Load measurement system for hydraulic torque wrench
AssigneeEnerpac Tool Group Corp.
InventorsRobin Shaw, Andrew Dumelow
Life of this patent
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Abstract
A hydraulic torque wrench and a method of determining a load exerted on a workpiece by a hydraulic torque wrench. The wrench may generally include a housing; a drive element for engaging the workpiece; a drive actuator for transmitting a torque to the drive element; and a gauge coupled to at least one of the housing and the drive actuator, the gauge being configured to detect a characteristic indicative of a torque exerted by the drive element to the workpiece. The wrench may include a sensor configured to detect rotation of the drive element.
Claims13
A torque wrench operable to exert a torque on a workpiece, the torque wrench comprising:
- a housing;
- a drive element for engaging the workpiece;
- a drive actuator for transmitting a torque to the drive element, the drive actuator including a lever arm for rotating the drive element;
- and
- a first gauge coupled to the lever arm and a second gauge coupled to the lever arm, the first gauge and the second gauge being configured to detect a bending strain of the lever arm indicative of a torque exerted by the drive element to the workpiece.
A torque wrench operable to exert a torque on a workpiece, the torque wrench comprising:
- a housing;
- a drive element for engaging the workpiece;
- a drive actuator for transmitting a torque to the drive element;
- and
- a first gauge and a second gauge configured to detect a reaction force exerted on a reaction member of the housing indicative of a torque exerted by the drive element to the workpiece.
A torque wrench operable to exert a torque on a workpiece, the torque wrench comprising:
- a housing;
- a drive element for engaging the workpiece, the drive element including a sprocket having sprocket teeth;
- a drive actuator for transmitting a torque to the drive element;
- a rotating member driven to rotate by rotation of the drive element, the rotating member including a gear having gear teeth engaging the sprocket teeth;
- a gauge coupled to at least one of the housing and the drive actuator, the gauge being configured to detect a characteristic indicative of a torque exerted by the drive element to the workpiece;
- and
- a sensor supported by the housing and configured to detect rotation of the drive element, the sensor being configured to detect rotation of the rotating member to thereby detect rotation of the drive element.
Dependencies are inferred from the claim text.