Telescopic pipeline welding device

Abstract

The utility model discloses a telescopic pipeline welding device, which relates to the technical field of pipeline welding and comprises a welding box, a first rotating shaft is rotatably connected in the welding box, a motor is arranged in the welding box, a rotating shaft of the motor is fixedly connected with the first rotating shaft, a first gear is fixedly connected onto the first rotating shaft, and a second gear is fixedly connected onto the second rotating shaft. A reverse gear assembly is arranged on the first rotating shaft and comprises a first bevel gear fixedly connected to the first rotating shaft, a second bevel gear is rotationally connected into the welding box and meshed with the first bevel gear, a second rotating shaft is arranged in the welding box, and the second rotating shaft is meshed with the second bevel gear. A second bevel gear is fixedly connected to the first rotating shaft, a third bevel gear is fixedly connected to the second rotating shaft and meshed with the second bevel gear, a second gear is fixedly connected to the second rotating shaft, welding beads of a to-be-welded pipeline do not need to be changed while welding is accelerated through the two welding guns, welding is facilitated, and meanwhile the welding efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of pipeline welding, in particular to a telescopic pipeline welding device. Background Art

[0002] At present, with the rapid development of steel structure welding technology, the use of large and thick-walled steel parts is increasing, especially in the welding of pipelines and steel structures in specific workstations such as workshop production lines or offshore pipe-laying vessels. The heavy welding workload requires efficient welding methods and processes to meet construction requirements.

[0003] Chinese patent number CN208743985U discloses "a telescopic pipe welding device" including: an outer ring, a middle ring, a right gear ring, a left gear ring, an inner ring, a driver, a gear and a machine head; the inner ring is arranged in the middle ring; the right gear ring and the left gear ring are fixed on the middle ring and are located on both sides of the inner ring; the middle ring is arranged in the outer ring; the machine head is fixed at the first end of the inner ring, and the gear is meshed with the inner ring, the right gear ring and the left gear ring; the driver is connected to the gear. By setting the outer ring, the middle ring, the right gear ring, the left gear ring, the inner ring and the driver, the machine head can be quickly aligned on the circumference of the pipeline. Therefore, when changing the weld, there is no need to disassemble the track or the machine head again. It is only necessary to operate the telescopic arm to quickly move the track and the machine head installed on the track into place, which reduces a lot of auxiliary time and further improves the welding production efficiency.

[0004] Although the above patent does not require the track to be disassembled and reassembled, the welding efficiency is low because only one welding head is used for welding. Now a retractable pipeline welding device is proposed to improve the welding efficiency. Utility Model Content

[0005] The utility model aims to provide a telescopic pipeline welding device to solve the deficiencies in the above-mentioned prior art.

[0006] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: a telescopic pipeline welding device comprises a welding box, a first rotating shaft is rotatably connected in the welding box, a motor is arranged in the welding box, the rotating shaft of the motor is fixedly connected to the first rotating shaft, a first gear is fixedly connected to the first rotating shaft, a reverse gear assembly is arranged on the first rotating shaft, the reverse gear assembly comprises a first bevel gear fixedly connected to the first rotating shaft, a second bevel gear is rotatably connected in the welding box, the second bevel gear is meshed with the first bevel gear, a second rotating shaft is arranged in the welding box, a third bevel gear is fixedly connected to the second rotating shaft, the third bevel gear is meshed with the second bevel gear, a second gear is fixedly connected to the second rotating shaft, and the first rotating shaft is coaxial with the second rotating shaft;

[0007] A coaxial first half ring and a second half ring are fixedly connected in the welding box, a first arc-shaped rack is slidably connected in the first half ring along a circumferential path, the first arc-shaped rack is meshed with the first gear, and a first welding gun is arranged on the first arc-shaped rack; a second arc-shaped rack is slidably connected in the second half ring along a circumferential path, the second arc-shaped rack is meshed with the second gear, a second welding gun is arranged on the second arc-shaped rack, and the muzzles of the first welding gun and the second welding gun are coaxial;

[0008] A limiting structure for fixing the pipe to be welded is arranged in the welding box, and the pipe to be welded is coaxial with the first arc-shaped rack and the second arc-shaped rack.

[0009] Furthermore, a baffle is provided in the welding box, and the motor is placed on the baffle to bear the weight of the motor and parts fixed on the electrode.

[0010] Furthermore, a rubber pad is provided inside the pipeline stopper to reduce friction between the pipeline and the pipeline stopper.

[0011] Furthermore, there is a gap between the third rotating shaft and the first rotating shaft to prevent friction between the third rotating shaft and the first rotating shaft from damaging the two rotating shafts.

[0012] Furthermore, the first gear and the second gear have the same size, and the number of racks of the final gear is the same as the number of racks of the second gear, ensuring that the first gear and the second gear have the same rotation speed and opposite directions.

[0013] Compared with the prior art, the utility model provides a telescopic pipe welding device, in which the rotation of the first gear and the second gear drives the rotation of the first arc-shaped rack and the second arc-shaped rack, and the paths of the first arc-shaped rack and the second arc-shaped rack are just a circle, that is, the movement paths of the first welding gun and the second welding gun are opposite but form a circle, and the two welding guns speed up welding while the welded pipe does not need to change the weld bead, which facilitates welding and improves welding efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0015] Figure 1 A schematic diagram of the overall internal structure of a welding box provided by an embodiment of the utility model;

[0016] Figure 2 A schematic diagram of a partial structure of a welding box provided in an embodiment of the utility model;

[0017] Figure 3A schematic diagram of the first half plate and the second half ring structure provided by an embodiment of the utility model;

[0018] Figure 4 A schematic diagram of the gear set structure provided in an embodiment of the utility model;

[0019] Figure 5 This is a schematic diagram of the external structure of a welding box provided in an embodiment of the utility model.

[0020] Description of reference numerals:

[0021] 1. Welding box; 101. baffle; 2. first rotating shaft; 201. first gear; 3. motor; 4. first bevel gear; 5. second bevel gear; 6. second rotating shaft; 601. third bevel gear; 602. second gear; 7. first half ring; 701. first arc-shaped rack; 702. first welding gun; 8. second half ring; 801. second arc-shaped rack; 802. second welding gun; 9. limiting structure. DETAILED DESCRIPTION

[0022] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0023] See also Figure 1-5 A telescopic pipeline welding device provided by an embodiment of the utility model includes a welding box 1, a first rotating shaft 2 is rotatably connected in the welding box 1, a motor 3 is arranged in the welding box 1, the rotating shaft of the motor 3 is fixedly connected to the first rotating shaft 2, a first gear 201 is fixedly connected to the first rotating shaft 2, a reverse gear assembly is arranged on the first rotating shaft 2, the reverse gear assembly includes a first bevel gear 4 fixedly connected to the first rotating shaft 2, a second bevel gear 5 is rotatably connected in the welding box 1, the second bevel gear 5 is meshed with the first bevel gear 4, a second rotating shaft 6 is arranged in the welding box 1, a third bevel gear 601 is fixedly connected to the second rotating shaft 6, the third bevel gear 601 is meshed with the second bevel gear 5, a second gear 602 is fixedly connected to the second rotating shaft 6, and the first rotating shaft 2 and the second rotating shaft 6 are coaxial;

[0024] A coaxial first half ring 7 and a second half ring 8 are fixedly connected in the welding box 1, a first arc rack 701 is slidably connected in the first half ring 7 along a circumferential path, the first arc rack 701 is meshed with the first gear 201, and a first welding gun 702 is arranged on the first arc rack 701; a second arc rack 801 is slidably connected in the second half ring 8 along a circumferential path, the second arc rack 801 is meshed with the second gear 602, a second welding gun 802 is arranged on the second arc rack 801, and the muzzles of the first welding gun 702 and the second welding gun 802 are coaxial;

[0025] The welding box 1 is provided with a limiting structure 9 for fixing the pipe to be welded. The pipe to be welded is coaxial with the first arc-shaped rack 701 and the second arc-shaped rack 801. The motor 3 is started, and the motor 3 drives the first rotating shaft 2 to rotate clockwise. The first bevel gear 4 and the first gear 201 fixed on the first rotating shaft 2 will rotate clockwise with the first rotating shaft 2. The first bevel gear 4 drives the second bevel gear 5 to rotate, and the second bevel gear 5 drives the third bevel gear 601 to rotate. The third bevel gear 601 rotates counterclockwise. The gear 601 rotates counterclockwise, which drives the second rotating shaft 6 to rotate counterclockwise. The second gear 602 fixed on the second rotating shaft 6 also rotates counterclockwise. The first gear 201 rotates clockwise to drive the first arc rack 701 to rotate counterclockwise. The second gear 602 rotates counterclockwise to drive the second arc rack 801 to rotate clockwise. At this time, the motion trajectory of the first welding gun 702 is a semicircle and rotates counterclockwise along the circumference, and the motion trajectory of the second welding gun 802 is the remaining semicircle and rotates clockwise along the circumference.

[0026] Compared with the prior art, the utility model provides a telescopic pipe welding device, in which the rotation of the first gear 201 and the second gear 602 drives the rotation of the first arc-shaped rack 701 and the second arc-shaped rack 801, and the path of the first arc-shaped rack 701 and the second arc-shaped rack 801 is just a circle, that is, the movement paths of the first welding gun 702 and the second welding gun 802 are opposite but form a circle, and the two welding guns speed up welding while the welded pipe does not need to change the weld bead, which facilitates welding and improves welding efficiency.

[0027] As a preferred technical solution of this embodiment, a baffle 101 is provided in the welding box 1, and the motor 3 is placed on the baffle 101. A plurality of gears are fixedly connected to the first rotating shaft 2, so the weight borne by the first rotating shaft 2 is relatively large, and if another motor 3 is added, it will break. The baffle 101 can not only bear the weight of the motor 3 but also share the weight of the gears on the first rotating shaft 2. How to better protect the first rotating shaft 2 and extend the service life of the first rotating shaft 2.

[0028] As a preferred technical solution of this embodiment, a rubber pad is provided inside the limiting structure 9 of the pipeline to reduce the friction between the pipeline and the limiting structure 9 of the pipeline.

[0029] As a preferred technical solution of this embodiment, there is a gap between the second rotating shaft 6 and the first rotating shaft 2, so that there is no friction between the second rotating shaft 6 and the first rotating shaft 2. If there is friction, it will not only cause the first rotating shaft 2 and the second rotating shaft 6 to rotate, but also affect the rotation of the first gear 201 and the second gear 602, thereby affecting the welding of the pipeline.

[0030] As a preferred technical solution of this embodiment, the first gear 201 and the second gear 602 have the same size, and the number of racks of the third bevel gear 601 is the same as the number of racks of the second gear 602, so that the first gear 201 and the second gear 602 can have the same rotation speed.

[0031] Working principle: By changing the rotation direction of the gear through a reverse gear assembly, a motor 3 can have gears moving in opposite directions. The gears in opposite directions can drive the arc rack to move in the opposite trajectory, and the welding gun fixed on the arc rack moves in the opposite trajectory.

[0032] The above only describes some exemplary embodiments of the present invention by way of illustration. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A telescopic pipeline welding device, characterized in that: The welding box (1) comprises a welding box (1), wherein a first rotating shaft (2) is rotatably connected inside the welding box (1), a motor (3) is provided inside the welding box (1), a rotating shaft of the motor (3) is fixedly connected to the first rotating shaft (2), a first gear (201) is fixedly connected to the first rotating shaft (2), a reverse gear assembly is provided on the first rotating shaft (2), the reverse gear assembly comprises a first bevel gear (4) fixedly connected to the first rotating shaft (2), a second bevel gear (5) is rotatably connected inside the welding box (1), the second bevel gear (5) is meshed with the first bevel gear (4), a second rotating shaft (6) is provided inside the welding box (1), a third bevel gear (601) is fixedly connected to the second rotating shaft (6), the third bevel gear (601) is meshed with the second bevel gear (5), a second gear (602) is fixedly connected to the second rotating shaft (6), and the first rotating shaft (2) and the second rotating shaft (6) are coaxial; A first half ring (7) and a second half ring (8) are fixedly connected coaxially in the welding box (1); a first arc-shaped rack (701) is slidably connected in the first half ring (7) along a circumferential path, the first arc-shaped rack (701) is meshed with the first gear (201), and a first welding gun (702) is arranged on the first arc-shaped rack (701); a second arc-shaped rack (801) is slidably connected in the second half ring (8) along a circumferential path, the second arc-shaped rack (801) is meshed with the second gear (602), a second welding gun (802) is arranged on the second arc-shaped rack (801), and the muzzles of the first welding gun (702) and the second welding gun (802) are coaxial; A limiting structure (9) for fixing the pipe to be welded is arranged in the welding box (1); the pipe to be welded is coaxial with the first arc-shaped rack (701) and the second arc-shaped rack (801).

2. A telescopic pipeline welding device according to claim 1, characterized in that: A baffle (101) is provided in the welding box (1), and the motor (3) is placed on the baffle (101).

3. The telescopic pipe welding device according to claim 1, characterized in that: A rubber pad is provided inside the limiting structure (9) of the pipeline.

4. The telescopic pipeline welding device according to claim 1, characterized in that: There is a gap between the second rotating shaft (6) and the first rotating shaft (2).

5. The telescopic pipeline welding device according to claim 1, characterized in that: The first gear (201) and the second gear (602) have the same size, and the number of racks of the third bevel gear (601) is the same as the number of racks of the second gear (602).

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