CN114084311A - High-precision installation method for full-slewing device - Google Patents
High-precision installation method for full-slewing device Download PDFInfo
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- CN114084311A CN114084311A CN202111610588.9A CN202111610588A CN114084311A CN 114084311 A CN114084311 A CN 114084311A CN 202111610588 A CN202111610588 A CN 202111610588A CN 114084311 A CN114084311 A CN 114084311A
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- 238000009434 installation Methods 0.000 title claims abstract description 29
- 238000000034 method Methods 0.000 title claims abstract description 22
- 238000003801 milling Methods 0.000 claims abstract description 19
- 238000003466 welding Methods 0.000 claims abstract description 17
- 238000005520 cutting process Methods 0.000 claims abstract description 16
- 238000003754 machining Methods 0.000 claims description 17
- 238000007689 inspection Methods 0.000 claims description 12
- 238000005553 drilling Methods 0.000 claims description 3
- 238000007789 sealing Methods 0.000 abstract description 5
- 238000010276 construction Methods 0.000 abstract description 3
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B73/00—Building or assembling vessels or marine structures, e.g. hulls or offshore platforms
- B63B73/30—Moving or transporting modules or hull blocks to assembly sites, e.g. by rolling, lifting or floating
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B73/00—Building or assembling vessels or marine structures, e.g. hulls or offshore platforms
- B63B73/40—Building or assembling vessels or marine structures, e.g. hulls or offshore platforms characterised by joining methods
- B63B73/43—Welding, e.g. laser welding
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- Combustion & Propulsion (AREA)
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- Transportation (AREA)
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- Optics & Photonics (AREA)
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Abstract
The invention aims to provide a high-precision mounting construction method for a full-slewing device, which is characterized in that a steering oar base is positioned by primary bracing wire, a T-shaped toggle plate is matched for temporary fixing, a joint of a cylinder body and a bottom plate is welded while fixing, welding and adjustment and fixing are carried out simultaneously, fine bracing wire is carried out on a base flange, the plane milling processing amount is determined, and a portable mobile plane milling machine is used for carrying out on-site cutting on the base flange according to the design requirement so as to meet the requirements of steering oar mounting quality and sealing reliability; the existing construction method is abandoned, the method has the characteristics of saving labor, improving work efficiency and saving expensive transportation investment, installation procedures are reduced, shipbuilding cost is reduced, and shipbuilding period is shortened. The invention is applied to the technical field of installation of the steering oar device.
Description
Technical Field
The invention relates to the technical field of rudder propeller device installation, in particular to a high-precision installation method for a full-slewing device.
Background
The full-rotation rudder propeller device is increasingly adopted in tugboats, port operation ships, electric ships, ferries, engineering ships and ocean operation engineering ships with frequent maneuvering conditions. The diameter of a common base of the full-rotation rudder propeller installed in a large-scale surrounding well flange mode is 4m or more, and high machining and installation precision requirements are provided for the machining of the installation matching surface of a surrounding well flange corresponding to the full-rotation rudder propeller and the installation of the full-rotation rudder propeller.
Chinese patent publication No. CN12923252A discloses a method for mounting a rudder propeller device, which includes the following steps:
1) manufacturing a surrounding well flange, wherein the surrounding well flange comprises a base flange and a surrounding well cylinder, the thickness of the base flange is reserved with machining allowance of 15-20 mm during process design, an inner hole of the base flange is machined to be the size of a finished product, and the height of the surrounding well cylinder extends out of the lowest point of a bottom board of a ship at the position of the surrounding well cylinder by 90-120 mm and is used for supporting and clamping when a large vertical lathe is machined;
2) welding the middle bearing base near the rudder propeller base, and for the electrically propelled full-rotary rudder propeller, welding the base of a propulsion motor of the electric propulsion rudder propeller, building a ship body to a state capable of giving a final base line on the basis, and positioning a branch base line of an axis position, a shafting pull line and a plumb line of a surrounding well flange installation central position on the ship body;
3) hoisting the surrounding well flange onto a ship, positioning the surrounding well flange by taking the drawn branch base line, the shafting bracing wire and a plumb line of the center position of the surrounding well flange as a reference, and performing full-weld connection with the T-shaped toggle plate and the bottom plate of the ship;
4) a vertical process support and a transverse process support are arranged in the rudder propeller cabin ship body;
5) marking a cross line on the upper surface of the base flange by taking a shafting pull line and a plumb line at the center of the base flange as references, wherein the cross line extends to a T-shaped toggle plate outside the peripheral well flange and is marked; marking a machining circle, a checking circle and a sealing groove circle for mounting a sealing ring on the base flange by taking the center of the cross line as the center of a circle, and carrying out positioning marking at the intersection of the machining circle, the checking circle and the cross line, wherein the mounting matching surface is a part of the surface of the base flange matched with the common base of the rudder propeller device;
6) at the plumb line position, measuring an H value upwards from a branch base line according to a shafting layout diagram, wherein the H value is the height from an installation matching surface determined by shafting design to the branch base line, and determining the machining allowance of the surface of the base flange according to the H value, wherein the machining allowance also comprises the machining allowance of the installation matching surface;
7) grinding four horizontal planes for calibration at the cross line of the upper surface of the base flange, wherein the horizontal planes for calibration are vertical to the plumb line;
8) cutting the surrounding well flange base together with the T-shaped toggle plate and the bottom plate of the ship from the ship body to obtain a conical table unit body, wherein the rigidity and the strength of the conical table unit body are enough to ensure that the conical table unit body cannot be mechanically deformed in the processing, transportation and installation processes; wherein the cutting circle at the flange of the base takes a plumb line as a center, and the diameter of the cutting circle is D + 6-7 mm; d is the outer diameter of the base flange; the cutting circle of the bottom plate of the ship is centered on a plumb line, the diameter of the cutting circle is D + 13-14 mm, and before cutting, a section mark is marked on a corresponding section at the position of the cut T-shaped toggle plate;
9) performing finish machining on the conical table unit body on a large-scale vertical lathe in a workshop to enable all screw holes on an installation matching surface, a sealing groove and a base flange to meet design requirements;
10) welding and resetting the machined conical table unit bodies on the ship main body according to the marks in the step 8), and installing the full-rotation rudder propeller into the surrounding well flange after resetting is finished; or installing the full-rotation rudder propeller into the machined conical table unit body, namely assembling the units, hoisting the assembled whole unit onto a ship, welding and resetting the ship body according to the mark of the step 8), wherein the position deviation and the levelness of the conical table unit body meet the shafting arrangement requirement and the rudder propeller installation requirement.
In the patent scheme, the scarf flange is required to be conveyed to a ship body for positioning and full-welding, so that a first expensive transportation fee is generated, then the unit body formed by combining the scarf flange and a part of a bottom plate of the ship body is integrally cut, the scarf flange and the part of the bottom plate of the ship body are conveyed to a workshop large-scale vertical lathe for processing, the scarf flange is returned to the ship body for installation after being processed, a second expensive transportation fee is generated, and when the diameter of the flange reaches 4m or more, the cost of the two transportation fees is very huge; when the processed scarf flange and part of the unit body combined with the bottom plate of the ship body return to the ship body for full welding, the position accuracy of the unit body and the ship body is changed inevitably, no adjustment measure is provided in the patent scheme, and if the position accuracy falls out of an error range, the installation cost is further increased, so that the scarf flange has the defects of high shipbuilding cost, difficulty in ensuring the installation accuracy and multiple processes.
Disclosure of Invention
The invention aims to solve the technical problem of overcoming the defects of the prior art and provides a high-precision installation method of a full-slewing device, which is labor-saving and can effectively reduce the shipbuilding cost.
The technical scheme adopted by the invention is as follows: a high-precision installation method for a full slewing device comprises the following steps:
(1) the thickness of the base flange is reserved with a machining allowance of 8-12 mm, an inner hole of the base flange is machined to the size of the steering oar device, the height of the cylinder body extends out of the machining allowance of the bottom plate of the ship by 50mm, the cylinder body and the base flange are in full-weld connection, and the steering oar base is obtained;
(2) and primarily pulling a wire on the ship, determining a distance median value, a height value and a rib position value of the center of the rudder propeller base on the ship, and determining the inclination of a flange plane of the base, thereby completing the positioning of the rudder propeller base on the ship.
(3) After the rudder propeller base is positioned, the rudder propeller base is vertically and transversely fixed on a ship body, a cutting gun is used for cutting a part of the cylinder body extending out of the bottom plate of the ship body while the rudder propeller base is fixed, and then the cylinder body is welded with the bottom plate of the ship body and a ship body member according to the welding process requirement;
(4) while welding, checking the position change condition of the cylinder;
(5) after the welding of the cylinder is finished, carrying out fine bracing on the base flange, and determining the plane milling processing amount;
(6) hoisting a plane milling machine, and milling the mounting fitting surface of the base flange on site according to design requirements;
(7) milling is completed and the inspection is qualified;
(8) and (4) hoisting the rudder propeller device, and installing and fixing the rudder propeller device by using bolts after drilling and reaming are carried out on site.
Furthermore, the fine drawing line in the step (5) comprises drawing a cross line on the upper surface of the base flange by taking a shafting drawing line and a plumb line at the center of the base flange as a reference, wherein the cross line extends to the bin wall outside the rudder propeller base and is marked; the diameter of the processing plane is too large, and a processing circle and an inspection circle are difficult to draw on site; the method is characterized in that 2 layers of imprints are uniformly distributed on the periphery of the inner wall of a base cylinder by taking a cross line center as a circle center, 8 imprints are printed on each layer, one layer is a processing circle, the other layer is an inspection circle, when the portable plane milling machine is hoisted, the cutting machine is positioned according to the center of a flange of a steering oar base, the machining circle and the inspection circle are marked, and the installation fitting surface is a part matched with the common base of the steering oar device on the surface of the base flange.
The invention has the following beneficial effects:
the provided high-precision installation method of the full-slewing device is characterized in that a rudimental stay wire is used for positioning a steering oar base, the rudimental stay wire is matched with a T-shaped toggle plate for temporary fixation, a joint of a cylinder body and a bottom plate of a ship is welded while the fixation is carried out, the welding and the adjustment and fixation are carried out simultaneously, a base flange is subjected to fine stay wire, the plane milling processing amount is determined, and a portable movable plane milling machine is used for carrying out on-site cutting on the base flange according to the design requirement so as to meet the requirements of the steering oar installation quality and the sealing reliability; the existing construction method is abandoned, the method has the characteristics of saving labor, improving work efficiency and saving expensive transportation investment, installation procedures are reduced, shipbuilding cost is reduced, and shipbuilding period is shortened.
Drawings
FIG. 1 is a schematic view of the present invention prior to installation;
FIG. 2 is a schematic structural diagram of a rudder paddle base;
fig. 3 is a schematic view of the assembled structure of the present invention.
Detailed Description
As shown in fig. 1 to 3, in the present embodiment, the high-precision installation method for a full slewing device includes the following steps:
(1) the thickness of the base flange 1 is reserved with a machining allowance of 8-12 mm, an inner hole of the base flange 1 is machined to the size of the rudder propeller device 2, the height of the cylinder 3 extends out of the machining allowance of the bottom plate 4 by 50mm, the cylinder 3 and the base flange 1 are in full-face welding connection, and a rudder propeller base 5 is obtained;
(2) primarily pulling a wire on a ship body, determining a distance median value, a height value and a rib position value of the center of the rudder propeller base 5 on the ship, and determining the inclination of the plane of the base flange 1, thereby completing the positioning of the rudder propeller base 5 on the ship.
(3) After the rudder propeller base 5 is positioned, the rudder propeller base 5 is vertically and transversely fixed on a ship body, a cutting gun is used for cutting a part of the cylinder 3 extending out of the bottom board 4 while the rudder propeller base 5 is fixed, and then the cylinder 3 and the bottom board 4 are welded according to the welding process requirement;
(4) while welding, the position change situation of the cylinder 3 is checked;
(5) after the cylinder 3 is welded, performing fine bracing on the base flange 1, and determining the plane milling amount;
(6) the hoisting plane milling machine is used for milling the mounting fitting surface of the base flange 1 on site according to the design requirement, and the processing requirement of the mounting fitting surface is that the planeness is less than or equal to 0.10 and the roughness is less than or equal to 3.2;
(7) milling is completed and the inspection is qualified;
(8) and (3) hoisting the rudder propeller device 2, assembling and drilling on site, and then assembling and reaming, and installing and fixing by using bolts, wherein screw holes can also be assembled and drilled with a common base of the rudder propeller device 2 according to the size of the screw holes.
The fine drawing line in the step (5) comprises drawing a cross line on the upper surface of the base flange 1 by taking a shafting drawing line and a plumb line at the center of the base flange 1 as a reference, wherein the cross line extends to the bin wall outside the rudder propeller base 5 and is marked; the diameter of the processing plane is too large, and a processing circle and an inspection circle are difficult to draw on site; 2 layers of imprints are uniformly printed on the periphery of the inner wall of the base cylinder 3 by taking the center of the cross line as the center of a circle, and each layer has 8 imprints; one layer is a processing circle and the other layer is an inspection circle. When the portable plane milling machine is hoisted, the cutting machine is positioned according to the center of the flange of the steering oar base, and is processed according to the marks of the processing circle and the inspection circle. The mounting matching surface is a part of the surface of the base flange 1 matched with the common base of the rudder propeller device 2.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (2)
1. A high-precision installation method for a full slewing device is characterized by comprising the following steps:
(1) the thickness of the base flange is reserved with a machining allowance of 8-12 mm, an inner hole of the base flange is machined to the size of the steering oar device, the height of the cylinder body extends out of the machining allowance of the bottom plate of the ship by 50mm, the cylinder body and the base flange are in full-weld connection, and the steering oar base is obtained;
(2) performing initial bracing on the ship, determining a distance median value, a height value and a rib position value of the center of the rudder propeller base on the ship, and determining the inclination of a base flange plane, thereby completing the positioning of the rudder propeller base on the ship;
(3) after the steering oar base is positioned, the steering oar base is vertically and transversely fixed on a ship, the part of the cylinder body, which extends out of the bottom plate of the ship, is cut by using a cutting gun while the steering oar base is fixed, and then the cylinder body is welded with the bottom plate of the ship and a ship body component according to the welding process requirement;
(4) while welding, checking the position change condition of the cylinder;
(5) after the welding of the cylinder is finished, carrying out fine bracing on the base flange, and determining the plane milling processing amount;
(6) hoisting a plane milling machine, and milling the mounting fitting surface of the base flange on site according to design requirements;
(7) milling is completed and the inspection is qualified;
(8) and (4) hoisting the rudder propeller device, and installing and fixing the rudder propeller device by using bolts after drilling and reaming are carried out on site.
2. The high-precision installation method for the full slewing device as claimed in claim 1, wherein the high-precision installation method comprises the following steps:
the fine drawing line in the step (5) comprises drawing a cross line on the upper surface of the base flange by taking a shafting drawing line and a plumb line at the center of the base flange as a reference, wherein the cross line extends to the bin wall outside the rudder propeller base and is marked; the diameter of the processing plane is too large, and a processing circle and an inspection circle are difficult to draw on site; the method is characterized in that 2 layers of imprints are uniformly distributed on the periphery of the inner wall of a base cylinder by taking a cross line center as a circle center, 8 imprints are printed on each layer, one layer is a processing circle, the other layer is an inspection circle, when the portable plane milling machine is hoisted, the cutting machine is positioned according to the center of a flange of a steering oar base, the machining circle and the inspection circle are marked, and the installation fitting surface is a part matched with the common base of the steering oar device on the surface of the base flange.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111610588.9A CN114084311A (en) | 2021-12-27 | 2021-12-27 | High-precision installation method for full-slewing device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111610588.9A CN114084311A (en) | 2021-12-27 | 2021-12-27 | High-precision installation method for full-slewing device |
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| CN202111610588.9A Pending CN114084311A (en) | 2021-12-27 | 2021-12-27 | High-precision installation method for full-slewing device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115092347A (en) * | 2022-06-13 | 2022-09-23 | 中船黄埔文冲船舶有限公司 | Precision control method for pod propeller base |
| CN115383412A (en) * | 2022-09-28 | 2022-11-25 | 上海振华重工(集团)股份有限公司 | Machining method for flange of connecting plate of quayside container crane anti-seismic device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115092347A (en) * | 2022-06-13 | 2022-09-23 | 中船黄埔文冲船舶有限公司 | Precision control method for pod propeller base |
| CN115092347B (en) * | 2022-06-13 | 2023-07-25 | 中船黄埔文冲船舶有限公司 | Precision control method for nacelle propeller base |
| CN115383412A (en) * | 2022-09-28 | 2022-11-25 | 上海振华重工(集团)股份有限公司 | Machining method for flange of connecting plate of quayside container crane anti-seismic device |
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