KR20030042702A - An apparatus for changing inner ring of working roll - Google Patents

Abstract

PURPOSE: An apparatus for changing inner ring of a work roll is provided to uniformly heat an inner ring of the work roll, prevent shift of inner ring during the heating operation, and allow the roll neck part and the inner ring to be easily unclamped and clamped so as to prevent an accident due to decrease of the operator's maintenance load. CONSTITUTION: The apparatus comprises an inner ring-rotating part(20) which is provided with a rotary disc(27) and a rotary motor(29) on which the work roll is mounted so as to horizontally rotate at an angle of 180 degrees, and a rotational motor(18) for rotating the work roll; an inner ring-heating part(40) mounted on a transfer car(30) which moves at a side of the inner ring-rotating part(20) and having a heater for heating inside the inner ring; and an inner ring mounting part(80) having a ring-mounting bar(85) which reciprocally moves in a direction to the inner ring-heating part(40), a motor for reciprocally driving the ring-mounting bar(85), and another motor for slantingly rotating the ring-mounting bar(85) so as to carry the inner ring(300) in the heater(51) and perform clamping, unclamping, and changing the inner ring.

Description

Inner ring replacement device for rolling rolls {AN APPARATUS FOR CHANGING INNER RING OF WORKING ROLL}

The present invention relates to a disassembly and assembly device of the inner ring (Inner Ring) to be assembled to the neck portion of the rolling roll, more specifically to heat the inner ring of the rolling roll uniformly, and to prevent the sliding phenomenon of the inner ring during the heating operation In order to prevent this, a rolling prevention guide roll is installed on the inside of the heating heater, and all the processes are automatically performed to facilitate the removal and installation of the roll neck portion and the inner ring to prevent the safety accident of the operator and the maintenance load. The present invention relates to an inner ring replacement device of a rolling roll to reduce equipment damage in advance.

In general, when foreign matters are mixed in the roll neck part and oil mist accumulates in the rolling work, a fatigue layer is accumulated on the entire inner ring of the roll neck part due to deterioration of the performance of the rolling roll and foreign matters mixed in the oil. Since the bearing is not smoothly rotated with the ring, the bearing is broken, and thus there is a problem of enormous damage to the rolling operation.

In order to prevent this, it is necessary to replace the inner ring in which the fatigue layer is accumulated in a timely manner. Referring to the conventional working method through the inner ring replacement work situation diagram of the conventional rolling roll shown in FIG.

In the conventional method of replacing the inner ring 300, the operator artificially heats the heat on the front surface of the inner ring 300 by using a heating torch 312 in the rolling roll 310 to be replaced to expand the inner diameter of the inner ring 300. Then, the rope rope is removed by hooking with a crane rope 315, the new inner ring 300 is heated with a heating torch 312 at the bottom of the field, and then the rope is hooked with a rope 315 to roll neck ( The inner ring 300 is inserted into 310a.

In this case, when heat is not uniformly applied to the entire surface of the inner ring 300, difficulty of work occurs during disassembly and assembly with the rolling roll 310, and the heated inner ring 300 is exposed and decomposed. In assembling, workers may be exposed to the risk of burns and safety accidents.

In addition, when the inner ring 300 mounted on both sides of the rolling roll 310 is to be replaced, that is, when a continuous operation is performed on both sides of the rolling roll 310, a rope 103 is used to cut the rope. If the hook is rotated to the left or right to work, there is no continuity of work, which causes a decrease in work efficiency. In addition, due to the difficulty of replacing the inner ring 300, the work avoiding phenomenon of the worker occurs to prevent the replacement of the inner ring 300 in a timely manner, there was a problem such as a bearing accident is frequently unable to operate the facility. .

The present invention is to solve the conventional problems as described above, the object is to heat the heat uniformly to the inner ring of the rolling roll, to prevent the sliding phenomenon of the inner ring during the heating operation, the roll neck and the inner ring It is to provide an inner ring replacement device that is improved to prevent the operator's safety accidents by easily carrying out work and installation work and to reduce the maintenance load to prevent equipment accidents in advance.

Figure a), b) of Figure 1 is an inner ring replacement operation situation according to the prior art;

2 is a general installation side view showing the overall configuration of the inner ring replacement device of the rolling roll according to the present invention;

3 is an exploded perspective view of a rotating part provided in the inner ring replacement device of the rolling roll according to the present invention;

4 is an exploded perspective view of a heating unit provided in the inner ring replacement device of the rolling roll according to the present invention;

5 is a structural diagram of a rotary roll provided in the heating portion of the inner ring replacement device of the rolling roll according to the present invention,

a) is an exploded perspective view, b) is an operating state diagram, c) is an A-A cross-sectional view;

6 is an exploded perspective view of the inner ring rotating unit provided in the inner ring replacement device of the rolling roll according to the present invention;

7 is an explanatory view showing an operating state of the inner ring replacement device of the rolling roll according to the present invention.

<Description of the symbols for the main parts of the drawings>

10 ..... Inner Ring Rotator 30 ..... Bogie

40 ..... Inner Heating 51 ..... Heating Heater

55 ..... Rolling Roll 78 ..... Guide Roll

80 ..... inner ring mount 85 ..... ring mount

92 ..... rotary motor 120 .... ring seat

300 .... Rolling roll 310 .... Inner Ring

In order to achieve the above object, the present invention, in the disassembly and assembly device of the inner ring (Inner Ring) to be assembled to the neck portion of the rolling roll, the rolling roll is mounted on the upper side to rotate 180 degrees in the horizontal direction And an inner ring rotating part including a rotating motor and a rotating motor rotating the rolling roll; An inner ring heating unit mounted on a movable trolley on one side of the inner ring rotating unit and including a heating heater for positioning and heating the inner ring inward; and a ring mount retractable with respect to the inner ring heating unit And an inner ring mounting portion including a motor for moving backwards, and an inner ring mounting portion configured to insert or remove an inner ring fitted to the ring mounting portion into a heating heater, and to replace the inner ring mounting portion with a motor for tilting the ring mounting portion. By providing the inner ring replacement device of the rolling roll.

Hereinafter, the present invention will be described in more detail with reference to the drawings.

The inner ring replacement device 1 of the rolling roll according to the present invention includes a roll rotating part 10 which rotates both sides of the rolling roll 310 mounted on the upper side, that is, the work side and the drive side in place. Inner ring mounting portion 80 having an inner ring heating portion 40 mounted on the trolley 30 which is movable forward and backward from one side of the rotating portion 10 and processing outgoing work of the inner ring 300. Equipped with.

Roll rotating part 10 provided in the inner ring replacement device (1) of the rolling roll according to the present invention, as shown in detail in Figure 3, two rollers 12 for seating the inner ring replacement rolling roll 310 on top ) Is rotatably seated by the block bearing 16 of the support plate 14, and is configured to rotate the rollers 12 by connecting a motor 18 to a rotation shaft of the roller 12 on one side.

In addition, the rack gear 20 extends downward in the center of the lower surface of the support plate 14, and the guide rods 22 extend downward in all directions, and the rack gear 20 and the guide rods ( 22 are fitted into the holes 25a of the support plate 25 formed on the lower side of the support plate 14, respectively.

And, the support plate 25 has a cross-sectional structure of the] type, the lower end of both sides is mounted to the upper portion of the rotating disk 27 with a bolt 27a, etc., one side is geared to the rack gear 20 The lifting and lowering motor 32 for rotating the pinion gear 29 to be engaged is mounted. Therefore, the operation of the lifting motor 32 raises and lowers the support plate 14 with respect to the support plate 25 by raising and lowering the rack gear 20 through the pinion gear 29.

In addition, the rotary disk 27 on which the support plate 25 is mounted is disposed in the center of the circular base plate 37 and the bottom plate 37 fixedly mounted to the recessed portion 35a of the bottom 35 and the bottom plate 37. A rotary motor 39 for rotationally driving the rotary disk 27 inserted into the rotary disk 27. The rotary disk 27 has an inner surface of the sleeve portion 27a extending downwardly thereof. The pinion gear 39a of the rotary motor 39 is formed by contacting a plurality of rollers 37a formed on the outer circumferential surface so as to be rotatable with respect to the base plate 37, and forming an arc-shaped internal gear 27b at the center thereof. Tooth is combined.

Therefore, the forward and reverse rotation of the rotary motor 39 is the pinion gear (39a) by rotating the rotation disk 27 in the forward and reverse directions, the support plate 25 and the support plate fixed to the upper portion of the rotation disk 27 (14) is rotated, and consequently the rolling roll 310 mounted on the roller 12 of the support plate 14 is rotated so that the work side and the drive side of the rolling roll 310 will be described later. It can be rotated 180 degrees to face the heating portion 40 side.

And the present invention is provided with an inner heating portion 40, as shown in Figure 4, which is mounted on the trolley 30 that is movable back and forth on one side of the roll rotating portion 10, which is cylindrical And a rectangular frame 53 having a built-in electric heating heater 51 therein, and both sides of the frame 53 are provided with a doorway 53a through which the inner ring 300 can enter and exit, and as the doorway 53a. Four rotary rolls 55, which can be mounted therebetween, can be mounted to allow height adjustment.

First, the rectangular frame 53 is vertically coupled to the guide grooves 31a of the support 31 extending from the trolley 30 to the vertical guide shafts 53b extending from the trolley 30 to the trolley 30. ) And the cylindrical heating heaters 51 mounted in the inner space thereof are supplied with power from the outside to generate electrical heat, and the four rotary rolls 55 inside the heating heater 51. While they are arranged in the transverse direction, the lifting mechanism 60 for raising and lowering the rotary rolls 55 is mounted on both entrances and exit sides of the rectangular frame 53.

The elevating mechanism 60 includes a screw shaft 62 and a guide rod 64 respectively rotatably fitted to the flanges 54 protruding from both upper and lower edges of the rectangular frame 53, and these screw shafts 62 ) And the guide rods 64 are rotatably mounted on the flange 54 in pairs on both sides of the rectangular frame 53, and on the screw shaft 62 in the upper flange 54. ) Are mounted to rotate the screw shaft 62 forward and reverse, while the lifting shafts 68 are mounted on the screw shaft 62 and the guide rod 22, respectively.

Both ends of the rotary roll 55 are connected to the elevating block 68, respectively, and the rotary roll through the elevating block 68, the screw shaft 62, the guide rod 64, and the rotary motor 66. 55 is configured to be made up and down in the rectangular frame 53. To this end, the screw shaft 62 has different spirals formed at the upper and lower portions thereof, that is, the right screw and the left screw are formed symmetrically, so that the rotary motor 66 rotates the screw shaft 62. The upper and lower lifting blocks 68 screwed to the screw shaft 62 are moved to move closer to or farther from each other, and accordingly, a plurality of rotary rolls 55 mounted on the lifting blocks 68 respectively. ) Are configured to widen or narrow the space between the top and bottom.

In addition, the rotary rolls 55 are rotatable by the rotary motor 70 mounted on the elevating block 68 on one side, and the interval between the upper and lower sides is adjusted as described above to form the inner ring 300 therein. In the case of mounting, the inner ring 300 has a structure as shown in FIG. 5 in order to prevent displacement in the transverse direction in the process of mounting the inner ring 300 to the neck portion 310a of the rolling roll 310.

That is, each of the rotary rolls 55 has a hollow cylindrical body 72 structure that can be divided into two, and is coupled to both sides of the body 72 by flanges 74 and bolts 74a. The body 72 has a plurality of guide rolls 78 which are elastically supported in the radial direction of the body 72 by a spring 76, each of which guide rollers 78 has a bearing roller 78a at its tip. Equipped with. That is, the lower portion of the guide roll 78 is formed with a screw portion (79a) is fixed by a nut (79b) in the inner surface of the body 72, the guide roll 78 of the body 72 is inserted Springs 76 are built in the recesses 72a to allow the guide rolls 78 to protrude outward from the outer circumferential surface of the body 72. These guide rolls 78 are to be inserted into the interior of the body 72 by pressing the spring 76, if the load is applied from the outside, the unloaded portion is projected to the outside of the body 72 as it is It is to maintain the state.

Such guide rolls 78 are formed over the entire length in the longitudinal direction of the body 72 of the rotary roll 55, at the same time formed a plurality of lines in the circumferential direction. Therefore, when the inner ring 300 is seated on the rotary roll 55, the load of the inner ring 300 is pressed into the body 72 by pressing the guide rolls 78, and the portion that is not pressed to protrude as it is The inner ring 300 will not be moved in the longitudinal direction of the rotary roll (55).

In addition, the trolley 30 has an inner ring mounting portion 80 for attaching or removing the inner ring 300 to the inner ring heating portion 40 in proximity to the inner ring heating portion 40.

As shown in FIG. 6, the inner ring mounting unit 80 includes a ring mounting unit 85 that moves on the trolley 30 on one side of the heating unit 40, and the ring mounting unit 85. ) Is the lower end is screwed to the screw shaft 89 formed along the long guide groove 87 in the center of the trolley 30, and the forward and reverse motor 92 provided at one end of the screw shaft 89 It is operated by. That is, when the forward and backward motors 92 operate in the forward and reverse directions, this causes the screw shaft 89 to rotate forward and backward so that the ring mount 85 screwed thereto is close to the heating part 40. The ring mount 85 has a height-adjustable structure, and a rotary sleeve 95 that is insertable into the inner ring 300 is mounted at the front end thereof. In addition, the vertical portion of the ring mount 85 is folded so that the rotary sleeve 95 can be moved up and down, the lifting cylinder 97 is provided on one side of the upper portion of the mount 85 It is configured to raise and lower the member 99a with respect to the lower member 99b.

Therefore, the upper member 99a is moved up and down relative to the lower member 99b by the operation of the elevating cylinder 97 so that the height can be adjusted.

In addition, the ring mount 85 is mounted so as to be capable of tilting to both sides of the trolley 30, which forms a gear 102 in the lower end of the ring mount 85, the gear ( The pinion gear 105 coupled to the 102 is mounted on the lower side of the trolley 30, and the rotating motor 107 for rotating the pinion gear 105 is mounted on one side of the trolley 30.

Therefore, when the ring mount 85 is advanced toward the heating portion 40 and closes, the gear 102 and the pinion gear 105 are separated from each other, but the ring mount 85 is the heating portion 40. When the distance from the), the pinion gear 105 is engaged with the gear 102, the ring mount 85 and the screw shaft 89 coupled thereto by the operation of the rotation motor 107 is rotated and the bogie The inclined rotation is possible to the ring seating stand 110 provided in the both sides of (30).

On the other hand, the wheel 112 is mounted on the lower surface of the trolley 30, respectively, and the front and rear cylinders 115 for bringing the trolley 30 closer to the inner ring rotation part 10 are provided.

Reference numeral 120 is a rail in which the ring seat 110 is installed, 122 is a ring seat 110 moving cylinder.

Inner ring replacement device (1) of the rolling roll according to the present invention configured as described above, as shown in Figure 7, the inner ring 300 to replace the rolling roll 310 to replace the inner ring 300 rotation part It rests on the roller 12 of (10).

The rolling roll 310 seated as described above is gradually rotated by the rotation of the roller 12 by the rotary motor 18, and the height of the rolling roll 310 is adjusted by the lifting motor 32 to adjust the inner heating portion. It is fitted to the center of the heating heater 51 of the 40, the rotary rolls 55 of the inner heating portion 40 is maintained a wide interval between the upper and lower.

In this state, when the front and rear cylinders 115 for the movement of the bogie are operated, the bogie 30 moves forward so that the inner ring 300 of the rolling roll 310 rotates in the heating heater 51. When positioned in this way, the rotary rolls 55 are positioned such that the inner ring 300 is positioned between the rotary rolls 55 by the operation of the motors 66 for raising and lowering the rotary rolls 55. When the gap is narrowed and the inner ring 300 is caught between the rotary rolls 55, the inner ring 300 is heated through the heating heater 51.

In this case, the inner ring 300 is rotated in the rotary roll 55 by the rolling roll 310 is rotated, which is the guide rolls 78 provided on the rotary roll 55 bearing roller at its tip Since it is provided with (78a), to ensure a smooth rotation operation of the rotary roll (55). After the inner ring 300 is evenly heated in this manner, the inner diameter of the inner ring 300 is expanded so that the inner ring 300 is easily drawn out from the neck of the rolling roll 310. When the reverse, the inner ring 300 that is rotating between the rotary rolls 55 is caught by the guide rolls 78 of the rotary rolls 55 to be pulled out of the neck portion of the rolling rolls 310, the rolling roll 310 Are separated from).

In this state, the ring mount 85 is advanced to insert the rotary sleeve 95 into the inner ring 300, and operate the elevating motors 66 so that the space between the rotary rolls 55 opens. When the inner ring 300 is fitted on the rotary sleeve 95 of the ring mount 85 and the ring mount 85 is retracted, the inner ring (as shown in FIG. 300 is withdrawn from the heating heater 51.

In this state, the rotating motor 92 is operated to place the inner ring 300 on the seating plate 110 positioned on the side of the trolley 30, and the ring mounting unit 85 rotates to the opposite side. And insert the new inner ring 300 onto the rotary sleeve 95, then raise the ring mount 85 in the reverse order to the inner side of the heating heater 51, as shown in FIG. 7D). It is inserted into, fixed as a rotary roll 55, and then heated to be inserted into the neck portion of the rolling roll (310).

Accordingly, when the inner ring 300 may be replaced from the neck portion of the rolling roll 310, and the inner ring 300 of the opposite neck portion is to be replaced, the rotating motor of the inner ring rotating portion 10 may be replaced. (39) is operated to rotate the rotating disk 27, so that both sides of the rolling roll 310, that is, the work side and the drive side is turned 180 degrees to face the heating heater 51 side, thereby rotating The inner ring 300 can be replaced in turn.

Therefore, according to the present invention, since the rolling roll 310 is rotated by the rotating part 10 without using a crane when returning to the work and drive side, efficiency can be improved by securing safety, and the inner inside the heating heater 51 As the ring 300 rotates, heat is evenly transferred to the front of the inner ring 300, so that the inner ring 300 can be easily disassembled and assembled, and the heated inner ring 300 is not exposed to the worker, thereby preventing a worker's burn hazard. have.

And, even if the inner ring 300 is rotated by installing the anti-rolling guide rolls 78, even if the inner ring 300 is not constant or different specifications, the operation is possible, the inner ring of the rolling roll (310) 300) The replacement work can be performed automatically, so that the work safety and the work efficiency can be improved.

Claims (5)

In the disassembly and assembly apparatus of the inner ring (Inner Ring) mounted on the roll neck of the rolling roll 310, the rolling roll 310 is mounted on the upper side so that the rotation disc 27 can be rotated 180 degrees in the horizontal direction And an inner ring rotating part 10 having a rotating motor 39 and having a rotating motor 18 for rotating the rolling roll 310; An inner heating part 40 mounted on a trolley 30 which is movable on one side of the inner ring rotating part 10 and having a heating heater 51 mounted therein to heat the inner ring 300; A ring mount 85 that can move back and forth with respect to the inner ring heating portion 40, and a motor 92 that moves forward and backward thereof, and a motor 107 that tilts and rotates the ring mount 85. Inner ring replacement unit 80 for inserting or removing the inner ring 300 fitted to the ring mount 85 into the heating heater 51, and replace the inner ring mounting portion 80; . According to claim 1, The roll rotating portion 10 is the rack gear 20 is extended downward in the center of the lower surface of the support plate 14, the guide rods 22 extend in all directions, the rack size The fish 20 and the guide rods 22 are respectively fitted in the holes 25a of the support plate 25 formed at the lower side of the support plate 14, and the support plate 25 has lower ends of both sides of the rotation disc 27. Mounted on the upper part of the upper part of the upper part), and a lifting motor 32 for rotating the pinion gear 29 geared to the rack gear 20 is mounted on one side thereof. The rotary disk 27 on which the support plate 25 is mounted is disposed in the center of the circular base plate 37 and the bottom plate 37 fixedly mounted to the recess 35a of the bottom 35 to the bottom plate 37. A rotary motor 39 is provided for rotationally driving the fitted rotary disk 27, and the rotary disk 27 has an inner surface of the sleeve portion 27a extending downward, and is formed on the outer circumferential surface of the circular base plate 37. A plurality of rollers (37a) in contact with the base plate (37) rotatably mounted, the center of the circular arc internal gear (27b) to form a gear coupling to the pinion gear (39a) of the rotary motor 39 By rotating the forward and reverse of the rotary motor 39, the rolling roll inner ring replacement device, characterized in that it can rotate 180 degrees so that the end of the rolling roll toward the heating portion 40 side. According to claim 1, wherein the inner heating portion 40 is mounted on the trolley 30 that is movable forward and backward on one side of the roll rotating portion 10, which is a cylindrical electric heating heater 51 is built-in A quadrangular frame (53), inside which four rotary rolls (55) are mounted to enable vertical height adjustment, and an elevating mechanism (60) for elevating the rotary rolls (55); The elevating mechanism 60 includes a screw shaft 62 and a guide rod 64 respectively rotatably fitted to the flanges 54 protruding from both upper and lower edges of the rectangular frame 53, and these screw shafts 62 ) And the guide rods 64 are rotatably mounted on the flange 54 in pairs on both sides of the rectangular frame 53, and on the screw shaft 62 in the upper flange 54. ) Are mounted to rotate the screw shaft 62 forward and reverse, while the lifting shafts 68 are mounted on the screw shaft 62 and the guide rod 22, respectively. Inner ring replacement device of the rolling roll, characterized in that the rotating roll (55) through the motor (66) is configured to move up and down in the square frame (53). According to claim 3, The rotary rolls 55 has a hollow cylindrical body 72 structure that can be divided into two, coupled to both sides of the body 72 by the flanges 74 and the bolts (74a) The body 72 is provided with a plurality of guide rolls 78 which are elastically supported in the radial direction of the body 72 by a spring 76, each of the guide rolls 78 bearing roller at its tip 78a; The guide rolls 78 are formed over the entire length in the longitudinal direction of the body 72 of the rotary roll 55, at the same time formed in a plurality of lines in the circumferential direction on the rotary roll 55 When the inner ring 300 is seated, the load of the inner ring 300 is pressed into the body 72 by pressing the guide rolls 78, and the inner ring 300 rotates by rotating the unrolled portion as it is. Inner ring replacement device for a rolling roll, characterized in that is fixed so as not to move in the longitudinal direction. According to claim 1, wherein the inner ring mounting portion 80 is the ring mount 85 is the lower end screwed to the screw shaft 89 formed along the long guide groove 87 in the center of the trolley 30 , And is operated by the forward and backward motors 92 provided at one end of the screw shaft 89, the vertical portion of the ring mount 85 is made of a folding type, the lifting cylinder 97 on one side is It is configured to raise and lower the upper member (99a) of the mounting base (85) with respect to the lower member (99b); The ring mount 85 forms a gear 102 at the lower end thereof, mounts the pinion gear 105 coupled to the gear 102 at the lower side of the trolley 30, and the pinion gear ( A rotating motor 107 for rotating 105 is mounted on one side of the trolley 30 so that the rotating motor 107 can be inclinedly rotated toward the ring seat 110; The wheel 112 is mounted on the lower surface of the trolley 30, respectively, and the front and rear cylinders 115 for moving the trolley 30 toward the inner rotating part 10 are provided. Inner Ring Replacement Device.