阅读说明：本技术 一种用于狭小空间的紧凑型转炉修炉装置 (Compact converter repairing device for narrow space ) 是由 廖坤明 张文 吴鹏飞 张愉 葛君生 于 2020-06-05 设计创作，主要内容包括：本发明公开了一种用于狭小空间的紧凑型转炉修炉装置,包括紧凑型修炉台架、修炉平台、台架锁紧装置、高低轨式修炉台车、吊装电葫芦、输送托辊和爬梯,高低轨式修炉台车布置于转炉炉壳的上方,紧凑型修炉台架的上端通过台架锁紧装置与高低轨式修炉台车的下部连接,紧凑型修炉台架的下端伸入转炉炉壳内与修炉平台拼接,吊装电葫芦和输送托辊分别布置于高低轨式修炉台车的车架上部和下部,爬梯设置于紧凑型修炉台架上,爬梯的下端伸入转炉炉壳内。本发明结构简单、紧凑实用、占用空间小,机械化程度高,操作简单,安装与拆卸方便,投资低,尤其适用于空间受限的转炉修砌炉装置。(The invention discloses a compact converter repairing device for a narrow space, which comprises a compact converter repairing rack, a converter repairing platform, a rack locking device, a high-low rail type converter repairing trolley, a hoisting electric hoist, a conveying carrier roller and a ladder stand. The device has the advantages of simple structure, compactness, practicability, small occupied space, high degree of mechanization, simple operation, convenient installation and disassembly and low investment, and is particularly suitable for a converter repairing and building furnace device with limited space.)

1. The utility model provides a compact converter repair stove device for narrow and small space, a serial communication port, repair the stove rack including the compact, repair the stove platform, rack locking device, the stove platform is repaiied to the high low rail formula, hoist and mount electric hoist, carry bearing roller and cat ladder, the stove platform is repaiied to the high low rail formula is arranged in the top of converter stove outer covering, the compact is repaiied the lower part connection of stove platform through rack locking device and high low rail formula to the upper end of stove rack, the compact is repaiied the lower extreme of stove rack and is stretched into in the converter and repair the stove platform concatenation, hoist and mount electric hoist and carry bearing roller and arrange respectively in the frame upper portion and the lower part of high low rail formula repair stove platform, the cat ladder sets up on the compact is repaiied the stove rack, the lower extreme of cat ladder stretches into in the converter stove outer covering.

2. The compact converter repairing device for the narrow space according to claim 1, wherein the high-low rail type furnace repairing trolley comprises an upper frame, a lower frame, a furnace rear wheel set and a furnace front wheel set, the upper frame is arranged at the upper end of the lower frame and connected through a fastener to form a frame together, the furnace rear wheel set and the furnace front wheel set are respectively arranged at the rear end and the front end of the frame, the hoisting electric hoist is arranged on the upper frame, and the conveying carrier roller is arranged on the lower frame.

3. The compact converter repairing device for the narrow space of the claim 1, wherein the compact furnace repairing rack comprises a plurality of furnace repairing supports which are spliced end to end, and the adjacent furnace repairing supports are connected through a connecting component.

4. The compact converter repairing device for narrow spaces according to claim 3, wherein the connecting assembly comprises a mounting sleeve, an inserting shaft and a pin shaft, the mounting sleeve and the inserting shaft are respectively arranged at the lower end of the upper furnace repairing support and the upper end of the lower furnace repairing support in the two adjacent furnace repairing supports, the side parts of the mounting sleeve and the inserting shaft are respectively provided with a through pin hole, the inserting shaft is inserted into the mounting sleeve, and the pin shaft sequentially penetrates into the through pin holes of the mounting sleeve and the inserting shaft, so that the adjacent furnace repairing supports are connected.

5. The compact converter repairing device for the narrow space as claimed in claim 1, wherein the rack locking device comprises a support frame, a rotating shaft, a rotating arm and a positioning pin, the support frame is arranged at the lower part of the high-low rail type furnace repairing trolley, the rotating arm is connected with the compact furnace repairing rack through the rotating shaft, and the rotating arm rotates to the support frame around the rotating shaft and is in locking connection with the support frame through the positioning pin.

6. The compact converter repairing device for the narrow space as claimed in claim 5, wherein 4 rack locking devices are connected between the compact repairing rack and the high-low rail type repairing trolley.

7. The compact converter repairing device for the small space as claimed in claim 1, wherein the repairing platform comprises a plurality of extension platforms which are spliced with each other.

8. The compact converter repairing device for the narrow space according to claim 7, wherein the extending platforms are arc-shaped, the arc-shaped extending platforms are spliced with each other to form a circular furnace repairing platform, and the adjacent extending platforms and the furnace repairing support are connected through splicing components.

9. The compact converter repairing device for the narrow space as claimed in claim 1, further comprising a smoke hood trolley, wherein the smoke hood trolley is arranged on one side of the high-low rail type repairing trolley and is located above the converter shell.

10. The compact converter repairing device for the small space according to claim 9, wherein the hood trolley and the high-low rail type repairing trolley are driven to move transversely together.

Technical Field

The invention relates to the technical field of metallurgical equipment, in particular to a compact converter repairing device for a narrow space.

Background

The converter repairing device has important influences on the service time of the converter, equipment investment, labor intensity of workers, working efficiency and the like.

The method of repairing the converter is generally divided into an upper furnace repairing method and a lower furnace repairing method according to different furnace type structures. In the small-sized converter designed in China at an early stage, a lower repair method is mainly adopted, so that the design requirement on the converter is higher, the design of a converter body is more complex, the service life of the converter body is shorter than that of an integral type, and the investment is larger. In order to prolong the service period of converter equipment, a furnace maintenance mode of upper maintenance is generally adopted in a furnace maintenance system of the converter at present.

The currently used method for repairing the furnace mainly comprises simple repairing and furnace tower repairing, the simple repairing mainly comprises manual operation of workers,

and (3) building a scaffold in the furnace shell, hoisting and transporting furnace lining bricks into the furnace shell by using a crown block of a converter bay, and then manually repairing the furnace lining. The furnace building mode has the advantages of severe working environment, high labor intensity and low efficiency; the furnace repairing tower top repairing method is introduced from foreign countries in the early stage, a set of special equipment is adopted to repair the furnace tower, so that refractory material transportation and constructors in the furnace repairing tower can conveniently get in and out of the furnace body, the method has the characteristics of high mechanization degree, large occupied space, complex equipment, difficult installation and disassembly, high investment and maintenance cost, and the use of the furnace repairing tower top repairing method is often limited for the converter limited by space and investment.

Disclosure of Invention

The invention aims to solve the technical problem of providing a compact converter repairing device for a narrow space, which has the advantages of simple structure, compactness, practicability, small occupied space, high mechanization degree, simple operation, convenient installation and disassembly and low investment and is particularly suitable for a converter repairing and building device with limited space.

The technical scheme adopted by the invention for solving the technical problems is as follows:

the utility model provides a compact converter repair stove device for narrow and small space, repair the stove rack including the compact, repair the stove platform, rack locking device, the stove platform truck is repaiied to the high low rail formula, hoist and mount electric hoist, carry bearing roller and cat ladder, the stove platform truck is repaiied to the high low rail formula is arranged in the top of converter stove shell, the compact is repaired the lower part connection of stove platform truck is repaiied through rack locking device and high low rail formula in the upper end of stove rack, the compact is repaired the lower extreme of stove rack and is stretched into in the converter stove outer covering and repair the concatenation of stove platform, hoist and mount electric hoist and carry the bearing roller and arrange respectively in the frame upper portion and the lower part that the stove platform truck was repaiied to the high low rail formula, the cat ladder sets up on the compact is repaired the stove rack, the lower extreme of cat.

According to the technical scheme, the furnace repairing trolley comprises an upper frame, a lower frame, a furnace rear wheel set and a furnace front wheel set, wherein the upper frame is arranged at the upper end of the lower frame and is connected through a fastener to form a frame together, the furnace rear wheel set and the furnace front wheel set are respectively arranged at the rear end and the front end of the frame, a hoisting electric hoist is arranged on the upper frame, and a conveying carrier roller is arranged on the lower frame.

According to the technical scheme, the compact furnace repairing rack comprises a plurality of furnace repairing supports which are spliced end to end, and adjacent furnace repairing supports are connected through the connecting assembly.

According to the technical scheme, the connecting assembly comprises the mounting sleeve, the second inserting shaft and the pin shaft, the mounting sleeve and the second inserting shaft are respectively arranged at the lower end of the furnace support and the upper end of the furnace support below the furnace support in the two adjacent furnace support repairing supports, the side portions of the mounting sleeve and the second inserting shaft are respectively provided with the pin penetrating hole, the second inserting shaft is inserted into the mounting sleeve, and the pin shaft sequentially penetrates into the pin penetrating holes of the mounting sleeve and the second inserting shaft to enable the two adjacent furnace support repairing supports to be connected.

According to the technical scheme, the rack locking device comprises a support frame, a rotating shaft, a rotating arm and a positioning pin, the support frame is arranged at the lower part of the high-low rail type furnace repairing trolley, the rotating arm is connected with the compact furnace repairing rack through the rotating shaft, and the rotating arm rotates to the support frame around the rotating shaft and is connected with the support frame in a locking mode through the positioning pin.

According to the technical scheme, 4 rack locking devices are connected between the compact type furnace repairing rack and the high-low rail type furnace repairing trolley.

According to the technical scheme, the furnace repairing platform comprises a plurality of mutually spliced extension platforms.

According to the technical scheme, the extension platforms are arc-shaped, the arc-shaped extension platforms are mutually spliced to form a circular furnace repairing platform, and the adjacent extension platforms and the furnace repairing support are connected through the splicing assembly.

According to the technical scheme, the compact converter repairing device for the narrow space further comprises a smoke hood trolley, and the smoke hood trolley is arranged on one side of the high-low rail type furnace repairing trolley and located above a converter shell.

According to the technical scheme, the smoke hood trolley and the high-low rail type furnace repairing trolley are driven to transversely move together.

The invention has the following beneficial effects:

the compact converter repairing device has the characteristics of compact equipment structure, high mechanization degree, convenient installation and disassembly and the like, has complete functions and high furnace repairing efficiency, can effectively shorten the furnace building time, reduces the labor intensity of operators, can reduce the occupied space of the whole set of furnace repairing equipment to the maximum extent, is particularly suitable for converter process arrangement in narrow space, runs reliably, is economic and practical, and has good application value.

Drawings

FIG. 1 is a schematic structural view of a compact converter repairing apparatus for a narrow space according to an embodiment of the present invention;

FIG. 2 is a top view of FIG. 1;

FIG. 3 is a schematic structural view of a connecting assembly in an embodiment of the present invention;

FIG. 4 is a schematic structural diagram of a furnace repairing platform according to an embodiment of the present invention;

FIG. 5 is a schematic structural diagram of a splice assembly in an embodiment of the present invention;

FIG. 6 is a schematic view of the structure of a locking device for a gantry in an embodiment of the present invention;

in the figure, 1-forklift; 2-refractory material; 3-repairing the furnace trolley in a high-low rail type; 4-a rear furnace wheel group; 5-an upper frame; 6-electric hoist running track; 7-a lower frame; 8-conveyor rollers; 9-hoisting the electric hoist; 10-a hook; 11-a front furnace wheel group; 12-a connecting fastener; 13-a gantry locking device; 14-compact furnace repairing rack; 15-a first repair furnace support; 16-a second repair furnace support; 17-a third furnace repairing bracket; 18-a fourth furnace repairing support; 19-repairing the furnace bracket; 20-repairing the furnace platform; 21-locking the pin shaft; 22-a transport carriage; 23-a first extension platform; 24-a second extension platform; 25-a third extension stage; 26-building a well-built refractory material; 27-converter shell; 28-a first insertion shaft; 29-a support seat; 30-locking bolts; 31-mounting the sleeve; 32-a second insertion shaft; 33-a pin shaft; 34-a clamping plate; 35-a hood trolley; 36-a movable smoke hood; 37-a support frame; 38-a rotating shaft; 39-swivel arm; 40-positioning pins; 41-climbing ladder.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings and examples.

Referring to fig. 1 to 6, the compact converter repairing device for a narrow space in one embodiment of the present invention includes a compact converter repairing rack 14, a converter repairing platform 20, a rack locking device 13, a high-low rail type converter repairing rack 3, a hoisting electric hoist 9, a conveying idler 8 and a ladder 41, wherein the high-low rail type converter repairing rack 3 is disposed above a converter shell 27, the upper end of the compact converter repairing rack 14 is connected with the lower portion of the high-low rail type converter repairing rack 3 through the rack locking device 13, the lower end of the compact converter repairing rack 14 extends into the converter shell 27 and is spliced with the converter repairing platform, the hoisting electric hoist and the conveying idler are respectively disposed on the upper portion and the lower portion of the frame of the high-low rail type converter repairing rack 3, the ladder 41 is disposed on the compact converter repairing rack 14, and the lower end of the ladder 41 extends into the converter shell 27 along with the compact converter repairing rack 14.

Further, the high-low rail type furnace repairing trolley 3 comprises an upper frame 5, a lower frame 7, a furnace rear wheel set 4 and a furnace front wheel set 11, wherein the upper frame 5 is arranged at the upper end of the lower frame 7 and connected through a fastener to form a frame together, the furnace rear wheel set 4 and the furnace front wheel set 11 are respectively arranged at the rear end and the front end of the frame, a hoisting electric hoist is arranged on the upper frame 5, and a conveying carrier roller is arranged on the lower frame 7; the rear side and the front side of the frame are respectively provided with a guide rail, the furnace rear wheel set 4 and the furnace front wheel set 11 are respectively erected on the guide rails at the rear side and the front side, and the frame can move back and forth along the guide rails.

Further, the compact furnace repairing rack 14 comprises a plurality of furnace repairing supports which are spliced end to end, and adjacent furnace repairing supports are connected through a connecting assembly.

Further, coupling assembling includes that installation sleeve 31, second insert axle 32 and round pin axle 33, installation sleeve 31 and second insert axle 32 set up respectively in two adjacent stove supports are repaiied the lower extreme of stove support and the upper end of stove support is repaiied to the below in the upper side, the lateral part that installation sleeve 31 and second inserted axle 32 all is equipped with the pinhole, the second inserts in axle 32 inserts installation sleeve 31, round pin axle 33 penetrates in the pinhole of wearing of installation sleeve 31 and second inserted axle 32 in proper order, make adjacent stove support connection of repairing.

Furthermore, the number of the furnace repairing supports is 5, and the furnace repairing supports are respectively a first furnace repairing support 15, a second furnace repairing support 16, a third furnace repairing support 17, a fourth furnace repairing support 18 and a fifth furnace repairing support 19.

Further, the rack locking device 13 comprises a support frame 37, a rotating shaft 38, a rotating arm 39 and a positioning pin 40, the support frame 37 is arranged at the lower part of the high-low rail type furnace repairing trolley 3, the rotating arm 39 is connected with the compact furnace repairing rack 14 through the rotating shaft 38, and the rotating arm 39 rotates to the support frame 37 around the rotating shaft 38 and is in locking connection with the support frame 37 through the positioning pin 40.

Further, 4 rack locking devices 13 are connected between the compact furnace repairing rack 14 and the high-low rail type furnace repairing trolley 3.

Further, the furnace repairing platform 20 comprises a plurality of mutually spliced extension platforms.

Further, the extension platforms are arc-shaped, the arc-shaped extension platforms are mutually spliced to form a circular furnace repairing platform, and the adjacent extension platforms and the furnace repairing support are connected through splicing assemblies.

Further, the splicing assembly comprises a first inserting shaft 28, a supporting seat 29 and a locking bolt 30, the first inserting shaft 28 and the supporting seat 29 are respectively arranged on two adjacent extension platforms, the first inserting shaft 28 is inserted into the supporting seat 29, the adjacent extension platforms are connected and positioned, and the adjacent extension platforms are connected through the locking bolt 30.

Furthermore, the plurality of extension platforms are respectively a first extension platform, a second extension platform and a third extension platform which are connected in sequence, and the first extension platform is connected with a fifth furnace repairing support at the lowest end.

The height rail formula repair stove platform truck 3 receive converter stove outer covering 27 upper portion space height restriction, repair stove platform truck 3 design for the height rail form with the height rail formula, the stove rear direction leaves the high space of sufficient transport resistant material for fork truck 1, furnace front direction wheel group 11 then reduces the rail surface elevation as far as possible, repair the space of stove platform truck 3 upper portion and leave sufficient structure roof beam or installation other equipment for the height rail formula.

Further, the repairing and hoisting electric hoist 9 is installed on the upper rail 6 of the high-low rail type furnace repairing trolley 3 and used for receiving the refractory material 2 on the forklift 1 and transporting the refractory material to the furnace repairing platform 20 in the furnace shell 27.

Further, the compact converter repairing device for the narrow space further comprises a smoke hood trolley 35, and the smoke hood trolley 35 is arranged on one side of the high-low rail type furnace repairing trolley 3 and located above the converter shell 27.

Further, the hood trolley 35 and the high-low rail type furnace repairing trolley 3 drive the high-low rail type furnace repairing trolley 3 to move transversely together.

In an embodiment of the invention, as shown in fig. 1, a compact converter repairing device for a narrow space comprises a high-low rail type furnace repairing trolley 3, a conveyor roller 8, a hoisting electric hoist 9, a compact furnace repairing rack 14, a furnace repairing rack locking device 13, a furnace repairing platform 20, a first extending platform 23, a second extending platform 24, a third extending platform 25 and the like.

Furnace platform truck 3 is repaiied to height rail formula, repair furnace platform truck upper portion frame 5 by height rail formula, furnace platform truck lower part frame 7 is repaiied to height rail formula, furnace back wheel group 4, furnace front wheel group 11, electric hoist orbit 6, conveyer roller 8 constitutes, receive converter stove outer covering 27 upper portion space height restriction, repair furnace platform truck 3 design for height rail formula, the direction of furnace back reserves the high space of sufficient fortune resistant material for fork truck 1, furnace front direction wheel group 11 then reduces the rail surface elevation as far as possible, repair furnace platform truck 3 upper portion for height rail formula and reserve the space of sufficient structure roof beam or installation other equipment. The upper frame 5 of the high-low rail type furnace repairing trolley and the lower frame 7 of the high-low rail type furnace repairing trolley are connected through a connecting fastener 12; a square hole is formed above the furnace opening of the lower frame 7 and is used for the components of the compact furnace repairing rack 14 to enter and exit; the conveyor roller 8 is arranged on the lower frame 7 of the high-low rail type furnace repairing trolley and used for conveying refractory materials.

Referring to fig. 4, the furnace repairing platform 20 is connected to the first extending platform 23, the second extending platform 24 and the third extending platform 25 in sequence by the fifth furnace repairing bracket 19 to form a large circular furnace building working platform. Because the diameter of the furnace mouth is smaller than that of the furnace body, when the furnace repairing platform 20 enters the furnace from the furnace mouth, the diameter of the masonry platform disc is smaller than that of the furnace mouth, and the masonry platform required in the furnace is larger than that of the furnace mouth. The first extending platform 23 is provided with an inserting shaft 28, the fifth furnace repairing support 19 is provided with a support seat 29, an opening is formed in the support seat 29 and used for installing the inserting shaft 28, the first extending platform 23 is inserted into the support seat 29 on the fifth furnace repairing support 19 through the inserting shaft 28 and then is fixed by a locking bolt 30, and the extending platforms are sequentially connected in this way to form the furnace repairing working platform 20.

The compact furnace repairing rack 14 is formed by connecting a first furnace repairing support 15, a second furnace repairing support 16, a third furnace repairing support 17, a fourth furnace repairing support 18 and a furnace repairing bracket 19. The compact furnace repairing rack 14 is fixed on the lower frame 7 of the high-low rail type furnace repairing trolley 3 through four sets of rack locking devices 13, and when the four sets of rack locking devices 13 are in an open state, all components of the furnace repairing rack 14 can be sequentially hoisted by the hoisting electric hoist 9 to enter and exit the furnace body; when the four sets of rack locking devices 13 are in a locking state, the furnace repairing rack 14 can be supported on the lower frame 7.

In combination with a compact converter repairing device plane layout diagram shown in fig. 2, a high-low rail type furnace repairing trolley 3 is connected to a smoke hood trolley 35 and driven by the smoke hood trolley 35, and when a converter needs to be repaired, the smoke hood trolley 35 carrying a movable smoke hood 36 is moved away, so that the high-low rail type furnace repairing trolley 3 is positioned right above a converter shell.

Referring to fig. 2 and 6, the furnace repairing rack locking device 13 is composed of a support frame 37, a rotating shaft 38, a rotating arm 39 and a positioning pin 40, wherein the rotating shaft 38 is installed on the support frame 37 at the lower part of the high-low rail type furnace repairing trolley 3, and the rotating arm 39 is installed on the rotating shaft 38 and can rotate around the rotating shaft 38. When the four groups of rack locking devices 13 are in an open state, all the components of the furnace repairing rack 14 can be lifted in and out of the furnace body by the lifting electric hoist 9 in sequence; when the furnace repairing rack 14 is assembled in the furnace shell 27, the rotating arms 39 of the four sets of rack locking devices 13 are pushed to be in a locking state, so that the furnace repairing rack 14 is supported on the lower frame 7 of the high-low rail type furnace repairing trolley 3 through the four sets of rack locking devices.

As shown in fig. 3, the furnace repairing supports are schematically spliced, and four corners of the lower part of the first furnace repairing support 15 are provided with mounting sleeves 31, and are provided with holes for mounting pins 33. Four corners at the upper part of the second furnace repairing support 16 are provided with inserting shafts 32, and holes are formed for installing pin shafts 33; the furnace repairing support 1 is hung by the hoisting electric hoist 9 and is lowered downwards, so that the mounting sleeves 31 at four corners of the lower part of the second furnace repairing support 15 fall into the inserting shafts 32 at four corners of the upper part of the second furnace repairing support 16, then the pin shaft 33 penetrates through the mounting sleeves 31 and the inserting shafts 32 to form holes, and then the pin shaft 33 is fixed by the clamping plate, so that the first furnace repairing support 15 and the second furnace repairing support 16 are connected into a whole, the connection among the furnace repairing supports is connected in the mode, and the first furnace repairing support 15, the second furnace repairing support 16, the third furnace repairing support 17, the fourth furnace repairing support 18 and the furnace repairing support 19 are connected into a set of compact furnace repairing rack 14. In addition, a ladder 41 is arranged on the furnace repairing rack 14 and used for workers to enter and exit the furnace shell.

The operation process of the compact converter repairing device is as follows: (1) when the converter needs to be repaired, the smoke hood trolley 35 carrying the movable smoke hood 36 is moved away, so that the high-low rail type furnace repairing trolley 3 is positioned right above the converter shell; (2) hoisting an electric hoist 9 is adopted to hoist the first stretching platform 23, the second stretching platform 24, the third stretching platform 25 and the like into the furnace shell 27 in advance; (3) the hoisting electric hoist 9 is connected with a furnace repairing bracket 19 which is forked into the crane 1, and the furnace repairing bracket 19 is hoisted to enter the bottom of the furnace shell 27 and is temporarily supported and fixed; (4) hoisting an electric hoist 9 to hoist a fourth furnace repairing support 18, a third furnace repairing support 17, a second furnace repairing support 16 and a first furnace repairing support 15 into a furnace shell 27 in sequence, and installing the electric hoist into a compact furnace repairing rack 14; (5) sequentially mounting a first stretching platform 23, a second stretching platform 24 and a third stretching platform 25 with the furnace repairing bracket 19 to form a furnace repairing platform 20, and then hoisting a conveying bracket 22 to the furnace repairing platform 20; (6) the rotating arms 39 of the four groups of rack locking devices 13 are pushed to be in a locking state, so that the furnace repairing rack 14 is supported on the lower frame 7 of the high-low rail type furnace repairing trolley 3 through the four groups of rack locking devices; (7) hoisting the refractory material and the tools into the furnace repairing platform 20 in sequence by hoisting the electric hoist 9, and then building a furnace at the bottom of the furnace shell 27 by workers; (8) after building to a preset height, opening the rotating arms 39 of the four groups of rack locking devices 13, moving the furnace repairing bracket 14 together with the furnace repairing platform 20 upwards by adopting a hoisting electric hoist 9, locking the rotating arms 39 of the four groups of rack locking devices 13, supporting the furnace repairing rack 14 on the lower frame 7 of the high-low rail type furnace repairing trolley 3, and then removing the first furnace repairing support 15; (9) continuously building refractory materials in the blast furnace according to the step (8), moving the furnace bracket 14 upwards together with the furnace repairing platform 20, and sequentially removing a second furnace repairing support, a third furnace repairing support and a fourth furnace repairing support; (10) after the repair period is finished, the first extension platform 23, the second extension platform 24 and the third extension platform 25 are detached from the repair bracket 19, and then the furnace shells 27 are hoisted in sequence; (11) the fume hood trolley 35 moves in to drive the high-low rail type furnace repairing trolley 3 to recover the production state of the converter, and the finishing, reforming and repairing work is finished.

The above is only a preferred embodiment of the present invention, and certainly, the scope of the present invention should not be limited thereby, and therefore, the present invention is not limited by the scope of the claims.