A device for detecting end face precision of wind power flange production

Abstract

This invention relates to the field of flange inspection technology and discloses a device for testing the end face accuracy of wind turbine flanges. The device includes a laser emitter, a laser receiver, and a display unit. The laser receiver has a receiver and a base structure, and the base structure can be adsorbed and fixed onto the flange end face. It also includes a cleaning component mounted on the base structure. The cleaning component has a jet nozzle capable of ejecting high-speed airflow, and the jet nozzle can clean the contact area between the base structure and the flange end face. This invention integrates a sliding fit design between a telescopic part and an electromagnet in the base structure. Before the electromagnet is adsorbed and fixed, the ventilation gap formed by the contact between the telescopic part and the flange end face serves as a cleaning channel. Combined with the high-speed airflow generated by the booster cylinder, the contact area between the electromagnet and the flange is simultaneously cleaned by jet cleaning. This achieves the effect of automatically completing the contact surface cleaning during the receiver fixing process, eliminating the need for additional steps, and avoiding impurities affecting measurement accuracy.

Description

Technical Field

[0001] This invention relates to the field of flange inspection technology, specifically to a device for testing the end face accuracy of wind turbine flanges. Background Technology

[0002] Wind turbine flanges are key connecting components in wind turbine systems, mainly used to connect wind turbines, pipelines, and towers to ensure stability. Among them, the flatness of the flange mating surface is one of the most critical indicators of end face accuracy during the production process of wind turbine flanges. It directly determines whether the two flanges can evenly convert the bolt preload into sealing pressure. Therefore, the flatness inspection of the flange end face is an important part of the production process.

[0003] In existing technologies, the testing instruments used for flatness testing of large flanges such as wind turbine flanges are mostly laser leveling instruments, which mainly include a laser transmitter (responsible for generating a rotating laser beam to generate a reference plane), a laser receiver (receiving laser signals and converting them into electrical signals to achieve three-dimensional data acquisition), and a display unit (integrating data processing and display functions).

[0004] Currently, during the testing process, the laser receiver is fixed to the flange end face by adsorption using its bottom electromagnet base. After it stabilizes and receives signals, it is manually moved to collect the next position information. However, during the workshop processing, there may be some waste or other impurities on the flange end face. This may cause impurities to be trapped when the electromagnet base is adsorbed and fixed to the flange end face, creating a gap between the electromagnet base and the flange end face. This will cause the position of the laser receiver to deviate, thus affecting the accuracy of the test data. Summary of the Invention

[0005] The purpose of this invention is to provide an end-face accuracy testing device for wind power flange production, so as to solve at least one technical problem existing in the prior art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an end face precision testing device for wind power flange production, comprising a matching laser emitter, a laser receiver, and a display unit, wherein the laser receiver has a receiver and a base structure, and the base structure can be adsorbed and fixed on the flange end face; It also includes a cleaning component mounted on the base structure, the cleaning component having a jet section capable of ejecting high-speed airflow, and the jet section capable of jet cleaning the contact area between the base structure and the flange end face.

[0007] Optionally, the base structure includes a base, the bottom surface of which is a cavity, and an electromagnet is slidably installed in the cavity. The top surface of the base has a vertical groove, and a connecting block is slidably installed in the vertical groove. The receiver is installed on the guide rod of the connecting block. The interior of the vertical groove has a through hole communicating with the cavity. The bottom extension rod of the connecting block passes through the through hole into the cavity and is fixedly connected to the electromagnet. A tension spring is installed between the electromagnet and the inner top of the cavity. The base structure also includes a telescopic part that is slidably installed in the cavity and can elastically extend and retract, and the bottom plane of the telescopic part always extends beyond the bottom plane of the base.

[0008] Optionally, a contact switch capable of controlling the start and stop of the electromagnet by an electrical signal is installed on the inner wall of the cavity of the telescopic part.

[0009] Optionally, the cleaning component includes a sleeve hole opened inside the telescopic part, the jet part is a jet groove opened near the bottom side wall of the telescopic part, and the jet groove communicates with the sleeve hole. A pressure boosting cylinder inserted into the sleeve hole is fixed at the bottom of the cavity. A switch is provided at the bottom of the pressure boosting cylinder. When the telescopic part is pressed back into the cavity by a distance exceeding a preset range, the switch opens and connects the pressure boosting cylinder and the sleeve hole. The cleaning assembly also includes an inflation section for maintaining a high pressure inside the booster cylinder.

[0010] Optionally, the switching element includes an exhaust port at the bottom of the booster cylinder, and an air-blocking component is slidably mounted on the inner wall of the booster cylinder via a bracket. The air-blocking component has a baffle with a diameter larger than that of the exhaust port, and a compression spring is installed between the baffle and the bracket. A top pin extending into the sleeve hole is also installed at the inner bottom of the jet groove.

[0011] Optionally, the end face accuracy detection device further includes a positioning rotating frame, which includes a rotating telescopic rod capable of intermittently rotating about the flange axis. The telescopic end of the rotating telescopic rod is fixed with a sleeve frame fitted around the base. The sleeve frame is a regular polygonal design, with a rotating shaft rotatably installed inside each side segment. Adjacent rotating shafts are driven by bevel gear meshing. A servo motor for driving one of the rotating shafts is installed on the outer wall of the sleeve frame. A clamping cam is rotatably installed in the middle of each side segment. The clamping cam is fixedly connected to the corresponding rotating shaft by a connector. The outer wall of the side segment has a through groove for the connector to pass through and move.

[0012] Optionally, the inflation part includes an air chamber opened inside the side section of the sleeve, and the axis of the rotating shaft coincides with the axis of the spiral groove. A piston block is slidably installed on the outer wall of the rotating shaft. The piston block and the inner wall of the air chamber are sealed and slidably designed. The inner wall of the air chamber is provided with a spiral groove. A sliding pin is fixed on the outer wall of the piston block and extends into and is slidably installed in the spiral groove. The outer wall of the sleeve is connected to an air pipe that supplies air from the air chamber to the booster cylinder in one direction. The outer wall of the sleeve is also provided with an air intake port that allows air to enter in one direction.

[0013] Optionally, the positioning rotating frame further includes a central column, and the rotating telescopic rod is rotatably mounted on the outer wall of the central column. Multiple support frames are evenly distributed around the outer wall of the central column, and each of the multiple support frames is equipped with a sliding adjustable limit slider.

[0014] Optionally, the telescopic part is configured as a C-shaped semi-enclosed structure, and the inner wall of the telescopic part is slidably connected to the electromagnet, and the bottom surface of the telescopic part is also provided with a receiving groove.

[0015] Optionally, the opening of the jet channel is flat, and the internal corner of the jet channel is a rounded transition surface.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: I. This invention integrates a sliding fit design between a telescopic section and an electromagnet within the base structure. Before the electromagnet is attracted and fixed, the ventilation gap formed by the contact between the telescopic section and the flange end face serves as a cleaning channel. Combined with the high-speed airflow generated by the booster cylinder, the contact area between the electromagnet and the flange is simultaneously cleaned by air jets. This achieves the effect of automatically cleaning the contact surface during the receiver fixing process, eliminating the need for additional steps and preventing impurities from affecting measurement accuracy. Furthermore, the characteristic of gradually narrowing the ventilation gap and increasing the airflow velocity as the telescopic section retracts further enhances the ability to remove stubborn stains.

[0017] II. This invention features a detachable connection between the sleeve frame and the base structure on the positioning rotating frame. The rotating telescopic rod drives the sleeve frame to rotate intermittently to achieve point transfer. The clamping cam controls the approach and disengagement of the base structure towards the flange end face. After the electromagnet is energized and attracted, the protruding part of the clamping cam separates from the base, allowing the base to be rigidly fixed to the flange in an independent state to complete static measurement. This achieves the effect of replacing manual hand-held pressing and avoiding the impact of vibration and rigid transmission on the measurement during the transfer process. At the same time, it ensures that the receiver is in a truly static state during the measurement process, significantly improving data stability and repeatability accuracy.

[0018] Third, this invention combines the inflation part with the clamping cam drive mechanism. When the rotating shaft rotates, it drives the piston block to slide and compress the air chamber in the spiral groove. While the base structure is pressed and fixed, high-pressure gas is automatically accumulated in the pressure boosting cylinder to provide high-pressure gas for subsequent cleaning. In this way, the preparation work before the receiver information is collected can be completed simultaneously, which reduces manual operation steps, improves detection efficiency, and reduces labor intensity. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the laser receiver of the present invention; Figure 2 This is an exploded perspective view of the base portion of the present invention from below; Figure 3 This is a cross-sectional view and a partial enlarged view of the base of the present invention; Figure 4 For the present invention Figure 3 A sectional perspective view and a magnified partial view; Figure 5 This is a diagram showing the positional relationship between the frame and the base of the present invention; Figure 6 This is an exploded perspective view of the rotating shaft, clamping cam, and piston block of the present invention; Figure 7 This is a partial sectional perspective view of the frame edge segment of the present invention; Figure 8 This is a partial exploded view of the frame of the present invention; Figure 9 This is a partial cross-sectional view of the frame of the present invention; Figure 10 This is a front view of the receiver of the present invention mounted on the positioning and rotating frame; Figure 11 This is a top view of the receiver of the present invention mounted on the positioning and rotating frame; Figure 12 This is a cross-sectional schematic diagram of the base and clamping cam of the present invention.

[0020] In the diagram: 1. Receiver; 2. Base; 3. Telescopic part; 4. Electromagnet; 5. Pressure booster cylinder; 6. Exhaust port; 7. Spring; 8. Air jet channel; 9. Sleeve hole; 10. Top pin; 11. Air blocking component; 12. Compression spring; 13. Tension spring; 14. Contact switch; 15. Internal air passage; 16. Sleeve frame; 17. Connecting block; 18. Air chamber; 19. Spiral groove; 20. Rotating shaft; 21. Clamping cam; 22. Piston block; 23. Sliding pin; 24. Support frame; 25. Central column; 26. Rotating telescopic rod; 27. Limiting slider; 28. Receiving groove. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] Please see Figures 1 to 12 The present invention provides a technical solution: an end face precision testing device for wind power flange production, including a laser emitter, a laser receiver and a display unit. The laser receiver has a receiver 1, a base structure and a cleaning component disposed on the base structure. The base structure can be adsorbed and fixed on the flange end face. The cleaning component has a jet section that can spray high-speed airflow and can perform jet cleaning on the contact area between the base structure and the flange end face.

[0023] The end face precision testing device firstly adopts existing technology equipment for the laser emitter, the receiver 1 of the laser receiver, and the display unit. The main improvement is in the base structure of the laser receiver. Therefore, the working principle and debugging process of the laser emitter, receiver 1, and display unit will not be described in detail. Only the base structure and cleaning method will be described in detail.

[0024] Currently, existing laser receiver base structures typically use electromagnets, with measurement personnel using the electromagnet to attach it to the flange face. However, during the manufacturing process, impurities or debris inevitably adhere to the flange face, potentially becoming trapped between the base and the flange face, thus affecting the receiver's position. This necessitates continuous cleaning of both the electromagnet base and the flange face. Manually wiping the electromagnet base is time-consuming and labor-intensive; furthermore, the flange face, being a large area, requires additional cleaning steps. Therefore, this design integrates the cleaning component with the base structure to enable cleaning of both the flange and base face. The specific method is as follows: First, in this case, the base structure can also be fixed in other ways, such as by using suction cups for adsorption, applying force from external structures, or manually pressing it down, provided that the contact surfaces between the base structure and the flange end face are kept clean.

[0025] Secondly, the jet cleaning unit uses airflow to clean the contact area of ​​the base structure and flange end face. This cleaning method can concentrate the cleaning area and make the airflow impact stronger. On the other hand, compared with existing methods such as wiping or scraping, there is no need to clean the cleaning parts (such as wiping cloths or scraping parts), and it will not add unnecessary cleaning scratches. Therefore, the jet cleaning method is more practical.

[0026] In one preferred embodiment, a specific implementation of the base structure is provided, which can be found in [reference]. Figure 1-3 The base structure includes a base 2, the bottom surface of which is hollow, and an electromagnet 4 is slidably installed in the cavity. A vertical groove is opened on the top surface of the base 2, and a connecting block 17 is slidably installed in the vertical groove. A receiver 1 is installed on the guide rod of the connecting block 17. The receiver 1 can slide and adjust on the guide rod of the connecting block 17. The receiver 1 can be positioned by designing high damping between the two, or it can be fixed by common methods, such as loosening or tightening the bolts on the receiver 1 to disengage from or press against the guide rod. A through hole communicating with the cavity is opened inside the vertical groove. The bottom extension rod of the connecting block 17 passes through the through hole into the cavity and is fixedly connected to the electromagnet 4. A tension spring 13 is installed between the electromagnet 4 and the inner top of the cavity. The base structure also includes a telescopic part 3 that is slidably installed in the cavity and can elastically extend and retract. The elastic extension and retraction of the telescopic part 3 can be achieved by a spring 7 installed between it and the inner wall of the cavity, and the bottom plane of the telescopic part 3 always extends beyond the bottom plane of the base 2.

[0027] First, the connecting block 17 connects the electromagnet, the connecting block 17, and the receiver 1 into a single unit. The fixation of the receiver 1 and whether it is in its actual position after fixation depend on the cleanliness of the contact surface between the electromagnet 4 and the flange end face. Therefore, the cleaning component mainly cleans the contact surface area between the electromagnet 4 and the flange. Furthermore, the remaining structures of the base structure, such as the base 2 and the telescopic part 3, can be made of lightweight materials (such as rigid plastic) to reduce the overall weight of the base structure. Especially when the flange needs to be tested in an upright state, the weight reduction of the base structure can reduce the burden on the electromagnet 4, making its adsorption and fixation more stable.

[0028] Secondly, the bottom end face of the base structure is composed of the end faces of the base 2, the electromagnet 4, and the telescopic part 3, and see... Figure 3In normal conditions, the bottom surface of the telescopic part 3 extends beyond the plane of the base 2. Under the action of the tension spring 13, the electromagnet 4 is in a retracted state relative to the telescopic part 3. Therefore, when the base structure contacts the flange end face, the telescopic part 3 will first contact the flange end face and retract under pressure (taking the existing manual transfer base structure as an example). During this process, a gradually narrowing ventilation gap will be formed between the electromagnet 4 and the flange end face. This ventilation gap is the direction of the jet spray on the cleaning component. That is, the jet sprays high-speed airflow into the ventilation gap to remove attached debris and impurities, achieving the effect of cleaning the contact surface between the electromagnet 4 and the flange end face. Subsequently, after the electromagnet 4 is energized and generates magnetic force, the magnetic attraction between it and the flange will overcome the tension of the tension spring 13 and slide on the base 2 until it is adsorbed and fixed on the flange end face, completing the fixation of the receiver 1. Once it is stable, it can be used with the laser transmitter to collect data.

[0029] It is worth mentioning that during the installation process, by utilizing the telescopic part 3 to control the width of the ventilation gap, the jet can clean both the end face of the electromagnet 4 and the end face of the flange while maintaining effective cleaning power. At the same time, the gradual reduction of the ventilation gap can accelerate the airflow speed and further improve the airflow impact force to deal with any stubborn stains, thus improving the cleaning effect.

[0030] After the data collection is completed, the base structure can be separated from the flange by turning off the power to the electromagnet 4. At the same time, the telescopic part 3 will extend elastically again, while the electromagnet 4 will be reset under the action of the tension spring 13, preparing for the data collection at the next point.

[0031] In this way, the cleaning of the contact area between the electromagnet 4 and the flange end face can be completed simultaneously during the operation of fixing the base structure, without the need for additional procedures, saving time and effort.

[0032] In one preferred embodiment, a further implementation method for controlling the energization or de-energization of the electromagnet 4 is provided to control the timing of the electromagnet 4's attraction; see details below. Figure 3 The inner wall of the cavity of the telescopic part 3 is equipped with a contact switch 14 that can control the start and stop of the electromagnet 4 by electrical signal.

[0033] By installing a contact switch 14 on the inner wall of the cavity of the telescopic part 3, the telescopic part 3 can contact the contact switch 14 when it retracts inward and trigger it to start the control electromagnet 4. The cleaning process needs to be carried out before the contact switch 14 is triggered, so the electromagnet 4 can be started automatically without the need for switching operation. In actual situations, the operator can complete the operation with one hand. Conversely, after the data collection is completed, when the operator pulls the base 2 outward, due to the elastic force exerted by the spring 7 on the telescopic part 3, the telescopic part 3 will remain in contact with the flange end face. Therefore, the telescopic part 3 will slide relative to the base 2 until it separates from the contact switch 14 again, thereby controlling the electromagnet 4 to close, releasing the base structure from fixation, and completing the disassembly process.

[0034] It is worth noting that, in the fixed state, the tension force exerted by the tension spring 13 on the base 2 is greater than the rebound force of the spring 7 on the base 2. This ensures that when the electromagnet 4 is attracted to the flange end face, the telescopic part 3 always remains in contact with the contact switch 14, thus ensuring the open state of the electromagnet 4.

[0035] It is worth mentioning that the force applied by the operator to the base structure in this disassembly method is a pulling force perpendicular to the flange end face. Therefore, when the electromagnet 4 is turned off, the base structure will directly detach from the flange end face. This can minimize or avoid surface scratches caused by dragging or prying, and further avoid damage to the flange end face.

[0036] In one of the preferred embodiments described above, an implementation of the cleaning component is provided, which can be found in the following details. Figure 2-4 The cleaning component includes a sleeve hole 9 opened inside the telescopic part 3, and an air jet part is an air jet groove 8 opened near the bottom side wall of the telescopic part 3, and the air jet groove 8 communicates with the sleeve hole 9. A booster cylinder 5 inserted into the sleeve hole 9 is fixed at the bottom of the cavity. A switch is provided at the bottom of the booster cylinder 5. When the telescopic part 3 is pressed back into the cavity by a distance exceeding a preset range, the switch is opened and the booster cylinder 5 and the sleeve hole 9 are connected. The cleaning assembly also includes an inflation section for maintaining a high pressure inside the booster cylinder 5.

[0037] First, the pressure boosting cylinder 5 is kept under high pressure by the inflation section. Alternatively, an external air pump can be connected via an air supply pipe. This way, whether the flange is being inspected laterally or vertically, and when the base structure is being moved manually, dragging an air supply pipe will not significantly affect the overall operation.

[0038] Secondly, when the telescopic part 3 is pushed back into the base 2, if the distance it is pushed back exceeds the preset range, it can be further shown that the ventilation gap between the electromagnet 4 and the flange end face is within a suitable width. Therefore, the switch will open, so that the high-pressure gas in the booster cylinder 5 is released from the sleeve hole 9 and a high-speed airflow is sprayed out from the jet groove 8 into the ventilation gap, thereby achieving a cleaning effect.

[0039] It is worth noting that as the telescopic part 3 is pushed back, the booster cylinder 5 gradually extends into the sleeve hole 9. This reduces the space inside the sleeve hole 9, allowing the airflow to directly enter the jet groove 8 and be discharged when the booster cylinder 5 releases air pressure instantaneously, reducing the loss of air kinetic energy. On the other hand, when the switch is not opened, the booster cylinder 5 will first squeeze the airflow in the sleeve hole 9 out through the jet groove 8, thus cleaning the inside of the jet groove 8. This allows the high-speed airflow that is subsequently ejected to directly act on the impurities in the ventilation gap and carry them out. If there are impurity particles in the jet groove 8, the high-speed airflow in the jet groove 8 will first act on the impurity particles. If the impurity particles are ejected at high speed from the jet groove 8, they may directly impact the electromagnet 4 or the flange end face, causing scratches. Therefore, the booster cylinder 5 squeezes the air out of the sleeve hole 9 in advance to avoid this phenomenon, ensuring the cleaning effect while protecting the flange end face and the end face of the base structure.

[0040] The opening of the jet chute 8 is flat, and the internal corners of the jet chute 8 are rounded. This flat outlet design ensures both the coverage of the airflow and the high-speed flow of the airflow, while the rounded transition surfaces at the internal corners ( Figure 4 (As shown) This can reduce the kinetic energy loss of the gas, thus ensuring the cleaning effect.

[0041] In one of the preferred embodiments described above, an implementation of a switching element is provided to control the timing of its opening and closing; see details below. Figure 3-4 The switching component includes an exhaust hole 6 at the bottom of the booster cylinder 5. An air-blocking component 11 is slidably installed on the inner wall of the booster cylinder 5 via a bracket. The air-blocking component 11 has a baffle with a diameter larger than that of the exhaust hole 6, and a compression spring 12 is installed between the baffle and the bracket. A top pin 10 extending into the sleeve hole 9 is also installed at the inner bottom of the jet groove 8.

[0042] In the closed state, the baffle plate will block and seal the exhaust port 6 under the pressure of the compression spring 12. Then, as the telescopic part 3 retracts, when the top pin 10 contacts the baffle plate and pushes it open, the pressure boosting cylinder 5 will be connected to the sleeve hole 9 to release the air pressure and complete the cleaning process.

[0043] Conversely, when the telescopic part 3 is reset, the baffle of the air-blocking part 11 will block and seal the exhaust port 6 again.

[0044] It is worth noting that, in order to improve the sealing effect of the baffle, the vent 6 is set as... Figure 4The inverted cone shape shown is also designed with the baffle in the same inverted cone shape, so that it can be embedded in the exhaust hole 6 to increase the sealing performance. Secondly, in order to release the air pressure more quickly when the exhaust hole 6 is opened and make the discharged clean airflow faster, the depth of the baffle extending into the exhaust hole 6 should be as small as possible. Because there is a process when the top pin 10 opens the baffle, if the speed is slow, the inverted cone-shaped baffle will first form an annular gap with the exhaust hole 6, causing the air pressure to leak prematurely. This may result in the last released clean airflow having a reduced flow rate due to insufficient air pressure, thus leading to poor cleaning effect.

[0045] This can be solved by speeding up the retraction speed of the telescopic part 3 or by increasing the air pressure in the booster cylinder 5. However, these methods require additional force or power consumption of the air pump. Therefore, based on this structure, a more preferred method is to minimize the depth of the baffle inserted into the exhaust hole 6 so that the baffle can quickly detach and open the exhaust hole 6, thereby ensuring that the air pressure in the booster cylinder 5 can be released instantly to form a high-speed airflow, thus ensuring the cleaning effect.

[0046] In one of the preferred embodiments described above, a shape design for the telescopic portion 3 is provided. This design further restricts the direction and range of the ventilation gap, ensuring a cleanliness effect between the electromagnet 4 and the local end face of the flange. See [link to details]. Figure 2 The telescopic part 3 is designed as a C-shaped semi-enclosed structure, and the inner wall of the telescopic part 3 is slidably connected to the electromagnet 4. The bottom surface of the telescopic part 3 is also provided with a receiving groove 28.

[0047] It is worth noting that during the above process, the plane of base 2 never contacts the flange end face; that is, initially only the telescopic part 3 contacts the flange end face. However, after the electromagnet 4 is energized, both the electromagnet 4 and the telescopic part 3 contact the flange end face. This is to ensure the existence of a ventilation gap. See details below. Figure 3 The gap between the base 2 and the flange end face is equivalent to the air outlet of the ventilation gap, and the C-shaped semi-enclosed structure allows high-speed airflow to flow from one side to the other, thereby making the cleaning area more concentrated and the cleaning effect better.

[0048] The design of the receiving groove 28 is to provide a fault tolerance space at the edge of the electromagnet 4. That is, if some impurities are not blown away in time, they can be blown into the receiving grooves 28 on both sides to ensure that there are no impurities in the corresponding range of the electromagnet 4.

[0049] In a further preferred embodiment, an implementation method is provided that can replace a manually moved laser receiver, as detailed below. Figure 5 and Figure 8-11The end face accuracy detection device also includes a positioning rotating frame, which includes a rotating telescopic rod 26 that can rotate intermittently with the flange axis as a reference. The telescopic end of the rotating telescopic rod 26 is fixed with a sleeve frame 16 that is sleeved around the base 2. The sleeve frame 16 is a regular polygonal design. A rotating shaft 20 is rotatably installed inside each side segment, and two adjacent rotating shafts 20 are driven by bevel gear meshing. A servo motor for driving one of the rotating shafts 20 is installed on the outer wall of the sleeve frame 16. A clamping cam 21 is rotatably installed in the middle of each side segment. The clamping cam 21 is fixedly connected to the corresponding rotating shaft 20 by a connector, and the outer wall of the side segment is provided with a through groove for the connector to pass through and move.

[0050] First, the rotation axis of the rotating telescopic rod 26 is aligned with the axis of the flange through an external structure. Then, the intermittent rotation of the rotating telescopic rod 26 can drive the sleeve frame 16 and the base 2 clamped and fixed inside it to transfer the position. The telescopic rod part can be implemented using existing technologies such as electric telescopic rods. In this way, the receiver 1 can collect data on the positions of the flange within different diameter ranges.

[0051] After the sleeve 16 and the base 2 inside it move to the designated position, the servo motor on the outer wall of the sleeve 16 drives the rotating shaft 20 to rotate. Under the transmission of the bevel gear, all the rotating shafts 20 will rotate synchronously. Then, the rotation of the clamping cam 21 will drive the base 2 to move closer to the flange end face. Figure 12 For example, when the protruding part of the clamping cam 21 is not disengaged from the base 2, the base 2 will move with the rotation of the clamping cam 21 until the electromagnet 4 is turned on and attracted to the flange end face (as shown in Figure b). Then, the continued rotation of the clamping cam 21 will cause the protruding part to disengage from the base 2, thereby fixing the base 2 independently on the flange end face. This replaces the method of manually pressing the base 2 against the flange end face, while also preserving the static measurement state of the overall laser receiver during the acquisition process, avoiding the influence of the vibration and rigid transmission of the rotating telescopic rod 26 during the movement on the measurement of the base 2 and the receiver 1.

[0052] Subsequently, after the data acquisition at this point is completed, the clamping cam 21 is rotated in the opposite direction to make its protruding part re-contact and clamp with the base 2, and the base 2 is pulled outward until the telescopic part 3 separates from the contact switch 14 and controls the electromagnet 4 to close, so that the base 2 can be removed and then transferred to the next point for measurement.

[0053] In the further preferred embodiment described above, an implementation method is provided that allows for inflation of the pressure booster cylinder 5 while simultaneously pressing the base 2, thereby increasing the internal air pressure in preparation for subsequent cleaning. See details below. Figure 6-9The inflation part includes an air chamber 18 opened inside the side section of the frame 16, and the axis of the rotating shaft 20 coincides with the axis of the spiral groove 19. A piston block 22 is slidably installed on the outer wall of the rotating shaft 20. The piston block 22 and the inner wall of the air chamber 18 are sealed and slidably designed. The inner wall of the air chamber 18 is provided with a spiral groove 19. The outer wall of the piston block 22 is fixed with a sliding pin 23 that extends into and is slidably installed in the spiral groove 19. The outer wall of the frame 16 is connected to an air pipe that supplies air from the air chamber 18 to the booster cylinder 5 in one direction. The outer wall of the frame 16 is also provided with an air intake port that allows air to enter in one direction.

[0054] First, as the rotating shaft 20 rotates and the clamping cam 21 rotates, the rotating shaft 20 also drives the piston block 22 to rotate synchronously. Due to the sliding limit between the piston block 22 and the piston block 22 (which can be installed by sliding with a flat key), when the piston block 22 rotates, the sliding pin 23 will slide in the spiral groove 19, so that the piston block 22 rotates and slides axially at the same time, thereby compressing the air in the air chamber 18 and inputting it into the pressure boosting cylinder 5 through the air pipe to accumulate air pressure, so as to provide high-pressure gas for subsequent cleaning. In this way, by combining the accumulation of air pressure with the installation stage of the base 2, the preparation work before the receiver 1 collects information can be completed synchronously.

[0055] Conversely, during the structural reset phase, the air chamber 18 can be replenished with gas through the air intake to prepare for the next accumulation.

[0056] To ensure sufficient air pressure inside the booster cylinder 5, an air chamber 18 is designed on each side of the sleeve 16, and piston blocks 22 are symmetrically designed on the rotating shafts 20 on both sides of the clamping cam 21. Figure 8-9 As shown, each air chamber 18 is connected to an air pipe. To ensure that they can all communicate with the booster cylinder 5, an internal air channel can be provided inside the base 2, such as... Figure 3 As shown, this is to facilitate the connection of the trachea.

[0057] In order to enable the rotating telescopic rod 26 to rotate about the flange axis, a centering and positioning method is provided, which can be found in the following description. Figure 10-11 The positioning and rotating frame also includes a central column 25, and a rotating telescopic rod 26 is sleeved and rotatably installed on the outer wall of the central column 25. Multiple support frames 24 are evenly distributed around the outer wall of the central column 25, and each of the multiple support frames 24 is equipped with a sliding adjustable limit slider 27.

[0058] This method is more suitable for testing flanges in a flat position. First, the flange is placed horizontally on the support frame 24 by an external mechanism (such as a hoisting structure). Then, the flange is positioned and fixed by adjusting the limit slider 27 in a synchronous sliding manner, so that the central column 25 coincides with the axis of the flange. Therefore, rotating the telescopic rod 26 can rotate the flange with the axis of the flange as the reference. The specific rotation method can be driven by an existing motor, such as using a conveyor belt or gear transmission, etc. The specific structure is not shown in the figure.

[0059] Furthermore, the central column 25 can also provide a mounting location for the laser emitter (in order to...). Figure 10 For example, in the figure, a shows a laser emitter. It should be noted that the receiver 1 of the laser emitter and the laser receiver should be located above other structures to avoid blocking the laser emitted by the laser emitter.

[0060] Among them, such as Figure 11 As shown, the adjustment of the limit slider 27 can be achieved by using the existing screw and threaded block (the limit slider 27 has a threaded hole), so it will not be described in detail.

[0061] The standard parts used in this embodiment can be purchased directly from the market, while the non-standard structural parts described in the specification and drawings can be processed directly based on existing technical knowledge without any doubt. At the same time, the connection methods of each component adopt mature conventional methods in the existing technology, and the machinery, parts and equipment all adopt conventional models in the existing technology, so they will not be described in detail here.

[0062] Although embodiments of the 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 invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A device for testing the end face accuracy in wind turbine flange production, comprising a laser emitter, a laser receiver, and a display unit, characterized in that, The laser receiver has a receiver (1) and a base structure, and the base structure can be fixed to the flange end face; It also includes a cleaning component mounted on the base structure, the cleaning component having a jet section capable of ejecting high-speed airflow, and the jet section capable of jet cleaning the contact area between the base structure and the flange end face.

2. The end face accuracy testing device for wind turbine flange production according to claim 1, characterized in that: The base structure includes a base (2), the bottom surface of the base (2) is a cavity, and an electromagnet (4) is slidably installed in the cavity. The top surface of the base (2) is provided with a vertical groove, and a connecting block (17) is slidably installed in the vertical groove. The receiver (1) is installed on the guide rod of the connecting block (17). The inside of the vertical groove is provided with a through hole communicating with the cavity. The bottom extension rod of the connecting block (17) passes through the through hole into the cavity and is fixedly connected to the electromagnet (4). A tension spring (13) is installed between the electromagnet (4) and the inner top of the cavity. The base structure also includes a telescopic part (3) that is slidably installed in the cavity and can elastically extend and retract, and the bottom plane of the telescopic part (3) always extends beyond the bottom plane of the base (2).

3. The end face accuracy testing device for wind turbine flange production according to claim 2, characterized in that: The inner wall of the cavity of the telescopic part (3) is equipped with a contact switch (14) that can control the start and stop of the electromagnet (4) by electrical signal.

4. The end face accuracy testing device for wind turbine flange production according to claim 2, characterized in that: The cleaning component includes a sleeve hole (9) opened inside the telescopic part (3), the jet part is a jet groove (8) opened near the bottom side wall of the telescopic part (3), and the jet groove (8) communicates with the sleeve hole (9). A booster cylinder (5) inserted into the sleeve hole (9) is fixed at the bottom of the cavity. A switch is provided at the bottom of the booster cylinder (5). When the telescopic part (3) is pressed back into the cavity by a distance exceeding a preset range, the switch is opened and the booster cylinder (5) and the sleeve hole (9) are connected. The cleaning assembly also includes an inflation section for maintaining a high pressure inside the booster cylinder (5).

5. The end face accuracy testing device for wind turbine flange production according to claim 4, characterized in that: The switching element includes an exhaust hole (6) at the bottom of the booster cylinder (5). An air-blocking element (11) is slidably installed on the inner wall of the booster cylinder (5) via a bracket. The air-blocking element (11) has a baffle with a diameter larger than that of the exhaust hole (6), and a compression spring (12) is installed between the baffle and the bracket. A top pin (10) extending into the sleeve hole (9) is also installed at the inner bottom of the jet groove (8).

6. The end face accuracy testing device for wind turbine flange production according to claim 4, characterized in that: The end face accuracy detection device also includes a positioning rotating frame, which includes a rotating telescopic rod (26) that can rotate intermittently with the flange axis as a reference. The telescopic end of the rotating telescopic rod (26) is fixed with a sleeve frame (16) sleeved around the base (2). The sleeve frame (16) is a regular polygonal design. A rotating shaft (20) is rotatably installed inside each side segment. Two adjacent rotating shafts (20) are driven by bevel gear meshing. A servo motor for driving one of the rotating shafts (20) to rotate is installed on the outer wall of the sleeve frame (16). A clamping cam (21) is rotatably installed in the middle of each side segment. The clamping cam (21) is fixedly connected to the corresponding rotating shaft (20) by a connector. The outer wall of the side segment is provided with a through groove for the connector to pass through and move.

7. The end face accuracy testing device for wind turbine flange production according to claim 6, characterized in that: The inflation part includes an air chamber (18) opened inside the side section of the sleeve frame (16), and the axis of the rotating shaft (20) coincides with the axis of the spiral groove (19). A piston block (22) is slidably installed on the outer wall of the rotating shaft (20). The piston block (22) and the inner wall of the air chamber (18) are sealed and slidably designed. The inner wall of the air chamber (18) is provided with a spiral groove (19). The outer wall of the piston block (22) is fixed with a sliding pin (23) that extends into and is slidably installed in the spiral groove (19). The outer wall of the sleeve frame (16) is connected to an air pipe that supplies air from the air chamber (18) to the booster cylinder (5) in one direction. The outer wall of the sleeve frame (16) is also provided with an air intake port that allows air to enter in one direction.

8. The end face accuracy testing device for wind turbine flange production according to claim 6, characterized in that: The positioning rotating frame also includes a central column (25), and the rotating telescopic rod (26) is sleeved and rotatably installed on the outer wall of the central column (25). Multiple support frames (24) are evenly distributed around the outer wall of the central column (25), and each of the multiple support frames (24) is equipped with a sliding adjustable limit slider (27).

9. The end face accuracy testing device for wind turbine flange production according to claim 2, characterized in that: The telescopic part (3) is designed as a C-shaped semi-enclosed structure, and the inner wall of the telescopic part (3) is slidably connected to the electromagnet (4). The bottom surface of the telescopic part (3) is also provided with a receiving groove (28).

10. The end face accuracy testing device for wind turbine flange production according to any one of claims 4-8, characterized in that: The opening of the jet groove (8) is flat, and the internal corner of the jet groove (8) is a rounded transition surface.

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