EP3575491A1 - Channel sheet of a road finishing machine - Google Patents

Abstract

A duct plate (6) of a road paver (1) is detachably attached to it to increase the basic working width on a crossbar or on the chassis of the road paver. The channel plate is arranged variable in distance from a subgrade. In order to prevent mixed material from flowing forward in the direction of travel and at the same time to improve the efficiency of the screw conveyor, in which a geometrically defined screw trough is formed, a channel plate extension is arranged on the channel plate, in particular in the direction of the formation, so as to be adjustable.

Description

The invention relates to a channel plate of a road finisher. Such a paver is used for the installation of bound and unbound mixes for the production of surface fortifications, see in particular roads. There is the possibility that a certain working width of the paver is increased by laterally mounted screw conveyor. The corresponding screw conveyors or worm spacers are mounted with channel plates. Such channel plates are mounted in the direction of travel in front of a corresponding worm shaft on a worm conveyor frame part or directly on the chassis of the paver. They form together with a screed a so-called snail trough. The channel plates require a minimum distance to the ground or plane in order to avoid collisions with this. For larger installation thicknesses, the distance of the channel plates to the planum is increased by a screw or chassis height adjustment.

There is in such known channel plates on the paver the possibility that mix flows from a screw space under the channel plates in the direction of travel of the paver forward. There, this mix can cool and thus worsen a paving result in the corresponding production of surface attachment.

The invention has for its object to prevent such flow of mix in the direction of travel forward and at the same time to improve the efficiency of the screw conveyor by a geometrically defined screw trough is formed.

To solve the problem, a channel plate is proposed with the features of claim 1. This channel plate is characterized in particular by the fact that a channel plate extension is arranged adjustable on the channel plate, in particular in the direction Planum. This prevents mixing material from flowing out of the screw space under the channel plates in the direction of travel to the front. In addition, a geometrically defined screw trough is formed by this channel plate extension between the screw conveyor and the channel plate.

At the same time, the adjustability of the channel plate extension ensures that, during installation, a flow of material in the direction of travel is certainly reduced to the front, but that a required ground clearance for the paver during transport travel is not undershot.

In a first embodiment, the channel plate extension is designed, for example, as a flap extension pivotably mounted on the channel plate. That is, the flap extension is pivotable so that, for example, depending on the distance of the channel plates to planum accordingly a flow out of mix from the screw space is prevented. At the same time the required ground clearance for the paver can be adjusted during transport.

In the simplest case, the flap extension can be mounted pivotably substantially at the lower end of the channel plate. This results in a substantially uniform surface of the channel plate with corresponding flap extension. There is also the possibility that the flap extension is mounted pivotably spaced from the lower end of the channel plate.

In the above-mentioned case, it is furthermore advantageous if a pivot axis connects channel plate and flap extension. This may extend along the lower end of the channel plate.

In order to be able to arrange the flap extension correspondingly in different positions, the flap extension can be connected via an adjustable hinge mechanism, in particular with a rear side of the channel plate.

Such a hinge mechanism can also be operated electrically or hydraulically. In another case, the hinge mechanism comprises a link rod and an articulation flange projecting from the flap extension, to which the link rod is pivotably mounted. By appropriate actuation of the articulated rod can then be arranged on the Anlenkflansch the flap extension in different inclination positions relative to the channel plate.

For a simple arrangement of the articulated rod on the channel plate, the articulated rod can be fixed to a retaining bracket projecting from a rear side of the channel plate in at least one folding and one unfolding position. In the Einklappstellung the flap extension is pivoted back, so that essentially only the channel plate interacts with the screw conveyor. In the unfolded position, the flap extension supplements the channel plate. There are also different intermediate positions between Einklapp- and Ausklappstellung conceivable.

In order to store the articulated rod on the headband in a simple manner, the headband may have two spaced strap parts, between which the articulated rod is arranged. It may also prove to be beneficial if the articulated rod has a number of positioning holes, by means of which different relative positions of the articulated rod and headband are fixed.

For different fixing also spaced from the back of the channel plate, it may also prove advantageous if the headband has at least two substantially mutually perpendicular to the back of the channel plate spaced Fixieröffnungspaare with which the positioning in the different relative positions are aligned and in which engages a fixing. The fixing means serves to secure the various relative positions by engaging in Fixieröffnungspaar and corresponding positioning holes.

In order to be able to pivot the articulated rod in a simple manner together with the hinged flap extension, the articulated rod can have a handle at its upper end. In this context, it may further prove to be advantageous, if necessary, the articulated rod has a lower in the direction Anlenkflansch inclined Anlenkabschnitt and one of this section in the direction of headband substantially vertically extending positioning.

It is also conceivable that the channel plate extension is designed as a sliding extension, with a substantially vertically displaceable sliding plate and a bearing part, wherein the bearing part is fastened to the channel plate. The sliding plate is vertically displaceable relative to Lagerteill and accordingly arranged in different positions analogous to the folding or Ausklappstellungen. In the Ausklappstellung example, the slide plate is lowered down in the direction Planum, while it is displaced vertically in Einklappstellung up to its maximum height position relative to the bearing part.

In order to adjust the sliding plate in a simple manner and, for example, to be able to fasten relative to the bearing part, the bearing part may have a sliding guide for a slide bar connected to the sliding plate and / or guide slots for projecting from the sliding plate Verschiebevorsprünge. By means of the sliding guide, the sliding plate is vertically adjustable via the sliding rod and by means of the guide slots, the sliding plate is guided over the protruding displacement projections relative to the bearing part and possibly fastened there.

In this context, it may further prove to be advantageous if the sliding plate has a Verstellvorsprung with threaded portion in which the sliding rod for height adjustment with a male threaded portion is engaged. That is, by turning the push rod is moved through the threaded engagement, the sliding plate further up or down relative to the bearing part.

In the simple embodiment, the displacement projections may be formed as a sliding bolt and / or have a gland end portion. For example, nuts can be screwed onto this threaded end section in order to fix certain positions of the sliding plate relative to the bearing part.

In order to also store the push bar on the sliding plate, the push bar can be mounted longitudinally displaceable in a bore formed in an upper cover edge of the sliding plate. Through this hole, a vertical guide of the sliding plate is relative to the push bar when it is rotated.

Even with the sliding plate and generally with a channel plate extension, it may prove to be beneficial if this is electrically or hydraulically adjustable, so that a manual adjustment is not necessary. In an electrical or hydraulic adjustment also a remote controlled adjustment can be made. Furthermore, it should be noted that the channel plate extension may have a rubber scraper at its lower end or a lower end portion of the channel plate extension may be formed as such a rubber scraper. This means that this rubber scraper can avoid light collisions with the ground or planum and thus damage to the channel plate and in particular the adjustment of the corresponding flap extension is prevented.

In the following advantageous embodiments of the invention will be explained in more detail with reference to the accompanying figures in the drawing.

Fig. 1

eine perspektivische Vorderansicht eines Straßenfertigers mit seitlichen Schneckenförderern und Kanalblechen gemäß Erfindung;

Fig. 2

eine Ansicht analog zu Figur 1 mit ausgeklappten bzw. ausgeschobenen Klappenextensionen bei jedem Kanalblech;

Fig. 3

eine perspektivische Hinteransicht eines Kanalblechs gemäß einem ersten Ausführungsbeispiel mit Klappenextension in Einklappstellung;

Fig. 4

eine Ansicht analog zu Figur 3 mit Klappenextension in Ausklappstellung;

Fig. 5

ein zweites Ausführungsbeispiel für eine Klappenextension in Form einer Schieberextension, und

Fig. 6

eine Ansicht analog zu Figur 5 mit Schieberextension in Ausklappstellung.

Show it:

Fig. 1

a front perspective view of a paver with lateral screw conveyors and duct plates according to the invention;

Fig. 2

a view analogous to FIG. 1 with unfolded or ejected flap extensions at each channel plate;

Fig. 3

a rear perspective view of a channel plate according to a first embodiment with flap extension in Einklappstellung;

Fig. 4

a view analogous to FIG. 3 with flap extension in unfolded position;

Fig. 5

a second embodiment of a flap extension in the form of a sliding extension, and

Fig. 6

a view analogous to FIG. 5 with sliding extension in unfolded position.

FIG. 1 shows a perspective view obliquely from behind on a paver 1 with two lateral screw conveyors 2 to increase a working base width 3 to respective lateral working widths 4 and 5. Such a paver 1 is substantially known, wherein the lateral screw conveyors 2, a number of channel plates 6 is assigned , These are arranged in the direction of travel in front of the screw conveyors 2 and are mounted on a corresponding traverse 7 or directly on the chassis 8 of the paver 1. The channel plates together with the screw conveyors or a corresponding screed a so-called screw trough. This is intended to prevent mixed material from flowing out of the screw space under the channel plates in the direction of travel to the front, where it cools and worsens a paving result.

Corresponding channel plates 6 require a minimum distance to the ground or plane in order to avoid collisions with this. In addition, with larger installation thicknesses by a corresponding screw or Chassishöhenverstellung the distance of both this and the channel plates 6 are increased to 9 Planum.

In FIG. 1 the corresponding channel plates 6 are arranged adjacent to an upper side of the subgrade 9 and releasably secured to the chassis 8 in the illustrated embodiment.

If the distance to the planum is increased by raising the chassis 8, channel plate extensions 10 can be seen according to the invention FIG. 2 , be pivoted downwards in the direction Planum 9 or moved to prevent according to the increased distance with respect to a flow of mix from the screw space under the channel plates in the direction of travel forward. In FIG. 2 the corresponding channel extensions 10 are extended at lower ends of the channel plates 6 in a corresponding Ausklappstellung 20.

After FIG. 2 are the corresponding Kanalblechextensionen 10 designed as a flap extension 11, which are pivotally mounted at the lower ends 12 of the channel plates 6 by means of a corresponding pivot axis 13. The pivot axis 13 is between the lower end 12 and an upper end of the flap extension 11 after FIG. 2 arranged.

In the Figures 3 and 4 are corresponding flap extensions 11 on the channel plate 6 in their different positions after FIGS. 1 and 2 shown in FIG. 3 in Einklappstellung 19 and in FIG. 4 in Ausklappstellung 20, which also in FIG. 2 is shown.

In FIG. 4 In particular, the pivot axis 13 between the lower end 12 of the channel plate 6 and the flap extension 11 is visible. On a rear side of the flap extension 11 there is arranged an articulation flange 17, which is connected to an inclined articulation section 29, which extends obliquely forwards and downwards in the direction of the articulation flange, of an articulated rod 16. The corresponding articulated rod 16 is pivotally fixed to the Anlenkflansch. At the correspondingly inclined Anlenkabschnitt 29 of the articulated rod 16, a substantially vertical positioning portion 30 connects. This has a number of positioning holes 23, see Figures 3 and 4 which serve to fix the positioning section 30 on a retaining bracket 18, which protrudes from a rear side 15 of the channel plate 6. This retaining bracket 18 has two spaced strap parts 21 and 22, between which the positioning portion 30 is displaceable. Depending on the position of the positioning section 30 relative to the retaining clip 18, a corresponding adjustment of the cap extension 11 takes place between, for example, the folding position 19 FIG. 3 or Ausklappstellung 20 after FIG. 4 , Corresponding intermediate positions are likewise possible, see the corresponding arrangement of the positioning openings 23.

In the Figures 3 and 4 is still to be noted that the bracket parts 21 and 22 have at least two fixing opening pairs 24 and 25 which are perpendicular to the back 15 of the channel plate 6 spaced from each other. In FIG. 3 becomes a first fixing hole pair 24, see also FIG. 4 , used for fixing the positioning section 30 by means of corresponding fixing means 26, while in FIG. 4 another fixing opening pair 25, see also FIG. 3 , serves for this fixation. The corresponding fixing means 26 is for example a plug-in and fastenable in its insertion position bolt.

At an upper end 27 of the articulated rod 16, a handle 28 is fixed by means of the 16 different relative positions between the valve extension 11 and channel plate 6 are adjustable by a user by raising or lowering the articulated rod, see also the number of corresponding positioning holes 23 for such different relative positions ,

In the case of the valve extensions 11, it is also possible that these are at the lower ends, i. have at their free ends a rubber scraper, which can dodge in light collisions with the ground or planum and prevent damage to the hinge mechanism 14.

There is also the possibility that a lower end portion of the flap extension 11 is formed as such a rubber scraper.

In the Figures 5 and 6 is a further embodiment of a channel plate extension 10 in the form of a sliding extension 31 shown. The sliding extension 31 includes, for example, a sliding plate 32 and a bearing part 33. The bearing part 33 can be releasably attached to a rear side of a channel plate 6, so relative to this bearing part 33 and thus the channel plate 6, the sliding plate 32 in the corresponding positions Figures 5 and 6 is displaceable, see Einklappstellung 19 after FIG. 5 and Ausklappstellung 20 after FIG. 6 , In the Einklappstellung 19, the sliding plate 32 is far away from the planum that, for example, does not project down over the channel plate 6, see the corresponding arrangement of the channel plates 6 after FIG. 1 without protruding the channel plate extension 10.

According to shows FIG. 6 an arrangement of the sliding plate 32 according to the representation according to FIG. 2 in that the channel plate extension 10 projecting down over lower ends of the channel plate 6.

The bearing part 33 is substantially box-shaped and in Figures 5 and 6 formed open in the direction of the viewer. In an upper end a passage 34 is formed for the push rod. Approximately in the middle, the bearing part 33 has a longitudinal slot 46, through which an adjusting projection 38 is passed, which protrudes from a rear side of the slide plate 32. The arrangement of the Verstellvorsprungs 38 relative to the longitudinal slot 46 defines the minimum or maximum Ausschubposition of the sliding plate 32 relative to the bearing part 33, wherein the Einklappstellung 19, see FIG. 5 , or the Ausklappstellung 20, see FIG. 6 , correspond. On both sides adjacent to the longitudinal slot 46 guide slots 36 are formed through which sliding projections 37 are guided in the form of sliding bolt 41, which also project from a corresponding rear side of the sliding plate 32. This sliding bolt 41 have screw end 42, with which corresponding nuts are connectable. These can serve in addition to the corresponding fixation of the relative positions between sliding plate 32 and bearing plate 33.

The actual adjustment of the slide plate 32 relative to the bearing part 33 is effected by turning a sliding rod 35. This is an upper cover edge 43 of the bearing part 33 in a bore 44 guided longitudinally displaceable. The push rod 35 extends substantially vertically and is arranged with a lower male threaded portion 40 in a threaded portion 39 which is arranged on the adjusting projection 38 or formed. The threaded portion 39 may be formed, for example, as a rotatably arranged in the adjusting projection 38 nut. By rotating the push rod 35 is carried out according to a displacement of the Threaded portion 39 along the male threaded portion 40 and thus an adjustment of the Verstellvorsprungs 38, which is secured to the slide plate 32.

To facilitate the corresponding rotation of the push rod 35, this has at its upper end a handle 28.

The corresponding bearing part 33 can be detachably fastened, for example, by means of lateral bores 47 on a rear side of a channel plate 6.

Also in the embodiment according to Figures 5 and 6 In addition, a rubber scraper may be arranged at a lower end 45 of the slide plate 32, or a lower end portion of the slide plate may be formed as a rubber scraper.

Finally, it should be noted that the adjustment of the corresponding Kanalblechextensionen except manual can also be done hydraulically or electrically. Corresponding adjusting mechanisms can be designed analogously to those already described, so that, for example, the pivoting of the flap extension 11 or the lifting and lowering of the sliding plate 32 takes place correspondingly hydraulically or electrically. In such a hydraulic or electrical adjustment, this can also be done remotely and wirelessly. A corresponding adjustment is in the EP 17 206 966 for pivotable Materialabweiser described. The material deflector is associated with an actuator unit for movement, in particular for pivoting, wherein the actuator unit comprises an electric, hydraulic, electro-hydraulic or pneumatic actuator.

Claims (16)

Channel plate (6) of a paver (1), which is on the paver to increase the working base width (3) on a crossbar (7) or on the chassis (8) of the paver releasably secured, wherein the channel plate (6) distance variable to a Planum ( 9) is arranged, characterized in that a channel plate extension (10) on the channel plate in particular in the direction Planum (9) is arranged adjustable. A channel plate according to claim 1, characterized in that the channel plate extension (10) as on the channel plate (6) pivotally mounted flap extension (11) is formed. A channel plate according to claim 2, characterized in that the flap extension (11) is mounted pivotably substantially at the lower end (12) of the channel plate (6). A channel plate according to claim 3, characterized in that a pivot axis (13) connecting the channel plate (6) and flap extension (10). Channel plate according to one of the preceding claims, characterized in that the flap extension (11) via an adjustable hinge mechanism (14) with a rear side (15) of the channel plate (6) is connected. A channel plate according to one of the preceding claims, characterized in that the hinge mechanism (14) has a link rod (16) and an articulation flange (17) projecting from the flap extension (11), on which the link rod (16) is pivotably mounted. Channel plate according to one of the preceding claims, characterized in that the articulated rod (16) on one of the rear side (15) of the channel plate (6) projecting headband (18) in at least one Einklapp- and Ausklappstellung (19, 20) is fixed. Duct plate according to one of the preceding claims, characterized in that the retaining clip (18) has two spaced strap parts (21, 22), between which the articulated rod (16) is arranged and / or the articulated rod (16) has a number of positioning openings (23). has, by means of the different relative positions of the joint rod (16) and retaining bracket (18) are fixed. Channel plate according to one of the preceding claims, characterized in that the retaining bracket (18) at least two mutually substantially perpendicular to the back (15) of the channel plate (6) spaced Fixieröffnungspaare (24, 25), with which the positioning holes (23) are aligned in different relative positions and in which a fixing means (26) engages. Channel plate according to one of the preceding claims, characterized in that the articulated rod (16) at its upper end (27) has a handle (28) and / or a lower in the direction Anlenkflansch (17) inclined Anlenkabschnitt (29) and one of this in the direction Holding bracket (18) has a substantially vertically extending positioning section (30). Channel plate according to one of the preceding claims, characterized in that the channel plate extension (10) as a slide extension (31) with a substantially vertically displaceable sliding plate (32) and a bearing part (33) is formed, wherein the bearing part (33) on the channel plate (6 ) is attachable. A channel plate according to one of the preceding claims, characterized in that the bearing part (33) has a sliding guide (34) for a sliding bar (35) and / or guide slots (36) connected to the sliding plate (32) for the sliding projections projecting from the sliding plate (32) (37). Duct plate according to one of the preceding claims, characterized in that the sliding plate (32) has an adjusting projection (38) with threaded portion (39), in which the sliding rod (35) for height adjustment with an externally threaded portion (40) is engaged. Channel plate according to one of the preceding claims, characterized in that the displacement projections (37) are designed as a displacement bolt (41) and / or have a screw end portion (42). Channel plate according to one of the preceding claims, characterized in that the push rod (35) is mounted longitudinally displaceably in a bore (44) formed in an upper cover edge (43) of the sliding plate (32). Duct plate according to one of the preceding claims, characterized in that the channel plate extension (10) is electrically, hydraulically, electro-hydraulically and / or pneumatically adjustable and / or at its lower end (45) has a rubber scraper or a lower end portion of the channel plate extension (10) Rubber scraper is formed.

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