A limiting mechanism for a harmonic equatorial mount

Abstract

The utility model relates to the technical field of equatorial mounts, and discloses a limiting mechanism of a harmonic equatorial mount, including a first harmonic reducer fixed end, a first harmonic reducer output end, a box fixedly connected to the first harmonic reducer fixed end, a lens base connecting tube fixedly connected to the output end of the first harmonic reducer, a lens barrel seat fixedly connected to one side of the lens base connecting tube, a first limit switch fixedly connected to one side of the box, a support seat arranged on one side of the box, and a connecting assembly arranged on one side of the box. The utility model solves the problem that the existing harmonic equatorial mount has no limiting mechanism, generally controls the rotation angle by software, but has no limiting mechanism for the theodolite mode, and the equatorial mount body and some equipment installed on the lens barrel are connected to a computer or a power supply by cables. If they are continuously rotated in the same direction, the cables will be entangled, or the lens barrel will hit the tripod, damaging the equipment.

Description

Technical Field

[0001] The utility model relates to the technical field of equatorial mounts, in particular to a limiting mechanism of a harmonic equatorial mount. Background Art

[0002] In recent years, a new equatorial mount has appeared on the market - the harmonic equatorial mount. This type of equatorial mount has emerged due to the use of a harmonic reducer. The harmonic reducer is mainly composed of a steel wheel, a flexible wheel, a flexible bearing and an input shaft.

[0003] The harmonic equatorial mounts currently on the market do not have a limit mechanism, and the rotation angle is generally controlled by software. However, there is no limit mechanism set for the theodolite mode. The equatorial mount body and some equipment installed on the lens barrel will have cables connected to the computer or power supply. If there is no limit, continuous rotation in the same direction will cause the cables to become entangled, or the lens barrel will hit the tripod, damaging the equipment.

[0004] Therefore, we proposed a limiting mechanism of the harmonic equatorial mount to solve the problem. Utility Model Content

[0005] The purpose of the utility model is to provide a limiting mechanism for a harmonic equatorial mount, which solves the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned object, the utility model provides the following technical solutions: a limiting mechanism of a harmonic equatorial mount, comprising a first harmonic reducer fixed end and a first harmonic reducer output end;

[0007] A box fixedly connected to the output end of the fixed end of the first harmonic reducer;

[0008] A mirror base connecting tube fixedly connected to the output end of the first harmonic reducer;

[0009] A lens tube seat fixedly connected to one side of the lens base connecting tube;

[0010] A first limit switch fixedly connected to one side of the box;

[0011] A support seat is arranged on one side of the box body;

[0012] And a connecting component arranged on one side of the box body, the connecting component includes a first limiting portion arranged on one side of the box body, and a second limiting portion is arranged on one side of the box body.

[0013] Preferably, the first limit portion includes a second limit switch fixedly connected to one side of the box body, a second limit switch handle is arranged inside the second limit switch, the support seat is fixedly connected to the second harmonic reducer output end through a mechanical structure, the box body is fixedly connected to the second harmonic reducer fixed end through a screw, the second harmonic reducer fixed end is threadedly connected to a tightening screw, the second harmonic reducer fixed end is fixedly connected to a pressure ring through the tightening screw, the pressure ring is provided with an external thread, the pressure ring is threadedly connected to the limit ring, and the upper part of the pressure ring is respectively provided with A pressure ring limit screw 1, a pressure ring limit screw 2, and a pressure ring threaded hole. The upper part of the limit ring is respectively provided with a limit ring limit screw 1, a limit ring limit screw 2, and a limit ring groove. The pressure ring is fixed to the fixed end of the harmonic reducer by screws. The slot of the limit ring clamps the switch handle of the second limit switch. When the harmonic reducer rotates, the pressure ring rotates, and the limit ring is driven to move up and down on the pressure ring through the thread. When it moves to the limit position, the pressure ring limit screw pushes the limit ring limit screw, so that the limit ring slot pushes the switch handle to continue to rotate an angle, thereby triggering the limit switch.

[0014] Preferably, the second limiting portion comprises a base connecting tube limiting groove arranged inside the base connecting tube, a base connecting tube limiting boss is arranged inside the base connecting tube, and a first limit switch handle is arranged inside the first limit switch.

[0015] Preferably, the second limit switch is fixed on the support seat, and the second limit switch handle is located in the limit ring groove.

[0016] Preferably, the second limit switch handle can be turned through an angle on the second limit switch before being in the on state.

[0017] Preferably, the first limit switch handle is in contact with and connected to a mirror base connecting tube limit groove on the mirror base connecting tube, and the mirror base connecting tube limit boss can push the first limit switch handle to rotate an angle.

[0018] Preferably, the first limit switch handle can be turned through an angle on the first limit switch before being in the on state.

[0019] The utility model provides a limiting mechanism for a harmonic equatorial mount. The limiting mechanism for the harmonic equatorial mount has the following beneficial effects:

[0020] (1) The limiting mechanism of the harmonic equatorial mount can play a limiting role by setting the first limiting part, thereby preventing the right ascension axis from rotating too much (unidirectional rotation exceeding 360°). The designed mechanism can realize the right ascension axis rotation within the range of ±360° and avoid cable entanglement, damage to the equipment, and damage to the equatorial mount and the telescope barrel;

[0021] (2) The limiting mechanism of the harmonic equatorial mount can further play a limiting role by providing a second limiting part, thereby preventing the declination axis from rotating too much (one-way rotation exceeding 360°), causing cable entanglement, damage to the equipment, and damage to the equatorial mount and the lens barrel. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0023] Figure 2 This is a schematic diagram of the overall cross-sectional structure of the utility model;

[0024] Figure 3 This is a schematic diagram of the structure of the first limiting part of the utility model;

[0025] Figure 4 This is a schematic diagram of the partial structure of the first limiting part of the utility model;

[0026] Figure 5 This is a schematic diagram of the structure of the second limiting part of the utility model;

[0027] Figure 6 This is a schematic diagram of the partial structure of the second limiting part of the utility model;

[0028] In the figure: 1, first limit switch; 2, mirror base connecting tube; 3, box; 4, first harmonic reducer fixed end; 5, first harmonic reducer output end; 6, mirror base; 312, connecting assembly; 9, support base; 31, first limit part; 7, second limit switch; 71, second limit switch handle; 8, second harmonic reducer output end; 10, second harmonic reducer fixed end; 11, pressure ring; 14, limit ring; 141, limit ring groove; 15, limit ring limit screw 1; 16, limit ring limit screw 2; 17, pressure ring limit screw 1; 18, pressure ring limit screw 2; 19, tightening screw; 111, pressure ring threaded hole; 32, second limit part; 112, first limit switch handle; 21, mirror base connecting tube limit groove; 22, mirror base connecting tube limit boss. DETAILED DESCRIPTION

[0029] In order to have a clearer understanding of the technical features, purposes and effects of the utility model, the specific implementation methods of the utility model are now described with reference to the accompanying drawings. Example

[0030] like Figure 1-6As shown, the utility model provides a technical solution: a limiting mechanism of a harmonic equatorial mount, comprising a first harmonic reducer fixed end 4, a first harmonic reducer output end 5, a box 3 fixedly connected to the output end of the first harmonic reducer fixed end 4, a mirror base connecting tube 2 fixedly connected to the first harmonic reducer output end 5, a mirror base 6 fixedly connected to one side of the mirror base connecting tube 2, a first limit switch 1 fixedly connected to one side of the box 3, a support seat 9 arranged on one side of the box 3, and a connecting component 312 arranged on one side of the box 3, the connecting component 312 comprising a first limiting portion 31 arranged on one side of the box 3, a second limiting portion 32 arranged on one side of the box 3, the first limiting portion 31 comprising a second limiting portion 31 fixedly connected to one side of the box 3 Switch 7, a second limit switch handle 71 is arranged inside the second limit switch 7, the support seat 9 is fixedly connected to the second harmonic reducer output end 8 through a mechanical structure, the box body 3 is fixedly connected to the second harmonic reducer fixed end 10 through a screw, the second harmonic reducer fixed end 10 is threadedly connected with a tightening screw 19, the second harmonic reducer fixed end 10 is fixedly connected with a pressure ring 11 through the tightening screw 19, the pressure ring 11 is provided with an external thread, the pressure ring 11 is threadedly connected to the limit ring 14, the upper part of the pressure ring 11 is respectively provided with a pressure ring limit screw 17, a pressure ring limit screw 2 18, and a pressure ring threaded hole 111, and the upper part of the limit ring 14 is respectively provided with a limit ring limit screw 15, a limit ring limit screw 2 16, and a limit ring groove 141.

[0031] In this embodiment, the second limit switch 7 is fixed on the support seat 9, and the second limit switch handle 71 is located in the limit ring groove 141. Through the cooperation of the second limit switch 7, the second limit switch handle 71, the pressure ring 11, the limit ring 14, and the limit ring groove 141, a limiting effect can be achieved, thereby preventing the right ascension axis from rotating too much and causing damage to the equatorial mount and the lens barrel.

[0032] Furthermore, the second limit switch handle 71 can be in the on state only after being rotated by an angle on the second limit switch 7 .

[0033] When it is needed, the second limit switch 7 and the support seat 9 are fixed, and the second harmonic reducer output end 8 is fixed to the support seat 9 by mechanical connection. When the harmonic reducer is driven by the input, the second harmonic reducer output end 8 and the second harmonic reducer fixed end 10 rotate relative to each other, and the pressure ring 11 fixed on the second harmonic reducer fixed end 10 also rotates synchronously, and the groove on the limit ring 14 clamps the second limit switch handle 71, so that the limit ring 14 does not rotate with the fixed end. When the second harmonic reducer fixed end 10 rotates clockwise and is viewed from the top to the bottom at a position close to 360°, the surface of the pressure ring limit screw 17 and the limit ring limit screw 2 16 are Contact, continue to rotate, the pressure ring limit screw 17 pushes the limit ring limit screw 2 16 to continue to rotate, and at the same time drives the second limit switch handle 71 to rotate an angle, the switch is in the on state, reaching the limit position, similarly, when the fixed end of the harmonic reducer rotates counterclockwise and is viewed from the top down close to the 360° position, the pressure ring limit screw 2 18 contacts the surface of the limit ring limit screw 15 and continues to rotate, the pressure ring limit screw 2 18 pushes the limit ring limit screw 15 to continue to rotate, and at the same time drives the second limit switch handle 71 to rotate an angle, the switch is in the on state, reaching the limit position, and the design of this mechanism can achieve ±360° position limit. Example

[0034] On the basis of Example 1, a preferred embodiment of a limiting mechanism of a harmonic equatorial mount provided by the present invention is as follows: Figures 1 to 6 As shown: the second limiting portion 32 includes a base connecting tube limiting groove 21 arranged inside the base connecting tube 2, a base connecting tube limiting boss 22 is arranged inside the base connecting tube 2, and a first limit switch handle 112 is arranged inside the first limit switch 1.

[0035] In this embodiment, the first limit switch handle 112 is in contact with and connected to the base connecting tube limiting groove 21 on the base connecting tube 2, and the base connecting tube limiting boss 22 can push the first limit switch handle 112 to rotate an angle. Through the cooperation of the first limit switch 1, the first limit switch handle 112, the base connecting tube limiting groove 21, and the base connecting tube limiting boss 22, a limiting effect can be achieved, thereby preventing the declination axis from rotating too much and causing damage to the equatorial mount and the tube.

[0036] Furthermore, the first limit switch handle 112 can be in the on state only after being rotated through an angle on the first limit switch 1 .

[0037] When working, the first harmonic reducer fixed end 4 and the first harmonic reducer output end 5 of the harmonic reducer can rotate freely when an external drive is input, and the first harmonic reducer output end 5 drives the lens seat connecting tube 2 and the lens barrel seat 6 to rotate synchronously. The first limit switch 1 is fixed to the box body 3, and the first limit switch handle 112 is located in the lens seat connecting tube limit groove 21. When the lens barrel seat 6 rotates clockwise or counterclockwise by nearly 180°, the first limit switch handle 112 is in contact with the surface of the lens seat connecting tube limit boss 22. The limit switch 112 is in the on state, and as the lens barrel seat 6 continues to rotate, the lens barrel connecting tube limit boss 22 pushes the first limit switch handle 112 to continue to rotate an angle. When the lens barrel seat rotates more than 180°, the limit switch is in the on state, so that it can be judged that the lens barrel seat has reached the limit position. This limit mechanism can ensure that the declination axis DEC axis of the harmonic equatorial mount can achieve ±180° unobstructed rotation for full-sky observation, while avoiding safety problems caused by excessive rotation of the lens barrel hitting obstacles such as the tripod.

[0038] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A limiting mechanism for a harmonic equatorial mount, comprising a first harmonic reducer fixing end (4) and a first harmonic reducer output end (5); A housing (3) fixedly connected to a fixed end (4) of the first harmonic reducer; A mirror base connecting tube (2) fixedly connected to the output end (5) of the first harmonic reducer; A lens tube seat (6) fixedly connected to one side of the lens seat connecting tube (2); A first limit switch (1) fixedly connected to one side of the box (3); A support seat (9) arranged on one side of the box body (3); and a connecting assembly (312) arranged on one side of the box body (3), characterized in that: The connection assembly (312) comprises a first limiting portion (31) arranged on one side of the box body (3), and a second limiting portion (32) is arranged on one side of the box body (3).

2. The limiting mechanism of a harmonic equatorial mount according to claim 1, characterized in that: The first limit portion (31) comprises a second limit switch (7) fixedly connected to one side of the housing (3); a second limit switch handle (71) is arranged inside the second limit switch (7); the support seat (9) is fixedly connected to the second harmonic reducer output end (8) via a mechanical structure; the housing (3) is fixedly connected to the second harmonic reducer fixed end (10) via a screw; the second harmonic reducer fixed end (10) is threadedly connected to a tightening screw (19); the second harmonic reducer The fixed end (10) is fixedly connected to a pressure ring (11) via a tightening screw (19); the pressure ring (11) is provided with an external thread; the pressure ring (11) is threadedly connected to a limit ring (14); a pressure ring limit screw 1 (17), a pressure ring limit screw 2 (18), and a pressure ring threaded hole (111) are respectively provided on the upper part of the pressure ring (11); and a limit ring limit screw 1 (15), a limit ring limit screw 2 (16), and a limit ring groove (141) are respectively provided on the upper part of the limit ring (14).

3. The limiting mechanism of a harmonic equatorial mount according to claim 1, characterized in that: The second limiting portion (32) comprises a mirror base connecting tube limiting groove (21) arranged inside the mirror base connecting tube (2), a mirror base connecting tube limiting boss (22) is arranged inside the mirror base connecting tube (2), and a first limit switch handle (112) is arranged inside the first limit switch (1).

4. The limiting mechanism of a harmonic equatorial mount according to claim 2, characterized in that: The second limit switch (7) is fixed on the support seat (9), and the second limit switch handle (71) is located in the limit ring groove (141).

5. The limiting mechanism of a harmonic equatorial mount according to claim 2, characterized in that: The second limit switch handle (71) can be turned through an angle on the second limit switch (7) before it can be in the on state.

6. The limiting mechanism of a harmonic equatorial mount according to claim 3, characterized in that: The first limit switch handle (112) is in contact with a mirror base connecting tube limit groove (21) on the mirror base connecting tube (2), and the mirror base connecting tube limit boss (22) can push the first limit switch handle (112) to rotate by an angle.

7. The limiting mechanism of a harmonic equatorial mount according to claim 3, characterized in that: The first limit switch handle (112) can be turned an angle on the first limit switch (1) before it can be in an on state.

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