Equalizer Bearing Assembly having Wedged Retainers
AssigneeTRC Services, Inc.
InventorsDarius J. Yakimchuk, Robert G. McDonald
Life of this patent
Estimating the term…
Abstract
An assembly is used to connect an equalizer bar to a walking beam of a reciprocating pump unit. The walking beam has a bearing shaft having cylindrical ends. Brackets attached to the equalizer bar define slots, each having a hooked section and having a base section. The hooked sections are configured to rest against the cylindrical ends of the bearing shaft. The base sections of the slots oppose the hooked sections at a gap from the cylindrical ends of the bearing shaft. Wedges are configured to position in the slots between the bases and the cylindrical ends of the bearing shaft.
Claims22
An assembly to connect arms of a reciprocating pump unit to a walking beam of the reciprocating pump unit, the walking beam having a bearing shaft with cylindrical ends, the assembly comprising:
- an equalizer bar having brackets, each of the brackets defining a slot, the slot having a hooked section and having a base section, the hooked section being configured to rest against a respective one of the cylindrical ends of the bearing shaft, the base section opposing a respective one of the hooked sections at a gap from the cylindrical end of the bearing shaft;
- and
- wedges being configured to position in the slots between the base sections and the cylindrical ends of the bearing shaft, each of the wedges having first and second edges, the first edge being configured to rest against the cylindrical end of the bearing shaft, the second edge opposing the first edge and being configured to rest against the base section of the slot.
An assembly to connect an equalizer bar to a walking beam of a reciprocating pump unit, the walking beam having a bearing shaft with cylindrical ends, the assembly comprising:
- brackets configured to attach to the equalizer bar, each of the brackets defining a slot, the slot having a hooked section and having a base section, the hooked section being configured to rest against a respective one of the cylindrical ends of the bearing shaft, the base section opposing a respective one of the hooked sections at a gap from the cylindrical end of the bearing shaft;
- and
- wedges configured to position in the slots between the bases and the cylindrical ends of the bearing shaft, each of the wedges having first and second edges, the first edge being configured to rest against the cylindrical end of the bearing shaft, the second edge opposing the first edge and being configured to rest against the base section of the slot.
A reciprocating pump unit, comprising:
- arms configured to translate on the reciprocating pump unit;
- an equalizer bar hingedly connected to the arms;
- a walking beam mounted to pivot on the reciprocating pump unit;
- and
- an assembly connecting the equalizer bar to the walking beam, the assembly comprising:
- a shaft having cylindrical ends;
- a bearing disposed on the walking beam and supporting the shaft to rotate;
- brackets disposed on the equalizer bar, each of the brackets defining a slot, the slot having a hooked section and having a base section, the hooked section configured to rest against a respective one of the cylindrical ends of the shaft, the base section opposing a respective one of the hooked sections at a gap from the cylindrical end of the pin;
- and
- wedges disposed in the slots between the cylindrical ends of the shaft and the base sections of the slots, each of the wedges having first and second edges, the first edge resting against the cylindrical end of the shaft, the second edge opposing the first edge and resting against the base section of the slot.
A method to connect an equalizer bar to a walking beam of a reciprocating pump unit, the method comprising:
- attaching a bearing to the walking beam, the bearing having a shaft with cylindrical ends;
- resting hooked sections of slots defined in brackets on the equalizer to rest against the cylindrical ends of the shaft;
- and
- positioning wedges in the slots in a gap between base sections of the slots and the cylindrical ends of the shaft.
Dependencies are inferred from the claim text.