CN101468440A - Clamping device of underwater diamond rope saw - Google Patents
Clamping device of underwater diamond rope saw Download PDFInfo
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- CN101468440A CN101468440A CNA2007103039520A CN200710303952A CN101468440A CN 101468440 A CN101468440 A CN 101468440A CN A2007103039520 A CNA2007103039520 A CN A2007103039520A CN 200710303952 A CN200710303952 A CN 200710303952A CN 101468440 A CN101468440 A CN 101468440A
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- rope saw
- diamond rope
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Abstract
The invention provides a clamping device for an underwater diamond rope sawmill, which comprises a framework, a clamping part and a guiding part, wherein the framework is formed by welding four V-shaped nick main plates and a connecting plate, and the clamping part comprises a clamping hydraulic cylinder and a clamping valve. A piston rod of the clamping hydraulic cylinder is connected with the clamping valve and is also arranged between the first and the second main plates and between the third and the fourth main plates. The guiding part is arranged on the first main plate and comprises a guide rail and a guide sleeve which are correspondingly perpendicular to each other. The clamping device has the advantage of reasonable structure, and is suitable for underwater operation mode and special environment requirements. When used for large pipe diameter clamping, the clamping device can perform the function of guiding cutting operation. The clamping device is suitable for the cutting operation of stand pipes, and also can make radial force for components horizontally arranged of the rope sawmill, which is generated in the cutting process, finally act on the clamping device and the stand pipes. Therefore, the clamping device prevents horizontal components from deforming to ensure the normal operation of the diamond rope sawmill and has an ideal using effect.
Description
Technical field
The present invention relates to cutting operation equipment under water, relate in particular to a kind of clamping device that is used for the underwater diamond rope saw of the pipeline cutting operation that major diameters, multiple materials such as the damaged oil and gas pipes of offshore oil platform jacket and pile foundation and seabed fill.
Background technology
In recent decades, continually developing and building along with offshore oil industry, 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 also increase day by day and are all the more complicated, for example, and exploitation economy, potentially contaminated, to environmental hazard or the like.Therefore, in time and in time stop to produce, and will discard works and problem such as suitably dispose, be subjected to the whole world already and generally paid attention to.
At present, domesticly also do not begin to carry out offshore oil platform jacket and pile foundation cutting operation, the pipeline cutting operation of filling for minor diameter, multiple materials such as the damaged oil and gas pipes in seabed is to adopt the rope saw to finish.This equipment of existing rope saw all is the cutting operation that is used for horizontal pipe, and its shortcoming is: the clamping action in the cutting operation process is that the mode that adopts chain type to clamp is manually finished by the diver, and clamping force is little, is not suitable for the cutting operation of vertical tube; In addition, its guider also is unfavorable for cutting force is delivered on the frame.
In order to adapt to the needs of offshore oil engineering development, such as, to the damaged oil and gas pipes in seabed, the jacket of marine discarded oil field platform and cutting of pile foundation or the like, therefore, can adapt to big caliber under water, the underwater diamond rope saw of multiple material fill pipe cutting operation arises at the historic moment, this underwater diamond rope saw clamping force is big, easy and simple to handle, when finishing cutting operation, the machine stress state is better, it is more steady to work, reliably, but it must be with pile foundation or jacket fixed pedestal during as cutting operation, therefore needing a kind of diamond-wire saw and pile foundation or jacket of can making is close to, and can guarantee the accurate positioning of diamond-wire saw in cutting operation and the clamping device of safety and stability, in view of this, creator of the present invention designs the clamping device of underwater diamond rope saw.
Summary of the invention
Main purpose of the present invention is to overcome the above-mentioned shortcoming that existing product exists, and provide a kind of clamping device of underwater diamond rope saw, its reasonable in design, be fit to the special requirement of underwater operation mode and environment, can be used for the clamping of big caliber, can play guide effect to cutting operation, be suitable for the cutting operation of vertical tube, the radial load to the parts (leading screw) of rope saw horizontally set that produces in the cutting process is finally acted on clamping device and the vertical tube, avoid the distortion of cross member (leading screw), thereby guarantee the normal operation of diamond-wire saw, the result of use ideal.
The objective of the invention is to realize by following technical scheme.
The clamping device of underwater diamond rope saw of the present invention is characterized in that, comprises framework, clamping section and guide part; This framework is made of four mainboards and connecting plate welding; The clamping section comprises the clamping hydraulic cylinder and clamps lobe, and the piston rod of clamping hydraulic cylinder is connected with the clamping lobe, and be arranged between first mainboard and second mainboard and the 3rd mainboard and the 4th mainboard between; Guide part is arranged on first mainboard, and it comprises guide rail and fairlead, and this fairlead is vertical corresponding setting mutually with guide rail.
The clamping device of aforesaid underwater diamond rope saw, wherein mainboard is the plate body that offers V font breach, by a plate by first mainboard and second mainboard welded top one away from breach one side, again by another connecting plate by the 3rd mainboard and the 4th mainboard welded top one away from breach one side, weld one and constitute framework by reinforcement between second and the 3rd mainboard.
The clamping device of aforesaid underwater diamond rope saw, wherein mainboard V font breach top is provided with several lightening holes, and V font breach both sides are provided with several axis holes.
The clamping device of aforesaid underwater diamond rope saw, wherein connecting plate is provided with reinforcement.
The clamping device of aforesaid underwater diamond rope saw wherein is provided with reinforcement between first mainboard and second mainboard.
The clamping device of aforesaid underwater diamond rope saw, wherein guide part is arranged on first mainboard two outside portion, and the fairlead of this guide part is located at the guide rail top, and is vertical configuration with guide rail; This guide rail is a rectangular guideway.
The clamping device of aforesaid underwater diamond rope saw, described clamping lobe comprises the body of rod of two bendings, the upper and lower end parts of this body of rod and top are respectively equipped with corresponding axis hole, and the axis hole of body of rod bottom wears a pinching roller by axostylus axostyle, the pinching roller top body of rod is provided with the clamping panel, the axis hole of body of rod upper end is for wearing a bearing pin, and this bearing pin is connected with the earrings of clamping hydraulic cylinder piston for the body of rod, and the axis hole on body of rod top and the axis hole on top flexibly connect by axostylus axostyle and mainboard axis hole.
The clamping device of aforesaid underwater diamond rope saw, wherein clamping the clamping panel that lobe is provided with is curved panel.
The clamping device of aforesaid underwater diamond rope saw, wherein clamping the clamping panel surface portrayal that lobe is provided with has the lines that increases frictional force.
The beneficial effect of the clamping device of underwater diamond rope saw of the present invention, it comprises framework, clamping section and guide part, reasonable in design, be fit to the special requirement of underwater operation mode and environment, can be used for the clamping of big caliber, can play guide effect to cutting operation, be suitable for the cutting operation of vertical tube, the radial load to the parts (leading screw) of rope saw horizontally set that produces in the cutting process is finally acted on clamping device and the vertical tube, avoid the restricting distortion of saw horizontally set parts (leading screw), thereby guarantee the normal operation of underwater diamond rope saw, satisfactory for result.
Description of drawings:
Figure 1A is the clamping device overall structure schematic perspective view of underwater diamond rope saw of the present invention.
Figure 1B is another overall structure schematic perspective view of the clamping device of underwater diamond rope saw of the present invention.
Fig. 2 clamps the valve structure schematic diagram for the clamping device of underwater diamond rope saw of the present invention.
Fig. 3 is the clamping device user mode schematic diagram of underwater diamond rope saw of the present invention.
Major label description in figure: 1 is V font breach mainboard, 11 lightening holes, 12 axis holes, 2 connecting plates, 3 clamping hydraulic cylinders, 4 clamping lobes, 41 bodies of rod, 42 axis holes, 43 pinching rollers, 44 clamping panels, 45 axis holes, 46 bearing pins, 5 fairleads, 6 guide rails, 7 reinforcements, 8 reinforcements, 9 reinforcements, the clamped body of E.
The specific embodiment
Consult shown in Figure 1A, Figure 1B, the clamping device of underwater diamond rope saw of the present invention, it comprises framework, clamping section and guide part; This framework is made of four mainboards 1 and connecting plate 2 welding; The clamping section comprises hydraulic cylinder 3 and clamps lobe 4, hydraulic cylinder 3 and clamp that lobe 4 is separately positioned between first mainboard and second mainboard and the 3rd mainboard and the 4th mainboard between; Guide part is arranged on first mainboard, and it comprises guide rail 6 and fairlead 5, and this fairlead 5 is vertical corresponding setting mutually with guide rail 6.
The clamping device of underwater diamond rope saw of the present invention, wherein, mainboard 1 is for offering the plate body of V font breach, by a plate 2 by first mainboard and second mainboard welded top one away from breach one side, again by another connecting plate 2 by the 3rd mainboard and the 4th mainboard welded top one away from breach one side, weld one and constitute framework by reinforcement 7 and 8 between second and the 3rd mainboard; The V font breach top of mainboard 1 is provided with several lightening holes 11, and V font breach both sides are provided with several axis holes 12; This connecting plate 2 is provided with the reinforcement (not shown); Be provided with reinforcement 9 between first mainboard and second mainboard; Guide part is arranged on first mainboard two outside portion, and the fairlead 5 of this guide part is located at guide rail 6 tops, and is vertical configuration with guide rail 6, and this guide rail 6 is a rectangular guideway, shown in Fig. 1, Figure 1A.
Consult shown in Figure 2, the clamping device of underwater diamond rope saw of the present invention, it clamps the body of rod 41 that lobe 4 comprises two bendings, the upper and lower end parts of this body of rod 41 and top are respectively equipped with corresponding axis hole 42, and the axis hole 42 of the body of rod 41 bottoms wears a pinching roller 43 by axostylus axostyle, the pinching roller 43 top bodies of rod 41 are provided with and clamp panel 44, the axis hole 45 of the body of rod 41 upper ends is for wearing a bearing pin 46, by bearing pin 46 body of rod 41 is connected with the earrings of clamping hydraulic cylinder 3 pistons, the axis hole 42 on the body of rod 41 tops flexibly connects by axostylus axostyle and mainboard 1 axis hole 12; The clamping panel 44 that this clamping lobe 4 is provided with is curved panel, and clamps the clamping panel 44 surperficial lines (not shown) that increase frictional force is arranged of portraying that lobe 4 is provided with.
Consult shown in Figure 3, the course of work of the clamping device of underwater diamond rope saw of the present invention:
Clamping process:
1. the clamping lobe 4 by rope saw hydraulic control system control underwater diamond rope saw clamping device is in complete open state;
2. by the complete machine operation interface, with the clamping major parameter of clamping device, promptly the pressure of clamping hydraulic cylinder 3, flow are input in the operating system, and be ready for implementing to clamp action;
3. by the hanging device on the working mother boat, the saw of will restricting hangs entry, and move near the jacket to be cut, send instruction under water by the diver, v-shaped openings that the saw clamping device has a mainboard 1 of V font breach leans against on the pipeline E to assist the operating personnel of hanging device to restrict, and makes complete machine finish the location;
4. the diver sends the information of implementing to clamp action by communication apparatus to the lash ship operating personnel, operating personnel send by operating system and clamp instruction, make the hydraulic cylinder 3 of clamping section implement to clamp action, and the clamping panel 44 that makes the clamping section that the clamping lobe is set is clamped in pipeline lateral wall place, observe Pressure gauge, when reaching predetermined pressure, generally be when pressure reaches the 7Mpa left and right sides, think that promptly clamping action finishes.In clamping action, when the clamping panel 44 that clamps lobe when being cut large-diameter pipeline, utilize roller 43 effects that clamp lobe, make to clamp the frictional force that forms between panel 44 and the pipeline E and reduce, can more help diver's assistance installation like this.
Loosen process:
1. underwater diamond rope saw is finished after the cutting operation, send instruction by the operating system on the working mother boat, stop all cutting actions, the tensioning apparatus of diamond-wire saw is loosened, the beading rope of diamond-wire saw is thrown off automatically, perhaps use special hydraulic tongs that beading rope is cut off, for the recovery of rope saw is got ready by the diver;
2. by the complete machine operation interface of diamond-wire saw, with the major parameter that loosens of clamping device, promptly the pressure of clamping hydraulic cylinder 3, flow are input in the operating system, and be ready for implementing loosening up;
3. 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, the enforcement loosening up also moves near the jacket to be cut, send instruction under water by the diver, assist will the restrict clamping device of saw of the operating personnel of hanging device to be close on pipeline, make complete machine finish the location;
4. the diver sends the information of implementing loosening up by communication apparatus to the lash ship operating personnel, operating personnel send by operating system and loosen instruction, make the clamping hydraulic cylinder implement loosening up, observe by Pressure gauge, when pressure sharply reduced, promptly definite loosening up was finished.
The operation principle of underwater diamond rope saw clamping device of the present invention:
1, it comprises framework, clamping section and guide part; This framework is made of four mainboards 1 and connecting plate 2 welding; The clamping section comprises clamping hydraulic cylinder 3 and clamps lobe 4, clamping hydraulic cylinder 3 and clamp that lobe 4 is separately positioned between first mainboard and second mainboard and the 3rd mainboard and the 4th mainboard between; It is close on jacket or pile foundation by mainboard 1, can play the effect of location, clamp lobe 4 simultaneously under the effect of clamping hydraulic cylinder 3, make to clamp panel 44 and be clamped on the pipeline E, fix thereby allow the body of underwater diamond rope saw complete machine be cut target relatively.Complete machine hangs entry by the lowering equipment on the working mother boat, sends instruction by the diver, makes lowering equipment with the close target that is cut of complete machine, assists to finish installation by the diver.
2, first mainboard with V font breach, as Fig. 1, shown in Figure 1A, its two outside is respectively arranged with fairlead 5 and guide rail 6, fairlead 5 and guide rail 6 are by being bolted on first mainboard, the fairlead 5 of this guide part is located at guide rail 6 tops, and be vertical configuration with guide rail 6, fairlead 5 and guide rail 6 match with the sliding axle and the guide pad of cutter sweep of rope saw respectively, the sliding axle of cutter sweep slides in fairlead 5, the guide pad of cutter sweep slides in the rectangular channel of guide rail 6, like this, radial load and deadweight own that the rope saw is produced in cutting process finally are delivered on the pipeline E by clamping device, and complete machine when work Oscillation Amplitude is reduced greatly, guaranteed the stability of complete machine cutting operation.
3, clamp lobe 4 and be cut pipeline E employing arc contact surface, can increase the active area of clamping force, make to clamp and move more reliably, stablize, the surface that arc clamps panel 44 depicts tiny lines, can increase the frictional force of contact-making surface, be more conducive to the clamping operation of vertical tube.
4, clamp lobe 4 ends and be provided with clamping lobe roller 43.Because the underwater diamond rope saw volume of this type is big, weight is also big, can make and clamp lobe 4 and clamp lobe roller 43, reduce to clamp the frictional force between panel 44 and the pipeline E, more help diver's assistance installation near the time to the large-diameter pipeline E that is cut.
5, reinforcement 7 and 8 are set having between second of V font breach and the 3rd mainboard, further strengthened the intensity of framework, make the intensity and the rigidity of framework can both satisfy support, clamp and the guiding requirement, the sliding axle end of cutter sweep is equipped with guide pad, this guide pad slides in rectangular guideway 6, guaranteed that sliding axle can not improve the reliability of clamping device work simultaneously owing to deforming automatically.The reinforcement that is provided with on the connecting plate 2 has increased the integrated support intensity of clamping device framework, when guaranteeing clamping force, and the stability when also having strengthened the operation of rope saw.
6, mainboard V font breach top is provided with several lightening holes, and overall weight that can the weight reduction clamping device is convenient to operation.
The advantage of the clamping device of underwater diamond rope saw of the present invention: the cutter sweep of rope saw stably can be fixed on and be cut on the pipeline, simultaneously the feed motion of cutter sweep be played the effect of guiding, structural design is simple, practical.It adopts four clamping hydraulic cylinders that clamping force is provided, and can make hydraulic cylinder be in locking state in clamping process by hydraulic control system, guarantees the stable, reliable of clamping; Clamping frames is made up of as gripper shoe four mainboards with V font breach, the underwater diamond rope saw complete machine is played positioning action, the pipeline that can adapt to different tube diameters carries out cutting operation, provide mounting platform for cutter sweep and hydraulic control clack box simultaneously, for radial feed provides guiding; Clamping lobe can change according to the difference that is cut pipe diameter, clamps the lobe end and is provided with clamping lobe roller, makes clamping device in the process that clamps near pipeline, and the frictional force that clamps between lobe and the pipeline reduces, and is convenient to the diver and assists to install; Between mainboard, reinforcement is set, makes mainboard intensity and rigidity can both satisfy support, clamp and the guiding requirement, and improved the reliability and stability of the work of clamping device integral body with V font breach; On first mainboard (as shown in Figure 1), fairlead and guide rail are set, it matches with the sliding axle of cutter sweep, radial load and deadweight own that the rope saw is produced in cutting process finally are delivered on the pipeline by clamping device, Oscillation Amplitude reduces greatly in the time of making simultaneously the work of underwater diamond rope saw complete machine, has guaranteed the stability of cutting operation.Characteristics such as that this underwater diamond rope saw clamping device has is simple in structure, operation, maintenance, easy maintenance.
The above, it only is preferred embodiment of the present invention, be not that the present invention is done any pro forma restriction, every foundation technical spirit of the present invention all still belongs in the scope of technical solution of the present invention any simple modification, equivalent variations and modification that above embodiment did.
Claims (9)
1, a kind of clamping device of underwater diamond rope saw is characterized in that, comprises framework, clamping section and guide part; This framework is made of four V-shape breach mainboards and connecting plate welding; The clamping section comprises the clamping hydraulic cylinder and clamps lobe, and the piston rod of clamping hydraulic cylinder is connected with the clamping lobe, and be arranged between first mainboard and second mainboard and the 3rd mainboard and the 4th mainboard between; Guide part is arranged on first mainboard, and it comprises guide rail and fairlead, and this fairlead is vertical corresponding setting mutually with guide rail.
2, the clamping device of underwater diamond rope saw according to claim 1, it is characterized in that, described mainboard is the plate body that offers V font breach, by a plate by first mainboard and second mainboard welded top one away from breach one side, again by another connecting plate by the 3rd mainboard and the 4th mainboard welded top one away from breach one side, weld one and constitute framework by reinforcement between second and the 3rd mainboard.
3, the clamping device of underwater diamond rope saw according to claim 1 and 2 is characterized in that, described mainboard V font breach top is provided with several lightening holes, and V font breach both sides are provided with several axis holes.
4, the clamping device of underwater diamond rope saw according to claim 1 and 2 is characterized in that, described connecting plate is provided with reinforcement.
5, the clamping device of underwater diamond rope saw according to claim 1 and 2 is characterized in that, is provided with reinforcement between described first mainboard and second mainboard.
6, the clamping device of underwater diamond rope saw according to claim 1 is characterized in that, described guide part is arranged on first mainboard two outside portion, and the fairlead of this guide part is located at the guide rail top, and is vertical configuration with guide rail; This guide rail is a rectangular guideway.
7, the clamping device of underwater diamond rope saw according to claim 1, it is characterized in that, described clamping lobe comprises the body of rod of two bendings, the upper and lower end parts of this body of rod and top are respectively equipped with corresponding axis hole, and the axis hole of body of rod bottom wears a pinching roller by axostylus axostyle, the pinching roller top body of rod is provided with the clamping panel, the axis hole of body of rod upper end is for wearing a bearing pin, this bearing pin is connected with the earrings of clamping hydraulic cylinder piston for the body of rod, and the axis hole on body of rod top flexibly connects by axostylus axostyle and mainboard axis hole.
8, the clamping device of underwater diamond rope saw according to claim 7 is characterized in that, the clamping panel that described clamping lobe is provided with is a curved panel.
According to the clamping device of claim 7 or 8 described underwater diamond rope saws, it is characterized in that 9, the clamping panel surface portrayal that described clamping lobe is provided with has the lines that increases frictional force.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007103039520A CN101468440A (en) | 2007-12-24 | 2007-12-24 | Clamping device of underwater diamond rope saw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007103039520A CN101468440A (en) | 2007-12-24 | 2007-12-24 | Clamping device of underwater diamond rope saw |
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| Publication Number | Publication Date |
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| CN101468440A true CN101468440A (en) | 2009-07-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007103039520A Pending CN101468440A (en) | 2007-12-24 | 2007-12-24 | Clamping device of underwater diamond rope saw |
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| CN (1) | CN101468440A (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102229009A (en) * | 2011-04-14 | 2011-11-02 | 哈尔滨工程大学 | Variable structure adaptive feed type rope saw |
| CN102873581A (en) * | 2012-09-21 | 2013-01-16 | 哈尔滨工程大学 | Magnetic non-contact drive pipeline clamping device |
| CN102923563A (en) * | 2012-10-26 | 2013-02-13 | 贵州航天特种车有限责任公司 | Universal hoisting clamp for circular tube |
| CN103328760A (en) * | 2011-02-10 | 2013-09-25 | 阿克海底公司 | Subsea clamp connector emergency release tool and method |
| CN104400119A (en) * | 2014-11-25 | 2015-03-11 | 黑龙江大学 | Pipeline cutting wire saw |
| CN104400120A (en) * | 2014-11-25 | 2015-03-11 | 黑龙江大学 | Positioning clamping mechanism for pipeline cutting wire saw |
| 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 |
| CN114505968A (en) * | 2022-02-15 | 2022-05-17 | 浙江晶阳机电股份有限公司 | Automatic ingot casting silicon core cutting-off equipment with waste recovery function and operation method thereof |
| CN114559098A (en) * | 2018-10-27 | 2022-05-31 | 里奇工具公司 | Pipe cutting tool and attachment for such a tool |
| US11958208B2 (en) | 2018-10-27 | 2024-04-16 | Ridge Tool Company | Dual blade guard for pipe cut-off tools |
-
2007
- 2007-12-24 CN CNA2007103039520A patent/CN101468440A/en active Pending
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103328760A (en) * | 2011-02-10 | 2013-09-25 | 阿克海底公司 | Subsea clamp connector emergency release tool and method |
| CN103328760B (en) * | 2011-02-10 | 2016-02-24 | 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 |
| CN102873581A (en) * | 2012-09-21 | 2013-01-16 | 哈尔滨工程大学 | Magnetic non-contact drive pipeline clamping device |
| CN102873581B (en) * | 2012-09-21 | 2014-10-22 | 哈尔滨工程大学 | Magnetic non-contact drive pipeline clamping device |
| CN102923563A (en) * | 2012-10-26 | 2013-02-13 | 贵州航天特种车有限责任公司 | Universal hoisting clamp for circular tube |
| CN102923563B (en) * | 2012-10-26 | 2014-12-17 | 贵州航天特种车有限责任公司 | Universal hoisting clamp for circular tube |
| CN104400120A (en) * | 2014-11-25 | 2015-03-11 | 黑龙江大学 | Positioning clamping mechanism for pipeline cutting wire saw |
| CN104400119A (en) * | 2014-11-25 | 2015-03-11 | 黑龙江大学 | Pipeline cutting wire saw |
| 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 |
| CN114559098A (en) * | 2018-10-27 | 2022-05-31 | 里奇工具公司 | Pipe cutting tool and attachment for such a tool |
| US11958208B2 (en) | 2018-10-27 | 2024-04-16 | Ridge Tool Company | Dual blade guard for pipe cut-off tools |
| CN114505968A (en) * | 2022-02-15 | 2022-05-17 | 浙江晶阳机电股份有限公司 | Automatic ingot casting silicon core cutting-off equipment with waste recovery function and operation method thereof |
| CN114505968B (en) * | 2022-02-15 | 2022-09-23 | 浙江晶阳机电股份有限公司 | Automatic ingot casting silicon core cutting-off equipment with waste recovery function and operation method thereof |
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Open date: 20090701 |