WO2002012756A1 - Poulie multi-blocage - Google Patents

Poulie multi-blocage Download PDF

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Publication number
WO2002012756A1
WO2002012756A1 PCT/SG2001/000149 SG0100149W WO0212756A1 WO 2002012756 A1 WO2002012756 A1 WO 2002012756A1 SG 0100149 W SG0100149 W SG 0100149W WO 0212756 A1 WO0212756 A1 WO 0212756A1
Authority
WO
WIPO (PCT)
Prior art keywords
pulley
locking
components
locking pulley
item
Prior art date
Application number
PCT/SG2001/000149
Other languages
English (en)
Inventor
Yeow Kiang Tan
Original Assignee
Covington Pte 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 Covington Pte Ltd. filed Critical Covington Pte Ltd.
Priority to AU2001272884A priority Critical patent/AU2001272884A1/en
Publication of WO2002012756A1 publication Critical patent/WO2002012756A1/fr

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
    • F16H55/00—Elements with teeth or friction surfaces for conveying motion; Worms, pulleys or sheaves for gearing mechanisms
    • F16H55/32—Friction members
    • F16H55/36—Pulleys
    • F16H55/46—Split pulleys
    • 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
    • F16H55/00—Elements with teeth or friction surfaces for conveying motion; Worms, pulleys or sheaves for gearing mechanisms
    • F16H55/32—Friction members
    • F16H55/36—Pulleys
    • F16H55/40—Pulleys with spokes
    • 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
    • F16H55/00—Elements with teeth or friction surfaces for conveying motion; Worms, pulleys or sheaves for gearing mechanisms
    • F16H55/32—Friction members
    • F16H55/36—Pulleys
    • F16H55/48—Pulleys manufactured exclusively or in part of non-metallic material, e.g. plastics

Definitions

  • This invention relates to a method of manufacturing Multi-locking Pulley.
  • Multi-locking Pulley such as used in the industrial 10. manufacturing, construction, agriculture, oil and gas, automotive and general industries. Some of the example can be referred to figure 11 & 12.
  • sand cast iron is the 0 preferred method of manufacturing pulley in the present time before this invention of Multi-locking Pulley
  • Sand casting of iron pulley involves the placement of a particular pulley patent (general aluminium mould ) into casting sand, which is packed around the aluminium pulley mould.
  • the mould, and hence the pulley eventually manufactured, must be tapered ready removal of the mould from the packed sand.
  • the sand might include inserts for the pulleys.
  • the hot iron is then poured into the sand mould. Once the metal has cooled sufficiently, the sand mould is broken and the rough pulley cast removed.
  • the pulley has to be machined to the desired pulley sleeve size.
  • the pulley is sent to apply putty filling up the holes caused by bubble during the casting.
  • the putty also requires sanding down manually by sandpaper before sending to the next process; which is painting with a coat of paint.
  • the cast iron pulleys are also heavy because they are generally cast in full form with the core and pillar and sleeves all in one piece. An example of this can be referred to figure 13.
  • a typical cast iron pulley through casting process is extremely heavy due to the limitation of casting process requiring thicker wall all round of the entire pulley.
  • the destruction of the mould insert every time a pulley is manufactured is expensive. Also expensive is the labour to provide the extra machining of the pulley one piece by one piece.
  • D bolts such as Alan Keys are used to tighten up the components to make it into a fully assembled Multi-locking Pulley.
  • the inventor recognized that a new Multi-locking Pulley could be produced by extrusion process with all its advantages.
  • extrusion process is applied to the Multi-locking Pulley of: -
  • Multi-locking Pulley can be extruded are categorized into 2 categories. That is: -
  • This Multi-locking Pulley system also provides wide selection of combinations one can achieve by selecting different Pulley Core to different size of pulley and different number of sleeves as well as different sizes of sleeves.
  • An example of this Pulley Core is shown in figure 10
  • a multiple sleeve pulley may be manufactured by extrusion process, or in alternative embodiments of the whole range of pulley with multiple Disc and sleeves and sleeve sizes may be extruded at one time.
  • An example of this multi sleeves are shown in figure 7 & 8. Herewith showing the varieties of Pulley Disc and Pulley Sleeves respectively.
  • extrusion Multi-locking Pulley as opposed to the whole pulley casting is that the extrusion process is considerably easier.
  • the extrusion has less mass thus is easier to handle in terms of sheer size and weight.
  • Multi-locking pulley is extruded into a few components, then there must be provided a means by which they can be joined together to form a single pulley.
  • Means an attachment may be through a conventional method such as Alan Key Screw, Bolts, Bracket and so forth. Such attachment are illustrated in figure 1, 3 & 4 item no. 1
  • the extrusion components is made so that it has complimentary teethes and indentations, readily allowing the individual components to slot in to one another.
  • inter-locking connection a few choices of inter-locking connection can be employed. Such examples are as that: -
  • the Multi-locking Pulley may be made of variety of material such as aluminium & plastic.
  • Composite and ceramic may also be used. But however it may also have inferior material strength, which is not good for such pulley applications. It should be appreciated with the conventional cast iron pulley manufacturing method limits to each pulley, which are of different models with different sizes of pulley and different number of sleeves and different sizes of sleeves. The present invention ensure that there is uniformity of design and sizes and thus efficiency in the manufacturing and management process.
  • Another advantage of the present invention is that the core of the pulley ( Pulley Core shown in figure 10 ) is extruded as one component.
  • This provide an enormous advantage over conventional cast iron pulley because in the event the Multi-locking Pulley needs to be replaced.
  • the conventional pulley too need to be re-bore and this is normally done in another workshop, which is a slow process.
  • the extrusion manufacturing process requires only a small number of die ( press mould ) to extrude a large selection of Multi-locking Pulley. Thus cheaper start up cost. Where else the conventional cast iron pulley requires one mould each for every model they so desire to manufacture.
  • the extrusion manufacturing process can be start up much faster with only a handful of die to be made for the large selection of Multi-locking Pulley. These dies can be machined by Computerized Machine Center. Whereas the conventional cast iron pulley will take a far much longer time to start up a factory due to the fact that each mould is hand crafted out of wood than they are cast into aluminium moulds. And this mould must be made for each and every model. And to provide the full range of pulley, they must take a long time to complete this task.
  • the extrusion manufacturing process provides the Multi-locking Pulley to be produced in mass quantity.
  • This genuine concept of inter-locking the components allows the repetition of similar components to be used.
  • a possibility to extrude components in large quantity which is fast and cheap.
  • the conventional cast iron pulley manufacturing is limited to produce the pulley one by one, which is slow and expensive.
  • the extrusion manufacturing process is done in mass production and hence requires very small number of manpower. Whereas the conventional cast iron pulleys are manufactured piece by piece and thus uses a very large workforce.
  • the extrusion manufacturing process is made in mass production. And also due to the Multi-locking system, the components are small and these all lead to a requirement of a much smaller factory floor space. This is a vast different comparing to the cast iron pulley manufacturing where by each and every Pulleys are cast in full form occupying a large floor space to do sand casting.
  • the extrusion is manufactured without any toxic fumes, no smelting and all waste are recyclable, thus it is friendly to the environment. Whereas the iron casting furnaces need cocking coal of which there will be a world shortage. Burning of the coal produces " cupola emissions " which is an environmentally disastrous gas.
  • extrusion manufacturing process provide mass production, good component tolerances and small manpower has made it all easier to manage comparing to cast iron pulley where the manufacturing process is slow,
  • Pulleys are cast out in rough and having a large workforce has contributed to a complex and difficult factory to manage. H Require to have less inventory
  • the Multi-locking Pulley system has this great advantage of using common parts. Therefore the require inventory is very much smaller to carry if you compare to the conventional cast iron pulley where the manufacturer required to carry a very large selection of pulley of different model to satisfy his customer.
  • the extrusion manufacturing process provides mass production with minimal manpower thus it provides a high turnover and low overhead. This ensures the manufacturer to gain bigger profit. Unlike the conventional cast iron pulley manufacturer, which provides the opposite, that is low turnover and high overhead and making only small profit.
  • the extrusion manufacturing process produces excellent components of the Multi-locking Pulley and does not require further surface coating or painting, whereas the conventional cast iron pulley requires a coat of paint.
  • a single extrusion tool die may be used to make variable models of Multi -locking Pulley of different sizes.
  • the ability to use alternate material to cast iron means that the pulley can be much lighter in weight which amongst other things gives better fuel and electric efficiency to the prime mover that uses Multi-locking Pulley.
  • the extruded Multi-locking Pulley provides a more balanced pulley. Unlike the conventional cast iron pulley which is subject to potholes caused during the process of gravity casting. A balanced Multi-locking Pulley will give better efficiency to the prime mover and equipment.
  • Multi-locking Pulley All the components of the Multi-locking Pulley are small and can be packed in a small box, which provides a great advantage to save storage and shipping space.
  • Figure 1 illustrate a preferred example of a Multi-locking Pulley constructed in accordance with the invention for larger range of pulleys good for the normal pulley application.
  • Item no. 1 shows the Alan Key Screw
  • Item no. 2 shows an example of a Pulley Sleeve Item no. 3 shows an example of the Pillar Joint Item no. 4 shows an example of Pulley Core
  • Figure 2 illustrate the complete assembly of a Multi-locking Pulley after all the components are held together.
  • FIG. 3 illustrate a preferred example of Multi-locking Pulley constructed in accordance with the invention for the medium size pulleys good for the normal pulley application
  • Picture A illustrate 3 piece of Pulley Sleeve item no. 2 and 3 pieces of Pillar Joint item no. 3 are about to slot in together to make the shape of a pulley.
  • Picture B illustrate the Pulley Core item no. 4 also about to slot into the center of the Multi-locking Pulley.
  • Picture C illustrate the 15 pieces of Alan key Screw item no. 1 used for tightening up all the components.
  • Picture D illustrate an example of a complete assembly of Multi-locking Pulley.
  • Figure 4 illustrate a preferred example of Multi-locking Pulley constructed in accordance with the invention for the smaller pulleys good for the normal pulley application.
  • Picture C illustrate an example of a complete assembly of a
  • Figure 5 illustrate some example of the teeth arrangement that is used for inter-locking the components found the Multi-locking Pulley system.
  • Picture no. 1 shows the Dove Tail teeth arrangement Picture no. 2 shows the Tongue and groove arrangement Picture no. 3 shows the Star teeth arrangement
  • FIG. 6 illustrate that in the Multi-locking Pulley system, a common Pulley Core item no. 1 can be used to suit multiple choice of Multi-locking Pulleys of various pulley sizes, various pulley sleeve sizes and various number of pulley sleeves shown here item no. 2
  • FIG. 7 is the perspective view of some example of the Pulley Disc item no. 1. In the Multi-locking Pulley system, Pulley Disc are made
  • FIG 8 is the perspective view of some example of the Pulley Sleeve used in various pulley sizes in the range of Multi-locking Pulley item no. 1.
  • Pulley Sleeve are made: - 1 in various pulley sizes and length as shown in item no. 4 2 in various sleeve sizes as shown in item no. 2 and
  • Figure 9 is the perspective view of some of the Pillar Joints used the Multi-locking Pulley system. In this system the Pulley Joints are made: -
  • Figure 10 is the perspective view of some example of the Pulley Core used in the Multi-locking Pulley system. In this system the
  • Pulley Core are made of various sizes suitable for different pulley sizes as well as suitable for various sleeves sizes and various number of sleeves.
  • Figure 11 show some of the example of the application of the Multi- locking Pulley.
  • Picture A illustrates a Multi-locking Pulley item no. 1 can be fitted to a prime mover item no. 2, which is an electrical motor.
  • Picture B illustrate a Multi-locking Pulley item no. 1 can be fitted to a prime mover item no. 2, which is a diesel engine
  • Multi-locking Pulley They are: -
  • Figure 13 Show some example of the conventional cast iron pulleys.
  • the Multi-locking Pulley has been designed to have a substantially constant cross section to readily allow the component to be extruded.
  • the extrusion provides the flexibility to cut to any desired length. This process can be carried out by using a circular or hack saw.
  • the multi-locking Pulley has minimal additional machining, namely, the groove on the sleeve of the Pulley Sleeve. This process can be carried out on a CNC lathe machine
  • the Multi-locking Pulley has been constructed to provide a number of interlocking joints, which enable the components to be slot in together with teethes arrangement. These components are tighten ( held ) up by mean of Alan Key Screw.
  • Multi-locking Pulley includes a slot in Pulley Core as illustrated in figure 10
  • Multi-locking Pulley includes a Pulley Disc as illustrated in figure 7
  • Multi-locking Pulley includes a few pieces of Pulley Sleeve as illustrated in figure 8.
  • Multi-locking Pulley includes a few pieces of Pillar Joint as illustrated in figure 9.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Pulleys (AREA)

Abstract

Cette invention a trait à un procédé de fabrication de poulie multi-blocage comportant les opérations suivantes : (A), extrusion d'une certaine longueur d'un matériau constituant une partie de la poulie multi-blocage, (B), coupe du matériau, une fois la longueur désirée atteinte, (C), sélection des dimensions souhaitables et convenables pour chaque composant de la poulie et mise en place de ceux-ci afin de mettre en forme ladite poulie, (D), assemblage de tous les composants par emboîtement et, (E), blocage de tous les composants à l'aide d'un boulon (vis Alan Keys) afin de former le produit final.
PCT/SG2001/000149 2000-08-03 2001-07-16 Poulie multi-blocage WO2002012756A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2001272884A AU2001272884A1 (en) 2000-08-03 2001-07-16 Multi-locking pulley

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
MYPI20003535 2000-08-03
MYPI20003535 2000-08-03

Publications (1)

Publication Number Publication Date
WO2002012756A1 true WO2002012756A1 (fr) 2002-02-14

Family

ID=19749468

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SG2001/000149 WO2002012756A1 (fr) 2000-08-03 2001-07-16 Poulie multi-blocage

Country Status (2)

Country Link
AU (1) AU2001272884A1 (fr)
WO (1) WO2002012756A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1610035A3 (fr) * 2004-06-24 2006-04-05 Innova Patent GmbH Poulie à câble pour installation de téléphérage

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2168452A (en) * 1984-12-15 1986-06-18 Schaeffler Waelzlager Kg Tubular member composed of a polymeric material
AU6766987A (en) * 1986-01-22 1987-07-23 Dresser Industries Inc. Sheave with replaceable rim
US4749375A (en) * 1983-10-21 1988-06-07 Aubecq Auxi S.A. Method for producing a multiple V-groove pulley and a pulley produced by said method

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4749375A (en) * 1983-10-21 1988-06-07 Aubecq Auxi S.A. Method for producing a multiple V-groove pulley and a pulley produced by said method
GB2168452A (en) * 1984-12-15 1986-06-18 Schaeffler Waelzlager Kg Tubular member composed of a polymeric material
AU6766987A (en) * 1986-01-22 1987-07-23 Dresser Industries Inc. Sheave with replaceable rim

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1610035A3 (fr) * 2004-06-24 2006-04-05 Innova Patent GmbH Poulie à câble pour installation de téléphérage

Also Published As

Publication number Publication date
AU2001272884A1 (en) 2002-02-18

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