The invention relates to a method to form a rail joint, in which staggerings (6, 7) corresponding to each other are made in joinable solid-profile rail ends (4, 5) of parts (2, 3) of a rail (1) so that when a completed rail joint is viewed from above the rail heads bond; both rail ends are secured to a corresponding mounting; the rail ends secured to the mountings are brought against each other whereby said bonding is established; and the mountings that are against each other are secured to one another. The staggerings (6, 7) are made in such a manner that the lower edges (4a, 5a) of the rail ends (4, 5) are left substantially unstaggered whereby the staggerings extend from these lower edges towards the top surfaces or the rail ends; and the rail ends (4, 5) are welded by their lower edges (4a, 5a) at their entire width to their mountings (8, 9). The invention also relates to a rail joint made by this method.

The invention relates to a method to form a rail joint, in which staggerings (6, 7) corresponding to each other are made in joinable solid-profile rail ends (4, 5) of parts (2, 3) of a rail (1) so that when a completed rail joint is viewed from above the rail heads bond; both rail ends are secured to a corresponding mounting; the rail ends secured to the mountings are brought against each other whereby said bonding is established; and the mountings that are against each other are secured to one another. The staggerings (6, 7) are made in such a manner that the lower edges (4a, 5a) of the rail ends (4, 5) are left substantially unstaggered whereby the staggerings extend from these lower edges towards the top surfaces or the rail ends; and the rail ends (4, 5) are welded by their lower edges (4a, 5a) at their entire width to their mountings (8, 9). The invention also relates to a rail joint made by this method.

An arrangement for secure transfer of a travelling trolley between a first and a second rail in a hoisting system is provided. The arrangement including: a first and a second engagement devices are arranged to engage when the rails are aligned; a third and a fourth engagement devices are arranged to engage when the rails are aligned; a pivotable stop which in a closed position is arranged to form a barrier in the path of the trolley, and which is coupled with the first engagement device such that the first stop is pivoted out of the path of the trolley when the first and the second engagement devices engage, such that the trolley can pass between the rails; a pivotable second stop which in a closed position is coupled with the third engagement device.

An arrangement for secure transfer of a travelling trolley between a first and a second rail in a hoisting system is provided. The arrangement including: a first and a second engagement devices are arranged to engage when the rails are aligned; a third and a fourth engagement devices are arranged to engage when the rails are aligned; a pivotable stop which in a closed position is arranged to form a barrier in the path of the trolley, and which is coupled with the first engagement device such that the first stop is pivoted out of the path of the trolley when the first and the second engagement devices engage, such that the trolley can pass between the rails; a pivotable second stop which in a closed position is coupled with the third engagement device.

A rail 13 for supporting a trolley 14 of gantry crane 10 has rail sections 18,19 on opposites sides of a joint 17 provided with end regions 20 of a modified rail head profile that directs the wheels of the trolley 14 over ridges 23 that rise gradually above the height L1 of the rail head 27 while approaching the joint 17. The ridges 23 then carry the wheels into the joint 17 where the transition from one rail section to the next occurs over reinforced region. The load-bearing apexes A of the ridges are disposed away from the side edges of the rail 13 and away from the ends of each projecting portion 21. The rail increases the operational life of a crane rail by reducing wear rate in high stress areas of the joint 17 and by adding additional wear material above the rail at the joint.

A rail 13 for supporting a trolley 14 of gantry crane 10 has rail sections 18,19 on opposites sides of a joint 17 provided with end regions 20 of a modified rail head profile that directs the wheels of the trolley 14 over ridges 23 that rise gradually above the height L1 of the rail head 27 while approaching the joint 17. The ridges 23 then carry the wheels into the joint 17 where the transition from one rail section to the next occurs over reinforced region. The load-bearing apexes A of the ridges are disposed away from the side edges of the rail 13 and away from the ends of each projecting portion 21. The rail increases the operational life of a crane rail by reducing wear rate in high stress areas of the joint 17 and by adding additional wear material above the rail at the joint.