Crusher
First Claim
1. A gyratory crusher comprisinga body, an annular outer shell fixedly connected to the body about an essentially vertical center axis, a shaft member supported within the outer shell to perform, during crushing, a swinging movement about the center axis, a crushing chamber defined between the outer shell and an annular inner shell arranged on the shaft member, a piston member displaceable generally along the center axis and arranged in a cylinder member associated with the body, the piston member having an upper end for supporting, via an intermediate thrust bearing, a lower end of the shaft member, and a transport duct extending through the piston member and adapted to supply to the thrust bearing a medium promoting the bearing function, wherein the transport duct is defined upstream of the piston member by a transfer means at least a part of which is displaceable relative to the piston member and at least a part of which is displaceable relative to the cylinder member.
6 Assignments
0 Petitions
Accused Products
Abstract
A gyratory crusher comprises a body and an annular outer shell, which is fixedly connected to the body about an essentially vertical center axis. A shaft member is arranged radially inside the outer shell to perform, during crushing, a swinging movement about the center axis. A crushing chamber forms between the outer shell and an annual inner shell arranged on the shaft member. A piston member is displaceable along the center axis and is arranged in a cylinder member belonging to the body. The upper end of the piston member supports, via an intermediate thrust bearing, a lower end of the shaft member. A transport duct for supplying to the thrust bearing a medium promoting the bearing function extends through the piston member and is defined upstream of the piston member by a transfer means. At least a part of the transfer means is displaceable relative to the piston member and at least a part is displaceable relative to the cylinder member.
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Citations
9 Claims
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1. A gyratory crusher comprising
a body, an annular outer shell fixedly connected to the body about an essentially vertical center axis, a shaft member supported within the outer shell to perform, during crushing, a swinging movement about the center axis, a crushing chamber defined between the outer shell and an annular inner shell arranged on the shaft member, a piston member displaceable generally along the center axis and arranged in a cylinder member associated with the body, the piston member having an upper end for supporting, via an intermediate thrust bearing, a lower end of the shaft member, and a transport duct extending through the piston member and adapted to supply to the thrust bearing a medium promoting the bearing function, wherein the transport duct is defined upstream of the piston member by a transfer means at least a part of which is displaceable relative to the piston member and at least a part of which is displaceable relative to the cylinder member.
Specification