JPH02101835U

JPH02101835U -

Info

Publication number: JPH02101835U
Application number: JP739689U
Authority: JP
Priority date: 1989-01-24
Filing date: 1989-01-24
Publication date: 1990-08-14

Description

[Brief explanation of drawings]

第１図はこの考案にかかる旋回縮小装置をそな
えた油圧シヨベルの側面図、第２図は第１図のＤ
部詳細図、第３図は第２図のＥ―Ｅ断面図、第４
図は円板部材の斜視図、第５図は標準仕様の油圧
シヨベルの側面図、第６図は旋回縮小変更を行つ
ている油圧シヨベルの作業姿勢図、第７図は従来
技術旋回縮小装置をそなえた油圧シヨベルの側面
図、第８図は第７図のＣ―Ｃ断面図である。１，１４……旋回縮小装置、３，１５……上部
旋回体、４……作業アタツチメント、６……ブー
ムシリンダ、７，１６……ブラケツト部材、１２
……連結ピン、１７……大径穴部、１８……円板
部材、１９……偏心穴、２０……係止用ブロツク
部材、２１，２２……ストツパ部材。 Figure 1 is a side view of a hydraulic excavator equipped with a swing reduction device according to this invention, and Figure 2 is the D of Figure 1.
Detailed view of the part, Figure 3 is a sectional view taken along line E-E in Figure 2, Figure 4
The figure is a perspective view of a disc member, Figure 5 is a side view of a standard specification hydraulic excavator, Figure 6 is a diagram of the working position of a hydraulic excavator with a swing reduction change, and Figure 7 is a conventional swing reduction device. A side view of the equipped hydraulic excavator, FIG. 8 is a sectional view taken along line C--C in FIG. 7. 1, 14... Swing reduction device, 3, 15... Upper revolving structure, 4... Work attachment, 6... Boom cylinder, 7, 16... Bracket member, 12
... Connection pin, 17 ... Large diameter hole, 18 ... Disc member, 19 ... Eccentric hole, 20 ... Locking block member, 21, 22 ... Stopper member.

Claims

[Scope of utility model registration request]

In a hydraulic excavator in which a work attachment is attached to the front part of the upper revolving body and the boom of the work attachment can be raised and lowered by a boom cylinder, large diameter holes are installed in the left and right upright plates of the bracket member fixed to the front part of the upper revolving body. A disk member with an eccentric hole is rotatably fitted into the large diameter hole, and a locking block member is fixed to the disk member, On the other hand, stopper members are fixedly provided at multiple positions near the large-diameter hole on the side surface of the bracket member, and the connecting pins are inserted through the eccentric holes of the pair of disc members and the pin hole at the base end of the boom cylinder. When the work attachment is rotated and reduced, the above-mentioned disc member can be rotated within the large diameter hole by the telescopic operation of the boom cylinder, and the disc member can be moved to the required rotational displacement position. A swing reduction device for a hydraulic excavator, characterized in that it is configured to be able to be fixedly locked at.