Safety cover plate

Abstract

The invention provides a safety cover plate comprising a plurality of rectangular cover plate units with equal width, wherein the rectangular cover plate units are connected end to end by a hinge shaft so as to form a cover plate group with a foldable structure. The cover plate group is connected to a steel coil trolley from two sides, and can be folded or unfolded respectively along with the left or right movement of the trolley; a roller wheel is installed at the bottom of each cover plate unit which rolls on a track through the roller wheel; the track comprises a pair of horizontal tracks arranged on the outer side, the horizontal tracks are separated from the middle parts, middle tracks with the gauge smaller than that of the horizontal tanks are arranged on the inner sides of the separated parts of the horizontal tracks, and circular-arc tracks are arranged at two ends of the horizontal sections of the middle tracks; the even number rows of the cover plate units are all provided with two groups of roller wheels which correspond to the two groups of tracks, and only one group of roller wheels of the odd number rows of cover plate units correspond to the middle arc tracks. The safety cover plate has a simple structure, light weight and small frictional resistance, can run stably and reliably, does not have height difference, cannot affect the walking of people, and is high in safety.

Description

technical field [0001] The invention relates to the technical field of production equipment in the metallurgical industry, in particular to a safety cover for a cold-rolled steel strip production line. Background technique [0002] At present, the entrance section and exit section of various cold-rolled strip steel processing lines are run back and forth by the steel coil trolley, and the raw steel coil is taken from the saddle and then sent to the uncoiler reel of the unit, and the finished steel coil The coil is unloaded from the coiler drum and fed into the saddle for storage. [0003] The steel coil trolley runs back and forth on the steel rails in the pit through the wheels. According to the different technological layout of the production unit, the depth of the steel coil trolley pit is generally between -2.50m~-7.95m. In order to protect the safety of the unit operators, the steel coil trolley There must be safety covers at both ends of the trolley to prevent the ope...

AI Technical Summary

Problems solved by technology

[0005] The disadvantages are: The number of superimposed layers of the cover plate is generally 3~5 layers, and as the traveling distance of the steel coil trolley increases, the number of superimposed layers also increases (the length of the cover plate generally does not exceed 3000mm, and it is easy to deform if it is too long), so it is difficult to ensure that the steel coil trolley is dragged smoothly Move or push the roll of the roller; The width of the cover plate is generally between 1200mm and 1750mm. If multiple pieces are superimposed, the deformation of the cover plate or the jamming of the rollers will cause the cover plate to fail to open or shrink normally. Once this happens, the steel coil trolley will not be able to transport the steel coil. Affect production, which often occurs in real production; There is a height difference on the surface of each cover plate, and the height difference of each layer is about 82.5mm. The height difference of the cover plate is not beautiful, but also affects the safety of the operator walking on the cover plate; The cover plate is welded by section steel and thin steel plate, the total weight is relatively large (the total weight of the cover plates on both sides is 2422kg), the friction resistance is relatively large, and it is easy to generate scratching noise during operation

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