JPS5856787U

JPS5856787U - Support structure for telescoping cylinder in telescoping boom

Info

Publication number: JPS5856787U
Application number: JP15229281U
Authority: JP
Inventors: 高石　鎮男; 久次米　昌雄; 謹司川上
Original assignee: 株式会社多田野鉄工所
Priority date: 1981-10-12
Filing date: 1981-10-12
Publication date: 1983-04-18
Also published as: JPS619916Y2

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図は従来のブーム伸縮用シリンダの支持構造を有す
る伸縮式ブームの一部断面側面図、第２図は第１図の要
部拡大図、第３図は本考案実施例に係るブーム伸縮用シ
リンダの支持構造を有する伸縮式ブームの一部断面側面
図、ｉ４図は第３図の伸縮式ブームの縮小時の一部断面
側面図、第５　、　１図は第３図の伸縮式ブームの要部
拡大斜視図、第　　　　′６図は第４図のＶｌ−ＶＩ縦
断面図である。２・・・・・・第１段ブーム、３・・・・・・第２段ブ
ーム、４・・・・・・第３段ブーム、５・・・・・・第
４段ブーム、６・・・−・・・ブーム伸縮用シリンダ、
６ａ・・・・・・ブーム伸縮用シリンダの尾端部、１０
・・・・・・シリンダチューブ、・１０ｂ・・・・・・
シリンダチューブ先端部、１１・・・・・・ロッド、１
２・・・・・・シリンダ支持部材、１３−・・・・・ト
ラニオン軸、２１．２２・・・・・・連動伸縮部材、２
５・・・・・・ガ箔ド部材、２５ａ、２５ｂ・・・・・
・ガイド部材の端部、２５Ｃ・・・・・・ガイド面、２
６・・・・・・ガイド支持部材。Fig. 1 is a partial cross-sectional side view of a telescoping boom having a support structure for a conventional boom telescoping cylinder, Fig. 2 is an enlarged view of the main part of Fig. 1, and Fig. 3 is a boom telescoping boom according to an embodiment of the present invention. Figure i4 is a partial cross-sectional side view of the telescopic boom shown in Figure 3 when it is retracted, and Figures 5 and 1 are the telescopic boom shown in Figure 3. Fig. '6 is a vertical sectional view taken along line Vl-VI in Fig. 4. 2... 1st stage boom, 3... 2nd stage boom, 4... 3rd stage boom, 5... 4th stage boom, 6...・・・－・・・Boom extension/retraction cylinder,
6a...Tail end of boom telescoping cylinder, 10
・・・・・・Cylinder tube,・10b・・・・・・
Cylinder tube tip, 11...Rod, 1
2... Cylinder support member, 13-... Trunnion shaft, 21.22... Interlocking telescopic member, 2
5... Gap foil members, 25a, 25b...
・End of guide member, 25C...Guide surface, 2
6...Guide support member.

Claims

[Scope of utility model registration request]

The first stage boom of a telescoping boom 1 having at least a first stage boom 2 side, a second stage boom 3, a third stage boom 4, and a fourth stage boom 5, which are fitted into telescopic mouth plugs. 2 and the second stage boom 3, a boom telescoping cylinder 6 having a cylinder tube 10 and a rod 11 is placed between the cylinder tube 10 and the second stage boom 2, and the rod 11 is placed on the first stage boom 2 side. The protruding end portions 10b are respectively connected to the second stage boom 3, while the third and fourth stage booms 1.4. 5,000, this is made extendable and retractable by appropriate means, and a guide member 25 having a smooth guide surface 25C of an appropriate length is erected between the third stage boom 4 and the fourth stage boom 5. one end 2
5b is attached to the third stage boom 4 side, while the other end 2
5a, so that the guide support member 26 26 for supporting the girder guide member 25 can be constantly moved relative to the fourth stage boom 5 in its axial direction within the entire stroke range of the boom telescoping cylinder 6. A cylinder support member 12 for supporting a cylinder mounted on the fourth stage boom 5 and attached to the tail end 6a of the cylinder 6 for boom expansion/contraction is mounted on the guide member 25. A support structure for a boom telescoping cylinder in a telescoping boom, characterized in that the cylinder is placed on the guide member 25 so as to be able to move relative to the guide member 25 in the axial direction at all times within the entire stroke range of the boom.