CN207866496U - The bearing test device of the radially alternating load of application based on synchronous belt drive mechanism - Google Patents

Abstract

The utility model relates to a bearing test device for applying radial alternating loads based on a synchronous belt transmission mechanism, comprising: a computer, the computer is connected with a driving motor, the output shaft of the driving motor is connected with the rotating shaft through a shaft coupling, and the rotating shaft is arranged outside There is a bearing to be tested, the bearing is a sliding bearing, a radial alternating load loading module is set on the bearing to be tested, including a temperature sensor set on the bearing to be tested and a temperature sensor is set on the outside of the bearing to be tested, in four directions Symmetrical loading part, the loading part includes a rotating motor, a synchronous belt transmission mechanism connected to the rotating motor, a spring connected to the synchronous belt transmission mechanism and a connecting mechanism connected to the other end of the spring, and the synchronous belt transmission mechanism includes a driving wheel, a driven wheel and The sliding block, the driving wheel and the driven wheel are connected by a chain, and the sliding block is clamped on the chain and moves synchronously with the chain. The utility model can realize the alternating load loading of the bearing in four directions and two radial directions.

Description

Bearing test device with radial alternating load based on synchronous belt transmission mechanism

technical field

The utility model relates to a bearing test device, in particular to a bearing test device for applying radial alternating loads based on a synchronous belt transmission mechanism.

Background technique

Internal combustion engines are widely used in automobiles, ships, airplanes, tanks, railway locomotives, agricultural machinery, construction machinery, generator sets and other industries. As power equipment, they occupy a very important position in the national economy. The internal combustion engine includes several important friction pairs such as piston-cylinder liner, piston ring-cylinder liner, crankshaft-bearing and cam-tappet. Among them, the crankshaft bearing, including the main bearing and the connecting rod bearing (due to the working load of this type of bearing The size and direction of the internal combustion engine change with time, so it is usually called a dynamic load bearing), which is one of the most critical friction pairs of the internal combustion engine. It not only affects the reliability and durability of the internal combustion engine, but also affects the potential for further strengthening of the internal combustion engine.

The performance and reliability of the bearing are the most important performance indicators of the bearing, but because there are too many factors affecting the performance of the bearing, it is an effective way to conduct a bearing test. Bearing test is an important verification process that is indispensable in the bearing design and manufacturing process. The load of the test bearing is an important parameter in the test of the bearing testing machine, and its accuracy directly affects the test results of the bearing. At present, the traditional bearing test device has a single loading characteristic and cannot realize variable load loading. In real internal combustion engines, the dynamic load bearing is often under alternating loads, so it is difficult for the traditional bearing test device to carry out the test of the dynamic load bearing of the engine.

Utility model content

The purpose of this utility model is to provide a bearing test device based on a synchronous belt transmission mechanism for applying radial alternating loads in order to overcome the above-mentioned defects in the prior art.

The purpose of this utility model can be achieved through the following technical solutions:

A bearing test device for applying radial alternating loads based on a synchronous belt transmission mechanism, characterized in that the device includes: a computer, a drive motor, a rotating shaft, and an alternating load loading assembly,

The computer is controlled and connected to the drive motor, the output shaft of the drive motor is connected to the rotating shaft through a coupling,

The outer sleeve of the rotating shaft is provided with a sliding bearing to be tested, and the sliding bearing is composed of a bearing seat and a bearing bush embedded in the bearing seat with a smooth inner surface.

The radial alternating load loading module arranged on the tested bearing includes a temperature sensor arranged on the tested bearing and a loading part arranged outside the tested bearing, which is symmetrical in four directions, and the loading part includes a rotating The motor, the synchronous belt transmission mechanism connected to the rotating motor, the spring connected to the synchronous belt transmission mechanism and the connection mechanism connected to the other end of the spring;

The synchronous belt transmission mechanism includes a driving wheel, a driven wheel and a sliding block, the driving wheel and the driven wheel are spur gears, the driving wheel and the driven wheel are connected by a chain, and the sliding block is clamped on the chain and move synchronously with the chain.

A linear guide rail is also provided below the sliding block.

The diameter of the driving wheel is greater than that of the driven wheel.

The diameter of the driving wheel is the same as that of the driven wheel.

The tested bearing is provided with a temperature sensor.

A fixed fixture is also provided on the outside of the movable fixture, and a test bearing is clamped inside the fixed fixture.

The test bearing is sleeved on the rotating shaft and supports the rotating shaft.

A torque meter driven and controlled by a computer is also sleeved on the rotating shaft.

The alternating load loading assembly is connected with an oil supply system driven and controlled by a computer.

The computer controls the driving motor and the alternating load loading assembly.

The computer controls the rotation of the drive motor, which can realize the rotation of the bearing at a given speed. In the radial alternating load loading module, the rotation of the rotating electrical machine is controlled by computer. The rotational motion of the rotary motor is converted into linear motion by a synchronous belt transmission mechanism, which can affect the amount of tension/compression of the spring. Due to the change of the tension/compression of the spring, the spring will be able to exert a force of different magnitudes and variable directions on the surface of the movable fixture. By adding multiple rotating motors-synchronous belt transmission mechanism-spring units in different areas of the movable fixture, the radial alternating load of the bearing can be loaded, so that the load can be applied in two directions at the same time, and the synchronization of the load can be guaranteed by the combination of connecting rods . The computer controls the oil supply during the operation of the bearing through the oil supply device. Torque meters and temperature sensors can be used to monitor the performance of bearings during operation.

Compared with the prior art, the utility model has the following advantages:

1. The rotation angle of the rotating motor is controlled by the computer, and then the compression/stretching of the spring is changed, and the elastic force of the spring is controlled, so that the bearing can be loaded with alternating loads in four directions and two radial directions.

2. Combined with the real working condition of the internal combustion engine, the load of the real working condition of the internal combustion engine can be realized by controlling the rotation angle of the rotating electrical machine and the variation of time through the computer. Using this test device is helpful to carry out the engine dynamic load bearing test.

3. By setting driving wheels and driven wheels with different diameters, the effect of speed ratio transmission is better and more flexible adjustment is realized.

Description of drawings

Fig. 1 is the structural representation of the utility model;

Fig. 2 is the structural representation of the radial alternating load loading module of the present utility model;

Fig. 3 is a structural schematic diagram of a synchronous belt transmission mechanism.

In the figure: 1 is the computer, 2 is the driving motor, 3 is the coupling, 4 is the torque meter, 5 is the fixed fixture A, 6 is the oil supply device, 7 is the radial alternating load loading module, 8 is the movable fixture, 9 is the fixed fixture B, 10 is the rotating shaft, 11 is the test bearing B, 12 is the tested bearing B, 13 is the tested bearing A, 14 is the test bearing A, 15 is the working platform, 16 is the temperature sensor, 17 18 is the synchronous belt transmission mechanism A, 19 is the spring A, 20 is the connecting device A, 21 is the rotary motor B, 22 is the synchronous belt transmission mechanism B, 23 is the spring B, 24 is the connecting device B, 25 26 is a spring C, 27 is a synchronous belt transmission mechanism C, 28 is a rotary motor C, 29 is a connection device D, 30 is a spring D, 31 is a synchronous belt transmission mechanism D, 32 is a rotary motor D, 33 Be driving wheel, 34 is driven wheel, and 35 is chain, and 36 is slide block, and 37 is linear guide rail.

Detailed ways

The utility model is described in detail below in conjunction with specific embodiments. The following examples will help those skilled in the art to further understand the utility model, but do not limit the utility model in any form. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the present utility model. These all belong to the protection domain of the present utility model.

Example 1

A kind of bearing test device that applies radial alternating load based on a synchronous belt transmission mechanism, as shown in Figure 1, the device includes a computer 1, a drive motor 2, a shaft coupling 3, a torque meter 4, and a fixed fixture A 5, for Oil system 6, radial alternating load loading module 7, movable fixture 8, fixed fixture B 9, rotating shaft 10, accompanying test bearing B11, tested bearing B 12, tested bearing A 13, accompanying test bearing A 14, working Platform 15. Wherein, as shown in Figure 2, the radial alternating load loading module 7 includes a temperature sensor 16, a rotary motor A 17, a synchronous belt transmission mechanism A 18, a spring A 19, a connecting device A 20, a rotary motor B 21, a synchronous belt transmission Mechanism B 22, spring B 23, connection device B 24, connection device C 25, spring C 26, timing belt transmission mechanism C 27, rotating motor C 28, connection device D 29, spring D 30, timing belt transmission mechanism D 31, Rotate motor D 32 .

Wherein, the driving motor 2 , the torque meter 4 , the fixing fixture A 5 and the fixing fixture B 9 are installed on the workbench 15 . The rotating motor 2 is connected with the rotating shaft 10 through a coupling 3 to make the rotating shaft 10 rotate. The accompanying test bearing A 14 is installed inside the fixing fixture A5, and the accompanying test bearing B 11 is installed inside the fixing fixture B 9. However, the tested bearing A 13 and the tested bearing B 14 are installed inside the movable jig 8 . The test bearing A 14 and the test bearing B 11 play a role in supporting the rotating shaft 10 .

In the radial alternating load loading module 7, four components are installed, which can be loaded symmetrically in four directions. The rotary motor A 17 converts the rotary motion into a linear motion through the synchronous belt transmission mechanism A 18, and the control spring A 19 undergoes tension/compression deformation, and the spring A 19 is connected with the movable fixture 8 through the connection device A 20 to apply bearing loading force. Similarly, the rotary motor B 21 converts the rotary motion into a linear motion through the synchronous belt transmission mechanism B 22, and the control spring B 23 undergoes tension/compression deformation, and the spring B 23 is connected with the movable fixture 8 through the connecting device B 24, and the bearing load is applied Force; the rotary motor C28 converts the rotary motion into a linear motion through the synchronous belt transmission mechanism C27, and the control spring C26 is stretched/compressed and deformed, and the spring C26 is connected with the movable clamp 8 through the connecting device C25, and the bearing loading force is applied; The rotary motor D32 converts the rotary motion into a linear motion through the synchronous belt transmission mechanism D31, and the control spring D30 undergoes tension/compression deformation, and the spring D30 is connected with the movable fixture 8 through the connecting device D29 to apply bearing loading force.

The structures of the four synchronous belt transmission mechanisms used are roughly the same, as shown in Figure 3, comprising driving wheel 33, driven wheel 34 and sliding block 36, the driving wheel 33 and driven wheel 34 used are spur gears, driving wheel 33 and The output shaft of the rotary motor is connected, and the driving wheel 33 and the driven wheel 34 are both sleeved on the chain 35 to form a closed loop, and the driving wheel 33 is used to drive the driven wheel 34 to rotate, thereby making the chain 35 realize linear motion. The sliding block 36 is sleeved on the chain 35, and then can move linearly along with the belt. In addition, a linear guide rail 29 may also be provided under the sliding block 36 to further control its linear motion. The sliding block 36 is used to connect with the spring, so that the stretching/compression deformation of the spring can be controlled. An important feature of this embodiment is that the diameter of the driving wheel 33 used is larger than that of the driven wheel 34, so that the effect of speed ratio transmission is better and more flexible adjustment is realized.

The computer 1 is connected to the drive motor 2 , the oil supply device 6 , the rotary motor A 17 , the rotary motor B 21 , the rotary motor C 28 , and the rotary motor D 32 . The computer 1 controls the rotation of the driving motor 2 to realize the rotation of the bearing at a given speed. At the same time, the computer 1 controls the oil supply device 6 to supply oil to the bearing. The operations of the rotary motor A 17 , the rotary motor B 21 , the rotary motor C 28 and the rotary motor D 32 are also controlled by the computer. In addition, the torque meter 4 and the temperature sensor 16 are also connected to the computer 1, which can collect signals during the operation of the bearing and monitor the operation status of the bearing.

Example 2

A bearing test device based on a synchronous belt drive mechanism that applies radial alternating loads, its structure is roughly the same as that of Embodiment 1, the difference is that the diameter of the driving wheel in this embodiment is the same as that of the driven wheel.

The specific embodiments of the present utility model have been described above. It should be understood that the utility model is not limited to the above-mentioned specific embodiments, and those skilled in the art can make various changes or modifications within the scope of the claims, which does not affect the essence of the utility model.

Claims (10)

1. the bearing test device of the radially alternating load of application based on synchronous belt drive mechanism, which is characterized in that the device packet It includes：Including computer, driving motor, rotary shaft, alternating load charging assembly,

The computer is connected with the driving motor control, and the output shaft of the driving motor passes through shaft coupling and institute The rotation axis connection stated,

The described rotation outer shaft sleeve is equipped with detected sliding bearing, the sliding bearing by bearing block, be embedded and be in bearing block The bearing shell in smooth inside face forms,

Radially alternating load load-on module on being detected bearing is set, including the temperature sensing being arranged on being detected bearing Device and setting are being detected on the outside of bearing, and the symmetrical loading component on four direction, the loading component includes rotation Motor, the synchronous belt drive mechanism being connect with electric rotating machine, the spring being connect with synchronous belt drive mechanism and to be connected to spring another The bindiny mechanism of one end；

The synchronous belt drive mechanism includes driving wheel, driven wheel and sliding shoe, and the driving wheel and driven wheel are straight Gear is connected between driving wheel and driven wheel by chain, and the sliding shoe is connected on chain and is moved with chain syn-chro-step.

2. the bearing test device of the application radially alternating load according to claim 1 based on synchronous belt drive mechanism, It is characterized in that, being additionally provided with the linear guide below the sliding shoe.

3. the bearing test dress of the application radially alternating load according to claim 1 or 2 based on synchronous belt drive mechanism It sets, which is characterized in that the diameter of the driving wheel is more than the diameter of driven wheel.

4. the bearing test dress of the application radially alternating load according to claim 1 or 2 based on synchronous belt drive mechanism It sets, which is characterized in that the diameter of the driving wheel is identical as the diameter of driven wheel.

5. the bearing test device of the application radially alternating load according to claim 1 based on synchronous belt drive mechanism, It is characterized in that, the detected bearing is equipped with temperature sensor.

6. the bearing test device of the application radially alternating load according to claim 1 based on synchronous belt drive mechanism, It is characterized in that, being additionally provided with stationary fixture on the outside of the floating holder, it is folded in the stationary fixture and accompanies examination bearing.

7. the bearing test device of the application radially alternating load according to claim 6 based on synchronous belt drive mechanism, It is characterized in that, described accompanies examination bearing to be set in rotary shaft and support rotary shaft.

8. the bearing test device of the application radially alternating load according to claim 1 based on synchronous belt drive mechanism, It is characterized in that, being also arranged with the torquemeter through computer drive control in the rotary shaft.

9. the bearing test device of the application radially alternating load according to claim 1 based on synchronous belt drive mechanism, It is characterized in that, the alternating load charging assembly is connected with the oil supply system through computer drive control.

10. the bearing test device of the application radially alternating load according to claim 1 based on synchronous belt drive mechanism, It is characterized in that, the computer control driving motor and alternating load charging assembly.