JP4372714B2

JP4372714B2 - Weeding machine

Info

Publication number: JP4372714B2
Application number: JP2005106920A
Authority: JP
Inventors: 浩二寺林; 光世浅川
Original assignee: 浩二寺林; 光世浅川
Priority date: 2005-04-01
Filing date: 2005-04-01
Publication date: 2009-11-25
Anticipated expiration: 2025-04-01
Also published as: JP2006280308A

Description

本発明は、草株を除去する草抜き機の改良に関する。 The present invention relates to an improvement of a weeding machine for removing grass stocks.

本発明者は、さきに特開２００１−３３３６０１号公報の図３に示されるような、草株を引き抜く草抜き具を発明したが、手動で鍬のように草株を掘り起こすため、草株を引き抜くには大きな力を要する、草株に対し手動で刃先を下げたり上げたりしなければならないため、草抜きに時間がかかる、などの問題点があった。
そこで本発明者は、草刈り機で使用されるガソリンエンジンや電動機等を利用して、草抜き刃を回動させ、短時間で気楽に、草株を引き抜き除去できる草抜き機を開発することに成功した。
特開２００１−３３３６０１号公報 The inventor previously invented a weeding tool for pulling out a grass stock as shown in FIG. 3 of JP 2001-333601 A, but in order to dig up the grass stock like a straw manually, There is a problem that it takes a lot of force to pull out, and it takes time to remove the grass because the blade tip must be lowered or raised manually against the grass stock.
Therefore, the present inventor succeeded in developing a weeding machine that uses a gasoline engine or an electric motor used in a mowing machine to rotate the weeding blade and can easily remove the grass stock in a short time. did.
JP 2001-333601 A

本発明は、車輪を把手杆を介して手押ししながら、労力少なく、迅速に草抜きができる草抜き機を提供するものである。
また、本発明は、走行車両（農耕機、トラクター等も含む）に装着して、畑、草原等の草抜き作業ができるようにした草抜き機を提供するものである。
さらに、本発明は、構造簡単で、安価に製作でき、保守点検が容易な草抜き機を提供するものである。 The present invention provides a weeding machine that can quickly remove a weed with less effort while manually pushing a wheel through a handle rod.
The present invention also provides a weeding machine that can be attached to a traveling vehicle (including an agricultural tractor, a tractor, etc.) and can perform weeding work such as fields and grasslands.
Furthermore, the present invention provides a weeding machine that has a simple structure, can be manufactured at low cost, and is easy to maintain and inspect.

本発明の草抜き機は、上記課題を達成するため、図示するように、第１発明は、両側板１１、１１と後板１２からなるフレーム１０の両側板１１、１１の前端に、くし歯板１３を複数個取り付け、両側板１１、１１の内側に、大カム２１の両側に第１小カム２２と第２小カム２３を固着した組合せカム２０を、駆動軸２４を介して回動可能に軸支し、その前部に、複数個の板状歯３１と、その間に介在させたそれぞれ方向の異なる２個の第１突起３０１と第２突起３０２を設けた草抜き刃３０を、支持軸１１１、１１２を介して回動可能に軸支してなり、組合せカム２０が、反時計方向に回動すると、第１小カム２２の第１爪２２１が、草抜き刃３０の第１突起３０１に当接して、第１突起３０１を押し回して、草抜き刃３０の歯先３１１を時計方向に回動し、組合せカム２０の反時計方向の回動が約７０°に達すると、第１小カム２２の第１爪２２１と草抜き刃３０の第１突起３０１との係合が外れると共に、草抜き刃３０の歯先３１１が下死点に来て草株７０を引掛け、さらに、組合せカム２０が、反時計方向に回動すると、第２小カム２３の第２爪２３１が、草抜き刃３０の第２突起３０２に当接して、第２突起３０２を押し回し、草抜き刃３０の歯先３１１を、さらに、時計方向に回動し、歯先３１１が草株７０を引き抜き、組合せカム２０の反時計方向の回動が約１１０°に達すると、第２小カム２３の第２爪２３１と草抜き刃３０の第２突起３０２との係合が外れ、さらに、組合せカム２０が反時計方向に約２００°まで回動し、大カム２１の第１摺動部２１１が、草抜き刃３０の摺動部当接面３６に当接して押し上げ、草抜き刃３０の歯先３１１が反時計方向に回動し、歯先３１１が草株７０をはさんだまま上昇し、大カム２１の第１摺動部２１１が、草抜き刃３０の大カム差入れ部３７に差し込まれると、大カム差入れ部３７を押し上げ、草抜き刃３０の歯先３１１が、さらに上昇し、組合せカム２０が続いて反時計方向に約２７０°まで回動すると、大カム２１の第２摺動部２１２が、草抜き刃３０の大カム差入れ部３７に当接し、草抜き刃３０を押し上げて歯先３１１が上昇して、くし歯板１３にはまり込み、歯先３１１の草株７０が押し出されて、歯先３１１から外れて落下し、ついで、第２摺動部２１２が、大カム差入れ部３７の差入れ部摺動面３７１を摺動して、反時計方向に回動する間、草抜き刃３０は上死点に停止し続け、組合せカム２０が反時計方向に約３６０°まで回動すると、再び、第１小カム２２の第１爪２２１が、草抜き刃３０の第１突起３０１に当接する操作をくり返しできるように装置し、草株７０にくいこみ、草株７０をすくい上げ、草株７０から土砂を落とすと共に、落下させて草抜きが順次できるようにしたものである。
また、本発明の草抜き機は、上記課題を達成するため、図示するように、第２発明は、第１発明において、前記草抜き歯３０Ｂの歯先３１１Ｂが、歯板３００Ｂに対して複数本に分岐されると共に、約１２０°に曲げられ、複数本に分岐された歯先３１１Ｂが地面に対し約３０°に傾斜して、先端を先細に形成したものである。
さらに、本発明の草抜き機は、上記課題を達成するため、図示するように、第３発明は、両側板１１Ｃ、１１Ｃと後板１２Ｃからなるフレーム１０Ｃの両側板１１Ｃ、１１Ｃの前端に、くし歯板１３Ｃを複数個取り付け、両側板１１Ｃ、１１Ｃの内側に、大カム２１Ｃの片側又は両側に同一方向の爪２２１Ｃを設けた小カム２２Ｃ、２２Ｃを固着した組合せカム２０Ｃを、駆動軸２４Ｃを介して回動可能に軸支し、その前部に、複数個の板状歯３１Ｃと、その間に介在させた１個又は同一方向の２個又は２個以上の突起３０１Ｃを設けた草抜き刃３０Ｃを、支持軸１１１Ｃ、１１２Ｃを介して回動可能に軸支してなり、組合せカム２０Ｃが、反時計方向に回動すると、小カム２２Ｃの爪２２１Ｃが、草抜き刃３０Ｃの突起３０１Ｃに当接して、突起３０１Ｃを押し回して、草抜き刃３０Ｃの歯先３１１Ｃを時計方向に回動し、組合せカム２０Ｃの反時計方向の回動が約７０°に達すると、小カム２２Ｃの爪２２１Ｃと草抜き刃３０Ｃの突起３０１Ｃとの係合が外れると共に、草抜き刃３０Ｃの歯先３１１Ｃが下死点に来て草株７０を引き抜き、さらに、組合せカム２０Ｃが反時計方向に約２００°まで回動し、大カム２１Ｃの第１摺動部２１１Ｃが、草抜き刃３０Ｃの摺動部当接面３６Ｃに当接して押し上げ、草抜き刃３０Ｃの歯先３１１Ｃが反時計方向に回動し、歯先３１１Ｃが草株７０をはさんだまま上昇し、大カム２１Ｃの第１摺動部２１１Ｃが、草抜き刃３０Ｃの大カム差入れ部３７Ｃに差し込まれると、大カム差入れ部３７Ｃを押し上げ、草抜き刃３０Ｃの歯先３１１Ｃが、さらに上昇し、組合せカム２０Ｃが続いて反時計方向に約２７０°まで回動すると、大カム２１Ｃの第２摺動部２１２Ｃが、草抜き刃３０Ｃの大カム差入れ部３７Ｃに当接し、草抜き刃３０Ｃを押し上げて歯先３１１Ｃが上昇して、くし歯板１３Ｃにはまり込み、歯先３１１Ｃの草株７０が押し出されて、歯先３１１Ｃから外れて落下し、ついで、第２摺動部２１２Ｃが、大カム差入れ部３７Ｃの差入れ部摺動面３７１Ｃを摺動して、反時計方向に回動する間、草抜き刃３０Ｃは上死点に停止し続け、組合せカム２０Ｃが反時計方向に約３６０°まで回動すると、再び、小カム２２Ｃの爪２２１Ｃが、草抜き刃３０Ｃの突起３０１Ｃに当接する操作をくり返しできるように装置し、草株７０にくいこみ、草株７０をすくい上げ、草株７０から土砂を落とすと共に、落下させて草抜きが順次できるようにしたものである。
さらにまた、本発明の草抜き機は、上記課題を達成するため、図示するように、第４発明は、第３発明において、前記草抜き歯３０Ｄの歯先３１１Ｄが、歯板３００Ｄに対して複数本に分岐されると共に、約１２０°に曲げられ、複数本に分岐された歯先３１１Ｄが地面に対し約３０°に傾斜して、先端を先細に形成したものである。
第１発明及び第２発明において、組合せカム２０は、駆動軸２４に、第１摺動部２１１と第２摺動部２１２を形成した大カム２１と、大カム２１の両側にそれぞれ方向の異なる爪２２１、２３１をもった小カム２２、２３を固着して軸着している。
また、第３発明及び第４発明において、組合せカム２０Ｃは、駆動軸２４Ｃに、第１摺動部２１１Ｃと第２摺動部２１２Ｃを形成した大カム２１Ｃと、大カム２１Ｃの片側又は両側に同一方向の爪２２１Ｃをもった小カム２２Ｃを固着している。
また、第１発明において、草抜き刃３０は、支持軸１１１、１１２に複数個の板状歯３１を一定間隔で並べ、板状歯３１の間にそれぞれ方向の異なる２個の第１及び第２突起３０１、３０２を同軸に板状歯３１の内側に固着し、さらに両突起３０１、３０２の間に大カム２１の第１及び第２摺動部２１１、２１２が摺動通過できる溝状の大カム差入れ部３７が設けられている。
また、第２発明において、草抜き刃３０Ｂは、次のように形成してもよい。すなわち、板状歯３１Ｂの上部を一体に形成した歯板３００Ｂをつくり、その下端に約１２０°に歯元を曲げられた歯先３１１Ｂを複数本設け、さらに、各歯先３１１Ｂを地面に対し約３０°傾斜させると共に、先細に形成するものである。
また、第３発明において、草抜き刃３０Ｃは、支持軸１１１Ｃ、１１２Ｃに複数個の板状歯３１Ｃを一定間隔で並べ、板状歯３１Ｃの間に同一方向の２個の突起３０１Ｃを同軸に板状歯３１Ｃの内側に固着し、さらに両突起３０１Ｃの間に大カム２１Ｃの第１及び第２摺動部２１１Ｃ、２１２Ｃが摺動通過できる溝状の大カム差入れ部３７Ｃが設けられている。
また、第４発明において、草抜き刃３０Ｄは、次のように形成してもよい。すなわち、板状歯３１Ｄの上部を一体に形成した歯板３００Ｄをつくり、その下端に約１２０°に歯元を曲げられた歯先３１１Ｄを複数本設け、さらに、各歯先３１１Ｄを地面に対し約３０°傾斜させると共に、先細に形成するものである。
さらに、いずれの発明においても、組合せカム２０の駆動軸２４は、ガソリンエンジンや電動機等の駆動源から駆動力を伝達して、草抜き刃３０を回動させるものである。 In order to achieve the above object, the weeding machine of the present invention, as shown in the drawing, shows that the first invention has comb teeth at the front ends of the side plates 11, 11 of the frame 10 composed of the side plates 11, 11 and the rear plate 12. A plurality of plates 13 are attached, and a combination cam 20 in which a first small cam 22 and a second small cam 23 are fixed to both sides of a large cam 21 inside both side plates 11, 11 can be rotated via a drive shaft 24. The weeding blade 30 provided with a plurality of plate-like teeth 31 and two first protrusions 301 and 302 having different directions interposed between them is supported at the front part thereof. When the combination cam 20 pivots counterclockwise through the shafts 111 and 112, the first claw 221 of the first small cam 22 is moved to the first protrusion of the weeding blade 30. 301, the first protrusion 301 is pushed and rotated, and the tooth tip 311 of the weeding blade 30 is moved. When the counterclockwise rotation of the combination cam 20 reaches about 70 °, the engagement between the first claw 221 of the first small cam 22 and the first protrusion 301 of the weeding blade 30 is performed. At the same time, when the tooth tip 311 of the weeding blade 30 comes to the bottom dead center, hooks the grass stock 70, and further the combination cam 20 rotates counterclockwise, the second claw 231 of the second small cam 23 is pulled. However, the second protrusion 302 of the weeding blade 30 is brought into contact with the second protrusion 302, and the tooth tip 311 of the weeding blade 30 is further rotated in the clockwise direction. When the counterclockwise rotation of the combination cam 20 reaches about 110 °, the engagement between the second claw 231 of the second small cam 23 and the second protrusion 302 of the weeding blade 30 is disengaged, The combination cam 20 rotates counterclockwise to about 200 °, and the first sliding portion 211 of the large cam 21 The tooth tip 311 of the weeding blade 30 is rotated counterclockwise, and the tooth tip 311 rises with the grass stock 70 sandwiched between the large cam 21. When the first sliding portion 211 is inserted into the large cam insertion portion 37 of the weeding blade 30, the large cam insertion portion 37 is pushed up, the tooth tip 311 of the weaving blade 30 is further raised, and the combination cam 20 is Subsequently, when it is rotated counterclockwise to about 270 °, the second sliding portion 212 of the large cam 21 comes into contact with the large cam insertion portion 37 of the weeding blade 30 and pushes up the weeding blade 30 to add the tooth tip 311. Rises and fits into the comb tooth plate 13, the plant stock 70 of the tooth tip 311 is pushed out and falls off the tooth tip 311, and then the second sliding portion 212 is moved to the large cam insertion portion 37. Weeding while sliding on insertion part sliding surface 371 and rotating counterclockwise 30 continues to stop at the top dead center, and when the combination cam 20 rotates counterclockwise to about 360 °, the first pawl 221 of the first small cam 22 is again brought into contact with the first projection 301 of the weeding blade 30. A device is provided so that the abutting operation can be repeated, so that the grass stock 70 is hardened, the grass stock 70 is scooped up, the earth and sand are dropped from the grass stock 70, and the grass stock 70 can be sequentially removed by dropping.
In order to achieve the above object, the weeding machine of the present invention has a plurality of tooth tips 311B of the weaving teeth 30B with respect to the tooth plate 300B in the first invention as shown in the drawing. A tooth tip 311B that is branched into a book, bent at about 120 °, and branched into a plurality of pieces is inclined at about 30 ° with respect to the ground, and the tip is tapered.
Further, the weeding machine of the present invention achieves the above-mentioned problem. As shown in the figure, the third invention is arranged at the front ends of the side plates 11C, 11C of the frame 10C composed of the side plates 11C, 11C and the rear plate 12C. A plurality of comb teeth plates 13C are attached, and a combination cam 20C in which small cams 22C and 22C having claws 221C in the same direction on one side or both sides of the large cam 21C are fixed inside the side plates 11C and 11C is connected to the drive shaft 24C. The weed is provided with a plurality of plate-like teeth 31C and one or two or two or more projections 301C in the same direction interposed between the plurality of plate-like teeth 31C. The blade 30C is pivotally supported via the support shafts 111C and 112C. When the combination cam 20C is rotated counterclockwise, the claw 221C of the small cam 22C is moved by the protrusion 301C of the weeding blade 30C. In contact with When the protrusion 301C is pushed and rotated, the tooth tip 311C of the weeding blade 30C is rotated clockwise, and when the counterclockwise rotation of the combination cam 20C reaches about 70 °, the claw 221C of the small cam 22C and the weeding are removed. The blade 30C is disengaged from the protrusion 301C, the tooth tip 311C of the weeding blade 30C comes to the bottom dead center, pulls out the grass stock 70, and the combination cam 20C rotates counterclockwise to about 200 °. Then, the first sliding portion 211C of the large cam 21C pushes up against the sliding portion abutting surface 36C of the weeding blade 30C, and the tooth tip 311C of the weaving blade 30C rotates counterclockwise, When the tip 311C rises with the grass stock 70 interposed therebetween and the first sliding portion 211C of the large cam 21C is inserted into the large cam insertion portion 37C of the weeding blade 30C, the large cam insertion portion 37C is pushed up to remove the weed The tooth tip 311C of the blade 30C When the combination cam 20C is further raised and subsequently rotated counterclockwise to about 270 °, the second sliding portion 212C of the large cam 21C comes into contact with the large cam insertion portion 37C of the weeding blade 30C, and the weeding is performed. The tooth tip 311C is lifted by pushing up the blade 30C, and is inserted into the comb tooth plate 13C. The grass stock 70 of the tooth tip 311C is pushed out and falls off the tooth tip 311C, and then the second sliding portion 212C. However, while sliding on the insertion portion sliding surface 371C of the large cam insertion portion 37C and rotating counterclockwise, the weeding blade 30C continues to stop at the top dead center, and the combination cam 20C rotates counterclockwise. When rotating to about 360 °, the claw 221C of the small cam 22C is once again operated so as to repeat the operation of contacting the projection 301C of the weeding blade 30C, scooping up the grass stock 70, scooping up the grass stock 70, From stock 70 With dropping the sand, grass vent is dropped is that to be able to turn.
Furthermore, the weeding machine of the present invention achieves the above-mentioned problem. As shown in the figure, the fourth invention is the third invention, in which the tooth tip 311D of the weaving tooth 30D is relative to the tooth plate 300D. A tooth tip 311D that is branched into a plurality of pieces, bent at about 120 °, and branched into a plurality of pieces is inclined at about 30 ° with respect to the ground, and the tip thereof is tapered.
In the first invention and the second invention, the combination cam 20 is different in the direction of the large cam 21 in which the first sliding portion 211 and the second sliding portion 212 are formed on the drive shaft 24 and on both sides of the large cam 21. Small cams 22 and 23 having claws 221 and 231 are fixedly attached to the shaft.
In the third and fourth inventions, the combination cam 20C includes a large cam 21C having a first sliding portion 211C and a second sliding portion 212C formed on the drive shaft 24C, and one or both sides of the large cam 21C. A small cam 22C having a claw 221C in the same direction is fixed.
In the first invention, the weeding blade 30 has a plurality of plate-like teeth 31 arranged on the support shafts 111 and 112 at regular intervals, and the two first and second pieces having different directions are arranged between the plate-like teeth 31. Two protrusions 301 and 302 are coaxially fixed to the inside of the plate-like tooth 31, and the first and second sliding portions 211 and 212 of the large cam 21 can slide between the protrusions 301 and 302. A large cam insertion portion 37 is provided.
In the second invention, the weeding blade 30B may be formed as follows. That is, the tooth plate 300B integrally formed with the upper part of the plate-like teeth 31B is formed, and a plurality of tooth tips 311B whose roots are bent at about 120 ° are provided at the lower end thereof, and each tooth tip 311B is arranged on the ground. It is inclined about 30 ° and is tapered.
In the third invention, the weeding blade 30C has a plurality of plate-like teeth 31C arranged on the support shafts 111C and 112C at regular intervals, and two protrusions 301C in the same direction are coaxially arranged between the plate-like teeth 31C. A groove-like large cam insertion portion 37C that is fixed to the inner side of the plate-like tooth 31C and that allows the first and second sliding portions 211C and 212C of the large cam 21C to slide through is provided between both protrusions 301C. .
In the fourth invention, the weeding blade 30D may be formed as follows. That is, a tooth plate 300D in which the upper part of the plate-like tooth 31D is integrally formed is formed, and a plurality of tooth tips 311D whose roots are bent at approximately 120 ° are provided at the lower end thereof, and each tooth tip 311D is further connected to the ground. It is inclined about 30 ° and is tapered.
Further, in any of the inventions, the drive shaft 24 of the combination cam 20 transmits the driving force from a drive source such as a gasoline engine or an electric motor to rotate the weeding blade 30.

本発明の草抜き機は、草抜き刃の動力駆動により、草株にくいこみ、すくい上げ、土砂落しし、落下させて草抜きすることが自動的に行われることになり、小型の家庭用から業務用の大型まで適用できることになった。 The weeding machine of the present invention is automatically driven to remove grass, rake up, scoop, debris, drop and remove grass by power driving of the weeding blade. It became possible to apply even for large size.

本発明草抜き機は、組合せカムと、複数個の草抜き刃と、くし歯板を、それぞれ設けたフレームを備えたものである。 The weeding machine of the present invention includes a frame provided with a combination cam, a plurality of weeding blades, and a comb tooth plate.

第１発明の実施例が、図１乃至図１８に示されている。
本発明実施例の草抜き機は、フレーム１０と、組合せカム２０と、草抜き刃３０と、くし歯板１３と、手押し把手杆４０と、自在車輪などの一輪車５０と、ガソリンエンジン６０とを備えている。
フレーム１０は、図１及び図２に示すように、両側板１１、１１の前端に下向きの複数のくし歯板１３を設け、後端に後板１２を設けた枠形のもので、駆動軸２４と支持軸１１１、１１２を設けている。
組合せカム２０は、図１及び図３に示すように、駆動軸２４に軸着した大カム２１と、第１小カム２２と、第２小カム２３とからなる。
大カム２１は、外周部に直線状の第１摺動部２１１と円弧状の第２摺動部２１２を形成している。
第１小カム２２には第１爪２２１を、第２小カム２３には第２爪２３１を設けると共に、第１爪２２１と第２爪２３１の先端を一定角度ずらせて大カム２１の両側の同軸上にそれぞれ固着している。
草抜き刃３０は、図１及び図４に示すように、４個の板状歯３１と２個の突起３０１、３０２とからなる。
板状歯３１は、上側が円弧状で、下側が長く伸びて鎌状に湾曲して歯先３１１を形成し、４個が一定間隔で並べられている。
第１突起３０１及び第２突起３０２は、前記板状歯３１の内側に固着して同軸に設けられると共に、板状歯３１の反対方向に向かって、第１突起３０１と第２突起３０２の先端を一定角度ずらして形成されている。さらに、両突起３０１、３０２の間に溝状の大カム差入れ部３７が形成されている。
また、第２発明では、図１８に示すように、歯先３１１Ｂが、歯板３００Ｂに対して約１２０°に曲げられると共に、４本に分岐された歯先３１１Ｂが地面に対し約３０°に傾斜して、先端を先細にした草抜き歯３０Ｂに形成している。
手押し把手杆４０は、先端にフレーム１０を取付け、駆動軸２４に回転を伝達できる歯車装置４１１等を備えると共に、歯車装置４１１と連動した回転軸（図示しない）を内蔵し、後端に操作のための把手４１を設けている。
一輪車５０は、草抜き機を地面に対し一定間隔を保ちながら、前後方向へ自由に移動できるように設けられている。
ガソリンエンジン６０は、草刈り機等で使用されるもので、手押し把手杆４０の後端に取付け、内蔵回転軸に連結されている。
第１発明及び第２発明では、ガソリンエンジン６０を始動し、手押し把手杆４０を一輪車を介して押し進めると、図５乃至図１７に示すように、駆動軸２４が反時計方向に回転し、フレーム１０に軸支された組合せカム２０が反時計方向に回動し、大カム２１と同軸に設けた第１小カム２２の第１爪２２１が、草抜き刃３０又は３０Ｂの第１突起３０１又は３０１Ｂに当接して、第１突起３０１又は３０１Ｂを押し回して、草抜き刃３０又は３０Ｂの歯先３１１又は３１１Ｂを時計方向に回動し、組合せカム２０の反時計方向の回動が約７０°に達すると、第１小カム２２の第１爪２２１と草抜き刃３０又は３０Ｂの第１突起３０１又は３０１Ｂとの係合が外れ、草抜き刃３０又は３０Ｂの歯先３１１又は３１１Ｂが下死点に来て草株７０を引掛け、さらに、組合せカム２０が、反時計方向に回動すると、第２小カム２３の第２爪２３１が、草抜き刃３０又は３０Ｂの第２突起３０２又は３０２Ｂに当接して、第２突起３０２又は３０２Ｂを押し回し、草抜き刃３０又は３０Ｂの歯先３１１又は３１１Ｂを、さらに、時計方向に回動し、歯先３１１又は３１１Ｂが草株７０を引き抜き、組合せカム２０の反時計方向の回動が約１１０°に達すると、第２小カム２３の第２爪２３１と草抜き刃３０又は３０Ｂの第２突起３０２又は３０２Ｂとの係合が外れ、さらに、組合せカム２０が反時計方向に約２００°まで回動し、大カム２１の第１摺動部２１１が、草抜き刃３０又は３０Ｂの摺動部当接面３６または３６Ｂに当接して押し上げ、草抜き刃３０又は３０Ｂの歯先３１１又は３１１Ｂが反時計方向に回動し、歯先３１１又は３１１Ｂが草株７０をはさんだまま上昇し、大カム２１の第１摺動部２１１が、草抜き刃３０又は３０Ｂの大カム差入れ部３７または３７Ｂに差し込まれると、大カム差入れ部３７又は３７Ｂを押し上げ、草抜き刃３０又は３０Ｂの歯先３１１又は３１１Ｂが、さらに上昇し、組合せカム２０が続いて反時計方向に約２７０°まで回動し、大カム２１の第２摺動部２１２が、草抜き刃３０又は３０Ｂの大カム差入れ部３７または３７Ｂに当接し、草抜き刃３０又は３０Ｂを押し上げて歯先３１１又は３１１Ｂが上昇し、フレーム１０のくし歯板１３にはまり込み、歯先３１１又は３１１Ｂの草株７０が押し出されて、歯先３１１又は３１１Ｂから外れて落下し、ついで、第２摺動部２１２が、大カム差入れ部３７又は３７Ｂの差入れ部摺動面３７１又は３７１Ｂを摺動して、反時計方向に回動する間、草抜き刃３０又は３０Ｂは上死点に停止し続け、さらに、組合せカム２０が反時計方向に約３６０°まで回動すると、再び、第１小カム２２の第１爪２２１が、草抜き刃３０又は３０Ｂの第１突起３０１又は３０１Ｂに当接するように動作し、以上のことを繰り返し行うことにより、歯先３１１又は３１１Ｂが草株７０にくいこみ、草株７０をすくい上げ、歯先３１１又は３１１Ｂがくし歯板１３の間に進入して草株７０から土砂を落とし、落下させて草抜きができるようになる。 An embodiment of the first invention is shown in FIGS.
The weeding machine according to the embodiment of the present invention includes a frame 10, a combination cam 20, a weeding blade 30, a comb tooth plate 13, a hand grip 40, a unicycle 50 such as a free wheel, and a gasoline engine 60. I have.
As shown in FIGS. 1 and 2, the frame 10 has a frame shape in which a plurality of downward comb teeth plates 13 are provided at the front ends of the side plates 11 and 11, and a rear plate 12 is provided at the rear ends. 24 and support shafts 111 and 112 are provided.
As shown in FIGS. 1 and 3, the combination cam 20 includes a large cam 21 that is attached to the drive shaft 24, a first small cam 22, and a second small cam 23.
The large cam 21 has a linear first sliding portion 211 and an arc-shaped second sliding portion 212 formed on the outer peripheral portion.
The first small cam 22 is provided with a first claw 221, and the second small cam 23 is provided with a second claw 231, and the tips of the first claw 221 and the second claw 231 are shifted by a certain angle so Each is fixed on the same axis.
As shown in FIGS. 1 and 4, the weeding blade 30 includes four plate teeth 31 and two protrusions 301 and 302.
The plate-like teeth 31 have an arc shape on the upper side and extend long on the lower side to curve in a sickle shape to form a tooth tip 311, and four are arranged at regular intervals.
The first protrusion 301 and the second protrusion 302 are fixed to the inside of the plate-like tooth 31 and provided coaxially, and the tips of the first protrusion 301 and the second protrusion 302 are opposite to the plate-like tooth 31. Are shifted by a certain angle. Further, a groove-like large cam insertion portion 37 is formed between the protrusions 301 and 302.
In the second invention, as shown in FIG. 18, the tooth tip 311B is bent to about 120 ° with respect to the tooth plate 300B, and the tooth tip 311B branched into four is about 30 ° to the ground. It is inclined and formed on a weed tooth 30B having a tapered tip.
The handgrip handle 40 includes a gear device 411 and the like that can attach the frame 10 to the tip and transmit the rotation to the drive shaft 24, and has a built-in rotary shaft (not shown) that is linked to the gear device 411. A handle 41 is provided.
The unicycle 50 is provided so that the weeding machine can be freely moved in the front-rear direction while maintaining a certain distance from the ground.
The gasoline engine 60 is used in a mower or the like, and is attached to the rear end of the hand grip 40 and is connected to a built-in rotating shaft.
In the first and second inventions, when the gasoline engine 60 is started and the handhold handle 40 is pushed through the unicycle, the drive shaft 24 rotates counterclockwise as shown in FIGS. 10 is pivoted counterclockwise, and the first claw 221 of the first small cam 22 provided coaxially with the large cam 21 is the first protrusion 301 of the weeding blade 30 or 30B or The first protrusion 301 or 301B is pressed against the blade 301B, the tooth tip 311 or 311B of the weeding blade 30 or 30B is rotated clockwise, and the counterclockwise rotation of the combination cam 20 is about 70. When reaching °, the engagement between the first claw 221 of the first small cam 22 and the first protrusion 301 or 301B of the weeding blade 30 or 30B is released, and the tooth tip 311 or 311B of the weaving blade 30 or 30B is lowered. Come to the dead center and plant grass 70 When the combination cam 20 is further rotated counterclockwise, the second claw 231 of the second small cam 23 comes into contact with the second protrusion 302 or 302B of the weeding blade 30 or 30B, and the second protrusion 302 or 302B is pushed and rotated, the tooth tip 311 or 311B of the weeding blade 30 or 30B is further rotated clockwise, the tooth tip 311 or 311B pulls out the grass stock 70, and the combination cam 20 is rotated counterclockwise. When the rotation reaches about 110 °, the engagement between the second claw 231 of the second small cam 23 and the second protrusion 302 or 302B of the weeding blade 30 or 30B is disengaged, and the combination cam 20 is counterclockwise. The first sliding portion 211 of the large cam 21 is pushed up by abutting against the sliding portion abutting surface 36 or 36B of the weeding blade 30 or 30B. Tooth tip 311 or 311 Rotates counterclockwise, the tooth tip 311 or 311B rises with the grass stock 70 interposed therebetween, and the first sliding portion 211 of the large cam 21 moves to the large cam insertion portion 37 of the weeding blade 30 or 30B or When inserted into 37B, the large cam insertion portion 37 or 37B is pushed up, the tooth tip 311 or 311B of the weeding blade 30 or 30B is further raised, and the combination cam 20 continues to rotate counterclockwise to about 270 °. Then, the second sliding portion 212 of the large cam 21 comes into contact with the large cam insertion portion 37 or 37B of the weeding blade 30 or 30B, and the tooth tip 311 or 311B is raised by pushing up the weaving blade 30 or 30B. The blade 10 is inserted into the comb tooth plate 13 of the frame 10, the grass stock 70 of the tooth tip 311 or 311B is pushed out, falls off the tooth tip 311 or 311B, and then the second sliding portion 212 has a large cam difference. While sliding the insertion portion sliding surface 371 or 371B of the cutting portion 37 or 37B and rotating counterclockwise, the weeding blade 30 or 30B continues to stop at the top dead center, and the combination cam 20 When rotating counterclockwise to about 360 °, the first claw 221 of the first small cam 22 again operates so as to contact the first protrusion 301 or 301B of the weeding blade 30 or 30B. The tooth tip 311 or 311B scoops up the grass stock 70, scoops up the grass stock 70, the tooth tip 311 or 311B enters between the comb tooth plates 13, drops the earth and sand from the grass stock 70, and drops it. Weeding can be done.

第３発明の実施例が、図１９乃至図３２に示されている。
本発明実施例の草抜き機は、フレーム１０Ｃと、組合せカム２０Ｃと、草抜き刃３０Ｃと、くし歯板１３Ｃと、手押し把手杆４０Ｃと、自在車輪などの一輪車５０Ｃと、ガソリンエンジン６０Ｃとを備えている。
本発明実施例の草抜き機は、組合せカム２０Ｃ、草抜き刃３０Ｃ以外は、第１発明の実施例と同じであるので詳細説明は省略する。
組合せカム２０Ｃは、図１９及び図２０に示すように、駆動軸２４Ｃに軸着した大カム２１Ｃと、小カム２２Ｃ、２２Ｃとからなる。
大カム２１Ｃは、外周部に直線状の第１摺動部２１１Ｃと円弧状の第２摺動部２１２Ｃを形成している。
小カム２２Ｃ、２２Ｃは、爪２２１Ｃを設け、大カム２１Ｃの両側に爪２２１Ｃが同一方向になるように同軸上にそれぞれ固着している。
草抜き刃３０Ｃは、図１９及び図２１に示すように、４個の板状歯３１Ｃと２個の同一方向の突起３０１Ｃ、３０１Ｃとからなる。
板状歯３１Ｃは、上側が円弧状で、下側が長く伸びて鎌状に湾曲して歯先３１１Ｃを形成し、４個が一定間隔で並べられている。
突起３０１Ｃ、３０１Ｃは、前記板状歯３１Ｃの内側に２個固着して同軸に設けられると共に、板状歯３１Ｃの反対側に同一方向に向かって形成されている。さらに、両突起３０１Ｃ、３０１Ｃの間に溝状の大カム差入れ部３７Ｃが形成されている。
また、第４発明では、図３２に示すように、歯先３１１Ｄが、歯板３００Ｄに対して約１２０°に曲げられると共に、４本に分岐された歯先３１１Ｄが地面に対し約３０°に傾斜して、先端を先細にした草抜き歯３０Ｄに形成している。
第３発明及び第４発明では、ガソリンエンジン６０Ｃを始動し、手押し把手杆４０Ｃを一輪車を介して押し進めると、図２２乃至図３１に示すように、駆動軸２４Ｃが反時計方向に回転し、フレーム１０Ｃに軸支された組合せカム２０Ｃが反時計方向に回動し、大カム２１Ｃと同軸に設けた小カム２２Ｃ、２２Ｃの爪２２１Ｃ、２２１Ｃが、草抜き刃３０Ｃ又は３０Ｄの突起３０１Ｃ、３０１Ｃ又は３０１Ｄ、３０１Ｄに当接して、突起３０１Ｃ、３０１Ｃ又は３０１Ｄ、３０１Ｄを押し回して、草抜き刃３０Ｃ又は３０Ｄの歯先３１１Ｃ又は３１１Ｄを時計方向に回動し、組合せカム２０Ｃの反時計方向の回動が約７０°に達すると、小カム２２Ｃ、２２Ｃの爪２２１Ｃ、２２１Ｃと草抜き刃３０Ｃ又は３０Ｄの突起３０１Ｃ、３０１Ｃ又は３０１Ｄ、３０１Ｄとの係合が外れ、草抜き刃３０Ｃ又は３０Ｄの歯先３１１Ｃ又は３１１Ｄが下死点に来て草株７０を引き抜き、さらに、組合せカム２０Ｃが反時計方向に約２００°まで回動し、大カム２１Ｃの第１摺動部２１１Ｃが、草抜き刃３０Ｃ又は３０Ｄの摺動部当接面３６Ｃまたは３６Ｄに当接して押し上げ、草抜き刃３０Ｃ又は３０Ｄの歯先３１１Ｃ又は３１１Ｄが反時計方向に回動し、歯先３１１Ｃ又は３１１Ｄが草株７０をはさんだまま上昇し、大カム２１Ｃの第１摺動部２１１Ｃが、草抜き刃３０Ｃ又は３０Ｄの大カム差入れ部３７Ｃまたは３７Ｄに差し込まれると、大カム差入れ部３７Ｃ又は３７Ｄを押し上げ、草抜き刃３０Ｃ又は３０Ｄの歯先３１１Ｃ又は３１１Ｄが、さらに上昇し、組合せカム２０Ｃが続いて反時計方向に約２７０°まで回動すると、大カム２１Ｃの第２摺動部２１２Ｃが、草抜き刃３０Ｃ又は３０Ｄの大カム差入れ部３７Ｃまたは３７Ｄに当接し、草抜き刃３０Ｃ又は３０Ｄを押し上げて歯先３１１Ｃまたは３１１Ｄが上昇し、フレーム１０Ｃのくし歯板１３Ｃにはまり込み、歯先３１１Ｃ又は３１１Ｄの草株７０が押し出されて、歯先３１１Ｃ又は３１１Ｄから外れて落下し、ついで、第２摺動部２１２Ｃが、大カム差入れ部３７Ｃまたは３７Ｄの差入れ部摺動面３７１Ｃまたは３７１Ｄを摺動して、反時計方向に回動する間、草抜き刃３０Ｃ又は３０Ｄは上死点に停止し続け、さらに、組合せカム２０Ｃが反時計方向に約３６０°まで回動すると、再び、小カム２２Ｃ、２２Ｃの爪２２１Ｃ、２２１Ｃが、草抜き刃３０Ｃ又は３０Ｄの突起３０１Ｃ、３０１Ｃ又は３０１Ｄ、３０１Ｄに当接するように動作し、以上のことを繰り返すことにより、歯先３１１Ｃ又は３１１Ｄが草株７０にくいこみ、草株７０をすくい上げ、歯先３１１Ｃまたは３１１Ｄがくし歯板１３Ｃの間に進入して草株７０から土砂を落とし、落下させて草抜きができるようになる。 An embodiment of the third invention is shown in FIGS.
The weeding machine according to the embodiment of the present invention includes a frame 10C, a combination cam 20C, a weeding blade 30C, a comb tooth plate 13C, a hand grip 40C, a unicycle 50C such as a free wheel, and a gasoline engine 60C. I have.
Since the weeding machine of the embodiment of the present invention is the same as the embodiment of the first invention except for the combination cam 20C and the weeding blade 30C, detailed description is omitted.
As shown in FIGS. 19 and 20, the combination cam 20C includes a large cam 21C attached to the drive shaft 24C and small cams 22C and 22C.
The large cam 21 C forms a linear first sliding portion 211 C and an arc-shaped second sliding portion 212 C on the outer peripheral portion.
The small cams 22C, 22C are provided with claws 221C, and are fixed coaxially on both sides of the large cam 21C so that the claws 221C are in the same direction.
As shown in FIGS. 19 and 21, the weeding blade 30C includes four plate teeth 31C and two protrusions 301C and 301C in the same direction.
The plate-like teeth 31 C have an arc shape on the upper side, and the lower side extends long and curves in a sickle shape to form a tooth tip 311 C, and four are arranged at regular intervals.
Two protrusions 301C and 301C are fixed to the inside of the plate-like tooth 31C and are provided coaxially, and are formed on the opposite side of the plate-like tooth 31C in the same direction. Further, a groove-like large cam insertion portion 37C is formed between the protrusions 301C and 301C.
In the fourth invention, as shown in FIG. 32, the tooth tip 311D is bent at about 120 ° with respect to the tooth plate 300D, and the tooth tip 311D branched into four is about 30 ° with respect to the ground. It is inclined and formed on a weed tooth 30D having a tapered tip.
In the third and fourth aspects of the invention, when the gasoline engine 60C is started and the push handle rod 40C is pushed through the unicycle, the drive shaft 24C rotates counterclockwise as shown in FIGS. The combination cam 20C pivotally supported by 10C is rotated counterclockwise, and the claws 221C and 221C of the small cams 22C and 22C provided coaxially with the large cam 21C are the projections 301C and 301C of the weeding blade 30C or 30D or 301D, 301D abuts and pushes the projections 301C, 301C or 301D, 301D to rotate the tooth tip 311C or 311D of the weeding blade 30C or 30D clockwise, and the combination cam 20C rotates counterclockwise. When the movement reaches about 70 °, the claws 221C and 221C of the small cams 22C and 22C and the projections 301C and 301C of the weeding blade 30C or 30D or 301D and 301D are disengaged, the tooth tip 311C or 311D of the weeding blade 30C or 30D comes to the bottom dead center, pulls out the grass stock 70, and the combination cam 20C rotates counterclockwise to about 200 °. The first sliding part 211C of the large cam 21C comes into contact with the sliding part contact surface 36C or 36D of the weeding blade 30C or 30D and pushes up, and the tooth tip 311C or 311D of the weeding blade 30C or 30D is pushed up. It rotates counterclockwise, the tooth tip 311C or 311D rises while holding the grass stock 70, and the first sliding portion 211C of the large cam 21C is inserted into the large cam insertion portion 37C or 37D of the weeding blade 30C or 30D. , The large cam insertion portion 37C or 37D is pushed up, the tooth tip 311C or 311D of the weeding blade 30C or 30D is further raised, and the combination cam 20C is subsequently countered. When rotating to about 270 ° in the metering direction, the second sliding portion 212C of the large cam 21C comes into contact with the large cam insertion portion 37C or 37D of the weeding blade 30C or 30D and pushes up the weaving blade 30C or 30D. The tooth tip 311C or 311D rises, fits into the comb tooth plate 13C of the frame 10C, the grass stock 70 of the tooth tip 311C or 311D is pushed out, falls off the tooth tip 311C or 311D, and then the second slide While the moving portion 212C slides on the insertion portion sliding surface 371C or 371D of the large cam insertion portion 37C or 37D and rotates counterclockwise, the weeding blade 30C or 30D continues to stop at the top dead center. Further, when the combination cam 20C is rotated counterclockwise to about 360 °, the claws 221C and 221C of the small cams 22C and 22C again become the weeding blade 30C or 30. When the tooth tip 311C or 311D is squeezed into the grass stock 70, the tooth stock 70 is scooped up, and the tooth tip 311C or 311D is a comb tooth by operating so as to contact the projections 301C, 301C or 301D, 301D. It enters between the boards 13C, drops the earth and sand from the grass stock 70, and falls to allow weeding.

本発明の草抜き機は、構造簡単で、量産でき、また、組合せカムを軸方向に複数個取り付けると共に、草抜き刃と突起を支持軸に複数個取り付けると、業務用の大型の草抜き機ができる。 The weeding machine of the present invention has a simple structure and can be mass-produced. When a plurality of combination cams are attached in the axial direction and a plurality of weeding blades and projections are attached to a support shaft, a large weeding machine for business use Can do.

第１発明実施例の要部の説明図である。It is explanatory drawing of the principal part of 1st invention Example. 図１のフレームを下方から見た説明図である。It is explanatory drawing which looked at the flame | frame of FIG. 1 from the downward direction. 図１の組合せカムを前方から見た説明図である。It is explanatory drawing which looked at the combination cam of FIG. 1 from the front. 図１の草抜き刃を後方から見た説明図である。It is explanatory drawing which looked at the weeding blade of FIG. 1 from back. 図１の組合せカムと草抜き刃の作動状況を示す説明図である。It is explanatory drawing which shows the operating condition of the combination cam of FIG. 1, and the weeding blade. 図１の組合せカムと草抜き刃の別の作動状況を示す説明図である。It is explanatory drawing which shows another operating condition of the combination cam of FIG. 1, and a weeding blade. 図１の組合せカムと草抜き刃のさらに別の作動状況を示す説明図である。It is explanatory drawing which shows another operating condition of the combination cam of FIG. 1, and the weeding blade. 図１の組合せカムと草抜き刃のさらに別の作動状況を示す説明図である。It is explanatory drawing which shows another operating condition of the combination cam of FIG. 1, and the weeding blade. 図１の組合せカムと草抜き刃のさらに別の作動状況を示す説明図である。It is explanatory drawing which shows another operating condition of the combination cam of FIG. 1, and the weeding blade. 図１の組合せカムと草抜き刃のさらに別の作動状況を示す説明図である。It is explanatory drawing which shows another operating condition of the combination cam of FIG. 1, and the weeding blade. 図１の組合せカムと草抜き刃のさらに別の作動状況を示す説明図である。It is explanatory drawing which shows another operating condition of the combination cam of FIG. 1, and the weeding blade. 図１の組合せカムと草抜き刃のさらに別の作動状況を示す説明図である。It is explanatory drawing which shows another operating condition of the combination cam of FIG. 1, and the weeding blade. 図１の組合せカムと草抜き刃のさらに別の作動状況を示す説明図である。It is explanatory drawing which shows another operating condition of the combination cam of FIG. 1, and the weeding blade. 図１の組合せカムと草抜き刃のさらに別の作動状況を示す説明図である。It is explanatory drawing which shows another operating condition of the combination cam of FIG. 1, and the weeding blade. 図１の組合せカムと草抜き刃のさらに別の作動状況を示す説明図である。It is explanatory drawing which shows another operating condition of the combination cam of FIG. 1, and the weeding blade. 図１の組合せカムと草抜き刃のさらに別の作動状況を示す説明図である。It is explanatory drawing which shows another operating condition of the combination cam of FIG. 1, and the weeding blade. 本発明実施例の全体概略説明図である。BRIEF DESCRIPTION OF THE DRAWINGS FIG. 第２発明の実施例の草抜き刃の説明図である。It is explanatory drawing of the weeding blade of the Example of 2nd invention. 第３発明の実施例の要部の説明図である。It is explanatory drawing of the principal part of the Example of 3rd invention. 図１９の組合せカムを前方から見た説明図である。It is explanatory drawing which looked at the combination cam of FIG. 19 from the front. 図１９の草抜き刃を後方から見た説明図である。It is explanatory drawing which looked at the weeding blade of FIG. 19 from back. 図１９の組合せカムと草抜き刃のさらに別の作動状況を示す説明図である。It is explanatory drawing which shows another operation condition of the combination cam of FIG. 19, and the weeding blade. 図１９の組合せカムと草抜き刃のさらに別の作動状況を示す説明図である。It is explanatory drawing which shows another operation condition of the combination cam of FIG. 19, and the weeding blade. 図１９の組合せカムと草抜き刃のさらに別の作動状況を示す説明図である。It is explanatory drawing which shows another operation condition of the combination cam of FIG. 19, and a weeding blade. 図１９の組合せカムと草抜き刃のさらに別の作動状況を示す説明図である。It is explanatory drawing which shows another operation condition of the combination cam of FIG. 19, and a weeding blade. 図１９の組合せカムと草抜き刃のさらに別の作動状況を示す説明図である。It is explanatory drawing which shows another operation condition of the combination cam of FIG. 19, and a weeding blade. 図１９の組合せカムと草抜き刃のさらに別の作動状況を示す説明図である。It is explanatory drawing which shows another operation condition of the combination cam of FIG. 19, and a weeding blade. 図１９の組合せカムと草抜き刃のさらに別の作動状況を示す説明図である。It is explanatory drawing which shows another operation condition of the combination cam of FIG. 19, and a weeding blade. 図１９の組合せカムと草抜き刃のさらに別の作動状況を示す説明図である。It is explanatory drawing which shows another operation condition of the combination cam of FIG. 19, and a weeding blade. 図１９の組合せカムと草抜き刃のさらに別の作動状況を示す説明図である。It is explanatory drawing which shows another operation condition of the combination cam of FIG. 19, and a weeding blade. 図１９の組合せカムと草抜き刃のさらに別の作動状況を示す説明図である。It is explanatory drawing which shows another operation condition of the combination cam of FIG. 19, and a weeding blade. 第４発明の実施例の草抜き刃の説明図である。It is explanatory drawing of the weeding blade of the Example of 4th invention.

Explanation of symbols

１０、１０Ｃフレーム
１１、１１Ｃフレームの側板
１１１、１１１Ｃ、１１２、１１２Ｃ支持軸
１２、１２Ｃフレームの後板
１３、１３Ｃくし歯板
２０、２０Ｃ組合せカム
２１、２１Ｃ大カム
２１１、２１１Ｃ大カムの第１摺動部
２１２、２１２Ｃ大カムの第２摺動部
２２、２２Ｃ第１小カム
２２１、２２１Ｃ第１小カムの第１爪
２３第２小カム
２３１第２小カムの第２爪
２４、２４Ｃ大カムの駆動軸
３０、３０Ｂ、３０Ｃ、３０Ｄ草抜き刃
３００Ｂ、３００Ｄ草抜き刃の歯板
３０１、３０１Ｂ、３０１Ｃ、３０１Ｄ草抜き刃の第１突起
３０２草抜き刃の第２突起
３１、３１Ｂ、３１Ｃ、３１Ｄ板状歯
３１１、３１１Ｂ、３１１Ｃ、３１１Ｄ草抜き刃の歯先
３６、３６Ｂ、３６Ｃ、３６Ｄ摺動部当接面
３７、３７Ｂ、３７Ｃ、３７Ｄ大カム差入れ部
３７１、３７１Ｂ、３７１Ｃ、３７１Ｄ差入れ部摺動面
４０、４０Ｃ手押し把手杆
５０、５０Ｃ一輪車
６０、６０Ｃガソリンエンジン
７０草株

10, 10C frame 11, 11C frame side plate 111, 111C, 112, 112C support shaft 12, 12C frame rear plate 13, 13C comb tooth plate 20, 20C combination cam 21, 21C large cam 211, 211C first of large cam Sliding portions 212, 212C Large cam second sliding portion 22, 22C First small cam 221, 221C First small cam first pawl 23 Second small cam 231 Second small cam second pawl 24, 24C Large Cam drive shaft 30, 30B, 30C, 30D Weeding blade 300B, 300D Tooth plate of weeding blade 301, 301B, 301C, 301D First projection of weeding blade 302 Second projection of weeding blade 31, 31B, 31C , 31D Plate-like teeth 311, 311 B, 311 C, 311 D Tooth tips of weeding blades 36, 36 B, 36 C, 36 D Sliding part contact surface 37, 3 B, 37C, 37D large cam pledged portion 371,371B, 371C, 371D pledged portion sliding surface 40,40C hand grip rod 50,50C unicycle 60,60C gasoline engine 70 Kusakabu

Claims

A plurality of comb plates 13 are attached to the front ends of the side plates 11, 11 of the frame 10 composed of the side plates 11, 11 and the rear plate 12, and the first small on both sides of the large cam 21 inside the side plates 11, 11. The combination cam 20 to which the cam 22 and the second small cam 23 are fixed is pivotally supported via a drive shaft 24, and a plurality of plate teeth 31 are interposed at the front portion thereof. The weeding blade 30 provided with two first protrusions 301 and second protrusions 302 having different directions is pivotally supported via support shafts 111 and 112,
When the combination cam 20 rotates counterclockwise, the first claw 221 of the first small cam 22 comes into contact with the first projection 301 of the weeding blade 30 and pushes the first projection 301 to remove the weed. When the tooth tip 311 of the blade 30 is rotated clockwise, and the counterclockwise rotation of the combination cam 20 reaches about 70 °, the first claw 221 of the first small cam 22 and the first of the weeding blade 30 are removed. When the engagement with the projection 301 is disengaged, the tooth tip 311 of the weeding blade 30 comes to the bottom dead center, hooks the grass stock 70, and the combination cam 20 rotates counterclockwise, the second small The second claw 231 of the cam 23 abuts on the second protrusion 302 of the weeding blade 30, pushes the second protrusion 302, and further rotates the tooth tip 311 of the weeding blade 30 in the clockwise direction. When the tooth tip 311 pulls out the grass stock 70 and the counterclockwise rotation of the combination cam 20 reaches about 110 °, The engagement between the second claw 231 of the second small cam 23 and the second projection 302 of the weeding blade 30 is disengaged, and the combination cam 20 is rotated counterclockwise to about 200 °, and the large cam 21 1 sliding part 211 abuts against sliding part contact surface 36 of weeding blade 30 and pushes up, tooth tip 311 of weeding blade 30 rotates counterclockwise, and tooth tip 311 pushes grass stock 70. When the first sliding portion 211 of the large cam 21 is inserted into the large cam insertion portion 37 of the weeding blade 30, the large cam insertion portion 37 is pushed up, and the tooth tip 311 of the weaving blade 30 is moved. Further, when the combination cam 20 is further rotated counterclockwise to about 270 °, the second sliding portion 212 of the large cam 21 comes into contact with the large cam insertion portion 37 of the weeding blade 30, and the grass When the punching blade 30 is pushed up, the tooth tip 311 rises and fits into the comb tooth plate 13, and the tooth tip 3 11 grass stock 70 is pushed out and falls off the tooth tip 311, and then the second sliding portion 212 slides on the insertion portion sliding surface 371 of the large cam insertion portion 37 to counterclockwise. When the combination cam 20 is rotated counterclockwise to about 360 °, the first claw 221 of the first small cam 22 is again moved to the grass. A device that can repeatedly repeat the operation of contacting the first protrusion 301 of the punching blade 30 so that the grass stock 70 can be removed, the grass stock 70 can be scooped up, the earth and sand can be dropped from the grass stock 70, and the grass can be removed in order. A weeding machine characterized by that.

The tooth tip 311B of the weed tooth 30B is branched into a plurality of teeth with respect to the tooth plate 300B, bent at about 120 °, and the tooth tips 311B branched into a plurality of teeth are inclined at about 30 ° with respect to the ground. The weeding machine according to claim 1, wherein the tip has a tapered shape.

A plurality of comb teeth plates 13C are attached to the front ends of the side plates 11C, 11C of the frame 10C composed of the side plates 11C, 11C and the rear plate 12C, and they are the same on either side or both sides of the large cam 21C inside the side plates 11C, 11C. A combination cam 20C, to which small cams 22C, 22C provided with directional claws 221C are fixed, is pivotally supported via a drive shaft 24C, and a plurality of plate-like teeth 31C are interposed between the plate teeth 31C. The weeding blade 30C provided with one or two or two or more protrusions 301C in the same direction interposed is pivotally supported via support shafts 111C and 112C,
When the combination cam 20C rotates counterclockwise, the claw 221C of the small cam 22C comes into contact with the protrusion 301C of the weeding blade 30C and pushes the protrusion 301C to rotate the tooth tip 311C of the weeding blade 30C clockwise. When the counterclockwise rotation of the combination cam 20C reaches about 70 °, the engagement between the claw 221C of the small cam 22C and the protrusion 301C of the weeding blade 30C is released, and the weeding blade 30C The tooth tip 311C comes to the bottom dead center and pulls out the grass stock 70. Further, the combination cam 20C rotates counterclockwise to about 200 °, and the first sliding portion 211C of the large cam 21C becomes the weeding blade. The tooth tip 311C of the weeding blade 30C rotates counterclockwise, and the tooth tip 311C rises with the grass stock 70 sandwiched between the large cam 21C. The first sliding portion 211C is weeding When inserted into the large cam insertion portion 37C of the blade 30C, the large cam insertion portion 37C is pushed up, the tooth tip 311C of the weeding blade 30C further rises, and the combination cam 20C continues to rotate counterclockwise to about 270 °. When it moves, the second sliding portion 212C of the large cam 21C comes into contact with the large cam insertion portion 37C of the weeding blade 30C, pushes up the weaving blade 30C, the tooth tip 311C rises, and fits into the comb tooth plate 13C. The grass stock 70 of the tooth tip 311C is pushed out and falls off the tooth tip 311C, and then the second sliding portion 212C slides on the insertion portion sliding surface 371C of the large cam insertion portion 37C. During the counterclockwise rotation, the weeding blade 30C continues to stop at the top dead center, and when the combination cam 20C rotates counterclockwise to about 360 °, the claw 221C of the small cam 22C again becomes the grass. Of the cutting blade 30C A device that can repeatedly repeat the operation of contacting the protrusion 301C, the grass stock 70 is difficult to scoop up, the grass stock 70 is scooped up, the earth and sand are dropped from the grass stock 70, and the grass can be removed sequentially by dropping. Weeding machine.

The tooth tip 311D of the weed tooth 30D is branched into a plurality of teeth with respect to the tooth plate 300D, bent at about 120 °, and the tooth tips 311D branched into a plurality of teeth are inclined at about 30 ° with respect to the ground. The weeding machine according to claim 3, wherein the tip is tapered.