JPS63157090U

JPS63157090U -

Info

Publication number: JPS63157090U
Application number: JP4769987U
Authority: JP
Priority date: 1987-04-01
Filing date: 1987-04-01
Publication date: 1988-10-14
Also published as: JPH0352793Y2

Description

[Brief explanation of the drawing]

第１図及び第２図は夫々ジブの横抱き格納直前
におけるその中間２箇所の取付装置の縦断面図、
第３図はジブ格納状態の概略を示す平面図、第４
図はその要部の側面図、第５図及び第６図は夫々
第４図のＸ―Ｘ断面図及びその平面図、第７図は
第４図のＹ―Ｙ断面図、第８図は第７図のＺ―Ｚ
断面図である。１３……ブーム外筒、１４……ブーム中筒、１
５……ブーム内筒、１６……ピン、１８……ねじ
りコイルばね、１９……案内管、Ｍ１，Ｍ２……
取付装置。 Figures 1 and 2 are longitudinal cross-sectional views of the mounting device at two intermediate locations immediately before the jib is stored horizontally;
Figure 3 is a plan view showing an outline of the jib storage state;
The figure is a side view of the main parts, Figures 5 and 6 are a XX sectional view and a plan view thereof, respectively, of Figure 4, Figure 7 is a Y-Y sectional view of Figure 4, and Figure 8 is a sectional view of the main part. Z-Z in Figure 7
FIG. 13...Boom outer cylinder, 14...Boom middle cylinder, 1
5... Boom inner cylinder, 16... Pin, 18... Torsion coil spring, 19... Guide tube, M1, M2...
Mounting device.

Claims

[Scope of utility model registration request]

The base end of the jib is removably pivoted to the tip of the telescopic boom so that the jib can be rotated laterally between the extended position and the horizontally held position by the boom outer cylinder, and the jib is attached at two intermediate points in the horizontally held position. is a side-hold storage device for a jib that is removably attached to the side wall of a boom outer cylinder, and the bottom sides of L-shaped levers 2 and 3 that should come into contact with the bottom and side walls of two intermediate locations of the jib 1 in the side-hold position, respectively. Brackets 4, whose bases are fixed to the side walls of the boom outer cylinder in a corresponding manner projecting from the bases thereof, respectively.
means 6 and 7 are pivotally mounted to the levers 5 so as to be vertically movable, and means for constantly urging each L-shaped lever to rotate in the downward direction of the bottom thereof; A means for restricting the jib to an inclined position at which it can be climbed on at the end of the swinging motion is provided for each of the brackets, and the means protrudes from the side wall of the jib corresponding to the vertical side of each L-shaped lever and the bracket. Pin holes are formed in the binding pieces 8 and 9, respectively, so that the three pieces can be connected by restraint pins 10 and 11, respectively, so that the three pieces can be connected with restraint pins 10 and 11, respectively, and at least one of the brackets is A side-hugging storage device for a jib, characterized in that a stopper 12 is attached to the side wall of the jib in the side-hugging position.