Height-adjustable air bag type gooseneck

Abstract

The invention discloses a height-adjustable air bag type gooseneck and belongs to the technical field of semitrailers. The height-adjustable air bag type gooseneck comprises an L-shaped base and a butt-joint platform. The L-shaped base is composed of a supporting section and an extending section. An overturning shaft and an overturning seat are arranged on the extending section. The upper end of the butt-joint platform is hinged to the front end of the overturning seat. The overturning seat is further provided with a leveling mechanism used for adjusting the levelness of the butt-joint platform. The leveling mechanism comprises a first connecting rod, a lever and a second connecting rod, wherein the lever is rotatably mounted on the overturning seat and rotates with the middle of the lever as a rotating point; the front end of the lever is hinged to the upper end of the second connecting rod, and the lower end of the second connecting rod is hinged to the rear edge of the butt-joint platform; and the rear end of the lever is hinged to the lower end of the first connecting rod, and the upper end of the first connecting rod is hinged to the extending section. A bracket is fixed to the L-shaped base and provided with an air bag, and the rear end of the overturning seat presses the air bag. When the air bag is in a full state, the rear end of the overturning seat is jacked by the air bag, and meanwhile the front end of the overturning seat drives the butt-joint platform to be butted with a traction saddle.

Description

technical field [0001] The invention relates to the technical field of semi-trailers, in particular to an airbag-type gooseneck whose height can be adjusted. Background technique [0002] The gooseneck in a semi-trailer is an extremely important component for attaching the cargo platform to the traction saddle. However, the gooseneck that is equipped on the current semi-trailer is relatively heavy. When docking, the gooseneck is mounted on the traction saddle so that the traction pin can be fitted into the traction saddle. There are technical defects in the traditional docking method. When docking, the traction pin is easy to produce a matching error with the traction saddle, which causes mechanical wear between the traction pin and the traction saddle. The height of the gooseneck cannot be flexibly adjusted during docking. And because the butt joint is lap joint, the gooseneck needs to bear a relatively large load, which greatly increases the probability of deformation and...

AI Technical Summary

Problems solved by technology

However, the gooseneck equipped on the semi-trailer nowadays is relatively bulky. When docking, the gooseneck is mounted on the traction saddle so that the traction pin can be fitted into the traction saddle

There are technical defects in the traditional docking method. When docking, the traction pin is easy to produce a matching error with the traction saddle, which causes mechanical wear between the traction pin and the traction saddle. The height of the gooseneck cannot be flexibly adjusted during docking. And because the docking method is lap joint, the gooseneck needs to bear a large load, which greatly increases the probability of deformation and damage

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