EP1753922A1 - Pelle excavatrice et son utilisation dans un procede de creusage - Google Patents

Pelle excavatrice et son utilisation dans un procede de creusage

Info

Publication number
EP1753922A1
EP1753922A1 EP05744554A EP05744554A EP1753922A1 EP 1753922 A1 EP1753922 A1 EP 1753922A1 EP 05744554 A EP05744554 A EP 05744554A EP 05744554 A EP05744554 A EP 05744554A EP 1753922 A1 EP1753922 A1 EP 1753922A1
Authority
EP
European Patent Office
Prior art keywords
excavating bucket
trench
edge
digging
rotational axis
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.)
Withdrawn
Application number
EP05744554A
Other languages
German (de)
English (en)
Inventor
Wilhelmus Maria Hoevenaars
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.)
Koninklijke KPN NV
Original Assignee
Koninklijke KPN NV
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 Koninklijke KPN NV filed Critical Koninklijke KPN NV
Publication of EP1753922A1 publication Critical patent/EP1753922A1/fr
Withdrawn legal-status Critical Current

Links

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
    • E02F5/025—Dredgers or soil-shifting machines for special purposes for digging trenches or ditches with scraper-buckets, dippers or shovels
    • 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
    • E02F3/40—Dippers; Buckets ; Grab devices, e.g. manufacturing processes for buckets, form, geometry or material of buckets

Definitions

  • the invention relates to an excavating bucket comprising a main plate and a connector, the connector being arranged to connect the excavating bucket to an excavator, the excavating bucket being arranged for performing a digging movement, the digging movement comprising a rotational movement about a rotational axis.
  • the invention further relates to a method for digging using such an excavating bucket.
  • a relatively deep trench is dug, for instance with a depth of approximately 1,2 metres.
  • the heavier pipelines are placed, such as for instance pipes for the water supply.
  • cables for electricity and pipes for gas supply are placed. These may for instance be positioned at a depth of approximately 0,8 metres.
  • the trench is further filled with soil until it has a depth of approximately 0,6 metres.
  • telecommunication cables may be placed.
  • the trench is closed. As a result of this procedure, all cables are placed in the trench at different levels and the trench can be closed.
  • the process described above is a time consuming process. A relatively large amount of soil has to be moved, which takes time and is thus relatively expensive.
  • the trench can not be closed at once, but is closed in steps.
  • the equipment for digging i.e. the excavator or trencher, needs to be moved to each position along the trench four times : once for digging the trench and three times for closing the trench in steps. This makes the procedure described above relatively time consuming.
  • the invention provides a system as defined in the outset, characterized in that the main plate is formed by at least a first and a second portion having a first and second front edge, where a first distance between the first edge to the rotational axis substantially differs from a second distance of the second edge to the rotational axis.
  • the term substantially as used here means that the first and second part of the trench can be used to lay cables and/or pipes at different levels in the soil.
  • the rotational axis may run through the connector.
  • the first and second portion of the main plate can have different curvatures.
  • the first distance of the first edge to the rotational axis and the second distance of the second edge to the rotational axis can differ with at least 0,05 metre. It will be understood that the difference between the first and second distance could have any suitable value, depending on the shape of the trench that needs to be dug.
  • the excavating bucket can further comprise a third portion having a third front edge, where the distance between the third front edge to the rotational axis substantially differs from the distance between at least the first or second edge to the rotational axis.
  • the excavating bucket can further comprise at least one intermediate plate having an intermediate edges being provided in between the first, second portion.
  • at least one connection between a front edge and an intermediate edge is provided by a rounded corner. This has the advantage that the soil of the digged trench will collaps less easily.
  • a method for digging a layered trench using an excavating bucket according the the invention is disclosed.
  • This method has the advantage that different cables and pipes can be placed on the different layers of the trench, without the need of digging various trenches .
  • FIG. 1 schematically depicts an excavating bucket according to the prior art
  • Fig. 2 schematically depicts an excavator according to the prior art
  • Fig. 3 schematically depicts a perspective view of an excavating bucket according to an embodiment of the invention
  • Fig. 4 schematically depicts a cross-sectional view of an excavating bucket according to an embodiment of the invention.
  • Fig. 5 schematically depicts a cross-sectional view of an excavating bucket according to an alternative embodiment of the invention.
  • Fig. 1 shows an excavating bucket 1 according to the prior art.
  • the excavating bucket 1 as shown in Fig. 1 comprises a connector 2, arranged for connecting the excavating bucket 1 to an excavator or trench digger 10, schematically shown in Fig. 2.
  • the excavator 10 is provided with a moveable arm 11 arranged for connection to the connector 2 of the excavating bucket 1.
  • the moveable arm 11 can be moved by the excavator 10 in such a way that a hole or trench can be dug in soil 20.
  • the excavating bucket 1 is connected to the moveable arm 11 of the excavator 10 in such a way, that the excavating bucket 1 can perform digging movements.
  • These digging movements may comprise a rotation about a rotational axis R, as indicated in Fig. 1.
  • the rotational axis R may run through the connector 2, as shown in figures 1 and 2.
  • the excavating bucket 1 may also be in a fixed position with respect to the moveable arm 11, in which case the rotational axis R is positioned at another location, for instance, in the moveable arm 11, as will be understood by a skilled person.
  • the excavator bucket 1 comprises two side plates 7, 8 and one main plate 9, provided in between the side plates 7, 8.
  • main plate 9 is a curved plate.
  • the three plates 7, 8, 9 define an interior space of the excavating bucket 1.
  • the interior space of the excavating bucket 1 has an opening that is defined by four edges 3, 4, 5, 6.
  • Two side edges 4, 5 are substantially parallel with respect to each other and form an edge of the first, respectively second side plate 7, 8.
  • the two further edges, front edge 6 and back edge 3 form edges of the main plate 9.
  • the excavating bucket 1 When digging a trench, the excavating bucket 1 is moved to the surface of the soil 20 and the front edge 6 will be the first part of the excavating bucket 1 that comes in contact with the soil 20. The front edge 6 is then pushed in the soil 20 by making a suitable movement of the excavating bucket 1. This suitable movement may comprise a rotation about the rotational axis R.
  • the front edge 6 may be provided with teeth (not shown) .
  • teeth not shown
  • the interior space of the excavating bucket 1 is filled with soil that can be transported away, such that a hole or trench is formed in the soil 20. It will be understood that the maximum depth of the hole that can be created by one digging movement of the excavating bucket 1 is limited by the distance between the front edge 6 and the back edge 3.
  • Fig. 3 shows an excavating bucket 100 according to an embodiment of the invention.
  • the excavating bucket 100 comprises a connector 102, arranged for connecting the excavating bucket 100 to an excavator or a trencher 10. Similar to the excavating bucket 1 described with respect to Fig. 1, the excavating bucket 100 comprises a plurality of plates and edges, that define an interior space of the excavating bucket 100.
  • a rotational axis R is provided that runs through the connector 102. It will however be understood that the rotational axis R may also be positioned somewhere else, for instance, somewhere along the moveable arm of the excavator 10.
  • the excavating bucket 100 comprises two side plates 107, 108 and two side edges 104, 105 that form the edge of the two side plates 107, 108 respectively.
  • the excavating bucket 100 further comprises a back edge 103, similar to Fig. 1.
  • the main plate of the excavating bucket 100 is divided in a first, second and third portion 111, 112, 113, that each extend between the back edge 103 and a first, second and a third front edge 121, 122, 123 respectively.
  • the first, second and third portions 111, 112, 113 are bended plates, but each portion has a different curvature.
  • intermediate plates 114, 115 are provided, having intermediate edges 131, 132 respectively. These intermediate edges 131, 132 are preferably parallel to the side edges 104, 105.
  • Fig. 3 clearly shows that in this case, the difference in distance could also be defined by comparing the distance between the first, second and third front edge 121, 122, 123 to the back edge 103, or the connector 102.
  • a trench 200 When a trench is dug with the excavating bucket 100, a trench 200 will be formed in the soil 20 having a cross section as substantially shown in Fig. 4.
  • Trench 200 has a shape that substantially corresponds with the side edges 104, 105, the front edge 121, 122, 123 and intermediate edges 131, 132 of the excavating bucket 100.
  • the trench 200 has side walls 204, 205 and intermediate walls 231, 232 that correspond with side edge 104, side edge 105 and intermediate edges 131, 132 respectively.
  • the trench 200 further has base surfaces 221, 222, 223 that correspond with front edges 121, 122, 123 respectively.
  • the exact cross-sectional shape of the trench 200 does not perfectly correspond to the shape of the excavating bucket 100, as this depends of the characteristics of the soil 20.
  • the substantially side walls 204, 231, 232, 205 of the trench 200 may partially collapse, rounding of the corners of the cross sectional shape of the trench. Digging a trench in a clay soil will probably form a trench 200 having relatively sharp corners .
  • the shape of the excavating bucket 1, i.e. the length of the front edges 121, 122, 123, side edges 104, 105 and intermediate edges 131, 132 could be chosen in such a way that the collapsing of the side walls 204, 231, 232, 205 is anticipated. It may for instance be possible to make side edges 132 and 105 longer, such that after collapsing of the corresponding side walls 232, 205 the depth of base surface 223 is at the desired depth.
  • the general cross-sectional shape of the trench 200 will substantially correspond with the shape of the excavating bucket 100. This allows for laying cables and/or pipes at different levels in the soil 20, without performing intermediate actions, such as digging or (partially) filling up the trench.
  • the cables and/or pipes 341, 342, 343, 344, 345 are schematically indicated in Fig. 4.
  • the excavating bucket 100 may be provided with bulges 141, 142, 143, 144, 145.
  • These bulges 141, 142, 143, 144, 145 provide the base surfaces 221, 222, 223 with grooves in which the cables and/or wires 341, 342, 343, 344, 345 can easily be placed, as can be seen in Fig. 4.
  • the bulges 141, 142, 143, 144, 145 may also be formed otherwise, for instance, by providing the front edges 121, 122, 123 with a bend.
  • the cables and/or pipes laid at different depths in the soil are never positioned right above each other. This minimizes the risk of digging accidents, such as damaging e.g. a cable, when digging for e.g. a pipe that is positioned at a lower level in the soil than the cable.
  • the shape of the excavating bucket 100 can be designed. Of course, many alternative shapes can be conceived. Instead of dividing the main plate in three portions, the main plate may be divided in any desired number of portions.
  • the difference in the distance between the different front edges and the rotating axis R may vary, depending on the desired cross sectional shape of the trench.
  • the difference is preferably at least 0,05 metre.
  • the dimensions of the excavating bucket according to the invention may be chosen dependent on the desired shape of the trench.
  • the length of the intermediate edges 131, 132 may be chosen such that the different levels in the trench are at the desired relative depths in the soil 20 as desired.
  • Fig. 5 depicts an excavating bucket 150 according to an alternative embodiment of the invention.
  • the edge defining the opening of the interior space of the excavating bucket 150 is provided with round corners, in stead of sharp corners. So, instead of sharp corners between connected edges, such as front edge 121 and intermediate edge 131, rounded corners are provided, as shown in Fig. 5.
  • Such an excavating bucket 150 forms a trench having round corners, that reduces the collapsing of the side walls 204, 231, 232, 205 formed in the soil 20.
  • the portions 111, 112, 113 of the main plate as depicted in Fig. 3 are formed as bended plates that extend from the back edge 103 to their respective front edges 121, 122, 123.
  • each of these portions 111, 112, 113 of the main plate may also be formed by two or more plate parts that are positioned with respect to each other under an angle. These plate parts of such a portion may be flat or bended.
  • the method of digging a trench 200 using an excavating bucket 100, 150 according to the invention could be performed in a single digging action (one dig) but may also be performed in two or more digging actions .
  • the front edges 121, 122, 123 do not necessarily need to be straight edges as shown in the figures, but may also be provided with a structure, such as teeth or the like. The structure may be provided to make the movement of the front edge in the soil relatively smooth.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Earth Drilling (AREA)

Abstract

L'invention concerne une pelle excavatrice (100, 150) composée d'une plaque principale et d'un élément d'accouplement (102). Ce dernier est conçu pour accoupler la pelle excavatrice à un excavateur (10). Cette pelle excavatrice (100, 150) est conçue pour effectuer un mouvement de creusage consistant en un déplacement rotatif autour d'un axe de rotation (R). La plaque principale est constituée par au moins une première et une deuxième partie (111, 112) présentant un premier et un deuxième bord avant (121, 122), une première distance entre le premier bord (121) et l'axe de rotation (R) étant différente d'une deuxième distance entre le deuxième bord (122) et l'axe de rotation (R).
EP05744554A 2004-05-28 2005-05-30 Pelle excavatrice et son utilisation dans un procede de creusage Withdrawn EP1753922A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US57528804P 2004-05-28 2004-05-28
PCT/EP2005/005850 WO2006021244A1 (fr) 2004-05-28 2005-05-30 Pelle excavatrice et son utilisation dans un procede de creusage

Publications (1)

Publication Number Publication Date
EP1753922A1 true EP1753922A1 (fr) 2007-02-21

Family

ID=35637372

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05744554A Withdrawn EP1753922A1 (fr) 2004-05-28 2005-05-30 Pelle excavatrice et son utilisation dans un procede de creusage

Country Status (2)

Country Link
EP (1) EP1753922A1 (fr)
WO (1) WO2006021244A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010021335A1 (de) * 2010-05-22 2011-11-24 Frank Baldinger Verfahren und Vorrichtung zur Herstellung einer Rohrbettung
ITCR20130006A1 (it) * 2013-02-14 2014-08-15 Underdrip Srl Metodo di posa di una rete di sub-irrigazione
WO2019183447A1 (fr) 2018-03-23 2019-09-26 Cashman Dredging And Marine Contracting Co., Llc Godet à découpe de niveau de pente

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2660323A (en) * 1951-06-02 1953-11-24 John J Carlesimo Excavating bucket
NL7114667A (fr) * 1971-10-25 1973-04-27
US4043061A (en) * 1976-04-21 1977-08-23 Leroy Marvin Heitman Ground-shaping systems for a backhoe bucket
US4037337A (en) * 1976-08-18 1977-07-26 Adco Buckets, Inc. Excavating bucket and teeth for a backhoe
US5526591A (en) * 1993-12-13 1996-06-18 Otwell; William C. Excavation bucket and method of digging
DE19640177B4 (de) * 1995-10-04 2005-06-23 Müller, Karlheinz Baggerlöffel
JPH10140597A (ja) * 1996-11-12 1998-05-26 Fumio Kinoshita 掘削具及び地盤掘削方法
FR2842842A1 (fr) * 2002-07-23 2004-01-30 Klac Industrie Outil d'excavation pour pelleteuse hydraulique

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2006021244A1 *

Also Published As

Publication number Publication date
WO2006021244A1 (fr) 2006-03-02

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