Rear vibration table for vibration test of frame of two-wheeled electric vehicle

Abstract

The utility model provides a two-wheeled electric vehicle frame vibration test rear vibration table, which comprises a bottom plate and an end head, a fixed seat is fixedly arranged on the surface of the bottom plate, a lifting rod is movably sleeved in the top end of the fixed seat, the bottom end of the lifting rod is in transmission connection with a linkage assembly, the end head is fixedly connected with the top of the lifting rod, and a transverse shaft is rotationally connected in the end head. A limiting mechanism used for installing a frame of the two-wheeled electric vehicle is arranged on the transverse shaft, and locking assemblies are fixedly connected to the top of the end and arranged on the two sides of the limiting mechanism. The rear vibration table is used for supporting the tail of the frame of the two-wheeled electric vehicle, the high-frequency vibration of the rear vibration table is used for simulating the driving condition of the two-wheeled electric vehicle, the frame is rapidly installed through the limiting mechanism on the transverse shaft, and the two sides of the tail end of the frame are limited through the locking assemblies after installation is completed. Therefore, the problem of loosening in the vibration process is avoided, and the stability in the vibration test process is ensured.

Description

Technical Field

[0001] This utility model relates to a vibration test platform for the frame of a two-wheeled electric vehicle, belonging to the technical field of two-wheeled electric vehicle frame testing. Background Technology

[0002] Two-wheeled electric vehicles, also known as electric two-wheelers, refer to mechatronic personal transportation vehicles that use batteries as auxiliary power and are based on two-wheeled vehicles, with the addition of components such as motors, controllers, and display instrument systems.

[0003] The frame of a two-wheeled electric vehicle is the basic structure of the vehicle. It supports the weight of the entire vehicle and connects various components. As the basic structure of a two-wheeled electric vehicle, the quality and performance of the frame directly affect the stability and safety of the vehicle. A high-quality frame can withstand greater impact forces, ensuring the stability and safety of the vehicle during driving. At the same time, the material and manufacturing process of the frame will also affect the weight, durability, and comfort of the vehicle.

[0004] The frame of a two-wheeled electric vehicle is its skeleton. Its rear end uses a movable steel structure connected to the frame and for wheel mounting. Shock absorbers connect the steel structure to the frame to provide shock absorption at the rear. The stability of a two-wheeled electric vehicle mainly depends on the shock absorption effect at the rear of the frame. Vibration testing is usually required on the manufactured frame. However, it is difficult to simulate the vibration pattern of an electric vehicle during testing, and the frame is inconvenient to install on the test bench. High-frequency vibration can easily lead to loosening of the connections, reducing the effectiveness of the vibration test and even damaging the frame, thus lowering the overall vibration test results for the two-wheeled electric vehicle. Utility Model Content

[0005] This invention addresses the technical problem of unstable installation of the frame of a two-wheeled electric vehicle during vibration testing by providing a vibration testing platform for the frame of such vehicles.

[0006] This utility model solves the above-mentioned technical problems through the following technical solutions:

[0007] This utility model provides a vibration test platform for the frame of a two-wheeled electric vehicle, comprising:

[0008] A base plate, on the surface of which a fixed seat is fixedly installed, a lifting rod is movably sleeved inside the top of the fixed seat, and the bottom end of the lifting rod is connected to the linkage component in a transmission manner; a drive mechanism is fixedly installed on the surface of the base plate, and the drive mechanism is connected to the linkage component in a transmission manner.

[0009] The end head is fixedly connected to the top of the lifting rod. A horizontal shaft is rotatably connected inside the end head. A limiting mechanism for mounting the frame of a two-wheeled electric vehicle is provided on the horizontal shaft. A locking component is fixedly connected to the top of the end head. The locking component is located on both sides of the limiting mechanism.

[0010] In this technical solution, the surface of the base plate is connected to the U-shaped fixed seat by screws. The fixed seat is equipped with a linkage component. Bearing seats are fixedly installed on the surface of the base plate on both sides of the fixed seat, and the linkage component is rotatably connected to the inside of the bearing seat.

[0011] In this technical solution, the linkage component includes an eccentric shaft, both ends of which are located inside the bearing housing. A bushing is fitted onto the surface of the eccentric shaft, the top of which is fixedly connected to a connecting piece, and the connecting piece is rotatably connected to the bottom end of the lifting rod.

[0012] In this technical solution, the driving mechanism includes a drive motor and a housing. The inner wall of the housing is rotatably connected to an eccentric shaft. The ends of the drive motor and the eccentric shaft are fixedly connected to sprockets. The sprockets are connected to each other by chain drive, and both the sprockets and the chain are located inside the housing.

[0013] In this technical solution, both the housing and the motor are fixedly connected to the surface of the base plate, and the housing and the motor are located on both sides of the fixed base and at the edge of the base plate.

[0014] In this technical solution, the lifting rod has a square cross-section and a square end at the top.

[0015] In this technical solution, both ends of the horizontal axis are provided with limiting mechanisms. The limiting mechanism consists of a limiting sleeve and a connecting sleeve. The limiting sleeve is movably sleeved with both ends of the horizontal axis and is correspondingly arranged on both sides of the end. The connecting sleeve is movably sleeved with the surface of the horizontal axis and is movably inserted into the inside of the limiting sleeve.

[0016] In this technical solution, both ends of the horizontal shaft are movably sleeved with gaskets, the gaskets are in contact with the ends of the connecting sleeves, and both ends of the horizontal shaft located outside the gaskets are threadedly connected to nuts.

[0017] In this technical solution, the locking component includes a fixing block, which is fixedly connected to the top of the end, and the inside of the fixing block is rotatably connected to the sleeve. One side of the fixing block is connected to the sleeve through a torsion spring, and both ends of the sleeve are movably sleeved with limit rods. The adjacent ends of the two limit rods are respectively fixedly connected to the two ends of the tension spring.

[0018] In this technical solution, the limiting rod has an L-shaped structure and contacts the surface of the nut. A rib is fixedly connected to the surface of the limiting rod, and the rib slides and engages with the groove in the sleeve.

[0019] Based on common knowledge in the field, the above-mentioned preferred conditions can be combined arbitrarily to obtain various preferred embodiments of this utility model.

[0020] The positive and progressive effects of this utility model are as follows:

[0021] The aforementioned vibration test platform for a two-wheeled electric vehicle frame supports the rear of the vehicle frame and uses high-frequency vibration to simulate the driving conditions of the two-wheeled electric vehicle. A limiting mechanism on the horizontal axis enables rapid frame installation, while allowing the frame to rotate on the horizontal axis during vibration testing, reducing unnecessary wear. After installation, locking components limit the rear ends of the frame to prevent loosening during vibration, ensuring stability during the vibration test and facilitating quick assembly and disassembly of the frame, thus improving the performance of the vibration test platform. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model.

[0023] Figure 2 This is a half-section three-dimensional structural diagram of the fixing block of this utility model.

[0024] Figure 3 This utility model Figure 2 A magnified schematic diagram of the structure at point A in the middle.

[0025] Figure 4 This is a top view of the structure of this utility model.

[0026] Explanation of reference numerals in the attached figures

[0027] 1. Base plate; 2. Fixing seat; 3. Drive motor; 4. Housing; 5. Bearing seat; 6. Eccentric shaft; 7. Sprocket; 8. Chain; 9. Bushing; 10. Connecting piece; 11. Lifting rod; 12. End; 13. Horizontal shaft; 14. Limiting sleeve; 15. Washer; 16. Nut; 17. Fixing block; 18. Sleeve; 19. Torsion spring; 20. Limiting rod; 21. Raised rib; 22. Tension spring; 23. Connecting sleeve. Detailed Implementation

[0028] The present invention will be further described below by way of embodiments, but the present invention is not limited to the scope of the embodiments described herein.

[0029] like Figure 1-4 As shown, the vibration test platform for the frame of the two-wheeled electric vehicle includes:

[0030] A base plate 1, a fixed seat 2 is fixedly installed on the surface of the base plate 1, a lifting rod 11 is movably sleeved inside the top of the fixed seat 2, and the bottom end of the lifting rod 11 is connected to the linkage component in a transmission manner. A drive mechanism is fixedly installed on the surface of the base plate 1, and the drive mechanism is connected to the linkage component in a transmission manner.

[0031] End 12 is fixedly connected to the top of lifting rod 11. A horizontal shaft 13 is rotatably connected inside the end 12. A limiting mechanism for the frame installation of a two-wheeled electric vehicle is provided on the horizontal shaft 13. A locking component is fixedly connected to the top of the end 12. The locking component is located on both sides of the limiting mechanism.

[0032] The base plate 1 is connected to the U-shaped fixed seat 2 by screws. The fixed seat 2 is equipped with a linkage component. Bearing seats 5 are fixedly installed on the surface of the base plate 1 on both sides of the fixed seat 2, and the linkage component is rotatably connected to the bearing seats 5. The linkage component includes an eccentric shaft 6, both ends of which are located inside the bearing seats 5. A bushing 9 is sleeved on the surface of the eccentric shaft 6. The top of the bushing 9 is fixedly connected to the connecting piece 10, and the connecting piece 10 is rotatably connected to the bottom end of the lifting rod 11.

[0033] In this technical solution, the eccentric shaft 6 is supported by the bearing seat 5, so that when the eccentric shaft 6 drives the bushing 9 to rotate, the bushing 9 rotates eccentrically around the eccentric shaft 6. When the bushing 9 rotates, it drives the lifting rod 11 to rise and fall stably inside the fixed seat 2 through the connecting piece 10, thereby driving the end 12 to rise and fall continuously to simulate the frame vibration test of a two-wheeled electric vehicle.

[0034] The driving mechanism includes a drive motor 3 and a housing 4. The inner wall of the housing 4 is rotatably connected to an eccentric shaft 6. The ends of the drive motor 3 and the eccentric shaft 6 are fixedly connected to sprockets 7. The sprockets 7 are connected by a chain 8, and both the sprockets 7 and the chain 8 are located inside the housing 4. The housing 4 and the motor are fixedly connected to the surface of the base plate 1. The housing 4 and the motor are located on both sides of the fixed seat 2 and at the edge of the base plate 1. The lifting rod 11 has a square cross-section, and the top of the lifting rod 11 is provided with a square end 12.

[0035] In this technical solution, when the drive motor 3 is started, the eccentric shaft 6 is driven to rotate synchronously through the transmission of the sprocket 7 and the chain 8. The sprocket 7 and the chain 8 are set inside the housing 4 to play a protective role, thereby driving the eccentric shaft 6 to rotate stably in the bearing seat 5. At the same time, the square structure of the lifting rod 11 can ensure its stable lifting and lowering, thereby realizing the high-frequency vibration of the frame.

[0036] Both ends of the horizontal shaft 13 are provided with limiting mechanisms, which consist of limiting sleeves 14 and connecting sleeves 23. The limiting sleeves 14 are movably sleeved with both ends of the horizontal shaft 13 and are correspondingly arranged on both sides of the end 12. The connecting sleeves 23 are movably sleeved with the surface of the horizontal shaft 13 and are movably inserted into the inside of the limiting sleeves 14. Both ends of the horizontal shaft 13 are movably sleeved with gaskets 15. The gaskets 15 are in contact with the ends of the connecting sleeves 23, and both ends of the horizontal shaft 13 located outside the gaskets 15 are threadedly connected to nuts 16.

[0037] In this technical solution, during vibration testing, the rear end of the two-wheeled electric vehicle frame is inserted into the connecting sleeve 23 of the transverse shaft 13. Since the rear end of the frame has a through hole for installing the wheel, the frame is simply placed on both sides of the end 12. First, the limiting sleeve 14 and the connecting sleeve 23 are placed between the end 12 and the frame. The transverse shaft 13 is passed through the through hole of the end 12 and the frame. After the washer 15 and the nut 16 are installed, the washer 15 pushes the frame and makes it press against the limiting sleeve 14. At this time, the frame is located on the surface of the connecting sleeve 23, so that the transverse shaft 13 and the connecting sleeve 23 can rotate relative to each other. During vibration testing, the end 12 and the transverse shaft 13 drive the frame to vibrate up and down, causing the shock absorber at the rear end of the frame to extend and retract to achieve vibration testing.

[0038] The locking assembly includes a fixing block 17, which is fixedly connected to the top of the end 12. The fixing block 17 is rotatably connected to the sleeve 18. One side of the fixing block 17 is connected to the sleeve 18 via a torsion spring 19. Both ends of the sleeve 18 are movably sleeved with limit rods 20. The adjacent ends of the two limit rods 20 are fixedly connected to the ends of tension springs 22, respectively. The limit rods 20 have an L-shaped structure and are in contact with the surface of the nut 16. The surface of the limit rods 20 is fixedly connected with a rib 21, and the rib 21 is engaged and slidably fitted into the groove of the sleeve 18.

[0039] In this technical solution, after the frame is installed, the limiting rods 20 on both sides are pulled to pass around the two ends of the horizontal shaft 13 and rotated. The protruding ribs 21 on the limiting rods 20 cooperate with the sleeves 18, causing the limiting rods 20 to drive the sleeves 18 to rotate synchronously within the fixing block 17, causing the torsion spring 19 to deform. Then, the limiting rods 20 are released towards the center. The limited rods 20 in the stretched state return to their original position and abut against the outside of the nut 16. At this time, the limiting rods 20 are released, and the elasticity of the torsion spring 19 causes the limiting rods 20 to overlap the surface of the horizontal shaft 13. At this time, the elasticity of the tension spring 22 limits the nut 16 to prevent loosening. The fixing block 17 vibrates synchronously with the frame, which can ensure the stability of the frame after installation.

[0040] This utility model is not limited to the above-described embodiments. Any changes in its shape or structure fall within the protection scope of this utility model. The protection scope of this utility model is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of this utility model, but all such changes and modifications fall within the protection scope of this utility model.

Claims

1. A shock table for a two-wheeled electric vehicle after a frame shock test, characterized by, Include: The bottom plate (1) is fixedly installed with a fixed seat (2) on the surface, the top end of the fixed seat (2) is movably sleeved with a lifting rod (11), and the bottom end of the lifting rod (11) is drivingly connected with a linkage assembly, and the bottom plate (1) is fixedly installed with a driving mechanism on the surface, and the driving mechanism is drivingly connected with the linkage assembly; The end head (12) is fixedly connected with the top of the lifting rod (11), the end head (12) is rotatably connected with a horizontal shaft (13) inside, the horizontal shaft (13) is provided with a limiting mechanism for mounting the frame of the two-wheeled electric vehicle, and the top of the end head (12) is fixedly connected with a locking assembly, and the locking assembly is arranged on both sides of the limiting mechanism.

2. The shock platform for a two-wheeled electric vehicle frame shock testing after a shock test according to claim 1, wherein: The bottom plate (1) is connected with the U-shaped fixed seat (2) by screws, the linkage assembly is arranged in the fixed seat (2), bearing seats (5) are fixedly installed on the surface of the bottom plate (1) on both sides of the fixed seat (2), and the linkage assembly is rotatably connected with the bearing seats (5) inside.

3. The shock platform for a two-wheeled electric vehicle frame shock testing after a shock test of claim 1, wherein: The linkage assembly comprises an eccentric shaft (6), both ends of the eccentric shaft (6) are located in the bearing seat (5), the surface of the eccentric shaft (6) is sleeved with a shaft sleeve (9), the top of the shaft sleeve (9) is fixedly connected with a connecting piece (10), and the connecting piece (10) is rotatably connected with the bottom end of the lifting rod (11).

4. The shock platform for a two-wheeled electric vehicle frame shock testing after a shock test of claim 1, wherein: The driving mechanism comprises a driving motor (3) and a housing (4), the inner wall of the housing (4) is rotatably connected with the eccentric shaft (6), the driving motor (3) and the eccentric shaft (6) are fixedly connected with sprockets (7) at the ends, the sprockets (7) are drivingly connected through chains (8), and the sprockets (7) and the chains (8) are located in the housing (4).

5. The shock platform for a two-wheeled electric vehicle frame shock testing after a shock test of claim 4, wherein: The housing (4) and the motor are fixedly connected with the surface of the bottom plate (1), and the housing (4) and the motor are respectively located on both sides of the fixed seat (2) and on the edge of the bottom plate (1).

6. The shock platform for a two-wheeled electric vehicle frame shock testing after a shock test of claim 1, wherein: The lifting rod (11) is in a square structure, and the top of the lifting rod (11) is provided with a square end head (12).

7. The shock platform for a two-wheeled electric vehicle frame shock testing after a shock test of claim 1, wherein: Both ends of the horizontal shaft (13) are provided with limiting mechanisms, the limiting mechanisms are composed of limiting sleeves (14) and connecting sleeves (23), the limiting sleeves (14) are movably sleeved with both ends of the horizontal shaft (13), the limiting sleeves (14) are correspondingly arranged on both sides of the end head (12), the connecting sleeves (23) are movably sleeved with the surface of the horizontal shaft (13), and the connecting sleeves (23) are movably inserted into the limiting sleeves (14).

8. The shock platform for a two-wheeled electric vehicle frame shock testing after a shock test of claim 7, wherein: Both ends of the horizontal shaft (13) are movably sleeved with spacers (15), the spacers (15) are in contact with the ends of the connecting sleeves (23), and both ends of the horizontal shaft (13) outside the spacers (15) are threadedly connected with nuts (16).

9. The shock platform for a two-wheeled electric vehicle frame shock testing after a shock test of claim 1, wherein: The locking assembly comprises a fixed block (17), the fixed block (17) is fixedly connected with the top of the end head (12), the fixed block (17) is rotatably connected with a sleeve (18) inside, one side of the fixed block (17) is connected with the sleeve (18) through a torsional spring (19), both ends of the sleeve (18) are movably sleeved with limiting rods (20) inside, and adjacent ends of the two limiting rods (20) are fixedly connected with both ends of a tension spring (22).

10. The shock platform for a two-wheeled electric vehicle frame shock testing after a shock test of claim 9, wherein: The limiting rod (20) is L-shaped structure and is in surface contact with the nut (16), the limiting rod (20) is fixedly connected with the convex rib (21) on the surface, and the convex rib (21) is embedded and slid with the groove inside the sleeve (18).

Images