A rope pulling apparatus including a drum for having rope wound therearound and a drive apparatus for providing power to the rope pulling apparatus and driving the drum’s rotations. The rope pulling apparatus also includes a speed control apparatus monitoring the rope being pulled and wound on the drum and a controller for determining the speed of the rope and adjusting the drive apparatus to speed up or slow down the rotation of the drum responsive to the speed of the rope. A method of winding rope on a drum at a constant rope speed. The method includes winding a rope at a desired constant rope speed onto a drum with a rope pulling apparatus and determining a speed of the rope. The method also includes adjusting power of the rope pulling apparatus to achieve the desired constant speed.

A rope pulling apparatus including a drum for having rope wound therearound and a drive apparatus for providing power to the rope pulling apparatus and driving the drum’s rotations. The rope pulling apparatus also includes a speed control apparatus monitoring the rope being pulled and wound on the drum and a controller for determining the speed of the rope and adjusting the drive apparatus to speed up or slow down the rotation of the drum responsive to the speed of the rope. A method of winding rope on a drum at a constant rope speed. The method includes winding a rope at a desired constant rope speed onto a drum with a rope pulling apparatus and determining a speed of the rope. The method also includes adjusting power of the rope pulling apparatus to achieve the desired constant speed.

A pendant assembly for a rescue hoist may comprise a pendant, an interface box discrete from the pendant, and a display screen discrete from the pendant. The pendant may include a hoist input. The interface box may be configured to receive a control input from the pendant. The display screen may be configured to receive a display command from the interface box.

A pendant assembly for a rescue hoist may comprise a pendant, an interface box discrete from the pendant, and a display screen discrete from the pendant. The pendant may include a hoist input. The interface box may be configured to receive a control input from the pendant. The display screen may be configured to receive a display command from the interface box.

The present disclosure relates to a hydraulic system including a variable displacement hydraulic motor for lifting and lowering a load. The hydraulic motor has a high operating speed and a low operating speed. The system also includes an actuator for controlling whether the hydraulic motor is operating at the high or low speed, and a pressure sensor for sensing when a system pressure corresponding to the hydraulic motor exceeds a threshold pressure value. The system further includes a speed control system that controls the actuator such that the hydraulic motor is prevented from operating at the first operating speed when the system pressure exceeds the threshold pressure value.

The present disclosure relates to a hydraulic system including a variable displacement hydraulic motor for lifting and lowering a load. The hydraulic motor has a high operating speed and a low operating speed. The system also includes an actuator for controlling whether the hydraulic motor is operating at the high or low speed, and a pressure sensor for sensing when a system pressure corresponding to the hydraulic motor exceeds a threshold pressure value. The system further includes a speed control system that controls the actuator such that the hydraulic motor is prevented from operating at the first operating speed when the system pressure exceeds the threshold pressure value.

A hoisting mechanism of a crane comprising at least one rope drum for a hoist rope, at least one hoist motor for driving the rope drum, a gearing coupled between the rope drum and the hoist motor, and having an input gear on the hoist motor side and an output gear on the rope drum side, and a brake for braking the input gear. The gearing has a differential to which a first input gear and a second input gear are arranged, wherein the first input gear and the second input gear are coupled to each other and further coupled to the output gear, wherein a first hoist motor connected to the first input gear, and a second hoist motor connected to the second input gear are arranged, and wherein the first input gear and the second input gear have unequal total gear ratios relative to an output shaft. The invention also relates to a method for operating this hoisting mechanism.

A system has a hoist system to lift a payload to a position adjacent to a ceiling of a room Image sensor systems collect visual data and payload depth data within the payload and ambient depth data within the room. A controller is connected to the hoist system and the image sensor systems. The controller is configured to control the motion of the hoist system. The motion of the hoist system is controlled in part by the ambient depth data from the room.

Embodiments of the present disclosure describe methods and apparatuses for a load lifting system.

A vehicle includes an auxiliary battery configured to power an electrical accessory, a traction battery configured to provide power to propel the vehicle, a winch including a motor and cable, and a controller configured to, responsive to a requested torque of the motor being less than a threshold, initiate transfer of power to the motor from the auxiliary battery, and initiate transfer of power to the motor from the traction battery otherwise.