Folding rescue trailer unit deployed via air springs

Abstract

The invention relates to a foldable rescue trailer device unfolding through air springs. The trailer device comprises a storage frame and a trailer unit. The trailer unit comprises a main beam, a foldable beam, a crossbeam, wheel brackets and trailer wheels. A foldable beam air spring is disposed between the main beam and the foldable beam. The wheel brackets are mounted on the crossbeam. The trailer wheels are mounted on the wheel brackets. A crossbeam air spring which drives the crossbeam to unfold and is provided with a control switch is mounted on the foldable beam. The telescopic end of the crossbeam air spring is connected with the crossbeam through a foldable connecting rod. The control switch of the crossbeam air spring controls unfolding timing through a cam fixed on a main beam hinge part. The foldable rescue trailer device unfolding through the air springs has the advantages that the trailer can be folded and stored in a common vehicle of conventional size, large modification of the vehicle is not needed, the trailer can be folded and unfolded through a winch and a traction rope, and use convenience is achieved; the unfolding timing of the crossbeam can be controlled by the crossbeam air spring with the control switch, untimely unfolding of the crossbeam can be prevented, and the width requirement of the rescue vehicle is lowered.

Description

technical field [0001] The invention relates to a folding rescue trailer device deployed by an air spring. Background technique [0002] Rescue trailers are used to tow vehicles that cannot drive normally due to failures or accidents. Special-purpose wreckers are large in size and complex in structure. They are dedicated to special vehicles and can only perform towing tasks. They have poor adaptability, high purchase and use costs, and cannot adapt to scale. The towing needs of smaller auto repair shops. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a foldable rescue trailer unfolded by an air spring, an ordinary vehicle can be transformed into a rescue vehicle with a trailer function after simple modification, and the beam can only be unfolded during the unfolding process of the folding beam . [0004] The technical solution adopted by the present invention to solve the technical problem is: a folding rescue...

AI Technical Summary

Problems solved by technology

[0002] Rescue trailers are used to tow vehicles that cannot drive normally due to failures or accidents. Special-purpose wreckers are large in size and complex in structure. They are dedicated to special vehicles and can only perform towing tasks. They have poor adaptability, high purchase and use costs, and cannot adapt to scale. Smaller Auto Repair Shop Towing Needs

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