Optical fiber inertial navigation structure

Abstract

The utility model provides an optical fiber inertial navigation structure which comprises an optical fiber gyroscope group and a meter adding group, and further comprises an outer cover, the inertial navigation support comprises a base, a first mounting seat, a second mounting seat and at least one third mounting seat, the first mounting seat, the second mounting seat and the third mounting seat are integrally and fixedly arranged on the base, the first mounting seat, the second mounting seat and the third mounting seat extend into the outer cover, and a mounting cavity is formed among the first mounting seat, the second mounting seat and the third mounting seat; the mounting cavity and the first mounting seat are provided with a plurality of first mounting point positions for fixing the fiber-optic gyroscope group, the second mounting seat is provided with a plurality of second mounting point positions for fixing the fiber-optic gyroscope group, and the third mounting seat is provided with a plurality of third mounting point positions; and the mounting plate is arranged at the third mounting point position, so that the mounting plate is suspended above the mounting cavity and is used for fixing a power panel and a navigation panel. The utility model solves the technical problems of poor stability and large volume of the traditional optical fiber inertial navigation structure.

Description

Technical Field

[0001] The utility model relates to the technical field of optical fiber inertial navigation, in particular to an optical fiber inertial navigation structure. Background Art

[0002] The fiber optic gyro inertial navigation system mainly includes a fiber optic gyro group, a meter group, multiple mounting seats, a navigation board, and a power board. The fiber optic gyro group is divided into three fiber optic gyros perpendicular to each other, and the meter group is divided into three meters perpendicular to each other, which are installed at each mounting seat. This type of structure requires a large number of parts to be processed, and the connection of the structural parts is connected by screws. Since the inertial navigation system is subject to large shocks and vibrations, this type of structure will often greatly affect its performance when subjected to large shocks and vibrations. At the same time, the processing of multiple parts will also cost more and the external dimensions will also be larger. Utility Model Content

[0003] In view of the deficiencies in the prior art, the utility model provides a fiber optic inertial navigation structure to solve the technical problems of poor stability and large volume of the traditional fiber optic inertial navigation structure in the related technology.

[0004] The utility model provides a fiber optic inertial navigation structure, including a fiber optic gyroscope group and a meter group, and the fiber optic inertial navigation structure includes:

[0005] Outer cover;

[0006] An inertial navigation bracket, comprising a base and a first mounting seat, a second mounting seat and at least one third mounting seat integrally fixed to the base, wherein the first mounting seat, the second mounting seat and the third mounting seat extend into the outer cover and form a mounting cavity therebetween, the mounting cavity and the first mounting seat are provided with a plurality of first mounting points for fixing the fiber optic gyroscope group, the second mounting seat is provided with a plurality of second mounting points for fixing the meter group, and the third mounting seat is provided with a plurality of third mounting points;

[0007] The mounting plate is arranged at the third mounting point so that the mounting plate is suspended above the mounting cavity and is used to fix the power board and the navigation board.

[0008] Furthermore, the first mounting seat includes a side panel 1 and a side panel 2 which are vertically connected, the side panel 1 and the side panel 2 are both vertically connected to the base, and the first mounting point is formed on the side panel 1 and the side panel 2.

[0009] Furthermore, the side panel 1 and / or the side panel 2 is provided with a notch, and the notch is communicated with the installation cavity for avoiding the installation plate.

[0010] Furthermore, the first installation point is a first threaded through hole.

[0011] Furthermore, the second mounting seat includes three connected mounting surfaces, any two of the three mounting surfaces are perpendicular to each other, and the second mounting point is formed on each of the mounting surfaces.

[0012] Further, the second installation point is a second threaded through hole; and / or

[0013] The second installation point is a installation groove.

[0014] Furthermore, at least one of the mounting surfaces extends outwardly to form an integral supporting surface for supporting the mounting plate.

[0015] Furthermore, the third mounting seat is a columnar structure, and the third mounting point is a third threaded through hole formed on the top of the third mounting seat.

[0016] Furthermore, the navigation board, the power board and the mounting board are detachably connected to the third threaded through hole in the up and down directions in sequence, the fiber optic gyroscope group and the meter adding group are used to be connected to the navigation board as input ends, and the power board is used to supply power to the navigation board.

[0017] Furthermore, the outer cover is provided with a plurality of sockets for connecting to the navigation board as output terminals; and / or

[0018] The base is provided with a groove for accommodating the conductive rubber plate, and the outer cover presses the conductive rubber plate tightly into the groove.

[0019] Compared with the prior art, the utility model has the following beneficial effects: the first mounting seat, the second mounting seat and the third mounting seat are all integrally formed on the base to form an inertial navigation bracket for mounting the fiber optic gyroscope group and the meter group, replacing the original mounting seat with screw fixing method, thereby improving the rigidity of the inertial navigation bracket and making its structure more stable; furthermore, a mounting cavity is constructed between the mounting seats, and the mounting cavity and the first mounting seat are both provided with a first mounting point, so that the fiber optic gyroscope group can be respectively installed at the corresponding position, and the second mounting seat is provided with a second mounting point, so that the meter group can be centrally installed and fixed on the second mounting seat, and the third mounting seat is provided with a third mounting point, which is used to install the power board and the guide plate above the mounting cavity through the mounting plate. Through the setting of each mounting point, the structural parts can be reasonably arranged on the inertial navigation bracket, and the space above the mounting cavity can be used to reduce the overall external dimensions of the fiber optic inertial navigation structure, make the overall weight lighter, and reduce the processing cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of a fiber optic inertial navigation structure in one embodiment of the utility model;

[0021] Figure 2This is a schematic diagram of the structure of the fiber optic inertial navigation structure in one embodiment of the utility model after the outer cover is omitted;

[0022] Figure 3 for Figure 2 Partial exploded view;

[0023] Figure 4 It is a schematic structural diagram of an inertial navigation bracket in one embodiment of the utility model.

[0024] Description of Figure Numbers:

[0025] 1. Fiber optic gyroscope assembly; 2. Meter assembly; 3. Outer cover; 4. Base; 5. First mounting seat; 501. Side panel one; 502. Side panel two; 503. Notch; 504. First threaded through hole; 6. Second mounting seat; 601. Mounting surface; 602. Second threaded through hole; 603. Mounting groove; 604. Support surface; 7. Third mounting seat; 701. Third threaded through hole; 8. Mounting cavity; 9. Power board; 10. Navigation board; 11. Socket; 12. Conductive rubber sheet; 13. Mounting plate.

[0026] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solution and beneficial effects of the utility model more clear, the technical solution of the utility model is further described below in conjunction with the drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0028] In the embodiment of the present utility model, as shown in FIG. Figure 1-Figure 4 As shown, the fiber optic inertial navigation structure includes: a fiber optic gyroscope group 1, a meter group 2, an outer cover 3, an inertial navigation bracket and a mounting plate 13; the inertial navigation bracket includes a base 4 and a first mounting seat 5, a second mounting seat 6 and at least one third mounting seat 7 integrally fixed to the base 4, the first mounting seat 5, the second mounting seat 6 and the third mounting seat 7 extend into the outer cover 3, and a mounting cavity 8 is constructed therebetween, the mounting cavity 8 and the first mounting seat 5 are provided with a plurality of first mounting points for fixing the fiber optic gyroscope group 1, the second mounting seat 6 is provided with a plurality of second mounting points for fixing the meter group 2, and the third mounting seat 7 is provided with a plurality of third mounting points; the mounting plate 13 is provided at the third mounting point, so that the mounting plate 13 is suspended above the mounting cavity 8, and is used to fix the power board 9 and the navigation board 10.

[0029] Specifically, in the embodiment of the utility model, the first mounting seat 5, the second mounting seat 6 and the third mounting seat 7 are all integrally formed on the base 4 to replace the original mounting seat fixed by screws; the inertial navigation bracket is processed in an integrated manner to make the bracket more rigid and avoid reducing its performance when subjected to large impact and vibration. Of course, each component is set at the base 4 by each mounting seat, which reduces the number of mounting seats used compared to the original inertial navigation; and it can be processed with aluminum alloy 2A12 T4, which can further reduce the weight of the inertial navigation in terms of material.

[0030] In the embodiment of the utility model, the first mounting seat 5 is arranged in two at intervals, and the second mounting seat 6 and the third mounting seat 7 are arranged at intervals, so that a rectangular mounting cavity 8 is enclosed between the mounting seats, and the mounting cavity 8 and the first mounting seat 5 are both provided with a first mounting point for fixing the fiber optic gyroscope group 1 (that is, one of the fiber optic gyroscope group 1 is fixed to the mounting cavity 8 through the first mounting point, and the remaining ones are all fixed to the first mounting seat 5); a second mounting point is provided on the second mounting seat 6 for fixing the meter group 2; at the same time, a third mounting point is provided on the third mounting seat 7 for fixing the mounting plate 13, so that the mounting plate 13 extends in the direction of the mounting cavity 8 to be suspended above the mounting cavity 8; in this way, on the one hand, the upper space of the mounting cavity 8 can be reasonably utilized, so that the mounting plate 13 is suspended above the fiber optic gyroscope, which is convenient for installing the power board 9 and the navigation board 10, optimizing the internal space of the fiber optic inertial navigation structure and reducing its overall appearance size; on the other hand, the power board 9 can be suspended above the mounting cavity 8 to facilitate its heat dissipation.

[0031] The utility model adopts an integrally formed inertial navigation bracket to make the inertial navigation more lightweight and have higher mechanical strength and rigidity; and through the reasonable layout of each mounting seat, the fiber optic gyroscope group 1 and the meter group 2 can be respectively installed and fixed at the corresponding mounting seats, and at the same time, the mounting plate 13 can be installed on the third mounting seat 7 so that the power board 9 can be suspended above the mounting cavity 8 by positioning the mounting plate 13, so that the upper space of the mounting cavity 8 is reasonably used, the overall appearance size of the inertial navigation is reduced, and the heat dissipation of the power board 9 is also convenient.

[0032] like Figure 4As shown, in one embodiment, the first mounting seat 5 includes a side panel 1 501 and a side panel 2 502 which are vertically connected, and the side panel 1 501 and the side panel 2 502 are both vertically connected to the base 4, and the first mounting point is formed on the side panel 1 501 and the side panel 2 502. Specifically, the fiber optic inertial navigation system group includes three fiber optic inertial navigation systems arranged along the XYZ three axes. In order to install the fiber optic inertial navigation system group on the three end faces of the first support frame, this embodiment defines the first mounting bracket as the side panel 1 501 and the side panel 2 502 which are perpendicular to each other; in this way, the two fiber optic inertial navigation systems in the fiber optic inertial navigation system group can be fixed to the corresponding side panels through the first mounting point, and since the side panel 1 501 and the side panel 2 502 are both vertically connected to the base 4, the first mounting point can also be set on the base 4 to install and fix the last fiber optic inertial navigation system, so that the three fiber optic inertial navigation systems are respectively arranged in three different perpendicular directions. As shown in FIG. Figure 4 As shown, the side panel 1 501 and the side panel 2 502 can constitute a T-shaped first mounting seat 5 ; in other embodiments, the two can also constitute an L-shaped first mounting seat 5 .

[0033] Further, in one embodiment, if Figure 4 As shown, the side panel 1 501 and / or the side panel 2 502 are provided with a notch 503, and the notch 503 is connected to the installation cavity 8, so as to avoid the installation plate 13. Specifically, in order to improve the installation stability of the installation plate 13, this embodiment provides a notch 503 on the side panel 1 501, and the opening of the notch 503 is set upward and connected to the installation cavity 8, so that a protrusion set on the peripheral surface of the installation plate 13 can extend into the notch 503, and the protrusion can be supported upward by the bottom of the notch 503; at the same time, the notch 503 and the third mounting seat 7 are located on the opposite sides of the rectangular installation cavity 8, so that the force of the installation plate 13 can be balanced. Of course, in other embodiments, the notch 503 is not limited to being provided on the side panel 1, and can also be provided on the side panel 2 502 according to the protrusion position of the installation plate 13, or the notch 503 can be provided on both the side panel 1 501 and the side panel 2 502 to avoid the shaking of the installation plate 13.

[0034] Preferably, the first installation point is a first threaded through hole 504, which is used to detachably fix the fiber optic gyroscope assembly 1 at a corresponding position after screwing in a screw.

[0035] like Figure 4As shown, in one embodiment, the second mounting seat 6 includes three connected mounting surfaces 601, any two of the three mounting surfaces 601 are perpendicular to each other, and the second mounting point is formed on each of the mounting surfaces 601. Specifically, the meter group 2 includes three meters arranged along three perpendicular surfaces. In order to mount and fix the three meters on three different surfaces, this embodiment defines that the second mounting seat 6 has three mounting surfaces 601, and any two of the three mounting surfaces 601 are perpendicular to each other, so that the meter group 2 can be mounted on the corresponding mounting surfaces 601 through each second mounting point.

[0036] Preferably, the second mounting point is a second threaded through hole 602, which is used for fixing the meter group 2 detachably after the screw is screwed in. Of course, in order to further fix the meter group 2 to the corresponding mounting surface 601 and reduce the overall appearance size of the meter group 2 and the second mounting seat 6, the second mounting point can also be a mounting groove 603, which is used to embed the meter at least partially therein for positioning the meter. It can be understood that the second mounting point can be only the second threaded through hole 602 or only the mounting groove 603; or adopt the following method: Figure 4 The combination of the two shown fixes the meter to the corresponding mounting surface 601 .

[0037] Further, in one embodiment, if Figure 4 As shown, at least one of the mounting surfaces 601 extends outwardly to form an integral supporting surface 604 for supporting the mounting plate 13 . Specifically, in order to further improve the installation stability of the mounting plate 13, the present embodiment provides a supporting surface 604 on the mounting surface 601 located in the horizontal direction, the mounting surface 601 and the supporting surface 604 are integrally formed, and the supporting surface 604 can be used to support the mounting plate 13 after extending outward, and with the cooperation of the third mounting seat 7 and the notch 503, four different mounting points of the mounting plate 13 can be positioned, so that the mounting plate 13 is still under force balance after the power board 9 and the navigation board 10 are installed; at the same time, the mounting plate 13 is further fixed to the above-mentioned notch 503 and the supporting surface 604 by screws, and because the third mounting seat 7 is a columnar structure, and the third mounting point is the third threaded through hole 701 formed at the top of the third mounting seat 7, the mounting plate 13 can be fixed to the third mounting seat 7 after the screw is screwed into the third threaded through hole 701, and the multi-point fixing method can improve the structural stability of the mounting plate 13, and the mounting plate 13 can be suspended above the mounting cavity 8.

[0038] like Figure 2 , Figure 3As shown, in one embodiment, the navigation board 10, the power board 9 and the mounting board 13 are detachably connected to the third threaded through hole 701 in the up-down direction, the fiber optic gyroscope group 1 and the meter group 2 are used to be connected to the navigation board 10 as input ends, and the power board 9 is used to supply power to the navigation board 10. Specifically, in order to install and fix the navigation board 10 and the power board 9 at the mounting board 13, the navigation board 10, the power board 9 and the mounting board 13 are arranged in intervals in the up-down direction in this embodiment, and the three are fixed at the corresponding third mounting point after being passed through by screws, and the adjacent two boards are supported by studs, so that a gap can be formed between the adjacent two boards for heat dissipation. The fiber optic gyroscope group 1 and the meter group 2 are used to be connected to the navigation board 10 as input ends, and the power board 9 is used to supply power to the navigation board 10; preferably, the outer cover 3 is provided with a plurality of sockets 11, which are used to be connected to the navigation board 10 as output ends.

[0039] like Figure 2 As shown, the base 4 is provided with a groove for accommodating the conductive rubber plate 12, and the outer cover 3 presses the conductive rubber plate 12 into the groove.

[0040] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A fiber optic inertial navigation structure, comprising a fiber optic gyroscope group and a meter group, characterized in that: The fiber optic inertial navigation structure comprises: Outer cover; An inertial navigation bracket, comprising a base and a first mounting seat, a second mounting seat and at least one third mounting seat integrally fixed to the base, wherein the first mounting seat, the second mounting seat and the third mounting seat extend into the outer cover and form a mounting cavity therebetween, the mounting cavity and the first mounting seat are provided with a plurality of first mounting points for fixing the fiber optic gyroscope group, the second mounting seat is provided with a plurality of second mounting points for fixing the meter group, and the third mounting seat is provided with a plurality of third mounting points; The mounting plate is arranged at the third mounting point so that the mounting plate is suspended above the mounting cavity and is used to fix the power board and the navigation board.

2. A fiber-optic inertial navigation structure as claimed in claim 1, characterized in that: The first mounting seat includes a side panel 1 and a side panel 2 which are vertically connected. The side panel 1 and the side panel 2 are both vertically connected to the base, and the first mounting point is formed on the side panel 1 and the side panel 2.

3. A fiber-optic inertial navigation structure as claimed in claim 2, characterized in that: The side plate 1 and / or the side plate 2 is provided with a notch, and the notch is communicated with the installation cavity for avoiding the installation plate.

4. A fiber-optic inertial navigation structure according to any one of claims 1 to 3, characterized in that: The first installation point is a first threaded through hole.

5. The fiber-optic inertial navigation structure according to claim 1, characterized in that: The second mounting seat includes three connected mounting surfaces, any two of the three mounting surfaces are perpendicular to each other, and the second mounting point is formed on each of the mounting surfaces.

6. The fiber-optic inertial navigation structure according to claim 5, characterized in that: The second mounting point is a second threaded through hole; and / or The second installation point is a installation groove.

7. The fiber-optic inertial navigation structure according to claim 5, characterized in that: At least one of the mounting surfaces extends outwardly to form an integral supporting surface for supporting the mounting plate.

8. The fiber-optic inertial navigation structure according to claim 1, characterized in that: The third mounting seat is a columnar structure, and the third mounting point is a third threaded through hole formed on the top of the third mounting seat.

9. The fiber-optic inertial navigation structure according to claim 8, characterized in that: The navigation board, the power board and the mounting board are detachably connected to the third threaded through hole in the up and down directions in sequence, the fiber optic gyroscope group and the meter adding group are used to be connected to the navigation board as input ends, and the power board is used to supply power to the navigation board.

10. The fiber-optic inertial navigation structure according to claim 9, characterized in that: The outer cover is provided with a plurality of sockets for connecting to the navigation board as output ends; and / or The base is provided with a groove for accommodating the conductive rubber plate, and the outer cover presses the conductive rubber plate tightly into the groove.

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