1.Commercial Vehicle is a car used to transport people and goods in terms of design and technical characteristics. Commercial vehicles include all trucks and passenger cars with more than 9 seats, which are divided into buses, trucks, semi-trailer tractors, and non-integrated passenger cars. In the entire industry media, the concept of commercial vehicles is mainly defined from their own different uses, and it is customary to divide commercial vehicles into two categories: buses and trucks.

2.Classification of commercial vehicles: passenger cars are divided into three categories: large, medium and light; trucks are divided into dump trucks and tractors; tractors are divided into pickups, light trucks, heavy trucks, etc.

3.Commercial vehicle frames are mainly trapezoidal frames and girder frames.

4.Commercial vehicle frame design should mainly consider principles and frame damage types

A. Load bending B. Non-horizontal twisting C. Transverse bending D. Horizontal rhombus twisting

5.The frame materials currently on the market are basically: above E380TM, 16MN, DL510, and DL700. In fact, the yield strength of frame materials is above Q345 in principle, and the high ones can reach above Q600.

6.The type trapezoidal frame includes: front beam, tubular beam, longitudinal beam, reinforcement beam, yuanbao beam, channel beam, back-to-back beam, saddle-shaped connecting plate, aircraft beam, left and right brackets, rear tail beam and other typical structures. Connection methods are divided into: riveting, bolting, welding, riveting and other types

7.At present, most of the repairs on commercial vehicle bodies and girders in the market remain in the traditional method of straightening and pulling the roof with hand chain hoists and track steel; Heating repair will greatly damage the strength, hardness and material of the raw material, so that the strength of the girder becomes soft and the safety degree is reduced.

8.Doocar commercial vehicle body repair equipment is a special equipment to solve the collision and distortion of commercial vehicles:

A. Cold drawing process will not cause material annealing and other phenomena

B. Ensure that the strength of the frame is not damaged

C. High-pressure oil cylinders (10 tons, 25 tons, 50 tons, etc.) act on different parts, quickly straighten and repair, and work efficiently

D. The labor intensity of the workers is low, they can go to work with full of interest, and find the joy of work.

E. High level of safety, no safety hazards to employees, vehicles, or working environment

9.In order to improve the maintenance of the frame more efficiently, it can be matched with the electromagnetic induction heater, which can realize 500-600° heating in an instant to repair the part without damaging the strength of the frame. The system features: safety, high efficiency, energy saving, low maintenance cost, and environmental protection!