GB2200719A - Cast iron conveyor rollers - Google Patents
Cast iron conveyor rollers Download PDFInfo
- Publication number
- GB2200719A GB2200719A GB08702799A GB8702799A GB2200719A GB 2200719 A GB2200719 A GB 2200719A GB 08702799 A GB08702799 A GB 08702799A GB 8702799 A GB8702799 A GB 8702799A GB 2200719 A GB2200719 A GB 2200719A
- Authority
- GB
- United Kingdom
- Prior art keywords
- casing
- iron
- bearing housing
- cast iron
- rollers
- 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.)
- Pending
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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rollers For Roller Conveyors For Transfer (AREA)
- Rolls And Other Rotary Bodies (AREA)
Abstract
A conveyor roller manufactured by spin-casting nodular iron into a tubular casing of the required diameter, cutting the casing to length and securing, for example, by swaging, a grey iron bearing housing into each end of the said casing. As a result of their ductility the rollers are less prone to damage than those formed from cast iron and since the casing can be readily cut to any required length, patterns are not required for each specific length.
Description
"CAST IRON CONVEYOR ROLLERS"
The present invention relates to cast iron conveyor rollers.
Cast iron conveyor rollers are traditionally used in conveyor systems used in the transport of materials that are aggressive to mild steel rollers and in difficult environments since they have a high resistance to both corrosion and abrasion.
Such rollers have, in the past, been manufactured by casting the complete roller and bearing-housing from grey or flake iron in a mould. As a result they are extremely brittle and the variety of size and length of such rollers is restricted since each size or length requires a separate expensive mould.
We have now developed cast iron rollers that are ductile, and that can be readily manufactured in different sizes and to any required length.
Accordingly, the present invention provides conveyor rollers comprising a tubular casing formed from spun cast nodular iron, at each end of which is secured an internal bearing-hoAsing formed from grey iron.
It is preferred that the bearing-housing be an interference fit within the casing and that the housings are secured by swaging of the casing.
One embodiment of the invention will now be described with reference to the accompanying drawings which is a representation of longitudinal section along a diameter of a roller.
In the drawing a roller, generally indicated at 1, comprises an outer casing or shell 2, having bearing-housing members 5 and 6 secured at each end 3 and 4 of shell 2. The casing/bearing-housings are carried on a shaft 7 via roller bearings 8 and 9 which are sealed against the ingress of dirt etc. by rubber seals 10 and 11.
Casing 2 is cut to size from a length of spun cast tubing formed of nodular iron of required diameter. The end portions 3 and 4 are machined out to provide shoulders 13 and 14 against which the bearing-housing members 5 and 6 abut. Bearing-housing members 5 and 6 are cast from grey iron and are an interference fit into ends 3 and 4 of casing 2. After the bearing-housings 5 and 6 have been inserted into the ends of 3 and 4 of casing 2, the said ends are swaged over onto the bearing-housing members to secure the members against outward movment from the casing.
The roller is carried on a shaft 7 by means of roller bearings 8 and 9, which are sealed against the ingress of dirt by rubber seals 10 and 11 that bear against inwardly extending annular lips 15 and 16 of housing members 5 and 6.
The conveyor rollers of the present invention have the advantage that, having been made from spun cast nodular iron, they are ductile and therefore less prone to damage by dropping compared with rollers cast from grey iron. They retain both the abrasion and corrosion resistance of grey iron and ecause the tubes are manufactured in long lengths.
rollers of any specific length can be made without resorting to new patterns. By using grey iron for the manufacture of the internal bearing-housings, the use of the compressive strength characteristics of that material are retained in the roller structure, and because of the ductility of the nodular iron tube the bearing-housings castings can be made an interference fit without fracturing the tube.
Claims (6)
1. A conveyor roller comprising a tubular casing formed from spun cast nodular iron in which is secured at each end thereof an internal bearing housing formed from grey iron.
2. A roller according to claim 1 wherein the bearing housing is an inteference fit in the said tubular casing.
3. A roller according to claim 1 or claim 2 wherein. the bearing housing is secured within the said tubular casing by swaging the casing.
4. A method of manufacturing a conveyor roller comprising spin casting nodular iron to form a tubular casing, cutting the casing to the required length and securing a grey iron bearing housing into each end of the said casing.
5. A method of manufacturing a conveyor roller according to claim 4 wherein each bearing housing is secured by swaging the respective end of the said casing over onto the said housing.
6. A conveyor roller substantially as herein described with reference to the drawing
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB08702799A GB2200719A (en) | 1987-02-07 | 1987-02-07 | Cast iron conveyor rollers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB08702799A GB2200719A (en) | 1987-02-07 | 1987-02-07 | Cast iron conveyor rollers |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB8702799D0 GB8702799D0 (en) | 1987-03-11 |
| GB2200719A true GB2200719A (en) | 1988-08-10 |
Family
ID=10611900
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB08702799A Pending GB2200719A (en) | 1987-02-07 | 1987-02-07 | Cast iron conveyor rollers |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB2200719A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2138433A1 (en) | 2008-06-27 | 2009-12-30 | LINTER Spólka z o.o. | Roller and a method of its manufacture |
| EP2907415A1 (en) * | 2014-02-12 | 2015-08-19 | Rickard Nilsson | Roller for a ware pusher of a slip shelf that acts on goods and pusher |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB323089A (en) * | 1928-11-15 | 1929-12-24 | John Downham & Co 1927 Ltd | Improvements in or relating to hollow rollers |
| GB725493A (en) * | 1952-07-25 | 1955-03-02 | Nordstroems Linbanor Ab | Conveyor rollers |
-
1987
- 1987-02-07 GB GB08702799A patent/GB2200719A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB323089A (en) * | 1928-11-15 | 1929-12-24 | John Downham & Co 1927 Ltd | Improvements in or relating to hollow rollers |
| GB725493A (en) * | 1952-07-25 | 1955-03-02 | Nordstroems Linbanor Ab | Conveyor rollers |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2138433A1 (en) | 2008-06-27 | 2009-12-30 | LINTER Spólka z o.o. | Roller and a method of its manufacture |
| EP2907415A1 (en) * | 2014-02-12 | 2015-08-19 | Rickard Nilsson | Roller for a ware pusher of a slip shelf that acts on goods and pusher |
Also Published As
| Publication number | Publication date |
|---|---|
| GB8702799D0 (en) | 1987-03-11 |
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