A helicopter main rotor blade rear section replacement device

Abstract

This utility model discloses a helicopter main rotor blade rear section replacement device, belonging to the field of rotor blade replacement technology. It includes a base, a support seat fixedly connected to the upper surface of the base, a support frame fixedly connected to the upper surface of the support seat, a lifting threaded screw rotatably connected inside the support frame, a lifting seat threadedly fitted onto the surface of the lifting threaded screw, a mounting plate fixedly connected to the front of the lifting seat, mounting brackets fixedly connected to both sides of the front of the mounting plate, a clamping threaded screw rotatably connected inside the mounting bracket, and two movable seats threadedly fitted onto the surface of the clamping threaded screw. This utility model ensures stability during the replacement of the main rotor blade rear section by setting a limiting component, avoiding impact on replacement accuracy and safety due to equipment shaking. The clamping component allows the device to adapt to irregularly shaped main rotor blade rear sections, improving clamping stability.

Description

Technical Field

[0001] This utility model relates to the field of rotor blade replacement technology, and in particular to a replacement device for the rear section of a helicopter main rotor blade. Background Technology

[0002] In the field of helicopter maintenance, replacing the rear section of the main rotor blade is a critical and complex task.

[0003] Traditional clamping devices for replacing rear section components mostly use single-point clamping. Due to the complex and varied surface shape of the main rotor blade rear section component, traditional clamping devices cannot achieve close and close contact with it. In actual operation, the clamping may be unstable, and improper clamping methods can easily damage the main rotor blade rear section component, affecting its performance and service life. In order to solve the above problems, this utility model provides a helicopter main rotor blade rear section component replacement device. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a replacement device for the rear section of a helicopter main rotor blade.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A helicopter main rotor blade rear section replacement device includes a base, a support seat fixedly connected to the upper surface of the base, a support frame fixedly connected to the upper surface of the support seat, a lifting threaded screw rotatably connected inside the support frame, a lifting seat threadedly sleeved on the surface of the lifting threaded screw, a mounting plate fixedly connected to the front of the lifting seat, mounting brackets fixedly connected to both sides of the front of the mounting plate, a clamping threaded screw rotatably connected inside the mounting bracket, two movable seats threadedly sleeved on the surface of the clamping threaded screw, clamping components fixedly connected to the front of the two movable seats, and limiting components provided on both sides of the base.

[0007] As a further improvement of this utility model, the clamping assembly includes clamping plates fixedly connected to the front of the two movable seats. Several first threaded holes are opened on the opposite side of the two clamping plates. Adjusting bolts are fixedly connected inside the several first threaded holes. A positioning block is fixedly connected to one end of the adjusting bolt. A rubber pad is provided on the surface of the positioning block. A knob is fixedly connected to the other end of the adjusting bolt. The internal threads of the two movable seats are opposite.

[0008] As a further improvement of this utility model, the limiting component includes storage slots on both sides of the base, and movable plates are movably connected inside the two storage slots. A second threaded hole is provided on the upper surface of the other end of the movable plate. A positioning bolt is threaded inside the second threaded hole. The lower end of the positioning bolt is rotatably connected to the positioning plate through a bearing, and a handle is fixedly connected to the upper end of the positioning bolt.

[0009] As a further improvement of this utility model, a limiting groove is provided on the upper surface of the base, a limiting block adapted to the limiting groove is fixedly connected to the upper surface of the other end of the movable plate, and several moving wheels are fixedly connected to the lower surface of the base.

[0010] As a further improvement of this utility model, a first servo motor is fixedly connected inside the support base, and the power end of the first servo motor is fixedly connected to the lifting threaded screw.

[0011] As a further improvement of this utility model, a second servo motor is fixedly connected to the upper end of each of the two mounting brackets, and the power ends of the two second servo motors are respectively connected to two clamping threaded screws.

[0012] The beneficial effects of this utility model are:

[0013] By setting a limit component, when in use, the movable plate is pulled out from the storage slot, and the handle is turned to drive the positioning bolt to rotate in the second threaded hole of the movable plate, so that the positioning plate moves down to contact the ground. The friction between the positioning plate and the ground achieves stable fixation of the equipment. The operation is simple and can ensure that the equipment remains stable during the replacement of the main blade rear section, avoiding the impact of equipment shaking on the replacement accuracy and safety.

[0014] By setting up a lifting seat and clamping plates, during use, the first servo motor is started to drive the lifting threaded screw to rotate, which in turn moves the lifting seat vertically along the support frame, thereby achieving precise adjustment of the lifting seat height. This allows the mounting plate to accurately reach the corresponding height of the rear section of the main blade. At the same time, the second servo motor is started to drive the clamping threaded screw to rotate. Since the internal threads of the movable seats are opposite, the two clamping plates will move towards each other synchronously and approach the rear section of the main blade. The automated control method reduces the complexity and labor intensity of manual operation and improves the accuracy and efficiency of operation.

[0015] By setting up the clamping components, during use, the extension length of each adjusting bolt can be adjusted by rotating the knob. This allows the rubber pads of the positioning blocks to conform to the curved surface of the main blade rear section at different contact depths. Several positioning blocks form a multi-point adaptive clamping mechanism, which can better adapt to irregularly shaped main blade rear sections, ensuring that they are fixed without damage. At the same time, the rubber pads can also play a role in cushioning and anti-slip, further protecting the main blade rear section and improving the stability of the clamping. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a helicopter main rotor blade rear section replacement device proposed in this utility model.

[0017] Figure 2 This is a schematic diagram of the back structure of a helicopter main rotor blade rear section replacement device proposed in this utility model.

[0018] Figure 3 This is a schematic diagram of the clamping assembly of a helicopter main rotor blade rear section replacement device proposed in this utility model.

[0019] In the diagram: 1. Base, 2. Support seat, 3. Support frame, 4. Lifting threaded screw, 5. Lifting seat, 6. Mounting plate, 7. Mounting bracket, 8. Clamping threaded screw, 9. Movable seat, 10. Clamping plate, 11. Adjusting bolt, 12. Positioning block, 13. Knob, 14. Movable plate, 15. Positioning bolt, 16. Positioning plate, 17. Handle, 18. Limit block, 19. Moving wheel, 20. First servo motor, 21. Second servo motor. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0021] Reference Figures 1-3 A helicopter main rotor blade rear section replacement device includes a base 1, a support seat 2 fixedly connected to the upper surface of the base 1, a support frame 3 fixedly connected to the upper surface of the support seat 2, a lifting threaded screw 4 rotatably connected inside the support frame 3, a lifting seat 5 threadedly sleeved on the surface of the lifting threaded screw 4, a mounting plate 6 fixedly connected to the front of the lifting seat 5, mounting brackets 7 fixedly connected to both sides of the front of the mounting plate 6, a clamping threaded screw 8 rotatably connected inside the mounting bracket 7, two movable seats 9 threadedly sleeved on the surface of the clamping threaded screw 8, clamping components fixedly connected to the front of both movable seats 9, and limiting components provided on both sides of the base 1.

[0022] In this utility model, the clamping assembly includes clamping plates 10 fixedly connected to the front of two movable seats 9. Several first threaded holes are opened on the opposite side of each clamping plate 10. These first threaded holes are evenly distributed on the surface of the clamping plates 10, which can provide a stable and orderly connection position for subsequent installation of adjusting bolts 11. Adjusting bolts 11 are fixedly connected inside the several first threaded holes. One end of the adjusting bolt 11 is fixedly connected to a positioning block 12. The surface of the positioning block 12 is provided with a rubber pad. The rubber pad has good elasticity and friction, which can effectively buffer the clamping force and prevent damage to the rear section of the main blade. It can also increase the friction between the bolt and the component and improve the stability of the clamping. The other end of the adjusting bolt 11 is fixedly connected to a knob 13. The surface of the knob 13 is provided with anti-slip texture, which makes it easy for the operator to rotate the adjusting bolt 11 during operation. The internal threads of the two movable seats 9 are opposite. This design allows the two movable seats 9 to move synchronously towards or away from each other when the clamping threaded screw 8 rotates, so as to achieve precise clamping action.

[0023] The limiting component includes storage slots on both sides of the base 1. Movable plates 14 are movably connected inside the two storage slots. A second threaded hole is provided on the upper surface of the other end of the movable plate 14. A positioning bolt 15 is threaded inside the second threaded hole. The lower end of the positioning bolt 15 is rotatably connected to the positioning plate 16 via a bearing. A handle 17 is fixedly connected to the upper end of the positioning bolt 15. A limiting groove is provided on the upper surface of the base 1. A limiting block 18 that matches the limiting groove is fixedly connected to the upper surface of the other end of the movable plate 14. The depth and width of the limiting groove can fit tightly with the limiting block 18 to prevent the movable plate 14 from shifting during positioning. Several moving wheels 19 are fixedly connected to the lower surface of the base 1. The moving wheels 19 enable the equipment to be moved quickly.

[0024] A first servo motor 20 is fixedly connected inside the support base 2. The power end of the first servo motor 20 is fixedly connected to the lifting threaded screw 4. The first servo motor 20 can accurately control the rotation of the lifting threaded screw 4, thereby realizing the precise lifting of the lifting base 5. The upper ends of the two mounting brackets 7 are fixedly connected to the second servo motors 21. The power ends of the two second servo motors 21 are respectively connected to the two clamping threaded screws 8. The second servo motors 21 can accurately control the rotation of the clamping threaded screws 8, thereby realizing the precise movement of the clamping components.

[0025] In use, the base 1 is moved to the working position by the casters 19, and then pulled out from the storage slot by the movable plates 14 in the limiting components on both sides of the base 1. The limiting blocks 18 are used to position the base 1 by engaging with the limiting slots on the upper surface of the base 1. The handle 17 is rotated to drive the positioning bolts 15 to rotate in the second threaded holes of the movable plates 14, causing the positioning plate 16 to move down and contact the ground to fix the equipment. Then, the first servo motor 20 is started to drive the lifting threaded screw 4 to rotate, which drives the lifting seat 5 to move vertically along the support frame 3, so that the mounting plate 6 reaches the corresponding height of the rear section of the main blade. Next, the second servo motor 21 on the mounting frame 7 is started to drive the clamping threaded screw 8 to rotate. Since the internal threads of the movable seat 9 are opposite, the two clamping plates 10 move synchronously towards each other and approach the rear section of the main blade. By rotating the knob 13 to adjust the extension length of each adjusting bolt 11, the rubber pads of the positioning block 12 are made to fit the curved surface of the rear section of the main blade with different contact depths. Several positioning blocks 12 form multi-point adaptive clamping to ensure that the irregularly shaped rear section of the main blade is fixed without damage. After clamping is completed, the equipment can be used for disassembly or installation of the rear section of the main blade.

[0026] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A helicopter main rotor blade rear section replacement device, comprising a base (1), characterized in that, A support seat (2) is fixedly connected to the upper surface of the base (1), and a support frame (3) is fixedly connected to the upper surface of the support seat (2). A lifting threaded rod (4) is rotatably connected inside the support frame (3). A lifting seat (5) is threadedly sleeved on the surface of the lifting threaded rod (4). A mounting plate (6) is fixedly connected to the front of the lifting seat (5). Mounting brackets (7) are fixedly connected to both sides of the front of the mounting plate (6). A clamping threaded rod (8) is rotatably connected inside the mounting bracket (7). Two movable seats (9) are threadedly sleeved on the surface of the clamping threaded rod (8). Clamping components are fixedly connected to the front of the two movable seats (9). Limiting components are provided on both sides of the base (1).

2. A main rotor blade outboard section replacement apparatus for a helicopter as set forth in claim 1, characterized in that, The clamping assembly includes clamping plates (10) fixedly connected to the front of the two movable seats (9). Several first threaded holes are opened on the opposite side of the two clamping plates (10). Adjusting bolts (11) are fixedly connected inside the several first threaded holes. A positioning block (12) is fixedly connected to one end of the adjusting bolt (11). A rubber pad is provided on the surface of the positioning block (12). A knob (13) is fixedly connected to the other end of the adjusting bolt (11). The internal threads of the two movable seats (9) are opposite.

3. A main rotor blade outboard segment replacement apparatus as set forth in claim 1, further characterized by: The limiting component includes storage slots on both sides of the base (1). Movable plates (14) are movably connected inside the two storage slots. A second threaded hole is provided on the upper surface of the other end of the movable plate (14). A positioning bolt (15) is threadedly connected inside the second threaded hole. A positioning plate (16) is rotatably connected to the lower end of the positioning bolt (15) through a bearing. A handle (17) is fixedly connected to the upper end of the positioning bolt (15).

4. A main rotor blade outboard section replacement apparatus for a helicopter as set forth in claim 3, wherein The upper surface of the base (1) has a limiting groove, and the upper surface of the other end of the movable plate (14) is fixedly connected with a limiting block (18) that is adapted to the limiting groove. Several moving wheels (19) are fixedly connected to the lower surface of the base (1).

5. The apparatus of claim 1 wherein, The support base (2) is internally fixedly connected to a first servo motor (20), and the power end of the first servo motor (20) is fixedly connected to the lifting threaded screw (4).

6. The helicopter main rotor blade rear section replacement equipment according to claim 1, characterized in that, The upper ends of the two mounting brackets (7) are fixedly connected to a second servo motor (21), and the power ends of the two second servo motors (21) are respectively connected to two clamping threaded screws (8).

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