A roller frame with adjustable inner and outer diameters for large pipes

Abstract

The invention provides an inner-diameter and outer-diameter adjustable roller carriage for a large pipe. The roller carriage mainly comprises an outwards-extending supporting part, an inwards-extending supporting part and a hand wheel adjusting mechanism. The roller carrier has the effective gain that when the large pipe rolls around a rotating shaft, carrying rolling is performed, and meanwhile the inner diameter and the outer diameter are adjustable; the roller carriage is suitable for the inner diameter of pipes with different radii and the outer diameter of a center rotating shaft and is particularly suitable for uncoiling and rolling coiling of steel coil straps, plastic bag material shafts and various strap-shaped materials; and the defects that when a material shaft is directly arranged on the center rotating shaft in a sleeving manner, various kinds of uneven stress of rotation is caused because rotating centers are not concentric, and material straps deflect are overcome to the maximum extent. The roller carriage is simple in structure, and torque is transmitted through a self-locking thread so that self-rollback can be effectively prevented; and a large bevel gear is meshed with four small bevel gears at the same time, diving synchronization is achieved to the maximum extent while the roller carrier is simple and reliable, and the applicability is high.

Description

technical field [0001] The invention provides a roller rack with adjustable inner and outer diameters for large pipes, which belongs to the technical field of roller racks. Background technique [0002] In the actual production process of the factory, the uncoiling and rolling of strip-shaped material spools is widely used, such as the uncoiling of steel coils, the uncoiling of material spools in the process of making plastic bags, etc., and now the material spools are generally hung directly On the central rotating shaft, in general, there will be a situation where the rotation is not concentric; this will cause force fluctuations on the material shaft during the rotation process, and the force will be extremely uneven, which will inevitably result in production that requires uniform rotation and uniform force. Very big trouble, thus destroying the production process. Contents of the invention [0003] In view of the above-mentioned problems, the present invention provid...

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Problems solved by technology

[0002] In the actual production process of the factory, the uncoiling and rolling of strip-shaped material spools is widely used, such as the uncoiling of steel coils, the uncoiling of material spools in the process of making plastic bags, etc., and now the material spools are generally hung directly On the central rotating shaft, under normal circumstances, there will be a situation where the rotation is not concentric; this will cause force fluctuations on the material shaft during the rotation process, and the force will be extremely uneven, which will inevitably cause problems for production that requires uniform rotation and uniform force. Very big trouble, thus destroying the production process

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