Diameter measuring device for wind power tower drum

Abstract

The utility model discloses a device for measuring the diameter of a wind power tower. The device comprises a steering wheel mechanism, a mounting plate, a sliding rail, a sliding block, a limiting piece, a connecting rod, an adjustable connecting piece, a mounting seat, a pulley and an encoder, a horizontally-arranged mounting plate is fixed to the top end of an inner ring of a slewing bearing of the steering wheel mechanism, sliding rails are fixed to the bottom ends of the two sides of the mounting plate respectively, sliding blocks are arranged at the two ends in the sliding rails respectively in a sliding mode, limiting pieces are arranged between the sliding rails and the sliding blocks, connecting rods are hinged to the bottom ends of the sliding blocks, and adjustable connecting pieces are connected between the sliding blocks and the connecting rods. The bottom end of the connecting rod is rotationally connected with a mounting seat, the mounting seat is perpendicular to the connecting rod, a pulley is arranged in the mounting seat, rotating shafts are fixed to the two sides of the pulley and rotationally connected with the mounting seat, and the rotating direction of the pulley is perpendicular to the rotating direction of a driving wheel of the steering wheel mechanism; a circumferential ring groove is formed in the wheel surface of a driving wheel of the steering wheel mechanism; an encoder is fixed to the outer wall of the mounting base, and the input end of the encoder is fixedly connected with the rotating shaft.

Description

Technical Field

[0001] This utility model relates to the field of wind turbine tower technology, and specifically to a wind turbine tower diameter measuring device. Background Technology

[0002] In recent years, wind power technology has made significant progress. The single-unit capacity of wind turbines has been continuously increasing, and the power generation efficiency and reliability have been continuously improving. At the same time, with the maturity of the technology and its large-scale development, the cost of wind power generation has gradually decreased, making it more economically competitive. Compared with traditional energy power generation, the cost of wind power generation has become increasingly close to, and in some regions even lower than, the cost of traditional thermal power. This has further promoted the large-scale application and market promotion of wind power technology.

[0003] Measuring the diameter of wind turbine towers is a crucial step in wind turbine manufacturing and testing. Common methods include direct measurement with a measuring tape or using a laser rangefinder. When using a measuring tape, the tape is wrapped around the tower to measure the circumference, and the diameter is calculated using a circumference formula. However, this method can introduce errors when the tower diameter is large due to factors such as tape stretching, bending, and manual operation. Laser rangefinders offer a more precise direct measurement tool. They measure the tower diameter by emitting a laser beam from one side of the tower and receiving the reflected light on the other side. However, they are costly, require professional operation, and are suitable for applications demanding high accuracy in tower diameter measurement. Utility Model Content

[0004] The purpose of this invention is to provide a device for measuring the diameter of wind turbine towers.

[0005] This utility model is implemented by the following technical solution: a wind turbine tower diameter measuring device, which includes a steering wheel mechanism, a mounting plate, a slide rail, a slider, a limiting component, a connecting rod, an adjustable connecting component, a mounting base, a pulley, and an encoder;

[0006] The top of the inner ring of the slewing bearing of the steering wheel mechanism is fixed with a horizontally arranged mounting plate. The bottom ends of both sides of the mounting plate are respectively fixed with slide rails. The slide rails are slidably provided at both ends. A limiting member is provided between the slide rails and the slide rails. The bottom end of the slide rails is hinged with a connecting rod. An adjustable connecting member is connected between the slide rails and the connecting rod. The bottom end of the connecting rod is rotatably connected with a mounting base. The mounting base is perpendicular to the connecting rod. The mounting base is provided with a pulley. Rotating shafts are fixed on both sides of the pulley. The rotating shafts are rotatably connected to the mounting base. The rotation direction of the pulley is perpendicular to the rotation direction of the drive wheel of the steering wheel mechanism.

[0007] The drive wheel of the steering wheel mechanism has a circumferential groove on its surface;

[0008] The encoder is fixed to the outer wall of the mounting base, and the input end of the encoder is fixedly connected to the rotating shaft.

[0009] Furthermore, the opening of the circumferential annular groove is inverted V-shaped, matching the bevel shape of the tower.

[0010] Furthermore, the limiting component includes a positioning bolt, and the outer walls on both sides of the slide rail are provided with a plurality of first positioning holes arranged along its length direction. The slider is provided with a second positioning hole, and the positioning bolt is screwed between the first positioning hole and the second positioning hole.

[0011] Furthermore, the adjustable connector includes a reverse threaded screw, a straight threaded screw, and a connecting sleeve. The two ends of the connecting sleeve are respectively screwed to the reverse threaded screw and the straight threaded screw. The other end of the reverse threaded screw is hinged to the slider, and the straight threaded screw is hinged to the connecting rod.

[0012] Furthermore, the pulley is a magnetic wheel.

[0013] Furthermore, it also includes a PLC controller, the input terminal of which is communicatively connected to the output terminal of the encoder.

[0014] The advantages of this utility model are: by cooperating with the circumferential groove on the surface of the drive wheel and the pulleys on both sides of the rudder wheel mechanism, the rudder wheel mechanism can move along the bevel of the tower. With the cooperation of the connecting rod and the pulleys, the device can move stably along the bevel of the tower, which specifically assists and supports the rudder wheel mechanism.

[0015] With the cooperation of slide rail, slider, adjustable connector, connecting rod, limiting component and pulley, the distance between a group of pulleys on the same slide rail can be adjusted to meet the requirements of towers of different diameters. By adjusting the length of the adjustable connector, a tight fit with the tower wall is ensured under the action of the magnetic wheel, and it can be adjusted according to the wall thickness of the tower.

[0016] By using an encoder, pulleys, and a PLC controller, the circumference of the inner and outer walls of the tower is measured based on the number of pulses corresponding to the sliding path of the pulleys. Attached Figure Description

[0017] 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.

[0018] Figure 1This is a perspective view of the utility model;

[0019] Figure 2 This is a schematic diagram of the steering wheel mechanism in this utility model;

[0020] Figure 3 This is a schematic diagram of the utility model in use;

[0021] In the diagram: 1. Steering wheel mechanism, 1.1. Drive wheel, 1.2. Inner ring of slewing bearing, 3. Circumferential groove, 5. Mounting plate, 6. Slide rail, 7. Slider, 8. Limiting component, 8.1. Positioning bolt, 10. First positioning hole, 11. Second positioning hole, 12. Connecting rod, 13. Adjustable connecting component, 13.1. Reverse thread screw, 13.2. Connecting sleeve, 13.3. Mounting base, 14. Pulley, 15. Rotating shaft, 16. Encoder, 17. PLC controller, 18. Tower, 19. Detailed Implementation

[0022] 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.

[0023] like Figure 1-3 As shown, the wind turbine tower diameter measuring device includes a steering wheel mechanism 1, a mounting plate 5, a slide rail 6, a slider 7, a limiting component 8, a connecting rod 12, an adjustable connecting component 13, a mounting base 14, a pulley 15, and an encoder 17.

[0024] The steering wheel mechanism 1 is an existing AGV steering wheel. The steering wheel is an integrated mechanical structure that combines a drive motor, a steering motor, and a reducer. For specific details, refer to existing patent CN109050244B - A High-Precision AGV Drive and Steering Integrated Device and Its Control Method. Specifically, it includes a drive module and an independent steering module. The drive module includes a walking motor, a drive wheel, and a rotary transformer. The integrated device also includes a transmission module, which includes a support base and a two-stage reduction mechanism. The two-stage reduction mechanism includes a large transmission gear and a gear shaft. The gear shaft is rotatably mounted in the support base, and the large transmission gear is fixedly mounted on the gear shaft. The gear shaft has external teeth that mesh with the internal gear ring of the drive wheel. A small transmission gear is mounted on the output shaft of the drive motor, meshing with the large transmission gear. The independent steering module is mounted on the support base. The independent steering module includes a support plate, a slewing support bearing, a steering motor, a reducer, and a steering gear. The support plate is fixed to a support base. The slewing support bearing includes an inner ring and an outer ring. The inner ring is fixedly connected to the support plate, and the outer ring has a gear fixed to the AGV frame. The steering motor is in an inverted position, with its output shaft parallel to the reducer's input shaft. The motor's output shaft and the reducer's input shaft are connected by a sprocket and a belt. The angle reducer is fixed below the support plate, and its output shaft passes through the support plate and is coaxially mounted with the steering gear. The steering gear meshes with the outer ring gear of the slewing support bearing. An absolute encoder is mounted on the steering motor's shaft. The travel motor is a brushless servo motor, and a rotary transformer is used as the speed feedback sensor for the travel motor. The steering wheel mechanism has a corresponding control system, which can be used to control the trajectory and speed of the steering wheel.

[0025] The drive wheel 1.1 of the steering wheel mechanism 1 has a circumferential groove 3 on its wheel surface. The groove opening of the circumferential groove 3 is inverted V-shaped, which matches the bevel shape of the tower 19. The drive wheel 1.1 of the steering wheel mechanism 1 moves along the bevel of the tower 19. The circumferential groove 3 and the bevel of the tower 19 cooperate to limit the drive wheel 1.1.

[0026] A horizontally mounted mounting plate 5 is fixed to the top of the inner ring 1.2 of the slewing bearing of the steering wheel mechanism 1. Slide rails 6 are fixed to the bottom of both sides of the mounting plate 5. Slider blocks 7 are slidably mounted at both ends of the slide rails 6. A limiting member 8 is provided between the slide rails 6 and the sliders 7. The limiting member 8 includes a positioning bolt 8.1. Several first positioning holes 10 are provided on the outer walls of both sides of the slide rails 6 along their length direction. Second positioning holes 11 are provided on the sliders 7. The positioning bolt 8.1 is screwed between the first positioning holes 10 and the second positioning holes 11. According to the wall thickness of the tower 19, the distance between the two pulleys 15 arranged opposite each other can be adjusted by the cooperation of the slide rails 6 and the sliders 7.

[0027] A connecting rod 12 is hinged to the bottom end of the slider 7. An adjustable connector 13 connects the slider 7 and the connecting rod 12. Under the action of the adjustable connector 13, the pulley 15 and the wall of the tower 19 are tightly fitted. A mounting base 14 is rotatably connected to the bottom end of the connecting rod 12. The mounting base 14 is perpendicular to the connecting rod 12. The adjustable connector 13 includes a reverse threaded screw 13.1, a straight threaded screw 13.2, and a connecting sleeve 13.3. The two ends of the connecting sleeve 13.3 are screwed to the reverse threaded screw 13.1 and the straight threaded screw 13.2, respectively. The other end of the reverse threaded screw 13.1 is hinged to the slider 7. The straight threaded screw 13.2 is connected to the connecting rod 12. 2. The adjustable connector 13 is adjusted by rotating the connecting sleeve 13.3. The mounting base 14 is equipped with a pulley 15, which is a magnetic wheel. The pulley 15 has a rotating shaft 16 fixed on both sides. The rotating shaft 16 is rotatably connected to the mounting base 14. The rotation direction of the pulley 15 is perpendicular to the rotation direction of the drive wheel 1.1 of the rudder wheel mechanism 1. Under the action of the magnetic wheel, it ensures a tight fit with the wall of the tower 19, ensuring that the device moves stably along the bevel of the tower 19, and specifically assists in supporting the rudder wheel mechanism. At the same time, the movement direction of the pulley 15 is consistent with the circumferential direction of the tower 19, which solves the problem of the device accidentally falling.

[0028] An encoder 17 is fixed to the outer wall of the mounting base 14. The input end of the encoder 17 is fixedly connected to the rotating shaft 16. A PLC controller 18 is also included. The input end of the PLC controller 18 is communicatively connected to the output end of the encoder 17. Under the action of the pulley 15 and the encoder 17, the distance corresponding to one pulse can be obtained according to the number of pulses corresponding to the circumference of the pulley 15. The length corresponding to the number of pulses generated around the tower cylinder 19 can be obtained through the high-speed counter built into the PLC controller 18. The circumference of the inner wall and the circumference of the outer wall can be obtained as appropriate.

[0029] The specific operation process of this embodiment is as follows:

[0030] Place the drive wheel 1.1 of the steering wheel mechanism 1 at the bevel of the tower 19. Adjust the position of the slider 7 in the slide rail 6 according to the wall thickness of the tower 19, and fix the slider 7 in the slide rail 6 using the positioning bolt 8.1. Then, adjust the adjustable connector 13 so that the pulleys 15 on the inner and outer sides of the tower 19 contact the inner and outer walls of the tower 19 respectively.

[0031] Then, the steering wheel mechanism 1 is activated, and the control system of the steering wheel mechanism 1 drives the wheel 1.1 to move along the bevel of the tower 19, while the steering wheel mechanism 1 is assisted in moving with the help of the pulley 15.

[0032] The pulley 15 is always in contact with the wall of the tower 19. After it has traveled a full circle along the outer edge of the tower 19, the circumference of the tower 19 is calculated based on the number of pulses output by the encoder 17.

[0033] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A wind turbine tower diameter measuring device, characterized in that, It includes a steering wheel mechanism, mounting plate, slide rail, slider, limit component, connecting rod, adjustable connector, mounting base, pulley, and encoder; The top of the inner ring of the slewing bearing of the steering wheel mechanism is fixed with a horizontally arranged mounting plate. The bottom ends of both sides of the mounting plate are respectively fixed with slide rails. The slide rails are slidably provided at both ends. A limiting member is provided between the slide rails and the slide rails. The bottom end of the slide rails is hinged with a connecting rod. An adjustable connecting member is connected between the slide rails and the connecting rod. The bottom end of the connecting rod is rotatably connected with a mounting base. The mounting base is perpendicular to the connecting rod. The mounting base is provided with a pulley. Rotating shafts are fixed on both sides of the pulley. The rotating shafts are rotatably connected to the mounting base. The rotation direction of the pulley is perpendicular to the rotation direction of the drive wheel of the steering wheel mechanism. The drive wheel of the steering wheel mechanism has a circumferential groove on its surface; The encoder is fixed to the outer wall of the mounting base, and the input end of the encoder is fixedly connected to the rotating shaft.

2. The wind turbine tower diameter measuring device according to claim 1, characterized in that, The opening of the circumferential annular groove is inverted V-shaped, matching the bevel shape of the tower.

3. The wind turbine tower diameter measuring device according to claim 1, characterized in that, The limiting component includes a positioning bolt. The outer walls on both sides of the slide rail are provided with a plurality of first positioning holes arranged along its length. The slider is provided with a second positioning hole. The positioning bolt is screwed between the first positioning hole and the second positioning hole.

4. The wind turbine tower diameter measuring device according to claim 1, characterized in that, The adjustable connector includes a reverse threaded screw, a straight threaded screw, and a connecting sleeve. The two ends of the connecting sleeve are respectively screwed to the reverse threaded screw and the straight threaded screw. The other end of the reverse threaded screw is hinged to the slider, and the straight threaded screw is hinged to the connecting rod.

5. The wind turbine tower diameter measuring device according to claim 1, characterized in that, The pulley is a magnetic pulley.

6. The wind turbine tower diameter measuring device according to claim 1, characterized in that, It also includes a PLC controller, the input terminal of which is communicatively connected to the output terminal of the encoder.

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