Type Of Tractor

According to whether the support can be moved, it is divided into fixed type, mobile type and lifting type. The left and right supports of the fixed traction seat are fastened to the base of the traction base by bolts, and the base of the traction base is then fixed to the frame of the tractor. Fixed type is the most widely used one. There are many styles of mobile traction seats, and the structure is almost the same as the fixed type. The main reason is that the connection method between the traction seat base and the tractor beam adopts a porous or tooth-shaped design. The base of the traction seat can be moved forward and backward according to the needs of connecting the trailer, so as to facilitate Smoothly connect with different trailers. Some mobile traction seats are also equipped with an automatic air pressure control device, which can use air pressure to push the traction seat forward and backward in the chute. The lifting tractor seat is mainly used on tractors in port terminals. The tractor seat can move up and down within a certain range to adapt to semi-trailers of different heights.
According to different degrees of freedom, there are single degrees of freedom and double degrees of freedom. Single degree of freedom traction seat is also called single-axis traction seat. It can only tilt about 80 degrees vertically. This type of traction seat has high driving stability and is suitable for high-speed, light-loaded and high-gravity semi-trailers driving on better roads. The disadvantage is that since it cannot swing laterally, the frame bears greater torque. The double-degree-of-freedom traction seat is also called the dual-axis traction seat. It can swing horizontally and vertically, and can protect the frame of heavy-duty transport tractors in different road environments. Usually, the double-axle traction seat is much higher than the single-axle type and has poor lateral stability when the vehicle is driving at high speed and turning. Therefore, this type of traction seat is rarely used in ordinary road transportation.