EP0965685A2 - Einbaubohle für einen Strassenfertiger - Google Patents
Einbaubohle für einen Strassenfertiger Download PDFInfo
- Publication number
- EP0965685A2 EP0965685A2 EP99110690A EP99110690A EP0965685A2 EP 0965685 A2 EP0965685 A2 EP 0965685A2 EP 99110690 A EP99110690 A EP 99110690A EP 99110690 A EP99110690 A EP 99110690A EP 0965685 A2 EP0965685 A2 EP 0965685A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- coil
- screed
- tamper bar
- screed according
- base plate
- 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
Links
Images
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 spreading auger. Such screeds are linked to the paver via draw arms so that they can be installed on the paver 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 the wear part and the 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.
- Vibration drive coupled base plate seen in the direction of installation at least one extending transversely to the direction of installation by a drive up and down movable tamper bar is arranged, 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 and Space adapted.
- the power source can be an AC power source or a three-phase source, and it can be followed by a frequency converter be.
- 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. To magnetic To minimize field losses, the coils are preferably low spaced from the component to be heated. In particular, a coil on the front edge in the installation direction Base plate or be provided on the front wall of the screed, where the coil extends almost over the entire width of the base plate. Can also also several coils in the installation direction equidistant to each other on in Installation direction of the front edge of the base plate and / or the front wall be arranged.
- 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 installation direction 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 that is 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 if necessary solved 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, preferably via a support 2 with a vibration shaft 3 is connected, which is coupled to a vibration drive (not shown).
- Tamper bar 4 In the installation direction directly 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 on 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 be. 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 be.
- 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 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 Stamping 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)
Abstract
Description
Claims (15)
- Einbaubohle für einen Straßenfertiger mit einer gegebenenfalls mit einem Vibrationsantrieb gekoppelten Bodenplatte (1), vor der in Einbaurichtung gesehen mindestens eine sich quer zur Einbaurichtung erstreckende, durch einen Antrieb (5) auf- und abbewegliche Stampferleiste (4) angeordnet ist, die elektrisch beheizbar ist, dadurch gekennzeichnet, daß mindestens eine benachbart zur Stampferleiste (4) angeordnete Spule (10) vorgesehen ist, die über eine Stromquelle (11) mit einem hochfrequenten Strom beaufschlagbar ist, der Wirbelströme in der Stampferleiste (4) induziert.
- Einbaubohle nach Anspruch 1, dadurch gekennzeichnet, daß die Stampferleiste (4) einen Kurzschluß für das durch die wenigstens eine Spule (10) erzeugte Magnetfeld bildet.
- Einbaubohle nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die wenigstens eine Spule (10) einen magnetisierbaren U-förmigen Kern (9) aufweist.
- Einbaubohle nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß mehrere Spulen (10) in Einbaurichtung äquidistant zueinander angeordnet sind.
- Einbaubohle nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß die wenigstens eine Spule (10) auf der Bodenplatte (1) angeordnet ist.
- Einbaubohle nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß zwei Stampferleisten (4) in Einbaurichtung benachbart hintereinander angeordnet sind.
- Einbaubohle nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß mindestens eine Spule (10) an einer Vorderwand (7) der Einbaubohle angeordnet ist.
- Einbaubohle nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß der Stromquelle (11) ein Frequenzumrichter (12) nachgeschaltet ist.
- Einbaubohle nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, daß die Stromquelle (11) eine Wechselstromquelle ist.
- Einbaubohle nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, daß die Stromquelle (11) eine Drehstromquelle ist.
- Einbaubohle nach einem der Ansprüche 1 bis 12, dadurch gekennzeichnet, daß die wenigstens eine Spule (10) gegenüber nicht zu beheizenden Teilen abgeschirmt ist.
- Einbaubohle nach einem der Ansprüche 1 bis 11, dadurch gekennzeichnet, daß die Bodenplatte (1) elektrisch beheizbar ist.
- Einbaubohle nach einem der Ansprüche 1 bis 12, dadurch gekennzeichnet, daß mindestens eine benachbart zur Bodenplatte (1) angeordnete Spule vorgesehen ist, die über eine Stromquelle (11) mit einem hochfrequenten Strom beaufschlagbar ist, der Wirbelströme in der Bodenplatte (1) induziert.
- Einbaubohle nach Anspruch 13, dadurch gekennzeichnet, daß die Spule eine Ringspule ist.
- Einbaubohle nach einem der Ansprüche 1 bis 14, dadurch gekennzeichnet, daß ein Temperaturregler für die Stampferleiste (4) und/oder die Bodenplatte (1) vorgesehen ist.
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 true EP0965685A2 (de) | 1999-12-22 |
EP0965685A3 EP0965685A3 (de) | 2001-03-14 |
EP0965685B1 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 (de) |
EP (1) | EP0965685B1 (de) |
JP (1) | JP4083349B2 (de) |
CN (1) | CN1148489C (de) |
BR (1) | BR9903268A (de) |
CA (1) | CA2275522C (de) |
DE (2) | DE19827577C1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2018157966A1 (de) * | 2017-03-03 | 2018-09-07 | Dynapac Gmbh | Verfahren zum betreiben eines strassenfertigers und einbaubohle für einen strassenfertiger |
Families Citing this family (22)
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 (de) * | 2015-11-18 | 2018-09-19 | BOMAG GmbH | Strassenfertiger, tamperleiste für einen strassenfertiger und verfahren zur herstellung einer tamperleiste |
EP3170938B1 (de) * | 2015-11-18 | 2019-03-13 | BOMAG GmbH | Strassenfertiger, kolbenstange für einen strassenfertiger und verfahren zur herstellung einer anordnung von kolbenstange und stampferleiste |
US11208770B2 (en) * | 2017-10-06 | 2021-12-28 | Volvo Construction Equipment Ab | Screed arrangement |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0641887A1 (de) | 1993-09-01 | 1995-03-08 | Joseph Vögele AG | Deckenfertiger und Werkzeug |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL6911204A (de) * | 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 |
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 |
-
1998
- 1998-06-20 DE DE19827577A patent/DE19827577C1/de not_active Expired - Fee Related
-
1999
- 1999-06-02 DE DE59908794T patent/DE59908794D1/de not_active Expired - Lifetime
- 1999-06-02 EP EP99110690A patent/EP0965685B1/de not_active Expired - Lifetime
- 1999-06-17 CN CNB991086392A patent/CN1148489C/zh not_active Expired - Fee Related
- 1999-06-18 JP JP17321799A patent/JP4083349B2/ja not_active Expired - Fee Related
- 1999-06-18 BR BR9903268-6A patent/BR9903268A/pt not_active IP Right Cessation
- 1999-06-18 CA CA002275522A patent/CA2275522C/en not_active Expired - Fee Related
- 1999-06-18 US US09/336,475 patent/US6124580A/en not_active Expired - Lifetime
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0641887A1 (de) | 1993-09-01 | 1995-03-08 | Joseph Vögele AG | Deckenfertiger und Werkzeug |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2018157966A1 (de) * | 2017-03-03 | 2018-09-07 | Dynapac Gmbh | Verfahren zum betreiben eines strassenfertigers und einbaubohle für einen strassenfertiger |
Also Published As
Publication number | Publication date |
---|---|
BR9903268A (pt) | 2000-04-18 |
CA2275522A1 (en) | 1999-12-20 |
EP0965685B1 (de) | 2004-03-10 |
DE59908794D1 (de) | 2004-04-15 |
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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