Piston rod assembly
AssigneeSpicket Valves and Pumps Limited
InventorsGeorge Coulter Kennedy, Arnaud Fusilier
Life of this patent
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Abstract
A piston rod assembly for coupling between a power end and a fluid end of a high pressure reciprocating pump. Part cylindrical members are clamped together via pistons arranged orthogonally to the rod axis. The members grip the power and fluid end components in a knuckle joint or ball and socket. By providing orthogonal loading, a large contact area is obtained between the members and the components, which gives a mechanical advantage in keeping the parts together even when a maximum reciprocating force is applied by the pump.
Claims5
A piston rod assembly for coupling between a power end component and a fluid end component of a high pressure reciprocating pump, the assembly comprising, an upper clamping member and a lower clamping member each having a fluid end recess and a power end recess on an inner surface of each clamping member arranged along an axis of the components, wherein a portion of each component is gripped and held within each of the respective recesses wherein the clamping members are brought together by a tensioning device located orthogonal to the axis of the components, wherein the tensioning device comprises a stem adapted to receive a nut or a lock, wherein the tensioning device is engaged in a non-rotational arrangement within the lower clamping member and the stem extends through an aperture in the upper clamping member, wherein a nut engages the stem and the upper clamping member to provide tension in said tensioning device such that the clamping members are brought together by the tensioning device.
Dependencies are inferred from the claim text.