Flying slope fatigue test tool for motorcycle frame

Abstract

The utility model discloses a flying slope fatigue test tool for a motorcycle frame, which comprises a base (1), an inclined slope (2) is arranged on the upper end face of the base (1), a simulation engine (3) is obliquely arranged on the inclined slope (2), and a replaceable support used for being connected with the motorcycle frame (4) is arranged on the simulation engine (3). The tool further comprises an independent simulation front suspension used for being connected with a motorcycle frame. The device has the advantages of being simple in structure, reliable to use and convenient to operate, can stably, efficiently and accurately verify the flying slope fatigue performance of the frame, greatly reduces the research and development cost and the human resource cost, and greatly shortens the research and development period at the same time; and a stable and reliable frame is powerfully provided for the whole motorcycle.

Description

Technical Field

[0001] This utility model relates to a fatigue testing fixture, and more particularly to a fly slope fatigue testing fixture for motorcycle frames. Background Technology

[0002] Currently, existing motorcycle testing programs all consider the fatigue strength of the frame under normal operating conditions. However, with increasingly stringent usage scenarios and lightweight design requirements, testing the frame's performance under specific road loads is an indispensable and crucial step. Once a frame is designed or modified, long-term, targeted riding tests must be conducted to ensure its reliability and stability. Especially under extreme conditions such as motorcycle jumps and ramps, the loads on the frame are complex and variable, making the corresponding testing and verification work more challenging and difficult. This process requires significant investment in R&D and human resources, and significantly extends the entire R&D and testing cycle. These investments and efforts are essential for optimizing and improving the motorcycle frame and achieving a high-quality final product. To reduce R&D and human resource costs and shorten the R&D and testing cycle, motorcycle R&D institutions often use motorcycle frame fatigue testing equipment to test the frame.

[0003] Chinese patent CN100424491C discloses an invention patent entitled "Motorcycle Frame Fatigue Testing Rig," which includes a base and a column. Its key components are a vertical loading component mounted on the column; a support component mounted on the base below the column; a horizontal loading component mounted on the base; a hub board connected to various cables and transmitting collected and processed signals to an industrial control computer; an industrial control computer that processes signals from various sensors to control the entire system; and a display showing the overall operating status of the equipment. It can select different vertical loading and support positions according to different frames and testing methods; set the magnitude of the horizontal or vertical loading force; the maximum deformation value; and the number of cycles. Then, a test can be performed on a specific location of a frame. Based on the test results, the frame structure and manufacturing process can be fully analyzed, and the frame structure design can be optimized using the analysis results. Although this device can perform fatigue tests on motorcycle frames, the test rig has a complex structure, high manufacturing costs, and is also relatively complicated to operate.

[0004] CN201464190U discloses a utility model patent entitled "A Motorcycle Frame Fatigue Testing Device," which includes two vertically arranged actuators, a front bracket and a rear bracket respectively mounted above the actuators. A front axle pin is hinged to the front bracket, and a rear support member is hinged to the rear bracket. The front axle pin can be sleeved with the front end sleeve of the motorcycle frame, and the rear support member can be hinged to the rear end of the motorcycle frame. It also includes two vertically arranged support columns on both sides of the motorcycle frame, each with several rubber bands connected to and taut with the motorcycle frame. Finally, it includes a loading basket mounted on the motorcycle frame. While it can perform durability tests and life predictions on motorcycle frames, it cannot perform ramp fatigue tests on motorcycle frames, which is a significant limitation.

[0005] Chinese patent application CN114593921A discloses an invention patent entitled "A Motorcycle Frame Fatigue Testing Device," which includes a main body of the testing device, a frame placement platform, snap-fit ​​posts, and an inner reinforcement frame. The frame placement platform is located on the top of the main body of the testing device, and snap-fit ​​posts are inserted into the inner side of the frame placement platform. An inner reinforcement frame is located inside the main body of the testing device, and load-bearing support posts are provided on the surface of the frame placement platform to improve its load-bearing capacity. Although it can perform fatigue tests on frames of different sizes, this structure still lacks the function of performing flyback fatigue tests, thus having limitations. Utility Model Content

[0006] The purpose of this invention is to provide a fly slope fatigue testing fixture for motorcycle frames.

[0007] The purpose of this utility model is achieved through the following technical solution: a fly slope fatigue test fixture for a motorcycle frame, the fixture including a base, an inclined surface provided on the upper end face of the base, a simulated engine inclinedly provided on the inclined surface, and a replaceable bracket for connecting to the motorcycle frame provided on the simulated engine; the fixture also includes an independent simulated front suspension for connecting to the motorcycle frame.

[0008] The replaceable bracket includes bracket group A, bracket group B and bracket group C. Bracket group A and bracket group B are arranged side by side at the front of the upper end face of the simulated engine, and bracket group C is arranged at the rear of the upper end face of the simulated engine and perpendicular to bracket group A and bracket group B.

[0009] Further description: the support group A includes symmetrically arranged support A and support B; the support group B includes symmetrically arranged support C and support D; one end of support A, support B, support C and support D is connected to the simulated engine by bolts; the other end of support A, support B, support C and support D extends out of the simulated engine.

[0010] To ensure a more secure connection with the chassis, a flat fork shaft that runs through the simulated engine is provided at the rear of the simulated engine and below the support group C.

[0011] In this invention, the simulated front suspension includes a riser A and a riser B arranged in parallel. A connecting device for connecting to a motorcycle frame is provided in the middle of the riser A and the riser B. A load-bearing bracket for connecting the riser A and the riser B is provided at the same end of the riser A and the riser B.

[0012] Further description: The connecting device includes an upper connecting plate and a lower connecting plate symmetrically arranged on riser A and riser B. A connecting rod is provided in the middle of the upper connecting plate and the lower connecting plate, with its two ends passing through the upper connecting plate and the lower connecting plate respectively. A locking nut is provided at the protruding end of each connecting rod.

[0013] Due to the adoption of the above technical solution, this utility model has the advantages of simple structure, reliable use and convenient operation. It can stably, efficiently and accurately verify the fatigue performance of the frame during ramps, greatly reduce R&D costs and human resource costs, and also greatly shorten the R&D cycle; it effectively ensures that a stable and reliable frame is provided for the whole motorcycle. Attached Figure Description

[0014] The accompanying drawings of this utility model are described below:

[0015] Figure 1 This is a schematic diagram of the base and simulated engine structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the simulated front suspension structure of this utility model;

[0017] Figure 3 This is a reference diagram showing the usage state of this utility model. Detailed Implementation

[0018] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings. However, this utility model is not limited to these embodiments. Any improvements or substitutions based on the basic spirit of these embodiments shall still fall within the scope of protection claimed by the claims of this utility model.

[0019] Example 1: As Figure 1 , 2 As shown in Figure 3, a fly slope fatigue test fixture for a motorcycle frame includes a base 1, an inclined surface 2 on the upper surface of the base 1, a simulated engine 3 inclinedly arranged on the inclined surface 2, and a replaceable bracket for connecting to a motorcycle frame 4 on the simulated engine 3; the fixture also includes an independent simulated front suspension for connecting to the motorcycle frame 4.

[0020] The replaceable bracket includes bracket group A, bracket group B and bracket group C18. Bracket group A and bracket group B are arranged side by side at the front of the upper end face of the simulated engine 3, and bracket group C18 is arranged at the rear of the upper end face of the simulated engine 3 and perpendicular to bracket group A and bracket group B.

[0021] Further description: Support group A includes symmetrically arranged supports A6 and B7; support group B includes symmetrically arranged supports C8 and D9. One end of supports A6, B7, C8, and D9 is connected to the simulated engine 3 by bolts; the other end of supports A6, B7, C8, and D9 extends out of the simulated engine 3. A flat fork shaft 17 penetrating the simulated engine 3 is provided at the rear of the simulated engine 3 and below support group C18.

[0022] In this invention, the middle part of the motorcycle frame 4 is connected to the simulated engine 3 via bracket A6, bracket B7, support C8, bracket D9, and flat fork shaft 17.

[0023] like Figure 2 As shown, in this utility model, the simulated front suspension includes a riser A10 and a riser B11 arranged in parallel. A connecting device for connecting to the motorcycle frame 4 is provided in the middle of the riser A10 and the riser B11. A load-loading bracket 12 for connecting the riser A10 and the riser B11 is provided at the same end of the riser A10 and the riser B11.

[0024] The connecting device includes an upper connecting plate 13 and a lower connecting plate 14 symmetrically arranged on riser A10 and riser B11. A connecting rod 15 is provided in the middle of the upper connecting plate 13 and the lower connecting plate 14, with both ends passing through the upper connecting plate 13 and the lower connecting plate 14 respectively. A locking nut 16 is provided at the protruding end of the connecting rod 15.

[0025] In this invention, the connecting rod 15 is passed through the steering column of the motorcycle frame 4, and then the locking nut 16 is tightened to connect the simulated front suspension to the front of the motorcycle frame 4.

[0026] After connecting the motorcycle frame 4 to this fixture, it is fixed to the fatigue testing equipment via the base 1. A load is then applied by the load-loading bracket to verify the frame's flyby fatigue performance.

Claims

1. A jig for fly slope fatigue testing of motorcycle frames, characterized in that: The tooling includes a base (1), an inclined surface (2) is provided on the upper surface of the base (1), a simulated engine (3) is inclinedly provided on the inclined surface (2), and a replaceable bracket for connecting to a motorcycle frame (4) is provided on the simulated engine (3); the tooling also includes an independent simulated front suspension for connecting to the motorcycle frame.

2. The fly-up fatigue testing fixture for motorcycle frames as described in claim 1, characterized in that: The replaceable bracket includes bracket group A, bracket group B and bracket group C (18). Bracket group A and bracket group B are arranged side by side at the front of the upper end face of the simulated engine (3), and bracket group C (18) is arranged at the rear of the upper end face of the simulated engine (3) and perpendicular to bracket group A and bracket group B.

3. The fly-up fatigue testing fixture for motorcycle frames as described in claim 2, characterized in that: The support group A includes symmetrically arranged support A (6) and support B (7), and the support group B includes symmetrically arranged support C (8) and support D (9). One end of the support A (6), support B (7), support C (8) and support D (9) is connected to the simulated engine (3) by bolts; the other end of the support A (6), support B (7), support C (8) and support D (9) extends out of the simulated engine (3).

4. The fly-up fatigue testing fixture for motorcycle frames as described in claim 3, characterized in that: in A flat fork shaft (17) is provided at the rear of the simulated engine (3) and below the support group C (18).

5. The fly-up fatigue testing fixture for motorcycle frames as described in claim 1, 2, 3, or 4, characterized in that: The simulated front suspension includes a riser A (10) and a riser B (11) arranged in parallel. A connecting device for connecting to the motorcycle frame (4) is provided in the middle of the riser A (10) and the riser B (11). A load-loading bracket (12) connecting the riser A (10) and the riser B (11) is provided at the same end of the riser A (10) and the riser B (11).

6. The fly-up fatigue testing fixture for motorcycle frames as described in claim 5, characterized in that: The connecting device includes an upper connecting plate (13) and a lower connecting plate (14) symmetrically arranged on riser A (10) and riser B (11). A connecting rod (15) with both ends passing through the upper connecting plate (13) and the lower connecting plate (14) respectively is provided in the middle of the upper connecting plate (13) and the lower connecting plate (14). A locking nut (16) is provided at the protruding end of the connecting rod (15).

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