^{Trackless electric transfer vehicle is a kind of energy with environmental protection and high conversion rate. Taking electricity as the application to drive the renewal of vehicles has the significance of energy conservation and environmental protection. It has strong climbing capacity and load capacity, and is suitable for all kinds of difficult road conditions. The equipment has brought convenience and benefits to our handling work}

^{When purchasing the trackless flat car, we will focus on its parameters. The basic parameters of the trackless flat car, the large underframe structure and the quality of the supply line need to meet the relevant requirements and the requirements for use on the standard gauge railway. Trackless flat car equipment is mainly used to transport large and heavy goods such as electric power, metallurgy, chemical equipment, heavy machinery, large castings and forgings.}

^{Generally, the large underframe of trackless flat car adopts welded structure, which is mainly composed of side beam, sleeper beam, large cross beam, small cross beam and floor. Electricity can also be customized for its underframe structure according to the user's needs, which will have an impact on the price of trackless flat car. The ladle car is also a kind of electric flat car. Its large underframe is mainly made of low-alloy structural steel, and the lower cover plate and web of sleeper beam are made of high-strength steel.}

^{When we customize the underframe structure of trackless flat car, we can calculate it according to the formula. Considering the symmetry of the large underframe of the trackless flat car in its structure and load, the 1 / 4 model electric flat car is taken for calculation. Because the large underframe of trackless flat car is mainly welded by plates, four node plate shell element is used in meshing, and triangular element is used in local transition. The discretization result of the model is that the overall element scale is 30mm and the local element is encrypted.}

^{Trackless flat car can solve the problems of manual handling fatigue and low work efficiency. It is a convenient tool for short-distance transportation. Its use has brought us a lot of convenience in handling. We also need to pay attention to its daily use and inspection, so that it can operate safely and normally.}

^{Customers visit our factory to check the AGV products}