CN111707876A - A diaxon straightness quick adjustment mechanism that hangs down for large-scale antenna near field tester - Google Patents
A diaxon straightness quick adjustment mechanism that hangs down for large-scale antenna near field tester Download PDFInfo
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- CN111707876A CN111707876A CN202010603525.XA CN202010603525A CN111707876A CN 111707876 A CN111707876 A CN 111707876A CN 202010603525 A CN202010603525 A CN 202010603525A CN 111707876 A CN111707876 A CN 111707876A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R29/00—Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
- G01R29/08—Measuring electromagnetic field characteristics
- G01R29/10—Radiation diagrams of antennas
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C15/00—Surveying instruments or accessories not provided for in groups G01C1/00 - G01C13/00
- G01C15/002—Active optical surveying means
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C15/00—Surveying instruments or accessories not provided for in groups G01C1/00 - G01C13/00
- G01C15/12—Instruments for setting out fixed angles, e.g. right angles
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/04—Housings; Supporting members; Arrangements of terminals
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
The invention discloses a two-axis verticality rapid adjusting mechanism for a large antenna near-field tester, which relates to the technical field of antenna near-field testing systems and comprises a horizontal mechanism, a vertical mechanism and a back frame, wherein a horizontal sliding seat is slidably arranged at the top of the horizontal mechanism, meanwhile, the vertical mechanism and the back frame are fixedly arranged at the top of the horizontal sliding seat, a triangular back frame is used for supporting the vertical mechanism, a connecting piece is used for fixing the waist of a vertical stand column, a spherical hinge is arranged below the vertical stand column to serve as a support for rotation adjustment, and an adjusting sizing block is used for adjusting the verticality; reduce rigidity and the precision demand to vertical mechanism, practice thrift the cost and realize the lightweight, the ordinary type structure of falling "T" of comparing simultaneously utilizes back of the body frame structure as the support of perpendicular stand, has increased the fixed point of upper end, promotes entire system's dynamic behavior to through laser tracker test, the mode that the adjustment parallels was adjusted is adjusted, has the advantage of rapidity, easy operation.
Description
Technical Field
The invention relates to the technical field of antenna near field test systems, in particular to a quick two-axis perpendicularity adjusting mechanism for a large antenna near field tester.
Background
The antenna near field tester is also called a scanning frame, along with the rapid development of aerospace technology, the performance requirements on airborne, missile-borne and satellite-borne antennas are higher and higher, and the antenna near field tester is more and more important as important measuring equipment for developing high-performance antennas.
The antenna near-field tester mainly comprises a horizontal (X-axis) mechanism and a vertical (Y-axis) mechanism, wherein the two axes are orthogonal and vertical. The test probe precisely moves along two axes according to a fixed curve by electric control, and has different requirements on scanning speed, positioning precision and scanning stroke due to different wave bands and sizes of the tested antenna. The antenna near-field tester is divided into large-scale (>12 m), medium-scale (4-8 m), small-scale (1-4 m) and subminiature (0-1 m) according to the vertical effective stroke.
Because of the use requirement, the vertical direction (Y axis) of the antenna near-field tester needs to be orthogonal to the horizontal mechanism (X axis), generally requires to be at the vertical maximum stroke position, the perpendicularity error of two axes needs to be controlled to be about 0.1mm, the traditional two-axis perpendicularity adjusting method mainly depends on the adjustment of an installation adjusting bolt below a vertical upright post, the small adjustment of the perpendicularity is realized by depending on the self rigidity of the upright post, the high precision requirement is difficult to realize, and meanwhile, certain potential safety hazard exists for large-scale equipment.
The stroke of a vertical mechanism of the large antenna near-field tester is more than 12m, and the vertical direction is a load in the horizontal direction, so that the light weight is required to be realized as much as possible for controlling the power scale, the weight is usually about several tons, the self rigidity is difficult to be infinite due to the limitation of the weight, meanwhile, the processing is usually in the horizontal state during processing, and certain bending deformation is inevitably generated after erection due to state change, so that the perpendicularity of two shafts has errors, a certain processing error also exists on the mounting surface of the vertical mechanism, the perpendicularity of the two shafts is difficult to guarantee, in sum, for large near-field testing equipment, the guarantee of the orthogonal precision is difficult, and the difficulty in the development of the large antenna near-field tester is also formed.
Disclosure of Invention
Aiming at the problems in the prior art, the invention aims to provide a two-axis perpendicularity quick adjusting mechanism for a large-scale antenna near-field tester, which can realize quick adjustment of the perpendicularity of a vertical mechanism and a horizontal mechanism, has the advantages of high precision, rapidity, easiness in operation and low risk, and can improve the light weight level and the overall dynamic performance of the whole system.
In order to achieve the purpose, the invention provides the following technical scheme: the near-field tester comprises a horizontal mechanism, a vertical mechanism and a back frame, wherein the horizontal mechanism is a horizontal shaft of a large-scale antenna near-field tester and consists of two parallel horizontal bases, a horizontal guide rail and a series of driving devices, the horizontal guide rail is arranged on the horizontal base, a horizontal sliding seat is arranged above the horizontal slide rail of the horizontal mechanism in a sliding manner, the horizontal sliding seat horizontally moves along the horizontal slide rail, the vertical mechanism comprises a vertical upright post, a vertical guide rail and a series of driving devices, the vertical upright post is arranged at the top of the horizontal sliding seat, a group of vertical guide rails is arranged on the back side wall of the vertical upright post, a sliding plate is arranged on the vertical slide rail in a sliding manner, the back frame is fixedly arranged on the front side; three angle departments in the top of horizontal sliding seat are fixed mounting respectively and are provided with three adjusting parallels, back of the body frame is fixed mounting at the top of adjusting parallels, and the left side end fixed mounting of horizontal sliding seat has central spherical hinge simultaneously, and the lower extreme fixed part fixed mounting of central spherical hinge is at the top of horizontal sliding seat to the upper end fixed part fixed mounting of central spherical hinge is in the bottom of the vertical column of vertical mechanism.
As a further scheme of the invention: the vertical upright post of the vertical mechanism is of a rectangular hollow tubular structure, and the vertical sliding plate is of a plate-shaped structure and is installed on the vertical guide rail pair through screw connection.
As a further scheme of the invention: the back frame is of a triangular truss structure, the lower end of the back frame is installed on the adjusting sizing block, meanwhile, an installation hole for installing a connecting plate for the vertical mechanism is reserved at the upper end of the back frame, and the vertical mechanism is fixedly installed on the side wall of the back frame through a connecting piece.
As a further scheme of the invention: the central spherical hinge is a common large-bearing spherical joint, the upper end fixing part and the lower end fixing part can be detached and are provided with mounting holes, and the maximum rotation angle range is 20 degrees.
As a further scheme of the invention: the cushion block is of a cylindrical hollow structure, and the middle of the cushion block is used for penetrating through a mounting screw.
As a further scheme of the invention: the adjusting sizing block is a standard leveling mechanism special for the machine tool, and the height of the upper equipment is adjusted by manually rotating the screw rod.
As a still further scheme of the invention: the laser tracker is matched with the system and is a FARO or other brand laser tracker or other equipment capable of realizing perpendicularity test, and has the function of perpendicularity test.
The utility model provides a diaxon straightness guiding mechanism that hangs down for on large-scale antenna near field tester, concrete operating procedure as follows:
the method comprises the following steps: firstly, mounting three adjusting sizing blocks at three corresponding corners of a horizontal sliding seat;
step two: mounting the back frame on the adjusting sizing block;
step three: mounting the connecting piece on the upper end of the back frame;
step four: mounting a lower end fixing part of the central spherical hinge at a corresponding position of the horizontal sliding seat;
step five: mounting the upper end fixing part of the central spherical hinge at the central position of the lower end of the vertical upright column in the horizontal state of the vertical upright column;
step six: erecting the vertical upright post, and installing the upper end fixing part of the central spherical hinge on the lower end fixing part to ensure that the central spherical hinge can freely rotate;
step seven: fixing the corresponding position of the upper end of the vertical upright column on the connecting piece;
step eight: testing the verticality of the two shafts by a laser tracker, and accurately adjusting by using three adjusting sizing blocks below the back frame according to the inclination condition;
step nine: repeatedly testing the verticality condition, and finishing adjustment after the verticality condition is qualified;
step ten: after adjustment, the distances between four corners of the lower end of the vertical column and the mounting surface of the lower end of the horizontal sliding seat are tested, cushion blocks are prepared, and then fixing screws are screwed in, so that the vertical mechanism is ensured to be fixed stably.
Compared with the prior art, the invention has the beneficial effects that:
the requirements on the rigidity and precision of a vertical mechanism are reduced, the cost is saved more easily, and the light weight is realized;
compared with a common inverted T-shaped structure, the back frame structure is used as a support of the vertical upright post, so that the fixed point at the upper end is increased, and the dynamic performance of the whole system can be improved;
and (III) adjustment is performed by testing through a laser tracker and adjusting a sizing block, so that the device has the advantages of rapidity, easiness in operation and low risk.
Drawings
Fig. 1 is a first structural schematic diagram of the present invention.
Fig. 2 is a second structural schematic diagram of the present invention.
Fig. 3 is a partial enlarged view of the present invention at a.
Fig. 4 is a partial enlarged view of the present invention at B.
Fig. 5 is a partial enlarged view of the present invention at C.
Fig. 6 is a schematic view of the center spherical hinge structure of the present invention.
Fig. 7 is a schematic view of the structure of the adjusting sizing block of the present invention.
As shown in the figure: 1. horizontal mechanism, 2, vertical mechanism, 3, back of the body frame, 4, horizontal slide, 5, connecting piece, 6, central ball pivot, 61, upper end fixed part, 62, lower extreme fixed part, 7, cushion, 8, adjustment parallels.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "sleeved/connected," "connected," and the like are to be construed broadly, e.g., "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1 to 7, in the embodiment of the present invention, a two-axis verticality fast adjusting mechanism for a large antenna near-field tester includes a horizontal mechanism 1, a vertical mechanism 2 and a back frame 3, where the horizontal mechanism 1 is a horizontal axis of the large antenna near-field tester, and is composed of two parallel horizontal bases, a horizontal guide rail mounted thereon and a series of driving devices, a horizontal sliding seat 4 is slidably mounted above the horizontal slide rail of the horizontal mechanism 1, the horizontal sliding seat 4 horizontally moves along the horizontal slide rail, the vertical mechanism 2 includes a vertical column and a vertical guide rail, and a series of driving devices, where the vertical column is mounted on the top of the horizontal sliding seat 4, a set of vertical guide rails is mounted on the back side wall of the vertical column, a sliding plate is slidably mounted on the vertical slide rail, and the back frame 3 is fixedly mounted on the front side of the vertical mechanism 2, the back frame 3 is arranged at the top of the horizontal sliding seat 4 and provides an auxiliary supporting function for the vertical mechanism 2; three angle departments in top of horizontal sliding seat 4 respectively fixed mounting have three adjustment parallels 8, back of the body frame 3 fixed mounting is at the top of adjustment parallels 8, and the left side tip fixed mounting of horizontal sliding seat 4 has central ball pivot 6 simultaneously, and the lower extreme fixed part 62 fixed mounting of central ball pivot 6 is at the top of horizontal sliding seat 4 to the upper end fixed part 61 fixed mounting of central ball pivot 6 is in the bottom of the vertical column of vertical mechanism 2, thereby makes vertical mechanism 2 can revolve around central ball pivot 6.
The vertical upright post of the vertical mechanism 2 is of a rectangular hollow tubular structure, and the vertical sliding plate is of a plate-shaped structure and is mounted on the vertical guide rail pair through screw connection and can move up and down along the vertical guide rail pair.
The back frame 3 is of a triangular truss structure, the lower end of the back frame is installed on the adjusting sizing block 8, meanwhile, a mounting hole for mounting a connecting plate for the vertical mechanism 2 is reserved at the upper end of the back frame 3, the vertical mechanism 2 is fixedly installed on the side wall of the back frame 3 through the connecting piece 5, and auxiliary support is provided for the vertical mechanism.
Preferably, the central spherical hinge 6 is a common large-bearing spherical joint, the upper end fixing part and the lower end fixing part can be detached and are provided with mounting holes, and the maximum rotation angle range is 20 degrees.
Preferably, the cushion block 7 is a cylindrical hollow structure, the middle of the cushion block is used for penetrating a mounting screw, and the length of the cushion block is assembled according to field actual measurement.
Preferably, the adjusting sizing block 8 is a standard leveling mechanism special for a machine tool, and the height of the upper equipment is adjusted by manually rotating a screw.
Preferably, the laser tracker is matched with the invention, is a FARO or other brand laser tracker or other equipment capable of realizing perpendicularity test, has the perpendicularity test function, can vividly test out the out-of-tolerance position of perpendicularity, and is convenient for quickly adjusting the perpendicularity.
A triangular back frame 3 is used for supporting, and a connecting piece 5 is used for fixing the vertical upright post in a waist blocking way; a central spherical hinge 6 is arranged below the vertical upright post to be used as a support for rotary adjustment; the verticality is adjusted by using an adjusting sizing block 8.
It should be noted that, the working principle and the installation manner of the driving devices in the horizontal mechanism 1 and the vertical mechanism 2 both adopt the prior art, which is common knowledge of those skilled in the art, and thus, no further description is provided herein.
According to the preferred embodiment provided by the invention, the two-axis perpendicularity adjusting mechanism used on the large antenna near-field tester comprises the following specific operation steps:
the method comprises the following steps: firstly, mounting 8 (3) adjusting sizing blocks at three corresponding corners of a horizontal sliding seat 4;
step two: mounting the back frame 3 on the adjusting sizing block 8;
step three: mounting the connecting piece 5 at the upper end of the back frame 3;
step four: mounting the lower end fixing part of the central spherical hinge 6 at the corresponding position of the horizontal sliding seat 4;
step five: the upper end fixing part 61 of the central spherical hinge 6 is arranged at the central position of the lower end of the vertical upright column in the horizontal state of the vertical upright column;
step six: erecting the vertical upright column, and installing an upper end fixing part 61 of the central spherical hinge 6 on a lower end fixing part 62 to ensure that the central spherical hinge 6 can freely rotate;
step seven: fixing the corresponding position of the upper end of the vertical upright column on the connecting piece 5;
step eight: testing the verticality of the two shafts by a laser tracker, and accurately adjusting by using three adjusting sizing blocks 8 below the back frame according to the inclination condition;
step nine: repeatedly testing the verticality condition, and finishing adjustment after the verticality condition is qualified;
step ten: after adjustment, the distances between four corners of the lower end of the vertical column and the mounting surface of the lower end of the horizontal sliding seat 4 are tested, the cushion blocks 7 are prepared, and then the fixing screws are screwed in, so that the vertical mechanism 2 is ensured to be fixed stably.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and/or modifications of the invention can be made, and equivalents and modifications of some features of the invention without departing from the spirit and scope of the invention.
Claims (8)
1. The utility model provides a two shafts hang down straightness quick adjustment mechanism for large-scale antenna near field tester, includes horizontal mechanism (1), vertical mechanism (2) and back of the body frame (3), its characterized in that: the horizontal mechanism (1) is a horizontal shaft of a large-scale antenna near-field tester and consists of two parallel horizontal bases, a horizontal guide rail and a series of driving devices, wherein the horizontal guide rail is arranged on the two parallel horizontal bases, the horizontal slide rail is arranged above the horizontal slide rail of the horizontal mechanism (1) in a sliding manner, the horizontal slide rail (4) horizontally moves along the horizontal slide rail, the vertical mechanism (2) comprises a vertical upright post, a vertical guide rail and a series of driving devices, the vertical upright post is arranged at the top of the horizontal slide rail (4), a group of vertical guide rails are arranged on the back side wall of the vertical upright post, a sliding plate is arranged on the vertical slide rail in a sliding manner, a back frame (3) is fixedly arranged on the front side of the vertical mechanism (2), and the back frame (3) is arranged at; three angle departments in top of horizontal sliding seat (4) are fixed mounting respectively has three adjustment parallels (8), back of the body frame (3) fixed mounting is at the top of adjustment parallels (8), and the left side tip fixed mounting of horizontal sliding seat (4) has central ball pivot (6) simultaneously, and lower extreme fixed part (62) fixed mounting of central ball pivot (6) is at the top of horizontal sliding seat (4) to upper end fixed part (61) fixed mounting of central ball pivot (6) is in the bottom of the vertical stand of vertical mechanism (2).
2. The two-axis perpendicularity rapid adjusting mechanism for the large antenna near-field tester as claimed in claim 1, wherein: the vertical upright post of the vertical mechanism (2) is of a rectangular hollow tubular structure, and the vertical sliding plate is of a plate-shaped structure and is installed on the vertical guide rail pair through screw connection.
3. The two-axis perpendicularity rapid adjusting mechanism for the large antenna near-field tester as claimed in claim 1, wherein: the back frame (3) is of a triangular truss structure, the lower end of the back frame is installed on the adjusting sizing block (8), meanwhile, an installation hole for installing a connecting plate for the vertical mechanism (2) is reserved in the upper end of the back frame (3), and the vertical mechanism (2) is fixedly installed on the side wall of the back frame (3) through the connecting piece (5).
4. The two-axis perpendicularity rapid adjusting mechanism for the large antenna near-field tester as claimed in claim 1, wherein: the central spherical hinge (6) is a common large-bearing spherical joint, the upper end fixing part and the lower end fixing part can be detached and are provided with mounting holes, and the maximum rotation angle range is 20 degrees.
5. The two-axis perpendicularity rapid adjusting mechanism for the large antenna near-field tester as claimed in claim 1, wherein: the cushion block (7) is of a cylindrical hollow structure.
6. The two-axis perpendicularity rapid adjusting mechanism for the large antenna near-field tester as claimed in claim 1, wherein: the adjusting sizing block (8) is a standard leveling mechanism special for a machine tool, and the height of the upper equipment is adjusted by manually rotating a screw rod.
7. The two-axis perpendicularity rapid adjusting mechanism for the large antenna near-field tester as claimed in claim 1, wherein: the laser tracker is matched with the system and is a FARO or other brand laser tracker or other equipment capable of realizing perpendicularity test, and has the function of perpendicularity test.
8. The two-axis perpendicularity rapid adjusting mechanism for the large antenna near-field tester as claimed in claim 1, wherein: the two-axis perpendicularity adjusting mechanism for the large-scale antenna near-field tester comprises the following specific operation steps:
the method comprises the following steps: firstly, three adjusting sizing blocks (8) are arranged at three corresponding corners of a horizontal sliding seat (4);
step two: mounting the back frame (3) on the adjusting sizing block (8);
step three: the connecting piece (5) is arranged at the upper end of the back frame (3);
step four: mounting the lower end fixing part of the central spherical hinge (6) at the corresponding position of the horizontal sliding seat (4);
step five: mounting a fixed part (61) at the upper end of a central spherical hinge (6) at the central position of the lower end of the vertical upright column in the horizontal state of the vertical upright column;
step six: erecting the vertical upright column, and installing an upper end fixing part (61) of the central spherical hinge (6) on a lower end fixing part (62) to ensure that the central spherical hinge (6) can freely rotate;
step seven: fixing the corresponding position of the upper end of the vertical upright column on the connecting piece (5);
step eight: the verticality conditions of the two shafts are tested by a laser tracker, and three adjusting sizing blocks (8) below the back frame are used for accurate adjustment according to the inclination conditions;
step nine: repeatedly testing the verticality condition, and finishing adjustment after the verticality condition is qualified;
step ten: after adjustment, the distances between four corners of the lower end of the vertical column and the mounting surface of the lower end of the horizontal sliding seat (4) are tested, a cushion block (7) is prepared, and then a fixing screw is screwed in, so that the vertical mechanism (2) is ensured to be fixed stably.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010603525.XA CN111707876B (en) | 2020-06-29 | 2020-06-29 | A diaxon straightness quick adjustment mechanism that hangs down for large-scale antenna near field tester |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010603525.XA CN111707876B (en) | 2020-06-29 | 2020-06-29 | A diaxon straightness quick adjustment mechanism that hangs down for large-scale antenna near field tester |
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| CN111707876A true CN111707876A (en) | 2020-09-25 |
| CN111707876B CN111707876B (en) | 2023-03-28 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114200218A (en) * | 2021-11-10 | 2022-03-18 | 昆山浩兴电子科技有限公司 | Antenna performance test stabilising arrangement |
| CN114678667A (en) * | 2022-03-31 | 2022-06-28 | 中国电子科技集团公司第十四研究所 | Multi-path microwave rotary joint assembling equipment and assembling method |
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