A Hydraulic Crab Steering System with Locking Function for Double Drum Rollers

Abstract

The invention belongs to the technical field of hydraulic steering of a double-steel wheel road roller, and in particular relates to the hydraulic crab steering of a double-steel wheel road roller. The steering system includes a fuel tank, a hydraulic pump, a steering gear, a crab valve, a first crab cylinder, a second crab cylinder, a first steering cylinder, and a second steering cylinder; the oil in the fuel tank passes through the hydraulic pump, steering gear and The crab valve is divided into a steering circuit and a crab circuit, and then flows back to the fuel tank through the steering gear; the steering circuit and the crab circuit are connected in parallel; the crab valve includes a two-position six-way electromagnetic reversing valve, a first balance valve and The second balance valve; the steering circuit is connected with the two-position six-way electromagnetic reversing valve; the return of the crab is respectively connected with the two-position six-way electromagnetic reversing valve through the first balance valve and the second balance valve. The layout of the steering system is compact, which can realize the steering operation and crab steering operation, and can ensure the straight-line driving performance of the twin-drum roller, improving the operation efficiency and compaction quality.

Description

technical field [0001] The invention belongs to the technical field of hydraulic steering of double steel wheel road rollers, and in particular relates to the technical field of hydraulic crab steering of double steel wheel road rollers. Background technique [0002] At present, the welt compaction of twin-drum rollers is realized by hydraulic crab steering or mechanical crab steering. Hydraulic crab steering is easy to operate and responds quickly, so it is widely used on twin-drum rollers. The steering cylinder and the crab cylinder of the hydraulic crab steering system of the twin-drum roller have two modes of working in series and in parallel. When the two sets of oil cylinders for steering and crab travel work in series, the leakage in the cylinder will easily cause the phenomenon that the axes of the two drum rollers are not parallel when the double drum roller is crab running, resulting in the deviation of the double drum roller. When the two sets of oil cylinders fo...

AI Technical Summary

Problems solved by technology

[0003] Aiming at the deficiencies in the above-mentioned prior art, in order to solve the technical problem that the oil in the crab cylinder cannot be completely sealed, resulting in displacement, resulting in poor straight-line driving performance and deviation of the double-drum roller, the present invention provides a double-drum road roller. Hydraulic Crab Steering System with Locking Function for Drum Rollers

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