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 present invention relates generally to rope drives working with high-strength fiber ropes such as crane hoists, boom adjustment gear, trolley traveling gear, etc. The invention in this respect in particular applies to hoist drums for the rope hoist winch of such a fiber rope drive having a drum jacket body which is provided with grooving at the peripheral side and having two guard plates adjacent to the drum jacket body at the end sides. The invention further relates to a rope pulley for such a fiber rope drive having a rotatably supported pulley body whose jacket surface has at least one rope groove. In accordance with the invention, the rope grooves have a flat-pressed, round groove contour which differs from the circular and which has a larger radius of curvature in the region of the groove base than in the region of the groove flanks adjacent thereto.

The present invention relates generally to rope drives working with high-strength fiber ropes such as crane hoists, boom adjustment gear, trolley traveling gear, etc. The invention in this respect in particular applies to hoist drums for the rope hoist winch of such a fiber rope drive having a drum jacket body which is provided with grooving at the peripheral side and having two guard plates adjacent to the drum jacket body at the end sides. The invention further relates to a rope pulley for such a fiber rope drive having a rotatably supported pulley body whose jacket surface has at least one rope groove. In accordance with the invention, the rope grooves have a flat-pressed, round groove contour which differs from the circular and which has a larger radius of curvature in the region of the groove base than in the region of the groove flanks adjacent thereto.

The invention provides a belt axle connecting piece of a winch and a manufacturing method in the field of mechanical technologies. The winch comprises a bracket and a belt axle axially arranged on the winch, wherein the belt axle includes three rods arranged along the axial direction. Bundling belts or ropes can be placed within the clearance between any two adjacent rods. The belt axle connecting piece comprises a cylindrical body, with three bent positioning petals arranged at one end of the body. Every two adjacent positioning petals form positioning holes for securing the rods to the bracket. The connecting piece is simple in structure, sturdy, and easy to manufacture.

The invention provides a belt axle connecting piece of a winch and a manufacturing method in the field of mechanical technologies. The winch comprises a bracket and a belt axle axially arranged on the winch, wherein the belt axle includes three rods arranged along the axial direction. Bundling belts or ropes can be placed within the clearance between any two adjacent rods. The belt axle connecting piece comprises a cylindrical body, with three bent positioning petals arranged at one end of the body. Every two adjacent positioning petals form positioning holes for securing the rods to the bracket. The connecting piece is simple in structure, sturdy, and easy to manufacture.

A hoist includes a cable configured to lower and to raise a load, and a drum arranged to be rotatably seated about an axis of rotation and configured to wind up and to unwind the cable. The drum comprises a flanged wheel which comprises a securing device configured to secure the cable. The securing device comprises a cable-accommodating block comprising an abutment surface, and a cable clamp. The cable-accommodating block is affixed to the flanged wheel in a direction of tension of the cable and is configured to have the cable be passed there-through. The cable clamp comprises a counterpart abutment surface. The cable clamp is configured to be affixed to the cable. The abutment surface of the cable-accommodating block is configured to be contacted with the counterpart abutment surface of the cable clamp under an effect of a tensile force.

A hoist includes a cable configured to lower and to raise a load, and a drum arranged to be rotatably seated about an axis of rotation and configured to wind up and to unwind the cable. The drum comprises a flanged wheel which comprises a securing device configured to secure the cable. The securing device comprises a cable-accommodating block comprising an abutment surface, and a cable clamp. The cable-accommodating block is affixed to the flanged wheel in a direction of tension of the cable and is configured to have the cable be passed there-through. The cable clamp comprises a counterpart abutment surface. The cable clamp is configured to be affixed to the cable. The abutment surface of the cable-accommodating block is configured to be contacted with the counterpart abutment surface of the cable clamp under an effect of a tensile force.

A rescue hoist including a cable drum assembly generally including a cable drum having a cable groove and a recess positioned at one end of the cable groove, a shear pin extending transverse across the recess, and a cable assembly including a cable routed along the cable groove and a cable hook mounted to one end of the cable. In use, to secure the cable assembly to the cable drum, the cable hook is received in the recess and hooked around the shear pin according to a predefined installation sequence. In use, to provide a cable release provision, the shear pin includes spaced reduced diameter sections positioned on opposing lateral sides of the cable hook configured to shear in response to a load on the cable exceeding a predefined threshold load value.

A rescue hoist including a cable drum assembly generally including a cable drum having a cable groove and a recess positioned at one end of the cable groove, a shear pin extending transverse across the recess, and a cable assembly including a cable routed along the cable groove and a cable hook mounted to one end of the cable. In use, to secure the cable assembly to the cable drum, the cable hook is received in the recess and hooked around the shear pin according to a predefined installation sequence. In use, to provide a cable release provision, the shear pin includes spaced reduced diameter sections positioned on opposing lateral sides of the cable hook configured to shear in response to a load on the cable exceeding a predefined threshold load value.

A rescue hoist including a cable drum assembly generally including a cable drum having a cable groove and a recess positioned at one end of the cable groove, a shear pin extending transverse across the recess, and a cable assembly including a cable routed along the cable groove and a cable hook mounted to one end of the cable. In use, to secure the cable assembly to the cable drum, the cable hook is received in the recess and hooked around the shear pin according to a predefined installation sequence. In use, to provide a cable release provision, the shear pin includes spaced reduced diameter sections positioned on opposing lateral sides of the cable hook configured to shear in response to a load on the cable exceeding a predefined threshold load value.