EP1236844A1 - Abziehvorrichtung - Google Patents

Abziehvorrichtung Download PDF

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Publication number
EP1236844A1
EP1236844A1 EP02394019A EP02394019A EP1236844A1 EP 1236844 A1 EP1236844 A1 EP 1236844A1 EP 02394019 A EP02394019 A EP 02394019A EP 02394019 A EP02394019 A EP 02394019A EP 1236844 A1 EP1236844 A1 EP 1236844A1
Authority
EP
European Patent Office
Prior art keywords
screeding
concrete
region
engaging member
leading
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Withdrawn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
EP02394019A
Other languages
English (en)
French (fr)
Inventor
David Vincent Byrne
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP1236844A1 publication Critical patent/EP1236844A1/de
Withdrawn legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
    • E04G21/02—Conveying or working-up concrete or similar masses able to be heaped or cast
    • E04G21/10—Devices for levelling, e.g. templates or boards

Definitions

  • This invention relates to a device for screeding a region of material, in particular for screeding a region of freshly laid concrete.
  • US 4,316,715 discloses a triangular support frame structure having front and rear screed blades. Vibrators spaced at intervals along the blades impart vibratory motion to the blades as the device is translated over a region of concrete in a winching arrangement.
  • This invention is aimed at overcoming at least some of the problems associated with known screeding devices.
  • a device for screeding a region of material comprising:-
  • the plurality of vibrators spaced-apart along the beam ensure that the beam is adequately vibrated along its entire length.
  • the screeding device of the invention is suitable for screeding large regions of concrete with a width of, for example, 5m or greater.
  • the beam has at least one access opening to the beam interior housing space.
  • the access opening is provided in the trailing side of the beam.
  • the device comprises at least one closure for selective closure of the access opening.
  • the access opening to the beam interior housing space enables an operator to quickly and easily gain access to the vibrators, for example for maintenance, or repair, or replacement of a vibrator.
  • the device comprises a removable cover for the beam.
  • the cover may be of a plastics material.
  • the device comprises means to draw the beam over a region of material in a winching arrangement.
  • the beam preferably comprises means to facilitate releasable jointing of the beam to an adjacent beam.
  • the jointing means may comprise at least one male member protruding from one beam for engagement with at least one co-operating female member of another beam.
  • the width of the region of material that can be screeded in a single pass is increased.
  • the beam comprises means to align the beam relative to an adjacent beam upon jointing.
  • the alignment means comprises at least one male member protruding from one beam for mating with at least one co-operating female member of another beam.
  • the alignment means is particularly advantageous when moving two or more jointed beams over a long region of material being screeded. By correctly aligning the adjacent beams, this helps to prevent skewing of the path of the beams over the region of material.
  • the material engaging member extends beyond an end of the beam to form a screeding bridge between the beam and an adjacent beam.
  • the screeding bridge arrangement helps to ensure that no region of material remains unscreeded between adjacent beams.
  • the material engaging member may extend from a base side of the beam to support the base side above the material during screeding.
  • the beam may have a substantially trapezoidal shape in transverse cross-section.
  • the leading side and the trailing side of the beam diverge outwardly towards a base side of the beam.
  • the leading material engaging member may be configured to divert material, which has accumulated on the member, forward, in the direction of travel of the beam, in a generally rotational movement.
  • the leading material engaging member is shaped to scoop accumulated material forward in a generally rotational movement.
  • the beam may be of stainless steel.
  • the device 1 comprises a beam 2 having a leading material engaging member and a trailing material engaging member, and a plurality of vibrators 11.
  • the device 1 may be used to screed a region of material, such as a region of freshly laid concrete 25, by vibrating the beam 2 as the beam 2 is moved over the region of concrete 25 with the material engaging members in contact with the concrete 25.
  • the beam 2 comprises an "inverted-U" shaped upper plate 7, a base plate 8, and two “A" shaped end plates 9.
  • the plates 7, 8, 9 of the beam 2 are fixed together by means of rivets, and when assembled the beam 2 is hollow and defines an interior housing space 10 within the beam 2.
  • the assembled beam 2 has a substantially trapezoidal shape in transverse cross-section.
  • leading and trailing material engaging members are provided in this case by a leading blade 3 and a trailing blade 4 respectively.
  • the leading blade 3 extends forwardly from a leading side 5 of the upper plate 7, and the trailing blade 4 extends rearwardly from a trailing side 6 of the upper plate 7.
  • Both of the blades 3, 4 extend downwardly from the base plate 8. Rivets are used to fix both the blades 3, 4 to the upper plate 7 and the base plate 8 (Fig. 2).
  • three air-operated vibrators 11 are provided located in the beam interior housing space 10, and spaced-apart along the beam 2 with a distance of approximately 0.4m between each vibrator 11, as illustrated in Figs. 5 and 6.
  • a plurality of corresponding access openings 13 to the beam interior 10 are provided in the trailing side 6 of the upper plate 7. The openings 13 enable an operator of the screeding device 1 to gain access to any vibrator 11 within the beam interior 10, for example for repair or maintenance or replacement of a vibrator 11, without having to dismantle the beam 2.
  • the vibrators 11 are held in place on the base plate 8 by means of two cross bars 12, as illustrated in Figs. 3 and 4.
  • the cross bars 12, which are in contact with the vibrator 11, assist in distributing the vibrational forces to the upper plate 7 and the blades 3, 4.
  • the screeding device 1 further comprises means to draw the beam 2 over the region of concrete 25 in a winching arrangement.
  • the winching means is provided by two connecting lines 15, with hooks 17 at ends 18 of the lines 15.
  • Each connecting line 15 is normally wound around a reel 16, however the line 15 may be unwound from the reel 16 and rewound around the reel 16 by rotating a handle 19.
  • braces 20 support the handles 19 and the reels 16 at a suitable height above the concrete 25.
  • Each brace 20 may be fixed to the end plate 9 by any suitable means, such as bolting or welding.
  • the beam 2 comprises means to facilitate releasable jointing of the beam 2 to a beam 2 1 of another similar screeding device 1 1 (Fig. 7).
  • the jointing means is provided, in this case, by a male member, such as a threaded screw 21, protruding from the end plate 9 1 of one beam 2 1 for engagement with a co-operating female member, such as a threaded tube 22, on the end plate 9 of the other beam 2.
  • leading blades 3, 3 1 and the trailing blades 4, 4 1 extend beyond the ends of the beams 2, 2 1 , typically by approximately 75mm, to form a screeding bridge between adjacent beams 2, 2 1 when jointed together (Fig. 7).
  • a lock nut 23 is also provided for releasably locking the two beams 2, 2 1 together in the position illustrated in Fig. 7 in which the blades 3, 3 1 , 4, 4 1 of adjacent beams 2, 2 1 abut one another end-to-end.
  • the screw 21, the tube 22 and the nut 23 are all right hand threaded.
  • This simple threaded, nut and bolt jointing arrangement enables two or more screeding devices 1, 1 1 to be quickly and easily jointed together end-to-end to extend the width of the region of concrete that can be screeded using the screeding device of the invention.
  • Splice plates may be used in addition for a more secure jointing arrangement.
  • the beam 2 is constructed of stainless steel, which enables the beam 2 to be spray-cleaned and drip-dried without rusting, while also providing for a sufficiently rigid beam 2.
  • the screeding device 1 In use, the screeding device 1 is located resting upon the region of freshly laid concrete 25 to be screeded, with the blades 3, 4 in contact with the concrete 25, and the base plate 8 supported slightly above the concrete 25 (Fig. 2).
  • the beam 2 extends over the entire width of the concrete 25 from one side 30 of the concrete framework to the other side 31 of the concrete framework (Fig. 5).
  • the handles 19 are rotated to unwind the connecting lines 15 from the reels 16.
  • the unwound connecting lines 15 are then lead around pulleys 27, and the hooks 17 are engaged with an external support, such as the end of the concrete framework 32 (Figs. 2 and 5).
  • the vibrators 11 cause the blades 3, 4, which are in contact with the concrete, to vibrate. In this manner, the blades 3, 4 screed the concrete 2 into a smooth, levelled layer as the beam 2 moves over the concrete 25.
  • the hooks 17 are disengaged from the framework 32, and the connecting lines 15 are rewound around the reels 16.
  • two or more screeding devices 1 can be jointed together end-to-end using the jointing means, as described above with reference to Figs. 6 and 7. In this manner any width of concrete can be screeded in a single pass using the screeding device 1, or an assembly of two or more of the screeding devices of the invention.
  • the screeding device 1 may comprise closures to enable selective closure of the access openings 13.
  • the closures provide further protection against concrete or other unwanted material entering the beam interior housing space 10.
  • the access openings 13 could be provided in the leading side 5 of the upper plate 7.
  • a removable cover may be provided for the beam, for example a heavy plastics tarpaulin.
  • the cover acts as an external sheath to prevent concrete attaching to the beam 2.
  • any type of vibrator may be used with the screeding device 1 according to the invention.
  • a scoop 60 may be provided on the leading blade 3 of the beam 2, as illustrated in Fig. 8.
  • the scoop 60 is shaped to divert concrete, which has accumulated on the blade 3, forward, in the direction of travel of the beam 2, in a generally rotational movement. In this way, the scoop 60 helps to minimise clogging or excess accumulation of concrete on the leading blade 3.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Road Paving Machines (AREA)
  • On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
EP02394019A 2001-02-09 2002-02-08 Abziehvorrichtung Withdrawn EP1236844A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IE20010135 2001-02-09
IE20010135 2001-02-09

Publications (1)

Publication Number Publication Date
EP1236844A1 true EP1236844A1 (de) 2002-09-04

Family

ID=11042736

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02394019A Withdrawn EP1236844A1 (de) 2001-02-09 2002-02-08 Abziehvorrichtung

Country Status (2)

Country Link
EP (1) EP1236844A1 (de)
GB (1) GB2372773B (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010072879A1 (es) * 2008-12-23 2010-07-01 Excavaciones Breogan-Hugo, S.L. Dispositivo para la colocación de hormigón armado en superficies

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140247262A1 (en) * 2011-10-01 2014-09-04 Johnson Controls Automotive Electronics Sas Head-up display having a plurality of projection planes
CN111021201B (zh) * 2020-01-02 2021-08-31 广东博智林机器人有限公司 一种浆料抹平装置和整平机

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2289248A (en) * 1940-06-05 1942-07-07 Kalman Floor Co Method of treating concrete
US4340351A (en) * 1981-02-13 1982-07-20 Owens Joe M Vibratory concrete screed with eccentric drive shaft
US4349295A (en) * 1980-03-21 1982-09-14 Morrison Donald R Structural ridge member for vibrating concrete screeds
US5540519A (en) * 1995-01-31 1996-07-30 Weber; Doug J. Portable vibratory wet screed
US5803656A (en) * 1996-10-31 1998-09-08 Turck; Jeffrey Powered, roler-type concrete screed
EP0995859A1 (de) * 1998-10-19 2000-04-26 Bouwmachinefabrik Lievers B.V. Vorrichtung mit Vibrationseinbaubohle zum Nivellieren von Frischbetonoberflächen

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4316715A (en) * 1979-04-26 1982-02-23 Allen Engineering Corporation Vibratory concrete screed having an adjustable extension bracket
US4701071A (en) * 1986-07-23 1987-10-20 Morrison Donald R Portable screed
US4931008A (en) * 1989-01-04 1990-06-05 Morrison Donald R Quick disassembly screed construction
GB2263715A (en) * 1992-01-09 1993-08-04 Leonard Alfred Edney Screed rail

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2289248A (en) * 1940-06-05 1942-07-07 Kalman Floor Co Method of treating concrete
US4349295A (en) * 1980-03-21 1982-09-14 Morrison Donald R Structural ridge member for vibrating concrete screeds
US4340351A (en) * 1981-02-13 1982-07-20 Owens Joe M Vibratory concrete screed with eccentric drive shaft
US5540519A (en) * 1995-01-31 1996-07-30 Weber; Doug J. Portable vibratory wet screed
US5803656A (en) * 1996-10-31 1998-09-08 Turck; Jeffrey Powered, roler-type concrete screed
EP0995859A1 (de) * 1998-10-19 2000-04-26 Bouwmachinefabrik Lievers B.V. Vorrichtung mit Vibrationseinbaubohle zum Nivellieren von Frischbetonoberflächen

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010072879A1 (es) * 2008-12-23 2010-07-01 Excavaciones Breogan-Hugo, S.L. Dispositivo para la colocación de hormigón armado en superficies
ES2346171A1 (es) * 2008-12-23 2010-10-11 Excavaciones Breogan- Hugo, S.L Dispositivo para la colocacion de hormigon armado en superficies.

Also Published As

Publication number Publication date
GB0203128D0 (en) 2002-03-27
IE20020090A1 (en) 2002-09-18
GB2372773B (en) 2004-11-03
GB2372773A (en) 2002-09-04

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