WO2004097256A1 - Chain remover - Google Patents
Chain remover Download PDFInfo
- Publication number
- WO2004097256A1 WO2004097256A1 PCT/EP2004/003991 EP2004003991W WO2004097256A1 WO 2004097256 A1 WO2004097256 A1 WO 2004097256A1 EP 2004003991 W EP2004003991 W EP 2004003991W WO 2004097256 A1 WO2004097256 A1 WO 2004097256A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- chain
- scraper
- chain scraper
- link
- guide
- Prior art date
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H7/00—Gearings for conveying rotary motion by endless flexible members
- F16H7/18—Means for guiding or supporting belts, ropes, or chains
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F41—WEAPONS
- F41A—FUNCTIONAL FEATURES OR DETAILS COMMON TO BOTH SMALLARMS AND ORDNANCE, e.g. CANNONS; MOUNTINGS FOR SMALLARMS OR ORDNANCE
- F41A9/00—Feeding or loading of ammunition; Magazines; Guiding means for the extracting of cartridges
- F41A9/01—Feeding of unbelted ammunition
- F41A9/04—Feeding of unbelted ammunition using endless-chain belts carrying a plurality of ammunition
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F41—WEAPONS
- F41A—FUNCTIONAL FEATURES OR DETAILS COMMON TO BOTH SMALLARMS AND ORDNANCE, e.g. CANNONS; MOUNTINGS FOR SMALLARMS OR ORDNANCE
- F41A9/00—Feeding or loading of ammunition; Magazines; Guiding means for the extracting of cartridges
- F41A9/61—Magazines
- F41A9/64—Magazines for unbelted ammunition
- F41A9/76—Magazines having an endless-chain conveyor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F41—WEAPONS
- F41A—FUNCTIONAL FEATURES OR DETAILS COMMON TO BOTH SMALLARMS AND ORDNANCE, e.g. CANNONS; MOUNTINGS FOR SMALLARMS OR ORDNANCE
- F41A9/00—Feeding or loading of ammunition; Magazines; Guiding means for the extracting of cartridges
- F41A9/61—Magazines
- F41A9/79—Magazines for belted ammunition
- F41A9/81—Magazines for belted ammunition having provision for collecting belt links or empty cartridge cases
Definitions
- the present invention relates to a chain scraper, which ensures the trouble-free sliding of the empty strand of a link chain from a chain wheel.
- the ammunition guide chain shown there consists of two highly tear-resistant parallel transport chains (link chains), the spacing of which essentially corresponds to the cartridge length. At a constant distance, the two parallel link chains are connected to each other via crossbars.
- the endless ammunition guide chain thus formed is guided in several loops over deflection rollers through an ammunition magazine. In operation, the ammunition guide chain transfers the ammunition via an ammunition supply chain to an automatic firearm that draws the cartridge in, fires the empty shell over the ammunition Feed chain of the guide chain feeds them back into the
- the speed of this process is determined by the firing sequence or the cadence of the weapon, which also drives drive sprockets of the guide chain via the ammunition supply chain via corresponding couplings.
- the magazine itself contains several measures to guide the objects to be transported (the ammunition) and the guide chain via guide and rolling elements, and to reduce the acceleration masses when starting (starting a sequence of shots) of the chain, as well as the chain tension, especially in To maintain the chain debris, the following problem occurs on the drive chain sprockets:
- Fig. 5 illustrates this state.
- the corresponding chain link follows the circumference of the chain wheel and kinks the chain. This increases the already extreme loads on the link chain and the sprocket. The result is increased wear of the corresponding components or, in extreme cases, even an interruption in the ammunition supply, which interrupts or completely blocks the operation of the weapon.
- the present invention is therefore based on the object of ensuring that chain links slide smoothly from chain sprockets for conveyor systems formed using link chains, even at high accelerations.
- the chain scraper according to claim 1 solves this problem.
- the effect is that a guide area is provided which already receives the rolling chain for as long as it is still in scheduled engagement with the sprocket.
- This is achieved by the fact that the guide area does not take up the chain bushes or rollers themselves, but the side connecting plates of the chain, the chain flanks, which run past the teeth on both sides of the chain wheel.
- the guide area thus ensures that the chain runs largely tangentially from the sprocket, regardless of the chain tension, acceleration influences and other factors that can lead to the buckling of an unguided chain.
- the dependent claims relate to advantageous refinements of the invention.
- the claim 15 relates to an ammunition magazine in which the chain wiper according to the invention is preferably used.
- the claims 2 to 3 relate to configurations that take into account the special design of link chains.
- Claim 2 relates to preferred dimensions of the guide area, which are suitable for the chain guide.
- Claim 3 relates to an embodiment in which the chain flanks are guided on both sides of the chain wheel, and Claim 4 relates to the connection of the two areas to one unit.
- claims 5 to 8 relate to an embodiment in which a guide area or guide areas are present both on the empty and on the load side of the chain. This allows the chain to change direction without the need for additional guidance measures.
- the claims 6 and 7 are directed to the one-piece design, which is particularly favorable in terms of production technology, in which the chain scraper can be manufactured in a few simple mechanical processing steps from a plate-shaped blank or as a complete molded piece.
- Claim 8 relates to an embodiment in which chain wipers can be designed for wrap angles that can be above and below 180 °, ie Load and empty strands move away from each other with increasing distance from the sprocket or they run towards each other.
- Claims 9 to 12 relate to preferred designs in which the chain wiper is guided to the chain wheel in an optimal operating position without complex fixings and adjustments.
- the design specified in claim 9 enables a particularly simple positioning of the chain scraper in the radial direction of the chain wheel, which is realized by corresponding radial guide surfaces - namely the shoulder shoulder and the circular segment-shaped end face of the recess.
- Claims 10 and 11 relate to the fastening, which prevents the chain scraper from becoming detached from the chain wheel.
- Claims 12 and 13 indicate training and the interaction of different features, which realize a particularly low-wear and reliable, floating mounting of the chain wiper.
- the chain scraper behaves practically as a self-adjusting element that, depending on the operating state, assumes an optimal working position.
- the claim 14 relates to material properties that are particularly advantageous for the chain wiper presented.
- 1 shows a schematic sectional view of a section of an ammunition magazine
- 2 shows a section of a plan view of a drive / deflection area of an ammunition conveyor chain
- Fig. 3 is a perspective view of a
- Fig. 4 is a side view from the outside on
- Fig. 5 shows the view of Fig. 4 without chain wipers and with a broken link chain.
- FIG. 1 shows an ammunition magazine 2 in which an endless ammunition conveyor chain 4 conveys cartridges 6 in the conveying direction A.
- the ammunition conveyor chain 4 consists of two highly tear-resistant parallel link chains 7, the spacing of which essentially corresponds to the cartridge length.
- the two parallel link chains 7 are connected to one another at constant spacing via transverse webs 8.
- the spacing of the crosspieces 8 from one another is essentially equal to the cartridge diameter plus the diameter of a crosspiece 8 and a certain margin for the freedom of movement of the guided cartridges 6.
- the endless ammunition conveyor chain 4 thus formed is guided in several loops over deflection rollers 10, 12 by the in FIG. 1 shown section of the ammunition magazine 2 out.
- the cartridges 6 are guided in guideways 14 which are provided with slide roller rails made of suitable materials, for example low-wear plastics.
- 2 shows the rigid, thin transverse webs 8, which each separate two successive cartridges 6 or their sleeves 6 'from one another and which at the same time serve as drivers for conveying them through the guideway 14 in the ammunition magazine 2.
- the crossbars 8 can have a profile adapted to the shape of the cartridge, with which tilting of the cartridges 6 is avoided. Furthermore, the crosspieces 8 can be fastened in an axially rotatable manner between the two link chains 7 in order to facilitate the rolling off of the cartridges 6 or the sleeves within the guide track 14 and on the crosspieces 8 themselves.
- guide heads 16 are provided which guide the conveyor chain 4 through the ammunition magazine 2 in guide rails (not shown).
- the link chains 7 consist of lateral flanks 18, which are connected to one another via bushes or sleeves 20 located between them, the flanks 18 being overlapped with one another in the running direction of the link chain 7.
- the link chains 7 are flexible in the plane perpendicular to their bushing axes, so that they can be guided over a corresponding sprocket 22, the teeth 24 of which engage in the spaces arranged between the bushings / sleeves 20.
- two such sprockets 22 are arranged in a rotationally fixed manner on a common drive shaft 26 via a tooth profile.
- the sprocket teeth 24 are aligned so that the crossbars 8 of the ammunition conveyor chain 4 run parallel to the axis 27 of the drive shaft 26 (Fig. 2).
- the drive shaft 26 is mounted in a suitable manner in the housing 28 and driven via corresponding gears (not shown).
- the task of this transmission is to drive the ammunition conveyor chain 4 in such a way that an automatic (not shown) see firearm the cartridges 6 is fed according to their shot cadence.
- an ammunition supply system 30 arranged between the ammunition magazine 2 and the weapon, which, on a deflection roller 10, supported by transfer wheels 32, takes cartridges 6 loaded from the conveyor chain 4, feeds them to the weapon and feeds empty cartridge cases 6 1 unloads from the weapon and in turn transfers this to the ammunition conveyor chain 4 via a further transfer wheel 32 and thus feeds it back to the ammunition magazine 2.
- the structure of the chain scraper is described with reference to FIG. 3. For a better view, only the drive shaft 26, the sprocket 22 and the chain scraper 34 are shown.
- the chain scraper 34 is formed in one piece from a plate. It consists of a material that can be used in a temperature range from -80 ° C to 200 ° C, in particular between -40 ° C and 110 ° C. A suitable steel quality is e.g. the 42 CrMO 4. Other non-metallic materials with corresponding properties can also be used (e.g. fiber composite materials).
- the chain scraper 34 shown has a total of four guide regions 36 which run on both sides of the chain wheel 22.
- the guide areas 36 possibly lead the narrow sides of the chain flanks 18 essentially tangentially from the chain wheel, and thus prevent the effect shown in FIG. 5 from occurring.
- the chain scraper 34 essentially represents a slotted disc that can be manufactured by machining an output piece.
- This starting piece can be a corresponding sheet metal piece, a cast or forged blank or a composite fiber shaped piece.
- the scope of mechanical post-processing depends on the manufacturing tolerances with which the semi-finished product can be manufactured.
- the chain wheel scraper can also be used as a fitting, e.g. in investment casting.
- the chain scraper 34 has between the guide areas 36 a slot which runs perpendicular to the axis of rotation 27 of the drive shaft 26 and which is at least as wide as the teeth 24 of the chain wheel 22 radial Recess on whose diameter corresponds approximately to the diameter of a shoulder 42 formed on the sprocket 22.
- the shoulder 42 has a cylindrical or conical shoulder surface 44, on which the radial surface 45 of the chain scraper 34, which faces the axis of rotation 27, is supported. In this way, the chain scraper encompasses the ring gear 23 of the chain wheel 22.
- the guide regions 36 are formed at the ends of the fork-shaped connecting plates 40.
- the chain scraper is thus guided in the direction of the axis of rotation 27 through the side flanks of the ring gear 23 and fixed between the load and empty run of the link chain 7 via the radial surface 44 of the shoulder 42. So that the chain scraper 34 cannot detach itself from the chain wheel in the direction of the link chain 7, a recess 46 is provided at the end remote from the chain wheel, into which a holding means 48 engages and fixes the chain scraper 34.
- the holding means 48 can be a rod running between the housing parts 28 in parallel to the axis of rotation 27 of the drive shaft 26. But it can also be designed as a bolt, rivet, screw or other equivalent fastening.
- the strength of the chain scraper is reduced in the area of the recess 46. But it can also be made the same thickness over its entire length.
- the chain scraper 34 shown is thus floating between the holding means 48 and the chain wheel 22. All active surfaces are machined and tolerated in such a way that the corresponding components are used with little wear.
- a sliding pairing can be formed between the radial head regions 50 of the teeth 24 and the base surface 52 facing them runs in the slot running between the guide regions 36 and the connecting lugs 40.
- the base surface 52 is then also to be designed as a radial surface with respect to the axis of rotation 27, which has approximately the same radius as the tip circle of the chain wheel.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP04727528A EP1618318A1 (en) | 2003-04-25 | 2004-04-15 | Chain remover |
CA002523551A CA2523551A1 (en) | 2003-04-25 | 2004-04-15 | Chain remover |
US11/257,558 US20060144215A1 (en) | 2003-04-25 | 2005-10-25 | Firearms, chain removers for firearms and methods for using the same |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10318829A DE10318829B4 (en) | 2003-04-25 | 2003-04-25 | Kettenabstreifer |
DE10318829.0 | 2003-04-25 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/257,558 Continuation US20060144215A1 (en) | 2003-04-25 | 2005-10-25 | Firearms, chain removers for firearms and methods for using the same |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2004097256A1 true WO2004097256A1 (en) | 2004-11-11 |
Family
ID=33304945
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2004/003991 WO2004097256A1 (en) | 2003-04-25 | 2004-04-15 | Chain remover |
Country Status (6)
Country | Link |
---|---|
US (1) | US20060144215A1 (en) |
EP (1) | EP1618318A1 (en) |
KR (1) | KR20060013523A (en) |
CA (1) | CA2523551A1 (en) |
DE (1) | DE10318829B4 (en) |
WO (1) | WO2004097256A1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102815503A (en) * | 2012-09-21 | 2012-12-12 | 张志军 | Novel horizontal chain-type slag remover |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2526173A (en) * | 1948-03-30 | 1950-10-17 | Ad Mischler Sarl Ets | Mechanism for controlling roller shutters or like closing means |
DE2909440A1 (en) * | 1978-03-22 | 1979-09-27 | Gen Motors Corp | VIBRATION DAMPER FOR A CHAIN DRIVE |
EP0280365A2 (en) * | 1987-02-23 | 1988-08-31 | SOCIETA' ITALIANA CATENE CALIBRATE REGINA S.p.A. | Flapping-preventing runner for a pre-timed distribution assembly for internal combustion engine |
US5320582A (en) * | 1991-11-29 | 1994-06-14 | Nec Corporation | Chain driving unit |
EP1024339A2 (en) * | 1999-01-28 | 2000-08-02 | Heckler & Koch GmbH | Ammunition magazine for unbelted ammunition |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2101172A (en) * | 1936-08-26 | 1937-12-07 | Willard Mfg Corp | Sprocket chain truing device |
DE3037585A1 (en) * | 1980-10-04 | 1982-05-13 | Gewerkschaft Eisenhütte Westfalia, 4670 Lünen | CHAIN DEFLECTOR DEVICE FOR THE PLANTER CHAIN WHEEL OF A PLANE DRIVE |
US4674392A (en) * | 1982-11-26 | 1987-06-23 | Heckler & Koch Gmbh | Cartridge feed mechanism |
DE3604488C3 (en) * | 1986-02-13 | 1994-07-07 | Halbach & Braun Ind Anlagen | Drive station for a chain conveyor, in particular face conveyor |
US4869708A (en) * | 1988-04-15 | 1989-09-26 | Borg-Warner Transmission And Engine Components Corporation | Sprocket retention/chain guide assembly |
DE3935162A1 (en) * | 1989-10-21 | 1991-04-25 | Gewerk Eisenhuette Westfalia | Plough drive on chain drag conveyor - has box with access opening for sprocket and baffle changing |
DE19537414B4 (en) * | 1995-10-09 | 2004-03-11 | Udo Adam Maschinenfabrik | Planer drive with pressure roller scraper |
US6389948B1 (en) * | 1999-01-28 | 2002-05-21 | Heckler & Koch Gmbh | Ammunition feed device for beltless fed ammunition |
DE19903346C1 (en) * | 1999-01-28 | 2000-08-17 | Heckler & Koch Gmbh | Ammunition feed for beltless ammunition |
US6405629B1 (en) * | 1999-01-28 | 2002-06-18 | Heckler & Koch Gmbh | Ammunition magazine for beltless fed ammunition |
DE29921342U1 (en) * | 1999-12-03 | 2000-01-27 | Dbt Gmbh | Drive station for planing systems and chain deflectors therefor |
DE10050699C1 (en) * | 2000-10-13 | 2002-06-13 | Dbt Gmbh | Drive station for a chain scraper conveyor for mining companies |
DE10050701B4 (en) * | 2000-10-13 | 2005-02-10 | Dbt Gmbh | Drive and tensioning station of a chain scraper conveyor for mining operations |
-
2003
- 2003-04-25 DE DE10318829A patent/DE10318829B4/en not_active Expired - Fee Related
-
2004
- 2004-04-15 WO PCT/EP2004/003991 patent/WO2004097256A1/en not_active Application Discontinuation
- 2004-04-15 EP EP04727528A patent/EP1618318A1/en not_active Withdrawn
- 2004-04-15 KR KR1020057020294A patent/KR20060013523A/en not_active Application Discontinuation
- 2004-04-15 CA CA002523551A patent/CA2523551A1/en not_active Abandoned
-
2005
- 2005-10-25 US US11/257,558 patent/US20060144215A1/en not_active Abandoned
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2526173A (en) * | 1948-03-30 | 1950-10-17 | Ad Mischler Sarl Ets | Mechanism for controlling roller shutters or like closing means |
DE2909440A1 (en) * | 1978-03-22 | 1979-09-27 | Gen Motors Corp | VIBRATION DAMPER FOR A CHAIN DRIVE |
EP0280365A2 (en) * | 1987-02-23 | 1988-08-31 | SOCIETA' ITALIANA CATENE CALIBRATE REGINA S.p.A. | Flapping-preventing runner for a pre-timed distribution assembly for internal combustion engine |
US5320582A (en) * | 1991-11-29 | 1994-06-14 | Nec Corporation | Chain driving unit |
EP1024339A2 (en) * | 1999-01-28 | 2000-08-02 | Heckler & Koch GmbH | Ammunition magazine for unbelted ammunition |
Also Published As
Publication number | Publication date |
---|---|
DE10318829A1 (en) | 2004-11-18 |
DE10318829B4 (en) | 2005-02-17 |
US20060144215A1 (en) | 2006-07-06 |
KR20060013523A (en) | 2006-02-10 |
CA2523551A1 (en) | 2004-11-11 |
EP1618318A1 (en) | 2006-01-25 |
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