KR20020037544A - Apparatus for disjoining and joining the hot blast valve stem for the blast furnace - Google Patents

Abstract

PURPOSE: An apparatus for assembling and disassembling a hot blast valve stem for a blast furnace is provided which prevents damages of a boss part and a screw part of the hot blast valve stem, and prevents safety accidents and substantially shortens a working time by automatically assembling or disassembling the hot blast valve stem. CONSTITUTION: In an apparatus for disassembling or assembling a hot blast valve stem(2) which is stuck onto a hot blast valve disk(1) by a high heat, the apparatus for assembling and disassembling the hot blast valve stem(2) for the blast furnace comprises a fixed frame(100) onto which the hot blast valve stem(2) is rested and fixed; a disk fixing means which is mounted on the fixed frame(100) so as to fix the hot blast valve disk(1); and a disassembling and assembling means which is mounted on the fixed frame(100) in the state that the disassembling and assembling means is separated from the disk fixing means so as to fix and rotate the hot blast valve stem(2), and which can be moved along a length direction of the hot blast valve stem(2), wherein the hot blast valve stem(2) is separated from the hot blast valve disk(1) as the hot blast valve stem(2) fixed onto the disassembling and assembling means is being rotated and moved to a direction of separating the disassembling and assembling means from the hot blast valve disk(1).

Description

Apparatus for disjoining and joining the hot blast valve stem for the blast furnace}

The present invention relates to a disassembly and assembly apparatus of a stem, which is assembled to a hot blast furnace facility of a blast furnace factory, to which a coolant for transporting a central shaft for power transmission and various equipments is transferred, and more specifically, to a coolant for cooling a high temperature facility. And a device for disassembling and assembling a hot air change stem (STEM) which is fixed by high heat.

In general, steel mills in blast furnaces and blast furnace plants carry out a process of transporting and loading various raw materials to produce steel, and a series of processes of selecting and transporting raw materials of a size suitable for the purpose of use. In the process of reprocessing to produce molten iron using the raw materials selected and transported in this way, various facilities for handling and controlling high heat are installed.

In particular, the blast furnace plant is the most important factory for producing the essential water in the steelmaking process, and there are various facilities for handling high heat, and the cylindrical pipe of stainless steel or the like to guide the flow of cooling water to cool such high heat facilities. Cooling equipment such as shafts are used in combination with high temperature equipment.

Although various types of cooling facilities are used in response to the characteristics and characteristics of the high heat facilities of the steelmaking area and the blast furnace plant as described above, the most commonly used among them are the hot air change stems installed on the hot air change disks. .

The hot air change stem is made of stainless steel and is combined with a disk made of alloy material to control high temperature hot air to guide inflow and outflow of cooling water for cooling the disc. And the disk, by the action of the chain and cylinder connected to the shaft of the reducer, the power of the motor (not shown) is transmitted to move up and down to control the hot air of the high temperature.

Referring to FIG. 1, the hot air flow stem 2 includes a first screw portion of a coolant inlet portion connected to an elbow, an intermediate thread portion connected to a cylinder, and a second screw portion at an end portion to which a disc-shaped disk 1 is assembled. The outer shape of the hot air flow stem 2 has a cylindrical structure made of stainless steel.

Disassembly and repair of the hot air flow stem for replacing or repairing the hot air flow stem system 2 is required due to prolonged use or occurrence of abnormalities in the hot air flow chamber. For this disassembly and repair work, according to the conventional embodiment, the disk 1 is placed on two support necks (not shown), and then two nuts are provided on the second screw part which is machined at the end of the hot air flow stem 2. (7) was fastened and the hammer wrench (5) was coupled to the nut (7). Then, the worker disassembled the hot air flow stem 2 from the disk 1 by hitting the hammer wrench 5 with the hammer 6. Then, the coupling operation of the disk 1 of the hot air deflection stem 2 was performed in the opposite manner to the disassembly operation.

However, in the conventional hot air stem disassembly and joining operations as described above, damage to the screw portions formed at the inlet and end portions of the hot air flow stem 2 is caused, and the hot air flow stem 2 of stainless steel is If the screw part is damaged due to the imbalance of the fastening force between the nuts 7, which is a general steel, it is impossible to separate the two nuts 7 from the thread part, and the cutting part of the hot air valve stem 2 is not only generated. When hitting with the hammer (6) has caused a problem of bending the hot air deflection stem (2) has caused a problem that the disk 1 is not mounted smoothly.

Further, when the assembly of the hot air flow stem 2 is performed in a state where the center of the disc 1 is different from the material of the hot air deflection stem 2, the disc 1 having a relatively weak material is produced. The work method that depends only on the use of various sizes of air holes and manual work, such as damage of the screw part of the machine, causes many facilities such as increase in the number of workers, delay in working time and accumulation of fatigue, and the risk of safety accidents. .

Another approach has been proposed to solve the above problem. That is, according to another conventional embodiment, the disk 1 is placed on two supporters (not shown) and the disk is fixed with a fixing bolt (not shown), and then a pipe wrench 3 and a high pressure pipe 4 are utilized. After wrapping the bosses of the disc 1 and the hot air deflection stem 2, the hot air deflection stem 2 was disassembled from the disc 1 by rotating the hot air deflection stem 2. On the contrary, the hot air deflection stem 2 is coupled to the disc 1 by rotating the hot air deflection stem 2 in the opposite direction.

As described above, although the hot air flow stem is disassembled or assembled by using the pipe wrench 3 and the high pressure pipe 4, the pipe wrench 3 is not only required for the large air pressure pipe 4 but also the hot air flow stem 2. Many hours of work and manpower were required, such as leaving the country's mark (not shown), and the risk of safety accidents still existed due to workers' excessive work. In addition, limited assembly work can be performed according to the limitations of the work place and the size of the hot air flow stem, so that practical problems and work efficiency have not been improved, and the risk of safety accidents remains a serious problem.

The present invention has been made to solve the conventional problems as described above, to prevent damage to the boss portion and the screw portion of the hot air deflection stem and safety by automatically performing the disassembly or assembly of the hot air deflection stem to the hot air deflection disc In addition to preventing accidents, the work time is dramatically reduced, and the disassembly and assembly apparatus of the blast furnace hot air stem system, which can be dismantled and assembled precisely by simple operation and quick installation, and precise inspection of disk and stem, The purpose is to provide.

1 is an exploded assembly operation state of the blast furnace hot air change stem according to a conventional embodiment.

Figure 2 is a block diagram showing a disassembly and assembly device of the blast furnace hot air change stem according to the present invention.

3 is a view showing a state in which the hot air change stem coupled to the hot air change disc on the fixed frame according to the present invention.

Figure 4 is an exploded perspective view of a rotating device part of the disassembly and assembly apparatus of the hot air flow stem according to the present invention.

5 is a perspective view of a guide roll of the disassembly and assembly apparatus of the hot air flow stem according to the present invention.

6 and 6a are a perspective view and a cross-sectional view of the automatic take-out and out of the hot air flow stem of the disassembly and assembly apparatus of the hot air flow stem according to the present invention.

7 is a perspective view showing a stem support of the disassembly and assembly apparatus of the hot air flow stem according to the present invention.

<Description of Symbols for Major Parts of Drawings>

30: flange operating cylinder

31: Clamp Cylinder

41: guide roll portion

50: bearing block cylinder

70: rotating device

80: draw-out unit

90: drawout unit cylinder

100: fixed frame

200: hydraulic unit

300: digital measuring device

In order to achieve the above object, according to the present invention, a device for disassembling and assembling a hot air deflection stem assembled to a hot air deflection disc and fixed due to high heat is fixed frame to which the hot air deflection stem is seated and fixed, and the fixed frame A disk fixing means mounted on the fixing member to fix the disk of the hot air chamber, and mounted on the fixing frame in a state spaced apart from the disk fixing means to fix and rotate the hot air stem stem along a longitudinal direction of the hot air stem stem. The hot air deflection stem is separated from the hot air deflection disc as the disassembly means moves in a direction away from the hot air deflection disc while rotating the hot air deflection stem fixed to the disassembly disassembly means. It is characterized by.

Hereinafter, with reference to the accompanying drawings will be described a preferred embodiment of the present invention, the same configuration as the conventional configuration adopts the same reference numerals.

According to the present invention, the apparatus for disassembling and assembling the hot air deflection stem 2 of the hot air deflection disc 1 includes a fixed frame 100 on which the hot air deflection stem 1 is seated and fixed, and on the fixed frame 100. A disk fixing means mounted on the fixing frame 100 and spaced apart from the disk fixing means to fix and rotate the hot air changing system 2 to fix and rotate the hot air changing stem 2. It consists of disassembly and assembly means movable along the longitudinal direction of 2). The hot air deflection stem 1 is disassembled from the hot air deflection disc 1 by rotating the hot air deflection stem 1 on which the disassembly and assembly means is fixed and then moving in a direction away from the hot air deflection disc 1.

Disk fixing means according to an embodiment of the present invention, as shown in Figure 1, is installed in the fixed frame 100 to guide the hot air disk (1) and a cylindrical guide roll portion to assist the rotational force for the disk ( 40, 41, 42, 43 and the flange operating cylinder (30, 33) is operated so that the hot air disk (1) is seated on the fixed frame 100 by a crane (not shown) and then close to the guide roll portion And clamp cylinders 31, 32, 34, 35 for firmly fixing the hot air deflection disk 1 enclosed in the rotating device section 70 to be described later.

On the other hand, according to the present invention, the disassembly and assembly apparatus of the hot air deflection stem is a bearing block (51, 52) for adjusting the shanghai movement of the hot air deflection stem (1), and the bearing block (51, 52) hot air deflection disc (1) Inspection of the wear and condition of the bearing block operating cylinder 50 for guiding to the center of the center, the center cylinders 60 and 61 for centering the left and right centers of the hot air flow stem 2, and the hot air flow disc 1 to be seated. It further comprises a rotating device portion 70 for rotating the hot air disk (1) to facilitate.

In addition, the disassembly means of the disassembly and assembly device of the hot air flow stem according to the present invention, as shown in Figure 6, the inner diameter and the outer diameter of the tapered shape in which the hot air flow stem (2) is mounted, both ends are threaded Compression force on the split cylindrical taper sleeve 81, the hexagonal head fixing nut 82 of the inner diameter tapered hexagon head shape, and the taper sleeve 81 to impart rotational force to the tapered sleeve 81. Hollow hydraulic jack screws 83 and 84 for pressing and releasing the hot air deflection stem 2 by applying a valve, and a valve 85 for the purpose of entering and closing hydraulic oil to and from the hollow hydraulic jack screws 83 and 84. And a hydro wrench (HYD 'WRENCH) 80 having an inner diameter of a regular hexagon to impart rotational force to the hexagonal head fixing nut 82 combined as described above.

In addition, the disassembly and assembly means according to the present invention is an operation cylinder 90, which is coupled to a rectangular shanghai control bearing block 91 which draws out or draws in the hot air change stem 2 separated from the hot air change disc 1. 93, and a hydraulic unit 200 for controlling each cylinder required for disassembling and assembling the hot air deflection disk 1 and the stem 2.

Hereinafter, the operating state of the disassembly and assembly apparatus of the hot air flow stem according to the present invention configured as described above.

First, the guide rolls 40, 41, 42, 43 are components that act to set the correct disassembly and assembly positions of the hot air deflection disk 1 and the hot air deflection stem 2 seated on the rotary device 70. When the hydraulic cylinder 30 of the disk clamping portion moves forward to push out the hot air deflection disk 1, the hot wind caused by the upper plate (see FIG. 4) of the rotary unit 70 with the final limit setting action. It serves to guide the rotation of the side disk (1).

This guide roll portion, as shown in Figure 5, when the guide roll 44 is inserted into the fixing bracket 45 to simultaneously guide and rotate in contact with the side of the hot air deflection disk (1) of the guide roll 44 The configuration is completed by inserting the shaft 46 through the central portion.

2 and 3 again, the flange actuated cylinders 30 and 33 are firmly attached to the fixed frame 100 by fixing bolts, and the “a” shaped disks are machined at the end of the cylinder rod. It is made in combination with the fixing flanges (31, 34). The center of the upper end of the "a" shaped disk fixing flanges (31, 34) has a threaded hole (HOLE), the outer diameter of the cylinder (32, 35) is screwed, the cap on the cylinder rod ( Screws to which the CAP can be assembled are machined, and the CAP is fixed with fixing bolts.

The bearing block operating cylinder 50 is firmly attached to the fixed frame 100 by fixing bolts, and is screwed to the end of the cylinder rod to be assembled to the bearing block 51. As shown in FIG. 7, the bearing blocks 51 and 53 have a hot air deflection with the center cylinder 60 after the hot air deflection disc 1 and the hot air deflection stem 2 are seated on the fixed frame 100. It has the length of the cylinder rod necessary to accurately center the stem 2. In addition, after the hot air deflection disk 1 is seated on the fixed frame 100, the bearing blocks 51 and 52 are respectively heated and lowered by the lifting and lowering action of the oil jack 51B. It is located directly below.

In order to set a predetermined position for disassembly and assembly of the hot air flow stem 2, the bearings 51F and 51G in contact with the hot air flow stem 2 are bearing blocks (here, reference numeral 51 for simplicity of the drawings). Only two are inserted into the upper block 51D, and the outer diameter of the bearing is a sleeve made of a soft material to prevent scratches and marks due to rotational force and load during rotation of the hot air flow stem (2). 51H, 51I are assembled, and are fixed by the fixing shaft 51E at the center of the bearing shaft, and are fixed by bolts 51K, 51L at the lower surface of the upper block 51D, and guide the upper and lower conveyance. The lower base 51A including the two cylindrical support bars 51M and 51N, the support bars 51M and 51N of the upper block 51D and the oil jack 51B, and the upper block 51D. Oil jack (OIL JACK, 51B) is located at the center of the lower part of the combination, and it is composed of power source for lifting and lowering. 51 and the bearing block 52 are integrated with the bearing block operation cylinder by assembling the connecting bar 53 threaded at both ends.

End portions of the center cylinders 60 and 61 are fixed to the fixing frame 100, and screws are machined to the end portions of the cylinder rods to be integrated with the plate 61. The upper plate 70 of the rotating device unit 70 is processed into a rotating disc that can flow left and right after the hot air deflection disk 1 is seated, and an oil jack 71 fixed to the fixing frame 100 at the lower side thereof. ) Is placed, and the bearing block 74 is assembled to the piston rod stepped portion protruding upward, thereby completely fixing the bearing block 74 and the piston rod with the fixing bolt 73. Tapered bearing outlace 75 is assembled to the bearing block 74, the keyway and the key 76 is assembled to the outer diameter so as to slidably, and a hollow shaft protrudes below the rotating plate 70.

The bearing 77 assembled to the hollow shaft is assembled to the oil jack 71 piston rod, and the plate 79 and the bolt 79A are assembled to the piston rod, thereby completely fixing the thrust bearing 78.

Disassembly and assembly means of the hot air disk and stem is a key component for the automatic repair of the hot air disk 1 and the stem (2). That is, the disassembly and assembly means is a component for performing the direct draw-out operation by fixing and rotating the stem 2 of the hot air deflection disk, and the hydraulic wrench 80 having the hexagonal shape is fixed to the fixing frame 100. And, the outer diameter of the hexagon wrench 82 having a tapered inner diameter is inserted to perform forward or reverse rotation. When the tapered hexagon wrench 82 is inserted into the center of the hydraulic wrench 80, the tapered hexagon wrench A hydraulic hollow jack 83 is mounted to the rear end of the 82, and is fixed by connecting a threaded portion to both ends of the tapered sleeve 81. The hydraulic hollow jack (83) is connected to the other side of the tapered sleeve 81. 84) has a structure to be assembled again.

The hydraulic hollow jacks 83 and 84 respectively positioned at both ends of the tapered sleeve 81 have a cylindrical shape with a hollow center, and as shown in FIG. 6A, the tube 85C and the hydraulic line ( 85A, the piston 85B, the oil ring 85D, the fixing nuts 85F and 85G, and the elastic body 85E. In addition, in front of the hydraulic hollow jack 84 assembled on the other side of the tapered sleeve 81, a removable check valve 85 is attached to remove the twist of the hydraulic line LINE during rotation.

Hereinafter, the operating state of the hot air permeation decomposition assembly apparatus according to the present invention.

First, referring to FIG. 3, in order to disassemble and assemble the hot air deflection stem 2, the hot air deflection disc 1 and the stem 2 are placed on the fixed frame 100 using a crane (not shown). In addition, the clamp flange operating cylinders 30 and 33 have clamp flanges 31 and 34 equipped with upper clamp cylinders 32 and 35 corresponding to the disc 1, and the clamp flange operating cylinders 32, 35 is fixed to the fixed flanges 31 and 34, and the clamp flanges 31 and 34 including the cylinder head portion and the clamp cylinders 32 and 35 are screwed together and the disk is rotated by the rotating device portion 70. It has a cylinder rod length that can be in close contact.

Various dimensions of the clamp flanges 31 and 34 have various dimensions to achieve selective screwing according to the size and thickness of the disk 1, thus supporting all thrust transmitted during disassembly and assembly of the stem 2. Thus, the hot air deflection stem 1 can be easily disassembled and assembled.

Clamp flange 34 equipped with a clamp cylinder 33 provided on the opposite side of the clamp flange operating cylinder 30 is also a hot air flow stem by operating the clamp cylinder 35. This is a device for preventing thrust and rotational force transmitted during disassembly and assembly of

In addition, the guide rolls 41 and 43 perform a guide role when the disc 1 needs rotation after accurate centering and disassembly of the disc 1, and the guide rolls 41 and 43 are in close contact with the clamp flange operating cylinder 30. It buffers the disk.

The rotating unit 70 serves as a pedestal of the settled disk 1 and gives a rotational force for inspection by the digital measuring device 300 after the disassembly of the stem 2 is completed. In addition, the bearing block operating cylinder 50 is fixed to the fixed frame 100 and withdraws and retracts two bearing blocks 51 and 52 to be supported and shared at the bottom of the hot air change stem 2.

When a series of work preparations are completed, the disk fixing cylinders 32 and 35 and the disk fixing flanges 31 and 34 are brought into close contact with the guide rolls 41 and 43 by the operation of the cylinders 30 and 33, so that forward and backward contact After this is completed, the disc is fixed without flow by the clamping devices 31 and 34 equipped with the disc fixing cylinders 32 and 35 and the disc fixing flanges 31 and 34 prepared on the left and right sides of the disc 1. Is done.

In addition, the left and right positioning center cylinder 60 of the stem 1 has a transfer bar 61 attached to the end thereof so that the left and right positioning functions for matching with the hollow central axis of the hydraulic hydro wrench 80 are applied. 50, 60) to implement the forward and backward action.

On the other hand, when the hot air deflection disk (1) and the stem (2) is seated on the fixed frame (100), the bearing block for adjusting the height of the stem is located directly under the stem (2) to support the stem (2), 52) ensure the correct position of to pull out and assemble the hot air flow stem (2).

When the disassembly work of the stem 2 is completed, the digital measuring device inspects the wear, bending and corrosion of the stem 2 to determine whether it is used by the computer 200 and performs history management of the equipment.

When this series of positioning operations is completed, the hydraulic hydro wrench 80 drawn out at the end of the stem 2 is inserted into the stem 2 through the operation of the transfer cylinder 90 and the bearing block ( 51 and 52 are simultaneously supported by the action of the cylinder 50 and the fixing of the connecting bar 53 to prevent sagging and deformation of the stem 2. Withdrawal and assembly of the stem is fixed to the hydraulic wrench 80, the withdrawal taking out and assembly is performed by the left and right and forward and reverse rotation action.

That is, referring to FIGS. 6 and 6A, the stem 2 is inserted through the inner diameter of the tapered sleeve 81 and the outer diameter tapered sleeve 81 is placed inside the inner diameter tapered hexagon wrench 82. The hollow hydraulic jack 83 is operated by inserting and processing the threaded portion of the outer end of the tapered sleeve 81 at the inlet end thereof, thereby being pressed and fixed by the tapered sleeve 81 and the tapered hexagon wrench 82.

The fixed hot air flow stem 2 is integrated with the hydraulic hollow jacks 83 and 84, the tapered sleeve 81, the hexagon wrench 82, and the like, and is mounted with the hexagonal inner diameter of the hydraulic wrench 80, By the action of the power it can be separated and assembled from the disk 1 by repeating the left and right and reverse rotation.

Meanwhile, referring to FIG. 6A, when the hydraulic pressure is supplied into the tube 85B along the inflow line 85A, the piston 85B is advanced. At this time, the elastic body 85E contracts and the stroke is controlled by the nut 85G and the nut 85F. When the above-described operation is completed, the operation is performed after the hydraulic valve 85 is shut off to remove the hydraulic line. On the contrary, when the hydraulic valve 85 is opened, the piston 85B is retracted by the elasticity of the elastic body 85E. As you go, you'll be ready for the next task.

Since the disk 1 seated and fixed as described above is disassembled and assembled by performing a one-touch switch operation by the automatic repair device of the hot air flow stem 2, the above object can be achieved.

Therefore, according to the present invention, in order to improve the working efficiency and safety work in the work process of separating or assembling the disk from the stem for the periodic disk grinding process in order to reduce the sealing efficiency and prevent the malfunction caused by the deformation of the disk for repairing the hot blast furnace of the blast furnace factory. It is possible to realize additional effects such as preventing the damage and rework of parts by the conventional working method in advance, as well as abnormal wear of the equipment due to deformation and corrosion of stem and disk. By accurately inspecting the phenomena, it is possible to manage the history and predict the life of the facility.

The foregoing is merely illustrative of the preferred embodiments of the present invention and those skilled in the art to which the present invention pertains may make modifications and changes to the present invention without departing from the spirit and gist of the invention as set forth in the appended claims. It should be recognized.

Claims (4)

A device for disassembling and assembling a hot air balloon stem which is assembled to a hot air disk and fixed due to high heat, A fixed frame to which the hot air deflection stem is seated and fixed, A disk fixing means mounted on the fixing frame to fix the disk of the hot air side; A disassembly and assembly means mounted on the fixing frame to be spaced apart from the disk fixing means to fix and rotate the hot air deflection stem and move along the longitudinal direction of the hot air deflection stem, As the disassembly assembly means moves in a direction away from the hot air deflection disk while rotating the hot air deflection stem fixed to the disassembly disassembly means, the hot air deflection stem is separated from the hot air deflection disc. Disassembly and assembly of stems. The method of claim 1, The fixed frame is provided with a hydraulic unit unit, the disassembly and assembly means is a tapered sleeve is inserted into the hot air change stem and the screw portion is formed at both ends, a first tapered hexagon wrench in which the tapered sleeve is embedded; The first tapered hexagon wrench is inserted and mounted by a hydraulic wrench that is hydraulically operated by the hydraulic unit part, and both ends of the tapered sleeve are equipped with hydraulic hollow jacks that are hydraulically operated by the hydraulic unit part. Disassembly and assembly device for blast furnace hot air flow stem characterized in that. The method of claim 1, The fixed frame is a disassembly and assembly device for a blast furnace hot air shaft stem, characterized in that the inspection means for inspecting the wear and condition of the disk is decomposed hot air stem stem. The method of claim 3, Rotating disc is installed in the fixing frame of the lower part of the disc fixed by the disc fixing means, so that the rotating disc is appropriately rotated so that the wear and condition of the disc can be inspected by the inspection means after the hot air flow stem is disassembled Disassembly and assembly device for blast furnace hot air flow stem, characterized in that rotating at an angle.