CN111571078A - All-position automatic welding device and method for steel pipe with fixed opening - Google Patents
All-position automatic welding device and method for steel pipe with fixed opening Download PDFInfo
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- CN111571078A CN111571078A CN202010400928.4A CN202010400928A CN111571078A CN 111571078 A CN111571078 A CN 111571078A CN 202010400928 A CN202010400928 A CN 202010400928A CN 111571078 A CN111571078 A CN 111571078A
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- automatic welding
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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
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
- B23K37/02—Carriages for supporting the welding or cutting element
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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
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
- B23K37/02—Carriages for supporting the welding or cutting element
- B23K37/0211—Carriages for supporting the welding or cutting element travelling on a guide member, e.g. rail, track
- B23K37/0217—Carriages for supporting the welding or cutting element travelling on a guide member, e.g. rail, track the guide member being fixed to the workpiece
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- Butt Welding And Welding Of Specific Article (AREA)
Abstract
The application relates to a device and a method for automatically welding steel pipes at fixed openings in all positions. This application fixed mouthful steel pipe all position automatic welder include: the device comprises a track support, an automatic welding machine, a connecting sleeve and a driving mechanism; the automatic welding machine is provided with the connecting sleeve and is movably connected to the track support through the connecting sleeve, and the driving mechanism is arranged on the automatic welding machine and drives the automatic welding machine to advance; the track support comprises an arc track pipe and a plurality of supporting columns fixed on the outer side of the arc track pipe; the connecting sleeve is provided with a sliding groove and is sleeved on the arc-shaped track pipe, so that the connecting sleeve can slide relative to the arc-shaped track pipe; the driving mechanism drives the automatic welding machine, so that the automatic welding machine moves relative to the arc-shaped track pipe. The all-position automatic welding device and the all-position automatic welding method for the fixed port steel pipe have the advantages that the efficiency is improved and the quality is guaranteed by automatic welding.
Description
Technical Field
The application relates to a welding device, in particular to an all-position automatic welding device and a welding method for a steel pipe with a fixed opening.
Background
The major diameter steel pipe is installed in the tunnel because welding and installation need be accomplished in the steel pipe to the clearance of steel pipe and tunnel is too little, so that can't get into the welding machine and carry out the operation. For example, in some large-scale water resource engineering test section projects, a design requirement is that a DN5000 pressure steel pipe is installed in a DN5500 tunnel, a stiffening ring with the height of 140mm is arranged on the outer wall of the steel pipe, the steel pipe is transported to the tunnel to be installed in a butt joint mode after being manufactured, the gap between the outer wall of the steel pipe and a duct piece installed in the tunnel is only 200mm, the welding space of a butt joint of the steel pipe is limited, welding operation cannot be performed in the space of the outer wall, single-side welding can only be performed in the pipe, if traditional manual welding is adopted, the problems of low efficiency, unstable quality, high welding skill requirement, high labor intensity, long construction period and the like can be caused.
Disclosure of Invention
Based on this, the present application aims to provide a fixed-mouth steel pipe all-position automatic welding device and a welding method, which have the advantages of automatic welding to improve efficiency and ensure welding quality.
One aspect of the application provides a full-position automatic welding device for a fixed-mouth steel pipe, which comprises a track support, an automatic welding machine, a connecting sleeve and a driving mechanism; the automatic welding machine is provided with the connecting sleeve and is movably connected to the track support through the connecting sleeve, and the driving mechanism is arranged on the automatic welding machine and drives the automatic welding machine to advance;
the track support comprises an arc track pipe and a plurality of supporting columns fixed on the outer side of the arc track pipe; the connecting sleeve is provided with a sliding groove and is sleeved on the arc-shaped track pipe, so that the connecting sleeve can slide relative to the arc-shaped track pipe;
the driving mechanism drives the automatic welding machine, so that the automatic welding machine moves relative to the arc-shaped track pipe.
The application fixed port steel pipe all-position automatic welding device is connected with an arc-shaped rail pipe through an automatic welding machine, and therefore the automatic welding machine can move and weld along the arc-shaped rail pipe. The arc-shaped track pipe is supported and installed on the inner wall of the steel pipe of the fixed opening through the support column and placed at the joint of the steel pipe and the steel pipe, and therefore welding can be conducted conveniently and quickly. During welding, the automatic welding machine can be manually pushed to move along the arc-shaped track pipe manually, and the automatic welding machine can also be pushed to move through automatic driving equipment.
Further, actuating mechanism includes cylinder, roller bearing and driving motor, driving motor installs on the automatic welding machine, the cylinder cup joints on the roller bearing, and with driving motor's pivot is rotated and is connected, and the cylinder with but the arc track pipe butt is rotated relatively.
Furthermore, the cross section of the roller is of an axisymmetric structure with a hyperbola, and the curvature radius of the hyperbola is matched with the radius of the arc-shaped track pipe, so that the curved surface of the roller is in contact with the arc-shaped track pipe surface.
Further, the driving mechanism further comprises a speed reducer, and the driving motor is rotatably connected with the rolling shaft through the speed reducer.
Furthermore, the device also comprises track connecting rods, and the two track supports are arranged in parallel and are fixedly connected through the track connecting rods.
Further, the arc track pipe comprises a pipe body, an extension pipe and a connecting pipe, wherein the pipe body is equivalent to the outer diameter of the extension pipe, the outer diameter of the connecting pipe is equivalent to the inner diameter of the pipe body, and the pipe body and the extension pipe are connected through the connecting pipe to form a circular track.
The automatic welding machine further comprises an optical filter, a camera and a display, wherein the optical filter and the camera are respectively arranged on the automatic welding machine, and the optical filter is arranged between the camera and a welding gun of the automatic welding machine so as to shield light penetrating through the camera.
Further, the welding machine further comprises a control system, and the camera, the automatic welding machine and the driving mechanism are respectively electrically connected with the control system.
In another aspect of the present application, a method for welding a steel pipe with a fixed opening is provided, which includes the steps of:
the inner wall of the steel pipe joint is provided with a groove;
arranging a track at the groove of the inner wall of the steel pipe, and installing an automatic welding machine on the track;
and welding the groove along the track by an automatic welding machine.
According to the welding method of the steel pipe with the fixed opening, the groove is formed in the inner wall of the steel pipe, and the steel pipe is automatically welded along the track through the automatic welding machine, so that the effect of one-side welding and two-side fastening is achieved, and the steel pipe with the fixed opening is welded and fixed firmly.
Further, the welding the groove along the track by the automatic welding machine comprises: and (3) layering the welding seam at the groove, dividing the welding seam into a bottom welding layer, a filling welding layer and a cover surface welding layer, and respectively welding each layered layer by using a corresponding welding wire through an automatic welding machine.
For a better understanding and practice, the present application is described in detail below with reference to the accompanying drawings.
Drawings
FIG. 1 is a perspective view of an exemplary track support of the present application;
FIG. 2 is a perspective view of an exemplary automated welding machine assembly drive mechanism and camera of the present application;
FIG. 3 is a perspective view of an alternative view of an exemplary automated welding machine assembly drive mechanism and camera of the present application;
FIG. 4 is a front view of an exemplary roller-connecting roller of the present application;
fig. 5 is a schematic perspective view of an exemplary arcuate rail tube of the present application.
Detailed Description
In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be considered limiting of the present application. In the description of the present application, "a plurality" means two or more unless otherwise specified.
FIG. 1 is a perspective view of an exemplary track support of the present application; FIG. 2 is a perspective view of an exemplary automated welding machine assembly drive mechanism and camera of the present application; FIG. 3 is a perspective view of an alternative view of an exemplary automated welding machine assembly drive mechanism and camera of the present application; fig. 4 is a front view of an exemplary roller-connecting roller of the present application.
Referring to fig. 1-4, an exemplary automatic welding device for a steel pipe with a fixed opening in all positions includes a rail bracket, an automatic welding machine 20, a connecting sleeve 30 and a driving mechanism; the automatic welding machine 20 is provided with the connecting sleeve 30 and is movably connected to the track support through the connecting sleeve 30, and the driving mechanism is arranged on the automatic welding machine and drives the automatic welding machine 20 to advance;
the track support comprises an arc track pipe 13 and a plurality of supporting columns 12 fixed on the outer side of the arc track pipe 13; the connecting sleeve 30 is provided with a sliding groove and is sleeved on the arc-shaped track pipe 13, so that the connecting sleeve 30 can slide relative to the arc-shaped track pipe 13;
the driving mechanism drives the automatic welding machine 20, so that the automatic welding machine 20 moves relative to the arc-shaped track pipe 13.
In some preferred embodiments, the rail bracket further comprises a support pad 11, and the support pad 11 is fixed to the end of the support column 12 to support and fasten the steel pipe to the inner wall.
In some preferred embodiments, the driving mechanism includes a roller 43, a roller 44 and a driving motor 41, the driving motor 41 is installed on the automatic welding machine 20, the roller 43 is sleeved on the roller 44 and is rotatably connected with a rotating shaft of the driving motor 41, and the roller 43 abuts against the arc-shaped track pipe 13 and can rotate relatively. The roller 44 is rotated by the operation of the driving motor 41, and the roller 43 is rotated. The rollers 43 are tightly fitted over the rollers 44 so that the rotation is synchronized without relative slippage.
In some preferred embodiments, the cross-section of the roller 43 is an axisymmetric structure of a hyperbola having a radius of curvature matched to the radius of the curved track tube 13 such that the curved surface of the roller 43 is in surface contact with the curved track tube 13. Further, the cross-section of cylinder 43 is the big little symmetrical structure in the middle of both ends, and middle being formed with two longitudinal symmetry's arc concave position, these two arc concave positions can be the hyperbola form, also can be two semi-circles, in order to match the radius of arc track pipe 13, thereby laminate with the outer wall of arc track pipe 13, make the curved surface at the arc concave position place of cylinder 43 and the outer wall contact of arc track pipe 13, sufficient frictional force has when guaranteeing the roll of the relative arc track pipe 13 of cylinder 43.
In some preferred embodiments, the driving mechanism further includes a speed reducer 42, and the driving motor 41 is rotatably connected to the roller 44 through the speed reducer 42. A rotating shaft of the driving motor 41 is sleeved with a gear, and is meshed with a gear of the speed reducer 42 through the gear, so that the speed reducer 42 is driven to rotate, the roller 44 is sleeved with the gear, and the speed reducer 42 drives the gear on the roller 44 to rotate through gear meshing; thus, the rotation of the roller 44 and thus the rotation of the drum 43 is achieved by the operation of the driving motor 41. The roller 44 is rotatably connected to a rolling connecting rod, which is fixed to the reducer 42.
In some preferred embodiments, the automatic welder 20 includes a welder body, a welding robot, and a control cabinet. In a specific example, comprising a PipesStar CH-500Pro welder, a PL500 welding robot and an ACM500 control box, the PipesStar CH-500Pro welder is mounted on the PL500 welding robot and is electrically connected with the ACM500 control box respectively. What is achieved by the ACM500 control box is that the welding wire is automatically fed out and the automatic operation of the welding machine is controlled to move relative to the curved track pipe 13. The speed regulation, the angle control and the depth control of welding are realized through a PL500 welding robot, so that the precision of welding and the precision of manual welding are realized. In a further aspect, automatic welder 20 further includes a wire reel 22 around which the welding wire is wound, with one end of the welding wire being placed on gun 21 so that the welding wire is continuously fed.
In some preferred embodiments, the device further comprises a track connecting rod 14, and two track brackets are arranged side by side and fixedly connected through the track connecting rod 14.
Fig. 5 is a perspective view of an exemplary curved track tube 13 of the present application. Referring to fig. 5, in some preferred embodiments, the arc track pipe 13 includes a pipe body 131, an extension pipe 133, and a connection pipe 132, the pipe body 131 corresponds to an outer diameter of the extension pipe 133, the connection pipe 132 corresponds to an inner diameter of the pipe body 131, and the pipe body 131 and the extension pipe 133 are connected by the connection pipe 132 to form a circular track. Further, an annular protrusion is formed at the middle of the connection pipe 132 to block the pipe body 131 and the extension pipe 133 at both ends.
In some preferred embodiments, the welding device further comprises an optical filter 52, a camera 51 and a display (not shown), wherein the optical filter 52 and the camera 51 are respectively disposed on the automatic welding machine 20, and the optical filter 52 is disposed between the camera 51 and the welding gun 21 of the automatic welding machine 20 to block light transmitted through the camera 51. The filter 52 is arranged in front of the camera 51, and the camera 51 faces the welding position of the welding wire, when welding, the light of the welding position and the welding core covered by the welding seam can emit strong light, the strong light is shielded or absorbed by the filter 52, and only part of the light can pass through, so that the camera 51 can shoot a clear image picture instead of overexposure.
In some preferred embodiments, a control system is further included, and the camera 51, the automatic welder 20, and the driving mechanism are electrically connected to the control system, respectively.
In some preferred embodiments, the system further comprises an operating system, and the operating system is electrically connected with the control system.
The application discloses a welding method of a fixed-mouth steel pipe, which comprises the following steps:
the inner wall of the steel pipe joint is provided with a groove;
arranging a track at the groove of the inner wall of the steel pipe, and installing the automatic welding machine 20 on the track;
the groove is welded along the rail by an automatic welder 20.
In some preferred embodiments, the welding of the groove along the rail by the automatic welder 20 includes: the weld at the groove is layered and divided into a bottom weld layer, a filling weld layer and a cover weld layer, and each layer is welded by an automatic welding machine 20 and corresponding welding wires.
In some preferred embodiments, the welding is performed by using the automatic all-position welding device for the fixed-mouth steel pipe in any scheme.
In some preferred embodiments, the base weld layer is divided into a plurality of zones to be welded separately, and each zone employs a corresponding welding temperature. Furthermore, the bottom welding layer adopts a downward welding technology, and different welding parameters are adopted to correspond to the bottom welding layer according to the actual groove shape on site.
In some preferred embodiments, the filler layer uses an up-welding technique. Further, the filling welding layer is divided into at least three areas, and welding is carried out according to corresponding parameters. The filling welding layer can be divided into: a vertical welding area, a horizontal welding area and a vertical welding area. Furthermore, corresponding parameters are set according to the width of the welding bead for welding.
In some preferred embodiments, the cap layer uses an up-welding technique. Furthermore, the cover surface welding layer is divided into at least three areas, and welding is carried out according to corresponding parameters. The cap layer can be divided into: a vertical welding area, a horizontal welding area and a vertical welding area. Furthermore, corresponding parameters are set according to the width of the welding bead for welding.
In some preferred embodiments, the welding is performed by gas shielded welding.
In some preferred embodiments, the gap of the groove group is 2-5mm, and the groove angle requires that a single side is not less than 40 degrees; in one example, the gap of the groove group is 2mm, the single-side groove angle is 40 degrees, and in the example, the welding speed is high and the welding quality is good.
The application is illustrative fixed mouthful steel pipe total position automatic welder's theory of operation:
the welding method of the fixed port steel pipe of any example is adopted for welding, and the automatic all-position welding device of the fixed port steel pipe of the example is selected for welding.
And laying the rail bracket on the inner wall of the steel pipe at the fixed port and placing the rail bracket at the welding port. Lay the arc track pipe 13 of corresponding length according to the girth of steel pipe inner wall, wherein, support pad 11 at the steel pipe inner wall, arc track pipe 13 supports on support pad 11 through support column 12, then the tensioning is at the steel pipe inner wall. The length of the arc-shaped rail pipe 13 may be adjusted according to the length of the connected extension pipe 133. After the track support is erected, the automatic welding machine 20 is installed on the arc-shaped track pipe 13 through the connecting sleeve 30.
During welding, under the control of the control system, the automatic welding machine 20 performs welding according to a predetermined program and steps to respectively complete welding of each region, then the driving motor 41 operates and drives the speed reducer 42 to operate, the speed reducer 42 drives the roller 43 to rotate, the driving motor 41 operates at a constant speed, and the roller 43 can operate at a constant speed. The roller 43 rotates relative to the arcuate track tube 13 such that the roller 43 advances relative to the arcuate track tube 13, which in turn advances the automatic welder 20 relative to the arcuate track tube 13. In the welding process, the welding wire is automatically sent out to the welding opening through the automatic welding robot and the operation of the welding machine.
While welding, the picture shot by the camera 51 is remotely observed through the display, and the condition can be remotely checked by workers without using the site. When welding abnormity or welding fault is found, an instruction can be sent to the control system through the operating system, and the control system controls the welding machine and the welding robot to adjust; the welding can also be stopped.
Because the inner diameter of the fixed port steel pipe is large, the automatic welding device and the welding method for the fixed port steel pipe in the all-position mode can realize automatic welding and ensure welding quality, manual participation is not needed in the whole process, and safety of personnel is guaranteed under the condition that personnel participation is reduced. Compared with the prior art, the welding wire feeding device has the advantages that labor requirements are reduced, efficiency is improved, consumption of welding wires is reduced under the condition of automatic welding, and cost is reduced.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the claims. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application.
Claims (10)
1. The utility model provides a fixed mouthful steel pipe all position automatic welder which characterized in that: the welding machine comprises a track bracket, an automatic welding machine, a connecting sleeve and a driving mechanism; the automatic welding machine is provided with the connecting sleeve and is movably connected to the track support through the connecting sleeve, and the driving mechanism is arranged on the automatic welding machine and drives the automatic welding machine to advance;
the track support comprises an arc track pipe and a plurality of supporting columns fixed on the outer side of the arc track pipe; the connecting sleeve is provided with a sliding groove and is sleeved on the arc-shaped track pipe, so that the connecting sleeve can slide relative to the arc-shaped track pipe;
the driving mechanism drives the automatic welding machine, so that the automatic welding machine moves relative to the arc-shaped track pipe.
2. The full-position automatic welding device for the fixed-mouth steel pipe according to claim 1, characterized in that: the driving mechanism comprises a roller, a rolling shaft and a driving motor, the driving motor is installed on the automatic welding machine, the roller is sleeved on the rolling shaft and is rotatably connected with a rotating shaft of the driving motor, and the roller is abutted to the arc-shaped track pipe and can rotate relatively.
3. The full-position automatic welding device for the fixed-mouth steel pipe according to claim 2, characterized in that: the section of the roller is of a hyperbolic axisymmetric structure, and the curvature radius of the hyperbolic curve is matched with the radius of the arc-shaped track pipe, so that the curved surface of the roller is in contact with the pipe surface of the arc-shaped track.
4. The full-position automatic welding device for the fixed-mouth steel pipe according to claim 3, characterized in that: the driving mechanism further comprises a speed reducer, and the driving motor is rotationally connected with the rolling shaft through the speed reducer.
5. The full-position automatic welding device for the fixed-mouth steel pipe according to any one of claims 1 to 4, characterized in that: the track support is characterized by further comprising track connecting rods, and the two track supports are arranged in parallel and are fixedly connected through the track connecting rods.
6. The full-position automatic welding device for the fixed-mouth steel pipe according to claim 5, characterized in that: the arc track pipe comprises a pipe body, an extension pipe and a connecting pipe, wherein the pipe body is equivalent to the outer diameter of the extension pipe, the outer diameter of the connecting pipe is equivalent to the inner diameter of the pipe body, and the pipe body is connected with the extension pipe through the connecting pipe to form a circular track.
7. The full-position automatic welding device for the fixed-mouth steel pipe according to any one of claims 1 to 4, characterized in that: the automatic welding machine is characterized by further comprising an optical filter, a camera and a display, wherein the optical filter and the camera are arranged on the automatic welding machine respectively, and the optical filter is arranged between the camera and a welding gun of the automatic welding machine so as to shield light penetrating through the camera.
8. The full-position automatic welding device for the fixed-mouth steel pipe according to claim 7, characterized in that: the automatic welding machine is characterized by further comprising a control system, and the camera, the automatic welding machine and the driving mechanism are respectively electrically connected with the control system.
9. A welding method of a fixed-mouth steel pipe is characterized by comprising the following steps:
the inner wall of the steel pipe joint is provided with a groove;
arranging a track at the groove of the inner wall of the steel pipe, and installing an automatic welding machine on the track;
and welding the groove along the track by an automatic welding machine.
10. The welding method of a fixed-mouth steel pipe according to claim 9,
weld the groove along the track through automatic welder, include: and (3) layering the welding seam at the groove, dividing the welding seam into a bottom welding layer, a filling welding layer and a cover surface welding layer, and respectively welding each layered layer by using a corresponding welding wire through an automatic welding machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010400928.4A CN111571078A (en) | 2020-05-11 | 2020-05-11 | All-position automatic welding device and method for steel pipe with fixed opening |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010400928.4A CN111571078A (en) | 2020-05-11 | 2020-05-11 | All-position automatic welding device and method for steel pipe with fixed opening |
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| CN111571078A true CN111571078A (en) | 2020-08-25 |
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| CN202010400928.4A Pending CN111571078A (en) | 2020-05-11 | 2020-05-11 | All-position automatic welding device and method for steel pipe with fixed opening |
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Application publication date: 20200825 |