阅读说明：本技术 动量轮减振安装组件及航天器 (Momentum wheel damping installation component and spacecraft ) 是由 高恩宇 姜秀鹏 胡宝义 阎凯 于 2021-11-10 设计创作，主要内容包括：本发明涉及航天器技术领域,尤其是涉及一种动量轮减振安装组件及航天器。所述动量轮减振安装组件,包括：支撑件、减振器和散热组件；所述散热组件包括上散热件、传热件和下散热件,所述传热件连接在所述上散热件和所述下散热件之间,以使所述上散热件和所述下散热件之间具有间隔,所述上散热件用于与动量轮抵接以与所述动量轮换热,所述下散热件与所述支撑件连接以与所述支撑件换热；所述减振器用于连接在所述支撑件和所述动量轮之间,且所述散热组件上设有用于所述减振器与所述动量轮连接的通孔。本发明提供的动量轮减振安装组件可以在隔振的同时实现对动量轮的散热。(The invention relates to the technical field of spacecrafts, in particular to a momentum wheel vibration reduction mounting assembly and a spacecraft. The momentum wheel vibration damping mounting assembly comprising: a support, a damper and a heat sink assembly; the heat dissipation assembly comprises an upper heat dissipation member, a heat transfer member and a lower heat dissipation member, the heat transfer member is connected between the upper heat dissipation member and the lower heat dissipation member so that an interval is formed between the upper heat dissipation member and the lower heat dissipation member, the upper heat dissipation member is used for being abutted against the momentum wheel to exchange heat with the momentum wheel, and the lower heat dissipation member is connected with the support member to exchange heat with the support member; the shock absorber is used for being connected between the supporting piece and the momentum wheel, and the heat dissipation assembly is provided with a through hole used for connecting the shock absorber and the momentum wheel. The momentum wheel vibration reduction mounting assembly provided by the invention can realize vibration isolation and heat dissipation of the momentum wheel.)

1. A momentum wheel damper mounting assembly, comprising: a support, a damper and a heat sink assembly; the heat dissipation assembly comprises an upper heat dissipation member, a heat transfer member and a lower heat dissipation member, the heat transfer member is connected between the upper heat dissipation member and the lower heat dissipation member so that an interval is formed between the upper heat dissipation member and the lower heat dissipation member, the upper heat dissipation member is used for being abutted against the momentum wheel to exchange heat with the momentum wheel, and the lower heat dissipation member is connected with the support member to exchange heat with the support member; the shock absorber is used for being connected between the supporting piece and the momentum wheel, and the heat dissipation assembly is provided with a through hole used for connecting the shock absorber and the momentum wheel.

2. The momentum wheel damper mounting assembly of claim 1 wherein the upper heat sink is an upper heat sink, the heat transfer element is a spring, and the lower heat sink is a lower heat sink; in the two opposite sides of the elastic sheet, one side of the elastic sheet is connected with one end of the upper radiating fin, and the other side of the elastic sheet is connected with the same end of the lower radiating fin.

3. The momentum wheel damping mount assembly according to claim 2, wherein the spring plate is arranged in an arc shape, and the one side of the spring plate is arranged in a tangential manner with respect to one end of the upper heat sink, and the other side of the spring plate is arranged in a tangential manner with respect to the same end of the lower heat sink.

4. The momentum wheel damper mounting assembly of claim 3 wherein the upper heat sink, the spring plate and the lower heat sink are integrally formed.

5. The momentum wheel damper mounting assembly of claim 2 wherein the lower fins have a length less than the length of the upper fins, the upper fins having through holes for the connection of the damper to the momentum wheel.

6. The momentum wheel damper mounting assembly of claim 5 wherein tooling mounting holes are provided in both the upper heat sink and the support; and the support piece is provided with a connecting hole for mounting the shock absorber.

7. The momentum wheel damper mounting assembly according to any of claims 1 to 6 wherein the support comprises a bracket, the bracket comprising a base plate, a mounting plate and a gusset plate, of two adjacent sides of the gusset plate, one side of the gusset plate being connected to the mounting plate and the other side of the gusset plate being connected to the base plate; the lower radiating piece and the shock absorber are connected with the mounting plate.

8. The momentum wheel damper mounting assembly of claim 7 wherein the number of said gusset plates is two, the two gusset plates being disposed opposite one another; and/or a lightening groove and a wiring harness mounting hole are formed in the triangular support plate.

9. The momentum wheel damper mounting assembly of claim 7 wherein the base plate and the mounting plate are both rectangular.

10. A spacecraft comprising a momentum wheel, a momentum wheel mount and a momentum wheel damper mount assembly according to any of claims 1 to 9, the support being connected to the momentum wheel mount, the momentum wheel abutting the upper heat sink, the momentum wheel being connected to the damper.

Technical Field

The invention relates to the technical field of spacecrafts, in particular to a momentum wheel vibration reduction mounting assembly and a spacecraft.

Background

The momentum wheel is an important element for controlling the on-orbit attitude of the spacecraft, and the failure of the momentum wheel can cause the whole spacecraft to lose the attitude control capability and even fail to work normally. Due to the structural particularity of the momentum wheel, the sensitivity of the momentum wheel to vibration is high; in addition, the momentum wheel consumes much power when running at high speed, and generates heat. Therefore, there is a need for an apparatus for mounting a momentum wheel that can achieve both vibration isolation and heat dissipation.

Disclosure of Invention

The invention aims to provide a momentum wheel vibration reduction mounting assembly and a spacecraft, so as to realize vibration isolation and heat dissipation to a certain extent.

The invention provides a momentum wheel vibration damping mounting assembly, comprising: a support, a damper and a heat sink assembly; the heat dissipation assembly comprises an upper heat dissipation member, a heat transfer member and a lower heat dissipation member, the heat transfer member is connected between the upper heat dissipation member and the lower heat dissipation member so that an interval is formed between the upper heat dissipation member and the lower heat dissipation member, the upper heat dissipation member is used for being abutted against the momentum wheel to exchange heat with the momentum wheel, and the lower heat dissipation member is connected with the support member to exchange heat with the support member; the shock absorber is used for being connected between the supporting piece and the momentum wheel, and the heat dissipation assembly is provided with a through hole used for connecting the shock absorber and the momentum wheel.

In the process of installing the momentum wheel, the momentum wheel passes through the shock absorber and the hole on the heat dissipation assembly through the fastener, and then is connected and fixed with the momentum wheel; in the motion process of the momentum wheel, the vibration absorber can absorb the vibration generated by the momentum wheel, so that the vibration isolation effect is achieved; meanwhile, heat generated by the momentum wheel is transferred to the upper heat dissipation part, the upper heat dissipation part and the lower heat dissipation part are arranged at intervals and are connected with the heat transfer part, on one hand, the upper heat dissipation part can dissipate heat to the outside, on the other hand, the heat dissipation part can transfer heat to the heat transfer part, the heat transfer part transfers heat to the lower heat dissipation part, on the one hand, the lower heat dissipation part can dissipate heat to the support part, and the upper heat dissipation part, the heat transfer part and the lower heat dissipation part form a heat path, so that the heat dissipation of the momentum wheel can be rapidly realized by the heat dissipation part; in addition, at the in-process of connecting shock absorber and momentum wheel, it is fixed with the momentum wheel to dispel the heat piece, on the one hand, can ensure the butt of last heat piece and momentum wheel, ensures the heat transfer between momentum wheel and the last heat piece, and on the other hand conveniently assembles, saves installation time.

Furthermore, the upper radiating piece is an upper radiating fin, the heat transfer piece is an elastic piece, and the lower radiating piece is a lower radiating fin; in the two opposite sides of the elastic sheet, one side of the elastic sheet is connected with one end of the upper radiating fin, and the other side of the elastic sheet is connected with the same end of the lower radiating fin.

Furthermore, the elastic sheet is arranged in an arc shape, one side of the elastic sheet is tangent to one end of the upper radiating fin, and the other side of the elastic sheet is tangent to the same end of the lower radiating fin.

Furthermore, the upper radiating fin, the elastic sheet and the lower radiating fin are integrally formed.

Furthermore, the length of the lower radiating fin is smaller than that of the upper radiating fin, and the upper radiating fin is provided with a through hole for connecting the vibration absorber and the momentum wheel.

Further, the upper radiating fins and the supporting pieces are provided with tool mounting holes; and the support piece is provided with a connecting hole for mounting the shock absorber.

Further, the supporting part comprises a support, the support comprises a bottom plate, a mounting plate and a triangular support plate, one side edge of the triangular support plate is connected with the mounting plate, and the other side edge of the triangular support plate is connected with the bottom plate; the lower radiating piece and the shock absorber are connected with the mounting plate.

Furthermore, the number of the triangular support plates is two, and the two triangular support plates are arranged oppositely; and/or a lightening groove and a wiring harness mounting hole are formed in the triangular support plate.

Further, the bottom plate and the mounting plate are both rectangular.

The invention provides a spacecraft which comprises a momentum wheel, a momentum wheel mounting part and the momentum wheel vibration damping mounting component, wherein a supporting piece is connected with the momentum wheel mounting part, the momentum wheel is abutted against an upper heat radiating piece, and the momentum wheel is connected with a vibration damper.

It is to be understood that both the foregoing general description and the following detailed description are for purposes of illustration and description and are not necessarily restrictive of the disclosure. The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate the subject matter of the disclosure. Together, the description and drawings serve to explain the principles of the disclosure.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is a schematic structural view of a momentum wheel damper mounting assembly according to an embodiment of the invention;

FIG. 2 is a schematic structural view of a momentum wheel damper mounting assembly according to another embodiment of the present invention;

FIG. 3 is a cut-away view of the momentum wheel damper mounting assembly shown in FIG. 2;

FIG. 4 is a schematic structural view of a heat sink assembly of the momentum wheel damping mount assembly shown in FIG. 2;

FIG. 5 is a schematic view of a bracket of the momentum wheel damping mount assembly of FIG. 2;

FIG. 6 is a schematic view of the structure of a damper in the momentum wheel damper mounting assembly of FIG. 2;

FIG. 7 is a schematic structural diagram of a momentum wheel and a momentum wheel damper mounting assembly in a spacecraft of an embodiment of the present invention;

fig. 8 is a schematic structural view of a momentum wheel and a momentum wheel damper mounting assembly in a spacecraft according to another embodiment of the invention.

Icon: 10-a support; 20-a shock absorber; 30-a heat dissipation assembly; a 40-momentum wheel; 50-a fastener; 60-screws; 70-tool mounting holes; 80-assembling; 31-upper fins; 32-spring plate; 33-lower fins; 34-a through hole; 11-a base plate; 12-a mounting plate; 13-a triangular support plate; 14-connecting holes; 131-weight reduction grooves; 132-harness mounting holes.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention.

The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention.

All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1 to 8, the present invention provides a momentum wheel damper mounting assembly comprising: support 10, damper 20 and heat sink assembly 30; the heat dissipation assembly 30 includes an upper heat dissipation member, a heat transfer member, and a lower heat dissipation member, the heat transfer member is connected between the upper heat dissipation member and the lower heat dissipation member to have an interval therebetween, the upper heat dissipation member is used to abut against the momentum wheel 40 to exchange heat with the momentum wheel 40, and the lower heat dissipation member is connected to the support member 10 to exchange heat with the support member 10; the damper 20 is for coupling between the support 10 and the momentum wheel 40, and the heat dissipation assembly 30 is provided with a through hole 34 for coupling the damper 20 with the momentum wheel 40.

In this embodiment, during the installation of the momentum wheel 40, the fastening element 50 passes through the damper 20, through the hole of the heat dissipation assembly 30, and then is connected and fixed with the momentum wheel 40; during the movement of the momentum wheel 40, the vibration absorber 20 can absorb the vibration generated by the momentum wheel 40, thereby playing a role of vibration isolation; meanwhile, heat generated by the momentum wheel 40 is transferred to the upper heat dissipation member, the upper heat dissipation member and the lower heat dissipation member are arranged at intervals and are connected with heat transfer members, on one hand, the upper heat dissipation member can dissipate heat to the outside, on the other hand, the heat dissipation member can transfer heat to the heat transfer member, the heat transfer member transfers heat to the lower heat dissipation member, on the one hand, the lower heat dissipation member can dissipate heat to the support member 10, and on the other hand, the upper heat dissipation member, the heat transfer member and the lower heat dissipation member form a heat path, so that the heat dissipation member can quickly dissipate heat of the momentum wheel 40; in addition, at the in-process of connecting shock absorber 20 and momentum wheel 40, it is fixed with momentum wheel 40 to dispel the heat piece, on the one hand, can ensure the butt of dispelling the heat piece and momentum wheel 40, ensures the heat transfer between momentum wheel 40 and the last heat piece, and on the other hand conveniently assembles, saves installation time.

Wherein, the damper 20 can be a spring damper; alternatively, the damper 20 is a metal rubber damper, and the rigidity and damping of the metal rubber damper may be determined according to the size of the momentum wheel 40.

It should be noted that the heat transfer member is preferably resilient so as to accommodate expansion and contraction of shock absorber 20.

The structural form of the heat dissipation assembly 30 may be various, for example: the upper radiating piece and the lower radiating piece are both plate-shaped bodies, sheet-shaped bodies or block-shaped bodies and the like, the heat transfer piece is a spring, and the upper radiating piece, the lower radiating piece and the spring can be made of the same material; the upper heat sink may transfer heat to the spring, which in turn transfers heat to the lower heat sink.

As an alternative, as shown in fig. 1 and 2, the upper heat dissipation member is an upper heat dissipation fin 31, the heat transfer member is an elastic sheet 32, and the lower heat dissipation member is a lower heat dissipation fin 33; of the two opposite sides of the elastic sheet 32, one side of the elastic sheet 32 is connected to one end of the upper heat sink 31, and the other side of the elastic sheet 32 is connected to the same end of the lower heat sink 33.

In this embodiment, the upper heat sink 31, the elastic sheet 32, and the upper heat sink 31 may all be made of metal with good thermal conductivity and certain elasticity, such as: copper. The elastic sheet 32 in this embodiment is equivalent to a spring sheet, so as to be capable of adapting to the expansion and contraction deformation of the shock absorber 20, and the heat dissipation assembly 30 with such a structure has a simple structure and is convenient to process and manufacture.

The structure of the elastic sheet 32 may be various, for example: the spring plate 32 is linear; alternatively, the elastic sheet 32 is a broken line type; alternatively, the spring pieces 32 are wavy, etc.

As an alternative, as shown in fig. 3, the elastic sheet 32 is disposed in a circular arc shape, one side of the elastic sheet 32 is disposed in a tangent manner with one end of the upper heat sink 31, and the other side of the elastic sheet 32 is disposed in a tangent manner with the same end of the lower heat sink 33.

In this embodiment, the upper heat sink 31 and the elastic sheet 32 can be in smooth transition, and the lower heat sink 33 and the elastic sheet 32 can be in smooth transition, so that the stress concentration of the heat dissipation assembly 30 can be avoided, the stress of the heat dissipation assembly 30 is uniform, and the service life is long.

The elastic sheet 32 and the upper heat sink 31 can be fixed by welding, clamping or screwing, or the elastic sheet 32 and the lower heat sink 33 can be fixed by welding, clamping or screwing.

As an alternative, the upper heat sink 31, the elastic pieces 32, and the lower heat sink 33 are integrally formed, for example: the heat dissipation part is formed by bending, the production efficiency is high, and the strength of the heat dissipation component 30 is good.

Optionally, the upper side (the side corresponding to the upper heat sink 31) of the elastic sheet 32 may protrude out of the upper heat sink 31, and the lower side (the side corresponding to the lower heat sink 33) of the elastic sheet 32 is flush with the lower heat sink 33, so that the elastic sheet 32 can be ensured to have good elasticity, and the lower heat sink 33 and the support member 10 can be conveniently assembled.

The length of the upper fin 31 and the length of the lower fin 33 may be set according to specific needs.

Alternatively, as shown in fig. 3, the lower fin 33 has a length smaller than that of the upper fin 31, and the upper fin 31 is provided with a through hole 34 for connecting the damper 20 with the momentum wheel 40.

In this embodiment, the length of the lower heat sink 33 is smaller than the length of the upper heat sink 31, and the through hole 34 for connecting the damper 20 and the momentum wheel 40 is formed in the upper heat sink 31, that is, the length of the lower heat sink 33 is shorter, so as to avoid the arrangement of the damper 20, avoid interference with the installation of the damper 20, or avoid the complicated processing caused by the opening also being processed in the lower heat sink 33, and facilitate the installation of the damper 20.

As shown in fig. 1 to 4, on the basis of the above embodiments, further, both the upper heat sink 31 and the support 10 are provided with the tool mounting holes 70, and the tool mounting holes 70 on the upper heat sink 31 and the tool mounting holes 70 on the support 10 are arranged opposite to each other; the support 10 is provided with a coupling hole 14 for mounting the damper 20.

In the embodiment, in the process of assembling the momentum wheel 40 and the momentum wheel vibration damping mounting assembly, the cylindrical tool 80 is inserted into the tool mounting hole 70 of the support member and the tool mounting hole 70 of the upper heat sink 31, and the tool 80 and the tool mounting hole 70 of the support member and the tool mounting hole 70 of the upper heat sink 31 form a shaft hole with a small gap for matching, so that the mounting precision is ensured, and the mounting and fixing of the heat dissipation assembly 30 and the support member 10 are facilitated; after the upper heat sink 31 is positioned by the fixture 80, the lower heat sink 33 is fixed on the support 10 by the fastener 50 such as the bolt or the screw 60, wherein the fastener 50 can be a large flat pad; after the heat dissipation assembly 30 is installed, the tool 80 is removed, the upper and lower parts of the damper are sleeved on the connecting hole 14 of the support 10, the elastic pad is arranged, and the screw 60 penetrates through the damper 20 from the end of the damper 20 far away from the momentum wheel 40, then penetrates through the through hole 34 on the upper heat dissipation plate 31, and finally is screwed in the momentum wheel 40.

The structural form of the support 10 can be various, for example: the support 10 is provided in a plate shape; alternatively, the support 10 is a plate surface of a momentum wheel mount of a spacecraft (as shown in fig. 1); alternatively, the support member 10 is in a frame structure (as shown in fig. 2) or the like.

Depending on the operating conditions of the momentum wheel 40, different configurations of the support 10 can be chosen, for example: for a three-axis controlled satellite, three orthogonal momentum wheels 40 are the lowest requirement, the fourth, redundant momentum wheel 40 (S-wheel) is typically angled equally from the other three to avoid single point failure, and the S-wheel is angled equally from the X, Y, Z planes of the spacecraft platform (e.g., satellite platform) (e.g., 54.74 degrees for each of the three angles), so the S-wheel is typically tilted.

The three orthogonal momentum wheels 40 may be mounted by using a plate-shaped support 10, or the plate surface of the momentum wheel mounting part of the spacecraft may be directly used as the support 10.

For the S-wheel, the support 10 is a bracket by which the S-wheel is braced.

Specifically, as shown in fig. 2 to 6, the bracket includes a bottom plate 11, a mounting plate 12 and a triangular support plate 13, of two adjacent sides of the triangular support plate 13 (the two sides form an included angle a), one side of the triangular support plate 13 is connected with the mounting plate 12, and the other side of the triangular support plate 13 is connected with the bottom plate 11; both the lower heat sink and the shock absorber 20 are attached to the mounting plate 12.

In this embodiment, the bottom plate 11 is used to be connected and fixed with the momentum wheel mounting part of the spacecraft, the triangular support plate 13 makes an angle between the mounting plate 12 and the bottom plate 11, so that the mounting plate 12 is arranged obliquely relative to the bottom plate 11, and the included angle a of the triangular support plate 13 can be set according to the included angles of the S-wheel and X, Y, Z three planes of the spacecraft platform (for example, 54.74 degrees). The bracket with the structure has simple structure and can avoid overlarge weight.

Specifically, a tool mounting hole 70 may be provided on the mounting plate 12 for mounting the coupling hole 14 of the shock absorber 20.

The number of the triangular support plates 13 may be one, or may be three or four.

As an alternative, the number of the triangular support plates 13 is two, and the two triangular support plates 13 are oppositely arranged, that is, the two triangular support plates 13 are connected between the mounting plate 12 and the bottom plate 11, so that the mounting plate 12 can be stably supported.

On the basis of the above embodiment, further, the triangular support plate 13 is further provided with a lightening slot 131, the shape of the lightening slot 131 may be a quadrangle, a wave shape or a circle, and optionally, the lightening slot 131 is a triangle adapted to the triangle of the triangular support plate 13, so that the widths of three sides of the triangular support plate are the same.

On the basis of the above embodiment, further, the triangular support plate 13 may further be provided with a wiring harness installation hole 132, which facilitates wiring and wiring harness binding.

In addition to the above embodiments, the mounting plate 12 may be provided with lightening holes.

As shown in fig. 3, based on the above embodiment, further, the bottom plate 11 and the mounting plate 12 are both rectangular, and the bottom plate 11 is rectangular, so that sufficient contact with the momentum wheel mounting part of the spacecraft can be ensured, and a larger heat dissipation path is provided; the mounting plate 12 is rectangular, has a simple structure, and ensures better strength under the condition of multiple holes.

As shown in fig. 7 and 8, the invention provides a spacecraft, which includes a momentum wheel 40, a momentum wheel mounting part, and a momentum wheel damping mounting assembly according to any one of the above technical solutions, wherein the support 10 is connected with the momentum wheel mounting part, the momentum wheel 40 abuts against the upper heat sink, and the momentum wheel 40 is connected with the damper 20. The spacecraft that this embodiment provided has this momentum wheel damping installation component's whole beneficial effect, here, need not repeated.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention. In the description provided herein, numerous specific details are set forth. It is understood, however, that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description. Furthermore, those skilled in the art will appreciate that while some embodiments herein include some features included in other embodiments, rather than other features, combinations of features of different embodiments are meant to be within the scope of the invention and form different embodiments.