Low profile large load bearing radar antenna pedestal

Abstract

The application provides a low-profile large-load radar antenna pedestal, and relates to the technical field of radar antenna pedestals.The antenna pedestal connects an inner ring and an outer ring through a first bearing nesting bearing, is designed to be flat, fully utilizes radial space, compresses the axial space of rotation as much as possible, and reduces the height of the upper load;the outer ring is connected with the upper load through a topologically optimized connecting claw, effectively reduces the influence of instantaneous impact potential energy, and solves the problems of large overturning moment of the antenna pedestal and weak impact load resistance;the antenna pedestal uses a flexible hydraulic motor as a power source of a driving unit, effectively prevents damage to rotating gears and other hardware under impact conditions;the moving ring of the bus ring is connected with the upper load through a flexible pull rod, which ensures that the moving ring of the bus ring can rotate with the rotation of the upper load, avoids the entanglement of lines between the upper load and the radar pedestal, and prevents the hard impact on the upper load from being transmitted to the bus ring to cause the bus ring to be stuck.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of radar antenna pedestal, in particular to a low-profile large-load-carrying radar antenna pedestal. BACKGROUND

[0002] The antenna pedestal plays a role of "connecting upper and lower" in the radar system, is used for stably supporting the upper-mounted antenna under various working conditions such as transportation and work, bears the signal and energy transmission of the whole radar system, and is responsible for adjusting the azimuth attitude of the antenna array surface during work.

[0003] The current antenna pedestal adopts a structure form of "turntable + rotary support + base" or "turntable + double-bearing vertical shaft + base". The two types of antenna pedestals have large axial dimensions and high support points, causing a large overturning moment arm of the upper-mounted antenna relative to the support surface, and the structural characteristics cannot eliminate the instantaneous large impact potential, which is not conducive to the upper-mounted antenna working while marching, and also affects the motion characteristics of the carrier aircraft for the airborne radar. Reducing the axial dimension of the antenna pedestal and reducing the impact potential through structural optimization are key measures to solve the above problems. SUMMARY

[0004] In view of the deficiencies of the prior art, the present application provides a low-profile large-load-carrying radar antenna pedestal, which solves the problems of large overturning moment of the antenna pedestal and weak impact load resistance.

[0005] To achieve the above object, the present application is realized by the following technical scheme:

[0006] A low-profile large-load-carrying radar antenna pedestal, the antenna pedestal comprising: an inner ring, an outer ring, a connecting claw and a driving unit;

[0007] The inner ring and the outer ring are connected through a first bearing nested bearing, and a gear ring is installed on the outer ring.

[0008] The driving unit is fixedly installed on the inner ring, and the output gear of the driving unit is engaged with the gear ring.

[0009] The outer ring is connected with the upper load through a plurality of connecting claws, and the inner ring is fixedly connected with a radar base.

[0010] The inner ring, the outer ring, the first bearing and the gear ring are coaxially arranged.

[0011] Preferably, the first bearing adopts a four-point contact ball bearing with full ball.

[0012] Preferably, the outer wall of the inner ring is provided with a first limiting ring extending outward, a pre-tightening pressing plate is installed on the bottom end of the inner ring through a high-strength bolt, and the first limiting ring cooperates with the pre-tightening pressing plate to clamp the inner ring of the first bearing.

[0013] The inner wall of the outer ring is provided with a second limiting ring extending inwardly, the gear ring is installed on the outer ring through high-strength bolts, and the second limiting ring clamps the outer ring of the first bearing by cooperating with the gear ring.

[0014] Preferably, the bottom end of the outer ring and the pre-tightening pressing plate are sealed by a rotary oil seal; and the top end of the outer ring and the inner ring are sealed by a labyrinth seal.

[0015] Preferably, the connecting claw comprises a shear bushing and a pair of supporting claws.

[0016] The tips of the pair of supporting claws are fixed to the top and bottom of the outer ring through hinge holes and bolts, respectively, and the claw roots are connected through the shear bushing, and the inner hole of the shear bushing is an interface for connecting the upper load.

[0017] Preferably, the driving unit comprises a hydraulic motor and a speed reducer.

[0018] The hydraulic motor is in driving connection with the speed reducer, and the output gear is installed on the output shaft of the speed reducer.

[0019] Preferably, an angle measuring device is installed on the inner ring, and the angle measuring device comprises a double-gear and a multi-turn encoder.

[0020] The double-gear is installed on the inner ring through a second bearing, so that the double-gear meshes with the gear ring; and the multi-turn encoder is installed on the inner ring, and the input shaft of the multi-turn encoder is connected with the double-gear through a shaft coupling.

[0021] Preferably, the gear ring and the output gear have an infinite small number ratio of teeth; and the gear ring and the double-gear have a 2 N N is a positive integer.

[0022] Preferably, a valve group is installed on the inner side of the inner ring, and the cables and pipelines of the driving unit and the angle measuring device are connected with external equipment through the valve group.

[0023] Preferably, the antenna seat further comprises a busbar, and the cables, pipelines, optical fibers and other lines between the upper load and the radar base are communicated through the busbar; the fixed ring of the busbar is fixedly connected with the inner ring through a support, and the movable ring of the busbar is connected with the upper load through a plurality of flexible pull rods.

[0024] The flexible pull rod comprises a first rod end joint bearing, a first pull rod, a hinge shaft, a second pull rod, a second rod end joint bearing and a transition mounting plate.

[0025] One end of the first pull rod is connected with the movable ring of the busbar through the first rod end joint bearing, the other end of the first pull rod is connected with one end of the second pull rod through the hinge shaft, the other end of the second pull rod is connected with the transition mounting plate through the second rod end joint bearing, and the transition mounting plate is fixedly connected with the upper load.

[0026] The application provides a low-profile large-load-carrying radar antenna pedestal.

[0027] Beneficial effects:

[0028] In the application, the antenna pedestal connects the inner ring and the outer ring through a first bearing nested bearing, performs a flattening design, fully utilizes a radial space, compresses an axial space of rotation as much as possible, reduces the height of the upper load, connects the upper load through a topologically optimized connecting claw of the outer ring, effectively reduces the influence of instantaneous impact potential, solves the problems of large overturning moment of the antenna pedestal and weak impact load resistance, uses a flexible hydraulic motor as a power source of the driving unit of the antenna pedestal, effectively prevents damage to rotating gears and other hardware under impact conditions, connects the moving ring of the bus ring and the upper load through a flexible pull rod, ensures that the moving ring of the bus ring can rotate with the rotation of the upper load, avoids entanglement of lines between the upper load and the radar pedestal, and prevents hard impact on the upper load from being transmitted to the bus ring to cause the bus ring to be stuck. BRIEF DESCRIPTION OF DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description only constitute some embodiments of the application, and for those skilled in the art, other drawings can also be obtained from these drawings without creative labor.

[0030] Figure 1 It is a structural schematic diagram of the antenna pedestal in the embodiment of the application.

[0031] Figure 2 It is a partial sectional view of the antenna pedestal at the driving unit in the embodiment of the application.

[0032] Figure 3 It is a partial sectional view of the antenna pedestal at the angle measuring device in the embodiment of the application.

[0033] Figure 4 It is Figure 2 It is an enlarged view of A in FIG. 8.

[0034] Figure 5 It is a topological optimization diagram of the supporting claw in the embodiment of the application.

[0035] Figure 6 It is a longitudinal partial sectional view of the antenna pedestal in the embodiment of the application.

[0036] The reference numerals in the figure are set as follows: inner ring 10, first bearing 11, first limiting ring 12, pre-tightening plate 13, rotary oil seal 14, outer ring 20, gear ring 21, second limiting ring 22, connecting claw 30, shear bushing 31, support claw 32, output gear 40, hydraulic motor 41, reducer 42, angle measuring device 50, double-plate gear 51, multi-turn encoder 52, second bearing 53, coupling 54, valve group 60, manifold ring 70, first rod end spherical bearing 71, first tie rod 72, hinge shaft 73, second tie rod 74, second rod end spherical bearing 75, transition mounting plate 76. Detailed Implementation

[0037] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention are described clearly and completely. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0038] This application provides a low-profile, high-load-bearing radar antenna mount, which solves the problems of large overturning moment and weak resistance to impact loads.

[0039] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0040] Example:

[0041] like Figures 1-3 As shown, the present invention provides a low-profile, high-load-bearing radar antenna mount, the antenna mount comprising: an inner ring 10, an outer ring 20, a connecting claw 30, and a driving unit;

[0042] The inner ring 10 and the outer ring 20 are connected by a first bearing 11 nested bearing, and a gear ring 21 is installed on the outer ring 20;

[0043] The drive unit is fixedly mounted on the inner ring 10 via a flange, and the output gear 40 of the drive unit meshes with the gear ring 21.

[0044] The outer ring 20 is connected to the upper load through multiple connecting claws 30, and the inner ring 10 is fixedly connected to the radar base.

[0045] The inner ring 10, outer ring 20, first bearing 11, and gear ring 21 are all coaxially arranged.

[0046] The first bearing 11 is a full complement four-point contact ball bearing, which improves its ability to withstand axial loads, radial loads and overturning moments caused by vibration and impact.

[0047] As shown in Figure 2 , Figure 3 , the outer wall of the inner ring 10 is provided with a first limiting ring 12 extending outward, and the bottom end of the inner ring 10 is provided with a pre-tightening plate 13 installed by high-strength bolts, and the first limiting ring 12 cooperates with the pre-tightening plate 13 to clamp the inner ring of the first bearing 11.

[0048] The inner wall of the outer ring 20 is provided with a second limiting ring 22 extending inward, and the gear ring 21 is installed on the outer ring 20 by high-strength bolts, and the second limiting ring 22 cooperates with the gear ring 21 to clamp the outer ring of the first bearing 11.

[0049] As shown in Figure 2 , Figure 3 , the bottom end of the outer ring 20 and the pre-tightening plate 13 are dynamically sealed by a rotary oil seal 14.

[0050] As shown in Figure 4 , the top end of the outer ring 20 and the inner ring 10 are sealed by a labyrinth seal.

[0051] As shown in Figure 1 , the connecting claw 30 includes a shear bush 31 and a pair of supporting claws 32.

[0052] The tips of the pair of supporting claws 32 are fixed to the top and bottom of the outer ring 20 by hinge holes and bolts, respectively, and the claw roots are connected by the shear bush 31, and the inner hole of the shear bush 31 is an interface for connecting the upper load.

[0053] As shown in Figure 5 , the supporting claw 32 serves as a force transmission structure for the upper load, and the configuration and unit configuration of the supporting claw 32 are optimized based on the force transmission topology.

[0054] As shown in Figure 1 , Figure 2 , the drive unit includes a hydraulic motor 41 and a speed reducer 42.

[0055] The hydraulic motor 41 is in transmission connection with the speed reducer 42, and an output gear 40 is installed on the output shaft of the speed reducer 42.

[0056] As shown in Figure 1 , Figure 3 , an angle measuring device 50 is installed on the inner ring 10, and the angle measuring device 50 includes a double-gear 51 and a multi-turn encoder 52.

[0057] The double-gear 51 is installed on the inner ring 10 through a second bearing 53, so that the double-gear 51 is in meshing engagement with the gear ring 21; the multi-turn encoder 52 is installed on the inner ring 10, and the input shaft of the multi-turn encoder 52 is connected with the double-gear 51 through a shaft coupling 54.

[0058] The tooth number ratio of the gear ring 21 and the output gear 40 is an infinitesimal number, effectively preventing the gear ring 21 and the output gear 40 from repeatedly wearing at the same position; the tooth number ratio of the gear ring 21 and the double-gear wheel 51 is 2 N , N is a positive integer, so that the angle measurement error of the angle measurement device 50 is equivalent to the angle measurement error of the antenna pedestal, which is reduced by 2 N times, thereby improving the angle measurement accuracy.

[0059] As shown in Figure 1 , the inner ring 10 is internally provided with a valve group 60, and the cables and pipelines of the driving unit and the angle measurement device 50 are connected with external equipment through the valve group 60.

[0060] As shown in Figures 1-3 , the inner ring 10 and the outer ring 20 are both hollow, and the inner wall of the inner ring 10 and the outer wall of the outer ring 20 are both provided with lightening holes.

[0061] As shown in Figure 1 , the driving unit is provided in two groups, and the two groups of driving units are completely identical in structure and symmetrically arranged, so that double driving or one standby use mode can be realized according to requirements.

[0062] As shown in Figure 6 , the antenna pedestal further comprises a bus ring 70.

[0063] The cables, pipelines, optical fibers and other lines between the upper load and the radar pedestal are all communicated through the bus ring 70;

[0064] The fixed ring of the bus ring 70 is fixedly connected with the inner ring 10 through a support, and the movable ring of the bus ring 70 is connected with the upper load through a plurality of flexible pull rods.

[0065] The flexible pull rod comprises a first rod end joint bearing 71, a first pull rod 72, a hinge shaft 73, a second pull rod 74, a second rod end joint bearing 75 and a transition mounting plate 76.

[0066] One end of the first pull rod 72 is connected with the movable ring of the bus ring 70 through the first rod end joint bearing 71, the other end of the first pull rod 72 is connected with one end of the second pull rod 74 through the hinge shaft 73, the other end of the second pull rod 74 is connected with the transition mounting plate 76 through the second rod end joint bearing 75, and the transition mounting plate 76 is fixedly connected with the upper load.

[0067] Compared with the prior art, the present application has the following beneficial effects:

[0068] 1. In this embodiment of the invention, the antenna mount connects the inner ring 10 and the outer ring 20 through a nested bearing of the first bearing 11, and adopts a flat design to make full use of the radial space, compress the axial space of rotation as much as possible, and reduce the height of the upper load; and the upper load is connected through the topology-optimized connecting claw 30 of the outer ring 20, which effectively reduces the influence of instantaneous impact potential energy and solves the problems of large overturning moment and weak impact load resistance of the antenna mount.

[0069] 2. In this embodiment of the invention, the antenna mount uses a flexible hydraulic motor 41 as the power source for the drive unit, which effectively prevents damage to rotating gears and other hardware under impact conditions.

[0070] 3. In this embodiment of the invention, in the antenna mount, the moving ring of the busbar 70 is connected to the upper load through a flexible tie rod. This ensures that the moving ring of the busbar 70 can rotate with the rotation of the upper load, avoiding entanglement of the wiring between the upper load and the radar base, and also prevents the hard impact on the upper load from being transmitted to the busbar 70, causing the busbar 70 to jam.

[0071] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0072] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A low-profile, high-load-bearing radar antenna mount, characterized in that, The antenna mount includes: an inner ring (10), an outer ring (20), a connecting claw (30), and a driving unit; The inner ring (10) and the outer ring (20) are connected by a first bearing (11) nested bearing, and a toothed ring (21) is installed on the outer ring (20). The drive unit is fixedly mounted on the inner ring (10), and the output gear (40) of the drive unit meshes with the gear ring (21); The outer ring (20) is connected to the upper load through multiple connecting claws (30), and the inner ring (10) is fixedly connected to the radar base; The inner ring (10), outer ring (20), first bearing (11) and gear ring (21) are all coaxially arranged; The first bearing (11) is a full-fill four-point contact ball bearing; The connecting claw (30) includes: a shear bushing (31) and a pair of support claws (32); The tips of the paired support claws (32) are fixed to the top and bottom of the outer ring (20) respectively by reamed hole bolts, and the claw roots are connected by shear bushings (31). The inner hole of the shear bushings (31) is the interface for connecting the load. The antenna mount also includes a bus ring (70); the cables, pipes, optical fibers and other lines between the upper load and the radar base are all connected through the bus ring (70); the stationary ring of the bus ring (70) is fixedly connected to the inner ring (10) through a bracket, and the moving ring of the bus ring (70) is connected to the upper load through several flexible tie rods. The flexible tie rod includes: a first rod end joint bearing (71), a first tie rod (72), a hinge shaft (73), a second tie rod (74), a second rod end joint bearing (75), and a transition mounting plate (76). One end of the first tie rod (72) is connected to the moving ring of the manifold (70) through the first rod end joint bearing (71), and the other end of the first tie rod (72) is connected to one end of the second tie rod (74) through the hinge shaft (73). The other end of the second tie rod (74) is connected to the transition mounting plate (76) through the second rod end joint bearing (75). The transition mounting plate (76) is fixedly connected to the upper load.

2. The low-profile, high-load-bearing radar antenna mount as described in claim 1, characterized in that, The outer wall of the inner ring (10) is provided with an outwardly extending first limiting ring (12), and the bottom end of the inner ring (10) is installed with a pre-tightening plate (13) by a high-strength bolt. The first limiting ring (12) cooperates with the pre-tightening plate (13) to clamp the inner ring of the first bearing (11). The inner wall of the outer ring (20) is provided with an inwardly extending second limiting ring (22), and the gear ring (21) is installed on the outer ring (20) by high-strength bolts. The second limiting ring (22) cooperates with the gear ring (21) to clamp the outer ring of the first bearing (11).

3. The low-profile, high-load-bearing radar antenna mount as described in claim 1, characterized in that, The bottom end of the outer ring (20) is dynamically sealed to the pre-tightening plate (13) by a rotary oil seal (14); the top end of the outer ring (20) is sealed to the inner ring (10) by a labyrinth seal.

4. The low-profile, high-load-bearing radar antenna mount as described in claim 1, characterized in that, The drive unit includes a hydraulic motor (41) and a reducer (42). The hydraulic motor (41) is connected to the reducer (42) for transmission, and the output gear (40) is installed on the output shaft of the reducer (42).

5. The low-profile, high-load-bearing radar antenna mount as described in claim 1, characterized in that, An angle measuring device (50) is installed on the inner ring (10). The angle measuring device (50) includes: a double-plate gear (51) and a multi-turn encoder (52). The double-plate gear (51) is mounted on the inner ring (10) via the second bearing (53), so that the double-plate gear (51) meshes with the gear ring (21); the multi-turn encoder (52) is mounted on the inner ring (10), and the input shaft of the multi-turn encoder (52) is connected to the double-plate gear (51) via a coupling (54).

6. The low-profile, high-load-bearing radar antenna mount as described in claim 5, characterized in that, The ratio of the number of teeth of the gear ring (21) to that of the output gear (40) is an infinite decimal; the ratio of the number of teeth of the gear ring (21) to that of the double-plate gear (51) is 2. N N is a positive integer.

7. The low-profile, high-load-bearing radar antenna mount as described in claim 5, characterized in that, A valve assembly (60) is installed inside the inner ring (10), and the cables and pipes of the drive unit and the angle measuring device (50) are connected to external equipment through the valve assembly (60).

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