Paddle supporting device for helicopter

Abstract

The invention provides a blade supporting device for a helicopter, and relates to the technical field of helicopters. The clamping jaw assembly is provided with a clamping part correspondingly matched with the paddle, and the opening angle of the clamping part can be correspondingly adjusted through a driving part in the driving assembly, so that the clamping part correspondingly clamps or releases the paddle; in addition, the supporting device is further provided with a supporting assembly, the supporting assembly is provided with a supporting part correspondingly connected with the driving assembly and an assembling part correspondingly connected with the helicopter, and stable supporting force can be provided for the driving assembly and the clamping assembly through the assembling part and the supporting part; therefore, the firmness when the clamping parts clamp the paddles is effectively guaranteed, and the stability of the folded paddles is effectively improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of helicopters, in particular to a blade supporting device for a helicopter. BACKGROUND

[0002] A propeller is one of the core components of a helicopter, which specifically includes multiple blades. However, the blades of the propeller are relatively long, so that the helicopter occupies a relatively large space in the horizontal plane, which wastes space resources and is inconvenient for transportation and storage. Therefore, some related technologies propose a structure that can realize folding of the blades. However, the long blades have poor stability after being folded. SUMMARY

[0003] Therefore, the purpose of the present application is to provide a blade supporting device for a helicopter to solve the problem of poor stability of the blades on the existing helicopter after being folded.

[0004] In order to achieve the above purpose, the present application provides a blade supporting device for a helicopter, wherein the blade supporting device for a helicopter comprises: a clamping jaw assembly formed with a clamping portion corresponding to the blades; a driving assembly formed with a fixed portion and a driving portion movably connected to the fixed portion, the driving portion is connected to the clamping jaw assembly, and when the driving portion moves relative to the fixed portion, the opening angle of the clamping portion can be adjusted correspondingly; a supporting assembly comprising a plurality of rod members to form a supporting portion connected to the driving assembly; the supporting assembly is further formed with a mounting portion connected to the helicopter.

[0005] Preferably, the driving assembly comprises a fixed column and a lifting cylinder; the outer side of the fixed column is formed with external threads, and the inner side of the lifting cylinder is formed with internal threads corresponding to the external threads. When the lifting cylinder is correspondingly sleeved on the outer side of the fixed column from the first end of the fixed column, the lifting cylinder can reciprocate along the extension direction of the fixed column, the lifting cylinder forms the driving portion, and the fixed column forms the fixed portion.

[0006] Preferably, the driving assembly further comprises a locking member correspondingly sleeved on the outer side of the fixed column.

[0007] Preferably, the supporting assembly comprises a crossbar mechanism, and the crossbar mechanism is formed with the supporting portion and the mounting portion.

[0008] Preferably, the crossbar mechanism has a telescopic end, the telescopic end of the crossbar mechanism is formed as the supporting part, the second end of the fixed column is connected to the telescopic end of the crossbar mechanism through a first universal joint, and an angle is formed between the telescopic direction of the telescopic end of the crossbar mechanism and the extending direction of the fixed column, so that the driving assembly and the supporting assembly are combined into a L-shaped bending structure. The crossbar mechanism has a fixed end, and the telescopic end of the crossbar mechanism is telescopic relative to the fixed end of the crossbar mechanism, and the fixed end of the crossbar mechanism is formed as the assembly part.

[0009] Preferably, the supporting assembly comprises a crossbar mechanism and a diagonal bar mechanism, and the crossbar mechanism and the diagonal bar mechanism each have a telescopic end and a fixed end, and the telescopic ends of the crossbar mechanism and the diagonal bar mechanism jointly form the supporting part. The fixed end of the crossbar mechanism is formed as the assembly part.

[0010] Preferably, the second end of the fixed column is connected to the telescopic end of the crossbar mechanism through a first universal joint, the telescopic end of the diagonal bar mechanism is hingedly connected to the first end of the lifting cylinder, and the fixed end of the diagonal bar mechanism is connected to the telescopic end of the crossbar mechanism through a second universal joint. The driving assembly and the supporting assembly are combined into a triangular structure.

[0011] Preferably, the clamping jaw assembly comprises a lower clamping jaw and an upper clamping jaw movably connected to the lower clamping jaw through a moving assembly, and the lifting cylinder is connected to the moving assembly. When the lifting cylinder rotates relative to the fixed column, the moving assembly synchronously moves to drive the upper clamping jaw to swing.

[0012] Preferably, the moving assembly comprises a rotating shaft rotatably connected to the lower clamping jaw, the rotating shaft extends along the height direction of the lower clamping jaw, the lifting cylinder is connected to the rotating shaft, and a moving block is threadedly connected to the outer side of the rotating shaft. When the lifting cylinder rotates relative to the fixed column, the rotating shaft synchronously rotates to drive the moving block to reciprocatingly move along the extending direction of the rotating shaft.

[0013] Preferably, the upper clamping jaw is movably connected to the moving block, and the upper clamping jaw is also hingedly connected to the lower clamping jaw, and when the moving block reciprocatingly moves, the upper clamping jaw swings relative to the lower clamping jaw.

[0014] The blade supporting device for the helicopter according to the present application, the clamping jaw assembly is formed with the clamping part corresponding to the blade, the opening angle of the clamping part can be adjusted correspondingly through the driving part in the driving assembly, so that the clamping part correspondingly clamps or releases the blade; in addition, the supporting device is further provided with the supporting assembly, the supporting assembly is formed with the supporting part corresponding to the driving assembly and the assembly part corresponding to the helicopter, the driving assembly and the clamping assembly can be provided with stable supporting force through the assembly part and the supporting part, so that the firmness when the clamping part clamps the blade is effectively guaranteed, and thus the stability of the folded blade is effectively improved. In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the following preferred embodiments are specifically described below, and the accompanying drawings are described in detail as follows. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments, it should be understood that the following drawings only show some embodiments of the present application, therefore should not be regarded as a limitation to the scope, for those skilled in the art, without paying creative labor, other related drawings can also be obtained according to these drawings.

[0016] Figure 1 is a schematic view of the first embodiment of the driving assembly according to the present application; Figure 2 is a schematic view of the second embodiment of the driving assembly according to the present application; Figure 3 is a schematic view of the clamping jaw assembly according to the embodiment of the present application; Figure 4 is a sectional view of the clamping jaw assembly according to the embodiment of the present application; Figure 5 is a schematic view of the first embodiment of the blade supporting device according to the present application; Figure 6 is a schematic view of the second embodiment of the blade supporting device according to the present application; Figure 7 is a schematic view of the third embodiment of the blade supporting device according to the present application; Figure 8 is a schematic view of the fourth embodiment of the blade supporting device according to the present application.

[0017] Icons: 11-Upper gripper; 111-Limiting post; 112-Hinge shaft; 12-Lower gripper; 13-Clamping part; 21-Rotating shaft; 22-Moving block; 221-Slot; 31-Upper transition piece; 32-Lower transition piece; 33-Adjusting block; 331-First round shaft; 332-Second round shaft; 41-Upper limit piece; 42-Lower limit piece; 43-Spring; 51-Lifting cylinder; 52-Fixing post; 53-Locking piece; 54-Turning sleeve; 61-Cylindrical rod; 62-Telescopic rod; 63-First universal joint; 64-Quick release pin; 71-Fixing rod; 72-Lifting rod; 73-Second universal joint; 74-Hinge seat; 8-Sheath. Detailed Implementation

[0018] The following detailed embodiments are provided to help the reader gain a comprehensive understanding of the methods, apparatus, and / or systems described herein. However, various changes, modifications, and equivalents of the methods, apparatus, and / or systems described herein will be apparent after understanding the disclosure of this application. For example, the order of operations described herein is merely illustrative and is not limited to the order set forth herein; changes that will be apparent after understanding the disclosure of this application are possible, except for operations that must occur in a specific order. Furthermore, for clarity and brevity, descriptions of features known in the art may be omitted.

[0019] The features described herein may be implemented in different forms and should not be construed as being limited to the examples described herein. Rather, the examples described herein have been provided merely to illustrate some of the many feasible ways of implementing the methods, apparatus, and / or systems described herein that will be apparent upon understanding the disclosure of this application.

[0020] Throughout the specification, when an element (such as a layer, region, or substrate) is described as being "on" another element, "connected to" another element, "bonded to" another element, "on" another element, or "covering" another element, it may be directly "on" another element, "connected to" another element, "bonded to" another element, "on" another element, or "covering" another element, or there may be one or more other elements in between. In contrast, when an element is described as being "directly on" another element, "directly connected to" another element, "directly bonded to" another element, "directly on" another element, or "directly covering" another element, there may be no other elements in between.

[0021] As used herein, the term “and / or” includes any one of the relevant items listed and any combination of any two or more items.

[0022] Although terms such as “first,” “second,” and “third” may be used herein to describe individual components, assemblies, regions, layers, or parts, these components, assemblies, regions, layers, or parts are not limited by these terms. Rather, these terms are used only to distinguish one component, assembly, region, layer, or part from another. Therefore, without departing from the teachings of the examples described herein, the first component, assembly, region, layer, or part referred to as the second component, assembly, region, layer, or part may also be referred to as the second component, assembly, region, layer, or part.

[0023] For ease of description, spatial relation terms such as “above,” “upper,” “below,” and “lower” are used herein to describe the relationship between one element and another, as shown in the accompanying drawings. Such spatial relation terms are intended to include not only the orientation depicted in the drawings but also different orientations of the device during use or operation. For example, if the device in the drawings is flipped, an element described as being “above” or “upper” relative to another element will subsequently be “below” or “lower” relative to that other element. Therefore, the term “above” includes both “above” and “below” orientations depending on the spatial orientation of the device. The device may also be positioned in other ways (e.g., rotated 90 degrees or in other orientations), and the spatial relation terms used herein will be interpreted accordingly.

[0024] The terminology used herein is for the purpose of describing various examples only and is not intended to limit this disclosure. Unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. The terms “comprising,” “including,” and “having” enumerate the stated features, quantities, operations, components, elements, and / or combinations thereof, but do not exclude the presence or addition of one or more other features, quantities, operations, components, elements, and / or combinations thereof.

[0025] Variations in the shapes shown in the accompanying drawings may occur due to manufacturing techniques and / or tolerances. Therefore, the examples described herein are not limited to the specific shapes shown in the accompanying drawings, but include changes in shape that may occur during manufacturing.

[0026] The features of the examples described herein can be combined in various ways that will be apparent upon understanding the disclosure of this application. Furthermore, although the examples described herein have a wide variety of constructions, other constructions are possible, as will be apparent upon understanding the disclosure of this application.

[0027] According to the present invention, a rotor blade clamping device for a helicopter is provided. The device includes a gripper assembly, a drive assembly, and a support assembly. The gripper assembly has a gripping portion 13 for clamping rotor blades. The drive assembly is correspondingly connected to the gripper assembly to adjust the opening angle of the gripping portion 13. The support assembly connects the gripper assembly and the drive assembly to the helicopter body, thereby providing stable and durable support for the drive assembly and the gripper assembly. The specific structure and assembly method of each component of the rotor blade clamping device for a helicopter according to the present invention will be described in detail below.

[0028] In this embodiment, as Figures 3 to 8 As shown, the gripper assembly includes a lower gripper 12 and an upper gripper 11 movably connected to the lower gripper 12 via a movable component. The gripper assembly forms a clamping portion 13 between the upper gripper 11 and the lower gripper 12, and this clamping portion 13 is formed as a U-shaped open structure to facilitate clamping or releasing the blade. Specifically, as... Figures 3 to 4 As shown, the lower jaw 12 has a cavity for assembling a movable component. The movable component includes a rotating shaft 21 extending along the height direction of the lower jaw 12, and the rotating shaft 21 is rotatably connected to the lower jaw 12 via bearings or other components. In addition, the movable component also includes a movable block 22, which is sleeved on the outer side of the rotating shaft 21 and screwed to the rotating shaft 21. Thus, when the rotating shaft 21 rotates relative to the lower jaw 12, the movable block 22 can reciprocate along the extension direction of the rotating shaft 21.

[0029] Furthermore, the end of the movable block 22 is formed with a groove 221, which is a U-shaped open structure; the end of the upper jaw 11 is formed with a limiting post 111, which is engaged with the groove 221. At this time, the limiting post 111 extends along the width direction of the lower jaw 12. Furthermore, the upper jaw 11 is also hinged to the lower jaw 12 via a hinge shaft 112. Thus, when the movable block 22 moves back and forth, the force can be transmitted to the limiting post 111 through the groove 221, thereby causing the upper jaw 11 to swing relative to the lower jaw 12 with the hinge shaft 112 as the rotation center. This achieves the technical effect of adjusting the opening angle of the clamping part 13. In addition, during the above process, the limiting post 111 moves back and forth along the extension direction of the groove 221 (i.e., the length direction of the lower jaw 12).

[0030] In this embodiment, the drive assembly includes a fixed portion and a drive portion movably connected to the fixed portion. The drive portion is connected to the aforementioned rotating shaft 21 to drive the rotating shaft 21 to rotate accordingly. Specifically, as shown... Figures 1 to 2As shown, the drive assembly includes a fixed column 52 and a lifting cylinder 51. The outer side of the fixed column 52 has an external thread, and the inner side of the lifting cylinder 51 has an internal thread corresponding to and adapted to the external thread. The lifting cylinder 51 is sleeved onto the outer side of the fixed column 52 from its first end and screwed onto the fixed column 52, thereby allowing the lifting cylinder 51 to rotate relative to the fixed column 52. Furthermore, when the lifting assembly rotates, it can reciprocate along the extending direction of the fixed column 52. In other words, in this embodiment, the lifting cylinder 51 forms the drive assembly, and the fixed column 52 forms the fixed assembly.

[0031] Furthermore, the first end of the lifting cylinder 51 is connected to the aforementioned rotating shaft 21. Thus, when the lifting cylinder 51 is turned, the rotating shaft 21 is driven to rotate synchronously by the lifting cylinder 51, causing the upper gripper 11 (relative to the lower gripper 12) to swing accordingly. This achieves the technical effect of adjustable opening angle of the clamping part 13. In addition, the drive assembly also includes a locking member 53 (which can be a locking nut) correspondingly sleeved on the outer side of the fixed column 52. When the lifting cylinder 51 rotates to a state where the clamping part 13 can stably clamp the blade, the locking member 53 locks the lifting cylinder 51 and the fixed column 52, preventing damage to the blade or release of the blade due to movement of the lifting cylinder 51, effectively ensuring the stability of the clamping part 13 when clamping the blade.

[0032] It should be noted that the second end of the fixed column 52 is connected to the support assembly described below, meaning that the circumferential rotation of the fixed column 52 (with its own axis as the axis of rotation) is restricted. Therefore, the lifting cylinder 51 can be driven to rotate by manually turning it (e.g., Figure 1 (As shown). The lifting cylinder 51 can reciprocate along the fixed column 52 while rotating, meaning the length of the drive assembly is adjustable, and the distance between the gripper assembly and the support described below is adjustable. This makes the support device more versatile and improves the flexibility of the clamping part 13 in application. However, it is not limited to this, such as... Figure 2 As shown, the fixing post 52 can be connected to the lifting cylinder 51 via the screw sleeve 54. The outer sides of the fixing post 52 and the lifting cylinder 51 are respectively formed with external threads in opposite directions. Furthermore, the fixing post 52 and the lifting cylinder 51 are respectively screwed to the two ends of the screw sleeve 54. Thus, under the action of the above-mentioned positive and negative thread structure, the position of the lifting cylinder 51 can be efficiently adjusted by screwing the screw sleeve 54. The side wall of the screw sleeve 54 is provided with a foldable handle, which can save torque when unfolded. In addition, in this embodiment, the lifting cylinder 51 is connected to the rotating shaft 21 through an adjustment component, which can improve the flexibility and stability of the gripper assembly during application and expand the applicability of the gripper assembly.

[0033] Specifically, such as Figures 3 to 4The adjustment assembly includes an adjustment block 33. Along the length of the lower jaw 12, two end faces of the adjustment block 33 are respectively formed with first circular shafts 331. The axes of the two first circular shafts 331 are collinear and both extend along the length of the lower jaw 12. Along the width of the lower jaw 12, two end faces of the adjustment block 33 are respectively formed with second circular shafts 332. The axes of the two second circular shafts 332 are collinear and both extend along the width of the lower jaw 12 (the structure of this adjustment block 33 is actually similar to the existing component "universal joint," so it will not be described in detail). Furthermore, the adjustment assembly includes an upper transition member 31 and a lower transition member 32 extending along the height of the lower jaw 12. The top end of the upper transition member 31 is fixed to the bottom end of the rotating shaft 21 (via a thread or set screw, etc.), and the bottom end of the upper transition member 31 is rotatably connected to the two first circular shafts 331. Similarly, the top end of the lower transition member 32 is rotatably connected to the two second circular shafts 332, and the bottom end of the lower transition member 32 is fixedly connected to the first end of the lifting cylinder 51.

[0034] More specifically, the adjustment assembly also includes an upper limit member 41 and a lower limit member 42. The upper limit member 41 is fixedly connected to the bottom of the lower gripper 12, and the lower limit member 42 is fixedly connected to the lifting cylinder 51. In addition, springs 43 are also sleeved on the outer sides of the upper transition member 31, the adjustment block 33 and the lower transition member 32. The two ends of the springs 43 are fixedly connected to the upper limit member 41 and the lower limit member 42 respectively.

[0035] Thus, when it is necessary to clamp the blade, the opening direction of the clamping part 13 can be adjusted according to the actual situation under the action of the adjusting component, so as to adjust the clamping part 13 to a convenient clamping angle; then, the opening angle of the clamping part 13 can be increased by rotating the lifting cylinder 51, so as to facilitate the placement of the blade into the clamping part 13, and then the opening angle of the clamping part 13 can be reduced to a state that can clamp the blade. When it is necessary to release the blade, increasing the opening angle of the clamping part 13 can efficiently separate the clamping part 13 from the blade, and then the gripper assembly can be reset under the action of the spring 43. In this way, the above structure can achieve clamping of blades of various specifications (or blades at various positions).

[0036] This support device provides stable support for the aforementioned lifting cylinder 51 and gripper assembly by setting a support component, thereby further improving the stability of the gripping part 13 when gripping the blade; the support component includes multiple rods to form a support part that is connected to the drive component (actually a fixed column 52) and an assembly part that is connected to the fuselage of the helicopter.

[0037] In a first embodiment of this device, such as Figure 5As shown, the support assembly only includes a crossbar mechanism, specifically a cylindrical rod 61. The first end of the cylindrical rod 61 is provided with a first universal joint 63 (e.g., a fisheye connector). That is, the cylindrical rod 61 is connected to the fixed post 52 via the first universal joint 63, thereby allowing the drive assembly and the gripper assembly to rotate relative to the cylindrical rod 61 via the first universal joint 63, further adjusting the fit between the clamping part 13 and the blade. It should be noted that the fisheye connector is an existing connecting component; therefore, its connection method with the fixed post 52 and the cylindrical rod 61, as well as its principle, will not be elaborated further. Similarly, the fixed post 52 is also connected to a quick-release pin 64, which is also an existing component.

[0038] In this embodiment, the first end of the cylindrical rod 61 is formed as a support portion, and the second end of the cylindrical rod 61 is formed as an assembly portion. The second end of the cylindrical rod 61 can be stably connected to the helicopter base through a connection method such as plug-in. Furthermore, an angle is formed between the extending direction of the cylindrical rod 61 and the extending direction of the fixed column 52, so that the drive assembly and the support assembly form an L-shaped bent structure. This structure facilitates adjustment of the gripper assembly and provides stable support for the gripper assembly.

[0039] In a second embodiment of this device, the crossbar mechanism is supplemented with a telescopic rod 62 as a telescopic end, as described in the first embodiment. Figure 6 As shown, the telescopic rod 62 is fitted onto the outer side of the cylindrical rod 61. The cylindrical rod 61 has a plurality of first insertion holes spaced apart along its extension direction, and the telescopic rod 62 has a second insertion hole corresponding to the first insertion holes. Thus, the telescopic rod 62 can reciprocate along the cylindrical rod 61. When the telescopic rod 62 moves to a preset position, a quick-release pin 64 is provided in the second insertion hole and the corresponding first insertion hole to lock the telescopic rod 62 and the cylindrical rod 61. Furthermore, the first end of the telescopic rod 62 is connected to the fixed post 52 via a first universal joint 63 (e.g., a fisheye connector).

[0040] In this embodiment, the first end of the telescopic rod 62 is formed as a support portion, and the second end of the cylindrical rod 61 is formed as an assembly portion for corresponding insertion with the helicopter fuselage. Furthermore, an angle is formed between the telescopic rod 62's extension direction and the fixed column 52's extension direction, so that the drive assembly and support assembly form an L-shaped bent structure. This structure facilitates adjustment of the gripper assembly and provides stable support for the gripper assembly.

[0041] Furthermore, a protective sleeve 8 is provided at the connection between the fixed post 52 and the first universal joint 63. The protective sleeve 8 has a bent elongated hole. The limiting pin is inserted into the connection end of the fixed post 52 and the first universal joint 63 through the elongated hole to fix the three together. The protective sleeve 8 can increase the service life of the first universal joint 63 and better transmit torque.

[0042] In a third embodiment of this device, such as Figure 7 As shown, the support assembly adds a diagonal bar mechanism to the crossbar mechanism in the second embodiment described above. Both the crossbar mechanism and the diagonal bar mechanism have telescopic ends, and the telescopic ends of the crossbar mechanism and the diagonal bar mechanism together form a support part. The diagonal bar mechanism adopts a structure similar to the drive assembly so that the length of the diagonal bar mechanism is adjustable. Specifically, the diagonal bar mechanism may include a fixed rod 71 and a lifting rod 72, with the lifting rod 72 directly screwed to the outer side of the fixed rod 71. The fixed end of the diagonal bar mechanism (i.e., the end of the fixed rod 71) is connected to the telescopic rod 62 in the crossbar mechanism via a second universal joint 73. The telescopic end of the diagonal bar mechanism (i.e., the end of the lifting rod 72) is hinged to the lifting cylinder 51 via a hinge seat 74 and other components. The hinge seat 74 is rotatably sleeved on the outer side of the lifting cylinder 51 via a bearing so that the lifting cylinder 51 can rotate relative to the hinge seat 74 and the diagonal bar structure.

[0043] In this embodiment, the telescopic rod 62 is sleeved on the outer side of the cylindrical rod 61 so that it can extend and retract relative to the cylindrical rod 61. The second end of the cylindrical rod 61 is formed as an assembly part so as to be inserted into the fuselage of the helicopter.

[0044] In a fourth embodiment of this device, such as Figure 8 As shown, compared to the third embodiment described above, the drive assembly is replaced with the aforementioned positive and negative thread engagement structure. Furthermore, a set of quick-release pins 64 is added to the outer side of the telescopic rod 62.

[0045] like Figures 7 to 8 As shown, the drive assembly and support assembly are arranged in a triangular shape, thus providing a more stable support force for the gripper assembly. In this embodiment, when the lifting cylinder 51 rotates and rises, the hinge seat 74 can only move synchronously with the lifting cylinder 51 along the fixed column 52. Based on the arrangement of the first universal joint 63, the second universal joint 73, the hinge seat 74, and related structures, the support assembly can flexibly adapt to the state of the gripper assembly to provide a stable support force for the gripper assembly under various working conditions, thereby ensuring the stability of the blade.

[0046] According to the rotor blade support device for helicopters as described above, the gripper assembly has a gripping portion 13 that is adapted to the rotor blade. The opening angle of the gripping portion 13 can be adjusted by the drive portion in the drive assembly, so that the gripping portion 13 can clamp or release the rotor blade. The opening direction of the gripping portion 13 can be adjusted by the adjustment assembly so that the gripping portion 13 can stably clamp the rotor blade under different operating conditions. In addition, the support assembly has a support part that is connected to the drive assembly and an assembly part that is connected to the helicopter. The assembly part and the support part can provide stable support for the drive assembly and the clamping assembly, thereby effectively ensuring the firmness of the clamping part 13 when clamping the blade, thus effectively improving the stability of the folded blade.

[0047] Finally, it should be noted that the above-described embodiments are merely specific implementations of this application, used to illustrate the technical solutions of this application, and not to limit them. The protection scope of this application is not limited thereto. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that any person skilled in the art can still modify or easily conceive of changes to the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some of the technical features, within the technical scope disclosed in this application. Such modifications, changes, or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application, and should all be covered within the protection scope of this application. Therefore, the protection scope of this application should be defined by the protection scope of the claims.

Claims

1. A rotor blade support device for a helicopter, characterized in that, The rotor blade support device for helicopters includes: The gripper assembly has a gripping part that is adapted to correspond to the blade; A drive assembly has a fixed part and a drive part that is movably connected to the fixed part. The drive part is connected to the gripper assembly. When the drive part moves relative to the fixed part, the opening angle of the gripper part can be adjusted accordingly. The support assembly includes multiple rods forming a support portion corresponding to and connected to the drive assembly; the support assembly also forms an assembly portion corresponding to and connected to the helicopter.

2. The rotor blade support device for helicopters according to claim 1, characterized in that, The drive assembly includes a fixed column and a lifting cylinder; the outer side of the fixed column is formed with an external thread, and the inner side of the lifting cylinder is formed with an internal thread that corresponds to and matches the external thread. When the lifting cylinder is sleeved on the outer side of the fixed column from the first end of the fixed column, the lifting cylinder can reciprocate along the extension direction of the fixed column. The lifting cylinder forms the driving part, and the fixed column forms the fixing part.

3. The rotor blade support device for helicopters according to claim 2, characterized in that, The drive assembly also includes a locking member correspondingly sleeved on the outer side of the fixed post.

4. The rotor blade support device for helicopters according to claim 2, characterized in that, The support assembly includes a crossbar mechanism, which forms the support portion and the assembly portion.

5. The rotor blade support device for a helicopter according to claim 4, characterized in that, The crossbar mechanism has a telescopic end, which forms the support portion. The second end of the fixed column is connected to the telescopic end of the crossbar mechanism via a first universal joint. The telescopic direction of the crossbar mechanism and the extension direction of the fixed column form an angle, so that the drive assembly and the support assembly form an L-shaped bending structure. The crossbar mechanism has a fixed end, and the telescopic end of the crossbar mechanism extends and retracts relative to the fixed end of the crossbar mechanism. The fixed end of the crossbar mechanism is formed as the assembly part.

6. The rotor blade support device for a helicopter according to claim 2, characterized in that, The support assembly includes a horizontal bar mechanism and a diagonal bar mechanism. Both the horizontal bar mechanism and the diagonal bar mechanism have a telescopic end and a fixed end. The telescopic ends of the horizontal bar mechanism and the diagonal bar mechanism together form the support part. The fixed end of the crossbar mechanism is formed as the assembly part.

7. The rotor blade support device for a helicopter according to claim 6, characterized in that, The second end of the fixed column is connected to the telescopic end of the crossbar mechanism via a first universal joint; the telescopic end of the diagonal bar mechanism is hinged to the first end of the lifting cylinder, and the fixed end of the diagonal bar mechanism is connected to the telescopic end of the crossbar mechanism via a second universal joint. The driving component and the supporting component are arranged in a triangular shape.

8. The rotor blade support device for a helicopter according to claim 2, characterized in that, The gripper assembly includes a lower gripper and an upper gripper that is movably connected to the lower gripper via a movable component; the lifting cylinder is connected to the movable component accordingly. When the lifting cylinder rotates relative to the fixed column, the moving component moves synchronously to drive the upper gripper to swing accordingly.

9. The rotor blade support device for a helicopter according to claim 8, characterized in that, The moving component includes a rotating shaft that is rotatably connected to the lower gripper, the rotating shaft extending along the height direction of the lower gripper, and the lifting cylinder being connected to the rotating shaft; a moving block is threadedly connected to the outer side of the rotating shaft. When the lifting cylinder rotates relative to the fixed column, the rotating shaft rotates synchronously to drive the moving block to reciprocate along the extension direction of the rotating shaft.

10. The rotor blade support device for a helicopter according to claim 9, characterized in that, The upper gripper is movably connected to the moving block, and the upper gripper is also hinged to the lower gripper. When the moving block reciprocates, the upper gripper swings relative to the lower gripper.

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