Paddle static strength testing device

Abstract

The invention relates to the technical field of helicopter blade testing, in particular to a blade static strength testing device which comprises a frame body, a fixing assembly, a transverse force application part and a longitudinal force application part. The transverse force application component is used for providing transverse acting force to the blades and simulating centrifugal force borne by the blades, the longitudinal force application component is used for providing longitudinal acting force to the blades and simulating lift force borne by the blades, and when the transverse force application component and the longitudinal force application component are driven at the same time, the stress condition of the blades in the actual use process can be simulated; the centrifugal force and the lift force which can be borne by the paddle are tested, so that the strength of the paddle is judged, the safety problem caused by insufficient strength in the use process of the paddle is avoided, and the reliability of the paddle is improved.

Description

Technical Field

[0001] This application relates to the field of helicopter rotor blade testing technology, and in particular to a rotor blade static strength testing device. Background Technology

[0002] After helicopter rotor blades are manufactured, they need to undergo strength testing to prevent safety issues caused by insufficient strength. During use, rotor blades are primarily subjected to centrifugal force and lift. Currently, strength testing is conducted using a tensile testing machine. This method can only measure the magnitude of the centrifugal force the blade can withstand, not the lift. Furthermore, the centrifugal force and lift experienced by the rotor blade during use are generated simultaneously; applying these two forces separately during testing cannot simulate the stress conditions during actual use. Summary of the Invention

[0003] This application provides a blade static strength testing device to solve the problem that the prior art can only test the magnitude of the centrifugal force that the blade can withstand, but cannot simulate the centrifugal force and lift that the blade is subjected to simultaneously during use.

[0004] This application provides a blade static strength testing device, comprising: a frame having an installation area for mounting the blade; a fixing component disposed on the frame, the fixing component being configured to fix the blade in the installation area; a lateral force-applying component capable of being driven to apply a lateral force to the blade; and a longitudinal force-applying component capable of being driven to apply a longitudinal force to the blade.

[0005] Preferably, the frame includes a fixed frame and a movable frame movably disposed relative to the fixed frame. The fixing component is configured to connect the blade root to the fixed frame and the blade tip to the movable frame. The lateral force-applying component can be driven to apply force to the blade tip through the movable frame, and the longitudinal force-applying component can be driven to apply force to the blade tip through the fixed component.

[0006] Preferably, the frame also includes a base, a fixing frame is connected to the base, and the longitudinal force-applying member has a first fixed end disposed on the base and a first movable end disposed on the fixing assembly. The longitudinal force-applying member can be driven to apply a downward force to the tip of the blade through the fixing assembly.

[0007] Preferably, the longitudinal force-applying member is formed in a telescopic form.

[0008] Preferably, the lateral force-applying member has a second fixed end disposed on the fixed frame and a second movable end disposed on the movable frame, and the lateral force-applying member can be driven to apply a lateral force away from the blade root to the blade tip through the movable frame.

[0009] Preferably, the lateral force-applying members are formed in a telescopic form and are provided in multiple forms, with at least two lateral force-applying members provided on opposite sides of the fixed assembly.

[0010] Preferably, the fixing components include a tip fixing member and a root fixing member, both located within the installation area. The tip fixing member is connected to the movable frame, and the root fixing member is connected to the fixed frame.

[0011] Preferably, the tip fixing member includes a mounting block having a mounting groove for inserting the blade tip, and the root fixing member includes a clamping block having a clamping groove for inserting the blade root.

[0012] Preferably, the mounting block also has a first fixing hole communicating with the mounting groove, the tip fixing member also includes a second fixing rod passing through the first fixing hole into the mounting groove, the clamping block also has a plurality of second fixing holes communicating with the clamping groove, at least two of the second fixing holes being coaxially arranged, and the root fixing member also includes a second fixing rod passing through one of the second fixing holes into another coaxial second fixing hole.

[0013] Preferably, the blade static strength testing device further includes a lateral force sensor and a longitudinal force sensor disposed on the fixed component to detect the lateral force applied to the blade by the lateral force-applying component and the longitudinal force applied to the blade by the longitudinal force-applying component.

[0014] The beneficial effects of this application are as follows: The lateral force-applying component provides lateral force to the blades, simulating the centrifugal force acting on the blades. The longitudinal force-applying component provides longitudinal force to the blades, simulating the lift acting on the blades. When the lateral and longitudinal force-applying components are driven simultaneously, the stress conditions of the blades during actual use can be simulated, and the magnitude of the centrifugal force and lift that the blades can withstand can be tested. This allows for the determination of the blade strength, preventing safety issues caused by insufficient blade strength during use and improving the reliability of the blades. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the specific embodiments of this application or the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0016] Figure 1 A perspective view of the blade static strength testing device and blade assembly provided in the embodiments of this application; Figure 2 for Figure 1 A magnified view of part A in the image; Figure 3 for Figure 1 A stereoscopic view from another perspective; Figure 4 for Figure 1 Another perspective of the stereoscopic view; Figure 5 for Figure 4 A magnified view of part B in the image; Figure 6 for Figure 1 A perspective view of the frame of the medium-sized blade static strength testing device; Figure 7 for Figure 6 A stereoscopic view from another perspective; Figure 8 for Figure 1 A three-dimensional view of the mounting components of the medium-sized blade static strength testing device and their fit with the blade; and Figure 9 for Figure 8 A three-dimensional view of the fixed components.

[0017] Figure label: 10. Frame; 11. Fixed frame; 111. Fixed frame; 112. Connecting beam; 113. First reinforcing rod; 114. Reinforcing frame; 115. Second reinforcing rod; 116. Reinforcing beam; 12. Movable frame; 121. Movable frame; 122. Mounting plate; 13. Base; 20. Fixed assembly; 21. Tip fixing piece; 211. Mounting block; 2111. Mounting groove; 212. First fixing rod; 22. Root fixing piece; 221. Clamping block; 2211. Clamping groove; 222. Second fixing rod; 30. Lateral force application piece; 40. Longitudinal force application piece; 50. Lateral force sensor; 60. Longitudinal force sensor; 9. Blade. Detailed Implementation

[0018] The technical solutions of this application will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0019] The following is combined with Figures 1 to 9 This application describes a blade static strength testing device, comprising: a frame 10 having an installation area for mounting blades 9; a fixing component 20 disposed on the frame 10, the fixing component 20 being configured to fix the blades 9 within the installation area; a lateral force-applying component 30 being drivable to apply a lateral force to the blades 9; and a longitudinal force-applying component 40 being drivable to apply a longitudinal force to the blades 9.

[0020] The rotor blade 9 is fixed to the frame 10 by the fixing component 20. A lateral force is applied to the rotor blade 9 by the lateral force-applying component 30 to detect the magnitude of the centrifugal force that the rotor blade 9 can withstand. A longitudinal force-applying component 40 applies a longitudinal force to the rotor blade 9 to detect the magnitude of the lift that the rotor blade 9 can withstand. During the test, the lateral force-applying component 30 and the longitudinal force-applying component 40 are operated simultaneously to simulate the centrifugal force and lift that the rotor blade 9 experiences during helicopter ascent and rotation. If the lateral force applied to the rotor blade 9 by the lateral force-applying component 30 is greater than the maximum centrifugal force that the rotor blade 9 may withstand during use, and the longitudinal force applied to the rotor blade 9 by the longitudinal force-applying component 40 is greater than the maximum lift that the rotor blade 9 may withstand during use, then the strength of the rotor blade 9 meets the requirements. Conversely, if the lateral force applied to the rotor blade 9 is greater than the maximum lift that the rotor blade 9 may withstand during use, then the strength of the rotor blade 9 meets the requirements and cannot be put into use. The rotor blade static strength testing device of this application can prevent safety problems caused by insufficient strength of the rotor blade 9 during use and improve the reliability of the rotor blade 9.

[0021] Please refer to Figure 1 , Figure 3 , Figure 4 , Figure 6 and Figure 7 ,in, Figure 1 , Figure 3 and Figure 4 All images are perspective views of the blade static strength testing device and blade 9 provided in the embodiments of this application. Figure 6 and Figure 7 A perspective view of the frame 10 of the blade static strength testing device provided in the embodiments of this application.

[0022] In some embodiments provided in this application, the frame 10 includes a fixed frame 11 and a movable frame 12 that is movably disposed relative to the fixed frame 11. The fixing component 20 is configured to connect the root of the blade 9 to the fixed frame 11 and the tip of the blade 9 to the movable frame 12. The lateral force-applying component 30 can be driven to apply force to the blade tip through the movable frame 12, and the longitudinal force-applying component 40 can be driven to apply force to the blade tip through the fixing component 20.

[0023] The fixed frame 11 is used to fix the root of the blade 9, and the movable frame 12 is used to transmit the force of the lateral force-applying component 30. Specifically, the movable frame 12 moves laterally under the action of the lateral force-applying component 30, causing the blade tip of the blade 9 to move laterally relative to the blade root, so as to simulate the centrifugal force experienced by the blade 9 during use. The fixed component 20 moves longitudinally under the action of the longitudinal force-applying component 40, causing the blade tip of the blade 9 to move longitudinally, so as to simulate the lift force experienced by the blade 9 during use.

[0024] Specifically, such as Figure 6 and Figure 7As shown, the base 13 is a rectangular frame structure, placed horizontally or fixed to the ground or workbench with screws. The fixing frame 11 is connected to the base 13. The fixing frame 11 includes a fixing frame 111, a connecting beam 112, a first reinforcing rod 113, a reinforcing frame 114, a second reinforcing rod 115, and a reinforcing beam 116. The fixing frame 111 is vertically fixed to the base 13 and forms a rectangular frame structure. The connecting beam 112 is horizontally fixed inside the fixing frame 111 and is used to connect the root fixing member 22 of the fixing assembly 20 (described in detail later). The first reinforcing rod 113 connects the fixing frame 111 and the base 13 and is inclined. The first reinforcing rod 113, the fixing frame 111, and the base 13 form a triangle, which provides strong stability. The first reinforcing rod 113 is set parallel to the base 13. Two reinforcing rods are provided to enhance stability. The reinforcing frame 114 is formed into a cuboid frame and fixed to the base 13. One side of the frame is connected to the fixed frame 111 to increase the stability of the fixed frame 111. It can share the force applied to the root fixing member 22 by the lateral force-applying member 30 during the test and prevent the fixed frame 111 from deforming due to excessive force. The second reinforcing rod 115 connects the reinforcing frame 114 and the connecting beam 112 and is set at an angle. The two second reinforcing rods 115 are set in parallel to increase the stability of the connecting beam 112 during the stress process. The reinforcing beam 116 is fixed inside the base 13 and located directly below the reinforcing frame 114. The reinforcing beam 116 is also placed or fixed to the ground or workbench by screws to increase the stability of the entire frame 10 fixed to the ground or workbench. The movable frame 12 includes a movable frame 121 and a mounting plate 122. The movable frame 121 is vertically arranged and forms a rectangular frame structure. The mounting plate 122 is fixed to the side of the movable frame 121 away from the fixed frame 11 to reinforce the movable frame 121. The lateral force-applying member 30 and the tip fixing member 21 of the fixing component 20 (described in detail later) are both connected to the movable frame 12, so that the lateral force-applying member 30 can transmit the force through the movable frame 12 to the tip fixing member 21, and then through the tip fixing member 21 to the tip of the blade 9. The mounting area is the area between the fixed frame 111 of the fixed frame 11 and the movable frame 12.

[0025] Please continue reading. Figure 1 , Figure 3 , Figure 4 , Figure 6 and Figure 7 In some embodiments provided in this application, the frame 10 further includes a base 13, a fixing frame 11 is connected to the base 13, and a longitudinal force-applying member 40 has a first fixed end disposed on the base 13 and a first movable end disposed on the fixing component 20. The longitudinal force-applying member 40 can be driven to apply a downward force to the tip of the blade 9 through the fixing component 20.

[0026] The base 13 is fixed to the ground or workbench, the fixing frame 11 is fixed relative to the base 13, the first fixed end of the longitudinal force-applying member 40 is also fixed relative to the base 13, and the first movable end moves vertically relative to the first fixed end to apply a longitudinal downward force to the tip of the blade 9. Since the lift force on the blade 9 during use is longitudinal downward, the longitudinal force-applying member 40 applies a force in the same direction to the blade 9 to simulate the lift force on the blade 9 during use, thereby testing whether the blade 9 can withstand the maximum lift force.

[0027] Please refer to Figure 3 and Figure 4 In some embodiments provided in this application, the longitudinal force-applying member 40 is formed in a telescopic form.

[0028] The longitudinal force-applying component 40 shortens, causing the tip of the blade 9 to move downwards, simulating the lift force experienced by the blade 9 during operation. The blade tip of the blade 9 can withstand the smallest force; therefore, by placing the longitudinal force-applying component 40 at the tip, if the tip can withstand the maximum lift force during blade 9 operation, then the other parts of the blade 9 can also withstand the same lift force. The longitudinal force-applying component 40 applies force to the blade tip through extension and retraction, which not only accurately detects whether the blade 9 can withstand the maximum lift force but also reduces structural complexity, avoiding the need for a complex structure that occupies a large amount of space.

[0029] Specifically, the longitudinal force-applying component 40 can be a pneumatic cylinder or a hydraulic cylinder, etc. Figure 4 The orientation shown is described as follows: the first fixed end of the longitudinal force-applying member 40 is its bottom end, which is connected to the base 13 of the frame 10; the first movable end of the longitudinal force-applying member 40 is its top end, which is connected to the tip fixing member 21 of the fixing component 20.

[0030] Please refer to Figure 1 , Figure 3 and Figure 4 In some embodiments provided in this application, the lateral force-applying member 30 has a second fixed end disposed on the fixed frame 11 and a second movable end disposed on the movable frame 12. The lateral force-applying member 30 can be driven to apply a lateral force away from the blade root to the blade tip of the blade 9 through the movable frame 12.

[0031] The second fixed end of the lateral force-applying member 30 is fixed relative to the base 13 and the fixing frame 11, and the second movable end moves horizontally relative to the second fixed end to apply lateral force. Figure 3 The force applied by the transverse force-applying member 30 (extending to the left) is applied to the tip of the blade 9. Since the centrifugal force experienced by the blade 9 during use is from the root to the tip, the transverse force-applying member 30 applies a force in the same direction to the blade 9 to simulate the centrifugal force experienced by the blade 9 during use, thereby testing whether the blade 9 can withstand the maximum centrifugal force.

[0032] Please continue reading. Figure 1 , Figure 3 and Figure 4 In some embodiments provided in this application, the lateral force-applying member 30 is formed in a telescopic form and is configured as a plurality of them, with at least two lateral force-applying members 30 disposed on opposite sides of the fixing component 20.

[0033] The lateral force-applying component 30 extends, causing the tip of the blade 9 to move horizontally away from the root, simulating the centrifugal force experienced by the blade 9 during use. During rotation, the blade tip experiences the greatest centrifugal force. Therefore, by applying force to the blade tip through the lateral force-applying component 30, if the blade tip can withstand the maximum centrifugal force, then the other parts of the blade 9 can also withstand the centrifugal force generated during rotation. The lateral force-applying component 30 applies force to the blade tip through extension and retraction, which not only accurately tests whether the blade 9 can withstand the maximum centrifugal force but also reduces structural complexity, avoiding the need for a complex structure that occupies a large amount of space.

[0034] Two transverse force-applying components 30 can be set. When the two transverse force-applying components 30 extend at the same time, the fixed component 20 is subjected to the same force on both sides, thereby making the blade 9 subjected to balanced force.

[0035] Specifically, the lateral force-applying component 30 can be a pneumatic cylinder or a hydraulic cylinder, etc. Figure 3 The orientation shown is described as follows: the second fixed end of the transverse force-applying member 30 is its right end, which is connected to the fixed frame 11 of the frame 10; the second movable end of the transverse force-applying member 30 is its left end, which is connected to the movable frame 12 of the frame 10.

[0036] As the lateral force-applying component 30 extends, the longitudinal force-applying component 40 shortens, simulating the centrifugal force and lift force simultaneously experienced by the blade 9 during use. Since both the lateral force-applying component 30 and the longitudinal force-applying component 40 act on the blade tip, to avoid interference between them, one end of the lateral force-applying component 30 is hinged to the fixed frame 111 of the fixed frame 11 of the frame 10, and the other end is hinged to the movable frame 12 of the frame 10. One end of the longitudinal force-applying component 40 is hinged to the tip fixing component 21 of the fixed component 20, and the other end is hinged to the base 13 of the frame 10. In this way, the extension of the lateral force-applying component 30 will not interfere with the shortening of the longitudinal force-applying component 40, and similarly, the shortening of the longitudinal force-applying component 40 will not interfere with the extension of the lateral force-applying component 30.

[0037] Please refer to Figure 8 and Figure 9 ,in, Figure 8 This is a perspective view of the fixing component 20 of the blade static strength testing device provided in the embodiments of this application, in conjunction with the blade 9. Figure 9 This is a perspective view of the fixed component 20.

[0038] In some embodiments provided in this application, the fixing component 20 includes a tip fixing member 21 and a root fixing member 22, both of which are located in the installation area. The tip fixing member 21 is connected to the movable frame 12, and the root fixing member 22 is connected to the fixing frame 11.

[0039] The tip fixing member 21 and the root fixing member 22 are separated. The tip fixing member 21 is used to connect the tip of the blade 9 to the movable frame 12 of the frame 10, and the root fixing member 22 is used to connect the root of the blade 9 to the fixed frame 11 of the frame 10. In this way, the root of the blade 9 can be fixed relative to the base 13, and the tip of the blade 9 is subjected to force under the action of the lateral force-applying member 30 and the longitudinal force-applying member 40. Furthermore, the tip fixing member 21 is designed according to the blade tip structure of the blade 9 to fit the blade tip and avoid damage to the blade tip. Similarly, the root fixing member 22 is designed according to the blade root structure of the blade 9 to fit the blade root and avoid damage to the blade root.

[0040] Please continue reading. Figure 8 and Figure 9 In some embodiments provided in this application, the tip fixing member 21 includes a mounting block 211, which has a mounting groove 2111 for inserting the tip of the blade 9, and the root fixing member 22 includes a clamping block 221, which has a clamping groove 2211 for inserting the root of the blade 9.

[0041] The blade tip of the blade 9 is placed in the mounting groove 2111 and the blade root is placed in the clamping groove 2211. On the one hand, this can protect the blade tip and blade root. On the other hand, it can increase the contact area between the mounting block 211 and the blade tip and the contact area between the clamping block 221 and the blade root, thereby increasing the stability of the blade 9 connection and preventing the blade 9 from falling off the fixing assembly 20 when subjected to the forces of the lateral force-applying member 30 and the longitudinal force-applying member 40.

[0042] Specifically, such as Figure 9 As shown, the mounting block 211 is formed as a hollow box structure with a mounting groove 2111 inside. The clamping block 221 includes two plate-like structures, which are spaced apart and a clamping groove 2211 is formed between them.

[0043] Please continue reading. Figure 8 and Figure 9 In some embodiments provided in this application, the mounting block 211 also has a first fixing hole communicating with the mounting groove 2111, the tip fixing member 21 also includes a second fixing rod 222 passing through the first fixing hole into the mounting groove 2111, the clamping block 221 also has a plurality of second fixing holes communicating with the clamping groove 2211, at least two of the second fixing holes are coaxially arranged, and the root fixing member 22 also includes a second fixing rod 222 passing through one of the second fixing holes into another coaxial second fixing hole.

[0044] The tip of the blade 9 is inserted into the mounting groove 2111, and the first fixing rod 212 passes through the first fixing hole until the bottom end of the first fixing rod 212 abuts against the upper surface of the blade tip of the blade 9, fixing the blade tip to the mounting block 211; the blade root of the blade 9 has a mounting hole for connecting the helicopter shaft. When the blade root is inserted into the clamping groove 2211, the second fixing hole is coaxial with the mounting hole, and the second fixing rod 222 passes through the second fixing hole into the mounting hole, fixing the blade root of the blade 9 to the clamping block 221.

[0045] Specifically, the first fixing hole can be a screw hole, and the first fixing rod 212 can be a screw rod, which is screwed into the first fixing hole. The second fixing hole can be a round hole, and the second fixing rod 222 can be a screw rod, which passes through the two coaxial second fixing holes and is then locked onto the clamping block 221 by a nut.

[0046] The first fixing hole and the first fixing rod 212 are configured to correspond one-to-one with multiple first fixing holes. Multiple first fixing holes are arranged in a matrix on the mounting block 211. Each first fixing rod 212 passes through a first fixing hole and abuts against the tip of the blade 9, increasing the stability of the connection between the tip of the blade 9 and the mounting block 211. Two coaxial second fixing holes are formed on the upper and lower plate-like structures of the clamping block 221, respectively. The two coaxial second fixing holes are a group. The clamping block 221 is provided with multiple groups of second fixing holes. Multiple second fixing rods 222 are provided. Each second fixing rod 222 corresponds to a group of second fixing holes. Multiple mounting holes are opened on the blade root of the blade 9. Each group of second fixing holes corresponds to a mounting hole of the blade root. When the blade root of the blade 9 is located in the clamping groove 2211 of the clamping block 221, a second fixing rod 222 passes through one second fixing hole, one mounting hole of the blade root and another second fixing hole in the group in sequence. Its bottom end protrudes from the bottom of the clamping block 221. The nut is tightened at the bottom end of the second fixing rod 222 to fix the blade root of the blade 9 to the clamping block 221.

[0047] Please refer to Figure 2 and Figure 5 ,in, Figure 2 The display shows the lateral force sensor 50. Figure 5 The image shows a longitudinal force sensor 60.

[0048] In some embodiments provided in this application, the blade static strength testing device further includes a lateral force sensor 50 and a longitudinal force sensor 60 disposed on the fixed component 20 to detect the lateral force applied to the blade 9 by the lateral force application component 30 and the longitudinal force applied to the blade 9 by the longitudinal force application component 40.

[0049] The lateral force-applying component 30 applies a lateral force to the movable frame 12, which then applies it to the tip fixing component 21, and finally to the tip of the blade 9. The lateral force sensor 50 is fixed between the movable frame 12 and the tip fixing component 21 to detect the magnitude of the lateral force applied by the lateral force-applying component 30. The lateral force-applying component 30 is operated based on the value detected by the lateral force sensor 50 to ensure that the applied force is greater than or equal to the maximum centrifugal force that the blade 9 may experience during use, and to observe whether the blade 9 can withstand the force of that value. The longitudinal force-applying component 40 applies a longitudinal force to the tip fixing component 21, which in turn applies it to the tip of the blade 9. The longitudinal force sensor 60 is fixed between the longitudinal force-applying component 40 and the tip fixing component 21 to detect the longitudinal force applied by the longitudinal force-applying component 40. The longitudinal force-applying component 40 is operated based on the value detected by the longitudinal force sensor 60 to ensure that the applied force is greater than or equal to the maximum lift that the blade 9 may experience during use, and to observe whether the blade 9 can withstand the applied force.

[0050] In other embodiments, the blade static strength testing device may further include a controller, with the lateral force sensor 50 and the longitudinal force sensor 60 both electrically connected to the controller to send the detected values ​​to the controller, and the lateral force application component 30 and the longitudinal force application component 40 also both electrically connected to the controller. The controller operates the lateral force application component 30 and the longitudinal force application component 40 based on the values ​​received from the lateral force sensor 50 and the longitudinal force sensor 60. Specifically, the controller has preset values ​​for the maximum centrifugal force and maximum lift that the blade 9 may withstand during use. It compares the real-time values ​​detected by the lateral force sensor 50 and the longitudinal force sensor 60 with the preset maximum values. If the real-time value received by the lateral force sensor 50 is less than the preset maximum centrifugal force, the lateral force application component 30 is extended; if the real-time value received by the lateral force sensor 50 is greater than or equal to the preset maximum centrifugal force, the lateral force application component 30 is stopped. If the real-time value received by the longitudinal force application component 40 is less than the preset maximum lift, the longitudinal force application component 40 is shortened; if the real-time value received by the longitudinal force application component 40 is greater than or equal to the preset maximum lift, the longitudinal force application component 40 is stopped, thereby achieving automatic testing of the blade 9's strength.

[0051] In the description of this application, it should be understood that the terms "longitudinal", "lateral", "up", "down", "left", "right", "vertical", "horizontal", "top", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0052] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0053] In this application, unless otherwise expressly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between the components; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0054] In this application, the term "some embodiments," etc., refers to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0055] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A device for testing the static strength of a blade, characterized in that, include: The frame has an installation area for mounting the blades; A fixing component is provided on the frame, and the fixing component is configured to fix the blade in the installation area; A lateral force-applying component, which can be driven to apply a lateral force to the blade; as well as A longitudinal force-applying component, which can be driven to apply a longitudinal force to the blade.

2. The blade static strength testing device according to claim 1, characterized in that, The frame includes a fixed frame and a movable frame movably disposed relative to the fixed frame. The fixing component is configured to connect the root of the blade to the fixed frame and the tip of the blade to the movable frame. The lateral force-applying component can be driven to apply a force to the blade tip through the movable frame, and the longitudinal force-applying component can be driven to apply a force to the blade tip through the fixed component.

3. The blade static strength testing device according to claim 2, characterized in that, The frame also includes a base, the fixing frame is connected to the base, the longitudinal force-applying member has a first fixed end disposed on the base and a first movable end disposed on the fixing assembly, the longitudinal force-applying member can be driven to apply a downward force to the tip of the blade through the fixing assembly.

4. The blade static strength testing device according to claim 3, characterized in that, The longitudinal force-applying component is formed in a retractable form.

5. The blade static strength testing device according to claim 2, characterized in that, The lateral force-applying member has a second fixed end disposed on the fixed frame and a second movable end disposed on the movable frame. The lateral force-applying member can be driven to apply a lateral force away from the blade root to the blade tip through the movable frame.

6. The blade static strength testing device according to claim 5, characterized in that, The lateral force-applying member is formed in a telescopic form and is provided in multiples, with at least two of the lateral force-applying members provided on opposite sides of the fixing component.

7. The blade static strength testing device according to claim 2, characterized in that, The fixing component includes a tip fixing member and a root fixing member, both of which are located within the installation area. The tip fixing member is connected to the movable frame, and the root fixing member is connected to the fixed frame.

8. The blade static strength testing device according to claim 7, characterized in that, The tip fixing member includes a mounting block having a mounting groove for inserting the tip of the blade, and the root fixing member includes a clamping block having a clamping groove for inserting the root of the blade.

9. The blade static strength testing device according to claim 8, characterized in that, The mounting block also has a first fixing hole communicating with the mounting groove, the tip fixing member further includes a second fixing rod passing through the first fixing hole into the mounting groove, the clamping block also has a plurality of second fixing holes communicating with the clamping groove, at least two of the second fixing holes being coaxially arranged, and the root fixing member further includes a second fixing rod passing through one of the second fixing holes into another coaxial second fixing hole.

10. The blade static strength testing device according to claim 1, characterized in that, The blade static strength testing device also includes a lateral force sensor and a longitudinal force sensor disposed on the fixed assembly to detect the lateral force applied to the blade by the lateral force-applying component and the longitudinal force applied to the blade by the longitudinal force-applying component.

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