CN103244136A - Shield tunneling machine drive box and production method thereof - Google Patents
Shield tunneling machine drive box and production method thereof Download PDFInfo
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- CN103244136A CN103244136A CN2013101594892A CN201310159489A CN103244136A CN 103244136 A CN103244136 A CN 103244136A CN 2013101594892 A CN2013101594892 A CN 2013101594892A CN 201310159489 A CN201310159489 A CN 201310159489A CN 103244136 A CN103244136 A CN 103244136A
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Abstract
The invention discloses a shielding tunneling machine drive box and a production method thereof. The shielding tunneling machine drive box is composed of a big flange 1, first rib plates 14, second rib plates 16, third rib plates 18, small flanges A 3, a ring A 4, a front cover plate 9, a ring B 10, cover plate supports 6, small flanges B 13, small flanges C 20, a cover plate 5, a ring C 2, a ring D 12 and fourth rib plates 7. The production method of the shielding tunneling machine drive box experiences repetitive tests to acquire optimal welding production orders, welding internal stress is reduced to the utmost and the purpose of controlling weld deformation through symmetrical welding mode of simultaneous operations by two welders and reasonable welding process rules on multiple welding positions easy to deform is achieved. By the production method, the problems that welding joints of massive forge pieces are exploded to crack during welding and the drive box suffers welding deformation during production are effectively solved.
Description
Technical field
The present invention relates to the construction of tunnel technical field, be specifically related to a kind of shield machine driving box and manufacture method thereof.
Background technology
Shield machine is a kind of special engineering machinery of tunnel piercing.Shield machine generally is divided into hand pick formula shield structure, squash type shield structure, half mechanical type shield structure (partial pressure, overall air pressure) according to operating principle, mechanical type shield structure (open chest cutting shield structure, vapour-pressure type shield structure, muddy water pressurization shield structure, earth pressure balanced shield, EPBS, mixed type shield structure, special-shaped shield structure).
Earth pressure balance shield machine is as the medium of stablizing the excavation face earth material (adding foam etc. in case of necessity improves soil), form the earth chamber between cutterhead rear bulkhead and the excavation face, cutterhead rotation excavation increases the earth material, by screw input feeder rotation earth material is transported, the indoor soil pressure of earth can be rotated excavation speed and the spiral output glassware amount (rotary speed) of being unearthed by cutterhead and be regulated again.
The earth pressure balance shield machine driving box is positioned at shield machine master drive area, is cutterhead free style central drive units, is one of important building block of shield machine.Driving box is connected with supporting large-scale ring gear formula bearing, is circular layout, and built-in a plurality of planet pinions, these planetary gears or hydraulic pressure or electricity drive, and reach the driving effect to cutterhead.The workmanship of driving box directly affects efficiency of construction and the application life of shield machine driving.
Shield structure master driving box provides mounting base for other assemblies of cutter-devices system, and is very high to rigidity and the requirement of strength of structure.The structural safety of main driving box has very important significance to cutter-devices system.If the insufficient rigidity of driving box, producing bigger distortion will directly influence the accuracy of mesh of base bearing and pinion, even will cause the damage of base bearing and pinion.
Main driving gearbox is formed a tight-closed casing with base bearing, for the engagement of the ring gear of base bearing and pinion provides protection and lubricated.This driving box is the semiclosed round box that the steel plate by different-thickness is welded into, and 6 pairs of circular holes are arranged on the link flange plate of driving box, for the self-aligning roller bearing at pinion shaft two ends provides support.Main driving box provides mounting base for other assemblies of cutter-devices system, and is very high to rigidity and the requirement of strength of structure, and its structure adopts forged steel and high-quality structural steel to be welded, and wherein connecting the connection flange section is forging.
Existing traditional welding method will reach the flaw detection of ultrasonic wave one-level on the welding quality of thick and heavy forging, the stability of its welding quality is particularly outstanding, but the cost that therefore causes rises, the low inferior problem of production efficiency is also very outstanding.In some units, the making qualification rate of driving box is generally on the low side at home, but the discussion of the problems such as whole manufacturing process of the domestic thick and heavy forging Welding Problems of still not having a relevant driving box and driving box at present.
Summary of the invention
The purpose of this invention is to provide a kind of shield machine driving box and manufacture method thereof, be intended to come with the rational welding method welding quality of weld seam stabilizing, solve thick and heavy forging weld seam in welding process and burst problem with the welding deformation of driving box in manufacture process.
For achieving the above object, the technical solution adopted in the present invention is:
A kind of shield machine driving box is made up of big flange 1, first gusset 14, second gusset 16, the 3rd gusset 18, little flange A3, ring A4, front shroud 9, ring B10, cover plate frame 6, little flange B13, little flange C20, cover plate 5, ring C2, ring D12, the 4th gusset 7.
Wherein, in big flange 1 one sides, first gusset 14, second gusset 16, the 3rd gusset 18 of ring D12 and welding on every side thereof are fixed on the big flange 1, the gusset top is little flange A3 and the concentric welding workpiece that encircles A4, little flange A3 installs 6 the 4th gussets 7 in the top, and front shroud 9, cover plate frame 6 are positioned on the 4th gusset 7 with the workpiece that ring B10 assembly welding becomes, with ring A4 splicing, cover cover plate 5 on the cover plate frame 6, ring C2 is positioned at big flange 1 outer ledge; Big flange 1 opposite side is installed four little flange B13 and two little flange C20.
Wherein, be concentric welding when big flange 1, little flange A3, ring A4, front shroud 9, ring B10, ring C2, the welding of ring D12 opsition dependent, concentricity is not more than 2mm.
The present invention discloses a kind of preparation method of shield machine driving box, its step is as follows:
Welding procedure:
After assembling, spot welding is fixed, spot welding length 30mm;
To encircling the weld seam welding of 1 of D12 and big flange, the clean welded seam area impurity of preweld cleaning needs two welders about the symmetrical welding synchronously in ring D12 center during weldering, use earlier CO outside
2The gas shielded arc welding bottoming, back chipping in ring adopts multi-pass welding, the per pass weld seam should fuse good and clean out, thoroughly, occurs any defective in the welding process and all should in time remove, and all weld seams require penetrations, postwelding is clean with weld cleaning, and weld seam reaches ultrasonic testing/ ultrasonic examination I level;
Welding procedure:
The weld seam that welding gusset and ring D12, big flange are 1, two welders about ring D12 center symmetry welding synchronously burn cross joint earlier, downhand welding is burnt in the back, the weld seam requirement reaches ultrasonic testing/ ultrasonic examination and reaches the I level.
Welding procedure:
To little flange A3, ring A4 welding, carry out back chipping outside, the flaw detection of postwelding ultrasonic wave I level by welding procedure specification (WPS).
Front shroud 9 and cover plate frame 6 usefulness bolts are tightened, the front shroud 9 that leveling is good hangs on platform, groove is placed down, and the position in that the 4th gusset 7 is drawn in front shroud 9 line hangs on front shroud 9 line place with cover plate frame 6, spot welding is fixed after adjusting to correct position, two cover plate frame symmetries freeze, and workpiece are stood up two interim hangers of balanced welding, leveling guarantees flatness 2mm;
Step 5, with front shroud 9 bed hedgehopping 29mm on platform, flatness is not more than 2mm, hoisting ring B10 is in the centre bore of front shroud 9, detect the spacing 190mm of its tip to face distance front shroud 9 end faces, the verticality of controlling itself and front shroud 9 is no more than 2mm, freezes after spot welding is fixing, weld high 15mm, leveling front shroud 9;
Step 6, big flange is leveled up, detect with level gauge, flatness is no more than 1mm, detect the 4th gusset 7, first gusset 14, second gusset 16, the 3rd gusset 18 upper surfaces apart from the height of flange face, guarantee highly to be 344-347mm, control with 6 jack if can't satisfy then, guarantee that its upper surface flatness is no more than 1mm;
Little flange A3 and the workpiece that is welded into of ring A4 are hung on the upper surface of big flange 1, adjust the position, control its concentricity with big flange 1 and be no more than 2mm, little flange A3 flatness is no more than 2mm, spot welding is fixed, each spot welding 30mm of two of weld seam between each gusset and little flange A3;
Welding procedure:
Workpiece is stood up and bed hedgehopping, making above the little flange A3 apart from podium level is 1.2m, to the welding of the weld seam between ring D12 and little flange A3, bottoming outside earlier, back chipping in ring, adopt multi-pass welding, the weld seam between back weldering gusset and the little flange A3 is passed through in ultrasonic testing/ ultrasonic examination, and two welder's symmetries are welded synchronously.
Step 7 lifts first gusset 14, second gusset 16, the 3rd gusset 18, and spot welding is fixed, and the fillet weld between welding gusset and the gusset is welded the weld seam between gusset and the little flange A3 then earlier;
Step 8 hangs on platform with workpiece, and big flange 1 is leveled up, levelness 1mm, press circle that the picture line drawing goes out Φ 1850mm and the circle of 6 Φ 820mm according to the center of circle on the technology piece, detect and guarantee that its concentricity with big flange 1 endoporus is not more than 2mm, inspection declaration after setting-out is finished;
Step 9 hangs on big flange 1 with little flange C20, adjusts to the setting-out position according to the sample dotting punch, and is fixed in the solid welding of little flange C20 internal point, then little flange B13 hung on big flange, adjusts to correct position, fixed in the solid welding of little flange B13 internal point;
Welding procedure:
Quality inspection check size guarantees the center of circle of 6 little flanges in circularity is no more than the circle of 2mm, and two welder's symmetry same parameters freeze synchronously, adopt multi-pass welding, freeze in little flange B13, little flange C20 earlier, then the outside back chipping; Freeze finish after polishing clean, by the requirement of ultrasonic wave I level, check the center of circle size of little flange B13, little flange C20 then, record.
Hoisting ring C2, adjust to the setting-out position, the quality inspection of peace matter portion is fixed by back spot welding, the weld seam of one section 60mm of per 30 degree spot welding in cylindrical shell, the point postwelding adopts multi-pass welding, enclose back root cleaning, two simultaneously synchronous symmetrical weldings of welder during welding earlier in inside weldering one, each welding must form a complete circle, the postwelding flaw detection detects size and record, guarantees that verticality and the concentricity of cylindrical shell all is no more than 2mm;
Step 11, the 4th gusset 7 is welded in the position that 6 the 4th gussets 7 are drawn in setting-out on little flange A3 and ring A4, and all groove weldings are full;
Step 13 stands up workpiece to the weld seam welding between the 4th gusset 7 and the ring B10, and groove welding is full;
Step 15, the big flange cylindrical of car are welded hanger to Φ 3446mm;
Beneficial effect
(1) optimum manufacturing sequence: this method draws best welding manufacturing sequence through repetition test, reduces welding interior stress to greatest extent;
(2) process of symmetrical welding: use the symmetrical welding mode of two welders operation simultaneously and the purpose that the rational welding rules reach the control welding deformation in the welding position of many places easy deformation.
Description of drawings
Fig. 1 is the overall structure schematic diagram of earth pressure balance shield machine;
Fig. 2 is the structural representation of shield machine driving box one side of the present invention;
Fig. 3 is the structural representation of shield machine driving box opposite side of the present invention;
Fig. 4 is the schematic diagram of the preparation method step 1 of shield machine driving box of the present invention;
Fig. 5 is the schematic diagram of the preparation method step 2 of shield machine driving box of the present invention;
Fig. 6 is the schematic diagram of the preparation method step 3 of shield machine driving box of the present invention;
Fig. 7 is the schematic diagram of the preparation method step 4 of shield machine driving box of the present invention;
Fig. 8 is the schematic diagram of the preparation method step 5 of shield machine driving box of the present invention;
Fig. 9 and 10 is the schematic diagram of the preparation method step 6 of shield machine driving box of the present invention;
Figure 11 is the schematic diagram of the preparation method step 7 of shield machine driving box of the present invention;
Figure 12 is the schematic diagram of the preparation method step 8 of shield machine driving box of the present invention;
Figure 13 is the schematic diagram of the preparation method step 9 of shield machine driving box of the present invention;
Figure 14 is the schematic diagram of the preparation method step 10 of shield machine driving box of the present invention;
Figure 15 is the schematic diagram of the preparation method step 11 of shield machine driving box of the present invention;
Figure 16 is the schematic diagram of the preparation method step 12 of shield machine driving box of the present invention;
Figure 17 is the schematic diagram of the preparation method step 10 seven of shield machine driving box of the present invention.
Among the figure, 1 is big flange; 2 are ring C; 3 is little flange A; 4 are ring A; 5 is cover plate; 6 is the cover plate frame; 7 is the 4th gusset; 9 is front shroud; 10 are ring B; 12 are ring D; 13 is little flange B; 14 is first gusset, and 16 is second gusset; 18 is the 3rd gusset; 20 is little flange C; 24 is the single face fillet weld; 25 is driving box; 26 is platform; 27 is the sign indicating number plate.
The specific embodiment
Below in conjunction with accompanying drawing the present invention is elaborated, thereby so that advantages and features of the invention can be easier to be it will be appreciated by those skilled in the art that protection scope of the present invention is made more explicit defining.
A kind of shield machine driving box is made up of big flange 1, first gusset 14, second gusset 16, the 3rd gusset 18, little flange A3, ring A4, front shroud 9, ring B10, cover plate frame 6, little flange B13, little flange C20, cover plate 5, ring C2, ring D12, the 4th gusset 7.
Wherein, in big flange 1 one sides, first gusset 14, second gusset 16, the 3rd gusset 18 of ring D12 and welding on every side thereof are fixed on the big flange, the gusset top is little flange A3 and the concentric welding workpiece that encircles A4, little flange A3 installs 6 the 4th gussets 7 in the top, and front shroud 9, cover plate frame 6 are positioned on the 4th gusset 7 with the workpiece that ring B10 assembly welding becomes, with ring A4 splicing, cover cover plate 5 on the cover plate frame 6, ring C2 is positioned at big flange 1 outer ledge; Big flange 1 opposite side is installed four little flange B13 and two little flange C20.
Wherein, be concentric welding when big flange 1, little flange A3, ring A4, front shroud 9, ring B10, ring C2, the welding of ring D12 opsition dependent, concentricity is not more than 2mm.
The present invention discloses a kind of preparation method of shield machine driving box, its step is as follows:
(1) part 1 big flange is tiled in assembly platform, supports in interior boxing temporarily, the ring center welder piece of planting, 4 interim hangers of flange week side weld, the part 12,14,16 that draws, 18 position;
Welding procedure:
After assembling, spot welding is fixed, spot welding length 30mm;
To the weld seam welding between part 12 rings and part 1 big flange, the clean welded seam area impurity of preweld cleaning needs two welders about the welding synchronously of ring center symmetry during weldering, use earlier CO outside
2The gas shielded arc welding bottoming, back chipping in ring adopts multi-pass welding, the per pass weld seam should fuse good and clean out, thoroughly, occurs any defective in the welding process and all should in time remove, and all weld seams require penetrations, postwelding is clean with weld cleaning, and weld seam reaches ultrasonic testing/ ultrasonic examination I level;
(2) stamp support apart from the position of upper end 100mm in ring, all strong points are beaten interim the support corresponding to the gusset position between each adjacent gusset;
Welding procedure:
Weld seam between welding gusset and ring, big flange, two welders weld synchronously about ring center symmetry and burn cross joint earlier, and downhand welding is burnt in the back, and the weld seam requirement reaches ultrasonic testing/ ultrasonic examination and reaches the I level;
(3) with part 3 little flange handling upper mounting plates, facing up of atresia, with the sign indicating number plate part 3 little flanges are fixed on the large platform, mark the position line that part 4 encircles at part 3, the size of pressing after processing before part 4 welds is drawn, part 4 is hung on the position line on the part 3, adjust the position, press the line assembling, warranty element 3 is not more than 2mm with the concentricity of part 4, spot welding is fixed, in inner spot welding;
Welding procedure:
To 4 weldings of part 3, part, carry out back chipping outside, the flaw detection of postwelding ultrasonic wave I level by welding procedure specification (WPS);
(4) remove sign indicating number plate between little flange and the platform, detect size, the circularity of warranty element 4 is not more than 4mm, and the flatness of part 3 is not more than 2mm;
Part 9 front shrouds that leveling is good hung on platform after cover plate and cover plate frame tightened with bolt, groove is placed down, the position that part 7 is drawn in line on the cover board, the cover plate frame is hung on front shroud line place, adjust to correct position after spot welding fix, two cover plate frame symmetries freeze, workpiece is stood up, two interim hangers of balanced welding, leveling guarantees flatness 2mm;
(5) with front shroud bed hedgehopping 29mm on platform, flatness is not more than 2mm, and lifting part 10 is in the centre bore of front shroud, detect the spacing (190mm) of its tip to face distance front shroud end face, the verticality of controlling itself and cover plate is no more than 2mm, freezes after spot welding is fixing, weld high 15mm, the leveling front shroud;
(6) big flange is leveled up, detected with level gauge, flatness is no more than 1mm, detection piece 7,14,16,18 upper surfaces are apart from the height of flange face, guarantee highly to be 344-347mm, control with 6 jack as satisfying then, guarantee that its upper surface flatness is no more than 1mm;
The workpiece that part 3 and part 4 are welded into hangs on the upper surface of big flange, adjusts the position, controls its concentricity with big flange and is no more than 2mm, and part 3 flatnesses are no more than 2mm, and spot welding is fixed, each spot welding 30mm of two of each gusset and 3 weld seams of part;
Welding procedure:
Workpiece is stood up and bed hedgehopping, and making above the part 3 apart from podium level is 1.2m, and the weld seam of 3 of part 12 and parts is welded, bottoming outside earlier, back chipping in ring adopts multi-pass welding, the weld seam between back weldering gusset and the part 3 is passed through in ultrasonic testing/ ultrasonic examination, and two welder's symmetries are welded synchronously;
(7) lifting first gusset 14, second gusset 16, the 3rd gusset 18,
Spot welding is fixed, and the fillet weld between welding gusset and the gusset is welded the weld seam between gusset and the part 3 then earlier;
(8) workpiece is hung on platform, big flange is leveled up, levelness 1mm presses circle that the picture line drawing goes out Φ 1850 and the circle of 6 Φ 820 according to the center of circle on the technology piece, detects and guarantees that its concentricity with big flange endoporus is not more than 2mm, inspection declaration after setting-out is finished;
(9) part 20 is hung on big flange, adjust to the setting-out position according to the sample dotting punch, fixed in the solid welding of little flange internal point, then part 13 is hung on flange, adjust to correct position, fixed in the solid welding of little flange internal point;
Welding procedure:
Quality inspection check size guarantees the center of circle of 6 little flanges in circularity is no more than the circle of 2mm, and two welder's symmetry same parameters freeze synchronously, adopt multi-pass welding, freeze in little flange earlier, then the outside back chipping;
Freeze finish after polishing clean, by the requirement of ultrasonic wave I level, check little flange center of circle size then, record;
(10) workpiece is stood up, the weld seam between welding gusset and big flange is leveled up, and surveys the levelness of big flange with level gauge, and assurance is not more than 2mm.The position that part 2 cylindrical shells 1 are drawn in line, by the rough machined size setting-out of interior circle, the control concentricity is not more than 2mm;
Lifting part 2, adjust to the setting-out position, the quality inspection of peace matter portion is fixed by back spot welding, the weld seam of one section 60mm of per 30 degree spot welding in cylindrical shell, and the some postwelding adopts multi-pass welding, earlier at inside weldering one circle, back root cleaning, two welders symmetrical weldings synchronously simultaneously during welding, each welding must form a complete circle, the postwelding flaw detection detects size and record (verticality and the concentricity that guarantee cylindrical shell all are no more than 2mm);
(11) position that 6 parts 7 are drawn in setting-out on part 3 and part 4, welding part 7. is full with all groove weldings;
(12) lift the workpiece that front shroud becomes with part 10 assembly weldings, control member 10 lower surfaces are 487mm with the distance of big flange upper surface, and part 10 is not more than 2mm with the concentricity of big flange, earlier front shroud spot welding is fixed, weld seam between weldering earlier itself and the part 7, weld seam between weldment 10 and the front shroud welds the weld seam between front shroud 9 and the part 4 at last then, and groove welding is flat and polishing is level and smooth;
(13) workpiece is stood up to the welding of the weld seam between part 7 and the part 10, groove welding is full;
(14) all weld grindings of whole work-piece are smooth, handle outward appearance well;
(15) the big flange cylindrical of car welds hanger to Φ 3446;
(16) whole removing stress annealing;
(17) cover plate 5 that processes is hung on cover plate frame 6, join the hole of boring on the cover plate frame, tapping;
(18) workpiece is carried out blasting treatment, rust prevention by applying liquid material coats with lacquer immediately afterwards;
(19) favourable turn manufacturing procedure;
(20) weldment pipe A21, pipe B22, pipe C23.
It should be noted that at last: obviously, above-described embodiment only is for example of the present invention clearly is described, and is not the restriction to embodiment.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here need not also can't give all embodiments exhaustive.And the apparent variation of being amplified out thus or change still are among protection scope of the present invention.
Claims (8)
1. a shield machine driving box is characterized in that: by big flange (1), first gusset (14), second gusset (16), the 3rd gusset (18), little flange A(3), ring A(4), front shroud (9), ring B(10), cover plate frame (6), little flange B(13), little flange C(20), cover plate (5), ring C(2), ring D(12), the 4th gusset (7) forms; Wherein, in big flange (1) one side, the ring D(12) and on every side the welding first gusset (14), second gusset (16), the 3rd gusset (18) be fixed on the big flange, gusset top be little flange A(3) with encircle A(4) concentric welding workpiece, little flange A(3) 6 the 4th gussets (7) are installed in the top, front shroud (9), cover plate frame (6) and ring B(10) workpiece that becomes of assembly welding is positioned on the 4th gusset (7), with ring A(4) splicing, cover plate frame (6) go up to cover cover plate (5), ring C(2) be positioned at big flange (1) outer ledge; At big flange (1) opposite side four little flange B(13 are installed) and two little flange C(20).
2. shield machine driving box as claimed in claim 1, it is characterized in that: described big flange (1), little flange A(3), ring A(4), front shroud (9), ring B(10), ring C(2) and ring D(12) opsition dependent is concentric welding when welding, concentricity is not more than 2mm.
3. the preparation method of the described shield machine driving box of claim 1 is characterized in that, comprises the steps:
Step 1 is tiled in assembly platform with big flange (1), supports in interior boxing temporarily, and the ring center welder piece of planting, 4 interim hangers of flange week side weld, ring D(12 draws), the position of first gusset (14), second gusset (16), the 3rd gusset (18);
Step 2 is at ring D(12) in stamp support apart from the position of upper end 100mm, all strong points are corresponding to the gusset position, play support temporarily between each adjacent gusset;
Step 3, with little flange A(3) handling upper mounting plate (26), the facing up of atresia, with sign indicating number plate (27) with little flange A(3) be fixed on the large platform, at little flange A(3) mark the ring A(4) the position line, by ring A(4) size before the weldering after the processing draws, and will encircle A(4) hang on little flange A(3) and on the position line, the adjustment position, press the line assembling, guarantee little flange A(3) with the ring A(4) concentricity be not more than 2mm, spot welding is fixed, in inner spot welding;
Step 4 removes little flange A(3) and platform (26) between sign indicating number plate (27), detect size, guarantee ring A(4) circularity be not more than 4mm, little flange A(3) flatness be not more than 2mm;
Front shroud (9) and cover plate frame (6) are tightened with bolt, the front shroud that leveling is good (9) hangs on platform, groove is placed down, in the draw position of the 4th gusset (7) of front shroud (9) line, cover plate frame (6) is hung on front shroud (9) line place, spot welding is fixed after adjusting to correct position, two cover plate frame symmetries freeze, and workpiece are stood up two interim hangers of balanced welding, leveling guarantees flatness 2mm;
Step 5, with front shroud (9) bed hedgehopping 29mm on platform, flatness is not more than 2mm, hoisting ring B(10) in the centre bore of front shroud (9), detect the spacing 190mm of its tip to face distance front shroud (9) end face, the verticality of controlling itself and front shroud (9) is no more than 2mm, freezes after spot welding is fixing, weld high 15mm, leveling front shroud (9);
Step 6, big flange is leveled up, detect with level gauge, flatness is no more than 1mm, detect the 4th gusset (7), first gusset (14), second gusset (16), the 3rd gusset (18) upper surface apart from the height of flange face, guarantee highly to be 344-347mm, control with 6 jack if can't satisfy then, guarantee that its upper surface flatness is no more than 1mm;
With little flange A(3) with ring A(4) workpiece that is welded into hangs on the upper surface of big flange (1), adjust the position, control its concentricity with big flange (1) and be no more than 2mm, little flange A(3) flatness is no more than 2mm, spot welding is fixed, each gusset and little flange A(3) between each spot welding 30mm of two of weld seam;
Step 7 lifts first gusset (14), second gusset (16), the 3rd gusset (18), and spot welding is fixed, and earlier the fillet weld between welding gusset and the gusset is welded gusset and little flange A(3 then) between weld seam;
Step 8 hangs on platform with workpiece, and big flange (1) is leveled up, levelness 1mm, press circle that the picture line drawing goes out Φ 1850mm and the circle of 6 Φ 820mm according to the center of circle on the technology piece, detect and guarantee that its concentricity with big flange (1) endoporus is not more than 2mm, inspection declaration after setting-out is finished;
Step 9 is with little flange C(20) hang on big flange (1), adjust to the setting-out position according to the sample dotting punch, at little flange C(20) the internal point solid welding is calmly, then with little flange B(13) hang on big flange, adjust to correct position, at little flange B(13) the internal point solid welding is calmly;
Step 10 is stood up workpiece, the weld seam between welding gusset and big flange (1), level up, survey the levelness of big flange (1) with level gauge, guarantee to be not more than 2mm, the line ring C(2 that draws) position of cylindrical shell, by the rough machined size setting-out of interior circle, the control concentricity is not more than 2mm;
Hoisting ring C(2), adjust to the setting-out position, the quality inspection of peace matter portion is fixed by back spot welding, the weld seam of one section 60mm of per 30 degree spot welding in cylindrical shell, the point postwelding adopts multi-pass welding, enclose back root cleaning, two simultaneously synchronous symmetrical weldings of welder during welding earlier in inside weldering one, each welding must form a complete circle, the postwelding flaw detection detects size and record, guarantees that verticality and the concentricity of cylindrical shell all is no more than 2mm;
Step 11 is at little flange A(3) and ring A(4) go up the position that 6 the 4th gussets (7) are drawn in setting-out, weld the 4th gusset (7), all groove weldings are full;
Step 12, lifting front shroud (9) with encircle B(10) workpiece that becomes of assembly welding, gate ring B(10) lower surface is 487mm with the distance of big flange upper surface, and ring B(10) concentricity with big flange (1) is not more than 2mm, earlier front shroud (9) spot welding is fixed the weld seam between weldering earlier itself and the 4th gusset (7), weld-ring B(10 then) and front shroud (9) between weld seam, weld front shroud (9) and ring A(4 at last) between weld seam, groove welding is flat and polishing is level and smooth;
Step 13 stands up workpiece to the 4th gusset (7) and ring B(10) between weld seam welding, groove welding is full;
Step 14, all weld grindings of whole work-piece are smooth, handle outward appearance well;
Step 15, the big flange cylindrical of car are welded hanger to Φ 3446mm;
Step 10 six, the whole removing stress annealing;
Step 10 seven hangs on cover plate frame (6) with the cover plate (5) that processes, and joins the hole of boring on the cover plate frame, tapping;
Step 10 eight is carried out blasting treatment to workpiece, and rust prevention by applying liquid material coats with lacquer immediately afterwards;
Step 10 nine, the favourable turn manufacturing procedure;
Step 2 ten, weldment pipe A(21), pipe C(23 pipe B(22)).
4. method according to claim 3, it is characterized in that: in the described step 1, after assembling, spot welding is fixed, spot welding length 30mm; To ring D(12) and the welding of the weld seam between flange (1) greatly, the clean welded seam area impurity of preweld cleaning needs two welders to weld synchronously about ring center symmetry during weldering, use earlier CO outside
2The gas shielded arc welding bottoming, back chipping in ring adopts multi-pass welding; the per pass weld seam should fuse good and clean out, thoroughly, occurs any defective in the welding process and all should in time remove, and all weld seams require penetrations; postwelding is clean with weld cleaning, and weld seam reaches ultrasonic testing/ ultrasonic examination I level.
5. method according to claim 3, it is characterized in that: in the described step 2, welding gusset and ring D(12), the big weld seam between flange (1), two welders are about encircling D(12) center symmetry welding synchronously elder generation burning cross joint, downhand welding is burnt in the back, and weld seam requires to reach ultrasonic testing/ ultrasonic examination and reaches the I level.
6. method according to claim 3 is characterized in that: in the described step 3, to little flange A(3), ring A(4) welding, carry out back chipping outside, the flaw detection of postwelding ultrasonic wave I level by welding procedure specification (WPS).
7. method according to claim 3, it is characterized in that: in the described step 6, workpiece is stood up and bed hedgehopping, make little flange A(3) above be 1.2m apart from podium level, to ring D(12) with little flange A(3) between the weld seam welding, feel secure outside earlier, back chipping in ring, adopt multi-pass welding, ultrasonic testing/ ultrasonic examination is by back weldering gusset and little flange A(3) between weld seam, two welder's symmetries are welded synchronously.
8. method according to claim 3, it is characterized in that: in the described step 9, quality inspection check size, guarantee that the center of circle of 6 little flanges is in circularity is no more than the circle of 2mm, two welder's symmetry same parameters freeze synchronously, adopt multi-pass welding, earlier at little flange B(13), little flange C(20) in freeze outside back chipping then; Freeze finish after polishing clean, by the requirement of ultrasonic wave I level, check little flange B(13 then), little flange C(20) center of circle size, record.
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| CN110814566A (en) * | 2019-12-12 | 2020-02-21 | 临沂昌立得工程机械设备有限公司 | Manufacturing process of large oil tank for engineering machinery |
| CN110919221A (en) * | 2019-12-17 | 2020-03-27 | 常熟市恒丰机械制造有限公司 | Welding process of front shield of shield tunneling machine |
| CN111963185A (en) * | 2020-07-30 | 2020-11-20 | 上海隧道工程有限公司 | Cutter head driving device of hard rock dual-mode center deslagging TBM (tunnel boring machine) |
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| CN111963185B (en) * | 2020-07-30 | 2022-02-01 | 上海隧道工程有限公司 | Cutter head driving device of hard rock dual-mode center deslagging TBM (tunnel boring machine) |
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| CN103244136B (en) | 2014-12-10 |
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Application publication date: 20130814 Assignee: China Railway Science & Industry Rail Transit Equipment Co., Ltd. Assignor: China Railway Science & Industry Group Co., Ltd. Contract record no.: 2015420000074 Denomination of invention: Shield tunneling machine drive box and production method thereof Granted publication date: 20141210 License type: Exclusive License Record date: 20150508 |
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Effective date of registration: 20180503 Address after: 430223 happiness Industrial Park, Mian Shan Development Zone, Jiangxia District, Wuhan, Hubei Patentee after: China Railway Science & Industry Rail Transit Equipment Co., Ltd. Address before: 430066, 45 East Main Street, Wuchang District, Hubei, Wuhan Co-patentee before: China Railway Science & Industry Rail Transit Equipment Co., Ltd. Patentee before: China Railway Science & Industry Group Co., Ltd. |
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