Light mounting seat for reflecting mirror

Abstract

The utility model discloses a light mounting seat for a reflecting mirror, which belongs to the technical field of silicon carbide and comprises a primary mirror back plate and a primary mirror mounting plate which are made of silicon carbide materials, the primary mirror back plate is hermetically connected with the primary mirror mounting plate, and a plurality of uniformly distributed support components are fixedly connected between the primary mirror back plate and the primary mirror mounting plate. The primary mirror mounting plate is a spherical arc plate, a mounting hole for mounting a primary mirror is formed in the center of the spherical arc plate, the mounting hole penetrates through the primary mirror back plate, and the center point of the mounting hole coincides with the center point of the primary mirror back plate.

Description

Technical Field

[0001] The utility model relates to a field, in particular to a lightweight mounting seat for a reflector. Background Art

[0002] The reflector is a key component of the reflective optical system, and the reflector support technology is one of the most critical technologies in the engineering application of large-aperture reflectors. As the diameter of the reflector increases, its mounting base must be designed to be lightweight to avoid the overall overweight of the reflector. After the mounting base is lightweight, as the lightweight rate increases, although the specific stiffness is increasing, the absolute stiffness of the structure is decreasing, so the sensitivity of the mirror to the support stress is also increasing rapidly. At the same time, changes in the space environment temperature can easily cause changes in the surface shape of the reflector through the support structure. After entering the space orbit, the primary mirror that has met the engineering use requirements on the ground will deform due to the disappearance of its own weight and the large temperature difference between different components of the mounting base, which directly affects the imaging effect of the space camera. Utility Model Content

[0003] In order to solve the problems existing in the prior art, the utility model provides a lightweight mounting seat for a reflector, which is made of silicon carbide. It can reduce the overall weight while ensuring the strength between the main mirror back plate and the main mirror mounting plate. It adopts a main triangular support plate and an auxiliary triangular support plate with reinforcing ribs and a triangular design. It can further reduce the overall weight while ensuring the structural strength of the main mirror back plate and the main mirror mounting plate, which is conducive to achieving a lightweight design. At the same time, the outer ring body that passes through the main mirror back plate is designed to fit the main mirror mounting plate to achieve a sealed connection between the main mirror back plate and the main mirror mounting plate, which can promote the consistency of temperature between the main mirror back plate and the main mirror mounting plate, and avoid deformation between the main mirror back plate and the main mirror mounting plate due to temperature difference.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0005] A lightweight mounting seat for a reflector, comprising a main mirror back plate and a main mirror mounting plate made of silicon carbide, wherein the main mirror back plate and the main mirror mounting plate are arranged to be sealed and connected, and a plurality of evenly distributed support components are arranged between the main mirror back plate and the main mirror mounting plate for fixed connection, and the main mirror mounting plate is arranged to be a spherical arc plate, and a mounting hole for mounting the main mirror is arranged at the center of the spherical arc plate, and the mounting hole passes through the main mirror back plate, and the center point of the mounting hole coincides with the center point of the main mirror back plate.

[0006] Preferably, the main mirror back plate includes a plane plate, and a side of the plane plate away from the main mirror mounting plate is provided with a concentrically arranged outer ring body and an inner ring body, the ends of the outer ring body and the inner ring body away from the plane plate are flush with each other, the mounting hole is located at the center of the inner ring body, the mounting hole passes through the plane plate, and a number of evenly cross-distributed reinforcing ribs are provided between the outer ring body and the inner ring body.

[0007] Preferably, the outer side surface of the outer ring body is set to a cylindrical surface, and the outer side surface of the outer ring body is composed of 12 evenly distributed vertical surfaces. One end of the outer ring body extends through the plane plate and fits with the spherical arc plate. The support assembly is distributed on both sides of the outer ring body between the main mirror back plate and the main mirror mounting plate.

[0008] Preferably, three evenly distributed mounting bosses are provided on the outer side of the outer ring body, one vertical spacer is provided between adjacent mounting bosses, one side of the mounting boss is fixedly mounted on the plane plate, and the other side of the mounting boss is flush with the outer ring body.

[0009] Preferably, the mounting boss includes two side walls, an arc-shaped plate is provided between the two side walls for connection, and the two side walls are symmetrically distributed on both sides of the arc-shaped plate.

[0010] Preferably, the support assembly comprises a plurality of support plate groups evenly distributed along the radial direction of the outer ring body, and one side of the support plate group is installed at the intersection of two adjacent vertical surfaces on the inner and outer sides of the outer ring body.

[0011] Preferably, the support plate group includes main triangular support plates located on both sides of the outer ring body, and auxiliary triangular support plates are symmetrically provided on both sides of the main triangular support plates.

[0012] Preferably, a triangular through hole is provided at the center of the main triangular support plate and the auxiliary triangular support plate.

[0013] The beneficial effects of the utility model are as follows:

[0014] 1. The utility model adopts an outer ring body penetrating the main mirror mounting plate and the main mirror back plate to realize the sealing connection between the main mirror back plate and the main mirror mounting plate. The outer ring body can be used to isolate the outside world, ensure the temperature consistency between the main mirror back plate and the main mirror mounting plate, avoid deformation between the main mirror back plate and the main mirror mounting plate due to temperature difference, and enhance the connection strength between the main mirror mounting plate and the main mirror back plate.

[0015] 2. The utility model adopts auxiliary triangular support plates and main triangular support plates to support and connect the main mirror mounting plate and the main mirror back plate. The triangular design can effectively enhance the structural strength of the spherical arc plate and the outer ring body by utilizing the stability of the triangle, effectively reduce the possibility of deformation of the spherical arc plate and the outer ring body due to temperature difference, and reduce the amount of support material used, which is conducive to reducing the weight of the support assembly. At the same time, the triangular through-hole design at the center of the main triangular support plate and the auxiliary triangular support plate can further reduce the weight of the support assembly;

[0016] 3. In the present invention, the reinforcing ribs arranged crosswise between the inner ring body and the outer ring body cooperate with the reinforcing ribs in the mounting boss to effectively enhance the overall structural strength of the main mirror back plate;

[0017] 4. In the utility model, the inner side of the outer ring body adopts a cylindrical surface design, which can effectively avoid a more uniform stress distribution inside the outer ring body. The outer side adopts a 12 evenly distributed vertical surface design. The increase in the thickness of the junction between adjacent vertical surfaces can effectively enhance the structural strength of the outer ring body. At the same time, the increase in the thickness of the junction between adjacent vertical surfaces also facilitates the processing of the main triangular support plate and the auxiliary support plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the overall structure of a lightweight mounting base for a reflector according to the utility model;

[0019] Figure 2 This is a top view of a lightweight mounting base for a reflector according to the utility model;

[0020] Figure 3 for Figure 2 Cross-sectional view along the AA direction.

[0021] In the figure: 1-main mirror mounting plate, 2-mounting hole, 3-plane plate, 4-outer ring body, 5-inner ring body, 6-reinforcement ribs, 7-side wall, 8-arc plate, 9-main triangular support plate, 10-auxiliary triangular support plate, 11-triangular through hole. DETAILED DESCRIPTION

[0022] In order to facilitate understanding by those skilled in the art, the present invention is further described below in conjunction with the accompanying drawings.

[0023] like Figure 1-3A lightweight mounting seat for a reflector shown in the figure comprises a main mirror back plate and a main mirror mounting plate 1 integrally formed of silicon carbide material, the main mirror back plate and the main mirror mounting plate 1 are arranged to be sealed and connected, a plurality of evenly distributed support components are arranged between the main mirror back plate and the main mirror mounting plate 1 to be fixedly connected, the main mirror mounting plate 1 is arranged to be a spherical arc plate, a mounting hole 2 for main mirror mounting is arranged at the center position of the spherical arc plate, the mounting hole 2 passes through the main mirror back plate, the center point of the mounting hole 2 coincides with the center point of the main mirror back plate, a sealed connection is adopted between the main mirror back plate and the main mirror mounting plate 1, which is beneficial to reduce the influence of the external environment on the position of the mounting hole 2 between the main mirror mounting plate 1 and the main mirror back plate, and is beneficial to maintain the temperature consistency between the main mirror back plate and the main mirror mounting plate 1, and avoid deformation between the main mirror back plate and the main mirror mounting plate 1 due to temperature difference.

[0024] The main mirror back plate includes a plane plate 3, and a concentrically arranged outer ring body 4 and an inner ring body 5 are provided on one side of the plane plate 3 away from the main mirror mounting plate 1. The ends of the outer ring body 4 and the inner ring body 5 away from the plane plate 3 are flush with each other, and the mounting hole 2 is located at the center of the inner ring body 5. The mounting hole 2 passes through the plane plate 3, and a number of uniformly cross-distributed reinforcing ribs 6 are provided between the outer ring body 4 and the inner ring body 5. The design of the reinforcing ribs 6 between the outer ring body 4 and the inner ring body 5 can not only enhance the structural strength between the outer ring body 4 and the inner ring body 5, but also reduce the overall weight.

[0025] The inner side surface of the outer ring body 4 is set as a cylindrical surface, and the outer side surface of the outer ring body 4 is composed of 12 evenly distributed vertical surfaces. One end of the outer ring body 4 extends through the plane plate 3 and fits with the spherical arc plate to realize a sealed connection between the main mirror back plate and the main mirror mounting plate 1. The support components are distributed on the inner and outer sides of the outer ring body 4 between the main mirror back plate and the main mirror mounting plate 1. The inner side of the outer ring body 4 adopts a cylindrical surface design, which can effectively avoid a more uniform stress distribution inside the outer ring body 4. The outer side adopts a 12 evenly distributed vertical surface design. The increase in the thickness of the junction position between adjacent vertical surfaces can effectively enhance the structural strength of the outer ring body 4. At the same time, the increase in the thickness of the junction position between adjacent vertical surfaces also facilitates the processing of the main triangle support plate 9 and the auxiliary support plate.

[0026] Three evenly distributed mounting bosses are provided on the outside of the outer ring body 4, and one vertical spacer is provided between adjacent mounting bosses. One side of the mounting boss is fixedly mounted on the flat plate 3, and the other side of the mounting boss is flush with the outer ring body 4; the mounting boss includes two side walls 7, and an arc-shaped plate 8 is provided between the two side walls 7 for connection. The two side walls 7 are symmetrically distributed on both sides of the arc-shaped plate 8. Reinforcing ribs 6 are also provided between the outer ring body 4 and the side walls 7 and the arc-shaped plate 8 for connection. The design of the reinforcing ribs 6 can reduce the weight while ensuring the overall strength of the mounting boss.

[0027] The support assembly includes a plurality of support plate groups evenly distributed along the radial direction of the outer ring body 4, and one side of the support plate group is installed at the intersection of two adjacent vertical surfaces on the inner and outer sides of the outer ring body 4; the support plate group includes a main triangular support plate 9 located on the inner and outer sides of the outer ring body 4, and auxiliary triangular support plates 10 are symmetrically arranged on both sides of the main triangular support plate 9. The auxiliary triangular support plate 10 and the main triangular support plate 9 adopt a triangular design, which can not only utilize the stability of the triangle to effectively enhance the structural strength of the spherical arc plate and the outer ring body 4, but also effectively reduce the possibility of deformation of the spherical arc plate and the outer ring body 4 due to temperature difference, and can also reduce the use of support materials, which is beneficial to reduce the weight of the support assembly.

[0028] The maximum distance between the center of the mounting hole 2 and the main mirror back plate in the same plane is smaller than the distance between the mounting hole 2 and the outer side wall 7 of the spherical arc plate in the same plane. One side edge of the main triangular support plate 9 and the auxiliary triangular support plate 10 on the outer side of the outer ring body 4 are both attached to the outer ring body 4, and the other side edge of the main triangular support plate 9 and the auxiliary triangular support plate 10 are attached to the spherical arc plate from the outer side wall 7 of the outer ring body 4 to the outer side wall 7 of the spherical arc plate; one side edge of the main triangular support plate 9 and the auxiliary triangular support plate 10 on the inner side of the outer ring body 4 are both attached to the outer ring body 4, and the other side edge of the main triangular support plate 9 and the auxiliary triangular support plate 10 are attached to the spherical arc plate from the inner side wall 7 of the outer ring body 4 to the mounting hole 2.

[0029] The main triangular support plate 9 and the auxiliary triangular support plate 10 are both provided with a triangular through hole 11 at the center thereof. The design of the triangular through hole 11 at the center thereof can further reduce the weight of the support assembly.

[0030] The above contents are merely examples and explanations of the structure of the utility model. The technicians in this technical field may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the structure of the utility model or exceed the scope defined in the claims, they should all fall within the protection scope of the utility model.

Claims

1. A lightweight mounting base for a reflector, characterized in that: Including silicon carbide A main mirror back plate and a main mirror mounting plate of a material, wherein the main mirror back plate and the main mirror mounting plate are arranged to be sealed and connected, and a plurality of evenly distributed support components are arranged between the main mirror back plate and the main mirror mounting plate to be fixedly connected, the main mirror mounting plate is arranged to be a spherical arc plate, and a mounting hole for mounting the main mirror is arranged at the center of the spherical arc plate, and the mounting hole passes through the main mirror back plate, and the center point of the mounting hole coincides with the center point of the main mirror back plate.

2. A lightweight mounting base for a reflector according to claim 1, characterized in that: The main mirror back plate includes a plane plate, and a concentrically arranged outer ring body and an inner ring body are provided on a side of the plane plate away from the main mirror mounting plate. The ends of the outer ring body and the inner ring body away from the plane plate are flush with each other, the mounting hole is located at the center of the inner ring body, the mounting hole passes through the plane plate, and a number of evenly cross-distributed reinforcing ribs are provided between the outer ring body and the inner ring body.

3. A lightweight mounting base for a reflector according to claim 2, characterized in that: The inner side surface of the outer ring body is set as a cylindrical surface, and the outer side surface of the outer ring body is composed of 12 evenly distributed vertical surfaces. One end of the outer ring body extends through the plane plate and fits with the spherical arc plate. The support components are correspondingly distributed on both sides of the outer and inner sides of the outer ring body between the main mirror back plate and the main mirror mounting plate.

4. A lightweight mounting base for a reflector according to claim 3, characterized in that: The outer side of the outer ring body is provided with three evenly distributed mounting bosses, and one vertical surface interval is provided between adjacent mounting bosses. One side of the mounting boss is fixedly mounted on the plane plate, and the other side of the mounting boss is flush with the outer ring body.

5. A lightweight mounting base for a reflector according to claim 4, characterized in that: The mounting boss comprises two side walls, an arc-shaped plate is arranged between the two side walls for connection, and the two side walls are symmetrically distributed on both sides of the arc-shaped plate.

6. The lightweight mounting base for a reflector according to claim 3, characterized in that: The support assembly includes a plurality of support plate groups evenly distributed along the radial direction of the outer ring body, and one side of the support plate group is installed at the intersection of two adjacent vertical surfaces on the inner and outer sides of the outer ring body.

7. A lightweight mounting base for a reflector according to claim 6, characterized in that: The support plate group includes main triangular support plates located on both sides of the outer ring body, and auxiliary triangular support plates are symmetrically arranged on both sides of the main triangular support plate.

8. The lightweight mounting base for a reflector according to claim 7, characterized in that: The main triangular support plate and the auxiliary triangular support plate are both provided with triangular through holes at their centers.

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