阅读说明：本技术 一种全捷联光学导引头结构 (Full strapdown optical seeker structure ) 是由 胡军 卢鑫 李显彦 李路 王乾明 蔡俊杰 颜有翔 李彪 陈赞 曾宇擘 周波 于 2020-12-18 设计创作，主要内容包括：本发明公开了一种全捷联光学导引头结构,包括舱体、光电探测组件、信息处理组件、支撑架、底座和多个支撑杆,信息处理组件紧固在支撑架内壁,多根支撑杆与支撑架连接形成骨架；光电探测组件固定安装在支撑架的定位面一上,支撑架安装在底座的定位面二上,舱体与光电探测组件的定心柱面配合并附以O型圈完成上部密封,再与底座的定位面二贴合并附以O型圈完成下部密封。本发明导引头结构既满足主承力结构的强度要求,又满足零件加工简单、整机装调方便的工艺要求,且结构更加模块化,维修性和互换性都得到了提升。(The invention discloses a full-strapdown optical seeker structure which comprises a cabin body, a photoelectric detection assembly, an information processing assembly, a support frame, a base and a plurality of support rods, wherein the information processing assembly is fastened on the inner wall of the support frame, and the plurality of support rods are connected with the support frame to form a framework; the photoelectric detection assembly is fixedly arranged on the first positioning surface of the supporting frame, the supporting frame is arranged on the second positioning surface of the base, the cabin body is matched with the centering cylindrical surface of the photoelectric detection assembly and attached with an O-shaped ring to complete upper sealing, and then the cabin body is attached with the second positioning surface of the base and attached with the O-shaped ring to complete lower sealing. The seeker structure not only meets the strength requirement of the main bearing structure, but also meets the process requirements of simple part processing and convenient whole machine assembly and adjustment, and the seeker structure is more modular, and the maintainability and interchangeability are improved.)

1. A full-strapdown optical guide head structure comprises a cabin body (1), a photoelectric detection assembly (4) and an information processing assembly (5), and is characterized in that the guide head structure further comprises a support frame (2), a base (3) and a plurality of support rods (6), wherein the information processing assembly (5) is fastened on the inner wall of the support frame (2) through screws; the plurality of support rods (6) are connected with the support frame (2) through screws to form a framework serving as a main bearing structure of the seeker; the photoelectric detection assembly (4) is fixedly arranged on a first positioning surface (21) of the support frame (2) through a fastener, and the optical axis of the photoelectric detection assembly (4) is consistent with the mechanical axis of the support frame (2); the support frame (2) is arranged on a second positioning surface (31) of the base (3), and the optical axis of the photoelectric detection assembly (4) is consistent with the mounting shaft of the base (3) to form a seeker core; the cabin body (1) is matched with the centering cylindrical surface of the photoelectric detection assembly (4) and attached with an O-shaped ring to complete upper sealing, and then is attached with the second positioning surface (31) of the base (3) and attached with the O-shaped ring to complete lower sealing.

2. The full strapdown optical guide head structure according to claim 1, wherein the base (3) is a trapezoidal table, the side wall of the trapezoidal table is matched with the inner wall of the bottom of the chamber body (1), and the outer surface of the base (3) is consistent with the outer surface of the chamber body (1) in shape to form an integral pneumatic shape; and the edge of the base (3) is provided with a mounting hole (7), the bottom of the cabin body (1) is also provided with a mounting hole (7), and the position of the mounting hole (7) at the edge of the base (3) corresponds to the position of the mounting hole (7) at the bottom of the cabin body (1).

3. The full strapdown optical guide head structure according to claim 1 or 2, wherein the middle portion of the base (3) is a second positioning surface (31), the middle portion of the second positioning surface (31) is provided with an annular groove (32), an end surface of the second positioning surface (31) is perpendicular to a cylindrical surface, and the cylindrical surface is coaxial with the external interface.

4. A full strapdown optical guide head structure according to claim 3, wherein the recess (32) is opened with a mounting hole (7), a plurality of ribs (33) are disposed between the inner walls of the recess (32) and the recess (3), each rib (33) is higher than the recess (32), and one of the ribs (33) is provided with a socket (34).

5. The full strapdown optical guide head structure according to claim 1, wherein the support frame (2) has a double-layer structure, an annular boss (23) is disposed at a lower portion of the support frame (2), and a mounting hole (7) is formed in the boss (23); an installation seat (24) is arranged on the outer edge of the boss (23), an installation hole (7) is formed in the installation seat (24), and the position of the installation hole (7) in the installation seat (24) corresponds to the position of the installation hole (7) in the groove (32); the upper part of the support frame (2) is a first positioning surface (21), and the first positioning surface (21) is fixedly connected with the boss (23) through a plurality of struts (22); the end face of the first positioning face (21) is perpendicular to the cylindrical surface, the lower end face of the first positioning face (24) is perpendicular to the outer cylindrical surface, the cylindrical surfaces of the first positioning face and the outer cylindrical surface are coaxial, and mounting holes 7 are formed in the first positioning face (21), the plurality of supporting columns (22) and the boss (23).

6. The full strapdown optical guide head structure according to claim 1, wherein the support rod (6) has a mounting hole (7) formed at both ends and at a middle portion thereof, and the support rod (6) has a protruding middle portion.

7. The full strapdown optical guide head structure according to claim 1, wherein said photo-detection assembly (4) comprises a fairing (41), a fairing ring (42), a lens barrel (43), a detector mounting seat (44), and a four-quadrant detector (45), wherein an optical lens is mounted in said lens barrel (43); the fairing (41) is fixed on the lens cone (43) through a fairing pressing ring (42), and the outer surface of the fairing pressing ring (42) is consistent with that of the fairing (41); the four-quadrant detector (45) is arranged on the detector mounting seat (44), and the detector mounting seat (44), the four-quadrant detector (45) and the lens cone (43) finish the lower sealing of the photoelectric detection assembly (4), so that the photoelectric detection assembly (4) forms an integral sealing structure.

8. The full strapdown optical guide head structure of claim 7, wherein said probe mount (44) is made of a non-metallic material.

Technical Field

The invention belongs to the technical field of optical seeker structure design, and particularly relates to a full strapdown optical seeker structure.

Background

Since the twenty-first century, accurate guidance has become one of the necessary performance requirements of modern weapon systems, and the traditional platform type seeker is high in cost, complex in adjustment and not suitable for large-scale train installation, so that a low-cost full-strapdown seeker is produced. However, the existing full-strapdown optical seeker generally utilizes a cabin as a main bearing structure, and components such as an optical lens, a photoelectric detector, an information processing assembly and the like are directly installed on the cabin, so that the seeker cabin is required to have high strength and high precision to ensure the consistency of an optical axis and a mechanical installation shaft, thereby greatly increasing the processing difficulty of the seeker cabin and improving the processing cost; meanwhile, as the main components are directly arranged in the guide head, the operation difficulty of the work of assembling, debugging, maintaining and the like of the guide head is increased.

Disclosure of Invention

The invention aims to provide a brand new full strapdown optical guide head structure in order to enable the guide head to meet the strength requirement of a main bearing structure and meet the process requirements of simple part processing and convenient whole machine assembly and adjustment.

In order to achieve the purpose, the invention adopts the following technical scheme:

a full-strapdown optical seeker structure comprises a cabin body, a photoelectric detection assembly and an information processing assembly, and is characterized in that the seeker structure further comprises a support frame, a base and a plurality of support rods, the information processing assembly is fastened on the inner wall of the support frame through screws, accessibility and maintainability are improved, the information processing assembly can be tested and replaced without causing optical axis running during debugging and maintenance, and the support rods are connected with the support frame through screws to form a framework serving as a main bearing structure of the seeker; the photoelectric detection assembly is fixedly arranged on the first positioning surface of the support frame through a fastener, and the optical axis of the photoelectric detection assembly is consistent with the mechanical axis of the support frame; the support frame is arranged on the second positioning surface of the base, and the optical axis of the photoelectric detection assembly is consistent with the installation shaft of the base, so that a seeker core is formed; the cabin body is matched with the centering cylindrical surface of the photoelectric detection assembly and attached with an O-shaped ring to complete upper sealing, and then is attached with the second positioning surface of the base and attached with the O-shaped ring to complete lower sealing, so that the core of the seeker is protected in a closed space.

Furthermore, the base is a trapezoidal table, the side wall of the base is matched with the inner wall of the bottom of the cabin body, and a closed space can be formed when the cabin body covers the base, so that the seeker has better overall sealing performance and plays a role in protecting each internal device; the outer surface of the base is consistent with the outer surface of the cabin body in shape, and the overall pneumatic shape is kept; and the edge of the base is provided with mounting holes, the bottom of the cabin body is also provided with mounting holes, the positions of the mounting holes at the edge of the base correspond to the positions of the mounting holes at the bottom of the cabin body, and the mounting holes of the base and the mounting holes are fixed by screws when the mounting holes are installed in place, so that the firmness of the seeker can be enhanced.

Furthermore, the middle part of the base is a second positioning surface, the middle part of the second positioning surface is provided with an annular groove, the end surface of the second positioning surface and the cylindrical surface have a mutual perpendicularity requirement, and the cylindrical surface has a coaxiality requirement on an external interface, so that the reference conversion on the external installation interface is completed; the groove is provided with a mounting hole; a plurality of reinforcing ribs are arranged between the inner walls of the groove and the base, each reinforcing rib is higher than the groove, a socket is arranged on one reinforcing rib, and the weight of parts can be reduced on the premise of ensuring the mechanical strength of the base by arranging the reinforcing ribs.

Furthermore, the support frame is of a double-layer structure, an annular boss is arranged at the lower part of the support frame, and a mounting hole is formed in the boss; the outer edge of the boss is provided with a mounting seat, a mounting hole is formed in the mounting seat, and the position of the mounting hole in the mounting seat corresponds to the position of the mounting hole in the groove; the upper part of the support frame is a first positioning surface, and the first positioning surface is fixedly connected with the boss through a plurality of struts; the end face and the cylindrical surface of the first positioning face have verticality requirements, and the lower end face and the outer edge cylindrical surface of the first positioning face also have verticality requirements; meanwhile, the cylindrical surfaces of the two parts have coaxiality requirements, so that the conversion of the installation reference from top to bottom is completed. Mounting holes are formed in the first positioning face, the plurality of supporting columns and the bosses, wherein a group of mounting holes in the supporting columns are mainly used for adjusting the mounting positions of the supporting columns up and down according to the thickness of the information processing assembly, and meanwhile, unused mounting holes can be used for cable routing, so that the overall routing specification is free from interference.

Furthermore, the mounting holes are formed in the end portion and the middle portion of the supporting rod, the middle portion of the supporting rod protrudes, the rigidity of the supporting rod is lower than that of the supporting frame after the appearance, the size and the material of the supporting rod are reasonably designed, the supporting rod can be elastically deformed in a self-adaptive mode when the information processing assembly is fastened and mounted, the supporting frame is not deformed, and therefore the uniqueness after the mounting reference is converted is guaranteed.

Furthermore, the photoelectric detection assembly comprises a fairing, a fairing pressing ring, a lens barrel, a detector mounting seat and a four-quadrant detector, wherein an optical lens is mounted in the lens barrel; the fairing is fixed on the lens cone through a fairing pressing ring, so that the upper part of the photoelectric detection assembly is sealed; and the shape of the fairing pressing ring is consistent with that of the outer surface of the fairing, so that the integral aerodynamic shape is kept. The four-quadrant detector is arranged on the detector mounting seat, and the detector mounting seat, the four-quadrant detector and the lens cone finish the lower sealing of the photoelectric detection assembly, so that the photoelectric detection assembly forms an integral sealing structure. The detector mounting seat is made of nonmetal materials, so that the four-quadrant detector can be mounted and fixed, and the requirement on insulativity can be met. When the optical lens in the lens cone and the four-quadrant detector are integrally airtight, the sealing structure can be independent of other core devices, so that the integral maintainability is improved, and repeated nitrogen filling and drying operations during debugging or maintenance are avoided.

Compared with the prior art, the beneficial effects of the invention are embodied in the following aspects:

(1) the cabin body is no longer used as a main bearing structure, and the optical lens, the photoelectric detector, the information processing assembly and other components are all arranged on the supporting frame, so that the cabin body processing difficulty is greatly reduced, and the processing cost is saved.

(2) During installation, the optical axis of the photoelectric detection assembly and the mechanical axis of the support frame are adjusted to be consistent, and meanwhile, the optical axis of the photoelectric detection assembly and the installation axis of the base are adjusted to be consistent, so that a seeker core can be formed, the assembly and debugging difficulty of the seeker is greatly reduced, and the seeker is more suitable for large-scale production.

(3) The optical seeker structure is more modularized, and maintainability and interchangeability are improved.

(4) The cabin body as a cover body can form a closed space on the guide head core, so that the guide head has better integral sealing performance.

Drawings

FIG. 1 is a schematic diagram of the present invention;

FIG. 2 is a schematic view of the structure of the cabin;

FIG. 3 is a schematic structural view of the support frame;

FIG. 4 is a schematic view of the structure of the base;

FIG. 5 is a schematic view of the support rod;

FIG. 6 is a core view of the seeker;

fig. 7 is a schematic structural view of the photodetection assembly.

In the figure: 1. cabin body, 2, support frame, 21, locating surface one, 22, pillar, 23, boss, 24, mount pad, 3, base, 31, locating surface two, 32, recess, 33, strengthening rib, 34, socket, 4, photoelectric detection subassembly, 41, radome fairing, 42, radome fairing clamping ring, 43, lens cone, 44, detector mount pad, 45, four-quadrant detector, 5, information processing subassembly, 6, bracing piece, 7, mounting hole.

Detailed Description

The full strapdown optical guide head structure of the present invention is described in detail below with reference to the accompanying drawings.

As shown in fig. 1-6, a full strapdown optical seeker structure includes a cabin 1, a support frame 2, a base 3, a photoelectric detection assembly 4, an information processing assembly 5, and two support rods 6; the information processing assembly 5 is fastened on the inner wall of the support frame 2 through screws, accessibility and maintainability are improved, and the information processing assembly 5 can be tested and replaced without causing the optical axis to run during debugging and maintenance. The two support rods 6 are connected with the support frame 2 through screws to form a framework as a main bearing structure of the seeker; the photoelectric detection component 4 is fixedly arranged on the first positioning surface 21 of the support frame 2 through a fastener, and the optical axis of the photoelectric detection component 4 is consistent with the mechanical axis of the support frame 2; the support frame 2 is arranged on the second positioning surface 31 of the base 3, and the optical axis of the photoelectric detection assembly 4 is consistent with the installation shaft of the base 3, so that a seeker core is formed; the cabin body 1 is matched with the centering cylindrical surface of the photoelectric detection assembly 4 and attached with an O-shaped ring to complete upper sealing, and then is attached with the second positioning surface 31 of the base 3 and attached with the O-shaped ring to complete lower sealing, so that the core of the seeker is protected in a closed space.

As shown in fig. 4, the base 3 is a trapezoidal platform, the side wall of which is matched with the inner wall of the bottom of the cabin 1, and when the cabin 1 is covered on the base 3, a closed space can be formed, so that the seeker has better integral air tightness and plays a role in protecting each internal device; the outer surface of the base 3 is consistent with the outer surface of the cabin body 1 in shape, and the overall pneumatic shape is kept. And the edge of the base 3 is provided with a mounting hole 7, the bottom of the cabin body 1 is also provided with a mounting hole 7, the position of the mounting hole 7 at the edge of the base 3 corresponds to the position of the mounting hole 7 at the bottom of the cabin body 1, and when the mounting holes 7 of the base and the cabin body are mounted in place, the fixing holes are fixed through screws, so that the firmness of the guide head can be enhanced.

The middle part of the base 3 is a second positioning surface 31, the middle part of the second positioning surface 31 is provided with an annular groove 32, the end surface of the second positioning surface 31 and the cylindrical surface have a mutual perpendicularity requirement, and the cylindrical surface has a coaxiality requirement on an external interface, so that the reference conversion on the external installation interface is completed; the groove 32 is provided with a mounting hole 7; a plurality of reinforcing ribs 33 are arranged between the groove 32 and the inner wall of the base 3, the height of each reinforcing rib 33 is higher than that of the groove 32, a socket 34 is arranged on one reinforcing rib 33, and the weight of parts can be reduced on the premise of ensuring the mechanical strength of the base 3 by arranging the reinforcing ribs 33.

As shown in fig. 3, the support frame 2 is a double-layer structure, an annular boss 23 is arranged at the lower part of the support frame 2, and a mounting hole 7 is formed on the boss 23; the outer edge of the boss 23 is provided with a mounting seat 24, the mounting seat 24 is provided with a mounting hole 7, and the position of the mounting hole 7 on the mounting seat 24 corresponds to the position of the mounting hole 7 on the groove 32; the upper part of the support frame 2 is a first positioning surface 21, and the first positioning surface 21 is fixedly connected with the boss 23 through four pillars 22; the end face and the cylindrical surface of the first positioning face 21 have verticality requirements, and the lower end face and the outer edge cylindrical surface of the first positioning face 24 also have verticality requirements; meanwhile, the cylindrical surfaces of the two parts have coaxiality requirements, so that the conversion of the installation reference from top to bottom is completed. Mounting holes 7 are formed in the first positioning face 21, the four supporting columns 22 and the boss 23, wherein a group of mounting holes 7 in each supporting column 22 are mainly used for adjusting the mounting position up and down according to the thickness of the information processing assembly 5, and meanwhile, unused mounting holes can be used for cable routing, so that the overall routing specification is free from interference.

As shown in fig. 5, the end and the middle of the support rod 6 are provided with mounting holes 7, and the middle of the support rod 6 protrudes, so that the rigidity of the support rod 6 is lower than that of the support frame 2 after the appearance, the size and the material of the support rod 6 are reasonably designed, and when the information processing assembly 5 is fastened and mounted, the support rod 6 can be elastically deformed in a self-adaptive manner without causing deformation of the support frame 2, thereby ensuring the uniqueness after the mounting reference is converted.

As shown in fig. 7, the photodetection assembly 4 includes a fairing 41, a fairing clamping ring 42, a lens barrel 43, a detector mounting seat 44, and a four-quadrant detector 45, wherein an optical lens is installed in the lens barrel 43; the fairing 41 is fixed on the lens cone 43 through a fairing clamping ring 42, so that the upper part of the photoelectric detection assembly 4 is sealed; and the cowl clamp ring 42 conforms to the outer surface of the cowl 41, thereby maintaining the overall aerodynamic shape. The four-quadrant detector 45 is mounted on the detector mounting base 44, and the detector mounting base 44, the four-quadrant detector 45 and the lens barrel 43 complete the lower sealing of the photoelectric detection assembly 4, so that the photoelectric detection assembly 4 forms an integral sealing structure. The detector mounting base 44 is made of nonmetal materials, so that the four-quadrant detector 45 can be mounted and fixed, and the requirement of insulation can be met. When the optical lens in the lens barrel 43 and the four-quadrant detector 45 are integrally airtight, the sealing structure can be independent of other core devices, so that the overall maintainability is improved, and repeated nitrogen filling and drying operations during debugging or maintenance are avoided.

The working principle is as follows: when the full strapdown optical guide head structure is assembled, firstly, the information processing component 5 is fastened on the mounting seat 24 of the support frame 2 through screws, and then the two support rods 6 are connected with the support frame 2 through screws to form a framework as a main bearing structure of the guide head; secondly, mounting the photoelectric detection component 4 on a first positioning surface 21 of the support frame 2, fixing the photoelectric detection component by using a fastener, and ensuring that the optical axis of the photoelectric detection component 4 is consistent with the mechanical axis of the support frame 2; then the supporting frame 2 provided with the photoelectric detection component 4 and the information processing component 5 is arranged on a second positioning surface 31 of the base 3, specifically, the mounting seat 24 at the outer edge of the boss 23 is arranged in an annular groove 32 in the middle of the second positioning surface 31, and the optical axis of the photoelectric detection component 4 is ensured to be consistent with the mounting shaft of the base 3, so that a seeker core is formed; at the moment, the guide head has debugging conditions, and after the special tool is used for calibration, the cabin body 1 is covered on the guide head core to form a closed space.

The optical seeker structure is more modularized and is more convenient to maintain and exchange in the future due to the framework mode formed by the support frame 2, the base 3 and the support rods 6. The lens barrel 43, the optical lens and the four-quadrant detector 45 are all conventional products, which are not within the scope of the present invention, and the components and structures thereof will not be described in detail herein.