CN103244136B - 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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- CN103244136B CN103244136B CN201310159489.2A CN201310159489A CN103244136B CN 103244136 B CN103244136 B CN 103244136B CN 201310159489 A CN201310159489 A CN 201310159489A CN 103244136 B CN103244136 B CN 103244136B
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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 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 is generally 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, Slurry Shield, earth pressure balanced shield, EPBS, mixed type shield structure, special-shaped shield structure).
Earth pressure balance shield machine is using earth material (adding if desired foam etc. improves soil) as the medium of stablizing excavation face, between cutterhead rear bulkhead and excavation face, form earth chamber, cutterhead rotation excavation increases earth material, by screw input feeder rotation, earth material is transported, the indoor soil pressure of earth can be rotated a rate of advance and the spiral transferring discharger amount (rotary speed) of being unearthed by cutterhead and be regulated again.
Earth pressure balance shield machine driving box is positioned at the main drive area of shield machine, is cutterhead free style central drive units, is one of important building block of shield machine.Driving box is connected with supporting large-scale internal tooth ring type bearing, is circular layout, and built-in multiple planet pinions, these planetary gears or hydraulic pressure or electric drive, reach the driving effect to cutterhead.The workmanship of driving box directly affects efficiency of construction and the application life of shield machine driving.
Other assemblies that the main driving box of shield structure is cutter-devices system provide mounting base, require very high to the Rigidity and 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 larger distortion will directly affect the accuracy of mesh of base bearing and pinion, even will cause the damage of base bearing and pinion.
Main driving gearbox forms a tight-closed casing together with base bearing, for the ring gear of base bearing and the engagement of pinion provide protection and lubricated.This driving box is the semiclosed round box being become by the Plate Welding of different-thickness, has 6 pairs of circular holes, for the self-aligning roller bearing at pinion shaft two ends provides support on the link flange plate of driving box.Other assemblies that main driving box is cutter-devices system provide mounting base, and very high to the Rigidity and strength requirement of structure, its structure adopts forged steel and high-quality structural steel to be welded, and wherein connecting connection flange section is forging.
Existing traditional welding method will reach the flaw detection of ultrasonic wave one-level in the welding quality of thick and heavy forging, and the stability of its welding quality is particularly outstanding, but the cost therefore causing 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 domestic discussion there is no about the problem such as thick and heavy forging Welding Problems and the overall manufacturing process of driving box of driving box at present.
Summary of the invention
The object of this invention is to provide a kind of shield machine driving box and manufacture method thereof, be intended to come with rational welding technique the welding quality of weld seam stabilizing, solve thick and heavy forging weld seam in welding process and burst the problem of the welding deformation in manufacture process with driving box.
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 large flange 1, the first gusset 14, the 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 large flange 1 one sides, the first gusset 14, the second gusset 16, the 3rd gusset 18 of ring D12 and welding around thereof are fixed on large flange 1, gusset top is little flange A3 and the concentric welding workpiece that encircles A4, little flange A3 installs 6 the 4th gussets 7 in 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, on cover plate frame 6, cover cover plate 5, ring C2 is positioned at large flange 1 outer ledge; Large flange 1 opposite side is installed four little flange B13 and two little flange C20.
Wherein, when large flange 1, little flange A3, ring A4, front shroud 9, ring B10, ring C2, the welding of ring D12 opsition dependent, be concentric welding, 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:
Step 1, is laid in assembly platform by large flange 1, at interior boxing temporary supporting, and ring center Welding piece, 4 interim hangers of flange peripheral weld, draw the position of encircling D12, the first gusset 14, the second gusset 16, the 3rd gusset 18;
Welding procedure:
After assembling, spot welding is fixed, spot welding length 30mm;
To the weld seam welding between ring D12 and large flange 1, the clean welded seam area impurity of preweld cleaning, needs two welders about the synchronous welding of ring D12 Central Symmetry when weldering, first use outside CO
2gas shielded arc welding bottoming, back chipping in ring, adopts multi-pass welding; per pass weld seam should fuse good and clean out, thoroughly, occurs that any defect all should remove in time in welding process, and all weld seams require penetrations; postwelding is clean by weld cleaning, and weld seam reaches ultrasonic testing/ ultrasonic examination I level;
Step 2 is stamped support apart from the position of upper end 100mm in ring D12, and all strong points, corresponding to bars position, are beaten temporary supporting between each adjacent gusset;
Welding procedure:
Weld seam between welding gusset and ring D12, large flange 1, two welders first burn cross joint about encircling the synchronous welding of D12 Central Symmetry, rear burning downhand welding, weld seam requires to reach ultrasonic testing/ ultrasonic examination and reaches I level.
Step 3, by little flange A3 handling upper mounting plate 26, the facing up of atresia, is fixed on little flange A3 on large platform with a code plate 27, on little flange A3, mark the position line of ring A4, draw by the size after processing before ring A4 weldering, ring A4 is hung on to the position line on little flange A3, adjust position, press line assembling, ensure that little flange A3 and the concentricity of ring A4 are not more than 2mm, spot welding is fixed, in inner spot welding;
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).
Step 4, removes the code plate 27 between little flange A3 and platform 26, detects size, ensures that the circularity of ring A4 is not more than 4mm, and the flatness of little flange A3 is not more than 2mm;
By front shroud 9 and cover plate frame 6 use bolt tightenings, front shroud 9 good leveling is hung on to platform, groove is placed down, and on front shroud 9, line draws the position of the 4th gusset 7, and cover plate frame 6 is hung on to front shroud 9 line place, after adjusting to correct position, spot welding is fixed, two cover plate frame symmetries freeze, and workpiece are stood up to two interim hangers of balanced welding, leveling, ensures flatness 2mm;
Step 5, by front shroud 9 padded 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, after spot welding is fixing, freezes, weld high 15mm, leveling front shroud 9;
Step 6, large flange is leveled up, detect with level gauge, flatness is no more than 1mm, detect the 4th gusset 7, the first gusset 14, the second gusset 16, the 3rd gusset 18 upper surfaces height apart from flange face, ensure to be highly 344-347mm, control with 6 jack if cannot meet, ensure that its upper surface flatness is no more than 1mm;
The workpiece that little flange A3 and ring A4 are welded into hangs on the upper surface of large flange 1, adjust position, control it and be no more than 2mm with the concentricity of large flange 1, little flange A3 flatness is no more than 2mm, spot welding is fixed, the each spot welding 30mm in two of weld seam between each gusset and little flange A3;
Welding procedure:
Workpiece is stood up also padded, making distance podium level above little flange A3 is 1.2m, to the weld seam welding between ring D12 and little flange A3, first bottoming outside, back chipping in ring, adopt multi-pass welding, ultrasonic testing/ ultrasonic examination is by the weld seam between rear weldering gusset and little flange A3, the synchronously weldings of two welder's symmetries.
Step 7, lifting the first gusset 14, the second gusset 16, the 3rd gusset 18, spot welding is fixed, the fillet weld between first welding gusset and gusset, the then weld seam between welding gusset and little flange A3;
Step 8, hangs on platform by workpiece, and large flange 1 is leveled up, levelness 1mm, press circle that picture line drawing goes out Φ 1850mm and the circle of 6 Φ 820mm according to the center of circle on technique piece, detect and ensure that itself and the concentricity of large flange 1 endoporus are not more than 2mm, inspection declaration after setting-out completes;
Step 9, hangs on large flange 1 by little flange C20, adjusts to setting-out position according to sample dotting punch, fixed in the solid welding of little flange C20 internal point, then little flange B13 is hung on to large flange, adjusts to correct position, fixed in the solid welding of little flange B13 internal point;
Welding procedure:
Quality inspection check size, ensures that the center of circle of 6 little flanges is in circularity is no more than the circle of 2mm, and two symmetrical same parameters of welder synchronously freeze, and adopt multi-pass welding, first in little flange B13, little flange C20, freeze, then outside back chipping; The rear polishing of having freezed is clean, by the requirement of ultrasonic wave I level, then checks the center of circle size of little flange B13, little flange C20, record.
Step 10, stands up workpiece, and the weld seam between welding gusset and large flange 1, levels up, and surveys the levelness of large flange 1 with level gauge, ensures to be not more than 2mm, and line draws the position of ring C2 cylindrical shell, by the rough machined size setting-out of inner circle, controls concentricity and is not more than 2mm;
Hoisting ring C2, adjust to setting-out position, the quality inspection of peace matter portion is fixed by rear spot welding, the weld seam of one section of 60mm of every 30 degree spot welding in cylindrical shell, point postwelding adopts multi-pass welding, first enclose back root cleaning, two simultaneously synchronous symmetrical weldings of welder when welding at internal welding one, each welding must form a complete circle, postwelding flaw detection, detects size record, ensures that verticality and the concentricity of cylindrical shell is all no more than 2mm;
Step 11, on little flange A3 and ring A4, setting-out draws the position of 6 the 4th gussets 7, and welding the 4th gusset 7 is full by all groove weldings;
Step 12, the workpiece that lifting front shroud 9 becomes with ring B10 assembly welding, gate ring B10 lower surface is 487mm with the distance of large flange upper surface, and ring B10 is not more than 2mm with the concentricity of large flange 1, first front shroud 9 spot welding are fixed, first welded the weld seam between itself and the 4th gusset 7, the then weld seam between weld-ring B10 and front shroud 9, finally weld the weld seam between front shroud 9 and ring A4, groove welding is flat and polishing is level and smooth;
Step 13, stands up workpiece to the weld seam welding between the 4th gusset 7 and ring B10, and groove welding is full;
Step 14, by smooth all whole workpiece weld grindings, handles outward appearance well;
Step 15, the large flange excircle of car, to Φ 3446mm, welds hanger;
Step 10 six, whole removing stress annealing;
Step 10 seven, hangs on cover plate frame 6 by the cover plate processing 5, joins the hole of boring on cover plate frame, tapping;
Step 10 eight, carries out blasting treatment to workpiece, afterwards rust prevention by applying liquid material paint immediately;
Step 10 nine, favourable turn manufacturing procedure;
Step 2 ten, weldment pipe A21, pipe B22, pipe C23(not shown).
Beneficial effect
(1) optimum manufacturing sequence: this method, through repetition test, draws best welding manufacturing sequence, reduces to greatest extent welding interior stress;
(2) process of symmetrical welding: hold yielding welding position in many places and use the symmetrical welding mode of two welders operation simultaneously and rational welding procedure specification (WPS) to reach the object of controlling welding deformation.
Brief description of the 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.
In figure, 1 is large flange; 2 is ring C; 3 is little flange A; 4 is ring A; 5 is cover plate; 6 is cover plate frame; 7 is the 4th gusset; 9 is front shroud; 10 is ring B; 12 is ring D; 13 is little flange B; 14 is the first gusset, and 16 is the second gusset; 18 is the 3rd gusset; 20 is little flange C; 24 is one side fillet weld; 25 is driving box; 26 is platform; 27 is code plate.
Detailed description of the invention
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 to more explicit defining.
A kind of shield machine driving box, is made up of large flange 1, the first gusset 14, the 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 large flange 1 one sides, the first gusset 14, the second gusset 16, the 3rd gusset 18 of ring D12 and welding around thereof are fixed on large flange, gusset top is little flange A3 and the concentric welding workpiece that encircles A4, little flange A3 installs 6 the 4th gussets 7 in 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, on cover plate frame 6, cover cover plate 5, ring C2 is positioned at large flange 1 outer ledge; Large flange 1 opposite side is installed four little flange B13 and two little flange C20.
Wherein, when large flange 1, little flange A3, ring A4, front shroud 9, ring B10, ring C2, the welding of ring D12 opsition dependent, be concentric welding, 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) large part 1 flange is laid in to assembly platform, at interior boxing temporary supporting, ring center Welding piece, 4 interim hangers of flange peripheral weld, draw the position of part 12,14,16,18;
Welding procedure:
After assembling, spot welding is fixed, spot welding length 30mm;
To the weld seam welding between part 12 rings and the large flange of part 1, the clean welded seam area impurity of preweld cleaning, needs two welders about the synchronous welding of ring Central Symmetry when weldering, first use outside CO
2gas shielded arc welding bottoming, back chipping in ring, adopts multi-pass welding; per pass weld seam should fuse good and clean out, thoroughly, occurs that any defect all should remove in time in welding process, and all weld seams require penetrations; postwelding is clean by weld cleaning, and weld seam reaches ultrasonic testing/ ultrasonic examination I level;
(2) in ring, stamp support apart from the position of upper end 100mm, all strong points, corresponding to bars position, are beaten temporary supporting between each adjacent gusset;
Welding procedure:
Weld seam between welding gusset and ring, large flange, two welders first burn cross joint about encircling the synchronous welding of Central Symmetry, rear burning downhand welding, weld seam requires to reach ultrasonic testing/ ultrasonic examination and reaches I level;
(3) by little part 3 flange handling upper mounting plate, facing up of atresia, little part 3 flange is fixed on large platform with code plate, on part 3, marks the position line that part 4 encircles, draw by the size after processing before part 4 welderings, part 4 is hung on to the position line on part 3, adjust position, by 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 part 3, part 4 weldings, carry out back chipping outside, the flaw detection of postwelding ultrasonic wave I level by welding procedure specification (WPS);
(4) remove the code plate between little flange and 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;
By cover plate and cover plate frame with after bolt tightening, part 9 front shrouds good leveling being hung on to platform, groove is placed down, on the cover board line draws the position of part 7, cover plate frame is hung on to 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, ensures flatness 2mm;
(5) by front shroud padded 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, after spot welding is fixing, freezes, weld high 15mm, leveling front shroud;
(6) large flange is leveled up, with level gauge detection, flatness is no more than 1mm, detection piece 7,14,16,18 upper surfaces are apart from the height of flange face, ensure to be highly 344-347mm, control with 6 jack as met, ensure 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 large flange, adjusts position, controls it and is no more than 2mm with the concentricity of large flange, and part 3 flatnesses are no more than 2mm, and spot welding is fixed, the each spot welding 30mm in two of weld seam between each gusset and part 3;
Welding procedure:
Workpiece is stood up and padded, make part 3 above distance podium level be 1.2m, to the weld seam welding between part 12 and part 3, first bottoming outside, back chipping in ring, adopts multi-pass welding, ultrasonic testing/ ultrasonic examination is by the weld seam between rear weldering gusset and part 3, two symmetrical synchronous weldings of welder;
(7) lifting the first gusset 14, the second gusset 16, the 3rd gusset 18,
Spot welding is fixed, the fillet weld between first welding gusset and gusset, the then weld seam between welding gusset and part 3;
(8) workpiece is hung on to platform, large flange is leveled up, levelness 1mm, presses circle that picture line drawing goes out Φ 1850 and the circle of 6 Φ 820 according to the center of circle on technique piece, detects and ensures that itself and the concentricity of large flange endoporus are not more than 2mm, inspection declaration after setting-out completes;
(9) part 20 is hung on to large flange, adjust to setting-out position according to sample dotting punch, fixed in the solid welding of little flange internal point, then part 13 is hung on to flange, adjust to correct position, fixed in the solid welding of little flange internal point;
Welding procedure:
Quality inspection check size, ensures that the center of circle of 6 little flanges is in circularity is no more than the circle of 2mm, and two symmetrical same parameters of welder synchronously freeze, and adopt multi-pass welding, first in little flange, freeze, then outside back chipping;
The rear polishing of having freezed is clean, by the requirement of ultrasonic wave I level, then checks little flange center of circle size, record;
(10) workpiece is stood up, the weld seam between welding gusset and large flange, levels up, and surveys the levelness of large flange with level gauge, ensures to be not more than 2mm.Line draws the position of part 2 cylindrical shells 1, by the rough machined size setting-out of inner circle, controls concentricity and is not more than 2mm;
Lifting part 2, adjust to setting-out position, the quality inspection of peace matter portion is fixed by rear spot welding, the weld seam of one section of 60mm of every 30 degree spot welding in cylindrical shell, and some postwelding adopts multi-pass welding, first enclose at internal welding one, back root cleaning, two simultaneously synchronous symmetrical weldings of welder when welding, each welding must form a complete circle, postwelding flaw detection, detects size record (verticality and the concentricity that ensure cylindrical shell are all no more than 2mm);
(11) on part 3 and part 4, setting-out draws the position of 6 parts 7, and butt welding piece 7. is full by all groove weldings;
(12) workpiece that lifting front shroud becomes with part 10 assembly weldings, control member 10 lower surfaces are 487mm with the distance of large flange upper surface, and part 10 is not more than 2mm with the concentricity of large flange, first front shroud spot welding is fixed, first weld the weld seam between itself and part 7, then the weld seam between weldment 10 and front shroud, finally welds the weld seam between front shroud 9 and part 4, and groove welding is flat and polishing is level and smooth;
(13) workpiece is stood up to the weld seam welding between part 7 and part 10, groove welding is full;
(14) by smooth all whole workpiece weld grindings, handle outward appearance well;
(15) the large flange excircle of car, to Φ 3446, welds hanger;
(16) whole removing stress annealing;
(17) cover plate processing 5 is hung on to cover plate frame 6, join the hole of boring on cover plate frame, tapping;
(18) workpiece is carried out to blasting treatment, afterwards rust prevention by applying liquid material paint immediately;
(19) favourable turn manufacturing procedure;
(20) weldment pipe A21, pipe B22, pipe C23.
Finally it should be noted that: obviously, above-described embodiment is only for example of the present invention is clearly described, and the not 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 without also giving exhaustive to all embodiments.And the apparent variation of being amplified out thus or variation are still among protection scope of the present invention.
Claims (6)
1. the preparation method of a shield machine driving box, it is characterized in that, described shield machine driving box is made up of large flange (1), the first gusset (14), the 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), wherein, in large flange (1) one side, ring D (12) and around first gusset (14) of welding, the second gusset (16), the 3rd gusset (18) is fixed on large flange, gusset top is little flange A (3) and the concentric welding workpiece that encircles A (4), little flange A (3) installs 6 the 4th gussets (7) in top, front shroud (9), cover plate frame (6) is positioned on the 4th gusset (7) with the workpiece that ring B (10) assembly welding becomes, with ring A (4) splicing, the upper cover plate (5) that covers of cover plate frame (6), ring C (2) is positioned at large flange (1) outer ledge, at large flange (1) opposite side, four little flange B (13) and two little flange C (20) are installed, described large flange (1), little flange A (3), ring A (4), front shroud (9), ring B (10), ring C (2) and ring D (12) opsition dependent are concentric welding while welding, and concentricity is not more than 2mm, described preparation method comprises the steps:
Step 1, large flange (1) is laid in to assembly platform, at interior boxing temporary supporting, ring center Welding piece, 4 interim hangers of flange peripheral weld, draw the position of encircling D (12), the first gusset (14), the second gusset (16), the 3rd gusset (18);
Step 2 is stamped support apart from the position of upper end 100mm in ring D (12), and all strong points, corresponding to bars position, are beaten temporary supporting between each adjacent gusset;
Step 3, by little flange A (3) handling upper mounting plate (26), facing up of atresia, little flange A (3) is fixed on large platform with code plate (27), on little flange A (3), mark the position line of ring A (4), draw by the size after processing before ring A (4) weldering, to encircle A (4) and hang on the position line on little flange A (3), adjust position, press line assembling, ensure that little flange A (3) and the concentricity of ring A (4) are not more than 2mm, spot welding is fixed, in inner spot welding;
Step 4, removes the code plate (27) between little flange A (3) and platform (26), detects size, ensures that the circularity of ring A (4) is not more than 4mm, and the flatness of little flange A (3) is not more than 2mm; By front shroud (9) and bolt tightening for cover plate frame (6), the good front shroud of leveling (9) is hung on to platform, groove is placed down, draw the position of the 4th gusset (7) in the upper line of front shroud (9), cover plate frame (6) is hung on to front shroud (9) line place, after adjusting to correct position, spot welding is fixed, two cover plate frame symmetries freeze, workpiece is stood up, two interim hangers of balanced welding, leveling, ensures flatness 2mm;
Step 5, by front shroud (9) padded 29mm on platform, flatness is not more than 2mm, hoisting ring B (10) is 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, after spot welding is fixing, freezes, weld high 15mm, leveling front shroud (9);
Step 6, large flange is leveled up, detect with level gauge, flatness is no more than 1mm, detect the 4th gusset (7), the first gusset (14), the second gusset (16), the 3rd gusset (18) the upper surface height apart from flange face, ensure to be highly 344-347mm, control with 6 jack if cannot meet, ensure that its upper surface flatness is no more than 1mm; The workpiece that little flange A (3) and ring A (4) are welded into hangs on the upper surface of large flange (1), adjust position, control it and be no more than 2mm with the concentricity of large flange (1), little flange A (3) flatness is no more than 2mm, spot welding is fixed, the each spot welding 30mm in two of weld seam between each gusset and little flange A (3);
Step 7, lift the first gusset (14), the second gusset (16), the 3rd gusset (18), spot welding is fixed, the fillet weld between first welding gusset and gusset, the then weld seam between welding gusset and little flange A (3);
Step 8, workpiece is hung on to platform, large flange (1) is leveled up, levelness 1mm, press circle that picture line drawing goes out Φ 1850mm and the circle of 6 Φ 820mm according to the center of circle on technique piece, detect and ensure that itself and the concentricity of large flange (1) endoporus are not more than 2mm, inspection declaration after setting-out completes;
Step 9, little flange C (20) is hung on to large flange (1), adjust to setting-out position according to sample dotting punch, fixed in little flange C (20) internal point solid welding, then little flange B (13) is hung on to large flange, adjust to correct position, fixed in little flange B (13) internal point solid welding;
Step 10, workpiece is stood up, weld seam between welding gusset and large flange (1), level up, survey the levelness of large flange (1) with level gauge, ensure to be not more than 2mm, line draws the position of ring C (2) cylindrical shell, by the rough machined size setting-out of inner circle, control concentricity and be not more than 2mm;
Hoisting ring C (2), adjust to setting-out position, the quality inspection of peace matter portion is fixed by rear spot welding, the weld seam of one section of 60mm of every 30 degree spot welding in cylindrical shell, point postwelding adopts multi-pass welding, first enclose back root cleaning, two simultaneously synchronous symmetrical weldings of welder when welding at internal welding one, each welding must form a complete circle, postwelding flaw detection, detects size record, ensures that verticality and the concentricity of cylindrical shell is all no more than 2mm;
Step 11, on little flange A (3) and ring A (4), setting-out draws the position of 6 the 4th gussets (7), and welding the 4th gusset (7) is full by all groove weldings;
Step 12, the workpiece that lifting front shroud (9) becomes with ring B (10) assembly welding, gate ring B (10) lower surface is 487mm with the distance of large flange upper surface, and ring B (10) is not more than 2mm with the concentricity of large flange (1), first front shroud (9) spot welding is fixed, first weld the weld seam between itself and the 4th gusset (7), then the weld seam between weld-ring B (10) and front shroud (9), finally weld the weld seam between front shroud (9) and ring A (4), groove welding is flat and polishing is level and smooth;
Step 13, stands up workpiece to the weld seam welding between the 4th gusset (7) and ring B (10), and groove welding is full;
Step 14, by smooth all whole workpiece weld grindings, handles outward appearance well;
Step 15, the large flange excircle of car, to Φ 3446mm, welds hanger;
Step 10 six, whole removing stress annealing;
Step 10 seven, hangs on cover plate frame (6) by the cover plate processing (5), joins the hole of boring on cover plate frame, tapping;
Step 10 eight, carries out blasting treatment to workpiece, afterwards rust prevention by applying liquid material paint immediately;
Step 10 nine, favourable turn manufacturing procedure;
Step 2 ten, weldment pipe A (21), pipe B (22), pipe C (23).
2. method according to claim 1, is characterized in that: in described step 1, after assembling, spot welding is fixed, spot welding length 30mm; To the weld seam welding between ring D (12) and large flange (1), the clean welded seam area impurity of preweld cleaning, needs two welders about the synchronous welding of ring Central Symmetry when weldering, first use outside CO
2gas shielded arc welding bottoming, back chipping in ring, adopts multi-pass welding; per pass weld seam should fuse good and clean out, thoroughly, occurs that any defect all should remove in time in welding process, and all weld seams require penetrations; postwelding is clean by weld cleaning, and weld seam reaches ultrasonic testing/ ultrasonic examination I level.
3. method according to claim 1, it is characterized in that: in described step 2, weld seam between welding gusset and ring D (12), large flange (1), two welders first burn cross joint about encircling the synchronous welding of D (12) Central Symmetry, rear burning downhand welding, weld seam requires to reach ultrasonic testing/ ultrasonic examination and reaches I level.
4. method according to claim 1, is characterized in that: in 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).
5. method according to claim 1, it is characterized in that: in described step 6, workpiece is stood up also padded, make little flange A (3) above distance podium level be 1.2m, to ring D (12) with little flange A (3) between weld seam welding, elder generation bottoming outside, back chipping in ring, adopt multi-pass welding, ultrasonic testing/ ultrasonic examination is by the weld seam between rear weldering gusset and little flange A (3), the synchronously weldings of two welder's symmetries.
6. method according to claim 1, it is characterized in that: in described step 9, quality inspection check size, ensure that the center of circle of 6 little flanges is in circularity is no more than the circle of 2mm, two symmetrical same parameters of welder synchronously freeze, adopt multi-pass welding, first in little flange B (13), little flange C (20), freeze, then outside back chipping; The rear polishing of having freezed is clean, by the requirement of ultrasonic wave I level, then checks the center of circle size of little flange B (13), little flange C (20), record.
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| CN109209408B (en) * | 2018-10-22 | 2020-04-28 | 大连理工大学 | Method for monitoring strain of cutter head connecting flange of full-face rock tunnel boring machine |
| CN110814566B (en) * | 2019-12-12 | 2021-11-16 | 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 |
| 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) |
| CN117921293B (en) * | 2024-03-21 | 2024-07-05 | 沈阳富创精密设备股份有限公司 | Welding tool and welding method for precise semiconductor flange parts |
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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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