Motorcycle protection tool impact wear resistance test device and method

Abstract

The invention discloses a motorcycle protection appliance impact wear resistance testing device, which comprises a support module, a road surface simulation module, a protection appliance simulation module and an inertia simulation module, and is characterized in that the protection appliance simulation module and the inertia simulation module are respectively provided with a first placement disc and a second placement disc; under the pushing force of a pushing assembly, the first containing disc can move upwards to be meshed with the second containing disc and rotate along with the second containing disc, so that the protective tool sample clamping assembly has an initial speed, and after the pushing assembly withdraws the pushing force, the protective tool sample clamping assembly can clamp the protective tool sample. And the first placement disc freely falls, so that the protection tool sample clamping assembly falls on the pavement simulation plate and continuously rotates to the speed of 0 under the action of inertia. The invention further claims to protect a test method of the impact wear resistance test device for the motorcycle protection appliance, friction and deceleration dynamic states of a human body and a road surface in a real accident scene can be accurately simulated, and test data is more accurate.

Description

Technical Field

[0001] The present invention relates to the field of testing equipment, and more specifically, to a device and method for testing the impact wear resistance of motorcycle protective equipment. Background Art

[0002] In contemporary society, with the change of the pace of life and people's pursuit of personalized travel experience, the craze for motorcycle riding and motorcycle travel is rising. More and more people choose motorcycles as a means of travel. Compared with closed means of transportation such as cars, motorcycle riders' bodies are almost completely exposed and lack a full range of physical protection barriers. Once encountering an emergency, such as emergency braking, collision or skidding, the rider is very likely to have violent friction and collision with the road surface and obstacles, thus suffering serious physical injuries. According to relevant statistics, among all types of traffic accidents, the proportion of serious injuries or even disabilities caused by motorcycle accidents far exceeds that of other motor vehicle accidents, and cases of aggravated injuries due to lack of effective protective equipment are not uncommon. The characteristics of motorcycle riding determine that it is naturally accompanied by a higher risk of accidents.

[0003] Traditional cycling protection methods are relatively limited. Some riders only wear simple helmets and ignore the protection of other parts of the body. Most of their clothing is for daily wear and has no special protective properties. As the popularity of cycling increases, the industry has gradually realized the urgency of strengthening protective equipment. Modern protective clothing has emerged, but whether its protective performance can match the stringent requirements of real accident scenarios urgently needs to be verified by scientific and rigorous testing methods.

[0004] Existing testing equipment for motorcycle riding protective clothing only stays at static material performance testing, such as simply considering basic indicators such as the wear resistance and tear strength of clothing fabrics, but ignores the complex and changeable stress conditions in dynamic accident scenarios. Real motorcycle accidents often occur on roads with different road conditions and at varying speeds. Existing tests make it difficult to restore these real factors, resulting in a large deviation between the test results and the actual protective effect. It is impossible to provide accurate and reliable references for riders to purchase high-quality protective equipment, and it is difficult to help manufacturers improve their products in a targeted manner. In this context, it is imperative to develop a set of testing methods for motorcycle riding protective clothing that fits reality and accurately simulates real accident scenarios. Summary of the invention

[0005] An object of the present invention is to solve at least the above problems and to provide at least the advantages which will be described hereinafter.

[0006] Another object of the present invention is to provide a motorcycle protective gear impact wear resistance testing device, which can accurately simulate the friction and deceleration dynamics between the human body and the road surface in a real accident scene, and the test data is more accurate.

[0007] In order to achieve these purposes and other advantages according to the present invention, a motorcycle protective gear impact wear resistance testing device is provided, comprising: A support module having at least a mounting surface formed by four supports disposed away from the ground; A road surface simulation plate is detachably arranged on the mounting surface, and a through groove is provided at the center of the road surface simulation plate; A protective gear simulation module, comprising a first mounting plate sleeved on a motor shaft and located above the road simulation plate, and a plurality of protective gear sample clamping assemblies distributed in a circumferential array on the first mounting plate; An inertial simulation module, comprising a second mounting plate sleeved on the motor shaft and rotating with the motor shaft, and a plurality of counterweights distributed in a circumferential array on the second mounting plate, wherein the second mounting plate is located above the first mounting plate and the protective equipment sample clamping assembly is spaced apart from the counterweights; Wherein, under the thrust of a pushing component, the first mounting plate can move upward to engage with the second mounting plate and rotate with the second mounting plate so that the protective equipment sample clamping assembly has an initial velocity. After the pushing component withdraws the thrust, the first mounting plate falls freely so that the protective equipment sample clamping assembly falls on the road simulation board and continues to rotate to a speed of 0 under the action of inertia.

[0008] Preferably, any protective tool sample clamping assembly is arranged at a free end of a first connecting rod extending radially along the first mounting plate, and any protective tool sample clamping assembly comprises: A sample holder, which is arranged at the bottom of the first connecting rod through a fixing block; A sample clamp cover, which is connected to the bottom of the sample clamp seat and has a slot for the sample clamp seat to be inserted; The middle part of the slot passes through the sample fixture cover, so that the protective tool sample arranged between the sample fixture seat and the sample fixture cover has a portion flush with the bottom of the sample fixture cover.

[0009] Preferably, any counterweight block can be movably arranged below the second connecting rod extending radially along the second mounting plate, wherein any second connecting rod is provided with a through long groove extending along its length direction, and the counterweight block is provided with a bolt hole so that the counterweight block can be fixed by bolts below any position of the through long groove.

[0010] Preferably, the specific structure for achieving the engagement of the first mounting plate and the second mounting plate is as follows: a flower shaft and a bearing sleeved on the motor shaft are provided at the center of the first mounting plate from top to bottom, the flower shaft is connected to the outer ring of the bearing, and a flower tooth cooperating with the flower shaft is provided at the center of the second mounting plate.

[0011] Preferably, the second mounting tray is provided with a plurality of retractable columns passing through the second mounting tray, and the retractable columns can movably penetrate into the first mounting tray.

[0012] Preferably, the pushing assembly is located below the mounting surface and is arranged below the first mounting plate, and comprises: A mounting ring, which is sleeved on the motor shaft and connected to the bottom of the bearing outer ring, and the mounting ring is provided with a pair of fixed shafts arranged along its radial direction; A U-shaped rod, the vertical portion of which is provided with a long slot for the fixed shaft to pass through, so that the mounting ring is clamped in the U-shaped rod; A pressure rod has one end connected to the horizontal part of the U-shaped rod, a hinge shaft in the middle, and a cylinder driving the other end of the pressure rod to move up and down, so that the mounting ring moves up and down with one end of the pressure rod, thereby driving the first mounting plate to move up and down.

[0013] Preferably, the pushing assembly also includes a limit plate, which reciprocates in a direction perpendicular to the pressure rod through a linear motor, and the limit plate has at least a first state located between the pressure rod and the linear motor mounting frame, and a second state away from the pressure rod in the horizontal direction, and the linear motor is installed on a mounting frame arranged at the bottom of the bracket close to the pressure rod.

[0014] Preferably, the motorcycle protective gear impact wear resistance testing device further comprises a controller, and the motor, the linear motor and the solenoid valve of the cylinder are all electrically connected to the controller.

[0015] The present invention further claims protection for the testing method of the impact wear resistance testing device for motorcycle protective gear, comprising: Step 1: Lay the sample of the protective gear to be tested in the slot of the sample fixture cover, and connect the sample fixture cover to the sample fixture seat so that the sample of the protective gear to be tested has a portion flush with the bottom of the sample fixture cover; Step 2: Start the motor to rotate the second mounting plate, and start the cylinder to quickly apply thrust to the push assembly to push the first mounting plate upward. The first mounting plate is precisely meshed with the second mounting plate and rotates with the second mounting plate. At this time, the limit plate is located between the pressure rod and the linear motor mounting frame under the action of the linear motor; Step 3: After the first mounting plate reaches a preset speed, the motor is turned off and the limiting plate is driven horizontally away from the pressure rod by the linear motor, and the other end of the pressure rod moves upward, so that the mounting ring moves downward. The first mounting plate falls on the sample simulation plate under the action of gravity and continues to rotate until the speed is 0 under the action of inertia; Step 4: Remove the sample of protective gear to be tested and check its wear degree.

[0016] The present invention has at least the following beneficial effects: The support module, road simulation module, protective gear simulation module and inertia simulation module of the motorcycle protective gear impact and wear resistance testing device provided by the present invention accurately reproduce the impact and wear conditions of the protective gear in a motorcycle accident scene through the coordinated operation of the support module, road simulation board, protective gear simulation module and inertia simulation module. The road simulation board is detachable, which is convenient for replacing simulated road surfaces with different textures and materials. Together with the protective gear sample clamping component, it can simulate a variety of actual road conditions and falling postures, so that the test is infinitely close to real riding accidents, and the obtained test data is of great reference value.

[0017] Other advantages, objectives and features of the present invention will be embodied in part through the following description, and in part will be understood by those skilled in the art through study and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic structural diagram of a motorcycle protective gear impact wear resistance testing device in one technical solution of the present invention; Figure 2 It is a schematic diagram of the arrangement of the protective equipment simulation module and the inertia simulation module in another technical solution of the present invention; Figure 3 It is a top view schematic diagram of the impact wear resistance testing device for motorcycle protective gear in another technical solution of the present invention; Figure 4 It is a side schematic diagram of the impact wear resistance testing device for motorcycle protective gear in another technical solution of the present invention; Figure 5 It is a structural schematic diagram of the protective equipment sample clamping assembly in another technical solution of the present invention; Among them, 1. the first connecting rod; 2. the road simulation board; 3. the bracket; 4. the protective equipment sample clamping assembly; 5. the fixed plate; 6. the limit plate; 7. the pressure rod; 8. the photoelectric controller; 9. the controller; 10. the motor; 11. the fixed shaft; 12. the first mounting plate; 13. the flower axis; 14. the second mounting plate; 15. the motor shaft; 16. the second connecting rod; 17. the counterweight; 18. the tachometer; 19. the retractable column; 20. the articulated shaft mounting seat; 21. the mounting ring; 22. the U-shaped rod; 23. the articulated shaft; 41. the sample clamp seat; 42. the sample clamp cover; 43 the fixed block. DETAILED DESCRIPTION

[0019] The present invention is further described in detail below in conjunction with the accompanying drawings so that those skilled in the art can implement the invention with reference to the description.

[0020] It should be understood that the terms such as “having”, “including” and “comprising” used herein do not exclude the existence or addition of one or more other elements or combinations thereof.

[0021] like Figures 1 to 5 As shown, the present invention provides a motorcycle protective equipment impact wear resistance testing device, comprising: A support module having at least a mounting surface formed by four supports 3 disposed away from the ground; A road surface simulation plate 2 is detachably arranged on the mounting surface, and a through groove is provided at the center of the road surface simulation plate 2; A protective gear simulation module, comprising a first mounting plate 12 sleeved on a motor shaft 15 and located above the road simulation plate 2, and a plurality of protective gear sample clamping assemblies 4 distributed in a circumferential array on the first mounting plate 12; An inertial simulation module, comprising a second mounting plate 14 sleeved on the motor shaft 15 and rotating with the motor shaft 15, and a plurality of counterweights 17 circumferentially arrayed on the second mounting plate 14, wherein the second mounting plate 14 is located above the first mounting plate 12, and the protective equipment sample clamping assembly 4 is spaced apart from the counterweights 17; Among them, under the thrust of a pushing component, the first mounting plate 12 can move upward to engage with the second mounting plate 14 and rotate with the second mounting plate 14 so that the protective equipment sample clamping component 4 has an initial velocity. After the pushing component withdraws the thrust, the first mounting plate 12 falls freely so that the protective equipment sample clamping component 4 falls on the road simulation board 2 and continues to rotate to a speed of 0 under the action of inertia.

[0022] In the above technical solution, the motorcycle protective gear impact wear test device includes a bracket module, a road simulation module, a protective gear simulation module and an inertia simulation module, wherein the bracket module has at least a mounting surface formed by four brackets 3, and the mounting surface is at a certain distance from the ground, so that there is a certain installation space above and below the mounting surface, such as Figure 1As shown, the present invention shows a structure of the bracket module, including a support bracket forming a frame, and four brackets 3 forming a mounting surface, wherein the mounting surface is located in the middle of the support bracket, so that there is a certain installation space above and below the mounting surface, and a fixed cross frame can also be set on the top of the frame structure formed by the support bracket to assist in the installation of components. The pavement simulation board 2 is arranged on the mounting surface to simulate actual pavement conditions. In special test requirements, potholes and other features can be arranged on the pavement simulation board 2 to simulate special pavement conditions. A through groove is arranged in the middle of the pavement simulation board 2, through which the space above the pavement simulation board 2 is connected with the space below. The pavement simulation board 2 is detachably arranged on the mounting surface formed by four brackets 3. One implementation method is that the pavement simulation board 2 is directly mounted on the mounting surface formed by four brackets 3. Another implementation method is that the four brackets 3 are provided with a snap-on structure, and the pavement simulation board 2 is provided with a snap-on structure adapted to the snap-on structure. The pavement simulation board 2 is detachably arranged on the mounting surface, which is conducive to the subsequent replacement of pavement simulation boards 2 with different textures and materials according to different test requirements. The outer diameter of the pavement simulation board 2 is at least 100 cm, and the thickness is at least 5 cm. If the through groove is circular, its maximum radius is 80 cm In the above technical solution, the protective equipment simulation module includes a motor 10 arranged below the mounting surface, a first mounting plate 12 sleeved on the motor shaft 15, and more than ten protective equipment sample clamping components 4 distributed in a circumferential array on the first mounting plate 12. The motor shaft 15 of the motor 10 is vertically arranged upward, and a tachometer 18 is arranged at the end of the motor 10 away from the motor shaft 15. The top of the motor shaft 15 is connected to the crossbar fixed cross frame arranged on the top of the support bracket through a fixed coupling ( Figure 1 , Figure 4 As can be seen, the specially made first mounting plate 12 is sleeved on the motor shaft 15. Around the circumference of the first mounting plate 12, a plurality of protective equipment sample clamping assemblies 4 are installed at equal intervals through connectors. The protective equipment sample clamping assemblies 4 are designed for fabric samples of protective clothing. They can clamp one layer of fabric or multiple layers of fabric to simulate the composition of protective clothing. Multiple protective equipment sample clamping assemblies 4 can test multiple samples at the same time, thereby improving the accuracy of the test.

[0023] In the above technical solution, the inertia simulation module is also mounted on the motor shaft 15, which includes a second mounting plate 14 arranged above the first mounting plate 12. The second mounting plate 14 is generally made of a heavier material, which is conducive to providing stable inertia. A plurality of counterweights 17 are installed at equal intervals on the circumference of the second mounting plate 14 through connecting parts. Preferably, the number of the counterweights 17 is consistent with the number of the protective gear sample clamping assemblies 4, and the counterweights 17 and the protective gear sample clamping assemblies 4 are staggered and distributed to ensure the dynamic balance of the device during rotation. Under the thrust of a pushing component, the first mounting plate 12 can move upward to engage with the second mounting plate 14 and rotate with the second mounting plate 14 so that the protective gear sample clamping component 4 has a stable initial velocity. After the pushing component withdraws the thrust, the first mounting plate 12 falls freely so that the protective gear sample clamping component 4 falls on the road simulation board 2 and continues to rotate to a speed of 0 under the action of inertia, so as to accurately simulate the friction and deceleration dynamics between the human body and the road in a real accident scene, and the test data is more accurate.

[0024] In the above technical solution, the motorcycle protective equipment impact wear resistance testing device has at least the following beneficial effects: 1. Through the coordinated operation of the bracket module, the road simulation board 2, the protective equipment simulation module and the inertia simulation module, the impact and wear conditions of the protective equipment in the motorcycle accident scene are accurately reproduced. The road simulation board 2 is detachable, which is convenient for replacing simulated roads with different textures and materials. In conjunction with the protective equipment sample clamping component 4, it can simulate a variety of actual road conditions and falling postures, making the test infinitely close to real riding accidents, and the test data obtained is of great reference value; 2. Multiple protective gear sample clamping components 4 are distributed in the array on the first mounting plate 12, allowing multiple samples to be fixed at the same time for testing. Compared with a single sample test, the test efficiency is greatly improved and the test cycle is shortened. For example, if different brands or styles of protective gear are fixed on multiple protective gear sample clamping components 4, products with poor protective performance can be quickly screened out, which is also helpful to compare the advantages and disadvantages of protective gear of different brands and styles, and accelerate the optimization and iteration of industry products; if multiple samples of the same protective gear are fixed on multiple protective gear sample clamping components 4, they can be used as data for multiple measurements to improve the accuracy of the test; 3. With the help of the inertial simulation module and the push component, the second mounting plate 14 is first rotated at high speed to store energy, and then the first mounting plate 12 and the sample are given an accurate initial velocity through the engagement of the two. This design can simulate car crashes at different speed levels, from low-speed scratches to high-speed collisions, to meet diverse testing needs, and ensure that the impact and wear resistance of protective equipment in various preset speed scenarios can be accurately evaluated; 4. The first mounting plate 12 is in free fall. After the protective equipment sample hits the road simulation plate 2, it naturally decelerates by inertia until it stops. No additional unreasonable braking intervention is applied during the whole process. This truly reflects the ability of the protective equipment to buffer and absorb energy in actual accidents. The acquired data can truthfully present the protective effect of the protective equipment, helping manufacturers to improve product design in a targeted manner. 5. The second mounting plate 14 in the inertial simulation module is equipped with a plurality of counterweights 17 to store sufficient moment of inertia, providing stable and strong initial kinetic energy for the protective equipment samples, ensuring that the starting energy of each test is consistent, reducing experimental errors, and improving the reliability and repeatability of the test results; 6. The bracket module is composed of four brackets 3 to build a stable mounting surface, which not only lays a solid foundation for the entire device, but also facilitates the upgrading and transformation of the device with its open architecture. Whether it is adding new sensors or fine-tuning the layout of each module, it is relatively easy. At the same time, it can also adapt to protective equipment of different sizes and types, enhancing the versatility of the device; 7. The impact wear resistance testing device for motorcycle protective gear provided by the present invention provides a scientific and accurate testing method for motorcycle protective gear. Based on the test data, manufacturers can optimize product materials and structures to improve protective performance. When purchasing, consumers can also refer to more authoritative test results and choose high-quality protective gear, thereby reducing the risk of injury during riding and comprehensively improving riding safety.

[0025] In the above technical solution, a specific method of using the motorcycle protective equipment impact wear resistance testing device is as follows: Preparation before testing: fix the motorcycle protective gear samples to be tested on multiple protective gear sample clamping assemblies 4 respectively, carefully check whether the protective gear sample clamping assemblies 4 are clamped to prevent the samples from loosening and falling off during the test, and set the speed parameters of the motor 10 according to the test standards and simulation scenario requirements. The preferred range of the speed parameters of the motor 10 is 140~720r / min, so as to give the protective gear samples a suitable initial velocity to simulate the impact state of a medium-speed fall. If you need to simulate the impact state of a high-speed fall, the speed parameters of the motor 10 can be adjusted to a larger value.

[0026] Test process: Turn on the motor 10, the motor shaft 15 drives the second mounting plate 14 to rotate rapidly, and at the same time, the push component quickly applies thrust to push the first mounting plate 12 upward. In a very short time, the first mounting plate 12 and the second mounting plate 14 are precisely meshed and rotate with it. As the speed steadily increases and reaches the preset speed, the protective gear sample clamping component 4 instantly obtains the set initial speed, just like the initial kinetic energy obtained by the body and protective gear of a motorcycle rider when he falls off the motorcycle; after the push component withdraws the thrust, the first mounting plate 12 falls freely under the action of gravity, and the protective gear sample clamping component 4 falls hard on the road simulation board 2. Under the action of inertia, the sample will continue to rotate on the simulation board. The protective equipment is subjected to movement and friction, and produces severe friction and impact with the surface of the road simulation plate 2, simulating the impact force and wear process of the protective equipment in a real accident scene. During this period, various sensors (such as impact force sensors, friction force sensors) can be set to collect data in real time, record key parameters such as the impact force and friction duration of the protective equipment, collect signals from various sensors, and accurately capture the impact force peak, average friction, energy loss and other data of the protective equipment sample from contact with the road simulation plate 2 to stopping the movement, so as to form a detailed original data set. Regarding the setting of various sensors, this application does not make specific elaboration; after the test is completed, the wear of the protective equipment samples is statistically analyzed and recorded.

[0027] like Figures 1 to 5 As shown, in one of the technical solutions, any protective tool sample clamping assembly 4 is arranged at the free end of the first connecting rod 1 extending radially along the first mounting plate 12, and any protective tool sample clamping assembly 4 includes: A sample holder 41, which is arranged at the bottom of the first connecting rod 1 through a fixing block 43; A sample clamp cover 42, which is connected to the bottom of the sample clamp base 41 and has a slot for the sample clamp base 41 to be inserted; The middle portion of the slot passes through the sample fixture cover 42 , so that the protective tool sample disposed between the sample fixture seat 41 and the sample fixture cover 42 has a portion flush with the bottom of the sample fixture cover 42 .

[0028] In the above technical solution, the protective equipment sample is connected to the first mounting plate 12 through the first connecting rod 1. The first connecting rod 1 should be made of high-strength material, and according to the design requirements, one end of the first connecting rod 1 is precisely connected to the first mounting plate 12 along the radial direction of the first mounting plate 12 to ensure that each first connecting rod 1 is evenly distributed on the circumference of the first mounting plate 12. Any protective equipment sample clamping assembly 4 includes a sample clamp seat 41 and a sample clamp cover 42. The sample clamp seat 41 is inserted into the sample clamp cover 42. The bottom surface of the sample clamp cover 42 is preferably made of SBR styrene-butadiene rubber, such as Figure 5As shown, one implementation method of fixing the sample holder 41 and the sample fixture cover 42 is as follows: the outer edges of the sample holder 41 and the sample fixture cover 42 are provided with matching bolt holes, so that the sample holder 41 and the sample fixture cover 42 are fixed by bolts. The motorcycle protective gear sample is arranged between the sample holder 41 and the sample fixture cover 42, and the protective gear sample has a portion that is flush with the bottom of the sample fixture cover 42, so that the protective gear sample can rub against the road simulation plate 2.

[0029] In the above technical solution, the sample holder 41 is arranged at the bottom of the free end of the first connecting rod 1 through a specific fixing block 43, and the fixing block 43 is detachably connected to the sample holder 41 through bolts, so as to facilitate the replacement of the sample holder 41 and the sample fixture cover 42.

[0030] In the above technical solution, the sample clamp seat 41 is connected to the first connecting rod 1 by means of a fixing block 43 to construct a stable mechanical support structure. The sample clamp cover 42 and the sample clamp seat 41 are tightly plugged into the slot. The two work together to firmly fix the protective equipment in the clamping assembly. Even in the event of high-intensity impact and severe wear, the sample position can be guaranteed to be stable, laying the foundation for obtaining accurate test data; the protective equipment sample has a part that is flush with the bottom of the sample clamp cover 42. This design cleverly restores the contact moment between the protective equipment and the road surface in a real riding scene. When conducting an impact and wear resistance test, the flush Some will first hit and rub the road simulation board 2, accurately reproducing the starting point of force of the protective equipment in the actual accident, making the test data more in line with the actual usage conditions, and improving the reference value of the test results for evaluating the actual protective effectiveness of the protective equipment; each component has a modular design, and the sample clamp seat 41, the clamp cover and the fixing block 43 are relatively independent and closely matched. If a component is damaged during long-term and frequent testing, such as cracks in the sample clamp cover 42, it can be disassembled and replaced separately without replacing the entire protective equipment sample clamping assembly 4, which reduces the maintenance cost and time and ensures the continuous and efficient operation of the test device.

[0031] like Figures 1 to 4As shown, in one of the technical solutions, any counterweight 17 is movably arranged below the second connecting rod 16 extending radially along the second mounting plate 14, wherein any second connecting rod 16 is provided with a through long groove extending along its length direction, and the counterweight 17 is provided with a bolt hole so that the counterweight 17 can be fixed below any position of the through long groove by bolts. The counterweight 17 is movably arranged relative to the second connecting rod 16, and one way to achieve it is as follows: any second connecting rod 16 is provided with a through long groove extending along its length direction, and the counterweight 17 is provided with a bolt hole so that the counterweight 17 can be fixed below any position of the through long groove by bolts. During the test, if it is found that the inertia simulation effect does not meet expectations, the position of the counterweight 17 can be adjusted during the test gap. By loosening the nut, the counterweight 17 is repositioned in the through long groove to change the rotational inertia of the device and optimize the test conditions.

[0032] In the above technical solution, a high-strength material is selected as the second connecting rod 16, which can ensure that during the operation of the entire test device, the second connecting rod 16 has sufficient strength and rigidity to withstand large loads and impact forces. When conducting an impact wear test on motorcycle protective gear, the device will generate strong vibration and inertial force, especially at the moment when the second mounting plate 14 rotates at high speed, the first mounting plate 12 interacts with the second mounting plate 14, and the protective gear sample hits the road simulation plate 2. The high-strength second connecting rod 16 can effectively avoid deformation or damage due to force, thereby ensuring the safety and reliability of the test; the second connecting rod 16 is accurately connected along the radial direction of the second mounting plate 14, and is evenly distributed in the The circumference of the second mounting plate 14 is helpful to achieve the dynamic balance of the device. When the device is running, each counterweight 17 will generate centrifugal forces in different directions. The evenly distributed second connecting rods 16 can evenly distribute these centrifugal forces on the entire device, avoiding eccentric rotation of the device due to uneven distribution of the counterweight 17, preventing additional vibration and unstable factors, ensuring the stability of the test device during high-speed rotation, reducing measurement errors caused by vibration, and improving the accuracy of test data; the first connecting rods 1 and the second connecting rods 16 are the same in number and are arranged at staggered intervals. On the one hand, the space above the second mounting plate 14 can be more reasonably utilized to avoid interference and collision between components, making the entire device structure more compact. This compactness The layout mode enables the device to integrate more functional components in a limited space, improves space utilization, and reduces the overall size of the device. On the other hand, the staggered interval arrangement mode functionally helps to optimize the mechanical properties of the test device. When the protective equipment sample obtains the initial velocity and the free fall process, the staggered structure can disperse the inertial force and impact force inside the device to avoid local stress concentration and reduce the risk of component damage. At the same time, the first mounting plate 12 and the second mounting plate 14 are subjected to more uniform force during the rotation process, further improving the stability and durability of the device; the uniform distribution and high strength characteristics of the second connecting rod 16, combined with the adjustable position counterweight block 17, can accurately simulate different inertial scenarios; according to According to the needs of the test, the position of the counterweight 17 on the second connecting rod 16 can be adjusted or the counterweight 17 of different weights can be replaced to accurately control the rotational inertia of the device to simulate the inertial conditions under various motorcycle riding conditions. The inertial conditions from low-speed driving to high-speed driving can be well simulated, so that the impact and wear resistance of motorcycle protective gear under different working conditions can be tested more comprehensively and meticulously. The special design of the counterweight 17 of the impact and wear resistance test device for motorcycle protective gear of the present application provides the test device with good versatility and flexibility. By adjusting the number of the second connecting rod 16 and the position and weight of the counterweight 17, it can adapt to the testing of motorcycle protective gear of different types and performance requirements.For testing of different protective gear, the configuration of the second connecting rod 16 and the counterweight block 17 can be adjusted to meet the testing requirements, providing a wider range of testing conditions for product research and development, quality control and performance evaluation, and promoting the development of the protective gear industry.

[0033] like Figure 2 As shown, in one of the technical solutions, the specific structure for achieving the meshing of the first mounting plate 12 and the second mounting plate 14 is as follows: the center of the first mounting plate 12 is provided with a flower shaft 13 and a bearing sleeved on the motor shaft 15 from top to bottom, the flower shaft 13 is connected to the outer ring of the bearing, and the center of the second mounting plate 14 is provided with a flower tooth matched with the flower shaft 13. It should be understood that the flower shaft 13 has a portion protruding from the upper surface of the first mounting plate 12 in the vertical direction, and the flower shaft 13 is made of high-strength wear-resistant metal material, such as chromium-molybdenum alloy steel, and is precisely processed by a CNC lathe and a milling machine. The outer diameter of the flower shaft 13 should be precisely matched with the inner diameter of the center hole of the first mounting plate 12 to ensure the tightness of the installation. At the same time, the spline part of the flower shaft 13 needs to be processed strictly according to the design standards to ensure the tooth shape, size and surface finish of the spline, and its dimensional tolerance is controlled within a very small range to ensure good meshing with the flower teeth on the second mounting plate 14; the selection of the bearing should be based on the load-bearing capacity and speed requirements of the device, and high-precision rolling bearings should be selected. Considering the operating characteristics of the device, deep groove ball bearings or angular contact ball bearings are preferred to ensure that the bearing has sufficient radial and axial load-bearing capacity. The inner ring of the bearing is interference-fitted with the motor shaft 15, and the outer ring is connected to the flower shaft 13. During installation, a professional press is used to gently press the bearing onto the flower shaft 13 to ensure uniform force during the press-fitting process and avoid damage to the bearing; for the second mounting plate 14, the flower tooth part in the center is processed using a CNC machining center to ensure the size, shape and position accuracy of the flower teeth. The tooth shape of the flower teeth should match the spline tooth shape of the flower shaft 13, and the matching clearance between the two is controlled within the design requirements to ensure accurate power transmission during the meshing process, while reducing vibration and impact caused by the clearance. After the tooth processing is completed, the tooth needs to be surface treated, such as carburizing and quenching, to improve the hardness and wear resistance of the tooth to ensure that there will be no excessive wear due to friction during multiple meshing and separation processes, thereby extending its service life.

[0034] In the above technical solution, the meshing structure of the flower axis 13 and the flower teeth realizes the precise power transmission between the first mounting plate 12 and the second mounting plate 14. When the second mounting plate 14 rotates driven by the motor shaft 15, the rotational power is transmitted to the first mounting plate 12 through the precise cooperation of the flower teeth and the flower axis 13, ensuring that the first mounting plate 12 and the protective equipment sample clamping assembly 4 thereon obtain accurate rotation speed and kinetic energy, avoiding the problems of slipping and power loss that may occur in the traditional connection method, and improving the efficiency and accuracy of the test device; the structural design of the flower axis 13 and the flower teeth, combined with the selected high-strength material, makes the meshing of the two have a higher load-bearing capacity. During the test, whether it is the protective equipment sample in the initial Whether in the speed acquisition stage or the subsequent free fall impact stage, it can withstand large torque and axial and radial forces, ensuring that the device can operate stably under high loads and will not cause structural damage or power transmission failure due to excessive force, providing reliable power connection guarantee for the test; due to the precise matching of the flower shaft 13 and the flower teeth, the gap and looseness in the transmission process are reduced, which can effectively reduce the vibration and noise during the operation of the device; when the test device performs high-speed rotation and impact tests, the stable operation state helps to accurately measure the stress conditions of the protective equipment samples, avoid vibration interference with the measurement data, and improve the accuracy and reliability of the test data; and the meshing structure is relatively simple, and it is easy to disassemble and repair once a problem occurs.

[0035] In one of the technical solutions, the second mounting plate 14 is provided with a plurality of retractable columns 19 passing through the second mounting plate 14, and the retractable columns 19 can be movably inserted into the first mounting plate 12. The retractable columns 19 can be made of high-strength aluminum alloy or stainless steel to ensure that they have sufficient strength and durability. According to the design requirements, the retractable column 19 is composed of an inner column and an outer column, and the inner column can slide freely in the outer column to achieve the telescopic function. The outer column of the retractable column 19 is fixed to the second mounting plate 14 by bolts, nuts or flange connections. For the retractable column 19 with flange connection, ensure that the flange surfaces are tightly fitted, and use a sealing gasket to ensure the sealing of the connection to prevent dust or foreign matter from entering during the test and affecting the performance of the retractable column. In the process of the pushing component pushing the first mounting plate 12 to move upward and engage with the second mounting plate 14, the retractable column 19 can play a role of guidance and auxiliary support. When the first mounting plate 12 moves upward, the inner column of the retractable column 19 will retract and extend with the movement of the first mounting plate 12, while ensuring that the vertical movement trajectory of the first mounting plate 12 is stable, avoiding the first mounting plate 12 from being offset or tilted, ensuring that the first mounting plate 12 is smoothly engaged with the second mounting plate 14, and allowing the protective equipment sample clamping component 4 to obtain an accurate initial velocity. When the protective equipment sample hits the road simulation board 2, the retractable column 19 only passes through the first mounting plate 12, and the first mounting plate 12 can be detached from the retractable column 19. A plurality of retractable columns 19 connect the first mounting plate 12 and the second mounting plate 14 together, providing additional support and guidance for the first mounting plate 12. During the movement of the first mounting plate 12, especially when the pushing component pushes the first mounting plate 12 to engage with the second mounting plate 14, the retractable column 19 can effectively prevent the first mounting plate 12 from shaking, deflecting and other unstable phenomena, thereby ensuring the overall stability of the device, thereby ensuring that the protective equipment sample is always in a stable state of motion during the test, thereby improving the accuracy and repeatability of the test.

[0036] like Figures 1 to 4 As shown, in one of the technical solutions, the pushing assembly is located below the mounting surface and is arranged below the first mounting plate 12, and includes: A mounting ring 21, which is sleeved on the motor shaft 15 and connected to the bottom of the bearing outer ring, and a pair of fixed shafts 11 are arranged on the mounting ring 21 along its radial direction; A U-shaped rod 22, the vertical portion of which is provided with a long slot for the fixed shaft 11 to pass through, so that the mounting ring 21 is clamped in the U-shaped rod 22; The pressure rod 7 has one end connected to the horizontal part of the U-shaped rod 22, a hinge shaft 23 is provided in the middle, and a cylinder is provided at the other end to drive the other end of the pressure rod 7 to move up and down, so that the mounting ring 21 moves up and down with one end of the pressure rod 7, thereby driving the first mounting plate 12 to move up and down.

[0037] In the above technical solution, the pushing assembly is arranged under the mounting surface, and includes a mounting ring 21 sleeved on the motor shaft 15, a U-shaped rod 22 arranged on the outer periphery of the mounting ring 21 and a pressure rod 7 connecting the U-shaped rod 22. The mounting ring 21 is made of a metal material with suitable strength and hardness, such as carbon steel. The mounting ring 21 is connected to the bottom of the outer ring of the bearing, that is, the flower shaft 13 and the mounting ring 21 are respectively arranged at both ends of the bearing. Due to the connection with the bearing, the mounting ring 21 does not rotate with the rotation of the motor shaft 15. The outer surface of the mounting ring 21 is provided with a fixed shaft 11 to ensure that the fixed shaft 11 is perpendicular to the mounting ring 21. The U-shaped rod 22 is arranged on the outside of the mounting ring 21 and connected to the fixed shaft 11. A long groove for the fixed shaft 11 to pass through is processed at an appropriate position of the vertical part of the U-shaped rod. The size of the long groove should be designed according to the diameter and stroke requirements of the fixed shaft 11 to ensure its processing accuracy, so that the mounting ring 21 is located in the U-shaped groove of the U-shaped rod 22. The middle of the horizontal part of the U-shaped rod 22 is connected to the pressure rod 7. The pressure rod 7 is made of high-strength material. A hinge shaft 23 is passed through the middle of the pressure rod 7 so that the pressure The rod 7 is rotatable relative to the hinge shaft 23. The hinge shaft 23 is mounted on a pair of hinge shaft mounting seats 20 that are arranged opposite to each other. The hinge shaft mounting seats 20 are arranged on the mounting surface of the hinge shaft 23. The mounting surface of the hinge shaft 23 is arranged below the mounting surface through the mounting rod. A cylinder is installed at the other end of the pressure rod 7. The cylinder body of the cylinder is arranged on the mounting frame arranged on the bracket module. The piston rod of the cylinder is connected to the end of the pressure rod 7 to ensure that the connection is firm and the connection point is located at the center of the end of the pressure rod 7 to avoid uneven force. According to actual needs, select a cylinder of appropriate specifications, such as selecting the cylinder diameter and stroke parameters of the cylinder according to the required thrust and stroke to ensure that it can provide sufficient thrust to push the first mounting plate 12 to a predetermined height.

[0038] In the above technical solution, the process of the pushing component pushing the first mounting plate 12 is as follows: when the cylinder is started, gas is introduced into the air inlet of the cylinder to extend the piston rod of the cylinder, pushing one end of the pressure rod 7 to move upward, and the pressure rod 7 rotates around the hinge shaft 23, driving the U-shaped rod and the mounting ring 21 to move upward along the long groove of the fixed shaft 11, thereby pushing the first mounting plate 12 to move upward. During the pushing process, the rising speed and final height of the first mounting plate 12 are accurately controlled by the pressure regulating valve and the stroke switch of the cylinder, so that it is engaged with the second mounting plate 14, ensuring that the protective equipment sample clamping assembly 4 obtains a predetermined initial velocity. In actual use, a sensor (such as a laser ranging sensor) can be used to monitor the rising height of the first mounting plate 12, and the parameters of the cylinder can be fine-tuned according to the measurement data to make the movement of the first mounting plate 12 accurately meet the test requirements. After the cylinder piston rod retracts, it drives one end of the pressure rod 7 to move downward, and the pressure rod 7 rotates around the hinge shaft 23, driving the U-shaped rod and the mounting ring 21 to move downward along the long groove of the fixed shaft 11, thereby allowing the first mounting plate 12 to move freely downward.

[0039] In the above technical solution, if Figure 1 or Figure 2 As shown, the downward or upward movement of the pressure rod 7 can also be pushed manually, that is, a pressure rod handle is provided at the end of the pressure rod 7.

[0040] In the above technical solution, the structural design of the pushing component can stably push the first mounting plate 12 up and down to ensure the accuracy and reliability of the first mounting plate 12 when giving the protective equipment sample an initial velocity. The cylinder is used as a power source to provide sufficient thrust to accurately push the first mounting plate 12 to engage with the second mounting plate 14, and the thrust size and pushing speed can be flexibly adjusted according to different test requirements to provide a stable and adjustable initial velocity for the protective equipment sample, thereby ensuring the repeatability and consistency of the test process. The adjustable characteristics of the cylinder can be used to conveniently change the rising height and speed of the first mounting plate 12, and by adjusting parameters such as the intake pressure and flow rate, different test scenarios and test conditions can be met. At the same time, the pressure rod 7 and U The design of the U-shaped rod enables the pushing process to have good mechanical transmission performance. Through the cooperation of the hinge shaft 23 and the long groove, flexible motion conversion is realized, and the motion trajectory and position of the first mounting plate 12 can be accurately controlled, so that the test device can adapt to the testing requirements of different initial velocities and different types of protective equipment; the pushing component is located below the mounting surface, which effectively utilizes the space of the device and avoids spatial conflicts with other components, making the layout of the entire test device more compact and reasonable. The mounting ring 21 is sleeved on the motor shaft 15 and connected to the outer ring of the bearing, utilizing existing structural components, reducing additional supporting structures, improving the space utilization of the device, making the device structure more concise, and convenient for installation, maintenance and operation; when the first mounting plate 12 is impacted, since the U-shaped rod is connected to the mounting ring 21 through the fixed shaft 11 and the long groove, it can buffer part of the impact force to a certain extent, avoiding rigid damage to the components due to sudden impact. The design of the long groove allows the U-shaped rod to have a certain amount of room for movement, which can buffer and disperse the impact, reduce the direct impact on other key components (such as the motor shaft 15, the first mounting plate 12, etc.), and extend the service life of the device; the various components of the pushing assembly are relatively independent, with a clear structure and easy to disassemble and replace. If the cylinder, the pressure rod 7 or the U-shaped rod fails, they can be maintained or replaced separately without large-scale disassembly of the entire device, which reduces the maintenance cost and time cost and improves the maintainability and reliability of the device.

[0041] Figure 1 and Figure 2In one of the technical solutions, the pushing assembly also includes a limit plate 6, which reciprocates in a direction perpendicular to the pressure rod 7 through a linear motor, and the limit plate 6 has at least a first state located between the pressure rod 7 and the linear motor mounting frame, and a second state away from the pressure rod 7 in the horizontal direction, and the linear motor is installed on a mounting frame arranged at the bottom of the bracket 3 near the pressure rod 7. The reciprocating stroke of the limit plate 6 in a direction perpendicular to the pressure rod 7 can be precisely controlled by the photoelectric controller 8, and the photoelectric controller 8 is installed through a fixed plate 5 arranged on the bracket, and the fixed plate 5 is L-shaped. The limit plate 6 reciprocates in a direction perpendicular to the pressure rod 7 and is driven by a linear motor. A limit plate handle is provided on the limit plate 6 to facilitate manual driving of the movement of the limit plate 6 under special circumstances. The linear motor can be installed under the bracket 3. When it is necessary to give the first mounting plate 12 an initial velocity, the cylinder is started to push the pressure rod 7 upward, so that the first mounting plate 12 rises and engages with the second mounting plate 14, and the limit plate 6 is adjusted to the first state so that it is located between the pressure rod 7 and the linear motor mounting frame to prevent the pressure rod 7 from moving upward, resulting in failure to give the first mounting plate 12 an initial velocity.

[0042] In the above technical solution, the linear motor can conveniently switch the limit plate 6 between the first state and the second state, so that the pushing component has different functions in different test stages. When pushing is required, the limit plate 6 is in the first state to ensure the safety and stability of the pushing process; in the reset stage, the limit plate 6 is switched to the second state without affecting the reset action of the pressure rod 7 and the first mounting plate 12, making the operation of the entire test device more flexible and improving the convenience and automation of the device.

[0043] In one of the technical solutions, the motorcycle protective gear impact wear test device further includes a controller 9, and the motor 10, the linear motor, and the solenoid valve of the cylinder are all electrically connected to the controller 9. By electrically connecting the motor 10, the linear motor, and the solenoid valve of the cylinder to the controller 9, the integrated control of the entire motorcycle protective gear impact wear test device is achieved, and the operator does not need to manually operate each component separately, but only needs to use the controller 9 to achieve coordinated control of different components, which greatly improves the convenience and efficiency of operation. For example, when starting a test, only the corresponding instructions need to be input on the controller 9, and the controller 9 can start the motor 10 in sequence according to the preset program, control the linear motor to adjust the state of the limit plate 6, and drive the solenoid valve of the cylinder to realize the pushing operation of the pressure rod 7, thereby automating the entire test process and reducing the possibility of manual operation errors; the controller 9 can accurately control the speed of the motor 10, so that the second mounting plate 14 reaches the required precise speed, ensuring that the protective equipment sample clamping assembly 4 obtains an accurate initial velocity, thereby providing a stable and consistent starting condition for the test. For the linear motor and the solenoid valve of the cylinder, the controller 9 can accurately adjust the movement position and speed of the linear motor, as well as the telescopic speed and thrust of the cylinder, and then accurately control the rising height and speed of the first mounting plate 12, accurately simulating different accident scenes and protective equipment usage conditions, which enables various parameters in the test process to be accurately adjusted, improves the accuracy and repeatability of the test results, and helps to make a detailed and accurate evaluation of the performance of the protective equipment. The controller 9 can also set various safety protection mechanisms. When the motor 10 rotates at an abnormal speed or a linear motor or cylinder fails, the controller 9 can detect and take corresponding safety measures in time, such as emergency shutdown or alarm, etc. For example, when the motor 10 is overloaded or the linear motor exceeds its travel range, the controller 9 can immediately cut off the power supply to avoid equipment damage and safety accidents, thereby ensuring the safety of the test device and operators.

[0044] The present invention further claims protection for the testing method of the impact wear resistance testing device for motorcycle protective gear, comprising: Step 1: Place the sample of the protective gear to be tested in the slot of the sample fixture cover 42, and connect the sample fixture cover to the sample fixture base 41, so that the sample of the protective gear to be tested has a portion flush with the bottom of the sample fixture cover 42; Step 2: Start the motor 10 to rotate the second mounting plate 14, and start the cylinder to quickly apply thrust to the push assembly to push the first mounting plate 12 upward. The first mounting plate 12 is precisely meshed with the second mounting plate 14 and rotates with the second mounting plate 14. At this time, the limit plate is located between the pressure rod 7 and the linear motor mounting frame under the action of the linear motor; Step 3: After the first mounting plate 12 reaches a preset speed, the motor 10 is turned off and the limiting plate 6 is driven horizontally away from the pressure rod by the linear motor. The other end of the pressure rod 7 moves upward, so that the mounting ring 21 moves downward. The first mounting plate 12 falls on the sample simulation plate under the action of gravity and continues to rotate until the speed is 0 under the action of inertia. Step 4: Remove the sample of protective gear to be tested and check its wear degree.

[0045] In the above technical scheme, the test method of the impact wear resistance test device for motorcycle protective gear clearly stipulates the complete process from sample preparation, device startup to final result acquisition, forming a set of standardized test steps, which ensures that different testers can follow the same operating procedures when using the motorcycle protective gear impact wear resistance test device, reducing the test errors caused by operational differences, and improving the reliability and comparability of the test results. Whether it is different laboratories or different batches of tests, the consistency of the test process can be guaranteed, providing a unified test standard for the performance evaluation of protective gear; by starting the motor 10 to rotate the second mounting plate 14, using the cylinder to push the first mounting plate 12 to engage with the second mounting plate 14 to give an initial velocity, and then allowing the first mounting plate 12 to freely fall to the sample simulation plate under the action of gravity, the friction is completely simulated. The process from high-speed movement to impact on the ground that the motorcycle protective gear may experience in an actual accident; and the protective gear sample to be tested has a part that is flush with the bottom of the sample fixture cover 42, which can accurately simulate the contact between the protective gear and the ground in the actual scene, providing highly realistic test conditions for the impact and wear resistance of the protective gear, so that the test results can better reflect the performance of the protective gear in a real accident; during the entire test process, the controller 9 coordinates the control of the motor 10, the cylinder and the linear motor, and realizes the precise operation of each stage of the test device. According to different test requirements, the speed of the motor 10 can be accurately adjusted to simulate different riding speeds; the movement of the first mounting plate 12 is controlled by the cylinder and the linear motor, which can accurately give the initial velocity to the protective gear sample, and the position of the limit plate 6 can be flexibly adjusted to ensure the stability and safety of the entire process. This helps to more accurately evaluate the performance of the protective gear in various possible accident scenarios, and provide more targeted data support for the design and improvement of the protective gear; the test method integrates multiple operation steps in an orderly manner, and the operator only needs to follow the steps in sequence to complete a complete test. Through automated control means, the complexity and workload of manual intervention are reduced, and the efficiency of testing is improved. At the same time, the concise and clear operation process reduces the technical requirements for operators, making the test process simpler, helping to complete the testing of multiple samples in a short time, and speeding up the development and quality inspection of protective equipment; finally, by removing the protective equipment samples to be tested to check their wear, the performance of the protective equipment under impact and wear conditions can be intuitively evaluated. This direct observation and analysis method, combined with the precise control of the movement of the device during the entire test process, provides comprehensive data for the impact resistance, wear resistance, structural integrity and other aspects of the protective equipment, which helps R&D personnel discover possible problems in the design and manufacturing of protective equipment, thereby improving the product in a targeted manner and improving the overall quality of protective equipment.

[0046] The number of equipment and processing scale described here are used to simplify the description of the present invention. The application, modification and variation of the impact wear resistance testing device and method of motorcycle protective equipment of the present invention will be obvious to those skilled in the art.

[0047] Although the embodiments of the present invention have been disclosed as above, they are not limited to the applications listed in the specification and the implementation modes, and they can be fully applied to various fields suitable for the present invention. For those familiar with the art, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the present invention is not limited to the specific details and the illustrations shown and described herein.

Claims

1. Motorcycle protective equipment impact wear test device, characterized in that: include: A support module having at least a mounting surface formed by four supports disposed away from the ground; A road surface simulation plate is detachably arranged on the mounting surface, and a through groove is provided at the center of the road surface simulation plate; A protective gear simulation module, comprising a first mounting plate sleeved on a motor shaft and located above the road simulation plate, and a plurality of protective gear sample clamping assemblies distributed in a circumferential array on the first mounting plate; An inertial simulation module, comprising a second mounting plate sleeved on the motor shaft and rotating with the motor shaft, and a plurality of counterweights distributed in a circumferential array on the second mounting plate, wherein the second mounting plate is located above the first mounting plate and the protective equipment sample clamping assembly is spaced apart from the counterweights; Wherein, under the thrust of a pushing component, the first mounting plate can move upward to engage with the second mounting plate and rotate with the second mounting plate so that the protective equipment sample clamping assembly has an initial velocity. After the pushing component withdraws the thrust, the first mounting plate falls freely so that the protective equipment sample clamping assembly falls on the road simulation board and continues to rotate to a speed of 0 under the action of inertia.

2. The impact wear resistance testing device for motorcycle protective equipment according to claim 1, characterized in that: Any protective tool sample clamping assembly is arranged at the free end of the first connecting rod extending radially along the first mounting plate, and any protective tool sample clamping assembly comprises: A sample holder, which is arranged at the bottom of the first connecting rod through a fixing block; A sample clamp cover, which is connected to the bottom of the sample clamp seat and has a slot for the sample clamp seat to be inserted; The middle part of the slot passes through the sample fixture cover, so that the protective tool sample arranged between the sample fixture seat and the sample fixture cover has a portion flush with the bottom of the sample fixture cover.

3. The impact wear resistance testing device for motorcycle protective equipment according to claim 2, characterized in that: Any counterweight block can be movably arranged below the second connecting rod extending radially along the second mounting plate, wherein any second connecting rod is provided with a through long groove extending along its length direction, and the counterweight block is provided with a bolt hole so that the counterweight block can be fixed by bolts below any position of the through long groove.

4. The impact wear resistance testing device for motorcycle protective equipment according to claim 3, characterized in that: The specific structure for achieving the engagement of the first mounting plate and the second mounting plate is as follows: a flower shaft and a bearing sleeved on the motor shaft are arranged at the center of the first mounting plate from top to bottom, the flower shaft is connected to the outer ring of the bearing, and a flower tooth cooperating with the flower shaft is arranged at the center of the second mounting plate.

5. The impact wear resistance testing device for motorcycle protective equipment according to claim 4, characterized in that: The second mounting plate is provided with a plurality of retractable columns passing through the second mounting plate, and the retractable columns can movably penetrate into the first mounting plate.

6. The impact wear resistance testing device for motorcycle protective equipment according to claim 5, characterized in that: The pushing assembly is located below the mounting surface and is disposed below the first mounting plate, and includes: A mounting ring, which is sleeved on the motor shaft and connected to the bottom of the bearing outer ring, and the mounting ring is provided with a pair of fixed shafts arranged along its radial direction; A U-shaped rod, the vertical portion of which is provided with a long slot for the fixed shaft to pass through, so that the mounting ring is clamped in the U-shaped rod; A pressure rod has one end connected to the horizontal part of the U-shaped rod, a hinge shaft in the middle, and a cylinder driving the other end of the pressure rod to move up and down, so that the mounting ring moves up and down with one end of the pressure rod, thereby driving the first mounting plate to move up and down.

7. The impact wear resistance testing device for motorcycle protective equipment according to claim 6, characterized in that: The pushing assembly also includes a limit plate, which reciprocates in a direction perpendicular to the pressure rod through a linear motor, and the limit plate has at least a first state located between the pressure rod and the linear motor mounting frame, and a second state away from the pressure rod in the horizontal direction. The linear motor is installed on a mounting frame arranged at the bottom of the bracket close to the pressure rod.

8. The impact wear resistance testing device for motorcycle protective equipment according to claim 7, characterized in that: It also includes a controller, and the motor, the linear motor, and the solenoid valve of the cylinder are all electrically connected to the controller.

9. The testing method of the impact wear resistance testing device for motorcycle protective equipment according to claim 8, characterized in that: include: Step 1: Lay the sample of the protective gear to be tested in the slot of the sample fixture cover, and connect the sample fixture cover to the sample fixture seat so that the sample of the protective gear to be tested has a portion flush with the bottom of the sample fixture cover; Step 2: Start the motor to rotate the second mounting plate, and start the cylinder to quickly apply thrust to the push assembly to push the first mounting plate upward. The first mounting plate is precisely meshed with the second mounting plate and rotates with the second mounting plate. At this time, the limit plate is located between the pressure rod and the linear motor mounting frame under the action of the linear motor; Step 3: After the first mounting plate reaches a preset speed, the motor is turned off and the limiting plate is driven horizontally away from the pressure rod by the linear motor, and the other end of the pressure rod moves upward, so that the mounting ring moves downward. The first mounting plate falls on the sample simulation plate under the action of gravity and continues to rotate until the speed is 0 under the action of inertia; Step 4: Take out the sample of protective gear to be tested and check its wear degree.

Images