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Crane and its hydraulic control system

A hydraulic control system, hydraulic system technology, applied in the direction of fluid pressure actuation system components, mechanical equipment, clockwork mechanism, etc., can solve the problem of low energy utilization rate of cranes, to solve the problem of low energy utilization rate and reduce energy consumption The effect of consumption

Active Publication Date: 2018-07-03
ZOOMLION HEAVY IND CO LTD
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Problems solved by technology

[0004] The main purpose of the present invention is to provide a crane and its hydraulic control system to solve the problem of low energy utilization in the cranes in the prior art

Method used

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  • Crane and its hydraulic control system
  • Crane and its hydraulic control system

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Embodiment Construction

[0024] It should be noted that the embodiments in the application and the features in the embodiments can be combined with each other if there is no conflict. Hereinafter, the present invention will be described in detail with reference to the drawings and in conjunction with the embodiments.

[0025] This embodiment provides a hydraulic control system for a crane, please refer to figure 2 The hydraulic control system includes a main valve 10 and a main winch hydraulic system 20 connected to the main valve 10. The main winch hydraulic system 20 includes a winch motor 21. The hydraulic control system also includes: an energy storage device, an energy storage device and The lowering side working oil port of the hoisting motor 21 is connected to store the pressure oil flowing out of the hoisting motor 21 during the lowering process of the hoisting.

[0026] The hydraulic control system of the crane in this embodiment includes an energy storage device. Since the energy storage device...

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Abstract

The invention provides a crane and its hydraulic control system. The hydraulic control system includes a main valve and a main hoist hydraulic system connected to the main valve. The main hoist hydraulic system includes a hoist motor. The hydraulic control system also includes: energy Storage device, the energy storage device is connected with the working oil port on the descending side of the winch motor to store the pressure oil flowing out from the winch motor during the lowering of the winch. The hydraulic control system in the present invention solves the problem of low energy utilization in the cranes in the prior art.

Description

Technical field [0001] The invention relates to the field of engineering machinery, and in particular to a crane and a hydraulic control system thereof. Background technique [0002] Currently, in the existing technology, such as figure 1 As shown, the operation of the telescopic hydraulic system 1, the luffing hydraulic system 2, the main / auxiliary winch hydraulic system 3, the swing control valve 4 and the pilot control valve 5 in the hydraulic control system of the crane must rely on the engine to drive hydraulic power valve. [0003] However, if the engine is used as the power source to provide power to the hydraulic system, the engine consumes a lot of energy, the hoisting potential energy cannot be effectively used, and the energy utilization rate of the crane is low. Summary of the invention [0004] The main purpose of the present invention is to provide a crane and its hydraulic control system to solve the problem of low energy utilization in cranes in the prior art. [000...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B66D1/44B66C13/20F15B1/02F15B21/14F15B13/02
Inventor 何伟宋建清李永星熊智勇黄珍
Owner ZOOMLION HEAVY IND CO LTD
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