KR200194119Y1 - Apparatus for disjointing and jointing a chock of the roughing mill roll - Google Patents

Abstract

The present invention relates to a device that is mounted on a mounting table for disassembling and assembling the choke of the rolled roll, the choke disassembly and assembly device, a table for placing the choke roll rolls, a table for placing the choke, and settled on the table A plurality of stoppers for fixing the position of the choked, the forward and backward moving means for advancing the table forward and backward along the longitudinal direction of the mounting table, and the vertical moving means for moving the table in the vertical direction along the vertical direction of the mounting table. Since the choke disassembly and assembly of the rolled rolling rolls can be carried out conveniently and easily, it is possible to prevent the collision of chokes and rolls due to the disassembly and assembly of the chokes using a crane, thereby preventing the chokes and bearings from being damaged. It can prolong the service life of the bearing and also cause overload caused by excessive operation of the crane. It is possible to prevent breakdown and tripping, reduce productivity of workers, improve productivity, and in particular, eliminate the risk of safety accidents, thereby reducing the mental burden of workers.

Description

Apparatus for disjointing and jointing a chock of the roughing mill roll}

The present invention relates to a choke dismantling and assembling device of a rolled rolling roll used in a rolling production line, especially when dismantling and assembling the choke without using a crane, to prevent damage to the choke and bearings and to reduce the workload of maintenance workers The present invention relates to a choke disassembly and assembly apparatus of a rolled roll which can reduce the mental burden of an operator by completely removing the risk factors of safety accidents due to the disassembly and assembly of the choke using a crane.

In general, in the rolling production line of the steel mill to perform the rolling operation using the width rolling roll to adjust the width of the coil during the rolling operation. When the rolled material is rolled for a certain period of time, for example, two weeks of primary width rolling (VSB) and five weeks of second width rolling (E2A, E2B), the rolling roll is replaced due to wear of the rolling portion. Done. The replaced rolling rolls are dismantled for turning and then turned to a certain amount and then assembled again and reused during rolling.

Choke disassembly and assembly of the secondary rolling roll (E2), as shown in Figure 4, using the crane winding 54, first, by hooking the wire 55 to the hook of the upper choke 12, the elasticity of the crane After the dismantling of the upper choke (12) using the (figure line) is settled in a certain position and again by using the elasticity of the crane by walking on the hook of the lower choke (11) using the crane's right (54) The lower choke 11 is dismantled (shown in phantom).

After that, when the turning work of the rolling rolls is completed, the rolling rolls are assembled by working in the reverse order of disassembly.

On the other hand, referring to Figure 5, the choke disassembly and assembly of the primary rolling roll VSB, first, using the crane winding 56 and the winding winding 54 of the crane to the wire 55 to the ring portion of the upper choke 53 At the same time, the upper choke is dismantled, after which the lower choke is dismantled using only the crane's right.

After that, when the turning work of the rolling rolls is completed, the rolling rolls are assembled by working in the reverse order of disassembly.

However, dismantling and assembling of the rolled roll chocks as described above is carried out using a crane, which is difficult to hook the wire to the choke, and is a dangerous work because the use of sovereignty and the right to hold at the same time, thereby reducing work efficiency In the process of disassembling and assembling the choke, the choke and bearing (not shown) are broken by the collision with the roll. In addition, when the choke is forcibly dismantled due to unstable operation using the elasticity of the crane, the dismantled force is overloaded due to excessive operation of the crane, and in particular, a considerable amount of risk factors that may cause a safety accident during work are distributed. This is accompanied by a problem of avoiding work and excessive choke disassembly and assembly time, which leads to an increase in maintenance work time.

In order to solve the conventional problems as described above, the present invention is convenient and safe to perform choke disassembly and assembly of the rolling roll, reducing the work load of the operator to improve productivity, and completely eliminate the risk of safety accidents The aim is to provide a device for disassembling and assembling the choke of the rolling mill without the use of cranes to reduce the burden of doubt.

According to the present invention, the apparatus mounted on the mounting to disassemble and assemble the choke of the rolled roll in order to achieve the above object, the mounting base on which the rolled roll is placed, the table for placing the choke, and A plurality of stoppers for fixing the position of the choke settled on the table, forward and backward moving means for advancing the table forward and backward along the longitudinal direction of the mount, and the table in the vertical direction along the vertical direction of the mount. Characterized in that the upper and lower movement means for moving.

1 is a perspective view showing a state in which the roll assembly is mounted on the disassembly and assembly of the choke according to an embodiment of the present invention.

Figure 2 is a front view of the disassembly and assembly of the choke according to an embodiment of the present invention.

3 is a view showing a state of disassembly and assembly of chokes according to an embodiment of the present invention.

4 is a view showing a state of disassembly and assembly of the choke according to the conventional embodiment.

Figure 5 is a view showing a state of disassembly and assembly of chokes according to another embodiment of the prior art.

<Description of Symbols for Major Parts of Drawings>

14: table

15: lifter

18: body

19a, 19b: rail

20: horizontal operation cylinder

21: Base

22: loading deck

23a, 23b, 23c, 23d: stopper

25a, 25b: raising and lowering cylinder

Hereinafter, with reference to the accompanying drawings illustrating a preferred embodiment of the present invention, as follows and the same components use the same reference numerals.

Figure 1 shows a state in which the assembly of the rolled roll is mounted on the dismantling and separating device of the choke according to an embodiment of the present invention. In other words, the choke dismantling and separating apparatus according to the present invention is divided into the upper choke 12 disassembly and assembly, and the lower choke 11 disassembly and assembly.

First, referring to FIGS. 1 and 2, each of the dismantling and separating parts of the upper choke and the lower choke has a structure having the same type, and a loading rack in which the rolled roll assembly 13 in which the choke is assembled may be stacked. Has (22). This loading base 22 uses MC (MC) material which is excellent in friction with a roll and does not scratch a roll.

The base 21 having the overall basic shape of the choke dismantling and separating device of the present invention generally constitutes the entire base frame using I-shaped steel, and rails 19a and 19b are respectively provided on both sides of the upper part of the base 21. Is installed. The lower part of the body 18 is supported by the liner bearing 24 of the dovetail type, that is, the dovetail type, and is coupled to the rails 19a and 19b, respectively, so that the lifter ( Even if 15 is raised, the liner bearing 24 does not leave the rails 19a and 19b.

That is, a lifter 15 is assembled to the inner surface of the body 18, and a liner 16 is assembled to the outer surface of the lifter 15. This liner 16 is to facilitate the movement between the body 18 and the lifter 15. Accordingly, the lifter 15 smoothly rises or descends along the inner surface of the body 18.

Two tables 14 are provided on the lifter 15, and the upper chocks and the lower chokes of the rolling roll are settled on each table 14, respectively. On the other hand, four stoppers 23a, 23b, 23c, and 23d are provided on each table 14 so as to be able to move along the grooves machined in the table 14.

In addition, under the body 18, elevating cylinders 25a and 25b are installed on the left and right sides and connected to the table 14, respectively. Therefore, the table 14 moves up and down by the operation of the lifting cylinders 25a and 25b.

The body 18 is moved forward or backward along the rails 19a and 19b by the horizontally operated cylinder 20 installed on the base 21. On the other hand, a sensor (not shown) for detecting the departure from the rails 19a and 19b by moving forward or backward excessively is installed in the body 18, and the lifter 15 is excessively raised or A sensor for detecting the falling is installed in the lifter, and only one sensor 17a of these is shown in the figure. The movement of the body 18 or the lifter 15 is sensed by these sensors.

The dismantling and separating device of the rolled roll choke according to the present invention configured as described above operates as described below.

First, by the operation of the horizontal operation cylinder 20, the body 18 is moved forward or backward. That is, when the horizontal operation cylinder 20 is operated, the liner bearing 24 installed below the body 18 moves along the rails 19a and 19b installed on the base 21. The installed sensor detects this and stops the movement of the liner bearing 24.

On the other hand, the lifting or lowering operation of the lifter 15 is made by the operation of the lifting cylinders 25a and 25b. That is, when the elevating cylinder (25a, 25b) is operated, the lifter 15 is raised or lowered along the inner surface of the body 18, wherein the friction surface is the liner 16 assembled to the lifter 15 And the inner side of the body 18. When the lifter 15 moves for a certain period, the detection sensor installed on the side of the lifter 15 detects this and stops the operation of the lifting cylinder to prevent the lifter 15 from excessively rising or falling.

In the table 14, stoppers 23a, 23b, 23c, and 23d are provided so that the chokes 11 and 12 of the rolling rolls 13 can be caught by the jaws during choke disassembly and assembly, and the stoppers are rolled roll chocks. It moves along the groove formed in the table 14 so that a position can be selected according to the kind of.

On the other hand, referring to Figure 3, the width rolling roll to dismantle the choke is placed on the loading rack 22 using a crane. That is, after the stoppers select a predetermined position on the table 14, by operating a switch (not shown), the horizontal operation cylinder 20 and the lifting cylinders 25a, 25b are operated to raise or lower the table 14. The upper choke 12 and the lower choke 11 are placed on the table in a state of being positioned at a predetermined height.

As described above, the choke disassembly preparation is completed by placing a rolling roll on the table 14.

Thereafter, the horizontal operation cylinder 20 is reversed so that the upper choke 12 can be caught by the stoppers 23a and 23c and dismantled. Then, the lower choke 11 that extends over the stoppers 23b and 23d is disassembled in the same manner.

After turning the rolled roll in which the upper choke and the lower choke were dismantled, the upper choke and the lower choke are assembled on the rolled roll processed in the reverse order. That is, the horizontal operation cylinder 20 is advanced so that the upper choke and the lower choke across the stopper are cooked on the rolling roll.

As described above, according to the present invention, the choke disassembly and assembly of the rolled rolling rolls is carried out conveniently and easily, thereby preventing the collision of the choke and the roll due to the disassembly and assembly of the choke by using a crane, thereby preventing the choke and the bearing from being damaged and the choke. And can extend the service life of the bearing, and also prevent breakdowns and trips caused by overloading of the crane, and reduce the operator's workload, thereby improving productivity and eliminating the risk of safety accidents. The effect of reducing mental burden is obtained.

Or more, the above is merely illustrative of the preferred embodiment of the present invention to those skilled in the art to which the present invention belongs without departing from the spirit and spirit of the present invention described in the appended utility model registration scope without modification and changes to the present invention Can be.

Claims (2)

In the device mounted on the mounting to disassemble and assemble the choke of the rolled roll, A loading stand in which the width rolling rolls are stacked; A table for placing the choke of the rolled rolling roll; A plurality of stoppers for fixing the positions of the chokes settled on the table, Forward and backward moving means for advancing the table forward and backward along the longitudinal direction of the mount; Disassembling and assembling apparatus of the choke, characterized in that consisting of the vertical movement means for moving the table in the vertical direction along the vertical direction of the mount. 2. The choke disassembly and assembling apparatus according to claim 1, wherein at least one pair of rails for guiding the movement of the table is mounted on the mounting table.