JP2006159256A - Fixing method when electromagnetic coil of electromagnetic tooth clutch of screw-down pointer of slab blooming mill is burned out - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a fixing method when the electromagnetic coil of the electromagnetic tooth clutch of the screw-down pointer of a slab blooming mill is burned out. <P>SOLUTION: In the case the electromagnetic coil is burned out in the electromagnetic tooth clutch of the screw-down pointer of the slab blooming mill, a face gear 9 and a face gear 10 are engaged with each other and fixed by fixing a ring-shaped parts 15 to a hub 4, fixing properly cut bolts 17 to the ring-shaped part 15 which is fixed to the hub 4 and pressing an electromagnetic absorber 2 against the side of an electromagnetic coil unit 1 by using a cylindrical parts 16 whose position is adjustable by the properly cut bolts 17 and nuts 18. In this fixing method of the electromagnetic tooth clutch of the screw-down pointer of the slab blooming mill, the respective single articles of this tool composed of the ring-shaped part 15 and the cylindrical parts 16, the properly cut bolts 17 and nuts 18 have weight which is potable manually by a person and has structure by which all fixing parts are simply fixed by bolting and the torque of the input shaft 19 is transmittable to the output shaft 20. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention uses a jig consisting of a ring-shaped part, a cylindrical part, a slashed bolt, and a nut when the electromagnetic coil of the electromagnetic tooth clutch of the rolling guide burns out in the steel slab block mill equipment. The present invention relates to a method for fixing an electromagnetic tooth clutch of a reduction guide in a billet bundling machine that restores the torque of an input shaft to an output shaft over time.

  An electromagnetic tooth clutch is a kind of so-called electromagnetic clutch, which attracts an electromagnetic attracting body by exciting an incorporated electromagnetic coil to generate an electromagnetic attracting force, and is attached to each of the electromagnetic body and the electromagnetic attracting body. By engaging the gear, the torque of the input shaft is transmitted to the output shaft. When the electromagnetic tooth clutch is used for a long period of time, or when the excitation and demagnetization of the electromagnetic coil is extremely intense, the load on the electromagnetic coil increases when the gap between the electromagnetic coil and the electromagnetic attractant widens. Burns out and the torque of the input shaft cannot be transmitted to the output shaft, resulting in a machine stoppage.

  Accordingly, FIG. 2 shows a schematic diagram of a reduction guide electromagnetic tooth clutch of a general steel piece bundling device. In FIG. 2, the reduction needle electromagnetic tooth clutch includes an electromagnetic coil unit 1, an electromagnetic attracting body 2, a bearing case 3, a hub 4, a bearing 5, a bearing 6, a spring 7, a spring 8, a face gear 9, a face gear 10, and a spline gear. 11, a spline gear 12, and other incidental equipment.

  FIG. 2 shows the operating state of the electromagnetic tooth clutch. FIG. 2 shows the state of the reduction guide electromagnetic tooth clutch of the steel slab ingot rolling apparatus when the clutch is engaged. The electromagnetic coil unit 1 is excited to generate an electromagnetic attractive force that is greater than the elastic force of the springs 7 and 8, and the electromagnetic attractive body 2 is attracted to the electromagnetic coil unit 1. By this attraction, the face gear 9 and the face gear 10 provided in the electromagnetic coil unit 1 and the electromagnetic attracting body 2 are engaged with each other, and the spline gear 11 and the spline provided in the electromagnetic attracting body 2 and the bearing case 3 respectively. Torque from the input shaft 19 is transmitted to the hub 4 via the gear 12, and rotational force is transmitted from the input shaft 19 to the output shaft 20.

  FIG. 3 shows the operating state of the electromagnetic tooth clutch. FIG. 3 shows the state when the electromagnetic tooth clutch of the rolling guide of the steel slab bundling device is disengaged and the electromagnetic attraction by the electromagnetic coil of the electromagnetic coil unit 1. Since there is no force, the face gear 9 and the face gear 10 attached to each of the electromagnetic coil unit 1 and the electromagnetic attracting body 2 do not mesh with each other, and therefore the state when the torque cannot be transmitted to the hub 4 is shown. Yes. That is, the torque from the input shaft 19 is not transmitted to the hub 4.

  FIG. 4 is a diagram for explaining an emergency recovery method at the time of coil burnout of a rolling guide electromagnetic tooth clutch of a conventional steel piece block rolling apparatus. In this case, by applying an external force in the direction of the arrow 13 to the electromagnetic attracting body 2, the face gear 9 and the face gear 10 respectively attached to the electromagnetic coil unit 1 and the electromagnetic attracting body 2 are engaged, In the state, the face gear 9 and the face gear 10 are joined and integrated by welding at the welded portion 14 to transmit the torque of the input shaft 19 to the hub 4.

  In general, when the electromagnetic coil of the electromagnetic tooth clutch is burned out, there is no method other than replacing the electromagnetic coil in order to restore the electromagnetic tooth clutch. However, when it is desired to transmit the torque of the input shaft to the output shaft urgently, the input shaft and the output shaft are fixed and integrated by some method such as welding as described above with reference to FIG. .

  Conventionally, as a countermeasure against such burning of the electromagnetic coil, various gap adjusting devices have been proposed for electromagnetic clutches and brakes (see, for example, Patent Document 1). In the case of the gap adjusting device for the electromagnetic clutch / brake in this example, the gap between the rotating body and the friction body of a general electromagnetic clutch / brake is adjusted to prevent the electromagnetic coil from burning. Electromagnetic tooth clutch that is always in an excited state, demagnetized only for 4 to 5 hours per month, and is used in a place with a large torque, like the electromagnetic tooth clutch of the rolling guide of a steel piece block mill This does not solve the problem of the emergency recovery method at the time of electromagnetic coil burnout. Moreover, there have not been many proposals for solving or coping with problems under such circumstances.

JP-A-56-90131

  The problem to be solved by the present invention is that the torque of the input shaft torque can be directly transmitted to the output shaft without going through the electromagnetic tooth clutch when the electromagnetic coil of the rolling guide electromagnetic tooth clutch of the steel slab ingot rolling device burns out. It is to propose a method to recover in time.

  Means for solving the problems of the present invention is that, in the invention of claim 1, when the electromagnetic coil burns down in the reduction guide electromagnetic tooth clutch of the steel slab ingot rolling device, the hub 4 of the output shaft 20 is ring-shaped. The component 15 is fixed by the thin portion 15a on the inner peripheral side, and the bolt one end portion 17a of the cutting bolt 17 is fixed to the thick portion 15b on the outer peripheral side of the ring-shaped component 15 fixed to the hub 4 by screwing. Further, the flange part 16c on one end side in the axial direction of the tubular part 16 is fixed to the other end part 17b of the cutting bolt 17 by two nuts 18 and 18 so that the position can be adjusted. A gap is provided between the inner periphery of the component 16 and the outer periphery of the bearing case 3, and a thin outer peripheral surface inner surface 16 a formed on the other end side in the axial direction of the cylindrical component 16 is disposed on one end side in the axial direction of the electromagnetic attracting body 2. The cylindrical portion outer peripheral surface 2b is covered, and the cylindrical portion end surface 2a on one end side of the electromagnetic attracting body 2 is brought into contact with the thick portion inner end surface 16b on the other end side of the cylindrical component 16, thereby making the electromagnetic attracting body 2 an electromagnetic coil unit. Pressing against the spring 8 against one side and outputting the torque of the input shaft 19 characterized by engaging the face gear 9 of the electromagnetic coil unit 1 with the face gear 10 of the electromagnetic attracting body 2 by this pressing. A piece of steel that can be transmitted to the shaft 20 A reduction guidelines electromagnetic tooth clutch fixing method of the extending device.

  The operation and effect of the present invention in the above means will be described. In the above method, the jig parts composed of the ring-shaped part 15 and the cylindrical part 16, the cutting bolt 17 and the nut 18 are each a single item. The mounting parts of all these jig parts can be assembled by bolting, and the input shaft 19 and the output shaft 20 when the electromagnetic coil burns in the conventional method. As in the case where emergency measures are taken by the method of forming the welded portion 14 between the electromagnetic coil unit 1 and the electromagnetic attracting body 2, there is no need for welding work, and one worker alone is a ring-shaped part in the means of the present invention. 15, a cylindrical part 16, a jig part composed of a dimensioning bolt 17 and a nut 18 can be easily attached by screwing a bolt 21 and welded. Since there is no it, it is possible to easily replace the part, it does not occur waste.

  According to the present invention, when an electromagnetic coil of a rolling guide electromagnetic tooth clutch of a steel piece bundling device is burned out, it can be fixed so that the torque of the input shaft can be transmitted to the output shaft easily and in a short time by one worker. As a result, the emergency repair time can be greatly reduced, and there is no need to weld the electromagnetic tooth clutch body as in the past, so the electromagnetic tooth clutch can be overhauled simply by replacing the burned electromagnetic coil. The repair cost can be greatly reduced, and the ring parts and cylindrical parts, which are jig parts used, are weights that can be carried by one person, and each mounting part is bolted, so no one can However, the present invention has extremely excellent effects, such as enabling easy attachment / detachment.

  The best mode for carrying out the present invention will be described with reference to FIG. FIG. 1 is a drawing for explaining the method of the present invention. In FIG. 1, the reduction guide electromagnetic tooth clutch of the steel piece block rolling apparatus includes an electromagnetic coil unit 1, an electromagnetic attracting body 2, a bearing case 3, a hub 4, a bearing 5, a bearing 6, a spring 7, a spring 8, and a face gear. 9, the face gear 10, the spline gear 11, the spline gear 12, and other ancillary equipment.

  By the way, the method of the present invention in FIG. 1 is a recovery method at the time of coil burnout of the rolling guide electromagnetic tooth clutch of the billet rolling apparatus using a fixed jig. The ring-shaped part 15, the cylindrical part 16, the cutting bolt 17, and the nut 18, which are fixing jigs used in the method of the present invention, are used as the reduction guide electromagnetic tooth clutch in the conventional billet rolling apparatus shown in FIG. The configuration shown in FIG. 1 is additionally provided.

  That is, when the electromagnetic coil of the electromagnetic coil unit 1 is burned out in the reduction guide electromagnetic tooth clutch of the steel slab lump rolling device, the ring-shaped part 15 is attached to the hub 4 on the output shaft 20 side on the inner peripheral side thin portion 15a. It is fixed with bolts 21. On the other hand, the bolt one end portion 17a of the cutting bolt 17 is screwed and fixed to the thick portion 15b on the outer peripheral side of the ring-shaped component 15 fixed to the hub 4 with the bolt 21. The flange portion 16c on one end side in the axial direction of the cylindrical part 16 is sandwiched between the bolt other end portion 17b of the fixed cutting bolt 17 and the two nuts 18 and 18, and the electromagnetic attracting body 2 is placed on the electromagnetic coil unit 1 side. It is fixed so that the position can be adjusted.

  In other words, the cylindrical part 16 fixed by the dimensioning bolt 17 is disposed with a gap around the outer periphery of the bearing case 3. On the other hand, the cylindrical outer peripheral surface 2b on one end side in the axial direction of the electromagnetic attracting body 2 is covered with the thin outer peripheral surface inner surface 16a on the other end side of the cylindrical part 16 opposite to the flange portion 16c on the one end side in the axial direction. Furthermore, the cylindrical portion end surface 2 a on one end side of the electromagnetic attracting body 2 is brought into contact with the thick portion inner end surface 16 b on the other end side of the cylindrical component 16. The electromagnetic attracting body 2 is pressed against the electromagnetic coil unit 1 by this contact. By this pressing, the face gear 9 and the face gear 10 are fixed in mesh with each other against the spring 8, and the driving force of the input shaft 19 can be directly transmitted from the electromagnetic coil unit 1 to the electromagnetic attracting body 2.

  In the present invention, the ring-shaped component 15 is fixed to the hub 4 on the output shaft 20 side by screwing with the bolt 21. The ring-shaped part 16 is connected to the cylindrical part 16 with a cutting bolt 17 and two nuts 18 and 18. Therefore, by adjusting the distance between the thick part 15b on the outer peripheral side of the ring-shaped part 15 and the flange part 16c on the one end side of the cylindrical part 16 with this cutting bolt 17 and the two nuts 18 and 18, By pressing the thick part inner end surface 16b on the other end side of the cylindrical part 16 against the cylindrical part end surface 2a on the one end side of the electromagnetic attracting body 2, the face gear 9 and the face gear 10 are meshed by this pressing, whereby the input shaft 19 Is transmitted to the hub 4 and the output shaft 20 is rotated. As described above, according to the present invention, when the electromagnetic coil is burned out, the emergency recovery can be easily performed by using the ring-shaped component 15, the ring-shaped component 16, the dimensioning bolt 17 and the nut 18.

  On the other hand, the conventional emergency recovery method at the time of electromagnetic coil burning, as shown in FIG. 4, welds the face gear 9 and the face gear 10 directly. If it is welded, the electromagnetic tooth clutch cannot be overhauled. Therefore, not only the replacement of the electromagnetic coil but also the replacement of the face gear 9 and the face gear 10, that is, it is necessary to update almost all parts to new ones. There is. For this reason, the repair cost was enormous.

  On the other hand, in the method according to the present invention in which the jig component shown in FIG. 1 is applied, it is possible to recover in a short time even if there is only one worker, and in the case of overhaul of the electromagnetic tooth clutch. In addition, it was possible to restore the electromagnetic coil unit 1 just by replacing it, and it was possible to significantly reduce new purchase costs and replacement repair costs.

It is a schematic diagram of the restoration method by a jig at the time of the rolling guide electromagnetic tooth scratch electromagnetic coil burnout of the steel piece block rolling apparatus in the present invention. It is the schematic diagram of the clutch connection state of the reduction guide electromagnetic tooth clutch of the conventional steel piece block rolling apparatus. It is the schematic diagram at the time of the clutch disengagement state of an electromagnetic tooth clutch, and electromagnetic coil burning of the conventional steel piece block rolling apparatus. It is a schematic diagram of the emergency recovery method at the time of the conventional steel piece lump pressure reduction guide electromagnetic tooth clutch electromagnetic coil burning.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Electromagnetic coil unit 2 Electromagnetic attracting body 2a End surface of cylindrical part 2b on one end side Outer peripheral surface of cylindrical part on one end side 3 Bearing case 4 Hub 5 Bearing 6 Bearing 7 Spring 8 Spring 9 Face gear 10 Face gear 11 Spline gear 12 Spline gear 13 Arrow 14 Welded portion 15 Ring-shaped component 15a Thin portion on inner circumference 15b Thick portion on outer periphery side 16 Cylindrical component 16a Thin inner surface on the other end side 16b Thick portion inner end surface on the other end side 16c Flange on one end side 17 Dimensional bolt 17a Bolt one end 17b Bolt other end 18 Nut 19 Input shaft 20 Output shaft 21 Bolt

Claims (1)

  In an electromagnetic tooth clutch of a rolling guide for a steel piece block rolling apparatus, when an electromagnetic coil burns out, a ring-shaped part 15 is fixed to the hub 4 of the output shaft 20 with a thin portion 15a on the inner peripheral side, and fixed to the hub 4 A bolt one end 17a of the cutting bolt 17 is fixed to the thick portion 15b on the outer peripheral side of the ring-shaped part 15 by screwing, and two nuts 18 and 18 are fixed to the bolt other end 17b of the cutting bolt 17. The flange portion 16c on one end side in the axial direction of the cylindrical part 16 is fixed by being pinched by the position of the cylindrical part 16, and a gap is provided between the inner periphery of the cylindrical part 16 and the outer periphery of the bearing case 3 to form a cylindrical shape. A thin outer peripheral portion inner surface 16 a formed on the other end side in the axial direction of the component 16 is covered with a cylindrical portion outer peripheral surface 2 b on one end side in the axial direction of the electromagnetic attracting body 2 and a cylindrical portion on one end side of the electromagnetic attracting body 2. The end face 2 a is the thick part inner end face 1 on the other end side of the cylindrical part 16. b is pressed against the electromagnetic coil unit 1 against the spring 8, and the face gear 9 of the electromagnetic coil unit 1 is engaged with and engaged with the face gear 10 of the electromagnetic suction unit 2 by this pressing. A method of fixing a rolling guide electromagnetic tooth clutch of a billet rolling apparatus that enables transmission of torque of an input shaft 19 to an output shaft 20.

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