JPH03128748U

JPH03128748U -

Info

Publication number: JPH03128748U
Application number: JP3622890U
Authority: JP
Priority date: 1990-04-03
Filing date: 1990-04-03
Publication date: 1991-12-25

Description

[Brief explanation of the drawing]

第１図はこの考案にかかる請求項第１項の作業
アタツチメントを示す側面図、第２図は第１図に
おけるブームの斜視図、第３図は第１図の作業ア
タツチメントを収納状態にしたときの側面図、第
４図はこの考案にかかる請求項第１項の他実施例
作業アタツチメントを示す側面図、第５図はこの
考案にかかる請求項第２項の他実施例作業アタツ
チメントを示す側面図、第６図は第５図における
ブームシリンダ取付用ブラケツトの斜視図、第７
図は第５図におけるブームの斜視図、第８図は第
５図の実施例側面図、第９図は従来技術の作業ア
タツチメントを装着した小型シヨベルの要部斜視
図である。１，１３，１３′，２０……作業アタツチメン
ト、４，１４……スイングブラケツト、６、１５
，２１……ブーム、７，１８……アーム、９，９
′……ブームシリンダ、１０，１０′……アーム
シリンダ、１６，２２……ブームシリンダ取付用
ブラケツト、１７……アームシリンダ取付用ブラ
ケツト、２３……位置決め用ピン穴、２４……位
置決めピン、２５……ブーム先端ピン、２９……
ブラケツト固定用ピン穴。 Fig. 1 is a side view showing the working attachment of claim 1 according to this invention, Fig. 2 is a perspective view of the boom in Fig. 1, and Fig. 3 shows the working attachment of Fig. 1 in the retracted state. FIG. 4 is a side view showing a working attachment according to another embodiment of claim 1 according to this invention, and FIG. 5 is a side view showing a working attachment according to another embodiment of claim 2 according to this invention. Figure 6 is a perspective view of the boom cylinder mounting bracket in Figure 5, and Figure 7 is a perspective view of the boom cylinder mounting bracket in Figure 5.
5 is a perspective view of the boom in FIG. 5, FIG. 8 is a side view of the embodiment of FIG. 5, and FIG. 9 is a perspective view of essential parts of a small excavator equipped with a conventional work attachment. 1, 13, 13', 20...Work attachment, 4, 14...Swing bracket, 6, 15
, 21... Boom, 7, 18... Arm, 9, 9
'... Boom cylinder, 10, 10'... Arm cylinder, 16, 22... Boom cylinder mounting bracket, 17... Arm cylinder mounting bracket, 23... Positioning pin hole, 24... Positioning pin, 25 ...Boom tip pin, 29...
Pin hole for fixing the bracket.

Claims

[Scope of Claim for Utility Model Registration] (1) In a work attachment in which a boom, an arm, and a work tool are connected to the front part of a small excavator, a boom cylinder mounting bracket is fixed to the rear side of the boom at the tip of the boom. A boom cylinder is provided between the boom cylinder mounting bracket and the swing bracket, and an arm cylinder mounting bracket is fixedly provided on the back of the boom, and the arm cylinder mounting bracket and the rear end of the arm are connected to each other. A working attachment for a small excavator, characterized in that an arm cylinder provided in between is arranged in a space between the rear surface of the boom and the boom cylinder. (2) In the work attachment for a small excavator described in claim 1 of the utility model registration claim, a boom cylinder mounting bracket provided at the tip of the boom is provided separately from the boom, and the boom cylinder mounting bracket is attached to the boom tip pin. It is installed so that it can rotate in the front and back direction around the center, and a pin hole for fixing the bracket is drilled in the boom parallel to the boom tip pin, while a pin hole for fixing the bracket is drilled in the boom cylinder mounting bracket. A working attachment for a small excavator, characterized in that a plurality of positioning pin holes are drilled and positioning pins are selectively inserted into the positioning pin holes and the bracket fixing pin hole. .