JPH0417487U

JPH0417487U -

Info

Publication number: JPH0417487U
Application number: JP6023490U
Authority: JP
Priority date: 1990-06-06
Filing date: 1990-06-06
Publication date: 1992-02-13

Description

[Brief explanation of the drawing]

第１図は実施例全体の側面図、第２図は要部の
上面図、第３図は同要部の側面図、第４図は同要
部の作用を示す上面図、第５図ａ，ｂ，ｃはそれ
ぞれ別実施例の要部の簡略上面図、第６図ａ，ｂ
，ｃはそれぞれ組立と用い方を順次説明する側面
図、第７図は従来例の側面図である。図中、Ａ……ブーム、Ｂ……進退腕装置、３…
…リーダマスト、３ａ……マスト中間部、８……
油圧シリンダ、９……進退腕装置Ｂの前端、１０
……横ピン、１３……縦ピン、１４……両ロツド
形複動シリンダ、１６……軸架枠、１６ａ……ウ
エブ。 Fig. 1 is a side view of the entire embodiment, Fig. 2 is a top view of the main parts, Fig. 3 is a side view of the main parts, Fig. 4 is a top view showing the action of the main parts, and Fig. 5a. , b, and c are simplified top views of main parts of different embodiments, respectively, and Fig. 6 a, b.
, c are side views for sequentially explaining assembly and usage, respectively, and FIG. 7 is a side view of a conventional example. In the diagram, A...boom, B...advancing/retracting arm device, 3...
...Leader mast, 3a...Mast middle section, 8...
Hydraulic cylinder, 9... Front end of advancing/retracting arm device B, 10
...Horizontal pin, 13...Vertical pin, 14...Double rod type double acting cylinder, 16...Shaft frame, 16a...Web.

Claims

[Scope of Claim for Utility Model Registration] 1. In an excavation rig in which excavating tools, etc. are raised and lowered guided by a disassembled leader mast 3 which is pivoted by a boom A so as to be able to raise and lower and rotate the propeller, self-powering by a mounted hydraulic cylinder 8 The rear end of the advancing/retracting arm device B, which can select between expansion and contraction and driven expansion and contraction by an external force, is pivotally connected to the boom A, and leads to the ends of both rods 14b of a double-rod type double-acting cylinder 14, which can select between self-powered lateral movement and driven lateral movement by external force. A horizontal pin 10 that enables the mast 3 to swing back and forth is formed, and the horizontal pin 10 is connected to the shaft frame 1.
6, and the main body 14a of the double-rod type double-acting cylinder 14 and the web 16a of the shaft frame 16 are respectively opposed to the front end 9 of the advancing/retracting arm device B and the side part of the mast intermediate part 3a. When the drilling equipment is connected, a vertical pin 13 in the front and rear direction is interposed on one side of the leader mast 3 to enable propeller rotation. 2 Web 16a of shaft frame 16 and mast intermediate section 3
2. The excavation device according to claim 1, further comprising a vertical pin (13) interposed between the vertical pin (13) and the side portion of (a). 2. The excavation device according to claim 1, wherein a vertical pin 13 is interposed between the web 16a of the three-axis frame 16 and the front end 9 of the advancing/retracting arm device B. 4. The excavating device according to claim 1, wherein a vertical pin 13 is interposed between the main body 14a of the double-rod double-acting cylinder 14 and the side of the mast intermediate portion 3a. 5. The excavating device according to claim 1, wherein a vertical pin 13 is interposed between the main body 14a of the double-rod type double-acting cylinder 14 and the front end 9 of the advancing/retracting arm device B.