CN105108396A - Blast furnace shell outer wall welding platform and erecting method thereof - Google Patents

Blast furnace shell outer wall welding platform and erecting method thereof Download PDF

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Publication number
CN105108396A
CN105108396A CN201510628654.3A CN201510628654A CN105108396A CN 105108396 A CN105108396 A CN 105108396A CN 201510628654 A CN201510628654 A CN 201510628654A CN 105108396 A CN105108396 A CN 105108396A
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China
Prior art keywords
jig
furnace shell
girder
ring
welding
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CN201510628654.3A
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CN105108396B (en
Inventor
田一堂
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Wuhan Yiye Steel Structure Co Ltd
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Wuhan Yiye Steel Structure Co Ltd
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K37/00Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K31/00Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups
    • B23K31/02Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups relating to soldering or welding
    • B23K31/022Making profiled bars with soldered or welded seams
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66DCAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
    • B66D1/00Rope, cable, or chain winding mechanisms; Capstans

Abstract

The invention provides a blast furnace shell outer wall welding platform which comprises an annular platform body. A telescopic device is connected to the inner edge of the platform body, and the telescopic device can stretch and contract in the radial direction of the platform body. The platform body comprises an inner ring, an outer ring and a plurality of main beams radiating towards the outer ring from the inner ring, the number of the main beams is at least four, every two adjacent main beams are connected through a secondary beam, and an operation panel is laid between every two adjacent main beams. The telescopic device comprises a sliding rail connected with the main beams in a sliding mode, and the sliding rail can slide in the length direction of the main beams. The invention further provides an erecting method for the blast furnace shell outer wall welding platform. According to the blast furnace shell outer wall welding platform and the erecting method for the blast furnace shell outer wall welding platform, welding areas in the positions, with different diameters, of the outer wall of a furnace shell can be welded by adjusting the diameter sizes of the welding platform through the telescopic device, the requirement for welding of the outer wall of the whole furnace shell can be met without erecting the welding platform again, a large amount of time for erecting the welding platform is saved, the labor intensity is lowered, the construction cost is greatly reduced, and significance is achieved in practical engineering.

Description

A kind of last furnace shell outer wall jig and erection method thereof
Technical field
The present invention relates to last furnace shell welding technology field, be specifically related to a kind of last furnace shell outer wall jig and erection method thereof.
Background technology
In the welding process of last furnace shell outer wall, the welding job amount of operating personnel is comparatively large, and jig set up and operating personnel's welding is all high-altitude application, there is larger potential safety hazard; In prior art, putting up platform form is often with and must be again set up separately, also needs to remove after furnace shell outer wall has welded, spended time, waste building materials, potential safety hazard is very big again, and the platform set up is simpler and cruder, workmen is inconvenient operation on platform, also dangerous.Therefore, be necessary to improve prior art.
Summary of the invention
Technical problem to be solved by this invention is, for the deficiencies in the prior art, and the last furnace shell outer wall jig meeting the welding requirements of whole furnace shell outer wall providing a kind of good reliability, stability high and erection method thereof.
The technical solution used in the present invention is: a kind of last furnace shell outer wall jig, and comprise the main platform body of annular, the inside edge of main platform body is connected with retractor device, and retractor device can to the radial expansion of main platform body.
By such scheme, described main platform body comprises inner ring, outer ring, and by the some girders of inner ring to outer ring radiation, girder is no less than four, is connected between adjacent two girders by secondary beam; Lay-up operation panel between adjacent two girders.
By such scheme, described retractor device comprises the slide rail be slidably connected with girder, and slide rail can slide along the length direction of girder; The part that slide rail stretches out edge in main platform body lays ring surface plate; Girder is installed on the positioner for slide rail of positioning slide.
By such scheme, described girder comprises two opposing channel-section steels, forms the gap communicated up and down, be provided with the contiguous block of connection two channel-section steels in the bottom in gap between two channel-section steels; The top of two channel-section steels is equipped with girder panel; Two channel-section steels are connected with girder panel by contiguous block.
By such scheme, each installation of difference one group of wheel shaft on two channel-section steels of girder, two groups of wheel shafts are relatively arranged in the gap of two channel-section steels, and described slide rail is installed between two groups of wheel shafts, can slide between two groups of wheel shafts.
By such scheme, main platform body is installed on from lifting device, comprises from lifting device the hoist engine be installed on elevator support, the symmetrical interval of elevator support is arranged on girder.
By such scheme, be positioned at girder one end at slide rail and be provided with block, one end that slide rail stretches out girder is provided with lever.
Present invention also offers a kind of last furnace shell outer wall jig erection method, the method comprises following step:
Step one, according to the welding requirements of last furnace shell outer wall and the size of furnace shell external diameter, design and produce the jig of suitable dimension, hoist engine spaced on jig is one group, and the hanger that circumference welding is corresponding with each hoist engine respectively in the corresponding height of each welding region of furnace shell outer wall;
Step 2, fixed pulley, steel wire rope and snap ring is utilized correspondingly with the hanger of a certain welding region of furnace shell outer wall respectively to be connected by the hoist engine with group;
Step 3, startup are with the hoist engine organized, and movable welding platform, to the corresponding position of its jig of this welding region, stops hoist engine, welds the weld seam of this welding region;
After step 4, this welding region have welded, connect another group hoist engine hanger corresponding with it and open this group hoist engine, upper one group of hoist engine is dismantled from the hanger of its correspondence, preparing the welding carrying out next welding region:
Step 5, repetition step 3 and step 4, after treating that the weld seam of furnace shell outer wall welds completely, winch to ground by jig and dismantle.
By such scheme, described jig comprises the main platform body of annular, and the inside edge of main platform body is connected with retractor device, and retractor device can along the radial expansion of main platform body; Described main platform body comprises inner ring, outer ring, and by the some girders of inner ring to outer ring radiation, girder is no less than four, is connected between adjacent two girders by secondary beam; Lay-up operation panel between adjacent two girders.
By such scheme, in step 4, if the diameter of its jig position of next welding region is less than the diameter of its jig position of a welding region, then first the annular panel that jig exceeds is removed, again the annular panel of remainder is sling, to jig center shifting sledge to not affecting the lifting of jig, then annular slab is laid on slide rail; If the diameter of its jig position of next welding region is greater than the diameter of its jig position of a welding region, then first jig is promoted to the position that its jig of next welding region should be located, the annular panel that jig has spread is hung in recurrence, slide rail is shifted out jig near furnace shell outer wall, then on slide rail, lay ring surface plate.
Beneficial effect of the present invention is:
The main platform body of the annular 1, be made up of inner ring, outer ring, girder and secondary beam, its structure defines stable space general frame, the version of this integration greatly strengthen the strength and stability of jig, fully ensure that the safety of operator, substantially increase stability and the reliability of jig;
2, by the diameter of retractor device adjustment jig, welding operation can be carried out to the welding region at furnace shell outer wall different-diameter place, the welding requirements of whole furnace shell outer wall can be met without the need to again setting up jig again, save the time of setting up jig in a large number, alleviate labour intensity, greatly reduce construction cost, significant in Practical Project;
3, two groups of spaced setting from lifting device, achieves the flexible switching of jig in different welding region, substantially increases welding efficiency, ensure that welding quality;
4, the present invention's pair structure its outer wall similar with last furnace shell weld all applicable.
Accompanying drawing explanation
Fig. 1 is the structural representation of a specific embodiment in the present invention.
Fig. 2 is the structural representation of main platform body and retractor device in the present embodiment.
Fig. 3 is the connection diagram of the present embodiment middle girder and slide rail.
Fig. 4 is the connection diagram of slide rail and block in the present embodiment.
Fig. 5 is positioner for slide rail schematic diagram in the present embodiment.
Fig. 6 is the top view of Fig. 5.
Fig. 7 is the connection diagram of two annular panels in the present embodiment.
Fig. 8 is the top view of Fig. 7.
Fig. 9 is last furnace shell outer wall welding process schematic diagram in the present embodiment.
Figure 10 is A place enlarged drawing in Fig. 9.
Wherein: 1, inner ring; 2, guidance panel; 3, girder panel; 4, annular panel; 5, positioner for slide rail; 5-1, bolt; 5-2, holder; 5-3, pressing plate; 5-4, rubber blanket; 6, contiguous block; 7, slide rail; 8, secondary beam; 9, girder; 9-1, channel-section steel (9-1a, 9-1b); 10, outer ring; 11, wheel shaft; 12, block; 13, hoist engine; 14, elevator support; 15, chain block; 16, steel wire rope; 17, hanger; 18, furnace shell; 19, pin; 20, annular connecting plate; 21, fixed pulley; 22, snap ring; 23, fence.
Detailed description of the invention
In order to understand the present invention better, below in conjunction with the drawings and specific embodiments, the present invention is further described.
A kind of last furnace shell outer wall jig as shown in Figure 1-2, comprise the main platform body of annular and be connected to the retractor device on edge in main platform body, retractor device can along the radial expansion of main platform body; Main platform body is installed on from lifting device; Main platform body comprises inner ring 1, outer ring 10(inner ring 1 and outer ring 10 and makes arc by plurality of steel plates roller and be formed by connecting), and by the some girders 9 of inner ring 1 to outer ring 10 radiation, girder 9 is no less than four, the present embodiment adopts eight girders 9, girder 9 two ends are all welded with girder connecting plate, and girder connecting plate is connected with inner ring 1 and outer ring 10 respectively by bolt; Connected by secondary beam 8 between adjacent two girders 9 and support (secondary beam 8 is made up of channel-section steel, and at the two ends of secondary beam 8 welding secondary beam connecting plate, secondary beam connecting plate is connected with girder 9 respectively by bolt); Inner ring 1, outer ring 10, girder 9 and secondary beam 8 constitute stable space general frame, and the version of this integration greatly strengthen the intensity of jig; Lay-up operation panel 2 in region between adjacent two girders 9, forms operation planar; Secondary beam 8 is had to support in the below of guidance panel 2; For ensureing the safety of operating personnel, at the outer edge of platform body, fence 23 is installed; All with bolts between outer ring 10 and girder 9, between girder 9 and inner ring 1, between girder 9 and secondary beam 8, between girder 9 and guidance panel 2, to have welded rear dismounting jig.
In the present embodiment, eight girder 9 uniform intervals connecting inner ring 1 and outer ring 2 are arranged, every root girder 9 comprises two opposing channel-section steel 9-1 (as shown in Figure 3, comprise 9-1a and 9-1b), form the gap communicated up and down between these two channel-section steels 9-1a, 9-1b, be provided with the contiguous block 6 of connection two channel-section steels 9-1a, 9-1b in the bottom in gap; The top of two channel-section steels 9-1a, 9-1b is equipped with girder panel 3(bolt and connects); Two channel-section steels 9-1a, 9-1b are connected with girder panel 7 by contiguous block 6, as shown in Figure 3; Described retractor device comprises slide rail 7 and annular panel 4, in gap between these two channel-section steels 9-1a, 9-1b, two groups of wheel shaft 11(are installed respectively and support, guiding, slip effect are play to slide rail 7), be arranged with slide rail 7(slide rail 7 between two groups of wheel shafts 11 to be made up of I-steel), slide rail 7 can slide along on the length direction of girder 9, extended or retracted girder 9; After eight one slide rails 7 all stretch out inner ring 1 one segment distance (to adapt to the different welding regions of different last furnace shell 18 outer walls), on the slide rail 7 stretched out, lay ring surface plate 4(again can adopt multiple annular panel 4 to connect, connected by annular connecting plate 20 between adjacent two annular panels 4, as shown in Figure 7), annular panel 4 and guidance panel 2 constitute operation planar jointly.
From the hoist engine 13 that lifting device comprises elevator support 14 and is installed on elevator support 14, elevator support 14 symmetrically and evenly interval is arranged on girder 9; The quantity of hoist engine 13 is preferably even number, is divided into two groups in the present embodiment from lifting device, and often group comprises four spaced hoist engines 13; The one ends wound of the steel wire rope 16 of hoist engine 13 is on hoist engine 13, being fixed on elevator support 14 after the other end of steel wire rope 16 is connected with the fixed pulley 21 hanging over (hanger 17 of a certain welding region of furnace shell 18 outer wall) on hanger 17 (makes main platform body be elevated), and hoist engine 13 carrys out the lifting of implementation platform main body by the length changing steel wire rope 16.
When girder 9 and retractor device are installed, first by contiguous block 6, two of girder 9 channel-section steels 9-1a, 9-1b are connected and fixed, two channel-section steels 9-1a, 9-1b weld wheel shaft 11, then between two groups of wheel shafts 11, slide rail 7 is installed; In order to anti-anti-slip track 7 skids off girder 9, the inner (being positioned at one end of girder 9) of slide rail 7 arranges block 12, in the outer end of girder 9, corresponding baffle ring is installed; In order to anti-anti-slip track 7 slips into girder 9 inside, install pin 19 in the outer end (stretching out one end of girder 9) of slide rail 7; In order to a certain position making slide rail 7 be fixed on girder 9, girder 9 is installed positioner for slide rail 5, as shown in Figure 5 and Figure 6, positioner for slide rail 5 comprises the holder 5-2 raised up, holder 5-2 offers screwed hole, screwed hole matches with bolt 5-1, the lower end of bolt 5-1 is fixedly connected with pressing plate 5-3, pressing plate 5-3 lower surface is provided with rubber blanket 5-4, the below of rubber blanket 5-4 is slide rail 7, turn bolt 5-1 is with dynamic pressure plate 5-3 downward, and the rubber blanket 5-4 under pressing plate 5-3 compresses slide rail 7, and now slide rail 7 stops sliding.
A kind of last furnace shell outer wall jig erection method, the method comprises following step:
Step one, according to the welding requirements of last furnace shell 18 outer wall and the size of furnace shell 18 external diameter, design and make the jig of suitable dimension: because last furnace shell 18 is tubular structure, jig for convenience of furnace shell 18 periphery moves up and down, jig global design is annular, and the adjustable maximum inner diameter of jig is the maximum outside diameter of furnace shell 18; Jig comprises main platform body, and the inside edge of main platform body is connected with retractor device, and retractor device can along the radial expansion of main platform body; Described main platform body comprises inner ring 1, outer ring 2, and has eight girders 9 by inner ring 1 to outer ring 10 symmetric radiation, is connected between adjacent two girders 9 by secondary beam 8; Region lay-up operation panel 2 between adjacent two girders 9; All with bolts between outer ring 10 and girder 9, between girder 9 and inner ring 1, between girder 9 and secondary beam 8, between girder 9 and guidance panel 2; In the present embodiment, jig assembling process is:
1) in inner ring 1 and the outer ring 10 of the surrounding splicing main platform body of furnace shell 18;
2) select ten six roots of sensation channel-section steels, every two are one group and make a girder 9, two channel-section steels 9-1a, 9-1b and connected by contiguous block 6, and weld two groups of wheel shafts 11 on these two channel-section steels 9-1a, 9-1b;
3) lever 19, block 12 are arranged on slide rail 7, between the two groups of wheel shafts 11 slide rail 7 being arranged on girder 9, then lay girder panel 3 on two channel-section steels 9-1a, 9-1b;
3) elevator support 14 is installed: the elevator support 14 installing thickening on the same position of each girder panel 3, with wire rope hoist 13;
4) all weld girder connecting plate at the two ends of girder 9, girder connecting plate is connected with inner ring 1 and outer ring 10 respectively by bolt;
5) connect secondary beam 8 and girder 9: the two ends welding secondary beam connecting plate of secondary beam 8, secondary beam connecting plate is connected with adjacent two girders 9 by bolt;
6) lay-up operation panel 2: lay-up operation panel 2 in the region formed between two adjacent girders 9; The below of guidance panel 2 has secondary beam 8 to support;
7) on girder 9, positioner for slide rail 5 is installed;
8) eight hoist engines 13 are arranged on eight elevator supports 14 respectively, wherein the hoist engine 13 at every four intervals is one group, can the weight of the whole jig of alone bear, one group of Energy control start-stop is shared, to ensure that jig monolithic stability and jig keep level with the hoist engine 13 in group; In the corresponding height of each welding region of its outer wall of last furnace shell 18, circumferential uniform intervals welds eight hangers 17, corresponding with eight hoist engines 13 respectively.
Step 2, the steel wire rope 16 on fixed pulley 21, hoist engine 13 and snap ring 22 is utilized to connect with four hoist engines 13 of group are corresponding with the hanger 17 of a certain welding region of furnace shell 18 outer wall.
Step 3, start four hoist engines 13 with group, upwards promote jig, when jig is promoted to the corresponding position of this welding region, stop hoist engine 13, start weld job.
Step 4, after this welding region has welded, connect another group hoist engine 13 hanger 17 corresponding with it and open this group hoist engine 13, now go up one group of hoist engine 13 not stress, upper one group of elevator unit 13 is dismantled from hanger group 17, prepare the welding carrying out next welding region: if the diameter of its jig position of next welding region is less than the diameter of its jig position of welding region, then first the outer wall of the annular panel 4 that jig exceeds by furnace shell 18 is removed to the center of jig, point four groups of symmetry operations centered by jig again, being sling by remaining annular panel 4 by steel wire rope and chain block 15, (one end of steel wire rope is fixed on annular panel 4, the other end passes hanger 17 after chain block 15, annular panel 4 can be mentioned again by manually pulling, lifting height facilitate slide rail 7 move just can) to center shifting sledge 7 until do not affect the lifting of jig, finally unclamp chain block 15, annular panel 4 is laid on and stretches out on the slide rail 7 of girder 9, if the diameter of its jig position of next welding region is greater than the diameter of its jig position of welding region, then first jig risen to by hoist engine 13 position that its jig of next welding region should locate, point four groups of symmetry operations centered by jig again, by chain block 15 sling annular panel 4(sling height that jig has spread facilitate slide rail 7 move just can), outside shifting sledge 7 is near the outer wall of furnace shell 18, unclamp chain block 15 again, ring surface plate 4 laid by the slide rail 7 stretching out girder 9, and utilize annular connecting plate 20 to be connected and fixed.
Step 5, repetition step 3 and step 4, after treating that each region of furnace shell 18 outer wall is all welded, winch to bottom surface dismounting by jig.
These are only the specific embodiment of the present invention; but protection scope of the present invention is not limited thereto; any those of ordinary skill in the art are in the technical scope disclosed by the present invention, and the change that can expect easily or replacement, all should be encompassed within protection scope of the present invention.Therefore, the protection domain that protection scope of the present invention should limit with claims is as the criterion.

Claims (10)

1. a last furnace shell outer wall jig, is characterized in that, comprise the main platform body of annular, the inside edge of main platform body is connected with retractor device, and retractor device can to the radial expansion of main platform body.
2. a kind of last furnace shell outer wall jig as claimed in claim 1, it is characterized in that, described main platform body comprises inner ring, outer ring, and by the some girders of inner ring to outer ring radiation, girder is no less than four, is connected between adjacent two girders by secondary beam; Lay-up operation panel between adjacent two girders.
3. a kind of last furnace shell outer wall jig as claimed in claim 2, it is characterized in that, described retractor device comprises the slide rail be slidably connected with girder, and slide rail can slide along the length direction of girder; The part that slide rail stretches out edge in main platform body lays ring surface plate; Girder is installed on the positioner for slide rail of positioning slide.
4. a kind of last furnace shell outer wall jig as claimed in claim 3, it is characterized in that, described girder comprises two opposing channel-section steels, forms the gap communicated up and down, be provided with the contiguous block of connection two channel-section steels in the bottom in gap between two channel-section steels; The top of two channel-section steels is equipped with girder panel; Two channel-section steels are connected with girder panel by contiguous block.
5. a kind of last furnace shell outer wall jig as claimed in claim 4, it is characterized in that, each installation of difference one group of wheel shaft on two channel-section steels of girder, two groups of wheel shafts are relatively arranged in the gap of two channel-section steels, described slide rail is installed between two groups of wheel shafts, can slide between two groups of wheel shafts.
6. a kind of last furnace shell outer wall jig as claimed in claim 2, is characterized in that, main platform body is installed on from lifting device, comprise from lifting device the hoist engine be installed on elevator support, and the symmetrical interval of elevator support is arranged on girder.
7. a kind of last furnace shell outer wall jig as claimed in claim 3, it is characterized in that, be positioned at girder one end at slide rail and be provided with block, one end that slide rail stretches out girder is provided with lever.
8. a last furnace shell outer wall jig erection method, is characterized in that, the method comprises following step:
Step one, according to the welding requirements of last furnace shell outer wall and the size of furnace shell external diameter, design and produce the jig of suitable dimension, hoist engine spaced on jig is one group, and the hanger that circumference welding is corresponding with each hoist engine respectively in the corresponding height of each welding region of furnace shell outer wall;
Step 2, fixed pulley, steel wire rope and snap ring is utilized correspondingly with the hanger of a certain welding region of furnace shell outer wall respectively to be connected by the hoist engine with group;
Step 3, startup are with the hoist engine organized, and movable welding platform, to the corresponding position of its jig of this welding region, stops hoist engine, welds the weld seam of this welding region;
After step 4, this welding region have welded, connect another group hoist engine hanger corresponding with it and open this group hoist engine, upper one group of hoist engine is dismantled from the hanger of its correspondence, preparing the welding carrying out next welding region:
Step 5, repetition step 3 and step 4, after treating that the weld seam of furnace shell outer wall welds completely, winch to ground by jig and dismantle.
9. a kind of last furnace shell outer wall jig erection method as claimed in claim 8, is characterized in that, described jig comprises the main platform body of annular, and the inside edge of main platform body is connected with retractor device, and retractor device can along the radial expansion of main platform body; Described main platform body comprises inner ring, outer ring, and by the some girders of inner ring to outer ring radiation, girder is no less than four, is connected between adjacent two girders by secondary beam; Lay-up operation panel between adjacent two girders.
10. a kind of last furnace shell outer wall jig erection method as claimed in claim 8, it is characterized in that, in step 4, if the diameter of its jig position of next welding region is less than the diameter of its jig position of a welding region, then first the annular panel that jig exceeds is removed, again the annular panel of remainder being sling, to jig center shifting sledge to not affecting the lifting of jig, then annular slab being laid on slide rail; If the diameter of its jig position of next welding region is greater than the diameter of its jig position of a welding region, then first jig is promoted to the position that its jig of next welding region should be located, the annular panel that jig has spread is hung in recurrence, slide rail is shifted out jig near furnace shell outer wall, then on slide rail, lay ring surface plate.
CN201510628654.3A 2015-09-28 2015-09-28 A kind of last furnace shell outer wall jig and its erection method Active CN105108396B (en)

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CN104652804A (en) * 2014-12-31 2015-05-27 天津二十冶建设有限公司 Operating platform and construction method for going up and down freely in blast furnace
CN204954201U (en) * 2015-09-28 2016-01-13 武汉一冶钢结构有限责任公司 Blast furnace stove outer covering outer wall welding platform

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