Large aperture telescope parallel tracking mount

Abstract

The application provides a large-aperture telescope parallel tracking frame and particularly relates to the technical field of optical elements, which comprises an optical mechanism, a branch chain structure and a motor structure, wherein the branch chain structure comprises a first branch chain, a second branch chain and a rotating pair, the rotating pair comprises a first rotating pair, a second rotating pair, a third rotating pair, a fourth rotating pair, a fifth rotating pair and a sixth rotating pair, the first branch chain and the second branch chain are each provided with at least three, and the motor structure comprises a first synchronous motor, a second synchronous motor and a third synchronous motor; the first synchronous motor, the second synchronous motor and the third synchronous motor are coaxially arranged from top to bottom in sequence, and sequentially drive each first branch chain, each second branch chain to move and cooperate with the rotating pair to change the angle of the optical mechanism, so that the large-aperture telescope parallel tracking frame has the advantages of a large working space, no over-the-top blind area, no singular point in the working space and no error accumulation.

Description

Technical Field

[0001] This invention relates to the field of optical element technology, and in particular to a parallel tracking mount for a large-aperture telescope. Background Technology

[0002] Large-aperture telescopes are important observation instruments for space target detection, early warning detection, and astronomical observation. They are core equipment for improving the ability to detect space targets, and the design of the telescope's tracking frame directly affects the telescope's tracking accuracy.

[0003] Currently, the most widely used tracking frames are dual-axis tracking frames, which include azimuth-elevation tracking frames and XY tracking frames. Dual-axis tracking frames adopt a dual-axis series configuration, which has the advantage of simple structure, but there are tracking blind spots and error accumulation. In order to eliminate the tracking blind spots of dual-axis series tracking frames, a position compensation mechanism is usually added in series to the original tracking frame to increase the tracking frame's additional free area. However, this will increase the overall size, weight and complexity of the entire tracking frame. Parallel tracking frames for large-aperture telescopes have the advantages of high precision and no error accumulation, but these mechanisms have strong motion coupling, small rotation range and relatively complex structure.

[0004] In view of this, the present invention provides a large-aperture telescope parallel tracking mount that has a large space, no tracking blind spots, no error accumulation, and a simple structure. Summary of the Invention

[0005] To address the problems of complex structures, blind spots, and error accumulation in existing tracking frames, this invention proposes a parallel tracking frame for large-aperture telescopes.

[0006] This invention is achieved through the following technical solution:

[0007] This invention proposes a parallel tracking mount for a large-aperture telescope, comprising an optical mechanism, a branch structure, and a motor structure, wherein:

[0008] The branch structure includes a first branch, a second branch, and a rotating pair. The rotating pair includes a first rotating pair, a second rotating pair, a third rotating pair, a fourth rotating pair, a fifth rotating pair, and a sixth rotating pair. Both the first branch and the second branch have at least three of each. The motor structure includes a first synchronous motor, a second synchronous motor, and a third synchronous motor.

[0009] The first synchronous motor, the second synchronous motor, and the third synchronous motor are coaxially arranged from top to bottom. One end of each of the three first branches is distributed at a 120° angle to the outside of the optical mechanism and is connected to the outside of the optical mechanism through the first, second, and third rotating joints, respectively. The other ends of the three first branches are connected to the three second branches through the fourth, fifth, and sixth rotating joints, respectively. The first synchronous motor, the second synchronous motor, and the third synchronous motor are fixedly connected to the other ends of the three second branches.

[0010] The axes of the first revolute joint, the second revolute joint, the third revolute joint, the fourth revolute joint, the fifth revolute joint, the sixth revolute joint, the optical mechanism, and the motor structure intersect at the same point.

[0011] Furthermore, the axes of the rotating pairs at both ends of the first branch are in the same plane.

[0012] Furthermore, the first branch includes a first bend toward the optical mechanism, and the second branch includes a second bend toward the motor structure.

[0013] Furthermore, the base is disposed at the bottom of the third synchronous motor.

[0014] The beneficial effects of this invention are:

[0015] The large-aperture telescope parallel tracking frame proposed in this invention utilizes the first synchronous motor, the second synchronous motor, and the third synchronous motor arranged coaxially from top to bottom, which sequentially drive each first branch and each second branch to move and cooperate with the rotating joint to change the angle of the optical mechanism. It has the advantages of large working space, no blind spot over the top, no singularity in the working space, and no error accumulation. Attached Figure Description

[0016] Figure 1 This is an overall structural diagram of the parallel tracking frame for the large-aperture telescope of the present invention;

[0017] Figure 2 This is a schematic diagram showing the connection between the motor structure and the branch structure of the parallel tracking frame for the large-aperture telescope of the present invention.

[0018] Figure 3 This is a schematic diagram showing the connection between the branch structure and the optical mechanism of the parallel tracking frame for the large-aperture telescope of the present invention.

[0019] In the figure: base 1, first synchronous motor 2, second synchronous motor 3, third synchronous motor 4, first branch 5, second branch 6, optical mechanism 7, first rotating joint 8, second rotating joint 9, third rotating joint 10, fourth rotating joint 11, fifth rotating joint 12, sixth rotating joint 13;

[0020] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0021] To more clearly and completely illustrate the technical solution of the present invention, the present invention will be further described below with reference to the accompanying drawings.

[0022] Please refer to Figures 1-3 This invention proposes a parallel tracking frame for a large-aperture telescope, comprising an optical mechanism 7, a branch structure, and a motor structure, wherein:

[0023] The branch structure includes a first branch 5, a second branch 6, and a rotating pair. The rotating pair includes a first rotating pair 8, a second rotating pair 9, a third rotating pair 10, a fourth rotating pair 11, a fifth rotating pair 12, and a sixth rotating pair 13. The first branch 5 and the second branch 6 are each provided with at least three. The motor structure includes a first synchronous motor 2, a second synchronous motor 3, and a third synchronous motor 4.

[0024] The first synchronous motor 2, the second synchronous motor 3, and the third synchronous motor 4 are coaxially arranged from top to bottom. One end of each of the three first branches 5 is distributed at a 120° angle to the outside of the optical mechanism 7 and is connected to the outside of the optical mechanism 7 through the first rotating joint 8, the second rotating joint 9, and the third rotating joint 10, respectively. The other end of each of the three first branches 5 is connected to the three second branches 6 through the fourth rotating joint 11, the fifth rotating joint 12, and the sixth rotating joint 13, respectively. The first synchronous motor 2, the second synchronous motor 3, and the third synchronous motor 4 are fixedly connected to the other end of each of the three second branches 6.

[0025] The axes of the first rotary joint 8, the second rotary joint 9, the third rotary joint 10, the fourth rotary joint 11, the fifth rotary joint 12, the sixth rotary joint 13, the optical mechanism 7, and the motor structure intersect at the same point.

[0026] In this embodiment:

[0027] The first synchronous motor 2, the second synchronous motor 3, and the third synchronous motor 4 are all external rotor permanent magnet synchronous motors;

[0028] The branch structure is used to connect the motor structure and the optical mechanism 7;

[0029] Rotary joints are used to provide degrees of freedom;

[0030] In a specific embodiment, the first synchronous motor 2, the second synchronous motor 3, and the third synchronous motor 4 are arranged sequentially from top to bottom. The optical mechanism 7 is positioned above the first synchronous motor 2 and at a certain distance from it. The first synchronous motor 2, the second synchronous motor 3, the third synchronous motor 4, and the optical mechanism 7 are on the same axial direction. The three first branches 5 are of the same length and are connected to the outside of the optical mechanism 7 via a revolute joint. Since the three synchronous motors are connected sequentially, the three second branches 6 are of different lengths. The length of the first branch 5 connected to the first synchronous motor 2 is less than the length of the branch 5 connected to the second synchronous motor 3. The length of the branch connected to the third synchronous motor 4 is such that each rotating joint intersects the axis of the synchronous motor and the optical mechanism 7 at the same point. When the tracking frame is tracking, the first synchronous motor 2, the second synchronous motor 3 and the third synchronous motor 4 rotate and drive the first branch 5 and the second branch 6 to move in sequence, so that the optical mechanism 7 can achieve three-dimensional pure rotational motion. The tracking range can reach azimuth 0 to 360 degrees and pitch -45 degrees to +45 degrees. Moreover, the large-aperture telescope parallel tracking frame provided by this invention has advantages over other existing tracking frames, such as large working space, no blind spot over the top, no singularity in the working space and no error accumulation.

[0031] Furthermore, the axes of the rotating pairs at both ends of the first branch 5 are in the same plane.

[0032] In a specific embodiment, the axes of the first rotary joint 8 and the fourth rotary joint 11 are in the same plane, the axes of the second rotary joint 9 and the fifth rotary joint 12 are in the same plane, and the axes of the third rotary joint 10 and the sixth rotary joint 13 are in the same plane.

[0033] Furthermore, the first branch 5 includes a first bend toward the optical mechanism 7, and the second branch 6 includes a second bend toward the motor structure.

[0034] In a specific implementation, both the first branch 5 and the second branch 6 are shaped like ">". The first bend is located near the center of the first branch 5, and the second bend is located on the second branch 6 near the motor structure. The bending angles of the first and second bends and their positions on the first and second branches 5 and 6 can be selected according to actual conditions. By changing the angles of the first and second bends and their positions on the first and second branches 6, the distance between the optical mechanism 7 and the first synchronous motor 2 can be changed to adapt to different scenarios.

[0035] Furthermore, the base 1 is disposed at the bottom of the third synchronous motor 4.

[0036] In this embodiment:

[0037] Base 1 is used to connect and support the third synchronous motor 4;

[0038] In a specific implementation, the base 1 is located at the bottom of the third synchronous motor 4. While bearing the third synchronous motor 4, the base 1 also provides a support and connection structure for the entire large-aperture telescope parallel tracking frame.

[0039] Of course, the present invention may have many other embodiments. Based on this embodiment, other embodiments obtained by those skilled in the art without any creative effort are all within the scope of protection of the present invention.

Claims

1. A parallel tracking mount for a large-aperture telescope, characterized in that, It includes optical mechanisms, branched structures, and motor structures, among which: The branch structure includes a first branch, a second branch, and a rotating pair. The rotating pair includes a first rotating pair, a second rotating pair, a third rotating pair, a fourth rotating pair, a fifth rotating pair, and a sixth rotating pair. Both the first branch and the second branch have at least three of each. The motor structure includes a first synchronous motor, a second synchronous motor, and a third synchronous motor. The first synchronous motor, the second synchronous motor, and the third synchronous motor are coaxially arranged from top to bottom. One end of each of the three first branches is distributed at a 120° angle to the outside of the optical mechanism and is connected to the outside of the optical mechanism through the first, second, and third rotating joints, respectively. The other ends of the three first branches are connected to the three second branches through the fourth, fifth, and sixth rotating joints, respectively. The first synchronous motor, the second synchronous motor, and the third synchronous motor are fixedly connected to the other ends of the three second branches. The axes of the first revolute joint, the second revolute joint, the third revolute joint, the fourth revolute joint, the fifth revolute joint, the sixth revolute joint, the optical mechanism, and the motor structure intersect at the same point.

2. The parallel tracking mount for a large-aperture telescope according to claim 1, characterized in that, The axes of the rotating pairs at both ends of the first branch are in the same plane.

3. The parallel tracking mount for a large-aperture telescope according to claim 1, characterized in that, The first branch includes a first bend toward the optical mechanism, and the second branch includes a second bend toward the motor structure.

4. The parallel tracking mount for a large-aperture telescope according to claim 3, characterized in that, It also includes a base, which is disposed at the bottom of the third synchronous motor.

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