Marine fuel pipeline welding equipment

Abstract

The invention discloses marine fuel pipeline welding equipment, and relates to the technical field of fuel pipeline welding, the marine fuel pipeline welding equipment comprises a pipeline fixing mechanism and a welding mechanism, the welding mechanism is fixedly mounted on the pipeline fixing mechanism, the pipeline fixing mechanism comprises a device base, and a center sliding seat is slidably mounted on the device base; the center of the center sliding seat is fixedly provided with an outer connecting pipe, the device base is slidably provided with a two-end sliding seat, the two-end sliding seat is rotatably provided with a three-jaw chuck, the three-jaw chuck is slidably provided with a chuck block, the center of the chuck block is fixedly clamped and provided with a fuel pipe, and the fuel pipe and the outer connecting pipe are coaxial. The mode that the outer connecting pipe is additionally welded between the two fuel pipes is adopted, when the temperature of the welded fuel pipes changes, the outer connecting pipe slightly extrudes the fuel pipes to guarantee the welding seam stability of the outer connecting pipe and the fuel pipes, and the pipeline fixing mechanism freely moves to guarantee welding work.

Description

Technical Field

[0001] The invention relates to the technical field of fuel pipeline welding, and in particular to a marine fuel pipeline welding device. Background Art

[0002] The welding technology of marine fuel pipelines directly affects the safety and reliability of navigation. In the shipbuilding industry, the welding quality of fuel pipelines directly affects the safety of fuel supply and transmission of ships. In traditional technology, the welding of marine fuel pipelines often faces the following problems. The first is the stress of the pipelines during hull vibration and ship movement, which may cause fatigue cracks and leakage at the welding points. Secondly, the special environment of ship fuel pipelines, such as seawater corrosion and high temperature changes, these factors will affect the long-term stability and durability of welded joints. The purpose of the present invention is to provide a welding device that can still ensure the reliability of fuel pipelines in the face of temperature changes. Summary of the invention

[0003] The purpose of the present invention is to provide a welding device that uses an additional external connecting pipe to be welded between two fuel pipes. When the welded fuel pipes encounter temperature changes, the external connecting pipe slightly squeezes the fuel pipes to ensure the stability of the weld between the external connecting pipe and the fuel pipe, and the pipeline fixing mechanism moves freely to ensure the progress of the welding work.

[0004] To solve the above technical problems, the technical solution adopted by the present invention is: a marine fuel pipeline welding device, including a pipeline fixing mechanism and a welding mechanism, the welding mechanism is fixedly installed on the pipeline fixing mechanism, the pipeline fixing mechanism includes a device base, a central slide is slidably installed on the device base, an external connecting pipe is fixedly installed at the center of the central slide, two end slides are slidably installed on the device base, three-jaw chucks are rotatably installed on the two end slides, a chuck block is slidably installed on the three-jaw chuck, a fuel pipe is fixedly clamped and installed at the center of the chuck block, the fuel pipe is coaxial with the external connecting pipe, and a second group of two end slides, three-jaw chucks, chuck blocks, and fuel pipes are symmetrically arranged on the other side of the device, and the two symmetrically arranged groups of fuel pipes are welded together through the external connecting pipe, and the welding mechanism includes a support plate, the support plate is fixedly installed on the device base, a top motor is fixedly installed on the support plate, a welding swivel is fixedly installed on the output shaft of the top motor, a welding swivel is fixedly installed on the welding slide, a moving slider is slidably installed on the welding slide, and a welding gun is fixedly installed on the moving slider.

[0005] Furthermore, the fuel pipeline may be used in high-temperature or low-temperature environments. When the fuel pipeline is used in high-temperature environments, the external connecting pipe is replaced with an internal connecting pipe, and the internal connecting pipe fixes the fuel pipe from the inside of the fuel pipe. The materials of the external connecting pipe and the internal connecting pipe are both metals with a large expansion coefficient.

[0006] Furthermore, a chuck gear is fixedly installed on the three-jaw chuck, a center motor is fixedly installed on the center slide, the center motor is a dual-axis motor, spline shafts are fixedly installed on the output shafts at both ends of the center motor, spline gears are rotatably installed on the slides at both ends, and the spline gears are slidably connected to the spline shafts.

[0007] Furthermore, a clamping motor is fixedly mounted on the center slide, an internal gear is fixedly mounted on the output shaft of the clamping motor, an outer gear ring is rotatably mounted on the center slide, an outer ring of the outer gear ring is partially in sliding contact with the center slide, and a sliding seat is slidably mounted on the center slide.

[0008] Furthermore, a clamping wheel is rotatably mounted on the sliding seat, and the external connecting pipe is clamped and mounted at the center of a plurality of clamping wheels.

[0009] Furthermore, a first screw, a second screw, and a third screw are rotatably installed on the device base, and a first motor, a second motor, and a third motor are fixedly installed on the device base. The output shaft of the first motor is fixedly connected to the first screw, the output shaft of the second motor is fixedly connected to the second screw, and the output shaft of the third motor is fixedly connected to the third screw. The first screw, the second screw, and the third screw are all partially provided with threaded portions, the threaded portion of the first screw forms a threaded fit with the two end slides, the second screw forms a threaded fit with the center slide, and the third screw forms a threaded fit with another group of two end slides that are symmetrically arranged.

[0010] Furthermore, a moving motor is fixedly mounted on the welding slide, a moving screw is fixedly mounted on the output shaft of the moving motor, and the moving screw forms a threaded fit with the moving slider.

[0011] Furthermore, a protective gas storage tank is fixedly installed on the movable slider.

[0012] Compared with the prior art, the present invention has the following advantages: (1) the present invention adopts a method of additionally welding an external connecting pipe between two fuel pipes. When the welded fuel pipe encounters temperature changes, the external connecting pipe slightly squeezes the fuel pipe to ensure the stability of the weld between the external connecting pipe and the fuel pipe, and the pipe fixing mechanism moves freely to ensure the progress of the welding work; (2) the three-jaw chuck of the present invention can freely control the rotation of the fuel pipe to complete the feeding movement, and at the same time can ensure the free movement of the center slide and the slides at both ends; (3) the welding gun of the present invention can move freely to the two ends of the external connecting pipe to weld it with the fuel pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0014] Figure 2 It is a schematic diagram of the external connecting pipe of the present invention.

[0015] Figure 3 It is a schematic diagram of the inner connecting pipe of the present invention.

[0016] Figure 4 It is a schematic diagram of the chuck gear of the present invention.

[0017] Figure 5 Schematic diagram of the outer gear ring of the present invention.

[0018] Figure 6 It is a schematic diagram of the internal gear of the present invention.

[0019] Figure 7 It is a schematic diagram of the welding mechanism of the present invention.

[0020] Figure 8 It is the overall structural front view of the present invention.

[0021] Fig. 9 It is a top view of the overall structure of the present invention.

[0022] Figure numbers: 1-device base; 2-first screw; 3-second screw; 4-third screw; 5-center slide; 6-external connecting pipe; 7-two end slides; 8-three-jaw chuck; 9-chuck block; 10-fuel pipe; 11-internal connecting pipe; 12-chuck gear; 13-spline gear; 14-spline shaft; 15-center motor; 16-clamping motor; 17-internal gear; 18-external gear ring; 19-sliding seat; 20-clamping wheel; 21-first motor; 22-second motor; 23-third motor; 24-support plate; 25-top motor; 26-welding swivel; 27-welding slide; 28-moving slider; 29-welding gun; 30-moving motor; 31-moving screw; 32-shielding gas storage tank. DETAILED DESCRIPTION

[0023] The technical solution of the present invention is further described below with reference to the accompanying drawings and through specific implementation methods.

[0024] Example: Figure 1-Figure 9The fuel pipeline welding device shown in the figure comprises a pipeline fixing mechanism and a welding mechanism, the welding mechanism is fixedly mounted on the pipeline fixing mechanism, the pipeline fixing mechanism comprises a device base 1, a central slide seat 5 is slidably mounted on the device base 1, an external connecting pipe 6 is fixedly mounted at the center of the central slide seat 5, two end slide seats 7 are slidably mounted on the device base 1, three-jaw chucks 8 are rotatably mounted on the two end slide seats 7, a chuck block 9 is slidably mounted on the three-jaw chuck 8, a fuel pipe 10 is fixedly clamped and mounted at the center of the chuck block 9, the fuel pipe 10 is coaxial with the external connecting pipe 6, and the two end slide seats 7 are slidably mounted on the two end slide seats 7. The seat 7, three-jaw chuck 8, chuck block 9, and fuel pipe 10 are symmetrically arranged in a second group on the other side of the device. The two symmetrically arranged groups of fuel pipes 10 are welded together through the external connecting pipe 6. The welding mechanism includes a support plate 24, which is fixedly mounted on the device base 1, and a top motor 25 is fixedly mounted on the support plate 24. A welding swivel 26 is fixedly mounted on the output shaft of the top motor 25, and a welding slide 27 is fixedly mounted on the welding swivel 26. A moving slide 28 is slidably mounted on the welding slide 27, and a welding gun 29 is fixedly mounted on the moving slide 28. Marine fuel pipelines are often used in occasions such as ship engines and cooling systems. The traditional method of directly butting two fuel pipes 10 together for welding is prone to collapse of the weld and cause fuel leakage when facing a sudden drop in temperature. The present invention adopts a method of additionally welding an external connecting pipe 6 between two fuel pipes 10. The axial distance of the external connecting pipe 6 is very short, which will not increase the difficulty of welding the two fuel pipes 10. The central slide 5 slides on the device base 1 to drive the external connecting pipe 6 to move. The slides 7 at both ends slide on the device base 1 to drive the fuel pipe 10 clamped on the chuck block 9 to slide. The fuel pipe 10 and the external connecting pipe 6 slide and dock. The fuel pipes 10 on both sides are docked with the central external connecting pipe 6. When the welding mechanism welds the external connecting pipe 6 and the fuel pipe 10, it is necessary to complete the welding from both sides of the external connecting pipe 6. The top motor 25 drives the welding swivel 26 to rotate, the welding swivel 26 drives the welding slide 27 to rotate, and the welding slide 27 drives the moving slide 28 to rotate. The welding gun 29 on the moving slide 28 welds the external connecting pipe 6 and the fuel pipe 10 on both sides of the external connecting pipe 6. The welding feed movement is assisted by the automatic sliding of the slides 7 at both ends and the central slide 5 on the device base 1.

[0025] The fuel pipeline may be used in high-temperature or low-temperature applications. When the fuel pipeline is used in high-temperature applications, the outer connecting pipe 6 is replaced with the inner connecting pipe 11. The inner connecting pipe 11 fixes the fuel pipe 10 from the inner side of the fuel pipe 10. The materials of the outer connecting pipe 6 and the inner connecting pipe 11 are both metals with relatively large expansion coefficients. When the outer connecting pipe 6 is cooled, the distance it shrinks is greater than the fuel pipe 10. The outer connecting pipe 6 slightly squeezes the fuel pipe 10 to ensure the stability of the weld between the outer connecting pipe 6 and the fuel pipe 10. When the inner connecting pipe 11 is heated, the distance it expands is greater than the fuel pipe 10. The inner connecting pipe 11 squeezes the fuel pipe 10 from the inside to the outside to ensure the stability of the weld between the inner connecting pipe 11 and the fuel pipe 10. When the welding of the inner connecting pipe 11 and the fuel pipe 10 is completed, the center slide 5 clamps one end of the inner connecting pipe 11, and the other end of the center slide 5 is first welded to the fuel pipe 10. After completion, the fuel pipe 10 on the other side is slidably docked to complete the welding process.

[0026] A chuck gear 12 is fixedly mounted on the three-jaw chuck 8, a center motor 15 is fixedly mounted on the center slide 5, the center motor 15 is a double-shaft motor, a spline shaft 14 is fixedly mounted on the output shafts at both ends of the center motor 15, a spline gear 13 is rotatably mounted on the slides 7 at both ends, and the spline gear 13 is slidably connected with the spline shaft 14. During the welding process of the external connecting pipe 6 and the fuel pipe 10, the fuel pipe 10 needs to be rotated continuously to complete the welding of the entire circumferential direction of the fuel pipe 10, the center motor 15 is started to drive the spline shaft 14 to rotate, the spline shaft 14 drives the spline gear 13 to rotate, the spline gear 13 drives the chuck gear 12 to rotate, the chuck gear 12 drives the three-jaw chuck 8 to rotate, and the three-jaw chuck 8 drives the fuel pipe 10 to rotate. Due to the sliding connection between the spline gear 13 and the spline shaft 14, the spline shaft 14 can still drive the spline gear 13 to rotate during the process of the center slide 5 and the slides 7 at both ends moving and changing positions.

[0027] A clamping motor 16 is fixedly mounted on the center slide 5, an internal gear 17 is fixedly mounted on the output shaft of the clamping motor 16, an external gear ring 18 is rotatably mounted on the center slide 5, the outer ring of the external gear ring 18 is partially in sliding contact with the center slide 5, and a sliding seat 19 is slidably mounted on the center slide 5. The clamping motor 16 is started to drive the internal gear 17 to rotate, the internal gear 17 drives the external gear ring 18 to rotate, the external gear ring 18 drives the sliding seat 19 to slide on the external gear ring 18, and multiple sliding seats 19 move toward the center at the same time to realize the centering clamping of the external connecting pipe 6.

[0028] A clamping wheel 20 is rotatably mounted on the sliding seat 19, and the external connecting pipe 6 is clamped and mounted at the center of a plurality of clamping wheels 20. The movement of the sliding seat 19 drives the clamping wheel 20 to move toward the center to clamp the external connecting pipe 6. The clamping wheel 20 clamps the external connecting pipe 6 without hindering the rotation of the external connecting pipe 6, which facilitates the free rotation of the external connecting pipe 6 during the welding process.

[0029] A first screw 2, a second screw 3, and a third screw 4 are rotatably mounted on the device base 1, and a first motor 21, a second motor 22, and a third motor 23 are fixedly mounted on the device base 1. The output shaft of the first motor 21 is fixedly connected to the first screw 2, the output shaft of the second motor 22 is fixedly connected to the second screw 3, and the output shaft of the third motor 23 is fixedly connected to the third screw 4. The first screw 2, the second screw 3, and the third screw 4 are partially provided with threaded portions, the threaded portion of the first screw 2 forms a threaded fit with the two end slides 7, the second screw 3 forms a threaded fit with the center slide 5, and the third screw 4 forms a threaded fit with another group of two end slides 7 that are symmetrically arranged. The first motor 21 starts to drive the first screw 2 to rotate, and the rotation of the first screw 2 drives the two end slides 7 to move and change positions. The first screw 2 is connected to the center slide 5 in rotation, and the first screw 2 is also connected to the other two end slides 7 arranged symmetrically in rotation. The second motor 22 drives the second screw 3 to rotate, and the rotation of the second screw 3 drives the center slide 5 to move linearly and change positions. The third motor 23 drives the third screw 4 to rotate, and the rotation of the third screw 4 drives another group of two end slides 7 to move linearly. By independently controlling the center slide 5 and the two groups of two end slides 7, welding work is facilitated.

[0030] A moving motor 30 is fixedly mounted on the welding slide 27, and a moving screw 31 is fixedly mounted on the output shaft of the moving motor 30, and the moving screw 31 forms a threaded fit with the moving slider 28. When the moving motor 30 is started, the moving screw 31 is driven to rotate, and when the moving screw 31 is started, the moving slider 28 is driven to move, and the moving slider 28 moves and drives the welding gun 29 to move, so that when the fixed structure of the pipeline is inconvenient to work, the welding position can be fine-tuned by moving the moving slider 28.

[0031] A protective gas storage tank 32 is fixedly mounted on the movable slider 28 .

Claims

1. A marine fuel pipeline welding device, comprising a pipeline fixing mechanism and a welding mechanism, wherein the welding mechanism is fixedly mounted on the pipeline fixing mechanism, and is characterized in that: The pipeline fixing mechanism comprises a device base (1), a central slide seat (5) is slidably mounted on the device base (1), an external connection pipe (6) is fixedly mounted at the center of the central slide seat (5), two end slide seats (7) are slidably mounted on the device base (1), three-jaw chucks (8) are rotatably mounted on the two end slide seats (7), a chuck block (9) is slidably mounted on the three-jaw chuck (8), a fuel pipe (10) is fixedly clamped and mounted at the center of the chuck block (9), the fuel pipe (10) and the external connection pipe (6) are coaxial, and the two end slide seats (7), the three-jaw chuck (8), the chuck block (9), and the fuel pipe (10) are arranged on the same axis. A second group is symmetrically arranged on the other side of the device. The two groups of symmetrically arranged fuel pipes (10) are welded together through an external connecting pipe (6). The welding mechanism comprises a support plate (24). The support plate (24) is fixedly mounted on the device base (1). A top motor (25) is fixedly mounted on the support plate (24). A welding swivel (26) is fixedly mounted on the output shaft of the top motor (25). A welding slide (27) is fixedly mounted on the welding swivel (26). A movable slide (28) is slidably mounted on the welding slide (27). A welding gun (29) is fixedly mounted on the movable slide (28).

2. A marine fuel pipeline welding device according to claim 1, characterized in that: The fuel pipeline may be used in high-temperature or low-temperature applications. When the fuel pipeline is used in high-temperature applications, the external connecting pipe (6) is replaced by an internal connecting pipe (11). The internal connecting pipe (11) fixes the fuel pipe (10) from the inside of the fuel pipe (10). The materials of the external connecting pipe (6) and the internal connecting pipe (11) are both metals with a relatively large expansion coefficient.

3. A marine fuel pipeline welding device according to claim 2, characterized in that: A chuck gear (12) is fixedly mounted on the three-jaw chuck (8), a center motor (15) is fixedly mounted on the center slide (5), the center motor (15) is a double-axis motor, and spline shafts (14) are fixedly mounted on output shafts at both ends of the center motor (15), and spline gears (13) are rotatably mounted on slides (7) at both ends, and the spline gears (13) are slidably connected to the spline shafts (14).

4. A marine fuel pipeline welding device according to claim 3, characterized in that: A clamping motor (16) is fixedly mounted on the center slide (5), an internal gear (17) is fixedly mounted on the output shaft of the clamping motor (16), an outer gear ring (18) is rotatably mounted on the center slide (5), an outer ring of the outer gear ring (18) is partially in sliding contact with the center slide (5), and a sliding seat (19) is slidably mounted on the center slide (5).

5. A marine fuel pipeline welding device according to claim 4, characterized in that: A clamping wheel (20) is rotatably mounted on the sliding seat (19), and the external connecting pipe (6) is clamped and mounted at the center of a plurality of clamping wheels (20).

6. A marine fuel pipeline welding device according to claim 5, characterized in that: A first screw rod (2), a second screw rod (3) and a third screw rod (4) are rotatably mounted on a device base (1); a first motor (21), a second motor (22) and a third motor (23) are fixedly mounted on the device base (1); an output shaft of the first motor (21) is fixedly connected to the first screw rod (2); an output shaft of the second motor (22) is fixedly connected to the second screw rod (3); an output shaft of the third motor (23) is fixedly connected to the third screw rod (4); threaded portions are partially provided on the first screw rod (2), the second screw rod (3) and the third screw rod (4); the threaded portion of the first screw rod (2) forms a threaded fit with two end slides (7); the second screw rod (3) forms a threaded fit with a center slide (5); and the third screw rod (4) forms a threaded fit with another group of two end slides (7) that are symmetrically arranged.

7. A marine fuel pipeline welding device according to claim 6, characterized in that: A moving motor (30) is fixedly mounted on the welding slide seat (27), a moving screw rod (31) is fixedly mounted on the output shaft of the moving motor (30), and the moving screw rod (31) and the moving slide block (28) form a threaded fit.

8. A marine fuel pipeline welding device according to claim 7, characterized in that: A protective gas storage tank (32) is fixedly mounted on the movable slide block (28).

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