Guide roll and guide roll assembly fixture

Abstract

The invention discloses a guide roll. The guide roll comprises a guide roll body, a pair of bearings which are separately arranged on the upper and lower end surfaces of the guide roll body and an oil distribution sheet arranged between the bearings, wherein the upper end lower bottom surfaces of the guide roll body are separately provided with a bearing assembly hole used for accommodating the bearings; an oil distribution hole for accommodating the oil distribution sheet is formed between the bearing assembly holes; and only one end surface of each bearing is covered with a sealing cover. The invention further discloses a guide roll assembly fixture which comprises a base arranged on an ordinary worktable, a material table which is arranged on the base and is used for sequentially placing guide roll parts to be assembled and a compaction device which is fixedly connected to the base and is used for assembling the guide roll parts which are sequentially placed. According to the guide roll, a lubricant supplement problem of the guide roll is ingeniously solved due to the structure of the guide roll; the two bearings on the same guide roll can be assembled synchronously by the guide roll assembly fixture; and two guide rolls on the same use position can be finished synchronously; and the service life of the guide roll is effectively ensured and prolonged.

Description

technical field [0001] The invention relates to the field of high-speed wire rod rolling in steel rolling production, in particular to a guide roller and a guide roller assembly tool. Background technique [0002] During high-speed wire rolling, the size of the finished wire rod is small and the rolling passes are many, so the rolling speed is high when the rolled piece enters the finishing rolling area. In order to help the rolled piece bite smoothly and improve the surface quality of the wire rod, a pair of guide rollers need to be installed at each entrance of the finishing rolling area. The working conditions of the guide rollers of the finishing mill are very harsh, and they are always in a state of high-speed rotation. The frequencies are larger. Guide rollers with a longer life help to improve product quality and improve the operating efficiency of the production line, reducing the time and frequency of maintenance and replacement parts. An important reason for the...

AI Technical Summary

Problems solved by technology

An important reason for the failure of the guide roller is that the lubrication performance of the guide roller is poor, or it is inconvenient to replenish lubricating oil, and the effect of relubrication is not good, which leads to premature dry friction of the guide roller and accelerates the damage of the guide roller; another important reason for the failure of the guide roller The reason is that the bearings in the guide rollers are under uneven force, causing the bearing on one side of the guide roller to fail first due to the greater force, or the two guide rollers at the same position are under uneven force, resulting in a larger guide roller on one side of the wire. The faster one fails first, and more of these two situations occur at the same time

[0003] The existing guide rollers with bearings are often processed with oil injection holes inside the guide roller body, and the outer surface is installed with an oil injection nozzle to add oil. However, oil injection through the oil injection holes will lead to many and difficult processing procedures for the guide roller body, and increase the cost of the guide roller body. The processing cost, and the uneven distribution of the mass of the guide roller in the circumferential direction, produces an unbalanced moment of inertia when the guide roller is running. Although the uneven distribution of the circumferential mass is relatively light, due to the high temperature, high stress and high intensity Under the environment, the existence of the moment of inertia will aggravate the deformation of the accelerated parts. The first thing to bear the brunt is that the deformation of the oil injection hole area will be aggravated. The size of the oil injection hole itself is also affected by the deformation, which makes it difficult to ensure the quality of lubrication; , the installation of the bearings is often done by hand one by one, it is difficult to ensure the degree of stress and concentricity of the bearings on both sides of the same guide roller after installation, further, the installation conditions of the two guide rollers that cooperate with each other at the same position The state is also different, and it is easy to cause uneven force on the inside of the guide roller or on the two guide rollers at the same position

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