Portable welding device for marine ranch breeding platform

By designing limiting and positioning mechanisms, the portable welding device can be quickly adapted to steel pipes of different diameters, solving the timeliness problem of welding operations on marine ranching platforms and improving welding accuracy and reliability.

CN121732931APending Publication Date: 2026-03-27SINOHYDRO BUREAU 4 (YANGJIANG) OFFSHORE EQUIP CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-12-22
Publication Date
2026-03-27

AI Technical Summary

Technical Problem

Existing portable welding equipment lacks quick-fit fixtures for steel pipes of different diameters on marine ranching platforms, resulting in long preparation times before operation and making it difficult to meet the timeliness requirements for emergency repairs on the platform.

Method used

A portable welding device was designed, which adopts a limiting mechanism, a positioning mechanism, a first lead screw and a screw block. The position of the positioning mechanism and the steel pipe is adjusted by rotating the first handwheel. The positioning mechanism and the limiting mechanism work together to fix the steel pipe, so as to realize the rapid clamping and positioning of steel pipes of different specifications.

Benefits of technology

It improves the versatility and adaptability of the device, ensures welding quality, reduces shaking and offset during steel pipe welding, and improves welding accuracy and reliability.

✦ Generated by Eureka AI based on patent content.

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Abstract

The invention provides a portable welding device for construction of a marine ranch breeding platform, belongs to the technical field of marine ranch breeding platforms, and solves the technical problem of rapid adaptation of clamps for steel pipes with different pipe diameters of breeding components. A portable welding device for a marine ranch breeding platform comprises a movable table and a separation frame, the two ends of the top of the separation frame are each fixedly connected with two supporting frames, the tops of the two supporting frames on the same side are each fixedly connected with the same rectangular frame, and a first lead screw is rotationally connected between the two ends of the interior of each rectangular frame; and each first lead screw is in threaded connection with a threaded connection block. According to the steel pipe welding device, steel pipes of different specifications can be fixed and adjusted, the universality and adaptability of the device are improved, the welding requirements of the steel pipes of different sizes in a marine ranch breeding platform can be met, shaking and deviation of the steel pipes in the welding process are reduced, and therefore the quality of welding joints is ensured; and the welding precision and reliability are improved.
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Description

Technical Field

[0001] This invention belongs to the technical field of marine ranching platforms, and relates to welding devices, particularly a portable welding device for marine ranching platforms. Background Technology

[0002] Portable welding equipment for marine ranching platforms is an auxiliary device specifically designed for building or maintaining aquaculture platforms in marine environments. As an important facility for mariculture, marine ranching platforms are mostly assembled from metal components (such as steel pipe frames, net cage frames, etc.). Although they meet the strength requirements for welding operations in the manufacturing workshop and can withstand the large loads when positioning steel columns and the local stress during the welding process, they still need to cope with the impact of wind and waves and long-term seawater corrosion in the marine service environment. In the high humidity and high salt spray marine environment, corrosion, loosening or cracking problems are prone to occur at the joints of components, requiring regular welding maintenance to ensure the structural safety of the platform.

[0003] When existing general-purpose portable welding devices are used in marine ranching scenarios, the core problems are insufficient environmental adaptability and low operating efficiency. The maintenance of aquaculture platforms is mostly an emergency operation, and traditional devices lack quick-fit clamps for aquaculture components such as steel pipes of different diameters, resulting in long preparation time before operation and difficulty in meeting the timeliness requirements of emergency repairs on the platform. Therefore, a portable welding device for marine ranching platforms was designed. Summary of the Invention

[0004] The purpose of this invention is to address the aforementioned problems in existing technologies by proposing a portable welding device for marine ranching platforms. The technical problem this invention aims to solve is: how to achieve rapid adaptation of clamps for steel pipes of different diameters used in aquaculture components.

[0005] The objective of this invention can be achieved through the following technical solutions: A portable welding device for a marine ranching platform includes a mobile platform and a separation frame. Two support frames are fixedly connected to both ends of the top of the separation frame. A rectangular frame is fixedly connected to the top of each of the two support frames on the same side. A first lead screw is rotatably connected between the two ends inside each rectangular frame. A screw block is screwed onto each first lead screw, and a lead screw nut adapted to the first lead screw is fixedly fitted onto each screw block. A first handwheel is rotatably connected to one end of each first lead screw, passing through the rectangular frame. A positioning mechanism is provided on the top of each of the two screw blocks. The positioning mechanism includes a horizontal plate fixedly connected to the top of the screw block, with insertion holes at both ends of the horizontal plate, and a U-shaped rod slidably inserted between the two insertion holes. Both ends of the U-shaped rod have strip-shaped vertical holes, and multiple stop bars are rotatably connected at equal distances between the two sides of each strip-shaped vertical hole. A second lead screw is screwed to the middle of the top of the U-shaped rod, and a lead screw nut adapted to the second lead screw is fixedly sleeved in the middle of the U-shaped rod. A second handwheel is fixedly connected to the top of the second lead screw, and a second tripod is rotatably connected to the bottom of the second lead screw. A first tripod is fixedly connected to the middle of the top of the horizontal plate.

[0006] The working principle of this invention is as follows: by setting up a positioning mechanism, it is easy to quickly fit different steel pipes together. Then, by rotating the second handwheel, the steel pipe is clamped and fixed in conjunction with the first tripod and the second tripod. By rotating the first handwheel, the position of the positioning mechanism and the steel pipe can be adjusted, thereby realizing the positioning and connection of the steel pipe.

[0007] Each of the two horizontal plates is provided with a limiting mechanism on one side that is close to each other. The limiting mechanism includes a slide rod fixedly connected to both ends of one side of the horizontal plate. The same sliding plate is slidably sleeved on the circumferential surface of the two slide rods. Both ends of the sliding plate are provided with round holes that are adapted to the slide rods. The other ends of the two slide rods are fixedly connected with protrusions. A second spring is sleeved on both slide rods between the sliding plate and the horizontal plate. The top of both ends of the sliding plate is fixedly connected with side rods, and the bottom of the other ends of the two side rods is fixedly connected with cams.

[0008] With the above structure, pressing the sliding plate allows the horizontal plate to quickly separate from the U-shaped rod.

[0009] The limiting mechanism also includes four guide rods that are fixedly connected to both ends of the horizontal plate. The same outer baffle is fixedly connected to the outer side of the two guide rods on the same side. The same L-shaped plate is slidably sleeved on the circumferential surface of the two guide rods on the same side. The two L-shaped plates are provided with round holes that are adapted to the guide rods. A third spring is sleeved on each guide rod between the outer baffle and the L-shaped plate.

[0010] The limiting mechanism also includes a slanted locking block fixedly connected to one side of the two L-shaped plates that are close to each other. The slanted locking block is adapted to the stop bar, and slots adapted to the slanted locking block are opened at both ends of the horizontal plate. A triangular hole is opened at the top of each L-shaped plate, and each cam is slidably connected in the adjacent triangular hole.

[0011] With the above structure, the guide rod and the third spring enable the two L-shaped plates to move and reset stably.

[0012] Two slots are provided at one end of the separation frame, and two L-shaped blocks are fixedly connected to the top end of the moving platform, with each L-shaped block fitting into the adjacent slot. A fixing block is fixedly connected to the middle of the top of the moving platform away from the L-shaped card block, and two positioning rods are slidably sleeved on the fixing block. The fixing block has a round hole that matches the positioning rod. The two positioning rods are fixedly connected to the same limiting block at the end near the separation frame, and the two positioning rods are fixedly connected to the same T-shaped card block at the other end. The T-shaped card block matches the separation frame. A first spring is sleeved on both positioning rods between the T-shaped card block and the fixing block. The above structure, through the cooperation of L-shaped blocks and slots and T-shaped blocks, makes it easy for the separation frame to be separated from and connected to the moving platform.

[0013] A handrail is fixedly connected to one end of the top of the mobile platform, and four corners at the bottom of the mobile platform are fixedly connected to casters with brakes. An arc controller is fixedly connected to the middle of the top of the mobile platform, and an arc welding gun is connected to the arc controller via a wiring harness.

[0014] Compared with the prior art, the portable welding device for marine ranching platforms of the present invention has the following advantages: In this invention, by employing a limiting mechanism, a positioning mechanism, a first lead screw, and a screw block, the position of the positioning mechanism and the steel pipe can be adjusted by rotating the first handwheel. After the steel pipe is fixed in conjunction with the positioning and limiting mechanisms, rotating the two first handwheels again allows the two positioning mechanisms to adjust the position of the steel pipe until they are aligned for welding. This effectively solves the problems mentioned in the background art, thereby enabling the fixing and adjustment of steel pipes of different specifications. This increases the versatility and adaptability of the device, meets the welding requirements of steel pipes of different sizes in marine ranching platforms, reduces the shaking and displacement of the steel pipe during the welding process, and thus ensures the quality of the welded joint, improving the precision and reliability of the welding. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of a portable welding device for a marine ranching platform proposed in this invention. Figure 2 This is a schematic diagram of the top structure of the mobile platform of a portable welding device for a marine ranching aquaculture platform proposed in this invention; Figure 3 This invention proposes a portable welding device for marine ranching platforms. Figure 2 An enlarged structural diagram at point A; Figure 4 This is a schematic diagram of the top structure of the detachable frame of a portable welding device for a marine ranching platform proposed in this invention; Figure 5 This is a schematic diagram of the rectangular frame structure of a portable welding device for a marine ranching platform proposed in this invention. Figure 6 This is a schematic diagram of the positioning mechanism of a portable welding device for a marine ranching platform proposed in this invention; Figure 7 This is a schematic diagram of the limiting mechanism of a portable welding device for a marine ranching platform proposed in this invention.

[0016] In the diagram, 1. Moving platform; 101. Handrail; 102. Caster wheel with brake; 103. L-shaped locking block; 104. Arc controller; 105. Arc welding torch; 2. Separation frame; 201. Slot; 3. Fixing block; 301. Positioning rod; 302. First spring; 303. T-shaped locking block; 304. Limiting block; 4. Support frame; 5. Rectangular frame; 501. First lead screw; 502. Screw connection block; 503. First handwheel; 6. Positioning... Mechanism; 601, Horizontal plate; 602, First tripod; 603, U-shaped rod; 604, Stop bar; 605, Second tripod; 606, Second lead screw; 607, Second handwheel; 7, Limiting mechanism; 701, Sliding rod; 702, Second spring; 703, Sliding plate; 704, Side rod; 705, Outer baffle; 706, Guide rod; 707, Third spring; 708, L-shaped plate; 709, Triangular hole; 710, Angled locking block. Detailed Implementation

[0017] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0018] like Figures 1-7As shown, a portable welding device for a marine ranching platform includes a mobile platform 1 and a separation frame 2. Two support frames 4 are fixedly connected to both ends of the top of the separation frame 2. A rectangular frame 5 is fixedly connected to the top of each of the two support frames 4 on the same side. A first lead screw 501 is rotatably connected between the two ends inside each rectangular frame 5. A screw block 502 is screwed onto each first lead screw 501. A lead screw nut adapted to the first lead screw 501 is fixedly fitted onto each screw block 502. A first handwheel 503 is rotatably connected to one end of each first lead screw 501, passing through the rectangular frame 5. A positioning mechanism 6 is provided on the top of each screw block 502. The positioning mechanism 6 includes... A horizontal plate 601 is fixedly connected to the top of the screw block 502. Both ends of the horizontal plate 601 have insertion holes, and the same U-shaped rod 603 is slidably inserted between the two insertion holes. Both ends of the U-shaped rod 603 have strip-shaped vertical holes, and multiple stop bars 604 are rotatably connected at equal distances between the two sides of each strip-shaped vertical hole. A second lead screw 606 is screwed to the middle of the top of the U-shaped rod 603. A lead screw nut that matches the second lead screw 606 is fixedly sleeved in the middle of the U-shaped rod 603. A second handwheel 607 is fixedly connected to the top of the second lead screw 606, and a second tripod 605 is rotatably connected to the bottom of the second lead screw 606. A first tripod 602 is fixedly connected to the middle of the top of the horizontal plate 601.

[0019] In this invention, a limiting mechanism 7 is provided on the side of the two horizontal plates 601 that are close to each other. The limiting mechanism 7 includes a slide rod 701 fixedly connected to both ends of one side of the horizontal plate 601. The same sliding plate 703 is slidably sleeved on the circumferential surface of the two slide rods 701. Both ends of the sliding plate 703 are provided with round holes that are adapted to the slide rods 701. The other end of the two slide rods 701 is fixedly connected with a protrusion. A second spring 702 is sleeved on both slide rods 701 between the sliding plate 703 and the horizontal plate 601. The top of both ends of the sliding plate 703 is fixedly connected with a side rod 704, and the bottom of the other end of the two side rods 704 is fixedly connected with a cam.

[0020] In this invention, the limiting mechanism 7 also includes four guide rods 706 that are fixedly connected to both ends of the horizontal plate 601. The outer side of the two guide rods 706 on the same side is fixedly connected to the same outer baffle 705. The circumferential surface of the two guide rods 706 on the same side is slidably fitted with the same L-shaped plate 708. The two L-shaped plates 708 are each provided with a circular hole that matches the guide rod 706. A third spring 707 is fitted between the outer baffle 705 and the L-shaped plate 708 of each guide rod 706.

[0021] In this invention, the limiting mechanism 7 also includes a slanted locking block 710 fixedly connected to the two L-shaped plates 708 on the side close to each other. The slanted locking block 710 is adapted to the stop bar 604, and slots adapted to the slanted locking block 710 are opened at both ends of the horizontal plate 601. A triangular hole 709 is opened at the top of each L-shaped plate 708, and each cam is slidably connected in the adjacent triangular hole 709.

[0022] In this invention, the separation frame 2 has two slots 201 at one end, and the top end of the moving platform 1 is fixedly connected to two L-shaped blocks 103, and each L-shaped block 103 is adapted to the adjacent slot 201.

[0023] In this invention, a fixing block 3 is fixedly connected to the middle of the top of the moving platform 1 away from the L-shaped locking block 103, and two positioning rods 301 are slidably sleeved on the fixing block 3. The fixing block 3 has a round hole that matches the positioning rods 301. The two positioning rods 301 are fixedly connected to the same limiting block 304 at one end near the separation frame 2, and the two positioning rods 301 are fixedly connected to the same T-shaped locking block 303 at the other end. The T-shaped locking block 303 matches the separation frame 2. A first spring 302 is sleeved on both positioning rods 301 between the T-shaped locking block 303 and the fixing block 3.

[0024] In this invention, a handrail 101 is fixedly connected to one end of the top of the mobile platform 1, and four corners of the bottom of the mobile platform 1 are fixedly connected to universal wheels 102 with brakes. An arc controller 104 is fixedly connected to the middle of the top of the mobile platform 1, and an arc welding gun 105 is connected to the arc controller 104 through a wire harness.

[0025] The working principle of this invention is as follows: When in use, the device is easily moved by pushing the handle 101. Compared to traditional welding equipment, the entire device is very compact. When welding is required, the arc controller 104 can be energized, allowing the arc welding gun 105 to operate normally, thus enabling welding of steel components. When welding a steel pipe frame, if positioning of the steel pipe is required, pulling the T-shaped locking block 303 compresses the first spring 302. At this time, the separation frame 2 is not limited by the T-shaped locking block 303, allowing the separation frame 2 to separate from the moving table 1. Rotating the first handwheel 503 on one side causes the first lead screw 501 to rotate, driving the screw block 502 and the positioning mechanism 6 to move, so that the offset positions of the two positioning mechanisms 6 are the same as those of the steel pipe. Then, pressing each sliding plate 703 causes the sliding plate 703 to move... The side rod 704 moves with the cam, causing the cam to slide on the hypotenuse of the triangular hole 709. This causes the L-shaped plate 708, along with the inclined locking block 710, to move outward, separating the inclined locking block 710 from the stop rod 604. At this point, the U-shaped rod 603 can be pulled out. After the U-shaped rod 603 is fitted onto the steel pipe, the limiting mechanism 7, in conjunction with the second tripod 605 and the first tripod 602 of the U-shaped rod 603, clamps the steel pipe. By rotating the second handwheel 607, the second tripod 605 can press the steel pipe, preventing it from shaking. This achieves the positioning of the steel pipe. Then, rotating the two first handwheels 503 causes the two positioning mechanisms 6 to gradually move the steel pipe until it is aligned, at which point welding can be performed. Through the setting of the positioning mechanism 6, with the cooperation of the first tripod 602, the second tripod 605, and the second lead screw 606, steel pipes of different sizes can be positioned.

[0026] In summary, in this invention, the separation frame 2 and the moving platform 1 are easy to connect and separate, so that when steel pipe welding is required and the steel pipe needs to be positioned, the positioning mechanism 6 and the limiting mechanism 7 can be pressed to quickly clamp and position steel pipes of different thicknesses. With the rotation of the first handwheel 503, the two positioning mechanisms 6 bring the steel pipes closer to each other until they are aligned, and then welding can be carried out.

[0027] The specific embodiments described herein are merely illustrative of the spirit of the invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of the invention or exceeding the scope defined by the appended claims.

Claims

1. A portable welding device for a mariculture farming platform, comprising a mobile table (1) and a separate frame (2), characterized in that, The separating frame (2) top both ends are fixedly connected with two support frames (4), same side two supporting frames (4) top are fixedly connected with same rectangle frame (5), and both ends between each rectangle frame (5) inside are rotatably connected with first screw rod (501), and each first screw rod (501) is screw-connected with screw block (502) on each first screw rod (501), each screw block (502) is fixedly sleeved with screw nut that is compatible with first screw rod (501) on each screw block (502), and first hand wheel (503) is rotatably penetrated through rectangle frame (5) and is fixedly connected with first hand wheel (503) on one end of each first screw rod (501), two screw blocks (502) top are provided with positioning mechanism (6), positioning mechanism (6) includes the horizontal plate (601) that is fixedly connected on the top of screw block (502), and both ends of horizontal plate (601) are provided with insertion hole, and same U-shaped rod (603) is slidably inserted between two insertion holes, the strip-shaped vertical hole is set up in both ends of U-shaped rod (603), and a plurality of blocking rods (604) are rotatably connected with equal distance between each strip-shaped vertical hole side, second screw rod (606) is screw-connected in the top middle part of U-shaped rod (603), the screw nut that is compatible with second screw rod (606) is fixedly sleeved with the second screw rod (606) in the middle part of U-shaped rod (603), second hand wheel (607) is fixedly connected with second hand wheel (607) on the top of second screw rod (606), and second tripod (605) is rotatably connected with second tripod (605) on the bottom of second screw rod (606), first triangular frame (602) is fixedly connected in the top middle part of horizontal plate (601).

2. A portable welding device for a mariculture farming platform according to claim 1, characterized in that, Two horizontal plates (601) are provided with limiting mechanism (7) on one side of each other, limiting mechanism (7) includes the slide bar (701) that is fixedly connected in both ends of one side of horizontal plate (601), the same slide plate (703) is slidably sleeved on the circumferential surface of two slide bars (701), the round hole that is compatible with slide bar (701) is set up in both ends of slide plate (703), the convex block is fixedly connected with two slide bars (701) on the other end, and the second spring (702) is sleeved between the slide plate (703) and the horizontal plate (601) of two slide bars (701), the side rod (704) is fixedly connected with the top of both ends of slide plate (703), and the cam is fixedly connected with the bottom of the other end of two side rods (704).

3. A portable welding apparatus for a mariculture farming platform according to claim 2, wherein The limiting mechanism (7) further includes four guide rods (706) that are respectively fixedly connected in both ends of horizontal plate (601), same side two guide rods (706) are fixedly connected with same outer baffle (705) on the outside, same side two guide rods (706) are slidably sleeved with same L-shaped plate (708) on the circumferential surface, the round hole that is compatible with guide rod (706) is set up in two L-shaped plates (708), and the third spring (707) is sleeved between the outer baffle (705) and the L-shaped plate (708) of each guide rod (706).

4. A portable welding apparatus for use with a mariculture farming platform according to claim 3, wherein The limiting mechanism (7) further comprises an inclined clamping block (710) fixedly connected to the side of the two L-shaped plates (708) close to each other, the inclined clamping block (710) is matched with the blocking rod (604), and the two ends of the horizontal plate (601) are provided with the insertion slots matched with the inclined clamping block (710), and the top of each L-shaped plate (708) is provided with a triangular hole (709), and each cam is slidingly connected in the triangular hole (709) close to each other.

5. A portable welding device for a mariculture farming platform according to claim 1, characterized in that, The moving table (1) is provided with two L-shaped clamping blocks (103) at one end of the top, and each L-shaped clamping block (103) is matched with the clamping groove (201) close to each other.

6. A portable welding apparatus for a mariculture farming platform according to claim 1, wherein The moving table (1) is provided with two L-shaped clamping blocks (103) at one end of the top, and each L-shaped clamping block (103) is matched with the clamping groove (201) close to each other.

7. A portable welding device for a mariculture farming platform according to claim 1, characterized in that, The moving table (1) is provided with two L-shaped clamping blocks (103) at one end of the top, and each L-shaped clamping block (103) is matched with the clamping groove (201) close to each other. The moving table (1) is provided with two L-shaped clamping blocks (103) at one end of the top, and each L-shaped clamping block (103) is matched with the clamping groove (201) close to each other.