface of the base plate 8, the first support member 9 and the second support member 10 are slidingly connected to the slide groove 14 of the base plate 8, and an elastic member 13 is arranged between the inner wall of the first support member 9 and the second support member 10 and the base plate 8.

[0031] The first support member 9 and the second support member 10 are both provided with tapered surfaces on their inner side surfaces.

[0032] When adjusting the distance between the first support member 9 and the second support member 10, Figure 6 As shown, the screw rod 12 is manually rotated to drive the conical adjustment block 11 to rotate synchronously, and the position of the conical adjustment block 11 is adjusted. During the movement of the conical adjustment block 11, the first support member 9 and the second support member 10 are driven to slide along the slide groove 14 in opposite directions, and the elastic member 13 is deformed accordingly, so as to realize the rapid adjustment of the distance between the first support member 9 and the second support member 10. The distance between the first support member 9 and the second support member 10 can be adjusted according to the size of the inner ring of the bearing, so that the first support member 9 and the second support member 10 are close to the inner wall of the inner ring of the bearing, so as to realize the fixation of the inner ring of the bearing body 19, and the bearing body 19 is firmly sleeved and fixed on the shaft mechanism 7. When the motor 5 is working, it drives the driving frame 6, and drives the shaft mechanism 7 through the driving frame 6. The shaft mechanism 7 drives the inner ring of the bearing body 19 fixed thereto to rotate synchronously, and simulates the driving force in the actual use process during the test.

[0033] Among them, an anti-skid layer 15 is provided on the outer surface of the first support member 9 and the second support member 10, and the anti-skid layer 15 and the first support member 9 and the second support member 10 are bonded and fixed. When the bearing body 19 is fixed, the anti-skid layer 15 of the first support member 9 and the second support member 10 are in close contact with the inner wall of the bearing inner ring, thereby increasing the contact friction and improving the test stability.

[0034] The two groups of load frames 3 are respectively located on both sides of the rotating shaft mechanism 7 , and apply load force to the outer ring of the bearing on both sides of the bearing body 19 .

[0035] Wherein, a hydraulic cylinder 16 is installed on the load frame 3 .

[0036] Among them, one end of the hydraulic cylinder 16 is connected to the pressure sensor 17, and one end of the pressure sensor 17 is connected to the pressure plate 18. When the hydraulic cylinder 16 is working, it drives the pressure sensor 17, and drives the pressure plate 18 through the pressure sensor 17, so that the pressure plate 18 is tightly attached to the outer ring of the bearing. During the test, the inner ring of the bearing rotates under the drive of the rotating shaft mechanism 7, and the load force is applied to the outer ring of the bearing, and the outer ring of the bearing remains fixed.

[0037] The pressure sensor 17 monitors the load force applied to the outer ring of the bearing in real time. During the test, the pressure value is recorded, and the load force is adjusted by the hydraulic strength of the hydraulic cylinder 16.

[0038] Among them, the laser ranging sensor 4 is located directly above the bearing body 19. The laser ranging sensor 4 monitors the distance between itself and the outer ring of the bearing in real time. During the testing of the bearing body 19, when the bearing body 19 rotates, it will be subjected to axial and radial forces at the same time, and its structure will undergo slight deformation. When the bearing structure undergoes slight deformation, its outer ring will deform, and the distance of the outer ring relative to the laser ranging sensor 4 will change accordingly. The laser ranging sensor 4 records the measured value, compares the difference between the final distance and the initial distance, and obtains the deformation amount during the bearing test, which is conducive to obtaining intuitive test data.

[0039] The two groups of pressure plates 18 are symmetrically arranged, so that when simulating a load, the distribution of the load force is more uniform.

[0040] Working principle: During the test, the inner ring of the bearing body 19 is sleeved on the shaft mechanism 7, and the screw 12 is manually rotated to adjust the distance between the first support member 9 and the second support member 10 according to the size of the inner ring, so that the first support member 9 and the second support member 10 are in close contact with the inner wall of the inner ring of the bearing, and the inner ring of the bearing body 19 is fixed. The laser ranging sensor 4 is located directly above the bearing body 19, and the hydraulic cylinder 16 works to drive the pressure sensor 17, and the pressure sensor 17 drives the pressure plate 18 to make the pressure plate 18 in close contact with the outer ring of the bearing to simulate the load in actual use. The load force is adjusted by the hydraulic strength of the hydraulic cylinder 16, and the motor 5 works to drive the drive frame 6, and the drive frame 6 drives the shaft mechanism 7, and the shaft mechanism 7 drives the inner ring of the bearing body 19 fixed thereto. The bearing body 19 is rotated in steps, and the driving force in actual use is simulated during the test. The driving force is adjusted by the speed of the motor 5. During the test, the inner ring of the bearing rotates under the drive of the shaft mechanism 7, and the load force is applied to the outer ring of the bearing. The outer ring of the bearing remains fixed, and the laser ranging sensor 4 monitors the distance between itself and the outer ring of the bearing in real time. During the test of the bearing body 19, when the bearing body 19 rotates, it will be subjected to axial and radial forces at the same time, and its structure will undergo slight deformation. When the bearing structure undergoes slight deformation, its outer ring will deform, and the distance of the outer ring relative to the laser ranging sensor 4 will change accordingly. The measured value is recorded by the laser ranging sensor 4, and the difference between the final distance and the initial distance is compared to obtain the deformation of the bearing during the test.

[0041] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A bearing testing device, comprising a base plate (1) and a bearing body (19), Features: A power frame (2) and two groups of load frames (3) are arranged on the base plate (1), a laser distance sensor (4) is installed on the top of the power frame (2), a motor (5) is installed on one side of the power frame (2), an output shaft of the motor (5) is connected to a drive frame (6), the drive frame (6) is connected to a rotating shaft mechanism (7), the rotating shaft mechanism (7) comprises a base plate (8), a first support member (9) and a second support member (10) are arranged on the base plate (8), a conical adjustment block (11) is arranged between the first support member (9) and the second support member (10), a screw rod (12) is arranged at one end of the conical adjustment block (11), and a bearing body (19) is sleeved on the rotating shaft mechanism (7).

2. A bearing testing device according to claim 1, Features: A slide groove (14) is provided on the end surface of the base plate (8); the first support member (9) and the second support member (10) are slidably connected to the slide groove (14) of the base plate (8); and an elastic member (13) is provided between the inner walls of the first support member (9) and the second support member (10) and the base plate (8).

3. A bearing testing device according to claim 1, Features: The inner side surfaces of the first support member (9) and the second support member (10) are both provided with tapered surfaces.

4. A bearing testing device according to claim 1, Features: An anti-slip layer (15) is provided on the outer side surfaces of the first support member (9) and the second support member (10), and the anti-slip layer (15) is bonded and fixed to the first support member (9) and the second support member (10).

5. A bearing testing device according to claim 1, Features: The two groups of load racks (3) are respectively located on two sides of the rotating shaft mechanism (7).

6. A bearing testing device according to claim 1, Features: A hydraulic cylinder (16) is installed on the load frame (3).

7. A bearing testing device according to claim 6, Features: One end of the hydraulic cylinder (16) is connected to a pressure sensor (17), and one end of the pressure sensor (17) is connected to a pressure plate (18).

8. A bearing testing device according to claim 1, Features: The laser distance measuring sensor (4) is located directly above the bearing body (19).

9. A bearing testing device according to claim 7, Features: The two groups of pressure plates (18) are symmetrically arranged.

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