JPS5830685U

JPS5830685U - Crane boom anti-tilt device

Info

Publication number: JPS5830685U
Application number: JP12307481U
Authority: JP
Inventors: 石山　守
Original assignee: 日立建機株式会社
Priority date: 1981-08-21
Filing date: 1981-08-21
Publication date: 1983-02-28

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図は本考案に係る移動式クレーンの全体側面図、第
２図はクレーンブームの継手部を分解して示す斜視図、
第３図は従来のブームあおり止め装置の断面図、第４図
はクレーンブームを分解する手順を説明する移動式クレ
ーンの全体側面図、第５図は誤った手順で継手の連結を
解いたときの移動式クレーンの全体側面図、第６図は本
考案によるブームあおり止め装置の断面図である。１・・・クレーン本体、２・・・ブーム、２Ａ・・・下
ブーム、２Ｂ・・・継ぎブーム、２Ｃ・・・上ブーム、
９・・・継手、３０・・・ブームあおり止め装置、３０
Ａ・・・外筒、３０Ｂ・・・内筒、３２・・・第１のス
トッパ部材、３３・・・第２のストッパ部材。Fig. 1 is an overall side view of the mobile crane according to the present invention, Fig. 2 is an exploded perspective view showing the joint part of the crane boom,
Figure 3 is a sectional view of a conventional boom swaying prevention device, Figure 4 is an overall side view of a mobile crane explaining the procedure for disassembling the crane boom, and Figure 5 is a diagram showing a case in which the joint is uncoupled by the wrong procedure. FIG. 6 is an overall side view of the mobile crane of FIG. 1...Crane body, 2...Boom, 2A...Lower boom, 2B...Connection boom, 2C...Upper boom,
9...Joint, 30...Boom tilt stop device, 30
A: outer cylinder, 30B: inner cylinder, 32: first stopper member, 33: second stopper member.

Claims

[Scope of utility model registration request]

An outer cylinder and an inner cylinder that is slidably fitted into the outer cylinder, which is interposed between the crane main body and a boom configured by connecting a lower boom, a joint boom, and an upper boom through joints. In the crane boom swing stop device, which has one of the outer cylinder and the inner cylinder connected to the crane main body and the other to the lower boom of the boom, there is a gap between the outer cylinder and the inner cylinder. . A crane boom anti-tilt device, characterized in that a stopper means is provided for restricting further extension of the inner cylinder when the bunim is in a disassembled position.