EP2613918B1 - Schrämkette und schrämmaschine - Google Patents

Schrämkette und schrämmaschine Download PDF

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Publication number
EP2613918B1
EP2613918B1 EP11760735.8A EP11760735A EP2613918B1 EP 2613918 B1 EP2613918 B1 EP 2613918B1 EP 11760735 A EP11760735 A EP 11760735A EP 2613918 B1 EP2613918 B1 EP 2613918B1
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EP
European Patent Office
Prior art keywords
cutting
chain
tool
notch
links
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.)
Not-in-force
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EP11760735.8A
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English (en)
French (fr)
Other versions
EP2613918A1 (de
Inventor
Sebastian Desmette
Robert Delwiche
Patrick Marchandise
Dominique Goudelouf
Fabrice Dagrain
Philippe Brux
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PMDS
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PMDS
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Publication date
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Publication of EP2613918A1 publication Critical patent/EP2613918A1/de
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28D—WORKING STONE OR STONE-LIKE MATERIALS
    • B28D1/00—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor
    • B28D1/02—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by sawing
    • B28D1/08—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by sawing with saw-blades of endless cutter-type, e.g. chain saws, i.e. saw chains, strap saws
    • B28D1/082—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by sawing with saw-blades of endless cutter-type, e.g. chain saws, i.e. saw chains, strap saws consisting of chain saws
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27B—SAWS FOR WOOD OR SIMILAR MATERIAL; COMPONENTS OR ACCESSORIES THEREFOR
    • B27B33/00—Sawing tools for saw mills, sawing machines, or sawing devices
    • B27B33/14—Saw chains
    • B27B33/142—Cutter elements
    • B27B33/144—Cutter elements having cutting inserts or exchangeable cutting teeth
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28D—WORKING STONE OR STONE-LIKE MATERIALS
    • B28D1/00—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor
    • B28D1/02—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by sawing
    • B28D1/12—Saw-blades or saw-discs specially adapted for working stone
    • B28D1/124—Saw chains; rod-like saw blades; saw cables
    • B28D1/125—Saw chains; rod-like saw blades; saw cables with exchangeable cutter bits or cutter segments

Definitions

  • the invention relates to cutters for cutting rocks, especially for quarry quarrying.
  • the invention relates more particularly to a chain for a rock shearing machine according to the preamble of claim 1.
  • Rock cutters are well known for the felling of rock masses in quarries. They usually comprise a frame movable on a rock bench, this frame being equipped with an arm carrying a cutting chain mounted in a loop on two gears.
  • the chains of cut are usually formed of a succession of articulated links, at least some of which carry cutting tools.
  • the links are divided into sequences or series of six links, which are repeated over the entire length of the chain.
  • the first two links of the chain each carry a single cutting tool, which is laterally offset from the median plane of the chain.
  • the next four links in the sequence each carry two cutting tools, which are arranged symmetrically with respect to the median plane of the chain.
  • the document EP 0 028 418 discloses a shear chain according to the preamble of claim 1, wherein the cutting tools are inserted into cylindrical countersinks machined at the periphery of the tool holder.
  • the document EP-A-0028418 discloses a method and a device for sawing stones and marbles.
  • the saw chain comprises successive sequences of progressively shaped links in which cutting heads of various shapes support cutting inserts.
  • a disadvantage of these known chains is the difficulty of removing rock debris that accumulates on the cutting tools as the progress of the shearer on a rock bench.
  • rock debris falls into the bottom of the cut where they accumulate.
  • This rock debris affects the efficiency of the cutting operation, the performance of the shearing machine and the holding of the cutting tools.
  • Tool holders and chain links are gradually damaged by abrasion.
  • the accumulation of rock debris in front of and around the cutting tools as well as in the bottom of the notch has the detrimental result, on the one hand, of filling the teeth of the drive pinion of the chain, located in end of the arm and, secondly, to deflect the chain laterally.
  • the accumulation of debris in the pinion has the effect of lengthening the chain. This causes an increase in the tension in the chain and can induce premature breakage of the chain. The deflection of the chain causes premature wear of the tool holders and also an imprecise hacking.
  • the invention aims to remedy the aforementioned disadvantages of known chains of shearers.
  • the invention more particularly aims to provide a shear chain, in which the evacuation of rock debris is facilitated, so that the volume of rock debris accumulating in front of the cutting tools and in the bottom of the notch is greatly reduced and well controlled.
  • the invention aims to reduce the mechanical stresses acting on the cutting chains and their cutting tools, to increase the service life of the chains and cutting tools, to improve the accuracy, efficiency and performance of the cutting operations. havage.
  • the invention provides a chain for rock cutter, comprising at least one sequence of at least two active links each carrying at least one cutting tool on a tool holder, to practice a cut in the rock which has a front of size and sidewalls, the cutting tools having a disposition on said links which determines a face-of-height profile, said chain being characterized in that the tool holders of the active links have substantially identical profiles, which have a front face opposite the cutting face of the notch and two lateral faces facing the side walls of the notch and substantially match the profile of the cut face of the front by having a gap between said front and side faces of the tool holders and the walls of the notch less than 5 mm and greater than 0.1 mm and in that the position of one of the cutting tools on its active link is different from the position of the other cutting tool on its link, and in that, in the case where the chain comprises several active link sequences, said sequences are identical, comprising the same number of active links and the same number of tool holders identical.
  • the chain according to the invention comprises a loop of links between two gears, which are interconnected by means of articulations and which carry cutting tools.
  • each link carries at least one cutting tool.
  • one or more links of the chain can be without cutting tool.
  • active link refers to any link in the chain bearing at least one cutting tool. Subsequently, the term “inactive link” shall mean, where appropriate, any link without cutting tools.
  • active link sequence refers to a succession of active links in the chain.
  • the chain can comprise a single sequence or several successive and identical sequences, as is usually the case for known cleavage chains.
  • the or each active link sequence comprises at least two active links. It may comprise a greater number of active links, for example at least six active links.
  • the number of active links of the or each sequence is not critical for the definition of the invention, but must, according to the invention, be at least equal to 2.
  • the or each active link sequence may incorporate one or more inactive links which intercalate between the active links.
  • the inactive links may be identically distributed in each of the successive sequences of the chain. However, it is preferred to distribute them distinctly in the sequences, so that during normal use of the chain on a shearer, the sequences have vibration frequencies distinct from each other.
  • the optimum number of active links and, where appropriate, the number of inactive links will depend on various parameters, among which the nature of the rock, including its hardness, the length of the chain and the type of cutting tools used. They must be determined in each particular case by those skilled in the art. Sequences comprising at least 6 active links are suitable in the majority of applications. Those comprising at least 12 (preferably 15 to 25) active links being especially recommended.
  • each active link carries only one cutting tool.
  • the number of active links (and, consequently, the number of cutting tools) in the or each sequence is advantageously greater than 10, preferably at least 12, by example between 15 and 25.
  • All the links of the chain according to the invention can be distributed in a single sequence.
  • the links of the chain are generally divided into at least two identical sequences.
  • the number of sequences is however not critical for the definition of the invention and it will be determined by the length of the chain and the number of active links (and, where appropriate, inactive links) of each sequence.
  • the links in the chain be divided into at least 2 (preferably at least 3) sequences, the numbers of 4 to 15 sequences (preferably 4 to 10 sequences) being generally well suited, although higher number of sequences is not incompatible with the definition of the invention.
  • the active links may carry a single cutting tool or several cutting tools (for example two cutting tools). It may happen that in the same sequence, one or more active links has (s) only one cutting tool, while others have more than one cutting tool. In general, the number of active links is higher (often much higher) than the number of inactive links.
  • Cutting tools are not critical for the definition of the invention. They can advantageously consist of platelets in an active material resistant to abrasion:
  • the choice of the active material cutting tools will depend on various parameters, including the nature of the rock and the power of the shearer. Depending on whether the rock is soft or hard, it is possible for example to use a metal carbide (for example tungsten carbide) or polycrystalline diamond.
  • the platelets may be circular, oval or polygonal circular platelets or ovoid platelets. Cylindrical plates with a cylindrical, square or rectangular base are preferred.
  • the cutting tools will notch the rock.
  • the cut thus formed has a face in front of the cutting tools, the profile of which is determined by the arrangement of the cutting tools on the links of the chain.
  • the cutting tools are attached to the active links via tool holders.
  • the tool holders of the active links are identical and they have a profile that matches the profile of the cut face.
  • This expression means that at any point on the surface of the tool holder, which is located opposite the wall of the notch, the spacing between this point and this wall is minimal.
  • the toolholder while the chain cuts the rock, the toolholder has a front face facing the cut face and two side faces facing the side walls of the notch and the gap between these front and side faces, on the one hand, and the walls of the notch, on the other hand, is minimal.
  • This particular profile of the tool holders has the advantageous effect of guiding the tool holders and the chain in the notch as the chain progresses in the rock mass.
  • the spacing be greater than 0.1 mm.
  • the value of the aforesaid spacing between the tool holders and the wall of the notch influences the efficiency with which the tool holder rises the cuttings generated by the cutting tool.
  • Small cuttings are all driven by the tool holder and raised to the surface, outside the notch, that the spacing is low.
  • the cutting of the rock is sometimes done by immersing the notch in a coolant, usually water. The water is driven out of the notch by the upward movement of the tool holders.
  • a leakage flow is organized through it. There is then a competition between the leakage flow, which allows the fluid back down along the chain, and the drive of the same liquid by the successive tool holders.
  • the drive of the fluid is greater than the flow of fluid throughout the ascent of the tool holders. Then we clean the notch cuttings, but also the fluid. This gives a good cleaning of the cutting line.
  • the entrained fluid also keeps the cuttings suspended in it and helps to clean the cut.
  • a small gap protects the cutting tool from shocks that may occur when cutting heterogeneous rocks, or vibration of the shearer or its chain.
  • a second feature of the invention relates to the position of the cutting tools on their tool holders.
  • the or each active link sequence comprises at least two active links and each active link comprises at least one cutting tool.
  • the position of one of these two cutting tools on the tool holder of its link is different from the position of the other cutting tool on the tool holder of the other link.
  • a third characteristic of the invention applies specifically to the particular case where the chain comprises several successive sequences of active links.
  • the successive sequences of active links are identical and the number of cutting tools of a sequence and their respective dispositions in this one are repeated in the other sequences.
  • the or each active link sequence may incorporate one or more inactive links that interconnect between the active links.
  • the or each sequence of the chain comprises at least one inactive link, it also carries a tool holder, the latter not however carrying a cutting tool.
  • the toolholders of the inactive links are advantageously identical to the tool holders of the active links. They reinforce the guide of the chain in the notch and participate in scraping and evacuation of rock debris.
  • the tool holders be symmetrical with respect to a median plane of the chain (the median plane being, by definition, a fictitious plane which covers substantially the set of links and sprockets of the chain).
  • the tool holders can be an integral part of the links that carry them. However, it is preferred according to the invention that the tool holders are removably attached to links of the chain. Examples of removable fasteners are described and schematized in the documents FR 2 521 061 and EP 0 028 418 .
  • the cutting tools cut a notch in the rock, whose thickness is equal to the largest spacing between the cutting tools located on either side of the median plane of chain.
  • This notch has a face in front of the cutting tools, whose profile is determined by the arrangement of cutting tools in the sequences.
  • the set of cutting tools of the or each sequence forms a fan in a plane transverse to the longitudinal axis of the chain (the longitudinal axis of the chain being by definition an axis that joins the centers of the two aforementioned gears of the chain).
  • the profile of this fan will condition the profile of the cut face of the notch, which can thus be concave or convex.
  • a convex front is schematized at the figure 4 of the document EP 0 028 418 In practice, it is usual for the size fronts to have both a concave portion and a convex portion.
  • a face of height will be said convex if more than 25% of the length of the face of size (for example from 50 to 80% of this one) has a convex profile.
  • a face of size will be said concave if more than 25% of the length of the face (eg 50 to 80% of it) has a concave profile.
  • the invention also relates to a toolholder that can be used on a rock cutter chain according to the invention.
  • the tool holder according to the invention has all of the features listed above, concerning the tool holders of the chain according to the invention.
  • the tool holder according to the invention may comprise one or more cavities, each intended for the insertion of a cutting tool. This or each of these cavities may be machined in the tool holder before being put on the market. However, according to the invention, it is preferred that the commercially available tool holders do not comprise such cavities, the machining thereof being carried out a posteriori as a function of various operating parameters such as the nature of the rock in question. to treat, the length of the shearer chain, the shape and the constitution of the cutting tools and the distribution of these in sequences on the shearer chain. This variant allows mass production of standard tool holders.
  • the tool holder has a plane of symmetry which, when the tool holder is mounted on a link of the chain, coincides with the median plane of the chain (the median plane of the chain having been defined above). .
  • the invention also relates to a method for the manufacture of a rock cutter chain, in which cutting tools are reported on links of the chain, said method being characterized in that implements toolholders compliant according to the invention, defined above, at least one cavity is machined in each tool holder, a cutting tool is inserted into said cavity and the tool holder is fixed to a link of the chain, making sure that that the plane of symmetry of said tool holder is substantially coincident with the median plane of the chain.
  • the chain according to the invention is intended to equip shears for cutting rocks.
  • the invention therefore also relates to shearers which are characterized by a chain according to the invention.
  • the shears according to the invention are suitable for the extraction of all types of quarry stone. They find many applications, especially for the extraction of limestone such as marble and travertine, for example.
  • the shearer represented at figure 1 comprises a frame 7 movable in the direction of the arrow X on a pair of rails 9 placed on a bed of rock or rock mass 10.
  • the shearer 7 comprises a steerable arm 8 carrying a chain 1 mounted in a loop on two pinions 2 and 3.
  • the pinion 3 is coupled to a motor, not shown, to drive the chain 1 in the direction of the arrow Y.
  • the chain 1 is formed of links 4 connected to each other by articulations and carrying cutting tools (not visible to the figure 1 ).
  • the shearer moves the frame 7 on the rails 9 in the direction of the arrow X and the chain 1 progressively cuts a notch 11 in the rock bench 10.
  • the figure 2 shows a link 4.
  • the link 4 is interposed between two similar links (not shown) to which it is linked by two joints (only one of which is represented, indicated by the notation 13).
  • the connection of the hinge 13 to the link 4 is ensured by a pin 12.
  • the link 4 carries a tool holder 16. This is symmetrical and comprises two perpendicular plates 18 and 21.
  • the plate 21 is placed and fixed on the link 4, against a shoulder 14, by means of a bolt 15.
  • Two longitudinal tabs 17 ensure the centering of the tool holder 16 on the link 4.
  • the plate 18 is perpendicular to the plate 21 and the link 4. It has a plane of symmetry which is coincident with the median plane of the link 4.
  • the plate 18 further has a withdrawal in its central zone 19 and two symmetrical withdrawals 20 where it is connected to the plate 21.
  • the figure 3 shows eleven identical 16 tool holders.
  • the eleven tool holders of the figure 3 are mounted on eleven successive active links 4 of the chain 1.
  • the eleven tool holders 16 each carry a cutting tool 22.
  • the cutting tools 22 are cylindrical plates engaged in cavities which have been previously drilled in the plate 18 of the door -tools.
  • the eleven cutting tools 22 are distributed in a sequence, better visible at the figure 4 . They occupy eleven different positions (numbered respectively 22A, 22B, 22C, 22D, 22E, 22F, 22G, 22H, 22I, 22J and 22K) to form a sequence.
  • the sequence of the eleven cutting tools 22, better represented in the figure 4 is arranged so that the cut cut in the rock has a concave face size.
  • Inactive links 4 can optionally alternate with the active links carrying the eleven tool holders 16 of the figure 3 .
  • the inactive links can advantageously carry a toolholder substantially identical to those of the figure 3 , but without cutting tool 22.
  • the cutting tools 22 project beyond the periphery of the plate 18 to cut the rock.
  • the gap between the edge of the plate 18 and the end of the cutting tool 22 is between 0.3 and 2.5 mm.
  • the position of the cutting tools 22 on their respective tool holders is arranged so that the cut in the rock has a profile that matches that of the plate 18 of the tool holders, as has been explained above.
  • the front face 23 of the tool holders 16 is opposite the cutting face of the notch and the two lateral faces 24 of the tool holders are opposite the side walls of the notch.
  • the plate 18 of the tool holders thus performs a scraping function, to retain and evacuate the rock debris accumulating in front of it.
  • the first tools of the sequence that attack the rock are the outer tools 22J and 22K, which has the advantage, compared to a convex fan arrangement (where the first tool that attacks the rock is the central tool of the sequence) to stabilize the chain by preventing it from oscillating laterally.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)

Claims (12)

  1. Kette für eine Steinschrämmaschine, umfassend mindestens eine Sequenz von mindestens zwei aktiven Gliedern, die jeweils mindestens ein Schneidwerkzeug auf einem Werkzeughalter tragen, um eine Kerbe in den Stein einzuarbeiten, die eine Einschnittfront und Seitenwände aufweist, wobei die Schneidwerkzeuge eine Vorrichtung auf den Gliedern aufweisen, die ein Einschnittfrontprofil bestimmt, wobei die Position eines der Schneidwerkzeuge (22A) auf seinem aktiven Glied (4) zu der Position des anderen Schneidwerkzeugs (22B) auf seinem Glied unterschiedlich ist, dadurch gekennzeichnet, dass die Werkzeughalter (16) der aktiven Glieder (4) im Wesentlichen identische Profile haben, die eine Vorderfläche (23) gegenüber der Einschnittfront der Kerbe und zwei Seitenflächen (24) gegenüber den Seitenwänden der Kerbe aufweisen und sich im Wesentlichen an das Profil der Einschnittfront der Kerbe (11) anlegen, wobei sie einen Abstand zwischen den Vorder- und Seitenflächen der Werkzeughalter und den Wänden der unteren Kerbe von 5 mm und der oberen Kerbe von 0,1 mm aufweisen, und dass, falls die Kette (1) mehrere Sequenzen von aktiven Gliedern (4) umfasst, die Sequenzen identisch sind, umfassend eine selbe Anzahl von aktiven Gliedern (4) und eine selbe Anzahl von identischen Werkzeughaltern (16).
  2. Kette nach Anspruch 1, dadurch gekennzeichnet, dass sie 4 bis 15 aufeinanderfolgende und identische Sequenzen besitzt, jeweils umfassend mindestens 6 aktive Glieder (4).
  3. Kette nach dem einen oder dem anderen der Ansprüche 1 und 2, dadurch gekennzeichnet, dass der Abstand zwischen den Seitenflächen (24) der Schneidwerkzeuge und den Seitenwänden der Kerbe 0,20 bis 4,00 mm beträgt.
  4. Kette nach Anspruch 3, dadurch gekennzeichnet, dass der Abstand 0,30 bis 3,00 mm beträgt.
  5. Kette nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass zusätzlich zu den aktiven Gliedern (4) die oder jede Sequenz mindestens ein inaktives Glied umfasst, das einen Werkzeughalter (16) ohne Schneidwerkzeug trägt, dessen Profil mit jenem der Werkzeughalter (16) der aktiven Glieder (4) identisch ist.
  6. Kette nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass das aktive Glied (4) nur ein einziges Schneidwerkzeug (20) trägt.
  7. Kette nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, dass die Werkzeughalter (16) in Bezug zu einer Mittelebene der Kette symmetrisch sind und mindestens ein Schneidwerkzeug (20) der Werkzeughalter (16) der oder jeder Sequenz in Bezug zur Mittelebene der Kette (1) versetzt ist.
  8. Kette nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass in der oder jeder Sequenz die Schneidwerkzeuge (22) fächerartig angeordnet sind, so dass mindestens ein Teil der Einschnittfront der Kerbe ein konkaves Profil hat.
  9. Kette nach Anspruch 8, dadurch gekennzeichnet, dass der oben erwähnte konkave Teil der Einschnittfront eine Länge hat, die größer als 25 % der Länge der Einschnittfront ist.
  10. Kette nach Anspruch 9, dadurch gekennzeichnet, dass die Länge des oben erwähnten konkaven Teils 50 bis 80 % der Länge der Einschnittfront beträgt.
  11. Kette nach einem der Ansprüche 8 bis 10, dadurch gekennzeichnet, dass sich der konkave Teil in der Mitte der Einschnittfront befindet.
  12. Schrämmaschine zum Schneiden von Steinen, umfassend eine Kette (1) nach einem der Ansprüche 1 bis 11.
EP11760735.8A 2010-09-06 2011-09-05 Schrämkette und schrämmaschine Not-in-force EP2613918B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BE2010/0521A BE1019468A3 (fr) 2010-09-06 2010-09-06 Chaine de haveuse a roche avec porte-outils, procede de fabrication de celle-ci et haveuse.
PCT/EP2011/065302 WO2012032009A1 (fr) 2010-09-06 2011-09-05 Chaine de haveuse a roche et haveuse

Publications (2)

Publication Number Publication Date
EP2613918A1 EP2613918A1 (de) 2013-07-17
EP2613918B1 true EP2613918B1 (de) 2015-03-11

Family

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EP11760735.8A Not-in-force EP2613918B1 (de) 2010-09-06 2011-09-05 Schrämkette und schrämmaschine

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EP (1) EP2613918B1 (de)
BE (1) BE1019468A3 (de)
PT (1) PT2613918E (de)
WO (1) WO2012032009A1 (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108247870A (zh) * 2018-03-16 2018-07-06 辽宁工程技术大学 一种实验用煤炭切割设备及动态实验系统
IT201800009296A1 (it) * 2018-10-09 2020-04-09 Fabio Bigini Utensile di taglio e tagliatrice a catena per materiale lapideo e simili

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29913859U1 (de) * 1999-01-12 1999-12-16 Fantini Sud Srl Universal-Schneidzahnung mit prismatischen sternförmigen Plättchen

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR595131A (fr) * 1925-03-09 1925-09-26 Haveuse à chaîne pour l'abattage des argiles réfractaires
FR2468452A1 (fr) * 1979-11-05 1981-05-08 Perrier Fernand & Cie Procede et dispositif pour le sciage de pierres et marbres
IT1115100B (it) * 1980-12-18 1986-02-03 Fantini Luigi Macchina perfezionata per il taglio della roccia in una cava di travertino o simile
EP0078041B1 (de) * 1981-10-23 1986-03-12 Maschinenfabrik Korfmann GmbH Schrämkette für eine Steinschneidmaschine
IT1147600B (it) * 1982-02-08 1986-11-19 Luigi Fantini Catena tagliante per macchine,per il taglio della roccia in cave di travertino o simili,ad utensili tagliante amovibile ed a piu' posizioni operative
BE1019003A3 (fr) * 2009-11-19 2011-12-06 Pmds Sa Nv Chaine de haveuse et haveuse.

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29913859U1 (de) * 1999-01-12 1999-12-16 Fantini Sud Srl Universal-Schneidzahnung mit prismatischen sternförmigen Plättchen

Also Published As

Publication number Publication date
WO2012032009A1 (fr) 2012-03-15
BE1019468A3 (fr) 2012-07-03
EP2613918A1 (de) 2013-07-17
PT2613918E (pt) 2015-08-21

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