Semitrailer lifting supporting leg

Abstract

The invention belongs to the field of semitrailers, and particularly relates to a semitrailer lifting supporting leg. The problems that an existing lifting supporting leg is strenuous in height adjusting, the pressure of a supporting plate on the ground is too large and collision may occur if the lifting height of the supporting leg is too low are solved. According to the technical scheme, the supporting leg comprises a fixed seat, wherein a hydraulic telescopic rod is rotationally connected to the side wall of the lower end of the fixed seat through a rotary shaft, a cavity is formed in the fixed seat, the side wall of the cavity is connected with a swing rod through a transverse moving mechanism, the swing rod is rotationally connected with the fixed end of the hydraulic telescopic rod, the telescopic end of the hydraulic telescopic rod is fixedly connected with a mounting seat, the mounting seat is of a hollow structure, and a stepping motor is fixedly connected to the inner wall of the upper end of the mounting seat. According to the supporting leg, adjusting is easy and labor-saving through the motor and the hydraulic telescopic rod, the pressure borne by a main supporting plate is reduced through an auxiliary supporting plate, so that the hydraulic telescopic rod can be rotated to lift the main supporting plate so as to prevent the main supporting plate from collision, and therefore the use safety of the semitrailer is improved.

Description

technical field [0001] The invention relates to the technical field of semi-trailers, in particular to a lifting leg for a semi-trailer. Background technique [0002] A semi-trailer is a trailer whose axle is placed behind the vehicle's center of gravity and is equipped with hitches that transmit horizontal and vertical forces to the tractor. Semi-trailers are generally three-axle semi-trailers, and their types are divided into 11-meter warehouse semi-trailers, 13-meter warehouse semi-trailers, and low-bed semi-trailers. It is a heavy-duty transport vehicle connected to the semi-trailer head through the traction pin. The semi-trailer is mainly used to transport bulky goods that are not easy to disassemble, such as excavators, etc. The fence type is more suitable for pulling fresh goods, such as vegetables, fruits, etc. The van type is more suitable for pulling bulk cargo and moisture-proof more expensive goods. [0003] When loading and unloading the semi-trailer, Du Xuya...

AI Technical Summary

Problems solved by technology

[0005] The invention proposes a lifting leg for a semi-trailer, which solves the problem that the height adjustment of the leg of a semi-trailer is usually adjusted by the worker manually turning the rotating rod, which is very time-consuming and laborious, and only one support plate is supported by contact with the ground The supporting effect of the outrigger is poor, and it is easy to generate a large pressure on the ground and damage the ground. At the same time, the lifting height of the outrigger is limited, and the outrigger cannot be raised too high, which will cause the outrigger to collide during the semi-trailer. Certain security risks

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