JPS6418090U

JPS6418090U -

Info

Publication number: JPS6418090U
Application number: JP11196987U
Authority: JP
Priority date: 1987-07-23
Filing date: 1987-07-23
Publication date: 1989-01-30

Description

[Brief explanation of the drawing]

第１図は本考案の重量物吊り上げ状態を示す側
面図、第２図は同ヘツドシーブ部のＡ―Ａ断面図
、第３図及第４図は本考案の軽量物吊り上げ状態
を示す側面図、第５図は本考案の重量物吊り上げ
時のワイヤロープの掛け回し状態を示す斜視図、
第６図は従来のシヨートジブを設けたブームヘツ
ドの側面図である。１：ブーム、２：ヘツドシーブ、３：ヘツドシ
ヤフト、４：リンク、５：補助シーブ、８：フツ
クブロツク、１０：フツク、１１：可動ブロツク
、１３：ステー、１７：リンク固定ピン、１９：
補助フツクブロツク。 Fig. 1 is a side view showing the present invention in a state in which a heavy object is being lifted, Fig. 2 is a sectional view taken along line A-A of the head sheave portion, and Figs. 3 and 4 are side views showing the present invention in a state in which a light object is being lifted. FIG. 5 is a perspective view showing how the wire rope is routed when lifting a heavy object according to the present invention;
FIG. 6 is a side view of a boom head equipped with a conventional shot jib. 1: Boom, 2: Head sheave, 3: Headshaft, 4: Link, 5: Auxiliary sheave, 8: Hook block, 10: Hook, 11: Movable block, 13: Stay, 17: Link fixing pin, 19:
Auxiliary block.

Claims

[Scope of utility model registration request]

A wire rope is passed between a head sheave attached to the tip of a boom that is pivotally movable up and down at the front of the revolving upper structure and a hook sheave placed below the sheave, and winds and unwinds the wire rope. In a crane in which a hook is raised and lowered by means of A crane boom head structure characterized by being installed in an adjustable position.