KR100807574B1 - Apparatus for reserving the preceding slab and extracting the following slab in the heating furnace - Google Patents

Abstract

The present invention relates to an in-house holding device of a heating furnace extraction preceding atmospheric material for holding a material prior to heating and then extracting the material in the furnace according to the rolling conditions and extracting the material after the material is first heated in the furnace of the hot rolling mill. To this end, the present invention is composed of a hook drive motor 13 and the driving bogie 9 and the bogie driving motor 18 fixed on the traveling bogie 9 are installed on the upper surface of the heating furnace 1 symmetrically. To the material elevating unit 60 and the heating furnace 1 composed of a device drive unit 50, a plurality of L-shaped hooks 6 which are built in the drive cart 9 of the device drive unit 50 so as to be able to drive up and down. Heating furnace extraction, characterized in that the heating door door 70 is composed of an opening and closing door 31 which is opened and closed by the driving cylinder 36 by coupling the hinge 40 to a plurality of through-holes 30-1 formed. Provides an in-house hold of leading air. Thus, the present invention according to the present invention can significantly reduce the malfunction of the rolling mill by enabling the extraction of the following material, and can contribute to quality improvement by working with high-quality materials after the crown (rolling) of the rolling rolls, There is no need to secure a separate reheating time of the station charge material, thereby improving productivity.

Heating Furnace, L Type Fuku, Device Drive, Material Lift, Heating Furnace Door

Description

Reservoir holding device for preheating air extraction in the furnace {APPARATUS FOR RESERVING THE PRECEDING SLAB AND EXTRACTING THE FOLLOWING SLAB IN THE HEATING FURNACE}

1 is a configuration diagram of a furnace and a material extraction stage;

2 is a device installation diagram showing a state in which a furnace holding device of a furnace extraction preceding atmospheric material according to the present invention is mounted on a furnace;

3 is a perspective view and a cross-sectional view showing a drive unit and a material elevating unit constituting a furnace holding device of a furnace prior to extraction of a furnace according to the present invention;

4 is a perspective view and a cross-sectional view showing a furnace door part constituting a furnace holding device of a furnace extraction preceding atmospheric material according to the present invention;

5 is an operating state diagram showing an operating state in which the furnace holding device of the furnace extraction preceding atmospheric material according to the present invention elevates the preceding material inside the furnace.

♣ Explanation of symbols for main part of drawing ♣

9: Driving cart 13: Hook drive motor 18: Truck running motor 50: Device driving part

24: Hook case 6: L type hook 60: Material lifting part 31: opening and closing door

36: driving cylinder 70: heating door part

The present invention relates to a furnace holding device for preheating the extraction of the furnace, and more specifically, after heating the material (slab) in the heating furnace of the hot rolling mill, the characteristics of the material during the extraction (drawing out) and rolling conditions such as the dimensions of the product According to the present invention relates to a furnace holding device of the furnace extraction preceding atmospheric material for holding the preceding material in the furnace and extracting the trailing material first.

In general, in the hot rolling mill heating furnace 1, charging, heating, and extraction of materials are continuously performed. As shown in FIG. 1, the front of the extraction port 1-2 of the heating furnace 1 is shown. An extractor (2) is installed so that the extractor arm (2-1) enters the furnace (1), extracts the heated preceding material (3), and mounts it on a roll table (4), which is a material transfer facility. Work to transfer to the rolling process is continuously performed.

However, when the rolling process trouble occurs, the heating furnace 1 stops the extraction, reverses the trailing material 5 in the heating furnace 1, and reloads the material that can be re-rolled among the extracted materials. After reheating, trouble shooting of the rolling process or replacement of the rolling roll is carried out, and the extraction is carried out according to the extraction request in the rolling process. However, the current equipment can extract only the preceding material (3) in the furnace (1). If the rolling conditions (size-thickness, width of the component product of the material) are difficult to reach the heating temperature of the finished material and the other heating is difficult, it is changed and rolled to a size that is contrary to the demand of the customer, causing defects. have.

In other words, if the roll is cooled when the rolling line is stopped, the crown is changed, which may cause misprediction due to unpredictability of bending during rolling and generation of onions.

In order to solve the above problems, the present invention is the extraction of the preceding material (slab), which is waiting to be extracted in the heating furnace as necessary, after extracting and holding the following material in the heating furnace first to extract and roll the heating furnace to prevent the rolling process malfunction Its purpose is to provide an in-house hold for airborne materials.

In order to achieve the above object, the present invention is a hook drive motor 13 is fixed on the running cart 9, the bogie running motor 18 is fixed to the lower surface of the running cart 9, and Rack gear (11) is formed so as to gear coupling is composed of a support (7) which is fixed to one side of the heating door door 70, the device drive unit 50 is installed on the upper surface of the heating furnace (1) symmetrically; A hook case 24 fixed to the driving cart 9 of the device driving unit 50, an L-shaped hook 6 embedded in the guide roll 27 installed therein so as to be able to be driven up and down, and the hook driving motor A material lifting part which consists of rack gears 27-1 formed on the inner side of the L-shaped hook 6 so as to engage with the gear 13, and the plurality of L-shaped hooks 6 are fixed to each other by the fastening table 26. 60; A plurality of through holes 30-1 formed on an upper part of the heating furnace 1 directly below the L-shaped hook so that the L-shaped hook 6 of the material elevating part 60 can enter and exit, and the inside of the through hole. Opening and closing door 31 is a fireproof castable 41 is attached to the inner surface while the hinge 40 is coupled to one side of the rectangular case 30 installed on the circumferential surface, and the hinge 38 is coupled to the opening and closing door ( 31 is provided with a furnace holding device for heating furnace extraction preceding atmospheric material, characterized in that it is composed of a furnace door part 70 composed of a driving cylinder 36 for opening and closing operation.

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

2 is a device installation diagram showing a state in which the furnace retaining device of the furnace extraction preceding atmospheric material according to the present invention is mounted in the furnace, Figure 3 is a furnace retaining device of the furnace extraction preceding atmospheric material according to the present invention. It is a perspective view and sectional drawing which show the drive part and the raw material lifting part which comprise, and FIG. 4 is a perspective view and sectional view which shows the furnace door part which comprises the furnace holding apparatus of the furnace extraction preceding air | atmosphere material which concerns on this invention.

As shown in Fig. 2 to 4, the device driving unit 50 constituting the furnace holding device of the heating prior to extraction of the furnace according to the present invention is a hook drive motor 13, reducer 74, brake 15 In addition, the driving limit 9 on which the cam limit switch 16 and the pulse generator 17 are mounted, and the gear 10 is installed at the lower part thereof, and the gear 10 is provided in the gear 10. A trolley travel motor 18, a reducer 19, a cam limit switch 20, and a pulse generator 21 are mounted, and a guide roll 22 is coupled to a side of the traveling cart 9 to prevent separation. Rack gear (Rack Gear 11) for driving the driving gear gear 10 of the traveling cart 9 is engaged on the H-shaped support (7) fastened with a bolt (8) in the upper part of the heating furnace, Both ends of the rack gear 11 have a structure in which a stopper 12 is attached to prevent the driving cart 9 from being detached. The.

In addition, the material lifting unit 60 has a pinion gear 25 and an L-shaped hook inside a hook case 24 which is bolted to a fixture 23 connected to the left and right driving cart 9. Hook; 6) The rack gear (26) machined on the rear side is built-in, guide rolls (27) for preventing vibration during vertical operation of the rack gear (26) are mounted up and down before and after, and the L-shaped Upper and lower limit switches 28, 28-1) are provided for braking the excessive operation of the hook 26, and the L-shaped hook 26 is acute to prevent shaking or falling during the material (slab) hoisting. It is manufactured at an angle 29, and the fastening stand 26 is installed on the hook case 24 to prevent left and right vibration.

And, as shown in Figure 4, the furnace door portion 70 is made of a curved two-stage type to smooth the operation of the door in the rectangular case 30 formed on the upper portion of the furnace, Y-shaped stud ( A castable (41) with built-in stud (not shown) is constructed, and air spray nozzles (32) which prevent heat release when the door 31 is opened are embedded in all directions, and rod-shaped ceramics are disposed in the middle of each stage. It is installed by opening the upper part of the furnace body in the form of a seal (Ceramic Seal) 33,36.

The door 31 is welded and attached with a Y-shaped stud 35 to the steel door case 34, and then the castable 41 is constructed and manufactured in two stages of inverse conical shapes. ) Is built and processed, the door 31 and the case 30 is coupled to the hinge 40, the door 31 is operated by an air cylinder (36), at this time the smoothness of the door 31 For operation, the door fixing hinge 38 is made higher than the cylinder fixing hinge 37 so that the air cylinder 36 is inclined, and the heat limit switch 39 for detecting the opening of the door 31 is mounted.

Hereinafter, the operation of the present invention will be described in detail.

5 is an operating state diagram showing an operating state in which the furnace holding device of the furnace extraction preceding atmospheric material according to the present invention elevates the preceding material inside the furnace.

As shown in FIG. 5, if there is an extraction request after the roll replacement or trouble action of the post process, the rolling conditions of the preceding material 3 waiting to be extracted in the heating furnace 1 will be more difficult than the rolling conditions of the following material 5. In this case, the door 31 is opened by operating an air cylinder 36 of the door part 70 of the heating furnace, and when the heat-limiting switch 39 detects this, the hook driving motor 13 is operated to The L-shaped hook 6 of the elevating part 60 enters into the heating furnace. At this time, the pulse generator 17 mounted at the rear end of the hook driving motor 13 is the lowering distance of the L-shaped hook 6. The driver confirms this by transmitting the signal to the cab.                     

As described above, when the material elevating unit 60 enters the inside of the heating furnace 1 and approaches the material, the trolley traveling motor 18 of the device driving unit 50 of the present invention is activated to activate the L-shaped hook 6. ) Is pushed under the preceding material 3 and the hook driving motor 13 is driven again to raise the L-shaped hook 6, as shown in FIG. 5, the preceding material 3 is the heating furnace 1. Extraction is suspended inside, and the trailing material 5 is advanced so that the extractor 2 starts extraction. At this time, the moving position of the L-shaped hook 6 is confirmed by utilizing a camera (not shown) for monitoring the state of the conventional furnace.

Each of these operating distances can limit the forward distance by adjusting the cam limit switches 16 and 21, and after completion of each operation, the brake 15 of the hook driving motor 13 is operated to be fixed at the current position. do.

In the case of reverse loading, the preceding material 3 is lifted up in the same manner as described above and the trailing material 5 is retracted to secure space. Then, the material to be reverse loaded is completely reversed and then backed up. By reheating while extracting the preceding material, the heat emitted from the inside of the furnace when the door 31 is opened is offset by the air discharged through the air injection nozzle 32 built into the door case 30 It is blocked by the curtain (Air Curtain) effect, and when closed, the door 31 is designed in two stages and there is a ceramic seal 33 in the middle to prevent heat leakage.

As described above, the present invention can significantly reduce the trouble of the rolling mill by making it possible to extract only the preceding material when the material (slab) is extracted in the heating furnace, as necessary, also possible to extract the following material. High quality materials can be worked after crown formation, contributing to quality improvement, and there is no need to secure the reheating time of reverse charging material, thereby improving productivity.

Claims (8)

A hook drive motor 13 fixed on the traveling cart 9, a bogie traveling motor 18 fixed to the lower surface of the traveling cart 9, and a rack gear 11 are formed so as to be geared thereto. An apparatus driver 50 formed of a support 7 fixed to one side of the heating door door 70 and installed on the upper surface of the heating furnace 1 symmetrically; A hook case 24 fixed to the driving cart 9 of the device driving unit 50, an L-shaped hook 6 embedded in the guide roll 27 installed therein so as to be able to be driven up and down, and the hook driving motor A material lifting part which consists of rack gears 27-1 formed on the inner side of the L-shaped hook 6 so as to engage with the gear 13, and the plurality of L-shaped hooks 6 are fixed to each other by the fastening table 26. 60; A plurality of through holes 30-1 formed on an upper part of the heating furnace 1 in the moving direction of the L-shaped hook so that the L-shaped hook 6 of the material lifting unit 60 can enter and exit, An open / close door 31 having a fireproof castable 41 attached to an inner surface thereof while the hinge 40 is coupled to one side of the rectangular case 30 installed on the inner circumferential surface thereof, and the open / close door 31 is coupled to the hinge 38. A furnace holding device for heating furnace extraction preceding atmospheric material, characterized by comprising a furnace door part (70) comprising a driving cylinder (36) for opening and closing operation of (31). The method of claim 1, The device drive unit (50) is a furnace holding device for the extraction of the preceding furnace material, characterized in that it comprises a brake (15) is installed to the rear of the braking action of the hook drive motor (13). The method of claim 1, The device driving unit 50 is characterized in that it comprises a cam limit switch 20 and the pulse generator (17, 21) coupled to the rear shaft of the hook drive motor 13 and the balance driving motor (18). Furnace holding device of the leading air extraction extracted by the heating furnace. The method of claim 1, The apparatus driving unit (50) comprises a stopper (12) installed in the upper and lower portions of the rack gear (11) formed in the support (7). The method of claim 1, The material elevating unit (60) is a holding angle of the furnace prior to extraction of the furnace, characterized in that the bending angle of the L-shaped hook (6) is an acute angle of less than 90 degrees to prevent shaking or falling during the hoisting of the material. The method of claim 1, The material elevating unit 60 includes a upper and lower limit switch 28 that is installed to control the vertical driving position of the L-shaped hook (6) in the furnace of the furnace prior to extraction Holding device. The method of claim 1, The furnace door part 70 includes a plurality of through holes 30-1 formed on the furnace 1 and ceramic seals 33 and 36 inserted into and installed at the contact portion of the opening / closing door 31. A furnace holding device for heating furnace extraction preceding atmospheric material, characterized in that configured. The method of claim 1, The heating door door 70 is a heating characterized in that a plurality of air spray nozzles 32 for blocking the heat is installed on the inner wall of the plurality of through holes 30-1 formed on the heating furnace (1) Furnace holding device for furnace extraction leading air.

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