Bicycle with damping front fork folder

Abstract

The invention relates to the technical field of bicycle dynamic balance testing, and discloses a bicycle with a damping front fork folder, which comprises a test board, two groups of placing plates are arranged on the surface of the test board, and the two groups of placing plates respectively correspond to a front wheel and a rear wheel of a bicycle frame. According to the bicycle with the damping front fork folder, through the design of the front supporting wheels and the rear supporting wheels in the two sets of placing plates on the surface of the testing table, dynamic rotary platform testing of the bicycle can be achieved, and the bicycle can be folded conveniently and rapidly. The space length needed by dynamic rotation of the bicycle is small, meanwhile, through the combined design of the multiple sets of adjusting rods and the front supporting wheel, slopes of different shapes can be simulated, so that road hindrance generated when the bicycle runs is simulated, and then the damping effect of a damping front fork of the bicycle can be simulated.

Description

Technical Field

[0001] This invention relates to the field of bicycle dynamic balance testing technology, specifically to a bicycle with a shock-absorbing front fork folding mechanism. Background Technology

[0002] A bicycle is a two-wheeled means of transportation. It mainly consists of a frame and front and rear wheels. To improve the riding comfort of a bicycle, a shock-absorbing front fork structure is added at the connection between the bicycle frame and the front wheel. When the bicycle is in motion, the shock-absorbing front fork can absorb shocks. For easy storage or carrying, a folding mechanism can be installed in the bicycle frame. The design of the folding mechanism allows the bicycle to be folded forward and backward.

[0003] After the design of a bicycle with a shock-absorbing front fork folding mechanism is completed, the first batch of vehicles needs to undergo dynamic balance testing, including dynamic rotational balance testing of the front and rear wheels during riding, shock absorption testing of the shock-absorbing front fork, and folding testing of the bicycle. A published patent document, "Testing Platform for Electric Bicycles" (publication number: CN114279721A), discloses a testing platform for electric bicycles, comprising: a stabilizing mechanism, with guide mechanisms connected to the central positions of the lower parts of both sides of the stabilizing mechanism, and a testing mechanism connected to the central position of the upper surface of the stabilizing mechanism; and an auxiliary testing mechanism, comprising a set of symmetrical guide grooves on both sides of the upper middle part of the testing mechanism, with guide blocks slidably connected within the guide grooves, and a ramp connected to the central position of the upper surface of the guide blocks. This technical solution involves setting up an auxiliary testing mechanism on the testing platform to simulate a sloping road surface for hill-climbing testing of the vehicle.

[0004] The road slope simulation in the above technical solution requires a long simulation space. The technical solution in the above-mentioned public documents is difficult to actually simulate and test the dynamic driving of vehicles. Vehicle road slope driving test is difficult to realize. At the same time, the existing bicycle dynamic balance test platform can only test a single item. Multiple test platforms are needed to test the dynamic balance, shock absorption and folding of bicycles. The transfer of bicycles between various test platforms will affect the efficiency of bicycle test. Summary of the Invention

[0005] To address the limitations of existing technologies in simulating vehicle dynamics, particularly in testing vehicle performance on road surfaces and slopes, and the fact that current bicycle dynamic balance testing platforms only test single aspects (requiring multiple platforms to test dynamic balance, shock absorption, and folding), and that transferring the bicycle between platforms negatively impacts testing efficiency, this invention provides the following solution: A bicycle with a shock-absorbing front fork folding mechanism, comprising a testing platform. The testing platform has two sets of placement plates on its surface, corresponding to the front and rear wheels of the bicycle frame for positioning. The surface of the testing platform also features arc-shaped grooves. The testing platform further includes: A plurality of front support wheels are distributed inside the placement plate corresponding to the front wheels of the vehicle frame. The support shafts of the front support wheels are slidably mounted on the inner surface of the placement plate, and the front support wheels are rotatably mounted on the surface of the support shafts. An adjustment rod for adjusting the height of the front support wheels is installed inside the test bench. The adjustment rod is a hydraulic adjustment rod. The height of the front support wheels at different positions can be adjusted by using the adjustment rod, thereby simulating the formation of slopes of different shapes. A plurality of rear support wheels are rotatably mounted inside the placement plate corresponding to the rear wheels of the frame for supporting the rear wheels of the frame. The support plate includes a front support plate and a rear support plate. Two sets of placement plates are respectively installed in the front support plate and the rear support plate. The support plate is slidably installed in the groove on the surface of the test bench. When the front support plate and the rear support plate slide in the groove, the frame can be folded through the placement plate. The front and rear frames of the frame will rotate and fold along the folding device.

[0006] Furthermore, several of the aforementioned front support wheels are distributed on the front and rear tire treads of the lower surface of the front wheel of the frame. By adjusting the height of the front support wheels, rotational resistance can be formed on the lower surface of the front wheel of the frame, thereby simulating the formation of a slope. Several rear support wheels are distributed on the front and rear tire treads of the lower surface of the rear wheel of the frame. The rear support wheels are arranged in an arc shape and are in contact with the rear tire tread of the frame. When the rear wheel of the frame rotates, it will drive the rear support wheels to rotate, thereby using the rear support wheels to provide dynamic support for the rear wheel of the frame.

[0007] Furthermore, the test bench is equipped with a rotating base inside, and the front support plate and the rear support plate are rotatably mounted on the surface of the rotating base through connectors. The test bench is equipped with a drive mechanism for driving the two sets of connectors to rotate.

[0008] Furthermore, the drive mechanism includes: A hydraulic rod is installed inside the test bench, and a U-shaped toothed rod is installed at the telescopic end of the hydraulic rod; Two sets of adjusting gears are rotatably mounted on the surface of the rotating base. The two sets of adjusting gears are fixedly connected to the two sets of connecting parts respectively, and the two sets of adjusting gears mesh with the tooth surfaces on both sides inside the rack.

[0009] The movement of the rack is controlled by a hydraulic rod. The toothed surfaces on both sides of the rack mesh with two sets of adjusting gears, which will cause the front support plate and the rear support plate to rotate in opposite directions, thus enabling the bicycle frame to be folded for testing.

[0010] Furthermore, a support plate is slidably mounted on the surface of the test bench, and a first rotating wheel and a second rotating wheel are rotatably mounted on the surface of the support plate near the frame. The first rotating wheel and the second rotating wheel are connected by a timing belt or chain, and a motor device for driving the first rotating wheel to rotate is mounted on the surface of the support plate. The first rotating wheel is designed to be coaxial with the drive gear of the frame, and the second rotating wheel is designed to be coaxial with the front wheel of the frame. The central shaft of the first rotating wheel is provided with a mating hole that matches the shaft of the frame drive gear, and the central shaft of the second rotating wheel is provided with a mating hole that matches the shaft of the front wheel of the frame.

[0011] The first wheel is driven to rotate by an electric motor. The first wheel will drive the drive sprocket of the frame and the second wheel to rotate together. The drive sprocket drives the rear wheel of the frame to rotate through the chain, and the second wheel drives the front wheel of the frame to rotate, thus realizing the synchronous rotation of the front and rear wheels of the frame. This allows for the dynamic rotation test of the wheels of the frame.

[0012] Furthermore, the frame is equipped with a simulated bracket, the front section of the lower surface of the simulated bracket is fixedly connected to the handlebars of the frame, and the rear section of the lower surface of the simulated bracket is fixedly installed on the seat surface of the frame. The test bench is provided with a support rod on its surface. A pressure bracket is installed at the upper end of the support rod. A hydraulic cylinder is slidably installed on the pressure bracket along the vehicle body direction. A transmission screw is rotatably installed inside the pressure bracket. The upper end of the hydraulic cylinder is threaded to the surface of the transmission screw. The transmission screw can be used to adjust the horizontal movement of the hydraulic cylinder. A pressure seat is provided at the telescopic end of the hydraulic cylinder. The pressure seat is horizontally slidably installed on the upper surface of the simulation bracket.

[0013] By applying pressure to the surface of the simulated frame using a hydraulic cylinder and pressure seat, the simulated frame can simulate a cyclist, applying riding pressure to the surface of the frame. The horizontal movement of the hydraulic cylinder can change the position of the center of gravity of the simulated cyclist during riding.

[0014] Furthermore, a rotating plate is rotatably installed inside both the front support plate and the rear support plate, and the rotating plate is rotatably installed along both sides of the vehicle frame. The placement plate is fixedly installed on the surface of the rotating plate. The test platform is equipped with a motor module for driving the rotating plate to rotate. The rotation of the rotating plate can simulate the dynamic tilting of a bicycle when it is in motion.

[0015] Furthermore, the support rod consists of an upper rod and a lower rod, with a telescopic rod between the upper rod and the lower rod, and the telescopic rod is controlled by a hydraulic system to extend and retract. The extension end of the hydraulic cylinder is rotatably connected to the pressure seat. The extension end of the hydraulic cylinder has a pressure sensor in the vertical direction, and the pressure sensor is electrically connected to the hydraulic system of the extension rod.

[0016] A pressure sensor is used to detect the vertical pressure of the hydraulic cylinder on the simulated support. When the bicycle tilts dynamically, the vertical pressure of the hydraulic cylinder on the simulated support can be simulated as the vertical gravity pressure of the rider on the bicycle. By using the pressure sensor to detect the pressure change of the hydraulic cylinder on the simulated support, when the pressure change exceeds a set threshold, the pressure sensor sends a signal to the hydraulic system of the telescopic rod. The hydraulic system controls the extension and retraction of the telescopic rod, so that the height of the pressure support can be adjusted as the frame tilts dynamically, so that the pressure of the hydraulic cylinder on the simulated support is maintained within a certain range.

[0017] Furthermore, the mating holes of the central shafts of both the first and second sprockets are universal joint structures. When the bicycle frame is dynamically tilted, the rotation of the first sprocket can still drive the drive gear of the frame to rotate through the universal joint, and the second sprocket can drive the front wheel of the frame to rotate through the universal joint.

[0018] Compared with the prior art, the present invention has the following beneficial effects: 1. This bicycle with a shock-absorbing front fork folding mechanism, through the design of the front and rear support wheels on the two sets of placement plates on the test platform surface, can achieve dynamic rotation platform testing of the bicycle. The space length required for dynamic rotation of the bicycle is small. At the same time, through the combination design of multiple sets of adjustment rods and the front support wheel, it can simulate slopes of different shapes, thereby simulating road obstacles when the bicycle is riding, and thus simulating the shock absorption effect of the bicycle's shock-absorbing front fork. The combination design of the front and rear support plates and the arc-shaped grooves on the test platform surface can perform folding tests on the bicycle. Multiple tests of the bicycle can be completed on the same test platform.

[0019] 2. This bicycle with a shock-absorbing folding fork, through the combination design of support rods and buffer rods with pressure brackets, hydraulic cylinders, pressure seats and simulation brackets, can simulate the gravitational pressure of a bicycle during riding. By adjusting the position of the pressure seat, it can simulate the change of the rider's center of gravity during riding, which can better test the dynamic rotational balance of the bicycle and the shock absorption effect of the bicycle's shock-absorbing fork. Attached Figure Description

[0020] Figure 1 This is the front view of the test bench structure of the present invention. Figure 1 ; Figure 2 This is a schematic diagram of the internal placement plate of the test bench and the front and rear wheels of the vehicle frame. Figure 3 This is a schematic diagram of the distribution structure of the front support wheels inside the front support plate of the present invention; Figure 4 This is the front view of the test bench structure of the present invention. Figure 2 ; Figure 5 This is a top view of the distribution structure of the front and rear support plates of the present invention; Figure 6 This is a schematic diagram of the driving structure of the front and rear support plates inside the test bench of the present invention; Figure 7 This is a top view of the pressure support structure of the present invention.

[0021] In the diagram: 1. Test bench; 2. Front support plate; 3. Rear support plate; 4. Rotating plate; 41. Placement plate; 5. Front support wheel; 51. Adjusting rod; 6. Rear support wheel; 7. Rotary seat; 8. Hydraulic rod; 81. Gear rack; 82. Adjusting gear; 83. Connecting piece; 9. Support rod; 91. Telescopic rod; 10. Pressure bracket; 101. Transmission screw; 11. Hydraulic cylinder; 111. Pressure seat; 12. Simulation bracket; 13. Support plate; 131. Rotary wheel one; 132. Rotary wheel two; 14. Frame; 141. Shock-absorbing front fork; 142. Folding device. Implementation

[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] An example of a bicycle with a shock-absorbing folding fork is as follows: Example

[0024] Please see Figures 2-3 , Figures 5-6 A bicycle with a shock-absorbing front fork folding mechanism includes a test platform 1. The surface of the test platform 1 is provided with two sets of placement plates 41, which correspond to the front and rear wheels of the bicycle frame 14, respectively, for positioning the front and rear wheels. The surface of the test platform 1 has arc-shaped grooves. The test platform also includes: Several front support wheels 5 are distributed inside the placement plate 41 corresponding to the front wheels of the frame 14. The support shafts of the front support wheels 5 are slidably mounted on the inner surface of the placement plate 41, and the front support wheels 5 are rotatably mounted on the surface of the support shafts. An adjustment rod 51 for adjusting the height of the front support wheels 5 is installed inside the test bench 1. The adjustment rod 51 is a hydraulic adjustment rod. The height of the front support wheels 5 at different positions can be adjusted by using the adjustment rod 51, thereby simulating the formation of slopes of different shapes.

[0025] Several front support wheels 5 are distributed on the front and rear tire treads of the front wheel under the frame 14. By adjusting the height of the front support wheels 5, rotational resistance can be formed on the lower surface of the front wheel of the frame 14, thereby simulating the formation of a slope.

[0026] Several rear support wheels 6 are rotatably mounted inside a mounting plate 41 corresponding to the rear wheels of the frame 14, for supporting the rear wheels of the frame 14. These rear support wheels 6 are distributed on the front and rear tire treads of the lower surface of the rear wheels of the frame 14, arranged in an arc shape and in contact with the rear tire treads of the frame 14. When the rear wheels of the frame 14 rotate, they drive the rear support wheels 6 to rotate, thus providing dynamic support for the rear wheels of the frame 14. The support plate includes a front support plate 2 and a rear support plate 3. Two sets of placement plates 41 are respectively installed in the front support plate 2 and the rear support plate 3. The support plate is slidably installed in the groove on the surface of the test bench 1. When the front support plate 2 and the rear support plate 3 slide in the groove, the frame 14 can be folded through the placement plate 41. The front and rear frames 14 of the frame 14 will rotate and fold along the folding device 142.

[0027] The test bench 1 is equipped with a rotating base 7 inside. The front support plate 2 and the rear support plate 3 are rotatably mounted on the surface of the rotating base 7 through the connector 83. The test bench 1 is equipped with a drive mechanism for driving the two sets of connectors 83 to rotate.

[0028] The drive mechanism includes: a hydraulic rod 8, which is installed inside the test bench 1, and a U-shaped toothed rod 81 is installed at the telescopic end of the hydraulic rod 8; two sets of adjusting gears 82, which are rotatably installed on the surface of the rotating seat 7, and are respectively fixedly connected to two sets of connecting parts 83, and respectively meshing with the tooth surfaces on both sides inside the toothed rod 81.

[0029] The movement of the rack 81 is controlled by the hydraulic rod 8. The toothed surfaces on both sides of the rack 81 mesh with two sets of adjusting gears 82, which will drive the front support plate 2 and the rear support plate 3 to rotate in opposite directions, thereby enabling the bicycle frame 14 to be folded for testing. Example

[0030] Please see Figure 1 , Figure 4 , Figure 7 A bicycle with a shock-absorbing front fork folding device includes a test bench 1. The surface of the test bench 1 is provided with two sets of placement plates 41, which correspond to the front wheel and the rear wheel of the bicycle frame 14, respectively, for positioning the front wheel and the rear wheel of the bicycle frame 14. The surface of the test bench 1 is provided with an arc-shaped groove.

[0031] A rotating plate 4 is rotatably mounted inside both the front support plate 2 and the rear support plate 3. The rotating plate 4 is rotatably mounted along both sides of the frame 14. A placement plate 41 is fixedly mounted on the surface of the rotating plate 4. A motor module for driving the rotating plate 4 to rotate is installed inside the test platform 1. The rotation of the rotating plate 4 can simulate the dynamic tilting of a bicycle while riding. The test platform also includes: Several front support wheels 5 are distributed inside the placement plate 41 corresponding to the front wheels of the frame 14. The support shafts of the front support wheels 5 are slidably mounted on the inner surface of the placement plate 41, and the front support wheels 5 are rotatably mounted on the surface of the support shafts. An adjustment rod 51 for adjusting the height of the front support wheels 5 is installed inside the test bench 1. The adjustment rod 51 is a hydraulic adjustment rod. The height of the front support wheels 5 at different positions can be adjusted by using the adjustment rod 51, thereby simulating the formation of slopes of different shapes.

[0032] Several rear support wheels 6 are rotatably mounted inside the placement plate 41 corresponding to the rear wheels of the frame 14, for supporting the rear wheels of the frame 14.

[0033] The support plate includes a front support plate 2 and a rear support plate 3. Two sets of placement plates 41 are respectively installed in the front support plate 2 and the rear support plate 3. The support plate is slidably installed in the groove on the surface of the test bench 1. When the front support plate 2 and the rear support plate 3 slide in the groove, the frame 14 can be folded through the placement plate 41. The front and rear frames 14 of the frame 14 will rotate and fold along the folding device 142.

[0034] A support plate 13 is slidably mounted on the surface of the test bench 1. A first rotating wheel 131 and a second rotating wheel 132 are rotatably mounted on the surface of the support plate 13 near the frame 14. The first rotating wheel 131 and the second rotating wheel 132 are connected by a timing belt or chain. A motor device for driving the first rotating wheel 131 to rotate is mounted on the surface of the support plate 13. The first rotating wheel 131 is coaxial with the drive gear of the frame 14, and the second rotating wheel 132 is coaxial with the front wheel of the frame 14.

[0035] The central shaft of sprocket 131 is provided with a mating hole that matches the shaft of the drive gear of frame 14, and the central shaft of sprocket 132 is provided with a mating hole that matches the shaft of the front wheel of frame 14. Driven by a motor, sprocket 131 rotates, causing the drive gear of frame 14 and sprocket 132 to rotate together. The drive gear drives the rear wheel of frame 14 via a chain, and sprocket 132 drives the front wheel of frame 14, thus achieving synchronous rotation of the front and rear wheels of frame 14. This allows for dynamic rotational testing of the wheels of frame 14.

[0036] The mating holes of the central shafts of both sprocket 131 and sprocket 212 are universal joint structures. When the bicycle frame 14 is dynamically tilted, the rotation of sprocket 131 can still drive the drive gear of the frame 14 to rotate through the universal joint, and sprocket 2132 drives the front wheel of the frame 14 to rotate through the universal joint.

[0037] The frame 14 is equipped with a simulation bracket 12. The front section of the lower surface of the simulation bracket 12 is fixedly connected to the handlebars of the frame 14, and the rear section of the lower surface of the simulation bracket 12 is fixedly installed on the seat surface of the frame 14. The surface of the test bench 1 is provided with a support rod 9, which consists of an upper rod and a lower rod. A telescopic rod 91 is provided between the upper rod and the lower rod. The telescopic rod 91 is controlled by a hydraulic system to extend and retract.

[0038] A pressure bracket 10 is installed at the upper end of the support rod 9. A hydraulic cylinder 11 is slidably installed on the pressure bracket 10 along the body direction of the frame 14. A transmission screw 101 is rotatably installed inside the pressure bracket 10. The upper end of the hydraulic cylinder 11 is threadedly connected to the surface of the transmission screw 101. The transmission screw 101 can be used to adjust the horizontal movement of the hydraulic cylinder 11. A pressure seat 111 is provided at the telescopic end of the hydraulic cylinder 11. The pressure seat 111 is horizontally slidably installed on the upper surface of the simulation bracket 12.

[0039] By applying pressure to the surface of the simulated support 12 using the hydraulic cylinder 11 and the pressure seat 111, the simulated support 12 can simulate a cyclist and apply riding pressure to the surface of the frame 14. The horizontal movement of the hydraulic cylinder 11 can change the position of the center of gravity of the simulated cyclist when riding.

[0040] The extension end of the hydraulic cylinder 11 is rotatably connected to the pressure seat 111. The extension end of the hydraulic cylinder 11 has a pressure sensor in the vertical direction, and the pressure sensor is connected to the hydraulic system electrical signal of the extension rod 91.

[0041] A pressure sensor is used to detect the vertical pressure of the hydraulic cylinder 11 on the simulated support 12. When the bicycle is dynamically tilted, the vertical pressure of the hydraulic cylinder 11 on the simulated support 12 can be simulated as the vertical gravity pressure of the rider on the bicycle. By using the pressure sensor to detect the pressure change of the hydraulic cylinder 11 on the simulated support 12, when the pressure change exceeds the set threshold, the pressure sensor sends a signal to the hydraulic system of the telescopic rod 91. The hydraulic system controls the telescopic rod 91 to extend and retract, so that as the frame 14 is dynamically tilted, the height of the pressure support 10 can be adjusted so that the pressure of the hydraulic cylinder 11 on the simulated support 12 is maintained within a certain range.

[0042] Working principle of bicycle dynamic balance testing platform: During the dynamic balance test of the bicycle, the front wheel and the rear wheel of the bicycle are placed in two sets of placement plates 41 on the surface of the test platform 1, respectively. The front wheel will contact the front support wheel 5, and the rear wheel will be in contact with the rear support wheel 6. Then, the support plate 13 is moved so that the first rotating wheel 131 and the second rotating wheel 132 move closer to the frame 14, and the universal joints at the free ends of the central shafts of the first rotating wheel 131 and the second rotating wheel 132 are connected to the drive gear of the frame 14 and the axle of the front wheel. The hydraulic cylinder 11 applies pressure to the pressure seat 111 so that the pressure of the simulated support 12 on the frame 14 reaches the set value to be tested.

[0043] When the motor on the surface of the support plate 13 is activated, the motor drives the front and rear wheels of the bicycle to rotate via the first rotating wheel 131, the second rotating wheel 132, and the drive sprocket in the frame 14. The front and rear wheels rotate on the surfaces of the front support wheel 5 and the rear support wheel 6, respectively. (Refer to...) Figure 2 At this time, the front support wheel 5 and the rear support wheel 6 provide dynamic rotation support for the front and rear wheels of the bicycle, and at the same time make the front and rear wheels of the bicycle reach a state of dynamic balance. At this time, the dynamic rotation test of the front and rear wheels of the bicycle can be carried out.

[0044] When it is necessary to test the shock absorption performance of the 141 front fork of a bicycle, refer to Figure 2 At this time, the front support wheels 5 are all in contact with the front wheel of the frame 14, and the front wheel is rotating smoothly. The shock-absorbing fork 141 is in a static support state. The height of the front support wheels 5 is changed by adjusting the rod 51. When the height of the front support wheels 5 is adjusted upward from the position of the front tire tread on the lower surface of the front wheel, the front support wheels 5 will form an upward slope to resist the front wheel of the frame 14. At the same time, under the pressure of the simulated bracket 12, the shock-absorbing fork 141 will retract, thereby achieving dynamic shock absorption support. By detecting the change in the height of the front section of the simulated bracket 12, the shock absorption effect of the bicycle shock-absorbing fork 141 can be indirectly tested. By changing the pressure of the simulated bracket 12 on the frame 14, the shock absorption effect of the bicycle shock-absorbing fork 141 when people of different weights ride bicycles can be tested.

[0045] By adjusting the height of the front support wheel 5 at different positions using the adjusting rod 51, different shapes of slope obstacles can be formed, thereby simulating the shock absorption effect of the shock-absorbing fork 141 when a bicycle passes through different slope surfaces.

[0046] When a cyclist gets up and accelerates, the bicycle will sway from side to side, but the cyclist's body will not sway with the bicycle. Therefore, when conducting a dynamic tilt balance test on the bicycle, the motor module inside the test platform 1 drives the rotating plate 4 to rotate left and right along both sides of the frame 14, which can simulate the dynamic tilt of the bicycle when it is riding. When the bicycle tilts dynamically, the pressure sensor at the extension end of the hydraulic cylinder 11 detects the vertical pressure output by the hydraulic cylinder 11, which is used to simulate the weight pressure of the rider on the bicycle. Based on the detection results of the pressure sensor, the height of the extension end of the hydraulic cylinder 11 is adjusted by the extension rod 91 to keep the vertical pressure output by the hydraulic cylinder 11 within a certain range.

[0047] Through the above operations, a dynamic tilt balance test can be performed on the bicycle. The height position of the front support wheel 5 can also be adjusted by adjusting the adjustment rod 51 to test the shock absorption effect of the shock-absorbing fork 141 under dynamic tilt conditions.

[0048] When a folding test is required on the bicycle folding mechanism 142, the first rotating wheel 131 and the second rotating wheel 132 are separated from the frame 14, and the simulated support 12 is also separated from the frame 14. Then, the hydraulic rod 8 is activated, which drives the rack 81 to move. The rack 81 meshes with the adjusting gear 82, which drives the connecting piece 83 to rotate. The connecting piece 83 drives the front support plate 2 and the rear support plate 3 to rotate. The front support plate 2 drives the front frame of the frame 14 to rotate through the placement plate 41, and the rear support plate 3 drives the rear frame of the frame 14 to rotate through the placement plate 41. By repeatedly folding and unfolding the frame 14, the folding mechanism 142 of the bicycle can be tested.

[0049] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A bicycle with a shock-absorbing front fork folding mechanism, comprising a test bench (1) and a bicycle frame (14), characterized in that: The surface of the test platform (1) is provided with two sets of placement plates (41), which correspond to the front wheel and rear wheel of the bicycle frame (14) respectively. The surface of the test platform (1) is provided with arc-shaped grooves. The test platform also includes: A plurality of front support wheels (5) are distributed inside the placement plate (41) corresponding to the front wheels of the frame (14). The support shafts of the front support wheels (5) are slidably mounted on the inner surface of the placement plate (41). An adjustment rod (51) for adjusting the height of the front support wheels (5) is installed inside the test bench (1). A plurality of rear support wheels (6) are rotatably mounted inside the placement plate (41) corresponding to the rear wheels of the frame (14); The support plate includes a front support plate (2) and a rear support plate (3). Two sets of placement plates (41) are respectively installed in the front support plate (2) and the rear support plate (3). The support plate is slidably installed in the groove on the surface of the test bench (1).

2. The bicycle with a shock-absorbing front fork folding mechanism according to claim 1, wherein, Several of the aforementioned front support wheels (5) are distributed on the front and rear tire treads of the lower surface of the front wheel of the frame (14); Several rear support wheels (6) are distributed on the front and rear tire surfaces of the rear tires on the lower surface of the frame (14). The several rear support wheels (6) are distributed in an arc shape and fit against the rear tire surface of the frame (14).

3. The bicycle with a shock-absorbing fork folding mechanism according to claim 1, wherein, The test bench (1) is equipped with a rotating seat (7) inside. The front support plate (2) and the rear support plate (3) are rotatably mounted on the surface of the rotating seat (7) through connectors (83). The test bench (1) is equipped with a drive mechanism for driving the two sets of connectors (83) to rotate.

4. The bicycle with a shock-absorbing fork folding mechanism according to claim 3, wherein, The drive mechanism includes: A hydraulic rod (8) is installed inside the test bench (1), and a U-shaped toothed rod (81) is installed at the telescopic end of the hydraulic rod (8). Two sets of adjusting gears (82) are rotatably mounted on the surface of the rotating seat (7). The two sets of adjusting gears (82) are fixedly connected to the two sets of connecting parts (83) respectively. The two sets of adjusting gears (82) mesh with the tooth surfaces on both sides inside the rack (81) respectively.

5. The bicycle with a shock-absorbing fork folding mechanism according to any one of claims 1-4, wherein, The test bench (1) is slidably mounted with a support plate (13). The support plate (13) is rotatably mounted with a first rotating wheel (131) and a second rotating wheel (132) on the side of the support plate (13) near the frame (14). The first rotating wheel (131) and the second rotating wheel (132) are connected by a timing belt or chain. The first rotating wheel (131) is coaxial with the drive gear of the frame (14), and the second rotating wheel (132) is coaxial with the front wheel of the frame (14). The central shaft of the first wheel (131) is provided with a mating hole that matches the shaft of the drive gear of the frame (14), and the central shaft of the second wheel (132) is provided with a mating hole that matches the shaft of the front wheel of the frame (14).

6. The bicycle with a shock-absorbing fork folding mechanism according to claim 5, wherein, The frame (14) is equipped with a simulated bracket (12). The front section of the lower surface of the simulated bracket (12) is fixedly connected to the handlebars of the frame (14), and the rear section of the lower surface of the simulated bracket (12) is fixedly installed on the seat surface of the frame (14). The test bench (1) is provided with a support rod (9) on its surface. A pressure bracket (10) is installed at the upper end of the support rod (9). A hydraulic cylinder (11) is slidably installed on the pressure bracket (10) along the vehicle body direction of the frame (14). A pressure seat (111) is provided at the telescopic end of the hydraulic cylinder (11). The pressure seat (111) is horizontally slidably installed on the upper surface of the simulation bracket (12).

7. The bicycle with a shock-absorbing fork folding mechanism according to claim 6, wherein, The front support plate (2) and the rear support plate (3) are both rotatably installed with rotating plates (4), which are rotatably installed along both sides of the vehicle frame (14). The placement plate (41) is fixedly installed on the surface of the rotating plate (4).

8. The bicycle with a shock-absorbing fork folding mechanism according to claim 7, wherein, The support rod (9) consists of an upper rod and a lower rod, and a telescopic rod (91) is provided between the upper rod and the lower rod. The telescopic rod (91) is controlled by a hydraulic system to extend and retract. The extension end of the hydraulic cylinder (11) is rotatably connected to the pressure seat (111). The extension end of the hydraulic cylinder (11) has a pressure sensor in the vertical direction. The pressure sensor is electrically connected to the hydraulic system of the extension rod (91).

9. The bicycle with a shock-absorbing fork folding mechanism according to claim 7, wherein, The mating holes of the central shafts of the first rotating wheel (131) and the second rotating wheel (132) are both universal joint structures.

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