Device and method for testing mechanical strength of fan blade nesting

Abstract

The invention discloses a fan blade nesting mechanical strength testing device and method. The testing device comprises a base, and a strength testing mechanism and a station switching mechanism are arranged on the base; the strength testing mechanism is used for applying a preset testing force to the fan blade nesting located at an operation position on the station switching mechanism; the station switching mechanism comprises a bearing table, and a first station and a second station are arranged on the bearing table and used for bearing fan blade nests correspondingly; the bearing table is arranged on the guide rail assembly, and the guide rail assembly is used for guiding the bearing table to move along a preset path. The strength testing mechanism and the station switching mechanism are arranged on the base, and the station switching mechanism comprises the bearing table with the first station and the second station, the guide rail assembly and the driving assembly, so that the bearing table can reciprocate between the first position and the second position; therefore, when one station is located at the operation position to receive a strength test, the other station is located at the pick-and-place position to allow an operator to pick and place materials.

Description

Technical Field

[0001] This invention relates to the field of automated testing equipment technology, and in particular to a device and method for testing the mechanical strength of nested wind turbine blades. Background Technology

[0002] The fan blade housing is a key component used for noise reduction in air conditioning and other equipment. It typically consists of an aluminum alloy frame, a bushing, and an elastomer material such as neoprene rubber filling the space between them. The bonding strength between the elastomer material and the aluminum alloy frame and bushing is a critical quality indicator determining the lifespan and operational safety of the fan blade.

[0003] To ensure product quality, it is currently necessary to conduct 100% mechanical strength testing on all fan blade nesting components during the incoming material stage. This testing process typically uses a general-purpose tensile and compressive testing machine, where the fan blade nesting components are manually placed on the testing fixture for compression or tensile testing.

[0004] However, traditional testing methods follow a sequential process of "placement-testing-waiting-removal". During the pressure holding period of the test, both the operators and the equipment are in a waiting state, which fails to make effective use of time, resulting in a long overall test cycle and making it difficult to meet the full inspection efficiency requirements of mass production.

[0005] Therefore, there is an urgent need in this technical field for a mechanical strength testing scheme for nested wind turbine blades that can improve testing efficiency. Summary of the Invention

[0006] The main objective of this invention is to provide a device and method for testing the mechanical strength of nested wind turbine blades, in order to solve the above-mentioned technical problems.

[0007] In a first aspect, the present invention provides a wind turbine blade nesting mechanical strength testing device, comprising a base, wherein a strength testing mechanism and a workstation switching mechanism are provided on the base; the strength testing mechanism is used to apply a preset test force to a wind turbine blade nesting located in a working position on the workstation switching mechanism; the workstation switching mechanism includes: A support platform, wherein the support platform is provided with a first workstation and a second workstation, for respectively supporting the nested fan blades; A guide rail assembly, wherein the support platform is mounted on the guide rail assembly, and the guide rail assembly is used to guide the support platform to move along a preset path; and A drive component, which is connected to the support platform, is used to drive the support platform to reciprocate between a first position and a second position on the preset path; Wherein, when the support platform is in the first position, the first workstation is located in the working position, and the second workstation is located in a pick-and-place position; when the support platform is in the second position, the second workstation is located in the working position, and the first workstation is located in another pick-and-place position.

[0008] The strength testing mechanism includes a test actuator and a support; the test actuator includes a compression cylinder and a test head located at the drive end of the compression cylinder, and the compression cylinder is fixed to the base by the support.

[0009] The strength testing mechanism further includes a first solenoid valve and a pressure regulating valve; the first solenoid valve and the pressure regulating valve are respectively connected to the air circuit of the extrusion cylinder.

[0010] The support platform includes a base and a test tray detachably mounted on the base; the base is connected to the guide rail assembly, and the test tray is provided with a first workstation and a second workstation arranged sequentially along the preset path.

[0011] The test tray has a first groove group and a second groove group arranged sequentially along the preset path. The groove shapes in the first groove group and the second groove group are adapted to the shape of the nested fan blades. The first groove group and the second groove group respectively form the first work station and the second work station.

[0012] The bottom support has a receiving groove on its top surface, and the test tray is embedded in the receiving groove; the inner contour of the receiving groove is adapted to the outer contour of the test tray to limit the horizontal movement of the test tray.

[0013] The guide rail assembly includes a linear slide rail and a slider; the linear slide rail is fixed to the base, the slider slides with the linear slide rail and is fixedly connected to the base; the sliding path of the slider on the linear slide rail is located below the test actuator and extends from one side of the test actuator to the other side, so that the first station can selectively extend to one side of the test actuator and the second station can selectively extend to the other side of the test actuator; Wherein, when the first station extends out of one side of the test actuator, the first station is located in the other pick-and-place position; when the second station extends out of the other side of the test actuator, the second station is located in the first pick-and-place position.

[0014] The drive assembly includes a station cylinder and a second solenoid valve; the drive end of the station cylinder is fixedly connected to the base, and the second solenoid valve is connected to the air passage of the station cylinder.

[0015] The guide rail assembly further includes a connecting frame, which is fixedly connected to the drive end of the workstation cylinder. The base is provided with a limiting groove, and the connecting frame passes through the limiting groove to fixally connect the drive end of the workstation cylinder and the base.

[0016] Secondly, the present invention also provides a method for testing the mechanical strength of nested wind turbine blades, applied to the wind turbine blade nested mechanical strength testing device as described in the first aspect, the testing method comprising the following steps: The first wind vane to be tested is nested and placed in the first workstation; Drive the support platform to move to the first position, so that the first workstation is located in the working position, and at the same time, the second workstation is located in the pick-up and put-down position; The strength testing mechanism is controlled to apply a preset test force to the first test blade nested on the first station; During the testing of the first wind blade nest, the second wind blade nest is placed on the second workstation at the first pick-and-place position; After the test of the first nested wind blade is completed, the carrier platform is driven to move to the second position, so that the second work station is located in the working position, and the first work station is located in the other pick-up and put-down position. The strength testing mechanism is controlled to apply a preset test force to the second test blade nested on the second station; and During the testing of the second wind blade nest to be tested, the first wind blade nest to be tested that has been tested is removed from the first station which is in the other pick-and-place position.

[0017] The beneficial technical effects of this invention are as follows: By setting a strength testing mechanism and a station switching mechanism on the base, the present invention enables the support platform with a first station and a second station, a guide rail assembly, and a drive assembly to reciprocate between the first and second positions. This allows one station to be in the working position for strength testing while the other station is in the pick-and-place position, allowing operators to pick up and place materials. This dual-station operation design effectively utilizes the waiting time during the pressure holding period of the test, changes the problem of equipment and personnel idleness caused by the traditional serial operation process, significantly shortens the test cycle, improves the overall efficiency of the wind turbine nested mechanical strength test, and better meets the full inspection requirements of mass production. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a three-dimensional schematic diagram of the testing device provided in an embodiment of the present invention; Figure 2 This is a three-dimensional schematic diagram of the strength testing mechanism in the testing device provided in the embodiment of the present invention; Figure 3 This is a three-dimensional schematic diagram of the strength testing mechanism and the workstation switching mechanism in the testing device provided in the embodiment of the present invention; Figure 4 This is a three-dimensional schematic diagram of the workstation switching mechanism in the testing device provided in the embodiment of the present invention; Figure 5 This is a three-dimensional schematic diagram of the driving component in the testing device provided in an embodiment of the present invention; Figure 6 This is a schematic diagram of the interior of the base in the testing device provided in an embodiment of the present invention; Figure 7 This is a schematic diagram of the test method provided in an embodiment of the present invention.

[0020] Explanation of reference numerals in the attached figures: In the diagram: 10-Base, 20-Strength testing mechanism, 22-Bracket, 23-Compression cylinder, 24-Test head, 25-First solenoid valve, 26-Pressure regulating valve, 30-Station switching mechanism, 31-Bearing platform, 32-First station, 33-Second station, 34-Base support, 35-Test tray, 36-First groove group, 37-Second groove group, 38-Accommodation groove, 40-Guide rail assembly, 41-Linear slide rail, 42-Slider, 43-Connecting frame, 44-Limiting groove, 50-Drive assembly, 51-Station cylinder, 52-Second solenoid valve, 60-Controller, 63-Start switch, 64-Emergency stop switch, 100-Fan blade nesting. 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, not all, of the embodiments of the present invention. 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] It should be understood that, when used in this specification and the appended claims, the terms "comprising" and "including" indicate the presence of the described features, integrals, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components and / or collections thereof.

[0023] It should also be understood that the terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the invention. As used in this specification and the appended claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise.

[0024] It should also be further understood that the term "and / or" as used in this specification and the appended claims refers to any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0025] Please also refer to Figures 1-3 This invention provides a mechanical strength testing device for nested wind turbine blades. This device aims to solve the problem of low efficiency in traditional testing methods by setting up a dual-station parallel testing process, effectively utilizing the waiting time during pressure holding during testing, thereby significantly improving the testing cycle time and overall efficiency. The device includes a base 10, on which a strength testing mechanism 20 and a station switching mechanism 30 are provided. The strength testing mechanism 20 is used to apply a preset test force to the nested wind turbine blade 100 located in a working position on the station switching mechanism 30. The station switching mechanism 30 includes: a support platform 31, on which a first station 32 and a second station 33 are provided, for respectively supporting the nested wind turbine blade 100; and a guide rail assembly 40, on which the support platform 31 is disposed, and the guide rail assembly 40 is used to guide the support platform 31. The platform 31 moves along a preset path; and a drive assembly 50 is connected to the platform 31 and is used to drive the platform 31 to reciprocate between a first position and a second position on the preset path; wherein, when the platform 31 is in the first position, the first workstation 32 is located in the working position and the second workstation 33 is located in a pick-and-place position; when the platform 31 is in the second position, the second workstation 33 is located in the working position and the first workstation 32 is located in another pick-and-place position.

[0026] In this embodiment, the wind turbine blade nested mechanical strength testing device includes a base 10, a strength testing mechanism 20, and a station switching mechanism 30. Specifically, the base 10 in this embodiment can be a fiberglass base, which provides a stable and robust mounting foundation for the entire device. The strength testing mechanism 20 and the station switching mechanism 30 are both mounted on the base 10.

[0027] The strength testing mechanism 20 is vertically positioned above the base 10, and its function is to generate and apply a preset test force. During the test, the strength testing mechanism 20 applies the preset test force to the fan blade nest 100 located in the "operating position" directly below it to detect whether the mechanical connection strength of the fan blade nest 100 meets the standard.

[0028] The workstation switching mechanism 30 is mounted on the base 10 and located below the strength testing mechanism 20. This mechanism is used to carry the wind blade nest 100 to be tested, and through reciprocating motion, alternately moves different wind blade nests 100 to the working position to undergo strength testing.

[0029] More specifically, the workstation switching mechanism 30 includes a support platform 31, a guide rail assembly 40, and a drive assembly 50.

[0030] The support platform 31 is a component used to directly place the fan blade nest 100. The support platform 31 has a first workstation 32 and a second workstation 33 that are independent of each other. These two workstations are arranged sequentially along a preset path, so that the operator can place or remove the fan blade nest 100 at different workstations.

[0031] The guide rail assembly 40 is used to guide and support the movement of the support platform 31. In this embodiment, the support platform 31 is mounted on the guide rail assembly 40, and the guide rail assembly 40 restricts the support platform 31 to reciprocating movement only along the preset path.

[0032] The drive assembly 50 is connected to the support platform 31 and provides power for the movement of the support platform 31. The drive assembly 50 can drive the support platform 31 to move back and forth between a first position and a second position on a preset path defined by the guide rail assembly 40.

[0033] This structural design enables the switching of workstations. When the drive assembly 50 drives the support platform 31 to the first position, the first workstation 32 is precisely aligned with the working position below the strength testing mechanism 20. At this time, the strength testing mechanism 20 can test the fan blade nest 100 on the first workstation 32. Simultaneously, the second workstation 33 moves to a pick-and-place position on the side of the equipment, which is away from the working position, making it easy for the operator to safely remove the tested fan blade nest 100 or place a new fan blade nest 100 to be tested.

[0034] Accordingly, when the drive assembly 50 drives the support platform 31 to the second position, the second workstation 33 is moved to the working position to undergo strength testing. At the same time, the first workstation 32 moves to another pick-and-place position on the other side of the equipment for the operator to perform pick-and-place operations.

[0035] Through the above setup, this device enables parallel operation of testing and material handling: while one station is performing testing (e.g., pressure holding and waiting), the operator can handle material handling at another station, and vice versa. This dual-station switching design significantly reduces equipment and manpower downtime caused by waiting, greatly improves the efficiency of the 100% mechanical strength inspection of the fan blade nesting, and better meets the needs of mass production.

[0036] In one embodiment, the strength testing mechanism 20 includes a test actuator and a bracket 22; the test actuator includes a compression cylinder 23 and a test head 24 disposed at the drive end of the compression cylinder 23, and the compression cylinder 23 is fixed to the base 10 by the bracket 22.

[0037] like Figure 2 and Figure 3 As shown, in this embodiment, the strength testing mechanism 20 includes a test actuator and a support 22. The test actuator is the core component of the strength testing mechanism 20, used to generate and apply a preset test force. The test actuator includes a compression cylinder 23 and a test head 24 disposed at the drive end of the compression cylinder 23. The compression cylinder 23 is a pneumatic drive element, its cylinder body is fixedly mounted on the support 22, and its drive end faces downward and is perpendicular to the top surface of the base 10 to ensure that its axis is perpendicular to the movement plane of the support platform 31. When the compression cylinder 23 is working, it can provide downward compression force through the extension movement of its drive end. The test head 24 is fixedly disposed on the drive end of the compression cylinder 23 and moves up and down with the drive end. The test head 24 is a component that directly contacts the wind blade nest 100 to be tested, and its shape and size can be designed according to the specifications of the wind blade nest 100 to ensure that the test force can be applied evenly and accurately to the key parts of the wind blade nest 100.

[0038] The bracket 22 is used to support and fix the test actuator. In this embodiment, the bracket 22 can be a square steel structure, vertically fixed on the base 10, with its bottom firmly connected to the base 10 and its top fixedly connected to the cylinder body of the extrusion cylinder 23. The design of the bracket 22 ensures that the drive end of the extrusion cylinder 23 can be aligned with the working position below, so that the test head 24 moves vertically downward under the drive of the extrusion cylinder 23, applying a preset test force to the fan blade nest 100 located at the working position.

[0039] With the strength testing mechanism 20 configured as described above, when the station switching mechanism 30 moves the support platform 31 to an appropriate position, the extrusion cylinder 23 drives the test head 24 to press down onto the fan blade nest 100, applying a preset extrusion force, which can be maintained for a period of time to simulate the load conditions in actual use. By observing the deformation or cracking of the fan blade nest 100 under this force, its mechanical bonding strength can be evaluated. After the test is completed, the drive end of the extrusion cylinder 23 retracts, driving the test head 24 to reset, waiting for the next test cycle. This structure is not only easy to operate, but also effectively reduces human error in traditional manual testing, improving the reliability and consistency of the test.

[0040] In one embodiment, the strength testing mechanism 20 further includes a first solenoid valve 25 and a pressure regulating valve 26; the first solenoid valve 25 and the pressure regulating valve 26 are respectively connected to the air passage of the extrusion cylinder 23.

[0041] like Figure 2 As shown, in this embodiment, the strength testing mechanism 20 further includes a first solenoid valve 25 and a pressure regulating valve 26.

[0042] Both the first solenoid valve 25 and the pressure regulating valve 26 are connected to the air path of the compression cylinder 23 to control the compressed air entering the compression cylinder 23. Specifically, the pressure regulating valve 26 is connected in series between the air source and the first solenoid valve 25 to regulate the pressure of the compressed air supplied to the compression cylinder 23. Since the output force of the cylinder is proportional to the air source pressure, the operator can adjust the pressure regulating valve 26 to set the air path pressure value, thereby indirectly setting the preset test force applied by the test head 24 to the fan blade nest 100. This design allows the device to easily adapt to the testing needs of different models and strength requirements of the fan blade nest 100, exhibiting good versatility.

[0043] The first solenoid valve 25 is an electrical control element used to control the opening and closing of the air path and its reversal. It receives electrical signals from the control system (controller) and controls the extension and retraction of the compression cylinder 23 according to the signal commands. When testing is required, the control system sends an action signal to the first solenoid valve 25, which reverses the air path, allowing compressed air to enter the compression cylinder 23 and drive the test head 24 to press down. After the test is completed, the control system sends a reset signal, and the first solenoid valve 25 switches the air path, causing the compression cylinder 23 to retract and the test head 24 to reset.

[0044] By adding a pressure regulating valve 26 and a first solenoid valve 25, this device achieves adjustable test force and automated control of the test process, ensuring the stability of test conditions and the repeatability of test results, and further improving the accuracy and efficiency of the test.

[0045] In one embodiment, the support platform 31 includes a base 34 and a test tray 35 detachably mounted on the base 34; the base 34 is connected to the guide rail assembly 40, and the test tray 35 is provided with a first station 32 and a second station 33 arranged sequentially along the preset path.

[0046] like Figure 4 As shown, in this embodiment, the support platform 31 adopts a detachable design, which includes a base 34 and a test tray 35 detachably mounted on the base 34.

[0047] The base 34 is the base 10 of the support platform 31. Its structure is relatively stable and it is used to connect with other components of the workstation switching mechanism 30 (such as the guide rail assembly 40 and the drive assembly). In this embodiment, the base 34 is connected to the guide rail assembly 40, thereby enabling it to reciprocate under the guidance of the guide rail assembly 40.

[0048] The test tray 35 is the component that directly supports the nested fan blade 100 under test, and it is installed above the base 34. The test tray 35 has a first station 32 and a second station 33 arranged sequentially along the preset path. Specifically, the first station 32 and the second station 33 are linearly arranged on the test tray 35, and their arrangement direction is consistent with the preset path defined by the guide rail assembly 40. In this way, when the support platform 31 moves under the action of the drive assembly 50, the first station 32 and the second station 33 can smoothly alternately enter the working position or the corresponding pick-up and put-down position, ensuring the continuity and efficiency of the testing process.

[0049] The connection between the test tray 35 and the base 34 is detachable. This design offers several advantages: First, dedicated test trays 35 can be designed and manufactured to fit different models and sizes of the fan blade nesting 100. When testing different specifications of fan blade nesting 100, operators do not need to replace the entire support platform 31 or the entire device; they only need to quickly replace the corresponding test tray 35, greatly enhancing the device's versatility and adaptability. Second, when the test tray 35 wears or is damaged due to long-term use, it can be easily removed for repair or replacement, reducing maintenance costs and equipment downtime.

[0050] In summary, by designing the support platform 31 as a combination of the base support 34 and the detachable test tray 35, this device not only achieves the function of dual workstations, but also has excellent versatility and maintainability, and can flexibly meet diverse testing needs.

[0051] In one embodiment, a first groove group 36 and a second groove group 37 are arranged sequentially along the preset path on the test tray 35. The groove shapes in the first groove group 36 and the second groove group 37 are adapted to the shape of the fan blade nest 100. The first groove group 36 and the second groove group 37 respectively form the first work station 32 and the second work station 33.

[0052] like Figure 4 As shown, in this embodiment, in order to further improve the positioning accuracy and stability of the wind turbine blade nesting 100 during the testing process, a first groove group 36 and a second groove group 37 are sequentially arranged on the test tray 35 along the preset path. Each of the first groove group 36 and the second groove group 37 includes multiple grooves, which are arranged side by side on the top surface of the test tray 35 to form a set of test positions.

[0053] The groove shapes in the first groove group 36 and the second groove group 37 are adapted to the outer shape of the fan blade nest 100. Specifically, the inner contour of each groove is designed as a recessed structure that matches the bottom shape of the fan blade nest 100, with a moderate depth to accommodate the fan blade nest 100 and provide sufficient support surface. This adaptation design ensures that the fan blade nest 100 can be tightly embedded in the groove after placement, avoiding slippage, displacement, or uneven force due to extrusion during testing, thereby reducing potential mechanical damage and improving the accuracy of test results.

[0054] The first groove group 36 and the second groove group 37 respectively correspond to the first workstation 32 and the second workstation 33. In this embodiment, each groove group may include two or more grooves arranged side by side to form one or more pairs of test positions. This arrangement allows for the simultaneous strength testing of multiple blade nests 100 in a single test action, further improving the testing efficiency of the device. For example, the first groove group 36 corresponds to the first workstation 32 and is used to support multiple blade nests 100 to be tested when the first workstation 32 is in the working position; similarly, the second groove group 37 corresponds to the second workstation 33 and is used to support another set of blade nests 100.

[0055] Through the design of the aforementioned groove assembly, the test tray 35 not only achieves precise positioning of the fan blade nest 100, but also enhances the versatility of the device: test trays 35 with corresponding groove shapes can be customized for different specifications of fan blade nests 100, and can be quickly replaced when needed. This structure effectively eliminates test deviations caused by inaccurate positioning, ensuring the reliability and efficiency of mechanical strength testing.

[0056] In one specific embodiment, the first groove group 36 and the second groove group 37 each include two grooves arranged side by side. Correspondingly, two test heads 24 are arranged side by side at the drive end of the extrusion cylinder 23, and the positions of these two test heads 24 correspond one-to-one with the positions of the two grooves in the groove group. When the first station 32 (i.e., the first groove group) moves to the working position, the two test heads 24 can press down simultaneously to apply a test force to the two fan blade nests 100 in the first groove group 36. Similarly, when the second station 33 moves to the working position, the two test heads 24 can also test the two fan blade nests 100 in the second groove group 37 simultaneously. This "dual groove to dual test head" configuration enables the simultaneous detection of two workpieces in a single test action, doubling the efficiency of a single operation and further improving the overall testing efficiency of the device. At the same time, this design ensures the independent positioning of each fan blade nest 100, avoids cross-interference, and facilitates the operator to observe the strength performance of multiple samples during the test.

[0057] In one embodiment, the top surface of the base 34 is provided with a receiving groove 38, and the test tray 35 is embedded in the receiving groove 38; the inner contour of the receiving groove 38 is adapted to the outer contour of the test tray 35 to horizontally limit the test tray 35.

[0058] like Figure 5 As shown, in this embodiment, to further ensure the installation stability and positioning accuracy of the test tray 35 on the base 34, the top surface of the base 34 is provided with a receiving groove 38, and the test tray 35 is embedded in the receiving groove 38. The receiving groove 38 is a recessed structure formed on the top surface of the base 34, with a moderate depth to accommodate the bottom of the test tray 35.

[0059] The inner contour of the receiving groove 38 is adapted to the outer contour of the test tray 35. Specifically, the shape and size of the inner sidewall of the receiving groove 38 are designed to closely match the outer sidewall of the test tray 35. For example, if the outer contour of the test tray 35 is rectangular, the inner contour of the receiving groove 38 is also rectangular, and its size is slightly larger than the outer size of the test tray 35, so that the test tray 35 can be easily inserted without becoming loose. This adaptation design ensures that after the test tray 35 is inserted into the receiving groove 38, it is restricted in the horizontal direction by the inner wall of the receiving groove 38, and cannot move forward, backward, left, or right, thereby achieving horizontal positioning of the test tray 35.

[0060] The aforementioned receiving slot 38 simplifies the installation and removal process of the test tray 35 (operators only need to vertically insert or remove the test tray 35 from the receiving slot 38), and also ensures that the test tray 35 remains fixed during the movement of the support platform 31, preventing misalignment due to vibration or external forces. This structure enhances the stability and reliability of the entire support platform 31, effectively preventing accidental displacement of the fan blade nesting 100 during testing, and further improving the testing accuracy and safety of the device. Simultaneously, this design facilitates quick replacement of test trays 35 of different specifications, maintaining the versatility of the device.

[0061] In one embodiment, the guide rail assembly 40 includes a linear slide rail 41 and a slider 42; the linear slide rail 41 is fixed to the base 10, the slider 42 slides with the linear slide rail 41 and is fixedly connected to the base 34; the sliding path of the slider 42 on the linear slide rail 41 is located below the test actuator and extends from one side of the test actuator to the other side, so that the first station 32 can selectively extend to one side of the test actuator and the second station 33 can selectively extend to the other side of the test actuator; wherein, when the first station 32 extends to one side of the test actuator, the first station 32 is located in the other pick-and-place position; when the second station 33 extends to the other side of the test actuator, the second station 33 is located in the first pick-and-place position.

[0062] like Figure 4 and Figure 5 As shown, in this embodiment, in order to achieve smooth and precise reciprocating motion of the support platform 31 on a preset path, the guide rail assembly 40 includes a linear slide rail 41 and a slider 42. The linear slide rail 41 is a linear guiding element, which is fixedly installed on the top surface of the base 10. Its extension direction defines the preset path of the support platform 31 as a straight path to match the needs of workstation switching.

[0063] The slider 42 slidably engages with the linear guide rail 41 and is fixedly connected to the base 34. Specifically, the bottom of the slider 42 has a sliding structure (such as a ball bearing or slider 42 groove) that matches the linear guide rail 41, allowing the slider 42 to slide along the linear guide rail 41 with low friction. The top of the slider 42 is securely connected to the bottom of the base 34 by bolts or other fixing methods, thereby transmitting the movement of the slider 42 to the entire support platform 31 (including the base 34 and the test tray). This connection ensures that the support platform 31 remains stable during movement, avoiding tilting or deviation.

[0064] The sliding path of the slider 42 on the linear guide rail 41 is located below the test actuator and extends from one side of the test actuator to the other. Specifically, the length of the sliding path is designed to cover the entire travel of the support platform 31 from the first position to the second position, and the middle section of the path is directly below the test actuator (i.e., the working position). Specifically, the center section of the sliding path is aligned with the vertical axis of the test actuator, forming the working position; the two ends of the path extend beyond one side and the other side of the test actuator, respectively, forming pick-up and place-down positions. When the support platform 31 moves, the first station 32 can selectively extend to one side of the test actuator (e.g., the left side of the equipment), while the second station 33 can selectively extend to the other side of the test actuator (e.g., the right side of the equipment). This extension design allows the stations to be completely moved out of the coverage area of ​​the test actuator when not in operation, facilitating pick-up and place-down operations by the operator.

[0065] When the first station 32 extends to one side of the test actuator, it is in the other pick-and-place position. At this time, the first station 32 is away from the work position, allowing the operator to safely pick up and place the fan blade nest 100 from one side of the equipment, while the second station 33 is located below the work position for strength testing. Correspondingly, when the second station 33 extends to the other side of the test actuator, it is in the first pick-and-place position. At this time, the second station 33 moves to the other side of the equipment for the operator to perform pick-and-place operations, while the first station 32 is aligned with the work position.

[0066] By setting up the guide rail assembly 40, this device not only ensures the accuracy and reliability of the movement of the platform 31, but also makes full use of the space below the test actuator, achieving a compact equipment layout and supporting parallel operation of two stations, further improving testing efficiency and the overall reliability of the device.

[0067] In one embodiment, the drive assembly 50 includes a station cylinder 51 and a second solenoid valve 52; the drive end of the station cylinder 51 is fixedly connected to the base 34, and the second solenoid valve 52 is connected to the air passage of the station cylinder 51.

[0068] like Figure 6 As shown, in this embodiment, the drive assembly 50 includes a station cylinder 51 and a second solenoid valve 52.

[0069] The station cylinder 51 is a pneumatic actuator. Its cylinder body is fixedly mounted on the base 10, and the extension direction of its drive end is parallel to the extension direction of the linear slide rail 41. The drive end of the station cylinder 51 is fixedly connected to the base 34. Specifically, when the drive end of the station cylinder 51 extends, it pushes the base 34 (along with the slider 42 and test tray on it) to move in one direction along the linear slide rail 41; when the drive end retracts, it pulls the base 34 to move in the opposite direction. By controlling the extension and retraction stroke of the drive end of the station cylinder 51, the support platform 31 can be switched between a first position and a second position. For example, when the drive end is fully extended, the support platform 31 is in the first position; when the drive end is fully retracted, the support platform 31 is in the second position.

[0070] The second solenoid valve 52, in this embodiment, can specifically be a station solenoid valve, which is connected to the air passage of the station cylinder 51 and is used to control the movement of the station cylinder 51. The second solenoid valve 52 receives electrical signals from the control system and controls compressed air to enter different air chambers of the station cylinder 51 according to the signal commands, thereby controlling the extension or retraction of its drive end. For example, when the control system issues a command to switch to the first position, the second solenoid valve 52 reverses, allowing compressed air to enter one side of the station cylinder 51 and driving it to extend; when a command to switch to the second position is issued, the second solenoid valve 52 reverses again, allowing compressed air to enter the other side and driving it to retract.

[0071] By employing a station cylinder 51 and a second solenoid valve 52 as the drive component 50, this device achieves automated control of station switching actions. This pneumatic drive method has advantages such as fast response speed, simple structure, stable operation, and convenient maintenance. It can ensure that the bearing platform 31 switches between two positions quickly and smoothly, thereby ensuring the continuity and efficiency of the testing process and meeting the reliability requirements of industrial production.

[0072] In one embodiment, the guide rail assembly 40 further includes a connecting frame 43, which is fixedly connected to the drive end of the work position cylinder 51. The base 34 is provided with a limiting groove 44, and the connecting frame 43 passes through the limiting groove 44 to fixally connect the drive end of the work position cylinder 51 and the base 34.

[0073] like Figure 5 As shown, in this embodiment, the guide rail assembly 40 further includes a connecting frame 43, and the base 34 is provided with a corresponding limiting groove 44.

[0074] The connecting frame 43 is a rigid connecting member, one end of which is fixedly connected to the drive end of the work position cylinder 51, and it can extend and retract together with the drive end.

[0075] The base 34 is provided with a limiting groove 44. The limiting groove 44 is a through groove formed on the base 34, the shape and size of which are adapted to the other end of the connecting frame 43. In this embodiment, the limiting groove 44 can be designed as a strip groove that runs through the base 34, the length direction of which is perpendicular to the movement direction of the support platform 31, and the width direction which matches the thickness of the connecting frame 43.

[0076] During assembly, the connecting bracket 43 passes through the limiting groove 44 to achieve a fixed connection between the drive end of the station cylinder 51 and the base 34. Specifically, the connecting bracket 43 passes through the limiting groove 44 to achieve the connection between the two. This through-type connection method uses the side wall of the limiting groove 44 to limit the position of the connecting bracket 43, ensuring that the thrust or pull force of the station cylinder 51 can accurately act on the predetermined position of the base 34.

[0077] By adding a connecting frame 43 and a limiting groove 44, this device achieves an extremely convenient connection between the drive end of the work position cylinder 51 and the base 34. Only an interlocking action is required without the need for other fixing structures, which simplifies the assembly process.

[0078] In one embodiment, the device further includes a controller 60, which is electrically connected to the strength testing mechanism 20 and the workstation switching mechanism 30, respectively. The controller 60 is used to control the drive assembly 50 to drive the support platform 31 to switch workstations and to control the strength testing mechanism 20 to apply the preset test force. The controller 60 includes a power module, a PLC, and a start switch 63. The PLC is connected to the start switch 63 and is used to receive signals from the start switch 63 and control the operation of the strength testing mechanism 20 and the workstation switching mechanism 30. The controller 60 also includes an emergency stop switch 64 for emergency stopping of the device.

[0079] like Figure 6 As shown, in this embodiment, the device further includes a controller 60. The controller 60 serves as a control system and is electrically connected to both the strength testing mechanism 20 and the workstation switching mechanism 30, forming the control core of the entire device.

[0080] The controller 60 controls the drive assembly 50 to drive the support platform 31 to switch positions and controls the strength testing mechanism 20 to apply the preset test force. Specifically, the controller 60 sends an electrical signal to the second solenoid valve 52 (position solenoid valve) to control the movement of the position cylinder 51, thereby driving the support platform 31 to switch between the first and second positions. At the same time, the controller 60 also sends an electrical signal to the first solenoid valve 25 (pressurization solenoid valve) to control the pressing and resetting actions of the compression cylinder 23, thereby applying the preset test force to the fan blade nest 100 and maintaining the pressure for a preset time.

[0081] In one specific embodiment, the controller 60 includes a power supply module, a PLC (Programmable Logic Controller), and a start switch 63. The power supply module provides a stable and reliable DC power supply to the entire controller 60 and its connected electrical components (such as the PLC, solenoid valves, etc.). The PLC is the processing unit of the controller 60, and its internal circuitry is pre-programmed with the test logic and workflow of the entire device. The PLC is connected to the start switch 63 and receives the start signal from the start switch 63. When the operator presses the start switch 63, the PLC receives the signal and, according to the preset program sequence, controls the corresponding actions of the strength testing mechanism 20 and the station switching mechanism 30 sequentially or in parallel. For example, the PLC controls the station cylinder 51 to move a station to the working position, then controls the compression cylinder 23 to press down for testing, holds the pressure for a specified time, and then resets. The PLC then controls the station cylinder 51 to switch to another station, repeating the test process to achieve a fully automated test cycle.

[0082] In addition, to ensure operational safety, the controller 60 also includes an emergency stop switch 64. This emergency stop switch 64 is connected to the emergency stop input of the PLC or directly connected in series in the main power control circuit. Under any circumstances, once the operator presses the emergency stop switch 64, the controller 60 will immediately cut off the power supply to all actuators (such as the compression cylinder 23 and the station cylinder) or stop their operation, thereby urgently stopping the operation of the device, effectively preventing accidents and ensuring the safety of the operator and equipment.

[0083] Through the configuration of the controller 60, this device achieves automation and high security in the testing process, reduces manual intervention, improves the consistency and efficiency of testing, and makes the entire testing process more standardized and reliable.

[0084] like Figure 7 As shown, corresponding to the above-mentioned wind turbine blade nesting mechanical strength testing device, this embodiment of the invention also provides a wind turbine blade nesting 100 mechanical strength testing method, which is implemented by using the wind turbine blade nesting mechanical strength testing device described in the aforementioned embodiment. The core of this method lies in converting the waiting time for test pressure holding into effective material handling time through the collaborative work of two workstations, thereby realizing parallel processing of testing and material handling, greatly improving the overall testing efficiency. The method includes the following steps S1-S7. Before starting the test, the operator first selects and installs a test tray 35 that matches the shape of the wind turbine blade nesting 100 to be tested according to its specifications. Then, the power supply and air supply of the device are turned on. By adjusting the pressure regulating valve 26 in the strength testing mechanism 20, the working air pressure of the extrusion cylinder 23 is set to a preset value to ensure that the test head 24 can apply an accurate preset test force.

[0085] The specific steps for implementing this method are as follows: S1. Place the first test blade nest 100 on the first work station 32.

[0086] Specifically, the operator places the first batch of test blades nested 100 (e.g., two) into the first groove group 36 of the first station 32 on the support platform 31. At this time, the support platform 31 is in the second position, and the first station 32 is in another convenient position for operation.

[0087] S2. Drive the support platform 31 to the first position, so that the first workstation 32 is located in the working position, and at the same time, the second workstation 33 is located in the first pick-up and put-down position.

[0088] Specifically, the operator presses the start switch 63. After receiving the start signal, the controller 60 (PLC) controls the second solenoid valve 52 to drive the station cylinder 51 to move smoothly from the second position to the first position. In this position, the first station 32 on the station 31 is aligned with the working position directly below the strength testing mechanism 20, while the second station 33 moves to a pick-up / placement position on the other side of the equipment.

[0089] S3. Control the strength testing mechanism 20 to apply a preset test force to the first test blade nest 100 on the first station 32.

[0090] Specifically, after the support platform 31 is positioned, the controller 60 (PLC) immediately controls the first solenoid valve 25 to drive the drive end of the extrusion cylinder 23 to extend, thereby driving the test head 24 to press down vertically, applying a preset test force to the first batch of test blade nests 100 on the first station 32, and starting the timing and pressure holding, for example, holding the pressure for 5 seconds.

[0091] S4. During the testing of the first wind blade nest 100 to be tested, the second wind blade nest 100 to be tested is placed on the second workstation 33 at the first pick-up and put-down position.

[0092] Specifically, during the 5 seconds that the strength testing mechanism 20 performs the pressure holding test on the first batch of fan blade nests 100, the device and workpiece are in a waiting state. During this time, the operator places the second batch of fan blade nests 100 to be tested into the second groove group 37 of the second station 33, which is in a pick-and-place position. This step is performed synchronously with the testing process in step three, achieving efficient use of time.

[0093] S5. After the test of the first test blade nest 100 is completed, drive the support platform 31 to move to the second position, so that the second work station 33 is located in the working position, and at the same time, the first work station 32 is located in the other pick-up and put-down position.

[0094] Specifically, after the pressure holding time ends, the controller 60 (PLC) controls the first solenoid valve 25 to reset the extrusion cylinder 23, causing the test head 24 to detach from the workpiece. At this time, the controller 60 drives the station cylinder 51 to move the support platform 31 from the first position to the second position. Now, the second station 33, carrying the second batch of test-bearing blade nests 100, moves to the working position, while the first station 32, which has completed the test, moves to another pick-and-place position.

[0095] S6. Control the strength testing mechanism 20 to apply a preset test force to the second test blade nest 100 on the second station 33.

[0096] Specifically, the controller 60 repeats the action of step S3, that is, the control strength testing mechanism 20 applies the same preset test force to the second batch of fan blade nests 100 located at the second work station 33 in the working position and maintains the pressure.

[0097] S7. During the testing of the second test blade nest 100, the tested first test blade nest 100 is removed from the first station 32, which is in the other pick-up and put-down position.

[0098] Specifically, during the pressure holding test of the second batch of fan blade nests 100, the operator, at the pick-up and drop position on the other side, removes the first batch of fan blade nests 100 that have been tested from the first station 32, and can directly insert a new batch of fan blade nests 100 to be tested, preparing for the next cycle. This step is performed synchronously with the testing process in step S6.

[0099] By continuously repeating steps S2 to S7, a continuous and efficient full mechanical strength inspection of a large number of nested fan blades (100) can be achieved. Throughout the process, the testing action and material handling actions are seamlessly connected, eliminating the idle waiting time in traditional single-station testing and significantly shortening the testing cycle.

[0100] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in the present invention, and these modifications or substitutions should all be covered within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A device for testing the mechanical strength of nested wind turbine blades, characterized in that, The system includes a base, on which a strength testing mechanism and a workstation switching mechanism are provided; the strength testing mechanism is used to apply a preset test force to the fan blade nest located in a working position on the workstation switching mechanism. The workstation switching mechanism includes: A support platform, wherein the support platform is provided with a first workstation and a second workstation, for respectively supporting the nested fan blades; A guide rail assembly, wherein the support platform is mounted on the guide rail assembly, and the guide rail assembly is used to guide the support platform to move along a preset path; and A drive component, which is connected to the support platform, is used to drive the support platform to reciprocate between a first position and a second position on the preset path; Wherein, when the support platform is in the first position, the first workstation is located in the working position, and the second workstation is located in a pick-and-place position; when the support platform is in the second position, the second workstation is located in the working position, and the first workstation is located in another pick-and-place position.

2. The wind turbine blade nesting mechanical strength testing device according to claim 1, characterized in that, The strength testing mechanism includes a test actuator and a support; the test actuator includes a compression cylinder and a test head located at the drive end of the compression cylinder, and the compression cylinder is fixed to the base by the support.

3. The wind turbine blade nesting mechanical strength testing device according to claim 2, characterized in that, The strength testing mechanism further includes a first solenoid valve and a pressure regulating valve; the first solenoid valve and the pressure regulating valve are respectively connected to the air circuit of the extrusion cylinder.

4. The wind turbine blade nesting mechanical strength testing device according to claim 2, characterized in that, The support platform includes a base and a test tray detachably mounted on the base; the base is connected to the guide rail assembly, and the test tray is provided with a first workstation and a second workstation arranged sequentially along the preset path.

5. The wind turbine blade nesting mechanical strength testing device according to claim 4, characterized in that, The test tray has a first groove group and a second groove group arranged sequentially along the preset path. The groove shapes in the first groove group and the second groove group are adapted to the shape of the nested fan blades. The first groove group and the second groove group respectively form the first workstation and the second workstation.

6. The wind turbine blade nesting mechanical strength testing device according to claim 4, characterized in that, The top surface of the base is provided with a receiving groove, and the test tray is embedded in the receiving groove; the inner contour of the receiving groove is adapted to the outer contour of the test tray to limit the horizontal movement of the test tray.

7. The wind turbine blade nesting mechanical strength testing device according to claim 4, characterized in that, The guide rail assembly includes a linear slide rail and a slider; the linear slide rail is fixed to the base, the slider slides in cooperation with the linear slide rail and is fixedly connected to the base; the sliding path of the slider on the linear slide rail is located below the test actuator and extends from one side of the test actuator to the other side, so that the first station can selectively extend to one side of the test actuator and the second station can selectively extend to the other side of the test actuator; Wherein, when the first station extends out of one side of the test actuator, the first station is located in the other pick-and-place position; when the second station extends out of the other side of the test actuator, the second station is located in the first pick-and-place position.

8. The wind turbine blade nesting mechanical strength testing device according to claim 7, characterized in that, The drive assembly includes a station cylinder and a second solenoid valve; the drive end of the station cylinder is fixedly connected to the base, and the second solenoid valve is connected to the air passage of the station cylinder.

9. The wind turbine blade nesting mechanical strength testing device according to claim 8, characterized in that, The guide rail assembly also includes a connecting frame, which is fixedly connected to the drive end of the workstation cylinder. The base is provided with a limiting groove, and the connecting frame passes through the limiting groove to fixally connect the drive end of the workstation cylinder and the base.

10. A method for testing the mechanical strength of nested wind turbine blades, applied to the wind turbine blade nested mechanical strength testing device as described in any one of claims 1 to 9, characterized in that, The testing method includes the following steps: The first wind vane to be tested is nested and placed in the first workstation; Drive the support platform to move to the first position, so that the first workstation is located in the working position, and at the same time, the second workstation is located in the pick-up and put-down position; The strength testing mechanism is controlled to apply a preset test force to the first test blade nested on the first station; During the testing of the first wind blade nest, the second wind blade nest is placed on the second workstation at the first pick-and-place position; After the test of the first nested wind blade is completed, the carrier platform is driven to move to the second position, so that the second work station is located in the working position, and the first work station is located in the other pick-up and put-down position. The strength testing mechanism is controlled to apply a preset test force to the second test blade nested on the second station; and During the testing of the second wind blade nest to be tested, the first wind blade nest to be tested that has been tested is removed from the first station which is in the other pick-and-place position.

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