Title:
TELESCOPIC BOOM AND CRANE WITH THE SAME
Document Type and Number:
Japanese Patent JP2016003142
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a novel telescopic crane boom assembly which does not need a reinforcement apparatus using a costly space mast or the like.SOLUTION: On a luffing plane are arranged a plurality of extensible parts 41, 41', 41'', each of which containing main extensible pipes 411, 411', 411'' and auxiliary extensible pipes 412, 412', 412'', the main extensible pipes and auxiliary extensible pipes extending parallel to one another. The main extensible pipes 411, 411', 411'' and the auxiliary extensible pipes 412, 412', 412'' are mutually connected via a rigid structure 413 at one end. The lateral pipe size of the auxiliary extensible pipes 412, 412', 412'' with respect to the luffing plane is configured to be larger than the lateral pipe size of the main extensible pipes 411, 411', 411'' with respect to the luffing plane.
Inventors:
JOACHIM HENKEL
Application Number:
JP2015116885A
Publication Date:
January 12, 2016
Filing Date:
June 09, 2015
Export Citation:
Assignee:
LIEBHERR WERK EHINGEN
International Classes:
B66C23/693; B66C23/42
Domestic Patent References:
| JP2013545690A | 2013-12-26 | |||
| JPH0834596A | 1996-02-06 | |||
| JP2009040602A | 2009-02-26 | |||
| JP2012197177A | 2012-10-18 | |||
| JPS4728652B1 | ||||
| JPS479779B1 |
Foreign References:
| WO2000050332A1 | 2000-08-31 | |||
| DE202010014103U1 | 2012-01-10 |
Attorney, Agent or Firm:
Maeda patent office