Abstract: The invention provides a subsea torque tool (10) for a subsea vehicle system (such as an ROV), a drive head selection mechanism (30), and a method of use. The tool comprises a tool housing and a plurality of torque drive heads (22, 24, 26). The drive mechanism (17, 18, 20, 28) is operable to rotate the plurality of torque drive heads, and the drive head selection mechanism is used to select a drive head to impart a torque to a subsea device. The drive head selection mechanism comprises a rotary actuator (14, 32), and rotation of the rotary actuator effects axial movement of at least one of the plurality of drive heads between an operative position and an inoperative position. In another aspect, the drive head selection mechanism comprises an actuator operable from the exterior of the torque tool. In a preferred embodiment, the drive heads are sockets (22, 24, 26), and the selection mechanism comprises a rotary actuator and a cam mechanism.

Abstract: The invention provides a subsea torque tool (10) for a subsea vehicle system (such as an ROV), a drive head selection mechanism (30), and a method of use. The tool comprises a tool housing and a plurality of torque drive heads (22, 24, 26). The drive mechanism (17, 18, 20, 28) is operable to rotate the plurality of torque drive heads, and the drive head selection mechanism is used to select a drive head to impart a torque to a subsea device. The drive head selection mechanism comprises a rotary actuator (14, 32), and rotation of the rotary actuator effects axial movement of at least one of the plurality of drive heads between an operative position and an inoperative position. In another aspect, the drive head selection mechanism comprises an actuator operable from the exterior of the torque tool. In a preferred embodiment, the drive heads are sockets (22, 24, 26), and the selection mechanism comprises a rotary actuator and a cam mechanism.

Abstract: A torque tool (10) for a subsea vehicle (such as a Remotely Operated Vehicle), a motor assembly (16), and a method of use are described. The torque tool comprises a tool housing, at least one torque drive head, and a drive mechanism operable to rotate the at least one torque drive head. The drive mechanism comprises a first hydraulic motor (17) having a first torque output and a second hydraulic motor (18) having a second torque output. The first and second hydraulic motors are operable to drive a common drive shaft (15). A preferred embodiment comprises a hydraulic motor interface device comprising a first interface surface on one side of the device configured to couple a hydraulic fluid supply to the first motor, and a second interface surface on an opposing side of the device configured to couple a hydraulic fluid supply to the second motor.