JPS5856790U

JPS5856790U - Lattice boom

Info

Publication number: JPS5856790U
Application number: JP15123181U
Authority: JP
Inventors: 森下　光政
Original assignee: 日立建機株式会社
Priority date: 1981-10-12
Filing date: 1981-10-12
Publication date: 1983-04-18

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図は従来のラチスブームを示す正面図、第２図は第
１図の側面図、第３図は第１図の■−■断面図、第４図
はこの考秦の一実施態様を示す正面図、第５図は第４図
の側面図、第６図は第４図および第５図のラチスブーム
構成体を弦材の突き合せピン継手におい下切り離した状
態を示す斜視図である。Fig. 1 is a front view showing a conventional lattice boom, Fig. 2 is a side view of Fig. 1, Fig. 3 is a sectional view taken along the line ■-■ of Fig. 1, and Fig. 4 shows an embodiment of this lattice boom. 5 is a side view of FIG. 4, and FIG. 6 is a perspective view showing the lattice boom structure of FIGS. 4 and 5 in a state where it is placed at a butt pin joint of a chord member and cut away.

Claims

[Scope of utility model registration request]

A lattice boom configuration in which four string members are arranged parallel to each other and located at the corners of a rectangle, and adjacent string members are connected to each other via diagonal members whose ends are welded to each other. In the body, the ends of the diagonal members on the side surfaces of adjacent lattice booms are welded so that they gather at almost the same point on the chord members common to both sides, and the ends of the diagonal members on the sides of the lattice boom are butted against the ends of the chord members near the welded points. A lattice boom characterized in that a pin joint structure is provided, and chord members of adjacent lattice boom structures are connected by each butt pin joint structure.