A wire pulling windier apparatus attachable to a tractor, loader or other mobile transport device capable of receiving attachments has a pass through frame attachable to the mobile device, a vertical support member on the frame for supporting a first winch with cable for attaching and pulling a fence wire to be tensioned, a second winch for raising and lowering a slide block assembly through which the first winch cable is guided to allow pulling the first winch cable at different vertical heights, and has winch tension limiting apparatus.

A winch control system is disclosed. The winch control system may be used to control or operate a winch on a vehicle in a selected mode, such as a plow mode. The winch control system may include or receive input from selected sensors relative to the vehicle to assist in control and operation of the winch.

A method can include receiving information associated with a conveyance of equipment in a borehole via a cable. The method may further include determining cable tension values based at least in part on a model and at least a portion of the information and conveying the equipment in the borehole via the cable; acquiring a cable tension value via one or more sensors. The method may further include comparing the acquired cable tension value to at least one of the determined cable tension values and, based at least in part on the comparing, setting a cable tension limit for further conveying of the equipment in the borehole via the cable.

A fairlead for use with a winch is disclosed. The fairlead is made up of a first and second roller, a motor, a sensor, and a controller. The rollers are adapted to aid in spooling or unspooling a line. The motor drives at least the first roller. The sensor determines whether a winch drum is spooling or unspooling a line. The controller is connected to the motor and communicates with the sensor. The sensor determines whether the winch drum is spooling or unspooling the line. The controller is configured to direct the motor so that the rollers assist in unspooling or spooling the line in coordination with the winch drum. In some embodiments, the fairlead is integrated into the winch.

A drum is rotatably mounted on a carriage. A cable is configured to: transport power, connect with a drum connector disposed on the drum, and connect with an unmanned aerial vehicle (UAV) via a UAV connector. A drum actuator is configured to rotate the drum. A UAV feed is configured to align the cable as it exits the device towards the UAV. A tension sensor is configured to measure a tension of the cable. A controller receive as tension measurement from the tension sensor; and controls the drum actuator to maintain a determined tension on the cable while: dispensing the cable; holding the cable steady; or collecting the cable.

A control device that controls an electric hoisting machine includes: a tension sensor that detects tension of a pulling member; a mode input unit that inputs a mode switch signal to switch between a winding mode and an unwinding mode; and a control unit that controls the operation of a electric motor. The control unit, when set in the unwinding mode, controls the electric motor in accordance with a detection signal from the tension sensor to cause the rotating body to be inversely rotated when the tension of the pulling member is not less than a predetermined threshold value, and to prevent the rotating body from being inversely rotated when the tension of the pulling member is lower than the predetermined threshold value.

Provided is a crane and a control method capable of preventing an irregular winding from being caused, without significant deterioration in work efficiency. The crane includes an allowable deceleration rate derivation unit and a winch control unit. The allowable deceleration rate derivation unit derives an allowable deceleration rate representing an allowable value of the deceleration rate of the winding of a suspension rope, from a measured load that is a suspension load measured by a load measurement device. The allowable deceleration rate derivation unit derives the allowable deceleration rate that is decreased with a decrease in the measured load. The winch control unit makes the winding of the suspension rope by a winch device decelerated at a deceleration rate limited within a range equal to or less than the allowable deceleration rate.

The present invention is provided with: a manipulation unit; a winch device that operates with an actuation mode of either a high speed mode or a low speed mode, and winds in or reels out a wire rope; a selection unit for an operator to select either the high speed mode or the low speed mode; a load calculation unit calculating a suspended load; a tension calculation unit calculating the tension of the wire rope; and a control unit controlling the actuation of the winch device. If the mode selected by the selection unit is the high speed mode, the manipulation unit is manipulated from a neutral state to a non-neutral state, and the suspended load is smaller than a load threshold and the tension is smaller than a tension threshold, the control unit controls the winch device so as to operate in the high speed mode.

A method for operating a towing winch and an electric drive for a towing winch, the towing winch including a rotatable winch drum for spooling a spoolable medium, and an electric motor operably coupled to the winch drum to rotate the winch drum, wherein the electric drive is configured to be operably coupled to the electric motor, and configured to control, during a towing of at least one object connected to the spoolable medium, a tension of the spoolable medium between the winch drum and the at least one object to be towed to be equal to or lower than a tension limit value; and monitor, during the towing, a roll angle of the tug, and in response to the monitored roll angle of the tug being outside of a predetermined range, lower the tension limit value providing roll compensation.

The present invention is provided with: a manipulation unit; a winch device that operates with an actuation mode of either a high speed mode or a low speed mode, and winds in or reels out a wire rope; a selection unit for an operator to select either the high speed mode or the low speed mode; a load calculation unit calculating a suspended load; a tension calculation unit calculating the tension of the wire rope; and a control unit controlling the actuation of the winch device. If the mode selected by the selection unit is the high speed mode, the manipulation unit is manipulated from a neutral state to a non-neutral state, and the suspended load is smaller than a load threshold and the tension is smaller than a tension threshold, the control unit controls the winch device so as to operate in the high speed mode.