Electric automobile rear drive assembly test device

Abstract

The utility model provides a testing device for a rear drive assembly of an electric automobile. The electric vehicle rear drive assembly test device comprises a supporting table, a gearbox drive assembly is fixedly installed on the top of the supporting table, a drive shaft is fixedly installed on the side face of the gearbox drive assembly, a supporting plate is fixedly connected to the top of the supporting table, and a flywheel is fixedly connected to one end of the drive shaft in a sleeving mode. According to the electric automobile rear drive assembly test device provided by the utility model, through the arrangement of the electromagnetic cover, when an automobile power test is finished, the control host is started, so that the control host can control the electromagnetic cover to be started, and at the moment, relatively large magnetism is generated in the electromagnetic cover, so that the electromagnetic cover can adsorb a rotating flywheel, and the flywheel is driven to rotate. Therefore, the braking effect of the flywheel is achieved, the non-contact stopping effect of the flywheel is further achieved, the problem that the flywheel is seriously abraded during friction braking is avoided, and the protection effect of the testing device is improved.

Description

Technical Field

[0001] The utility model relates to the field of testing devices, in particular to a testing device for a rear drive assembly of an electric vehicle. Background Art

[0002] At present, electric vehicles use a two-speed transmission and a motor to form a rear drive assembly. For this reason, a test bench for the rear drive assembly of an electric vehicle is needed. At the same time, when measuring the rear drive assembly of an electric vehicle, it is also necessary to detect changes in various parameters of the rear drive assembly of the electric vehicle.

[0003] In the existing technology, such as the "An Electric Vehicle Rear Drive Assembly Test Bench" with Chinese Authorization Announcement No.: CN207717371 U, which includes a test bench, a transmission rear drive assembly, a transmission shaft, a torque sensor, a battery pack, a motor control unit, a drive assembly control unit and a real-time monitoring system, compared with the existing technology, (1) the test bench can monitor a variety of parameters and data in real time, and feedback and display them in the monitoring system; (2) by detecting the rear drive transmission assembly, the test bench can truly show the problems of the transmission and accurately evaluate the quality problems of the transmission. (3) An elastic suspension block is provided on the transmission lifting bracket to realize the soft connection between the transmission drive assembly and the bracket, and a buffer pad is also provided between the motor support frame and the chassis seat to realize the soft connection to reduce the interference of vibration on the detection data. In summary, the test bench of this scheme will not cause any impact damage, has low production cost, high buffer strength, and accurate measurement data.

[0004] When testing the drive assembly in the prior art, since the power component has a large kinetic energy when rotating at high speed, friction braking needs to be performed with the help of friction components when braking the power component, which leads to severe wear of the power component during long-term testing.

[0005] Therefore, it is necessary to provide an electric vehicle rear drive assembly test device to solve the above technical problems. Utility Model Content

[0006] The utility model provides an electric vehicle rear drive assembly test device, which solves the problem that the power component has large kinetic energy when rotating at high speed, so that when the power component is braked, friction braking needs to be performed with the help of friction components, resulting in serious wear of the power component during long-term testing.

[0007] In order to solve the above technical problems, the utility model provides a test device for a rear drive assembly of an electric vehicle, comprising a support platform, a gearbox drive assembly is fixedly installed on the top of the support platform, a drive shaft is fixedly installed on the side of the gearbox drive assembly, a support plate is fixedly connected to the top of the support platform, a flywheel is fixedly sleeved on one end of the drive shaft, a control host is fixedly installed on the top of the support platform, an electromagnetic cover is fixedly installed on the top of the support platform, a detection port is opened on the side of the flywheel, an infrared sensor is fixedly installed on the side of the support plate, a threaded column is threadedly sleeved on the front of the support platform, an extrusion plate is movably sleeved on one end of the threaded column, a toothed plate is fixedly connected to the outside of the extrusion plate, a heat dissipation mechanism is arranged on the top of the support platform, a protective mechanism is arranged on the top of the support platform, a hydraulic column is installed on the bottom of the support platform, and a moving mechanism is arranged on the bottom of the support platform.

[0008] Preferably, the electromagnetic cover is movably sleeved on the bottom of the flywheel, and the input end of the electromagnetic cover is electrically connected to the output end of the control host.

[0009] Preferably, the output end of the infrared sensor is signal-connected to the input end of the control host, and the number of the infrared sensors is two.

[0010] Preferably, the threaded column and the extruded plate are perpendicular to each other, and the threaded column is located in the middle of the extruded plate.

[0011] Preferably, the tooth plate is in close contact with the front face of the gearbox drive assembly, and the tooth plate is movably sleeved on the top of the support platform.

[0012] Preferably, the heat dissipation mechanism comprises a ventilation hood, which is fixedly connected to the top of the support platform, a rotating motor is fixedly installed inside the ventilation hood, and a fan blade is fixedly sleeved on the output shaft of the rotating motor.

[0013] Preferably, the protection mechanism comprises a limiting groove, the limiting groove is arranged on the top of the support platform, and a protective cover is movably sleeved inside the limiting groove.

[0014] Preferably, the hydraulic columns and the support platform are perpendicular to each other, and there are two hydraulic columns.

[0015] Preferably, the moving mechanism comprises a support column, the support column is fixedly connected to the bottom of the support platform, and a sliding wheel is installed at the bottom of the support column.

[0016] Compared with the related art, the electric vehicle rear drive assembly test device provided by the utility model has the following beneficial effects:

[0017] The utility model provides an electric vehicle rear drive assembly test device. By setting an electromagnetic cover, when the vehicle power test is finished, the control host is started, so that the control host can control the electromagnetic cover to start. At this time, a large magnetism is generated inside the electromagnetic cover, so that the electromagnetic cover can adsorb the rotating flywheel, that is, the braking effect of the flywheel is achieved, and then the flywheel is stopped without contact, so that the problem of serious wear of the flywheel during friction braking is avoided, thereby improving the protection effect of the test device;

[0018] By setting up an infrared sensor, when conducting a vehicle drive test, the gearbox drive assembly and the control host are started, so that the gearbox drive assembly can drive the flywheel to rotate rapidly. At this time, the control host can detect the rotation speed of the detection port through the infrared sensor, thereby achieving the flywheel rotation speed detection effect, that is, achieving the vehicle drive power detection effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A structural schematic diagram of a preferred embodiment of a rear drive assembly test device for an electric vehicle provided by the utility model;

[0020] Figure 2 for Figure 1 A front view of a test device for a rear drive assembly of an electric vehicle is shown;

[0021] Figure 3 for Figure 1 A front view of an extrusion plate in a test device for a rear drive assembly of an electric vehicle is shown;

[0022] Figure 4 for Figure 1 A front view of a heat dissipation mechanism in a test device for a rear drive assembly of an electric vehicle is shown.

[0023] Numbers in the figure: 1. Support platform; 2. Transmission drive assembly; 3. Drive shaft; 4. Support plate; 5. Flywheel; 6. Control host; 7. Electromagnetic cover; 8. Detection port; 9. Infrared sensor; 10. Threaded column; 11. Extrusion plate; 12. Tooth plate; 13. Heat dissipation mechanism; 131. Ventilation hood; 132. Rotating motor; 133. Fan blade; 14. Protection mechanism; 141. Limiting groove; 142. Protection cover; 15. Hydraulic column; 16. Moving mechanism; 161. Support column; 162. Sliding wheel. DETAILED DESCRIPTION

[0024] The utility model is further described below in conjunction with the accompanying drawings and implementation modes.

[0025] Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 ,in, Figure 1 A structural schematic diagram of a preferred embodiment of a rear drive assembly test device for an electric vehicle provided by the utility model; Figure 2 for Figure 1 A front view of a test device for a rear drive assembly of an electric vehicle is shown; Figure 3 for Figure 1 A front view of an extrusion plate in a test device for a rear drive assembly of an electric vehicle is shown; Figure 4 for Figure 1 A front view of a heat dissipation mechanism in a test device for a rear drive assembly of an electric vehicle is shown. A test device for a rear drive assembly of an electric vehicle comprises a support platform 1, a gearbox drive assembly 2 is fixedly mounted on the top of the support platform 1, a drive shaft 3 is fixedly mounted on the side of the gearbox drive assembly 2, a support plate 4 is fixedly connected to the top of the support platform 1, a flywheel 5 is fixedly sleeved on one end of the drive shaft 3, a control host 6 is fixedly mounted on the top of the support platform 1, an electromagnetic cover 7 is fixedly mounted on the top of the support platform 1, a detection port 8 is opened on the side of the flywheel 5, an infrared sensor 9 is fixedly mounted on the side of the support plate 4, a threaded column 10 is threadedly sleeved on the front of the support platform 1, an extrusion plate 11 is movably sleeved on one end of the threaded column 10, a toothed plate 12 is fixedly connected to the outside of the extrusion plate 11, a heat dissipation mechanism 13 is arranged on the top of the support platform 1, a protective mechanism 14 is arranged on the top of the support platform 1, a hydraulic column 15 is installed on the bottom of the support platform 1, and a moving mechanism 16 is arranged on the bottom of the support platform 1.

[0026] The electromagnetic cover 7 is movably sleeved on the bottom of the flywheel 5, and the input end of the electromagnetic cover 7 is electrically connected to the output end of the control host 6; by setting the electromagnetic cover 7, when the automobile power test is completed, the control host 6 is started, so that the control host 6 can control the electromagnetic cover 7 to start, and at this time, a large magnetism is generated inside the electromagnetic cover 7, so that the electromagnetic cover 7 can adsorb the rotating flywheel 5, that is, the braking effect of the flywheel 5 is achieved, and then the contactless stopping effect of the flywheel 5 is achieved, so that the problem of serious wear of the flywheel 5 during friction braking is avoided, thereby improving the protection effect of the test device.

[0027] The output end of the infrared sensor 9 is signal-connected to the input end of the control host 6, and the number of the infrared sensors 9 is two. By setting the infrared sensor 9, when the automobile drive detection test is performed, the gearbox drive assembly 2 and the control host 6 are started, so that the gearbox drive assembly 2 can drive the flywheel 5 to rotate rapidly. At this time, the control host 6 can detect the rotation speed of the detection port 8 through the infrared sensor 9, thereby achieving the rotation speed detection effect of the flywheel 5, that is, achieving the automobile driving power detection effect.

[0028] The threaded column 10 and the extrusion plate 11 are perpendicular to each other, and the threaded column 10 is located in the middle of the extrusion plate 11; by setting the threaded column 10, when the power detection of the gearbox drive assembly 2 is carried out, the gearbox drive assembly 2 is sleeved on the top of the support platform 1, and the threaded column 10 is rotated at this time, so that the threaded column 10 can drive the extrusion plate 11 to be tightly squeezed on the surface of the gearbox drive assembly 2, thereby achieving the extrusion and fixing effect of the gearbox drive assembly 2, thereby achieving the fixing effect of the gearbox drive assembly 2.

[0029] The tooth plate 12 is in close contact with the front side of the gearbox drive assembly 2, and the tooth plate 12 is movably sleeved on the top of the support platform 1; by providing the tooth plate 12, when the gearbox drive assembly 2 is squeezed and fixed, the tooth plate 12 can greatly improve the friction between the extrusion plate 11 and the gearbox drive assembly 2, that is, the stability of the gearbox drive assembly 2 after being fixed is improved, thereby avoiding the problem of shaking of the gearbox drive assembly 2 during operation.

[0030] The heat dissipation mechanism 13 includes a ventilation hood 131, which is fixedly connected to the top of the support platform 1. A rotating motor 132 is fixedly installed inside the ventilation hood 131, and a fan blade 133 is fixedly sleeved on the output shaft of the rotating motor 132. By setting the heat dissipation mechanism 13, when the gearbox drive assembly 2 is tested, the rotating motor 132 is started, so that the rotating motor 132 can drive the fan blade 133 to rotate rapidly, so that the fan blade 133 can drive the air inside the electromagnetic cover 7 to flow rapidly, thereby improving the heat dissipation speed inside the electromagnetic cover 7, thereby improving the stability of the electromagnetic cover 7 when working for a long time.

[0031] The protection mechanism 14 includes a limit groove 141, which is opened on the top of the support platform 1, and a protective cover 142 is movably sleeved inside the limit groove 141; by setting the protection mechanism 14, when the gearbox drive assembly 2 is tested, the protective cover 142 is sleeved inside the limit groove 141, so that the protective cover 142 can be movably sleeved on the outside of the gearbox drive assembly 2 and the flywheel 5, thereby achieving a sealing effect of the flywheel 5, thereby improving the safety during the drive assembly test.

[0032] The hydraulic column 15 and the support platform 1 are perpendicular to each other, and there are two hydraulic columns 15. By setting the hydraulic column 15, when the drive assembly test is carried out, the hydraulic column 15 is started so that the bottom of the hydraulic column 15 can be tightly pressed on the ground. At this time, the support platform 1 can greatly improve the friction between the support platform 1 and the ground, that is, the stability of the support platform 1 is improved.

[0033] The moving mechanism 16 includes a support column 161, which is fixedly connected to the bottom of the support platform 1, and a sliding wheel 162 is installed at the bottom of the support column 161; by setting the moving mechanism 16, when the drive assembly test device is moving and conveying, the support platform 1 is pushed, so that the sliding wheel 162 can drive the support platform 1 to move horizontally through the support column 161, that is, drive the gearbox drive assembly 2 to move horizontally, thereby facilitating the adjustment of the working position of the drive assembly test device.

[0034] The working principle of the electric vehicle rear drive assembly test device provided by the utility model is as follows:

[0035] Step 1: First, at the end of the automobile power test, start the control host 6 so that the control host 6 can control the electromagnetic cover 7 to start. At this time, a large magnetism can be generated inside the electromagnetic cover 7, so that the electromagnetic cover 7 can adsorb the rotating flywheel 5, that is, the braking effect of the flywheel 5 is achieved, and then the flywheel 5 is stopped without contact, so that the problem of serious wear of the flywheel 5 during friction braking is avoided, thereby improving the protection effect of the test device. When conducting the automobile drive detection test, start the gearbox drive assembly 2 and the control host 6, so that the gearbox drive assembly 2 can drive the flywheel 5 to rotate rapidly. At this time, the control host 6 can detect the rotation speed of the detection port 8 through the infrared sensor 9, thereby achieving the rotation speed detection effect of the flywheel 5, that is, achieving the automobile drive power detection effect. When performing the power detection of the gearbox drive assembly 2, the gearbox drive assembly 2 is sleeved on the support table. 1, and at this time, the threaded column 10 is rotated so that the threaded column 10 can drive the extrusion plate 11 to be tightly extruded on the surface of the gearbox drive assembly 2, thereby achieving the extrusion and fixing effect of the gearbox drive assembly 2, thereby achieving the fixing effect of the gearbox drive assembly 2. When the gearbox drive assembly 2 is extruded and fixed, the toothed plate 12 can greatly improve the friction between the extrusion plate 11 and the gearbox drive assembly 2, that is, improve the stability of the gearbox drive assembly 2 after being fixed, so as to avoid the problem of shaking of the gearbox drive assembly 2 during operation. When the gearbox drive assembly 2 is tested, the rotating motor 132 is started, so that the rotating motor 132 can drive the fan blades 133 to rotate rapidly, so that the fan blades 133 can drive the air inside the electromagnetic cover 7 to flow rapidly, thereby improving the heat dissipation speed inside the electromagnetic cover 7, thereby improving the stability of the electromagnetic cover 7 when working for a long time;

[0036] Step 2: When conducting the inspection test of the gearbox drive assembly 2, the protective cover 142 is sleeved inside the limiting groove 141, so that the protective cover 142 can be movably sleeved on the outside of the gearbox drive assembly 2 and the flywheel 5, thereby achieving the sealing effect of the flywheel 5, thereby improving the safety during the drive assembly test. When conducting the drive assembly test, start the hydraulic column 15 so that the bottom of the hydraulic column 15 can be tightly pressed on the ground. At this time, the support platform 1 can greatly improve the friction between the support platform 1 and the ground, that is, the stability of the support platform 1 is improved. When the drive assembly test device moves the conveyor number, the support platform 1 is pushed, so that the sliding wheel 162 can drive the support platform 1 to move horizontally through the support column 161, that is, drive the gearbox drive assembly 2 to move horizontally, thereby facilitating the adjustment of the working position of the drive assembly test device.

[0037] Compared with the related art, the electric vehicle rear drive assembly test device provided by the utility model has the following beneficial effects:

[0038] By setting the electromagnetic cover 7, when the automobile power test is finished, the control host 6 is started, so that the control host 6 can control the electromagnetic cover 7 to start. At this time, a large magnetism is generated inside the electromagnetic cover 7, so that the electromagnetic cover 7 can adsorb the rotating flywheel 5, that is, the braking effect of the flywheel 5 is achieved, and then the contactless stopping effect of the flywheel 5 is achieved, so that the problem of serious wear of the flywheel 5 during friction braking is avoided, thereby improving the protection effect of the test device.

[0039] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A test device for a rear drive assembly of an electric vehicle, comprising a support platform (1), characterized in that: A gearbox drive assembly (2) is fixedly mounted on the top of the support platform (1), a drive shaft (3) is fixedly mounted on the side of the gearbox drive assembly (2), a support plate (4) is fixedly connected to the top of the support platform (1), a flywheel (5) is fixedly sleeved on one end of the drive shaft (3), a control host (6) is fixedly mounted on the top of the support platform (1), an electromagnetic cover (7) is fixedly mounted on the top of the support platform (1), a detection port (8) is opened on the side of the flywheel (5), and a detection port (8) is provided on the side of the support plate (4). An infrared sensor (9) is fixedly installed, a threaded column (10) is threadedly sleeved on the front surface of the support platform (1), an extrusion plate (11) is movably sleeved on one end of the threaded column (10), a toothed plate (12) is fixedly connected to the outside of the extrusion plate (11), a heat dissipation mechanism (13) is arranged on the top of the support platform (1), a protective mechanism (14) is arranged on the top of the support platform (1), a hydraulic column (15) is installed on the bottom of the support platform (1), and a moving mechanism (16) is arranged on the bottom of the support platform (1).

2. The electric vehicle rear drive assembly test device according to claim 1, characterized in that: The electromagnetic cover (7) is movably sleeved on the bottom of the flywheel (5), and the input end of the electromagnetic cover (7) is electrically connected to the output end of the control host (6).

3. The electric vehicle rear drive assembly test device according to claim 1, characterized in that: The output end of the infrared sensor (9) is signal-connected to the input end of the control host (6), and the number of the infrared sensors (9) is two.

4. The electric vehicle rear drive assembly test device according to claim 1, characterized in that: The threaded column (10) and the extrusion plate (11) are perpendicular to each other, and the threaded column (10) is located in the middle of the extrusion plate (11).

5. The electric vehicle rear drive assembly test device according to claim 1, characterized in that: The tooth plate (12) is in close contact with the front face of the gearbox drive assembly (2), and the tooth plate (12) is movably sleeved on the top of the support platform (1).

6. The electric vehicle rear drive assembly test device according to claim 1, characterized in that: The heat dissipation mechanism (13) comprises a ventilation hood (131), wherein the ventilation hood (131) is fixedly connected to the top of the support platform (1), a rotating motor (132) is fixedly installed inside the ventilation hood (131), and a fan blade (133) is fixedly sleeved on the output shaft of the rotating motor (132).

7. The electric vehicle rear drive assembly test device according to claim 1, characterized in that: The protection mechanism (14) comprises a limiting groove (141), wherein the limiting groove (141) is provided on the top of the support platform (1), and a protection cover (142) is movably sleeved inside the limiting groove (141).

8. The electric vehicle rear drive assembly test device according to claim 1, characterized in that: The hydraulic columns (15) and the support platform (1) are perpendicular to each other, and there are two hydraulic columns (15).

9. The electric vehicle rear drive assembly test device according to claim 1, characterized in that: The moving mechanism (16) comprises a support column (161), wherein the support column (161) is fixedly connected to the bottom of the support platform (1), and a sliding wheel (162) is installed at the bottom of the support column (161).

Images