WO2001006831A2 - Herse de tracteur - Google Patents

Herse de tracteur Download PDF

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Publication number
WO2001006831A2
WO2001006831A2 PCT/KR2000/000748 KR0000748W WO0106831A2 WO 2001006831 A2 WO2001006831 A2 WO 2001006831A2 KR 0000748 W KR0000748 W KR 0000748W WO 0106831 A2 WO0106831 A2 WO 0106831A2
Authority
WO
WIPO (PCT)
Prior art keywords
harrow
tractor
frame
brackets
central
Prior art date
Application number
PCT/KR2000/000748
Other languages
English (en)
Other versions
WO2001006831A3 (fr
Inventor
Kim Daeho
Original Assignee
Daeho Farming Machinery Co., Ltd.
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=19582284&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=WO2001006831(A2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Daeho Farming Machinery Co., Ltd. filed Critical Daeho Farming Machinery Co., Ltd.
Priority to AU58547/00A priority Critical patent/AU5854700A/en
Priority to JP2001511740A priority patent/JP2003505047A/ja
Publication of WO2001006831A2 publication Critical patent/WO2001006831A2/fr
Publication of WO2001006831A3 publication Critical patent/WO2001006831A3/fr

Links

Classifications

    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01B—SOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL
    • A01B49/00—Combined machines
    • A01B49/02—Combined machines with two or more soil-working tools of different kind
    • A01B49/022—Combined machines with two or more soil-working tools of different kind at least one tool being actively driven
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01B—SOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL
    • A01B19/00—Harrows with non-rotating tools
    • A01B19/02—Harrows with non-rotating tools with tools rigidly or elastically attached to a tool-frame

Definitions

  • the present invention relates to a harrow for a tractor and more particularly to a harrow for a tractor in which the soil surging phenomena during ground leveling work on, for example, a rice-paddy, is minimized and furthermore the opposite blades of a harrow 7 can be readily folded or unfolded and damage against an impact can be prevented with the provision of safety pin and safety plates.
  • the conventional harrow plates are associated with problems in that the arrangement of a plurality of blades on a single harrow plate causes soil surging or crowding during a leveling work on a field and the narrowness of the width of harrow entails depressed trail on the ground with the passage of a tractor so that effective leveling work is not carried out.
  • the young rice on higher elevation withers because of shortage of water while the young rice on lower elevation is submerged under water to death. Because of this reason, in the past, manual finishing work had to be undertaken, which requires hard labor and pains.
  • the conventional harrow employs two modes for operating side blades, the manual mode of which requires the operator to descent in the rice-paddy for manual operation with a lot of inconvenience and in the automatic mode of which foreign matter like wet soil can be introduced particularly in the hydraulic system to cause a trouble.
  • Another disadvantage with the conventional harrow is that the harrow is often damaged during the work in the marginal area of a water field because of an nonexistent or insufficient buffering mechanism for absorbing shock in the case of collision with a bank of rice-paddy.
  • the present invention is created to the above-described problems and so the object of the invention is to provide a harrow for a tractor in which the soil surging or crowding phenomena during ground leveling work on an agricultural field, particularly rice-paddy, is minimized and furthermore the opposite blades of a harrow can be readily folded or unfolded and damage against an impact can be prevented with the provision of safety pin and safety plates.
  • Figure 1 shows a perspective view of a harrow for a tractor according to a preferred embodiment of the present invention
  • Figure 2 shows a plan view for the harrow depicted in Figure 1
  • Figure 3 shows a perspective view of a harrow for a tractor according to another embodiment of the present invention
  • Figure 4 shows an exploded perspective view for the harrow depicted in Figure 3
  • Figure 5 shows an elevation view of the frame and central section used in the above embodiments in their combined state
  • Figure 6 shows a perspective view of a safety plate as attached in the above embodiments.
  • a harrow for a tractor comprising a frame 20 having one end connected to the top part of a rotavator 2 mounted detachably in the rear of a tractor 1, said frame being controlled in its elevation by a hydraulic cylinder 10, a central blade section30 connected to the underside of the frame 20 and left and right side blades 50 and 60 positioned on opposite sides of the central section 30, wherein the central blade section 30 is provided with a plurality of harrow pieces 37a and 37b having different extensions in the longitudinal direction of the tractor and the left and right side blades 50 and 60 are formed with a plurality of inclined harrow pieces 57 and 67 inclined inwardly toward bottom ends to gather soil to the inside.
  • a harrow for a tractor wherein the left and right side blades 50 and 60 are provided at opposite ends of the central blade section 30 so that they can swing vertically, the frame 20 is connected to brackets 2b and 2c by means of pins, the brackets being attached on a fixing shaft 2a in the top part of the rotavator 2, and the opposite ends of the hydraulic cylinder 10 are connected to brackets 23 and 11 respectively formed on a middle position of the frame 20 and a top middle position of the rotavator 2 by means of pins, the brackets 11 for one end of the hydraulic cylinder 10 are formed with long slots 11a to allow play for harrow plates 30, 50 and 60 at the time of vertical rocking by the tractor to thereby maintain a substantially constant elevation and the central blade section 30 is connected to the frame 20 by joining brackets 31 and 32 formed on the central blade section 30 and brackets 21 and 22 formed on the frame 20 by means of a central pin 24, so that the both end of central blade section 30 may swing up and down
  • brackets 31 and 32 provided on the central blade section 30 are positioned in front of the corresponding brackets 21 and 22 provided on the frame 10 and the central pm 24 is connected with a safety pin 25 for fixing harrow plates 30, 50 and 60.
  • the left and right side blades 50 and 60 are rotatably connected to the central blade section 30 by mounting pipes 51 and 61 formed on the respective one ends of side blades 50 and 60 on shafts 35 formed on the opposite ends of the central blade section 30, the pipes being inclined outwardly at a predetermined angle.
  • arms 52 and 62 formed on one side of the pipes 51 and 61 are connected to a bolt 10c fixed on the hydraulic cylinder 10 by an expansible link 70, and the left and right side blades 50 and 60 are provided with safety plates 53 and 63 to prevent those blades 50 and 60 from swinging rearward from the regular position by abutting on the central section 30 and to protect the side blades 50 and 60 against a possible damage in case of contacting an obstacle.
  • Figure 1 shows a perspective view of a harrow for a tractor according to the invention and Figure 2 shows the plan view of the same harrow.
  • the harrow comprises three sections; that is, a central blade section 30 and left and right side blade sections ⁇ O and 60.
  • the central blade section as well as left and right side blade sections are formed with a number of harrow pieces 37a, 37b, 57 and 67.
  • the central blade section 30 is seen to be formed with a number of harrow pieces 37a and 37b wherein the leading edges of the two types of harrow pieces are not flush. That is, the one harrow pieces 37a are formed relatively short to be positioned ahead of adjacent harrows 37b which are relatively long with their leading ends positioned in the rear.
  • the long harrow pieces 37b are formed with top surfaces slanting downward in rear direction to touch the earth only with their end edges in order to secure ample spaces on the surfaces for collecting soil. Particularly, as the harrow proceeds forward, the soil at higher locations gets leveled by harrow pieces, wherein predominantly the long harrow pieces 37b collect enough soil, with the collected soil falling down simultaneously to fill the depressed parts of the land, resulting in the leveled land. This leveling work produces no ridges mainly due to the soil slipping down between the neighboring harrow pieces 37a and 37b of the central blade section 30.
  • the left and right side blade sections 50 and 60 are formed with a number of slant harrow pieces 57 and 67 which are inclined inwardly up to their lower ends, so that the soil excavated may get driven inwardly as the tractor 1 moves forward.
  • soil and water are flow off between adjacent harrow pieces 57 and 67 while they are pressed inwardly with the advance of the tractor, whereby the lowered area caused by the passage of the tractor 1 can be effectively leveled.
  • Such a harrow for a tractor includes a fixing shaft 2a on a rotavator 2 mounted behind the tractor, which shaft is formed on its top side with brackets 2b and 2c, with the ends of a frame 20 substantially in the form of U fitted in the brackets 2b and 2c and secured there by means of pins.
  • brackets 11 and 23 At a middle position in the top of rotavator 2 and at a central position on the top of the frame 20 there are formed brackets 11 and 23 in which a hydraulic cylinder 10 are mounted with its opposite ends so that the harrow may swing vertically.
  • the hydraulic cylinder 10 is connected to the brackets 11 provided on a fixing shaft of the rotavator 2 by means of a pin 14 through a long vertical slot 11a on the brackets, wherein all the harrow plates 30, 50 and 60 are possible to work at an unvaried elevation due to the pin 14 movable in the long slot 11a even when the tractor 1 makes a vertical swinging motion through the hydraulic cylinder 10.
  • the hydraulic cylinder 10 can be operated by an operator in the driver's cabin by means of a valve switch (not shown), as the hydraulic cylinder is connected to the valve switch through a quick coupling 3 which is positioned at the end of the hydraulic hose 10a leading to the hydraulic cylinder 10.
  • a tension spring 12 is connected to both a spring ring 10b formed at an end of the hydraulic cylinder 10 and a bolt 13 mounted at the lower end of the brackets 11 to pull the hydraulic cylinder 10 downward, the force applied on the harrow plates 30, 50 and 60 mounted on the frame 20 for pressing the ground can be adjusted by screwing the bolt 13 up or down to control the tension of the spring 12.
  • brackets 31 and 32 attached on the top surface of the central blade section 30 and the brackets 21 and 22 attached on the lower side of the frame 20 are joined together by a central pin 24, the harrow plates 30, 50 and 60 can be pivoted up and down to the left and right side of the frame 20.
  • the brackets 31 and 32 provided on the central blade section 30 are positioned in front of the brackets 21 and 22 provided on the frame 20 and the central pin 24 is connected with a safety pin 25to secure the harrow plates 30, 50 and 60.
  • This safety pin 25 also serves to protect the central blade section 30 against a possible damage by breaking down when the tractor 1 inadvertently contacts an obstacle with its central blade section 30 as it moves backward.
  • the frame 20 and the central blade section 30 are prevented from tilting to either one side thanks to springs 34 mounted on both sides of the frame and central blade and intended to elastically support them, even when the harrow plates 30, 50 and 60 are lifted away from the ground surface, as can be seen in Figure 4.
  • Pipes 51 and 61 attached at respective one ends of the left and right side blade sections 50 and 60 are fitted rotatably on shafts 35 formed on opposite ends of the central blade section 30, which shafts are inclined outwardly at an angle of about 20. Therefore, when the left and right side blade sections 50 and 60 have been turned 90 up to the stoppers 33 fixed on the central blade section 30, the longitudinal stretches of the side blades 50 and 60 will rise to the level of the central blade section 30 over the angle of 20. Thus, when the inclination of the central blade section 30 becomes low enough, e.g. below 20 relative to the horizontal, with the fall of the frame 20, the left and right side blade sectionsSO and 60 will spread open as the result of their own weight rotary moment, which will be understood better later.
  • the left and right side blades 50 and 60 are provided on their back faces near the central blade section 30 with safety plates 53 and 63, fixed by bolts 54 and 64, to prevent the blades 50 and 60 from swinging rearward above the level of the horizontal by abutting on the central section 30 and to protect the side blades 50 and 60 against a possible damage in the case an obstacle is encountered as the tractor moves backward.
  • arms 52 and 62 formed on the above-described pipes 51 and 61 are connected to a bolt 10c fixed on the hydraulic cylinder 10 by a link 70 which comprises pipes 70b enclosing a part of rods 70b through springs 70a, with pins 70c inserted on the rods 70b supporting the springs 70a, to make the link 70 expansible.
  • the link 70 helps the side blades to open at a constant speed through supporting the arms 52 and 62 with the help of the springs 70a.
  • the link 70 exerts a finite resistance due to the springs 70a during the contraction of the hydraulic cylinder than during its expansion.
  • the harrows 30, 50 and 60 are formed in a form of arch so that the central point of the central blade section30 is about 50 mm higher than the outer ends of the side blades 50 and 60.
  • the soil pushed outward with passage of a tractor 1 and rotavator 2 can be collected again in the center by the arch-formed harrow plates 30, 50 and 60 mentioned above to result in balance in respect of surface level.
  • the harrows for a tractor are mostly assembled with the brackets integrally formed on the top of a rotavator 2, as seen in Figures 3 and 4.
  • the rotavator 2 is raised, the harrow plates 30, 50 and 60 are lifted as high as possible by fully contracting the hydraulic cylinder 10 and then the side blades 50 and 60 are caused to tilt by the own weight and then folded.
  • the roravator 2 is lowered to conduct cultivating work on, say, a rice-paddy and then leveling work on the rice-paddy is started with the side blades 50 and 60 unfolded and with the central section 30 lowered as well.
  • the soil dug up by the inclined harrow pieces 57 and 67 of opposite side blades 50 and 60 tends to collect in the central area so as to fill the lowered earth formed by the passage of the tractor, as indicated above in connection with Figure 2.
  • the harrows described above comprise a number of harrow pieces 37a, 37b, 57 and 67 alternatively protruding and distributed at regular intervals in such a manner as to allow the water portion to flow off between the harrow pieces during the leveling work for a rice-paddy.
  • the soil in higher elevation is effectively guided to lower elevation and the entrained water is drained between harrow pieces without being built up, with the result that the leveling work of a rice-paddy is effectively conducted.
  • the mobility and workability are improved particularly because of the provision the link 70 capable of readily folding or unfolding side blades 50 and 60 and safety against damage is enhanced due to a safety pin 25 and safety plates 53.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Soil Sciences (AREA)
  • Environmental Sciences (AREA)
  • Soil Working Implements (AREA)
  • Agricultural Machines (AREA)

Abstract

La présente invention concerne une herse de tracteur. La herse de tracteur selon l'invention comprend un cadre (20) dont une extrémité est reliée à la partie supérieure d'un élévateur pivotant (2) monté libérable à l'arrière d'un tracteur (1). Le levage du cadre est commandé par un cylindre (10) hydraulique, une section (30) de pale centrale reliée au côté inférieur du cadre (20) et des pales latérales (50 et 60) gauche et droite disposées sur des côtés opposés de la section (30) centrale. La section (30) de pale centrale comporte plusieurs pièces (37a et 37b) de herse présentant des prolongements différents dans la direction longitudinale du tracteur et les pales latérales (50 et 60) gauche et droite comportent plusieurs pièces (57 et 67) de herse inclinées vers l'intérieur en direction des extrémités inférieures pour ramener la terre à l'intérieur.
PCT/KR2000/000748 1999-07-24 2000-07-12 Herse de tracteur WO2001006831A2 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AU58547/00A AU5854700A (en) 1999-07-24 2000-07-12 Harrow for tractor
JP2001511740A JP2003505047A (ja) 1999-07-24 2000-07-12 トラクター用馬鍬

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1999/14917U 1999-07-24
KR19990014917U KR200166110Y1 (ko) 1999-07-24 1999-07-24 트랙터용 써레

Publications (2)

Publication Number Publication Date
WO2001006831A2 true WO2001006831A2 (fr) 2001-02-01
WO2001006831A3 WO2001006831A3 (fr) 2001-08-23

Family

ID=19582284

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2000/000748 WO2001006831A2 (fr) 1999-07-24 2000-07-12 Herse de tracteur

Country Status (5)

Country Link
JP (1) JP2003505047A (fr)
KR (1) KR200166110Y1 (fr)
CN (1) CN1338895A (fr)
AU (1) AU5854700A (fr)
WO (1) WO2001006831A2 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1889530A1 (fr) * 2006-08-17 2008-02-20 Amazonen-Werke H. Dreyer GmbH & Co. KG Dispositif d'enduit et/ou de pression
JP2015023836A (ja) * 2013-07-26 2015-02-05 小橋工業株式会社 代掻き作業機
CN105850250A (zh) * 2016-04-27 2016-08-17 中国热带农业科学院农业机械研究所 一种智能化后置深松旋耕联合作业机

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5055527B2 (ja) * 2007-06-29 2012-10-24 株式会社ササキコーポレーション 砕土作業機の延長整地体
KR20110006592U (ko) * 2009-12-24 2011-06-30 태호(주) 트랙터용 써래
KR101423669B1 (ko) 2013-05-06 2014-08-01 권혁상 배토기의 보습날 각도 조절장치
CN103238386A (zh) * 2013-05-31 2013-08-14 黑龙江红兴隆机械制造有限公司 液压水田平地装置
FR3013557B1 (fr) * 2013-11-22 2016-01-01 Kuhn Sa Machine agricole, notamment machine pour la recolte de vegetaux, comportant deux unites de travail animees articulees a un meme bras lateral
JP6192223B2 (ja) * 2013-12-25 2017-09-06 松山株式会社 農作業機
CN104145542B (zh) * 2014-07-15 2016-03-09 桐乡市龙翔农机粮油专业合作社 农田平整机
CN104782248B (zh) * 2015-03-27 2017-01-11 安徽省绿福农业科技股份有限公司 一种平田耙
KR101796278B1 (ko) 2016-07-29 2017-11-10 제트스타 주식회사 트랙터용 써레
CN107360740A (zh) * 2017-09-04 2017-11-21 中国科学院西北高原生物研究所 一种工程迹地植被恢复的悬挂式松土装置

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2438370A1 (de) * 1974-08-09 1976-02-19 Becker Karl Masch Bodenbearbeitungsgeraet zur saatbettbereitung
GB2073001A (en) * 1980-02-01 1981-10-14 Grampian Tractors Ltd Harrows
GB2147183A (en) * 1983-09-28 1985-05-09 Eurotec Precision Ltd Agricultural equipment
GB2257343A (en) * 1991-05-30 1993-01-13 Leslie Frederick Field Agricultural implement for soil treatment.
US5862764A (en) * 1997-04-25 1999-01-26 Umemoto; Tosh Method and apparatus for a floating frame field harrow

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2438370A1 (de) * 1974-08-09 1976-02-19 Becker Karl Masch Bodenbearbeitungsgeraet zur saatbettbereitung
GB2073001A (en) * 1980-02-01 1981-10-14 Grampian Tractors Ltd Harrows
GB2147183A (en) * 1983-09-28 1985-05-09 Eurotec Precision Ltd Agricultural equipment
GB2257343A (en) * 1991-05-30 1993-01-13 Leslie Frederick Field Agricultural implement for soil treatment.
US5862764A (en) * 1997-04-25 1999-01-26 Umemoto; Tosh Method and apparatus for a floating frame field harrow

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1889530A1 (fr) * 2006-08-17 2008-02-20 Amazonen-Werke H. Dreyer GmbH & Co. KG Dispositif d'enduit et/ou de pression
JP2015023836A (ja) * 2013-07-26 2015-02-05 小橋工業株式会社 代掻き作業機
CN105850250A (zh) * 2016-04-27 2016-08-17 中国热带农业科学院农业机械研究所 一种智能化后置深松旋耕联合作业机

Also Published As

Publication number Publication date
CN1338895A (zh) 2002-03-06
KR200166110Y1 (ko) 2000-02-15
WO2001006831A3 (fr) 2001-08-23
JP2003505047A (ja) 2003-02-12
AU5854700A (en) 2001-02-13

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