Author: rui trailer Publish Time: 10-11-2018 Origin: Site
Steel bridges have the characteristics of light weight, large span and good rigidity, but they also have disadvantages. Their shortcomings are low low temperature resistance, poor fire resistance and easy corrosion, and must be continuously concerned about corrosion protection.
“Integration of large-sized hoisting and transporting” has become an unstoppable trend as a trend in the development of equipment hoisting. The transportation equipment spmt is the same as the lifting equipment. It is large and small, long and short.
Material transportation is an important activity in the social and economic development of mankind. In ancient times, following the emergence of commodity trading and market, people initially used the method of picking up sticks or rolling wood to transport goods. By 1500 BC, the two-wheeled chariot had become the primary war thing in ancient Egypt. In addition to war, wheeled vehicles are also used for daily shipments, greatly increasing the power of goods. Wheeled vehicles followed suit and gradually spread to Eurasia. In 1896, Daimler first produced a four-wheeled truck with a cargo capacity of 1.5 tons. However, due to the limited load capacity of the previous wheeled cars, railway trains have always been the primary equipment for land-based heavy cargo. The spmt transport provided by Rui trailer provides professional support for the installation and construction of steel bridges and provides assistance for the construction of transportation projects. After the outbreak of the First World War in 1914, countries invested a lot of resources to carry out heavy-duty vehicles for the transport of war materials. During World War II, Germany carried trailers for tanks, 6 axles and 12 wheels, with a load of 60 tons. Many developed flat-panel trucks in various countries laid the foundation for the development of civilian heavy-duty vehicles after the war.
By the mid-1970s, a self propelled modular transporters (spmt trailer) appeared, and a high-power diesel engine was directly mounted on the flatbed, and a hydraulic motor was added to some of the wheels to drive the vehicle. Since it is not necessary to steer the vehicle, the length of the transport fleet is greatly shortened, and the requirement for the turning radius of the road is lowered, and the vehicle passing ability is improved. In the early 1980s, the goldhofer self-propelled modular hydraulic trailer was initially launched. This type of modular planning and electronically controlled steering can be used for horizontal or vertical splicing of vehicles with a maximum load of several thousand tons. Modular transportation makes the transportation of large-scale roads even more powerful, and has been widely used in various construction projects.