An indexing mechanism of a fiber optic gyro north finder

Abstract

The invention discloses a translocation mechanism of a fiber-optic gyroscope north seeker. The mechanism comprises: a fluted disc seat fixedly connected with the rotating platform of the north seeker; a power driving assembly used for providing driving force for the reciprocating rotation of the fluted disc seat in four measure positions; a calibration assembly having a power connection with the power driving assembly and used for realizing the rotary calibration of the fluted disc seat in the circumference under the action of the provided driving force; and a positioning assembly used for positioning the translocation mechanism after the rotation of the translocation mechanism to any one of the four measure positions. The power driving assembly drives the fluted disc seat to drive the rotating platform to rotate, and the translocation mechanism is positioned through the positioning assembly after utilizing the calibration assembly to calibrate to rotate the translocation mechanism to the measure position, so the rotation of the rotating platform and the positioning and locking when the translocation mechanism rotates to each measure position are realized. In the invention, the four-position translocation, positioning and locking of the translocation mechanism are realized in a rocking arm hand-operated input mode, and the translocation mechanism has a large load bearing capability, a high positioning precision and a high revolution precision.

Description

technical field

[0001] The invention belongs to the field of an optical fiber gyro north finder, and in particular relates to an indexing mechanism of an optical fiber gyroscope north finder. Background technique

[0002] The fiber optic gyro north finder is a commonly used inertial navigation instrument at present. It uses the fiber optic gyro to sense the angular velocity component of the earth's rotation, and calculates the angle between the angular velocity reference axis and the true north direction to realize north finding. The indexing mechanism is an important part of the fiber optic gyro north finder. It is used to realize the indexing control of the fiber optic gyroscope, and its precision must meet the accuracy of the fiber optic gyroscope north finder.

[0003] The current fiber optic gyro north finder based on four positions performs a north finding operation at four positions of 0°, 90°, 180°, and 270° on a circle on the horizontal plane, and finally calculates...

Examples

Embodiment Construction

[0027] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings. The description herein is only used to explain the present invention when referring to specific examples, and does not limit the present invention.

[0028] Such as figure 1 As shown, the mechanism of the present invention includes a driving assembly, an indexing assembly, a positioning assembly, and may also include a limit locking assembly.

[0029] Such as figure 1 , the power drive assembly includes a driving gear 18 meshing with a driven gear 16, a driven bevel gear 19 coaxially fixed with the driving gear 18 and a driving bevel gear 20 meshing with the driven bevel gear 19, the driving bevel gear 20 is coaxially connected with the rocker arm 21. By driving the rocker arm 21 to rotate, the driving bevel gear 20 is driven to drive the driven bevel gear 19 to r...

technical field

[0001] The invention belongs to the field of an optical fiber gyro north finder, and in particular relates to an indexing mechanism of an optical fiber gyroscope north finder. Background technique

[0002] The fiber optic gyro north finder is a commonly used inertial navigation instrument at present. It uses the fiber optic gyro to sense the angular velocity component of the earth's rotation, and calculates the angle between the angular velocity reference axis and the true north direction to realize north finding. The indexing mechanism is an important part of the fiber optic gyro north finder. It is used to realize the indexing control of the fiber optic gyroscope, and its precision must meet the accuracy of the fiber optic gyroscope north finder.

[0003] The current fiber optic gyro north finder based on four positions performs a north finding operation at four positions of 0°, 90°, 180°, and 270° on a circle on the horizontal plane, and finally calculates...

Examples

Embodiment Construction

[0027] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings. The description herein is only used to explain the present invention when referring to specific examples, and does not limit the present invention.

[0028] Such as figure 1 As shown, the mechanism of the present invention includes a driving assembly, an indexing assembly, a positioning assembly, and may also include a limit locking assembly.

[0029] Such as figure 1 , the power drive assembly includes a driving gear 18 meshing with a driven gear 16, a driven bevel gear 19 coaxially fixed with the driving gear 18 and a driving bevel gear 20 meshing with the driven bevel gear 19, the driving bevel gear 20 is coaxially connected with the rocker arm 21. By driving the rocker arm 21 to rotate, the driving bevel gear 20 is driven to drive the driven bevel gear 19 to r...

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