EP2820243B1 - Chisel holder - Google Patents

Chisel holder Download PDF

Info

Publication number
EP2820243B1
EP2820243B1 EP13701109.4A EP13701109A EP2820243B1 EP 2820243 B1 EP2820243 B1 EP 2820243B1 EP 13701109 A EP13701109 A EP 13701109A EP 2820243 B1 EP2820243 B1 EP 2820243B1
Authority
EP
European Patent Office
Prior art keywords
hard material
chisel holder
chisel
material element
tool
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.)
Active
Application number
EP13701109.4A
Other languages
German (de)
French (fr)
Other versions
EP2820243A2 (en
Inventor
Thomas Lehnert
Karsten Buhr
Cyrus Barimani
Günter HÄHN
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.)
Wirtgen GmbH
Original Assignee
Wirtgen 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 Wirtgen GmbH filed Critical Wirtgen GmbH
Publication of EP2820243A2 publication Critical patent/EP2820243A2/en
Application granted granted Critical
Publication of EP2820243B1 publication Critical patent/EP2820243B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21C—MINING OR QUARRYING
    • E21C35/00—Details of, or accessories for, machines for slitting or completely freeing the mineral from the seam, not provided for in groups E21C25/00 - E21C33/00, E21C37/00 or E21C39/00
    • E21C35/18—Mining picks; Holders therefor
    • 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
    • B28D1/18—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by milling, e.g. channelling by means of milling tools
    • B28D1/186—Tools therefor, e.g. having exchangeable cutter bits
    • 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
    • E21—EARTH DRILLING; MINING
    • E21C—MINING OR QUARRYING
    • E21C25/00—Cutting machines, i.e. for making slits approximately parallel or perpendicular to the seam
    • E21C25/06—Machines slitting solely by one or more cutting rods or cutting drums which rotate, move through the seam, and may or may not reciprocate
    • E21C25/10—Rods; Drums
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21C—MINING OR QUARRYING
    • E21C35/00—Details of, or accessories for, machines for slitting or completely freeing the mineral from the seam, not provided for in groups E21C25/00 - E21C33/00, E21C37/00 or E21C39/00
    • E21C35/18—Mining picks; Holders therefor
    • E21C35/183—Mining picks; Holders therefor with inserts or layers of wear-resisting material
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21C—MINING OR QUARRYING
    • E21C35/00—Details of, or accessories for, machines for slitting or completely freeing the mineral from the seam, not provided for in groups E21C25/00 - E21C33/00, E21C37/00 or E21C39/00
    • E21C35/18—Mining picks; Holders therefor
    • E21C35/183—Mining picks; Holders therefor with inserts or layers of wear-resisting material
    • E21C35/1831—Fixing methods or devices
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21C—MINING OR QUARRYING
    • E21C35/00—Details of, or accessories for, machines for slitting or completely freeing the mineral from the seam, not provided for in groups E21C25/00 - E21C33/00, E21C37/00 or E21C39/00
    • E21C35/18—Mining picks; Holders therefor
    • E21C35/183—Mining picks; Holders therefor with inserts or layers of wear-resisting material
    • E21C35/1833—Multiple inserts

Definitions

  • the invention relates to a chisel holder for a soil working machine, in particular a surface miner, a road milling machine or the like, with a holding attachment which has a chisel holder and/or carries a cutting element.
  • the invention also relates to a carrier for a chisel holder and a mining machine or similar soil working machine.
  • a chisel holder changing system with a base part and a chisel holder is known.
  • the base part has a support foot with which it can be welded onto the outer circumference of a milling drum.
  • a plug-in receptacle is incorporated into the base part.
  • a chisel holder with its plug-in attachment can be mounted in this.
  • a pressure screw is used, which pulls the plug-in attachment into the plug-in receptacle and clamps it therein.
  • the chisel holder has a bore as a chisel holder.
  • a chisel, in particular a point-shank chisel can be installed in this in an exchangeable manner.
  • the milling machine unexpectedly hits a hard layer of rock, sometimes breaking a chisel.
  • the chisel holder is then exposed to the attack of wear without protection and after a short period of time it is unsuitable for receiving a replacement chisel.
  • the chisel holder then has to be replaced, which is expensive.
  • the base part is worn out, this must also be separated from the milling drum tube and replaced, in which case the costs and time involved are disproportionately higher.
  • the wear protection element with its hard material element takes over the emergency running property and prevents severe damage to the chisel holder from the abrasive attack. This means that the chisel holder remains functional and the machine operator can quickly replace the defective chisel without the need for lengthy machine downtimes to replace the chisel holder or even the base part.
  • the hard material element terminates with the radially outer body region of the holding lug having the chisel receptacle or protrudes radially over it or that the hard material element is arranged set back in the radial direction in relation to the cutting element.
  • the bit holders are usually arranged on a milling drum tube and therefore run in a circle.
  • the chisel or the cutting element cuts into the material to be removed and the hard material element of the wear protection element runs along passively without cutting intervention. Only when the chisel or the cutting element has reached its state of wear or a tool breakage occurs does the hard material element come into active engagement with the subsoil to be removed as intended.
  • the hard material element has a cutting edge
  • material removal can also take place with the wear protection element during the emergency intervention and the penetration resistance of the wear protection element is also reduced. This prevents excessive stress on the bit holder.
  • an effective cutting edge geometry results if it is provided that the cutting edge is arranged between a front side pointing in the tool feed direction and a cover side, and that in particular the enclosed Angle between the front side and the top side is chosen to form the cutting edge between 60 ° and 130 °.
  • An angular range between 90° and 120° is particularly preferred, since a good compromise has been found here for a cutting edge geometry that is sufficiently stable and easy to cut.
  • the central longitudinal axis of the chisel holder and the front side pointing in the tool feed direction enclose an angle ⁇ in the angular range between 40° and 130°, particularly preferably an angle in the angular range between 60° and 110°. This achieves an adjustment of the front side that can also reliably dissipate load peaks that occur in a pulsed manner in order to maintain the emergency operation function.
  • the use of several hard material elements instead of one large, continuous hard material element reduces the risk of the hard material element breaking.
  • the gap-free juxtaposition prevents the gaps between the individual hard material elements from being washed out, so that the attachment of the hard material elements is reliably maintained.
  • Stable fixing of the hard material elements is easily achieved if it is provided that the hard material element is fastened in a receptacle of the chisel holder or in a carrier that can be connected or is connected to the chisel holder and is supported in a form-fitting manner on a support surface counter to the tool feed direction, and/or that the hard material element is in the tool feed direction is positively supported on a paragraph.
  • the hard material elements can be fixed by means of a soldered connection or the like. This connection is relieved by the rear support and/or the front shoulder.
  • Hard metal, ceramic material or another material with the same functional effect can be used as the hard material for the hard material element.
  • An alternative of the invention can be such that a carrier, which accommodates the hard material element, is exchangeably connected, in particular welded, to the chisel holder.
  • a carrier which accommodates the hard material element
  • This further simplifies the variability of the tool system.
  • existing chisel holders can be retrofitted with such a carrier. If, in the event of damage, a broken chisel, for example, is not detected in good time, the wear protection element wears out. The complete tool holder with the carrier is then replaced and a new tool holder that is not worn is used, so that the machine downtimes are kept to a minimum. The carrier can then be separated from the bit holder and a new, unworn carrier reconnected to the same bit holder to obtain a fully operational bit holder.
  • a particularly rigid geometry which can also absorb strong impact loads, results from the fact that the carrier has a base part that accommodates the hard material element and that one or two support parts are connected to the base part in the opposite direction to the tool feed direction.
  • large connecting surfaces can be created with the support parts, or alternatively, the connection geometries with the support parts can be designed in such a way that high moments can be transmitted.
  • a conceivable variant of the invention is such that the carrier has a concave indentation in the connection area to the chisel holder, which has a top surface for connection to a corresponding, in particular convex, lateral surface of the chisel holder.
  • these pairings of surfaces can be used to quickly and easily assign the carrier to the chisel holder in the correct position.
  • the troughed design of the carrier makes it possible to create a form-fitting connection in the transverse direction of the trough.
  • the carrier is provided with a chamfer on its edge regions, at least in regions, that serves as preparation for the weld seam.
  • the subject matter of the invention is also a carrier for a chisel holder with a wear protection element having a hard material element, the carrier having a mounting surface via which it can be connected to the chisel holder in an exchangeable manner.
  • the subject matter of the invention is also a soil cultivating machine, in particular a mining machine or the like, which is equipped with a plurality of chisel holders according to one of claims 1 to 12.
  • a soil cultivating machine it can be provided in particular that the radially outer limit of the hard material element is arranged on a first pitch circle with a first radius and the radially outer limit of the cutting element is arranged on a third pitch circle with a third radius, and that the first radius of the first Pitch circle is smaller than the third radius of the third pitch circle.
  • FIG. 1 shows a base part 10, which has an underside 11 with concave top surfaces. By means of these top surfaces, the base part can be placed on the cylindrical outer shell of a milling drum and firmly welded to it.
  • a chisel holder 20 is connected to the base part 10 .
  • the base part 10 has a plug-in receptacle 15 which receives a plug-in lug 21 of the chisel holder 20 .
  • the design of the bit holder 20 is explained in more detail.
  • the chisel holder 20 has the plug-in lug 21 to which a holding lug 25 is connected at an angle.
  • an obtuse angle is ideally enclosed between the plug-in attachment 21 and the holding attachment 25 .
  • the plug-in attachment 21 forms a front surface 21.1 in the area of its plug-in attachment front side 22 facing in the tool feed direction (V).
  • V tool feed direction
  • two recesses are deepened in such a way that they form pressure surfaces 21.2.
  • the pressure surfaces 21.2 are arranged at an angle to the longitudinal axis of the plug-in extension 21.
  • the projection of the plug-in attachment 21 carrying the pressure surface 21.2 merges into side surfaces 21.4 via lateral transition sections 21.3.
  • the side faces 21.4 are aligned in the direction of the tool feed direction (V) and point to the tool sides. As the 7 can be seen, go over the side surfaces 21.4 in the area of the plug-in projections 23 in bearing surfaces 21.5.
  • the bearing surfaces 21.5 are at an angle to each other.
  • the bearing surfaces 21.5 are in turn connected by means of a transition surface 21.6 and point in the opposite direction to the tool feed direction V.
  • the holding lug 25 is provided with a chisel receptacle 26 in the form of a cylindrical bore.
  • the central longitudinal axis M of the chisel receptacle 26 and the longitudinal axis L of the plug-in attachment 21 ideally enclose an angle in the range between 100° and 160°, preferably 130°.
  • the chisel holder 26 merges into a support surface 25.3 via an insertion extension 27.
  • the bearing surface 25.3 runs radially to the chisel receptacle 26. Away from the chisel receptacle 26, the bearing surface 25.3 merges into a cross-sectional narrowing 25.1.
  • the narrowing of the cross section 25.1 is designed in the form of a truncated cone and transfers an outer surface 25.2 of the chisel holder into the bearing surface 25.3.
  • the retaining attachment 25 has two support surfaces 29 which are set at an angle to one another in a V-shape. In doing so, how the 8 can be seen, the support surfaces 29 due to their inclined position in the direction of the free end of the plug-in attachment and at the same time in the tool feed direction (V) and run, as in 3 shown parallel or substantially parallel to the central longitudinal axis (M) of the bit socket 26.
  • the holding lug 25 has lateral widenings 28 in which the support surfaces 29 expire.
  • the support surfaces 29 and the bearing surfaces 21.5 are oriented in opposite directions.
  • the wear protection element has a carrier 30 which is made from a steel material.
  • the carrier 30 has a base part 35 in which a receptacle 31 is incorporated in the form of a cutout.
  • the receptacle 31 is delimited by a rear support surface 32 and a shoulder 34 on the front.
  • a top surface of the receptacle 31 extends between the rear support surface 32 and the shoulder 34 .
  • Three hard material elements 40 are soldered into the receptacle 31 .
  • the hard material elements 40 are designed as plate-shaped components, which are placed with their underside 44 on the top surface of the receptacle 31 . At the rear, the hard material elements 40 are supported with a rear side 45 opposite the support surface 32 . On the front they are at that Paragraph 34 supported.
  • the hard material elements 40 are lined up in a row in the receptacle 31 without a gap and are fixed in the receptacle 31 by means of an integral connection, for example a soldered connection or an adhesive connection.
  • the hard material elements 40 have a top side 41, which is adjoined by a front side 42 in the angular range ⁇ between 60° and 150° (see FIG 8 ).
  • the front side 42 encloses an angle ⁇ in the angular range between 40° and 130° with the central longitudinal axis M of the chisel holder 26 (see Fig 8 ).
  • a cutting edge 46 is formed in the transition area between the front side 42 and the cover side 41 .
  • the cutting edges 46 of the individual hard material elements 40 are aligned with one another, such as 3 reveals.
  • a phase 43 is attached in the connection area of the cover side 41 to the rear side 45 in order to reduce the risk of breakage for the hard material element 40 .
  • the hard material element 40 consists of hard metal, a ceramic material or an equivalent hard material.
  • the front shoulder 34 is formed by a projection 33 which covers the transition area between the hard material element 40 and the attachment surface of the receptacle 31 towards the front side.
  • Two leg-shaped support parts 36 are connected to the base part 35 opposite to the tool feed direction V.
  • FIG. The allocation to the base part 35 is made in such a way that continuous side surfaces 39 running in the direction of the tool feed direction V result.
  • the support parts 36 are limited towards the top with an inclined inclined surface 36.1.
  • the carrier 30 is provided with a concave depression, like this 4 reveals.
  • the trough forms a top surface 37.1, which is surrounded all around by phases that serve as weld seam preparations 38.1 to 38.4.
  • the carrier 30 With the attachment surface 37.1, the carrier 30 can be placed on a convex lateral surface 25.2 of the holding attachment 25, like this Figures 1 and 2 show.
  • a weld seam is made in the area of the weld seam preparations 38.1 to 38.4.
  • the cutting edges 46 are arranged transversely to the tool feed direction V.
  • the cutters 46 also project radially beyond the front receiving portion of the bit receptacle 26, as shown 6 reveals. Accordingly, the cutting edge 46 projects radially beyond the outer boundary of the chisel holder 20, which in the present case is formed by the cross-sectional reduction 25.1 ( 8 ).
  • the base part 10 has a plug-in receptacle 15 whose cross section is adapted to the outer contour of the plug-in shoulder 21 of the chisel holder 20 .
  • the plug-in receptacle 15 is delimited by means of a support attachment 12 .
  • a screw 13 is incorporated as a thread.
  • the screw receptacle 13 opens into the plug-in receptacle 15. Turning away from the plug-in receptacle 15, the screw receptacle 13 ends in a bore enlargement 13.1.
  • the support extension 12 has a bearing 18 which is formed by two support surfaces 18.1.
  • the two support surfaces 18.1 are set at an angle to one another. The angular alignment of the support surfaces 18.1 is adapted to the alignment of the support surfaces 29 of the chisel holder 20, so that the support surfaces 29 of the chisel holder 20 can rest plane-parallel on the support surfaces 18.1 of the base part 10.
  • the support surfaces 18.1 are connected to one another via a set-back shoulder 18.4 for the purpose of the defined contact of the chisel holder 20.
  • the plug-in receptacle 15 is delimited by a counter bearing 16 .
  • the counter bearing 16 is part of a rear extension 17 which protrudes over the plug-in receptacle 15 counter to the tool feed direction (V).
  • the Counter bearing 16 is formed by two further support surfaces 16.1, which are at an angle to one another. These further support surfaces 16.1 are again adapted in their configuration and spatial arrangement to the bearing surfaces 21.5 of the chisel holder 20, so that a plane-parallel contact of the further bearing surfaces 21.5 on the support surfaces 16.1 is possible.
  • the plug-in receptacle 15 Opposite the support surfaces 18.1, the plug-in receptacle 15 is delimited by an open area 18.2.
  • the plug-in receptacle 15 is delimited by two lateral connecting sections 19 in the tool feed direction (V).
  • the inner surfaces formed by the connecting sections 19 and facing the plug-in receptacle 15 transition via free surfaces 18.5 into walls 18.6, which in turn are oriented in the tool feed direction (V).
  • the walls 18.6 in turn run out in the free space 18.2.
  • a recess 17.1 is deepened in the approach 17.
  • the chisel holder 20 is assembled on the base part 10 as follows.
  • the chisel holder 20 is pushed with its socket 21 into the socket 15 of the base part 10 .
  • a threaded pin is then screwed into the screw mount 13 as the fastening element 14 .
  • the fastening element 14 has a pressure surface which is oriented at right angles to the screw axis and which comes to rest on the pressure surface 21.2 of the chisel holder 20.
  • the pressing surface does not have to be a flat surface, but can also be a spherical surface.
  • the 1 shows that two fastening elements 14 are used to fasten the chisel holder 20, and therefore two screw receptacles 13 are also incorporated into the base part 10.
  • the fastening element 14 presses on the pressure surface 21.2. Due to the angular position of the pressure surface 21.2 to the central longitudinal axis L of the plug-in attachment 21, the fastening element 14 exerts a pull-in force on the plug-in attachment 21. At the same time, a force component is generated which runs in the opposite direction to the tool feed direction (V) and presses the plug-in attachment 21 into the counter bearing 16 . The force component running in the direction of the longitudinal axis L of the plug-in attachment 21 brings the supporting surfaces 18.1 of the bearing 18 with the support surfaces 29 of the chisel holder 20 to the plant.
  • a tension of the fasteners 14 causes now, as in particular from the figure 5 it can be clearly seen that the chisel holder 20 is supported on both sides of the central longitudinal axis L of the plug-in attachment 21 .
  • the support is provided on the counter bearing 16 on the rear of the central longitudinal axis at the end of the chisel holder 20 on the plug-in attachment end and on the other hand on the support 18 in front of the central longitudinal axis on the end of the chisel holder on the attachment attachment side. Consequently, the support surfaces 29 and the bearing surfaces 21.5 on the chisel holder 20 are diametrically opposite.
  • the fastening screw 14 now acts on the plug-in shoulder 21 in such a way that the chisel holder 20 is braced on the support 18 and the counter bearing 16 . In this way, a secure and captive attachment of the chisel holder 20 is guaranteed.
  • figure 5 also shows that a cover element 14.1 can be inserted into the widened bore hole 13.1 of the screw receptacle 13, which cover element covers the tool receptacle of the fastening element 14.
  • Both the base part 10 and the chisel holder 20 are designed to be essentially mirror-symmetrical to the central transverse plane of these respective components running in the tool feed direction (V). This promotes even load transfer.
  • the support consisting of the bearing 18 and the support surfaces 29, is primarily claimed.
  • the bit holder 20 is also pressed into the counter bearing 16 as a result of the tool feed (V).
  • V tool feed
  • the shoulder 18.4 forms an adjustment space.
  • the spacing of the chisel holder 20 from paragraph 18.4 guarantees that the chisel holder 20 can be repositioned in the event of wear.
  • a wear compensation can take place in particular because the support surfaces 18.1 and the other support surfaces 16.1 form sliding guides along which the chisel holder 20 can slide during retensioning.
  • This configuration is particularly advantageous when the base part 10, as is usually required, has a service life that lasts for several life cycles of chisel holders 20. Unworn chisel holders 20 can then always be securely braced and held on a partially worn base part 10 .
  • the built-in point-shank pick removes excavated material, which slides off the pick holder 20 in the area of the lateral surface 25.2. This excavated material is guided outwards via the widenings 28, as a result of which the base part 10 is protected against the abrasive attack of this excavated material.
  • the base part 10 is placed with its concave underside 11 on the convex outside of a milling drum tube and welded there.
  • a shank chisel namely a point-shank chisel 50, is inserted in a known manner into the chisel receptacle 26 of the chisel holder 20.
  • the point-shank chisel 50 has a chisel tip 51 made of hard material, which is attached to a chisel head 52 .
  • the chisel head 52 is followed by a chisel shank, which is held in the chisel receptacle 26 by means of a clamping sleeve (not shown in the figures).
  • a clamping sleeve By means of the clamping sleeve, round-shank chisel 50 can be held captive in chisel receptacle 26 in the axial direction, but can be held freely rotatably about its central longitudinal axis M.
  • the chisel head 52 is supported with the interposition of a wear protection disk 53 from the contact surface 25.3. 11 shows the pick 50 in the unworn state. During operation, the tool combination shown rotates around the central longitudinal axis of the milling drum tube.
  • the cutting insert rotates with its radially outer dimensional limit on a pitch circle T 3 with a third diameter.
  • the radially outer limit of the blades 46 rotates on a pitch circle T 2 with a second radius.
  • the in the 11 and 12 The pitch circle T 1 shown with a first radius represents the maximum permissible state of wear of the hard material elements 40.
  • the cutting edges 46 are arranged set back in the radial direction relative to the pitch circle T 3 , so that the second radius of the pitch circle T 2 is smaller than the third radius of the pitch circle T 3 .
  • FIG. 12 shows the maximum permissible state of wear of the cutting element 51 or the pick 50.
  • the radially outer boundary of the cutting element 51 now lies on the pitch circle T 2 , so that the cutting elements 46 now also come into engagement with the material to be removed.
  • the hard material elements 40 thus form an emergency running property that prevents the front receiving area of the bit holder (Annex 25.3) from wearing out or being damaged.
  • the recesses 17.1 in the base part 10 together with the recess 24 in the chisel holder 20 form a tool holder.
  • An ejection tool can be inserted into this, which acts on the back of the pick and pushes it out of the pick receptacle 26 and also pulls in a new pick.
  • the chisel holder 26 is spatially connected to the recess 24.

Description

Die Erfindung betrifft einen Meißelhalter für eine Bodenbearbeitungsmaschine, insbesondere einen Surface Miner, eine Straßenfräsmaschine oder dergleichen, mit einem Halteansatz, der eine Meißelaufnahme aufweist und/oder ein Schneidelement trägt.The invention relates to a chisel holder for a soil working machine, in particular a surface miner, a road milling machine or the like, with a holding attachment which has a chisel holder and/or carries a cutting element.

Die Erfindung betrifft weiterhin einen Träger für einen Meißelhalter sowie eine Bergbaumaschine oder dergleichen Bodenbearbeitungsmaschine.The invention also relates to a carrier for a chisel holder and a mining machine or similar soil working machine.

Aus der DE 43 224 01 A1 ist ein Meißelhalterwechselsystem mit einem Basisteil und einem Meißelhalter bekannt. Das Basisteil weist einen Stützfuß auf, mit dem es auf dem Außenumfang einer Fräswalze aufgeschweißt werden kann. In das Basisteil ist eine Steckaufnahme eingebracht. In diese kann ein Meißelhalter mit seinem Steckansatz montiert werden. Zur Fixierung des Meißelhalters in dem Basisteil wird eine Druckschraube verwendet, die den Steckansatz in die Steckaufnahme einzieht und hierin verspannt. Der Meißelhalter besitzt als Meißelaufnahme eine Bohrung. In dieser kann ein Meißel, insbesondere ein Rundschaftmeißel auswechselbar montiert werden.From the DE 43 224 01 A1 a chisel holder changing system with a base part and a chisel holder is known. The base part has a support foot with which it can be welded onto the outer circumference of a milling drum. A plug-in receptacle is incorporated into the base part. A chisel holder with its plug-in attachment can be mounted in this. To fix the chisel holder in the base part, a pressure screw is used, which pulls the plug-in attachment into the plug-in receptacle and clamps it therein. The chisel holder has a bore as a chisel holder. A chisel, in particular a point-shank chisel, can be installed in this in an exchangeable manner.

Aus der DE 10 2009 059 189 A1 ist ein weiteres Meißelhalterwechselsystem bekannt, das auf einem ähnlichem Grundaufbauprinzip mit einem Basisteil und einem Meißelhalter basiert. Die hier gezeigte massive Ausführungsform wird üblicherweise in Surface Minern verwendet. Dabei sind die Basisteile wieder auf einem Fräswalzenrohr montiert und so zueinander angeordnet, dass sie wendelförmige Räum- und Ladeschnecken auf der Fräswalzenoberfläche bilden. Während des Bearbeitungseingriffes schneiden die Meißel in das abzubauende Material, beispielsweise ein Kohleflöz ein. Dabei verschleißt der Meißel aufgrund des abrasiven Angriffes kontinuierlich, wodurch sich seine axiale Kopflänge verringert. Sobald der Meißel seine Verschleißgrenze erreicht hat, muss er ausgetauscht werden, um eine Beschädigung des Meißelhalters und/oder des Basisteils zu vermeiden. Nun kann es vorkommen, dass die Fräsmaschine unerwartet auf eine harte Gesteinsschicht trifft wobei mitunter ein Meißel bricht. Dann ist der Meißelhalter dem Verschleißangriff schutzlos ausgesetzt und er ist bereits nach kurzer Dauer untauglich zur Aufnahme eines Ersatzmeißels. Der Meißelhalter muss dann kostenintensiv ausgewechselt werden. Wenn zudem das Basisteil verschlissen ist, muss auch dieses vom Fräswalzenrohr abgetrennt und getauscht werden, wobei dann der Kosten- und Zeitaufwand ungleich höher ist.From the DE 10 2009 059 189 A1 Another chisel holder changing system is known, which is based on a similar basic design principle with a base part and a chisel holder. The massive embodiment shown here is commonly used in surface miners. The base parts are again mounted on a milling drum tube and arranged in relation to one another in such a way that they form helical clearing and loading augers on the milling drum surface. During the machining operation, the chisels cut into the material to be mined, for example a coal seam. The chisel wears continuously due to the abrasive attack, which reduces its axial head length. Once the bit has reached its wear limit, it must be replaced to avoid damaging the bit holder and/or the base. Now it can happen that the milling machine unexpectedly hits a hard layer of rock, sometimes breaking a chisel. The chisel holder is then exposed to the attack of wear without protection and after a short period of time it is unsuitable for receiving a replacement chisel. The chisel holder then has to be replaced, which is expensive. In addition, if the base part is worn out, this must also be separated from the milling drum tube and replaced, in which case the costs and time involved are disproportionately higher.

Aus der US 4932723 ist ein weiteres Meisselhalterwechselsystem bekannt.From the US4932723 Another bit holder changing system is known.

Wird der Verschleißzustand des Meißels nicht rechtzeitig erkannt oder tritt ein Mei-βelbruch auf, so entstehen hohe Werkzeugkosten und zudem Maschinenstillstandszeiten. Solche Maschinenstillstandszeiten sind aber sehr kostenaufwändig und daher auf ein Minimum zu beschränken.If the state of wear of the chisel is not recognized in time or if the chisel breaks, this results in high tool costs and machine downtimes. However, such machine downtimes are very expensive and should therefore be kept to a minimum.

Es ist Aufgabe der Erfindung, die Betriebssicherheit einer Bodenbearbeitungsmaschine zu verbessern.It is the object of the invention to improve the operational reliability of a soil tillage machine.

Diese Aufgabe wird durch Merkmale gemäß Anspruch 1 gelöst.This object is achieved by features according to claim 1.

Wenn während des Betriebseinsatzes der Verschleißzustand des Meißels nicht rechtzeitig erkannt wird oder ein Meißel bricht, so übernimmt das Verschleißschutzelement mit seinem Hartstoffelement die Notlaufeigenschaft und verhindert eine starke Schädigung des Meißelhalters durch den abrassiven Angriff. Damit bleibt die Funktionsfähigkeit des Meißelhalters erhalten und der Maschinenführer kann den schadhaften Meißel schnell austauschen, ohne dass lange Maschinenstillstandszeiten durch Austausch des Meißelhalters oder gar des Basisteils erforderlich sind.If the wear condition of the chisel is not recognized in time during operation or if a chisel breaks, the wear protection element with its hard material element takes over the emergency running property and prevents severe damage to the chisel holder from the abrasive attack. This means that the chisel holder remains functional and the machine operator can quickly replace the defective chisel without the need for lengthy machine downtimes to replace the chisel holder or even the base part.

Gemäß einer bevorzugten Erfindungsvariante kann es vorgesehen sein, dass das Hartstoffelement mit dem radial außen liegenden Körperbereich des die Meißelaufnahme aufweisenden Halteansatz abschließt oder über diesen radial vorsteht beziehungsweise dass das Hartstoffelement gegenüber dem Schneidelement in Radialrichtung zurückversetzt angeordnet ist. Die Meißelhalter sind üblicherweise auf einem Fräswalzenrohr angeordnet und laufen daher kreisförmig um. Während des bestimmungsgemäßen Werkzeugeingriffes schneidet der Meißel beziehungsweise das Schneidelement in das abzutragende Gut ein und das Verschleißschutzelement läuft mit seinem Hartstoffelement passiv ohne Schneideingriff mit. Erst wenn der Meißel beziehungsweise das Schneidelement seinen Verschleißzustand erreicht hat oder ein Werkzeugbruch auftritt, gelangt das Hartstoffelement bestimmungsgemäß in den Wirkeingriff mit dem abzutragenden Untergrund.According to a preferred variant of the invention, it can be provided that the hard material element terminates with the radially outer body region of the holding lug having the chisel receptacle or protrudes radially over it or that the hard material element is arranged set back in the radial direction in relation to the cutting element. The bit holders are usually arranged on a milling drum tube and therefore run in a circle. During the intended tool intervention, the chisel or the cutting element cuts into the material to be removed and the hard material element of the wear protection element runs along passively without cutting intervention. Only when the chisel or the cutting element has reached its state of wear or a tool breakage occurs does the hard material element come into active engagement with the subsoil to be removed as intended.

Wenn zudem vorgesehen ist, dass das Hartstoffelement eine Schneide aufweist, so kann mit dem Verschleißschutzelement während des Noteingriffes auch ein Materialabtrag erfolgen und es wird zudem der Eindringwiderstand des Verschleißschutzelementes reduziert. Hierdurch wird eine übermäßige Beanspruchung des Meißelhalters verhindert.If it is also provided that the hard material element has a cutting edge, material removal can also take place with the wear protection element during the emergency intervention and the penetration resistance of the wear protection element is also reduced. This prevents excessive stress on the bit holder.

Hierbei ergibt sich dann eine wirksame Schneidengeometrie, wenn vorgesehen ist, dass die Schneide zwischen einer in Werkzeugvorschubrichtung weisenden Frontseite und einer Deckseite angeordnet ist, und dass insbesondere der eingeschlossene Winkel zwischen der Frontseite und der Deckseite zur Bildung der Schneide zwischen 60° und 130° gewählt ist. Besonders bevorzugt ist ein Winkelbereich zwischen 90° und 120°, da hier ein guter Kompromiss für eine Schneidengeometrie gefunden ist, die ausreichend stabil und schneidfreudig ist. Gemäß einer Erfindungsausgestaltung kann es vorgesehen sein, dass die Mittellängsachse der Meißelaufnahme und die in Werkzeugvorschubrichtung weisende Frontseite einen Winkel β im Winkelbereich zwischen 40° und 130°, besonders bevorzugt einen Winkel im Winkelbereich zwischen 60° und 110°, einschließen. Hierdurch wird eine Anstellung der Frontseite erreicht, die auch impulsartig auftretende Belastungsspitzen sicher ableiten kann, um die Notlauffunktion aufrecht zu erhalten.In this case, an effective cutting edge geometry results if it is provided that the cutting edge is arranged between a front side pointing in the tool feed direction and a cover side, and that in particular the enclosed Angle between the front side and the top side is chosen to form the cutting edge between 60 ° and 130 °. An angular range between 90° and 120° is particularly preferred, since a good compromise has been found here for a cutting edge geometry that is sufficiently stable and easy to cut. According to one embodiment of the invention, it can be provided that the central longitudinal axis of the chisel holder and the front side pointing in the tool feed direction enclose an angle β in the angular range between 40° and 130°, particularly preferably an angle in the angular range between 60° and 110°. This achieves an adjustment of the front side that can also reliably dissipate load peaks that occur in a pulsed manner in order to maintain the emergency operation function.

Besonders bevorzugt ist es vorgesehen, dass zwei oder mehrere, insbesondere im Wesentlichen spaltfrei aneinander gereihte Hartstoffelemente verwendet sind. Die Verwendung von mehreren Hartstoffelementen anstelle eines großen durchgängigen Hartstoffelementes verringert die Bruchgefahr für das Hartstoffelement. Die spaltfreie Aneinanderreihung verhindert ein Auswaschen der Zwischenräume zwischen den einzelnen Hartstoffelementen, so dass die Befestigung der Hartstoffelemente zuverlässig aufrecht erhalten bleibt.Provision is particularly preferably made for two or more hard material elements to be used, in particular ones which are lined up next to one another essentially without any gaps. The use of several hard material elements instead of one large, continuous hard material element reduces the risk of the hard material element breaking. The gap-free juxtaposition prevents the gaps between the individual hard material elements from being washed out, so that the attachment of the hard material elements is reliably maintained.

Eine stabile Fixierung der Hartstoffelemente gelingt dann einfach, wenn vorgesehen ist, dass das Hartstoffelement in einer Aufnahme des Meißelhalters oder eines mit dem Meißelhalter verbindbaren oder verbundenen Trägers befestigt und entgegen der Werkzeugvorschubrichtung an einer Stützfläche formschlüssig abgestützt ist, und/oder dass das Hartstoffelement in Werkzeugvorschubrichtung an einem Absatz formschlüssig abgestützt ist.Stable fixing of the hard material elements is easily achieved if it is provided that the hard material element is fastened in a receptacle of the chisel holder or in a carrier that can be connected or is connected to the chisel holder and is supported in a form-fitting manner on a support surface counter to the tool feed direction, and/or that the hard material element is in the tool feed direction is positively supported on a paragraph.

Die Hartstoffelemente können mittels einer Lötverbindung oder dergleichen fixiert sein. Diese Verbindung wird durch die rückwärtige Abstützung und/oder den frontseitigen Absatz entlastet.The hard material elements can be fixed by means of a soldered connection or the like. This connection is relieved by the rear support and/or the front shoulder.

Als Hartstoff für das Hartstoffelement kann Hartmetall, Keramikmaterial oder ein sonstiges funktionell gleich wirkendes Material verwendet werden.Hard metal, ceramic material or another material with the same functional effect can be used as the hard material for the hard material element.

Eine Erfindungsalternative kann dergestalt sein, dass ein Träger, der das Hartstoffelement aufnimmt, auswechselbar mit dem Meißelhalter verbunden, insbesondere verschweißt, ist. Hierdurch wird die Variabilität des Werkzeugsystems weiter vereinfacht. Insbesondere können vorhandene Meißelhalter mit einem solchen Träger nachgerüstet werden. Wenn im Schadensfall beispielsweise ein Meißelbruch nicht rechtzeitig erkannt wird, so verschleißt das Verschleißschutzelement. Der komplette Meißelhalter mit dem Träger wird dann ausgetauscht und ein neuer unverschlissener Meißelhalter eingesetzt, so dass nur geringe Maschinenstillstandszeiten entstehen. Anschließend kann der Träger von dem Meißelhalter getrennt werden und ein neuer, unverschlissener Träger mit demselben Meißelhalter wieder verbunden werden, um einen voll einsatzfähigen Meißelhalter zu erhalten.An alternative of the invention can be such that a carrier, which accommodates the hard material element, is exchangeably connected, in particular welded, to the chisel holder. This further simplifies the variability of the tool system. In particular, existing chisel holders can be retrofitted with such a carrier. If, in the event of damage, a broken chisel, for example, is not detected in good time, the wear protection element wears out. The complete tool holder with the carrier is then replaced and a new tool holder that is not worn is used, so that the machine downtimes are kept to a minimum. The carrier can then be separated from the bit holder and a new, unworn carrier reconnected to the same bit holder to obtain a fully operational bit holder.

Eine besonders steife Geometrie, die auch starke Belastungsstöße aufnehmen kann, ergibt sich dadurch, dass der Träger ein Basisteil aufweist, der das Hartstoffelement aufnimmt und dass an das Basisteil ein oder zwei Stützteile entgegengesetzt zur Werkzeugvorschubrichtung angeschlossen sind. Mit den Stützteilen können zum einen große Verbindungsflächen geschaffen werden oder alternativ können die Verbindungsgeometrien mit den Stützteilen so ausgelegt sein, dass sich hohe Momente übertragen lassen.A particularly rigid geometry, which can also absorb strong impact loads, results from the fact that the carrier has a base part that accommodates the hard material element and that one or two support parts are connected to the base part in the opposite direction to the tool feed direction. On the one hand, large connecting surfaces can be created with the support parts, or alternatively, the connection geometries with the support parts can be designed in such a way that high moments can be transmitted.

Eine denkbare Erfindungsvariante ist dergestalt, dass der Träger im Anschlussbereich an den Meißelhalter eine konkave Einmuldung aufweist, die eine Aufsatzfläche zum Anschluss an eine korrespondierende, insbesondere konvexe, Mantelfläche des Meißelhalters aufweist. Über diese Flächenpaarungen kann zum einen eine einfache und schnelle lagerichtige Zuordnung des Trägers zum Meißelhalter erreicht werden. Zum anderen wird über die gemuldete Ausrührung des Trägers die Schaffung einer Formschlussverbindung in Muldenquerrichtung möglich.A conceivable variant of the invention is such that the carrier has a concave indentation in the connection area to the chisel holder, which has a top surface for connection to a corresponding, in particular convex, lateral surface of the chisel holder. On the one hand, these pairings of surfaces can be used to quickly and easily assign the carrier to the chisel holder in the correct position. On the other hand, the troughed design of the carrier makes it possible to create a form-fitting connection in the transverse direction of the trough.

Eine schnelle und zuverlässige Fixierung des Trägers an dem Meißelhalter wird dadurch möglich, dass der Träger an seinen Randbereichen zumindest bereichsweise mit einer als Schweißnaht-Vorbereitung dienenden Anfasung versehen ist.Fast and reliable fixing of the carrier to the chisel holder is made possible by the fact that the carrier is provided with a chamfer on its edge regions, at least in regions, that serves as preparation for the weld seam.

Gegenstand der Erfindung ist auch ein Träger für einen Meißelhalter mit einem, ein Hartstoffelement aufweisenden Verschleißschutzelement, wobei der Träger eine Aufsatzfläche aufweist, über die er mit dem Meißelhalter auswechselbar verbindbar ist. Zur Vermeidung von Wiederholungen wird auf die vorstehenden Ausführungen Bezug genommen und insbesondere auf die mit dem Träger erreichbare Notlaufeigenschaft verwiesen.The subject matter of the invention is also a carrier for a chisel holder with a wear protection element having a hard material element, the carrier having a mounting surface via which it can be connected to the chisel holder in an exchangeable manner. In order to avoid repetition, reference is made to the above statements and in particular to the emergency running property that can be achieved with the carrier.

Gegenstand der Erfindung ist weiterhin eine Bodenbearbeitungsmaschine, insbesondere Bergbaumaschine oder dergleichen, die mit mehreren Meißelhaltern gemäß einem der Ansprüche 1 bis 12 ausgerüstet ist. Bei einer solchen Bodenbearbeitungsmaschine kann es insbesondere vorgesehen sein, dass die radial äußere Begrenzung des Hartstoffelementes auf einem ersten Teilkreis mit einem ersten Radius und die radial äußere Begrenzung des Schneidelementes auf einen dritten Teilkreis mit einem dritten Radius angeordnet ist, und dass der erste Radius des ersten Teilkreises kleiner ist, als der dritte Radius des dritten Teilkreises. Mit dieser Ausgestaltung ist es sichergestellt, dass das Hartstoffelement erst im Verschleiß oder im Schadensfall des Schneidelementes in Wirkeingriff kommt, wie dies bereits vorstehend erläutert wurde.The subject matter of the invention is also a soil cultivating machine, in particular a mining machine or the like, which is equipped with a plurality of chisel holders according to one of claims 1 to 12. In such a soil cultivating machine, it can be provided in particular that the radially outer limit of the hard material element is arranged on a first pitch circle with a first radius and the radially outer limit of the cutting element is arranged on a third pitch circle with a third radius, and that the first radius of the first Pitch circle is smaller than the third radius of the third pitch circle. This configuration ensures that the hard material element only comes into active engagement when the cutting element is worn or damaged, as has already been explained above.

Die Erfindung wird im Folgenden anhand eines in den Zeichnungen dargestellten Ausführungsbeispieles näher erläutert. Es zeigen:

Fig. 1
eine Werkzeugkombination mit einem Basisteil und einem Meißelhalter in perspektivischer Frontansicht,
Fig. 2
die Werkzeugkombination gem. Fig. 1 und perspektivischer Rückansicht,
Fig. 3
ein Verschleißschutzelement in perspektivischer Frontansicht,
Fig. 4
das Verschleißschutzelement gemäß Fig. 3 in perspektivischer Ansicht von unten,
Fig. 5
einen Vertikalschnitt durch die Werkzeugkombination gem. Fig. 1 beziehungsweise Fig. 2,
Fig. 6
den Meißelhalter gemäß der Werkzeugkombination nach den Fig. 1, 2 und 5 in perspektivischer Frontansicht,
Fig. 7
den Meißelhalter gemäß Fig. 6 in perspektivischer Rückansicht,
Fig. 8
einen Vertikalschnitt durch den Meißelhalter,
Fig. 9
eine perspektivische Aufsicht auf das Basisteil gem. den Fig. 1 und 2,
Fig. 10
einen Vertikalschnitt durch das Basisteil gemäß Fig. 9,
Fig. 11
die Werkzeugkombination gem. Fig. 1 und 2 mit einem eingesetzten Rundschaftmeißel im unverschlissenen Zustand,
Fig. 12
die Darstellung gem. Fig. 11 mit einem verschlissenen Rundschaftmeißel,
Fig. 13
die Schneideinheit einer Bodenbearbeitungsmaschine mit einem Schneidrohr, auf dessen Oberfläche eine Vielzahl von Werkzeugsystemen gemäß Fig. 1 und 2 montiert sind und
Fig. 14
die Darstellung gem. Fig. 13 in einem Verschleißzustand.
The invention is explained in more detail below with reference to an exemplary embodiment illustrated in the drawings. Show it:
1
a tool combination with a base part and a chisel holder in a perspective front view,
2
the tool combination acc. 1 and perspective rear view,
3
a wear protection element in a perspective front view,
4
the anti-wear element according to 3 in a perspective view from below,
figure 5
a vertical section through the tool combination acc. 1 respectively 2 ,
6
the chisel holder according to the tool combination according to the Figures 1, 2 and 5 in perspective front view,
7
according to the tool holder 6 in perspective rear view,
8
a vertical section through the tool holder,
9
a perspective view of the base according to Figures 1 and 2 ,
10
according to a vertical section through the base part 9 ,
11
the tool combination acc. Figures 1 and 2 with an inserted pick in an unworn condition,
12
the representation acc. 11 with a worn pick,
13
the cutting unit of a soil tillage implement with a cutting tube, on the surface of which a Variety of tool systems according to Figures 1 and 2 are mounted and
14
the representation acc. 13 in a state of wear.

Fig. 1 zeigt ein Basisteil 10, das eine Unterseite 11 mit konkav gewölbten Aufsatzflächen aufweist. Mittels dieser Aufsatzflächen kann das Basisteil auf den zylindrischen Außenmantel einer Fräswalze aufgesetzt und daran fest geschweißt werden. Mit dem Basisteil 10 ist ein Meißelhalter 20 verbunden. 1 shows a base part 10, which has an underside 11 with concave top surfaces. By means of these top surfaces, the base part can be placed on the cylindrical outer shell of a milling drum and firmly welded to it. A chisel holder 20 is connected to the base part 10 .

Wie Fig. 5 zeigt, weist das Basisteil 10 eine Steckaufnahme 15 auf, die einen Steckansatz 21 des Meißelhalters 20 aufnimmt. Nachfolgend wird unter Bezugnahme auf die Fig. 6 bis Fig. 8 die Ausgestaltung des Meißelhalters 20 näher erläutert.How figure 5 shows, the base part 10 has a plug-in receptacle 15 which receives a plug-in lug 21 of the chisel holder 20 . In the following, with reference to the Figures 6 to 8 the design of the bit holder 20 is explained in more detail.

Wie die Fig. 6 zeigt, weist der Meißelhalter 20 den Steckansatz 21 auf, an den winklig ein Halteansatz 25 angeschlossen ist. Dabei ist idealer Weise zwischen dem Steckansatz 21 und dem Halteansatz 25 ein stumpfer Winkel eingeschlossen. Der Steckansatz 21 bildet im Bereich seiner, in Werkzeugvorschubrichtung (V) gewandten Steckansatzvorderseite 22 eine Frontfläche 21.1. In diese Frontfläche 21.1 sind zwei Aussparungen derart eingetieft, dass sie Druckflächen 21.2 bilden. Die Druckflächen 21.2 sind dabei im Winkel zur Längsachse des Steckansatzes 21 angeordnet. Der die Druckfläche 21.2 tragende Vorsprung des Steckansatzes 21 geht über seitliche Übergangsabschnitte 21.3 in Seitenflächen 21.4 über. Dabei sind die Seitenflächen 21.4 in Richtung der Werkzeugvorschubrichtung (V) ausgerichtet und weisen zu den Werkzeugseiten. Wie die Fig. 7 erkennen lässt, gehen die Seitenflächen 21.4 im Bereich der Steckansätze 23 in Lagerflächen 21.5 über. Dabei stehen die Lagerflächen 21.5 zueinander im Winkel. Die Lagerflächen 21.5 wiederum sind mittels einer Übergangsfläche 21.6 verbunden und weisen entgegengesetzt zur Werkzeugvorschubrichtung V.As the 6 shows, the chisel holder 20 has the plug-in lug 21 to which a holding lug 25 is connected at an angle. In this case, an obtuse angle is ideally enclosed between the plug-in attachment 21 and the holding attachment 25 . The plug-in attachment 21 forms a front surface 21.1 in the area of its plug-in attachment front side 22 facing in the tool feed direction (V). In this front surface 21.1 two recesses are deepened in such a way that they form pressure surfaces 21.2. The pressure surfaces 21.2 are arranged at an angle to the longitudinal axis of the plug-in extension 21. The projection of the plug-in attachment 21 carrying the pressure surface 21.2 merges into side surfaces 21.4 via lateral transition sections 21.3. The side faces 21.4 are aligned in the direction of the tool feed direction (V) and point to the tool sides. As the 7 can be seen, go over the side surfaces 21.4 in the area of the plug-in projections 23 in bearing surfaces 21.5. The bearing surfaces 21.5 are at an angle to each other. The bearing surfaces 21.5 are in turn connected by means of a transition surface 21.6 and point in the opposite direction to the tool feed direction V.

Der Halteansatz 25 ist mit einer Meißelaufnahme 26 in Form einer zylindrischen Bohrung versehen. Die Mittellängsachse M der Meißelaufnahme 26 und die Längsachse L des Steckansatzes 21 schließen idealer Weise einen Winkel im Bereich zwischen 100° und 160°, vorzugsweise 130°, ein. Die Meißelaufnahme 26 geht über eine Einführerweiterung 27 in eine Auflagefläche 25.3 über. Dabei verläuft die Auflagefläche 25.3 radial zur Meißelaufnahme 26. Der Meißelaufnahme 26 abgekehrt geht die Auflagefläche 25.3 in einer Querschnittsverjüngung 25.1 über. Die Querschnittsverjüngung 25.1 ist in Form eine Stumpfkegels ausgebildet und leitet eine Mantelfläche 25.2 des Meißelhalters in die Auflagefläche 25.3 über. Der Halteansatz 25 weist im Bereich unterhalb der Meißelaufnahme 26 zwei Stützflächen 29 auf, die zueinander V-förmig im Winkel angestellt sind. Dabei weisen, wie die Fig. 8 erkennen lässt, die Stützflächen 29 aufgrund ihrer schrägen Anstellung in Richtung auf das freie Ende des Steckansatzes und gleichzeitig in Werkzeugvorschubrichtung (V) und verlaufen, wie in Fig. 3 dargestellt, parallel oder im Wesentlichen parallel zur Mittellängsachse (M) der Meißelaufnahme 26. Wie die Fig. 7 erkennen lässt, besitzt der Halteansatz 25 seitliche Verbreiterungen 28, in denen die Stützflächen 29 auslaufen. Die Stützflächen 29 und die Lagerflächen 21.5 sind in einander entgegengesetzte Richtungen weisend orientiert.The holding lug 25 is provided with a chisel receptacle 26 in the form of a cylindrical bore. The central longitudinal axis M of the chisel receptacle 26 and the longitudinal axis L of the plug-in attachment 21 ideally enclose an angle in the range between 100° and 160°, preferably 130°. The chisel holder 26 merges into a support surface 25.3 via an insertion extension 27. The bearing surface 25.3 runs radially to the chisel receptacle 26. Away from the chisel receptacle 26, the bearing surface 25.3 merges into a cross-sectional narrowing 25.1. The narrowing of the cross section 25.1 is designed in the form of a truncated cone and transfers an outer surface 25.2 of the chisel holder into the bearing surface 25.3. In the area below the chisel receptacle 26, the retaining attachment 25 has two support surfaces 29 which are set at an angle to one another in a V-shape. In doing so, how the 8 can be seen, the support surfaces 29 due to their inclined position in the direction of the free end of the plug-in attachment and at the same time in the tool feed direction (V) and run, as in 3 shown parallel or substantially parallel to the central longitudinal axis (M) of the bit socket 26. Like FIG 7 can be seen, the holding lug 25 has lateral widenings 28 in which the support surfaces 29 expire. The support surfaces 29 and the bearing surfaces 21.5 are oriented in opposite directions.

Wie Fig. 1 und 2 zeigen, ist mit dem Halteansatz 25 des Meißelhalters 20 ein Verschleißschutzelement verbunden, dessen detaillierter Aufbau aus den Fig. 3 und 4 erkennbar ist. Wie diese Darstellungen zeigen, weist das Verschleißschutzelement einen Träger 30 auf, der aus einem Stahlwerkstoff gefertigt ist. Der Träger 30 weist ein Basisteil 35 auf, in das eine Aufnahme 31 in Form einer Ausfräsung eingearbeitet ist. Dabei wird die Aufnahme 31 von einer rückwärtigen Stützfläche 32 und einem frontseitigen Absatz 34 begrenzt. Zwischen der rückseitigen Stützfläche 32 und dem Absatz 34 erstreckt sich eine Aufsatzfläche der Aufnahme 31. In die Aufnahme 31 sind drei Hartstoffelemente 40 eingelötet. Dabei sind die Hartstoffelemente 40 als plattenförmige Bauteile ausgebildet, die mit ihrer Unterseite 44 auf die Aufsatzfläche der Aufnahme 31 aufgesetzt sind. Rückseitig stützen sich die Hartstoffelemente 40 mit einer Rückseite 45 gegenüber der Stützfläche 32 ab. Frontseitig sind sie an dem Absatz 34 abgestützt. Die Hartstoffelemente 40 sind in der Aufnahme 31 spaltfrei aneinander gereiht und mittels einer stoffschlüssigen Verbindung, beispielsweise einer Lötverbindung oder eine Klebverbindung in der Aufnahme 31 fixiert.How Figures 1 and 2 show is connected to the holding lug 25 of the bit holder 20, a wear protection element, the detailed structure of the Figures 3 and 4 is recognizable. As these illustrations show, the wear protection element has a carrier 30 which is made from a steel material. The carrier 30 has a base part 35 in which a receptacle 31 is incorporated in the form of a cutout. The receptacle 31 is delimited by a rear support surface 32 and a shoulder 34 on the front. A top surface of the receptacle 31 extends between the rear support surface 32 and the shoulder 34 . Three hard material elements 40 are soldered into the receptacle 31 . In this case, the hard material elements 40 are designed as plate-shaped components, which are placed with their underside 44 on the top surface of the receptacle 31 . At the rear, the hard material elements 40 are supported with a rear side 45 opposite the support surface 32 . On the front they are at that Paragraph 34 supported. The hard material elements 40 are lined up in a row in the receptacle 31 without a gap and are fixed in the receptacle 31 by means of an integral connection, for example a soldered connection or an adhesive connection.

Die Hartstoffelemente 40 besitzen eine Deckseite 41, an die sich im Winkelbereich α zwischen 60° und 150° eine Frontseite 42 anschließt (siehe Fig. 8). Die Frontseite 42 schließt mit der Mittellängsachse M der Meißelaufnahme 26 einen Winkel β im Winkelbereich zwischen 40° und 130° ein (siehe Fig. 8). Im Übergangsbereich zwischen der Frontseite 42 und der Deckseite 41 ist eine Schneide 46 gebildet. Die Schneiden 46 der einzelnen Hartstoffelemente 40 fluchten miteinander, wie Fig. 3 erkennen lässt. Im Anschlussbereich der Deckseite 41 an die Rückseite 45 ist eine Phase 43 angebracht, um die Bruchgefahr für das Hartstoffelelement 40 zu verringern.The hard material elements 40 have a top side 41, which is adjoined by a front side 42 in the angular range α between 60° and 150° (see FIG 8 ). The front side 42 encloses an angle β in the angular range between 40° and 130° with the central longitudinal axis M of the chisel holder 26 (see Fig 8 ). A cutting edge 46 is formed in the transition area between the front side 42 and the cover side 41 . The cutting edges 46 of the individual hard material elements 40 are aligned with one another, such as 3 reveals. A phase 43 is attached in the connection area of the cover side 41 to the rear side 45 in order to reduce the risk of breakage for the hard material element 40 .

Das Hartstoffelement 40 besteht aus Hartmetall, einem Keramikmaterial oder aus einem gleichwertigen Hartstoff.The hard material element 40 consists of hard metal, a ceramic material or an equivalent hard material.

Wie Fig. 3 weiter zeigt, wird der frontseitige Absatz 34 von einem Ansatz 33 gebildet, der den Übergangsbereich zwischen dem Hartstoffelement 40 und der Aufsatzfläche der Aufnahme 31 zur Frontseite hin überdeckt. Hierdurch wird die stoffschlüssige, insbesondere Lötverbindung, vor Auswaschungen geschützt.How 3 further shows, the front shoulder 34 is formed by a projection 33 which covers the transition area between the hard material element 40 and the attachment surface of the receptacle 31 towards the front side. As a result, the integral connection, in particular the soldered connection, is protected from being washed out.

Entgegengesetzt zur Werkzeugvorschubrichtung V sind an das Basisteil 35 zwei schenkelförmige Stützteile 36 angeschlossen. Dabei wird die Zuordnung zum Basisteil 35 so getroffen, dass sich in Richtung der Werkzeugvorschubrichtung V verlaufende durchgehende Seitenflächen 39 ergeben. Die Stützteile 36 sind zur Oberseite hin mit einer geneigten Schrägfläche 36.1 begrenzt. Im Bereich der Unterseite ist der Träger 30 mit einer konkaven Einmuldung versehen, wie dies Fig. 4 erkennen lässt. Die Einmuldung bildet eine Aufsatzfläche 37.1, die umlaufend von Phasen umgeben ist, die als Schweißnaht-Vorbereitungen 38.1 bis 38.4 dienen.Two leg-shaped support parts 36 are connected to the base part 35 opposite to the tool feed direction V. FIG. The allocation to the base part 35 is made in such a way that continuous side surfaces 39 running in the direction of the tool feed direction V result. The support parts 36 are limited towards the top with an inclined inclined surface 36.1. In the area of the underside, the carrier 30 is provided with a concave depression, like this 4 reveals. The trough forms a top surface 37.1, which is surrounded all around by phases that serve as weld seam preparations 38.1 to 38.4.

Mit der Aufsatzfläche 37.1 kann der Träger 30 auf eine konvexe Mantelfläche 25.2 des Halteansatzes 25 aufgesetzt werden, wie dies Fig. 1 und 2 zeigen. Zur Fixierung des Trägers 30 wird eine Schweißnaht im Bereich der Schweißnaht-Vorbereitungen 38.1 bis 38.4 eingebracht.With the attachment surface 37.1, the carrier 30 can be placed on a convex lateral surface 25.2 of the holding attachment 25, like this Figures 1 and 2 show. In order to fix the carrier 30, a weld seam is made in the area of the weld seam preparations 38.1 to 38.4.

Im montierten Zustand sind die Schneiden 46 quer zur Werkzeugvorschubrichtung V angeordnet. Die Schneiden 46 stehen weiterhin in Radialrichtung über den frontseitigen Aufnahmebereich der Meißelaufnahme 26 vor, wie dies Fig. 6 erkennen lässt. Demgemäß steht die Schneide 46 radial über die äußere Begrenzung des Meißelhalters 20 vor, die vorliegend von der Querschnittverjüngung 25.1 gebildet ist (Fig. 8).In the assembled state, the cutting edges 46 are arranged transversely to the tool feed direction V. The cutters 46 also project radially beyond the front receiving portion of the bit receptacle 26, as shown 6 reveals. Accordingly, the cutting edge 46 projects radially beyond the outer boundary of the chisel holder 20, which in the present case is formed by the cross-sectional reduction 25.1 ( 8 ).

Nachfolgend wird unter Bezugnahme auf die Fig. 9 und 10 die Gestaltung des Basisteils 10 näher erläutert.In the following, with reference to the Figures 9 and 10 the design of the base part 10 is explained in more detail.

Das Basisteil 10 weist eine Steckaufnahme 15 auf, die in ihrem Querschnitt an die Außenkontur des Steckansatzes 21 des Meißelhalters 20 angepasst ausgebildet ist. Frontseitig wird die Steckaufnahme 15 mittels eines Stützansatzes 12 begrenzt.The base part 10 has a plug-in receptacle 15 whose cross section is adapted to the outer contour of the plug-in shoulder 21 of the chisel holder 20 . At the front, the plug-in receptacle 15 is delimited by means of a support attachment 12 .

in den Stützansatz 12 ist eine Schraubaufnahme 13 als Gewinde eingearbeitet. Die Schraubaufnahme 13 mündet in die Steckaufnahme 15. Der Steckaufnahme 15 abgekehrt läuft die Schraubaufnahme 13 in einer Bohrungserweiterung 13.1 aus. Der Stützansatz 12 weist in seinem oberen, radial außenliegenden Bereich ein Auflager 18 auf, das von zwei Stützflächen 18.1 gebildet ist. Die beiden Stützflächen 18.1 sind zueinander im Winkel angestellt. Die Winkelausrichtung der Stützflächen 18.1 ist auf die Ausrichtung der Stützflächen 29 des Meißelhalters 20 angepasst, sodass die Stützflächen 29 des Meißelhalters 20 planparallel auf den Stützflächen 18.1 des Basisteils 10 aufliegen können. Die Stützflächen 18.1 sind zum Zwecke der definierten Anlage des Meißelhalters 20 über einen zurückversetzten Absatz 18.4 miteinander verbunden. Rückseitig wird die Steckaufnahme 15 von einem Gegenlager 16 begrenzt. Das Gegenlager 16 ist dabei Teil eines rückwärtigen Ansatzes 17, der entgegen der Werkzeugvorschubrichtung (V) über die Steckaufnahme 15 vorsteht. Das Gegenlager 16 wird dabei von zwei weiteren Stützflächen 16.1 gebildet, die zueinander im Winkel stehen. Diese weiteren Stützflächen 16.1 sind wieder in ihrer Ausgestaltung und räumlichen Anordnung auf die Lagerflächen 21.5 des Meißelhalters 20 angepasst ausgebildet, sodass eine planparallele Anlage der weiteren Lagerflächen 21.5 an den Stützflächen 16.1 möglich ist. Gegenüberliegend der Stützflächen 18.1 ist die Steckaufnahme 15 von einer Freifläche 18.2 begrenzt. In Werkzeugvorschubrichtung (V) wird die Steckaufnahme 15 von zwei seitlichen Verbindungsabschnitten 19 begrenzt. Die von den Verbindungsabschnitten 19 gebildeten, der Steckaufnahme 15 zugewandten Innenflächen gehen über Freiflächen 18.5 in Wandungen 18.6 über, die wiederum in Werkzeugvorschubrichtung (V) orientiert sind. Die Wandungen 18.6 wiederum laufen in der Freifläche 18.2 aus. Wie die Fig. 9 deutlich erkennen lässt, ist in den Ansatz 17 eine Aussparung 17.1 eingetieft.in the support projection 12 a screw 13 is incorporated as a thread. The screw receptacle 13 opens into the plug-in receptacle 15. Turning away from the plug-in receptacle 15, the screw receptacle 13 ends in a bore enlargement 13.1. In its upper, radially outer area, the support extension 12 has a bearing 18 which is formed by two support surfaces 18.1. The two support surfaces 18.1 are set at an angle to one another. The angular alignment of the support surfaces 18.1 is adapted to the alignment of the support surfaces 29 of the chisel holder 20, so that the support surfaces 29 of the chisel holder 20 can rest plane-parallel on the support surfaces 18.1 of the base part 10. The support surfaces 18.1 are connected to one another via a set-back shoulder 18.4 for the purpose of the defined contact of the chisel holder 20. At the back, the plug-in receptacle 15 is delimited by a counter bearing 16 . The counter bearing 16 is part of a rear extension 17 which protrudes over the plug-in receptacle 15 counter to the tool feed direction (V). The Counter bearing 16 is formed by two further support surfaces 16.1, which are at an angle to one another. These further support surfaces 16.1 are again adapted in their configuration and spatial arrangement to the bearing surfaces 21.5 of the chisel holder 20, so that a plane-parallel contact of the further bearing surfaces 21.5 on the support surfaces 16.1 is possible. Opposite the support surfaces 18.1, the plug-in receptacle 15 is delimited by an open area 18.2. The plug-in receptacle 15 is delimited by two lateral connecting sections 19 in the tool feed direction (V). The inner surfaces formed by the connecting sections 19 and facing the plug-in receptacle 15 transition via free surfaces 18.5 into walls 18.6, which in turn are oriented in the tool feed direction (V). The walls 18.6 in turn run out in the free space 18.2. As the 9 can be clearly seen, a recess 17.1 is deepened in the approach 17.

Die Montage des Meißelhalters 20 an dem Basisteil 10 wird wie folgt vorgenommen.The chisel holder 20 is assembled on the base part 10 as follows.

Zunächst wird der Meißelhalter 20 mit seinem Steckansatz 21 in die Steckaufnahme 15 des Basisteils 10 eingeschoben. Wie die Fig. 5 erkennen lässt, wird dann als Befestigungselement 14 ein Gewindestift in die Schraubaufnahme 13 eingeschraubt. Das Befestigungselement 14 weist eine rechtwinklig zur Schraubachse orientierte Andrückfläche auf, die an der Druckfläche 21.2 des Meißelhalters 20 zur Anlage kommt. Dabei muss die Andrückfläche keine ebene Fläche sein, sondern kann auch eine sphärische Fläche sein. Die Fig. 1 lässt erkennen, dass zur Befestigung des Meißelhalters 20 zwei Befestigungselemente 14 verwendet sind, mithin also auch zwei Schraubaufnahmen 13 in das Basisteil 10 eingearbeitet sind. Bei einer Verspannung der Befestigungselemente 14 drückt das Befestigungselement 14 auf die Druckfläche 21.2 . Aufgrund der winkligen Anstellung der Druckfläche 21.2 zur Mittellängsachse L des Steckansatzes 21 übt das Befestigungselement 14 eine Einzugkraft auf den Steckansatz 21 aus. Gleichzeitig wird eine Kraftkomponente erzeugt, die entgegengesetzt zur Werkzeugvorschubrichtung (V) verläuft und den Steckansatz 21 in das Gegenlager 16 presst. Die in Richtung der Längsachse L des Steckansatzes 21 verlaufende Kraftkomponente bringt die Stützflächen 18.1 des Auflagers 18 mit den Stützflächen 29 des Meißelhalters 20 zur Anlage. Eine Verspannung der Befestigungselemente 14 bewirkt nun, wie dies insbesondere aus der Fig. 5 deutlich erkennbar ist, dass der Meißelhalter 20 beidseitig der Mittellängsachse L des Steckansatzes 21 eine Abstützung erfährt. Zum einen ist die Abstützung am Gegenlager 16 rückseitig der Mittellängsachse am steckansatzseitigen Ende des Meißelhalters 20 und zum anderen am Auflager 18 vorderseitig der Mittellängsachse am halteansatzseitigen Ende des Meißelhalters vorgenommen. Mithin liegen die Stützflächen 29 und die Lagerflächen 21.5 am Meißelhalter 20 diametral gegenüber. Die Befestigungsschraube 14 wirkt nun so auf den Steckansatz 21 ein, dass eine Verspannung des Meißelhalters 20 an dem Auflager 18 und dem Gegenlager 16 stattfindet. Auf diese Weise wird eine sichere und unverlierbare Befestigung des Meißelhalters 20 garantiert.First, the chisel holder 20 is pushed with its socket 21 into the socket 15 of the base part 10 . As the figure 5 can be seen, a threaded pin is then screwed into the screw mount 13 as the fastening element 14 . The fastening element 14 has a pressure surface which is oriented at right angles to the screw axis and which comes to rest on the pressure surface 21.2 of the chisel holder 20. The pressing surface does not have to be a flat surface, but can also be a spherical surface. The 1 shows that two fastening elements 14 are used to fasten the chisel holder 20, and therefore two screw receptacles 13 are also incorporated into the base part 10. When the fastening elements 14 are braced, the fastening element 14 presses on the pressure surface 21.2. Due to the angular position of the pressure surface 21.2 to the central longitudinal axis L of the plug-in attachment 21, the fastening element 14 exerts a pull-in force on the plug-in attachment 21. At the same time, a force component is generated which runs in the opposite direction to the tool feed direction (V) and presses the plug-in attachment 21 into the counter bearing 16 . The force component running in the direction of the longitudinal axis L of the plug-in attachment 21 brings the supporting surfaces 18.1 of the bearing 18 with the support surfaces 29 of the chisel holder 20 to the plant. A tension of the fasteners 14 causes now, as in particular from the figure 5 it can be clearly seen that the chisel holder 20 is supported on both sides of the central longitudinal axis L of the plug-in attachment 21 . On the one hand, the support is provided on the counter bearing 16 on the rear of the central longitudinal axis at the end of the chisel holder 20 on the plug-in attachment end and on the other hand on the support 18 in front of the central longitudinal axis on the end of the chisel holder on the attachment attachment side. Consequently, the support surfaces 29 and the bearing surfaces 21.5 on the chisel holder 20 are diametrically opposite. The fastening screw 14 now acts on the plug-in shoulder 21 in such a way that the chisel holder 20 is braced on the support 18 and the counter bearing 16 . In this way, a secure and captive attachment of the chisel holder 20 is guaranteed.

Fig. 5 lässt weiterhin erkennen, dass in die Bohrungserweiterung 13.1 der Schraubaufnahme 13 ein Abdeckelement 14.1 eingesetzt werden kann, das die Werkzeugaufnahme des Befestigungselementes 14 abdeckt. figure 5 also shows that a cover element 14.1 can be inserted into the widened bore hole 13.1 of the screw receptacle 13, which cover element covers the tool receptacle of the fastening element 14.

Sowohl das Basisteil 10 als auch der Meißelhalter 20 sind im Wesentlichen spiegelsymmetrisch zu der in Werkzeugvorschubrichtung (V) verlaufenden Mittelquerebene dieser jeweiligen Bauteile ausgebildet. Damit wird eine gleichmäßige Lastabtragung begünstigt.Both the base part 10 and the chisel holder 20 are designed to be essentially mirror-symmetrical to the central transverse plane of these respective components running in the tool feed direction (V). This promotes even load transfer.

Während des Betriebseinsatzes greift ein in die Meißelaufnahme 26 eingesetzter Rundschaftmeißel üblicher Bauweise in das abzutragende Gut, beispielsweise ein Kohleflöz ein. Bei diesem Eingriff wird vornehmlich die Abstützung, bestehend aus Auflager 18 und Stützflächen 29 beansprucht. Während des Werkzeugeingriffes wird auch infolge des Werkzeugvorschubes (V) der Meißelhalter 20 in das Gegenlager 16 gepresst. Die großflächige Anlage des Meißelhalters 20 dort garantiert eine sichere Kraftableitung. Wie Fig. 5 erkennen lässt, wird eine eindeutige Zuordnung des Meißelhalters 20 zum Basisteil 10 insbesondere dadurch garantiert, dass nur eine Auflage an diesen beiden vor erwähnten zentralen Stützstellen stattfindet (Auflager 18 und Gegenlager 16). Im Bereich des Absatzes 18.4, der Freifläche 18.2, der Wandungen 18.6 der Freiflächen 18.5 sowie des Verbindungsabschnittes 19 ist der Steckansatz 21 von der Steckaufnahme 15 freigestellt. Wenn nun im Laufe des Einsatzes des Basisteils 10 beispielsweise eine Abnutzung der Stützflächen 18.1 stattfindet, so bildet der Absatz 18.4 einen Nachsetzraum. Die Beabstandung des Meißelhalters 20 von dem Absatz 18.4 garantiert ein Nachsetzen des Meißelhalters 20 im Verschleißfall. Dabei kann ein Verschleißausgleich insbesondere deswegen stattfinden, weil die Stützflächen 18.1 und die weiteren Stützflächen 16.1 Gleitführungen bilden, an denen der Meißelhalter 20 beim Nachspannen entlang rutschen kann. Diese Ausgestaltung ist insbesondere dann von Vorteil, wenn das Basisteil 10, wie dies üblicherweise gefordert ist, eine Standzeit aufweist, die mehrere Lebenszyklen von Meißelhaltern 20 andauert. Unverschlissene Meißelhalter 20 können dann stets auch noch an einem teilverschlissenen Basisteil 10 sicher verspannt und gehalten werden.During operation, a point-shank chisel of conventional design inserted into the chisel receptacle 26 engages in the material to be removed, for example a coal seam. During this intervention, the support, consisting of the bearing 18 and the support surfaces 29, is primarily claimed. During the engagement of the tool, the bit holder 20 is also pressed into the counter bearing 16 as a result of the tool feed (V). The large-area contact of the chisel holder 20 there guarantees a safe transfer of force. How figure 5 can be seen, a clear assignment of the chisel holder 20 to the base part 10 is guaranteed in particular by the fact that there is only one support at these two central support points mentioned above (support 18 and counter bearing 16). In the area of the shoulder 18.4, the open area 18.2, the walls 18.6 of the open areas 18.5 and the connecting section 19, the plug-in projection 21 is released from the plug-in receptacle 15. If now during the use of the base part 10, for example, wear and tear of the support surfaces 18.1 takes place, the shoulder 18.4 forms an adjustment space. The spacing of the chisel holder 20 from paragraph 18.4 guarantees that the chisel holder 20 can be repositioned in the event of wear. A wear compensation can take place in particular because the support surfaces 18.1 and the other support surfaces 16.1 form sliding guides along which the chisel holder 20 can slide during retensioning. This configuration is particularly advantageous when the base part 10, as is usually required, has a service life that lasts for several life cycles of chisel holders 20. Unworn chisel holders 20 can then always be securely braced and held on a partially worn base part 10 .

Während des Betriebseinsatzes wird von dem eingebauten Rundschaftmeißel Abraummaterial abgebaut, das am Meißelhalter 20 im Bereich der Mantelfläche 25.2 abgleitet. Dieses Abraummaterial wird über die Verbreiterungen 28 nach Außen geleitet, wodurch ein Schutz des Basisteils 10 vor dem abrasiven Angriff dieses Abraummateriales bewirkt ist.During operation, the built-in point-shank pick removes excavated material, which slides off the pick holder 20 in the area of the lateral surface 25.2. This excavated material is guided outwards via the widenings 28, as a result of which the base part 10 is protected against the abrasive attack of this excavated material.

In den Fig. 11 und 12 ist die montierte Zuordnung des Meißelhalters 20 zu dem Basisteil 10 gezeigt. Das Basisteil 10 ist mit seiner konkaven Unterseite 11 auf die konvexe Außenseite eines Fräswalzenrohres aufgesetzt und dort festgeschweißt. In die Meißelaufnahme 26 des Meißelhalters 20 ist ein Schaftmeißel, nämlich ein Rundschaftmeißel 50, in bekannter Weise eingesetzt. Der Rundschaftmeißel 50 weist eine aus Hartwerkstoff bestehende Meißelspitze 51 auf, die an einem Meißelkopf 52 befestigt ist. An den Meißelkopf 52 schließt sich ein Meißelschaft an, der mittels einer in den Figuren nicht gezeigte Spannhülse in der Meißelaufnahme 26 gehalten ist. Mittels der Spannhülse kann der Rundschaftmeißel 50 in der Meißelaufnahme 26 in Axialrichtung unverlierbar, jedoch um seine Mittellängsachse M frei drehbar gehalten werden. Der Meißelkopf 52 stützt sich unter Zwischenlage einer Verschleißschutzscheibe 53 gegenüber der Anlagefläche 25.3 ab. Fig. 11 zeigt den Rundschaftmeißel 50 im unverschlissenen Zustand. Während des Betriebseinsatzes rotiert die gezeigte Werkzeugkombination um die Mittellängsachse des Fräswalzenrohres. Dabei dreht sich der Schneideinsatz mit seiner radialäußeren Abmessungsbegrenzung auf einem Teilkreis T3 mit einem dritten Durchmesser. Die radialäußere Begrenzung der Schneiden 46 rotiert auf einem Teilkreis T2 mit einem zweiten Radius. Der in den Fig. 11 und 12 gezeigte Teilkreis T1 mit einem ersten Radius stellt den maximal zulässigen Verschleißzustand der Hartstoffelemente 40 dar.In the 11 and 12 the mounted assignment of the chisel holder 20 to the base part 10 is shown. The base part 10 is placed with its concave underside 11 on the convex outside of a milling drum tube and welded there. A shank chisel, namely a point-shank chisel 50, is inserted in a known manner into the chisel receptacle 26 of the chisel holder 20. The point-shank chisel 50 has a chisel tip 51 made of hard material, which is attached to a chisel head 52 . The chisel head 52 is followed by a chisel shank, which is held in the chisel receptacle 26 by means of a clamping sleeve (not shown in the figures). By means of the clamping sleeve, round-shank chisel 50 can be held captive in chisel receptacle 26 in the axial direction, but can be held freely rotatably about its central longitudinal axis M. The chisel head 52 is supported with the interposition of a wear protection disk 53 from the contact surface 25.3. 11 shows the pick 50 in the unworn state. During operation, the tool combination shown rotates around the central longitudinal axis of the milling drum tube. The cutting insert rotates with its radially outer dimensional limit on a pitch circle T 3 with a third diameter. The radially outer limit of the blades 46 rotates on a pitch circle T 2 with a second radius. The in the 11 and 12 The pitch circle T 1 shown with a first radius represents the maximum permissible state of wear of the hard material elements 40.

Wie Fig. 11 erkennen lässt, sind die Schneiden 46 gegenüber dem Teilkreis T3 in Radialrichtung zurückversetzt angeordnet, so dass der zweite Radius des Teilkreises T2 kleiner ist, als der dritte Radius des Teilkreises T3.How 11 As can be seen, the cutting edges 46 are arranged set back in the radial direction relative to the pitch circle T 3 , so that the second radius of the pitch circle T 2 is smaller than the third radius of the pitch circle T 3 .

Fig. 12 lässt den maximal zulässigen Verschleißzustand des Schneidelementes 51 beziehungsweise des Rundschaftmeißels 50 erkennen. Wie diese Zeichnung veranschaulicht, liegt nun die radial äußere Begrenzung des Schneidelementes 51 auf dem Teilkreis T2, so dass nunmehr auch die Schneidelemente 46 in Eingriff mit dem abzutragenen Gut gelangen. Damit bilden die Hartstoffelemente 40 eine Notlaufeigenschaft, die verhindert, dass sich der vordere Aufnahmebereich der Meißelaufnahme (Anlage 25.3) abnützt oder beschädigt wird. 12 shows the maximum permissible state of wear of the cutting element 51 or the pick 50. As this drawing illustrates, the radially outer boundary of the cutting element 51 now lies on the pitch circle T 2 , so that the cutting elements 46 now also come into engagement with the material to be removed. The hard material elements 40 thus form an emergency running property that prevents the front receiving area of the bit holder (Annex 25.3) from wearing out or being damaged.

In den Fig. 13 und 14 sind die in den Figuren 11 und 12 gezeigten Betriebszustände weiter veranschaulicht. Wie die Fig. 13 und 14 zeigen, sind auf der zylindrischen Oberfläche 61 eines Fräswalzenrohres 60 eine Vielzahl von Werkzeugsystemen, bestehend jeweils aus einem Basisteil 10, einem Meißelhalter 20 und einem Rundschaftmeißel 50 befestigt. Der Übersichtlichkeit halber sind nur einige der Werkzeugsysteme dargestellt. Es ist dem Fachmann aber klar, dass eine Vielzahl von Werkzeugsystemen über die gesamte Umfangsfläche des Fräswalzenrohres 60 verteilt in schraubenwendelförmiger Zuordnung angebracht sind, um Räum- und Ladeschnecken zu bilden. Fig. 13 zeigt den unverschlissenen Zustand der Rundschaftmeißel 50 und verdeutlicht, dass nur die Schneidelemente 51 und nicht die Hartstoffelemente 40 im Eingriff mit dem zu bearbeitenden Flöz F des Bodens B stehen.In the 13 and 14 are the in the Figures 11 and 12 shown operating states further illustrated. As the 13 and 14 show, are on the cylindrical surface 61 of a milling drum tube 60 a variety of tool systems, each consisting of a base part 10, a chisel holder 20 and a pick 50 fixed. For the sake of clarity, only some of the tool systems are shown. However, it is clear to the person skilled in the art that a large number of tool systems are distributed over the entire peripheral surface of the milling drum tube 60 in a helical arrangement in order to form clearing and loading screws. 13 shows the unworn condition of the pick 50 and clarifies that only the cutting elements 51 and not the hard material elements 40 are in engagement with the seam F of the soil B to be worked.

Fig. 14 zeigt den Zustand der Rundschaftmeißel 50 bei Erreichen der Verschleißgrenze. Wie die Zeichnung zeigt, kommen nun die Hartstoffelemente 40 in Eingriff mit dem Flöz F. 14 shows the condition of the pick 50 when the wear limit is reached. As the drawing shows, the hard material elements 40 now come into engagement with the seam F.

Wenn ein Rundschaftmeißel verschlissen ist, dann kann dieser einfach ausgetauscht werden. Dies wird möglich, da die Aussparungen 17.1 im Basisteil 10 zusammen mit der Ausnehmung 24 im Meißelhalter 20 eine Werkzeugaufnahme bilden. In diese kann ein Ausdrückwerkzeug eingesetzt werden, das auf die Rückseite des Rundschaftmeißels einwirkt und diesen aus der Meißelaufnahme 26 ausschiebt und auch einen neuen Rundschaftmeißel wieder einzieht. Wie Fig. 5 erkennen lässt, steht die Meißelaufnahme 26 in räumlicher Verbindung mit der Ausnehmung 24.When a pick is worn out, it can be easily replaced. This is possible because the recesses 17.1 in the base part 10 together with the recess 24 in the chisel holder 20 form a tool holder. An ejection tool can be inserted into this, which acts on the back of the pick and pushes it out of the pick receptacle 26 and also pulls in a new pick. How figure 5 can be seen, the chisel holder 26 is spatially connected to the recess 24.

Claims (14)

  1. Chisel holder (20) for a soil working machine, in particular a surface miner, a road milling machine or the like, with a holding attachment (25) which has a tool receptacle (26) and/or carries a cutting element (51), wherein the holding attachment (25) has or carries a wear protection element with a hard material element (40) in the tool feed direction (V) behind a receiving region of the tool receptacle (26) or behind the cutting element (51), wherein the hard material element (40) has a cutting edge (46), and wherein a carrier (30) which receives the hard material element (40) is interchangeably connected to the tool holder (20).
  2. Chisel holder according to claim 1,
    characterised
    in that the hard material element (40) terminates with or projects radially beyond a radially outer body region of the holding attachment (25) having the in the tool receptacle (26).
  3. Chisel holder according to claim 1,
    characterised
    in that the hard material element (40) is arranged offset back in the radial direction relative to the cutting element (51).
  4. Chisel holder according to one of the claims 1 to 3, characterized
    in that the cutting edge (46) is arranged between a front side (42) pointing in the tool feed direction (V) and a cover side (41) of the hard material element (40), and/or
    in that a front side (42) and a cover side (41) for forming the cutting edge (46) enclose an angle α, in particular in the angular range between 60° and 130°, particularly preferably between 90° and 120°, with one another.
  5. Chisel holder according to any one of claims 1 to 4,
    characterized
    in that a central longitudinal axis (M) of the tool receptacle (26) and a front side (42) pointing in the tool feed direction (V) enclose an angle (β) in the angular range between 40° and 130°, particularly preferably in the angular range between 60° and 110°.
  6. Chisel holder according to any one of claims 1 to 5,
    characterized
    in that two or more hard material elements (40) are used which are lined up in a row, in particular substantially without a gap.
  7. Chisel holder according to any one of claims 1 to 6,
    characterized
    in that the hard material element (40) is fastened in a receptacle of the toolholder (20) or of a carrier (30) which can be connected or is connected to the toolholder (20) and is supported in a form-fitting manner on a supporting surface (32) counter to the tool feed direction (V), and/or
    in that the hard material element (40) is positively supported on a shoulder (34) in the tool feed direction (V).
  8. Chisel holder (20) according to any one of claims 1 to 7,
    characterized
    in that the hard material element (40) consists of tungsten carbide or a ceramic material.
  9. Chisel holder (20) according to any one of claims 1 to 8,
    characterized in
    in that the carrier (30) which receives the hard material element (40) is welded to the toolholder (20).
  10. Chisel holder according to any one of claims 1 to 9,
    characterized
    in that the carrier (30) comprises a base part (35) which receives the hard material element (41), and
    in that one or two support parts (36) are connected to the base part (35) opposite to the tool feed direction (V).
  11. Chisel holder (20) according to any one of claims 1 to 10,
    characterised
    in that the carrier (30) has, in the region of connection to the toolholder (20), a recess, in particular a concave recess, which has an attachment surface (37.1) for connection to a corresponding, in particular convex, lateral surface (25.2) of the toolholder (20).
  12. Chisel holder according to one of the claims 1 to 11,
    characterized
    in that the carrier (30) is provided at edge regions at least in regions with a chamfer serving as a weld seam preparation (38.1 - 38.4).
  13. Soil working machine, in particular mining machine, road building machine or the like, with a rotary body which carries a plurality of chisel holders according to one of claims 1 to 12.
  14. Soil working machine, according to claim 13,
    characterized
    in that a radially outer boundary of the hard material element (41) is arranged on a first pitch circle (T1) having a first radius and a radially outer boundary of a cutting element (51) is arranged on a third pitch circle (T3) having a third radius, and
    in that the first radius of the first pitch circle (T1) is smaller than the third radius of the third pitch circle (T3).
EP13701109.4A 2012-03-01 2013-01-25 Chisel holder Active EP2820243B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102012101719A DE102012101719A1 (en) 2012-03-01 2012-03-01 toolholders
PCT/EP2013/051426 WO2013127578A2 (en) 2012-03-01 2013-01-25 Chisel holder

Publications (2)

Publication Number Publication Date
EP2820243A2 EP2820243A2 (en) 2015-01-07
EP2820243B1 true EP2820243B1 (en) 2023-02-22

Family

ID=47603771

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13701109.4A Active EP2820243B1 (en) 2012-03-01 2013-01-25 Chisel holder

Country Status (7)

Country Link
US (2) US9797246B2 (en)
EP (1) EP2820243B1 (en)
CN (2) CN203214061U (en)
AU (2) AU2013225295A1 (en)
DE (1) DE102012101719A1 (en)
TW (1) TWI577879B (en)
WO (1) WO2013127578A2 (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012101719A1 (en) * 2012-03-01 2013-09-05 Wirtgen Gmbh toolholders
US9992057B2 (en) * 2014-04-25 2018-06-05 International Business Machines Corporation Yield tolerance in a neurosynaptic system
US10036250B2 (en) 2014-07-29 2018-07-31 Us Synthetic Corporation Ripping and scraping cutter tool assemblies, systems, and methods for a tunnel boring machine
DE102014112539A1 (en) * 2014-09-01 2016-03-03 Wirtgen Gmbh Wear protective cap
US10394692B2 (en) * 2015-01-29 2019-08-27 Signalfx, Inc. Real-time processing of data streams received from instrumented software
DE102015112988A1 (en) * 2015-08-06 2017-02-09 Betek Gmbh & Co. Kg cutter
DE102016125917A1 (en) * 2016-12-30 2018-07-05 Wirtgen Gmbh Tool replacement holder
DE102016125921A1 (en) * 2016-12-30 2018-07-05 Wirtgen Gmbh Tool combination with a chisel holder and two chisels
DE102017104651A1 (en) 2017-03-06 2018-09-06 POWER-TECHNOLOGIE GmbH Milling roller and method for milling
USD909165S1 (en) 2019-08-27 2021-02-02 Kennametal Inc Adapter block
US10934840B1 (en) 2019-08-27 2021-03-02 Kennametal Inc. Self-aligning adapter block

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4932723A (en) * 1989-06-29 1990-06-12 Mills Ronald D Cutting-bit holding support block shield

Family Cites Families (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1835701A (en) 1930-01-23 1931-12-08 Bonney Floyd Co Excavating implement
US1965950A (en) 1932-11-07 1934-07-10 Mills Alloys Inc Scarifier tooth
AT339234B (en) 1975-10-29 1977-10-10 Voest Ag CHISEL HOLDER AND METHOD OF MANUFACTURING THEREOF
AT341978B (en) 1976-04-14 1978-03-10 Voest Ag ROUND CHISEL
DE2931785A1 (en) 1979-08-04 1981-02-19 Krupp Gmbh TOOL SYSTEM
SU1102936A1 (en) 1983-03-10 1984-07-15 Ордена Октябрьской Революции И Ордена Трудового Красного Знамени Институт Горного Дела Им.А.А.Скочинского Cutter for mining machines
DE3929609A1 (en) 1988-09-06 1990-04-05 Lvt Loet Und Verschleisstechni Mounting for round shafted chisel - has hard metal lined seating which extends its useful life
US5251964A (en) 1992-08-03 1993-10-12 Gte Valenite Corporation Cutting bit mount having carbide inserts and method for mounting the same
DE4322401C2 (en) 1993-07-06 1996-06-20 Betek Bergbau & Hartmetall Attachment of a cutting tool to a cutting body
US5415462A (en) * 1994-04-14 1995-05-16 Kennametal Inc. Rotatable cutting bit and bit holder
DE4416250C1 (en) 1994-05-07 1995-11-23 Boart Hwf Gmbh Co Kg Holder for an extraction chisel
US6357832B1 (en) 1998-07-24 2002-03-19 The Sollami Company Tool mounting assembly with tungsten carbide insert
DE19924683C2 (en) 1999-05-28 2002-02-28 Betek Bergbau & Hartmetall Method for equipping a chisel head of a shaft chisel and chisel
US6375272B1 (en) * 2000-03-24 2002-04-23 Kennametal Inc. Rotatable cutting tool insert
DE202005013235U1 (en) 2005-08-20 2005-12-15 Kronenberger, Ernst Josef, Dipl.-Ing. Chisel holder for attachment on disk of blade separator, has chisel fastened on holder, where holder and chisel have tungsten-carbide-sinter metals and outer edges of chisel are rotated at ninety degree according to wear
US7413256B2 (en) * 2006-08-11 2008-08-19 Hall David R Washer for a degradation assembly
AU2006252152B2 (en) * 2006-12-20 2009-12-10 Sandvik Intellectual Property Ab Rotary cutting pick
CA2707262A1 (en) * 2007-12-05 2009-06-11 Sandvik Intellectual Property Ab Breaking or excavating tool with cemented tungsten carbide insert and ring, material removing machine incorporating such a tool and method of manufacturing such a tool
US20090256413A1 (en) * 2008-04-11 2009-10-15 Majagi Shivanand I Cutting bit useful for impingement of earth strata
AU2009249704A1 (en) * 2008-05-20 2009-11-26 Sandvik Intellectual Property Ab Carbide block and sleeve wear surface
DE102008045825B3 (en) 2008-09-05 2010-05-27 Wirtgen Gmbh Chisel holder for a cutting machine, road milling machine, Suface miner or the like
US8789894B2 (en) * 2009-01-13 2014-07-29 Diamond Innovations, Inc. Radial tool with superhard cutting surface
DE102009059189A1 (en) 2009-12-17 2011-06-22 Wirtgen GmbH, 53578 Chisel holder and base part for holding a chisel holder
GB201006365D0 (en) * 2010-04-16 2010-06-02 Element Six Holding Gmbh Hard face structure
DE102012101719A1 (en) * 2012-03-01 2013-09-05 Wirtgen Gmbh toolholders

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4932723A (en) * 1989-06-29 1990-06-12 Mills Ronald D Cutting-bit holding support block shield

Also Published As

Publication number Publication date
WO2013127578A3 (en) 2014-03-20
AU2016203485A1 (en) 2016-06-16
TWI577879B (en) 2017-04-11
DE102012101719A1 (en) 2013-09-05
AU2016203485B2 (en) 2018-08-02
WO2013127578A2 (en) 2013-09-06
AU2013225295A1 (en) 2014-08-07
CN203214061U (en) 2013-09-25
CN103290770B (en) 2016-05-04
US9797246B2 (en) 2017-10-24
EP2820243A2 (en) 2015-01-07
US10273804B2 (en) 2019-04-30
TW201337086A (en) 2013-09-16
US20180100393A1 (en) 2018-04-12
CN103290770A (en) 2013-09-11
US20150028654A1 (en) 2015-01-29

Similar Documents

Publication Publication Date Title
EP2820243B1 (en) Chisel holder
EP2336489B1 (en) Pick holder and base section for holding a pick holder
EP2729666B1 (en) Chisel holder for a soil treatment machine
DE19839440C2 (en) Chisel holder for a cutting tool
EP2646653B1 (en) Chisel holder
EP3215330B1 (en) Tool system for a ground milling machine and ground milling machine comprising a tool system of this type
EP2336488A2 (en) Pick holder and base section
EP3049621A2 (en) Tool holder and combination of a tool holder and tool
EP1761682A1 (en) Tool holder
DE202014010650U1 (en) Tool tool holder unit, tool holder and tool
EP2558211B1 (en) Beater bar for an impact crusher, in particular a rotary impact crusher
EP3563000B1 (en) Tool combination having a chisel holder and two chisels
DE4032176C2 (en) Slicer
EP3057394B1 (en) Tool combination comprising a guide element
DE102015220777B4 (en) Tool coupling between two coupling parts as well as coupling part for such a tool coupling
EP3332092B1 (en) Cutting device
EP2766571A2 (en) Shank-type pick and holder
DE102016114447B4 (en) Tillage tines for a tillage implement and tillage implement
EP3331339B1 (en) Cultivator which is screwed on the rear face
EP3362603B1 (en) Skid segment for an edge protection on a road milling machine and edge protection for a road milling machine
EP3563038B1 (en) Interchangeable chisel holder
DE102016106148A1 (en) processing tool
DE19630653C1 (en) Bit for boring machine
EP3781785B1 (en) Milling pick
WO2014000935A2 (en) Bit carrier for a drill head

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20141001

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

DAX Request for extension of the european patent (deleted)
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: EXAMINATION IS IN PROGRESS

17Q First examination report despatched

Effective date: 20200219

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: EXAMINATION IS IN PROGRESS

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: GRANT OF PATENT IS INTENDED

INTG Intention to grant announced

Effective date: 20220902

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE PATENT HAS BEEN GRANTED

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 502013016348

Country of ref document: DE

REG Reference to a national code

Ref country code: AT

Ref legal event code: REF

Ref document number: 1549641

Country of ref document: AT

Kind code of ref document: T

Effective date: 20230315

Ref country code: IE

Ref legal event code: FG4D

Free format text: LANGUAGE OF EP DOCUMENT: GERMAN

REG Reference to a national code

Ref country code: LT

Ref legal event code: MG9D

REG Reference to a national code

Ref country code: NL

Ref legal event code: MP

Effective date: 20230222

P01 Opt-out of the competence of the unified patent court (upc) registered

Effective date: 20230525

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: RS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230222

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230622

Ref country code: NO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230522

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230222

Ref country code: LV

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230222

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230222

Ref country code: HR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230222

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230222

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230222

Ref country code: PL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230222

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230622

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230523

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230222

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SM

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230222

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230222

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230222

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230222

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230222

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 502013016348

Country of ref document: DE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230222

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20231123

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230222