Helicopter tail rotor blade disassembling and assembling support convenient to adjust

Abstract

The utility model discloses a support convenient to adjust and used for disassembling and assembling a helicopter tail rotor blade, belongs to the technical field of supports used for disassembling and assembling helicopter tail rotor blades, and aims at solving the problems that in the prior art, the height of a tail rotor blade support is not easy to adjust, and practicability is low. The two fixing frames are symmetrically distributed and fixed to the two sides of the top face of the bottom frame. Through the arrangement of the underframe, the fixing frame, the supporting plate, the clamping groove and other structures, the tail rotor blade of the helicopter is more convenient to place during disassembly, assembly and overhaul, through the cooperation of the lifting unit, the arc-shaped supporting frame and the supporting plate, the height of the supporting plate is convenient to adjust, so that the tail rotor blade disassembling and assembling device is suitable for disassembly and assembly of tail rotor blades of helicopters of different specifications, the use convenience of the device is improved, and the working efficiency is improved. And meanwhile, through the arrangement of an angle adjusting mechanism, the angle of the supporting plate can be conveniently adjusted to a certain degree, so that the practicability and convenience of the tail rotor blade during disassembly, assembly and placement are improved, and the adjusted supporting plate is limited through a limiting assembly.

Description

Technical Field

[0001] The utility model belongs to the technical field of a bracket for disassembling and assembling a helicopter tail rotor blade, and in particular relates to a bracket for disassembling and assembling a helicopter tail rotor blade which is easy to adjust. Background Art

[0002] The helicopter tail rotor blade is an important part of the helicopter tail rotor system and is located at the tail of the helicopter. It is a slender, wing-shaped component installed on the tail rotor hub. It generates lateral force through rotation and plays a key role in balancing and controlling the flight of the helicopter.

[0003] In the prior art, when the helicopter engine drives the main rotor to rotate, it will apply a torque in the opposite direction to the fuselage. In order to prevent the fuselage from rotating in the direction of the main rotor and keep the fuselage stable, the tail rotor system needs to generate a thrust in the opposite direction to offset this torque. The tail rotor system is an important component to ensure the flight stability and maneuverability of the helicopter. It needs to be regularly inspected and maintained during use. The disassembly and assembly of the tail rotor blades is an important part of its work. The tail rotor blade disassembly and assembly bracket is required for disassembly and assembly. The bracket facilitates the placement of the tail rotor blades, but the height of the bracket is generally limited and difficult to adjust. Therefore, when encountering helicopters of different sizes, a higher bracket needs to be replaced, which reduces the practicality of the bracket and the work efficiency of the staff.

[0004] Therefore, there is a need for a bracket for disassembling and assembling a helicopter tail rotor blade that is easy to adjust, so as to solve the problem in the prior art that the height of the tail rotor blade bracket is difficult to adjust and the practicality is low. Utility Model Content

[0005] The utility model aims to provide a bracket for disassembling and assembling a tail rotor blade of a helicopter which is easy to adjust, so as to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above object, the utility model provides the following technical solution: a bracket for disassembling and assembling a tail rotor blade of a helicopter, which is easy to adjust, comprises a base frame and two fixing frames, wherein the two fixing frames are symmetrically distributed and fixed on both sides of the top surface of the base frame, and further comprises:

[0007] A fixing rod, two fixing rods are provided and symmetrically distributed and fixed between two fixing frames, the top surfaces of the two fixing rods are movably penetrated by two movable rods, a U-shaped fixing block is fixed to the top of each movable rod, an arc-shaped supporting frame is fixed to the top surface of the two U-shaped fixing blocks on one side, an arc-shaped sliding plate is slidably connected to the inner wall of the two arc-shaped supporting frames, connecting blocks are fixed to the two end surfaces of the arc-shaped sliding plate, a supporting plate is fixed to the top surface of the two connecting blocks on one side, and the surface of the supporting plate is evenly provided with card grooves;

[0008] A lifting unit is arranged on the top surface of the base frame, and the lifting unit is used to adjust the lifting of the support plate. An angle adjustment mechanism matched with the arc-shaped slide plate is arranged below the two arc-shaped support frames.

[0009] It should be noted that the lifting unit includes:

[0010] A connecting plate is fixed between two arc-shaped supporting frames, a mounting seat is fixed in the middle of the bottom surface of the connecting plate, a top block is fixed on the bottom surface of the mounting seat, a fixing plate is fixed in the middle of the inner side of the base frame, a hydraulic rod is fixed in the middle of the top surface of the fixing plate, and the telescopic end of the hydraulic rod is fixed to the bottom surface of the top block.

[0011] It is further worth noting that the angle adjustment mechanism comprises:

[0012] A rotating shaft, the rotating shaft is rotatably mounted on the inner side of the mounting seat, two gears are fixedly sleeved on the outer surface of the rotating shaft, arc-shaped through holes are opened on the bottom surfaces of the two arc-shaped support frames, and a plurality of teeth are evenly fixed on the bottom surfaces of the two arc-shaped slide plates corresponding to the arc-shaped through holes, and the gears are meshed with the teeth for transmission;

[0013] The turntable is fixed to the end of the rotating shaft, and a limiting component matching with the turntable is arranged on one side of one of the arc-shaped supporting frames.

[0014] It should be further explained that the limit assembly includes:

[0015] An L-shaped limit plate is fixed to the outer surface of one of the arc-shaped support frames, the rotating shaft movably passes through the L-shaped limit plate, a plurality of insertion holes are opened on the surface of the turntable, an insertion rod movably passes through the inside of the insertion hole, and the end of the insertion rod is plugged into the surface of the L-shaped limit plate.

[0016] As a preferred implementation, an elastic connecting rope is fixed to the top surface of the L-shaped limiting plate, an end of the elastic connecting rope is fixed to the outer surface of the insertion rod, and a handle is fixed to the surface edge of the turntable.

[0017] As a preferred implementation, a placement box is fixed on the inner side of the base frame, a cover plate is hinged on the top surface of the placement box, and four universal wheels distributed in a rectangular shape are fixedly mounted on the bottom surface of the base frame.

[0018] Compared with the prior art, the utility model provides a conveniently adjustable helicopter tail rotor blade disassembly bracket, which has at least the following beneficial effects:

[0019] (1) The arrangement of the base frame, the fixing frame, the support plate, the card slot and other structures makes it easier to place the tail rotor blade of the helicopter during disassembly, assembly and maintenance. The coordination of the lifting unit with the arc-shaped support frame and the support plate facilitates the adjustment of the height of the support plate, thereby adapting to the disassembly and assembly of the tail rotor blades of helicopters of different specifications, improving the convenience of using the device. At the same time, the arrangement of the angle adjustment mechanism facilitates the adjustment of the angle of the support plate, thereby improving the practical convenience of the tail rotor blade during disassembly, assembly and placement. The adjusted support plate is limited by the limit assembly.

[0020] (2) The insertion rod is limited by an elastic connecting rope to prevent the insertion rod from being lost. The placement box is convenient for placing daily operation tools, and the universal wheels facilitate the movement of the entire rack. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0022] Figure 2 This is a structural schematic diagram of another viewing angle of the utility model;

[0023] Figure 3 It is a partial structural schematic diagram of the utility model;

[0024] Figure 4 It is a schematic diagram of the arc-shaped slide plate and the tooth structure of the utility model.

[0025] In the figure: 1, base frame; 2, fixing frame; 3, fixing rod; 4, arc-shaped supporting frame; 5, arc-shaped slide plate; 6, connecting block; 7, supporting plate; 8, slot; 9, arc-shaped through hole; 10, U-shaped fixing block; 11, movable rod; 12, fixing plate; 13, hydraulic rod; 14, L-shaped limit plate; 15, teeth; 16, gear; 17, top block; 18, rotating shaft; 19, connecting plate; 20, mounting seat; 21, turntable; 22, socket; 23, plug rod; 24, elastic connecting rope; 25, placement box; 26, cover plate. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] See also Figure 1-4 The utility model provides a bracket for disassembling and assembling a tail rotor blade of a helicopter, which is easy to adjust, and comprises a base frame 1 and two fixing frames 2, wherein the two fixing frames 2 are symmetrically distributed and fixed on both sides of the top surface of the base frame 1, and further comprises:

[0028] A fixing rod 3, two fixing rods 3 are provided and symmetrically distributed and fixed between the two fixing frames 2, the top surfaces of the two fixing rods 3 are movably penetrated by two movable rods 11, a U-shaped fixing block 10 is fixed to the top of each movable rod 11, an arc-shaped support frame 4 is fixed to the top surface of the two U-shaped fixing blocks 10 on one side, an arc-shaped slide plate 5 is slidably connected to the inner wall of the two arc-shaped support frames 4, two end surfaces of the arc-shaped slide plate 5 are fixed with connecting blocks 6, and the top surfaces of the two connecting blocks 6 on one side are fixed with a support plate 7, and the surface of the support plate 7 is evenly provided with card grooves 8;

[0029] The lifting unit is arranged on the top surface of the base frame 1 , and the support plate 7 is lifted and lowered by the lifting unit. An angle adjustment mechanism matched with the arc-shaped slide plate 5 is arranged below the two arc-shaped support frames 4 .

[0030] Further as Figure 1 and Figure 2 As shown, it is worth noting that the lifting unit includes:

[0031] A connecting plate 19 is fixed between two arc-shaped support frames 4, a mounting seat 20 is fixed in the middle of the bottom surface of the connecting plate 19, a top block 17 is fixed on the bottom surface of the mounting seat 20, a fixing plate 12 is fixed in the middle of the inner side of the base frame 1, a hydraulic rod 13 is fixed in the middle of the top surface of the fixing plate 12, and the telescopic end of the hydraulic rod 13 is fixed to the bottom surface of the top block 17.

[0032] Further as Figure 2 and Figure 3 As shown, it is worth noting that the angle adjustment mechanism includes:

[0033] The rotating shaft 18 is rotatably mounted on the inner side of the mounting seat 20. Two gears 16 are fixedly sleeved on the outer surface of the rotating shaft 18. The bottom surfaces of the two arc-shaped support frames 4 are provided with arc-shaped through holes 9. The bottom surfaces of the two arc-shaped slide plates 5 are evenly fixed with a plurality of teeth 15 corresponding to the arc-shaped through holes 9. The gears 16 are meshed with the teeth 15 for transmission.

[0034] The turntable 21 is fixed to the end of the rotating shaft 18 , and a limiting component matched with the turntable 21 is provided on one side of the arc-shaped supporting frame 4 .

[0035] It is worth noting that, by setting the angle adjustment mechanism, the angles of the two support plates 7 can be adjusted within a small range.

[0036] Further as Figure 3 As shown, it is worth noting that the limit assembly includes:

[0037] An L-shaped limit plate 14 is fixed to the outer surface of one of the arc-shaped support frames 4, and the rotating shaft 18 movably passes through the L-shaped limit plate 14. A plurality of insertion holes 22 are provided on the surface of the turntable 21, and an insertion rod 23 movably passes through the inside of the insertion hole 22, and the end of the insertion rod 23 is plugged into the surface of the L-shaped limit plate 14.

[0038] Further as Figure 3 As shown, it is worth explaining in detail that an elastic connecting rope 24 is fixed to the top surface of the L-shaped limiting plate 14, and the end of the elastic connecting rope 24 is fixed to the outer surface of the insertion rod 23. The elastic connecting rope 24 is used to limit the insertion rod 23 to prevent the insertion rod 23 from being lost; a handle is fixed to the surface edge of the turntable 21, and the handle facilitates the rotation of the turntable 21.

[0039] Further as Figure 1 As shown, it is worth explaining in detail that a placement box 25 is fixed on the inner side of the base frame 1, and a cover plate 26 is hinged on the top surface of the placement box 25, so that daily operation tools can be placed conveniently through the placement box 25; four universal wheels distributed in a rectangular shape are fixedly installed on the bottom surface of the base frame 1, and the universal wheels facilitate the movement of the entire shelf.

[0040] This scheme has the following working process: according to the angle at which the helicopter tail rotor blade stops, the angle of the support plate 7 is adjusted to a certain extent, and the turntable 21 is driven to rotate by the handle, thereby driving the rotating shaft 18 to rotate in the mounting seat 20. The rotating shaft 18 drives the two gears 16 to rotate while rotating, so that the arc-shaped slide plate 5 rotates in the arc-shaped support frame 4 under the meshing of the teeth 15 and the gears 16, thereby driving the support plate 7 to deflect at a certain angle, and then the hydraulic rod 13 pushes the top block 17 to move upward, thereby driving the two arc-shaped support frames 4 to move upward through the connecting plate 19, wherein the arc-shaped support frame 4 drives the movable rod 11 to slide in the fixed rod 3 when moving, thereby limiting the arc-shaped support frame 4, and then adjusting the height of the support plate 7, providing convenience for the disassembly and assembly of the helicopter tail rotor blade.

[0041] The hydraulic rod 13 can be purchased on the market. The hydraulic rod 13 is equipped with a power supply, which is a mature technology in this field and has been fully disclosed, so it is not repeated in the specification.

[0042] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

[0043] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A bracket for disassembling and assembling a tail rotor blade of a helicopter, which is easy to adjust, comprises a base frame (1) and two fixing frames (2), wherein the two fixing frames (2) are symmetrically distributed and fixed on both sides of the top surface of the base frame (1), and is characterized in that: Also includes: A fixed rod (3), wherein two fixed rods (3) are provided and symmetrically distributed and fixed between the two fixed frames (2), the top surfaces of the two fixed rods (3) are movably penetrated by two movable rods (11), a U-shaped fixed block (10) is fixed to the top of each movable rod (11), an arc-shaped support frame (4) is fixed to the top surface of the two U-shaped fixed blocks (10) on one side, an arc-shaped slide plate (5) is slidably connected to the inner walls of the two arc-shaped support frames (4), two end surfaces of the arc-shaped slide plate (5) are fixed with connecting blocks (6), and the top surfaces of the two connecting blocks (6) on one side are fixed with a support plate (7), and the surface of the support plate (7) is evenly provided with card slots (8); A lifting unit is provided on the top surface of the base frame (1), and the lifting and lowering of the support plate (7) is adjusted by the lifting unit. An angle adjustment mechanism that cooperates with the arc-shaped slide plate (5) is provided below the two arc-shaped support frames (4).

2. The easily adjustable helicopter tail rotor blade disassembly bracket according to claim 1, characterized in that: The lifting unit comprises: A connecting plate (19) is fixed between two arc-shaped support frames (4); a mounting seat (20) is fixed in the middle of the bottom surface of the connecting plate (19); a top block (17) is fixed in the bottom surface of the mounting seat (20); a fixing plate (12) is fixed in the middle of the inner side of the base frame (1); a hydraulic rod (13) is fixed in the middle of the top surface of the fixing plate (12); and a telescopic end of the hydraulic rod (13) is fixed to the bottom surface of the top block (17).

3. The easily adjustable helicopter tail rotor blade disassembly bracket according to claim 2, characterized in that: The angle adjustment mechanism comprises: A rotating shaft (18), the rotating shaft (18) is rotatably mounted on the inner side of the mounting seat (20), two gears (16) are fixedly sleeved on the outer surface of the rotating shaft (18), arc-shaped through holes (9) are opened on the bottom surfaces of the two arc-shaped support frames (4), a plurality of teeth (15) are evenly fixed on the bottom surfaces of the two arc-shaped slide plates (5) corresponding to the arc-shaped through holes (9), and the gears (16) are meshed with the teeth (15) for transmission; A rotating disk (21) is fixed to the end of the rotating shaft (18), wherein a limiting component matching the rotating disk (21) is provided on one side of one of the arc-shaped supporting frames (4).

4. The easily adjustable helicopter tail rotor blade disassembly bracket according to claim 3, characterized in that: The limiting component comprises: An L-shaped limit plate (14) is fixed to the outer surface of one of the arc-shaped support frames (4); the rotating shaft (18) movably passes through the L-shaped limit plate (14); a plurality of insertion holes (22) are provided on the surface of the rotating disk (21); an insertion rod (23) movably passes through the interior of the insertion hole (22); and an end of the insertion rod (23) is plugged into the surface of the L-shaped limit plate (14).

5. The easily adjustable helicopter tail rotor blade disassembly bracket according to claim 4, characterized in that: An elastic connecting rope (24) is fixed to the top surface of the L-shaped limiting plate (14), an end of the elastic connecting rope (24) is fixed to the outer surface of the insertion rod (23), and a handle is fixed to the surface edge of the rotating disk (21).

6. The easily adjustable helicopter tail rotor blade disassembly bracket according to claim 1, characterized in that: A placement box (25) is fixed on the inner side of the base frame (1), a cover plate (26) is hingedly connected to the top surface of the placement box (25), and four universal wheels distributed in a rectangular shape are fixedly mounted on the bottom surface of the base frame (1).

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