CN112372195A - Automatic welding equipment for ship production - Google Patents

Automatic welding equipment for ship production Download PDF

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Publication number
CN112372195A
CN112372195A CN202110059246.6A CN202110059246A CN112372195A CN 112372195 A CN112372195 A CN 112372195A CN 202110059246 A CN202110059246 A CN 202110059246A CN 112372195 A CN112372195 A CN 112372195A
Authority
CN
China
Prior art keywords
supporting
welding
adjusting
frame
bolted
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202110059246.6A
Other languages
Chinese (zh)
Inventor
王普
朱玉娟
王墨
潘岩
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Oceanwide Shandong Intelligent Equipment Co ltd
Original Assignee
Oceanwide Shandong Intelligent Equipment Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Oceanwide Shandong Intelligent Equipment Co ltd filed Critical Oceanwide Shandong Intelligent Equipment Co ltd
Priority to CN202110059246.6A priority Critical patent/CN112372195A/en
Publication of CN112372195A publication Critical patent/CN112372195A/en
Pending legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K37/00Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
    • B23K37/04Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work
    • B23K37/0426Fixtures for other work
    • B23K37/0435Clamps
    • B23K37/0443Jigs
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K37/00Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
    • B23K37/02Carriages for supporting the welding or cutting element
    • B23K37/0211Carriages for supporting the welding or cutting element travelling on a guide member, e.g. rail, track

Abstract

The invention discloses automatic welding equipment for ship production, and relates to the technical field of welding processing equipment. The welding device comprises a support frame set, a central control working frame and a welding adjusting frame, wherein adjusting cylinders are arranged in the support frame set, and the two groups of adjusting cylinders are electrically matched with each other; the surface of the support frame group is bolted with a orbit determination scale. According to the invention, two groups of support frame groups are arranged, two groups of built-in adjusting cylinders are matched with each other to push the central control working frame to reciprocate, and the position of the welding machine can be automatically adjusted along with the station; the supporting slide rods in sliding fit with the supporting columns and the supporting plates are arranged, the sliding of the supporting slide rods is driven by the meshing of the main gear and the toothed bar, so that the supporting structure can be lifted simultaneously, the lifting adjusting process is more stable, and the phenomenon of unstable welding during working is avoided; through setting up flexible fixed rail scale and welding machine joint, can laminate the irregular cambered surface of boats and ships, fixed welded track avoids the welding seam deviation to appear, influences the quality of manufacturing.

Description

Automatic welding equipment for ship production
Technical Field
The invention belongs to the technical field of welding processing equipment, and particularly relates to automatic welding equipment for ship production.
Background
Manmade boats have a long history. Since prehistoric ships were the routes of boats, manmade ships were propelled by manpower or wind over a long period of time, to the first steam-powered ships in the world, to machine-powered steel ships, and to the 20 th century and the 50 th, the ship propulsion devices were gradually replacing steam engines by steam turbines and diesel engines, until now, ship manufacturing has begun to use nuclear energy as propulsion power. Due to the development of shipping and military requirements, ships tend to be large-sized and specialized, shipbuilding technology is rapidly developed, shipbuilding becomes one of the most important major industrial sectors in the world, and China is also a large country in the shipbuilding industry.
In the ship production and manufacture, a sectional construction mode is generally adopted and is divided into three stages of component assembling and welding, sectional assembling and welding and slipway assembling and welding, so that the welding technology is particularly important in the ship manufacture.
Because the ship is not in a regular shape, the ship needs to be attached and welded according to a specific shape structure in the welding process, and particularly different positions and different heights of the cambered surface, so that the traditional welding equipment is difficult to meet the complicated welding structure, is inconvenient to flexibly adjust, and easily causes the problems of welding seam deviation and the like; in view of the above, we have devised an automatic welding apparatus for ship production to solve the above problems.
Disclosure of Invention
The invention aims to provide automatic welding equipment for ship production, which solves the problems of welding seam deviation and welding quality caused by inconvenience in adjusting the welding position of the existing welding equipment in the process of welding the cambered surface of a large ship.
In order to solve the technical problems, the invention is realized by the following technical scheme:
the invention relates to automatic welding equipment for ship production, which comprises a support frame group, a central control working frame and a welding adjusting frame, wherein two opposite side surfaces of the central control working frame are bolted with the support frame group; the lower surface of the central control working frame is provided with a sliding chute;
the support frame group comprises a support bottom plate, a support sliding rod and an adjusting cylinder; the upper surface of the supporting bottom plate is welded with a plurality of supporting columns and a plurality of supporting plates, and the supporting columns and the supporting plates are of U-shaped column structures; the supporting columns and the supporting plates are clamped with the supporting slide bars, the supporting slide bars are in sliding fit with the supporting columns and the supporting plates, the supporting columns and the supporting plates form a tubular structure and are in nested fit with the supporting slide bars, and meanwhile, a supporting effect is provided for the sliding of the supporting slide bars;
the upper surface of the support sliding rod is bolted with an adjusting cylinder, one end surface of the adjusting cylinder is provided with a telescopic air rod, and the telescopic air rods of the two support frame groups are bolted with a central control working frame; the same group of the adjusting cylinders are electrically connected, and the two adjusting cylinders of the support frame groups are electrically matched, namely when one group of the adjusting cylinders control the telescopic air rods to extend, the other group of the telescopic air rods contracts to control the middle control working frame to reciprocate between the two support frame groups.
Furthermore, a lifting motor is installed inside the supporting column, and a main gear is bolted to one end face of an output shaft of the lifting motor and extends to the outside of the supporting column; and a toothed bar is welded on one side surface of the supporting sliding rod and is meshed with the master gear to control the supporting sliding rod to slide up and down.
Furthermore, a plurality of pinions are arranged among the plurality of pinions, and the plurality of pinions work simultaneously through the transmission chains, so that the stability of the support frame group is ensured.
Further, the welding adjusting frame comprises an adjusting block, a connecting rod and a welding machine; a driving motor is installed inside the adjusting block, and pulleys are bolted to two opposite side surfaces of the adjusting block and extend into the sliding groove; the adjusting block is in sliding fit with the sliding groove through a pulley driven by a driving motor.
Furthermore, the lower surface of the adjusting block is bolted with the connecting rod, and a telescopic column is hinged between the connecting rod and the welding machine, so that the welding work height of the welding machine can be conveniently adjusted.
Furthermore, the welding machine is in rotating fit with the connecting rod through the telescopic column, and the welding direction can be adjusted according to the specific working environment; the lower surface of the welding machine is bolted with a fixed rail clamping plate and a welding gun, and the fixed rail clamping plate is of a U-shaped plate structure.
Furthermore, a plurality of orbit determination scales are bolted between the two support bottom plates, are of flexible plate structures and are in rotating fit with the support bottom plates; the fixed rail ruler is matched with the fixed rail clamping plate in a clamping mode, is mainly used for limiting a working track of a butt welding machine and avoiding welding deviation, a fixed rail notch is formed in one surface of the fixed rail ruler, and the fixed rail notch corresponds to the position of a welding gun, so that the welding gun can conveniently stretch out to work.
Furthermore, a microprocessor is arranged inside the central control working frame, the adjusting cylinder, the lifting motor, the driving motor and the welding machine are electrically connected with the microprocessor, and all components inside the central control working frame are controlled by the microprocessor to work in a matched mode.
The invention has the following beneficial effects:
according to the invention, two groups of support frame groups are arranged, and two groups of built-in adjusting cylinders are matched with each other to push the central control working frame to reciprocate, so that the position of the welding machine can be automatically adjusted along with a station; on the other hand, the plurality of supporting slide rods are arranged and are in sliding fit with the supporting columns and the supporting plates, wherein the sliding of the supporting slide rods is driven by the meshing of the main gear and the toothed bar, so that a plurality of groups of supporting structures can be lifted simultaneously, the lifting adjusting process is more stable, and the phenomenon of unstable welding during working is avoided; meanwhile, the flexible rail fixing scale is clamped with the welding machine, so that the irregular cambered surface of the ship can be attached, a welded track is fixed, and the phenomenon that the welding seam deviates and the quality of production and manufacturing is influenced is avoided.
Of course, it is not necessary for any product in which the invention is practiced to achieve all of the above-described advantages at the same time.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic view of the overall structure of an automatic welding apparatus for ship production according to the present invention;
FIG. 2 is a front view of an automatic welding apparatus for ship production according to the present invention;
FIG. 3 is a partial view of portion A of FIG. 2;
FIG. 4 is a schematic structural view of section B-B of FIG. 2;
FIG. 5 is a partial view of portion D of FIG. 4;
FIG. 6 is a schematic structural view of section C-C of FIG. 2;
fig. 7 is a partial view of portion E of fig. 6.
In the drawings, the components represented by the respective reference numerals are listed below:
1. a set of support frames; 2. a central control working frame; 3. welding an adjusting frame; 101. a support base plate; 102. supporting the sliding rod; 103. an adjusting cylinder; 1011. a support pillar; 1012. a support plate; 1031. a telescopic air rod; 1013. a main gear; 1021. a rack bar; 1014. a pinion gear; 1015. a drive chain; 301. an adjusting block; 302. a connecting rod; 303. a welding machine; 3011. a pulley; 304. a telescopic column; 3031. a fixed rail clamping plate; 3032. a welding gun; 1016. a track-fixing scale; 1017. a fixed rail notch; 201. a chute.
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.
In the description of the present invention, it is to be understood that the terms "upper", "middle", "outer", "inner", and the like, indicate orientations or positional relationships, are used for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referenced components or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
Referring to fig. 1-7, the invention is an automatic welding device for ship production, comprising a support frame set 1, a central control working frame 2 and a welding adjusting frame 3, wherein two opposite side surfaces of the central control working frame 2 are bolted with the support frame set 1, the welding adjusting frame 3 is in sliding fit with the central control working frame 2, and the support frame set 1 and the welding adjusting frame 3 are electrically connected with the central control working frame 2; the lower surface of the central control working frame 2 is provided with a chute 201;
the support frame group 1 comprises a support bottom plate 101, a support sliding rod 102 and an adjusting cylinder 103; the upper surface of the supporting base plate 101 is welded with a plurality of supporting columns 1011 and a plurality of supporting plates 1012, and the supporting columns 1011 and the supporting plates 1012 are both of U-shaped column structures; the supporting column 1011 and the supporting plate 1012 are clamped with the supporting slide bar 102, the supporting slide bar 102 is in sliding fit with the supporting column 1011 and the supporting plate 1012, the supporting column 1011 and the supporting plate 1012 form a tubular structure to be in nested fit with the supporting slide bar 102, and meanwhile, a supporting function is provided for the sliding of the supporting slide bar 102;
the upper surface of the support slide bar 102 is bolted with the adjusting cylinder 103, one end surface of the adjusting cylinder 103 is provided with a telescopic air bar 1031, and the telescopic air bars 1031 of the two support frame groups 1 are bolted with the central control working frame 2; the same group of adjusting cylinders 103 are electrically connected, and the adjusting cylinders 103 of the two support frame groups 1 are electrically matched, that is, when one group of adjusting cylinders 103 controls the extension of the telescopic gas rods 1031, the other group of telescopic gas rods 1031 contracts to control the reciprocating motion of the central control working frame 2 between the two support frame groups 1.
Preferably, a lifting motor is installed inside the supporting column 1011, and a main gear 1013 is bolted to one end face of an output shaft of the lifting motor and extends to the outside of the supporting column 1011; a rack 1021 is welded to one side of the support rod 102, and the rack 1021 is engaged with a main gear 1013 for controlling the support rod 102 to slide up and down.
Preferably, a pinion 1014 is welded on one surface of the main gear 1013, and a transmission chain 1015 is installed between the plurality of pinions 1014, and the plurality of pinions 1014 work simultaneously through the transmission chain 1015, so as to ensure the stability of the support frame set 1.
Preferably, the welding adjusting bracket 3 includes an adjusting block 301, a connecting rod 302 and a welder 303; a driving motor is arranged in the adjusting block 301, and pulleys 3011 are bolted on two opposite side surfaces of the adjusting block 301 and extend into the sliding groove 201; the adjusting block 301 is in sliding fit with the sliding chute 201 through a pulley 3011 driven by a driving motor.
Preferably, the lower surface of the adjusting block 301 is bolted with the connecting rod 302, and a telescopic column 304 is hinged between the connecting rod 302 and the welding machine 303, so that the welding work height of the welding machine 303 can be conveniently adjusted.
Preferably, the welding machine 303 is rotationally matched with the connecting rod 302 through the telescopic column 304, so that the welding direction can be adjusted according to a specific working environment; the lower surface of the welding machine 303 is bolted with a fixed rail clamp plate 3031 and a welding gun 3032, and the fixed rail clamp plate 3031 is in a U-shaped plate structure.
Preferably, a plurality of orbit determination scales 1016 are bolted between the two supporting bottom plates 101, and the orbit determination scales 1016 are of flexible plate structures and are in rotating fit with the supporting bottom plates 101; orbit determination scale 1016 clamps the cooperation with orbit determination cardboard 3031, and mainly used prescribes a limit to the work track of welding machine 303, avoids the welding deviation to appear, and orbit determination notch 1017 has been seted up on orbit determination scale 1016 one surface, and orbit determination notch 1017 corresponds with welder 3032's position, and the welder 3032 of being convenient for stretches out work.
Preferably, a microprocessor is arranged inside the central control working frame 2, the adjusting cylinder 103, the lifting motor, the driving motor and the welding machine 303 are all electrically connected with the microprocessor, and all components inside are controlled by the microprocessor to work in a matched mode.
It should be further explained that the microprocessor of the invention is a ST digital display tension controller, and the lifting motor and the driving motor are single-phase asynchronous YN60 motors; in actual work, the microprocessor controls the work flows of the two groups of adjusting cylinders 103 which are opposite to each other, namely when one group of telescopic air rods 1031 contracts, the other group extends, so that the central control working frame 2 can reciprocate and is selectively moved to a welding position, and the welding machine 303 can conveniently start to work.
In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims (8)

1. The utility model provides an automatic weld equipment is used in marine production, includes support frame group (1), well accuse work frame (2) and welding alignment jig (3), its characterized in that: the opposite two side surfaces of the central control working frame (2) are bolted with the support frame group (1), the welding adjusting frame (3) is in sliding fit with the central control working frame (2), and the support frame group (1) and the welding adjusting frame (3) are electrically connected with the central control working frame (2); the lower surface of the central control working frame (2) is provided with a sliding groove (201);
the support frame group (1) comprises a support bottom plate (101), a support sliding rod (102) and an adjusting cylinder (103); the upper surface of the supporting base plate (101) is welded with a plurality of supporting columns (1011) and a plurality of supporting plates (1012), and the supporting columns (1011) and the supporting plates (1012) are both U-shaped column structures; the supporting column (1011) and the supporting plate (1012) are both clamped with the supporting slide rod (102), and the supporting slide rod (102) is in sliding fit with the supporting column (1011) and the supporting plate (1012);
the upper surface of the support sliding rod (102) is bolted with an adjusting cylinder (103), one end surface of the adjusting cylinder (103) is provided with a telescopic air rod (1031), and the telescopic air rods (1031) of the two support frame groups (1) are bolted with a central control working frame (2); the adjusting cylinders (103) in the same group are electrically connected, and the adjusting cylinders (103) of the two support frame groups (1) are electrically matched.
2. The automatic welding equipment for ship production according to claim 1, wherein a lifting motor is installed inside the supporting column (1011), a main gear (1013) is bolted to one end face of an output shaft of the lifting motor, and the main gear extends out of the supporting column (1011); a toothed bar (1021) is welded on one side surface of the supporting sliding bar (102), and the toothed bar (1021) is meshed with the main gear (1013).
3. The automatic welding equipment for ship production according to claim 2, characterized in that a pinion (1014) is welded on one surface of the main gear (1013), and a transmission chain (1015) is installed between a plurality of the pinion (1014).
4. The automatic welding equipment for marine production according to claim 3, characterized in that said welding adjusting frame (3) comprises an adjusting block (301), a connecting rod (302) and a welder (303); a driving motor is installed inside the adjusting block (301), and pulleys (3011) are bolted to two opposite side faces of the adjusting block (301) and extend into the sliding groove (201); the adjusting block (301) is in sliding fit with the sliding groove (201) through a pulley (3011) driven by a driving motor.
5. The automatic welding equipment for ship production according to claim 4, characterized in that the lower surface of the adjusting block (301) is bolted with a connecting rod (302), and a telescopic column (304) is hinged between the connecting rod (302) and the welding machine (303).
6. The automatic welding equipment for ship production according to claim 5, wherein the welding machine (303) is in rotating fit with the connecting rod (302) through a telescopic column (304); the lower surface of the welding machine (303) is bolted with a fixed rail clamping plate (3031) and a welding gun (3032), and the fixed rail clamping plate (3031) is of a U-shaped plate structure.
7. The automatic welding equipment for ship production according to claim 6, wherein a plurality of orbit determination scales (1016) are bolted between the two supporting bottom plates (101), and the orbit determination scales (1016) are of flexible plate structures and are in rotating fit with the supporting bottom plates (101); the rail fixing ruler (1016) is matched with a rail fixing clamping plate (3031) in a clamping mode, a rail fixing notch (1017) is formed in one surface of the rail fixing ruler (1016), and the rail fixing notch (1017) corresponds to the position of the welding gun (3032).
8. The automatic welding equipment for ship production according to claim 7, wherein a microprocessor is arranged inside the central control working frame (2), and the adjusting cylinder (103), the lifting motor, the driving motor and the welding machine (303) are all electrically connected with the microprocessor.
CN202110059246.6A 2021-01-18 2021-01-18 Automatic welding equipment for ship production Pending CN112372195A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110059246.6A CN112372195A (en) 2021-01-18 2021-01-18 Automatic welding equipment for ship production

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110059246.6A CN112372195A (en) 2021-01-18 2021-01-18 Automatic welding equipment for ship production

Publications (1)

Publication Number Publication Date
CN112372195A true CN112372195A (en) 2021-02-19

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ID=74581952

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202110059246.6A Pending CN112372195A (en) 2021-01-18 2021-01-18 Automatic welding equipment for ship production

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Country Link
CN (1) CN112372195A (en)

Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1487376A (en) * 1973-09-14 1977-09-28 Mitsui Shipbuilding Eng Jig for use in welding a pair of longitudinal members of a hull to each other
JPH06344185A (en) * 1993-06-11 1994-12-20 Nippon Steel Weld Prod & Eng Co Ltd Positioning device for bar stock
CN2880350Y (en) * 2006-03-15 2007-03-21 上海外高桥造船有限公司 Automatic welding device
KR20100096294A (en) * 2009-02-24 2010-09-02 현대삼호중공업 주식회사 Magnet setting device for fixing a angle mamber
CN102009300A (en) * 2009-09-04 2011-04-13 南通恒帅机电设备有限公司 Novel car used in carbon-dioxide gas shielded welding
CN202147101U (en) * 2011-07-16 2012-02-22 浙江海洋学院 Automatic welding device for ship piping system
CN202156471U (en) * 2011-07-08 2012-03-07 上海电机学院 Sucked type pneumatic wall-climbing robot
CN104443102A (en) * 2014-11-25 2015-03-25 广西大学 Simple robot achieving special surface movement
CN104439803A (en) * 2014-11-14 2015-03-25 柳州市安龙机械设备有限公司 Bent plate welding machine
CN108296686A (en) * 2018-02-17 2018-07-20 李大德 Shipbuilding Intelligent welding equipment walking robot
CN108381062A (en) * 2018-01-16 2018-08-10 威海职业学院 A kind of device during shipbuilding for welding screw rod group
CN208496151U (en) * 2018-06-11 2019-02-15 纽科伦(新乡)起重机有限公司 A kind of arc plate circumferential direction welding jig

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1487376A (en) * 1973-09-14 1977-09-28 Mitsui Shipbuilding Eng Jig for use in welding a pair of longitudinal members of a hull to each other
JPH06344185A (en) * 1993-06-11 1994-12-20 Nippon Steel Weld Prod & Eng Co Ltd Positioning device for bar stock
CN2880350Y (en) * 2006-03-15 2007-03-21 上海外高桥造船有限公司 Automatic welding device
KR20100096294A (en) * 2009-02-24 2010-09-02 현대삼호중공업 주식회사 Magnet setting device for fixing a angle mamber
CN102009300A (en) * 2009-09-04 2011-04-13 南通恒帅机电设备有限公司 Novel car used in carbon-dioxide gas shielded welding
CN202156471U (en) * 2011-07-08 2012-03-07 上海电机学院 Sucked type pneumatic wall-climbing robot
CN202147101U (en) * 2011-07-16 2012-02-22 浙江海洋学院 Automatic welding device for ship piping system
CN104439803A (en) * 2014-11-14 2015-03-25 柳州市安龙机械设备有限公司 Bent plate welding machine
CN104443102A (en) * 2014-11-25 2015-03-25 广西大学 Simple robot achieving special surface movement
CN108381062A (en) * 2018-01-16 2018-08-10 威海职业学院 A kind of device during shipbuilding for welding screw rod group
CN108296686A (en) * 2018-02-17 2018-07-20 李大德 Shipbuilding Intelligent welding equipment walking robot
CN208496151U (en) * 2018-06-11 2019-02-15 纽科伦(新乡)起重机有限公司 A kind of arc plate circumferential direction welding jig

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