Reflector primary mirror mounting base plate

Abstract

The utility model relates to a reflector main mirror mounting substrate, including an approximately hexagonal substrate, wherein the first surface of the substrate is used to connect to the device body, a center positioning hole is provided at the center position of the substrate, and a support wall is provided at the edge of the substrate; a first mounting area and a second mounting area are provided on the inner side of the support wall near the edge line, and a support area formed by three groups of staggered supporting ribs is provided on the inner side of the first mounting area and the second mounting area. The utility model improves the structural strength while ensuring the lightweight design of the substrate, improves the structural stability of the substrate, and reduces the maintenance frequency of the reflector device. Multiple positioning points and multiple mounting points are arranged at intervals to achieve multi-point positioning and multi-point reinforcement, accurate installation and positioning, and a firm installation structure. The overall structural stability of the reflector is strong, and the geometric center point of the substrate is unified with the center of gravity, which provides a guarantee for the stable operation of the reflector device.

Description

Technical Field

[0001] The utility model relates to the technical field of optical reflectors, in particular to a reflector main mirror mounting base plate. 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.

[0003] As the diameter of the reflector increases, it must be designed to be lightweight to reduce the impact of deformation due to its own weight. After the primary mirror is lightweighted, as the lightweight rate increases, although the specific stiffness increases, the absolute stiffness of the structure decreases, so the sensitivity of the mirror to 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 requirements on the ground will deform due to the disappearance of its own weight and the large temperature difference on both sides of the back plate, which directly affects the imaging effect of the space camera.

[0004] The working condition of the reflector is closely related to the stability of its structure. In order to keep the reflector in a stable working state, its installation accuracy needs to be guaranteed during product assembly and accessory production. Secondly, the internal accessories of the reflector also need to be reasonably arranged in their installation position and method to keep the reflector as a whole in a balanced state to ensure the imaging effect of the camera. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide a reflector main mirror mounting substrate which is lightweight and capable of improving the stability of the equipment.

[0006] To solve the above technical problems, the technical solution of the utility model is: a reflector main mirror mounting substrate, comprising an approximately hexagonal substrate, comprising a first surface and a second surface, the first surface being used to connect to a device body, a through center positioning hole being provided at the center position of the substrate, a support wall being provided at the edge of the substrate surrounding the edge line of the substrate, the center positioning hole and the support wall both extending outward perpendicular to the second surface; a first mounting area and a second mounting area are spaced apart on the inner side of the support wall, the first mounting area and the second mounting area are respectively adjacent to an edge line of the substrate, a first connecting component is distributed in the first mounting area, a second connecting component is distributed in the second mounting area, a plurality of supporting ribs are provided between the first mounting area and the second mounting area relative to each other, and three groups of supporting ribs are staggered to form a supporting area centered on the center positioning hole.

[0007] As a preferred technical solution, the substrate includes three long sides and three short sides, and transition arcs are provided between adjacent long sides and short sides.

[0008] As a further improvement, a partition parallel to the short side is further provided on the first surface, and the partition, the short side and transition arcs on both sides thereof form the first installation area.

[0009] As a further improvement, a first positioning block is provided on the outer wall of one of the transition arcs in the first installation area.

[0010] As another improvement, a first reinforcing rib plate connecting the partition and the short side is provided in the first installation area.

[0011] As another improvement, an "L"-shaped connecting portion is formed between the bottom of the first installation area and the adjacent short side outer wall.

[0012] As a preferred technical solution, the long side and the adjacent supporting ribs enclose the second installation area.

[0013] As a further improvement, a second reinforcing rib plate perpendicular to the long side is provided in the second installation area.

[0014] As a further improvement, a device interface mounting seat is provided on the bottom surface of the second mounting area.

[0015] As a further improvement, second positioning blocks are provided at both ends of the long side outer wall.

[0016] Due to the adoption of the above technical scheme, the beneficial effects of the utility model are as follows: the utility model adopts silicon carbide material, which has high structural strength and light weight; support walls and support ribs are arranged on the second surface, which improve the structural strength while ensuring the lightweight design of the substrate, and the structural stability of the substrate is improved through the supporting effect of the support walls and support ribs. The substrate is less affected by temperature differences, and even in special environments, the substrate will not crack or deform, thereby extending the life of the equipment and reducing the maintenance frequency of the reflector equipment.

[0017] Since multiple positioning blocks are set on the base plate as positioning points, and multiple installation positions are reinforced and connected, the positioning points and the installation points are set at intervals, multi-point positioning and multi-point reinforcement are achieved, the installation positioning is accurate and the installation structure is firm, which is beneficial to improving the stability of the overall structure of the reflector.

[0018] Multiple positioning points and installation points are set at intervals to make the geometric center point of the substrate consistent with the center of gravity, which is conducive to the reasonable layout of the installation space and the overall force balance of the equipment, thus providing a guarantee for the stable operation of the reflector equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0020] Figure 1 It is a structural schematic diagram of an embodiment of the utility model;

[0021] Figure 2 It is a structural schematic diagram of another viewing angle of an embodiment of the utility model;

[0022] Figure 3 It is a schematic diagram of the structure of the first surface of an embodiment of the utility model;

[0023] Figure 4 It is a schematic diagram of the structure of the second surface of an embodiment of the utility model;

[0024] In the figure: 1-substrate; 101-long side; 102-short side; 103-transition arc; 100-first surface; 200-second surface; 201-support wall; 3-center positioning hole; 400-first installation area; 401-mounting hole; 402-partition; 403-first positioning block; 404-first reinforcing rib plate; 500-second installation area; 501-mounting hole; 502-second positioning block; 503-second reinforcing rib plate; 6-support rib plate. DETAILED DESCRIPTION

[0025] like Figures 1 to 4 As shown, a reflector primary mirror mounting substrate is made of silicon carbide and is integrally formed using 3D printing technology. It includes a substrate 1. The overall shape of the substrate is a centrally symmetrical figure that is approximately hexagonal. The substrate 1 includes three long sides 101 and three short sides 102. Transition arcs 103 are provided between adjacent long sides and short sides. This shape setting ensures that the geometric center point of the substrate coincides with the center of gravity, avoiding eccentricity.

[0026] The substrate 1 has two surfaces, a first surface 100 and a second surface 200. The first surface 100 is used to connect the device body, and the second surface 200 plays a supporting role. A through center positioning hole 3 is provided at the center position of the substrate 1, and a support wall 201 surrounding the edge of the substrate is provided at the edge of the substrate 1. The center positioning hole 3 and the support wall 201 both extend outward perpendicular to the second surface 200. The height of the support wall 201 ensures the installation height of the substrate, and its internal area adopts a hollow grid-like lightweight design, which is conducive to weight reduction and saving raw materials.

[0027] The first installation area 400 and the second installation area 500 are arranged at intervals on the inner side of the support wall, that is, there are three first installation areas 400 and three second installation areas 500. For the convenience of installation, the first installation area 400 and the second installation area 500 are respectively adjacent to an edge line of the substrate 1. A plurality of support ribs 6 are arranged between the first installation area and the second installation area. The three groups of support ribs 6 are staggered to form a support area centered on the central positioning hole. In this embodiment, it is preferred to use three support ribs as a group, and each group of support ribs located in the middle passes through the central positioning hole 3. The inclination angle between the three groups of support ribs is 120°. Figure 4 As shown in , three groups of support ribs cross to form a mesh support structure in the support area. By setting the spacing between two support ribs and the angles of several groups of support ribs, different mesh support structures are formed in the support area. Preferably, in this embodiment, in order to avoid eccentricity, the thickness, length and spacing of the three groups of support ribs are the same.

[0028] In order to ensure the stability of the structure, a first connecting component is distributed in the first installation area 400, and a second connecting component is distributed in the second installation area 500. In the present embodiment, the first connecting component is a plurality of groups of mounting holes 401 connected to the main body of the reflector device. In order to facilitate the installation operation, an "L"-shaped connecting portion is formed between the bottom of the first installation area and the outer wall of the adjacent short side 102, and the mounting holes 401 are arranged on the "L"-shaped connecting portion, wherein one group of mounting holes 501 is located at the bottom of the first installation area 400, and the other group of mounting holes 401 is located on the supporting wall of the short side 102.

[0029] A device interface mounting seat is provided on the bottom surface of the second mounting area 500 , and the second connecting component is a plurality of mounting holes 501 connected to the device interface mounting seat.

[0030] like Figure 4 As shown, the second surface is also provided with a partition 402 parallel to the short side 102, and the first installation area 400 is formed by the partition 402, the short side 102 and the transition arcs 103 on both sides thereof. The second installation area 500 is formed by the long side 101 and several sections of the support ribs 6 close thereto.

[0031] In order to ensure the installation positioning accuracy of the equipment, a first positioning block 403 is provided on the outer wall of one of the transition arcs 103 in the first installation area 400 , and second positioning blocks 502 are provided at both ends of the outer wall of the long side 101 of the second installation area 500 .

[0032] The first positioning block 403 is used for positioning the points to determine the installation direction and the installation position, and the second positioning block 502 is used for auxiliary positioning to enhance the stability of the connection relationship.

[0033] In order to improve the supporting function and structural strength of the substrate, a first reinforcing rib plate 404 connecting the partition plate 402 and the short side 102 is provided in the first installation area 400. A second reinforcing rib plate 503 perpendicular to the long side 101 is provided in the second installation area 500.

[0034] In this embodiment, the circumscribed circle of the substrate 1 ( Figure 4 The diameter of the circle (shown as a dotted line in the figure) is 1100 mm, and the first positioning block 403 and the second positioning block 502 are 3 mm higher than the outer wall of the supporting wall.

[0035] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A reflector primary mirror mounting substrate, characterized in that: It includes a substrate that is approximately hexagonal, including a first surface and a second surface, the first surface is used to connect to the device body, a through center positioning hole is provided at the center position of the substrate, a support wall surrounding the edge of the substrate is provided at the edge of the substrate, the center positioning hole and the support wall both extend outward perpendicular to the second surface; a first installation area and a second installation area are arranged at intervals on the inner side of the support wall, the first installation area and the second installation area are respectively adjacent to an edge of the substrate, a first connecting component is distributed in the first installation area, and a second connecting component is distributed in the second installation area, a plurality of supporting ribs are arranged between the first installation area and the second installation area, and three groups of supporting ribs are staggered to form a supporting area centered on the center positioning hole.

2. A reflector primary mirror mounting substrate as claimed in claim 1, characterized in that: The base plate comprises three long sides and three short sides, and transition arcs are arranged between adjacent long sides and short sides.

3. A reflector primary mirror mounting substrate as claimed in claim 2, characterized in that: A partition parallel to the short side is also provided on the first surface, and the partition, the short side and transition arcs on both sides thereof form the first installation area.

4. A reflector primary mirror mounting substrate as claimed in claim 2 or 3, characterized in that: A first positioning block is provided on the outer wall of one of the transition arcs in the first installation area.

5. A reflector primary mirror mounting substrate as claimed in claim 3, characterized in that: A first reinforcing rib plate connecting the partition plate and the short side is provided in the first installation area.

6. A reflector primary mirror mounting substrate as claimed in claim 2 or 3, characterized in that: An "L"-shaped connecting portion is formed between the bottom of the first installation area and the adjacent short side outer wall.

7. A reflector primary mirror mounting substrate as claimed in claim 2, characterized in that: The long side and the adjacent supporting ribs enclose the second installation area.

8. A reflector primary mirror mounting substrate as claimed in claim 7, characterized in that: A second reinforcing rib plate perpendicular to the long side is provided in the second installation area.

9. A reflector primary mirror mounting substrate as claimed in claim 1, 2, 7 or 8, characterized in that: A device interface mounting seat is provided on the bottom surface of the second mounting area.

10. A reflector primary mirror mounting substrate as claimed in claim 2, 7 or 8, characterized in that: Second positioning blocks are provided at both ends of the long side outer wall.

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