Composite-material tube, manufacturing method, hydraulic cylinder barrel and piston rod

A composite material and manufacturing method technology, applied in the direction of fluid pressure actuating devices, etc., can solve problems such as enhancing connection strength, and achieve the effects of increasing connection strength, saving reinforcing fiber materials, and ensuring continuity

Inactive Publication Date: 2014-01-22
SANY AUTOMOBILE MFG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of this, the present invention proposes a composite material bobbin and a composite material bobbin manufacturing method, and a hydraulic cylinder and piston rod incl

Method used

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  • Composite-material tube, manufacturing method, hydraulic cylinder barrel and piston rod
  • Composite-material tube, manufacturing method, hydraulic cylinder barrel and piston rod
  • Composite-material tube, manufacturing method, hydraulic cylinder barrel and piston rod

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Embodiment Construction

[0028] It should be noted that the embodiments of the present invention 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.

[0029] Such as figure 2 As shown, a hydraulic cylinder tube includes two connecting rings 2, a tube tube 1, a wear-resistant lining 3,

[0030] The wear-resistant lining 3 is located between the two connecting rings 2, and the two connecting rings 2 and the wear-resistant lining 3 are nested in the tube 1. The connecting ring 2 is provided with internal threads or a keyway. The outer diameter of the connecting ring 2 is larger than the outer diameter of the wear-resistant inner lining 3. A transition cone 21 is provided at the connection between one end of the connecting ring 2 and the wear-resistant inner lining 3. A circular arc transition surface 20 is adopted at one end. The bob...

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PUM

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Abstract

The invention discloses a composite-material tube. Two connecting rings are nested in inner holes in the two end portions of a tube body. The tube body comprises axial strengthening fibers, and the two connecting rings are wound and wrapped with the axial strengthening fibers in a continuous and reciprocating mode with the two ends of the tube body as poles. The invention further discloses a hydraulic cylinder barrel, a piston rod and a manufacturing method of the composite-material tube. According to the composite-material tube, the hydraulic cylinder barrel, the piston rod and the manufacturing method of the composite-material tube, the strength of connection between the connecting rings and the tube body is improved, large axial stretching and compressing loads can be borne, meanwhile, materials of the strengthening fibers are saved, the cost for manufacturing the hydraulic cylinder barrel is reduced, and the production efficiency is improved.

Description

Technical field [0001] The invention relates to the field of composite material bobbins, in particular to a hydraulic cylinder tube and piston rod including composite material bobbins, and a method for manufacturing the composite material bobbins. Background technique [0002] At present, fiber-reinforced composite materials are used in the cylinder of hydraulic cylinders, such as carbon fiber composite materials. Reinforced fiber materials have excellent mechanical properties, but they cannot be welded. Therefore, the connection of carbon fiber materials with other components has always been a technical difficulty. The most commonly used connection method is to use glue, bolts or pins to connect. However, the strength of the glue is limited, and the main load cannot be transmitted to the reinforcing fiber. It is difficult to achieve the same strength as the carbon fiber cylinder. When bolts or pins are used for connection, the reinforced fiber material at the connection positio...

Claims

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Application Information

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IPC IPC(8): F15B15/08B29C70/34
Inventor 曾盛渠李韶茂李瑶
Owner SANY AUTOMOBILE MFG CO LTD
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