EP1091047A2 - Dispositif et procédé pour creuser des tranchées profondes - Google Patents

Dispositif et procédé pour creuser des tranchées profondes Download PDF

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Publication number
EP1091047A2
EP1091047A2 EP00307606A EP00307606A EP1091047A2 EP 1091047 A2 EP1091047 A2 EP 1091047A2 EP 00307606 A EP00307606 A EP 00307606A EP 00307606 A EP00307606 A EP 00307606A EP 1091047 A2 EP1091047 A2 EP 1091047A2
Authority
EP
European Patent Office
Prior art keywords
underdrainage
excavating
excavator
dirt
slit space
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.)
Granted
Application number
EP00307606A
Other languages
German (de)
English (en)
Other versions
EP1091047A3 (fr
EP1091047B1 (fr
Inventor
Motoji Nishiguchi
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.)
Unit Shoji Ltd YK
Original Assignee
Unit Shoji Ltd YK
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 Unit Shoji Ltd YK filed Critical Unit Shoji Ltd YK
Publication of EP1091047A2 publication Critical patent/EP1091047A2/fr
Publication of EP1091047A3 publication Critical patent/EP1091047A3/fr
Application granted granted Critical
Publication of EP1091047B1 publication Critical patent/EP1091047B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F5/00—Dredgers or soil-shifting machines for special purposes
    • E02F5/02—Dredgers or soil-shifting machines for special purposes for digging trenches or ditches
    • E02F5/06—Dredgers or soil-shifting machines for special purposes for digging trenches or ditches with digging elements mounted on an endless chain
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F5/00—Dredgers or soil-shifting machines for special purposes
    • E02F5/02—Dredgers or soil-shifting machines for special purposes for digging trenches or ditches
    • E02F5/14—Component parts for trench excavators, e.g. indicating devices travelling gear chassis, supports, skids
    • E02F5/145—Component parts for trench excavators, e.g. indicating devices travelling gear chassis, supports, skids control and indicating devices

Definitions

  • the present invention relates to a device for excavating an underdrainage in the ground (that is a subterainian drainage), a system for excavating an underdrainage and a method for excavating an underdrainage and more particularly to a device for positively excavating an underdrainage in the ground, a system therefor and a method therefor by reforming the lower part of a slit space formed by means of excavating buckets to close the intermediate portion of the slit space.
  • Japanese Pat. Appln. Pub. No. 9-60036 discloses a device for excavating an underdrainage comprising an excavator composed of buckets attached to an endless chain, a slit reformer knife member arranged rearwardly of said excavator taken in the direction of excavating work, a pressing member attached to said slit reformer knife member at a vertical intermediate portion thereof, and a casing having a dirt discard opening rearwardly of a top position each bucket takes.
  • Said device for excavating an underdrainage is adapted to discard the excavated dirt into said casing while pressing the vertical intermediate portion of the slit by means of said pressing member to close the slit such that an underdrainage is formed.
  • the upper part of the reformed slit space is filled with the dirt discarded by each bucket at the time of transition from an upward run to a downward run thereof such that the slit is covered to prevent an unnecessary falling of outside dirt thereinto which might lead to a closure of said underdrainage.
  • the underdrainage excavating device of this type has another problem of excavating an underdrainage substantially in parallel with the ground surface, said underdrainage lacking in an incline with the result that surplus water in the ground can stay there to mar the drainage performance.
  • the present invention has an object to provide a device, a system and a method for excavating an underdrainage, which are capable of forming an underdrainage with a good drainage.
  • a device for excavating an underdrainage comprising an underdrainage excavator having an endless chain with excavating buckets attached thereto with a predetermined spacing therebetween; a reformer knife provided rearwardly of said underdrainage excavator taken in the direction of an excavating work to form a slit space; a pressing member attached to said reformer at a vertically intermediate portion thereof to scrape off dirt from both intermediate sides of said slit space and press said scraped off dirt such that said slit space is closed to form an underdrainage in the ground; and a discard section provided rearwardly of said underdrainage excavator taken in the direction of excavating work for scattering the dirt excavated by said excavating buckets over the ground.
  • a device for excavating an underdrainage comprising an underdrainage excavator having an endless chain with excavating buckets attached thereto with a predetermined spacing therebetween; a reformer knife provided rearwardly of said underdrainage excavator taken in the direction of an excavating work to excavate a slit space; and a pressing member attached to said reformer knife at a vertically intermediate portion thereof to scrape off dirt from both intermediate sides of said slit space and press said scraped off dirt such that said slit space is closed to form an underdrainage in the ground, said underdrainage excavator being adapted to be raised and lowered to reform said slit space while being hauled by said tractor such that said pressing member forms an inclined underdrainage.
  • a device for excavating an underdrainage comprising an underdrainage excavator having an endless chain with excavating buckets attached thereto with a predetermined spacing therebetween; a reformer knife provided rearwardly of said underdrainage excavator taken in the direction of an excavating work to excavate a slit space; and a pressing member attached to said reformer at a vertically intermediate portion thereof to scrape off dirt from both intermediate sides of said slit space and press said scraped off dirt such that said slit space is closed to form an underdrainage in the ground; and a tractor having said underdrainage excavator attached thereto and having a lift mechanism to raise and lower said underdrainage excavator; and control means for driving said lift mechanism such that said underdrainage excavator forms an inclined underdrainage in said ground.
  • a method excavating an underdrainage comprising the steps of reforming an excavated space to form a slit space; scraping dirt from both sides of said slit space at a vertically intermediate level; pressing said scraped dirt such that said slit space is closed to form an underdrainage therebelow; and scattering the excavated dirt by means of an excavator over the ground surface.
  • a method for excavating an underdrainage comprising the steps of reforming an excavated space in the ground to form a slit space; scraping off dirt from both sides of said slit space at a vertically intermediate level; and pressing said scraped dirt such that said slit space is closed to form an underdrainage space therebelow; characterized in further including the step of raising and lowering an excavator while said excavator being hauled by a tractor such that said excavator excavates the ground to form an inclined underdrainage
  • a well known crawler type tractor 10 is equipped with an underdrainage excavator 20 actuated by means of a link mechanism composed of an upper link 11, a lower link 12 and a lift link 13; that is, said underdrainage excavator 20 is hauled and controlled through an operation of the upper link 11 and the lower link 12 which respectively act as a three point link.
  • said underdrainage excavator 20 is equipped with a mast 21 supported by said link mechanism, the top of said mast 21 being attached with sprocket wheel 22.
  • Said mast 21 has a guide plate 24A, which will be explained later in detail, extending downward.
  • Said guide plate 24A is attached with a sprocket wheel 23 which forms a pair together with said sprocket wheel 22 such that said sprocket wheels 22 and 23 are driven by way of axles 22A and 23A.
  • An endless chain 24 is passed around said sprocket wheels 22 and 23, excavating pawls 25 are attached to said chain with predetermined spacings therebetween.
  • Said chain 24 is adapted to move along the periphery of a guide plate 24A extending downwardly of said mast 21, said guide plate 24A functioning to prevent the distance between the tense side of the chain 24 and the slack side of the chain 24 from becoming less while providing a support of the sprocket wheel 23.
  • the axle 23A of said sprocket wheel 23 is provided to rotate on the guide plate 24A.
  • Each bucket-like excavating pawl 25 is attached with a predetermined orientation such that each bucket-like excavating pawl 25 running on the tense side performs an excavating work on the ground surface to be excavated by moving from below to above while the bucket-like excavating pawl 25 on the slack side thereof does no work.
  • a drive sprocket 26 to drive the axle 22A of the sprocket wheel 22, said drive sprocket 26 having an axle coaxially with said axle 22A such that a torque is transmitted from the tractor 10 by way of the chain 27 (a drawing of an output sprocket wheel on the tractor side is omitted).
  • the tense side of the chain 24 is driven such that the tense side shows an upward motion while the slack side shows a downward motion.
  • a casing 28 provided rearwardly of the uppermost end of said mast 21, in other words, rearwardly taken in the direction of excavating work, said casing 28 being formed with an opening 28A for discarding the dirt excavated, by means of said excavating pawls 25.
  • Said casing 28 has a shutter 28B for downwardly guiding the dirt discarded from said opening 28A. Therefore, the excavated dirt is discarded through said opening 28A at the time of each bucket-like excavating pawls 25 reversing its motion from the ascending run to the descending run further to be guided downwardly by said shutter 28B.
  • a reformer knife 31 is provided in a plane containing said guide plate 24A provided rearwardly of said mast 21 taken in the direction of the excavating work, said reformer knife 31 being adapted to reform said slit space S formed by said excavating pawl 25. Further, said reformer knife 31 has a pressing member 32 attached at a vertically intermediate portion thereof, said pressing member 32 being adapted to press the dirt scraped off from both sides such that said slit is closed. In other words, said reformer knife 31 having a relatively thin vertically elongate configuration follows the inside of the slit-like space excavated within the ground, said reformer knife 31 being attached with said pressing member 32. As shown in Fig.
  • said pressing member 32 is attached to said knife 31 at a vertically intermediate portion thereof within the ground. Further as shown in Fig. 4 and Fig. 5, said pressing member 32 is shaped like a gate as viewed from behind and like a modified trapezoid in plan view having rearwardly converging sides. Said pressing member 32 is composed of a base plate 32A and side plates 32B bent therefrom at a right angle. Since said base plate is shaped like a modified trapezoid, the space defined by said side plates 32B becomes rearwardly increasingly narrower in the direction of excavating work. Said reformer knife 31 is slightly wider than that of the slit space in the ground while the opening defined between the rearmost ends of said side plates 32B of the presser member 32 is substantially wider than the width of the slit space S.
  • a space forming plate 33 attached to said knife at a lower part thereof and forwardly thereof taken in the direction of the excavating work, said space forming plate 33 being substantially circular such that the space formed by said excavating pawls 25 is enlarged at a lower part thereof.
  • the lowermost end of said space forming plate 33 is positioned at a lowermost level of the locus of the chain 24 such that an excavating pawl 25 is seen protruding downwardly of said space forming plate 33 as viewed from behind in the direction of the excavating work.
  • a scattering section 40 rearwardly of said mast 21 taken in the direction of the excavating work.
  • Said scattering device 40 is equipped with a support member 41 attached to the casing 28, gear box 42 in turn attached to said support member 41 and rotary plate 43 attached to an axle 42A of said gear box 42 to rotate in a horizontal plane.
  • Said gear box 42 has an axle 42B attached with a sprocket wheel 44 while the axle 22A is attached with a sprocket wheel 45.
  • An endless chain 46 is passed around said sprocket wheels 42 and 45 such that the chains 24 and 46 are driven by a drive source on the tractor side.
  • said rotary plate 43 is attached with four vanes 43A extending radially with an equal angular distance therebetween about said axle 42A.
  • the excavated dirt T falls on said rotary plate 43 to be deflected by said vanes 43A to be scattered onto the ground surface.
  • a laser beam receiving section 51 to receive a slope signal L in the form of a laser beam indicating a slope at an angle to a horizontal reference plane is attached by way of a pole 51X to an appropriate portion of the mast 21 at a position due above thereof in side elevation. Then, the underdrainage excavating device 20 is controlled to be raised or lowered by the output from the tractor such that the laser beam receiving section 51 is to stay in a laser beam plane.
  • Said lift cylinder 16 is controlled by slope signal L from the laser emitting section 53 to expand and contract by being driven by a hydraulic pressure from a hydraulic pump 56 equipped in the tractor 10 by way of a selector switch 55 and a flow rate control valve 57.
  • the slope signal L received by the laser receiving section 51 is input into a control circuit 54 having a controlling microcomputer such that said selector valve 55 is select controlled on the basis of the control signal output from said control circuit 54 to control the valve opening area of said flow rate control valve 57.
  • the laser emitting section 53 is located at an appropriate position away from the field being worked on and is adapted to rotate in a plane at an angle to a horizontal reference plane while emitting a laser beam to draw an imaginary inclined laser beam plane in the air.
  • the device 20 for excavating an underdrainage attached to the tractor 10 is lowered by operating a lift mechanism of the tractor 10 before the tractor 10 is run while supplying a driving force to the axle 22A of the sprocket wheel 22 by way of the sprocket wheel 26.
  • the excavating pawls 25 may not stick into the earth but, as the tractor 10 proceeds, the excavating pawls 25 start to stick into the ground to pierce thereinto while excavating the ground down to the predetermined depth.
  • the excavated dirt is carried by the excavating pawls 25 in the upward run thereof before, as said excavating pawls 25 changes its course from the upward run to the downward run, the dirt carried by the excavating pawls 25 is discarded downward by way of discard opening 28A in the casing 28 by the shutter 28B. Thereafter, the vane 43A provided on the rotary plate 43 deflects the dirt falling onto the rotary plate 43 to be scattered over the ground. Substantially along the excavating work line in the field, a slit space S is formed as shown in Fig. 11 by means of said buckets-like excavating pawls 25.
  • the peat bog dirt at the mid-depth of the slit S of 70 cm from the ground surface is scraped off from both sides of the slit space S and pressed by the pressing member 32 after the passage of the tractor 10 to provide a blockage in the form of a crossbeam in said slit space S.
  • the lift cylinder 16 shown in Fig. 10 receives the slope signal L issued from the laser emitting section 53 for the controlling purpose.
  • the lift cylinder 16 is adapted to be extended and contracted such that the laser beam receiving section 51 always stays in the inclined laser beam plane defined by the inclined plane signal L, thus controlling the vertical position of the underdrainage excavating device 20.
  • the underdrainage excavating device 20 is capable of excavating an inclined underdrainage space by ensuring that the laser beam receiving section 51 is kept within said plane defined by inclined plane signal L because the underdrainage excavating device 20 performs an operation in a predetermined inclined plane.
  • the control signal from the control circuit (control box) 54 for the lift mechanism is issued to switch the hydraulic circuit.
  • the control circuit (control box) 54 issues a control signal, in accordance with which the hydraulic circuit is switched. In other words, to ensure that the inclined plane signal L is received, a signal to instruct that the laser beam receiving section 51 be lowered is issued such that the selector valve 55 is switched over to extend the lift cylinder 16.
  • the pressure oil is pressed toward the direction to control the orientation of the underdrainage excavating device 20 such that the forward end thereof is lowered by actuating the rod 16A of the lift cylinder 16 into the direction to extend the same.
  • the lift arm 15 is rotated to press the lift rod 13 to lower the lower link 12 until the laser beam receiving section 51 is lowered down to the level to receive the inclined plane signal L where the forward end of the underdrainage excavating device 20 is positioned to do the desired excavating work.
  • the extent of deviation of the laser beam receiving section 51 off the inclined plane is calculated at the control box (control circuit) such that the amount of correction is determined.
  • a signal corresponding to the correction is input into the hydraulic circuit of the lift mechanism equipped in the tractor 10 to control and drive the lower link 12 by way of the lift rod 13.
  • the orientation of the underdrainage excavating device 20 is controlled such that the laser beam receiving section 51 is located in the inclined plane referred to in the foregoing.
  • the underdrainage having a slope (inclination of ) is excavated in the ground as shown in Fig. 14.
  • the underdrainage excavator scatters the excavated dirt over an extended area of the ground surface to prevent the excavated dirt from accumulating in the form of mounds in a localized area along the slit space to cover the grass or pasture while part of the excavated dirt is filled into the upper part of the slit space, thus preventing an entry of any dirt from outside.
  • the excavating device of the invention is controlled to change its level in accordance with a inclined reference plane while being drawn by a tractor to ensure that the device excavates the ground to form an inclined underdrainage which shows excellent drainage performance.

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  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Soil Working Implements (AREA)
  • Catching Or Destruction (AREA)
EP20000307606 1999-10-06 2000-09-04 Dispositif et procédé pour creuser des tranchées profondes Expired - Lifetime EP1091047B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9923634A GB2355031B (en) 1999-10-06 1999-10-06 Device and method for excavating underdrainage
GB9923634 1999-10-06

Publications (3)

Publication Number Publication Date
EP1091047A2 true EP1091047A2 (fr) 2001-04-11
EP1091047A3 EP1091047A3 (fr) 2002-01-30
EP1091047B1 EP1091047B1 (fr) 2005-03-30

Family

ID=10862227

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20000307606 Expired - Lifetime EP1091047B1 (fr) 1999-10-06 2000-09-04 Dispositif et procédé pour creuser des tranchées profondes

Country Status (3)

Country Link
EP (1) EP1091047B1 (fr)
JP (1) JP4615688B2 (fr)
GB (2) GB2391032B (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2571468C1 (ru) * 2014-09-10 2015-12-20 Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Сибирская государственная автомобильно-дорожная академия (СибАДИ)" Способ измерения силы внедрения ковша в рабочую среду и устройство для его осуществления

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5580265B2 (ja) * 2011-09-05 2014-08-27 有限会社インタードレーン・ジャパン 移動式暗渠排水管埋設装置
JP7072837B2 (ja) * 2018-01-23 2022-05-23 株式会社ナラ工業 無材暗渠形成工法および無材暗渠形成用作業機
CN108265768B (zh) * 2018-03-21 2023-02-14 中国五冶集团有限公司 一种基于人工顶管的渣土挖掘及转运系统
CN109653266B (zh) * 2019-01-25 2020-12-01 韩璇卿 一种耙斗链式成槽机

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3011278A (en) * 1960-12-14 1961-12-05 Lust Farms Mechanical earth mole
US3201948A (en) * 1961-05-04 1965-08-24 Arthur G Schramm Trenching and cable laying machine
FR2125811A5 (fr) * 1971-02-16 1972-09-29 Clement Paul
US4034490A (en) * 1975-11-03 1977-07-12 Laserplane Corporation Automatic depth control for endless chain type trencher
EP0214416A1 (fr) * 1985-09-05 1987-03-18 Erich Wintjen Dispositif de nivellement pour une machine de drainage ou analogue
JPH0960036A (ja) * 1995-08-22 1997-03-04 Unit Shoji:Kk 暗渠形成装置
US5930923A (en) * 1996-12-26 1999-08-03 Yugenkaisha Unit Shoji Limited Method for operation to excavate underdrain in the field ground and a device for operation to excavate underdrain
JPH11225524A (ja) * 1998-02-18 1999-08-24 Takakita Co Ltd 対向回転円板式の肥料散布機

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Publication number Priority date Publication date Assignee Title
US4221505A (en) * 1978-03-17 1980-09-09 Taylor Smith Ernest J Sub-surface irrigation channel
JPS5552432A (en) * 1978-10-12 1980-04-16 Torenchiyaa Giken Kk Method of and device for excavating oblique groove by trencher
GB2159192B (en) * 1984-05-24 1987-09-16 Arthur Jones A trenching method and apparatus
JPH06248630A (ja) * 1993-03-02 1994-09-06 Tsuneo Onodera トレンチャー掘削装置
GB9323298D0 (en) * 1993-11-11 1994-01-05 Mastenbroek & Co Ltd J Improvements in and relating to excavating apparatus
US5765966A (en) * 1996-10-01 1998-06-16 White; Thomas B. Sub-surface trenching and backfill apparatus

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3011278A (en) * 1960-12-14 1961-12-05 Lust Farms Mechanical earth mole
US3201948A (en) * 1961-05-04 1965-08-24 Arthur G Schramm Trenching and cable laying machine
FR2125811A5 (fr) * 1971-02-16 1972-09-29 Clement Paul
US4034490A (en) * 1975-11-03 1977-07-12 Laserplane Corporation Automatic depth control for endless chain type trencher
EP0214416A1 (fr) * 1985-09-05 1987-03-18 Erich Wintjen Dispositif de nivellement pour une machine de drainage ou analogue
JPH0960036A (ja) * 1995-08-22 1997-03-04 Unit Shoji:Kk 暗渠形成装置
US5930923A (en) * 1996-12-26 1999-08-03 Yugenkaisha Unit Shoji Limited Method for operation to excavate underdrain in the field ground and a device for operation to excavate underdrain
JPH11225524A (ja) * 1998-02-18 1999-08-24 Takakita Co Ltd 対向回転円板式の肥料散布機

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 1997, no. 07, 31 July 1997 (1997-07-31) -& JP 09 060036 A (UNIT SHOJI:KK), 4 March 1997 (1997-03-04) *
PATENT ABSTRACTS OF JAPAN vol. 1999, no. 13, 30 November 1999 (1999-11-30) -& JP 11 225524 A (TAKAKITA CO LTD), 24 August 1999 (1999-08-24) *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2571468C1 (ru) * 2014-09-10 2015-12-20 Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Сибирская государственная автомобильно-дорожная академия (СибАДИ)" Способ измерения силы внедрения ковша в рабочую среду и устройство для его осуществления

Also Published As

Publication number Publication date
EP1091047A3 (fr) 2002-01-30
JP4615688B2 (ja) 2011-01-19
GB0324884D0 (en) 2003-11-26
GB9923634D0 (en) 1999-12-08
JP2001107346A (ja) 2001-04-17
GB2391032A (en) 2004-01-28
GB2355031A (en) 2001-04-11
GB2355031B (en) 2004-04-07
EP1091047B1 (fr) 2005-03-30
GB2391032B (en) 2004-03-31

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