Back to results
US 10,767,343 B2Granted
Work machine comprising a hydraulic arrangement for a selection valve
AssigneeCNH Industrial America LLC
InventorFrancesco Chioccola
Life of this patent
Estimating the term…
Abstract
A work machine including a machine base mounted movably over an undercarriage, and a hydraulic arrangement which includes a first cylinder configured for operating a working blade of the work machine, a second cylinder configured to vary the width of the undercarriage, a source of fluid at high pressure which is fluidly connected to the first and second cylinders and which is housed in the machine base, and a selection valve which is fluidly interposed between the source and at least one of the first and second cylinders. The valve is housed in the undercarriage.
Claims11
A work machine comprising:
- a machine base mounted movably over an undercarriage;
- and
- a hydraulic arrangement comprising:
- a first cylinder configured for operating a working blade of the work machine, the working blade connected to the undercarriage,
- a second cylinder configured to vary the width of the undercarriage,
- a source of fluid at high pressure which is fluidly connected to the first and second cylinders and which is housed in the machine base,
- a selection valve which is fluidly interposed between the source and at least one of the first and second cylinders, wherein the valve is housed in the undercarriage, and
- a feedback line connected between an inlet hose of the first cylinder and the selection valve, the hydraulic arrangement configured to switch a position of the selection valve automatically when a pressure in the inlet hose of the first cylinder is greater than a threshold such that the undercarriage is in a lifted configuration when the width of the undercarriage is changed by the second cylinder.
5 more elements
A work machine comprising:
- a machine base mounted movably over an undercarriage;
- and
- a hydraulic arrangement comprising:
- a first cylinder configured for operating a working blade of the work machine,
- a second cylinder configured to vary the width of the undercarriage,
- a source of fluid at high pressure which is fluidly connected to the first and second cylinders and which is housed in the machine base,
- a selection valve which is fluidly interposed between the source and at least one of the first and second cylinders, wherein the valve is housed in the undercarriage, and
- a feedback line connected to the selection valve for switching the position of the selection valve,
- wherein the feedback line is also connected to an inlet hose of the first cylinder and, wherein the selection valve is configured to switch position when a pressure at the inlet hose is greater than a preset threshold.
6 more elements
Dependencies are inferred from the claim text.