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US 4,290,761 AGranted
Lagging body for belt conveyor pulley
AssigneeNippon Tsusho Kabushiki Kaisha
InventorMutsuo Suginaka
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AssigneeNippon Tsusho Kabushiki Kaisha
InventorMutsuo Suginaka
Estimating the term…
A lagging body for a belt conveyor pulley comprises a wide and long rubber substrate and a number of rectangular or square small plate-like ceramic lagging elements aligned in the lateral and longitudinal directions and secured on the surface of said wide and long rubber substrate having a given thickness, wherein a lagging element is produced by adding an inorganic bonding agent essentially consisting of glassy material to ceramic particles, molding the resultant particles into a rectangular or square small plate-like article and firing or sintering the small plate-like article, and a number of the lagging elements are aligned on the surface of a wide and long length rubber substrate in the longitudinal and lateral directions and secured thereon. A free size lagging body is available to secure onto the outer periphery of a pulley drum by free size for repairing the pulley drum so as to eliminate inconvenience caused by the exchange of damaged pulley and wastefulness of time for waiting for the supply of new pulley.
A lagging body available for a belt conveyor pulley, comprising, a rubber substrate, a number of small plate-like ceramic lagging elements aligned in the lateral and longitudinal directions and secured on the surface of said rubber substrate, wherein said lagging element consists of 80-90% by weight of ceramic particles added with 20-10% by weight of an inorganic bonding agent selected from silica, sodium silicate and glaze of glassy material.
A lagging body available for a belt conveyor pulley, comprising a metal substrate having a trough-like cross section and divided into several sections so as to detachably secure around the outer periphery of a metal pulley drum, a rubber substrate secured on said metal substrate, a number of small plate-like ceramic lagging elements aligned in the lateral and longitudinal directions and secured on said rubber substrate.
A pulley comprising a pulley drum, a lagging body secured around the outer periphery of the pulley drum by a bonding agent, said lagging body comprising a number of small plate-like ceramic lagging elements on the surface of a rubber substrate closely aligned side by side to each other in the lateral and longitudinal directions and secured on said substrate.
Dependencies are inferred from the claim text.
Drawings are temporarily unavailable. Open the PDF at USPTO
Adaptations of individual rollers and supports therefor: other adaptations of sleeves
Pulley making: assembly
Continuous two dimensionally sectional layer: glass, ceramic, or metal sections [e.g., floor or wall tile, etc.]
Transport or storage devices
Term ended 14 Jun 1999 (estimated)
USPTO file history isn’t available for this patent, so only indexed dates are shown.
The present invention relates to a lagging body for a belt conveyor pulley.
In a conventional belt conveyor device, a rubber lining has been widely used on the outer periphery of the belt contacting surface of the drive pulley. However, such a pulley is quickly worn out. Further, as a snap pulley or the like, a metal drum having no lining is often used, but such a metal drum is easily worn out and is also swollen when the conveyed material becomes adhered to its outer periphery. As a result, the belt is disturbed from its normal driving and meanders like a snake and has to be stopped occasionally. Some snap pulleys are lined with rubber plates, but such pulleys are severely worn out and have to be exchanged every 2-3 months.
It has been known to secure ceramic lagging elements on the outer surface of metallic pulley for a belt conveyor in order to increase the friction coefficient. However, the pulley having ceramic lagging elements adhered on the surface is generally completed as a final product in a factory and transported to the place where the pulley is required. Therefore, if an old type pulley only lined with rubber plate has to be exchanged for a new type pulley which has ceramic lagging elements on the surface thereof, it takes a long time to wait for the arrival of a new type pulley and it requires a lot of expenses.
The present invention will be explained in more detail referring to the accompanying drawings, in which:
FIGS. 1(A) and (B) are perspective views showing a part of a lagging body with and without spacing groove between adjacent lagging elements according to the present invention;
FIGS. 2(A), (B), (C) and (D) are perspective views of a small plate-like lagging elements, respectively, in which FIG. 2(A) shows a flat and coarse upper surface provided with small projections. FIG. 2(B) shows a slightly arcuate upper surface thereof, FIG. 2(C) shows a coarse surface without small projections and FIG. 2(D) shows a slightly arcuate surface thereof;
In FIGS. 1-3, 1, 1' are lagging elements, 2 small projections, 3 a rubber substrate, 4 grooves, 4' fine boundary lines between adjacent lagging elements aligned in lateral and longitudinal directions, 5 an adhesive layer, and 6 a pulley.
In FIGS. 4-7, 11, 11' are lagging elements, 12 fine boundary lines, 13 a rubber substrate, 14 an adhesive layer, 15 a conveyor belt, 16 a drive pulley, 17 a following pulley, 18 a snap pulley, 19 a hopper, 20 an article to be conveyed, 21 a bent pulley, 22 a tension pulley, 23 a remained article on the conveyor and 24 a chute.
In FIGS. 8-12, 11 is a lagging element, 12 fine boundary lines between adjacent lagging elements aligned in the lateral and longitudinal directions, 13 a rubber substrate, 25 metal pulley drum, 26 a metal substrate having a trough-like cross section, 27 a bolt hole, 28 a bolt with a hexagonal hole, 29 a bolt hole, 30 a screw hole, and 31 a filler.