EP0527344B1 - Bras haveur pour machines à haver de matériau en pierre dure - Google Patents

Bras haveur pour machines à haver de matériau en pierre dure Download PDF

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Publication number
EP0527344B1
EP0527344B1 EP92111939A EP92111939A EP0527344B1 EP 0527344 B1 EP0527344 B1 EP 0527344B1 EP 92111939 A EP92111939 A EP 92111939A EP 92111939 A EP92111939 A EP 92111939A EP 0527344 B1 EP0527344 B1 EP 0527344B1
Authority
EP
European Patent Office
Prior art keywords
belt
cutting
diamond
cutting belt
belt body
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.)
Expired - Lifetime
Application number
EP92111939A
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German (de)
English (en)
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EP0527344A3 (fr
EP0527344A2 (fr
Inventor
Horst Dipl.-Ing. Weisner
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Maschinenfabrik Korfmann GmbH
Original Assignee
Maschinenfabrik Korfmann GmbH
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Filing date
Publication date
Application filed by Maschinenfabrik Korfmann GmbH filed Critical Maschinenfabrik Korfmann GmbH
Publication of EP0527344A2 publication Critical patent/EP0527344A2/fr
Publication of EP0527344A3 publication Critical patent/EP0527344A3/fr
Application granted granted Critical
Publication of EP0527344B1 publication Critical patent/EP0527344B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28D—WORKING STONE OR STONE-LIKE MATERIALS
    • B28D1/00—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor
    • B28D1/02—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by sawing
    • B28D1/12—Saw-blades or saw-discs specially adapted for working stone
    • B28D1/124—Saw chains; rod-like saw blades; saw cables
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28D—WORKING STONE OR STONE-LIKE MATERIALS
    • B28D1/00—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor
    • B28D1/02—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by sawing
    • B28D1/08—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by sawing with saw-blades of endless cutter-type, e.g. chain saws, i.e. saw chains, strap saws
    • B28D1/082—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by sawing with saw-blades of endless cutter-type, e.g. chain saws, i.e. saw chains, strap saws consisting of chain saws

Definitions

  • the diamond plates which here are optionally C-shaped and / or L-shaped, also lie flat on the strands of the belt body movement, but here there is a sheet between the strands and the underside of the diamond plates, which is correspondingly C or L-shaped.
  • the diamond plates are supported on the interposed sheets.
  • the anchoring of the diamond plates in the belt body is rather worse than in the exemplary embodiment described above, because the interposition of C-shaped or L-shaped plates necessitates an additional fastening of the plates on both sides to the diamond plates and to or in the belt body, and in this respect one additional attachment must be carried out, but can also come loose in use.
  • tool carriers are also embedded flush with the surface and sides of the belt body. They also lie on the strands of wire ropes, which are arranged in a row next to one another and are embedded in the belt body.
  • drive blocks are interposed, that of bores and of those in the Boring strands are penetrated and on the top of the tool holder are soldered.
  • the drive blocks have a smaller width than the belt body, so that the tool carriers which are flush with the belt body project beyond the drive blocks on both sides.
  • Each tool carrier has one or two slots open at the front for receiving narrow diamond cutting elements which are arranged on successive tool carriers so that a profile cut can be carried out with the cutting belt, in which a certain part of the cutting profile is assigned to each diamond cutting element.
  • each diamond plate has a width which essentially corresponds to the cutting width, and the diamond plates — as seen in the running direction of the cutting belt — lie in alignment in a row.
  • a different attachment of the tool carrier is used in another known cutter arm (EP-B1-14776).
  • a continuously flat belt is used, into which neither tool carriers nor guide elements etc. are molded, but rather the plate-shaped tool carriers with diamond cutting strips are arranged on the opposite underside of the cutting belt, just like below the tool carriers Sliding shoes attached to the belt by means of bolts.
  • An extremely high water pressure in connection with a large amount of water is required to achieve a water sliding layer for separating the underside of the sliding shoes on the bottom of the guide channel.
  • the tool carriers and also underlying support and guide elements are fastened by means of screw bolts to a plastic cutting belt, even if the cutting belt is guided in the guide channel in a manner different from the cutting arm mentioned above, as will be explained later.
  • this object is achieved in that the diamond plates are fastened on solid tool carriers which have through openings such as bores or elongated holes arranged next to one another in a row or only a single elongated hole and are molded together with the diamond plates in the belt body, and in that the strands Immediately assert tool carriers by going through openings such as holes or Extend elongated holes.
  • This solution according to the innovation allows a simple and safe embedding and anchoring of the diamond plates in the belt body of the cutting belt, in that the diamond plates form a compact, robust unit with the tool carriers, which are inextricably anchored directly to the reinforcement of the belt body, by the strands, which preferably consist of wire cables the tool carrier through the reinforcement.
  • the result is a fastening of the tool carrier in the belt body, which is secure against tilting from different types and from all possible directions, and thus also the diamond plates, which are firmly connected to the tool carrier to form a single component.
  • the tool carrier the upper part of which consists of the diamond plate, thus takes over the function of absolutely secure and permanent connection of the tool or the diamond plate to the cutting belt in an arrangement embedded in the belt body and positively connected to its reinforcement. It supports the other functions of guiding and carrying the cutting belt directly on the guide and in the cutting area.
  • the tool holder which is practically coated with the diamond plate, forms an extremely robust and, in comparison to the prior art, relatively flat component, which therefore allows the use of a plastic belt body of relatively small thickness and thus a particularly tilt-resistant construction.
  • the form-fitting fastening of the tool carrier in the belt body is relatively easy to produce by first pulling the tool carrier onto the strands and the reinforcement with the diamond plates supporting tool carriers are then encapsulated in a mold for producing the belt body with plastic, the cutting surfaces necessary for the cut remaining free on the top and on the side surfaces of the diamond plates, as is preferably the bottom of the tool carrier.
  • the tool carriers have through openings for receiving the strands so that the diamond plates can be supported directly on or on the strands via the tool carriers.
  • the openings can consist of a row of holes arranged side by side, so that the strands are individually guided through corresponding openings or holes in the tool holder, preferably with a close fit, in order to anchor and support the diamond plates in the belt body as securely as possible through close contact between them to reach the tool carriers and the strands.
  • elongated holes or only a single slot-shaped elongated hole could also be provided.
  • the strands that pass through the tool carriers consist of the loops or windings of the single rope strand running through the cutting belt in multiple loops with a single connection point.
  • the splicing work during the production of the strands is considerably reduced because only the two ends of the single rope strand used are to be connected to one another. At the same time, there is no corresponding number of connection points as weak points in the reinforcement.
  • the tool carriers in the longitudinal direction of the cutting belt are each longer than the diamond plates.
  • the underside of the tool carrier should run as flush as possible with the underside of the belt body.
  • the tool carriers each end in the transverse direction of the cutting belt at a distance from the side surfaces of the belt body
  • the diamond plates are designed with an L-shaped cross section with a short and a long leg, and the short legs of the diamond plates perpendicular to the belt running direction alternating from one side to the other, bear against the inside of the tool carrier and finish flush on the outside with the respective side surface of the belt body.
  • a short leg of the associated diamond plate and a plastic extension of the belt body lie opposite each other on the sides of the tool carrier, alternately on the right and left.
  • cross-section of the upper side of the belt body and the diamond plates in cross-section run at an obtuse angle, flush with one another, and that the tool carriers are designed in a correspondingly gable-shaped manner.
  • the gable shape results in cutting force components that guide the cutting arm and prevent the cutting arm from running.
  • the diamond plates and the tool carriers are securely anchored in the belt body of the cutting belt, because, compared to the essential cutting forces, also against lateral forces, there is still a form fit between the tool carriers and diamond plates on the one hand and the embedded strands on the other hand.
  • a tool holder with a diamond plate is embedded in the belt body in a position oblique to the belt running direction for a free cut.
  • the positive locking remains. Only the bores have to be widened slightly so that the strands can penetrate the bores in a straight direction even when the tool holder is in an inclined position.
  • the new provision provides that the belt body sections between the diamond plates over the top of the cutting belt and transversely to the belt running direction have continuous grooves or troughs or the like in particular.
  • the grooves should suitably have the shape of fillets.
  • the upper side of the belt body sections between the diamond plates have zigzag-shaped, mutually engaging and adjacent grooves and / or lateral recesses pointing in the direction of the belt.
  • the web which is important for guiding the cutting belt, should also be fastened to the underside of the belt body or the tool carrier as a separately manufactured part on the underside of the belt body and the tool carrier.
  • This attachment allows the use of a simpler shape when embedding the reinforcement and the tool carrier and diamond plates in the manufacture of the belt body by plastic injection.
  • the guide channel expediently consists of two side walls, between which a recessed bar is arranged, and the inside of the side walls are intended to form a container for water for cooling the tools and as pressurized water for building up a lubricating film, the bar spacing holes for feeding of cooling water to the guide channel.
  • the web of the cutting belt which is made of plastic, is to take over the guidance of the cutting belt in the guide channel, the lower surfaces of the belt body adjoining the web on both sides and the tool carrier contributing to the guidance, namely in particular should counteract occurring tilting forces, and for this purpose it is provided according to the innovation that the web of the cutting belt which engages in the guide channel slides in operation on the surface of the bar covered with a cooling water film and the free lower surfaces of the belt body and the tool carrier slide on the outer narrow sides of the side walls of the guide channel and are led.
  • a very important development of the innovation is characterized in that the web of the cutting belt rests on an endless flexible inner belt which rotates on rolling elements which roll on the surface of the bar in the guide channel.
  • the flexible inner belt should have two guide strips arranged at a distance, which receive the web of the cutting belt between them.
  • the cutting belt is mounted on guide rollers which are rotatably mounted in the guide channel and are double-T-shaped in cross section, and the web of the belt body is accommodated in the guide region of the guide rollers is.
  • the guide rollers serve here directly for the storage and reception of the cutting belt, without the flexible inner belt.
  • they are mounted in a rotatable manner in the guide channel and carry the web of the belt body of the cutting belt directly in their upper region, where the web has a receiving surface and lateral guide surfaces on the guide rollers.
  • the attachment the tool carrier and diamond plates in the cutting belt can be designed in the same way as in the case of the aforementioned alternative development of the innovation.
  • each diamond plate is fastened on a web which is detachably fastened in a correspondingly shaped groove of the associated tool carrier which runs transversely to the longitudinal direction of the cutting belt.
  • This releasable attachment of the diamond plates, also called diamond cutting segments, to the cutting belt leads to a number of advantages, which are explained below.
  • the diamond plates can be selected depending on the type of material to be cut with regard to the grain size and bond of the diamond particles. It is possible to select the diamond plates to be attached to the cutting belt only after the cutting belt has been produced, so that the manufacturer of the cutting belt can produce a number of cutting belts independently of customer orders specified with regard to the selection of diamond plates and can fit these with the corresponding diamond plates as soon as a customer receives a cutting belt ordered according to selected diamond plates.
  • the delivery times for cutting belts are reduced for the customers.
  • the users can replace the diamond plates on the spot, for example in the quarry itself, and no longer only in the workshop if diamond plates are worn out or there is a need for another type of diamond plate. This advantage significantly reduces maintenance costs and any downtime when diamond plates need to be replaced due to wear or other reasons.
  • a detachable connection between a web below the diamond plate and a groove in the associated tool carrier allows the entire top of the diamond plate and the short side leg, which also cuts, to be cut without interruption through screw holes or screw heads or the like.
  • the web and the groove form a dovetail guide with a wedge shape for the purpose of releasable fastening of the diamond plate to the tool carrier. Because in this way you can easily, namely in particular with hammer blows, to be produced and unintentionally unreleasable connection between the diamond plate and the tool holder, and on the other hand, the web with the diamond plate can also be easily removed from the tool holder by appropriate hammer blows.
  • the main direction of loading when cutting is transverse to the direction of movement when attaching or detaching, so that the tight fit of the web in the groove is not touched by the cutting forces.
  • the ridge of the angular diamond plate is pushed into the groove practically from the cutting side, namely from the side on which the short leg of the diamond plate is located, which is provided for the side cut.
  • the cutting forces acting on the short leg reinforce the seat of the web in the groove; in no case do they act in a direction of movement of the web which could result in the web being released from the groove.
  • any cutting components only push the dovetail bar even more forcefully into the dovetail groove. Due to this design, the diamond plate is fastened over its entire width, in contrast to fastening by means of screws or the like. If the belt body of the cutting belt is worn out, the diamond plates can be recovered.
  • the groove-web connection with a wedge-shaped dovetail cross section can be produced easily and quickly and reliably, but is still easy to release.
  • the long leg of the angular diamond plate is fastened to the tapered upper side of the web and the short leg to the large or outer end face of the web.
  • the sides of the diamond plate facing the web thus form components or guide surfaces and stops of the dovetail guide.
  • the long leg of the diamond plate projects beyond the web at the free end and the tapered front side of the web, which is set back in the belt body, is delimited by the extension of the belt body, so that the free front side of the diamond plate is flush with the side surface of the belt body.
  • the dovetail guide consisting of a groove and web should be arranged above the strands passing through the tool carrier in bores. Especially with The bores distributed across the width of the tool carrier and the strands passing through these bores and the plastic molding compound ensure that each tool carrier is securely anchored in the cutting belt.
  • the dovetail guide for fastening the diamond plates then runs immediately and closely above the bores and strands, so that the belt and the tools attached to it are compact.
  • the short leg of the diamond plate should be flush with the tool carrier at the bottom so that the short leg can be inserted over the entire height of the belt in the area of the tool carrier.
  • top of the leg of the diamond plate should be flush with the top of the belt body, so that here too the entire width of the cutting belt of the diamond plate can be cut.
  • the angular diamond plates are driven alternately from the right and from the left onto the tool carrier. This alternating arrangement results in an even cut on both sides.
  • a stop is provided to limit the drive-in path of the web in the groove, so that the diamond plates are centered as precisely as possible on the cutting belt.
  • the legs of the diamond plate should be approximately the same width as the largest width of the groove, and they should protrude on both sides of the web in the width direction.
  • the tool carriers are expediently substantially wider than the diamond plates, for example approximately twice as wide.
  • a cutting belt generally designated 1, of which only a section is shown in FIGS. 1-3, essentially consists of a belt body 2 made of plastic and of a series of strands 3 of wire ropes lying at a distance from one another as reinforcement of the cutting belt 1, which have been embedded in the belt body 2 during injection molding.
  • the belt body 2 has transverse grooves 4 on its upper side and on its two side surfaces, which, as shown, are designed in the manner of fillets and are used for removing cooling water and scrapings.
  • a web 5 made of plastic for guiding and supporting the belt body 2 and the components integrated in the belt body is attached in a central position, for example glued on.
  • solid and compact tool holders 6, preferably made of steel, are embedded in the belt body 2 at intervals.
  • the tool carriers 6 are securely anchored in the belt body 2 by virtue of the fact that they have a row of bores 7 spaced apart from one another, in the present exemplary embodiment four bores 7, through which the strands 3 of the reinforcement of the cutting belt 1 extend.
  • the tool carriers 6 On their gable-shaped upper side and on each side surface, the tool carriers 6 each carry a diamond plate 8 with an L-shaped cross section with a long and also obtuse-angled leg 10 and a short leg 11, as shown in FIGS.
  • the width of the tool carrier 6 is, as the drawing shows, less than the belt width, on both sides, so that the alternating arrangement of the L-shaped diamond plates 8 results in a short leg 11 of the diamond plate 8 and an extension 12 of the belt body 2 opposite each other, but in an alternating arrangement from one side to the next tool carrier 6.
  • the tool carrier 6 - seen in the longitudinal direction of the belt - is longer on both sides than the associated diamond plate 8.
  • the tool in the form of the diamond plate 8 has a relatively wide support directly on the reinforcement in the form of the strands 3, without the flexibility of the cutting belt 1 perpendicular to the longitudinal direction is restricted.
  • the tool carriers 6 are first drawn onto the strands 3 of the reinforcement, as illustrated in FIG. Since the cutting belt 1 is endless, the strands 3 are firmly connected to one another, for example by a metal sleeve 9. Only then is the reinforcement with the tool carrier 6 introduced into the mold, where the belt body 2 is formed by plastic injection, the reinforcement from the strands 3 with the tool carriers 6 being embedded in the belt body 2 as described above and shown in the drawing .
  • a guide channel is shown below the cutting belt 1 only as one of various design options.
  • the web 5 engages in a guide channel 13 of a conventionally plate-shaped and not shown cutting arm, the guide channel 13 running on the peripheral edge of the cutting arm and being formed by essential components of the cutting arm, namely by spaced side plates 16, 17 with an intermediate one Bar 18, which also form a cooling water tank 19 in a known manner, which preferably extends through the entire interior of the cutting arm.
  • the cooling water enters the guide channel 13 and forms a lubricating film there on the surface 21 of the bar 18, so that the surface 21 becomes the sliding surface for the web 5 and thus for the cutting belt 1, whereby the underside of the web 5 slides on the surface 21.
  • the parts of the side walls 16, 17 projecting above the strip 18 (cf. FIG. 3) form the lateral guide for the web 5.
  • the free underside 22, located to the right and left of the web 5, of both the tool carrier 6 and the belt body 2 can either are in direct contact with the outer narrow sides of the side plates 16, 17 or can be arranged at an extremely short distance therefrom in order to support the guiding and supporting function of the web 5.
  • the game between the web 5 and the side plates 16, 17 is dimensioned such that the lubricated cooling water penetrate from the guide channel 13 to the outside and also between the free underside of the belt body 2 and the tool holder 6 on the one hand and the outer narrow sides of the side plates 16, 17 arrive and can also form a sliding film there.
  • the cutting belt 1 is designed in a similar manner to the previously described exemplary embodiment according to FIGS. 1-4.
  • the cutting belt 1 does not work as a whole shown cutting arm together with another guide, which has been developed on the basis of the guide and support of a cutting belt known from EP-A1-358112.
  • the web 5 of the cutting belt 1 is guided and supported here in the guide channel 13 on a flexible inner belt 23 provided with reinforcement by wire cables, which rotates on rolling elements 25 in the guide channel 13, the rolling elements 25 rolling on the surface 21 of the strip 18.
  • the flexible inner belt 23 has guide strips formed on both sides from blocks 24 arranged at a distance from one another, which hold the web 5 between them and form the lateral guide.
  • the cooling and rinsing water which emerges from the cooling water tank 19 via the bores 20 into the guide channel 13, passes through the gaps in the area of the rolling element 25 and the gaps between the inner belt 23 and the side plates 16, 17 and through the gaps or gaps between the underside of the belt body 2 or the tool carrier 6 and the tops of the outer narrow sides of the side walls 16, 17 to the outside into the cutting space, where the water for cooling the tools, that is to say, to dissipate the heat generated during the cut and to rinse out the small bits serves.
  • a further description of the tour is dispensed with and, to that extent, the aforementioned Reference referred to.
  • the top of the belt body 2 between the diamond plates 8 can have zigzag-shaped, in the longitudinal direction of the cutting belt, interlocking and juxtaposed grooves 14 which, like recesses 15 on the sides of the belt body 2 for the transport of the cutting small as well as for the water supply.
  • These voids and gaps which are free when the relevant belt body sections enter the cutting space in the rock, can absorb cutters and cooling water, so that the abutment of the cutting belt 1 on the cut surface of the rock is improved.
  • FIGS. 6b, 6c and 6d show a modified embodiment of the guidance and mounting of the cutting belt 1 from FIGS. 5, 6 and 6a.
  • the cutting belt 1 is dispensed with the web 5 with the web 5 directly on guide rollers 25a, which are rotatably mounted on pins 31 fastened in the walls of the guide channel 13 or in the side plates 16, 17 and provided with a bearing bore 30 for this purpose are.
  • These guide rollers 25a which are optionally made of steel or plastic, have a retracted central part 32 and correspondingly protruding side parts 33 for forming a guide region 34 for receiving and guiding the web 5.
  • Guide rollers 5a of this type are located on the cutting arm, not shown, on both longitudinal sides thereof, so that the belt 1 is supported and held over the entire length by the guide rollers 25a.
  • intermediate pieces At the transition to the drive and deflection wheels, not shown, of the cutting arm there are intermediate pieces, not shown, which hold the cutting belt 1 Support and guide accordingly when changing from the support and guidance by the guide rollers 24a to the drive wheel or deflection wheel.
  • the belt body 2 is shown in the further exemplary embodiment according to FIGS. 6b, 6c and 6d. This is because the attachment of the tool carriers and the diamond plates should essentially take place as shown in the exemplary embodiment according to FIGS. 5, 6 and 6a or in one of the other figures.
  • the further exemplary embodiment of a cutting belt 1 according to the invention shown in FIGS. 7-13 differs from the previously described exemplary embodiments primarily by a sandwich design of the tool carrier 6 and the associated diamond plate 8.
  • the reinforcement of the belt body 2 in the form of four strands 3 here This is because wire ropes extend in the parting plane between the tool carrier 6 and the diamond plate 8, as the drawing shows.
  • the bores 7 are formed as grooves 7a in the cross section which are semicircular in the tool carrier 6 or 7b in the diamond plate 8.
  • the alternating position of the short leg 11 of the diamond plate 8 on one tool carrier 6 on the right and on the next tool carrier 6 on the left results in a right-hand version shown in FIGS. 8a and 8b and a left-hand version in FIGS. 10a and 10b.
  • the tool carriers 6 and the associated L-shaped diamond plates 8 each form inseparable cutting elements.
  • the exemplary embodiment according to FIGS. 10c to 10h differs from the previously described exemplary embodiment primarily in that both Belt body 2 of the cutting belt 1 as well as the diamond plates 8 are gable-shaped on their upper side for better guidance in the cutting space, as already indicated in the first part of the description.
  • the second essential difference is that the strands 3 of the wire ropes are not fastened in a sandwich design between the tool carrier 6 and the diamond plate 8, but rather each extend through holes 7 in the tool carrier 6, for which the strands 3 are pulled through the channels 7 , so that the tool carriers 6 are wound like beads on cords.
  • this embodiment corresponds essentially to the first embodiment of the cutting belt 1 explained in connection with FIGS. 1-4.
  • FIGS. 10e and 10h show that the same diamond plates 8 are fastened to the tool carriers 6 once as a right-hand version and once as a left-hand version, for which the diamond plates 8 can only be rotated alternately.
  • FIGS. 7-12 can be understood from the preceding description of the other exemplary embodiments in conjunction with the drawing, so that a further description is not required. Only in FIG. 13 is a separate reference made to the extent that a tool carrier 6 with a diamond plate 8 is shown, which is formed at an angle to the longitudinal axis of the cutting belt in an oblique position in the belt body 2 and is intended for a free cut.
  • FIG. 14 A particularly advantageous attachment of the angular diamond plates 8 to the cutting belt 1 can be seen in FIG. 14, and FIGS. 15 to 23 serve, as will be explained in detail below, for illustration an easy-to-produce and easily detachable fastening of the angular diamond plates 8 by means of a suitably designed tool carrier 6, which in turn is firmly and securely anchored in the cutting belt 1:
  • the tool carrier 6 is, as in FIG. 10c, 10e, 10d, 10h, 10g etc., supported on strands of sieves made of wire ropes which extend through bores 7 distributed in a row over the width of the tool carrier 6, and the rest ensures the pouring of the Tool carrier 6 in the belt body 2, as already explained with reference to the previous exemplary embodiments, for secure embedding and anchoring of the tool carrier 6 in the cutting belt 1.
  • the web 41 carries on its upper side 43 the long leg 10 and on its larger end face 44 the short leg 11 of the diamond plate 8, which is so angularly formed overall.
  • the legs 10, 11 are each fastened to the web 41 by means of a soldered connection and protrude beyond the free ends in such a way that the free end face 45 and the Inserts surface 45 of the small leg 11 flush into the course of the upper side and the side wall of the belt body 2, as can be seen in particular from FIGS. 21, 22, 23 in connection with FIG. 14.
  • the length of the tool carrier 6 and corresponding to the web 41 is shorter than the width of the cutting belt 1, since on one side of the tool carrier 6 the extension 12 of the belt body 2 and on the other opposite side of the tool carrier 6 the short leg 11 of the diamond plate 8 extends the corresponding belt body sides.
  • Figure 14 shows that to equip the cutting belt 1 with angular diamond plates 8 these are inserted alternately from the right and left (see arrows 46, 47) on and into the cutting belt 1, their wedge-shaped webs 41 each engaging in the corresponding wedge-shaped grooves 40 , with which they form a dovetail guide and achieve a tight fit there, for example by light hammer blows.
  • the dovetail attachment can be released again just as easily if the diamond plates 8 are to be removed from the cutting belt 1, for example for replacement because of wear.
  • an easily releasable attachment of the diamond plates 8 to the cutting belt 1 can always be achieved easily, quickly and reliably.
  • strands 3 in the present case six in number, can consist of a corresponding number of loops or turns of a single rope loop running multiple times through the cutting belt 1 with a single connection point, or else how shown, with separate attachment of the two rope ends, exist.
  • the two ends of the rope strand are each fastened to the neighboring rope with a clamp K or fixed in another manner in a tensile manner.

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  • Mining & Mineral Resources (AREA)
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Claims (14)

  1. Bras haveur pour machines à haver pour découper de la pierre dure comme du marbre ou équivalent,
    - qui est configuré en forme de plaque et
    - sur le bord périphérique duquel circule, sur un canal de guidage (13) ouvert vers l'extérieur, une courroie de coupe (1) flexible, sans fin, garnie à l'extérieur de plaques de diamant (8) comme outils de coupe,
    - la courroie de coupe (1) avec une traverse (5) qui fait saillie de son côté intérieur étant en prise avec le canal de guidage (13) et
    - étant entraînée de manière clabotée et par friction par une roue d'entraînement située à une extrémité du bras haveur et étant tournée dans l'autre direction par une roue de renvoi située à l'autre extrémité du bras haveur et
    - étant constituée par un corps de ceinture (2) en matière plastique ou équivalent, flexible, renforcé avec plusieurs boyaux (3), par exemple en câbles en fils,
    - dans lequel les plaques de diamant (8) sont moulées à intervalles, caractérisé en ce que les plaques de diamant (8) sont fixées sur des supports d'outils (6) massifs qui présentent des ouvertures traversantes comme des forures (7) placées en une rangée l'une à côté de l'autre ou des trous oblongs (7') ou seulement un seul trou oblong et qui sont moulées avec les plaques de diamant (8) ensemble dans le corps de ceinture (2) et que les boyaux (3) traversent directement les supports d'outils (6) en s'étendant à travers les ouvertures comme des forures (7) ou des trous oblongs (7').
  2. Bras haveur selon la revendication 1, caractérisé en ce que les boyaux (3) sont constitués par les boucles ou les enroulements d'un seul boyau de câbles plusieurs fois en forme de boucle en traversant la courroie de coupe (1) avec un seul endroit de liaison ou avec une fixation séparée des deux extrémités de boyau de câbles.
  3. Bras haveur selon l'une ou plusieurs des revendications 1-2, caractérisé en ce que les supports d'outils (6) se terminent dans le sens transversal de la courroie de coupe (1) respectivement à un certain écart devant les faces latérales du corps de ceinture (2), les plaques de diamant (8) sont configurées avec une section en forme de L avec un montant court et un montant long (11) et/ou (10) et les montants courts (11) des plaques de diamant (8), perpendiculaires au sens longitudinal de la courroie de coupe, changeant respectivement d'un côté à l'autre, reposent à l'intérieur latéralement sur le support d'outils (6) et se terminent à l'extérieur bord à bord avec la face latérale respective du corps de ceinture (2).
  4. Bras haveur selon l'une ou plusieurs des revendications 1-3, caractérisé en ce que les faces supérieures du corps de ceinture (2) et des plaques de diamant (8) sont en section respectivement en forme de pignon sous un angle obtus et se suivent bord à bord et les supports d'outils (6) sont configurés en forme de pignon de manière correspondante.
  5. Bras haveur selon l'une ou plusieurs des revendications 1 à 4, caractérisé en ce que les sections de corps de ceinture entre les plaques de diamant (8) présentent au-dessus de la face supérieure de la courroie de coupe (1) des rainures (4) ou des enfoncements ou équivalent, en particulier transversalement par rapport au sens longitudinal de la courroie de coupe.
  6. Bras haveur selon l'une ou plusieurs des revendications 1-5, caractérisé en ce que la face supérieure des sections de corps de ceinture entre les plaques de diamant (8) présente des rainures et/ou évidements latéraux (15) en forme de zigzag, qui sont orientés dans le sens longitudinal de la courroie de coupe, qui s'engrènent l'une dans l'autre et qui sont situées l'une à côté de l'autre.
  7. Bras haveur selon l'une ou plusieurs des revendications 1-6, caractérisé en ce que le canal de guidage (13) est constitué par deux parois latérales (16, 17) entre lesquelles est placée une baguette (18) placée en arrière, les parois latérales (16, 17) forment à l'intérieur avec la baguette (18) un conteneur (19) pour l'eau pour refroidir les outils et comme eau de pression pour constituer un fil glissant et la baguette (18) présente à intervalles des forures (20) pour amener l'eau de refroidissement au canal de guidage (13).
  8. Bras haveur selon la revendication 7, caractérisé en ce que la traverse (5) de la courroie de coupe (1) qui s'engrène dans le canal de guidage (13) glisse en fonctionnement sur la surface (21) de la baguette (18) qui est recouverte d'un film d'eau de refroidissement et de lubrifiant et les faces inférieures libres (22) du corps de ceinture (2) et le support d'outils (6) glissent et sont guidées sur les petits côtés extérieurs des parois latérales (16, 17).
  9. Bras haveur selon l'une ou plusieurs des revendications 1-8, caractérisé en ce que la traverse (5) de la courroie de coupe (1) repose sur une courroie intérieure (23) flexible sans fin qui circule sur des corps roulants (25) qui roulent sur la surface supérieure (21) de la baguette (18) dans le canal de guidage (13) (comparer figures 5 et 6).
  10. Bras haveur selon la revendication 9, caractérisé en ce que la courroie intérieure flexible (23) présente deux baguettes de guidage en blocs (24), placées à un certain écart, qui logent entre elles la traverse (5) de la courroie de coupe (1).
  11. Bras haveur selon l'une ou plusieurs des revendications 1-8, caractérisé en ce que la courroie de coupe (1) est positionnée sur des galets de guidage (25a), de section en forme de double T, positionnés rotatifs dans le canal de guidage (13), et la traverse (5) du corps de ceinture (2) est logée dans la zone de guidage (34) des galets de guidage (25).
  12. Bras haveur selon l'une ou plusieurs des revendications 1-11, caractérisé en ce que chaque plaque de diamant (8) est fixée sur une traverse (41) qui est fixée de manière amovible dans une rainure (40) du support d'outils (6) correspondant qui est formée de manière correspondante et qui est tranversale par rapport au sens longitudinal de la courroie de coupe (1).
  13. Bras haveur selon la revendication 12, caractérisé en ce que la traverse (41) et la rainure (40) forment un guidage en queue d'aronde avec une forme en coin pour la fixation amovible de la plaque de diamant (8) sur le support d'outils (6).
  14. Bras haveur selon l'une ou plusieurs des revendications 12 et 13, caractérisé en ce que les plaques de diamant (8) en forme d'angle sont embouties en alternance de droite et de gauche sur les supports d'outils (6).
EP92111939A 1991-07-16 1992-07-14 Bras haveur pour machines à haver de matériau en pierre dure Expired - Lifetime EP0527344B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE9108726U 1991-07-16
DE9108726 1991-07-16
DE9110796U 1991-08-31
DE9110796U DE9110796U1 (de) 1991-07-16 1991-08-31 Schrämarm für Schrämmaschinen zum Schneiden von Hartgestein

Publications (3)

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EP0527344A2 EP0527344A2 (fr) 1993-02-17
EP0527344A3 EP0527344A3 (fr) 1993-04-14
EP0527344B1 true EP0527344B1 (fr) 1997-03-05

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EP92111939A Expired - Lifetime EP0527344B1 (fr) 1991-07-16 1992-07-14 Bras haveur pour machines à haver de matériau en pierre dure

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EP (1) EP0527344B1 (fr)
DE (2) DE9110796U1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10042858A1 (de) * 2000-08-30 2002-03-21 Dieter Gerlach Anordnung zum Sägen von Platten aus steinartigen Baustoffen

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US5791330A (en) * 1991-06-10 1998-08-11 Ultimate Abrasive Systems, L.L.C. Abrasive cutting tool
BR9405838A (pt) * 1993-03-01 1996-01-16 Ultimate Abrasive Syst Inc Ferramenta cortante abrasiva
US6482244B2 (en) 1995-06-07 2002-11-19 Ultimate Abrasive Systems, L.L.C. Process for making an abrasive sintered product
US6478831B2 (en) 1995-06-07 2002-11-12 Ultimate Abrasive Systems, L.L.C. Abrasive surface and article and methods for making them
IT1282487B1 (it) * 1995-11-08 1998-03-23 Benetti Meyers International S Cinghietta diamantata per il taglio di pietre.
SE513484C2 (sv) 1998-01-21 2000-09-18 Hagby Asahi Ab Sågrem och betongsåg
ITLU20120017A1 (it) * 2012-12-06 2014-06-07 Giorgio Dinelli Utensile diamantato da utilizzare in macchine per il taglio di materiali lapidei

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DE1088408B (de) * 1955-12-27 1960-09-01 Wallram Hartmetall Werkzeug zur Steinbearbeitung
US3459169A (en) * 1966-08-12 1969-08-05 Northern Lumber Co Inc Chain saw for cutting very hard materials and having plunge cutting means
US3598101A (en) * 1968-10-01 1971-08-10 Carborundum Co Wire saw
DE1933230A1 (de) * 1969-07-01 1971-01-21 Theresia Tullius Hochflexibles Band einer Steinsaegemaschine mit aufgeloeteten aufgeschweissten oder durch Fliesspressen befestigten,ein- oder beiderseitig in Hauptbewegungsrichtung messerartig zugespitzten,mit Hartstoffen,z.B. Diamant durchsetzten Scnneidkoerpern
US3692073A (en) * 1970-09-15 1972-09-19 Carl W Easterwood Drag saw
SU856780A1 (ru) * 1977-06-14 1981-08-25 Ордена Трудового Красного Знамени Институт Сверхтвердых Материалов Ан Украинской Сср Бесконечна алмазно-абразивна пила
BE865189A (fr) * 1978-03-22 1978-07-17 Madrigali Luigi Dispositif de havage de roche
EP0014776B1 (fr) * 1979-02-22 1982-01-20 Honoré Joseph Lambot Bras haveur
DE3128264A1 (de) * 1981-07-17 1983-02-03 Maschinenfabrik Korfmann Gmbh, 5810 Witten Schraemarm an einer schraemmaschine
DE3209391A1 (de) * 1982-03-15 1983-09-22 Maschinenfabrik Korfmann Gmbh, 5810 Witten Schneidewerkzeug fuer eine schraemkette oder einen schraemriemen
US4603678A (en) * 1984-10-05 1986-08-05 W. F. Meyers Company, Inc. Belt-configured saw for cutting slots into stone
US4679541A (en) * 1984-10-05 1987-07-14 W. F. Meyers Company, Inc. Belt-configured saw for cutting slots into stone
BE1000418A4 (fr) * 1987-03-23 1988-12-06 Diamant Boart Sa Bras haveur.
US4945889A (en) * 1987-12-11 1990-08-07 W. F. Myers Company, Inc. Belt-configured saw for cutting slots into stones having a poly-crystalline diamond cutting surface
DE3830047C1 (fr) * 1988-09-03 1990-04-26 Maschinenfabrik Korfmann Gmbh, 5810 Witten, De

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10042858A1 (de) * 2000-08-30 2002-03-21 Dieter Gerlach Anordnung zum Sägen von Platten aus steinartigen Baustoffen
DE10042858B4 (de) * 2000-08-30 2005-04-28 Dieter Gerlach Anordnung zum Sägen von Platten aus steinartigen Baustoffen

Also Published As

Publication number Publication date
DE9110796U1 (de) 1991-11-14
EP0527344A3 (fr) 1993-04-14
EP0527344A2 (fr) 1993-02-17
DE59208093D1 (de) 1997-04-10

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