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Hydraulic drive system with energy recuperation

A drive system and hydraulic technology, which is applied to fluid pressure actuation system components, fluid pressure actuation devices, motor vehicles, etc., can solve the problems of complicated startup, inability to achieve energy storage and release efficiency, etc., and achieve high output power, Optimized energy consumption and increased flexibility

Active Publication Date: 2009-04-01
LIEBHERR WERK NENZING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In known hydraulic drive systems with such high-pressure accumulators, a satisfactory efficiency for the storage and release of energy cannot be achieved
In addition, startup is often complicated

Method used

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  • Hydraulic drive system with energy recuperation
  • Hydraulic drive system with energy recuperation
  • Hydraulic drive system with energy recuperation

Examples

Experimental program
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Effect test

Embodiment Construction

[0079] An embodiment of the hydraulic drive system of the invention for driving the winch 6 is now shown by FIG. 1 a. A diesel engine is provided as the drive unit 10 driving the first positive displacement hydraulic machine 1 . For this purpose, the drive unit 10 is connected to the first positive displacement hydraulic machine 1 via the clutch 7 and the transmission 8 . The first volumetric hydraulic machine 1 is connected to the second volumetric hydraulic machine 2 through hydraulic lines 11 and 13, thereby obtaining a closed main hydraulic circuit. The second positive displacement hydraulic machine 2 is connected to and drives the winch 6 .

[0080] There is also a third positive displacement hydraulic machine 3 also connected to the winch 6 . The third positive displacement hydraulic machine 3 is connected to the hydraulic accumulator 9 and the high pressure accumulator 5 by hydraulic lines. The hydraulic accumulator 5 is additionally connected to the first positive d...

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PUM

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Abstract

The present invention relates to a hydraulic drive system for driving an apparatus, with a drive unit, a first and a second hydraulic displacement machine, with which the drive unit is connectable or connected for transmitting mechanical energy, and a third and a fourth hydraulic displacement machine, which are connectable o r connected with the apparatus for transmitting mechanical energy, wherein the first hydraulic displacement machine is hydraulically connected or connectable wit h the third hydraulic displacement machine, and wherein a high-pressure accumulator is provided, which is hydraulically connected or connectable with the second and the fourth hydraulic displacement machine.

Description

technical field [0001] The present invention relates to a hydraulic drive system for driving equipment, the hydraulic drive system having a drive unit capable of driving said hydraulic machine via a main hydraulic circuit comprising a first positive displacement hydraulic machine and a second positive displacement hydraulic machine equipment; a third positive displacement hydraulic machine connectable or connectable to said device to transfer mechanical energy; and a high pressure accumulator hydraulically connected or connectable to the third positive displacement hydraulic machine hydraulic machine. In particular, the present invention relates to a hydraulic drive system for use in cranes, especially for driving winches. In addition, the invention relates to a hydraulic drive system for use in mobile equipment, in particular in reach cranes or wheel loaders, in particular as a travel drive. Background technique [0002] In order to provide the hydraulic energy used to dr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F15B1/02F15B1/027F15B11/16F15B21/00B66D1/06
CPCF15B1/024F15B2211/20569F15B7/006F15B21/14B66D1/44B66C13/20F15B2211/88F15B2211/625F15B2211/212F15B2211/20546F16H61/4096F15B7/008
Inventor 克劳斯·施奈德威廉·克劳特勒
Owner LIEBHERR WERK NENZING
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