A hoist system that includes a hook; a cable connected to the hook; a motor configured to move the hook and the cable; and an overload protection device (OLPD) configured to limit loads imparted on one or more of the hook, the cable, and the motor. The hoist system further includes an overload protection device (OLPD) slip detection system configured to detect activation of the overload protection device (OLPD).

The invention relates to a rope drum of a rope hoist, the rope drum having a drum cover for winding a hoisting rope around it, a power transmission member at an end of the drum cover for driving the rope drum, and a fastening device for fastening an end of the hoisting rope to the rope drum. The fastening device is fastenable on an area between the end surfaces of the rope drum, close to an end of the rope drum and protruding from its surface, and mainly comprises a cylindrical gripping part for installing a spliced rope loop of the hoisting rope around it, and a fastening protrusion arranged to extend from the cylindrical gripping part over the end of the rope loop and simultaneously forming a space partly enclosing the end of the rope loop.

The invention relates to a rope drum of a rope hoist, the rope drum having a drum cover for winding a hoisting rope around it, a power transmission member at an end of the drum cover for driving the rope drum, and a fastening device for fastening an end of the hoisting rope to the rope drum. The fastening device is fastenable on an area between the end surfaces of the rope drum, close to an end of the rope drum and protruding from its surface, and mainly comprises a cylindrical gripping part for installing a spliced rope loop of the hoisting rope around it, and a fastening protrusion arranged to extend from the cylindrical gripping part over the end of the rope loop and simultaneously forming a space partly enclosing the end of the rope loop.

A system for hoisting a load on a drilling rig includes: a hoisting means having an elongated hoisting member and an elongated hoisting member drive means; a drill string rotation means suspended from an end of the elongated hoisting member; a support structure having a first side and a second side and being adapted to support at least a portion of the weight the drill string rotation means; a first elongated hoisting member guiding means connected to the support structure; and a counterweight connected to the elongated hoisting member at the second side of the support structure. The elongated hoisting member is reeved over the first elongated hoisting member guiding means from the first to the second side of the support structure. The drill string rotation means is suspended from the elongated hoisting member at the first side of the support structure

A system for hoisting a load on a drilling rig includes: a hoisting means having an elongated hoisting member and an elongated hoisting member drive means; a drill string rotation means suspended from an end of the elongated hoisting member; a support structure having a first side and a second side and being adapted to support at least a portion of the weight the drill string rotation means; a first elongated hoisting member guiding means connected to the support structure; and a counterweight connected to the elongated hoisting member at the second side of the support structure. The elongated hoisting member is reeved over the first elongated hoisting member guiding means from the first to the second side of the support structure. The drill string rotation means is suspended from the elongated hoisting member at the first side of the support structure

A braking system for a motor housing is provided. In one example, braking system comprises a double disk brake configuration arranged in a motor housing. A working position of the double disk brake is configured to automatically adjust based on a condition of a friction pad of a friction disk.

This invention relates to a winch and to a method of using the winch. The winch is ideally adapted for mounting to the boom of a vehicle such as a mini-excavator, and is likely to find its greatest utility in relation to the removal of underground pipes, electricity conduits, fibre optic cables and the like, as well as in the bursting of pipes. The invention provides a winch comprising a support column, a base, a magazine, a drive mechanism and a mounting structure. The drive mechanism is connected to the magazine and is adapted to rotate the magazine in use. The support column connects the magazine to the base. The mounting structure is adapted for mounting to the boom of a vehicle. The winch has a rotatable connection between the base and the mounting structure which is securable in a chosen rotational position, so that the base of the winch can be correctly aligned regardless of the orientation of the vehicle.

This invention relates to a winch and to a method of using the winch. The winch is ideally adapted for mounting to the boom of a vehicle such as a mini-excavator, and is likely to find its greatest utility in relation to the removal of underground pipes, electricity conduits, fibre optic cables and the like, as well as in the bursting of pipes. The invention provides a winch comprising a support column, a base, a magazine, a drive mechanism and a mounting structure. The drive mechanism is connected to the magazine and is adapted to rotate the magazine in use. The support column connects the magazine to the base. The mounting structure is adapted for mounting to the boom of a vehicle. The winch has a rotatable connection between the base and the mounting structure which is securable in a chosen rotational position, so that the base of the winch can be correctly aligned regardless of the orientation of the vehicle.

Monitoring the temperature of the brush of the motor on an electric winch during operation and restricting the operation of the motor within a cooling range in order to minimize downtime and maximize runtime.

Monitoring the temperature of the brush of the motor on an electric winch during operation and restricting the operation of the motor within a cooling range in order to minimize downtime and maximize runtime.