JPH049454U

JPH049454U -

Info

Publication number: JPH049454U
Application number: JP4673390U
Authority: JP
Priority date: 1990-05-01
Filing date: 1990-05-01
Publication date: 1992-01-28

Description

[Brief explanation of the drawing]

第１図は本考案にかかるパワーシヨベルの要部
を示す斜視図、第２図はバケツト及びアタツチメ
ントを駆動するための油圧回路図、第３図はパワ
ーシヨベルの一般的な全体構成図、第４図は従来
のパワーシヨベルを示す第１図と同様の図である
。５……バケツト、８……バケツト用油圧シリン
ダ、１４……アタツチメント、１５……アタツチ
メント用油圧シリンダ、１７……切換弁（切換手
段）、１８，１９……油圧管路（第１の油圧管路
）、２０……油圧管路（第２の油圧管路）、２２
……油圧ポンプ（油圧供給源）。 Fig. 1 is a perspective view showing the main parts of the power shovel according to the present invention, Fig. 2 is a hydraulic circuit diagram for driving the bucket and attachment, Fig. 3 is a general general configuration diagram of the power shovel, and Fig. 4 is FIG. 2 is a diagram similar to FIG. 1 showing a conventional power shovel. 5...Bucket, 8...Hydraulic cylinder for bucket, 14...Attachment, 15...Hydraulic cylinder for attachment, 17...Switching valve (switching means), 18, 19...Hydraulic pipe line (first hydraulic pipe ), 20... Hydraulic pipe line (second hydraulic pipe line), 22
...Hydraulic pump (hydraulic supply source).

Claims

[Scope of Claim for Utility Model Registration] A hydraulic cylinder for a bucket to drive a bucket by hydraulic pressure supplied from a hydraulic supply source through a first hydraulic pipe line, and a second hydraulic pipe line from the hydraulic pressure supply source. In the power shovel, the second hydraulic pipe line is branched from the middle of the first hydraulic pipe line, and the second hydraulic line is branched from the middle of the first hydraulic line, and the second hydraulic line is branched from the middle of the first hydraulic line, and the second hydraulic line is branched from the middle of the first hydraulic line. A power shovel, characterized in that a power shovel is provided with a switching means for switching the hydraulic pressure to either the first hydraulic pipe line or the second hydraulic pipe line.