Three-axis optical fiber gyroscope

Abstract

The three-axis optical fiber gyroscope comprises a base, an outer cover is arranged on the base; the base is connected with the outer cover through a plurality of fastening bolts; a mounting frame is arranged in the outer cover on the base through bolt connection; mounting plates are arranged on two adjacent side surfaces and the top of the mounting frame; every two adjacent mounting plates are vertically arranged; a ring sleeve is arranged on the mounting plate; an optical fiber ring is arranged in the ring sleeve; a modulation circuit board is arranged on one side of the mounting rack; a light source driving plate is arranged in the mounting frame; the base is provided with a sealing strip on the inner side of the outer cover; the outer cover is provided with a pressing strip opposite to the sealing strip; a plurality of rotating parts are rotationally arranged on the sealing strip; one side of the rotating piece extends upwards to be provided with a pressing piece. A pressing rod is connected between the ends, away from the pressing piece, of the multiple rotating pieces. The pressing rod is provided with an arc-shaped soft rubber strip relative to the connecting position of the sealing strip and the pressing strip.

Description

Technical Field

[0001] The utility model belongs to the field of fiber optic gyroscopes, and in particular relates to a three-axis fiber optic gyroscope. Background Art

[0002] The three-axis fiber optic gyroscope is a sensitive element based on an optical fiber coil. It can simultaneously measure angular velocity or angular displacement in three axes. It has the characteristics of full solid state, simple structure, high precision, etc. It has a wide range of applications. The three-axis fiber optic gyroscope is very sensitive to the environment and external interference due to its internal core components such as the optical fiber ring. In order to prevent tiny dust or pollutants in the air from affecting its internal electrical components, and the fiber optic gyroscope makes the temperature and humidity of the working environment relatively stable, the gyroscope is usually completely sealed with an outer cover, and then the outer cover and the mounting base are completely sealed with hard potting glue. However, the hard potting glue used has weak resistance to cold and heat changes and is prone to cracks in an environment with large temperature fluctuations. When the gyroscope needs to be repaired, the hard potting glue is difficult to remove, and may cause damage to electronic components during disassembly. Utility Model Content

[0003] The utility model aims to provide a three-axis fiber optic gyroscope to solve the technical problem that in order to prevent tiny dust or pollutants in the air from affecting the electrical components in the fiber optic gyroscope and the fiber optic gyroscope makes the temperature and humidity of the working environment relatively stable, the gyroscope is usually completely sealed with an outer cover, and then the outer cover and the mounting base are completely sealed with a hard potting glue. However, the hard potting glue used has weak resistance to cold and heat changes and is prone to cracks in an environment with large temperature fluctuations. In addition, when the gyroscope needs to be repaired, the hard potting glue is difficult to remove, and the electronic components may be damaged during disassembly.

[0004] To achieve the above objectives, the specific technical solution of the three-axis fiber optic gyroscope of the present invention is as follows:

[0005] A three-axis fiber optic gyroscope comprises a base; an outer cover is provided on the base; the base and the outer cover are connected by multiple fastening bolts; a mounting frame is provided on the base and connected inside the outer cover by bolts; mounting plates are provided on two adjacent sides and the top of the mounting frame; the two adjacent mounting plates are vertically arranged; a ring sleeve is provided on the mounting plate; an optical fiber ring is provided in the ring sleeve; a modulation circuit board is provided on one side of the mounting frame; a light source driving board is provided in the mounting frame; a sealing strip is provided on the base on the inner side of the outer cover; a pressure strip is provided on the outer cover at a position opposite to the sealing strip; a plurality of rotating parts are rotatably provided on the sealing strip; a pressure plate is provided on one side of the rotating part and extends upward; a pressure rod is connected between one end of the plurality of rotating parts away from the pressure plate; an arc-shaped soft rubber strip is provided at the position where the pressure rod meets the pressure strip relative to the sealing strip.

[0006] Furthermore, the base is provided with a sealing groove on the outside of the sealing strip; and the outer cover is provided with convex strips on both sides relative to the sealing groove.

[0007] Furthermore, a foldable sealing strip is provided in the middle of the sealing groove.

[0008] The utility model discloses a three-axis fiber optic gyroscope with the following advantages: a sealing strip is arranged on the inner side of the outer cover through the base, and a pressure strip is arranged on the outer cover relative to the sealing strip, and the sealing strip and the pressure strip are relatively engaged to form a more sealed space in the outer cover. When the outer cover is set on the base, the outer cover is pressed down, the pressure strip is attached to the sealing strip, and the pressing piece is pressed down to drive the rotating part to rotate. The rotating part pushes the pressure rod to attach the arc-shaped soft rubber strip to the gap between the pressure strip and the sealing strip, thereby increasing the sealing of the space in the outer cover, ensuring that the three-axis fiber optic gyroscope is completely isolated from the external environment, preventing tiny dust or pollutants in the air from entering the space in the outer cover and affecting the electrical components therein, and can keep the temperature and humidity of the working environment of the electrical components in the outer cover stable, thereby ensuring the accuracy of the measurement results of the three-axis fiber optic gyroscope; a sealing groove and a folded sealing strip are arranged on the outer side of the sealing strip through the base, and the outer cover is opposite to both sides of the sealing groove The outer cover is fixed to the base with a plurality of fastening bolts, and the installation effect is firm and the sealing effect of the soft rubber strip and the folded sealing strip are effectively maintained. When the three-axis fiber optic gyroscope needs to be repaired, it can be easily disassembled. Compared with the commonly used hard potting glue sealing method, it will not affect the repair operation, and the outer cover can be reinstalled after repair. It is convenient to operate and saves manpower and material resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0010] Figure 2 This is a schematic diagram of the internal structure of the utility model;

[0011] Figure 3 It is a schematic diagram of the cross-sectional structure of the utility model;

[0012] Figure 4 For this utility model Figure 3 A magnified schematic diagram of area A in the middle;

[0013] Explanation of the marks in the figure: 1. Base; 2. Outer cover; 3. Fastening bolts; 4. Mounting bracket; 5. Mounting plate; 6. Ring sleeve; 7. Fiber optic ring; 8. Modulation circuit board; 9. Light source driving board; 10. Sealing strip; 11. Pressure strip; 12. Rotating part; 13. Pressing piece; 14. Pressure rod; 15. Soft rubber strip; 16. Sealing groove; 17. Raised strip; 18. Folding sealing strip. DETAILED DESCRIPTION

[0014] In order to better understand the purpose, structure and function of the present invention, the following is a further detailed description of a three-axis fiber optic gyroscope of the present invention in conjunction with the accompanying drawings.

[0015] like Figure 1-4 As shown, the utility model is a three-axis fiber optic gyroscope, comprising a base 1; an outer cover 2 is provided on the base 1; the base 1 and the outer cover 2 are connected by multiple fastening bolts 3; a mounting bracket 4 is provided on the base 1 inside the outer cover 2 by bolt connection; mounting plates 5 are provided on two adjacent sides and the top of the mounting bracket 4; the two adjacent mounting plates 5 are vertically arranged; a ring sleeve 6 is provided on the mounting plate 5; an optical fiber ring 7 is provided in the ring sleeve 6; a modulation circuit board 8 is provided on one side of the mounting bracket 4; a light source driving board 9 is provided in the mounting bracket 4; a sealing strip 10 is provided on the base 1 on the inner side of the outer cover 2; a pressure strip 11 is provided on the outer cover 2 at a position opposite to the sealing strip 10; a plurality of rotating parts 12 are rotatably provided on the sealing strip 10; a pressing piece 13 is provided on one side of the rotating part 12 and extends upward; a pressure rod 14 is connected between the ends of the multiple rotating parts 12 away from the pressing piece 13; an arc-shaped soft rubber strip 15 is provided at the position where the pressure rod 14 meets the sealing strip 10 and the pressure strip 11.

[0016] Combine Figure 1-4 As shown, three optical fiber rings 7 are set by the mounting plates 5 and ring sleeves 6 arranged vertically adjacent to each other on the mounting frame 4, and are combined with the modulation circuit board 8 and the light source driving board 9 to form a three-axis optical fiber gyroscope. The three-axis optical fiber gyroscope can be installed on a variety of different operating equipment through the base 1 to measure the speed or angular displacement. During the installation of the three-axis optical fiber gyroscope, the outer cover 2 is pressed down onto the base 1 and then fixed with multiple fastening bolts 3. The sealing strip 10 provided on the base 1 is relatively engaged with the pressure strip 11 provided on the outer cover 2 to form a more sealed space in the outer cover 2. During the installation of the outer cover 2, the outer cover 2 is The cover 2 is pressed down, the pressure strip 11 is attached to the sealing strip 10, and the pressing piece 13 is pressed down, which drives the rotating part 12 to rotate. The rotating part 12 pushes the pressure rod 14 to attach the arc-shaped soft rubber strip 15 to the gap between the pressure strip 11 and the sealing strip 10, thereby increasing the sealing performance of the space inside the outer cover 2, ensuring that the three-axis fiber optic gyroscope is completely isolated from the external environment, preventing tiny dust or pollutants in the air from entering the space inside the outer cover 2 and affecting the electrical components therein, and can keep the temperature and humidity of the working environment of the electrical components in the outer cover 2 stable, thereby ensuring the accuracy of the measurement results of the three-axis fiber optic gyroscope.

[0017] The base 1 is provided with a sealing groove 16 on the outside of the sealing strip 10; the outer cover 2 is provided with convex strips 17 on both sides of the sealing groove 16, and a folded sealing strip 18 is provided in the middle of the sealing groove 16. When the outer cover 2 is pressed down and set on the base 1, the convex strip 17 is pressed down into the sealing groove 16. At the same time, the inner sides of the two convex strips 17 of the outer cover 2 engage with the folded sealing strip 18, and press down and compress the folded sealing strip 18 to form a sealing ring, filling the tiny gap between the outer cover 2 and the base 1, forming a second layer of sealing protection, and cooperating with the soft rubber strip 15 to further increase the sealing effect of the space inside the outer cover 2, effectively protecting the cleanliness of the working environment of the three-axis fiber optic gyroscope and the stability of humidity and temperature, thereby increasing the service life of the three-axis fiber optic gyroscope and the accuracy of the measurement results.

[0018] The three-axis fiber optic gyroscope fixes the outer cover 2 to the base 1 through a plurality of fastening bolts 3. The installation effect is firm and the sealing effect of the soft rubber strip 15 and the folded sealing strip 18 is effectively maintained. When the three-axis fiber optic gyroscope needs to be repaired, it can be easily disassembled. Compared with the commonly used hard potting glue sealing method, it will not affect the repair operation. After the repair, the outer cover 2 can be re-connected and installed with the base 1 through the fastening bolts 3 to re-form the sealing protection. The operation is convenient and saves manpower and material resources.

[0019] It is understood that the present invention is described by way of certain embodiments, and those skilled in the art will appreciate that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. Furthermore, under the guidance of the present invention, these features and embodiments may be modified to suit specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are intended to be protected by the present invention.

Claims

1. A three-axis fiber optic gyroscope, characterized in that: The invention comprises a base (1); an outer cover (2) is provided on the base (1); the base (1) and the outer cover (2) are connected by a plurality of fastening bolts (3); a mounting frame (4) is provided on the base (1) and is connected to the inner part of the outer cover (2) by bolts; mounting plates (5) are provided on two adjacent sides and the top of the mounting frame (4); the two adjacent mounting plates (5) are vertically arranged; a ring sleeve (6) is provided on the mounting plate (5); an optical fiber ring (7) is provided in the ring sleeve (6); a modulation circuit board (8) is provided on one side of the mounting frame (4); and a mounting plate (5) is provided in the mounting frame (4). A light source driving plate (9) is provided; a sealing strip (10) is provided on the base (1) on the inner side of the outer cover (2); a pressure strip (11) is provided on the outer cover (2) at a position opposite to the sealing strip (10); a plurality of rotating parts (12) are rotatably provided on the sealing strip (10); a pressing piece (13) is provided on one side of the rotating part (12) extending upward; a pressing rod (14) is connected between one end of the plurality of rotating parts (12) away from the pressing piece (13); an arc-shaped soft rubber strip (15) is provided on the pressure rod (14) at a position where the sealing strip (10) and the pressure strip (11) meet.

2. A three-axis fiber optic gyroscope according to claim 1, characterized in that: The base (1) is provided with a sealing groove (16) on the outside of the sealing strip (10); and the outer cover (2) is provided with convex strips (17) at positions on both sides relative to the sealing groove (16).

3. A three-axis fiber optic gyroscope according to claim 2, characterized in that: A folded sealing strip (18) is provided in the middle of the sealing groove (16).

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