CN107825083A - A kind of wedge bracket structure construction technology - Google Patents
A kind of wedge bracket structure construction technology Download PDFInfo
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- CN107825083A CN107825083A CN201711238503.2A CN201711238503A CN107825083A CN 107825083 A CN107825083 A CN 107825083A CN 201711238503 A CN201711238503 A CN 201711238503A CN 107825083 A CN107825083 A CN 107825083A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
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Abstract
The present invention relates to a kind of wedge bracket structure construction technology, including blanking and cutting, assembling, shell rolling, welding, moulding bed, line and integral constructing precision, gear rack elevating regional structure to be built, and wedge bracket block assembly is built, wedge bracket machining processes.The advantage of the invention is that：Building technology in the present invention passes through blanking and cutting, assembling during being built to wedge bracket, shell rolling, welding, moulding bed, line and integral constructing precision, gear rack elevating regional structure are built, wedge bracket block assembly is built, wedge bracket machining processes are achieved, and rationally correct construction, avoids doing over again, the precision of wedge bracket sectional making is controlled, to ensure build guality.
Description
Technical field
The present invention relates to a kind of wedge bracket, more particularly to a kind of wedge bracket structure construction technology.
Background technology
Wedge bracket is the component closely coupled with spud leg, is the carrier of lowering or hoisting gear, provides guiding for spud leg lifting, plays
Connect the effect of spud leg and main hull.Due to his specific use, its sheet material is mostly high-strength plank, close structure, and segmentation
Required precision is high, and many places need to machine, all complete penetraction and fusion in welding structures.
At present, the manufacturing process of existing wedge bracket, during being constructed, generally there is following to lack for it
Fall into：1. cylinder its precision during being rolled is difficult to；The perpendicularity of 2 gear rack elevating regional structures, linearity, postwelding are put down
Face degree equally accurate is difficult to control；3. ground line-transect line precision, loose tool installation level and linearity are difficult to control；4. tire on cylinder
Positioning precision when positioning and erection welding is difficult to control；5. welding procedure process, welding technique are to the influence factor of deformation；
6. positioning precision during machining is difficult to control.
The content of the invention
The technical problem to be solved in the present invention is to provide a kind of high wedge bracket structure construction technology of accuracy of manufacture.
In order to solve the above technical problems, the technical scheme is that：A kind of wedge bracket structure construction technology, its innovative point
It is：Including blanking and cutting, assembling, shell rolling, welding, moulding bed, line and integral constructing precision, gear rack elevating region knot
Structure is made, and wedge bracket block assembly is built, wedge bracket machining processes.
Further, the wedge bracket step is specially：
a）Blanking and cutting：The blanking of all sheet material performs in strict accordance with drawing and cutting instruction, should be by sheet material after blanking
Batch number and material class number are transplanted on each piece of part with more steel seal, are beaten in remote edges of boards and are easy to the position checked
On, before cutting, precision correction should be carried out to numerical control cutting machine, cutting cutting torch and walking track are checked, selected according to thickness of slab
Correct cutting parameter is selected, ensures part cutting accuracy, avoids the generation of the off-gage phenomenons such as short chi；
b）Assembling：Assembly crewman is first tested to all supplied materials, including piece number, thickness, material, blank size, surface are put down
Whole degree, jigsaw is carried out after having inspected, during two or more than two board material splice, dimensional gaughing, bag are carried out according to drawing
Length and width, diagonal, sheet material edge linearity are included, satisfaction after requiring rule and positioning welding, cornerwise dimensional discrepancy≤
2.0mm；
c）Shell rolling：Flow is, numerical control without surplus cutting stock → grade division line of barrel 4 → line is reviewed → output circumferential weld and
Longitudinal joint groove → press pre-bending → veneer reeling machine roll bending → survey inner circle size → correction and position → spot welding and weld preceding check → beat
Back welding → school circle → shell ring final inspection；
d）Welding：According to quality of parent material, thickness, welding position and direction, suitable welding process flow is selected；
e）Moulding bed, line and integral constructing precision：Wedge bracket needs two moulding beds of pre-production：Before moulding bed supports, it should mark
Corresponding ground line-transect, it includes：Center line, line, cylinder docking location line are examined, various regions line-transect should have enough extending lengths,
Land used line-transect carries out review size after ensureing wedge bracket sectional making, and suppressing for ground line-transect is drawn and should drawn by special line personnel
Line, carry out and be easy to check and accept and mark not easy to be lost identifies, and report QC；The required precision of ground line-transect is strictly rule accuracy standard,
It must be strict controlled in the range of standard；
f）Gear rack elevating regional structure is built：First build the special installation moulding bed of sufficiently rigid gear rack elevating regional structure, moulding bed
Size is 14000 × 10000, then makes supporting construction, then moulding bed in supporting construction is integrally assembled with tube structure；
g）Wedge bracket block assembly is built：Shell ring gets inside and outside processing model ready without being rolled after surplus blanking, and shell ring inner diameter is public
Difference control machines rear each shell ring longitudinal joint alignment and only does one of backing welding, inspection after welding within 3332 ± 3.0mm of Φ
Return after circle terminates and inner ring reinforcement is installed, one stiffening ring of installation in each shell ring；Sequentially upper roller frame docks five one group of shell rings
Circumferential weld, longitudinal joint on one wire, and stops length direction surplus by drawing during docking；After the completion of shell ring docking, reference
Conveyor front barrel quarterline position, survey again after whole detection and draw a quarterline, determine cylinder home position；Cylinder inboard wall is thick
Spend 8mm friction plates positioning welding equipment；The upper total group moulding bed positioning on the basis of quarterline and home position, longitudinal water is required during positioning
Pingdu is controlled within ± 1.0mm, and short transverse quarterline degree control is within ± 1.0mm；Cylinder needs the position that is open
Put line and inspection declaration it is qualified after, semi-automatic Cutting platform is set up, with horizontal direction to cylinder cutting openings, it is desirable to first cutting on one side
Opening and reinforced in aperture position using horse plate, measure barrel distortion, then cut the opening on other one side again；Rack is installed
Regional structure is lifted, when installation positions, controls the spacing between motor installation position center line and Barrel alignment 2145
Within ± 1.0, positioning terminate and inspection declaration it is qualified after, the symmetrical multi-pass welding in both sides carries out welding procedure；
h）Wedge bracket machines：After wedge bracket assembly work terminates, overall deformation is measured, is surveyed and drawn again according to practical distortion situation
Structure quartering center line, the center line hand to machining factory as mach position baseline by quality inspection；Wedge bracket machine
Processing before by above-mentioned center line positioning after, it is necessary to through detection it is qualified could moving knife, control left and right center line levelness ±
Within 1.0mm, upper and lower central axis degree is within ± 1.0mm.
Further, in the step a, all steel plates have the material certificate of classification society approval, and supplied materials needs to press
Requirement according to CSQS checks whether steel plate flatness and surface have pit defect；Steel plate used in wedge bracket
It is both needed to carry out shotblasting or derusting by sandblasting processing, surface roughness reaches SA2.5 level standards, car sprayed after surface derusting
Between priming paint protect.
Further, in the step b, line requirement is：Datum line, inspection line line tolerance are ± 0.5mm, and line should
Using scriber, line should be clear, and stamps foreign punch mark, and protection is should give in work progress.
Further, in the step c, cylinder should make Inner arc model before rolling, and model arc length length cannot be less than
1000mm, inspection plate surface quality and cleaning, particularly cut edge cut whether slag is cleaned out, in order to avoid in pressing process
In miscellaneous slag scratch mother metal, steel plate enters roll before must polish longitudinal joint butting grooves and more than edge 25mm, in order to avoid influence welding
Quality, it must be coordinated when rolling the cylinder of major diameter using crane, in order to avoid because the deadweight of steel plate causes molded workpiece to become
Shape, when cylinder roll-forming reaches design requirement, adjust the unfitness of butt joint and gap, steel plate or so unfitness of butt of longitudinal joint counterpart
≤ 1mm, thickness unfitness of butt joint≤1mm, spot welding is carried out after qualified, spot welding length is not less than 20mm, and spacing is not more than 300mm, to protect
Card shell ring is welded when being hung from Samsung roller and will not ftractureed.
Further, in the step d, before welding butt welding mouth derusted, removed contamination, being dehumidified, sharpened edge prepare and by
It is required that inspection declaration；The wlding of tack welding should match with mother metal, and welding parameter and requirement refer to welding procedure specification (WPS), the welding of tack welding
Length >=50mm；Welding equipment run-on tab and arc-extinguishing plate, material and the mother of its thickness are needed using the butting grooves both sides of Lincoln weld
Material is identical, the groove consistent appearance of the groove and mother metal of run-on tab and arc-extinguishing plate；If multi-pass welding time interval is longer, under
Need to derust and preheat again before once welding；Pay attention to the release of post-weld stress.
Further, in the step e, required precision is：Cylinder interior diameter tolerance is -2 ~+4mm, and cylinder ovality is public
Difference ± 5mm, ground sample line tolerance≤2mm, wedge bracket vertical line degree≤8mm, Standard linearity≤2mm, Standard
Perpendicularity≤2mm, roll bending cutting length and width ± 2.0mm, roll bending blanking diagonal deviation≤3mm.
Further, in the step f, supporting construction is made as：The supporting construction includes a bottom plate and a pair
Be distributed in side plate A, the side plate B of bottom plate upper end both sides side by side, separated between side plate A and side plate B by internal partition group, it is internal every
The dividing plate that plate group is distributed by several long axis directions along side plate A collectively constitutes, and the internal partition is the sky of a both ends open
Heart rectangular parallelepiped structure, baffle plate is also equipped with side plate A and side plate B outboard end, when making, first determined moulding bed on side plate A
Position installation, weldering frontal plane degree require control within 3mm；The independent welding of internal partition group makes, pays attention to control form inside every
The spacing of the upper and lower surfaces plate of plate, moulding bed welding equipment on internal partition assembling structure；The vertical installation positioning of internal partition group should control
Size of the panel away from side plate A edges；Side plate B installation positioning, within 3mm, side plate B edges will for control before the weldering of side plate B flatnesses
Alignd with bottom plate assembling；Bottom plate is installed, and bottom plate weldering frontal plane degree control is within 3mm, and longitudinal seam is using symmetrical more during welding
Road welds, and controls welding deformation；After bottom plate has welded, baffle plate is installed in side plate A and side plate B outside, after welding job terminates,
Integral planar degree and camber data are measured, correct side plate center line, the supporting construction made is then prepared into upper moulding bed and cylinder
Structure integrally assembles.
The advantage of the invention is that：Building technology in the present invention to wedge bracket during building, under
Material and cutting, assembling, shell rolling, welding, moulding bed, line and integral constructing precision, gear rack elevating regional structure is built, Gu stake
Frame block assembly is built, and wedge bracket machining processes are achieved, and rationally correct construction, avoids doing over again, control wedge bracket segmentation
The precision of making, to ensure build guality.
In cylinder during being rolled, coordinate Inner arc model, and to the size at longitudinal joint butting grooves and edge,
The unfitness of butt joint of longitudinal joint counterpart and gap are reasonably controlled, it is achieved thereby that the requirement that the precision of shell rolling is high.
When moulding bed makes, by cylinder interior diameter, cylinder ovality, sample line, wedge bracket vertical line degree, knot
Structure assembling linearity, Standard perpendicularity, roll bending cutting length and width and roll bending blanking diagonal deviation carry out rational
Control, ensure that ground line-transect line precision, loose tool installation level and straightness error are small.
Construction for gear rack elevating regional structure, pass through the plane to the side plate A in supporting construction, side plate B and bottom plate
The control of degree and internal partition and the control of the spacing at side plate edge, ensure that overall perpendicularity, linearity, postwelding are put down
Face degree equally accurate is high, and tire positioning and positioning precision during erection welding are high on cylinder；
In machining, by reasonably being controlled left and right center line levelness and upper and lower central axis degree, so as to
It ensure that overall positioning precision is high.
Brief description of the drawings
The present invention is further detailed explanation with reference to the accompanying drawings and detailed description.
Fig. 1 is the schematic diagram of China and foreign countries' radius gauge of the present invention.
Fig. 2 is the schematic diagram of Inner arc model in the present invention.
Fig. 3 is the schematic diagram of moulding bed in the present invention.
Fig. 4 is latus inframedium A of the present invention schematic diagram.
Fig. 5 is the schematic diagram of internal partition in the present invention.
Fig. 6 is the connection diagram of internal partition and side plate A in the present invention.
Fig. 7 is schematic diagram of the panel of internal partition away from side plate A4 edges in the present invention.
Fig. 8 is latus inframedium B of the present invention scheme of installation.
Fig. 9 is latus inframedium B of the present invention and side plate A position view.
Figure 10 is the scheme of installation of bottom plate of the present invention.
Figure 11 is the scheme of installation of baffle plate in the present invention.
Figure 12 is the schematic diagram of supporting construction in the present invention.
Figure 13 is the schematic diagram of shell ring in the present invention.
Figure 14 is shell ring Butt Assembling schematic diagram in the present invention.
Figure 15 is the schematic diagram of the quarterline on shell ring in the present invention.
Figure 16 is shell ring welding sequence schematic diagram in the present invention.
Figure 17 is that the overall schematic after the completion of people's welding is counted in the present invention.
Embodiment
The following examples can make professional and technical personnel that the present invention be more fully understood, but therefore not send out this
It is bright to be limited among described scope of embodiments.
The wedge bracket structure construction technology of the present invention is implemented by following step：
The first step, blanking and cutting：The blanking of all sheet material performs in strict accordance with drawing and cutting instruction, after blanking, Ying Jiang
The batch number and material class number of sheet material are transplanted on each piece of part with more steel seal, are beaten in remote edges of boards and are easy to what is checked
On position, before cutting, precision correction should be carried out to numerical control cutting machine, cutting cutting torch and walking track be checked, according to plate
Thickness selects correct cutting parameter, ensures part cutting accuracy, avoids the generation of the off-gage phenomenons such as short chi.
In above-mentioned steps, all steel plates have the material certificate of classification society approval, and supplied materials is needed according to Made in China
The requirement of ship quality standard checks whether steel plate flatness and surface have pit defect；Steel plate used in wedge bracket is both needed to carry out
Shotblasting or derusting by sandblasting processing, surface roughness reach SA2.5 level standards, want painting workshop priming paint to protect after surface derusting
Shield.
Second step, assembling：Assembly crewman first tests to all supplied materials, including piece number, thickness, material, blanking chi
Very little, surface smoothness, jigsaw is carried out after having inspected, during two or more than two board material splice, chi is carried out according to drawing
Very little inspection, including length and width, diagonal, sheet material edge linearity, satisfaction after requiring rule and positioning welding, cornerwise
Dimensional discrepancy≤2.0mm.
In above-mentioned steps, line requirement is：Datum line, line line tolerance is examined to be ± 0.5mm, line should be used and drawn
Pin, line should be clear, and stamps foreign punch mark, and protection is should give in work progress.
3rd step, shell rolling：Flow is, numerical control reviews without the surplus cutting stock → grade of barrel 4 division line → line →
Output and circumferential weld and longitudinal joint groove → press pre-bending → veneer reeling machine roll bending → survey inner circle size → correction and position → spot welding and weld
Preceding inspection → backing welding → school circle → shell ring final inspection.
In above-mentioned steps, cylinder should make external arc model 1, Inner arc model 2 before rolling, as shown in Figure 1 and Figure 2, interior
The model arc length length of radius gauge 2 cannot be less than 1000mm, check plate surface quality and cleaning, particularly cut edge
Cut whether slag is cleaned out, in order to avoid miscellaneous slag scratches mother metal in pressing process, steel plate enters roll before must polish longitudinal joint docking
Groove and more than edge 25mm, in order to avoid influenceing welding quality, it must be coordinated when rolling the cylinder of major diameter using crane, Yi Mianyou
Cause molded workpiece deformation, when cylinder roll-forming reaches design requirement, adjustment longitudinal joint counterpart in the deadweight of steel plate
Unfitness of butt joint and gap, steel plate or so unfitness of butt≤1mm, thickness unfitness of butt joint≤1mm, spot welding, spot welding length are carried out after qualified
Not less than 20mm, spacing is not more than 300mm, to weld and will not ftracture when ensureing that shell ring is hung from Samsung roller.Carried out in cylinder
During rolling, coordinate Inner arc model, and to the size at longitudinal joint butting grooves and edge, the unfitness of butt joint of longitudinal joint counterpart and
Gap is reasonably controlled, it is achieved thereby that the requirement that the precision of shell rolling is high.
4th step, welding：According to quality of parent material, thickness, welding position and direction, suitable welding process flow is selected.
In above-mentioned steps, butt welding mouth is derusted, removed contamination, being dehumidified before welding, sharpened edge prepares and inspection declaration on request；
The wlding of tack welding should match with mother metal, and welding parameter and requirement refer to welding procedure specification (WPS), and the weld length of tack welding >=
50mm；Welding equipment run-on tab and arc-extinguishing plate are needed using the butting grooves both sides of Lincoln weld, the material of its thickness is identical with mother metal,
The groove consistent appearance of the groove and mother metal of run-on tab and arc-extinguishing plate；If multi-pass welding time interval is longer, welded next time
Need to derust and preheat again before connecing；Pay attention to the release of post-weld stress.
5th step, moulding bed, line and integral constructing precision：Wedge bracket needs two moulding beds of pre-production：Moulding bed supports
Before, corresponding ground line-transect should be marked, it includes：Center line, line is examined, cylinder docking location line, various regions line-transect should have enough
Extending length, land used line-transect carries out review size after ensureing wedge bracket sectional making, and the suppressing of ground line-transect is drawn should be by special line
Personnel are rule, and are carried out and are easy to check and accept and mark not easy to be lost identifies, and report QC；The required precision of ground line-transect is strictly rule
Accuracy standard, it is necessary to be strict controlled in the range of standard.
In above-mentioned steps, required precision is：Cylinder interior diameter tolerance is -2 ~+4mm, cylinder ovality tolerance ± 5mm,
Ground sample line tolerance≤2mm, wedge bracket vertical line degree≤8mm, Standard linearity≤2mm, Standard perpendicularity≤
2mm, roll bending cutting length and width ± 2.0mm, roll bending blanking diagonal deviation≤3mm.When moulding bed makes, by cylinder
Interior diameter, cylinder ovality, sample line, wedge bracket vertical line degree, Standard linearity, Standard perpendicularity, volume
Plate cutting length and width and roll bending blanking diagonal deviation are reasonably controlled, ensure that ground line-transect line precision,
Loose tool installation level and straightness error are small.
6th step, gear rack elevating regional structure are built：First build the sufficiently rigid special installation of gear rack elevating regional structure
Moulding bed 3, as shown in figure 3, moulding bed size is 14000 × 10000, supporting construction is then made, as shown in figure 12, then knot will be supported
Moulding bed integrally assembles with tube structure on structure.
Supporting construction is made as：Supporting construction includes a bottom plate 7 and is distributed in the upper end both sides of bottom plate 7 side by side a pair
Side plate A4, side plate B6, are separated between side plate A4 and side plate B6 by internal partition group, and internal partition group is by several along side plate A4
Long axis direction distribution dividing plate 5 collectively constitute, internal partition 5 be a both ends open hollow rectangular parallelepiped structure, in side plate A4
Baffle plate 8 is also equipped with side plate B6 outboard end.
When making, first by moulding bed location and installation on side plate A4, weldering frontal plane degree requires control within 3mm, internal
The independent welding of dividing plate group makes, and pays attention to that control forms the spacing of the upper and lower surfaces plate of internal partition 5, as shown in figure 5, inside every
Moulding bed welding equipment on plate assembling structure, as shown in fig. 6, chi of the control panel away from side plate A4 edges is answered in the vertical installation positioning of internal partition group
It is very little, as shown in Figure 7；Side plate B6 installation positioning, as shown in figure 8, control is within 3mm before the weldering of side plate B flatnesses, side plate B6 edges
Will be alignd assembling with bottom plate, as shown in Figure 9；Bottom plate 7 is installed, and bottom plate 7 welds the control of frontal plane degree within 3mm, longitudinal direction during welding
Weld seam uses symmetrical multi-pass welding, controls welding deformation；After bottom plate 7 has welded, install and keep off in side plate A4 and side plate B6 outside
Plate 8, after welding job terminates, integral planar degree and camber data are measured, correct side plate center line, the support knot that then will be made
Structure prepares upper moulding bed 3 and integrally assembled with tube structure.Construction for gear rack elevating regional structure, by supporting construction
The control of side plate A, side plate B and bottom plate flatness and internal partition and the control of the spacing at side plate edge, are ensured that whole
The perpendicularity of body, linearity, postwelding flatness equally accurate are high, and tire positioning and positioning precision during erection welding are high on cylinder；
7th step, wedge bracket block assembly are built：Shell ring 10 gets inside and outside processing model, shell ring 10 ready without being rolled after surplus blanking
Inner diameter allowance control within 3332 ± 3.0mm of Φ, the longitudinal joint for machining rear each shell ring 10 is neat to 11 and only do
One of backing welding, inspection after welding return installation inner ring 9 after circle terminates and strengthened, one stiffening ring of installation in each shell ring, such as Figure 13 institutes
Show；Five 10 1 groups of shell rings sequentially upper roller frame docking circumferential weld, longitudinal joint on one wire, and is stopped by drawing during docking
Length direction surplus, as shown in figure 14；Shell ring 10 dock after the completion of, with reference to conveyor front barrel quarterline position, whole detection
Survey again afterwards and draw quarterline, determine cylinder home position, as shown in figure 15；Cylinder inboard wall thickness 8mm friction plates position welding equipment；
The upper total group moulding bed positioning on the basis of quarterline and home position, require during positioning the control of vertical equity degree ± 1.0mm it
Interior, short transverse quarterline degree control is within ± 1.0mm；Cylinder need aperture position line and inspection declaration it is qualified after,
Semi-automatic Cutting platform is set up, with horizontal direction to cylinder cutting openings, it is desirable to first cut the opening on one side and in aperture position
Reinforced using horse plate, measure barrel distortion, then cut the opening on other one side again；Gear rack elevating regional structure, installation are installed
During positioning, the spacing between motor installation position center line and Barrel alignment is controlled within 2145 ± 1.0, positioning terminates
And after inspection declaration is qualified, the symmetrical multi-pass welding in both sides carries out welding procedure, and welding sequence is as shown in figure 16, is formed after the completion of welding as schemed
State shown in 17.
8th step, wedge bracket machining：After wedge bracket assembly work terminates, overall deformation is measured, according to practical distortion feelings
Condition surveys check off structure quartering center line again, and the center line hands to machining as mach position baseline by quality inspection
Factory；After the preceding positioning by above-mentioned center line of wedge bracket machining, it is necessary to by detecting qualified ability moving knife, control left and right center line water
Pingdu is within ± 1.0mm, and upper and lower central axis degree is within ± 1.0mm.In machining, by left and right center line water
Pingdu and upper and lower central axis degree are reasonably controlled, and ensure that overall positioning precision is high.
Building technology in the present invention passes through blanking and cutting, assembling, cylinder during being built to wedge bracket
Rolling, weld, moulding bed, line and integral constructing precision, gear rack elevating regional structure is built, and wedge bracket block assembly is built, Gu
Pile frame machining processes are achieved, and rationally correct construction, avoids doing over again, and the precision of wedge bracket sectional making is controlled, to ensure
Build guality.
It should be understood by those skilled in the art that the present invention is not limited to the above embodiments, above-described embodiment and explanation
Merely illustrating the principles of the invention described in book, without departing from the spirit and scope of the present invention, the present invention also have
Various changes and modifications, these changes and improvements all fall within the protetion scope of the claimed invention.The claimed scope of the invention
By appended claims and its equivalent thereof.
Claims (8)
- A kind of 1. wedge bracket structure construction technology, it is characterised in that：Including blanking and cutting, assembling, shell rolling, welding, tire Frame, line and integral constructing precision, gear rack elevating regional structure are built, and wedge bracket block assembly is built, wedge bracket machining work Sequence.
- 2. wedge bracket structure construction technology according to claim 1, it is characterised in that：The wedge bracket step is specially：a）Blanking and cutting：The blanking of all sheet material performs in strict accordance with drawing and cutting instruction, should be by sheet material after blanking Batch number and material class number are transplanted on each piece of part with more steel seal, are beaten in remote edges of boards and are easy to the position checked On, before cutting, precision correction should be carried out to numerical control cutting machine, cutting cutting torch and walking track are checked, selected according to thickness of slab Correct cutting parameter is selected, ensures part cutting accuracy, avoids the generation of the off-gage phenomenons such as short chi；b）Assembling：Assembly crewman is first tested to all supplied materials, including piece number, thickness, material, blank size, surface are put down Whole degree, jigsaw is carried out after having inspected, during two or more than two board material splice, dimensional gaughing, bag are carried out according to drawing Length and width, diagonal, sheet material edge linearity are included, satisfaction after requiring rule and positioning welding, cornerwise dimensional discrepancy≤ 2.0mm；c）Shell rolling：Flow is, numerical control without surplus cutting stock → grade division line of barrel 4 → line is reviewed → output circumferential weld and Longitudinal joint groove → press pre-bending → veneer reeling machine roll bending → survey inner circle size → correction and position → spot welding and weld preceding check → beat Back welding → school circle → shell ring final inspection；d）Welding：According to quality of parent material, thickness, welding position and direction, suitable welding process flow is selected；e）Moulding bed, line and integral constructing precision：Wedge bracket needs two moulding beds of pre-production：Before moulding bed supports, it should mark Corresponding ground line-transect, it includes：Center line, line, cylinder docking location line are examined, various regions line-transect should have enough extending lengths, Land used line-transect carries out review size after ensureing wedge bracket sectional making, and suppressing for ground line-transect is drawn and should drawn by special line personnel Line, carry out and be easy to check and accept and mark not easy to be lost identifies, and report QC；The required precision of ground line-transect is strictly rule accuracy standard, It must be strict controlled in the range of standard；f）Gear rack elevating regional structure is built：First build the special installation moulding bed of sufficiently rigid gear rack elevating regional structure, moulding bed Size is 14000 × 10000, then makes supporting construction, then moulding bed in supporting construction is integrally assembled with tube structure；g）Wedge bracket block assembly is built：Shell ring gets inside and outside processing model ready without being rolled after surplus blanking, and shell ring inner diameter is public Difference control machines rear each shell ring longitudinal joint alignment and only does one of backing welding, inspection after welding within 3332 ± 3.0mm of Φ Return after circle terminates and inner ring reinforcement is installed, one stiffening ring of installation in each shell ring；Sequentially upper roller frame docks five one group of shell rings Circumferential weld, longitudinal joint on one wire, and stops length direction surplus by drawing during docking；After the completion of shell ring docking, reference Conveyor front barrel quarterline position, survey again after whole detection and draw a quarterline, determine cylinder home position；Cylinder inboard wall is thick Spend 8mm friction plates positioning welding equipment；The upper total group moulding bed positioning on the basis of quarterline and home position, longitudinal water is required during positioning Pingdu is controlled within ± 1.0mm, and short transverse quarterline degree control is within ± 1.0mm；Cylinder needs the position that is open Put line and inspection declaration it is qualified after, semi-automatic Cutting platform is set up, with horizontal direction to cylinder cutting openings, it is desirable to first cutting on one side Opening and reinforced in aperture position using horse plate, measure barrel distortion, then cut the opening on other one side again；Rack is installed Regional structure is lifted, when installation positions, controls the spacing between motor installation position center line and Barrel alignment 2145 Within ± 1.0, positioning terminate and inspection declaration it is qualified after, the symmetrical multi-pass welding in both sides carries out welding procedure；h）Wedge bracket machines：After wedge bracket assembly work terminates, overall deformation is measured, is surveyed and drawn again according to practical distortion situation Structure quartering center line, the center line hand to machining factory as mach position baseline by quality inspection；Wedge bracket machine Processing before by above-mentioned center line positioning after, it is necessary to through detection it is qualified could moving knife, control left and right center line levelness ± Within 1.0mm, upper and lower central axis degree is within ± 1.0mm.
- 3. wedge bracket structure construction technology according to claim 2, it is characterised in that：In the step a, all steel plate tools Have a material certificate of classification society approval, and supplied materials need according to the requirement of CSQS check steel plate flatness and Whether surface has pit defect；Steel plate used in wedge bracket is both needed to carry out shotblasting or derusting by sandblasting processing, surface are thick Rugosity reaches SA2.5 level standards, wants painting workshop priming paint to protect after surface derusting.
- 4. wedge bracket structure construction technology according to claim 2, it is characterised in that：In the step b, line requires For：Datum line, line line tolerance is examined to be ± 0.5mm, line should use scriber, and line should be clear, and stamps foreign punch mark, applies Protection is should give during work.
- 5. wedge bracket structure construction technology according to claim 2, it is characterised in that：In the step c, before cylinder rolls Inner arc model should be made, model arc length length cannot be less than 1000mm, checks plate surface quality and cleaning, particularly cuts Edge cuts whether slag is cleaned out, in order to avoid miscellaneous slag scratches mother metal in pressing process, steel plate must polish vertical into before rolling Butting grooves and more than edge 25mm are stitched, in order to avoid influenceing welding quality, must be coordinated when rolling the cylinder of major diameter using crane, In order to avoid because the deadweight of steel plate causes molded workpiece deformation, when cylinder roll-forming reaches design requirement, longitudinal joint is adjusted The unfitness of butt joint of counterpart and gap, steel plate or so unfitness of butt≤1mm, thickness unfitness of butt joint≤1mm, spot welding, point are carried out after qualified Weldering length is not less than 20mm, and spacing is not more than 300mm, to weld and will not ftracture when ensureing that shell ring is hung from Samsung roller.
- 6. wedge bracket structure construction technology according to claim 2, it is characterised in that：In the step d, butt welding before welding Mouth is derusted, removed contamination, being dehumidified, sharpened edge prepares and inspection declaration on request；The wlding of tack welding should match with mother metal, welding ginseng Number and requirement refer to welding procedure specification (WPS), weld length >=50mm of tack welding；Using the butting grooves both sides of Lincoln weld Welding equipment run-on tab and arc-extinguishing plate are needed, the material of its thickness is identical with mother metal, the groove of the groove and mother metal of run-on tab and arc-extinguishing plate Consistent appearance；If multi-pass welding time interval is longer, need to derust and preheat again before weld next time；Pay attention to post-weld stress Release.
- 7. wedge bracket structure construction technology according to claim 2, it is characterised in that：In the step e, required precision For：Cylinder interior diameter tolerance is -2 ~+4mm, cylinder ovality tolerance ± 5mm, ground sample line tolerance≤2mm, and wedge bracket is vertically straight Dimension≤8mm, Standard linearity≤2mm, Standard perpendicularity≤2mm, roll bending cutting length and width ± 2.0mm, Roll bending blanking diagonal deviation≤3mm.
- 8. wedge bracket structure construction technology according to claim 2, it is characterised in that：In the step f, supporting construction It is made as：The supporting construction includes a bottom plate and a pair of side plate A, the side plate B for being distributed in bottom plate upper end both sides side by side, side plate Separated between A and side plate B by internal partition group, the dividing plate that internal partition group is distributed by several long axis directions along side plate A Collectively constitute, the internal partition is the hollow rectangular parallelepiped structure of a both ends open, is also pacified in side plate A and side plate B outboard end Equipped with baffle plate, when making, require control within 3mm moulding bed location and installation on side plate A, weldering frontal plane degree first；It is internal The independent welding of dividing plate group makes, and notices that control forms the spacing of the upper and lower surfaces plate of internal partition, internal partition assembling structure Upper moulding bed welding equipment；Size of the control panel away from side plate A edges is answered in the vertical installation positioning of internal partition group；Side plate B installation positioning, side plate Within 3mm, side plate B edges will align assembling with bottom plate for control before the weldering of B flatnesses；Bottom plate is installed, bottom plate weldering frontal plane degree control System is within 3mm, and longitudinal seam use symmetrical multi-pass welding, control welding deformation during welding；After bottom plate has welded, in side plate A Baffle plate is installed with side plate B outside, after welding job terminates, measures integral planar degree and camber data, corrects side plate center line, Then the supporting construction made is prepared into upper moulding bed integrally to assemble with tube structure.
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| CN109366099A (en) * | 2018-10-30 | 2019-02-22 | 中国冶集团有限公司 | Abnormal-shaped screw body production method |
| CN109604980A (en) * | 2018-11-08 | 2019-04-12 | 武汉船用机械有限责任公司 | A kind of manufacturing method of long cylindrical mould structural member |
| CN110253045A (en) * | 2019-06-27 | 2019-09-20 | 中船黄埔文冲船舶有限公司 | A kind of truss-like hydraulic lift wedge bracket method for boring hole |
| CN110625193A (en) * | 2019-09-30 | 2019-12-31 | 中国船舶重工集团柴油机有限公司 | Cutting method, system and processing system for air port of cylindrical scavenging air box |
| CN110789728A (en) * | 2019-11-06 | 2020-02-14 | 北京空间技术研制试验中心 | Method for assembling and positioning composite material structure for aircraft |
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| CN110789728B (en) * | 2019-11-06 | 2021-04-16 | 北京空间技术研制试验中心 | Method for assembling and positioning composite material structure for aircraft |
| CN112427888A (en) * | 2020-11-04 | 2021-03-02 | 陕西广大重型机械有限公司 | Machining process for fan shell |
| CN112427888B (en) * | 2020-11-04 | 2023-12-12 | 陕西广大重型机械有限公司 | Fan shell processing technology |
| CN115781182A (en) * | 2022-11-16 | 2023-03-14 | 中建五洲工程装备有限公司 | Truss tower switching section and manufacturing method thereof |
| CN117415572A (en) * | 2023-12-19 | 2024-01-19 | 启东中远海运海洋工程有限公司 | Pile fixing frame manufacturing process suitable for self-elevating platform ship |
| CN117415572B (en) * | 2023-12-19 | 2024-03-15 | 启东中远海运海洋工程有限公司 | Pile fixing frame manufacturing process suitable for self-elevating platform ship |
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Application publication date: 20180323 |