A tractor is a general large truck or semi-trailer that is towed by a tool between the front and the car. That is, the front of the car can be pulled out of the original car and pulled out of other cars. The car can also be pulled away from the original head by other fronts. . The front of the car with the driving ability is called the tractor, and the car without the traction drive capability is called the trailer. The trailer is towed by the tractor. There are two ways to connect the tractor to the trailer: the first is that the front half of the trailer is placed on the traction saddle above the rear section of the tractor, and the bridge behind the tractor is subjected to a part of the weight of the trailer, which is half-hook; The front end of the trailer is connected to the rear end of the tractor. The tractor only provides the forward pulling force and drags the trailer to go, but does not bear the downward weight of the trailer. This is the full suspension. It is often used for the transportation of large quantities of goods in the workshop or between workshops, such as the transportation of automobile manufacturing warehouses to assembly lines and baggage transportation at airports.
HOWO 6X2 Truck tractor
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As the main equipment for road transportation, tractors are widely used due to their advantages of specialization, large load and fast transportation. The traction seat is the connection between the tractor head and the semi-trailer. Although it is not a very complicated and eye-catching component, it is the most important safety equipment for a semi-trailer tractor. If the operation is incorrect or the maintenance is improper, it may be Lead to serious safety incidents.
According to whether its support can move, it is divided into fixed type, mobile type and lift type. The left and right seats of the fixed traction seat are fastened to the base of the traction seat by bolts, and the base of the traction seat is fixed to the beam of the tractor. Fixed type is currently the most widely used one. The movable type of traction seat has many styles, and the structure is similar to the fixed type. The main connection between the traction base and the tractor beam is porous or toothed. The base of the traction seat can be moved back and forth according to the needs of connecting the trailer. Connected smoothly with different trailers. Some mobile tractors are also equipped with an automatic air pressure control device that pushes the traction seat back and forth in the chute by air pressure. The lift type traction seat is mainly used on the tractor of the port terminal, and the traction seat can be moved up and down in a certain range to adapt to the semi-trailer of different heights.
According to the degree of freedom, there are single degrees of freedom and two degrees of freedom. The single degree of freedom traction seat is also called a single shaft type traction seat. It can only be used for a vertical tilt of about 80. This type of traction seat has high driving stability and is suitable for high speed, light load and high center of gravity semi-trailers running on better roads. The disadvantage is that the frame is subjected to a large torque because it cannot swing laterally. The double-degree of freedom traction seat is also called the double-shaft traction seat. It can be used for horizontal and vertical swings to protect the frame of heavy-duty transport tractors in different road environments. Usually, the two-axle type of traction seat has a large height and a single-axis type, and the lateral stability is poor during the high-speed turning of the vehicle, so this type of traction seat is less used in ordinary road transportation.
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