CN217701744U - Plate splicing and welding device of spiral welding machine for manufacturing PCCP steel cylinder - Google Patents
Plate splicing and welding device of spiral welding machine for manufacturing PCCP steel cylinder Download PDFInfo
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- CN217701744U CN217701744U CN202122632446.4U CN202122632446U CN217701744U CN 217701744 U CN217701744 U CN 217701744U CN 202122632446 U CN202122632446 U CN 202122632446U CN 217701744 U CN217701744 U CN 217701744U
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Abstract
The application relates to the field of manufacturing of PCCP steel cylinders, in particular to a plate splicing and welding device of a spiral welding machine for manufacturing the PCCP steel cylinders; the welding machine comprises a turnover mechanism, a spiral welding machine and a welding platform; the turnover mechanism which can support and turn over the rolling plate to be attached to the liner core of the spiral welding machine is positioned on one side of the liner core of the spiral welding machine. The coil plate is placed on the electromagnet support table, and the position of the coil plate is fixed and corrected through the adsorption function of the electromagnet support table; turning the rolling plate to a set angle through the rotation function of the turning table; then the rolling plate is conveyed by a conveying platform and completely attached to the liner core; finally, carrying out straight seam welding and circular seam welding by an automatic welding machine; the method realizes the makeup welding process of the steel cylinder on the spiral welding machine equipment, and solves the problem of spiral cracks on the inner wall of the PCCP finished pipe; meanwhile, compared with the traditional makeup welding process, the labor input is reduced, and the quality control of the size and the appearance of the steel cylinder in the makeup welding process is improved.
Description
Technical Field
The application relates to the field of PCCP steel cylinder manufacturing, in particular to a splicing and welding device of a spiral welding machine for manufacturing the PCCP steel cylinder.
Background
The Prestressed Concrete Cylinder Pipe (PCCP) is a pipe which is made by winding circumferential prestressed steel wires on the outer side of a concrete pipe core with a steel cylinder and manufacturing a cement mortar protective layer. The system is generally used for urban water supply and drainage main pipes, industrial water delivery pipelines, farmland irrigation, factory pipe networks, power plant replenishing water pipes, cooling water circulating systems, inverted siphons, pressure tunnel pipelines, pipe ditches, pipe galleries, deep soil covering galleries and the like.
PCCP is classified as: manufacturing a bell and spigot, manufacturing a steel cylinder, manufacturing pipe core concrete, winding a circumferential prestressed steel wire, and injecting a mortar protective layer by a roller. At present, spiral welding technology is adopted when steel cylinders are manufactured in China, and finished pipes are finally formed through manufacturing of tube core concrete, winding of annular prestressed steel wires and spraying of mortar protective layers by rollers after the steel cylinders are manufactured. However, spiral cracks were found on the inner wall surface of the finished pipe. Analysis and research show that the shape of the crack is basically consistent with that of the spiral weld joint of the steel cylinder, and the spiral crack can be inferred to be related to the spiral welding process of the steel cylinder.
According to the national standard of prestressed concrete cylinder pipe GB/T19685 for manufacturing PCCP products, spiral welding or tailor welding can be adopted for manufacturing the steel cylinder body, and finally the size of the steel cylinder body can meet the design requirement. At present, the PCCP industry in China adopts a spiral welding process to manufacture a steel cylinder, but spiral cracks are easy to appear on the inner wall of a finished pipe. Although the national standard allows spiral cracks to appear, if the concrete strength is not well controlled, the height of the steel cylinder welding line is not well controlled, the width of the spiral welding line in the finished pipe exceeds 0.5 mm, and hidden troubles are left for the product quality.
And analyzing the reason of the spiral crack, and finding that the cracks appear at the spiral weld joint of the steel cylinder according to the position and the rule of the spiral crack, so that the generation of the spiral crack on the inner wall of the PCCP pipe can be judged to be related to the stress release of the spiral weld joint on the spiral welded steel cylinder.
Disclosure of Invention
The application aims to provide a PCCP steel cylinder manufacturing spiral welding machine plate splicing welding device and a product thereof, wherein spiral cracks are eliminated, and potential quality hazards are eliminated.
The technical scheme of the application is realized as follows: the PCCP steel cylinder manufacturing spiral welding machine plate splicing and welding device comprises a turnover mechanism, a spiral welding machine and a welding platform; the turnover mechanism which can bear and overturn the rolling plate and is attached to the liner core of the spiral welding machine in a turnover mode is located on one side of the liner core of the spiral welding machine, the welding platform is provided with a welding track which is consistent with the axis direction of the liner core of the spiral welding machine in the set direction, the automatic welding machine is installed through the welding track, the welding platform is located on the other side of the liner core, and the welding point of the automatic welding machine is correspondingly located on the outer wall of the liner core.
Further, the turnover mechanism comprises a conveying track, a conveying platform, a turnover table and an electromagnet support table; the arrangement direction of the conveying track is horizontal and vertical to the axial direction of a liner core of the spiral welding machine; the electro-magnet saddle fixed mounting that the up end personally submits concave cambered surface is in the roll-over table, and the roll-over table is close to the one end of spiral welder's courage core and is connected with the articulated shaft and through the rotatable installation of articulated shaft on transporting the platform, transports platform slidable and installs in transporting the track.
Further, the device also comprises a transportation chain bracket, a plate bending machine and an arc bracket; the output end of the transportation chain bracket for transporting the flat plate corresponds to the inlet end of the plate bending machine, and the outlet end of the plate bending machine corresponds to the upper bearing end face of the arc bracket.
Furthermore, two or four automatic welding machines are arranged in the welding track; or/and two ends of the liner core of the spiral welding machine are respectively provided with a raised positioning ring.
Due to the implementation of the technical scheme, the coiled plate is placed on the electromagnet support table, and the coiled plate position is fixed and corrected through the adsorption function of the electromagnet support table; turning the rolling plate to a set angle through the rotation function of the turning table; then the rolling plate is conveyed by a conveying platform and completely attached to the liner core; finally, carrying out straight seam welding and circular seam welding by an automatic welding machine; the method realizes the makeup welding process of the steel cylinder on the spiral welding machine equipment, and solves the problem of spiral cracks on the inner wall of the PCCP finished pipe; meanwhile, compared with the traditional makeup welding process, the labor input is reduced, and the quality control of the size and the appearance of the steel cylinder in the makeup welding process is improved.
Drawings
The specific structure of the application is given by the following figures and examples:
FIG. 1 is a schematic structural diagram of embodiment 1 of the present application;
fig. 2 is a schematic structural diagram of embodiment 3 of the present application.
Legend: 1. the steel plate bending machine comprises a wide plate bending machine body, 2 parts of straight welding seams, 3 parts of transverse bridges, 4 parts of transverse ribs, 5 parts of a liner core, 6 parts of a positioning block, 7 parts of a bellmouth steel ring, 8 parts of a socket steel ring, 9 parts of circumferential welding seams, 10 parts of a spiral welding machine, 11 parts of a welding platform, 12 parts of a welding track, 13 parts of an automatic welding machine, 14 parts of a conveying track, 15 parts of a conveying platform, 16 parts of a turnover table, 17 parts of a magnet supporting table, 18 parts of a conveying chain bracket, 19 parts of a plate bending machine, 20 parts of an arc bracket, 21 parts of a flat bracket and 22 parts of a flat plate.
Detailed Description
The present application is not limited by the following examples, and specific embodiments may be determined according to the technical solutions and practical situations of the present application.
In an embodiment, as shown in fig. 1, the PCCP steel cylinder manufacturing spiral welder plate splicing welding device comprises a turnover mechanism, a spiral welder 10 and a welding platform 11; the turnover mechanism that can be with roll up board bearing and upset operation fit on spiral welding machine 10's courage core 5 is located spiral welding machine 10's courage core 5 one side, has the welding track 12 that sets up the direction unanimous with spiral welding machine 10's courage core 5 axis direction on welding platform 11 and installs automatic weld machine 13 through welding track 12, and welding platform 11 is located courage core 5 opposite side and automatic weld machine 13's point of welding corresponds and is located courage core 5 outer wall position.
When the device works, the rolling plate is placed on the turnover mechanism, is turned over to a set angle through the turnover mechanism, is conveyed and is completely attached to the liner core 5; finally, carrying out straight seam welding and girth welding by an automatic welding machine 13; the method realizes the makeup welding process of the steel cylinder on the spiral welding machine 10 equipment, and solves the problem of spiral cracks on the inner wall of the PCCP finished pipe; meanwhile, compared with the traditional makeup welding process, the labor input is reduced, and the quality control of the size and the appearance of the steel cylinder in the makeup welding process is improved.
The automatic welding machine 13 can adopt two special welding machines for two-protection welding and is provided with a welding seam tracker.
As optimization of the embodiment, as shown in fig. 1, the turnover mechanism comprises a conveying track 14, a conveying platform 15, a turnover table 16 and an electromagnet pallet 17; the arrangement direction of the conveying track 14 is horizontal and vertical to the axial direction of the liner core 5 of the spiral welding machine 10; the electromagnet support table 17 with the upper end surface being a concave cambered surface is fixedly installed in the overturning table 16, one end, close to the liner core 5 of the spiral welding machine 10, of the overturning table 16 is connected with a hinged shaft and is rotatably installed on the conveying platform 15 through the hinged shaft, and the conveying platform 15 is slidably installed in the conveying track 14.
As the optimization of the embodiment, as shown in fig. 1, the device further comprises a transportation chain bracket 18, a plate rolling machine 19 and an arc bracket 20; the output end of the conveying chain bracket 18 for conveying the flat plate corresponds to the inlet end of the plate rolling machine 19, and the outlet end of the plate rolling machine 19 corresponds to the bearing upper end face of the circular arc bracket 20.
During installation, an original screen-opening plate-placing vehicle of the spiral welding machine 10 needs to be removed, and a plate bending machine 19, which can be a three-roller plate bending machine 19, is installed at the position; a flat bracket 21 can be arranged in front of the conveying chain bracket 18; the 6T-7T open flat plate 22 is conveyed to the flat bracket 21 by a 10T forklift, the plate bending machine 19 is adjusted to the radian required to be bent, the single open flat plate 22 is manually placed on a conveying chain bracket in front of the plate bending machine 19, the single open flat plate 22 enters the plate bending machine 19 through a conveying chain, and the bent plate automatically falls onto an arc bracket 20 behind the plate bending machine 19. And finally, manually moving the rolled plate to the electromagnet support table 17.
As optimization of the embodiment, as shown in fig. 1, two or four automatic welding machines 13 are installed in the welding track 12; or/and the two ends of the liner core 5 of the spiral welding machine 10 are respectively provided with a raised positioning ring.
The process flow of the embodiment and the optimized embodiment thereof comprises the following steps: firstly, fixing a bellmouth steel ring 7 and a socket steel ring 8 at two ends of a liner core 5 respectively, and rotating the liner core 5 to an initial position; placing the rolled plate on an electromagnet support table 17, starting the adsorption function of the electromagnet support table 17, and fixing and correcting the position of the rolled plate; starting the rotation function of the overturning platform 16, and overturning the coiled plate to a set angle; moving the rolled plate to one side of the liner core 5 along the conveying track 14 through the conveying platform 15 until the rolled plate is completely attached to the liner core 5 and is positioned between the bellmouth steel ring 7 and the socket steel ring 8; step three, fixing the coiled plate on the bellmouth steel ring 7 and the socket steel ring 8 by using a second-arc welding spot welding mode manually, canceling the adsorption function of the electromagnet support table 17, and resetting the electromagnet support table 17, the overturning table 16 and the conveying platform 15; step four, repeating the step two and the step three, attaching a second rolling plate by the same method, sequentially overlapping the rolling plates, and manually performing secondary welding spot welding at the overlapping position; fixing all the rolling plates on the liner core 5; sixthly, adjusting the rotation angle of the spiral welding machine 10, enabling the automatic operation welding machine 13 to be started after aligning the welding line, and enabling the automatic operation welding machine 13 to carry out straight seam welding along the welding track 12; step seven, adjusting the position of an automatic welding machine 13, and aligning the welding point of the automatic welding machine 13 to the welding position of the steel cylinder and the bellmouth steel ring 7 spliced by the rolling plate and the welding position of the steel cylinder and the bellmouth steel ring 7; the liner core 5 rotates, and the automatic welding machine 13 performs girth welding.
In the sixth step, during straight seam welding, the straight seam can be welded again when the rolled plate is completely fixed on the liner core 5, or welding can be started after the first straight seam rotates to a welding position, but the circular seam in the seventh step needs to be welded again after all the straight seam welding is finished, so that the welding stress on the steel cylinder body is reduced.
As shown in figure 1, in the fourth step, the lapping width of the rolling plate does not exceed 10mm.
And step six, overlapping the cut rolling plates for adjustment without the first rolling plate and the last rolling plate.
Before the application, according to statistics of data of PCCP products produced by spiral steel cylinder welding process in 2020, spiral cracks appear on 130 sections of inner walls of 150 sections of PCCP pipes, and the occurrence rate of the spiral cracks is up to 87%. 320 sections of PCCP pipes are produced by adopting the process, no spiral crack is found on the inner wall, and the occurrence rate of the spiral crack is zero.
According to the data, the plate splicing welding process of the spiral welding machine for manufacturing the PCCP steel cylinder solves the problem of spiral cracks on the inner wall of the PCCP pipe, and the product quality is greatly improved.
Taking DN3600mm steel cylinder as an example, the traditional makeup welding process needs about 15 labor investments; after the process of manufacturing the plate splicing and welding process of the spiral welding machine by adopting the PCCP steel cylinder, the labor input is only about 5 people, and the labor input is saved by more than 65 percent compared with the traditional process.
After the plate welding process of the spiral welding machine is manufactured by adopting the PCCP steel cylinder, the roundness, the appearance, the size and the quality of the obtained steel cylinder are remarkably improved compared with those of the steel cylinder manufactured by the traditional plate welding process.
As shown in fig. 2, the PCCP steel cylinder is used for manufacturing the product of the plate splicing welding device of the spiral welding machine, which comprises a wide rolled plate 1 and a narrow rolled plate; a plurality of wide rolling plates 1 and a narrow rolling plate form a complete cylinder; straight welding seams 2 parallel to the axis of the cylinder are respectively connected between the wide rolling plate 1 and between the wide rolling plate 1 and the narrow rolling plate; the inner wall of the cylinder is provided with a transverse bridge 3 which covers the straight welding seam 2 corresponding to each straight welding seam 2.
As shown in fig. 2, the inner wall of the cylinder is further provided with a transverse rib 4 parallel to the axis of the cylinder corresponding to the space between every two adjacent transverse bridges 3.
Taking the manufacturing of the DN3600 steel cylinder as an example, the DN3600 steel cylinder needs to splice 9 whole plates and a small plate with the width of about 720mm, so the DN3600 steel cylinder is provided with 10 straight welding seams 2 and 2 circular welding seams 9, thereby forming a cylindrical shape. A transverse bridge 3 with the thickness of 20mm and the width of 80mm is additionally arranged below the straight welding seam 2 on the liner core 5, and the transverse bridge 3 has the function of ensuring that the wide and narrow rolling plates are not welded with the liner core 5 when the straight welding seam 2 is welded. A phi 20 transverse rib 4 is additionally arranged between the two transverse bridges 3 at a certain interval to ensure the roundness of the finally spliced steel cylinder.
The spliced steel cylinder has no spiral crack problem, and the quality is greatly improved; the problem of spiral cracks on the inner wall of the PCCP finished pipe is solved, and the roundness, the appearance precision and the appearance quality of the steel cylinder are improved.
As shown in fig. 2, the width of the lap joint between the wide rolled sheet 1 and the wide rolled sheet 1 is not more than 10mm, and the width of the lap joint between the wide rolled sheet 1 and the narrow rolled sheet is not more than 10mm.
As shown in fig. 2, the overlapping direction of a plurality of wide rolled plates 1 and a narrow rolled plate constituting a cylinder is consistent; the transverse bridge 3 is a copper transverse bridge 3.
As shown in fig. 2, a rotatable liner core 5 is sleeved in the cylinder in a matching way; the two ends of the liner core 5 are respectively provided with a positioning block 6, the liner core 5 is fixed with a bellmouth steel ring 7 and a socket steel ring 8 through the positioning block 6, and the bellmouth steel ring 7 and the socket steel ring 8 are respectively connected with the two ends of the cylinder through a circumferential weld 9.
In this document, "upper", "lower", "front", "rear", "left", "right", and the like are used only to indicate relative positional relationships between relevant portions, and do not limit absolute positions of the relevant portions.
The technical characteristics form the embodiment of the application, the embodiment has strong adaptability and implementation effect, and unnecessary technical characteristics can be increased or decreased according to actual needs to meet the needs of different situations.
Claims (4)
1. The utility model provides a PCCP steel cylinder preparation spiral welding machine makeup welds device which characterized in that: the device comprises a turnover mechanism, a spiral welding machine and a welding platform; the turnover mechanism which can bear and overturn the rolling plate and is attached to the liner core of the spiral welding machine in a turnover mode is located on one side of the liner core of the spiral welding machine, the welding platform is provided with a welding track which is consistent with the axis direction of the liner core of the spiral welding machine in the set direction, the automatic welding machine is installed through the welding track, the welding platform is located on the other side of the liner core, and the welding point of the automatic welding machine is correspondingly located on the outer wall of the liner core.
2. The PCCP steel cylinder manufacturing spiral welder plate splicing welding device of claim 1, wherein: the turnover mechanism comprises a conveying track, a conveying platform, a turnover table and an electromagnet support table; the arrangement direction of the conveying track is horizontal and vertical to the axis direction of the liner core of the spiral welding machine; the electro-magnet saddle fixed mounting of lower concave cambered surface is personally submitted in the roll-over table in the upper end, and the roll-over table is connected with the articulated shaft and through the rotatable installation of articulated shaft on transporting the platform near the courage core of spiral welding machine, transports platform slidable and installs in transporting the track.
3. The PCCP steel cylinder manufacturing spiral welder plate splicing welding device of claim 2, wherein: the device also comprises a transportation chain bracket, a plate bending machine and an arc bracket; the output end of the transportation chain bracket for transporting the flat plate corresponds to the inlet end of the plate bending machine, and the outlet end of the plate bending machine corresponds to the upper bearing end face of the arc bracket.
4. The PCCP steel cylinder manufacturing spiral welder plate splicing welding device of claim 2 or 3, wherein: two or four automatic welding machines are arranged in the welding track; or/and two ends of the liner core of the spiral welding machine are respectively provided with a raised positioning ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122632446.4U CN217701744U (en) | 2021-10-31 | 2021-10-31 | Plate splicing and welding device of spiral welding machine for manufacturing PCCP steel cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122632446.4U CN217701744U (en) | 2021-10-31 | 2021-10-31 | Plate splicing and welding device of spiral welding machine for manufacturing PCCP steel cylinder |
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| CN217701744U true CN217701744U (en) | 2022-11-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202122632446.4U Active CN217701744U (en) | 2021-10-31 | 2021-10-31 | Plate splicing and welding device of spiral welding machine for manufacturing PCCP steel cylinder |
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| CN (1) | CN217701744U (en) |
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