EP3241947A1 - Screed with a fastening device for a heating element - Google Patents
Screed with a fastening device for a heating element Download PDFInfo
- Publication number
- EP3241947A1 EP3241947A1 EP16167878.4A EP16167878A EP3241947A1 EP 3241947 A1 EP3241947 A1 EP 3241947A1 EP 16167878 A EP16167878 A EP 16167878A EP 3241947 A1 EP3241947 A1 EP 3241947A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- screed
- heating element
- plate
- elastic
- clamping
- 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- Withdrawn
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Classifications
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- 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
- E01C19/405—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 spreading-out, levelling or smoothing means other than the tamping or vibrating means for compacting or smoothing, e.g. with screws for spreading-out the previously dumped material, with non-vibratory lengthwise reciprocated smoothing beam
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- 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
- E01C23/00—Auxiliary devices or arrangements for constructing, repairing, reconditioning, or taking-up road or like surfaces
- E01C23/14—Auxiliary devices or arrangements for constructing, repairing, reconditioning, or taking-up road or like surfaces for heating or drying foundation, paving, or materials thereon, e.g. paint
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- 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
- E01C19/48—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 laying-down the materials and consolidating them, or finishing the surface, e.g. slip forms therefor, forming kerbs or gutters in a continuous operation in situ
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- 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
- E01C19/48—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 laying-down the materials and consolidating them, or finishing the surface, e.g. slip forms therefor, forming kerbs or gutters in a continuous operation in situ
- E01C19/4866—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 laying-down the materials and consolidating them, or finishing the surface, e.g. slip forms therefor, forming kerbs or gutters in a continuous operation in situ with solely non-vibratory or non-percussive pressing or smoothing means for consolidating or finishing
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- 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
-
- 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 according to the preamble of claim 1.
- Screeds for use on road pavers are known in practice. They are used when laying pavements, e.g. can consist of bituminous asphalt used. They serve to smooth and compact the lining. Since the paving material is laid hot, screeds sometimes have heating elements that, for example, heat screed plates that slide over the material during laying.
- heating elements can be clamped by means of screws against a screed plate.
- This fastening method has the disadvantage that if the screws are tightened too tightly, the heating elements can be damaged.
- the object of the invention is to provide a screed available that allows a safe and yet easy mounting of heating elements with the help of structurally simple changes possible.
- the screed according to the invention for a paver comprises a screed plate, a heating element and a fastening device for pressing the heating element to the screed plate.
- the screed according to the invention is characterized in that the fastening device comprises an actuator and an elastic element, wherein the actuating member is adapted to deflect by its operation, the elastic element directly or indirectly by a predetermined extent, whereby the elastic member directly or a predetermined force indirectly exerts on the heating element and this biases against the screed plate.
- the elastic element is a linearly elastic element. Under deflection or deflection is to be understood in the present application in particular the compression or elongation of an elastic element.
- any geometric change of the elastic element is to be detected, which results in the exertion of a force by the elastic element.
- any geometric change of the elastic element according to the invention can be attributed to a certain force exerted by the elastic element, so that a certain geometric change reliably results in the exertion of a force associated with this change.
- the actuator may for example comprise a thread and / or a cam.
- a threaded actuator is a screw.
- a cam actuator it may be e.g. to act an eccentric lever.
- Conceivable is any suitable actuator whose operation has a defined geometric displacement result.
- Conceivable variants of the elastic element are the following: a spring, e.g. a coil spring, a coil spring, a spring plate, a plate spring, a bending spring, a leaf spring and / or a torsion spring.
- the fastening device further comprises an alignment aid, which is adapted to align the actuator to an engagement point.
- an alignment aid which is adapted to align the actuator to an engagement point. Since elastic elements, depending on the point of action of a structure acting on them, can escape due to their elasticity in unwanted directions, the orientation of the actuator to a designated engagement point may be particularly important.
- the point of engagement may be e.g. be provided on the elastic element.
- the engagement point, on which the actuator is aligned by means of the alignment is provided on another component, for example, when the elastic member is deflected indirectly by the operation of the actuator by a predetermined amount.
- alignment aids any suitable types of guides are conceivable.
- the actuator is a screw
- the thread length is a suitable parameter to limit the extent as desired.
- the length from the thread root to the head is a suitable parameter for limiting the extent to which the elastic element is deflectable by the actuator.
- this cam can be configured such that during any actuation the maximum deflection corresponds to the predetermined extent. It when the actuator after reaching the predetermined extent can only be moved in a direction opposite to the original direction of actuation direction is particularly advantageous.
- a positioning aid which is arranged to arrange and / or to hold the heating element at a predetermined position.
- a positioning aid may for example be adapted to guide the heating element in the arrangement at the designated position on the screed plate and the operator so the correct To facilitate assembly.
- the positioning aid may also be arranged to hold the heating element at the predetermined position and to prevent it, for example, moves by vibrations from this position.
- various locking connections, snap connections, guides and / or stops are conceivable.
- the fastening device comprises a clamping device which transmits the force exerted by the elastic element to the heating element.
- the clamping device may for example be adapted to the shape of the heating element and have one or more points of attack for the elastic element or operated by this other components.
- the clamping device may for example have a clamping plate.
- the fastening device may comprise a clamping device which transmits the force exerted by the elastic element on the heating element, and on which a positioning aid is provided, which is adapted to arrange the heating element at a Poistiton and / or hold.
- a positioning aid is provided, which is adapted to arrange the heating element at a Poistiton and / or hold.
- a clamping device positioning aid is provided which is adapted to arrange and / or to hold the clamping device at a predetermined position.
- the clamp positioning aid may have similar functionalities and / or structures as the above-described positioning aid for the heating element.
- a magnetic element which is adapted to mount the heating element by magnetic force on the screed plate, or to arrange / hold the heating element at a predetermined position.
- the magnetic element may, for example, comprise an electromagnet and / or a permanent magnet.
- the magnetic element may also be provided in addition and / or additionally as a positioning aid
- a hook and loop fastener is provided, which is adapted to mount the heating element on the screed plate, or to arrange / hold the heating element at a predetermined position.
- the heating element between the screed plate and a clamping element in particular a clamping plate, be arranged, wherein the screed plate and the Clamping element can be connected to tension springs, which can be biased by the arrangement of the heating element between the clamping element and the screed plate and thus can press the heating element to the screed plate.
- the invention also relates to a paver comprising a tractor and a screed of the type described above.
- the invention also relates to a construction machine with an asphalt recycling vehicle and a screed of the type described above.
- heating elements to screed plates can also be based on other principles of action.
- a heating element by magnetic forces e.g. applied by permanent magnets or electromagnets
- An attachment without the fastening device according to the invention by means of a hook and loop fastener is conceivable.
- attachment types in which a heating element between the screed plate and a clamping element, e.g. a clamping plate, wherein the screed plate and the clamping element are connected to tension springs, which are biased by arranging the heating element between the clamping element and the screed plate and thus press the heating element to the screed plate.
- This type of attachment can be provided without the fastening device according to the invention.
- Fig. 1 shows a side view of a road finisher according to the invention. Its direction of travel is indicated by R. It comprises a tractor 2. This has a Mischgutbunker 3, in the example asphalt mix can be filled. This mix can be transported by a conveyor system (not shown) counter to the direction of travel R of the paver 1 to the rear end of the tractor 2. There it can be distributed in front of a screed 4 of the paver 1.
- the screed 4 may be mounted by support arms 5 pivotally mounted on the tractor 2.
- the support arms 5 may be connected to traction points 6 with the tractor 2.
- the traction points 6 can then also represent the center point for the pivoting movement of the support arms 5.
- the height of the tow points can be adjusted by an adjusting cylinder 7.
- the screed 4 is used in particular for smoothing the mix.
- Fig. 2 is a detailed view of a smoothing assembly 8 of the screed 4 is shown. It may comprise a screed plate 9, which may be attached to a frame 10.
- the frame 10 can be a frame of the smoothing assembly 8, or else a structural frame of the screed 4.
- the screed plate 9 can be heated by a heating element 11.
- the heating element 11 may be pressed by a fastening device 12 to the screed plate 9.
- the fastening device 12 comprises an actuating element 13 in the form of a screw 13a, an elastic element 14 in the form of a bending plate 14a, an alignment aid 15 and a clamping device 16 in the form of a clamping plate 16.
- the clamping plate 16 By the connection of the elastic element 14, in the present embodiment of the bending plate 14, with the clamping device 16, in the present embodiment, the clamping plate 16, a force can be exerted on the heating element 11, and so the heating element 11 are biased against the screed plate 9.
- the fastening device 12 can be designed so that the clamping device 16 acts on the heating element 11 with a predetermined force. This force can be chosen so that damage to all components of the smoothing unit 8 and in particular damage to the heating element 11, reliably prevented, however, a secure clamping of the heating element 11 is still guaranteed.
- the predetermined force with which it is intended to act on the heating element 11 may be associated with a predetermined deflection of the elastic element 14, in the present embodiment of the bending plate 14a.
- the fastening device 12 can be designed such that upon actuation of the actuating member 13, ie in the present embodiment by screwing the screw 13a, this predetermined deflection is not exceeded.
- the length of the screw 13a can be chosen such that a screw head 17 of the screw 13a abuts the frame 10 precisely when the screw 13a has deflected the bending plate 14 by the predetermined amount.
- an alignment aid 15 is additionally provided. This can serve to align the actuator 13, ie, in the present embodiment, the screw 13 a, to an engagement point 18. In this way, slipping of the actuator 13 from just this engagement point 18 can be prevented.
- the engagement point 18 may be provided on the elastic element 14.
- the elastic member 14, that is, in the present embodiment, the bending plate 14 a may also be provided without the alignment aid 15. This is in Fig. 3b shown.
- Fig. 4 shows a further embodiment of the fastening device 12.
- a cam 13b is provided here.
- two different elastic elements 14 are provided, namely a spiral or coil spring 14b and a plate spring stack 14c.
- the actuator 13 in the form of the cam 13b actuated in the in Fig. 4 embodiment shown not directly the elastic members 14b and 14c.
- the intermediate member 19 is arranged so that it can deflect a plurality of distributed elastic elements 14.
- the cam 13b is shown in the present embodiment as a body with an oval cross section, which is rotatable about an axis of rotation 20.
- the boundary of the cross section of the cam 13b resembles an ellipse having a major and a minor axis
- oval is as used above in the mathematical sense, i. as a closed twice continuously differentiable convex curve in the plane.
- this broad description is to be regarded as merely exemplary of the shape of the cam.
- the length of the major half axis of the ellipse corresponds to the predetermined amount by which the elastic members 14, 14b, 14c are to be deflected.
- the deflection of the elastic members 14, 14b, 14c is restricted to this predetermined extent.
- the axis of rotation 20 about which the cam 13b is rotated is perpendicular to the direction of deflection of the elastic elements 14, 14b, 14c.
- the axis of rotation 20 is parallel to the deflection direction or in any other direction.
- FIGS. 5a and 5b show schematic views of another embodiment of the fastening device 12.
- a clamping device 16 a heating element 11 and a screed plate 9 can be seen.
- a positioning aid 21 is provided at the clamping device 16. This can help in the positioning of the heating element 11.
- the positioning aid 21 is provided as a recess 21 a in the form of clamping plate 16 a clamping device 16.
- the positioning aid 21 may also be provided on other components or structures of the screed 4.
- a clamping device positioning aid 22 is provided.
- This has in the exemplary embodiment, two locking body 23. It is however an arbitrary number Of locking bodies 23 conceivable.
- the latching body 23 can be inserted into latching openings 24, which are provided in the clamping device 16.
- the latching body 23 may be spring loaded to snap into the latching openings 24.
- the or the elastic elements 14 can be used.
- separate spring elements are provided, which serve only the purpose of spring loading of the locking body 23.
- Fig. 5b is a plan view from below, as indicated by the section line SS, the components off Fig. 5a shown.
- the screed plate 9 is in Fig. 5b not shown.
- locking body 23 In the Fig. 6a to 6c Further embodiments of locking body 23 are shown. As can be seen from the figures, it may be a rounded locking body as in Fig. 6a shown, a pointed catch body 23 as in Fig. 6b represented, or even to a blunt locking body 23 as in Fig. 6c act acted.
- the cross section perpendicular to the deflection direction can have any shape. Particularly useful round cross sections have been found. However, rectangular cross sections are also conceivable.
- Rast stresses like those in the Fig. 6a to 6c or in the Fig. 5a can be provided both as a positioning aid for the heating element 11 and as Klemmvoriquesspositionier Anlagen 22.
- an alignment aid 15 for aligning the actuator 13 on an engagement point may include such locking body.
- a further embodiment of a positioning aid 21 is shown.
- the heating element 11, the elastic elements 14, the clamping device 16 and the screed plate 9 can be seen.
- a recess 21 b is provided in the screed plate 9.
- the heating element 11 can be inserted into this and be biased by means of the clamping device 16 and the elastic members 14 in this recess 21 b.
- the heating element 11 can thus be arranged and / or held at a predetermined position.
- This in Fig. 7 illustrated embodiment meets in particular two functionalities, namely on the one hand a backup against unwanted slippage of the heating element against the screed plate 9 and on the other hand, the feedback to the operator who pushes the heating element 11 to the intended location that the intended location is reached.
- Fig. 8 shows a further embodiment of a positioning 21. It is conceivable that the view of Fig. 8 may be a top view as well as a side view.
- a positioning aid here is a two-dimensional abutment gate 21 c is provided, which leads by means of a suitably shaped guide surface 25, the heating element 11 in a predetermined position.
- the shape of the guide surface can correspond to the outer contour of the heating element 11.
- Fig. 8 shows a top view from above.
- parts of the screed plate 9 (shown in solid lines) are covered by the heating rod and the stop cam 21 c.
- the stop cam 21 c may be attached to the screed plate 9.
- the positioning aid 21 can ensure the correct positioning of the heating element 11 in the two directions of the plane which runs parallel to the screed plate 9.
- the clamping device 16 (not shown for this embodiment) in a plan view from above has the same outer contour as the heating element 11 and the stop cam 21 c has a sufficient height, both for the heating element 11 and simultaneously for the clamping device 16 to form a stop and thus to ensure that both are congruently positioned one above the other.
- Fig. 8 a side view of the Anzziskulisse 21 c and the heating element 11 represents.
- the arrangement of the Glättblechs 9 and the clamping device 16 are shown in this case by dashed lines. In this case, the correct positioning of the heating element in a direction parallel and in a direction perpendicular to the screed plate 9 can be ensured.
- Fig. 9 shows an alternative construction for biasing a heating element 11 against a screed plate 9.
- An actuator is not provided here. Rather, the deflection of elastic elements 26 is ensured here by the interaction of the heating element 11 and the clamping device 16, so that the elastic elements 26 exert a force on the heating element 11 via the clamping device 16, which biases the heating element 11 against the screed plate 9.
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- Road Paving Machines (AREA)
Abstract
Die Erfindung bezieht sich auf eine Einbaubohle (4) für einen Straßenfertiger (1), die ein Glättblech (9), ein Heizelement (11) und eine Befestigungsvorrichtung (12) zum Andrücken des Heizelements (11) an das Glättblech (9) umfasst. Die Erfindung zeichnet sich dadurch aus, dass die Befestigungsvorrichtung (12) ein Betätigungsglied (13) und ein elastisches Element (14) umfasst, wobei das Betätigungsglied (13) dazu eingerichtet ist, durch seine Betätigung das elastische Element (14) direkt oder indirekt um ein vorbestimmtes Ausmaß auszulenken, wodurch das elastische Element (14) eine vorbestimmte Kraft direkt oder indirekt auf das Heizelement (11) ausübt und dieses gegen das Glättblech (9) vorspannt.The invention relates to a screed (4) for a paver (1) comprising a screed plate (9), a heating element (11) and a fastening device (12) for pressing the heating element (11) against the screed plate (9). The invention is characterized in that the fastening device (12) comprises an actuating member (13) and an elastic element (14), wherein the actuating member (13) is adapted, by its operation, the elastic element (14) directly or indirectly around to deflect a predetermined amount, whereby the elastic element (14) exerts a predetermined force directly or indirectly on the heating element (11) and biases it against the screed plate (9).
Description
Die Erfindung bezieht sich auf eine Einbaubohle gemäß dem Oberbegriff des Anspruchs 1.The invention relates to a screed according to the preamble of
Einbaubohlen zum Einsatz an Straßenfertigern sind aus der Praxis bekannt. Sie werden beim Verlegen von Straßenbelägen, die z.B. aus bitumenhaltigem Asphalt bestehen können, eingesetzt. Sie dienen dabei zum Glätten und Verdichten des Belags. Da das Straßenbelagsmaterial heiß verlegt wird, weisen Einbaubohlen mitunter Heizelemente auf, die beispielsweise Glättbleche, die beim Verlegen über das Material gleiten, erhitzen.Screeds for use on road pavers are known in practice. They are used when laying pavements, e.g. can consist of bituminous asphalt used. They serve to smooth and compact the lining. Since the paving material is laid hot, screeds sometimes have heating elements that, for example, heat screed plates that slide over the material during laying.
Wie beispielsweise aus der
Aufgabe der Erfindung ist es, eine Einbaubohle zur Verfügung zu stellen, die mit Hilfe von konstruktiv möglichst einfachen Veränderungen ein sicheres und dennoch einfaches Montieren von Heizelementen ermöglicht.The object of the invention is to provide a screed available that allows a safe and yet easy mounting of heating elements with the help of structurally simple changes possible.
Diese Aufgabe wird erfindungsgemäß gelöst mit den Merkmalen des unabhängigen Anspruchs 1.This object is achieved according to the invention with the features of the
Die erfindungsgemäße Einbaubohle für einen Straßenfertiger umfasst ein Glättblech, ein Heizelement und eine Befestigungsvorrichtung zum Andrücken des Heizelements an das Glättblech. Die erfindungsgemäße Einbaubohle zeichnet sich dadurch aus, dass die Befestigungsvorrichtung ein Betätigungsglied und ein elastisches Element umfasst, wobei das Betätigungsglied dazu eingerichtet ist, durch seine Betätigung das elastische Element direkt oder indirekt um ein vorbestimmtes Ausmaß auszulenken, wodurch das elastische Element eine vorbestimmte Kraft direkt oder indirekt auf das Heizelement ausübt und dieses gegen das Glättblech vorspannt. Vorzugsweise handelt es sich bei dem elastischen Element um ein linear elastisches Element. Unter Auslenkung bzw. Auslenken ist in der vorliegenden Anmeldung insbesondere die Komprimierung oder Dehnung eines elastischen Elements zu verstehen. Im Allgemeinen soll jedoch jegliche geometrische Veränderung des elastischen Elements erfasst sein, die das Ausüben einer Kraft durch das elastische Element zur Folge hat. Vorzugsweise kann jeder geometrischen Veränderung des erfindungsgemäßen elastischen Elements eine bestimmte Kraft, die durch das elastische Element ausgeübt wird, zugeordnet werden, sodass eine bestimmte geometrische Veränderung zuverlässig das Ausüben einer dieser Veränderung zugeordneten Kraft zur Folge hat.The screed according to the invention for a paver comprises a screed plate, a heating element and a fastening device for pressing the heating element to the screed plate. The screed according to the invention is characterized in that the fastening device comprises an actuator and an elastic element, wherein the actuating member is adapted to deflect by its operation, the elastic element directly or indirectly by a predetermined extent, whereby the elastic member directly or a predetermined force indirectly exerts on the heating element and this biases against the screed plate. Preferably, the elastic element is a linearly elastic element. Under deflection or deflection is to be understood in the present application in particular the compression or elongation of an elastic element. In general, however, any geometric change of the elastic element is to be detected, which results in the exertion of a force by the elastic element. Preferably, any geometric change of the elastic element according to the invention can be attributed to a certain force exerted by the elastic element, so that a certain geometric change reliably results in the exertion of a force associated with this change.
Das Betätigungsglied kann beispielsweise ein Gewinde und/oder einen Nocken umfassen. Ein mögliches Beispiel für ein ein Gewinde umfassendes Betätigungsglied ist eine Schraube. Bei einem einen Nocken aufweisenden Betätigungsglied kann es sich z.B. um einen Exzenterhebel handeln. Denkbar ist jedoch jedes geeignete Betätigungsglied, dessen Betätigung eine definierte geometrische Verschiebung zur Folge hat. Denkbare Varianten des elastischen Elements sind die folgenden: eine Feder, wie z.B. eine Schraubenfeder, eine Spiralfeder, ein Federblech, eine Tellerfeder, eine Biegefeder, eine Blattfeder und/oder eine Torsionsfeder.The actuator may for example comprise a thread and / or a cam. One possible example of a threaded actuator is a screw. For a cam actuator, it may be e.g. to act an eccentric lever. Conceivable, however, is any suitable actuator whose operation has a defined geometric displacement result. Conceivable variants of the elastic element are the following: a spring, e.g. a coil spring, a coil spring, a spring plate, a plate spring, a bending spring, a leaf spring and / or a torsion spring.
Es ist vorteilhaft, wenn die Befestigungseinrichtung des Weiteren eine Ausrichthilfe aufweist, die dazu eingerichtet ist, das Betätigungsglied auf eine Eingriffsstelle auszurichten. Da elastische Elemente abhängig von dem Angriffspunkt einer auf sie wirkenden Struktur aufgrund ihrer Elastizität in ungewollte Richtungen ausweichen können, kann die Ausrichtung des Betätigungsglieds auf eine dafür vorgesehene Eingriffsstelle besonders wichtig sein. Je nach Ausgestaltung der Befestigungsvorrichtung kann die Eingriffsstelle z.B. an dem elastischen Element vorgesehen sein. Es ist jedoch auch denkbar, dass die Eingriffsstelle, auf die das Betätigungsglied mit Hilfe der Ausrichthilfe ausgerichtet wird, an einem weiteren Bauteil vorgesehen ist, beispielsweise wenn das elastische Element durch die Betätigung des Betätigungsglieds indirekt um ein vorbestimmtes Ausmaß ausgelenkt wird. Als Ausrichthilfen sind beliebige geeignete Arten von Führungen denkbar.It is advantageous if the fastening device further comprises an alignment aid, which is adapted to align the actuator to an engagement point. Since elastic elements, depending on the point of action of a structure acting on them, can escape due to their elasticity in unwanted directions, the orientation of the actuator to a designated engagement point may be particularly important. Depending on the configuration of the fastening device, the point of engagement may be e.g. be provided on the elastic element. However, it is also conceivable that the engagement point, on which the actuator is aligned by means of the alignment, is provided on another component, for example, when the elastic member is deflected indirectly by the operation of the actuator by a predetermined amount. As alignment aids any suitable types of guides are conceivable.
Es ist zweckmäßig, wenn das Ausmaß, um welches das elastische Element durch das Betätigungsglied auslenkbar ist, auf das vorbestimmte Ausmaß begrenzt ist. Auf diese Art können Fehlbedienungen vermieden werden, da keine Möglichkeit besteht, dass das elastische Element um ein zu großes Ausmaß ausgelenkt wird. Für den Fall, dass es sich bei dem Betätigungsglied um eine Schraube handelt, ist beispielsweise die Gewindelänge ein geeigneter Parameter, um das Ausmaß wie gewünscht zu begrenzen. Auch die Länge vom Gewindeanfang bis zum Kopf ist ein geeigneter Parameter zur Begrenzung des Ausmaßes, um welches das elastische Element durch das Betätigungsglied auslenkbar ist. Bei Betätigungsgliedern mit Nocken kann dieser Nocken derart ausgestaltet sein, dass bei jeglicher Betätigung die maximale Auslenkung dem vorbestimmten Ausmaß entspricht. Besonders vorteilhaft ist es, wenn das Betätigungsglied nach Erreichen des vorbestimmten Ausmaßes nur noch in eine der ursprünglichen Betätigungsrichtung entgegengesetzten Richtung bewegt werden kann.It is useful if the extent to which the elastic element is deflectable by the actuator is limited to the predetermined extent. In this way, incorrect operations can be avoided because there is no possibility that the elastic element is deflected by a large amount. For example, in the case where the actuator is a screw, the thread length is a suitable parameter to limit the extent as desired. Also, the length from the thread root to the head is a suitable parameter for limiting the extent to which the elastic element is deflectable by the actuator. For actuators with cams, this cam can be configured such that during any actuation the maximum deflection corresponds to the predetermined extent. It when the actuator after reaching the predetermined extent can only be moved in a direction opposite to the original direction of actuation direction is particularly advantageous.
Es kann zweckmäßig sein, wenn eine Positionierhilfe vorgesehen ist, die dazu eingerichtet ist, das Heizelement an einer vorbestimmten Position anzuordnen und/oder zu halten. Eine solche Positionierhilfe kann beispielsweise dazu eingerichtet sein, das Heizelement bei der Anordnung an der dafür vorgesehenen Position am Glättblech zu führen und dem Bediener so die korrekte Montage zu erleichtern. Die Positionierhilfe kann ebenfalls dazu eingerichtet sein, das Heizelement an der vorbestimmten Position zu halten und zu verhindern, dass es sich beispielsweise durch Vibrationen aus dieser Position fortbewegt. Dazu sind beispielsweise verschiedene Rastverbindungen, Schnappverbindungen, Führungen und/oder Anschläge denkbar.It may be expedient if a positioning aid is provided which is arranged to arrange and / or to hold the heating element at a predetermined position. Such a positioning aid may for example be adapted to guide the heating element in the arrangement at the designated position on the screed plate and the operator so the correct To facilitate assembly. The positioning aid may also be arranged to hold the heating element at the predetermined position and to prevent it, for example, moves by vibrations from this position. For this purpose, for example, various locking connections, snap connections, guides and / or stops are conceivable.
Es kann außerdem vorteilhaft sein, wenn die Befestigungsvorrichtung eine Klemmvorrichtung umfasst, die die durch das elastische Element ausgeübte Kraft auf das Heizelement überträgt. Dies ist insbesondere dann vorteilhaft, wenn die Form des Heizelements und die des elastischen Elements voneinander abweichen. Die Klemmvorrichtung kann beispielsweise an die Form des Heizelements angepasst sein und eine oder mehrere Angriffsstellen für das elastische Element oder für von diesem betätigte weitere Bauteile aufweisen. Die Klemmvorrichtung kann beispielsweise ein Klemmblech aufweisen.It may also be advantageous if the fastening device comprises a clamping device which transmits the force exerted by the elastic element to the heating element. This is particularly advantageous if the shape of the heating element and the elastic element differ from each other. The clamping device may for example be adapted to the shape of the heating element and have one or more points of attack for the elastic element or operated by this other components. The clamping device may for example have a clamping plate.
In einer weiteren Variante kann die Befestigungsvorrichtung eine Klemmvorrichtung umfassen, die die durch das elastische Element ausgeübte Kraft auf das Heizelement überträgt, und an der eine Positionierhilfe vorgesehen ist, die dazu eingerichtet ist, das Heizelement an einer Poistiton anzuordnen und/oder zu halten. In dieser Variante sind die Funktionen der vorbeschriebenen Klemmvorrichtung und der ebenfalls vorbeschriebenen Positionierhilfe in ein und demselben Bauteil bzw. in einer und derselben Baugruppe vorgesehen und deren Vorteile folglich kombiniert.In a further variant, the fastening device may comprise a clamping device which transmits the force exerted by the elastic element on the heating element, and on which a positioning aid is provided, which is adapted to arrange the heating element at a Poistiton and / or hold. In this variant, the functions of the above-described clamping device and also the above-described positioning aid are provided in one and the same component or in one and the same assembly and their advantages are consequently combined.
Es ist denkbar, dass eine Klemmvorrichtungspositionierhilfe vorgesehen ist, die dazu eingerichtet ist, die Klemmvorrichtung an einer vorbestimmten Position anzuordnen und/oder zu halten. Die Klemmvorrichtungspositionierhilfe kann ähnliche Funktionalitäten und/oder Strukturen aufweisen wie die vorbeschriebene Positionierhilfe für das Heizelement.It is conceivable that a clamping device positioning aid is provided which is adapted to arrange and / or to hold the clamping device at a predetermined position. The clamp positioning aid may have similar functionalities and / or structures as the above-described positioning aid for the heating element.
Es kann vorteilhaft sein, wenn ein Magnetelement vorgesehen ist, das dazu eingerichtet ist, das Heizelement durch Magnetkraft an dem Glättblech zu montieren, oder das Heizelement an einer vorbestimmten Position anzuordnen/zu halten. Das Magnetelement kann beispielsweise einen Elektromagneten und/oder einen Permanentmagneten aufweisen. Das Magnetelement kann außerdem und/oder zusätzlich als Positionierhilfe vorgesehen seinIt may be advantageous if a magnetic element is provided which is adapted to mount the heating element by magnetic force on the screed plate, or to arrange / hold the heating element at a predetermined position. The magnetic element may, for example, comprise an electromagnet and / or a permanent magnet. The magnetic element may also be provided in addition and / or additionally as a positioning aid
Es ist außerdem vorstellbar, dass ein Klettverschluss vorgesehen ist, der dazu eingerichtet ist, das Heizelement an dem Glättblech zu montieren, oder das Heizelement an einer vorbestimmten Position anzuordnen/zu halten.It is also conceivable that a hook and loop fastener is provided, which is adapted to mount the heating element on the screed plate, or to arrange / hold the heating element at a predetermined position.
In einer weiteren Variante kann das Heizelement zwischen dem Glättblech und einem Klemmelement, insbesondere einem Klemmblech, angeordnet sein, wobei das Glättblech und das Klemmelement mit Zugfedern verbunden sein kann, die durch das Anordnen des Heizelements zwischen dem Klemmelement und dem Glättblech vorgespannt werden können und das Heizelement somit an das Glättblech andrücken können.In a further variant, the heating element between the screed plate and a clamping element, in particular a clamping plate, be arranged, wherein the screed plate and the Clamping element can be connected to tension springs, which can be biased by the arrangement of the heating element between the clamping element and the screed plate and thus can press the heating element to the screed plate.
Die Erfindung bezieht sich auch auf einen Straßenfertiger, der eine Zugmaschine und eine Einbaubohle der vorstehend beschriebenen Art umfasst.The invention also relates to a paver comprising a tractor and a screed of the type described above.
Außerdem bezieht sich die Erfindung auch auf eine Baumaschine mit einem Asphaltrecyclingfahrzeug und einer Einbaubohle der vorstehend beschriebenen Art.In addition, the invention also relates to a construction machine with an asphalt recycling vehicle and a screed of the type described above.
Die Befestigung von Heizelementen an Glättblechen kann auch auf anderen Wirkprinzipien basieren. So ist z.B. denkbar, dass ein Heizelement durch magnetische Kräfte, z.B. durch Permanentmagneten oder Elektromagneten aufgebracht, ohne die erfindungsgemäße Befestigungsvorrichtung an einem Glättblech befestigt werden kann. Auch eine Befestigung ohne die erfindungsgemäße Befestigungsvorrichtung mittels eines Klettverschlusses ist denkbar.The attachment of heating elements to screed plates can also be based on other principles of action. For example, e.g. conceivable that a heating element by magnetic forces, e.g. applied by permanent magnets or electromagnets, without the fastening device according to the invention can be attached to a screed plate. An attachment without the fastening device according to the invention by means of a hook and loop fastener is conceivable.
Möglich sind auch Befestigungsarten, bei denen ein Heizelement zwischen dem Glättblech und einem Klemmelement, z.B. einem Klemmblech, angeordnet ist, wobei das Glättblech und das Klemmelement mit Zugfedern verbunden sind, die durch das Anordnen des Heizelements zwischen dem Klemmelement und dem Glättblech vorgespannt werden und das Heizelement somit an das Glättblech andrücken. Auch diese Art der Befestigung kann ohne die erfindungsgemäße Befestigungsvorrichtung vorgesehen werden.Also possible are attachment types in which a heating element between the screed plate and a clamping element, e.g. a clamping plate, wherein the screed plate and the clamping element are connected to tension springs, which are biased by arranging the heating element between the clamping element and the screed plate and thus press the heating element to the screed plate. This type of attachment can be provided without the fastening device according to the invention.
Im Folgenden wird die Erfindung anhand von Zeichnungen näher erläutert.
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Fig. 1 zeigt eine Seitenansicht eines erfindungsgemäßen Straßenfertigers mit einer erfindungsgemäßen Einbaubohle. -
Fig. 2 zeigt eine Detailansicht von Teilen der Einbaubohle aus und dabei insbesondere ein Ausführungsbeispiel der Befestigungsvorrichtung mit einem Klemmblech.Figur 1 -
Fig. 3a zeigt ein Klemmblech ausFig. 2 mit einem elastischen Element und einer Ausrichthilfe. -
Fig. 3b zeigt eine Variante der inFig. 3a gezeigten Baugruppe ohne Ausrichthilfe. -
Fig. 4 zeigt eine Befestigungsvorrichtung nach einem weiteren Ausführungsbeispiel der Erfindung. -
Fig. 5a zeigt eine Klemmvorrichtung gemäß einem weiteren Ausführungsbeispiel der Erfindung, das sowohl eine Positionierhilfe für ein Heizelement als auch eine Klemmvorrichtungspositionierhilfe aufweist. -
Fig. 5b zeigt verschiedene Bauteile ausFig. 5a in einer Draufsicht von unten. -
Fig. 6a-c zeigen verschiedene Ausführungsbeispiele von Rastkörpern, die als Ausrichthilfe und/oder als Positionierhilfe eingesetzt werden können. -
Fig. 7 zeigt ein weiteres Ausführungsbeispiel für eine Positionierhilfe für ein Heizelement. -
Fig. 8 zeigt ein weiteres Ausführungsbeispiel für eine Positionierhilfe für ein Heizelement bzw. für eine Klemmvorrichtungspositionierhilfe. -
Fig.9 zeigt eine alternative Befestigungsvorrichtung zum Andrücken eines Heizelements an ein Glättblech.
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Fig. 1 shows a side view of a road finisher according to the invention with a screed according to the invention. -
Fig. 2 shows a detailed view of parts of the screedFIG. 1 and in particular an embodiment of the fastening device with a clamping plate. -
Fig. 3a shows a clamping plateFig. 2 with an elastic element and an alignment aid. -
Fig. 3b shows a variant of inFig. 3a shown assembly without alignment aid. -
Fig. 4 shows a fastening device according to another embodiment of the invention. -
Fig. 5a shows a clamping device according to another embodiment of the invention, which has both a positioning aid for a heating element and a clamping device positioning aid. -
Fig. 5b shows different componentsFig. 5a in a top view from below. -
Fig. 6a-c show various embodiments of locking bodies that can be used as an alignment aid and / or as a positioning aid. -
Fig. 7 shows a further embodiment of a positioning aid for a heating element. -
Fig. 8 shows a further embodiment of a positioning aid for a heating element or a Klemmvorrichtungspositionierhilfe. -
Figure 9 shows an alternative fastening device for pressing a heating element to a screed plate.
Die Einbaubohle 4 dient insbesondere zum Glätten des Mischguts. In
Das Heizelement 11 kann durch eine Befestigungsvorrichtung 12 an das Glättblech 9 andrückbar sein. Im vorliegenden Ausführungsbeispiel umfasst die Befestigungsvorrichtung 12 ein Betätigungsglied 13 in Form einer Schraube 13a, ein elastisches Element 14 in Form eines Biegeblechs 14a, eine Ausrichthilfe 15 und eine Klemmvorrichtung 16 in Form eines Klemmbleches 16. Durch Betätigung des Betätigungsglieds 13, im vorliegenden Ausführungsbeispiel durch Einschrauben der Schraube 13a in ein im Rahmen 10 vorgesehenes Gewinde, wird das elastische Element 14, im vorliegenden Ausführungsbeispiel das Biegeblech 14a, ausgelenkt. Durch die Verbindung des elastischen Elements 14, im vorliegenden Ausführungsbeispiel des Biegeblechs 14, mit der Klemmvorrichtung 16, im vorliegenden Ausführungsbeispiel dem Klemmblech 16, kann eine Kraft auf das Heizelement 11 ausgeübt werden, und so das Heizelement 11 gegen das Glättblech 9 vorgespannt werden. Die Befestigungsvorrichtung 12 kann dabei so ausgelegt sein, dass die Klemmvorrichtung 16 mit einer vorbestimmten Kraft auf das Heizelement 11 wirkt. Diese Kraft kann so gewählt sein, dass eine Beschädigung sämtlicher Komponenten der Glätteinheit 8 und dabei insbesondere eine Beschädigung des Heizelements 11, zuverlässig verhindert wird, jedoch eine sichere Klemmung des Heizelements 11 weiterhin gewährleistet ist. Die vorbestimmte Kraft mit der auf das Heizelement 11 eingewirkt werden soll, kann einer vorbestimmten Auslenkung des elastischen Elements 14, im vorliegenden Ausführungsbeispiel des Biegeblechs 14a, zugeordnet sein. Die Befestigungsvorrichtung 12 kann dementsprechend derart ausgelegt sein, dass bei Betätigung des Betätigungsglieds 13, d.h. im vorliegenden Ausführungsbeispiel durch Einschrauben der Schraube 13a, diese vorbestimmte Auslenkung nicht überschritten wird. Im vorliegenden Ausführungsbeispiel kann beispielsweise die Länge der Schraube 13a so gewählt werden, dass ein Schraubenkopf 17 der Schraube 13a genau dann am Rahmen 10 anschlägt, wenn die Schraube 13a das Biegeblech 14 um das vorbestimmte Ausmaß ausgelenkt hat.The
Im in
Der Nocken 13b ist im vorliegenden Ausführungsbeispiel als Körper mit ovalem Querschnitt dargestellt, der um eine Drehachse 20 rotierbar ist. Auch wenn im vorliegenden Ausführungsbeispiel die Berandung des Querschnitts des Nockens 13b einer Ellipse mit einer Haupt- und einer Nebenachse ähnelt, ist oval wie vorstehend verwendet im mathematischen Sinne zu verstehen, d.h. als eine geschlossene zweimal stetig differenzierbare konvexe Kurve in der Ebene. Auch diese breite Beschreibung ist jedoch lediglich als beispielhaft für die Form des Nockens anzusehen. Im vorliegend beschriebenen Beispiel eines ellipsenförmigen Querschnitts des Nockens 13b entspricht die Länge der großen Halbachse der Ellipse dem vorbestimmten Ausmaß, um das die elastischen Elemente 14, 14b, 14c ausgelenkt werden sollen. Dadurch ist die Auslenkung der elastischen Elemente 14, 14b, 14c auf dieses vorbestimmte Ausmaß beschränkt. Im vorliegenden Ausführungsbeispiel verläuft die Drehachse 20, um die der Nocken 13b rotiert wird, senkrecht zur Auslenkungsrichtung der elastischen Elemente 14, 14b, 14c. Es ist jedoch ebenso denkbar, dass die Drehachse 20 parallel zur Auslenkungsrichtung oder in jede beliebige andere Richtung verläuft.The
Die
In den
In den
In
Im folgenden Absatz wird der Fall beschrieben, in dem
Im nun folgenden Absatz soll davon ausgegangen werden, dass die
Die vorbeschriebenen Ausführungsbeispiele stellen verschiedene mögliche Ausführungsformen der Erfindung und von Merkmalen der Erfindung dar. Sie werden in unterschiedlichen Kombinationen beschrieben. Der Fachmann erkennt jedoch, dass die Erfindung nicht auf die in den Ausführungsbeispielen dargestellten Merkmalskombinationen beschränkt ist. Vielmehr können sämtliche beschriebenen Merkmale und Ausführungsbeispiele davon beliebig kombiniert werden. Insbesondere können unterschiedliche Ausführungsformen der gleichen Funktionalität unter den Ausführungsbeispielen beliebig ausgetauscht werden.The above-described embodiments represent various possible embodiments of the invention and features of the invention. They will be described in various combinations. However, those skilled in the art will recognize that the invention is not limited to the feature combinations illustrated in the exemplary embodiments. Rather, all described features and embodiments thereof may be combined as desired. In particular, different embodiments of the same functionality can be freely interchanged among the embodiments.
Claims (16)
Priority Applications (6)
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EP16167878.4A EP3241947A1 (en) | 2016-05-02 | 2016-05-02 | Screed with a fastening device for a heating element |
JP2017085977A JP6458078B2 (en) | 2016-05-02 | 2017-04-25 | Paving screed with fixing device for heating element |
CN201720454694.5U CN207419204U (en) | 2016-05-02 | 2017-04-27 | Pave ironing machine |
CN201710286652.XA CN107338704B (en) | 2016-05-02 | 2017-04-27 | Paving and ironing device with heating element fastening means |
BR102017009184-8A BR102017009184B1 (en) | 2016-05-02 | 2017-05-02 | COMPACTOR TABLE FOR PAVING WITH FIXING DEVICE FOR HEATING ELEMENT, ROAD PAVER AND CONSTRUCTION MACHINE |
US15/584,259 US9885158B2 (en) | 2016-05-02 | 2017-05-02 | Paving screed with fastening device for a heating element |
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EP16167878.4A EP3241947A1 (en) | 2016-05-02 | 2016-05-02 | Screed with a fastening device for a heating element |
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CN114837045A (en) * | 2022-05-23 | 2022-08-02 | 洪文龙 | Town road construction device of levelling that shakes |
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EP3241947A1 (en) * | 2016-05-02 | 2017-11-08 | Joseph Vögele AG | Screed with a fastening device for a heating element |
US10156049B1 (en) * | 2018-08-27 | 2018-12-18 | Stuart Anthony Frost | Modular screed plate assembly and method of assembling a screed plate |
US11028540B2 (en) * | 2018-09-26 | 2021-06-08 | Carlson Paving Products, Inc. | Apparatus and method for a hold-down assembly |
US10662592B1 (en) | 2019-01-31 | 2020-05-26 | Caterpillar Paving Products Inc. | Screed heating element holder |
US11274404B2 (en) * | 2019-03-13 | 2022-03-15 | Caterpillar Paving Products Inc. | Retention apparatus for screed cover |
CN110565484A (en) * | 2019-09-05 | 2019-12-13 | 徐工集团工程机械股份有限公司道路机械分公司 | Screed and paver |
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CN114837045B (en) * | 2022-05-23 | 2023-11-17 | 无锡天工建设有限公司 | Municipal road construction flattening device that shakes |
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Publication number | Publication date |
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BR102017009184B1 (en) | 2022-11-16 |
BR102017009184A2 (en) | 2017-11-07 |
CN107338704A (en) | 2017-11-10 |
JP6458078B2 (en) | 2019-01-23 |
US20170314216A1 (en) | 2017-11-02 |
JP2017223105A (en) | 2017-12-21 |
CN107338704B (en) | 2020-08-07 |
CN207419204U (en) | 2018-05-29 |
US9885158B2 (en) | 2018-02-06 |
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