CN213147858U - Hexahedron low-angle posture adjustment mechanism of optics - Google Patents
Hexahedron low-angle posture adjustment mechanism of optics Download PDFInfo
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- CN213147858U CN213147858U CN202021786679.9U CN202021786679U CN213147858U CN 213147858 U CN213147858 U CN 213147858U CN 202021786679 U CN202021786679 U CN 202021786679U CN 213147858 U CN213147858 U CN 213147858U
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Abstract
The utility model relates to an optical hexahedron small-angle posture adjusting mechanism, which is characterized in that; the horizontal posture adjusting component comprises a horizontal adjusting bracket, four horizontal adjusting screws and horizontal fastening screws; the azimuth posture adjusting assembly comprises an azimuth adjusting bracket, four azimuth set screws and two azimuth adjusting screws; the direction adjusting bracket is arranged above the supporting frame; the four azimuth fastening threaded holes on the azimuth adjusting bracket are aligned with the four azimuth fastening screw penetrating holes on the supporting frame and are provided with azimuth fastening screws; the two-direction adjusting screw is connected with two-direction adjusting threaded holes on the supporting frame; the horizontal adjusting bracket is matched with the azimuth adjusting bracket through a spherical surface; the four horizontal adjusting threaded holes on the horizontal adjusting bracket are aligned with the four horizontal adjusting screw penetrating holes on the azimuth adjusting bracket and are provided with horizontal adjusting screws; the horizontal fastening threaded hole on the horizontal adjusting bracket corresponds to the horizontal fastening screw mounting hole on the azimuth adjusting bracket and is provided with a horizontal fastening threaded hole. The mechanism meets the use of small space.
Description
Technical Field
The utility model belongs to the technical field of inertial navigation, especially, relate to a hexahedron low-angle posture adjustment mechanism of optics.
Background
The optical hexahedron is used as an attitude reference component in the inertial navigation equipment system, and the attitude accuracy of the optical hexahedron directly influences the output accuracy of the inertial navigation equipment. For a vehicle-mounted inertial navigation positioning and orientation system, inertial navigation equipment and a photoelectric theodolite are required to work together to output geographic coordinate values of a measured target, however, the inertial navigation equipment and the photoelectric theodolite cannot be directly connected through a mechanical interface, so that attitude references of the two equipment cannot be directly transmitted, and for the situation, an attitude reference transmission unit, namely a high-precision three-dimensional attitude measurement unit and an optical hexahedron, needs to be added between the two equipment to perform attitude reference transmission. The high-precision three-dimensional attitude measuring unit is fixedly connected with the photoelectric theodolite, so that the adjustment of the attitude of the optical hexahedron is particularly important for the precision output of the whole system.
The traditional posture adjusting mechanism of the optical hexahedron occupies a large space and is not suitable for being used in a limited operation space in a vehicle, and in addition, the traditional posture adjusting mechanism does not have an azimuth reference adjusting function and affects the measurement precision.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome prior art's weak point, provide a structure size and adjustment space are less, can satisfy in the car user demand, and add the hexahedron low-angle posture adjustment mechanism of optics that is equipped with position benchmark adjustment function.
The above object of the present invention is achieved by the following technical solutions:
the utility model provides an optical hexahedron low-angle posture adjustment mechanism which characterized in that: the device comprises a horizontal posture adjusting component, an azimuth posture adjusting component and a supporting frame;
the horizontal posture adjusting assembly comprises a horizontal adjusting bracket, four horizontal adjusting screws and a horizontal fastening screw; the upper end of the horizontal adjusting bracket is a plane end for supporting the optical hexahedron assembly, the lower end of the horizontal adjusting bracket is a convex spherical end, and four horizontal adjusting threaded holes are formed in the periphery of the convex spherical end on the horizontal adjusting bracket according to four corners of a square; a horizontal fastening threaded hole is formed in the middle of the convex spherical end;
the azimuth attitude adjusting assembly comprises an azimuth adjusting bracket, four azimuth set screws and two azimuth adjusting screws; an inner concave spherical surface is arranged in the middle of the upper end of the azimuth adjusting bracket, and the shape of the inner concave spherical surface is matched with that of the outer convex spherical surface; four azimuth tightly-fixing threaded holes are uniformly distributed at the lower end of the azimuth adjusting bracket along the circumferential direction by taking the central shaft of the azimuth adjusting bracket as the center; four horizontal adjusting screw penetrating holes are formed in the direction adjusting support according to four corners of a square, and a horizontal fastening screw penetrating hole is formed in the center of the direction adjusting support;
the upper end of the support frame is provided with a support plane, one side of the support frame is provided with a side plate, and the side plate is provided with two azimuth adjusting threaded holes arranged along the horizontal direction; four direction set screw penetrating holes are uniformly distributed on the support frame along the circumferential direction, and the four direction set screw penetrating holes are arc-shaped long slotted holes;
the azimuth adjusting bracket is arranged on a supporting plane of the supporting frame; the four azimuth fastening threaded holes are vertically aligned with the four azimuth fastening screw penetrating holes one by one, and are respectively provided with an azimuth fastening screw; the two azimuth adjusting threaded holes are respectively connected with one azimuth adjusting screw, and the screw rod ends of the two azimuth adjusting screws are contacted with the corresponding side surface of the azimuth adjusting bracket;
the horizontal adjusting bracket is arranged above the azimuth adjusting bracket, and the horizontal adjusting bracket and the azimuth adjusting bracket are contacted with the outer convex spherical surface through the inner concave spherical surface to form matching; the four horizontal adjusting threaded holes are aligned with the four horizontal adjusting screw through holes one by one up and down and are respectively provided with one horizontal adjusting screw; the horizontal fastening threaded hole corresponds to the horizontal fastening screw penetrating hole up and down and is provided with the horizontal fastening threaded hole.
Further: the contour tolerance of the contact surface of the concave spherical surface and the convex spherical surface is above IT6 level, and the position tolerance of the spherical center is above IT6 level.
Further: the flatness tolerance of the contact surface of the orientation adjusting bracket and the supporting frame is above IT6 level.
The utility model has the advantages of do with positive effect:
the horizontal posture adjusting assembly, the azimuth posture adjusting assembly and the support frame of the optical hexahedron small-angle posture adjusting mechanism are in aligned matched connection in the vertical direction, and compared with the traditional adjusting mechanism, the optical hexahedron small-angle posture adjusting mechanism is smaller in size, smaller in occupied space during working and capable of making up for the characteristic of insufficient space in a vehicle; compared with the traditional adjusting mechanism, the direction can be adjusted along the Z-axis direction, the direction reference adjusting function is added on the integration of the horizontal posture adjusting function, the reference transmission of the system is ensured, and the output precision of the inertial navigation equipment is further ensured. Under the condition of ensuring the transmission precision of the system, the optical hexahedron small-angle posture adjusting mechanism also has the advantages of easiness in processing, convenience in installation and low cost.
Drawings
FIG. 1 is a view showing an installation layout of a hexahedral adjusting mechanism;
fig. 2 is a structural view (half sectional view) of the hexahedral adjusting mechanism.
Detailed Description
The present invention will be described in further detail with reference to the following specific embodiments, which are illustrative only and not limiting, and the scope of the present invention should not be limited thereby.
An optical hexahedron small-angle posture adjusting mechanism 1 is shown in fig. 1-2, and the invention points are as follows: comprises a horizontal posture adjusting component, an azimuth posture adjusting component and a supporting frame 1.6.
The horizontal posture adjusting assembly comprises a horizontal adjusting support 1.1, four horizontal adjusting screws 1.2 and horizontal set screws 1.3. The upper end of the horizontal adjusting bracket is a plane end and is used for supporting the optical hexahedron assembly. The lower end of the horizontal adjusting bracket is an outer convex spherical end. Four horizontal adjusting threaded holes are formed in the periphery of the horizontal adjusting support, which is positioned at the convex spherical end, and the four horizontal adjusting threaded holes are arranged according to four corners of a square. And a horizontal fastening threaded hole is formed in the middle of the convex spherical end.
The azimuth attitude adjustment assembly comprises an azimuth adjustment bracket 1.4, four azimuth set screws 1.5 and two azimuth adjustment screws 1.7. The middle part of the upper end of the azimuth adjusting support is provided with an inner concave spherical surface, and the shape of the inner concave spherical surface is matched with that of the outer convex spherical surface. Four azimuth fastening threaded holes are uniformly distributed at the lower end of the azimuth adjusting bracket along the circumferential direction by taking the central shaft of the azimuth adjusting bracket as the center. Four horizontal adjusting screw penetrating holes are formed on the direction adjusting support according to four corners of a square, and a horizontal fastening screw penetrating hole is formed in the center of the direction adjusting support. The four horizontal adjusting screw penetrating holes and the horizontal fastening screw penetrating holes are all countersunk holes which penetrate through the upper end and the lower end of the azimuth adjusting bracket.
The upper end of the support frame is provided with a support plane, one side of the support frame is provided with a side plate, and two azimuth adjusting threaded holes arranged along the horizontal direction are formed in the side plate. Four direction set screw penetrating holes are uniformly distributed on the support frame along the circumferential direction, and the four direction set screw penetrating holes are arc-shaped long slotted holes. In order to facilitate the installation and adjustment operation of the horizontal set screw and the four horizontal adjusting screws, vertical avoiding through holes are formed in the positions, corresponding to the horizontal set screw penetrating holes and the four horizontal adjusting screw penetrating holes, of the support frame.
The direction adjusting bracket is arranged on the supporting plane of the supporting frame. The four azimuth fastening threaded holes are vertically aligned with the four azimuth fastening screw penetrating holes one by one, and the four azimuth fastening screws are respectively installed. The two direction adjusting threaded holes are respectively connected with one direction adjusting screw, and the screw rod ends of the two direction adjusting screws are contacted with the corresponding side surface of the direction adjusting support. In order to realize the position adjustment, the two position adjusting screws are prevented from loosening, and the outer sides of the side plates on the two position adjusting screws are connected with tightening nuts.
The horizontal adjusting bracket is arranged above the azimuth adjusting bracket, and the horizontal adjusting bracket and the azimuth adjusting bracket are contacted with the outer convex spherical surface through the inner concave spherical surface to form matching; the four horizontal adjusting threaded holes are aligned with the four horizontal adjusting screw penetrating holes one by one up and down, the horizontal adjusting screws are respectively installed, and horizontal adjustment is completed by adjusting the horizontal adjusting screws in the X-axis direction and the Y-axis direction. The horizontal fastening threaded hole corresponds to the horizontal fastening screw penetrating hole up and down and is provided with the horizontal fastening threaded hole.
In the above structure, further: the contour tolerance of the contact surface of the concave spherical surface and the convex spherical surface is above IT6 level, and the position tolerance of the spherical center is above IT6 level.
In the above mechanism, further: the flatness tolerance of the contact surface of the orientation adjusting bracket and the supporting frame is above IT6 level.
The adjusting method of the optical hexahedron small-angle posture adjusting mechanism comprises the following steps:
firstly, the optical hexahedron component 2 and the horizontal adjusting bracket are fastened through screws, and no relative movement between the hexahedron component and the posture adjusting mechanism is ensured.
The azimuth posture of the mechanism is roughly adjusted, the four azimuth fastening screws are loosened, the two azimuth adjusting screws are adjusted, two beams of parallel light emitted by the high-precision three-dimensional posture measuring unit 3 can be reflected into the lens barrel through the optical hexahedron assembly, the output value (or image) of the high-precision three-dimensional posture measuring unit is ensured to be output, and the four azimuth fastening screws are screwed at the moment.
And after the mechanism coarse adjustment procedure is finished, fine adjustment is carried out on the optical hexahedron assembly. When the horizontal posture of the mechanism is finely adjusted, the horizontal set screw is loosened, the horizontal adjusting support moves around the contact spherical surface by adjusting the horizontal adjusting screw in the X-axis direction and the Y-axis direction, so as to adjust the horizontal postures of the X-axis direction and the Y-axis direction of the horizontal adjusting support, further adjusting the horizontal posture of the optical hexahedron assembly, enabling two beams of parallel light emitted by the high-precision three-dimensional posture measuring unit to be reflected to the lens barrel in parallel in the X-axis and Y-axis directions, repeatedly adjusting two horizontal adjusting screws in the X-axis and Y-axis directions according to the output value (or image) of the high-precision three-dimensional posture measuring unit until the output value (or image) of the high-precision three-dimensional posture measuring unit meets the requirement of system precision, at the moment, the horizontal posture of the adjusting mechanism is adjusted, the horizontal set screw is screwed, and the subsequent adjustment or working is ensured, the horizontal adjusting bracket and the azimuth adjusting bracket do not move relatively, so that the stability of the horizontal posture of the mechanism is ensured.
When the azimuth posture of the mechanism is finely adjusted, four azimuth fastening screws are loosened, the azimuth adjusting support rotates around a Z axis in a contact plane by adjusting two azimuth adjusting screws, so that the azimuth posture of the azimuth adjusting support is adjusted, the azimuth posture of the optical hexahedron assembly is further adjusted, two beams of parallel light emitted by the high-precision three-dimensional posture measuring unit are reflected to the lens barrel in parallel in the vertical direction, at the moment, the two azimuth adjusting screws are repeatedly adjusted according to the output value (or image) of the high-precision three-dimensional posture measuring unit until the output value (or image) of the high-precision three-dimensional posture measuring unit meets the system precision requirement, at the moment, the adjustment of the azimuth posture of the mechanism is finished, the azimuth fastening screws are screwed, the fact that the azimuth adjusting support and the support do not move relatively when subsequent adjustment or work is carried out is guaranteed, and the stability of.
And after finishing the azimuth fine adjustment of the optical hexahedron assembly, checking the output value (or image) of the high-precision three-dimensional attitude measurement unit, finishing an attitude adjustment task by the hexahedron adjustment mechanism assembly if the horizontal attitude and the azimuth attitude output meet the precision requirement of the system, and repeating the steps if the attitude slightly changes until the output meets the precision requirement of the system.
The optical hexahedron small-angle posture adjusting mechanism can realize the adjustment of a horizontal adjusting angle of +/-2 degrees and an azimuth adjusting angle of +/-2 degrees.
Although the embodiments and figures of the present invention have been disclosed for illustrative purposes, those skilled in the art will appreciate that: various substitutions, changes and modifications are possible without departing from the spirit and scope of the invention and the appended claims, and therefore, the scope of the invention is not limited to the disclosure of the embodiments and drawings.
Claims (3)
1. The utility model provides an optical hexahedron low-angle posture adjustment mechanism which characterized in that: the device comprises a horizontal posture adjusting component, an azimuth posture adjusting component and a supporting frame;
the horizontal posture adjusting assembly comprises a horizontal adjusting bracket, four horizontal adjusting screws and a horizontal fastening screw; the upper end of the horizontal adjusting bracket is a plane end for supporting the optical hexahedron assembly, the lower end of the horizontal adjusting bracket is a convex spherical end, and four horizontal adjusting threaded holes are formed in the periphery of the convex spherical end on the horizontal adjusting bracket according to four corners of a square; a horizontal fastening threaded hole is formed in the middle of the convex spherical end;
the azimuth attitude adjusting assembly comprises an azimuth adjusting bracket, four azimuth set screws and two azimuth adjusting screws; an inner concave spherical surface is arranged in the middle of the upper end of the azimuth adjusting bracket, and the shape of the inner concave spherical surface is matched with that of the outer convex spherical surface; four azimuth tightly-fixing threaded holes are uniformly distributed at the lower end of the azimuth adjusting bracket along the circumferential direction by taking the central shaft of the azimuth adjusting bracket as the center; four horizontal adjusting screw penetrating holes are formed in the direction adjusting support according to four corners of a square, and a horizontal fastening screw penetrating hole is formed in the center of the direction adjusting support;
the upper end of the support frame is provided with a support plane, one side of the support frame is provided with a side plate, and the side plate is provided with two azimuth adjusting threaded holes arranged along the horizontal direction; four direction set screw penetrating holes are uniformly distributed on the support frame along the circumferential direction, and the four direction set screw penetrating holes are arc-shaped long slotted holes;
the azimuth adjusting bracket is arranged on a supporting plane of the supporting frame; the four azimuth fastening threaded holes are vertically aligned with the four azimuth fastening screw penetrating holes one by one, and are respectively provided with an azimuth fastening screw; the two azimuth adjusting threaded holes are respectively connected with one azimuth adjusting screw, and the screw rod ends of the two azimuth adjusting screws are contacted with the corresponding side surface of the azimuth adjusting bracket;
the horizontal adjusting bracket is arranged above the azimuth adjusting bracket, and the horizontal adjusting bracket and the azimuth adjusting bracket are contacted with the outer convex spherical surface through the inner concave spherical surface to form matching; the four horizontal adjusting threaded holes are aligned with the four horizontal adjusting screw through holes one by one up and down and are respectively provided with one horizontal adjusting screw; the horizontal fastening threaded hole corresponds to the horizontal fastening screw penetrating hole up and down and is provided with the horizontal fastening threaded hole.
2. The mechanism of claim 1, wherein: the contour tolerance of the contact surface of the concave spherical surface and the convex spherical surface is above IT6 level, and the position tolerance of the spherical center is above IT6 level.
3. The mechanism of claim 1, wherein: the flatness tolerance of the contact surface of the orientation adjusting bracket and the bottom supporting frame is above IT6 level.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021786679.9U CN213147858U (en) | 2020-08-25 | 2020-08-25 | Hexahedron low-angle posture adjustment mechanism of optics |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021786679.9U CN213147858U (en) | 2020-08-25 | 2020-08-25 | Hexahedron low-angle posture adjustment mechanism of optics |
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| Publication Number | Publication Date |
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| CN213147858U true CN213147858U (en) | 2021-05-07 |
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| CN202021786679.9U Active CN213147858U (en) | 2020-08-25 | 2020-08-25 | Hexahedron low-angle posture adjustment mechanism of optics |
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