A welding fixing device for a double-seal flange connection plastic coated composite steel pipe

Abstract

This utility model relates to the field of plastic-coated composite steel pipe technology, specifically a welding and fixing device for connecting plastic-coated composite steel pipes with double-sealed flanges. It includes a fixing frame, on which are coaxially staggered ends of the plastic-coated composite steel pipe and a double-sealed flange. The ends of the plastic-coated composite steel pipe are circumferentially arranged on the fixing frame, with one end of each rotating frame rotatably connected to the fixing frame and the other end of each rotating frame rotatably connected to a pressure roller. It also includes a driving mechanism for synchronously rotating multiple rotating frames. The double-sealed flange is circumferentially arranged on the fixing frame with at least two L-shaped plates. This utility model facilitates precise and rapid alignment of the ends of the double-sealed flange and the plastic-coated composite steel pipe, ensuring the accuracy of welding the double-sealed flange connection to the plastic-coated composite steel pipe.

Description

Technical Field

[0001] This utility model relates to the field of plastic-coated composite steel pipe technology, specifically a welding and fixing device for connecting plastic-coated composite steel pipes with double-sealed flanges. Background Technology

[0002] The ends of plastic-coated composite steel pipes are generally connected using double-sealed flanges. Therefore, a double-sealed flange needs to be welded to the end of the plastic-coated composite steel pipe. In use, the double-sealed flange is typically pressed onto the end of the plastic-coated composite steel pipe, and then spot-welded to the end of the plastic-coated composite steel pipe at multiple locations. However, manual adjustment can easily lead to subtle, hard-to-detect alignment deviations, resulting in inaccurate connections in subsequent use. Therefore, a welding and fixing device for connecting plastic-coated composite steel pipes with double-sealed flanges is designed to facilitate precise and rapid alignment of the double-sealed flange and the end of the plastic-coated composite steel pipe, ensuring the accuracy of the welding. Utility Model Content

[0003] (a) Technical problems to be solved

[0004] To address the shortcomings of existing technologies, this utility model provides a welding and fixing device for connecting plastic-coated composite steel pipes with double-sealed flanges, which facilitates precise and rapid assembly of the ends of the double-sealed flanges and plastic-coated composite steel pipes, ensuring the accuracy of welding the double-sealed flanges to the plastic-coated composite steel pipes.

[0005] (II) Technical Solution

[0006] To achieve the above objectives, this utility model provides the following technical solution: a welding and fixing device for a double-sealed flange connection of a plastic-coated composite steel pipe, comprising a fixing frame, wherein the fixing frame is provided with a plastic-coated composite steel pipe end-center clamping structure and a double-sealed flange center-center clamping structure coaxially staggered front and rear, the plastic-coated composite steel pipe end-center clamping structure comprising at least three sets of rotating frames circumferentially arranged on the fixing frame, one end of each set of rotating frames being rotatably connected to the fixing frame, and the other end of each set of rotating frames being rotatably connected to a pressure roller, and further comprising a driving mechanism for driving multiple sets of rotating frames to rotate synchronously, the double-sealed flange center-center clamping structure comprising at least two sets of L-shaped plates circumferentially arranged on the fixing frame, wherein the L-shaped plates are connected to L-shaped arc blocks adapted to the double-sealed flange through a feeding mechanism.

[0007] Preferably, the driving mechanism includes an adjusting motor fixedly mounted on a fixed frame for rotating one of the rotating frames, sprockets fixedly mounted on each of the rotating frames, the sprockets being connected by chain drive, and guide wheels cooperating with the chain guide on both sides of each sprocket, the guide wheels being rotatably connected to the fixed frame.

[0008] Preferably, the outer side of the chain is provided with a protective cover that is fixedly installed on the fixed frame.

[0009] Preferably, the feeding mechanism includes a drive cylinder fixedly mounted on an L-shaped plate, and the L-shaped arc block is fixedly mounted on the output shaft of the drive cylinder.

[0010] Preferably, the output shaft of the drive cylinder is fixedly connected to the L-shaped arc block by a slider, and the drive cylinder is provided with a guide groove that slides and cooperates with the slider.

[0011] Preferably, an anti-slip sleeve is fixedly installed on the pressure roller.

[0012] (III) Beneficial Effects

[0013] Compared with the prior art, this utility model provides a welding and fixing device for connecting plastic-coated composite steel pipes with double sealing flanges, which has the following advantages:

[0014] This welding and fixing device for connecting a double-sealed flange to a plastic-coated composite steel pipe utilizes a coaxially staggered end-center clamping structure for the plastic-coated composite steel pipe and a double-sealed flange center-center clamping structure. First, the double-sealed flange is fixed in place. Then, a fixing frame is fitted onto the end of the plastic-coated composite steel pipe, ensuring the double-sealed flange, fixed by the center-center clamping structure, is tightly pressed against the end of the plastic-coated composite steel pipe. The plastic-coated composite steel pipe is then clamped in the center by the end-center clamping structure, allowing for precise and rapid alignment of the double-sealed flange and the end of the plastic-coated composite steel pipe. At least one component of the end-center clamping structure... Three sets of rotating frames with pressure rollers can be driven to rotate simultaneously by a drive mechanism, allowing the pressure rollers on at least three sets of rotating frames to quickly and simultaneously clamp the plastic-coated composite steel pipe in the center. Due to at least two sets of L-shaped arc clamps, the double-sealed flange can be quickly clamped and fixed by the feeding mechanism. The L-shaped plate setting can separate the L-shaped arc clamps from the pressure rollers by a certain distance, which facilitates subsequent welding operations. This welding and fixing device for connecting the double-sealed flange to the plastic-coated composite steel pipe facilitates the precise and rapid splicing of the ends of the double-sealed flange and the plastic-coated composite steel pipe, ensuring the accuracy of welding the double-sealed flange to the plastic-coated composite steel pipe. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall disassembled structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 3 This is a structural schematic diagram of the present invention from other perspectives;

[0018] Figure 4 This utility model Figure 3 A magnified schematic diagram of the local structure at point A;

[0019] Figure 5 This is a top view schematic diagram of the structure of this utility model.

[0020] The following are labels in the attached diagram: 1. Fixed frame; 2. Rotating frame; 3. Pressure roller; 4. Anti-slip sleeve; 5. L-shaped arc block; 6. L-shaped plate; 7. Drive cylinder; 8. Slider; 9. Adjusting motor; 10. Sprocket; 11. Chain; 12. Guide wheel; 13. Protective cover; 14. Guide groove. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Example:

[0023] Please see Figure 1-5 A welding and fixing device for connecting plastic-coated composite steel pipes with double-sealed flanges includes a fixing frame 1. The fixing frame 1 is provided with a plastic-coated composite steel pipe end-center clamping structure and a double-sealed flange center-center clamping structure, which are coaxially staggered front and rear. The plastic-coated composite steel pipe end-center clamping structure includes at least three sets of rotating frames 2 circumferentially arranged on the fixing frame 1. One end of each set of rotating frames 2 is rotatably connected to the fixing frame 1, and the other end of each set of rotating frames 2 is rotatably connected to a pressure roller 3. The device also includes a driving mechanism for driving multiple sets of rotating frames 2 to rotate synchronously. The double-sealed flange center-center clamping structure includes at least two sets of L-shaped plates 6 circumferentially arranged on the fixing frame 1. The L-shaped plates 6 are connected to L-shaped arc blocks 5 adapted to the double-sealed flanges through a feeding mechanism. Furthermore, the length of the L-shaped arc blocks 5 can be customized. It can be shortened to only limit the double-sealed flanges, or lengthened to fix the plastic-coated composite steel pipes simultaneously.

[0024] Specifically, the drive mechanism includes an adjusting motor 9 fixedly mounted on the fixed frame 1 for rotating one of the rotating frames 2. Multiple rotating frames 2 are each fixedly mounted with sprockets 10, and these sprockets 10 are connected by a chain 11. Each sprocket 10 has a guide wheel 12 on both sides that guides the chain 11. The guide wheel 12 is rotatably connected to the fixed frame 1. Starting the adjusting motor 9 causes its output shaft to rotate clockwise or counterclockwise, thereby driving one of the rotating frames 2 to rotate clockwise or counterclockwise. Through the cooperation of the chain 11 and the multiple sprockets 10, it facilitates the synchronous clockwise or counterclockwise rotation of other sets of rotating frames 2, thereby driving multiple pressure rollers 3 to clamp and fix the plastic-coated composite steel pipe. These rollers can also rotate circumferentially around the plastic-coated composite steel pipe, facilitating the accurate positioning of the double-sealed flange and the plastic-coated composite steel pipe for subsequent precise welding.

[0025] Specifically, a protective cover 13 is fixedly installed on the fixed frame 1 on the outer side of the chain 11. The protective cover 13 is provided to protect the chain 11 and prevent it from being bumped or knocked.

[0026] Specifically, the feeding mechanism includes a drive cylinder 7 fixedly mounted on an L-shaped plate 6, and an L-shaped arc block 5 fixedly mounted on the output shaft of the drive cylinder 7. The drive cylinder 7 facilitates the feeding motion of the L-shaped arc block 5.

[0027] Specifically, the output shaft of the drive cylinder 7 is fixedly connected to the L-shaped arc block 5 by a slider 8, and the drive cylinder 7 is provided with a guide groove 14 that slides and cooperates with the slider 8. Through the cooperation of the slider 8 and the guide groove 14, the L-shaped arc block 5 is easily guided, increasing the stability of the guide sliding cooperation.

[0028] Specifically, an anti-slip sleeve 4 is fixedly installed on the pressure roller 3. The anti-slip sleeve 4 increases the anti-slip properties between the pressure roller 3 and the plastic-coated composite steel pipe, ensuring the rotation grip and stability around the plastic-coated composite steel pipe.

[0029] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A welding and fixing device for connecting plastic-coated composite steel pipes with double-sealed flanges, characterized in that: The system includes a fixed frame (1), on which a plastic-coated composite steel pipe end-center clamping structure and a double-sealed flange center-center clamping structure are provided, which are coaxially staggered. The plastic-coated composite steel pipe end-center clamping structure includes at least three sets of rotating frames (2) arranged circumferentially on the fixed frame (1). One end of each set of rotating frames (2) is rotatably connected to the fixed frame (1), and the other end of each set of rotating frames (2) is rotatably connected to a pressure roller (3). The system also includes a driving mechanism for driving multiple sets of rotating frames (2) to rotate synchronously. The double-sealed flange center-center clamping structure includes at least two sets of L-shaped plates (6) arranged circumferentially on the fixed frame (1). The L-shaped plates (6) are connected to L-shaped arc blocks (5) adapted to the double-sealed flanges through a feeding mechanism.

2. The welding and fixing device for connecting plastic-coated composite steel pipes with double-sealed flanges according to claim 1, characterized in that: The driving mechanism includes an adjusting motor (9) fixedly mounted on a fixed frame (1) for rotating one of the rotating frames (2). A sprocket (10) is fixedly mounted on each of the rotating frames (2), and the sprockets (10) are connected by a chain (11). A guide wheel (12) is provided on both sides of each sprocket (10) to guide and cooperate with the chain (11). The guide wheel (12) is rotatably connected to the fixed frame (1).

3. The welding and fixing device for connecting plastic-coated composite steel pipes with double-sealed flanges according to claim 2, characterized in that: The outer side of the chain (11) is provided with a protective cover (13) that is fixedly installed on the fixed frame (1).

4. The welding and fixing device for connecting plastic-coated composite steel pipes with double-sealed flanges according to claim 3, characterized in that: The feeding mechanism includes a drive cylinder (7) fixedly mounted on an L-shaped plate (6), and the L-shaped arc block (5) is fixedly mounted on the output shaft of the drive cylinder (7).

5. The welding and fixing device for connecting plastic-coated composite steel pipes with double-sealed flanges according to claim 4, characterized in that: The output shaft of the drive cylinder (7) is fixedly connected to the L-shaped arc block (5) by a slider (8), and the drive cylinder (7) is provided with a guide groove (14) that slides and cooperates with the slider (8).

6. The welding and fixing device for connecting plastic-coated composite steel pipes with double-sealed flanges according to claim 5, characterized in that: An anti-slip sleeve (4) is fixedly installed on the pressure roller (3).

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