JPS60137785U

JPS60137785U - mobile crane

Info

Publication number: JPS60137785U
Application number: JP2245584U
Authority: JP
Inventors: 行川　正人
Original assignee: 日立建機株式会社
Priority date: 1984-02-21
Filing date: 1984-02-21
Publication date: 1985-09-12

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図は移動式クレーンの全体の側面図、第２図は従来
の移動式クレーンのガイドシーブ部の一部正面図、第３
図は第２図における■−■線断面図、第４図は従来の移
動式クレーンのジブマストとジブブームを折り畳んだ状
態の側面図である。第５図乃至第８図は本考案に係る移動式クレーンの一実
施例を示し、第５図はクレーン作業時のガイドシーブ部
の一部正面図、第６図は輸送時のガイドシーブ部の一部
正面図、第７図は第６図における■矢視図、第８図はジ
ブマストとジブブームとを折り畳んだ状態の側面図であ
る。１・・・クレーン本体、２・・・ブーム、３・・・ジブ
ブーム、４・・・ジブマスト、１０・・・ジブフットピ
ン、１１・・・巻上ロープ、１２・・・ガイドシーブ、
１３・・・第１回転軸、１４．１５・・・横部材、２１
・・・第２回転軸、２２・・・ボルト、２３・・・ブラ
ケット、２４・・・円形ブラケット。／　　　　Ｊ６　　５第２図　　　１１１−１第６図　　ＷFigure 1 is a side view of the entire mobile crane, Figure 2 is a partial front view of the guide sheave section of a conventional mobile crane, and Figure 3 is a partial front view of the guide sheave section of a conventional mobile crane.
The figure is a sectional view taken along the line ■--■ in FIG. 2, and FIG. 4 is a side view of a conventional mobile crane in a state where the jib mast and jib boom are folded. 5 to 8 show an embodiment of the mobile crane according to the present invention, FIG. 5 is a partial front view of the guide sheave part during crane operation, and FIG. 6 is a partial front view of the guide sheave part during transportation. FIG. 7 is a partial front view, FIG. 7 is a view taken in the direction of the ■ arrow in FIG. 6, and FIG. 8 is a side view of the jib mast and jib boom in a folded state. DESCRIPTION OF SYMBOLS 1... Crane body, 2... Boom, 3... Jib boom, 4... Jib mast, 10... Jib foot pin, 11... Hoisting rope, 12... Guide sheave,
13...First rotating shaft, 14.15...Horizontal member, 21
...Second rotating shaft, 22...Bolt, 23...Bracket, 24...Circular bracket. / J 6 5 Figure 2 111-1 Figure 6 W

Claims

[Scope of utility model registration request]

The base end of the boom is attached to the crane body so that it can be raised and lowered, the base end of the jib boom is rotatably attached to the tip of the boom, one end of the jib mast is rotatably attached to the base end of the jib boom, and the base end of the jib boom is rotatably attached to the tip of the boom. A mobile crane in which a guide sheave is attached to the intermediate part and a jib hook hoisting rope from the crane body is looped around the guide sheave,
A mobile crane, characterized in that the guide sheave is rotatably attached to a bracket by a first rotating shaft, and the bracket is rotatably attached to the jib mast by a second rotating shaft intersecting the first rotating shaft.