CN105583569A - Cylinder welding centering tool - Google Patents

Cylinder welding centering tool Download PDF

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Publication number
CN105583569A
CN105583569A CN201610085712.7A CN201610085712A CN105583569A CN 105583569 A CN105583569 A CN 105583569A CN 201610085712 A CN201610085712 A CN 201610085712A CN 105583569 A CN105583569 A CN 105583569A
Authority
CN
China
Prior art keywords
cylindrical shell
mounting bracket
end cylinder
cylinder
supporter
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
CN201610085712.7A
Other languages
Chinese (zh)
Inventor
孟祥喜
胡延伟
张全民
张君宇
张明
胡永辉
曹连中
胡中辉
王赏
何文飞
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.)
State Grid Corp of China SGCC
Pinggao Group Co Ltd
Henan Pinggao Electric Co Ltd
Original Assignee
State Grid Corp of China SGCC
Pinggao Group Co Ltd
Henan Pinggao Electric 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 State Grid Corp of China SGCC, Pinggao Group Co Ltd, Henan Pinggao Electric Co Ltd filed Critical State Grid Corp of China SGCC
Priority to CN201610085712.7A priority Critical patent/CN105583569A/en
Publication of CN105583569A publication Critical patent/CN105583569A/en
Pending legal-status Critical Current

Links

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
    • B23K37/053Auxiliary 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
    • 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
    • B23K2101/00Articles made by soldering, welding or cutting
    • B23K2101/36Electric or electronic devices

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  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Electric Connection Of Electric Components To Printed Circuits (AREA)

Abstract

The invention relates to a cylinder welding centering tool. The cylinder welding centering tool comprises a base, and is characterized in that the base is provided with an end cylinder mounting bracket and a middle cylinder mounting bracket for respectively mounting an end cylinder and a middle cylinder and guaranteeing the axis of the end cylinder and the axis of the middle cylinder to be positioned on the same vertical plane; and the end cylinder mounting bracket and the middle cylinder mounting bracket are horizontally arranged left and right. The cylinder welding centering tool further comprises a gap adjusting mechanism for adjusting a horizontal gap between the end cylinder mounting bracket and the middle cylinder mounting bracket. The cylinder welding centering tool firstly guarantees the axis of the end cylinder and the axis of the middle cylinder to be located on the same vertical plane, uses the gap adjusting mechanism for forming a proper riveting gap between the end cylinder and the middle cylinder during welding, and solves the problems of lower centering precision and lower efficiency caused by centering of the end cylinder and the middle cylinder through a traditional lineation mode.

Description

A kind of barrel soldering centering tooling
Technical field
Centering tooling when the present invention relates to high voltage electric appliance pressure vessel and welding, particularly a kind of barrel soldering centering tooling.
Background technology
The Welded cylindrical shell of using in high-tension switch gear, length is not from 2 meters to 18 meters etc., in the time that reality is used, the inner conducting rod of installing, and fill high-purity SF6 gas for dielectric to ensure the insulating properties of cylindrical shell, conventionally adopt aluminum alloy plate materials to roll, be welded into after cylindrical shell again at the two ends of cylindrical shell welding aluminum alloy flange, or adopt aluminum alloy spiral pipe and aluminium alloy flange to weld. prior welding mode is that middle cylindrical shell to be welded and end cylinder are placed on jig, rely on the contact-making surface of each cylindrical shell and jig in same level, to carry out centering, can operate for cylindrical shell in the middle of isodiametric and end cylinder, but welding efficiency is low. and while being reducing cylindrical shell for end cylinder, or in end cylinder, be provided with while propping up cylindrical shell, adopt traditional approach to weld that to realize difficulty larger, welding efficiency is lower, the end cylinder of reducing is difficult for fixing, and need to be by consistent the padded middle cylindrical shell less mid diameter end cylinder center line height to the center line reducing larger with two ends diameter, when particularly, cylindrical shell two ends all need to weld end cylinder, if in the situation that the flange hole in the end cylinder at two ends has been processed, need to by line ensure two ends flange hole to wearing, but for long cylindrical shell, particularly 7 meters of above cylindrical shells, line be still difficult to ensure after welding flange hole corresponding on two ends end cylinder end faces to wearing property.
Summary of the invention
For solving the problems of the technologies described above, the object of the present invention is to provide a kind of solved under traditional approach to rely on line to carry out end cylinder and middle cylindrical shell centering to cause the barrel soldering centering tooling of the lower problem of accuracy of alignment.
The present invention adopts following technical scheme: a kind of barrel soldering centering tooling, comprise base, on base, be provided with for supplying respectively end cylinder and middle cylindrical shell axis that install and that ensure end cylinder and the axis of middle cylindrical shell to be positioned at end cylinder mounting bracket and the middle cylindrical shell mounting bracket on same perpendicular, end cylinder mounting bracket and middle cylindrical shell mounting bracket left and right arrange, and barrel soldering centering tooling also comprises the distance regulating mechanism of spacing between adjustment end cylindrical shell mounting bracket and middle cylindrical shell mounting bracket.
On described base, be provided with along the linearly extended locating slot of left and right directions, end cylinder mounting bracket and middle cylindrical shell mounting bracket are all installed in locating slot.
Described end cylinder mounting bracket comprises the positioning seat that is fixedly connected with locating slot and the hard-wired installing plate of end face for end cylinder, and distance regulating mechanism comprises positioning seat guide rail that the guiding that is arranged on positioning seat extends along left and right directions, be arranged at the gathering sill coordinating with positioning seat guide rail guiding movement on installing plate and the end driving device of drive installation plate side-to-side movement.
Described end driving device comprise be fixedly arranged on positioning seat can left and right guiding movement end screw mandrel, one end of end screw mandrel is provided with rocking handle, the other end of end screw mandrel is threaded with installing plate.
Described installing plate comprise the riser part of installing for the end face of end cylinder and for the positioning seat guide rail transverse slat part being slidably matched that leads, in described riser part, be provided with the fixing hole for being fixedly connected with the flange hole in end cylinder.
Described barrel soldering centering tooling also comprise be arranged on jig perpendicular to riser part and for the auxiliary stand of the cylindrical shell on supporting base end portion cylindrical shell.
Described locating slot is T-slot, and the two ends, left and right of positioning seat are provided with the groove for being fixedly connected with T-slot.
In the middle of described, cylindrical shell mounting bracket comprises the underframe being installed in locating slot, on underframe, be provided with the underframe guide rail that guiding is extended along fore-and-aft direction, on underframe guide rail, be equipped with the first supporter and the second supporter with respect to symmetry and guiding movement before and after the axis of middle cylindrical shell, on first, second supporter, be separately installed with the first roller and the second roller for contacting with the outer tube wall of middle cylindrical shell, described middle cylindrical shell mounting bracket also comprises for driving the first supporter and the second supporter relative motion intermediate drive device with lifting or the middle cylindrical shell that declines.
Described intermediate drive device is the handle that is fixedly arranged on the middle leading screw on underframe and is arranged at one end of middle leading screw, and in the middle of the first supporter and the second supporter are threadedly connected to, on leading screw, the thread rotary orientation of the first supporter and the second supporter is contrary.
Described positioning seat equates with underframe size on fore-and-aft direction, is provided with for calibrating about end cylinder mounting bracket and middle cylindrical shell mounting bracket aligns to ensure that the axis of end cylinder and the axis of middle cylindrical shell are positioned at the bottom laser calibrating equipment of same perpendicular in the both sides, front and back of positioning seat.
Beneficial effect of the present invention is: a kind of barrel soldering centering tooling, comprise end cylinder mounting bracket and the middle cylindrical shell mounting bracket for end cylinder and the installation of middle cylindrical shell respectively, end cylinder mounting bracket and middle cylindrical shell mounting bracket have ensured that the axis of end cylinder and the axis of middle cylindrical shell are positioned on same perpendicular, on end cylinder mounting bracket, be provided with the distance regulating mechanism for spacing between adjustment end cylindrical shell mounting bracket and middle cylindrical shell mounting bracket, while making to weld, between end cylinder and middle cylindrical shell, there is a suitable welding distance, solve under traditional approach and to have relied on line to carry out end cylinder and middle cylindrical shell centering to cause the problem that accuracy of alignment is lower.
Further, end cylinder mounting bracket and middle cylindrical shell mounting bracket are all installed in locating slot, and arranging of locating slot can ensure that the axis of end cylinder and the axis of middle cylindrical shell are positioned on same perpendicular, have saved scratching process more quickly and easily.
Brief description of the drawings
Fig. 1 is the structural representation of an embodiment of a kind of barrel soldering centering tooling of the present invention;
Fig. 2 is the structural representation of cylindrical shell;
Fig. 3 is the structural representation of middle cylindrical shell mounting bracket.
Detailed description of the invention
A kind of cylindrical shell, as shown in Figure 2, comprises two end cylinder 1 that are connected to be welded and the middle cylindrical shell 2 between two end cylinder 1. a kind of barrel soldering centering tooling, as shown in Figure 1, comprise base, in the present embodiment, base is jig 10, on jig 10, be provided with respectively for end cylinder 1 and middle cylindrical shell 2 that install and ensure that the axis of end cylinder 1 and the axis of middle cylindrical shell 2 are positioned at end cylinder mounting bracket and the middle cylindrical shell mounting bracket on same perpendicular, the present embodiment medial end portions cylindrical shell mounting bracket comprises between left and right every the first end cylindrical shell mounting bracket being oppositely arranged and the second end cylindrical shell mounting bracket, first end cylindrical shell mounting bracket and the second end cylindrical shell mounting bracket are measure-alike, be elaborated as an example of first end cylindrical shell mounting bracket example, on jig 10, be provided with along the linearly extended locating slot of left and right directions, in the present embodiment, locating slot is T-slot 15, first end cylindrical shell mounting bracket comprises the positioning seat 4 being arranged on jig 10, the two ends, left and right of positioning seat 4 be provided with for the fixing groove of T-slot 15 bolt-lockings, on positioning seat 4, be provided with the distance regulating mechanism for spacing between left and right horizontal adjustment end cylindrical shell mounting bracket and middle cylindrical shell mounting bracket, distance regulating mechanism comprises the positioning seat guide rail that the guiding that is arranged on positioning seat 4 is extended along left and right directions, installing plate comprises the riser part 5 of installing for the end face of end cylinder 1 and the transverse slat part 6 coordinating with positioning seat guide rail guiding movement, between riser part 5 and transverse slat part 6, be provided with and strengthen gusset 7, transverse slat part 6 belows are provided with and the positioning seat guide rail gathering sill being slidably matched that leads, distance regulating mechanism also comprises the end driving device of drive installation plate side-to-side movement, end driving device comprises the end screw mandrel 8 moving left and right that the axis that is fixedly arranged on positioning seat 4 extends along left and right directions, transverse slat part 6 belows are provided with the contiguous block coordinating with the 8 bolt transmissions of end screw mandrel, the left end of end screw mandrel 8 is provided with rocking handle 12, drive installing plate side-to-side movement together with end cylinder 1 by rocking handle 12 drive end screw mandrels 8. on installing plate, be provided with the fixing hole corresponding with the flange hole difference of end cylinder 1 end face. the top of the installing plate of first end cylindrical shell mounting bracket is provided with top laser calibrating equipment 11, for the end cylinder 1 coaxial line installation that aligns to ensure two ends of first, second end cylinder mounting bracket.
Barrel soldering centering tooling also comprises the auxiliary stand 9 for the cylindrical shell 3 on supporting base end portion cylindrical shell 1 being arranged on jig 10, auxiliary stand 9 tops are provided with pallet 14 and support and coordinate for the flange of cylindrical shell 3 below, the one, make the easy for installation of end cylinder 1 and installing plate, the 2nd, end cylinder 1 is supported, prevent that end cylinder 1 weight is excessive and cause installing plate distortion or fracture.
Middle cylindrical shell mounting bracket comprises the underframe 2 being arranged on jig 10, underframe 21 is fixed with T-slot 15 bolt-lockings on jig 10, on underframe 21, be provided with the underframe guide rail 16 that guiding is extended along fore-and-aft direction, on underframe guide rail 16, guiding movement is equipped with the first supporter 18 and second supporter 17 of the cylindrical shell 2 for lifting or in the middle of declining, the first supporter 18 and the second supporter 17 upper ends are respectively arranged with the first roller 20 and the second roller 19 that contact with the outer tube wall of middle cylindrical shell 2, on the first supporter 18 and the second supporter 17, be respectively arranged with the screwed hole that rotation direction is contrary, first, the second supporter is threaded axis along on the middle leading screw 22 of fore-and-aft direction extension by screwed hole, the end of middle leading screw 22 is provided with handle 23, in the middle of driving by handle 23, leading screw 22 is to drive the first supporter 18 and the second supporter 17 move toward one another to make middle cylindrical shell 2 raise or reduce.
Because the width of groove is greater than the groove width of T-slot 15, the location inaccuracy of positioning seat 4 on jig, positioning seat 4 and underframe 2 size on fore-and-aft direction equates, both sides, front and back at positioning seat 4 are provided with bottom laser calibrating equipment, for guaranteeing that each positioning seat of first, second end cylinder mounting bracket and the underframe 21 of middle cylindrical shell mounting bracket align, to ensure that the axis of end cylinder 1 and the axis of middle cylindrical shell 2 are positioned on same perpendicular.
The work of a kind of barrel soldering centering tooling of the present invention is crossed and is called: by the first mounting bracket and the second mounting bracket between left and right every by positioning seat by bolt-locking in the T-slot 15 on jig 10, and ensure that the two has suitable distance, two end cylinder 1 are installed on respectively on the installing plate of first end cylindrical shell mounting bracket and the second end cylindrical shell mounting bracket, make to be installed on first by laser calibrating equipment 11, end cylinder 1 on the second mounting bracket is coaxially installed, by middle cylindrical shell mounting bracket by underframe 21 by bolt-locking in the T-slot 15 on jig, middle cylindrical shell 2 is winched on middle cylindrical shell mounting bracket, swing handle 23 is adjusted the height of middle cylindrical shell 2, cylindrical shell 2 and end cylinder 1 coaxial line in the middle of making, regulate first, distance regulating mechanism on the second end cylindrical shell mounting bracket, while making to weld, between end cylinder 1 and middle cylindrical shell 2, there is suitable gap, be convenient to weld.
In other embodiments of the invention, in the time that end cylinder mounting bracket only has one, distance regulating mechanism also can be arranged on the underframe of middle cylindrical shell mounting bracket; Locating slot can be set, and directly end cylinder mounting bracket and middle cylindrical shell mounting bracket bolt be fixed on jig; End cylinder mounting bracket also can only have one; The drive unit of distance regulating mechanism also can adopt hydraulic cylinder or pneumatic cylinder transmission; The two ends, left and right of positioning seat also can not arrange groove, and the screwed hole being fixedly connected with jig is set on positioning seat; Auxiliary stand can be set; Ensureing under centering situation, top, bottom laser calibrating equipment also can not to be set.

Claims (10)

1. a barrel soldering centering tooling, comprise base, it is characterized in that: on base, be provided with for supplying respectively end cylinder and middle cylindrical shell axis that install and that ensure end cylinder and the axis of middle cylindrical shell to be positioned at end cylinder mounting bracket and the middle cylindrical shell mounting bracket on same perpendicular, end cylinder mounting bracket and middle cylindrical shell mounting bracket left and right arrange, and barrel soldering centering tooling also comprises the distance regulating mechanism of spacing between adjustment end cylindrical shell mounting bracket and middle cylindrical shell mounting bracket.
2. a kind of barrel soldering centering tooling according to claim 1, is characterized in that: on described base, be provided with along the linearly extended locating slot of left and right directions, end cylinder mounting bracket and middle cylindrical shell mounting bracket are all installed in locating slot.
3. a kind of barrel soldering centering tooling according to claim 2, it is characterized in that: described end cylinder mounting bracket comprises the positioning seat that is fixedly connected with locating slot and the hard-wired installing plate of end face for end cylinder, distance regulating mechanism comprises positioning seat guide rail that the guiding that is arranged on positioning seat extends along left and right directions, be arranged at the gathering sill coordinating with positioning seat guide rail guiding movement on installing plate and the end driving device of drive installation plate side-to-side movement.
4. a kind of barrel soldering centering tooling according to claim 3, it is characterized in that: described end driving device comprise be fixedly arranged on positioning seat can left and right guiding movement end screw mandrel, one end of end screw mandrel is provided with rocking handle, and the other end of end screw mandrel is threaded with installing plate.
5. according to a kind of barrel soldering centering tooling described in claim 3 or 4, it is characterized in that: described installing plate comprise the riser part of installing for the end face of end cylinder and for the positioning seat guide rail transverse slat part being slidably matched that leads, in described riser part, be provided with the fixing hole for being fixedly connected with the flange hole in end cylinder.
6. a kind of barrel soldering centering tooling according to claim 5, is characterized in that: described barrel soldering centering tooling also comprise be arranged on jig perpendicular to riser part and for the auxiliary stand of the cylindrical shell on supporting base end portion cylindrical shell.
7. a kind of barrel soldering centering tooling according to claim 2, is characterized in that: described locating slot is T-slot, the two ends, left and right of positioning seat are provided with the groove for being fixedly connected with T-slot.
8. a kind of barrel soldering centering tooling according to claim 3, it is characterized in that: in the middle of described, cylindrical shell mounting bracket comprises the underframe being installed in locating slot, on underframe, be provided with the underframe guide rail that guiding is extended along fore-and-aft direction, on underframe guide rail, be equipped with the first supporter and the second supporter with respect to symmetry and guiding movement before and after the axis of middle cylindrical shell, first, on the second supporter, be separately installed with the first roller and the second roller for contacting with the outer tube wall of middle cylindrical shell, in the middle of described, cylindrical shell mounting bracket also comprises for driving the first supporter and the second supporter relative motion intermediate drive device with lifting or the middle cylindrical shell that declines.
9. a kind of barrel soldering centering tooling according to claim 8, it is characterized in that: described intermediate drive device is the handle that is fixedly arranged on the middle leading screw on underframe and is arranged at one end of middle leading screw, in the middle of the first supporter and the second supporter are threadedly connected to, on leading screw, the thread rotary orientation of the first supporter and the second supporter is contrary.
10. a kind of barrel soldering centering tooling according to claim 8 or claim 9, it is characterized in that: described positioning seat equates with underframe size on fore-and-aft direction, is provided with for calibrating about end cylinder mounting bracket and middle cylindrical shell mounting bracket aligns to ensure that the axis of end cylinder and the axis of middle cylindrical shell are positioned at the bottom laser calibrating equipment of same perpendicular in the both sides, front and back of positioning seat.
CN201610085712.7A 2016-02-15 2016-02-15 Cylinder welding centering tool Pending CN105583569A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201610085712.7A CN105583569A (en) 2016-02-15 2016-02-15 Cylinder welding centering tool

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201610085712.7A CN105583569A (en) 2016-02-15 2016-02-15 Cylinder welding centering tool

Publications (1)

Publication Number Publication Date
CN105583569A true CN105583569A (en) 2016-05-18

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201610085712.7A Pending CN105583569A (en) 2016-02-15 2016-02-15 Cylinder welding centering tool

Country Status (1)

Country Link
CN (1) CN105583569A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106044280A (en) * 2016-05-27 2016-10-26 苏州铭冠软件科技有限公司 Intelligent transportation robot
CN106271328A (en) * 2016-09-30 2017-01-04 山东省计算中心(国家超级计算济南中心) One can tracking mode power tower sealing of tube equipment
CN106514097A (en) * 2016-12-13 2017-03-22 苏州天沃科技股份有限公司 Welding tool capable of preventing workpiece from deforming
CN110142450A (en) * 2019-04-25 2019-08-20 何伟宏 A kind of long-distance transport pipes connect head counterpart method
CN110899525A (en) * 2019-09-26 2020-03-24 平高集团有限公司 Reducing cylinder machining device and machining method thereof
CN111215825A (en) * 2020-03-13 2020-06-02 中国水利水电夹江水工机械有限公司 Automatic adjustment control method for butt welding centering of barrel
CN114799263A (en) * 2022-03-31 2022-07-29 武汉船用机械有限责任公司 Shaft tube inner hole repairing device and method

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS617095A (en) * 1984-06-21 1986-01-13 Hitachi Zosen Corp Turning slide device for cylindrical weldment
KR100715423B1 (en) * 2006-02-21 2007-05-09 (주)대영하이텍 Steel pipe welding device
CN201098778Y (en) * 2007-11-15 2008-08-13 泰安科诺型钢股份有限公司 Universal aperture angle adjusting guiding device
CN201342570Y (en) * 2009-02-12 2009-11-11 铜陵皖江集团新高机电有限公司 Adjustable roller frame
CN201728603U (en) * 2010-05-25 2011-02-02 长沙中联重工科技发展股份有限公司 Spiral type split automatic centering device
CN202668002U (en) * 2012-05-14 2013-01-16 平高集团有限公司 Barrel body alignment welding device
CN205520285U (en) * 2016-02-15 2016-08-31 河南平高电气股份有限公司 Barrel welding centering frock

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS617095A (en) * 1984-06-21 1986-01-13 Hitachi Zosen Corp Turning slide device for cylindrical weldment
KR100715423B1 (en) * 2006-02-21 2007-05-09 (주)대영하이텍 Steel pipe welding device
CN201098778Y (en) * 2007-11-15 2008-08-13 泰安科诺型钢股份有限公司 Universal aperture angle adjusting guiding device
CN201342570Y (en) * 2009-02-12 2009-11-11 铜陵皖江集团新高机电有限公司 Adjustable roller frame
CN201728603U (en) * 2010-05-25 2011-02-02 长沙中联重工科技发展股份有限公司 Spiral type split automatic centering device
CN202668002U (en) * 2012-05-14 2013-01-16 平高集团有限公司 Barrel body alignment welding device
CN205520285U (en) * 2016-02-15 2016-08-31 河南平高电气股份有限公司 Barrel welding centering frock

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106044280A (en) * 2016-05-27 2016-10-26 苏州铭冠软件科技有限公司 Intelligent transportation robot
CN106271328A (en) * 2016-09-30 2017-01-04 山东省计算中心(国家超级计算济南中心) One can tracking mode power tower sealing of tube equipment
CN106514097A (en) * 2016-12-13 2017-03-22 苏州天沃科技股份有限公司 Welding tool capable of preventing workpiece from deforming
CN110142450A (en) * 2019-04-25 2019-08-20 何伟宏 A kind of long-distance transport pipes connect head counterpart method
CN110142450B (en) * 2019-04-25 2020-04-28 何伟宏 Connecting and port aligning method for long-distance pipeline
CN110899525A (en) * 2019-09-26 2020-03-24 平高集团有限公司 Reducing cylinder machining device and machining method thereof
CN111215825A (en) * 2020-03-13 2020-06-02 中国水利水电夹江水工机械有限公司 Automatic adjustment control method for butt welding centering of barrel
CN114799263A (en) * 2022-03-31 2022-07-29 武汉船用机械有限责任公司 Shaft tube inner hole repairing device and method
CN114799263B (en) * 2022-03-31 2024-04-09 武汉船用机械有限责任公司 Device and method for repairing inner hole of shaft tube

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Application publication date: 20160518

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