GB2127127A - Drive chain - Google Patents

Drive chain Download PDF

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Publication number
GB2127127A
GB2127127A GB08323803A GB8323803A GB2127127A GB 2127127 A GB2127127 A GB 2127127A GB 08323803 A GB08323803 A GB 08323803A GB 8323803 A GB8323803 A GB 8323803A GB 2127127 A GB2127127 A GB 2127127A
Authority
GB
United Kingdom
Prior art keywords
link
links
longitudinally
drive chain
section
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
Application number
GB08323803A
Other versions
GB8323803D0 (en
GB2127127B (en
Inventor
Dieter Grundken
Manfred Redder
Reinhold Bruggemann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Gewerkschaft Eisenhutte Westfalia GmbH
Original Assignee
Gewerkschaft Eisenhutte Westfalia GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Gewerkschaft Eisenhutte Westfalia GmbH filed Critical Gewerkschaft Eisenhutte Westfalia GmbH
Publication of GB8323803D0 publication Critical patent/GB8323803D0/en
Publication of GB2127127A publication Critical patent/GB2127127A/en
Application granted granted Critical
Publication of GB2127127B publication Critical patent/GB2127127B/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G19/00—Conveyors comprising an impeller or a series of impellers carried by an endless traction element and arranged to move articles or materials over a supporting surface or underlying material, e.g. endless scraper conveyors
    • B65G19/18—Details
    • B65G19/20—Traction chains, ropes, or cables
    • 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
    • F16G—BELTS, CABLES, OR ROPES, PREDOMINANTLY USED FOR DRIVING PURPOSES; CHAINS; FITTINGS PREDOMINANTLY USED THEREFOR
    • F16G13/00—Chains
    • 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
    • F16G—BELTS, CABLES, OR ROPES, PREDOMINANTLY USED FOR DRIVING PURPOSES; CHAINS; FITTINGS PREDOMINANTLY USED THEREFOR
    • F16G13/00—Chains
    • F16G13/12—Hauling- or hoisting-chains so called ornamental chains

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chain Conveyers (AREA)

Abstract

A drive chain for a scraper-chain conveyor comprises alternate horizontal links 1 and vertical links 2. Each horizontal link 1 has a constant circular cross-section 3, and each vertical link 2 has a pair of parallel, longitudinally- extending portions 4, each having a flattened (preferably an oval or elliptical) cross-section. The longitudinally- extending portions 4 of each vertical link 2 are connected by a pair of arcuate web portions 6 of circular cross-section. <IMAGE>

Description

SPECIFICATION Drive chain This invention relates to a drive chain for a mineral mining installation such as a scraper-chain conveyor.
Chains are used in mining operations, particularly as drive chains for ploughs and scraper-chain conveyors. Such drive chains have links of circular cross-section, that is to say their links are made from metal of circular cross-section. Thus, throughout this specification, the term "cross-section" whenever used to qualify the shape of a chain link should be construed accordingly. Scraper-chain conveyors used in underground mining operations may have a single, central drive chain, to which the scrapers are attached at their mid-portions (a single, centre-chain conveyor), two parallel drive chains to which the scrapers are attached at their mid-portions (a double, centre-chain conveyor), or two parallel drive chains to which the scrapers are attached adjacent to their ends (a double, outboard-chain conveyor).The increasing lengths of high-output longwall workings lead to constantly increasing power requirements for scraper-chain conveyors, and therefore to drive chains of increasing strength and weight. High power requirements are also imposed in the case of known conveyors for negotiating curves, for example where a scraper assembly has to be deflected through roughly 90 at a roller curve.
The use of drive chains having links of circular cross-section is limited by the dimensions of the conveyor channel sections (pans). Thus, it is inconvenientforthevertical chain links to project too far above the floor of the conveyor. As the drive chain(s) pass beneath the floor on the return run, an excessive vertical chain dimension can lead to the entire conveyor having to be jacked up to provide sufficient space between the lower (return) run of the chain(s) and the conveyor floor to permit passage of the chain(s).
The aim of the invention is to provide a drive chain which has a smaller vertical dimension than known chains, without involving excessive manufacturing costs, and which can provide a considerably increased tractive force, whilst its chain links have the ability to deflect in order to pass round chain sprockets or a roller curve.
The present invention provides a drive chain for a mineral mining installation, the drive chain having a plurality of first links alternating with a plurality of second links, each of the first links having a constant circular cross-section, and each of the second links having a pair of parallel longitudinally-extending portions and a pair of arcuate end portions interconnecting the longitudinally-extending portions, wherein the longitudinally-extending portions of each second link each have a flattened cross-section, and the arcuate end portions of each second link each have a circular cross-section.
When this drive chain is used for a scraper-chain conveyor, the first links are horizontal, and the second links are vertical.
Preferably, the major axis of each longitudinallyextending portion of each second link has a length that is greater than the diameter of the circular cross-section of each first link, and the minor axis of each longitudinally-extending portion of each second link has a length that is smaller than the diameter of the circular cross-section of each first link.
Because of the flattening of the longitudinallyextending portions of its second (vertical) links, such a chain has a high hauling capacity, whilst having a considerably reduced vertical dimension compared with the existing chains having both horizontal and vertical links of circular cross-section. Thus, such a chain can be used as a drive chain for a scraperchain assembly which has an increased haulage capacity, without the need for the channel sections of the conveyor to have increased dimensions.
Preferably, the diameter of the circular crosssection of each arcuate end portion of each second link is equal to the diameter of the circular crosssection of each first link, so that the links of the chain can still deflect to a sufficient extent.
Advantageously, the first and second links have the same overall size. The second (vertical) links can therefore, be made (without excessive cost) from the links of circular cross-section which are used for the first (horizontal) links. Preferably, this is achieved by flattening the parallel longitudinal portions of the second links by means of a pressing or upsetting operation.
Advantageously, the pitch of each second link is the same as that of each first link. Conveniently, the distance between the adjacent surfaces of the longitudinally-extending portions of each second link is approximately equal to, or slightly smallerthan, the distance between the corresponding longitudinallyextending portions of each first link.
The longitudinally-extending portions of the second links may each have an approximately oval, half-oval or elliptical cross-section. Advantageously, the longitudinally-extending portions of the second links are delimited at the outside and inside by parallel planar surfaces, the ends of which are interconnected by arcuate surfaces forming part of the associated arcuate end portions.
Advantageously, the ratio of the length of the major axis of each longitudinally-extending portion to that of the minor axis of that longitudinallyextending portion is between 1.5:1 and 2.5:1. Prefer ably, this ratio is between 1.7:1 and 1.9: 1 1.9:1.Such a chain occupies approximately 20 to 30 % less space than existing chains of this type, whilst providing the same tractive force.
Chains constructed in accordance with the invention are particularly useful as drive chains for scraper-chain conveyors; and especially in centrechain scraper-chain conveyors which can be deflected round roller curves. Moreover, such chains can also be used in underground winning installations, and particularly as plough drive chains which are moved, in the usual manner, in chain-guide ducts associated with a plough guide.
A scraper-chain conveyor drive chain constructed in accordance with the invention will now be described, by way of example, with reference to accompanying drawings, in which: Figure 1 is a perspective view of part of the drive chain; Figure 2 is a cross-sectional view seen in the direction of the arrow Il shown in Figure 1; Figure 3 is a plan view of part of the drive chain of Figure 1; and Figures 4 and 5 show two modified cross-sectional forms of the longitudinally-extending portions of the vertical links of the drive chain shown in Figures 1 to 3.
Referring to the drawings, Figure 1 shows a scraper-chain conveyor drive chain comprising alternate horizontal links 1 and vertical links 2. The horizontal links 1 correspond to those of a normal chain, each having a constant circular cross-section 3.
Each of the vertical chain links 2 has a pair of parallel longitudinally-extending portions 4, and a pair of arcuate end portions 6 interconnecting the longitudinal portions 4. The arcuate end portions 6 have a circular cross-section corresponding to that of the horizontal links 1, whereas the longitudinal portions 4 are of flattened cross-section 5 compared to this circular cross-section. This arrangement can be seen best in Figure 3, which shows the changeover zone 7 from the circular cross-section arcuate end portions 6 to the broader, flattened longitudinal portions 4. As shown in Figure 2, the horizontal axis of each of the flattened cross-sections 5 of the two longitudinal portions 4 has a length L that is greater than the diameter D of the circular cross-section 3 of the horizontal links 1.The vertical axis of the flattened cross-section 5 of each of the longitudinal portions 4, on the other hand, has a length H which is smaller than the diameter D.
Both the horizontal links 1 and the vertical links 2 have the same overall size. Accordingly, the arcuate end portions 6 of the vertical links 2 have the same diameter D as the horizontal links 1. Moreover, the horizontal links 1 and the vertical links 2 have the same pitch t. The internal width b2 of each vertical link 2 is at least approximately equal to the internal width b1 of each horizontal link 1. It may, however, be siightly (for example approximately one to two millimetres) smaller than the latter.
As shown in Figures 1 and 2, the cross-section 5 of the horizontal longitudinal portions 4 of the vertical links 2 is of at least roughly oval shape. It is delimited at its outer and inner faces by parallel flat surfaces 8 and 9, the end of which are interconnected by arcuate faces 10.
It would also be possible for the cross-sectional faces 5 of the horizontal longitudinal portions 4 of the vertical links 2 to be approximately half-oval, as shown in Figure 4, or roughly elliptical, as shown in Figure 5.
The ratio of the length of the horizontal (major) axis of the flattened cross-section 5 of the longitudinal portions 4 to that of its vertical (minor) axis, that is to say the ratio L:H, is expediently between 1.5:1 and 2.5:1 and preferably between 1.7:1 and 1.9:1.
The vertical links 2 of the chain 1 are expediently produced from links of circular cross-section. Consequently, the vertical links 2 can be made by modifying the shape of the horizontal links 1. Such a shaping operation is carried out on the two longitudinal portions 4 of these chain links, so as to provide the required flattened cross-section 5.

Claims (11)

1. A drive chain for a mineral mining installation, the drive chain having a plurality of first links alternating with a plurality of second links, each of the first links having a constant circular crosssection, and each of the second links having a pair of parallel longitudinally-extending portions and a pair of arcuate end portions interconnecting the longitudinally-extending portions, wherein the longitudinally-extending portions of each second link each have a flattened cross-section, and the arcuate end portions of each second link each have a circular cross-section.
2. A drive chain as claimed in claim 1, wherein the major axis of each longitudinally-extending portion of each second link has a length that is greater than the diameter of the circular crosssection of each first link, and wherein the minor axis of each longitudinally-extending portion of each second link has a length that is smaller than the diameter of the circular cross-section of each first link.
3. A drive chain as claimed in claim 1 or claim ?, wherein the first and second links have the same overall size.
4. A drive chain as claimed in any one of claims 1 to 3, wherein the longitudinally-extending portions of the second links each have an approximately oval, half-oval or elliptical cross-section.
5. A drive chain as claimed in any one of claims 1 to 4, wherein the longitudinally-extending portions of the second links are delimited at the outside and inside by parallel planar surfaces, the ends of which are interconnected by arcuate surfaces forming part of the associated arcuate end portions.
6. A drive chain as claimed in any one of claims 1 to 5, wherein the ratio of the length of the major axis of each longitudinally-extending portion to that of the minor axis of that longitudinally-extending portion is between 1.5:1 and 2.5:1.
7. A drive chain as claimed in claim 6, wherein said ratio is between 1.7:1 and 1.9:1.
8. A drive chain as claimed in any one of claims 1 to 7, wherein the diameter of the circular crosssection of each arcuate end portion of each second link is equal to the diameter of the circular crosssection of each first link.
9. A drive chain as claimed in any one of claims 1 to 8, wherein the pitch of each second link is the same as that of each first link.
10. A drive chain as claimed in any one of claims 1 to 9, wherein the distance between the adjacent surfaces of the longitudinally-extending portions of each second link is approximately equal to, or slightly smaller than, the distance between the corresponding longitudinally-extending portions of each first link.
11. A drive chain substantially as hereinbefore described with reference to, and as illustrated by, Figures 1 to 3, Figures 1 to 3 as modified by Figure 4, or Figures 1 to 3 as modified by Figure 5 of the accompanying drawings.
GB08323803A 1982-09-15 1983-09-06 Drive chain Expired GB2127127B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19823234137 DE3234137C2 (en) 1982-09-15 1982-09-15 Pulling chain consisting of a link chain for mining conveyors and / or underground mining facilities

Publications (3)

Publication Number Publication Date
GB8323803D0 GB8323803D0 (en) 1983-10-05
GB2127127A true GB2127127A (en) 1984-04-04
GB2127127B GB2127127B (en) 1985-09-25

Family

ID=6173235

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08323803A Expired GB2127127B (en) 1982-09-15 1983-09-06 Drive chain

Country Status (3)

Country Link
DE (1) DE3234137C2 (en)
FR (1) FR2533008B1 (en)
GB (1) GB2127127B (en)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0266930A1 (en) * 1986-10-20 1988-05-11 Parsons Chain Company Limited Chains and chain conveyors
WO1988003906A1 (en) * 1986-11-27 1988-06-02 Wheway Becker Limited Chain
US4867300A (en) * 1987-02-11 1989-09-19 Halbach & Braun Industrieanlagen Round link chain for chain scraper conveyors
GB2222654A (en) * 1988-07-06 1990-03-14 Wheway Becker Ltd Chain block assembly
GB2326145A (en) * 1997-06-11 1998-12-16 Dbt Gmbh Scraper chain for scraper chain conveyors
AU727214B2 (en) * 1997-01-17 2000-12-07 Dbt Gmbh A scraper chain belt for scraper chain conveyors
GB2397107A (en) * 2003-01-13 2004-07-14 Joy Mm Delaware Inc A longwall conveyor chain having a short broad vertical link
GB2407141A (en) * 2003-10-18 2005-04-20 Theile J D Gmbh Link chain
WO2008118323A1 (en) * 2007-03-22 2008-10-02 Columbus Mckinnon Corporation Link chain
GB2486572A (en) * 2010-12-15 2012-06-20 Theile J D Gmbh Flat chain link for a conveyor chain
CN103534513A (en) * 2011-03-18 2014-01-22 路德-李格和蒂茨链条有限公司 Device for attaching chain links
CN105292930A (en) * 2015-11-11 2016-02-03 无锡市福克斯煤矿机械制造有限公司 Conveying mixing chain for mine
CN109128702A (en) * 2018-09-06 2019-01-04 鹤壁链条有限责任公司 A kind of mining high-intensitive compact chain production technology

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3433715A1 (en) * 1983-09-21 1985-04-11 Fa. August Thiele, 5860 Iserlohn Round link chain, especially for scraper chain conveyors
DE3533774A1 (en) * 1985-09-21 1987-04-16 Phb Weserhuette Ag Suspension for discharge devices
DE3615734A1 (en) * 1986-05-09 1987-11-12 Gewerk Eisenhuette Westfalia Link chain for use in mining, in particular as a scraper chain or plough chain and the like
DE4316753C2 (en) * 1993-05-19 2002-01-24 Thiele Gmbh & Co Kg Middle chain conveyor with two-part scraper, especially double middle chain conveyor
DE4332379C1 (en) * 1993-09-23 1994-09-22 Thiele Gmbh & Co Kg Pull chain
DE4336110C2 (en) * 1993-10-22 1999-08-05 Dbt Gmbh Double chain scraper conveyor
DE19520673A1 (en) * 1995-06-07 1996-12-12 Thiele Gmbh & Co Kg Link chain for mining tasks including scraping and planing
GB2320234B (en) * 1996-12-13 2000-03-29 Dbt Gmbh Link chain for chain conveyers
DE19701579B4 (en) * 1996-12-13 2006-10-26 Dbt Gmbh Link chain for chain conveyors, in particular chain scraper conveyor for mining use
DE19726028C2 (en) * 1997-01-17 1999-09-30 Dbt Gmbh Scraper chain belt for chain scraper conveyors
DE19704590B4 (en) * 1997-02-07 2006-10-26 Dbt Gmbh Scraper chain for chain scraper conveyor
PL333327A1 (en) * 1997-03-20 1999-12-06 Dbt Gmbh Driving torque transmission chain in particular for mining machines
DE19831994B4 (en) * 1998-07-16 2005-11-17 Halbach & Braun Industrieanlagen Gmbh & Co. Transport chain for chain scraper conveyor
DE10154901B4 (en) * 2001-10-30 2004-05-06 Rud-Kettenfabrik Rieger & Dietz Gmbh U. Co. Cargo chains
DE102016121013A1 (en) * 2016-11-03 2018-05-03 Thiele Gmbh & Co. Kg Flat link chain

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB693734A (en) * 1951-08-30 1953-07-08 Equipment Minier Soc D Improvements relating to chains for conveyors, more especially flight or scraper conveyors, chain elevators and like machines

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DE1071559B (en) * 1959-12-17
US2525193A (en) * 1946-05-01 1950-10-10 Carlos E Anderson Chain link
FR1041883A (en) * 1951-08-16 1953-10-27 Equip Minier Soc D Special chain
DE941597C (en) * 1951-08-16 1956-04-12 Equip Minier Soc D Chain, especially for conveyor devices of the scraper type
DE939545C (en) * 1952-02-06 1956-02-23 Gewerk Eisenhuette Westfalia Link chain, especially for double chain tow conveyors
DE1757870U (en) * 1955-10-17 1957-12-12 Oskar Noe Ingenieur Buero LINK CHAIN, IN PARTICULAR FOR CONVEYOR DEVICES IN THE PIT OPERATION.
US3339711A (en) * 1965-11-05 1967-09-05 Cie Hydrolic Vincent Ltee Conveyor chain
DE1912555A1 (en) * 1969-03-12 1970-10-01 Carl Clarus Round link chains and process for the production of round link chains
US3744239A (en) * 1971-12-20 1973-07-10 T Anson Chain link with extended wear surface
DE2343266A1 (en) * 1973-08-28 1975-03-27 Meyer Roth Pastor Maschf Chain with two types of link shapes and materials - provides extra elasticity and wear resistance
GB1467445A (en) * 1974-04-09 1977-03-16 Parsons Controls Ltd Main links for chain or wire rope slings
GB1574440A (en) * 1976-02-04 1980-09-10 Bruce P Link chain
DE3204287C2 (en) * 1982-02-05 1985-11-07 Rud-Kettenfabrik Rieger & Dietz Gmbh U. Co, 7080 Aalen Chain with chain links welded from round material

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB693734A (en) * 1951-08-30 1953-07-08 Equipment Minier Soc D Improvements relating to chains for conveyors, more especially flight or scraper conveyors, chain elevators and like machines

Cited By (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0266930A1 (en) * 1986-10-20 1988-05-11 Parsons Chain Company Limited Chains and chain conveyors
WO1988003906A1 (en) * 1986-11-27 1988-06-02 Wheway Becker Limited Chain
EP0273595A1 (en) * 1986-11-27 1988-07-06 Wheway Becker Limited Chain
US4867300A (en) * 1987-02-11 1989-09-19 Halbach & Braun Industrieanlagen Round link chain for chain scraper conveyors
GB2222654A (en) * 1988-07-06 1990-03-14 Wheway Becker Ltd Chain block assembly
AU727214B2 (en) * 1997-01-17 2000-12-07 Dbt Gmbh A scraper chain belt for scraper chain conveyors
GB2326145A (en) * 1997-06-11 1998-12-16 Dbt Gmbh Scraper chain for scraper chain conveyors
GB2326145B (en) * 1997-06-11 2001-01-10 Dbt Gmbh Scrapper chain for scraper chain conveyors
US6513647B1 (en) 1997-06-11 2003-02-04 Dbt Deutsche Bergbau-Technik Gmbh Scraper chain for scraper chain conveyors
US6655514B1 (en) * 1997-06-11 2003-12-02 Dbt Gmbh Scraper chain for scraper chain conveyors
GB2397107A (en) * 2003-01-13 2004-07-14 Joy Mm Delaware Inc A longwall conveyor chain having a short broad vertical link
GB2407141A (en) * 2003-10-18 2005-04-20 Theile J D Gmbh Link chain
GB2407141B (en) * 2003-10-18 2007-03-28 Theile J D Gmbh Link chain
US7231759B2 (en) 2003-10-18 2007-06-19 J.D. Theile Gmbh & Co. Kg Link chain
AU2004220760B2 (en) * 2003-10-18 2009-03-12 J.D. Theile Gmbh & Co. Kg Link chain
CN1609472B (en) * 2003-10-18 2011-11-30 J.D.锡尔两合公司 Link chain
WO2008118323A1 (en) * 2007-03-22 2008-10-02 Columbus Mckinnon Corporation Link chain
GB2486572A (en) * 2010-12-15 2012-06-20 Theile J D Gmbh Flat chain link for a conveyor chain
GB2486572B (en) * 2010-12-15 2014-05-14 Theile J D Gmbh Flat chain link for a linked chain and steel linked chain with such flat chain links
CN103534513A (en) * 2011-03-18 2014-01-22 路德-李格和蒂茨链条有限公司 Device for attaching chain links
CN103534513B (en) * 2011-03-18 2017-03-29 路德-李格和蒂茨链条有限公司 For the device of connection end open link of chain by made by predefining geometric chain link
CN105292930A (en) * 2015-11-11 2016-02-03 无锡市福克斯煤矿机械制造有限公司 Conveying mixing chain for mine
CN109128702A (en) * 2018-09-06 2019-01-04 鹤壁链条有限责任公司 A kind of mining high-intensitive compact chain production technology

Also Published As

Publication number Publication date
DE3234137C3 (en) 1994-04-14
GB8323803D0 (en) 1983-10-05
FR2533008A1 (en) 1984-03-16
DE3234137A1 (en) 1984-03-15
GB2127127B (en) 1985-09-25
DE3234137C2 (en) 1994-04-14
FR2533008B1 (en) 1986-04-18

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PCNP Patent ceased through non-payment of renewal fee

Effective date: 19930906