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Hydraulic combination valve

A hydraulic combination valve and oil technology, applied in servo motor components, fluid pressure actuating devices, mechanical equipment, etc., can solve the problems of single hydraulic oil source, not considering the diversification of accessories, and limiting the application scope of construction machinery, etc. achieve compact structure

Pending Publication Date: 2019-11-22
LIUGONG CHANGZHOU MACHINERY
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

At present, construction machinery does not consider the diversification of attachments, and the output hydraulic oil source is single, which limits the application range of construction machinery

Method used

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  • Hydraulic combination valve
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Embodiment Construction

[0015] In order to make the purpose, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and preferred embodiments. The preferred embodiments are only to illustrate the present invention, rather than to limit the protection scope of the present invention.

[0016] Such as figure 1 As shown, a hydraulic combination valve includes an oil source switching system 1, an auxiliary control system 2 and two oil return ports 3, the oil source switching system 1 and the auxiliary control system 2 are connected in series, and the two return ports Oil port 3 communicates. The oil source switching system 1 includes a first oil source switching system 11 and a second oil source switching system 12, and the first oil source switching system 11 and the second oil source switching system 12 are connected in parallel. The first oil source switching system 11 includes a...

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Abstract

A hydraulic combination valve comprises an oil source switching system and an auxiliary combined control system which are connected with each other in series, and the oil source switching system comprises a first oil source switching system and a second oil source switching system which are connected with each other in parallel. The first oil source switching system comprises a first oil source switching valve which is a two-position two-way solenoid valve; and the second oil source switching system comprises a second oil source switching valve which is a two-position three-way solenoid valve.The hydraulic combination valve is compact in structure, and safe and reliable, and can meet hydraulic circuit arrangement with different flow requirements.

Description

technical field [0001] The invention relates to a valve, in particular to a hydraulic combination valve, which belongs to the technical field of engineering machinery. Background technique [0002] Construction machinery is no longer a machine for a single working condition. For example, in addition to excavating earthwork, an excavator is equipped with a breaker and hydraulic shears to become an artifact of building demolition. Another example is the loader that is usually used as a scraper machine. It has been widely used as a mobile oil source abroad to equip various attachments to achieve multi-functional operations. It is currently known that loaders can be equipped with up to 120 attachments. Due to the different working conditions of various attachments, the flow rate of mobile equipment (loaders, excavators) required is very different. At present, construction machinery does not consider the diversification of attachments, and the output hydraulic oil source is sing...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F15B13/02
CPCF15B13/02F15B2013/002
Inventor 牛宏杰丁亮钱珍宝汪琰
Owner LIUGONG CHANGZHOU MACHINERY
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