JPS631053U - - Google Patents

Description

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

第１図は、本考案による掘削装置の側面図。第
２図は、第１図の―線断面図。第３図は、本
案と従来の掘削装置とを対比説明するための模式
図。 Ａ：掘削装置、１：旋回台、２：枢支ブラケツ
ト、３：主ブーム、４：副ブーム、５：バケツト
。 FIG. 1 is a side view of the drilling rig according to the present invention. FIG. 2 is a sectional view taken along the line -- in FIG. FIG. 3 is a schematic diagram for comparing and explaining the present invention and a conventional drilling device. A: Excavation equipment, 1: Swivel base, 2: Pivot bracket, 3: Main boom, 4: Sub-boom, 5: Bucket.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 旋回台１前端に主ブーム３基端を枢支ブラケツ
ト２を介して枢支し、同主ブーム３先端には副ブ
ーム４基端を枢支して、同副ブーム４先端にバケ
ツト５を取付け、これら主副ブーム３，４、及び
、バケツト５を第１、第２、第３油圧シリンダー
６，７，８により回動作動させて掘削作業が行な
えるように構成した掘削装置において、主ブーム
３を中央部よりく字状に折曲形成すると共に、同
主ブーム３下半部をさらに略中央部より同一方向
へく字状に折曲形成し、主ブーム３作動用の第１
油圧シリンダー６を、主ブーム３基端部に略平行
状態に近接させて、同主ブーム３中途部と枢支ブ
ラケツト２との間に、介設してなるバツクホーの
掘削装置構造。 The base end of the main boom 3 is pivoted to the front end of the swivel base 1 via the pivot bracket 2, the base end of the sub-boom 4 is pivoted to the tip of the main boom 3, and the bucket 5 is attached to the tip of the sub-boom 4. In the excavation equipment configured such that excavation work can be performed by rotating the main and sub-booms 3, 4 and the bucket 5 using first, second and third hydraulic cylinders 6, 7 and 8, the main boom 3 is bent in a dogleg shape from the center, and the lower half of the main boom 3 is further bent in a dogleg shape in the same direction from approximately the center, and a first
The excavator structure of a backhoe includes a hydraulic cylinder 6 interposed between a midway portion of the main boom 3 and a pivot bracket 2 in a manner substantially parallel to and close to the base end of the main boom 3.