Dismounting device for helicopter main rotor speed reducer input flange

Abstract

The utility model provides a dismounting device for an input flange of a main rotor speed reducer of a helicopter, which belongs to the technical field of input flanges and comprises a combined mechanism, the combined mechanism comprises a flange plate, the flange plate is provided with a bottom stabilizing mechanism and a rotary dismounting mechanism in a matched manner, and the rotary dismounting mechanism comprises a fastening screw matched with the flange plate. The surface of the fastening screw is sleeved with an attaching disc base, a sleeve is installed at the top of the attaching disc base, a threaded column is arranged on the inner side of the sleeve in a matched mode, and through the matched arrangement of the combination mechanism, the bottom stabilizing mechanism and the rotary disassembling mechanism, the flange plate can be rotationally disassembled and fixed through the sleeving of the fastening screw and the attaching disc base. The top of the flange plate can make contact with the attaching plate base, the end face of the flange plate cannot loosen in the dismounting process, the sleeve can drive the attaching plate base to move through cooperation of the sleeve and the threaded column, and the bottom of the flange plate cannot slip easily through sleeving of the inserting column and the locking ring.

Description

Technical Field

[0001] This utility model belongs to the field of input flange technology, specifically relating to a disassembly device for the input flange of a helicopter main rotor reducer. Background Technology

[0002] The flange of the main rotor reducer is used to transmit power to the rotor shaft through a flexible coupling. This design ensures that the output flange of the main rotor reducer can effectively transmit power to the rotor system. Furthermore, the flange connection method is as follows: the output flange of the main rotor reducer transmits power to the rotor shaft through components such as a flexible coupling and a torque balance. This connection method ensures the reliability and safety of the transmission system.

[0003] Referring to the helicopter maintenance manual, the main rotor reducer input flange and the main rotor reducer input gear are tightly fitted. Since the input flange and input gear are rotating parts and are the power transmission hub, the disassembly device must ensure the safety of the input flange and input gear during disassembly. Therefore, during the disassembly process, it is necessary not only to ensure the condition of the input flange and ensure the smooth disassembly process, but also to ensure that the input flange is removed evenly and to fix the input flange in place to prevent rotation. Utility Model Content

[0004] The purpose of this invention is to provide a disassembly device for the input flange of a helicopter main rotor gearbox, which aims to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a combination mechanism is included, the combination mechanism includes a flange, the flange is equipped with a bottom stabilizing mechanism and a screw-off mechanism, the screw-off mechanism includes a fastening screw adapted to be installed on the flange, a fitting plate seat is sleeved on the surface of the fastening screw, a sleeve is installed on the top of the fitting plate seat, and a threaded post is fitted on the inner side of the sleeve.

[0006] As a preferred embodiment of this utility model, the threaded post is provided with a bottom stabilizing mechanism, the bottom stabilizing mechanism including an insert post adapted to be installed on the end face of the threaded post, and a locking ring is sleeved on the outer surface of the insert post.

[0007] As a preferred embodiment of this utility model, a gear shaft is adapted to be installed on one side of the insertion post, the outer surface of the gear shaft is provided with an inner ring seat, and a fixed outer plate is sleeved on the outer side of the inner ring seat.

[0008] As a preferred embodiment of this utility model, the lower surface of the flange is provided with an alignment seat, and the outer side of the alignment seat is adapted to be installed with the inner ring seat.

[0009] As a preferred embodiment of this utility model, a side rod is adapted to be installed on the side of the sleeve, and the placement plane of the side rod is perpendicular to the placement plane of the sleeve.

[0010] As a preferred embodiment of this utility model, the upper surface of the threaded column is provided with a top cap, and a rotating rod is fixedly installed on the outer side of the top cap.

[0011] In a preferred embodiment of this utility model, the number of fastening screws is several, and the several fastening screws are arranged in a ring on the flange, and the holes and slots of the flange correspond one-to-one with the holes and slots of the mating plate.

[0012] In a preferred embodiment of this utility model, the alignment seat is an integrally formed circular disc seat, and the center of the alignment seat is consistent with the center of the inner ring seat.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: the combination of the combined mechanism, the bottom stabilizing mechanism, and the screw-off mechanism allows the flange to be rotated and disassembled. The fastening screws and the fitting plate seat are fixed together, allowing the top of the flange to contact the fitting plate seat, preventing the end face of the flange from loosening during disassembly. The cooperation between the sleeve and the threaded post allows the sleeve to move the fitting plate seat, allowing the flange to be smoothly screwed out. The fitting of the insert post and the locking ring allows the insert post to be stably engaged with the gear shaft, preventing the bottom of the flange from slipping during rotational disassembly. The cooperation between the inner ring seat and the fixed outer plate prevents excessive compression of the flange side. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of this utility model, the 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. Among them:

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the structure of the parts that enable the flange to be stably unscrewed in this utility model;

[0017] Figure 3 This is a schematic diagram of the structure of the parts that enable the flange insertion and removal effect in this utility model;

[0018] Figure 4 This is a side view of some parts in this utility model;

[0019] Figure 5In this utility model Figure 2 A magnified view of part A in the diagram.

[0020] In the diagram: 100, assembly mechanism; 101, flange; 102, alignment seat; 103, internal ring seat; 104, fixed outer plate; 200, bottom stabilizing mechanism; 201, insert post; 202, gear shaft; 203, locking ring; 300, screwing mechanism; 301, fastening screw; 302, fitting plate seat; 303, sleeve; 304, threaded post; 305, side rod; 306, top cap; 307, rotating rod. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0022] This utility model embodiment provides a disassembly device for the input flange of a helicopter main rotor gearbox, including a combination mechanism 100; exemplarily, such as... Figures 1-3 As shown.

[0023] The combined mechanism 100 includes a flange 101, which is equipped with a bottom stabilizing mechanism 200 and a screw-off mechanism 300. The screw-off mechanism 300 includes a fastening screw 301 that is adapted to be installed on the flange 101. A fitting plate seat 302 is sleeved on the surface of the fastening screw 301. A sleeve 303 is installed on the top of the fitting plate seat 302. A threaded post 304 is fitted on the inner side of the sleeve 303.

[0024] The threaded post 304 is equipped with a bottom stabilizing mechanism 200, which includes an insert post 201 that is adapted to be installed on the end face of the threaded post 304, and a locking ring 203 is sleeved on the outer surface of the insert post 201.

[0025] A gear shaft 202 is adapted to be installed on one side of the insert 201. The outer surface of the gear shaft 202 is provided with an inner ring seat 103, and a fixed outer plate 104 is sleeved on the outer side of the inner ring seat 103.

[0026] Specifically, through the combined arrangement of the combination mechanism 100, the bottom stabilizing mechanism 200, and the unscrewing mechanism 300, the flange 101 can be rotated and disassembled. The fastening screw 301, when fitted with the mounting plate 302, allows the top of the flange 101 to contact the mounting plate 302, preventing the flange 101 from loosening during disassembly. The sleeve 303, when fitted with the threaded post 304, allows the sleeve 303 to move the mounting plate 302, enabling the flange 101 to be smoothly unscrewed. The insertion post 201, fitted with the locking ring 203, allows the insertion post 201 to be stably engaged with the gear shaft 202, preventing the bottom of the flange 101 from slipping during rotational disassembly. The inner ring seat 103, when fitted with the fixed outer plate 104, prevents excessive pressure on the sides of the flange 101.

[0027] The lower surface of the flange 101 is provided with a positioning seat 102; for example, such as Figures 2-4 As shown.

[0028] The outer side of the positioning seat 102 is adapted to the inner ring seat 103.

[0029] A side rod 305 is adapted to be installed on the side of the sleeve 303, and the placement plane of the side rod 305 is perpendicular to the placement plane of the sleeve 303.

[0030] The upper surface of the threaded post 304 is provided with a top cap 306, and a rotating rod 307 is fixedly installed on the outer side of the top cap 306.

[0031] Specifically, by cooperating with the seat 102 and the flange 101, the flange 101 can be stably screwed out from the inner ring seat 103, reducing the tilting and rotation of the flange 101. The vertical placement of the side rod 305 and the sleeve 303 ensures that the insertion post 201 at the bottom of the threaded post 304 abuts and is fixed in a predetermined position, helping to stably disassemble the flange 101.

[0032] The number of fastening screws 301 is several; for example, such as Figures 3-5 As shown.

[0033] The fastening screws 301 are arranged in a ring on the flange 101, and the holes and slots of the flange 101 correspond one-to-one with the holes and slots of the mating plate 302.

[0034] The alignment seat 102 is an integrally formed circular disc seat, and the center of the alignment seat 102 is consistent with the center of the inner ring seat 103.

[0035] Specifically, the ring-shaped distribution of several fastening screws 301 enhances the contact between the flange 101 and the mating plate seat 302, ensuring that the surface of the flange 101 remains horizontal, which is beneficial for stable disassembly.

[0036] Working principle: First, install the insert 201 and the bottom of the threaded post 304. Then, rotate the rotating rod 307 to make the threaded post 304, which is sleeved in the inner cavity, rotate synchronously, so that the inner cavity of the insert 201 is inserted and fixed to the surface of the gear shaft 202, which is used to stabilize the bottom of the flange 101.

[0037] Next, a sleeve 303 is fitted onto the surface of the threaded post 304, and a fitting plate seat 302 is fitted onto the bottom of the sleeve 303. Then, the flange 101 is fixedly installed to the fitting plate seat 302 using fastening screws 301. The flange 101 is rotated out from the inner ring seat 103. Then, the side rod 305 on the side of the sleeve 303 is braked. By rotating the top cap 306, the sleeve 303 is displaced and slid out from the surface of the threaded post 304. Finally, the fastening screws 301 are removed to separate the flange 101 from the fitting plate seat 302, completing the disassembly of the flange 101.

[0038] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., changes in the size, dimensions, structure, shape and proportion of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise altered, and the nature or number or position of discrete elements may be changed or altered. Therefore, all such modifications are intended to be included within the scope of this utility model. The order or sequence of any process or method steps may be changed or rearranged according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and not only structural equivalents but also equivalent structures. Without departing from the scope of this invention, other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments. Therefore, this invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0039] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features that are not relevant to the best mode of carrying out the present invention as currently considered, or those features that are not relevant to implementing the present invention) may be omitted.

[0040] It should be understood that numerous specific implementation decisions can be made during the development of any practical implementation, such as in any engineering or design project. Such development efforts may be complex and time-consuming, but for those skilled in the art who benefit from this disclosure, the development effort will be a routine work of design, manufacturing, and production without requiring much experimentation.

[0041] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A disassembly device for the input flange of a helicopter main rotor gearbox, characterized in that: The assembly includes a combination mechanism (100), which includes a flange (101). The flange (101) is equipped with a bottom stabilizing mechanism (200) and a screw-off mechanism (300). The screw-off mechanism (300) includes a fastening screw (301) adapted to be installed on the flange (101). A fitting plate seat (302) is sleeved on the surface of the fastening screw (301). A sleeve (303) is installed on the top of the fitting plate seat (302). A threaded post (304) is fitted on the inner side of the sleeve (303). By fastening the screws and securing them to the mounting plate, the top of the flange can contact the mounting plate, preventing the flange face from loosening during disassembly. The fit between the sleeve and the threaded post allows the sleeve to move the mounting plate, allowing the flange to be smoothly unscrewed. The fitting of the insert post and the locking ring ensures a stable engagement between the insert post and the gear shaft, preventing the bottom of the flange from slipping during rotational disassembly.

2. The disassembly device for the input flange of a helicopter main rotor gearbox according to claim 1, characterized in that: The threaded post (304) is equipped with a bottom stabilizing mechanism (200), which includes a plug (201) adapted to the end face of the threaded post (304) and a locking ring (203) is sleeved on the outer surface of the plug (201).

3. The disassembly device for the input flange of a helicopter main rotor gearbox according to claim 2, characterized in that: A gear shaft (202) is adapted to be installed on one side of the insert (201). The outer surface of the gear shaft (202) is provided with an inner ring seat (103), and a fixed outer plate (104) is sleeved on the outer side of the inner ring seat (103).

4. The disassembly device for the input flange of a helicopter main rotor gearbox according to claim 1, characterized in that: The lower surface of the flange (101) is provided with a positioning seat (102), and the outer side of the positioning seat (102) is adapted to be installed with the inner ring seat (103).

5. A disassembly device for the input flange of a helicopter main rotor gearbox according to claim 1, characterized in that: A side rod (305) is adapted to be installed on the side of the sleeve (303), and the placement plane of the side rod (305) is perpendicular to the placement plane of the sleeve (303).

6. The disassembly device for the input flange of a helicopter main rotor gearbox according to claim 1, characterized in that: The upper surface of the threaded column (304) is provided with a top cap (306), and a rotating rod (307) is fixedly installed on the outer side of the top cap (306).

7. The disassembly device for the input flange of a helicopter main rotor gearbox according to claim 1, characterized in that: The number of fastening screws (301) is several, and the several fastening screws (301) are arranged in a ring on the flange (101), and the holes and slots of the flange (101) correspond one-to-one with the holes and slots of the mating plate seat (302).

8. A disassembly device for the input flange of a helicopter main rotor gearbox according to claim 4, characterized in that: The alignment seat (102) is an integrally formed circular disc seat, and the center of the alignment seat (102) is consistent with the center of the inner ring seat (103).

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