Hydraulic device for adjusting ascending and descending proportions of snow-removing roll brush

Abstract

The invention discloses a hydraulic device for adjusting the ascending and descending proportions of a snow-removing roll brush. The device comprises a metering pump, a combined electromagnetic overflow valve, a coarse oil filter, a fine oil filter with an oil stain display, three two-position three-way electro-hydraulic proportional valves, two balance valves, a two-position two-way floating valve, four oil cylinders, three oil pressure sensors, three oil cylinder position sensors and a set of PLC (Programmable Logical Controller) control system for electro-hydraulic control. According to the device, a roll brush elevating mechanism can be controlled to adjust the ascending and descending distances proportionally, effective contact between the roll brush and the ground as well as between support wheels and the ground is adjusted automatically according to the pressure of a roll brush motor, the snow-removing quality is improved, and adaptation to removing snow on road surfaces of different flatness is achieved.

Description

technical field [0001] The invention belongs to the technical field of road snow removal, and relates to a hydraulic device for adjusting the lifting ratio of snow removal roller brushes. Background technique [0002] The snow removal roller brush is an effective mechanical snow removal device. It is often used together with other snow removal equipment such as snow shovels. The effective contact between the roller brush and the ground is an effective guarantee for high-quality snow removal. Most of the existing snow removal roller brushes are temporarily installed on the front of trucks, loaders, graders and other equipment during snow removal in winter. Most of the roller brush lifting cylinders are controlled by on-off valves, which are manually operated by the operator, and the control accuracy of the lifting distance is low. , it is difficult to ensure the effective contact between the roller brush and the ground. For large-sized roller brushes, such as those with a le...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the above problems and provide a hydraulic device for adjusting the lifting ratio of the snow removal roller brush, which solves the problem that the existing roller brush and the ground distance adjustment control accuracy is low, which leads to the roller brush not being able to effectively clean the snow on the ground. Provide a lifting adjustment solution with controllable working pressure of roller brush for long-range roller brush snow removal work such as airports

Images