CN102946000B - Statical indetermination radar/antenna support dynamic leveling method - Google Patents

Abstract

The invention provides a statical indetermination radar/antenna support dynamic leveling method which comprises the followings steps of a step S1 of setting a first gradienter and a second gradienter with indication directions which are mutually vertical on a rotary table; a step S2 of adjusting the indication directions of a radar/antenna on the rotary table to be horizontal; a step S3 of controlling the rotary table to rotate around an azimuth axis to enable the radar/antenna to direct to a plurality of positions, and respectively adjusting supporting legs on end portions of four horizontal landing legs to enable indication of the first gradienter to be horizontal when the radar/antenna directs to the plurality of positions; and a step S4 of continuously controlling the rotary table to rotate around the azimuth axis to enable the radar/antenna to direct to a plurality of positions, maintaining the indication of the first gradienter to be horizontal, and adjusting supporting legs on end portions of four horizontal landing legs to enable indication reading at each position of the second gradienter to be unanimous. The statical indetermination radar/antenna support dynamic leveling method enables the rotary table to be adjusted to be in a horizontal state under biggest gravitational torque, and then enables stiffness of each horizontal supporting leg to be adjusted to enable stress of each supporting leg to be unanimous.

Description

Dynamic leveling method for statically indeterminate antenna support

technical field

The invention relates to the field of antenna brackets, in particular to a dynamic leveling method for an ultra-static antenna bracket.

Background technique

The antenna bracket is the base of the radar antenna and its driving device (turntable), and the turntable is in a horizontal state by adjusting the bracket. The adjustment of the portable bracket faces two problems, one is the problem of static indetermination, and the other is the problem of micro-deformation of the structure.

In order to improve the windproof problem of the portable bracket, the antenna bracket adopts a statically indeterminate structure, for example, the 4-leg solution (super-static structure) is 1.73 times the wind resistance of the 3-leg solution (static structure). However, the statically indeterminate structure brings difficulties to the horizontal adjustment of the support. Due to its statically indeterminate characteristics, the requirement of "the turntable is level" is not enough to determine the force on each supporting leg; when it is level, there can be infinite combinations of forces; this means that there can be infinite adjustments. The best solution is that the force of each supporting leg is equal, which can make the deformation in all directions the same. In the prior art, it is generally only adjusted so that the "turntable reaches the level", without considering the uniformity of the force on each support leg, resulting in a large degree of randomness in the adjustment.

The adjustment problem caused by the slight deformation of the structure is due to the light weight of the structure of the antenna bracket, and the stiffness is obviously weaker than that of the fixed antenna bracket. The gravitational moment generated by the antenna's own weight will affect the system level, and different elevation angles and different azimuth angles will correspond to different interferences. After the level adjustment of the system is completed in any fixed state, as long as the elevation angle or azimuth angle of the radar is changed, it may cause the turntable to lose its level.

Contents of the invention

The present invention aims to provide a dynamic leveling method for an ultra-statically indeterminate antenna support that makes each supporting leg uniformly stressed, so as to reduce the problem of instability of the support caused by the gravitational moment generated by the antenna.

The invention provides a dynamic leveling method for a super statically indeterminate antenna support. The super statically indeterminate antenna support includes a vertically arranged center column and four horizontal legs arranged at the lower end of the center column. The horizontal leg is arranged at one end far away from the center column There are supporting feet adjustable in height along the vertical direction, and the upper end of the center column is provided with a turntable for installing the antenna; the leveling method includes the following steps: Step S1: setting a first level and a second level on the turntable to indicate that the directions are perpendicular to each other; Step S2: Adjust the orientation of the antenna set on the turntable to be horizontal; Step S3: Control the rotation of the turntable around the azimuth axis to make the antenna point to multiple directions, adjust the supporting feet at the ends of the four horizontal legs respectively, so that the antenna points to each direction , the indications of the first spirit level are all horizontal; step S4: continue to control the turntable to rotate around the azimuth axis so that the antenna points to multiple directions, maintain the indication of the first spirit level as level, and adjust the supporting feet at the ends of the four horizontal legs so that the first The readings of the two level indicators are consistent when the antenna points to all directions.

Further, step S3 specifically includes the following steps: Step S31: take the four horizontal legs as the first horizontal leg, the second horizontal leg, the third horizontal leg and the fourth horizontal leg in sequence, and control the rotation of the turntable around the azimuth axis Make the antenna point to the first horizontal leg or the third horizontal leg, adjust the second horizontal leg and/or the fourth horizontal leg, so that the first level indicator is horizontal; Step S32: Control the turntable to rotate around the azimuth axis to make the antenna point For the second horizontal support leg or the fourth horizontal support leg, adjust the first horizontal support leg and/or the third horizontal support leg so that the first spirit level indicates level.

Further, step S4 specifically includes the following steps: Step S41: Control the turntable to rotate around the azimuth axis so that the antenna points to the first horizontal leg, and record the reading X1 of the second level; then point the antenna to the second horizontal leg, and record the first horizontal leg The reading X2 of the second horizontal instrument; step S42, comparing X1 and X2, when X1>X2, adjust the supporting feet at the end of the first horizontal support leg and the third horizontal support leg, so that the first horizontal support leg and the third horizontal support leg rise High, and maintain the level indicated by the first level meter; when X2>X1, adjust the supporting feet at the ends of the second level leg and the fourth level leg to raise the second level leg and the fourth level leg, and Maintain the level indicated by the first level meter; Step S43: Repeat Step S41 and Step S42 to make X1=X2.

Further, the end of the horizontal support leg away from the central column is provided with a screw hole extending in the vertical direction, and the support leg is provided with a threaded shaft matching the screw hole.

According to the dynamic leveling method of the ultra-statically indeterminate antenna support of the present invention, the gravity moment of the antenna reaches the maximum by pointing the antenna at 0°, and by adjusting each horizontal leg, the first spirit level is indicated as horizontal in each direction, thereby adjusting the turntable It is in a horizontal state; then, while maintaining the level indicated by the first level, by adjusting the supporting feet, the readings of the second level are consistent when the antenna is in all directions, so that the stiffness of each horizontal leg is consistent, that is, indirectly adjust each horizontal support. The force of the legs is consistent, which improves the stability of the system.

Description of drawings

The accompanying drawings constituting a part of this application are used to provide further understanding of the present invention, and the schematic embodiments and descriptions of the present invention are used to explain the present invention, and do not constitute an improper limitation of the present invention. In the attached picture:

Fig. 1 is a schematic structural view of a statically indeterminate antenna support according to the present invention; and

Fig. 2 is a partial enlarged view at the mark I in Fig. 1 .

Detailed ways

The present invention will be described in detail below with reference to the accompanying drawings and examples.

As shown in Fig. 1 and Fig. 2, according to a kind of statically indeterminate antenna bracket dynamic leveling method of the present invention, superstatically indeterminate antenna bracket comprises vertically arranged central column 10, and is arranged on four horizontal supports at the lower end of central column 10 Legs 20, one end of the horizontal leg 20 away from the center column 10 is provided with a support foot 21 adjustable in height along the vertical direction, and the upper end of the center column 10 is provided with a turntable for installing the antenna; the leveling method comprises the following steps: Step S1: The turntable is provided with a first level 31 and a second level 32 whose directions are perpendicular to each other; step S2: adjusting the orientation of the antenna arranged on the turntable to be horizontal; step S3: controlling the turntable to rotate around the azimuth axis so that the antenna points to multiple directions, Adjust the supporting feet 21 at the ends of the four horizontal legs 20 respectively, so that when the antenna points to various directions, the indication of the first spirit level 31 is all level; A level 31 indicates level, and the supporting feet 21 at the ends of the four horizontal legs 20 are adjusted so that the readings indicated by the second level 32 in all directions are consistent. According to the dynamic leveling method of the statically indeterminate antenna support of the present invention, by pointing the antenna at 0°, its gravity moment reaches the maximum, and by adjusting each horizontal leg 20, the first spirit level 31 is indicated as horizontal in each direction, thereby Adjust the turntable to be in a horizontal state; then maintain the first level 31 to indicate a horizontal state, by adjusting each support foot 21, the readings of the second level 32 are kept consistent when the antenna is in each position, so that the rigidity of each level leg 20 is consistent, That is to indirectly adjust the stress of each horizontal support leg 20 to be consistent, thereby improving the stability of the system.

Preferably, step S3 specifically includes the following steps: Step S31: taking the four horizontal legs 20 as the first horizontal leg, the second horizontal leg, the third horizontal leg and the fourth horizontal leg in turn, controlling the turntable to rotate around the azimuth axis Rotate to make the antenna point to the first horizontal leg or the third horizontal leg, adjust the second horizontal leg and/or the fourth horizontal leg, so that the first spirit level 31 is indicated as horizontal; Step S32: Control the turntable to rotate around the azimuth axis so that The antenna points to the second horizontal leg or the fourth horizontal leg, and the first horizontal leg and/or the third horizontal leg is adjusted so that the first spirit level 31 is indicated as horizontal. So that the turntable is in a horizontal state.

Since the antenna bracket is a statically indeterminate structure, the force on the four horizontal legs is related to the structural deformation. It is possible that two horizontal outriggers bear a lot of force, while the other two horizontal outriggers bear little force, which is not conducive to the stability of the system. Therefore, step S4 is used to adjust the stiffness of the support in all directions (that is, the stiffness of each horizontal leg is consistent), thereby indirectly making the force of the four horizontal legs consistent.

Specifically, step S4 includes the following steps: Step S41: Control the turntable to rotate around the azimuth axis to make the antenna point to the first horizontal leg, and record the reading X1 of the second level meter 32; then point the antenna to the second horizontal leg, and record the first horizontal leg The reading X2 of the leveler 32; step S42, comparing X1 and X2, when X1>X2, it means that the rigidity of the first horizontal support leg and the third horizontal support leg is relatively weak, and these two horizontal support legs need to be promoted, so that The deformation of both increases, thereby increasing the stiffness of both. Similarly, when X2>X1, it means that the rigidity of the second horizontal support leg and the fourth horizontal support leg is relatively weak, and the supporting feet 21 at the ends of the second horizontal support leg and the fourth horizontal support leg are adjusted to make the second horizontal support leg The outrigger and the fourth horizontal outrigger are elevated, so that the deformation and rigidity of the second horizontal outrigger and the fourth horizontal outrigger are increased. During the adjustment process, it is necessary to maintain the first level 31 indicating a horizontal state, so as to prevent the turntable from losing the horizontal state caused by the stiffness adjustment.

Repeat step S41 and step S42 multiple times, so that X1=X2, even if the stiffness of the four horizontal legs is the same, indirectly make the force balance of each horizontal leg, so as to overcome the problem of the instability of the bracket caused by the gravity moment.

Preferably, in order to make the adjustment of each horizontal leg more convenient, the end of each horizontal leg 20 away from the central column 10 is provided with a screw hole extending in the vertical direction, and the supporting foot 21 is provided with a threaded shaft that matches the screw hole, and the thread The upper end of the shaft is provided with a handle that is convenient to rotate, and when the height of each horizontal support leg 20 needs to be adjusted, it is only necessary to rotate the threaded shaft.

From the above description, it can be seen that the above-mentioned embodiments of the present invention have achieved the following technical effects:

According to the dynamic leveling method of the super-statically indeterminate antenna bracket of the present invention, the gravity moment of the antenna reaches the maximum by adjusting the pointing of the antenna to be horizontal, and by adjusting each horizontal leg, the first level is indicated as horizontal in each direction, thereby adjusting The turntable is in a horizontal state; then, while maintaining the horizontal state indicated by the first level meter, by adjusting the supporting legs, the readings of the second level meter are consistent when the antenna is in all directions, so that the stiffness of each level leg is consistent, that is, indirectly adjust each level The force of the outriggers is consistent, which improves the stability of the system.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims (3)

1. A dynamic leveling method for an ultra-static antenna support, characterized in that, said ultra-static antenna support includes a vertically arranged central column (10), and four horizontal bars arranged at the lower end of said central column (10) Legs (20), one end of the horizontal leg (20) away from the central column (10) is provided with a support foot (21) adjustable in height along the vertical direction, and the upper end of the central column (10) is provided with Turntable with mounted antenna; The leveling method includes the following steps: Step S1: setting a first level (31) and a second level (32) on the turntable, indicating directions perpendicular to each other; Step S2: adjusting the antenna pointing set on the turntable to be horizontal; Step S3: Control the turntable to rotate around the azimuth axis so that the antenna points to multiple directions, respectively adjust the supporting feet (21) at the ends of the four horizontal legs (20) so that when the antenna points to each direction, the The indications of the first spirit level (31) are all level; Step S4: continue to control the rotation of the turntable around the azimuth axis so that the antenna points to multiple azimuths, maintain the first level (31) indicated as horizontal, and adjust the supporting feet at the ends of the four horizontal legs (20) ( 21), so that the second spirit level (32) indicates that the readings are consistent when the antenna points to each direction; The step S3 specifically includes the following steps: Step S31: the four horizontal legs (20) are successively the first horizontal leg, the second horizontal leg, the third horizontal leg and the fourth horizontal leg, and the control unit The turntable rotates around the azimuth axis so that the antenna points to the first horizontal leg or the third horizontal leg, and adjusts the second horizontal leg and/or the fourth horizontal leg so that the first level (31) indicates for the level; Step S32: Control the turntable to rotate around the azimuth axis so that the antenna points to the second horizontal leg or the fourth horizontal leg, and adjust the first horizontal leg and/or the third horizontal leg so that the first horizontal leg Spirit level (31) indicates level. 2. The statically indeterminate antenna support dynamic leveling method according to claim 1, wherein said step S4 specifically comprises the following steps: Step S41: Control the turntable to rotate around the azimuth axis so that the antenna points to the first horizontal leg, and record the reading X1 of the second level (32); then point the antenna to the second horizontal leg leg, and record the reading X2 of the second spirit level (32); Step S42, compare X1 and X2, when X1>X2, adjust the supporting feet (21) at the ends of the first horizontal support leg and the third horizontal support leg, so that the first horizontal support leg and the third horizontal support leg are raised, and maintaining said first spirit level (31) indicated as a level; When X2>X1, adjust the supporting feet (21) at the ends of the second horizontal support leg and the fourth horizontal support leg to raise the second horizontal support leg and the fourth horizontal support leg, and maintain the first level (31 ) indicates a level; Step S43: Repeat step S41 and step S42 to make X1=X2. 3. the statically indeterminate antenna support dynamic leveling method according to claim 1, is characterized in that, The end of the horizontal support leg (20) away from the center column (10) is provided with a screw hole extending in the vertical direction, and the support foot (21) is provided with a threaded shaft matching the screw hole.