According to the basic models of all types of Dongfeng coaches currently produced in China, most of them are designed to meet the specific requirements of certain services in the national economy. Based on the chassis of the established basic models, the design of the body and the work equipment is mainly carried out. At the same time, the local structure and performance of the assembly of the site are partially modified and reasonably matched so as to achieve an ideal vehicle performance that satisfies the usage requirements. The so-called car chassis usually refers to the rest of the body outside the body. The engine system, transmission system, traveling system, suspension system, and steering and braking system are installed on the frame. The basic chassis used by Chu Feng coach vehicles can be divided into two, three and four types of chassis according to the structural composition. Remove the container unit from the basic vehicle as a second-class chassis. Remove the cab and cargo box from the basic vehicle as the three types of chassis, and remove the remaining parts of the frame assembly on the three types of chassis as the four types of chassis. This shows that according to the needs of the vehicle's structure, what type of chassis is used is a prerequisite for the selection and design of special-purpose vehicle assemblies. The preconditions are different. The content of the diesel coach vehicle assembly selection design is also different. Specific can be divided into three situations: 1. Modified design using the second type of chassis At present, almost 80% of the pointed trainer vehicles adopt the second type of chassis for the refitting design, that is, installation of various working devices and special bodies such as various types of dump trucks, tank cars, etc. The focus of the design of the second type of chassis modification is the design of the container and the working device, and only the performance adaptability analysis and the necessary strength check are performed for the chassis. 2. Modified design using three types of chassis Because the three types of chassis do not have their own bodies, the special vehicles converted from the three types of chassis are mainly large, medium and small passenger vehicles, box trucks or passenger and cargo vehicles. In recent years, the development of passenger cars in China has been rapid, and the performance requirements for passenger vehicles have been continuously improved. Passenger cars modified with the old three types of chassis have become increasingly unpopular. Therefore, the chassis of all kinds of special passenger cars has emerged. . The basic characteristics of the chassis of these special passenger vehicles are to use the basic type assembly, re-arrange the entire vehicle according to the performance requirements of the passenger car, and redesign the suspension system. It not only distributes the center of mass, but also the performance of the entire vehicle, but also in the drive system and power matching, as well as the braking system and other assembly have great changes and larger retrofit design. 3. The retrofit design using four types of chassis is as described above. The four types of chassis are a collection of parts in the form of parts of each chassis assembly. The nine-meter coach vehicles modified with four types of chassis are mainly special structures designed for special operations, such as various lifting and transport vehicles, various types of construction machinery, and various types of agricultural vehicles. Hubei Cheng Li Special Purpose Vehicle Co., Ltd., Sales Manager Chen Xin, Contact Tel: Welcome to visit us! Cover And Flat Board Printing Machine Automatic Flat Bed Screen Printing Machine,Hot Foil Stamper,Screen Printing Machine,Flat Screen Printing,3D Glass Printing GIG (DONGGUAN) CO., LTD , https://www.tubeprinter.com