JPS644955Y2 - - Google Patents
Info
- Publication number
- JPS644955Y2 JPS644955Y2 JP5616484U JP5616484U JPS644955Y2 JP S644955 Y2 JPS644955 Y2 JP S644955Y2 JP 5616484 U JP5616484 U JP 5616484U JP 5616484 U JP5616484 U JP 5616484U JP S644955 Y2 JPS644955 Y2 JP S644955Y2
- Authority
- JP
- Japan
- Prior art keywords
- chuck
- key
- rotation
- rotation transmission
- rod
- 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
- 230000005540 biological transmission Effects 0.000 claims description 16
- 239000011435 rock Substances 0.000 claims description 13
- 239000000956 alloy Substances 0.000 claims description 6
- 229910045601 alloy Inorganic materials 0.000 claims description 6
- 230000002093 peripheral effect Effects 0.000 claims description 4
- 239000000463 material Substances 0.000 description 8
- 238000003466 welding Methods 0.000 description 5
- 239000001996 bearing alloy Substances 0.000 description 4
- 238000005553 drilling Methods 0.000 description 4
- 229910000906 Bronze Inorganic materials 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 2
- 239000010974 bronze Substances 0.000 description 2
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000011162 core material Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Landscapes
- Earth Drilling (AREA)
- Percussive Tools And Related Accessories (AREA)
- Drilling And Exploitation, And Mining Machines And Methods (AREA)
Description
【考案の詳細な説明】
〔産業上の利用分野〕
この考案は、さく岩機の回転伝達部構造に関
し、特に、ピストンの打撃によつて摺動するシヤ
ンクロツドとチヤツクとの間に潤滑性の良好な合
金からなるキーを嵌着し、このキーを介して回転
を伝達することにより、シヤンクロツドの溶着を
防止するものである。[Detailed description of the invention] [Industrial field of application] This invention relates to the structure of the rotation transmission part of a rock drill, and in particular, it aims to provide good lubricity between the shaft and the chuck, which slide due to the impact of the piston. By fitting a key made of a suitable alloy and transmitting rotation through this key, welding of the shank rod is prevented.
一般に、さく岩機は、第６図に示すように、本
体１に打撃用のピストン２と回転用のモータ３と
チヤツク４とを備えており、このチヤツク４にシ
ヤンクロツド５を挿着し、このシヤンクロツド５
にロツド６を接続用スリーブ７で接続し、ピスト
ン２の前後進でシヤンクロツド５の後端面に打撃
を与えると共に、モータ３の回転をチヤツク４か
らシヤンクロツド５へ伝達することによりさく孔
を行なうように構成されている。
In general, a rock drill is equipped with a main body 1, a piston 2 for impact, a motor 3 for rotation, and a chuck 4, as shown in FIG. Shankrod 5
The rod 6 is connected to the chuck 4 by a connecting sleeve 7, and the piston 2 moves back and forth to impact the rear end surface of the shank rod 5, and the rotation of the motor 3 is transmitted from the chuck 4 to the shank rod 5, thereby drilling a hole. It is configured.
ここで、打撃によつて前後方向に摺動するシヤ
ンクロツド５へチヤツク４の回転を伝達するた
め、チヤツク４とシヤンクロツド５にスプライン
８が形成されている。このスプライン８はさく孔
作業中回転伝達のため大きなトルクで圧接されて
おり、高い面圧と打撃に伴う激しい変動負荷を受
へシヤンクロツド５が前後に摺動する。従つて、
チヤツク４とシヤンクロツド５とが鋼製の場合に
は、摩擦で発熱と潤滑不良を生じ溶着、破損事故
を惹起することが多い。 Here, a spline 8 is formed on the chuck 4 and the shank rod 5 in order to transmit the rotation of the chuck 4 to the shank rod 5 which slides in the front and back direction when struck. This spline 8 is pressed with a large torque to transmit rotation during drilling work, and the shunt rod 5 slides back and forth under the high surface pressure and violently fluctuating load caused by impact. Therefore,
When the chuck 4 and the shunt rod 5 are made of steel, friction often causes heat generation and poor lubrication, leading to welding and breakage.
従来、この対策としてチヤツク４にリン青銅な
ど潤滑性の良好軸受合金を使用することが試みら
れた。 Conventionally, as a countermeasure to this problem, attempts have been made to use a bearing alloy with good lubricity such as phosphor bronze for the chuck 4.
しかしながら、チヤツク４の如き複雑な形状の
ものに軸受合金を使用すると強度が不足し、打撃
ピストン２の打撃による強烈な振動と回転時の引
張応力によつてスプライン８の角部に亀裂が生じ
やすく、長期間の使用に耐えず、しかも極て高価
となる。
However, if a bearing alloy is used for something with a complicated shape like the chuck 4, the strength will be insufficient, and cracks will easily occur at the corners of the spline 8 due to the intense vibration caused by the impact of the striking piston 2 and the tensile stress during rotation. , cannot withstand long-term use, and is extremely expensive.
この考案は、さく岩機の回転伝達部におけるか
かる問題を解決するものである。 This invention solves this problem in the rotation transmission section of a rock drill.
而して、この考案の目的は、潤滑性が良好で溶
着を生ずることなく、しかも強度の大なさく岩機
の回転伝達部を提供するにあり、また、この考案
の目的は、長期間の使用に耐え得る安価なさく岩
機の回転伝達部を提供するにある。 Therefore, the purpose of this invention is to provide a rotation transmission part for a rock drilling machine that has good lubricity, does not cause welding, and has high strength. The purpose of the present invention is to provide a rotation transmission part for a rock drill that is inexpensive and durable for use.
この考案は、さく岩機のチヤツクの内周面とこ
のチヤツクに挿着されるシヤンクロツドの外周面
とに、シヤンクロツドの軸線と平行な複数のキー
溝を設け、このキー溝に潤滑性の良好な合金から
なる回転伝達用キーを摺動可能に嵌着し、チヤツ
クからこの回転伝達用キーを介してシヤンクロツ
ドへ回転を伝達するように構成するものであつ
て、回転伝達用キーの材質を任意に選択でき、形
状が単純化されるため強度が大で耐久性が向上す
る。
This idea involves providing a plurality of keyways parallel to the axis of the shank rod on the inner peripheral surface of the chuck of the rock drill and the outer periphery of the shank rod that is inserted into this chuck. A rotation transmission key made of an alloy is slidably fitted, and the rotation is transmitted from the chuck to the shunt rod via the rotation transmission key, and the material of the rotation transmission key can be arbitrarily selected. It can be selected and the shape is simplified, resulting in greater strength and improved durability.
以下、図面を参照してこの考案の実施例を説明
する。
Hereinafter, embodiments of this invention will be described with reference to the drawings.
第１図は、この考案の一実施例であるさく岩機
の回転伝達部構造を示す縦断面図、第２図は、第
１図の−線断面図である。 FIG. 1 is a longitudinal sectional view showing the structure of a rotation transmitting part of a rock drill which is an embodiment of this invention, and FIG. 2 is a sectional view taken along the line -- in FIG.
この実施例のさく岩機の基本的構成は、第６図
に示す従来のものと同様であり、本体１に打撃用
のピストン２と回転用のモータ３とチヤツク４と
を備えており、このチヤツク４にシヤンクロツド
５が挿着されている。 The basic structure of the rock drill of this embodiment is the same as that of the conventional rock drill shown in FIG. A shaft 5 is inserted into the chuck 4.
モータ３の出力軸９には歯車１０が取付けられ
ている。チヤツク４は外周にスプラインが形成さ
れていて、スプライン穴を有するスリーブ１１の
前部に嵌合保持されており、このスリーブ１１の
外周上に設けられた歯車部１２がモータ３の歯車
１０と噛合つている。このスリーブ１１は、本体
１内に軸受１３とスラスト軸受１４とで回転可能
に支持されており、その後部内側にはシヤンクロ
ツド５を支持するブツシユ１５が圧入されてい
る。 A gear 10 is attached to the output shaft 9 of the motor 3. The chuck 4 has a spline formed on its outer periphery, and is fitted and held in the front part of a sleeve 11 having a spline hole, and a gear part 12 provided on the outer periphery of this sleeve 11 meshes with a gear 10 of the motor 3. It's on. This sleeve 11 is rotatably supported within the main body 1 by a bearing 13 and a thrust bearing 14, and a bush 15 for supporting the shunt rod 5 is press-fitted inside the rear part of the sleeve 11.
チヤツク４の内周面と、シヤンクロツド５の対
応する外周面には、複数のキー溝１６，１７がシ
ヤンクロツド５の軸線Ｘと平行に設けられてお
り、このキー溝１６，１７には、シヤンクロツド
５と材質の異なる回転伝達用キー１８が摺動可能
に嵌着されている。回転伝達用キー１８は、確実
に回転を伝達でき、強度が大で製作が容易なよう
に、単純な形状するのが好ましく、この実施例で
は、円柱形のものを用いているが、第３図乃至第
５図に示すような断面が楕円形、六角形、四角形
のものなども用いることができる。この回転伝達
用キー１８の材質としては、たとえばリン青銅な
どの軸受合金のような潤滑性の良好な合金を選択
して使用する。軸受合金等の単一材ばかりでな
く、芯材と潤滑性の大な表面材との二層構造を用
いることも可能である。 A number of keyways 16, 17 are provided on the inner peripheral surface of the chuck 4 and the corresponding outer peripheral surface of the shancroft 5, parallel to the axis X of the shancroft 5, and a rotation transmitting key 18 made of a material different from that of the shancroft 5 is slidably fitted into the keyways 16, 17. The rotation transmitting key 18 is preferably of a simple shape so as to be able to transmit rotation reliably, to be strong, and to be easy to manufacture. In this embodiment, a cylindrical key is used, but keys with an elliptical, hexagonal, or rectangular cross section as shown in Figures 3 to 5 may also be used. The material of the rotation transmitting key 18 is selected from an alloy with good lubricity, such as a bearing alloy such as phosphorus bronze. It is possible to use not only a single material such as a bearing alloy, but also a two-layer structure consisting of a core material and a surface material with high lubricity.
さく岩機でさく孔する場合、シヤンクロツド５
の後端面がピストン２によつて打撃され、シヤン
クロツド５は、激しく前後に摺動する。同時にモ
ータ３の回転が歯車１０からスリーブ１１を経て
チヤツク４に伝達され、更にチヤツク４から回転
伝達用キー１８を介してシヤンクロツド５に伝達
される。このとき、摺動と回転の負荷を同時に受
けるチヤツク４とシヤンクロツド５との回転伝達
面は直接接触せず、潤滑性の良好な合金からなる
回転伝達用キー１８を介して接触するから、回転
伝達用キー１８に適切な材料を選択することによ
りシヤンクロツドの溶着が防止される。 When drilling with a rock drill, use the Shankrod 5
The rear end surface is struck by the piston 2, and the shank rod 5 slides violently back and forth. At the same time, the rotation of the motor 3 is transmitted from the gear 10 to the chuck 4 via the sleeve 11, and further transmitted from the chuck 4 to the shaft rod 5 via the rotation transmission key 18. At this time, the rotation transmission surfaces of the chuck 4 and the shaft rod 5, which receive sliding and rotational loads at the same time, do not come into direct contact, but instead come into contact via the rotation transmission key 18 made of an alloy with good lubricity. Selection of a suitable material for the key 18 prevents welding of the shunt rod.
この考案は、上記の如く、チヤツクからシヤン
クロツドへキーを介して回転を伝達するように構
成したため、キーの材質を潤滑性の良好な合金の
うちから適切なものを選択することにより、シヤ
ンクロツドの溶着を防止することができる。また
キーは単純な形式にできるので強度が大で耐久性
があり、仮に破損しても部分的交換ですみ、チヤ
ツク全体に高級な材質を使用する必要がなく安価
に製作でき、経済的である。
As mentioned above, this device is configured to transmit rotation from the chuck to the shunt rod via the key, so by selecting an appropriate material for the key from among alloys with good lubricity, welding of the shunt rod can be achieved. can be prevented. In addition, since the key can be made in a simple format, it is strong and durable, and even if it is damaged, only a partial replacement is required, and there is no need to use high-grade materials for the entire chuck, making it inexpensive to manufacture and economical. .
第１図は、この考案の一実施例であるさく岩機
の回転伝達部構造を示す縦断面図、第２図は第１
図の−線断面図、第３図、第４図、第５図は
回転伝達用キーの他の実施例の形状を示す図、第
６図は、従来のさく岩機の回転伝達部構成の概要
を示す断面図である。
図中、１は本体、２はピストン、３は回転用の
モータ、４はチヤツク、５はシヤンクロツド、１
０は歯車、１１はスリーブ、１５はブツシユ、１
６，１７はキー溝、１８は回転伝達用キーであ
る。
Fig. 1 is a longitudinal sectional view showing the structure of the rotation transmission part of a rock drill which is an embodiment of this invention, and Fig.
3, 4, and 5 are diagrams showing the shapes of other embodiments of the rotation transmission key, and FIG. 6 is a diagram showing the configuration of the rotation transmission part of a conventional rock drill. It is a sectional view showing an outline. In the figure, 1 is the main body, 2 is the piston, 3 is the rotation motor, 4 is the chuck, 5 is the shaft rod, 1
0 is gear, 11 is sleeve, 15 is bush, 1
6 and 17 are key grooves, and 18 is a rotation transmission key.
Claims (1)
シヤンクロツドの外周面とに、該シヤンクロツド
の軸線と平行な複数のキー溝を設け、該キー溝に
潤滑性の良好な合金からなる回転伝達用キーを摺
動可能に嵌着したことを特徴とするさく岩機の回
転伝達部構造。 A plurality of key grooves parallel to the axis of the shank rod are provided on the inner peripheral surface of the chuck and on the outer periphery of the shank rod inserted into the chuck, and the key grooves are made of an alloy with good lubricity for rotation transmission. A rotation transmission structure for a rock drill, characterized in that a key is slidably fitted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5616484U JPS60169387U (en) | 1984-04-17 | 1984-04-17 | Rock drilling machine rotation transmission structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5616484U JPS60169387U (en) | 1984-04-17 | 1984-04-17 | Rock drilling machine rotation transmission structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60169387U JPS60169387U (en) | 1985-11-09 |
| JPS644955Y2 true JPS644955Y2 (en) | 1989-02-08 |
Family
ID=30579500
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5616484U Granted JPS60169387U (en) | 1984-04-17 | 1984-04-17 | Rock drilling machine rotation transmission structure |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60169387U (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2443845C1 (en) * | 2008-01-07 | 2012-02-27 | Сук Син ИН | Vibration hammer |
-
1984
- 1984-04-17 JP JP5616484U patent/JPS60169387U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60169387U (en) | 1985-11-09 |
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