CN1068526A - Spiral lifting assembling method for storage tank - Google Patents
Spiral lifting assembling method for storage tank Download PDFInfo
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- CN1068526A CN1068526A CN 92104135 CN92104135A CN1068526A CN 1068526 A CN1068526 A CN 1068526A CN 92104135 CN92104135 CN 92104135 CN 92104135 A CN92104135 A CN 92104135A CN 1068526 A CN1068526 A CN 1068526A
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- tank
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- 238000000034 method Methods 0.000 title claims abstract description 34
- 238000003860 storage Methods 0.000 title claims abstract description 14
- 238000003466 welding Methods 0.000 claims abstract description 51
- 238000005096 rolling process Methods 0.000 claims abstract description 22
- 229910000831 Steel Inorganic materials 0.000 claims description 18
- 239000010959 steel Substances 0.000 claims description 18
- 230000007704 transition Effects 0.000 claims description 14
- 241000826860 Trapezium Species 0.000 claims description 7
- 230000015572 biosynthetic process Effects 0.000 claims description 4
- 238000009434 installation Methods 0.000 claims description 4
- 238000007796 conventional method Methods 0.000 claims description 3
- 230000013011 mating Effects 0.000 claims description 3
- 230000037396 body weight Effects 0.000 claims description 2
- 238000010276 construction Methods 0.000 description 17
- 238000010586 diagram Methods 0.000 description 5
- 241000209094 Oryza Species 0.000 description 3
- 235000007164 Oryza sativa Nutrition 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 235000009566 rice Nutrition 0.000 description 3
- 230000000630 rising effect Effects 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 208000019901 Anxiety disease Diseases 0.000 description 1
- 230000036506 anxiety Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- RKTYLMNFRDHKIL-UHFFFAOYSA-N copper;5,10,15,20-tetraphenylporphyrin-22,24-diide Chemical compound [Cu+2].C1=CC(C(=C2C=CC([N-]2)=C(C=2C=CC=CC=2)C=2C=CC(N=2)=C(C=2C=CC=CC=2)C2=CC=C3[N-]2)C=2C=CC=CC=2)=NC1=C3C1=CC=CC=C1 RKTYLMNFRDHKIL-UHFFFAOYSA-N 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
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- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The invention relates to a method for assembling and welding wall plates by spirally lifting the wall plates of a storage tank by adopting pulleys. In the method, each wall plate of the lowest tank wall and each wall plate of the uppermost tank wall are both made into a right-angled trapezoid shape, after the lowest tank wall is assembled and welded, the upper end surface of the lowest tank wall is formed into a spiral inclined surface shape, a supporting rolling pulley is arranged on the spiral inclined surface, and the uppermost tank wall is assembled and welded by taking the pulley as a supporting surface. Under the action of external power, the tank wall on the uppermost layer spirally rises, so that a gap is formed at the meshing step of the two tank walls, and the middle wall plate is welded at the gap. The upper-layer wall plate continuously spirally rises to continuously form a gap and is continuously welded. The operating point is at the lower fixed position, so the labor intensity is low, the work efficiency is high, and the safe operation is facilitated.
Description
The present invention is that spiral the hoisting of a kind of wallboard that adopts pulley to make basin assembled the construction method of welding wallboard.
From the fifties to the beginning of the seventies, various large storage tanks all adopt upright method of hull section construction when the assembling welding.As building a wall, a wallboard connects a wallboard toward on base, welding.This method is because solder joint is fixing, and rising gradually, has increased operation easier for like this constructing operation personnel.At present, the steel floating roof tank also adopting said method construction, but the steel arch-roof tank replaces by upside-down method of hull-section construction, and upside-down method of hull-section construction generally has two kinds: air jack-up method and mechanical lifting method, years construction facts have proved, advantages such as it is simple that these two kinds of methods have technology, and work high above the ground is few, and the duration is short, but very big shortcoming is arranged also: the former is in tank body hoists butt joint, if it is bad that air quantity is grasped, careless slightly roof fall accident will take place, running into the power failure tank body can be because loss of buoyance cause crooked or sink; Certain distance (Heave Here is to be distributed on the some spots of tank body circumference) is arranged between the Heave Here of the latter because of mechanical lifting, therefore, the Heave Here is stressed bigger in the middle of hoisting, tank shell has the power of inwardly drawing, and often causes the wallboard bulge, influences the installation quality of wallboard, also have, these two kinds of methods all will be concentrated a considerable amount of electric welding machines, are unfavorable for the reasonable use of equipment, are unfavorable for that also unit in charge of construction organizes and coordinates.
The objective of the invention is to realize a kind of spiral lifting assembly method of storage pot, it also is a kind of upside-down method of hull-section construction, the tank skin spiral is hoisted, thereby operating point is fixed, constructing operation personnel can the saving of labor, laborsaving, labour intensity is low, helps safety in production, installation quality can guarantee, used electric welding machine is few, helps unit in charge of construction and organizes and coordinates.
The present invention realizes by following manner.Conventional row's plate is adopted at the tank deck and jar end, the method for mating formation, welding, and the step of row's plate of tank skin, assembling, welding is as follows:
(1) every wallboard of every wallboard of orlop tank skin and the superiors' tank skin is all made the right-angled trapezium shape that the slope on oblique waist limit all equates, and each base of every wallboard on described each layer tank skin overlaps, can line up a big right-angled trapezium shape.Wallboard between orlop tank skin and the superiors' tank skin, except that two transition wallboards, all make rectangular slab according to a conventional method, two transition wallboards all are quadrangle, wherein three of every wallboard limits all are right-angle side, another limit be slope all and go up most, hypotenuse that the slope on the oblique waist limit of orlop wallboard all equates, all wallboards all are simmered into arcuation.
(2) wallboard of assembling and welding orlop tank skin at the bottom of the jar, and the trapezoidal straight waist limit of every wallboard all joins with at the bottom of the jar, its oblique waist limit all up, behind assembling one circle, the upper surface of orlop tank skin forms the screw inclined plane shape, and forms a step on the wideest base and the narrowest joint, base.
(3) in the upper edge, upper surface of the orlop tank skin hand of spiral one circle supporting rolling pulley is installed.
(4) on the upper edge of the inside and outside wall of orlop tank skin, each is along circumference several baffle plates of welding that evenly distribute respectively.
(5) be bearing-surface with aforesaid supporting rolling pulley, the wallboard of assembling welding the superiors tank skin between the interior outer baffle on the aforesaid orlop tank skin, and the trapezoidal straight waist limit of every wallboard all up, its oblique waist limit all down, behind assembling one circle, the lower surface of the superiors' tank skin forms the screw inclined plane shape, tip upside down on the upper surface of orlop tank skin by aforesaid supporting rolling pulley, and the wideest base on the superiors' tank skin and the narrowest formed step in base and the step of orlop tank skin just in time mesh.
(6) welding tank deck and annex are installed on the superiors' tank skin.
(7) adding under the dynamic action, the spiral rotation on the supporting rolling pulley of the superiors' tank skin is risen, make the step place of the superiors' tank skin and orlop tank skin engagement form vacancy simultaneously, when vacancy during greater than a wallboard, the rotation that stops the superiors' tank skin is risen, in the vacancy transition wallboard is welded on the superiors' tank skin, wherein the step of the hypotenuse of transition wallboard and the superiors' tank skin joins, and then continue to make the superiors' tank skin rotation to rise, vacancy appears again, weld a wallboard again, carrying out repeatedly like this, till reaching design height, welding is another piece transition wallboard at last, wherein the hypotenuse of transition wallboard is reserved, and is left to the step welding of last and orlop tank skin.
(8) after the superiors' tank skin rotation rises to design height, according to tank body weight, in tank skin round several jack of circumference uniform distribution of orlop tank skin, with tank deck and the tank skin jack-up more than the orlop tank skin, remove the supporting rolling pulley then, jack-up is partly put down, weld the seam between orlop tank skin and the tank skin on it again, remove baffle plate at last, whole basin assembling welding is finished.
Further specify again in conjunction with the accompanying drawings with embodiment below.
Accompanying drawing 1 is the tank wall material cutting plan.
Accompanying drawing 2 is the rebound material cutting plan of tank wall.
Accompanying drawing 3 is the assembling welding figure of tank wall.
Accompanying drawing 4 is for reinforcing the schematic diagram of orlop tank skin.
Accompanying drawing 5 is for adding the schematic diagram of channel-section steel piston ring below orlop tank skin top edge.
Accompanying drawing 6 is the schematic diagram of welding baffle plate on the inside and outside wall of orlop tank skin.
Accompanying drawing 7 is the vertical view of accompanying drawing 5.
Accompanying drawing 8 is the front view of supporting rolling pulley.
Accompanying drawing 9 is the side view of supporting rolling pulley.
Accompanying drawing 10 is the schematic diagram that electronic jack is installed on the outer wall of tank skin.
Figure 11 is for adopting the schematic diagram of the above tank skin of jack stand tank deck and orlop tank skin.
Embodiment.Adopt spiral lifting assembly method of storage pot assembling welding 1000m
3Water storage tank.The tank body height is 6.4 meters, and diameter is 15 meters, and wallboard thickness is 6 millimeters, and tank body need play about 17 tons of liter weight.As adopting traditional assembling welding, labour intensity is big, and operation easier is also big, and dangerous again, quality does not guarantee.Adopt method of the present invention just very simple, also very safe, quality can guarantee again.
Conventional row's plate, the method for mating formation, welding are adopted in the tank deck and jar end.Row's plate of tank wall as shown in Figure 1.Have 36 blocks of plates, wherein the orlop wallboard is totally 8, from 36 blocks of plates of the 29th block of plate to the; Totally 8 of the superiors' wallboards, from 8 blocks of plates of first block of plate to the, above-mentioned wallboard is the right-angled trapezium shape.Remaining remains 18 blocks of plates and is rectangular slab except that two transition wallboards.As can be seen from Figure 2, transition wallboard 28,9 respectively has a hypotenuse, and the slope of hypotenuse is that the slope with the oblique waist limit of right-angled trapezium wallboard equates that the angle of promptly tetragonal hypotenuse and dotted line equals the oblique waist limit of right-angled trapezium and the angle of dotted line.Behind row's plate, every wallboard all is simmered into arcuation.
As shown in Figure 3, the wallboard (29 to 36) of assembling and welding orlop tank skin at the bottom of the jar, the upper surface of orlop tank skin forms screw ramp shape in the counterclockwise direction.And mounting support rolling pulley 41 on the end face thereon, be bearing-surface with the supporting rolling pulley, the wallboard (1 to 8) of assembling welding the superiors tank skin.After welding tank deck and annex are installed, adding under the dynamic action, making the spiral rising in the counterclockwise direction of the superiors' tank skin, making the step place 42 of two-layer tank skin engagement simultaneously, forming vacancy, just can carry out the welding of centre housing in the vacancy.
On at the bottom of the jar behind the wallboard of assembling and welding orlop tank skin, adopt supporting steel pipe and steel plate that the wallboard of orlop tank skin is reinforced, as shown in Figure 4, promptly the interior circle along tank skin becomes the angle of inclination to support the orlop tank skin with supporting steel pipe 43 evenly and at intervals with horizontal plane, the two ends of each supporting steel pipe are all distinguished respectively by a bloom 44, are welded on the orlop tank skin and on jar end.Supporting steel pipe generally along interior circle equably at interval 3-5 rice reinforce, arrange.
After orlop tank skin assembling is reinforced, as shown in Figure 5, below the wallboard top edge of orlop tank skin, reinforce a circle is simmered system by channel-section steel piston ring 45 along interior circle.Piston ring is generally at 100 millimeters places of distance wallboard top edge.In addition, if because of the basin diameter is big, wallboard is thin, makes that tank body rigidity is not enough, in this case, also reinforces a circle piston ring in the wallboard lower edge of the superiors' tank skin.
Before the wallboard of assembling welding the superiors tank skin, on the upper edge of the inside and outside wall of orlop tank skin, each is along circumference welding one circle baffle plate respectively, as shown in Figure 6, baffle plate 46 is welded on the inside and outside wall, and as shown in Figure 7, baffle plate 46 is staggered welding on inside and outside wall, and should avoid supporting rolling pulley.
Shown in Figure 9 as Fig. 8, the supporting rolling pulley that is adopted is by roller 47, bearing support plate 48,49 compositions of jig seat, described roller 47 is to be installed on the described bearing support plate 48 in the mode that is rotatably assorted by its roller shaft 50, and bearing support plate 48 is fixedly connected on the described jig seat 49, in use, be will support the upper surface that rolling pulley is installed in the orlop tank skin by jig seat 49, and with the eccentric wheel on the jig seat 49 51 stuck on the orlop tank skin.As can be seen from Figure 8 the wheel face of roller 47 is a concave surface, just in time the superiors' tank skin is snapped in the recessed wheel face, generally speaking, a supporting rolling pulley is being installed between the 2.5-3 rice of every interval on the upper surface of orlop tank skin.
When the wallboard of assembling welding the superiors tank skin, whenever to adorn a wallboard and all inside and outside tank skin, support with pipe respectively temporarily, each piece wallboard at least respectively has two tubes to support at the inside and outside of tank skin, treats that tank deck installs after welding finishes, and is promptly dismountable.
As shown in figure 10, adopt electronic jack as the power source that the spiral rotation of the superiors' tank skin is risen, promptly after tank deck installs, several electronic jacks 52 evenly distribute outside tank skin, adopt 4 electronic jacks in the present embodiment, each electronic jack 52, two ends be welded on the superiors respectively, on the U shaped steel plate 53 on the orlop tank skin, and each electronic jack is all controlled its action by unified switch.The air line distance of U shaped steel plate should guarantee between 6.5-7 rice generally speaking.
Interior outer baffle on the orlop tank skin that rotates the vacancy that is occurred after the rising is installed, and the spacing that requires the baffle plate of the same side is 500 millimeters, and the length overall of flighted rows example herein adds 1 meter for enclosing new wallboard length.
When embedding the new wallboard of installing in the vacancy that the superiors' tank skin and orlop tank skin join, earlier longitudinal joint that the new wallboard of installing is connected with the superiors tank skins and circumferential weld point rotate the top tank body after admittedly once more, and then next piece wallboard is installed then, carry out meanwhile that leg plate is vertical, the welding job of circumferential weld, so successively can be by the mode of continuous productive process until having assembled last piece wallboard.After the wallboard assembling finishes.At uniform several jack of tank skin inner periphery, as shown in figure 11, fixing upper supporting plate 55 on the inwall of the wallboard on seam top, fixing lower carrier plate 56 on the inwall of orlop wallboard, jack 54 with regard to support between upper supporting plate and lower carrier plate, uniform several jack in tank skin like this.With the wallboard jack-up of jack with helically-seamed top, lay down the supporting rolling pulley, make the top wallboard reduce to assigned position after, carry out spot welding, the welding.Remove baffle plate at last, whole basin assembling welding is finished.
This method is through test, the basin of assembly welding, and its quality meets the standard-required of SYT1205-87 " cylindrical steel welding storage tank construction and acceptance specification " fully. Method of the present invention is compared with traditional assembling and welding method and is had the following advantages:
(1) this method is simple, labour intensity is low, and the construction early-stage preparations time is short, construction equipment is simple, because this method is to construct continuously in fixed position, tank bottom, the workmen can make little runs to and fro along tank skin.
(2) reduce the construction machinery machine-team, improve utilization rate of equipment and installations, because constructing operation is to carry out in the fixed position, therefore can near fixing point, concentrate and put, reduced along tank circumference coaming plate operation, in whole work progress, use 2 of electric welding machines, gas welding device 2 covers, radius hang one in dolly, and this compares with conventional method and saves a large amount of construction equipments, man power and material, to reducing construction cost, improve work efficiency and have broad prospects.
(3) can carry out continuous productive process, be convenient to rational division of work, be conducive to improve work efficiency, be suitable for the assurance construction quality.
(4) not limited by narrow field, can accomplish safety in production, because operating point on the fixed position, bottom, is conducive to safety operation.
(5) if the duration anxiety, wallboard, can be designed to the double track spiral and hoist during plate row, can assemble simultaneously at two place's fixing points, greatly shortens and builds the tank cycle.
Method of the present invention can be widely used in the construction to the assembly welding of large-scale water pot, oil tank and industrial tank.
Claims (6)
1, a kind of spiral lifting assembly method of storage pot, conventional row's plate, the method for mating formation, welding are adopted in the tank deck and jar end, it is characterized in that:
(1) every wallboard of every wallboard of orlop tank skin and the superiors' tank skin is all made the right-angled trapezium shape that the slope on oblique waist limit all equates, and each base of every wallboard on described each layer tank skin overlaps, can line up a big right-angled trapezium shape, wallboard between orlop tank skin and the superiors' tank skin, except that two transition wallboards, all make rectangular slab according to a conventional method, two transition wall all are quadrangle, wherein three of every wallboard limits all are right-angle side, another limit be slope all and go up most, the hypotenuse that the slope on the oblique waist limit of orlop wallboard all equates, all wallboards all are simmered into arcuation
(2) wallboard of assembling and welding orlop tank skin at the bottom of the jar, and the trapezoidal straight waist limit of every wallboard all joins with at the bottom of the jar, its oblique waist limit all up, behind assembling one circle, the upper surface of orlop tank skin forms the screw inclined plane shape, and at the wideest base and the narrowest step of joint, base formation
(3) in the upper edge, upper surface of the orlop tank skin hand of spiral one circle supporting rolling pulley is installed,
(4) on the upper edge of the inside and outside wall of orlop tank skin, each is along circumference several baffle plates of welding that evenly distribute respectively,
(5) be bearing-surface with aforesaid supporting rolling pulley, the wallboard of assembling welding the superiors tank skin between the interior outer baffle on the aforesaid orlop tank skin, and the trapezoidal straight waist limit of every wallboard all up, its oblique waist limit all down, behind assembling one circle, the lower surface of orlop tank skin forms the screw inclined plane shape, tip upside down on the upper surface of orlop tank skin by aforesaid supporting rolling pulley, and the wideest base on the superiors' tank skin and the narrowest formed step in base and the step of orlop tank skin just in time mesh.
(6) welding tank deck and annex are installed on the superiors' tank skin,
(7) adding under the dynamic action, the spiral rotation on the supporting rolling pulley of the superiors' tank skin is risen, make the step place of the superiors' tank skin and orlop tank skin engagement form vacancy simultaneously, when vacancy during greater than a wallboard, the rotation that stops the superiors' tank skin is risen, in the vacancy transition wallboard is welded on the superiors' tank skin, wherein the step of the hypotenuse of transition wallboard and the superiors' tank skin joins, and then continue to make the superiors' tank skin rotation to rise, vacancy appears again, weld a wallboard again, carrying out repeatedly like this is till reaching design height, welding is another piece transition wallboard at last, wherein the hypotenuse of transition wallboard is reserved, and is left to the step welding of last and orlop tank skin
(8) after the superiors' tank skin rotation rises to design height, according to tank body weight, in tank skin round the circumference of orlop tank skin, uniform several jack with tank deck and the tank skin jack-up more than the orlop tank skin, are removed the supporting rolling pulley then, jack-up is partly put down, weld the seam between orlop tank skin and the tank body on it again, remove baffle plate at last, whole basin assembling welding is finished.
2, spiral lifting assembly method of storage pot according to claim 1, it is characterized in that adopting electronic jack as the power source that the spiral rotation of the superiors' tank skin is risen, promptly after tank deck installs, several electronic jacks evenly distribute outside tank skin, the two ends of each electronic jack are welded on respectively on the U shaped steel plate on the superiors, the orlop tank skin, and each electronic jack is all controlled its action by unified switch.
3, spiral lifting assembly method of storage pot according to claim 1 and 2, it is characterized in that the supporting rolling pulley that is adopted is made up of roller bearing support plate, jig seat, described roller is to be installed on the described bearing support plate in the mode that is rotatably assorted by its roller shaft, the bearing support plate is fixedly connected on the described jig seat, in use, be will support the upper surface that rolling pulley is installed in the orlop tank skin by the jig seat, and with the eccentric wheel on the jig seat stuck on the orlop tank skin.
4, spiral lifting assembly method of storage pot according to claim 3, after it is characterized in that the wallboard of assembling and welding orlop tank skin at the bottom of the jar, adopt supporting steel pipe and steel plate that the wallboard of orlop tank skin is reinforced, promptly become the angle of inclination to support the orlop tank skin with horizontal plane with supporting steel pipe evenly and at intervals along the interior circle of tank skin, the two ends of each supporting steel pipe all respectively are welded on the orlop tank skin by a bloom respectively and at jar the end.
5, spiral lifting assembly method of storage pot according to claim 4 is characterized in that after orlop tank skin assembling is reinforced, and reinforces a circle is simmered system by channel-section steel piston ring along inner periphery below the wallboard top edge of orlop tank skin.
6, spiral lifting assembly method of storage pot according to claim 5, it is characterized in that when the wallboard of assembling welding the superiors tank skin, whenever, adorn a wallboard and all inside and outside tank skin, support with pipe respectively temporarily, each piece wallboard at least respectively has two tubes to support at the inside and outside of tank skin, after treating that tank deck installation welding finishes, promptly dismountable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92104135 CN1028285C (en) | 1992-06-05 | 1992-06-05 | Positioning and assembling method for welding cylindrical storage tank wall plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92104135 CN1028285C (en) | 1992-06-05 | 1992-06-05 | Positioning and assembling method for welding cylindrical storage tank wall plate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1068526A true CN1068526A (en) | 1993-02-03 |
| CN1028285C CN1028285C (en) | 1995-04-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92104135 Expired - Fee Related CN1028285C (en) | 1992-06-05 | 1992-06-05 | Positioning and assembling method for welding cylindrical storage tank wall plate |
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| Country | Link |
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| CN (1) | CN1028285C (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101269450B (en) * | 2008-05-10 | 2010-10-13 | 无锡华联科技集团有限公司 | The center ring mechanism in the rotary device of the plane segmented production line |
| CN102069307A (en) * | 2010-10-15 | 2011-05-25 | 林德工程（杭州）有限公司 | Method for welding bottom plate of large flat-bottom storage tank |
| CN104668862A (en) * | 2015-02-11 | 2015-06-03 | 中国科学院等离子体物理研究所 | Large-scale double-curve-surface structure manufacturing multipurpose tooling |
| CN105127674A (en) * | 2015-07-09 | 2015-12-09 | 铜陵有色金属集团铜冠建筑安装股份有限公司 | Installation process of deep-cone thickener |
| CN105345288A (en) * | 2015-11-20 | 2016-02-24 | 天津二十冶建设有限公司 | Power-driven chain block combination device for installing desulfurizing tower and installation method |
| CN106736197A (en) * | 2017-03-14 | 2017-05-31 | 王裕迪 | A kind of fastening apparatus when being welded for workpiece |
| CN107309584A (en) * | 2017-03-14 | 2017-11-03 | 王裕迪 | A kind of workpiece welding fastening apparatus |
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- 1992-06-05 CN CN 92104135 patent/CN1028285C/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101269450B (en) * | 2008-05-10 | 2010-10-13 | 无锡华联科技集团有限公司 | The center ring mechanism in the rotary device of the plane segmented production line |
| CN102069307A (en) * | 2010-10-15 | 2011-05-25 | 林德工程（杭州）有限公司 | Method for welding bottom plate of large flat-bottom storage tank |
| CN102069307B (en) * | 2010-10-15 | 2012-08-01 | 林德工程（杭州）有限公司 | Method for welding bottom plate of large flat-bottom storage tank |
| CN104668862A (en) * | 2015-02-11 | 2015-06-03 | 中国科学院等离子体物理研究所 | Large-scale double-curve-surface structure manufacturing multipurpose tooling |
| CN105127674A (en) * | 2015-07-09 | 2015-12-09 | 铜陵有色金属集团铜冠建筑安装股份有限公司 | Installation process of deep-cone thickener |
| CN105127674B (en) * | 2015-07-09 | 2017-06-23 | 铜陵有色金属集团铜冠建筑安装股份有限公司 | A kind of deep wimble thickener mounting process |
| CN105345288A (en) * | 2015-11-20 | 2016-02-24 | 天津二十冶建设有限公司 | Power-driven chain block combination device for installing desulfurizing tower and installation method |
| CN106736197A (en) * | 2017-03-14 | 2017-05-31 | 王裕迪 | A kind of fastening apparatus when being welded for workpiece |
| CN107309584A (en) * | 2017-03-14 | 2017-11-03 | 王裕迪 | A kind of workpiece welding fastening apparatus |
| CN107309584B (en) * | 2017-03-14 | 2018-11-02 | 浙江富拓电力科技有限公司 | A kind of workpiece welding fastening apparatus |
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| Publication number | Publication date |
|---|---|
| CN1028285C (en) | 1995-04-26 |
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