EP3362603B1 - Skid segment for an edge protection on a road milling machine and edge protection for a road milling machine - Google Patents

Description

The invention relates to a skid segment for edge protection of a road milling machine or the like. Soil cultivation machine according to the preamble of claim 1.

Furthermore, the invention relates to an edge protection for a road milling machine or the like. Tillage machine with at least one such Kufensegment, wherein the edge protection has an edge which is designed to receive the at least one runner segment.

Road milling machines are used in road and road construction. They serve to remove the existing road surface completely or partially. Here, a milling drum is used, which is housed protected within a milling box. The milling drum is usually equipped with chisels, which engage the road surface in the substrate to be processed. At the running in the direction of travel or feed the road milling machine sides of the milling box protective elements are used, which are referred to as edge protection. The edge protection covers the milling drum from the side and thus prevents on the one hand access to the milling drum during the milling operation, on the other hand, ejection of milled material into the environment is prevented. The edge protector stands on the road surface with a lower runner so that complete coverage of the milling drum is achieved. In addition, the skid is hydraulically pressed onto the untreated road surface, which is located after the milling roller outside the work area to ensure a clean cutting edge and to avoid flounder-like outbreaks.

From the US 2009/0185859 A1 is a road milling machine with such edge protection known. A one-piece skid which extends in the feed direction forms the skid, which is detachably and thus exchangeably attached to the edge guard by means of screw connections.

From the DE 10 2012 103 440 A1 is also known a road milling machine with an edge protection and a skid segment for such edge protection. The skid this road milling machine is composed of several segments segments, which are subject to a certain wear and therefore must be replaced after reaching their wear limit. For this purpose, the landing gear segment has a plug-in approach, which can be plugged into a plug-in receptacle of the edge protector, so that it can easily be exchanged in rough construction site operation when the wear limit is reached.

The known runner segments are completely replaced after appropriate wear and then disposed of or recycled or processed. The time in which the known segment segments can be used without interruption, i. the service life of the skid segments is limited by the occurrence of significant signs of wear, which then require complete replacement of the skid segments. The worn skid segments are then usually disposed of or recycled or processed. New skid segments must be replaced after only one lifetime. The use of material to be replaced segment segments is accordingly high over the life of the road milling machine.

Furthermore, from the US 8,584,383 B1 and the CN 104 972 883 A Skid segments with a substantially U-shaped cross-section known.

It is an object of the invention to provide a skid segment for edge protection of a road milling machine or the like tillage machine, which allows a longer useful life compared to the conventional skid segments, thereby reducing the required material usage and maintenance is simplified, and allows a trouble-free and secure mounting of the runner segment.

It is a further object of the invention to provide an edge protector of the aforementioned type which assists in easy and inexpensive maintenance.

The object of the invention is achieved by a skid segment for edge protection according to the features of patent claim 1 and by an edge protector according to the features of patent claim 8. Advantageous developments are each described in the subclaims.

Accordingly, at least one second runner section is attached to the base part of the runner segment, which can be aligned in a second operating position of the base part in the direction of the road or ground surface. Accordingly, in the first operating position, the first runner section comes into direct contact with the road or ground surface and experiences the resulting abrasion during operation of the road milling or soil working machine. When the first runner section has reached its wear limit, the runner segment is brought from the first to the second operating position, in which the second runner section comes into direct contact with the road or ground surface. Only after wear of the second runner section thus the runner segment must be completely replaced. The service life of the runner segment is thus significantly extended and only after twice the life of new material must be used. This also simplifies the maintenance, since a conversion from the first to the second operating position is less complicated than a complete replacement of the runner segment.

On the second side of the base part facing away from the first side, the at least one first runner section is mounted in its lower region. The second side of the base part forms a fastening side with at least one support surface in the first operating position. Thus, the skid segment in the first Operating position with the second side of the base part, for example, at the lower edge of an edge protection for a road milling or tillage machine in a simple way in investment and secure there, the first runner section at the bottom of the second side of the base in the first operating position, the edge protection engages on the underside. Thus, the first runner portion effectively protects the edge guard from underside wear.

The at least one second runner section is mounted in the upper region of the first side, wherein the first and second runner sections together with the base part form a profile with a substantially Z-shaped cross section. In this embodiment, the runner segment can be brought by simply converting or pivoting, for example, about the longitudinal axis or a transverse axis as the pivot axis of the first operating position in the second operating position.

It is also conceivable that attached to the base part a total of three or four runner sections and accordingly three or four different operating positions are possible. With such a skid segment, the useful life would be further extended and the maintenance effort would be further simplified.

In a development according to the invention, in each case at least one stiffening strut can be arranged at an angle between the first runner section and the base part and / or at an angle between the second runner section and the base part. This stiffening struts are also used in the Kufensegment with Z-shaped cross-section of the stiffener and protect, for example, attached to the base screw heads or nuts from abrasion or breakage by protruding over the first and second side of the base.

In order to facilitate sliding on the road or ground surface in a scoop segment having a Z-shaped cross section, the second runner portion may be in the direction of the first at the first end pointing in the advancing direction Blade section bent run and the first runner section at the opposite to the feed direction facing second end in the direction of the second runner section bent. In this case, the base part may preferably be formed following the course of the second and first runner section at the first and second ends.

In a particularly advantageous embodiment, the geometric body of the runner segment can be formed point-symmetrical to the body center. By this shaping, the runner segment can be brought by simple pivoting from the first to a second operating position, wherein in each case the first or second runner portion is part of the slide rail.

In a particularly rigid and easily produced embodiment, the base part may form a profile with a rectangular cross section that extends at least in sections along the edge protector.

For stable and detachable attachment of the runner segment on the edge protection, at least one screw receptacle can be formed in the base part. In this screw mounting screws can be inserted, which in turn are secured to the edge protection.

In order to mount the skid segment with respect to the edge protection at a variable height, the screw receptacle can be designed as a slot extending substantially perpendicularly or transversely to the central longitudinal plane. By simply adjusting the height along the slot, the position of the runner segment can be adjusted to the height of the edge guard above the road or ground surface.

According to yet another preferred embodiment, the base part may have two laterally drawn-in regions, which extend from the first runner section in the direction of the second runner section and from the second runner section in the direction of the first runner section respectively into two inwardly inclined partial areas pass. The two laterally retracted areas are each substantially V-shaped and serve an alternative or additional attachment to the edge protection. For plug-in receptacles are provided on the edge protection, which are in the two different operating positions in each case with the inwardly inclined portions of the laterally retracted areas engaged and form a simple to be solved plug connection for the runner segment.

Between the respective two inwardly inclined partial regions, two essentially parallel partial regions can be formed. These parallel portions are in the assembly or disassembly process with the plug-in receptacles out of engagement and thus facilitate the change or the implementation of the runner segment.

According to the invention, the edge protector has an edge with corresponding fastening receptacles for receiving the at least one runner segment. The fastening receptacles may be arranged substantially along the edge of the edge protector to receive a plurality of Kufensegmenten, which together form a slide rail.

According to an advantageous embodiment, the fastening receptacles for the runner segments may have at least one screw receptacle. In order to form a releasable attachment of the runner segments to the edge protection, fastening screws can be introduced into these screw receptacles, which are introduced into the base parts of the runner segments trained screw receptacles.

In order to provide a flat contact surface between the edge protector and an attached Kufensegment with Z-shaped cross section, the mounting receptacles for the runner segments may have at least one receptacle for the stiffening struts of the runner segments.

In order to provide effective wear protection of the edge of the edge protection, the runner segments with a Z-shaped cross-section can be attached to the edge protection such that in the first operating position of the first runner section the Edge of the edge protection covers the underside and covers the edge of the edge protection on the underside in the second operating position of the second skid section.

In order to provide effective wear protection of the edge of the edge protection, the first runner section may protrude in the direction of the road or ground surface over the edge of the edge protection in U-shaped cross-section in the first operating position. In the second operating position, the second skid portion may protrude toward the road or ground surface beyond the edge of the edge guard.

According to a further embodiment, the fastening receptacles for the runner segments may have at least one plug-in receptacle for the form-fitting retention of at least one runner segment. These plug-in receptacles can in each case be in engagement with the inwardly inclined partial areas of the laterally retracted areas in the two different operating positions of the screed segments and form an easily detachable plug connection.

Advantageously, the plug-in receptacles may have two clamping elements spaced from each other, which are effective on both sides of the inwardly inclined portions of the base part. The clamping elements come in the assembly of the runner segments with the inwardly inclined portions of the laterally retracted areas into engagement, whereby a stable, yet releasable connection is created.

A secure fit of the edge segments on the edge protection can be achieved in that the clamping elements have substantially parallel to the inwardly inclined portions of the base part extending stop surfaces and the base portion of the runner segment at least partially embracing undercuts.

The invention will be explained in more detail with reference to embodiments shown in the drawings.

• Figur 1 in schematischer und perspektivischer Seitenansicht eine Ausführungsform eines Kantenschutzes des Fräskastens einer Straßenfräsmaschine;
• Figur 2 in schematischer und perspektivischer Seitenansicht den in Figur 1 gezeigten Kantenschutz mit vier an seinem unteren Rand in Reihe angeordneten Kufensegmenten, die jedoch nicht Gegenstand der vorliegenden Erfindung sind;
• Figur 3 in schematischer Schnittansicht den Bereich einer Befestigungsaufnahme eines in der Figur 2 gezeigten Kufensegments entlang der Schnittlinie III-III;
• Figur 4 in schematischer und perspektivischer Seitenansicht ein in der Figur 2 gezeigtes Kufensegment mit zueinander parallel verlaufenden Kufenabschnitten;
• Figur 5 in schematischer Vorderansicht entgegen der Vorschubrichtung das in der Figur 4 gezeigte Kufensegment;
• Figur 6 in schematischer und perspektivischer Seitenansicht das in der Figur 2 gezeigte Kufensegment mit einem verjüngten ersten Ende;
• Figur 7 in schematischer Schnittansicht das in der Figur 6 gezeigte Kufensegment entlang der Schnittlinie VII-VII;
• Figur 8 in schematischer und perspektivischer Seitenansicht den in Figur 1 gezeigten Kantenschutz mit vier an seinem unteren Rand in Reihe angeordneten Kufensegmenten gemäß einer bevorzugten Ausführungsform der Erfindung;
• Figur 9 in schematischer Schnittansicht den Bereich einer Befestigungsaufnahme eines in der Figur 8 gezeigten Kufensegments entlang der Schnittlinie IX-IX;
• Figur 10 in schematischer und perspektivischer Seitenansicht ein in der Figur 8 gezeigtes Kufensegment mit zueinander parallel verlaufenden Kufenabschnitten;
• Figur 11 in schematischer Vorderansicht entgegen der Vorschubrichtung das in der Figur 10 gezeigte Kufensegment;
• Figur 12 in schematischer und perspektivischer Seitenansicht das in der Figur 8 gezeigte Kufensegment mit gebogen verlaufenden Kufenabschnitten;
• Figur 13 in schematischer Vorderansicht entgegen der Vorschubrichtung das in der Figur 12 gezeigte Kufensegment;
• Figur 14 in schematischer Seitenansicht den in Figur 1 gezeigten Kantenschutz mit zwei an seinem unteren Rand in Reihe angeordneten Kufensegmenten gemäß einer weiteren bevorzugten Ausführungsform;
• Figur 15 in schematischer Schnittansicht ein in der Figur 14 gezeigtes Kufensegment entlang der Schnittlinie XV-XV;
• Figur 16 in schematischer Schnittansicht ein in der Figur 14 gezeigtes Kufensegment entlang der Schnittlinie XVI-XVI;
• Figur 17 in schematischer und perspektivischer Seitenansicht ein in der Figur 14 gezeigtes Kufensegment;
• Figur 18 in schematischer Vorderansicht entgegen der Vorschubrichtung das in der Figur 17 gezeigte Kufensegment;
• Figur 19 in schematischer und perspektivischer Seitenansicht einen vergrößerten Teilbereich des in der Figur 14 gezeigten Kantenschutzes;
• Figur 20 in schematischer und perspektivischer Seitenansicht den in der Figur 14 gezeigten Kantenschutz mit demontierten Kufensegmenten; und
• Figur 21 in schematischer und perspektivischer Seitenansicht und in vergrößerter Detailansicht DA den in der Figur 20 gezeigten Kantenschutz.

Show it:

• FIG. 1 in a schematic and perspective side view of an embodiment of an edge protector of the milling box of a road milling machine;
• FIG. 2 in a schematic and perspective side view of the FIG. 1 shown edge protection with four arranged at its lower edge in series Kufensegmenten, but which are not the subject of the present invention;
• FIG. 3 in a schematic sectional view of the area of a fastening receptacle in the FIG. 2 shown runner segments along the section line III-III;
• FIG. 4 in a schematic and perspective side view in the FIG. 2 Shown Kufensegment with mutually parallel runner sections;
• FIG. 5 in a schematic front view opposite to the feed direction in the FIG. 4 shown skid segment;
• FIG. 6 in a schematic and perspective side view in the FIG. 2 shown skid segment with a tapered first end;
• FIG. 7 in a schematic sectional view in the FIG. 6 shown segment segment along the section line VII-VII;
• FIG. 8 in a schematic and perspective side view of the FIG. 1 shown edge protection with four arranged at its lower edge in series Kufensegmenten according to a preferred embodiment of the invention;
• FIG. 9 in a schematic sectional view of the area of a fastening receptacle in the FIG. 8 shown runner segments along the section line IX-IX;
• FIG. 10 in a schematic and perspective side view in the FIG. 8 Shown Kufensegment with mutually parallel runner sections;
• FIG. 11 in a schematic front view opposite to the feed direction in the FIG. 10 shown skid segment;
• FIG. 12 in a schematic and perspective side view in the FIG. 8 shown Kufensegment with curved running runner sections;
• FIG. 13 in a schematic front view opposite to the feed direction in the FIG. 12 shown skid segment;
• FIG. 14 in a schematic side view the in FIG. 1 shown edge guard with two arranged at its lower edge in series Kufensegmenten according to another preferred embodiment;
• FIG. 15 in a schematic sectional view in the FIG. 14 shown skid segment along the section line XV-XV;
• FIG. 16 in a schematic sectional view in the FIG. 14 shown skid segment along the section line XVI-XVI;
• FIG. 17 in a schematic and perspective side view in the FIG. 14 shown skid segment;
• FIG. 18 in a schematic front view opposite to the feed direction in the FIG. 17 shown skid segment;
• FIG. 19 in a schematic and perspective side view of an enlarged portion of the in the FIG. 14 shown edge protection;
• FIG. 20 in a schematic and perspective side view in the FIG. 14 shown edge protection with dismantled skid segments; and
• FIG. 21 in a schematic and perspective side view and in an enlarged detail view DA in the FIG. 20 shown edge protection.

FIG. 1 shows a schematic and perspective side view of a plate-like edge protection 5 of an in FIG. 1 only indicated milling box 6 a road milling machine. The edge protection 5 has an inner side 8 for coupling to the road milling machine in the region of the milling box and an outer side 7. In the lower area, the edge protection 5 has an edge 70. The edge protector 5 is elongate in the feed direction V of the road milling machine, wherein the edge 70 extends in the feed direction V and substantially parallel to a road or ground surface (not shown).

FIG. 2 shows in a schematic and perspective side view of the in FIG. 1 shown edge protection 5 with four arranged at its lower edge 70 in series Kufensegmenten 10 and 20, which are not the subject of the present invention. The runner segment 20 arranged at the front end of the edge 70 in the feed direction V has a tapered front end, whereas the three runner segments 10 adjoining the feed direction V are substantially straight. The skid segments 10 and 20 are mounted in a first operating position.

The edge 70 has a plurality of along the edge 70 and from this in the direction B spaced mounting receptacles, of which only a mounting receptacle for receiving one of the runner segments 10 in the FIG. 1 is shown. The fastening receptacle for this blade segment 10 has a screw receptacle 71.

The following is based on the Figures 3 . 4 and 5 the landing gear segment 10 described in more detail.

FIG. 3 shows in a schematic sectional view of the area of the fastening receptacle of the in the FIG. 2 shown runner segment 10 along the section line III-III.

In the FIG. 3 the landing gear segment 10 is shown mounted in a first operating position. The skid segment 10 has a substantially rectangular cross section in the base part 11. On the base part 11, a first skid portion 12 and the upper side, a second runner portion 13 is arranged on the underside, on the in the FIG. 3 left first side 14 protrude from the base part 11 at right angles. The base part 11 is integrally formed with the first and the second skid sections 12 and 13 of a metal, preferably cast steel. The underside of the first runner portion 12 and the top of the second runner portion 13 are substantially planar.

The base part 11 has a second side 16 facing away from the first side 14, which forms a fastening side with at least one support surface independently of the operating position. With the second side 16, the base part 11 rests against the edge 70 of the edge protector 5 and is mounted thereon. In the in FIG. 3 shown first operating position of the first skid portion 12 protrudes in the direction A on the road or ground surface over the edge 70 of the edge protector 5.

In the base part 11, a screw receptacle 19 is formed in the region between the first and the second runner section, which is introduced into the base part 11 as a bore with a drilling direction substantially parallel to the central longitudinal plane MLE. The screw receptacle 19 is formed as an elongated hole, which in turn extends substantially perpendicular to the central longitudinal plane MLE or transversely thereto. At the edge 70 of the edge protector 5 and spaced therefrom in the direction B, a screw receptacle 71 of the edge protector 5 aligned with the screw receptacle 19 of the base part 11 is formed. A Fixing screw 76 is inserted through the two screw holder 71 and 19 from the inside 8 of the edge protector 5 and secured to the first side 14 of the base part with a nut 77. A washer 78 is sandwiched between the base 11 and the nut 77.

The skid segment 10 can also be mounted in a second operating position (not shown). In the second operating position, the skid segment 10 is opposite to that in the FIG. 3 shown first operating position rotated by 180 ° or mounted on envelope. As a result, in the second operating position, the first runner section 12 points upward in the direction B, whereas the second runner section 13 points downward in the direction A. Thus, in the second operating position, the second runner section 13 projects in the direction A onto the road or ground surface beyond the edge 70 of the edge protector 5.

FIG. 4 shows in a schematic and perspective side view in the FIG. 2 shown runner segment 10 with mutually parallel first and second runner sections 12 and 13th

The attached to the first side 14 of the base member 11 at its lower portion 15 first runner portion 12 is in the in FIG. 4 Oriented orientation of the first operating position in the direction A on the road or ground surface aligned. The attached to the first side 14 of the base member 11 at its upper portion 17 second skid portion 13 is in the in FIG. 4 shown orientation of the first operating position in the direction B from the road or ground surface pointing away. In the in FIG. 4 not shown second operating position, the second skid section 13 would be aligned in the direction A on the road or ground surface.

At the skid segment 10 between the first runner portion 12 and the second skid portion 13 two spaced apart in the feed direction V stiffening struts 18 are arranged, which extends senkreicht to the first and second skid sections 12 and 13. The stiffening struts 18 are in the same height H relative to the base part 11 as well as the first and second skid sections 12 and 13 with respect to the base part 11 protrude. The stiffening struts 18 are spaced from the two ends of the runner segment 10 in the feed direction V. At both ends 1 and 2 of the runner segment 10, the first runner portion 12 and the second runner portion 13 are formed chamfered perpendicular to the feed direction V.

On both sides of the stiffening struts 18 a total of four in the feed direction V spaced screw receptacles 19 are formed in the base part 11. The screw receptacles 19 are formed as extending substantially perpendicular to the extending longitudinally longitudinal center plane MLE of the runner segment 10 elongated holes.

FIG. 5 shows in a schematic front view opposite to the feed direction V in the FIG. 4 shown runner segment 10, which is formed symmetrically to the central longitudinal plane MLE. On the first side 14 of the base part 11 of the runner segment 10, the first runner section 12 is mounted in its lower region 15 and the second runner section 13 is mounted in its upper region 17. The first and second runner sections 12 and 13 form, together with the base part 11, a profile with a substantially U-shaped cross section. The base part 11 forms a profile which extends along the edge protector 5 and has a rectangular cross section.

FIG. 6 shows in a schematic and perspective side view that in the FIG. 1 shown skid segment 20 with a tapered first end. 1

The attached to the first side 24 of the base member 21 at its lower portion 25 first runner portion 22 is in the in FIG. 6 Oriented orientation of the first operating position in the direction A on the road or ground surface aligned. The attached to the first side 24 of the base member 21 at its upper portion 27 second skid portion 23 is in the in FIG. 6 shown orientation of the first operating position in the direction B from the road or ground surface pointing away. In the in FIG. 6 not shown second operating position For example, the second skid portion 23 would be oriented toward the road or ground surface in direction A.

The first runner section 22 and the second runner section 23 run bent towards one another at the first end 1 pointing in the feed direction V and together with the base part 21 form a tapered first end 1. The section of the second runner section 23 in the region of the second end 2 extends to the first runner section Section of the first runner portion 22 in the region of the second end 2 in parallel. The shape of the base part 21 follows the converging course of the first and second runner sections 22 and 23.

At the skid segment 20, two stiffening struts 28, which are spaced apart from one another in the feed direction V, are arranged between the first runner section 22 and the second runner section 23 and extend substantially perpendicular to the mutually parallel sections of the first and second runner sections 22 and 23. The stiffening struts 28 protrude at the same height H from the base part 21 as the first and second runner sections 22 and 23 protrude from the base part 21. The arranged in the region of the front tapered first end 1 stiffening strut 28 is spaced from the first end 1 in the feed direction V. The arranged at the rear second end 2 of the runner segment 20 stiffening strut 28 terminates at the end.

On both sides of the front stiffening strut 28 two spaced apart in the feed direction V screw receptacles 29 are formed in the base part 21, and a third screw receptacles 29 is formed near the rear stiffening strut 28. The screw receptacles 29 are introduced as bores with drilling direction substantially parallel to the central longitudinal plane MLE in the base part 21. The screw receptacles 29 are in turn formed as extending substantially perpendicular to the longitudinal longitudinal center longitudinal plane MLE of the skid segment 20 ersteckende slots.

FIG. 7 shows in a schematic sectional view that in the FIG. 6 shown skid segment 20 along the section line VII-VII. The skid segment 20 is formed symmetrically to the central longitudinal plane MLE. On the first side 24 of the base part 21 of the runner segment 20, the first runner section 22 is mounted in its lower region 25 and the second runner section 23 is mounted in its upper region 27. The first and second runner sections 22 and 23 together with the base part 21 form a profile in the section area with a substantially U-shaped cross section. The base part 21 forms a profile which extends along the edge protector 5 and has a rectangular cross section.

FIG. 8 shows in a schematic and perspective side view of the in FIG. 1 shown edge guard 5 with four arranged at its lower edge in series Kufensegmenten 30 and 40 according to a preferred embodiment. The bevel segment 40 arranged at the front end of the edge 70 in the feed direction V has a tapered front end, whereas the three runner segments 30 adjoining the feed direction V are substantially straight. The skid segments 30 and 40 are mounted in a first operating position.

The edge protector 5 has a plurality of along the edge 70 and spaced therefrom in the direction B mounting receptacles, of which only a mounting receptacle for receiving one of the runner segments 30 in the FIG. 8 is shown. The fastening receptacle for this blade segment 30 has a screw receptacle 72. Furthermore, the fastening receptacle receptacles for stiffening struts 38; 38 ', 48 and 48' of the skid segments 30 and 40. The stiffening struts 38; 38 ', 48 and 48' are described below with reference to FIGS Figures 10 and 12 described.

The following is based on the Figures 9 . 10 and 11 the skid segment 30 will be described in more detail.

FIG. 9 shows in a schematic sectional view of the region of the fastening receptacle 72 of the in the FIG. 8 shown runner segment 30 along the section line IX-IX.

In the FIG. 9 the skid segment 30 is shown mounted in a first operating position. The skid segment 30 has a substantially rectangular cross section in the base part 31. On the base part 31, a first runner section 32 is arranged on the underside and a second runner section 33 is arranged on the top side. The first runner section 32 is about in the FIG. 9 Right second side 36 of the base member 31 at right angles to the right. The second runner section 33 is above in the FIG. 9 left first side 34 of the base member 31 at right angles to the left. The base part 31 is integrally formed with the first and the second skid sections 32 and 33 of a metal, preferably cast steel. The underside of the first runner portion 32 and the top of the second runner portion 33 are formed substantially flat.

The base part 31 has a side 34 facing away from the first side 34, which in the in FIG. 9 shown first operating position forms a mounting side with a support surface. With the support surface of the second side 36, the base part 31 rests against the edge 70 of the edge protector 5 and is mounted thereon. In the in FIG. 9 the first runner portion 32 covers the edge 70 of the edge protector 5 on the underside with respect to the road or ground surface (not shown) in the direction A shown.

In the base part 31, a screw receptacle 39 is formed in the region between the first and the second runner section 32 and 33, which is introduced into the base part 31 as a bore with a drilling direction substantially parallel to the central longitudinal plane MLE. The screw receptacle 39 is designed as a slot, which in turn extends substantially perpendicular to the central longitudinal plane MLE or transversely thereto. At the edge 70 of the edge protector 5 and spaced therefrom in the direction B, a screw receptacle 72 of the edge protector 5 aligned with the screw receptacle 39 of the base part 31 is formed. A Fixing screw 76 is inserted through the two screw receivers 72 and 39 from the inside 8 of the edge protector 5 and secured to the first side 34 of the base part 31 with a nut 77. A washer 78 is sandwiched between the base member 31 and the nut 77.

The skid segment 30 can also be mounted in a second operating position (not shown). In the second operating position, the skid segment 30 is opposite to that in the FIG. 9 shown first operating position rotated by 180 ° or mounted on envelope. As a result, in the second operating position, the first runner section 32 points upward in the direction B, whereas the second runner section 33 points downward in the direction A. Thus, in the second operating position, the second runner portion 33 covers the edge 70 of the edge protector 5 on the underside.

The first runner section 32 and the second runner section 33 protrude from the base part 31 in each case at a height H, which in the illustration of FIG. 9 the thickness D of the edge protection 5 corresponds. Alternatively, the height H can also be selected larger or smaller than the thickness D.

FIG. 10 shows in a schematic and perspective side view in the FIG. 8 shown runner segment 30 with mutually parallel first and second runner sections 32 and 33rd

The first runner section 32 attached to the first side 34 of the base part 31 at its lower area 35 is in the in FIG FIG. 10 Oriented orientation of the first operating position in the direction A on the road or ground surface aligned and extends at the second side 36 from the base portion 31 at right angles projecting rearward. The attached to the first side 34 of the base member 31 at its upper portion 37 second runner portion 33 is in the in FIG. 10 shown orientation of the first operating position in the direction B of the road or ground surface pointing away and extends at the first side 34 of the base member 31 at right angles projecting forward. In the in FIG. 10 not shown second operating position, the second runner portion 33 would be aligned in the direction A on the road or ground surface.

On the skid segment 30, two stiffening struts 38 spaced from one another in the feed direction V are arranged on the first side 34 of the base part 31 between the second runner section 33 and the base part 31. The stiffening struts 38 protrude at the same height H from the base part 31 as the second runner portion 33 protrudes from the base part 31. The stiffening struts 38 extend perpendicular to the second runner section 33 over a length L which is shorter than the height h of the first side 34 of the base part 31 perpendicular to the second runner section 33.

At the skid segment 30, between the first runner section 32 and the base part 31, two stiffening struts 38 'spaced apart from one another in the feed direction V are arranged on the second side 36 of the base part 31. In the presentation of the FIG. 10 However, these stiffening struts are not visible because they are hidden by the base part 31. However, one of the stiffening struts 38 'is in the FIG. 11 shown.

The stiffening struts 38 are spaced from the two ends 1 and 2 of the runner segment 30 in the feed direction V or opposite to the feed direction V. At both ends 1 and 2 of the runner segment 30, the first runner portion 32 and the second runner portion 33 are formed chamfered perpendicular to the feed direction V.

On both sides of the stiffening struts 38, a total of four in the feed direction V spaced screw receptacles 39 are formed in the base part 31. The screw receptacles 39 are formed as slots extending substantially perpendicular to the longitudinal center plane MLE of the runner segment 30.

FIG. 11 shows in a schematic front view opposite to the feed direction V in the FIG. 10 shown skid segment 30. The geometric body of the skid segment 30 is point-symmetrical to the body center M is formed. This is also from the FIG. 10 can be seen, in which also the body center M is located.

As the FIG. 11 2, the second runner portion 33 is attached to the first side 34 of the base portion 31 in the upper portion 37 thereof, and the second runner portion 32 is attached to the second side 36 of the base portion 31 at the lower portion 35 thereof. The first and second runner sections 32 and 33 together with the base part 31 form a profile with a substantially Z-shaped cross section. The base part 31 forms a profile which extends along the edge protector 5 and has a rectangular cross section.

FIG. 12 shows in a schematic and perspective side view that in the FIG. 8 shown skid segment 40 with bent first and second runners sections 42 and 43. The attached to the second side 46 of the base 41 at its lower portion 45 first runner portion 42 is in the in FIG. 12 Oriented orientation of the first operating position in the direction A on the road or ground surface aligned. The attached to the first side 44 of the base part 41 at its upper portion 47 second runner portion 43 is in the in FIG. 12 shown orientation of the first operating position in the direction B from the road or ground surface pointing away. In the in FIG. 12 not shown second operating position, the second runner section 43 would be aligned in the direction A on the road or ground surface.

The second runner section 43 extends at the first end 1 pointing in the feed direction V in the direction of the first runner section 42, whereas the first runner section 42 is bent in the direction of the second runner section 43 at the second end 2 pointing counter to the feed direction V. The section of the second runner section 43 in the region of the second end 2 extends parallel to the section of the first runner section 42 in the region of the first end 1. The The shape of the base part 41 follows the curved course of the first and second skid sections 42 and 43.

On the skid segment 40, a stiffening strut 48 spaced from the second end 2 in the feed direction V between the second runner section 43 and the base part 41 is arranged on the first side 44 of the base part 41. The stiffening strut 38 protrudes at the same height H with respect to the base part 41 as the second runner portion 43 protrudes from the base part 41. The stiffening strut 48 extends perpendicular to the second runner portion 43 over a length L which is shorter than the height h of the first side 44 of the base member 31 perpendicular to the straight portion of the runner portion 43.

At the skid segment 40, a stiffening strut 48 'is likewise arranged on the second side 46 of the base part 41 between the first runner section 42 and the base part 41. In the presentation of the FIG. 12 However, this stiffening strut is not visible because it is obscured by the base part 41. However, the stiffening strut 48 'is in the FIG. 13 shown.

The stiffening struts 48 are spaced from the two ends of the runner segment 40 in the feed direction V. At the first end 1 of the runner segment 40, the first runner portion 42 is formed chamfered perpendicular to the feed direction V. At the second end 2 of the runner segment 40, the second runner portion 43 is formed chamfered perpendicular to the feed direction V.

On both sides of the stiffening strut 48 are two in the feed direction V spaced screw receptacles 49 formed on the first side 44 in the base part 41, and a third screw receptacles 49 is formed near the first end 1. The screw receptacles 49 are introduced as bores with drilling direction substantially parallel to the central longitudinal plane MLE in the base part 41. The screw receptacles 49 are formed as elongated holes, which in turn extend substantially perpendicular to the central longitudinal plane MLE or transversely thereto.

FIG. 13 shows in a schematic front view opposite to the feed direction V in the FIG. 12 shown skid segment 40. The geometric body of the skid segment 40 is point-symmetrical to the body center M is formed. This is also from the FIG. 12 can be seen, in which also the body center M is located.

As the FIG. 13 2, the second runner portion 43 is attached to the first side 44 of the base 41 in the upper portion 47 thereof, and the first runner portion 42 is attached to the second side 46 of the base 41 in the lower portion 45 thereof. The mutually parallel sections of the first and second runner sections 42 and 43 form together with the base part 31 a profile with a substantially Z-shaped cross-section. The base part 31 forms in the region of the parallel sections of the first and second runner sections 42 and 43 a profile extending along the edge protector 5 with a rectangular cross section.

FIG. 14 shows a schematic side view of the in FIG. 1 shown edge protection 5 with two arranged at its lower edge 70 in series Kufensegmenten 50 according to another preferred embodiment. The identically designed runner segments 50 are mounted in a first operating position. The edge 70 has socket-forming clamping elements 73a, 73b and 73c for receiving the runner segment 50. The clamping elements 73a, 73b and 73c are described below in particular with reference to FIGS. 20 and 21 described in more detail.

The following is based on the FIGS. 15 to 19 one of the skid segments 50 is described in more detail.

FIG. 15 shows in a schematic sectional view that in the FIG. 14 Skid segment 50 shown on the left along the section line XV-XV. FIG. 16 shows in a schematic sectional view that in the FIG. 14 shown right identical, segment segment 50 along the section line XVI-XVI.

In the FIGS. 15 and 16 the skid segment 50 is shown mounted in a first operating position. The skid segment 50 has a substantially rectangular cross-section base 51. On the base part 51, a first runner section 52 and on the top side a second runner section 53 are arranged on the underside. The first runner section 52 is about in the FIG. 15 Right second side 56 of the base member 51 at right angles to the right. The second runner section 53 is above in the FIG. 15 left first side 54 of the base 51 at right angles to the left. The base part 31 is integrally formed with the first and the second skid sections 52 and 53 of a metal, preferably cast steel. The underside of the first runner portion 52 and the top of the second runner portion 53 are substantially planar.

The base part 51 has a first side 54 facing away from the second side 56, which in the in FIG. 15 shown first operating position forms a mounting side with a support surface. With the support surface of the second side 56, the base part 51 rests against the edge 70 of the edge protector 5 and is mounted thereon. In the in FIG. 15 the first runner portion 52 covers the edge 70 of the edge protector 5 on the underside with respect to the road or ground surface (not shown) in the direction A shown.

The geometric body of the runner segment 50 is formed point-symmetrical to the body center M. This is also from the following Figures 16 . 18 and 19 can be seen, in which also the body center M is located.

As with the synopsis of FIGS. 15 and 16 can be seen, attack on the first side 54 from the left clamping elements 73c and 73a at the bottom of the base member 51 at. The clamping elements 73a and 73c are described below in particular with reference to FIGS. 20 and 21 described in more detail. The clamping elements 73c and 73a put the skid segment 50 in the in FIG. 15 shown first operating position. Between the second side 56 of the base part 51 and the outer side 7 of the edge protector 5 acts attached to the base part Rubber element 67 '. By a contact pressure, which is applied by the clamping elements 73c and 73a on the base member 51 in the direction of the edge protector 5, the rubber element 67 'is compressed and thus supports the fixation of the runner segment 50 in the first operating position.

The skid segment 50 can also be mounted in a second operating position (not shown). In the second operating position, the skid segment 50 is opposite to that in the FIG. 15 shown first operating position rotated by 180 ° or mounted on envelope. As a result, in the second operating position, the first runner section 52 points upward in the direction B, whereas the second runner section 53 points downward in the direction A. Thus, in the second operating position, the second runner section 53 covers the edge 70 of the edge protector 5 on the underside.

The first runner section 52 and the second runner section 53 protrude from the base part 51 in each case at a height H, which in the illustration of FIG. 15 essentially corresponds to the thickness D of the edge protector 5. Alternatively, the height H can also be selected larger or smaller than the thickness D.

FIG. 17 shows in a schematic and perspective side view of the one in the FIG. 14 shown skid segments 50th In the illustration of FIG. 17 the landing gear segment 50 is shown in the orientation of the first operating position.

The base part 51 has two laterally drawn-in areas 60 and 61. The Indian FIG. 17 The laterally drawn-in area 60 illustrated on the left forms an approximately V-shaped recess, which is delimited substantially by two inwardly inclined partial areas 62b and 63b. The Indian FIG. 17 The laterally drawn-in area 61 on the right also forms an approximately V-shaped recess, which is bounded essentially by two inwardly inclined partial areas 62a and 63a. The inwardly inclined portions 62b and 63b and 62a and 63a form the legs of the V-shape.

Between the inwardly inclined portions 62b and 63b extends in the valley of the V-shape extending perpendicularly to the first and second runner portions 52 and 53 portion 65. Between the inwardly inclined portions 62a and 63a extending in the valley of the V-shape also a perpendicular to the first and second runner portions 52 and 53 extending portion 64. The portions 64 and 65 extend while parallel to each other.

In the upper region 57 of the first side 54 of the runner segment 50, two rubber elements 66 and 67 spaced from one another and from the second runner section 53 are arranged. At the in the FIG. 17 invisible second side 56 of the runner segment 50 are arranged two mutually and to the first runner portion 52 spaced rubber elements, of which the rubber element with the reference numeral 67 'in the FIG. 18 is shown.

FIG. 18 shows in a schematic front view opposite to the feed direction in the FIG. 17 On the first side 54 of the base part 51, the second runner portion 53 is mounted in its upper portion 57, and on the second side 56 of the base portion 51, the first runner portion 52 is mounted in its lower portion 55. The first and second runner sections 52 and 53 together with the base part 51 form a profile with a substantially Z-shaped cross section.

FIG. 19 shows a schematic and perspective side view of an enlarged portion of the in the FIG. 14 shown edge protection 5. At the edge 70 of the edge protection clamping elements 73a, 73b and 73c for receiving two skid segments 50 are arranged. By means of the clamping elements 73a, 73b and 73c, the two illustrated runner segments 50 are fixed in the first operating position.

Between the clamping elements 73a and 73b, the lower portion of the runner segment 50 is held in a form-fitting manner. The clamping elements 73 a and 73 b are formed complementary to the inwardly inclined portions 62 b and 62 a of the base part 51. The clamping elements 73b and 73c are also complementary to formed inwardly inclined portions 62 b and 62 a of the base part 51. Two mutually spaced clamping elements 73a and 73b or 73b and 73c respectively act on both sides on the inwardly inclined partial areas 62b and 62a of the base part 51.

The clamping elements 73a and 73c are used in the in FIG. 19 shown embodiment, respectively, on one side for receiving only one runner segment 50, whereas the interposed clamping element 73b serves to receive two runner segment 50.

FIG. 20 shows in a schematic and perspective side view in the FIG. 14 shown edge protection 4 with dismantled skid segments 50th FIG. 21 shows in a schematic and perspective side view and in an enlarged detail view DA in the FIG. 20 shown edge protection 5.

The clamping elements 73a and 73b have substantially parallel to the inwardly inclined portions 62a and 62b of the base member 51 ersteckende stop surfaces 74a and 74b, which are positively mounted in the first operating position state with the inwardly inclined portions 62a and 62b of the base member 51 into engagement , In the second operating position, the stop surfaces 74a and 74b are engaged with the inwardly inclined portions 63a and 32b of the base member 51.

On the clamping elements 73a and 73b, the base part partially encompassing undercuts 75a and 75b are formed. The undercuts 75a and 75b support the base part in the direction of the edge protection 5, whereas the abutment surfaces 74a and 74b align the base part in a stable position in the respective operating position.

Both the undercuts 75a and 75b and the stop surfaces 74a and 74b have parallel portions 79a and 79b to the portions 64 and 65 of the base portion 51.

When mounted in the first operating position, the skid segment 50 is attached to the clamping elements 73a and 73b with a small offset downwards in direction A, so that the parallel sections 79a and 79b pass through the laterally drawn-in regions 60 and 61 of the base part 51. Subsequently, the skid segment 50 is pushed from below so far behind the undercuts 75a and 75b up until the inwardly inclined portions 63a and 32b of the base member 51 abut the stop surfaces 74a and 74b. The arranged in this area rubber elements 67 'come here at the edge protection for pressing system.

Claims (15)

1. A skid segment (30; 40; 50) for an edge guard (5) on a road milling machine or similar ground processing machine having a base part (31; 41; 51) and at least one first skid section (32; 42; 52) mounted thereupon, wherein the first skid section (32; 42; 52), in a first operating position of the base part (31; 41; 51), can be directed in direction (A) onto the surface of the road or ground;
   wherein at least one second skid section (33; 43; 53) is mounted on the base part (31; 41; 51), which, in a second operating position of the base part (31; 41; 51), can be directed in direction (A) onto the surface of the road or ground,
   characterised in that
   the base part (31; 41; 51) comprises a first side (34; 44; 54), in the upper region (37; 47; 57) of which the at least one second skid section (33; 43; 53) is mounted, and
   the base part (31; 41; 51) comprises a second side (36; 46; 56) facing away from the first side (34; 44; 54), in the lower region (15; 25; 35; 45; 55) of which, the at least one first skid section (32; 42; 52) is mounted,
   wherein the second side (36; 46; 56) of the base part (31; 41; 51), in the first operating position, forms an attachment side with at least one support surface, and
   wherein the first and second skid sections (32; 42; 52; 33; 43; 53) together with the base part (31; 41; 51) form a profile with a substantially Z-shaped cross-section.
2. The skid segment (30; 40) according to claim 1,
   characterised in that
   at least one reinforcement strut (38; 38'; 48; 48') is arranged respectively in an angle between the first skid section (32; 42) and the base part (31; 41) and/or in an angle between the second skid section (33; 43) and the base part (31; 41).
3. The skid segment (40) according to claim 1 or 2,
   characterised in that
   the second skid section (43) is curved in the direction of the first skid section (42) at the first end (1) pointing in the direction of travel (V) and the first skid section (42) is curved in the direction of the second skid section (43) at the second end (2) pointing counter to the direction of travel (V), and the base part (41) is preferably formed at the first and second ends (1; 2) following the course of the second and first skid sections (43; 42).
4. The skid segment (30; 40; 50) according to one of claims 1 to 3,
   characterised in that
   the geometric body of the skid segment (30; 40; 50) is formed having point symmetry about the centre point (M) of the body, and/or
   the base part (31; 41; 51) forms a profile, with rectangular cross-section, extending at least in sections along the edge guard (5).
5. The skid segment (30; 40) according to one of claims 1 to 4,
   characterised in that
   at least one screw receptacle (39; 49) is formed in the base part (31; 41), in particular that the screw receptacle (39; 49) is formed as a slot extending substantially perpendicular to the central longitudinal plane (MLE).
6. The skid segment (50) according to one of claims 1 to 4,
   characterised in that
   the base part (51) comprises two laterally retracted regions (60; 61), wherein the retracted regions (60; 61) of the first skid section (52) merge in the direction of the second skid section (53) and of the second skid section (53) merge in the direction of the first skid section (52) respectively in two inwardly inclining subregions (62a, 62b; 63a, 63b).
7. The skid segment (50) according to claim 6,
   characterised in that
   two substantially parallel subregions (64; 65) are formed between the two respectively inwardly inclining subregions (62a, 62b; 63a, 63b).
8. An edge guard (5) for a road milling machine or similar ground processing machine comprising at least one skid segment (30; 40; 50) according to one of claims 1 to 7, wherein the edge guard (5) comprises an edge (70) which is formed for receiving the at least one skid segment (30; 40; 50),
   wherein the edge (70) comprises attachment receptacles for receiving at least one skid segment (30; 40; 50).
9. The edge guard (5) according to claim 8,
   characterised in that
   the attachment receptacles for the skid segments (30; 40) comprise at least one screw receptacle (71; 72).
10. The edge guard (5) according to claim 8 or 9,
    characterised in that
    the attachment receptacles for the skid segments (30; 40) comprise at least one receptacle for the reinforcement struts (38; 38'; 48; 48') of the skid segments (30; 40).
11. The edge guard (5) according to one of the claims 8 to 10,
    characterised in that
    in the first operating position, the first skid section (32; 42; 52) covers the underside of the edge (70) of the edge guard (5) and in the second operating position, the second skid section (33; 43; 53) covers the underside of the edge (70) of the edge guard (5).
12. The edge guard (5) according to one of the claims 8 to 11,
    characterised in that
    in the first operating position, the first skid section (32; 42; 52) projects in the direction (A) onto the surface of the road or ground above the edge (70) of the edge guard (5) and, in the second operating position, the second skid section (33; 43; 53) projects in the direction (A) onto the surface of the road or ground above the edge (70) of the edge guard (5).
13. The edge guard (5) according to claim 8,
    characterised in that
    the attachment receptacles for the skid segments (50) comprise at least one plug-in receptacle (73a; 73b) for form-fitting mounting of at least one skid segment (50).
14. The edge guard (5) according to claim 13,
    characterised in that
    the plug-in receptacle comprises two clamp elements (73a; 73b) spaced from each other, which act on both sides on the inwardly inclining subregions (62a, 62b; 63a, 63b) of the base part (51).
15. The edge guard (5) according to claim 14,
    characterised in that
    the clamp elements (73a; 73b) comprise contact surfaces (74a; 74b) extending substantially parallel to the inwardly inclining subregions (62a, 62b; 63a, 63b) of the base part (51) and the base part (51) comprises at least partially surrounding indentations (75a; 75b).

Images