JPS62144294U

JPS62144294U -

Info

Publication number: JPS62144294U
Application number: JP3145786U
Authority: JP
Priority date: 1986-03-04
Filing date: 1986-03-04
Publication date: 1987-09-11
Also published as: JPH0427915Y2

Description

[Brief explanation of the drawing]

第１図は、本考案に係るジブを有するホイール
クレーン全体の説明図、第２、第３図は、ジブ基
端部の説明図、第４図は、ジブの使用状態を示す
説明図、第５図は、ジブの下折格納時を示す説明
図、第６図は、ジブを下折状態にした説明図、第
７図は、第６図のＡ―Ａ断面図、第８図は、第７
図のＢ―Ｂ断面図、第９図は、ジブを基端ブーム
下面に支持された説明図、第１０図は、第９図の
Ｃ―Ｃ断面図、第１１図は、ジブを基端ブームの
一側面に沿つて横抱状態にした説明図、第１２図
は、第１１図のＤ―Ｄ断面図。４：基端ブーム、３：伸縮ブーム、１１，１２
：水平軸、１０：ジブ、３４，３５：吊具、５４
：第１滑車、４２：第１伸縮装置、５５′：第１
支持具、６０：第２滑車、５０：第２伸縮装置、
６３′：第２支持具、３１：軸支部。 Fig. 1 is an explanatory diagram of the entire wheel crane having a jib according to the present invention, Figs. 2 and 3 are explanatory diagrams of the base end of the jib, and Fig. 4 is an explanatory diagram showing how the jib is used. Fig. 5 is an explanatory diagram showing the jib folded downward, Fig. 6 is an explanatory diagram showing the jib folded downward, Fig. 7 is a sectional view taken along line AA in Fig. 6, Fig. 8 is 7th
Fig. 9 is an explanatory diagram showing the jib supported on the lower surface of the boom at the proximal end, Fig. 10 is a sectional view taken along CC in Fig. 9, and Fig. 11 is an explanatory diagram showing the jib supported at the proximal end of the boom. FIG. 12 is an explanatory diagram showing the boom in a horizontally held state along one side, and FIG. 12 is a sectional view taken along line DD in FIG. 11. 4: Proximal boom, 3: Telescopic boom, 11, 12
:Horizontal axis, 10: Jib, 34, 35: Hanging tool, 54
: 1st pulley, 42: 1st telescoping device, 55': 1st
support, 60: second pulley, 50: second expansion and contraction device,
63': second support, 31: pivot support.

Claims

[Scope of utility model registration request]

A telescopic boom is constructed by sequentially inserting the distal end boom into the proximal boom, and horizontal shafts are protruded from both sides of the lower end of the telescopic boom, and the proximal end of the jib can be attached to and removed from these protruding parts. The jib is pivoted to the telescopic boom so that the jib is folded along the lower surface of the proximal boom, and when the jib is folded along the lower surface of the proximal boom, the tip of the jib protrudes from one side of the proximal boom. In a jib configured to be folded down, hangers are provided on both sides of the base end of the jib, and when the jib is folded down, the position is above one of the hangers and above the side surface of the proximal boom. A first pulley is provided at the first pulley, the distal end of which is detachably attached to the one hanging tool, and the other end is connected via the first pulley to a first telescopic device that is supported by the proximal boom and is driven to extend and retract. A second pulley is provided above the support tool and the other hanging tool at a suitable position on the side surface of the proximal boom, the tip of which is detachable from the other lifting tool, and the other end is attached to the second pulley. A second support device is provided which is connected to a second telescopic device that is supported by the proximal end boom and is driven to extend and retract, and the jib can be twisted between the distal end portion of the jib in a downwardly folded state and the proximal end boom opposite thereto. A pivot support is provided to support the jib, and when the jib is folded down, one end of the first support tool is connected to the one hanging tool, and one end of the second support tool is connected to the other hanging tool, and the base end of the jib is connected to the other end of the second support tool. The jib can be moved between a downwardly folded state and a horizontally folded state along one side of the proximal boom by releasing the pivot with the tip of the telescopic boom and driving the first and second telescoping devices. A horizontal storage device for the jib.