CN1930370B - Rotary cutting bit and method for mining using same - Google Patents
Rotary cutting bit and method for mining using same Download PDFInfo
- Publication number
- CN1930370B CN1930370B CN2005800071383A CN200580007138A CN1930370B CN 1930370 B CN1930370 B CN 1930370B CN 2005800071383 A CN2005800071383 A CN 2005800071383A CN 200580007138 A CN200580007138 A CN 200580007138A CN 1930370 B CN1930370 B CN 1930370B
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- China
- Prior art keywords
- handle
- pick
- shoulder
- sleeve
- cutting tip
- Prior art date
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- 238000005520 cutting process Methods 0.000 title claims abstract description 117
- 238000000034 method Methods 0.000 title claims abstract description 35
- 238000005065 mining Methods 0.000 title claims abstract description 19
- 239000000463 material Substances 0.000 claims abstract description 84
- 229910000831 Steel Inorganic materials 0.000 claims description 18
- 239000010959 steel Substances 0.000 claims description 18
- 230000008569 process Effects 0.000 claims description 16
- UONOETXJSWQNOL-UHFFFAOYSA-N tungsten carbide Chemical compound [W+]#[C-] UONOETXJSWQNOL-UHFFFAOYSA-N 0.000 claims description 13
- 239000000428 dust Substances 0.000 claims description 11
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 8
- 238000005219 brazing Methods 0.000 claims description 5
- 229910000679 solder Inorganic materials 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000009412 basement excavation Methods 0.000 abstract description 2
- 239000002131 composite material Substances 0.000 abstract description 2
- 230000004224 protection Effects 0.000 description 6
- 239000003245 coal Substances 0.000 description 5
- 229910001369 Brass Inorganic materials 0.000 description 4
- 230000004323 axial length Effects 0.000 description 4
- 239000010951 brass Substances 0.000 description 4
- 239000012634 fragment Substances 0.000 description 4
- 210000001138 tear Anatomy 0.000 description 4
- 238000005299 abrasion Methods 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 3
- 239000000654 additive Substances 0.000 description 3
- 230000000996 additive effect Effects 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 229910003460 diamond Inorganic materials 0.000 description 3
- 239000010432 diamond Substances 0.000 description 3
- 229910052582 BN Inorganic materials 0.000 description 2
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 2
- 229910010271 silicon carbide Inorganic materials 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- NRTOMJZYCJJWKI-UHFFFAOYSA-N Titanium nitride Chemical class [Ti]#N NRTOMJZYCJJWKI-UHFFFAOYSA-N 0.000 description 1
- 229910001315 Tool steel Inorganic materials 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000002817 coal dust Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 230000004807 localization Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
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
- 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
Abstract
The present invention relates to a cutting pick used for mining and excavation purposes and a method of using a cutting pick for mining. The cutting pick comprises an elongate shank (10), a cutting tip (11) fixed to one end of the shank to project from that end and which is of a material that is harder than the material of the shank (10), and a composite sleeve (31) formed of a plurality of annular sleeve portions (32) which are attached about the shank (10) adjacent the cutting tip and immediately adjacent to each other. The sleeve portions (32) are of a material which is harder than the material of the shank and which has a lower propensity for incendive spark production during a cutting operation than the material of the shank (10).
Description
Technical field
The present invention relates to be used to dig up mine and excavate the cutting element of purpose.The present invention mainly develops the exploitation that is used for coal and in use is used in underground coal mining usually.Therefore use at this that to describe the present invention very convenient, but be readily appreciated that, the present invention also can be used in any mining or dredge operation that it can suitably play a role.
Background technology
Multiple multi-form equipment and machine can be used for mining and dredge operation, and dig up mine usually or the type decided in the type excavated and the soil just being exploited or excavating suitable equipment or the type of machine.It is that the mining of the type relates to fire and the blast in the mine that the present invention relates generally to one of underground coal mine exploitation and the main safety difficulty in the mining of the type.These situations be that they are blocked in the mine and are easy to and light owing to can generate methane gas and coal dust (being commonly called mine dust) in mining process.Unfriendly, the equipment that is used for coal mining can generate incendive sparks and therefore cause fire or blast.Therefore, it is highly important that and take all adequate measures that the generation of spark is minimized or eliminates.
Be used for comprising rotary cutter, a plurality of outstanding cutter tips or the cylinder and the ground engagement of pick wherein are installed at the equipment of hard place mining or excavation.The pick ground of when they rotate with tube, nipping, thus earth impacted and from surface removal or smash earth.The joint that this height between pick and the ground is invaded can cause generating spark between them.
The pick of Shi Yonging has hard cemented tungsten carbide tip usually for this reason, is fixed on the steel handle by solder brazing usually.Disclose this class pick in different prior aries, for example U.S. Patent No. 6,113, and 195, EP0274645 and DE4226976.The tip of pick can be blade or cap style.
Shown the blade type tip among the DE4226976, wherein be anchored in the hole of handle than the more most axial length of the part that from the hole, extends out in the tip.Shown the cap style tip among the EP0274645, wherein most advanced and sophisticated have than the wideer base in blade type tip and base setting and be brazed in the groove more shallow relatively in the handle front end.The present invention is suitable for any in the pick in these forms.
In the pick of the above-mentioned type, can generate spark between tungsten carbide tip and the ground and between steel handle and ground, but more may between handle and ground, generate spark usually.
Summary of the invention
An object of the present invention is to provide a kind of pick, it can be reduced in the possibility that mining or dredge operation especially generate spark in the underground coal mine recovery process.
According to the present invention, a kind of pick is provided, comprising:
Elongated handle;
Cutting tip, an end that is fixed to handle is to stretch out from this end and the material of cutting tip is stiffer than the material of handle; And
The combined sleeve that forms by a plurality of annulus portion, annulus portion connects and tight each other adjacency around the handle in abutting connection with cutting tip, and the material of sleeve part is stiffer than the material of handle and has the tendency of lower generation incendive sparks than the material of handle in the cutting operation process.
The present invention also provides a kind of pick, comprises;
Elongated steel handle;
Cutting tip is fixed on the cylindrical end portion of handle axially to stretch out with respect to the longitudinal axis of handle from this end and its material is stiffer than the material of handle; And
Combined sleeve, formed by a plurality of annulus portion, annulus portion connects around cylindrical end portion axially to press relation, extends on the whole height of this part substantially, its material is stiffer than the material of handle, and has the tendency of lower generation incendive sparks during cutting operation than steel handle.
The present invention also provides a kind of method of using cutting pick for mining, and described pick comprises elongated handle; Cutting tip, an end that is fixed to handle is to stretch out from this end and the material of cutting tip is stiffer than the material of handle; With the combined sleeve that forms by a plurality of annulus portion, annulus portion connects and tight each other adjacency around the handle in abutting connection with cutting tip, the material of sleeve part is stiffer than the material of handle and has the tendency of lower generation incendive sparks than the material of handle in the cutting operation process, and this method is included in the step of digging up mine in the environment of air inclusion and/or mine dust.
The present invention also provides a kind of method of using cutting pick for mining, and described pick comprises:
Elongated steel handle;
Cutting tip is fixed on the cylindrical end portion of handle axially to stretch out with respect to the longitudinal axis of handle from this end and its material is stiffer than the material of handle; And
Combined sleeve, form by a plurality of annulus portion, annulus portion connects around cylindrical end portion axially to press relation, on the whole height of this part, extend substantially, its material is stiffer than the material of handle, and have the tendency of lower generation incendive sparks during cutting operation than steel handle, this method is included in the step of digging up mine in the environment of air inclusion and/or mine dust.
In addition, the invention provides a kind of pick, comprising:
Elongated handle;
Cutting tip, an end that is fixed to handle is to stretch out from this end and the material of cutting tip is stiffer than the material of handle; And
Described elongated handle comprises cylindrical part, and cylindrical part has in abutting connection with first end of cutting tip and axial second end of separating and terminate in shoulder away from cutting tip;
Annulus connects around the cylindrical part of handle, annulus is supported on the axle head of shoulder, and but another axle head extends towards first end of cylindrical part terminates in before it, the cylindrical portion of cylindrical part just keeps exposing like this, and the material of sleeve is stiffer than the material of handle and has the tendency of lower generation incendive sparks than the material of handle in the cutting operation process.
In addition, the invention provides a kind of method of using cutting pick for mining, described pick comprises:
Elongated handle;
Cutting tip, an end that is fixed to handle is to stretch out from this end and the material of cutting tip is stiffer than the material of handle; And
Described elongated handle comprises cylindrical part, and cylindrical part has in abutting connection with first end of cutting tip and axial second end of separating and terminate in shoulder away from cutting tip;
Annulus connects around the cylindrical part of handle, annulus is supported on the axle head of shoulder, and another axle head is before first end of cylindrical part extends and terminates in it, the cylindrical portion of cylindrical part just keeps exposing like this, the material of sleeve is stiffer than the material of handle, and have the tendency of the generation incendive sparks lower than the material of handle in the cutting operation process, described method is included in the step of digging up mine in the environment of air inclusion and/or mine dust.
By around the handle branch sleeve, just can protect near the part that is right after in the handle cutting tip to avoid contacting with anti-spark material, the ground that the common most probable contact of this part is cut or the fragment in the soil of removing from ground, thus generate incendive sparks.Therefore reduced the tendency that spark generates.
In according to pick of the present invention, elongated handle can be taked any suitable form, and known form for example is for fixing to the cutting roll of rotation.Handle releasably is fixed to tube usually, so just can replace the cutting pick of wearing and tearing as required, and in some machines, handle can be installed rotatably, and pick just can freely rotate around its longitudinal axis with ground engagement the time like this.Handle is made by steel usually.
In according to pick of the present invention, handle can be configured to receive the cutting tip of blade type or the cutting tip of cap style.
In according to pick of the present invention, cutting tip can be by any suitable material manufacturing harder than the material of handle, and the cutting tip material is preferably cemented tungsten carbide.Most advanced and sophisticated also can diamond impregnated can comprise maybe that to improve hardness cubic boron nitride is to be used for identical purpose.Cutting tip can have any suitable shape, this depend on usually the tip be blade type or cap style.Cutting tip is brazed on the handle usually, though can use fixing other most advanced and sophisticated configuration, for example passes through chemical adhesive.
Around the sleeve that connects in abutting connection with the handle of cutting tip preferably by forming with the cutting tip identical materials and this material is preferably cemented tungsten carbide.Perhaps material can be or comprise SiC, A1
2O
3, tin, SiC-D (silicon carbide diamond composite), cubic boron nitride, tool steel or other similar material.These materials can form synthetic materials with other suitable material, and perhaps they can be provided as the layer of skin or suitable base top.
In the typical pick of pick, the axial height of sleeve can be in about 10 millimeters to 15 millimeters zone, and the radial thickness of sleeve between internal diameter and external diameter is approximately 3 millimeters to 5 millimeters.There are some difficulties in the sleeve of these sizes that generate with tungsten carbide, so the present invention points out, sleeve can be generated as the combined sleeve that the sleeve part that reduces height or ring form, and the axial height of sleeve part or ring for example is approximately 4 millimeters.Therefore these parts can be connected on the handle to form the combined sleeve of desired height.In preferred disposition, used three sleeve parts, but also can use two sleeve parts or four or more sleeves as required.In preferred disposition, each sleeve part has identical internal diameter and external diameter, and preferably inner surface is parallel with external surface, but external surface can comprise that bevel edge or a plurality of bevel edge are to reduce the possibility of sharp limit fracture.
For the sleeve that is formed by a part, the difficulty of expection relates generally to when sleeve is connected to handle the difference between the coefficient of expansion between the sleeve and handle.As the material of carpopodium is that the material of steel and sleeve is a tungsten carbide, and handle will expand when steel heats, and after shrink because the speed of steel cooling approximately is the twice of sleeve.The difference of contraction rate can import stress in sleeve, if sleeve is more frangible and stress is enough big than handle usually, sleeve can split.If type of service is a plurality of shanks of ring, reduce contact area between handle and the combined sleeve by the disconnection between the ring so.This is can and encircle between self and extend between ring and handle because of the medium that ring is fixed to handle.Medium is as described below, is preferably brass, can absorb some induced stresses and therefore reduce the possibility that sleeve lost efficacy.This has additional benefit, and promptly combined sleeve can be harder or strong than integral sleeve, so also can be reduced in the possibility of wearing and tearing or losing efficacy under the live load.
In the preferred form according to pick of the present invention, handle has defined shoulder being generally between conical part and the cylindrical part.Tapered segment is assembled towards cylindrical part, and cylindrical part has defined the groove of the base portion that is used to receive cutting tip.This reception can constitute blade or cap style picks.In this configuration, sleeve is connected on the handle and is supported on the shoulder around cylindrical part.Advantageously, this configuration provide sleeve on handle accurate localization and a surface is provided, sleeve can rely on the shock loading in this surface resistance cutting operation process.
If will reduce the possibility that annulus ruptures in the cutting operation process, the cylindrical portion that can be placed to cylindrical part with the part of the base adjacency of cutting tip in the sleeve keeps exposing.Preferably, when axially measuring, the length of exposure and is most preferably about 3 millimeters in 1 millimeter to 5 millimeters zone.Expose portion therefore less relatively and preferred diameter is not more than the outermost diameter of cutting tip at the cutting tip base area.Because only the cylindrical part of fraction exposes, so the possibility that this part engages with cutting surface in the cutting operation process is just very low.Expose portion may be in the cutting tip " wear shadow ", and this is the part in the pick, because it closes on cutting tip, so the wearing and tearing minimum that is subjected to maybe can be ignored.The wearing and tearing of pick more may occur in more on the position away from cutting tip.The pick that may the wear and tear part that partly to be those obviously contact with cutting surface more, and these parts more may be sent spark when coming in contact.
Away from cutting tip location annulus, sleeve is just placing more circlet border of destructiveness in the cutting operation process with regard to the shock loading that can cause sleeve breakage by more.On the other hand, by sleeve being placed the overlap-add region of pick, can reduce the generation of spark, and the guard circle cylindrical section avoids wearing and tearing in the significant cutting surface contact of cutting operation process.
In preferred disposition, wherein handle is formed by steel and sleeve is formed by tungsten carbide, and sleeve is solder brazing with the preferred form that is connected of handle.Sleeve comprises among the embodiment of a plurality of sleeve parts therein, and preferably each part is brazed on the handle individually and is brazed to each other and goes up.Advantageously, the brass that inserts between sleeve part and the handle can be absorbed in the stress that occurs in the heating and cooling process of pick.During heating and cooling, sleeve part and handle can expand and shrink, but owing to the difference in the relative expansion coefficient causes expanding different with shrinkage factor.Brass also can provide in the cutting operation process impact absorption to a certain degree.Should be pointed out that the brass expectation is provided between the sleeve part and sleeve part and handle of adjacency, so also can take place in abutting connection with stress absorption between the sleeve part and impact absorption.
Although tungsten carbide is the preferred material that is used for sleeve, other material material for example discussed above is suitable equally.Equally, material can comprise additive, and additive can strengthen the resistance that generates incendive sparks, or improves the abrasive resistance of sleeve.In this one side, sleeve for example can strengthen by adding diamond particles in the back.Other additive of the above-mentioned type is suitable equally.Perhaps, material can be the compound of basic unit (base), and it has the suitable outer or a plurality of skins of coating on it, and is most preferred to this titanium nitride.
Should be appreciated that above-mentioned discussion relates generally to the generation that reduces or eliminates incendive sparks during pick and the ground engagement.Main target consequently of the present invention, slave side of the present invention provides wear-resisting handle.Handle is formed by steel, be easy to wear and tear along with the past of time, and common situation is that the steel handle weares and teares quickly than hard cutting tip, and pick must get earlier than hope and replace like this, promptly before pick fully weares and teares.In other words, the wearing and tearing of handle can reduce the useful life of pick.The wearing and tearing of pick usually occur in tight proximity in abutting connection with cutting tip in the handle.Therefore, by suitable selection bush material, the steel handle that just can protect proximity avoids engaging with ground or fragment, and this joint can cause its wearing and tearing, the therefore life-span that can improve pick.Bush material is chosen as identical or equivalent, can provides the abrasion resistance of usefulness for this reason with the material of cutting tip.
The present invention also provides the pick that uses in any the above-mentioned type in the many methods of digging up mine of the environment of air inclusion and/or mine dust.
Description of drawings
By the following specific embodiment and accompanying drawing, other objects, features and characteristic of the present invention will be apparent, and the specific embodiment and accompanying drawing are as just limiting examples, and they form the part of manual, wherein, identical reference number is indicated corresponding part among the different figure.
Fig. 1 is the lateral view of the handle of rotary cutting bit;
Fig. 2 is the lateral view that is used for being connected to the tungsten carbide tip on the handle of Fig. 1;
Fig. 3 is the lateral view according to pick of the present invention;
Fig. 4 is the lateral view according to the optional embodiment of pick of the present invention.
The specific embodiment
Fig. 1 and 2 has shown the handle 10 of pick respectively and has been shaped to be connected to the tungsten carbide tip 11 on the handle 10.Handle 10 comprises main part 12, and main part 12 at one end comprises flange 13 and have groove 14 away from flange 13 places that flange 13 and groove 14 cooperate so that pick is fixed to cylinder with the rotary cutting cylinder by this.The mode that handle 10 is fixed to cylinder is known for those skilled in the art, is not therefore further describing and is showing at this.
By apparent among Fig. 1, when cutting tip 11 is fixed on the handle 10, outside each in the external surface of outer cylinder 22, first shoulder 17 and tapered segment 15 all keeps being exposed to.Therefore, these surfaces can contact with the ground that is cut, or have the fragment of removing from ground.This engagement can cause generating easily right spark, has significantly potential dangerous consequences.Maximum in the part of possibility contiguous cutting tip 11 in handle 10 of generation spark, and reduce towards the opposite end of handle 10.
Fig. 3 has shown embodiments of the invention, has wherein reduced the possibility that spark generates.The pick 30 of Fig. 3 uses handle 10 and the cutting tip 11 among Fig. 1 and Fig. 2, therefore in Fig. 3, use with these figure in identical reference number.
In Fig. 3, by three identical sleeve parts or encircle 32 combined sleeves that form 31 and arrange around the outer cylinder 22 (Fig. 1) of cylindrical part 16.Annular 32 forms independently of one another, and with the cooperation of sliding fit or friction slightly around cylindrical part 16 assemblings, and be brazed on the external surface 22, and be also brazed on first shoulder 17 at a distance of farthest ring 32 with cutting tip 11.As shown in the figure, ring 32 external surfaces 22 for cylindrical part 16 provide complete substantially protection, only a small amount of cylindrical portion of cylindrical part 16 surpass with cutting tip 11 the next-door neighbour ring 32 and axially as seen.This part is designated reference number 33 and is the fixing part of the flange 20 of cutting tip 11 in the cylindrical part 16.Cylindrical portion 33 for encircle 32 especially the ring 32 of topmost some protections are provided, avoid the impact of the ground fragment that is subjected in cutting operation, removing, so just can reduce significantly and encircle 32 possibilities that rupture of the ring of topmost especially.The axial height of the cylindrical portion that exposes can be in 1 millimeter to 5 millimeters zone, in that most preferably it is approximately 3 millimeters.
As can be seen from Figure 3, each ring 32 has along the direction of cutting tip 11 and is applied to the chamfering of the axis of guide to edge.
It is also understood that in addition, the axial length of sleeve 31 can be along extending towards the direction of flange 13, and for this reason, the tapered segment 15 of handle 10 can merogenesis so that another serial shoulder to be provided, or only another sleeve is connected to the external surface of tapered segment 15.The necessity that continues the sleeve protection towards flange 13 depends on the possibility that generates incendive sparks in first shoulder, 17 back.Existing view points out, with respect to pick 30,30 ' remainder, the very big reduction of the potential of sleeve 31 or 31 ' realizations generation incendive sparks that can be by having the approx. dimension that shows respectively among Fig. 3 and Fig. 4.
Should be appreciated that the material by suitable selection sleeve 31, sleeve 31 can also provide abrasion protection to the cylindrical part 16 of handle 10.Although abrasion protection is not its major function, advantageously, this miscellaneous function can significantly improve the life-span of pick.When in addition, the present invention reduces effect that spark generates and only occurs over just sleeve and be kept perfectly.That is, if the sleeve wearing and tearing, advantage of the present invention will lose.Therefore, preferred sleeve can be resisted wearing and tearing in the life expectancy of pick.
Referring now to Fig. 4,, this figure be according to pick 30 of the present invention ' optional embodiment, wherein reduced the possibility that spark generates.Main part 12 among the pick 30 of Fig. 4 ' use Fig. 3, therefore in Fig. 4, use with these figure in identical reference number.
In Fig. 4, by the combined sleeve 31 of three sleeve parts 32,32 ' form ' around first cylindrical part 16 and second cylindrical part 16 ' outer cylinder arrange.Each annular 32,32 ' be formed separated from each other, and is brazed on the external surface around cylindrical part 16,16 ' assembling with the cooperation of sliding fit or friction slightly.Ring two in 32, cylindrical part 16 and first shoulder 17 are with disclosed identical in Fig. 3 before this.Be also brazed on first shoulder 17 at a distance of farthest a ring with cutting tip 11 in the ring 32.The 3rd additional ring 32 ' be also brazed to second shoulder 17 ' on.Cylindrical part 16 ', second shoulder 17 ' and encircle 32 ' size greater than the size of corresponding part 16,17 and 32.As shown in the figure, the ring 32,32 ' for cylindrical part 16,16 ' external surface complete substantially protection is provided.Therefore, the handle 10 of the above-mentioned type ' defined second shoulder 17 ', second shoulder 17 ' with first shoulder along separate with first shoulder 17 away from the direction of cutting tip 11, and in this configuration, second sleeve 32 ' around the handle connection with first shoulder 17 and second shoulder 17 ' between extension.Like this, just can protect another part of handle to avoid contacting with ground and up to the present having reduced the risk that generates incendive sparks.
In the configuration of Tao Luning, annulus also can be supported on the axle head of first shoulder 17 in the above, and but another axle head extends towards first end of cylindrical part 16 terminates in before it, and the cylindrical portion of cylindrical part just keeps exposure like this.
If necessary, provide the configuration discussed above of second shoulder to repeat therein, thereby generated the 3rd shoulder and Geng Duo shoulder as required.Therefore, by this configuration, can protect the ever-increasing axial length of handle.
In the above in the configuration of Tao Luning, when more than one shoulder was provided, preferably the shank between each shoulder was columniform and each part increases diameter along the direction away from cutting tip.
The present invention described here can also change, improves and/or augment except that the special situation of describing, and should be appreciated that all these variations of the present invention includes the scope that falls into following claim, improves and/or augment.
Claims (27)
1. pick comprises:
Elongated handle;
Cutting tip (11), an end that is fixed to handle is to stretch out from this end and the material of cutting tip is stiffer than the material of handle; And
The combined sleeve (31 that forms by a plurality of annulus portion; 31 '), they connect in abutting connection with cutting tip (11) around handle and tight each other adjacency, and the material of sleeve part is stiffer than the material of handle and has the tendency of lower generation incendive sparks than the material of handle in the cutting operation process.
2. pick as claimed in claim 1 is characterized in that, described sleeve part is by forming with cutting tip (11) identical materials.
3. pick as claimed in claim 1 or 2 is characterized in that described sleeve part is made of tungsten carbide.
4. as each the described pick in the claim 1 to 2, it is characterized in that three sleeve parts are arranged.
5. as each the described pick in the claim 1 to 2, it is characterized in that each sleeve part has identical internal diameter and external diameter.
6. as each the described pick in the claim 1 to 2, it is characterized in that handle has defined shoulder (17; 17 '), shoulder (17; 17 ') substantially perpendicular to the longitudinal axis of handle at conical part (15) and cylindrical part (16; 16 ') between extend, tapered segment (15) is towards cylindrical part (16; 16 ') assemble and described cylindrical part has defined the groove (18) of the base portion that is used to receive cutting tip (11), sleeve part is connected on the handle and one of sleeve part is supported on shoulder (17 around cylindrical part; 17 ') on.
7. pick as claimed in claim 6 is characterized in that, described sleeve part is columniform generally.
8. pick as claimed in claim 6, it is characterized in that, described handle has defined second shoulder (17 '), second shoulder (17 ') is along axially separate with first shoulder (17) away from the direction of cutting tip (11) and extend perpendicular to the longitudinal axis of handle substantially, and one or more sleeve part is around handle connection and extension between first shoulder (17) and second shoulder (17 ').
9. pick as claimed in claim 8, it is characterized in that, described handle has second cylindrical part (16 '), second cylindrical part (16 ') be positioned between first shoulder (17) and second shoulder (17 ') and its diameter greater than the diameter of first cylindrical part (16) that extends away from second shoulder from first shoulder.
10. as each the described pick in the claim 1 to 2, it is characterized in that described sleeve part connects around handle by solder brazing.
11. a pick comprises:
The elongate steel handle;
Cutting tip (11) is fixed on the cylindrical end portion of handle axially to stretch out with respect to the longitudinal axis of handle from this end and its material is stiffer than the material of handle; And
Combined sleeve (31; 31 '), formed by a plurality of annulus portion, annulus portion connects around cylindrical end portion axially to press relation, extends on the whole height of this part substantially, its material is stiffer than the material of handle, and has the tendency of lower generation incendive sparks during cutting operation than steel handle.
12. pick as claimed in claim 11 is characterized in that, three sleeve parts are arranged.
13. a method of using cutting pick for mining, described pick comprises elongated handle; Cutting tip (11), an end that is fixed to handle is to stretch out from this end and the material of cutting tip is stiffer than the material of handle; With the combined sleeve (31 that forms by a plurality of annulus portion; 31 '), annulus portion connects and tight each other adjacency around the handle in abutting connection with cutting tip (11), the material of sleeve part is stiffer than the material of handle and has the tendency of lower generation incendive sparks than the material of handle in the cutting operation process, and this method is included in the step of digging up mine in the environment of air inclusion and/or mine dust.
14. method as claimed in claim 13 is characterized in that, the environment of described air inclusion and/or mine dust comprises methane gas.
15. a method of using cutting pick for mining, described pick comprises:
Elongated steel handle;
Cutting tip (11) is fixed on the cylindrical end portion of handle axially to stretch out with respect to the longitudinal axis of handle from this end and its material is stiffer than the material of handle; And
Combined sleeve (31; 31 '), form by a plurality of annulus portion, annulus portion connects around cylindrical end portion axially to press relation, on the whole height of this part, extend substantially, its material is stiffer than the material of handle, and have the tendency of lower generation incendive sparks during cutting operation than steel handle, this method is included in the step of digging up mine in the environment of air inclusion and/or mine dust.
16. method as claimed in claim 15 is characterized in that, the environment of described air inclusion and/or mine dust comprises methane gas.
17. a pick comprises:
Elongated handle;
Cutting tip (11), an end that is fixed to handle is to stretch out from this end and the material of cutting tip is stiffer than the material of handle; And
Described elongated handle comprises cylindrical part (16), and cylindrical part (16) has in abutting connection with first end of cutting tip (11) and axially separates and terminate in second end of first shoulder (17) away from cutting tip (11);
Center on the annulus (31 of cylindrical part (16) connection of handle; 31 '), annulus is supported on the axle head of first shoulder, and another axle head is before the first end of cylindrical part (16) extends and terminates in it, the cylindrical portion of cylindrical part (33) just keeps exposing like this, and the material of sleeve is stiffer than the material of handle and has the tendency of lower generation incendive sparks than the material of handle in the cutting operation process.
18. pick as claimed in claim 17 is characterized in that, described sleeve (31; 31 ') by constituting with cutting tip (11) identical materials.
19., it is characterized in that described sleeve (31 as claim 17 or 18 described picks; 31 ') constitute by tungsten carbide.
20. each the described pick as in the claim 17 to 18 is characterized in that, described sleeve (31; 31 ') comprising a plurality of annulus portion, described annulus portion is around cylindrical part (16; 16 ') closely connect in abutting connection with ground each other.
21. pick as claimed in claim 20 is characterized in that, described sleeve comprises three sleeve parts.
22. pick as claimed in claim 20 is characterized in that, each sleeve part has identical internal diameter and external diameter.
23. as each the described pick in the claim 17 to 18, it is characterized in that, described shoulder (17) extends between conical part (15) and cylindrical part (16), described conical part (15) has defined groove (18) towards cylindrical part (16) convergence and described cylindrical part, and described groove is used to receive the base portion of cutting tip (11).
24. as each the described pick in the claim 17 to 18, it is characterized in that, described handle has defined second shoulder (17 '), second shoulder (17 ') is along axially separate with first shoulder (17) away from the direction of cutting tip (11) and extend perpendicular to the longitudinal axis of handle substantially, and second sleeve is around handle connection and extension between first shoulder (17) and second shoulder (17 ').
25. pick as claimed in claim 24, it is characterized in that, described handle between first shoulder (17) and second shoulder (17 '), be columniform and its diameter greater than the diameter of the cylindrical part away from second shoulder (17 ') (16) that extends from first shoulder (17).
26. a method of using cutting pick for mining, described pick comprises:
Elongated handle;
Cutting tip (11), an end that is fixed to handle is to stretch out from this end and the material of cutting tip is stiffer than the material of handle; And
Described elongated handle comprises cylindrical part (16), and cylindrical part (16) has in abutting connection with first end of cutting tip (11) and axially separates and terminate in second end of first shoulder (17) away from cutting tip;
Annulus connects around the cylindrical part (16) of handle, annulus is supported on the axle head of first shoulder (17), and another axle head is before the first end of cylindrical part (16) extends and terminates in it, the cylindrical portion of cylindrical part (33) just keeps exposing like this, the material of sleeve is stiffer than the material of handle, and have the tendency of the generation incendive sparks lower than the material of handle in the cutting operation process, described method is included in the step of digging up mine in the environment of air inclusion and/or mine dust.
27. method as claimed in claim 26 is characterized in that, the environment of described air inclusion and/or mine dust comprises methane gas.
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU2004201284A AU2004201284B2 (en) | 2004-03-26 | 2004-03-26 | Rotary cutting bit |
| AU201284/04 | 2004-03-26 | ||
| US10/845,556 | 2004-05-14 | ||
| US10/845,556 US7172256B2 (en) | 2004-03-26 | 2004-05-14 | Rotary cutting bit having spark suppression sleeve |
| PCT/SE2005/000431 WO2005093214A1 (en) | 2004-03-26 | 2005-03-23 | Rotary cutting bit |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910209702XA Division CN101684730B (en) | 2004-03-26 | 2005-03-23 | Rotary cutting bit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1930370A CN1930370A (en) | 2007-03-14 |
| CN1930370B true CN1930370B (en) | 2011-08-17 |
Family
ID=37398466
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2005800071383A Expired - Fee Related CN1930370B (en) | 2004-03-26 | 2005-03-23 | Rotary cutting bit and method for mining using same |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP1733120B1 (en) |
| CN (1) | CN1930370B (en) |
| CA (1) | CA2554654C (en) |
| PL (1) | PL1733120T3 (en) |
| WO (1) | WO2005093214A1 (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB201000869D0 (en) * | 2010-01-20 | 2010-03-10 | Element Six Holding Gmbh | Superhard pick tool and method for making same |
| US9028009B2 (en) | 2010-01-20 | 2015-05-12 | Element Six Gmbh | Pick tool and method for making same |
| CN102200012A (en) * | 2010-03-26 | 2011-09-28 | 钴碳化钨硬质合金公司 | Holder for rotary cutter head |
| AU2010206065B1 (en) * | 2010-07-30 | 2011-10-27 | Sandvik Intellectual Property Ab | Metal matrix pick |
| EP2601356A1 (en) * | 2010-08-02 | 2013-06-12 | Sandvik Intellectual Property Ab | Rotatable grading pick with debris clearing feature, a tool and block assembly and a road grading machine |
| DE102011054393A1 (en) * | 2011-10-11 | 2013-04-11 | Betek Gmbh & Co. Kg | shank bits |
| US9593577B2 (en) | 2012-09-28 | 2017-03-14 | Element Six Gmbh | Pick tool having a super-hard planar strike surface |
| GB201220294D0 (en) * | 2012-11-12 | 2012-12-26 | Element Six Gmbh | Pick tool assembly and method of using same |
| US20170254201A1 (en) * | 2014-10-17 | 2017-09-07 | Vermeer Manufacturing Company | Protective wear sleeve for cutting element |
| CN106593439A (en) * | 2016-11-30 | 2017-04-26 | 安徽省皖江机电设备制造有限公司 | High-abrasion-resistance and high-impact-resistance mining cutting teeth and machining method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5417475A (en) * | 1992-08-19 | 1995-05-23 | Sandvik Ab | Tool comprised of a holder body and a hard insert and method of using same |
| US5823632A (en) * | 1996-06-13 | 1998-10-20 | Burkett; Kenneth H. | Self-sharpening nosepiece with skirt for attack tools |
| CN1204381A (en) * | 1995-12-13 | 1999-01-06 | 钴碳化钨硬质合金公司 | Cutting tool sleeve rotation limitation system |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE8533058U1 (en) * | 1985-11-23 | 1987-03-26 | Belzer-Dowidat Gmbh Werkzeug-Union, 5600 Wuppertal, De | |
| US5837071A (en) * | 1993-11-03 | 1998-11-17 | Sandvik Ab | Diamond coated cutting tool insert and method of making same |
| US6709065B2 (en) * | 2002-01-30 | 2004-03-23 | Sandvik Ab | Rotary cutting bit with material-deflecting ledge |
-
2005
- 2005-03-23 EP EP05728094A patent/EP1733120B1/en not_active Not-in-force
- 2005-03-23 PL PL05728094T patent/PL1733120T3/en unknown
- 2005-03-23 WO PCT/SE2005/000431 patent/WO2005093214A1/en active Application Filing
- 2005-03-23 CA CA2554654A patent/CA2554654C/en not_active Expired - Fee Related
- 2005-03-23 CN CN2005800071383A patent/CN1930370B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5417475A (en) * | 1992-08-19 | 1995-05-23 | Sandvik Ab | Tool comprised of a holder body and a hard insert and method of using same |
| CN1204381A (en) * | 1995-12-13 | 1999-01-06 | 钴碳化钨硬质合金公司 | Cutting tool sleeve rotation limitation system |
| US5823632A (en) * | 1996-06-13 | 1998-10-20 | Burkett; Kenneth H. | Self-sharpening nosepiece with skirt for attack tools |
Non-Patent Citations (1)
| Title |
|---|
| CN 1204381 A,全文. |
Also Published As
| Publication number | Publication date |
|---|---|
| EP1733120A1 (en) | 2006-12-20 |
| CN1930370A (en) | 2007-03-14 |
| PL1733120T3 (en) | 2009-05-29 |
| WO2005093214A1 (en) | 2005-10-06 |
| CA2554654A1 (en) | 2005-10-06 |
| CA2554654C (en) | 2012-11-13 |
| EP1733120B1 (en) | 2008-11-12 |
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| PB01 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
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Granted publication date: 20110817 Termination date: 20180323 |