TWI580841B - Cutter pieces and edge protection of edge protection of road milling machine - Google Patents

Description

Skateboard segment and edge protector for edge protection of road milling machine

The invention relates to a slide segment for an edge guard of a road milling machine or similar road surface processing machine having a plate-like section on which the fastening section can be formed directly or indirectly.

Road milling machines are used in road works or road construction. It serves to completely or preferably partially eradicate the existing lane covering. The milling drum is applied here, which is placed in a protected position inside the milling box. The milling drum is usually equipped with a chisel that is embedded in the ground to be machined in order to remove the lane covering. The protective element is mounted on the side of the milling box that extends in the direction of travel of the road milling machine. This protective element is called an edge protector. The edge guard covers the milling drum from the side and thus blocks the passage towards the milling drum on the one hand during the milling operation. On the other hand, the milled material is prevented from being sprayed into the surrounding environment. The edge of the edge protector is erected on the surface of the lane, so that the complete covering of the milling drum can be achieved. In addition, the slide is pressed against the unprocessed driveway cover which interfaces with the milling drum and is located outside of the work area. Accordingly, the edge guards correspondingly form a seat which prevents bursting of the lane cover that meets from the side during the milling process. The skateboard is assembled from a skateboard segment that can withstand some wear and must be replaced after it has reached its wear limit. For this purpose, the slide segments have fastening sections that are screwed from the side to the edge guard by means of the fastening section. The screw head of the skateboard segment is sometimes subjected to the erosion of the scooping material and then worn away. Then they can no longer be released with the help of a specific tool. In addition, it is possible The joint between the edge protector and the slide segment is washed. Then, the skateboard segments can no longer be accurately and reproducibly positioned.

It is an object of the invention to provide a slide segment for an edge protector which allows for simple maintenance.

Another object of the present invention is to provide an edge protector of the above type which facilitates simple maintenance.

The purpose of the slide segment is achieved in that the fastening section of the slide segment is formed as a plug extension. The slide slide can be inserted into the correspondingly inserted plug receptacle of the edge guard by means of the plug extension, so that it can be easily replaced during rough construction work. The plug extension is arranged in the insertion receiving portion in the region of the wear protection, thus facilitating a reproducible assignment of the slide segment to the edge protector.

In order to ensure a precise assignment of the individual slide segments to each other, it can be provided that at least one stop surface is provided which extends transversely to the central longitudinal axis of the plug extension, which intermediate longitudinal axis The docking direction is set. Thus, the slide segment can be inserted into the edge guard with its plug extension until the stop surface is restricted in the insertion movement.

In particular, it can be provided for the plug extension to have a stop by means of which a plug-in movement can be defined. The stop is thus worn and protected in the region of the plug extension.

The mounting can also be simplified by the fact that the plug-in extension is provided with at least one shaped guide centering element in the region of its free end.

If the insertion side extends on the opposite side, the support side extends transversely to the direction in which the slide segments extend, so that it can be realized on the edge guard in the main force direction during commissioning. Type-locked support.

Particularly preferably, the bearing sides extend parallel to each other here, or They contract in the insertion direction of the plug extension. Furthermore, in the constricted surface area, a tapering geometry of the plug extension is produced which makes the introduction in the plug receptacle easier. According to an alternative inventive variant, it can be provided that the bearing side has a surface area which is formed in a convex or concave manner. This surface area helps to increase the surface area and reduce surface pressure.

It may also occur during commissioning that the road milling machine travels transversely to the main direction of travel. In order to maintain a reliable fastening of the slide segments even in this operating state, it can be provided that the plug extension has a side which extends in the direction of extension of the slide segment on the opposite side. The slide segments can be mounted in a positively locking manner on the respective opposite faces of the edge protection element.

Road milling machines often move against the main direction of travel during commissioning. This results in a different load situation on the slide segment than on the main travel direction. According to a variant of the invention, the plug-in extension has an asymmetrical geometry with respect to the intermediate cross-section, which extends over the central longitudinal axis of the plug-in extension and It extends transversely to the direction in which the slide segments extend.

In accordance with a variant of the invention, provision can be made for at least one elevation which projects in the direction of extension and which protrudes in the direction of extension or in the direction of extension from the insertion extension. This bulge is used to overlap the edge protection areas that exist between the individual slide segments and thus achieve a plate structure that is as seamless as possible.

A compact construction of the slide segment is facilitated by the fact that the projection carrying the plate-like section is connected directly or indirectly to the plug extension.

In particular, it can be provided here that the plate section has a greater width than the projection. With this cross-sectional offset, the entrance into the plug receiving portion can be covered in a labyrinth. Therefore, it is possible to reduce the entry of contaminants into the plug receiving portion.

The skateboard segments can be made to have a higher wear resistance by placing a hard material element, such as a weld overlay component, a hard metal component, a hard material coating or the like, on the plate section.

A particularly preferred variant of the invention is the use of a clip element which has one or more elastic functional components. By means of the clip element, the slide slide can be tensioned in a simple manner with the edge guard, wherein the connection can be easily engaged and released due to the elasticity of the functional component. In this case, the clip element is held in the region of the plug-in extension, so that the clip element can be placed in an anti-wear manner.

A particularly simple assignment of the clamping element to the slide segment can be achieved in the case of a receptacle in the form of a recess or recess. In this case, the elasticity of the clip element can also be used in particular to achieve a tension in the receptacle, so that additional fastening measures can be omitted.

The object of the invention relates to an edge protection element which is used in the case of a road milling machine or a similar road surface machining machine having an edge for receiving a slide segment, ie the edge has a slide for receiving the slide The plug receiving portion of the clip. The slide slide can be introduced into the plug receptacle in a simple, preferably tool-free manner. The plug extension of the slide segment is mounted in the insertion receptacle in an anti-wear manner and can be inserted repeatedly into the plug receptacle. Therefore, the maintenance of the edge protector can be significantly simplified.

It is particularly preferred for the plug-in receiving portion to be formed in the shape of a bag and to be open toward the underside of the edge guard. In the case of a recess which is formed in the form of a comb, the recess is at least partially closed in order to form the receptacle by means of a wall which is parallel to one another, so that the edge protector can be produced in a simple manner.

10‧‧‧Edge protection

10.1‧‧‧Body parts

11‧‧‧ Fixed side

12‧‧‧ edge

13‧‧‧Contact block

14‧‧‧Docking Receiver

15‧‧‧ end side

16‧‧‧ siding

17‧‧‧weld joints

18‧‧‧孔口

19‧‧‧ corresponding contact surfaces on the end side

20‧‧‧ Tools

21‧‧‧Pushing pin

30‧‧‧ Skateboarding

31‧‧‧ highlight

32‧‧‧Uplift

33‧‧‧ stop surface

36‧‧‧ plate section

36.1‧‧‧Abutment

37‧‧‧Hard material components

38‧‧‧Dock extension

38.1‧‧‧Guiding Centerpieces

38.2‧‧‧Support side

38.3‧‧‧ side

38.4‧‧‧End side

39‧‧‧ accommodating department

39.1‧‧‧ bottom

40‧‧‧Card components

41‧‧‧Body parts

42‧‧‧Features

M‧‧‧ intermediate longitudinal axis

L‧‧‧Stretching direction

The invention is explained in detail below on the basis of the embodiments described in the drawings.

Wherein: Figure 1 shows an edge protector for a road milling machine in a perspective view; Figure 2 shows a cross-sectional detail view of Figure 1 taken with II-II; Figure 3 shows Figure 1 A cross-sectional detail view marked with III-III; FIG. 4 shows a first variant of the slide segment in a perspective view; FIG. 5 shows a cross-sectional view of the slide segment according to FIG. 4 along the VV in a cross-sectional view. FIG. 6 shows a second configuration of the slide segment in a perspective view; FIG. 7 shows the slide segment according to FIG. 6 in a side view; FIG. 8 shows a third configuration of the slide slide in a perspective view. And FIG. 9 shows a cross section of the intermediate crossing surface indicated by IX-IX of the slider segment of FIG.

Figure 1 shows an edge protector 10 for a road milling machine having a base part 10.1 in the form of a plate. The base part 10.1 forms a fixed side 11 for coupling to a road milling machine within the scope of the milling box. The edge protector 10 has an edge 12 opposite the fixed side 11 . The edge 12 is provided with grooves which are arranged to be spaced apart from one another by the joints 13, thus creating a comb-like geometry. A wall panel 16 composed of a sheet material is placed in a space formed between the joint blocks 13. In this case, two wall panels 16 are respectively inserted in each recess, which are arranged parallel to one another. In this way, a plug receiving portion 14 is produced between the wall panel 16 and the block 13, as can be seen from Figures 2 and 3. These panels 16 are welded to the edge 12 of the edge protector 10 by a weld joint 17. In this way, a large number of each other are created with a uniform spacing The plug receiving unit 14 is inserted. These plug receptacles 14 are used to accommodate the slider segments 30, as exemplarily shown in detail in Figures 4-9. Here, the slide segments 30 are constructed substantially similar in basic construction. They have a plate-like section 36 which is covered on its underside by a hard material element 37. A coating made of metal powder can be used, for example, as the hard material element 37. It is also conceivable for the hard material element or the armor weld to be applied to the plate section. The protruding portion 31 is formed on the plate portion 36. In this case, the projection 31 has a smaller width transverse to the extension direction L than the plate-like section 36 which extends in the main direction of movement of the road milling machine. In this way, projecting sections are obtained on both sides of the projection 31, which form an abutment surface 36.1. The projection 31 has two ridges 32 which project in the extension direction L on both sides of the insertion extension 38. These ridges 32 form a stop surface 33 which transitions into the side wall 35 via a rounded transition 34.

The plug extension 38 is bounded by two sides 38.3 extending in the direction of extension L. Here, these sides 38.3 are parallel to each other. These sides 38.3 transition into the protruding portion 31 without a shoulder.

As shown in the structural variants of FIGS. 4 and 5, the plug extension 38 has two bearing sides 38.2 which extend perpendicular to the side faces 38.3 and are spaced apart from one another. Each bearing side 38.2 transitions into the end side 38.4 via a guiding centering member 38.1.

The clip element 40 is fixed in the region of the plug extension 38. As shown in Figure 5, the clip element 40 has resilient functional components 42, which are primarily constructed as sheets. It is also conceivable to use a block-shaped clip element made of an elastic material, wherein a part of the clip block or the entire clip block constitutes a functional component having elastic properties. The sheet-like functional parts 42 are arranged in an arrow-like manner and are inclined with respect to the direction of the insertion axis, which defines the intermediate longitudinal axis M of the insertion extension. As shown in Fig. 5, the clip member 40 has a base member 41 on which the functional member 42 is integrally formed. shape A pocket-like receptacle 39 of the form of a recess is formed in the plug extension 38 . The clamping element 40 is inserted with its base part 41 into the receptacle 39 , wherein the clamping element is supported by the base part 41 on the bottom 39.1 of the receptacle. The clip element 40 is designed in such a way that the base part 41 has an elastic characteristic. Therefore, it can be pressed into the accommodating portion 39 with an interference, so that no additional fixing means is required. Alternatively, the clip element 40 can also be glued, for example, in the receptacle 39. As shown in Figure 5, in the installed state, the functional component 42 protrudes slightly from the side 38.3. This protruding dimension is indicated by a in FIG. In order to mount the slide segment 30 shown in FIGS. 4 and 5 in the edge protector 10 according to FIG. 1, the slide segment 30 is first placed with its plug extension 38 on the plug receptacle 14 which is open downwards. Here, the guiding centering member 38.1 penetrates into the adjacent block 13, thus making the mounting easier. Then, the slide segment 30 is inserted into the plug receiving portion 14 with its block extension in the direction of the center longitudinal axis M. This can be achieved first without the effort or with less effort until the functional component 42 engages on the inside of the wall panel 16. When the slide segment 30 is pushed in, the functional component 42 must be elastically deformed. The plug-in movement of the slide segment 30 in the plug-in receptacle 14 is defined by the stop surface 33 of the ridge 32. The stop face bears against the end face 15 of the block 13 . As shown in FIG. 3, in the mounted state, the abutment surface 36. 1 of the plate-like section 36 is spaced apart from the corresponding contact surface 19 of the end side of the wall panel 16 with a small spacing.

The end side 38.4 is also spaced apart from the opposite bottom surface of the plug receiving portion 14. Alternatively, a layout may be selected in which the slide segment 30 is supported on the bottom surface of the plug receiving portion 14 with the end side 38.4. Correspondingly, the stop faces 33 are spaced apart from the end faces of the blocks 13 with a small spacing. In this case, the stop geometry between the slide segment 30 and the plug-in receptacle 14 is protected in the plug-in receptacle 14 . The clip element 40 can also optionally be placed on the base part 10.1, in particular protected in the plug-in receiving part 14.

When put into operation, the slide segment 30 slides with its hard material element 37 on the bottom surface and is continuously worn there. After reaching the wear limit, The slide segment 30 can be simply replaced. For the purpose of disassembly, a window-like opening 18 is provided in the outer side wall panel 16. A tool 20 having an ejector pin 21 can enter the aperture 18. In this case, the push pin 21 can be supported on the abutment surface 36.1 of the plate-like section 36. The urging force can then be applied vertically to the slide segment 30 by means of a hammer. Here, the friction-locking connection between the inner side of the wall panel 16 and the clip element 40 is divided by the removal of the slide segment 30. Subsequently, the slide segment 30 can be completely withdrawn from the plug receiving portion 14 and replaced with a new slide segment 30.

FIG. 6 shows an alternative configuration variant of the slide segment 30. The configuration of the slider segment 30 is substantially equivalent to the slider segment 30 shown in Figures 4 and 5, so that reference may be made to the above embodiments in order to avoid repetition. The difference from the slide segments 30 according to FIGS. 4 and 5 is that the support sides 38.2 are not parallel to each other, but are placed in a V-shape and contract in a direction towards the free end of the plug extension 38. Correspondingly, the webs 13 are formed in such a way that they form a suitable angled stop surface area which diverge in the direction of the bottom side opening in the plug receptacle 14 . Thus, a conical mating face is created between the block 13 and the slide segment 30. This has the advantage that after a slight ejector movement in the direction of the central longitudinal axis M, the bearing side 38.2 has been disengaged from the corresponding opposing surface of the block 13, so that no friction is generated during ejector.

As shown in FIG. 7 , in accordance with the embodiment of FIGS. 4 and 5 , two pocket-shaped receptacles 39 are formed in the plug extension 38 . In this case, the receptacles 39 are offset from each other in the extension direction L and the elastic functional component 42 of the clip element 40 projects from both sides of the plug extension 38 . In this way, a double-sided clip of the plug extension 38 in the plug-in receiving portion 14 is achieved. Of course, this type of clip is possible with all slide segments 30. In contrast to the slide segment 30 according to Figures 4 and 5, the plate-like section 36 and the hard material element 37 are formed to be convex. According to FIG. 1, the slide segment 30 is advantageously arranged, for example, on the edge The front end of the protective part 10 and thus the supporting geometry (Auflaufgeometrie).

8 and 9 illustrate another configuration variant of the slide segment 30. Here, in order to avoid repetition, the same reference numerals should be referred to the above description. Only the differences are explained below. As shown in Figure 8, the plug extension 38 has two opposing support sides 38.2. They first have surface areas that are connected to the stop faces 33 and are angled to each other. These surface areas contract toward the free end of the plug extension 38. After these contracted surface areas, the raised surface area of the support side 38.2 is connected without interruption. The raised areas of the bearing side 38.2 are flushed to each other flush by the likewise raised guiding centering elements. By means of this geometry, the assignment of the insertion extensions 38 to the respective opposite faces of the blocks 13 can be achieved precisely and simply.

As shown in Fig. 9, the clip member 40 has a base member 41 to which a sheet-like elastic functional member 42 is attached from both sides. In order to facilitate the insertion of the plug extension 38 into the plug-in receptacle 14 , the elastic functional component 42 is again embodied in the shape of an arrow and projects slightly from the two sides to the side face 38.3 of the plug-in extension 38 . The receptacle 39 is dug out of the plug extension 38 as a recess. When the plug-in extension 38 is introduced into the plug-in receiving portion 14 of the edge protector 10, the functional component 42 slides on the inside of the two wall panels 16 and is deformed there.

10‧‧‧Edge protection

10.1‧‧‧Body parts

11‧‧‧ Fixed side

12‧‧‧ edge

13‧‧‧Contact block

16‧‧‧ siding

14‧‧‧Docking Receiver

17‧‧‧weld joints

30‧‧‧ Skateboarding

31‧‧‧ highlight

32‧‧‧Uplift

33‧‧‧ stop surface

34‧‧‧round transition

35‧‧‧ side wall

36‧‧‧ plate section

36.1‧‧‧Abutment

37‧‧‧Hard material components

38‧‧‧Dock extension

38.3‧‧‧ side

Claims (17)

A slide segment (30) for an edge protector (10) of a road milling machine having a plate-like section (36) on which a fixed section is formed, directly or indirectly, The fastening section is embodied as a plug extension (38), characterized in that the slide segment (30) uses a clamping element (40) comprising one or more elastic functional components (42), characterized in that the clip element (40) is held in the region of the plug extension (38) and is characterized in that the plug extension (38) has the form of a groove or A receptacle (39) of the recess, in which the clip element (40) is formed. The skateboard segment (30) of claim 1, characterized in that at least one stop surface (33) is provided, which extends transversely to the central longitudinal axis of the plug extension (38), The intermediate longitudinal axis is pre-set in the insertion direction. The slide segment (30) according to the second aspect of the invention is characterized in that the plug extension (38) has a stop by means of which the insertion movement can be defined. A slide segment (30) according to the first aspect of the invention, characterized in that the plug extension (38) is provided with at least one shaped guide centering member (38.1) in the region of its free end. . The slide segment (30) of claim 1, wherein the plug extension (38) has a support side (38.2) on the opposite side, the support side being transverse to the The stretch direction (L) of the slide segment (30) extends. The slide segment (30) of claim 5, wherein the support side (38.2) has a surface area that extends parallel to each other or Shrinking in the insertion direction of the plug extension (38). The slide segment (30) of claim 5, wherein the support side (38.2) has a surface area that is convexly or concavely shaped. The slide segment (30) of claim 1, wherein the plug extension (38) has an extension direction (L) on the opposite side of the slide segment (30). Extended side (38.3). The slide segment (30) of claim 1, wherein the plug extension (38) has an asymmetrical geometry with respect to the intermediate cross section, the intermediate cross section extending through the docking The intermediate longitudinal axis (M) of the extension extends transversely to the direction of extension (L) of the slide segment (30). A skateboard segment (30) according to claim 1, characterized in that at least one ridge (32) protruding in the direction of extension (L) is provided, which is in the direction of extension (L) or against The extension direction (L) protrudes from the insertion extension (38). The slide segment (30) of claim 1, wherein the protruding portion (31) carrying the plate portion (36) is directly or indirectly connected to the plug extension (38). on. The skateboard segment (30) of claim 10, wherein the plate-like section (36) has a larger width than the protruding portion (31). The skateboard segment (30) of claim 1, wherein the plate section (36) has a hard material element (37), such as a weld overlay component, a hard metal component, a hard material layer or Similar objects. An edge protector (10) for a road milling machine having an edge (12) configured to accommodate a slide segment (30) designed according to any one of claims 1 to 13 of the patent application, The feature is that the edge (12) has a plug receiving portion (14) for receiving the slide segment (30). The edge protection element according to claim 14 is characterized in that the plug-in receiving portion (14) is formed in the shape of a bag and is open toward the underside of the edge guard (10). The edge protection element according to claim 14 is characterized in that the edge (12) has recesses in the form of a comb which are arranged in parallel with one another in order to form the receptacles. 16) At least partially closed. An edge protector according to any one of claims 14 to 16, which has the slide segment (30) according to any one of claims 1 to 13.