A bridge crane arrangement includes at least one main girder having a central web and a bottom flange; end girders supporting opposite ends of the main girder; a slide arranged between an end girder and the main girder, the slide allowing the movement of the end girder in relation to the main girder in at least its longitudinal direction and the rotation of the end girder and main girder in relation to each other; and a restrictor to restrict the movements between the end girder and the main girder. On the top surface of the end girder, there is arranged a support platform wider than the bottom flange, the slide includes a slide surface arranged on the top surface of the support platform and/or the bottom surface of the bottom flange, and the restrictor is arranged to the support platform on both sides of the bottom flange.

The invention provides a crane assembly for lifting a load comprising: a pair of guides (2) positioned parallel to one another; a carriage (4,40) associated with each guide (2) and movable along each guide (2); a bridge (1) having an attachment point (8) for attaching the load, the bridge (1) being attached between the carriages (4,40) through connector arms (3), each connector arm (3) being attached through a lower end (31) to the bridge (1) and pivotable (5) at least about an axis perpendicular to the bridge, each connector arm (3) being attached at an upper end (32) to the corresponding carriage (4,40) through a multi-axis joint (33,35); wherein each multiaxis joint (33,35) is connected to the corresponding carriage (4,40) through a low friction thrust bearing (6)configured to rotate with initial movement of the corresponding carriage (4,40).

The invention provides a crane assembly for lifting a load comprising: a pair of guides (2) positioned parallel to one another; a carriage (4,40) associated with each guide (2) and movable along each guide (2); a bridge (1) having an attachment point (8) for attaching the load, the bridge (1) being attached between the carriages (4,40) through connector arms (3), each connector arm (3) being attached through a lower end (31) to the bridge (1) and pivotable (5) at least about an axis perpendicular to the bridge, each connector arm (3) being attached at an upper end (32) to the corresponding carriage (4,40) through a multi-axis joint (33,35); wherein each multiaxis joint (33,35) is connected to the corresponding carriage (4,40) through a low friction thrust bearing (6)configured to rotate with initial movement of the corresponding carriage (4,40).

An arrangement with an end carriage, a plate, and a wheel block which is detachably fastened to the end carriage and comprises a housing and a wheel that is mounted in the housing and projects out of the housing, wherein the plate is located between the end carriage and the wheel block and is fixedly connected to the end carriage and has a base surface directed towards the housing, and wherein the housing has a groove which receives the plate and which has a bottom surface, directed towards the base surface, and side walls delimiting the groove, wherein the wheel block is aligned relative to the end carriage by means of an interlocking connection between the wheel block and the plate.

An arrangement with an end carriage, a plate, and a wheel block which is detachably fastened to the end carriage and comprises a housing and a wheel that is mounted in the housing and projects out of the housing, wherein the plate is located between the end carriage and the wheel block and is fixedly connected to the end carriage and has a base surface directed towards the housing, and wherein the housing has a groove which receives the plate and which has a bottom surface, directed towards the base surface, and side walls delimiting the groove, wherein the wheel block is aligned relative to the end carriage by means of an interlocking connection between the wheel block and the plate.

A self-contained hoist device, rail device and hoist system for hoisting building materials, comprising a housing; and lifting beam extending from the housing; wherein a hoist motor for driving a winch provided with a hoisting wire and a battery pack for powering the hoist motor are arranged inside the housing, and a distal end of the hoisting wire is adapted to be attached to a fixing point above the self-contained hoist device, whereby operation of the hoist motor may cause the housing and lifting beam to be raised and lowered, respectively.

A mobile unit (5) is described for measuring running paths for handling systems, in particular bridge cranes, sliding on a route (2), comprising at least one first measuring device (62) which constitutes a space reference of the mobile unit (5) with respect to at least one fixed measuring unit (3) comprising second measuring device (61), the first measuring device (62) being connected to the mobile unit (5) by interposing at least one handling device adapted to synchronize measuring operations between the first measuring device (62) and the second measuring device (61) of the fixed measuring unit (3). A system for measuring (1) running paths for handling systems through such mobile unit (5) and a process for measuring through such system (1) are further described.

A mobile unit (5) is described for measuring running paths for handling systems, in particular bridge cranes, sliding on a route (2), comprising at least one first measuring device (62) which constitutes a space reference of the mobile unit (5) with respect to at least one fixed measuring unit (3) comprising second measuring device (61), the first measuring device (62) being connected to the mobile unit (5) by interposing at least one handling device adapted to synchronize measuring operations between the first measuring device (62) and the second measuring device (61) of the fixed measuring unit (3). A system for measuring (1) running paths for handling systems through such mobile unit (5) and a process for measuring through such system (1) are further described.

A self-steering wheel for use with an overhead crane or a train car includes a trapezoidal shaped tread formed as part of the wheel. The trapezoidal shaped wheel tread, when riding on a steel track, will cause the wheel to self-steer and therefore cause self-steering of the overhead crane or train.

A traveling vehicle system includes a track including a first gap, a partial track, and a second gap, a traveling vehicle including a drive wheel and first and second auxiliary wheels, a first auxiliary track on a near side of the first gap in a traveling direction and in contact with a lower end of the first auxiliary wheel while a lower end of the drive wheel passes through the first gap when the drive wheel enters the partial track, and a second auxiliary track on a far side of the second gap in the traveling direction and in contact with a lower end of the second auxiliary wheel while the lower end of the drive wheel passes through the second gap when the drive wheel leaves the partial track.