TWO-BRANCH OR MULTI-BRANCH DOUBLE-LAYER WEAR-AND-IMPACT-RESISTANT TUBE AND MANUFACTURING METHOD THEREOF

Title:

TWO-BRANCH OR MULTI-BRANCH DOUBLE-LAYER WEAR-AND-IMPACT-RESISTANT TUBE AND MANUFACTURING METHOD THEREOF

Document Type and Number:

WIPO Patent Application WO/2016/141879

Kind Code:

A1

Abstract:

A two-branch or multi-branch double-layer wear-and-impact-resistant tube and manufacturing method thereof. The wear-and-impact-resistant tube comprises an outer protective tube (1) and an inner wear-resistant assembled tube (2) nested in the outer protective tube (1). The inner wear-resistant assembled tube (2) comprises two or more tube walls, and the two or more tube walls are joined to form a tube having an annular cross section. The wear-and-impact-resistant tube can be a straight tube or a bent tube. If the wear-and-impact-resistant tube is a straight tube, upper and lower portions of the inner wear-resistant assembled tube employ different structures, and if the wear-and-impact-resistant tube is a bent tube, a large curved portion and a small curved portion of the bent tube employ different structures. The inner assembled tube of the wear-and-impact-resistant tube is divided into at least two portions, and the at least two portions thereof employ different structures. The tube structure extends a service life thereof, improves wear resistance and impact resistance thereof, and reduces a total weight of the tube.

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Inventors:

ZHOU ZHAOHUI (CN)

Application Number:

PCT/CN2016/076021

Publication Date:

September 15, 2016

Filing Date:

March 10, 2016

Export Citation:

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Assignee:

ZHOU ZHAOHUI (CN)

International Classes:

F16L57/06; F16L9/00

Foreign References:

CN105526449A	2016-04-27
CN204717204U	2015-10-21
CN104747849A	2015-07-01
CN104653934A	2015-05-27
CN204717206U	2015-10-21
CN204647672U	2015-09-16
CN204677960U	2015-09-30
CN204677958U	2015-09-30
CN102563222A	2012-07-11
US6520213B1	2003-02-18
CN202629358U	2012-12-26

Other References: