New energy automobile hub motor test board

Abstract

The invention relates to the technical field of hub motor detection, and particularly discloses a new energy automobile hub motor test board which comprises a test board body, a lifting mechanism used for storing a hub motor is arranged on the test board body, and the lifting mechanism has the function of adjusting the height of the hub motor; the lifting mechanism comprises a supporting plate, the supporting plate is connected with a support, and the support is connected with a height adjusting mechanism used for adjusting the height of the support. The hub motor is connected with the test shaft through a coupler, and one end, far away from the test shaft, of the hub motor is connected with the right support. The hub motor is connected with the test shaft through the coupling, the test shaft is connected with the plurality of aligned mounting seats, and the plurality of mounting seats jointly limit the test shaft and the hub motor, so that the rotating center lines of the test shaft and the hub motor coincide, the hub motor can rotate, and the actual use condition of the hub motor is simulated; therefore, the rotation of the connected test shaft is more practical, and the measured vibration amplitude of the test shaft is more accurate.

Description

Technical Field

[0001] The invention belongs to the technical field of wheel hub motor detection, and in particular relates to a new energy vehicle wheel hub motor test bench. Background Art

[0002] In-wheel motors drive the wheels directly through electric motors, without the need for traditional mechanical transmission components such as gearboxes and drive shafts.

[0003] In a Chinese patent with the publication number CN 113203948 B, a performance detection device for a hub motor is disclosed, which includes a detection platform, a motor to be detected located on the detection platform, a speed torque tester, a support docking seat, and a load motor. The output shaft of the motor to be detected passes through the speed torque tester and is docked with the output shaft of the load motor in the support docking seat. Both ends of the support docking seat are provided with bearing seats, and the bearing seats are provided with support bearings.

[0004] The hub motor in the above device is set on the detection platform, but during the detection process of the hub motor, some tests need to start the hub motor to make the hub motor rotate by itself, and the hub motor in the above device itself cannot rotate, which makes the above device have many limitations in testing the hub motor. In order to allow the hub motor itself to rotate, its height needs to be higher than the upper end surface of the detection platform, and the test shaft connected to it also needs to be higher than the detection platform by a certain distance. This leads to the need for external lifting equipment to assist in the installation of the hub motor, and the hub motor must be lifted to a certain height before it can be aligned with the test shaft. Therefore, the present application proposes a new energy vehicle hub motor test bench, which can make the hub motor rotate by itself to make up for the defects of the existing device, and a lifting mechanism is set to lift and lower the height of the hub motor, so that it can be easily aligned with the test shaft without the help of external lifting equipment. Summary of the invention

[0005] The purpose of the present invention is to provide a new energy vehicle hub motor test bench to solve the technical problems raised in the background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions: a new energy vehicle wheel hub motor test bench, comprising a test bench, the test bench is provided with a lifting mechanism for storing the wheel hub motor, and the lifting mechanism has the function of adjusting the height of the wheel hub motor;

[0007] The lifting mechanism comprises a supporting plate, the supporting plate is connected to a bracket, and the bracket is connected to a height adjustment mechanism for adjusting its height;

[0008] The wheel hub motor is connected to the test shaft through a coupling, one end of the wheel hub motor away from the test shaft is connected to the right support, one end of the test shaft away from the wheel hub motor is connected to the left support, and a plurality of mounting seats are installed on the test shaft;

[0009] The position of the test bench corresponding to the test axis is provided with an axis vibration amplitude detection mechanism, the axis vibration amplitude detection mechanism comprises a crescent block and a detector, the lower end of the crescent block is fixedly connected to a square rod, the square rod is inserted into a square tube, the square rod is connected to the detection block, the detector is used to measure the displacement direction and displacement amount of the detection block, a plurality of guide rods are interspersed between the square rod and the square tube, and a spring is sleeved on the outer side of the guide rod.

[0010] Preferably, the cross-section of the support plate includes a vertical side, a horizontal side, and an arcuate side, the vertical side and the arcuate side are respectively located on both sides of the horizontal side, and the height of the highest point of the vertical side and the height of the highest point of the arcuate side are both higher than the height of the horizontal side. Three support plates are provided, and the three support plates are symmetrically distributed about the center line of the hub motor.

[0011] Preferably, the height adjustment mechanism includes a support plate, two support plates are provided, and the two support plates are symmetrically distributed about the center line of the bracket, one end of the support plate is connected to the bracket, and the other end is connected to the slider, the slider is set on a track, and the track is located on the upper side of the end surface of the test bench.

[0012] Preferably, a cylinder is provided on the test bench, and the output end and the slider of the cylinder are installed with connecting plates, and a number of connecting rods are inserted between the two connecting plates. Each of the connecting plates is connected to two L-shaped plates symmetrically distributed front and back, and the L-shaped plates are slidably connected to the track.

[0013] Preferably, the test bench is provided with an emergency brake mechanism, which includes a brake plate and a telescopic mechanism. Two groups of emergency brake mechanisms are provided, and the two groups of emergency brake mechanisms are respectively located at the front and rear sides of the hub motor.

[0014] Preferably, the brake part in the brake plate faces the hub motor, the brake plate is connected to the output end of the telescopic mechanism, the telescopic mechanism is installed on the vertical frame, and the lower end surface of the vertical frame is in contact with the upper end surface of the test bench.

[0015] Preferably, the square tube is arranged on a bottom plate, the bottom plate is connected to a position adjustment mechanism, the position adjustment mechanism adjusts the position of the contact point between the crescent block and the test shaft, and the position adjustment mechanism includes a rack connected to the bottom plate.

[0016] Preferably, the rack is connected to the gear through tooth meshing transmission, the gear is connected to the output end of the drive motor, the drive motor is connected to the column through the motor bracket, the top of the base plate is connected to the guide block, and the guide block is inserted into the guide groove in the guide frame.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. In the present invention, the wheel hub motor is connected to the test shaft through a coupling, and the test shaft is connected to a plurality of aligned mounting seats. The plurality of mounting seats jointly restrict the test shaft and the wheel hub motor so that the center lines of rotation of the two coincide, allowing the wheel hub motor to rotate by itself, simulating its actual use, so that the rotation of the test shaft connected thereto is more realistic, and the vibration amplitude of the test shaft measured is more accurate.

[0019] 2. The hub motor in the present invention cooperates with the support plate in the lifting mechanism. The three support plates lift the hub motor from three directions. The hub motor is not easy to shake. Driven by the height adjustment mechanism, the hub motor moves relatively smoothly during the lifting process. The hub motor that runs smoothly is convenient to align and connect when connected to the test shaft.

[0020] 3. The present invention is internally provided with a shaft vibration amplitude detection mechanism. The wheel hub motor is started and drives the test shaft to rotate. During the rotation of the test shaft, its vibration will squeeze the crescent block. The crescent block will move up and down under the squeezing of the spring and the test shaft. The detector records the displacement amount and displacement direction of the square rod and the crescent block. The vibration amplitude during the rotation of the test shaft is judged according to the above values, and the vibration amplitude when the wheel hub motor rotates is judged.

[0021] Fourth, the present invention is internally provided with an emergency brake mechanism. When an unexpected situation occurs during the testing of the hub motor, the emergency brake mechanism is activated, and the internal telescopic mechanism drives the brake plate close to the hub motor to make it stop quickly, thereby providing safety protection for the test. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is one of the structural schematic diagrams of the new energy vehicle hub motor test bench in the present invention.

[0023] Figure 2 This is the second structural schematic diagram of the new energy vehicle hub motor test bench in the present invention.

[0024] Figure 3 This is the third structural schematic diagram of the new energy vehicle hub motor test bench in the present invention.

[0025] Figure 4 For the present invention Figure 3 Schematic diagram of the structure at A in the middle.

[0026] Figure 5 It is a structural schematic diagram of the lifting mechanism and the test shaft in the present invention.

[0027] Figure 6 It is a structural schematic diagram of the central axis vibration amplitude detection mechanism of the present invention.

[0028] In the figure: 1, test bench; 2, hub motor; 3, lifting mechanism; 301, support plate; 3011, vertical edge; 3012, horizontal edge; 3013, arc edge; 302, bracket; 303, support plate; 304, slider; 305, cylinder; 306, connecting plate; 307, connecting rod; 308, L-shaped plate;

[0029] 4. Test shaft; 5. Left support; 6. Right support; 7. Emergency brake mechanism; 701. Brake plate; 702. Telescopic mechanism;

[0030] 8. Shaft vibration amplitude detection mechanism; 801. Crescent block; 802. Square tube; 803. Guide rod; 804. Detector; 805. Rack; 806. Gear; 807. Drive motor; 808. Guide block; 809. Guide frame. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] Reference Figure 1-Figure 6 A new energy vehicle wheel hub motor test bench includes a test bench 1, on which a lifting mechanism 3 for storing a wheel hub motor 2 is provided, and the lifting mechanism 3 has a function of adjusting the height of the wheel hub motor 2.

[0033] Furthermore, the lifting mechanism 3 includes a support plate 301, and the cross section of the support plate 301 includes a vertical side 3011, a horizontal side 3012, and an arcuate side 3013. The vertical side 3011 and the arcuate side 3013 are respectively located on both sides of the horizontal side 3012, and the height of the highest point of the vertical side 3011 and the height of the highest point of the arcuate side 3013 are both higher than the height of the horizontal side 3012, so that a storage groove is formed inside the support plate 301, and the hub motor 2 is inserted into the storage groove. Three support plates 301 are provided, and the three support plates 301 are symmetrically distributed about the center line of the hub motor 2. The support plates 301 The bracket 302 is connected, and the bracket 302 is connected to a height adjustment mechanism for adjusting its height; the hub motor 2 is placed in the support plate 301 in the lifting mechanism 3, and the support plate 301 lifts the hub motor 2. Through the three support plates 301 lifting from three directions, the hub motor 2 is relatively stable and not easy to shake during the lifting process driven by the height adjustment mechanism. The height adjustment mechanism can adjust the height of the hub motor 2, and the hub motor 2 is relatively stable during operation. When the hub motor 2 that runs smoothly is connected to the test shaft 4, it is more convenient to align and connect.

[0034] Specifically, the height adjustment mechanism includes a support plate 303, two support plates 303 are provided, and the two support plates 303 are symmetrically distributed about the center line of the bracket 302, one end of the support plate 303 is connected to the bracket 302, and the other end is connected to the slider 304, the slider 304 is set on a track, and the track is located on the upper side of the upper end surface of the test bench 1, and a cylinder 305 is provided on the test bench 1. The cylinder 305 adopts a bidirectional cylinder, which has two output ends. The output end of the cylinder 305 and the slider 304 are both installed with a connecting plate 306, and a number of connecting rods 307 are interspersed between the two connecting plates 306, and each connecting plate 306 is connected to two L-shaped plates 308 symmetrically distributed front and back, and the L-shaped plate 308 is slidably connected to the track.

[0035] When the height adjustment mechanism is activated, the cylinder 305 inside it extends or contracts, and can pull the bracket 302 up and down through the support plate 303. For details, refer to Figure 3 , Figure 4 , the cylinder 305 extends, which can push the slider 304 to move to the side away from the cylinder 305, and the slider 304 pulls the bracket 302 to move downward through the support plate 303, at this time the support plate 301 moves downward, conversely, the cylinder 305 contracts, the slider 304 moves to the side close to the cylinder 305, and the slider 304 pushes the bracket 302 to move upward through the support plate 303, thereby driving the support plate 301 to move upward; the L-shaped plate 308, the slider 304, the track and other components play a guiding role, allowing the slider 304 to move more smoothly, the L-shaped plate 308 and the track can transmit the force received by the slider 304 during the movement, so that the slider 304 can distribute the force to the track at various parts of the track, so that the slider 304 is subjected to balanced force at various locations during the up and down movement of the support plate 301, and is not easy to deform.

[0036] Furthermore, the wheel hub motor 2 is connected to the test shaft 4 through a coupling, the end of the wheel hub motor 2 away from the test shaft 4 is connected to the right support 6, the end of the test shaft 4 away from the wheel hub motor 2 is connected to the left support 5, and a number of mounting seats are installed on the test shaft 4; the wheel hub motor 2 drives the test shaft 4 to rotate through the coupling, so that it rotates on the test bench 1, and the data during the rotation process, such as speed, noise, etc., are recorded as data for inferring the test results of the wheel hub motor 2. The test shaft 4 is connected to multiple mounting seats, and the multiple mounting seats are aligned to allow the rotation centers of the test shaft 4 and the wheel hub motor 2 to coincide, so as to avoid shaking of the test shaft 4 due to installation accuracy, and eliminate one of the external factors of the amplitude detection result of the test shaft 4.

[0037] The hub motor 2 will rotate during the test. When an emergency situation occurs during the test, such as the test shaft 4 vibrates loudly or parts fall off, the hub motor 2 needs to be shut down as soon as possible. Therefore, an emergency brake mechanism 7 is provided on the test bench 1. The emergency brake mechanism 7 includes a brake plate 701 and a telescopic mechanism 702. There are two groups of emergency brake mechanisms 7, and the two groups of emergency brake mechanisms 7 are respectively located on the front and rear sides of the hub motor 2. The brake part of the brake plate 701 faces the hub motor 2. The brake plate 701 is connected to the output end of the telescopic mechanism 702. The telescopic mechanism 702 is installed on the vertical frame, and the lower end surface of the vertical frame is in contact with the upper end surface of the test bench 1.

[0038] When the wheel hub motor 2 rotates, it is necessary to measure the vibration amplitude during the rotation process. Specifically, the vibration amplitude of the wheel hub motor 2 connected thereto is determined by testing the vibration amplitude of the test shaft 4. In order to achieve the above purpose, an axis vibration amplitude detection mechanism 8 is provided at the position of the test bench 1 corresponding to the test shaft 4. The axis vibration amplitude detection mechanism 8 includes a crescent block 801 and a detector 804. The lower end of the crescent block 801 is fixedly connected to a square rod, which is inserted into a square tube 802. The square rod is connected to a detection block. The detector 804 is used to measure the displacement direction and displacement of the detection block. The vibration amplitude of the test shaft 4 in the process of rotating with the wheel hub motor 2 is determined based on the above information. A number of guide rods 803 are inserted between the square rod and the square tube 802, and a spring is sleeved on the outer side of the guide rod 803.

[0039] Specifically, the square tube 802 is arranged on the base plate, and the base plate is connected to the position adjustment mechanism, and the position adjustment mechanism adjusts the position of the contact point between the crescent block 801 and the test shaft 4. It should be noted that the position adjustment mechanism includes a rack 805, and the rack 805 is connected to the base plate. The rack 805 is connected to the gear 806 through a tooth meshing transmission, and the gear 806 is connected to the output end of the drive motor 807. The drive motor 807 is connected to the column through a motor bracket, and the top of the base plate is connected to the guide block 808, and the guide block 808 is inserted into the guide groove in the guide frame 809; the position of the connection point between the crescent block 801 and the test shaft 4 is adjusted by the position adjustment mechanism, so that when measuring the vibration amplitude of the test shaft 4, the connection point can be changed to measure the vibration amplitude at multiple points of the test shaft 4.

[0040] Working principle:

[0041] The wheel hub motor 2 is placed inside the three supporting plates 301, and the height of the supporting plates 301 is adjusted by the height adjustment mechanism to align the wheel hub motor 2 with the test shaft 4, and then the wheel hub motor 2 is connected to the test shaft 4 through the coupling. After the wheel hub motor 2 is connected to the test shaft 4, the height of the supporting plate 301 is adjusted by the height adjustment mechanism to leave a certain gap between it and the wheel hub motor 2, so that the lifting mechanism 3 will not hinder the rotation of the wheel hub motor 2;

[0042] Subsequently, the hub motor 2 is started, which drives the test shaft 4 to rotate. The vibration amplitude of the test shaft 4 during rotation is measured by the shaft vibration amplitude detection mechanism 8. During the rotation of the test shaft 4, its vibration will squeeze the crescent block 801, and the crescent block 801 will move up and down under the compression of the spring and the test shaft 4. The detector 804 records the displacement amount and displacement direction of the square rod and the crescent block 801, and determines the vibration amplitude of the test shaft 4 during rotation based on the above numerical values.

[0043] 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 new energy vehicle wheel hub motor test bench, comprising a test bench (1), characterized in that: The test bench (1) is provided with a lifting mechanism (3) for storing the wheel hub motor (2), and the lifting mechanism (3) has the function of adjusting the height of the wheel hub motor (2); The lifting mechanism (3) comprises a supporting plate (301), the supporting plate (301) is connected to a bracket (302), and the bracket (302) is connected to a height adjustment mechanism for adjusting its height; The wheel hub motor (2) is connected to the test shaft (4) via a coupling, one end of the wheel hub motor (2) away from the test shaft (4) is connected to a right support (6), one end of the test shaft (4) away from the wheel hub motor (2) is connected to a left support (5), and a plurality of mounting seats are mounted on the test shaft (4); The test bench (1) is provided with an axis vibration amplitude detection mechanism (8) at a position corresponding to the test axis (4), the axis vibration amplitude detection mechanism (8) comprising a crescent block (801) and a detector (804), the lower end of the crescent block (801) is fixedly connected to a square rod, the square rod is inserted into a square tube (802), the square rod is connected to a detection block, the detector (804) is used to measure the displacement direction and displacement amount of the detection block, a plurality of guide rods (803) are inserted between the square rod and the square tube (802), and a spring is sleeved on the outer side of the guide rod (803).

2. A new energy vehicle hub motor test bench according to claim 1, characterized in that: The cross section of the support plate (301) comprises a vertical side (3011), a horizontal side (3012), and an arcuate side (3013); the vertical side (3011) and the arcuate side (3013) are respectively located on both sides of the horizontal side (3012); the height of the highest point of the vertical side (3011) and the height of the highest point of the arcuate side (3013) are both higher than the height of the horizontal side (3012); three support plates (301) are provided, and the three support plates (301) are symmetrically distributed about the center line of the hub motor (2).

3. A new energy vehicle hub motor test bench according to claim 1, characterized in that: The height adjustment mechanism comprises a support plate (303), two support plates (303) are provided, and the two support plates (303) are symmetrically distributed about the center line of the bracket (302), one end of the support plate (303) is connected to the bracket (302), and the other end is connected to a slider (304), and the slider (304) is arranged on a track, and the track is located on the upper side of the upper end surface of the test bench (1).

4. A new energy vehicle hub motor test bench according to claim 3, characterized in that: The test bench (1) is provided with a cylinder (305), the output end of the cylinder (305) and the slider (304) are both provided with connecting plates (306), a plurality of connecting rods (307) are inserted between the two connecting plates (306), each of the connecting plates (306) is connected to two L-shaped plates (308) symmetrically distributed front and back, and the L-shaped plates (308) are slidably connected to the track.

5. The new energy vehicle hub motor test bench according to claim 1, characterized in that: The test bench (1) is provided with an emergency brake mechanism (7), which comprises a brake plate (701) and a telescopic mechanism (702). Two groups of the emergency brake mechanism (7) are provided, and the two groups of the emergency brake mechanism (7) are respectively located at the front and rear sides of the wheel hub motor (2).

6. A new energy vehicle hub motor test bench according to claim 5, characterized in that: The brake part in the brake plate (701) faces the wheel hub motor (2), the brake plate (701) is connected to the output end of the telescopic mechanism (702), the telescopic mechanism (702) is installed on the vertical frame, and the lower end surface of the vertical frame is attached to the upper end surface of the test bench (1).

7. A new energy vehicle hub motor test bench according to claim 1, characterized in that: The square tube (802) is arranged on a bottom plate, the bottom plate is connected to a position adjustment mechanism, the position adjustment mechanism adjusts the position of the contact point between the crescent block (801) and the test shaft (4), the position adjustment mechanism comprises a rack (805), and the rack (805) is connected to the bottom plate.

8. A new energy vehicle hub motor test bench according to claim 7, characterized in that: The rack (805) is connected to the gear (806) through tooth meshing transmission, the gear (806) is connected to the output end of the driving motor (807), the driving motor (807) is connected to the column through the motor bracket, the top of the bottom plate is connected to the guide block (808), and the guide block (808) is inserted into the guide groove in the guide frame (809).

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