JP2013202637A - Guide roller - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a guide roller which is suitably used for guiding a hot steel.SOLUTION: A guide roller 1 has an outer peripheral member 2, an inner peripheral member 3 and a plurality of fins 4. A hot steel is brought into contact with the outer peripheral surface of the outer peripheral member 2. The plurality of the fins 4 are arranged in the same direction between the outer peripheral member 2 and the inner peripheral member 3, and each fin 4 is fixed to the outer peripheral surface of the inner peripheral member 3 and the inner peripheral surface of the outer peripheral member 2. When the outer peripheral member 3 is rotated by being brought into contact with the hot steel, each fin 4 is rotated and a wind is generated. The outer peripheral member 3 the temperature of which is raised by the heat from the hot steel is cooled by this wind.

Description

  The present invention relates to a guide roller for guiding a hot steel material.

2. Description of the Related Art Conventionally, in a line that transports and cuts a hot steel material such as a billet, the hot steel material is guided from the side by a guide roller. As a conveyance guide apparatus provided with such a guide roller, there exists a thing described in patent document 1, for example. This device is shown in FIGS.
As shown in FIG. 3, the guide roller 100 is disposed on one side of the roller table 110 together with a plate-like fixed guide 111. A plurality of the fixed guides 111 are arranged at predetermined intervals, and the guide roller 100 is arranged between these fixed guides 111. As shown in FIG. 4, the support shaft 101 of the guide roller 100 is rotatably supported by a tip of an arm 102 extended from the roller table 110 via a bearing 103. The base end of the arm 102 is fixed to the rotating cylinder 120.

  The rotating cylinder 120 is rotatably supported by a lower half portion of a support shaft 130 that is erected and fixed to the roller table 110 via a thrust bearing 140. The upper end surface of the rotating cylinder 120 is a slope 121. A lifting cylinder 150 having an inclined surface 151 in contact with the upper inclined surface 121 of the rotating cylinder 120 is fitted to the upper half of the support shaft 130. A key 125 protruding from the upper half portion of the support shaft 130 is fitted into a long hole 152 formed in the elevating cylinder 150. The elevating cylinder 150 is always pressed and urged downward by the thin shaft portion 160 and the spring 170.

Further, a side shifter 182 that is operated by the hydraulic cylinder device 181 is installed on the upper side of the roller table 110, and the carrier 190 such as a billet is moved in parallel by the side shifter 182. When the conveying material 190 is pushed to one side of the roller table 110 by the side shifter 182, the conveying material 190 comes into contact with the fixed guide 111 and tries to push the guide roller 100 to the other side of the roller table 110.
At that time, the guide roller 100 is pushed back to one side of the roller table 110 by a push-back mechanism including the rotating cylinder 120, the lifting cylinder 150, the thin shaft portion 160, the spring 170, and the like. Therefore, as shown in FIG. 3, the conveying material 190 is conveyed while being guided by the guide roller 100 while maintaining a predetermined interval between the conveying material 190 and the fixed guide 111.

Japanese Utility Model Publication No. 61-53006

The guide roller that guides the hot steel material has a grease that lubricates the rolling bearing interposed between the support shaft and the guide roller when the temperature of the guide roller rises due to the contact of the hot steel material. Rotation failure may occur.
The subject of this invention is providing the guide roller suitable for the use which guides a hot steel material.

  In order to solve the above problems, a guide roller of the present invention is a guide roller for guiding a hot steel material, and an outer peripheral member having an outer peripheral surface with which the hot steel material contacts and a support shaft via a bearing. An inner circumferential member that is rotatably supported, and is disposed between the inner circumferential member and the outer circumferential member, and rotates together with the inner circumferential member and the outer circumferential member when the hot steel material contacts the outer circumferential surface. And a blade for generating wind.

  In the guide roller according to the present invention, when the hot steel material comes into contact with the outer peripheral surface of the outer peripheral member and the outer peripheral member rotates, the blades disposed between the inner peripheral member and the outer peripheral member rotate to generate wind. Since the heat from the hot steel material is conducted by this wind and the outer peripheral member whose temperature has risen is cooled, the heat from the hot steel material is hardly conducted to the inner peripheral member. As a result, the grease that lubricates the rolling bearing interposed between the support shaft and the guide roller is difficult to adhere, so that it is possible to maintain good rotation of the rolling bearing.

  The guide roller according to the present invention prevents heat from the hot steel material from being transmitted to the inner peripheral member, thereby preventing adhesion of grease for lubricating the rolling bearing interposed between the support shaft and the guide roller. It is suitable for use for guiding hot steel materials.

It is a perspective view which shows the guide roller equivalent to one Embodiment of this invention. It is sectional drawing which shows the attachment state of a guide roller. It is a top view which shows the prior art example of the conveyance guide apparatus provided with the guide roller. It is a fragmentary sectional view which shows the guide roller and arm attachment part in the apparatus of FIG.

Embodiments of the present invention will be described below.
As shown in FIGS. 1 and 2, the guide roller 1 of this embodiment includes an outer peripheral member 2, an inner peripheral member 3, and a plurality of fins (blades) 4. The outer peripheral member 2 is a metal cylindrical body, and guides the hot steel material on the outer peripheral surface of the cylindrical body. That is, the hot steel material contacts the outer peripheral surface of the outer peripheral member 2.
The inner peripheral member 3 is a metal part in which a cylindrical portion 31 and a disc portion 32 that closes one axial end of the cylindrical portion 31 are integrated. The axial dimension of the cylindrical portion 31 is the same as that of the outer peripheral member 2, and the inner diameter of the cylindrical portion 31 is slightly larger than the diameter of the support shaft 5. The inner circumferential member 3 has a larger axial dimension than the outer circumferential member 2 by the amount of the disc portion 32.

The plurality of fins 4 are made of metal and arranged in the same direction between the outer peripheral member 2 and the cylindrical portion 31 of the inner peripheral member 3, and the outer peripheral surface of each fin 4 and the cylindrical portion 31 and the inner peripheral surface of the outer peripheral member 2. Is fixed by welding.
As shown in FIG. 2, in the guide roller 1, the cylindrical portion 31 of the inner peripheral member 3 is rotatably supported on the support shaft 5 via a radial bearing 6. The guide roller 1 is disposed with the disk portion 32 of the inner peripheral member 3 facing upward, and the support shaft 5 is inserted from the lower opening of the cylindrical portion 31. The support shaft 5 is fixed to the arm 7 of the conveyance guide device.

In the guide roller 1 according to this embodiment, when the hot steel material comes into contact with the outer peripheral surface of the outer peripheral member 2, the outer peripheral member 2, the inner peripheral member 3, and the fin 4 rotate integrally, and the hot steel material is guided. At the same time, wind is generated by the rotation of the fin 4. When the guide roller 1 rotates clockwise, the wind flows from the bottom to the top.
Thereby, since the outer peripheral member 2 whose temperature has increased due to the contact with the hot steel material is cooled, heat from the hot steel material is hardly transmitted to the inner peripheral member 3 as compared with the guide roller 1 without the fins 4. In connection with this, since it becomes difficult to produce malfunctions, such as the grease sealed in the radial bearing 6 being fixed, rotation failure of the guide roller 1 can be prevented.

DESCRIPTION OF SYMBOLS 1 Guide roller 2 Outer peripheral member 3 Inner peripheral member 31 Cylindrical part 32 Disc part 4 Fin (blade)
5 Support shaft 6 Radial bearing 7 Arm 100 Guide roller 101 Support shaft 102 Arm 103 Bearing 110 Roller table 111 Fixed guide 120 Rotating cylinder 121 Slope 125 Key 130 Support shaft 140 Thrust bearing 151 Slope 150 Lifting cylinder 152 Long hole 160 Narrow Shaft portion 170 Spring 181 Hydraulic cylinder device 182 Side shifter 190 Conveying material such as billet

Claims (1)

A guide roller for guiding hot steel materials,
An outer peripheral member having an outer peripheral surface with which the hot steel material contacts;
An inner peripheral member rotatably supported by a support shaft via a bearing;
A blade disposed between the inner peripheral member and the outer peripheral member, and rotating with the inner peripheral member and the outer peripheral member by causing the hot steel material to contact the outer peripheral surface;
Having a guide roller.

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