A high-integration radar turntable structure

Abstract

The application discloses a high-integration radar rotary table structure and relates to the technical field of radar rotary tables, which can realize compact layout of the radar rotary table structure and is beneficial to product modularization integration. The radar rotary table structure layout according to the application comprises a fixed part, a rotating part, a hollow speed reducer, a rotating joint and a rigid shift fork; the rotating joint is arranged in a hollow position; and the rotating part drives the rotating joint to rotate coaxially through the rigid shift fork. The application has the following advantages: 1) the radar rotary table product structure is compact, which is beneficial to reducing the envelope size of the radar rotary table; 2) the number of radar rotary table modules is small, which is beneficial to improving the inherent reliability of the radar rotary table; 3) the coaxial speed reduction function is added, the motor torque is effectively reduced, the motor weight is reduced, the torque and the rotating speed are more reasonably matched, and the adaptability of the rotary table is improved; and 4) the rotary table central shaft is hollow, which is beneficial to the installation of the rotating joint and facilitates photoelectric liquid transmission and coaxial angle measurement.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of radar rotary tables. BACKGROUND

[0002] The radar rotary table mainly realizes the use requirement of the phased array radar antenna array surface of large inertia, low rotation speed, high precision angle measurement and optical and electrical liquid comprehensive medium transmission, and the weight, output torque, precision and integration of the rotary table directly affect the adaptability of the whole radar. The traditional radar rotary table mainly adopts two kinds of ways, one is to adopt a single motor to drive a planetary gear reducer, and then drive the antenna array surface through a pair of gears, the disadvantage of this scheme is that the high speed gear is easy to be damaged, and the advantage is that the weight is light, and the other is to adopt a direct drive motor to directly drive the antenna array surface, the disadvantage of this scheme is that the motor torque is large and the weight is large, and the advantage is that there is no intermediate transmission link and the structure is simple.

[0003] The existing radar rotary table has the following disadvantages: 1. Single motor driving planetary gear reducer: the motor shaft is offset installed, the overall size is irregular and large; the number of parts is large, the modularization degree is low; the precision is reduced by the introduction of transmission links such as tooth side gap and low meshing stiffness, the mechanical transmission precision is poor; the last stage gear has large load and high noise; the maintenance cost is high, and the technical level of the maintenance personnel is high. 2. Direct drive motor directly driving the rotary table: the motor directly drives the load, the motor output torque is large, more windings and magnetic steel sheets are needed, the motor weight is large, the platform stiffness index is increased, which is not conducive to the adaptability requirement of the current lightweight rotary radar. SUMMARY

[0004] In order to solve the above problems, the application provides a high integration degree radar rotary table structure for driving the rotation work of the phased array radar antenna array surface, which is a high integration degree, direct drive, coaxial reduction, coaxial angle measurement, liquid cooling and optical and electrical coaxial transmission structure layout for the phased array radar rotary table, which can realize compact rotary table structure and is beneficial to product modularization integration.

[0005] In order to achieve the above technical purposes, the technical scheme adopted by the application includes:

[0006] A high-integration radar turntable structure, comprising a fixed part, a rotating part, a hollow speed reducer, a rotating joint, a rigid fork and a DV type ring. The inner flange lower surface of the hollow speed reducer is coaxially fitted and installed with the fixed part, and the outer flange lower surface of the hollow speed reducer is coaxially fitted and installed with the rotating part; the rotating joint is arranged in a hollow position, and the fixed end of the rotating joint is coaxially fitted and installed on the inner flange of the fixed part; the rotating shaft of the rotating joint and the rigid fork are coaxially fitted and installed; the upper surface of the outer flange of the hollow speed reducer is used for installing the radar load and designing the positioning bayonet, and the positioning bayonet is embedded in the distal end shaft head of the rigid fork with a small gap; when the rotating part rotates, the upper flange of the hollow speed reducer rotates, the upper flange positioning bayonet pushes the rigid fork to rotate, and the rigid fork pushes the rotating joint to rotate coaxially; thus, a radar turntable structure layout is completed, which integrates the rotating joint and has the functions of speed reduction, angle measurement and photoelectric liquid transmission, all modules and functional parts are coaxially arranged and installed, which is beneficial to compact structure layout.

[0007] Further, the fixed part comprises a motor stator, a stator base, a stator heat dissipation channel, a mechanical lock pin, a proximity switch, a stator end cover and a key; the stator heat dissipation channel is uniformly nested in the motor stator heat source gap, and is then fitted into the outer circular surface of the stator base, and then the stator end cover is axially compressed, and the keys are used in pairs to prevent the motor stator from rotating and slipping.

[0008] The stator heat dissipation channel is used for liquid cooling heat dissipation of the stator heat source, and the cooling liquid is aviation cooling liquid with low freezing temperature; all modules and functional parts of the fixed part are coaxially arranged and installed, which is beneficial to compact structure layout.

[0009] Further, the stator heat dissipation channel structure of the fixed part is not limited to a serpentine series water channel, but can also be a same-path parallel water channel; the same-path parallel water channel has good uniformity, high heat dissipation capacity and complex structure, and is suitable for high-power low-efficiency turntables; the serpentine series water channel has simple structure, poor uniformity and low heat dissipation capacity, and is suitable for low-power high-efficiency turntables; it is beneficial to adapt to different load characteristics and select appropriate water channels.

[0010] Further, the rotating part comprises a motor rotor, a rotor turntable, a rotor end cover and a key, the motor rotor is fitted into the inner circular surface of the rotor turntable, and then the rotor end cover is axially compressed, and the keys are used in pairs to prevent the motor rotor from rotating and slipping.

[0011] All modules and functional parts of the rotating part are coaxially arranged and installed, which is beneficial to compact structure layout.

[0012] Further, the DV type ring is used for sealing between the lower part of the stator base and the rotor turntable, and a sealed air gap is formed between the motor stator and the motor rotor, which is beneficial to prevent water vapor and foreign matters from entering the meshing air gap of the motor stator and the motor rotor.

[0013] Further, the farther the distal end shaft head of the rigid fork is, the higher the angle measurement accuracy is, and the matching gap of the distal end shaft head and the positioning socket is a machining quantitative value; when the radius of the distal end shaft head is greater than or equal to 150 mm and the matching gap is 0.08 mm, the angle measurement accuracy is higher than 2'; the radius and the gap can be adjusted as required, and the angle measurement accuracy can be obtained.

[0014] Further, the hollow speed reducer has a hollow structure, and the hollow size meets the coaxial installation of the rotary joint and the rigid fork, so that compact layout is facilitated.

[0015] Further, the rotary joint includes, but is not limited to, an optical joint, an electrical joint, a hydraulic joint and an angle measurement joint, and high-precision angle measurement and photoelectricity transmission can be realized.

[0016] The advantages of the radar turntable are as follows: 1) the direct drive and coaxial speed reduction radar turntable eliminates transmission components such as rotary bearings and final-stage gears, significantly reduces the motor output torque, and improves the reliability of the system; 2) the coaxial speed reduction function is added, the motor torque is effectively reduced, the torque and the rotation speed are more reasonably matched, the weight of the motor is reduced, the layout is compact, the envelope size of the radar turntable is reduced, the appearance is a regular cylindrical shape, and the adaptability of the turntable is improved; 3) the middle shaft of the turntable is hollow, which is beneficial to the installation of the rotary joint, facilitates photoelectricity transmission and coaxial angle measurement, and has high angle measurement accuracy and transmission accuracy; 4) the number of modules is small, each functional module can be independently produced, and can be quickly assembled, so that the modularization degree, interchangeability, design efficiency and the ability to quickly respond to the market of the radar turntable are improved. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 A fixed part of the embodiment of the application is shown in the figure.

[0018] Figure 2 A rotary part of the embodiment of the application is shown in the figure.

[0019] Figure 3 A schematic diagram of the turntable of the embodiment of the application is shown in the figure.

[0020] Wherein: 1-fixed part; 2-rotary part; 3-hollow speed reducer; 4-rotary joint; 5-rigid fork; 6-DV type ring; 10-motor stator; 11-stator base; 12-stator heat dissipation water channel; 13-mechanical locking pin; 14-proximity switch; 15-stator end cover; 16-key; 20-motor rotor; 21-rotor turntable; 22-rotor end cover; 23-key. DETAILED DESCRIPTION

[0021] The structure and layout of the application will be further explained in combination with the figures and the specific embodiments.

[0022] Reference is made to Figure 1The preferred embodiment of the present application comprises a motor stator 10, a stator base 11, a stator heat dissipation channel 12, a mechanical locking pin 13, a proximity switch 14, a stator end cover 15, and a key 16. The stator heat dissipation channel 12 can be made of stainless steel pipe and can be bent or formed by other processes. The stator heat dissipation channel 12 is evenly nested in the heat source gap of the motor stator 10. When the stator heat dissipation channel 12 is nested, heat-conducting glue is used to fill the gap between the stator heat dissipation channel 12 and the heat source, thereby improving the heat dissipation efficiency. Then, the assembled stator heat dissipation channel 12 and the motor stator 10 are loaded into the outer circular surface of the stator base 11. During assembly, the key 16 is used in pairs to prevent the motor stator 10 from rotating and slipping. Then, the stator end cover 15 is used for axial compression and fixation. The mechanical locking pin 13 and the proximity switch 14 are designed and installed on the stator base 11 to facilitate the safety protection and humanized operation of the turntable. The stator heat dissipation channel 12 is used for liquid cooling heat dissipation of the stator heat source. The cooling liquid is aviation cooling liquid, which has a low freezing temperature. The liquid supply port and the liquid return port of the stator heat dissipation channel 12 are located on the inner side of the stator base 11, which is beautiful and convenient. All modules and functional parts of the fixed part are installed in a coaxial layout, which is beneficial to compact structure layout and modular integration.

[0023] Referring to Figure 2 The preferred embodiment of the present application comprises a motor stator 10, a stator base 11, a stator heat dissipation channel 12, a mechanical locking pin 13, a proximity switch 14, a stator end cover 15, and a key 16. The stator heat dissipation channel 12 can be made of stainless steel pipe and can be bent or formed by other processes. The stator heat dissipation channel 12 is evenly nested in the heat source gap of the motor stator 10. When the stator heat dissipation channel 12 is nested, heat-conducting glue is used to fill the gap between the stator heat dissipation channel 12 and the heat source, thereby improving the heat dissipation efficiency. Then, the assembled stator heat dissipation channel 12 and the motor stator 10 are loaded into the outer circular surface of the stator base 11. During assembly, the key 16 is used in pairs to prevent the motor stator 10 from rotating and slipping. Then, the stator end cover 15 is used for axial compression and fixation. The mechanical locking pin 13 and the proximity switch 14 are designed and installed on the stator base 11 to facilitate the safety protection and humanized operation of the turntable. The stator heat dissipation channel 12 is used for liquid cooling heat dissipation of the stator heat source. The cooling liquid is aviation cooling liquid, which has a low freezing temperature. The liquid supply port and the liquid return port of the stator heat dissipation channel 12 are located on the inner side of the stator base 11, which is beautiful and convenient. All modules and functional parts of the fixed part are installed in a coaxial layout, which is beneficial to compact structure layout and modular integration.

[0024] Referring to Figure 3The preferred embodiment of the present application includes a fixed part 1, a rotating part 2, a hollow speed reducer 3, a rotating joint 4, a rigid shift fork 5, and a DV type ring 6. The inner flange lower surface of the hollow speed reducer 3 is coaxially fitted and installed with the fixed part 1, and the outer flange lower surface of the hollow speed reducer 3 is coaxially fitted and installed with the rotating part 2, both of which are positioned by a stop opening to improve the coaxiality of the assembly with the central shaft. The rotating joint 4 is arranged in a hollow position, and the fixed end of the rotating joint 4 is coaxially fitted and installed on the inner flange of the fixed part 1, which is positioned by a stop opening to improve the coaxiality of the assembly with the central shaft. The rotating shaft of the rotating joint 4 and the rigid shift fork 5 are coaxially fitted and installed, which is positioned by a stop opening to improve the coaxiality of the assembly with the central shaft. The upper surface of the outer flange of the hollow speed reducer 3 is used to install a radar load and design a positioning bayonet, and the positioning bayonet is inserted into the distal end shaft head of the rigid shift fork 5 with a small gap. When the rotating part 2 rotates, it pushes the upper flange of the hollow speed reducer 3 to rotate, and the upper flange positioning bayonet pushes the rigid shift fork 5 to rotate, and the rigid shift fork 5 pushes the rotating joint 4 to rotate coaxially. Thus, a radar turntable structure layout is completed, which integrates a rotating joint and has a speed reduction function, an angle measurement function, and an optical-electric-hydraulic transmission function. All modules and functional components are coaxially arranged and installed, which is conducive to compact structure layout.

[0025] The structure of the stator heat dissipation waterway 12 is not limited to a serpentine series waterway, and can also be a same-path parallel waterway. The same-path parallel waterway has good uniformity and high heat dissipation capacity, but has a complex structure, is suitable for high-power low-efficiency turntables, and the serpentine series waterway has a simple structure, poor uniformity, low heat dissipation capacity, and is suitable for low-power high-efficiency turntables. It is conducive to adapting to different load characteristics and selecting appropriate waterways.

[0026] The farther the distal end shaft head of the rigid shift fork 5 is, the higher the angle measurement accuracy is. The fitting gap between the distal end shaft head and the positioning bayonet is a fixed value. When the radius of the distal end shaft head is greater than or equal to 150 mm and the fitting gap is 0.08 mm, the angle measurement accuracy is higher than 2'. It is conducive to adjusting the radius and gap as needed to obtain the angle measurement accuracy.

[0027] The DV type ring 6 is used to seal the lower part between the stator base 11 and the rotor turntable 21, and a sealed air gap is formed between the motor stator 10 and the motor rotor 20, which is conducive to preventing water vapor and foreign matter from entering the meshing air gap between the motor stator 10 and the motor rotor 20, and improving the reliability of the turntable.

[0028] The hollow speed reducer 3 has a hollow structure, and the hollow size meets the coaxial installation of the rotating joint 4 and the rigid shift fork 5, which is conducive to compact layout.

[0029] The rotating joint 4 includes, but is not limited to, an optical joint, an electrical joint, a hydraulic joint, and an angle measurement joint, can realize high-precision angle measurement and optical-electric-hydraulic transmission, improve the expandability of the turntable, and be suitable for different load needs and multi-field use.

Claims

1. A highly integrated radar turntable structure, characterized in that: The application relates to a rotary table, which comprises a fixed part (1), a rotating part (2), a hollow speed reducer (3), a rotary joint (4), a rigid shift fork (5) and a DV type ring (6); the inner flange lower surface of the hollow speed reducer (3) is coaxially matched and installed with the fixed part (1), and the outer flange lower surface of the hollow speed reducer (3) is coaxially matched and installed with the rotating part (2); the rotary joint (4) is arranged in a hollow position, and the fixed end of the rotary joint (4) is coaxially matched and installed on the inner flange of the fixed part (1); the upper surface of the outer flange of the hollow speed reducer (3) is used for installing a radar load and designing a positioning bayonet, and the positioning bayonet gap is embedded in the distal end shaft head of the rigid shift fork (5); when the rotating part (2) rotates, the upper flange of the hollow speed reducer (3) is pushed to rotate, the rigid shift fork (5) is pushed to rotate by the upper flange positioning bayonet, and the rotary joint (4) is pushed to rotate coaxially by the rigid shift fork (5); all modules and functional parts are coaxially arranged and installed; the fixed part (1) comprises a motor stator (10), a stator base (11), a stator heat dissipation water channel (12), a mechanical lock pin (13), a proximity switch (14), a stator end cover (15) and a key (16); the stator heat dissipation water channel (12) is uniformly nested in the heat source gap of the motor stator (10), is then loaded into the outer circular surface of the stator base (11), and is then axially compressed by the stator end cover (15); the keys (16) are used in pairs to prevent the motor stator (10) from rotating and slipping; the rotating part (2) comprises a motor rotor (20), a rotor rotating disc (21), a rotor end cover (22) and a key (23); the motor rotor (20) is loaded into the inner circular surface of the rotor rotating disc (21), is then axially compressed by the rotor end cover (22), and the keys (23) are used in pairs to prevent the motor rotor (20) from rotating and slipping.

2. The high-integration radar rotary table structure according to claim 1, characterized in that, The stator heat dissipation water channel (12) of the fixed part (1) is in the structural form of a serpentine series water channel or a same-path parallel water channel; the serpentine series water channel is suitable for a low-power high-efficiency rotary table, and the same-path parallel water channel is suitable for a high-power low-efficiency rotary table.

3. The high-integration radar rotary table structure according to claim 2, characterized in that: The lower part between the stator base (11) and the rotor rotating disc (21) is sealed by the DV type ring (6), and a sealed air gap is formed between the motor stator (10) and the motor rotor (20).

4. The high-integration radar rotary table structure according to claim 1, characterized in that: When the radius of the distal end shaft head of the rigid shift fork (5) is greater than or equal to 150 mm, the angle measurement accuracy is higher than 2'.

5. The high-integration radar rotary structure according to claim 1, characterized in that: The hollow size of the hollow speed reducer (3) meets the coaxial installation of the rotary joint (4) and the rigid shift fork (5).

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