Lockable hydraulic crab steering system for double-drum rollers

A technology of steering system and road roller, which is applied in the field of hydraulic crab steering of double-drum rollers and hydraulic steering of double-drum rollers. Partiality problem

Active Publication Date: 2013-12-18
XCMG CONSTR MACHINERY
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  • Abstract
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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

Method used

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  • Lockable hydraulic crab steering system for double-drum rollers
  • Lockable hydraulic crab steering system for double-drum rollers

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Embodiment Construction

[0013] The present invention will be further described below in conjunction with accompanying drawing:

[0014] Such as figure 1 , figure 2 As shown, a hydraulic crab steering system with a locking function for a double-drum roller includes a fuel tank 1, a filter 2, a hydraulic pump 3, a steering gear 5, a crab valve 6, a first crab cylinder 91, a second Crab row oil cylinder 92, first steering oil cylinder 101, second steering oil cylinder 102 and oil diffuser 4. The safety valve in the steering gear 5 limits the pressure of the system; the filter 2 filters the impurities in the system and prevents oil pollution; the oil diffuser 4 plays a cooling role for the whole system.

[0015] The hydraulic pump 3 is connected to the oil tank 1 through the filter 2, and supplies high-pressure oil to the whole system. Back to tank 1. Wherein, the steering circuit and the crab circuit are connected in parallel. The steering circuit includes a first steering cylinder 101 and a secon...

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Abstract

The invention belongs to the field of hydraulic steering techniques for double-drum rollers, and particularly relates to a lockable hydraulic crab steering system for double-drum rollers. The steering system comprises an oil tank, a hydraulic pump, a steering gear, a crabbing valve, a first crabbing cylinder, a second crabbing cylinder, a first steering cylinder and a second steering cylinder; after passing through the hydraulic pump, the steering gear and the crabbing valve, the oil in the oil tank is divided into a steering loop and a crabbing loop, and then flows back into the oil tank via the steering gear; the steering loop is connected in parallel with the crabbing loop; the crabbing valve comprises a two-position six-way electromagnetic reversing valve, a first balance valve and a second balance valve; the steering loop is connected with the two-position six-way electromagnetic reversing valve; and the crabbing loop is connected with the two-position six-way electromagnetic reversing valve respectively through the first balance valve and the second balance valve. The arrangement of the steering system is compact, steering operation and crab steering operation can be realized, moreover, the linear running of a double-drum roller can be guaranteed, and the efficiency of operation and the quality of rolling can be increased.

Description

technical field [0001] The invention belongs to the technical field of hydraulic steering of double-steel rollers, and in particular relates to the technical field of hydraulic crab steering of double-steel 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 double-drum roller have two modes of serial operation and parallel operation. 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 for steering and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F15B13/02E01C19/28
Inventor 张帅张俊娴位文凯肖洋贺信唐景文
Owner XCMG CONSTR MACHINERY
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