阅读说明：本技术 一种用于天线罩测试的转台 (Rotary table for testing antenna housing ) 是由 王晓飞 肖继红 刘辉 蔡洪伟 卢健 王遂学 水涌涛 周岩 龚晓刚 张新磊 曹玉梅 于 2019-09-23 设计创作，主要内容包括：本发明一种用于天线罩测试的转台,包括天线罩转台和天线转台；天线罩转台包括滚动轴、俯仰轴、U型支撑、上直线、上方位、垂直直线、下方位、支杆支撑、下直线；天线转台包括支杆直线、支杆方位、支杆、腕关节、三轴转台、两轴转台。下直线上表面安装下方位；下方位后侧连接支杆支撑,上表面安装上方位；上方位上表面安装垂直直线；垂直直线上表面安装上直线,上直线上表面安装U型支撑,俯仰轴安装在U型支撑两侧内框上,外环安装滚动轴。支杆直线安装在支杆支撑上,上面安装支杆方位,支杆一端安装在支杆方位上,另一端端面连接腕关节,三轴转台、两轴转台分别安装在腕关节上。通过模拟天线与天线罩的实际工作状态,实现三种不同类型天线罩的测试。(The invention relates to a turntable for testing a radome, which comprises a radome turntable and an antenna turntable; the antenna housing turntable comprises a rolling shaft, a pitching shaft, a U-shaped support, an upper straight line, an upper direction, a vertical straight line, a lower direction, a supporting rod support and a lower straight line; the antenna rotary table comprises a support rod straight line, a support rod azimuth, a support rod, a wrist joint, a three-axis rotary table and a two-axis rotary table. The upper surface of the lower straight line is provided with a lower direction; the rear side of the lower part is connected with a support rod support, and the upper surface is provided with an upper part; the upper surface of the upper position is provided with a vertical straight line; an upper straight line is arranged on the upper surface of the vertical straight line, a U-shaped support is arranged on the upper surface of the upper straight line, the pitching shafts are arranged on inner frames on two sides of the U-shaped support, and the outer rings are provided with rolling shafts. The supporting rod is linearly arranged on the supporting rod support, the supporting rod is arranged on the supporting rod support in the direction, one end of the supporting rod is arranged on the supporting rod in the direction, the end face of the other end of the supporting rod is connected with the wrist joint, and the three-axis rotary table and the two-axis rotary table are respectively arranged on the wrist joint. The test of the antenna housing with three different types is realized by simulating the actual working states of the antenna and the antenna housing.)

1. A revolving stage for antenna house test which characterized in that: comprises an antenna cover rotary table (1) and an antenna rotary table (2); the antenna housing rotary table (1) comprises a rolling shaft (101), a pitching shaft (102), a support (103), an upper straight line (104), an upper position (105), a vertical straight line (106), a lower position (107), a support rod support (108) and a lower straight line (109); the lower straight line (109) is of a parallel double-guide-rail straight line structure and is horizontally placed on the ground; mounting a lower bearing (107) mechanism on the upper surface of the lower straight line (109); a strut support (108) is connected to the rear side of the lower part (107), and an upper part (105) mechanism is installed on the upper surface of the lower part (107); a vertical straight line (106) mechanism is arranged on the upper surface of the upper direction (105); an upper straight line (104) mechanism is arranged on the upper surface of the vertical straight line (106); the upper straight line (104) is a parallel double-guide-rail straight line structure, and a supporting (103) mechanism is arranged on the upper surface of the upper straight line; the pitching shaft (102) mechanism is arranged on the inner frames at two sides of the support (103); a rolling shaft (101) mechanism is arranged on the outer ring of the supporting (103) mechanism; the antenna turntable (2) comprises a support rod straight line (201), a support rod azimuth (202), a support rod (203), a wrist joint (204), a three-axis turntable (205) and a two-axis turntable (206); the support rod straight line (201) is arranged on the support rod support (108), and the support rod straight line (201) is in a parallel double-guide-rail straight line form; a strut azimuth (202) mechanism is arranged on the upper surface, one end of a strut (203) is connected to the strut azimuth (202) mechanism, the other end of the strut is provided with a wrist joint (204) mechanism, and a three-axis turntable (205) and a two-axis turntable (206) are respectively arranged on the wrist joint (204).

2. A turret for radome testing according to claim 1, wherein: according to the test requirements, a three-axis turntable (205) or a two-axis turntable (206) is selected as an antenna test turntable, and the three-axis turntable (205) or the two-axis turntable (206) is installed on the wrist joint (204); mounting the antenna to be measured on a three-axis turntable (205) or a two-axis turntable (206); the support rod (203) and the wrist joint (204) are translated into or out of the support (103) of the radome test turntable (1) through the support rod straight line (201); the antenna turntable is avoided through the matching action of the support rod straight line (201), the support rod azimuth (202) and the wrist joint (204).

3. A turret for radome testing according to claim 2, wherein: the specific steps of mounting the antenna to be measured on the three-axis turntable (205) or the two-axis turntable (206) are as follows: when a three-axis turntable (205) is selected, the rolling angle of the antenna is adjusted through a rolling shaft, the azimuth angle of the antenna is adjusted through an azimuth shaft, the pitch angle of the antenna is adjusted through a pitch shaft, and the antenna is adjusted to be in an appointed initial position state; when the two-axis rotary table (206) is selected, the azimuth angle of the antenna is adjusted through the azimuth axis, the pitch angle of the antenna is adjusted through the pitch axis, and the antenna is adjusted to be in an appointed initial position state.

4. A turret for radome testing according to claim 1, wherein: and the antenna housing is arranged on the outer ring of the rolling shaft (101), the rolling angle of the antenna housing is adjusted through the rolling shaft (101), the pitch angle of the antenna housing is adjusted through the pitch shaft (102), and the antenna housing is adjusted to a specified position state.

5. A turret for radome testing according to claim 1, wherein: when the antenna housing is driven by the pitching shaft (102) to do pitching motion, the phase center is deviated, and the phase center is compensated through the upper straight line (104) and the vertical straight line (106); in a transfer state, the antenna rotary table (2) arranged on the support rod support (108) realizes independent movement through a lower position (107); in a linkage state, the antenna rotary table (2) and the antenna housing rotary table (1) realize synchronous movement through an upper direction (105); according to the length size of the antenna housing, the antenna housing is guaranteed to be always located in a testing quiet zone through the front and back movement of the lower straight line (109).

6. A turret for radome testing according to any one of claims 1-5, wherein: antenna revolving stage and antenna house revolving stage be the multi-functional module combination mode, specifically do:

the combination is as follows: the antenna rotary table (2) and the antenna housing rotary table (1) are in a linkage state; in the linkage mode, the relative position between the antenna rotary table and the antenna housing rotary table is fixed;

combining two: the antenna rotary table (2) and the antenna housing rotary table (1) keep the antenna rotary table (2) not to move all the time, and only the antenna housing rotary table (1) moves;

combining three components: the antenna rotary table (2) and the antenna housing rotary table (1) are completely in a transfer state; in transfer mode, the relative position between the antenna turntable and the radome turntable may vary.

7. A turret for radome testing according to claim 6, wherein: the antenna housing rotary table (1) and the antenna rotary table (2) are in a split structure form.

8. A turret for radome testing according to claim 6, wherein: the support (103) adopts a U-shaped structural form.

9. A turret for radome testing according to claim 1, wherein: the vertical straight line (106) is in the form of a frame structure.

10. A turret for radome testing according to claim 1, wherein: the upper direction (105) and the lower direction (107) adopt a coaxial sleeving structure form.

Technical Field

The invention relates to the field of antenna housing testing, and can realize electrical performance testing of various antenna housings through a multifunctional novel antenna housing testing turntable.

Background

The performance of the radome, which is an important component of an aircraft control system, directly affects guidance accuracy, so that in a high-performance aircraft system, detailed and accurate measurement needs to be performed on the performance of the radome to guide the design of the radome. The radome test mainly tests the performance change of the antenna before and after the radome is covered, the radome test technology is currently forbidden to China, and the core point of the radome test turntable is the radome test turntable.

And the electrical performance test of the antenna housing is carried out by simulating the actual working states of the seeker antenna and the antenna housing through the antenna housing test rotary table and assisting a microwave test system to carry out the electrical performance test. The simulation fidelity of the antenna housing test rotary table to the working state of the aircraft determines the test accuracy of the whole test system. The operation modes of aircrafts of different models are different, so that the position relation and the movement mode of the seeker antenna and the antenna cover are various. At present, the number of movement axes of the radome testing turntable is not more than 8, and the actual working states of antennas of various types and radomes are difficult to be completely simulated. When the antenna and radome states simulated by the radome testing turntable are not completely consistent with the actual working state, the test result obtained in the state is unreal, and even the electrical performance of the radome can be misjudged.

The basic conditions for the radome test are: the test method comprises a microwave darkroom, a radome test turntable, a microwave test system and a software control system, wherein the microwave darkroom, the microwave test system and the software control system are universal, the radome test turntable is special, the radome test turntable can only be basically suitable for 1-2 radome test methods, the number of the current universal radome test methods is three, and the method means that different test methods are adopted and need to be carried out in different microwave darkrooms.

Disclosure of Invention

The technical problem solved by the invention is as follows: aiming at the defects of the prior art, the rotating platform for testing the antenna housing is designed, the antenna housing testing rotating platform can simultaneously meet three antenna housing testing methods, and the testing of various antenna housings is realized.

The technical scheme of the invention is as follows: a rotary table for testing a radome comprises a radome rotary table and an antenna rotary table; the antenna housing turntable comprises a rolling shaft, a pitching shaft, a support, an upper straight line, an upper position, a vertical straight line, a lower position, a support rod support and a lower straight line; the lower straight line is of a parallel double-guide-rail straight line structure and is horizontally placed on the ground; installing a lower direction mechanism on the upper surface of the lower straight line; the rear side of the lower part is connected with a supporting rod support, and the upper surface of the lower part is provided with an upper part mechanism; the upper surface of the upper position is provided with a vertical straight line mechanism; the upper surface of the vertical straight line is provided with an upper straight line mechanism; the upper straight line is of a parallel double-guide-rail straight line structure, and a supporting mechanism is arranged on the upper surface of the upper straight line; the pitching shaft mechanisms are arranged on the inner frames on the two sides of the support; the outer ring of the supporting mechanism is provided with a rolling shaft mechanism; the antenna rotary table comprises a support rod straight line, a support rod azimuth, a support rod, a wrist joint, a three-axis rotary table and a two-axis rotary table; the support rod is linearly arranged on the support rod support, and the support rod is in a parallel double-guide-rail linear form; a supporting rod azimuth mechanism is arranged on the upper surface, one end of the supporting rod is connected to the supporting rod azimuth mechanism, the other end of the supporting rod is provided with a wrist joint mechanism, and the three-axis rotary table and the two-axis rotary table are respectively arranged on a wrist joint.

According to the test requirement, a three-axis turntable or a two-axis turntable is selected as an antenna test turntable and is arranged on the wrist joint; mounting the antenna to be measured on a three-axis turntable or a two-axis turntable; the supporting rod and the wrist joint are translated into or out of the support of the antenna housing testing turntable through the supporting rod; the avoidance of the antenna rotary table is realized through the matching action of the straight line of the supporting rod, the direction of the supporting rod and the wrist joint.

The method for installing the antenna to be measured on the three-axis turntable or the two-axis turntable specifically comprises the following steps: when a three-axis turntable is selected, the rolling angle of the antenna is adjusted through the rolling axis, the azimuth angle of the antenna is adjusted through the azimuth axis, the pitch angle of the antenna is adjusted through the pitch axis, and the antenna is adjusted to be in an appointed initial position state; when the two-shaft turntable is selected, the azimuth angle of the antenna is adjusted through the azimuth shaft, the pitch angle of the antenna is adjusted through the pitch shaft, and the antenna is adjusted to be in an appointed initial position state.

And the antenna housing is arranged on the outer ring of the rolling shaft, the rolling angle of the antenna housing is adjusted through the rolling shaft, the pitch angle of the antenna housing is adjusted through the pitch shaft, and the antenna housing is adjusted to a specified position state.

When the antenna housing is driven by the pitching shaft to perform pitching motion, the phase center is deviated, and the phase center is compensated through the upper straight line and the vertical straight line; in a transfer state, the antenna rotary table arranged on the support rod support can move independently through the lower direction; in a linkage state, the antenna rotary table and the antenna housing rotary table realize synchronous movement through the upper positions; according to the length and size of the antenna housing, the antenna housing is guaranteed to be always in a testing quiet zone through the lower straight line front-and-back movement.

Antenna revolving stage and antenna house revolving stage be the multi-functional module combination mode, specifically do:

the combination is as follows: the antenna turntable and the antenna housing turntable are in a linkage state; in the linkage mode, the relative position between the antenna rotary table and the antenna housing rotary table is fixed;

combining two: the antenna rotary table and the antenna housing rotary table keep the antenna rotary table not to move all the time, and only the antenna housing rotary table moves;

combining three components: the antenna turntable and the antenna housing turntable are completely in a transfer state; in transfer mode, the relative position between the antenna turntable and the radome turntable may vary.

The antenna housing rotary table and the antenna rotary table are in a split structure form.

The radome turret includes: the antenna housing rolling, the antenna housing pitching, the antenna housing lower straight line deviation and the antenna housing azimuth four-axis movement capacity.

The radome turntable support adopts a U-shaped structural form.

The vertical straight line of the radome turntable adopts a frame structure form.

The upper position and the lower position of the antenna housing rotary table adopt a coaxial sleeving structure form.

The antenna housing rotary table increases the motion capability of an upper straight line and a vertical straight line, and can realize phase center compensation.

The supporting rod is in an inverted L-shaped structural form, one end of the supporting rod is connected with the wrist joint, and the other end of the supporting rod is connected with the supporting rod in the azimuth direction.

The supporting rod can be detached from the supporting rod in the direction.

The antenna rotary table has two working modes, one is a three-axis rotary table, and the other is a two-axis rotary table.

The two-axis turntable comprises: antenna pitching and antenna azimuth two-axis motion capability.

The three-axis turntable comprises: the antenna rolls, the antenna pitches and the antenna direction three-axis motion.

The antenna rotary table increases the linear and azimuth movement capacity of the supporting rod, and avoidance can be realized through matching with the wrist joint.

Compared with the prior art, the invention has the advantages that:

1) the existing radome testing turntable is only applicable to 1-2 testing methods generally, the invention firstly provides that the radome testing turntable is designed into a multifunctional module combination mode, and the combination modes are three, namely:

the combination is as follows: the antenna turntable and the antenna housing turntable are in a linkage state;

combining two: keeping the antenna turntable not moving and only keeping the antenna housing turntable moving;

combining three components: the antenna turntable and the antenna housing turntable are completely in a transfer state.

Three different antenna housing test methods can be realized in one microwave darkroom, so that the test cost is saved, and the utilization rate is improved.

2) The antenna housing testing rotary table is designed into a split structure, so that the antenna housing testing rotary table and the antenna testing rotary table can be split and combined, and a good foundation is laid for the realization of three antenna housing testing methods.

3) The existing radome testing turntable can not completely simulate the positions and the motion relation of a seeker antenna and a radome, for example, the radome can only simulate a rolling motion mode but not a pitching motion mode. The antenna housing testing turntable designed by the invention comprises: roll, pitch, upper line offset, upper position, lower position, vertical line, and lower line offset seven-axis motion capabilities. The antenna test turntable designed by the invention comprises: the three-axis turntable, the two-axis turntable, the wrist joint, the azimuth and the linear offset eight-axis motion capability realize the complete simulation of the positions and the motion relation of the seeker antenna and the antenna housing, and lay a good foundation for accurately testing the electrical performance of the antenna housing.

4) The antenna housing testing turntable has the advantages that the existing antenna housing testing turntable does not have phase center compensation when the phased array antenna housing is tested, the linear motion capability and the vertical linear motion capability are provided and designed for the first time, and the phase center compensation can be realized, so that the antenna and the antenna housing are prevented from generating phase center offset due to relative motion in the testing process, the testing phase center is ensured to be invariable all the time, and a good foundation is laid for accurately testing the electrical property of the antenna housing.

5) The conventional radome testing turntable does not have the integral horizontal linear offset capability, the linear offset movement capability under the radome is designed, the integral linear movement of the radome is realized, and the radome to be tested can be ensured to be always in a testing quiet zone when the radome with a longer test length is tested.

6) The conventional radome testing turntable does not have the vertical straight line offset capability, the radome vertical straight line offset movement capability is designed, and the overall vertical straight line movement of the radome is realized. The vertical straight line adopts a frame structure form, so that the weight is reduced, and the influence on the testing precision of the antenna housing caused by the reflection of a metal structural member is avoided.

7) The existing antenna housing test turntable can collide with an antenna housing due to the fact that an antenna runs in the antenna housing at a large angle, and the scanning angle of the antenna is limited to a certain extent. The wrist joint is proposed and designed in the antenna turntable for the first time, the wrist joint is matched with the support rod straight line and the support rod direction to avoid collision of the antenna and the antenna housing in the test process, and the antenna scanning angle expansion is realized.

8) The antenna housing testing rotary table only has one working mode, two working modes are provided and designed in the antenna rotary table, one working mode is a three-axis rotary table, and the other working mode is a two-axis rotary table, so that the antenna housing testing rotary table can test various different antennas and antenna housings.

Drawings

FIG. 1 is a side schematic view of the present invention;

FIG. 2 is a rear schematic view of the present invention;

fig. 3 is an exploded view of the radome turret of the present invention;

FIG. 4 is an exploded view of the antenna turntable of the present invention;

fig. 5 is a schematic view of a coaxial nested structure of the radome of the present invention in azimuth;

FIG. 6 is a schematic view of the avoidance system of the present invention;

fig. 7 is a schematic diagram of the phase compensation of the present invention.

Detailed Description

As shown in fig. 1-2, the turntable for testing the radome of the present invention comprises a radome turntable 1 and an antenna turntable 2; as shown in fig. 3, the radome turret is composed of a rolling axis 101, a pitching axis 102, a U-shaped support 103, an upper straight line 104, an upper position 105, a vertical straight line 106, a lower position 107, a strut support 108, and a lower straight line 109; as shown in fig. 4, the antenna turntable is composed of a strut straight line 201, a strut azimuth 202, a strut 203, a wrist joint 204, a three-axis turntable 205, and a two-axis turntable 206. The lower straight line 109 of the antenna housing rotary table 1 is horizontally arranged on the ground and is in a parallel double-guide-rail straight line form, so that the integral horizontal translation of the antenna housing rotary table and the antenna rotary table arranged on the antenna housing rotary table can be realized; as shown in fig. 3, a lower direction 107 mechanism is installed on the upper surface of the lower line 109, and a strut support 108 is connected to the rear side of the lower direction 107, and is used for installing the antenna turntable 2, so that the antenna turntable installed on the strut support can independently operate along the direction; the upper surface of the lower position 107 is provided with an upper position 105 mechanism, so that the antenna cover rotary table arranged on the upper surface can independently operate along the direction, and when the antenna cover rotary table is linked with the antenna rotary table, the antenna cover rotary table arranged on the upper surface can synchronously operate along the direction with the antenna rotary table; a vertical straight line 106 mechanism is arranged on the upper surface of the upper direction 105, so that the antenna cover rotary table arranged on the mechanism can move along the vertical direction; an upper straight line 104 mechanism is arranged on the upper surface of the vertical straight line 106, and the upper straight line 104 is in a parallel double-guide-rail straight line form, so that the antenna cover rotary table arranged on the upper straight line can move along the horizontal direction; the upper surface of the upper straight line 104 is provided with a U-shaped support 103 mechanism for supporting a radome pitching shaft 102 mechanism and a rolling shaft 101 mechanism, and the U-shaped structural form is adopted, so that the test antenna can conveniently enter or exit the radome on one hand, and the influence on the radome electrical performance test is reduced by reducing a metal reflector on the other hand; the pitching shaft 102 mechanism is arranged on the inner frames on two sides of the U-shaped support 103, so that the tested antenna cover can move along the pitching direction; the outer ring of the U-shaped support 103 mechanism is provided with a rolling shaft 101 mechanism, so that the measured antenna cover can move along the rolling direction. As shown in fig. 4, a support rod straight line 201 of the antenna turntable 2 is installed on the support rod support 108, and the support rod straight line 201 is in the form of a parallel dual-guide-rail straight line, so that the antenna turntable installed thereon can move along the horizontal direction; the bearing rod azimuth 202 mechanism is arranged on the antenna rotary table, so that the antenna rotary table arranged on the antenna rotary table can move along the azimuth direction; one end of the supporting rod 203 is connected to the supporting rod azimuth 202 mechanism, the supporting rod 203 is in an L-shaped structure form, and an antenna turntable arranged on the supporting rod can extend into the antenna cover to be measured without colliding with the antenna cover turntable; the other end of the supporting rod 203 is provided with a wrist joint 204 mechanism which is used as a platform for installing the three-axis turntable 205 and the two-axis turntable 206 and can realize the evasive operation of the antenna turntable arranged on the platform; the three-axis turntable comprises three axes of rolling, azimuth and pitching; the two-axis turntable comprises two axes of azimuth and elevation.

According to the test requirement, a three-axis turntable 205 or a two-axis turntable 206 is selected as an antenna test turntable, and the three-axis turntable 205 or the two-axis turntable 206 is installed on the wrist joint 204. The antenna to be measured is installed on the three-axis rotary table 205 or the two-axis rotary table 206, when the three-axis rotary table 205 is selected, the rolling angle of the antenna is adjusted within the range of 0-360 degrees through the rolling shaft, the azimuth angle of the antenna is adjusted within the range of +/-60 degrees through the azimuth shaft, the pitch angle of the antenna is adjusted within the range of +/-8 degrees through the pitch shaft, and the antenna is adjusted to be in an appointed initial position state. When the two-axis turntable 206 is selected, the azimuth angle of the antenna is adjusted within the range of 70 degrees to-6 degrees through the azimuth axis, and the pitch angle of the antenna is adjusted within the range of +/-70 degrees through the pitch axis, so that the antenna is adjusted to a specified initial position state. And then the strut 203 and the wrist joint 204 are translated into or out of the antenna cover to be tested through the strut straight line 201. When the scanning range of the antenna is larger than +/-30 degrees, the antenna hanging arm collides with the antenna housing in the operation process of the antenna to influence the operation angle of the antenna, as shown in fig. 6, through the cooperation of the support rod straight line 201, the support rod azimuth 202 and the wrist joint 204, the support rod straight line 201 moves within the range of 0-200 mm, the support rod azimuth 202 operates within the range of 0-360 degrees, and the wrist joint 204 operates within the range of +/-45 degrees, so that the antenna housing testing turntable has the avoiding capability, the scanning capability of the wide angle range of the antenna housing can be realized, and the testing range is expanded.

An antenna housing is arranged on an outer ring of the rolling shaft 101, the rolling angle of the antenna housing is adjusted within the range of 0-360 degrees through the rolling shaft 101, the pitch angle of the antenna housing is adjusted within the range of-50 degrees to +50 degrees through the pitch shaft 102, and the antenna housing is adjusted to be in a specified position state. In phased array antenna house test, the antenna links firmly with the antenna house, and when pitch shaft 102 drove the antenna house and is pitching motion, the phase center of antenna can produce the displacement thereupon, and for the test phase center of guaranteeing phased array antenna is unchangeable all the time, as shown in fig. 7, compensates the phase center through removing last straight line 104 and perpendicular straight line 106 this moment, goes up straight line 104 motion range: ± 200mm, vertical line 106 range of motion: the phase center of the phased array antenna is always consistent in the test process, so that the antenna housing test rotary table has the phase center compensation function, and the antenna housing test precision is guaranteed. As shown in fig. 5, the upper azimuth 105 and the lower azimuth 107 of the radome turntable adopt a coaxial sleeved structural form, and the upper azimuth 105 and the lower azimuth 107 are transferred and linked through a clutch; in a transfer state, the antenna rotary table 2 arranged on the support rod support 108 moves within the range of 0-360 degrees through the lower direction 107; under the linkage state, the antenna rotary table 2 and the antenna housing rotary table 1 synchronously move within the range of 0-360 degrees through the upper direction 105. According to the length size of the antenna housing, the movement range is that the antenna housing moves back and forth through a lower straight line 109: 1500.0mm to 1500.0mm, and the antenna housing is ensured to be always in a testing quiet zone.

The radome rolling, pitching, azimuth rotation and L support rod rotation are driven by the servo motor matched with the novel efficient right-angle gear box. The antenna housing is driven to carry through the lifting movement of the servo motor and the ball screw, and the guide rail sliding block completes movement guiding. The linear motion on the antenna cover and the linear motion under the antenna cover are both transmitted through the gear and the rack. The load is mounted on the connecting tool of the rolling shaft.

In the invention, the three-axis antenna turntable and the two-axis antenna turntable in the antenna test turntable adopt the same structural principle, and the shafting adopts the angular contact ball bearings and the auxiliary supports in a back-to-back mode to form the shafting, thereby further improving the rotation precision and the working stability of the shafting and meeting the requirement of the rotation precision in the technical requirement. The driving torque is provided by the transmission of a servo motor and a reduction gear, the gear is arranged on a shaft system, and a position feedback signal is provided by an angle encoder. The L branch is rotatory to adopt servo motor cooperation novel high-efficient right angle gear case to accomplish the drive.

The rolling, pitching and azimuth rotation of the radome test turntable and the rotation of the L supporting rod are driven by the servo motor matched with the novel efficient right-angle gearbox. The rolling is formed by adopting high-precision mechanical bearings and an outer turbine type four-point contact ball bearing, a servo motor acceleration and deceleration mechanism provides a rotating torque, and a deceleration transmission gear is used as a transmission mechanism; the pitching adopts a servo motor to provide rotation power, a flange output right-angle precise gear box is used as a transmission mechanism, a pair of angular contact ball bearings provides a rotation shaft system, and a limiting mechanism is designed on the side surface of a pitching base; a servo motor is used for providing rotation power in the direction, a speed reduction transmission gear is used as a transmission mechanism, and a rotary shaft system is provided by a rotary table combined bearing. The lifting motion of the antenna housing testing turntable is driven and borne by a servo motor and a ball screw, and the guide rail sliding block completes motion guiding. The upper straight line and the lower straight line of the radome testing turntable are moved by matching a servo motor with a slide block guide rail. And each frame motor is provided with a band-type brake device so as to facilitate transportation and load installation. And a mounting hole is reserved on the reference surface of the workbench so as to facilitate the mounting of a user product. The drag chain is installed on the linear motion part, so that the problem of cable winding caused by equipment motion is avoided.

The rolling shaft, the pitching shaft, the upper direction, the lower direction, the upper straight line, the lower straight line and the vertical straight line of the antenna housing test turntable are used; the specific implementation mode of the multifunctional novel radome test turntable is described by taking a three-axis antenna turntable and a two-axis antenna turntable as examples.

Those skilled in the art will appreciate that those matters not described in detail in the present specification are well known in the art.