Circumferential welding automatic rotating device for large wind power structural component

Abstract

The utility model belongs to the technical field of rotating devices, and discloses an automatic rotating device for circumferential welding of a large wind power structural component, which comprises a fixed turntable lower bracket, a fixed turntable upper bracket is rotatably arranged on the upper surface of the fixed turntable lower bracket, and a rotor bracket is fixedly arranged on the upper surface of the fixed turntable upper bracket; a variable-frequency and variable-speed motor is fixedly arranged on the inner wall of the fixed rotary table lower support, a gear is fixedly arranged at the output end of the variable-frequency and variable-speed motor, the outer side of the gear is in meshed connection with a pivotal bearing, and the outer side of the pivotal bearing is in running fit with the fixed rotary table lower support. According to the utility model, the rotor bracket can stably rotate on the rotating device through the pivotal bearing and the gear, so that the labor intensity of workers is reduced, the appearance quality of welding seams is improved, the production efficiency is improved, the production cost is reduced, the product quality requirements of customers are met, and the market competitiveness of products is enhanced.

Description

Technical Field

[0001] This utility model belongs to the field of rotating device technology, specifically an automatic rotating device for circumferential welding of large wind power structural components. Background Technology

[0002] The automatic rotating device for circumferential welding of large wind turbine structural components is suitable for circumferential welding operations of large structural components in the wind power equipment manufacturing field. In the wind power equipment production workshop, when large wind turbine structural components such as wind turbine towers and hubs need to be welded in the circumferential direction, it is necessary to ensure the stability of the structural components and the welding quality during the welding process, thereby improving the efficiency and accuracy of circumferential welding operations of large wind turbine structural components.

[0003] However, the following problems were found in the implementation of the relevant technologies:

[0004] When welding the impeller-side sealing flange on the rotor support, manual welding with carbon dioxide gas protection is used. After welding a section of the circumference, the welder needs to move to another station to continue welding. Because the diameter of the rotor impeller-side sealing flange is more than 4 meters, welding the entire circumference weld requires moving to multiple stations, which is labor-intensive, makes welders prone to fatigue, and poses safety hazards. On the other hand, the appearance quality of the lap weld is poor due to multi-station and multi-segment welding. The rotor impeller-side sealing flange is usually located below the rotor conical support, resulting in a harsh welding environment. Utility Model Content

[0005] To address the problems mentioned in the background section, this invention provides an automatic rotating device for circumferential welding of large wind turbine structural components, which offers advantages such as stable rotation and improved circumferential welding quality. This invention utilizes slewing bearings and gears to ensure stable rotation of the rotor support on the rotating device, reducing worker workload, improving weld appearance quality, increasing production efficiency, lowering production costs, meeting customer product quality requirements, and enhancing product market competitiveness.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an automatic rotating device for circumferential welding of large wind power structural components, including a fixed turntable lower support, a fixed turntable upper support rotatably mounted on the upper surface of the fixed turntable lower support, a rotor support fixedly mounted on the upper surface of the fixed turntable upper support, a variable frequency speed control motor fixedly mounted on the inner wall of the fixed turntable lower support, a gear fixedly mounted on the output end of the variable frequency speed control motor, a slewing bearing meshing with the outer side of the gear, and the outer side of the slewing bearing rotatably cooperating with the fixed turntable lower support.

[0007] Preferably, a tapered support frame is fixedly provided on the lower surface of the rotor support, and the tapered support frame is in contact with the upper surface of the support on the fixed turntable.

[0008] Preferably, multiple positioning bolts are inserted on the outer side of the slewing bearing, and the positioning bolts are fixedly engaged with the lower inner wall of the bracket on the fixed turntable.

[0009] Preferably, the inner thread of the bracket on the fixed turntable is provided with multiple fine-adjustment bolts, one end of which is in contact with the lower surface of the rotor bracket.

[0010] Preferably, an impeller-side sealing flange is fixedly provided on the lower surface of the rotor support, and the impeller-side sealing flange is fixedly fitted to the outer side of the support on the fixed turntable.

[0011] Preferably, a positioning flange is fixedly provided on the lower surface of the rotor support, and the positioning flange is fixedly engaged with the outer side of the support on the fixed turntable.

[0012] Preferably, the variable frequency speed control motor is fixed to the inner wall of one side of the fixed turntable support by bolts.

[0013] Preferably, multiple positioning stops are fixed on the outer side of the bracket on the fixed turntable.

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

[0015] 1. This utility model uses a rotary bearing and gears to enable the rotor support to rotate stably on the rotating device, which reduces the labor intensity of workers, improves the appearance quality of welds, increases production efficiency, reduces production costs, meets customer product quality requirements, and enhances product market competitiveness. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic cross-sectional view of the structure of this utility model;

[0018] Figure 3 This is a schematic cross-sectional view of the rotor support mounting structure of this utility model;

[0019] Figure 4 This is a top view of the structure of this utility model.

[0020] In the diagram: 1. Fixed turntable upper support; 2. Fixed turntable lower support; 3. Rotary bearing; 4. Gear; 5. Variable frequency speed control motor; 6. Fine adjustment bolt; 7. Positioning bolt; 8. Impeller side sealing flange; 9. Conical support frame; 10. Positioning flange; 11. Rotor support. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. 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.

[0022] like Figures 1 to 4 As shown, this utility model provides an automatic rotating device for circumferential welding of large wind power structural components, including a fixed turntable lower support 2, a fixed turntable upper support 1 rotatably mounted on the upper surface of the fixed turntable lower support 2, a rotor support 11 fixedly mounted on the upper surface of the fixed turntable upper support 1, a variable frequency speed control motor 5 fixedly mounted on the inner wall of the fixed turntable lower support 2, a gear 4 fixedly mounted on the output end of the variable frequency speed control motor 5, a slewing bearing 3 meshing with the outer side of the gear 4, and the outer side of the slewing bearing 3 rotatably engaging with the fixed turntable lower support 2. A bridge crane hoists the rotor support 11 onto the fixed turntable upper support 1. The positioning flange 10 in the rotor support 11 is connected to the positioning stop of the fixed turntable upper support 1. By rotating and adjusting the fine-tuning bolt 6, the center of the rotation axis of the rotor support 11 is finely adjusted. The rotating device drives the rotor support 11 to rotate. After measuring and adjusting the distances from the center of the four points on the circumference of the flange in the horizontal and vertical directions of the rotor support 11 to be consistent, Start the variable frequency speed control motor 5. The motor drives the gear 4, which transmits the motor torque to the internal gear ring of the slewing bearing 3. The speed of the slewing bearing 3 decreases and the torque increases. The fixed turntable support 1 and the rotor support 11 will rotate synchronously. The inner ring of the slewing bearing 3 is connected to the fixed turntable support 1 by the positioning bolt 7. The outer ring of the slewing bearing 3 is connected to the fixed turntable lower support 2 by the positioning bolt 7 as a fixed support. The rotor support 11 is connected and locked by the positioning stop and fine adjustment bolt 6 of the fixed turntable support 1. The welder starts the welding machine and performs semi-automatic circumferential welding on the impeller side sealing flange 8 on the rotor support 11. The welding torch is clamped by the support. The welding torch clamping point uses a directional chuck to facilitate effective adjustment of the welding torch angle and the distance between the welding wire and the arc crater. If the product speed needs to be adjusted during the welding process of different models, different diameters or the same product, the speed of the sealing flange weld bead and the welding line speed of the welding machine can be matched by controlling the speed of the variable frequency speed control motor 5.

[0023] Specifically, a conical support frame 9 is fixedly installed on the lower surface of the rotor support 11 and is made to fit against the upper surface of the support 1 on the fixed turntable. The conical support frame 9 can provide additional stable support force for the rotor support 11, effectively dispersing the pressure and stress generated by the rotor support 11 and the large wind power structural components it carries during operation, avoiding structural deformation or damage caused by excessive local stress, thereby improving the structural stability and reliability of the entire device, and ensuring that the automatic rotation operation of circumferential welding can be carried out in a long-term, stable and safe manner.

[0024] Furthermore, multiple positioning bolts 7 are inserted on the outside of the slewing bearing 3 and fixedly engaged with the lower inner wall of the bracket 1 on the fixed turntable. The positioning bolts 7 can precisely limit the displacement of the slewing bearing 3 in the horizontal direction, ensuring that the slewing bearing 3 and the bracket 1 on the fixed turntable maintain a precise relative position, preventing the slewing bearing 3 from shifting due to vibration or external force during operation, and ensuring that the gear 4 and the slewing bearing 3 are always in good meshing condition.

[0025] Furthermore, multiple fine-tuning bolts 6 are threaded into the inner side of the bracket 1 on the fixed turntable, with one end of them fitting against the lower surface of the rotor bracket 11. By rotating the fine-tuning bolts 6, the vertical height of the rotor bracket 11 can be adjusted slightly, thereby enabling precise control of the levelness of the rotor bracket 11 and the large wind power structural components it supports.

[0026] It is worth noting that an impeller-side sealing flange 8 is fixedly installed on the lower surface of the rotor support 11 and is fixedly fitted to the outer side of the support 1 on the fixed turntable. The impeller-side sealing flange 8 can effectively prevent external dust, impurities, moisture and other substances from entering the internal space of the support 1 on the fixed turntable, and avoid these foreign objects from causing wear, corrosion or jamming to internal transmission components such as gears 4 and rotary bearings 3, thereby extending the service life of these key components and reducing the maintenance cost of the device.

[0027] It is worth noting that a positioning flange 10 is fixedly installed on the lower surface of the rotor support 11 and is fixedly engaged with the outer side of the support 1 on the fixed turntable. The positioning flange 10 can accurately define the relative position between the rotor support 11 and the support 1 on the fixed turntable. During the installation of the device, it ensures that the two can quickly and accurately complete the docking and positioning, which greatly shortens the installation time and improves the installation efficiency.

[0028] It is worth mentioning that the variable frequency speed control motor 5 is fixed to the inner wall of one side of the fixed turntable lower support 2 by bolts, which can ensure that a stable connection is formed between the variable frequency speed control motor 5 and the fixed turntable lower support 2, effectively resisting the vibration and torque generated by the motor during operation, and preventing the motor from being unstable or damaged due to loosening.

[0029] It is worth emphasizing that the multiple positioning stops fixed on the outer side of the fixed turntable bracket 1 are of great significance to the assembly accuracy and operational stability of the device. The positioning stops can play a precise guiding and positioning role during the assembly process. When the fixed turntable upper bracket 1 is installed on the fixed turntable lower bracket 2, the positioning stops can quickly guide the two to accurately align, ensuring that the relative positional accuracy between the components meets the design requirements, greatly shortening the assembly time and improving the assembly efficiency.

[0030] The variable frequency speed control motor 5 is existing technology and will not be described in detail. Additionally, this utility model also includes a power supply, controller, and switch, which are not the main technical points of this patent and will not be described in detail. The "front, rear, left, and right" perspectives of this device are... Figure 1 The direction shown in the diagram is the reference.

[0031] Working principle: The bridge crane hoists the rotor support 11 onto the fixed turntable support 1. The positioning flange 10 in the rotor support 11 connects with the positioning stop of the fixed turntable support 1. By rotating and adjusting the fine-tuning bolt 6, the center of the rotation axis of the rotor support 11 is finely adjusted. The rotating device drives the rotor support 11 to rotate. After measuring and adjusting the distances from the center of the four points on the circumference of the flange in the horizontal and vertical directions of the rotor support 11 to be consistent, the variable frequency speed control motor 5 is started. The motor drives the gear 4, which transmits the motor torque to the internal gear ring of the slewing bearing 3. The speed of the slewing bearing 3 decreases and the torque increases. The fixed turntable support 1 and the rotor support 11 will rotate synchronously. The inner ring of the slewing bearing 3 and the fixed turntable support 1... The turntable support 1 is connected as one unit by positioning bolts 7. The outer ring of the slewing bearing 3 is connected to the fixed turntable lower support 2 by positioning bolts 7 for fixed support. The rotor support 11 is connected and locked by the positioning stop and fine-tuning bolts 6 of the fixed turntable support 1. The welder starts the welding machine and performs semi-automatic circumferential welding on the impeller side sealing flange 8 on the rotor support 11. The welding torch is clamped by the support. The welding torch clamping point uses a directional chuck to facilitate effective adjustment of the welding torch angle, welding wire and arc crater distance. If the product speed needs to be adjusted during the welding process of different models, different diameters or the same product, the speed of the variable frequency speed control motor 5 can be controlled to achieve the goal of matching the welding speed of the sealing flange weld with the welding machine welding line speed.

[0032] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An automatic rotating device for circumferential welding of large wind turbine structural components, comprising a fixed turntable under support (2), characterized in that: The upper surface of the fixed turntable lower support (2) is rotatably provided with a fixed turntable upper support (1), the upper surface of the fixed turntable upper support (1) is fixedly provided with a rotor support (11), the inner wall of the fixed turntable lower support (2) is fixedly provided with a variable frequency speed control motor (5), the output end of the variable frequency speed control motor (5) is fixedly provided with a gear (4), the outer side of the gear (4) is meshed with a slewing bearing (3), and the outer side of the slewing bearing (3) is rotatably engaged with the fixed turntable lower support (2).

2. The automatic rotating device for circumferential welding of large wind power structural components according to claim 1, characterized in that: The lower surface of the rotor support (11) is fixedly provided with a conical support frame (9), which is in contact with the upper surface of the support frame (1) on the fixed turntable.

3. The automatic rotating device for circumferential welding of large wind power structural components according to claim 1, characterized in that: Multiple positioning bolts (7) are inserted on the outer side of the slewing bearing (3), and the positioning bolts (7) are fixedly engaged with the lower inner wall of the bracket (1) on the fixed turntable.

4. The automatic rotating device for circumferential welding of large wind power structural components according to claim 1, characterized in that: Multiple fine-tuning bolts (6) are threaded into the inner side of the bracket (1) on the fixed turntable, and one end of the fine-tuning bolt (6) is in contact with the lower surface of the rotor bracket (11).

5. The automatic rotating device for circumferential welding of large wind power structural components according to claim 1, characterized in that: The rotor support (11) is fixedly provided with an impeller-side sealing flange (8) on its lower surface, and the impeller-side sealing flange (8) is fixedly engaged with the outer side of the support (1) on the fixed turntable.

6. The automatic rotating device for circumferential welding of large wind power structural components according to claim 1, characterized in that: The lower surface of the rotor support (11) is fixedly provided with a positioning flange (10), and the positioning flange (10) is fixedly engaged with the outer side of the support (1) on the fixed turntable.

7. The automatic rotating device for circumferential welding of large wind power structural components according to claim 1, characterized in that: The variable frequency speed control motor (5) is fixed to the inner wall of one side of the fixed turntable support (2) by bolts.

8. The automatic rotating device for circumferential welding of large wind power structural components according to claim 1, characterized in that: Multiple positioning stops are fixed on the outer side of the bracket (1) on the fixed turntable.

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