CN219161321U

CN219161321U - Indexing mechanism inner frame for mounting inertial instrument desk assembly

Info

Publication number: CN219161321U
Application number: CN202220901771.8U
Authority: CN
Inventors: 黄金威; 梁利嘉
Original assignee: Sichuan Hanghao Technology Co ltd
Current assignee: Sichuan Hanghao Technology Co ltd
Priority date: 2022-04-19
Filing date: 2022-04-19
Publication date: 2023-06-09
Anticipated expiration: 2032-04-19

Abstract

The utility model relates to an indexing mechanism inner frame for mounting an inertial instrument desk assembly. The utility model comprises an inner frame and four transition brackets, wherein the transition brackets are symmetrically arranged at the inner sides of the left side and the right side of the inner frame and are close to four corners of the inner frame. The utility model realizes 'oblique\straight' consideration, is beneficial to shortening the research and development period and reducing the research and development cost.

Description

Indexing mechanism inner frame for mounting inertial instrument desk assembly

Technical Field

The utility model relates to the field of inertial navigation, in particular to an indexing mechanism inner frame for installing an inertial instrument desk body assembly, which is used for a three-self inertial unit double-shaft indexing mechanism.

Background

An Inertial Navigation System (INS), hereinafter referred to as inertial navigation, is an autonomous navigation system that does not depend on external information and does not radiate energy to the outside. The automation degree of the inertial navigation product is required to be higher and higher, and meanwhile, the inertial measurement unit in the inertial navigation product realizes three self-functions, namely self-alignment, self-calibration and self-diagnosis, which are the current trend of inertial measurement unit development. The inertial measurement unit product realizes the functions of self-alignment and self-calibration, and a table body assembly provided with an inertial measurement unit is required to be arranged on a double-shaft indexing mechanism, the double-shaft indexing mechanism rotates to a preset angle position at a certain angle rate according to a control program, and various parameters (self-calibration) of the inertial measurement unit and an included angle (self-alignment) of the current position posture of the inertial measurement unit relative to true north are obtained according to a certain error model and algorithm.

There are two ways of self-alignment (hereinafter referred to as north seeking) by rotating the gyro sensitive axis about a vertical axis, namely "rotational modulation" and "rate-shift". The common point of the two inertial measurement units is that a table body assembly with an inertial instrument is required to be installed on a double-shaft indexing mechanism, and the difference is that the rotation modulation north-seeking gyro sensitive axes are orthogonal, wherein the two gyro sensitive axes are horizontal, the other gyro sensitive axis is vertical, namely the inertial measurement unit is installed in a straight manner, and the inertial measurement unit is generally called as a straight table body assembly after being assembled on the table body to form a sensitive assembly; the sensitive axis of the north-seeking gyroscope with the rate offset frequency is also orthogonal, but the sensitive axis and the horizontal plane form an included angle, namely the inertial instrument is arranged in an inclined way, and the inertial instrument is assembled on a platform body to form a sensitive assembly and then is generally called as an inclined platform body assembly.

In order to shorten the development period and reduce the development cost, it is desirable that the two kinds of table body assemblies can be compatible to one kind of conversion mechanism, and simultaneously, the replacement and the maintenance are convenient. The assembly of the table body is assembled on the inner frame of the double-shaft indexing mechanism, so that how to design the inner frame and give consideration to two table bodies of oblique/straight is important, and the inner frame is not found at present.

Disclosure of Invention

The utility model provides an inner frame for a double-shaft indexing mechanism and for mounting an inclined/straight table body component, which aims to solve the technical problems in the background art.

The technical scheme of the utility model is as follows: the utility model relates to an inner frame of an indexing mechanism for installing an inertial instrument desk body assembly, which is characterized in that: the inner frame comprises an inner frame and four transition brackets, wherein the transition brackets are symmetrically arranged on the inner sides of the left side and the right side of the inner frame and are close to four corners of the inner frame.

Further, the transition support is movably connected with the inner frame.

Further, the left side and the right side of the inner frame are respectively provided with a mounting surface and a mounting via hole for mounting a transition bracket, and the transition bracket is correspondingly provided with a positioning surface and a threaded hole which are fixedly connected with the mounting surface of the inner frame.

Further, the inner sides of the two ends of the transition support are respectively provided with a straight table body assembly installation positioning surface, and straight table body assembly installation through holes are formed in the straight table body assembly installation positioning surfaces.

Further, the two sides of the bottom of the inner frame are respectively provided with an inclined platform assembly installation positioning surface, the two sides of the top of the inner frame are respectively provided with inclined platform assembly installation through holes, and the inclined platform assembly installation positioning surfaces and the inclined platform assembly installation through holes are symmetrically arranged left and right by taking the inner frame shaft as the center.

Further, a T-shaped damper mounting surface is arranged on the inclined table body assembly mounting through hole.

Further, weight reducing through holes are respectively arranged on the left side surface and the right side surface of the inner frame.

Further, an inner frame locating hole is formed in the center of the top of the inner frame, an inner frame locating surface is arranged on the outer side of the inner frame locating hole in a surrounding mode, and an inner frame mounting hole is formed in the inner frame locating surface.

Further, the inner frame mounting holes are a plurality of and are evenly distributed on the inner frame positioning surface in a surrounding mode.

Further, an outer frame assembly is arranged on the outer side of the inner frame.

According to the utility model, the inner frame is mounted on the inner frame shaft of the double-shaft indexing mechanism through the mounting interface on the inner frame of the double-shaft indexing mechanism, when the straight table body assembly is mounted, four transition brackets are symmetrically mounted, and the straight table body assembly is assembled on the double-shaft indexing mechanism, so that 'rotation modulation' north seeking in the background technology is realized; when the oblique table body assembly is installed, the oblique table body assembly is directly installed on the oblique table body installation interfaces symmetrically arranged on the inner frame through the shock absorber without installing a transition support, and the north seeking of 'speed offset frequency' in the background technology is realized. The 'oblique\straight' combination is realized, which is beneficial to shortening the research and development period and reducing the research and development cost.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic view of the mounting straight stage assembly of the present utility model;

FIG. 3 is a schematic view of the mounting ramp assembly of the present utility model;

fig. 4 is a schematic view of the installation of the present utility model.

The reference numerals are as follows:

1. an inner frame; 2. an outer frame assembly; 3. an inner frame; 4. a transition support; 5. a straight table assembly; 6. a ramp assembly; 7. a T-shaped damper; 8. a diamond-shaped damper; 9. an inner frame positioning hole; 10. an inner frame mounting hole; 11. an inner frame positioning surface; 12. the straight platform assembly is provided with a through hole; 13. the straight table body component is provided with a positioning surface; 14. the inclined table body component is provided with a positioning surface; 15. the inclined table body component is provided with a through hole; 16. a T-shaped shock absorber mounting surface; 17. and reducing the weight of the via hole.

Detailed Description

The general aspects of the utility model will be described in further detail below with reference to the attached drawings and to specific examples:

referring to fig. 1, the structure of the concrete embodiment of the utility model comprises an inner frame 3 and a transition support 4, wherein the inner frame 3 and the transition support 4 are made of light metal materials with higher specific strength and higher specific rigidity, the transition support 4 is symmetrically arranged at the four corners of the inner frame 3 and is arranged on the inner frame 3 to form the inner frame, the transition support 4 is movably connected with the inner frame 3, specifically, the left side and the right side of the inner frame 3 are respectively provided with a mounting surface and a mounting via hole for mounting the transition support 4, and the transition support 4 is correspondingly provided with a positioning surface and a threaded hole which are fixedly connected with the mounting surface of the inner frame, and when in connection, the transition support 4 passes through the mounting via hole through bolts to be connected with the threaded hole. The inner sides of the two ends of the transition support 4 are respectively provided with a straight platform assembly installation positioning surface 13, straight platform assembly installation through holes 12 are arranged in the straight platform assembly installation positioning surface 13, inclined platform assembly installation positioning surfaces 14 are respectively arranged on the two sides of the bottom of the inner frame 3, inclined platform assembly installation through holes 15 are respectively arranged on the two sides of the top of the inner frame 3, and the inclined platform assembly installation positioning surfaces 14 and the inclined platform assembly installation through holes 15 are symmetrically arranged left and right by taking an inner frame shaft as a center. The ramp assembly mounting via 15 is also provided with a T-shaped damper mounting surface 16. The design of the mounting via 15 and T-shaped damper mounting face 16 differs depending on whether the mounted ramp assembly requires a damper. And if necessary, and if not, the method is not needed. Weight-reducing through holes 17 are respectively arranged on the left side surface and the right side surface of the inner frame 3. The top and bottom centers of the inner frame 3 are respectively provided with an inner frame positioning hole 9, an inner frame positioning surface 11 is arranged on the outer side of the inner frame positioning hole 9 in a surrounding mode, an inner frame installation hole 10 is formed in the inner frame positioning surface 11, a plurality of inner frame installation holes 10 are distributed on the inner frame positioning surface 11 in a surrounding mode in a uniformly distributed mode, and the inner frame and the outer frame assembly are connected and assembled through the upper inner frame positioning hole 9 and the lower inner frame positioning hole 9.

Referring to fig. 2, when the straight table body assembly 5 needs to be installed, the straight table body assembly 5 can be installed on the straight table body installation positioning surface 13 through the straight table body installation via hole 12 arranged on the transition support 4, and the straight table body assembly 5 can be directly fixedly connected to the transition support 4 or can be connected with the transition support 4 through the diamond-shaped damper 8.

Referring to fig. 3, when the ramp assembly 6 needs to be installed, the ramp assembly 6 may be installed on the ramp installation positioning surface 14 through the ramp installation via hole 15 provided on the inner frame 3, the ramp installation via hole 15 and the ramp installation positioning surface 14 are symmetrically arranged at the upper and lower end surfaces of the inner frame near four corners, the ramp assembly 6 may be directly fixedly connected to the inner frame 3, or may be connected to the inner frame 3 through the T-shaped damper 7, and when connected through the T-shaped damper 7, the T-shaped damper 7 is installed on the ramp installation via hole 15, the ramp installation positioning surface 14 and the T-shaped damper installation surface 16 arranged on the inner frame 3.

Referring to fig. 4, the inner frame 1 is mounted in the outer frame assembly 2 through inner frame positioning holes 9, inner frame mounting holes 10 and inner frame positioning surfaces 11 at both ends of the inner frame shaft.

The inner frame 1 is mounted on the biaxial indexing mechanism, but the design method and concept are equally applicable to the uniaxial indexing mechanism.

The transition support 4 and the inner frame 3 can be integrally designed and machined on the premise that space allows and interference does not occur after the ramp body assembly 6 is installed.

The technical matters not specifically described in the foregoing embodiments are the same as those in the prior art.

The above is only a specific embodiment disclosed in the present utility model, but the scope of the present utility model is not limited thereto, and the scope of the present utility model should be defined by the claims.

Claims

1. An indexing mechanism inner frame for installing an inertial instrument desk assembly, which is characterized in that: the inner frame comprises an inner frame and four transition brackets, wherein the transition brackets are symmetrically arranged on the inner sides of the left side and the right side of the inner frame and are close to four corners of the inner frame.

2. The inertial instrument desk assembly mounted indexing mechanism inner frame of claim 1, wherein: the transition support is movably connected with the inner frame.

3. The inertial instrumentation console assembly of claim 2, wherein: the left side and the right side of the inner frame are respectively provided with a mounting surface and a mounting via hole for mounting a transition bracket, and the transition bracket is correspondingly provided with a positioning surface and a threaded hole which are fixedly connected with the mounting surface of the inner frame.

4. An indexing mechanism inner frame for mounting an inertial instrument desk assembly according to claim 3, wherein: the inner sides of the two ends of the transition support are respectively provided with a straight table body assembly installation positioning surface, and straight table body assembly installation through holes are formed in the straight table body assembly installation positioning surfaces.

5. An indexing mechanism inner frame for mounting an inertial meter table assembly according to any one of claims 2 to 4, wherein: the two sides of the bottom of the inner frame are respectively provided with an inclined platform assembly installation positioning surface, the two sides of the top of the inner frame are respectively provided with inclined platform assembly installation through holes, and the inclined platform assembly installation positioning surfaces and the inclined platform assembly installation through holes are symmetrically arranged left and right by taking the inner frame shaft as the center.

6. The inertial instrument desk assembly mounted indexing mechanism inner frame of claim 5, wherein: and a T-shaped shock absorber mounting surface is arranged on the inclined table body assembly mounting through hole.

7. The inertial instrument desk assembly mounted indexing mechanism inner frame of claim 5, wherein: weight-reducing through holes are respectively formed in the left side surface and the right side surface of the inner frame.

8. The inertial instrumentation console assembly of claim 7, wherein: the top and bottom centers of the inner frame are respectively provided with an inner frame positioning hole, the outer side of the inner frame positioning hole is provided with an inner frame positioning surface in a surrounding mode, and the inner frame positioning surface is provided with an inner frame mounting hole.

9. The inertial instrumentation console assembly of claim 8, wherein: the inner frame mounting holes are multiple and are uniformly distributed on the inner frame positioning surface in a surrounding mode.

10. The inertial instrumentation console assembly of claim 9, wherein: and an outer frame assembly is arranged on the outer side of the inner frame.