Limiting structure and azimuth turntable with same

Abstract

The utility model relates to a limiting structure and an orientation rotary table with the limiting structure, the limiting structure is arranged on the orientation rotary table, the orientation rotary table comprises a fixed table and a rotary table arranged on the fixed table, and the limiting structure comprises a table top arranged on the fixed table; the rotating body is arranged on the rotating table; the limiting piece is arranged on the upper portion of the rotating body, and the limiting screw assembly is arranged on the rotating body, used in cooperation with the limiting piece and used for limiting the rotating stroke of the rotating body. The limiting device is simple in structure, low in machining and assembling difficulty and narrow in required space, and meets the limiting requirement of small equipment; meanwhile, by adjusting the size requirement of the arc-shaped groove of the limiting piece, the requirement for limiting at different angles during over 360-degree work is met, accurate limiting can be achieved, and adjustment is convenient.

Description

Technical Field

[0001] This utility model relates to the field of communication antenna technology, specifically to the field of two-dimensional fixed stage control for communication antennas, and particularly to a limiting structure and an azimuth turntable having the limiting structure. Background Technology

[0002] Currently, most azimuth turntables employ mechanical limiters to protect the turntable and restrict its position. A common approach is to use a movable component as a boss and a fixed component as a groove (or a movable component as a groove and a fixed component as a boss) to achieve 360° range limiting. When the required range of motion exceeds 360°, a lever mechanism is typically used to increase the range. However, this approach has drawbacks such as requiring a sufficiently large range of motion and ample space, making it difficult to meet the requirements for portable azimuth turntables. Utility Model Content

[0003] In view of this, the present invention proposes a limiting structure and an orientation turntable having the limiting structure, aiming to solve the problems existing in the prior art.

[0004] Specifically, this utility model provides a limiting structure, which is disposed on an azimuth turntable. The azimuth turntable includes a fixed platform and a rotating platform disposed on the fixed platform. The limiting structure includes:

[0005] A platform is provided on the fixed platform;

[0006] A rotating body mounted on the rotating platform;

[0007] A limiting member is provided on the upper part of the rotating body;

[0008] A limiting screw assembly provided on the rotating body, which works in conjunction with a limiting member to limit the rotational stroke of the rotating body;

[0009] The limiting screw assembly includes a first limiting screw and a second limiting screw;

[0010] The limiting member has a first arc-shaped groove for guiding the movement trajectory of the first limiting screw and a second arc-shaped groove for guiding the movement trajectory of the second limiting screw.

[0011] Based on the above scheme, a limiting post is provided on the limiting member to cooperate with the platform and limit the rotation angle of the rotating body.

[0012] Based on the above scheme, a protrusion is provided on the platform to collide with the limiting post to limit the rotation limit position of the limiting member.

[0013] Based on the above scheme, the first arc-shaped groove and the second arc-shaped groove are arranged on the limiting member along a circumferential direction.

[0014] Based on the above scheme, the arc lengths of the first arc groove and the second arc groove are equal.

[0015] Based on the above scheme, the surface of the limiting post is covered with a wear-resistant layer.

[0016] In addition, this utility model also provides an orientation turntable, including a fixed platform and a rotating platform disposed on the fixed platform, and also includes the aforementioned limiting structure.

[0017] This utility model employs a limiting screw that engages with the arc-shaped groove of a limiting component, and the rigid limiting post of the limiting component engages with the protrusion on the platform, enabling the limiting of the directional turntable. The structure is simple, with low processing and assembly difficulty, requiring minimal space, thus meeting the limiting requirements of small equipment. By adjusting the size of the arc-shaped groove of the limiting component, it can meet the limiting requirements of different angles during operation exceeding 360°, providing accurate limiting and convenient adjustment. This utility model proposes a small-sized, simple, and easy-to-install safety limiting structure, solving the problem of not being able to install toggle blocks and buffers in confined spaces, thereby achieving a rotation angle exceeding ±180°. Attached Figure Description

[0018] 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:

[0019] Figure 1 This is a schematic diagram (three-dimensional view) of the limiting structure in this utility model;

[0020] Figure 2 This is a schematic diagram of the limiting structure in this utility model;

[0021] Figure 3 This is a cross-sectional view of the limiting structure in this utility model;

[0022] Figure 4 This is a diagram showing the forward hard-limit collision state in this utility model;

[0023] Figure 5 This is a diagram showing the reverse hard-limit collision state in this utility model. 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 Figure 1 As shown, this application provides a specific embodiment of a limiting structure with a rotation angle exceeding ±180°. The limiting structure is set on an azimuth turntable, which includes a fixed platform and a rotating platform set on the fixed platform. The limiting structure with a rotation angle exceeding ±180° includes a platform 3 set on the fixed platform.

[0027] Rotating body 4 is mounted on the rotating platform;

[0028] A limiting member 5 is provided on the upper part of the rotating body 4, and a limiting screw assembly 6 is provided on the rotating body 4 to limit the rotation stroke of the rotating body 4 in cooperation with the limiting member 5.

[0029] In order to limit the maximum angle during the rotation process, a limiting post 7 is provided on the limiting member 5 to cooperate with the platform 3 to limit the rotation angle of the rotating body 4. A protrusion 3-1 is provided on the platform 3 to collide with the limiting post 7 to limit the rotation limit position of the limiting member 5.

[0030] like Figure 3 As shown, in one specific implementation, the limiting screw assembly 6 includes a first limiting screw 6-1 and a second limiting screw 6-2.

[0031] Specifically, the limiting member 5 is provided with a first arc-shaped groove 5-1 and a second arc-shaped groove 5-2 for guiding the movement trajectory of the first limiting screw 6-1 and the second limiting screw 6-2. The first arc-shaped groove 5-1 and the second arc-shaped groove 5-2 are symmetrically arranged on the limiting member 5. The first limiting screw 6-1 is located in the first arc-shaped groove 5-1, and the second limiting screw 6-2 is located in the second arc-shaped groove 5-2.

[0032] When in use, when the machine is moving, the limiting screw assembly 6 on the mechanical transmission component (rotating body 4) moves in the arc groove of the limiting component 5. After moving to the limit position of the arc groove, the mechanical limiting post 7 of the limiting component 5 is driven to hit the protrusion 3-1 of the table surface 3, and the transmission rotates to the hard limit position and stops moving, thus satisfying the limiting requirements.

[0033] This utility model is based on Figure 1 The structure shown is implemented in which the platform is a fixed component that does not rotate, and the limiting screw is installed on the rotating body. There is a gap between the limiting screw and the limiting component to ensure that there is no interference when the structure is running. At the same time, the limiting component and the rotating body are made of different materials to ensure that there is no biting during the movement, thereby improving the stability of the movement and enhancing the reliability.

[0034] like Figure 2 The position shown indicates that the state is at zero. During operation, the limiting component 5 remains stationary. The rotating body 4 drives the first limiting screw 6-1 and the second limiting screw 6-2 to rotate to the limit positions of the first arc groove 5-1 and the second arc groove 5-2 of the limiting component 5. Then, it drives the limiting component 5 to rotate. When the limiting component 5 rotates to its upper position, the limiting post 7 collides with the protrusion 3-1 on the platform 3, completing the forward hard limiting collision motion. Figure 4 As shown; after the forward hard limit collision, the limiting member 5 remains stationary. The rotating body 4 drives the first limiting screw 6-1 and the second limiting screw 6-2 to rotate in the opposite direction to the limit position of the arc groove of the limiting member 5, and then drives the limiting member 5 to rotate in the opposite direction. When the limiting member 5 rotates to its upper part, the limiting post 7 collides with the protrusion 3-1 of the platform 3, completing the reverse hard limit collision motion, as shown. Figure 5 As shown above, this is a complete cycle of a limit device.

[0035] During this process, since the limiting screw assembly 6 and the limiting component 5 will collide and contact multiple times, the limiting post 7 is specially surface-treated. High-strength material is selected and special surface treatment is performed to improve its wear resistance and strength, thereby extending the service life of the limiting structure.

[0036] Example 2

[0037] Based on Embodiment 1, this utility model provides an azimuth turntable, including a fixed platform and a rotating platform disposed on the fixed platform, and further including a limiting structure with a rotation angle exceeding ±180° as described in Embodiment 1 installed on the azimuth turntable. The azimuth turntable of this embodiment achieves limiting through the limiting structure with a rotation angle exceeding ±180°.

[0038] This utility model's limiting structure with a rotation angle exceeding ±180° uses a limiting screw that engages with the arc-shaped groove of the limiting component 5. The rigid limiting post 7 of the limiting component 5 engages with the protrusion 3-1 on the table surface, which can realize the limiting of the directional turntable. The structure is simple, with low processing and assembly difficulty, and requires little space, meeting the limiting requirements of small equipment. At the same time, by adjusting the size of the arc-shaped groove of the limiting component, it can meet the limiting requirements of different angles when working beyond 360°, accurately limiting and conveniently adjusting.

[0039] 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 limiting structure provided on an azimuth turntable, the azimuth turntable comprising a fixed table and a rotating table provided on the fixed table, characterized in that, The limiting structure includes: A platform (3) is provided on the fixed platform; A rotating body (4) is mounted on the rotating platform; A limiting member (5) is provided on the upper part of the rotating body (4); A limiting screw assembly (6) is provided on the rotating body (4) and is used in conjunction with the limiting member (5) to limit the rotational stroke of the rotating body (4). The limiting screw assembly (6) includes a first limiting screw (6-1) and a second limiting screw (6-2). The limiting member (5) has a first arc-shaped groove (5-1) for guiding the movement trajectory of the first limiting screw (6-1) and a second arc-shaped groove (5-2) for guiding the movement trajectory of the second limiting screw (6-2).

2. The limiting structure according to claim 1, characterized in that, A limiting post (7) is provided on the limiting member (5) and cooperates with the table (3) to limit the rotation angle of the rotating body (4).

3. The limiting structure according to claim 2, wherein The platform (3) is provided with a protrusion (3-1) for colliding with the limiting post (7) to limit the rotation limit position of the limiting member (5).

4. The limiting structure according to claim 1, wherein The first arc-shaped groove (5-1) and the second arc-shaped groove (5-2) are arranged on the limiting member (5) along a circumferential direction.

5. The limiting structure according to claim 4, wherein The arc lengths of the first arc groove (5-1) and the second arc groove (5-2) are equal.

6. The position-limiting structure according to claim 2, characterized in that, The surface of the limiting post (7) is covered with a wear-resistant layer.

7. An azimuth turntable comprising a rotating body and a fixed table, characterized in that It also includes the limiting structure as described in any one of claims 1-6.

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