CN205374035U - High -speed loading running -in test machine of transaxle - Google Patents

Abstract

A drive axle high-speed loading running-in testing machine, comprising a driving motor fixed on a fixed base plate, two loading motors, a first transmission and a second transmission; the first transmission includes a hub loading ring, a first transmission shaft, bearing unit; the output shaft of the loading motor, the bearing unit, the first transmission shaft, and the hub loading ring are fixedly connected in sequence, and the hub loading ring can be fixedly connected with the hub at the end of the drive axle; the driving motor The output shaft is fixedly connected with the second transmission device, and the second transmission device can be connected with the reducer of the driving axle. The driving axle high-speed loading running-in testing machine of the utility model can realize the running-in test of the driving axle under high-speed loading, test the working conditions of the driving axle under different rotating speeds, torques, and steering situations, and ensure its working stability and service life.

Description

A driving axle high-speed loading running-in test machine

technical field

The utility model relates to a performance detection device of an automobile part, in particular to a performance detection device of a driving axle.

Background technique

The drive axle of a car refers to the device located at the end of the drive train to change the speed and torque from the transmission and transmit them to the drive wheels. The drive axle is generally composed of the final drive, differential, wheel drive and drive axle housing.

In the prior art, the device for testing the drive axle is usually a fatigue testing machine. By inputting high torque and low speed to the drive axle, such as a torque of 40000N·m and a speed of 170r/min, the test drive axle is tested under a relatively high load. Work stability and parts life. However, the device cannot detect whether the various performances of the drive axle meet the requirements when running at high speed.

Utility model content

In order to solve the above technical problems, the utility model provides a running-in testing machine capable of testing the working conditions of the drive axle under high-speed loading.

The technical scheme adopted in the utility model is:

A high-speed loading and running-in testing machine for drive axles, comprising a driving motor, two loading motors, a first transmission device and a second transmission device fixed on a fixed base plate; the first transmission device includes a hub loading ring, a first transmission shaft, bearing unit; the output shaft of the loading motor, the bearing unit, the first transmission shaft, and the hub loading ring are fixedly connected in sequence, and the hub loading ring can be fixedly connected with the hub at the end of the drive axle; the driving motor The output shaft is fixedly connected with the second transmission device, and the second transmission device can be connected with the reducer of the driving axle.

The driving axle high-speed loading running-in testing machine of the utility model can realize the running-in test of the driving axle under high-speed loading, test the working conditions of the driving axle under different rotating speeds, torques, and steering situations, and ensure its working stability and service life.

Further, the second transmission device includes a second transmission shaft and an end gear flange, the output shaft of the drive motor, the second transmission shaft, and the end gear flange are fixedly connected in sequence, and the end gear method The flange can be fixedly connected with the reducer flange of the driving axle.

Further, the bearing unit includes a bearing mandrel, a bearing, a bearing seat and a bearing cover; the bearing mandrel is fixed on the bearing seat through the bearing sleeved on it, and the bearing cover is respectively It is fixed on the two end surfaces of the bearing seat, and resists the bearing from the side.

Further, a torque sensor is also included, and the two ends of the torque sensor are respectively connected with the output shaft of the loading motor and the bearing mandrel.

Further, it also includes two sets of pressing and positioning devices; the two sets of pressing and positioning devices are located between the two loading motors and arranged symmetrically, which include a pressing rod, a pressing cylinder, a lower pressing plate and a pressing and fixing seat The pressing cylinder is fixedly connected with the pressing rod, one end of the pressing rod is located directly above the lower pressing plate, and the lower pressing plate is fixed on the pressing fixing seat.

Further, the compression rod is a C-shaped compression lever, the middle of which is fixedly connected to the compression cylinder, one end is a free end and is located directly above the lower pressure plate, and the other end is fixed to the compression cylinder. The seats are rotatably connected by pins.

Further, the pressing and positioning device also includes two wear-resistant rotating pressing plates; the wearing-resistant rotating pressing plate is a semicircular sheet, and its side is closely attached to and flexibly connected to the side of the free end of the pressing rod, so that the The wear-resistant rotating platen can rotate on the vertical plane.

Further, it also includes two sets of elastic positioning devices, the elastic positioning devices are respectively arranged between the loading motor and the pressing positioning device; the elastic positioning device includes a V-shaped block, a spring, a spring mandrel, a guide rod and a fixed frame; the fixed frame is affixed to the pressing and fixed seat; the V-shaped block is located directly above the fixed frame; the lower part of the guide rod is fixed on the fixed frame, and its upper part passes through The V-shaped block passes through the V-shaped block, so that the V-shaped block can move up and down relative to the guide rod; the upper part of the spring mandrel is fixedly connected with the V-shaped block, and the lower part passes through the fixed frame, and can Move up and down relative to the fixed frame; the spring is sleeved on the spring mandrel, one end of which is against the bottom surface of the V-shaped block, and the other end is against the top surface of the fixed frame.

Further, the elastic positioning device further includes a limit baffle, and the limit baffle is fixed on a side of the V-shaped block away from the compression positioning device.

Further, a vibration tester and a noise meter fixed on the fixed base are also included, and the vibration tester and the noise meter can be fixedly connected to the driving axle.

For better understanding and implementation, the utility model will be described in detail below in conjunction with the accompanying drawings.

Description of drawings

Fig. 1 is the axonometric view of drive axle high-speed loading running-in testing machine of the present utility model;

Fig. 2 is the front view of the driving axle high-speed loading running-in testing machine of the present utility model;

Fig. 3 is a partial enlarged view of the front view of the drive axle high-speed loading and running-in testing machine of the present invention;

Fig. 4 is the plan view of drive axle high-speed loading running-in testing machine of the present utility model;

Fig. 5 is a left view of the drive axle high-speed loading running-in testing machine of the present invention.

detailed description

Please refer to Figures 1-5, which are respectively the axonometric view, front view, partial enlarged view of the front view, top view and left view of the drive axle high-speed loading and running-in testing machine of the present invention. The drive axle high-speed loading running-in testing machine of the present utility model comprises a fixed base plate 1, and a driving motor 21 fixed on the fixed base plate 1, two loading motors 22, a first transmission device 3, a second transmission device 4, and a torque sensor 5. Compression positioning device 6, elastic positioning device 7, vibration tester and noise meter (not shown in the figure). The driving axle high-speed loading running-in test machine is used for high-speed loading and running-in test on the driving axle 8, and the driving axle 8 is fixed on the center of the fixed base plate 1 by two sets of pressing positioning devices 6 and two sets of elastic positioning devices 7 arranged symmetrically. , the drive motor 21 is affixed to the reducer flange of the drive axle 8 through the second transmission device 4, the loading motor 22, the torque sensor 5, and the first transmission device 3 are connected in sequence, and the first transmission device 3 is connected to the drive axle 8 The hub at the end is fixed. The vibration tester and the noise meter (not shown in the figure) are respectively connected with the drive axle.

The first transmission device 3 includes a first transmission shaft 31 , a bearing unit 32 and a hub loading ring 33 , and the bearing unit 32 includes a bearing mandrel 321 , a bearing 322 , a bearing seat 323 and a bearing cover 324 . The hub loading ring 33 is fixedly connected to the hub at the end of the transaxle 8, and the hub loading ring, the first drive shaft 31, the bearing mandrel 321, the torque sensor 5, and the output shaft of the loading motor 22 are connected in sequence to realize the loading of the loading motor 22. Power transmission between the drive axle and hub. The bearing 322 is specifically a deep groove ball bearing, which is sleeved on both ends of the bearing mandrel 321 , and fixes the bearing 322 on the bearing seat 323 . The bearing cover 324 is respectively fixed on the two end surfaces of the bearing seat 323 and resists the bearing 322 from the side. The bearing seat 323 is fixed on the fixed bottom plate 1 . The torque sensor 5 is fixed on a fixed base plate through a sensor base 51 . The output shaft of the loading motor 22 is also sleeved with a motor connecting sleeve 221 , and the other end of the motor connecting sleeve 221 is sleeved on one end of the torque sensor 5 to realize the power transmission between the loading motor 22 and the torque sensor 5 .

The pressing and positioning device 6 is used to fix both ends of the drive axle 8 , and it includes a pressing rod, a pressing cylinder 62 , a lower pressing plate 63 and a pressing and fixing seat 64 . Further, the pressing rod is a C-shaped pressing lever 61 . The pressing and fixing seat 64 is fixed on the fixed base plate 1 . Both the lower pressing plate 63 and the pressing cylinder 62 are fixed on the pressing and fixing seat 64 , and the pressing and fixing seat 64 is fixed on the fixed bottom plate 1 . One end of the driving axle 8 is placed on the lower pressing plate 63 . The middle part of the C-shaped compression lever 61 is affixed to the compression cylinder 62, and one end is a free end, which is located above the drive axle 8, and the other end is rotatably connected to the compression fixed seat 64 through a pin. . When the compression cylinder 62 is started, the C-shaped compression lever 61 is pulled downwards, so that its free end is against the drive axle 8 and pressed against the lower pressing plate 63 . Further, the pressing and positioning device 6 also includes two wear-resistant rotating pressing plates 65, the wearing-resistant rotating pressing plates 65 are semicircular thin sheets, and its side is closely attached to and flexibly connected to the side of the free end of the C-shaped pressing lever 61, so that This wear-resistant rotating pressing plate 65 can rotate on the vertical plane, and when the free end of C-shaped pressing lever 61 moves downward, the plane place of this wearing-resistant rotating pressing plate 65 can be pressed on the drive axle 8 tightly, and according to driving The shape of the axle 8 is adaptively rotated to better fit the driving axle 8 and improve the fixing effect.

The elastic positioning device 7 is located between the loading motor 22 and the pressing positioning device 6 , and is used for supporting the flanges at both ends of the driving axle 8 . The elastic positioning device 7 includes a V-shaped block 71 , a spring 72 , a spring mandrel 73 , a guide rod 74 , a fixing frame 75 and a limit baffle 76 . The fixing frame 75 is fixedly connected with the pressing and fixing seat 64 . This V-shaped block 71 is used to support the flanges at the two ends of the drive axle 8, and it is located directly above the fixed mount 75. The guide rod 74 passes through the V-shaped block 71 and the fixed mount 75 vertically, and its lower part is fixed with the fixed mount 75. Then, its upper part passes through the V-shaped block 71, so that the V-shaped block 71 can move up and down relative to the guide rod 74. The spring mandrel 73 vertically passes through the V-shaped block 71 and the fixed frame 75, its upper part is affixed to the V-shaped block 71, and its lower part passes through the fixed frame 75 and can move up and down relative to it. The spring 72 is sheathed on the spring mandrel 73 , one end of which is against the bottom surface of the V-shaped block 71 , and the other end is against the top surface of the fixing frame 75 . The limit baffle 76 is affixed to the side of the V-shaped block 71 away from the pressing and positioning device 6 , and the two groups of limit baffles 76 work together to resist the flange to fix the drive axle 8 in its length direction. When the flanges at both ends of the drive axle 8 are placed on the V-shaped block 71, the V-shaped block 71 compresses the spring 72 to the equilibrium position, and the spring 72 generates a reverse force to make the drive axle 8 move upwards, and cooperate with the compression In the positioning device 6, the compression lever 61 that compresses the driving axle 8 downwards makes the driving axle 8 fixed by two pressing forces up and down in the vertical direction. Simultaneously, the shape of V-shaped block 71 can limit the movement of driving axle 8 in its width direction, and the restriction of upper limit baffle plate 76 on its length direction to driving axle 8 makes the position of driving axle 8 in the horizontal direction also be fixed.

The second transmission device 4 includes a second transmission shaft 31 and a face gear flange 32 . The output shaft of the drive motor 21 , the second drive shaft 31 , the end tooth flange 32 , and the reducer flange of the drive axle 8 are fixedly connected in sequence to realize the power transmission between the drive motor 21 and the drive axle reducer.

When the driving axle high-speed loading running-in testing machine of the present utility model is in use, the driving axle 8 is placed on the testing machine, the driving motor 21 and the loading motor 22 are started, and the driving motor 21 outputs a high speed to the driving axle, and the loading motor 22 sends it to the driving axle. Output a lower reverse loading moment to simulate the use of the drive axle at high speed and low load. Specifically, the output speed of the driving motor is 1500 r/min or above, and the output torque of the loading motor is 500 N·m or below. At the same time, the actual output torque of the loading motor 22 can be recorded by the torque sensor 5 . The test is completed by adjusting the output speed of the driving motor, the output torque of the loading motor, and the steering and recording the test parameter curve. Furthermore, through the connection with external equipment, such as vibration tester and noise meter, the vibration and noise of the driving axle at high speed can be tested, and the cleaning effect of the oil and the meshing of the gears can also be tested.

The driving axle high-speed loading running-in test machine of the utility model can realize the running-in test of the driving axle under high-speed loading, test the vibration and noise of the driving axle under different speeds, torques, and steering conditions, and ensure its working stability and service life.

The utility model is not limited to the above-mentioned embodiment, if the various modifications or deformations of the utility model do not depart from the spirit and scope of the utility model, if these changes and deformations belong to the claims of the utility model and within the equivalent technical scope, Then the utility model is also intended to include these modifications and variations.

Claims (10)

1. A driving axle high-speed loading running-in testing machine is characterized in that: comprise a driving motor, two loading motors, the first transmission and the second transmission fixed on the fixed base plate; the first transmission comprises The hub loading ring, the first transmission shaft, and the bearing unit; the output shaft of the loading motor, the bearing unit, the first transmission shaft, and the hub loading ring are fixedly connected in sequence, and the hub loading ring can be fixedly connected to the hub at the end of the drive axle ; The output shaft of the driving motor is fixedly connected with the second transmission device, and the second transmission device can be connected with the reducer of the driving axle. 2. The drive axle high-speed loading running-in testing machine according to claim 1, characterized in that: the second transmission device includes a second transmission shaft and an end tooth flange, the output shaft of the drive motor, the second The drive shaft and the end face tooth flange are fixedly connected in sequence, and the end face tooth flange can be fixedly connected with the reducer flange of the driving axle. 3. The drive axle high-speed loading running-in testing machine according to claim 2, characterized in that: the bearing unit comprises a bearing mandrel, a bearing, a bearing seat and a bearing gland; the bearing mandrel is sleeved on it The bearing is fixed on the bearing seat, and the bearing cover is respectively fixed on both ends of the bearing seat, and supports the bearing from the side. 4. The drive axle high-speed loading and running-in testing machine according to claim 3, further comprising a torque sensor, the two ends of the torque sensor are respectively connected to the output shaft of the loading motor and the bearing mandrel. 5. The drive axle high-speed loading and running-in testing machine according to any one of claims 1 to 4, characterized in that: it also includes two sets of pressing and positioning devices; the two sets of pressing and positioning devices are located between the two loading The motors are arranged symmetrically, including a compression rod, a compression cylinder, a lower pressure plate and a compression fixing seat; the compression cylinder is fixedly connected to the compression rod, and one end of the compression rod is located on the lower Directly above the pressing plate, the lower pressing plate is fixed on the pressing and fixing seat. 6. The drive axle high-speed loading and running-in testing machine according to claim 5, characterized in that: the compression rod is a C-shaped compression lever, the middle part of which is fixedly connected to the compression cylinder, and one end is a free end and It is located directly above the lower pressing plate, and its other end is rotatably connected with the pressing and fixing seat through a pin. 7. The drive axle high-speed loading and running-in testing machine according to claim 6, characterized in that: the pressing and positioning device also includes two wear-resistant rotating pressing plates; the wearing-resistant rotating pressing plate is a semicircular sheet, and its side faces The side surface of the free end of the pressing rod is closely attached to and flexibly connected, so that the wear-resistant rotating pressing plate can rotate on a vertical plane. 8. The drive axle high-speed loading and running-in testing machine according to claim 7, characterized in that: it also includes two sets of elastic positioning devices, and the elastic positioning devices are respectively arranged between the loading motor and the pressing positioning device The elastic positioning device includes a V-shaped block, a spring, a spring mandrel, a guide rod and a fixed frame; the fixed frame is affixed to the pressing and fixed seat; the V-shaped block is located directly above the fixed frame The lower part of the guide rod is fixed on the fixed frame, and its upper part passes through the V-shaped block, so that the V-shaped block can move up and down relative to the guide rod; the upper part of the spring mandrel is connected with the The V-shaped block is fixedly connected, its lower part passes through the fixed frame, and can move up and down relative to the fixed frame; the spring is sleeved on the spring mandrel, and one end of it is against the bottom surface of the V-shaped block , and the other end is against the top surface of the fixing frame. 9. The drive axle high-speed loading and running-in testing machine according to claim 8, characterized in that: the elastic positioning device also includes a limit baffle, and the limit baffle is fixed on the V-shaped block away from the Compress one side of the retainer. 10. The driving axle high-speed loading running-in testing machine according to claim 9, characterized in that: it also includes a vibration tester and a noise meter fixed on the fixed base plate, and the vibration tester and the noise meter are fixed and can be connected with the drive axle .