Hoisting equipment for helicopter blade installation

Abstract

The hoisting equipment comprises a supporting frame, supporting rods are fixedly installed on the top of the supporting frame in a bilateral symmetry mode, a top plate cross beam is fixedly installed between the two supporting rods, and supporting plates are fixedly installed on the front side of the supporting frame in a bilateral symmetry mode; a clamping mechanism is arranged between the two supporting frames and the top plate cross beam, and through the arrangement of the clamping mechanism, after a worker places a paddle body on the tops of the two supporting plates, an electric push lever is started through a remote control power supply control box; and the electric push lever is started to drive the inclined support, the first rocker arm cross beam, the second rocker arm cross beam and the two rocker arms on the periphery to perform angle rotation through the driving rod, so that the bottoms of the two rocker arms are matched with the supporting plate to clamp and limit the paddle body.

Description

Technical Field

[0001] This utility model relates to the technical field of rotor blade installation equipment, and in particular to a hoisting device for installing helicopter rotor blades. Background Technology

[0002] Traditionally, helicopter rotor blades are secured by wrapping bandages around both ends before hoisting. This method has several drawbacks. The installation process is cumbersome, requiring careful wrapping and unwrapping of the bandages each time, consuming significant time and manpower. Furthermore, the bandages offer limited stability; during hoisting, blade movement or uneven stress can cause the bandages to loosen, leading to the blade slipping and potentially causing serious safety accidents and economic losses. In addition, repeated use of the bandages causes wear and tear, necessitating frequent replacement and increasing operating costs.

[0003] Wrapping the rotor blades with straps is a delicate and time-consuming task. Workers must carefully and evenly wrap the straps securely around both ends of the blades to ensure they don't come loose during hoisting. This process requires not only high-level skills but also a significant amount of time. Furthermore, repeated checks are necessary after each wrapping to ensure safety, further increasing time costs. In large-scale production environments, this inefficient installation method becomes a bottleneck on the production line, severely slowing down the helicopter's final assembly schedule. Therefore, we propose a hoisting device for helicopter rotor blade installation to address the aforementioned problems. Utility Model Content

[0004] The purpose of this section is to outline some aspects of the embodiments of this utility model and to briefly introduce some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this utility model, to avoid obscuring the purpose of these documents, and such simplifications or omissions should not be used to limit the scope of this utility model.

[0005] Therefore, the purpose of this invention is to provide a lifting device for helicopter rotor blade installation, which solves the problem that wrapping the rotor blades with straps is a delicate and time-consuming task. Workers need to carefully and evenly wrap the straps securely around both ends of the rotor blade to ensure they do not come loose during lifting. This process not only requires workers to have high operational skills but also consumes a lot of time. Moreover, after each wrapping is completed, repeated checks are required to ensure safety, further increasing time costs. In a large-scale production environment, this inefficient installation method has become a bottleneck on the production line, seriously slowing down the final assembly progress of helicopters.

[0006] To solve the above technical problems, this utility model provides a hoisting device for installing helicopter rotor blades, which adopts the following technical solution: it includes a support frame, support rods are symmetrically fixedly installed on the top of the support frame, a top plate beam is fixedly installed between the two support rods, support plates are symmetrically fixedly installed on the front side of the support frame, and a clamping mechanism is provided between the two support frames and the top plate beam;

[0007] The clamping mechanism includes two rocker arms, a first rocker arm beam, a second rocker arm beam, an oblique support, and a vertical support. The two rocker arms are respectively hinged to the front of the corresponding support rod, and the first rocker arm beam and the second rocker arm beam are fixedly installed between the two rocker arms from front to back. The vertical support is fixedly installed on the top of the first rocker arm beam, and the oblique support is fixedly installed between the vertical support and the second rocker arm beam. Rubber pads are fixedly installed at the bottom of the two rocker arms and the top of the two support plates, and a blade body is provided between the bottom of the two rocker arms and the top of the two support plates.

[0008] A drive mechanism is provided below the top plate crossbeam.

[0009] Optionally, the drive mechanism includes an electric push rod, a drive rod, a first connecting block, and a second connecting block. The first connecting block is fixedly installed on the top of the inclined support, and the second connecting block is fixedly installed on the bottom of the top plate crossbeam. The electric push rod is movably hinged inside the second connecting block. The drive rod is fixedly connected to the front output end of the electric push rod, and the front end of the drive rod is movably hinged inside the first connecting block.

[0010] Optionally, a power control box is fixedly installed on the rear side of the top plate crossbeam by bolts. The power control box includes a wireless controller and a power module, and the power control box is electrically connected to the electric push rod.

[0011] Optionally, a top plate is fixedly installed on the top of the top plate beam, and first lifting holes are fixedly provided at both ends of the top plate beam. Multiple second lifting holes are provided inside the top plate.

[0012] Optionally, a fixing plate is fixedly installed on both sides of the support frame, and the two fixing plates have left and right adjustment holes inside.

[0013] Optionally, the curvature of the bottom of the two rocker arms, the top of the two support plates, and the surface of the multiple rubber pads that contact the blades can be precisely customized according to the actual curvature of the blades.

[0014] In summary, this utility model has at least one of the following beneficial effects:

[0015] 1. By setting up a clamping mechanism, after the operator places the blade body on top of the two support plates, they activate the electric push rod via the remote control power control box. The activation of the electric push rod drives the inclined support and the surrounding first rocker arm beam, second rocker arm beam, and two rocker arms to rotate at an angle. This allows the bottom of the two rocker arms to cooperate with the support plates to clamp and limit the blade body. By using rubber pads, which have excellent flexibility, strong cushioning performance, and optimized friction coefficient, stable clamping is ensured while reducing the risk of wear. The curvature of the bottom of the two rocker arms, the top plates of the two support plates, and the surfaces of the multiple rubber pads in contact with the blade is precisely customized according to the actual curvature of the blade to achieve a seamless fit. This effectively prevents the blade from slipping or falling off due to uneven local stress, laying a solid foundation for safe hoisting.

[0016] 2. By setting up a top plate beam and a top plate, and opening the first and second lifting holes at both ends of the top plate beam and inside the top plate respectively, the precise distribution and dynamic balance control of the tension borne by different lifting holes can effectively ensure that the equipment maintains a stable mechanical balance throughout the entire lifting process. This fundamentally eliminates safety accidents such as blade swaying and falling off caused by lifting imbalance, providing a comprehensive and multi-layered solid guarantee for the safe and stable lifting of the blades.

[0017] 3. By setting up a fixed plate with left and right adjustment holes inside, precise manual intervention and fine adjustment of the blade position in the air are cleverly achieved. During the critical installation stage when the blade is in the hoisted state, operators can use specific tools to finely operate the left and right adjustment holes according to actual installation needs and precise position judgment. This allows for multi-dimensional and high-precision fine-tuning of the blade's attitude, greatly improving the accuracy and adaptability of blade installation and ensuring that the blade can be successfully installed in the optimal posture.

[0018] 4. By installing a bolt-mounted power control box, which includes a wireless controller and power module, a highly efficient wireless control network is established. This design not only completely eliminates the constraints of traditional cable connections, greatly expanding the flexibility of equipment operation, but more importantly, it fundamentally eliminates various safety hazards caused by cable entanglement and dragging during hoisting, significantly improving the safety and smoothness of hoisting operations and creating a safer and more convenient working environment for operators. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a three-dimensional view of the overall structure of this utility model from the right side;

[0022] Figure 3 This is a three-dimensional view of the rear side of part of the structure of this utility model;

[0023] Figure 4 This is a schematic diagram of the overall structure hoisting of this utility model.

[0024] Explanation of reference numerals in the attached drawings: 1. Support frame; 2. Support rod; 3. Top plate crossbeam; 4. Support plate; 5. Rocker arm; 6. First rocker arm crossbeam; 7. Second rocker arm crossbeam; 8. Diagonal support; 9. Vertical support; 10. Rubber pad; 11. Blade body; 12. Electric push rod; 13. Drive rod; 14. First connecting block; 15. Second connecting block; 16. Power control box; 17. Top plate; 18. First hoisting hole; 19. Second hoisting hole; 20. Fixing plate; 21. Left and right adjustment hole. Detailed Implementation

[0025] The following is in conjunction with the appendix Figure 1-4 The present invention will be described in further detail below.

[0026] Example 1, refer to Figure 1-4 In this embodiment, the problem of wrapping the rotor blades with bandages is addressed because it is a delicate and time-consuming task. Workers need to carefully and evenly wrap the bandages securely around both ends of the blades to ensure they do not come loose during hoisting. This process not only requires highly skilled workers but also consumes a significant amount of time. Moreover, repeated checks are required after each wrapping to ensure safety, further increasing time costs. In a large-scale production environment, this inefficient installation method becomes a bottleneck on the production line, severely slowing down the final assembly progress of helicopters. This utility model discloses a hoisting device for helicopter rotor blade installation.

[0027] It includes a support frame 1, with support rods 2 fixedly installed symmetrically on the top of the support frame 1, a top plate beam 3 fixedly installed between the two support rods 2, support plates 4 fixedly installed symmetrically on the front side of the support frame 1, and a clamping mechanism provided between the two support frames 1 and the top plate beam 3.

[0028] The clamping mechanism includes two rocker arms 5, a first rocker arm beam 6, a second rocker arm beam 7, an oblique support 8, and a vertical support 9. The two rocker arms 5 are respectively hinged to the front side of the corresponding support rod 2, and the first rocker arm beam 6 and the second rocker arm beam 7 are fixedly installed between the two rocker arms 5 from front to back. The vertical support 9 is fixedly installed on the top of the first rocker arm beam 6, and the oblique support 8 is fixedly installed between the vertical support 9 and the second rocker arm beam 7. Rubber pads 10 are fixedly installed at the bottom of the two rocker arms 5 and the top of the two support plates 4, and a blade body 11 is provided between the bottom of the two rocker arms 5 and the top of the two support plates 4.

[0029] A drive mechanism is provided below the top beam 3.

[0030] The drive mechanism includes an electric push rod 12, a drive rod 13, a first connecting block 14, and a second connecting block 15. The first connecting block 14 is fixedly installed on the top of the inclined support 8, and the second connecting block 15 is fixedly installed on the bottom of the top plate crossbeam 3. The electric push rod 12 is movably hinged inside the second connecting block 15. The drive rod 13 is fixedly connected to the front output end of the electric push rod 12, and the front end of the drive rod 13 is movably hinged inside the first connecting block 14.

[0031] A power control box 16 is fixedly installed on the rear side of the top beam 3 by bolts. The power control box 16 includes a wireless controller and a power module. The power control box 16 is electrically connected to the electric push rod 12.

[0032] A top plate 17 is fixedly installed on the top of the top plate beam 3. First hoisting holes 18 are fixedly provided at both ends of the top plate beam 3. Multiple second hoisting holes 19 are opened inside the top plate 17.

[0033] The first lifting hole 18 and the second lifting hole 19 are used for chain installation.

[0034] The support frame 1 has fixed plates 20 on both sides, and the two fixed plates 20 have left and right adjustment holes 21 inside.

[0035] Operators can use specific tools to finely adjust the left and right adjustment holes 21 according to actual installation needs and precise position judgment. This allows for multi-dimensional and high-precision fine-tuning of the blade's attitude, greatly improving the accuracy and adaptability of blade installation and ensuring that the blade can be installed smoothly in the best posture.

[0036] The curvature of the bottom of the two rocker arms 5, the top of the two support plates 4, and the surface of the multiple rubber pads 10 that contact the blades is precisely customized according to the actual curvature of the blades.

[0037] The curvature of the bottom of the two rocker arms 5, the top of the two support plates 4, and the surface of the multiple rubber pads 10 that contact the blades is precisely customized according to the actual curvature of the blades to achieve a seamless fit, effectively preventing blade slippage or detachment caused by uneven local force, thus laying a solid foundation for safe hoisting.

[0038] The specific working principle is as follows: First, after the staff places the blade body 11 on top of the two support plates 4, they start the electric push rod 12 through the remote control power control box 16. The electric push rod 12 drives the inclined support 8 and the surrounding first rocker arm beam 6, second rocker arm beam 7 and two rocker arms 5 to rotate at an angle through the drive rod 13. The bottom of the two rocker arms 5 cooperates with the support plates 4 to clamp and limit the blade body 11. Then, the chain is used to align with the designated first hoisting hole 18 and second hoisting hole 19 for fixation, thereby hoisting the blade body 11.

[0039] The above are all preferred embodiments of this utility model, and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape and principle of this utility model should be covered within the scope of protection of this utility model.

Claims

1. A lifting device for installing helicopter rotor blades, comprising a support frame (1), characterized in that: The support frame (1) is symmetrically fixedly installed with support rods (2) on the top left and right, and a top plate beam (3) is fixedly installed between the two support rods (2). The support frame (1) is symmetrically fixedly installed with support plates (4) on the front left and right, and a clamping mechanism is provided between the two support frames (1) and the top plate beam (3). The clamping mechanism includes two rocker arms (5), a first rocker arm beam (6), a second rocker arm beam (7), an oblique support (8), and a vertical support (9). The two rocker arms (5) are respectively hinged to the front side of the corresponding support rod (2), and the first rocker arm beam (6) and the second rocker arm beam (7) are fixedly installed between the two rocker arms (5) from front to back. The top of the first rocker arm beam (6) is fixedly installed with a vertical support (9), and the oblique support (8) is fixedly installed between the vertical support (9) and the second rocker arm beam (7). Rubber pads (10) are fixedly installed at the bottom of the two rocker arms (5) and at the top of the two support plates (4), and a blade body (11) is provided between the bottom of the two rocker arms (5) and the top of the two support plates (4). A drive mechanism is provided below the top plate crossbeam (3).

2. The lifting equipment for installing helicopter rotor blades according to claim 1, characterized in that: The drive mechanism includes an electric push rod (12), a drive rod (13), a first connecting block (14), and a second connecting block (15). The first connecting block (14) is fixedly installed on the top of the inclined support (8), and the second connecting block (15) is fixedly installed on the bottom of the top plate beam (3). The electric push rod (12) is movably hinged inside the second connecting block (15). The drive rod (13) is fixedly connected to the front output end of the electric push rod (12), and the front end of the drive rod (13) is movably hinged inside the first connecting block (14).

3. The lifting equipment for installing helicopter rotor blades according to claim 1, characterized in that: A power control box (16) is fixedly installed on the rear side of the top beam (3) by bolts. The power control box (16) includes a wireless controller and a power module. The power control box (16) is electrically connected to the electric push rod (12).

4. The lifting equipment for installing helicopter rotor blades according to claim 1, characterized in that: The top plate (17) is fixedly installed on the top of the top plate beam (3), and the top plate beam (3) has first hoisting holes (18) fixedly installed at both ends. The top plate (17) has multiple second hoisting holes (19) inside.

5. The lifting equipment for installing helicopter rotor blades according to claim 1, characterized in that: The support frame (1) is fixedly installed with fixing plates (20) on both sides, and the two fixing plates (20) have left and right adjustment holes (21) inside.

6. The lifting equipment for installing helicopter rotor blades according to claim 1, characterized in that: The curvature of the bottom of the two rocker arms (5), the top of the two support plates (4), and the surface of the multiple rubber pads (10) in contact with the blades is precisely customized according to the actual curvature of the blades.

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