CN121423917A - A smart welding device for oil-immersed transformer heat sinks - Google Patents

A smart welding device for oil-immersed transformer heat sinks

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Publication number
CN121423917A
CN121423917A CN202511537449.6A CN202511537449A CN121423917A CN 121423917 A CN121423917 A CN 121423917A CN 202511537449 A CN202511537449 A CN 202511537449A CN 121423917 A CN121423917 A CN 121423917A
Authority
CN
China
Prior art keywords
welding
assembly
oil
main base
positioning
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
CN202511537449.6A
Other languages
Chinese (zh)
Inventor
韩毅松
赵贺阳
吴永
闵波
翟建军
张燕
丁俊东
郝东瑞
边俊夫
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.)
Xinye Power Supply Co of State Grid Henan Electric Power Co Ltd
Original Assignee
Xinye Power Supply Co of State Grid Henan Electric Power 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
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Application filed by Xinye Power Supply Co of State Grid Henan Electric Power Co Ltd filed Critical Xinye Power Supply Co of State Grid Henan Electric Power Co Ltd
Priority to CN202511537449.6A priority Critical patent/CN121423917A/en
Publication of CN121423917A publication Critical patent/CN121423917A/en
Pending legal-status Critical Current

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Abstract

The invention relates to an intelligent welding device for radiating fins of an oil immersed transformer, which is used for continuously welding a plurality of radiating fins in the transformer with oil collecting pipes at two ends of the radiating fins, and comprises a main base, a plurality of oil collecting pipes and a plurality of oil collecting pipes, wherein the main base is of a plane plate-shaped structure as a whole; the invention relates to an expanding inner tube type positioning clamp, which adopts an L-shaped telescopic extension frame to be arranged at the left side and the right side of a main base, a bearing component longitudinally arranged in the middle of the upper surface of the main base, an adjustable positioning component which is provided with a group and is arranged on the upper surface of the main base in a bilateral symmetry mode relative to the bearing component, a follow-up transverse moving component which is transversely arranged in front of the upper part of a main frame, and a welding robot which is arranged on the upper surface of the follow-up transverse moving component and is driven by the follow-up transverse moving component to transversely position and move along the long side direction of the horizontal part of the main base.

Description

Intelligent welding device for radiating fins of oil immersed transformer
Technical Field
The invention belongs to the technical field of transformer cooling fin processing, and particularly relates to an intelligent welding device for an oil immersed transformer cooling fin.
Background
The intelligent welding device for the oil immersed transformer has the advantages that a certain amount of heat can be generated when the oil immersed transformer works, the contact area between the transformer and the outside is increased through the plurality of radiating fins communicated with the oil collecting pipe, heat transfer is accelerated, the heat generated inside the transformer is transferred to the outside environment, and therefore the temperature of the transformer is reduced, accidents caused by overheat of the transformer can be avoided, ageing of insulating materials inside the transformer can be reduced, the service life of the transformer is prolonged, the radiating fins of the oil immersed transformer are usually welded with the oil collecting pipes at the two ends of the radiating fins in a manual mode, the labor cost is relatively high, the technical level difference exists in manual welding, the welding quality is unstable and the welding defect is likely to occur due to the limitation of the working state, in addition, a welder needs to keep a fixed posture for a long time, fatigue is likely to be caused, the working efficiency is affected, the labor intensity is high, the conditions such as rotation or inclination of the oil collecting pipes cannot be guaranteed when the welder is used, the welding quality is affected, and even welding failure is caused, and therefore the intelligent welding device for the oil immersed transformer has simple and reasonable structure, continuous welding and high working efficiency and high welding quality is very necessary.
Disclosure of Invention
First technical problem
The present application is mainly directed to the following technical problems in view of the above state of the art:
1. the cost is relatively high by manually welding the radiating fin and the oil collecting pipes at the two ends of the radiating fin;
2. because of being limited by the technical level and the working state, the welding quality is possibly unstable, and the welding defect is easy to occur;
3. the manual welding requires a welder to keep a fixed posture for a long time, so that fatigue is easily caused, the working efficiency is influenced, and the labor intensity is high;
4. the condition that the oil collecting pipe does not rotate or incline and the like can not be ensured during manual welding, thereby influencing the welding quality and even causing the failure of welding work.
(II) technical scheme
The invention aims to overcome the defects of the prior art, and provides the intelligent welding device for the radiating fin of the oil-immersed transformer, which has the advantages of simple and reasonable structure, continuous welding realization, work efficiency improvement and high welding quality.
The invention discloses an intelligent welding device for radiating fins of an oil immersed transformer, which is used for continuously welding a plurality of radiating fins in the transformer with oil collecting pipes at two ends of the radiating fins, and comprises the following components:
The main base is of a plane plate-shaped structure as a whole;
The expanding inner tube type positioning clamp is provided with a group of expanding inner tube type positioning clamps, is symmetrically arranged left and right relative to the main base, respectively stretches into the interiors of two ends of the oil collecting tube which is horizontally arranged and is used for carrying out inner expanding type supporting and positioning on the oil collecting tube, and the expanding inner tube type positioning clamp is arranged at the left and right sides of the main base by adopting telescopic extension frames of L-shaped structures;
the bearing component is used for reliably bearing the middle part of the oil collecting pipe and is longitudinally erected in the middle part of the upper surface of the main base;
The adjustable positioning assembly is used for adaptively adjusting, positioning and supporting two ends of the oil collecting pipe with the diameters of multiple specifications, is provided with a group and is symmetrically arranged on the upper surface of the main base in a left-right mode relative to the supporting assembly;
the follow-up transverse moving assembly is transversely arranged in front of the upper part of the main base, and the long side and the short side of the horizontal part of the follow-up transverse moving assembly correspond to the long side and the short side of the horizontal part of the main base respectively;
And the welding robot is arranged on the upper surface of the follow-up transverse moving assembly and is driven by the follow-up transverse moving assembly to transversely position and move along the long side direction of the horizontal part of the main base.
Further, the expanding inner tube type positioning clamp comprises a driver, the output end of the driver is connected with a screw, the upper part and the lower part of the screw are respectively connected with a short threaded sleeve rod cross joint assembly and a long threaded sleeve rod cross joint assembly in a matched mode, and the end part of the long threaded sleeve rod cross joint assembly is provided with a guide disc with a circular structure.
Further, the inner tube expanding type positioning clamp further comprises a plurality of crossed expansion frames with X-shaped structures, two ends of the lower portion of each crossed expansion frame are respectively and movably connected with the short screw sleeve rod cross joint assembly and the long screw sleeve rod cross joint assembly, one end of the upper portion of each crossed expansion frame is movably connected with a transverse plate, and the other end of each crossed expansion frame is in sliding connection with a transverse groove arranged in the transverse plate.
According to the invention, the expanding inner pipe type positioning clamp is adopted to extend into the interiors of two ends of the oil collecting pipe, and then the expanding inner pipe type positioning clamp is expanded outwards along with the continuous expansion of the plurality of cross-shaped expansion frames, so that the expanding inner pipe type positioning clamp is abutted against the inner wall of the oil collecting pipe, the reliable inner expanding type supporting and positioning of the oil collecting pipe is realized, the conditions of autorotation, inclination and the like of the oil collecting pipe during welding are avoided, and the welding quality is improved.
Further, the bearing assembly comprises a rotary table arranged on the upper surface of the main base, a hydraulic cylinder is arranged above the rotary table, a bearing plate is arranged at the top output end of the hydraulic cylinder, the bearing plate is an arc mechanism, the inner radian of the bearing plate is the same as the outer radian of the oil collecting pipe, and two sides of the lower surface of the bearing plate are connected with the top plate of the hydraulic cylinder through guide rods in a longitudinally movable guiding manner.
In the invention, the middle part of the oil collecting pipe is supported by the supporting component, the middle part is prevented from being pressed down due to the dead weight of the oil collecting pipe, the oil collecting pipe is bent, and the supporting effect on the whole oil collecting pipe can be realized by matching with the adjustable positioning components at two sides, so that the supporting effect is greatly improved.
Further, the adjustable positioning components are located on two sides of the bearing component, the adjustable positioning components comprise adjustable positioning frames, a group of sliding seats are horizontally and symmetrically arranged on the bottom surface of each adjustable positioning frame, the sliding seats are respectively in sliding connection with a group of sliding rails located on the upper surface of the main base, and the lower surfaces of the sliding rails are installed on the main base through a plurality of supporting frames in a shape like a Chinese character 'ji'.
Further, the adjustable positioning frame comprises an I-shaped frame, a positioning carrier roller for supporting the bottom surface of the oil collecting pipe is arranged above the middle of the I-shaped frame, a positioning side disc for clamping and positioning the side end of the oil collecting pipe is arranged on the outer side surface of the positioning carrier roller, and two ends of the positioning carrier roller are arranged on the I-shaped frame through BTD-605-2Z-15-B-MTC-5 type T-shaped highly-specified bearing seat assemblies.
Further, the inside both sides of horizontal plate all are provided with the spout on the I-shaped frame, the equal movable mounting in spout has the movable rod, all be provided with the location clamp lever directly over the movable rod, the movable rod middle part is connected with corresponding location clamp lever through backup pad, both ends all through the end plate, all install the silk seat on the end plate of movable rod one end, the inside two-way lead screw that is provided with of silk seat, two-way lead screw middle part and the bearing plate swing joint that is located the I-shaped frame in front, the hand wheel is installed to two-way lead screw one end.
According to the invention, the lower surface of the circumference of the oil collecting pipe is supported and supported by the positioning carrier roller of the adjustable positioning assembly, then the moving rod and the positioning clamping rod are driven to move by the bidirectional screw rod, the two side surfaces of the circumference of the oil collecting pipe are effectively clamped, the three-point positioning function of the oil collecting pipe is realized by the positioning clamping rod and the positioning carrier roller, the stability of the oil collecting pipe during welding is ensured, the welding quality and efficiency are greatly improved, in addition, the positioning clamping operation of the oil collecting pipe with different diameter specifications can be suitable by adjusting the interval between the positioning clamping rods, the practicability is strong, and the flexibility is good.
Further, the follow-up sideslip subassembly is including being located the U template of main base upper surface, U template top is provided with the lead screw, threaded fit is connected with the sliding closure on the lead screw, just the one end that the lead screw runs through U template is connected with RF37-32.4-Y271-4-M1-B-F120 helical gear motor power, both sides all are provided with the polished rod around the sliding closure is inside.
According to the invention, the sliding cover of the follow-up transverse moving assembly is horizontally and transversely displaced along the lead screw, so that the welding robot can be driven to displace, thereby realizing uninterrupted welding operation of the oil collecting pipe and the plurality of cooling fins, realizing continuous welding work and improving the working efficiency.
Further, the welding robot comprises a welding base positioned on the upper surface of the sliding cover, a control box is arranged above the welding base, a longitudinal drag chain sliding rail moving assembly is arranged on the upper surface of the control box, a transverse drag chain sliding rail moving assembly is arranged on the longitudinal drag chain sliding rail moving assembly along the vertical direction of the longitudinal drag chain sliding rail moving assembly, and a welding assembly is arranged on one side of the lower surface of the transverse drag chain sliding rail moving assembly.
Further, the welding assembly comprises a swinging rod, the upper end of the swinging rod is movably connected with the lower surface of the transverse drag chain sliding rail moving assembly through a swinging shaft, a welding gun is arranged at the lower end of the swinging rod, and the welding gun is movably connected with the lower end of the swinging rod through a first rotator and a second rotator, wherein the rotation axes of the first rotator and the second rotator are mutually perpendicular to each other.
Compared with manual welding, the welding robot is time-saving and labor-saving, reduces labor intensity, has better welding quality and effect, is convenient for intermittently completing welding operation of the radiating fins and the oil collecting pipes by utilizing the reciprocating transverse displacement of the transverse drag chain sliding rail moving assembly, can be matched with the longitudinal drag chain sliding rail moving assembly to adaptively adjust the welding height of the welding gun, and can be used for adjusting the welding angle of the welding gun by utilizing the first rotator and the second rotator.
(III) beneficial effects
1. According to the invention, the traditional manual welding mode is replaced by the automatic welding equipment of the welding robot, so that the production cost is relatively low, the welding defect is not easy to occur, and the working efficiency is effectively improved.
2. The bearing assembly and the adjustable positioning assembly are matched for use to reliably position and bear the oil collecting pipe, and the inner expansion type supporting and positioning of the oil collecting pipe is carried out by utilizing the inner expansion type positioning fixtures at the two ends, so that the welding robot is convenient for welding the radiating fins and the oil collecting pipes at the two sides of the radiating fins, and the inclination of the oil collecting pipe during welding is avoided.
3. The follow-up transverse moving assembly is matched with the welding robot, the follow-up transverse moving assembly drives the welding robot to move along the central axis of the oil collecting pipe, so that the welding robot on the follow-up transverse moving assembly can weld a plurality of cooling fins on the oil collecting pipe in a short arc mode, the quality of welding seams is guaranteed, after one cooling fin is welded, the follow-up transverse moving assembly enables the welding robot to horizontally move to a next position to be welded for welding, continuous welding operation is achieved on the cooling fins on the oil collecting pipe, and the welding work efficiency is improved.
4. The welding robot can adjust the welding height, the welding angle and the welding position according to the requirements, so that the welding robot can be better suitable for welding work of the radiating fin and the oil collecting pipe.
Drawings
Fig. 1 is a front view of the present invention.
FIG. 2 is a schematic structural view of the expanded inner tube positioning jig of the present invention.
Figure 3 is a schematic view of the construction of the support assembly of the present invention.
Fig. 4 is a schematic structural view of an adjustable positioning assembly according to the present invention.
Fig. 5 is a schematic view of a portion of the structure of fig. 4 according to the present invention.
FIG. 6 is a schematic view of the follower traversing assembly of the present invention.
Fig. 7 is an enlarged schematic view of the whole structure and a partial structure of the welding robot of the present invention.
Fig. 8 is a schematic structural view of a swing assembly according to embodiment 3 of the present invention.
In the drawing, 1, a main base 2, a telescopic extension frame 3, an expanding inner tube type positioning clamp 31, a driver 32, a screw 33, a short screw rod cross joint assembly 34, a long screw rod cross joint assembly 35, a guide disc 36, a cross expansion frame 37, a transverse plate 38, a transverse groove 4, a bearing component 41, a rotary table 42, a hydraulic cylinder 43, a bearing plate 44, a guide rod 5, an adjustable positioning component 51, an adjustable positioning frame 11, a I-shaped frame 12, a positioning carrier roller 13, a positioning side disc 14, a T-shaped height-designated type bearing seat component 15, a sliding groove 16, a moving rod 17, a supporting plate 18, a positioning and transverse clamping rod 19, an end plate 101, a wire seat 102, a bidirectional screw 103, a bearing plate 104, a hand wheel 52, a sliding rail 53, a supporting frame 54, a sliding seat 6, a follow-up component 61, a U-shaped plate 62, a lead screw 63, a bevel gear speed reducing motor 64, a sliding cover 65, a polished rod 7, a welding robot 71, a welding base 72, a control box 73, a longitudinal drag chain moving assembly 74, a transverse drag chain moving assembly 75, a swinging rod 76, a welding gun 77, a first rotary gear 79, a second rotary gear 8, a limiting block 21, a gear wheel 22, a rotary gear assembly 24, a rotary plate 22, a gear assembly 25, a rotary plate 22, a gear assembly 26, a rotary plate assembly 25, a arc plates, a gear assembly 25, a rotating plates, a rotating assembly 25, a rotating plates, a gear plates, a rotating plates, and the like.
Detailed Description
The invention is further described below with reference to examples and/or figures.
Example 1
As shown in fig. 1-2, an intelligent welding device for radiating fins of an oil immersed transformer is used for continuous welding of a plurality of radiating fins and oil collecting pipes at two ends of the radiating fins in the transformer, and the device comprises:
The main base is of a plane plate-shaped structure as a whole;
The expanding inner tube type positioning clamp is provided with a group of expanding inner tube type positioning clamps, is symmetrically arranged left and right relative to the main base, respectively stretches into the interiors of two ends of the oil collecting tube which is horizontally arranged and is used for carrying out inner expanding type supporting and positioning on the oil collecting tube, and the expanding inner tube type positioning clamp is arranged at the left and right sides of the main base by adopting telescopic extension frames of L-shaped structures;
the bearing component is used for reliably bearing the middle part of the oil collecting pipe and is longitudinally erected in the middle part of the upper surface of the main base;
The adjustable positioning assembly is used for adaptively adjusting, positioning and supporting two ends of the oil collecting pipe with the diameters of multiple specifications, is provided with a group and is symmetrically arranged on the upper surface of the main base in a left-right mode relative to the supporting assembly;
the follow-up transverse moving assembly is transversely arranged in front of the upper part of the main base, and the long side and the short side of the horizontal part of the follow-up transverse moving assembly correspond to the long side and the short side of the horizontal part of the main base respectively;
And the welding robot is arranged on the upper surface of the follow-up transverse moving assembly and is driven by the follow-up transverse moving assembly to transversely position and move along the long side direction of the horizontal part of the main base.
The expanding inner tube type positioning clamp 3 comprises a driver 31, the output end of the driver 31 is connected with a screw rod 32, the upper part and the lower part of the screw rod 32 are respectively connected with a short screw sleeve rod cross joint assembly 33 and a long screw sleeve rod cross joint assembly 34 in a matched mode, and a guide disc 35 with a circular structure is arranged at the end of the long screw sleeve rod cross joint assembly 34.
The expanding inner tube type positioning fixture 3 further comprises a plurality of crossed expansion frames 36 with X-shaped structures, two ends of the lower portion of each crossed expansion frame 36 are respectively and movably connected with the short screw sleeve rod cross joint assembly 33 and the long screw sleeve rod cross joint assembly 34, one end of the upper portion of each crossed expansion frame 36 is movably connected with a transverse plate 37, and the other end of each crossed expansion frame is slidably connected with a transverse groove 38 arranged in the transverse plate 37.
In the embodiment, the working principle of the expanding inner tube type positioning clamp is that the expanding inner tube type positioning clamp on two sides is driven by the telescopic extension frame to approach the oil collecting tube, under the guiding action of the guide disc, the expanding inner tube type positioning clamp stretches into the oil collecting tube, then the driver is started, the driver drives the short turnbuckle rod cross joint assembly and the long turnbuckle rod cross joint assembly to approach each other through the lead screw (in actual use, the short turnbuckle rod cross joint assembly and the long turnbuckle rod cross joint assembly can be respectively connected with the lead screw reversing nut in a matched manner so as to realize synchronous approaching or moving away along the lead screw), thus the two ends of the lower part of the cross expansion frame are mutually close, one end of the upper part drives the transverse plates to displace, the other end of the upper part of the cross expansion frame is matched with the transverse grooves to slide, the whole cross expansion frame stretches outwards, and the cross expansion frames drive the transverse plates to synchronously expand, so that the inner expansion type expansion frame is tightly abuts against the inner wall of the oil collecting tube, and the oil collecting tube is reliably locked, and the oil collecting tube is prevented from rotating or shifting or tilting during welding.
The invention relates to an intelligent welding device for radiating fins of an oil immersed transformer, in use, an automatic welding device of a welding robot 7 is adopted to replace the traditional manual welding mode, the production cost is relatively low, welding defects are not easy to occur, and the working efficiency is effectively improved; the bearing component 4 and the adjustable positioning component 5 are matched for reliable positioning and bearing of the oil collecting pipe 8, and the inner expansion type supporting and positioning of the oil collecting pipe 8 are carried out by utilizing the expanding inner pipe type positioning clamps 3 at the two ends, so that the welding robot 7 can conveniently weld the radiating fins 9 and the oil collecting pipes 8 at the two sides of the radiating fins, and the inclination of the oil collecting pipe 8 during welding is avoided; the follow-up transverse moving assembly 6 is matched with the welding robot 7, the follow-up transverse moving assembly 6 drives the welding robot 7 to move along the central axis of the oil collecting pipe 8, so that the welding robot 7 on the follow-up transverse moving assembly 6 can weld a plurality of cooling fins 9 on the oil collecting pipe 8 in a short arc mode, the quality of welding seams is guaranteed, after one cooling fin 9 is welded, the follow-up transverse moving assembly 6 enables the welding robot 7 to move horizontally to a next position to be welded for welding, continuous welding operation is achieved on the cooling fins 9 on the oil collecting pipe 8, the welding working efficiency is improved, the welding robot 7 can adjust the welding height, the welding angle and the welding position according to requirements, and the welding robot can be well suitable for welding work of the cooling fins 9 and the oil collecting pipe 8.
Example 2
As shown in fig. 3-5, an intelligent welding device for radiating fins of an oil immersed transformer is used for continuous welding of a plurality of radiating fins 9 and oil collecting pipes 8 at two ends of the radiating fins in the transformer, and the device comprises:
the main base 1 is of a plane plate-shaped structure as a whole;
The expanding inner tube type positioning clamp 3 is provided with a group of expanding inner tube type positioning clamps, is symmetrically arranged left and right relative to the main base 1, respectively stretches into the two ends of the oil collecting tube 8 which is horizontally arranged and is used for carrying out internal expansion type supporting and positioning on the oil collecting tube, and the expanding inner tube type positioning clamp 3 is arranged at the left and right sides of the main base 1 by adopting a telescopic extension frame 2 with an L-shaped structure;
a bearing component 4 for reliably bearing the middle part of the oil collecting pipe 8, wherein the bearing component 4 is longitudinally erected in the middle part of the upper surface of the main base 1;
The adjustable positioning components 5 are used for adaptively adjusting, positioning and supporting the two ends of the oil collecting pipes 8 with the diameters of multiple specifications, and the adjustable positioning components 5 are provided with a group and are symmetrically arranged on the upper surface of the main base 1 left and right relative to the supporting component 4;
a follow-up traversing assembly 6 which is transversely arranged in front of the upper part of the main base 1, and the long and short sides of the horizontal part of the follow-up traversing assembly 6 are respectively corresponding to the long and short sides of the horizontal part of the main base 1;
And the welding robot 7 is arranged on the upper surface of the follow-up transverse moving assembly 6, and the welding robot 7 is driven by the follow-up transverse moving assembly 6 to transversely position and move along the long side direction of the horizontal part of the main base 1.
The bearing assembly 4 comprises a rotary table 41 arranged on the upper surface of the main base 1, a hydraulic cylinder 42 is arranged above the rotary table 41, a bearing plate 43 is arranged at the top output end of the hydraulic cylinder 42, the bearing plate 43 is an arc mechanism, the inner radian of the bearing plate 43 is the same as the outer radian of the oil collecting pipe 8, and two sides of the lower surface of the bearing plate 43 are longitudinally movably guided and connected with the top plate of the hydraulic cylinder 42 through guide rods 44.
In the embodiment, the working principle of the bearing assembly is that the bearing plate of the arc-shaped structure of the bearing assembly is rotated to the direction parallel to the oil collecting pipe by utilizing the rotary table, then the hydraulic cylinder is started, and under the guiding action of the guide rod, the hydraulic cylinder stably and reliably drives the bearing plate to stably move upwards, so that the bearing plate and the adjustable positioning assembly are positioned at the same height, the bearing plate is convenient for better supporting the oil collecting pipe, the bearing plate of the arc-shaped structure of the bearing assembly is effectively attached to the outer arc-shaped surface of the oil collecting pipe through the inner arc-shaped surface of the bearing plate, the reliable supporting of the oil collecting pipe is realized, and the welding robot is convenient for welding the radiating fins on the oil collecting pipe.
The adjustable positioning components 5 are positioned on two sides of the bearing component 4, the adjustable positioning components 5 comprise adjustable positioning frames 51, a group of sliding seats 54 are horizontally and symmetrically arranged on the bottom surface of each adjustable positioning frame 51, the sliding seats 54 are respectively in sliding connection with a group of sliding rails 52 positioned on the upper surface of the main base 1, and the lower surfaces of the sliding rails 52 are arranged on the main base 1 through a plurality of supporting frames 53 in a shape like a Chinese character 'ji'.
The adjustable positioning frame 51 comprises an I-shaped frame 11, a positioning carrier roller 12 for supporting the bottom surface of the oil collecting pipe 8 is arranged above the middle part of the I-shaped frame 11, a positioning side disc 13 for clamping and positioning the side end of the oil collecting pipe 8 is arranged on the outer side surface of the positioning carrier roller 12, and two ends of the positioning carrier roller 12 are all arranged on the I-shaped frame 11 through BTD-605-2Z-15-B-MTC-5 type T-shaped height-designated bearing seat assemblies 14.
The utility model discloses a hydraulic lifting device for an industrial type frame, including I-shaped frame 11, including horizontal plate, bearing plate 103, hand wheel 104, locating clamp bar 18, support plate 17, end plate 19, screw seat 101, bidirectional screw 102, bearing plate 103 swing joint, hand wheel 104 is installed to bidirectional screw 102 middle part and be located I-shaped frame 11 in front of, all be provided with spout 15 on the inside both sides of horizontal plate on I-shaped frame 11, spout 15 inside all movable mounting has movable rod 16, all be provided with locating clamp bar 18 directly over the movable rod 16, the middle part of movable rod 16 passes through backup pad 17, both ends all are connected with corresponding locating clamp bar 18 through end plate 19, all install screw seat 101 on the end plate 19 of movable rod 16 one end, screw seat 101 is inside to be provided with bidirectional screw 102, bidirectional screw 102 middle part and be located the preceding bearing plate 103 swing joint of I-shaped frame 11.
In the embodiment, the middle part of the oil collecting pipe is supported by only the bearing assembly, which is insufficient, the two ends of the oil collecting pipe sag due to dead weight, so that the oil collecting pipe is bent, and the same only one group of adjustable positioning assemblies have poor bearing effect on the oil collecting pipe, and can possibly lead the middle part of the oil collecting pipe to twist and the like, so that the bearing assembly in the middle part is matched with one group of adjustable positioning assemblies arranged on two sides to reliably support the whole oil collecting pipe;
The working principle of the adjustable positioning assembly is that two ends of an oil collecting pipe are placed on a positioning carrier roller, then an adjustable positioning frame is moved, so that positioning side plates on the outer side face of the positioning carrier roller are tightly abutted and locked with two ends of the oil collecting pipe (in the actual use process, a group of expanding inner pipe type positioning clamps can be independently adopted to perform inner expansion positioning on the oil collecting pipe, a group of positioning side plates can be independently used to perform clamping locking on two side ends of the oil collecting pipe, a group of expanding inner pipe type positioning clamps can be used to cooperate with a group of positioning side plates to perform double positioning on two ends of the oil collecting pipe, the locking effect is greatly improved, the positioning side plates at the moment are in an interference with the expanding inner pipe type positioning clamps, the positioning side plates are of a lower semicircular arc structure, then a hand wheel is utilized, the hand wheel drives end plates to move through cooperation of a bidirectional screw rod and a wire seat, so that the moving rod, a support plate and the positioning clamp rod can be mutually close to or far away, on one hand, on the one hand, the group of positioning clamp rods and the positioning carrier roller can be used to perform point positioning on the periphery of the oil collecting pipe, on the whole, on the premise that the oil collecting pipe is more stable when being welded, on the other hand, the whole is enabled to be suitable for large and small in diameter, and the practicality is improved.
The invention relates to an intelligent welding device for radiating fins of an oil immersed transformer, in use, an automatic welding device of a welding robot 7 is adopted to replace the traditional manual welding mode, the production cost is relatively low, welding defects are not easy to occur, and the working efficiency is effectively improved; the bearing component 4 and the adjustable positioning component 5 are matched for reliable positioning and bearing of the oil collecting pipe 8, and the inner expansion type supporting and positioning of the oil collecting pipe 8 are carried out by utilizing the expanding inner pipe type positioning clamps 3 at the two ends, so that the welding robot 7 can conveniently weld the radiating fins 9 and the oil collecting pipes 8 at the two sides of the radiating fins, and the inclination of the oil collecting pipe 8 during welding is avoided; the follow-up transverse moving assembly 6 is matched with the welding robot 7, the follow-up transverse moving assembly 6 drives the welding robot 7 to move along the central axis of the oil collecting pipe 8, so that the welding robot 7 on the follow-up transverse moving assembly 6 can weld a plurality of cooling fins 9 on the oil collecting pipe 8 in a short arc mode, the quality of welding seams is guaranteed, after one cooling fin 9 is welded, the follow-up transverse moving assembly 6 enables the welding robot 7 to move horizontally to a next position to be welded for welding, continuous welding operation is achieved on the cooling fins 9 on the oil collecting pipe 8, the welding working efficiency is improved, the welding robot 7 can adjust the welding height, the welding angle and the welding position according to requirements, and the welding robot can be well suitable for welding work of the cooling fins 9 and the oil collecting pipe 8.
Example 3
As shown in fig. 6-8, an intelligent welding device for radiating fins of an oil immersed transformer is used for continuous welding of a plurality of radiating fins and oil collecting pipes at two ends of the radiating fins in the transformer, and the device comprises:
The main base is of a plane plate-shaped structure as a whole;
The expanding inner tube type positioning clamp is provided with a group of expanding inner tube type positioning clamps, is symmetrically arranged left and right relative to the main base, respectively stretches into the interiors of two ends of the oil collecting tube which is horizontally arranged and is used for carrying out inner expanding type supporting and positioning on the oil collecting tube, and the expanding inner tube type positioning clamp is arranged at the left and right sides of the main base by adopting telescopic extension frames of L-shaped structures;
the bearing component is used for reliably bearing the middle part of the oil collecting pipe and is longitudinally erected in the middle part of the upper surface of the main base;
The adjustable positioning assembly is used for adaptively adjusting, positioning and supporting two ends of the oil collecting pipe with the diameters of multiple specifications, is provided with a group and is symmetrically arranged on the upper surface of the main base in a left-right mode relative to the supporting assembly;
the follow-up transverse moving assembly is transversely arranged in front of the upper part of the main base, and the long side and the short side of the horizontal part of the follow-up transverse moving assembly correspond to the long side and the short side of the horizontal part of the main base respectively;
And the welding robot is arranged on the upper surface of the follow-up transverse moving assembly and is driven by the follow-up transverse moving assembly to transversely position and move along the long side direction of the horizontal part of the main base.
The follow-up transverse moving assembly 6 comprises a U-shaped plate 61 positioned on the upper surface of the main base 1, a lead screw 62 is arranged above the U-shaped plate 61, a sliding cover 64 is connected to the lead screw 62 in a threaded fit manner, one end of the lead screw 62 penetrating through the U-shaped plate 61 is in power connection with an RF37-32.4-Y271-4-M1-B-F120 helical gear motor 63, and polished rods 65 are arranged on the front side and the rear side of the interior of the sliding cover 64.
In this embodiment, the sliding cover of the follow-up sideslip assembly is matched with the lead screw and the polished rod, so that the sliding cover is positioned and sideslip on the lead screw under the action of the bevel gear motor, and the welding robot 6 on the sliding cover moves to the position where the next part needs to be welded, thereby being beneficial to the continuous welding operation of the welding robot on the radiating fin and the oil collecting pipe.
The welding robot 7 comprises a welding base 71 positioned on the upper surface of the sliding cover 64, a control box 72 is arranged above the welding base 71, a longitudinal drag chain sliding rail moving assembly 73 is arranged on the upper surface of the control box 72, a transverse drag chain sliding rail moving assembly 74 is arranged on the longitudinal drag chain sliding rail moving assembly 73 along the vertical direction of the longitudinal drag chain sliding rail moving assembly, and a welding assembly is arranged on one side of the lower surface of the transverse drag chain sliding rail moving assembly 74.
In the embodiment, the welding assembly of the welding robot is fixedly connected with the lower surface of the transverse drag chain sliding rail moving assembly, so that the position of the transverse drag chain sliding rail moving assembly relative to the longitudinal drag chain sliding rail moving assembly can be adjusted according to actual conditions, the welding assembly can be applicable to various oil collecting pipe specifications, can rapidly extend to the position to be welded to enable the welding assembly to be more adhered to the welding track of the radiating fin, can enable the position of the welding assembly to be retracted after the welding of the current welding position is completed, then the welding robot moves to the position to be welded at the next position under the action of the follow-up transverse moving assembly, the welding assembly is adjusted again to enable the welding assembly to extend to the position to be welded for welding operation, and after the welding is completed, the operation is repeated, so that the welding operation of a plurality of radiating fins and the oil collecting pipes can be completed, and continuous welding operation of the welding robot is facilitated;
Because the transverse drag chain sliding rail moving assembly is arranged on the vertical direction of the longitudinal drag chain sliding rail moving assembly, the height position of the welding component can be adjusted through the longitudinal drag chain sliding rail moving assembly, so that the welding component can be better attached to the position to be welded, the welding quality is ensured, and the defect of a welding machine is avoided.
The welding assembly comprises a swinging rod 75, the upper end of the swinging rod 75 is movably connected with the lower surface of the transverse drag chain sliding rail moving assembly 74 through a swinging shaft 77, a welding gun 76 is arranged at the lower end of the swinging rod, and the welding gun 76 is movably connected with the lower end of the swinging rod 75 through a first rotator 78 and a second rotator 79 which are mutually perpendicular to each other through rotation axes.
In the embodiment, the welding gun of the welding assembly is movably connected with the lower end of the swinging rod through the first rotator and the second rotator which are arranged in the way that the rotation axes are mutually perpendicular, the upper end of the swinging rod is movably connected with the lower surface of the transverse drag chain sliding rail moving assembly through the swinging shaft, therefore, the welding gun can rotate along the vertical axis by using the first rotator and can perform autorotation adjustment on the welding gun, the orientation of the welding gun can be adjusted, the welding gun and the first rotator can integrally rotate along the horizontal axis by using the second rotator, and therefore the welding gun can rotate along the axis of the lower end of the swinging rod and can be matched with the movable connecting structure of the upper end of the swinging rod, the welding track of the welding gun is more attached to the welding track of the radiating fin on the oil collecting pipe, the welding quality is ensured, and the defect of the welding machine is avoided.
The welding assembly can be connected with the lower surface of the transverse drag chain sliding rail moving assembly through the rotary assembly, so that the welding gun can be better attached to the welding track of the radiating fin on the oil collecting pipe, the rotary assembly comprises a mounting plate connected with the lower surface of the transverse drag chain sliding rail moving assembly, supports are arranged on two sides below the mounting plate in a downward extending mode, arc plates are arranged in the supports, tooth grooves are arranged above the arc plates, limiting blocks are arranged on two ends of the arc plates, driving gears are installed on the upper portions of the tooth grooves in a meshed mode, the driving gears are connected with horizontal type speed reducing motors in a power mode, follow-up gears meshed with the tooth grooves are arranged above the inner portions of the supports, side guide wheels in rolling connection with end walls on two sides of the lower surface of the arc plates are arranged below the follow-up gears, on one hand, the set of the follow-up gears are matched with the driving gears to serve as driving force for driving the arc plates, sufficient power is guaranteed, on the other hand, the support and the side guide wheels are matched with the side guide wheels to play a role in guiding limiting, and reliable movement of the arc plates is guaranteed.
According to the technical scheme, the welding assembly extends into the position to be welded of the radiating fin and the oil collecting pipe by using the transverse drag chain sliding rail moving assembly, the height position of the welding assembly is adjusted by using the longitudinal drag chain sliding rail moving assembly, so that the center point of the rotating assembly coincides with the center point of the oil collecting pipe at the position to be welded, namely, the rotating assembly is positioned outside the circular tangent plane of the oil collecting pipe at the position, the direction of the welding gun is adjusted by using the first rotator, the welding operation is facilitated, the speed reducing motor is started, the speed reducing motor drives the arc plate to rotate around the center point of the circular tangent plane of the oil collecting pipe by the cooperation of the driving gear and the tooth socket, so that the welding gun is driven to rotate, the rotating assembly is matched with the welding assembly, the welding assembly is driven to rotate in an arc manner by the rotating assembly, the radiating fin on the oil collecting pipe can rotate in an arc manner, the welding gun can rotate along the horizontal axis of course, the welding gun can rotate along the axis of the second rotator, the lower end axis of the swinging rod rotates, the welding gun is matched with the movable connecting structure at the upper end of the swinging rod, the welding quality of the welding joint is guaranteed, and the welding quality of the welding seam is guaranteed.
As an alternative specific implementation mode of the rotary assembly, the tooth grooves can be replaced by double rows of chains, the limiting blocks can be replaced by chain locking blocks, one end of the chain is fixedly connected with the corresponding chain locking blocks, and the other end of the chain penetrates through the corresponding chain locking blocks and then is connected with a chain tensioning block arranged at the lower end of the chain locking blocks, so that tensioning of the double rows of chains is ensured; the driving gear and the follow-up gear can be replaced by a driving double sprocket and a follow-up double sprocket which are matched with double rows of chains, the arc plate is driven to move through the driving action of the driving double sprocket and the follow-up double sprocket, the side guide wheels adopt concave guide wheels or convex edge guide wheels for further improving the reliability of the movement of the arc plate, two side end faces of the inner side circumferential face of the arc plate are arranged to be outer convex edge strips or inner grooves and are matched with the concave guide wheels and the convex edge guide wheels respectively, the arc plate is ensured to move along the moving track of the arc plate, the problems of inclination, clamping and the like are avoided, and the upper end of a swinging rod of the welding assembly is arranged on the middle end face of the inner side circumferential face of the arc plate and is prevented from interfering with the matched movement of the side guide wheels and the arc plate.
In actual use, to the fixed of fin, can adopt a plurality of cardboard subassemblies, for example cardboard subassembly is two vertical boards to constitute (or one of them is U template, another is can constitute along the riser of U template displacement and other structures), and two vertical boards adopt horizontal drive arrangement (horizontal drive arrangement can adopt slide rail assembly, rack and pinion subassembly, cylinder subassembly, linear electric motor subassembly, the structure that other same can realize corresponding functions such as linear screw rod/lead screw subassembly) to realize being close to each other or keep away from, thereby utilize a plurality of cardboard subassemblies to carry out equidistant clamping to a plurality of heating panels, and a plurality of cardboard subassemblies and bearing subassembly, adjustable location subassembly etc. joint cooperation use from top to bottom, equidistant vertical range joint of a plurality of fin is fixed on collecting pipe, the fin of being convenient for welding robot equidistant range and its both sides collecting pipe weld, need not the manual work and support the fin, but also can avoid the fin dislocation or the tilting of collecting pipe during the welding.
Of course, other structures capable of implementing the corresponding functions may also be adopted, and will not be described herein.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.

Claims (10)

1.一种油浸式变压器散热片智能焊接装置，用于变压器中多个散热片与其两端集油管的连续焊接，其特征在于：所述装置包括：1. An intelligent welding device for oil-immersed transformer heat sinks, used for continuous welding of multiple heat sinks and their two end oil collection pipes in a transformer, characterized in that: the device comprises: 主基座，整体为平面板形结构；The main base is a planar plate structure. 扩张内管式定位夹具，其设置有一组，且关于主基座左右对称设置，分别伸入水平设置的集油管两端内部，用于对其进行内涨式支撑定位，所述扩张内管式定位夹具采用“L”形结构的伸缩延长架设置在主基座左右两侧；An expansion inner tube positioning fixture is provided in a set, which is symmetrically arranged about the left and right sides of the main base. It extends into the two ends of the horizontally arranged oil collecting pipe for internal expansion support and positioning. The expansion inner tube positioning fixture adopts an "L" shaped telescopic extension frame arranged on the left and right sides of the main base. 承托组件，用于对集油管中部进行可靠承托，所述承托组件纵向架设于主基座上表面中部；A support assembly is used to reliably support the middle part of the oil gathering pipe. The support assembly is longitudinally mounted on the middle part of the upper surface of the main base. 可调定位组件，用于对多规格直径的集油管两端进行适应性调节定位承托，所述可调定位组件设置有一组，且关于承托组件呈左右对称式的安装在主基座上表面；An adjustable positioning component is used to adaptively adjust and position the two ends of oil collection pipes of various diameters. A set of the adjustable positioning components is provided and is installed on the upper surface of the main base in a left-right symmetrical manner with respect to the support component. 随动横移组件，其横向设置于主基座上方前面，且所述随动横移组件的水平部长、短边与主基座的水平部长、短边分别对应；The follower transverse movement component is horizontally positioned above and in front of the main base, and the horizontal length and short side of the follower transverse movement component correspond to the horizontal length and short side of the main base, respectively. 焊接机器人，其设置于随动横移组件上表面，且所述焊接机器人通过随动横移组件带动而沿着主基座的水平部长边方向横向定位移动。A welding robot is mounted on the upper surface of a follower lateral movement assembly, and the welding robot is moved laterally along the horizontal long side of the main base by the follower lateral movement assembly. 2.如权利要求1所述的一种油浸式变压器散热片智能焊接装置，其特征在于：所述扩张内管式定位夹具包括驱动器，所述驱动器输出端连接有螺杆，所述螺杆上下部分别配合连接有短螺套杆十字关节总成和长螺套杆十字关节总成，所述长螺套杆十字关节总成端部安装有圆形结构的导向盘。2. The intelligent welding device for oil-immersed transformer heat sinks as described in claim 1, characterized in that: the expanded inner tube positioning fixture includes a driver, the output end of the driver is connected to a screw, the upper and lower parts of the screw are respectively connected to a short screw sleeve rod cross joint assembly and a long screw sleeve rod cross joint assembly, and a circular guide plate is installed at the end of the long screw sleeve rod cross joint assembly. 3.如权利要求2所述的一种油浸式变压器散热片智能焊接装置，其特征在于：所述扩张内管式定位夹具还包括多个呈“X”形结构的交叉式扩张架，所述交叉式扩张架下部两端分别与短螺套杆十字关节总成、长螺套杆十字关节总成活动连接，所述交叉式扩张架上部的其中一端活动连接有横板、另一端与设置在横板内部的横槽滑动连接。3. The intelligent welding device for oil-immersed transformer heat sinks as described in claim 2, characterized in that: the expansion inner tube positioning fixture further includes multiple cross expansion frames with an "X" shaped structure, the lower two ends of the cross expansion frame are respectively movably connected to the short threaded rod cross joint assembly and the long threaded rod cross joint assembly, one end of the upper part of the cross expansion frame is movably connected to a horizontal plate, and the other end is slidably connected to a horizontal groove provided inside the horizontal plate. 4.如权利要求1所述的一种油浸式变压器散热片智能焊接装置，其特征在于：所述承托组件包括设置在主基座上表面的旋转台，所述旋转台上方设置有液压缸，所述液压缸顶部输出端安装有承托板，所述承托板为弧形机构，且该承托板内弧度与集油管外弧度相同，所述承托板下表面两侧均通过导杆与液压缸的顶板纵向活动导向连接。4. The intelligent welding device for oil-immersed transformer heat sinks as described in claim 1, characterized in that: the support assembly includes a rotating platform disposed on the upper surface of the main base, a hydraulic cylinder is disposed above the rotating platform, a support plate is installed at the top output end of the hydraulic cylinder, the support plate is an arc-shaped mechanism, and the inner arc of the support plate is the same as the outer arc of the oil collecting pipe, and both sides of the lower surface of the support plate are longitudinally and movably guided to the top plate of the hydraulic cylinder through guide rods. 5.如权利要求4所述的一种油浸式变压器散热片智能焊接装置，其特征在于：所述可调定位组件位于承托组件两侧，所述可调定位组件包括可调定位架，所述可调定位架底部面水平对称设置有一组滑座，所述滑座分别与位于主基座上表面的一组滑轨滑动连接，所述滑轨下表面通过多个“几”字形结构的支撑架安装在主基座上。5. The intelligent welding device for oil-immersed transformer heat sinks as described in claim 4, characterized in that: the adjustable positioning component is located on both sides of the support component, the adjustable positioning component includes an adjustable positioning frame, a set of sliding seats are horizontally and symmetrically arranged on the bottom surface of the adjustable positioning frame, the sliding seats are slidably connected to a set of slide rails located on the upper surface of the main base, and the lower surface of the slide rails is mounted on the main base through multiple "几"-shaped support frames. 6.如权利要求5所述的一种油浸式变压器散热片智能焊接装置，其特征在于：所述可调定位架包括工型架，所述工型架中部上方设置有用于承托集油管底部表面的定位托辊，所述定位托辊外侧面上安装有用于卡接定位集油管侧面端的定位侧盘，所述定位托辊两端均通过BTD-605-2Z-15-B-MTC-5型T型高度指定型轴承座组件安装在工型架上。6. The intelligent welding device for oil-immersed transformer heat sinks as described in claim 5, characterized in that: the adjustable positioning frame includes an I-beam frame, a positioning roller for supporting the bottom surface of the oil collecting pipe is provided above the middle part of the I-beam frame, a positioning side plate for engaging the side end of the positioning oil collecting pipe is installed on the outer side of the positioning roller, and both ends of the positioning roller are mounted on the I-beam frame through a BTD-605-2Z-15-B-MTC-5 type T-type height specified bearing seat assembly. 7.如权利要求6所述的一种油浸式变压器散热片智能焊接装置，其特征在于：所述工型架上水平板内部两侧均设置有滑槽，所述滑槽内部均活动安装有移动杆，所述移动杆正上方均设置有定位夹杆，所述移动杆中部通过支撑板、两端均通过端板与相应的定位夹杆连接，所述移动杆一端的端板上均安装有丝座，所述丝座内部设置有双向丝杠，所述双向丝杠中部与位于工型架前面的轴承板活动连接，所述双向丝杠一端安装有手轮。7. The intelligent welding device for oil-immersed transformer heat sinks as described in claim 6, characterized in that: both sides of the horizontal plate on the I-beam frame are provided with sliding grooves, and a moving rod is movably installed inside each sliding groove. A positioning clamp is provided directly above each moving rod. The middle part of the moving rod is connected to the corresponding positioning clamp via a support plate, and both ends are connected to the corresponding positioning clamp via end plates. A screw seat is installed on the end plate at one end of the moving rod. A bidirectional screw is provided inside the screw seat. The middle part of the bidirectional screw is movably connected to a bearing plate located in front of the I-beam frame. A handwheel is installed at one end of the bidirectional screw. 8.如权利要求1所述的一种油浸式变压器散热片智能焊接装置，其特征在于：所述随动横移组件包括位于主基座上表面的U型板，所述U型板上方设置有导螺杆，所述导螺杆上螺纹配合连接有滑盖，且所述导螺杆贯穿U型板的一端与RF37-32.4-Y271-4-M1-B-F120型斜齿轮减速电机动力连接，所述滑盖内部前后两侧均设置有光杆。8. The intelligent welding device for oil-immersed transformer heat sinks as described in claim 1, characterized in that: the follow-up transverse component includes a U-shaped plate located on the upper surface of the main base, a guide screw is provided above the U-shaped plate, a sliding cover is threadedly connected to the guide screw, and one end of the guide screw passing through the U-shaped plate is poweredly connected to an RF37-32.4-Y271-4-M1-B-F120 type helical gear reducer motor, and a smooth rod is provided on both the front and rear sides inside the sliding cover. 9.如权利要求8所述的一种油浸式变压器散热片智能焊接装置，其特征在于：所述焊接机器人包括位于滑盖上表面的焊接底座，所述焊接底座上方设置有控制箱，所述控制箱上表面设置有纵向拖链滑轨移动总成，所述纵向拖链滑轨移动总成上沿其垂直方向上安装有横向拖链滑轨移动总成，所述横向拖链滑轨移动总成下表面一侧安装有焊接组件。9. The intelligent welding device for oil-immersed transformer heat sinks as described in claim 8, characterized in that: the welding robot includes a welding base located on the upper surface of the sliding cover, a control box is provided above the welding base, a longitudinal drag chain slide rail moving assembly is provided on the upper surface of the control box, a transverse drag chain slide rail moving assembly is installed on the longitudinal drag chain slide rail moving assembly along its vertical direction, and a welding component is installed on one side of the lower surface of the transverse drag chain slide rail moving assembly. 10.如权利要求9所述的一种油浸式变压器散热片智能焊接装置，其特征在于：所述焊接组件包括摆动杆，所述摆动杆上端通过摆动轴与横向拖链滑轨移动总成下表面活动连接、下端设置有焊接枪，所述焊接枪通过旋转轴线相互垂直设置的第一旋转器、第二旋转器与摆动杆下端活动连接。10. The intelligent welding device for oil-immersed transformer heat sinks as described in claim 9, characterized in that: the welding assembly includes a swing rod, the upper end of the swing rod is movably connected to the lower surface of the transverse drag chain slide rail moving assembly via a swing shaft, and a welding gun is provided at the lower end, the welding gun being movably connected to the lower end of the swing rod via a first rotator and a second rotator whose rotation axes are perpendicular to each other.
CN202511537449.6A 2025-10-27 2025-10-27 A smart welding device for oil-immersed transformer heat sinks Pending CN121423917A (en)

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Application Number Priority Date Filing Date Title
CN202511537449.6A CN121423917A (en) 2025-10-27 2025-10-27 A smart welding device for oil-immersed transformer heat sinks

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202511537449.6A CN121423917A (en) 2025-10-27 2025-10-27 A smart welding device for oil-immersed transformer heat sinks

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CN121423917A true CN121423917A (en) 2026-01-30

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