JPS59116396U

JPS59116396U - Lattice telescopic boom

Info

Publication number: JPS59116396U
Application number: JP843983U
Authority: JP
Inventors: 賢盛武
Original assignee: 日立建機株式会社
Priority date: 1983-01-26
Filing date: 1983-01-26
Publication date: 1984-08-06

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図は従来の荷役用クレーンの側面図、第２図は従来
のクレーンによる場合の作業状況図、第３図は本考案を
適用したクレーンの一例を示す斜視図、第４図は該クレ
ーンのマストと旋回体と昇降装置の組合わせ構造を示す
縦断面図、第５図ないし第９図は本考案の一実施例であ
り、第５図はブームの組合わせと伸縮用ロープの配設を
示す平面図、第６図は第５図のＡ矢視図、第７図はブー
ムのガイド装置を示す縦断面図、第８図は第５図のＢ−
Ｂ断面図、第９図はガイド装置の構成を示す斜視図、第
１０図は第３図のクレーンの作業状況図、第１１図は本
考案と異なるガイド装置の配設例を示すブーム隅部の正
面図、第１２図は第１１図の構造を採用した場合のブー
ムの背面図、第１３図は本考案の構造を採用した場合の
ブームの背面図である。６・・・マスト、１０・・・旋回体、１１・・・伸縮ブ
ーム、５１〜５４．５３’、５４’・・・ガイド装置、
５５゜５６．５５’、５６’・・・支持板、５７．６２
・・・軸受板、５８・・・主ビーム、５９．６３・・・
軸、６０゜６４・・・ブラケット、６１．６５・・・ガ
イド板。Fig. 1 is a side view of a conventional cargo handling crane, Fig. 2 is a work situation diagram when using a conventional crane, Fig. 3 is a perspective view showing an example of a crane to which the present invention is applied, and Fig. 4 is the crane. Figures 5 to 9 are longitudinal sectional views showing the combined structure of the mast, revolving body, and lifting device, and Figures 5 to 9 are examples of the present invention, and Figure 5 shows the combination of the boom and the arrangement of the telescopic rope. 6 is a view taken in the direction of arrow A in FIG. 5, FIG. 7 is a vertical cross-sectional view showing the boom guide device, and FIG.
B sectional view, FIG. 9 is a perspective view showing the configuration of the guide device, FIG. 10 is a working status diagram of the crane in FIG. 3, and FIG. 12 is a front view, FIG. 12 is a rear view of the boom when the structure of FIG. 11 is adopted, and FIG. 13 is a rear view of the boom when the structure of the present invention is adopted. 6... Mast, 10... Swivel body, 11... Telescopic boom, 51-54.53', 54'... Guide device,
55°56.55', 56'...Support plate, 57.62
...Bearing plate, 58...Main beam, 59.63...
Shaft, 60°64... Bracket, 61.65... Guide plate.

Claims

[Claims for Utility Model Registration] 1. Comprising a mast, a revolving body attached to the revolving body so as to be able to rotate around the mast, and a boom attached to the revolving body,
In the crane, the boom is formed by combining a plurality of booms of different sizes assembled into a rectangular tube shape and a lattice shape by beams so that they can be expanded and contracted in the horizontal direction by slidingly fitting each other, Attach the inner boom to the tip of each stage boom other than the innermost last stage boom and to the part where the rear end of the inner boom is located when the boom adjacent to the inside of each stage boom is at its maximum extension position. A guide device for slidably guiding is provided, and the guide device includes a set of two support plates fixedly attached to the main beam between the main beams at the corners of the boom, and a set of two support plates installed between the two support plates. a shaft supported by the bearing plate and the main beam; a bracket mounted rotatably about the shaft; and a bracket mounted on the bracket that slides in contact with the main beam of the inner boom. A lattice type telescopic boom characterized by consisting of a guide plate that allows the boom to move. 2. The lattice type telescopic boom according to claim 1, wherein each of the front and rear support plates constituting the guide device at the tip of the boom is made of a single plate material over the entire circumference.