CN220575056U - Automatic preheating device for pipeline welding - Google Patents
Automatic preheating device for pipeline welding Download PDFInfo
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- CN220575056U CN220575056U CN202320466136.6U CN202320466136U CN220575056U CN 220575056 U CN220575056 U CN 220575056U CN 202320466136 U CN202320466136 U CN 202320466136U CN 220575056 U CN220575056 U CN 220575056U
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- slider
- screw rod
- preheating device
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- 238000003466 welding Methods 0.000 title claims abstract description 42
- 238000010438 heat treatment Methods 0.000 claims abstract description 25
- 230000005540 biological transmission Effects 0.000 claims abstract description 8
- 230000005611 electricity Effects 0.000 claims description 2
- 230000035882 stress Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
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- Butt Welding And Welding Of Specific Article (AREA)
Abstract
The utility model relates to the technical field of pipeline welding equipment, in particular to an automatic preheating device for pipeline welding; the device comprises a base, wherein sliding parts are connected to two sides of the base, a first moving seat is connected to the upper side of the sliding parts, a first guide rail perpendicular to the sliding parts is arranged on the first moving seat, a guide rod positioned on the outer side of the first guide rail is further arranged on the first moving seat, a linear air cylinder and an air cylinder fixing seat are further arranged on the other outer side of the first moving seat, a first sliding block is slidingly connected to the first guide rail, a second moving seat is connected to the upper side of the first sliding block, a transmission plate is further connected to one side, close to the linear air cylinder, of the second moving seat, a limiting block is further connected to one side, close to the guide rod, of the second moving seat, a second guide rail parallel to the first guide rail is arranged on the second moving seat, a second sliding block is slidingly connected to the second guide rail, and a third moving seat is connected to the upper side of the second sliding block; the automatic preheating device for pipeline welding provided by the utility model can automatically preheat pipelines, improves the heating efficiency and reduces the labor cost.
Description
Technical Field
The utility model relates to the technical field of pipeline welding equipment, in particular to an automatic preheating device for pipeline welding.
Background
According to the construction process, important components, alloy steel and thick parts are required to be welded, and the welding and thick parts are required to be preheated before welding, wherein the main functions of the preheating before welding are as follows: 1. the preheating can slow down the cooling speed after welding, is beneficial to the escape of diffusion hydrogen in weld metal and avoids generating hydrogen induced cracks; meanwhile, the quenching degree of the welding line and the heat affected zone is reduced, and the crack resistance of the welding joint is improved. 2. The preheating can reduce welding stress, uniformly and locally preheat or wholly preheat, and can reduce the temperature difference (also called temperature gradient) between welded workpieces in a welding area, so that on one hand, the welding stress is reduced, and on the other hand, the welding strain rate is reduced, thereby being beneficial to avoiding welding cracks. 3. The preheating can reduce the restraint degree of the welding structure, is particularly obvious for reducing the restraint degree of the corner joint, and the crack occurrence rate is reduced along with the increase of the preheating temperature, and the selection of the preheating temperature and the interlayer temperature is not only related to the chemical components of steel materials and welding rods, but also related to the rigidity of the welding structure, the welding method, the environmental temperature and the like, and is determined by comprehensively considering the factors. In addition, uniformity of the preheating temperature in the thickness direction of the steel sheet and uniformity in the weld zone have an important influence on reduction of the welding stress. The width of the local preheating is determined according to the restraint condition of the welded workpiece, and is generally three times the wall thickness around the welding seam area and is not less than 150-200 mm. If preheating is uneven, not only welding stress is not reduced, but also welding stress is increased. Common preheating modes include open fire heating and induction heating, and the method is efficient relative to the open fire heating induction heating process, and meanwhile has minimum heat loss to the surrounding, and can improve welding quality.
Most of the existing pipeline welding preheating devices are manually operated to heat, the temperature control is unstable, and the labor cost is increased while the thermal stress is uneven during preheating.
Disclosure of Invention
The purpose of the utility model is that: the automatic preheating device for pipeline welding can automatically preheat pipelines, improves heating efficiency and reduces labor cost.
In order to achieve the above purpose, the present utility model adopts the following technical scheme: the utility model provides a pipeline welding automatic preheating device, includes the base, the base both sides are connected with the slider, and the slider top is connected with first removal seat, be provided with the first guide rail of perpendicular to slider on the first removal seat, still be provided with the guide arm that is located the first guide rail outside on the first removal seat, still be provided with sharp cylinder and cylinder fixing base on the other outside, sliding connection has first slider on the first guide rail, and the top of first slider is connected with the second and removes the seat, the second removes and still is connected with the drive plate on the one side that the seat is close to sharp cylinder, is close to one side of guide arm and still is connected with the stopper, is provided with the second guide rail parallel with first guide rail on the second removal seat, sliding connection second slider on the second guide rail, and the second slider top is connected with the third and removes the seat, and the second removes the front end on the adjacent two sides of seat still is provided with adjusting part with the third and removes the upper end of seat and be provided with heating element.
Further, the adjusting component comprises a screw rod nut, a screw rod, a shaft sleeve and a hand wheel, wherein the screw rod nut is connected to the front end of the middle part above the second moving seat, the shaft sleeve is connected to the front end of the middle part above the third moving seat, the tail end of the screw rod is in threaded connection with the screw rod nut, the head end of the screw rod is in rotary connection with the shaft sleeve, and the hand wheel is connected to the end face after the head end of the screw rod extends outwards.
Further, heating element includes power supply box, backup pad and heating coil, and the backup pad is fixed by three square boards and is constituteed the door-shaped space, and heating coil is arranged in the backup pad inner wall, and the power supply box sets up in the backup pad top surface, and the power supply box is connected with the heating coil electricity.
Further, the transmission plate is arranged at the top point of the side surface of the second movable seat far away from the first movable seat, and a piston rod of the linear cylinder is fixedly connected with the transmission plate.
Further, the limiting block is arranged on the bottom surface of the second movable seat and is close to the first movable seat, and the limiting block and the transmission plate are respectively positioned on the left side and the right side of the second movable seat.
Further, the sliding piece adopts a linear guide rail and a sliding block.
The beneficial effects of the utility model are as follows: install heating element on the third removes the seat, through two vertically guide rail mechanism of lower extreme sliding connection and a horizontal bottom plate, heating element can follow horizontal and vertical multistage removal for the base, carries out preheating treatment to the pipeline through the space in the backup pad, and the pipeline after preheating is accomplished makes the preheating remove the heating space through base and first removal seat lateral shifting to weld, simple structure convenient to use.
Drawings
Fig. 1 is a front view of the present utility model.
Fig. 2 is a left side view of the present utility model.
Fig. 3 is a right side view of the present utility model.
Fig. 4 is a top view of the present utility model.
Fig. 5 is a bottom view of the present utility model.
In the figure: 1. a base; 2. a slider; 3. a first movable seat; 4. a first guide rail; 5. a guide rod; 6. a straight line cylinder; 7. a cylinder fixing seat; 8. a first slider; 9. a second movable seat; 10. a drive plate; 11. a limiting block; 12. a second guide rail; 13. a second slider; 14. a third movable seat; 15. an adjustment assembly; 16. a heating assembly; 17. a screw nut; 18. a screw rod; 19. a shaft sleeve; 20. a hand wheel; 21. a power supply box; 22. and a support plate.
Description of the embodiments
The utility model is further illustrated by the following description in conjunction with the accompanying drawings and specific embodiments.
Examples: referring to fig. 1 and 4, the automatic preheating device for pipe welding according to the present utility model includes a base 1, a lightening hole is formed above the base 1 and is horizontally disposed, a sliding member 2 is parallel mounted on the front and rear sides of the base 1, the sliding member 2 is connected with a first moving seat 3 above the base 1 in a combined manner of a linear guide and a sliding block, so that the first moving seat 3 and the base 1 can freely move in the horizontal direction, a first guide rail 4 is parallel mounted on the left and right sides of the upper surface of the first moving seat 3, a first sliding block 8 is slidingly connected on the first guide rail 4, a guide rod 5 and a linear cylinder 6 are mounted on the outer side of the first guide rail 4, wherein the guide rod 5 is located on the right side of the outer side of the first guide rail 4, the linear cylinder 6 is located on the left side of the outer side of the first guide rail 4, one end of the guide rod 5 is flush with the rear side of the first moving seat 3 and is parallel to the first guide rail 4, the linear cylinder 6 is parallel to the first guide rail 4 and parallel to the back side surface of the first movable seat 3, the cylinder fixing seat 7 fixed on the first movable seat 3 is arranged in the middle of the linear cylinder 6, the second movable seat 9 is fixedly connected above the first sliding block 8, the second guide rail 12 is arranged on the left side and the right side of the upper surface of the second movable seat 9 in parallel, the second sliding block 13 is slidingly connected on the second guide rail 12, the third movable seat 14 is fixedly connected above the second sliding block 13, the limit block 11 is arranged on the right side of the bottom surface of the second movable seat 9, the center opening of the limit block 11 is slidingly connected with the guide rod 5, the transmission plate 10 is fixedly connected with the end part of a piston rod of the linear cylinder 6, the screw nut 17 is arranged at the center of the upper surface of the second movable seat 9, the axis of the screw nut 17 is parallel to the second guide rail 12, the L-shaped shaft sleeve 19 is arranged on the upper surface and the front side surface of the third movable seat 14, the axis of the shaft sleeve 19 is aligned with the axis of the screw nut 17, the screw rod 18 is installed in the screw rod, the hand wheel 20 is fixedly connected to the front end face of the screw rod 18, the shaft sleeve 19 and the screw nut 17 relatively move through rotating the hand wheel 20, the moving amount is determined by the rotating amount of the hand wheel 20, the fine adjustment of the displacement distance between the third moving seat 14 and the second moving seat 9 is facilitated, the second moving seat 9 and the first moving seat 3 are driven by the linear cylinder 6 to relatively move, the moving distance is limited on the guide rod 5 by the limiting block 11 on the other side, the limiting stroke can be changed by adjusting the nut position on the guide rod 5, the whole moving seat freely slides along the base 1, the top face of the third moving seat 14 is vertically provided with a square plate, the top is connected by the square plate, a supporting plate 22 structure is formed, a power box 21 is installed on the top face of the supporting plate 22, the heating coil and the linear cylinder 6 are driven and controlled by the power box 21, and a pipeline needing to be preheated is placed in a space between the supporting plates 22.
Working principle and using steps: before use, the base 1 is parallelly fixed on one side of a pipeline to be welded, the linear cylinder 6 is driven to eject through the power line, the first movable seat 3 and the second movable seat 9 are enabled to be outwards extended in a displacement mode, after preliminary positioning, the extending distance between the second movable seat 9 and the third movable seat 14 is finely adjusted through the hand wheel 20, the pipeline can be located at the center of the inside of the support plate 22, the sliding part 2 is moved after the position is fixed, the center of the support plate 22 is sleeved at the center of the pipeline welding position, the heating coil is started to preheat the pipeline inside, after preheating is completed, the sliding part 2 is transversely moved to enable the whole body to slide out of the pipeline preheating part along the base 1, and the welding machine is used for welding, so that the welding preheating process is completed.
According to the utility model, the heating component is arranged on the third movable seat, the two longitudinal guide rail mechanisms and the transverse bottom plate are connected through the lower end in a sliding manner, the heating component can be moved out transversely and longitudinally in multiple stages relative to the base, the pipeline is preheated through the space in the supporting plate, and the preheated pipeline is enabled to remove the heating space through the transverse movement of the base and the first movable seat after the preheating is finished, so that the welding is performed, and the device is simple in structure and convenient to use.
The foregoing is merely illustrative of the present utility model and not restrictive, and other modifications and equivalents thereof may occur to those skilled in the art without departing from the spirit and scope of the present utility model.
Claims (6)
1. An automatic preheating device for pipeline welding, which is characterized in that: including the base, the base both sides are connected with the slider, and the slider top is connected with first removal seat, be provided with the first guide rail of perpendicular to slider on the first removal seat, still be provided with the guide arm that is located the first guide rail outside on the first removal seat, still be provided with sharp cylinder and cylinder fixing base on the other outside, sliding connection has first slider on the first guide rail, and the top of first slider is connected with the second and removes the seat, still be connected with the drive plate on the one side that the second removes the seat and is close to sharp cylinder, be connected with the stopper near one side of guide arm still, be provided with the second guide rail parallel with first guide rail on the second removal seat, sliding connection second slider on the second guide rail, the second slider top is connected with the third and removes the seat, and the second removes the front end that seat and third removed the adjacent two sides of seat still is provided with adjusting part, the upper end that the third removed the seat is provided with heating element.
2. The automatic preheating device for pipe welding according to claim 1, wherein: the adjusting component comprises a screw rod nut, a screw rod, a shaft sleeve and a hand wheel, wherein the screw rod nut is connected to the front end of the middle part above the second moving seat, the shaft sleeve is connected to the front end of the middle part above the third moving seat, the tail end of the screw rod is in threaded connection with the screw rod nut, the head end of the screw rod is in rotary connection with the shaft sleeve, and the hand wheel is connected to the end face after the head end of the screw rod extends outwards.
3. The automatic preheating device for pipe welding according to claim 1, wherein: the heating element includes power supply box, backup pad and heating coil, and the backup pad is fixed by three square boards and is constituteed door-shaped space, and heating coil is arranged in the backup pad inner wall, and the power supply box sets up in the backup pad top surface, and the power supply box is connected with the heating coil electricity.
4. The automatic preheating device for pipe welding according to claim 1, wherein: the transmission plate is arranged at the top point of the side surface of the second movable seat far away from the first movable seat, and a piston rod of the linear cylinder is fixedly connected with the transmission plate.
5. The automatic preheating device for pipe welding according to claim 1, wherein: the limiting block is arranged on the bottom surface of the second movable seat and is close to the first movable seat, and the limiting block and the transmission plate are respectively positioned on the left side and the right side of the second movable seat.
6. The automatic preheating device for pipe welding according to claim 1, wherein: the sliding piece adopts a linear guide rail and a sliding block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320466136.6U CN220575056U (en) | 2023-03-13 | 2023-03-13 | Automatic preheating device for pipeline welding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320466136.6U CN220575056U (en) | 2023-03-13 | 2023-03-13 | Automatic preheating device for pipeline welding |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220575056U true CN220575056U (en) | 2024-03-12 |
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ID=90108637
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320466136.6U Active CN220575056U (en) | 2023-03-13 | 2023-03-13 | Automatic preheating device for pipeline welding |
Country Status (1)
| Country | Link |
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| CN (1) | CN220575056U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118003002A (en) * | 2024-04-09 | 2024-05-10 | 中铁建工集团有限公司 | Wall post aluminum alloy template bearing diagonal construction equipment |
-
2023
- 2023-03-13 CN CN202320466136.6U patent/CN220575056U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118003002A (en) * | 2024-04-09 | 2024-05-10 | 中铁建工集团有限公司 | Wall post aluminum alloy template bearing diagonal construction equipment |
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