Embedded laser gyroscope inertial navigation device

Abstract

The utility model discloses an embedded laser gyro inertial navigation device, which relates to the technical field of inertial navigation devices and comprises a mounting shell and a laser gyro inertial navigation mechanism mounted in the mounting shell, a mounting cavity and a containing cavity are arranged in the mounting shell, the containing cavity is annular and is positioned on the outer side of the mounting cavity, a closed opening is formed at the upper end of the containing cavity, and the laser gyro inertial navigation mechanism is mounted in the mounting shell. An opening is formed in the upper end of the mounting cavity. The containing cavity communicates with the bottom of the mounting cavity through a communicating opening. The laser gyroscope inertial navigation device comprises a double-layer chamber, a laser gyroscope inertial navigation mechanism is arranged in the double-layer chamber, a mounting cavity is formed in the double-layer chamber, a lifting seat is slidably mounted in the mounting cavity, the lower end of the laser gyroscope inertial navigation mechanism is fixed to the upper end of the lifting seat, and the upper end of the lifting seat is fixedly connected with a top cover through a supporting rod. The embedded laser gyroscope inertial navigation device is more convenient to use in the installation and maintenance processes; and the flowing medium can protect the internal laser gyroscope inertial navigation mechanism, so that the temperature of the working environment tends to be stable.

Description

Technical Field

[0001] This utility model relates to the field of inertial navigation device technology, and in particular to an embedded laser gyroscope inertial navigation device. Background Technology

[0002] Laser gyroscopes have advantages such as insensitivity to gravity and stable scaling factor, making them more suitable for rotating inertial navigation systems than other gyroscopes.

[0003] A search revealed a patent document with publication number "CN218765321U" that discloses an underwater single-axis embedded laser gyroscope inertial navigation device, comprising: an upper cover, an outer cover, a bottom cover, and an inertial navigation component; an embedded laser gyroscope, a vibration damper, an accelerometer, an IMU mounting frame, and a base; wherein, the upper cover is fixed to the outer cover with screws; the bottom cover is fixed to the outer cover with screws after a sealing ring is installed; the inertial navigation component is fixed to the rotation mechanism component with screws; the embedded laser gyroscope, vibration damper, accelerometer, and magnetic shielding component are all fixed to the IMU mounting frame with screws; this embedded laser gyroscope inertial navigation device enables the laser gyroscope to operate in a relatively stable force field, improving the stability of the laser gyroscope output.

[0004] Based on the above search and combined with existing technology, it was found that existing embedded laser gyroscope inertial navigation devices are usually fixed inside the outer shell (a shell composed of a top cover, an outer cover, and a bottom cover). During installation or subsequent maintenance, the outer shell needs to be assembled or disassembled, which makes the assembly and maintenance of embedded laser gyroscope inertial navigation devices cumbersome and inconvenient to use. Therefore, there is a need for an embedded laser gyroscope inertial navigation device. Utility Model Content

[0005] The purpose of this application is to provide an embedded laser gyroscope inertial navigation device to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this application provides the following technical solution: an embedded laser gyroscope inertial navigation device, comprising a mounting shell and a laser gyroscope inertial navigation mechanism installed in the mounting shell, wherein the mounting shell has a double-layered chamber consisting of a mounting cavity and a mass cavity, the mass cavity being annular and located outside the mounting cavity, the upper end of the mass cavity forming a closed opening, the upper end of the mounting cavity forming an open opening, and the bottom of the mass cavity and the mounting cavity being connected through a communication port;

[0007] A lifting seat is slidably installed inside the mounting cavity. The lower end of the laser gyroscope inertial navigation mechanism is fixed to the upper end of the lifting seat. A top cover is fixedly connected to the upper end of the lifting seat through a support rod. The top cover is located above the laser gyroscope inertial navigation mechanism and covers the opening of the mounting cavity. The adapter of the laser gyroscope inertial navigation mechanism is located at the upper end of the top cover.

[0008] The container is filled with a constant-temperature flowing medium. A compression plug ring is slidably installed in the upper part of the container. The compression plug ring forms a seal with the inner and outer side walls of the container. A push rod is fixed at the upper end of the compression plug ring. The upper end of the push rod slides through the perforation at the top of the mounting shell and extends to the top of the mounting shell.

[0009] Preferably, the opening of the mounting cavity is provided with a cover groove with a diameter larger than the inner diameter of the mounting cavity. A tension ring is fixed in the cover groove. Under normal conditions, the inner diameter of the tension ring is smaller than the maximum outer diameter of the top cover. After the tension ring is squeezed by the top cover, it forms a limiting body with a smaller inner diameter above the top cover.

[0010] Preferably, the push rod has positioning holes at both the lower and upper parts, and a positioning pin is inserted into the positioning hole. The positioning pin is slidably connected to the upper end of the mounting shell, and one end of the positioning pin extends to the top of the mounting cavity.

[0011] Preferably, a limiting baffle and a limiting boss are integrally formed inside the mounting shell. The limiting baffle is located above the communication opening inside the mounting cavity, and the limiting boss is located at the bottom inside the cavity.

[0012] When the top cover is closed and the cavity is open, the bottom of the lifting seat abuts against the upper end of the limiting baffle; when the compression plug ring is pressed down, the upper end of the bulk cavity abuts against the lower end of the compression plug ring.

[0013] Preferably, an annular groove is provided on the periphery of the lifting seat, and a sealing ring is embedded in the annular groove, with the sealing ring having an interference fit with the inner wall of the mounting cavity.

[0014] Preferably, the compression plug ring includes a ring plate and a flexible plug ring. The ring plate is fixed to the lower end of the push rod, and the flexible plug ring is fixed to the bottom surface of the ring plate. The periphery of the flexible plug ring slides and adheres to the inner wall of the volumetric cavity to form a seal.

[0015] Preferably, the mounting housing is fixed with an inlet and an outlet that communicate with the bulk cavity, and a pressure ring is fixed at the upper end of the push rod.

[0016] In summary, the technical effects and advantages of this utility model are as follows:

[0017] 1. In this utility model, the double-layer chamber, lifting seat, top cover and compression plug ring facilitate the installation and maintenance of the laser gyroscope inertial navigation mechanism, making the embedded laser gyroscope inertial navigation device easier to use during installation and maintenance.

[0018] In addition, the flowing medium can protect the internal laser gyroscope inertial navigation mechanism, making its operating environment temperature more stable. This results in more accurate data generated by the laser gyroscope inertial navigation mechanism, improving the accuracy of the embedded laser gyroscope inertial navigation device and enhancing its performance.

[0019] 2. In this utility model, the position of the push rod can be limited by the setting of the positioning pin, so that the extrusion plug ring can stay at the bottom or top of the cavity, ensuring the stability of the lifting seat after raising and lowering, thereby avoiding accidental movement of the laser gyroscope inertial navigation mechanism. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the three-dimensional structure in this embodiment;

[0022] Figure 2 This is a cross-sectional view in this embodiment;

[0023] Figure 3 This is a schematic diagram of the lifting platform, laser gyroscope inertial navigation mechanism, and top cover structure in this embodiment;

[0024] Figure 4 This is a schematic diagram of the extrusion plug ring, push rod, and pressure ring structure in this embodiment;

[0025] Figure 5 This is a schematic diagram of the mounting shell and tensioning ring structure in this embodiment.

[0026] In the diagram: 1. Mounting shell; 11. Mounting cavity; 12. Capacity cavity; 13. Connecting port; 14. Limiting baffle; 15. Limiting boss; 16. Inlet; 17. Outlet; 18. Cover groove; 19. Perforation; 2. Lifting seat; 21. Ring groove; 22. Sealing ring; 23. Support rod; 3. Laser gyroscope inertial navigation mechanism; 31. Adapter; 4. Top cover; 5. Extrusion plug ring; 51. Ring plate; 52. Flexible plug ring; 6. Push rod; 61. Positioning hole; 7. Pressure ring; 8. Positioning pin; 9. Tensioning ring. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] Example: Reference Figures 1-5An embedded laser gyroscope inertial navigation device is shown, including a mounting shell 1 and a laser gyroscope inertial navigation mechanism 3 installed in the mounting shell 1. The laser gyroscope inertial navigation mechanism 3 includes an inertial navigation component and a rotation mechanism component in the prior art. The mounting shell 1 has a double-layered chamber with a mounting cavity 11 and a mass cavity 12. The mass cavity 12 is annular and located outside the mounting cavity 11. The upper end of the mass cavity 12 forms a closed opening, and the upper end of the mounting cavity 11 forms an open opening. The bottom of the mass cavity 12 and the mounting cavity 11 are connected through a communication port 13.

[0029] A lifting seat 2 is slidably installed in the mounting cavity 11. The lower end of the laser gyroscope inertial navigation mechanism 3 is fixed to the upper end of the lifting seat 2. The upper end of the lifting seat 2 is fixedly connected to the top cover 4 through the support rod 23. The top cover 4 is located above the laser gyroscope inertial navigation mechanism 3 and covers the opening of the mounting cavity 11. The adapter 31 of the laser gyroscope inertial navigation mechanism 3 is located at the upper end of the top cover 4.

[0030] The volumetric cavity 12 is filled with a constant-temperature flowing medium. A compression plug ring 5 is slidably installed in the upper part of the volumetric cavity 12. The compression plug ring 5 forms a seal with the inner and outer side walls of the volumetric cavity 12. A push rod 6 is fixed at the upper end of the compression plug ring 5. The upper end of the push rod 6 slides through the perforation 19 at the top of the mounting shell 1 and extends to the top of the mounting shell 1. A pressure ring 7 is fixed at the upper end of the push rod 6.

[0031] Based on the above structure, during installation or maintenance, the operator only needs to push the push rod 6 to press down the compression plug ring 5, which will compress the flowing medium in the volume chamber 12, allowing the flowing medium to enter the installation chamber 11 through the connecting port 13. This will push the lifting seat 2 in the installation chamber 11 to rise, thereby pushing the top cover 4 to rise and pushing the compression plug ring 5 to the top of the installation chamber 11 (if the laser gyroscope inertial navigation mechanism 3 has been installed, it can also be pushed out of the installation chamber 11). This facilitates the installation and maintenance of the laser gyroscope inertial navigation mechanism 3, making the embedded laser gyroscope inertial navigation device easier to use during installation and maintenance.

[0032] In addition, the flowing medium can protect the internal laser gyroscope inertial navigation mechanism 3, making its operating environment temperature more stable, thereby making the various data generated by the laser gyroscope inertial navigation mechanism 3 more accurate, improving the accuracy of the embedded laser gyroscope inertial navigation device, and making it more effective.

[0033] Furthermore, the opening of the mounting cavity 11 is provided with a cover groove 18 with a diameter larger than the inner diameter of the mounting cavity 11. A tension ring 9 is fixed in the cover groove 18. Under normal conditions, the inner diameter of the tension ring 9 is smaller than the maximum outer diameter of the top cover 4. After the tension ring 9 is squeezed by the top cover 4, it forms a limiting body (deformed ring) with a smaller inner diameter above the top cover 4.

[0034] By setting the tensioning ring 9, the top cover 4 of the mounting cavity 11 can be limited, making it difficult for the top cover 4 to undergo axial displacement, while ensuring the sealing performance of the top cover 4 after it is closed.

[0035] Furthermore, the push rod 6 has positioning holes 61 at both the lower and upper parts, and a positioning pin 8 is inserted into the positioning hole 61. The positioning pin 8 is slidably connected to the upper end of the mounting shell 1, and one end of the positioning pin 8 extends to the upper part of the mounting cavity 11.

[0036] By setting the positioning pin 8, the position of the push rod 6 can be limited, so that the compression plug ring 5 can stay at the bottom or top of the cavity 12, ensuring the stability of the lifting seat 2 after it is raised and lowered, thereby preventing the laser gyroscope inertial navigation mechanism 3 from moving unexpectedly.

[0037] Furthermore, a limiting baffle 14 and a limiting boss 15 are integrally formed inside the mounting shell 1. The limiting baffle 14 is located above the communication port 13 inside the mounting cavity 11, and the limiting boss 15 is located at the bottom inside the container cavity 12.

[0038] When the top cover 4 closes the opening of the mounting cavity 11, the bottom of the lifting seat 2 abuts against the upper end of the limiting baffle 14; when the compression plug ring 5 is pressed down, the upper end of the volume cavity 12 abuts against the lower end of the compression plug ring 5, thereby preventing the connecting port 13 from being blocked, and preventing the flowing medium from entering the lifting seat 2 or the area above the compression plug ring 5, thus ensuring that the flowing medium can flow smoothly back and forth through the connecting port 13.

[0039] Furthermore, an annular groove 21 is provided on the two sides of the lifting seat, and a sealing ring 22 is embedded in the annular groove 21. The sealing ring 22 is interference-fitted with the inner wall of the mounting cavity 11.

[0040] The compression plug ring 5 includes a ring plate 51 and a flexible plug ring 52. The ring plate 51 is fixed to the lower end of the push rod 6, and the flexible plug ring 52 is fixed to the bottom surface of the ring plate 51. The periphery of the flexible plug ring 52 slides and adheres to the inner wall of the volume cavity 12 to form a seal.

[0041] Furthermore, the mounting housing 1 is fixed with an inlet 16 and an outlet 17 that communicate with the bulk medium 12, and both the inlet 16 and the outlet 17 are equipped with switch valves, so as to facilitate the replacement of the flowing medium in the bulk medium 12.

[0042] In addition, the pipe for externally circulating the flowing medium can be connected to the inlet 16 and the outlet 17, so that the flowing medium can always maintain a constant temperature, thereby achieving the effect of keeping the embedded laser gyroscope inertial navigation device in constant temperature operation and making its operation more accurate.

[0043] The working principle of this utility model is as follows: During daily use, when installing or maintaining the device, the operator only needs to use the pressure ring 7 and push rod 6 to push down the compression plug ring 5, which will compress the flowing medium in the volume cavity 12, allowing the flowing medium to enter the installation cavity 11 through the connecting port 13. This will push the lifting seat 2 in the installation cavity 11 to rise, thereby pushing the top cover 4 to rise and pushing the compression plug ring 5 to the top of the installation cavity 11. This facilitates the installation and maintenance of the laser gyroscope inertial navigation mechanism 3, making the embedded laser gyroscope inertial navigation device easier to use during installation and maintenance.

[0044] In addition, the flowing medium can protect the internal laser gyroscope inertial navigation mechanism 3, making its operating environment temperature more stable, thereby making the various data generated by the laser gyroscope inertial navigation mechanism 3 more accurate, improving the accuracy of the embedded laser gyroscope inertial navigation device, and making it more effective.

[0045] It should be further noted that the technical features such as the laser gyroscope inertial navigation mechanism 3 and the adapter 31 involved in this utility model patent application should be regarded as prior art. The specific structure, working principle and possible control method and spatial arrangement of these technical features can be adopted by conventional choices in the field and should not be regarded as the inventive point of this utility model patent. This utility model patent will not elaborate further.

[0046] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An integrated laser gyro inertial navigation device comprising a mounting case (1) and a laser gyro inertial navigation mechanism (3) mounted in the mounting case (1), characterized in that: The mounting shell (1) has a double-layered chamber consisting of a mounting cavity (11) and a container cavity (12). The container cavity (12) is annular and located outside the mounting cavity (11). The upper end of the container cavity (12) is closed, and the upper end of the mounting cavity (11) is open. The bottom of the container cavity (12) and the mounting cavity (11) are connected through a communication port (13). A lifting seat (2) is slidably installed in the mounting cavity (11). The lower end of the laser gyroscope inertial navigation mechanism (3) is fixed to the upper end of the lifting seat (2). The upper end of the lifting seat (2) is fixedly connected to a top cover (4) by a support rod (23). The top cover (4) is located above the laser gyroscope inertial navigation mechanism (3) and covers the opening of the mounting cavity (11). The adapter (31) of the laser gyroscope inertial navigation mechanism (3) is located at the upper end of the top cover (4). The container (12) is filled with a constant temperature flowing medium. A compression plug ring (5) is slidably installed in the upper part of the container (12). The compression plug ring (5) forms a seal with the inner and outer side walls of the container (12). A push rod (6) is fixed at the upper end of the compression plug ring (5). The upper end of the push rod (6) slides through the perforation (19) at the top of the mounting shell (1) and extends to the top of the mounting shell (1).

2. The embedded laser gyro inertial navigation device according to claim 1, characterized in that: The opening of the mounting cavity (11) is provided with a cover groove (18) with a diameter larger than the inner diameter of the mounting cavity (11). A tension ring (9) is fixed in the cover groove (18). Under normal conditions, the inner diameter of the tension ring (9) is smaller than the maximum outer diameter of the top cover (4). After the tension ring (9) is squeezed by the top cover (4), it forms a limiting body with a smaller inner diameter above the top cover (4).

3. An inertial navigation device according to claim 2, wherein: The push rod (6) has positioning holes (61) at both the lower and upper parts. A positioning pin (8) is inserted into the positioning hole (61). The positioning pin (8) is slidably connected to the upper end of the mounting shell (1). One end of the positioning pin (8) extends to the top of the mounting cavity (11).

4. The embedded laser gyro inertial navigation device of claim 2, wherein: The mounting shell (1) is integrally formed with a limiting baffle (14) and a limiting boss (15). The limiting baffle (14) is located above the communication port (13) in the mounting cavity (11), and the limiting boss (15) is located at the bottom of the container cavity (12). When the top cover (4) closes the opening of the mounting cavity (11), the bottom of the lifting seat (2) abuts against the upper end of the limiting baffle (14); when the compression plug ring (5) is pressed down, the upper end of the volume cavity (12) abuts against the lower end of the compression plug ring (5).

5. The embedded laser gyro inertial navigation device of claim 1, wherein: The lifting seat (2) has an annular groove (21) on its periphery, and a sealing ring (22) is embedded in the annular groove (21). The sealing ring (22) is interference-fitted with the inner wall of the mounting cavity (11).

6. An inertial navigation device according to claim 5, wherein: The compression plug ring (5) includes a ring plate (51) and a flexible plug ring (52). The ring plate (51) is fixed to the lower end of the push rod (6), and the flexible plug ring (52) is fixed to the bottom surface of the ring plate (51). The periphery of the flexible plug ring (52) slides and adheres to the inner wall of the volume cavity (12) to form a seal.

7. The embedded laser gyro inertial navigation device of claim 1, wherein: The installation shell (1) is fixed with water inlet (16) and water outlet (17) which communicate with the cavity (12), the push rod (6) upper end is fixed with the pressure ring (7).

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