Rail butt joint structure

Abstract

The invention relates to a rail butt joint structure which comprises a first rail and a second rail. A preserved gap exists between the end of the first rail and the end of the second rail; inclined angles are formed by the preserved gap and the extending directions of the rails, and the inclined angles are larger than 0 degree and smaller than 90 degrees; the end of the first rail is fixed through a bolt round hole, the end of the second rail is fixed through a bolt long hole, and when the environment temperature is changed, a bolt and a long hole slide relatively. By means of the rail butt joint structure, popularization in a large-scope temperature alternating environment can be achieved, and the problem about rail heat expansion under large-scope temperature alternating can be effectively solved through the structural design; and the wheel blocking phenomenon caused when a chain / crane passes through a joint is avoided, and the rail installing and butt joint accuracy is guaranteed.The running safety and reliability of hoisting equipment are improved.

Description

technical field [0001] The field of the invention belongs to the connection structure between the traveling tracks of a monorail crane in a large-scale temperature alternating environment. Background technique [0002] The joints of the monorail crane track are usually spliced ​​by straight seams, the reserved seams are usually 2-3mm, and the bolt holes are round holes, and the diameter of the round holes is usually 1-2mm larger than the diameter of the bolts. However, this connection form cannot meet the use environment with a large temperature range, and there are main problems: 1) When the ambient temperature is variable and the range is large, according to the material characteristics of the track and its thermal expansion coefficient, usually 2 to 3 mm of the seam is reserved The gap often cannot meet the requirements of the track expansion and contraction. When the cold shrinks, the gap will become larger, and the wheel will be stuck after the gap becomes larger. Bolt...

AI Technical Summary

Problems solved by technology

However, this connection form cannot meet the use environment with a large temperature range, and there are main problems: 1) When the ambient temperature is variable and the range is large, according to the material characteristics of the track and its thermal expansion coefficient, usually 2 to 3 mm of the seam is reserved The gap often cannot meet the requirements of the track expansion and contraction. When the cold shrinks, the gap will become larger, and the wheel will be stuck after the gap becomes larger. The bolts have to bear the temperature stress of the track. The long-term existence of the shear force is very detrimental to the service life of the bolts and affects safety.

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