Konecranes Global Corporation

Henri Kokko

Teppo Lindberg

Niko Laukkanen

Atte Lähteenmäki

Henri Helkiö

Mikko Jutila

Mats Åkesson

Mikko Ritala

Adeyinka Abass

Mikko Mykrä

Jenni Tähtinen

Henri Helkio

Atte Lahteenmaki

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.

Rope drum of rope hoist and fastening device of hoisting rope

A frame structure of a hoist, the frame structure including a support frame structure, a bearing wheel arrangement fastened to the support frame structure by suspenders to support the hoist on a main support structure and to move the hoist on the main support structure, whereby the bearing wheel arrangement includes, in the movement direction of the hoist, bearing wheels arranged on opposite sides thereof, and upper sheave arrangements secured to the support frame structure, wherein the support frame structure includes two plates arranged opposite and at a distance from each other, the upper parts of the plates bent towards each other, and in the support frame structure there is arranged an axle passing through both plates, on which axle a sheave is arranged between the plates, and the bent upper parts of the plates are detachably fastenable by a wedge locking to the suspender in order to adjust the mutual distance between the bearing wheels arranged on opposite sides of the support frame structure by means of the suspenders.

Frame structure of hoist

The hoisting arrangement of a hoist of a of a crane, includes a trolley arranged to move along a main support structure of the crane, whereby the trolley includes a support frame structure; bearing wheels which are fastened to the support frame structure and by means of which the trolley is arranged to move along said main support structure; a hoisting mechanism that has a rope drum for a hoisting rope, a rope pulley arrangement which has upper sheave arrangements and lower rope pulley arrangements and through which the hoisting rope may be guided from the rope drum to an attachment point, and a hoisting member in cooperation with the hoisting rope for hoisting a load; whereby the rope drum is supported to the support frame structure of the trolley so that the axle of the rope drum is parallel to the main support structure. In the hoisting arrangement, the disengagement point of the hoisting rope from the rope drum, the attachment point of the sheave, and the attachment point of the first end of hoisting rope are arranged on the same vertical plane of the hoisting arrangement. The rope drum has a first end towards which the hoisting rope is wound in the hoisting member's upper position, and a second end towards which the hoisting rope is unwound in the hoisting member's lower position. The first rope pulley of the rope pulley arrangement is so placed that the release point of the hoisting rope from the first rope pulley to the first sheave is, in the axle direction of the rope drum, further from the second end than the first end of the rope drum.

Hoisting arrangement of a hoist of a crane

A trolley of a crane is arranged to move along a main support structure of the crane. The trolley includes a support frame structure; bearing wheels which are fastened to the support frame structure and by means of which the trolley is arranged to move along the main support structure; and a hoisting mechanism that has a rope drum for a hoisting rope, a rope pulley arrangement through which the hoisting rope may be guided from the rope drum to a fixed fastening point on the trolley, and a hoisting member in cooperation with the hoisting rope for hoisting a load. The rope drum is supported to the support frame structure of the trolley so that the axle of the rope drum is parallel to the main support structure. The rope pulley arrangement is located, in the axial direction of the rope drum, at least partly outside one rope drum end which is on the side of said fastening point. The support frame structure is divided into two separate frame parts, whereby the first frame part supports the rope pulley arrangement and the rope drum end on the side thereof, and whereby the second frame part supports the opposite end of the rope drum. A pivoted joint is arranged between the first frame part and the second frame part, which allows the first and second frame part to move relative to each other around the vertical and horizontal axis and the longitudinal axis of the first and second frame part.

Trolley of a crane

A hoisting device includes a body, a hoisting rope, a rope drum arranged in connection with the body, on which a first end of the hoisting rope is fastened, and a hoisting part which ascends and descends by means of the hoisting rope. The hoisting device includes a fastening device of a second end of the hoisting rope, which is formed into a loop wherein a spiral groove is substantially surrounding the entire loop and in which the part adjacent to the second end of the hoisting rope is received. The hoisting device further has a fastening arrangement which locks the second end of the hoisting rope to the fastening device, preventing the second end from being pulled out of the fastening device.

Fastening device for hoisting rope of hoisting device

A low-construction trolley for a wire rope hoist is arranged to travel along a lower flange of a horizontal rail, on both longitudinal edges thereof. The trolley includes a trolley frame; bearing wheels that are attached to the trolley frame and arranged to travel on an upper surface of the lower flange of the rail; a hoisting mechanism including a rope drum for a hoisting rope, a hoisting member in cooperation with the hoisting rope for hoisting a load, a hoisting motor for driving the rope drum, and a gear to interconnect the hoisting motor and the rope drum; whereby the rope drum is supported to one side of the trolley frame and the hoisting member is arranged to travel under the rail in a vertical plane (A) passing substantially through the middle of the beam. For balancing the trolley without using a counterweight, the hoisting motor is placed under the rail and at least partly on a different side than the rope drum in relation to a vertical plane (B) passing through contact lines of the bearing wheels that touch the lower flange of the rail on the rope drum side.

Low-construction trolley for wire rope hoist

A low-construction hoist for a wire rope hoist is arranged to move along a lower flange of a horizontal beam or rail. The trolley includes a trolley frame; bearing wheels, which are fixed to the trolley body and arranged to move on the upper surface of the lower flange of the rail, a hoisting mechanism including a rope drum for a hoisting rope, a hoisting member in cooperation with the hoisting rope for hoisting a load, and a hoisting motor for driving the rope drum; whereby the rope drum is supported to a first side of the trolley frame so that the axle of the rope drum is parallel to the rail, and the hoisting member is arranged to move under the rail; whereby the hoisting rope is led from the rope drum to a fixing point in the trolley frame through at least a rope pulley arrangement of the hoisting member, whereby the fixing point of the hoisting rope to the trolley frame is located in the longitudinal direction of the trolley outside the end of the rope drum, or outside the vertical plane which is transverse in relation to the rail or beam and passing through the end of the rope drum.

Growing community of inventors

Hyvinkää, Finland

Henri Kokko