Natural gas pipeline welding device

Abstract

The utility model belongs to the technical field of welding, and particularly relates to a natural gas pipeline welding device which comprises a guide assembly and a clamping rotating tool arranged on the guide assembly, a pipeline is arranged on the clamping rotating tool, a coaxial rotation limiting assembly is arranged on the guide assembly, and a welding rod is arranged on the coaxial rotation limiting assembly. The coaxial rotation limiting assembly comprises a supporting plate fixed to the guiding assembly, a centering and jacking mechanism is arranged on the supporting plate, the positions of the left limiting mechanism and the right limiting mechanism can be conveniently adjusted by arranging the centering and jacking mechanism, and therefore centering of the to-be-welded pipeline is achieved, the coaxiality of the pipeline is guaranteed, and the welding efficiency is improved. The rotating rings in the left limiting mechanism and the right limiting mechanism can rotate in the clamping grooves, so that the limiting cylinders can rotate along with rotation of the pipeline, rotation of the pipeline is prevented from being hindered, the whole device is simple in structure and convenient to operate, and the working efficiency and the welding quality of natural gas pipeline welding can be effectively improved.

Description

Technical Field

[0001] This utility model belongs to the field of welding technology, specifically relating to a welding device for natural gas pipelines. Background Technology

[0002] Welding is a crucial task in the laying and maintenance of natural gas pipelines. Existing natural gas pipeline welding equipment often presents several problems. For example, it is difficult to ensure the coaxiality of the pipes to be welded, leading to poor weld quality; the pipes are prone to shaking or displacement during welding, affecting the stability and accuracy of the weld. Furthermore, traditional welding equipment has poor adaptability to pipes of different diameters, requiring frequent tooling changes and reducing work efficiency. Therefore, a new type of natural gas pipeline welding equipment is needed to solve these problems. Utility Model Content

[0003] To address the problems mentioned in the background section, this invention provides a natural gas pipeline welding device to solve the problems of difficulty in ensuring pipeline coaxiality, easy pipeline shaking during welding, and poor adaptability to pipelines of different diameters in the prior art.

[0004] A natural gas pipeline welding device includes a guide assembly and a clamping and rotating fixture disposed on the guide assembly. The clamping and rotating fixture is provided with a pipeline, and the guide assembly is provided with a coaxial rotation limiting assembly.

[0005] The coaxial rotation limiting assembly includes a support plate fixed on the guide assembly, and a centering and tightening mechanism is provided on the support plate. A left limiting mechanism and a right limiting mechanism are movably provided on the centering and tightening mechanism.

[0006] The centering and tightening mechanism includes a U-shaped support fixedly mounted on the support plate, with a lead screw and a pair of guide slide rods connected between the left and right ends of the U-shaped support via bearings.

[0007] A geared motor is installed on the U-shaped support. The rotor of the geared motor is fixedly connected to the lead screw, and the threads at the left and right ends of the lead screw are in opposite directions.

[0008] A left threaded sleeve and a right threaded sleeve are screwed onto the threads in different directions at the left and right ends of the lead screw, and a left slide sleeve and a right slide sleeve that slide left and right are respectively sleeved on the left and right ends of the slide rod.

[0009] A left support seat is fixed on the left threaded sleeve and the left slide cylinder, and a right support seat is fixed on the right threaded sleeve and the right slide cylinder. A limit seat is provided on both the left support seat and the right support seat, and a slot is provided on the limit seat.

[0010] The left and right limiting mechanisms are the same size and are arranged symmetrically on the left and right sides.

[0011] The left limiting mechanism includes a rotating ring that is engaged inside a slot. The rotating ring rotates inside the slot. A limiting cylinder is provided inside the rotating ring, and a sliding rod that slides up and down is provided on the limiting cylinder.

[0012] A locking bolt is screwed into the limiting cylinder through a threaded hole. A limiting arc plate is movably mounted on the bottom end of the locking bolt through a bearing. The bottom end of the sliding rod is fixed on the limiting arc plate.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] By setting up a centering and tightening mechanism, the positions of the left and right limit mechanisms can be easily adjusted, thereby achieving centering of the pipe to be welded, ensuring the coaxiality of the pipe, and improving the welding quality.

[0015] The rotating rings in the left and right limiting mechanisms can rotate within the slots, allowing the limiting cylinder to rotate with the pipe, thus avoiding obstruction to the pipe's rotation. At the same time, the limiting arc plate can be adjusted in position using locking bolts to accommodate pipes of different diameters, improving the device's adaptability.

[0016] The entire device has a simple structure and is easy to operate, which can effectively improve the efficiency and quality of natural gas pipeline welding. Attached Figure Description

[0017] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This is a partial structural schematic diagram of the present invention;

[0020] Figure 3 This is a schematic diagram of the coaxial rotation limiting component of this utility model;

[0021] Figure 4 This is a schematic diagram of the centering and tightening mechanism of this utility model;

[0022] Figure 5 This is a schematic diagram of the left limiting mechanism of this utility model;

[0023] In the picture:

[0024] 1. Mixing tank; 11. Inlet; 12. Outlet;

[0025] 2. Stirring assembly; 21. Top cover; 22. Gear motor; 221. Drive gear; 222. Driven gear; 23. Stirring shaft; 231. Water spray hole; 24. Stirring blades; 241. Main stirring blades; 242. Secondary stirring blades;

[0026] 3. Lifting components;

[0027] 4. Deflector plate. Detailed Implementation

[0028] 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.

[0029] Example 1

[0030] like Figures 1-5 As shown;

[0031] A natural gas pipeline welding device includes a guide assembly 1 and a clamping and rotating fixture 2 disposed on the guide assembly 1. A pipeline 3 is disposed on the clamping and rotating fixture 2, and a coaxial rotation limiting assembly 4 is disposed on the guide assembly 1.

[0032] This implementation plan addresses the technical problems existing in the prior art, such as the difficulty in ensuring the coaxiality of the pipeline to be welded, leading to poor welding quality; the pipeline is prone to shaking or displacement during welding, affecting the stability and accuracy of the welding. Furthermore, traditional welding equipment has poor adaptability to pipelines of different diameters, requiring frequent tooling changes and reducing work efficiency. In practical terms, this problem is clearly real and difficult to solve. Therefore, to address this technical problem, a natural gas pipeline welding device is provided.

[0033] like Figures 1-5 As shown in the figure;

[0034] In conjunction with the above, the coaxial rotation limiting assembly 4 includes a support plate 41 fixed on the guide assembly 1, a centering and tightening mechanism 42 is provided on the support plate 41, and a left limiting mechanism 43 and a right limiting mechanism 44 are movably provided on the centering and tightening mechanism 42.

[0035] The centering and tightening mechanism 42 includes a U-shaped support 421 fixedly mounted on the support plate 41, a lead screw 422 connected between the left and right ends of the U-shaped support 421 via bearings, and a pair of guide slide rods 423.

[0036] A geared motor is installed on the U-shaped support 421. The rotor of the geared motor is fixedly connected to the lead screw 422, and the threads at the left and right ends of the lead screw 422 are opposite.

[0037] A left threaded sleeve 424 and a right threaded sleeve 425 are screwed onto the threads in different directions at the left and right ends of the lead screw 422, respectively. A left sliding sleeve 426 and a right sliding sleeve 427 that slide left and right are respectively sleeved on the left and right ends of the slide rod 423.

[0038] A left support seat 428 is fixed on the left threaded sleeve 424 and the left slide cylinder 426, and a right support seat 429 is fixed on the right threaded sleeve 425 and the right slide cylinder 427. A limit seat 45 is provided on both the left support seat 428 and the right support seat 429, and a slot 451 is provided on the limit seat 45.

[0039] The left limit mechanism 43 and the right limit mechanism 44 are the same size and are arranged symmetrically on the left and right.

[0040] The left limiting mechanism 43 includes a rotating ring 431 that is engaged inside the slot 451. The rotating ring 431 rotates inside the slot 451. A limiting cylinder 432 is provided inside the rotating ring 431. A sliding rod 433 is provided on the limiting cylinder 432.

[0041] A locking bolt 434 is screwed into the limiting cylinder 432 through a threaded hole. The bottom end of the locking bolt 434 is movably provided with a limiting arc plate 435 through a bearing. The bottom end of the slide rod 433 is fixed on the limiting arc plate 435.

[0042] Installation and Commissioning: Install the guide assembly 1 on a suitable work platform, ensuring its stability and reliability. Install the clamping rotary fixture 2 on the guide assembly 1 and adjust its position. Place the pipe 3 to be welded on the clamping rotary fixture 2 and clamp and fix the pipe in place using the fixture. Fix the support plate 41 of the coaxial rotation limit assembly 4 to the guide assembly 1, ensuring the support plate is securely installed.

[0043] Centering Operation: Start the reduction motor on the U-shaped support 421, which drives the lead screw 422 to rotate. Since the thread directions at the left and right ends of the lead screw 422 are opposite, the left threaded sleeve 424 and the right threaded sleeve 425 will move in opposite directions on the lead screw 422. At the same time, the left slide cylinder 426 and the right slide cylinder 427 slide on the slide rod 423, thereby driving the left support seat 428 and the right support seat 429 to move, so that the left limit mechanism 43 and the right limit mechanism 44 move closer to or further away from the pipeline, thus achieving pipeline centering.

[0044] Limiting Operation: Based on the pipe diameter, loosen the locking bolt 434, adjust the height of the limiting arc plate 435 to ensure tight contact with the outer wall of the pipe, and then tighten the locking bolt 434 to fix the limiting arc plate 435. During welding, when the pipe rotates under the drive of the clamping rotating fixture 2, the rotating ring 431 rotates within the slot 451, and the limiting cylinder 432 and the limiting arc plate 435 rotate accordingly, limiting the pipe and preventing it from shaking or displacing.

[0045] Welding process: After completing the centering and limiting operations, welding of the natural gas pipeline can begin. After welding is completed, disassemble the device and remove the welded pipeline by reversing the steps.

[0046] Finally, it should be noted that the above are merely preferred embodiments of this utility model and are not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A natural gas pipeline welding device, comprising a guide assembly (1) and a clamping and rotating fixture (2) disposed on the guide assembly (1), wherein a pipeline (3) is disposed on the clamping and rotating fixture (2), and a coaxial rotation limiting assembly (4) is disposed on the guide assembly (1), characterized in that: The coaxial rotation limiting assembly (4) includes a support plate (41) fixed on the guide assembly (1), and a centering and tightening mechanism (42) is provided on the support plate (41). A left limiting mechanism (43) and a right limiting mechanism (44) are movably provided on the centering and tightening mechanism (42).

2. The natural gas pipeline welding apparatus according to claim 1, characterized in that: The centering and tightening mechanism (42) includes a U-shaped support (421) fixedly mounted on the support plate (41), a lead screw (422) is provided between the left and right ends of the U-shaped support (421) via bearings, and a pair of guide slides (423).

3. The natural gas pipeline welding apparatus according to claim 2, characterized in that: A geared motor is installed on the U-shaped support (421). The rotor of the geared motor is fixedly connected to the lead screw (422), and the threads at the left and right ends of the lead screw (422) are opposite.

4. A natural gas pipeline welding apparatus according to claim 2, characterized in that: The lead screw (422) has a left threaded sleeve (424) and a right threaded sleeve (425) screwed onto the threads in different directions at the left and right ends respectively. The slide rod (423) has a left slide cylinder (426) and a right slide cylinder (427) that slide left and right respectively.

5. A natural gas pipeline welding apparatus according to claim 4, characterized in that: A left support seat (428) is fixed on the left threaded sleeve (424) and the left slide (426), and a right support seat (429) is fixed on the right threaded sleeve (425) and the right slide (427). A limit seat (45) is provided on both the left support seat (428) and the right support seat (429), and a slot (451) is provided on the limit seat (45).

6. A natural gas pipeline welding apparatus according to claim 1, characterized in that: The left limiting mechanism (43) and the right limiting mechanism (44) are the same size and are arranged symmetrically on the left and right.

7. A natural gas pipeline welding apparatus according to claim 1, characterized in that: The left limiting mechanism (43) includes a rotating ring (431) that is engaged inside the slot (451). The rotating ring (431) rotates inside the slot (451). A limiting cylinder (432) is provided inside the rotating ring (431). A sliding rod (433) that slides up and down is provided on the limiting cylinder (432).

8. A natural gas pipeline welding apparatus according to claim 7, characterized in that: A locking bolt (434) is screwed into the limiting cylinder (432) through a threaded hole. The bottom end of the locking bolt (434) is movably provided with a limiting arc plate (435) through a bearing. The bottom end of the slide rod (433) is fixed on the limiting arc plate (435).

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