CN104889662A - Rolling type welding position shifting device and rolling type side beam welding position shifting device - Google Patents
Rolling type welding position shifting device and rolling type side beam welding position shifting device Download PDFInfo
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- CN104889662A CN104889662A CN201510325282.7A CN201510325282A CN104889662A CN 104889662 A CN104889662 A CN 104889662A CN 201510325282 A CN201510325282 A CN 201510325282A CN 104889662 A CN104889662 A CN 104889662A
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- 238000003466 welding Methods 0.000 title claims abstract description 50
- 238000005096 rolling process Methods 0.000 title claims abstract description 11
- 230000005540 biological transmission Effects 0.000 claims abstract description 27
- 238000006073 displacement reaction Methods 0.000 claims description 24
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 13
- 239000011148 porous material Substances 0.000 claims description 11
- 210000005069 ears Anatomy 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 230000002146 bilateral effect Effects 0.000 abstract 1
- 241000271559 Dromaiidae Species 0.000 description 2
- 101100346171 Arabidopsis thaliana MORC3 gene Proteins 0.000 description 1
- 101100168604 Candida albicans (strain SC5314 / ATCC MYA-2876) CRH12 gene Proteins 0.000 description 1
- 101100168607 Saccharomyces cerevisiae (strain ATCC 204508 / S288c) UTR2 gene Proteins 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 238000007142 ring opening reaction Methods 0.000 description 1
Classifications
-
- 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 for a procedure covered by only one of the other main groups of this subclass
- B23K37/04—Auxiliary devices or processes, not specially adapted for a procedure covered by only one of the other main groups of this subclass for holding or positioning work
- B23K37/047—Auxiliary devices or processes, not specially adapted for a procedure covered by only one of the other main groups of this subclass for holding or positioning work moving work to adjust its position between soldering, welding or cutting steps
-
- 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 for a procedure covered by only one of the other main groups of this subclass
- B23K37/04—Auxiliary devices or processes, not specially adapted for a procedure covered by only one of the other main groups of this subclass for holding or positioning work
- B23K37/0426—Fixtures for other work
- B23K37/0435—Clamps
-
- 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
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/28—Beams
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- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
Abstract
The invention provides a rolling type welding position shifting device and a rolling type side beam welding position shifting device, wherein a workpiece is put into a fixture by means of partially arranging openings in a gear ring and a rolling drum; the opening of the gear ring is closed by inserting a fastening pin therein; the rolling drum is provided with a workpiece hole for the workpiece to pass through; an electric motor drives a drive wheel for driving the rolling drum to rotate; bilateral sides of both the rolling drum and the gear ring are provided with supporting wheels; the inner side of the gear ring is further provided with an anti-inversion limiting device for preventing an axial transmission; after being clamped, a side beam can be adjusted to a downward welding position PA and an angle welding position PB for being welded, thereby solving the problems of turning over and shifting position during welding box beams such as the side beam; after the side beam is hoisted into the fixture, it can be rotated in 360 degrees by using the fixture, without using a crown block any more, and with the space occupation being small, thereby not only solving the problem that the workshop is insufficient in hoisting capability, but also avoiding the unsafe operation manner of turning over by a conventional crown block, and accordingly increasing the working efficiency, reducing the labor intensity, ensuring the welding quality, and being able to be popularized in the production of all intermediate clamping welding parts.
Description
Technical field
The invention belongs to rail vehicle and weld jig field, be specifically related to a kind of welding displacement adjustment means, be specially adapted to the welding of lateral beam of bogie.
Background technology
The welding at the positions such as current lateral beam of bogie end damper base, spring strut is carried out always on bracing frame, all weld seam welding positions require to be downhand welding PA or fillet welding PB, therefore need constantly to adjust curb girder, thus reach desirable welding position, ensure welding quality, an existing axle welding positioner cannot realize and meet the demand that two ends welding displacement regulates.Present stage curb girder upset adopts overhead traveling crane handling always, every root curb girder needs upset 6 times, each needs 5 minutes, wait for that overhead traveling crane needs about 30 minutes, and each order of classes or grades at school handling upset needs at least 1 hour consuming time, two people are needed to help each other and could overturn, and take natively very nervous overhead traveling crane handling resource, there is potential safety hazard in upset, production efficiency is low, operating type falls behind, and is therefore badly in need of a kind of side beam welding deflection machine not only facilitating upset but also enhance productivity of exploitation and solves this problem.
Patent of invention content
For above one or more problems, the invention provides a kind of roller welding displacement device and roller side beam welding displacement device.Motor effectively drives and is effectively combined with gear-driven principle by the present invention, realize 360 ° of rotatings, simultaneously in order to workpiece is put into fixture inside, design of gears structure is can unfolding mode, solve the box beam body welding upset displacement adjustment problems such as curb girder, after curb girder is hung in frock, frock is used to overturn, do not need to take overhead traveling crane again, and occupied ground area is little, not only alleviate the problem of workshop handling scarce capacity, also eliminate the dangerous operating type of traditional overhead traveling crane handling upset, improve production efficiency, reduce labour intensity, ensure that welding quality, extensively can extend to all middle clamping welding assemblies to produce.
Roller side beam welding displacement device structure composition of the present invention: 1. drive system, comprising: motor; 2. transmission system: reductor, gear, support wheel, power transmission shaft; 3. frock part: cylinder grip device, anti-down stopping means, pedestal; 4. control system: switch board, switch enclosure.
Technical scheme of the present invention is:
A kind of roller side beam welding displacement device, it is characterized in that, comprise pedestal, transmission shaft support, power transmission shaft, driving wheel, support wheel, support wheel bearing, cylinder, gear ring, switch enclosure, cylinder grip device, drive system, control system, drive system drives power transmission shaft to rotate, particularly:
At least two pairs of gear rings, cylinder are symmetrical vertically to be installed, and gear ring and cylinder are coaxially fixed and fitted or is processed as one, and to be inner towards the direction at device center, cylinder is positioned at gear ring inboard; Cylinder has workpiece hole, and this workpiece hole is used for workpiece to be welded and passes; Cylinder and gear ring are provided with consistent upper shed part, and this upper shed part is arranged to detachable vent cover of installing, and this upper shed part communicates with workpiece hole, and it is airtight that vent cover carries out installation as the lid of workpiece hole;
Below cylinder, in axial direction, pedestal is fixed two transmission shaft supports, passes for power transmission shaft, power transmission shaft is set with at least two driving wheels, each driving wheel coordinates linkage to rotate with often pair of cylinder or gear ring for rolling, and driving wheel is located at cylinder lower position; Power transmission shaft both sides are respectively equipped with support wheel, and support wheel coordinates with the outer side roll of cylinder, and support wheel is fixed on pedestal by support wheel bearing;
Connected by cylinder fixture in the middle of two pairs of cylinders, cylinder fixture comprises fixture mount, fixture mount is fixed on the periphery of the open pore of cylinder, and fixture mount is provided with top clamping device and the clamping sides device of vertical cylinder axis, for fixing to clamp workpiece;
Control system connects drive system.
Further, described vent cover is sector structure, and vent cover is removably fixing with cylinder, gear ring vertically by holding pin.
Further, also comprise anti-down stopping means, each support wheel bearing is provided with anti-down stopping means, anti-down stopping means comprises position limit arm, position limit arm one end is fixed on support wheel bearing, the other end is provided with position-limited wheel, and this position-limited wheel rolls with inner ring and coordinates in gear ring, and position limit arm is to gear ring axial limiting.
Further, described fixture mount is two supports and symmetry is located at axle both sides, and each fixture mount comprises riser, top board, and described top clamping device is arranged on top board, and top clamping device is top-fastener; Riser is provided with clamping sides device, and described clamping sides device is compactor.
Further, described top clamping device, clamping sides device are screw-type structure; The shape of described open pore is consistent with workpiece interface shape, and open pore and workpiece are matched in clearance.
Further, described drive system comprises drive motors.
Further, described drive system also comprises reductor.
Further, described control system comprises gauge tap, and gauge tap is provided with rotating button; Described support wheel bearing is ears type structure; Device adopts four support wheels symmetrical between two, and correspondingly, described pedestal adopts four important actors to support described support wheel bearing respectively, is provided with tie-beam between every two important actors, the core fixed conveyor shaft stool of tie-beam; Device is provided with two top clamping devices, and two described top clamping devices diagonal angle centered by axis is installed.
A kind of roller side beam welding displacement device, is characterized in that, adopt above-mentioned a kind of roller welding displacement device, wherein workpiece is curb girder.
The invention belongs to independent research, by the principle of meshed transmission gear, to be rotated by reductor driven gear with the rotating of motor thus drive whole cylindrical shell to realize 360 ° of rotations, solve traditional curb girder end damper base, the position welding such as spring strut, polishing coordinates the large and inefficient problem of the labour intensity of artificial upset by overhead traveling crane handling mode, CRH2 EMUs can be widely used in, CRH380A EMUs, SW220K, 206P, Argentina, No. 14, Beijing line, 140 administrative region of a city cars, Changping subway, Qingdao region, the production of the SDB80 subway side beam weldings such as Chengdu subway, the welding position achieving curb girder 360 ° of scope ends regulates, improve production efficiency.
Accompanying drawing explanation
The stereogram of an embodiment of Fig. 1 roller welding of the present invention displacement device.
Detailed description of the invention
Now in conjunction with the drawings and the specific embodiments the present invention is further described.
As shown in the figure: 1-folding lid; 2-cylinder; 3-gear ring; 4-cylinder grip device; 5-top-fastener; 6-clamp nut; 7-support wheel; 8-pedestal; 9-compactor; 10-holding pin; 11-compactor; 12-drive motors; The anti-down stopping means of 13-; 14-driving wheel; 15-transmission shaft support; 16-power transmission shaft.
Be that workpiece to be welded is illustrated with curb girder in the present embodiment.
Roller welding displacement device comprises pedestal, transmission shaft support, power transmission shaft, driving wheel, support wheel, support wheel bearing, cylinder, gear ring, switch enclosure, cylinder grip device, drive system, control system, drive system drives power transmission shaft to rotate, the at least two pairs of gear rings, cylinder are symmetrical vertically to be installed, gear ring and cylinder are coaxially fixing fits or is processed as one, to be inner towards the direction at device center, cylinder is positioned at gear ring inboard; Cylinder has workpiece hole, and this workpiece hole is used for curb girder and passes; Cylinder and gear ring are provided with consistent upper shed part, and this upper shed part is arranged to detachable vent cover of installing, and this upper shed part communicates with workpiece hole, and it is airtight that vent cover carries out installation as the lid of workpiece hole; Immediately below cylinder, in axial direction, pedestal is fixed two transmission shaft supports, passes for power transmission shaft, power transmission shaft is set with at least two driving wheels, each driving wheel coordinates linkage to rotate with often pair of cylinder or gear ring for rolling, and driving wheel is located at cylinder lower position; Power transmission shaft both sides are respectively equipped with support wheel, and support wheel coordinates with the outer side roll of cylinder, and support wheel is fixed on pedestal by support wheel bearing; Connected by cylinder fixture in the middle of two pairs of cylinders, cylinder fixture comprises fixture mount, fixture mount is fixed on the periphery of the open pore of cylinder, and fixture mount is provided with top clamping device and the clamping sides device of vertical cylinder axis, for fixing to clamp workpiece; Control system connects drive system.
Vent cover is sector structure, and vent cover is removably fixing with cylinder, gear ring vertically by holding pin.Each support wheel bearing is provided with anti-down stopping means, and anti-down stopping means comprises position limit arm, and position limit arm one end is fixed on support wheel bearing, and the other end is provided with position-limited wheel, and this position-limited wheel rolls with inner ring and coordinates in gear ring, and position limit arm is to gear ring axial limiting.Fixture mount is two supports and symmetry is located at axle both sides, and each fixture mount comprises riser, top board, and described top clamping device is arranged on top board, and top clamping device is top-fastener; Riser is provided with clamping sides device, and described clamping sides device is compactor.Further, described top clamping device, clamping sides device are screw-type structure.The shape of open pore is consistent with curb girder shape, and open pore and curb girder are matched in clearance.Drive system comprises drive motors, reductor.Open pore is the form fit of rectangular shape and curb girder.In other embodiments, open pore can adopt the shape that other and workpiece adapt.
Control system comprises gauge tap, and gauge tap is provided with rotating button; Support wheel bearing is ears type structure; Device adopts four support wheels symmetrical between two, and correspondingly, described pedestal adopts four important actors to support described support wheel bearing respectively, is provided with tie-beam between every two important actors, the core fixed conveyor shaft stool of tie-beam; Device is provided with two top clamping devices, and two described top clamping devices diagonal angle centered by axis is installed.
In a further embodiment, top clamping device, clamping sides device can adopt the modes such as hydraulic clamp to clamp.
In a further embodiment, mode secured opening lid and cylinder and the gear ring such as to be threaded can be adopted.
Concrete operations of the present invention are: opened by folding lid 1, put into curb girder, and each compactor on cylinder grip device 4, top-fastener is fastening, folding lid 1 fastens, holding pin 10 is installed, opens the control system switch of drive motors 12, operate rotating button as required.Anti-down stopping means 13 can prevent barrel and curb girder rollover or vertically move.Support wheel 7 back-up roller, driving wheel 14 head roll rotates.Cylinder 2 drives gear ring 3 by driving wheel 14, power transmission shaft 16, realizes cylinder and curb girder rotation.
The present invention is through deeply thinking, motor and gear drive principle are excavated, calculate rational gearratio, select satisfactory motor, pass through gear drive, realize workpiece 360 ° rotation, by mode gear ring and drum segment being arranged opening, curb girder is put into frock, the mode that gear ring opening adopts holding pin to insert realizes closing, and curb girder can be adjusted to downhand welding PA, fillet welding PB position is welded after clamping, through the side beam welding operation test of bogie subsidiary factory, result of use is good.
Finally should be noted that: above embodiment is only in order to illustrate that the technical scheme of this case is not intended to limit; Although be described in detail this case with reference to preferred embodiment, those of ordinary skill in the field have been to be understood that: still can modify to the detailed description of the invention of this case or carry out equivalent replacement to portion of techniques feature; And not departing from the spirit of the technical program, it all should be encompassed in the middle of the technical scheme scope of this case request protection.
Claims (10)
1. a roller welding displacement device, it is characterized in that, comprise pedestal, transmission shaft support, power transmission shaft, driving wheel, support wheel, support wheel bearing, cylinder, gear ring, switch enclosure, cylinder grip device, drive system, control system, drive system drives power transmission shaft to rotate, particularly:
At least two pairs of gear rings, cylinder are symmetrical vertically to be installed, and gear ring and cylinder are coaxially fixed and fitted or is processed as one, and to be inner towards the direction at device center, cylinder is positioned at gear ring inboard; Cylinder has workpiece hole, and this workpiece hole is used for workpiece and passes; Cylinder and gear ring are provided with consistent upper shed part, and this upper shed part is arranged to detachable vent cover of installing, and this upper shed part communicates with workpiece hole, and it is airtight that vent cover carries out installation as the lid of workpiece hole;
Below cylinder, in axial direction, pedestal is fixed two transmission shaft supports, passes for power transmission shaft, power transmission shaft is set with at least two driving wheels, each driving wheel coordinates linkage to rotate with often pair of cylinder or gear ring for rolling, and driving wheel is located at cylinder lower position; Power transmission shaft both sides are respectively equipped with support wheel, and support wheel coordinates with the outer side roll of cylinder, and support wheel is fixed on pedestal by support wheel bearing;
Connected by cylinder fixture in the middle of two pairs of cylinders, cylinder fixture comprises fixture mount, fixture mount is fixed on the periphery of the open pore of cylinder, and fixture mount is provided with top clamping device and the clamping sides device of vertical cylinder axis, for fixing to clamp workpiece;
Control system connects drive system.
2. a kind of roller welding displacement device according to claim 1, it is characterized in that, described vent cover is sector structure, and vent cover is removably fixing with cylinder, gear ring vertically by holding pin.
3. a kind of roller welding displacement device according to claim 1, it is characterized in that, also comprise anti-down stopping means, each support wheel bearing is provided with anti-down stopping means, anti-down stopping means comprises position limit arm, and position limit arm one end is fixed on support wheel bearing, and the other end is provided with position-limited wheel, this position-limited wheel rolls with inner ring and coordinates in gear ring, and position limit arm is to gear ring axial limiting.
4. a kind of roller welding displacement device according to claim 2, it is characterized in that, also comprise anti-down stopping means, each support wheel bearing is provided with anti-down stopping means, anti-down stopping means comprises position limit arm, and position limit arm one end is fixed on support wheel bearing, and the other end is provided with position-limited wheel, this position-limited wheel rolls with inner ring and coordinates in gear ring, and position limit arm is to gear ring axial limiting.
5. according to the arbitrary described a kind of roller welding displacement device of Claims 1-4, it is characterized in that, described fixture mount is two supports and symmetry is located at axle both sides, each fixture mount comprises riser, top board, described top clamping device is arranged on top board, and top clamping device is top-fastener; Riser is provided with clamping sides device, and described clamping sides device is compactor.
6., according to the arbitrary described a kind of roller welding displacement device of Claims 1-4, it is characterized in that, described top clamping device, clamping sides device are screw-type structure; The shape of described open pore is consistent with workpiece interface shape, and open pore and workpiece are matched in clearance.
7., according to the arbitrary described a kind of roller welding displacement device of Claims 1-4, it is characterized in that, described drive system comprises drive motors.
8., according to the arbitrary described a kind of roller welding displacement device of Claims 1-4, it is characterized in that, described drive system also comprises reductor.
9., according to the arbitrary described a kind of roller welding displacement device of Claims 1-4, it is characterized in that, described control system comprises gauge tap, and gauge tap is provided with rotating button; Described support wheel bearing is ears type structure; Device adopts four support wheels symmetrical between two, and correspondingly, described pedestal adopts four important actors to support described support wheel bearing respectively, is provided with tie-beam between every two important actors, the core fixed conveyor shaft stool of tie-beam; Device is provided with two top clamping devices, and two described top clamping devices diagonal angle centered by axis is installed.
10. a roller side beam welding displacement device, is characterized in that, adopt the arbitrary described a kind of roller welding displacement device of the claims 1 to 9, wherein workpiece is curb girder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510325282.7A CN104889662B (en) | 2015-06-12 | 2015-06-12 | Rolling type welding position shifting device and rolling type side beam welding position shifting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510325282.7A CN104889662B (en) | 2015-06-12 | 2015-06-12 | Rolling type welding position shifting device and rolling type side beam welding position shifting device |
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| CN104889662A true CN104889662A (en) | 2015-09-09 |
| CN104889662B CN104889662B (en) | 2017-04-12 |
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Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107457731A (en) * | 2017-09-15 | 2017-12-12 | 天津电力机车有限公司 | HXD2C types electric locomotive traction base overhauls auxiliary mould |
| CN107890964A (en) * | 2017-11-21 | 2018-04-10 | 北京特种机械研究所 | A kind of auxiliary fabricating tools with spinfunction |
| CN109317912A (en) * | 2018-12-07 | 2019-02-12 | 涡阳县盛鸿科技有限公司 | A kind of turnover device for cross column welding |
| CN109317911A (en) * | 2018-12-07 | 2019-02-12 | 涡阳县盛鸿科技有限公司 | A kind of cross column welding production line |
| CN109465592A (en) * | 2018-12-26 | 2019-03-15 | 山东大汉建设机械股份有限公司 | A kind of jib for tower crane welder and working method |
| CN110744072A (en) * | 2019-11-04 | 2020-02-04 | 唐山瑞川机械制造有限公司 | Online turning method for mixing rolling ring in sintering system |
| CN110900087A (en) * | 2019-12-25 | 2020-03-24 | 何小红 | Welding fixing mechanism for mechanical parts of construction equipment |
| CN111015055A (en) * | 2019-12-25 | 2020-04-17 | 何小红 | Working method of welding fixing mechanism for mechanical parts of construction equipment |
| CN111589661A (en) * | 2020-06-15 | 2020-08-28 | 江铃汽车股份有限公司 | Transitional overturning clamp for switching angles |
| CN111889944A (en) * | 2020-08-06 | 2020-11-06 | 中车唐山机车车辆有限公司 | Frame type chassis overturning tool |
| CN112621303A (en) * | 2020-12-21 | 2021-04-09 | 陈云华 | Supporting clamping rotary table for machining thin-wall workpieces |
| CN112692497A (en) * | 2020-11-25 | 2021-04-23 | 广州瑞松智能科技股份有限公司 | Synchronous servo drive structure at two ends of turnover mechanism |
| CN112719751A (en) * | 2020-12-28 | 2021-04-30 | 哈尔滨市阿城区兴盛腻子粉厂 | Welding supporting device |
| CN113547278A (en) * | 2021-07-30 | 2021-10-26 | 中国船舶重工集团柴油机有限公司 | Diesel engine frame and welding tool for frame |
| CN114833219A (en) * | 2022-04-21 | 2022-08-02 | 中国建筑第二工程局有限公司 | Automatic safety straightening device for steel structure column beam |
| CN115740933A (en) * | 2022-11-25 | 2023-03-07 | 青岛瑞莱斯机械有限公司 | Multi-directional rotary welding auxiliary equipment |
| CN115890120A (en) * | 2022-12-22 | 2023-04-04 | 淄博永正化工设备有限公司 | Special deflection device for welding reaction kettle cover |
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Cited By (23)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107457731A (en) * | 2017-09-15 | 2017-12-12 | 天津电力机车有限公司 | HXD2C types electric locomotive traction base overhauls auxiliary mould |
| CN107890964A (en) * | 2017-11-21 | 2018-04-10 | 北京特种机械研究所 | A kind of auxiliary fabricating tools with spinfunction |
| CN109317912A (en) * | 2018-12-07 | 2019-02-12 | 涡阳县盛鸿科技有限公司 | A kind of turnover device for cross column welding |
| CN109317911A (en) * | 2018-12-07 | 2019-02-12 | 涡阳县盛鸿科技有限公司 | A kind of cross column welding production line |
| CN109465592A (en) * | 2018-12-26 | 2019-03-15 | 山东大汉建设机械股份有限公司 | A kind of jib for tower crane welder and working method |
| CN110744072A (en) * | 2019-11-04 | 2020-02-04 | 唐山瑞川机械制造有限公司 | Online turning method for mixing rolling ring in sintering system |
| CN111015055B (en) * | 2019-12-25 | 2021-11-26 | 扬州市生态科技新城杭集中小企业服务中心有限公司 | Working method of welding fixing mechanism for mechanical parts of construction equipment |
| CN110900087B (en) * | 2019-12-25 | 2021-11-19 | 安徽金贺财建筑工程有限公司 | Welding fixing mechanism for mechanical parts of construction equipment |
| CN111015055A (en) * | 2019-12-25 | 2020-04-17 | 何小红 | Working method of welding fixing mechanism for mechanical parts of construction equipment |
| CN110900087A (en) * | 2019-12-25 | 2020-03-24 | 何小红 | Welding fixing mechanism for mechanical parts of construction equipment |
| CN111589661A (en) * | 2020-06-15 | 2020-08-28 | 江铃汽车股份有限公司 | Transitional overturning clamp for switching angles |
| CN111889944A (en) * | 2020-08-06 | 2020-11-06 | 中车唐山机车车辆有限公司 | Frame type chassis overturning tool |
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| CN112719751B (en) * | 2020-12-28 | 2022-09-30 | 深圳市嘉联激光有限公司 | Welding supporting device |
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| CN114833219B (en) * | 2022-04-21 | 2023-12-19 | 中国建筑第二工程局有限公司 | Automatic safe straightening device for steel structure column beam |
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| CN104889662B (en) | 2017-04-12 |
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