Limiting device with rotation angle exceeding 360 degrees and antenna turntable

Abstract

The utility model relates to a limiting device with a rotation angle exceeding 360 degrees and an antenna rotary table. The limiting device comprises a supporting frame arranged on a shell and a sliding groove formed in the supporting frame and used for limiting the rotation stroke. The first limiting ring is arranged on the rotating shaft and used for rotating around the axis of the first limiting ring along with the rotating shaft; the second limiting ring is arranged on the first limiting ring and used for pushing the first limiting ring; and the angle compensation sliding block is arranged in the sliding groove and used for blocking the first limiting ring. The utility model provides a mechanical limiting structure which is reliable in structure, firm, durable, small in axial size, material-saving and low in processing cost aiming at the existing small portable antenna turntable.

Description

Technical Field

[0001] This utility model relates to the field of communication antenna technology, specifically to the field of small portable antenna turntable control, and particularly to a limiting device with a rotation angle exceeding 360 degrees and an antenna turntable having the limiting device. Background Technology

[0002] In the radar and antenna industry, reciprocating turntables are frequently used. The rotation angle of the turntable needs to reach ±360°. Currently, in large radar and antenna equipment, due to the large size of the turntable, there is often a large design margin in the mechanical structure design, which can achieve ±360° mechanical limit. However, in small, quick-assembly and disassembly portable antennas, due to size limitations, mechanical limit often cannot meet the technical requirements. Generally, the rotation limit of small portable antennas can reach ±360°, and it is often impossible to set mechanical limit for the requirement of ±360° rotation angle. Utility Model Content

[0003] In view of this, the present invention proposes a limiting device and antenna turntable with a rotation angle of more than 360 degrees, aiming to solve the problems existing in the prior art.

[0004] Specifically, this utility model provides a limiting device, which is mounted on a turntable. The turntable further includes a rotating shaft and a housing. The limiting device includes:

[0005] A support frame is provided on the housing, and a slide groove is provided on the support frame to limit the rotation stroke;

[0006] A first limiting ring is provided on the rotating shaft for rotating with the rotating shaft about its own axis;

[0007] A second limiting ring is provided above the first limiting ring to drive the first limiting ring to rotate;

[0008] An angle compensation slider, provided within the groove, is used to block the second limiting ring to compensate for the angular deviation caused by the mechanical dimensions of the first and second limiting rings.

[0009] Based on the above scheme, a first limiting post is provided on the first limiting ring, and a second limiting post is provided on the second limiting ring for pushing the first limiting post.

[0010] Based on the above scheme, it also includes: a first lubricating ring disposed between the first limiting ring and the second limiting ring for lubricating the rotational motion between the first limiting ring and the second limiting ring.

[0011] Based on the above scheme, it also includes: a second lubrication ring disposed on the inner side of the second limiting ring.

[0012] Based on the above scheme, it also includes: a clamping cap provided on the second lubrication ring for pressing the second lubrication ring and the first limiting ring.

[0013] Based on the above scheme, the curvature of the slide groove matches the circumferential curvature of the shell.

[0014] Based on the above scheme, mounting holes for installing connecting screws are provided at corresponding positions on the clamping cover and the first limiting ring.

[0015] In addition, this utility model also provides an antenna turntable, including a rotating shaft and a housing, and the aforementioned limiting device is provided on the rotating shaft and the housing.

[0016] Compared with existing devices, this utility model adopts a two-layer nested slip ring structure with a lubrication ring between the two limiting rings. Its structure is simple and not easy to damage parts. Since it is a rotary structure, the structure can be made relatively small, which can meet the design and installation requirements of small-sized turntables. At the same time, the shapes of each component are simple and regular geometric shapes, which are easy to process and have relatively low processing accuracy requirements. They can all be processed by ordinary milling machines and lathes, with short processing cycles and low processing costs. Attached Figure Description

[0017] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of the invention. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0018] Figure 1 This is a schematic diagram of the limiting device with a rotation angle exceeding ±360° in this utility model;

[0019] Figure 2 This is a schematic diagram of the limiting device with a rotation angle exceeding ±360° in this utility model (showing the slide groove);

[0020] Figure 3 This is a structural schematic diagram of the limiting device with a rotation angle exceeding ±360° in this utility model (showing the positional relationship between the first limiting post, the second limiting post, and the angle compensation module);

[0021] Figure 4 This is a cross-sectional view of the limiting device with a rotation angle exceeding ±360° in this utility model;

[0022] Figure 5 This is a schematic diagram of the clockwise limiting structure in this utility model, wherein (a) represents a clockwise rotation of 0°, (b) represents a clockwise rotation of 160°, and (c) represents a clockwise rotation of 180°.

[0023] Figure 6 This is a schematic diagram of the counterclockwise limiting structure in this utility model, wherein (a) represents a counterclockwise rotation of -160°, (b) represents a counterclockwise rotation of -320°, and (c) represents a counterclockwise rotation of -360°. Detailed Implementation

[0024] Exemplary embodiments of the present disclosure will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the disclosure to those skilled in the art. It should be noted that, unless otherwise specified, embodiments and features of the present invention can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0025] Example 1

[0026] like Figures 1-2 As shown, this application provides a specific embodiment of a limiting device with a rotation angle exceeding ±360°. The limiting device is mounted on a turntable, which includes a rotating shaft and a housing. The limiting device with a rotation angle exceeding ±360° includes: a support frame 1 mounted on the housing; a first limiting ring 4 mounted on the rotating shaft for rotating around its own axis with the rotating shaft; and a second limiting ring 3 mounted above the first limiting ring 4 for pushing the first limiting ring 4 to rotate. In actual use, the support frame 1 is fixed to the turntable housing to remain stationary; the first limiting ring 4 is fixed to the rotating shaft of the turntable and rotates around its own axis together with the gimbal's rotating shaft.

[0027] Specifically, a first limiting post 4-1 is provided on the first limiting ring 4, and a second limiting post 3-1 is provided on the second limiting ring 3 to push the first limiting post 4-1. The second limiting post 3-1 can contact the angle compensation slider 2 provided in the slide groove 1-1, but the second limiting post 3-1 does not extend into the slide groove 1-1.

[0028] like Figure 3 As shown, to compensate for the angular deviation caused by the mechanical dimensions of the first limiting post 4-1 and the second limiting post 3-1 on the first limiting ring 4, a specific implementation scheme is provided, which further includes: an angle compensation slider 2 disposed in the slide groove 1-1 of the support frame 1. If a larger angle is required, the opening angle of the slide groove 1-1 can be appropriately increased to adjust the limit angle. When the angle compensation slider 2 is made of an elastic material, this device has a buffering capacity when it reaches the limit position, which can prevent damage to structural components due to control program errors.

[0029] like Figure 4 As shown, in a specific implementation scheme, it further includes: a first lubricating ring 7 disposed between the first limiting ring 4 and the second limiting ring 3 for lubricating the rotational movement between the first limiting ring 4 and the second limiting ring 3.

[0030] It also includes: a second lubricating ring 5 disposed on the inner side of the second limiting ring 3 and a clamping cap 6 disposed on the second lubricating ring 5 for pressing the second lubricating ring 5 and the first limiting ring 4.

[0031] Both the first lubricating ring 7 and the second lubricating ring 5 are made of self-lubricating material. The first lubricating ring 7 is located between the first limiting ring 4 and the second limiting ring 3, and plays a lubricating role for the rotational movement between the first limiting ring 4 and the second limiting ring 3. The second limiting ring 3 is sleeved outside the first lubricating ring 7, and the second lubricating ring 5 is sleeved inside the second limiting ring 3. The clamping cover 6 is placed on the upper part of the second lubricating ring 5. The clamping cover 6 and the first limiting ring 4 are provided with mounting holes at corresponding positions, so that the clamping cover 6 and the first limiting ring 4 can be installed together with the connecting screw 8.

[0032] During operation, the first limiting ring 4 is fixed to the rotation axis of the turntable during actual use. A first limiting post 4-1 is set on the side of the first limiting ring 4, and the initial position is as follows: Figure 5 As shown in (a), at this time, the first limiting post 4-1 on the first limiting ring 4 is in contact with the second limiting post 3-1 on the second limiting ring 3. When the first limiting ring 4 rotates clockwise with the rotation axis of the turntable, it pushes the second limiting ring 3 to rotate clockwise by 340°. After that, the second limiting post 3-1 on the second limiting ring 3 contacts the angle compensation slider (as shown in (a)). Figure 5 (b) As shown, the first limiting ring 4 continues to push the second limiting ring 3, and the second limiting ring 3 pushes the angle compensation slider 2. All three rotate simultaneously 20° clockwise to the positive limit position of 360° (as shown in [the diagram]). Figure 5 (c) is shown.

[0033] The first limiting ring 4 is currently at 360°. After rotating counterclockwise 350°, the first limiting post 4-1 on the first limiting ring 4 contacts the second limiting post 3-1 on the second limiting ring 3 (e.g., Figure 6 (a) As shown, at this time, the first limiting ring 4 pushes the second limiting ring 3 to continue moving, rotating counterclockwise by 10° to reach the 0 position. The first limiting ring 4 continues to push the second limiting ring 3 to rotate counterclockwise by 320° (as shown in the image). Figure 6(b) As shown, the limiting post of the second limiting ring 3 contacts the angle compensation slider 2. At this time, the first limiting ring 4 continues to push the second limiting ring 3 to move counterclockwise, simultaneously driving the angle compensation slider 2 to move. After moving counterclockwise by 40°, the angle compensation slider 2 reaches its limit position. At this time, the first limiting ring 4 also moves to the negative limit position, that is, at -360° (as shown in (b)). Figure 6 (c) is shown.

[0034] The reverse process involves first running counter-clockwise and then clockwise, following the same procedure.

[0035] Example 2

[0036] Based on Embodiment 1, this utility model provides an antenna turntable, including a rotating shaft and a housing, and further including a limiting device with a rotation angle exceeding ±360° as described in Embodiment 1, installed on the antenna turntable. The antenna turntable of this embodiment achieves limiting via the limiting device with a rotation angle exceeding ±360°.

[0037] This utility model's limiting device with a rotation angle exceeding ±360° adopts a two-layer nested slip ring structure, with a lubrication ring set between the two limiting rings. Its structure is simple and not prone to damage. Because it is a rotary structure, the structure can be made relatively small, which can meet the design and installation requirements of small-sized turntables.

[0038] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A rotation angle over 360 degree limiting device, the rotation angle over 360 degree limiting device is arranged on a rotary table, the rotary table further comprises a rotating shaft and a shell, characterized in that, The limiting device includes: A support frame (1) is provided on the housing, and a slide groove (1-1) is provided on the support frame (1) to limit the rotation stroke. A first limiting ring (4) is provided on the rotating shaft for rotating with the rotating shaft around its own axis; A second limiting ring (3) is provided above the first limiting ring (4) for pushing the first limiting ring (4) to rotate; An angle compensation slider (2) is provided in the groove (1-1) to block the second limiting ring (3) to compensate for the deviation of the mechanical dimensions of the first limiting ring (4) and the second limiting ring (3) caused by the angle.

2. The rotation angle super 360-degree limiting device according to claim 1, characterized in that, A first limiting post (4-1) is provided on the first limiting ring (4), and a second limiting post (3-1) is provided on the second limiting ring (3) for pushing the first limiting post (4-1).

3. The limiting device with a rotation angle exceeding 360 degrees according to claim 1, characterized in that, Also includes: A first lubrication ring (7) is provided between the first limiting ring (4) and the second limiting ring (3) for lubricating the rotational motion between the first limiting ring (4) and the second limiting ring (3).

4. The rotation angle super 360-degree limiting device according to claim 1, characterized in that, Also includes: A second lubrication ring (5) is provided on the inner side of the second limiting ring (3).

5. The rotation angle limiting device of claim 4, wherein the rotation angle is more than 360 degrees. Also includes: A clamping cap (6) is provided on the second lubrication ring (5) for clamping the second lubrication ring (5) and the first limiting ring (4).

6. The rotation angle super 360-degree limiting device according to claim 1, wherein The curvature of the groove (1-1) matches the circumferential curvature of the shell.

7. The rotation angle super 360-degree limiting device according to claim 5, characterized in that, Mounting holes for mounting connecting screws (8) are provided at corresponding positions on the clamping cover (6) and the first limiting ring (4).

8. An antenna turret comprising a rotating shaft and a housing, characterized in that The limiting device according to any one of claims 1-7 is provided on the rotating shaft and the housing.

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