CN101780590B - Numerical control submerged automatic arc welding device and numerical control submerged automatic arc welding method for saddle-shaped narrow bevel - Google Patents

Numerical control submerged automatic arc welding device and numerical control submerged automatic arc welding method for saddle-shaped narrow bevel Download PDF

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CN101780590B
CN101780590B CN2009100770778A CN200910077077A CN101780590B CN 101780590 B CN101780590 B CN 101780590B CN 2009100770778 A CN2009100770778 A CN 2009100770778A CN 200910077077 A CN200910077077 A CN 200910077077A CN 101780590 B CN101780590 B CN 101780590B
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welding
welding gun
saddle
numerical control
rotation
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CN2009100770778A
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CN101780590A (en
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于丹
杨克非
孟兆林
王锴
王景洲
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机械科学研究院哈尔滨焊接研究所
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Abstract

The invention provides a numerical control submerged automatic arc welding device and a numerical control submerged automatic arc welding method for a saddle-shaped narrow bevel and belongs to the technical field of non-planar automatic welding. The invention mainly solves the technical problems of low production efficiency and non-assured welding quality of the welding of heavy pressure vessel in the prior art. The automatic welding device and the automatic welding method of the invention mainly comprise that: a rotating motor (3) rotates to drive a welding gun (2) to perform a rotary motion a; meanwhile, a machine head lifting motor (4) makes a welding gun (2) perform a lifting motion b; the two kinds of motions a and b form a resultant motion through a certain numerical control model; and through the numerical control resultant motion, a welding gun head (2-1) can accurately realize the saddle-shaped path welding of a narrow bevel. Meanwhile, the numerical control of the welding times and welding amount of each layer, the number of the welded layers and the thickness of the welding channels in the narrow bevel can be realized. The device and the method are mainly used in the saddle-shaped welding of the narrow bevel between a connecting pipe and a cylinder in the heavy pressure vessel.

Description

Numerical control saddle-shaped narrow bevel Lincoln weld device and Lincoln weld method thereof

Technical field

Numerical control saddle-shaped narrow bevel Lincoln weld device that the present invention proposes and Lincoln weld method thereof belong to the on-plane surface space and are welded to connect technical field, specially refer to saddle-shaped narrow bevel Lincoln weld device and Lincoln weld method.

Background technology

Heavy pressure vessel mainly comprises the hydrogenation reactor in coal liquefaction reactor, the large-scale ethylene plant, the boiler-steam dome in the large-scale thermal power machine group in the pressure vessel in the nuclear power generating sets, the large-scale coal gas complete set of equipments.

The cylindrical shell of a pressure vessel need be burn-on several even tens mouthpieces, and weld seam is the space saddle-shaped curve, but according to different groove types, needs the continuous welding of multilayer multiple tracks, and these weld seams often become key and the bottleneck that product is made.

At present, domestic most of producer adopts manual welding, and only minority producer adopts the welding special machine, but automaticity is not high, the shape of a saddle motion of welding gun realizes by mechanical system, promptly, rotate the elevating movement of drive welding gun, need the manual adjustment eccentric throw in the welding process by eccentric wheel by the drive eccentric wheel that rotatablely moves of welding gun, efficient is low, welding quality is difficult to guarantee, and in case weld defect takes place, because big thickness, deep groove and be difficult to very much repair.

Summary of the invention

The problem that exists in the shape of a saddle welding according to adapter and cylindrical shell in the background technology, the present invention proposes a kind of numerical control saddle-shaped narrow bevel Lincoln weld device and Lincoln weld method thereof, and it can high-quality, finish the welding of taking over the cylindrical shell saddle-shaped narrow bevel efficiently.

Technical scheme of the present invention is as follows:

1, a kind of numerical control saddle-shaped narrow bevel Lincoln weld device is characterized in that this automatic soldering device comprises:

1) electric rotating machine 3 is arranged on central fixed shaft 1 one sides, head lifting motor 4 is fixed on central fixed shaft 1 opposite side, welding gun 2 is being fixed in below with respect to transverse arm 5 vertically disposed columns 9, transverse arm 5 is provided with traversing motor 7, also have a welding gun lifting motor 8 to be arranged on the column 9, wire-feed motor 6 is fixed on the below of column 9;

2) when the continuous welding of multilayer multiple tracks, twine with outside power transmission line that is connected and appendix for preventing equipment, be provided with rotation conduction, gas operated device:

The structure of rotation electric installation is as follows:

Insulation sleeve 2-6 is housed on central shaft 2-5, little conducting ring 2-7 is fixed on the insulation sleeve 2-6, between the little conducting ring 2-7 dead ring 2-8 is housed, make it mutually insulated, the pilot 2-9 that comes in the outside is connected with little conducting ring 2-7 respectively, and the welding current lead 2-10 that comes in the outside is connected with big conducting ring 2-11; The carbon brush holder 2-13 of mutual insulating is housed on the rotary sleeve 2-12, and little carbon brush 2-14 is installed in respectively among the carbon brush holder 2-13, is pressed on the little conducting ring 2-7 by spring 2-15, draws pilot 2-16 and is connected with little carbon brush 2-14; Big carbon brush 2-17 also is pressed on the big conducting ring 2-11 by spring 2-18, and the welding current lead 2-19 that draws is connected with big carbon brush 2-17; During welding, central shaft 2-5 and little conducting ring 2-7, big conducting ring 2-11 maintain static, and little carbon brush 2-14 and big carbon brush 2-17 rotate with device, and welding current and the rotation of control electric current are derived;

The structure of rotation gas operated device is as follows:

Air guide shaft 2-20 is installed on the central shaft 2-5, and air admission hole 2-23 is arranged on the air guide shaft 2-20; Guide sleeve 2-21 is installed on the rotary sleeve 2-22, and venthole 2-24 is arranged on the guide sleeve 2-21; Guide sleeve 2-21 processes annular guide ring 2-26, and next on it have " O " shape sealing ring 2-25, is used to prevent that the compressed air of importing from leaking;

When the rotation of rotation gas operated device, central shaft 2-5, air admission hole 2-23 are motionless, guide sleeve 2-21 and venthole 2-24 rotation, and the compressed air rotation is derived, and leads to control cabinet, is used for the air cooling of control cabinet;

3) clamping and fixing device 11 comprises the rotation handwheel 12 on its top, one group of bevel gear 11-1, screw 11-2, screw mandrel 11-3, pull bar 11-4, shift(ing) ring 11-5 and three groups of linkage 11-6 that screw mandrel 11-3 termination is provided with;

4) be used for the special welding gun structure that the monolateral deep groove shape of a saddle in narrow gap welds, welding gun 2 sectional dimensions are 25 * 8MM, and narrow place is 8MM; This welding gun 2 is by ignition tip 2-1, and welding gun bar 2-2 and thread eye 2-4 form, and ignition tip 2-1 is connected with welding gun bar 2-2 by four electricity nail 2-3; Ignition tip 2-1 is made by chrome zirconium copper alloy, and it has good wearability.

2, utilize above-mentioned automatic welding device to carry out numerical control saddle-shaped narrow bevel Lincoln weld method, it is characterized in that this automatic welding method comprises:

1) electric rotating machine 3 rotates, drive welding gun 2 by gear pair and be rotated motion a around central fixed shaft 1, head lifting motor 4 moves up and down b by screw mandrel, screw transmission drive transverse arm 5 and column 9 simultaneously, also is same elevating movement b thereby drive welding gun 2;

Above-mentioned two kinds of motions a and b carry out resultant motion in real time according to certain Mathematical Modeling, and this Mathematical Modeling is a parameter to take over 14 the diameter d and the diameter D of cylindrical shell 13; By the resultant motion of this numerical control, make welding gun 2 can accurately finish the welding of the narrow groove shape of a saddle track of adapter 14 and cylindrical shell 13;

2) by man-machine interface on device control cabinet 10 panels, the hoisting depth of welding gun (2) after the amount of lap of the welding bead quantity (2~5 road) of each layer welding, each welding bead, the welding number of plies and each layer welding bead are finished in the input groove 15; Automatically welding gun 2 is at first lighted weldering from shape of a saddle welding bead minimum during welding, welded a week finish overlap joint after, welding gun 2 is displacement of translation automatically from inside to outside, carry out with layer last second road welding: after one deck welding is finished, welding gun 2 promotes a welding bead height automatically, ecto-entad carries out second layer welding in groove 15, moves in circles successively and carries out, up to the welding number of plies of finishing regulation;

3) clamping and positioning device 11 is used for equipment clamping and location and installation are being taken over 14, manually shake handwheel 12, driving one group of bevel gear 11-1 rotates, and then drive screw 11-2, screw 11-2 drives screw mandrel 11-3 lifting, drive three groups of outside tensioners of linkage 11-6 or inwardly shrink, equipment installation after three groups of linkage 11-6 tensioners are being taken over 14 inwalls, and welding gun 2 pivots be positioned at take over 14 in the heart.

3, according to above-mentioned 2 described Lincoln weld methods, when by the size of the adapter 14 of being welded and cylindrical shell 13 preparations when inaccurate, motion by switch or remote controller Butt welding gun 2 is finely tuned, traversing motor 7 rotates, about on the transverse arm 5, finely tune c by gear, screw mandrel revolute pair realization welding gun 2, the rotation of welding gun lifting motor 8 is by the d of fine setting up and down of screw mandrel, screw driving-belt realization welding gun 2.

4, according to above-mentioned 2 described automatic welding methods, according to adapter 14 and the outer shape of a saddle of cylindrical shell 13, the interior shape of a saddle and three kinds of different types of attachment of horizontal annular welding, design three kinds of different numerical control programs for selecting for use, wherein first kind and second kind of program are the rotation shape of a saddle movement locus synthetic with elevating movement, it is the initial point position difference of welding, differ 90 °, and the third only rotatablely moves, do not have elevating movement.

Adopt numerical control saddle-shaped narrow bevel Lincoln weld device that the present invention proposes and automatic welding method butt tube thereof and cylindrical shell weld with background technology in the not high welding method of craft or automaticity compare the obvious production efficiency that improved, and can guarantee the high-quality of shape of a saddle welding.

Description of drawings

Fig. 1 numerical control saddle-shaped narrow bevel of the present invention Lincoln weld schematic representation of apparatus;

The side view of Fig. 2 Fig. 1;

The shape of a saddle movement locus of Fig. 3 welding gun synthesizes schematic diagram;

Fig. 4 saddle-shaped narrow bevel welding bead is arranged schematic diagram

The schematic diagram of the type of attachment that the adapter that Fig. 5 is welded is different with cylindrical shell

The structural representation of Fig. 6 (a) welding gun rotation electric installation;

The structural representation of Fig. 6 (b) welding gun rotation gas operated device;

The structure chart of the clamping and positioning device that Fig. 7 takes over;

Fig. 8 is used for the structure chart of the welding gun of saddle-shaped narrow bevel welding.

Fig. 1 and Fig. 2 can clearly represent numerical control saddle-shaped narrow bevel Lincoln weld device of the present invention.

One side of central fixed shaft 1 is being provided with electric rotating machine 3, head lifting motor 4 is installed in central fixed shaft 1 opposite side, welding gun 2 is being fixed in below with respect to transverse arm 5 vertically disposed columns 9, transverse arm 5 is provided with traversing motor 7, also have a welding gun lifting motor 8 to be arranged on the column 9, wire-feed motor 6 is fixed on the below of column 9.Below device, take over 14 clamping and positioning device 11 in addition and rotate handwheel 12.

Can find out that in conjunction with Fig. 3 the figure of welding gun 2 shape of a saddle movement locus is synthetic again, electric rotating machine 3 rotates, drive welding gun 2 by gear pair and be rotated motion a around central fixed shaft 1, head lifting motor 4 moves up and down b by screw mandrel, screw transmission drive transverse arm 5 and column 9 simultaneously, also is same elevating movement b thereby drive welding gun 2.

Two kinds of above-mentioned motions, rotatablely move a and the elevating movement b that are welding gun 2 carry out resultant motion in real time according to certain Mathematical Modeling, this Mathematical Modeling is a parameter to take over 14 the diameter d and the diameter D of cylindrical shell 13, welding gun 2-1 can accurately be finished take over 14 to weld with the shape of a saddle of the narrow groove 15 of 13 of cylindrical shells by numerical control like this, the curve 16 of Fig. 3 is just expressed welding gun 2 shape of a saddle movement locus after the resultant motion.

When by the size of the adapter 14 of being welded and cylindrical shell 13 preparations when inaccurate, motion by switch or remote controller Butt welding gun 2 is finely tuned, traversing motor 7 rotates, by gear, screw mandrel revolute pair welding gun 2 be implemented on the transverse arm 5 about finely tune c, the rotation of welding gun lifting motor 8 is by the d of fine setting up and down of screw mandrel, screw transmission realization welding gun 2.

Like this and since the welding gun head 2-1 of numerical control rotatablely move and real-time resultant motion is carried out in elevating movement, replenish the fine setting up and down of arc welding gun head 2-1 again.Its result makes arc welding gun head 2-1 can realize the shape of a saddle movement locus of narrow groove accurately, finishes high quality welding.

The expression of Fig. 4 signal the situation that welding beads are arranged in the groove 15.By artificial interface on device control cabinet 10 panels, following welding bead parameter in the input groove 15: the number of weld passes of each layer, amount of lap, hoisting depth behind the intact one deck of the welding number of plies and welding gun 2 every welderings, when numerical control is welded automatically, above-mentioned welding bead parameter can be controlled automatically, arc welding gun head 2-1 at first lights weldering from shape of a saddle welding bead minimum, welded a week finish overlap joint after, welding gun 2 is displacement of translation automatically from inside to outside, carry out with layer last second road welding: after one deck welding is finished, welding gun 2 promotes a welding bead height automatically, ecto-entad carries out second layer welding in groove 15, move in circles successively and carry out, up to the welding number of plies that realizes regulation, finish the shape of a saddle welding between adapter 14 and the cylindrical shell 13.

From above explanation as can be seen, the movement locus that device of the present invention can not only numerical control shape of a saddle welding bead, but also the arrangement of welding beads in can numerical control groove 15 realizes the continuous welding of multilayer multiple tracks, therefore can guarantee high accuracy, high quality welding.

Because adapter 14 is different with the type of attachment of cylindrical shell 13, as shown in Figure 5, in fact both three kinds of connected modes can occur, promptly as taking over 14 outer shape of a saddle joints (Fig. 5 (1)) in cylindrical shell 13 outsides, take over 14 interior shape of a saddle joint Fig. 5 (2) and adapter 14 horizontal loops form joint Fig. 5 (3) that are connected with cylindrical shell 13 planar sections in cylindrical shell 13 inside, corresponding different adapter 14 can design different numerical control programs for selecting for use with the joint form of cylindrical shell 13, wherein the numerical control program of the joint form employing of Fig. 5 (1) and Fig. 5 (2) expression is shape of a saddle movement locus, it is the original position difference of welding, differ 90 °, and the numerical control program of Fig. 5 (3) is simple relatively, only rotatablely move no elevating movement.

In order to prevent that when the continuous welding of multilayer multiple tracks equipment and the outside power transmission line that is connected and appendix twines, equipment is provided with that rotation is conducted electricity, gas operated device.

Fig. 6 (a) is the structural representation of welding gun rotation electric installation.Insulation sleeve 2-6 is housed on central shaft 2-5, little conducting ring 2-7 is fixed on the insulation sleeve 2-6, between the little conducting ring 2-7 dead ring 2-8 is housed, make it mutually insulated, the pilot 2-9 that comes in the outside is connected with little conducting ring 2-7 respectively, and the welding current lead 2-10 that comes in the outside is connected with big conducting ring 2-11; The carbon brush holder 2-13 of dynamo-electric insulation is housed on the rotary sleeve 2-12, and little carbon brush 2-14 is installed in respectively among the carbon brush holder 2-13, is pressed on the little conducting ring 2-7 by spring 2-15, draws pilot 2-16 and is connected with little carbon brush 2-14; Big carbon brush 2-17 also is pressed on the big conducting ring 2-11 by spring 2-18, and the welding current lead 2-19 that draws is connected with big carbon brush 2-17.

When welding was carried out, central shaft 2-5 and little conducting ring 2-7, big conducting ring 2-11 maintained static, and little carbon brush 2-14 and big carbon brush 2-17 rotate with device, could prevent carrying when locking apparatus rotates the power transmission line of control electric current and welding current not twine like this.

Fig. 6 (b) is the structural representation of welding gun rotation gas operated device.Air guide shaft 2-20 is installed on the central shaft 2-5, and air admission hole 2-23 is arranged on the air guide shaft 2-20; Guide sleeve 2-21 is installed on the rotary sleeve 2-22, and venthole 2-24 is arranged on the guide sleeve 2-21; Guide sleeve 2-21 processes annular guide ring 2-26, and next on it have " O " shape sealing ring 2-25, is used to prevent that the compressed air of importing from leaking;

When the rotation of rotation gas operated device, central shaft 2-5, air admission hole 2-23 are motionless, guide sleeve 2-21 and venthole 2-24 rotation, and the compressed air rotation is derived.

The compressed-air actuated pipeline of input can not twine when device rotates yet like this.

Welded piece will produce and give about 150 ° of heat during welding, and is overheated for the control system that prevents to be installed on the device, cool off with the compressed air that rotation imports.

Fig. 8 represents to take over the structure chart of 14 clamping and positioning device.Handwheel 12 is rotated in hand control, driving one group of bevel gear 11-1 rotates, and then drive screw 11-2, screw 11-2 drives screw mandrel 11-3 lifting, screw mandrel 11-3 is equipped with pull bar 11-4 in the end, and pull bar 11-4 promotes shift(ing) ring 11-5, drives three groups of linkage 11-6 by outside tensioner of backstay 11-7 or inwardly contraction, equipment installation after three groups of linkage 11-6 tensioners are being taken over 14 inwalls, and arc welding gun head 2-1 pivot be positioned at take over 14 in the heart.

Fig. 8 (a) expression is used for the welding gun structure chart of saddle-shaped narrow bevel welding.Welding gun 2 is in order to adapt to the saddle-shaped narrow bevel welding, adopt a kind of special structure, welding gun 2 sectional dimensions are 25 * 8MM, narrow place is 8MM, this welding gun 2 is made up of ignition tip 2-1, welding gun bar 2-2 and thread eye 2-4, ignition tip 2-1 is connected with welding gun bar 2-2 by screw 2-3, and ignition tip 2-1 is made by chrome zirconium copper alloy, and it has good abrasion resistance.

The specific embodiment

Fig. 8 (b) is the vertical view of Fig. 8 (a).

With the top of whole welder handling to welded pipe 14 and cylindrical shell 13, clamping and positioning device 11 falls into takes over 14 endoporus, shake and rotate handwheel 12, clamping and positioning device 11 clamp take over 14 and with the pivot of welding gun 2 be positioned at take over 14 in the heart.By man-machine interface on device control cabinet 10 panels, import control parameters such as the diameter D of the diameter d of soldered adapter 14 and cylindrical shell 13 and throat thickness, the welding number of plies, amount of lap, every layer of number of weld passes, by technological parameters such as welding control cabinet input welding current, weldingvoltages, finish the link that is provided with of parameter again.

Press the start button of control panel 10, automatically the unsolder beginning, arc welding gun head 2-1 is driven by electric rotating machine 3 and head lifting motor 4, finishes the synthetic in real time shape of a saddle welding movement locus of numerical control.During welding, when taking over 14 and the size of cylindrical shell 13 preparations when inaccurate, can utilize remote controller to rotate by traversing motor 7 and the rotation of welding gun lifting motor 8, realization arc welding gun head 2-1 movement locus is finely tuned up and down.

In groove 15, the ground floor welding bead is arranged from inside to outside, after arc welding gun head 2-1 whenever rotates a circle and overlaps a segment distance, moves a weld width laterally, carry out with layer last second road welding, after finishing the welding of one deck welding bead, arc welding gun head 2-1 improves a bead thickness automatically, and ecto-entad is arranged welding bead in the other direction again, carry out second layer welding, so move in circles, finish the welding number of plies of setting after, the welding of whole groove 15 is finished.These welding procedures also are that microcomputer automatic control is finished.

The application's devices and methods therefor realizes that all kinds of heavy pressure vessels are taken over and the important technological parameters of cylindrical shell shape of a saddle welding is as follows:

The diameter range of taking over: 500-2000mm

The height of taking over :≤800mm

Cylindrical shell thickness :≤300mm

The maximum drop amount of the shape of a saddle :≤300mm

Welding gun length: 450mm

Welding gun maximum pendulum angle: ± 4 °

Source of welding current rated current: 1000A

Source of welding current rated voltage: 44V

Speed of welding: 300~500mm/min

Gage of wire: 3.2~4.0mm

The groove bottom is minimum dimension: 24mm radially

Arcing mode: short-circuit arc

The application's apparatus and method can satisfy the technological requirement of all kinds of pressure vessel mouthpiece welding.

Claims (4)

1. numerical control saddle-shaped narrow bevel Lincoln weld device is characterized in that this automatic soldering device comprises:
1) electric rotating machine (3) is arranged on central fixed shaft (1) one side, head lifting motor (4) is fixed on central fixed shaft (1) opposite side, fixing welding gun (2) with respect to the below of the vertically disposed column of transverse arm (5) (9), transverse arm (5) is provided with traversing motor (7), also have a welding gun lifting motor (8) also to be arranged on the column (9), wire-feed motor (6) is fixed on the below of column (9);
2) for preventing that when the continuous welding of multilayer multiple tracks equipment and the outside power transmission line that is connected and appendix twines, equipment is provided with that rotation is conducted electricity, gas operated device:
The structure of rotation electric installation is as follows:
Insulation sleeve (2-6) is housed on central shaft (2-5), little conducting ring (2-7) is fixed on the insulation sleeve (2-6), dead ring (2-8) is housed between the little conducting ring (2-7), make it mutually insulated, the pilot of coming in the outside (2-9) is connected with little conducting ring (2-7) respectively, and the welding current lead of coming in the outside (2-10) is connected with big conducting ring (2-11); The carbon brush holder (2-13) of mutual insulating is housed on the rotary sleeve (2-12), little carbon brush (2-14) is installed in respectively in the carbon brush holder (2-13), be pressed on the little conducting ring (2-7) by spring (2-15), draw pilot (2-16) and be connected with little carbon brush (2-14); Big carbon brush (2-17) also is pressed on the big conducting ring (2-11) by spring (2-18), and the welding current lead (2-19) of drawing is connected with big carbon brush (2-17); During welding, central shaft (2-5) and little conducting ring (2-7), big conducting ring (2-11) maintain static, and little carbon brush (2-14) and big carbon brush (2-17) rotate with device, and welding current and the rotation of control electric current are derived;
The structure of rotation gas operated device is as follows:
Air guide shaft (2-20) is installed on the central shaft (2-5), and air admission hole (2-23) is arranged on the air guide shaft (2-20); Guide sleeve (2-21) is installed on the rotary sleeve (2-22), and venthole (2-24) is arranged on the guide sleeve (2-21); Guide sleeve (2-21) processes annular guide ring (2-26), and it respectively has " O " shape sealing ring (2-25) up and down, is used to prevent that the compressed air of importing from leaking;
When the rotation of rotation gas operated device, (2-23) is motionless for central shaft (2-5), air admission hole, guide sleeve (2-21) and venthole (2-24) rotation, and the compressed air rotation is derived;
3) clamping and positioning device of equipment (11) comprises rotation handwheel (12), one group of bevel gear (11-1), screw (11-2), the screw mandrel (11-3) on its top, pull bar (11-4), shift(ing) ring (11-5) and three groups of linkages (11-6) that screw mandrel (11-3) termination is provided with;
4) be used for the special welding gun structure of monolateral narrow groove shape of a saddle Lincoln weld, welding gun (2) sectional dimension is 25 * 8MM, and narrow place is 8MM; This welding gun (2) is made up of ignition tip (2-1), welding gun bar (2-2) and thread eye (2-4), and ignition tip (2-1) is connected with welding gun bar (2-2) by four screws (2-3); Ignition tip (2-1) is made by chrome zirconium copper alloy, and it has good wearability.
2. utilize the described automatic welding device of claim 1 to carry out numerical control saddle-shaped narrow bevel Lincoln weld method, it is characterized in that this automatic welding method comprises:
1) electric rotating machine (3) rotates, drive welding gun (2) by gear pair and be rotated motion a around central fixed shaft (1), head lifting motor (4) moves up and down b by screw mandrel, screw transmission drive transverse arm (5) and column (9) simultaneously, also is same elevating movement b thereby drive welding gun (2);
Above-mentioned two kinds of motion a and b carry out resultant motion in real time according to certain Mathematical Modeling, and this Mathematical Modeling is a parameter with the diameter d of adapter (14) and the diameter D of cylindrical shell (13); By the resultant motion of this numerical control, make welding gun (2) can accurately finish the welding of the narrow groove shape of a saddle track of adapter (14) and cylindrical shell (13);
2) by man-machine interface on device control cabinet (10) panel, the hoisting depth of welding gun (2) after the amount of lap of the welding bead quantity of each layer welding, each welding bead, the welding number of plies and each layer welding bead are finished in the input groove (15); Automatically welding gun (2) is at first lighted weldering from shape of a saddle welding bead minimum during welding, welded a week finish overlap joint after, welding gun (2) is displacement of translation automatically from inside to outside, carry out with layer last second road welding: after one deck welding is finished, welding gun (2) promotes a welding bead height automatically, ecto-entad carries out second layer welding in groove (15), moves in circles successively and carries out, up to the welding number of plies of finishing regulation;
3) clamping and positioning device (11) is used for (14) are being taken in equipment clamping and location and installation, manually shake handwheel (12), driving one group of bevel gear (11-1) rotates, and then drive screw (11-2), screw (11-2) drives screw mandrel (11-3) lifting, drive outwards tensioner or inwardly shrink of three groups of linkages (11-6), equipment installation after three groups of linkages (11-6) tensioner is being taken over (14) inwall, and the pivot of welding gun (2) be positioned at adapter (14) in the heart.
3. Lincoln weld method according to claim 2 is characterized in that,
When the size that is prepared by the adapter (14) of being welded and cylindrical shell (13) is inaccurate, motion by switch or remote controller Butt welding gun (2) is finely tuned, the rotation of traversing motor (7), about on the transverse arm (5), finely tune c by gear, screw mandrel revolute pair realization welding gun (2), the rotation of welding gun lifting motor (8) is by the d of fine setting up and down of screw mandrel, screw transmission realization welding gun (2).
4. Lincoln weld method according to claim 2 is characterized in that,
According to taking over (14) and the outer shape of a saddle of cylindrical shell (13), the interior shape of a saddle and three kinds of different types of attachment of horizontal annular welding, design three kinds of different numerical control programs for selecting for use, wherein first kind and second kind of program are the rotation shape of a saddle movement locus synthetic with elevating movement, it is the initial point position difference of welding, differ 90 °, and the third only rotatablely moves, and does not have elevating movement.
CN2009100770778A 2009-01-20 2009-01-20 Numerical control submerged automatic arc welding device and numerical control submerged automatic arc welding method for saddle-shaped narrow bevel CN101780590B (en)

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CN107999934A (en) * 2017-12-11 2018-05-08 中国第重型机械集团大连加氢反应器制造有限公司 Saddle-shaped joint pipe groove narrow-clearance submerged arc welding connects method and apparatus
CN109013482A (en) * 2018-07-27 2018-12-18 郑州派锐商贸有限责任公司 A kind of multi-faceted bearing cleaner
CN110202238A (en) * 2019-06-20 2019-09-06 中国核工业第二二建设有限公司 Reinforced steel bar perforation plug welding method
CN110508907A (en) * 2019-08-14 2019-11-29 山东核电设备制造有限公司 A kind of the gas guarantor's automatic welding method and system of plug welds of perforating

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