Hydraulic full-time floating control system and control method of boom type aerial work platform

Abstract

The invention discloses a hydraulic full-time floating control system and control method of a boom type aerial work platform. The hydraulic full-time floating control system comprises a chassis, an integral swing bridge assembly, a split type floating bridge assembly and a complete machine hydraulic system; the split type floating bridge assembly comprises a left side floating end and a right side floating end; a floating oil cylinder is arranged between the split type floating bridge assembly and the chassis; the floating oil cylinder communicates with the complete machine hydraulic system through a control valve assembly; a system controller assembly comprises a system controller and a sensor assembly; and the system controller controls the control valve assembly according to data information measured by the sensor assembly. The hydraulic full-time floating control system and control method have the beneficial effects that the problem that in the actual using process of the boom type aerial work platform, energy consumption of a full-time floating system is large is solved; a stable constant-pressure oil source matched with pressure is obtained from the complete machine hydraulic system, and the stability and operation comfort of a complete machine are improved; the walking contact area of the complete machine is increased, and the cross-country walking capacity of the complete machine is improved; and the control precision and system reliability of a floating control valve are improved.

Description

technical field [0001] The invention relates to a control system of an aerial work platform, in particular to a hydraulic full-time floating control system and a control method of a boom-type aerial work platform, belonging to the technical field of engineering machinery. Background technique [0002] As a kind of aerial work machinery and equipment, aerial work platform has quickly become a very frequently used machine in aerial work. With the improvement of national technological innovation and modern laws and regulations, stricter and more standardized guidelines for working at heights have been put forward in the new era. Aerial work machinery has become a scene where important climbing equipment is applied to different working conditions. [0003] Boom-type aerial work platforms are roughly divided into one-piece chassis structure and split-type chassis structure due to different working conditions. The one-piece structure chassis axle and chassis are welded into one, ...

AI Technical Summary

Problems solved by technology

However, the general time-limited floating is mainly adjusted by the gravity of the whole machine, so the control pressure signal is small, and it cannot meet the floating pressure requirements of all heights and heavy machine weights to a large extent. It is necessary to reconsider the floating balance valve and matching pressure.

[0005] At the same time, the liquid supply of the hydraulic system also has problems such as power loss and energy consumption loss. Although the oil supply problem is solved by connecting the pinion oil pump alone, it increases the engine power loss and the hydraulic system power loss and heat generation, reducing the overall machine. Mechanical efficiency; Although the oil supply problem can be solved by introducing the oil circuit from the main system, there are still problems of system energy consumption and control accuracy of the hydraulic system

Images