EP0965685B1 - Einbaubohle für einen Strassenfertiger - Google Patents

Einbaubohle für einen Strassenfertiger Download PDF

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Publication number
EP0965685B1
EP0965685B1 EP99110690A EP99110690A EP0965685B1 EP 0965685 B1 EP0965685 B1 EP 0965685B1 EP 99110690 A EP99110690 A EP 99110690A EP 99110690 A EP99110690 A EP 99110690A EP 0965685 B1 EP0965685 B1 EP 0965685B1
Authority
EP
European Patent Office
Prior art keywords
coil
screed
tamper bar
base plate
screed according
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.)
Expired - Lifetime
Application number
EP99110690A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0965685A2 (de
EP0965685A3 (de
Inventor
Cord Nottmeier
Hans-Joachim Komm
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.)
ABG Allgemeine Baumaschinen GmbH
Original Assignee
ABG Allgemeine Baumaschinen GmbH
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 ABG Allgemeine Baumaschinen GmbH filed Critical ABG Allgemeine Baumaschinen GmbH
Publication of EP0965685A2 publication Critical patent/EP0965685A2/de
Publication of EP0965685A3 publication Critical patent/EP0965685A3/de
Application granted granted Critical
Publication of EP0965685B1 publication Critical patent/EP0965685B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/02—Induction heating
    • H05B6/10—Induction heating apparatus, other than furnaces, for specific applications
    • H05B6/105—Induction heating apparatus, other than furnaces, for specific applications using a susceptor
    • 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
    • E01C19/22—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for consolidating or finishing laid-down unset materials
    • E01C19/30—Tamping or vibrating apparatus other than rollers ; Devices for ramming individual paving elements
    • E01C19/34—Power-driven rammers or tampers, e.g. air-hammer impacted shoes for ramming stone-sett paving; Hand-actuated ramming or tamping machines, e.g. tampers with manually hoisted dropping weight
    • E01C19/40—Power-driven rammers or tampers, e.g. air-hammer impacted shoes for ramming stone-sett paving; Hand-actuated ramming or tamping machines, e.g. tampers with manually hoisted dropping weight adapted to impart a smooth finish to the paving, e.g. tamping or vibrating finishers
    • E01C19/407—Power-driven rammers or tampers, e.g. air-hammer impacted shoes for ramming stone-sett paving; Hand-actuated ramming or tamping machines, e.g. tampers with manually hoisted dropping weight adapted to impart a smooth finish to the paving, e.g. tamping or vibrating finishers with elements or parts partly or fully immersed in or penetrating into the material to act thereon, e.g. immersed vibrators or vibrating parts, kneading tampers, spaders
    • 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
    • E01C2301/00—Machine characteristics, parts or accessories not otherwise provided for
    • E01C2301/10—Heated screeds

Definitions

  • the invention relates to a screed for a paver according to the Preamble of claim 1.
  • Asphalt pavers usually include one on the back in the direction of installation Screed arranged behind a auger. Such screeds are Articulated on tie arms on the paver, so that they can be installed Swim material.
  • Such a screed is known from EP 0 641 887 A1, in which in Installation direction in front of a base plate and designed as a tamper bar Movable tool is arranged, which is transverse to the direction of installation extends.
  • the tamper bar can be driven by an eccentric drive and via a heating element, e.g. a heating element, electrically heated.
  • the tamper bar comprises at least one wear part and at least one support part, wherein at least one channel for receiving the heating element in the wearing part, in Carrier part or between wear part and carrier part is formed. That in the channel located heating element is thus in operation of the screed with Tamper bar moved up and down. As a result of the moving supply lines there are frequent malfunctions.
  • the object of the invention is a screed for a paver to create according to the preamble of claim 1, in which the heating of The tamper bar is less prone to failure.
  • the tamper bar over at least one coil arranged adjacent to this can be heated electrically.
  • the A high-frequency current can be applied to the coil via a current source, being in the case of a high frequency current flowing through the coil Eddy currents can be induced in the tamper bar.
  • the tamper bar preferably a short circuit for the magnetic field generated by the coil.
  • the at least one coil can in particular have a U-shaped magnetizable core have, the tamper bar forms the yoke to the core, but also as Air coil, ring coil with sufficient winding spacing or rod-shaped coil be trained.
  • the geometry of the coil is the respective application Space adapted.
  • the power source can be an AC power source or be a three-phase source, and it can be followed by a frequency converter his.
  • the tamper bar is an electrical conductor in which a magnetic River eddy currents are inducible. The high-frequency flowing through the coils Current creates a periodically changing magnetic field, which Eddy currents induced in the tamper bar. The resulting warming is used to heat the tamper bar, so that no heating elements with Cable feeds are required, which are moved with the tamper bar have to.
  • the coils can be on the base plate on a front wall the screed or on the screed body.
  • the coils are preferably low spatial distance from the component to be heated.
  • the front in the direction of installation tamper Pre-compression of the material to be installed can be electrical Heating of the front tamper bar in the direction of installation by at least one the front wall of the screed arranged coil take place while the Heating of the rear tamper bar in the installation direction by at least one the bottom plate arranged coil takes place.
  • bitumen which has cooled over night and hardened as a result by correspondingly increasing the current output applied by the coils brought to a temperature significantly above normal Working temperature of the tamper bar is from 120 to 140 ° C. That way softened bitumen in the area of the tamper bar and resolved if necessary and the period until the commissioning of the Screed shortened.
  • the screed shown for a paver includes a bottom floating on built-in material and this smoothing and compacting Base plate 1, which preferably has a carrier 2 with a vibration shaft 3 is connected, which is coupled to a vibration drive (not shown).
  • Tamper bar 4 In the installation direction immediately in front of the base plate 1 is a cross to Installation direction over the entire width of the base plate 1 extending Tamper bar 4 arranged.
  • the tamper bar 4 is via an eccentric drive 5 can be driven up and down by an adjustable stroke.
  • the tamper bar 4 has an inlet slope 6 on its front edge. The angle of the inlet slope 6 is preferably between 30 ° and 70 ° in order to achieve an optimal supply of to ensure the material to be installed.
  • the screed also has the material to be installed on one side feeding auger of the paver towards a front wall 7.
  • the Front wall 7 comprises a lower guide section 8, which leads to tamper bar 4 is inclined and ends adjacent to it.
  • the angle of inclination of the Guide section 8 suitably corresponds approximately to the angle of Entry slope 6 of the tamper bar 4.
  • Coils 10 provided with magnetizable core 9 are arranged on the bottom plate 1 .
  • the spools 10 can also be designed as air coils, ring coils or rod-shaped coils his. When using toroidal coils, the distance is closer To choose coil windings large enough so that the coil wire surrounding magnetic field for induction of eddy currents in the tamper bar 4 is sufficient.
  • coils 10 with a U-shaped magnetizable core 9 forms the tamper bar 4 the yoke for the core 9 and thus a short circuit for the magnetic field generated by the coil 10.
  • the core 9 can be completely or partially surrounded by the respective coil 10 his.
  • the U-shape of the magnetizable core 9 can also have a central leg have, which carries the coil 10.
  • Ferrites are particularly advantageous because of their low electrical Conductivity with high permeability only very small eddy current losses exhibit.
  • the Tamper bar 4 can be almost over the entire width of the Tamper bar 4 extending coil 10 may be provided, or according to Fig. 3 a plurality of coils 10 equidistant to each other across the width in the installation direction the tamper bar 4 can be arranged distributed.
  • the at least one coil 10 is like this arranged on the base plate 1 that the U-shaped core 9 with its free Ends adjacent to the tamper bar 4 along the front edge of the base plate 1 is arranged so that the tamper bar 4 the yoke to the respective core 9 of the Coils 10 forms.
  • the coil 10 from FIG. 2 can be connected to a Power source (not shown) may be connected.
  • the current source 11 can be a AC source or a three-phase source, and you can one Frequency converter 12 may be connected downstream.
  • the flowing in the coils 10 high-frequency current produces a periodically changing direction Magnetic field.
  • eddy currents in the Tamper bar 4 induced, whereby it is heated.
  • the base plate 1 can also be electrical be heatable. This electrical heating can be done using a resistance heater or by means of one or more heating cartridges or heating elements (ohmic Heating elements) take place, but the bottom plate 1 can also be analogous to the Tamper bar 4 are heated electromagnetically.
  • one or several coils can be arranged on the base plate 1, preferably Ring coils are used. Here is the distance between the coil windings to be sufficiently large so that the magnetic field surrounding the coil wire is sufficient to induce eddy currents in the base plate 1.
  • the coils can however, also have a U-shaped magnetizable core 9 or as Air coils can be formed.
  • the coils can also be connected to the current source 11 be connected so that they also with a high frequency current are acted upon. As a result of one flowing through the coils high-frequency current periodically changing magnetic field become eddy currents induced in the base plate 1, whereby the base plate 1 is electrically heated.
  • the coils 10 cannot be closed heating parts must be magnetically shielded.
  • two tamper bars can also be used Installation direction can be arranged one behind the other.
  • the in Installation direction of the front tamper bar (not shown) for pre-compression and the subsequent tamper bar 4 for further compression of the material to be installed.
  • they can Coils 10 may be provided with a U-shaped magnetizable core 9, the Front tamper bar forms the yoke to the core 9 of the coils 10.
  • the heating the front tamper bar then takes place in an analogous manner via eddy currents in response to a periodically changing magnetic field due to a by the on the front wall 7 arranged coils 10 flowing high-frequency current be induced in the front tamper bar.
  • the regulation of the thermal output of the tamper bar 4 or the base plate 1 can secondary or primary controllable or controllable via a control loop or via a thermostat with two-point control and / or via frequency control respectively.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Road Paving Machines (AREA)
  • General Induction Heating (AREA)
  • Road Paving Structures (AREA)
EP99110690A 1998-06-20 1999-06-02 Einbaubohle für einen Strassenfertiger Expired - Lifetime EP0965685B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19827577 1998-06-20
DE19827577A DE19827577C1 (de) 1998-06-20 1998-06-20 Einbaubohle für einen Straßenfertiger

Publications (3)

Publication Number Publication Date
EP0965685A2 EP0965685A2 (de) 1999-12-22
EP0965685A3 EP0965685A3 (de) 2001-03-14
EP0965685B1 true EP0965685B1 (de) 2004-03-10

Family

ID=7871536

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99110690A Expired - Lifetime EP0965685B1 (de) 1998-06-20 1999-06-02 Einbaubohle für einen Strassenfertiger

Country Status (7)

Country Link
US (1) US6124580A (zh)
EP (1) EP0965685B1 (zh)
JP (1) JP4083349B2 (zh)
CN (1) CN1148489C (zh)
BR (1) BR9903268A (zh)
CA (1) CA2275522C (zh)
DE (2) DE19827577C1 (zh)

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6318928B1 (en) * 2000-01-07 2001-11-20 Astec Industries, Inc. Method and apparatus for electrically heating a screed assembly in a paving machine
NL1016907C2 (nl) * 2000-12-18 2002-06-19 Vermeer Infrastructuur B V Wegconstructie en werkwijze voor het realiseren van een dergelijke wegconstructie.
GB0115039D0 (en) 2001-06-20 2001-08-08 Finning Uk Ltd Electrically heated paving screed
JP4097468B2 (ja) * 2002-06-20 2008-06-11 グローリー株式会社 介護用移動補助装置
US6981820B2 (en) * 2002-10-30 2006-01-03 Caterpillar Paving Products Inc. Screed heating arrangement
CA2515660A1 (en) * 2004-08-11 2006-02-11 Dirk Heims Vibratory paving screed for a paver
US7121763B1 (en) 2004-09-10 2006-10-17 Roadtec, Inc. Folding end gate for screed assembly
JP4330639B2 (ja) * 2006-03-29 2009-09-16 株式会社竹中工務店 アスファルト舗装体撤去方法、アスファルト舗装体撤去システム、電磁誘導コイルユニット、アスファルト舗装体撤去装置、及び剥離方法
DE102008007307A1 (de) * 2008-02-02 2009-08-06 Abg Allgemeine Baumaschinen-Gesellschaft Mbh Vorrichtung zum Verdichten von Straßenbaustoffen
DE102008007308B3 (de) * 2008-02-02 2009-08-13 Abg Allgemeine Baumaschinen-Gesellschaft Mbh Vorrichtung zum Verdichten von Straßenbaustoffen
WO2011006514A1 (en) * 2009-07-15 2011-01-20 Skf B.V. Modular induction heater system
IT1403029B1 (it) * 2010-11-12 2013-09-27 Marini Spa Banco di stesa con sistema di riscaldamento a induzione
CN102518026B (zh) * 2011-12-09 2014-10-01 西安建筑科技大学 一种具有均匀振幅的熨平板的摊铺机
US8371770B1 (en) * 2012-04-09 2013-02-12 Caterpillar Inc. Apparatus for tamping paving material
CN103352415B (zh) * 2013-06-18 2016-05-25 湖南三一路面机械有限公司 一种压实装置及摊铺机
EP2905378B1 (de) * 2014-02-07 2016-09-21 Joseph Vögele AG Tampervorrichtung
CN105019343A (zh) * 2014-04-16 2015-11-04 戴纳派克（中国）压实摊铺设备有限公司 熨平板及具有该熨平板的铺路机
DE102015012298A1 (de) * 2015-09-23 2017-03-23 Abg Allgemeine Baumaschinen-Gesellschaft Mbh Verfahren zum Betrieb eines selbstfahrenden Straßenfertigers und Straßenfertiger hierfür
US9915042B2 (en) * 2015-11-16 2018-03-13 Cutler Repaving, Inc. Multiple burner zone controlled asphalt heating hood
EP3170937B1 (en) * 2015-11-18 2018-09-19 BOMAG GmbH Road finisher, tamper bar for a road finisher, and method for manufacturing a tamper bar
EP3170938B1 (en) * 2015-11-18 2019-03-13 BOMAG GmbH Road finisher, piston rod for a road finisher, and method for manufacturing an assembly of a piston rod and a tamper bar
DE102017002010A1 (de) * 2017-03-03 2018-09-06 Dynapac Gmbh Verfahren zum Betreiben eines Straßenfertigers und Einbaubohle für einen Straßenfertiger
US11208770B2 (en) * 2017-10-06 2021-12-28 Volvo Construction Equipment Ab Screed arrangement

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL6911204A (zh) * 1968-09-17 1970-03-19
JPS62200119A (ja) * 1986-02-27 1987-09-03 Nippon Syst Apurikeeshiyon:Kk 床面蒸気加熱装置
JPS63186700A (ja) * 1987-01-28 1988-08-02 信濃電気株式会社 高周波誘導加熱装置
US5417516A (en) * 1993-07-20 1995-05-23 Universal Screed Inc. Electrically heated paving screed
DE4325868C2 (de) * 1993-08-02 1997-11-13 Junker Gmbh O Vorrichtung zum induktiven Längsfelderwärmen von flachem Metallgut
DE9313161U1 (de) * 1993-09-01 1993-10-28 Joseph Vögele AG, 68199 Mannheim Deckenfertiger und Werkzeug
JP2979388B2 (ja) * 1997-03-14 1999-11-15 金亀建設株式会社 敷き均し機械におけるスクリードプレートの加熱装置

Also Published As

Publication number Publication date
BR9903268A (pt) 2000-04-18
CA2275522A1 (en) 1999-12-20
DE59908794D1 (de) 2004-04-15
EP0965685A2 (de) 1999-12-22
CN1148489C (zh) 2004-05-05
CA2275522C (en) 2005-10-25
EP0965685A3 (de) 2001-03-14
US6124580A (en) 2000-09-26
JP4083349B2 (ja) 2008-04-30
DE19827577C1 (de) 1999-10-28
CN1240244A (zh) 2000-01-05
JP2000027117A (ja) 2000-01-25

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