JPH05280273A - Bound-pick and drilling tool - Google Patents
Bound-pick and drilling toolInfo
- Publication number
- JPH05280273A JPH05280273A JP7754892A JP7754892A JPH05280273A JP H05280273 A JPH05280273 A JP H05280273A JP 7754892 A JP7754892 A JP 7754892A JP 7754892 A JP7754892 A JP 7754892A JP H05280273 A JPH05280273 A JP H05280273A
- Authority
- JP
- Japan
- Prior art keywords
- tip
- pick
- round
- shank
- round pick
- 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.)
- Granted
Links
Landscapes
- Road Repair (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
- Drilling And Exploitation, And Mining Machines And Methods (AREA)
- Earth Drilling (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、掘削に用いられるラウ
ンドピックおよびそのラウンドピックが取り付けられた
掘削工具に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a round pick used for excavation and an excavating tool to which the round pick is attached.
【０００２】[0002]
【従来の技術】ラウンドピックは、各種掘削工具に装着
されて地盤の掘削や削岩等を行うもので、従来より例え
ば図９に示すような形状のものが知られている。図９に
おいて、符号１は円柱状をなすシャンクで、その基端側
の一部は縮径されて前記ラウンドピックを掘削工具に取
り付けるための凹部２を形成している。2. Description of the Related Art A round pick is mounted on various excavating tools for excavating the ground, rock drilling, etc., and a round pick having a shape as shown in FIG. 9 has been conventionally known. In FIG. 9, reference numeral 1 is a column-shaped shank, and a part of its base end side is reduced in diameter to form a recess 2 for attaching the round pick to an excavating tool.
【０００３】一方、シャンク１の先端側は先端方向に一
旦拡径後漸次縮径され、シャンク１の先端面には、円柱
状をなし、円錐状の先端を有する超硬合金製のチップ３
が、シャンク１と同軸かつ前記先端をシャンク１の先端
面から突出させた状態で植設されている。On the other hand, the tip side of the shank 1 is once expanded in the tip direction and then gradually reduced in diameter, and the tip surface of the shank 1 is made of a cemented carbide chip 3 having a columnar shape and a conical tip.
However, it is planted in a state of being coaxial with the shank 1 and having the tip protruding from the tip surface of the shank 1.
【０００４】上記従来のラウンドピックは、その軸線を
掘削すべき地盤の表面に対して一定の角度で突出させた
状態で掘削工具に取り付けられる。そして、前記ラウン
ドピックの先端を前記地盤に圧接させつつ前記掘削工具
を前記ラウンドピックの先端側に回転させることにより
チップ３が前記地盤に食い込み、その結果地盤が圧潰し
て掘削が行われる。掘削によりチップ３が摩耗した場合
には、順次新品と交換する。The above-mentioned conventional round pick is attached to an excavating tool with its axis projecting at a constant angle with respect to the surface of the ground to be excavated. Then, the tip 3 bites into the ground by rotating the excavation tool to the tip side of the round pick while pressing the tip of the round pick against the ground, and as a result, the ground is crushed and excavation is performed. When the tip 3 is worn due to excavation, the tip 3 is sequentially replaced with a new one.
【０００５】[0005]
【発明が解決しようとする課題】しかしながら、上記従
来のラウンドピックの場合、掘削中常時地盤と接触し、
その結果、掘削に最も関与するのはラウンドピックのほ
ぼ同一部分であるため、掘削とともに前記地盤との接触
部分のみが局所的に摩耗し、ラウンドピックの寿命が短
くなるという問題があった。However, in the case of the above-described conventional round pick, the ground is constantly contacted during excavation,
As a result, since most of the round picks are most involved in the excavation, there is a problem that only the contact portion with the ground is locally worn during excavation and the life of the round picks is shortened.
【０００６】上記問題を解決するために、例えば実開昭
６０−８７０４号公報に示すようなラウンドピックが開
示されている。これは、図１０に示すように、シャンク
１の先端に植接されたチップ３の外周にチップ３の先端
に向けて伸びる複数の突条４を形成し、この突条４をラ
ウンドピックの軸線に対して二方向に傾斜させることに
より、掘削中ラウンドピックにその軸線回りの回転力を
与え、ラウンドピックにおける局所的な摩耗を防止する
ものである。In order to solve the above problem, for example, a round pick as disclosed in Japanese Utility Model Laid-Open No. 60-8704 is disclosed. As shown in FIG. 10, a plurality of ridges 4 extending toward the tip of the tip 3 are formed on the outer periphery of the tip 3 planted at the tip of the shank 1, and these ridges 4 are used as the axis of the round pick. By inclining in two directions, the round pick is given a rotational force around its axis during excavation to prevent local wear in the round pick.
【０００７】しかしながら、上記考案のラウンドピック
の場合、突条４の形成範囲がシャンク１の先端に植接さ
れたチップ３の外周のみと非常に狭いため、掘削中ラウ
ンドピックに与えられる前記軸線回りの回転力が弱く、
回転によるラウンドピックの局所的な摩耗防止効果が低
いことに加え、シャンク１が摩耗防止手段を持たないた
め、チップ３と比較してシャンク１が摩耗しやすいとい
う問題があった。更に、掘削中直接地盤を圧潰して掘削
を行うのが専らラウンドピックの先端に植接されたチッ
プ３のみであるため、掘削速度が遅いという問題もあっ
た。However, in the case of the round pick of the above-mentioned invention, since the formation range of the protrusion 4 is very narrow only to the outer periphery of the tip 3 planted at the tip of the shank 1, the circumference of the axis given to the round pick during excavation Has a weak turning force,
In addition to the low local abrasion preventing effect of the round pick due to the rotation, the shank 1 has no abrasion preventing means, so that the shank 1 is easily worn as compared with the tip 3. Furthermore, there is a problem that the excavation speed is slow because only the tip 3 which is planted at the tip of the round pick excavates the ground directly during excavation.
【０００８】[0008]
【課題を解決するための手段】本発明は、上記事情に鑑
みてなされたもので、円柱状をなすシャンクの先端面か
ら第一のチップが突出しているとともに、前記シャンク
の外周面から突出する複数個の第二のチップが前記シャ
ンクの周に沿って前記シャンクを回転可能に設けられて
いるラウンドピックおよび、前記ラウンドピックが着脱
自在かつその軸線を中心として自転自在に取り付けら
れ、前記ラウンドピックを公転させて掘削を行う掘削工
具である。The present invention has been made in view of the above circumstances, and the first tip projects from the tip end surface of the columnar shank and also projects from the outer peripheral surface of the shank. A round pick having a plurality of second chips rotatably provided on the shank along the circumference of the shank, and the round pick is detachably attached and rotatably attached about the axis thereof. It is a drilling tool that revolves around and excavates.
【０００９】[0009]
【作用】本発明のラウンドピックにおいては、前記シャ
ンクの外周面から突出する複数個の第二のチップが前記
シャンクの周に沿って前記シャンクを回転可能に設けら
れているため、前記ラウンドピックを掘削工具に取り付
けて掘削を行う場合、前記掘削工具から受けた掘削力の
一部がこれら第二のチップにおいて常時ラウンドピック
の軸線を中心とする回転力に変換される。In the round pick of the present invention, since the plurality of second tips projecting from the outer peripheral surface of the shank are rotatably provided along the circumference of the shank, the round pick is When the excavator is mounted on the excavator and excavated, a part of the excavating force received from the excavator is converted into a rotational force centered on the axis of the round pick at these second chips.
【００１０】特に、前記第二のチップが前記シャンクの
外周面に設けられているので前記第二のチップの面積が
広く、その結果、掘削中ラウンドピックに与えられる前
記回転力が従来のラウンドピックに較べて増大する。Particularly, since the second tip is provided on the outer peripheral surface of the shank, the area of the second tip is large, and as a result, the rotational force given to the round pick during excavation is increased by the conventional round pick. Increase compared to.
【００１１】[0011]
【実施例】以下、図面に基づき、本発明の実施例につい
て更に詳しく説明する。図１および図２は、本発明に係
るラウンドピック１０の形状の例を示すものである。図
１および図２において、符号１１は円柱状をなすシャン
クで、その基端側の一部は縮径されてラウンドピック１
０を掘削工具に取り付けるための凹部１２を形成してい
る。Embodiments of the present invention will now be described in more detail with reference to the drawings. 1 and 2 show examples of the shape of the round pick 10 according to the present invention. In FIGS. 1 and 2, reference numeral 11 denotes a shank having a columnar shape, a part of the base end side of which is reduced in diameter to make a round pick 1.
A recess 12 is formed for attaching 0 to the drilling tool.
【００１２】シャンク１１の先端側は先端方向に一旦拡
径後漸次縮径されて傘状の拡径部１１ａを形成し、更
に、拡径部１１ａの先端からは、先端が漸次縮径された
円柱状の頭部１１ｂが拡径部１１ａの軸線方向に突出し
ている。そして、頭部１１ｂの先端面には砲弾状をなす
第一のチップ１３が、頭部１１ｂと同軸をなし、かつそ
の先端が頭部１１ｂの先端面から突出するように植設さ
れている。The tip side of the shank 11 is once radially expanded in the tip direction and then gradually reduced in diameter to form an umbrella-shaped enlarged portion 11a. Further, the tip of the enlarged diameter portion 11a is gradually reduced in diameter. A cylindrical head portion 11b projects in the axial direction of the expanded diameter portion 11a. The first tip 13 in the shape of a shell is formed on the tip surface of the head portion 11b so as to be coaxial with the head portion 11b and the tip of the tip 13 projects from the tip surface of the head portion 11b.
【００１３】一方、拡径部１１ａの外周面には、棒状を
なし、シャンク１１の先端方向に突出する複数の第二の
チップ１４がそれぞれその長手方向をシャンク１１の軸
線に沿わせて植設されている。この場合、第二のチップ
１４は、図２に示すように、隣接する第二のチップ１４
同士が拡径部１１ａの周に沿って等距離となるように配
設されている。On the other hand, on the outer peripheral surface of the expanded diameter portion 11a, a plurality of second tips 14 each having a rod shape and projecting in the tip direction of the shank 11 are planted so that their longitudinal directions are along the axis of the shank 11. Has been done. In this case, the second chip 14 is adjacent to the second chip 14 as shown in FIG.
They are arranged at equal distances along the circumference of the expanded diameter portion 11a.
【００１４】また、拡径部１１ａと同様、頭部１１ｂの
先端側にも、棒状をなし、シャンク１１の径方向外方向
きに突出する複数の第二のチップ１４ａがそれぞれその
長手方向をシャンク１１の軸線に沿わせて植設されてい
る。この場合にも、第二のチップ１４ａは、図２に示す
ように、隣接する第二のチップ１４ａ同士が頭部１１ｂ
の周に沿って等距離となるように配設される。Further, like the expanded diameter portion 11a, a plurality of second tips 14a each having a rod shape on the tip side of the head portion 11b and projecting outward in the radial direction of the shank 11 are shanked in the longitudinal direction thereof. It is planted along the 11 axis. Also in this case, as shown in FIG. 2, in the second chips 14a, the second chips 14a adjacent to each other have the head portions 11b.
Are arranged so as to be equidistant along the circumference.
【００１５】なお、上記ラウンドピック１０の場合、第
二のチップ１４，１４ａの拡径部１１ａまたは頭部１１
ｂ外周面からの突出部分の断面形状は、いずれも図１ま
たは図２に示すようにその稜辺部が前記外周面からの突
出方向を向く三角形状をなし、また、第二のチップ１
４，１４ａの植接個数は、いずれも８個ずつとされてい
る。更に、上記第一のチップ１３および第二のチップ１
４，１４ａは、いずれも超硬合金製である。In the case of the round pick 10, the expanded diameter portion 11a or the head portion 11 of the second tip 14, 14a.
b As for the cross-sectional shape of the protruding portion from the outer peripheral surface, as shown in FIG. 1 or FIG.
The number of plants to be inoculated with 4, 14a is 8 in each case. Furthermore, the first chip 13 and the second chip 1 described above
All 4 and 14a are made of cemented carbide.
【００１６】次に、上記ラウンドピック１０が取り付け
られた掘削工具の例を以下に示す。図３および図４は、
ラウンドピック１０が取り付けられた路面掘削車両の例
を示す図である。Next, an example of an excavating tool to which the round pick 10 is attached will be shown below. 3 and 4 show
It is a figure which shows the example of the road surface excavation vehicle to which the round pick 10 was attached.
【００１７】図３および図４において、符号１５は路面
掘削車両に装着されるドラムで、その軸線は路面とすべ
き地面と平行とされ、また、ドラム１５の外周面には多
数のピック取り付けブロック１６が配設されている。更
に、各ピック取り付けブロック１６にはラウンドピック
１０が、その軸線をドラム１５の周に対して一定の角度
で傾斜させ、かつその先端をドラム１５の外周面から一
定の角度で突出させた状態で、着脱自在かつその軸線を
中心として回転自在に取り付けられている。In FIGS. 3 and 4, reference numeral 15 is a drum mounted on a road excavation vehicle, the axis of which is parallel to the ground to be the road surface, and a large number of pick mounting blocks are provided on the outer peripheral surface of the drum 15. 16 are provided. Further, the round pick 10 is attached to each pick mounting block 16 with its axis inclined at a constant angle with respect to the circumference of the drum 15 and its tip protruding from the outer peripheral surface of the drum 15 at a constant angle. , Is detachable and is rotatable about its axis.
【００１８】そして、ラウンドピック１０を路面とすべ
き地面に圧接させつつドラム１５をその軸線を中心とし
てラウンドピック１０の先端側に回転させることによ
り、第一のチップ１３の先端が地面に食い込み、その結
果地面が圧潰して掘削が行われる。Then, the drum 15 is rotated around the axis of the round pick 10 toward the tip side of the round pick 10 while the round pick 10 is pressed against the ground to be the road surface, so that the tip of the first chip 13 bites into the ground. As a result, the ground is crushed and excavation is performed.
【００１９】ここで、上記ラウンドピック１０において
は、シャンク１１の先端に第一のチップ１３が設けられ
ていることに加え、シャンク１１の外周面から突出する
第二のチップ１４，１４ａが複数個設けられているた
め、掘削中これら第二のチップ１４，１４ａは第一のチ
ップ１３とともに掘削面に圧接される。Here, in the round pick 10, in addition to the first tip 13 being provided at the tip of the shank 11, a plurality of second tips 14, 14a protruding from the outer peripheral surface of the shank 11 are provided. Since they are provided, these second tips 14 and 14a are pressed against the excavation surface together with the first tip 13 during excavation.
【００２０】ところが、第二のチップ１４，１４ａは前
記シャンク１１の長手方向に沿って突出し、かつラウン
ドピック１０の軸線がドラム１５の周に対して一定の角
度で傾斜しているため、掘削中第二のチップ１４，１４
ａは地面から常時ラウンドピック１０周方向の力を受
け、その結果、掘削中ラウンドピック１０が常時その軸
線回りに回転する。特に、第二のチップ１４，１４ａが
シャンク１１の外周面に広範囲にわたり形成されている
ため、掘削作業中ラウンドピック１０には常時充分な回
転力が付与され、掘削時におけるラウンドピック１０の
局所的な摩耗が防止される。However, since the second tips 14 and 14a project along the longitudinal direction of the shank 11 and the axis of the round pick 10 is inclined at a constant angle with respect to the circumference of the drum 15, during excavation. The second chip 14, 14
The a always receives a force in the circumferential direction of the round pick 10 from the ground, and as a result, the round pick 10 constantly rotates around its axis during excavation. In particular, since the second chips 14 and 14a are formed on the outer peripheral surface of the shank 11 over a wide area, a sufficient rotational force is always applied to the round pick 10 during excavation work, and the round pick 10 is locally exposed during excavation. Wear is prevented.
【００２１】しかも、シャンク１１において掘削中特に
摩耗しやすい拡径部１１ａおよび頭部１１ｂの先端側が
いずれも第二のチップ１４，１４ａにより保護されてい
るため、掘削に伴うシャンク１１の摩耗が有効に防止さ
れる。In addition, since the diametrically expanded portion 11a and the tip end of the head portion 11b of the shank 11 which are particularly susceptible to wear during excavation are protected by the second tips 14 and 14a, the wear of the shank 11 due to excavation is effective. To be prevented.
【００２２】また、第一のチップ１３による掘削ととも
に第二のチップ１４，１４ａによる補助的な掘削も行わ
れるため、掘削速度が早められる。Further, since the excavation by the first tip 13 and the auxiliary excavation by the second tips 14 and 14a are performed, the excavation speed can be increased.
【００２３】図５は、ラウンドピック１０が取り付けら
れたアースオーガの例を示す図である。図５において、
符号１７は円筒状をなすスクリュー軸で、スクリュー軸
１７の周囲にはオーガスクリュー１８がスクリュー軸１
７の軸線を中心として螺旋状に形成されている。FIG. 5 is a diagram showing an example of an earth auger to which the round pick 10 is attached. In FIG.
Reference numeral 17 is a cylindrical screw shaft, and an auger screw 18 is provided around the screw shaft 17 to form the screw shaft 1.
It is formed in a spiral shape around the axis of 7.
【００２４】また、符号２１は中空円筒状をなす中空軸
１９と、その周囲に形成されたオーガスクリュー２０と
から概略構成されるオーガヘッド２１で、オーガヘッド
２１の基端部は継手２２を介してスクリュー軸１７の先
端に接続されている。更に、オーガスクリュー２０の先
端には複数のピック取り付けブロック２３が並列に配設
され、各ピック取り付けブロック２３にはラウンドピッ
ク１０が、その軸線をオーガヘッド２１の径方向に対し
て一定の角度で外方に傾斜させ、かつその先端をオーガ
ヘッド２１の先端から一定の角度で突出させた状態で、
着脱自在かつその軸線を中心として回転自在に取り付け
られている。Reference numeral 21 is an auger head 21 which is roughly composed of a hollow shaft 19 having a hollow cylindrical shape and an auger screw 20 formed around the hollow shaft 19. A base end portion of the auger head 21 has a joint 22 interposed therebetween. And is connected to the tip of the screw shaft 17. Further, a plurality of pick mounting blocks 23 are arranged in parallel at the tip of the auger screw 20, and each pick mounting block 23 has a round pick 10 whose axis is at a constant angle with respect to the radial direction of the auger head 21. With the tip tilted outward and the tip of the tip projected from the tip of the auger head 21 at a constant angle,
It is detachably mounted and rotatable about its axis.
【００２５】そして、ラウンドピック１０を掘削すべき
地盤に圧接させつつスクリュー軸１７をその軸線を中心
としてラウンドピック１０の先端側に回転させることに
より、前記第一のチップ１３の先端が岩盤に食い込み、
その結果地盤が圧潰して掘削が行われる。Then, the screw shaft 17 is rotated around the axis of the round pick 10 toward the tip side of the round pick 10 while the round pick 10 is pressed against the ground to be excavated, so that the tip of the first tip 13 bites into the rock. ,
As a result, the ground is crushed and excavation is performed.
【００２６】図６および図７は、ラウンドピック１０が
取り付けられたシールド掘削機の例を示す図である。図
６および図７において、符号２４は軸線を中心に回転す
る駆動軸で、駆動軸２４の先端部には複数のウイング２
５が駆動軸２４と垂直かつ駆動軸２４の軸線を中心とし
て放射状に取り付けられている。6 and 7 are views showing an example of the shield excavator to which the round pick 10 is attached. In FIGS. 6 and 7, reference numeral 24 is a drive shaft that rotates about an axis, and a plurality of wings 2 are provided at the tip of the drive shaft 24.
Reference numeral 5 is perpendicular to the drive shaft 24 and is mounted radially about the axis of the drive shaft 24.
【００２７】更に、ウイング２５の先端には複数のピッ
ク取り付けブロック２６が配設され、ピック取り付けブ
ロック２６にはラウンドピック１０が、その軸線を駆動
軸２４の軸を中心とする円の周に対して一定の角度で外
方に傾斜させ、かつウイング２５の先端から一定の角度
で突出させた状態で、着脱自在かつその軸線を中心とし
て回転自在に取り付けられている。また、駆動軸２４の
先端には平板状ビット２７がその先端をウイング２５の
先端から突出させた状態で取り付けられている。Further, a plurality of pick mounting blocks 26 are arranged at the tip of the wing 25, and the round pick 10 is mounted on the pick mounting block 26 with respect to the circumference of a circle whose axis is the axis of the drive shaft 24. It is attached detachably and rotatably about its axis in a state of being inclined outward at a constant angle and protruding from the tip of the wing 25 at a constant angle. A flat plate bit 27 is attached to the tip of the drive shaft 24 with its tip protruding from the tip of the wing 25.
【００２８】一方、駆動軸２４の周囲はウイング２５の
直径より若干縮径された円筒状をなすシールド筒２８で
覆われ、駆動軸２４の先端部はシールド筒２８を塞ぐ蓋
２９の中央部に形成された軸受部材３０により支持され
ている。なお、符号３１は、掘削の結果生じた土砂を排
出するための排出口である。On the other hand, the periphery of the drive shaft 24 is covered with a cylindrical shield cylinder 28 having a diameter slightly smaller than the diameter of the wing 25, and the tip end of the drive shaft 24 is in the center of a lid 29 that closes the shield cylinder 28. It is supported by the formed bearing member 30. Reference numeral 31 is a discharge port for discharging the earth and sand generated as a result of excavation.
【００２９】そして、ラウンドピック１０および平板状
ビット２７を掘削すべき地盤に圧接させつつ駆動軸２４
をその軸線を中心としてラウンドピック１０の先端側に
回転させることにより、前記第一のチップ１３および平
板状ビット２７の先端が岩盤に食い込み、その結果岩盤
が圧潰して掘削が行われる。The round pick 10 and the flat plate-shaped bit 27 are pressed against the ground to be excavated while the drive shaft 24 is being pressed.
Is rotated around the axis to the tip side of the round pick 10, the tips of the first tip 13 and the flat plate bit 27 bite into the rock mass, and as a result, the rock mass is crushed for excavation.
【００３０】図８は、ラウンドピック１０が取り付けら
れたロードヘッダの例を示す図である。図８において、
符号３２は軸線を中心に回転する駆動軸で、駆動軸３２
の先端には円錘状をなすドラム３３が駆動軸３２と同軸
をなすように取り付けられている。また、ドラム３３の
周囲には、ドラム３３の外周面から突出するウイング３
４が駆動軸３２の軸線を中心として螺旋状に形成されて
いる。FIG. 8 is a diagram showing an example of a load header to which the round pick 10 is attached. In FIG.
Reference numeral 32 is a drive shaft that rotates around the axis,
A drum 33 having a conical shape is attached to the tip of the shaft so as to be coaxial with the drive shaft 32. In addition, around the drum 33, the wings 3 protruding from the outer peripheral surface of the drum 33 are provided.
4 is formed in a spiral shape around the axis of the drive shaft 32.
【００３１】更に、ウイング３４には複数のピック取り
付けブロック３５が配設され、ビット取り付けブロック
２６にはラウンドピック１０が、その軸線をウイング３
４の突出方向と平行とし、かつウイング３４の先端から
ドラム３３の周方向に一定の角度で突出させた状態で、
着脱自在かつその軸線を中心として回転自在に取り付け
られている。Further, a plurality of pick mounting blocks 35 are arranged on the wing 34, and the round pick 10 is mounted on the bit mounting block 26, and the axis thereof is winged 3.
4 is parallel to the protruding direction, and is projected from the tip of the wing 34 in the circumferential direction of the drum 33 at a constant angle,
It is detachably mounted and rotatable about its axis.
【００３２】そして、ドラム３３の先端を掘削すべき地
盤に圧接させつつ駆動軸３２をその軸線を中心としてラ
ウンドピック１０の先端側に回転させることにより、ド
ラム３３に植設されたラウンドピック１０の先端が地盤
に食い込み、その結果地盤が圧潰して掘削が行われる。Then, the drive shaft 32 is rotated around the axis of the round pick 10 toward the tip side of the round pick 10 while the tip end of the drum 33 is pressed against the ground to be excavated. The tip cuts into the ground, and as a result, the ground is crushed and excavation is performed.
【００３３】上記図５ないし図８に示す各種の掘削工具
においても、上記図３および図４に示す路面掘削車両の
場合と同様、掘削中第二のチップ１４，１４ａは地盤か
ら常時ラウンドピック１０周方向の力を受け、その結
果、掘削中はラウンドピック１０が常時その軸線回りに
回転する。その結果、掘削時におけるラウンドピック１
０の局所的な摩耗が防止される。Also in the various excavating tools shown in FIGS. 5 to 8, the second chips 14 and 14a during excavation are always round picked from the ground in the same manner as in the case of the road excavating vehicle shown in FIGS. 3 and 4. It receives a force in the circumferential direction, and as a result, the round pick 10 constantly rotates around its axis during excavation. As a result, round pick 1 during excavation
Local wear of 0 is prevented.
【００３４】しかも、第二のチップ１４，１４ａの存在
によりシャンク１１が保護され、シャンク１１の摩耗が
有効に防止されるとともに、第二のチップ１４，１４ａ
による補助的な掘削が行われるため、掘削速度も向上す
る。Moreover, the shank 11 is protected by the presence of the second tips 14 and 14a, the wear of the shank 11 is effectively prevented, and the second tips 14 and 14a are also provided.
Since the supplementary excavation is performed by, the excavation speed is also improved.
【００３５】なお、上記実施例において用いたラウンド
ピック１０の場合、第二のチップ１４，１４ａはいずれ
もシャンク１１の長手方向に沿って突出しているが、掘
削中ラウンドピック１０が受ける軸線回りの力を増加さ
せる目的で、第二のチップ１４，１４ａを、シャンク１
１の軸線を中心として螺旋状に突出させてもよい。In the case of the round pick 10 used in the above-mentioned embodiment, both the second tips 14 and 14a project along the longitudinal direction of the shank 11, but the second tip 14 and 14a are located around the axis received by the round pick 10 during excavation. The second tip 14, 14a is attached to the shank 1 for the purpose of increasing the force.
You may make it protrude spirally centering | focusing on the 1 axis line.
【００３６】[0036]
【発明の効果】本発明においては、ラウンドピックを構
成するシャンクの先端に設けられた第一のチップに加
え、シャンクの外周面から突出する第二のチップが新た
に設けられているため、ラウンドピックを掘削工具に取
り付けて掘削を行う場合、前記第二のチップにおいて前
記ラウンドピックが掘削工具から受ける掘削力の一部が
常時ラウンドピックの軸線を中心とする回転力に変換さ
れ、掘削中前記ラウンドピックが常時その軸線回りに回
転する。従って、掘削時における前記ラウンドピックの
局所的な摩耗が防止され、前記ラウンドピックの寿命が
延長される。According to the present invention, in addition to the first tip provided on the tip of the shank forming the round pick, the second tip protruding from the outer peripheral surface of the shank is newly provided, so that the round When the pick is attached to an excavating tool to excavate, a part of the excavating force that the round pick receives from the excavating tool in the second chip is always converted into a rotational force centering on the axis of the round pick, and during the excavating, The round pick always rotates around its axis. Therefore, local wear of the round pick during excavation is prevented, and the life of the round pick is extended.
【００３７】また、前記シャンクの外周面が前記第二の
チップにより保護されているため、掘削に伴う前記シャ
ンクの摩耗が防止される他、前記第一のチップによる掘
削とともに前記第二のチップによる補助的な掘削も行わ
れるため、掘削速度が早められるという効果をも奏す
る。Further, since the outer peripheral surface of the shank is protected by the second tip, abrasion of the shank due to excavation is prevented, and in addition to excavation by the first tip, by the second tip. Since auxiliary excavation is also performed, the excavation speed can be increased.
【図１】本発明におけるラウンドピックの形状の例を示
す側面図である。FIG. 1 is a side view showing an example of the shape of a round pick according to the present invention.
【図２】本発明におけるラウンドピックの形状例を示す
正面図である。FIG. 2 is a front view showing a shape example of a round pick according to the present invention.
【図３】本発明に係る路面掘削車両のドラムの正面図で
ある。FIG. 3 is a front view of a drum of a road excavation vehicle according to the present invention.
【図４】本発明に係る路面掘削車両のドラムのＩＶ−Ｉ
Ｖ線に沿った一部断面図である。FIG. 4 is an IV-I of a drum of a road excavation vehicle according to the present invention.
It is a partial cross section along line V.
【図５】本発明に係るアースオーガの側面図である。FIG. 5 is a side view of an earth auger according to the present invention.
【図６】本発明に係るシールド掘削機の構造の例を示す
一部断面図である。FIG. 6 is a partial cross-sectional view showing an example of the structure of the shield excavator according to the present invention.
【図７】本発明に係るシールド掘削機の正面図である。FIG. 7 is a front view of the shield excavator according to the present invention.
【図８】本発明に係るロードヘッダの形状の例を示す側
面図である。FIG. 8 is a side view showing an example of the shape of the load header according to the present invention.
【図９】従来のラウンドピックの形状の例を示す側面図
である。FIG. 9 is a side view showing an example of the shape of a conventional round pick.
【図１０】従来のラウンドピックの形状の例を示す側面
図である。FIG. 10 is a side view showing an example of the shape of a conventional round pick.
１，１１ シャンク ２，１２ 凹部 ３ チップ ４ 突条 １０ ラウンドピック １１ａ 拡径部 １１ｂ 頭部 １３ 第一のチップ １４，１４ａ 第二のチップ １５，３３ ドラム １６，２３，２６ ピック取り付けブロック １７ スクリュー軸 １８，２０ オーガスクリュー １９ 中空軸 ２１ オーガヘッド ２２ 継手 ２４，３２ 駆動軸 ２５，３４ ウイング ２７ 平板状ビット ２８ シールド筒 ２９ 蓋 ３０ 軸受部材 ３１ 排出口 1, 11 Shank 2, 12 Recess 3 Tip 4 Ridge 10 Round pick 11a Expanded portion 11b Head 13 First tip 14, 14a Second tip 15, 33 Drum 16, 23, 26 Pick mounting block 17 Screw shaft 18,20 Auger screw 19 Hollow shaft 21 Auger head 22 Joint 24,32 Drive shaft 25,34 Wing 27 Flat bit 28 Shield cylinder 29 Lid 30 Bearing member 31 Discharge port
Claims (7)
の先端面から突出する第一のチップと、前記シャンクの
外周面から突出する複数個の第二のチップとを具備し、
かつ前記第二のチップが、前記シャンクの周に沿って前
記シャンクを回転可能に配設されていることを特徴とす
るラウンドピック。1. A shank having a cylindrical shape, a first tip projecting from a tip surface of the shank, and a plurality of second tips projecting from an outer peripheral surface of the shank,
A round pick, wherein the second tip is arranged so that the shank can be rotated along the circumference of the shank.
手方向が前記シャンクの軸線と略平行とされていること
を特徴とする請求項１記載のラウンドピック。2. The round pick according to claim 1, wherein the second tip is rod-shaped, and its longitudinal direction is substantially parallel to the axis of the shank.
を中心に自転自在に取り付け、このラウンドピックを公
転させて掘削を行う掘削工具において、 前記ラウンドピックとして請求項１または２記載のラウ
ンドピックが用いられていることを特徴とする掘削工
具。3. A round pick according to claim 1, wherein the round pick is attached detachably and rotatable about its axis, and the round pick revolves for excavation. The round pick according to claim 1 or 2 is used as the round pick. A drilling tool characterized by being provided.
外周面にラウンドピックを取り付け、前記ラウンドピッ
クを掘削面に圧接させつつ前記ドラムをその軸線を中心
に回転させて掘削を行う路面掘削車両であることを特徴
とする請求項３記載の掘削工具。4. A road surface excavation in which the excavation tool attaches a round pick to the outer peripheral surface of a cylindrical drum, and rotates the drum about its axis while pressing the round pick against the excavation surface. It is a vehicle, The drilling tool of Claim 3 characterized by the above-mentioned.
周囲にオーガスクリューを螺旋状に形成するとともに、
このオーガスクリューの先端にラウンドピックを取り付
け、前記ラウンドピックを地盤に圧接させつつ前記中空
軸をその軸線を中心に回転させて掘削を行うアースオー
ガであることを特徴とする請求項３記載の掘削工具。5. The drilling tool spirally forms an auger screw around a hollow shaft having a cylindrical shape, and
The earth auger for excavating by attaching a round pick to the tip of the auger screw and rotating the hollow shaft around its axis while pressing the round pick against the ground. tool.
筒内に挿通された駆動軸の先端部に複数のウイングを形
成するとともに、これらウイングの先端にラウンドピッ
クを取り付け、前記ラウンドピックを地盤に圧接させつ
つ前記駆動軸をその軸線を中心に回転させて掘削を行う
シールド掘削機であることを特徴とする請求項３記載の
掘削工具。6. The excavating tool forms a plurality of wings at the tip of a drive shaft that is inserted into a shield tube having a cylindrical shape, and attaches round picks to the tips of these wings to attach the round pick to the ground. The excavating tool according to claim 3, wherein the excavating tool is a shield excavator that excavates by rotating the drive shaft about its axis while being pressed against the excavator.
駆動軸と同軸をなすように形成された円錐状をなすドラ
ムの周囲に、前記ドラム外周面から突出するウイングを
螺旋状に形成するとともに、前記ウイングの先端にラウ
ンドピックを取り付け、前記ラウンドピックを地盤に圧
接させつつ前記駆動軸をその軸線を中心に回転させて掘
削を行うロードヘッダであることを特徴とする請求項３
記載の掘削工具。7. The digging tool spirally forms a wing protruding from the outer peripheral surface of the drum around a conical drum formed at the tip of the drive shaft so as to be coaxial with the drive shaft. At the same time, a round pick is attached to the tip of the wing, and the road header excavates by rotating the drive shaft about its axis while pressing the round pick against the ground.
Excavation tool as described.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7754892A JP3123193B2 (en) | 1992-03-31 | 1992-03-31 | Round picks and drilling tools |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7754892A JP3123193B2 (en) | 1992-03-31 | 1992-03-31 | Round picks and drilling tools |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH05280273A true JPH05280273A (en) | 1993-10-26 |
| JP3123193B2 JP3123193B2 (en) | 2001-01-09 |
Family
ID=13637070
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7754892A Expired - Fee Related JP3123193B2 (en) | 1992-03-31 | 1992-03-31 | Round picks and drilling tools |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3123193B2 (en) |
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| US8292372B2 (en) | 2007-12-21 | 2012-10-23 | Hall David R | Retention for holder shank |
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|---|---|---|---|---|
| US7946657B2 (en) | 2006-08-11 | 2011-05-24 | Schlumberger Technology Corporation | Retention for an insert |
| US7963617B2 (en) | 2006-08-11 | 2011-06-21 | Schlumberger Technology Corporation | Degradation assembly |
| US7992945B2 (en) | 2006-08-11 | 2011-08-09 | Schlumberger Technology Corporation | Hollow pick shank |
| US7997661B2 (en) | 2006-08-11 | 2011-08-16 | Schlumberger Technology Corporation | Tapered bore in a pick |
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| US8292372B2 (en) | 2007-12-21 | 2012-10-23 | Hall David R | Retention for holder shank |
| CN105980632A (en) * | 2013-11-20 | 2016-09-28 | 第六元素公司 | Strike constructions, picks comprising same and methods for making same |
| JP2017133270A (en) * | 2016-01-29 | 2017-08-03 | 株式会社テノックス | Excavation head of excavation rod for constructing hydraulic solidification material liquid displacement column |
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| Publication number | Publication date |
|---|---|
| JP3123193B2 (en) | 2001-01-09 |
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