CN116060740A - Infinite rotation type welding equipment and infinite rotation method thereof - Google Patents
Infinite rotation type welding equipment and infinite rotation method thereof Download PDFInfo
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- CN116060740A CN116060740A CN202310238499.9A CN202310238499A CN116060740A CN 116060740 A CN116060740 A CN 116060740A CN 202310238499 A CN202310238499 A CN 202310238499A CN 116060740 A CN116060740 A CN 116060740A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/16—Arc welding or cutting making use of shielding gas
- B23K9/167—Arc welding or cutting making use of shielding gas and of a non-consumable electrode
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/32—Accessories
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
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Abstract
The invention discloses infinite rotary welding equipment and an infinite rotary method of the welding equipment, wherein the welding equipment comprises an electric cabinet, an air supply box and a welding machine head, a rotary device is arranged between the welding machine head and the electric cabinet as well as between the welding machine head and the air supply box, the rotary device comprises a brush and a conducting layer which can rotate relatively, the brush is connected with the electric cabinet, and the conducting layer is connected with the welding machine head, so that a power supply cable does not generate winding when the welding equipment rotates; the turning device is fixed on the horizontal electric skateboard through the turning support, and a guide rail in the horizontal direction is arranged on the horizontal electric skateboard, so that the turning device can move along the horizontal direction of the horizontal electric skateboard. The infinite rotary welding equipment provided by the invention has the advantages that the welding quality is not influenced in the rotation process, the structure is simple, and the service life is long.
Description
Technical Field
The invention relates to infinite rotary welding equipment, and relates to the technical field of welding equipment.
Background
In the manufacturing process of the steam generator in the nuclear power field, TIG welding needs to be carried out at positions such as a manhole, an end face, an inner wall, a corner and the like, and butt-joint TIG welding of the shell of the evaporator and the safety end is also required.
Because the weight and the volume of the evaporator are limited, the evaporator product needs to be fixed during welding, and the TIG welding equipment performs automatic welding on corresponding parts, the existing welding method needs to manually drag the TIG welding equipment to perform welding, which is time-consuming and labor-consuming and easy to cause damage to the nuclear power evaporator equipment.
Especially when the evaporator pump shell is in circular seam butt joint with a safety end, an outlet connecting pipe and the like, the welding surface is in a huge ring shape, and at the moment, the TIG welding equipment needs to perform multi-wheel rotary welding by taking the axis of the ring surface as a rotating shaft, namely, a welding head performs infinite rotation so as to ensure the welding quality. The existing welding mode completely depends on manual adjustment, so that errors are large, the adjustment process is difficult, welding gun stability is poor in the rotation process, and welding position deviation is very easy to occur.
In addition, because be provided with structures such as water, gas on the welder, lead to welder weight higher, manual work is handheld welder for a long time, can lead to personnel fatigue, can't accurate stable maintenance welding quality, and when handheld welder, can't carry out effective measurement to the face of treating welding, the welding position appears the deviation easily.
For the above reasons, it is necessary to study a welding apparatus suitable for a steam generator so that a welding head can achieve high positioning accuracy and facilitate adjustment of a welding gun position in an infinite revolution process, thereby achieving a stable welding effect.
Disclosure of Invention
In order to overcome the problems, intensive research is conducted to design an infinite rotary welding device which comprises an electric cabinet, an air supply box and a welding head, a rotary device is arranged between the welding head and the electric cabinet as well as between the welding head and the air supply box,
further, the slewing device comprises an electrically conductive slip ring 1,
the conductive slip ring 1 comprises a fixed shell 11 and a conductive rotating shaft 12 which can rotate relatively,
the turning device is fixed on the horizontal electric skateboard 5 through the turning support 4, a guide rail in the horizontal direction is arranged on the horizontal electric skateboard 5, the turning device can move along the horizontal direction of the horizontal electric skateboard 5, a vertical electric skateboard 6 is fixedly arranged at the lower end of the rotating plate 31, the vertical electric skateboard 6 is provided with a guide rail in the vertical direction, a height sliding block 61 is arranged on the guide rail, and the welding machine head is connected with the height sliding block 61.
In a preferred embodiment, a welding gun, a hot wire unit and a gas filter are arranged on the welding machine head, wherein the welding gun is used for electrifying a tungsten electrode to melt welding wires for welding, the hot wire unit is used for preheating the welding wires, and the gas filter is used for spraying gas to a welding position;
the electric cabinet is provided with a plurality of power supplies, and the welding gun and the hot wire unit are connected with different kinds of power supplies.
In a preferred embodiment, a brush 13 is provided on the stationary housing 11, said brush 13 being a conductor, the brush 13 being electrically connected to the electric cabinet by means of a cable,
the conductive rotating shaft 12 is an insulator, a conductive layer 121 and a conductive column 122 are arranged on the conductive rotating shaft 12, and the conductive layer 121 and the conductive column 122 are both conductors and are electrically connected;
the conductive layer 121 is ring-shaped, is disposed perpendicular to the rotation axis of the conductive shaft 12, the conductive posts 122 are parallel to the rotation axis of the conductive shaft 12,
one end of the conductive post 122 protrudes from the surface of the conductive shaft 12, so that the conductive post 122 can be electrically connected with a welding head,
the electric brush 13 is tightly attached to the conductive layer 121, so that when the conductive rotating shaft 12 rotates, the electric brush 13 and the conductive layer 121 can still be conducted;
in a preferred embodiment, the brushes 13 have a plurality of brushes 13 distributed in a multi-layer structure, each layer having at least one brush 13, each layer of brushes 13 being electrically connected to a type of power source of the electric cabinet;
the conductive layer 121 and the conductive post 122 have a plurality of conductive layers 121 forming a multi-layered structure, each of the annular conductive layers 121 is electrically connected to only one conductive post 122, at least one conductive post 122 is connected to a welding gun, one conductive post 122 is connected to a hot wire unit,
each brush 13 is in close contact with only one conductive layer 121.
In a preferred embodiment, the turning device further comprises an annular rotating plate 31, wherein a protrusion is arranged on the rotating plate 31 so as to be fixedly connected with the conductive rotating shaft 12, and the rotating plate 31 is fixedly connected with the welding head through a connecting arm so that the rotation angle of the welding head is consistent with that of the rotating plate 31.
In a preferred embodiment, a spindle motor is provided on the horizontal electric skateboard 5, by means of which the position of the swivel device on the horizontal electric skateboard 5 is adjusted.
In a preferred embodiment, the welding head is connected with the height slider 61 through the angle adjusting unit 7, the angle adjusting unit 7 comprises a connecting rod 71 and a pull rod 72, one end of the connecting rod 71 is hinged with the height slider 61, the other end of the connecting rod is fixedly connected with the welding head, one end of the pull rod 72 is hinged at the middle section of the connecting rod 71, the other end of the pull rod is in threaded connection with the height slider 61, and the angle adjustment of the connecting rod 71 relative to the height slider 61 is realized by screwing the pull rod 72.
In a preferred embodiment, a tungsten electrode holder 81 is provided on the welding gun for holding a tungsten electrode; a wire feeding bracket 82 is provided for feeding welding wire to the welding gun, a miniature sliding plate 83 is provided at the edge of the tungsten electrode fixing frame 81,
the micro slide plate 83 includes a lateral sliding base 831 and a longitudinal sliding plate 832, wherein the lateral sliding base 831 has a lateral guide rail so that the longitudinal sliding plate 832 can move laterally relative to the lateral sliding base 831, the longitudinal sliding plate 832 has a longitudinal guide rail, and the wire feeding bracket 82 is disposed on the longitudinal guide rail so that the wire feeding bracket 82 can move longitudinally relative to the longitudinal sliding plate.
In a preferred embodiment, the lateral and longitudinal rails are provided with screws, and the amount of lateral movement of the longitudinal sliding plate 832 and the amount of longitudinal movement of the wire feeding bracket 82 are adjusted by screwing the screws.
On the other hand, the invention also provides an infinite rotation method of the welding equipment, and the electric brush 13 and the conducting layer 121 which can rotate relatively are arranged, the electric brush is connected with the electric cabinet, and the conducting layer is connected with the welding machine head, so that the power supply cable is not wound when the welding equipment rotates.
The invention has the beneficial effects that:
(1) The welding machine head can rotate infinitely, and in the rotating process, the problems of spin and mutual winding of various power supply cables, water supply pipelines and air supply pipelines can be avoided;
(2) The stability is high in the rotation process, and the welding effect is small;
(3) The rotation center can be flexibly adjusted, and the welding height and the welding angle are very high in welding arc voltage;
(4) Simple structure and long service life.
Drawings
FIG. 1 is a schematic view showing the overall structure of a conductive slip ring in an endless rotary welding apparatus according to a preferred embodiment of the present invention; FIG. 2 is a schematic view showing a sectional structure of a conductive slip ring in an endless rotary welding apparatus according to a preferred embodiment of the present invention; FIG. 3 is a schematic view showing the structure of an inner brush and a conductive layer of a conductive slip ring in an infinitely rotary welding apparatus according to a preferred embodiment of the present invention; FIG. 4 shows a schematic view of the structure of a conductive slip ring stationary housing in an endless rotary welding apparatus according to a preferred embodiment of the present invention; FIG. 5 is a schematic view showing the structure of an inner brush and a conductive layer of a conductive slip ring in an infinitely rotary welding apparatus according to a preferred embodiment of the present invention; FIG. 6 is a schematic view showing the structure of an inner brush and a conductive layer of a conductive slip ring in an infinitely rotary welding apparatus according to a preferred embodiment of the present invention; FIG. 7 shows a schematic view of the structure of a hydro-slip ring in an endless rotary welding apparatus according to a preferred embodiment of the present invention; FIG. 8 is a schematic cross-sectional view showing the structure of an outer shaft of a water vapor in a water vapor slip ring in an endless rotary welding apparatus according to a preferred embodiment of the present invention; FIG. 9 is a schematic view showing the structure of an outer shaft of a water vapor in a water vapor slip ring in an endless rotary welding apparatus according to a preferred embodiment of the present invention; FIG. 10 shows a schematic view of the internal shaft structure of a water-vapor slip ring in an endless rotary welding apparatus in accordance with a preferred embodiment of the present invention; FIG. 11 is a schematic view showing a cross-sectional structure of an inner shaft of a water-vapor slip ring in an endless rotary welding apparatus according to a preferred embodiment of the present invention; FIG. 12 is a schematic view showing a cross-sectional structure of a hydro-pneumatic slip ring in an endless rotary welding apparatus according to a preferred embodiment of the present invention; FIG. 13 shows a schematic view of the structure of a rotating plate in a hydro-slip ring in an endless rotary welding apparatus according to a preferred embodiment of the present invention; FIG. 14 shows a schematic diagram of a turning gear housing in an endless turning welding apparatus in accordance with a preferred embodiment of the present invention; FIG. 15 shows a schematic view of the structure of a horizontal electric skateboard in an endless rotary welding apparatus in accordance with a preferred embodiment of the present invention; FIG. 16 is a schematic view showing the overall structure of an endless rotary welding apparatus according to a preferred embodiment of the present invention; FIG. 17 is a schematic view showing the structure of a connection plate in an endless rotary welding apparatus according to a preferred embodiment of the present invention; FIG. 18 is a schematic view showing the structure of an angle adjusting unit in an endless rotary welding apparatus according to a preferred embodiment of the present invention; FIG. 19 is a schematic view showing the structure of an angle adjusting unit in an endless rotary welding apparatus according to a preferred embodiment of the present invention; FIG. 20 is a schematic view showing the structure of a welding gun in an endless rotary welding apparatus according to a preferred embodiment of the present invention; FIG. 21 shows a schematic view of the structure of a micro slide plate in an endless rotary welding apparatus according to a preferred embodiment of the present invention; fig. 22 shows a schematic view of a swing bracket structure in an endless swing welding apparatus according to a preferred embodiment of the present invention.
Reference numerals illustrate:
1-an electrically conductive slip ring; 11-a fixed shell; 12-a conductive rotating shaft; 13-brushes; 14-a bearing; 15-a conductive roller; 111-a shell cover body; 112-a shell base; 121-a conductive layer; 122-conductive pillars; 131-brush core; 132-brush holder; 151-flanges; 2-water-gas slip rings; 21-a water-air inner shaft; 22-a hydro-pneumatic outer shaft; 23-grooves; 211-water gas outlet; 221-water gas inlet; 3-a middle section adjusting mechanism; 31-rotating plate; 32-an electric motor; 33-a slewing device housing; 4-a rotary bracket; 5-a horizontal electric skateboard; 6-a vertical electric skateboard; 7-an angle adjustment unit; 61-height slide; 62-connecting plates; 71-connecting rod; 72-a pull rod; 81-tungsten electrode fixing frame; 82-wire feeding support; 83-miniature skateboards; 711-connecting plate; 831-a lateral sliding base; 832-longitudinal sliding plate.
Detailed Description
The invention is further described in detail below by means of the figures and examples. The features and advantages of the present invention will become more apparent from the description.
The word "exemplary" is used herein to mean "serving as an example, embodiment, or illustration. Any embodiment described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments. Although various aspects of the embodiments are illustrated in the accompanying drawings, the drawings are not necessarily drawn to scale unless specifically indicated.
The invention provides infinite rotary welding equipment, which comprises an electric cabinet and a welding head, wherein the electric cabinet is connected with the welding head through a power supply cable,
a conductive slip ring 1 is arranged on the power supply cable, the conductive slip ring 1 comprises a fixed shell 11 and a conductive rotating shaft 12 which can rotate relatively, as shown in figure 1,
further, the fixing shell 11 is an insulator, the fixing shell 11 is provided with an electric brush 13, the electric brush 13 is a conductor, the electric brush 13 is electrically connected with the electric cabinet through a cable, the conductive rotating shaft 12 is an insulator, the conductive rotating shaft 12 is provided with a conductive layer 121 and a conductive column 122, and the conductive layer 121 and the conductive column 122 are conductors;
the conductive layer 121 is ring-shaped, is disposed perpendicular to the rotation axis of the conductive shaft 12, and the conductive posts 122 are parallel to the rotation axis of the conductive shaft 12, as shown in fig. 2,
the conductive post 122 is electrically connected to the welding head,
the brush 13 is closely attached to the conductive layer 121, so that when the conductive rotating shaft 12 rotates, the brush 13 and the conductive layer 121 can still be conducted.
According to the invention, the problem of power supply cable rotation winding is solved by the rotation of the conductive rotating shaft 12 relative to the electric brush 13 in the welding process of the welding equipment rotation welding.
The water-gas slip ring 2 comprises a water-gas inner shaft 21 and a water-gas outer shaft 22, the water-gas outer shaft 22 is sleeved on the water-gas inner shaft 21, as shown in fig. 7, so that the water-gas outer shaft 22 can rotate relative to the water-gas inner shaft 21, an annular groove 23 is arranged on the outer side surface of the water-gas inner shaft 21 or the inner side surface of the water-gas outer shaft 22, as shown in fig. 9, the cross section view thereof is shown in fig. 8,
the inner shaft 21 is columnar or annular, a water gas outlet 211 is arranged in the inner shaft 21, one end surface of the water gas outlet 211 is arranged on the lower surface of the inner shaft 21, so that the water gas outlet 211 can be connected with a welding machine head through a pipeline, as shown in fig. 10, and the cross section thereof is shown in fig. 11
The outer steam shaft 22 is annular, a steam inlet 221 is arranged in the outer steam shaft 22, and one end surface of the steam inlet 221 is arranged on the upper surface of the outer steam shaft 22, so that the steam inlet 221 can be connected with the air supply box through a pipeline, as shown in fig. 8 and 9;
the other end face of the water-air inlet channel 221 is disposed on the inner side face of the water-air outer shaft and corresponds to the position of the groove 23, the other end face of the water-air outlet channel 211 is disposed on the side face of the water-air inner shaft 21 and corresponds to the position of the groove 23, so that the water-air channel formed by the water-air inlet channel 221, the groove 23 and the water-air outlet channel 211 can be always conducted when the water-air inner shaft 21 and the water-air outer shaft 22 relatively rotate, as shown in fig. 12.
According to the present invention, the problem of rotational winding of the air supply or water supply pipe is solved by the rotation of the inner water-air shaft 21 and the outer water-air shaft 22 during the rotational welding of the welding apparatus.
In a preferred embodiment, the edges of the grooves 23 are provided with seals to ensure that moisture in the grooves 23 does not leak during rotation. In a preferred embodiment, a welding gun, a hot wire unit and a gas filter are arranged on the welding machine head, wherein the welding gun is used for electrifying a tungsten electrode to melt welding wires for welding, the hot wire unit is used for preheating the welding wires, and the gas filter is used for spraying gas to a welding position;
the electric cabinet is provided with a plurality of power supplies, and the welding gun and the hot wire unit are connected with different kinds of power supplies. Still preferably, the welding machine head is further provided with auxiliary welding components such as a camera and an illuminating lamp, and the electric cabinet is provided with a power supply of the auxiliary welding components such as the camera and the illuminating lamp.
Further preferably, the plurality of brushes 13 are distributed in a multi-layer structure, each layer has at least one brush 13, and each layer of brushes 13 is electrically connected with one type of power supply of the electric cabinet;
the conductive layer 121 and the conductive post 122 have a plurality, the plurality of conductive layers 121 form a multi-layered structure, each annular conductive layer 121 is electrically connected to only one conductive post 122,
each brush 13 is in close contact with only one conductive layer 121. According to the present invention, since each annular conductive layer 121 is electrically connected to only one conductive post 122, separate transfer of different kinds of power is achieved.
Further, in the present invention, the specific implementation method of electrically connecting each annular conductive layer 121 with only one conductive post 122 is not limited, and those skilled in the art can implement the implementation according to actual needs, for example, an insulating sleeve is sleeved outside the conductive post 122, so that electrical conduction will not occur when the conductive post 122 contacts with other conductive layers 121 without electrical connection.
According to a preferred embodiment of the present invention, pin holes are provided at the inner side of the conductive layer 121 and at the corresponding positions of the conductive rotating shaft 12 to fix the two through the pins.
Although the conductive layer 121 and the conductive shaft 12 may be fixed together by the conductive post 122, a large radial force is generated due to the continuous friction between the conductive layer and the brush, and the radial force is finally applied to the connection position between the conductive post 122 and the conductive layer 121, so that the connection strength between the conductive post 122 and the conductive layer 121 is reduced, resulting in a reduction in the service life of the device. In the invention, the pin shaft is arranged to fix the conductive layer 121 and the conductive rotating shaft 12, so that damage of radial force to the connection position of the conductive column 122 and the conductive layer 121 can be greatly reduced.
According to the invention, the infinite rotary welding equipment is used for welding the steam generator in the nuclear power field, and the steam generator has extremely high welding quality requirements, so that the welding equipment cannot be required to have large shaking during rotary welding, namely the conductive slip ring is required to rotate smoothly, and the phenomena of rotary clamping, conductive rotating shaft shaking and the like cannot occur.
In a preferred embodiment, each layer of brushes 13 has four brushes 13, and the four brushes 13 are uniformly distributed in the circumferential direction of the conductive layer 121, so that the conductive layer 121 is uniformly stressed, and the conductive shaft 12 is prevented from shaking due to the eccentric wear phenomenon of the conductive layer 121. According to a preferred embodiment of the present invention, as shown in fig. 3, the brush 13 includes a brush holder 132 fixedly coupled to the fixed housing 11, and a brush core 131 mounted inside the brush holder 132,
the brush holder 132 is a box body,
one end of the brush core 131 is a cambered surface, so that the brush core can be attached to the side surface of the annular conductive layer 121.
In order to improve the smoothness of the conductive slip ring, reduce the problems of rotational jamming and rotational vibration, in a preferred embodiment, a plurality of columnar conductive rollers 15 are further disposed between the brush 13 and the conductive layer 121, as shown in fig. 5.
The brush core 131 is directly used to contact with the annular conductive layer 121, so that after long-term use, the brush core 131 is easy to be eccentric-worn, the annular conductive layer 121 is unevenly stressed, the annular conductive layer 121 is abnormally worn, and the problems of rotation clamping and vibration are extremely easy to occur. In the invention, by arranging the columnar conductive roller 15, the sliding friction between the brush 13 and the conductive layer 121 is changed into rolling friction, so that the wear rate is greatly reduced, and the rotating smoothness of the conductive slip ring is improved.
In one embodiment, the upper and lower ends and sides of the conductive roller 15 are provided with ribs 151, and the ribs 151 are fixed to the brush 13 for fixing the conductive roller 15 to the brush 13.
In a more preferred embodiment, as shown in fig. 6, the conductive rollers 15 are uniformly arranged in the circumferential direction of the annular conductive layer 121, and ribs 151 are provided at the upper and lower ends of the conductive rollers 15, and the conductive rollers 15 are fixed to the annular conductive layer 121 by the ribs 151. Because the conductive roller 15 is not fixed with one of the brushes 13 any more, that is, all the conductive rollers 15 are shared by the plurality of brushes 13, the problem of shaking when the conductive slip ring rotates due to the fact that one conductive roller 15 is worn greatly can be avoided. In a preferred embodiment, a spring is provided between the brush holder 132 and the brush core 131, and the brush core 131 is pressed against the conductive layer 121 by the spring to press the brush core 131.
In a preferred embodiment, the brush holder 132 is a square box body, so that the brush holder 132 can be sleeved on the brush core 131, and the brush holder 132 of the square box body plays a guiding role, so that the brush core 131 can only move towards the radial direction of the annular conductive layer 121, thereby avoiding shaking of the brush core 131 and reducing the eccentric wear probability of the brush core 131.
Further, the brush holder 132 is a conductor, and a cable connected to the electric cabinet is fixed to the brush holder 132.
Fixing the cable on the brush holder 132 avoids unstable power supply caused by the fact that the brush core 131 is not tightly combined with the conductive layer 121 or the conductive roller 15 due to shaking of the cable compared with the fact that the cable is directly connected with the brush core 131. According to a preferred embodiment of the present invention, an insulating pad is provided between the plurality of conductive layers 121 to ensure that the plurality of power sources do not communicate with each other.
According to a preferred embodiment of the present invention, the fixed housing 11 includes a housing cover 111 and a housing base 112 that can be snapped together,
the cover 111 has a plurality of hollow parts for allowing the brush 13 to pass through, the base 112 is a flat plate, and has a through hole in the middle for allowing the conductive column 122 to leak out, as shown in fig. 4,
further preferably, the brush holder 132 is fixed to the housing base 112. Because the shell cover 111 has more hollow areas, the whole mechanical strength of the shell cover 111 is insufficient, and although the brush frame 132 is close to the shell cover 111, the brush frame 132 is directly and conveniently fixed on the shell cover 111, when the brush frame 132 is directly fixed on the shell cover 111, the shell cover 111 is easy to deform, the service life is influenced, and based on the deformation, the brush frame is fixed on the shell base 112, so that the mechanical strength of the device is enhanced.
According to a preferred embodiment of the present invention, a bearing 14 is provided at a position where the conductive rotating shaft 12 contacts the stationary housing 11, as shown in fig. 2.
In a preferred embodiment, the welding apparatus further comprises:
a cooling water tank for supplying cooling water,
the welding gun cold water unit is arranged on the welding machine head and used for cooling the welding gun body;
preferably, the grooves 23 are plural, as shown in fig. 8 and 12, the grooves 23 are arranged in parallel along the axial direction of the water-gas slip ring, the water-gas inlet channel 221 and the water-gas outlet channel 211 correspond to the number of grooves,
the groove depths of the different grooves 23 are different, so that one water gas inlet channel 221 or one water gas outlet channel 211 is connected with only one groove 23, and the water gas channels corresponding to the different grooves 23 are not communicated with each other.
Further, at least one water inlet channel 221 is connected to the cooling water tank, and a corresponding water outlet channel 211 is connected to the torch cold water unit.
The arrangement enables the water-gas slip ring 2 to simultaneously realize continuous water supply and gas supply of a plurality of waterways and a plurality of gas paths in the rotary welding process of the welding equipment. According to a preferred embodiment of the present invention, the water vapor outer shaft 22 is fixedly connected to the fixed housing 11, and the conductive rotating shaft 12 rotates in synchronization with the water vapor inner shaft 21.
By the arrangement, in the rotation process, the cables and the water and gas pipelines cannot be intertwined.
Further preferably, the turning device further comprises an annular rotating plate 31, and protrusions are provided on the rotating plate 31 so that they can be fixedly connected with the conductive rotating shaft 12 and the inner water-air shaft 21, respectively, as shown in fig. 13.
Although the conductive rotating shaft 12 and the water-air inner shaft 21 can be directly and fixedly connected together, for example, the water-air inner shaft 21 is fixedly connected to the shaft center of the conductive rotating shaft 12, the fixing mode is poor in safety, electric leakage accidents are easy to occur when the water-air slip ring leaks water, and the water-air inner shaft 21 is eccentric after long-term use, so that the contact tightness between the water-air inner shaft 21 and the water-air outer shaft 22 is reduced, and the service life of the device is prolonged.
In the present invention, the above problems can be simply and effectively solved by connecting the conductive rotating shaft 12 and the inner water-air shaft 21 through the annular rotating plate 31.
Further preferably, the rotating plate 31 is fixedly connected with the welding head through a connecting arm, so that the rotation angle of the welding head is consistent with that of the rotating plate 31.
Further preferably, the swing device further includes a motor 32, the motor 32 is connected to a side surface of the rotating plate 31 through a gear, and a rotation angle of the rotating plate 31 is controlled by the motor.
The arrangement of the motor realizes the automatic welding of the welding equipment, and the welding equipment can realize the stable annular welding according to the established process by only setting the welding process and rotating the motor.
In a preferred embodiment, the device further comprises a turning device housing 33, and the conductive slip ring 1 and the water vapor slip ring 2 are arranged in the turning device housing 33 to play a role in protecting against dangerous situations such as electric shock.
Further, a through hole is provided in the rotator housing 33 for passing a cable, a water pipe, and an air pipe therethrough, as shown in fig. 14.
Although the free rotation of the welding equipment can be realized through the rotating device, the welding quality is still difficult to ensure when the shell of the evaporator is welded with the safety end, the outlet connecting pipe and the like, and the welding quality is easy to shake due to the welding gun during welding, and the axis of the welding annular track is difficult to coincide with the axes of the safety end, the outlet connecting pipe and the like.
In the invention, the slewing device is fixed on the horizontal electric skateboard 5 through the slewing bracket 4, and a horizontal guide rail is arranged on the horizontal electric skateboard 5, so that the slewing device can move along the horizontal direction of the horizontal electric skateboard 5, and the slewing center is conveniently positioned on the welding axis of the equipment to be welded, as shown in fig. 15.
In the present invention, the specific structure of the slewing bracket 4 is not limited as long as the slewing bracket can be fixed, and for example, a bracket as shown in fig. 22 is used.
Further, welding equipment still includes the hoist, horizontal electric skateboard 5 is fixed on the crane's crane boom, because welding equipment weight is heavier, and the volume is great, fixes it on the hoist, is convenient for adjust the welding position, and guarantees welded stability.
In a preferred embodiment, a spindle motor is provided on the horizontal electric slide 5, by means of which the position of the swivel device on the horizontal electric slide 5 is adjusted.
Preferably, the number of the horizontal electric skateboards 5 is plural, for example, two, and only one horizontal electric skateboard is used to easily cause the shaking of the welding apparatus due to the heavy weight of the welding apparatus, the use of plural horizontal electric skateboards is advantageous for stability at the time of welding, as shown in fig. 16,
further, a vertical electric skateboard 6 is fixedly provided at the lower end of the rotating plate 31, the vertical electric skateboard 6 has a guide rail in a vertical direction, a height slider 61 is provided on the guide rail, and the welding head is connected with the height slider 61. Preferably, the rotating plate 31 is connected with the electric skateboard 6 through a middle section adjusting mechanism 3, and the middle section adjusting mechanism 3 can control the vertical electric skateboard 6 and devices on the vertical electric skateboard 6 to slide back and forth, so as to control the tungsten electrode position. The bottom of the middle section adjusting mechanism 3 is provided with a screw rod and a sliding groove, power is provided for the reciprocating movement of the vertical electric sliding plate 6 through the screw rod, and limit is provided for the reciprocating movement of the vertical electric sliding plate 6 through the sliding groove.
In the present invention, the adjustment of the height of the welding head is achieved by the vertical electric skateboard 6 so that the welding gun can reach the welding position.
Further preferably, the vertical electric skateboard 6 is provided with a screw motor by which the adjustment of the height of the welding head is achieved.
Because the vertical electric skateboard 6 is arranged in the vertical direction, the horizontal area is limited, and after being directly connected with the rotating plate 31, the structure is unstable easily due to the small connecting area, and welding shake and other phenomena occur.
In a preferred embodiment, the vertical electric skateboard 6 is fixedly connected with the rotating plate 31 through the connecting plate 62, the connecting area of the vertical electric skateboard 6 and the rotating plate 31 is increased through the connecting plate 62, and the overall stability of the welding equipment is improved.
More preferably, in order to reduce the overall quality of the welding apparatus, the connecting plate 62 has a hollow in the middle, as shown in fig. 17.
According to the invention, the welding head is connected with the height slider 61 through the angle adjusting unit 7, the angle adjusting unit 7 comprises a connecting rod 71 and a pull rod 72, one end of the connecting rod 71 is hinged with the height slider 61, the other end of the connecting rod is fixedly connected with the welding head, one end of the pull rod 72 is hinged at the middle section of the connecting rod 71, the other end of the pull rod is in threaded connection with the height slider 61, and the angle adjustment of the connecting rod 71 relative to the height slider 61 is realized by screwing the pull rod 72.
The angle adjusting unit is arranged, so that the welding machine head can freely adjust the welding angle, and the welding quality is ensured.
When the height slider 61 and the welding head are connected by only one link 71, the amount of shake of the welding head is large, and it is difficult to stabilize the shake by the tie rod 72, and in the present invention, the link 71 has at least two.
Further, while the angle adjustment is achieved by hinging the pull rod 72 to the middle section of the link 71, this approach is prone to link breakage.
In a more preferred embodiment, the connecting rods 71 have four, a connecting plate 711 is further provided at the end of the connecting rods 71, the connecting plate 711 and the four connecting rods are combined into a parallelepiped structure, only two connecting rods 71 are hinged with the height slider 61, the pull rod 72 is hinged with one end of the connecting plate 711, and the angle adjustment is achieved by screwing the pull rod 72, as shown in fig. 18 and 19.
A tungsten electrode fixing frame 81 is arranged on the welding gun and used for fixing a tungsten electrode; a wire feed mount 82 is provided for supplying welding wire to a welding gun, as shown in fig. 20.
In the welding process, fine adjustment of the position between the tungsten electrode and the welding wire is sometimes required to adjust the welding arc pressure, and according to a preferred embodiment of the present invention, a micro sliding plate 83 is disposed at the edge of the tungsten electrode fixing frame 81, and the wire feeding bracket 82 is disposed on the micro sliding plate 83, so that the distance between the welding wire and the tungsten electrode is adjusted by the micro sliding plate 83.
The micro slide plate 83 includes a lateral sliding base 831 and a longitudinal sliding plate 832, wherein the lateral sliding base 831 has a lateral guide rail so that the longitudinal sliding plate 832 can move laterally with respect to the lateral sliding base 831, the longitudinal sliding plate 832 has a longitudinal guide rail, and the wire feeding bracket 82 is disposed on the longitudinal guide rail so that the wire feeding bracket 82 can move longitudinally with respect to the longitudinal sliding plate, as shown in fig. 21.
Further preferably, the lateral guide rail and the longitudinal guide rail are provided with screws, and the lateral movement amount of the longitudinal sliding plate 832 and the longitudinal movement amount of the wire feeding bracket 82 are adjusted by screwing the screws.
The invention also provides a revolving method of the welding equipment, which is characterized in that the electric brush 13 and the conducting layer 121 which can rotate relatively are arranged, the electric brush is connected with the electric cabinet, the conducting layer is connected with the welding machine head, and the electric brush 13 and the conducting layer 121 slide and rub, so that a power supply cable does not wind when the welding equipment revolves;
by arranging the water vapor inlet channel 221 and the water vapor outlet channel 211 which can rotate relatively, the annular groove 23 is adopted to connect the water vapor inlet channel 221 and the water vapor outlet channel 211, so that the water supply pipeline and the air supply pipeline do not generate winding when the welding equipment rotates.
Preferably, by providing multiple layers of brushes 13 and multiple conductive layers 121, different types of power sources are delivered to the welding head through the different layers of brushes, conductive layers.
Preferably, a plurality of grooves 23 with different groove depths are arranged, and a corresponding number of water gas inlets 221 and water gas outlets 211 are arranged to transmit multiple paths of water and gas to the welding machine head;
preferably, the rotation center of the welding apparatus is adjusted by providing the horizontal electric skateboard 5.
Preferably, the welding height of the welding apparatus is adjusted by providing the vertical electric skateboard 6.
Preferably, the welding angle of the welding apparatus is adjusted by providing the angle adjustment unit 7.
Preferably, the welding arc voltage of the welding device is adjusted by providing a micro slide plate 83.
In the description of the present invention, it should be noted that the positional or positional relationship indicated by the terms such as "upper", "lower", "inner", "outer", "front", "rear", etc. are based on the positional or positional relationship in the operation state of the present invention, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," "fourth," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected in common; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
The invention has been described above in connection with preferred embodiments, which are, however, exemplary only and for illustrative purposes. On this basis, the invention can be subjected to various substitutions and improvements, and all fall within the protection scope of the invention.
Claims (10)
1. An infinite rotary welding device comprises an electric cabinet, an air supply box and a welding head, and is characterized in that a rotary device is arranged between the welding head and the electric cabinet as well as between the welding head and the air supply box,
the turning device comprises an electric conduction slip ring (1), the electric conduction slip ring (1) is provided with a fixed shell (11) and an electric conduction rotating shaft (12) which can rotate relatively,
the rotary device is fixed on the horizontal electric skateboard (5) through a rotary support (4), and a guide rail in the horizontal direction is arranged on the horizontal electric skateboard (5) so that the rotary device can move along the horizontal direction of the horizontal electric skateboard (5);
the lower end of the rotating plate (31) is fixedly provided with a vertical electric sliding plate (6), the vertical electric sliding plate (6) is provided with a guide rail in the vertical direction, a height sliding block (61) is arranged on the guide rail, and the welding machine head is connected with the height sliding block (61).
2. The endless rotary welding apparatus according to claim 1, wherein,
the welding machine head is provided with a welding gun, a hot wire unit and a gas filter, wherein the welding gun is used for electrifying a tungsten electrode so as to melt welding wires for welding, the hot wire unit is used for preheating the welding wires, and the gas filter is used for spraying gas to a welding position;
the electric cabinet is provided with a plurality of power supplies, and the welding gun and the hot wire unit are connected with different kinds of power supplies.
3. The endless rotary welding apparatus according to claim 1, wherein,
a screw motor is arranged on the horizontal electric slide plate (5), and the position of the turning device on the horizontal electric slide plate (5) is adjusted through the screw motor.
4. The endless rotary welding apparatus according to claim 1, wherein,
the welding machine head is connected with the height sliding block (61) through the angle adjusting unit (7), the angle adjusting unit (7) comprises a connecting rod (71) and a pull rod (72), one end of the connecting rod (71) is hinged with the height sliding block (61), the other end of the connecting rod is fixedly connected with the welding machine head, one end of the pull rod (72) is hinged to the middle section of the connecting rod (71), the other end of the pull rod is in threaded connection with the height sliding block (61), and the angle of the connecting rod (71) relative to the height sliding block (61) is adjusted by screwing the pull rod (72).
5. The endless rotary welding apparatus according to claim 1, wherein,
a tungsten electrode fixing frame (81) is arranged on the welding gun and used for fixing a tungsten electrode; a wire feeding bracket (82) is arranged for providing welding wires for a welding gun, a miniature sliding plate (83) is arranged at the edge of the tungsten electrode fixing frame (81),
the miniature sliding plate (83) comprises a transverse sliding base (831) and a longitudinal sliding plate (832), wherein the transverse sliding base (831) is provided with a transverse guide rail, the longitudinal sliding plate (832) can transversely move relative to the transverse sliding base (831), the longitudinal sliding plate (832) is provided with a longitudinal guide rail, and the wire feeding support (82) is arranged on the longitudinal guide rail, so that the wire feeding support (82) can longitudinally move relative to the longitudinal sliding plate.
6. The endless rotary welding apparatus according to claim 1, wherein,
the transverse guide rail and the longitudinal guide rail are provided with screw rods, and the transverse movement amount of the longitudinal sliding plate (832) and the longitudinal movement amount of the wire feeding bracket (82) are adjusted by screwing the screw rods.
7. The endless rotary welding apparatus according to claim 1, wherein,
an electric brush (13) is arranged on the fixed shell (11), the electric brush (13) is a conductor, the electric brush (13) is electrically connected with the electric cabinet through a cable,
the conductive rotating shaft (12) is an insulator, a conductive layer (121) and a conductive column (122) are arranged on the conductive rotating shaft (12), and the conductive layer (121) and the conductive column (122) are conductors and are electrically connected;
the conductive layer (121) is annular and is arranged perpendicular to the rotation axis of the conductive rotation shaft (12), the conductive column (122) is parallel to the rotation axis of the conductive rotation shaft (12),
one end of the conductive column (122) protrudes out of the surface of the conductive rotating shaft (12) so that the conductive column (122) can be electrically connected with a welding machine head,
the electric brush (13) is closely attached to the conductive layer (121), so that when the conductive rotating shaft (12) rotates, the electric brush (13) and the conductive layer (121) can still be conducted.
8. The endless rotary welding apparatus according to claim 1, wherein,
the electric brushes (13) are in a plurality of layers and are distributed into a multi-layer structure, each layer is provided with at least one electric brush (13), and each layer of electric brush (13) is electrically connected with one type of power supply of the electric cabinet;
the conductive layers (121) and the conductive columns (122) are provided with a plurality of conductive layers (121) which form a multi-layer structure, each annular conductive layer (121) is electrically connected with only one conductive column (122), at least one conductive column (122) is connected with a welding gun, one conductive column (122) is connected with a hot wire unit,
each brush (13) is only in close contact with one conductive layer (121).
9. The endless rotary welding apparatus according to claim 1, wherein,
the rotary device further comprises an annular rotary plate (31), the rotary plate (31) is provided with a bulge so that the bulge is fixedly connected with the conductive rotary shaft (12), and the rotary plate (31) is fixedly connected with the welding machine head through a connecting arm so that the rotation angle of the welding machine head is consistent with that of the rotary plate (31).
10. An infinite rotation method of welding equipment is characterized in that the infinite rotation welding equipment is adopted according to one of claims 1-9, and by arranging a relatively rotatable electric brush (13) and a conductive layer (121), the electric brush is connected with an electric cabinet, and the conductive layer is connected with a welding machine head, so that a power supply cable is not wound when the welding equipment rotates.
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Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3905664A (en) * | 1973-06-28 | 1975-09-16 | Vittorio Baldoni | Rotating current tap and process for obtaining same |
| CN201353675Y (en) * | 2008-12-29 | 2009-12-02 | 成都鑫兴众力科技发展有限公司 | Suspended automatic nozzle intersection line welding device |
| CN202752730U (en) * | 2012-08-05 | 2013-02-27 | 中国第一重型机械股份公司 | Ring-direction all-position tungsten inert gas (TIG) automatic surfacing equipment for inner surface of flange seal groove |
| CN205967764U (en) * | 2016-08-31 | 2017-02-22 | 唐山开元特种焊接设备有限公司 | Narrow clearance heater TIG welding machine is taken over to formula of laying |
| CN206764098U (en) * | 2016-12-29 | 2017-12-19 | 唐山开元特种焊接设备有限公司 | TIG weld system |
| CN110756960A (en) * | 2019-11-18 | 2020-02-07 | 中国第一重型机械集团大连加氢反应器制造有限公司 | Tungsten electrode infinite rotation narrow gap welding joint |
| CN112636123A (en) * | 2020-12-18 | 2021-04-09 | 中国兵器装备集团上海电控研究所 | Detachable optical fiber signal rotary transmission device of multiple spot laminating |
| WO2021073010A1 (en) * | 2019-10-15 | 2021-04-22 | 中国船舶重工集团公司第七一六研究所 | Multi-degree-of-freedom adjustable laser-arc hybrid welding gun structure |
| CN214024003U (en) * | 2020-11-19 | 2021-08-24 | 内蒙古工业大学 | Three-dimensional sliding table for electric arc additive manufacturing |
| CN115365720A (en) * | 2022-09-07 | 2022-11-22 | 哈电集团（秦皇岛）重型装备有限公司 | Welding equipment with conductive slip ring |
| CN115502522A (en) * | 2022-11-24 | 2022-12-23 | 哈电集团（秦皇岛）重型装备有限公司 | Welding equipment with slewer |
-
2023
- 2023-03-14 CN CN202310238499.9A patent/CN116060740B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3905664A (en) * | 1973-06-28 | 1975-09-16 | Vittorio Baldoni | Rotating current tap and process for obtaining same |
| CN201353675Y (en) * | 2008-12-29 | 2009-12-02 | 成都鑫兴众力科技发展有限公司 | Suspended automatic nozzle intersection line welding device |
| CN202752730U (en) * | 2012-08-05 | 2013-02-27 | 中国第一重型机械股份公司 | Ring-direction all-position tungsten inert gas (TIG) automatic surfacing equipment for inner surface of flange seal groove |
| CN205967764U (en) * | 2016-08-31 | 2017-02-22 | 唐山开元特种焊接设备有限公司 | Narrow clearance heater TIG welding machine is taken over to formula of laying |
| CN206764098U (en) * | 2016-12-29 | 2017-12-19 | 唐山开元特种焊接设备有限公司 | TIG weld system |
| WO2021073010A1 (en) * | 2019-10-15 | 2021-04-22 | 中国船舶重工集团公司第七一六研究所 | Multi-degree-of-freedom adjustable laser-arc hybrid welding gun structure |
| CN110756960A (en) * | 2019-11-18 | 2020-02-07 | 中国第一重型机械集团大连加氢反应器制造有限公司 | Tungsten electrode infinite rotation narrow gap welding joint |
| CN214024003U (en) * | 2020-11-19 | 2021-08-24 | 内蒙古工业大学 | Three-dimensional sliding table for electric arc additive manufacturing |
| CN112636123A (en) * | 2020-12-18 | 2021-04-09 | 中国兵器装备集团上海电控研究所 | Detachable optical fiber signal rotary transmission device of multiple spot laminating |
| CN115365720A (en) * | 2022-09-07 | 2022-11-22 | 哈电集团（秦皇岛）重型装备有限公司 | Welding equipment with conductive slip ring |
| CN115502522A (en) * | 2022-11-24 | 2022-12-23 | 哈电集团（秦皇岛）重型装备有限公司 | Welding equipment with slewer |
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|---|---|
| CN116060740B (en) | 2023-08-25 |
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