Shaft coupling for device for dispersing gas in or pumping molten metal
First Claim
1. A coupling assembly for coupling a drive shaft and refractory shaft, comprising:
- a drive shaft having an upper end and a lower end and being adapted to be rotated by a motor at said upper end;
a rotatable refractory shaft having an upper end and a lower end, said lower end of said shaft being adapted to be connected to a rotor, locking recesses formed in said upper end of said refractory shaft, said refractory shaft being formed of refractory material; and
a rotatable coupling comprising;
a body having an exterior surface, an upper end and a lower end,a device for affixing said lower end of said drive shaft to said upper end of said body,lever arms fastened to said body,pivots disposed in said body about which said lever arms are pivoted,a recess in said lower end of said body adapted for receiving said upper end of said refractory shaft and openings in said body extending from said exterior surface to said recess,each of said lever arms including a protruding locking member positioned in said opening in said coupling body, each of said locking members being adapted to engage one of said locking recesses of said refractory shaft, anda device that exerts a force against said lever arms forcing said locking members into said locking recesses.
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Abstract
A coupling assembly includes a motor driven drive shaft. A rotatable refractory shaft is adapted to be connected to a rotor. Locking recesses are formed in an upper end of the refractory shaft. A rotatable coupling includes a body and a device for affixing the drive shaft to the body. Lever arms are fastened to the body and can be pivoted. A recess in the body receives the refractory shaft. Openings in the body extend from an exterior surface of the body to the recess. Each of the lever arms includes a protruding locking member positioned in the opening in the body. Each locking member engages a locking recess. A device exerts a force against the lever arms forcing the locking members into the locking recesses.
77 Citations
27 Claims
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1. A coupling assembly for coupling a drive shaft and refractory shaft, comprising:
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a drive shaft having an upper end and a lower end and being adapted to be rotated by a motor at said upper end; a rotatable refractory shaft having an upper end and a lower end, said lower end of said shaft being adapted to be connected to a rotor, locking recesses formed in said upper end of said refractory shaft, said refractory shaft being formed of refractory material; and a rotatable coupling comprising; a body having an exterior surface, an upper end and a lower end, a device for affixing said lower end of said drive shaft to said upper end of said body, lever arms fastened to said body, pivots disposed in said body about which said lever arms are pivoted, a recess in said lower end of said body adapted for receiving said upper end of said refractory shaft and openings in said body extending from said exterior surface to said recess, each of said lever arms including a protruding locking member positioned in said opening in said coupling body, each of said locking members being adapted to engage one of said locking recesses of said refractory shaft, and a device that exerts a force against said lever arms forcing said locking members into said locking recesses. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A coupling assembly for coupling a drive shaft and refractory shaft used to introduce gas into molten metal comprising:
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a drive shaft having an upper end and a lower end and being adapted to be rotated by a motor at said upper end, said drive shaft having a passageway extending therethrough; a rotatable refractory shaft having an upper end and a lower end, said lower end of said refractory shaft being adapted to be connected to a rotor, locking recesses formed in said upper end of said refractory shaft, said refractory shaft being formed of refractory material and having a passageway extending therethrough; and a rotatable coupling comprising; a body having an exterior surface and a central opening aligned with said passageways in said drive shaft and said refractory shaft, a device for affixing said lower end of said drive shaft to said upper end of said body, lever arms fastened to said body, pivots disposed in said body about which said lever arms are pivoted, a recess in said body adapted for receiving said upper end of said refractory shaft and openings in said body extending from said exterior surface to said recess, each of said lever arms including a protruding locking member positioned in said opening in said body, each of said locking members being adapted to engage one of said locking recesses of said refractory shaft, a device that exerts a force against said lever arms forcing said locking members into said locking recesses, and stop members each adapted to limit movement of one of said lever arms into said coupling recess. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
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27. A coupling assembly for coupling a drive shaft and refractory shaft used to introduce gas into molten metal, comprising:
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a drive shaft having an upper end and a lower end and being adapted to be rotated by a motor at said upper end, said drive shaft having a passageway extending therethrough; a rotatable refractory shaft having an upper end and a lower end, said lower end of said shaft being adapted to be connected to a rotor, locking recesses formed in said upper end of said refractory shaft, said refractory shaft being formed of refractory material and having a passageway extending therethrough; and a rotatable coupling comprising; a body having an exterior surface, an upper end and a lower end, means for affixing said lower end of said drive shaft to said upper end of said body, lever arms fastened to said body, pivots disposed in said body about which said lever arms can be pivoted, a recess in said lower end of said body adapted for receiving said upper end of said refractory shaft and openings in said body extending from said exterior surface to said recess, each of said lever arms including a protruding locking member positioned in said opening in said coupling body, each of said locking members being adapted to engage one of said locking recesses of said refractory shaft, and springs disposed at said upper end of said body that bias said locking members of said lever arms into said recess.
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Specification