EP2578749B1 - Rotor housing for a milling device for soil treatment, milling device and method for cleaning a rotor housing - Google Patents
Rotor housing for a milling device for soil treatment, milling device and method for cleaning a rotor housing Download PDFInfo
- Publication number
- EP2578749B1 EP2578749B1 EP12005494.5A EP12005494A EP2578749B1 EP 2578749 B1 EP2578749 B1 EP 2578749B1 EP 12005494 A EP12005494 A EP 12005494A EP 2578749 B1 EP2578749 B1 EP 2578749B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- rotor housing
- cleaning strip
- cleaning
- rotor
- milling
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 238000004140 cleaning Methods 0.000 title claims description 200
- 238000003801 milling Methods 0.000 title claims description 74
- 239000002689 soil Substances 0.000 title claims description 24
- 238000000034 method Methods 0.000 title claims description 10
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- 230000005540 biological transmission Effects 0.000 claims description 23
- 239000000463 material Substances 0.000 claims description 22
- 239000003381 stabilizer Substances 0.000 claims description 7
- 229910000639 Spring steel Inorganic materials 0.000 claims description 5
- 238000012545 processing Methods 0.000 claims description 3
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- 238000010304 firing Methods 0.000 description 26
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Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C23/00—Auxiliary devices or arrangements for constructing, repairing, reconditioning, or taking-up road or like surfaces
- E01C23/06—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road
- E01C23/08—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road for roughening or patterning; for removing the surface down to a predetermined depth high spots or material bonded to the surface, e.g. markings; for maintaining earth roads, clay courts or like surfaces by means of surface working tools, e.g. scarifiers, levelling blades
- E01C23/085—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road for roughening or patterning; for removing the surface down to a predetermined depth high spots or material bonded to the surface, e.g. markings; for maintaining earth roads, clay courts or like surfaces by means of surface working tools, e.g. scarifiers, levelling blades using power-driven tools, e.g. vibratory tools
- E01C23/088—Rotary tools, e.g. milling drums
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C21/00—Apparatus or processes for surface soil stabilisation for road building or like purposes, e.g. mixing local aggregate with binder
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C19/00—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
- E01C19/45—Portable apparatus for preparing, or for preparing and applying to the road, compound liquid binders, e.g. emulsified bitumen, fluxed asphalt
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T74/00—Machine element or mechanism
- Y10T74/21—Elements
- Y10T74/219—Guards
- Y10T74/2191—Guards for rotary member
Definitions
- the invention relates to a rotor housing for a milling device for tillage, in particular for a road milling machine, a recycler or a stabilizer.
- the rotor housing has an interior open to the floor for receiving a milling rotor, comprising two side walls, a front wall and a rear wall, the side walls, the front wall and the rear wall bounding the interior of the rotor housing to the outside.
- the invention further relates to a milling device for soil cultivation, in particular road milling machine, recycler or stabilizer, with such a rotor housing, and a method for cleaning a rotor housing of adhering in the interior of the rotor housing soil material.
- Generic milling devices are commonly used in road and road construction.
- road milling machines are used concretely for milling off an existing road surface requiring remediation, recyclers and stabilizers for comminuting and / or mixing the soil material, for example with binding agents.
- Such milling devices can be designed as self-propelled machines or else as trailer elements, for example for attachment to a tractor.
- the working apparatus of such milling devices is a milling rotor, which is usually a hollow cylindrical body, which is equipped on its outside with milling tools, such as chisels. In the working mode, the milling rotor lowered into the ground rotates and mills soil material, for example.
- the milling rotor is usually arranged transversely to the direction of travel of the milling device lying on the milling device and rotated, depending on the operating mode, in or against the working direction.
- To the outside of the milling rotor is usually surrounded by the rotor housing, for example, to mix the milled material with a binder and / or prevent the flying around of milled material and / or to allow a controlled material removal from the milling area.
- the rotor housing is thus a milling rotor upwards, to the sides and in and against the working direction surrounding device.
- the rotor housing is designed to be open towards the bottom, so that the milling rotor can engage with the soil to be processed.
- An example of such a milling device which can also be used in road construction, is by the European patent publication EP 0 348 510 A1 which describes a self-propelled milling device for crushing rocks in the leveling of agricultural land.
- adhesions and / or soil materials which are generally referred to below as adhesions, frequently result in the nozzle of the spray device clogging and reliable fluid and / or bitumen supply being no longer guaranteed. In addition, this can significantly affect the mixing results.
- a plunger assembly in each nozzle is specified.
- this solution achieves sufficient cleaning results only in the case of slight adhesions and is virtually ineffective in the case of extreme contamination.
- this arrangement is relatively complicated and costly to manufacture and maintain, finally, a separate plunger assembly is required for each nozzle, and also directed specifically to the cleaning of the nozzle opening itself.
- the object of the invention is to provide a way as accumulated in the rotor housing attachments can be removed as inexpensively, reliably and in a short time.
- a cleaning device arranged in the interior of the rotor housing is provided with a cleaning strip which is movable at least partially relative to the rotor housing, the rotor housing furthermore having at least one passage opening via which impacts and / or shaking movements from outside the rotor housing onto the cleaning strip can be applied.
- the term "rotor housing” refers to that device by means of which a housing of the milling rotor is provided.
- the side walls are those housing parts of the rotor housing, which are arranged on the end faces of the milling rotor, i. in the axial direction of the axis of rotation of the milling rotor in front of and behind the milling rotor.
- the front wall is the part of the rotor housing, which einhaust the milling rotor in the working direction up to the height of the axis of rotation relative to a vertical plane along the axis of rotation of the milling rotor.
- the rear wall is corresponding to that part of the rotor housing which surrounds the milling rotor counter to the working direction from the axis of rotation of the milling rotor or adjoins the front wall counter to the working direction.
- the presently designated wall elements must be correspondingly not plan formed, but may for example include three-dimensional deformations, such as hood-like bulges, a plurality of angularly juxtaposed wall segments, etc. It is important that the rotor housing in its entirety provides an at least almost complete housing with a recess to the bottom for the milling rotor.
- An essential element of the rotor housing according to the invention is a cleaning device.
- the cleaning device is generally designed in such a way that accumulations (soils and / or soil material) accumulated in the interior of the rotor housing can be removed.
- the central element of the cleaning device according to the invention is a cleaning strip.
- the cleaning strip is arranged in the interior of the rotor housing and at least partially movable relative to the rotor housing. The cleaning strip can thus be moved, for example, at least in a partial area relative to the wall elements of the rotor housing (side walls, front wall and rear wall), which includes, for example, in addition to pivoting in particular also bending movements of the cleaning strip.
- the rotor housing has at least one passage opening, can be applied by the blows and / or Rüttelmosen from outside the rotor housing on the cleaning strip.
- the cleaning strip can thus be excited from outside the rotor housing to the relative movements, for example, bending movements, so that no costly dismantling of the rotor housing and / or removal of the milling rotor for cleaning purposes is more necessary.
- the space requirement of the cleaning device according to the invention is extremely low, in particular with respect to the interior of the rotor housing.
- the cleaning strip is arranged flat against the inner surface of the rotor housing and swings or bends at an impact with shocks and / or Studttelioloen from outside the rotor housing through the at least one passage at least partially into the interior of the rotor housing.
- the cleaning strip thus does not claim a significant proportion of the interior of the rotor housing, so that a transfer of the invention to existing rotor housing is readily possible.
- the cleaning strip is at least partially movable relative to the rotor housing in an impact with a shock or a shaking movement.
- the cleaning strip is therefore connected to the rotor housing in an edge region, in particular a longitudinal edge region of the cleaning strip.
- This ensures, on the one hand, a secure connection of the cleaning strip to the rotor housing and, at the same time, sufficient freedom of movement of the cleaning strip in relation to the rotor housing, in particular in the edge region of the cleaning strip opposite the fastening region.
- the longitudinal edge region of the cleaning strip is the edge region along one of the longitudinal sides of the cleaning side, ie one of the sides of the cleaning strip, which is longer than the two adjoining the longitudinal side sides of the cleaning strip.
- the part of the cleaning strip bordering the longitudinal edge region over the longitudinal side of the cleaning strip in particular of the 25% and 20% of the total width of the cleaning strip.
- sufficient storage stability and on the other hand, the cleaning strip relative to the rotor housing in the longitudinal edge region, which faces away from the connection point to the rotor housing, are sufficiently moved relative to the rotor housing to obtain the desired cleaning effect .
- a punctiform connection along the longitudinal edge region or the use of several adjacent in one direction connection points for example, a nearly complete connection of the longitudinal edge region with the rotor housing is possible.
- a cleaning strip which consists of spring steel, allows reliable cleaning results even over very long periods of time.
- Spring steel also has a particularly high strength and elastic properties in a certain area.
- the arrangement of the cleaning strip within the rotor housing may vary. Depending on the soil material and / or design of the rotor housing, sufficient cleaning results can already be obtained, for example, if the cleaning strip extends over a range of, for example, at least 50%, preferably at least 70%, with respect to the axial width of the rotor housing. However, optimum results are obtained when the cleaning strip extends over almost the entire width of the rotor housing. In this embodiment, it is ensured that the cleaning function achieved with the cleaning strip extends over the entire width of the rotor housing.
- the cleaning strip is formed segmented, comprising in particular at least two along the width of the rotor housing immediately adjacent to each other arranged cleaning strip segments.
- the width of the rotor housing is the extent of the rotor housing in the axial direction of the milling rotor, that is usually in the horizontal direction transversely to the working direction of the milling device.
- Typical rotor housings may have, for example, widths of> 1 m, in particular> 1.5 m to> 2 m.
- several cleaning strip segments which are adjacent to one another in the axial direction or across the width of the rotor housing and, if possible, are simpler in terms of installation and maintenance to obtain uniform cleaning results, in particular directly adjacent to each other are arranged.
- the cleaning strip is preferably arranged in regions of the rotor housing in which frequently adhesions and / or dirt occur. These can be, for example, areas with corner recesses, etc. in the inner wall of the rotor housing. In general, a plurality of regions, which tend to adhere to soil material and / or soiling, can thus often be present in a rotor housing. Therefore, a plurality of cleaning strips are preferably also arranged in a rotor housing, in particular in the regions which tend to adhere to the inner wall of the rotor housing.
- a generic rotor housing often includes a device via the fluid, for example Water or bitumen, in particular foamed bitumen, can be introduced into the interior of the rotor housing from the outside.
- a device via the fluid for example Water or bitumen, in particular foamed bitumen, can be introduced into the interior of the rotor housing from the outside.
- corresponding hose connections are present, which open in the rotor housing or to the interior of the rotor housing in a corresponding nozzle opening or a comparable outlet device, via which the fluid enters the interior of the rotor housing.
- Such fluid outlets are often line-like juxtaposed across the width of the rotor housing, i. arranged distributed in the axial direction of the milling rotor in order to allow the most uniform distribution of the fluid inside the rotor housing. Due to the fluids used, in particular water and / or bitumen, especially foamed bitumen, these areas of the rotor housing are particularly susceptible to buildup, so that especially in this area the advantages of the invention come into play particularly.
- Such Einsprühvoriquesen usually have a plurality of distributed over the width of the rotor housing typically arranged along a line fluid nozzles, wherein a plurality of Einsprühvortechniken can be provided on or in the rotor housing, for example, to be able to simultaneously introduce different fluids in the working space or interior of the rotor housing.
- suitable openings are arranged in the rotor housing, via which fluid can be introduced from the outside into the interior of the rotor housing and / or through which fluid nozzles can be guided to the interior of the rotor housing.
- at least one cleaning strip is arranged in the region of the fluid nozzles.
- each of these areas is provided with a cleaning strip.
- several cleaning strips in the direction of rotation of the milling rotor or in the working direction of the milling device side by side, in particular over the entire width of the rotor housing (in one piece or segmented), may be arranged.
- the cleaning strip is arranged overlapping at least one fluid outlet arranged in the rotor housing and has at least one through-passage, via which the fluid can be introduced from the fluid outlet into the interior of the rotor housing or through which the fluid outlet protrudes.
- fluid outlet thus a passage opening in the rotor housing is designated, through which either fluid is sprayed into the interior of the rotor housing or through which an outlet device for fluid, in particular a fluid nozzle, is guided into the interior of the rotor housing.
- a recess is arranged, which at least partially and in particular completely covers the passage opening in the rotor housing in order not to hinder the fluid entry into the interior of the rotor housing by the cleaning strip.
- the passage opening in the cleaning strip is preferably made congruent in relation to the passage opening in the rotor housing. If the cleaning strip is now set in motion by blows and / or shaking movements, it moves in particular in the immediate vicinity of the fluid outlet and, especially in this area and across the passage opening, removes corresponding adhesions. In this way, the region of the at least one fluid outlet and the environment adjacent to it can be particularly efficiently cleared of adherences by the cleaning strip and / or prevent or dissolve blockages in the passage openings (in the rotor housing and / or in the cleaning strip).
- the cleaning strip is therefore particularly preferably connected to the rotor housing at its side opposite the overlap region with the at least one fluid outlet. In this way, it is ensured that the cleaning strip in the region of the fluid outlet when applying a shock or a shaking movement moves particularly strong and thus triggers a particularly efficient cleaning process.
- the at least one passage opening in the rotor housing dimensioned so large that the blows can be performed directly from outside the rotor housing manually, for example with a hammer on the cleaning bar.
- a plurality of passage openings adjacent to each other in particular distributed over the extension of the cleaning strip in the axial direction, can be arranged in order to apply as possible over the entire width of the cleaning strip punches can.
- the at least one passage opening, via which impacts and / or vibrations can be applied to the cleaning strip can be made as small as possible.
- the use of a transmission device has proved to be a part of the cleaning device, can be transmitted via the outside of the rotor housing applied shocks and / or vibrations to the cleaning strip in the interior of the rotor housing.
- the beating and / or shaking movements are thus no longer applied directly to the cleaning strip, but to the transmission device, which transmits the caused by the shocks and / or Rüttelioloen pulses to the cleaning bar.
- the transmission device is in particular passed through the passage opening.
- the transmission device may be, for example, a bolt connected to the cleaning strip, which protrudes outward beyond the outer surface of the rotor housing. Shocks and / or shaking movements from outside the rotor housing can be applied to the bolts, which are transmitted via the bolt into the interior of the rotor housing on the cleaning strip.
- the transmission device is thus connected to the cleaning strip. It goes without saying that several bolts can be arranged on a cleaning strip.
- the transmission device may comprise, for example, a firing pin displaceably mounted on the rotor housing in a bolt guide.
- the bolt guide is formed in such a way that the firing pin, usually linear, between a starting position and a tee position is movable, in which the firing pin at least partially pushes the cleaning bar in the interior of the rotor housing.
- the firing pin is in other words slidably mounted and can Change the position and in particular the bending position of the cleaning strip.
- the bolt guide may be, for example, a guide element with a captive securing device for the firing pin.
- the firing pin projects with a receiving part over the bolt guide, similar to the protruding bolt before. It is particularly effective when the firing pin is spring-loaded, wherein the spring action pushes the firing pin of the cleaning strip preferably in a starting position away.
- the beats and / or shaking movements can be applied manually, for example with a hammer, a crank mechanism, etc.
- a drive device for automatically performing the cleaning function by means of the cleaning device is present.
- the drive device is thus an element which serves to drive the impact and / or vibration movement on the cleaning strip, directly or indirectly.
- the drive device can be, for example, an electric motor, a hydraulic motor, etc.
- the drive device comprises at least one of the elements camshaft, vibration exciter, in particular eccentric exciter, control unit for regulating the impact intensity and / or beat frequency and / or timing.
- the drive means drives the orbital motion of the camshaft.
- the cams are used to trigger the impact and / or shaking and are, for example, with the cleaning bar directly or part of the transmission device, such as a firing pin, operatively connected.
- the camshaft particularly high impact frequencies can be achieved, so that, for example, even a continuous operation of the cleaning function during operation of the milling rotor is possible.
- a vibration exciter in particular exciter exciter.
- Such exciters are characterized by the presence of an eccentric mass distribution, so that imbalances are obtained during rotational movements, which can be used to trigger blows and / or Studttelioloen on the cleaning bar.
- a control unit for regulating the intensity and / or impact frequency of the drive device may also be included. This embodiment makes it possible to achieve optimum cleaning results, since the impact intensity and / or the beat frequency or shaking intensity and / or shaking frequency specifically to those in the respective Application occurring adhesions can be adjusted.
- the time control is designed in such a way that the cleaning function is automatically resolved via the cleaning bar automatically after the expiry of a certain operating interval and / or a certain working distance.
- the embodiments with drive device are thus characterized by a particularly high ease of use and reliable performance of the cleaning function.
- the cleaning strip is preferably designed as a flat plane element in order to have the smallest possible space in the voltage applied to the inner wall of the rotor housing state, although in principle the use of cleaning strips with three-dimensional deformations, such as bends, is possible.
- the cleaning strip can also be provided as a full-surface element.
- the cleaning strip has passage openings for the fluid and / or nozzle passage. It can also be provided independently of the fluid supply openings in the cleaning strip, for example, to improve the cleaning effects. Also, the use of cuts, for example, to obtain tine-like structures, or other shape variants may be advantageous.
- the invention further relates to a milling device for processing soil material with a rotor housing, as has been described in the preceding paragraphs.
- the basic structure of such milling devices is known.
- the rotor housing according to the invention is also suitable for use in a self-propelled milling device, in particular a road milling machine, a recycler or a stabilizer.
- the invention also extends to a method for cleaning a rotor housing of internally adhering soil material, in particular a rotor housing, as described above.
- Essential for the method according to the invention are the steps "applying a arranged inside a rotor housing cleaning strip with shocks and / or Rüttelmony” and “shaking off adhering to the cleaning strip soil material”. Due to the at least partially relative mobility of the cleaning strip relative to the rotor housing can be adhesions to the cleaning strip and in which the cleaning strip surrounding area of the interior of the rotor housing can be removed, without the complicated removal of the milling rotor and / or a lifting of the rotor housing is required.
- FIG. 1 shows a milling device 1, concretely a so-called stabilizer or, depending on the application, a recycler.
- the milling device comprises a machine frame 2, a pair of front wheels 3 and a pair of rear wheels 4, wherein only the respective wheel located in the working direction A on the left side is visible.
- the machine frame 2 is constructed in two parts with two frame members, which are connected to each other via an articulated joint 5. At the height of the articulated joint 5, a height-adjustable cab 6 is arranged.
- the required drive energy is obtained by means of a drive device 7, which controls both the operation of the milling device 1 as well as the drive of the milling rotor 9 (in FIG. 1 indicated very schematically) provides required drive power.
- the milling device 1 is used for editing Soils or roadways and has for this purpose about a horizontal axis of rotation transverse to the direction of rotation a milling rotor 9.
- the milling rotor 9 is surrounded by a rotor housing 8 (in the present case a rotor hood), which closes the space around the milling rotor upwards and towards the sides. Downwards or towards the bottom 10 to be machined, the rotor housing 8 is open.
- the rotor housing 8 thus encloses a working space by the milling rotor 9 is mounted and rotates in the working mode about its axis of rotation 14.
- the milling rotor 9 is adjustable in height relative to the rotor housing 8 and the machine frame 2 in the direction of arrow c and has an unspecified adjusting or pivoting device.
- FIG. 1 shown position of the milling rotor 9 in contact with the soil to be processed 10.
- the milling rotor 9 can be raised.
- the milling device 1 is moved in the working direction A (forward direction) on the ground 9. Further details of the concrete structure of the bell housing 8 covered by the rotor housing around the milling rotor 9 will become apparent from the other figures.
- FIG. 2 the rotor housing 8 is shown separately in perspective oblique view obliquely from the front.
- Essential elements of the rotor housing 8 are a front wall 11, a rear wall 12 and respectively to the sides of the rotor housing 8, a side wall 13.
- the front wall 11 includes that part of the rotor housing 8, which in the working direction a with respect to a vertical plane along the axis of rotation 14 of the milling rotor (in FIG. 2 not shown) lies in front of this vertical plane (the vertical plane in vertical direction is in FIG. 2 indicated by the arrow b).
- rear wall 12 is correspondingly designated that part of the rotor housing 8, which is located in the working direction a behind this vertical plane.
- the rotor housing 8 comprises a cleaning device 15 with a cleaning strip 16 arranged in the interior IR of the rotor housing 8.
- the cleaning strip 16 (FIG. 2) located flush against the inside of the front wall 11 FIG. 2 shown in dashed lines) is as an item view in FIG. 6 shown.
- the cleaning strip 16 is a flat and flat body having fluid passage openings 17 and mounting openings 18 in its surface.
- the cleaning strip 16 is made of spring steel and thus has elastic properties in a certain area.
- screw-type or rivet connections used for connection to the rotor housing 8.
- the fastening openings arranged juxtaposed in the longitudinal direction d are distributed uniformly in the longitudinal edge region 19 of the cleaning strip 16 in the longitudinal direction d.
- the cleaning strip 16 in the assembled state is firmly connected to the front wall 11 (specifically the segment 11 c) and fixed relative to this.
- the flat against the inner wall of the rotor housing 8 cleaning strip 16 is thus in this area in the interior of the rotor housing 8 through Bending elastically within the elasticity range.
- the longitudinal edge region with the fluid passage openings 17 is thus relatively movable relative to the rotor housing 8.
- the longitudinal side of the cleaning strip 16 is in Fig. 6 indicated L and the width with B.
- the longitudinal side L is characterized in that it is significantly longer than the width B of the cleaning strip 16th
- the cleaning strip 16 in the axial direction of the rotation axis 14 and in the longitudinal direction L is further segmented and includes the two juxtaposed arranged identical segment 16a and 16b (for example, according to Fig. 2 ).
- the two individual segments 16a and 16b (a single segment is in Fig. 6 shown) are arranged adjacent to each other and movable separately.
- FIGS. 2 . 3 . 4 and 5 show various alternatives, such as a bending movement of the cleaning strip 16 by blows and / or croquttelmony for shaking off adhering to the cleaning strip 16 soiling can be brought about, with the examples given in the figures are exemplary only and not exhaustive. It is essential that a movement of the cleaning strip 16 can be triggered by the voltage applied to the inner wall of the rotor housing 8 position in the interior and back from outside the rotor housing 8 and the beating and / or Studttelioloen the cleaning bar 16 from outside the rotor housing 8 the arranged inside the rotor housing 8 cleaning bar can be transferred.
- the cleaning strip 16 is arranged lying flat on the inner wall of the rotor housing, so that the adhesions are in particular also on the outer surface facing the interior of the rotor housing 8 the cleaning strip 16 occur.
- a fluid jet 27 and the circulated in the rotor housing 8 bottom material 28 are indicated.
- the embodiment according to FIG. 2 provides for the application of shocks and / or vibrations from outside of the rotor housing 8 on the cleaning bar 16 through holes 20 in the rotor housing 8, specifically in the wall member 11c of the front wall 11, facing the interior of the rotor housing 8 of the cleaning strip 16 in the region between its two longitudinal edge regions completely covered.
- the passage openings 20 are thus in relation to the cleaning strip 16 mounted on the rotor housing 8 in a region in which the cleaning strip 16 is not fixedly connected to the rotor housing 8.
- the cleaning strip 16 is thus accessible via the passage openings 20 from outside the rotor housing 8, so that, for example, manually impacts directly on the cleaning strip 16, for example with a hammer or a chisel, depending on the size of the passage opening 20, can be exercised.
- the passage openings 20 are formed correspondingly relatively large.
- FIG. 4 is a sectional view through the rotor housing 8 with mounted cleaning strip 16 along the line II FIG. 3 ,
- a transmission device 21 is provided, which allows the transmission of outside of the rotor housing 8 applied shocks and / or Studttelmosen on the arranged in the interior of the rotor housing 8 cleaning strip 16.
- the transmission device is a firing pin 22 which is welded onto the cleaning strip 16 and protrudes outwardly from the interior of the rotor housing 8 through through openings 20 in the rotor housing 8 over the outer surface of the rotor housing 8 (specifically the front wall 11) in the height ⁇ H 1 .
- the height ⁇ H 1 is measured along a vertical rising on the front wall 11.
- the firing pin 22 is then with the height .DELTA.H 1 on the rotor housing 8 before, when the cleaning strip 16 rests flat against the inner wall of the rotor housing 8.
- the firing pin 22 transmits this directly to the cleaning strip 16 so that it bends into the interior of the rotor housing 8 in, as it with the dashed line C in Fig. 4 is further illustrated.
- This line shows the position of the cleaning strip 16, which is transitionally bent into the interior of the milling rotor by impacts and / or vibration.
- FIG. 4 showing a sectional view through the rotor housing 8 along the line II Fig. 3 is further illustrates the effect of the cleaning strip 16 on the fluid inlet 24 into the rotor housing.
- Out FIG. 4 results in the position of a fluid nozzle 23, which protrudes from outside the rotor housing 8 coming into a fluid nozzle opening 24 in the rotor housing 8.
- the fluid nozzle opening 24 in the rotor housing lies substantially congruently above the fluid passage opening 17 in the cleaning strip 16, so that a passage is provided from outside the rotor housing 8 through the front wall 11 of the rotor housing 8 and through the cleaning strip 16 toward the interior of the rotor housing 8.
- FIG. 2 is the cleaning strip 16 in the embodiment of Figures 3 and 4 with a screw connection comprising a screw 25 and a nut 26 arranged inside the rotor housing 8.
- FIG. 5 Finally, another variant relates to how impacts and / or shaking movements can be transmitted from outside the rotor housing 8 to the inner cleaning strip 16.
- Fig. 5 is in its basic construction to the in Fig. 4 ajar with the box II framed area of the rotor housing 8.
- the transmission device 21 off FIG. 5 includes several components. In addition to the directly responsible for the impact and Rüttelschreibung the transmission device 21 components, a camshaft 29 and a merely schematically indicated drive and control unit 30 is also present.
- the transmission device 21 comprises a bolt guide 31, which is arranged on the rotor housing 8 and in concrete terms is a sleeve-like body connected to the front wall 11. In the bolt guide 31, a firing pin 32 is slidably mounted in the longitudinal direction e.
- the firing pin 32 is spring-loaded with a compression spring 33 and is by the compression spring 33 in the in FIG. 5 shown starting position urged. In this position, the firing pin 32 is in the maximum of the cleaning strip 16 away pressed position and can be inserted in the direction of arrow e to the cleaning bar 16 out in the rotor housing 8 to the hub .DELTA.H 2 in the rotor housing. If the firing pin 32 is inserted, it strikes against the cleaning strip 16 in the contact region 34 and bends the cleaning strip 16 in the edge region facing away from the screw connection 25/26 into the interior of the rotor housing 8. If, however, no Druckkraftbeetzschung on the firing pin 32 to the rotor housing 8 out more, the firing pin 32 shoots due to its spring loading in the FIG. 5 shown starting position back. In principle, it is also possible to dispense with a pressure spring action since, as a rule, the elastic properties of the cleaning strip 16 are already sufficient to return the firing pin 32 to its initial position.
- FIG. 5 shown embodiment Another essential aspect of in FIG. 5 shown embodiment is that no manual triggering of the beats and / or croquttelmosen is provided over the firing pin 32, although this is quite possible (the elements 29 and 30 are then no longer required).
- a head element 35 On the side facing away from the rotor housing 8 of the firing pin 32, a head element 35 is provided, which is designed to cooperate with the camshaft 29.
- the unit of head element 35 and firing pin 32 thus forms a total of a plunger element whose longitudinal displacement is triggered in the direction of arrow e by a rotational movement of the camshaft 29 in the direction of rotation f.
- the cam of the camshaft 29 then slides on the head member 35 and pushes the element 32/35 to the rotor housing 8 and the cleaning bar 16 so that it bends into the interior of the rotor housing 8.
- this is connected to the drive and control unit 30, which provides the required drive power for the rotational drive of the camshaft 29.
- the work and control unit 30 is further formed in such a way that it can be varied about the rotational speed and thus the impact frequency or impact strength of the element 32/35 on the cleaning strip 16 and thus their bending frequency. For an automatic execution of the cleaning function is possible.
- the work and control unit 30 may also include a time control, which allows, for example, the automated interval-like operation of the cleaning device 15 in the working mode, so that at regular intervals a liberation of the area of the cleaning strip 16 and in particular also the fluid passage openings 17 and fluid nozzle openings 24 takes place in the rotor housing 8 ,
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Description
Die Erfindung betrifft ein Rotorgehäuse für eine Fräsvorrichtung zur Bodenbearbeitung, insbesondere für eine Straßenfräse, einen Recycler oder einen Stabilisierer. Das Rotorgehäuse weist einen zum Boden hin offenen Innenraum zur Aufnahme eines Fräsrotors auf, umfassend zwei Seitenwände, eine Vorderwand und eine Rückwand, wobei die Seitenwände, die Vorderwand und die Rückwand den Innenraum des Rotorgehäuses nach außen hin begrenzen. Die Erfindung betrifft ferner eine Fräsvorrichtung zur Bodenbearbeitung, insbesondere Straßenfräse, Recycler oder Stabilisierer, mit einem solchen Rotorgehäuse, sowie ein Verfahren zur Reinigung eines Rotorgehäuses von im Inneren des Rotorgehäuses anhaftenden Bodenmaterial.The invention relates to a rotor housing for a milling device for tillage, in particular for a road milling machine, a recycler or a stabilizer. The rotor housing has an interior open to the floor for receiving a milling rotor, comprising two side walls, a front wall and a rear wall, the side walls, the front wall and the rear wall bounding the interior of the rotor housing to the outside. The invention further relates to a milling device for soil cultivation, in particular road milling machine, recycler or stabilizer, with such a rotor housing, and a method for cleaning a rotor housing of adhering in the interior of the rotor housing soil material.
Gattungsgemäße Fräsvorrichtungen finden üblicherweise Einsatz im Straßen- und Wegebau. So werden Straßenfräsen beispielsweise konkret zum Abfräsen einer bestehenden und sanierungsbedürftigen Straßendecke, Recycler und Stabilisierer zum Zerkleinern und/oder Durchmischen des Bodenmaterials, beispielsweise mit Bindemitteln, eingesetzt. Derartige Fräsvorrichtungen können als selbstfahrende Maschinen oder aber auch als Anhängeelemente, beispielsweise zum Anbau an eine Zugmaschine, ausgebildet sein. Das Arbeitsgerät solcher Fräsvorrichtungen ist ein Fräsrotor, bei dem es sich üblicherweise um einen hohlzylindrischen Korpus handelt, der an seiner Außenseite mit Fräswerkzeugen, beispielsweise Meißeln, bestückt ist. Im Arbeitsbetrieb rotiert der in den Boden herabgelassene Fräsrotor und fräst dabei beispielsweise Bodenmaterial auf. Der Fräsrotor ist dazu üblicherweise quer zur Fahrtrichtung der Fräsvorrichtung liegend an der Fräsvorrichtung angeordnet und rotiert, je nach Betriebsart, in oder entgegen der Arbeitsrichtung. Nach außen ist der Fräsrotor in der Regel von dem Rotorgehäuse umgeben, um beispielsweise das aufgefräste Material mit einem Bindemittel durchmischen zu können und/oder das Umherfliegen von aufgefrästen Material zu verhindern und/oder einen kontrollierten Materialabtransport aus dem Fräsbereich zu ermöglichen. Bei dem Rotorgehäuse handelt es sich somit um eine den Fräsrotor nach oben, zu den Seiten und in und entgegen der Arbeitsrichtung umgebende Einrichtung. Das Rotorgehäuse ist zum Boden hin offen ausgebildet, damit der Fräsrotor in Eingriff mit dem zu bearbeitenden Boden gelangen kann. Ein Beispiel für eine solche Fräsvorrichtung, die auch im Straßen- und Wegebau eingesetzt werden kann, ist durch die europäische Patentveröffentlichung
Im Arbeitsbetrieb kommt es häufig zu einer Anhaftung von Bodenmaterial und/oder Verschmutzungen auf der Innenseite der Rotorhaube. Dies tritt insbesondere dann auf, wenn die Rotorhaube zusätzlich eine Sprühvorrichtung aufweist, über die Wasser und/oder Bindemittel, wie beispielsweise Bitumenschaum, in den Innenraum des Rotorgehäuses zum Vermengen mit dem Bodenmaterial eingebracht werden. Dieser nachstehend auch allgemein als Anhaftungen bezeichneten Verschmutzungen und/oder Bodenmaterialien haben insbesondere häufig zur Folge, dass die Düsen der Sprühvorrichtung verstopfen und eine zuverlässige Fluid- und/oder Bitumenzufuhr nicht mehr gewährleistet ist. Darüber hinaus können dadurch die Durchmischungsergebnisse erheblich beeinflusst werden.In working mode, there is often an adhesion of soil material and / or dirt on the inside of the rotor hood. This occurs in particular when the rotor hood additionally has a spraying device, via which water and / or binders, such as bitumen foam, are introduced into the interior of the rotor housing for mixing with the soil material. In particular, these so-called adhesions and / or soil materials, which are generally referred to below as adhesions, frequently result in the nozzle of the spray device clogging and reliable fluid and / or bitumen supply being no longer guaranteed. In addition, this can significantly affect the mixing results.
Bisher war es üblich, die Fräsarbeiten zur Reinigung des Rotorgehäuses zu unterbrechen und beispielsweise den Rotor aus dem Rotorgehäuse zu entfernen oder das beispielsweise als Rotorhaube ausgebildete Rotorgehäuse abzuhängen, um Zutritt zum Innenraum des Rotorgehäuses zu bekommen. Die Verschmutzungen im Rotorraum wurden anschließend mit Hilfe von Meißeln, Presslufthämmern, Spaten, etc. entfernt. Danach wurde der Fräsrotor wieder in das Rotorgehäuse eingebracht bzw. die Rotorhaube angehängt und die Fräsarbeiten konnten fortgesetzt werden. Dieses Reinigungsverfahren ist umständlich und zeitaufwendig und hat ein vergleichweise langen Stillstand der Fräsvorrichtung zur Folge.So far, it has been customary to interrupt the milling for cleaning the rotor housing and, for example, to remove the rotor from the rotor housing or hang, for example, designed as a rotor hood rotor housing to get access to the interior of the rotor housing. The dirt in the rotor chamber was then removed with the help of chisels, jackhammers, spades, etc. Thereafter, the milling rotor was re-introduced into the rotor housing or the rotor hood was attached and the milling work could be continued. This cleaning process is cumbersome and time consuming and has a comparatively long stoppage of the milling device result.
Speziell für Ausführungsformen einer Fräsvorrichtung mit einer Sprühvorrichtung ist es ferner bekannt, zu Reinigungszwecken der Sprühdüsen eine Stößelanordnung in jeder Düse vorzusehen, wie es beispielsweise in der
Die Aufgabe der Erfindung besteht darin, eine Möglichkeit anzugeben, wie im Rotorgehäuse angesammelte Anhaftungen möglichst kostengünstig, zuverlässig und in kurzer Zeit entfernt werden können.The object of the invention is to provide a way as accumulated in the rotor housing attachments can be removed as inexpensively, reliably and in a short time.
Die Lösung der Aufgabe gelingt mit einem Rotorgehäuse, einer Fräsvorrichtung und einem Verfahren zur Reinigung eines Rotorgehäuses gemäß den unabhängigen Ansprüchen. Bevorzugte Weiterbildungen sind in den abhängigen Ansprüchen angegeben.The object is achieved with a rotor housing, a milling device and a method for cleaning a rotor housing according to the independent claims. Preferred developments are specified in the dependent claims.
Der Grundgedanke der Erfindung liegt darin, dass eine im Innenraum des Rotorgehäuses angeordnete Reinigungseinrichtung mit einer zumindest teilweise gegenüber dem Rotorgehäuse bewegbaren Reinigungsleiste vorhanden ist, wobei das Rotorgehäuse ferner wenigstens eine Durchtrittsöffnung aufweist, über die Schläge und/oder Rüttelbewegungen von außerhalb des Rotorgehäuses auf die Reinigungsleiste aufgebracht werden können. Mit Rotorgehäuse ist vorliegend diejenige Einrichtung bezeichnet, durch die eine Umhausung des Fräsrotors bereitgestellt wird. Die Seitenwände sind dabei diejenigen Umhausungsteile des Rotorgehäuses, die an den Stirnseiten des Fräsrotors angeordnet sind, d.h. in Axialrichtung der Rotationsachse des Fräsrotors vor und hinter dem Fräsrotor. Die Vorderwand ist derjenige Teil des Rotorgehäuses, der den Fräsrotor in Arbeitsrichtung bis auf Höhe der Rotationsachse bezogen auf eine Vertikalebene entlang der Rotationsachse des Fräsrotors einhaust. Die Rückwand ist entsprechend derjenige Teil des Rotorgehäuses, der den Fräsrotor entgegen der Arbeitsrichtung ab der Rotationsachse des Fräsrotors umgibt beziehungsweise sich entgegen der Arbeitsrichtung an die Vorderwand anschließt. Die vorliegend bezeichneten Wandelemente müssen entsprechend nicht plan ausgebildet sein, sondern können beispielsweise auch dreidimensionale Verformungen, wie beispielsweise haubenartige Wölbungen, mehrere im Winkel aneinander angesetzte Wandsegmente, etc., umfassen. Wichtig ist, dass das Rotorgehäuse in seiner Gesamtheit eine zumindest nahezu vollständige Umhausung mit Aussparung zum Boden für den Fräsrotor zur Verfügung stellt.The basic idea of the invention is that a cleaning device arranged in the interior of the rotor housing is provided with a cleaning strip which is movable at least partially relative to the rotor housing, the rotor housing furthermore having at least one passage opening via which impacts and / or shaking movements from outside the rotor housing onto the cleaning strip can be applied. In the present case, the term "rotor housing" refers to that device by means of which a housing of the milling rotor is provided. The side walls are those housing parts of the rotor housing, which are arranged on the end faces of the milling rotor, i. in the axial direction of the axis of rotation of the milling rotor in front of and behind the milling rotor. The front wall is the part of the rotor housing, which einhaust the milling rotor in the working direction up to the height of the axis of rotation relative to a vertical plane along the axis of rotation of the milling rotor. The rear wall is corresponding to that part of the rotor housing which surrounds the milling rotor counter to the working direction from the axis of rotation of the milling rotor or adjoins the front wall counter to the working direction. The presently designated wall elements must be correspondingly not plan formed, but may for example include three-dimensional deformations, such as hood-like bulges, a plurality of angularly juxtaposed wall segments, etc. It is important that the rotor housing in its entirety provides an at least almost complete housing with a recess to the bottom for the milling rotor.
Wesentliches Element des erfindungsgemäßen Rotorgehäuses ist eine Reinigungseinrichtung. Die Reinigungseinrichtung is allgemein in der Weise ausgebildet, dass im Innenraum des Rotorgehäuses angesammelte Anhaftungen (Verschmutzungen und/oder Bodenmaterial) entfernt werden können. Zentrales Element der erfindungsgemäßen Reinigungseinrichtung ist eine Reinigungsleiste. Die Reinigungsleiste ist im Innenraum des Rotorgehäuses angeordnet und zumindest teilweise gegenüber dem Rotorgehäuse bewegbar. Die Reinigungsleiste kann somit beispielsweise zumindest in einen Teilbereich relativ zu den Wandelementen des Rotorgehäuses (Seitenwände, Vorderwand und Rückwand) bewegt werden, wobei dies beispielsweise neben einem Schwenken insbesondere auch Biegebewegungen der Reinigungsleiste mit umfasst. Durch diese Relativbeweglichkeit zumindest eines Teilbereichs der Reinigungsleiste gegenüber den Wandelementen des Rotorgehäuses können beispielsweise Schlag- und/oder Schwingungsimpulse auf die Reinigungsleiste ausgeübt werden, was eine Relativbewegung, beispielsweise in der Art einer Vibrationsbewegung, zumindest eines Teiles der Reinigungsleiste gegenüber dem Rotorgehäuse zur Folge hat. Dadurch werden die Anhaftungen, zumindest an der Reinigungsleiste selbst und in den der Reinigungsleiste benachbarten Bereichen des Rotorgehäuses gelockert und fallen schließlich in den Innenraum des Rotorgehäuses ab.An essential element of the rotor housing according to the invention is a cleaning device. The cleaning device is generally designed in such a way that accumulations (soils and / or soil material) accumulated in the interior of the rotor housing can be removed. The central element of the cleaning device according to the invention is a cleaning strip. The cleaning strip is arranged in the interior of the rotor housing and at least partially movable relative to the rotor housing. The cleaning strip can thus be moved, for example, at least in a partial area relative to the wall elements of the rotor housing (side walls, front wall and rear wall), which includes, for example, in addition to pivoting in particular also bending movements of the cleaning strip. By this relative mobility of at least a portion of the cleaning strip with respect to the wall elements of the rotor housing, for example, impact and / or vibration pulses can be exerted on the cleaning strip, which is a relative movement, for example in the manner of a vibratory motion, at least one part the cleaning strip relative to the rotor housing result. As a result, the adhesions, at least on the cleaning strip itself and in the areas adjacent the cleaning strip areas of the rotor housing are loosened and eventually fall off into the interior of the rotor housing.
Wesentlich für die Erfindung ist, dass das Rotorgehäuse wenigstens eine Durchtrittsöffnung aufweist, über die Schläge und/oder Rüttelbewegungen von außerhalb des Rotorgehäuses auf die Reinigungsleiste aufgebracht werden können. Die Reinigungsleiste kann somit von außerhalb des Rotorgehäuses zu den Relativbewegungen, beispielsweise Biegebewegungen, angeregt werden, so dass kein aufwendiger Abbau des Rotorgehäuses und/oder ein Entfernen des Fräsrotors zu Reinigungswecken mehr erforderlich ist. Darüber hinaus ist der Platzbedarf der erfindungsgemäßen Reinigungseinrichtung äußerst gering, insbesondere im Bezug auf den Innenraum des Rotorgehäuses. Bevorzugt ist die Reinigungsleiste an der Innenoberfläche des Rotorgehäuses flächig anliegend angeordnet und schwingt beziehungsweise biegt sich bei einer Beaufschlagung mit Schlägen und/oder Rüttelbewegungen von außerhalb des Rotorgehäuses durch die wenigstens eine Durchtrittsöffnung zumindest teilweise in den Innenraum des Rotorgehäuses ein. Die Reinigungsleiste beansprucht somit keinen nennenswerten Anteil des Innenraums des Rotorgehäuses, so dass eine Übertragung der Erfindung auf bestehende Rotorgehäuse ohne weiteres möglich ist.Essential for the invention is that the rotor housing has at least one passage opening, can be applied by the blows and / or Rüttelbewegungen from outside the rotor housing on the cleaning strip. The cleaning strip can thus be excited from outside the rotor housing to the relative movements, for example, bending movements, so that no costly dismantling of the rotor housing and / or removal of the milling rotor for cleaning purposes is more necessary. In addition, the space requirement of the cleaning device according to the invention is extremely low, in particular with respect to the interior of the rotor housing. Preferably, the cleaning strip is arranged flat against the inner surface of the rotor housing and swings or bends at an impact with shocks and / or Rüttelbewegungen from outside the rotor housing through the at least one passage at least partially into the interior of the rotor housing. The cleaning strip thus does not claim a significant proportion of the interior of the rotor housing, so that a transfer of the invention to existing rotor housing is readily possible.
Grundsätzlich kann zur konkreten Lagerung der Reinigungsleiste am Rotorgehäuse auf ein breites Spektrum verschiedener Alternativen zurückgegriffen werden. Neben Gelenkverbindungen hat sich hierbei allerdings die zumindest teilweise feste Verbindung der Reinigungsleiste mit dem Rotorgehäuse, beispielsweise durch Nietverbindungen, Schweißverbindungen, Klebeverbindungen, etc., als bevorzugt erwiesen. Derartige Verbindungen zwischen Reinigungsleiste und Rotorgehäuse zeichnen sich durch eine hohe Standfestigkeit und vergleichsweise einfache Herstellung aus.Basically, a wide range of different alternatives can be used for the specific storage of the cleaning strip on the rotor housing. In addition to joint connections, however, the at least partially fixed connection of the cleaning strip to the rotor housing, for example by riveted joints, welded joints, adhesive bonds, etc., has proven to be preferred. Such connections between cleaning strip and rotor housing are characterized by a high stability and comparatively simple production.
Für die Funktionsweise der Reinigungsleiste ist es erfindungsgemäß vorgesehen, dass diese zumindest teilweise gegenüber dem Rotorgehäuse bei einer Beaufschlagung mit einem Schlag oder einer Rüttelbewegung bewegbar ist. Bevorzugt ist die Reinigungsleiste daher mit dem Rotorgehäuse in einem Randbereich verbunden, insbesondere einem Längsrandbereich der Reinigungsleiste. Dadurch ist einerseits eine sichere Verbindung der Reinigungsleiste zum Rotorgehäuse gewährleistet und gleichzeitig ein im praktischen Einsatz ausreichender Bewegungsfreiraum der Reinigungsleiste gegenüber dem Rotorgehäuse, insbesondere in dem dem Befestigungsbereich gegenüberliegenden Randbereich der Reinigungsleiste. Der Längsrandbereich der Reinigungsleiste ist dabei der Randbereich entlang einer der Längsseiten der Reinigungsseite, d.h. einer der Seiten der Reinigungsleiste, die länger ist als die beiden sich an die Längsseite anschließenden Seiten der Reinigungsleiste. Zum Längsrandbereich zählt dabei insbesondere der zu 25 %und gang besonders zu 20 % der Gesamtbreite der Reinigungsleiste an den Längsrandbereich angrenzende Teil der Reinigungsleiste über die Längsseite der Reinigungsleiste hinweg. Bei den üblichen Abmessungen der Reinigungsleiste wird durch diese Art der Verbindung einerseits eine ausreichende Lagerstabilität erhalten und andererseits kann die Reinigungsleiste gegenüber dem Rotorgehäuse in dem Längsrandbereich, der der Verbindungsstelle zum Rotorgehäuse abgewandt ist, ausreichend gegenüber dem Rotorgehäuse bewegt werden, um den gewünschten Reinigungseffekt zu erhalten. Neben einer punktuellen Verbindung entlang des Längsrandbereiches oder der Verwendung mehrerer in einer Richtung nebeneinander liegender Verbindungspunkte, ist beispielsweise auch eine nahezu vollständige Verbindung des Längsrandbereiches mit dem Rotorgehäuse möglich.For the operation of the cleaning strip, it is inventively provided that it is at least partially movable relative to the rotor housing in an impact with a shock or a shaking movement. Preferably, the cleaning strip is therefore connected to the rotor housing in an edge region, in particular a longitudinal edge region of the cleaning strip. This ensures, on the one hand, a secure connection of the cleaning strip to the rotor housing and, at the same time, sufficient freedom of movement of the cleaning strip in relation to the rotor housing, in particular in the edge region of the cleaning strip opposite the fastening region. The longitudinal edge region of the cleaning strip is the edge region along one of the longitudinal sides of the cleaning side, ie one of the sides of the cleaning strip, which is longer than the two adjoining the longitudinal side sides of the cleaning strip. To the longitudinal border area counts in particular, the part of the cleaning strip bordering the longitudinal edge region over the longitudinal side of the cleaning strip, in particular of the 25% and 20% of the total width of the cleaning strip. In the usual dimensions of the cleaning strip is obtained by this type of connection on the one hand sufficient storage stability and on the other hand, the cleaning strip relative to the rotor housing in the longitudinal edge region, which faces away from the connection point to the rotor housing, are sufficiently moved relative to the rotor housing to obtain the desired cleaning effect , In addition to a punctiform connection along the longitudinal edge region or the use of several adjacent in one direction connection points, for example, a nearly complete connection of the longitudinal edge region with the rotor housing is possible.
Auch wenn grundsätzlich eine Vielzahl an geeigneten Materialien zur Umsetzung der Reinigungsleiste in Frage kommt, hat sich die Verwendung von Federstahl besonders bewährt. Eine Reinigungsleiste, die aus Federstahl besteht, erlaubt auch über sehr lange Zeiträume zuverlässige Reinigungsergebnisse. Federstahl besitzt darüber hinaus eine besonders hohe Festigkeit und gleichzeitig in einem bestimmten Bereich elastische Eigenschaften.Although in principle a variety of suitable materials for implementing the cleaning strip in question, the use of spring steel has proven particularly useful. A cleaning strip, which consists of spring steel, allows reliable cleaning results even over very long periods of time. Spring steel also has a particularly high strength and elastic properties in a certain area.
Auch die Anordnung der Reinigungsleiste innerhalb des Rotorgehäuses kann variieren. Je nach Bodenmaterial und/oder Ausbildung des Rotorgehäuses können ausreichende Reinigungsergebnisse beispielsweise bereits dann erhalten werden, wenn sich die Reinigungsleiste im Bezug auf die axiale Breite des Rotorgehäuses über einen Bereich von beispielsweise wenigstens 50% bevorzugt wenigstens 70 % erstreckt. Optimale Ergebnisse werden allerdings dann erhalten, wenn sich die Reinigungsleiste über nahezu die gesamte Breite des Rotorgehäuses erstreckt. Bei dieser Ausführungsform ist gewährleistet, dass sich die mit der Reinigungsleiste erreichte Reinigungsfunktion über die gesamte Breite des Rotorgehäuses ausdehnt.The arrangement of the cleaning strip within the rotor housing may vary. Depending on the soil material and / or design of the rotor housing, sufficient cleaning results can already be obtained, for example, if the cleaning strip extends over a range of, for example, at least 50%, preferably at least 70%, with respect to the axial width of the rotor housing. However, optimum results are obtained when the cleaning strip extends over almost the entire width of the rotor housing. In this embodiment, it is ensured that the cleaning function achieved with the cleaning strip extends over the entire width of the rotor housing.
Es hat sich daher als vorteilhaft erwiesen, wenn die Reinigungsleiste segmentiert ausgebildet ist, umfassend insbesondere wenigstens zwei entlang der Breite des Rotorgehäuses unmittelbar nebeneinander angeordneter Reinigungsleistensegmente. Die Breite des Rotorgehäuses ist dabei die Erstreckung des Rotorgehäuses in Axialrichtung des Fräsrotors, also üblicherweise in Horizontalrichtung quer zur Arbeitrichtung der Fräsvorrichtung. Übliche Rotorgehäuse können beispielsweise Breiten von > 1 m, insbesondere > 1,5 m bis zu > 2 m aufweisen. Grundsätzlich ist es zwar möglich, eine einzige durchgehende Reinigungsleiste über die gesamte Breite des Rotorgehäuses vorzusehen. Einfacher in der Montage und Wartung sind allerdings mehrere Reinigungsleistensegmente, die in Axialrichtung beziehungsweise über die Breite des Rotorgehäuses nebeneinander und, um möglichst gleichmäßige Reinigungsergebnisse zu erhalten, insbesondere unmittelbar aneinander angrenzend angeordnet sind.It has therefore proven to be advantageous if the cleaning strip is formed segmented, comprising in particular at least two along the width of the rotor housing immediately adjacent to each other arranged cleaning strip segments. The width of the rotor housing is the extent of the rotor housing in the axial direction of the milling rotor, that is usually in the horizontal direction transversely to the working direction of the milling device. Typical rotor housings may have, for example, widths of> 1 m, in particular> 1.5 m to> 2 m. In principle, it is possible to provide a single continuous cleaning strip over the entire width of the rotor housing. However, several cleaning strip segments, which are adjacent to one another in the axial direction or across the width of the rotor housing and, if possible, are simpler in terms of installation and maintenance to obtain uniform cleaning results, in particular directly adjacent to each other are arranged.
Die Reinigungsleiste wird bevorzugt in Bereichen des Rotorgehäuses angeordnet, in denen häufig Anhaftungen und/oder Verschmutzungen auftreten. Dies können beispielsweise Bereiche mit Eckaussparungen, etc. in der Innenwandung des Rotorgehäuses sein. Allgemein können in einem Rotorgehäuse somit häufig mehrere Bereiche vorhanden sein, die zur Anhaftung von Bodenmaterial und/oder Verschmutzungen neigen. Bevorzugt sind daher auch mehrere Reinigungsleisten in einem Rotorgehäuse angeordnet, speziell in den zu Anhaftungen an der Innenwandung des Rotorgehäuses neigenden Bereichen.The cleaning strip is preferably arranged in regions of the rotor housing in which frequently adhesions and / or dirt occur. These can be, for example, areas with corner recesses, etc. in the inner wall of the rotor housing. In general, a plurality of regions, which tend to adhere to soil material and / or soiling, can thus often be present in a rotor housing. Therefore, a plurality of cleaning strips are preferably also arranged in a rotor housing, in particular in the regions which tend to adhere to the inner wall of the rotor housing.
Besonders häufig treten Verschmutzungen und/oder Anhaftungen an der Innenwand des Rotorgehäuses in Austrittsbereichen von Fluid in den Innenraum des Rotorgehäuses auf, konkret beispielsweise an Fluiddüsen und/oder Einlassvorrichtungen für Schaumbitumen, etc. Ein gattungsgemäßes Rotorgehäuse umfasst häufig eine Einrichtung, über die Fluid, beispielsweise Wasser oder Bitumen, insbesondere Schaumbitumen, in den Innenraum des Rotorgehäuses von außen eingebracht werden kann. Dazu sind beispielsweise entsprechende Schlauchverbindungen vorhanden, die im Rotorgehäuse oder zum Inneren des Rotorgehäuses in einer entsprechenden Düsenöffnung oder einer vergleichbaren Auslasseinrichtung münden, über die das Fluid in den Innenraum des Rotorgehäuses eintritt. Derartige Fluidauslasse sind häufig zeilenartig nebeneinander über die Breite des Rotorgehäuses d.h. in Axialrichtung des Fräsrotors verteilt angeordnet, um eine möglichst gleichmäßige Verteilung des Fluids im Inneren des Rotorgehäuses zu ermöglichen. Aufgrund der verwendeten Fluide, insbesondere Wasser und/oder Bitumen, besonders Schaumbitumen, sind diese Bereiche des Rotorgehäuses besonders anfällig für Anhaftungen, so dass speziell in diesem Bereich die Vorteile der Erfindung besonders zum Tragen kommen. Derartige Einsprühvorrichtungen weisen üblicherweise mehrere über die Breite des Rotorgehäuses verteilt typischerweise entlang einer Linie angeordnete Fluiddüsen auf, wobei auch mehrere Einsprühvorrichtungen am oder im Rotorgehäuse vorgesehen sein können, um beispielsweise gleichzeitig verschiedene Fluide in den Arbeitsraum beziehungsweise Innenraum des Rotorgehäuses einbringen zu können. Dazu sind beispielsweise geeignete Öffnungen im Rotorgehäuse angeordnet, über die Fluid von außen in den Innenraum des Rotorgehäuses eingebracht werden kann und/oder durch die hindurch Fluiddüsen zum Innenraum des Rotorgehäuses geführt werden können.Particularly often occur contamination and / or buildup on the inner wall of the rotor housing in discharge areas of fluid in the interior of the rotor housing, specifically, for example, fluid nozzles and / or inlet devices for foamed bitumen, etc. A generic rotor housing often includes a device via the fluid, for example Water or bitumen, in particular foamed bitumen, can be introduced into the interior of the rotor housing from the outside. For this purpose, for example, corresponding hose connections are present, which open in the rotor housing or to the interior of the rotor housing in a corresponding nozzle opening or a comparable outlet device, via which the fluid enters the interior of the rotor housing. Such fluid outlets are often line-like juxtaposed across the width of the rotor housing, i. arranged distributed in the axial direction of the milling rotor in order to allow the most uniform distribution of the fluid inside the rotor housing. Due to the fluids used, in particular water and / or bitumen, especially foamed bitumen, these areas of the rotor housing are particularly susceptible to buildup, so that especially in this area the advantages of the invention come into play particularly. Such Einsprühvorrichtungen usually have a plurality of distributed over the width of the rotor housing typically arranged along a line fluid nozzles, wherein a plurality of Einsprühvorrichtungen can be provided on or in the rotor housing, for example, to be able to simultaneously introduce different fluids in the working space or interior of the rotor housing. For this purpose, for example, suitable openings are arranged in the rotor housing, via which fluid can be introduced from the outside into the interior of the rotor housing and / or through which fluid nozzles can be guided to the interior of the rotor housing.
Der Bereich der Innenwandung des Gehäuses, in dem das Fluid über Fluiddüsen in den Innenraum des Rotorgehäuses eingesprüht wird, beziehungsweise in den das Fluid aus den Fluiddüsen austritt, neigt somit besonders stark zur Ansammlung von Anhaftungen. Gleichzeitig ist es unerwünscht, dass die Fluiddüsen mit Bodenmaterial verstopfen, um über den gesamten Arbeitsprozess hinweg einen gleichmäßigen Fluideintrag zu gewährleisten. Ganz besonders bevorzugt ist daher wenigstens eine Reinigungsleiste im Bereich der Fluiddüsen angeordnet. Für den Fall, dass mehrere Bereiche in dem Rotorgehäuse vorhanden sind, in denen Fluid in das Innere des Rotorgehäuses eingespeist wird, ist bevorzugt jeder dieser Bereiche mit einer Reinigungsleiste versehen. Insbesondere können auch mehrere Reinigungsleisten in Rotationsrichtung des Fräsrotors bzw. in Arbeitsrichtung der Fräsvorrichtung nebeneinander, insbesondere jeweils über die gesamte Breite des Rotorgehäuses (einstückig oder segmentiert), angeordnet sein.The region of the inner wall of the housing, in which the fluid is sprayed via fluid nozzles in the interior of the rotor housing, or in the fluid from the fluid nozzles leakage, thus tends particularly strong to the accumulation of attachments. At the same time, it is undesirable for the fluid nozzles to become clogged with soil material to ensure uniform fluid input throughout the working process. Very particularly preferably, therefore, at least one cleaning strip is arranged in the region of the fluid nozzles. In the event that several areas are present in the rotor housing, in which fluid is fed into the interior of the rotor housing, preferably each of these areas is provided with a cleaning strip. In particular, several cleaning strips in the direction of rotation of the milling rotor or in the working direction of the milling device side by side, in particular over the entire width of the rotor housing (in one piece or segmented), may be arranged.
Bevorzugt ist es ferner vorgesehen, wenn die Reinigungsleiste wenigstens ein im Rotorgehäuse angeordneten Fluidauslass überlappend angeordnet ist und wenigstens eine Durchtrittsausnehmung aufweist, über die das Fluid vom Fluidauslass in den Innenraum des Rotorgehäuses einbringbar ist oder durch die der Fluidauslass hindurchragt. Mit Fluidauslass ist somit eine Durchtrittsöffnung im Rotorgehäuse bezeichnet, durch die hindurch entweder Fluid in den Innenraum des Rotorgehäuses eingesprüht wird oder durch die eine Austrittseinrichtung für Fluid, insbesondere eine Fluiddüse, in den Innenraum des Rotorgehäuses geführt ist. Gleichzeitig ist nicht nur im Rotorgehäuse, sondern auch in der Reinigungsleiste eine Ausnehmung angeordnet, die die Durchtrittsöffnung im Rotorgehäuse zumindest teilweise und insbesondere vollständig überdeckt, um den Fluideintrag in das Innere des Rotorgehäuses durch die Reinigungsleiste nicht zu behindern. Die Durchtrittsöffnung in der Reinigungsleiste ist dabei in Relation zur Durchtrittsöffnung im Rotorgehäuse bevorzugt deckungsgleich ausgeführt. Wird die Reinigungsleiste nun durch Schläge und/oder Rüttelbewegungen in Bewegung gesetzt, bewegt sie sich insbesondere in unmittelbarer Nähe zum Fluidauslass und sorgt speziell in diesem Bereich und über die Durchtrittsöffnung hinweg für ein Ablösen entsprechender Anhaftungen. Auf diese Weise lässt sich besonders effizient der Bereich des wenigstens einen Fluidauslasses und der diesen benachbarten Umgebung durch die Reinigungsleiste von Anhaftungen befreien und/oder Verstopfungen in den Durchtrittsöffnungen (im Rotorgehäuse und/oder in der Reinigungsleiste) verhindern beziehungsweise lösen.It is further preferably provided that the cleaning strip is arranged overlapping at least one fluid outlet arranged in the rotor housing and has at least one through-passage, via which the fluid can be introduced from the fluid outlet into the interior of the rotor housing or through which the fluid outlet protrudes. With fluid outlet thus a passage opening in the rotor housing is designated, through which either fluid is sprayed into the interior of the rotor housing or through which an outlet device for fluid, in particular a fluid nozzle, is guided into the interior of the rotor housing. At the same time not only in the rotor housing, but also in the cleaning strip a recess is arranged, which at least partially and in particular completely covers the passage opening in the rotor housing in order not to hinder the fluid entry into the interior of the rotor housing by the cleaning strip. The passage opening in the cleaning strip is preferably made congruent in relation to the passage opening in the rotor housing. If the cleaning strip is now set in motion by blows and / or shaking movements, it moves in particular in the immediate vicinity of the fluid outlet and, especially in this area and across the passage opening, removes corresponding adhesions. In this way, the region of the at least one fluid outlet and the environment adjacent to it can be particularly efficiently cleared of adherences by the cleaning strip and / or prevent or dissolve blockages in the passage openings (in the rotor housing and / or in the cleaning strip).
Die Reinigungsleiste ist daher besonders bevorzugt an ihrer den Überlappungsbereich mit dem wenigstens einen Fluidauslass gegenüber liegenden Seite mit dem Rotorgehäuse verbunden. Auf diese Weise ist gewährleistet, dass sich die Reinigungsleiste im Bereich des Fluidauslasses beim Aufbringen eines Schlages oder einer Rüttelbewegung besonders stark bewegt und damit ein besonders effizienten Reinigungsvorgang auslöst.The cleaning strip is therefore particularly preferably connected to the rotor housing at its side opposite the overlap region with the at least one fluid outlet. In this way, it is ensured that the cleaning strip in the region of the fluid outlet when applying a shock or a shaking movement moves particularly strong and thus triggers a particularly efficient cleaning process.
Zur Aufbringung von Schlägen und/oder Rüttelbewegungen auf die Reinigungsleiste kann auf eine Vielzahl verschiedener Ausführungsmöglichkeiten zurückgegriffen werden. Im einfachsten Fall ist beispielsweise die wenigstens eine Durchtrittsöffnung im Rotorgehäuse so groß bemessen, dass die Schläge direkt von außerhalb des Rotorgehäuses manuell, beispielsweise mit einem Hammer, auf die Reinigungsleiste durchgeführt werden können. Selbstverständlich können auch mehrere Durchtrittsöffnungen nebeneinander, insbesondere über die Erstreckung der Reinigungsleiste in Axialrichtung verteilt, angeordnet werden, um möglichst über die gesamte Breite der Reinigungsleiste Schläge aufbringen zu können.For applying beats and / or shaking movements on the cleaning strip can be used on a variety of different design options. In the simplest case, for example, the at least one passage opening in the rotor housing dimensioned so large that the blows can be performed directly from outside the rotor housing manually, for example with a hammer on the cleaning bar. Of course, a plurality of passage openings adjacent to each other, in particular distributed over the extension of the cleaning strip in the axial direction, can be arranged in order to apply as possible over the entire width of the cleaning strip punches can.
Aus beispielsweise Stabilitätsgründen ist es jedoch vorteilhaft, wenn die wenigstens eine Durchtrittsöffnung, über die Schläge und/oder Vibrationen auf die Reinigungsleiste aufbringbar sind, möglichst klein ausgebildet werden kann. In diesem Zusammenhang hat sich die Verwendung einer Übertragungseinrichtung als Teil der Reinigungseinrichtung bewährt, über die außerhalb des Rotorgehäuses aufgebrachte Schläge und/oder Schwingungen auf die Reinigungsleiste im Inneren des Rotorgehäuses übertragbar sind. Bei dieser Ausführungsform werden die Schläge und/oder Rüttelbewegungen somit nicht mehr unmittelbar auf die Reinigungsleiste aufgebracht, sondern auf die Übertragungseinrichtung, die die durch die Schläge und/oder Rüttelbewegungen hervorgerufenen Impulse auf die Reinigungsleiste überträgt. Die Übertragungseinrichtung ist dazu insbesondere durch die Durchtrittsöffnung hindurchgeführt.However, for stability reasons, for example, it is advantageous if the at least one passage opening, via which impacts and / or vibrations can be applied to the cleaning strip, can be made as small as possible. In this context, the use of a transmission device has proved to be a part of the cleaning device, can be transmitted via the outside of the rotor housing applied shocks and / or vibrations to the cleaning strip in the interior of the rotor housing. In this embodiment, the beating and / or shaking movements are thus no longer applied directly to the cleaning strip, but to the transmission device, which transmits the caused by the shocks and / or Rüttelbewegungen pulses to the cleaning bar. The transmission device is in particular passed through the passage opening.
Konkret kann es sich bei der Übertragungseinrichtung beispielsweise um ein mit der Reinigungsleiste verbundenen Bolzen handeln, der nach außen über die Außenoberfläche des Rotorgehäuses vorsteht. Auf den Bolzen können Schläge und/oder Rüttelbewegungen von außerhalb des Rotorgehäuses aufgebracht werden, die über den Bolzen in das Innere des Rotorgehäuses auf die Reinigungsleiste übertragen werden. Bei dieser Ausführungsform ist die Übertragungseinrichtung somit mit der Reinigungsleiste verbunden. Es versteht sich von selbst, dass auch mehrere Bolzen an einer Reinigungsleiste angeordnet sein können.In concrete terms, the transmission device may be, for example, a bolt connected to the cleaning strip, which protrudes outward beyond the outer surface of the rotor housing. Shocks and / or shaking movements from outside the rotor housing can be applied to the bolts, which are transmitted via the bolt into the interior of the rotor housing on the cleaning strip. In this embodiment, the transmission device is thus connected to the cleaning strip. It goes without saying that several bolts can be arranged on a cleaning strip.
Alternativ zur Anordnung der Übertragungseinrichtung direkt an der Reinigungsleiste, ist auch eine Anordnung der Übertragungseinrichtung am Rotorgehäuse möglich. Hierzu kann die Übertragungseinrichtung beispielsweise einen am Rotorgehäuse in einer Bolzenführung verschieblich gelagerten Schlagbolzen umfassen. Die Bolzenführung ist dabei in der Weise ausgebildet, dass der Schlagbolzen, üblicherweise linear, zwischen einer Ausgangsstellung und einer Abschlagstellung bewegbar ist, in der der Schlagbolzen die Reinigungsleiste zumindest teilweise in den Innenraum des Rotorgehäuses eindrückt. Der Schlagbolzen ist mit anderen Worten verschieblich gelagert und kann die Position und insbesondere Biegestellung der Reinigungsleiste ändern. Bei der Bolzenführung kann es sich beispielsweise um ein Führungselement mit einer Verliersicherung für den Schlagbolzen handeln. Werden Rüttelbewegungen und/oder Schläge auf den Schlagbolzen aufgebracht, werden diese geführt durch den Schlagbolzen auf die Reinigungsleiste im Inneren des Rotorgehäuses übertragen. Der Schlagbolzen steht dazu mit einem Aufnahmeteil über die Bolzenführung, vergleichbar mit dem vorstehenden Bolzen, vor. Besonders effektiv ist es, wenn der Schlagbolzen federbeaufschlagt ist, wobei die Federbeaufschlagung den Schlagbolzen von der Reinigungsleiste bevorzugt in eine Ausgangsstellung weg drückt.As an alternative to the arrangement of the transmission device directly on the cleaning strip, an arrangement of the transmission device on the rotor housing is possible. For this purpose, the transmission device may comprise, for example, a firing pin displaceably mounted on the rotor housing in a bolt guide. The bolt guide is formed in such a way that the firing pin, usually linear, between a starting position and a tee position is movable, in which the firing pin at least partially pushes the cleaning bar in the interior of the rotor housing. The firing pin is in other words slidably mounted and can Change the position and in particular the bending position of the cleaning strip. The bolt guide may be, for example, a guide element with a captive securing device for the firing pin. If shaking movements and / or impacts are applied to the firing pin, these are guided by the firing pin to the cleaning strip in the interior of the rotor housing. The firing pin projects with a receiving part over the bolt guide, similar to the protruding bolt before. It is particularly effective when the firing pin is spring-loaded, wherein the spring action pushes the firing pin of the cleaning strip preferably in a starting position away.
Grundsätzlich ist es erfindungsgemäß vorgesehen, dass die Schläge und/oder Rüttelbewegungen manuell, beispielsweise mit einem Hammer, einer Kurbeleinrichtung etc., aufgebracht werden können. In einer bevorzugten Ausführungsform ist jedoch eine Antriebseinrichtung zur automatischen Durchführung der Reinigungsfunktion mit Hilfe der Reinigungseinrichtung vorhanden. Bei der Antriebseinrichtung handelt es sich somit um ein Element, welches zum Antrieb der Schlag und/oder Rüttelbewegung auf die Reinigungsleiste, direkt oder indirekt, dient. Die Antriebseinrichtung kann dazu beispielsweise ein Elektromotor, ein Hydraulikmotor, etc., sein.In principle, it is provided according to the invention that the beats and / or shaking movements can be applied manually, for example with a hammer, a crank mechanism, etc. In a preferred embodiment, however, a drive device for automatically performing the cleaning function by means of the cleaning device is present. The drive device is thus an element which serves to drive the impact and / or vibration movement on the cleaning strip, directly or indirectly. For this purpose, the drive device can be, for example, an electric motor, a hydraulic motor, etc.
Für die konkrete Ausbildung der Antriebseinrichtung kann auf ein breites Spektrum alternativer Ausführungsformen zurückgegriffen werden. Bevorzugt ist es, wenn die Antriebseinrichtung wenigstens eines der Elemente Nockenwelle, Schwingungserreger, insbesondere Exzentererreger, Steuereinheit zur Regulation der Schlagintensität und/oder Schlagfrequenz und/oder Zeitsteuerung umfasst. Bei der Verwendung einer Nockenwelle treibt die Antriebseinrichtung die Umlaufbewegung der Nockenwelle an. Die Nocken dienen zur Auslösung der Schlag und/oder Rüttelbewegungen und sind dazu beispielsweise mit der Reinigungsleiste direkt oder einem Teil der Übertragungseinrichtung, beispielsweise einem Schlagbolzen, wirkverbunden. Mit der Nockenwelle können besonders hohe Schlagfrequenzen erreicht werden, so dass beispielsweise sogar ein kontinuierlicher Betrieb der Reinigungsfunktion im Arbeitsbetrieb des Fräsrotors möglich ist. Zur Auslösung der Reinigungsvibrationen der Reinigungsleiste kann ergänzend oder alternativ auf einen Schwingungserreger, insbesondere Exzentererreger, zurückgegriffen werden. Derartige Erreger zeichnen sich durch das Vorhandensein einer exzentrischen Masseverteilung aus, so dass bei Rotationsbewegungen Unwuchten erhalten werden, die zur Auslösung von Schlägen und/oder Rüttelbewegungen auf die Reinigungsleiste herangezogen werden können. Ergänzend oder alternativ kann ferner eine Steuereinheit zur Regulation der Schlagintensität und/oder Schlagfrequenz von der Antriebseinrichtung mit umfasst sein. Diese Ausführungsform ermöglicht es, optimale Reinigungsergebnisse zu erreichen, da die Schlagintensität und/oder die Schlagfrequenz bzw. Rüttelintensität und/oder Rüttelfrequenz speziell auf die im jeweiligen Anwendungsfall auftretenden Anhaftungen abgestimmt werden kann. Es ist schließlich auch möglich, die Antriebseinrichtung mit einer Zeitsteuerung zu versehen. Die Zeitsteuerung ist dabei in der Weise ausgebildet, dass die Reinigungsfunktion über die Reinigungsleiste automatisch nach dem Ablauf eines bestimmten Betriebsintervalls und/oder einer bestimmten Arbeitsstrecke automatisch aufgelöst wird. Insgesamt zeichnen sich die Ausführungsformen mit Antriebseinrichtung somit durch einen besonders hohen Bedienkomfort und eine zuverlässige Durchführung der Reinigungsfunktion aus.For the specific design of the drive device can be used on a wide range of alternative embodiments. It is preferred if the drive device comprises at least one of the elements camshaft, vibration exciter, in particular eccentric exciter, control unit for regulating the impact intensity and / or beat frequency and / or timing. When using a camshaft, the drive means drives the orbital motion of the camshaft. The cams are used to trigger the impact and / or shaking and are, for example, with the cleaning bar directly or part of the transmission device, such as a firing pin, operatively connected. With the camshaft particularly high impact frequencies can be achieved, so that, for example, even a continuous operation of the cleaning function during operation of the milling rotor is possible. To trigger the cleaning vibrations of the cleaning strip can be additionally or alternatively resorted to a vibration exciter, in particular exciter exciter. Such exciters are characterized by the presence of an eccentric mass distribution, so that imbalances are obtained during rotational movements, which can be used to trigger blows and / or Rüttelbewegungen on the cleaning bar. Additionally or alternatively, a control unit for regulating the intensity and / or impact frequency of the drive device may also be included. This embodiment makes it possible to achieve optimum cleaning results, since the impact intensity and / or the beat frequency or shaking intensity and / or shaking frequency specifically to those in the respective Application occurring adhesions can be adjusted. Finally, it is also possible to provide the drive device with a time control. The time control is designed in such a way that the cleaning function is automatically resolved via the cleaning bar automatically after the expiry of a certain operating interval and / or a certain working distance. Overall, the embodiments with drive device are thus characterized by a particularly high ease of use and reliable performance of the cleaning function.
Weitere Variationsmöglichkeiten der Erfindung ergeben sich beispielsweise im Hinblick auf die Ausbildung der Reinigungsleiste. Diese ist bevorzugt als in einer Ebene planes Element ausgebildet, um im an der Innenwand des Rotorgehäuses anliegenden Zustand einen möglichst geringen Platzbedarf zu haben, obwohl grundsätzlich auch die Verwendung von Reinigungsleisten mit dreidimensionalen Verformungen, beispielsweise Biegungen, möglich ist. Dabei kann die Reinigungsleiste ferner als vollflächiges Element vorgesehen sein. Insbesondere für den Einsatz in einem Rotorgehäuse mit einer Einsprüheinrichtung weist die Reinigungsleiste aber Durchgangsöffnungen für den Fluid- und/oder Düsendurchlass auf. Es können auch unabhängig von der Fluidversorgung Öffnungen in der Reinigungsleiste vorgesehen sein, um beispielsweise die Reinigungseffekte zu verbessern. Auch die Verwendung von Einschnitten, um beispielsweise zinkenähnliche Strukturen zu erhalten, oder weiterer Formvarianten kann vorteilhaft sein.Further variations of the invention will become apparent, for example, with regard to the design of the cleaning strip. This is preferably designed as a flat plane element in order to have the smallest possible space in the voltage applied to the inner wall of the rotor housing state, although in principle the use of cleaning strips with three-dimensional deformations, such as bends, is possible. In this case, the cleaning strip can also be provided as a full-surface element. However, in particular for use in a rotor housing with a spraying device, the cleaning strip has passage openings for the fluid and / or nozzle passage. It can also be provided independently of the fluid supply openings in the cleaning strip, for example, to improve the cleaning effects. Also, the use of cuts, for example, to obtain tine-like structures, or other shape variants may be advantageous.
Die Erfindung betrifft ferner eine Fräsvorrichtung zur Bearbeitung von Bodenmaterial mit einem Rotorgehäuse, wie es in den vorhergehenden Absätzen beschrieben worden ist. Der grundsätzliche Aufbau solcher Fräsvorrichtungen ist bekannt. Neben der Verwendung in einem Rotorgehäuse einer als Anbaufräse ausgebildeten Fräsvorrichtung, bietet sich das erfindungsgemäße Rotorgehäuse auch zur Verwendung in einer selbstfahrenden Fräsvorrichtung, insbesondere einer Straßenfräse, einem Recycler oder einem Stabilisierer, an.The invention further relates to a milling device for processing soil material with a rotor housing, as has been described in the preceding paragraphs. The basic structure of such milling devices is known. In addition to being used in a rotor housing of a milling device designed as a cultivator, the rotor housing according to the invention is also suitable for use in a self-propelled milling device, in particular a road milling machine, a recycler or a stabilizer.
Die Erfindung erstreckt sich schließlich auch auf ein Verfahren zur Reinigung eines Rotorgehäuses von im Inneren anhaftenden Bodenmaterial, insbesondere eines Rotorgehäuses, wie es vorstehend beschrieben worden ist. Wesentlich für das erfindungsgemäße Verfahren sind dabei die Schritte "Beaufschlagen einer im Inneren eines Rotorgehäuses angeordneten Reinigungsleiste mit Schlägen und/oder Rüttelbewegungen" und "Abrütteln von an der Reinigungsleiste anhaftenden Bodenmaterial". Durch die zumindest teilweise Relativbeweglichkeit der Reinigungsleiste gegenüber dem Rotorgehäuse können Anhaftungen an der Reinigungsleiste und auch in dem die Reinigungsleiste umgebenden Bereich des Innenraums des Rotorgehäuses entfernt werden, ohne das ein aufwendiges Entfernen des Fräsrotors und/oder ein Abheben des Rotorgehäuses erforderlich ist.Finally, the invention also extends to a method for cleaning a rotor housing of internally adhering soil material, in particular a rotor housing, as described above. Essential for the method according to the invention are the steps "applying a arranged inside a rotor housing cleaning strip with shocks and / or Rüttelbewegungen" and "shaking off adhering to the cleaning strip soil material". Due to the at least partially relative mobility of the cleaning strip relative to the rotor housing can be adhesions to the cleaning strip and in which the cleaning strip surrounding area of the interior of the rotor housing can be removed, without the complicated removal of the milling rotor and / or a lifting of the rotor housing is required.
Grundsätzlich ist es zwar möglich, dass das Beaufschlagen der Reinigungsleiste mit Schlägen und/oder Rüttelbewegungen unmittelbar erfolgt. Bevorzugt ist es jedoch, wenn die außerhalb des Rotorgehäuses aufgebrachten Schläge und/oder Rüttelbewegungen mit Hilfe einer Übertragungseinrichtung von außerhalb des Rotorgehäuses auf die innerhalb des Rotorgehäuses angeordnete Reinigungsleiste übertragen werden.In principle, it is possible that the application of the cleaning strip with beats and / or Rüttelbewegungen takes place immediately. However, it is preferred if the beating and / or vibrating movements applied outside the rotor housing are transmitted by means of a transmission device from outside the rotor housing to the cleaning strip arranged inside the rotor housing.
Die Erfindung wird nachstehend anhand der in den Figuren angegebenen Ausführungsbeispiele näher erläutert. Dabei zeigen schematisch:
- Fig. 1
- eine Seitenansicht auf eine Fräsvorrichtung;
- Fig. 2
- eine perspektivische Schrägansicht auf das Rotorgehäuse aus
Figur 1 ; - Fig. 3
- eine perspektivische Schrägansicht einer alternativen Ausführungsform des Rotorgehäuses aus
Figur 2 ; - Fig. 4
- eine Querschnittsansicht durch einen Teilbereich des Rotorgehäuses aus
Figur 3 entlang der Linie I-I; - Fig. 5
- eine Querschnittsansicht durch einen Ausschnitt eines Rotorgehäuses mit Übertragungseinrichtung; und
- Fig. 6
- eine Draufsicht auf eine Reinigungsleiste.
- Fig. 1
- a side view of a milling device;
- Fig. 2
- a perspective oblique view of the rotor housing
FIG. 1 ; - Fig. 3
- an oblique perspective view of an alternative embodiment of the rotor housing
FIG. 2 ; - Fig. 4
- a cross-sectional view through a portion of the rotor housing
FIG. 3 along the line II; - Fig. 5
- a cross-sectional view through a portion of a rotor housing with transmission device; and
- Fig. 6
- a top view of a cleaning strip.
Gleiche Bauteile sind in den Figuren mit gleichen Bezugszeichen gekennzeichnet.Identical components are identified in the figures with the same reference numerals.
In
Das Rotorgehäuse 8 umfasst eine Reinigungseinrichtung 15 mit einer im Innenraum IR des Rotorgehäuses 8 angeordneten Reinigungsleiste 16. Die an der Innenseite der Vorderwand 11 flächig anliegend angeordnete Reinigungsleiste 16 (in
Bei den vorliegenden Ausführungsbeispielen ist die Reinigungsleiste 16 in Axialrichtung der Rotationsachse 14 beziehungsweise in Längsrichtung L ferner segmentartig aufgebaut und umfasst die beiden nebeneinander liegenden angeordneten baugleichen Segment 16a und 16b (beispielsweise gemäß
Die
Das Ausführungsbeispiel gemäß
Alternativ hierzu wird im Ausführungsbeispiel gemäß der
Insbesondere
Ein weiterer wesentlicher Aspekt der in
Die Arbeits- und Steuereinheit 30 kann ferner eine Zeitsteuerung umfassen, die beispielsweise den automatisierten intervallartigen Betrieb der Reinigungseinrichtung 15 im Arbeitsbetrieb ermöglicht, so dass in regelmäßigen Abständen eine Befreiung des Bereichs der Reinigungsleiste 16 und insbesondere auch der Fluiddurchlassöffnungen 17 und Fluiddüsenöffnungen 24 im Rotorgehäuse 8 stattfindet.The work and
Claims (17)
- A rotor housing (8) for a milling device (1) for soil processing, in particular for a road milling machine, a recycler or a stabilizer, having an interior (IR), which is open towards the ground, for receiving a milling rotor (9), comprising two side walls (13), a front wall (11) and a rear wall (12), the side walls (13), the front wall (11) and the rear wall (12) delimiting the interior (IR) to the outside,
characterized in that
it comprises a cleaning apparatus (15) having a cleaning strip (16) which is arranged in the interior (IR) of the rotor housing (8) and is at least partially movable in relation to the rotor housing (8), and that the rotor housing (8) comprises at least one passage opening (20), via which impacts and/or shaking movements can be applied to the cleaning strip (16) from outside the rotor housing (8), the cleaning strip (16) being at least partially movable in relation to the rotor housing (8) upon such an application of an impact or a shaking movement so that soil material (28) sticking to the cleaning strip (16) is shaken off. - The rotor housing (8) according to the preceding claim,
characterized in that
the cleaning strip (16) is partially fixedly connected to the rotor housing (8). - The rotor housing (8) according to any one of the preceding claims,
characterized in that
the cleaning strip (16) is connected to the rotor housing (8) in an edge region, in particular in a longitudinal edge region (19) of the cleaning strip (16). - The rotor housing (8) according to any one of the preceding claims,
characterized in that
the cleaning strip (16) consists of spring steel. - The rotor housing (8) according to any one of the preceding claims,
characterized in that
the cleaning strip (16) extends over almost the entire width (B) of the rotor housing (8). - The rotor housing (8) according to any one of the preceding claims,
characterized in that
the cleaning strip (16) is implemented as segmented, comprising in particular at least two cleaning strip segments (16a, 16b) arranged directly adjacent to one another along the width of the rotor housing (8). - The rotor housing (8) according to any one of the preceding claims,
characterized in that
the cleaning apparatus (15) comprises a transmission apparatus (21) via which impacts and/or vibrations applied outside the rotor housing (8) can be transmitted to the cleaning strip (16). - The rotor housing (8) according to claim 7,
characterized in that
the transmission apparatus (21) is guided through the at least one passage opening (17). - The rotor housing (8) according to any one of claims 7 or 8,
characterized in that
the transmission apparatus (21) comprises a bolt (22) which is connected to the cleaning strip (16) and which protrudes outward beyond the outer surface of the rotor housing (8). - The rotor housing (8) according to any one of claims 7 or 8,
characterized in that
the transmission apparatus (21) is a striker bolt (32) supported in a displaceable manner in a bolt guiding (31) on the rotor housing (8). - The rotor housing (8) according to claim 10,
characterized in that
the striker bolt (32) is spring-loaded. - The rotor housing (8) according to any one of the preceding claims,
characterized in that
a driving apparatus (30) for automatically executing the cleaning function and for driving the impacts and/or shaking movements on the cleaning strip is provided. - The rotor housing (8) according to claim 12,
characterized in that
the driving apparatus (30) comprises at least one of the elements- camshaft (29);- vibration exciter, in particular eccentric exciter,- control unit (30) for regulating the intensity and/or frequency of the impacts and/or the shaking movement; or- time control (30). - The rotor housing (8) according to any one of the preceding claims,
characterized in that
the cleaning strip (16) is arranged so as to overlap at least one fluid outlet (23; 24) arranged in the rotor housing (8), and that at least one passage recess (17) for the fluid or the fluid outlet is present in the cleaning strip (16). - A milling device (1) for processing soil material, in particular a road milling machine, a recycler or a stabilizer, having a rotor housing (8) according to any one of the preceding claims.
- A method for cleaning a rotor housing (8) according to any one of the preceding claims from soil material (28) adhering in the interior,
comprising the stepsa) applying impacts and/or shaking movements from outside the rotor housing (8) to a cleaning strip (16) arranged inside a rotor housing (8) so that the cleaning strip thereby moves at least partially in relation to the rotor housing (8); andb) thereby shaking off soil material (28) adhering to the cleaning strip (16). - The method for cleaning a rotor housing (8) according to claim 16,
characterized by
a transmission of impacts and/or shaking movements applied from outside the rotor housing (8) using a transmission apparatus (21).
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE201110115325 DE102011115325A1 (en) | 2011-10-07 | 2011-10-07 | Rotor housing for a tiller for soil preparation, milling device and method for cleaning a rotor housing |
Publications (3)
Publication Number | Publication Date |
---|---|
EP2578749A2 EP2578749A2 (en) | 2013-04-10 |
EP2578749A3 EP2578749A3 (en) | 2015-01-21 |
EP2578749B1 true EP2578749B1 (en) | 2017-03-22 |
Family
ID=46603522
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP12005494.5A Active EP2578749B1 (en) | 2011-10-07 | 2012-07-27 | Rotor housing for a milling device for soil treatment, milling device and method for cleaning a rotor housing |
Country Status (4)
Country | Link |
---|---|
US (1) | US9091029B2 (en) |
EP (1) | EP2578749B1 (en) |
CN (1) | CN103031802B (en) |
DE (1) | DE102011115325A1 (en) |
Families Citing this family (9)
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---|---|---|---|---|
DE102011016271A1 (en) | 2011-04-06 | 2012-10-11 | Wirtgen Gmbh | Roll housing for a work roll of a construction machine or mining machine, construction machine or mining machine, and method for monitoring the condition of a work roll of a construction machine or mining machine |
DE102012216262B3 (en) * | 2012-09-13 | 2013-10-17 | Wirtgen Gmbh | Roll housing for a work roll of a construction machine or mining machine, construction machine or mining machine, and method for monitoring the condition of a work roll of a construction machine or mining machine |
DE102013009816A1 (en) * | 2013-06-11 | 2014-12-11 | Bomag Gmbh | Ground milling machine, in particular road cold milling machine |
DE102013016127A1 (en) * | 2013-09-27 | 2015-04-02 | Bomag Gmbh | Landfill compactor |
DE102014001885A1 (en) | 2014-02-12 | 2015-08-13 | Bomag Gmbh | Method for optimizing an operating function of a ground milling machine and ground milling machine |
US10407841B2 (en) * | 2017-10-25 | 2019-09-10 | Caterpillar Paving Products Inc. | Rotary mixing system |
US10406542B1 (en) * | 2018-06-01 | 2019-09-10 | Caterpillar Paving Products Inc. | Foamed bitumen dispensing device |
US11408136B1 (en) | 2021-03-18 | 2022-08-09 | Caterpillar Paving Products Inc. | Machine and method of resisting debris accumulation on milling enclosure of machine |
CN115573231B (en) * | 2022-09-03 | 2024-04-26 | 邯郸市华威公路设计咨询有限公司 | Road marking grinds equipment in highway engineering construction |
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US4637753A (en) * | 1984-11-19 | 1987-01-20 | Cmi Corporation | Road planar having particle reducing means |
EP0348510A4 (en) * | 1987-10-23 | 1990-02-20 | Komatsu Mfg Co Ltd | Self-propelled stone crusher. |
US5354147A (en) * | 1993-07-08 | 1994-10-11 | Swisher Jr George W | Pulverizing machine having a cutter assembly towed in both forward and reverse directions |
DE19504495A1 (en) * | 1995-02-12 | 1996-08-22 | Wirtgen Gmbh | Road surface renewal machine |
DE29702162U1 (en) * | 1997-02-08 | 1998-06-10 | Wirtgen GmbH, 53578 Windhagen | Device for processing roadways, and device for producing foamed bitumen |
US6149342A (en) * | 1999-03-25 | 2000-11-21 | Cmi Corporation | Anti-bridging mechanism |
US6543963B2 (en) * | 2000-03-16 | 2003-04-08 | Bruce L. Bruso | Apparatus for high-volume in situ soil remediation |
DE10202536A1 (en) * | 2002-01-24 | 2003-08-21 | Juergen Schenk | Milling device for soil, rock, excavation or other material |
DE10213017A1 (en) | 2002-03-22 | 2003-10-09 | Wirtgen Gmbh | Process for optimizing a cutting process in road milling machines, as well as milling machine for processing road surfaces |
DE10241067B3 (en) | 2002-09-05 | 2004-04-22 | Wirtgen Gmbh | Device for working floors or roadways |
US6871807B2 (en) * | 2002-09-17 | 2005-03-29 | Robert R. Rossi, Jr. | Mobile impact crusher assembly |
JP4767661B2 (en) * | 2005-11-15 | 2011-09-07 | 酒井重工業株式会社 | Road surface cutting device, road surface cutting vehicle equipped with the same, and filter clogging prevention method |
DE102007044090A1 (en) * | 2007-09-14 | 2009-04-09 | Wirtgen Gmbh | Road milling machine or machine for the exploitation of deposits |
US8262168B2 (en) * | 2010-09-22 | 2012-09-11 | Hall David R | Multiple milling drums secured to the underside of a single milling machine |
US9011039B2 (en) * | 2011-03-24 | 2015-04-21 | Rm Equipment, Llc | Apparatuses for servicing roadways |
DE102011016271A1 (en) * | 2011-04-06 | 2012-10-11 | Wirtgen Gmbh | Roll housing for a work roll of a construction machine or mining machine, construction machine or mining machine, and method for monitoring the condition of a work roll of a construction machine or mining machine |
US8794869B2 (en) * | 2012-04-30 | 2014-08-05 | Caterpillar Paving Products Inc. | Rotary mixer and method for controlling material gradation thereof |
DE102012012395A1 (en) * | 2012-06-25 | 2014-01-02 | Wirtgen Gmbh | road milling machine |
DE102012221654A1 (en) * | 2012-11-27 | 2014-05-28 | Wirtgen Gmbh | Process for treating layers, and a construction machine, in particular a soil stabilizer or recycler |
-
2011
- 2011-10-07 DE DE201110115325 patent/DE102011115325A1/en not_active Ceased
-
2012
- 2012-07-27 EP EP12005494.5A patent/EP2578749B1/en active Active
- 2012-09-28 CN CN201210366624.6A patent/CN103031802B/en active Active
- 2012-10-04 US US13/644,299 patent/US9091029B2/en not_active Expired - Fee Related
Non-Patent Citations (1)
Title |
---|
None * |
Also Published As
Publication number | Publication date |
---|---|
US9091029B2 (en) | 2015-07-28 |
DE102011115325A1 (en) | 2013-04-11 |
CN103031802A (en) | 2013-04-10 |
EP2578749A3 (en) | 2015-01-21 |
US20130087172A1 (en) | 2013-04-11 |
CN103031802B (en) | 2015-09-09 |
EP2578749A2 (en) | 2013-04-10 |
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