Tire rubber performance testing method and special equipment thereof

Abstract

The invention discloses a tire rubber performance testing method and special equipment thereof. The testing method comprises a high-speed tread rubber wear resistance testing method and a mine truck tire tread cutting resistance and puncture resistance testing method. The special equipment comprises a performance testing equipment mechanism, a rubber wheel control mechanism and a rubber wheel vulcanizing mold. The linear speed of the rubber wheel and the linear speed of the friction disc are controlled through different motors, and the influence of the linear speed difference on tire abrasion is researched; by controlling the deflection angle, the influence of the deflection angle on tire abrasion is researched; by adding a liquid medium such as a gravel medium or water to the plane friction pair, the abrasion of the tire under the condition that the actual road surface is poor or on rainy days is researched; and the influence of the road surface on the tire abrasion is researched by replacing different friction discs 2.

Description

Technical Field

[0001] The present invention relates to the technical field of tire rubber performance testing under complex working conditions, and in particular to a tire rubber performance testing method and special equipment thereof. Background Art

[0002] Currently, there are few types of rubber performance testing equipment with a narrow scope of application. Often, only one of the properties can be tested. However, the wear resistance, cut resistance, and puncture resistance of tire rubber are important indicators that tire companies need to consider. They often need to entrust different manufacturers to conduct different tests to meet the listing requirements of qualified tires.

[0003] The operating conditions of tires are very complex, and the factors affecting tire wear resistance can be summarized as follows:

[0004] 1. Dynamic form: including angle, speed, pressure, etc.;

[0005] 2. Road surface characteristics: including material, geometric characteristics such as contact surface roughness, friction media such as water, oil, dirt, dust, etc.;

[0006] 3. Environmental factors: ambient temperature, humidity, rain and snow, etc. Mining truck tires and engineering tires are used in high-load and extremely harsh road environments such as mines, tunnels, quarries, and construction sites. Sharp foreign objects on the road surface can easily cut and damage the tires, causing the tire tread to break and fall off. At this time, the cut and puncture resistance of the tire is very important.

[0007] The existing general rubber performance tester has few test conditions, the test method is too simple, the friction pair and the tire wear process are quite different, and the test results are inaccurate. The actual road test has the problems of long test time and poor reproducibility, so it needs to be improved. Summary of the invention

[0008] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a tire rubber performance testing method and special equipment thereof.

[0009] In order to achieve the above object, the present invention adopts the following technical solutions:

[0010] A tire rubber performance testing method includes a high-speed tread rubber wear resistance testing method and a mining load tire tread cutting resistance and puncture resistance testing method.

[0011] Compared with the prior art, the present application can quickly complete the replacement of corresponding components in the equipment through an integrated assembled design mechanism, that is, it can effectively realize the detection of the wear resistance, cut resistance and puncture resistance of the tire, and can add water, sand and gravel and other materials simulating the real road environment as needed, so as to effectively realize the wear test experiment of tire rubber under the simultaneous action of multiple external working conditions; it is easy to install and disassemble, so as to quickly carry out experimental operations, and can be quickly replaced and cleaned after the equipment experiment process, so as to facilitate the real simulation of various different road conditions.

[0012] Preferably, the high-speed tread rubber wear resistance detection method comprises the following steps:

[0013] S1. First, use the rubber wheel vulcanization equipment to make the high-speed tire parts required for the test. The high-speed tire parts to be tested should be parked for more than 24 hours after vulcanization and before assembly;

[0014] S2. The components and equipment for measuring high-speed tires must be cleaned and dried before testing to ensure that there is no interference from foreign objects outside the test conditions;

[0015] S3. Install the friction and wear test disc component into the test equipment, apply pressure through the hydraulic equipment, load the rubber wheel control device to the friction and wear test disc component, and determine the force value through the six-component force sensor on the rubber wheel control device; control the speed of the turntable component through a motor device; control the speed of the high-speed tire component through another motor device; control the angle through the angle adjustment knob; maintain the loading for 1 minute, and at the same time, the loading device can ensure that the radial force remains unchanged during the test;

[0016] S4, rotating the test disc component along the tire driving direction until the relative sliding distance between the test disc component and the high-speed tire component reaches a set stroke or a set time;

[0017] S5. After the test is finished, the high-speed tire components are removed, the surface debris is cleaned, the mass loss of the high-speed tire components is weighed, and the data is saved.

[0018] Furthermore, the friction surface of the friction disc can be arbitrarily selected according to the actual road roughness to meet the needs; the friction disc can be added with free media such as sand, water, ice, talcum powder, etc.; it can effectively simulate the real road conditions, and the friction disc can fully accommodate the entire rubber wheel and has sufficient rigidity to ensure that when the loading equipment applies radial force to the rubber wheel, the friction disc will not be deformed in the lateral, longitudinal and bending aspects.

[0019] Preferably, the method for testing the cutting resistance and puncture resistance of the tread of a mining truck tire comprises the following steps:

[0020] S1. First, use the rubber wheel vulcanization equipment to produce the mining truck tire parts required for the test. The tested mining truck tire parts should be parked for more than 24 hours after vulcanization before assembly;

[0021] S2. Before testing, the components and equipment of mining truck tires must be cleaned and dried to ensure that there is no interference from foreign objects outside the test conditions;

[0022] S3. Install any one of the cut-resistant test disc and the puncture-resistant test disc to the test mechanism according to the test requirements, apply pressure through the hydraulic equipment, load the rubber wheel control device to the test disc component, and determine the force value through the six-component force sensor on the rubber wheel control device; control the speed of the turntable component through a motor; control the speed of the mining truck tire component through another motor; maintain the loading for 1 minute after completion, and at the same time, the loading device can ensure that the radial force remains unchanged during the test;

[0023] S4, rotating the test disc component along the driving direction of the mining truck tire component until the relative sliding distance between the test disc component and the mining truck tire component reaches a set stroke;

[0024] S5. After the test is finished, the mining truck tire components are removed, the loading pressure and the depth of the mining truck tire components pressed into the testing plate are measured and recorded, the data are saved, the ratio is calculated, and a curve is drawn.

[0025] Furthermore, in actual preparation, stainless steel rivets or a flat ring with stainless steel edges can be installed on the bottom of the friction disc according to the needs of the test so that it can contact the rubber wheel.

[0026] When stainless steel rivets are installed in the friction disc, the stainless steel rivets are arranged according to the following scheme: the rivet spacing is 15mm, 5 rivets are grouped together, and the rivets are round or prismatic in shape and of the same size. When the rivets are inserted into the rubber wheel, the rivets will not touch the metal layer of the rubber wheel;

[0027] When stainless steel edges are installed in the friction disc, the stainless steel edges are arranged according to the following scheme, with an edge spacing of 15 mm, a triangular edge shape and the same size, and the rivet will not touch the metal layer of the rubber wheel when it is inserted into the rubber wheel;

[0028] The friction disc can completely accommodate the entire rubber wheel and has sufficient rigidity to ensure that when the loading equipment applies radial force to the rubber wheel, the friction disc will not deform in the lateral, longitudinal and bending aspects.

[0029] The present invention also proposes a special equipment for testing tire rubber performance, which is applicable to the above-mentioned tire rubber performance testing method, and includes a performance testing equipment mechanism, a rubber wheel control mechanism and a rubber wheel vulcanization mold;

[0030] The performance testing equipment structure includes an outer clamping ring, a friction disc assembly, a support seat, a base, a transmission gear, a motor, a transmission shaft, and a driving gear set;

[0031] The rubber wheel control mechanism includes a rubber wheel, a steering gear, a second motor, a hydraulic rod, a hydraulic cylinder, an angle adjustment device, and a six-component force sensor;

[0032] The rubber wheel vulcanization mold comprises an upper mold plate, a middle mold plate, a detachable sun wheel, a sun wheel supporting device and a lower mold plate.

[0033] Compared with the prior art, the present application adopts a detachable assembly method to replace the test disc. By replacing different test discs, different conditions can be simulated to improve the applicability of the product, which helps to conduct tests quickly and in a targeted manner. In addition, water, sand and gravel and other materials simulating real road environments can be added as needed to effectively realize the wear test experiments on tire rubber under the simultaneous action of multiple external working conditions.

[0034] Preferably, in the performance testing equipment structure, the support seat is fixed to one side of the upper end of the base, the transmission shaft is rotatably sleeved on the base, the first motor is installed on the other side of the upper end of the base, the transmission gear set is installed on the lower end of the transmission shaft and the output shaft of the first motor, the outer clamping ring is installed on the upper end of the support seat, the friction disc assembly is installed in the outer clamping ring, and the driving gear set is installed on the inner wall of the friction disc assembly and the upper end of the transmission shaft;

[0035] The friction disc assembly includes a friction and wear test disc, a cutting resistance test disc and a puncture resistance test disc;

[0036] The transmission gear set includes two bevel gears, which are respectively fixed on the lower end of the transmission shaft and the output shaft of the first motor;

[0037] The driving gear set includes an inner gear ring and a gear meshing with each other, wherein the inner gear ring is fixed to the inner wall of the friction disc assembly, and the gear is fixed to the upper end of the transmission shaft, and the upper end of the transmission shaft extends to the middle of the friction disc assembly;

[0038] The outer clamping ring is composed of two semicircular rings, which are detachably connected and have an annular groove in common; the friction disc assembly is arranged through the outer clamping ring, and the friction disc assembly is rotatably sleeved in the outer clamping ring.

[0039] Furthermore, the base is placed on a table or the ground; a No. 1 motor is placed on the base, and power is transmitted through master-slave bevel gears to control the rotation speed of the rubber performance test disc; the rubber performance test disc is fixed by an outer clamping ring, and a metal gasket is arranged between the outer clamping ring and the friction disc to improve the stability of the rubber performance test disc and reduce the vibration of the friction disc caused by the motor transmission; the outer clamping ring is a separated structure and is fixed by bolts; an interface is provided at the bottom of the outer clamping ring to connect with the support seat, and the support seat has a bolt-type structure to provide convenience when replacing the rubber performance test disc;

[0040] During the test, the rotor rotates together with the rubber performance test disc; the fence height is 10 cm to prevent the added medium from being thrown out of the friction disc under the action of centrifugal force when the friction disc rotates; the friction surface on the friction disc can be replaced according to the actual road conditions, and the loss-in-weight scale can be used to add oil, water, ice, talcum powder and other media to the friction disc for simulation.

[0041] Preferably, the hydraulic rod in the rubber wheel control mechanism is installed on one side of the upper end of the performance test equipment structure, the hydraulic rod is installed on one side of the upper end of the base, the hydraulic cylinder is connected to the lower end of the hydraulic rod, the lower end of the hydraulic rod is penetrated and arranged in the hydraulic cylinder, the angle adjustment device is installed at the lower end of the hydraulic cylinder, the steering gear group is installed at the lower end of the angle adjustment device, the No. 2 motor is installed on one side of the angle adjustment device, the No. 2 motor is installed at the upper end of the steering gear group, the six-component force sensor is installed on the steering gear group, and the rubber wheel is installed on the steering gear group;

[0042] The lower end of the rubber wheel extends into the friction disc assembly.

[0043] Furthermore, the rubber wheel control mechanism is fixed to the outer wall of the upper end of the base so that it is located at the upper end of the friction disc. There is a groove at the upper end of the base to enable it to slide up and down freely. The rubber wheel control mechanism controls the up and down sliding distance and loading pressure by the cooperation of the hydraulic rod and the hydraulic cylinder. The rubber wheel is installed on the rotating shaft, and there is a six-component force detector on the rotating shaft to detect the size of the loading pressure and record it. The speed of the rubber wheel is controlled by the No. 2 motor. There is an angle control mechanism in the middle of the rubber wheel control mechanism to control the angle of the rubber wheel. It is used to simulate steering and realize tangent operation with the friction disc to simulate the normal driving of the tire.

[0044] In the rubber wheel control system, the driving mode of the rubber wheel can be controlled by adjusting the loading condition of the external transmission gear of the No. 2 motor. When the transmission gear is loaded, the No. 2 motor has a driving effect on the rubber wheel, which is active or passive friction. When the rubber wheel linear speed is greater than the performance test disk linear speed, it is active friction. When the rubber wheel linear speed is less than the performance test disk linear speed, it is passive friction. When the transmission gear is not loaded, the No. 2 motor has no driving effect on the rubber wheel. At this time, the rubber wheel is driven by the performance test disk, which is follower friction.

[0045] Preferably, the diameter of the rubber wheel is 90 mm; the cooperation of the hydraulic cylinder and the hydraulic rod can achieve a pressurization of 0-500N; the angle adjustment range of the angle adjustment device is -10-10°; and the rotation speed of the rubber wheel is 0-4m / s.

[0046] Furthermore, the operating speed of the rubber wheel can be effectively controlled to effectively simulate the driving condition of the tire on the road.

[0047] Preferably, the upper template, the middle template and the lower template in the rubber wheel vulcanization mold are arranged in sequence from top to bottom, and the detachable sun gear is located in the middle template;

[0048] The detachable sun gear comprises a left detachable sun gear, a right detachable sun gear, a sun gear fixing component assembly and a sun gear supporting component; the sun gear supporting component is located between the left detachable sun gear and the right detachable sun gear, and the sun gear fixing component is disposed through the sun gear supporting component, the left detachable sun gear and the right detachable sun gear;

[0049] The sun gear fixing assembly includes a lower sun gear fixing member and an upper sun gear fixing member;

[0050] The sun gear supporting assembly includes an upper sun gear supporting device and a lower sun gear supporting device.

[0051] Furthermore, the lower template, the middle template and the upper template can cooperate to form a cavity required for preparing the rubber wheel, so that the corresponding rubber wheel can be quickly prepared therein according to the needs, so that the vulcanization mold and the test mold can be made separately, reducing the number of molds and increasing production. At the same time, after the vulcanization of the corresponding rubber wheel is completed, it can be taken out with a crowbar through the small hole on the sun wheel fixing part, and the external rubber part can be easily separated from the internal metal sun wheel.

[0052] Preferably, the rubber wheel vulcanization mold is made of aluminum alloy, a sealing line is installed in the upper mold plate, and a rubber removal line is installed in the middle mold plate.

[0053] Furthermore, the preparation is convenient, the sealing of the rubber wheel during preparation is effectively guaranteed, and the excess colloid can be effectively discharged.

[0054] Preferably, oil, water, ice and talcum powder media can be added into the friction disc assembly;

[0055] The friction disc assembly can accommodate the entire rubber wheel;

[0056] The friction and wear test disc may be provided with friction lines;

[0057] The cut-resistant test plate is provided with a plurality of stainless steel edges at equal intervals, the plurality of stainless steel edges are arranged in a circular ring shape, and the interval between two adjacent stainless steel edges is 15 mm;

[0058] The bottom of the puncture resistance test plate is provided with five stainless steel rivet circles at equal intervals from the inside to the outside, and a plurality of stainless steel rivets are provided at equal intervals in the stainless steel rivet circles, and the interval between two adjacent stainless steel rivets is 15 mm.

[0059] Furthermore, the corresponding road conditions can be effectively set according to needs, better simulating the conditions that tires may encounter when driving on the road, improving the authenticity of the test, so as to obtain more accurate data.

[0060] The beneficial effects of the present invention are:

[0061] 1. Use different driving modes of the rubber tires to simulate the friction during acceleration and deceleration, constant speed driving, starting and drifting. When accelerating and decelerating, use active friction or passive friction. When driving at a constant speed, use follow-up friction. When drifting, starting and other states, use passive friction.

[0062] In the rubber wheel control system, the driving mode of the rubber wheel can be controlled by adjusting the loading of the external transmission gear of the No. 2 motor. When the transmission gear is loaded, the No. 2 motor has a driving effect on the rubber wheel, which is active or passive friction. When the rubber wheel linear speed is greater than the performance test disk linear speed, it is active friction, and when the rubber wheel linear speed is less than the performance test disk linear speed, it is passive friction. When the transmission gear is not loaded, the No. 2 motor has no driving effect on the rubber wheel, and the rubber wheel is driven by the performance test disk at this time, which is follower friction.

[0063] 2. The driving end of the motor is connected to the transmission shaft through a 90° turn of the gear, and is connected to the friction disc through a driving gear set. The motor is arranged on a bracket, and the bracket is arranged on a base; the friction disc is fixed by an outer clamp ring; the outer clamp ring is fixed by a support seat, one of which is movable and foldable, which is convenient for the removal of the outer clamp ring; the outer clamp ring is in a detachable state, which is convenient for installing the friction disc according to needs, that is, after the outer clamp ring is disassembled, the friction disc can be installed in the outer clamp ring, so as to achieve the purpose of rapid removal according to needs, so as to simulate different road conditions and for different tests;

[0064] 3. The bolt-type structure of the support seat can provide convenience when replacing the rubber performance test disc; during the test, the rotor rotates together with the rubber performance test disc; the fence height is 10cm to prevent the added medium from being thrown out of the friction disc under the action of centrifugal force when the friction disc rotates; the friction surface on the friction disc can be replaced according to the actual road conditions, and the friction disc can be simulated by adding oil, water, ice, talcum powder and other media through a weight loss scale;

[0065] 4. The innovation of this application lies in the integration of friction and wear, cutting and puncture test equipment; the integrated assembled equipment structure facilitates the rapid replacement of components used to simulate road conditions, which can effectively realize the detection of tire wear resistance, cutting resistance and puncture resistance; the equipment structure is improved to increase equipment stability; the wear test interface is improved into a groove form to ensure the retention rate of various free media on the friction interface during the experiment, so as to add water, sand, gravel, soil and other materials existing in the real road surface to achieve a high degree of simulation of road conditions; for example, a stable medium film can be formed during high-speed water sliding experiments; an easy-to-disassemble device is added so that the equipment can be quickly replaced and cleaned after the experiment, which is convenient for replacing a variety of different experimental road surfaces. BRIEF DESCRIPTION OF THE DRAWINGS

[0066] Figure 1 A flow chart of a tire rubber performance testing method proposed by the present invention;

[0067] Figure 2 This is a structural schematic diagram of a special equipment for testing tire rubber performance proposed by the present invention;

[0068] Figure 3 This is a structural diagram of an outer clamping ring, a friction plate and a driving gear set in a special equipment for testing tire rubber properties proposed by the present invention;

[0069] Figure 4 This is a structural diagram of a friction disc used for cutting resistance testing in the present invention;

[0070] Figure 5 This is a structural diagram of a friction disc used for puncture resistance testing in the present invention;

[0071] Figure 6 This is a structural exploded view of the outer clamp ring in the present invention;

[0072] Figure 7 This is a structural diagram of the connection between the outer clamp ring and the outer clamp ring of the present invention;

[0073] Figure 8 It is a structural schematic diagram of the rubber wheel control mechanism in the present invention;

[0074] Fig. 9 It is a schematic diagram of the overall structure of the rubber performance testing equipment in the present invention;

[0075] Fig.10 It is a structural schematic diagram of the rubber vulcanization mold in the present invention;

[0076] Fig.11 Schematic diagram of the upper template of the rubber vulcanization mold in the present invention;

[0077] Fig.12 It is a structural schematic diagram of a detachable sun gear in a rubber vulcanization mold of the present invention;

[0078] In the figure: 1 outer clamping ring, 2 friction disc assembly, 3 support seat, 4 base, 5 transmission gear, 6 No. 1 motor, 7 transmission shaft, 8 driving gear set, 9 rubber wheel, 10 steering gear, 11 No. 2 motor, 12 hydraulic rod, 13 hydraulic cylinder, 14 angle adjustment device, 15 six-component force sensor, 16 upper template, 17 middle template, 18 detachable sun gear, 19 glue discharge line, 20 lower template, 21 sealing line, 22 left detachable sun gear, 23 right detachable sun gear, 24 lower sun gear fixing part, 25 upper sun gear fixing part, 26 upper sun gear supporting device, 27 lower sun gear supporting device. DETAILED DESCRIPTION

[0079] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0080] Embodiment 1:

[0081] The specific process of the rubber friction and wear performance testing method involved in this embodiment includes:

[0082] The rubber and additives are mixed according to a specific formula to obtain a mixed rubber, which is placed in a demoldable rubber wheel production mold and vulcanized on a flat vulcanizer under set time, temperature and pressure conditions. After the vulcanization is completed, the staff will take out the sun wheel fixing parts and the supporting part in the detachable sun wheel to obtain the external rubber part, and combine the external rubber part with the experimental wheel to obtain the final rubber wheel 9, which will be parked for more than 24 hours.

[0083] The rubber wheel 9 is pre-grinded, and the surface of the rubber wheel 9 is ground to reveal a fresh surface; the linear speed of the rubber wheel 9 is set to 0.8 m / s, the linear speed of the sanding belt is set to 0.6 m / s, the linear speed difference is formed to 0.2 m / s, the contact pressure is 200 N, the deflection angle is 0°, the temperature is room temperature 25°C, the running time is 4 minutes, and the debris on the surface of the rubber wheel 9 is cleaned.

[0084] The rubber wheel 9 is placed at room temperature for 20 minutes to eliminate the temperature rise of the rubber wheel 9 caused by pre-grinding, and then taken out for weighing, and the weighing result is input into the remote control computer to complete the collection of initial data;

[0085] The speeds of the rubber wheel 9 and the friction and wear test disc were set to 0.6m / s and 0.8m / s respectively, the slip difference between the two was set to 0.2m / s, the load condition was 100-375N, the surface of the friction and wear test disc was a 35# sand belt; the deflection value was set to 5°; 30-mesh quartz sand particles were added between the rubber wheel 9 and the friction belt at a speed of 100g / h by a weight loss scale to simulate the influence of free media on the road surface, and the test time was 4min;

[0086] Remove the rubber wheel 9, clean it until there is no obvious adhesive powder or other substances on the surface, and then place the rubber wheel 9 at room temperature for 20 minutes and weigh it. Enter the weighing result into the remote control computer to complete the secondary data collection;

[0087] After the test, the test results are exported through a remotely controlled computer to perform wear resistance analysis on the rubber wheel 9.

[0088] After processing, the data obtained is as follows:

[0089] Load(N) Deflection angle (°) Linear speed difference (m / s) Wear amount (g) 100 10 0.3 1.59 175 10 0.3 3.16 250 10 0.3 3.9 325 10 0.3 5.24

[0090] It can be seen that the wear data has good regularity and can simulate the actual road conditions very well.

[0091] Embodiment 2:

[0092] The rubber wear test method involved in this embodiment selects the tread rubber of a truck tire as the friction object and analyzes the wear cycle of the truck tire. The specific process includes:

[0093] The rubber and the additive are mixed in a set ratio, and a mixed rubber is obtained by kneading, and the mixed rubber is placed in a demoulding rubber wheel manufacturing mold and vulcanized on a flat vulcanizer under set time, temperature and pressure conditions. After the vulcanization is completed, the staff will take out the sun wheel fixing part, take out the supporting part in the detachable sun wheel, and obtain the external rubber part. The external rubber part is combined with the experimental wheel to obtain the final rubber wheel 9;

[0094] The rubber wheel 9 is pre-grinded to expose a fresh surface on the surface of the rubber wheel 9;

[0095] The rubber wheel 9 is placed in a constant temperature drying oven and dried for 30 minutes, taken out and weighed, and the weighing result is input into the remote control computer to complete the collection of initial data;

[0096] Test conditions: The speeds of the rubber wheel 9 and the friction and wear test disc are set to 0.7m / s and 0.85m / s respectively, the slip difference between the two is set to 0.15m / s, the load condition is 100-375N, the surface of the friction and wear test disc is a homemade sanding belt, the deflection angle value is set as the time function guide value, under the parameter of the horizontal coordinate time t, the deflection angle is cyclically moved from -5° to +5°, and each 5 minutes is a cycle. Water is added to the surface of the flat friction and wear test disc at a speed of 200ml / h through a weight loss scale to simulate the influence of free media on the road surface. The test time is 15 minutes;

[0097] Remove the rubber wheel 9, clean it until there is no obvious adhesive powder or other substances on the surface, place the rubber wheel 9 in a constant temperature drying oven to dry for 30 minutes, take it out and weigh it, input the weighing result into the remote control computer, and complete the secondary data collection;

[0098] After the test, the test results are exported through a remotely controlled computer to perform wear resistance analysis on the rubber wheel 9.

[0099] After processing, the data obtained is as follows:

[0100] Load(N) Deflection angle (°) Linear speed difference (m / s) Wear amount (g) 100 5 0.15 0.95 175 5 0.15 1.36 250 5 0.15 2.33 325 5 0.15 3.15 100 0 0.15 0.64 175 0 0.15 1.05 250 0 0.15 2.02 325 0 0.15 2.84 100 -5 0.15 1.1 175 -5 0.15 1.62 250 -5 0.15 2.47 325 -5 0.15 3.11

[0101] It can be seen that the wear data is in good agreement with the actual wear conditions and can simulate the actual road conditions very well.

[0102] Embodiment 3:

[0103] This embodiment will test the cut resistance and puncture resistance of three different tread rubber formulations. The specific steps are as follows:

[0104] Step 1: First, use the rubber wheel 9 vulcanization mold to make the rubber wheel 9 required for the test. The tested rubber wheel 9 should be parked for more than 24 hours after vulcanization before assembly. Before the test, use anhydrous ethanol or other cleaning agents to clean the release agent;

[0105] Step 2: Before testing, the measuring rubber wheel 9 and the equipment are cleaned and dried with anhydrous ethanol or other cleaning agents to ensure that there is no interference from foreign matter outside the test conditions;

[0106] Step 3: Install the cut resistance test disc or the puncture resistance test disc to the test mechanism, apply pressure through the hydraulic rod 12, load the rubber wheel 9 control mechanism to the test disc, and determine the force value through the six-component force sensor 15 on the rubber wheel 9 control mechanism; control the speed of the test disc through the No. 1 motor 6; control the speed of the rubber wheel 9 through the No. 2 motor 11; maintain for 1 minute after loading is completed, and at the same time, the loading device can ensure that the radial force remains unchanged during the test;

[0107] Step 4: Rotate the test disc along the direction of tire travel until the relative sliding distance between the test disc and the rubber wheel 9 reaches the set stroke;

[0108] Step 5: After the test, remove the rubber wheel 9, measure and record the loading pressure and the depth of the rubber wheel 9 pressed by the cut-resistant test disc or the puncture-resistant test disc, save the data, and calculate the ratio;

[0109] The data obtained after the above test on three different tread rubbers are as follows:

[0110] A B C Wear-resistant tread formula Mine tread formula Low rolling resistance tread compound Loading pressure(N) 423 455 436 Pressing depth (mm) 7.23 6.25 7.83 ratio 58.50622407 72.8 55.68326948

[0111] It can be seen that the ratio of Mine B tread formula is significantly larger than the other two formulas, which is consistent with the actual tire test situation, indicating that this test method can test the excellent cut and puncture resistance of materials and tires.

[0112] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A tire rubber performance testing method, characterized in that: It includes the test method for the wear resistance of high-speed tread rubber and the test method for the cut and puncture resistance of mining load-bearing tire tread.

2. A tire rubber performance testing method according to claim 1, characterized in that: The high-speed tread rubber wear resistance detection method comprises the following steps: S1. First, use the rubber wheel vulcanization equipment to make the high-speed tire parts required for the test. The high-speed tire parts to be tested should be parked for more than 24 hours after vulcanization and before assembly; S2. The components and equipment for measuring high-speed tires must be cleaned and dried before testing to ensure that there is no interference from foreign objects outside the test conditions; S3. Install the friction and wear test disc component into the test equipment, apply pressure through the hydraulic equipment, load the rubber wheel control device to the friction and wear test disc component, and determine the force value through the six-component force sensor on the rubber wheel control device; control the speed of the turntable component through a motor device; control the speed of the high-speed tire component through another motor device; control the angle through the angle adjustment knob; maintain the loading for 1 minute, and at the same time, the loading device can ensure that the radial force remains unchanged during the test; S4, rotating the test disc component along the tire driving direction until the relative sliding distance between the test disc component and the high-speed tire component reaches a set stroke or a set time; S5. After the test is finished, the high-speed tire components are removed, the surface debris is cleaned, the mass loss of the high-speed tire components is weighed, and the data is saved.

3. A tire rubber performance testing method according to claim 1, characterized in that: The method for testing the cutting resistance and puncture resistance of the tread of a mining truck tire comprises the following steps: S1. First, use the rubber wheel vulcanization equipment to produce the mining truck tire parts required for the test. The tested mining truck tire parts should be parked for more than 24 hours after vulcanization before assembly; S2. Before testing, the components and equipment of mining truck tires must be cleaned and dried to ensure that there is no interference from foreign objects outside the test conditions; S3. Install any one of the cut-resistant test disc and the puncture-resistant test disc to the test mechanism according to the test requirements, apply pressure through the hydraulic equipment, load the rubber wheel control device to the test disc component, and determine the force value through the six-component force sensor on the rubber wheel control device; control the speed of the turntable component through a motor; control the speed of the mining truck tire component through another motor; maintain the loading for 1 minute after completion, and at the same time, the loading device can ensure that the radial force remains unchanged during the test; S4, rotating the test disc component along the driving direction of the mining truck tire component until the relative sliding distance between the test disc component and the mining truck tire component reaches a set stroke; S5. After the test is finished, the mining truck tire components are removed, the loading pressure and the depth of the mining truck tire components pressed into the testing plate are measured and recorded, the data are saved, the ratio is calculated, and a curve is drawn.

4. A special equipment for testing tire rubber performance, applicable to a tire rubber performance testing method according to claims 1 to 3, characterized in that: Including performance testing equipment mechanism, rubber wheel control mechanism and rubber wheel vulcanization mold; The performance testing equipment structure comprises an outer clamping ring (1), a friction disc assembly (2), a support seat (3), a base (4), a transmission gear (5), a No. 1 motor (6), a transmission shaft (7), and a driving gear set (8); The rubber wheel control mechanism comprises a rubber wheel (9), a steering gear (10), a second motor (11), a hydraulic rod (12), a hydraulic cylinder (13), an angle adjustment device (14), and a six-component force sensor (15); The rubber wheel vulcanization mold comprises an upper mold plate (16), a middle mold plate (17), a detachable sun gear (18), a sun gear supporting device and a lower mold plate (20).

5. The tire rubber performance testing device according to claim 4, characterized in that: In the performance testing equipment structure, the support seat (3) is fixed on one side of the upper end of the base (4), the transmission shaft (7) is rotatably sleeved on the base (4), the first motor (6) is installed on the other side of the upper end of the base (4), the transmission gear set (5) is installed on the lower end of the transmission shaft (7) and the output shaft of the first motor (6), the outer clamping ring (1) is installed on the upper end of the support seat (3), the friction disc assembly (2) is installed in the outer clamping ring (1), and the driving gear set (8) is installed on the inner wall of the friction disc assembly (2) and the upper end of the transmission shaft (7); The friction disc assembly (2) comprises a friction and wear test disc, a cutting resistance test disc and a puncture resistance test disc; The transmission gear set (5) comprises two bevel gears, which are respectively fixed on the lower end of the transmission shaft (7) and the output shaft of the first motor (6); The driving gear set (8) comprises an inner gear ring and a gear meshing with each other, the inner gear ring is fixed to the inner wall of the friction disc assembly (2), the gear is fixed to the upper end of the transmission shaft (7), and the upper end of the transmission shaft (7) extends to the middle of the friction disc assembly (2); The outer clamping ring (1) is composed of two semicircular rings, which are detachably connected and have an annular groove in common. The friction disc assembly (2) is arranged through the outer clamping ring (1), and the friction disc assembly (2) is rotatably sleeved in the outer clamping ring (1).

6. The tire rubber performance testing device according to claim 4, characterized in that: The hydraulic rod (12) in the rubber wheel control mechanism is installed on one side of the upper end of the performance test equipment structure, the hydraulic rod (12) is installed on one side of the upper end of the base (4), the hydraulic cylinder (13) is connected to the lower end of the hydraulic rod (12), the lower end of the hydraulic rod (12) is arranged in the hydraulic cylinder (13), the angle adjustment device (14) is installed at the lower end of the hydraulic cylinder (13), the steering gear group (10) is installed at the lower end of the angle adjustment device (14), the second motor (11) is installed on one side of the angle adjustment device (14), the second motor (11) is installed at the upper end of the steering gear group (10), the six-component force sensor (15) is installed on the steering gear group (10), and the rubber wheel (9) is installed on the steering gear group (10); The lower end of the rubber wheel (9) extends into the friction disc assembly (2).

7. The tire rubber performance testing device according to claim 6, characterized in that: The diameter of the rubber wheel (9) is 90 mm; the pressure range of the hydraulic cylinder (13) and the hydraulic rod (12) is 0-500 N; the angle adjustment range of the angle adjustment device (14) is -10-10°; and the rotation speed of the rubber wheel (9) is 0-4 m / s.

8. The tire rubber performance testing device according to claim 4, characterized in that: The upper template (16), the middle template (17) and the lower template (20) in the rubber wheel vulcanization mold are arranged in sequence from top to bottom, and the detachable sun gear (18) is located in the middle template (17); The detachable sun gear (18) comprises a left detachable sun gear (22), a right detachable sun gear (23), a sun gear fixing component assembly and a sun gear supporting component; the sun gear supporting component is located between the left detachable sun gear (22) and the right detachable sun gear (23), and the sun gear fixing component is arranged through the sun gear supporting component, the left detachable sun gear (22) and the right detachable sun gear (23); The sun gear fixing assembly comprises a lower sun gear fixing member (24) and an upper sun gear fixing member (25); The sun gear support assembly comprises an upper sun gear support device (26) and a lower sun gear support device (27).

9. A tire rubber performance testing method and dedicated equipment according to claim 8, characterized in that: The rubber wheel vulcanization mold is made of aluminum alloy, and a sealing line (21) is installed in the upper mold plate (16); and a rubber removal line (19) is installed in the middle mold plate (17).

10. A tire rubber performance testing method and dedicated equipment according to claim 5, characterized in that: Oil, water, ice and talcum powder media may be added into the friction disc assembly (2); The friction disc assembly (2) can accommodate the entire rubber wheel (9); The friction and wear test disc may be provided with friction lines; The cut-resistant test plate is provided with a plurality of stainless steel edges at equal intervals, the plurality of stainless steel edges are arranged in a circular ring shape, and the interval between two adjacent stainless steel edges is 15 mm; The bottom of the puncture resistance test plate is provided with five stainless steel rivet circles at equal intervals from the inside to the outside, and a plurality of stainless steel rivets are provided at equal intervals in the stainless steel rivet circles, and the interval between two adjacent stainless steel rivets is 15 mm.

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