Bicycle frame collision test device

Abstract

The utility model relates to the technical field of frame collision testing, and discloses a bicycle frame collision testing device which comprises a testing frame, a drop hammer is arranged in the testing frame, a winch is fixed on the top surface of the testing frame, and the bottom end of a traction rope of the winch is fixed with the top surface of the drop hammer. An adjusting structure used for adjusting the fixing angle of the frame is arranged in the testing frame. According to the utility model, through the arrangement of the adjusting structure, the third motor drives the screw rod to rotate and pushes the mounting plate to move, so that the rotary table is moved out of the test frame, and after the frame body is placed in the fixing groove, the first motor drives the bidirectional screw rod to rotate, so that the two clamping plates clamp the frame body, and the third motor rotates reversely to send the rotary table back into the test frame; the second motor enables the rotary table to rotate, the collision angle of the frame body is adjusted, after angle adjustment is completed, the winch is started to loosen the drop hammer, the drop hammer freely falls to impact the frame, multi-angle collision testing is achieved, testing comprehensiveness and accuracy are improved, and the testing effect is ensured.

Description

Technical Field

[0001] This utility model relates to the field of vehicle frame collision testing technology, and in particular to a bicycle frame collision testing device. Background Technology

[0002] As a green mode of transportation widely used for commuting, leisure sports, and competitive events, the structural safety of bicycles is directly related to the personal safety of riders. As the skeleton structure of the entire vehicle, the bicycle frame needs to withstand the combined effects of complex load conditions such as road bumps, sudden impacts, emergency braking, and rollovers during riding. In order to ensure that the frame will not break or deform severely under extreme conditions and to improve the durability and safety of the entire vehicle, crash performance tests are usually required during the product development and quality inspection stages.

[0003] An existing testing device for material properties under impact (publication number: CN211927571U) has at least the following drawbacks: the impact angle of the material is not adjustable after it is fixed, and it can only be subjected to vertical impact in a single direction. It is difficult to simulate the multi-angle and multi-directional collision conditions that a bicycle may encounter in actual use, thus limiting the comprehensiveness and accuracy of the test results and resulting in poor test performance. Therefore, we propose this utility model. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a bicycle frame collision testing device.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A bicycle frame collision testing device includes a test frame with a drop hammer inside. A winch is fixed to the top surface of the test frame, and the bottom end of the winch's traction rope is fixed to the top surface of the drop hammer. An adjustment structure for adjusting the frame's fixed angle is provided inside the test frame. The adjustment structure includes a mounting plate inside the test frame, a turntable rotatably mounted on one side of the mounting plate, a fixing groove on one side of the turntable, a bicycle frame body inside the fixing groove, a double-acting screw rotatably mounted inside the fixing groove, and two clamping plates slidably mounted inside the fixing groove. The positive and negative threads of the double-acting screw are threadedly connected to the two clamping plates, respectively.

[0007] As a further embodiment of this utility model, a fixing plate is fixed to one side of the test frame, and a screw is rotatably installed inside the fixing plate. The screw is threadedly connected to the mounting plate. A first motor is fixed to one side of the mounting plate, and the output end of the first motor passes through one side of the mounting plate and is fixed to one side of the turntable. A second motor is fixed inside the mounting plate, and the output end of the second motor is fixed to one end of a bidirectional lead screw. A third motor is fixed to one side of the fixing plate, and the third motor passes through one side of the fixing plate and is fixed to one end of the screw.

[0008] As a further embodiment of this utility model, a guide plate is fixed inside the test frame, a guide groove is provided on one side of the guide plate, a connecting plate is slidably arranged inside the guide groove, and the connecting plate is fixed to the drop hammer.

[0009] As a further embodiment of this utility model, the inner wall of the guide groove is provided with sliding grooves on both sides, and the connecting plate is fitted with balls on both sides, with the balls slidingly disposed within the guide groove.

[0010] As a further embodiment of this invention, the outer wall of the test frame is fixed with several protective grids.

[0011] As a further embodiment of this utility model, a number of springs are fixed to the bottom surface of the guide groove, and a buffer plate is fixed to the top of the springs.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] This testing device, through structural adjustments, uses a third motor to drive a screw to rotate, pushing a mounting plate to move the turntable out of the test frame. After the frame body is placed into the fixing slot, a first motor drives a bidirectional lead screw to rotate, clamping the frame body with two clamping plates. The third motor then reverses to return the turntable to the test frame, with the frame body positioned below the drop hammer. A second motor rotates the turntable to adjust the collision angle of the frame body. Once the angle is adjusted, a winch is activated to release the drop hammer, allowing it to fall freely and impact the frame, achieving multi-angle collision testing. This improves the comprehensiveness and accuracy of the test, ensuring optimal test results. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of a bicycle frame collision testing device proposed in this utility model;

[0015] Figure 2 This is a schematic diagram showing the disassembled structure of a bicycle frame collision testing device proposed in this utility model;

[0016] Figure 3 This is a schematic diagram of the disassembled structure of the guide plate of a bicycle frame collision testing device proposed in this utility model;

[0017] Figure 4This is a schematic diagram of the disassembled structure of the turntable of a bicycle frame collision testing device proposed in this utility model.

[0018] In the diagram: 1. Test frame; 2. Drop hammer; 201. Mounting plate; 202. Turntable; 203. Fixing groove; 204. Two-way lead screw; 205. Clamping plate; 206. Fixing plate; 207. Screw; 208. Chassis body; 3. Winch; 301. Guide plate; 302. Guide groove; 303. Connecting plate; 4. Slide groove; 401. Ball bearing; 5. Protective grille; 6. Spring; 601. Buffer plate. Detailed Implementation

[0019] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0020] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0021] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0022] Reference Figures 1-4A bicycle frame collision testing device includes a test frame 1, a drop hammer 2 inside the test frame 1, a winch 3 fixed to the top surface of the test frame 1, the bottom end of the traction rope of the winch 3 being fixed to the top surface of the drop hammer 2, and an adjustment structure inside the test frame 1 for adjusting the fixed angle of the frame. The adjustment structure includes a mounting plate 201 inside the test frame, a turntable 202 rotatably mounted on one side of the mounting plate 201, a fixing groove 203 on one side of the turntable 202, a frame body 208 inside the fixing groove 203, a bidirectional lead screw 204 rotatably mounted inside the fixing groove 203, and two clamping plates 205 slidably mounted inside the fixing groove 203. The positive and negative threads of the bidirectional lead screw 204 are threadedly connected to the two clamping plates 205 respectively.

[0023] In this embodiment, a fixing plate 206 is fixed to one side of the test frame 1. A screw 207 is rotatably installed inside the fixing plate 206. The screw 207 is threadedly connected to the mounting plate 201. A first motor is fixed to one side of the mounting plate 201. The output end of the first motor passes through one side of the mounting plate 201 and is fixed to one side of the turntable 202. A second motor is fixed inside the mounting plate 201. The output end of the second motor is fixed to one end of the bidirectional lead screw 204. A third motor is fixed to one side of the fixing plate 206. The third motor passes through one side of the fixing plate 206 and is fixed to one end of the screw 207. By adjusting the structure, the operator starts the third motor to drive the screw 207 to rotate. The screw 207 moves the fixing plate 206 through the threaded connection with the mounting plate 201, causing the turntable 202 to move out of the test frame 1. The operator then places the vehicle frame body 208 into the fixing slot. Inside 203, the first motor is started, driving the double-acting lead screw 204 to rotate. The double-acting lead screw 204 drives the two clamping plates 205 to move closer together, clamping and fixing the bottom bracket center area of ​​the frame body 208. The bottom bracket center area is one of the strongest parts of the whole vehicle, bearing the pedal force and most of the structural force of the body, making it an ideal clamping area. The third motor reverses and sends the turntable 202 into the test frame 1, so that the frame body 208 is located below the drop hammer 2. Then, the user starts the second motor to drive the turntable 202 to rotate. The turntable 202 drives the frame body 208 to rotate to adjust the collision angle. After the angle adjustment is completed, the winch 3 is started to release the traction on the drop hammer 2. The drop hammer 2 falls freely to the frame body 208 for collision testing. This allows the staff to conduct multi-angle collision tests on the frame body 208, improving the comprehensiveness and accuracy of the test and ensuring the test effect of the device.

[0024] In this embodiment, a guide plate 301 is fixed inside the test frame 1. A guide groove 302 is provided on one side of the guide plate 301. A connecting plate 303 is slidably arranged inside the guide groove 302. The connecting plate 303 is fixed to the drop hammer 2. When the drop hammer 2 is lifted and lowered under the traction of the winch 3, the connecting plate 303 slides in the guide groove 302 to guide the lifting and lowering of the drop hammer 2.

[0025] In this embodiment, sliding grooves 4 are provided on both sides of the inner wall of the guide groove 302, and ball bearings 401 are embedded on both sides of the connecting plate 303. The ball bearings 401 are slidably disposed in the guide groove 302. When the connecting plate 303 slides in the guide groove 302, the ball bearings 401 slide in the sliding groove 4, reducing the sliding resistance of the connecting plate 303 and avoiding affecting the lifting and lowering of the drop hammer 2.

[0026] In this embodiment, a number of protective grids 5 are fixed on the outer wall of the test frame 1, which can improve the safety of the test.

[0027] In this embodiment, a number of springs 6 are fixed on the inner bottom surface of the guide groove 302, and a buffer plate 601 is fixed on the top of the springs 6. When the drop hammer 2 falls and collides, the connecting plate 303 contacts the buffer plate 601, and the springs 6 are compressed to buffer the drop hammer 2, so as to prevent the drop hammer 2 from directly hitting the bottom of the test frame 1 after colliding with the frame body 208.

[0028] Working principle: During use, the operator starts the third motor to drive the screw 207 to rotate. The screw 207, through its threaded connection with the mounting plate 201, moves the mounting plate 201, causing the turntable 202 to move out of the test frame 1. The operator then places the frame body 208 into the fixing slot 203. The operator starts the first motor to drive the double-acting screw 204 to rotate. The double-acting screw 204 drives the two clamping plates 205 to move closer together, clamping and fixing the frame body 208. The third motor reverses to send the turntable 202 into the test frame 1, positioning the frame body 208 below the drop hammer 2. Then, the user starts the second motor to drive the turntable 202 to rotate. The turntable 202 rotates the frame body 208 to adjust the collision angle. After the angle adjustment is completed, the winch 3 is started. The traction on the drop hammer 2 is released, and the drop hammer 2 falls freely to conduct a collision test on the frame body 208, which facilitates the staff to conduct multi-angle collision tests on the frame body 208. When the drop hammer 2 is raised and lowered under the traction of the winch 3, the connecting plate 303 slides in the guide groove 302 to guide the raising and lowering of the drop hammer 2. When the connecting plate 303 slides in the guide groove 302, the ball 401 slides in the slide groove 4 to reduce the sliding resistance of the connecting plate 303 and avoid affecting the raising and lowering of the drop hammer 2. The protective grille 5 can improve the safety of the test. When the drop hammer 2 falls and collides, the connecting plate 303 contacts the buffer plate 601, and the spring 6 is compressed to buffer the drop hammer 2, so as to prevent the drop hammer 2 from directly hitting the bottom of the test frame 1 after colliding with the frame body 208.

[0029] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A bicycle frame collision testing device, comprising a test frame (1), characterized in that: The test frame (1) is equipped with a drop hammer (2) inside. A winch (3) is fixed on the top surface of the test frame (1). The bottom end of the traction rope of the winch (3) is fixed to the top surface of the drop hammer (2). The test frame (1) is equipped with an adjustment structure for adjusting the fixed angle of the frame. The adjustment structure includes a mounting plate (201) inside the test frame. A turntable (202) is rotatably arranged on one side of the mounting plate (201). A fixing groove (203) is opened on one side of the turntable (202). The frame body (208) is arranged inside the fixing groove (203). A two-way screw (204) is rotatably arranged inside the fixing groove (203). Two clamps (205) are slidably arranged inside the fixing groove (203). The positive and negative threads of the two-way screw (204) are threadedly connected to the two clamps (205) respectively.

2. The bicycle frame collision testing device according to claim 1, characterized in that, A fixing plate (206) is fixed on one side of the test frame (1). A screw (207) is rotatably installed inside the fixing plate (206). The screw (207) is threadedly connected to the mounting plate (201). A first motor is fixed on one side of the mounting plate (201). The output end of the first motor passes through one side of the mounting plate (201) and is fixed to one side of the turntable (202). A second motor is fixed inside the mounting plate (201). The output end of the second motor is fixed to one end of the bidirectional lead screw (204). A third motor is fixed on one side of the fixing plate (206). The third motor passes through one side of the fixing plate (206) and is fixed to one end of the screw (207).

3. The bicycle frame collision testing device according to claim 2, characterized in that, The test frame (1) has a guide plate (301) fixed inside. A guide groove (302) is provided on one side of the guide plate (301). A connecting plate (303) is slidably arranged inside the guide groove (302). The connecting plate (303) is fixed to the drop hammer (2).

4. The bicycle frame collision testing device according to claim 3, characterized in that, The inner wall of the guide groove (302) is provided with sliding grooves (4) on both sides, and the connecting plate (303) is fitted with balls (401) on both sides. The balls (401) are slidably disposed in the guide groove (302).

5. A bicycle frame collision testing device according to claim 4, characterized in that, The outer wall of the test frame (1) is fixed with several protective grids (5).

6. The bicycle frame collision testing device according to claim 5, characterized in that, Several springs (6) are fixed to the bottom surface of the guide groove (302), and a buffer plate (601) is fixed to the top of the several springs (6).

Images