Bicycle universal impact testing machine

Abstract

The present invention provides a universal impact tester for bicycles, comprising: a bottom plate in the tester is arranged on a bottom fixing plate, feet are installed at the four corners of the bottom fixing plate, a rear axle support frame is fixed on the bottom plate, an outer cover shell is fixed on the upper part of the bottom fixing plate, linear guide rods are fixed on the left and right sides of the inner part of the outer cover shell, impact weights, electromagnets, and lightweight rollers are fixed on the linear guide rods through linear bearings, a wire rope winch, a servo motor reducer integrated component, and an encoder driven wheel are fixed on the upper cover shell at the top of the outer cover shell, the servo motor is connected to the encoder, the wire rope winch is connected to the servo motor reducer integrated component, the wire rope on the wire rope winch bypasses the encoder driven wheel and is connected to the electromagnet from the lower wire rope release port of the upper cover shell; a touch screen is arranged on the control cabinet, the touch screen is connected to the encoder and the electromagnet, and the touch screen is connected to the test module. The universal impact tester for bicycles described in the present invention can accurately control the magnitude of the impact force, simplify the test operation, and improve the test efficiency.

Description

Technical Field

[0001] The invention belongs to the technical field related to bicycles, and in particular relates to a universal impact testing machine for bicycles. Background Art

[0002] The bicycle universal impact tester is a device used to test the performance and safety of bicycles and their components when subjected to impact. This tester can simulate various impact situations that bicycles may encounter in actual use, such as road bumps, collisions, etc., to evaluate the strength, stability and durability of the bicycle structure. Through this test, manufacturers can ensure that bicycle products meet safety standards and improve product quality and user safety.

[0003] At present, existing impact testing equipment can usually only simulate the impact of a single component, such as a frame, wheel or handlebar, and cannot be flexibly adjusted to meet the testing requirements of different components. As a result, the test machine needs to be frequently replaced when conducting impact tests on bicycles, which not only increases the time and cost of the test, but may also lead to inconsistent test results. Summary of the invention

[0004] In view of this, the present invention aims to propose a universal impact testing machine for bicycles to solve the problem that existing impact testing equipment can usually only simulate the impact of a single component, such as a frame, wheel or handlebar, and cannot be flexibly adjusted to meet the testing requirements of different components, resulting in the need to frequently replace the testing machine when conducting impact tests on bicycles, which not only increases the time and cost of the test, but may also lead to inconsistent test results.

[0005] To achieve the above object, the technical solution of the present invention is achieved as follows:

[0006] The present invention provides a universal impact testing machine for bicycles, comprising a testing machine and a control cabinet. The testing machine comprises a bottom plate, the bottom plate is arranged on a bottom fixing plate, feet are installed at four corners of the bottom fixing plate, a rear axle support frame is fixed on the bottom plate, an outer cover shell is fixed on the upper part of the bottom fixing plate, linear guide rods are fixed on the left and right sides of the inner part of the outer cover shell, impact weights, electromagnets, and light rollers are fixed on the linear guide rods through linear bearings, a wire rope winch, a servo motor reducer integrated component, and an encoder driven wheel are fixed on the upper cover shell on the top of the outer cover shell, the servo motor is connected to the encoder, and the wire rope on the wire rope winch bypasses the encoder driven wheel and is connected to the electromagnet from the wire rope lower release port of the upper cover shell. ; A touch screen is provided on the control cabinet, and the touch screen is connected to the encoder and the electromagnet. The touch screen is connected to a test module, and the test module adjusts the action of the electromagnet and the servo motor according to the input content of the touch screen, including: when the input content of the touch screen is a preset impact height, the test module controls the bicycle universal impact testing machine to complete an impact action, and completes the impact test according to the preset number of impacts; when the input content of the touch screen is a descending instruction, the test module controls the electromagnet to descend and absorb the impact weight; when the input content of the touch screen is an ascending instruction, the test module controls the electromagnet to drive the impact weight to rise, and stops the ascending action when the ascending instruction is input again.

[0007] Furthermore, an anti-collision mechanism is provided on the side of the electromagnet, and the anti-collision mechanism includes an inductive photoelectric switch, a flange, and an electromagnet. The inductive photoelectric switch is fixed on the side of the electromagnet, and the electromagnet is fixed to the bottom of the flange by a half-thread screw. There is a 5mm gap between the nut of the half-thread screw and the flange, and the upper part of the flange is connected to the pin shaft fixing seat, and the first fixing column on the pin shaft fixing seat is provided with a first pin shaft hole. The pin shaft fixing seat and the middle part of the electromagnet are hollow structures, and the left and right sides of the pin shaft fixing seat are connected to the linear guide rod through linear bearings. The electromagnet is connected to a solid-state relay, and the solid-state relay controls the electromagnet to be energized or de-energized. The electromagnet is connected to the inductive photoelectric switch and the encoder.

[0008] Furthermore, a first guide rod is fixed on the upper part of the impact weight, and the left and right sides of the first guide rod are connected to the linear guide rod through linear bearings. A second fixed column is provided in the middle of the impact weight, and an impact weight fixing pin hole is provided on the second fixed column. The shaft diameter of the fixed column is smaller than the shaft diameter of the first fixed column on the pin shaft fixing seat.

[0009] Furthermore, when the bicycle universal impact testing machine is not in the test room, the weight safety pin passes through the impact weight fixing pin hole and the first pin shaft hole to fix the impact weight.

[0010] Furthermore, the first fixed shaft passes through the middle of the lightweight roller and is fixed to the columns symmetrically arranged on the left and right. The column is provided with a first groove. Both ends of the first fixed shaft passing through the lightweight roller are slidably fixed in the first groove. The column next to the first groove has a scale, and the lightweight roller is facing the center of the impact weight.

[0011] Furthermore, when performing a frame fork impact test, the lightweight roller and the frame fork are fixed by the first fixed shaft, the rear insert of the frame is fixed on the rear axle support frame, and the rear axle support frame and the frame fork are placed on the same vertical plane.

[0012] Furthermore, when the touch screen inputs a preset impact height, the test module inputs the preset impact height into the encoder, and the encoder drives the servo motor to pull the wire rope to drive the electromagnet to descend until the induction photoelectric switch detects the first guide rod. The test module controls the solid-state relay to turn on, and after the electromagnet is energized to absorb the impact weight, the electromagnet drives the impact weight to be lifted along the linear guide rod to the preset impact height, and the touch screen prompts to confirm the impact; when the touch screen inputs confirmation of the impact, the bicycle universal impact testing machine performs an impact action. At this time, the test module controls the solid-state relay and the servo motor to turn off, the electromagnet loses power, the impact weight falls along the linear guide rod and hits the lightweight roller, and the test module determines that this bicycle universal impact testing machine has completed an impact action.

[0013] Furthermore, when the bicycle universal impact testing machine performs an impact action, the test module inputs the preset number of impacts input by the touch screen into the encoder. After each impact action is completed, the preset number of impacts is reduced by one until the preset number of impacts is zero. The test module determines that the impact test is completed.

[0014] Furthermore, when the touch screen inputs a descending command, the test module inputs the descending command into the encoder, and the encoder drives the servo motor to pull the wire rope to drive the electromagnet to descend until the induction photoelectric switch detects the first guide rod. The test module controls the solid-state relay to turn on, and the test module controls the electromagnet to be energized to absorb the impact weight.

[0015] Furthermore, when the touch screen inputs an ascending command, the test module inputs the ascending command into the encoder, and the test module controls the solid-state relay to maintain an on state, driving the servo motor to pull the wire rope to drive the electromagnet to be energized to absorb the impact weight, thereby driving the impact weight to rise, until the touch screen inputs an ascending command again, and the test module turns off the servo motor, and the servo motor stops pulling the wire rope.

[0016] Compared with the prior art, the bicycle universal impact testing machine of the present invention has the following advantages:

[0017] (1) The impact weights in the present invention are replaceable, so that the bicycle universal impact tester can be applied to the testing of different components, improve the versatility of the equipment, simplify the test operation, and improve the test efficiency. By controlling the release of the impact weights by electromagnets, the magnitude of the impact force can be accurately controlled. The release time and release speed of the electromagnets can be accurately adjusted to ensure that the impact force of each test is consistent. The release process of the electromagnets is highly controllable, which can ensure that the impact force and impact speed of each test are consistent, thereby improving the repeatability and reliability of the test results. The electromagnets can achieve rapid response, and the impact weights are quickly released to simulate the rapid impact conditions in actual use. The impact weights and the electromagnets are fixed by weight safety pins to prevent the impact weights from falling.

[0018] (2) In the present invention, the test process is displayed in real time on the touch screen. The operator can view and adjust the test parameters and progress at any time to ensure the transparency and controllability of the test process. Once an abnormal situation is detected, the operator can immediately stop the test to ensure safety while achieving high-precision adjustment of parameters to ensure that the conditions of each test are consistent. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0020] In the attached picture:

[0021] Figure 1 It is an overall front view schematic diagram of a bicycle universal impact testing machine according to an embodiment of the present invention;

[0022] Figure 2 It is an enlarged schematic diagram of the overall front view of the bicycle universal impact testing machine according to the embodiment of the present invention when the impact weight is adsorbed by the electromagnet;

[0023] Figure 3 It is an enlarged schematic diagram of the connection of the impact weight in the overall front view of the bicycle universal impact testing machine according to the embodiment of the present invention;

[0024] Figure 4 This is a schematic diagram of the axle side of the bicycle universal impact testing machine in the embodiment of the present invention;

[0025] Figure 5 A side view schematic diagram of a bicycle universal impact testing machine according to an embodiment of the present invention;

[0026] Figure 6 The figure is a schematic diagram of the internal circuit of the bicycle universal impact testing machine according to an embodiment of the present invention.

[0027] Description of reference numerals:

[0028] 1. Encoder; 2. Encoder driven wheel; 3. Wire rope winch; 4. Servo motor reducer integrated assembly; 5. Lightweight roller; 6. Column; 7. Linear bearing; 8. Outer cover; 9. Linear guide rod; 10. Impact weight; 11. Electromagnet; 12. Rear axle support frame; 13. Anchor; 14. Control cabinet; 15. Touch screen; 16. Pin fixing seat; 17. Bottom plate; 18. Impact weight fixing pin hole; 19. Inductive photoelectric switch. DETAILED DESCRIPTION

[0029] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0030] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and the like are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", and the like may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0031] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it 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 it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0032] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0033] See also Figure 1-Figure 6 As shown, Figure 1 The state when the impact weight is attracted by the electromagnet Figure 2 As shown, Figure 1 The structure of the impact weight connection is shown in the dotted line when it is not attracted by the magnet, that is, Figure 3 shown. Figure 6In the middle, L and N1 are incoming lines, 2PQ210A is an air switch, SB1 is an emergency stop, KM1 is a contactor, M is a servo motor, the servo motor is connected to the servo controller, and the servo controller is connected to the encoder.

[0034] The present embodiment provides a universal impact testing machine for a bicycle, including a testing machine and a control cabinet 14. The testing machine includes a bottom plate 17, the bottom plate 17 is arranged on a bottom fixing plate, and feet 13 are installed at the four corners of the bottom fixing plate. A rear axle support frame 12 is fixed on the bottom plate 17, an outer cover shell 8 is fixed on the upper part of the bottom fixing plate, and linear guide rods 9 are fixed on the left and right sides of the inner part of the outer cover shell 8. Impact weights 10, electromagnets 11, and lightweight rollers 5 are fixed on the linear guide rods 9 through linear bearings 7. A wire rope winch 3, a servo motor reducer integrated component 4, and an encoder driven wheel 2 are fixed on the upper cover shell on the top of the outer cover shell 8. The servo motor is connected to the encoder 1, and the wire rope winch 3 is connected to the servo motor reducer integrated component 4. The wire rope on the wire rope winch 3 bypasses the encoder driven wheel 2 and is connected to the wire rope of the upper cover shell. The lower opening is connected to the electromagnet 11; a touch screen 15 is provided on the control cabinet 14, the touch screen 15 is connected to the encoder 1 and the electromagnet 11, the touch screen 15 is connected to the test module, and the test module adjusts the action of the electromagnet 11 and the servo motor according to the input content of the touch screen 15, including: when the input content of the touch screen 15 is to input a preset impact height, the test module controls the bicycle universal impact testing machine to complete an impact action, and completes the impact test according to the preset number of impacts; when the input content of the touch screen 15 is a descending instruction, the test module controls the electromagnet 11 to descend and absorb the impact weight 10; when the input content of the touch screen 15 is an ascending instruction, the test module controls the electromagnet 11 to drive the impact weight 10 to rise, and stops the ascending action when the ascending instruction is input again.

[0035] Specifically, in this embodiment, an anti-collision mechanism is provided on the side of the electromagnet 11, and the anti-collision mechanism includes an inductive photoelectric switch 19, a flange, and an electromagnet 11. The inductive photoelectric switch 19 is fixed on the side of the electromagnet 11, and the electromagnet 11 is fixed to the bottom of the flange by a half-thread screw. There is a 5mm gap between the nut of the half-thread screw and the flange. The upper part of the flange is connected to the pin shaft fixing seat 16, and the first fixing column on the pin shaft fixing seat 16 is provided with a first pin shaft hole. The pin shaft fixing seat 16 and the middle part of the electromagnet 11 are hollow structures. The left and right sides of the pin shaft fixing seat 16 are connected to the linear guide rod 9 through a linear bearing 7. The electromagnet 11 is connected to a solid-state relay. The solid-state relay controls the electromagnet 11 to be energized or de-energized. The electromagnet 11 is connected to the inductive photoelectric switch 19 and the encoder 1.

[0036] Specifically, in this embodiment, a first guide rod is fixed on the upper part of the impact weight 10, and the left and right sides of the first guide rod are connected to the linear guide rod 9 through linear bearings 7. A second fixed column is provided in the middle of the impact weight 10, and an impact weight fixing pin hole 18 is provided on the second fixed column. The shaft diameter of the fixed column is smaller than the shaft diameter of the first fixed column on the pin shaft fixing seat 16.

[0037] Specifically, in this embodiment, when the bicycle universal impact tester is not in the test room, the weight safety pin passes through the impact weight fixing pin hole 18 and the first pin shaft hole to fix the impact weight 10.

[0038] Specifically, in this embodiment, the first fixed axis passes through the middle of the lightweight roller 5 and is fixed to the columns 6 symmetrically arranged on the left and right. A first groove is provided on the column 6. Both ends of the first fixed axis passing through the lightweight roller 5 are slidably fixed in the first groove. There are scales on the column 6 next to the first groove, and the lightweight roller 5 is facing the center of the impact weight 10.

[0039] Specifically, in this embodiment, when performing the frame front fork impact detection, the lightweight roller 5 and the frame front fork are fixed by the first fixed shaft, the rear plug of the frame is fixed on the rear axle support frame 12, and the rear axle support frame 12 and the frame front fork are in the same vertical plane.

[0040] Specifically, in this embodiment, when the touch screen 15 inputs a preset impact height, the test module inputs the preset impact height into the encoder 1, and the encoder 1 drives the servo motor to pull the wire rope to drive the electromagnet 11 to descend until the induction photoelectric switch 19 detects the first guide rod. The test module controls the solid-state relay to turn on, and after the electromagnet 11 is energized to absorb the impact weight 10, the electromagnet 11 drives the impact weight 10 to be lifted along the linear guide rod 9 to the preset impact height, and the touch screen 15 prompts to confirm the impact; when the touch screen 15 inputs confirmation of the impact, the bicycle universal impact testing machine performs an impact action. At this time, the test module controls the solid-state relay and the servo motor to turn off, the electromagnet 11 loses power, and the impact weight 10 falls along the linear guide rod 9 to hit the lightweight roller 5. The test module determines that this bicycle universal impact testing machine has completed an impact action.

[0041] Specifically, in this embodiment, when the bicycle universal impact testing machine performs an impact action, the test module inputs the preset number of impacts input by the touch screen 15 into the encoder 1. After each impact action is completed, the preset number of impacts is reduced by one until the preset number of impacts is zero. The test module determines that the impact test is completed.

[0042] Specifically, in this embodiment, when the touch screen 15 inputs a descending command, the test module inputs the descending command into the encoder 1, and the encoder 1 drives the servo motor to pull the wire rope to drive the electromagnet 11 to descend until the induction photoelectric switch 19 detects the first guide rod. The test module controls the solid-state relay to turn on, and the test module controls the electromagnet 11 to be energized to absorb the impact weight 10.

[0043] Specifically, in this embodiment, when the touch screen 15 inputs the rising command, the test module inputs the rising command into the encoder 1, and the test module controls the solid-state relay to maintain the on state, driving the servo motor to pull the wire rope to drive the electromagnet 11 to be energized to attract the impact weight 10, thereby driving the impact weight 10 to rise, until the touch screen 15 inputs the rising command again, the test module turns off the servo motor, and the servo motor stops pulling the wire rope.

[0044] In the embodiment, the lifting speed of the impact weight is adjustable from 0 to 150 mm / min, the height measurement error is ±1 mm, the weight of the hammer is 22.5 kg (the weight of the impact weight can also be changed according to actual test requirements), the accuracy of the impact weight is ±1%, the impact hardness is greater than or equal to HRC60, and the impact weight needs to be rust-proofed. It is mainly suitable for impact tests on bicycle front forks, frames, pedals, etc., which mainly simulates the ability of a bicycle to withstand ground impact when the front wheel leaves the ground during riding.

[0045] When the impact weight is 22.5kg, it is suitable for the frame and front fork assembly impact and front fork impact test. When the impact weight is 10kg and is a cylindrical weight, it is suitable for the sprocket crank impact test. When the impact weight is 8kg and is a heavy hammer weight, it is suitable for the saddle cold resistance impact. The touch screen is used to display and set parameters. There is also a power indicator and an emergency stop button on the side of the touch screen of the electric control cabinet. The power indicator is used to indicate whether the circuit is powered on. Pressing the emergency stop button is an emergency stop, and rotating (or pulling up) clockwise will reset it.

[0046] The test system software display instructions for the test module are as follows: 1. Connect the test machine and the control cabinet to the power supply, turn the emergency stop button clockwise, and the touch screen can enter the test module. Touch the "Enter" box to enter the main test screen of the test module; 2. Enter the "Test Screen" and set the impact height as needed, that is, set the impact height of the test; 3. The touch screen displays the number of tests currently being tested and the impact height of the current test. During the operation, you can see control operation boxes such as "Up", "Down", "Execute Test", and "Stop Test".

[0047] Operation process of bicycle universal impact testing machine: 1. Install the test piece to be tested in the bicycle universal impact testing machine, and read the scale d1 from the columns on both sides of the lightweight roller; 2. Turn the emergency stop button clockwise, turn on the power, and enter the test system; 3. Enter the side view screen of the test system, enter the "preset impact height", touch "execute test", and the electromagnet will automatically descend to absorb the impact weight; 4. When the set impact height is reached, the screen automatically prompts to confirm the impact, and click to confirm the impact. At this time, the impact weight falls; 5. Test multiple times, repeat the above steps 5-6, and impact again; 6. After completing the required tests, touch "down", and the magnet will automatically descend until the induction photoelectric light lights up and stop; 7. Insert the weight safety pin into the impact weight, touch "up", make the impact weight separate from the lightweight roller, and then touch "up" to stop; 8. Read the scale at the lightweight roller and record d2. At this time, the deformation can be calculated, deformation = d1-d2; 9. After the test is completed, remove the frame and determine whether the test piece is qualified according to the standard. After the test is completed, check whether the assembly has cracks and deformation, and determine whether it is qualified according to the standard.

[0048] The front fork or other parts of the bicycle are fixed on the rear axle support frame of the testing machine. The testing machine is controlled by the control cabinet according to the set test parameters, such as the height and weight of the impact weight. During the actual experimental process, the impact test is carried out according to the set parameters. At the same time, based on the recorded data, after the test is completed, it is calculated and judged whether the test piece is qualified based on the actual measurement results.

[0049] The impact weights are replaceable, making the bicycle universal impact tester suitable for testing different components, improving the versatility of the equipment, simplifying the test operation, and improving the test efficiency. The release of the impact weights can be controlled by electromagnets to accurately control the magnitude of the impact force. The release time and release speed of the electromagnets can be precisely adjusted to ensure that the impact force of each test is consistent. The release process of the electromagnets is highly controllable, which can ensure that the impact force and impact speed of each test are consistent, improving the repeatability and reliability of the test results. The electromagnets can achieve rapid response, and the impact weights are quickly released to simulate the rapid impact conditions in actual use. The impact weights and electromagnets are fixed by weight safety pins to prevent the impact weights from falling. The test process displays the test parameters and test progress in real time through the touch screen, and the operator can view and adjust them at any time to ensure the transparency and controllability of the test process. Once an abnormality is detected, the operator can stop the test immediately to ensure safety while achieving high-precision adjustment parameters to ensure consistent conditions for each test.

[0050] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A bicycle universal impact testing machine, characterized in that: The invention comprises a testing machine and a control cabinet (14), wherein the testing machine comprises a bottom plate (17), the bottom plate (17) is arranged on a bottom fixing plate, the bottom fixing plate is provided with feet (13) at four corners, a rear axle support frame (12) is fixed on the bottom plate (17), an outer cover shell (8) is fixed on the upper part of the bottom fixing plate, a linear guide rod (9) is fixed on the left and right sides of the inner part of the outer cover shell (8), an impact weight (10), an electromagnet (11), and a light roller (5) are fixed on the linear guide rod (9) through a linear bearing (7), a wire rope winch (3), a servo motor reducer integrated component (4), and an encoder driven wheel (2) are fixed on the upper cover shell at the top of the outer cover shell (8), the servo motor is connected to the encoder (1), the wire rope winch (3) is connected to the servo motor reducer integrated component (4), and the wire rope on the wire rope winch (3) passes around the encoder driven wheel (2) and is pulled out from the wire rope of the upper cover shell. The lower opening is connected to the electromagnet (11); a touch screen (15) is provided on the control cabinet (14); the touch screen (15) is connected to the encoder (1) and the electromagnet (11); the touch screen (15) is connected to a test module; the test module adjusts the action of the electromagnet (11) and the servo motor according to the input content of the touch screen (15), including: when the input content of the touch screen (15) is a preset impact height, the test module controls the bicycle universal impact tester to complete an impact action, and completes the impact test according to the preset impact number; when the input content of the touch screen (15) is a descending instruction, the test module controls the electromagnet (11) to descend and absorb the impact weight (10); when the input content of the touch screen (15) is an ascending instruction, the test module controls the electromagnet (11) to drive the impact weight (10) to ascend, and stops the ascending action when the ascending instruction is input again; An anti-collision mechanism is provided on the side of the electromagnet (11), the anti-collision mechanism comprising an inductive photoelectric switch (19), a flange, and an electromagnet (11). The inductive photoelectric switch (19) is fixed to the side of the electromagnet (11), the electromagnet (11) is fixed to the bottom of the flange by a half-thread screw, a gap of 5 mm is provided between the nut of the half-thread screw and the flange, the upper part of the flange is connected to a pin shaft fixing seat (16), a first fixing column on the pin shaft fixing seat (16) is provided with a first pin shaft hole, the pin shaft fixing seat (16) and the middle part of the electromagnet (11) are hollow structures, the left and right sides of the pin shaft fixing seat (16) are connected to a linear guide rod (9) by a linear bearing (7), the electromagnet (11) is connected to a solid-state relay, the solid-state relay controls the electromagnet (11) to be energized or de-energized, and the electromagnet (11) is connected to the inductive photoelectric switch (19) and an encoder (1).

2. The bicycle universal impact testing machine according to claim 1, characterized in that: A first guide rod is fixed to the upper part of the impact weight (10), and the left and right sides of the first guide rod are connected to the linear guide rod (9) through linear bearings (7). A second fixing column is provided in the middle of the impact weight (10), and an impact weight fixing pin hole (18) is provided on the second fixing column. The shaft diameter of the fixing column is smaller than the shaft diameter of the first fixing column on the pin fixing seat (16).

3. The bicycle universal impact testing machine according to claim 2, characterized in that: When the bicycle universal impact testing machine is not conducting a test, the weight safety pin passes through the impact weight fixing pin hole (18) and the first pin shaft hole to fix the impact weight (10).

4. The bicycle universal impact testing machine according to claim 1, characterized in that: The first fixed shaft passes through the middle of the light roller (5) and is fixed to the upright posts (6) symmetrically arranged on the left and right. The upright posts (6) are provided with first grooves. Both ends of the first fixed shaft passing through the light roller (5) are slidably fixed in the first grooves. The upright posts (6) next to the first grooves are provided with scales. The light roller (5) faces the center of the impact weight (10).

5. The bicycle universal impact testing machine according to claim 1, characterized in that: When performing a frame front fork impact test, the lightweight roller (5) and the frame front fork are fixed via the first fixed shaft, the rear insert of the frame is fixed on the rear axle support frame (12), and the rear axle support frame (12) and the frame front fork are located on the same vertical plane.

6. The bicycle universal impact testing machine according to claim 1, characterized in that: When the touch screen (15) inputs a preset impact height, the test module inputs the preset impact height into the encoder (1), and the encoder (1) drives the servo motor to pull the steel wire rope to drive the electromagnet (11) to descend until the inductive photoelectric switch (19) detects the first guide rod. The test module controls the solid-state relay to turn on, and after the electromagnet (11) is energized to attract the impact weight (10), the electromagnet (11) drives the impact weight (10) to rise along the linear guide rod (9) to the preset impact height, and the touch screen (15) prompts to confirm the impact. When the touch screen (15) inputs the confirmation of the impact, the bicycle universal impact tester performs an impact action. At this time, the test module controls the solid-state relay and the servo motor to turn off, the electromagnet (11) loses power, and the impact weight (10) falls along the linear guide rod (9) to hit the light roller (5). The test module determines that the bicycle universal impact tester has completed an impact action.

7. The bicycle universal impact testing machine according to claim 6, characterized in that: When the bicycle universal impact tester performs an impact action, the test module inputs the preset impact number input by the touch screen (15) into the encoder (1), and each time an impact action is completed, the preset impact number is reduced by one, until the preset impact number is zero, and the test module determines that the impact test is completed.

8. The bicycle universal impact testing machine according to claim 1, characterized in that: When a descending instruction is inputted through the touch screen (15), the test module inputs the descending instruction into the encoder (1), and the encoder (1) drives the servo motor to pull the steel wire rope to drive the electromagnet (11) to descend until the inductive photoelectric switch (19) detects the first guide rod. Then, the test module controls the solid-state relay to turn on, and the test module controls the electromagnet (11) to be energized to absorb the impact weight (10).

9. The bicycle universal impact testing machine according to claim 1, characterized in that: When the touch screen (15) inputs an ascending instruction, the test module inputs the ascending instruction into the encoder (1), and the test module controls the solid-state relay to maintain an on state, driving the servo motor to pull the steel wire rope to drive the electromagnet (11) to be energized to attract the impact weight (10), thereby driving the impact weight (10) to rise, until the touch screen (15) inputs an ascending instruction again, at which time the test module turns off the servo motor, and the servo motor stops pulling the steel wire rope.

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