Swivel bearing assembly
AssigneeHaviland Holdings Pty Ltd
InventorSean Haviland
Life of this patent
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Abstract
A bearing assembly suitable for a fluid delivery system such as a hydraulic water cannon, including for a first pipe that is moveable relative to a second pipe, the assembly comprising a main body adapted to be connected to an end of the first pipe, an annular centre swivel adapted to be connected to an end of the second pipe, the centre swivel including an annular, axially extending boss extending away from the main body, with the opposed radially extending face extending radially outwardly from said boss, and a bearing end cap adapted to engage around the second pipe and be fastened to the main body securing there between said centre swivel. The bearing assembly is adapted to operate at water pressures greater than 10 bar.
Claims22
A bearing assembly for a first pipe that is moveable relative to a second pipe in a fluid delivery system, the bearing assembly comprising:
- a unitary main body adapted to be connected to an end of the first pipe, the main body having a central opening for flow of fluid there-through in the fluid delivery system, a central recess formed having a shoulder or flange surrounding the central opening, and a radially extending annular face formed around the central recess having a coaxial seat on the annular face that receives a first thrust ring;
- an annular centre swivel adapted to be connected to an end of the second pipe and having a first radially extending face with a coaxial seat to engage the first thrust ring and an opposite radially extending face with a second coaxial seat that receives a second thrust ring, wherein the centre swivel includes:
- a part that extends axially towards the main body and is received within the central recess of the main body in axial alignment with the central opening for flow of fluid there-through, wherein an end of said part of the centre swivel received within the central recess is located opposite the shoulder or flange surrounding the central opening, and an annular, axially extending boss that extends away from the main body for connection to the end of the second pipe, with said opposite radially extending face extending radially outwardly from the boss;
- and
- a bearing end cap adapted to engage around the second pipe and adapted to be bolted to the main body securing there-between the centre swivel and the first and second thrust rings, the end cap having a seat for the second annular bearing;
- wherein the main body has an annular slot forming a first coaxial transverse recess to receive an annular first seal member arranged to seal against a cylindrical outer surface of said part of the centre swivel that extends axially towards the main body and is received within the central recess, and wherein the annular first seal member comprises:
- a glide seal which abuts the cylindrical outer surface of said part of the centre swivel that extends axially towards the main body, and an O-ring energiser that sits in the annular slot covered by the glide seal.
A bearing assembly for mounting a first pipe that is moveable relative to a second pipe in a fluid delivery system, the bearing assembly comprising:
- a unitary main body adapted to be securely connected to an end of the first pipe and having a central opening for flow of fluid there-through in the fluid delivery system, the main body having a central recess around the central opening and a radially extending annular face surrounding the central recess with a coaxial seat on the annular face that receives a first thrust ring;
- an annular centre swivel adapted to be securely connected to an end of the second pipe and having a generally cylindrical part to be received within the central recess of the main body for flow of fluid there-through in the fluid delivery system and a circumferential flange that presents a first radially extending face having a coaxial seat to engage the first thrust ring and a second, opposite radially extending face having a second coaxial seat that receives a second thrust ring, the centre swivel further including an annular, axially extending boss that extends away from the main body for secure connection to the end of the second pipe, wherein the second radially extending face extending radially outwardly from the boss;
- and
- a bearing end cap adapted to engage around the second pipe and adapted to be bolted to the main body securing there-between the centre swivel and the thrust rings, the end cap having a seat for the second thrust ring;
- wherein an internal diameter of the generally cylindrical part of the annular centre swivel received within the central recess of the main body axially aligns with and essentially matches a diameter of the central opening in the main body, and wherein the main body has a coaxial transverse recess formed as an annular slot around the central recess to receive an annular first seal member arranged to seal against a cylindrical outer surface of the generally cylindrical part of the centre swivel within the central recess,
- wherein the annular first seal member comprises:
- a glide seal which abuts the cylindrical outer surface of the generally cylindrical part of the centre swivel within the central recess, and an O-ring energiser which sits in the coaxial transverse recess covered by the glide seal, wherein the bearing assembly is designed for operation at fluid pressures greater than 10 bar.
Dependencies are inferred from the claim text.