CN101612683A - Underwater horizontal type diamond-wire saw - Google Patents
Underwater horizontal type diamond-wire saw Download PDFInfo
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- CN101612683A CN101612683A CN200910072533A CN200910072533A CN101612683A CN 101612683 A CN101612683 A CN 101612683A CN 200910072533 A CN200910072533 A CN 200910072533A CN 200910072533 A CN200910072533 A CN 200910072533A CN 101612683 A CN101612683 A CN 101612683A
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Abstract
The present invention is to provide a kind of underwater horizontal type diamond-wire saw.Comprise be fixedly clamped part (1), cutting part (2), beading rope antiseize device (3), feeding part (4) and part compositions such as underwater hydraulic control clack box and detection system (5), be horizontal state during use and hold tightly on workpiece to be cut (7).This underwater diamond rope saw clamping force is big, easy and simple to handle, and when finishing cutting operation, the machine stress state is better, and work more steadily, reliably.Can adapt to the special requirement of vertical tube operating type and environment under water.This rope saw can be clamped on the large-diameter pipeline, and clamping force can overcome the moment of flexure of gravity and centripetal force generation; Simultaneously, the lead of radial feed and fairlead are separately positioned on cutting frame and the clamping frames, this design can make centripetal force finally act on by clamping device and be cut on the pipeline, improved the whole stress of rope saw, effectively avoided the leading screw distortion, guarantee the normal operation of diamond-wire saw, operation effectiveness obviously improves.
Description
(1) technical field
What the present invention relates to is a kind of equipment of cutting operation under water, relates in particular to a kind of underwater horizontal type diamond-wire saw that is used for the pipeline cutting operation of major diameters such as offshore oil platform jacket and the damaged oil and gas pipes of pile foundation and seabed, the filling of multiple materials.
(2) background technology
Construction through decades, the quantity more and more many (about 6500) of marine site, whole world oil gas platform works such as (Offshore Oil and Gas Platform), progressively exploitation along with oil gas field, when reaching the end of allowable exploitation gradually, its potential problems of deriving are also increasingly sophisticated, for example, the economy of exploitation, potential pollution, to harm of environment etc.Therefore, in time, in time stop to produce, and will discard works and carry out suitable handling problems, be subjected to the whole world already and generally paid attention to.The dismounting of marine structure (ocean platform) is one and builds new construction quite or complicated more, as to relate to many technical fields comprehensive system works; and be subjected to the restriction of multiple factors such as economy, technology, safety, environmental protection, be one and have dangerous engineering.And this project itself also is potential pollution sources to marine environment, in case have an accident, will cause tremendous loss.In order to ensure workmen's safety, prevent that marine environment from being polluted, the protection ecological balance must be carried out strict management to the overall process of removing engineering.
Present domestic offshore oil platform jacket and the pile foundation cutting of also not carrying out, finish for the vertical rope saw of the many employings of pipeline cutting operation that minor diameter, multiple materials such as the damaged oil and gas pipes in seabed are filled, but it is mainly used in the cutting operation of level, small diameter pipeline.Its shortcoming is: clamping force power is little, is unfavorable for the cutting operation of vertical tube; It is little to adapt to diameter range, is not suitable for the cutting of large-diameter pipelines such as jacket pile foundation; Guidance mode also is unfavorable for cutting force is delivered on the frame.
Adopted the diamond rope saw cutting technique abroad aspect last oil platform jacket and pile foundation cutting, it adopts the V-block location, and by the version of hydraulic cylinder application of force clamping, but introducing of other aspect versions is less.
Number of patent application is 200520020037.7, name is called disclosed technical scheme in the utility model patent file of " diamond-wire saw ", also be to be used for the submarine pipeline cutting, but it mainly is applicable to cutting horizontal positioned, minor diameter oil and gas pipes etc., the double guiding of doing of its general frame, when the feeding of beading rope, the support arm stress of driving wheel, regulating wheel and directive wheel is bad, when serious whole frame is deformed.The part that is fixedly clamped of its fixture only plays clamping action, and its clamping action area is little, only is applicable to the cutting of horizontal small diameter pipeline.
Application number is 200520080892.7, name is called disclosed technical scheme in the utility model patent file of " planer-type rope saw cutting machine ", is mainly used in the cutting of stone slab, and it mainly adopts the motor-driven driving wheel, tensioning portion adopts pneumatic mode, therefore can only be suitable for land work.In addition, its pedestal is the pedestal of machine tool, can not adapt to operation in the such particular surroundings in seabed.
(3) summary of the invention
The object of the present invention is to provide a kind of underwater horizontal type diamond-wire saw that can adapt to big caliber, multiple material fill pipe cutting operation under water.
The object of the present invention is achieved like this:
Comprise the part 1 that is fixedly clamped, cutting part 2, feeding part 4 and underwater hydraulic control clack box and detection system part 5; Described each several part is installed on the general frame, and described general frame is by roof supporting 41, supports base plate 42, two fixed guide posts 43 and strengthen the gantry type frame structure that gusset 44 connects and composes; The described part 1 that is fixedly clamped includes V-arrangement positioner 11, hydraulic clamp 12, cutting frame guider 13, rail plate gravity bracing or strutting arrangement 14, its V-arrangement positioner 11 is provided with general frame and supports bolt hole and the dowel hole that base plate links, and by bolt and alignment pin clamping part is associated in general frame; Described cutting part 2 includes drive wheel assemblies 21, tensioning wheel assembly 22, guide wheel assemblies 23, rail plate 24, cutting frame 25, drive wheel assemblies 21 relies on flange and the cutting frame active flank 251 on the driving wheel axle sleeve 211 to link, initiatively hydraulic motor inserts in the drive sprocket axle 212, tensioning wheel assembly 22 relies on the pedestal 221 and the riser of the tension wings 252 of cutting frame to link, two the cover guide wheel assemblies 23 is installed in two flanks respectively, and with driving wheel 213, regulating wheel 223 at grade; Described feeding partly includes feeding hydraulic motor 45, gearbox 46, worm type of reduction gearing 47, feed screw nut feed arrangement 48, feeding hydraulic motor 45 links by gearbox 46 and worm type of reduction gearing 47, feed screw nut feed arrangement 48, for the feed motion of beading rope 6 provides power;
The present invention can also comprise:
1, also comprises beading rope antiseize device 3, beading rope antiseize device 3 is made up of otch pad 31, pad bearing 32 and pad pretension bolt 33, pad bearing 31 is installed in two flanks of cutting frame, otch pad 31 is placed on the pad bearing 32, and guarantee pad and beading rope 6 at grade by bearing, the side of pad bearing 32 is provided with pad pretension bolt 33, and the otch spacer thickness is less than beading rope diameter, and close driving wheel 213 directions one side is made wedge shape.
2, the main body 431 of described fixed guide post is a steel pipe, and the both ends 432 of fixed guide post are two body structures with the main body 431 of fixed guide post, the main body 431 of fixed guide post and 432 welding of the both ends of fixed guide post.
3, the reinforcement gusset 44 on the general frame also links with V-arrangement positioner 11.
4, riser becomes 45 degree with direction of feed, and the tensioning of beading rope is tried one's best with joint efforts along the axial direction of tensioning leading screw 222.
5, described underwater hydraulic control clack box and detection system 5 are installed on the rope saw body, detection system and hydraulic control valve are all installed and are placed in the airtight clack box, cable and data wire etc. by watertight connector draw clack box outer with lash ship on switch board link, the turnover oil pipe of working connection and each executive component links by hydraulic quick coupler and oil sources and executive component.
In order to adapt to the needs of marine engineering development, such as the jacket of oil field platform and cutting of pile foundation or the like are discarded in the damaged oil and gas pipes in seabed, sea, can adapt to big caliber, multiple material fill pipe cutting work under water, the present invention has designed underwater horizontal type diamond-wire saw.This underwater diamond rope saw clamping force is big, easy and simple to handle, and when finishing cutting operation, the machine stress state is better, and work more steadily, reliably.
Reasonable in design of the present invention can adapt to the special requirement of vertical tube operating type and environment under water.This rope saw can be clamped on the large-diameter pipeline, and clamping force can overcome the moment of flexure of gravity and centripetal force generation; Simultaneously, the lead of radial feed and fairlead are separately positioned on cutting frame and the clamping frames, this design can make centripetal force finally act on by clamping device and be cut on the pipeline, improved the whole stress of rope saw, effectively avoided the leading screw distortion, guarantee the normal operation of diamond-wire saw, operation effectiveness obviously improves.
(4) description of drawings
Fig. 1 is the overall structure schematic diagram of underwater horizontal type diamond-wire saw of the present invention.
Fig. 2 is the part-structure schematic diagram that is fixedly clamped of underwater horizontal type diamond-wire saw of the present invention.
Fig. 3 is the cutting part structural representation of underwater horizontal type diamond-wire saw of the present invention.
Fig. 4 is the antiseize device structural representation of underwater horizontal type diamond-wire saw of the present invention.
Fig. 5 is the feeding part-structure schematic diagram of underwater horizontal type diamond-wire saw of the present invention.
Fig. 6 is the hydraulic control clack box and the detection system structural representation of underwater horizontal type diamond-wire saw of the present invention.
(5) specific embodiment
For example the present invention is done description in more detail below in conjunction with accompanying drawing:
In conjunction with Fig. 1.Underwater horizontal type diamond-wire saw of the present invention comprises partly composition such as the part 1 that is fixedly clamped, cutting part 2, beading rope antiseize device 3, feeding part 4 and underwater hydraulic control clack box and detection system 5 etc., is horizontal state during use and holds tightly on workpiece 7 to be cut.Its general frame is by roof supporting 41, supports base plate 42, two fixed guide posts 43 and strengthen the gantry type frame structure that gusset 44 etc. constitutes, and the stressing conditions during according to actual job, reinforcement has been arranged to the structure of truss-like, guaranteed the strength and stiffness requirement of general frame, arrangement works reliability height, vibration resistance and the good impact resistance of this frame-type.For alleviating the weight that connects framework, fixed guide post main body 431 adopts steel pipe, fixed guide post both ends 432 are made the back separately with roof supporting and base plate mounting portion and are welded with steel pipe, the lead chrome-faced, can play antirust effect, the perpendicularity of lead and top board and base plate must be in strict accordance with requiring processing and assembling, to guarantee the precision and the reliability of guiding simultaneously.
Simultaneously in conjunction with Fig. 2.The described part 1 that is fixedly clamped includes V-arrangement positioner 11, hydraulic clamp 12, cutting frame guider 13, rail plate gravity bracing or strutting arrangement 14 etc.Its V-arrangement positioner 11 is provided with general frame and supports bolt hole and the dowel hole that base plate links, and by bolt and alignment pin clamping part is associated in general frame, and guarantees that the installation site of the fixed guide 43 on the cutting frame is accurate.Simultaneously, the truss-like reinforcement 44 on the general frame also links with V-arrangement positioner 11, has strengthened the integral rigidity of rope saw.
Simultaneously in conjunction with Fig. 3.Described cutting part includes drive wheel assemblies 21, tensioning wheel assembly 22, guide wheel assemblies 23, rail plate 24, cutting frame 25.Drive wheel assemblies 21 relies on flange and the cutting frame active flank 251 on the driving wheel axle sleeve 211 to link, and is weight reduction, and the driving wheel axle sleeve adopts aluminium to make; Initiatively hydraulic motor inserts in the drive sprocket axle 212, has reduced the axial length of drive wheel assemblies; Tensioning wheel assembly 22 relies on the pedestal 221 and the riser of the tension wings 252 of cutting frame to link, riser becomes 45 degree with direction of feed, the tensioning that makes beading rope guarantees that with joint efforts as far as possible along the axial direction of tensioning leading screw 222 tensioning wheel assembly 22 has good load state; Two cover guide wheel assemblies 23 are installed in two flanks respectively, and with driving wheel 213, regulating wheel 223 at grade, they support to quadrangle with the beading rope 6 of sealing jointly, and can make beading rope 6 do shuttling movement under the drive of driving wheel 213.
Simultaneously in conjunction with Fig. 4.Beading rope antiseize device 3 is made up of otch pad 31, pad bearing 32 and pad pretension bolt 33.Pad bearing 31 is installed in two flanks of cutting frame, otch pad 31 is placed on the pad bearing 32, and guarantee pad and beading rope 6 at grade by bearing, the side of pad bearing 32 is provided with pad pretension bolt 33, mainly play the effect that holds out against pad, when pad enters in the otch with beading rope, owing to constantly increase with the contact area that is cut workpiece 7, frictional force also constantly increases, when frictional force during greater than the pretightning force of pad puller bolt, pad comes off, and stays in the otch, guarantee otch can be owing to the gravity effect that is cut part closure.The otch spacer thickness should be less than beading rope diameter, and makes wedge shape near driving wheel 213 directions one side, is convenient to the otch pad and enters otch.
Simultaneously in conjunction with Fig. 5.Described feeding partly includes feeding hydraulic motor 45, gearbox 46, worm type of reduction gearing 47, feed screw nut feed arrangement 48 etc.Gearbox 46 can be realized slowing down and speedup, to adapt to beading rope 6 feeding and the needs return fast at a slow speed; Worm type of reduction gearing 47 and feed screw nut 48 can be realized the decelerating effect of large speed ratio, and the cutting part 2 that feed screw nut 48 promotions simultaneously link is with it realized the feeding and the recoil movement of beading ropes 6; Feeding hydraulic motor 45 links by gearbox 46 and worm type of reduction gearing 47, feed screw nut feed arrangement 48, for the feed motion of beading rope 6 provides power.
Described underwater hydraulic control clack box and detection system 5 are installed on the rope saw body, detection system and hydraulic control valve are all installed and are placed in the airtight clack box, cable and data wire etc. by watertight connector draw clack box outer with lash ship on switch board link, the turnover oil pipe of working connection and each executive component links by hydraulic quick coupler and oil sources and executive component.
The course of work of underwater horizontal type diamond-wire saw of the present invention is:
1. according to the diameter of pipeline to be cut, determine that underwater horizontal type diamond-wire saw clamps the preferred dimension of lobe, clamping lobe by rope saw hydraulic control system control underwater diamond rope saw clamping device is in complete open state, by the complete machine operation interface, clamping major parameter with clamping device, the pressure, the flow that are the clamping hydraulic cylinder are input in the operating system, utilize the boom hoisting on the working mother boat then, and underwater horizontal type diamond-wire saw is hung entry.
2. will under diver's cooperation, the saw of will restricting is transferred to band cutting conduit fittings, and finish just and locate, instruct according to the clamping that the diver sends, operating personnel on the lash ship press the clamping button on the control panel, after finishing the clamping action, press hold button again, the rope saw is in the clamping packing state.The roller that clamps on the lobe mainly plays the effect that reduces to rub.
3. after the clamping action was finished, the diver evacuated to the place of safety, sent the cutting instruction to working mother boat, and the operating personnel on the lash ship press the cutting button, and rope saw driving wheel rotates at a high speed, and drive beading rope is done the tangential motion of relative duct size.
4. after tangential motion is stablized, the diver sends the feeding instruction, operating personnel on the lash ship press automatic button, and the feeding part of rope saw can be adjusted the speed that F.F. and worker advance voluntarily according to the diameter of pipeline, promptly finishes the radial feed motion of cutting part relative duct size automatically.At this moment, the diver can turn back on the working mother boat and await orders.
5. displacement and the pressure by showing on the underwater horizontal type diamond-wire saw control panel, judge that cutting operation is finished after, feed-disabling motion and cutting movement, the saw of restricting this moment still is in the clamping hold mode.
6. diver's dive is loosened beading rope tensioning apparatus near the rope saw, makes beading rope throw off discarded losing in the seabed automatically, perhaps uses special cutter that beading rope is cut off by the diver and brings back on the working mother boat.
7. by the diver hanging device on the working mother boat is connected with the rope saw, after confirming to connect reliably, the diver away from, and send instruction to working mother boat, operating personnel send by operating system and loosen instruction enforcement loosening up, make the clamping hydraulic cylinder implement loosening up, observe by Pressure gauge, when pressure sharply descended, promptly definite loosening up was finished.
8. the saw control system of will restricting outage stops, and the hanging device on the working mother boat starts, and the saw of will restricting hangs to be got back on the working mother boat, and is placed on the bracket.
9. start rope saw, operating personnel send the rewind down instruction by control panel, after the cutting frame of rope saw returns to original position, the closing control system.
10. according to maintenance manual, the rope saw is carried out maintenance timely.
Claims (6)
1, a kind of underwater horizontal type diamond-wire saw comprises be fixedly clamped part (1), cutting part (2), feeding part (4) and underwater hydraulic control clack box and detection system part (5); It is characterized in that: described each several part is installed on the general frame, and described general frame is by roof supporting (41), supports base plate (42), two fixed guide posts (43) and strengthen the gantry type frame structure that gusset (44) connects and composes; The described part (1) that is fixedly clamped includes V-arrangement positioner (11), hydraulic clamp (12), cutting frame guider (13), rail plate gravity bracing or strutting arrangement (14), its V-arrangement positioner (11) is provided with general frame and supports bolt hole and the dowel hole that base plate links, and by bolt and alignment pin clamping part is associated in general frame; Described cutting part (2) includes drive wheel assemblies (21), tensioning wheel assembly (22), guide wheel assemblies (23), rail plate (24), cutting frame (25), drive wheel assemblies (21) relies on flange and the cutting frame active flank (251) on the driving wheel axle sleeve (211) to link, initiatively hydraulic motor inserts in the drive sprocket axle (212), tensioning wheel assembly (22) relies on the pedestal (221) and the riser of the tension wings (252) of cutting frame to link, two the cover guide wheel assemblies (23) is installed in two flanks respectively, and with driving wheel (213), regulating wheel (223) at grade; Described feeding partly includes feeding hydraulic motor (45), gearbox (46), worm type of reduction gearing (47), feed screw nut feed arrangement (48), feeding hydraulic motor (45) links by gearbox (46) and worm type of reduction gearing (47), feed screw nut feed arrangement (48), for the feed motion of beading rope (6) provides power;
2, underwater horizontal type diamond-wire saw according to claim 1, it is characterized in that: also comprise beading rope antiseize device (3), beading rope antiseize device (3) is by otch pad (31), pad bearing (32) and pad pretension bolt (33) are formed, pad bearing (31) is installed in two flanks of cutting frame, otch pad (31) is placed on the pad bearing (32), and guarantee pad and beading rope (6) at grade by bearing, the side of pad bearing (32) is provided with pad pretension bolt (33), the otch spacer thickness is less than beading rope diameter, and close driving wheel (213) direction one side is made wedge shape.
3, underwater horizontal type diamond-wire saw according to claim 2, it is characterized in that: the main body of described fixed guide post (431) is steel pipe, the both ends of fixed guide post (432) are two body structures with the main body (431) of fixed guide post, and the main body of fixed guide post (431) is welded with the both ends (432) of fixed guide post.
4, underwater horizontal type diamond-wire saw according to claim 3 is characterized in that: the reinforcement gusset (44) on the general frame also links with V-arrangement positioner (11).
5, underwater horizontal type diamond-wire saw according to claim 4 is characterized in that: riser becomes (45) degree with direction of feed, and the tensioning of beading rope is tried one's best with joint efforts along the axial direction of tensioning leading screw (222).
6, underwater horizontal type diamond-wire saw according to claim 5, it is characterized in that: described underwater hydraulic control clack box and detection system (5) are installed on the rope saw body, detection system and hydraulic control valve are all installed and are placed in the airtight clack box, cable and data wire etc. by watertight connector draw clack box outer with lash ship on switch board link, the turnover oil pipe of working connection and each executive component links by hydraulic quick coupler and oil sources and executive component.
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| CN200910072533A CN101612683A (en) | 2009-07-17 | 2009-07-17 | Underwater horizontal type diamond-wire saw |
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|---|---|---|---|
| CN200910072533A CN101612683A (en) | 2009-07-17 | 2009-07-17 | Underwater horizontal type diamond-wire saw |
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| CN101859122A (en) * | 2010-06-12 | 2010-10-13 | 泉州华大超硬工具科技有限公司 | Automatic electrical control system for wire saw machine |
| CN101982276A (en) * | 2010-10-25 | 2011-03-02 | 哈尔滨工程大学 | Cutting machine in underwater pipeline |
| CN102229009A (en) * | 2011-04-14 | 2011-11-02 | 哈尔滨工程大学 | Variable structure adaptive feed type rope saw |
| CN103101117A (en) * | 2013-01-15 | 2013-05-15 | 哈尔滨工程大学 | Tube sawing machine rotary cutting tool changing mechanism |
| CN103328760A (en) * | 2011-02-10 | 2013-09-25 | 阿克海底公司 | Subsea clamp connector emergency release tool and method |
| CN103600429A (en) * | 2013-11-12 | 2014-02-26 | 镇江远大传动机械有限公司 | Driving device of rope sawing machine |
| WO2014106081A1 (en) * | 2012-12-28 | 2014-07-03 | 1 Diamond, Llc | Sawing system, sawing support structure and a wire replacement unit and method |
| CN104289755A (en) * | 2014-10-13 | 2015-01-21 | 中石化胜利油建工程有限公司 | Underwater steel pipe cutting device |
| CN104400120A (en) * | 2014-11-25 | 2015-03-11 | 黑龙江大学 | Positioning clamping mechanism for pipeline cutting wire saw |
| CN105751226A (en) * | 2016-04-26 | 2016-07-13 | 哈尔滨工程大学 | Negative-pressure suction and dual-manipulator assisted clamping type underwater steel structure cleaning robot |
| CN107000086A (en) * | 2014-11-26 | 2017-08-01 | 迪亚蒙德第公司 | Succour saw cutting system and method |
| CN107599182A (en) * | 2017-10-18 | 2018-01-19 | 哈尔滨工程大学 | A kind of feed arrangement of submerged riser diamond-wire saw cutting machine |
| CN107598273A (en) * | 2017-09-07 | 2018-01-19 | 上海交大海科检测技术有限公司 | Device and method is cut under the mud removed with Yu Haiyang abandoned well platform pipe |
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| CN113459296A (en) * | 2021-07-20 | 2021-10-01 | 廉江市第三建筑工程有限公司 | Rope saw chain rope anti-blocking device for concrete column cutting and application method |
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| CN117123855A (en) * | 2023-10-27 | 2023-11-28 | 江苏宝昌特种合金科技有限公司 | Adjustable pipeline clamping and cutting integrated machine |
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| CN101982276A (en) * | 2010-10-25 | 2011-03-02 | 哈尔滨工程大学 | Cutting machine in underwater pipeline |
| CN101982276B (en) * | 2010-10-25 | 2012-02-01 | 哈尔滨工程大学 | Cutting machine in underwater pipeline |
| CN103328760B (en) * | 2011-02-10 | 2016-02-24 | 阿克海底公司 | Subsea clamp connector emergency release tool and method |
| CN103328760A (en) * | 2011-02-10 | 2013-09-25 | 阿克海底公司 | Subsea clamp connector emergency release tool and method |
| CN102229009A (en) * | 2011-04-14 | 2011-11-02 | 哈尔滨工程大学 | Variable structure adaptive feed type rope saw |
| CN102229009B (en) * | 2011-04-14 | 2012-10-31 | 哈尔滨工程大学 | Variable structure adaptive feed type rope saw |
| US10786855B2 (en) | 2012-12-28 | 2020-09-29 | 1 Diamond, Llc | Sawing system, sawing support structure and a wire replacement unit and method |
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| CN103101117B (en) * | 2013-01-15 | 2014-12-17 | 哈尔滨工程大学 | Tube sawing machine rotary cutting tool changing mechanism |
| CN103101117A (en) * | 2013-01-15 | 2013-05-15 | 哈尔滨工程大学 | Tube sawing machine rotary cutting tool changing mechanism |
| CN103600429A (en) * | 2013-11-12 | 2014-02-26 | 镇江远大传动机械有限公司 | Driving device of rope sawing machine |
| CN104289755A (en) * | 2014-10-13 | 2015-01-21 | 中石化胜利油建工程有限公司 | Underwater steel pipe cutting device |
| CN104400120A (en) * | 2014-11-25 | 2015-03-11 | 黑龙江大学 | Positioning clamping mechanism for pipeline cutting wire saw |
| CN107000086A (en) * | 2014-11-26 | 2017-08-01 | 迪亚蒙德第公司 | Succour saw cutting system and method |
| US10046405B2 (en) | 2014-11-26 | 2018-08-14 | Quanta Associates, L.P. | Salvage sawing system and method |
| CN105751226A (en) * | 2016-04-26 | 2016-07-13 | 哈尔滨工程大学 | Negative-pressure suction and dual-manipulator assisted clamping type underwater steel structure cleaning robot |
| CN107598273A (en) * | 2017-09-07 | 2018-01-19 | 上海交大海科检测技术有限公司 | Device and method is cut under the mud removed with Yu Haiyang abandoned well platform pipe |
| CN107598273B (en) * | 2017-09-07 | 2024-03-15 | 上海交大海科检测技术有限公司 | Under-mud cutting device and method for dismantling marine abandoned oil well platform pipe |
| CN107599182B (en) * | 2017-10-18 | 2019-06-14 | 哈尔滨工程大学 | A kind of feed arrangement of submerged riser diamond-wire saw cutting machine |
| CN107599182A (en) * | 2017-10-18 | 2018-01-19 | 哈尔滨工程大学 | A kind of feed arrangement of submerged riser diamond-wire saw cutting machine |
| US11339549B2 (en) | 2018-01-30 | 2022-05-24 | Quanta Associates, L.P. | Inclined cut GBS leg |
| CN108637867A (en) * | 2018-05-10 | 2018-10-12 | 北京石油化工学院 | A kind of submarine pipeline grinding device |
| CN112958836A (en) * | 2021-02-20 | 2021-06-15 | 哈尔滨工程大学 | Underwater detachable modular diamond wire saw |
| CN112958836B (en) * | 2021-02-20 | 2022-04-05 | 哈尔滨工程大学 | Underwater detachable modular diamond wire saw |
| CN113459296A (en) * | 2021-07-20 | 2021-10-01 | 廉江市第三建筑工程有限公司 | Rope saw chain rope anti-blocking device for concrete column cutting and application method |
| CN117123855A (en) * | 2023-10-27 | 2023-11-28 | 江苏宝昌特种合金科技有限公司 | Adjustable pipeline clamping and cutting integrated machine |
| CN117123855B (en) * | 2023-10-27 | 2024-01-30 | 江苏宝昌特种合金科技有限公司 | Adjustable pipeline clamping and cutting integrated machine |
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