Title:
JIB, CRANE, JIB UNFOLDING METHOD, AND JIB RETRACTION METHOD
Document Type and Number:
WIPO Patent Application WO/2022/179512
Kind Code:
A1
Abstract:
A jib, a crane, a jib unfolding method, and a jib retraction method. The jib comprises a jib body (1) and a jackscrew mechanism (2); the jib body (1) comprises a connecting frame (11) provided with a first connecting hole (111) and a second connecting hole (112), the first and second connecting holes (111 and 112) being coaxially arranged. The jackscrew mechanism (2) comprises a first shaft (21), a second shaft (22), and a driving mechanism (23); the first shaft (21) and the second shaft (22) are both arranged between the first connecting hole (111) and the second connecting hole (112), and the first shaft (21) and the second shaft (22) are both coaxial with the first connecting hole (111); the driving mechanism (23) is connected to the first shaft (21) and the second shaft (22) in a driving manner, so as to drive the first shat (21) and the second shaft (22) to extend and retract simultaneously. When the first shaft (21) is in an extended state, the first shaft (21) is inserted into the first connecting hole (111), and when the first shaft (21) is in a retracted state, the first shaft (21) is separated from the first connecting hole (111); when the second shaft (22) is in an extended state, the second shaft (22) is inserted into the second connecting hole (112), and when the second shaft (22) is in a retracted state, the second shaft (22) is separated from the second connecting hole (112). According to the jib, the connecting frame of the jib body works in conjunction with the first shaft and the second shaft of the jackscrew mechanism, and the first shaft and the second shaft extend and retract simultaneously, so that the mounting and removal of the jib are implemented, and the operation is convenient; moreover, the mounting and removal of the first shaft and the second shaft can be implemented by only one operation, and thus the mounting efficiency is at least doubled.
Inventors:
MA SHANHUA (CN)
ZHANG YANWEI (CN)
ZHU WEI (CN)
LI WEI (CN)
ZHANG YANWEI (CN)
ZHU WEI (CN)
LI WEI (CN)
Application Number:
PCT/CN2022/077371
Publication Date:
September 01, 2022
Filing Date:
February 23, 2022
Export Citation:
Assignee:
XUZHOU HEAVY MACHINERY CO LTD (CN)
International Classes:
B66C23/68; B66C13/50; B66C23/62
Foreign References:
| CN113120782A | 2021-07-16 | |||
| CN105217492A | 2016-01-06 | |||
| CN102137809A | 2011-07-27 | |||
| CN215516434U | 2022-01-14 | |||
| CN103010973A | 2013-04-03 | |||
| CN103058075A | 2013-04-24 | |||
| CN104176657A | 2014-12-03 | |||
| CN204802892U | 2015-11-25 | |||
| CN211569926U | 2020-09-25 | |||
| JP2001019352A | 2001-01-23 |
Attorney, Agent or Firm:
CCPIT PATENT AND TRADEMARK LAW OFFICE (CN)
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