Testing machine for reproducing white spalling phenomenon of bearing

Abstract

The utility model discloses a testing machine for reproducing the white peeling phenomenon of a bearing, which comprises a testing stand, a belt pulley bearing support is arranged at the upper end of the testing stand, a plurality of bearing seats for placing belt pulley bearings are arranged on the belt pulley bearing support, each bearing seat is provided with a belt pulley bearing, and the belt pulley bearing is arranged on the belt pulley bearing support. A driving motor used for driving a belt pulley is arranged at the lower end of the test bed, a driving wheel is arranged at the position, corresponding to a belt pulley bearing, of one end of the driving motor, a belt is in transmission connection between the driving wheel and the belt pulley bearing, the test bed is provided with a plurality of supporting table legs, and elastic pieces are arranged between the supporting table legs and the test bed. The testing machine can simulate the testing environment of belt pulley bearing speed change and vibration testing, the simulation effect is good, and the structure is simple.

Description

Technical Field

[0001] The utility model relates to the technical field of bearing testing machines, in particular to a testing machine used for reproducing the white peeling phenomenon of a bearing. Background Art

[0002] The white peeling phenomenon of bearings usually refers to white etching cracks. The occurrence of this phenomenon is generally related to stress state and environmental factors. In some specific environments, such as automobile engine gear trains, wind power speed increasers, industrial gear boxes and other environments, white peeling problems of bearings occur frequently. If the technicians in this field do not improve the bearings, bearing systems or application conditions, bearing failures will occur again. For different application environments, the improvement methods of the white peeling problem of bearings are also different; in the engine gear train, the main causes of white peeling are early peeling caused by high-frequency vibration of the vehicle, high temperature, heavy load, rapid speed change of the engine, and friction static electricity between the pulley and the gear train. The solution to this failure is usually to use special performance grease to inhibit white peeling. However, whether the bearings after grease improvement are effective and whether the life can be more resistant to white peeling than the products before improvement requires experimental means for simulation verification. The existing simulation detection device can generally only reproduce the white peeling phenomenon of the pulley bearing by simulating the high temperature / heavy load / rapid speed change of the pulley bearing. However, the pulley bearing will vibrate during operation, and it is also important to simulate the vibration test environment. The existing simulation detection device cannot simulate the vibration test environment. Utility Model Content

[0003] In view of the shortcomings of the prior art, the utility model provides a testing machine for reproducing the white peeling phenomenon of a bearing. The testing machine can simulate the test environment of a pulley bearing speed change and vibration test, has good simulation effect and simple structure.

[0004] To achieve the above-mentioned purpose, the utility model provides a testing machine for reproducing the white peeling phenomenon of bearings, including a test bench, a pulley bearing bracket is provided at the upper end of the test bench, a plurality of bearing seats for placing pulley bearings are provided on the pulley bearing bracket, a pulley bearing is provided on each of the bearing seats, a driving motor for driving the pulley is provided at the lower end, a driving wheel is provided at one end of the driving motor corresponding to the position of the pulley bearing, a belt is connected to the driving wheel and the pulley bearing, the test bench is provided with a plurality of supporting legs, and elastic members are provided between the supporting legs and the test bench.

[0005] The effect that can be produced by adopting the above technical scheme is: a pulley bearing bracket is set on the test bench, and the pulley bearing is installed on the pulley bearing bracket and fixed on the test bench. The pulley bearing bracket is provided with multiple bearing seats, and multiple pulley bearings can be installed. In this scheme, five pulley bearings are set for simultaneous testing, and the five pulley bearings are respectively installed on five bearing seats. A driving motor and a driving wheel are set at the lower end of the test bench, and the driving wheel is connected to the driving motor. The driving wheel is connected to the pulley bearing at the upper end of the test bench through a belt transmission. When the technical personnel in the field start the motor driving wheel to rotate, the belt on the driving wheel can transmit the force to the pulley bearing and drive the pulley bearing to rotate. In this scheme, one belt is connected to five pulley bearings and one driving wheel. When the driving wheel rotates, the five pulley bearings can also rotate. At this time, an elastic member is set between the support foot of the test bench and the test bench. The set elastic member can simulate the vibration test environment, and the vibration frequency generated when the pulley bearing rotates can be reflected through the vibration of the elastic member. The technical personnel in the field only need to set a detection device at the corresponding elastic member position to detect the vibration frequency, and the effect of simulating the vibration environment is good and the structure is simple.

[0006] The utility model is further configured as follows: the elastic member is a spring, one end of the spring is against the test bench, and the other end is against the support foot, a connecting rod is provided on the upper end surface of the support foot extending toward the test bench, a limited position gap is formed between the connecting rod and the support foot, the test bench is provided with a mounting hole corresponding to the position of the connecting rod, the connecting rod passes through the spring and is slidably connected to the mounting hole, and the upper end surface of the support foot can be against the lower end surface of the test bench.

[0007] The effect that can be produced by adopting the above technical scheme is: this scheme adopts the spring as the elastic part, and the two ends of the spring are respectively against the test bench and the support table foot, and the support table foot is connected to the test bench through a connecting rod, and the connecting rod is slidably connected in the mounting hole of the support table. When the pulley bearing rotates and generates vibration, the spring will also vibrate. At this time, the connecting rod will slide in the mounting hole due to the vibration. The setting of a limiting notch can prevent the connecting rod from falling out of the mounting hole when sliding in the mounting hole. The limiting notch can limit the axial sliding amplitude of the connecting rod and improve the sliding stability. In this scheme, a quadrilateral test bench is adopted, and mounting holes and springs are respectively set at the four corners of the quadrilateral test bench. When the pulley bearing is tested, the springs at the four corners can simulate the vibration environment, so that the test data collection is more complete and the test data is more accurate.

[0008] The utility model is further configured as follows: a spring cover is provided on the lower end surface of the test bench corresponding to the spring position, a first limiting groove is provided on the support foot corresponding to the spring position, the spring cover is provided with a second limiting groove with an opening facing the spring, one end of the spring is connected to the first limiting groove, and the side walls of both sides of the spring corresponding to one end of the first limiting groove abut against the inner wall of the first limiting groove, the other end of the spring is connected to the second limiting groove, and the side walls of both sides of the spring corresponding to one end of the second limiting groove abut against the inner wall of the second limiting groove.

[0009] The effect that can be produced by adopting the above technical scheme is: a spring cover is set, and a first limit groove and a second limit groove are set at the corresponding spring position, the first limit groove is set on the support foot, and the second limit groove is set on the spring cover. When installing the spring, one end of the spring is first placed in the second limit groove and the spring is circumferentially abutted against the second limit groove, and then the connecting rod is passed through the middle of the spring so that the other end of the spring is placed in the first limit groove and the spring is circumferentially abutted against the first limit groove. The inner peripheral wall of the limit groove can support the connection position of the spring and the corresponding limit groove, avoid the position deviation of the spring when it is under pressure, increase the service life of the spring, and can more accurately simulate the vibration test environment. It has a simple structure and is easy to operate.

[0010] The utility model is further configured that: a linear bearing is arranged in the mounting hole, and the connecting rod is slidably matched with the linear bearing.

[0011] The effect produced by adopting the above technical solution is: by setting a linear bearing in the mounting hole, the connecting rod and the linear bearing can slide up and down in cooperation, the sliding track is not easy to deviate, the sliding effect is better, and it is easier to simulate the vibration test environment.

[0012] The utility model is further configured that: the test bench is provided with at least one through hole for passing the belt at a position between the corresponding pulley bearing and the driving wheel.

[0013] The effect that can be produced by adopting the above technical solution is: by opening a through hole on the test bench between the pulley bearing and the driving wheel, the belt can pass through the through hole and directly connect with the pulley bearing and the driving wheel, thereby reducing the length of the belt, saving costs and improving transmission efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 A three-dimensional diagram of an embodiment of the utility model;

[0015] Figure 2 This is a partial structural sectional view of an embodiment of the utility model. DETAILED DESCRIPTION

[0016] The utility model is a test machine for reproducing the white peeling phenomenon of bearings as shown in the figure, comprising a test bench 1, a pulley bearing bracket 2 is arranged on the upper end of the test bench 1, a plurality of bearing seats 3 for placing pulley bearings 4 are arranged on the pulley bearing bracket 2, a pulley bearing 4 is arranged on each of the bearing seats 3, a driving motor 5 for driving the pulley is arranged on the lower end, a driving wheel 6 is arranged at one end of the driving motor 5 corresponding to the position of the pulley bearing 4, a belt 7 is connected between the driving wheel 6 and the pulley bearing 4, the test bench 1 is provided with a plurality of supporting legs 8, an elastic member is arranged between the supporting legs 8 and the test bench 1, a pulley bearing 4 bracket 2 is arranged on the test bench 1, the pulley bearing 4 is mounted on the pulley bearing 4 bracket 2 and fixed on the test bench 1, the pulley bearing 4 bracket 2 is provided with a plurality of bearing seats 3, and a plurality of pulley bearings 4 can be installed. In this scheme, five bearing seats are arranged The pulley bearing 4 is tested at the same time, and the five pulley bearings 4 are respectively installed on the five bearing seats 3. A driving motor 5 and a driving wheel 6 are arranged at the lower end of the test bench 1. The driving wheel 6 is connected to the driving motor 5, and the driving wheel 6 is connected to the pulley bearing 4 at the upper end of the test bench 1 through a belt 7. When a technician in the field turns on the motor driving wheel 6 to rotate, the belt 7 on the driving wheel 6 can transmit the force to the pulley bearing 4 and drive the pulley bearing 4 to rotate. This scheme connects five pulley bearings 4 and a driving wheel 6 with one belt 7. When the driving wheel 6 rotates, the five pulley bearings 4 can also rotate. At this time, an elastic member is arranged between the supporting platform foot 8 of the test bench 1 and the test bench 1. The elastic member can simulate the vibration test environment and can reflect the vibration frequency generated when the pulley bearing 4 rotates through the vibration of the elastic member. The technicians in the field only need to arrange a detection device at the corresponding elastic member position to detect the vibration frequency;The elastic member is a spring 9, one end of which is against the test bench 1, and the other end is against the support foot 8. A connecting rod 10 is provided on the upper end surface of the support foot 8 extending toward the test bench 1, and a limited position notch 11 is formed between the connecting rod 10 and the support foot 8. The test bench 1 is provided with a mounting hole 12 at a position corresponding to the connecting rod 10. The connecting rod 10 passes through the spring 9 and is slidably connected to the mounting hole 12. The upper end surface of the support foot 8 can be against the lower end surface of the test bench 1. This scheme adopts the spring 9 as the elastic member, and the two ends of the spring 9 are respectively against the test bench 1 and the support foot 8. The support foot 8 is connected to the test bench 1 through the connecting rod 10, and the connecting rod 10 is slidably connected to the test bench 1. Connected to the mounting hole 12 of the support platform, when the pulley bearing 4 rotates and generates vibration, the spring 9 will also vibrate. At this time, the connecting rod 10 will slide in the mounting hole 12 due to the vibration. The limiting notch 11 is provided to prevent the connecting rod 10 from slipping out of the mounting hole 12 when sliding in the mounting hole 12. The limiting notch 11 can limit the axial sliding amplitude of the connecting rod 10 and improve the sliding stability. In this scheme, a quadrilateral test bench 1 is adopted, and mounting holes 12 and springs 9 are respectively provided at the four corners of the quadrilateral test bench 1. When the pulley bearing 4 is tested, the springs 9 at the four corners can simulate the vibration environment; a spring cover 1 is provided at the position corresponding to the spring 9 on the lower end surface of the test bench 1 3. The support foot 8 is provided with a first limiting groove 15 at a position corresponding to the spring 9, and the spring cover 13 is provided with a second limiting groove 14 with an opening facing the spring 9. One end of the spring 9 is connected to the first limiting groove 15, and the two side walls of the spring 9 corresponding to one end of the first limiting groove 15 abut against the inner wall of the first limiting groove 15. The other end of the spring 9 is connected to the second limiting groove 14, and the two side walls of the spring 9 corresponding to one end of the second limiting groove 14 abut against the inner wall of the second limiting groove 14. The spring cover 13 is provided, and the first limiting groove 15 and the second limiting groove 14 are provided at the position corresponding to the spring 9. The first limiting groove 15 is provided on the support foot 8, and the second limiting groove 14 is provided on the spring cover 1 3, when installing the spring 9, first place one end of the spring 9 in the second limiting groove 14 and make the spring 9 and the second limiting groove 14 circumferentially abut against each other, then pass the connecting rod 10 through the middle of the spring 9 so that the other end of the spring 9 is placed in the first limiting groove 15 and make the spring 9 and the first limiting groove 15 abut against each other circumferentially, the inner circumferential wall of the limiting groove can support the connection position of the spring 9 and the corresponding limiting groove, so as to avoid the position deviation of the spring 9 when it is compressed; a linear bearing 16 is provided in the mounting hole 12, and the connecting rod 10 and the linear bearing 16 are slidably matched, and the linear bearing 16 is provided in the mounting hole 12 so that the connecting rod 10 and the linear bearing 16 can slide up and down in cooperation;The test bench 1 is provided with at least one through hole 17 for passing the belt 7 at a position corresponding to the position between the pulley bearing 4 and the driving wheel 6. The through hole 17 is provided on the test bench 1 between the pulley bearing 4 and the driving wheel 6, and the belt 7 can pass through the through hole 17 to directly connect with the pulley bearing 4 and the driving wheel 6. In this solution, two through holes 17 are provided, and each through hole 17 passes through the belt 7, so that one belt 7 can pass through one through hole 17 to connect with the driving wheel 6, and then pass through the other through hole 17 to connect with the pulley bearing 4. In other solutions, the belt 7 can also be passed through one through hole 17. ;

[0017] The above shows and describes the basic principles and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which shall fall within the scope of the utility model to be protected. The scope of protection of the utility model shall be defined by the attached claims and their equivalents.

Claims

1. A testing machine for reproducing the white peeling phenomenon of a bearing, characterized in that: The invention comprises a test bench, wherein a pulley bearing bracket is arranged at the upper end of the test bench, a plurality of bearing seats for placing pulley bearings are arranged on the pulley bearing bracket, a pulley bearing is arranged on each of the bearing seats, a driving motor for driving the pulley is arranged at the lower end, a driving wheel is arranged at one end of the driving motor corresponding to the position of the pulley bearing, a belt is connected between the driving wheel and the pulley bearing, and the test bench is provided with a plurality of supporting legs, and an elastic member is arranged between the supporting legs and the test bench.

2. A testing machine for reproducing the white peeling phenomenon of a bearing according to claim 1, characterized in that: The elastic member is a spring, one end of which is against the test bench, and the other end is against the support foot. A connecting rod is provided on the upper end surface of the support foot extending toward the test bench, and a limited position gap is formed between the connecting rod and the support foot. The test bench is provided with a mounting hole corresponding to the position of the connecting rod. The connecting rod passes through the spring and is slidably connected to the mounting hole, and the upper end surface of the support foot can be against the lower end surface of the test bench.

3. A testing machine for reproducing the white peeling phenomenon of a bearing according to claim 2, characterized in that: A spring cover is provided at a spring position corresponding to the lower end surface of the test bench, a first limiting groove is provided at a spring position corresponding to the support foot, and the spring cover is provided with a second limiting groove with an opening facing the spring. One end of the spring is connected to the first limiting groove, and the side walls of the spring corresponding to one end of the first limiting groove abut against the inner wall of the first limiting groove. The other end of the spring is connected to the second limiting groove, and the side walls of the spring corresponding to one end of the second limiting groove abut against the inner wall of the second limiting groove.

4. A testing machine for reproducing the white peeling phenomenon of a bearing according to claim 2, characterized in that: A linear bearing is arranged in the mounting hole, and the connecting rod is slidably matched with the linear bearing.

5. A testing machine for reproducing the white peeling phenomenon of a bearing according to claim 1, characterized in that: The test bench is provided with at least one through hole for passing the belt at a position between the corresponding pulley bearing and the driving wheel.

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