A cable protection device for the circumferential weld of a tower barrel

Abstract

The present invention discloses a cable protection device for the girth welding of a tower barrel, which includes a tower barrel body. A welding trolley is placed inside the tower barrel body, and a welding cable that can provide power for the welding trolley is connected to the left side of the welding trolley. A bidirectional lead screw for adjusting flange edges of different widths is arranged on the left side of the tower barrel body, and a first knob is welded to the left end of the bidirectional lead screw. A connecting rod is installed below the inner side of the adjusting rod, and an angle adjusting mechanism for adjusting and clamping flanges at different angles is arranged on the outer side below the adjusting rod. A limiting rod is arranged at the lower end of the adjusting rod, and a driven rod is installed above the limiting rod. Through the angle adjusting mechanism of the present invention, the limiting wheel can rollingly contact both sides of the left flange of the tower barrel body at different angles, thereby enabling the pulley to be applicable to tower barrel bodies of different models, and further increasing the applicability of the cable protection device for the girth welding of the tower barrel.

Description

Technical Field

[0001] The present invention relates to the technical field of welding equipment, and particularly to a cable protection device for circumferential seam welding of a wind turbine tower barrel. Background Art

[0002] When manufacturing a wind turbine tower barrel, since the wind turbine tower is of a ring structure, hollow inside, and has a large size, its welding process is usually carried out outside the workshop. The wind turbine tower barrel is made by splicing multiple tower rings, so it is necessary to carry out butt welding on the circumferential seams of the spliced tower rings. During the actual welding operation, usually a welder is located inside the wind turbine tower barrel, and the wind turbine tower barrel needs to be slowly rolled during the circumferential seam welding. The spliced circumferential seam is welded by a semi-automatic submerged arc welding trolley, which helps to weld the entire circumference of the internal circumferential seam of the wind turbine tower barrel. However, the trolley draws power from the connection between the welding cable and the workshop power supply box. Since the welding cable connects the trolley and the workshop power supply box, it is easy to cause the continuous rotation of the cylinder body during the welding process, the continuous movement of the trolley inside the cylinder body, and the continuous friction between the welding cable and the cylinder flange, making the welding cable prone to skin breakage and damage, posing a great safety hazard. Therefore, it is necessary to provide a cable protection device for circumferential seam welding of a wind turbine tower barrel to solve the above technical problems. Summary of the Invention

[0003] The purpose of the present invention is to provide a cable protection device for circumferential seam welding of a wind turbine tower barrel to solve the problem that in the existing circumferential seam welding of the tower barrel body, the welding trolley continuously moves inside the cylinder body, and the welding cable continuously rubs against the cylinder flange, making the welding cable prone to skin breakage and damage, posing a great safety hazard. The technical solution of the present invention provides a solution significantly different from the prior art for the technical problem that the prior art solution is too single.

[0004] To achieve the above purpose, the present invention provides the following technical solution: A cable protection device for circumferential seam welding of a wind turbine tower barrel, including a tower barrel body. A welding trolley is placed inside the tower barrel body, and a welding cable that can provide power to it is connected to the left side of the welding trolley. A bidirectional lead screw for adjusting flange edges of different widths is arranged on the left side of the tower barrel body, and a first knob is welded to the left end of the bidirectional lead screw. A first sprocket mechanism is key-connected to the outer side of the bidirectional lead screw, and adjusting rods are threadedly connected to the left and right outer sides of the bidirectional lead screw. A connecting rod is installed below the inner side of the adjusting rod, and an angle adjusting mechanism for adjusting and clamping flanges at different angles is arranged on the outer side below the adjusting rod. A limiting rod is arranged at the lower end of the adjusting rod, and a limiting wheel is movably connected below the limiting rod. A driven rod is installed above the limiting rod.

[0005] In a further embodiment, the upper end of the adjusting rod is movably connected to a pulley through an axis rod, and two groups of pulleys are arranged on opposite sides of the vertical center line of the bidirectional screw, and the opposite sides of the two pulleys are in contact with the two side surfaces of the left flange of the tower body.

[0006] In a further embodiment, the welding cable is located above and outside the pulley.

[0007] In a further embodiment, the end of the connecting rod is movably connected to a traveling wheel, and the traveling wheel is located on the inner ring of the left flange of the tower body.

[0008] In a further embodiment, the angle adjustment mechanism includes a fixed plate welded to the outside of the adjusting rod, and a threaded rod is connected to the bearing on the inner side of the fixed plate, a second knob is fixed to the upper end of the threaded rod, and a rack plate is threadedly connected to the outer side of the threaded rod, and a light rod is connected to the inner side of the rack plate.

[0009] In a further embodiment, a transmission gear is fixed to the outer side of the driven rod, and the outer side of the transmission gear is meshed with one side of the rack plate.

[0010] The two ends of the driven rod are movably connected to the adjusting rod.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] 1. The present invention is provided with pulleys. When the tower body is circumferentially welded by the welding trolley, the two pulleys can be used to effectively overlap the welding cables under the action of the simultaneous slow rolling of the tower body and the welding trolley. Compared with the existing technology, the present invention avoids the problem of long-term friction between the welding cable connected to the welding trolley and the left flange of the tower body when the welding trolley is performing circumferential welding on the tower body, that is, the problem of wear and tear, thereby improving the service life and safety of the welding cable;

[0013] 2. The present invention is provided with a bidirectional screw rod and an angle adjustment mechanism. By rotating the bidirectional screw rod, the adjusting rods on the left and right sides, i.e., the two pulleys corresponding to the upper ends, can be driven to move inward and outward, so that the two pulleys can be adapted to flanges of different widths. The rack plate cooperates with the up and down movement of the threaded rod when rotating, so that the rack plate can drive the transmission gear, the driven rod, the limit rod and the limit wheel to rotate, thereby effectively making the limit rod and the limit wheel swing left and right around the bottom end of the adjusting rod. Compared with the existing technology, the limit wheel can be in rolling contact with the two side surfaces of the left flange of the tower body at different angles, thereby realizing that the pulley can be adapted to tower bodies of different models, thereby increasing the applicability of the tower annular seam welding cable protection device. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 Schematic structural diagram of a preferred embodiment of the cable protection device for the circumferential seam welding of the tower barrel provided by the present invention;

[0015] Figure 2 For Figure 1 Schematic installation structure diagram of the adjusting rod and the pulley shown;

[0016] Figure 3 For Figure 2 Schematic installation structure diagram of the threaded rod and the rack plate shown;

[0017] Figure 4 For Figure 2 Schematic enlarged structure diagram at position A shown.

[0018] In the figure: 1, tower barrel body; 2, welding trolley; 3, welding cable; 4, bidirectional lead screw; 5, first knob; 6, first sprocket mechanism; 7, adjusting rod; 701, pulley; 8, connecting rod; 801, traveling wheel; 9, angle adjusting mechanism; 901, fixing plate; 902, threaded rod; 903, second knob; 904, rack plate; 905, smooth rod; 10, limiting rod; 11, limiting wheel; 12, driven rod; 1201, transmission gear. Specific embodiments

[0019] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0020] Please refer to Figures 1-4, an embodiment provided by the present invention: a cable protection device for circumferential seam welding of a tower barrel, including a tower barrel body 1, a welding trolley 2, a welding cable 3, a bidirectional lead screw 4, a first knob 5, a first sprocket mechanism 6, an adjusting rod 7, a pulley 701, a connecting rod 8, a traveling wheel 801, an angle adjusting mechanism 9, a fixing plate 901, a threaded rod 902, a second knob 903, a rack plate 904 and a smooth rod 905, a limiting rod 10, a limiting wheel 11, a driven rod 12 and a transmission gear 1201. The welding trolley 2 is placed inside the tower barrel body 1, and the welding cable 3 that can provide power for it is connected to the left side of the welding trolley 2. The bidirectional lead screw 4 that can adjust flange edges of different widths is arranged on the left side of the tower barrel body 1, and the first knob 5 is welded to the left end of the bidirectional lead screw 4. The first sprocket mechanism 6 is key-connected to the outside of the bidirectional lead screw 4, and the adjusting rods 7 are threadedly connected to the left and right outsides of the bidirectional lead screw 4. The connecting rod 8 is installed below the inner side of the adjusting rod 7, and the angle adjusting mechanism 9 that can adjust and clamp flanges at different angles is arranged on the outside below the adjusting rod 7. The limiting rod 10 is arranged at the lower end of the adjusting rod 7, and the limiting wheel 11 is movably connected below the limiting rod 10. The driven rod 12 is installed above the limiting rod 10. Embodiment

[0021] Please refer to Figures 1-4, a pulley 701 is movably connected to the upper end of the adjusting rod 7 through a shaft rod, and two sets of pulleys 701 are arranged on the opposite side of the vertical center line of the bidirectional lead screw 4. The opposite sides of the two pulleys 701 are in contact with the two side surfaces of the left flange of the tower barrel body 1. The welding cable 3 is located above and outside the pulley 701. The angle adjusting mechanism 9 includes a fixing plate 901 welded to the outside of the adjusting rod 7. A threaded rod 902 is connected to the inside of the fixing plate 901 by a bearing. A second knob 903 is fixed to the upper end of the threaded rod 902. A rack plate 904 is threadedly connected to the outside of the threaded rod 902. A smooth rod 905 penetrates through the inside of the rack plate 904. A transmission gear 1201 is fixed to the outside of the driven rod 12. The outside of the transmission gear 1201 meshes with one side of the rack plate 904. Both ends of the driven rod 12 are movably connected to the adjusting rod 7. A traveling wheel 801 is movably connected to the end of the connecting rod 8. The traveling wheel 801 is located inside the inner ring of the left flange of the tower barrel body 1. First, adjust the welding head of the welding trolley 2 so that the welding head is aligned with the splicing circumferential seam of the tower barrel body 1. Then, push the tower barrel body 1 through the existing pushing mechanism to roll slowly. At this time, the welding trolley 2 will also slowly move along with the rolling of the tower barrel body 1 through the bottom wheels, so as to weld the circumferential seam of the tower barrel body 1. The welding cable 3 connected to the left side of the welding trolley 2 will also move in a circle along with it. In order to prevent the welding cable 3 from being worn and damaged by the edges and corners of the left flange of the tower barrel body 1 during long-term use, the welding cable 3 can be placed above the two pulleys 701. The pulley 701 is movably connected to the adjusting rod 7 through a shaft rod. The opposite sides of the two adjusting rods 7 are movably connected to the traveling wheels 801. The two traveling wheels 801 are located on the inner wall of the inner ring of the left flange of the tower barrel body 1, forming a rolling connection. At the same time, a limiting wheel 11 is movably connected below the limiting rod 10. The opposite sides of the two limiting wheels 11 are located on the two side surfaces of the left flange of the tower barrel body 1, also forming a rolling connection. Therefore, when the tower barrel body 1 rotates slowly, the two pulleys 701 can cooperate with the traveling wheels 801 and the limiting wheels 11 to slowly move on the inner wall of the inner ring of the left flange of the tower barrel body 1. Furthermore, the welding cable 3 lapped above the two pulleys 701 can also move in a circle along with the tower barrel body 1 and the welding trolley 2. Therefore, effectively avoiding the problem that the welding cable 3 connected to the welding trolley 2 and the left flange of the tower barrel body 1 are in long-term friction during the circumferential seam welding of the tower barrel body 1, that is, the problems of wear and skin breakage, thus improving the service life and safety of the welding cable 3;For the tower barrel body 1 of different models, the angles and widths of both sides of its left flange are also different. In order to make the cable protection device more widely applicable, when facing the two sides of the flange with different angles and widths, by rotating the bidirectional lead screw 4, the adjusting rods 7 on the left and right sides, that is, the two pulleys 701 corresponding to the upper ends, can be driven to move in and out, so that the two pulleys 701 can be applied to flanges with different widths. When facing the two sides of the flange with different angles, the second knob 903 can be manually rotated to drive the threaded rod 902 to rotate, so that the rack plate 904 moves up and down in cooperation with the rotation of the threaded rod 902, so that the rack plate 904 drives the transmission gear 1201 to rotate, and drives the driven rod 12, the limiting rod 10 and the limiting wheel 11 to swing left and right around the bottom end of the adjusting rod 7, so that the limiting wheel 11 can rollingly contact the two sides of the left flange of the tower barrel body 1 with different angles, thus realizing that the pulley 701 can be applied to the tower barrel body 1 of different models, and further increasing the applicability of the cable 3 protection device for the girth welding of the tower barrel.;

[0022] Working principle: When in use, as Figures 1-3 shown, first adjust the welding head of the welding trolley 2 so that the welding head is aligned with the splicing girth of the tower barrel body 1, and then push the tower barrel body 1 to roll slowly through the existing pushing mechanism. At this time, the welding trolley 2 will also slowly move forward with the rolling of the tower barrel body 1 through the bottom wheels, so as to weld the girth of the tower barrel body 1. Moreover, the welding cable 3 connected to the left side of the welding trolley 2 will also move in a circular motion along with it. In order to prevent the welding cable 3 from being worn and broken by the edges and corners of the left flange of the tower barrel body 1 during long-term use, the welding cable 3 can be placed above the two pulleys 701. The pulley 701 is movably connected to the adjusting rod 7 through a shaft rod, and the two adjusting rods 7 are movably connected with walking wheels 801 on the opposite sides, and the two walking wheels 801 are located on the inner wall of the left flange of the tower barrel body 1 to form a rolling connection. At the same time, a limiting wheel 11 is movably connected below the limiting rod 10, and the opposite sides of the two limiting wheels 11 are located on the two sides of the left flange of the tower barrel body 1, also forming a rolling connection. Therefore, when the tower barrel body 1 rotates slowly, the two pulleys 701 can cooperate with the walking wheels 801 and the limiting wheels 11 to slowly move on the inner wall of the left flange of the tower barrel body 1, so that the welding cable 3 lapped above the two pulleys 701 also moves in a circular motion along with the tower barrel body 1 and the welding trolley 2. Therefore, effectively avoiding the problem that when the welding trolley 2 welds the girth of the tower barrel body 1, the welding cable 3 connected to the welding trolley 2 rubs against the left flange of the tower barrel body 1 for a long time, that is, the problems of wear and breakage, thus improving the service life and safety of the welding cable 3;

[0023] As Figures 2-4As shown in the figure, for the tower barrel bodies 1 of different models, the angles and widths of the two sides of the left flange are also different. In order to make the cable protection device more widely applicable, when facing the two sides of the flange with different angles and widths, by rotating the bidirectional screw rod 4, the adjusting rods 7 on the left and right sides, that is, the two pulleys 701 corresponding to the upper ends, can be driven to move in and out, so that the two pulleys 701 can be applicable to flanges with different widths. When facing the two sides of the flange with different angles, the second knob 903 can be manually rotated to drive the threaded rod 902 to rotate, so that the rack plate 904 moves up and down in cooperation with the rotation of the threaded rod 902, so that the rack plate 904 drives the transmission gear 1201 to rotate, and drives the driven rod 12, the limiting rod 10 and the limiting wheel 11 to swing left and right around the bottom end of the adjusting rod 7, so that the limiting wheel 11 can rollingly contact the two sides of the left flange of the tower barrel body 1 with different angles, thus realizing that the pulley 701 can be applicable to the tower barrel bodies 1 of different models, and further increasing the applicability of the cable 3 protection device for the girth welding of the tower barrel.

[0024] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention. Any reference signs in the claims should not be regarded as limiting the claims involved.

Claims

1. A cable protection device for the circumferential seam welding of a tower barrel, comprising a tower barrel body (1), characterized in that: Inside the tower barrel body (1), a welding trolley (2) is placed, and a welding cable (3) that can supply power to it is connected to the left side of the welding trolley (2). A bidirectional lead screw (4) that can adjust flange edges of different widths is arranged on the left side of the tower barrel body (1). A first knob (5) is welded to the left end of the bidirectional lead screw (4). A first sprocket mechanism (6) is key-connected to the outer side of the bidirectional lead screw (4). Adjusting rods (7) are threadedly connected to both the left and right outer sides of the bidirectional lead screw (4). A connecting rod (8) is installed below the inner side of the adjusting rod (7). An angle adjusting mechanism (9) that can adjust and clamp flanges at different angles is arranged on the outer side below the adjusting rod (7). A limiting rod (10) is arranged at the lower end of the adjusting rod (7). A limiting wheel (11) is movably connected below the limiting rod (10). A driven rod (12) is installed above the limiting rod (10). The upper end of the adjusting rod (7) is movably connected to a pulley (701) through a shaft rod. Two groups of the pulleys (701) are arranged on the opposite side of the vertical center line of the bidirectional lead screw (4). The opposite sides of the two pulleys (701) are in contact with the two side surfaces of the left flange of the tower barrel body (1). The angle adjusting mechanism (9) includes a fixing plate (901) welded to the outer side of the adjusting rod (7). A threaded rod (902) is connected to the inner side of the fixing plate (901) through a bearing. A second knob (903) is fixed to the upper end of the threaded rod (902). A rack plate (904) is threadedly connected to the outer side of the threaded rod (902). A smooth rod (905) is connected through the inner side of the rack plate (904). A transmission gear (1201) is fixed to the outer side of the driven rod (12). The outer side of the transmission gear (1201) meshes with one side of the rack plate (904).

2. The cable protection device for circumferential seam welding of a tower barrel according to claim 1, wherein: The welding cable (3) is located above and outside the pulley (701).

3. A cable protection device for the circumferential seam welding of a tower barrel according to claim 1, characterized in that: The end of the connecting rod (8) is movably connected to a traveling wheel (801). The traveling wheel (801) is located inside the inner ring of the left flange of the tower barrel body (1).

4. A cable protection device for the circumferential seam welding of a tower barrel according to claim 1, characterized in that: Both ends of the driven rod (12) are movably connected to the adjusting rod (7).

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