Foldable storage type multi-model universal traction rod

Abstract

The invention discloses a foldable storage type multi-model universal traction rod which comprises a folding rod assembly and an opening and closing arm assembly. The folding rod assembly comprises a first folding rod, a second folding rod and a third folding rod which are hinged in sequence, one end of the first folding rod is fixedly provided with a rear wheel shaft and a swing arm support, and the rear wheel shaft is provided with a trundle; a traction ring and a hand traction rod are arranged at one end of the third folding rod; the opening and closing arm assembly comprises a limiting sliding sleeve and two swing arm mechanisms, the limiting sliding sleeve is arranged on the first folding rod in a limiting sliding sleeving mode, each swing arm mechanism comprises a front swing arm, a rear swing arm, a pulling and pressing rod and a side pulling arm, one end of each front swing arm is hinged to the corresponding swing arm support, and the other end of each front swing arm is hinged to the corresponding side pulling arm; one end of a rear swing arm is hinged to a rear mounting hole of the swing arm support, the other end of the rear swing arm is hinged to a rear mounting hole of the side pull arm, one end of a pull-press rod is hinged to the rear swing arm, and the other end of the pull-press rod is hinged to a limiting sliding sleeve of the side pull arm; and a traction clamping seat is arranged on each side pulling arm. The traction rod is convenient to use and high in universality.

Description

technical field [0001] The invention relates to the technical field of aviation ground support, in particular to a foldable and stowable multi-model universal tow bar. Background technique [0002] Helicopters currently equipped with three-point wheeled landing gear need to rely on ground traction equipment to realize their transfer operations when they are on the ground. The common and low-cost transfer method is to provide turning power and control the direction of traction by manual or tractor with traction tailstock; the traction bar is used as the connection and force transmission tool between the traction power source and the helicopter. One end of the towing rod is pushed and pulled by hand or connected to the tailstock of the tractor, and the other end is connected to the towing device on the helicopter body. The forms of the traction device on the above-mentioned helicopter body include the protruding wheel shaft type, the traction hole seat type, the wheel shaft p...

AI Technical Summary

Problems solved by technology

[0003] The functional performance of the currently equipped tow bar has the following defects: (1) One model corresponds to one type of tow bar, and when the same model is towed by a tractor or manually pulled by hand, each is equipped with a tow bar corresponding to the operation

The type and quantity of the tow bar increase with the type of helicopter, resulting in an increase in the use and maintenance management costs of the tow bar, especially when multi-model collaborative operations are required; (2) It cannot be folded and stored, and takes up a large storage space; (3) There is no secondary safety protection function after the safety pin of the towing device of the tractor fails, and there are potential safety hazards

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