JPH0172595U

JPH0172595U -

Info

Publication number: JPH0172595U
Application number: JP1987168683U
Authority: JP
Priority date: 1987-11-04
Filing date: 1987-11-04
Publication date: 1989-05-16

Description

[Brief explanation of the drawing]

第１図は本考案のフオークアタツチメントの一
実施例の側面図、第２図は第１図の―線にお
ける平面図、第３図は本考案の他の実施例の平面
図、第４図は移動式クレーンにフオークアタツチ
メントを装着した状態を示す側面図である。１は移動式クレーン、２は２段伸縮ブーム、４
は先端側ブーム、５はブーム傾動シリンダ、６は
ハンガ、７はシーブピン、８はブームポイントシ
ーブピン、９はフオーク支持ブラケツト、１０は
フオーク傾動シリンダ、１８はフオーク旋回中心
ピン、２０はフオーク、２１はビーム、２３はフ
オーク旋回シリンダを示す。 FIG. 1 is a side view of one embodiment of the fork attachment of the present invention, FIG. 2 is a plan view taken along the line - in FIG. 1, FIG. 3 is a plan view of another embodiment of the present invention, and FIG. The figure is a side view showing a state in which a fork attachment is attached to a mobile crane. 1 is a mobile crane, 2 is a two-stage telescopic boom, 4
is the tip side boom, 5 is the boom tilting cylinder, 6 is the hanger, 7 is the sheave pin, 8 is the boom point sheave pin, 9 is the fork support bracket, 10 is the fork tilting cylinder, 18 is the fork rotation center pin, 20 is the fork, 21 23 indicates a beam, and 23 indicates a fork rotating cylinder.

Claims

[Scope of utility model registration request]

A hanger that can be removably fixed to the tip of a boom of a mobile crane; a fork support bracket that is removably attached to the side surface of the hanger and pivoted at its longitudinally intermediate portion so as to be tiltable in the vertical direction; and the fork support bracket. a fork tilting cylinder whose both ends are pivotally connected to the rear end and the hanger; and the fork tilting cylinder and the boom lifting angle of the mobile crane are synchronized so that the tilting angle of the fork support bracket and the lifting angle of the boom are reversed. a boom tilting cylinder for making the absolute values equal; a fork pivoting center pin vertically attached to the tip of the fork support bracket; and a beam pivotably mounted horizontally by the fork pivoting center pin;
A fork attachment for a crane boom, comprising: a fork attached to the beam; and a power mechanism for rotating the beam around a fork rotation center pin.