A method for testing outdoor performance of rubber tracks

Abstract

The invention discloses an outdoor performance testing method for a rubber track, including a rubber track wear performance test and a rubber track edge breaking durability test. The rubber track wear performance test lasts for 100 hours and is divided into four stages, with each stage lasting 25 hours. After each stage is completed, the measurement data is recorded according to a prescribed method, and the rubber track wear data can be accurately tested. The rubber track edge breaking durability test is performed by repeatedly rolling the track over a curbstone until the edge breaks, so as to test the durability of the rubber track.

Description

Technical Field

[0001] The invention relates to the field of rubber tracks, and in particular to a method for testing the outdoor performance of rubber tracks. Background Art

[0002] A rubber track is a crawler-type running component with a certain amount of metal and steel cord embedded in a rubber belt. It is widely used in construction machinery, agricultural machinery, and military equipment. It can evenly distribute the weight of the vehicle on the ground it contacts, preventing the vehicle from sinking into the ground. The track surface can be completely attached to the ground, and it can also greatly improve the vehicle's grip. It has many advantages, such as high speed, minimal damage to the road surface, low ground pressure, and light weight.

[0003] As the use of rubber tracked vehicles becomes more and more popular, the performance requirements for rubber tracks are also constantly improving. Rubber tracks are developing towards diversification and complete specifications. Improving the service life of rubber tracks has become increasingly important. Testing the wear of rubber tracks during use can provide experimental data for research on improving the life of rubber tracks, and can also evaluate the performance of newly developed rubber track products. However, there is currently no relatively mature solution for how to accurately test the performance of rubber tracks during road use.

[0004] Among many test methods, the vehicle-following test is the most commonly used test item for rubber tracks. The test method is to install different types of rubber tracks on different crawler vehicle running mechanisms. The tracks are used as the vehicles run. When the tracks have traveled a specified mileage or a specified time, the problems that occur during the driving process of the rubber tracks are checked to determine the fatigue durability and wear performance of the product. Since this method has too many uncontrollable factors and it is impossible to collect corresponding test data in a timely manner to guide product research and development design, resulting in high product research and development costs and long cycles, it is urgent to develop a standardized rubber track road test method to accurately evaluate the actual performance of rubber tracks. Summary of the Invention

[0005] In order to standardize the road test method of rubber tracks and accurately evaluate the actual performance of rubber tracks, the present invention provides an outdoor performance test method for rubber tracks, which can collect corresponding experimental data in a timely manner and accurately test the performance of the tracks during road use.

[0006] The technical solution provided by the present invention is as follows: a method for outdoor performance testing of a rubber track, including a rubber track wear performance test and a rubber track edge breaking durability performance test;

[0007] The rubber track wear performance test comprises the following steps:

[0008] S11. Installing the track to be tested on a test vehicle;

[0009] S12, driving the experimental vehicle once along a preset route;

[0010] S13, repeating S12 until the preset time is reached;

[0011] S14. Investigate the condition of the test track and record the measurement data;

[0012] S15, repeat S12-S14 until the preset number of times is reached;

[0013] S16, statistical analysis of the measurement data obtained;

[0014] The rubber track edge breaking durability test includes the following steps:

[0015] S21. Installing the test track on the test vehicle;

[0016] S22, rolling one side of the test vehicle equipped with the test track onto a curb;

[0017] S23, control the test vehicle to first move backward over the curb and then move forward over the curb to return to the original position. One round trip is counted as one curb run. The vehicle speed is maintained at gear 1.

[0018] S24, repeating step S23 until the rubber track is broken, wherein the broken edge is a crack on the rubber track contact surface and the crack depth reaches the internal steel cord or iron teeth;

[0019] S25. Record the total number of times the track rolls over the curb when reaching the broken edge.

[0020] Furthermore, the preset route in step S12 includes a first route, a second route, and a third route. The road surface of the first route is a gravel road surface with a road surface length of 40m. The first section of the first route is a broken line, running from one end of the road surface to the other end. The test vehicle travels forward and completes 5 flat turns with a turning angle of 80-150°. The second section of the first route is a straight line. The test vehicle travels forward and travels back and forth on the road surface. The third section of the first route is a straight line. The test vehicle travels backward and travels back and forth on the road surface. The speed of the test vehicle on the first route is maintained at first gear.

[0021] The road surface of the second route is an ordinary gravel road with a road length of 40m. The first section of the second route is a broken line. The test vehicle moves forward in a continuous flat turn manner with a turning angle of 80-150° and travels back and forth on the road surface. The second section of the second route is a broken line. The test vehicle moves backward in a continuous flat turn manner with a turning angle of 80-150° and travels back and forth on the road surface. The third section of the second route is a straight line. The test vehicle moves forward and back on the road surface and uses a spoil board for ground preparation operations. Among them, the test vehicle speed of the second route is maintained at 1st gear. When the vehicle is at both ends of the road surface, it needs to rotate in place for one circle before driving;

[0022] The third route is an ordinary gravel road with a road length of 50m. The third route is a straight line. The test is to drive forward and backward on the road for 3 round trips respectively, and the vehicle speed is maintained at 2nd gear.

[0023] Furthermore, the preset time in step S13 is 25 hours, and the preset number of times in step S15 is 4 times.

[0024] Furthermore, the investigation items for testing the crawler in step S14 include the durability of the pattern blocks. Before and after each execution of steps S12-S13, the crawler pattern blocks need to be photographed, and the outer dimensions of the pattern blocks need to be measured and recorded using a vernier caliper.

[0025] Furthermore, the investigation items for testing the crawler track also include the wear resistance of the iron teeth. Before and after executing steps S12-S15, it is necessary to use a vernier caliper to measure and record the external dimensions of the crawler track iron teeth.

[0026] Furthermore, the investigation items for testing the track also include the track's resistance to wheel detachment. In step S14, the track slack, that is, the maximum distance the track sags between the two wheels, is measured and recorded, and the total number of track wheel detachments during the execution of S12-S15 is counted.

[0027] Furthermore, the investigation items of the test track also include the internal fatigue characteristics of the track. After step S15, the test track needs to be dissected and investigated. The investigation content includes the bonding state of the iron teeth, whether there is any breakage, and the bonding and damage of the steel cords.

[0028] Furthermore, in step S22, for rubber tracks of different specifications, the width of the curb will be different, but each time the track is driven, it must be ensured that the edge of the curb is close to the edge of the iron teeth. The dimensions of the curb are: height 100 mm, width 170 mm, and length 1000 mm.

[0029] Compared with the prior art, the present invention has the following advantages:

[0030] 1. The rubber track wear performance test is designed with a variety of experimental routes under different working conditions, which are close to the actual complex usage conditions, and the experimental results are more valuable for reference;

[0031] 2. The rubber track wear performance test design includes a variety of data, which can fully reflect the wear of the rubber track;

[0032] 3. The rubber track edge breaking durability test is easy to operate and improves experimental efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 This is the circuit diagram for testing the wear performance of rubber tracks;

[0034] Figure 2 The contact position diagram between the track and the curb;

[0035] Among them, 1. Rubber tracks; 2. Curbstones. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0037] In the description of this application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0038] This embodiment provides the following technical solutions to existing technical problems: a method for outdoor performance testing of rubber tracks, including a method for testing the wear performance of rubber tracks and a method for testing the durability of rubber track edge breakage. The wear performance test of the rubber tracks is conducted for a total of 100 hours, divided into four stages. Each stage is consistent and takes 25 hours. In each stage, a test vehicle equipped with the track to be tested drives in a cycle along the first route, the second route, and the third route. During the test, the tread blocks are photographed and measured using a vernier caliper every 25 hours, and the outer dimensions of the iron teeth are measured with a vernier caliper before and after each stage. The number of times the track wheel comes off is recorded throughout the vehicle's driving process. After the test is completed, a block wear table is made to analyze and evaluate the degree of damage to the blocks; the wear of the iron teeth is recorded and analyzed; the total number of wheel derailment of the track is counted and the derailment resistance of the track is analyzed; the rubber track is dissected and the bonding state of the iron teeth, whether there is any breakage, and the bonding and damage of the steel cord are recorded. The above survey items are comprehensively analyzed to comprehensively evaluate the wear performance of the test track.

[0039] Among them, reference Figure 1 There are three different routes. The preset routes in step S12 include a first route, a second route and a third route. The road surface of the first route is a gravel road with a road length of 40m. The first section of the first route is a broken line, which runs from one end of the road to the other end. The test vehicle drives forward and completes 5 flat turns with a turning angle of 80-150°. The second section of the first route is a straight line. The test vehicle drives forward and travels back and forth on the road. The third section of the first route is a straight line. The test vehicle drives backward and travels back and forth on the road. The speed of the test vehicle of the first route is maintained at 1st gear. The road surface of the second route is an ordinary gravel road with a road length of 40m. The first section of the second route is a broken line. The test vehicle drives forward and travels back and forth on the road with a continuous flat turn. The test vehicle moves forward in a turning manner with a turning angle of 80-150° and travels back and forth on the road surface. The second section of the second route is a broken line. The test vehicle moves backward in a continuous flat turning manner with a turning angle of 80-150° and travels back and forth on the road surface. The third section of the second route is a straight line. The test vehicle moves forward and back on the road surface and uses a spoil plate for ground leveling. The speed of the test vehicle on the second route is maintained at 1st gear. When the vehicle is at both ends of the road surface, it needs to rotate in place before moving. The third route is an ordinary gravel road with a road length of 50m. The third route is a straight line. The test vehicle drives forward and backward on the road surface 3 times each. The vehicle speed is maintained at 2nd gear. The three different routes can simulate various complex routes in real use, so that the test results can accurately reflect the wear resistance of the rubber track.

[0040] The test device for the durability performance of the rubber track edge breaking is composed of a rubber track 1, a test machine and a curb 2. The specific process is as follows: the machine equipped with the rubber track 1 to be tested is rolled onto the curb 2, the speed is adjusted to gear 1, and the machine moves backward after rolling over the curb and then moves forward to return to the original position. This action is counted as one time. This action is repeated until the crack of the rubber track reaches the internal steel cord or iron teeth, which is considered edge breaking. At this time, the number of action repetitions is counted. By comparing the number of action repetitions, the durability of the rubber track can be reflected.

[0041] The above is a description of the embodiments of the present application. Through the above description of the disclosed embodiments, professionals and technicians in this field can implement or use the present application. Various modifications to these embodiments will be obvious to professionals and technicians in this field. The general principles defined in this article can be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application will not be limited to the embodiments shown in this article, but will conform to the widest scope consistent with the principles and novel points disclosed in this article.

Claims

1. A method for testing the outdoor performance of a rubber track, characterized in that: The method includes a rubber track wear performance test and a rubber track edge breaking durability test; The rubber track wear performance test comprises the following steps: S11. Installing the track to be tested on a test vehicle; S12, driving the experimental vehicle once along a preset route; S13, repeating S12 until the preset time is reached; S14. Investigate the condition of the test track and record the measurement data; S15, repeat S12-S14 until the preset number of times is reached; S16, statistical analysis of the measurement data obtained; The rubber track edge breaking durability test includes the following steps: S21. Installing the test track on the test vehicle; S22, rolling one side of the test vehicle equipped with the test track onto a curb; S23, control the test vehicle to first move backward over the curb and then move forward over the curb to return to the original position. One round trip is counted as one curb run. The vehicle speed is maintained at gear 1. S24, repeating step S23 until the rubber track is broken, wherein the broken edge is a crack on the rubber track contact surface and the crack depth reaches the internal steel cord or iron teeth; S25. Record the total number of times the track rolls over the curb when reaching the broken edge.

2. A rubber track outdoor performance testing method according to claim 1, characterized in that: The preset routes in step S12 include a first route, a second route, and a third route. The road surface of the first route is a gravel road surface with a length of 40 meters. The first section of the first route is a broken line, running from one end of the road surface to the other end. The test vehicle travels forward and completes five flat turns with a turning angle of 80-150 degrees. The second section of the first route is a straight line. The test vehicle travels forward and back on the road surface. The third section of the first route is a straight line. The test vehicle travels backward and back on the road surface. The speed of the test vehicle on the first route is maintained at first gear. The road surface of the second route is an ordinary gravel road with a road length of 40m. The first section of the second route is a broken line. The test vehicle moves forward in a continuous flat turn manner with a turning angle of 80-150°, and needs to move back and forth on the road surface. The second section of the second route is a broken line. The test vehicle moves backward in a continuous flat turn manner with a turning angle of 80-150°, and needs to move back and forth on the road surface. The third section of the second route is a straight line. The test vehicle moves forward and back on the road surface and uses a spoil board for ground preparation operations. Among them, the test vehicle speed of the second route is maintained at 1st gear. When the vehicle is at both ends of the road surface, it needs to rotate in place for one circle before driving; The third route is an ordinary gravel road with a road length of 50m. The third route is a straight line. The test is to drive forward and backward on the road for 3 round trips respectively, and the vehicle speed is maintained at 2nd gear.

3. A rubber track outdoor performance testing method according to claim 1, characterized in that: The preset time in step S13 is 25 hours, and the preset number of times in step S15 is 4 times.

4. A rubber track outdoor performance testing method according to claim 1, characterized in that: The crawler track test in step S14 includes the durability of the segments. Before and after each execution of steps S12-S13, the crawler segments need to be photographed, and the external dimensions of the segments need to be measured and recorded using a vernier caliper.

5. The outdoor performance testing method of a rubber crawler according to claim 1, characterized in that: The crawler track test also includes the wear resistance of the iron teeth. Before and after executing steps S12-S15, it is necessary to use a vernier caliper to measure and record the external dimensions of the crawler track teeth.

6. A method for testing outdoor performance of a rubber track according to claim 1, characterized in that: The investigation items for testing the crawler track also include the crawler track's resistance to wheel detachment. In step S14, the slack of the crawler track, that is, the maximum distance the crawler track sags between the two wheels, is measured and recorded. At the same time, the total number of crawler track wheel detachments during the execution of S12-S15 is counted.

7. The outdoor performance testing method of a rubber crawler according to claim 1, characterized in that: The test track also includes internal fatigue characteristics of the track. After step S15, the test track needs to be dissected and investigated. The investigation content includes the bonding state of the iron teeth, whether there is any breakage, and the bonding and damage of the steel cords.

8. The method for testing the edge-breaking durability of a rubber track according to claim 1, wherein: In step S22, for rubber tracks of different specifications, the width of the curbstone will be different, but each time the track is driven, it must be ensured that the edge of the curbstone is close to the edge of the iron teeth. The dimensions of the curbstone are: height 100 mm, width 170 mm, and length 1000 mm.

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