Travel valve, sequential action type combination hydraulic cylinder and hydraulic equipment

A sequential action, hydraulic cylinder technology, applied in the field of hydraulic valves and hydraulic cylinders, can solve the problems of not being able to bear multiple loads at the same time, hydraulic cylinders unable to achieve sequential control, and unable to meet complex mechanisms.

Active Publication Date: 2012-06-27
HUNAN TELI HYDRAULIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] It can be seen that the hydraulic cylinders in the composite hydraulic cylinders of the prior art cannot realize sequential control, and can only advance and shrink simultaneously, or act according to the load situation, which hydraulic cylinder will act first if the

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  • Travel valve, sequential action type combination hydraulic cylinder and hydraulic equipment
  • Travel valve, sequential action type combination hydraulic cylinder and hydraulic equipment
  • Travel valve, sequential action type combination hydraulic cylinder and hydraulic equipment

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Embodiment Construction

[0062] The specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to illustrate and explain the present invention, and the protection scope of the present invention is not limited to the following specific embodiments. .

[0063] First of all, it needs to be explained that in the following description, the "head" of the piston rod refers to the part of the piston rod of the hydraulic cylinder that is exposed outside the cylinder in the retracted state under normal circumstances, while the "cylinder head" It refers to the part relatively close to the head of the piston rod when the piston rod is retracted, the "tail of cylinder body" refers to the part of the cylinder body opposite to the "head of cylinder body", and the outer end of the piston refers to the opposite The part close to the "cylinder head", the inner end of the...

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PUM

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Abstract

The invention discloses a travel valve, which comprises a valve body (4), a valve spool (2), a spring (1) and an ejector rod (3), wherein a forward oil port (H) and a reverse oil port (J) are formed on the valve body (4), the valve spool and the spring are arranged in a valve cavity of the valve body to form a one-way valve, the ejector rod can slide in the valve body so as to eject the valve spool and enable the forward oil port and the reverse oil port to be communicated to each other. The invention discloses a sequential action type combination hydraulic cylinder, which comprises two travel valves. The ejector rods of the two travel valves can be driven mechanically so that the sequential action type combination hydraulic cylinder can act sequentially. Besides, the invention further discloses hydraulic equipment, which comprises the sequential action type combination hydraulic cylinder. The sequential action type combination hydraulic cylinder is controlled by the two travel valves, so that each hydraulic cylinder unit of the combination hydraulic cylinder can act sequentially accurately and the requirements of complicated mechanisms can be met. The sequential action type combination hydraulic cylinder is reasonable in structure, reliable in working and convenient in mounting and demounting and has excellent work reliability.

Description

technical field [0001] The present invention relates to a hydraulic valve, in particular to a stroke valve which can be used in a hydraulic cylinder to realize sequence control. On this basis, the present invention relates to a hydraulic cylinder, in particular, to a sequential action composite hydraulic cylinder including the stroke valve. In addition, the present invention also relates to a hydraulic device using the sequential action composite hydraulic cylinder. Background technique [0002] Composite hydraulic cylinder is a special type of hydraulic cylinder in hydraulic cylinders. Engineers and technicians in the field often call it "bundled hydraulic cylinder" or "two-stage double-acting hydraulic cylinder". It mainly combines two or more The cylinder blocks of the hydraulic cylinder are fixed together (for example, by welding, bolting, etc.) to meet the requirements of working conditions with multiple loads and large strokes. The composite hydraulic cylinder is mai...

Claims

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Application Information

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IPC IPC(8): F15B13/04F15B15/16
Inventor 谢志勇
Owner HUNAN TELI HYDRAULIC
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