US20130202397A1 - Tractor installed rotatable arm - Google Patents

Tractor installed rotatable arm Download PDF

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Publication number
US20130202397A1
US20130202397A1 US13/877,654 US201113877654A US2013202397A1 US 20130202397 A1 US20130202397 A1 US 20130202397A1 US 201113877654 A US201113877654 A US 201113877654A US 2013202397 A1 US2013202397 A1 US 2013202397A1
Authority
US
United States
Prior art keywords
arm
tractor
rotating shaft
articulated arm
rotatable
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.)
Abandoned
Application number
US13/877,654
Other languages
English (en)
Inventor
Joong-Ho Kim
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Daeho Co Ltd
Original Assignee
Daeho 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
Application filed by Daeho Co Ltd filed Critical Daeho Co Ltd
Assigned to DAEHO CO., LTD. reassignment DAEHO CO., LTD. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: KIM, JOONG-HO
Publication of US20130202397A1 publication Critical patent/US20130202397A1/en
Abandoned legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
    • E02F3/30—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets with a dipper-arm pivoted on a cantilever beam, i.e. boom
    • E02F3/32—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets with a dipper-arm pivoted on a cantilever beam, i.e. boom working downwardly and towards the machine, e.g. with backhoes
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
    • E02F3/30—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets with a dipper-arm pivoted on a cantilever beam, i.e. boom
    • E02F3/301—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets with a dipper-arm pivoted on a cantilever beam, i.e. boom with more than two arms (boom included), e.g. two-part boom with additional dipper-arm
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
    • E02F3/36—Component parts
    • E02F3/38—Cantilever beams, i.e. booms;, e.g. manufacturing processes, forms, geometry or materials used for booms; Dipper-arms, e.g. manufacturing processes, forms, geometry or materials used for dipper-arms; Bucket-arms
    • E02F3/382—Connections to the frame; Supports for booms or arms
    • E02F3/384—Connections to the frame; Supports for booms or arms the boom being pivotable relative to the frame about a vertical axis
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
    • E02F3/36—Component parts
    • E02F3/42—Drives for dippers, buckets, dipper-arms or bucket-arms
    • E02F3/425—Drive systems for dipper-arms, backhoes or the like

Definitions

  • the present invention relates, in general, to tractors with rotatable articulated arms and, more particularly, to a tractor with a rotatable articulated arm in which a rotating shaft is installed around a driver cab of the tractor, and the articulated arm is coupled to the rotating shaft so that the articulated arm can rotate around the rotating shaft within as large an angular range as possible, whereby an operating radius and working efficiency of an operating implement mounted to an end of the articulated arm can be markedly improved.
  • a tractor is an engineering vehicle designed to deliver a high tractive force and conduct different kinds of work in the agriculture or construction field.
  • tractors for agriculture typically include a front loader provided on a front end of a tractor body, and an attachment mounted to the front loader so as to conduct various kinds of work, such as transportation, unloading, loading, etc.
  • a workable area of the tractor is limited to an area either in front of or to the rear of the tractor. Therefore, if it is required to perform work in an area located to either side of the driver cab, the tractor must be rotated in a direction corresponding to the target area. This makes the work complicated and increases the time required to conduct the work.
  • an object of the present invention is to provide a tractor with a rotatable articulated arm in which a rotating shaft is installed around a driver cab of the tractor, and the articulated arm is coupled to the rotating shaft so that the articulated arm can rotate around the rotating shaft within as large an angular range as possible, whereby an operating radius and working efficiency of an operating implement mounted to an end of the articulated arm can be markedly improved.
  • the present invention provides a tractor with a rotatable articulated arm, wherein a driver cab is provided with a driver seat and disposed on a body frame at a position displaced to one side from a central portion of the body frame, a rotating shaft is installed around the driver cab, and the articulated arm is installed on the rotating shaft so that the articulated arm can rotate around the rotating shaft.
  • the articulated arm may include: a rotating boom coupled to the rotating shaft; a first arm hinged to the rotating boom and vertically bent by a first hydraulic cylinder; a second arm hinged to the first arm and vertically bent by a second hydraulic cylinder, with an attachment provided on an end of the second arm.
  • the present invention provides a tractor with a rotatable articulated arm, wherein a rotating shaft is installed around a driver cab, and the articulated arm is coupled to the rotating shaft so that the articulated arm can rotate around the rotating shaft, the articulated arm including: a rotating boom coupled to the rotating shaft; a first arm hinged to the rotating boom and vertically bent by a first hydraulic cylinder; a second arm hinged to the first arm and vertically bent by a second hydraulic cylinder, wherein the first arm and the second arm are folded, the first arm and the second arm form a Z shape along with the rotating boom.
  • a bucket may be mounted to the end of the second arm.
  • the rotating boom may be curved in an arc shape.
  • the first arm and the second arm When the first arm and the second arm are completely folded, the first arm and the second arm may be in space defined between four wheels of the tractor.
  • the first arm and the second arm may be configured such that when the first arm and the second arm are folded, the first and second hydraulic cylinders are respectively inserted into the first arm and the second arm.
  • the rotating shaft may be provided with a sprocket, and a chain may be coupled to the sprocket, the chain being connected to first ends of operating rods of a pair of third hydraulic cylinders, so that the rotating shaft is rotated by extension and contraction of the third hydraulic cylinders.
  • the sprocket and the chain coupled to the sprocket may form at least a double sprocket-chain structure.
  • Each of the third hydraulic cylinder may include a damping bushing provided on a second end of the operating rod, and a damping chamber formed in an end of the third hydraulic cylinder, the damping chamber forming a space into which the damping bushing is inserted, wherein the space has a size at which a fine gap is formed when the damping bushing is inserted into the damping chamber.
  • the rotating shaft may be disposed adjacent to a rear end of a side surface of the driver cab, so that the rotating boom can rotate around the rotating shaft within an angular range of 270°.
  • the rotating shaft may be fastened to the body frame or a rear axle.
  • a rotating shaft is installed around a driver cab of the tractor, and the articulated arm is coupled to the rotating shaft so that the articulated arm can rotate around the rotating shaft within as large an angular range as possible (within an angular range of about 270° in the case where the driver cab is disposed on a rear end of a side portion of the tractor body).
  • an operating radius and working efficiency of an operating implement mounted to an end of the articulated arm can be markedly improved.
  • the rotating shaft is disposed around a rear end of a side surface of the driver cab. Therefore, the articulated arm installation structure of the present invention can reduce the whole length of the tractor.
  • the articulated arm according to the present invention includes an arc-shaped curved rotating boom and two arms (a first arm and a second arm), thus making it possible for the tractor to conduct work even in a small place.
  • the tractor of the present invention can be used in a variety of work environments.
  • FIG. 1 is a perspective view illustrating a tractor with a rotatable articulated arm, according to the present invention
  • FIG. 2 is a bottom view illustrating the tractor with the rotatable articulated arm according to the present invention
  • FIG. 3 is a view showing in detail the construction of a rotating shaft according to the present invention.
  • FIG. 4 is a side view of the tractor when the articulated arm is oriented forwards according to the present invention.
  • FIG. 5 is a side view of the tractor when the articulated arm is oriented rearwards according to the present invention.
  • FIG. 6 is a side view of the tractor to illustrate an operating radius of the articulated arm when it is oriented rearwards according to the present invention.
  • FIG. 7 is a side view of the tractor to illustrate that it is possible for the tractor to carry out work even when it is in a small space after the articulated arm has been oriented rearwards.
  • driver cab 21 front wheel
  • a driver cab 10 having a driver seat therein is located on a left side portion of a body of the tractor, and the rotatable articulated arm 30 is disposed on a portion of the tractor body where the driver cab 10 is not located, so as to keep the balance of the tractor body.
  • the driver cab 10 is disposed between front wheels 21 and rear wheels 22 of the tractor and located on the left side portion of the tractor body such that space is formed beside the driver cab 10 .
  • the articulated arm 30 is maintained in a folded state in this space.
  • a rotating shaft 40 is rotatably provided beside a rear end of a side surface of the driver cab 10 , in other words, at a position adjacent to one corner of the driver cab 10 .
  • the articulated arm 30 is provided on the rotating shaft 40 so that the articulated arm 30 can be rotated around the rotating shaft 40 by rotation of the rotating shaft 40 .
  • the location of the rotating shaft 40 is not limited to the vicinity of the rear end of the side surface of the driver cab 10 , and it can be disposed at any position, so long as it is adjacent to the driver cab 10 .
  • the articulated arm 30 includes a rotating boom 31 which is coupled to the rotating shaft 40 , a first arm 32 which is hinged to the rotating boom 31 and is vertically folded or unfolded by a hydraulic cylinder 32 a, and a second arm 33 which is hinged to the first arm 32 and is vertically folded or unfolded by a hydraulic cylinder 33 a.
  • An attachment is provided on an end of the second arm 33 .
  • the first arm 32 and the second arm 33 respectively have spaces therein so that, when the first arm 32 and the second arm are folded, the hydraulic cylinder 32 a and the hydraulic cylinder 33 a which operate the first and second arms 32 and 33 are respectively inserted into the spaces of the first and second arms 32 and 33 . Thanks to this structure, interference with the hydraulic cylinder 32 a or 33 a can be minimized, whereby the first arm 32 and the second arm 33 can be folded to the greatest extent.
  • the articulated arm 30 which includes the rotating boom 31 , the first arm 32 and the second arm 33 has the Z-shaped structure, when the articulated arm 30 is not in operation, it can be stably maintained in the folded state in the space formed beside the driver cab 10 . Therefore, when the tractor moves, it can move smoothly and without instability.
  • the tractor is configured such that, when the first arm 32 and the second arm 33 are folded to the greatest extent, the first and second arms 32 and 33 are in space defined between the front and rear wheels of the tractor. Thereby, when the tractor travels, the first and second arms 32 and 33 can be maintained in a more stable state.
  • the rotating boom 31 which is coupled to the rotating shaft 40 is configured to be curved in an arc shape. Hence, after the articulated arm has been rotated rearwards, that is, towards the rear wheels 22 , by rotation of the rotating shaft 40 , it becomes possible to conduct work using the articulated arm, even in a small space, without interference with the rear wheels 22 .
  • the articulated arm 30 when the articulated arm 30 is being rotated by the rotation of the rotating shaft 40 , except for the driver cab 10 which is disposed on the left portion of the tractor body, nothing impedes the rotation of the articulated arm 30 . Therefore, the articulated arm 30 can easily rotate around the rotating shaft 40 within an angular range other than an angular range within which it would interfere with the driver cab 10 . In the case where the driver cab 10 is disposed in a rear end of the left side portion of the tractor, if the angular range within which the driver cab 10 impedes the rotation of the articulated arm 30 is excluded, the articulated arm 30 can rotate within an angular range of about 270° (from a range of about 260° to a range of about 290°).
  • the rotating shaft 40 is installed in a frame box 60 provided in a rear end of a body frame, it may be installed on a rear axle.
  • a plurality of bearings 62 and 63 are provided around the rotating shaft 40 so that it can smoothly rotate.
  • a bearing box 61 which houses the bearing 62 therein is installed in the frame box 60 .
  • a sprocket 41 is provided around a circumferential outer surface of the rotating shaft 40 .
  • a chain 42 is wrapped around the sprocket 41 .
  • Opposite ends of the chain 42 are respectively coupled to outer ends of operating rods 51 of two hydraulic cylinders 50 .
  • the rotating shaft 40 can be rotated by extension and contraction of the hydraulic cylinders 50 .
  • a triple sprocket-chain structure having three sprockets 41 and three chains 42 is illustrated as being used to increase rotating force of the articulated arm 30 coupled to the rotating shaft 40 .
  • a double sprocket-chain structure comprising at least two sprockets and two chains is used.
  • Each hydraulic cylinder 50 includes a damping structure to prevent the rotating shaft 40 from excessively rapidly rotating.
  • the damping structure of the hydraulic cylinder 50 includes a damping bushing 52 which is provided on an inner end of the operating rod 51 , and a damping chamber 53 which is formed in an end of the hydraulic cylinder and forms a space into which the damping bushing 52 is inserted.
  • the damping structure is configured such that, when the operating rod 51 is completely extended and the damping busing 52 is thus inserted into the damping chamber 53 , a narrow gap is formed and operating oil of the hydraulic cylinder 50 comes out towards a fluid passage 54 through the narrow gap. At this time, the expansion or contraction speed of the hydraulic cylinder 50 is reduced. In this way, the damping function can be conducted.
  • the attachment is provided on the end of the articulated arm 30 so that an operating implement such as a bucket, a bale clamp, a fork lift, a hook, etc. can be easily and removably mounted to the articulated arm 30 .
  • an operating implement such as a bucket, a bale clamp, a fork lift, a hook, etc.
  • a small bucket 80 is provided on the end of the articulated arm 30 .
  • the articulated arm 30 assumes the position of FIG. 4 .
  • the operating implement for example, a bucket
  • the bucket 80 is moved forwards by folding or unfolding the first and second arms 32 and 33 of the articulated arm 30 , and the orientation of the bucket 80 is adjusted by controlling the hydraulic cylinder 70 provided in the second arm 33 .
  • the rotating shaft 40 is rotated such that the articulated arm 30 is oriented in the lateral direction of the tractor.
  • the rotating shaft 40 is rotated such that the articulated arm 30 is oriented rearwards.
  • the driver seat (not shown) provided in the driver cab 10 has a rotatable structure. Therefore, after the driver seat has been rotated rearwards, the driver in the seat can easily operate the articulated arm 30 without turning his/her head.
  • the articulated arm 30 includes the rotating boom 31 coupled to the rotating shaft 40 , and the first and second arms 32 and 33 which are hinged to the rotating boom 31 and are respectively operated by the hydraulic cylinders 32 a and 33 a, the operating radius of the articulated arm 30 can be increased, as shown in FIG. 6 , showing the case where the first arm 32 and the second arm 33 are extended.
  • the rotating boom 31 of the articulated arm 30 has the arc-shaped curved structure, as shown in FIG. 7 , it can conduct work even in a small space without being impeded by the rear wheels 22 .
  • the articulated arm 30 can rotate within an angular range of about 270°.
  • the operating radius of the operating implement mounted to the end of the articulated arm 30 can be further increased. Thereby, operation efficiency of the tractor can be markedly enhanced.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Agricultural Machines (AREA)
  • Body Structure For Vehicles (AREA)
  • Jib Cranes (AREA)
US13/877,654 2010-10-11 2011-05-24 Tractor installed rotatable arm Abandoned US20130202397A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
KR1020100098566A KR101042182B1 (ko) 2010-10-11 2010-10-11 선회 가능한 굴절 아암이 설치된 트랙터
KR10-2010-0098566 2010-10-11
PCT/KR2011/003779 WO2012050283A1 (ko) 2010-10-11 2011-05-24 선회 가능한 굴절 아암이 설치된 트랙터

Publications (1)

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US20130202397A1 true US20130202397A1 (en) 2013-08-08

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ID=44405698

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Application Number Title Priority Date Filing Date
US13/877,654 Abandoned US20130202397A1 (en) 2010-10-11 2011-05-24 Tractor installed rotatable arm

Country Status (6)

Country Link
US (1) US20130202397A1 (zh)
EP (1) EP2628856A1 (zh)
JP (1) JP5593450B2 (zh)
KR (1) KR101042182B1 (zh)
CN (2) CN103154384B (zh)
WO (1) WO2012050283A1 (zh)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101371329B1 (ko) * 2012-05-30 2014-03-11 대호 (주) 트랙터 안전구조
KR101545337B1 (ko) 2015-03-09 2015-08-19 이희재 굴삭기 붐의 좌우 회전장치
KR101597976B1 (ko) 2015-09-09 2016-03-03 대한민국 트랙터 부착식 원목 집재 장치

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3099358A (en) * 1960-08-01 1963-07-30 Int Harvester Co Means for shifting the axis of boom means or the like
US3216589A (en) * 1963-04-08 1965-11-09 Walker Matthew Paton Soil excavating apparatus
US3466770A (en) * 1966-09-16 1969-09-16 Frank W Morrison Self-propelled earth excavating and leveling apparatus
US4049139A (en) * 1976-02-25 1977-09-20 Caterpillar Tractor Co. Backhoe with multi-movement capabilities
US4378193A (en) * 1977-12-24 1983-03-29 Hans Schaeff Mobile shovel excavator
US4746264A (en) * 1983-02-12 1988-05-24 Kabushiki Kaisha Hikoma Seisakusho Earth-working machine
US5088020A (en) * 1988-11-18 1992-02-11 Kubota Ltd. Pivotal movement control device for boom-equipped working machine
US5195863A (en) * 1982-09-08 1993-03-23 Pingon Pierre J De Excavator loader

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5812923Y2 (ja) * 1976-01-21 1983-03-12 株式会社クボタ 土工用作業車
JPS5712463U (zh) * 1980-06-20 1982-01-22
KR200161771Y1 (ko) * 1996-06-05 1999-12-01 권태근 트랙터용 굴삭기의 붐회전장치
KR100232366B1 (ko) 1996-06-12 1999-12-01 권태근 트랙터용 굴삭기의 이동장치
US6459902B1 (en) * 1999-09-07 2002-10-01 Qualcomm Incorporated System and method for selectively blocking or dropping calls in a telecommunications network
CN2396105Y (zh) * 1999-11-17 2000-09-13 贵州詹阳机械工业有限公司 挖掘机用的三节臂折叠式工作装置
KR200227627Y1 (ko) * 2001-01-06 2001-06-15 조동현 굴삭장치가 부설된 농업용 운반차
KR100678515B1 (ko) 2005-11-29 2007-02-02 류순호 트랙터의 견인 구동구조
CN201137166Y (zh) * 2007-11-13 2008-10-22 石明祥 铲车大臂旋转装置
CN101280569B (zh) * 2008-05-23 2011-01-19 同济大学 步履伸缩臂式遥控挖机

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3099358A (en) * 1960-08-01 1963-07-30 Int Harvester Co Means for shifting the axis of boom means or the like
US3216589A (en) * 1963-04-08 1965-11-09 Walker Matthew Paton Soil excavating apparatus
US3466770A (en) * 1966-09-16 1969-09-16 Frank W Morrison Self-propelled earth excavating and leveling apparatus
US4049139A (en) * 1976-02-25 1977-09-20 Caterpillar Tractor Co. Backhoe with multi-movement capabilities
US4122959A (en) * 1976-02-25 1978-10-31 Caterpillar Tractor Co. Backhoe with multi-movement capabilities
US4378193A (en) * 1977-12-24 1983-03-29 Hans Schaeff Mobile shovel excavator
US5195863A (en) * 1982-09-08 1993-03-23 Pingon Pierre J De Excavator loader
US4746264A (en) * 1983-02-12 1988-05-24 Kabushiki Kaisha Hikoma Seisakusho Earth-working machine
US5088020A (en) * 1988-11-18 1992-02-11 Kubota Ltd. Pivotal movement control device for boom-equipped working machine

Also Published As

Publication number Publication date
CN104499517A (zh) 2015-04-08
CN104499517B (zh) 2017-01-11
WO2012050283A1 (ko) 2012-04-19
EP2628856A1 (en) 2013-08-21
CN103154384B (zh) 2015-04-29
JP2013538962A (ja) 2013-10-17
CN103154384A (zh) 2013-06-12
JP5593450B2 (ja) 2014-09-24
KR101042182B1 (ko) 2011-06-16

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AS Assignment

Owner name: DAEHO CO., LTD., KOREA, REPUBLIC OF

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:KIM, JOONG-HO;REEL/FRAME:030187/0253

Effective date: 20130322

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION