WO2006038881A1 - Conveyor system with an offset bush - Google Patents
Conveyor system with an offset bush Download PDFInfo
- Publication number
- WO2006038881A1 WO2006038881A1 PCT/SG2004/000326 SG2004000326W WO2006038881A1 WO 2006038881 A1 WO2006038881 A1 WO 2006038881A1 SG 2004000326 W SG2004000326 W SG 2004000326W WO 2006038881 A1 WO2006038881 A1 WO 2006038881A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- link block
- pin
- bushing
- offset
- chain
- Prior art date
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
- B65G17/00—Conveyors having an endless traction element, e.g. a chain, transmitting movement to a continuous or substantially-continuous load-carrying surface or to a series of individual load-carriers; Endless-chain conveyors in which the chains form the load-carrying surface
- B65G17/30—Details; Auxiliary devices
- B65G17/38—Chains or like traction elements; Connections between traction elements and load-carriers
- B65G17/385—Chains or like traction elements; Connections between traction elements and load-carriers adapted to follow three-dimensionally curved paths
-
- 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
- B65G17/00—Conveyors having an endless traction element, e.g. a chain, transmitting movement to a continuous or substantially-continuous load-carrying surface or to a series of individual load-carriers; Endless-chain conveyors in which the chains form the load-carrying surface
- B65G17/06—Conveyors having an endless traction element, e.g. a chain, transmitting movement to a continuous or substantially-continuous load-carrying surface or to a series of individual load-carriers; Endless-chain conveyors in which the chains form the load-carrying surface having a load-carrying surface formed by a series of interconnected, e.g. longitudinal, links, plates, or platforms
- B65G17/065—Conveyors having an endless traction element, e.g. a chain, transmitting movement to a continuous or substantially-continuous load-carrying surface or to a series of individual load-carriers; Endless-chain conveyors in which the chains form the load-carrying surface having a load-carrying surface formed by a series of interconnected, e.g. longitudinal, links, plates, or platforms the load carrying surface being formed by plates or platforms attached to a single traction element
- B65G17/066—Conveyors having an endless traction element, e.g. a chain, transmitting movement to a continuous or substantially-continuous load-carrying surface or to a series of individual load-carriers; Endless-chain conveyors in which the chains form the load-carrying surface having a load-carrying surface formed by a series of interconnected, e.g. longitudinal, links, plates, or platforms the load carrying surface being formed by plates or platforms attached to a single traction element specially adapted to follow a curved path
-
- 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
- B65G39/00—Rollers, e.g. drive rollers, or arrangements thereof incorporated in roller-ways or other types of mechanical conveyors
- B65G39/10—Arrangements of rollers
- B65G39/20—Arrangements of rollers attached to moving belts or chains
-
- 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
- B65G2201/00—Indexing codes relating to handling devices, e.g. conveyors, characterised by the type of product or load being conveyed or handled
- B65G2201/02—Articles
- B65G2201/0264—Luggage
Definitions
- the invention pertains to a drive chain mechanism for overlapping slat conveyor-s / carousels of closed loop or recirculating type having both horizontal and inclined portions.
- the drive chain loop is located and guided using guide wheels at a central track between two supporting load wheels ⁇ running on the parallel rails.
- the drive chain loop is the main joining and driving component of the conveyor itself and is constructed using either 2-dimensional (2D) chain link assemblies or 3- dimensional (3D) curve ch.ain link assemblies based on the type of conveyor i.e, conveyor having only horizontal curves (2D chains) or conveyor having both horizontal and vertical curves (3D chains) .
- the present invention provides a conveyor system comprising a first pin (18) ; a first link block (11) carrying the first pin (18) ; a first offset bushing (17) on the first pin (18) ,-and a second link block (11) carrying the first offset bushing (17) , the second link block (11) movable with respect to the first link block (11) upon rotation of the first offset bushing (17) with respect to the second link block (11) .
- Fig. 1 is an isometric view of a part of a flat plane type overlapping slat conveyor / carousel
- Fig. 2 is an isometric view of a part of an inclined plane type overlapping slat conveyor / carousel
- Fig. 3 is a view of an oval shaped inclined carousel loop
- Fig. 4 is a view of a continuous loop running at different levels with convex and concave curve sections of a flat carousel;
- Fig. 5 is a sectional view of a flat plane carousel
- Fig. 6 is a sectional view of a inclined plane carousel
- Fig. 7 is a sectional view of the 2-dimensional (2D) curve chain assembly
- Fig. 8 is an isometric view illustrating the assembly of the 2D curve chain
- Fig. 9 is sectional view of the middle offset bush for 2D curve chain
- Fig. 10 is an illustration of how to vary the chain pitch
- Fig. 11 is an illustration of how to pre-tension the chain is achieved
- Fig. 12 is a sectional view of the 3-dimensional (3D) curve chain assembly
- Fig. 13 is an isometric view illustrating the assembly of the 3D curve chain
- Fig. 14 is sectional view of the middle offset bush for 3D curve chain.
- Fig. 15 is illustration of extend of 3D curve chain movements in multi directions.
- Carousel 1 can be a flat plane conveyor as shown in Fig. 1 or an inclined plane conveyor as shown in Fig. 2 running in a continuous loop following a curved travel path designed for the layout of the particular installation.
- Carousel 1 can be a flat plane conveyor as shown in Fig. 1 or an inclined plane conveyor as shown in Fig. 2 running in a continuous loop following a curved travel path designed for the layout of the particular installation.
- a common layout of luggage carousels is oval shaped, a typical arrangement is shown in Fig. 3.
- the present invented design is equally suited to carousels including both convex and concave sections of travel as well as running at multi-levels in a continuous loop as shown in Fig. 4.
- a multi-level design of the carousel becomes a necessity.
- the present invented chain assembly will meet these multi-level carousels requirements .
- Carousel 1 consists of a series of individual planar rubber slats 4 forming an inclined or flat luggage-bearing deck, and each rubber slat 4 is removable attached to and supported by a respective steel slat support member 3 arranged for travel around a track defined by a supporting frame 5.
- Slat support members 3 are respectively attached to link blocks in chain 2 making up a continuous link block chain assembly, which is constrained to travel around a raceway 6 defined in frames 5.
- Chain 2 is driven by a friction type drive unit disposed within the frame 5 in a straight drive unit section of carousel 1.
- Frame 5 is built up from a modular system of mild steel profiles, cross plates and side frame plates, all parts bolted together to form a complete framework of straight, curved and drive unit sections.
- Support elements for frame 5 are provided with adjustable footings 7 in order to level the frame during erection and to maintain the carousel at the appropriate height.
- the framework on the passenger side is fitted with steel cover panels, rubber bumpers and kick plates, whilst the area enclosed by the carousel can be covered with an infill deck, if desired.
- Each slat support 3 is supported by two outer load wheels 8 running on lateral rails provided by frame 5.
- Each slat support is mounted by way of slat support bracket 9 to a respective one of trie link blocks 11 of the chain 2, each link block 11 mounted to float in central raceway 6 by means of a guide wheel 10.
- Raceway 6 is provided by a pair of steel rail profiles running around the entire length of carousel 1 and welded to frame 5.
- Fig. 5 and Fig. 6 illustrates more clearly the floating nature of the chain 2 along with guide wheel 10 in the raceway.
- Figs.7 and 8 shows the components of 2D chain link assembly while Figs. 12 and 13 shows the components of 3D chain link assembly in more detail.
- Chain 2 is made up of a series of identical lightweight die-cast aluminum alloy link blocks 11, interlinked by pin assemblies.
- Each slat support bracket 9 is securely mounted to a respective link block 11 by way of bolts passing through two bolt holes 12 in the block. .
- Each link block 11 features a first end portion 13 and a second end portion 14, provided with vertical through bores 16 at end portion 14 while end portion 13 is provided with a cavity 15 to accommodate specially designed polyurethane offset middle bushing 17.
- the first end portion of one link block 11 has a complementary fit with the second end portion of the next link block 11, whilst allowing rotational movement about the -vertical axis passing through bores 16 and 17 when aligned.
- the through bores thus provide the pivot points for the articulation of the links of chain 2 as it follows its curved path around the carousel .
- each pair of successive link blocks 11 is joined by means of a specially designed vertical pin 18 of mild steel running through aligned through bores 15; 17.
- Bottom and top polyurethane bushing 19 and 20 provide a low friction bearing for rotation about pin 18.
- Bottom bushing 19 is retained by guide wheel 10, which is mounted to the narrowed lower extremity of pin 18 via bearing 21 and retained in place by means of locknut 22.
- Top bushing 20 is retained by way of locknut 23. Facility to hold the pin 18 in place using spanner while tightening the locknut 23 is provided in the pin 18 design for easy assembly of link blocks 11.
- Pig. 9 shows in detail the design of offset middle bushing 17, whose design enables increase or decrease of chain 2 pitches by the offset amount and also simple tensioning of the chain 2 during assembly due to conical bore 17A.
- Fig. 10 shows how the variation in chain pitch length is achieved by simply placing the middle offset bushing 17 in different orientation inside the cavity 15 of the link block 11.
- Fig. 11 explains the tensioning effect achieved while assembling the link blocks 11 due the engagement of conical surface provided in pin 18 inside the conical bore 17A provided in middle offset bushing 17.
- the link block 11 with offset bushing 17 whose bore centerline is pulled in to align with the center line of the bore 16 of the other adjacent link block 11.
- the chain 2 is tensioned after changing the chain pitch to take care of chain elongation problems i.e., the take-up requirement.
- the actual pitch of a chain block can be adjusted to 250mm or 246 mm, thus adjusting the overall length of the chain in order to tension it. Multiplied over the length of the chain this provides a sufficient range of adjustment to take into account installation tolerance, initial tensioning, and all adjustments needed to allow for elongation during the design life of the chain. Chain tensioning is rarely required due to the low wear of the assembly, and can be done easily as explained above.
- the chain assembly described is for a 2 dimensional (2D) curve chains since rotational movement is restricted about the vertical axis along the pin 18 centerline passing the link block bores 15 & 16 thus allowing articulation of the links of chain 2 as it follows the curved paths around the carousel 1 for horizontal curves only.
- this chain has to negotiate the vertical curves also in addition to horizontal curves. So, this chain has to be converted to 3 dimensional (3D) curve chain by replacing the middle offset bushing 17 with a specially designed middle offset bushing 24 incorporated with spherical ball 25 arrangement to get multi directional movements as shown in Figs. 12 and 13.
- the middle offset bushing 24 containing parts A & B will joined incorporating the spherical ball 25 at center and then inserted inside the cavity 15 of the link block 11. Using this link block 11 along with middle bushing 24, the chain 2 will be assembled similar to that already explained above.
- Figs. 12 shows the details of the assembled pin for 3D curve chains and Fig. 13 shows the exploded view of the
- Fig. 14 shows in detail the design of 3D offset middle bushing 24, whose design enables (i) increase or decrease of chain 2 pitches by the offset amount, (ii) simple tensioning of the chain 2 during assembly due to conical bore inside the spherical ball 25 and (iii) multi directional relative movement between bushing 24 and spherical ball 25.
- the centerline of 3D offset block 24 and the centerline of spherical ball bore are assembled with offset in order to increase or decrease chain pitch similar to that envisaged in 2D chain as shown in Fig. 10.
- the conical bore of spherical ball 25 will engage with that provided in pin 18 during the assembly in order to get tensioning effect on the link chains as explained above for 2D chain shown in Fig. 11.
- the chain 2 is tensioned after changing the chain pitch to take care of chain elongation problems i.e., the take-up requirement.
- Fig. 15A-C shows the limitation in the articulation of the link blocks 11 in the 3D curve chain assembly which are restricted by the block design.
- the layout of the carousel loop shall be developed considering the minimum radius of curvatures to be adopted for various curves. '
- the restricted included angle for horizontal curves articulation is 24° and the vertical curves articulation is 12° and lateral twist articulation is 8° as shown in Fig. 15A-C which works out to minimum radius of curvatures for horizontal @ 1,200mm and for vertical @ 2 , 400mm.
- the materials used in the block chain arrangement provide a robust assembly with low weight, requiring minimal maintenance, producing minimal operation noise, and allowing simple pitch adjustment as described above.
- the large aluminum link blocks 11 of chain 2 are very robust, and the design of the chain eliminates the need for lubrication as the movement of parts is between polyurethane and aluminum materials.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chain Conveyers (AREA)
- Medicines Containing Plant Substances (AREA)
- Intermediate Stations On Conveyors (AREA)
- Structure Of Belt Conveyors (AREA)
- Formation And Processing Of Food Products (AREA)
- Screw Conveyors (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/582,727 US7611007B2 (en) | 2004-10-07 | 2004-10-07 | Conveyer system with an offset bush |
EP04775647A EP1796991B1 (en) | 2004-10-07 | 2004-10-07 | Conveyor system |
DE602004028525T DE602004028525D1 (en) | 2004-10-07 | 2004-10-07 | FUNDING SYSTEM |
PCT/SG2004/000326 WO2006038881A1 (en) | 2004-10-07 | 2004-10-07 | Conveyor system with an offset bush |
AT04775647T ATE476382T1 (en) | 2004-10-07 | 2004-10-07 | CONVEYOR SYSTEM |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/SG2004/000326 WO2006038881A1 (en) | 2004-10-07 | 2004-10-07 | Conveyor system with an offset bush |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2006038881A1 true WO2006038881A1 (en) | 2006-04-13 |
WO2006038881A8 WO2006038881A8 (en) | 2006-06-15 |
Family
ID=36142854
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/SG2004/000326 WO2006038881A1 (en) | 2004-10-07 | 2004-10-07 | Conveyor system with an offset bush |
Country Status (5)
Country | Link |
---|---|
US (1) | US7611007B2 (en) |
EP (1) | EP1796991B1 (en) |
AT (1) | ATE476382T1 (en) |
DE (1) | DE602004028525D1 (en) |
WO (1) | WO2006038881A1 (en) |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2011146398A2 (en) * | 2010-05-17 | 2011-11-24 | Globe Composite Solutions, Ltd | Slope plate carrousel carriage frame |
DE102011112397A1 (en) * | 2011-09-03 | 2013-03-07 | Robert Bosch Gmbh | Roller curve for chain conveyors with separate roller carriers |
US9744386B2 (en) * | 2015-03-16 | 2017-08-29 | Gorbel, Inc. | Self-standing fall arrest system |
DE102015004787B3 (en) * | 2015-04-15 | 2016-09-29 | Interroll Holding Ag | Connecting device, trolley and conveyor |
CN105775603B (en) * | 2016-04-19 | 2018-05-15 | 苏州爱特思工业传输系统有限公司 | A kind of Transmission system |
JP6501078B2 (en) * | 2016-04-29 | 2019-04-17 | 株式会社ダイフク | Conveying equipment using traveling vehicle |
EP3269675B1 (en) * | 2016-07-15 | 2020-11-18 | Otis Elevator Company | Transportation element for a people conveyor |
CN108177931B (en) * | 2018-02-02 | 2023-09-22 | 威海广泰空港设备股份有限公司 | Conveying equipment capable of realizing free bending rail conveying goods |
US10450142B1 (en) * | 2018-04-26 | 2019-10-22 | Intelligrated Headquarters, Llc | Conveyor carrier cart |
US10532895B1 (en) * | 2018-08-20 | 2020-01-14 | Intelligrated Headquarters, Llc | Cart coupling assembly |
EP4269290A1 (en) * | 2022-04-25 | 2023-11-01 | Grob-Werke GmbH & Co. KG | Workpiece carrier |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2850149A (en) | 1955-11-17 | 1958-09-02 | Hewitt Robins Inc | Passenger conveyor |
US4050323A (en) * | 1976-01-12 | 1977-09-27 | Anson Thomas I | Pintle-type industrial conveyor chain |
US4909381A (en) * | 1987-07-16 | 1990-03-20 | Gebr. Hennig Gmbh | Shavings conveyor |
US5141379A (en) * | 1990-03-21 | 1992-08-25 | Mahler Dienstleistungs-HmbH Loten - Harten - Anlagenbau | Continuous furnace for the heat-treatment of workpieces |
US6131724A (en) * | 1996-07-25 | 2000-10-17 | Yoshino Kogyosho Co., Ltd. | Conveyor chain apparatus |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2181659A (en) * | 1937-02-05 | 1939-11-28 | Joseph A Gage | Conveyer attachment |
US3554360A (en) * | 1968-08-12 | 1971-01-12 | Seatech Engineering | Conveyor |
US4493680A (en) * | 1982-12-02 | 1985-01-15 | Florkey's Conveyor Service, Inc. | Wear compensating link pin |
US4864975A (en) * | 1987-07-03 | 1989-09-12 | Honda Giken Kogyo Kabushiki Kaisha | Compression ratio-changing device for internal combustion engines |
JP2574039Y2 (en) * | 1993-06-15 | 1998-06-11 | トーヨーカネツ株式会社 | Slat conveyor |
NL9500161A (en) * | 1995-01-30 | 1996-09-02 | Vanderlande Ind Nederland | Transport device. |
FI101098B (en) * | 1996-05-03 | 1998-04-15 | Finnketju Invest Oy | Method of chain use and chain |
DE20114661U1 (en) * | 2001-09-05 | 2002-11-07 | Joh. Winklhofer & Söhne GmbH und Co. KG, 81369 München | Plate conveyor chain |
CA2774912C (en) * | 2002-03-08 | 2016-05-17 | Frost Links, Inc. | Conveyor chain |
US7455471B2 (en) * | 2004-05-19 | 2008-11-25 | Eric M. Gawehn | Eccentric conical fastening system |
-
2004
- 2004-10-07 US US10/582,727 patent/US7611007B2/en active Active
- 2004-10-07 EP EP04775647A patent/EP1796991B1/en active Active
- 2004-10-07 WO PCT/SG2004/000326 patent/WO2006038881A1/en active Application Filing
- 2004-10-07 AT AT04775647T patent/ATE476382T1/en not_active IP Right Cessation
- 2004-10-07 DE DE602004028525T patent/DE602004028525D1/en active Active
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2850149A (en) | 1955-11-17 | 1958-09-02 | Hewitt Robins Inc | Passenger conveyor |
US4050323A (en) * | 1976-01-12 | 1977-09-27 | Anson Thomas I | Pintle-type industrial conveyor chain |
US4909381A (en) * | 1987-07-16 | 1990-03-20 | Gebr. Hennig Gmbh | Shavings conveyor |
US5141379A (en) * | 1990-03-21 | 1992-08-25 | Mahler Dienstleistungs-HmbH Loten - Harten - Anlagenbau | Continuous furnace for the heat-treatment of workpieces |
US6131724A (en) * | 1996-07-25 | 2000-10-17 | Yoshino Kogyosho Co., Ltd. | Conveyor chain apparatus |
Also Published As
Publication number | Publication date |
---|---|
EP1796991A4 (en) | 2008-12-10 |
DE602004028525D1 (en) | 2010-09-16 |
ATE476382T1 (en) | 2010-08-15 |
EP1796991B1 (en) | 2010-08-04 |
US7611007B2 (en) | 2009-11-03 |
WO2006038881A8 (en) | 2006-06-15 |
EP1796991A1 (en) | 2007-06-20 |
US20070029166A1 (en) | 2007-02-08 |
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