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Crane support leg, support leg hydraulic system and crane

A hydraulic system and crane technology, which is applied in the direction of cranes, bottom support structures, lifting equipment braking devices, etc., and can solve problems such as low strength and weak lifting capacity

Active Publication Date: 2014-07-16
XUZHOU HEAVY MASCH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The strength of part a of this structure is low, resulting in weak lifting capacity of the whole vehicle in a half-stretched state

Method used

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  • Crane support leg, support leg hydraulic system and crane
  • Crane support leg, support leg hydraulic system and crane
  • Crane support leg, support leg hydraulic system and crane

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Experimental program
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Embodiment Construction

[0044] The core of the present invention is to provide a crane outrigger. The outriggers of the crane have high strength in the half-extended state, which can significantly improve the lifting performance of the whole vehicle.

[0045] Another core of the present invention is to provide an outrigger hydraulic system for controlling the outriggers of the crane, and a crane provided with the outriggers of the crane.

[0046] In order to enable those skilled in the art to better understand the solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0047] In this article, terms such as "up, down, left, right" indicating orientation are based on the positional relationship of the drawings, and should not be interpreted as an absolute limitation on the scope of protection. Similarly, terms such as "first, second" It is only for the convenience of description to dist...

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PUM

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Abstract

The invention discloses a support leg hydraulic system for controlling a crane support leg. The support leg hydraulic system comprises a first one way sequence valve and a second one way sequence valve. An oil inlet and an oil outlet of the first one way sequence valve are respectively communicated with big cavities of a first horizontal oil cylinder and a second horizontal oil cylinder. The oil inlet and the oil outlet of the second one way sequence valve are respectively communicated with small cavities of the first horizontal oil cylinder and the first horizontal oil cylinder. Under the control of the support leg hydraulic system, the crane support leg has high strength during a semi flexible state, and obviously improves the lifting performance of the whole crane. The invention further discloses the crane provided with the crane support leg.

Description

technical field [0001] The invention relates to the technical field of engineering machinery, in particular to crane outriggers. The invention also relates to an outrigger hydraulic system for controlling said crane outrigger and a crane provided with said crane outrigger or outrigger hydraulic system. Background technique [0002] A crane is a construction machine that can lift vertically within a certain range or lift vertically and move heavy objects horizontally. [0003] In order to ensure sufficient safety and stability during work, that is, to ensure the safety factor of the whole machine against overturning, the crane is generally equipped with telescopic outriggers, so as to provide the crane with a larger The supporting span can increase its lifting capacity without reducing the maneuverability of the crane. [0004] The telescopic outriggers are mainly composed of fixed outriggers and movable outriggers. The fixed outriggers and movable outriggers are parts weld...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B66C5/00B66C23/80
Inventor 史飞曹培雷刘东宏张永亮
Owner XUZHOU HEAVY MASCH CO LTD