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Die forging hat type cylinder bottom

A cylinder bottom and cap-type technology, applied in the field of the cylinder bottom of the super hydraulic cylinder, can solve the problems of easy cracking and oil leakage of the cylinder, and achieve the effects of avoiding oil leakage, low cost and improving work stability.

Inactive Publication Date: 2016-01-27
董艳华
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  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

[0002] At present, the cylinder bottom of mining hydraulic cylinders basically adopts a welded structure. The cylinder bottom body and the hinge shaft with connected oil passages are fixedly connected together by welding. The quality of the weld seam is affected by various factors. Guarantee 100% no welding defects such as air holes and sand holes, and the welds are prone to cracks under the condition of excessive force, which will cause oil leakage from the cylinder

Method used

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  • Die forging hat type cylinder bottom
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Embodiment Construction

[0012] Below in conjunction with accompanying drawing, the present invention is described in further detail:

[0013] Such as figure 1 As shown, the present invention mainly consists of a piston cylinder bottom body 2 and a hinge shaft 1, and the cylinder bottom body 2 and the hinge shaft 1 are respectively provided with a cylinder bottom oil passage 21 and a hinge shaft oil passage 11 communicating with each other. The cylinder bottom body 2 and the hinge shaft 1 are integrally formed into a die forging structure. The piston cylinder bottom of this integral structure fundamentally solves the phenomenon of oil leakage caused by welding defects, and saves the welding process, and the structure Simple processing is convenient, greatly improving production efficiency. The overall molding die forging structure improves the compactness of the internal crystal grains, and further reduces the risk of internal oil leakage under high pressure.

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Abstract

The invention discloses a hat type cylinder bottom and particularly relates to a hat type cylinder bottom provided with an oil way. The hat type cylinder bottom is used for an ultra-hydraulic oil cylinder. The hat type cylinder bottom is composed of a pin shaft 1, a cylinder bottom body 2 and a positioning sleeve 3. The hat type cylinder bottom is formed through one-time forging and pressing by a die, and the compactness of internal crystalline grains of the cylinder bottom can be improved. Compared with an existing product, the hat type cylinder bottom is convenient to use, simple in structure and low in cost; the working stability of hydraulic cylinders of the type is improved, and the problems of oil leakage and the like due to welding damage can be avoided.

Description

technical field [0001] The invention designs a hat-type cylinder bottom, especially a hat-type cylinder bottom with an oil passage, which is used for the cylinder bottom of a super hydraulic oil cylinder. Background technique [0002] At present, the cylinder bottom of mining hydraulic cylinders basically adopts a welded structure. The cylinder bottom body and the hinge shaft with connected oil passages are fixedly connected together by welding. The quality of the weld seam is affected by various factors. It is guaranteed that there are no welding defects such as air holes and sand holes, and the welds are prone to cracks under the condition of excessive force, which will cause oil leakage from the cylinder. Especially on mining dump trucks with super large tonnage, the working conditions are harsh, the cylinder diameter is large, the load is high, and the leakage ratio of the cylinder bottom weld seam is higher under high pressure. Contents of the invention [0003] The ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F15B15/20
Inventor 董艳华
Owner 董艳华
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