An automatic welding device for butt joint of LNG transmission pipelines

Abstract

The utility model discloses an automatic welding device for butt joint of LNG delivery pipelines, relates to the technical field of LNG delivery pipeline welding, comprises a bottom fixing plate, a circular array of which is at the lower end of the fixed welding platform, fifteen bottom fixing plates are arranged, the upper end of the bottom fixing plate is welded and connected to the fixed welding platform, connecting thin plates are arranged at both front and rear ends between the fifteen adjacent bottom fixing plates, connecting pins are arranged between the connecting thin plates and the bottom fixing plates through a card slot, the device can be rotated outside the LNG delivery pipeline by installing a through shaft, the rotation of the wheel body will drive the through shaft to rotate, and then the through shaft drives the cleaning cylinder and the cleaning brush to rotate, so that the cleaning brush brushes the outside of the LNG delivery pipeline, so that the outside of the LNG delivery pipeline is kept clean, and it is ensured that the staff can quickly weld the LNG delivery pipeline.

Description

Technical Field

[0001] The utility model relates to the technical field of LNG delivery pipeline welding, in particular to an automatic welding device for butt jointing of LNG delivery pipelines. Background Art

[0002] LNG transmission pipeline refers to liquefied natural gas (LNG) transmission pipeline. Currently, pipeline joints usually have sealing requirements, so pipe-to-pipe docking is a more common joint form in pipeline connection. Currently, when construction workers weld LNG transmission pipelines on site, they need to use clamps to fix the two sections of pipelines, and then use welding equipment to weld the LNG transmission pipelines.

[0003] However, when the existing welding equipment is used to weld the LNG transmission pipeline, since the LNG transmission pipeline will inevitably absorb some dust and debris on its outside during production and transportation, in order to ensure the sealing of the welding, the construction workers need to clean the dust and debris on the outside of the LNG transmission pipeline when welding the LNG transmission pipeline, which will affect the workers' rapid welding of the LNG transmission pipeline; therefore, it does not meet the existing needs. In this regard, we propose an automatic welding device for LNG transmission pipeline docking. Utility Model Content

[0004] The purpose of the utility model is to provide an automatic welding device for LNG delivery pipeline docking, so as to solve the problem that when the welding equipment proposed in the above background technology is used to weld the LNG delivery pipeline, since the LNG delivery pipeline will inevitably absorb some dust and debris on its outside during production and transportation, in order to ensure the sealing of the welding, the construction personnel need to clean the dust and debris on the outside of the LNG delivery pipeline when welding the LNG delivery pipeline, which affects the personnel's rapid welding of the LNG delivery pipeline.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solution: an automatic welding device for butt joint of LNG transmission pipelines, comprising a fixed welding platform, characterized in that:

[0006] The bottom fixing plate, a circular array of which is at the lower end of the fixed welding platform, the bottom fixing plate is provided with fifteen, the upper end of the bottom fixing plate is welded and connected to the fixed welding platform, and connecting thin plates are provided at the front and rear ends between the fifteen adjacent bottom fixing plates, and connecting pins are provided between the connecting thin plates and the bottom fixing plate through a card slot, and the connecting thin plates are rotatably connected to the bottom fixing plate, and the front and rear end surfaces of the fifteen bottom fixing plates are fixedly installed with fixed connecting shafts, and the side of the fixed connecting shaft away from the bottom fixing plate is fixedly installed with a side limiting plate, and the side of the side limiting plate and the bottom fixing plate away from the fixed welding platform are fixedly installed with a threaded cylinder, and the threaded cylinder is welded to the side limiting plate and the bottom fixing plate, and the end of the threaded cylinder away from the fixed welding platform is threadedly installed with a threaded rod, and one end of the threaded rod is fixedly installed with a rotating wheel mounting bracket, and the rotating wheel main body is rotatably installed inside the rotating wheel mounting bracket;

[0007] A through shaft is arranged below the fixed welding platform, and there are six through shafts, which are rotatably connected to the rotating wheel mounting bracket, and all of the six through shafts pass through the interior of the rotating wheel body and are fixedly connected to the rotating wheel body, and cleaning cylinders are installed at the front and rear ends of the outside of the six through shafts, and the cleaning cylinders are fixedly connected to the through shafts, and cleaning bristles are fixedly installed on the outside of the cleaning cylinders.

[0008] Preferably, an adjustment groove is provided inside the front end surface of the fixed welding platform, and an adjustment bracket is slidably connected inside the adjustment groove.

[0009] Preferably, a lower top spring is installed inside the adjusting bracket, a sliding block is fixedly installed on the upper end of the lower top spring, and the lower top spring is fixedly connected to the sliding block and the adjusting bracket.

[0010] Preferably, the interior of the upper end of the sliding block is slidably connected to a limiting guide rail via a slot, and the limiting guide rail is fixedly connected to the fixed welding platform.

[0011] Preferably, a welding gun mechanism is installed at the lower end of the adjusting bracket through a slot.

[0012] Preferably, an adjusting threaded rod is threadably mounted on the upper end of the adjusting bracket.

[0013] Preferably, an LNG delivery pipeline is provided on the outer side of the runner body.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1. The utility model can install fifteen bottom fixing plates to cooperate with the connecting thin plates and the connecting pins to enable the device to be quickly covered on the outside of the LNG delivery pipeline. Only by removing any one of the connecting pins, the device can be disassembled into a straight line, so that the device can be stored and occupies less space. At the same time, when the device is installed on the outside of LNG delivery pipelines of different specifications, several bottom fixing plates can be selectively disassembled, so that the device can be quickly installed on the outside of LNG delivery pipelines of different specifications. The side limit plates are installed to cooperate with the lower end runner body to limit the LNG delivery pipeline to prevent the device from automatically adjusting the position of the LNG delivery pipeline after the installation and fixation is completed, so that the LNG delivery pipeline is automatically aligned, making the device more convenient to use and enhancing the practicality of the device. The threaded rod can be installed to cooperate with the threaded barrel, so that the threaded rod can be rotated by one pitch to adjust the position of the runner body, making the runner body more convenient to use;

[0016] 2. The utility model can install a through-shaft so that when the device rotates outside the LNG delivery pipeline, the rotation of the wheel body will drive the through-shaft to rotate, and then the through-shaft drives the cleaning cylinder and the cleaning brush to rotate, so that the cleaning brush can brush the outside of the LNG delivery pipeline, so that the outside of the LNG delivery pipeline is kept clean, and the staff can quickly weld the LNG delivery pipeline. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the installation structure of an automatic welding device for butt jointing of LNG delivery pipelines according to the utility model;

[0018] Figure 2 This is a three-dimensional stereogram of an automatic welding device for butt jointing of LNG delivery pipelines according to the utility model;

[0019] Figure 3 This is a diagram showing the connection relationship between the sliding block and the lower top spring of the utility model;

[0020] Figure 4 for Figure 2 Enlarged view of part A.

[0021] In the figure: 1. Fixed welding platform; 2. Bottom fixing plate; 3. Side limiting plate; 4. Fixed connecting shaft; 5. Connecting thin plate; 6. Connecting pin; 7. Adjusting bracket; 8. Adjusting threaded rod; 9. Lower spring; 10. Welding gun mechanism; 11. Rotary wheel mounting bracket; 12. Rotary wheel body; 13. Through shaft; 14. Cleaning cylinder; 15. Cleaning brush; 16. Adjusting groove; 17. Threaded cylinder; 18. Threaded rod; 19. Sliding block; 20. Limiting guide rail. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0023] See also Figure 1-4 The utility model provides an embodiment: an automatic welding device for butt joint of LNG delivery pipelines, comprising a fixed welding platform 1, characterized in that:

[0024] The bottom fixing plate 2 has an annular array at the lower end of the fixed welding platform 1. Fifteen bottom fixing plates 2 are provided. The installation of fifteen bottom fixing plates 2 can make it cooperate with the connecting thin plate 5 and the connecting pin 6 to enable the device to be quickly covered on the outside of the LNG delivery pipeline. Only by removing any one of the connecting pins 6, the device can be disassembled into a straight line, so that the device can be stored and occupies less space. At the same time, when the device is installed on the outside of LNG delivery pipelines of different specifications, several bottom fixing plates 2 can be selectively removed, so that the device can be quickly installed on the outside of LNG delivery pipelines of different specifications. The upper end of the bottom fixing plate 2 is welded and connected to the fixed welding platform 1. Connecting thin plates 5 are provided at the front and rear ends of the fifteen adjacent bottom fixing plates 2. Connecting pins 6 are provided between the connecting thin plates 5 and the bottom fixing plates 2 through a card groove. The connecting thin plates 5 are rotatably connected to the bottom fixing plates 2. Fixed connecting shafts 4 are fixedly installed on the front and rear end surfaces of the fifteen bottom fixing plates 2, and the fixed connecting shafts 4 are away from the bottom A side limiting plate 3 is fixedly installed on one side of the fixing plate 2. The side limiting plate 3 is installed so that it can cooperate with the runner body 12 at its lower end to limit the LNG delivery pipeline, so as to prevent the device from automatically adjusting the position of the LNG delivery pipeline after the installation and fixing is completed, so that the LNG delivery pipeline is automatically aligned, making the device more convenient to use and enhancing the practicality of the device. The side limiting plate 3 and the side of the bottom fixing plate 2 away from the fixed welding platform 1 are fixedly installed with a threaded cylinder 17, and the threaded cylinder 17 is welded to the side limiting plate 3 and the bottom fixing plate 2. A threaded rod 18 is installed at one end of the threaded cylinder 17 away from the fixed welding platform 1 through a thread. The threaded rod 18 can be installed to cooperate with the threaded cylinder 17, so that the threaded rod 18 can be rotated by a pitch, so that the position of the runner body 12 can be adjusted, making the runner body 12 more convenient to use. A runner mounting bracket 11 is fixedly installed on one end of the threaded rod 18, and the runner body 12 is rotatably installed inside the runner mounting bracket 11;

[0025] A through shaft 13 is arranged below the fixed welding platform 1. There are six through shafts 13. The six through shafts 13 are rotatably connected to the rotor mounting bracket 11. When the through shaft 13 is installed, the device can rotate outside the LNG delivery pipeline. The rotation of the rotor body 12 will drive the through shaft 13 to rotate, and then the through shaft 13 drives the cleaning barrel 14 and the cleaning brush 15 to rotate, so that the cleaning brush 15 brushes the outside of the LNG delivery pipeline to keep the outside of the LNG delivery pipeline clean, ensuring that the staff can quickly weld the LNG delivery pipeline. The six through shafts 13 all penetrate the interior of the rotor body 12 and are fixedly connected to the rotor body 12. Cleaning barrels 14 are installed at the front and rear ends of the outside of the six through shafts 13. The cleaning barrel 14 is fixedly connected to the through shaft 13, and the outside of the cleaning barrel 14 is fixedly installed with cleaning brushes 15.

[0026] See also Figure 1 , Figure 2 , Figure 3 and Figure 4 An adjusting groove 16 is provided inside the front end surface of the fixed welding platform 1, and an adjusting bracket 7 is slidably connected inside the adjusting groove 16. A lower top spring 9 is installed inside the adjusting bracket 7. The lower top spring 9 is installed so that it can cooperate with the adjusting threaded rod 8 to adjust the position of the adjusting bracket 7 to ensure that the welding gun mechanism 10 can stably weld the LNG delivery pipeline. A sliding block 19 is fixedly installed on the upper end of the lower top spring 9. The lower top spring 9 is fixedly connected to the sliding block 19 and the adjusting bracket 7. The inner part of the upper end of the sliding block 19 is slidably connected to a limiting guide rail 20 through a slot. The limiting guide rail 20 is fixedly connected to the fixed welding platform 1. The lower end of the adjusting bracket 7 is installed with a welding gun mechanism 10 through a slot, and the upper end of the adjusting bracket 7 is installed with an adjusting threaded rod 8 through a thread. The outer side of the runner body 12 is provided with an LNG delivery pipeline.

[0027] Working principle: when in use, the staff removes a connecting pin 6 so that the device can be unfolded into a straight line, and then the staff wraps the device around the outside of the LNG delivery pipeline and adjusts the position of the device so that the welding gun mechanism 10 is aligned with the weld position of the LNG delivery pipeline, and then the staff reinstalls the connecting pin 6 into the device. Next, the staff rotates the device. Due to the welding point between the runner body 12 and the outside of the LNG delivery pipeline, the runner body 12 rotates under the action of friction, and then the rotation of the runner body 12 will drive the through shaft 13 to rotate, and then the through shaft 13 drives the cleaning barrel 14 and the cleaning brush 15 to rotate, so that the cleaning brush 15 brushes the outside of the LNG delivery pipeline to keep the outside of the LNG delivery pipeline clean. When the staff rotates the device to one hundred and eighty degrees, the welding gun mechanism 10 works to weld the LNG delivery pipeline, and then the staff rotates the device one hundred and eighty degrees again. The fifteen bottom fixing plates 2 installed in the device can cooperate with the connecting thin plate 5 and the connecting pin 6 to enable the device to be quickly covered on the outside of the LNG delivery pipeline. Only any one of the connecting pins 6 needs to be removed to The device is disassembled into a straight line, so that the device occupies less space when stored. At the same time, when the device is installed on the outside of LNG delivery pipelines of different specifications, several bottom fixing plates 2 can be selectively disassembled, so that the device can be quickly installed on the outside of LNG delivery pipelines of different specifications. The side limit plate 3 is installed to cooperate with the runner body 12 at its lower end to limit the LNG delivery pipeline, so as to prevent the device from automatically adjusting the position of the LNG delivery pipeline after the installation and fixation is completed, so that the LNG delivery pipeline is automatically aligned, making the device more convenient to use and enhancing the practicality of the device. The threaded rod 18 can be installed to cooperate with the threaded cylinder 17, so that the threaded rod 18 can rotate a pitch to adjust the position of the runner body 12, so that the runner body 12 is more convenient to use. The through shaft 13 can be installed so that when the device is rotated outside the LNG delivery pipeline, the rotation of the runner body 12 will drive the through shaft 13 to rotate, and then the through shaft 13 drives the cleaning cylinder 14 and the cleaning brush 15 to rotate, so that the cleaning brush 15 brushes the outside of the LNG delivery pipeline, so that the outside of the LNG delivery pipeline is kept clean, and the staff can quickly weld the LNG delivery pipeline.

[0028] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. An automatic welding device for butt jointing of LNG transmission pipelines, comprising a fixed welding platform (1), characterized in that: A bottom fixing plate (2) is provided in an annular array at the lower end of the fixed welding platform (1), and fifteen bottom fixing plates (2) are provided. The upper end of the bottom fixing plate (2) is welded to the fixed welding platform (1), and connecting thin plates (5) are provided at the front and rear ends of the fifteen adjacent bottom fixing plates (2). A connecting pin (6) is provided between the connecting thin plate (5) and the bottom fixing plate (2) via a card slot. The connecting thin plate (5) is rotatably connected to the bottom fixing plate (2), and the front and rear end surfaces of the fifteen bottom fixing plates (2) are fixedly installed with a fixed connecting shaft (4). A side limit plate (3) is fixedly mounted on the side of the connecting shaft (4) away from the bottom fixing plate (2); a threaded cylinder (17) is fixedly mounted on the side of the side limit plate (3) and the side of the bottom fixing plate (2) away from the fixed welding platform (1); the threaded cylinder (17) is welded to the side limit plate (3) and the bottom fixing plate (2); a threaded rod (18) is threadedly mounted on one end of the threaded cylinder (17) away from the fixed welding platform (1); a rotating wheel mounting bracket (11) is fixedly mounted on one end of the threaded rod (18); a rotating wheel main body (12) is rotatably mounted inside the rotating wheel mounting bracket (11); A through shaft (13) is arranged below the fixed welding platform (1), six through shafts (13) are arranged, the six through shafts (13) are rotatably connected to the wheel mounting bracket (11), the six through shafts (13) all penetrate the interior of the wheel body (12) and are fixedly connected to the wheel body (12), cleaning cylinders (14) are installed at the front and rear ends of the six through shafts (13), the cleaning cylinders (14) are fixedly connected to the through shafts (13), and cleaning brushes (15) are fixedly installed on the outside of the cleaning cylinders (14).

2. The automatic welding device for butt jointing of LNG transportation pipelines according to claim 1 is characterized in that: An adjustment groove (16) is provided inside the front end surface of the fixed welding platform (1), and an adjustment bracket (7) is slidably connected inside the adjustment groove (16).

3. The automatic welding device for butt jointing of LNG transportation pipelines according to claim 2 is characterized in that: A lower top spring (9) is installed inside the adjusting bracket (7), a sliding block (19) is fixedly installed on the upper end of the lower top spring (9), and the lower top spring (9) is fixedly connected to the sliding block (19) and the adjusting bracket (7).

4. The automatic welding device for butt jointing of LNG delivery pipelines according to claim 3 is characterized in that: The interior of the upper end of the sliding block (19) is slidably connected to a limiting guide rail (20) via a slot, and the limiting guide rail (20) is fixedly connected to the fixed welding platform (1).

5. The automatic welding device for butt jointing of LNG transportation pipelines according to claim 2 is characterized in that: A welding gun mechanism (10) is mounted on the lower end of the adjustment bracket (7) via a slot.

6. The automatic welding device for butt jointing of LNG transportation pipelines according to claim 2 is characterized in that: An adjusting threaded rod (8) is threadably mounted on the upper end of the adjusting bracket (7).

7. The automatic welding device for butt jointing of LNG transportation pipelines according to claim 1 is characterized in that: An LNG delivery pipeline is arranged outside the runner body (12).

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