An electric stair lift system for transporting people and/or cargo up and down a flight of stairs includes a pair of parallel rails, a platform that is slidably engaged with the rails, an electric winch with a take-up spool, and pair of straps attached between the slidable platform and the take-up spool of the winch. In a preferred embodiment, the electric stair lift system is portable, so that it may be installed in such a way that it may be easily removed, stored and transported, as desired.

An electric stair lift system for transporting people and/or cargo up and down a flight of stairs includes a pair of parallel rails, a platform that is slidably engaged with the rails, an electric winch with a take-up spool, and pair of straps attached between the slidable platform and the take-up spool of the winch. In a preferred embodiment, the electric stair lift system is portable, so that it may be installed in such a way that it may be easily removed, stored and transported, as desired.

A drilling machine having: a string of telescopic rods provided with an excavation tool; a winch having a drum associated with a motor; a flexible pulling element connected on the one hand to the drum and on the other hand to the string of telescopic rods; a manual control element of the winch that can assume a first position, a second position and a third position; a control system configured for controlling the motor, in a first operating mode, so as to unwind the flexible pulling element from the drum when the manual control element is in the first position, wind the flexible pulling element on the drum in order to raise the string of telescopic rods when the manual control element is in the second position, stop the drum when the manual control element is in the third position; wherein it comprises a first manual selector adapted to select a second operating mode, and in that the control system is configured for controlling the motor, in the second operating mode, so as to wind the flexible pulling element on the drum in order to tension the flexible pulling element without raising the string of telescopic rods when the manual control element assumes the third position.

A drilling machine having: a string of telescopic rods provided with an excavation tool; a winch having a drum associated with a motor; a flexible pulling element connected on the one hand to the drum and on the other hand to the string of telescopic rods; a manual control element of the winch that can assume a first position, a second position and a third position; a control system configured for controlling the motor, in a first operating mode, so as to unwind the flexible pulling element from the drum when the manual control element is in the first position, wind the flexible pulling element on the drum in order to raise the string of telescopic rods when the manual control element is in the second position, stop the drum when the manual control element is in the third position; wherein it comprises a first manual selector adapted to select a second operating mode, and in that the control system is configured for controlling the motor, in the second operating mode, so as to wind the flexible pulling element on the drum in order to tension the flexible pulling element without raising the string of telescopic rods when the manual control element assumes the third position.

The invention provides a safety device for a winch, which would not startle or otherwise easily impact the psychology of a user, so that the user can use the winch more safely. The safety device of a winch includes a power module, a detection module and a control module, and further includes a display driving module and a display module. The display driving module is electrically connected to the display module. The display driving module and the detection module are electrically connected to the power module. The power module, the detection module and the display driving module are electrically connected to the control module. The invention further provides a winch, further including a detection device and an expression device. The detection device is used for detecting the working load of a motor. The expression device is used for expressing the load according to the detection signal of the detection device.

The invention provides a safety device for a winch, which would not startle or otherwise easily impact the psychology of a user, so that the user can use the winch more safely. The safety device of a winch includes a power module, a detection module and a control module, and further includes a display driving module and a display module. The display driving module is electrically connected to the display module. The display driving module and the detection module are electrically connected to the power module. The power module, the detection module and the display driving module are electrically connected to the control module. The invention further provides a winch, further including a detection device and an expression device. The detection device is used for detecting the working load of a motor. The expression device is used for expressing the load according to the detection signal of the detection device.

A winch control system having a solid state winch contactor and a boost power supply for a vehicle equipped with an electric winch and especially for off-road vehicles, is disclosed. This invention automatically provides three winch speeds: a slow start (creep) speed for parking the hook and for sneaking up on a load, a normal speed for normal winch operation and a fast speed for taking less time to unwind and rewind the winch rope when there is no load on the winch. Protection features for the winch contactor and/or the winch include, but are not limited to, electronic winch motor braking, current limiting, over temperature, undervoltage and reverse battery. Winch current limiting is adjustable from 100 amps to 300 amps, chosen for the purpose of accommodating various winch sizes.

A method for controlling operation of a winch, which has a capstan drive unit for hauling a cable into the winch and for paying the cable out of the winch, a main drive for driving the capstan drive unit, a cable drum for receiving the cable by winding up and unwinding the cable, a drum drive for driving the cable drum, wherein the drum drive and the main drive are operable independently of one another, and a rotational speed measuring device which is arranged in a cable inlet portion of the winch. The method has a step of reading a first rotational speed from the main drive and a second rotational speed from the rotational speed measuring device. In addition, the method has a step of determining a torque value for setting a torque of the drum drive depending on the first rotational speed and the second rotational speed.

A method for controlling operation of a winch, which has a capstan drive unit for hauling a cable into the winch and for paying the cable out of the winch, a main drive for driving the capstan drive unit, a cable drum for receiving the cable by winding up and unwinding the cable, a drum drive for driving the cable drum, wherein the drum drive and the main drive are operable independently of one another, and a rotational speed measuring device which is arranged in a cable inlet portion of the winch. The method has a step of reading a first rotational speed from the main drive and a second rotational speed from the rotational speed measuring device. In addition, the method has a step of determining a torque value for setting a torque of the drum drive depending on the first rotational speed and the second rotational speed.

A winch is disclosed for a pick-up bed having a floor, and a front wall. The winch includes a winch motor and spool assembled to the truck body below the floor. An upper pulley is assembled to the front wall with a cable wound around the spool that is extendable and retractable from the spool. The cable is routed over the upper pulley through an opening defined by the front wall. The opening is spaced from the floor to facilitate loading articles into and unloading articles from the truck bed.