JPH03128786U - - Google Patents
Info
- Publication number
- JPH03128786U JPH03128786U JP3824590U JP3824590U JPH03128786U JP H03128786 U JPH03128786 U JP H03128786U JP 3824590 U JP3824590 U JP 3824590U JP 3824590 U JP3824590 U JP 3824590U JP H03128786 U JPH03128786 U JP H03128786U
- Authority
- JP
- Japan
- Prior art keywords
- boom
- fixing device
- mast
- contraction
- expansion
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000008602 contraction Effects 0.000 claims 2
- 238000009412 basement excavation Methods 0.000 claims 1
- 241001233037 catfish Species 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Earth Drilling (AREA)
Description
第１図は本考案の実施例の側面図、第２図は同
上の要部拡大側面図、第３図は同要部の一部切欠
拡大平面図、第４図ａ，ｂ，ｃはそれぞれ作用を
説明する簡略側面図、第５図は従来例の側面図で
ある。
図中 Ａ……ブーム、Ｂ……固定装置、Ｃ……
連結部、１……機台、３……リーダマスト、６…
…アースオーガ、７……二連リンク、８……油圧
シリンダ、９……移動前端部、１０……ピン、１
１，１２……クレビス、１３……ピン、１５……
環状体、１９……キヤツチフオーク。
Figure 1 is a side view of an embodiment of the present invention, Figure 2 is an enlarged side view of the same essential parts, Figure 3 is an enlarged partially cutaway plan view of the same essential parts, and Figures 4 a, b, and c are respectively A simplified side view for explaining the operation, and FIG. 5 is a side view of a conventional example. In the diagram A...boom, B...fixing device, C...
Connection part, 1... Machine base, 3... Leader mast, 6...
...Earth auger, 7...Double link, 8...Hydraulic cylinder, 9...Moving front end, 10...Pin, 1
1, 12...clevis, 13...pin, 15...
Annular body, 19... Catfish oak.
Claims (1)
に案内されて掘削具等が昇降する掘削装置におい
て、ブームＡにマスト中間部３ａを起伏自在に枢
支し、搭載したシリンダ８による伸縮と外力によ
る伸縮を選択できる固定装置Ｂの後端を、横ピン
１０ａでブームＡに枢着し、マスト中間部３ａを
回転自在に保持する環状体１５と、前記固定装置
Ｂの移動前端部９とを、リーダマスト３を前後振
れ、プロペラ回転、横振れさせる３個のピン１０
，１３，１４を有する連結部Ｃを介して接続して
成る掘削装置。 Decomposable leader mast 3 pivotally supported by boom A
In an excavation equipment in which excavating tools and the like are raised and lowered by being guided by a boom A, the rear end of a fixing device B is configured such that a mast intermediate portion 3a is pivotally supported on a boom A so as to be able to rise and fall freely, and the rear end of a fixing device B can be selected between expansion and contraction by a mounted cylinder 8 and expansion and contraction by an external force. An annular body 15, which is pivotally attached to the boom A by a horizontal pin 10a and rotatably holds the mast intermediate section 3a, and the movable front end 9 of the fixing device B are connected to prevent the leader mast 3 from swinging back and forth, propeller rotation, and sideways swinging. 3 pins 10
, 13, 14, which are connected via a connecting portion C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3824590U JPH03128786U (en) | 1990-04-09 | 1990-04-09 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3824590U JPH03128786U (en) | 1990-04-09 | 1990-04-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03128786U true JPH03128786U (en) | 1991-12-25 |
Family
ID=31546076
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3824590U Pending JPH03128786U (en) | 1990-04-09 | 1990-04-09 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03128786U (en) |
-
1990
- 1990-04-09 JP JP3824590U patent/JPH03128786U/ja active Pending
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