WO2018010252A1

WO2018010252A1 - Satellite antenna for use in moving carrier

Info

Publication number: WO2018010252A1
Application number: PCT/CN2016/095953
Authority: WO
Inventors: 王浙安; 周清庆; 肖芳汉; 周杰; 胡永强
Original assignee: 协同通信技术有限公司
Priority date: 2016-07-15
Filing date: 2016-08-19
Publication date: 2018-01-18
Also published as: CN105977616A; CN105977616B

Abstract

A satellite antenna for use in a moving carrier, comprising: a circuit control module (4), an azimuth rotation assembly (1), a pitch transmission assembly (2) and an antenna assembly (3) provided on the pitch transmission assembly. The azimuth rotation assembly (1) includes: an azimuth base (11), an azimuth platform (12), an azimuth bearing (13), an azimuth motor (14) and an azimuth synchronous transmission assembly (15). The azimuth synchronous transmission assembly (15) includes: a small azimuth synchronizing wheel (151) connected with the azimuth motor (14), and a large azimuth synchronizing wheel (152). The large azimuth synchronizing wheel (152) is fixed on the azimuth base (11), the azimuth motor (14) and the pitch transmission assembly (2) are fixed on the azimuth platform (12); one end or one side of the azimuth bearing (13) is fixed to the azimuth platform (12), while the other end or the other side thereof is connected with the large azimuth synchronizing wheel (152). The present invention is structurally simple, compact and easy to process, while also enjoys high assembling efficiency; the present invention is small in size and volume, light-weight, highly precise with respect to rotation, robust and reliable.

Description

Satellite antenna for mobile carriers

Technical field

[0001] The present invention belongs to the field of antennas, and in particular to a satellite antenna for a mobile carrier.

Background technique

[0002] Satellite communication systems have been widely used in various fields due to their large coverage area, large communication capacity, and flexibility. "Mobile" is an abbreviation of "mobile earth station communication system"; The antenna system has automatic, fast and accurate satellite tracking function, which is installed in the appropriate position of the mobile carrier to ensure that the antenna beam maintains accurate pointing to the satellite during the movement of the carrier; through the mobile communication, vehicles, ships, aircraft, etc. The mobile carrier builds a platform for tracking satellites during the movement, and can continuously transmit various information such as voice, data and images, especially suitable for remote communication support, emergency communication, disaster site communication, real news/live. The multimedia communication occasions under various conditions such as acquisition are a major breakthrough in the field of communication, and have extremely broad development prospects in both military and civilian fields.

[0003] At present, most of the moving antenna systems are mechanical tracking antennas, which are generally composed of an azimuth rotating component, a pitching component, and a planar antenna component. The structure of the azimuth rotating component is complicated, the machining of the parts is difficult, the parts are complex in form, and the specific structure is required. The assembly efficiency is low, the weight is large, the inertia is large, and it is difficult to ensure a good tracking state. The rotation precision is poor, and the signal is prone to differential damage; The rotating platform has a large space and the core components cannot be installed in the base. The planar antenna assembly is processed by plastic material, and the surface is coated with a metal layer. Then, the plastic plate is combined and fixed into a sub-array antenna by screws; the microwave frequency band antenna plate has high requirements on processing precision, and the antenna plate size is large, and direct processing is difficult. Guaranteed accuracy and cost.

technical problem

The technical problem to be solved by the present invention is to provide a satellite antenna which can be used for a mobile carrier, which is simple in structure, compact, easy to process, high in assembly efficiency, small in space size, light in weight, high in rotation accuracy, and robust and reliable.

Problem solution

Technical solution

[0005] In order to solve the above technical problem, the technical solution adopted by the present invention is: [0006] A satellite antenna for a mobile carrier, comprising: a circuit control module, an azimuth rotation component, a pitch transmission component, and an antenna component disposed on the pitch transmission component; the azimuth rotation component includes an azimuth base, an azimuth platform, an azimuth bearing, an azimuth motor, and An azimuth synchronous transmission assembly; the azimuth synchronous transmission assembly includes an azimuth small synchronous wheel coupled to an output shaft of the azimuth motor; and an azimuth large synchronous wheel coupled to the azimuth small synchronous wheel, the azimuth large synchronous wheel is fixed to the azimuth base The azimuth bearing is coupled to the azimuth large synchronous wheel, the azimuth platform is fixed to the azimuth bearing, and the azimuth motor and the pitch transmission component are both fixed on the azimuth platform.

[0007] Further, the azimuth platform is fixed on the bearing upper retaining ring of the azimuth bearing, and the azimuth large synchronizing wheel is connected with the bearing lower retaining ring of the azimuth bearing.

[0008] Further, the azimuth bearing is a four-point contact ball bearing, and an upper retaining ring of the inner ring of the bearing of the four-point contact ball bearing is fixed to the azimuth platform, and a lower retaining ring of the outer ring of the bearing and the azimuth Large sync wheel connection.

[0009] Further, a weight block disposed on the azimuth platform is further included.

[0010] Further, a receiving space is formed between the azimuth base, the azimuth large synchronous wheel, the azimuth bearing and the azimuth platform, and the receiving space is provided with a conductive slip for connecting a cable of a satellite antenna. Ring

[0011] Further, the pitch transmission assembly includes a column disposed on the azimuth platform, a U-shaped beam fixedly coupled to the column, and pitches respectively disposed on opposite ends of the U-beam A synchronous transmission mechanism and a rotation limiting mechanism capable of limiting the pitch rotation angle of the antenna assembly to a range of 0-90.

[0012] Further, the upright column and/or the U-shaped beam adopts an integrally formed hollow structure or a hollow structure assembled from a plate material.

[0013] Further, the hollow column assembled from the plate comprises a horizontally disposed column bottom plate, two opposite column side plates and two columns connecting the column side plates and perpendicular to the column bottom plate a lower end of the column side plate is perpendicular to the bottom plate of the column, the upper end is extended to protrude from the column back plate, and the side end of the column protruding from the column back plate is inclined end, and the horizontal plane Keep between less than 90. a tilting angle; two pillar reinforcing plates are disposed between the inclined ends of the side plates of the two columns, and the two pillar reinforcing plates are respectively a first pillar reinforcing plate and a seat located away from a side of the pillar backing plate a second column reinforcing plate on a side of the column back plate, and an end of the two column reinforcing plates far from the column bottom plate is extended to protrude from the side plate of the column, and the column reinforcing plate end protruding from the side plate of the column is U-beam fixed end; The u-beam is fixed between the fixed ends of the u-beams of the two pillar reinforcing plates.

[0014] Further, both sides of the pillar reinforcing plate overlap with the pillar side panel, and the pitch transmission assembly further includes a fixing member, the fixing member passes through the two pillar reinforcing plates and the U A beam is formed, and the U-beam is fixed to the column.

[0015] Further, the U-beam fixed end of the first pillar reinforcing plate is a pin extending from the pillar reinforcing plate, and the pin extends into the U-shaped beam.

[0016] Further, the hollow U-shaped beam assembled from the sheet material comprises two side beams and a beam connecting the two side beams, and the bending portion between the side beam and the beam is provided a beam reinforcing plate connecting the side sill and the beam; two of the side sills are provided with an antenna assembly bearing seat for fixing the antenna assembly, and a connection between the centers of the two antenna assembly bearing seats and the beam The center line is parallel, and a motor mounting plate is also disposed on the side beam.

Further, the pitch synchronization transmission mechanism includes a pitch motor, a pitch small synchronizing wheel connected to an output shaft of the pitch motor, and a pitch large synchronizing wheel connected to the pitch small synchronizing wheel.

[0018] Further, the antenna component is disposed on a center line of a rotation axis of the pitching large synchronous wheel.

[0019] Further, the antenna assembly includes an antenna support fixed on the pitching large synchronous wheel, and a parabolic reflecting surface, a secondary reflecting surface, a waveguide, a deep groove ball bearing, and a driving device disposed on the antenna support. a waveguide transmitting 360° omnidirectional polarization transmission mechanism and a polarization motor capable of driving the polarization transmission mechanism; a center line of the deep groove ball bearing coincides with a center line of the parabolic reflection surface, One end of the waveguide is fixed to the polarization transmission mechanism, and the other end extends through the deep groove ball bearing into the parabolic reflection surface and faces the secondary reflection surface.

[0020] Further, the polarization transmission mechanism includes a polarization motor, a polarization pinion coupled to an output shaft of the polarization motor, and a polarization bull gear coupled to the polarization pinion; The large gear is fixed to the antenna support and/or the parabolic reflector, the polarized motor is fixed to the waveguide, and the deep groove ball bearing is fixed in the polarized gear.

Advantageous effects of the invention

Beneficial effect

[0021] The beneficial effects of the satellite antenna that can be used for the mobile carrier provided by the present invention are:

[0022] The azimuth bearing of the satellite antenna is fixed to the azimuth platform, and is connected with the azimuth large synchronous wheel, and is installed by The azimuth motor on the azimuth platform drives the small azimuth synchronous wheel, the small azimuth synchronous wheel and the azimuth large synchronous wheel transmission. Under the reaction force of the large azimuth synchronous wheel, the 360° omnidirectional rotation of the azimuth platform is realized, and the structure is simple, compact and easy to process. Small space size, light weight, high assembly efficiency, stable and reliable, high rotation precision; [0023] Azimuth rotation assembly, pitch transmission assembly and antenna assembly settings, the azimuth rotation of the same can be arbitrarily pitch and polarization rotation, Three-axis independent rotation, high rotation efficiency and high rotation precision.

Brief description of the drawing

DRAWINGS

1 is a schematic structural diagram of a satellite antenna for a mobile carrier according to an embodiment of the present invention;

2 is a schematic structural diagram of an azimuth rotation assembly according to an embodiment of the present invention;

3 is a schematic structural diagram of connecting an antenna assembly on a pitch transmission component according to an embodiment of the present invention;

4 is a schematic structural view of a column according to an embodiment of the present invention;

5 is a schematic structural diagram of a U-shaped beam according to an embodiment of the present invention;

6 is a schematic structural diagram of an antenna assembly according to an embodiment of the present invention;

[0030] wherein, 1-azimuth rotating assembly, 11-azimuth base, 12-azimuth platform, 13-azimuth bearing, upper retaining ring of 131-bearing inner ring, lower retaining ring of 132-bearing outer ring, 14-azimuth motor , 15-azimuth synchronous transmission assembly, 151-azimuth small synchronous wheel, 152-azimuth large synchronous wheel, 153-azimuth timing belt, 2-pitch transmission assembly, 21-column, 211-column bottom plate, 212-column side plate, 213 - Column back plate, 214-first column reinforcement plate, 215 - second column reinforcement plate, 216-U beam fixed end, 22-U beam, 221-side beam, 222-beam, 223-beam reinforcement plate, 224-Antenna Assembly Housing, 225-Motor Mounting Plate, 23-Pitch Synchronous Transmission, 231-Pitch Motor, 232-Pitch Small Synchronous Wheel, 233-Pitch Large Synchronous Wheel, 234-Pitch Timing Belt, 24-Rotation Limit Mechanism, 25-fixture, 3-antenna assembly, 31-antenna support, 32-parabolic reflector, 33-side reflector, -34 waveguide, 35-deep groove ball bearing, 36-polarized transmission, 361- Polarized pinion, 362-polarized bull gear, 37-polarized motor, 4-circuit control module, 5-conductor slip ring 6- counterweight, the tensioning wheel 7-, 8- duplexer, 9-LNB and 10-BUC.

Embodiments of the invention

[0031] As shown in FIG. 1-2, a satellite antenna for a mobile carrier provided by an embodiment of the present invention includes a circuit control module 4, an azimuth rotation component 1, a pitch transmission component 2, and an antenna disposed on the pitch transmission component 2. Component 3; The azimuth rotation assembly 1 includes an azimuth base 11, an azimuth platform 12, an azimuth bearing 13, an azimuth motor 14 and an azimuth synchronous transmission assembly 15; the azimuth synchronous transmission assembly 15 includes an azimuth small synchronizing wheel 151 coupled to an output shaft of the azimuth motor 14 and The azimuth large synchronous wheel 151 is connected to the azimuth large synchronous wheel 152, the azimuth large synchronous wheel 152 is fixed on the azimuth base 11, the azimuth bearing 13 is connected with the azimuth large synchronous wheel 152, and the azimuth platform 12 is fixed on the azimuth bearing 13, the azimuth motor 14 Both the pitch and drive assembly 2 are fixed to the azimuth platform 12. The satellite antenna azimuth bearing is fixed to the azimuth platform and connected with the azimuth large synchronous wheel. The azimuth motor mounted on the azimuth platform drives the small azimuth synchronous wheel, the small azimuth synchronous wheel and the azimuth large synchronous wheel drive, and the large azimuth synchronous wheel Under the reaction force, the 360° omnidirectional rotation of the azimuth platform is realized; the structure is simple, compact, easy to process, small in space size, light in weight, high in assembly efficiency, stable and reliable, and high in rotation precision.

Further, in the embodiment of the present invention, the azimuth platform 12 is fixed on the bearing upper retaining ring of the azimuth bearing, and the large azimuth synchronous wheel is connected with the bearing lower retaining ring of the azimuth bearing; the structure is simple, compact, and easy to assemble. Preferably, the azimuth platform 12 is fixed on the upper retaining ring 131 of the inner ring of the bearing of the azimuth bearing, and the lower retaining ring 132 of the bearing outer ring of the large azimuth synchronous wheel and the bearing of the bearing is simpler and more compact, and is easy to process and assemble.

[0033] wherein, the transmission connection between the azimuth small synchronous wheel 151 and the azimuth large synchronous wheel 152 can be realized by gear transmission, belt transmission or chain transmission; preferably, the azimuth small synchronous wheel 151 and the azimuth large synchronous wheel 152 pass The azimuth timing belt 153 realizes a transmission connection, as shown in Fig. 2, to ensure better rotation accuracy.

Further, in the embodiment of the present invention, the transmission ratio of the azimuth small synchronizing wheel 151 and the azimuth large synchronizing wheel 152 is 4:1, and the precision transmission can improve the rotation precision. Preferably, the number of teeth of the small azimuth synchronous wheel 151 is 25, and the number of teeth of the large azimuth synchronous wheel 152 is 100, which is easy to process.

[0035] Further, in the embodiment of the present invention, the azimuth bearing 13 is a four-point contact ball bearing, and the bearing upper retaining ring of the four-point contact ball bearing is fixed with the azimuth platform 12, and the bearing lower retaining ring is synchronized with the azimuth. The wheel 152 is connected; the upper retaining ring 131 of the inner ring of the bearing can be fixed to the azimuth platform 12, and the lower retaining ring 132 of the outer ring of the bearing is connected to the large azimuth synchronous wheel 152. The four-point contact ball bearing with large inner diameter, small outer diameter, thin thickness and light weight is used as the azimuth bearing. The upper retaining ring of the bearing is fixed with the azimuth platform, and the lower retaining ring of the bearing is connected with the large azimuth synchronous wheel, and is mounted on the azimuth platform. The azimuth motor, the azimuth small synchronous wheel, the azimuth small synchronous wheel and the azimuth large synchronous wheel drive, realizes 360° omnidirectional rotation of the azimuth platform under the reaction force of the large azimuth synchronous wheel, the structure is simple, compact, easy to process, small in space size , light weight, high assembly efficiency, stable and reliable, high rotation precision. [0036] Further, as shown in FIG. 1, in the embodiment of the present invention, the circuit control module 4 is disposed on the azimuth platform 12. The structure is simple and compact, the space is rationally utilized, the wiring is convenient, and the assembly is easy.

[0037] Further, as shown in FIG. 1, the satellite antenna for a mobile carrier provided by the embodiment of the present invention further includes a weight 6 disposed on the azimuth platform 12, which can balance the force on the azimuth platform 12. Ensure that the center of gravity of the azimuth platform is stable and prevent overturning stress.

[0038] Further, as shown in FIG. 1, in the embodiment of the present invention, an accommodation space is formed between the azimuth base 11, the azimuth large synchronous wheel 152, the azimuth bearing 13 and the azimuth platform 12, and the accommodation space is The conductive slip ring 5 is provided with a cable for connecting the satellite antenna; the satellite antenna of the structure is simple and compact, and is easy to assemble and has a small space size. In particular, the four-point contact ball bearing 吋 has a larger accommodation space, and the conductive slip ring 5 can be provided. Even the core network element module can be provided, the assembly is simpler, the satellite antenna volume is reduced, the adaptability is reduced, the weight is reduced, and the weight is increased. Rotation accuracy.

[0039] Further, as shown in FIG. 1 and FIG. 3, in the embodiment of the present invention, the pitch transmission assembly 2 includes a column 21 disposed on the azimuth platform 12, a U-shaped beam 22 fixedly coupled to the column 21, and a pitch synchronizing transmission mechanism 23 respectively disposed at opposite ends of the U-shaped beam 22 and a rotation limiting mechanism 24 capable of limiting the pitch rotation angle of the antenna assembly 3 to a range of 0-9 0°; one end of the U-shaped beam The transmission mechanism is installed, and the rotation limit mechanism is installed at the other end to realize the pitch transmission, which can limit the pitch rotation angle of the antenna assembly, ensure the rotation of the antenna assembly in the range of 0-90°, ensure the rotation precision, and support the antenna assembly. Solid and reliable. The column and the U-beam can be fixed by a mechanical connection such as screw fixing, welding, riveting, etc., as a component support carrier, and can withstand the running torque in the whole machine.

[0040] Further, as shown in FIG. 4 and FIG. 5, in the embodiment of the present invention, the pillar 21 and/or the U-beam 22 adopts an integrally formed hollow structure or a hollow structure assembled from a plate; The hollow structure facilitates the provision of wiring grooves for the overall wiring of the satellite antenna, and has a simple and stable structure, is light in weight, is easy to assemble, and beautifies the appearance. Preferably, the column and/or the U-beam are machined to process high-strength plates (such as 6061 aluminum plates), and then the plates are fixed by screws, welding, riveting, etc. to form a hollow structure, and the operation is stable and reliable.

[0041] Further, as shown in FIG. 4, in the embodiment of the present invention, the hollow column 21 assembled from the plate material comprises a horizontally disposed column bottom plate 211, two opposite column side plates 212 and a connection therebetween. The two column side plates 212 are perpendicular to the column back plate 213 of the column bottom plate 211; the lower end of the column side plate 212 is perpendicular to the column bottom plate 211, the upper end is extended to protrude from the column back plate 213, and the column is protruded from the column back plate 213. Column side The upper end of the plate 212 is an inclined end that is kept less than 90 from the horizontal. The inclined angle of the two pillars is provided between the inclined ends of the two side pillars 212. The two pillar stiffeners are respectively the first pillar stiffener 214 on the side away from the pillar back panel 213 and the pillar back The second pillar reinforcing plate 215 on the side of the plate 213, the one end of the two pillar reinforcing plates away from the pillar bottom plate 211 is extended to protrude from the pillar side plate 212, and the pillar reinforcing plate end protruding from the pillar side plate 212 is The U-shaped beam fixed end 216; the U-shaped beam 22 is fixed between the U-beam fixed ends 216 of the two column reinforcing plates; the structure column is arranged to facilitate the long-lasting stability of the U-shaped beam, the force is balanced, and the support is fixed thereon. Structure (such as pitch sync drive, antenna assembly, etc.). Preferably, the U-beam fixed end 216 of the first pillar reinforcing plate 214 is a pin extending from the pillar reinforcing plate, and the pin extends into the U-shaped beam 22 to facilitate long-lasting and stable support of the structure on the U-shaped beam, and the overall structure is further improved. For stability.

[0042] Further, as shown in FIG. 1 and FIG. 4, in the embodiment of the present invention, both sides of the pillar reinforcing plate overlap with the pillar side panel 212, and the pitch transmission assembly 2 further includes a fixing member 25, The fixing member 25 passes through the two column reinforcing plates and the U-shaped beam 22, and the U-shaped beam 22 is fixed on the column 21, and the fixing member can be a screw; the column of the structure, the stress of the U-shaped beam can be strengthened by the two columns The plate is quickly dispersed to the side plate of the column, and the force is more balanced, which is convenient for long-lasting and stable support of the structure on the U-shaped beam, and the overall structure is more stable.

[0043] Further, as shown in FIG. 5, the hollow U-shaped beam 22 assembled from the sheet material includes two side beams 221 and a beam 222 connecting the side beams 221, and the bending between the side beams 221 and the beam 222 There is a beam reinforcing plate 223 connecting the side beam 221 and the beam 222; the two side beams 221 are respectively provided with an antenna assembly bearing seat 224 for accommodating the antenna assembly 3, and the center of the two antenna assembly bearing seats 224 Parallel to the center line of the beam 222, the side beam 221 is further provided with a motor mounting plate 225 for mounting the pitch motor, which is more balanced, and is convenient for supporting the structure on the U-shaped beam for a long time, and the overall structure is more stable.

[0044] Further, as shown in FIG. 1 and FIG. 3, in the embodiment of the present invention, the pitch synchronization transmission mechanism 23 includes a pitch motor 231, a pitch small synchronization wheel 232 connected to the output shaft of the pitch motor 231, and the like. The pitching large synchronizing wheel 232 is connected to the pitching large synchronizing wheel 233; the pitching torque is transmitted to the pitching large synchronizing wheel by the pitching small synchronizing wheel, thereby realizing a pitch rotation function of 0-90°. Wherein, the transmission connection between the pitch small synchronous wheel 232 and the pitch large synchronous wheel 233 can be realized by gear transmission, belt transmission or chain transmission; preferably, the pitch synchronization belt is passed between the pitch small synchronization wheel 232 and the pitch large synchronization wheel 233. 234 achieves drive connection for better rotation accuracy. Preferably, the antenna assembly 3 is disposed on the center line of the rotating shaft of the pitching large synchronous wheel to make the overall structure more stable; preferably, the pitching large synchronous wheel is a full circle structure, and is suitable for the center axis of the synchronous wheel. The angle between the wiring and the horizontal plane is relatively small, so that the antenna assembly is concentrated in a small space to perform the pitching motion.

Further, in the embodiment of the present invention, the pitching small synchronizing wheel 232 and the pitching large synchronizing wheel 233 have a transmission ratio of 8:1, and the precision transmission can improve the rotation accuracy. Preferably, the number of teeth of the pitch small synchronizing wheel 232 is 25, and the number of teeth of the pitching large synchronizing wheel 233 is 200, which is easy to process.

Further, as shown in FIGS. 1 and 6, in the embodiment of the present invention, the antenna assembly 3 includes an antenna support 31 fixed to the pitch large synchronous wheel 233, and a parabolic reflection provided on the antenna support 31. Surface 32, sub-reflecting surface 33, waveguide 34, deep groove ball bearing 35, polarization drive mechanism 36 capable of driving waveguide 34 for 360° omnidirectional rotation, and polarization motor 37 capable of driving polarization drive mechanism 36; The center line of the groove ball bearing 35 coincides with the center line of the parabolic reflecting surface 32. One end of the waveguide 34 is fixed to the polarization transmission mechanism 36, and the other end extends through the deep groove ball bearing 35 into the parabolic reflecting surface 32 and is reflected by the sub-reflection. Face 33 is right. The deep groove ball bearing and the waveguide are installed at the center hole position of the parabolic reflecting surface, the deep groove ball bearing is provided with a polarized large gear, and the polarized large gear is fixed with the antenna support (or the parabolic reflecting surface), and the polarized pinion passes through the pole. The motor and the polarized gear mesh drive, and the polarized motor drives the polarized pinion. Under the reaction force of the large gear, the polarized pinion can drive the waveguide to rotate 360° in all directions, and the structure is simple and stable and reliable.

Further, as shown in FIGS. 1 and 6, in the embodiment of the present invention, the polarization transmission mechanism 36 includes a polarization pinion 361 connected to the output shaft of the polarization motor 37 and is small in polarization. The gear 361 is connected to the polarization large gear 362; the polarization large gear 362 is fixed to the antenna support 31 and/or the parabolic reflection surface 32, the polarization motor 37 is fixed to the waveguide 34, and the deep groove ball bearing 35 is fixed to the polarization large gear Within 362. Wherein, the transmission connection between the polarization pinion 36 1 and the polarization large gear 362 can be realized by gear transmission, belt transmission or chain transmission; preferably, the polarization pinion 361 and the polarization large gear 362 pass polarization The meshing drive realizes the transmission connection to ensure better rotation accuracy.

[0048] Further, as shown in FIG. 1, in the embodiment of the present invention, it is preferable that the antenna assembly includes a duplexer 8, an LNB 9 (ie, an up-converter), and a BUC 10 (ie, a down-converter) are disposed on the waveguide 34. Above, the satellite signal transceiving system composed of the waveguide 34, the duplexer 8, the LNB9 and the BUC10 realizes the working operation by the polarization rotating mechanism and the circuit control.

Further, in the embodiment of the present invention, the polarization pinion 361 and the polarization large gear 362 have a gear ratio of 4:1, and the precision transmission can improve the rotation precision. Preferably, the number of teeth of the polarization pinion 361 is 25, polarization The large gear 362 has a number of teeth of 100 and is easy to process.

[0050] wherein the azimuth motor 14, the pitch motor 231, and the polarization motor 37 may be servo motors or stepper motors. The azimuth timing belt 153, the pitch timing belt 234 and the polarization timing belt (if the polarization pinion 361 and the polarization large gear 36 2 are driven by a polarization timing belt) can be tensioned by the tensioning pulley 7 (Fig. 1, Figure 3 shows the structure in which the pitch belt 234 is tensioned by the tensioning pulley 7.

The above is only the preferred embodiment of the present invention, and is not intended to limit the present invention. Any modifications, equivalents, and improvements made within the spirit and scope of the present invention should be included in the present invention. Within the scope of protection of the invention.

Claims

Claim

A satellite antenna for a mobile carrier, comprising: a circuit control module, an azimuth rotation component, a pitch transmission component, and an antenna assembly disposed on the pitch transmission component; the azimuth rotation component includes an azimuth bearing, an azimuth motor, and an azimuth synchronous transmission component, The azimuth synchronous transmission assembly includes an azimuth small synchronous wheel coupled to an output shaft of the azimuth motor and an azimuth large synchronous wheel coupled to the azimuth small synchronous wheel, wherein: the azimuth rotation assembly further includes an azimuth base And an azimuth platform, the azimuth large synchronous wheel is fixed on the azimuth base, the azimuth bearing is connected to the azimuth large synchronous wheel, the azimuth platform is fixed on the azimuth bearing, the azimuth motor and the The pitch drive assemblies are each fixed to the azimuth platform.

The satellite antenna for a mobile carrier according to claim 1, wherein: said azimuth platform is fixed to a bearing upper retaining ring of said azimuth bearing, said azimuth large synchronous wheel and said bearing of said azimuth bearing The retaining ring is connected.

The satellite antenna for a mobile carrier according to claim 1, wherein: the azimuth bearing is a four-point contact ball bearing, and an upper retaining ring of the bearing inner ring of the four-point contact ball bearing and the azimuth platform The fixed, the lower retaining ring of the outer ring of the bearing and the large azimuth synchronous wheel are connected to the satellite antenna for a mobile carrier according to claim 1, further comprising: a weight arranged on the azimuth platform.

A satellite antenna for a mobile carrier according to claim 3, wherein: said azimuth base, said azimuth large synchronizing wheel, said azimuth bearing and said azimuth platform form an accommodation space, and said accommodation space Conductive slip ring with cable for connecting satellite antenna

[Claim 6] The satellite antenna for a mobile carrier according to claim 1, wherein: the pitch transmission component comprises: a column disposed on the azimuth platform, and a U-shaped fixed connection with the column And a pitch synchronous transmission mechanism respectively disposed on opposite ends of the U-shaped beam and a rotation limiting mechanism capable of limiting a pitch rotation angle of the antenna assembly within a range of 0-90. The satellite antenna for a mobile carrier according to claim 6, wherein: the column and/or the U-beam are formed of an integrally formed hollow structure or a hollow structure assembled from a plate material.

The satellite antenna for a mobile carrier according to claim 7, wherein: the column is a hollow structure assembled from a plate material, and the column comprises a horizontally arranged column bottom plate and two opposite column sides disposed opposite to each other. a plate and a column back plate connecting the two side plates of the column and perpendicular to the bottom plate of the column; the lower end of the side plate of the column is perpendicular to the bottom plate of the column, and the upper end is extended to protrude from the back plate of the column, and the The side end of the column protruding from the back plate of the column is an inclined end and is kept less than 90 from the horizontal plane. a tilting angle; two pillar reinforcing plates are disposed between the inclined ends of the side plates of the two columns, and the two pillar reinforcing plates are respectively a first pillar reinforcing plate and a seat located away from a side of the pillar backing plate a second column reinforcing plate on a side of the column back plate, and an end of the two column reinforcing plates far from the column bottom plate is extended to protrude from the side plate of the column, and the column reinforcing plate end protruding from the side plate of the column is a U-beam fixed end; the U-beam is fixed between the fixed ends of the U-beams of the two pillar reinforcing plates.

The satellite antenna for a mobile carrier according to claim 8, wherein: both sides of the pillar reinforcing plate overlap with the pillar side panel, and the pitch transmission assembly further includes a fixing member, the fixing member The U-beam is fixed to the upright by passing through the two of the pillar stiffeners and the U-beam.

The satellite antenna for a mobile carrier according to claim 9, wherein: the U-beam fixed end of the first pillar reinforcing plate is a pin extending from the pillar reinforcing plate, and the pin extends into the Said inside the U-beam.

A satellite antenna for a mobile carrier according to claim 7, wherein: said hollow U-shaped beam assembled from a sheet material comprises side beams and a beam connecting said side beams, said side beams And a beam reinforcing plate connecting the side beam and the beam; and the two side rails are respectively provided with an antenna assembly bearing seat for fixing the antenna assembly, and the two antennas The center of the component housing is connected to the centerline of the beam A satellite antenna for a mobile carrier according to any one of claims 6 to 11, wherein: the pitch synchronous transmission mechanism includes a pitch motor, a pitching small synchronizing wheel connected to an output shaft of the pitch motor, and A pitching large synchronous wheel connected to the pitching small synchronous wheel transmission. The satellite antenna for a mobile carrier according to claim 12, wherein: the antenna assembly is disposed at a center line of a rotation axis of the pitching large synchronous wheel. on.

The satellite antenna for a mobile carrier according to claim 12, wherein: said antenna assembly comprises an antenna support fixed to said pitch large synchronous wheel, and a parabolic reflecting surface and a secondary reflection provided on said antenna support. a surface, a waveguide, a deep groove ball bearing, a polarization transmission mechanism capable of driving the waveguide for 360° omnidirectional rotation, and a polarization motor capable of driving the polarization transmission mechanism; a center line of the deep groove ball bearing Coincident with a center line of the parabolic reflecting surface, one end of the waveguide is fixed to the polarization transmission mechanism, and the other end extends through the deep groove ball bearing into the parabolic reflecting surface and is positive with the sub-reflecting surface Correct.

A satellite antenna for a mobile carrier according to claim 14, wherein: said polarization transmission mechanism comprises a polarization motor, a polarization pinion coupled to an output shaft of said polarization motor, and said polarization a pinion gear connected to the polarized large gear; the polarized gear is fixed to the antenna support and/or the parabolic reflector, the polarized motor is fixed to the waveguide, and the deep groove ball bearing is fixed In the polarized gear.