JPS5918787U

JPS5918787U - Foldable boom of mobile crane

Info

Publication number: JPS5918787U
Application number: JP11254982U
Authority: JP
Inventors: 石田　定文; 中山　繁和
Original assignee: 株式会社多田野鉄工所
Priority date: 1982-07-23
Filing date: 1982-07-23
Publication date: 1984-02-04
Also published as: JPS6323427Y2

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

第１図および第２図は、本考案の移動式クレーンの折畳
み式ブームの説明図であって、第１図は折畳み式ブーム
を折畳んだ状態における側面図、第２図は折畳み式ブー
ムを展開した状態の説明図である。第３図は第１図の状
態にある折畳み式ブームを逆の側面から見た説明図、第
４図は第３図の平面図、第５図は第３図のＸ部の拡大図
、第６図は第５図Ｙ−Ｙ方向矢視図である。車輌＋Ｂ％旋回台ｔＣｔ折畳み式ブーム；Ｄ１基ブーム
セクション；１、折畳みブームセクション；２、支軸；
Ｅ１油圧シリンダ；７、折返し滑車；４０、ワイヤーロ
ープ導出滑車；５１、ワイヤーロープ；４８、フックブ
ロック：Ｆ０Figures 1 and 2 are explanatory diagrams of the folding boom of the mobile crane of the present invention, with Figure 1 being a side view of the folding boom in a folded state, and Figure 2 being a side view of the folding boom. FIG. 3 is an explanatory diagram of the unfolded state. Figure 3 is an explanatory diagram of the folding boom in the state shown in Figure 1, viewed from the opposite side, Figure 4 is a plan view of Figure 3, Figure 5 is an enlarged view of the X section in Figure 3, and 6 is a view taken along the Y-Y direction in FIG. 5. Vehicle + B% Swivel base tCt Folding boom; D1 boom section; 1, Folding boom section; 2, Support shaft;
E1 hydraulic cylinder; 7, folding pulley; 40, wire rope lead-out pulley; 51, wire rope; 48, hook block: F0

Claims

[Scope of utility model registration request]

A base boom section whose base end is connected to a swivel base mounted on a vehicle so as to be freely adjustable in elevation, and a folded position where the base boom section is inverted and folded from below along the base boom section. A mobile crane comprising a folding boom section, the base end of which is pivotally connected to the distal end of the base boom section via a support shaft so that it can rotate between a deployed position and a folding boom section. A folding boom, wherein a folding pulley is provided on or near the spindle that pivotally connects the wooden boom section and the folding boom section, and the folding pulley is larger than the folding pulley when the folding boom section is in the folding position. A wire rope lead-out pulley is provided on the base end of the folding boom section that is biased toward the base end of the folding boom section and downward, and the wire rope from the winch provided on the swivel base is connected to the lower side of the base boom section, the folding pulley, The wire rope is led out to the back of the proximal end of the folding boom section in the erected position via the wire rope lead-out pulley, and the hook block is hoisted up and lowered by the wire rope so that it can be hung freely. Features a foldable boom for mobile cranes.