CN101987390A - Cutting method of spud leg main side pipe racks - Google Patents
Cutting method of spud leg main side pipe racks Download PDFInfo
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- CN101987390A CN101987390A CN2009101615939A CN200910161593A CN101987390A CN 101987390 A CN101987390 A CN 101987390A CN 2009101615939 A CN2009101615939 A CN 2009101615939A CN 200910161593 A CN200910161593 A CN 200910161593A CN 101987390 A CN101987390 A CN 101987390A
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- tooth bar
- spud leg
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Abstract
The invention discloses a cutting method of spud leg main side pipe racks, which comprises the following steps of: a. placing workpieces to be processed on a cutting tire frame; b. heating positions of cutting racks of the workpieces to be processed to 100 to 300 DEG C; and c. carrying out rack cutting on the workpieces to be processed through a flame cutting machine. The invention adopts the method of firstly heating and then cutting by the flame cutting machine, the cutting on steel plates with the thickness of 170 can be achieved, the smoothness quality requirements can be reached, the cutting precision is high, the error is controlled within 1mm, the cutting thickness is higher than 170mm, and in addition, the cutting surface smoothness reaches the fourth grade.
Description
Technical field
The present invention relates to a kind of cutting method of pile legs of self-elevating drilling platform main shipboard tube tooth bar.
Background technology
Large-scale jack-up unit is used for the exploration and the exploitation of offshore oil/natural gas resource, and main platform body supports by spud leg.Spud leg is the English truss formula, is provided with the main shipboard tube of band tooth bar at the triangle place of pile leg structure, connects by stay pipe therebetween.Main shipboard tube comprises two relative semicircle pipes and has the intermediate plate of tooth bar that the intermediate plate that has tooth bar forms by cutting processing.
Existing cutting method mainly contains: the cutting of a water; B double housing planer cutting, precision height but the slow cost height of speed (cutting is that example need be with 10 days with the tooth bar of 7 meters of thick 152 millimeters long, about 100,000 yuan); The cutting of c, plasma the thicklyest can be cut 80 millimeters thick sheet materials; D, common flame cutting machine, cuts sheet material thickness is little, low precision, general error be greater than 10 millimeters, and the cutting surface quality is poor.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of cutting method of spud leg main shipboard tube tooth bar, and this method can improve cutting accuracy and cutting surface quality greatly.
In order to address the above problem, the cutting method that the invention provides a kind of spud leg main shipboard tube tooth bar comprises the steps:
Step a, with to be processed be placed on the cutting moulding bed on;
Step b, with to be processed the cutting tooth bar the position be heated to 100～300 ℃;
Step c, carry out tooth bar cutting to machined part by flame cutting machine.
Preferably, the tooth bar cutting is carried out on the limit, and limit suitable at interval spacing in the slit of cutting is inserted pin.
Preferably, in described step c, along described to be processed length direction the tooth bar cutting is carried out on described to be processed both sides simultaneously, to eliminate the distortion of cutting process by described flame cutting machine.
The method that the present invention adopts heating earlier to cut with flame cutting machine again can realize the cutting to 170 steel plates, and reach the fineness quality requirement, cutting accuracy height not only, error is controlled within 1 millimeter, and cutting thickness reaches more than 170 millimeters, and the cutting surface smoothness reaches
Level.
Description of drawings
The structure schematic top plan view of the cutting moulding bed device that adopts when Fig. 1 cuts for the present invention;
Schematic diagram is looked on the structure right side of the cutting moulding bed device that adopts when Fig. 2 cuts for the present invention;
The schematic top plan view of Fig. 3 for to be processed is placed on the cutting moulding bed device.
The specific embodiment
As shown in Figure 3, the cutting method of a kind of spud leg main shipboard tube of the present invention tooth bar comprises the steps:
Step a, place 7 on cutting moulding bed 51 with to be processed;
Step b, with to be processed 7 the cutting tooth bar the position be heated to 100～300 ℃ by heater 53;
Step c, 7 carry out tooth bar cutting to machined part by flame cutting machine 4.
In addition, when cutting, can carry out the tooth bar cutting in the limit, limit suitable at interval spacing in the slit of cutting is inserted pin 56.
In addition, in step c, can carry out the tooth bar cutting simultaneously in 7 both sides to machined part along to be processed 7 length direction, can offset the stress deformation that the both sides process produces like this, thereby play the effect of cutting better by flame cutting machine 4.
Because tooth bar steel material alloy content height, methods such as water cutting, double housing planer cutting, plasma cutting all can't realize the cutting to this material, cut also with common flame cutting machine simultaneously to reach the fineness quality requirement.The method that the present invention adopts heating earlier to cut with flame cutting machine 4 again can realize the cutting to 170 steel plates, and reach the fineness quality requirement.By cutting technique of the present invention, cutting accuracy height not only, error is controlled within 1 millimeter, and cutting thickness reaches more than 170 millimeters, and the cutting surface smoothness reaches
Level.
Special use cutting moulding bed device 5 and the cutting machine 4 that the present invention is adopted is described in more detail below.
Shown in Fig. 1～3, cutting moulding bed device 5 comprises: moulding bed 51, moulding bed 51 is provided with the cell body of placing to be processed 7 52, be provided with the lifter 55 that is used for to be processed 7 of lifting at the two ends of cell body 52 length directions, also be provided with a plurality of levelling devices 54 that are used for 7 heaters that heat 53 to machined part and adjust the position of to be processed 7 relative moulding bed 51 along cell body 52 length directions in the bottom of cell body 52.
Like this, when needs carry out cutting processing, to be processed 7 is placed on the moulding bed 51, and regulates to be processed 7 height, it is seated in the cell body 52 by lifter 55.Making to be processed 7 by levelling device 54 again contacts fully with moulding bed 51.After leveling finishes, 7 carry out preheating to machined part by heater 53, and then cut to machined part by cutting machine 4.For the tooth bar skew that in cutting process, prevents to be cut out, in cutting process, use pin 56, the limit cutting edge inserts pin 56 in joint-cutting, thereby has prevented that skew produces distortion in the tooth bar cutting process.
In sum; being preferred embodiment of the present invention only below, is not to be used to limit protection scope of the present invention, therefore; all any modifications of being done within the spirit and principles in the present invention, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (3)
1. the cutting method of a spud leg main shipboard tube tooth bar is characterized in that, comprises the steps:
Step a, with to be processed be placed on the cutting moulding bed on;
Step b, with to be processed the cutting tooth bar the position be heated to 100～300 ℃;
Step c, by flame cutting machine along carrying out the tooth bar cutting to machined part.
2. the method for claim 1 is characterized in that, the tooth bar cutting is carried out on the limit, and limit suitable at interval spacing in the slit of cutting is inserted pin.
3. the method for claim 1 is characterized in that, in described step c, along described to be processed length direction the tooth bar cutting is carried out on described to be processed both sides simultaneously by described flame cutting machine, to eliminate the distortion of cutting process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101615939A CN101987390A (en) | 2009-08-06 | 2009-08-06 | Cutting method of spud leg main side pipe racks |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101615939A CN101987390A (en) | 2009-08-06 | 2009-08-06 | Cutting method of spud leg main side pipe racks |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101987390A true CN101987390A (en) | 2011-03-23 |
Family
ID=43744286
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009101615939A Pending CN101987390A (en) | 2009-08-06 | 2009-08-06 | Cutting method of spud leg main side pipe racks |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101987390A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102489823A (en) * | 2011-11-28 | 2012-06-13 | 武汉船用机械有限责任公司 | Flame cutting method of ultra-long single-sided rack |
| CN102764925A (en) * | 2012-07-04 | 2012-11-07 | 上海振华重工集团(南通)传动机械有限公司 | Rack cutting technology used for ocean platform |
| CN103286413A (en) * | 2013-06-19 | 2013-09-11 | 白鹏展 | Oxy-acetylene flame cutting torch path guiding tool |
| CN104107971A (en) * | 2014-06-17 | 2014-10-22 | 首钢总公司 | Flame cutting method for high-carbon-equivalent thick steel plate steel plate |
| CN105127547A (en) * | 2015-09-23 | 2015-12-09 | 天津惠蓬海洋工程有限公司 | Self-elevating drilling platform single-side rack plate cutting technology |
| CN105149725A (en) * | 2015-09-23 | 2015-12-16 | 天津惠蓬海洋工程有限公司 | Common cutting technology for spud leg main cord rack plates of self-elevating drilling platform |
-
2009
- 2009-08-06 CN CN2009101615939A patent/CN101987390A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102489823A (en) * | 2011-11-28 | 2012-06-13 | 武汉船用机械有限责任公司 | Flame cutting method of ultra-long single-sided rack |
| CN102489823B (en) * | 2011-11-28 | 2014-05-21 | 武汉船用机械有限责任公司 | Flame cutting method of ultra-long single-sided rack |
| CN102764925A (en) * | 2012-07-04 | 2012-11-07 | 上海振华重工集团(南通)传动机械有限公司 | Rack cutting technology used for ocean platform |
| CN103286413A (en) * | 2013-06-19 | 2013-09-11 | 白鹏展 | Oxy-acetylene flame cutting torch path guiding tool |
| CN104107971A (en) * | 2014-06-17 | 2014-10-22 | 首钢总公司 | Flame cutting method for high-carbon-equivalent thick steel plate steel plate |
| CN105127547A (en) * | 2015-09-23 | 2015-12-09 | 天津惠蓬海洋工程有限公司 | Self-elevating drilling platform single-side rack plate cutting technology |
| CN105149725A (en) * | 2015-09-23 | 2015-12-16 | 天津惠蓬海洋工程有限公司 | Common cutting technology for spud leg main cord rack plates of self-elevating drilling platform |
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Application publication date: 20110323 |