JPS58158075U

JPS58158075U - Derrick boom

Info

Publication number: JPS58158075U
Application number: JP5457382U
Authority: JP
Inventors: 宏司喜多
Original assignee: 株式会社来島どつく
Priority date: 1982-04-13
Filing date: 1982-04-13
Publication date: 1983-10-21

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図は従来のブーム先端部を略視した斜視図である。第２図は従来のブーム先端部の力学的構成を斜視図て略
視したものである。第３図は従来のブーム先端部の力学
的構成を平面図て略視したものである。第４図はこの考
案のブーム先端部を略視したものである。第５図はこの
考案のブーム先端部の力学的構成を斜視図で略示したも
のである。第６図はこの考案のブーム先端部の力学的構
成を平面図て略示したものである。主なる記号、１０・・・・・・ブーム、１１・・・・・
・アラトリツガ、１６，１７．１Ｂ、１９，２４．２５
・・・・・・シーブブロック、２３・・・・・・スイベ
ル。第２図第５図FIG. 1 is a schematic perspective view of the tip of a conventional boom. FIG. 2 is a schematic perspective view of the mechanical structure of a conventional boom tip. FIG. 3 is a schematic plan view of the mechanical structure of the tip of a conventional boom. FIG. 4 is a schematic view of the tip of the boom of this invention. FIG. 5 is a perspective view schematically showing the mechanical structure of the boom tip of this invention. FIG. 6 is a plan view schematically showing the mechanical structure of the boom tip of this invention. Main symbol, 10... Boom, 11...
・Aratoritsuga, 16, 17.1B, 19, 24.25
... Sheave block, 23 ... Swivel. Figure 2 Figure 5

Claims

[Scope of utility model registration request]

Arator triggers 11 are provided on both sides of the tip of the boom 10, and sheave blocks 16, 17, 18, and 19 are provided at the tip of the boom 10, the tips of each of the Arator triggers 11, and at four points several meters away from the tip of the boom 10. In addition, the sheave blocks 24 and 25 are installed on the lower surface of the boom 10 at the cross section of the Aratoritoriga 11 and the boom 10 at symmetrical positions with the boom 10 as the axis, and the sheave blocks 22 and 21 are connected downwardly by a swivel 23. A derrick boom characterized in that a suspension rope W whose both ends are tied to the carco line inch drum is wound around the sheave of the sheave block to form a square pyramid.