A production line of composite material steel pipe pile

Abstract

The utility model discloses a kind of production lines of composite material steel pipe pile, it is related to steel pipe pile production technical field, comprising: steel coil feeding mechanism, for unfolding steel coil shape steel plate to be processed;Numerical control leveling machine, for eliminating steel plate surface stress and leveling steel plate;Numerical control shearing machine, for the end of steel plate is started and cut;Laser welding equipment, for different steel coil welded into an organic whole by cutting, according to preset requirement determines the steel coil plate integral welding of N length;Delivery machine, for the steel plate of preliminary welding forming is delivered to next process;In the utility model, the welding depth range of laser internal welding unit is 0-H, then laser external welding unit is welded to the welding seam of steel pipe column un-welded portion again welding procedure, the welding depth range of laser external welding unit is H-2H, form double-layer airtight weld structure, further improve the strength of 10%-20% at weld joint.

Description

Technical Field

[0001] This utility model relates to the field of steel pipe pile production technology, and more specifically, to a production line for composite material steel pipe piles. Background Technology

[0002] Steel pipe piles are a type of foundation support structure widely used in civil engineering, marine engineering, and building construction. They are typically hollow cylindrical components made of steel (such as carbon steel, alloy steel, or composite materials). Their core characteristics are high strength, corrosion resistance, and weldability, which provide stable and durable load-bearing capacity for various projects.

[0003] In the field of steel pipe pile manufacturing, existing production processes mostly adopt cold bending forming. This cold bending forming method involves vertically bending a flat steel plate into a barrel shape and then welding it with vertical welds. However, in actual use, the vertical welds are subjected to unilateral impact force after being impacted by seawater. The weld position itself is relatively fragile for the steel pipe pile body. After long-term seawater impact, the surface of the vertical weld is prone to corrosion and leakage. At the same time, in the traditional steel pipe pile rounding process, after the welding process, the roller machine squeezes the weld joint, which increases the longitudinal stress at the weld joint of the steel pipe pile, resulting in a decrease in the strength of the steel pipe pile after forming. Traditional single-layer welds (such as submerged arc welding and gas shielded welding) are prone to defects such as porosity and slag inclusions. The weld penetration is insufficient, resulting in a decrease in the strength of the weld joint. Due to the material characteristics of composite material steel pipe piles, a production method with higher welding quality is required.

[0004] Therefore, in order to solve the above-mentioned technical problems, this application proposes a production line for composite material steel pipe piles. Utility Model Content

[0005] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a production line for composite material steel pipe piles.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a production line for composite material steel pipe piles, comprising:

[0007] A steel coil feeding mechanism is used to unwind coiled steel sheets for processing.

[0008] CNC leveling machine is used to eliminate surface stress and level steel plates;

[0009] CNC shearing machines are used to perform initial shearing on the ends of steel plates.

[0010] Laser welding equipment is used to weld different sheared steel coils into one piece;

[0011] A delivery machine is used to deliver pre-welded steel plates to the next process.

[0012] A steel pipe forming machine is used to helically rotate and bend a steel plate delivered by a delivery machine into a steel pipe pile blank, and the weld is a helical weld on the surface of the steel pipe pile blank.

[0013] The laser internal welding unit and the laser external welding unit are used for the synchronous welding of the inner and outer layers of the butt weld at the welding end of the steel pipe pile blank, respectively.

[0014] The quality inspection instrument is used to continuously monitor the integrity and defects of the weld seams of the steel pipe pile;

[0015] CNC plasma cutting machine, used to cut finished steel pipe piles to a preset length;

[0016] Automatic pipe-laying machine is used to transport finished steel pipe piles after cutting.

[0017] Preferably, the laser internal welding unit and the laser external welding unit are arranged in a front-to-back configuration.

[0018] Preferably, the laser welding head output end of the inner laser welding unit is at the bottom of the weld, and the laser welding head output end of the outer laser welding unit is inside the weld. The main form is that the inner laser welding unit performs the undercut on the weld, and the outer laser welding unit fills the weld, forming a double-layer sealed weld structure.

[0019] Preferably, the laser internal welding unit directly performs inner layer welding pre-reinforcement on the spiral weld after the steel plate is spirally formed by the steel pipe forming machine.

[0020] Preferably, there is an angle between the steel pipe forming device and the laser internal welding unit.

[0021] Preferably, the automatic tube feeding machine is subsequently equipped with an inkjet printer, a packing machine, and a stacking machine.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] In this invention, the steel plate is first bent into a steel pipe pile blank using a steel pipe forming machine 6. After welding, the formed steel pipe pile exhibits stronger resistance to seawater impact compared to the traditional cold-bending and welding steel pipe piles mentioned in the background art. Vertical welds are prone to corrosion and cracking after prolonged impact, while spiral welds distribute the impact force evenly across the steel pipe pile surface, preventing the weld from being the only part impacted by seawater. Furthermore, during the rounding process, traditional cold-bending and welding... The steel pipe pile needs to be rounded by squeezing the weld seam. The spiral-formed steel pipe pile can eliminate the need for squeezing and rounding the weld seam after welding. There is no need to release excess stress at the weld joint, which improves the welding quality. Then, the bottom of the steel pipe pile weld seam is first welded by the laser inner welding unit 7. The welding depth range of the laser inner welding unit 7 is 0-H. Then, the laser outer welding unit 8 performs the welding process on the unwelded part of the steel pipe pile weld seam. The welding depth range of the laser outer welding unit 8 is H-2H, forming a double-layer sealed weld seam structure, which further improves the strength of the weld joint by 10%-20%. Attached Figure Description

[0024] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0025] Figure 1 This is a schematic diagram of the production line of this utility model;

[0026] Figure 2 This is a diagram showing the state changes of the steel pipe pile in the steel pipe forming device in this utility model;

[0027] Figure 3 This is a schematic diagram of the welding positions of the laser internal welding unit and the laser external welding unit in this utility model.

[0028] 1. Steel coil feeding mechanism; 2. CNC leveling machine; 3. CNC shearing machine; 4. Laser welding equipment; 5. Delivery machine; 6. Steel pipe forming machine; 7. Laser internal welding unit; 8. Laser external welding unit; 9. Quality inspection instrument; 10. CNC plasma cutting machine; 11. Automatic pipe unloading machine. Detailed Implementation

[0029] like Figures 1-3 As shown, this utility model provides a production line for composite material steel pipe piles, comprising:

[0030] The steel coil feeding mechanism 1 is used to unfold the steel coil to be processed. It adopts a dual-station hydraulic lifting platform and is suitable for composite material steel coils with a thickness of 6-20mm and a width of 1200-2000mm. The unfolded steel coil is transported to the CNC platform.

[0031] CNC leveling machine 2, used to eliminate surface stress and level steel plates, with a leveling pressure of 120-200 tons;

[0032] CNC shearing machine 3 is used to perform initial shearing on the ends of steel plates to make the ends flat;

[0033] Laser welding equipment 4 is used to weld different sheared steel coils into one piece, and to weld steel coils of length N into one piece according to preset requirements;

[0034] The delivery machine 5 can be a conveying device used to deliver the pre-welded steel plate to the next process;

[0035] like Figure 2 As shown, the steel pipe forming device 6 is used to spirally rotate and bend the steel plate delivered by the delivery machine 5 into a steel pipe pile blank, and the weld is a spiral weld on the surface of the steel pipe pile blank, such as... Figure 1 As shown, there is an angle between the steel pipe forming device 6 and the laser internal welding unit 7. When the steel pipe forming device 6 rotates the steel plate for spiral forming, the formed steel pipe pile will automatically form a certain angle and enter the laser internal welding unit 7 for inner layer welding. The inner diameter of the steel pipe pile blank can be adjusted by controlling the angle between the steel pipe forming device 6 and the laser internal welding unit 7.

[0036] The steel plate is bent into a steel pipe pile blank by the steel pipe forming machine 6. After welding, the formed steel pipe pile has a stronger resistance to seawater impact compared with the steel pipe pile formed by traditional cold bending and welding mentioned in the background technology. After long-term impact, the surface of the vertical weld is prone to corrosion and cracking. The spiral weld can distribute the impact force evenly to the surface of the steel pipe pile, so that only the weld is impacted by seawater. At the same time, during the rounding process, the traditional cold bending process requires the weld to be squeezed to round the steel pipe pile after welding. The spiral formed steel pipe pile does not require the weld to be squeezed to round after welding. There is no need to release excess stress at the weld joint, which further improves the welding quality.

[0037] Laser internal welding unit 7 and laser external welding unit 8 are used for the synchronous welding of the inner and outer layers of the butt weld at the welding end of the steel pipe pile blank, respectively. Laser internal welding unit 7 and laser external welding unit 8 are arranged in a front-to-back configuration. Laser internal welding unit 7 directly performs inner layer welding pre-reinforcement on the spiral weld after the steel plate is spirally formed by the steel pipe forming device. The laser welding head output end of laser internal welding unit 7 is at the bottom of the weld, while the laser welding head output end of laser external welding unit 8 is inside the weld. The main form is that laser internal welding unit 7 performs the root pass of the weld, and laser external welding unit 8 fills the weld, forming a double-layer sealed weld structure. Figure 3As shown, the overall depth of the weld is 2H. The laser inner welding unit 7 first welds the bottom of the steel pipe pile weld. The welding depth range of the laser inner welding unit 7 is 0-H. Then the laser outer welding unit 8 performs the welding process on the unwelded part of the steel pipe column weld. The welding depth range of the laser outer welding unit 8 is H-2H.

[0038] The bottom of the weld seam of the steel pipe pile is first welded by the laser internal welding unit 7, with a welding depth range of 0-H. Then, the unwelded part of the weld seam of the steel pipe pile is welded by the laser external welding unit 8, with a welding depth range of H-2H, forming a double-layer sealed weld seam structure and improving the strength of the weld joint by 10%-20%.

[0039] The quality inspection instrument 9 is used to continuously detect the integrity and defects of the weld of the steel pipe pile. The detection data is fed back to the laser inner welding unit 7 and the laser outer welding unit 8 through the PLC controller (existing technology, which will not be described in detail here) to adjust the laser power.

[0040] CNC plasma cutting machine 10 is used to cut finished steel pipe piles to a preset length;

[0041] Automatic pipe laying machine 11 is used to transport the finished steel pipe piles after cutting. Automatic pipe laying machine 11 is subsequently equipped with inkjet printer, packaging machine and stacking machine. The inkjet printer, packaging machine and stacking machine are used to perform inkjet printing, packaging and stacking processes on the formed steel pipe piles.

[0042] The production steps of a composite material steel pipe pile production line are as follows:

[0043] Step 1: The steel coil to be processed is unrolled through the steel coil feeding mechanism 1 and the unrolled steel coil is transported to the CNC platform;

[0044] The second step is to eliminate the surface stress of the steel plate and level it using a CNC leveling machine 2. The leveled steel plate is then cut off by a CNC shearing machine 3 to cut the excess part at the end, so that the steel plate is cut into the required size.

[0045] The third step is to transfer the steel plates on the production line to the laser welding equipment 4 for transverse welding at both ends, and then combine and weld each steel plate according to the preset length N.

[0046] Step 4: The welded steel plate is fed into the steel pipe forming machine 6 via the delivery machine 5.

[0047] Step 5: The steel plate entering the steel pipe forming machine 6 will be bent and twisted into a barrel shape, i.e., a steel pipe pile blank. At this time, the steel pipe pile blank forms a bending angle with the initial entry into the steel pipe forming machine 6 when it exits the steel pipe forming machine 6.

[0048] Step 6: The steel pipe blank enters the laser internal welding unit 7 for the bottom layer welding of the weld. The overall depth of the weld is 2H, and the welding depth range of the laser internal welding unit 7 is 0-H.

[0049] Step 7: The steel pipe blank enters the laser external welding unit 8 for two-layer welding of the weld seam. The overall depth of the weld seam is 2H, and the welding depth range of the laser external welding unit 8 is H-2H.

[0050] Step 8: After welding, the integrity of the steel pipe pile weld is inspected using a quality inspection instrument 9.

[0051] Step 9: If the quality inspection instrument 9 detects a defective steel pipe pile, the CNC plasma cutting machine 10 will cut the defective part and have the staff remove the substandard steel pipe pile. At the same time, the CNC plasma cutting machine 10 will divide the steel pipe pile according to the preset length.

[0052] Step 10: The finished steel pipe piles are laid down using the automatic pipe-laying machine 11;

[0053] Step 11: The steel pipe piles to be laid down are marked, packaged and stacked.

[0054] The parts not covered in this utility model are the same as or can be implemented using existing technologies.

[0055] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model in any way. Those skilled in the art can readily implement this utility model based on the accompanying drawings and the above description. However, any modifications, alterations, or equivalent variations made by those skilled in the art without departing from the scope of the utility model's technical solution, utilizing the disclosed technical content, are considered equivalent embodiments of this utility model. Furthermore, any equivalent changes, alterations, or variations made to the above embodiments based on the essential technology of this utility model are still within the protection scope of this utility model's technical solution.

Claims

1. A production line for composite material steel pipe piles, characterized in that, include: A steel coil feeding mechanism (1) is used to unroll a coil of steel plate to be processed; CNC leveling machine (2) is used to eliminate surface stress of steel plates and level the steel plates; CNC shearing machine (3) is used to perform initial shearing on the ends of steel plates; Laser welding equipment (4) is used to weld different sheared steel coils into one piece; Delivery machine (5) is used to deliver the pre-welded steel plate to the next process; The steel pipe forming device (6) is used to spirally rotate and bend the steel plate delivered by the delivery machine (5) into a steel pipe pile blank, and the weld is a spiral weld on the surface of the steel pipe pile blank. The laser inner welding unit (7) and the laser outer welding unit (8) are used for the synchronous welding of the inner and outer layers of the butt weld at the welding end of the steel pipe pile blank, respectively. The quality inspection instrument (9) is used to continuously inspect the integrity and defects of the weld of the steel pipe pile; CNC plasma cutting machine (10) is used to cut finished steel pipe piles to a preset length; Automatic pipe laying machine (11) is used to transport the finished steel pipe piles after cutting to the production line.

2. The production line for composite material steel pipe piles according to claim 1, characterized in that: The laser internal welding unit (7) and the laser external welding unit (8) are arranged in a front-to-back manner.

3. The production line for composite material steel pipe piles according to claim 2, characterized in that: The laser welding head output end of the laser inner welding unit (7) is at the bottom of the weld, and the laser welding head output end of the laser outer welding unit (8) is inside the weld. The main form is that the laser inner welding unit (7) applies a base coat to the weld, and the laser outer welding unit (8) fills the weld, forming a double-layer sealed weld structure.

4. The production line for composite material steel pipe piles according to claim 3, characterized in that: The laser internal welding unit (7) directly performs inner layer welding pre-reinforcement on the spiral weld after the steel plate is spirally formed by the steel pipe forming machine (6).

5. The production line for composite material steel pipe piles according to claim 1, characterized in that: An angle is provided between the steel pipe forming machine (6) and the laser internal welding unit (7).

6. The production line for composite material steel pipe piles according to claim 1, characterized in that: The automatic tube feeding machine (11) is subsequently equipped with an inkjet printer, a packing machine and a stacking machine.

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