CN110596663B

CN110596663B - Vehicle-mounted lifting rod platform applied to RCS (remote control system) test of microwave darkroom

Info

Publication number: CN110596663B
Application number: CN201911017737.3A
Authority: CN
Inventors: 赵潮; 仝晓杰; 李国华
Original assignee: Beijing Institute of Environmental Features
Current assignee: Beijing Institute of Environmental Features
Priority date: 2019-10-24
Filing date: 2019-10-24
Publication date: 2021-05-25
Anticipated expiration: 2039-10-24
Also published as: CN110596663A

Abstract

The invention relates to a vehicle-mounted lifting rod platform applied to a microwave anechoic chamber RCS test, which comprises a vehicle chassis, a lifting rod, an azimuth platform, an adjuster, a wave absorbing cover and a limiting snap ring, wherein the lifting rod is erected in the middle of the vehicle chassis, the azimuth platform is erected at the top of the lifting rod, the adjuster is slidably connected outside the lifting rod, the wave absorbing cover is erected on the adjuster, the limiting snap ring is inserted on the lifting rod at the bottom of the adjuster, the adjuster is positioned at the upper part of the lifting rod, a hinge platform is fixedly connected at four corners of the adjuster, a support rod is hinged on the hinge platform, the wave absorbing cover comprises a ceiling and a side curtain, the ceiling is rectangular cloth, the side curtain is square annular cloth, the side curtain is sewn at the bottom of four sides of the ceiling, the support rod is fixedly connected at the bottom of the ceiling, one end of the support rod is connected with the four corners of the ceiling, so that the end surface of the ceiling is horizontal, the side curtain covers the, and the advantages of bearing, program control lifting and rotating of the test antenna are realized.

Description

Vehicle-mounted lifting rod platform applied to RCS (remote control system) test of microwave darkroom

Technical Field

The invention relates to the technical field of test equipment, in particular to a vehicle-mounted lifting rod platform applied to RCS (remote control system) test in a microwave anechoic chamber.

Background

The requirement of high-precision testing of high stealth targets forces a microwave darkroom to pursue the quiet zone performance of ultralow background level, and the existing methods for reducing the quiet zone background level mainly comprise two types: one is to reduce the additional scattering of the supporting equipment and facilities in the darkroom; the other method filters the background level contribution by a background cancellation technology in a numerical processing mode, and the two methods are combined with each other to ensure the quiet zone performance of the microwave anechoic chamber and maintain the consistency of the background environment.

The lifting platform is used for erecting a test target to enable auxiliary test equipment commonly used by a microwave dark room and is also a main additional scattering source of the RCS (radar cross-sectional area) test microwave dark room.

Therefore, in order to overcome the defects, the vehicle-mounted lifting rod platform applied to the RCS test of the microwave darkroom needs to be provided.

Disclosure of Invention

Technical problem to be solved

The invention aims to solve the technical problem of small test range of a fixed lifting platform.

(II) technical scheme

In order to solve the technical problem, the invention provides a vehicle-mounted lifting rod platform applied to a microwave anechoic chamber RCS test, which comprises a vehicle chassis, a lifting rod, a direction platform, an adjuster, a wave absorbing cover and a limit snap ring, wherein the lifting rod is erected in the middle of the vehicle chassis, the direction platform is erected at the top of the lifting rod, the adjuster is connected outside the lifting rod in a sliding manner, the wave absorbing cover is erected on the adjuster, the limit snap ring is inserted on the lifting rod at the bottom of the adjuster, the wave absorbing cover comprises a ceiling and a side curtain, the ceiling is rectangular cloth, the side curtain is square annular cloth, the side curtain is sewn at the bottoms of four sides of the ceiling, the supporting rods are fixedly connected to the bottom of the ceiling, one end of each supporting rod is connected with four corners of the ceiling, so that the end face of the ceiling is horizontal, the side curtain covers a chassis, and the bottom end of the side curtain is abutted to the ground.

By adopting the technical scheme, the lifting rod is arranged on the vehicle, the lifting rod with the antenna can be transported to any area of the microwave darkroom by the driving of the vehicle, so that the antenna can be placed in each area of the microwave darkroom by the lifting rod, the test range is enlarged, a plurality of groups of experimental reference data are added for experiments, and the experiment precision is improved; the wave absorption cover is arranged to absorb electromagnetic waves during an experiment, so that the problem that the electromagnetic waves are transmitted to parts such as a chassis to generate reflection to influence the experiment precision is avoided.

As a further explanation of the present invention, preferably, the ceiling and the side curtain are both made of nylon oxford fabric, the thickness of the ceiling is 1mm to 3mm, and the thickness of the side curtain is less than 1 mm.

By adopting the technical scheme, the ceiling can have certain hardness by adopting the thicker oxford fabric, so that the ceiling can be supported into a square plate shape when the supporting rods are completely opened, and the influence of the middle depression of the ceiling on the coverage of the side curtain and the chassis is avoided; the side curtain is less in thickness, is convenient to fold, is lighter in weight, can reduce the burden of the supporting rod, and avoids the supporting rod to deform.

As a further explanation of the present invention, preferably, ferrite wave-absorbing coatings are sprayed on the exterior of both the ceiling and the side curtain, and the spraying thickness is between 1mm and 5 mm.

By adopting the technical scheme, the wave-absorbing cover can absorb the transmitted electromagnetic waves, the influence of electromagnetic wave reflection on the experimental precision is avoided, the wave-absorbing cover can absorb the electromagnetic waves in a large range due to the large thickness, and the practicability of the wave-absorbing cover is improved.

As a further explanation of the present invention, preferably, the bottom of the outer side of the hinge table is fixedly connected with a limiting rod, and the supporting rod extends outward to contact with the limiting rod, so that the length direction of the supporting rod is horizontal.

Through adopting above-mentioned technical scheme, set up the gag lever post butt bracing piece, play the supporting role, avoid the bracing piece excessively to overturn and can not prop up the ceiling completely.

As a further description of the present invention, preferably, the limiting snap rings are n-shaped frames, the middle portions of the limiting snap rings are fixedly connected with the insertion blocks, the outer walls of the two sides of the lifting rod are respectively provided with an insertion opening, the insertion blocks of the two limiting snap rings are respectively inserted into the insertion openings, and the inner end surfaces of the two limiting snap rings are abutted against the outer walls of the lifting rod, so that the two limiting snap rings are combined into an integral square ring.

Through adopting above-mentioned technical scheme, set up spacing snap ring and can fix the regulator on lifter upper portion, avoid the regulator whereabouts and can't prop up the wave absorption cover.

As a further explanation of the present invention, preferably, the two ends of the limiting snap ring are fixedly connected with magnetic sheets, and the magnetic poles of the magnetic sheets at the two ends of the same limiting snap ring are opposite.

Through adopting above-mentioned technical scheme, with the mutual butt of the opposite one end of two spacing snap ring magnetic poles, utilize magnetism to hold spacing snap ring, avoid the inserted block on the spacing snap ring to separate with the socket.

As a further explanation of the present invention, preferably, the outer wall of the lifting rod is fixedly connected with a square annular top platform, the regulator moves upwards to abut against the bottom end face of the top platform, four corners of the top platform are provided with clamping grooves, and the width of the clamping grooves is greater than that of the supporting rods.

By adopting the technical scheme, the top platform is arranged to prevent the regulator from excessively moving upwards to enable the side curtain to be spaced from the ground, and the wave-absorbing cover is ensured to completely cover the chassis.

As a further description of the present invention, preferably, the azimuth table includes an azimuth motor and a connecting flange, the azimuth motor is fixedly connected to the top of the lifting rod, the axis of the azimuth motor is horizontal, and the connecting flange is rotatably connected to the azimuth motor.

Through adopting above-mentioned technical scheme, can provide the diversified motion of multi-angle for the antenna, the motion of cooperation automobile body further improves the test range of antenna.

As a further description of the present invention, it is preferable that mecanum wheels are rotatably connected to the front and rear sides of the chassis, and an included angle between an axis of the rubber wheel on the mecanum wheel and an axis of the spindle is 45 °.

By adopting the technical scheme, the chassis can realize multidirectional displacement without turning, the variable of a horizontal azimuth angle generated when the chassis turns is reduced, and the accurate acquisition of data is facilitated.

(III) advantageous effects

The technical scheme of the invention has the following advantages:

1. according to the invention, the lifting rod is placed on the vehicle capable of running in multiple directions, so that the antenna on the lifting rod can be arranged in each area of the microwave darkroom, the test range is improved, and the experiment precision is improved;

2. the wave-absorbing cover that the setting was supported by the bracing piece can not only absorb the electromagnetic wave when the experiment, still can accomodate the wave-absorbing cover when not experimenting, avoids the wave-absorbing cover to shelter from the sight, makes the automobile body can advance smoothly.

Drawings

FIG. 1 is an experimental state diagram of the present invention;

FIG. 2 is a bottom view of the present invention;

FIG. 3 is an enlarged view of A in FIG. 2;

FIG. 4 is a top view of the present invention;

FIG. 5 is an enlarged view of B in FIG. 4;

FIG. 6 is a side view of the present invention;

fig. 7 is a diagram of a mecanum wheel of the present invention.

In the figure: 1. a chassis; 11. a Mecanum wheel; 12. a drive motor; 13. a driving stool; 14. a steering mechanism; 15. a master controller; 16. leveling and supporting; 2. a lifting rod; 21. an air pump; 22. a top stage; 23. a card slot; 3. an azimuth stage; 31. an azimuth motor; 32. a connecting flange; 4. a regulator; 41. a hinging table; 42. a support bar; 43. a limiting rod; 5. a wave absorbing cover; 51. a ceiling; 52. a side curtain; 6. a limit snap ring; 61. inserting a block; 62. a magnetic sheet.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, 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 some, but not all, embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.

The utility model provides a be applied to on-vehicle lifter platform of microwave anechoic chamber RCS test, combines figure 1, figure 2 and figure 3, including vehicle chassis 1, lifter 2, position platform 3, regulator 4, inhale ripples cover 5 and spacing snap ring 6, lifter 2 erects at vehicle chassis 1 middle part, and position platform 3 erects at lifter 2 top, and 4 sliding connection of regulator are outside lifter 2, and inhale ripples cover 5 and erect on regulator 4, and spacing snap ring 6 is pegged graft on lifter 2 of 4 bottoms of regulator.

With reference to fig. 2, 6 and 7, the chassis 1 is a square plate, the bottoms of the front side and the rear side of the chassis 1 are fixedly connected with driving motors 12, the driving motors 12 are rotatably connected with mecanum wheels 11, and an included angle between the axis of the rubber wheels on the mecanum wheels 11 and the axis of the main shaft is 45 degrees, so that the chassis 1 can realize multidirectional displacement without turning, the variable of a horizontal azimuth angle generated when the chassis 1 turns is reduced, and accurate data acquisition is facilitated; the middle part of the top end of the chassis 1 is fixedly connected with a driving stool 13, the chassis 1 at the front end of the driving stool 13 is fixedly connected with a steering mechanism 14, the steering mechanism 14 is a steering wheel, the chassis 1 at the rear end of the driving stool 13 is fixedly connected with a master controller 15, a PLC and a battery are arranged in the master controller 15, and the master controller 15 is electrically connected with the driving motor 12 and the steering mechanism 14 so as to control the movement direction of the chassis 1; leveling supports 16 are fixedly connected to two sides of the middle of the chassis 1, the leveling supports 16 can be hydraulic cylinders, the leveling supports 16 extend out to enable the Mecanum wheels 11 to be lifted, and the Mecanum wheels 11 are prevented from being crushed when antennas and other equipment are hung on the lifting rods.

With reference to fig. 2 and 4, the lifting rod 2 is a conventional pneumatic telescopic rod, the bottom of the lifting rod 2 is fixedly connected with the middle part of the chassis 1, the chassis 1 is fixedly connected with an air pump 21 at one side of the lifting rod 2, the air pump 21 is communicated with the lifting rod 2, and the air pump 21 leads the lifting rod 2 to extend or shorten by ventilating or exhausting air into the lifting rod 2; position platform 3 includes position motor 31 and flange 32, and position motor 31 links firmly at 2 tops of lifter, and 31 axis levels in position motor, flange 32 rotate to be connected on position motor 31, and the antenna can load on flange 32, makes position platform 3 can provide the multi-angle diversified motion for the antenna, and the motion of cooperation automobile body further improves the test range of antenna.

With reference to fig. 2 and 3, the length direction of the lifting rod 2 is vertical, the adjuster 4 can slide to the upper part of the lifting rod 2, the four corners of the adjuster 4 are fixedly connected with a hinge table 41, the hinge table 41 is hinged with a support rod 42, and the support rod 42 is a square slender rod; the bottom of the outer side of the hinge table 41 is fixedly connected with a limiting rod 43, and the support rod 42 extends outwards to be in contact with the limiting rod 43, so that the support rod 42 is horizontal in the length direction.

With reference to fig. 1 and 3, the wave-absorbing cover 5 includes a ceiling 51 and side curtains 52, the ceiling 51 is made of rectangular cloth, the side curtains 52 are made of square annular cloth, the side curtains 52 are sewn at the bottoms of four sides of the ceiling 51, the ceiling 51 and the side curtains 52 are both made of nylon oxford cloth, the thickness of the ceiling 51 is 1mm to 3mm, the thickness of the side curtains 52 is less than 1mm, ferrite wave-absorbing paint is sprayed on the outsides of the ceiling 51 and the side curtains 52, the spraying thickness is between 1mm to 5mm, the wave-absorbing cover 5 can absorb the transmitted electromagnetic waves, the influence of electromagnetic wave reflection on the experimental precision is avoided, and the larger thickness can enable the wave-absorbing cover 5 to absorb the electromagnetic waves in a large frequency range, and the practicability of the wave-absorbing cover 5 is improved; the supporting rod 42 is fixedly connected to the bottom of the ceiling 51, one end of the supporting rod 42 is connected with four corners of the ceiling 51, the side curtain 52 covers the chassis 1, and the bottom end of the side curtain 52 is abutted to the ground.

With reference to fig. 2 and 3, the limiting snap ring 6 is a portal frame, the middle part of the limiting snap ring 6 is fixedly connected with an insert 61, the outer walls of the two sides of the lifting rod 2 are respectively provided with a socket, the insert 61 of the two limiting snap rings 6 are respectively inserted into the sockets, the inner end surfaces of the two limiting snap rings 6 are abutted against the outer wall of the lifting rod 2, so that the two limiting snap rings 6 are combined into an integral square ring, the two ends of the limiting snap ring 6 are fixedly connected with magnetic sheets 62, the magnetic sheets 62 at the two ends of the same limiting snap ring 6 have opposite magnetic poles, the opposite ends of the two limiting snap rings 6 are abutted against each other, the two limiting snap rings 6 are attracted by the magnetism of the magnetic sheets 62, and the; the limiting clamping ring 6 is arranged to fix the regulator 4 on the upper part of the lifting rod 2, so that the regulator 4 is prevented from falling down and the wave absorbing cover 5 cannot be supported.

With reference to fig. 2 and 4, the lifting rod 2 is placed on the chassis 1 of the vehicle capable of running in multiple directions, so that the antennas on the lifting rod 2 can be arranged in various areas of a microwave darkroom, the test range is improved, multiple groups of experimental reference data are added for experiments, and the experimental precision is improved; after the chassis 1 of the vehicle is moved, the regulator 4 slides to the top of the lifting rod 2 from the gap between the air pump 21 and the lifting rod 2, the limiting clamp ring 6 is inserted into the socket to support the regulator 4, then the support rod 42 is unfolded to enable the support rod 42 to be abutted against the limiting rod 43, the limiting rod 43 is arranged to play a supporting role, and the situation that the ceiling 41 cannot be completely supported due to the fact that the support rod 42 is turned excessively is avoided; then the side curtain 52 is pulled down from the top of the ceiling 51 until the side curtain 52 covers the chassis 1 and the bottom of the side curtain 52 is abutted to the ground; the wave absorbing cover 5 is arranged to absorb electromagnetic waves during an experiment, so that the problem that the electromagnetic waves are transmitted to parts such as the chassis 1 to be reflected to influence the accuracy of the experiment is solved, meanwhile, the thicker oxford fabric is adopted to enable the ceiling 51 to have certain hardness, so that the ceiling 51 can be supported into a square plate shape when the support rods 42 are completely opened, and the influence of the depression of the middle part of the ceiling 51 on the covering of the side curtain 52 and the chassis 1 is avoided; the side curtain 52 has a small thickness, is convenient to fold, has light weight, can reduce the burden of the supporting rod 43, and avoids the deformation of the supporting rod 42.

With reference to fig. 4 and 5, the outer wall of the lifting rod 2 is fixedly connected with a square annular top platform 22, the regulator 4 moves upwards to abut against the bottom end face of the top platform 22, clamping grooves 23 are formed in four corners of the top platform 22, the width of each clamping groove 23 is larger than that of each supporting rod 42, the top platform 22 is arranged to prevent the regulator 4 from moving upwards excessively to enable the side curtains 52 to be spaced from the ground, and the wave absorbing cover 5 is ensured to completely cover the chassis 1; when the automobile body needs to be moved, the side curtain 52 only needs to be raised and folded at the top of the ceiling 51, the limiting snap ring 6 is detached, the supporting rod 42 is folded, the supporting rod 42 is enabled to clamp the wave absorbing cover 5 to be embedded into the clamping groove 23, then the regulator 4 slides into a gap between the air pump 21 and the lifting rod 2, and finally an experimenter can sit on the driving stool 13 to move the chassis 1 through operating the steering mechanism 14, so that the automobile body and the lifting rod 2 are moved.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims

1. The utility model provides a be applied to on-vehicle lifter platform of microwave anechoic chamber RCS test which characterized in that: comprises a chassis (1), a lifting rod (2), a position platform (3), an adjuster (4), a wave-absorbing cover (5) and a limit snap ring (6), wherein the lifting rod (2) is erected in the middle of the chassis (1), the position platform (3) is erected at the top of the lifting rod (2), the adjuster (4) is connected outside the lifting rod (2) in a sliding manner, the wave-absorbing cover (5) is erected on the adjuster (4), the limit snap ring (6) is inserted on the lifting rod (2) at the bottom of the adjuster (4), wherein,

the regulator (4) is positioned at the upper part of the lifting rod (2), a hinged table (41) is fixedly connected at the four corners of the regulator (4), a support rod (42) is hinged on the hinged table (41), the wave-absorbing cover (5) comprises a ceiling (51) and side curtains (52), the ceiling (51) is rectangular cloth, the side curtains (52) are square annular cloth, the side curtains (52) are sewn at the bottoms of the four sides of the ceiling (51), the support rod (42) is fixedly connected at the bottom of the ceiling (51), one end of the support rod (42) is connected with the four corners of the ceiling (51), so that the end surface of the ceiling (51) is horizontal, the side curtains (52) cover the chassis (1), and the bottom end of the side curtains (52) is abutted to the ground;

the limiting snap rings (6) are in a shape of a Chinese character 'men', the middle parts of the limiting snap rings (6) are fixedly connected with the inserting blocks (61), the outer walls of the two sides of the lifting rod (2) are respectively provided with an inserting opening, the inserting blocks (61) of the two limiting snap rings (6) are respectively inserted into the inserting openings, the inner end surfaces of the two limiting snap rings (6) are abutted against the outer walls of the lifting rod (2), so that the two limiting snap rings (6) are combined into an integral square ring; the two ends of the limiting snap ring (6) are fixedly connected with magnetic sheets (62), and the magnetic sheets (62) at the two ends of the same limiting snap ring (6) have opposite magnetic poles.

2. The vehicle-mounted lifting rod platform applied to the RCS test of the microwave anechoic chamber is characterized in that: the ceiling (51) and the side curtains (52) are both made of nylon oxford cloth, the thickness of the ceiling (51) is 1-3 mm, and the thickness of the side curtains (52) is less than 1 mm.

3. The vehicle-mounted lifting rod platform applied to the RCS test of the microwave anechoic chamber is characterized in that: ferrite wave-absorbing coating is sprayed on the outer surfaces of the ceiling (51) and the side curtains (52), and the spraying thickness is between 1mm and 5 mm.

4. The vehicle-mounted lifting rod platform applied to the RCS test of the microwave anechoic chamber is characterized in that: the bottom of the outer side of the hinged platform (41) is fixedly connected with a limiting rod (43), and the supporting rod (42) extends outwards to be in contact with the limiting rod (43) so that the supporting rod (42) is horizontal in the length direction.

5. The vehicle-mounted lifting rod platform applied to the RCS test of the microwave anechoic chamber is characterized in that: the outer wall of the lifting rod (2) is fixedly connected with a square annular top platform (22), the regulator (4) moves upwards to abut against the bottom end face of the top platform (22), four corners of the top platform (22) are provided with clamping grooves (23), and the width of each clamping groove (23) is larger than that of the supporting rod (42).

6. The vehicle-mounted lifting rod platform applied to the RCS test of the microwave anechoic chamber is characterized in that: the azimuth platform (3) comprises an azimuth motor (31) and a connecting flange (32), the azimuth motor (31) is fixedly connected to the top of the lifting rod (2), the axis of the azimuth motor (31) is horizontal, and the connecting flange (32) is rotatably connected to the azimuth motor (31).

7. The vehicle-mounted lifting rod platform applied to the RCS test of the microwave anechoic chamber is characterized in that: the front side and the rear side of the chassis (1) are rotatably connected with Mecanum wheels (11), and the included angle between the axis of the rubber wheel on the Mecanum wheels (11) and the axis of the main shaft is 45 degrees.