JPS6135716A - Digging machine - Google Patents
Digging machineInfo
- Publication number
- JPS6135716A JPS6135716A JP15685984A JP15685984A JPS6135716A JP S6135716 A JPS6135716 A JP S6135716A JP 15685984 A JP15685984 A JP 15685984A JP 15685984 A JP15685984 A JP 15685984A JP S6135716 A JPS6135716 A JP S6135716A
- Authority
- JP
- Japan
- Prior art keywords
- excavator
- soil
- groove
- cutting device
- groove cutting
- 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
Landscapes
- Harvesting Machines For Root Crops (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】 〈産業上の利用分野〉 本発明は、長芋等の長根菜類作物の掘取機に関する。[Detailed description of the invention] <Industrial application field> The present invention relates to a digging machine for long root vegetables such as Japanese yam.
〈従来の技術〉
この種掘取機に関する従来技術として、例えば、長芋等
の作物の下方に潜入させたＩＢ超し板を油圧等で上下動
させて掘取るもの（実開昭５５−１６０１２２号公報、
実開昭５６−７１１１６号公報、実開昭５７−１５４９
２８号公報）が公知であシ、また、前下りに傾斜した掘
りし板を長芋の下方、または側方を通過させることによ
り掘取るもの（実開昭５７−４５７１５号公報、実開昭
５７−１０２９３４号公報）が公知であるｎ
第１２図及び第１５図に従来の掘取機Ｑ５０）を示す。<Conventional technology> As a conventional technology related to this kind of excavator, for example, a type of excavation machine that excavates crops such as Japanese yam (Japanese Utility Model No. 55-160122 Public notice,
Utility Model Application No. 56-71116, Utility Model Application No. 57-1549
Japanese Utility Model Application Publication No. 57-45715) is well-known, and digging is carried out by passing a digging plate inclined forward downwards below or to the side of the yam (Japanese Utility Model Application Publication No. 57-45715, Japanese Utility Model Application Publication No. 57/1983). Figures 12 and 15 show a conventional excavator Q50).
この掘取機−は、トラクタ別の後部に三点リンク横溝−
ヲ介して牽引装着された機枠−を有し、機枠−の後部に
油圧シリンダＨで上下動される支柱（５四を有し、該支
柱（５四の下端に前方へ突出して前下り状となる掘起し
板１５６ｆｔ−有する＾上記掘起し仮置が長芋１５７！
の下方を通過することにより、掘起し板（５６１上方の
土が上方へ持ち上げられ、土中にある長芋岡が持ち上げ
られた土と共に掘起こされる。This excavator has a three-point link horizontal groove on the rear of the tractor.
It has a machine frame that is towed and attached through the machine frame, and has a column (54) that is moved up and down by a hydraulic cylinder H at the rear of the machine frame, and a column (54) that protrudes forward at the lower end of the column (54). It has 156 ft of excavated board to form a shape.The above excavated and temporary storage is 157 yam!
By passing under the excavation plate (561), the soil above the excavation plate (561) is lifted upward, and Nagaimooka, which is in the soil, is dug up together with the lifted soil.
掘起こされた作物は、支柱−に衝突する前に伴走してい
る作業者によって手で完全に抜き取られる。The dug-up crop is completely removed by hand by an accompanying worker before it hits the support.
〈発明が解決しようとする問題点〉
従来は、長芋・ゴボウ・人参等、土中５０〜１００ａの
深い所にある作物を掘起し板（イ）で土と共に持ち上げ
て掘取りしているが、掘起し板□□□の土切り、土の持
ち上げ力が弱く、軽しよう土等でないと十分な能力を全
油することができなかった。すなわち、第１６図に示す
如く、掘起し板（５＠上方の土を持ち上げるＫは、その
両側で大きな剪断力（τ）が作用し、砂地、粘土質では
土切れが悪く、上方に上りにくく、掘起し板ｔ５ｅ＋の
牽引力が大きくなり、大きな動力を必要とした。ｔた土
が上方に持ち上がらず圧縮されるのみでは作物の損傷が
大きくなり問題となっていた。<Problems to be solved by the invention> Conventionally, crops such as yam, burdock, and carrots, which are located 50 to 100 a deep underground, were dug up by lifting them with the soil using a digging board (a). , The lifting power of the earth cutting by the excavation board □□□ was weak, and it was not possible to fully lubricate the soil to its full capacity unless it was made of light soil. In other words, as shown in Figure 16, when the excavation plate (5@K lifts up the soil above), a large shearing force (τ) acts on both sides of the excavation plate (5), and in sandy or clay soil, the soil is difficult to cut, and the soil is lifted upward. This increased the traction force of the digging plate t5e+ and required a large amount of power.If the soil was only compressed without being lifted upwards, the damage to the crops would be large, which was a problem.
〈問題点を解決するための手段〉
本発明は、上記問題点を解決するために次の手段を講じ
た。すなわち、第１の発明のｒ！徴とする処は、進行方
向に向って下方へ傾斜した掘起し板を有し、該掘起し板
を土中にある長根菜類作物の下方を通過させることによ
り、作物を上方へ持ち上げて掘起す掘取機において、
前記掘超し板の先端部両側に溝切装置が設けられた点に
あり、第２の発明の特徴とする処は、前記掘起し板の先
端部両側に溝切装置を設け、該両側の溝切装置の内、い
ずれか一方は、他方よりも巾の広い溝を切ることができ
るものである点にあり、第６の発明の特徴とする処は、
前記掘起し板の先端部両側に溝切装置全般け、該両側の
溝切装置の内、いずれか一方は、他方よルも深い溝全切
ることができるものである点にある。<Means for Solving the Problems> The present invention takes the following measures to solve the above problems. That is, r! of the first invention! The area where the symptoms are detected has a digging plate that slopes downward in the direction of travel, and by passing the digging plate under the long root vegetable crops in the soil, the crops are lifted upward. In the excavator that excavates the excavation plate, a groove cutting device is provided on both sides of the tip of the over-excavating plate. A sixth invention is characterized in that a groove cutting device is provided, and one of the groove cutting devices on both sides is capable of cutting a groove wider than the other.
There are groove cutting devices on both sides of the tip of the digging plate, and one of the groove cutting devices on both sides is capable of completely cutting a deep groove on the other side.
〈作 用〉
本発明によれば、掘起し板先端部の両側に溝切装置が設
けられているので、掘起し板上の土の両側には剪断抵抗
が作用しない。従って、小さな動力で掘超し板上の土を
上方に持ち上げることができる。<Function> According to the present invention, since the groove cutting device is provided on both sides of the tip of the digging board, shearing resistance does not act on both sides of the soil on the digging board. Therefore, the soil on the excavation plate can be lifted upward with a small amount of power.
〈実施例〉 以下、本発明の実施例を図面に基づき詳述する。<Example> Hereinafter, embodiments of the present invention will be described in detail based on the drawings.
第１図乃至第５図に示すものは、本発明の第１突施例で
ある。同図において、（１）はトラクタ、（２）は掘取
機を示す。掘取機（２］はトラクタ（１）の後部に設け
られた三点リンク機構（３）ヲ介して、トラクタ（１）
に上下動自在に牽引装着されている。What is shown in FIGS. 1 to 5 is a first embodiment of the present invention. In the figure, (1) shows a tractor and (2) shows an excavator. The excavator (2) connects the tractor (1) via a three-point linkage (3) installed at the rear of the tractor (1).
It is attached to be towed so that it can be moved up and down.
上記掘取機（２１は、機枠（４）と、該機枠（４）の後
部に上下動自在に設けられた支柱（５１と、支柱（５）
の下端部に前方突出状に設けられ念掘旬し板（６）とｔ
有し、かつ掘起し板（６）の先端部両側に位置すべく機
枠（４）の前部に左右一対設けられた溝切装置（７）と
を有している。The excavator (21) includes a machine frame (4), a column (51) provided at the rear of the machine frame (4) so as to be movable up and down, and a column (5).
A nengori shunshi board (6) is provided in a forward protruding manner at the lower end of the t
and a pair of left and right groove cutting devices (7) provided at the front of the machine frame (4) to be located on both sides of the tip of the digging plate (6).
前記機枠（４）の前部の左右両端部に三点リンク横溝Ｔ
３）のロアーリンク（８）が着脱自在に連結されている
。機枠（４）前部の中央部には動力受入ギヤボックス（
９）が設けられ、該ギヤボックス（９）上面にトップマ
ストａＧが立設され、該トップマストσＱに三点リンク
機構（３）のトップリンクｌが連結されている。A three-point link lateral groove T is provided at both left and right ends of the front part of the machine frame (4).
3) is removably connected to the lower link (8). The power receiving gear box (
9), a top mast aG is erected on the upper surface of the gear box (9), and a top link l of a three-point link mechanism (3) is connected to the top mast σQ.
前記動力受入ギヤボックス（９）に、伝動軸ＣＬ５を介
してトラクタ（１）のＰ’Ｉ’０＠［相］から動力が伝
達される。動力受入ギヤボックス（９）からの動力は、
その左右両側に設けられた溝切装置（７） （７） Ｋ
伝達される。Power is transmitted from P'I'0@[phase] of the tractor (1) to the power receiving gear box (9) via the transmission shaft CL5. The power from the power receiving gear box (9) is
Grooving devices (7) (7) K installed on both the left and right sides
communicated.
この溝切装置（７）はヌクリューオーガから成る。This groove cutting device (7) consists of a screw auger.
すなわち、この溝切装置（７）は、機枠（４）に左右方
向の横軸回りに回動自在に枢支されたギヤボックスα４
１ヲ有する。このギヤボックス霞に前記動力受入ギヤボ
ックス（９）から動力が伝達される。このギヤボックス
（１４１からオーガ軸口が下垂しており、該オーガ＠西
に溝切スクリュａｅが突設されている。That is, this groove cutting device (7) is equipped with a gear box α4 that is rotatably supported on the machine frame (4) around a horizontal axis in the left and right direction.
I have 1. Power is transmitted to this gearbox from the power receiving gearbox (9). An auger shaft opening hangs down from this gear box (141), and a groove cutting screw ae is protruded from the west side of the auger.
この溝切スクリュαＧは土切ｖを行う機能を有しておれ
ばよく、土を上方へ排出する排出機能を必ずしも必要と
しない。従って、オーガ軸α９には耕耘爪のナタ爪の如
き爪金螺旋状に突設してもよい。This groove cutting screw αG only needs to have a function of cutting soil v, and does not necessarily need a discharge function of discharging soil upward. Therefore, the auger shaft α9 may be provided with a claw protruding in a spiral shape, such as a hatchet claw of a tiller claw.
前記ギヤボックス制は油圧シリンダαｈの伸縮動作によ
り左右方向の横軸回りに回動する。このギヤボックス（
１４１の回動によりオーガ軸叫は下垂状と水平状に位置
変更自在となる。The gearbox system rotates around a horizontal axis in the left-right direction by the expansion and contraction operation of the hydraulic cylinder αh. This gearbox (
By rotating 141, the position of the auger shaft can be freely changed between a downward position and a horizontal position.
機枠（４）の後端部に上下動自在に設けられた前記支柱
（５）は、油圧シリンダ［相］の伸縮動作で機枠（４）
に対して相対的に上下動する。この支柱（５）は掘取機
（２］の左右方向中央部に位置しており、支柱（５）の
下端は前方に向って突出するようＬ形に形成されている
。この突出部に、前方に向って下方へ傾斜する前記掘起
し板（６）が設けられている、こ°の掘起し板（６）の
先端部の両端に、前記オーガ軸口が位置している。The support column (5), which is provided at the rear end of the machine frame (4) so as to be able to move up and down, moves the machine frame (4) by the expansion and contraction operation of the hydraulic cylinder [phase].
move up and down relative to the This support (5) is located at the center in the left-right direction of the excavator (2), and the lower end of the support (5) is formed in an L shape so as to project forward. The auger shaft opening is located at both ends of the tip of the digging plate (6), which is provided with the digging plate (6) that slopes downward toward the front.
上記本発明の第１実施例によれば、第１図に示す如く、
掘取機〔２）は三点リンク機構（３）ヲ介して上下動自
在であり、かつ掘Ｑし板（６ンの土中深さは油田シリン
ダωを介して調整自在であり、更に溝切装置（７）の溝
切深さ線油田シリンダσηを介してオーガｍａｔ−傾斜
させることで調整自在となるから、これらの組合せを適
宜調整することにより、任意の深さの作業が可能となる
。According to the first embodiment of the present invention, as shown in FIG.
The excavator [2] is vertically movable via a three-point linkage mechanism (3), and the depth of the excavator plate (6) can be adjusted via an oil field cylinder ω, The groove cutting depth line of the cutting device (7) can be freely adjusted by tilting the auger mat through the oil field cylinder ση, so by appropriately adjusting these combinations, work at any depth is possible. .
次に掘取作業につき説明すれば、掘取機（２１ｋ下降さ
せ、次いで油田シリンダ□□□により支柱（５）ｋ下降
させて掘りし板（６）ｖｉ−土中に潜入させると共に、
溝切装置（７）のオーガ軸口を下垂状として土中に潜入
させつつ、トラフ・り（１）で牽引する。Next, to explain the excavation work, the excavator (21k) is lowered, and then the support (5) k is lowered by the oil field cylinder □□□, and the digging plate (6) vi- is infiltrated into the soil.
The auger shaft opening of the groove cutting device (7) is made to be downwardly shaped so that the auger shaft enters the soil and is towed by the trough rig (1).
しかして、掘起し板（６）は長芋等の長根菜作物ａ９の
下方を通過する。掘起し板（６）は、後方に行くに従い
高くなるよう傾斜しているので、掘起し板（６］上の土
は持ち上げられることになり、この持ち上げられる土と
いっしょに作物（１９も上方へ持ち上げられ、その上端
が地表に突出する。この突出した作物α９が支柱（５）
に衝突する前に、トラクタ（１）の後方を伴走している
作業者が抜き取る。Thus, the digging board (6) passes under the long root vegetable crop a9 such as Japanese yam. Since the digging board (6) is sloped so that it becomes higher toward the rear, the soil on the digging board (6) is lifted, and the crops (19) are lifted up along with this lifted soil. It is lifted upward and its upper end protrudes above the ground.This protruding crop α9 is the support (5)
A worker accompanying the tractor (1) pulls it out before it collides with the tractor (1).
上紀掘趨し板（６）による土の持ち上げに際し、第３図
に示すように、掘起し板（６）の両側の土は、溝切装置
（７）によル土切りされるので、持ち上げ抵抗が著しく
減少する。When the soil is lifted by the upper excavation plate (6), the soil on both sides of the excavation plate (6) is cut by the groove cutting device (7), as shown in Figure 3. , lifting resistance is significantly reduced.
第４図に示すものは、本発明の第２実施例であり、溝切
装置（７）としてチェンドレンチｃｉＯｉ用いたもので
ある。また機枠（４）後部の支柱（５）は、機枠（４）
に対して回動自在な支柱支持フレーム３Ｄに上下動自在
に設けられ、該支持フレーム０は、油圧シリンダ器の伸
縮動作で回動自在である。従って、この油圧シリンダ■
の伸縮動作で、掘起し板（６）は上下方向回動自在とな
る。What is shown in FIG. 4 is a second embodiment of the present invention, in which a chain wrench ciOi is used as the groove cutting device (7). Also, the rear strut (5) of the machine frame (4) is attached to the machine frame (4).
The support frame 0 is provided to be vertically movable on a pillar support frame 3D which is rotatable relative to the support frame 0, and the support frame 0 is rotatable by the expansion and contraction operation of a hydraulic cylinder device. Therefore, this hydraulic cylinder ■
With the expansion and contraction movement, the digging plate (6) becomes vertically rotatable.
その他の溝底は前６第１突施例と同じである・第５図乃
至第７図に示すもの蝶、本発明の第３実施例であり、溝
切装置（７）として土切ナイフ囚を用いたものである。The other groove bottoms are the same as those in the previous 6th first protruding embodiment.The groove bottom shown in Figs. It uses
土切ナイフｃ１３ハ機枠（４）の前部の左右両側に、上
下方向の高さ調整自在に取付けられている。The earth cutting knife c13 is attached to both left and right sides of the front part of the machine frame (4) so that the height can be adjusted in the vertical direction.
このように土切ナイフのにより掘をし板（６）両側の土
を切ることにより、土の持ち上げ全容易とすることがで
きる。By cutting the soil on both sides of the board (6) by digging with a dokiri knife in this way, it is possible to easily lift the soil.
第８図に示すものは、本発明の第４笑施例であり、溝切
装置〔７）として、左右両側の内、いずれか一方を駆動
形溝切装置とし、他方を土切ナイフのとしたものであり
、図では駆動形溝切装置（７）としてスクリューオーガ
が例示されているが、チェノ ′トレンチャであ
ってもよい。What is shown in FIG. 8 is a fourth embodiment of the present invention, in which one of the left and right sides is a drive-type groove cutting device, and the other is a soil cutting knife. In the figure, a screw auger is illustrated as an example of the driven groove cutting device (7), but a Cheno trencher may also be used.
第９図は本発明の第５実施例を示すものであジ、左右両
側の溝切装置（７）の内、いずれか一方が他方よりも巾
の広い溝を切ることができるようにしたものである。図
では溝切装置（７）としてスクリューオーガ？用い、一
方のスクリュ径ＣＤｊ） ’ｒ他方の径（Ｄρよりも大
きくしているが、これに限られるものではない。FIG. 9 shows a fifth embodiment of the present invention, in which one of the left and right groove cutting devices (7) can cut a groove wider than the other. It is. In the figure, is the screw auger used as the groove cutting device (7)? The diameter of one screw (CDj)'r is larger than the diameter of the other (Dρ), but it is not limited to this.
このように一方の溝巾を広くすることＫより、第１０図
に示す如く、掘起し板（６）上の土が、巾の広い方の溝
側に倒れるため、作物は斜めに押し出され、後方の支柱
（５）に衝突することがなくなる。従って抜き取り作業
者は常にトラクタ後方を伴走する必要がなくなる。As shown in Fig. 10, by widening one groove width, the soil on the digging board (6) falls toward the wider groove side, and the crops are pushed out diagonally. , there will be no collision with the rear pillar (5). Therefore, the extractor does not need to always follow behind the tractor.
第７１図は本発明の第６実施例であり、左右両側の溝切
装置（７）の内、一方を他方よりも土中深く潜入させた
ものである。このように溝切深さく■＋ 、焉）に差を
もたせることにより、掘起し板（６）上の土は溝の深い
方へ倒れるので、第１０図に示すのと同°じ効果が得ら
れる。FIG. 71 shows a sixth embodiment of the present invention, in which one of the left and right groove cutting devices (7) is penetrated deeper into the soil than the other. By creating a difference in the depth of trench cutting in this way, the soil on the excavation board (6) will fall towards the deeper side of the trench, resulting in the same effect as shown in Figure 10. can get.
尚、本発明は上記芙施例に限定されるものではなく、各
実施例全適宜組み合わせて得られるものであってもよい
。It should be noted that the present invention is not limited to the above embodiments, but may be obtained by appropriately combining all of the embodiments.
〈発明の効果〉
本発明によれば、溝切装置により土切りが行なわれるの
で、掘起し板の牽引抵抗が減少し、少馬力で、かつ低燃
費で作業ができる。また圃場の土質適合性が大きくなり
、掘取作業範囲が拡大される。史に土の流れがスムーヌ
になり、作物の傷み損失が少なくなる。<Effects of the Invention> According to the present invention, earth cutting is performed by a groove cutting device, so the traction resistance of the digging plate is reduced, and the work can be performed with low horsepower and low fuel consumption. In addition, the soil compatibility of the field will be improved, and the area of excavation work will be expanded. Historically, the flow of soil has become smoother, and there has been less damage and loss to crops.
また溝切装置による溝巾又は溝深さを左右で異ならしめ
ると、土の流れが斜めとなるので、抜き取り作業者を必
ずしも伴走させる必要がなくなり、１人作業が可能とな
る。Furthermore, if the groove width or depth of the groove cutter is made different on the left and right sides, the soil flows diagonally, so there is no need to accompany the extractor, and the work can be done by one person.
第１図は本発明の第１実施例を示す掘取機の側面図、第
２図は同平面図、第３図は同新面図、第４図は本発明の
第２突施例を示す掘取機の側面図、第５図は本発明の第
５実施例を示す掘取機の側面図、第６図は同平面図、第
７図は同断面図、第８゜図は本発明の第４笑施例を示す
断面図、第９図娘本発明の第５夾施例を示す断面図、第
１０図は同作用説明用の断面図、第１１図は本発明の第
６実施例を示す断面図、第１２図は従来例を示す側面図
、第１５図は同作用説明用断面図である。
（２１・・・掘取機、（６）・・・掘起し板、（７）・
・・溝切装置。FIG. 1 is a side view of an excavator showing a first embodiment of the present invention, FIG. 2 is a plan view thereof, FIG. FIG. 5 is a side view of the excavator showing a fifth embodiment of the present invention, FIG. 6 is a plan view of the same, FIG. 7 is a sectional view of the same, and FIG. FIG. 9 is a sectional view showing the fifth embodiment of the invention; FIG. 10 is a sectional view for explaining the same action; FIG. 11 is a sectional view showing the sixth embodiment of the invention. FIG. 12 is a sectional view showing the embodiment, FIG. 12 is a side view showing the conventional example, and FIG. 15 is a sectional view for explaining the same operation. (21...excavation machine, (6)...excavation board, (7)...
・Groove cutting device.
Claims (1)
該掘起し板を土中にある長根菜類作物の下方を通過させ
ることにより、作物を上方へ持ち上げて掘起す掘取機に
おいて、 前記掘起し板の先端部両側に溝切装置が設けられたこと
を特徴とする掘取機。 ２、溝切装置は駆動形溝切装置であることを特徴とする
特許請求の範囲第１項に記載の掘取機。 ３、溝切装置は土切りナイフであることを特徴とする特
許請求の範囲第１項に記載の掘取機。 ４、両側の溝切装置の内、一方は駆動形溝切装置であり
、他方は土切りナイフであることを特徴とする特許請求
の範囲第１項に記載の掘取機。 ５、駆動形溝切装置はスクリユーオーガであることを特
徴とする特許請求の範囲第２項又は第４項のいずれかに
記載の掘取機。 ６、駆動形溝切装置はチエントレンチヤであることを特
徴とする特許請求の範囲第２項又は第４項のいずれかに
記載の掘取機。 ７、進行方向に向つて下方へ傾斜した掘起し板を有し、
該掘起し板を土中にある長根菜類作物の下方を通過させ
ることにより、作物を上方へ持ち上げて掘起す掘取機に
おいて、 前記掘起し板の先端部両側に溝切装置を設け、該両側の
溝切装置の内、いずれか一方は、他方よりも巾の広い溝
を切ることができるものであることを特徴とする掘取機
。 ８、進行方向に向つて下方へ傾斜した掘起し板を有し、
該掘起し板を土中にある長根菜類作物の下方を通過させ
ることにより、作物を上方へ持ち上げて掘起す掘取機に
おいて、 前記掘起し板の先端部両側に溝切装置を設け、該両側の
溝切装置の内、いずれか一方は、他方よりも深い溝を切
ることができるものであることを特徴とする掘取機。[Claims] 1. It has a digging plate that is inclined downward in the direction of travel,
In an excavator that lifts and excavates the crop by passing the excavation plate below the long root vegetable crop in the soil, a groove cutting device is provided on both sides of the tip of the excavation plate. An excavator characterized by the fact that 2. The excavator according to claim 1, wherein the groove cutting device is a drive type groove cutting device. 3. The excavator according to claim 1, wherein the groove cutting device is a soil cutting knife. 4. The excavator according to claim 1, wherein one of the groove cutting devices on both sides is a drive type groove cutting device and the other is a cutting knife. 5. The excavator according to claim 2 or 4, wherein the driven groove cutting device is a screw auger. 6. The excavator according to claim 2 or 4, wherein the driven trench cutting device is a chain trencher. 7. It has a digging plate that slopes downward in the direction of travel,
In an excavator that lifts and excavates the crop by passing the excavation plate under the long root vegetable crop in the soil, a groove cutting device is provided on both sides of the tip of the excavation plate. An excavator, characterized in that one of the groove cutting devices on both sides is capable of cutting a groove wider than the other. 8. It has a digging plate that slopes downward in the direction of travel,
In an excavator that lifts and excavates the crop by passing the excavation plate under the long root vegetable crop in the soil, a groove cutting device is provided on both sides of the tip of the excavation plate. An excavator, characterized in that one of the groove cutting devices on both sides is capable of cutting a deeper groove than the other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15685984A JPS6135716A (en) | 1984-07-26 | 1984-07-26 | Digging machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15685984A JPS6135716A (en) | 1984-07-26 | 1984-07-26 | Digging machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6135716A true JPS6135716A (en) | 1986-02-20 |
Family
ID=15636940
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15685984A Pending JPS6135716A (en) | 1984-07-26 | 1984-07-26 | Digging machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6135716A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6324961B1 (en) | 1999-02-22 | 2001-12-04 | Honda Giken Kogyo Kabushiki Kaisha | Oil passage arrangement in a piston |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5618020B2 (en) * | 1972-11-24 | 1981-04-25 |
-
1984
- 1984-07-26 JP JP15685984A patent/JPS6135716A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5618020B2 (en) * | 1972-11-24 | 1981-04-25 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6324961B1 (en) | 1999-02-22 | 2001-12-04 | Honda Giken Kogyo Kabushiki Kaisha | Oil passage arrangement in a piston |
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