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Structural Design of Military Off-road Radial Tire with Large Size, High Speed and Adapt to Ultra-low Pressure Driving
2024/11/19
In modern war, the requirements of military off-road vehicle's combat adaptability, mobility and rapid response ability are higher and higher, and the requirements of military off-road vehicle tire performance are also improved accordingly. Traditional bias tires can no longer meet the requirements of military off-road vehicles for tire performance, and the radial requirements of military off-road vehicle tires are becoming more and more urgent. Although the domestic light and medium-sized military off-road tires have been partially realized meridional, due to various reasons, the large-size off-road tires used in domestic heavy-duty military off-road vehicles still adopt the bias structure. This situation seriously restricts the development of China's heavy-duty military off-road vehicles and the actual combat performance of related military equipment. Therefore, according to the requirements of the military, we have developed a large tubeless military off-road radial tire with high speed and ultra-low pressure to meet the performance requirements of the military's heavy-duty military off-road vehicles. The design is introduced as follows.
The outer contour is designed to ensure good passability of off-road tires, and the tire driving surface is designed to be appropriately wider, so that the ground pressure can be reduced to adapt to ultra-low air pressure driving on soft-base roads. At the same time, due to the large driving surface height of off-road tires, a three-segment arc design is adopted, that is, the radius of the main driving surface is larger, and the radius of the transition arc on both sides is smaller. In this way, when driving under good road pressure (general military off-road tire use gas company engineers, they are mainly engaged in the development, design and process of military off-road radial tires. There are two types of road pressure and off-road pressure, and the road pressure is slightly higher than the off-road pressure) The tire contact surface is small, the rolling resistance is small, and its high-speed performance can be exerted; while the tire contact surface is large when driving with off-road pressure when driving with off-road pressure, it can improve the passing performance of tires on soft ground. In addition, when the tire is running on a soft-base road at ultra-low air pressure, most of the sidewalls above the horizontal axis have touched the ground, and the shoulder position is prone to generate stress concentration areas, while the sidewalls below the horizontal axis near the rim flange have been The rim pressure is easy to damage the sidewall. Therefore, in order to reduce the excessive stress concentration at the shoulder and make the sidewall grounding part and the crown smooth and excessive, the shoulder adopts a large arc design; the sidewall curve radius below the horizontal axis is appropriately larger to enhance the rim The support of the sidewall at the upper end of the rim (see).
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