Title:
ARC-SHAPED PIPE BENDER APPLIED TO MANUFACTURING OF LINE PIPE AT ROUND CABIN SECTION OF UNDERGROUND COMPREHENSIVE PIPE GALLERY
Document Type and Number:
WIPO Patent Application WO/2021/022846
Kind Code:
A1
Abstract:
Provided is an arc-shaped pipe bender applied to the manufacturing of a line pipe at a round cabin section of an underground comprehensive pipe gallery. The arc-shaped pipe bender comprises a base (1), a semicircular working face (2), a starting point insertion pipe (3), a bearing (4), a handle (5) and a pulley (6), wherein the semicircular working face is fixed to the base by taking the base as the diameter thereof, the starting point insertion pipe is fixed to one end of the semicircular working face, the bearing is fixed to the center of the base, one end of the handle is connected to the bearing, the pulley is fixed to the handle, and the distance from the bottom of the pulley to the bearing is equal to the sum of the radius of the semicircular working face and the diameter of the line pipe. When in use, the line pipe is located between the pulley and the semicircular working face, and the pulley slides on the semicircular working face so as to manufacture an arc-shaped line pipe meeting requirements. By using the arc-shaped pipe bender, only one person is required to manufacture the arc-shaped line pipe, thereby effectively improving the construction quality and the working efficiency of a line pipe at a round cabin section of a comprehensive pipe gallery.
Inventors:
YU JIANWEN (CN)
YI XIANPING (CN)
XU QIANZHANG (CN)
LI YANG (CN)
WANG WENSHOU (CN)
YI XIANPING (CN)
XU QIANZHANG (CN)
LI YANG (CN)
WANG WENSHOU (CN)
Application Number:
PCT/CN2020/087488
Publication Date:
February 11, 2021
Filing Date:
April 28, 2020
Export Citation:
Assignee:
THE SECOND CONSTRUCTION CO LTD OF CHINA CONSTRUCTION THIRD ENG BUREAU (CN)
International Classes:
B21D7/024; B29C53/08
Foreign References:
| CN110421035A | 2019-11-08 | |||
| CN207479267U | 2018-06-12 | |||
| CN108772449A | 2018-11-09 | |||
| CN108746276A | 2018-11-06 | |||
| CN206747330U | 2017-12-15 | |||
| CN208341431U | 2019-01-08 | |||
| KR20140148008A | 2014-12-31 | |||
| DE1527342A1 | 1969-09-11 |
Attorney, Agent or Firm:
WUHAN KAIYUAN INTELLECTUAL PROPERTY AGENT LTD. (CN)
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