Double-layer auxiliary frame structure of high-altitude operation car

Abstract

A double-layer auxiliary frame structure of a high-altitude operation car is mainly composed of a lower-layer car frame, an upper-layer car frame, car frame supporting columns and car frame locking devices. The lower-layer car frame is mounted above a chassis car frame. The upper-layer car frame is hinged to the upper portion of the lower-layer car frame. A high-altitude operation boom system is mounted above the upper-layer car frame. The four sides of the upper-layer car frame are provided with supporting legs. The car frame supporting columns and the car frame locking devices are arranged between the upper-layer car frame and the lower-layer car frame and located at the ends, close to a chassis cab and the chassis car tail, of the upper-layer car frame or the lower-layer car frame correspondingly. By means of the double-layer auxiliary frame structure, the action point of the chassis gravity on an auxiliary frame can be adjusted, and then stabilizing force is provided for high-altitude operation better. The operation stability is improved. Moreover, the problem that a cross beam of the tail of a cab needs to be extraordinarily reinforced to meet the use conditions due to overhanging of the cab in the prior art can be solved.

Description

technical field [0001] The invention relates to a sub-frame structure of an aerial work vehicle, which is mainly used for connecting aerial work equipment with an automobile chassis frame, in particular to a sub-frame with a double-layer structure, which belongs to the field of special engineering work vehicles. Background technique [0002] With the continuous improvement of people's safety awareness, it has become a trend to use aerial work vehicles to replace traditional climbing ladders and scaffolding. Aerial work vehicles have many advantages such as high safety and high work efficiency. The current mainstream height of aerial work vehicles is 16 meters, the length of the whole vehicle is about 8 meters, and the weight of the whole vehicle is about 6 tons, which leads to many problems such as poor mobility, poor fuel economy, high cost of use, and high skill requirements for drivers. The demand for lightweight and miniaturization of aerial work vehicles is becoming st...

AI Technical Summary

Problems solved by technology

However, after the weight of the whole vehicle is reduced, the proportion of the weight of the chassis is greatly increased, and the influence of the position of the center of gravity of the chassis on the stability of high-altitude operations cannot be ignored, which makes it difficult to arrange the whole vehicle and realize the lightweight of the whole vehicle

[0004] like image 3 As shown, the sub-frame 1 of the existing aerial work vehicle is a single-layer rigid structure, and the sub-frame 1 is rigidly connected with the chassis body 3-1. -6 The entire vehicle body is propped up, and the tires are completely off the ground. At this time, the connection between the chassis cab 3-2 and the sub-frame forms a cantilevered state. Since the design of the chassis often does not consider such working conditions, such as If the girder is not reinforced at the joint, it is very easy to cause the girder to break

Images