JPS64694U

JPS64694U -

Info

Publication number: JPS64694U
Application number: JP9329887U
Authority: JP
Priority date: 1987-06-19
Filing date: 1987-06-19
Publication date: 1989-01-05

Description

[Brief explanation of the drawing]

第１図は本考案を採用したアースドリルの全体
側面図、第２図は第１図のＡ部拡大平面図、第３
図は同側面図、第４図はフロントフレームの起伏
状態を説明するための側面図である。１：下部走行体、２：上部旋回体、３：ブーム
、４：ケリーバ、５：ドリリングバケツト、６：
ケリーバ駆動用ロータリーテーブル、７：フロン
トフレーム、７ａ：アツパーフレーム、７ｂ：ロ
ワーフレーム、８：連結ピン、９：油圧シリンダ
、１０：固定用ピン、１１：インジケータ、１２
，１３：リンク、１４：運転室、１５：ロワーフ
レームの補強リブ、１５ａ，１５ｂ：ラグ、１６
：ブラケツト、１７：アツパーフレームに突設さ
れたラグ、１７ａ，１７ｂ：位置決め用孔、１８
：ケリーバの支持ロープ、１９：ブームの俯仰シ
リンダ、２０：フロントフレーム起伏装置。 Figure 1 is an overall side view of an earth drill adopting the present invention, Figure 2 is an enlarged plan view of section A in Figure 1, and Figure 3 is an enlarged plan view of section A in Figure 1.
This figure is a side view of the same, and FIG. 4 is a side view for explaining the undulating state of the front frame. 1: Lower traveling body, 2: Upper revolving body, 3: Boom, 4: Kelly bar, 5: Drilling bucket, 6:
Rotary table for Kerry bar drive, 7: Front frame, 7a: Upper frame, 7b: Lower frame, 8: Connection pin, 9: Hydraulic cylinder, 10: Fixing pin, 11: Indicator, 12
, 13: Link, 14: Driver's cab, 15: Reinforcement rib of lower frame, 15a, 15b: Lug, 16
: Bracket, 17: Lug protruding from upper frame, 17a, 17b: Positioning hole, 18
: Kerryba support rope, 19: Boom elevating cylinder, 20: Front frame elevating device.

Claims

[Scope of utility model registration request]

In a hydraulic earth drill in which a drilling bucket is attached to the lower end of a Kerry bar suspended from the tip of a boom that is attached to an upper revolving body that is rotatably mounted on a lower traveling body equipped with a crawler so that it can be raised and raised. , the front frame supporting the rotary table for driving the Kerry bar is divided into an upper frame that is integrated with the rotary table for driving the Kerry bar, and a lower frame whose base end is pivotally attached to the front part of the upper revolving structure so that it can be raised and lowered, The two are rotatably connected by a connecting pin, and the angle formed between the two can be selectively fixed by a hydraulic cylinder by inserting and removing a fixing pin that can be retracted and retracted. A front frame fixing device for an earth drill, characterized in that an indicator for displaying the status is arranged at a position that is visible from the operator's cab.