JP2965941B2 - Auger for excavators - Google Patents
Auger for excavatorsInfo
- Publication number
- JP2965941B2 JP2965941B2 JP20849797A JP20849797A JP2965941B2 JP 2965941 B2 JP2965941 B2 JP 2965941B2 JP 20849797 A JP20849797 A JP 20849797A JP 20849797 A JP20849797 A JP 20849797A JP 2965941 B2 JP2965941 B2 JP 2965941B2
- Authority
- JP
- Japan
- Prior art keywords
- auger
- hole
- earth
- sand
- blade
- 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 - Fee Related
Links
Landscapes
- Earth Drilling (AREA)
Description
【0001】[0001]
【発明の属する技術分野】本発明は、地面に穴を掘るた
め回転軸周りに回転可能に設けた回転羽根を有する穴掘
り機用オーガーに関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an auger for a digging machine having rotating blades rotatably provided around a rotation axis for digging a hole in the ground.
【0002】[0002]
【従来の技術】穴掘り機には、実開昭63−48405
号の第4図に従来例として示された、エンジン駆動のオ
ーガーを備えた手持ち式のものがある。このハンドオー
ガーというべき穴掘り機では1穴/30秒が作業量の標
準であり、労働条件の厳しさから1日当たり500穴が
限界であった。そのため上記考案や実開平2−5730
6号、特開平7−107813号等の発明、考案が開発
された。しかしそれらは出願されてはいるが、製品とし
て具体化されたものはない。そこで本発明者は自動穴掘
り機が実用化できない原因を追求し、試行錯誤を繰り返
して自走式の穴掘り機を完成した。その結果を公開すべ
く既に出願もしている。本発明はこの開発の過程で創作
されたものである。2. Description of the Related Art Drilling machines are disclosed in Japanese Utility Model Laid-Open No. 63-48405.
FIG. 4 shows a conventional hand-held type equipped with an engine-driven auger. In this excavator which should be called a hand auger, 1 hole / 30 seconds is the standard of work volume, and the limit of 500 holes per day was severe due to severe working conditions. For this reason, the above-mentioned invention and the practice of Japanese Utility Model Application No.
6, inventions and devices such as JP-A-7-107813 have been developed. However, although they have been filed, none is embodied as a product. Therefore, the present inventor pursued the cause of the inability of the automatic drilling machine to be put into practical use, and completed a self-propelled drilling machine by repeating trial and error. We have already filed an application to disclose the results. The present invention was created in the course of this development.
【0003】従来の穴掘り機に使用されたオーガーと、
それにより掘削した穴hは、図11〜13に示すように
回転軸rとの直交線lよりやや後退方向へ角度θ′傾斜
した底iを有するものである。ところが掘削作業によっ
て掘り取られた土砂jは穴kの縁に堆積し、この土砂j
はオーガーkを穴から引き上げると穴内に落下し、底i
の外周に堆積する。その結果、底の平面度が失われるの
で、土砂を手ですくい出すか、或いは予め必要以上に深
い穴を掘り、後に外周に落下した土砂を平らにならさな
ければならない、という問題を生じた。最近、小型樹を
ポットにより育成する方法が行なわれており、根巻きの
必要がない利点を有する。しかし穴の底に上記のように
土砂jが堆積するとポットの角がつぶれ、好ましくな
い。[0003] Augers used in conventional diggers ,
The hole h excavated thereby has a bottom i that is inclined at an angle θ ′ in the retreating direction slightly from the orthogonal line l to the rotation axis r as shown in FIGS. However, the sediment j excavated by the excavation work is deposited on the edge of the hole k, and the sediment j
Pulls the auger k out of the hole and falls into the hole, the bottom i
Accumulates on the outer periphery of. As a result, the flatness of the bottom is lost, and the problem has arisen that the earth and sand must be scooped out by hand, or a hole deeper than necessary must be dug in advance, and the earth and sand that has fallen to the outer periphery must be flattened later. . Recently, a method of growing a small tree in a pot has been performed, which has an advantage of not requiring root winding. However, if the soil j accumulates at the bottom of the hole as described above, the corner of the pot is crushed, which is not preferable.
【0004】[0004]
【発明が解決しようとする課題】本発明は前記の経緯に
より、また上記の事情に基づいてなされたものであり、
その課題は、掘削した穴の底の平面度を良好に保ち、土
をならすなどの作業を不用にすることである。SUMMARY OF THE INVENTION The present invention has been made based on the above-mentioned circumstances and based on the above-mentioned circumstances.
The problem is to keep the flatness of the bottom of the excavated hole good and to eliminate the work of leveling the soil.
【0005】また本発明は所定の形状の穴を土の状況に
拘ず効率よく掘削すること及びポットの角をつぶさない
ことを目的とする。It is another object of the present invention to efficiently excavate a hole having a predetermined shape irrespective of the condition of the soil and not to crush the corner of the pot.
【0006】[0006]
【課題を解決するための手段】前記課題を解決するため
本発明は、中心部より外周部の方が深い断面形状の底を
有する穴を掘削するためのオーガーとして、オーガーは
螺旋形の回転羽根を回転軸体に取り付けた構造を有し、
中心部より掘削方向へ突出した外周部を有する刃先部を
回転羽根の先端部に設けるという手段を講じたものであ
る。[Summary of the order to solve the above problems the present invention, as auger for drilling a hole having a bottom of a deep cross section towards the outer peripheral portion than the central portion, the auger
Having a structure in which a spiral-shaped rotating blade is attached to a rotating shaft body,
A means is provided in which a cutting edge having an outer peripheral portion protruding from the center in the excavation direction is provided at the tip of the rotary blade.
【0007】[0007]
【発明の実施の形態】本発明に係る自走式穴掘り機は、
植物を植え付けるために、圃場Fに必要な深さの穴Hを
掘るための装置である。ここでいう圃場Fとは耕耘され
たものも耕耘されていないものも含む。DESCRIPTION OF THE PREFERRED EMBODIMENTS A self-propelled excavator according to the present invention
This is a device for digging a hole H having a necessary depth in a field F in order to plant a plant. The field F mentioned here includes those that have been plowed and those that have not been plowed.
【0008】推進手段としては、耕耘された圃場Fを確
実に移動することができる必要があるので、本発明にお
いては無限軌道11が不可欠である。無限軌道11は、
クローラーであるとか、キャタピラと通称されるもので
あり、本体10の左右に夫々設けられた駆動輪18と従
動輪19間に履帯をかけ渡した構造を有する。無限軌道
11の動力には、例えば内燃エンジンなどの原動機12
が本体10に搭載される。本体10には油圧装置13も
搭載される。油圧を発生させるための動力源は独立に設
けたり、また外部から供給しても良いが、推進手段の原
動機12の動力を使用することも可能である。[0008] As the propulsion means, it is necessary to be able to reliably move the cultivated field F, so the endless track 11 is indispensable in the present invention. Endless track 11 is
It is a crawler or a caterpillar, and has a structure in which a crawler belt extends between a driving wheel 18 and a driven wheel 19 provided on the left and right of the main body 10, respectively. The power of the endless track 11 includes a prime mover 12 such as an internal combustion engine.
Is mounted on the main body 10. A hydraulic device 13 is also mounted on the main body 10. A power source for generating hydraulic pressure may be provided independently or supplied from the outside, but it is also possible to use the power of the prime mover 12 of the propulsion means.
【0009】図示の実施例の場合、原動機12には大出
力のガソリンエンジンを使用し、出力を走行系と油圧装
置の動力源に利用している。走行系の動力源は上記駆動
輪への動力接・断用の走行クラッチを介して変速機へ入
力される。他方、油圧系の動力のために原動機12は油
圧ポンプを駆動する。In the illustrated embodiment, a high-output gasoline engine is used for the prime mover 12, and the output is used for a driving system and a power source of a hydraulic device. The power source of the traveling system is input to the transmission via a traveling clutch for connecting / disconnecting power to / from the driving wheels. On the other hand, the prime mover 12 drives a hydraulic pump for the power of the hydraulic system.
【0010】本発明の穴堀り機では従来の穴掘り機にお
ける土砂残留の問題が解決されている。前記した半人力
用の動力穴掘り機(いわゆるハンドオーガー)の場合、
これをそのまま使用したのでは十分に掘削できず、掘り
くずした土砂を持ち上げて外に出すための取り扱いを経
験で体得する必要があった。このような操作ができない
動力穴掘り機では掘った穴の中に半分以上の土砂が残留
してしまい、その後のかき出しが大変なため、実用にな
らなかったという事情がある。この原因を追求した結
果、従来機ではオーガーの回転にも拘らず土砂が十分に
上がってこず、すき間から落下することが判明した。そ
こで本発明では原動機12を大出力のものとして、オー
ガー17の回転速度を従来の100〜150rpmから
倍速の250〜300rpmに高め、オーガー17の跳
ね飛ばす土砂及び高速回転するオーガー17から作業者
を保護するため作業者を本体床板28上に搭乗させ、か
つ間に枠体などの構造物を配置して跳ね飛ばされる土砂
からの遮蔽体29とした。これらの対策を講じた結果、
オーガー自体の構造は変えることなく回転速度及びトル
クの増大により掘削した土砂を上昇させ穴の外へほぼ完
全に放出することが可能になった。即ち、土質による差
はあるが、後工程に何ら問題のない程度となった。な
お、オーガー17は土砂を掘削したあと跳ね飛ばすこと
を目的とするので、高速回転とはこの目的を達する回転
速度を意味する。従って上記回転速度は飽くまで例示で
あり、穴の深浅や土砂の軽重、或いはオーガー17の回
転トルクの大小に応じて上記回転速度の範囲外に変更し
得る。The drilling machine according to the present invention solves the problem of sediment remaining in a conventional drilling machine. In the case of the aforementioned power drilling machine for semi-human power (so-called hand auger),
If this was used as it was, it would not be possible to excavate enough, and it was necessary to gain experience through handling the excavated earth and sand to lift it out. In a power digging machine that cannot perform such operations, more than half of the earth and sand remains in the digged hole, and the subsequent excavation is difficult. As a result of pursuing this cause, it was found that the earth and sand did not sufficiently rise in the conventional machine despite the rotation of the auger, and fell from the gap. Therefore, in the present invention, the rotation speed of the auger 17 is increased from the conventional 100 to 150 rpm to 250 to 300 rpm by using the prime mover 12 having a large output to protect the worker from the earth and sand that the auger 17 bounces off and the auger 17 that rotates at a high speed. For this purpose, a worker is mounted on the main body floor plate 28, and a structure such as a frame is arranged therebetween to form a shield 29 from the earth and sand that is splashed off. As a result of taking these measures,
The structure of the auger itself was able to raise the excavated earth and sand almost completely out of the hole by increasing the rotation speed and the torque without changing the structure. That is, although there was a difference depending on the soil properties, there was no problem in the post-process. In addition, since the auger 17 aims at bouncing off earth and sand after excavation, high-speed rotation means a rotation speed that achieves this purpose. Therefore, the above-mentioned rotation speed is an example to the extent of getting tired, and can be changed to a value outside the above-mentioned range according to the depth of the hole, the weight of earth and sand, or the magnitude of the rotation torque of the auger 17.
【0011】このようなオーガー17について、本発明
では、中心部より外周部の方が深い断面形状の底を有す
る穴Hを掘削するために、中心部より外周部の方が掘削
方向へ突出した刃先部21を回転羽根20の先端部に設
けている。例示のオーガー17は螺旋形の回転羽根20
を回転軸体22に取り付けた構造を有し、回転軸Rに直
交した線Lよりも角度θだけ傾斜した刃先部21を持つ
ように前縁部を加工している。例示の刃先部21は中心
部よりに平坦部を有してその外周のみ角度θだけ傾斜し
た形状を有するのでこのオーガー17によって掘削され
た穴Hの底Iは外周部にほぼV字型の溝Mが形成され
る。この溝Mは穴Hの縁から内部へ落下すると考えられ
る量の土砂Jを吸収して底Iを平坦に保つ。前進方向へ
傾斜した刃先部21の形状は例示のものに限られない。According to the present invention, the outer peripheral portion of the auger 17 protrudes in the direction of excavation from the central portion in order to excavate a hole H having a bottom having a sectional shape deeper in the outer peripheral portion than in the central portion. The blade tip 21 is provided at the tip of the rotary blade 20. The illustrated auger 17 has a spiral rotating blade 20.
Is attached to the rotating shaft body 22, and the front edge is machined so as to have the cutting edge 21 inclined by an angle θ with respect to a line L perpendicular to the rotating axis R. Since the illustrated cutting edge portion 21 has a flat portion from the center portion and has a shape in which only the outer periphery is inclined by the angle θ, the bottom I of the hole H excavated by the auger 17 has a substantially V-shaped groove in the outer peripheral portion. M is formed. The groove M absorbs an amount of earth and sand J which is considered to fall into the inside from the edge of the hole H, and keeps the bottom I flat. The shape of the cutting edge 21 inclined in the forward direction is not limited to the example.
【0012】刃先部21の構造について説明を補足す
る。図7(a)(b)は、回転軸Rから半径方向へのび
る線Lよりも途中から回転方向前方へ前進した傾斜状の
刃先部21を有する例である。図7(c)(d)は、半
径方向へのびる線Lよりも回転方向後方へ後退した傾斜
状の刃先部21を有する例であり、刃先部21は回転方
向さらに後方の折線L′にて下向きに曲げられる。A supplementary description of the structure of the cutting edge 21 will be given. FIGS. 7A and 7B show an example having an inclined cutting edge portion 21 that has advanced forward in the rotation direction from the middle of a line L extending from the rotation axis R in the radial direction. FIGS. 7 (c) and 7 (d) show an example having an inclined cutting edge portion 21 which recedes rearward in the rotation direction from a line L extending in the radial direction, and the cutting edge portion 21 is at a folding line L 'further rearward in the rotation direction. Bent downward.
【0013】また本発明においては土砂に対するオーガ
ー17の摩擦力を軽減する工夫が払われている。螺旋形
の回転羽根20によって穴を掘るときには遠心力で土砂
が外方へ移動し、そこで土砂と回転羽根とがすべりなが
ら掘削が進行する。ここに発生する摩擦力は回転羽根2
0の回転の大きな負担となり、土砂が湿っている場合に
は特に顕著である。この点を解決するため本発明ではオ
ーガー17の上面、つまり掘削時に土砂が滑る面23
に、進行方向に対して楔形状に形成した突起24を設け
る。図8〜図10参照。Further, in the present invention, measures are taken to reduce the frictional force of the auger 17 against earth and sand. When digging a hole with the spiral-shaped rotary blade 20, earth and sand move outward by centrifugal force, and excavation proceeds while the earth and sand and the rotary blade slide. The frictional force generated here is the rotating blade 2
Zero rotation imposes a heavy burden, and is particularly noticeable when the soil is wet. In order to solve this problem, in the present invention, the upper surface of the auger 17, that is, the surface 23 on which earth and sand slide during excavation is used.
Is provided with a projection 24 formed in a wedge shape with respect to the traveling direction. See FIGS.
【0014】例示の突起24は回転羽根20の外周に設
けてあり、回転方向へ複数箇所、等間隔に配置されてい
る。突起24はその斜面25に当たった土砂を跳ね上げ
て散らし、図10のPの範囲で摩擦力を軽減させ、かつ
穴Hの内壁面Nと土砂が滑る面23との間の土砂の量を
減少させ、同様に摩擦力を軽減させる。突起24は別製
の楔形部材を回転羽根20に溶接等により取り付けるほ
か、羽根自体のプレス加工等によっても形成することが
できる。The illustrated projections 24 are provided on the outer periphery of the rotary blade 20 and are arranged at a plurality of positions in the rotation direction at equal intervals. The projection 24 jumps up and scatters the earth and sand that has hit the slope 25, reduces the frictional force in the range of P in FIG. 10, and reduces the amount of earth and sand between the inner wall surface N of the hole H and the surface 23 on which the earth and sand slides. Decrease, and also reduce the frictional force. The projection 24 can be formed by attaching a separate wedge-shaped member to the rotary blade 20 by welding or the like, or by pressing the blade itself.
【0015】図において30は作業者が座る運転座席、
31は操作盤部であり、走行クラッチ操作部32と変速
機操作レバー33、サイドクラッチ34及びメインスロ
ットルレバー35を含む走行系と、油圧ポンプのオンオ
フ用スイッチ兼用のスロットル36、及びクラッチ3
7、オーガー昇降のための油圧シリンダの操作レバー3
8等を有する。39は後述する方向維持装置の昇降レバ
ー、40はカウンター、41はそのリセットボタンであ
り、推進手段による本機の移動距離Sを測定する。この
距離Sは前後の穴の間隔の決定に必要であり、例えば走
行系の回転軸の回転数を演算することから実距離を算出
し、かつ設定値毎に音や光を表示する。In the figure, reference numeral 30 denotes a driver's seat on which an operator sits,
Reference numeral 31 denotes an operation panel, which includes a traveling system including a traveling clutch operation section 32, a transmission operation lever 33, a side clutch 34 and a main throttle lever 35, a throttle 36 also serving as a hydraulic pump on / off switch, and a clutch 3
7. Hydraulic cylinder operating lever 3 for raising and lowering the auger
8 and so on. Reference numeral 39 denotes an elevating / lowering lever of a direction maintaining device to be described later, reference numeral 40 denotes a counter, and reference numeral 41 denotes a reset button for measuring a moving distance S of the machine by the propulsion means. The distance S is necessary for determining the distance between the front and rear holes. For example, the actual distance is calculated by calculating the number of rotations of the rotating shaft of the traveling system, and a sound or light is displayed for each set value.
【0016】掘削及び土砂排出を行なうオーガー17
は、左右の枠体15、15に夫々取り付けられた油圧回
転機16によって駆動され、穴を掘るために回転する、
と同時に昇降可能に構成される。オーガー用の油圧回転
機16の取り付けのため、枠体42を本体10の一端
部、図例では後端部に設置する。同枠体42は上下方向
のガイドレール43と、同ガイドレール43に沿って上
下動可能に設けられた上下動枠44とを有している。上
下動枠44の左右に枠体15が夫々設けられているの
で、枠体42に据え付けられた昇降用シリンダ装置14
の作動によりピストン45が伸縮し、ピストン先端を接
続した上下動枠44とともに左右の枠体15も昇降す
る。昇降量、特に下限及び上限などはリミットスイッチ
その他の検出手段によって検出し、穴の深さを一定に管
理することができる。これは自動制御も可能である。Auger 17 for excavating and discharging earth and sand
Are driven by hydraulic rotating machines 16 attached to the left and right frames 15, 15 respectively, and rotate to dig holes.
At the same time, it can be moved up and down. In order to mount the auger hydraulic rotary machine 16, the frame body 42 is installed at one end of the main body 10, in the illustrated example, at the rear end. The frame body 42 has a vertical guide rail 43 and a vertical moving frame 44 provided to be vertically movable along the guide rail 43. Since the frames 15 are provided on the left and right sides of the vertical moving frame 44, respectively, the lifting and lowering cylinder device 14 mounted on the frame 42 is provided.
, The piston 45 expands and contracts, and the left and right frames 15 move up and down together with the vertical moving frame 44 to which the piston tip is connected. The amount of ascending and descending, particularly the lower limit and the upper limit, is detected by a limit switch or other detecting means, and the depth of the hole can be controlled to be constant. This can also be controlled automatically.
【0017】左右の枠体15の間隔を調節可能とするた
めに、上下動枠44の左右方向に突出する幅調整用ガイ
ドレール46を設け、左右の枠体15を同方向へ移動可
能に支持する。またガイドレール46と平行に捩子47
を回転可能に取り付け、そのねじ部と螺合するナット部
47′を左右の枠体15に設け、ハンドル48の操作に
よって左右枠体15の位置を調整する。中央には第3の
枠体15′を設けることができる。これは上下動枠44
に直かに取り付けられる。各枠体15、15、15′に
は回転軸を垂直方向にして油圧回転機16、16、1
6′を設置し、各回転機16、16、16′にはオーガ
ー17を夫々着脱可能に取り付ける。なお、中央の油圧
回転機16′は左右いずれかの油圧回転機16を移設す
ることで済ませることができるが、専用機を設けてお
き、オーガーのみ着脱しても良い。In order to adjust the distance between the left and right frame members 15, a width adjusting guide rail 46 projecting in the left and right direction of the vertical moving frame 44 is provided, and the left and right frame members 15 are movably supported in the same direction. I do. A screw 47 is provided in parallel with the guide rail 46.
Are rotatably mounted, and nut portions 47 ′ for screwing with the screw portions are provided on the left and right frames 15, and the positions of the left and right frames 15 are adjusted by operating the handle 48. A third frame 15 'can be provided at the center. This is the vertical movement frame 44
Can be attached directly to Hydraulic rotating machines 16, 16, 1, with rotating shafts in the vertical direction, are mounted on the frames 15, 15, 15 ′.
6 'is installed, and an auger 17 is detachably attached to each of the rotating machines 16, 16, 16'. The center hydraulic rotating machine 16 'can be completed by relocating either the left or right hydraulic rotating machine 16, but a dedicated machine may be provided and only the auger may be attached and detached.
【0018】本体10の後端には、2組のオーガー17
が本体前後方向と直交する、左右方向に並列する。その
左右いずれか側方に測標18を取り付けることができ
る。測標18は、既設の穴または穴位置を示す目印に自
機の位置、つまりオーガー17による穴掘り位置を合わ
せるためのものであるから、オーガー17の回転軸を結
んだ線の外方延長上へ枠体42から延びる伸縮可能な延
出杆49と、その先端に測標18を設けた縦杆19とを
設けて構成する。縦杆19は上下動可能とすることがで
きる。At the rear end of the main body 10, two sets of augers 17 are provided.
Are arranged side by side in the left-right direction, which is orthogonal to the front-back direction of the main body. The target 18 can be attached to either the left or right side. The survey mark 18 is for adjusting the position of its own machine, that is, the digging position of the auger 17 with the mark indicating the existing hole or the hole position, so that it is located on the outward extension of the line connecting the rotation axis of the auger 17. An extendable extension rod 49 extending from the helical frame 42 and a vertical rod 19 provided with a mark 18 at its tip are provided. The vertical rod 19 can be movable up and down.
【0019】さらに、本体10の移動方向を一定に保つ
方向維持装置50を本体10に併設することができる。
これは一種の操向装置であり、図示の例は特に、耕され
た圃場で直進性を得るためのものである。同装置50
は、圃場Fの土砂に切り込むように接する細長いブレー
ド51と、ブレード51を上下動可能に支持する支持筒
52、ブレード51を圃場Fの土砂に加圧するばね5
3、及び不使用時にブレード51を引き上げておき、使
用時に下降させるためのシリンダ装置54とを有してい
る。このほか、穴掘り時に放出される土砂が既設の穴を
埋めないように、穴を囲むか覆うための土砂流れ込み防
止機構55や、或いは傾斜地に鉛直な穴を掘るため、オ
ーガーを傾斜させるための傾斜装置等を設けることも可
能である。Further, a direction maintaining device 50 for keeping the moving direction of the main body 10 constant can be provided in the main body 10.
This is a kind of steering device, and the example shown is particularly for obtaining straightness in a cultivated field. The device 50
Is a long and narrow blade 51 that is cut into the soil of the field F, a support cylinder 52 that supports the blade 51 so as to be able to move up and down, and a spring 5 that presses the blade 51 against the soil of the field F.
3, and a cylinder device 54 for raising the blade 51 when not in use and lowering the blade 51 when in use. In addition, a sediment inflow prevention mechanism 55 for surrounding or covering the hole so as not to fill the existing hole with earth and sand released at the time of digging, or for digging a vertical hole on a sloping ground and tilting the auger. It is also possible to provide a tilting device or the like.
【0020】このような構成を有する本発明の装置にお
いて、圃場Fに穴掘りを実施するとオーガー17によっ
て掘削された穴Hは中心部よりも外周部の方が深い断面
形状の底Iを持った穴となる。図5。故に、一旦掘り上
げた土砂がくずれ落ちても溝Mが埋まるだけで、底面全
体としてはほぼ平坦となり、ポット栽培の樹木を植えて
も、ポット底部の角をつぶすことはない。また穴Hの掘
削中、土砂は突起24によって跳ねとばされるので、回
転羽根20にかかる摩擦力が著しく軽減されることとな
る。In the apparatus of the present invention having such a configuration, when a hole is dug in the field F, the hole H drilled by the auger 17 has a bottom I having a deeper cross-sectional shape at the outer peripheral portion than at the central portion. It becomes a hole. FIG. Therefore, even if the earth and sand once dug out fall, only the groove M is filled, the entire bottom surface is almost flat, and even if a pot-grown tree is planted, the corner of the bottom of the pot is not crushed. Further, during excavation of the hole H, the earth and sand is rebounded by the projection 24, so that the frictional force applied to the rotary blade 20 is significantly reduced.
【0021】[0021]
【発明の効果】本発明は以上の如く構成されかつ作用す
るものであるから、掘削された穴の底の平面性が良好に
保たれ、事後、土をならす必要がないという効果があ
り、回転羽根に突起を設けた場合には摩擦力が著しく軽
減され、従って動力を一定とすれば突起を設けない場合
に比較して掘削能力が飛躍的に向上し、逆に一定径の穴
を掘る場合は突起を設けたことによって、より小さい動
力で足りるという効果を奏する。Since the present invention is constructed and operates as described above, the flatness of the bottom of the excavated hole is maintained well, and it is not necessary to level the soil afterwards. When a projection is provided on the blade, the frictional force is significantly reduced, so if the power is constant, the excavating ability will be dramatically improved compared to the case without the projection, and conversely if a hole with a constant diameter is dug With the provision of the projections, the effect of requiring less power is achieved.
【図1】本発明の対象である穴掘り機の1実施例を示す
後面図。FIG. 1 is a rear view showing an embodiment of a digging machine according to the present invention.
【図2】同上の側面図。FIG. 2 is a side view of the same.
【図3】同上の平面図。FIG. 3 is a plan view of the above.
【図4】本発明に係るオーガーの1例の要部を示す側面
図。FIG. 4 is a side view showing a main part of an example of an auger according to the present invention.
【図5】同上オーガーによって掘った穴の断面図。FIG. 5 is a sectional view of a hole dug by the auger.
【図6】土砂で溝が埋まった穴の断面図。FIG. 6 is a sectional view of a hole in which a groove is filled with earth and sand.
【図7】(a)刃先部の1例を示す側面図。 (b)図(a)の断面説明図。 (c)刃先部の他例を示す側面図。 (d)図(c)の断面説明図。FIG. 7A is a side view showing an example of a blade edge portion. (B) Sectional explanatory drawing of figure (a). (C) A side view showing another example of the cutting edge. (D) Sectional explanatory drawing of figure (c).
【図8】本発明に係るオーガーの他の例の要部を示す側
面図。FIG. 8 is a side view showing a main part of another example of the auger according to the present invention.
【図9】回転羽根の平面図。FIG. 9 is a plan view of a rotating blade.
【図10】同上の作用説明図。FIG. 10 is an operation explanatory view of the above.
【図11】従来のオーガーの要部を示す側面図。FIG. 11 is a side view showing a main part of a conventional auger.
【図12】従来のオーガーで掘った穴の断面図。FIG. 12 is a sectional view of a hole dug by a conventional auger.
【図13】土砂で埋まった穴の断面図。FIG. 13 is a sectional view of a hole filled with earth and sand.
Claims (3)
能に設けた回転羽根を有する穴掘り機用オーガーであっ
て、オーガーは螺旋形の回転羽根を回転軸体に取り付け
た構造を有し、中心部より外周部の方が深い断面形状の
底を有する穴を掘削するために、中心部より掘削方向へ
突出した外周部を有する刃先部を回転羽根の先端部に設
けたことを特徴とする穴掘り機用オーガー。An auger for a digging machine having rotating blades rotatably provided around a rotation axis for digging a hole in the ground, wherein the auger has a helical rotating blade attached to a rotating shaft body.
In order to excavate a hole having a cross-sectional bottom whose outer peripheral part is deeper than the central part, a cutting edge having an outer peripheral part protruding in the excavation direction from the central part is provided at the tip of the rotary blade. An auger for a digging machine.
度θだけ傾斜した刃先部を持ち、かつ刃先部は回転軸か
ら直径方向へのびる線よりも、回転方向前方又は後方へ
傾斜状となるように前縁部を加工した構造を有する請求
項1記載の穴掘り機用オーガー。2. A rotary vane Chi lifting the cutting edge which is inclined by an angle θ than perpendicular to the rotational axis line, and the cutting edge portion or the rotating shaft
Forward or backward in the rotational direction beyond the line extending in the diameter direction
The auger for a digging machine according to claim 1, wherein the auger has a structure in which a front edge portion is processed so as to be inclined .
羽根の上面に土砂を跳ね上げて摩擦を軽減する楔形状の
突起を設けた請求項1又は2記載の穴掘り機用オーガ
ー。3. Rotation in which earth and sand slide when excavating with an auger
Claim 1 or 2 digging machine auger according to projections of the wedge-shaped to reduce friction flipped up earth and sand is provided on the upper surface of the blade.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP20849797A JP2965941B2 (en) | 1997-07-17 | 1997-07-17 | Auger for excavators |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP20849797A JP2965941B2 (en) | 1997-07-17 | 1997-07-17 | Auger for excavators |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH1132598A JPH1132598A (en) | 1999-02-09 |
JP2965941B2 true JP2965941B2 (en) | 1999-10-18 |
Family
ID=16557146
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP20849797A Expired - Fee Related JP2965941B2 (en) | 1997-07-17 | 1997-07-17 | Auger for excavators |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2965941B2 (en) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009195153A (en) * | 2008-02-21 | 2009-09-03 | Marusan Sangyo Kk | Drilling implement for fix-planting seedling such as strawberry |
KR102634296B1 (en) * | 2015-10-20 | 2024-02-06 | 김성현 | boring apparatus for pile frame |
CN110447344B (en) * | 2019-07-10 | 2023-03-24 | 广西职业技术学院 | Landscaping planting construction process |
CN113545247B (en) * | 2021-07-19 | 2024-04-30 | 南京徊简信息科技有限公司 | High-yield cultivation method for gold honey Li Chongzhi for avoiding soil hardening |
JP7073028B1 (en) * | 2021-10-27 | 2022-05-23 | 株式会社エスエスティー協会 | Ground restoration auger and ground restoration method |
CN114503809A (en) * | 2022-01-13 | 2022-05-17 | 沧州智语达建筑装饰工程有限公司 | Automatic digging equipment for tree planting in landscaping engineering construction |
-
1997
- 1997-07-17 JP JP20849797A patent/JP2965941B2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
JPH1132598A (en) | 1999-02-09 |
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