JP2006025601A - Chinese yam digger - Google Patents

Chinese yam digger Download PDF

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JP2006025601A
JP2006025601A JP2004204098A JP2004204098A JP2006025601A JP 2006025601 A JP2006025601 A JP 2006025601A JP 2004204098 A JP2004204098 A JP 2004204098A JP 2004204098 A JP2004204098 A JP 2004204098A JP 2006025601 A JP2006025601 A JP 2006025601A
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digging
blade body
long
blade
pair
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JP4656881B2 (en
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Tsutomu Tomabechi
力 苫米地
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Tomabechi Giken Kogyo KK
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a Chinese yam digger which can reduce resistance from soil, when trailed with a tractor. <P>SOLUTION: This Chinese yam digger having a pair of plows for digging up cultivation soil on both the sides of Chinese yam with the advance of a tractor, and further having a digging blade which is rotatably connected to the lower portions of a pair of the plow members, whose front portion is formed in a blade shape and whose rear portion is inclined is characterized by connecting the digging blade to the plow member through a pair of connection bars, attaching one end of each connection bar to the lower end of each plow member, rotatably mounting the other end of each connection bar on a spindle disposed on the back side of the digging blade, and disposing the connection bars so that the connection bars are perfectly hidden with the back side of the digging blade. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

本発明は、トラクタに連結されて牽引され、１対の鋤部材で長いもの両側部の栽培土を掘り起こすと共に、後部が上方へ傾斜した掘り取り刃体によって、長いもを損傷させることなく迅速にかつスムーズに掘り取ることができる、長いもの掘取り装置の改良に関するものである。   The present invention is connected to a tractor and pulled, and a pair of ridge members dig up the long cultivated soil on both sides, and the digging blade body whose rear portion is inclined upward can quickly and without damaging the long one. The present invention relates to an improvement of a long digging apparatus that can dig up smoothly.

長いもの掘取り装置は従来種々提案されているが、後部が上方へ傾斜した掘取り刃体によって長いもを保護・保持した栽培土ブロックを順次上方へ浮上させるものにあっては、掘取り刃体の上面と栽培土ブロックの下面との摩擦力に抗するトラクタのけん引力を要する。このため、図５に示すように、掘取り刃体１０は栽培土中を掘り起こして進む前部の刃部１１と、刃部１１に接続されて回転自在になっている後部の無端ベルトコンベア１２とで構成され、無端ベルトコンベア１２の上面と栽培土ブロックの下面との摩擦力により誘発される無端ベルトコンベア１２の自転によって、栽培土ブロックを後方へ移動させると共に、刃部１１及び無端ベルトコンベア１２の接続部の支軸１３を支点として、掘取り刃体１０後方部の無端ベルトコンベア１２を図示Ａのように支持バー１４を上下させることにより円弧運動（揺動）させるものが提案されている（例えば特許文献１参照）。   Various long digging devices have been proposed in the past, but for digging blades that have their cultivated soil blocks that have been protected and retained long by a digging blade whose rear part is inclined upwards, The tractor's traction force resists the frictional force between the upper surface of the soil and the lower surface of the cultivated soil block. For this reason, as shown in FIG. 5, the digging blade body 10 digs up the cultivation soil and advances the front blade portion 11 and the rear endless belt conveyor 12 connected to the blade portion 11 and rotatable. The rotation of the endless belt conveyor 12 induced by the frictional force between the upper surface of the endless belt conveyor 12 and the lower surface of the cultivated soil block causes the cultivated soil block to move rearward, and the blade portion 11 and the endless belt conveyor. With the support shaft 13 of the connecting portion 12 as a fulcrum, an endless belt conveyor 12 at the rear of the digging blade body 10 is moved in a circular motion (oscillated) by moving the support bar 14 up and down as shown in FIG. (For example, refer to Patent Document 1).

また、図６に示すように、前記掘り取り刃体１０が無端ベルトコンベアではなく、表面に摩擦抵抗の少ない部材が敷設された平板で構成されたものも使用されている。
しかしながら、上述のような構造の長いもの掘取り装置には以下のような問題点があった。すなわち、前記長いも掘取り装置を牽引するトラクタが、作業中に栽培土から受ける抵抗は大きく分けると二つある。一つは１対の鋤部材１５が長いもの両側部の栽培土を切る際に受ける抵抗、他は掘取り刃体１０が栽培土を掘り起こす際に受ける抵抗である。 Moreover, as shown in FIG. 6, the digging blade body 10 is not an endless belt conveyor, but a plate made of a flat plate having a surface with a low frictional resistance is used.
However, the digging apparatus having a long structure as described above has the following problems. That is, the resistance that the tractor that pulls the long digging device receives from the cultivated soil during work can be roughly divided into two. One is a resistance that is received when cutting the cultivated soil on both sides of the long pair of ridge members 15, and the other is a resistance that is received when the digging blade 10 digs up the cultivated soil.

ところで、トラクタの作業前進に伴い発生する鋤部材１５への土圧は、表土に近い部分では小さく、土中深部では大きくなるということが知られている。しかるに、上面に栽培土が載り重くなっている掘取り刃体１０を、支持バー１４の上下動によって揺動させるためには支持バー１４と支軸１３との距離L（図６参照）を大きくとる必要があるため、支軸１３は掘取り刃体１０の前部（刃部１１の後ろ）に設けられている。支軸１３には鋤部材１５の先端が連結されており、このため、刃部１１が土中深く入ると鋤部材１５も深く入るため、大きな抵抗を受けることとなる。従って、支軸１３の位置を掘取り刃体１０の前部に設けたままで、鋤部材１５が土中深く入らないようにする工夫が求められている。   By the way, it is known that the earth pressure applied to the eaves member 15 as the tractor moves forward is small in the portion close to the top soil and large in the deep portion of the soil. However, in order to rock the digging blade body 10 on which the cultivated soil is placed on the upper surface by the vertical movement of the support bar 14, the distance L (see FIG. 6) between the support bar 14 and the support shaft 13 is increased. Therefore, the support shaft 13 is provided at the front portion of the digging blade body 10 (behind the blade portion 11). The tip end of the eaves member 15 is connected to the support shaft 13. For this reason, when the blade portion 11 enters deeply into the soil, the eaves member 15 also enters deeply, so that a large resistance is received. Accordingly, there is a demand for a contrivance to prevent the dredge member 15 from entering deeply in the soil while the position of the support shaft 13 is provided at the front portion of the digging blade body 10.

また、図５又は図６に示すように、従来は掘取り刃体１０の前部と刃部１１は水平面に対してほぼ等しい角度で連結されているため、掘り取り刃体１０が前下がりに傾斜したまま前方に進むと、刃部１１も同様の傾斜で（掘りながら）進むことになるため、大きな抵抗を受ける。土中深部においてはこの抵抗はさらに大きくなる。
以上のように、従来は長いも掘取り装置を牽引するトラクタが進行中に大きな抵抗力を受けるため、大きなパワーのトラクタを使用する必要があり、農家の経済的負担は過度なものとなっていた。
特開２０００−２０１５１４号公報 Further, as shown in FIG. 5 or FIG. 6, since the front part of the digging blade body 10 and the blade part 11 are conventionally connected at an approximately equal angle with respect to the horizontal plane, the digging blade body 10 is lowered forward. If it advances ahead with inclination, since blade part 11 will also advance (while digging) with the same inclination, it will receive big resistance. In the deep part of the soil, this resistance is further increased.
As mentioned above, since the tractor that pulls the digging device receives a large resistance force while it is in progress, it is necessary to use a large power tractor, and the economic burden on the farmer is excessive. .
JP 2000-201514 A

本発明は上記のような事情に鑑みなされたものであり、本発明の目的は、トラクタが長いも掘取り装置を牽引する際に受ける土からの抵抗力を軽減することにより、比較的小さなパワーのトラクタでも牽引が可能な長いも掘取り装置を提供することにある。   The present invention has been made in view of the above circumstances, and an object of the present invention is to reduce the resistance force from the soil that is received when towing the digging device even though the tractor is long, thereby reducing the power of relatively small power. The object is to provide a long digging device that can be pulled by a tractor.

本発明は長いも掘取り装置に関し、本発明の上記目的は、トラクタの後部に連結され、長いもの両側部の栽培土をトラクタの前進に従って掘り起こす１対の鋤部材と、前記１対の鋤部材の下部に回動自在に連結され、前部が刃部を形成し後部が上方に傾斜して配設された掘取り刃体とを有する長いも堀取り装置において、前記掘取り刃体と鋤部材との連結が１対の連結バーによって行われるものであり、前記連結バーの一端が前記鋤部材の下端に固着され、かつ、前記連結バーの他端が前記掘取り刃体の裏面に設けられた支軸に回動自在に装着されるとともに、前記連結バーが前記掘取り刃体の裏面に完全に隠れるように配設されることを特徴とする長いも堀取り装置によって達成される。   The present invention relates to a long digging device, and the object of the present invention is to connect a pair of ridge members connected to the rear portion of the tractor and dig up the cultivated soil on both sides as the tractor advances, and the pair of ridge members. In a long digging apparatus having a digging blade body that is pivotally connected to a lower portion, a front portion forms a blade portion, and a rear portion is inclined upward, the digging blade body and the dredge member, Are connected by a pair of connecting bars, one end of the connecting bar is fixed to the lower end of the saddle member, and the other end of the connecting bar is provided on the back surface of the digging blade body. This is achieved by a long digging device characterized in that it is rotatably mounted on a support shaft and the connecting bar is arranged so as to be completely hidden behind the digging blade body.

また、本発明の上記目的は、前記掘取り刃体の後部を無端パワーベルトコンベアで構成することにより、或いは、前記掘取り刃体を上下に揺動する揺動手段を備えることにより、効果的に達成される。
さらに、本発明の上記目的は、前記掘取り刃体の刃部が、該刃部を除く掘取り刃体の本体部分に対して５度乃至２０度の傾斜をもって取り付けられていることを特徴とする前記長いも堀取り装置によって、一層効果的に達成される。 Further, the above object of the present invention is effective by configuring the rear portion of the digging blade body with an endless power belt conveyor, or by providing swinging means for swinging the digging blade body up and down. To be achieved.
Furthermore, the object of the present invention is characterized in that the blade portion of the digging blade body is attached with an inclination of 5 degrees to 20 degrees with respect to the main body portion of the digging blade body excluding the blade section. This long digging device is more effectively achieved.

本発明に係る長いも堀取り装置によれば、トラクタが長いも掘取り装置を牽引する際に受ける土からの抵抗力が軽減されるので、比較的小さなパワーのトラクタでも牽引が可能となる。   According to the long digging apparatus according to the present invention, since the resistance force from the soil received when towing the digging apparatus is reduced, the tractor with a relatively small power can be pulled.

本発明に係る長いも掘取り装置について図面を参照しつつ詳細に説明する。
図１は本発明に係る長いも掘取り装置の側面の外観を示す図である。図１において、１０は掘取り刃体であり、刃部１１で掘り取った栽培土（長いもを含む。）を上面に載せ、トラクタの前進に伴って栽培土を後方上方に押し上げる働きをするものである。また、１５は長いもの両側部の栽培土を掘り起こす１対の鋤部材であり、断面が鋭角形状をしている（特許文献１、図２参照）。鋤部材１５の下端には連結バー１６の一端が接続されており、さらに、前記連結バー１６の他端は、前記掘取り刃体１０の裏側に設けられている支軸１３を介して回動自在に軸支されている。また、前記掘取り刃体１０は支持バー１４を上下動させることにより、支軸１３を支点として揺動（円弧運動）するようになっている。なお、揺動させるための手段は上記特許文献１に記載のものが利用できる。
このように、前記鋤部材１５が連結バー１６を介して支軸１３に軸支されているため、従来の掘取り装置（図６）のように鋤部材１５が土中深く入らず、土から受ける抵抗が少なくなる。また、刃部１１が掘取り刃体１０の本体部分に対して５〜２０度上方に傾いて取り付けられているので、刃部１１で掘り進むときに刃部１１を進行方向に対して平行になるように掘取り刃体１０の傾きを調整することが可能となるので、刃部１１が受ける土からの抵抗を少なくすることができる。 A long digging apparatus according to the present invention will be described in detail with reference to the drawings.
FIG. 1 is a view showing the external appearance of a long digging apparatus according to the present invention. In FIG. 1, reference numeral 10 denotes a digging blade body, which has a cultivated soil (including a long one) dug by the blade portion 11 on the upper surface, and works to push the cultivated soil upward and rearward as the tractor advances. It is. Moreover, 15 is a pair of eaves members that dig up the cultivated soil on both sides, and the cross section has an acute angle shape (see Patent Document 1 and FIG. 2). One end of a connecting bar 16 is connected to the lower end of the eaves member 15, and the other end of the connecting bar 16 is rotated via a support shaft 13 provided on the back side of the digging blade body 10. It is supported freely. Further, the digging blade body 10 swings (circulates) around the support shaft 13 by moving the support bar 14 up and down. As the means for swinging, the one described in Patent Document 1 can be used.
Thus, since the dredging member 15 is pivotally supported by the support shaft 13 via the connecting bar 16, the dredging member 15 does not enter deeply in the soil as in the conventional digging apparatus (FIG. 6), Less resistance. Further, since the blade portion 11 is attached to the main body portion of the digging blade body 10 by being inclined upward by 5 to 20 degrees, the blade portion 11 becomes parallel to the traveling direction when digging with the blade portion 11. Thus, since the inclination of the digging blade body 10 can be adjusted, the resistance from the soil received by the blade portion 11 can be reduced.

図２は、本発明に係る長いも掘取り装置を正面から見たときの外観図である。図２に示すように、連結バー１６は掘取り刃体１０の裏側にすっぽりと隠れるように配設されているので、連結バー１６自身が土の抵抗を受けることがない。   FIG. 2 is an external view when the long digging apparatus according to the present invention is viewed from the front. As shown in FIG. 2, the connecting bar 16 is disposed so as to be completely hidden behind the digging blade body 10, so that the connecting bar 16 itself does not receive soil resistance.

図３は本発明に係る長いも掘取り装置を裏面から見たときの外観図である。支軸１３に連結バー１６が軸支されていることを明確に示している。   FIG. 3 is an external view of the long digging apparatus according to the present invention as seen from the back side. It clearly shows that the connecting bar 16 is pivotally supported on the support shaft 13.

図４は本発明に係る長いも掘取り装置の第２実施例の側面の外観を示す図である。すなわち、前記掘取り刃体１０に無端ベルトコンベア１２が設けられたものであるが、その他の構成は図１に示す第１実施例のものと同様であるので、説明は省略する。
なお、無端ベルトコンベアの作用・効果については上記特許文献１に詳細に記載されているので、ここでは説明を省略する。
また、本願発明は長いも掘取り装置という名称を用いているが、本装置は長いもの掘取りにのみ用いられるものではなく、牛蒡等の根菜類一般の掘取りにも利用できるものである。 FIG. 4 is a view showing the external appearance of the side surface of the second embodiment of the long digging apparatus according to the present invention. That is, the endless belt conveyor 12 is provided on the digging blade body 10, but the other configuration is the same as that of the first embodiment shown in FIG.
Since the operation and effect of the endless belt conveyor is described in detail in the above-mentioned Patent Document 1, description thereof is omitted here.
Moreover, although this invention uses the name of a digging apparatus for a long time, this apparatus is not only used for digging a long thing, but can be used also for digging for root vegetables such as beef bowl.

本発明に係る長いも掘取り装置の第１実施例の側面の外観を示す図である。It is a figure which shows the external appearance of the side surface of 1st Example of the long digging apparatus which concerns on this invention. 本発明に係る長いも掘取り装置の第１実施例の正面の外観を示す図である。It is a figure which shows the external appearance of the front of 1st Example of the long digging apparatus which concerns on this invention. 本発明に係る長いも掘取り装置の第１実施例の裏面の外観を示す図である。It is a figure which shows the external appearance of the back surface of 1st Example of the long digging apparatus which concerns on this invention. 本発明に係る長いも掘取り装置の第２実施例の側面の外観を示す図である。It is a figure which shows the external appearance of the side surface of 2nd Example of the long digging apparatus which concerns on this invention. 従来の長いも掘取り装置の実施例の側面の外観を示す図である。It is a figure which shows the external appearance of the side surface of the Example of the conventional long digging apparatus. 従来の長いも掘取り装置の他の実施例の側面の外観を示す図である。It is a figure which shows the external appearance of the side surface of the other Example of the conventional long digging apparatus.

符号の説明Explanation of symbols

１０ 掘取り刃体
１１ 刃部
１２ 無端ベルトコンベア
１３ 支軸
１４ 支持バー
１５ 鋤部材
１６ 連結バー DESCRIPTION OF SYMBOLS 10 Digging blade body 11 Blade part 12 Endless belt conveyor 13 Support shaft 14 Support bar 15 Gutter member 16 Connection bar

Claims (4)

トラクタの後部に連結され、長いもの両側部の栽培土をトラクタの前進に従って掘り起こす１対の鋤部材と、前記１対の鋤部材の下部に回動自在に連結され、前部が刃部を形成し後部が上方に傾斜して配設された掘取り刃体とを有する長いも堀取り装置において、
前記掘取り刃体と鋤部材との連結が１対の連結バーによって行われるものであり、前記連結バーの一端が前記鋤部材の下端に固着され、かつ、前記連結バーの他端が前記掘取り刃体の裏面に設けられた支軸に回動自在に装着されるとともに、
前記連結バーが前記掘り取り刃体の裏面に完全に隠れるように配設されることを特徴とする長いも堀取り装置。
It is connected to the rear part of the tractor and is connected to a pair of ridge members that dig up the cultivated soil on both sides of the long one as the tractor advances, and to the lower part of the pair of ridge members, and the front part forms a blade part. In a long digging apparatus having a digging blade body with the rear portion inclined upward,
The connection between the digging blade body and the eaves member is performed by a pair of connection bars, one end of the connection bar is fixed to the lower end of the eaves member, and the other end of the connection bar is the digging While being rotatably mounted on a spindle provided on the back surface of the cutting blade body,
A long digging apparatus, wherein the connecting bar is disposed so as to be completely hidden behind the digging blade body.
前記掘り取り刃体の後部が無端パワーベルトコンベアで構成されていることを特徴とする請求項１に記載の長いも堀取り装置。
2. The long digging apparatus according to claim 1, wherein a rear portion of the digging blade body is constituted by an endless power belt conveyor.
前記掘り取り刃体を上下に揺動する揺動手段を備えている請求項１又は２に記載の長いも堀取り装置。
The long digging apparatus according to claim 1, further comprising a swinging means for swinging the digging blade body up and down.
前記掘取り刃体の刃部が、該刃部を除く掘取り刃体の本体部分に対して５度乃至２０度の傾斜をもって取り付けられていることを特徴とする請求項１乃至３のいずれかに記載の長いも堀取り装置。 The blade part of the digging blade body is attached with an inclination of 5 to 20 degrees with respect to the main body part of the digging blade body excluding the blade part. Long digging device as described in.
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* Cited by examiner, † Cited by third party
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CN102668797A (en) * 2012-01-15 2012-09-19 河南科技大学 Long-rootstalk crop harvester
JP2014212786A (en) * 2013-04-23 2014-11-17 株式会社苫米地技研工業 Chinese yam harvester connected to tractor
CN115399134A (en) * 2022-10-10 2022-11-29 江苏理工学院 Bidirectional self-adaptive sweet potato harvesting mechanism

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JP5791689B2 (en) * 2013-10-31 2015-10-07 株式会社苫米地技研工業 Long but harvesting device digging body vibration device

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59139015U (en) * 1983-03-10 1984-09-17 株式会社クボタ excavator
JPH04152810A (en) * 1990-10-18 1992-05-26 Kawabe Nouken Sangyo Kk Method and device for harvesting root vegetables
JP2000201514A (en) * 1999-01-18 2000-07-25 Tomabechi Giken Kogyo:Kk Digging apparatus for dioscorea batatas
JP2000270640A (en) * 1999-03-26 2000-10-03 Tomabechi Giken Kogyo:Kk Soil-loosening and removing device of digger for rootcrops

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59139015U (en) * 1983-03-10 1984-09-17 株式会社クボタ excavator
JPH04152810A (en) * 1990-10-18 1992-05-26 Kawabe Nouken Sangyo Kk Method and device for harvesting root vegetables
JP2000201514A (en) * 1999-01-18 2000-07-25 Tomabechi Giken Kogyo:Kk Digging apparatus for dioscorea batatas
JP2000270640A (en) * 1999-03-26 2000-10-03 Tomabechi Giken Kogyo:Kk Soil-loosening and removing device of digger for rootcrops

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102668797A (en) * 2012-01-15 2012-09-19 河南科技大学 Long-rootstalk crop harvester
JP2014212786A (en) * 2013-04-23 2014-11-17 株式会社苫米地技研工業 Chinese yam harvester connected to tractor
CN115399134A (en) * 2022-10-10 2022-11-29 江苏理工学院 Bidirectional self-adaptive sweet potato harvesting mechanism
CN115399134B (en) * 2022-10-10 2023-11-07 江苏理工学院 Bidirectional self-adaptive sweet potato harvesting mechanism

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