CN111299951A - Special chain device for welding device for circumferential butt joint of steel pipe and neck flange - Google Patents
Special chain device for welding device for circumferential butt joint of steel pipe and neck flange Download PDFInfo
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- CN111299951A CN111299951A CN201911253414.4A CN201911253414A CN111299951A CN 111299951 A CN111299951 A CN 111299951A CN 201911253414 A CN201911253414 A CN 201911253414A CN 111299951 A CN111299951 A CN 111299951A
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- chain
- fixed
- steel pipe
- welding
- butt joint
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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
- B23K37/04—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work
- B23K37/053—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work aligning cylindrical work; Clamping devices therefor
- B23K37/0533—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work aligning cylindrical work; Clamping devices therefor external pipe alignment clamps
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
Abstract
The invention discloses a special chain device for a welding device for circumferential butt joint of a steel pipe and a flange with a neck, which comprises a platform, a fixed roller carrier, an interval adjusting handle, a locking handle, a movable roller carrier, a chain fixing frame, a steel pipe and a chain mechanism, wherein the chain mechanism is arranged at the upper end of the chain fixing frame and is bound by a chain body along the outer diameter direction of the steel pipe, the movable end of the chain body penetrates through a screw rod at the bottom of the locking handle, the locking handle is rotated to enable the locking handle to drive the screw rod to perform thread transmission on the inner side of a fixing plate, so that the chain body is locked by the screw rod and is clamped on the inner side of a limit lug at the upper end of a fixing seat to fix the chain body, a chain wheel is arranged on the inner side of the chain body, the steel pipe can rotate 360 degrees along the chain wheel on the chain body, and the, the welding quality is stable.
Description
Technical Field
The invention relates to the relevant field of welding devices, in particular to a special chain device for a welding device for circumferential butt joint of a steel pipe and a flange with a neck.
Background
In the power transmission line steel pipe tower, a large number of steel pipes are connected in a butt joint mode through forged flanges with necks, and the butt joint welding seam of the steel pipes and the forged flanges with the necks meets the primary welding seam quality standard; the traditional welding method generally adopts manual welding, strict requirements are imposed on the operating skill and welding level of a welder, the welding quality is unstable and the welding efficiency is low, the existing welding device for circumferential butt joint of the steel pipe and the flange with the neck is generally used for placing the steel pipe in the middle of a roller to simply fix the steel pipe, axial and longitudinal movement easily occurs in the welding process of circumferential butt joint of the steel pipe and the flange with the neck, the welding quality of circumferential butt joint seams is unstable, the appearance molding of the seams is poor, and internal defects of the seams are easily caused.
Disclosure of Invention
Therefore, in order to solve the above-mentioned disadvantages, the present invention provides a chain device dedicated for a welding device for circumferential butt-jointing of a steel pipe and a neck flange.
The invention is realized in such a way that a special chain device for a welding device for circumferential butt joint of a steel pipe and a flange with a neck is constructed, the device comprises a platform, a fixed roller carrier, an interval adjusting handle, a locking handle, a movable roller carrier, a chain fixing frame, a steel pipe and a chain mechanism, wherein the platform is locked and fixed with the bottom of a cylinder through an inner hexagon bolt, the front end and the rear end of the top of the platform are oppositely provided with slide rails, the slide rails are in sliding fit with the bottom of a sliding table, pulleys are oppositely fixed at four corners of the bottom of the movable roller carrier and slide along the top of a square steel rail, the fixed roller carrier is fixed with the chain fixing frame into a whole through electric welding, the steel pipe is tightly attached to the inner side of each roller, the chain mechanism is fixedly arranged at the right end of the top of the chain fixing frame, the chain mechanism comprises a, accept strip one end and pass through hinge pin and the inboard normal running fit of fixed block to it is fixed that the strip other end extends to chain body left end, the fixing base closely fixes through electric welding and the right front end in platform top, the chain body adopts clearance fit's mode to hang in the fixing base upper end.
Preferably, the embedding of slip table top has the locking lever to locking lever and the inboard screw-thread fit in slip table top, slip table right-hand member fixed mounting has the conducting block, the platform with prevent scurrying axle bottom bolted connection to prevent scurrying axle rear end and fixed roller frame fixed connection, the platform is fixed with fixed roller frame bottom through electric welding, both ends rotate around fixed roller frame and the roller drive shaft and are connected, both ends are provided with the gyro wheel relatively around the fixed roller frame top, interval adjustment handle and fixed roller frame front end output shaft normal running fit, the mode that the locking handle passes through electric welding closely fixes with platform top right front end, the platform right-hand member is provided with the square steel track, the square steel track passes through the screw and is fixed with guide rail bottom locking, guide rail and portable roller frame bottom sliding fit.
Preferably, the chain body comprises a first chain piece, a second chain piece, a chain wheel and a chain shaft, the first chain piece is in running fit with the left front end of the second chain piece through a hinge shaft, and the chain shaft is connected with the chain wheel.
Preferably, the bottom of the locking handle is provided with a screw rod, the locking handle and the top of the screw rod are fixed into a whole through electric welding, the bottom of the screw rod is provided with a fixing plate, the screw rod is in threaded fit with the inner side of the top of the fixing plate, and the platform and the bottom of the fixing plate are fixed through electric welding.
Preferably, the top of the fixed seat is provided with two limiting lugs.
Preferably, the inclination angle of the fixing seat is sixty degrees, and the fixing seat is rectangular.
Preferably, the chain body is formed by mutually overlapping and connecting a first chain piece and a second chain piece, and a chain shaft and a chain wheel are arranged at the joint of the first chain piece and the second chain piece.
Preferably, the number of the rollers is four, and the rollers are grouped in pairs and are respectively positioned at the front end and the rear end of the top of the fixed roller carrier and the front end and the rear end of the top of the movable roller carrier.
Preferably, the chain placing groove is formed in the right end of the top of the chain fixing frame, and the diameter of the chain body is smaller than five millimeters of the diameter of the chain placing groove in the right end of the top of the chain fixing frame.
The invention has the following advantages: the invention provides a special chain device for a welding device for circumferential butt joint of a steel pipe and a flange with a neck through improvement, compared with the same type of equipment, the special chain device has the following improvement:
according to the special chain device for the welding device for circumferential butt joint of the steel pipe and the flange with the neck, the chain mechanism is arranged at the upper end of the chain fixing frame and is bound by the chain body along the outer diameter direction of the steel pipe, the movable end of the chain body penetrates through the screw at the bottom of the locking handle, the locking handle is rotated to enable the locking handle to drive the screw to perform thread transmission on the inner side of the fixing plate, the chain body is locked by the screw, the chain body is clamped on the inner side of the limiting lug at the upper end of the fixing seat and is fixed, and the chain wheel is arranged on the inner side of the chain body, so that after the steel pipe is locked by the chain body, the steel pipe is prevented from axially moving along the chain wheel on the chain body for 360 degrees in the circumferential rotation process, the welding quality is stable, the appearance of a.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is an effect diagram of the steel pipe neck flange welding tool of the invention;
FIG. 3 is a schematic structural view of a steel pipe welding tool with a neck flange according to the present invention;
FIG. 4 is a schematic structural diagram of a steel pipe welding tool with a neck flange in a top view;
FIG. 5 is a schematic view of a partial structure of the slide table and related components of the present invention;
FIG. 6 is a schematic view of the structure of the fixed roller frame and the chain of the present invention;
FIG. 7 is a partial schematic view of the movable roller frame and associated components of the present invention;
FIG. 8 is a schematic side view of the chain mechanism of the present invention;
FIG. 9 is a schematic view of a partial structure of the chain body of the present invention;
fig. 10 is a partial structural schematic view of the fixing base of the present invention.
Wherein: the device comprises a platform-1, a cylinder-2, a slide rail-3, a sliding table-4, a lock rod-5, a conductive block-6, a flee-proof shaft-7, a fixed roller frame-8, a roller transmission shaft-9, a roller-10, a chain mechanism-11, a spacing adjusting handle-12, a locking handle-13, a movable roller frame-14, a pulley-15, a guide rail-16, a square steel rail-17, a chain fixing frame-18, a steel pipe-19, a fixing block-111, a bearing strip-112, a fixing seat-113, a chain body-114, a first chain sheet-1141, a second chain sheet-1142, a chain wheel-1143, a chain shaft-1144, a screw rod-131, a fixing plate-132 and a limit bump-1131.
Detailed Description
The present invention will be described in detail with reference to fig. 1 to 10, and the technical solutions in the embodiments of the present invention will be clearly and completely described, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all 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 invention provides a special chain device for a welding device for circumferential butt joint of a steel pipe and a flange with a neck, which comprises a platform 1, a fixed roller frame 8, an interval adjusting handle 12, a locking handle 13, a movable roller frame 14, a chain fixing frame 18, a steel pipe 19 and a chain mechanism 11, wherein the platform 1 is locked and fixed with the bottom of an air cylinder 2 through hexagon socket head bolts, the front end and the rear end of the top of the platform 1 are oppositely provided with slide rails 3, the slide rails 3 are in sliding fit with the bottom of a sliding table 4, four corners of the bottom of the movable roller frame 14 are oppositely fixed with pulleys 15, the pulleys 15 slide along the top of a square steel rail 17, the fixed roller frame 8 is fixed with the chain fixing frame 18 into a whole through electric welding, the steel pipe 19 is tightly attached to the inner side of the roller 10, the chain mechanism 11 is fixedly arranged at the right end of the top, fixed block 111 is fixed with 18 top right ends of chain mount through the electric welding, accept 112 one ends of strip and pass through the inboard normal running fit of hinge pin and fixed block 111, and it is fixed to accept the strip 112 other end and extend to chain body 114 left end, do benefit to and play the effect of carrying out fixed connection to fixed block 111 and chain body 114, fixing base 113 closely fixes through electric welding and 1 top right front end of platform, do benefit to and play the effect of carrying out fixed mounting to fixing base 113, chain body 114 adopts clearance fit's mode to hang in fixing base 113 upper end.
Furthermore, a lock rod 5 is embedded in the top of the sliding table 4, and the lock rod 5 is in threaded fit with the inner side of the top of the sliding table 4, the right end of the sliding table 4 is fixedly provided with a conductive block 6, the platform 1 is connected with the bottom of the anti-channeling shaft 7 through a bolt, the rear end of the anti-channeling shaft 7 is fixedly connected with the fixed roller frame 8, the platform 1 is fixed with the bottom of the fixed roller frame 8 through electric welding, the fixed roller carrier 8 is rotationally connected with the front end and the rear end of the roller transmission shaft 9, the front end and the rear end of the top of the fixed roller carrier 8 are oppositely provided with rollers 10, the spacing adjusting handle 12 is rotationally matched with an output shaft at the front end of the fixed roller frame 8, the locking handle 13 is tightly fixed with the right front end at the top of the platform 1 in an electric welding mode, the right end of the platform 1 is provided with a square steel track 17, the square steel track 17 is locked and fixed with the bottom of the guide rail 16 through screws, and the guide rail 16 is in sliding fit with the bottom of the movable roller carrier 14.
Further, the chain body 114 includes a first chain piece 1141, a second chain piece 1142, a sprocket 1143 and a chain shaft 1144, the first chain piece 1141 is rotatably engaged with the left front end of the second chain piece 1142 via a hinge shaft, the joint of the first chain piece 1141 and the second chain piece 1142 is rotatably connected with the chain shaft 1144, and the chain shaft 1144 is connected with the sprocket 1143.
Further, locking handle 13 bottom is provided with screw rod 131 to locking handle 13 is fixed as an organic whole through the electric welding with the screw rod 131 top, screw rod 131 bottom is provided with fixed plate 132, and screw rod 131 is with the inboard screw-thread fit in fixed plate 132 top, platform 1 is fixed mutually through the electric welding with fixed plate 132 bottom, does benefit to and plays the effect of fixing spacingly to chain body 114.
Further, fixing base 113 top is provided with spacing lug 1131 to spacing lug 1131 is provided with two altogether, does benefit to and plays the effect of fixing spacing to chain body 114.
Further, the inclination angle of the fixing base 113 is sixty degrees, and the fixing base 113 is in a rectangular parallelepiped shape, but of course, the inclination angle of the fixing base 113 may also be larger, and the specific inclination angle is designed according to the actual use condition.
Further, the chain body 114 is formed by overlapping and connecting a first chain piece 1141 and a second chain piece 1142, and a chain shaft 1144 and a chain wheel 1143 are arranged at the joint of the first chain piece 1141 and the second chain piece 1142, so that the welding rotation process of the steel pipe 19 can be facilitated to rotate in a 360-degree circumferential manner.
Furthermore, four rollers 10 are arranged, and two rollers 10 form a group, and are respectively located at the front end and the rear end of the top of the fixed roller frame 8 and the front end and the rear end of the top of the movable roller frame 14, so as to be beneficial to stably supporting the steel pipe 19.
Further, the right end of the top of the chain fixing frame 18 is provided with a chain placing groove, and the diameter of the chain body 114 is smaller than the diameter of the chain placing groove at the right end of the top of the chain fixing frame 18 by five millimeters, so that the chain body 114 can be placed conveniently.
The invention provides a special chain device for a welding device for circumferential butt joint of a steel pipe and a flange with a neck through improvement, which has the following working principle:
firstly, before use, horizontally placing a welding device with a steel pipe and a neck flange in circumferential butt joint, and enabling a square steel rail 17 to fixedly support the welding device;
secondly, when in use, an operator firstly places a workpiece to be welded on the rollers 10 at the upper ends of the fixed roller frame 8 and the movable roller frame 14, then respectively rotates the distance adjusting handles 12 at the upper ends of the fixed roller frame 8 and the movable roller frame 14 to enable the inner side of the thickness of the flange with a neck to be in flush contact with the anti-channeling shaft 7 so as to prevent the steel pipe 19 from longitudinally shifting in the welding process, the steel pipe 19 is bound along the outer diameter direction of the steel pipe 19 by the chain body 114, the movable end of the chain body 114 passes through the screw 131 at the bottom of the locking handle 13, the locking handle 13 is rotated to enable the locking handle 13 to drive the screw 131 to carry out thread transmission at the inner side of the fixed plate 132, further the screw 131 locks the chain body 114, and the chain body 114 is clamped at the inner side of the limit bump 1131 at the upper end of the fixed seat 113 to fix the chain body, the steel pipe 19 can rotate 360 degrees along the chain wheel 1143 on the chain body 114, and the structure can effectively prevent the steel pipe 19 from axially moving in the welding process while the steel pipe 19 rotates;
and thirdly, next, one end of a conductive block 6 is connected with the negative electrode of a welding power supply, one end of the conductive block is in contact connection with a workpiece, the conductive block 6 is adjusted through the sliding table 4 and the sliding rail 3 to adjust the distance and height between the conductive block and the workpiece, the welding equipment can be started to complete the welding of the steel pipe 19 and the neck flange, and meanwhile, the sliding table 4 is driven to move on the sliding rail 3 through the work of the cylinder 2, so that the position of the conductive block 6 can be conveniently adjusted.
The invention provides a special chain device for a welding device for circumferential butt joint of a steel pipe and a flange with a neck through improvement, a chain mechanism 11 is arranged at the upper end of a chain fixing frame 18 and is bound by a chain body 114 along the outer diameter direction of the steel pipe 19, the movable end of the chain body 114 passes through a screw 131 at the bottom of a locking handle 13, the locking handle 13 is rotated, the locking handle 13 drives the screw 131 to perform thread transmission on the inner side of a fixing plate 132, so that the screw 131 locks the chain body 114, the chain body 114 is clamped on the inner side of a limiting bump 1131 at the upper end of a fixing seat 113 to fix the chain body 114, a chain wheel 1143 is arranged on the inner side of the chain body 114, after the steel pipe 19 is locked by the chain body, the steel pipe 19 can rotate for 360 degrees along the chain wheel 1143 on the chain body 114, and the steel pipe can be effectively prevented from, the advantages of stable welding quality, formed appearance of the welding seam and good internal quality of the welding seam are achieved.
The basic principles and main features of the present invention and the advantages of the present invention have been shown and described, and the standard parts used in the present invention are all available on the market, the special-shaped parts can be customized according to the description and the accompanying drawings, and the specific connection mode of each part adopts the conventional means of bolt, welding and the like mature in the prior art, and the detailed description is not provided herein.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (9)
1. The utility model provides a special chain device of welding set of steel pipe and neck flange hoop butt joint, includes platform (1), fixed roller frame (8), interval adjustment handle (12), locking handle (13), portable roller frame (14), chain mount (18) and steel pipe (19), platform (1) is fixed with cylinder (2) bottom locking through hexagon socket head cap screw, both ends are provided with slide rail (3) relatively around platform (1) top, slide rail (3) and slip table (4) bottom sliding fit, portable roller frame (14) bottom four corners relatively fixed has pulley (15) to pulley (15) slide along square steel track (17) top, fixed roller frame (8) are fixed as an organic whole through electric welding and chain mount (18), steel pipe (19) and gyro wheel (10) closely laminate; the method is characterized in that: still include chain mechanism (11), chain mechanism (11) fixed mounting is in chain mount (18) top right-hand member, chain mechanism (11) include fixed block (111), accept strip (112), fixing base (113) and chain body (114), fixed block (111) are fixed mutually with chain mount (18) top right-hand member through the electric welding, accept strip (112) one end and pass through hinge pin and fixed block (111) inboard normal running fit to it is fixed to accept strip (112) other end and extend to chain body (114) left end, fixing base (113) are closely fixed with platform (1) top right front end through the electric welding, chain body (114) adopt clearance fit's mode to hang in fixing base (113) upper end.
2. The special chain device for the welding device for circumferential butt joint of the steel pipe and the necked flange according to claim 1, is characterized in that: the embedding of slip table (4) top has locking lever (5) to locking lever (5) and slip table (4) top inboard screw-thread fit, slip table (4) right-hand member fixed mounting has conducting block (6), platform (1) with prevent scurrying axle (7) bottom bolted connection to prevent scurrying axle (7) rear end and fixed roller frame (8) fixed connection, platform (1) is fixed with fixed roller frame (8) bottom through the electric welding, both ends are rotated and are connected around fixed roller frame (8) and roller drive shaft (9), both ends are provided with gyro wheel (10) relatively around fixed roller frame (8) top, interval adjustment handle (12) and fixed roller frame (8) front end output shaft normal running fit, locking handle (13) closely fixes through the electric welding mode of electric welding and platform (1) top right front end, platform (1) right-hand member is provided with square steel track (17), the square steel track (17) is locked and fixed with the bottom of the guide rail (16) through screws, and the guide rail (16) is in sliding fit with the bottom of the movable roller frame (14).
3. The special chain device for the welding device for circumferential butt joint of the steel pipe and the necked flange according to claim 1, is characterized in that: the chain body (114) comprises a first chain piece (1141), a second chain piece (1142), a chain wheel (1143) and a chain shaft (1144), wherein the first chain piece (1141) is in running fit with the left front end of the second chain piece (1142) through a hinge shaft, and the chain shaft (1144) is connected with the chain wheel (1143).
4. The special chain device for the welding device for circumferential butt joint of the steel pipe and the necked flange according to claim 2, is characterized in that: locking handle (13) bottom is provided with screw rod (131) to locking handle (13) and screw rod (131) top are fixed as an organic whole through the electric welding, screw rod (131) bottom is provided with fixed plate (132), and screw rod (131) and the inboard screw-thread fit in fixed plate (132) top, platform (1) is fixed mutually through the electric welding with fixed plate (132) bottom.
5. The special chain device for the welding device for circumferential butt joint of the steel pipe and the necked flange according to claim 1, is characterized in that: the top of the fixed seat (113) is provided with two limiting lugs (1131), and the number of the limiting lugs (1131) is two.
6. The special chain device for the welding device for circumferential butt joint of the steel pipe and the necked flange according to claim 1, is characterized in that: the inclination angle of the fixed seat (113) is sixty degrees, and the fixed seat (113) is cuboid.
7. The special chain device for the welding device for circumferential butt joint of the steel pipe and the necked flange according to claim 1, is characterized in that: the chain body (114) is formed by mutually overlapping and connecting a first chain piece (1141) and a second chain piece (1142), and a chain wheel (1143) and a chain shaft (1144) are arranged at the joint of the first chain piece (1141) and the second chain piece (1142).
8. The special chain device for the welding device for circumferential butt joint of the steel pipe and the necked flange according to claim 1, is characterized in that: the number of the rollers (10) is four, and the rollers (10) form a group in pairs and are respectively positioned at the front end and the rear end of the top of the fixed roller frame (8) and the front end and the rear end of the top of the movable roller frame (14).
9. The special chain device for the welding device for circumferential butt joint of the steel pipe and the necked flange according to claim 1, is characterized in that: the chain fixing frame is characterized in that chain placing grooves are formed in the right end of the top of the chain fixing frame (18), and the diameter of the chain body (114) is five millimeters smaller than that of the chain placing grooves in the right end of the top of the chain fixing frame (18).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911253414.4A CN111299951A (en) | 2019-12-09 | 2019-12-09 | Special chain device for welding device for circumferential butt joint of steel pipe and neck flange |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911253414.4A CN111299951A (en) | 2019-12-09 | 2019-12-09 | Special chain device for welding device for circumferential butt joint of steel pipe and neck flange |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111299951A true CN111299951A (en) | 2020-06-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911253414.4A Pending CN111299951A (en) | 2019-12-09 | 2019-12-09 | Special chain device for welding device for circumferential butt joint of steel pipe and neck flange |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111299951A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2004065057A2 (en) * | 2003-01-20 | 2004-08-05 | Daniele Comba | Rotary chain vice |
| CN201026556Y (en) * | 2007-03-15 | 2008-02-27 | 上海前山管道技术有限公司 | Light-type automatic welding machine for pipeline |
| CN203526874U (en) * | 2013-11-01 | 2014-04-09 | 南京奥特电气股份有限公司 | Heavy pipe beam holding device |
| CN104959767A (en) * | 2015-05-27 | 2015-10-07 | 南京英尼格玛工业自动化技术有限公司 | Welding device suitable for multilayer multi-pass welding of petroleum pipeline inner wall |
| CN109262192A (en) * | 2018-09-27 | 2019-01-25 | 宁夏天地奔牛实业集团有限公司 | A kind of portable adjustable welding shaft part positioning tool |
| CN208662959U (en) * | 2018-08-01 | 2019-03-29 | 钱友静 | Tube body adjuster for the welding of assistant metal pipeline |
| CN209006969U (en) * | 2018-09-26 | 2019-06-21 | 昆山华恒焊接股份有限公司 | Plummer |
-
2019
- 2019-12-09 CN CN201911253414.4A patent/CN111299951A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004065057A2 (en) * | 2003-01-20 | 2004-08-05 | Daniele Comba | Rotary chain vice |
| CN201026556Y (en) * | 2007-03-15 | 2008-02-27 | 上海前山管道技术有限公司 | Light-type automatic welding machine for pipeline |
| CN203526874U (en) * | 2013-11-01 | 2014-04-09 | 南京奥特电气股份有限公司 | Heavy pipe beam holding device |
| CN104959767A (en) * | 2015-05-27 | 2015-10-07 | 南京英尼格玛工业自动化技术有限公司 | Welding device suitable for multilayer multi-pass welding of petroleum pipeline inner wall |
| CN208662959U (en) * | 2018-08-01 | 2019-03-29 | 钱友静 | Tube body adjuster for the welding of assistant metal pipeline |
| CN209006969U (en) * | 2018-09-26 | 2019-06-21 | 昆山华恒焊接股份有限公司 | Plummer |
| CN109262192A (en) * | 2018-09-27 | 2019-01-25 | 宁夏天地奔牛实业集团有限公司 | A kind of portable adjustable welding shaft part positioning tool |
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