JPS6213989U

JPS6213989U -

Info

Publication number: JPS6213989U
Application number: JP10483885U
Authority: JP
Priority date: 1985-07-11
Filing date: 1985-07-11
Publication date: 1987-01-28

Description

[Brief explanation of the drawing]

図面は本考案の実施例を示し、第１図は要部説
明図、第２図は全体図、第３図〜第６図は第１図
の―線、―線、―線、―線断面
図、第７図は連結棒の斜視図、第８図は連結棒の
他の実施例を示す斜視図、第９図、第１０図はそ
の連結部の断面図、第１１図は第２実施例の全体
図、第１２図は要部説明図である。２はベースブーム、４，５は第１・第２ブーム
、６はトツプブーム、７は伸縮ブーム、８は補助
ジブ、９は連結機構。 The drawings show an embodiment of the present invention; FIG. 1 is an explanatory view of the main parts, FIG. 2 is an overall view, and FIGS. 3 to 6 are cross-sections of FIG. 7 is a perspective view of the connecting rod, FIG. 8 is a perspective view showing another embodiment of the connecting rod, FIGS. 9 and 10 are sectional views of the connecting portion, and FIG. 11 is a second embodiment of the connecting rod. The overall view of the example and FIG. 12 are explanatory views of the main parts. 2 is a base boom, 4 and 5 are first and second booms, 6 is a top boom, 7 is a telescopic boom, 8 is an auxiliary jib, and 9 is a connection mechanism.

Claims

[Scope of utility model registration request]

A plurality of booms and a top boom 6 are telescopically inserted one after another into the base boom 2 to form a telescoping boom 7, and an auxiliary jib 8 is telescopically inserted into the top boom 6, and the auxiliary jib 8, the boom, and the top boom are telescopically inserted into the base boom 2. 6. A crane boom characterized in that at least one of the parts 6 and 6 can be tilted downward from the middle part.