Fatigue testing device for front fork of electric vehicle

Abstract

The utility model relates to a fatigue testing device for an electric vehicle front fork, which belongs to the field of electric vehicle front forks, and comprises a load assembly arranged on the upper surface of a testing device main body and used for applying a pressure load to the front fork, the load assembly comprises a rack, a transverse plate and a pressure applying cylinder, the rack is arranged on the upper surface of the testing device main body, and the transverse plate is arranged on the rack. And the transverse plate is connected with the interior of the rack. According to the fatigue test device for the front fork of the electric vehicle, accurate pressure load is applied to the front fork through the load assembly, so that the accuracy and reliability of test data are improved, and possible load and environmental conditions of the front fork in the actual use process can be accurately simulated; according to the invention, the fatigue test can be rapidly carried out, the complexity and time consumption of manual operation are reduced, the accurate simulation and efficient test of the front fork under the actual use condition are realized, and the accuracy and reliability of the test are obviously improved.

Description

Technical Field

[0001] The utility model relates to the technical field of electric vehicle front forks, in particular to a fatigue testing device for electric vehicle front forks. Background Art

[0002] The front fork of an electric vehicle is one of the important components of an electric vehicle. It connects the handlebars and the front wheel and plays the role of support, shock absorption and steering. During its production, fatigue testing will be carried out to simulate the various loads and environmental conditions that the front fork may encounter during actual use, so as to evaluate its durability and reliability.

[0003] When an electric vehicle front fork is fatigue tested without effective pressure being applied to the fork, the accuracy of the fatigue test data of the electric vehicle front fork may be affected. This is because when impact force is frequently applied to the fork without a pressure load, the load and environmental conditions that the fork may encounter during actual use cannot be simulated, resulting in inaccurate fatigue test results. Therefore, a fatigue testing device for an electric vehicle front fork is proposed to solve the above problem. Utility Model Content

[0004] In response to the shortcomings of the existing technology, the utility model provides a fatigue testing device for the front fork of an electric vehicle, which has the advantages of being easy to apply test pressure. It solves the problem that when a single pair of front forks frequently apply impact force but the front forks lack pressure load, it is impossible to simulate the loads and environmental conditions that the front forks may encounter during actual use, resulting in inaccurate fatigue test results.

[0005] To achieve the above-mentioned object, the present utility model provides the following technical solution: a fatigue testing device for a front fork of an electric vehicle, comprising a load assembly provided on an upper surface of a main body of the testing device, for applying a pressure load to the front fork;

[0006] The load assembly includes a frame, a cross plate, and a pressure cylinder. The frame is arranged on the upper surface of the test device body, and the cross plate is connected to the inside of the frame. The pressure cylinder is vertically arranged on the upper surface of the cross plate to apply load pressure to the front fork component. A connecting plate is provided on the outer side of the output shaft of the pressure cylinder. A front fork mounting seat is fixed in the middle of the lower surface of the connecting plate to connect the front fork component to the connecting plate.

[0007] The load assembly also includes support plates arranged on the left and right sides of the lower surface of the cross plate, and an axle is arranged between the opposite sides of the two support plates. A test wheel is arranged on the outside of the axle to serve as a front fork test contact component. A front fork body is arranged inside the front fork mounting seat, and the bottom of the front fork body is connected to the axle.

[0008] Furthermore, sliding openings are provided on opposite sides of the two support plates, and the two ends of the axle are respectively slidably arranged inside the two sliding openings.

[0009] Furthermore, the outer surface of the axle and the left and right sides of the sliding opening are provided with limiting plates to prevent the axle from falling off.

[0010] Furthermore, slide rails are fixed to the left and right inner walls of the frame, and slide grooves are provided on the left and right sides of the connecting plate, and the connecting plate is slidably connected to the outer sides of the two slide rails through the two slide grooves to enable the connecting plate to move vertically linearly.

[0011] Furthermore, a mounting hole for inserting the front fork body is provided on the lower surface of the front fork mounting seat, and the diameter of the mounting hole is equal to the diameter of the front fork body.

[0012] Compared with the existing technology, the technical solution of this application has the following beneficial effects:

[0013] This fatigue testing device for electric vehicle front forks applies precise pressure loads to the front forks through a load assembly, thereby improving the accuracy and reliability of test data. It can accurately simulate the loads and environmental conditions that the front forks may encounter during actual use, including applying periodic load pressure and simulating the interaction between the wheel and the front fork. It can quickly perform fatigue tests, reducing the tedious and time-consuming manual operations, achieving precise simulation and efficient testing of the front fork under actual use conditions, and significantly improving the accuracy and reliability of the test. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the load assembly of the utility model;

[0016] Figure 3 It is a partial schematic diagram of the load component of the present invention.

[0017] In the figure: 1. Test device body; 2. Load assembly; 21. Frame; 22. Cross plate; 23. Pressure cylinder; 24. Connecting plate; 25. Front fork mounting seat; 26. Support plate; 27. Axle; 28. Test wheel; 29. Front fork body. DETAILED DESCRIPTION

[0018] 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 embodiments described 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 making creative efforts are within the scope of protection of the present invention.

[0019] Example 1: Please refer to Figures 1 to 3 In this embodiment, a fatigue testing device for an electric vehicle front fork includes a load assembly 2 disposed on the upper surface of a testing device body 1 for applying a pressure load to the front fork.

[0020] Example 2: Please refer to Figures 2 to 3 , on the basis of embodiment 1, in order to..., the load assembly 2 in this embodiment includes a frame 21, a cross plate 22 and a pressure cylinder 23. The frame 21 is arranged on the upper surface of the test device body 1, and the cross plate 22 is connected to the inside of the frame 21. The pressure cylinder 23 is vertically arranged on the upper surface of the cross plate 22 to apply load pressure to the front fork component. The initial pressure load is applied by the pressure cylinder 23. A connecting plate 24 is provided on the outer side of the output shaft of the pressure cylinder 23. A front fork mounting seat 25 is fixed in the middle of the lower surface of the connecting plate 24 to connect the front fork component and the connecting plate 24.

[0021] The load assembly 2 also includes support plates 26 arranged on the left and right sides of the lower surface of the cross plate 22, and an axle 27 is arranged between the opposite sides of the two support plates 26, and a test wheel 28 is arranged on the outside of the axle 27 to serve as a front fork test contact component. The position of the test wheel 28 is adjusted so that it contacts the front fork component correctly to simulate the front wheel in actual use. A front fork body 29 is provided inside the front fork mounting seat 25, and the bottom of the front fork body 29 is connected to the axle 27. The front fork component of the electric vehicle is installed on the front fork mounting seat 25, ensuring that the front fork body 29 is inserted into the mounting hole and connected to the axle 27, ensuring that the front fork component is correctly connected to the connecting plate 24.

[0022] It should be noted that, according to the test requirements, the parameters such as the pressure, loading frequency and loading cycle of the pressure cylinder 23 are set, and the pressure cylinder 23 is started to start applying periodic load pressure to the front fork component.

[0023] In this embodiment, sliding openings are opened on the opposite sides of the two support plates 26, and the two ends of the axle 27 are respectively slidably arranged inside the two sliding openings. The outer surface of the axle 27 and the left and right sides of the sliding openings are provided with limit plates to prevent the axle 27 from falling off.

[0024] In this embodiment, slide rails are fixed to the left and right inner walls of the frame 21, slide grooves are provided on the left and right sides of the connecting plate 24, and the connecting plate 24 is slidably connected to the outer sides of the two slide rails through the two slide grooves, so as to enable the connecting plate 24 to move vertically linearly. The lower surface of the front fork mounting seat 25 is provided with a mounting hole for inserting the front fork body 29, and the aperture of the mounting hole is equal to the diameter of the front fork body 29. The test wheel 28 interacts with the front fork body 29 to simulate the load and environmental conditions during actual driving.

[0025] It should be noted that the connecting plate 24 realizes vertical linear motion through the slide rail and slide groove structure to simulate the dynamic response of the front fork in actual use. The test is stopped when a predetermined test cycle is reached or fatigue damage of the front fork components is detected.

[0026] The working principle of the above embodiment is:

[0027] Install the front fork component of the electric vehicle onto the front fork mounting seat 25, ensure that the front fork body 29 is inserted into the mounting hole and connected to the axle 27, ensure that the front fork component is correctly connected to the connecting plate 24, and apply an initial pressure load through the pressure cylinder 23, adjust the position of the test wheel 28 so that it is in correct contact with the front fork component to simulate the front wheel in actual use, and set the pressure, loading frequency and loading cycle and other parameters of the pressure cylinder 23 according to the test requirements, start the pressure cylinder 23, and start applying periodic load pressure to the front fork component. The test wheel 28 interacts with the front fork body 29 to simulate the load and environmental conditions during actual driving. The connecting plate 24 realizes vertical linear movement through the slide rail and slide groove structure to simulate the dynamic response of the front fork in actual use. The test is stopped when the predetermined test cycle is reached or fatigue damage of the front fork component is detected.

[0028] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply the existence of any such actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or device comprising the element.

[0029] If this patent discloses or involves components or structural parts that are fixedly connected to each other, then, unless otherwise stated, the fixed connection can be understood as: a detachable fixed connection (for example, connection using bolts or screws), or as: a non-detachable fixed connection (for example, riveting, welding). Of course, the mutual fixed connection can also be replaced by an integrated structure (for example, manufactured by one-piece molding using a casting process) (except where it is obviously impossible to use an integrated molding process).

[0030] Although the 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 these embodiments without departing from the principles and spirit of the present invention.

Claims

1. A fatigue testing device for an electric vehicle front fork, characterized in that: It comprises a load assembly (2) arranged on the upper surface of a test device body (1) and used for applying a pressure load to a front fork; The load assembly (2) includes a frame (21), a transverse plate (22) and a pressure cylinder (23), wherein the frame (21) is arranged on the upper surface of the test device body (1), and the transverse plate (22) is connected to the inside of the frame (21), and the pressure cylinder (23) is vertically arranged on the upper surface of the transverse plate (22) for applying load pressure to the front fork component, and a connecting plate (24) is provided on the outer side of the output shaft of the pressure cylinder (23), and a front fork mounting seat (25) is fixed to the middle part of the lower surface of the connecting plate (24) for connecting the front fork component and the connecting plate (24); The load assembly (2) further includes support plates (26) arranged on the left and right sides of the lower surface of the transverse plate (22), and an axle (27) is arranged between the two opposite sides of the support plates (26). A test wheel (28) is arranged on the outer side of the axle (27) to serve as a front fork test contact component. A front fork body (29) is arranged inside the front fork mounting seat (25), and the bottom of the front fork body (29) is connected to the axle (27).

2. A fatigue testing device for an electric vehicle front fork according to claim 1, characterized in that: Sliding openings are provided on opposite sides of the two support plates (26), and both ends of the axle (27) are slidably arranged inside the two sliding openings.

3. The fatigue testing device for an electric vehicle front fork according to claim 2, characterized in that: The outer surface of the axle (27) and the left and right sides of the sliding opening are both provided with limiting pieces for preventing the axle (27) from falling off.

4. The fatigue testing device for an electric vehicle front fork according to claim 1, characterized in that: Slide rails are fixed to the inner walls on both sides of the frame (21), and slide grooves are provided on both sides of the connecting plate (24), and the connecting plate (24) is slidably connected to the outer sides of the two slide rails through the two slide grooves, so as to enable the connecting plate (24) to move vertically linearly.

5. The fatigue testing device for an electric vehicle front fork according to claim 1, characterized in that: The lower surface of the front fork mounting seat (25) is provided with a mounting hole for inserting the front fork body (29), and the diameter of the mounting hole is equal to the diameter of the front fork body (29).

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