JPS5974982U

JPS5974982U - Crane boom fixing device

Info

Publication number: JPS5974982U
Application number: JP16913882U
Authority: JP
Inventors: 英昭河田
Original assignee: 三井造船株式会社
Priority date: 1982-11-08
Filing date: 1982-11-08
Publication date: 1984-05-21

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of drawings]

第１図はクレーン側面図、第２図は従来のクレーンブー
ム固定装置の側面図、第３図は同平面図、第４図は本実
施例に係るクレーンブーム固定装置の正面図、第５図は
同側面図、第６図は同平面図である。２・・・クレーン本体、３・・・クレーンブーム、６・
・・支柱、９・・・支軸、１２・・・メインフック、１
３゜２１・・・シリンダ装置、１４・・・係合溝、１６
・・・クレーンブーム固定装置、１８・・・サブフック
、２０・・・係止投部。Fig. 1 is a side view of the crane, Fig. 2 is a side view of a conventional crane boom fixing device, Fig. 3 is a plan view thereof, Fig. 4 is a front view of the crane boom fixing device according to this embodiment, and Fig. 5 is the same side view, and FIG. 6 is the same plan view. 2... Crane body, 3... Crane boom, 6...
...Strut, 9...Spindle, 12...Main hook, 1
3゜21...Cylinder device, 14...Engagement groove, 16
... Crane boom fixing device, 18... Sub hook, 20... Locking throw part.

Claims

[Scope of utility model registration request]

In a crane boom fixing device that fixes a crane boom, which is pivotally attached to the crane body and can be rotated in a vertical plane, on the support side of the crane body in an inverted state, a crane boom fixing device is installed on the top of the crane boom so as to be orthogonal to the longitudinal direction of the boom. A main hook is provided that allows the support shaft to be loosely fitted to the support shaft, and is engaged with a half circumference on the side in the boom rotation direction, and a sub hook is engaged with the half circumference on the opposite side of the support shaft,
A crane boom fixing device characterized in that both hooks are pivotally attached to a support of a crane body and connected to a driving cylinder device.