Tower flange flatness detection device

Abstract

The utility model discloses a kind of tower drum flange flatness detection device, the device relates to tower drum production inspection technical field;Including moving disc frame, first magnetic attraction pulley, laser receiver, laser transmitter, magnetic attraction base plate;The back of the moving disc frame is provided with the slot cooperating with flange face;First magnetic attraction pulley is movably arranged in the slot corresponding to the position of both sides of flange;The moving disc frame moves along the annular end surface of flange by first magnetic attraction pulley;The front of the moving disc frame is equipped with laser receiver;The bottom of the laser transmitter is fixed with magnetic attraction base plate;The magnetic attraction base plate and the flange plate end surface of tower drum are magnetically attracted and fixed;Laser transmitter emits light beam towards laser receiver;Through the device, the mode of present manual laser receiver transfer can be replaced, manual support is reduced, single person can complete measurement, improve measurement efficiency, reduce human factor to laser receiver point position interference.

Description

Technical Field

[0001] This utility model relates to the field of tower production and inspection technology, specifically to a tower flange flatness detection device. Background Technology

[0002] Ensuring the flatness of the flanges after welding is a crucial step in the manufacturing and installation of wind turbine towers, directly affecting the structural stability, installation accuracy, and long-term reliability of the turbine. Specifically, the impact of flange flatness on the tower is mainly reflected in the following four aspects: First, flange flatness directly affects the verticality of the tower. As the core structure supporting the wind turbine, the tower must be installed vertically with strict precision. If the flange flatness does not meet the standards, it will cause the tower to tilt, thus affecting the normal operation of the turbine. Tower tilting not only increases the vibration and load on the turbine during operation but may also lead to structural instability, and in severe cases, even turbine collapse. Second, flange flatness is crucial to connection strength. The various sections of the tower are connected by flanges and bolts. Insufficient flatness will lead to uneven stress on the bolts, reducing connection strength. In addition, flatness deviations can also cause local stress concentration, increasing the risk of fatigue damage and affecting the long-term durability of the tower. Third, good flange flatness can reduce installation difficulty. During installation, meeting the flatness standards can simplify the connection of tower sections, reduce adjustment time, and improve installation efficiency. Meanwhile, flatness also affects the sealing performance between flanges; deviations can lead to air or water leaks, impacting the safety of equipment inside the tower. Fourth, flange flatness directly affects the structural reliability of the tower. During long-term wind turbine operation, insufficient flatness accelerates fatigue at connection points, increasing maintenance costs and downtime. Good flatness helps the tower better withstand wind loads, improves wind resistance, and ensures stable operation of the wind turbine in harsh environments. Therefore, ensuring flange flatness is a basic requirement for compliance with industry standards and specifications. The wind power industry has strict technical standards for flange flatness to ensure that products meet design and safety requirements. Flatness is also a crucial quality control indicator, directly affecting product acceptance and delivery.

[0003] Currently, the measurement of the flatness of the flange after tower welding mainly relies on a laser level. Its working principle involves placing the laser level on the lower end face of the flange, with the operator collecting data using a handheld laser receiver via a lift. Because the flanges used in the wind power industry are large in size and require numerous measurement points, for L-shaped flanges, two points on the end face need to be measured—one on the inner side and one on the outer side—forming one set of data. Large flanges require nearly fifty measurement points and more than twenty sets of data. The measurement process for each flange typically takes about two hours. This measurement method relies on the operator's position adjustment, which involves moving the laser receiver along the flange end face. This not only introduces significant human interference but also consumes the operator's energy over a prolonged period, making it impossible for a single person to complete the measurement and impacting work efficiency. Utility Model Content: To address the shortcomings of existing technologies, this invention provides a tower flange flatness detection device. This device can replace the existing method of manually transferring the laser receiver, reducing manual support, allowing a single person to complete the measurement, improving measurement efficiency, and reducing human interference with the laser receiver position.

[0004] To achieve the above objectives, this utility model provides the following technical solution: A tower flange flatness testing device includes a movable frame, a first magnetic pulley, a laser receiver, a laser emitter, and a magnetic base. The movable frame has a groove on its back that mates with the flange face. The first magnetic pulley is movably positioned within the groove corresponding to both sides of the flange. The movable frame moves along the annular end face of the flange via the first magnetic pulley. A laser receiver is mounted on the front of the movable frame. The bottom of the laser emitter is fixed to the magnetic base. The magnetic base is magnetically fixed to the flange end face of the tower. The laser emitter emits a beam of light towards the laser receiver.

[0005] Preferably, the movable disc frame is a disc-shaped structure; the movable disc frame includes a first semi-circular frame and a second semi-circular frame; the first semi-circular frame and the second semi-circular frame are movably connected; a movable insert rod is fixed on the side of the first semi-circular frame that connects with the second semi-circular frame; an insertion hole is provided on the side of the second semi-circular frame corresponding to the movable insert rod; an adjusting screw is inserted through the side of the movable disc frame; the end of the adjusting screw is fixed to the first semi-circular frame; an adjusting disc is sleeved on the threaded end of the adjusting screw.

[0006] Preferably, a slider is fixed below the base of the laser receiver; a slide rail is fixed on the surface of the movable disk frame; the slider cooperates with the slide rail to move the laser receiver along the slide rail; a first knob is provided on one side of the slider.

[0007] Preferably, a guide rod is fixed on the base of the laser receiver; a guide plate is slidably mounted on the guide rod; the laser receiver is fixed on the guide plate, and a second knob is provided on one side of the guide plate.

[0008] Preferably, the movable tray is provided with a second magnetic pulley at the position corresponding to the flange end face; the second magnetic pulley is in contact with the flange end face.

[0009] The beneficial effects of this utility model are: The mobile tray moves along the flange via magnetic rollers, eliminating the need for manual movement of the points. The movement follows the flange's path, collecting a set of data with each movement. This eliminates the need for manual handling of the laser receiver, reducing operational complexity. Attached image description: To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art 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.

[0010] Figure 1 This is a schematic diagram of the overall positional relationship of this utility model.

[0011] Figure 2 This is a schematic diagram of the front connection relationship of the movable tray frame of this utility model.

[0012] Figure 3 This is a schematic diagram of the connection relationship on the back of the movable tray frame of this utility model.

[0013] In the figure, the movable plate frame 1, the first semicircular frame 1.1, the second semicircular frame 1.2, the movable insert rod 1.3, the adjusting screw 1.4, the adjusting plate 1.5, the first magnetic pulley 2, the laser receiver 3, the laser emitter 4, the magnetic base 5, the slide rail 6, the slider 7, the first knob 8, the guide rod 9, the guide plate 10, the second knob 11, the flange end face 12, and the second magnetic pulley 13. Detailed implementation method: like Figure 1-3 As shown, a tower flange flatness detection device includes a movable plate 1 with a groove on its back that mates with the flange face; first magnetic pulleys 2 are movably mounted in the groove corresponding to the two sides of the flange; the movable plate 1 moves along the annular end face of the flange via the first magnetic pulleys 2; furthermore, a second magnetic pulley 13 is mounted on the movable plate 1 corresponding to the flange end face; the second magnetic pulley 13 fits against the flange end face 12, enhancing the magnetic attraction effect and ensuring that the movable plate 1 moves along the flange end face. A laser receiver 3 is mounted on the front of the movable plate 1; a magnetic base 5 is fixed to the bottom of a laser emitter 4; the magnetic base 5 is magnetically fixed to the flange end face of the tower; the laser emitter 4 emits a beam of light toward the laser receiver 3. A slider 7 is fixed below the base of the laser receiver 3; a slide rail 6 is fixed to the surface of the movable plate 1; the slider 7 mates with the slide rail 6, allowing the laser receiver 3 to move along the slide rail 6; a first knob 8 is located on one side of the slider 7. Two points, one on the inside and one on the outside, need to be measured at each end face position. The laser receiver is switched between the inside and outside via the slide rail 6 to complete the data collection at both points.

[0014] like Figure 1-3As shown, the movable tray 1 has an overall disc-shaped structure. The movable tray 1 includes a first semi-circular frame 1.1 and a second semi-circular frame 1.2. The first semi-circular frame 1.1 and the second semi-circular frame 1.2 are movably connected. A movable insertion rod 1.3 is fixed to one side of the first semi-circular frame 1.1 that connects to the second semi-circular frame 1.2. An insertion hole is provided on one side of the second semi-circular frame 1.2 corresponding to the movable insertion rod 1.3. An adjusting screw 1.4 is inserted through the side of the movable tray 1. The end of the adjusting screw 1.4 is fixed to the first semi-circular frame 1.1. An adjusting disc 1.5 is fitted onto the threaded end of the adjusting screw 1.4. The adjusting disc 1.5 is used to adjust the distance between the first semi-circular frame 1.1 and the second semi-circular frame 1.2 to accommodate flanges within a certain specification range.

[0015] like Figure 1-3 As shown, the laser testing instrument comprises a laser emitter 4 and a laser receiver 3. The laser receiver 3 and the laser emitter 4 are rotatable. Even after the laser receiver 3 moves, it can still receive the beam signal through rotation; this is a fundamental function of the device. A guide rod 9 is fixed to the base of the laser receiver 3; a guide plate 10 slides on the guide rod 9; the laser receiver 3 is fixed to the guide plate 10, and a second knob 11 is located on one side of the guide plate 10. The second knob 11 is used to adjust the height of the flange end face 12 where the laser receiver 3 is located, ensuring that the laser receiver 3 and the laser emitter 4 are on the same plane. Unless otherwise described, the fixing methods are all achieved using welding or threaded fastening techniques commonly used by industry professionals.

[0016] The working principle is as follows: The operator directly fixes the laser emitter 4 to the flange end face, without changing the position of the laser emitter 4. The adjusting plate of the movable plate frame 1 is loosened, and the slot of the movable plate frame 1 mates with the flange end face. The first magnetic pulley 2 is located on both sides of the flange end face; the second magnetic pulley 13 is in frontal contact with the flange end face 12. After adjusting the position, the clamping degree of the first semi-circular frame 1.1 and the second semi-circular frame 1.2 can be adjusted by the adjusting plate 1.5 to facilitate fixing or displacing the movable plate frame 1. For each displacement, two points on the inner and outer sides of one position are measured. The number of test groups is selected according to the flange specifications. After collecting the data, the flatness of the flange is calculated. The above description is only a preferred embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the technical scope disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the protection scope of this utility model.

Claims

1. A tower flange flatness testing device, characterized in that: It includes a movable tray frame, a first magnetic pulley, a laser receiver, a laser emitter, and a magnetic base. The movable tray frame has a groove on its back that mates with a flange face. The first magnetic pulley is movably positioned within the groove corresponding to both sides of the flange. The movable tray frame moves along the annular end face of the flange via the first magnetic pulley. A laser receiver is mounted on the front of the movable tray frame. The bottom of the laser emitter is fixed to the magnetic base. The magnetic base is magnetically fixed to the flange end face of the tower. The laser emitter emits a beam of light towards the laser receiver.

2. The tower flange flatness testing device according to claim 1, characterized in that: The movable disc frame is generally disc-shaped; the movable disc frame includes a first semicircular frame and a second semicircular frame; the first semicircular frame and the second semicircular frame are movably connected; a movable insert rod is fixed on the side of the first semicircular frame that connects with the second semicircular frame; an insertion hole is provided on the side of the second semicircular frame corresponding to the movable insert rod; an adjusting screw is inserted through the side of the movable disc frame; the end of the adjusting screw is fixed to the first semicircular frame; an adjusting disc is sleeved on the threaded end of the adjusting screw.

3. The tower flange flatness testing device according to claim 1, characterized in that: A slider is fixed below the base of the laser receiver; a slide rail is fixed on the surface of the movable disk frame; the slider cooperates with the slide rail to move the laser receiver along the slide rail; a first knob is provided on one side of the slider.

4. The tower flange flatness testing device according to claim 3, characterized in that: A guide rod is fixed on the base of the laser receiver; a guide plate is slidably mounted on the guide rod; the laser receiver is fixed on the guide plate, and a second knob is provided on one side of the guide plate.

5. The tower flange flatness testing device according to claim 2, characterized in that: The movable tray is equipped with a second magnetic pulley at the position corresponding to the flange end face; the second magnetic pulley is in contact with the flange end face.

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