CN1185192A - Pick holder extraction method and device therefor - Google Patents
Pick holder extraction method and device therefor Download PDFInfo
- Publication number
- CN1185192A CN1185192A CN96193892A CN96193892A CN1185192A CN 1185192 A CN1185192 A CN 1185192A CN 96193892 A CN96193892 A CN 96193892A CN 96193892 A CN96193892 A CN 96193892A CN 1185192 A CN1185192 A CN 1185192A
- Authority
- CN
- China
- Prior art keywords
- handle
- pneumatic pick
- connection structure
- rotary connection
- endoporus
- 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
- 238000000605 extraction Methods 0.000 title claims description 29
- 238000000034 method Methods 0.000 claims description 32
- 230000000295 complement effect Effects 0.000 claims description 7
- 239000000284 extract Substances 0.000 claims description 5
- 238000004140 cleaning Methods 0.000 claims description 4
- 230000008878 coupling Effects 0.000 claims description 2
- 238000010168 coupling process Methods 0.000 claims description 2
- 238000005859 coupling reaction Methods 0.000 claims description 2
- 238000003780 insertion Methods 0.000 claims 1
- 230000037431 insertion Effects 0.000 claims 1
- 239000006228 supernatant Substances 0.000 claims 1
- 230000002093 peripheral effect Effects 0.000 description 7
- 238000012856 packing Methods 0.000 description 3
- 239000003245 coal Substances 0.000 description 2
- 238000005065 mining Methods 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 210000003128 head Anatomy 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 210000001331 nose Anatomy 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK 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
- E21C35/19—Means for fixing picks or holders
- E21C35/197—Means for fixing picks or holders using sleeves, rings or the like, as main fixing elements
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK 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
- E21C35/188—Mining picks; Holders therefor characterised by adaptations to use an extraction tool
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK 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
- E21C35/19—Means for fixing picks or holders
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Drilling And Exploitation, And Mining Machines And Methods (AREA)
- Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
- Transmission Devices (AREA)
- Details Of Rigid Or Semi-Rigid Containers (AREA)
- Portable Power Tools In General (AREA)
Abstract
A pick holder (110) is frictionally seated via a cylindrical barrel (112) in a pick box of a continuous miner. A pick is in operation rotationally located in a bore (114). The bore (114), toward a rear thereof, has an internal, inwardly projecting screw thread (30). When the pick has been removed, the pick holder (110) is extracted from the pick box by screwing a screw threaded shank into the screw thread (30), and applying an extracting force via the shank and the interengaged screw threads to the pick holder (110).
Description
The present invention relates to extract the method for pneumatic pick handle from the pneumatic pick case of cutter-loader cydariform seat; Realize the extraction element of extracting method of the present invention, pneumatic pick handle and extracting tool.
In a kind of cutter-loader, for example in the cutter-loader that Voest Alpime company makes, on the cydariform seat of cutter-loader, several pneumatic pick casees have been arranged by predetermined way.Each pneumatic pick case all has the sleeve of this sealing of end group of dress pneumatic pick handle in, and pneumatic pick also can take out packing into.And the handle of pneumatic pick also be both can pack into pneumatic pick in, also can take out in it, and make pneumatic pick in use can with respect to pneumatic pick and rotate.Pneumatic pick the pneumatic pick case of packing into be by load, the method for friction, interference fit carries out.Pneumatic pick is disassembling, to reach replacement, the purpose of renewing and so on.
The lining, an interior circular groove that in use by the locating ring that blocks the pneumatic pick handle pneumatic pick is loaded on is wherein arranged at used pneumatic pick.(pneumatic pick take out back) pneumatic pick a kind of method of from the pneumatic pick case, taking out be clasp on the handle of extracting tool is expanded enter above-mentioned in circular groove, more described handle is applied lifting force.This power is conducted by the shoulder of circular groove in described, thereby the pneumatic pick handle is taken out in the pneumatic pick case.
Though all generally make in this way, it has two problems at least.The first, the fastness of the location of the clasp of extracting tool in interior circular groove is not good.Sliding phenomenon can take place in internal buckle ring, produces very dissatisfactory so that may be dangerous situation, even may damage equipment.The second, the clasp of extracting tool is wanted the energy distending, makes it to combine with interior circular groove, and this just requires it is compound (not only part) structure, the fabricating cost height.The wearing and tearing of this kind extracting tool are quite fast, do not extract how many times comparatively speaking, will renewing or replacing.
A kind of in addition in the known method, a part that protrudes in outside the pneumatic pick case at the external surface of pneumatic pick handle has a peripheral groove exactly, and this method generally also has the same shortcoming of the sort of method of saying previously.In addition, outside peripheral groove is exposed to down in working order, thereby wearing and tearing can not be played the effect of location rapidly soon.And ledge or head may twist off, make by peripheral groove extract become impossible.
Purpose of the present invention just provides the existing method of a kind of improvement, and those problems that can not be existing method existence are because of disturbing or can reduce at least the extracting method of its puzzlement degree, extraction element, pneumatic pick handle and extracting tool.
According to a first aspect of the invention, provide a kind of method of extracting the pneumatic pick handle from the pneumatic pick case of combine coal mining and cydariform seat.Described method comprises: be provided at interior rotary connection structure in the endoporus of pneumatic pick handle; Be provided on the handle of extracting tool one with the supporting inner rotary syndeton of above-mentioned syndeton; The rotary connection structure of these two complementations is coupled together with relative rotation between the described extracting tool by described pneumatic pick handle; By described handle and the described rotary connection structure that has coupled together to pneumatic pick applying extraction power.
In a method for optimizing, described rotary connection structure can be that screw thread also couples together this supporting rotary connection structure with the method for the turn of the screw.In other method, may only need to twist or rotation.
Described method can comprise: the relative middle position the handle of described extracting tool aligning pneumatic pick handle applies extraction power then.Handle is aimed at the middle position of handle, can described handle be supported on the way realization of mouth with the endoporus of described pneumatic pick handle with very little gap, described handle is supported on described mouthful and endoporus can put a sleeve and carry out with the way that described mouth and endoporus are inserted in very little gap by very little gap on described handle, the way of the diameter of the described handle of also available suitable selection is carried out.
The present invention extends to and is applicable to the extraction element that pneumatic pick is extracted the pneumatic pick case from cutter-loader cydariform seat according to second aspect, and this extraction element comprises interconnected part;
Pneumatic pick is the interior rotary connection structure in the endoporus;
On the handle of extracting tool with the supporting inner rotary syndeton of above-mentioned inward turning syndeton, can pack into the endoporus of pneumatic pick handle of described handle, complementary rotary connection structure can make extraction power put on the pneumatic pick handle by the rotary connection structure that couples together in extracting tool and the use by being rotatably connected relatively.
In a preferred embodiment, the form of rotary connection structure can be can tighten and the screw thread that couples together.In other embodiments, can use the rotary connection structure (for example bayonet socket link) of other kind that only needs stubborn or rotation.
Described internal thread can be located at axially away from the direction air feed pick of the mouth of pneumatic pick handle at pneumatic pick easily the interior circular groove of interior location afterwards on the position of certain distance.
The diameter of internal thread makes the external diameter of screw thread of on the described handle and screw thread complementation endoporus or the major diameter endoporus less than described pneumatic pick handle.
External screw thread on the described handle can improve the guide thread that makes it to have a cleaning internal thread, and it is shaped as the cleaning or the open-top screw thread of screw tap shape.Therefore described guide thread can be very sharp, in other words, becomes knife-edge.In addition, can have one cannelure or vertical passage in the external screw thread at least, in order to discharge the foul that cleans out from internal thread.
Described extraction element preferably also comprises dismountable that be placed in described handle and its external diameter makes it to enter with very little gap the endoporus of pneumatic pick handle, thereby described handle is supported on the clasp or the sleeve of endoporus with very little gap.
Extend to the pneumatic pick handle of the cutter-loader pneumatic pick case that is suitable for packing into according to the 3rd aspect the present invention, described pneumatic pick is in the hole an interior rotary connection structure being arranged within it.
Extend to according to the 4th aspect the present invention and to be applicable to from combine coal mining and pneumatic pick case the pneumatic pick that interior rotary connection structure is arranged in its endoporus the extracting tool that extracts, described extracting tool has a handle, near the place of described handle one end the inner rotary syndeton is being arranged, applying the coupling device of lifting force at local oriented described handle near the other end of described handle.
With reference to accompanying schematic figure the present invention is described with illustrative method below, in the accompanying drawing:
Fig. 1 is the lateral view of embodiment of a kind of common pneumatic pick handle of the prior art that the present invention relates to;
Fig. 2 be the pneumatic pick handle made by the present invention with the corresponding lateral view of Fig. 1;
Fig. 3 is the part schematic side view that proposes the pneumatic pick handle according to the present invention from the pneumatic pick case.
Referring to Fig. 1, a kind of common pneumatic pick handle known or prior art that the present invention relates to totally with label 10 expression.It comprises one through Precision Machining, can be with the method for interference fit pneumatic pick the cylindrical external surface 12 that closely is installed in the hole complementary mutually with it in the pneumatic pick case.
Pneumatic pick has coaxial inner 14 to 10, and its size can make the pneumatic pick handle slip over.At pneumatic pick 10 front end endoporus 14 there is opening 16.
At pneumatic pick 10 rear portion endoporus 14 is enlarged, chap gradually forms tapered channel 26, leads to pneumatic pick 10 rear end 24.
From endoporus 14 backward, but from the beginning of tapered channel 26 part still have some place at interval have in circular groove 18, the distensible locating ring of pneumatic pick promptly is installed in this groove, thereby pneumatic pick axially is defined in pneumatic pick in 10, and allows that the pneumatic pick pick of following the wind rotates freely comparatively speaking to 10.
Pneumatic pick when taking out in 10, can penetrate endoporus 14 from pneumatic pick with the handle of extracting tool, make expandable clasp distending and seat go in the circular groove 18, and the handle of extracting tool is applied extraction power just pneumatic pick can be proposed 10 in the pneumatic pick case.This method has aforesaid two critical defects at least.
Pneumatic pick in use protrudes in 10 front portion outside the pneumatic pick case.Peripheral groove 22 is positioned at this protuberance 20.
The other method that pneumatic pick 10 is extracted in the pneumatic pick case is the collapsible pawl that can be fixed in after a kind of the contraction in the peripheral groove 22.Thereby so just can in the pneumatic pick case, take out it applying extraction power to pneumatic pick by this collapsible pawl.As mentioned above, this method has the same shortcoming of method with circular groove in using.In addition, this outer extraction method also has a shortcoming, is exactly the outside that peripheral groove 22 is exposed to the pneumatic pick in the work, thereby will soon may wear to the degree that can not be used to extract.
Referring to Fig. 2, pneumatic pick according to the present invention is totally representing with label 110.All the pneumatic pick with Fig. 1 is identical 10 in many aspects for it, and therefore identical component no longer illustrate.These component use similar label.We here lay stress on pneumatic pick 110 with pneumatic pick 10 different aspect.
At first, pneumatic pick need not peripheral groove to 110 at its protuberance 120 places.Yet it also can have a kind of like this groove, makes the operator that this selection that extracts the pneumatic pick handle with existing method also be arranged.
The place of main difference is that in endoporus 114, there is internal thread 30 in the place of certain distance after interior circular groove 118.Described screw thread 30 accomplishes that thread root diameter is not more than the nominal diameter of endoporus 114 on making.Screw thread 30 is bordering on zigzag.
Fig. 3 has also added label, and wherein label 50 expression extraction elements is overall, and it is used under operational circumstances pneumatic pick being extracted 110 in pneumatic pick case 40.What stress is that Fig. 3 just is used to illustrate the schematic diagram of principle of the present invention.
Be connected the location or the screw thread 56 of hold-doun nut 58 being useful on of handle 52 with screw thread 54 opposite ends.
Hydraulic means 60 stretches, and makes to produce lifting force on handle 52, and this power passes to pneumatic pick 110 by the screw thread 54 and 30 of engagement, and it is extracted from pneumatic pick case 40.
Screw thread 30 can be complementary mutually easily with 54, and can have circular section or saw-tooth shaped cross section.
Those skilled in the art can understand the reliability that extracting method of the present invention and extraction element can slippages, unless can lose efficacy in unusual opposite extreme situations.The applicant thinks that extraction element is simple in structure, thereby makes its fabricating cost less, the fastness height.
The applicant know those skilled in the art all feel for a long time always with pneumatic pick or described this class device to extract from the pneumatic pick case be problematic, dangerous, time-consuming, need relatively more expensive extraction equipment, the applicant believes that quite simply but can solve emerging up to the present invention of being widely known by the people for a long time effectively fails to obtain this problem of fine solution in the present invention.
Claims (14)
1. one kind is extracted the method for pneumatic pick handle from the pneumatic pick case of the cydariform seat of cutter-loader, and described method comprises: the interior rotary connection structure in the endoporus of pneumatic pick handle is provided; Provide on the handle of extracting tool with aforementioned in the supporting inner rotary syndeton of rotary connection structure; The rotary connection structure complementary by pneumatic pick handle and the relative rotation handle between the extracting tool combines; By above-mentioned handle and the rotary connection structure that combined to pneumatic pick applying extraction power.
2. according to the method for claim 1, it is characterized in that: described rotary connection structure is a screw thread, complementary rotary connection structure is combined by they being screwed in together realize.
3. according to the method for claim 1 or 2, it is characterized in that this method comprises, when applying extraction power, the relative middle position of the handle of described extracting tool in alignment with described pneumatic pick handle.
4. according to the method for claim 3, it is characterized in that the described central authorities of aiming at realize mouth or endoporus that described handle is supported on described pneumatic pick handle with very little gap.
5. according to the method for claim 4, it is characterized in that described handle is supported on described mouth or endoporus is to realize by being placed in described handle on every side and with the sleeve of described mouthful of crack insertion or endoporus between very little.
6. one kind is applicable to that pneumatic pick the extraction element that takes out in the pneumatic pick case of cutter-loader cydariform seat, this device comprises:
One is positioned at pneumatic pick the rotary connection structure of endoporus;
On handle that is positioned at extracting tool with the inner rotary syndeton of above-mentioned syndeton complementation, described handle can be contained in the described endoporus of pneumatic pick handle, the rotary connection structure of described complementation can couple together through relative rotation, can make the extraction power that applies in use can act on the pneumatic pick handle through extracting tool and the rotary connection structure that links up.
7. according to the extraction element of claim 6, it is characterized in that described rotary connection structure is a thread-shaped, both can twist altogether with screw thread.
8. according to the extraction element of claim 7, it is characterized in that described internal thread is presented axially in away from pneumatic pick the place that certain distance is arranged after the interior circular groove of the direction of mouth.
9. according to the extraction element of claim 8, it is characterized in that the diameter of described internal thread makes the external diameter of the complementary threads on the described handle or the major diameter endoporus less than the pneumatic pick handle.
10. according to the extraction element of claim 7, its feature is that also it is screw tap shape cleaning both screw or opening line that the external screw thread of described handle is useful on its form of guide thread that cleans internal thread.
11., it is characterized in that described external screw thread has the cannelure or the vertical passage of the usefulness that a foul that goes out for the internal thread supernatant passes through at least according to the extraction element of claim 10.
12. extraction element according to claim 6, it is characterized in that its external diameter can make it to enter pneumatic pick the clasp or the sleeve that described handle are supported on described endoporus with very little gap with very little gap thereby it also has dismountable is placed in around the described handle.
13. a pneumatic pick handle that is suitable for being contained in the cutter-loader pneumatic pick case, described pneumatic pick is in the hole inward turning syndeton being arranged within it.
14. one kind is applicable to that the pneumatic pick that interior rotary connection structure is arranged in the hole within it the extracting tool that extracts, described extracting tool has: a handle from the pneumatic pick case of cutter-loader; End at described handle has the inner rotary syndeton; The other end at described handle has pair handle to apply the coupling apparatus of extraction power.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ZA95/2855 | 1995-04-06 | ||
| ZA952855 | 1995-04-06 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1185192A true CN1185192A (en) | 1998-06-17 |
| CN1053946C CN1053946C (en) | 2000-06-28 |
Family
ID=25584984
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN96193892A Expired - Fee Related CN1053946C (en) | 1995-04-06 | 1996-04-03 | Pick holder extraction method and device therefor |
Country Status (8)
| Country | Link |
|---|---|
| EP (1) | EP0819208B1 (en) |
| CN (1) | CN1053946C (en) |
| AU (1) | AU716518B2 (en) |
| CA (1) | CA2217500A1 (en) |
| DE (1) | DE69621921T2 (en) |
| RU (1) | RU2152516C2 (en) |
| WO (1) | WO1996031682A1 (en) |
| ZA (1) | ZA962371B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE29710357U1 (en) * | 1997-06-13 | 1997-09-04 | Komotzki Michael | Chisel holder with abutment for an extraction tool |
| CN102074663B (en) * | 2010-12-31 | 2013-03-20 | 东莞市龙行航空科技有限公司 | Conveniently-extracted battery |
| EP2514918B1 (en) * | 2011-04-20 | 2015-07-29 | Sandvik Intellectual Property AB | Cutting bit and bit holder |
| PL2851507T3 (en) | 2013-09-19 | 2020-11-02 | Sandvik Intellectual Property Ab | Cutting bit and bit assembly |
| EP2963237A1 (en) | 2014-07-03 | 2016-01-06 | Sandvik Intellectual Property AB | Variable angle cutting bit retaining assembly |
| GB2582863B (en) | 2014-09-15 | 2021-02-24 | Joy Global Underground Mining Llc | Service tool for cutting bit assembly |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU515763B2 (en) * | 1977-04-01 | 1981-04-30 | Hall & Pickles Limited | Mineral cutting pick |
| FR2438739A3 (en) * | 1978-08-24 | 1980-05-09 | Krummenauer Kg H | Tunnel borer tool holder - has flexible bar engaging tangentially in annular groove in tail of tool |
| JPS56112355A (en) * | 1980-02-09 | 1981-09-04 | Toyota Motor Corp | Brake booster |
| GB2072241B (en) * | 1980-03-07 | 1983-07-06 | Hall & Picles Ltd | Pick box |
| GB8333339D0 (en) * | 1983-12-14 | 1984-01-18 | Hall & Pickles Ltd | Mineral cutter pick and box |
| DE8625406U1 (en) * | 1986-09-23 | 1986-11-06 | Geisert Bergtechnik GmbH, 6601 Bübingen | Chisel of a cutting head of a mining machine or jacking machine |
| US5067775A (en) * | 1988-04-21 | 1991-11-26 | Kennametal Inc. | Retainer for rotatable bits |
| US5106166A (en) * | 1990-09-07 | 1992-04-21 | Joy Technologies Inc. | Cutting bit holding apparatus |
| US5374111A (en) * | 1993-04-26 | 1994-12-20 | Kennametal Inc. | Extraction undercut for flanged bits |
| GB9400114D0 (en) * | 1994-01-05 | 1994-03-02 | Minnovation Ltd | Mineral pick box |
| DE102009000065A1 (en) * | 2009-01-08 | 2010-07-15 | Robert Bosch Gmbh | Tool device with a spindle driven by a drive device |
-
1996
- 1996-03-25 ZA ZA962371A patent/ZA962371B/en unknown
- 1996-04-03 RU RU97118424/03A patent/RU2152516C2/en not_active IP Right Cessation
- 1996-04-03 CN CN96193892A patent/CN1053946C/en not_active Expired - Fee Related
- 1996-04-03 CA CA002217500A patent/CA2217500A1/en not_active Abandoned
- 1996-04-03 WO PCT/US1996/004532 patent/WO1996031682A1/en active IP Right Grant
- 1996-04-03 AU AU53268/96A patent/AU716518B2/en not_active Ceased
- 1996-04-03 DE DE69621921T patent/DE69621921T2/en not_active Expired - Lifetime
- 1996-04-03 EP EP96909909A patent/EP0819208B1/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| AU5326896A (en) | 1996-10-23 |
| WO1996031682A1 (en) | 1996-10-10 |
| EP0819208B1 (en) | 2002-06-19 |
| CN1053946C (en) | 2000-06-28 |
| DE69621921D1 (en) | 2002-07-25 |
| RU2152516C2 (en) | 2000-07-10 |
| DE69621921T2 (en) | 2003-01-09 |
| AU716518B2 (en) | 2000-02-24 |
| CA2217500A1 (en) | 1996-10-10 |
| EP0819208A1 (en) | 1998-01-21 |
| ZA962371B (en) | 1996-06-26 |
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |