Crawler transport vehicles can transport large and heavy equipment and partially displaced open-pit mining equipment. Its core technology has long been in the hands of a few foreign companies. At present, the crawler transport vehicles used in China are imported from abroad, and the equipment purchase and maintenance costs are high. , seriously restricting the process of large-scale development of open-pit mines in my country. In order to break through this restriction, our company independently developed crawler transport vehicles with high carrying capacity.
The main components of the crawler truck include the engine, lifting platform, driver's cab, base and crawler walking device. The combination of crawler frame and base welded by the crawler walking device is called the lower steel structure, which is a key structural component of the whole machine, not only to carry the weight of the equipment carried, but also to bear the self-weight of the engine, lifting platform and other components of the equipment, whose strength analysis is very important in the overall design.
In order to ensure that the equipment can still operate normally under extreme conditions, the actual situation of the equipment working on site should be fully considered. The crawler is mainly used for carrying or pulling heavy loads and is mainly divided into straight ahead, climbing, turning and other situations. As it can only carry or pull heavy loads alone, the two cannot be carried out at the same time; in addition, turning is not allowed when carrying heavy loads climbing a slope. For this reason, the three operating conditions of load climbing, traction climbing and one-sided turning are defined as the extreme operating conditions of the crawler. At the same time, when carrying heavy loads, the centre of gravity of the load is required to be kept within a safety radius (to prevent the equipment from tipping over), which can be determined by the tipping boundary line of a rigid double-tracked travel device, taking into account a safety factor of not less than 1.5.