US 2016/0238041 A1 · Hydraulic Pressure Circuit and Working Machine

Abstract

Provided is a hydraulic circuit capable of saving a pump flow rate while hydraulic fluid is being accumulated in an accumulator. The hydraulic circuit has: a couple of boom cylinders that simultaneously operate the same operation by the hydraulic oil supplied under pressure from main pumps; an accumulator in which pressure of the hydraulic oil is accumulated; a pressure accumulating circuit that accumulates the pressure of the hydraulic oil extruded from one boom cylinder in the accumulator; and a regenerating circuit that regenerates the hydraulic oil extruded from the other boom cylinder to the boom cylinders.

Claims4

Dependent claims

A hydraulic pressure circuit comprising:

a plurality of fluid pressure cylinders performing the same operation at the same time by a hydraulic fluid pressurized and. supplied from a pump;
an accumulator in which the hydraulic fluid is accumulated;
an accumulating circuit for accumulating, in the accumulator, the hydraulic fluid pushed out of one fluid pressure cylinder among the plurality of fluid pressure cylinders;
and
a recovering circuit that recovers the hydraulic fluid pushed out of another fluid pressure cylinder that is different from the one fluid pressure cylinder, among the plurality of fluid pressure cylinders, to the other fluid pressure cylinder.

2 more elements

Dependencies are inferred from the claim text.

Facts

Application

15/031,616Filed 4 Nov 2014

Priority

JP 2013-2305336 Nov 2013

Published

18 Aug 2016

Term ends

Not estimatedThe source records don’t support an estimate.

Classification26 codes

F15B 11/024
Systems essentially incorporating special features for controlling the speed or the actuating force of an output member: by means of differential…
E02F 3/425
Drives for dippers, buckets, dipper-arms or bucket-arms: drive systems for dipper-arms, backhoes or the like
E02F 9/123
Turntables, i.e. structure rotatable about 360°: drives or control devices specially adapted therefor
E02F 9/2217
Hydraulic or pneumatic drives: with energy recovery arrangements, e.g. using accumulators, flywheels

Hydraulic Pressure Circuit and Working Machine

Life of this patent

Hydraulic Pressure Circuit and Working Machine

Life of this patent

Abstract

Claims4