Crank arm locking detection device and aerial work engineering machinery with same

Abstract

The invention discloses a crank arm locking detection device, which comprises a support mechanism and a trigger mechanism, wherein the support mechanism comprises a bottom plate and lug plates which are symmetrically fixed on the bottom plate; the trigger mechanism comprises a lever which is installed between the lug plates of the support mechanism, wherein one end of the lever is a detection end, a limit round tube is arranged above the detection end, a crank arm agraffe is fixed on a crank arm, and a sensor which is used for detecting the displacement of the detection end of the lever is respectively fixed on each lug plate; and the other end of the lever is a reset end, and a reset spring is arranged on the reset end. The device utilizes the sensors to sense the crank arm retraction movement which is transferred from the lever mechanism, so the hydraulic cylinder of the crank arm is controlled to stop moving, the crank arm is accurately retracted to the specific position, meanwhile, the crank arm agraffe can limit the crank arm to swing along the travelling direction of a vehicle, so the reset problem of the crank arm can be completely solved, and the product safety is improved. The invention further discloses aerial work engineering machinery which is provided with the crank arm locking detection device.

Description

technical field [0001] The invention relates to the technical field of engineering machinery, in particular to a crank arm lock detection device for elevating work vehicles. The present invention also relates to a high-altitude construction machine comprising the crank arm locking detection device. Background technique [0002] Aerial work construction machinery is a product that serves mobile high-altitude operations such as aerial work, equipment installation, and maintenance in various industries. It has a special chassis, is equipped with a lifting arm, and is operated by professional operators to achieve high-altitude rescue or high-altitude operations. [0003] According to different lifting operation methods, aerial work vehicles can be divided into four series: folding arm, telescopic arm, hybrid arm, and self-propelled. Among them, the telescopic arm aerial work vehicle mainly uses the working bucket installed on the head of the telescopic boom Workers at heights ...

AI Technical Summary

Problems solved by technology

The curved arms of these two types of high-altitude construction machinery are hinged to the working platform. They do not stretch or retract during work, but do stretching or recovery actions. Due to the lack of corresponding crank arm detection devices, the crank arm cannot be accurately detected when the crank arm is retracting. Whether it has been reset normally can only be controlled by experience or by visual inspection, which has a large potential safety hazard

[0005] In addition, after the crank arms of the existing crank arm rear-mounted elevating fire trucks and aerial work vehicles are reset, due to the lack of corresponding crank arm locking devices, the crank arm and the working platform cannot be positioned accurately and will swing in the direction of vehicle travel. It will cause problems such as loosening and damage of related parts, which will affect the safety performance of the whole vehicle

Images