A low-stress welding device for wind turbine towers

Abstract

This utility model relates to the field of low-stress welding technology, specifically a low-stress welding device for wind turbine towers. It includes a mounting base installed on the upper surface of an electric flatbed cart. A rotating shaft is rotatably connected to the upper surface of the mounting base, and a gear is fixedly connected to the outer surface of the rotating shaft. A placement mechanism is slidably connected to the upper surface of the mounting base. The placement mechanism includes a sliding frame, a rack, and a support roller. Two sliding frames are slidably connected to the upper surface of the mounting base. This utility model ensures a tight fit and firm connection between the welding torch and the tower body, guaranteeing the stability of the welding process and the precise positioning of the welding torch. It also facilitates the replacement and maintenance of the welding torch, thereby improving welding efficiency and welding quality. Similarly, a flame torch can be installed on another set of adjustment mechanisms to preheat the tower body to be welded, reducing post-weld stress. The combined use of the mounting mechanism and the adjustment mechanism improves the flexibility of the device's operation.

Description

Technical Field

[0001] This utility model relates to the field of low-stress welding technology, specifically a low-stress welding device for wind turbine towers. Background Technology

[0002] The tower is assembled and welded from several sections. Welding devices are required to weld the sections together. For details, please refer to the circumferential welding device for a wind turbine tower described in announcement number CN222903060U. The device includes a fixed base plate with a connecting mechanism. The connecting mechanism includes a connecting component located in the middle section of the fixed base plate. The connecting component is connected to the circumferential welding component. Limiting components are provided on both sides of the fixed base plate. Limiting grooves are provided on both sides of an annular rack that is slidably connected to the outer wall of the fixed slider. A drive motor is fixedly installed on the inner side of a connecting frame that is slidably connected to the limiting grooves.

[0003] Although the above-mentioned device can perform welding, its functionality is limited. For example, the lack of preheating before welding can easily lead to welding quality problems. In addition, the tower specifications are diverse, and some towers are large in volume. Manually rotating multiple knobs to fix them is inconvenient, especially for knobs located at high positions. Therefore, the above-mentioned fixing method is not convenient enough. Utility Model Content

[0004] The purpose of this invention is to provide a low-stress welding device for wind turbine towers to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A low-stress welding device for wind turbine towers includes a mounting base installed on the upper surface of an electric flatbed cart, wherein a rotating shaft is rotatably connected to the upper surface of the mounting base, and a gear is fixedly connected to the outer surface of the rotating shaft.

[0007] The upper surface of the mounting base is slidably connected to a placement mechanism, which includes a sliding frame, a rack, and a support roller. There are two sliding frames slidably connected to the upper surface of the mounting base, and two racks are fixedly connected to adjacent surfaces of the sliding frames. Limiting holes are opened at corresponding positions on the outer surface of the sliding frames and the racks. The support roller is rotatably connected to the inner surface of the sliding frames. An integrated motor reducer is fixedly connected to the rear surface of one of the sliding frames, and the output end of the integrated motor reducer is fixedly connected to the support roller.

[0008] Furthermore, a baffle is fixedly connected to the upper surface of the mounting base, a cylinder is fixedly connected to the side surface of the baffle, the output end of the cylinder is fixedly connected to one of the sliding frames, and the two racks are connected by the gear meshing.

[0009] Furthermore, the upper surface of the mounting base is fixedly connected to an installation mechanism, which includes a fixed base, a limiting rod, and a slide. The fixed base is fixedly connected to the outer surface of the baffle, the limiting rod is embedded in the upper surface of the fixed base, and the slide is slidably connected to the outer surface of the limiting rod. A connecting sleeve is fixedly connected to the outer surface of the slide.

[0010] Furthermore, the outer surface of the fixed base is threaded with a first knob, the outer surface of the slide is threaded with a second knob, and the outer surface of the connecting sleeve is threaded with a third knob.

[0011] Furthermore, the connecting sleeve is internally embedded with an adjusting mechanism, which includes a sliding plate, a first adjusting screw, a second adjusting screw, a mounting nut, and a cylinder. The sliding plate is slidably connected to the inside of the connecting sleeve, the first adjusting screw is rotatably connected to the side surface of the sliding plate, a movable seat is slidably connected to the outer surface of the sliding plate, the second adjusting screw is rotatably connected to the lower surface of the movable seat, the mounting nut is threadedly connected to the outer surface of the second adjusting screw, the cylinder is fixedly connected to the lower surface of the mounting nut, and a fourth knob is threadedly connected to the outer surface of the cylinder.

[0012] Furthermore, the first adjusting screw and the moving seat are threadedly connected, and the mounting nut and the moving seat are slidably connected.

[0013] Furthermore, a welding torch is embedded inside the cylinder.

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

[0015] 1. The output end of the integrated motor reducer drives the support roller to rotate, which in turn drives the tower body to rotate. When one of the sliding frames moves, it drives the other rack to move through the rack and gear, further causing the two sliding frames to move inward or outward synchronously. The limiting hole limits the movement of the rack, so that the device can be used for tower bodies of different sizes.

[0016] 2. The cylinder serves as a support structure for the welding torch, providing a stable mounting platform. Its internal embedded connection ensures a tight fit and secure connection between the welding torch and the cylinder, guaranteeing the stability of the welding process and the precise positioning of the welding torch. This facilitates the replacement and maintenance of the welding torch, thereby improving welding efficiency and quality. Similarly, a flame torch can be installed on another set of adjustment mechanisms to preheat the tower body to be welded, reducing post-weld stress. The combined use of the installation and adjustment mechanisms enhances the flexibility of the equipment. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the structure of this utility model in use;

[0019] Figure 3 This is a schematic diagram of the placement mechanism of this utility model;

[0020] Figure 4 This is a schematic diagram of the disassembled structure of the adjustment mechanism of this utility model.

[0021] In the diagram: 1. Electric flatcar; 101. Guide rail; 2. Mounting base; 201. Baffle; 202. Rotating shaft; 203. Gear; 204. Cylinder; 3. Placement mechanism; 301. Sliding frame; 302. Limiting hole; 303. Support roller; 304. Rack; 4. Integrated motor reducer; 5. Mounting mechanism; 501. Fixed base; 502. First knob; 503. Limiting rod; 504. Slide seat; 505. Second knob; 506. Connecting sleeve; 507. Third knob; 6. Adjustment mechanism; 601. Sliding plate; 602. First adjusting screw; 603. Moving base; 604. Second adjusting screw; 605. Mounting nut; 606. Cylinder body; 607. Fourth knob; 7. Welding torch; 8. Tower body. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. 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.

[0023] Please see Figure 1-4 In this embodiment of the utility model, a low-stress welding device for wind turbine towers includes a mounting base 2 installed on the upper surface of an electric flatbed 1, a rotating shaft 202 rotatably connected to the upper surface of the mounting base 2, and a gear 203 fixedly connected to the outer surface of the rotating shaft 202.

[0024] The upper surface of the mounting base 2 is slidably connected to a placement mechanism 3. The placement mechanism 3 includes a sliding frame 301, a rack 304, and a support roller 303. There are two sliding frames 301 and they are slidably connected to the upper surface of the mounting base 2. There are two racks 304 and they are respectively fixedly connected to adjacent surfaces of the sliding frames 301. Limiting holes 302 are opened on the outer surface of the sliding frames 301 and the racks 304 at corresponding positions. The support roller 303 is rotatably connected to the inner surface of the sliding frames 301. An integrated motor reducer 4 is fixedly connected to the rear surface of one of the sliding frames 301. The output end of the integrated motor reducer 4 is fixedly connected to the support roller 303.

[0025] Specifically, during use, the electric flatbed cart 1 can drive the mounting base 2 to slide along the guide rail 101. This is existing technology and will not be elaborated further here. Multiple mounting bases 2 can be used in combination, as shown in the following example. Figure 2 As shown, the tower body 8 is placed on the mounting base 2 by the placement mechanism 3. The distance between the two tower bodies 8 is adjusted by the mounting base 2 to facilitate subsequent welding. During welding, the integrated motor reducer 4 is started. The output end of the integrated motor reducer 4 drives the support roller 303 to rotate, which in turn drives the tower body 8 to rotate. When one of the sliding frames 301 moves, it drives the other rack 304 to move through the rack 304 and gear 203, further causing the two sliding frames 301 to move inward or outward synchronously. The limiting hole 302 limits the movement of the rack 304, so that the device can be used for tower bodies 8 of different sizes.

[0026] Example 1

[0027] like Figure 1-4 As shown, a baffle 201 is fixedly connected to the upper surface of the mounting base 2, and a cylinder 204 is fixedly connected to the side surface of the baffle 201. The output end of the cylinder 204 is fixedly connected to one of the sliding brackets 301, and the two racks 304 are connected by gear 203.

[0028] In this embodiment, the cylinder 204 can provide stable and reliable power to the sliding frame 301, pushing the sliding frame 301 to slide on the mounting base 2. The meshing connection between the two racks 304 and the gear 203 can ensure that the two sliding frames 301 move synchronously, ensuring the stability of the tower body 8 and the accuracy of welding.

[0029] like Figure 1-4 As shown, an installation mechanism 5 is fixedly connected to the upper surface of the mounting base 2. The installation mechanism 5 includes a fixed base 501, a limiting rod 503, and a slide 504. The fixed base 501 is fixedly connected to the outer surface of the baffle 201. The limiting rod 503 is embedded in the upper surface of the fixed base 501. The slide 504 is slidably connected to the outer surface of the limiting rod 503. A connecting sleeve 506 is fixedly connected to the outer surface of the slide 504. A first knob 502 is threadedly connected to the outer surface of the fixed base 501. A second knob 505 is threadedly connected to the outer surface of the slide 504. A third knob 507 is threadedly connected to the outer surface of the connecting sleeve 506.

[0030] In this embodiment, the mounting mechanism 5 can be securely mounted on the baffle 201 by the fixing seat 501. The cooperation between the limiting rod 503 and the slide 504 allows the slide 504 to slide smoothly on the limiting rod 503, thereby driving the connecting sleeve 506 to move. The first knob 502 abuts against the limiting rod 503 and fixes the limiting rod 503 under the push of the thread. Similarly, the second knob 505 fixes the slide 504, and the third knob 507 fixes the sliding plate 601, so that the height of the slide 504 is adjustable and the front and rear distance of the sliding plate 601 is adjustable.

[0031] Example 2

[0032] Based on Example 1, in order to overcome the problem that it is inconvenient to adjust the welding torch 7 in Example 1.

[0033] like Figure 1-4 As shown, an adjusting mechanism 6 is movably connected to the inside of the connecting sleeve 506. The adjusting mechanism 6 includes a sliding plate 601, a first adjusting screw 602, a second adjusting screw 604, a mounting nut 605, and a cylindrical body 606. The sliding plate 601 is slidably connected to the inside of the connecting sleeve 506. The first adjusting screw 602 is rotatably connected to the side surface of the sliding plate 601. A movable seat 603 is slidably connected to the outer surface of the sliding plate 601. The second adjusting screw 604 is rotatably connected to the lower surface of the movable seat 603. The mounting nut 605 is threadedly connected to the outer surface of the second adjusting screw 604. The cylindrical body 606 is fixedly connected to the lower surface of the mounting nut 605. A fourth knob 607 is threadedly connected to the outer surface of the cylindrical body 606. The first adjusting screw 602 and the movable seat 603 are threadedly connected, and the mounting nut 605 and the movable seat 603 are slidably connected.

[0034] In this embodiment, the adjustment mechanism 6 effectively solves the problem of inconvenient adjustment of the welding torch 7. The sliding plate 601 can slide inside the connecting sleeve 506, making the overall distance between the welding torch 7 and the tower body 8 adjustable. With the rotation of the first adjusting screw 602 and the second adjusting screw 604, when the first adjusting screw 602 rotates, the moving seat 603 moves back and forth to finely adjust the distance between the welding torch 7 and the tower body 8. After the second adjusting screw 604 rotates, the welding torch 7 can move left and right under the push of the thread, making it easier for the welding torch 7 to be aligned with the weld position. The welding torch 7 can be flexibly adjusted in multiple directions. The sliding connection between the moving seat 603 and the sliding plate 601 and the threaded connection with the second adjusting screw 604 can adapt to different welding requirements and welding positions.

[0035] like Figure 1-4 As shown, a welding torch 7 is embedded inside the cylinder 606.

[0036] In this embodiment, the cylinder 606 serves as a support structure for the welding torch 7, providing a stable mounting platform for the torch 7. Its internal embedded connection ensures a tight fit and firm connection between the welding torch 7 and the cylinder 606, guaranteeing the stability of the welding process and the precise positioning of the welding torch 7. This facilitates the replacement and maintenance of the welding torch 7, thereby improving welding efficiency and welding quality. Similarly, a flame torch is installed on another set of adjustment mechanisms 6, which can preheat the tower body 8 to be welded, reducing post-weld stress. The combined use of the mounting mechanism 5 and the adjustment mechanism 6 enhances the flexibility of the device.

[0037] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0038] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A low-stress welding device for wind turbine towers, comprising a mounting base (2) installed on the upper surface of an electric flatbed (1), wherein a rotating shaft (202) is rotatably connected to the upper surface of the mounting base (2), and a gear (203) is fixedly connected to the outer surface of the rotating shaft (202). characterized in that The upper surface of the mounting base (2) is slidably connected to a placement mechanism (3), the placement mechanism (3) comprising: Two sliding brackets (301) are slidably connected to the upper surface of the mounting base (2); Two racks (304) are fixedly connected to adjacent surfaces of the sliding frame (301), and limit holes (302) are provided at corresponding positions on the outer surface of the sliding frame (301) and the racks (304). A support roller (303) is rotatably connected to the inner surface of a sliding frame (301), and an integrated motor reducer (4) is fixedly connected to the rear surface of one of the sliding frames (301). The output end of the integrated motor reducer (4) is fixedly connected to the support roller (303).

2. The wind turbine tower low stress welding apparatus of claim 1, wherein, A baffle (201) is fixedly connected to the upper surface of the mounting base (2), and a cylinder (204) is fixedly connected to the side surface of the baffle (201). The output end of the cylinder (204) is fixedly connected to one of the sliding frames (301), and the two racks (304) are meshed and connected through the gear (203).

3. The wind turbine tower low stress welding apparatus of claim 2, wherein, The upper surface of the mounting base (2) is fixedly connected to a mounting mechanism (5), the mounting mechanism (5) comprising: The fixing seat (501) is fixedly connected to the outer surface of the baffle (201); The limiting rod (503) is embedded in the upper surface of the fixed base (501); The slide (504) is slidably connected to the outer surface of the limiting rod (503), and the outer surface of the slide (504) is fixedly connected to the connecting sleeve (506).

4. The wind turbine tower low stress welding apparatus of claim 3, wherein, The outer surface of the fixed base (501) is threaded with a first knob (502), the outer surface of the slide (504) is threaded with a second knob (505), and the outer surface of the connecting sleeve (506) is threaded with a third knob (507).

5. The low-stress welding device for wind turbine towers according to claim 3, characterized in that, An adjustment mechanism (6) is movably connected to the inside of the connecting sleeve (506), the adjustment mechanism (6) comprising: The sliding plate (601) is slidably connected to the inside of the connecting sleeve (506); The first adjusting screw (602) is rotatably connected to the side surface of the sliding plate (601), and the outer surface of the sliding plate (601) is slidably connected to the movable seat (603). The second adjusting screw (604) is rotatably connected to the lower surface of the movable seat (603); The mounting nut (605) is threaded onto the outer surface of the second adjusting screw (604); The cylinder (606) is fixedly connected to the lower surface of the mounting nut (605), and the outer surface of the cylinder (606) is threaded with a fourth knob (607).

6. The wind turbine tower low stress welding apparatus of claim 5, wherein, The first adjusting screw (602) and the movable seat (603) are threadedly connected, and the mounting nut (605) and the movable seat (603) are slidably connected.

7. The wind turbine tower low stress welding apparatus of claim 5, wherein, A welding torch (7) is embedded inside the cylinder (606).

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