CN108871815B - An all-weather, full-cycle tire performance testing method and equipment - Google Patents

Abstract

The invention discloses an all-weather full-period tire performance testing method and equipment, and belongs to the technical field of tire performance testing. The drum system of the equipment comprises a single drum, a drum shaft, a drum driving direct current motor, a transmission belt, a belt pulley, a belt cover plate and a supporting base; the tire rotating shaft system comprises a six-component force sensor system, a wheel shaft and a test tire; the tire lateral deflection and rolling adjusting system comprises a lateral deflection mechanism, a translation frame and a fixed frame; the electric heating and refrigerating system comprises an air conditioning room, a tire heat preservation room and a rotary drum heat preservation room; the spraying and humidifying system comprises a pump house, a tire heat preservation chamber nozzle and a rotary drum heat preservation chamber nozzle; the hydraulic system comprises a hydraulic loading subsystem and a hydraulic braking subsystem. The tyre can be used for testing the durability and rolling resistance performance under the working conditions of ice slip, water slip, high temperature, lateral deflection, side tilting, braking (starting) and the like until the tyre is tired and scrapped, so that all-weather and full-period tyre performance testing is realized.

Description

An all-weather, full-cycle tire performance testing method and equipment

Technical field

The invention relates to the technical field of tire performance testing, specifically an all-weather, full-cycle tire performance testing method and equipment.

Background technique

As the only ground-connected component of a car, the performance of tires directly affects the car's fuel economy, car maneuverability, car safety and other performances. In the process of developing and manufacturing tires, it is necessary to test the tire performance to ensure that the design and use performance indicators of the tire comply with the relevant tire manufacturing standards and testing performance standards. Tire performance testing includes rolling resistance testing, durability/high-speed performance, inclination and deflection performance and other performance tests. These tests are mainly completed on indoor tire performance testing machines. The current main testing equipment for the above performance is: Tire rolling resistance testing machine is used to accurately measure the rolling resistance of sedan, light-duty and truck tires. The main testing machines include Tianjin Jiurong Tire Rolling Resistance Testing Equipment, National Standard Laboratory ( STL) rolling resistance equipment, American TMSI company's rolling resistance equipment, American MTS company's drum type and flat belt type rolling resistance testing equipment, etc.; inclination and declination performance testing machine: used for car/light truck tire inclination and declination performance And high-speed durability performance testing; tire durability/high-speed performance testing machine: used for tire safety performance testing, mainly used for tire durability/high-speed performance testing.

The above instruments and equipment are relatively complete in terms of testing functions, and there are certain testing standards to support the testing methods. However, as society, users and enterprises continue to improve tire performance requirements, the current tire performance testing generally has the following problems:

(1) The function of the equipment is relatively simple. Each equipment can only test 1-2 properties of tires. Different equipment or testing stations require different tires. That is, multiple properties of concern cannot be tested on one tire, which is easy to cause .

(2) The current testing equipment cannot test the tire's wet skid resistance and performance on ice and snow roads.

The above problems reflect the current lack of an effective method and equipment for all-weather, full-cycle tire performance testing. In response to the above problems, the present invention provides an all-weather, full-cycle tire performance testing method and equipment, aiming to solve the problem that the current tire performance testing equipment has a single function, cannot test multiple properties based on one tire on one device, and cannot test tires. In order to solve the deficiencies in wet skid resistance and performance on ice and snow roads, we provide testing solutions to test multiple properties based on one tire on a testing machine, more accurately characterize tire performance, and avoid using multiple tires to test different properties of the same batch of tires. Disadvantages, overcome various errors caused by manufacturing and selection implied by testing different performance of multiple tires, and improve the feasibility and rationality of tire performance test results.

Contents of the invention

The purpose of the present invention is to provide an all-weather, full-cycle tire performance testing method and equipment to solve the problem that the tire performance testing equipment proposed in the above background technology has a single function and cannot test multiple properties based on one tire on one device. Issues such as tire resistance to wet skids and performance on icy and snowy roads.

In order to achieve the above objectives, the present invention provides the following testing and technical solutions: an all-weather, full-cycle tire performance testing equipment mainly includes a drum system, a tire rotating axis system, a tire roll adjustment system, electric heating and electric refrigeration. system, spray and humidification system, hydraulic system.

The drum system includes a single roller drum, roller shaft, drum drive DC motor, transmission belt, pulley, belt cover and support base. The drum driving DC motor is installed on the upper part of the frame. The single roller drum is installed on the support base through the roller shaft. One end of the roller shaft is connected to the pulley. The drum driving DC motor drives the pulley through the transmission belt to drive the single roller. The drum spins.

The tire rotation axis system includes a six-component force sensor system, wheel axle, and test tire. The tire six-component force sensor is installed on the wheel axle, and the test tire is installed on the front section of the wheel axle. When the single roller drum rotates, it drives the test tire to rotate. The tire rotation axis system is installed on the side deflection mechanism.

The tire roll adjustment system includes a roll mechanism, a roll mechanism, a translation frame and a fixed frame. The tilt mechanism is connected to the tilt drive cylinder, and the other end of the tilt drive cylinder is connected to the translation frame. The side deflection mechanism is connected to the side deflection drive cylinder, and the other end of the side deflection drive cylinder is connected to the roll mechanism. The translation frame is connected to the fixed frame through a translation drive cylinder. Driven by the translation drive cylinder, the translation frame moves along the fixed frame to the single roller drum with the tilting mechanism, side deflection mechanism and tire rotation axis system.

The electric heating and electric refrigeration system mainly includes the air conditioning room, tire insulation room and drum insulation room. The air-conditioning room is connected to the tire insulation room and drum insulation room through air supply ducts.

The spray and humidification system mainly includes pump room, tire insulation room nozzles and drum insulation room nozzles. The tire insulating room nozzle is installed in the tire insulating room, the drum insulating room nozzle is installed in the drum insulating room, the tire insulating room nozzle and the drum insulating room nozzle are connected to the pump room through pipelines.

The hydraulic system mainly includes hydraulic loading subsystem and hydraulic braking subsystem. The hydraulic loading subsystem mainly includes roll drive cylinder, side deflection drive cylinder and translation drive cylinder. The hydraulic braking subsystem includes hydraulic fixed-caliper disc brakes. Hydraulic fixed caliper disc brakes are mounted on the support base and roller shaft.

Compared with existing methods and technologies, the beneficial effects of the present invention are:

An all-weather, full-cycle tire performance testing method and equipment, which can realize rolling resistance testing, tire durability testing, and tire durability testing under the combination of verticality, side deflection, roll or side roll of the tire and the road surface, and testing the tire in wet and slippery conditions. Performance testing on icy roads, rolling resistance testing of tires at different temperatures and humidity. After setting the side slip angle, roll angle, test temperature and humidity, and road surface characteristics (slippery, icy), relevant performance tests can be performed. The effects of ambient temperature and ground contact angle on tire performance during tire testing have been added. During the test, the temperature and humidity of the environment where the test tire and the single-roller drum are located can be controlled and adjusted separately to simulate different ground temperatures and tire working environment temperatures, solving the problem that existing test methods and equipment can only test performance at room temperature or specified temperatures. Test; the surface of the single-roller drum can be changed to simulate dry, wet, and icy road surfaces. Not only can the tire be in vertical contact with the road, but it can also be in downward contact with the road at a certain slip angle or/and camber angle. Therefore, the tire performance test can be carried out under single or combined working conditions such as ice slip, water slip, high temperature, side deflection, roll, braking (starting), etc., until the tire is scrapped due to fatigue. By using one tire on one piece of equipment, all-weather and full-cycle tire performance testing can be achieved, avoiding the disadvantages of using multiple tires to test different performance of the same batch of tires, and improving the feasibility and rationality of tire performance test results.

Description of drawings

Figure 1 is a schematic diagram of the overall structure of the present invention;

Figure 2 is a schematic layout diagram of the rotating drum system of the present invention;

Figure 3 is a schematic structural diagram of the transmission part of the drum system of the present invention;

Figure 4 is a schematic layout diagram of the hydraulic braking subsystem of the present invention;

Figure 5 is a schematic layout diagram of the tire rotation axis system of the present invention;

Figure 6 is a schematic diagram of the arrangement of the roll drive cylinder and the translation drive cylinder of the present invention;

Figure 7 is a schematic diagram of the layout of the side deflection drive cylinder of the present invention;

Figure 8 is a schematic layout diagram of the electric heating and electric refrigeration system of the present invention;

Figure 9 is a schematic layout diagram of the spray and humidification system of the present invention.

In the picture: 101. Single roller drum, 102. Roller shaft, 103. Drum driving DC motor, 104 transmission belt, 105 pulley, 106 belt cover, 107 support base, 201. Six-component force sensor, 202 vehicle Axle, 203 test tire, 301 roll drive cylinder, 302 translation frame, 401 roll drive cylinder, 501 translation drive cylinder, 502 fixed frame, 6. Air conditioning room, 7. Tire insulation room, 8. Drum insulation room, 9. Pump room, 10. Tire insulation room nozzle, 11. Drum insulation room nozzle, 12. Hydraulic fixed clamp disc brake.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.

Please refer to Figures 1-9. The present invention provides a technical solution: an all-weather, full-cycle tire performance testing method and equipment. The overall system mainly includes a drum system, a tire rotation axis system, a tire roll adjustment system, and an electric heating system. and electric refrigeration system, spray and humidification system, hydraulic system.

The drum system includes a single-roller drum 101, a roller shaft 102, a drum driving DC motor 103, a transmission belt 104, a pulley 105, a belt cover 106 and a support base 107. The drum driving DC motor 103 is installed on the upper part of the frame. The single roller drum 101 is installed on the support base 107 through the roller shaft 102. One end of the roller shaft 102 is connected to the pulley 105. The drum driving DC motor 103 passes through the transmission belt 104. The driving pulley 105 in turn drives the single-roller drum 101 to rotate.

The tire rotation axis system includes a six-component force sensor 201, a wheel axle 202, and a test tire 203. The tire six-component force sensor 201 is installed on the wheel axle 202, and the test tire 203 is installed on the front section of the wheel axle 202. When the single roller drum 101 rotates, the test tire 203 is driven to rotate.

The tire roll adjustment system includes a roll mechanism, a roll mechanism, a translation frame 302 and a fixed frame 502 . The tilting mechanism is connected to the tilting driving cylinder 301, and the other end of the tilting driving cylinder 301 is connected to the translation frame 302. The side-turning mechanism is connected to the side-turning driving cylinder 401, and the other end of the side-turning driving cylinder 401 is connected to the rolling mechanism. The translation frame 302 is connected to the fixed frame 502 through a translation driving cylinder 501 . The tire rotation axis system is installed on the side deflection mechanism. Under the push of the translation drive cylinder 501, the translation frame 302 moves along the fixed frame 502 toward the single-roller drum 101 with the tilting mechanism, the side deflection mechanism and the tire rotation axis system.

The electric heating and electric refrigeration system mainly includes an air conditioning room 6, a tire insulation room 7 and a drum insulation room 8. The air-conditioning room 6 is connected to the tire insulation room 7 and the drum insulation room 8 through the air supply duct.

The spray and humidification system mainly includes the pump room 9, the tire insulation room nozzle 10 and the drum insulation room nozzle 11. The tire insulating room nozzle 10 is installed in the tire insulating room 7, and the drum insulating room nozzle 11 is installed in the drum insulating room 8. The tire insulating room nozzle 10 and the drum insulating room nozzle 11 are connected to the pump room 9 through pipes.

The hydraulic system mainly includes hydraulic loading subsystem and hydraulic braking subsystem. The hydraulic loading subsystem mainly includes a roll drive cylinder 301, a side drive cylinder 401, and a translation drive cylinder 501. The hydraulic braking subsystem includes hydraulic fixed caliper disc brakes 12 . The hydraulic fixed caliper disc brake 12 is installed on the support base 107 and the roller shaft 102.

The working principle and working process of the present invention are:

When the system is working, the test conditions are first set according to the test project content and requirements. The main conditions include temperature, humidity, road surface characteristics, roll angle, slip angle, speed, contact pressure, etc. The electric heating and electric refrigeration system sends circulating air of suitable temperature into the tire insulation room 7 and the drum insulation room 8 through the fan to keep the temperature in the tire insulation room 7 and the drum insulation room 8 consistent with the set temperature. In the spray and humidification system, the tire insulation room nozzle 10 adjusts the humidity of the tire insulation room 7, the drum insulation room nozzle 11 adjusts the humidity of the drum insulation room 8, and combines the electric heating and electric refrigeration systems to adjust the drum insulation room 8 According to the internal temperature, the surface of the single-roller drum 101 is sprayed to simulate a slippery road surface, or an ice surface is formed to simulate an icy road surface according to the test requirements.

According to the requirements of the test project, the side roll angle is further set. If it is necessary to test the performance of the tire under the combined action of side deflection, roll or side roll, it is necessary to set the side slip or roll angle, and push the roll mechanism through the roll drive cylinder 301 to set the roll angle. The yaw drive cylinder 401 pushes the yaw frame to set the yaw angle. If the tire is in vertical contact with the road surface, the adjustment angles of the roll mechanism and the side deflection mechanism are both 0.

After the test requirements such as temperature, humidity, road surface characteristics, roll angle, and side slip angle are set, the translation drive cylinder 501 drives the translation frame 302 to move along the fixed frame 502 to the single roller along with the roll mechanism and the roll mechanism. The drum 101 is rotated, and under the pressure provided by the translation driving cylinder 501, the test tire 203 and the single-roller drum 101 are contacted according to the set pressure load.

Start the drum driving DC motor 103. The drum driving DC motor 103 drives the pulley 105 through the transmission belt 104 to drive the single-roller drum 101 to rotate. The single-roller drum 101 drives the test tire 203 to rotate at a set speed.

At this time, tire rolling resistance testing, tire durability testing, tire performance testing on slippery and icy roads, or durability testing can be performed.

The entire equipment maintains normal test operation. The six-component force sensor system 201 measures the contact pressure between the test tire 203 and the single-roller drum 101 and the tangential force between the contact surfaces. The tangential force between the contact surfaces is the rolling force. Resistance, the ratio of the tangential force between the contact surfaces and the contact pressure is the rolling resistance coefficient.

Under normal operating conditions of the drum, after the test is completed, the general drum driving DC motor 103 stops running, and the single-roller drum 101 stops slowly without the need for active braking. Hydraulic braking is only activated during emergency braking. The hydraulic fixed-caliper disc brake 12 is controlled by the hydraulic system, and the single-roller drum 101 is braked by applying force along the axial direction of the hydraulic fixed-caliper disc brake 12 .

A tire can be tested on this equipment for durability and rolling resistance performance under single or combined working conditions such as ice slip, water slip, high temperature, side deflection, roll, braking (starting), etc., until the tire is scrapped due to fatigue. All-weather, full-cycle tire performance testing avoids the disadvantages of using multiple tires to test different properties of the same batch of tires, and improves the feasibility and rationality of tire performance test results.

Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art will understand that various changes, modifications, and substitutions can be made to these embodiments without departing from the principles and spirit of the invention. and modifications, the scope of the invention is defined by the appended claims and their equivalents.

Claims (3)

1. An all-weather, full-cycle tire performance testing equipment, characterized by including a drum system, a tire rotation axis system, a tire roll adjustment system, an electric heating and electric refrigeration system, a spray and humidification system, and a hydraulic system ; Wherein, the drum system includes a single roller drum (101), a roller shaft (102), a drum driving DC motor (103), a transmission belt (104), a pulley (105), and a belt cover (106 ) and a support base (107); the tire rotation axis system includes a six-component force sensor (201), a wheel axle (202), and a test tire (203); the tire roll adjustment system includes a roll mechanism, a side roll Bilateral mechanism, translational frame (302) and fixed frame (502); the electric heating and electric refrigeration system includes an air conditioning room (6), a tire insulation room (7) and a drum insulation room (8); the spray The humidification system includes a pump room (9), a tire insulation room nozzle (10) and a drum insulation room nozzle (11); the hydraulic system includes a hydraulic loading subsystem and a hydraulic braking subsystem, and the hydraulic loading subsystem includes Rolling drive cylinder (301), side deflection drive cylinder (401), translation drive cylinder (501), the hydraulic braking subsystem includes a hydraulic fixed clamp disc brake (12); a drum driving DC motor (103) is installed On the upper part of the translational frame (302), the single-roller drum (101) is installed on the support base (107) through the roller shaft (102). One end of the roller shaft (102) is connected to the pulley (105), and the drum The DC motor (103) drives the pulley (105) through the transmission belt (104) to drive the single-roller drum (101) to rotate; the six-component force sensor (201) is installed on the wheel axle (202), and the test tire (203) Installed on the front section of the wheel axle (202), the single roller drum (101) drives the test tire (203) to rotate when it rotates; the roll mechanism is connected to the roll drive cylinder (301), and the other side of the roll drive cylinder (301) One end is connected to the translation frame (302); the side deflection mechanism is connected to the side deflection drive cylinder (401), and the other end of the side deflection drive cylinder (401) is connected to the roll mechanism; the translation frame (302) is driven by the translation cylinder (401) 501) is connected to the fixed frame (502); the tire rotation axis system is installed on the side deflection mechanism; the air conditioning room (6) is connected to the tire insulation room (7) and the drum insulation room (8) through the air supply duct; the tire insulation room The nozzle (10) is installed in the tire insulating room (7), the nozzle (11) in the drum insulating room is installed in the drum insulating room (8), the tire insulating room nozzle (10) and the drum insulating room nozzle (11) pass through The pipeline is connected to the pump room (9); the hydraulic fixed clamp disc brake (12) is installed on the support base (107) and the roller shaft (102); The six-component force sensor (201) respectively measures the contact pressure between the test tire (203) and the single roller drum (101) and the tangential force between the contact surfaces. The tangential force between the contact surfaces is the rolling resistance. The ratio of the tangential force between the contact surfaces and the contact pressure is the rolling resistance coefficient; In the spray and humidification system, the tire insulation room nozzle (10) adjusts the humidity of the tire insulation room (7), and the drum insulation room nozzle (11) adjusts the humidity of the drum insulation room (8). It combines electric heating and electric heating. The refrigeration system adjusts the internal temperature of the drum insulation room (8), and sprays the surface of the single-roller drum (101) to simulate a slippery road surface, or forms an ice surface to simulate an icy road surface according to the test requirements. 2. An all-weather, full-cycle tire performance testing equipment according to claim 1, characterized in that: the translational drive cylinder (501) drives the translational frame (302) along with the tilting mechanism and the sideways mechanism along the fixed The frame (502) moves to the single-roller drum (101), and under the pressure provided by the translation drive cylinder (501), the test tire (203) and the single-roller drum (101) are contacted according to the set pressure load . 3. An all-weather, full-cycle tire performance testing equipment according to claim 1, characterized in that: the roll drive cylinder (301) drives the roll mechanism to set the roll angle, and the roll drive cylinder (401) ) Push the side slip frame to achieve the set side slip angle. If the tire is in vertical contact with the road surface, the adjustment angles of the roll mechanism and the side slip mechanism are both 0.