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Hydraulic system with bi-directional tilt scraper control

A hydraulic system and hydraulic valve technology, applied in the direction of fluid pressure actuation device, servo motor, servo motor assembly, etc., can solve problems such as reducing the functionality of related machines, the system cannot be tilted and pitched at the same time, and has limitations.

Active Publication Date: 2015-09-23
CATERPILLAR INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Although the system of the '506 patent can perform tilt and pitch operations independently, it is still limited
i.e., the system of the '506 patent cannot simultaneously pitch and pitch, or perform unidirectional pitch operations using only RCASV
These limitations can reduce the functionality of the associated machine

Method used

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  • Hydraulic system with bi-directional tilt scraper control
  • Hydraulic system with bi-directional tilt scraper control
  • Hydraulic system with bi-directional tilt scraper control

Examples

Experimental program
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Effect test

Embodiment Construction

[0011] figure 1 An exemplary machine 10 is illustrated having various systems and elements that cooperate to accomplish tasks. Machine 10 may embody a mobile machine performing some operation related to an industry such as mining, construction, farming, transportation, or another industry known in the art. For example, machine 10 may be a material moving machine such as a bulldozer, motor grader, snow plow, or the like. Machine 10 may include an implement system 12 configured to move a work tool 14, a drive system 16 for propelling the machine 10, a power source 18 for powering the implement system 12 and the drive system 16, and providing power to the implement system 12, the drive system 16 and / or an operator operator station 19 for the control of the power system 18 .

[0012] Implement system 12 may include a coupling structure upon which a fluid actuator acts to move work tool 14 . Specifically, the implementation system 12 may include left and right pushrods 20, 22 pi...

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PUM

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Abstract

A hydraulic system for a machine is disclosed. The hydraulic system may have a tank configured to hold a supply of fluid, a pump configured to draw fluid from the tank and pressurize the fluid, a first cylinder operatively connected between a first side of a work tool and an undercarriage of the machine, and a second cylinder operatively connected between a second side of the work tool and the undercarriage of the machine. The hydraulic system may also have a first electro-hydraulic valve associated with the first cylinder and configured to selectively regulate a flow of pressurized fluid to the first cylinder independently of the second cylinder, and a second electro-hydraulic valve associated with the second cylinder and configured to selectively regulate a flow of pressurized fluid to the second cylinder independently of the first cylinder.

Description

technical field [0001] The present invention relates generally to a hydraulic system, and more particularly to a hydraulic system with bi-directional tilting blade (blade, blade) control. Background technique [0002] Some earth-moving machines, such as bulldozers, motor graders, and snow plows, have front-mounted work implements, such as blades, buckets, or plows, for pushing or carrying material. The work tools may be tilted about a horizontal axis substantially perpendicular to the work tool by one or more tilt cylinders and pitched about a horizontal axis parallel to the work tool by twin cylinders located on either side of the work tool. Tilting can be accomplished by extending and retracting a single cylinder or extending one paired cylinder while retracting the other paired cylinder. Pitching can be done individually by simultaneously extending or retracting two paired cylinders in the same direction. Existing hydraulic systems use various combinations of manual and...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F15B13/043E02F9/22F15B13/02
CPCF15B11/163E02F9/2004E02F3/815E02F3/845F15B2211/6054E02F3/7609E02F9/2296F15B2211/3144F15B2211/329E02F3/844F15B2211/3111F15B2211/30535E02F9/2235F15B13/0416E02F9/2285F15B13/043
Inventor T·汉德H·阿米斯特德F·赛义德S·普拉纳姆S·加内特
Owner CATERPILLAR INC