Anti-deformation device for large-diameter thin-wall tower cylinder

Abstract

The utility model relates to the field of wind power tower, concretely relates to a kind of anti-deformation device of large-diameter thin-wall tower vessel cylinder, comprising: ground rail and two cylinder, the bottom of the cylinder is respectively equipped with not less than two electric walking roller frame, the electric walking roller frame is all installed on ground rail, the side of ground rail is provided with cross truss manipulator, one end of the cross truss manipulator is installed with welding robot, the both ends of the electric walking roller frame are respectively connected with mounting bracket, fixed arm device is respectively equipped on the mounting bracket, still including telescopic rod assembly of driving fixed arm device swing. The utility model realizes two-point contact cylinder wall by V-shaped plate and guide wheel one, can limit cylinder wall both sides outside simultaneously, prevent top to press down and deviate, while stop lever one and stop lever two cooperate, avoid V-shaped plate excessive extrusion cylinder wall, ensure that the constraint direction is always aligned with cylinder wall radial, improve the limit precision.

Description

Technical Field

[0001] This utility model relates to the field of wind turbine towers, and in particular to an anti-deformation device for a large-diameter thin-walled tower body. Background Technology

[0002] The wind turbine tower is the core support structure of a wind turbine generator set. Its main function is to elevate the nacelle and blades to a height that meets the power generation requirements. It also bears complex forces such as the generator set's own weight, wind load, and vibration load. It needs to have high strength, high stability, and weather resistance. The material is mostly low-alloy high-strength steel such as Q345 / Q420. The tower is mainly in the form of conical or cylindrical segmented towers. The tower segments are rolled from flat steel into a cylindrical shape. During the rolling process, the outer layer of the steel plate is stretched and the inner layer is compressed, forming "radial residual stress". Therefore, although the segments are initially rounded before assembly and welding, the internal stress is not completely eliminated. When placed, the top, as the "free end" of the segment, will slowly release the residual stress, causing the top to be pressed down and shifted. At the same time, in order to maintain the overall structural balance, the two sides will undergo slight outward expansion or inward contraction deformation.

[0003] Regarding the aforementioned technologies, the inventors discovered that minute deformations can cause the roundness and straightness of tower sections to deviate from design requirements. For example, outward expansion on both sides can lead to an increased diameter, while downward pressure on the top can cause the axis to bend. Consequently, subsequent assembly of the tower sections cannot achieve precise alignment, resulting in misalignment, excessive gaps, or even complete failure to assemble. Therefore, it is necessary to prevent deformation when assembling and welding tower sections. To this end, an anti-deformation device for large-diameter thin-walled tower sections is proposed to improve the accuracy of assembly and welding of the sections. Utility Model Content

[0004] The main technical problem solved by this utility model is to provide a deformation prevention device for a large-diameter thin-walled tower shell, which prevents deformation during the assembly and welding of the shell and improves the welding assembly accuracy.

[0005] To solve the above-mentioned technical problems, the present invention provides a technical solution as follows: a deformation prevention device for a large-diameter thin-walled tower body, comprising: a ground rail and two cylinders, wherein the bottom of each cylinder is provided with no less than two electric walking roller frames, all of which are mounted on the ground rail, a cross-truss manipulator is provided on one side of the ground rail, a welding robot is mounted on one end of the cross-truss manipulator, and mounting brackets are connected to both ends of each electric walking roller frame, each mounting bracket is provided with a fixed arm device, and a telescopic rod assembly for driving the fixed arm device to swing is also included.

[0006] The fixed arm device includes no fewer than two swing arm assemblies, with several connecting ribs connecting adjacent two swing arm assemblies, and limit wheel assemblies rotatably connected to the top of each swing arm assembly.

[0007] The limiting wheel assembly includes V-shaped plates rotatably connected to both sides of the swing arm assembly. Guide wheels are rotatably connected to both ends of the V-shaped plates. Limiting rods are connected between the V-shaped plates. A connecting plate is provided at the bottom of the closed end of the V-shaped plates. Limiting rods are installed between the connecting plates. The swing arm assembly is located between limiting rods and limiting rods. It also includes reinforcing ribs connected between the V-shaped plates.

[0008] By adopting the above technical solution, the ground rail provides a fixed running track for the electric traveling roller frame. The electric traveling roller frame supports the cylinder and drives the cylinder to move on the ground rail, facilitating the adjustment of the cylinder's position to meet the needs of assembly welding. The cross-shaped truss manipulator moves flexibly in both horizontal and vertical directions, providing precise positioning and motion support for the welding robot. The welding robot then performs welding operations on the cylinder according to a preset program. The mounting bracket ensures that the fixed arm device can be firmly installed on the electric traveling roller frame, moving with the cylinder and maintaining a stable relative position with it, thus effectively preventing deformation of the cylinder. During assembly welding, the fixed arm device is driven to swing via the telescopic rod assembly, allowing it to adjust according to the cylinder's diameter and shape for better fit. The cylinder surface is fixed and supported. When the fixing arm device is attached to the cylinder, the V-shaped plate opening faces the cylinder wall, providing installation space for the guide wheel one. The V-shaped structure achieves "two-point contact" with the cylinder wall, which is more stable than single-point contact. It can simultaneously limit the outward expansion of both sides of the cylinder wall, thereby preventing its top from being pressed down and shifted. When welding the next weld point, the guide wheel one can rotate with the cylinder wall to protect the appearance and structural integrity of the thin-walled cylinder. At the same time, the limiting rod one works with the limiting rod two to limit the maximum opening angle of the V-shaped plate, avoiding deformation of the V-shaped plate due to excessive constraint force, preventing the fixing arm device from "over-squeezing" the cylinder wall when applying constraint force, and avoiding plastic deformation of the cylinder due to external force. At the same time, it ensures that the relative position of the V-shaped plate and the guide wheel one remains unchanged, ensuring that the constraint direction is always aligned with the radial direction of the cylinder wall, improving the limiting accuracy.

[0009] In a preferred embodiment, the present invention can be further configured as follows: the swing arm assembly includes two swing plates, a plurality of support rods are connected between the swing plates, the mounting bracket is symmetrically provided with L-shaped mounting plates, one end of the L-shaped mounting plate is installed between the corresponding swing plates, and one end of the L-shaped mounting plate is connected to the corresponding swing plate through a pin.

[0010] By adopting the above technical solution, the symmetrical design of the double swing plate can simultaneously constrain the limiting wheel assembly from both sides, preventing the limiting wheel from "tilting off" due to unilateral force, ensuring the fit between the guide wheel and the cylinder wall, avoiding local deformation caused by uneven fit, and providing a stable "force point" for the telescopic rod drive, ensuring that the swing arm assembly swings at a uniform angle, avoiding uneven constraint force caused by swing offset, and at the same time, by increasing the contact area with the limiting wheel assembly, reducing the local pressure on the V-shaped plate, and avoiding damage to the thin-walled cylinder wall.

[0011] In a preferred embodiment, the present invention can be further configured as follows: the telescopic rod assembly includes a hinge seat disposed on a mounting bracket, an electric push rod is connected to the hinge seat via a pin, the extended end of the electric push rod is connected to a movable sleeve, a rotating rod is rotatably connected to the movable sleeve, and the two ends of the rotating rod are respectively connected to the swing arm assembly.

[0012] By adopting the above technical solution, the hinged seat serves as the connecting transition component between the electric push rod and the mounting bracket, determining the initial installation position and angle direction of the electric push rod. This allows the electric push rod to perform telescopic movements in a specific posture, and adjusts the swing angle of the swing arm assembly during the telescopic movement of the electric push rod. This enables the position of the swing arm assembly to be quickly and accurately adjusted according to different working requirements, allowing the anti-deformation device to adapt to large-diameter thin-walled tower bodies of different specifications and shapes. Simultaneously, during the telescopic movement of the electric push rod, the movable sleeve moves along the axial direction of the rotating rod, thereby changing the effective working length of the rotating rod and further adjusting the swing amplitude of the swing arm assembly.

[0013] In a preferred embodiment, the present invention can be further configured such that: a lifting mechanism is provided on the electric traveling roller frame below one of the opposite ends of the cylinder, the lifting mechanism includes a double piston electric cylinder disposed on both sides of the electric traveling roller frame, the extended end of the double piston electric cylinder is connected to a U-shaped plate, and a guide wheel is rotatably connected to the inner side of the U-shaped plate.

[0014] By adopting the above technical solution, during the cylinder assembly and welding process, the lifting mechanism provides additional support and adjustment functions for the cylinder, the electric traveling roller frame is mainly responsible for the horizontal movement and rotation of the cylinder, while the lifting mechanism can operate the cylinder in the vertical direction. The two work together to achieve all-round control of the cylinder's position and attitude. The U-shaped plate is driven upward by the double piston electric cylinder, which causes the guide wheel two to contact the cylinder surface. During the lifting process, the guide wheel two can support the cylinder, distribute the weight of the cylinder, reduce the deformation caused by excessive local stress on the cylinder, and provide auxiliary calibration during cylinder assembly. At the same time, when the electric traveling roller frame drives the cylinder to rotate or move, the guide wheel two can rotate with the movement of the cylinder, playing a guiding role and reducing friction, making the movement of the cylinder more stable and smooth.

[0015] In a preferred embodiment, the present invention can be further configured such that: the mounting bracket includes a side plate, and the side plate is symmetrically provided with inclined plates on the side away from the swing arm assembly, and the inclined plates are respectively connected to the ends of the electric walking roller frame.

[0016] By adopting the above technical solution, during the operation of the anti-deformation device, the swing arm assembly will be subjected to various forces applied by the cylinder, such as pressure and friction. The side plate can effectively transmit and disperse these forces, avoid local stress concentration, and ensure that the mounting bracket maintains structural stability under stress, without deformation or damage. Its inclined plate can better disperse the force borne by the connection part, and improve the connection strength and stability.

[0017] In summary, the present invention includes at least one of the following beneficial technical effects of the anti-deformation device for large-diameter thin-walled tower bodies:

[0018] 1. By using a V-shaped plate and guide wheel one to achieve two-point contact with the cylinder wall, the outward expansion of both sides of the cylinder wall can be restricted at the same time, preventing the top from being pressed down and deviating. At the same time, limit rod one and limit rod two cooperate to avoid the V-shaped plate from excessively squeezing the cylinder wall, ensuring that the constraint direction is always aligned with the radial direction of the cylinder wall, thus improving the limiting accuracy. In addition, the double swing plate design of the swing arm assembly simultaneously constrains the limit wheel assembly from both sides to prevent it from tilting and deviating, ensuring that guide wheel one fits evenly with the cylinder wall, avoiding local deformation, and providing stable support for the cylinder.

[0019] 2. The lifting mechanism works in conjunction with the electric traveling roller frame to achieve all-round control over the position and attitude of the cylinder. The dual-piston electric cylinder drives the U-shaped plate to bring the second guide wheel into contact with the cylinder, supporting the cylinder, distributing the weight, reducing local deformation, and also assisting in the calibration of the cylinder assembly. The second guide wheel rotates with the movement of the cylinder, reducing friction and making the movement of the cylinder more stable and smooth. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort, wherein:

[0021] Figure 1 This is a schematic diagram of the structure of this utility model;

[0022] Figure 2 This is a schematic diagram of the fixed arm device of this utility model;

[0023] Figure 3 This is a schematic diagram of the structure of the limiting wheel assembly of this utility model;

[0024] Figure 4 for Figure 3 A sectional view;

[0025] Figure 5 This is a schematic diagram of the structure of the electric push rod of this utility model;

[0026] Figure 6 This is a schematic diagram of the lifting mechanism of this utility model.

[0027] In the diagram: 1. Ground rail; 2. Cylinder body; 3. Electric traveling roller frame; 4. Cross truss robot; 5. Welding robot; 60. Mounting bracket; 70. Fixed arm device; 80. Telescopic rod assembly; 90. Lifting mechanism;

[0028] 61. Side panel; 62. Inclined panel;

[0029] 71. Swing arm assembly; 72. Connecting rib; 73. Limit wheel assembly;

[0030] 81. Hinge seat; 82. Electric actuator; 83. Movable sleeve; 84. Rotating rod;

[0031] 91. Double-piston electric cylinder; 92. U-shaped plate; 93. Guide wheel two;

[0032] 711. Swing plate; 712. Support rod; 713. L-shaped mounting plate;

[0033] 731. V-shaped plate; 732. Guide wheel one; 733. Limiting rod one; 734. Connecting plate; 735. Limiting rod two; 736. Reinforcing rib. Detailed Implementation

[0034] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0035] It should be noted that these figures are simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0036] Reference Figure 1-6This utility model discloses an anti-deformation device for a large-diameter thin-walled tower body, comprising: a ground rail 1 and two cylinders 2. At least two electric traveling roller frames 3 are respectively provided at the bottom of each cylinder 2. The electric traveling roller frames 3 are all mounted on the ground rail 1. A cross-truss manipulator 4 is provided on one side of the ground rail 1. A welding robot 5 is mounted on one end of the cross-truss manipulator 4. Mounting brackets 60 are respectively connected to both ends of the electric traveling roller frames 3. Fixed arm devices 70 are respectively provided on the mounting brackets 60. It also includes a telescopic rod assembly 80 for driving the fixed arm devices 70 to swing. The mounting bracket 60 includes a side plate 61. An inclined plate 62 is symmetrically provided on the side of the side plate 61 away from the swing arm assembly 71. The inclined plates 62 are respectively connected to the electric traveling roller frames 3. The end connection of the fixed arm device 70 includes at least two swing arm assemblies 71. A plurality of connecting ribs 72 are connected between two adjacent swing arm assemblies 71. The top ends of the swing arm assemblies 71 are rotatably connected to limit wheel assemblies 73. The limit wheel assembly 73 includes V-shaped plates 731 rotatably connected to both sides of the swing arm assembly 71. The two ends of the V-shaped plates 731 are rotatably connected to guide wheels 732. Limit rods 733 are connected between the V-shaped plates 731. A connecting plate 734 is provided at the bottom of the closed end of the V-shaped plate 731. Limit rods 735 are installed between the connecting plates 734. The swing arm assemblies 71 are all located between the limit rods 733 and the limit rods 735. The device also includes reinforcing ribs 736 connected between the V-shaped plates 731.

[0037] The guide wheel 732 is a polyurethane-coated wheel. The ground rail 1 provides a fixed running track for the electric walking roller frame 3. The electric walking roller frame 3 supports the cylinder 2 and drives the cylinder 2 to move on the ground rail 1, facilitating the adjustment of the cylinder 2's position to meet the needs of assembly welding. The cross-shaped truss manipulator 4 moves flexibly in the horizontal and vertical directions, providing precise positioning and motion support for the welding robot 5. The welding robot 5 then performs welding operations on the cylinder 2 according to a preset program. The mounting bracket 60 ensures that the fixed arm device 70 can be firmly installed on the electric walking roller frame 3, moving with the cylinder 2 and maintaining a stable relative position with the cylinder 2, thereby effectively preventing deformation of the cylinder 2. During assembly welding, the fixed arm device 70 is driven to swing through the telescopic rod assembly 80, allowing the fixed arm device 70 to adjust according to the diameter and shape of the cylinder 2, thus better fitting the cylinder 2. On the surface, the cylinder 2 is fixed and supported. When the fixing arm device 70 is attached to the cylinder 2, the V-shaped plate 731 faces the cylinder wall, providing installation space for the guide wheel 732. The V-shaped structure achieves "two-point contact" with the cylinder wall, which is more stable than single-point contact. It can simultaneously limit the outward expansion of both sides of the cylinder wall, thereby preventing its top from being pressed down and shifted. When welding the next weld point, the guide wheel 732 can rotate with the cylinder wall to protect the appearance and structural integrity of the thin-walled cylinder 2. At the same time, the limiting rod 733 cooperates with the limiting rod 735 to limit the maximum opening angle of the V-shaped plate 731, avoiding deformation of the V-shaped plate 731 due to excessive constraint force, preventing the fixing arm device 70 from "excessively squeezing" the cylinder wall when applying constraint force, and avoiding plastic deformation of the cylinder 2 caused by external force. At the same time, it ensures that the relative position of the V-shaped plate 731 and the guide wheel 732 remains unchanged, ensuring that the constraint direction is always aligned with the radial direction of the cylinder wall, and improving the limiting accuracy.

[0038] The swing arm assembly 71 includes two swing plates 711, and several support rods 712 are connected between the swing plates 711. The mounting bracket 60 is symmetrically provided with L-shaped mounting plates 713. One end of the L-shaped mounting plate 713 is installed between the corresponding swing plates 711, and one end of the L-shaped mounting plate 713 is connected to the corresponding swing plate 711 through a pin.

[0039] The symmetrical design of the swing plate 711 can simultaneously constrain the limiting wheel assembly 73 from both sides, preventing the limiting wheel assembly 73 from tilting or shifting due to unilateral force, ensuring the fit between the guide wheel 732 and the cylinder wall, avoiding local deformation caused by uneven fit, and providing a stable force point for the drive of the telescopic rod assembly 80, ensuring that the swing arm assembly 71 swings at a uniform angle, and avoiding uneven constraint force caused by swing offset.

[0040] The telescopic rod assembly 80 includes a hinge seat 81 mounted on a mounting bracket 60. An electric push rod 82 is connected to the hinge seat 81 via a pin. The extended end of the electric push rod 82 is connected to a movable sleeve 83. A rotating rod 84 is rotatably connected inside the movable sleeve 83. Both ends of the rotating rod 84 are connected to the swing arm assembly 71.

[0041] A lifting mechanism 90 is provided on the electric traveling roller frame 3 below one of the opposite ends of the cylinder 2. The lifting mechanism 90 includes a double piston electric cylinder 91 on both sides of the electric traveling roller frame 3. The extended end of the double piston electric cylinder 91 is connected to a U-shaped plate 92. The inner side of the U-shaped plate 92 is rotatably connected to a guide wheel 93.

[0042] During the welding process of cylinder 2, the lifting mechanism 90 provides additional support and adjustment functions for cylinder 2. The electric traveling roller frame 3 is mainly responsible for the horizontal movement and rotation of cylinder 2, while the lifting mechanism 90 can operate cylinder 2 in the vertical direction. The two work together to achieve all-round control of the position and attitude of cylinder 2. The double piston electric cylinder 91 drives the U-shaped plate 92 to move upward, causing it to drive the guide wheel 93 to contact the surface of cylinder 2. During the lifting process, the guide wheel 93 can support cylinder 2, distribute the weight of cylinder 2, reduce the deformation caused by excessive local stress on cylinder 2, and provide auxiliary calibration during the assembly of cylinder 2. At the same time, when the electric traveling roller frame 3 drives cylinder 2 to rotate or move, the guide wheel 93 can rotate with the movement of cylinder 2, playing a guiding role and reducing friction, making the movement of cylinder 2 more stable and smooth.

[0043] The implementation principle of this embodiment is as follows: During use, the electric walking roller frame 3 drives the cylinder 2 to move on the ground rail 1, so that the two cylinders 2 approach each other and reach the initial assembly position. Then, the electric push rod 82 drives the swing arm assembly 71 to swing. According to the diameter and shape of the cylinder 2, the position of the fixed arm device 70 is adjusted so that the opening of the V-shaped plate 731 of the fixed arm device 70 moves towards the cylinder 2, and the guide wheel 732 is in contact with the cylinder wall. At this time, the V-shaped structure of the V-shaped plate 731 achieves two-point contact with the cylinder wall, and under the action of the electric push rod 82, it restricts the outward expansion of the two sides of the cylinder wall and prevents the top of the cylinder 2 from being pressed down and shifted. Then, the double piston electric cylinder 91 drives the U-shaped plate 92 to move upward, so that the guide wheel 93 contacts the surface of the cylinder 2. By controlling the extension of the dual-piston electric cylinder 91, the position of the cylinder 2 in the vertical direction is adjusted so that the axes of the two cylinders 2 are roughly aligned. Inside the cylinder 2, workers use spot welding to weld and fix the inner side, and rotate the cylinder 2 under the action of the electric walking roller frame 3 to perform assembly welding one by one. Meanwhile, the external cross truss robot 4 moves flexibly in the horizontal and vertical directions to adjust the position of the welding robot 5 and perform precise welding on the cylinder 2. Since the fixed arm device 70 always keeps the cylinder 2 fixed and supported, it prevents the cylinder 2 from deforming due to welding thermal stress and other factors. In addition, the guide wheel 732 can rotate with the cylinder wall to protect the appearance and structural integrity of the thin-walled cylinder 2, thereby improving the accuracy of the assembly welding of the cylinder 2.

[0044] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made using the content of this utility model specification, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A deformation prevention device for a large-diameter thin-walled tower shell, comprising: The system comprises a ground rail (1) and two cylindrical bodies (2), each of which has at least two electric walking roller frames (3) at its bottom. The electric walking roller frames (3) are all mounted on the ground rail (1). A cross-truss manipulator (4) is provided on one side of the ground rail (1). A welding robot (5) is installed at one end of the cross-truss manipulator (4). The system is characterized in that the two ends of the electric walking roller frames (3) are respectively connected to mounting brackets (60). The mounting brackets (60) are respectively provided with fixed arm devices (70) and also include a telescopic rod assembly (80) for driving the fixed arm devices (70) to swing. The fixed arm device (70) includes no less than two swing arm assemblies (71), and a number of connecting ribs (72) are connected between two adjacent swing arm assemblies (71). The top ends of the swing arm assemblies (71) are respectively rotatably connected to limit wheel assemblies (73). The limiting wheel assembly (73) includes V-shaped plates (731) rotatably connected to both sides of the swing arm assembly (71). Guide wheels (732) are rotatably connected to both ends of the V-shaped plates (731). Limiting rods (733) are connected between the V-shaped plates (731). A connecting plate (734) is provided at the bottom of the closed end of the V-shaped plate (731). Limiting rods (735) are installed between the connecting plates (734). The swing arm assembly (71) is located between the limiting rods (733) and the limiting rods (735). It also includes reinforcing ribs (736) connected between the V-shaped plates (731).

2. The anti-deformation device for a large-diameter thin-walled tower shell according to claim 1, characterized in that, The swing arm assembly (71) includes two swing plates (711), and several support rods (712) are connected between the swing plates (711). The mounting bracket (60) is symmetrically provided with L-shaped mounting plates (713). One end of the L-shaped mounting plate (713) is installed between the corresponding swing plates (711), and one end of the L-shaped mounting plate (713) is connected to the corresponding swing plate (711) through a pin.

3. The anti-deformation device for a large-diameter thin-walled tower shell according to claim 1, characterized in that, The telescopic rod assembly (80) includes a hinge seat (81) mounted on a mounting bracket (60). An electric push rod (82) is connected to the hinge seat (81) via a pin. The extended end of the electric push rod (82) is connected to a movable sleeve (83). A rotating rod (84) is rotatably connected inside the movable sleeve (83). Both ends of the rotating rod (84) are connected to the swing arm assembly (71).

4. The anti-deformation device for a large-diameter thin-walled tower shell according to claim 1, characterized in that, The cylinder (2) is provided with a lifting mechanism (90) on the electric walking roller frame (3) below one end facing each other. The lifting mechanism (90) includes a double piston electric cylinder (91) on both sides of the electric walking roller frame (3). The extended end of the double piston electric cylinder (91) is connected to a U-shaped plate (92). The inner side of the U-shaped plate (92) is rotatably connected to a guide wheel (93).

5. The anti-deformation device for a large-diameter thin-walled tower shell according to claim 1, characterized in that, The mounting bracket (60) includes a side plate (61), and the side plate (61) is symmetrically provided with inclined plates (62) on the side away from the swing arm assembly (71). The inclined plates (62) are respectively connected to the ends of the electric walking roller frame (3).

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