Equipment for measuring height of assembled blade

Abstract

The utility model discloses a device for measuring the height of an assembled blade, which comprises a workbench, a driving piece and an infrared height measuring instrument, and is characterized in that the workbench is provided with a fixing tool used for fixing the blade; the driving part is arranged on the workbench, is in driving connection with the fixing tool and is used for driving the fixing tool to rotate; and the infrared height measuring instrument is arranged on the workbench, and the infrared height measuring instrument is provided with an infrared probe and is used for detecting the axial height of the blade when the blade rotates. In the technical scheme, through the combination of the infrared height measuring instrument and the driving part, the blade is fixed on the tool and then is driven to rotate, so that the heights of the blade at different angles can be accurately measured, the infrared technology is not influenced by light rays, the measuring precision can be kept in various environments, and the reliability of measured data is improved.

Description

Technical Field

[0001] This utility model relates to the field of measuring equipment technology, specifically a device for measuring the height of assembled blades. Background Technology

[0002] The fan blades are one of the core components of a fan. Changes in the weight and height of the blades will affect the overall fan structure, leading to various problems. Changes in blade height directly affect the fan's airflow and pressure output. Inconsistent blade height will result in inconsistent airflow and pressure from different blades, affecting the stability of the fan's overall airflow and pressure output, and potentially even its efficiency and performance. Inconsistent blade height also affects the fan's vibration and noise. Uneven blade height leads to unbalanced rotation, increasing vibration and noise, and in severe cases, potentially affecting the fan's safe operation. Inconsistent blade height also impacts the fan's lifespan. Uneven blade height causes uneven stress on the blades, accelerating wear and aging, reducing the fan's lifespan, and increasing maintenance and replacement costs.

[0003] Maintaining consistent blade height is crucial for the normal operation and long-term stability of a wind turbine. During blade production and installation, strict control over the machining precision is necessary to ensure blade height consistency. During wind turbine operation and maintenance, regular blade height checks are also required, with timely adjustments and replacements of any mismatched blades to ensure the wind turbine's normal operation and safety.

[0004] The most common way for wind turbine manufacturers to measure blade height is by manually measuring the blades using a steel ruler (caliper). This method is simple, direct, and can quickly and accurately obtain blade height data, helping to ensure blade consistency. However, this method also has some drawbacks. First, since the blades are usually mounted on the frame, the actual measurement is of the blade assembly, not individual blades. There is a time lag between the preparation and assembly of assembled blades; if a blade is defective, it cannot be inspected in advance and will only be discovered during final assembly, easily causing production chaos and various unforeseen events, increasing operational complexity and time costs. Second, manually measuring blade and wind turbine height is time-consuming and labor-intensive, resulting in significant labor costs. Furthermore, subjective factors such as different people, operating methods, measurement techniques, and the level of employee responsibility can influence the measurement results, and standardization cannot guarantee this. Utility Model Content

[0005] The main purpose of this invention is to provide a device for measuring the height of assembled blades, aiming to solve the technical problem of how to conveniently and accurately measure the height of wind turbine blades before assembly.

[0006] To achieve the above objectives, this utility model proposes a device for measuring the height of assembled blades, comprising:

[0007] A workbench, on which a fixed fixture is provided for fixing the blade;

[0008] A driving component, disposed on the worktable, drives the fixed fixture for rotating; and...

[0009] An infrared height measuring instrument is installed on the workbench. The infrared height measuring instrument is equipped with an infrared probe for detecting the axial height of the blade when the blade rotates.

[0010] Optionally, a mounting plate is provided in the middle of the workbench, and the fixing fixture is disposed above the mounting plate.

[0011] Optionally, the drive component is positioned below the mounting plate and directly opposite the fixing fixture.

[0012] Optionally, the infrared height measuring instrument is connected to a magnetic base.

[0013] Optionally, the height of the infrared height measuring instrument relative to the magnetic base can be adjusted.

[0014] Optionally, the driving component is a motor.

[0015] Optionally, the workbench is provided with table legs underneath.

[0016] Optionally, a controller is provided below the worktable for controlling the operation of the drive components.

[0017] In the technical solution of this utility model, the blade is fixed on the tooling by a combination of an infrared height measuring instrument and a driving component, and then the blade is driven to rotate. This enables accurate measurement of the height of the blade at different angles. Infrared technology is not affected by light and can maintain measurement accuracy in various environments, thus improving the reliability of measurement data. Attached Figure Description

[0018] 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 the structures shown in these drawings without creative effort.

[0019] Figure 1 This is a perspective view of an embodiment of the device for measuring the height of assembled blades provided by this utility model;

[0020] Figure 2 yes Figure 1 The front view;

[0021] Figure 3 yes Figure 1 Partial structural diagram of the fixed tooling;

[0022] Figure 4 yes Figure 1 Partial structural diagram of a mid-infrared altitude measuring instrument.

[0023] Labeling Explanation: Equipment for measuring the height of assembled blades - 100, Workbench - 1, Mounting plate - 11, Table leg - 12, Fixture - 2, Clamping block - 21, Hinge - 22, Electromagnet - 23, Bearing seat - 3, Blade - 4, Outer edge - 41, Blade shank - 42, Infrared height measuring instrument - 5, Infrared probe - 51, Control component - 52, Micro motor - 53, Magnetic base - 54, Adjustment groove - 55, Adjustment block - 56, Rack - 561, Drive component - 6, Controller - 7.

[0024] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0025] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0026] To better describe and illustrate the embodiments of this application, reference may be made to one or more accompanying drawings, but the additional details or examples used to describe the drawings should not be considered as limiting the scope of any of the inventive creations of this application, the embodiments or preferred methods described herein.

[0027] In the description of this invention, it should be noted that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and do not indicate that the device referred to must have a specific orientation or operate in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

[0029] The most common way for wind turbine manufacturers to measure the height of wind turbine blades is by manually measuring the blades using a steel ruler (caliper). This method is simple and direct, but it actually measures the entire wind turbine assembly, not individual blades. Furthermore, manually measuring the blades and wind turbine blade height is time-consuming, labor-intensive, and incurs significant labor costs.

[0030] In view of this, the present invention provides a device for measuring the height of assembled blades. Figure 1 This is an embodiment of the device for measuring the height of assembled blades provided by this utility model. Please refer to [link / reference]. Figure 1-4 The equipment 100 includes a workbench 1, a drive unit 6, and an infrared height measuring instrument 5.

[0031] In this embodiment, a level is used to measure the levelness of the workbench 1, ensuring that the workbench 1 is horizontal relative to the ground. A horizontal mounting plate 11 is fixed to the center of the workbench 1. The mounting plate 11 is made of steel, which provides good flatness and is resistant to friction and impact, enabling it to withstand intense work conditions.

[0032] A fixing fixture 2 is mounted on the mounting plate 11 of the workbench 1 for fixing the blades 4. As is known in the prior art, the fan blades 4 are mounted on the impeller hub via their blade shanks 42. In this embodiment, to accurately fix the position of the blades 4, the fixing fixture 2 is designed with a structure similar to the impeller hub to simulate the rotation of the blades 4. The fixing fixture 2 has the same mounting groove as the impeller hub, and the blade shank 42 structure of the blades 4 can be fixedly engaged in this mounting groove. Specifically, the fixing fixture 2 includes two clamping blocks 21, which are hinged together by hinges 22. When the two clamping blocks 21 are pressed together, a mounting groove for engaging with the blade shank 42 of the blades 4 is formed inside. Please refer to [link to relevant documentation]. Figure 3 In this embodiment, an electromagnet is used, with electromagnets 23 installed on both clamping blocks 21 to attract the two clamping blocks 21 together. Of course, the implementation of this utility model is not limited to this. The two clamping blocks 21 can also be clamped together by bolts and nuts, and the blade stalk 42 can be clamped by setting fixing holes in the clamping blocks 21.

[0033] In addition, a bearing seat 3 is fixedly mounted on the mounting plate 11 by bolts. The fixing fixture 2 is connected to the bearing seat 3 and can rotate relative to the bearing seat 3, thereby enabling the blade 4 on the fixing fixture 2 to rotate horizontally on the worktable 1.

[0034] Please see Figure 2 The drive unit 6 is installed below the worktable 1 and fixed to the mounting plate 11 by bolts. Its output end drives the fixed fixture 2, enabling it to rotate the fixed fixture 2 and its connected blades 4. It should be noted that there are various driving and connection methods for the drive unit 6. As a preferred embodiment, the drive unit 6 is a motor, and the motor shaft is connected to the fixed fixture 2.

[0035] This motor plays a crucial role in the semi-automatic device 100 for measuring the height of assembled blades 4. It provides rotational power, enhances measurement flexibility, enables automated operation, achieves precise control, and adapts to blades 4 of different sizes and shapes. These functions together ensure that the device 100 can efficiently and accurately complete the blade 4 height measurement task.

[0036] Please see Figure 1 An infrared height measuring instrument 5 is installed on the workbench 1. The infrared height measuring instrument 5 includes an infrared probe 51 located at the top and a control component 52 located above the infrared probe 51. The control component 52 can control the opening and closing of the infrared probe 51, receive and transmit data measured by the infrared height measuring instrument 5, and adjust the power of the infrared probe 51, etc. The height of the blade 4 is the difference between the vertical height of its outer edge 41. The measurement method is generally to place the infrared probe 51 directly above the outer edge 41 of the blade 4 (the outer edge extends roughly circumferentially). When the blade 4 rotates at least once on the workbench 1, the infrared probe 51 emits infrared light that illuminates the outer edge 41 of the blade 4 and receives the infrared light reflected from the outer edge 41 of the blade 4. The control component 52 detects and analyzes the data to determine the longest distance L between the outer edge 41 and the infrared probe 51. max and the shortest distance L min After the control component 52 outputs data to the staff or an external host, it performs a simple calculation of L. max -L min This gives us the axial height H of blade 4.

[0037] According to common knowledge, the principle of distance L calculation is the time difference of flight (TOF). The distance L is obtained by multiplying the round-trip time difference t of the signal by the speed of light c and then dividing by 2.

[0038] In this embodiment, the infrared height measuring instrument 5 is a commercially available infrared rangefinder, whose minimum measuring distance is typically 10cm. This distance facilitates the positioning of the measuring instrument 5 above the blade 4. For example, the effective measuring distance range of the GP2D12 infrared distance sensor is typically 10cm to 80cm.

[0039] The infrared height measuring instrument 5 also includes a magnetic base 54, on which the various electrical components of the measuring instrument 5 are fixedly mounted. The bottom of the magnetic base 54 is horizontal and is made of magnets. Its strong magnetic attraction allows the measuring instrument 5 to be stably placed on the steel mounting plate 11, ensuring that the infrared rays it emits are vertical.

[0040] The magnetic base 54 allows the infrared height measuring instrument 5 to be stably placed on the horizontal worktable 1, while facilitating rapid movement and repositioning as needed. This not only improves measurement stability but also greatly simplifies the installation and commissioning process of the device 100. The device 100 combines the advantages of automation and manual operation, retaining the possibility of human intervention to improve measurement flexibility and accuracy while reducing the operator's workload and improving work efficiency through automation. Due to its high precision and flexibility, this semi-automatic device 100 is not only suitable for measuring the height of the blade 4 but can also be extended to the dimensional measurement of other similar objects, such as mechanical parts and workpieces, thus broadening its application range.

[0041] Please see Figure 4 The infrared height measuring instrument 5 includes a micro motor 53 and a vertically arranged height adjustment slot 55. The height adjustment slot 55 is located on the side of the micro motor 53, and a gear (not shown in the figure) is rotatably mounted inside the height adjustment slot 55, driven by the micro motor 53. An adjustment block 56 is fixedly connected to the infrared probe 51 of the infrared height measuring instrument 5, and a rack 561 is provided on the adjustment block 56. The adjustment block 56 is slidably mounted in the height adjustment slot 55, and its rack 561 meshes with the gear in the height adjustment slot 55. The micro motor 53 drives the gear to rotate, which in turn drives the rack to move up and down, thereby moving the infrared probe 51 up and down and adjusting the height of the infrared probe 51. This allows the measuring instrument 5 to provide high-precision height measurement for different types of blades 4. Preferably, the micro motor 53 includes a drive box, and the adjustment gear on the drive box can precisely drive the micro motor 53 to work, thereby precisely adjusting the height of the infrared probe 51.

[0042] It should be understood that infrared technology, with its non-contact, rapid response, and high precision, is well-suited for automated measurement systems. The height adjustment slot 55 equipped in the device 100 allows the infrared height measuring instrument 5 to be precisely adjusted as needed. This design adapts to the measurement requirements of blades 4 of different sizes and shapes, increasing the versatility and flexibility of the device 100.

[0043] In this embodiment, table legs 12 are provided under the workbench 1. The main functions of the table legs 12 are to provide support and stability, height adjustment and adaptability, floor protection and anti-slip properties, safety, and aesthetics and decoration. These functions together ensure the stability, safety and practicality of the workbench 1, providing users with a more comfortable and convenient user experience.

[0044] A controller 7 is also installed below the workbench 1. In this embodiment, the controller 7 is equipped with a PLC and a switching power supply. The PLC is responsible for the overall control and data processing of the drive unit 6, while the switching power supply is responsible for the power-on / off control and safety protection of the electromagnet 23 in the clamp block 21. The coordinated work of these two components ensures the normal operation and efficient operation of the equipment 100. It should be understood that the PLC is used to control the speed, forward and reverse rotation, etc. of the motor drive unit 6, which is common knowledge. For example, controlling the forward and reverse rotation of the motor, that is, the motor can rotate clockwise and counterclockwise, is achieved by the PLC changing the direction of the current in its internal coil; for example, controlling the motor speed is achieved by the PLC adjusting the frequency or pulse width of the output signal to control the operating parameters of the frequency converter or driver, thereby realizing speed adjustment.

[0045] In a preferred embodiment, the PLC is also connected to the control component 52 of the infrared height measuring instrument. The PLC can analyze, store, or output data to an external device 100 (such as a computer or monitor) according to a preset program. The operator can view the measurement results through the external device 100 and perform subsequent data analysis or processing.

[0046] When this equipment is in operation, the operating steps are as follows:

[0047] First, place the device 100 securely in the work area using the table legs 12. The operator should ensure that all components (such as the infrared height measuring instrument 5) are correctly installed and calibrated, plug in the power, and turn on the main switch.

[0048] The blade 4 to be measured is placed on the mounting plate 11 and the fixing fixture 2 is made secure. The blade 4 fixing fixture 2 has a specific clamping or positioning mechanism to ensure the stability of the blade 4 during the measurement process.

[0049] The switching power supply controls the operation of the electromagnet 23, and the two clamping blocks 21 clamp the blade 4's stalk 42.

[0050] The infrared height measuring instrument 5 emits infrared rays to the outer edge 41 of the blade 4 through the infrared probe 51. When the infrared rays encounter the surface of the blade 4, they are reflected back and received by the infrared probe 51. By measuring the time difference or phase difference between the infrared emission and reception, the infrared height measuring instrument 5 can accurately calculate the height of the blade 4. (If it is necessary to measure different angles of the blade 4, the PLC can control the motor to drive the fixed operation and the blade 4 to rotate, which will accurately rotate the blade 4 to the specified angle.)

[0051] At each angle, the infrared height measuring instrument 5 will measure the height, and the measured height data will be transmitted to the PLC for processing.

[0052] After the measurement is completed, the power supply will automatically turn off, stopping the operation of the equipment 100. If any abnormal situation occurs during the measurement process (such as power fluctuations, equipment 100 failure, etc.), the protection device in the controller 7 will immediately cut off the power supply to protect the safety of the equipment 100 and the operator.

[0053] In summary, the device 100 for measuring the height of assembled blades 4, through the infrared height measuring instrument 5, can achieve accurate measurement of the height of blades 4. Infrared technology is unaffected by light, maintaining measurement accuracy in various environments and improving the reliability of measurement data. The infrared height measuring instrument 5, through its height adjustment slot 55, can be easily adjusted to accommodate blades 4 of different sizes, increasing the flexibility and adaptability of the device 100, enabling it to handle a wider variety of blades 4.

[0054] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0055] The above embodiments merely illustrate several implementation methods of this application, and their descriptions are relatively specific and detailed. However, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A device for measuring the height of assembled blades, characterized in that, include: A workbench, on which a fixed fixture is provided for fixing the blade; A driving component, disposed on the worktable, drives the fixed fixture for rotating; and... An infrared height measuring instrument is installed on the workbench. The infrared height measuring instrument is equipped with an infrared probe for detecting the axial height of the blade when the blade rotates.

2. The device for measuring the height of assembled blades as described in claim 1, characterized in that, A mounting plate is provided in the middle of the workbench, and the fixing fixture is located above the mounting plate.

3. The device for measuring the height of assembled blades as described in claim 2, characterized in that, The drive component is positioned below the mounting plate and directly opposite the fixing fixture.

4. The device for measuring the height of assembled blades as described in claim 1, characterized in that, The infrared altitude measuring instrument is connected to a magnetic base.

5. The device for measuring the height of assembled blades as described in claim 4, characterized in that, The height of the infrared height measuring instrument relative to the magnetic base is adjustable.

6. The device for measuring the height of assembled blades as described in claim 1, characterized in that, The driving component is a motor.

7. The device for measuring the height of assembled blades as described in claim 1, characterized in that, The workbench is equipped with table legs underneath.

8. The device for measuring the height of assembled blades as described in claim 1, characterized in that, A controller is installed below the workbench to control the operation of the drive components.

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