A children's bicycle brake test device and test method thereof

Abstract

The present invention discloses a brake test device for a children's bicycle, which includes a test device and a control device. The test device includes a placement platform, a fixing component, a fixing component 1, a braking device, a pedal drive device, a dynamic balance detection device, a rotation detection device, a propping component and a vibration reduction mechanism. The present invention also discloses a testing method. The present invention realizes the simultaneous detection of the dynamic balance performance and the braking performance of the driving wheel of the children's bicycle, saves test steps and time, improves test efficiency, and can be used for testing children's bicycles of various specifications, improves applicability and saves costs; by setting a vibration reduction mechanism, the influence of external vibration on the brake test device of the children's bicycle is reduced, the test accuracy is improved, and the subsequent use safety of the children's bicycle is ensured; the present invention can obtain the brake pressure value, the pedal pressure value, the speed data and the torque data, and combine the analysis to improve the reliability of the test data and the test accuracy.

Description

Technical Field

[0001] The present invention relates to the technical field of children's bicycle detection equipment, and particularly relates to a braking test device for children's bicycles and a test method thereof. Background Art

[0002] A bicycle is a means of transportation commonly used in our daily life, and among them, children's bicycles for children to ride have been developed. Since children's reaction speed is slower compared with adults, higher requirements are imposed on the braking performance and balance performance of children's bicycles. The detection quality of braking performance and balance performance is an important detection condition for whether children's bicycles can leave the factory. Currently, the braking performance and dynamic balance performance tests of children's bicycles are mostly carried out manually by applying braking pressure and manual detection. The detection accuracy of braking performance is relatively low, and the dynamic balance performance is detected by mechanical means, with relatively low detection accuracy. Moreover, the two detection processes cannot be carried out synchronously, the test steps are cumbersome, time-consuming, and the test cost is high, which affects the test efficiency of children's bicycles. In addition, the existing test devices for children's bicycles have no shock-absorbing function, and external vibration will cause the position deviation of the children's bicycle to be tested or affect the detection accuracy of the performance detection components, thereby affecting the test accuracy and quality of braking performance and dynamic balance performance, and affecting the subsequent use safety of children's bicycles. Summary of the Invention

[0003] The present invention aims at the current technical deficiencies and provides a braking test device for children's bicycles.

[0004] The present invention also provides a test method.

[0005] The technical solution adopted by the present invention to achieve the above object is as follows:

[0006] A braking test device for children's bicycles includes a test device and a control device. The test device is arranged on one side of the control device, and a cable is provided between the test device and the control device to form an electrical connection. The control device includes a workbench, a control box, a control computer, and a data printing device. The test device includes a placement platform, a fixing component, a fixing component one, a braking device, a pedal driving device, a driving wheel data test device, and a spreading component. The braking device is arranged on one side of the placement platform, and the driving wheel data test device is arranged on the other side of the placement platform. A shock-absorbing mechanism is provided at the bottom of the placement platform. The driving wheel data test device includes a dynamic balance detection device and a rotation detection device. An air pressure device is also provided on the workbench.

[0007] For further improvement, the placement platform includes a rectangular frame, Platform 1, Platform 2 and Platform 3. Platform 1 and Platform 2 are arranged at both ends of the rectangular frame in a mirror-image manner. Platform 3 is arranged between Platform 1 and Platform 2. The damping mechanism includes a plurality of damping components, and the plurality of damping components are respectively arranged on the bottom surfaces of the four corners of the rectangular frame. The plurality of damping components each include a suspension component and a spring damper. The suspension component is provided with a connecting platform. One end of the spring damper is arranged on the connecting platform, and the other end of the spring damper is threadedly connected to the bottom of the rectangular frame. The spring damper is provided with a spring.

[0008] For further improvement, the connecting platform includes a platform part, a connecting part and an embedding part. The suspension components each include a support, a first suspension magnet group and a second suspension magnet group. The bottom of the support is provided with support feet. The support is also provided with a concave cavity and an annular groove. The embedding part is arranged in the concave cavity and can move up and down in the concave cavity. The top surface of the support is also provided with a plurality of connecting shafts, and a rotating pressing block is arranged on each of the plurality of connecting shafts.

[0009] For further improvement, the first suspension magnet group includes Magnet 1 and Magnet 2. The second suspension magnet group includes Ring Magnet 1 and Ring Magnet 2. The inner bottom surface of the concave cavity is provided with a groove. Magnet 1 is arranged in the groove. Magnet 2 is arranged on the bottom surface of the embedding part. Ring Magnet 1 is arranged in the annular groove and is fixed in the annular groove by a plurality of rotating pressing blocks. Ring Magnet 2 is arranged on the upper surface of the embedding part;

[0010] The N pole of Magnet 1 faces vertically upward towards the bottom surface of the embedding part. The N pole of Magnet 2 faces vertically downward towards the inner bottom surface of the concave cavity. The N pole of Ring Magnet 1 faces vertically downward towards the upper surface of the embedding part. The N pole of Ring Magnet 2 faces vertically upward towards the bottom surface of the platform part. A repulsive force between like poles is formed between Magnet 1 and Magnet 2. A repulsive force between like poles is formed between Ring Magnet 1 and Ring Magnet 2. The suspension damping between the connecting platform and the support is realized by the repulsive force between like poles formed between Magnet 1 and Magnet 2 and the repulsive force between like poles formed between Ring Magnet 1 and Ring Magnet 2.

[0011] For further improvement, the rectangular frame, Platform 1, Platform 2 and Platform 3 are all composed of multiple aluminum profiles. The aluminum profiles are all provided with adjustment grooves. Platform 1, Platform 2 and Platform 3 are all fixed on the rectangular frame by multiple screws. The braking device is arranged on Platform 1. The braking device includes a base, a bracket, a servo motor, a lead screw, a connecting block and a braking test component. The bracket is arranged on the base. The base is provided with a set of straight slot holes. The bracket is provided with a mounting block. The servo motor is arranged on the mounting block. The lead screw is connected to the servo motor. The lead screw is provided with a lead screw nut. The connecting block is provided with multiple guide sleeves and a central hole. The bracket is provided with multiple guide posts. The connecting block passes through the lead screw and is threadedly connected to the lead screw nut. The multiple guide sleeves are respectively sleeved outside the guide posts. The servo motor is used to drive the connecting block to move up and down along the direction of the guide posts. The connecting block is provided with a connecting end. The braking test component is arranged on the connecting end. The braking test component includes a connecting plate, a pressure sensor and a pressing head. The pressure sensor is arranged on the connecting plate. The pressing head is connected to the pressure sensor.

[0012] For further improvement, the fixing component and the fixing component 1 are both arranged on Platform 2. The fixing component includes a base 1, a cylinder 1 and two quick clamps. The two quick clamps are arranged on the base 1. The base 1 is provided with a mounting plate 1. The cylinder 1 is arranged on the mounting plate 1. The two quick clamps are provided with handles. A connecting shaft 1 is arranged between the two handles. The cylinder 1 is provided with a driving rod 1. The driving rod 1 is provided with an annular connecting block. The annular connecting block is connected to the connecting shaft 1 to form a rotational hinge connection. The cylinder 1 is used to control the opening or clamping action of the two quick clamps. The fixing component 1 includes a base 2 and a limiting plate 2. The cylinder 1 is provided with a connecting pipe 1. The connecting pipe 1 is connected to the pneumatic equipment.

[0013] As a further improvement, the pedal drive device includes a base three, a bracket three, a servo motor three, a lead screw three, a connecting block three and a drive test assembly. The bracket three is arranged on the base three, the base three is provided with a straight slot hole group three, the bracket three is provided with a mounting block three, the servo motor three is arranged on the mounting block three, the lead screw three is connected to the servo motor three, the lead screw three is provided with a lead screw nut three, the connecting block three is provided with a plurality of guide sleeves three and a center hole three, the bracket three is provided with a plurality of guide columns three, the connecting block three passes through the lead screw three and is threadedly connected to the lead screw nut three, a plurality of guide sleeves three are respectively sleeved on the outside of the guide column three, the servo motor three is used to drive the connecting block three to move up and down along the guide column three, the connecting block three is provided with a connecting end three, the drive test assembly is arranged on the connecting end three, the drive test assembly includes a connecting plate three, a pressure sensor three and a pressure head three, the pressure sensor three is arranged on the connecting plate three, the pressure head three is connected to the pressure sensor three, and the pressure head three and the pressure sensor three are provided with a connecting rod three.

[0014] For further improvement, the platform three is provided with a bracket four, and the bracket four includes a base four, two support rods and a top plate, and the top plate is fixed on the top of the two support rods. The dynamic balance detection device includes two infrared sensors and a data collector, and the two infrared sensors are provided with a magnetic base, and the two infrared sensors are respectively arranged on the outer sides of the support rods through the magnetic bases. The data collector is arranged in the control box, and the two infrared sensors are electrically connected to the data collector. The top plate is provided with a cylinder two, and the base four is provided with a cylinder three, and the cylinder two is provided with a drive rod two, and the drive rod two is provided with a roller two, and the cylinder three is provided with a drive rod three, and the drive rod three is provided with a roller three. The platform three is also provided with a bracket five, and the support assembly is arranged on the bracket five, and the support assembly includes a cylinder five and a plurality of support cylinders, and the cylinder five is provided with a drive rod five, and the drive rod five is provided with a cross bracket, and the plurality of support cylinders are respectively arranged on each end of the cross bracket, and the plurality of support cylinders are provided with a cylindrical support rod.

[0015] For further improvement, the rotation detection device includes a base six, a servo motor six, an encoder six, a sliding seat six and a pressure sensor six. The servo motor six is longitudinally arranged on the sliding seat six. The servo motor six is provided with a speed reducer six. The speed reducer six is provided with a winding wheel. The sliding seat six is provided with an angle block. The encoder six is arranged on the angle block. The central axes of the servo motor six, the encoder six, the speed reducer six and the winding wheel are all on the same axis. The winding wheel is provided with a synchronous webbing, and the two outer sides of the synchronous webbing are respectively in contact with the roller two and the roller three. The sliding seat six is further provided with a cylinder seven and a baffle seven. The base seven is provided with a fixed seat seven. The pressure sensor six is fixed on the fixed seat seven and arranged between the fixed seat seven and the baffle seven.

[0016] A test method for implementing the children's bicycle brake test equipment includes the following steps:

[0017] Step 1: Perform the feeding action of the bicycle to be tested. Carry and place the bicycle to be tested on the fixing components and the fixing component one of the placing platform. The cylinder one of the fixing component drives two quick clamps to fix the handlebar of the bicycle to be tested on the platform one of the placing platform. The seat of the bicycle to be tested is placed on the fixing component one. And the wheel to be tested of the bicycle to be tested is placed inside the synchronous webbing. The brake of the bicycle to be tested is arranged below the braking device. The pedal position of the bicycle to be tested is arranged above the pedal driving device.

[0018] Step 2: Perform the tension linkage action of the wheel to be tested. Multiple opening cylinders act to make the synchronous webbing close to the outer side of the wheel to be tested. The cylinder five retracts multiple opening cylinders, so that the synchronous webbing is sleeved on the outer side of the wheel to be tested. The cylinder two and the cylinder three respectively drive the roller two and the roller three to approach each other, so as to perform a tensioning action on the synchronous webbing, so that the linkage tension among the wheel to be tested, the synchronous webbing and the winding wheel is achieved.

[0019] Step 3: Perform the dynamic balance test action. The braking device is in the released state. The rotation detection device acts to drive the wheel to be tested of the bicycle to be tested to rotate. The dynamic balance detection device tests and collects the dynamic balance data of the rotating wheel to be tested. The two infrared sensors emit rays to test both sides of the rotating wheel and feed back to the data collector for processing. The processed data is transmitted to the control computer. When imbalance occurs, the infrared sensor will receive a refraction signal. When the two sides of the rotating wheel are balanced, the infrared sensor will not receive a refraction signal. After the dynamic balance data test is completed, the next test is carried out.

[0020] Step 4: Conduct the test operation of the pressure values applied to the pedal and the brake. The braking device operates to apply pressure to the brake for braking, and the pressure sensor transmits the applied pressure data to the control computer. The pedal driving device applies pressure to the pedal of the bicycle to be tested, and the pressure sensor three transmits the applied pressure data to the control computer. After the pressure application is completed, the encoder six of the detection device is rotated to detect whether the synchronous belt rotates. After detecting rotation, the maximum driving pressure value of the pedal driving device is obtained, and the braking pressure value of the braking device is obtained, and the maximum driving pressure value and the braking pressure value are fed back to the control computer;

[0021] Step 5: Conduct the test operation of the emergency braking data. First, release the braking device, the servo motor six operates to drive the wheel to be tested to rotate, the braking device operates to perform the braking action, and at the same time the wheel to be tested gradually stops rotating. The encoder six obtains the actual rotational speed data of the wheel to be tested from the start of braking to the wheel to be tested stopping, and feeds the actual rotational speed data back to the control computer;

[0022] Step 6: The control computer processes multiple sets of data to obtain the test results. The cylinder two and the cylinder three drive the roller two and the roller three to separate from each other respectively, so that the synchronous belt is in a loose state. The cylinder five moves the cross bracket towards the wheel direction, and the expanding cylinders respectively insert the cylindrical struts between the inner side of the synchronous belt and the outer side of the wheel. The expanding cylinders operate to expand the synchronous belt, and at the same time the fixing components are released, the tested bicycle is unloaded, and then a new bicycle to be tested is carried for loading, and the normal test process is completed.

[0023] Advantages of the present invention: The present invention realizes the synchronous detection of the dynamic balance performance and braking performance of the driving wheel of a children's bicycle on the same test equipment by setting a braking device, a pedal driving device, and a driving wheel data testing device, without the need for handling and disassembly, saving test steps and time, and improving test efficiency; by setting multiple adjustment slots on the placement platform, the positions of the fixing components, the first fixing component, the braking device, the pedal driving device, the driving wheel data testing device, and the spreading component can be adjusted according to the specifications of the children's bicycle to be tested, constituting a children's bicycle braking test equipment applicable to children's bicycles of different specifications and sizes. While improving applicability, it saves the customization cost of the test equipment; by setting a vibration damping mechanism composed of a suspension component and a spring damper to provide a dual vibration damping structure of suspension vibration damping and mechanical vibration damping, greatly reducing the impact of external vibration on the children's bicycle braking test equipment, greatly improving the test accuracy, and ensuring the subsequent use safety of the children's bicycle; by setting a braking device to contact the braking operator and obtaining the pressure value data during braking through a pressure sensor, the braking device realizes automatic braking and obtains the pressure data during braking; by setting a pedal driving device to apply a driving force to the pedal and feedback the maximum pressure value of the applied driving pedal action to the control computer for processing and analysis; by setting a rotation detection device to drive the rotation of the wheel to be tested and obtain the rotation speed and torque values of the wheel to be tested during emergency braking test, and feedback and transmit them to the control computer for processing to obtain the test results; through the control computer, multi-data analysis of the pressure data of the braking device, the driving pressure value data of the pedal driving device, the rotation speed and torque of the rotation detection device is carried out to obtain the test data results of the braking performance of the children's bicycle, improving the reliability of the braking performance of the children's bicycle; by setting a dynamic balance detection device to realize the dynamic balance test of the driving wheel, greatly improving the test efficiency and the test accuracy of the dynamic balance performance of the wheel; by setting a fixing component to automatically clamp or loosen the handlebar, improving the efficiency of loading and fixing, and by setting a spreading component to realize the spreading of the synchronous webbing, thus facilitating the placement of the wheel and improving the loading efficiency, thereby improving the subsequent test efficiency.

[0024] The following further describes the present invention in conjunction with the accompanying drawings and specific embodiments. Description of the Drawings

[0025] Figure 1 It is a schematic diagram of the overall structure of the children's bicycle braking test equipment of this embodiment;

[0026] Figure 2 It is a schematic diagram of the vibration damping component structure of this embodiment;

[0027] Figure 3 It is an exploded view of the vibration damping component of this embodiment;

[0028] Figure 4 Schematic cross-sectional structure diagram of the vibration damping component of this embodiment;

[0029] Figure 5 Schematic structure diagram of the fixing component of this embodiment;

[0030] Figure 6 Schematic structure diagram of the braking device of this embodiment;

[0031] Figure 7 Schematic structure diagram of the foot pedal drive device of this embodiment;

[0032] Figure 8 Schematic structure diagram of the spreading component of this embodiment;

[0033] Figure 9 Schematic structure diagram of the rotation detection device of this embodiment;

[0034] Figure 10 Schematic cross-sectional structure diagram of the connection of the support four, cylinder two and cylinder three of this embodiment;

[0035] Figure 11 Schematic structure diagram of the infrared sensor of this embodiment Specific implementation manner

[0036] The following is only a preferred embodiment of the present invention, and does not limit the protection scope of the present invention accordingly.

[0037] Embodiment, see the appendix Figures 1 to 11 , A children's bicycle brake test device 1 includes a test device 2 and a control device 3. The test device 2 is arranged on one side of the control device 3. A cable is provided between the test device 2 and the control device 3 to form an electrical connection. The control device 3 includes a workbench 30, a control box 31, a control computer 32 and a data printing device 33. The test device 2 includes a placement platform 4, a fixing component 5, a fixing component one 6, a braking device 7, a foot pedal drive device 8, a driving wheel data test device 9 and a spreading component 10. The braking device 7 is arranged on one side of the placement platform 4. The driving wheel data test device 9 is arranged on the other side of the placement platform 4. A vibration damping mechanism 11 is provided at the bottom of the placement platform 4. The driving wheel data test device 9 includes a dynamic balance detection device 12 and a rotation detection device 13. The workbench 30 is also provided with a pneumatic device.

[0038] The placement platform 4 includes a rectangular frame 40, a first platform 41, a second platform 42 and a third platform 43. The first platform 41 and the second platform 42 are arranged at both ends of the rectangular frame 40 in a mirror - relative manner. The third platform 43 is arranged between the first platform 41 and the second platform 42. The damping mechanism 11 includes a plurality of damping components. The plurality of damping components are respectively arranged on the bottom surfaces of the four corners of the rectangular frame 40. The plurality of damping components all include a suspension component 110 and a spring damper 111. The suspension component 110 is provided with a connecting platform 112. One end of the spring damper 111 is arranged on the connecting platform 112, and the other end of the spring damper 111 is threadedly connected to the bottom of the rectangular frame 40. The spring damper 111 is provided with a spring. The suspension component 110 and the spring damper 111 are used to provide suspension damping and mechanical damping, thereby constituting a double - damping structure, greatly reducing the influence of vibration on the children's bicycle brake test device 1, and thus improving the test accuracy.

[0039] The connection platform 112 includes a platform portion 1120, a connection portion 1121 and an embedding portion 1122. The suspension assemblies 110 each include a support 1100, a first suspension magnet group 1101 and a second suspension magnet group 1102. Support feet 1103 are provided at the bottom of each support 1100. Each support 1100 further has a concave cavity and an annular groove. The embedding portion 1122 is disposed in the concave cavity and can move up and down in the concave cavity. A plurality of connecting shafts are provided on the top surface of the support 1100, and rotating pressing blocks 1104 are provided on each of the plurality of connecting shafts. The first suspension magnet group 1101 includes a magnet one 11010 and a magnet two 11011. The second suspension magnet group 1102 includes an annular magnet one 11020 and an annular magnet two 11021. A groove is provided on the inner bottom surface of the concave cavity. The magnet one 11010 is disposed in the groove. The magnet two 11011 is disposed on the bottom surface of the embedding portion 1122. The annular magnet one 11020 is disposed in the annular groove and is fixed in the annular groove by a plurality of rotating pressing blocks 1104. The annular magnet two 11021 is disposed on the upper surface of the embedding portion 1122. The N pole of the magnet one 11010 faces vertically upward toward the bottom surface of the embedding portion 1122. The N pole of the magnet two 11011 faces vertically downward toward the inner bottom surface of the concave cavity. The N pole of the annular magnet one 11020 faces vertically downward toward the upper surface of the embedding portion 1122. The N pole of the annular magnet two 11021 faces vertically upward toward the bottom surface of the platform portion 1120. A repulsive force between the same sexes is formed between the magnet one 11010 and the magnet two 11011. A repulsive force between the same sexes is formed between the annular magnet one 11020 and the annular magnet two 11021. Suspension and vibration reduction are achieved between the connection platform 112 and the support 1100 by the repulsive force between the same sexes formed between the magnet one 11010 and the magnet two 11011 and the repulsive force between the same sexes formed between the annular magnet one 11020 and the annular magnet two 11021, greatly reducing the contact area, thereby reducing the efficiency of vibration transmission and reducing the impact of vibration on the children's bicycle brake test device 1, and improving the test accuracy and effect.

[0040] The rectangular frame 40, the first platform 41, the second platform 42 and the third platform 43 are all composed of multiple aluminum profiles. Each of the aluminum profiles is provided with an adjustment groove 400. The adjustment groove 400 is used to adjust the positions of the fixing assembly 5, the first fixing assembly 6, the braking device 7, the pedal driving device 8, the driving wheel data testing device 9 and the spreading assembly 10, so that the children's bicycle braking test equipment 1 can be used for testing children's bicycles of various specifications and sizes, improving the applicability, and thus saving the manufacturing cost of the test equipment. The first platform 41, the second platform 42 and the third platform 43 are all fixed on the rectangular frame 40 by multiple screws. The braking device 7 is arranged on the first platform 41. The braking device 7 includes a base 70, a bracket 71, a servo motor 72, a lead screw 73, a connecting block 74 and a braking test assembly 75. The bracket 71 is arranged on the base 70. The base 70 is provided with a set of straight slot holes, which are composed of two straight slot holes. The base 70 is locked on the first platform 41 by screws. The set of straight slot holes is used to adjust the position of the braking device 7, so that the braking device 7 can be used for braking of different-sized handlebars, improving the applicability. The bracket 71 is provided with a mounting block, and the servo motor 72 is arranged on the mounting block. The lead screw 73 is connected to the servo motor 72. The lead screw 73 is provided with a lead screw nut 730. The connecting block 74 is provided with multiple guide sleeves and a central hole. The servo motor 72 is used to drive the lead screw 73 to rotate, so as to drive the connecting block 74 to move up and down, thereby realizing the pressing or loosening action of the brake. The bracket 71 is provided with multiple guide posts. The connecting block 74 passes through the lead screw 73 and is threadedly connected to the lead screw nut 730. The multiple guide sleeves are respectively sleeved outside the guide posts. The guide sleeves and the guide posts are used to ensure the stability of the up and down movement of the connecting block 74. The servo motor 72 is used to drive the connecting block 74 to move up and down along the direction of the guide posts. The connecting block 74 is provided with a connecting end, and the braking test assembly 75 is arranged on the connecting end. The braking test assembly 75 includes a connecting plate 750, a pressure sensor 751 and a pressing head 752. The pressure sensor 751 is arranged on the connecting plate 750. The pressing head 752 is connected to the pressure sensor 751. The braking test assembly 75 contacts the braking operator and obtains the pressure value data during braking through the pressure sensor 751. The braking device 7 realizes automatic braking and obtains the pressure data during braking.

[0041] The fixing component 5 and the first fixing component 6 are both arranged on the second platform 42. The fixing component 5 includes a first base 50, a first cylinder 51 and two quick clamps 52. The two quick clamps 52 are arranged on the first base 50. The first base 50 is provided with a first mounting plate. The first cylinder 51 is arranged on the first mounting plate. The two quick clamps 52 are provided with handles 520. A first connecting shaft 521 is arranged between the two handles 520. The first cylinder 51 is provided with a first driving rod. The first driving rod is provided with an annular connecting block 510. The annular connecting block 510 is connected to the first connecting shaft 521 to form a rotational hinge connection. The first cylinder 51 is used to control the opening or clamping actions of the two quick clamps 52. The first fixing component 6 includes a second base 60 and a second limiting plate 61. The first cylinder 51 is provided with a first connecting pipe. The first connecting pipe is connected to the pneumatic equipment. The fixing component 5 is used to automatically clamp or loosen the handlebar, improving the efficiency of loading and fixing. The first fixing component 6 is used to place and fix the seat.

[0042] The foot pedal driving device 8 includes a third base 80, a third bracket 81, a third servo motor 82, a third lead screw 83, a third connecting block 84 and a driving test component 85. The third bracket 81 is arranged on the third base 80. The third base 80 is provided with a third straight slot hole group 800. The third straight slot hole group 800 is composed of two straight slot holes. The straight slot holes are used to adjust the position of the foot pedal driving device 8 so that the foot pedal driving device 8 is aligned with the foot pedal position. The third bracket 81 is provided with a third mounting block. The third servo motor 82 is arranged on the third mounting block. The third lead screw 83 is connected to the third servo motor 82. The third lead screw 83 is provided with a third lead screw nut 830. The third connecting block 84 is provided with a plurality of third guide sleeves and a third center hole. The third bracket 81 is provided with a plurality of third guide posts. The third connecting block 84 passes through the third lead screw 83 and is threadedly connected to the third lead screw nut 830. The plurality of third guide sleeves are respectively sleeved outside the third guide posts. The third servo motor 82 is used to drive the third connecting block 84 to move up and down along the direction of the third guide posts. The third connecting block 84 is provided with a third connecting end. The driving test component 85 is arranged on the third connecting end. The driving test component 85 includes a third connecting plate 850, a third pressure sensor 851 and a third pressing head 852. The third pressure sensor 851 is arranged on the third connecting plate 850. The third pressing head 852 is connected to the third pressure sensor 851. The third pressing head 852 and the third pressure sensor 851 are provided with a third connecting rod. The foot pedal driving device 8 is used to apply a driving force to the foot pedal and feedback the maximum pressure value of the driving foot pedal action applied to the control computer 32 for processing and analysis.

[0043] The third platform 43 is provided with a fourth support 430. The fourth support 430 includes a fourth base, two support rods and a top plate. The top plate is fixed on the tops of the two support rods. The dynamic balance detection device 12 includes two infrared sensors 120 and a data collector 121. Both of the two infrared sensors 120 are provided with magnetic bases 122. The two infrared sensors 120 are respectively arranged on the outer sides of the support rods through the magnetic bases 122. The data collector 121 is arranged in the control box 31. The two infrared sensors 120 are electrically connected to the data collector 121. The top plate is provided with a second cylinder 14. The fourth base is provided with a third cylinder 15. The second cylinder 14 is provided with a second driving rod. The second driving rod is provided with a second roller 140. The third cylinder 15 is provided with a third driving rod. The third driving rod is provided with a third roller 150. The second cylinder 14 and the third cylinder 15 are used to automatically control the second roller 140 and the third roller 150 to approach or separate from each other, so as to realize the tensioning action of the synchronous belt 137. The third platform 43 is further provided with a fifth support 431. The spreading assembly 10 is arranged on the fifth support 431. The spreading assembly 10 includes a fifth cylinder 100 and a plurality of spreading cylinders 101. The fifth cylinder 100 is provided with a fifth driving rod. The fifth driving rod is provided with a cross support 102. The plurality of spreading cylinders 101 are respectively arranged on the respective ends of the cross support 102. The plurality of spreading cylinders 101 are all provided with cylindrical supporting rods 103. The second cylinder 14, the third cylinder 15, the fifth cylinder 100 and the plurality of spreading cylinders 101 are all provided with a second connecting pipe. The second connecting pipe is connected to the air pressure equipment. The spreading assembly 10 is used to realize the action of spreading the synchronous belt 137 away from the outer side of the wheel under test or contracting to make the synchronous belt 137 adhere to the outer side of the wheel under test, which is convenient for the connection or separation action between the wheel under test and the synchronous belt 137, saves the feeding or discharging time and improves the test efficiency.

[0044] The rotation detection device 13 includes a base six 130, a servo motor six 131, an encoder six 132, a sliding seat six 133, and a pressure sensor six 134. The servo motor six 131 is longitudinally arranged on the sliding seat six 133. The servo motor six 131 is provided with a speed reducer six 135. The speed reducer six 135 is provided with a winding wheel 136. The sliding seat six 133 is provided with an angle block. The encoder six 132 is arranged on the angle block. The central axes of the servo motor six 131, the encoder six 132, the speed reducer six 133, and the winding wheel 136 are all on the same axis. The winding wheel 136 is provided with a synchronous webbing 137, and the two outer sides of the synchronous webbing 137 are respectively in contact with the roller two 140 and the roller three 150. The sliding seat six 133 is further provided with a cylinder seven and a baffle seven. The base seven is provided with a fixing seat seven. The pressure sensor six 134 is fixed on the fixing seat seven and arranged between the fixing seat seven and the baffle seven. The rotation detection device 13 is used to drive the rotation of the wheel to be tested, and is used to obtain the rotation speed and torque values of the wheel to be tested during the emergency braking test, and feedback and transmit them to the control computer 32 for processing to obtain the test results.

[0045] A test method for implementing the children's bicycle brake test device 1 includes the following steps:

[0046] Step 1: Perform the feeding operation of the bicycle to be tested. Carry and place the bicycle to be tested on the fixing component 5 and the fixing component one 6 of the placing platform 4. The cylinder one 51 of the fixing component 5 drives two quick clamps 52 to fix the handlebar of the bicycle to be tested on the platform one 41 of the placing platform 4. The seat of the bicycle to be tested is placed on the fixing component one 6, and the wheel to be tested of the bicycle to be tested is placed inside the synchronous webbing 137. The brake of the bicycle to be tested is arranged below the braking device 7, and the pedal position of the bicycle to be tested is arranged above the pedal driving device 8.

[0047] Step 2: Perform the tensioning linkage operation of the wheel to be tested. Multiple spreading cylinders 101 act to make the synchronous webbing 137 close to the outer side of the wheel to be tested. The cylinder five 100 retracts multiple spreading cylinders 101, so that the synchronous webbing 137 is sleeved on the outer side of the wheel to be tested. The cylinder two 14 and the cylinder three 15 respectively drive the roller two 140 and the roller three 150 to approach each other, so as to perform a tensioning operation on the synchronous webbing 137, so as to achieve the linkage tensioning between the wheel to be tested, the synchronous webbing 137, and the winding wheel 136.

[0048] Step 3: Perform dynamic balance test, the brake device 7 is in the released state, the rotation detection device 13 is in operation, driving the wheel to be tested of the tested bicycle to rotate, the dynamic balance detection device 12 tests and collects the dynamic balance data of the rotating wheel to be tested, and feeds back to the data collector for processing, and the processed data is transmitted to the control computer 32; after the dynamic balance data test is completed, the next step of testing is carried out;

[0049] Step 4: Test the pedal and brake pressure values. The brake device 7 is actuated to apply pressure to the brake. The pressure sensor 751 transmits the applied pressure data to the control computer. The pedal drive device 8 applies pressure to the pedal of the bicycle to be tested. The pressure sensor 3 851 transmits the applied pressure data to the control computer 32. After the pressure is applied, the encoder 6 132 of the rotation detection device 13 detects whether the synchronous belt 137 rotates. After the rotation is detected, the maximum driving pressure value of the pedal drive device 8 is obtained, and the brake pressure value of the brake device 7 is obtained, and the maximum driving pressure value and the brake pressure value are fed back to the control computer 32;

[0050] Step 5: Perform emergency brake data test, first release the brake device 7, the servo motor 6 131 drives the wheel to be tested to rotate, the brake device 7 is actuated to brake, and the wheel to be tested gradually stops rotating. The encoder 6 132 obtains the actual speed data of the wheel to be tested from the start of braking to the stop of the wheel to be tested, and feeds back the actual speed data to the control computer 32;

[0051] Step 6: Control computer 32 to sort and process multiple sets of data to obtain test results. Cylinder 2 14 and cylinder 3 15 drive roller 2 140 and roller 3 141 to separate from each other, so that synchronous belt 137 is in a loose state. Cylinder 5 100 moves cross bracket 102 toward the wheel. Open cylinder 101 inserts cylindrical support rods between the inner side of synchronous belt 137 and the outer side of the wheel. Open cylinder 101 opens synchronous belt 137. At the same time, fixing component 5 is loosened, the tested bicycle is unloaded, and then a new bicycle to be tested is moved for loading. The normal test process is completed.

[0052] ​The present invention realizes the synchronous detection of the dynamic balance performance and braking performance of the driving wheel of a children's bicycle on the same test equipment by setting a braking device, a pedal driving device and a driving wheel data testing device, without the need for handling and disassembly, saving test steps and time and improving test efficiency; by setting a plurality of adjustment grooves on the placement platform, the positions of the fixing components, the first fixing component, the braking device, the pedal driving device, the driving wheel data testing device and the spreading component can be adjusted according to the specifications of the children's bicycle to be tested, constituting a children's bicycle braking test equipment applicable to children's bicycles of different specifications. While improving applicability, the customization cost of the test equipment is saved; by setting a vibration damping mechanism composed of a suspension component and a spring damper to provide a double vibration damping structure of suspension vibration damping and mechanical vibration damping, the influence of external vibration on the children's bicycle braking test equipment is greatly reduced, the test accuracy is greatly improved, and the subsequent use safety of the children's bicycle is ensured; by setting a braking device to contact the braking operator and obtaining the pressure value data during braking through a pressure sensor, the braking device realizes automatic braking and obtains the pressure data during braking; by setting a pedal driving device to apply a driving force to the pedal and feedback the pressure value of the maximum driving pedal action to the control computer for processing and analysis; by setting a rotation detection device to drive the rotation of the wheel to be tested and obtain the rotation speed and torque values of the wheel to be tested during the emergency braking test, and feedback and transmit them to the control computer for processing to obtain the test result; by the control computer performing multi-data analysis on the pressure data of the braking device, the driving pressure value data of the pedal driving device, and the rotation speed and torque of the rotation detection device to obtain the test data result of the braking performance of the children's bicycle, improving the reliability of the braking performance of the children's bicycle; by setting a dynamic balance detection device to realize the dynamic balance test of the driving wheel, improving the test efficiency and the test accuracy of the dynamic balance performance of the wheel at the same time; by setting a fixing component to automatically clamp or loosen the handlebar, improving the feeding and fixing efficiency, and by setting a spreading component to realize the spreading of the synchronous belt, thus facilitating the placement of the wheel and improving the feeding efficiency, thereby improving the subsequent test efficiency.

[0053] The present invention is not limited to the above embodiments. Other children's bicycle braking test equipment and their test methods obtained by adopting the same or similar structures, devices, processes or methods as those of the above embodiments of the present invention are all within the protection scope of the present invention.

Claims

1. A children's bicycle brake test device, characterized in that: The children's bicycle brake test equipment comprises a test device and a control device, wherein the test device is arranged on one side of the control device, and a cable is arranged between the test device and the control device to form an electrical connection, the control device comprises a workbench, a control box, a control computer and a data printing device, the test device comprises a placement platform, a fixing component, a fixing component 1, a braking device, a pedal drive device, a driving wheel data test device and a spreading component, the braking device is arranged on one side of the placement platform, the driving wheel data test device is arranged on the other side of the placement platform, a vibration reduction mechanism is arranged at the bottom of the placement platform, the driving wheel data test device comprises a dynamic balance detection device and a rotation detection device, and the workbench is also provided with an air compressor; The placement platform includes a rectangular frame, platform 1, platform 2 and platform 3; the rectangular frame, platform 1, platform 2 and platform 3 are all composed of multiple aluminum profiles, and the aluminum profiles are all provided with adjustment slots. The platform 1, platform 2 and platform 3 are all fixed to the rectangular frame by multiple screws; The fixing assembly and the fixing assembly 1 are both arranged on the platform 2, and the fixing assembly comprises a base 1, a cylinder 1 and two quick clamps; The vibration reduction mechanism includes a plurality of vibration reduction components, each of which includes a suspension component and a spring damper. The suspension component is provided with a connection platform, and one end of the spring damper is arranged on the connection platform; the spring damper is provided with a spring; the connection platform includes a platform part, a connecting part and an embedded part, and each of the suspension components includes a support, a suspension magnet group 1 and a suspension magnet group 2; The dynamic balance detection device includes two infrared sensors and a data collector, and the two infrared sensors are electrically connected to the data collector; The rotation detection device includes a base six, a servo motor six, an encoder six, a sliding seat six and a pressure sensor six.

2. The children's bicycle brake test equipment according to claim 1, characterized in that: The platform one and the platform two are arranged at the two ends of the rectangular frame in a mirror-image manner, the platform three is arranged between the platform one and the platform two, and the multiple vibration reduction components are respectively arranged on the bottom surfaces of the four corners of the rectangular frame. The other end of the spring damper is threadedly connected to the bottom of the rectangular frame, and the spring damper is provided with a spring.

3. The children's bicycle brake test equipment according to claim 2, characterized in that: The bottom of the support is provided with a supporting foot, and the support is also provided with a cavity and an annular groove. The embedded part is arranged in the cavity and can move up and down in the cavity. The top surface of the support is also provided with multiple connecting shafts, and the multiple connecting shafts are provided with rotating pressure blocks.

4. The children's bicycle brake test equipment according to claim 3, characterized in that: The second suspension magnet group includes an annular magnet 1 and an annular magnet 2, the inner bottom surface of the concave cavity is provided with a groove, the first magnet is arranged in the groove, the second magnet is arranged on the bottom surface of the embedded part, the first annular magnet is arranged in the annular groove and fixed in the annular groove by a plurality of rotating pressing blocks, and the second annular magnet is arranged on the upper surface of the embedded part; The N pole of the magnet one is vertically upward toward the bottom surface of the embedded part, the N pole of the magnet two is vertically downward toward the inner bottom surface of the concave cavity, the N pole of the annular magnet one is vertically downward toward the upper surface of the embedded part, and the N pole of the annular magnet two is vertically upward toward the bottom surface of the platform part, and like-sex repulsion is formed between the magnet one and the magnet two, and like-sex repulsion is formed between the annular magnet one and the annular magnet two. Suspension vibration reduction is achieved between the connecting platform and the support through like-sex repulsion formed between the magnet one and the magnet two, and like-sex repulsion formed between the annular magnet one and the annular magnet two.

5. The children's bicycle brake test equipment according to claim 4, characterized in that: The braking device is arranged on the platform one, and the braking device includes a base, a bracket, a servo motor, a screw, a connecting block and a braking test assembly. The bracket is arranged on the base, the base is provided with a straight slot hole group, the bracket is provided with a mounting block, the servo motor is arranged on the mounting block, the screw is connected to the servo motor, the screw is provided with a screw nut, the connecting block is provided with a plurality of guide sleeves and a center hole, the bracket is provided with a plurality of guide columns, the connecting block passes through the screw and is threadedly connected with the screw nut, a plurality of guide sleeves are respectively sleeved outside the guide columns, the servo motor is used to drive the connecting block to move up and down along the guide column direction, the connecting block is provided with a connecting end, the braking test assembly is arranged on the connecting end, the braking test assembly includes a connecting plate, a pressure sensor and a pressure head, the pressure sensor is arranged on the connecting plate, and the pressure head is connected to the pressure sensor.

6. The children's bicycle brake test equipment according to claim 5, characterized in that: The two quick clamps are arranged on the base one, the base one is provided with a mounting plate one, the cylinder one is arranged on the mounting plate one, the two quick clamps are provided with handles, a connecting shaft one is provided between the two handles, the cylinder one is provided with a driving rod one, the driving rod one is provided with an annular connecting block, the annular connecting block is connected to the connecting shaft one to form a rotating hinge connection, the cylinder one is used to control the opening or clamping action of the two quick clamps, the fixing component one includes a base two and a limit plate two, the cylinder one is provided with a connecting pipe one, and the connecting pipe one is connected to the air compressor equipment.

7. The children's bicycle brake testing device according to claim 6, characterized in that: The pedal drive device includes a base three, a bracket three, a servo motor three, a lead screw three, a connecting block three and a drive test assembly. The bracket three is arranged on the base three, the base three is provided with a straight slot hole group three, the bracket three is provided with a mounting block three, the servo motor three is arranged on the mounting block three, the lead screw three is connected to the servo motor three, the lead screw three is provided with a lead screw nut three, the connecting block three is provided with a plurality of guide sleeves three and a center hole three, the bracket three is provided with a plurality of guide columns three, the connecting block three passes through the lead screw three and is threadedly connected with the lead screw nut three, a plurality of the guide sleeves three are respectively sleeved on the outside of the guide column three, the servo motor three is used to drive the connecting block three to move up and down along the guide column three, the connecting block three is provided with a connecting end three, the drive test assembly is arranged on the connecting end three, the drive test assembly includes a connecting plate three, a pressure sensor three and a pressure head three, the pressure sensor three is arranged on the connecting plate three, the pressure head three is connected to the pressure sensor three, and the pressure head three and the pressure sensor three are provided with a connecting rod three.

8. The children's bicycle brake testing device according to claim 7, characterized in that: The platform three is provided with a bracket four, and the bracket four includes a base four, two support rods and a top plate, and the top plate is fixed on the top of the two support rods. The two infrared sensors are provided with a magnetic base, and the two infrared sensors are respectively arranged on the outer sides of the support rods through the magnetic base. The data collector is arranged in the control box, the top plate is provided with a cylinder two, the base four is provided with a cylinder three, the cylinder two is provided with a driving rod two, the driving rod two is provided with a roller two, the cylinder three is provided with a driving rod three, and the driving rod three is provided with a roller three. The platform three is also provided with a bracket five, and the expansion assembly is arranged on the bracket five, and the expansion assembly includes a cylinder five and a plurality of expansion cylinders, the cylinder five is provided with a driving rod five, and the driving rod five is provided with a cross bracket, and the plurality of expansion cylinders are respectively arranged on each end of the cross bracket, and the plurality of expansion cylinders are provided with a cylindrical expansion rod, and the cylinder two, the cylinder three, the cylinder five and the plurality of expansion cylinders are provided with a connecting pipe two, and the connecting pipe two is connected to the air compressor.

9. The children's bicycle brake test equipment according to claim 8, characterized in that: The servo motor six is ​​arranged on the sliding seat six in a longitudinal manner, the servo motor six is ​​provided with a reducer six, the reducer six is ​​provided with a winding wheel, the sliding seat six is ​​provided with a corner block, the encoder six is ​​arranged on the corner block, the central axis of the servo motor six, the central axis of the encoder six, the central axis of the reducer six and the central axis of the winding wheel are all on the same axis, the winding wheel is provided with a synchronous belt, and the two outer sides of the synchronous belt are respectively in contact with the roller two and the roller three, the sliding seat six is ​​also provided with a cylinder seven and a baffle seven, the base seven is provided with a fixed seat seven, and the pressure sensor six is ​​fixed on the fixed seat seven and is arranged between the fixed seat seven and the baffle seven.

10. A testing method for implementing the children's bicycle brake testing device according to any one of claims 1 to 9, characterized in that: It includes the following steps : Step 1: Loading the bicycle to be tested, moving the bicycle to be tested to the fixing assembly and the fixing assembly 1 of the placing platform, the cylinder 1 of the fixing assembly drives two quick clamps to fix the handlebar of the bicycle to be tested on the platform 1 of the placing platform, the seat of the bicycle to be tested is placed on the fixing assembly 1, and the wheel to be tested of the automatic vehicle to be tested is placed on the inner side of the synchronous belt, the brake of the bicycle to be tested is set below the brake device, and the pedal position of the bicycle to be tested is set above the pedal drive device; Step 2: Perform a tension linkage action on the wheel to be tested, the multiple stretching cylinders are operated to make the synchronous belt close to the outside of the wheel to be tested, cylinder 5 pushes out the multiple stretching cylinders, so that the synchronous belt is sleeved on the outside of the wheel to be tested, cylinder 2 and cylinder 3 respectively drive roller 2 and roller 3 to approach each other, thereby tensioning the synchronous belt, so that the wheel to be tested, the synchronous belt and the winding wheel are linked and tensioned; Step 3: Perform dynamic balance test, the brake device is in the released state, the rotation detection device is in operation, driving the wheel to be tested of the tested bicycle to rotate, the dynamic balance detection device tests and collects dynamic balance data of the rotating wheel to be tested, and the rays emitted by the two infrared sensors are used to test both sides of the rotating wheel, and the rays are fed back to the data collector for processing. The processed data is transmitted to the control computer. When imbalance occurs, the infrared sensor will receive a refraction signal, and when the two sides of the rotating wheel are balanced, the infrared sensor will not receive a refraction signal; after the dynamic balance data test is completed, the next step of testing is carried out; Step 4: Perform a test action of the pedal and brake pressure values, the brake device acts to apply pressure to the brake to perform a braking action, the pressure sensor transmits the applied pressure data to the control computer, the pedal drive device applies pressure to the pedal of the bicycle to be tested, the pressure sensor 3 transmits the applied pressure data to the control computer, after the pressure is applied, the encoder 6 of the rotation detection device detects whether the synchronous belt rotates, after the rotation is detected, the maximum driving pressure value of the pedal drive device is obtained, and the brake pressure value of the brake device is obtained, and the maximum driving pressure value and the brake pressure value are fed back to the control computer; Step 5: Perform the emergency brake data test action, first release the brake device, the servo motor 6 drives the wheel to be tested to rotate, the brake device is actuated to brake, and the wheel to be tested gradually stops rotating. The encoder 6 obtains the actual speed data of the wheel to be tested from the start of braking to the stop of the wheel to be tested, and feeds back the actual speed data to the control computer; Step 6: The control computer organizes and processes multiple groups of data to obtain the test results. Cylinder 2 and cylinder 3 respectively drive roller 2 and roller 3 to separate from each other, so that the synchronous belt is in a loose state. Cylinder 5 moves the cross bracket toward the wheel. The expansion cylinder inserts the cylindrical support rod between the inner side of the synchronous belt and the outer side of the wheel. The expansion cylinder expands the synchronous belt and the fixing components are loosened at the same time. The tested bicycle is unloaded, and then the new bicycle to be tested is moved for loading. The normal test process is completed.

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