What Are the Structural Features of the Fifth Wheel?

The fifth wheel is mainly composed of a seat cover, a saddle base, a locking mechanism, a seat plate, a separation-connection mechanism and a support.

• What are the structural features of the fifth wheel?

• What is the important role of fifth wheel?

• How can we use the fifth wheel?

What are the structural features of the fifth wheel?

There is a saddle base on each side under the seat cover made of steel plate. The fifth wheel is connected with the seat cover by a pin. The saddle base can rotate back and forth with the pin as the center relative to the seat cover. The bottom surface of the fifth wheel is used for The screw is connected with the pulled car, and a tightening mechanism composed of horseshoe, inclined iron, hook tongue, adjusting disc, cross bar, tie rod and spring is arranged under the seat cover. The horseshoe is fixed on the seat cover and is connected by a pin. The hook tongue, the tie rod, the cross rod and the inclined iron are also connected by a pin shaft, and the tie rod is connected to the rib plate under the seat cover by a spring, which is characterized in that the two tails behind the saddle-shaped seat cover are large arcs, and A butterfly-shaped concave surface that divides the entire plane into 5 pieces of similar size.

What is the important role of fifth wheel?

The fifth wheel can not only bear part of the vertical mass of the semi-trailer, but also play the role of towing the semi-trailer, and at the same time it is the steering mechanism of the semi-trailer. The shape of the two sides of the seat cover of the fifth wheel is a streamline shape with a wider middle and narrower sides. There are well-shaped reinforcing ribs welded under the seat cover, and there is also a set of lubrication lines under the seat cover. The fifth wheel is divided into splint type and hook-pin type according to its separation---different connection mechanism. Fixed traction seat The fixed fifth wheel is the most widely used one at present. Its support is fixed on the frame of the tractor, and the fifth wheel is allowed to have a certain degree of freedom on the support.

How can we use the fifth wheel?

After the fifth wheel is connected to the semi-trailer, first turn the safety baffle to one side, then pull the handle to move the locking block forward to the I-shaped notch that leaves the splint, the spring is compressed, and the front end of the splint is pulled by the fixed spring And close together, and against the locking block. Then drive the towing vehicle forward to complete the disengagement of the semi-trailer. The support device of the semi-trailer should also be lowered before the fifth wheel is disengaged.

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