JPH0461147U - - Google Patents

Description

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は本考案にかかる側溝堀り掘削機のブー
ムオフセツト装置の一実施例を示し、ａは側面図
、ｂはａの平面図、第２図は本考案と従来の相違
を示す比較図で、ａは本考案、ｂは従来例、第３
図は従来の側溝堀り掘削機のブームオフセツト装
置を示し、ａは側面図、ｂは平面図、第４図は第
３図を改良した従来例を示し、ａは側面図、ｂは
平面図である。 １……上部旋回体、２……第１ブーム、３……
第２ブーム、３ａ……側面、４……第３ブーム、
４ａ……側面、５……アーム、６……バケツト、
７……運転室、８……オフセツトシリンダ、９…
…リンクロツド。 Fig. 1 shows an embodiment of the boom offset device for a ditch digging excavator according to the present invention, where a is a side view, b is a plan view of a, and Fig. 2 is a comparison showing the differences between the present invention and the conventional one. In the figure, a is the present invention, b is the conventional example, and third
The figures show a conventional boom offset device for a ditch digging excavator, in which a is a side view, b is a plan view, and Fig. 4 shows a conventional example improved from Fig. 3, a is a side view, and b is a plan view. It is a diagram. 1... Upper revolving body, 2... First boom, 3...
2nd boom, 3a...side, 4...3rd boom,
4a...Side, 5...Arm, 6...Bucket,
7... Driver's cab, 8... Offset cylinder, 9...
…Linked.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 上部旋回体の上下方向に起伏可能とした第１ブ
ームを設け、この第１ブームの先端に左右方向に
回動可能とした第２ブームを設け、第２ブームの
先端に左右方向に回動可能とした第３ブームを設
け、第３ブームの先端にアームを上下方向に回動
可能として、その先端にバケツトを上下方向に回
動可能に設けた側溝堀り掘削機において、前記第
２ブームと第３ブームとの間に、前記第３ブーム
を左右方向に回動させるオフセツトシリンダを前
記上部旋回体の左右中心に対して運転室が置かれ
た側に設けると共に、前記第１ブームと第３ブー
ムとの間に、前記第２ブームと平行となるリンク
ロツドを前記オフセツトシリンダと同じ側に連結
したことを特徴とする側溝堀り掘削機のブームオ
フセツト装置。 A first boom that can be raised and lowered in the vertical direction of the upper revolving structure is provided, a second boom that can be rotated in the left and right directions is provided at the tip of the first boom, and the second boom can be rotated in the left and right directions at the tip of the second boom. In a ditch digging excavator, a third boom is provided, an arm is provided at the tip of the third boom so as to be rotatable in the vertical direction, and a bucket is provided at the tip of the third boom so as to be rotatable in the vertical direction. An offset cylinder for rotating the third boom in the left-right direction is provided between the first boom and the third boom on the side where the operator's cab is placed with respect to the left-right center of the upper revolving structure. 3. A boom offset device for a ditch digging excavator, characterized in that a link rod parallel to the second boom is connected to the same side as the offset cylinder between the boom and the second boom.