KR19990028567U - Backup roll journal mapping device - Google Patents

Abstract

The present invention has any one of a base having a rectangular opening, a roll base fitted into the rectangular opening of the base, two horizontal support rolls for supporting a backup roll installed on the roll base, and the support roll. A driving device for driving a horizontal drive, a hydraulic jack for supporting the roll base at the opening of the base, a hydraulic pump, and a grindstone for fixing the grindstone that faces the journal portion of the backup roll along the inclined surface of the roll journal portion. A guide bar, a screw bar, and a driving device for driving the screw bar, which are installed in parallel with the inclined surface of the roll journal part through the grindstone stand between the two supports installed on the base and the two supports; Limit switch that forms a contact when the limit position of horizontal motion is reached. When this is the grinding wheel for horizontal reciprocation mechanism and the back-up roll was installed discloses a journal portion mapping device comprising a backup roll including grinding oil supply device for supplying grinding oil cyclically between the backup roll and the grinding wheel.

Description

Backup roll journal mapping device

The present invention relates to a backup roll journal mapping apparatus, and more particularly, to a backup roll mapping apparatus that facilitates finishing of a backup roll.

Back up rolls are usually rotating to support the work reaction force of the rolling work roll. Large rolls are used, especially those used in hot rolling processes up to 1600 mm in diameter. The handling is therefore done using large cranes and usually metal bearings are used for their support.

FIG. 1 is a half sectional view showing that the backup roll 10 is assembled to the choke 11, FIG. 1 (A) shows the assembled state, and FIG. 1 (B) shows the backup roll 10 from the choke 11. The disassembled state is shown. Lubricating oil enters between the sleeve bearing 11-1, which is assembled to the backup roll journal section 10-1 and rotates together, and the shell bearing 11-2, which is fixed to the choke 11 and supports the rotational force. To help rotate the roll 10.

Such a backup roll 10 is disassembled from the choke 11 after 1 to 3 weeks of working, and is carbonized on the inner surface of the sleeve bearing 11-1 and the journal portion 10-1 of the backup roll. The layer is removed using grindstone or sandpaper and then reassembled. In the removal work of such a carbonized layer, the worker has done this by hand manually conventionally. At this time, since the carbide layer inside the choke 11 is thinly formed, the worker can easily remove the sand by using sandpaper or the like to enter the choke, but the carbonized layer formed on the roll journal 10-1 has a range. Extensive and deep in order to remove this, the operator had to move up and down the roll journal portion 10-1 alternately had to inconvenience. In this case, it is also difficult to obtain a uniform mapping because the upper side which is generally easy to finish is mapped. However, in order to finish the roll 10, it is impossible to carry out the other work because the crane must be continuously used to finish the rolling. Also, the general polishing machine cannot be inclined, so the inclined polishing machine must be installed separately. In terms of efficiency, that is, the use of the work is extremely low compared to the installation range or price, which is impossible. Therefore, in the related art, there has been inconvenience of having to carry out the finishing work of the roll journal unit 10-1 continuously by a worker's manual work.

The present invention is to solve the problem of the above-mentioned backup roll during the mapping, therefore, an object of the present invention is to provide a backup roll journal mapping apparatus that can easily map the journal portion of the backup roll.

An object of this invention is to provide a base having a rectangular opening, a roll base fitted into the rectangular opening of the base, two horizontal support rolls for supporting a backup roll installed on the roll base, and the support roll. A reciprocating horizontally reciprocating along the inclined surface of the roll journal portion a drive device for driving any one of the above, a hydraulic jack for supporting the roll base at the opening of the base, a hydraulic pump, and a grindstone for fixing a grindstone facing the journal portion of the backup roll. A guide bar, a screw bar, and a driving device for driving the screw bar, which are installed to be parallel to the inclined surface of the roll journal part through the grindstone stand between the two supports installed on the base and the two supports for movement; Limits that make contact when reaching the limit position of both horizontal movements of the grindstone Journal unit finishing device of a backup roll including a grindstone horizontal reciprocating mechanism composed of a switch, and a grinding oil supply device for circulating grinding oil between the backup roll and the grindstone when the backup roll is installed. Is achieved.

1 (A) is a half sectional view showing the backup roll assembled to the choke;

1 (B) is a half sectional view showing a state in which the backup roll is disassembled from the choke;

2 is a perspective view of a mapping apparatus of a backup roll journal unit according to the present invention;

(A) is sectional drawing along the A-A line | wire of FIG.

(B) is sectional drawing along the B-B line | wire of FIG.

4 is an exploded perspective view of the mapping apparatus of the backup roll journal unit according to the present invention; And

Figure 5 is a perspective view showing that the backup roll is installed in the backup roll journal mapping apparatus according to the present invention.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

2 is an assembled perspective view of the backup roll journal finishing apparatus according to the present invention, and it is seen that two support rolls 30 and 31 supporting the back up roll 10 are provided on the base 21. The two support rolls 30 and 31 are installed on the support roll base 22 which is installed as superimposed on a rectangular opening (see FIG. 3) formed on the base 21, and the support roll base 22. 3 is a structure that can flow up and down according to the diameter of the backup roll, as will be described later with reference to FIG. The support roll 30 receives the power from the support roll drive motor 33 through the reducer 32 as a drive roll, and achieves rotation thereof.

The grinding wheel horizontal reciprocating mechanism which horizontally reciprocates the grinding wheel 25 which fixes the grinding wheel 45 for the thought of a backup roll in the position corresponding to the journal part of the backup roll of one side of the said support rolls 30 and 31. Is installed. That is, two guide rods 28 are assembled on the two supports 23 and 24 through the grindstone 25, and the screw bar 27 receives power from the grindstone reciprocating drive motor 36. Is assembled to the support (23, 24) while penetrating while making screw connection with the grindstone (25) is shown. At this time, the screw bar 27 and the guide rod 28 are installed to be parallel to the inclination of the journal portion of the backup roll so that the grindstone 25 can move horizontally with the journal portion of the backup roll. Reference numeral 43 denotes a pump for supplying grinding oil, which is ejected from the nozzle 35 through the hose 44 by the grinding pump so that the grinding is smooth in the friction surface of the grindstone and the journal part during the finishing operation.

4 is an exploded perspective view of the finishing apparatus of the backup roll according to the present invention. The base 21 has a grinding tank 21-1, and a pump base 21-2 and a flange 21-3 are installed at one side of the tank 21-1. The circulation pump 43 is connected to the flange 21-3 while being fixedly installed on the pump base 21-2 by using a screw 52. Therefore, the grinding oil may be circulated by the circulation pump 43.

The base 21 has a rectangular opening 210 therein, in which the roll base 22 is inserted. In addition, the hydraulic opening 42 is installed in the rectangular opening 210 so that the roll base 22 can move up and down. In this embodiment, four hydraulic jacks 42 are installed. At this time, so that the hydraulic jack 42 can be raised and lowered at the same time, the hydraulic oil injection line (41-1) of the hydraulic jack 42 is connected to the same line is installed with the pump 41. The roll base 22 has an inner surface of the lower portion thereof open to allow the hydraulic jack 42 to be installed, and a bolt hole is machined into a slope to install a liner 40 through the bolt 52. Therefore, when the roll base 22 moves up and down in the rectangular opening 210 of the base, friction and flow can be minimized. Four square blocks 22-1 are installed at the upper part of the support roll base 22, bearings 50 are installed at the upper part of each block 22-1, and the support rolls 30 and 31 are in the longitudinal direction. It is supported by the bearing 50 between the blocks 22-1 placed in parallel. The support roll drive motor 33 is installed and the power of the drive motor 33 is transmitted to the support roll 30 connected with the reducer via the reducer 32.

As shown, the center portion of the grinding tank 21-1 is cut long to thereby collect the grinding oil into the grinding tank 21-1. One side of the cutting portion of the grinding tank is provided with a screw bar 27 and two guide rods 28 on two supports 23 and 24. As described above, these bars and rods 27 and 28 are roll journals. It is installed parallel to the inclination angle of the grindstone bar 25 to be able to move in a horizontal direction with the roll journal. The screw bar 27 and the rod 28 are assembled to the supports 23 and 24 through the grindstone 25 respectively. Here, two rods 28 for preventing shaking of the grindstone 25 are assembled to the supports 23 and 24 by assembling the bush 29 to prevent flow while minimizing friction with the grindstone 25. In addition, in the case of the screw bar 27, the screw bush 55 passes through the grindstone 25 and is assembled to the supports 23 and 24 by the side attachment bearing 38. See 3 (A))

For the horizontal reciprocation of the grindstone 25, the screw bar 27 is connected via a key 51 to a reducer 37 mounted on the support 23 and the reducer 37 is a reciprocating motor 36. ) Therefore, the direction of rotation of the screw bar is changed according to the rotation direction of the reciprocating motor 36, and as a result, the grindstone can be moved in both directions. In addition, the support 39 is provided with a limit 39 so that the grindstone can be returned from a predetermined position.

The grindstone 45 is installed on the grindstone 25. For this purpose, the upper part of the grindstone is formed into an intaglio shape, and a sliding block 26 having a shape corresponding to the intaglio shape is inserted therein. The front surface of the sliding block 26 is processed a bolt hole to which the adjustment bolt 47 can be coupled, and the rear side of the sliding block 26 is processed a square groove in which the fixed block 34 can be installed (not shown). The fixing block 34 fixes the grindstone 45. The fixed block 34 is inserted into the groove of the rear surface of the sliding block 26, and as shown in FIG. 3 (B), the spring 53 is first installed in the groove of the rear surface, and then the fixed block ( 34) is installed. In addition, openings are formed at both sides of the sliding block 26, wherein the socket bolt 46 is inserted into the rear groove of the sliding block, and then penetrates through the side of the fixed block. Fixed in the rear groove of the sliding block 26 to limit the distance of the forward and backward movement of the fixed block 34, which is buffered by the spring 53 as the head of the socket 46 is locked. . In addition, the sliding block 26 is attached to the long round bar (26-1) when the limit of the horizontal movement in the one direction of the grindstone 25 hits the one limit 39 installed in the support (23, 24) To be able. The grindstone 45 is installed in the empty space inside the fixing block using the set screw 54 as shown, wherein the head of the neck screw is preferably not exposed on the upper surface of the fixing block. The adjusting nut 47 is coupled to the bolt hole of the sliding block 34 via the jaws of two opposing square blocks 48, 49 having jaws. Therefore, the appropriate reaction force between the grindstone and the roll journal can be adjusted by tightening the adjusting nut.

In addition, the grinding oil pump 43 is connected to the nozzle 35 through the hose 44. In this embodiment, the nozzle is provided in the grindstone 25. Therefore, the grinding oil is injected from the grinding tank 21-1 by the pump 43 at the nozzle 35, which lubricates the friction surface between the roll journal and the grindstone and again in the center of the grinding tank. It is circulated through the incision into the grinding tank.

FIG. 5 is a view showing that a backup roll is installed in a backup roll journal mapping apparatus according to the present invention to perform a mapping operation of the journal portion. That is, first, the back up roll 10 to which the journal part 10-1 will be mapped is seated between two support rolls 30 and 31 using a crane. When the next drive motor 33 is activated, the roll 30 is rotated and thus the backup roll 10 is also rotated. Thereafter, the sliding block 34 is advanced by using the adjusting nut 47 so that the grindstone gradually contacts the journal 10-1, and the grindstone 45 is buffered by the spring 53. Next, when the reciprocating motor 36 is driven, the grindstone 25 moves along the inclined surface along the screw bar 27 and the guide rod 28 and maps the journal. Meanwhile, the grinding pump 43 is driven to supply grinding oil between the grindstone 45 and the journal 10-1. If there is a difference in the diameter of the roll 10, the hydraulic jack 42 in the lower portion of the roll base is adjusted so that the grinding position is always possible at the center of the roll journal 10-1.

As such, the present invention is a practical design that enables safe and easy mapping of the backup work of the backup roll journal, which was dependent on the existing manual work, with a simple switch operation.

Claims (3)

A base having a rectangular opening, a roll base fitted into the rectangular opening of the base, two horizontal support rolls for supporting a backup roll provided on the roll base, and one of the support rolls A base for reciprocating horizontally along the inclined surface of the roll journal part a drive device, a hydraulic jack for supporting the roll base at the opening of the base, a hydraulic pump, and a grindstone for fixing a grindstone facing the journal part of the backup roll; A guide bar and a screw bar installed in parallel with the inclined surface of the roll journal part between the two supports installed between the two supports and the two supports and the driving device for driving the screw bar, and both horizontal movements of the grindstone stand. A grindstone consisting of a limit switch which forms a contact when the limit position is reached And a large horizontal reciprocating mechanism and a grinding oil supply device for circulating grinding oil between the backup roll and the grindstone when the backup roll is installed. 2. The apparatus of claim 1, further comprising a spring in contact with the grindstone in the grindstone, the spring cushioning between the grindstone and the backup roll journal. The back-up roll according to claim 1 or 2, wherein the grinding oil supply device comprises a grinding tank having a cutout at an upper portion installed inside the base portion, a grinding oil circulation pump connected to the grinding tank, and a nozzle connected to the hose. Journal unit mapping device.