A shaft coupling for a rolling mill

Abstract

The invention provides a coupler for a rolling mill. The coupler comprises an internal-tooth flange, an external-tooth connector and a single-section crossed universal shaft with a fork head, wherein the internal teeth of the internal-tooth flange are meshed with the external teeth of the external-tooth connector; one end, which is away from the internal-tooth flange, of the external-tooth connector is connected with a connection pipe; one end, which is away from the external-tooth connector, of the connection pipe is fixedly connected with the fork head; lubricating oil is filled in a cavity formed between the internal-tooth flange and the external-tooth connector; a sealing end cover is arranged on the end part of the meshed end of the external-tooth connector and the internal-tooth flange and seals the external-tooth connector through a sealing ring. The coupler disclosed by the invention has large transmission torque and is high in transmission balance; the shortcomings of a rolling mill in a severe environment with a small space and a lot of water vapour are overcome; the coupler has an automatic lubricating function, can realize buffering and shock absorption and protect a transmission system, is convenient to mount and dismount and long in service life.

Description

technical field [0001] The invention relates to a steel rolling transmission equipment, in particular to a rolling mill shaft coupling, which is applied to the power transmission of rough rolling mills and finishing mills in steel mills. Background technique [0002] At present, domestic rolling mills generally use double-section cross-shaft universal couplings to transmit torque. During the process of torque transmission, steel mills have large impact, strong vibration, frequent positive and negative rotation changes, and high ambient temperature. Defects such as large water vapor can easily cause the fracture of the cross shaft of the above-mentioned cross-shaft universal coupling, and cause plastic indentation or pitting and peeling on the surface of the cross shaft journal of the above-mentioned cross-shaft universal coupling. In addition, in view of the large rolling mill equipment, compact components, and narrow site space, the selection of the double cross-shaft unive...

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Problems solved by technology

[0002] At present, domestic rolling mills generally use double-section cross-shaft universal couplings to transmit torque. During the process of torque transmission, steel mills have large impact, strong vibration, frequent positive and negative rotation changes, and high ambient temperature. Defects such as large water vapor can easily cause the fracture of the cross shaft of the above-mentioned cross-shaft universal coupling, and cause plastic indentation or pitting and peeling on the surface of the cross shaft journal of the above-mentioned cross-shaft universal coupling

In addition, in view of the large rolling mill equipment, compact components, and narrow site space, the selection of the double cross-shaft universal joint in the prior art will often shorten the service life of the universal joint at the rolling mill, and each time Replacement takes a long time

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