EP1597176A1 - Courroie a cloisons d'aerage - Google Patents

Courroie a cloisons d'aerage

Info

Publication number
EP1597176A1
EP1597176A1 EP03781129A EP03781129A EP1597176A1 EP 1597176 A1 EP1597176 A1 EP 1597176A1 EP 03781129 A EP03781129 A EP 03781129A EP 03781129 A EP03781129 A EP 03781129A EP 1597176 A1 EP1597176 A1 EP 1597176A1
Authority
EP
European Patent Office
Prior art keywords
module
belt
pin
brattice
modules
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.)
Withdrawn
Application number
EP03781129A
Other languages
German (de)
English (en)
Other versions
EP1597176A4 (fr
Inventor
Bruce Hyndman Henley
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.)
Henley Industries Ltd
Henley Ind Ltd
Original Assignee
Henley Industries Ltd
Henley Ind Ltd
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 Henley Industries Ltd, Henley Ind Ltd filed Critical Henley Industries Ltd
Publication of EP1597176A1 publication Critical patent/EP1597176A1/fr
Publication of EP1597176A4 publication Critical patent/EP1597176A4/fr
Withdrawn legal-status Critical Current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
    • 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
    • B65G17/48—Controlling attitudes of load-carriers during movement
    • 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
    • B65G17/08—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 surface being formed by the traction element
    • 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
    • B65G17/46—Means for holding or retaining the loads in fixed position on the load-carriers, e.g. magnetic
    • 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
    • B65G2201/06—Articles and bulk
    • 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
    • B65G2207/00—Indexing codes relating to constructional details, configuration and additional features of a handling device, e.g. Conveyors
    • B65G2207/38—Pin used as carrier of one article

Definitions

  • the present invention relates to an improved brattice belt.
  • brattice belt means an elevator conveyor belt which is provided with a plurality of spaced protrusions and which typically is used for the transport of fibrous materials (such as wool, wood fibre, shredded paper, metal turnings and the like) from a loosely packed bulk supply.
  • fibrous materials such as wool, wood fibre, shredded paper, metal turnings and the like
  • brattice belt there are a number of existing types of brattice belt currently in use; these are described briefly with reference to accompanying Figures 1-3.
  • Fig. 1 shows, in plan view, a design of brattice belt which has been used for many years.
  • the brattice belt 2 comprises two parallel roller chains 5,6 with a series of parallel, spaced, stainless steel laths 7 bolted between them, with the laths extending perpendicular to the length of the chains 5,6.
  • Each of the laths 7 carries a series of stainless steel pins 8 spaced along the length of the lath and welded to the lath so as to protrude from the upper surface of the lath at an acute angle to the lath.
  • the belt 2 extends between two spaced pairs of drive sprockets (not shown) which engage the chains 5,6 to drive the belt.
  • a mass of loose fibrous material e.g. wool
  • smaller clumps of fibres are teased out of the mass by the pins 8 and carried up to the other end of the belt.
  • a continuous flat flexible belt 9 carries a series of spaced rigid plastic laths 10 which are bolted to the belt by bolts 11 ; the laths 10 extend perpendicular to the direction of movement of the belt.
  • a series of spaced stainless steel pins 12 are driven through the thickness of the lath to extend at an acute angle to the surface of the belt.
  • This brattice belt functions in the same general manner as that described with reference to Fig. 1 , except that the drive sprockets engage the gaps 13 between adjacent laths 10 to drive the belt.
  • This design has the advantage that it does not require lubrication, but the construction is expensive and once the belt is fully assembled, is relatively inflexible. Further, if any part of the belt is damaged, the whole belt must be repaired or replaced.
  • Fig. 3 shows a side view of part of a third type of brattice belt, sold under the trade mark "Flextrak”.
  • a brattice belt is assembled from a series of modules 14 which are moulded from a rigid polymer and are hinged together using moulded-in pins 15. Each pin 15 engages a hook 15a moulded on one end of the module, to link adjacent modules together.
  • Each module 14 is formed with a cavity 16 on its underside, which can engage a drive sprocket 17, only part of which is shown.
  • Each module 14 provides a protruding boss 18 on its upper surface; a stainless steel pin 19 is moulded into the boss 18 so as to protrude from the upper surface of the boss at an acute angle to the plane of the belt when assembled.
  • the boss 18 greatly reduces the effective length of the pin 19 and thus reduces the ability of the pin to pick up fibrous material
  • the boss 18 tends to catch material being transported, and to retain such material, since any material caught by the boss does not slide off the boss as readily as off the pins.
  • the modules are rigid, and although the belt can pivot at the joints between the modules, overall the belt is rather a rigid construction which does not engage the drive sprockets efficiently.
  • the rigidity of the modules means that if a pin is overloaded, all the load is on the pin, which may break.
  • the present invention provides a module for a brattice belt, said module being made of flexible material and providing a substantially flat first surface from which protrude a plurality of spaced pins, one end of each pin extending from said first surface with the longitudinal axis of the pin at an acute angle to the plane of the first surface, the other end of each pin being mounted in a rib formed on a second surface of the module opposite to said first surface, said second surface also providing means for hingedly securing modules together, said securing means being spaced from said rib.
  • the present invention further provides a brattice belt made of the above modules, the modules being hinged together to form a continuous loop.
  • the module is made of a polyurethane elastomer with rubber like properties and is very flexible.
  • the module would be sufficiently flexible to allow a pin to deflect through at least 10°, preferably 20° - 30°, relative to the plane of the belt, without any damage to the module material.
  • the module is substantially rectangular in plan, and securing means in the form of series of spaced bosses are provided along each of two opposed edges.
  • Fig. 4 is a plan view of the brattice belt module in accordance with a first embodiment of the present invention
  • Fig. 5 is a sectional side view on line 5 5 of Fig. 4, on a larger scale;
  • Fig. 6 is a plan view of brattice belt modules in accordance with Fig. 4, assembled to form a section of belt;
  • Fig. 7 is a diagrammatic side view showing a brattice belt in accordance with Fig. 6 engaged with drive sprockets;
  • Fig. 8 is a side view showing the engagement of part of the brattice belt with a drive sprocket, on a larger scale;
  • Fig. 9 is a plan view of a brattice belt module in accordance with a second embodiment of the invention.
  • Fig. 10 is a section on line 10-10 of Fig. 9;
  • Fig. 11 is a diagrammatic side view showing a brattice belt in accordance with Fig. 9 and 10, with a drive drum;
  • Fig. 12 is a cross-section on line 12-12 of Fig. 10.
  • a brattice belt module 30 is moulded from a suitably flexible, tough, impact and abrasion resistant plastics material.
  • a suitably flexible, tough, impact and abrasion resistant plastics material is polyurethane with Durometer in the range 80-95 Shore A.
  • Each module 30 provides a smooth upper surface 31 from which a pin 32 protrudes at an acute angle a (typically about 60 degrees) to the surface.
  • Each pin 32 is made of stainless steel or plastics and is moulded into the module, with the base 33 of the pin encapsulated in a rib 34 formed on the underside of the module.
  • the rib 34 is equidistantly spaced between hinge bosses 35,36 formed along each edge of the module 30.
  • the sides of the rib 34 and the edges of the bosses 35,36 together form the sides of a pair of parallel indentations 37 which extend down the length of each module.
  • Each indentation 37 is dimensioned to engage the teeth 38 of a drive sprocket 39. As shown in Figs. 7 and 8, each indentation 37 receives a sprocket tooth, and each rib 34, and each boss 35,36, engages one of the indentations 42,43 between the socket teeth.
  • the indentations 37 also contribute to the flexibility of the module.
  • the hinge bosses 35,36 extend outwards from each edge of the module (see Fig. 4) to form a castellated edge, with the row of bosses 35 along one edge staggered relative to the row of bosses 36 along the opposite edge.
  • Modules are made to a standard length (e.g. 300 mm) and if a wider belt is required, modules are butted together side by side.
  • the gaps between adjacent bosses along each edge are slightly larger than the width of the bosses, so that each module can be joined to the preceding and succeeding modules in the belt by inserting the hinge bosses along each edge of the first module into the gaps between the hinge bosses along the opposite edge of each adjacent module.
  • the modules are hinged together in this position by inserting a hinge pin 40 through the aligned apertures of the bosses.
  • the hinge pins are retained by internal protrusions formed in the end boss apertures of the end modules.
  • modules are assembled in this way to form a completed brattice belt 41 (a closed loop) of the required length.
  • the modules are assembled in a "brick" pattern, so that when assembled, each row of pins 32 across the width of the belt is half-pitch out of line with the immediately succeeding and preceding rows. In use this means that material missed by one row of pins tends to get caught by the next.
  • Modules as illustrated in Figs. 4 and 5 may be used for the whole of the belt or, as shown in Fig. 6, the longitudinal edges of the belt may be formed from right-hand and left-hand modules 30a/30b, at least the outer portions of which do not carry pins, so that there are no pins along the edges of the belt.
  • the above described brattice belt is driven by banks of sprocket wheels at each end of the run of the belt, in known manner.
  • the teeth 38 of a sprocket 39 engage the indentations 37 and the ribs 34 and bosses 35,36 engage the indentations 42,43 between the teeth 38.
  • the indentations 43 preferably are shallower and more rounded than the indentations 42, to accommodate the shape of the bosses 35 and 36.
  • brattice belt embodiment shown in Figs. 9-12 is closely related to the embodiment of Figs. 4-8, but is designed to be driven by flat surfaced drive drums, rather than by sprockets.
  • a brattice belt module 50 has a smooth upper surface 51 from which moulded in pins 52 protrude at an acute angle a (typically about 60°) to the surface 51.
  • the base 53 of each pin is encapsulated in a rib 54 formed on the lower surface of the module.
  • the base 53 of each pin is formed with a series of spaced ribs 53a to increase the contact surface between the base of the pin and the surrounding material of the rib 54.
  • the rib 54 is equidistantly spaced between hinge bosses 55,56 formed on the lower surface of the module.
  • the sides of the rib 54 and the edges of the bosses 55,56 together form the sides of a pair of parallel indentations 57 which extend the length of the module.
  • the lower surface of the rib lies in a plane lower than the lower surfaces of the bosses
  • the lower surface of the rib 54 lies in the same plane as the lower surface of the bosses 55,56.
  • the indentations 57 are suitably dimensioned to engage the teeth of a drive sprocket in the event that the belt is to be used with a drive sprocket instead of a drum.
  • the hinge bosses 55,56 extend outwards from each of the long edges of the module to form castellated edges, with the row of bosses 55 opposite the row of bosses 56.
  • the pins 52 are mounted on the module equidistantly between each pair of opposed bosses 55,56. This is considered to be a superior arrangement to that shown in Fig. 6, since the area of the module between the opposed pairs of bosses 55,56 is the strongest portion of the module.
  • the pins 32, 52 may be of the type shown in Figs. 4-8, i.e. the circular cross-section with tapered points, or may be of the type shown in Figs. 10 and 12, with an elliptical cross-section smoothly tapering to a rounded point.
  • Figs. 10 and 12 give maximum penetration into fluffy masses such as wool; this assists with wool teasing and carding.
  • the elliptical cross-section gives a maximum cross-sectional area, and hence a maximum bending resistance whilst retaining a "sharp" profile. Further, the elliptical shape of the leading edge reduces the load on the pin if the pin comes into contact with a foreign object.
  • the pins In prior art brattice belts, the pins usually were made of steel, because of the comparatively high loading on the pin.
  • plastics pins are available as an alternative because the flexibility of the modules greatly reduces the overall loading on each individual pin:- if an individual pin becomes overloaded, the portion of the module to which that pin is attached flexes to allow the pin to deflect and shed all or part of its load.
  • the degree of flexibility of the module is such that the pin can deflect relative to the plane of the belt through at least 20°, preferably 30°, when overloaded.
  • the pin does not bend or break if overloaded:- the overload is accommodated by the flexibility of the module material.
  • the flexibility of the module material, combined with the hinge connection between each row of modules, means that a belt made up of the modules can "drape" over drive sprocket or drive drums to give a good positive driving engagement.
  • brattice belt modules are relatively inexpensive to manufacture and are quick and easy to assemble and disassemble. Also, any damaged or defective modules can be individually replaced in the belt.
  • the module can be designed with a substantially flat outer surface (important to avoid transported material becoming lodged on the belt) but with a comparatively large volume of material holding the pin, so that the pin is very securely held.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Belt Conveyors (AREA)
  • Chain Conveyers (AREA)

Abstract

L'invention concerne un module (50) destiné à une courroie à cloison d'aérage et une telle courroie fabriquée à partir de ces modules (50). Les modules (50) sont fabriqués à partir d'un matériau souple et présentent une première surface sensiblement plane (51) à partir de laquelle plusieurs aiguilles espacées (52) font saillies. Une extrémité de chaque aiguille (52) s'étend à partir de la première surface (51) avec un angle d'environ 60° par rapport à la surface (51), l'autre extrémité (53) de l'aiguille (52) est montée dans une nervure (54) formée sur une seconde surface du module (50), cette seconde surface fournissant également des organes (55, 56) permettant l'articulation des modules (50) entre eux.
EP03781129A 2002-12-16 2003-12-15 Courroie a cloisons d'aerage Withdrawn EP1597176A4 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
NZ52320402 2002-12-16
NZ52320402A NZ523204A (en) 2002-12-16 2002-12-16 Spiked conveyor belt
PCT/NZ2003/000275 WO2004054903A1 (fr) 2002-12-16 2003-12-15 Courroie a cloisons d'aerage

Publications (2)

Publication Number Publication Date
EP1597176A1 true EP1597176A1 (fr) 2005-11-23
EP1597176A4 EP1597176A4 (fr) 2006-03-22

Family

ID=31987651

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03781129A Withdrawn EP1597176A4 (fr) 2002-12-16 2003-12-15 Courroie a cloisons d'aerage

Country Status (4)

Country Link
EP (1) EP1597176A4 (fr)
AU (1) AU2003288823A1 (fr)
NZ (1) NZ523204A (fr)
WO (1) WO2004054903A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2592580C (fr) * 2005-01-03 2012-02-21 Laitram, L.L.C. Convoyeur a bande a raclettes dont certaines sont segmentees pour permettre un transfert sans discontinuite
FR2941220B1 (fr) * 2009-01-19 2015-10-02 Macanique Et Chaudronnerie De L Atlantique Convoyeur a tapis sans fin, pourvu de griffes escamotables.
GB201819095D0 (en) * 2018-11-23 2019-01-09 Wellwaij Belting Conveyor belt system

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0175483A1 (fr) * 1984-08-20 1986-03-26 The Laitram Corporation Bande de transport avec des éléments convoyants à insérer et sélectionner

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4718541A (en) * 1985-11-01 1988-01-12 Wilding Edwin L Tobacco feeder with slat conveyors
IT230793Y1 (it) * 1993-09-15 1999-07-05 Regina Ind Spa Catena di trasporto con nervature
NL1013510C2 (nl) * 1999-11-05 2001-05-08 Bouwe Prakken Werkwijze en inrichting voor het vormen van een multiverpakking bestaande uit een grote zak uit foliemateriaal waarin meer dan zes met chips of ander materiaal gevulde zakjes zijn verpakt.
DE10017156B4 (de) * 2000-04-06 2011-09-15 Gebr. Graef Gmbh & Co Kg Förderkette für eine Fördereinrichtung einer Scheibenablegevorrichtung einer Aufschnittschneidemaschine
GB2365401B (en) * 2000-07-04 2004-12-01 David Booth Weston Conveyor/elevator web
US6467610B1 (en) * 2001-10-02 2002-10-22 The Laitram Corporation Modular conveyor belts with pin-retained attachments

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0175483A1 (fr) * 1984-08-20 1986-03-26 The Laitram Corporation Bande de transport avec des éléments convoyants à insérer et sélectionner

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2004054903A1 *

Also Published As

Publication number Publication date
AU2003288823A1 (en) 2004-07-09
EP1597176A4 (fr) 2006-03-22
WO2004054903A1 (fr) 2004-07-01
NZ523204A (en) 2004-02-27

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