JPS61128283U

JPS61128283U -

Info

Publication number: JPS61128283U
Application number: JP1187985U
Authority: JP
Priority date: 1985-01-30
Filing date: 1985-01-30
Publication date: 1986-08-12
Also published as: JPH0245275Y2

Description

[Brief explanation of the drawing]

第１〜３図は本考案の一実施例としてのクレー
ンジブレスト装置を示すもので、第１図はその一
部を破断して示す側面図、第２図は第１図の矢
視図、第３図はその制御系のブロツク線図であり
、第４図は従来のクレーンジブ格納手段を示す側
面図である。１……ジブ先端部、２……フツク受け、３……
可動式フツク、３ａ……回転軸、４……バネ、５
……フツク駆動機構としての油圧シリンダ、５ａ
……油圧シリンダの伸縮端、６……ジブレスト台
、７……クツシヨンラバー、８……第１のセンサ
としてのリミツトスイツチ、９……第２のセンサ
としてのリミツトスイツチ、１０……ブラケツト
、１６……電磁式切換弁、１７……制御器、１８
……油溜、１９……油圧源、Ａ……制御系。 1 to 3 show a crane jib rest device as an embodiment of the present invention, in which FIG. 1 is a partially cutaway side view, FIG. 2 is a view taken in the direction of the arrow in FIG. 1, and FIG. FIG. 3 is a block diagram of the control system, and FIG. 4 is a side view showing a conventional crane jib storage means. 1...Jib tip, 2...Hook receiver, 3...
Movable hook, 3a... Rotating shaft, 4... Spring, 5
...Hydraulic cylinder as hook drive mechanism, 5a
...Extendable end of hydraulic cylinder, 6...Jibrest stand, 7...Cushion rubber, 8...Limit switch as first sensor, 9...Limit switch as second sensor, 10...Bracket, 16... ...Solenoid switching valve, 17...Controller, 18
...Oil sump, 19...Hydraulic source, A...Control system.

Claims

[Scope of utility model registration request]

A jib rest on which a crane jib can be placed, a movable hook capable of engaging with a hook receiver attached to the crane jib, a spring capable of urging the hook to an engagement position with the hook receiver; a hook drive mechanism capable of driving the hook from an engagement position with the hook receiver to a disengagement position against the above-mentioned force, and a first sensor capable of detecting the engagement position of the hook;
a second sensor capable of detecting the detached position of the hook, and a control system capable of controlling the hook drive mechanism in response to detection signals from the first and second sensors. A crane jibrest device characterized by: