Novel semitrailer frame

Abstract

The invention discloses a novel semitrailer frame and belongs to the technical field of semitrailers. The semitrailer frame comprises a semitrailer frame body including a first frame and a second frame; wheels are arranged at the bottom of the second frame; a second hydraulic cylinder is arranged on the surface of the first frame; the tail end of the second hydraulic cylinder is mounted on the first frame in a hinged manner; and a connecting frame is arranged at the output end of the second hydraulic cylinder. With an auxiliary wheel mechanism, traffic accidents caused by sudden tire burstingin the running process of the semitrailer are avoided, the running safety of the semitrailer is guaranteed; meanwhile, convenience is provided for follow-up tire replacement; with a folding frame, inthe empty vehicle running process, the shortened vehicle frame transportation efficiency is high, the defects that the turning radius is too large and the like because an overlong vehicle frame runs are overcome and thus the running efficiency is reduced are overcome; the transportation time can be shortened through the folding frame, so that the transportation efficiency is improved.

Description

technical field [0001] The invention belongs to the technical field of semi-trailers, and in particular relates to a novel semi-trailer frame. Background technique [0002] A semi-trailer is a means of transportation that connects the semi-trailer to the tractor head through a traction pin. In order to obtain greater carrying capacity, tractors and semi-trailers are mostly two-axle or three-axle. The types of semi-trailers are divided into barn semi-trailers, low-bed semi-trailers and so on. [0003] Low-bed semi-trailers have no railings on their body parts, and are usually used to transport small and medium-sized vehicles, rail vehicles, construction machinery and other large and heavy-duty goods. The lower the center of gravity, the better the stability and safety. The ability to pass through the height limit section is stronger. The front end of a common low-bed semi-trailer is hinged to the tractor through the gooseneck, the rear end of the gooseneck is connected to ...

AI Technical Summary

Problems solved by technology

[0004] In actual use, because semi-trailers are often used to transport heavy objects and rub against the ground for a long time, the risk of tire bursting is very high. When the tire bursts, it is very easy to cause traffic accidents due to vehicle instability, endangering drivers and roadside pedestrians safety of life

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