JPS6032180U

JPS6032180U - Side frame extension device for crawler cranes

Info

Publication number: JPS6032180U
Application number: JP12441683U
Authority: JP
Inventors: 斎藤　仁宏
Original assignee: 日立建機株式会社
Priority date: 1983-08-12
Filing date: 1983-08-12
Publication date: 1985-03-05

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図は本考案に係るクローラクレーンの側面図、第２
図乃至第４図は従来の下部走行体の平面図を示したもの
で、第２図はサイドフレームを縮小した平面図、第３図
及び第４図はサイドフレームを伸長した平面図、第５図
及び第６図は本考案の一実施例を示したもので、第５図
はサイドフレームを伸長した平面図、第６図はシリンダ
とストッパ材を示した拡大側面図である。３・・・サイドフレーム、５・・・トラックフレーム、
６・・・張り出しビーム、９・・・シリンダ、１０．１
１・・・ピン、１２・・・ストッパ材、１３・・・ボル
ト。Figure 1 is a side view of the crawler crane according to the present invention, Figure 2 is a side view of the crawler crane according to the present invention;
Figures 4 to 4 show plan views of conventional undercarriage bodies. Figure 2 is a plan view with the side frame reduced in size, Figures 3 and 4 are plan views with the side frame extended, and Figure 5 is a plan view with the side frame extended. 6 and 6 show an embodiment of the present invention, FIG. 5 is a plan view of the side frame extended, and FIG. 6 is an enlarged side view showing the cylinder and the stopper member. 3...Side frame, 5...Track frame,
6... Overhanging beam, 9... Cylinder, 10.1
1... Pin, 12... Stopper material, 13... Bolt.

Claims

[Scope of utility model registration request]

In a crawler crane, the overhanging beams provided on both sides of the truck frame are fitted into the mounting holes of the left and right side frames, respectively, and the track width can be changed by expanding and contracting cylinders interposed between the truck frame and the left and right side frames. A pair of cylinders is provided between the overhanging beam and the left and right side frames, respectively.
When the left and right side frames are extended, a stopper material formed to wrap around the rod is inserted into the rod portion of the cylinder to stop the expansion and contraction function of the cylinder, and the load from the left and right side frames is reduced to 1. A side frame extension/retraction device for a crawler crane, characterized in that it can be received as a book stay.