WO2013072066A1 - Dispositif de fraisage pour le fraisage de chaussées ou pour le démontage de matériau de sol et poulie de renvoi pour une courroie transporteuse pour un tel dispositif de fraisage - Google Patents

Dispositif de fraisage pour le fraisage de chaussées ou pour le démontage de matériau de sol et poulie de renvoi pour une courroie transporteuse pour un tel dispositif de fraisage Download PDF

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Publication number
WO2013072066A1
WO2013072066A1 PCT/EP2012/004777 EP2012004777W WO2013072066A1 WO 2013072066 A1 WO2013072066 A1 WO 2013072066A1 EP 2012004777 W EP2012004777 W EP 2012004777W WO 2013072066 A1 WO2013072066 A1 WO 2013072066A1
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WO
WIPO (PCT)
Prior art keywords
roller
conveyor belt
milling
milling device
segments
Prior art date
Application number
PCT/EP2012/004777
Other languages
German (de)
English (en)
Inventor
Markus Meurer
Original Assignee
Bomag Gmbh
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Bomag Gmbh filed Critical Bomag Gmbh
Publication of WO2013072066A1 publication Critical patent/WO2013072066A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G39/00—Rollers, e.g. drive rollers, or arrangements thereof incorporated in roller-ways or other types of mechanical conveyors 
    • B65G39/02—Adaptations of individual rollers and supports therefor
    • B65G39/04—Adaptations of individual rollers and supports therefor the rollers comprising a number of roller forming elements mounted on a single axle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G23/00—Driving gear for endless conveyors; Belt- or chain-tensioning arrangements
    • B65G23/02—Belt- or chain-engaging elements
    • B65G23/04—Drums, rollers, or wheels
    • 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

Definitions

  • the invention relates to a milling device for milling road surfaces or to reduce soil material with a conveyor belt with a support frame, a conveyor belt, at least two rollers held by the support frame, between which the conveyor belt, the rollers is guided circumferentially, wherein one of the at least two Rolls a drive roller and the other of the at least two rollers is a deflection roller.
  • the invention further relates to a deflection roller for such a conveyor belt.
  • milling devices are known to be milled off the road surfaces or used for the degradation of soil material.
  • Both machine types have in common the basic principle that soil material is milled with a suitable milling device, in particular a milling roller, and then transported away via a conveyor belt of the milling device from the milling point, for example for loading purposes.
  • a suitable milling device in particular a milling roller
  • Such machines are referred to in particular as road milling, cold milling and, in the mining of mineral resources, as a surface miner.
  • Conveyor belts generally belong to the group of so-called continuous conveyors and are used for material forwarding and removal, in particular of bulk goods.
  • the essential elements of a conveyor belt are on the one hand a support frame, which essentially represents the support structure of the conveyor belt, and on the other hand, a conveyor belt or conveyor belt, which, circulated in circulation, conveys the material resting on it for the transport process over the transport path.
  • the conveyor belt further comprises at least two rollers held by the support frame, between which the transport belt is guided circumferentially around the rollers.
  • the at least two rollers are arranged correspondingly opposite each other and deflect the transport belt in the opposite direction.
  • One of the at least two rollers is a drive roller and the other of the at least two rollers is a deflection roller.
  • the drive roller is characterized in that it is driven directly (for example via a drum motor) or indirectly (for example, by a drive connection of the roller body of the drive roller with a separate drive unit) in its rotational movement and thus ultimately drives the circulation movement of the conveyor belt.
  • the deflection roller essentially fulfills a deflection function and is therefore essentially responsible for deflecting the transport belt in circulation operation on the side opposite the drive roller.
  • the deflection roller usually runs passively with the transport belt with, and embodiments are conceivable in which also driven the deflection roller and thus its function is a drive roller.
  • the invention thus also includes the formation of a drive roller according to the following embodiments for forming the deflection roller.
  • Such conveyor belts are used in particular in milling devices use and serve there, for example, for the removal of the milled material from the milling machine to another conveyor or, for example, to a transport container.
  • the conveyor belts are often attached to the milling device or in particular integrated into this and are thus carried along with the milling device in milling operation.
  • the invention particularly relates to the latter case.
  • Especially critical is the area in which the milled material is deposited on the conveyor belt. This is done, for example, by a passage opening which is arranged between the milling rotor and the conveyor belt receiving and over which the milled material falls from a milling rotor to the sides and upwards shielding Fräswalzenkasten on the conveyor belt down.
  • a complete removal of the milled material via the conveyor belt is desirable in order to be able to leave a clean milling bed, for example.
  • the conveyor belt and the corresponding feed space in which the milled material reaches the conveyor belt of the conveyor belt are matched to one another in such a way that the milled material passing through the passage opening from the milling drum box falls as completely as possible onto the conveyor belt and is transported away from this.
  • the space requirement of the conveyor belt, in particular in the area of Fräsgutage should be as small or narrow as possible, for example, to make the overall appearance of the milling device as compact as possible.
  • An essential aspect of the invention is that one of the at least two rollers, in particular the guide roller, according to the invention at least two roller segments, which are mounted on a common axis of rotation with a segment spacing in the axial direction spaced from each other, and that in the region of the segment distance Bearing device is arranged, which is designed to rotate about a rotation axis bearing of the at least two roller segments, wherein the bearing device is connected to the support frame.
  • the roller comprising at least two roller segments will also be referred to as a segmented roller.
  • the basic idea of the invention thus lies in the fact that, as has hitherto been customary, the regions lying in the axial direction of the rotation axis adjacent to the end faces of the deflection roller are used for mounting the hitherto integral and massive deflection roller. Lying next to the deflection roller refers to the area which lies in the axial direction of the axis of rotation of the deflection roller outwards in front of and behind the deflection roller. Typically, up to now in the axial direction on both sides protruding stub axle of the bearing axis of the deflection roller for supporting the deflection roller on the support frame were used.
  • the support frame was correspondingly far wider than the pulley per se, with the width here refers to the respective extent in the axial direction or in the axial direction of the guide roller.
  • the inventive embodiment of the deflection roller or the conveyor belt now dispenses with laterally projecting bearing axes and offset by the segmentation of the deflection roller in at least two roller segments, the roller bearing in the segment distance between the two roller segments inside.
  • the segment spacing is thus an existing between two roller segments clearance, which is not filled by parts of the roller segments.
  • At least part of the bearing device is arranged in this region and supports the at least two roller segments on the support frame.
  • the guide roller as the transport belt directly touching, leading and deflecting part is thus no longer formed as a single contiguous body, but rather from at least two axially spaced-apart roller segments or Umlenkrollen constitution.
  • the at least two roller segments thus have at least with respect to their outer lateral surface or with respect to their support surface for the conveyor belt no direct contact with each other.
  • the bearing device is thus offset on the axis of rotation from outside to inside, no storage of at least two roller segments comprehensive roles on each in the axial direction outer end faces of the guide roller is more necessary. Rather, the covered by the conveyor belt segment spacing is used for storage of the deflection roller.
  • the at least two roller segments comprehensive role can thus be formed substantially wider compared to the rollers previously used in the prior art in generic conveyor belts, which allows the use of wider conveyor belts with the same overall width of the conveyor belt or a narrower design of the conveyor belt at the same width of the conveyor belt , As a result, space can be saved, inter alia, to a considerable extent in a correspondingly formed milling device.
  • the supporting frame is therefore also preferably in the region adjacent to the deflection roller in the conveying direction region as wide as the deflection roller in the axial direction.
  • the roller segments each have fixed to them or formed out of them axle segments for storage.
  • the at least two roller segments are preferably mounted on an axle body designed as a bearing axle and designed to rotate with respect thereto or rotate with it.
  • the at least two roller segments thus have a common bearing axis, whereby the total number of required components can be reduced while optimizing assembly. It is ideal if all the roll segments of the segment roll are arranged on a common and integrally formed overall bearing axis.
  • the invention is particularly characterized by the fact that the installation space required for the installation of the conveyor belt in the axial direction next to the segment roller is particularly low. This effect is particularly particularly achieved when the axially outer end faces of the at least two roller segments are flat, in particular plan, and are free of projections. Free of supernatants is to be understood that in particular no supernatants for storage purposes are available. This excludes minimal projections, especially in the range of a few millimeters, thus not, with an actual supernatant-free training is advantageous. Due to the flat design of this area, the overall width of the segmented roll can be further minimized. The guide of the conveyor belt through the segment roller via the outer circumferential surface of the at least two roller segments.
  • the storage of the segmented roller on the support frame is carried out according to the invention in the region of the segment spacing by the bearing device.
  • the end face region of the at least two roller segments facing outward in the axial direction thus has no function for the bearing and deflection.
  • the two roller segments are formed as flat as possible and very particularly flat on their respective end face. It is advantageous if the end face is formed closed in the surface to prevent, for example, the penetration of milled material in this Stirnkappen Symposium. Free of protrusions means that in particular no axle parts and / or parts of the bearing device protrude in the axial direction outwards beyond the end caps.
  • the axially outer end faces of the at least two roller segments are thus ideally formed as plane and closed surfaces, which is particularly suitable for arrangement close to a side wall extending vertically to the axis of rotation, such as the side wall of a receiving or storage shaft for the conveyor belt in a generic milling device.
  • the distance between the two outer sides of the at least two roller segments substantially corresponds to the width of the support means.
  • the width of the support device in the axial direction of the axis of rotation of the segment roller is at most by a few centimeters larger than that Width of the segmented roll.
  • the axially outer end faces of the at least two roller segments thus preferably terminate substantially at least substantially flush with the part of the support frame adjoining in the conveying device of the conveyor belt. Seen in the axial direction of the support frame is thus substantially the same width as the width of the segment role, whereby the space required for the support frame space can be substantially reduced.
  • This structure need not necessarily continue over the entire longitudinal extent of the conveyor belt, but in particular only the subsequent to the segment role part of the support frame, in particular the subsequent 2% to 25%, especially 5% to 15% of the conveyor belt in relation on the total length of the conveyor belt, relate.
  • the entire conveyor belt or the entire support frame does not project beyond the segment roller in its axial direction.
  • individual fasteners such as Einitatistreben, etc., protrude from the support frame in the width, without affecting the essential width of the support frame construction. It is crucial that, in particular in the region of the segmented roll, the width of the segmented roll in the axial direction essentially corresponds to the width of the adjoining part of the supporting frame.
  • the relevant outer lateral surface is the lateral surface of the at least two roller segments extending around the axis of rotation. According to the invention, it is now provided that these lateral surfaces of the at least two roller segments are formed in such a manner with respect to one another that the transport belt is essentially guided and deflected by a smooth and projection-free overall lateral surface of the segment roller.
  • the lateral surface of the at least one roller segment and the lateral surface of the at least other roller segment thus preferably form a continuous and uniform straight line or curve, depending on the embodiment.
  • This straight line or curve is characterized by its continuous and stepless progression over the region of the segment distance. This ensures that the segmentation of the roller according to the invention causes no buckling or folding of the conveyor belt, but the transport belt can rest uniformly on the outer circumferential surface of the at least two roller segments as in previously known deflection rollers.
  • the two roller segments come into consideration for the concrete design of the at least two roller segments.
  • the two roller segments it is possible for the two roller segments to be designed as cylinders of the same diameter.
  • the formation of the at least two roller segments in the way has proven to be particularly suitable that they form a bulged or barrel-like or bulging body.
  • This form of a spherical segmented roller has the advantage that at the same time a centering effect of the segment roller circulating conveyor belt is achieved and thus over the conveying process, a position stabilization of the circulating conveyor belt occurs.
  • the crowned design thus has at least two roller segments whose diameter is smaller or decreases in the axial direction to the outside. It is particularly preferred if the Segment distance is not in the central region, in which the bulging segment roll has its largest diameter.
  • the segment roller comprising at least two roller segments has a total of three roller segments, wherein in this embodiment, an intermediate roller is arranged between two outer rollers in the axial direction of the segment roller. Between the two outer rollers thus a segment spacing is present in the axial direction in each case for the intermediate role, in the region of which in each case the bearing means for supporting the three roller segments is arranged.
  • the bearing device can be designed in several parts but also in one piece. This embodiment has the advantage that a particularly resilient bearing of the segmented roller is possible, since the bearing device has two spaced apart areas for supporting the segmented roller.
  • the two outer rollers are also preferably of identical design, in order to reduce the total number of different components for the conveyor belt according to the invention as possible.
  • the widths in the axial direction of the three roller segments may be the same or different. It is advantageous, however, if the two outer rollers are much narrower than the intermediate role. In this embodiment, the two outer rollers thus have a substantially smaller longitudinal extent than the intermediate roller in the axial direction.
  • ratios of the width in the axial direction of an outer roller to the intermediate roller in the range from 1: 2 to 1:10 and especially in the ratio 1: 4 to 1: 7 are particularly preferred. Due to the comparatively much wider design of the intermediate role, a particularly stable support of the conveyor belt is achieved on the segment role, since the two bearing means having segment distances are arranged in a comparatively large distance from each other. On the other hand, the width of the much narrower outer rollers is still sufficient to ensure sufficient support of the conveyor belt in the edge region.
  • the two outer rollers are ideally formed in such a way that they can be pushed onto corresponding stub axle, for example, by a bearing axis axially outwardly projecting bearing axis.
  • the outer rollers can for this purpose have a corresponding receiving bore for the stub axle. This can be open to the inside and outside of the outer roll or, preferably, be designed as a blind hole.
  • the outer rollers are then each formed as end caps, the axially outwardly facing surfaces are ideally closed and formed of the same material.
  • the individual roller segments of the segmented roller can vary in terms of training in their contact surface for the transport belt.
  • the roller segments may have a smooth and continuous lateral surface, so that the circumferential transport belt in the deflection region bears against the individual roller segments of the segment roller over its full area.
  • the formation of at least one roller segment, preferably the much wider intermediate roller, has proven to be particularly practical as a cage roller.
  • a cage roller is characterized in that it has no continuous outer circumferential surface, but rather radially spaced evenly to the axis of rotation struts, which are connected to each other via two oppositely spaced end plates, preferably at one axial end of the struts.
  • the individual struts are arranged spaced apart in the circumferential direction of the at least one roller segment, so that the cage roller has free spaces between the individual struts.
  • the transport belt is thus not in full contact with the cage roller in the deflection region, but only in the region of the radially outwardly pointing sections of the lateral surface of the individual struts.
  • the use of a cage roller is advantageous in that, for example, milled material, which gets between the conveyor belt and the at least one roller segment, for the most part does not settle in the contact area between these two elements, but falls through the free spaces present between the individual struts.
  • the segmented roll may be constructed continuously from full-surface or even continuously formed in the form of a cage roller roller segments. Of course, mixed forms are possible, wherein in particular in a three roller segments comprehensive segment role, the two outer rollers with continuous lateral surface and the wider larger intermediate role is designed as a cage roller.
  • the specific design of the storage facility can vary.
  • the presently eligible storage facilities must meet certain minimum requirements in order to be suitable for use according to the invention in a milling device.
  • An essential feature of the bearing device is at least its first at least partial intervention in the region of the respective segment spacing between two axially adjacent roller segments and their direct or indirect storage of at least two roller segments.
  • the storage device must be designed in such a way that it does not hinder the circulation path of the conveyor belt, if possible not projecting laterally beyond the section of the segment roller in the axial direction of the conveyor belt, and at the same time enables stable storage of the segmented roller on the support frame of the conveyor belt.
  • the bearing device has, for example, an axle bearing and a connection support extending in the conveying direction between the two roller segments to the support frame.
  • the axle bearing forms that part which is for receiving and supporting a bearing axle carrying at least two roller segments.
  • the connecting support is the link between the axle and the support frame.
  • the connecting support has for this purpose preferably in the direction of the longitudinal extent of the conveyor belt facing away from the segment role support body, which is connected, for example, with a transverse strut of the support frame.
  • the connecting support may be fork-shaped, in particular in the presence of two or more mutually axially spaced segment distances (for example, in one embodiment, the segment role with a total of three roller segments), wherein the two spaced apart fork projections each engage in one of the two segment distances.
  • this is preferably formed mirror-symmetrically together with the bearing device.
  • the mirror surface extends, for example, in particular perpendicular to the axis of rotation of the segmented roller. This ensures that the bearing of the conveyor belt is formed from the center of the segment role starting on both sides in the axial direction uniform.
  • the solution of the problem finally succeeds with a segmented roller, as has been described above for the conveyor belt according to the invention, which is intended for installation in such a conveyor belt.
  • the conveyor belt with the above features is part of the milling device, in particular for the milling of road surfaces or for the degradation of soil material.
  • Such generic milling devices are characterized essentially by the presence of a milling rotor arranged transversely to the working direction, which mills soil material with rotationally distributed working tools distributed over its outer peripheral surface.
  • Such milling devices often have a machine frame on which the milling rotor is mounted.
  • the milling depth is possible in such milling devices, for example via a height adjustment of chassis components and / or an adjustment of the milling rotor in the vertical direction relative to the machine frame.
  • Typical fields of application include, for example, road construction, in which, in particular, cold milling machines are used particularly efficiently for milling road surfaces.
  • milling devices are, for example, for the degradation of soil material, especially in open pit mining, used.
  • a common feature of these milling devices is the use of a rotating milling rotor for material removal and the moving over the ground milling device in the milling operation. Often, such milling devices are also designed accordingly self-propelled.
  • the removal of the milled material represents a particular challenge in such milling devices.
  • the milled material is usually not lie on the run over ground, but are as completely removed from the milling rotor, for example, to a transport vehicle in the milling operation.
  • This is usually done with at least one conveyor belt, which is arranged in the interior of the milling device and / or attached to this.
  • the conveyor belt according to the invention since thereby the removal of the material to be milled improved and / or the space of the milling device, in particular in the interior of the milling device, can be utilized more efficiently.
  • the conveyor belt can be arranged, for example, in a storage shaft of the milling device, wherein the storage shaft extends, for example, substantially from a feed point of the material to be milled, on which the milled material is deposited on the conveyor belt, to at least one discharge area, preferably in the outer region of the milling device, for example up to a transfer point on another trailer conveyor for milling material loading.
  • the bearing shaft thus represents a longitudinally extending clearance in the interior of the milling device, for example, formed by parts of the machine frame, which is provided for receiving the conveyor belt.
  • the conveyor belt can be fixedly connected to the milling device, for example in the storage shaft.
  • the conveyor belt as a whole is an exchange unit or an exchange module, which can be quickly installed and removed in its entirety. This is particularly advantageous for maintenance and repair purposes, for example, as this can significantly reduce the downtime of the milling device.
  • An exchange module is characterized essentially by the fact that it can be installed and removed as a whole in the milling device and is ideally mounted on the milling device via suitable quick-release systems.
  • the milling rotor of the milling device is often surrounded by a milling rotor upwards and to the sides shielding Fräswalzenkasten in which the milled material accumulates and is transported away from this.
  • a corresponding outlet opening in the milling drum box is provided, through which the milled material can emerge from the interior of the Fräswalzenkastens in milling operation.
  • the area in which the milled material is fed onto the conveyor belt is referred to below as the feed space.
  • the segment roller of the conveyor belt is preferably arranged adjacent to this Fräswalzenkasten to allow the most efficient transfer of the milling material from the milling drum box on the conveyor belt in the feed area.
  • the segmented roll is ideally matched to the dimensions of the feed space in such a way that its width extends in the axial direction almost over the entire width of the feed space.
  • the segmented roller thus does not abut the side walls of the feed space with its outer sides or end faces lying in the axial direction, but is as close as possible to these side walls in order to cover the width of the feed space as completely as possible.
  • the segmented roller is thus directly adjacent in the axial direction of the bearing shaft wall, without intervening storage facility. This prevents falling out of milled material on the outer sides of the conveyor belt in the feed space. This is achieved particularly well with the above-described conveyor belt, in that the segmented roller or the conveyor belt guided by the segmented roller can be formed as wide as the feed space in this area since no further storage facilities laterally adjoining the segmented roller are required.
  • the invention further relates to a conveyor belt with the features given above for a milling device.
  • the invention will be explained below with reference to the exemplary embodiments indicated in the figures. Identical components are identified by the same reference numerals. They show schematically:
  • Figure 1 is a side view of a milling device with a conveyor for milled material.
  • Figures 2a and 2b is an oblique perspective view and a side view of the tip portion of a conveyor belt with segmented roller;
  • Fig. 2c is a plan view of the tip region of the conveyor belt analogous to
  • FIGS 3a, 3b and 3c rear views of the conveyor belt of Figures 2a and 2b ( Figures 3a, 3b and 3c rear views of the conveyor belt of Figures 2a and 2b ( Figures 3a, 3b and 3c rear views of the conveyor belt of Figures 2a and 2b ( Figures 3a, 3b and 3c rear views of the conveyor belt of Figures 2a and 2b ( Figures 3a, 3b and 3c rear views of the conveyor belt of Figures 2a and 2b ( Figures
  • Fig. 1 illustrates essentially the basic structure and the process of Fräsguttransportes in a milling device 1, specifically a self-propelled cold milling road.
  • the milling device 1 comprises a machine frame 2 with a driver's cab 3, the machine frame 2 being supported by lifting columns 4 with caterpillars 5 in a height-adjustable manner. Further, a milling rotor 6 is present, which is performed in the milling operation on the soil to be processed 7 in the working direction a and thereby milled soil material in the milling depth FT from the bottom 7.
  • the milling device 1 is designed as a self-propelled unit and further includes a non-descript drive motor.
  • the milling rotor 6 is surrounded by a milling drum box 8, which essentially collects the milled material and charges to a conveyor belt 9 via an unspecified outlet opening.
  • the conveyor belt 9 extends from the Fräswalzenkasten 8 to the front outer area of the milling device 1.
  • There is another conveyor belt 10 is present, which is attached in the working direction a forward projecting to the milling device 1 and for loading, for example, a transport vehicle used.
  • the conveyor belts 9 and 10 each have a transport belt 1 1, which is guided in each case two deflection rollers 12/12 'circumferentially on a in Fig. 1 unspecified support frame of the conveyor belt 9 and 10 respectively.
  • the conveying direction of the two conveyor belts 9 and 10 is indicated in Fig.
  • support rollers 13 are also present, which substantially prevent sagging of the respective conveyor belt 1 1, but do not exercise deflecting or drive functions.
  • the support rollers 13 are each designed as a roller chair (recognizable, for example, in Figures 2a and 3b) and comprise at least two rollers whose axes of rotation are at an angle to each other.
  • One of the two deflection rollers 12 of each conveyor belt 9 and 10 is further designed as a so-called drive roller (for further clarification with 12 ').
  • the drive roller 12 ' directly has a drive element or is connected to a drive element and brings the required for the orbital movement of the conveyor belt 1 1 driving force in the conveyor belt 9, 10 a.
  • FIGS. 2a, 2b, 2c, 3a, 3b and 3c give the indicated in the dashed box K of Figure 1 area of the conveyor belt 9 in more detail again.
  • FIGS. 2c and 3c relate to an alternative embodiment of this region, or In particular, FIGS. 2a to 3c illustrate the region of the conveyor belt 9 arranged close to the milled material outlet of the milling drum box 8 inside the milling device 1, which is arranged in a bearing shaft 14 (FIG.
  • Essential elements of the conveyor belt 9 are a support frame 15, the transport belt 1 1, at least two rollers 12/12 'held by the support frame 15 (wherein only one of the at least two rollers is visible in FIGS. 2a and 2b), one being the at least two rollers are a drive roller 12 'and the other of the at least two rollers is a deflection roller 12.
  • the support frame 15 comprises extending in the longitudinal direction of the conveyor belt struts 16, which are connected to each other via cross struts 17 which extend transversely to the direction of rotation of the conveyor belt 1 1.
  • the support structure thus has a basic structure similar to a ladder.
  • the conveyor belt 9 further comprises bearing elements 18, which are arranged on the support frame 15, specifically the support struts 16, and serve for storage and attachment of the conveyor belt 9 in the bearing shaft 14 of the milling device 1.
  • the transport belt 1 1 is movably mounted on the support frame 15, wherein the upper Gurttrum is guided in the direction of arrow b on the longitudinal upper side of the support frame and extending on the underside of the support frame 15 lower Gurttrum contrary to the direction of arrow b.
  • the transport belt 1 1 thus the guide roller 12 and the drive roller 12 'mounted circumferentially on the support frame.
  • the transport belt 1 1 In the lower region of the conveyor belt 9, which is oriented toward the milling drum box 8, the transport belt 1 1 thus runs toward the deflection roller 12, revolves it and is subsequently led away from the deflection roller 12 to the drive roller 12 'in the conveying direction b.
  • the deflection roller 12 rotates about the rotation axis 19.
  • the deflection roller 12 is connected via a bearing device 20 with one of the transverse struts 17 of the support frame 15. Further details of the storage device 20 can be found in particular in the alternative embodiment according to FIG. 2c.
  • the bearing device 20 comprises two bearing struts 20a and 20b which lie in the axial direction of the rotation axis 19 within the end faces of the deflection roller 12 and establish a bearing connection between the support frame 15 and the deflection roller 12.
  • transverse struts 20a and 2b arranged in the transport direction b within the width A1 extend from the support frame transversely to the rotation axis 19 into the segment spacings 27a and 27b and have suitable receiving bearings for the deflection roller 12 in this region.
  • Figures 2a and 2b also illustrate a change in the shape of the conveyor belt 9 in dependence on the respective section of the conveyor line.
  • the transport belt 1 1 bulges due to the below described in more detail spherical formation of the guide roller 12 to the center in the axial direction, which ultimately a particularly reliable belt guide to the guide roller 12 has the consequence.
  • the transport belt 1 1 flows smoothly into a trough-like or trough-like profile, in which the outer edges of the transport belt 11 in the relationship from the bottom to the top of the trough.
  • This trough shape is caused by the special design of the support rollers 13, which are stored here in a roller chair 34 and per support roller 13 comprises a horizontal base roller 23 and to both outer sides of the conveyor belt 9 each an upwardly employed mounted inclined roller 24.
  • the support roller designated by reference numeral "13" in Fig. 1 thus comprises a total of three roller members whose individual rotation axes are at an angle to one another so as to obtain a transport tray for the transport belt 1.
  • the three roller members 23 and 24 thus have in contrast to the roller segments 25a, 25b and 26 of the deflection roller 12, which are described below, there are no common or coaxial rotational axes.
  • Fig. 2a further illustrates that the width B, the conveyor belt 1 1, the width B 2 of the support frame 15 and the distance A-, the end faces of the guide roller 12 in the axial direction of the rotation axis 19 of the guide roller 12 are very similar, ie the transport belt 11 is formed at least in the tip region 29 almost as wide as the entire conveyor belt in this area. Parts of the support frame 15 and the guide roller 12 are available only with an extremely small distance in the axial direction of the axis of rotation 19 or laterally of the conveyor belt 9, as in Fig.
  • FIGS. 3b and 3c show the frontal view according to arrow c from FIGS. 2a and 2b on the conveyor belt 9 again, wherein the transport belt 11 has been removed.
  • the diverting pulley 12 comprises a total of three roller segments 25a, 25b and 26.
  • the three roller segments 25a, 25b and 26 are each about the axis of rotation 19, i. about the common axis of rotation 19, rotatable.
  • the individual axes of rotation of the roller segments 25a, 25b and 26 are thus coaxial with each other.
  • the roller segments 25a, 25b and 26 are arranged side by side along the axis of rotation 19, wherein the roller segment 26 is disposed between the outer in one direction roller segment 25a and in the other direction of the rotation axis 19 outer roller segment 25b.
  • the three roller segments 25a, 25b and 26 do not abut one another directly with their outer circumferential surfaces carrying the transport belt 11, but are spaced apart from each other by a respective segment spacing 27a or 27b.
  • an axle bearing 28 is arranged as part of the bearing device 20, which serves to support the common bearing axis 29 of the three roller segments 25a, 25b and 26 on the support frame 15 of the conveyor belt 9.
  • the roller segment 26 (hereinafter referred to as the central roller) is in its axial width AB, (the axial width indicates the width in the axial direction of the rotation axis 19) substantially wider than the axial width AB 2 of the two roller segments 25a and 25b (factor larger 2, in particular larger 4).
  • the Haupttrag- and deflection function for the transport belt 1 1 is thus achieved substantially by the central roller 26.
  • the roller segments 25a and 25b are further formed as end caps 35, and have a nearly flat, continuous end face.
  • the guide roller 12 is also formed in its entirety in the radial direction spherically and free of projections in the radial and axial directions. An overhang is an abrupt elevation, such as a laterally projecting end of a bearing axis, etc.
  • the dashed curve 30, which extends the axially extending outer edge of the central roller 26 and the roller segments 25a and 25b represents.
  • the width AB 3 of the segment distances 27a and 27b is thus selected in such a way that the curve 30, for example starting from the outer edge of the central roller 26, is continuously continued over the respective segment spacing 27a or 27b with the outer edge of the respective roller segments 25a or 25b.
  • the overall design of the outer jacket of the deflection roller 12 is thus oriented on a barrel-like base body, from which the areas of the segment spacings 27a and 27b are cut out like a disk.
  • the width AB 3 of the segment distances 27a and 27b in the axial direction of the axis of rotation 19 corresponds approximately to the width AB 2 of the roller segments 25a and 25b.
  • the guide roller 12 is also mirror-symmetrical with respect to a plane of symmetry 31 which extends centrally perpendicular to the axis of rotation 19 through the guide roller 12.
  • FIGS 2c and 3c finally relate to another embodiment of the central roller 26 in the form of a cage roller 26 '.
  • the rest of the structure of the conveyor belt corresponds to the previous embodiment, to which reference is hereby made.
  • the cage roller 26 ' is distinguished from the previous embodiments in that it has no closed and continuous outer circumferential surface. Rather, individual transverse struts 32 are present, which extend substantially parallel to the axis of rotation 19 from one side of the central roller to the other side of the central roller. If the transport belt 1 1 installed in the conveyor belt 9, it is not in full circulation on the cage roller 26 in circulation mode, but in each case only on the outer edges of the individual transverse struts 32. Thus, for example, between the conveyor belt by the existing free spaces 33 between the individual transverse struts 32 1 1 and the guide roller 12 advised milled material to be removed.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Structure Of Belt Conveyors (AREA)

Abstract

L'invention concerne une poulie de renvoi qui présente au moins deux segments de rouleaux (25a, 25b, 26) séparés les uns des autres et placés sur un axe de rotation commun. La poulie de renvoi est placée de manière à pouvoir tourner par le biais d'un dispositif de palier (28), qui relie l'intervalle entre les segments de rouleaux et le cadre. L'invention concerne en outre une courroie transporteuse équipée de cette poulie de renvoi et un dispositif de fraisage équipé d'une courroie transporteuse dotée de cette poulie de renvoi.
PCT/EP2012/004777 2011-11-17 2012-11-16 Dispositif de fraisage pour le fraisage de chaussées ou pour le démontage de matériau de sol et poulie de renvoi pour une courroie transporteuse pour un tel dispositif de fraisage WO2013072066A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102011118791.3 2011-11-17
DE102011118791.3A DE102011118791B4 (de) 2011-11-17 2011-11-17 Förderband zur Verwendung in einer Fräsvorrichtung und Fräsvorrichtung mit einem solchen Förderband

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WO2013072066A1 true WO2013072066A1 (fr) 2013-05-23

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DE102013012456A1 (de) 2012-07-31 2014-02-06 Bomag Gmbh Baumaschine mit Abwärmerückgewinnung

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DE102013000983B4 (de) * 2012-01-23 2015-06-03 Fred Bauersfeld Stetigförderer
NO2791336T3 (fr) * 2015-04-28 2018-04-28
CN112374046A (zh) * 2020-11-30 2021-02-19 广州奔德网络科技有限公司 一种用于手表制造过程中的传送装置

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GB1032918A (en) * 1963-10-30 1966-06-15 Brockway Eng Co Ltd Bearings for spindles of idler rollers for endless belt conveyors
DE2447156A1 (de) * 1973-10-22 1975-04-24 Nagema Veb K Spann- und geradlaufeinrichtung fuer foerdergurte
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DE102011118791A1 (de) 2013-05-23

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