WO2002012640A1 - Device for opening narrow trenches and placing matching prefabricated elements - Google Patents
Device for opening narrow trenches and placing matching prefabricated elements Download PDFInfo
- Publication number
- WO2002012640A1 WO2002012640A1 PCT/ES2001/000293 ES0100293W WO0212640A1 WO 2002012640 A1 WO2002012640 A1 WO 2002012640A1 ES 0100293 W ES0100293 W ES 0100293W WO 0212640 A1 WO0212640 A1 WO 0212640A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- tongue
- prefabricated
- groove
- groove elements
- thrust
- Prior art date
Links
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
- E02F3/18—Dredgers; Soil-shifting machines mechanically-driven with digging wheels turning round an axis, e.g. bucket-type wheels
- E02F3/188—Dredgers; Soil-shifting machines mechanically-driven with digging wheels turning round an axis, e.g. bucket-type wheels with the axis being horizontal and transverse to the direction of travel
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C19/00—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
- E01C19/52—Apparatus for laying individual preformed surfacing elements, e.g. kerbstones
-
- 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
- E02F3/18—Dredgers; Soil-shifting machines mechanically-driven with digging wheels turning round an axis, e.g. bucket-type wheels
- E02F3/20—Dredgers; Soil-shifting machines mechanically-driven with digging wheels turning round an axis, e.g. bucket-type wheels with tools that only loosen the material, i.e. mill-type wheels
-
- 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
- E02F5/08—Dredgers or soil-shifting machines for special purposes for digging trenches or ditches with digging wheels turning round an axis
-
- 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
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F7/00—Equipment for conveying or separating excavated material
- E02F7/02—Conveying equipment mounted on a dredger
Definitions
- the present invention relates to a device for opening narrow trenches and placing in the same different prefabricated conduits constituted by short straight, rigid and interlocking sections by tongue and groove. Both the opening of the trench and the placement of the conduits or gutters and the final compaction and smoothing of the excavated material are carried out in a single operation and at good speed.
- the device of the invention has been developed to place auxiliary conduits in high-speed railways but can also be used for electrical and communication cables in urban areas, irrigation canals, etc.
- document ES 8703560 of the same applicant describes a disc trencher specially adapted to open narrow trenches in compact terraces that uses a cutter disk that has on its periphery a plurality of replaceable hard metal spikes, the depth of cut being adjustable thanks to that the chassis rests on the firm by Intermediate of a wheel movable in height.
- document ES 2027503 also of the same applicant describes a device that, starting from the trencher described in the previous document, incorporates support means for a cable coil and an oscillating guide tube for depositing the cable at the bottom of the trench, which allows the opening of the trench and the placement of the cable in the same continuous operation.
- US 5,707,175 describes a device composed of a trench excavator associated with a feeder-loader adapted to the placement of tongue and groove pipes.
- the objective is to carry out, more or less continuously, the excavation of the trench and the placement of the pipes, for which the feeder-loader contains a certain number of sections of pipe stacked vertically.
- a mechanical retainer releases the lower pipe section in a timely manner, and then a piston Hydraulic is responsible for plugging it into the larger diameter housing of the last section of pipe deposited in the trench.
- the device of the invention has been designed to solve this problem to full satisfaction and for this purpose, the installation of the disc trencher and the means that make up and contain the excavated earth and, in particular, a drawer, are planned on the same vehicle sweeper that, located behind the trencher, allows to make up and contain the land on the outside while the successive gutters, coupled together and subjected to a thrust that allows to form a continuous channel, descend down inside.
- the opening of the trench is achieved to fair measures with any type of terrain, compact or loose, and on the other hand it prevents the land from the edges from falling to the bottom of the ditch creating problems supporting the gutters, leaving at the bottom of the ditch a very fine excavation that constitutes an excellent seat bed of the rigid gutters on the ground.
- the gutters are embedded in each other by their front and are deposited in the sweeping drawer with a certain longitudinal thrust so they behave as an articulated polygon for the small inclination deviations they suffer.
- the device object of the invention comprises a tractor vehicle that incorporates a disc trencher at its rear with a cutting width slightly greater than that of the gutters, and which reaches a suitable useful depth at the height thereof.
- the device incorporates a support wheel on which the trencher chassis rests and which, being height adjustable, maintains the desired depth of cut.
- the gutters are deposited manually or by means of a wheelbarrow or loader provided with a hydraulic actuator.
- the roller feeder has a small inclination so the channels move transversely to its longitudinal axis until it falls into a roller pusher. This is arranged in the same direction of travel and also has a slight inclination, which is gradually reduced to a minimum value very close to the horizontal.
- the gutters are imprisoned against the roller pusher by a plurality of pneumatic push wheels, which transmit them by friction a force that presses the gutters against each other and forces them to penetrate the ditch.
- the speed of rotation of the thrust wheels is variable and is regulated by a lap counter in the thrust motor itself that supplies them with their turning movement, in such a way that it adapts to the travel speed of the towing vehicle, providing a a certain sliding between the push wheels and the gutters, that is to say the pneumatic wheels tend to move the gutters at a faster speed than the displacement of the device on the ground, since the maximum thrust effort absorbed by the gutters is limited by the coefficient friction wheel / gutter.
- the sweeping drawer is attached on its side and at ground level an adjustable blade to distribute the excavated material leaving most of it in an excavation slope but reserving a small amount to fill the lateral grooves that remain between the gutters and the walls of the ditch.
- an adjustable blade to distribute the excavated material leaving most of it in an excavation slope but reserving a small amount to fill the lateral grooves that remain between the gutters and the walls of the ditch.
- it incorporates two raseadoras blades to extend the excavation and fill the grooves between gutters and ditch, as well as some compactor rollers that compact and smooth the excavated material used for filling the grooves, pressing it down and against the outer walls of the gutters
- a first problem lies in the fact that the tilting stop used to feed the gutters transversely allows them to pass in compact groups until the first one stops at the roller pusher. Consequently, the first gutter is trapped laterally by the weight of the following, being subjected to a significant friction that stops its movement preventing it from reaching the first thrust wheel.
- the proposed solution consists in replacing the rocker stop with a step-by-step rotary feeder that only releases one channel at a time.
- a second problem detected lies in the defective lateral alignment of the successive gutters once they are trapped in the roller pusher. It has been observed that if the gutters can move in it with excessive transverse clearance, the tongue and groove they have at their ends may not coincide and since the entire gutter train is subjected to a strong longitudinal thrust, deterioration will occur. at the edges of the eyelashes that constitute the tongue and groove.
- the proposed solution is that the thrust wheels have a width that coincides substantially with the central channel of the gutters, which ensures their perfect guidance and a smooth coupling, without interference, of the tongue and groove of successive gutters.
- a third problem detected is that the gutters during their descent define a straight path that forms a slight angle to the ground as they are being pushed by the device of the invention, while once deposited at the bottom of the ditch they logically follow the Same alignment as the terrain. This makes that when leaving the device the successive channels tend to support each other at the top, so that this area can suffer small breaks that, not affecting the functionality of the driving, have a deteriorated visual appearance.
- the proposed solution consists in inserting soft material separators between successive channels that absorb the stresses and prevent direct contact between the upper part of successive channels.
- Figure I shows an elevation of the device object of the invention.
- Figure 2 shows a plan view of the device object of the invention.
- Figure 3 shows a top perspective view of the front end of a gutter.
- Figure 4 shows schematically, in plan, the tongue and groove coupling of the gutters.
- Figure 5 shows a side view of the roller feeder with its stop.
- Figure 6 shows a schematic longitudinal view of the roller pusher.
- Figure 7 shows schematically, in plan, the successive treatment of excavated lands.
- Figure 8 shows a schematic elevation of the step-by-step rotary feeder system used in the improved device.
- Figure 9 shows a plan view of the improved device.
- Figure 10 shows a schematic longitudinal view of the placement of gutters when separators are interleaved, the broken line which they configure when passing from the roller pusher to the bottom of the trench is appreciated.
- the numerical references correspond to the following parts and elements.
- the device object of the invention is formed by a towing vehicle (1), of great drag power, to which a chassis (14) is coupled on which a cutting disc (2) is arranged. ) that receives its turning movement, contrary to that of driving, from the power take-off (15) of the tractor vehicle (1) through a conventional conical forwarding (16), mounted on the periphery of the cutting disc (2) a plurality of spades (17) of tungsten carbide.
- the chassis (14) rests on a support wheel (3) mounted on a support fork (18), articulated on the chassis (14), and whose position with respect to the chassis (14) is regulated by a support piston (19 ), hydraulic.
- a thrust motor (8) transmits its movement to the thrust wheels (7) by means of thrust chains (9).
- a stop (5) in the form of a vertical sheet, integral with a stop shaft (27) attached to a stop lever (28) that ends in a handle (29).
- an interlocking (30) is provided consisting of a double articulated lever whose shorter arm is capable of penetrating into a fixed housing (31). See figure 5.
- a sweeping drawer (32) made of thin sheet and of a "U" shaped cross section, closed at the front by means of a rake (34) whose function is to prevent the excavation soil not ejected out of the ditch by the cutting disc (2) from interfering with the correct placement of the gutters (33).
- the gutters (33) are arranged side by side and transverse to the slope on the feeder rollers (4) tending to move in the direction of the arrow as indicated in the figure 5, until retained by the stop (5).
- the operator unlocks it by pressing the interlock (30), at which time the stop lever (28) is released, which can be turned up by raising the stop 5 and allowing the gutters (33) to travel through the feeder rollers ( 4) due to the inclination that these present until reaching the pusher rollers (6), where they are retained by the lateral upright (26).
- the structure of the roller pusher can be seen in detail in Figure 6.
- the gutters (33) move to the left of the figure due to the inclination that the roller feeder presents until they are trapped by the push wheels (7) that exert a thrust in the direction of the arrows thanks to the fact that they receive a Rotary movement supplied by a thrust motor (8) through two thrust chains (9).
- the effort with which the gutters (33) are pressed by the push wheels (7) against the pusher rollers (6) can be regulated by means of the adjusting nuts (24) acting on the preload of the springs of push (23).
- the maximum thrust force that is carried out on the set of gutters to force their introduction into the trench recently opened by the cutting disc (2) will depend on the setting of the thrust springs (23) and the coefficient of friction between the thrust wheel (7) and the surface of the gutters (33).
- the thrust motor (8) is sized with a power greater than the maximum that can be transmitted by friction.
- each channel is suspended for a moment by the channel that follows it.
- two thrust wheels (7) have been presented since it has been found to be the optimum number to place gutters of a certain size, such as those used for auxiliary services in the lines of the high speed railways.
- FIG 7 the different elements involved in the excavation and filling of the trench have been very schematically represented.
- This is opened by the cutter disk (2) of the trencher, which ejects the excavated material forward and upward being diverted to each side of the ditch by the deflector (13) located at the front of the cutting disc (2).
- the baffle (13) has a "Y" shape of uneven branches and is offset from the cutting disc (2) so that most of the excavated material (39) is directed to one side, in this case to the side right of march.
- the orientable blade (10) has the mission of dividing the initial excavated material (39) from the side where it has mostly accumulated in a small amount close to the trench similar to that deposited by the deflector (13) on the opposite side thereof, shifting the most of the initial excavation (39) at the lateral distance of the desired trench. This displaced excavated material constitutes the excess of the excavation.
- the raseadoras blades (11) move at a constant height on the ground since they are attached to the same frame that supports the compactor rollers (12) that roll on the ground.
- a type of gutter (33) commonly used for auxiliary conduits of high-speed railways has been represented.
- the channel in question is made of concrete and has a "U" cross section open at the top, where it has, on each side, two cover housings (42) that allow cover the gutters (33) and their contents with a cover not shown.
- the device object of the invention is also suitable for depositing in the ditch any other type of prefabricated rigid ducts, for example hollow pipes of rectangular external perimeter that constitute a hollow duct, fully buried or no, in which electrical or communications cables can be introduced later.
- the improved device comprising a step-by-step rotary feeder (51) arranged on the feeder roller assembly (4) is shown in Figures 8 and 9.
- This step-by-step rotary feeder (51) is constructed from two discs (52) joined by a central axis (53) onto which a plurality of alveolar plates (54) are welded, semicircularly, preferably in number of six , regularly distributed by its periphery and with a step that allows to release a gutter but retain the next.
- a switch (58) provided with a probe (59) it can detect the presence or not of a channel (33) resting on the initial section of the pusher rollers (6).
- the operation of the improved device is as follows.
- a set of gutters (33) deposited on the feeder rollers (4) will be retained by the first one because the alveolar plates (54) of the step-by-step rotary feeder (51) will be inserted into the central channel of this first gutter, at the same time that the bolt (56) prevents the rotation of the gearwheel (55) and consequently that of the set of the rotary feeder step by step (51).
- the thrust wheels (7) have a cross-sectional profile as rounded as possible since, when almost seamlessly coupled to the central channel of the gutters (33), it must allow lateral movements thereof to center and separate them from the vertical walls of the sweeping drawer (32).
- the separators (60) excellent results have been obtained when performing these in expanded polystyrene since it does not matter that they undergo permanent deformation during the placement of the gutters, being a very economical material.
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Architecture (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
- Superconductors And Manufacturing Methods Therefor (AREA)
- Road Repair (AREA)
- Laying Of Electric Cables Or Lines Outside (AREA)
- Diaphragms For Electromechanical Transducers (AREA)
- Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
- Sewage (AREA)
- Air Bags (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE60107866T DE60107866T2 (en) | 2000-08-01 | 2001-07-24 | DEVICE FOR OPENING NARROWED GRIZES AND INTRODUCING MATCHING FINISHED COMPONENTS |
EP01960730A EP1325987B1 (en) | 2000-08-01 | 2001-07-24 | Device for opening narrow trenches and placing matching prefabricated elements |
DK01960730T DK1325987T3 (en) | 2000-08-01 | 2001-07-24 | Device for producing narrow grooves and fitting prefabricated elements with mutual fit |
AU2001282135A AU2001282135A1 (en) | 2000-08-01 | 2001-07-24 | Device for opening narrow trenches and placing matching prefabricated elements |
AT01960730T ATE285002T1 (en) | 2000-08-01 | 2001-07-24 | DEVICE FOR OPENING NARROW TRENCHES AND INSERTING MATCHING PREFABRICATED COMPONENTS |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ESP200001958 | 2000-08-01 | ||
ES200001958A ES2167261B2 (en) | 2000-08-01 | 2000-08-01 | DEVICE FOR OPENING NARROW DROPS AND PLACEMENT OF MACHIHEMBRATED PREFABRICATED ELEMENTS. |
ES200101366A ES2192451B2 (en) | 2001-06-13 | 2001-06-13 | IMPROVEMENTS IN THE OBJECT OF THE INVENTION PATENT P 200001958 FOR "DEVICE FOR OPENING NARROW DROPS AND PLACEMENT OF MACHIEMBRATED PREFABRICATED ELEMENTS. |
ESP200101366 | 2001-06-13 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2002012640A1 true WO2002012640A1 (en) | 2002-02-14 |
Family
ID=26156196
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/ES2001/000293 WO2002012640A1 (en) | 2000-08-01 | 2001-07-24 | Device for opening narrow trenches and placing matching prefabricated elements |
Country Status (7)
Country | Link |
---|---|
EP (1) | EP1325987B1 (en) |
CN (1) | CN1214160C (en) |
AT (1) | ATE285002T1 (en) |
AU (1) | AU2001282135A1 (en) |
DE (1) | DE60107866T2 (en) |
PT (1) | PT1325987E (en) |
WO (1) | WO2002012640A1 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ES2259503A1 (en) * | 2003-12-05 | 2006-10-01 | Jaime Corcoll Virgili | Canal assembly device for railway platforms has guides and pushing unit that include ramp that connects bottom of trench and high level of device chassis |
WO2006136633A1 (en) * | 2005-06-20 | 2006-12-28 | Tercero Lorenzo Garcia | Channel-positioning machine |
ES2275412A1 (en) * | 2005-06-20 | 2007-06-01 | Lorenzo Garcia Tercero | Channel-positioning machine |
ES2710545A1 (en) * | 2017-10-23 | 2019-04-25 | Ferrovial Agroman Sa | SYSTEM TO COMPACT THE GROUND TO THE SIDES OF A CHANNEL (Machine-translation by Google Translate, not legally binding) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102007010101B4 (en) * | 2007-03-02 | 2012-07-05 | Geschw. Balter Bauunternehmung Gmbh | Method for producing a supply line duct and train consisting of vehicles for carrying out the method |
NL1037382C2 (en) * | 2009-10-09 | 2011-04-12 | Willem Hendrik Aantjes | METHOD AND DEVICE FOR PUTTING TIRES |
ES2410779B1 (en) * | 2011-09-05 | 2014-09-10 | Enrique RECA BLANCO | MACHINE FOR THE PLACEMENT OF PREFABRICATED CHANNELS IN TIDES, WITH RECOVERY SYSTEM OF GRAVES AND ZAHORRAS |
FR3002790B1 (en) * | 2013-03-04 | 2015-04-10 | Saint Gobain Pont A Mousson | DEVICE FOR INSTALLING A BOREED PIPE AND CORRESPONDING METHOD |
CN104534168B (en) * | 2014-12-30 | 2016-08-24 | 中交天津港湾工程研究院有限公司 | A kind of deep pipeline burying machine |
CN107268399B (en) * | 2017-06-19 | 2019-05-07 | 浙江省东阳市市政环境工程有限公司 | A kind of bituminous pavement laying vehicle |
CN107245927B (en) * | 2017-07-07 | 2019-07-19 | 中国十五冶金建设集团有限公司 | Pavement of road pre-installs constructing structure and its construction method |
CN109930644A (en) * | 2019-04-10 | 2019-06-25 | 安徽开源路桥有限责任公司 | Deep trench excavates rapid shaping machinery and road culvert pipe refines construction method |
CN112195731A (en) * | 2020-10-13 | 2021-01-08 | 余祖广 | Efficient automatic installation equipment for curbstone |
CN115199815B (en) * | 2022-07-22 | 2024-03-08 | 中国水电基础局有限公司 | Pipeline burying device for hydraulic engineering |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2815726A (en) * | 1955-12-20 | 1957-12-10 | Omen B Davenport | Drain tile laying device |
US3421609A (en) * | 1966-09-19 | 1969-01-14 | Hancock Brick & Tile Co | Drain tile laying apparatus |
ES2007868A6 (en) * | 1988-05-19 | 1989-07-01 | Gomez Perez Eduardo | Improvements introduced in the patent of invention number, 553.269, by: "system of opening of narrow trenches in affirmed and/or paved zones". (Machine-translation by Google Translate, not legally binding) |
FR2697550A1 (en) * | 1992-11-02 | 1994-05-06 | Yn | Drainage machine for turfed or stabilised land - incorporates trench cutter, hopper chamber to dispense draining material and turf applicator or seeder |
GB2296304A (en) * | 1994-12-20 | 1996-06-26 | Brierley B | Pre-cast concrete box culvert |
ES2127383T3 (en) * | 1992-08-27 | 1999-04-16 | Mastenbroek & Company Ltd | PIPE EXCAVATING AND INSTALLING MACHINES. |
-
2001
- 2001-07-24 AU AU2001282135A patent/AU2001282135A1/en not_active Abandoned
- 2001-07-24 WO PCT/ES2001/000293 patent/WO2002012640A1/en active IP Right Grant
- 2001-07-24 AT AT01960730T patent/ATE285002T1/en not_active IP Right Cessation
- 2001-07-24 EP EP01960730A patent/EP1325987B1/en not_active Expired - Lifetime
- 2001-07-24 PT PT01960730T patent/PT1325987E/en unknown
- 2001-07-24 CN CN01815259.7A patent/CN1214160C/en not_active Expired - Fee Related
- 2001-07-24 DE DE60107866T patent/DE60107866T2/en not_active Expired - Fee Related
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2815726A (en) * | 1955-12-20 | 1957-12-10 | Omen B Davenport | Drain tile laying device |
US3421609A (en) * | 1966-09-19 | 1969-01-14 | Hancock Brick & Tile Co | Drain tile laying apparatus |
ES2007868A6 (en) * | 1988-05-19 | 1989-07-01 | Gomez Perez Eduardo | Improvements introduced in the patent of invention number, 553.269, by: "system of opening of narrow trenches in affirmed and/or paved zones". (Machine-translation by Google Translate, not legally binding) |
ES2127383T3 (en) * | 1992-08-27 | 1999-04-16 | Mastenbroek & Company Ltd | PIPE EXCAVATING AND INSTALLING MACHINES. |
FR2697550A1 (en) * | 1992-11-02 | 1994-05-06 | Yn | Drainage machine for turfed or stabilised land - incorporates trench cutter, hopper chamber to dispense draining material and turf applicator or seeder |
GB2296304A (en) * | 1994-12-20 | 1996-06-26 | Brierley B | Pre-cast concrete box culvert |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ES2259503A1 (en) * | 2003-12-05 | 2006-10-01 | Jaime Corcoll Virgili | Canal assembly device for railway platforms has guides and pushing unit that include ramp that connects bottom of trench and high level of device chassis |
WO2006136633A1 (en) * | 2005-06-20 | 2006-12-28 | Tercero Lorenzo Garcia | Channel-positioning machine |
ES2275412A1 (en) * | 2005-06-20 | 2007-06-01 | Lorenzo Garcia Tercero | Channel-positioning machine |
ES2288422A1 (en) * | 2005-06-20 | 2008-01-01 | Lorenzo Garcia Tercero | Channel-positioning machine |
ES2710545A1 (en) * | 2017-10-23 | 2019-04-25 | Ferrovial Agroman Sa | SYSTEM TO COMPACT THE GROUND TO THE SIDES OF A CHANNEL (Machine-translation by Google Translate, not legally binding) |
Also Published As
Publication number | Publication date |
---|---|
DE60107866T2 (en) | 2006-04-13 |
PT1325987E (en) | 2005-07-29 |
CN1214160C (en) | 2005-08-10 |
CN1452677A (en) | 2003-10-29 |
DE60107866D1 (en) | 2005-01-20 |
ATE285002T1 (en) | 2005-01-15 |
EP1325987B1 (en) | 2004-12-15 |
AU2001282135A1 (en) | 2002-02-18 |
EP1325987A1 (en) | 2003-07-09 |
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