Arm falling prevention control method based on mixing arm

Abstract

The invention discloses an arm falling prevention control method based on a mixing arm. The method comprises the following steps: (1) the contact conditions between the mixing arm and an arm bracket are judged in the lifting operation; (2) an arm lifting signal is sent to a first-grade arm; and the first-grade arm can send a gathering signal to a second-grade arm after receiving the arm lifting signal; (3) in the gathering process of the second-grade arm, relative space states of the first-grade arm and the second-grade arm are synchronously detected; (4) if deviated, the step (5) is performed; if not deviated, the step (7) is performed; (5) the second-grade arm is recovered; (6) when the second-grade arm reaches a locked space state, the step (7) is performed; (7) the second-grade arm reaches a locking state; and (8) after the mixing arm reaches a set safety area, the locking state of the second-grade arm is relieved; and according to a control command, the first-grade arm and the second-grade arm perform normal lifting operation. The method can prevent damage of vehicles and auxiliary devices or even personal casualty accidents caused by falling of the second-grade arm.

Description

technical field [0001] The invention relates to the technical field of elevating work vehicles, in particular to an arm drop prevention control method based on a hybrid arm. Background technique [0002] Lifting work vehicle is a common high-altitude operation equipment, which usually includes a car chassis, a working platform, and a boom system. Among them, the common boom system has two forms: folding and telescopic. Elevating vehicles that meet the requirements of working in a narrow space and complex environment, such as elevating jet fire trucks, climbing platform fire trucks, and aerial work vehicles, need to use a hybrid arm-type elevating vehicle that combines folding and telescopic combinations to meet the requirements. [0003] The hybrid arm system includes a primary arm (telescopic arm) 1, a secondary arm (folding arm or telescopic arm) 2, a linkage mechanism 3, an oil cylinder 4, and an arm support 5, such as figure 1 shown. When the boom is stretched, the sec...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problems existing in the above-mentioned prior art, the present invention provides an anti-arm drop control method based on the hybrid arm, which can solve the problem of sudden drop of the secondary arm during the lifting process of the hybrid arm in the prior art, and can avoid The stage arm falls, resulting in damage to the vehicle and accessories, and even casualties

Images