CN110525584B - Method for forming double-sided curve linear panel in full-rotation tugboat side - Google Patents
Method for forming double-sided curve linear panel in full-rotation tugboat side Download PDFInfo
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- CN110525584B CN110525584B CN201910846484.4A CN201910846484A CN110525584B CN 110525584 B CN110525584 B CN 110525584B CN 201910846484 A CN201910846484 A CN 201910846484A CN 110525584 B CN110525584 B CN 110525584B
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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
- B63B35/00—Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
- B63B35/66—Tugs
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Abstract
The invention discloses a method for forming a double-sided curve linear panel in a full-rotation tug side, which comprises the following steps: 1) lofting and blanking of all plates, 2) reversely building a hull segmented frame on a jig frame, 3) respectively carrying out spot welding positioning on a broadside longitudinal truss panel and a broadside longitudinal truss web, a strong rib panel and a strong rib web, 4) fixing the broadside longitudinal truss panel by using a special tool, and 5) carrying out fire straightening on the broadside longitudinal truss panel. The invention adopts the method that the broadside longitudinal girder panel is pressed against the longitudinal curve of the broadside longitudinal girder web plate through the fire correction, so that the curves of the broadside longitudinal girder panel and the broadside longitudinal girder web plate are inosculated, and the difficult problem of inosculating of two members, namely the broadside longitudinal girder panel with the longitudinal curve and the strong rib panel with the transverse curve, is solved. The invention has simple process, high construction efficiency, low cost and good molding quality, and meets the node definition requirements of the Chinese classification society 'steel seagoing vessel entry standard' on the calculation of the strength of the broadside stringer and the strong rib.
Description
Technical Field
The invention relates to a method for manufacturing a full-rotation tugboat body section, in particular to a fire-work shape-correcting method for cross-loop matching of a broadside longitudinal truss panel with a double-sided curve line type in a broadside and a strong rib panel, and belongs to the technical field of ship manufacturing processes.
Background
The full-rotation tugboat provides service for large ships to enter and exit ports, integrates functions of high power, fire fighting, towing, pushing and the like, has the advantages of capability of realizing in-situ 360-degree rotation, high propelling power, high traction force, flexibility in operation, good stability and the like, and is one of necessary machines for port development. The ship is small in size and complex in molded line, and a double-sided curve line is formed at the joint of the outer plate of the cabin section of the ship body and the outer plate of the bow part, namely, curves exist in the vertical direction and the horizontal direction of the ship body, so that the side stringer panel and the strong rib panel which are vertically crossed in the outer plate are also curved. If a conventional hydraulic press is adopted to bend and form the broadside longitudinal girder panel and the strong rib panel, and then the bent broadside longitudinal girder panel and the strong rib panel are respectively welded on the corresponding web plates, the curvatures of the bent broadside longitudinal girder panel and the bent strong rib panel cannot be matched with the curvatures of the broadside longitudinal girder web plate and the strong rib web plate corresponding to the lower side, so that the vertical circle-crossing matching of the broadside longitudinal girder panel and the strong rib panel cannot be realized.
Disclosure of Invention
The invention aims to provide a method for forming a double-sided curve linear panel in a full-rotation tugboat broadside, which has the advantages of simple process, low construction cost and good forming quality.
The invention is realized by the following technical scheme:
a method for forming a double-sided curve line panel in a full-circle turning tug side is characterized in that the double-sided curve line is positioned at the joint of a bow part of a ship body and a cabin section of the ship body and the bow part of the ship body and comprises a longitudinal curve line in the horizontal direction and a transverse curve line in the vertical direction; the molding method comprises the following steps:
1) panel lofting and blanking with double-sided curve line type hull segment
According to the sectional construction process requirement of the linear hull with the double-sided curve, the corresponding number of planks, broadside longitudinal girder webs, broadside longitudinal girder panels, strong rib webs and strong rib panels are laid out and blanked.
2) Inverted hull section frame on moulding bed
According to the rib position spacing requirement of the strong rib web plate of the hull section and the upper and lower position requirements of the broadside longitudinal truss web plate, the broadside longitudinal truss web plate and the strong rib web plate are positioned and welded on the jig frame to form hull section frames which are mutually vertically crossed and have upward bottoms, and then an outer plate is welded on the outer side of the hull section frame in a splicing mode.
3) Spot welding and positioning of broadside longitudinal girder panel, broadside longitudinal girder web, strong rib panel and strong rib web respectively
And respectively carrying out unilateral spot welding positioning between the broadside longitudinal girder panel to be vertically fixed and welded and connected and the straight part of the broadside longitudinal girder web plate, and between the strong rib panel and the straight part of the strong rib web plate.
4) Use fixed topside to indulge purlin panel of special frock
At the starting end of the curve line type of the broadside longitudinal girder panel, one end of the broadside longitudinal girder panel is pressed down and fixed on the broadside longitudinal girder web plate by a fixing tool; and pressing the broadside longitudinal girder panel by using an orthopedic tool at a position 290-310 mm away from the fixed tool in the direction of the curve linear starting end of the broadside longitudinal girder panel so that the lower side surface of the broadside longitudinal girder panel is abutted against the curve linear broadside longitudinal girder web plate.
5) Fire-straightening broadside longitudinal girder panel
Heating the broadside longitudinal girder panel between the shape correcting tool and the fixing tool by using a drying gun, so that the deformation resistance of the broadside longitudinal girder panel is reduced at high temperature; the method comprises the following steps that (1) an orthopedic tool is loaded, and the reaction force of the orthopedic tool presses down a broadside longitudinal girder panel to enable the broadside longitudinal girder panel to generate plastic deformation to abut against a curved line type broadside longitudinal girder web plate so as to complete local deformation of the broadside longitudinal girder panel; after the deformation of the first section of curve line type of the broadside longitudinal girder panel between the fixing tool and the shape correcting tool is finished, the fixing tool and the shape correcting tool are unloaded respectively and then move 290-310 mm towards the non-deformed broadside longitudinal girder panel, and then the step 4) and the step 5) are repeated to finish the deformation of the second section of curve line type of the broadside longitudinal girder panel; and analogizing until the vertical welding positions of the broadside longitudinal girder panel and the strong rib panel are matched, completing the curve line type deformation of the broadside longitudinal girder panel, and realizing the double-sided curve line type circle crossing of the broadside longitudinal girder panel and the strong rib panel.
The object of the invention is further achieved by the following technical measures.
Further, in step 4) the fixed frock includes portal frame and screw rod, the portal frame strides the broadside and indulges the purlin panel, and two lower extremes of portal frame are welded the fixed respectively and are indulged on the planking of purlin web both sides on the broadside, and screw rod lower extreme supports and leans on the broadside and indulges the purlin panel after screwing in the nut at portal frame upper end middle part to indulge the purlin panel with the broadside and fix the initiating terminal at vertical curve line type.
Further, the shape correcting tool in the step 4) comprises a jack and an inverted L-shaped pull plate, the bottom of the jack is supported on the broadside longitudinal truss panel at a position which is 290-310 mm away from the curve linear starting end direction and is far away from the fixed tool, the bottom of the inverted L-shaped pull plate is welded and fixed on an outer plate, and the top of the movable end of the jack abuts against the lower side of the end head of the transverse plate at the top of the inverted L-shaped pull plate; when the movable end of the jack rises to pressurize the transverse plate at the top of the L-shaped pulling plate, the bottom of the jack presses the broadside longitudinal girder panel downwards, so that the lower side of the broadside longitudinal girder panel abuts against the broadside longitudinal girder web plate with the curved upper side; under the action of fire straightening, the broadside stringer panel is plastically deformed to form a curve shape and abuts against the upper side of the curved broadside stringer web plate.
Further, the heating temperature of the fire-straightening broadside longitudinal girder panel in the step 5) is controlled to be 750-800 ℃, and the heating width is equal to the width of the broadside longitudinal girder panel.
The invention takes the upper side curve of the broadside longitudinal girder web as the bending template of the broadside longitudinal girder web, adopts the fixing tool to fix the broadside longitudinal girder web at the initial end of the longitudinal curve line, and the shape righting tool is fixed on the broadside longitudinal girder web in front of the fixing tool, and then the broadside longitudinal girder web is plastically deformed by fire shape righting to abut against the longitudinal curve of the broadside longitudinal girder web, so that the curves of the broadside longitudinal girder web and the broadside longitudinal girder web are inosculated, and the difficult problem of the cross-lap inosculation of two components, namely the broadside longitudinal girder web with the longitudinal curve and the strong rib web with the transverse curve, is solved. The invention has simple process, high construction efficiency, low cost and good molding quality, and meets the node definition requirements of the Chinese classification society 'steel seagoing vessel entry standard' on the calculation of the strength of the broadside stringer and the strong rib.
Advantages and features of the present invention will be illustrated and explained by the following non-restrictive description of preferred embodiments thereof, given by way of example only with reference to the accompanying drawings.
Drawings
FIG. 1 is a side view of the hull of a fully slewing tug boat;
FIG. 2 is an enlarged partial sectional view taken along line B-B of FIG. 1;
FIG. 3 is a three-dimensional view of the vertical intersection anastomosis of a broadside stringer panel and a strong rib panel;
FIG. 4 is a schematic view of a fixture secured to a side stringer panel and an outer panel;
FIG. 5 is a schematic view of an orthopedic tool mounted on a side stringer panel and an outer panel.
Detailed Description
The invention is further illustrated by the following figures and examples.
Fig. 1 shows a side view of a hull of a full-circle-turning tug, wherein a rectangular area A is a joint of an outer plate 20 of a cabin section of the hull and an outer plate 10 of a bow part, and the joint and double-sided curve line types of the bow part of the hull comprise a longitudinal curve line type in a horizontal direction and a transverse curve line type in a vertical direction.
As shown in fig. 1 to 3, the molding method of the present invention includes the steps of:
1) panel lofting and blanking with double-sided curve line type hull segment
According to the sectional construction process requirement of the linear hull with the double-sided curve, the corresponding number of the outer plate 1, the broadside longitudinal girder web plate 2, the broadside longitudinal girder panel 3, the strong rib web plate 4 and the strong rib panel 5 are laid out and blanked.
2) Inverted hull section frame on moulding bed
According to the rib position spacing requirement (such as #42 rib position to #64 rib position in figure 2) of the strong rib web 4 of the hull section and the up-and-down position requirement of the broadside longitudinal truss web 2, the broadside longitudinal truss web 2 and the strong rib web 4 are positioned and welded on the moulding bed to form hull section frames which are vertically intersected with each other and have upward bottoms, and then the outer plate 1 is welded outside the hull section frames in a splicing way.
3) Spot welding and positioning of broadside stringer panel 3, broadside stringer web 2, strong rib panel 5 and strong rib web 4 respectively
And (3) performing single-side spot welding positioning between the straight parts of the broadside longitudinal girder panel 3 and the broadside longitudinal girder web 2 to be vertically fixed and welded and between the straight parts of the strong rib panel 5 and the strong rib web 4 respectively.
4) Use special frock to fix topside stringer panel 3
One end of the broadside longitudinal girder panel 3 is fixed on the broadside longitudinal girder web 2 by a fixing tool 6 in a downward pressure spot welding mode at the curve line type starting end of the broadside longitudinal girder panel 3. And pressing the broadside longitudinal girder panel 3 by using the shape correcting tool 7 at a position 300mm away from the fixed tool in the direction of the curve linear starting end of the broadside longitudinal girder panel 3 so that the lower side surface of the broadside longitudinal girder panel abuts against the curve linear broadside longitudinal girder web plate 2.
5) Firer's orthopedic broadside stringer panel 3
The broadside longitudinal girder panel 3 between the shape correcting tool 7 and the fixing tool 6 is heated by the drying gun, the heating temperature is controlled to be 750-800 ℃, the heating width is equal to the width of the broadside longitudinal girder panel 3, the heating uniformity of the drying gun is improved, and the broadside longitudinal girder panel 3 is convenient to reduce the deformation resistance and deform uniformly at high temperature. And (3) loading the shape correcting tool 7, and pressing the broadside longitudinal girder panel 3 downwards by the counterforce of the shape correcting tool to enable the broadside longitudinal girder panel 3 to generate plastic deformation to abut against the broadside longitudinal girder web 2 in a curve line type, so that the local deformation of the broadside longitudinal girder panel 3 is completed. After the first section of curve linear deformation of the broadside longitudinal girder panel 3 between the fixing tool 6 and the shape righting tool 7 is completed, the fixing tool 6 and the shape righting tool 7 are respectively unloaded and then move 300mm towards the non-deformed broadside longitudinal girder panel 3, and then the step 4) and the step 5) are repeated to complete the second section of curve linear deformation of the broadside longitudinal girder panel 3; by analogy, until the vertical welding positions of the broadside longitudinal girder panel 3 and the strong rib panel 5 are matched, the curve line type deformation of the broadside longitudinal girder panel 3 is completed, and the double-sided curve line type circle crossing of the two components of the broadside longitudinal girder panel 3 and the strong rib panel 5 is realized.
As shown in fig. 4, the fixing tool 6 includes a portal frame 61 and a screw 62, the portal frame 61 spans the side stringer panel 3, and both lower ends thereof are welded and fixed to the outer panels 1 on both sides of the side stringer web 2. The handle 611 at the upper end of the screw rod 62 is pulled, so that the lower end of the screw rod 62 screwed into the middle nut 612 at the upper end of the portal frame 61 is pressed against the broadside stringer panel 3, and the broadside stringer panel 3 is positioned and fixed at the starting end of the longitudinal curve line type, so that the broadside stringer panel 3 is conveniently attached to the upper side of the broadside stringer web 2 through flame straightening and bending by taking the upper side curve of the broadside stringer web 2 as a bending template.
As shown in fig. 5, the orthopedic tool 7 includes a jack 71 and an inverted L-shaped pull plate 72, and in the direction departing from the starting end of the curve line, the bottom of the jack 71 is supported on the broadside stringer panel 3 at a distance of 300mm from the fixed tool, the bottom of the inverted L-shaped pull plate 72 is welded and fixed on the outer panel 1, and the top of the movable end 711 of the jack abuts against the lower side of the end of the top transverse plate 721 of the inverted L-shaped pull plate. When the movable end 711 of the jack ascends to pressurize the top transverse plate 721 of the L-shaped pulling plate, the bottom of the jack 71 pushes down the broadside stringer panel 3, and the lower side of the broadside stringer panel abuts against the broadside stringer web 2 with a curved upper side; under the action of fire straightening, the broadside stringer panel 3 is plastically deformed into a curved shape and abuts against the upper side of the curved broadside stringer web 2. The length range of the firer shape-righting broadside longitudinal girder panel 3 is the distance between 2-3 rib blocking positions in the ship body section.
In addition to the above embodiments, the present invention may have other embodiments, and any technical solutions formed by equivalent substitutions or equivalent transformations fall within the scope of the claims of the present invention.
Claims (4)
1. A method for forming a double-sided curve line panel in a full-circle turning tug side is characterized in that the double-sided curve line is positioned at the joint of a bow part of a ship body and a cabin section of the ship body and the bow part of the ship body and comprises a longitudinal curve line in the horizontal direction and a transverse curve line in the vertical direction; the molding method comprises the following steps:
1) panel lofting and blanking with double-sided curve line type hull segment
According to the sectional construction process requirement of the linear hull with the double-sided curve, lofting and blanking a corresponding number of planking, broadside longitudinal girder webs, broadside longitudinal girder panels, strong rib webs and strong rib panels;
2) inverted hull section frame on moulding bed
According to the interval requirement of rib positions of a strong rib web of a hull section and the upper and lower position requirements of a broadside longitudinal truss web, the broadside longitudinal truss web and the strong rib web are positioned and welded on a jig frame to form hull section frames which are mutually vertically crossed and have upward bottoms, and then an outer plate is welded on the outer side of the hull section frames in a splicing manner;
3) spot welding and positioning of broadside longitudinal girder panel, broadside longitudinal girder web, strong rib panel and strong rib web respectively
Performing single-side spot welding positioning between the broadside longitudinal girder panel and the straight part of the broadside longitudinal girder web plate to be vertically and fixedly welded and connected and between the strong rib panel and the straight part of the strong rib web plate respectively;
the method is characterized in that: further comprising the steps of:
4) use fixed topside to indulge purlin panel of special frock
At the starting end of the curve line type of the broadside longitudinal girder panel, one end of the broadside longitudinal girder panel is pressed down and fixed on the broadside longitudinal girder web plate by a fixing tool; pressing the broadside longitudinal girder panel by using an orthopedic tool at a position 290-310 mm away from the fixed tool in the direction of the curve linear starting end of the broadside longitudinal girder panel so that the lower side surface of the broadside longitudinal girder panel is abutted against the curve linear broadside longitudinal girder web plate;
5) fire-straightening broadside longitudinal girder panel
Heating the broadside longitudinal girder panel between the shape correcting tool and the fixing tool by using a drying gun, so that the deformation resistance of the broadside longitudinal girder panel is reduced at high temperature; the method comprises the following steps that (1) an orthopedic tool is loaded, and the reaction force of the orthopedic tool presses down a broadside longitudinal girder panel to enable the broadside longitudinal girder panel to generate plastic deformation to abut against a curved line type broadside longitudinal girder web plate so as to complete local deformation of the broadside longitudinal girder panel; after the first section of curve linear deformation of the broadside longitudinal girder panel between the fixing tool and the shape correcting tool is finished, the fixing tool and the shape correcting tool are unloaded respectively and move 290-310 mm towards the non-deformed broadside longitudinal girder panel, and then the steps 4) and 5) are repeated to finish the second section of curve linear deformation of the broadside longitudinal girder panel; and analogizing until the vertical welding positions of the broadside longitudinal girder panel and the strong rib panel are matched, completing the curve line type deformation of the broadside longitudinal girder panel, and realizing the double-sided curve line type circle crossing of the broadside longitudinal girder panel and the strong rib panel.
2. The method for forming a double-sided curved linear panel in the side of a full-circle swinging tug boat as set forth in claim 1, wherein: and 4), fixing the tool in the step 4) by using a portal frame and a screw rod, wherein the portal frame stretches across the broadside longitudinal girder panel, two lower ends of the portal frame are respectively welded and fixed on outer plates on two sides of the broadside longitudinal girder web plate, and the lower end of the screw rod is screwed into a nut in the middle of the upper end of the portal frame and then abuts against the broadside longitudinal girder panel, so that the broadside longitudinal girder panel is positioned and fixed at the starting end of the longitudinal curve line type.
3. The method for forming a double-sided curved linear panel in the side of a full-circle swinging tug boat as set forth in claim 1, wherein: the shape correcting tool in the step 4) comprises a jack and an inverted L-shaped pull plate, the distance from the fixed tool to the starting end of the curve line is 290-310 mm, the bottom of the jack is supported on the broadside longitudinal girder panel, the bottom of the inverted L-shaped pull plate is welded and fixed on an outer plate, and the top of the movable end of the jack abuts against the lower side of the end head of the transverse plate at the top of the inverted L-shaped pull plate; when the movable end of the jack rises to pressurize the transverse plate at the top of the L-shaped pulling plate, the bottom of the jack presses the broadside longitudinal girder panel downwards, so that the lower side of the broadside longitudinal girder panel abuts against the broadside longitudinal girder web plate with the curved upper side; under the action of fire straightening, the broadside stringer panel is plastically deformed to form a curve shape and abuts against the upper side of the curved broadside stringer web plate.
4. The method for forming a double-sided curved linear panel in the side of a full-circle swinging tug boat as set forth in claim 1, wherein: and 5) controlling the heating temperature of the fire-straightening broadside longitudinal girder panel to be 750-800 ℃, wherein the heating width is equal to the width of the broadside longitudinal girder panel.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910846484.4A CN110525584B (en) | 2019-09-09 | 2019-09-09 | Method for forming double-sided curve linear panel in full-rotation tugboat side |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910846484.4A CN110525584B (en) | 2019-09-09 | 2019-09-09 | Method for forming double-sided curve linear panel in full-rotation tugboat side |
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| CN110525584A CN110525584A (en) | 2019-12-03 |
| CN110525584B true CN110525584B (en) | 2021-05-25 |
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| CN102886400A (en) * | 2012-10-25 | 2013-01-23 | 盈都桥梁钢构工程有限公司 | Hot work bending technology for spatial hyperbolic circular tube |
| CN105539724A (en) * | 2015-12-23 | 2016-05-04 | 江苏现代造船技术有限公司 | Hull curved block manufacturing method |
| CN109986308A (en) * | 2019-04-26 | 2019-07-09 | 江苏京沪重工有限公司 | A kind of steel box-girder plate unit U rib and T rib fabrication technique |
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2019
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|---|---|---|---|---|
| EP1308223A2 (en) * | 2001-11-05 | 2003-05-07 | SCHÜCO International KG | Simulating method of a 3-roll-bending process |
| JP4095952B2 (en) * | 2003-11-18 | 2008-06-04 | 三菱重工業株式会社 | Hull structure and hull construction method |
| CN102886400A (en) * | 2012-10-25 | 2013-01-23 | 盈都桥梁钢构工程有限公司 | Hot work bending technology for spatial hyperbolic circular tube |
| CN105539724A (en) * | 2015-12-23 | 2016-05-04 | 江苏现代造船技术有限公司 | Hull curved block manufacturing method |
| CN109986308A (en) * | 2019-04-26 | 2019-07-09 | 江苏京沪重工有限公司 | A kind of steel box-girder plate unit U rib and T rib fabrication technique |
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