High-stability composite base frame of control moment gyroscope

Abstract

The invention provides a high-stability composite base frame of a control moment gyroscope. The high-stability composite base frame comprises a shaft hole buried block, an upper end frame, a lower end frame, an internal supporting module, a carbon fiber skin assembly and a carbon fiber cap, the shaft hole embedded blocks are installed on the two sides of the lower end frame and are symmetrically arranged in the long axis direction of the control moment gyroscope, and the two ends of the upper end frame are installed on the side portions of the two shaft hole embedded blocks respectively; an internal supporting module is installed between the lower end frame and the upper end frame to form a base frame structure, the carbon fiber skin assembly wraps the inner side and the outer side of the base frame structure, and the carbon fiber cap covers the top of the upper end frame and the top of the shaft hole embedded block. The upper end frame and the lower end frame which are split and the carbon fiber internal supporting module are adopted, the supporting function is achieved, the weight is reduced, and the mechanical continuity of the base frame is considered; the coating of the inner and outer skins forms an integral closed structure; and the metal matrix composite shaft hole embedded block is matched, so that the overall rigidity and the shape preserving capacity of the composite base frame are improved, and the precision stability of a shaft hole system of the base frame is improved.

Description

Technical Field

[0001] The invention relates to the technical field of control moment gyroscope base frame structure optimization, and in particular to a control moment gyroscope high-stability composite base frame. Background Art

[0002] The control moment gyro supplies rotational energy to the satellite through the conservation of angular momentum, thereby achieving the purpose of satellite attitude adjustment. Due to the increasing requirements for the satellite's loading capacity and attitude adjustment accuracy, the application of high-torque output control moment gyro of the shaft-hole system is becoming more and more widespread. Since the control moment gyro is usually used in a group system, the resulting structural lightweight is imminent, and at the same time, high requirements are placed on the stiffness and coaxial accuracy of the shaft-hole system of its bearing structure.

[0003] Patent document with publication number CN202541847U discloses a moment gyro substructure, which is made of aluminum alloy metal casting. The substructure supports the third mounting surface with the first and second supporting surfaces, and improves the overall rigidity through the connecting surface. However, the structure is only suitable for small satellites, and has no shaft hole installation design, and is not suitable for the installation of moment gyros with rotors and frame rotation.

[0004] Patent document with publication number CN203010161U discloses an annular frame of a magnetically levitated controlled moment gyroscope. Although it is designed with symmetrical circular holes, it is made of metal material, and even weight-reducing grooves and reinforcing ribs are used on the radial annular surface; it has a lot of room for optimization in terms of structural weight, stiffness, and coaxiality performance indicators of the two shaft openings. Summary of the invention

[0005] In view of the defects in the prior art, an object of the present invention is to provide a highly stable composite base frame for a control moment gyroscope.

[0006] The high-stability composite base frame of the control moment gyro provided by the present invention comprises an axial hole embedding block, an upper end frame, a lower end frame, an internal support module, a carbon fiber skin component and a carbon fiber cap;

[0007] There are two shaft hole embedded blocks, which are respectively installed on both sides of the lower end frame, and the two shaft hole embedded blocks are symmetrically arranged on both sides of the rotor rotation center point along the long axis direction of the control moment gyro, and the two ends of the upper end frame are respectively installed on the sides of the two shaft hole embedded blocks;

[0008] A carbon fiber internal support module is installed between the lower end frame and the upper end frame. The lower end frame, the upper end frame, the internal support module and the shaft hole buried block together form a base frame structure. The carbon fiber skin component is covered on both the inner and outer sides of the base frame structure, and the carbon fiber cap covers the top of the upper end frame and the top of the shaft hole buried block.

[0009] Preferably, an axial hole matching the long axis of the control moment gyro is provided in the middle of the axial hole buried block, and two side surfaces of the axial hole buried block are parallel to each other;

[0010] The shaft hole buried block is provided with an upper slot and a lower slot, the upper slot is symmetrically arranged at the upper part of the two side surfaces of the shaft hole buried block, the lower slot is evenly distributed on the bottom surface of the shaft hole buried block, and a lightening slot is opened on the top of the shaft hole buried block;

[0011] The shaft hole buried block is installed on the top of the lower end frame through the lower slot, and the end of the upper end frame is inserted into the upper slot arranged on the side of the shaft hole buried block, and the upper slot and the lower slot are both straight slots.

[0012] Preferably, the outer side surface of the shaft hole buried block is provided with a plurality of mounting protrusions, and the plurality of mounting protrusions are evenly distributed on the outer side of the shaft hole along the circumference of the shaft hole in the shaft hole buried block, and the mounting protrusions are used to install an external motor;

[0013] The protruding height of the mounting protrusion is greater than the thickness of the carbon fiber skin component, and the mounting protrusion passes through the corresponding through hole on the carbon fiber skin component, and a mounting threaded hole is provided in the middle of the mounting protrusion;

[0014] The bottom of the shaft hole embedded block is the lower end frame plug-in part, which is used to be plugged into the embedded block plug-in groove on the side of the lower end frame. The thickness of the lower end frame plug-in part is smaller than the thickness of the rest of the shaft hole embedded block. The lower slot is arranged at the bottom of the lower end frame plug-in part, and the mounting protrusion on the lower end frame plug-in part is embedded in the protrusion accommodating groove on the side of the embedded block plug-in groove.

[0015] Preferably, a rectangular embedded block plug-in groove for plugging with the bottom of the shaft hole embedded block is provided at the top of the lower end frame, and a first embedded block plug-in connector is provided at the bottom of the embedded block plug-in groove for connecting with the lower slot provided at the bottom of the shaft hole embedded block;

[0016] The top of the lower end frame is provided with a support module lower plug-in slot along its inner edge, both ends of the support module lower plug-in slot are separated from the embedded block plug-in slots on both sides by partitions, and the bottom of the internal support module is plugged into the support module lower plug-in slot;

[0017] The outer edge of the lower end frame is provided with a flat wing plate, the outer sides of the lower plug-in slot of the support module and the embedded block plug-in slot are both provided with skin glue grooves for installing the carbon fiber skin assembly, and the inner side wall of the lower plug-in slot of the support module is provided with a threaded hole for fixing the carbon fiber skin assembly;

[0018] The outer edge of the lower end frame is provided with fixing feet along the circumferential direction for fixing on the external whole-star mounting surface, and both sides of the fixing feet are continuously and integrally connected with the plane wing plate.

[0019] Preferably, there are two upper end frames, which are centrally symmetrically arranged on both sides of the rotor rotation center point along the short axis direction of the control moment gyro, and second buried block plug connectors are arranged at both ends of the upper end frame, which are respectively plugged into the upper slots provided on the side parts of the two shaft hole buried blocks;

[0020] The upper end frame is symmetrical with respect to the rotation center of the rotor in the long axis direction. In the projection from the top view angle, the upper end frame is a minor arc segment structure corresponding to the lower end frame.

[0021] The bottom of the upper end frame is provided with a support module upper plugging groove along its inner edge, and the top of the internal support module is plugged into the support module upper plugging groove.

[0022] Preferably, the internal support module comprises a carbon fiber rectangular support tube and a cross-shaped grid, and the top and bottom ends of the carbon fiber rectangular support tube and the cross-shaped grid are respectively plugged into the support module upper plug-in groove at the bottom of the upper end frame and the support module lower plug-in groove at the top of the lower end frame;

[0023] The bottom end of the carbon fiber rectangular support tube is glued to the lower plug-in groove of the support module, the top end of the carbon fiber rectangular support tube is glued to the upper plug-in groove of the support module, and the middle part of the carbon fiber rectangular support tube is glued to the carbon fiber skin assembly;

[0024] The cross-shaped grid is a square cross-shaped carbon fiber shell, which is glued between the upper plug-in slot of the support module, the lower plug-in slot of the support module, the side of the shaft hole buried block and the side of the carbon fiber rectangular support tube.

[0025] Preferably, the carbon fiber skin assembly comprises an inner skin and an outer skin of equal thickness;

[0026] The inner skin is an integral continuous structure and is adhered to the inner side of the base frame structure by gluing. The outer skin is a left-right split type, including a symmetrical first outer skin, a second outer skin and a transition overlap area. The first outer skin and the second outer skin are adhered to the outer side of the base frame structure by gluing.

[0027] The middle part of the upper end frame and the lower end frame is the maximum radius of the envelope protrusion of the base frame structure, and the transition overlap area is arranged at the maximum radius of the envelope protrusion. The first outer skin and the second outer skin are both connected to the upper end frame and the lower end frame through the transition overlap area by glue and screw reinforcement.

[0028] Preferably, the carbon fiber cap comprises an axial hole buried block carbon fiber cap and an upper end frame carbon fiber cap;

[0029] The carbon fiber cap of the buried block of the shaft hole comprises an arc segment and a plane segment connected to both sides of the arc segment, and the bottom of the carbon fiber cap of the buried block of the shaft hole is provided with a buried block top slot matching the top configuration of the buried block of the shaft hole, and the top of the buried block of the shaft hole is inserted into the buried block top slot;

[0030] The bottom of the upper end frame carbon fiber cap is provided with an upper end frame top slot matching the upper end frame arc segment configuration, and the top of the upper end frame is plugged into the upper end frame top slot.

[0031] Preferably, the top of the shaft hole buried block is glued to the shaft hole buried block carbon fiber cap through an adhesive patch, and both the shaft hole buried block carbon fiber cap and the adhesive patch are provided with through holes corresponding to the threaded holes.

[0032] Preferably, a single-machine installation interface is provided on the base frame, and the single-machine installation interface includes a lower end frame installation interface and an upper end frame installation interface;

[0033] The lower end frame mounting interface is of a boss type and is integrally mounted on the top of the lower end frame. The upper end frame mounting interface is mounted on a boss provided on the outer side of the upper end frame. A mounting plane is formed between the lower end frame mounting interface and the upper end frame mounting interface for mounting an external electric unit. The mounting plane is located outside the carbon fiber skin assembly.

[0034] Compared with the prior art, the present invention has the following beneficial effects:

[0035] 1. The present invention adopts a split upper end frame and a lower end frame, combined with a carbon fiber internal support module between the upper and lower end frames, to achieve the supporting function while reducing the weight year-on-year, taking into account the mechanical continuity and weight control of the base frame, and the plug-in cooperation between the upper and lower end frames and the shaft hole embedded blocks provides a stable base skeleton foundation, and the mutual plug-in form is a reliable connection with a high efficiency and cost-effectiveness, realizing the optimal mechanical force transmission path, and it cooperates with the internal support module and the covering of the inner and outer skins to form an overall closed configuration, thereby improving the overall stiffness and stability of the composite base frame.

[0036] 2. The present invention adopts the technical means of setting a carbon fiber support grid and a carbon fiber rectangular support tube between the upper end frame and the lower end frame. The two are set by adhesive connection. Compared with pure metal, they have better damping performance to reduce the impact of micro-vibration.

[0037] 3. The present invention adopts a carbon fiber cap and a carbon fiber skin on the outside of the base frame, as well as an overall continuous wing panel and reinforcing rib design for the lower end frame, which stabilizes the rigidity of the entire base frame while comprehensively limiting the deformation interference caused by the thermal resistance balance problem, so that the precision stability and rigidity conformal capability of the entire base frame shaft hole system are optimized. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Other features, objects and advantages of the present invention will become more apparent from the detailed description of non-limiting embodiments made with reference to the following drawings:

[0039] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0040] Figure 2 This is a schematic diagram of the structure of the buried block in the central axis hole of the present invention;

[0041] Figure 3 It is a structural schematic diagram of the upper end frame in the present invention;

[0042] Figure 4 It is a structural schematic diagram of the lower end frame in the present invention;

[0043] Figure 5 It is a cross-sectional schematic diagram of the upper end frame, the lower end frame and the carbon fiber skin assembly in the present invention.

[0044] The figure shows:

[0045] Shaft hole buried block 2 Second buried block plug connector 41

[0046] Mounting protrusion 21 Supporting module upper plug-in slot 42

[0047] Upper slot 22 Internal support module 5

[0048] Lower slot 23 Carbon fiber skin component 6

[0049] First lightening groove 24 inner skin 61

[0050] Lower end frame plug-in portion 25 Outer skin 62

[0051] Second lightening groove 26 Carbon fiber cap 7

[0052] Lower frame 3 Upper frame carbon fiber cap 71

[0053] Support module lower plug-in slot 31 Axis hole buried block Carbon fiber cap 72

[0054] Skin glue joint groove 32 Base frame hanging point 8

[0055] Embedded block slot 33 Single machine installation interface 9

[0056] First embedded plug connector 34 Lower end frame installation interface 91

[0057] Protruding table receiving groove 35 upper frame mounting interface 92

[0058] Upper frame 4 DETAILED DESCRIPTION

[0059] The present invention is described in detail below in conjunction with specific embodiments. The following embodiments will help those skilled in the art to further understand the present invention, but are not intended to limit the present invention in any form. It should be noted that, for those of ordinary skill in the art, several changes and improvements can also be made without departing from the concept of the present invention. These all belong to the protection scope of the present invention.

[0060] The present invention discloses a highly stable composite base frame for a controlled moment gyroscope, which adopts a split upper end frame and a lower end frame, combined with a carbon fiber internal support module between the upper and lower end frames, to achieve a supporting function while reducing weight year-on-year, taking into account the mechanical continuity and weight control of the base frame, and taking into account the optimal mechanical force transmission path. Compared with a traditional all-metal configuration frame, the overall rigidity and stability of the base frame are improved while reducing the overall weight year-on-year.

[0061] According to the high stability composite base frame of the control moment gyroscope provided by the present invention, Figure 1 As shown, it includes an axial hole embedded block 2, an upper end frame 4, a lower end frame 3, an internal support module 5, a carbon fiber skin assembly 6 and a carbon fiber cap 7; the axial hole embedded blocks 2 are two, which are respectively installed on both sides of the lower end frame 3, and the two axial hole embedded blocks 2 are symmetrically arranged on both sides of the rotor rotation center point along the long axis direction of the control moment gyro, and the two ends of the upper end frame 4 are respectively installed on the sides of the two axial hole embedded blocks 2; a carbon fiber internal support module 5 is installed between the lower end frame 3 and the upper end frame 4, the lower end frame 3, the upper end frame 4, the internal support module 5 and the axial hole embedded blocks 2 together form a base frame structure, the carbon fiber skin assembly 6 is coated on the inner and outer sides of the base frame structure, and the carbon fiber cap 7 covers the top of the upper end frame 4 and the top of the axial hole embedded block 2.

[0062] The present invention combines the overall base frame with a split upper end frame 4, a lower end frame 3 and an axial hole embedded block 2, and supports the split upper end frame 4 and the lower end frame 3 through an internal support module 5 made of carbon fiber material, thereby taking into account the mechanical continuity and weight control of the base frame. At the same time, the axial hole embedded block of metal-based composite material is adopted to make the axial hole system have excellent rigidity and coaxial accuracy. In the overall configuration, the upper end frame 4, the lower end frame 3 and the axial hole embedded block 2 are plug-in matched to provide a stable base skeleton foundation, and the mutual plug-in form is a reliable connection with high efficiency and cost-effectiveness.

[0063] like Figure 2As shown, the middle part of the shaft hole embedded block 2 is provided with a shaft hole matching the long axis of the control moment gyro, and the two side surfaces of the shaft hole embedded block 2 are parallel to each other; the shaft hole embedded block 2 is provided with an upper slot 22 and a lower slot 23, and the upper slot 22 and the lower slot 23 are both straight slots, and the upper slot 22 is symmetrically arranged at the upper part of the two side surfaces of the shaft hole embedded block 2. Preferably, the upper slot 22 is a structure in which two rectangular slots are arranged in parallel and connected in the middle, and the lower slot 23 is arranged in parallel on the bottom surface of the shaft hole embedded block 2, as shown in FIG. Figure 4 As shown, the shaft hole buried block 2 is plugged and installed with the first buried block plug connector 34 in the buried block plug slot 33 on the lower end frame 3 through the lower slot 23, as shown in FIG. Figure 3 As shown, the end of the upper end frame 4 is provided with a second buried block plug connector 41, and the second buried block plug connector 41 is plugged into the upper slot 22 provided on the side of the shaft hole buried block 2 to complete the installation of the entire base frame. In a preferred example, the top of the shaft hole buried block 2 is provided with a first lightening groove 24, and the side of the shaft hole buried block 2 is provided with a second lightening groove 26 below the upper slot 22;

[0064] like Figure 1 , 2 As shown, the outer side surface of the shaft hole buried block 2 is provided with a plurality of mounting protrusions 21, and the plurality of mounting protrusions 21 are evenly distributed on the outer side of the shaft hole along the circumference of the shaft hole in the shaft hole buried block 2, and the mounting protrusions 21 are used to install an external motor; the protruding height of the mounting protrusions 21 is greater than the thickness of the carbon fiber skin component 6, and the mounting protrusions 21 pass through the corresponding through holes on the carbon fiber skin component 6, and the middle part of the mounting protrusions 21 is provided with mounting threaded holes;

[0065] like Figure 2 As shown, the bottom of the shaft hole embedded block 2 is a lower end frame plug-in portion 25, which is used to be plugged with the embedded block plug-in groove 33 provided on the side of the lower end frame 3. The thickness of the lower end frame plug-in portion 25 is less than the thickness of the rest of the shaft hole embedded block 2, and is used to ensure that the outer surface of the embedded block plug-in groove 33 and the outer surface of the rest of the shaft hole embedded block 2 form a plane after the lower end frame plug-in portion 25 is inserted into the embedded block plug-in groove 33. The lower slot 23 is set at the bottom of the lower end frame plug-in portion 25, as shown in FIG. Figure 4 As shown, a plurality of protrusion surface receiving grooves 35 are provided on the side of the embedded block insertion groove 33. After the lower end frame insertion part 25 is inserted into the embedded block insertion groove 33, the plurality of mounting protrusion surfaces 21 on the lower end frame insertion part 25 are respectively embedded in the corresponding protrusion surface receiving grooves 35.

[0066] like Figure 4As shown, a rectangular embedded block plug-in groove 33 for plugging with the bottom of the shaft hole embedded block 2 is provided on the top of the lower end frame 3, and a first embedded block plug-in joint 34 is provided at the bottom of the embedded block plug-in groove 33 for connecting with the lower slot 23 at the bottom of the shaft hole embedded block 2; when the bottom of the shaft hole embedded block 2 is plugged into the rectangular embedded block plug-in groove 33, a first embedded block plug-in joint 34 is provided at the bottom of the embedded block plug-in groove 33 to simultaneously plug with the lower slot 23 at the bottom of the shaft hole embedded block 2; a support module lower plug-in groove 31 is provided along the inner edge of the top of the lower end frame 3, and both ends of the support module lower plug-in groove 31 are respectively separated from the embedded block plug-in grooves 33 on both sides by partitions, and the bottom of the internal support module 5 is plugged into the support module lower plug-in groove 31; the internal support module 5 is circumferentially arranged between the upper end frame 4 and the lower end frame 3 to form a uniform and reliable support along the circumference of the base frame;

[0067] The outer edge of the lower frame 3 is provided with a flat wing plate, such as Figure 5 As shown, the outside of the support module lower plug-in slot 31 and the embedded block plug-in slot 33 are both provided with skin gluing slots 32 for installing the carbon fiber skin assembly 6, and the inner wall of the support module lower plug-in slot 31 is provided with threaded holes for fixing the carbon fiber skin assembly 6; the outer skin 62 of the carbon fiber skin assembly 6 is circumferentially inserted into the skin gluing slot 32, and is covered on the outside of the axial hole embedded part 2, the upper end frame 4 and the internal support module 5 as a whole, and the inner skin 61 of the carbon fiber skin assembly 6 is fixed to the inner side surface of the overall base frame through the threaded holes on the inner wall of the support module lower plug-in slot 31; the outer edge of the lower end frame 3 is circumferentially provided with fixed legs for fixing to the external whole satellite mounting surface, and the two sides of the fixed legs are continuous and integrally connected to the plane wing panels.

[0068] like Figure 3 As shown, there are two upper end frames 4, which are symmetrically arranged on both sides of the rotor rotation center point along the short axis direction of the control moment gyro, and the two ends of the upper end frame 4 are provided with second buried block plug connectors 41, which are respectively plugged into the upper slots 22 provided on the sides of the two shaft hole buried blocks 2; the upper end frame 4 is symmetrical about the rotor rotation center point in the long axis direction, and in the projection of the top view angle, the upper end frame 4 is a inferior arc segment structure corresponding to the lower end frame 4, and the bottom of the upper end frame 4 is provided with a support module upper plug-in slot 42 along its inner edge, and the top of the internal support module 5 is plugged into the support module upper plug-in slot 42. In the projection along the top view angle, the positions of the support module upper plug-in slot 42, the internal support module 5 and the support module lower plug-in slot 31 correspond to each other.

[0069] The internal support module 5 includes a carbon fiber rectangular support tube and a cross-shaped grid, the top and bottom ends of the carbon fiber rectangular support tube and the cross-shaped grid are respectively inserted into the support module upper plug-in groove 42 at the bottom of the upper end frame 4 and the support module lower plug-in groove 31 at the top of the lower end frame 3; the bottom end of the carbon fiber rectangular support tube is glued to the support module lower plug-in groove 31, the top end of the carbon fiber rectangular support tube is glued to the support module upper plug-in groove 42, and the middle part of the carbon fiber rectangular support tube is glued to the carbon fiber skin assembly; the cross-shaped grid is a square cross-shaped carbon fiber shell, which is glued between the support module upper plug-in groove 42, the support module lower plug-in groove 31, the side of the shaft hole buried block 2 and the side of the carbon fiber rectangular support tube, wherein a partition is provided between the cross-shaped grid and the side of the shaft hole buried block 2, and it is not directly connected to the shaft hole buried block 2. The carbon fiber rectangular support tube and the carbon fiber cross grid are installed between the upper and lower end frames by gluing. Compared with pure metal, it has better damping performance and can effectively reduce the impact of micro-vibration.

[0070] The carbon fiber skin assembly 6 includes an inner skin 61 and an outer skin 62 of equal thickness; the inner skin 61 is an integral continuous structure, and is adhered to the inner side of the base frame structure by gluing; the outer skin 62 is a left-right split type, and includes a symmetrical first outer skin, a second outer skin, and a transition overlap area, and the first outer skin and the second outer skin are adhered to the outer side of the base frame structure by gluing; the middle part of the upper end frame 4 and the lower end frame 3 is the maximum radius of the envelope protrusion of the base frame structure, and the transition overlap area is arranged at the maximum radius of the envelope protrusion, and the thickness and overlap length of the transition overlap area are proportional to the skin, and the first outer skin and the second outer skin are reinforced with glue and screws in the transition overlap area;

[0071] The carbon fiber cap 7 includes an axial hole embedded block carbon fiber cap 72 and an upper end frame carbon fiber cap 71; the axial hole embedded block carbon fiber cap 72 includes an arc segment and a plane segment connected on both sides of the arc segment, and the bottom of the axial hole embedded block carbon fiber cap 72 is provided with an embedded block top slot matching the top configuration of the axial hole embedded block 2, and the top of the axial hole embedded block 2 is plugged into the embedded block top slot; the bottom of the upper end frame carbon fiber cap 71 is provided with an upper end frame top slot matching the arc segment configuration of the upper end frame 4, and the top of the upper end frame 4 is plugged into the upper end frame top slot. The carbon fiber cap 7 covers the top of the base frame after the skin is coated, and is located at the outermost side of the overall structure, and is used to balance the thermal resistance.

[0072] The top of the shaft hole embedded block 2 is symmetrically provided with base frame hanging points 8, the base frame hanging points 8 are threaded holes, the top of the shaft hole embedded block 2 is glued to the shaft hole embedded block carbon fiber cap 72 through an adhesive patch, and the shaft hole embedded block carbon fiber cap 72 and the adhesive patch are both provided with through holes corresponding to the threaded holes. The base frame is provided with a single machine installation interface 9, and the single machine installation interface 9 includes a lower end frame installation interface 91 and an upper end frame installation interface 92; the lower end frame installation interface 91 is a boss type, which is integrally installed on the top of the lower end frame 3, and the upper end frame installation interface 92 is installed on the boss provided on the outer side of the upper end frame 4, and a mounting plane is formed between the lower end frame installation interface 91 and the upper end frame installation interface 92 for installing an external electric single machine, and the mounting plane is located outside the carbon fiber skin component 6.

[0073] In a preferred embodiment, Figure 4 As shown, two lower end frame mounting interfaces 91 are integrally provided on the lower end frame 3. In the projection from a top view, the lower end frame mounting interface 91 can be on the outside of the skin gluing groove 32 or on the inside of the skin gluing groove 32. A corresponding notch is provided on the outer skin 62. Two upper end frame mounting interfaces 92 are glued and installed on the outer side of the upper end frame 4. The two lower end frame mounting interfaces 91 and the two upper end frame mounting interfaces 92 form an installation plane for installing the electric unit, and the installation plane needs to be located outside the outer skin 62.

[0074] In the description of the present application, it should be understood that the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0075] The above describes the specific embodiments of the present invention. It should be understood that the present invention is not limited to the above specific embodiments, and those skilled in the art can make various changes or modifications within the scope of the claims, which does not affect the essence of the present invention. In the absence of conflict, the embodiments of the present application and the features in the embodiments can be combined with each other arbitrarily.

Claims

1. A high-stability composite base frame for a control moment gyroscope, characterized in that: It comprises an axial hole buried block (2), an upper end frame (4), a lower end frame (3), an internal support module (5), a carbon fiber skin component (6) and a carbon fiber cap (7); There are two shaft hole embedded blocks (2), which are respectively installed on both sides of the lower end frame (3), and the two shaft hole embedded blocks (2) are symmetrically arranged on both sides of the rotor rotation center point along the long axis direction of the control moment gyroscope, and the two ends of the upper end frame (4) are respectively installed on the side parts of the two shaft hole embedded blocks (2); A carbon fiber internal support module (5) is installed between the lower end frame (3) and the upper end frame (4); the lower end frame (3), the upper end frame (4), the internal support module (5) and the shaft hole embedded block (2) together form a base frame structure; the carbon fiber skin component (6) is coated on both inner and outer sides of the base frame structure; and the carbon fiber cap (7) covers the top of the upper end frame (4) and the top of the shaft hole embedded block (2).

2. The high-stability composite base frame of the control moment gyro according to claim 1, characterized in that: An axial hole matching the long axis of the control moment gyro is arranged in the middle of the axial hole buried block (2), and two side surfaces of the axial hole buried block (2) are parallel to each other; The shaft hole embedded block (2) is provided with an upper slot (22) and a lower slot (23), the upper slot (22) is symmetrically arranged at the upper part of the two side surfaces of the shaft hole embedded block (2), the lower slot (23) is evenly distributed on the bottom surface of the shaft hole embedded block (2), and a lightening slot is provided on the top of the shaft hole embedded block (2); The shaft hole buried block (2) is plugged into and installed on the top of the lower end frame (3) through a lower slot (23); the end of the upper end frame (4) is plugged into an upper slot (22) arranged on the side of the shaft hole buried block (2); and both the upper slot (22) and the lower slot (23) are straight slots.

3. The high-stability composite base frame of the control moment gyro according to claim 2, characterized in that: The outer side surface of the shaft hole buried block (2) is provided with a plurality of mounting protruding surfaces (21), the plurality of mounting protruding surfaces (21) are evenly distributed on the outer side of the shaft hole along the circumference of the shaft hole in the shaft hole buried block (2), and the mounting protruding surfaces (21) are used for mounting an external motor; The protruding height of the mounting protruding surface (21) is greater than the thickness of the carbon fiber skin component (6), and the mounting protruding surface (21) passes through a corresponding through hole on the carbon fiber skin component (6), and a mounting threaded hole is provided in the middle of the mounting protruding surface (21); The bottom of the shaft hole embedded block (2) is a lower end frame plug-in portion (25) for plugging into a buried block plug-in groove (33) provided on the side of the lower end frame (3); the thickness of the lower end frame plug-in portion (25) is smaller than the thickness of the remaining portion of the shaft hole embedded block (2); the lower slot (23) is arranged at the bottom of the lower end frame plug-in portion (25); and the mounting protruding table (21) located on the lower end frame plug-in portion (25) is embedded in a protruding table receiving groove (35) provided on the side of the buried block plug-in groove (33).

4. The high-stability composite base frame of the control moment gyro according to claim 1, characterized in that: The top of the lower end frame (3) is provided with a rectangular embedded block insertion groove (33) for inserting with the bottom of the shaft hole embedded block (2); the bottom of the embedded block insertion groove (33) is provided with a first embedded block plug connector (34) for connecting with the lower slot (23) provided at the bottom of the shaft hole embedded block (2); A support module lower plug-in slot (31) is provided along the inner edge of the top of the lower end frame (3), both ends of the support module lower plug-in slot (31) are separated from the embedded block plug-in slots (33) on both sides by partitions, and the bottom of the internal support module (5) is plugged into the support module lower plug-in slot (31); The outer edge of the lower end frame (3) is provided with a flat wing plate, the outer sides of the support module lower plug-in slot (31) and the embedded block plug-in slot (33) are both provided with skin glue grooves (32) for installing the carbon fiber skin assembly (6), and the inner side wall of the support module lower plug-in slot (31) is provided with threaded holes for fixing the carbon fiber skin assembly (6); The outer edge of the lower end frame (3) is provided with fixing feet along the circumferential direction for fixing on the external whole-star mounting surface, and the two sides of the fixing feet are continuously and integrally connected to the plane wing plate.

5. The high-stability composite base frame of the control moment gyro according to claim 1, characterized in that: There are two upper end frames (4), which are centrally symmetrically arranged on both sides of the rotor rotation center point along the short axis direction of the control moment gyro, and second buried block plug connectors (41) are arranged at both ends of the upper end frame (4), which are respectively plugged into upper slots (22) provided on the sides of the two shaft hole buried blocks (2); The upper end frame (4) is symmetrical with respect to the rotation center point of the rotor in the long axis direction. In the projection from the top view angle, the upper end frame (4) is a minor arc segment structure corresponding to the lower end frame (4). A support module upper plug-in groove (42) is provided along the inner edge of the bottom of the upper end frame (4), and the top of the internal support module (5) is plugged into the support module upper plug-in groove (42).

6. The high-stability composite base frame of the control moment gyro according to claim 1, characterized in that: The internal support module (5) comprises a carbon fiber rectangular support tube and a cross-shaped grid, and the top and bottom ends of the carbon fiber rectangular support tube and the cross-shaped grid are respectively plugged into the support module upper plug-in groove (42) at the bottom of the upper end frame (4) and the support module lower plug-in groove (31) at the top of the lower end frame (3); The bottom end of the carbon fiber rectangular support tube is glued to the lower plug-in groove (31) of the support module, the top end of the carbon fiber rectangular support tube is glued to the upper plug-in groove (42) of the support module, and the middle part of the carbon fiber rectangular support tube is glued to the carbon fiber skin assembly; The cross-shaped grid is a square cross-shaped carbon fiber shell, which is glued between the upper plug-in slot (42) of the support module, the lower plug-in slot (31) of the support module, the side of the shaft hole buried block (2) and the side of the carbon fiber rectangular support tube.

7. The high-stability composite base frame of the control moment gyro according to claim 1, characterized in that: The carbon fiber skin assembly (6) comprises an inner skin (61) and an outer skin (62) of equal thickness; The inner skin (61) is an integral continuous structure and is adhered to the inner side of the base frame structure by gluing. The outer skin (62) is a left-right split type and includes a symmetrical first outer skin, a second outer skin and a transition overlap area. The first outer skin and the second outer skin are adhered to the outer side of the base frame structure by gluing. The middle part of the upper end frame (4) and the lower end frame (3) is the maximum radius of the envelope protrusion of the base frame structure, and the transition overlap area is arranged at the maximum radius of the envelope protrusion. The first outer skin and the second outer skin are both connected to the upper end frame (4) and the lower end frame (3) through the transition overlap area by means of rubber screw reinforcement.

8. The high-stability composite base frame of the control moment gyro according to claim 1, characterized in that: The carbon fiber cap (7) comprises an axial hole buried block carbon fiber cap (72) and an upper end frame carbon fiber cap (71); The axial hole buried block carbon fiber cap (72) comprises an arc segment and a plane segment connected to both sides of the arc segment, and the bottom of the axial hole buried block carbon fiber cap (72) is provided with an buried block top slot matching the top configuration of the axial hole buried block (2), and the top of the axial hole buried block (2) is inserted into the buried block top slot; The bottom of the upper end frame carbon fiber cap (71) is provided with an upper end frame top slot matching the arc segment configuration of the upper end frame (4), and the top of the upper end frame (4) is inserted into the upper end frame top slot.

9. The high-stability composite base frame of the control moment gyro according to claim 8, characterized in that: Base frame hanging points (8) are symmetrically arranged on both sides of the top of the shaft hole buried block (2), and the base frame hanging points (8) are threaded holes; The top of the shaft hole buried block (2) is glued to the shaft hole buried block carbon fiber cap (72) via an adhesive patch, and both the shaft hole buried block carbon fiber cap (72) and the adhesive patch are provided with through holes corresponding to the threaded holes.

10. The high-stability composite base frame of the control moment gyro according to claim 1, characterized in that: The base frame is provided with a single-machine installation interface (9), and the single-machine installation interface (9) comprises a lower end frame installation interface (91) and an upper end frame installation interface (92); The lower end frame mounting interface (91) is of boss type and is integrally mounted on the top of the lower end frame (3); the upper end frame mounting interface (92) is mounted on a boss provided on the outer side of the upper end frame (4); a mounting plane is formed between the lower end frame mounting interface (91) and the upper end frame mounting interface (92) for mounting an external electric unit; the mounting plane is located outside the carbon fiber skin assembly (6).

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