Small four-wheel trailer

Abstract

The invention discloses a small four-wheel trailer with steerable front wheels, rotatable draw bar up and down, and small wheelbase. Aiming at the defects that the prior small four-wheel trailer witha small wheelbase has inflexible steering, large vibration, unstable running, and easy overturn when meeting a road with a turn and a large slope in the running, the invention provides the small four-wheel trailer with small wheelbase and with flexible steering, small vibration and stable running when meeting a road with a turn and a large slope in the running process. The small four-wheel trailercomprises the draw bar, a frame, four wheels, a rear axle and a front axle, wherein the tail end of the draw bar is fixed on the middle part of the front axle; the bottom of the frame is provided with a steel spring plate; the rear axle is arranged on the steel spring plate on the bottom of the frame; the front axle is connected with the frame through a universal joint; the front axle adopts a torque shaft structural form; the left and right sides of the front axle are provided with a steering limit mechanism respectively; two ends of the front axle are provided with rockers; and the rockersare provided with axle heads for mounting front wheels.

Description

technical field [0001] The invention belongs to the technical field of vehicles, in particular to a small four-wheeled trailer with steerable front wheels and a small front and rear wheelbase with a drawbar that can rotate up and down. Background technique [0002] The front wheels of existing small four-wheeled trailers with small front and rear wheelbases are all designed to be non-steerable, and the drawbar cannot be swung up and down, which is inconvenient in use, especially when carrying explosive discharge devices and flammable and explosive When the small four-wheeled trailer encounters a turn and a road with a large slope during driving, it will cause the trailer to turn inflexibly, vibrate greatly, drive unstable and prone to rollover accidents. Contents of the invention [0003] The present invention aims at the above-mentioned small four-wheeled trailers with small front and rear wheelbases, which will cause the trailer to turn inflexibly, vibrate greatly, and r...

AI Technical Summary

Problems solved by technology

[0003] The present invention aims at the above-mentioned small four-wheeled trailers with small front and rear wheelbases, which will cause the trailer to turn inflexibly, vibrate greatly, and run unstable when it encounters a turn or a road with a large slope during driving. The disadvantage of being prone to rollover accidents is to provide a small four-wheeled trailer with a small front and rear wheelbase, flexible turning, small vibration, and stable driving when encountering turns and steep roads during driving.

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