WO2018188011A1

WO2018188011A1 - Aerial base station cradle head

Info

Publication number: WO2018188011A1
Application number: PCT/CN2017/080374
Authority: WO
Inventors: 邓东云; 翁金祖
Original assignee: 华为技术有限公司
Priority date: 2017-04-13
Filing date: 2017-04-13
Publication date: 2018-10-18

Abstract

Embodiments of the present application provide an aerial base station cradle head, comprising: a ball head universal joint, a housing of the ball head universal joint being fixedly mounted to the bottom of a gondola; a holding pole, one end of the holding pole being fixedly connected to the drive shaft of the ball head universal joint, and the other end of the holding pole being a free end, a base station device being fixedly mounted onto the holding pole; and a magnet, the magnet being horizontally and fixedly mounted onto the holding pole and being perpendicular to the holding pole. The cradle head can be automatically adjusted by means of the ball head universal joint and the magnet in case of interference, to maintain stability, and recover the original angles of the inclination angle and the azimuthal angle of an antenna. The adjustment process is completely realized by the mechanical structure of the cradle head itself, without the need to increase the weight of the cradle head to ensure the cradle head remains balanced, also without the need for an active control apparatus such as a servo motor. The invention has a simple structure and small weight and can greatly improve the reliability of self stabilization of the cradle head.

Description

Aerial base station pan/tilt

Technical field

The present application relates to the field of communications, and in particular, to an air base station pan/tilt.

Background technique

The air base station uses an aircraft or a floating device, such as a balloon boat, to lift the ground base station equipment or the tower base station equipment to a certain height, thereby greatly expanding the coverage area of the base station signal. 1 is a schematic diagram of a mooring balloon airborne base station. The balloon boat is connected to the ground by a cable, and the payload (base station equipment) is installed under the balloon boat. Specifically, as shown in FIG. 2, a base station device (RRU (Radio Remote Unit, The radio remote unit and the antenna are fixedly mounted on the gimbal, and the gimbal is installed in the hanging basket below the balloon boat.

Since the aircraft or floating equipment, such as the balloon boat in Figure 2, moves and sways due to air flow or weather changes (such as heavy rain and heavy snow), the position of the base basket equipment in the basket and the basket also changes. The antenna of the base station device is offset from the original azimuth and tilt. Wherein, the azimuth angle is the horizontal pointing angle of the antenna, and the tilt angle is the vertical pointing angle of the antenna.

In order to ensure the stability of the antenna and prevent the antenna from shifting the original azimuth and tilt angle, the prior art mainly adjusts the pointing of the antenna by controlling the pan/tilt. Specifically, the first is to design the gimbal's own weight and load to be above a certain ratio to maintain the balance of the gimbal itself and prevent the gimbal from overturning. The second is to use the servo motor to control the horizontal direction of the gimbal when the antenna is offset. In the vertical direction, since the base station equipment and its antenna are fixedly mounted on the gimbal, the horizontal and vertical orientation of the antenna can be adjusted by the movement of the gimbal, so that the antenna restores the original azimuth and inclination.

However, the prior art has the following problems: First, in order to maintain the balance of the gimbal itself, the weight of the gimbal will be large, not only increasing the production cost, but also the power consumption of the servo motor; secondly, the introduction of the servo motor and related Active parts such as components, the entire PTZ control system is difficult and reliable.

Summary of the invention

The application provides an aerial base station pan/tilt to reduce the power consumption of the gimbal and improve the reliability of the gimbal.

In a first aspect, the application provides an air base station pan/tilt, the pan/tilt head includes:

a ball joint, the outer casing of the ball joint is fixedly mounted on the bottom of the basket of the aerial base station;

Holding a pole, one end of the pole is fixedly connected with the driving shaft of the ball joint, and the other end is a free end, and the base station device is fixedly mounted on the pole;

a magnet, the magnet being laterally fixedly mounted on the pole, perpendicular to the pole.

In conjunction with the first aspect, in a first possible implementation manner of the first aspect, the pan/tilt further includes a protective cover fixedly mounted on the hanging basket to form a closed space, the ball head universal The knot, the pole and the magnet are located inside the enclosed space.

With reference to the first possible implementation manner of the first aspect, in a second possible implementation manner of the first aspect, the cloud platform further includes a protective layer, the protective layer is laterally fixedly mounted on the pole, or horizontally Securely mounted on the protective cover, the pole passes through the protective layer, and the protective layer is a magnetic shielding material for forming between the magnet and a base station device fixedly mounted on the pole Magnetic shielding layer.

In combination with the first aspect, or any one of the first to second possible implementations of the first aspect, in a third possible implementation manner of the first aspect, the housing of the ball joint is fixedly mounted on the In the groove at the bottom of the basket, a damping layer is further installed between the groove and the outer casing of the ball joint, and the damping layer is fixedly mounted on the inner wall of the groove.

In conjunction with the third possible implementation of the first aspect, in the fourth possible implementation of the first aspect, the damping layer is an intelligent damping material.

In combination with the first aspect, or any one of the first to second possible implementations of the first aspect, in the fifth possible implementation of the first aspect, the magnet and the pole are further mounted The isolation layer is fixedly connected to one side of the spacer and the other side is fixedly connected to the magnet, and the isolation layer is a magnetic shielding material.

The air base station pan/tilt provided by the embodiment of the present application, when the aircraft or the floating equipment is moved or shaken by the influence of air flow or weather, or when the pan/tilt itself is shaken by the impact, in the vertical direction, the ball head universal The festival will rotate by the weight of the gimbal, so that the gimbal will return to its original natural vertical state, so that the inclination of the antenna installed on the gimbal will be restored to the original angle; on the other hand, in the horizontal direction, when the cloud When the table rotates, the magnet will also rotate due to the action of the earth's magnetic force to return to the original north-south direction, thereby driving the pole and the ball joint to rotate, so that the azimuth of the antenna mounted on the gimbal is also restored. Original angle. In this way, the pan/tilt will automatically adjust when the interference occurs, so that the inclination and azimuth of the antenna are kept stable. The adjustment process is completely realized by the mechanical structure of the gimbal itself, and the structure is simple, and the weight of the gimbal is not required to be increased. Keeping the balance of the gimbal itself does not require an active control device such as a servo motor, so the weight of the gimbal can be greatly reduced, and the reliability of the self-stabilization of the gimbal can be improved.

DRAWINGS

In order to more clearly illustrate the technical solutions of the present application, the drawings used in the embodiments will be briefly described below. Obviously, for those skilled in the art, without any creative labor, Other drawings can also be obtained from these figures.

1 is a schematic diagram of a prior art application for a cable ballooning air base station;

2 is a schematic diagram of installation of a prior art air base station pan/tilt;

3 is a schematic structural diagram of an embodiment of an air base station pan/tilt according to the present application;

4 is a top view showing a mounting of a ball joint in a pan/tilt head of an air base station of the present application;

5 is a top view showing another installation of a ball joint universal joint in an aerial base station pan/tilt of the present application;

Figure 6 is a side view showing an installation of a magnet in an aerial base station pan/tilt of the present application;

Figure 7 is another side view of the mounting of the magnet in the aerial base station pan/tilt of the present application;

FIG. 8 is a schematic structural diagram of an embodiment of an air base station pan/tilt according to the present application.

detailed description

3 is a schematic structural diagram of an embodiment of an air base station head according to the present application. The air base station pan/tilt (hereinafter referred to as a pan/tilt head) includes: a ball joint 2, a pole 3 and a magnet 4.

The ball joint 2 is fixedly mounted on the bottom of the gondola 1 of the air base station, and in fact, the outer shell (spherical shell or simple shell) of the ball joint is fixedly mounted on the gondola 1 bottom. The gondola 1 is a device installed under the aircraft or the floating equipment for lifting the pan and base station equipment, and is not limited to the box shown in FIG. 2, and the gondola shown in FIG. 3 is actually fixedly mounted on A connector below the aircraft or floating equipment used to securely connect the aircraft or floating equipment to the gimbal.

The outer casing of the ball joint 2 can be directly fixedly mounted on the bottom of the gondola 1, as shown in FIG. 4; or, as shown in FIG. 5, a groove 8 is opened at the bottom of the gondola 1 The outer casing of the ball joint 2 is fixedly mounted in the groove 8, and the fixed installation may be a welding installation or a riveting installation. In FIG. 5, a damping layer 9 is further installed between the groove 8 and the outer casing of the ball joint 2, and the damping layer 9 is fixedly mounted on the inner wall of the groove 8, the fixed installation It can be bonded or bolted. The damping layer 9 is in contact with the outer casing of the ball joint 2 for slowing the mechanical vibration of the ball joint 2, preventing the stick 3 from oscillating, so that the pan/tilt adjustment process converges as quickly as possible. The damping layer 9 can be a common damping material such as a common metal rubber, or an intelligent damping material such as an alloy damping material having a shape memory effect. The intelligent damping material has higher damping performance and is beneficial to the rapid stability of the pole 2 . Improve the efficiency of the adjustment of the gimbal.

One end of the holding rod 3 is fixedly connected with the driving shaft of the ball joint 2 , and the fixed connection may be welded, riveted or bolted, and the holding rod 3 and the ball joint 2 The drive shaft forms a rigid overall. The other end of the pole 3 is a free end, and the pole 3 is naturally vertical under the action of gravity. a base station device 7 such as an RRU (Radio Remote Unit) and an antenna are fixedly mounted on the pole 3, and the fixed installation may be performed by welding, riveting or bolting, etc., so that the base station device 7 and The pole 3 forms a rigid whole. When the base station equipment is installed, the pointing angle of the antenna is fixed according to the design requirements, so that the antenna has no external interference in the cloud platform, that is, when the pole is stationary, the pointing angle is constant.

The magnet 4 is laterally fixedly mounted on the pole 3 and is perpendicular to the pole 3. If the pole 3 is a non-magnetizable material, the magnet 4 can be fixedly mounted on the pole 3 in a direct contact manner. Specifically, as shown in FIG. 6a, the magnet 4 is fixed on the holder 11. One side is in direct contact with the holding rod 3, and the clamping seat 11 can be fixedly connected to the holding rod 3 by welding, riveting or bolting. Of course, the pole 3 When the material is not magnetizable, the magnet 4 can also be fixedly mounted on the pole 3 in a non-direct contact manner. For example, as shown in FIG. 6b, the magnet 4 is fixed on the bracket 12, and the bracket 12 is fixed. It can be fixedly connected to the pole 3 by means of welding, riveting or bolting.

If the pole 3 is a magnetizable material, since the pole is magnetized and interacts with the magnet to affect the rotation of the magnet, in order to prevent the pole from being magnetized by the magnet, the magnet 4 and the pole 3 need to be required. The isolation layer 10 is mounted, and the isolation layer 10 is a magnetic shielding material. Since the magnet 4 is required to rotate the pole 3, the manner of filling the gap between the magnet and the pole is not adopted. In this way, the connection between the magnet and the pole is not tight enough to weaken the linkage between the two. The fixing layer 10 is fixedly connected to the holding rod 3, and the fixing connection may be bonding, welding, riveting or bolting; the other side of the separating layer 10 is fixedly connected with the magnet 4, The fixed connection may be bonded, as shown in FIG. 7a, or as shown in FIG. 7b, the magnet 4 is fixed to a bracket 13, and the bracket 13 and the spacer layer 10 are riveted or bolted, etc. The way to make a fixed connection. In addition, in order to enhance the linkage between the pole 3 and the magnet 4, the isolation layer may be a rigid magnetic shielding material.

The working principle of the air base station pan/tilt provided by the embodiment of the present application is: when the aircraft or the floating equipment is moved or shaken by the influence of air flow or weather, or when the pan/tilt itself is shaken by the impact, in the vertical direction, The ball joint will rotate by the weight of the gimbal. Due to the friction and the gravity of the gimbal, the rotation will gradually converge to a standstill, so that the gimbal will return to its original natural vertical state, thus making the cloud The tilt angle of the antenna installed on the stage is restored to the original angle; on the other hand, in the horizontal direction, when the pan/tilt rotates, the magnet will also rotate due to the action of the earth's magnetic force to return to the north-south direction, thereby driving the pole and The ball joint is rotated. Due to the friction, the ball joint will gradually converge to a standstill. The pole and the magnet, which are rigid and integral with the ball joint, will also rest. The magnet will return to its original state. The north-south direction is such that the azimuth of the antenna mounted on the gimbal is also restored to the original angle. In this way, the gimbal will automatically adjust when the interference occurs, so that the inclination and azimuth of the antenna remain stable. The adjustment process is completely realized by the mechanical structure of the gimbal itself. The main adjustment components are ball joints and magnets, and the structure is simple. It is not necessary to increase the weight of the gimbal to maintain the balance of the gimbal itself, and does not require a servo motor. The active control device can greatly reduce the self-weight of the gimbal and improve the reliability of the self-stabilization of the gimbal.

FIG. 8 is a schematic structural diagram of another embodiment of an air base station pan/tilt according to the present application. As shown in FIG. 8, the pan/tilt further includes a protective cover 5 and a protective layer 6.

In order to prevent the sky from being shaken by the direct impact of air flow, weather or birds, the pan/tilt can also be installed with a protective cover 5. The protective cover 5 is fixedly mounted on the hanging basket 1, for example, welded, riveted or bolted to the hanging basket to form a closed space, the ball joint 2, the pole 3 and the magnet 4 Located inside the enclosed space. The protective cover can isolate the external air flow, weather or bird disturbances, and is conducive to the stability of the gimbal.

The protective layer 6 is laterally fixedly mounted on the pole 3 or laterally fixed to the protective cover 5 , and the pole 3 passes through the protective layer 6 . When the protective layer 6 is laterally mounted on the pole 3, the pole 3 passes through the protective layer 6 and forms a rigid whole with the protective layer 6, as shown in FIG. 8a. The installation can be done by welding, riveting or bolting. When the protective layer 6 is laterally mounted on the protective cover 5, the pole 3 passes through the protective layer 6, and there is a gap between the protective layer 6 and the protective layer 6, as shown in FIG. 8b, and does not The protective layer 6 is formed integrally so that the pole 3 can be rotated to maintain the self-stabilization of the platform.

The protective layer 6 is a magnetic shielding material for forming a magnetic shielding layer between the magnet 4 and the base station device 7 fixedly mounted on the pole 3 to prevent mutual interaction between the magnetic field of the magnet and the signal of the antenna. interference.

It should be noted that the base station device 7 may be mounted on the pole 3 separately from the magnet 4, and the magnet 4 may be on the ground, the base station device 7 may be below, the magnet 4 may be on the bottom, the base station device 7 may be on, and the protective layer 6 may be installed. Between the magnet 4 and the base station device 7. In addition, in order to better maintain the balance of the pole itself, the magnet, the base station equipment and the protective layer can be symmetrically mounted with the poles as the central axis, respectively.

The embodiments of the present application described above are not intended to limit the scope of the application.

Claims

An aerial base station pan/tilt, characterized in that it comprises:

a ball joint (2), the outer casing of the ball joint (2) is fixedly mounted on the bottom of the gondola (1) of the air base station;

a pole (3), one end of the pole (3) is fixedly connected to the driving shaft of the ball joint (2), and the other end is a free end, and the base station device (7) is fixedly mounted on the pole ( 3) on;

a magnet (4), the magnet (4) being laterally fixedly mounted on the pole (3), perpendicular to the pole (3).
The air base station pan/tilt head according to claim 1, further comprising a protective cover (5) fixedly mounted on the hanging basket (1) to form a closed space, the ball The head gimbal (2), the pole (3) and the magnet (4) are located inside the enclosed space.
The aerial base station pan/tilt head according to claim 2, further comprising a protective layer (6), the protective layer (6) being laterally fixedly mounted on the pole (3), or laterally mounted on the pole On the protective cover (5), the holding rod (3) passes through the protective layer (6), and the protective layer (6) is a magnetic shielding material for mounting on the magnet (4) and fixedly A magnetic shielding layer is formed between the base station devices (7) on the poles (3).
The aerial base station pan/tilt head according to any one of claims 1 to 3, characterized in that the outer casing of the ball joint (2) is fixedly mounted to the groove (8) at the bottom of the gondola (1) A damping layer (9) is further disposed between the groove (8) and the outer casing of the ball joint (2), and the damping layer (9) is fixedly mounted to the groove (9) ) the inner wall.
The aerial base station pan/tilt head according to claim 4, characterized in that the damping layer (9) is an intelligent damping material.
The air base station pan/tilt head according to any one of claims 1 to 3, characterized in that an isolation layer (10) is further disposed between the magnet (4) and the pole (3), the isolation layer (10) One side is fixedly connected to the holding rod (3), the other side is fixedly connected to the magnet (4), and the separating layer (10) is a magnetic shielding material.