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 wireless hoist system including a first hoist device having a first motor and a first wireless transceiver and a second hoist device having a second motor and a second wireless transceiver. The wireless hoist system includes a controller in wireless communication with the first wireless transceiver and the second wireless. The controller is configured to receive a user input and determine a first operation parameter and a second operation parameter based on the user input. The controller is also configured to provide, wirelessly, a first control signal indicative of the first operation parameter to the first hoist device and provide, wirelessly, a second control signal indicative of the second operation parameter to the second hoist device. The first hoist device operates based on the first control signal and the second hoist device operates based on the second control signal.

A method for controlling lifting of a hanging load using a lifting winch integrating a drum on which a lifting rope is wound coupled to the load, includes measuring a mass parameter and a lifting speed representative of a mass and of a displacement speed of the load and supervising an emergency stop which, once activated, shuts off the lifting winch. The method also includes, during an ascending of the load, comparing the lifting speed with a low threshold and a high threshold which vary according to the mass parameter, and monitoring lifting in an optimized mode in which the lifting speed when ascending is authorized below the high threshold and forbidden above the high threshold, and if the emergency stop is activated during an ascending and while the lifting speed is higher than the low threshold then an alarm is activated.

A plurality of sensors measure rope depth at a plurality of locations along an axis of a winch drum for use by a control unit in determining rope defects.

A plurality of sensors measure rope depth at a plurality of locations along an axis of a winch drum for use by a control unit in determining rope defects.

A system for controlling a winch assembly includes a rotatable winch drum with an attached cable. A winch motor is configured to rotate the winch drum. A sensor is configured to generate signals indicative of the number of layers of the winch cable on the winch drum. A winch controller is configured to receive a control input requesting a selected rotation of the winch drum, receive the signals from the sensor, determine a number of layers of the winch cable disposed on the winch drum, and generate control commands to control the winch motor to rotate the winch drum based on the control input and the number of layers of the winch cable. The control command rotates the winch drum to produce a substantially constant line speed based on the selected control input independent of the number of layers determined to be disposed on the winch drum.

A winch includes a motor, a gear reduction unit, a tie structure, an external power cable, and a rotatable drum. The motor includes a motor housing with a motor case and a first drum support attached to the motor case. The gear reduction unit is drivingly attached to the motor and has a gear housing including a gear case and a second drum support. The tie structure connects said first and second drum supports. The external power cable having a first end and a second end. The first end of the external power cable is configured to be coupled to an external power source. The second end of the external power cable is coupled to a bus bar. The rotatable drum is drivingly connected to the motor and supported by the first and second drum supports.

A winch includes a motor, a gear reduction unit, a tie structure, an external power cable, and a rotatable drum. The motor includes a motor housing with a motor case and a first drum support attached to the motor case. The gear reduction unit is drivingly attached to the motor and has a gear housing including a gear case and a second drum support. The tie structure connects said first and second drum supports. The external power cable having a first end and a second end. The first end of the external power cable is configured to be coupled to an external power source. The second end of the external power cable is coupled to a bus bar. The rotatable drum is drivingly connected to the motor and supported by the first and second drum supports.

A winch includes a motor, a gear reduction unit, a tie structure, an external power cable, and a rotatable drum. The motor includes a motor housing with a motor case and a first drum support attached to the motor case. The gear reduction unit is drivingly attached to the motor and has a gear housing including a gear case and a second drum support. The tie structure connects said first and second drum supports. The external power cable having a first end and a second end. The first end of the external power cable is configured to be coupled to an external power source. The second end of the external power cable is coupled to a bus bar. The rotatable drum is drivingly connected to the motor and supported by the first and second drum supports.