CN113664430B - Welding device for crane component of marine platform - Google Patents
Welding device for crane component of marine platform Download PDFInfo
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- CN113664430B CN113664430B CN202111239146.8A CN202111239146A CN113664430B CN 113664430 B CN113664430 B CN 113664430B CN 202111239146 A CN202111239146 A CN 202111239146A CN 113664430 B CN113664430 B CN 113664430B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
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Abstract
The invention relates to the technical field of welding, and discloses a welding device for a crane component of a maritime work platform, which comprises a shell, wherein a contact mechanism is movably connected inside the shell, the top of the contact mechanism is fixedly connected with a speed regulating mechanism, one side of the speed regulating mechanism, which is far away from the inner wall of the shell, is fixedly connected with a worm, the outer surface of the worm is movably connected with a moving sleeve, the bottom of the moving sleeve is fixedly connected with a welding mechanism, and the top of the moving sleeve is fixedly connected with a trigger mechanism. Through the meshing relation between the gears, thereby make driven bevel gear rotate, because of the relation of driven bevel gear and worm, thereby make the worm rotate together, and then through the meshing relation between the tooth, thereby drive the protection casing through removing the cover and move along the direction of guide bar, make the welding head weld the loop wheel machine component, thereby reach the thickness according to different specification components, thereby moving speed's when automatic weld mechanism welds effect.
Description
Technical Field
The invention relates to the technical field of welding, in particular to a welding device for a crane component of a maritime work platform.
Background
With the rapid development of modern science and technology, the change of the welding industry is also large, compared with the prior welding technology, the modern welding technology adopts mechanical welding, and members, particularly large members such as a crane member of a maritime work platform and the like, are welded by operating a machine.
However, when welding the components of the crane of the marine platform, the components are large in size, so that when the components with different thicknesses are welded, the moving speed of equipment during welding needs to be adjusted when the welding components are replaced every time, the operation is troublesome, and meanwhile, if harmful smoke and dust generated during welding are not treated timely, the observation of the welding part is easy to cover.
Therefore, the demand for high-reliability products is urgent, and the maritime work platform crane component welding device is provided, which has the advantages that the moving speed of the welding mechanism during welding can be automatically changed according to the thicknesses of components with different specifications, and meanwhile, the effect of automatically absorbing welding smoke dust during welding is achieved.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a welding device for a maritime work platform crane component, which has the advantages that the moving speed of a welding mechanism during welding can be automatically changed according to the thicknesses of components with different specifications, and welding smoke dust can be automatically adsorbed during welding, so that the problem that the observation of a welding part is easily hidden when harmful smoke dust generated during welding is not timely processed if the moving speed of equipment during welding is required to be adjusted every time welding components with different thicknesses and models because the size of the component is large during welding the components with different thicknesses and models is troublesome when the welding component is replaced is solved.
(II) technical scheme
In order to realize the purposes of automatically changing the moving speed of the welding mechanism during welding according to the thicknesses of the components with different specifications and automatically adsorbing welding smoke dust during welding, the invention provides the following technical scheme: marine platform loop wheel machine component welding set, which comprises a housing, the inside swing joint of shell has contact mechanism, contact mechanism top fixedly connected with speed adjusting mechanism, one side fixedly connected with worm that shell inner wall was kept away from to speed adjusting mechanism, worm surface swing joint has the removal cover, remove cover bottom fixedly connected with welding mechanism, remove cover top fixedly connected with trigger mechanism, the trigger mechanism surface just is located the inside cavity of having seted up of shell.
Furthermore, the contact mechanism comprises a roller, the top of the roller is movably connected with a guide pillar, the left side and the right side of the guide pillar are fixedly connected with a limiting rod, and the bottom of the limiting rod is fixedly connected with an extension spring.
Furthermore, the inside multistage gear post that is included of speed adjusting mechanism, one side swing joint that welding mechanism was kept away from to multistage gear post has drive gear, multistage gear post top swing joint has drive bevel gear, drive bevel gear top swing joint has driven bevel gear.
Furthermore, the welding mechanism comprises a protective shell, the left side and the right side of the protective shell are movably connected with fans, the protective shell is movably connected with a guide rod, the protective shell is movably connected with a welding head, and the front end of the protective shell is movably connected with a moving mechanism.
Further, the inside carriage release lever that is included of trigger mechanism, the equal fixedly connected with overcoat casing in the carriage release lever left and right sides, the inside swing joint of overcoat casing has the gag lever post, the sealed piece of one side fixedly connected with of carriage release lever is kept away from to the gag lever post, one side fixedly connected with reset spring that the gag lever post is close to the carriage release lever, one side fixedly connected with trigger block that sealed piece was kept away from to the gag lever post, one side swing joint that the trigger block is close to the carriage release lever has the button.
Furthermore, the extension springs are two and located on the left side and the right side of the guide pillar, and the rollers are cylindrical.
Furthermore, a gear is fixedly connected to the rear end of the moving mechanism, a rack is fixedly connected to the inside of the welding head, the gear is meshed with the rack, and the driving source inside the fan is communicated with a circuit inside the button.
Furthermore, the sealing block is made of rubber materials, the number of the reset springs is two, the reset springs are located at the upper end and the lower end of the trigger block, and the moving rod is located at the upper end of the inner wall of the shell.
Furthermore, the top of the guide pillar is movably connected with the bottom of the multistage gear column, one end, away from the driving bevel gear, of the driven bevel gear is fixedly connected with one end, away from the moving sleeve, of the worm, the bottom of the moving sleeve is fixedly connected with the top of the protective shell, the top of the moving sleeve is fixedly connected with the bottom of the moving rod, and one end, away from the moving rod, of the cavity is provided with a hole.
(III) advantageous effects
Compared with the prior art, the invention provides a welding device for components of a crane of a marine platform, which has the following beneficial effects:
1. this sea worker platform loop wheel machine component welding set, rotate through multistage gear post, because of the relation of being connected of multistage gear post and drive bevel gear, thereby make drive bevel gear rotate together, and then through the meshing relation between the gear, thereby make driven bevel gear rotate, because of the relation of driven bevel gear and worm, thereby make the worm rotate together, and then through the meshing relation between the tooth, thereby drive the protection casing through removing the cover and remove along the direction of guide bar, make the welding head weld the loop wheel machine component, thereby reach the thickness according to different specification components, thereby moving speed's effect when automatic change welding mechanism welds.
2. This maritime work platform loop wheel machine component welding set, when moving left through sealed piece, thereby make inside air can not in time discharge, thereby inside production pressure, and then there is a reaction force to sealed piece, make sealed piece drive cock stem remove right, thereby drive trigger block and button contact, and then make button switch-on current, thereby inside driving source driving fan rotates, thereby induced draft to inside, thereby reach when welding, carry out absorbent effect to the welding smoke and dust automatically.
Drawings
FIG. 1 is a three-dimensional view of the housing structure of the present invention;
FIG. 2 is a front view of the structure of the mobile sleeve of the present invention;
FIG. 3 is a partial view of the structure of the guide post of the present invention;
FIG. 4 is a partial schematic view of the driving bevel gear structure of the present invention;
FIG. 5 is a view of structural parts of the multi-stage gear column of the present invention;
FIG. 6 is a partial schematic view of the protective housing structure of the present invention;
FIG. 7 is a partial schematic view of the sealing block structure of the present invention.
In the figure: 1. a housing; 2. a contact mechanism; 21. a roller; 22. a guide post; 23. a limiting rod; 24. an extension spring; 3. a speed regulating mechanism; 31. a multi-stage gear column; 32. a drive gear; 33. a drive bevel gear; 34. a driven bevel gear; 4. a worm; 5. moving the sleeve; 6. a welding mechanism; 61. a protective housing; 62. a fan; 63. a guide bar; 64. welding a head; 65. a moving mechanism; 7. a trigger mechanism; 71. a travel bar; 72. a jacket shell; 73. a stopper rod; 74. a sealing block; 75. a return spring; 76. a trigger block; 77. a button; 8. a cavity.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The first embodiment is as follows:
referring to fig. 3, 4 and 6, the welding device for crane components of marine platform comprises a housing 1, and is characterized in that: the inside swing joint of shell 1 has contact mechanism 2, 2 top fixedly connected with speed adjusting mechanism 3 of contact mechanism, one side fixedly connected with worm 4 of 1 inner wall of shell is kept away from to speed adjusting mechanism 3, 4 surface swing joints of worm have the removal cover 5, remove 5 bottom fixedly connected with welding mechanism 6 of cover, remove 5 top fixedly connected with trigger mechanism 7 of cover, trigger mechanism 7 surface just is located the inside cavity 8 of having seted up of shell 1.
Further, contact mechanism 2 is inside including gyro wheel 21, and gyro wheel 21 top swing joint has guide pillar 22, and the equal fixedly connected with gag lever post 23 of guide pillar 22 left and right sides, gag lever post 23 bottom fixedly connected with extension spring 24.
Further, the inside multistage gear post 31 that is included of speed adjusting mechanism 3, one side swing joint that welding mechanism 6 was kept away from to multistage gear post 31 has drive gear 32, and multistage gear post 31 top swing joint has drive bevel gear 33, and drive bevel gear 33 top swing joint has driven bevel gear 34.
Furthermore, the welding mechanism 6 includes a protective casing 61, the left and right sides of the protective casing 61 are movably connected with fans 62, the inside of the protective casing 61 is movably connected with a guide rod 63, the inside of the protective casing 61 is movably connected with a welding head 64, and the front end of the protective casing 61 is movably connected with a moving mechanism 65.
When the work starts, the shell 1 moves upwards, the crane component needing to be welded is placed on the workbench at the moment, the crane component is fixed simultaneously, the shell 1 is moved to the original position, the thickness of the component is obtained at the moment, reaction force is provided for the roller 21, the roller 21 moves upwards, the guide pillar 22 is driven to move upwards together, upward pulling force is provided for the stretching spring 24 through the limiting rod 23, the stretching spring 24 is stressed and stretched in the stretching spring 24, elastic potential energy is gathered in the stretching spring, the guide pillar 22 is prepared for resetting, the guide pillar 22 moves upwards simultaneously, the multi-stage gear column 31 is provided with pushing force, the multi-stage gear column 31 is pushed, gears with different teeth numbers are arranged at the upper end of the multi-stage gear column 31 at the moment, and the gear at the upper end of the multi-stage gear column 31 is pushed to be matched with the driving gear 32 along with the thickness of the component, at this time, the moving mechanism 65 is rotated, so that the moving mechanism 65 moves the welding head 64 to perform position adjustment, and at this time, the external driving source is turned on, so that the driving gear 32 starts to rotate, thereby driving the multi-stage gear column 31 to rotate, and the multi-stage gear column 31 and the drive bevel gear 33 are connected, so that the drive bevel gear 33 rotates together, further, the driven bevel gear 34 is rotated by the meshing relationship between the gears, and the worm 4 is rotated together with the driven bevel gear 34 and the worm 4, and then the protective shell 61 is driven by the moving sleeve 5 to move along the guide of the guide rod 63 through the meshing relation between the teeth, so that the welding head 64 welds the crane component, therefore, the thickness of the components with different specifications at the root part of the roller is achieved, and the moving speed of the welding mechanism during welding is automatically changed.
Example two:
referring to fig. 3, 4 and 7, the welding device for the crane component of the marine platform comprises a shell 1, a contact mechanism 2 is movably connected inside the shell 1, a speed regulation mechanism 3 is fixedly connected to the top of the contact mechanism 2, a worm 4 is fixedly connected to one side, far away from the inner wall of the shell 1, of the speed regulation mechanism 3, a moving sleeve 5 is movably connected to the outer surface of the worm 4, a welding mechanism 6 is fixedly connected to the bottom of the moving sleeve 5, a trigger mechanism 7 is fixedly connected to the top of the moving sleeve 5, and a cavity 8 is formed in the outer surface of the trigger mechanism 7 and located inside the shell 1.
Further, contact mechanism 2 is inside including gyro wheel 21, and gyro wheel 21 top swing joint has guide pillar 22, and the equal fixedly connected with gag lever post 23 of guide pillar 22 left and right sides, gag lever post 23 bottom fixedly connected with extension spring 24.
Further, the inside multistage gear post 31 that is included of speed adjusting mechanism 3, one side swing joint that welding mechanism 6 was kept away from to multistage gear post 31 has drive gear 32, and multistage gear post 31 top swing joint has drive bevel gear 33, and drive bevel gear 33 top swing joint has driven bevel gear 34.
Further, the inside movable rod 71 that includes of trigger mechanism 7, the equal fixedly connected with overcoat casing 72 in the left and right sides of movable rod 71, the inside swing joint of overcoat casing 72 has gag lever post 73, one side fixedly connected with sealed piece 74 that gag lever post 73 kept away from movable rod 71, one side fixedly connected with reset spring 75 that gag lever post 73 is close to movable rod 71, one side fixedly connected with trigger block 76 that sealed piece 74 was kept away from to gag lever post 73, one side swing joint that trigger block 76 is close to movable rod 71 has button 77.
Along with the movement of the moving sleeve 5, the moving rod 71 is driven to move, when the moving rod 71 moves to the left, the moving rod 71 drives the outer casing 72 to move to the left together, at the same time, the plug rod 73 moves to the left together due to the connection relationship between the plug rod 73 and the outer casing 72, and further drives the sealing block 74 to move to the left, at the same time, because the outer diameter of the sealing block 74 is slightly larger than the inner diameter of the cavity 8, when the sealing block 74 moves to the left, air in the cavity 8 cannot be discharged in time, so that pressure is generated in the cavity 8, further a reaction force is exerted on the sealing block 74, so that the sealing block 74 drives the plug rod 73 to move to the right, thereby driving the trigger block 76 to contact with the button 77, further enabling the button 77 to be connected with current, and further the internal driving source drives the fan 62 to rotate, thereby sucking air to the inside, and further achieving the purpose of welding, and the effect of automatically adsorbing the welding smoke dust is achieved.
Example three:
referring to fig. 1-6, a maritime work platform crane component welding device comprises a shell 1, a contact mechanism 2 is movably connected inside the shell 1, a roller 21 is arranged inside the contact mechanism 2, the top of the roller 21 is movably connected with a guide pillar 22, the top of the guide pillar 22 is movably connected with the bottom of a multi-stage gear column 31, one end, away from a driving bevel gear 33, of a driven bevel gear 34 is fixedly connected with one end, away from a moving sleeve 5, of a worm 4, the bottom of the moving sleeve 5 is fixedly connected with the top of a protection shell 61, the top of the moving sleeve 5 is fixedly connected with the bottom of a moving rod 71, a hole is formed in one end, away from the moving rod 71, of a cavity 8, limiting rods 23 are fixedly connected to the left side and the right side of the guide pillar 22, extension springs 24 are fixedly connected to the bottom of the limiting rods 23, the extension springs 24 are two and are located on the left side and the right side of the guide pillar 22, and the roller 21 is cylindrical.
Referring to fig. 4, the top of the contact mechanism 2 is fixedly connected with a speed adjusting mechanism 3, the inside of the speed adjusting mechanism 3 includes a multi-stage gear column 31, one side of the multi-stage gear column 31, which is far away from the welding mechanism 6, is movably connected with a driving bevel gear 32, the top of the multi-stage gear column 31 is movably connected with a driving bevel gear 33, and the top of the driving bevel gear 33 is movably connected with a driven bevel gear 34.
Referring to fig. 6, a worm 4 is fixedly connected to one side of the speed adjusting mechanism 3 away from the inner wall of the housing 1, a moving sleeve 5 is movably connected to the outer surface of the worm 4, a welding mechanism 6 is fixedly connected to the bottom of the moving sleeve 5, a protective housing 61 is included inside the welding mechanism 6, fans 62 are movably connected to the left side and the right side of the protective housing 61, a guide rod 63 is movably connected to the inside of the protective housing 61, a welding head 64 is movably connected to the inside of the protective housing 61, a moving mechanism 65 is movably connected to the front end of the protective housing 61, a gear is fixedly connected to the rear end of the moving mechanism 65, a rack is fixedly connected to the inside of the welding head 64, the gear is meshed with the rack, and the internal circuit of the button 77 is communicated with the internal driving source of the fan 62.
Referring to fig. 7, a trigger mechanism 7 is fixedly connected to the top of the movable sleeve 5, a movable rod 71 is included inside the trigger mechanism 7, outer casing bodies 72 are fixedly connected to the left and right sides of the movable rod 71, a plug rod 73 is movably connected to the inside of the outer casing bodies 72, a sealing block 74 is fixedly connected to one side of the plug rod 73, which is far away from the movable rod 71, the sealing block 74 is made of rubber material, two reset springs 75 are provided, which are located at the upper and lower ends of the trigger block 76, the movable rod 71 is located at the upper end of the inner wall of the housing 1, a reset spring 75 is fixedly connected to one side of the plug rod 73, which is close to the movable rod 71, a trigger block 76 is fixedly connected to one side of the plug rod 73, which is far away from the sealing block 74, a button 77 is movably connected to one side of the trigger block 76, which is close to the movable rod 71, and a cavity 8 is formed on the outer surface of the trigger mechanism 7 and located inside the housing 1.
The working principle is that when the working starts, the shell 1 moves upwards, the crane component to be welded is placed on the working table, the crane component is fixed, the shell 1 is moved to the original position, the reaction force is generated on the roller 21 along with the thickness of the component, the roller 21 moves upwards, the guide pillar 22 is driven to move upwards together, the limiting rod 23 exerts an upward pulling force on the extension spring 24, the extension spring 24 is stressed and extended in a stress manner, elastic potential energy is accumulated in the extension spring, the guide pillar 22 is prepared for resetting, the guide pillar 22 moves upwards along with the guide pillar 22, the multi-stage gear column 31 is pushed, gears with different tooth numbers are arranged at the upper end of the multi-stage gear column 31, and the gear at the upper end of the multi-stage gear column 31 is pushed to be matched with the driving gear 32 along with the thickness of the component, at this time, the moving mechanism 65 is rotated, so that the moving mechanism 65 moves the welding head 64 to perform position adjustment, and at this time, the external driving source is turned on, so that the driving gear 32 starts to rotate, thereby driving the multi-stage gear column 31 to rotate, and the multi-stage gear column 31 and the drive bevel gear 33 are connected, so that the drive bevel gear 33 rotates together, further, the driven bevel gear 34 is rotated by the meshing relationship between the gears, and the worm 4 is rotated together with the driven bevel gear 34 and the worm 4, and then the protective shell 61 is driven by the moving sleeve 5 to move along the guide of the guide rod 63 through the meshing relation between the teeth, so that the welding head 64 welds the crane component, therefore, the thickness of the components with different specifications at the root part of the roller is achieved, and the moving speed of the welding mechanism during welding is automatically changed.
Meanwhile, the moving rod 71 is driven to move along with the movement of the moving sleeve 5, when the moving rod 71 moves leftwards, the moving rod 71 drives the outer casing 72 to move leftwards together, at the same time, the plug rod 73 moves leftwards together due to the connection relation between the plug rod 73 and the outer casing 72, the sealing block 74 is driven to move leftwards, at the same time, the outer diameter of the sealing block 74 is slightly larger than the inner diameter of the cavity 8, so that when the sealing block 74 moves leftwards, air in the cavity 8 cannot be discharged timely, pressure is generated in the cavity 8, a reaction force is further exerted on the sealing block 74, the sealing block 74 drives the plug rod 73 to move rightwards, the trigger block 76 is driven to contact with the button 77, the button 77 is connected with current, the internal driving source drives the fan 62 to rotate, air suction is performed on the inside, and welding is performed, and the effect of automatically adsorbing the welding smoke dust is achieved.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (2)
1. Marine platform loop wheel machine component welding set, including shell (1), its characterized in that: the contact mechanism (2) is movably connected inside the shell (1), the roller (21) is arranged inside the contact mechanism (2), a guide pillar (22) is movably connected to the top of the roller (21), limiting rods (23) are fixedly connected to the left side and the right side of the guide pillar (22), an extension spring (24) is fixedly connected to the bottom of each limiting rod (23), a speed regulating mechanism (3) is fixedly connected to the top of the contact mechanism (2), a multi-stage gear column (31) is arranged inside the speed regulating mechanism (3), a driving gear (32) is movably connected to one side, away from the welding mechanism (6), of each multi-stage gear column (31), a driving bevel gear (33) is movably connected to the top of each multi-stage gear column (31), a driven bevel gear (34) is movably connected to the top of each driving bevel gear (33), and a worm (4) is fixedly connected to one side, away from the inner wall of the shell (1), of each speed regulating mechanism (3), the outer surface of the worm (4) is movably connected with a movable sleeve (5), the bottom of the movable sleeve (5) is fixedly connected with a welding mechanism (6), the welding mechanism (6) is internally provided with a protective shell (61), the left side and the right side of the protective shell (61) are movably connected with fans (62), the inner part of the protective shell (61) is movably connected with a guide rod (63), the inner part of the protective shell (61) is movably connected with a welding head (64), the front end of the protective shell (61) is movably connected with a moving mechanism (65), the top of the movable sleeve (5) is fixedly connected with a trigger mechanism (7), a cavity (8) is formed in the outer surface of the trigger mechanism (7) and positioned in the shell (1), the inner part of the trigger mechanism (7) is provided with a moving rod (71), and the left side and the right side of the moving rod (71) are both fixedly connected with outer shell bodies (72), the utility model discloses a fan, including overcoat casing (72), stopper rod (73), one side fixedly connected with sealing block (74) of carriage release lever (71) are kept away from to stopper rod (73), one side fixedly connected with reset spring (75) that stopper rod (73) are close to carriage release lever (71), one side fixedly connected with trigger block (76) of sealing block (74) are kept away from to stopper rod (73), one side movably connected with button (77) that trigger block (76) are close to carriage release lever (71), moving mechanism (65) rear end fixedly connected with gear, the inside fixedly connected with rack of soldered connection (64), gear and rack meshing are connected, fan (62) inside driving source is linked together with button (77) internal circuit, and sealing block (74) are rubber material, reset spring (75) have two, and are located trigger block (76) upper and lower both ends, carriage release lever (71) are located shell (1) inner wall upper end, the top of the guide post (22) is movably connected with the bottom of the multistage gear post (31), one end, far away from the driving bevel gear (33), of the driven bevel gear (34) is fixedly connected with one end, far away from the moving sleeve (5), of the worm (4), the bottom of the moving sleeve (5) is fixedly connected with the top of the protective shell (61), the top of the moving sleeve (5) is fixedly connected with the bottom of the moving rod (71), and one end, far away from the moving rod (71), of the cavity (8) is provided with a hole.
2. The marine platform crane component welding apparatus of claim 1, wherein: the two extension springs (24) are positioned on the left side and the right side of the guide post (22), and the roller (21) is cylindrical.
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| CN210334780U (en) * | 2019-05-15 | 2020-04-17 | 广东国伟兴塑胶科技股份有限公司 | Cutting device is used in production of PC board |
| CN112248454A (en) * | 2020-10-23 | 2021-01-22 | 刘倩 | Special welding equipment and method for anti-freezing nylon pipe fitting special for maritime work platform |
| CN113290312A (en) * | 2020-02-21 | 2021-08-24 | 株式会社Jet | Ultrasonic welding device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US20210178504A1 (en) * | 2019-12-16 | 2021-06-17 | Titan Trailers Inc. | Return Current Roller For Automatic Welder |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN210334780U (en) * | 2019-05-15 | 2020-04-17 | 广东国伟兴塑胶科技股份有限公司 | Cutting device is used in production of PC board |
| CN113290312A (en) * | 2020-02-21 | 2021-08-24 | 株式会社Jet | Ultrasonic welding device |
| CN112248454A (en) * | 2020-10-23 | 2021-01-22 | 刘倩 | Special welding equipment and method for anti-freezing nylon pipe fitting special for maritime work platform |
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