Fatigue test tool for turning handle of two-wheeled electric vehicle

Abstract

The utility model relates to a two-wheeled electric vehicle turning handle fatigue test tool, which comprises a tool table and is suitable for forward and reverse bidirectional fatigue test of a to-be-tested handlebar. A fixing seat is arranged on the tool table, a torsion mechanism and a pressing mechanism are symmetrically arranged by taking the fixing seat as a symmetric center, the torsion mechanism is used for a fatigue test of the rotating handle and comprises a motor for clamping the rotating handle to rotate in a reciprocating manner, and the pressing mechanism is used for a brake fatigue test and comprises a cylinder for pressing a brake in a reciprocating manner. According to the fatigue test tool for the turning handle of the two-wheeled electric vehicle, by simulating a long-time and high-frequency use scene, the problems of material fatigue, structure looseness, electronic element aging and the like are exposed in advance, and sudden failures in actual use are avoided.

Description

Two-wheeled electric vehicle throttle fatigue testing fixture Technical Field

[0001] This utility model relates to the field of fatigue testing fixtures for two-wheeled vehicles, and in particular to a fatigue testing fixture for the throttle handlebars of a two-wheeled electric vehicle. Background Technology

[0002] The throttle handlebar of a two-wheeled electric vehicle is a key component controlling acceleration and deceleration, and its durability directly affects riding safety. However, the production and inspection process of two-wheeled electric vehicles only involves brief testing, which cannot reflect the reliability and durability of the throttle handlebar, resulting in weak control over product quality. Fatigue testing can detect the reliability of the throttle handlebar during long-term use, preventing loss of control or brake failure due to wear or malfunction, thereby ensuring user safety.

[0003] Fatigue testing ensures that the throttle operates stably under various conditions, preventing frequent malfunctions or failures from impacting the riding experience. Good throttle performance contributes to improved overall user satisfaction. Furthermore, by simulating long-term use, fatigue testing can identify potential problems with the throttle, helping manufacturers improve their designs, extend its lifespan, reduce replacement frequency, and lower maintenance costs.

[0004] Throttle fatigue testing for two-wheeled electric vehicles is crucial for ensuring safety, improving user experience, extending lifespan, complying with regulations, reducing after-sales costs, enhancing competitiveness, and optimizing design. A throttle fatigue testing system for two-wheeled electric vehicles is undoubtedly an indispensable part of the electric vehicle production process. Summary of the Invention

[0005] In response to the shortcomings of the existing production technology, the applicant provides a reasonably structured fatigue testing fixture for the handlebars of two-wheeled electric vehicles, which can simulate the turning and braking actions of the handlebars on both sides to conduct fatigue testing.

[0006] The technical solution adopted in this utility model is as follows:

[0007] A fatigue testing fixture for a two-wheeled electric vehicle handlebar includes a fixture platform, suitable for bidirectional fatigue testing of the handlebar under test; the fixture platform is provided with a fixed seat, and a torsion mechanism and a pressing mechanism are symmetrically arranged around the fixed seat as the center of symmetry.

[0008] The torsion mechanism is used for throttle fatigue testing and includes a motor that clamps the throttle and rotates it back and forth.

[0009] The pressing mechanism is used for brake fatigue testing and includes a cylinder that reciprocates by pressing the brake.

[0010] As a further improvement to the above technical solution:

[0011] Both the torsion mechanism and the pressing mechanism are equipped with adjustment brackets. The adjustment brackets include a fixed frame that is fixedly installed on the tooling table, a sliding plate that slides longitudinally back and forth on the fixed frame, and a motor or cylinder that serves as the power source is installed on the sliding plate.

[0012] The output shaft of the motor is connected to a clamping part, which is elastically connected to the throttle of the handlebar to be tested.

[0013] The inner wall of the clamping part is provided with elastic points, which abut against the throttle.

[0014] The clamping part has an opening in the side wall, through which a moving part that abuts against the throttle handle passes.

[0015] The cylinder piston rod of the pressing mechanism is connected to a roller, which is pushed by the cylinder to press the brake of the handlebar to be tested.

[0016] The cylinder piston rod is equipped with a push plate, and rollers are connected to the push plate.

[0017] The rollers are fixedly connected to the push plate.

[0018] The roller is rotatably connected to the push plate, and the outer surface of the roller makes rolling contact with the brake.

[0019] The handlebars of the vehicle under test are positioned by passing through the fixed base.

[0020] The beneficial effects of this utility model are as follows:

[0021] This application presents a fatigue testing fixture for the throttle handle of two-wheeled electric vehicles. By simulating prolonged, high-frequency usage scenarios, it ensures that the throttle handle maintains stable function even after repeated operation. It proactively exposes issues such as material fatigue, structural loosening, and electronic component aging, preventing sudden malfunctions during actual use. Furthermore, through test data, it allows for the selection of wear-resistant, corrosion-resistant, and aging-resistant materials to extend the throttle handle's lifespan. It also identifies vulnerable components, enabling targeted optimization of the structural design to reduce wear and provide users with higher-quality products. Attached Figure Description

[0022] Figure 1 is a schematic diagram of the overall tooling structure of this application.

[0023] Figure 2 is a schematic diagram of the fixed base structure of this utility model.

[0024] Figure 3 is a schematic diagram of the torsion mechanism of this utility model.

[0025] Figure 4 is a schematic diagram of the pressing mechanism of this utility model.

[0026] The components include: 1. Tooling table; 2. Fixture; 3. Handlebar to be tested; 4. Torsion mechanism; 5. Pressing mechanism;

[0027] 301. Throttle; 302. Brake;

[0028] 401. Motor; 402. Clamping part; 403. Fixing frame; 404. Sliding plate; 405. Screw; 406. Elastic point; 407. Hole;

[0029] 501. Cylinder; 502. Push plate; 503. Roller; 504. Connecting shaft. Detailed Implementation

[0030] The specific embodiments of this utility model are described below with reference to the accompanying drawings.

[0031] As shown in Figures 1-4, the fatigue testing fixture for the two-wheeled electric vehicle handlebar 301 in this embodiment includes a fixture platform 1, suitable for bidirectional fatigue testing of the handlebar 3 under test; a fixed base 2 is provided on the fixture platform 1, and a torsion mechanism 4 and a pressing mechanism 5 are symmetrically arranged around the fixed base 2 as the center of symmetry.

[0032] The torsion mechanism 4 is used for fatigue testing of the throttle 301, and includes a motor 401 that clamps the throttle 301 and rotates it back and forth.

[0033] The pressing mechanism 5 is used for fatigue testing of the brake 302, including a cylinder 501 that reciprocates pressing the brake 302.

[0034] Both the torsion mechanism 4 and the pressing mechanism 5 are equipped with adjustment brackets. The adjustment brackets include a fixed frame 403 fixedly installed on the tooling table 1 and a sliding plate 404 that slides longitudinally back and forth on the fixed frame 403. A motor 401 or a cylinder 501, which serves as a power source, is installed on the sliding plate 404.

[0035] A clamping part 402 is connected to the output shaft of the motor 401, and the clamping part 402 is elastically connected to the throttle 301 of the handlebar 3 to be tested.

[0036] The inner wall of the clamping part 402 is provided with an elastic point 406, which abuts against the throttle 301.

[0037] The clamping part 402 has an opening 407 on its side wall, and a movable part that abuts against the throttle 301 passes through the opening 407.

[0038] The piston rod of the cylinder 501 of the pressing mechanism 5 is connected to a roller 503. The roller 503 is pushed by the cylinder 501 to press the brake 302 of the handlebar 3 to be tested.

[0039] A push plate 502 is provided on the piston rod of cylinder 501, and a roller 503 is connected to the push plate 502.

[0040] The roller 503 is fixedly connected to the push plate 502.

[0041] The roller 503 is rotatably connected to the push plate 502, and the outer circular surface of the roller 503 makes rolling contact with the brake 302.

[0042] The handlebar 3 of the vehicle under test is positioned by passing through the fixed seat 2.

[0043] The specific structure and working principle of this application are as follows:

[0044] The purpose of this application is to provide a fixture capable of simultaneously performing rotational fatigue testing of the throttle 301 and compressive fatigue testing of the brake 302. Furthermore, the fixture provided in this application can be used in both forward and reverse directions.

[0045] As shown in Figure 1, a fixed seat 2 is set on the tooling table 1. The fixed seat 2 can install the handlebar 3 to be tested in both directions. Referring to Figure 2, the handlebar fixed seat 2 in the figure adopts an L-shaped structure as the reference part. A protrusion is formed on the vertical section of the reference part. The handlebar 3 to be tested passes through the protrusion. A brake 302 is fitted on the end opposite to the throttle 301, so that the two sides of the fixed seat 2 are the throttle 301 and the brake 302 respectively. A torsion mechanism 4 is set next to the throttle 301, and a pressing mechanism 5 is set next to the brake 302.

[0046] As shown in Figures 1 and 3, the torsion mechanism 4 uses a motor 401 as the driving power source. A clamping part 402 is connected to the output shaft of the motor 401. The clamping part 402 clamps the limiting throttle 301. Under the drive of the motor 401, the throttle 301 is driven to reciprocate and twist, simulating the rotation action in actual driving.

[0047] To facilitate alignment of the clamping part 402 with the throttle 301, an adjustment bracket is provided in this embodiment to adjust the vertical height of the motor 401. The adjustment bracket includes a fixed frame 403 and a sliding plate 404 passing through the fixed frame 403. The motor 401 is mounted on the sliding plate 404. The sliding plate 404 bends and extends to the side wall of the motor 401 on the side facing the fixed base 2. On the one hand, this bend and extension can increase the mounting area of ​​the motor 401, and on the other hand, it plays a reinforcing role, preventing the stress caused by repeated reciprocating rotation from affecting the connection and causing loosening.

[0048] A screw 405 is connected to the top of the sliding plate 404. The screw 405 passes through the top wall of the fixed frame 403. When the screw 405 rotates, it drives the sliding plate 404 to rise and fall, which in turn drives the motor 401 to rise and fall.

[0049] Since the clamping part 402 in this embodiment is U-shaped as shown in Figure 3, no adjustment is needed in the horizontal direction. When the clamping part 402 is rotated so that the two sides of the opening of the U-shape are also in the vertical direction, when the motor 401 moves up and down, as long as it moves to the throttle 301, the throttle 301 will naturally fall into the clamping space of the clamping part 402 and be limited by the clamping part 402.

[0050] As an alternative implementation, the vertical screw 405 can be replaced with a horizontal installation, that is, a torsion mechanism 4 only needs to be adjusted in one direction, either vertically or horizontally; when adjusting in one direction, the clamping part 402 is rotated so that the opening faces the adjustment direction, and the handle 301 can be inserted into the clamping part 402 during the adjustment process.

[0051] There may be a gap between the clamping part 402 and the throttle 301, resulting in a loose clamping. This embodiment proposes two auxiliary limiting methods, as shown in the two structures in Figure 3. One method involves adding protruding elastic points 406, such as rubber or nylon points, to the inner wall of the clamping part 402. Since the throttle 301 itself is also elastic, slightly harder nylon points can also be used. The elastic points 406 abut against the throttle 301, providing sufficient friction between the throttle 301 and the clamping part 402, thus driving the throttle 301 to rotate.

[0052] Alternatively, a hole 407 can be made in the side wall of the clamping part 402, and a rotatable structure such as a screw can be installed. Taking a screw as an example, the screw can be rotated until it contacts the handle 301, which serves to limit the movement and achieve full rotation. To increase the frictional resistance, a contact piece can be added to the end of the screw to further increase the resistance.

[0053] As shown in Figures 1 and 4, a pressing mechanism 5 is also provided on the tooling table 1. The function of the pressing mechanism 5 is to continuously press the brake 302.

[0054] The pressing mechanism 5 also has an adjusting bracket, and the adjusting bracket structure used in the pressing mechanism 5 is the same as that of the adjusting bracket of the torsion mechanism 4. The difference is that the sliding plate 404 of the pressing mechanism 5 is a separate plate. A cylinder 501 is installed on the sliding plate 404 of the pressing mechanism 5. The piston rod end of the cylinder 501 is connected to a push plate 502, and a roller 503 is provided at one end of the push plate 502.

[0055] In this embodiment, two types of roller 503 are provided.

[0056] A roller 503 is fixed on a push plate 502 and coated with a Teflon or similar coating. The roller 503 is set perpendicular to the tooling table 1. The Teflon coating can reduce the frictional resistance between the roller and the brake 302, ensuring smooth pushing action while pushing the brake 302.

[0057] Another type is the rolling structure shown in Figure 4. The roller 503 is rotatably connected to the push plate 502 through the connecting shaft 504. When the push plate 502 drives the roller 503 to push forward and abut against the brake 302, the roller 503 will reduce friction by rolling. Under the premise of ensuring that the roller 503 can always push the brake 302, the frictional resistance is reduced.

[0058] Returning to Figure 1, it can be clearly seen that the arrangement of this application, with the fixed seat 2 as the reference, has a set of torsion mechanism 4 and pressing mechanism 5 on both sides of the fixed seat 2. This design makes the fixed seat 2 suitable for fatigue testing of the left and right handlebars. Each handlebar is equipped with a torsion mechanism 4 and a pressing mechanism 5, which further improves the integration of the tooling.

[0059] The advantage of this application is that it can provide bidirectional fatigue testing for both the left and right handlebars, and can also provide non-standard clamping parts 402 and pressing parts to effectively simulate rotation and pressing actions based on the action characteristics of the throttle 301 and brake 302, thus having the function of accurate simulation over a long period of time.

[0060] The above description is an explanation of the present utility model and not a limitation thereof. The scope of the present utility model is defined by the claims. Within the protection scope of the present utility model, any form of modification may be made.

Claims

1. A fatigue testing fixture for a two-wheeled electric vehicle throttle (301), comprising a fixture table (1), characterized in that: The tooling table (1) is equipped with a fixed seat (2) and a torsion mechanism (4) and a pressing mechanism (5) are symmetrically arranged with the fixed seat (2) as the center of symmetry. The torsion mechanism (4) is used for fatigue testing of the handlebar (301) and includes a motor (401) that clamps the handlebar (301) to rotate back and forth. The pressing mechanism (5) is used for fatigue testing of the brake (302) and includes a cylinder (501) that presses the brake (302) back and forth.

2. The fatigue testing fixture for the two-wheeled electric vehicle throttle (301) as described in claim 1, characterized in that: The torsion mechanism (4) and the pressing mechanism (5) are both equipped with adjustment brackets. The adjustment brackets include a fixed frame (403) fixedly installed on the tooling table (1) and a sliding plate (404) that slides longitudinally back and forth on the fixed frame (403). The motor (401) or cylinder (501) that serves as the power source is installed on the sliding plate (404).

3. The fatigue testing fixture for the two-wheeled electric vehicle throttle (301) as described in claim 2, characterized in that: A clamping part (402) is connected to the output shaft of the motor (401), and the clamping part (402) is elastically connected to the throttle (301) of the handlebar (3) to be tested.

4. The fatigue testing fixture for the two-wheeled electric vehicle throttle (301) as described in claim 3, characterized in that: The inner wall of the clamping part (402) is provided with an elastic point (406), which abuts against the throttle (301).

5. The fatigue testing fixture for the two-wheeled electric vehicle throttle (301) as described in claim 3, characterized in that: The clamping part (402) has a side opening (407) with a movable part that abuts against the throttle (301) passing through the hole (407).

6. The fatigue testing fixture for the two-wheeled electric vehicle throttle (301) as described in claim 1, characterized in that: The piston rod of the cylinder (501) of the pressing mechanism (5) is connected to a roller (503), and the roller (503) is pushed by the cylinder (501) to abut against the brake (302) of the handlebar (3) to be pressed.

7. The fatigue testing fixture for the two-wheeled electric vehicle throttle (301) as described in claim 6, characterized in that: A push plate (502) is provided on the piston rod of the cylinder (501), and a roller (503) is connected to the push plate (502).

8. The fatigue testing fixture for the two-wheeled electric vehicle throttle (301) as described in claim 7, characterized in that: The roller (503) is fixedly connected to the push plate (502).

9. The fatigue testing fixture for the two-wheeled electric vehicle throttle (301) as described in claim 7, characterized in that: The roller (503) is rotatably connected to the push plate (502), and the outer circular surface of the roller (503) makes rolling contact with the brake (302).

10. The fatigue testing fixture for the two-wheeled electric vehicle throttle (301) as described in claim 1, characterized in that: The handlebar (3) of the vehicle under test passes through the fixed seat (2) to achieve positioning.

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