JPH026152Y2 - - Google Patents
Info
- Publication number
- JPH026152Y2 JPH026152Y2 JP1984034865U JP3486584U JPH026152Y2 JP H026152 Y2 JPH026152 Y2 JP H026152Y2 JP 1984034865 U JP1984034865 U JP 1984034865U JP 3486584 U JP3486584 U JP 3486584U JP H026152 Y2 JPH026152 Y2 JP H026152Y2
- Authority
- JP
- Japan
- Prior art keywords
- rod
- hole
- shank rod
- rotational force
- striking
- 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.)
- Expired
Links
- 239000012530 fluid Substances 0.000 claims description 5
- 230000005540 biological transmission Effects 0.000 description 5
- 239000011435 rock Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000009527 percussion Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Landscapes
- Drilling And Exploitation, And Mining Machines And Methods (AREA)
Description
【考案の詳細な説明】
本考案は、クローラドリル等に用いられている
回転打撃式ドリフタのエアスイベル機構に特徴を
有するものである。[Detailed Description of the Invention] The present invention is characterized by an air swivel mechanism of a rotary percussion type drifter used in crawler drills and the like.
クローラドリルの前記ドリフタについて従来例
を説明すると、第１図に示すように該クローラド
リルａは、ドリフタｂ、該ドリフタｂのシヤンク
ロツド１に連結されたロツドｃ、ロツドｃの先端
部に配設されたビツトｄ等よりなり、シヤンクロ
ツド１に与えられた回転力および打撃力がロツド
ｃを介してビツトｄに伝達されて岩盤を削孔する
ようになつており、また、エアスイベル機構から
シヤンクロツド１、ロツドｃの孔内に圧縮空気を
流入し、ビツトｄに供給して岩の繰粉を排出する
構造になつている。 To explain a conventional example of the drifter of a crawler drill, as shown in FIG. The rotational force and impact force applied to the shank rod 1 are transmitted to the shank rod 1 via the rod c to drill the rock, and the air swivel mechanism connects the shank rod 1 and the rod 1 to the bit d. The structure is such that compressed air flows into the hole c, supplies it to the bit d, and discharges rock powder.
また、従来の前記ドリフタは、第２図に示すよ
うに油圧モータ２、油圧モータ２によつて駆動さ
れるピニオン３、ピニオン３に噛合したギヤ４、
およびギヤ４とシヤンクロツド１間に設けられた
スプライン係合５等によつて回転機構が構成さ
れ、シヤンクロツド１の後端面に対設された油圧
による往復駆動型のピストン６によつて打撃機構
とし、さらに、図示省略したエアコンプレツサー
に接続されたコネクタ７、コネクタに連通されシ
ヤンクロツド１の縦穴９に連設された横穴８等に
よつてエアスイベル機構が構成されて、前記回転
機構のスプライン係合５即ち回転力伝達部からシ
ヤンクロツド１に回転力が与えられ、前記打撃機
構のピストン６によつてシヤンクロツド１の後端
面に打撃力を与え、前記エアスイベル機構の横穴
８からシヤンクロツド１の縦穴９内に圧縮空気が
流入される構造になつており、シヤンクロツド１
における前記回転力伝達部の前部側にエアスイベ
ル機構が配設されている。 Further, as shown in FIG. 2, the conventional drifter includes a hydraulic motor 2, a pinion 3 driven by the hydraulic motor 2, a gear 4 meshing with the pinion 3,
A rotation mechanism is constituted by a spline engagement 5 provided between the gear 4 and the shunt rod 1, and a striking mechanism is constituted by a reciprocating piston 6 driven by hydraulic pressure installed opposite to the rear end surface of the shunt rod 1. Further, an air swivel mechanism is constituted by a connector 7 connected to an air compressor (not shown), a horizontal hole 8 connected to the connector and connected to a vertical hole 9 of the shunt rod 1, etc., and the spline engagement of the rotation mechanism 5, that is, a rotational force is applied to the shank rod 1 from the rotational force transmission section, and a striking force is applied to the rear end surface of the shank rod 1 by the piston 6 of the striking mechanism, and the force is applied from the horizontal hole 8 of the air swivel mechanism into the vertical hole 9 of the shank rod 1. It has a structure that allows compressed air to flow in, and the shank rod 1
An air swivel mechanism is disposed on the front side of the rotational force transmission section.
しかし、従来の前記ドリフタにおいては、シヤ
ンクロツド１の後部、後端面に回転力および打撃
力が与えられ、その回転力および打撃力が前部の
ロツドｃに伝達されて岩盤を削孔するようになつ
ており、該シヤンクロツド１は非常に可酷な条件
にさらされるものであつて、特にシヤンクロツド
の縦穴９に圧縮空気を流入するエア継手構造の前
記エアスイベル機構は、シヤンクロツド１におけ
る回転力伝達部（スプライン係合５）の前部側、
即ち強大な捩りトルクを受ける部分に配設され、
強大な捩りトルクを受ける部分のシヤンクロツド
に横穴８を穿設して該部の断面積が小さくなつて
いるため、横穴形成部分における応力集中係数が
著しく大きくなり、該部においてシヤンクロツド
が破損し易くなり寿命が短かくなる欠点がある。 However, in the conventional drifter, rotational force and impact force are applied to the rear end of the shaft 1, and the rotational force and impact force are transmitted to the front rod c to drill a hole in the rock. The shank rod 1 is exposed to extremely harsh conditions. In particular, the air swivel mechanism, which has an air joint structure in which compressed air flows into the vertical hole 9 of the shank rod 1, the front side of engagement 5);
In other words, it is placed in a part that receives strong torsional torque.
Since the lateral hole 8 is drilled in the shank rod in the part that receives a strong torsional torque and the cross-sectional area of this part is reduced, the stress concentration coefficient in the part where the lateral hole is formed becomes significantly large, making the shank rod more likely to be damaged in this area. The disadvantage is that the lifespan is shortened.
本案は、従来のドリフタにおける前記のような
欠点を解消する考案であつて、シヤンクロツド
に、中心縦穴と、該縦穴に連る横穴とを介して流
体を流入するようにしたエアスイベル機構と、シ
ヤンクロツドに、外周のスプライン係合を介して
回転力を与える回転機構と、シヤンクロツドに後
端の打撃面を介して打撃力を与える打撃機構とを
有するドリフタにおいて、前記エアスイベル機構
を前記回転機構の後端部側に配設した構成に特徴
を有し、シヤンクロツドにおける回転力伝達部の
後部側にエアスイベル機構を設けることにより、
エアスイベル機構の配設部分に、回転力付加によ
つて生ずる捩りトルクが殆んど生じないようにし
て前記応力集中係数を大幅に低減し、シヤンクロ
ツドの寿命を大幅に延長して前記のような欠点を
解消したドリフタを供する点にある。 The present invention is a device to eliminate the above-mentioned drawbacks of conventional drifters, and includes an air swivel mechanism that allows fluid to flow into the shank rod through a central vertical hole and a horizontal hole connected to the vertical hole, and a shank rod. , a drifter having a rotating mechanism that applies a rotational force through spline engagement on the outer periphery, and a striking mechanism that applies a striking force to the shank rod through a striking surface at a rear end, the air swivel mechanism is connected to a rear end of the rotating mechanism. It is characterized by a configuration arranged on the side, and by providing an air swivel mechanism on the rear side of the rotational force transmission part in the shank rod,
The torsional torque caused by the application of rotational force is hardly generated in the installation part of the air swivel mechanism, thereby greatly reducing the stress concentration factor and greatly extending the life of the shank rod, thereby eliminating the above-mentioned drawbacks. The purpose of this invention is to provide a drifter that eliminates this problem.
以下、本考案を図示の実施例によつて説明す
る。第３図に本考案の一実施例を示しており、図
中１１はシヤンクロツド、１２は油圧モータ、１
３は油圧モータ１２によつて駆動されるピニオ
ン、１４はピニオン１３に噛合されたギヤ、１５
はギヤ１４とシヤンクロツド１１との間に設けら
れたスプライン係合、１６はシヤンクロツド１１
の後端部１１ａに対設された油圧による往復駆動
型のピストン、１７は図示省略したエアコンプレ
ツサーに接続されるコネクタ、１８はコネクタ１
７に連通されシヤンクロツド１１の縦穴１９に連
設された横穴、２０はシヤンクロツド１１後部の
シールであつて、油圧モータ１２によつてピニオ
ン１３が駆動されギヤ１４およびスプライン係合
１５によつてシヤンクロツド１１に回転力を与え
る回転機構になつており、ピスオン１６によつて
シヤンクロツド１１に打撃力を与える打撃機構と
し、コネクタ１７および横穴１８を経てシヤンク
ロツド１１の縦穴１９内に圧縮空気を流入するエ
アスイベル機構に構成になつているとともに、図
示のよに回転機構のスプライン係合１５即ち回転
伝達部の後部側、即ちシヤンクロツド１１の後端
側（図示右側）にエアスイベル機構即ち横穴１８
を配設した構成になつており、さらに、前記シヤ
ンクロツド１１の先端側には、第１図に示すよう
にロツドｃ、ビツトｄ等が連設されて削孔する構
成になつている。 Hereinafter, the present invention will be explained with reference to illustrated embodiments. FIG. 3 shows an embodiment of the present invention, in which 11 is a synchronized rod, 12 is a hydraulic motor, and 1 is a hydraulic motor.
3 is a pinion driven by the hydraulic motor 12; 14 is a gear meshed with the pinion 13; 15 is a pinion driven by the hydraulic motor 12;
16 is a spline engagement provided between the gear 14 and the shank rod 11, and 16 is the shank rod 11.
A reciprocating piston driven by hydraulic pressure is installed opposite to the rear end portion 11a, 17 is a connector connected to an air compressor (not shown), and 18 is connector 1
A horizontal hole 20 is a seal at the rear of the shunt rod 11, and a pinion 13 is driven by a hydraulic motor 12, and a gear 14 and a spline engagement 15 drive the shunt rod 11. It has a rotating mechanism that applies a rotational force to the shaft, a striking mechanism that applies a striking force to the shaft 11 by a piston 16, and an air swivel mechanism that flows compressed air into the vertical hole 19 of the shaft 11 through the connector 17 and the horizontal hole 18. As shown in the figure, there is an air swivel mechanism, ie, a side hole 18, on the rear side of the spline engagement 15 of the rotation mechanism, that is, the rotation transmission part, that is, on the rear end side of the shank rod 11 (on the right side in the figure).
Furthermore, as shown in FIG. 1, a rod c, a bit d, etc. are arranged in series on the tip side of the shank rod 11 to drill a hole.
図示した本考案の実施例は、前記のような構成
になつており作用効果について説明すると、該ド
リフタによつて削孔する場合には、油圧モータ１
２によつてピニオン１３が駆動されギヤ１４、ス
プライン係合１５を介してシヤンクロツド１１に
回転力が与えられ、ピストン１６の往復駆動によ
つてシヤンクロツド１１の後端面１１ａに打撃力
が与えられて、前記回転力および打撃力がシヤン
クロツド１１の前部（図示左側）から図示省略し
たロツド、ビツトへ伝達されて削孔するようにな
つているとともに、図示省略したエアコンプレツ
サーからコネクタ１７、横穴１８を経てシヤンク
ロツド１１の縦穴１９内に圧縮空気が流入され、
該圧縮空気はさらにロツドの縦穴を経てビツトの
部分に供給された岩の繰粉を排出するようになつ
ており、このように本考案によるときはシヤンク
ロツド１１に設けた流体導通用の中心縦穴１９
に、該ロツド１１を貫通せずにロツド１１の外周
に設けた横穴１８を介して流体を流入させるよう
にしたエアスイベル機構は、これをシヤンクロツ
ド１１に、その外周のスプライン係合１５により
回転力を与えるようにした回転機構の後端部側に
配設したものであるから、回転機構の回転力によ
つてシヤンクロツド１１の受ける強大な捩りトル
クはエアスイベル機構の横穴１８より前部であつ
て横穴１８の近傍には殆んど捩りトルクが生じな
いため横穴１８における応力集中係数の増加は低
減され、かくてシヤンクロツド１１の中心縦穴１
９に連通する横穴１８をシヤンクロツド１１に設
けるも、これによるシヤンクロツド１１の強度上
の格別な弱点とならず、中心縦穴１９への流体の
連通路の形成が簡単となる等の効果を有する。 The illustrated embodiment of the present invention has the above-mentioned configuration, and to explain the operation and effect, when drilling a hole with the drifter, the hydraulic motor 1
2 drives the pinion 13 and applies rotational force to the shunt rod 11 via the gear 14 and the spline engagement 15, and the reciprocating drive of the piston 16 applies impact force to the rear end surface 11a of the shunt rod 11. The rotational force and impact force are transmitted from the front part (left side in the figure) of the shank rod 11 to a rod and bit (not shown) to drill the hole, and are also transmitted from the air compressor (not shown) to the connector 17 and the side hole 18. Compressed air flows into the vertical hole 19 of the shank rod 11 through
The compressed air is further arranged to discharge the rock chips supplied to the bit part through the vertical hole in the rod, and in this way, according to the present invention, the central vertical hole 19 provided in the shaft rod 11 is used for fluid communication.
In addition, an air swivel mechanism that allows fluid to flow in through a horizontal hole 18 provided on the outer periphery of the rod 11 without penetrating the rod 11 applies rotational force to the shank rod 11 through a spline engagement 15 on the outer periphery. Since the rotation mechanism is disposed at the rear end side of the rotating mechanism, the strong torsional torque that the shank rod 11 receives due to the rotational force of the rotating mechanism is in front of the horizontal hole 18 of the air swivel mechanism. Since almost no torsional torque is generated in the vicinity of the horizontal hole 18, the increase in the stress concentration factor in the horizontal hole 18 is reduced.
Although the horizontal hole 18 communicating with the central vertical hole 19 is provided in the shunt rod 11, it does not become a particular weakness in the strength of the shunt rod 11, and has the effect of simplifying the formation of a fluid communication path to the central vertical hole 19.
第１図はクローラドリルの機構を示す側視図、
第２図は従来のドリフタの主要部を示す縦断面
図、第３図は本考案の一実施例を示すドリフタ主
要部の縦断面図である。
１１……シヤンクロツド、１２，１３，１４，
１５……回転機構、１５……回転伝達部（スプラ
イン係合）、１６……打撃機構（ピストン）、１
７，１８……スイベル機構、１９……縦穴。
Figure 1 is a side view showing the mechanism of the crawler drill;
FIG. 2 is a vertical cross-sectional view showing the main part of a conventional drifter, and FIG. 3 is a vertical cross-sectional view of the main part of a drifter showing an embodiment of the present invention. 11...Syankrod, 12, 13, 14,
15... Rotation mechanism, 15... Rotation transmission section (spline engagement), 16... Impact mechanism (piston), 1
7, 18...Swivel mechanism, 19...Vertical hole.
Claims (1)
横穴とを介して流体を流入するようにしたエアス
イベル機構と、シヤンクロツドに、外周のスプラ
イン係合を介して回転力を与える回転機構と、シ
ヤンクロツドに後端の打撃面を介して打撃力を与
える打撃機構とを有するドリフタにおいて、前記
エアスイベル機構を前記回転機構の後端部側に配
設したことを特徴とするドリフタ。 An air swivel mechanism that allows fluid to flow into the shank rod through a central vertical hole and a horizontal hole connected to the vertical hole; a rotation mechanism that applies rotational force to the shank rod through spline engagement on the outer periphery; What is claimed is: 1. A drifter comprising a striking mechanism that applies a striking force through a striking surface at an end, wherein the air swivel mechanism is disposed at a rear end side of the rotating mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3486584U JPS60148391U (en) | 1984-03-13 | 1984-03-13 | drifter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3486584U JPS60148391U (en) | 1984-03-13 | 1984-03-13 | drifter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60148391U JPS60148391U (en) | 1985-10-02 |
| JPH026152Y2 true JPH026152Y2 (en) | 1990-02-14 |
Family
ID=30538632
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3486584U Granted JPS60148391U (en) | 1984-03-13 | 1984-03-13 | drifter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60148391U (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2531792Y2 (en) * | 1990-11-10 | 1997-04-09 | 鉱研工業株式会社 | Structure of the hammer sub-connection in rotary percussion drills |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5720711U (en) * | 1980-07-11 | 1982-02-03 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5524232Y2 (en) * | 1975-03-07 | 1980-06-10 |
-
1984
- 1984-03-13 JP JP3486584U patent/JPS60148391U/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5720711U (en) * | 1980-07-11 | 1982-02-03 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60148391U (en) | 1985-10-02 |
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