A hydraulic control system adapted to the control of getting on and off the aerial work vehicle

Abstract

The invention discloses a hydraulic control system applicable to control over an upper vehicle body and a lower vehicle body of an aerial platform vehicle. The hydraulic control system comprises a pump set, an upper vehicle body control multiway valve connected with upper vehicle body execution elements, and a lower vehicle body control multiway valve connected with lower vehicle body execution elements. The lower vehicle body control multiway valve comprises a two-position three-way valve and a support leg control valve bank. A bypass throttle valve bank is used for achieving flow-distribution speed regulation of the upper vehicle body control multiway valve. An electromagnetic pressure relief valve is used for system unloading. The hydraulic control system has the beneficial effects that 1, the whole system is divided into a lower vehicle body control system and an upper vehicle body control system through a two-position three-way reversing valve, an interlocking function between the lower vehicle body control system and the upper vehicle body control system is achieved, when the upper vehicle body works, the lower vehicle body cannot act, and when the lower vehicle body acts, the upper vehicle body cannot work; and 2, through a bypass throttling control mode, a rotating platform and a working platform are each provided with a bypass throttle valve so that workers can conveniently control the speed of the upper vehicle body control system during operation on the rotating platform and the working platform, and the control cost of the hydraulic control system is lowered.

Description

technical field [0001] The invention belongs to the technical field of high-altitude operation vehicles, and in particular relates to a hydraulic control system suitable for getting on and off the high-altitude operation vehicle, and is especially suitable for the hydraulic control system of the low-cost folding arm type high-altitude operation vehicle. Background technique [0002] Aerial work vehicle refers to a special vehicle for transporting staff and equipment to the scene and performing aerial work. In order to facilitate the use of the staff, control devices are usually installed on the working platform of the aerial work vehicle and when the vehicle is dismounted. At present, in order to realize the control of getting on and off the vehicle, two manual multi-way valves are used to realize the control of getting on and off the vehicle, which is low in cost but high in energy consumption. Some use electro-hydraulic proportional valves to realize the operation of gett...

AI Technical Summary

Problems solved by technology

There are also certain problems in this patent. Due to the electric proportional control, a proportional handle, an amplifying plate and a proportional valve are used, and the control cost is high.

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