EP2613918A1 - Chaine de haveuse a roche et haveuse - Google Patents
Chaine de haveuse a roche et haveuseInfo
- Publication number
- EP2613918A1 EP2613918A1 EP11760735.8A EP11760735A EP2613918A1 EP 2613918 A1 EP2613918 A1 EP 2613918A1 EP 11760735 A EP11760735 A EP 11760735A EP 2613918 A1 EP2613918 A1 EP 2613918A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- chain
- tool
- cutting
- links
- tool holders
- 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.)
- Granted
Links
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 more specifically relates to a chain for a rock cutter.
- shearers and chains of havage is found in the documents FR 2 496 544 and FR 2 521 061.
- the cutting tools are mounted on tool holders which are themselves attached to the links. .
- the attachment of the tool holders to their respective links is removable.
- 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.
- rock debris falls into the bottom of the cut where they accumulate. This rock debris detracts from the efficiency of the cutting operation, the performance of the shearer and the holding of the tools
- the invention aims to remedy the aforementioned disadvantages of known chains of shearers.
- the invention relates to providing 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 relates to 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, said chain is characterized in that the tool holders have substantially identical profiles, which substantially match the profile of the cut face and in that the position of one of the cutting tools on its active link is different from the position of the cutter. another tool cutting on its link.
- the invention comprises a loop of links between two gears, which are interconnected by means of
- 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 sequence of active links 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.
- active link sequences the number of cutting tools of a sequence and their respective dispositions in it are repeated in the other sequences.
- the or each active link sequence may incorporate one or more inactive links that
- the inactive links may be identically distributed in each of the successive sequences of the chain. We prefer, however, to divide distinctly in the sequences, so that, during normal use of the chain on a shearer, the sequences exhibit vibrational frequencies
- 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 numbers of
- sequence is not critical for the definition of the invention and 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 of the chain be divided into at least 2 (preferably at least 3) sequences, the numbers of 4 to 15 sequences (preferably from 4 to 10 sequences) generally well, although a higher number of sequences are not
- 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 abrasion-resistant active material.
- active ingredient 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.
- a metal carbide for example tungsten carbide
- polycrystalline diamond for example
- 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 by
- the tool holders are substantially identical and have a profile that substantially matches the profile of the notch 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 tool holder while the chain cuts the rock, the tool holder has a front face opposite the cut face of the notch and two lateral 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.
- tool holders have the advantageous effect of guiding the tool holders and the chain in the notch as the chain progresses in the rock mass. This reduces the stresses on the links of the chain and reduces the volume of rock debris accumulating in front of the cutting tools during the progression of the chain in the rock mass, the tool holders scraping any debris of rock or other object present in the notch.
- the value of the spacing influences the efficiency with which the tool holder will go up the cuttings generated by the cutting tool. Cuttings of dimensions smaller than the spacing will be driven by the tool holder and raised to the surface, outside
- the notch The smaller the gauge, the smaller the cuttings will be driven.
- 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. Depending on the size of the gap, a leakage flow
- a small gap protects the cutting tool from shocks that may occur when cutting heterogeneous rocks, or vibration of the shearer or its chain.
- the tool holders carry a scraper element at their periphery.
- the scraper element has the function of collecting rock debris and putting it back out of the cut.
- the scraper elements may be metal plates arranged
- 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.
- the or each active link sequence may incorporate one or
- the invention applied to the case where 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 substantially identical to the tool holders of the active links. They reinforce the guiding the chain in the cut and participate in the 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 fastening are described and schematized in 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 provision of cutting tools in the
- 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 gables of the chain
- a convex front is schematized in FIG. 4 of EP 0 028 418, as well as in FIG. 2 of the Belgian patent application 2009/0708 filed on 19/11/09.
- a concave forehead is shown in FIG. 4 of the Belgian patent application 2009/0708.
- the size fronts 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 font size (for example from 50 to 80% of it) has a convex profile.
- a face of size will be said concave if more than 25% of the length of the font size (eg 50 to 80% of it) has a concave profile.
- the chain according to the invention may optionally incorporate one or more active links which do not comprise tool holders according to the invention. Subsequently, these links, which are not in accordance with the invention, will be called "active links
- the secondary active links necessarily carry at least one cutting tool.
- this variant of the invention can be applied to the chains whose aforementioned sequence comprises only two active links according to the invention, in practice it is intended for the chains of which said sequence comprises a large number of active links in accordance with FIG. the invention.
- the active secondary links are interposed at intervals between the active links conforming to
- the invention for example due to a secondary active link between two successive groups of at least two, preferably three or more active links according to the invention.
- the chain does not comprise secondary active links, all the active links then being in accordance with the invention.
- the chain according to the invention may also comprise inactive links which do not comprise a tool holder according to the invention.
- These inactive links will be designated later "secondary inactive links”. For these secondary inactive links, we can repeat what was explained above for the secondary active links.
- the chain according to the invention does not contain secondary active links or secondary inactive links.
- the invention also relates to a toolholder that can be used on a rock cutter chain according to the invention.
- the tool holder that can be used on a rock cutter chain according to the invention.
- 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 tool holders put on the market do not include such cavities, the machining thereof being
- the tool holder has a plane of symmetry which, when the tool holder is mounted on a link of the chain, is substantially coincident 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 in the chain, making sure 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 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.
- Figure 1 is a schematic side view of a shearer according to the invention, in use on a rock bench;
- Figure 2 is an exploded perspective on a large scale, of an active link of a chain according to the invention
- Figure 3 shows a plurality of tool holders according to the invention.
- Figure 4 shows a sequence of cutting tools of a chain according to the invention.
- the shearer shown in 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 interconnected by joints and carrying cutting tools (not visible in Figure 1). During the operation of the shearer, the frame 7 is moved on the rails 9 in the direction of the arrow X and the chain 1 cuts
- Figure 2 shows a link 4.
- Link 4 is interposed between two similar links (no
- 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.
- Figure 3 shows eleven identical tool holders 16.
- the eleven tool holders of FIG. 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 the previously drilled in the plate 18 of the tool holders.
- the sequence of the eleven cutting tools 22, better represented in FIG. 4, is arranged so that the notch cut in the rock has a concave size face.
- the sequence of the eleven cutting tools 22, better represented in FIG. 4 is arranged so that the notch cut in the rock has a concave size face.
- Detailed information regarding the sequential arrangement of cutting tools and the profile of the face of size are available in the Belgian patent application 2009/0708 mentioned above.
- Inactive links 4 can optionally alternate with the active links carrying the eleven tool holders 16 of Figure 3. Although it is not an obligation in the context of the invention, the links inactive can advantageously carry a tool holder substantially identical to those of Figure 3, but without cutting tool 22.
- the cutting tools 22 protrude from the periphery of the plate 18 to perform the cutting of the rock.
- the gap between the flange of the plate 18 and the end of the cutting tool 22 is substantially between 0.3 and 2.5 mm.
- the position of the cutting tools 22 on their respective tool holders is arranged so that the notch in the rock has a profile that substantially 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 facing 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.
Landscapes
- 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)
Abstract
Description
Claims
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 true EP2613918A1 (fr) | 2013-07-17 |
EP2613918B1 EP2613918B1 (fr) | 2015-03-11 |
Family
ID=43743446
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP11760735.8A Not-in-force EP2613918B1 (fr) | 2010-09-06 | 2011-09-05 | Chaine de haveuse a roche et haveuse |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP2613918B1 (fr) |
BE (1) | BE1019468A3 (fr) |
PT (1) | PT2613918E (fr) |
WO (1) | WO2012032009A1 (fr) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108247870B (zh) * | 2018-03-16 | 2024-07-23 | 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 |
Family Cites Families (7)
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 (fr) * | 1981-10-23 | 1986-03-12 | Maschinenfabrik Korfmann GmbH | Chaîne à haver pour une machine à couper des pierres |
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 |
ITRM990002U1 (it) * | 1999-01-12 | 2000-07-12 | Fantini Sud Srl | Dentatura di taglio di tipo universale, con placchette prismatiche a stella. |
BE1019003A3 (fr) * | 2009-11-19 | 2011-12-06 | Pmds Sa Nv | Chaine de haveuse et haveuse. |
-
2010
- 2010-09-06 BE BE2010/0521A patent/BE1019468A3/fr active
-
2011
- 2011-09-05 EP EP11760735.8A patent/EP2613918B1/fr not_active Not-in-force
- 2011-09-05 PT PT117607358T patent/PT2613918E/pt unknown
- 2011-09-05 WO PCT/EP2011/065302 patent/WO2012032009A1/fr active Application Filing
Non-Patent Citations (1)
Title |
---|
See references of WO2012032009A1 * |
Also Published As
Publication number | Publication date |
---|---|
BE1019468A3 (fr) | 2012-07-03 |
EP2613918B1 (fr) | 2015-03-11 |
WO2012032009A1 (fr) | 2012-03-15 |
PT2613918E (pt) | 2015-08-21 |
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