KR102329510B1 - Apparatus for replacing ring of roll - Google Patents

Abstract

The present invention relates to an apparatus for replacing a ring of a roll, which can facilitate disassembly and assembly of a ring installed on a neck part of a roll so as to achieve recycling of discarded rolls. The apparatus for replacing a ring of a roll includes: a roll rotating unit supporting a roll to be able to rotate; and a ring heating unit that is installed on a bogie movable on one side of the roll rotating unit and is provided with a plurality of heater members surrounding and heating a ring mounted on the roll, wherein some of a plurality of seating rollers can vary in position according to the diameter of the roll and the plurality of heater members can vary in position according to the diameter of the ring.

Description

Ring changer of roll {APPARATUS FOR REPLACING RING OF ROLL}

The present invention relates to a ring replacement device for a roll capable of disassembling and assembling a ring mounted on the neck portion of a roll, such as a rolling roll, for recycling.

In hot rolling, a rolling roll with high hardness and high strength is cast and used to roll the material while withstanding high temperature, pressure and impact. These rolling rolls are used until their expiration date, and the rolls that have reached the end of their service life are collectively processed into general scrap metal or sold and cut and pulverized into scrap.

If materials for the steel industry, such as discarded rolling rolls, are treated only as scrap, they have no choice but to be melted and used again, which is not appropriate in a situation where activities for reducing carbon dioxide are emerging as important for the improvement of the earth's environment. In order to protect the earth's environment, it is necessary to give value to materials such as rolling rolls that have been used for primary use and to recycle them.

In order to be able to effectively recycle everything from discarded rolling rolls, etc., it is necessary to be able to mine the materials or parts of the rolls easily. For example, it should be preceded by smoothly disassembling the ring that is shrink-fitted from the roll neck portion.

(Patent Document 1) KR 685032 B1

An object of the present invention is to provide a ring replacement device for a roll that facilitates disassembling a ring mounted on the neck portion of the roll and assembling it to a new roll so as to achieve recycling of the roll.

A roll ring replacement device according to an embodiment of the present invention includes: a roll rotating unit having a plurality of seating rollers for rotatably supporting the roll; and a ring heating unit installed on a bogie that is movable from one side of the roll rotating unit and having a plurality of heater members for heating while enclosing the ring mounted on the roll, wherein the roll rotating unit includes: a support plate; Support brackets installed in pairs on the support plate; the plurality of seating rollers positioned between the pair of support brackets and rotatably supported by the support brackets on the rotation shaft; and a first motor connected to at least one rotation shaft of the plurality of seating rollers, and on one side of each support bracket, a plurality of concave grooves into which the rotation shaft of the seating roller is inserted are spaced apart from each other in the width direction of the roll is formed along, some of the plurality of seating rollers are changed in positions in the width direction of the roll by selectively inserting a rotation shaft into one of the plurality of concave grooves, and the plurality of heater members are positioned according to the diameter of the ring may be variable.
A roll ring replacement device according to another embodiment of the present invention, a roll rotating unit having a plurality of seating rollers for rotatably supporting the roll; and a ring heating unit installed on a bogie that is movable from one side of the roll rotating part, and having a plurality of heater members for heating while enclosing the ring mounted on the roll, wherein the ring heating unit is located on the bogie annular frame; the plurality of heater members disposed at predetermined intervals in the circumferential direction within the frame; and a plurality of moving parts installed on the frame to move each heater member in a radial direction of the frame, wherein some of the plurality of seating rollers have a variable position according to the diameter of the roll, and the plurality of heater members are The position may vary depending on the diameter of the ring.
A roll ring replacement device according to another embodiment of the present invention, a roll rotating unit having a plurality of seating rollers for rotatably supporting the roll; and a ring heating unit installed on a bogie that is movable from one side of the roll rotating part, and having a plurality of heater members for heating while enclosing the ring mounted on the roll, wherein some of the plurality of seating rollers of the roll The positions of the plurality of heater elements are variable according to the diameter, and the positions of the plurality of heater members are changed according to the diameters of the rings. It may further include a ring tightening unit that is installed to attach the ring to the neck portion of the roll.

As described above, according to the present invention, it is possible to easily disassemble the ring from the roll and assemble it on a new roll, thereby obtaining the effect of improving work efficiency.

In addition, according to the present invention, the ring can be replaced regardless of the case where the ring is not constant or has a different standard, thereby maximizing the recycling of the roll and its added value.

1 is a front view showing a ring replacement device for a roll according to an embodiment of the present invention.
FIG. 2 is a plan view of the roll rotating part shown in FIG. 1 .
FIG. 3 is a side view of the roll rotating part shown in FIG. 1 .
4 is a side view of the ring heating unit shown in FIG. 1 .
FIG. 5 is a partially enlarged view of FIG. 4 .
6 is a view showing a use state of the ring tightening unit.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to exemplary drawings. In adding reference numerals to the components of each drawing, it should be noted that the same components are given the same reference numerals as possible even though they are indicated on different drawings.

1 is a front view showing a ring replacement device for a roll according to an embodiment of the present invention. As shown here, the device for replacing a ring of a roll according to an embodiment of the present invention may include a roll rotating unit 10 and a ring heating unit 20 .

For example, the neck portion of the roll 1, such as a rolling roll, is equipped with a ring 2 that is press-fitted in the form of a sleeve. When the choke (not shown) is assembled on the roll, the ring and the retainer of the bearing (not shown) come into contact, and the ring may be worn due to slip and thrust force between the driving roll and the bearing rotating along the roll.

In addition, since the ring 2 which is press-fitted to the roll 1 is assembled by shrink fitting to the neck of the roll, it cannot be disassembled without applying heat to the ring. Therefore, the present invention intends to propose a ring replacement device for rolls that enables the smooth disassembly and assembly of the rings of the rolls, and enables mining and recycling of the value-added parts.

FIG. 2 is a plan view of the roll rotating unit shown in FIG. 1 , and FIG. 3 is a side view of the roll rotating unit shown in FIG. 1 .

The roll rotating part 10, the support plate 11; Support brackets 12 installed in pairs on this support plate; A plurality of seating rollers 13 positioned between the pair of support brackets and the rotation shaft is rotatably supported by the support brackets; and a first motor 14 connected to at least one rotation shaft of the plurality of seating rollers.

2 shows an example in which four mounting rollers 13 are provided. For example, a first seating roller 131 connected to the first motor 14; a second seating roller 132 disposed parallel to the first seating roller and spaced apart from the first seating roller in the width direction (y) of the roll; a third seating roller 133 disposed in series with respect to the second seating roller and spaced apart from the second seating roller in the longitudinal direction (x) of the roll; and disposed parallel to the third seating roller and spaced apart from the third seating roller in the width direction (y) of the roll, and disposed in series with the first seating roller and first seating in the longitudinal direction (x) of the roll A fourth seating roller 134 spaced apart from the roller may be included.

A transmission mechanism 15 such as a gear or a belt may be interposed between the first motor 14 and the first seating roller 131 to transmit the rotational force of the first motor to the first seating roller.

Optionally, the second seating roller 132 and the third seating roller 133 are connected to each other via the connecting shaft 135 so that the second seating roller and the third seating roller are in the same rotational direction and at the same rotational speed. can rotate The first seating roller 131 and the fourth seating roller 134 may also be connected to each other by another connecting shaft (not shown).

The first mounting roller 131 and the second mounting roller 132 may be installed between a pair of support brackets 12 , and the third mounting roller 133 and the fourth mounting roller 134 are a different pair. It may be installed between the support brackets 12 of

Each support bracket 12 has a V-shaped cutout 121 formed in the center of the support bracket in the longitudinal direction, that is, in the width direction (y) of the roll, and the roll 1 seated on the plurality of seating rollers 13 . ) can be prevented.

In addition, in each of the support brackets 12 , a plurality of concave grooves 122 into which the rotation shaft of the corresponding seating roller is inserted is provided on one side where the second seating roller 132 or the third seating roller 133 is installed at a predetermined distance from each other. and may be formed along the width direction (y) of the roll. A single concave groove 122 or a bearing part may be provided on the other side where the first seating roller 131 or the fourth seating roller 134 is installed.

Accordingly, the position of the first mounting roller 131 or the fourth mounting roller 134 in each pair of support brackets 12 on the support plate 11 is fixed, and the second mounting roller 132 or the second mounting roller 132 or the second mounting roller 134 is fixed. 3 The seating roller 133 may be installed with its rotational shaft being selectively inserted into one of the plurality of concave grooves 122 so that its position is changed in the width direction (y) of the roll.

For example, when the diameter of the roll 1 is increased, the second mounting roller 132 and the third mounting roller 133 are formed in the support bracket 12 by the first mounting roller 131 and the fourth mounting roller 134 . The rotation axis is placed on the concave groove 122 located far away from the roll in the width direction (y).

Conversely, when the diameter of the roll 1 is small, the second seating roller 132 and the third seating roller 133 are closer to the first seating roller 131 and the fourth seating roller 134 in the support bracket 12 . The rotary shaft is placed on the located concave groove 122 .

Here, the number, shape, size, arrangement, and the like of the seating rollers 13 are not limited to the above-described and illustrated examples.

The first seating roller 131 connected to the first motor 14 rotates after the roll 1 on which the ring 2 is disassembled or assembled is seated between the upper portions of the plurality of seating rollers 13 and the seating rollers. and act as a driving roller, the plurality of seating rollers can rotate, ie, roll, the roll in place.

FIG. 4 is a side view of the ring heating unit shown in FIG. 1 , and FIG. 5 is a partially enlarged view of FIG. 4 .

The ring heating unit 20 may be installed on the bogie 21 that is movable back and forth from one side of the roll rotating unit 10 . A plurality of wheels 211 are mounted on the lower portion of the bogie, and a handle 212 that an operator can grip and push or pull may be provided on one side of the bogie.

The ring heating unit 20 includes an annular frame 22 positioned on the bogie 21; a plurality of heater members 23 arranged at predetermined intervals in the circumferential direction within the frame; and a plurality of moving parts 24 installed on the frame to move each heater member in a radial direction of the frame.

On both sides of the hollow frame 22 , the neck portion of the roll 1 or the entrance and exit of the ring 2 may be formed. A plurality of support legs 221 may be connected to the outer circumferential surface of the frame.

The ring heating unit 20 may further include a lifting unit 25 disposed between each supporting leg 221 or the frame 22 and the bogie 21 to adjust the height of the frame 22 .

The lifting unit 25 may include an actuating body 252 having a telescoping actuating rod 251 , such as a hydraulic cylinder or an electric actuator. This working body is fixed upright on the bogie 21, and the frame 22 or the support leg 221 may be connected to an end of the working rod.

The heater member 23 is an arc-shaped electric heating type heater, and electric heat is generated by supplying power from the outside by an electric wire (not shown).

The plurality of moving parts 24 are installed on a portion of the outer peripheral surface of the frame 22 that is out of a connection portion with the support leg 221 , and can move the corresponding heater member 23 radially of the frame.

Each moving part 24, the heater member 23 is connected to one end of the screw shaft 241; a second motor 242 mounted on the outer circumferential surface of the frame 22, connected to the screw shaft, and capable of forward and reverse rotation; and a gear unit 243 connected to the motor shaft of the second motor and engaged with the screw shaft.

The screw shaft 241 may be installed through a through hole 222 formed in the frame 22 or installed through a through hole of a flange (not shown) protruding toward an entrance on one side of the frame to be rotatably supported.

When the second motor 242 rotates the screw shaft 241 through a gear portion 243 such as, for example, a worm gear, the screw shaft is moved radially inward or outward of the frame 22, and the movement of the screw shaft Accordingly, the heater member 23 fixed to the end may widen or narrow the distance between each other. Accordingly, the spacing between the plurality of heater members can be adjusted according to the diameter of the ring 2 .

The neck portion of the roll 1 is inserted into the frame 22 , and the ring 2 to be disassembled or assembled may be surrounded by arc-shaped heater members 23 and heated by radiant heat thereof.

6 is a view showing a use state of the ring tightening unit.

After the ring 2 has been disassembled from the neck portion of the roll 1, a new ring, or a ring 2 regenerated by repairing and grinding after disassembly, is fitted to the neck portion of the roll, as shown in FIG. The ring fastener 30 of the invention can be installed on the roll.

The ring tightening part 30 includes a first shaft 31 having a locking part 35 at one end and having a first male thread formed on an outer circumferential surface; a second shaft 32 having a locking part 36 at one end and having a second male thread opposite to the first external thread on an outer circumferential surface; and a turnbuckle 33 connected between the first shaft and the second shaft and having a first female screw thread fastened to the first male screw thread on one side and a second female screw thread fastened to the second male screw thread on the other side. have.

While the ring 2 is inserted into the neck of the roll 1, one of the locking parts 35 and 36 on both sides is hooked to the ring, and the other locking part is hooked to the ring on the opposite side or opposite side of the roll. Then, by rotating the turnbuckle 33 to narrow the distance between the first shaft 31 and the second shaft 32, the ring can be firmly fixed in close contact with the neck portion of the roll.

Hereinafter, the operation of the ring replacement device of the roll according to an embodiment of the present invention configured as described above will be briefly described.

The roll 1 to be replaced with the ring 2 is seated on the seating rollers 13 of the roll rotating part 10 . Previously, the distance between the first mounting roller 131 and the second mounting roller 132 and the distance between the third mounting roller 133 and the fourth mounting roller 134 may be adjusted according to the diameter of the roll. have.

The roll 1 seated in this way rotates slowly by rotating the first seating roller 131 connected to the first motor 14 , and the second to fourth seating rollers rotate together due to the rotation of the roll.

In this state, the operator moves the bogie 21 to position the ring heating unit 20 adjacent to one side neck of the rotating roll 1 .

The second motor 242 of the plurality of moving parts 24 in the frame 22 of the ring heating part 20 rotates the screw shaft 241 to move it radially outward, and a heater member fixed to the end ( 23), adjust the distance between each other as wide as possible.

In addition, the height of the frame 22 on the bogie 21 is adjusted by the operation of the lifting unit 25 of the ring heating unit 20 to expand and contract the operation rod 251 , and accordingly, the neck of the roll 1 is a heater It is fitted to the center of the members (23).

The operator further moves the bogie 21 and allows the ring 2 to be positioned between the heater members 23 of the ring heating unit 20 .

When the second motor 242 of the plurality of moving parts 24 in the frame 22 moves radially inward while reversely rotating the screw shaft 241 in accordance with the diameter of the ring 2, fixed to the end As the distance between the heater members 23 decreases, the heater members surround the ring.

Next, electricity is supplied to each heater member 23 to heat the ring 2 by radiant heat from the heater member.

At this time, since the roll 1 is rotated by the roll rotating part 10, the ring 2 can be rotated between the heater members 23, and in this way, the ring can be heated uniformly.

After the heating of the ring 2 is completed, the operation of the roll rotating unit 10 is stopped, and the operator moves the bogie 21 of the ring heating unit 20 in the opposite direction from before.

An operator may hammer the ring 2 to disengage the ring from its original position on the shrink-fitted roll 1, and then use a tool or the like to remove the ring from the roll. Since the ring is heated and has an enlarged inner diameter, the ring can be easily withdrawn from the neck portion of the roll.

Finally, the operator can use a tool or the like to insert a new ring, or a ring 2 regenerated by repairing and polishing after disassembly, by separately heating the ring 2 with a heating torch or the like, and then inserting the ring into the neck portion of the roll 1 . Since the ring is heated and has an enlarged inner diameter, the ring can be easily shrink-fitted to the neck of the roll.

In a state in which one of the locking parts 35 and 36 of the ring fastener 30 is hooked on the replaced ring 2 and the other locking part is hooked on the ring on the opposite side or opposite side of the roll 1, the turnbuckle ( 33) to reduce the distance between the first shaft 31 and the second shaft 32, the ring is pulled toward the center in the longitudinal direction (x) of the roll so that the ring is in close contact with the neck of the roll.

When the ring 2 is cooled while being in close contact with the neck portion of the roll 1 by the ring tightening portion 30 for a predetermined time, the ring can be firmly fixed to the neck portion of the roll.

As described above, according to the present invention, it is possible to easily disassemble the ring from the roll and assemble it on a new roll, thereby obtaining the effect of improving work efficiency.

In addition, according to the present invention, the ring can be replaced regardless of the case where the ring is not constant or has a different standard, thereby maximizing the recycling of the roll and its added value.

The above description is merely illustrative of the technical spirit of the present invention, and various modifications and variations will be possible without departing from the essential characteristics of the present invention by those skilled in the art to which the present invention pertains. Accordingly, the embodiments disclosed in the present specification and drawings are not intended to limit the technical spirit of the present invention but to explain, and the scope of the technical spirit of the present invention is not limited by these embodiments. The protection scope of the present invention should be construed by the following claims, and all technical ideas within the equivalent range should be construed as being included in the scope of the present invention.

1: Roll 2: Ring
10: roll rotating part 11: support plate
12: support bracket 13: mounting roller
14: first motor 15: power mechanism
20: ring heating unit 21: bogie
22: frame 23: heater element
24: moving unit 25: elevating unit
30: ring tightening part 31: first shaft
32: second shaft 33: turnbuckle
35, 36: locking part

Claims (8)

a roll rotating unit having a plurality of seating rollers for rotatably supporting the roll; and
A ring heating unit installed on a bogie movable from one side of the roll rotating unit and having a plurality of heater members for heating while enclosing the ring mounted on the roll
including,
The roll rotating part,
support plate;
Support brackets installed in pairs on the support plate;
the plurality of seating rollers positioned between the pair of support brackets and rotatably supported by the support brackets on the rotation shaft; and
A first motor connected to at least one rotation shaft of the plurality of seating rollers
including,
On one side of each support bracket, a plurality of concave grooves into which the rotation shaft of the seating roller is inserted are formed along the width direction of the roll at a predetermined distance from each other,
Some of the plurality of seating rollers have a position variable in the width direction of the roll by selectively inserting a rotation shaft into one of the plurality of concave grooves,
The plurality of heater members is a ring replacement device of a roll having a variable position according to the diameter of the ring.
delete delete a roll rotating unit having a plurality of seating rollers for rotatably supporting the roll; and
A ring heating unit installed on a bogie movable from one side of the roll rotating unit and having a plurality of heater members for heating while enclosing the ring mounted on the roll
including,
The ring heating unit,
an annular frame positioned on the bogie;
the plurality of heater members disposed at predetermined intervals in the circumferential direction within the frame; and
A plurality of moving parts installed on the frame to move each heater member in a radial direction of the frame
includes,
Some of the plurality of seating rollers have a variable position depending on the diameter of the roll,
The plurality of heater members is a ring replacement device of a roll having a variable position according to the diameter of the ring.
5. The method of claim 4,
The ring heating unit is disposed between the frame and the bogie, the ring replacement device of the roll further comprising a lifting unit for adjusting the height of the frame.
5. The method of claim 4,
The moving unit,
a screw shaft to which the heater member is connected to one end;
a second motor mounted on the outer circumferential surface of the frame, connected to the screw shaft, and capable of forward and reverse rotation; and
A gear part connected to the motor shaft of the second motor and engaged with the screw shaft
Ring replacement device of the roll comprising a.
a roll rotating unit having a plurality of seating rollers for rotatably supporting the roll; and
A ring heating unit installed on a bogie movable from one side of the roll rotating unit and having a plurality of heater members for heating while enclosing the ring mounted on the roll
including,
Some of the plurality of seating rollers have a variable position depending on the diameter of the roll,
The position of the plurality of heater members is variable according to the diameter of the ring,
When the new ring or the regenerated ring is fitted to the roll after the ring is disassembled from the roll, the ring replacement device for the roll further includes a ring tightening part installed on the roll to attach the ring to the neck of the roll .
8. The method of claim 7,
The ring tightening part,
a first shaft provided with a locking portion at one end and having a first male thread formed on an outer circumferential surface;
a second shaft having a locking part at one end and having a second male screw thread opposite to the first male screw thread on an outer circumferential surface; and
A turnbuckle connected between the first shaft and the second shaft, having a first female thread fastened to the first male thread on one side and a second female thread fastening with the second male thread on the other side.
A ring replacement device for a roll comprising a.

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