WO2009004510A1 - Rrrouleau fou libre de faible poids - Google Patents

Rrrouleau fou libre de faible poids Download PDF

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Publication number
WO2009004510A1
WO2009004510A1 PCT/IB2008/052229 IB2008052229W WO2009004510A1 WO 2009004510 A1 WO2009004510 A1 WO 2009004510A1 IB 2008052229 W IB2008052229 W IB 2008052229W WO 2009004510 A1 WO2009004510 A1 WO 2009004510A1
Authority
WO
WIPO (PCT)
Prior art keywords
bearing
shaft
idler roller
bearings
bearing support
Prior art date
Application number
PCT/IB2008/052229
Other languages
English (en)
Inventor
Martin Granig
Original Assignee
Lorbrand (Pty) 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 Lorbrand (Pty) Ltd filed Critical Lorbrand (Pty) Ltd
Publication of WO2009004510A1 publication Critical patent/WO2009004510A1/fr

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
    • B65G39/00—Rollers, e.g. drive rollers, or arrangements thereof incorporated in roller-ways or other types of mechanical conveyors 
    • B65G39/02—Adaptations of individual rollers and supports therefor
    • 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 
    • B65G39/02—Adaptations of individual rollers and supports therefor
    • B65G39/09—Arrangements of bearing or sealing means
    • 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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C13/00—Rolls, drums, discs, or the like; Bearings or mountings therefor
    • F16C13/02—Bearings
    • F16C13/022—Bearings supporting a hollow roll mantle rotating with respect to a yoke or axle
    • 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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/72—Sealings
    • F16C33/76—Sealings of ball or roller bearings
    • 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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/72—Sealings
    • F16C33/76—Sealings of ball or roller bearings
    • F16C33/80—Labyrinth sealings
    • 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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C19/00—Bearings with rolling contact, for exclusively rotary movement
    • F16C19/02—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows
    • F16C19/04—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly
    • F16C19/06—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly with a single row or balls
    • 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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2326/00—Articles relating to transporting
    • F16C2326/58—Conveyor systems, e.g. rollers or bearings therefor

Definitions

  • THIS invention relates to a lightweight idler roller.
  • a typical idler roller has a central shaft which is supported in use at either end by fixed structures.
  • the shaft itself supports, through appropriate bearings, a hollow cylindrical roll on which a conveyor belt runs.
  • the idler roller must have a lightweight construction to limit the weight which workers must pick up and manhandle during installation and maintenance.
  • the central shaft of the idler roller is a solid steel bar.
  • a hollow central shaft in order to reduce the overall weight of the roller it has also been proposed to use a hollow central shaft.
  • an idler roller comprising:
  • a central shaft in the form of a hollow, swaged tube with bearing support zones towards either end thereof, the bearing support zones having bearing support surfaces formed by centreless grinding;
  • bearings which are mounted on the bearing support zones and which support the roll in rotatable manner relative to the shaft;
  • bearing housings which are carried by the roll and which house the bearings
  • bearing seals located on the ends of the shaft outboard of the bearings
  • end plugs which are press-fitted into the ends of the tube to hold the bearing seals axially in position, the end plugs having portions, extending beyond the ends of the tube, shaped for non-rotatable engagement by idler support structures at either end of the shaft.
  • each end of the shaft includes an end zone which is located outboard of an associated bearing support zone and which is of reduced diameter relative to the associated bearing support zone.
  • the shaft has a central zone with a relatively large diameter and intermediate zones of reduced diameter relative to the central zone located between the central zone and the bearing support zones, the bearing support zones being of reduced diameter relative to the intermediate zones.
  • bearings are ball bearings.
  • each bearing housing has an axially extending, cylindrica! portion within which the associated ball bearing is housed and a generally radially extending portion extending towards the associated bearing support zone, axially inwardly of the associated bearing.
  • the portions of the end plugs which extend beyond the ends of the tube are enlarged relative to portions of the end plugs which are press-fitted into the ends of the tube, the bearing seals being located between the enlarged portions of the end plugs and the bearings.
  • the enlarged portions of the end plugs are formed with diametrically opposed flat surfaces engagable non-rotatably by the idler support structures.
  • Each bearing seal may comprise a stationary, elastomeric seal element mounted fast on the shaft, outboard of the associated bearing, and a rotating metal seal element extending partially about the associated stationary seal element and engaging the associated bearing housing.
  • Figure 1 shows a cross-sectional view of one end of a lightweight idler roller according to this invention.
  • Figure 2 illustrates an end plug used in the idle roller of Figure 1. -A-
  • Figure 1 shows only one end of a lightweight idler roller 10 according to the invention.
  • the other, non-illustrated end of the roller is identical to that seen in Figure 1.
  • the roller 10 has a centra! shaft 12 which includes a hollow tube 14 and end plugs 16.
  • the tube 14 is swaged from an initial tube of constant diameter so as to have a central zone 14.1 and, towards each of its ends, an intermediate zone 14.2, a bearing support zone 14.3 and an end zone 14.4,
  • the zones 14.1 to 14.4 are all of round cross-section and are of progressively decreasing diameter.
  • the bearing support zone 14.3 has an externally bearing support surface which is accurately ground, by centreless grinding, to a diameter selected for the mounting thereon of a ball bearing 17.
  • the roller 10 also includes an outer roll 18 of round cylindrical shape.
  • Bearing housings 20 are fixed by welding 22 to the ends of the roll and extend inwardly as illustrated.
  • Each bearing housing includes an axially extending, cylindrical portion 20.1 and a radially extending portion 20.2 having an inner edge 20.3 spaced from the associated bearing support zone 14.3.
  • the ball bearings 17 are mounted on the bearing support zones 14.3 inside the cylindrical portions 20.1 as shown.
  • the roller 10 also includes annular bearing seals 24.
  • Each seal includes a stationary seal element 26 of elastomeric material and an annular, rotating metal seal element 28.
  • the stationary element 26 has a cylindrical portion 26.1 which extends over and is fast with the shaft 14. As illustrated, this portion extends partially over the end zone 14.4 of the tube and partially over the bearing support zone 14.3. An inner edge of the cylindrical portion
  • the seal elements 28 engage the associated bearing housings and rotate relative to the seal elements 26 in use. It will be understood that the shapes of the seal elements enable them to act in the manner of labyrinth seals to protect the associated bearings 17 against ingress of moisture or particles from the outside.
  • Each end plug 16 has a shank portion 16.1 and an enlarged head portion
  • the diameter of the shank portion 16.1 is selected for the shank to be an interference fit in the associated end zone 14.4 of the tube 14 while the diameter of the head 16.2 is slightly greater than the outside diameter of that portion.
  • the shank portion 16.1 of each end plug is press-fitted into the associated end zone 14.4 such that the head portion 16.2 abuts the end of the tube.
  • the associated seal element 26 is accordingly immobilised axially between the head portion 16.2 and the bearing 17.
  • the projecting ends of the plugs 16, i.e. the head portions 16.2 are engaged by fixed structures at either end of the roller 10 with the flats 16.3 preventing rotation of the shaft.
  • the illustrated structure has a number of advantages compared to prior idler rollers with hollow shafts. Firstly the use of centreless ground bearing support zones or seats 14.3 means that it is not necessary to hold the hollow tube 14 for accurate rotation about its axis during machining, as would be the case in a conventional turning operation. Together with the provision of the reduced diameter swaged zone 14.4, this enables the bearing seat to be prepared quickly and economically. Secondly it is relatively simple procedure to press-fit the plugs 16 into position. When compared to conventional arrangements employing end plugs which are screwed into position it is also easier, with a press-fitting operation, to ensure that the flats are at the correct orientation for engagement by the support structures.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rolls And Other Rotary Bodies (AREA)

Abstract

L'invention concerne un rouleau fou libre de faible poids qui comprend un arbre central ( (12) sous la forme d'un tube creux matricé avec des zones de support de palierroulement ( (14.3) comportant des surfaces de support de palierroulement formées par rectification sans centres vers l'une ou l'autre extrémité. Un rouleau cylindrique creux ( (18) est disposé autour de l'arbre ( (12), et des palierroulements ( (17) sont montés sur les zones de support de palierroulement ( (14.3) afin de supporter le rouleau ( (18) de façon rotative par rapport à l'arbre ( (12). Des boîtiers de palierroulement ( (20) sont portés par le rouleau ( (18) et renferment les palierroulements ( (17). Des joints de palierroulement ( (26) sont disposés sur les extrémités de l'arbre ( (12) à l'extérieur des palierroulements ( (17) et des bouchons d'extrémité ( (16) sont emmanchés à la presse dans les extrémités du tube afin de maintenir les joints de palierroulement ( (26) axialement en position. Ces bouchons d'extrémité ( (16) comportent des parties d'extrémité saillantes ( (16.2) qui sont configurées pour un engagement non-rotatif par des structures de support d'arbre à chaque extrémité de l'arbre ( (12).
PCT/IB2008/052229 2007-07-02 2008-06-06 Rrrouleau fou libre de faible poids WO2009004510A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ZA200704822 2007-07-02
ZA2007/04822 2007-07-02

Publications (1)

Publication Number Publication Date
WO2009004510A1 true WO2009004510A1 (fr) 2009-01-08

Family

ID=39816693

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2008/052229 WO2009004510A1 (fr) 2007-07-02 2008-06-06 Rrrouleau fou libre de faible poids

Country Status (1)

Country Link
WO (1) WO2009004510A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102173341A (zh) * 2011-03-01 2011-09-07 原平市宝丰机械制造有限公司 一种托辊轴承座与辊皮的连接设备及方法
CN102491064A (zh) * 2011-12-02 2012-06-13 天津三岛科技发展有限公司 双储油室排水式密封
CN105253574A (zh) * 2015-11-10 2016-01-20 于明珠 一种可在线盘轴判断轴承状况的皮带改向辊及其使用方法

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE650923C (de) * 1934-05-27 1937-10-05 Eickhoff Geb Um eine feststehende Achse umlaufende Foerderbandtragrolle mit Waelzlagern
FR987860A (fr) * 1949-06-07 1951-08-20 Meyer & Co Maschf Rouleau pour bande transporteuse
GB1556880A (en) * 1978-03-01 1979-11-28 Anderson Strathclyde Ltd Idler rollers and bearing units thereof
DE3611679A1 (de) * 1985-04-10 1986-11-27 Continental Conveyor and Equipment Co., Inc., Akron, Ohio Tragrollensatz
EP0639722A2 (fr) * 1993-08-20 1995-02-22 Precismeca-Montan Gesellschaft für Fördertechnik mbH Palier avec étanchéité pour rouleau de convoyeur
GB2322113A (en) * 1997-02-13 1998-08-19 Alan Anthony Habberley Conveyor roller

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE650923C (de) * 1934-05-27 1937-10-05 Eickhoff Geb Um eine feststehende Achse umlaufende Foerderbandtragrolle mit Waelzlagern
FR987860A (fr) * 1949-06-07 1951-08-20 Meyer & Co Maschf Rouleau pour bande transporteuse
GB1556880A (en) * 1978-03-01 1979-11-28 Anderson Strathclyde Ltd Idler rollers and bearing units thereof
DE3611679A1 (de) * 1985-04-10 1986-11-27 Continental Conveyor and Equipment Co., Inc., Akron, Ohio Tragrollensatz
EP0639722A2 (fr) * 1993-08-20 1995-02-22 Precismeca-Montan Gesellschaft für Fördertechnik mbH Palier avec étanchéité pour rouleau de convoyeur
GB2322113A (en) * 1997-02-13 1998-08-19 Alan Anthony Habberley Conveyor roller

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102173341A (zh) * 2011-03-01 2011-09-07 原平市宝丰机械制造有限公司 一种托辊轴承座与辊皮的连接设备及方法
CN102491064A (zh) * 2011-12-02 2012-06-13 天津三岛科技发展有限公司 双储油室排水式密封
CN105253574A (zh) * 2015-11-10 2016-01-20 于明珠 一种可在线盘轴判断轴承状况的皮带改向辊及其使用方法

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