What steps should be paid attention to after the tractor is connected to the semi-trailer

How much do you know about tractors? In fact, tractors can be divided into full-trailer tractors and semi-trailer tractors, ride-on tractors and stand-on tractors. Today we are going to talk about two categories: full-trailer tractors and semi-trailer tractors, but no matter which tractor The main force-bearing parts of the tractor of this type are the traction seat. The traction seat can not only bear part of the vertical mass of the semi-trailer, but also play the role of pulling the semi-trailer, and at the same time it is the steering mechanism of the semi-trailer. So, how is the traction seat classified?

The traction seat is mainly composed of the seat plate, the separation-connection mechanism and the support. The traction seat is divided into fixed type, lifting type and mobile type according to whether its support can move; according to the different degrees of freedom allowed, there are single degree of freedom, two degrees of freedom and three degrees of freedom, according to their separation---connection The mechanism is different, and it is divided into splint type and hook pin type.

Fixed towing seat The fixed towing seat is a very widely used type at present. Its support is fixed on the frame of the towing vehicle, and the towing seat is allowed to have a certain degree of freedom on the support.

Single degree of freedom traction seat is also called I-axis traction seat. It can only tilt longitudinally about an octave around the y-axis. This type of traction seat has high driving stability and is suitable for high-speed, light-load and high-center-of-mass semi-trailers driving on better roads. The frame is subjected to high torque.

After the tractor is connected to the semi-trailer, first turn the safety baffle to one side, and then pull the handle to move the locking block forward until it leaves. The L-shaped notch of the splint, the spring is compressed, and the front end of the splint is pulled together by the fixed spring, and is pressed against the locking block. Then drive the towing vehicle forward to complete the disengagement of the semi-trailer. The supporting device of the semi-trailer should also be lowered before disengaging.

Why is it a tractor? Traction is actually a tool that connects the front of the car and the car box. Normally, it is a large truck or a semi-trailer, that is, the front of the car can be separated from the original car box and tow other cars, and the car box can also be separated from the original car. Pulled by the front of the car. The front of the car with driving ability is called a tractor, and the car with no traction and driving ability in the back is called a trailer, and the trailer is towed by the tractor.

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