A storage system includes a first region and a second region of a rail system. Each of the first region and the second region has rails with a profiled upper surface that define one or more tracks for supporting container handling vehicles, and each rail of at least one pair of parallel rails of the first region is connected to a corresponding rail of a pair of rails of the second region via an expansion joint. The expansion joint includes a first rail element, a second rail element, and a profiled upper surface. The rail elements are elongate and configured at a first end to allow the first ends of the first and second rail elements to move relative to one another in a longitudinal direction in a junction area where they overlap. The profiled upper surface defines one or more tracks. The tracks extend from the first rail element through the junction area to the second rail element. A second end of the first rail element is pivotably connected to the first region of the rail system around a first vertical axis. A second end of the second rail element is pivotably connected to the second region of the rail system around a second vertical axis.

A storage system includes a first region and a second region of a rail system. Each of the first region and the second region has rails with a profiled upper surface that define one or more tracks for supporting container handling vehicles, and each rail of at least one pair of parallel rails of the first region is connected to a corresponding rail of a pair of rails of the second region via an expansion joint. The expansion joint includes a first rail element, a second rail element, and a profiled upper surface. The rail elements are elongate and configured at a first end to allow the first ends of the first and second rail elements to move relative to one another in a longitudinal direction in a junction area where they overlap. The profiled upper surface defines one or more tracks. The tracks extend from the first rail element through the junction area to the second rail element. A second end of the first rail element is pivotably connected to the first region of the rail system around a first vertical axis. A second end of the second rail element is pivotably connected to the second region of the rail system around a second vertical axis.

A beveled-end steel railroad. The use of small-acute-angle oblique-gap connection design and vertical gap reservation design can solve both the problem of impact between wheels and rails and the problem of thermal stress between steel rails. The design containing both beveled ends and flat ends that are complementary to each other can further greatly reduce railroad construction and reformation costs. The beveled-end steel railroad has a simple structure, is secure, reliable, and durable, can provide a fast, stable, and non-noisy driving effect, can implement highly-efficient and energy-saving operation, is easy to construct and reform, can be easily repaired and maintained, has a significant advantage in costs, and can implement both good performance and good profitability.

A beveled-end steel railroad. The use of small-acute-angle oblique-gap connection design and vertical gap reservation design can solve both the problem of impact between wheels and rails and the problem of thermal stress between steel rails. The design containing both beveled ends and flat ends that are complementary to each other can further greatly reduce railroad construction and reformation costs. The beveled-end steel railroad has a simple structure, is secure, reliable, and durable, can provide a fast, stable, and non-noisy driving effect, can implement highly-efficient and energy-saving operation, is easy to construct and reform, can be easily repaired and maintained, has a significant advantage in costs, and can implement both good performance and good profitability.

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.

A surface-seamless steel rail is provided in the present invention. Said surface-seamless steel rail includes a right connecting part located on one side of said steel rail, a left connecting part located on the other side of said steel rail, and a seamless spring piece located on the top side of said steel rail. Both said left connecting part and said right connecting part include a plug portion in embedded engagement with each other. Said seamless spring piece includes a fixed portion at one end and a free portion at the other end, said fixed portion is fixedly connected on top side of said plug portion of one of said left connecting part and said right connecting part. The other of said left connecting part and said right connecting part is provided with an arc-shaped channel at its interior body, said free portion of said seamless spring piece is suitably inserted into said arc-shaped channel.

A surface-seamless steel rail is provided in the present invention. Said surface-seamless steel rail includes a right connecting part located on one side of said steel rail, a left connecting part located on the other side of said steel rail, and a seamless spring piece located on the top side of said steel rail. Both said left connecting part and said right connecting part include a plug portion in embedded engagement with each other. Said seamless spring piece includes a fixed portion at one end and a free portion at the other end, said fixed portion is fixedly connected on top side of said plug portion of one of said left connecting part and said right connecting part. The other of said left connecting part and said right connecting part is provided with an arc-shaped channel at its interior body, said free portion of said seamless spring piece is suitably inserted into said arc-shaped channel.