CN216524685U - Combined device for directly measuring deformation of reflector antenna in wind tunnel test process - Google Patents
Combined device for directly measuring deformation of reflector antenna in wind tunnel test process Download PDFInfo
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- CN216524685U CN216524685U CN202122308863.3U CN202122308863U CN216524685U CN 216524685 U CN216524685 U CN 216524685U CN 202122308863 U CN202122308863 U CN 202122308863U CN 216524685 U CN216524685 U CN 216524685U
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Abstract
The invention provides a combined device for directly measuring the deformation of a reflector antenna in a wind tunnel test process, wherein a fixed plate is tightly connected with a supporting rod in a bolt fastening mode through a clamp and a clamping piece; the four corners below the fixed plate are provided with connecting pieces, the connecting pieces and the antenna to be tested are connected onto the fixed plate through the long bolts, the middle part below the fixed plate is provided with a connecting cylinder, the lower part of the connecting cylinder is connected with a laser head connecting plate, the tail end of the laser head connecting plate is provided with a ranging laser head, a communication optical cable of the ranging laser head sequentially penetrates through wire holes of the connecting cylinder and the fixed plate, a wind tunnel facility wind channel penetrating through the supporting rod transmits a measuring signal to a data acquisition card arranged outside the wind channel in real time, deformation data are recorded in real time through a portable computer, accurate deformation data can be acquired, meanwhile, the safety of an antenna product and a test facility is guaranteed through real-time monitoring data, the antenna deformation measuring period is greatly shortened, and the test cost is reduced.
Description
Technical Field
The invention relates to the field of antennas, in particular to an antenna deformation testing device which is placed in a wind tunnel to adapt to various variable wind speed load test states.
Background
The reflector antenna has the characteristics of high reliability, simple structure, low manufacturing cost, high gain, low side lobe and the like, is typical structural and functional integrated equipment, is a channel for transmitting and receiving electromagnetic energy in a radar system, and plays a key role.
The mechanical structure of the antenna is a carrier for realizing the electrical performance of the antenna, and the reasonable design of the mechanical structure is one of the bases for improving the electrical performance of the antenna. With the development of science and technology, the requirements on the electrical performance of the reflector antenna are becoming more and more severe, and the requirements on the stability and reliability of the electrical performance of the antenna are difficult to meet by the traditional design method only considering the structural strength. The antenna structure must be designed comprehensively from the viewpoint of electromechanical integration, and the good mechanical and electromagnetic properties of the antenna under the severe working environment are guaranteed.
The existing electromechanical coupling design technology mostly depends on a simulation process, but simulation calculation is more ideal, so that the feasibility of design needs to be verified through experiments for the designed structure. In practice, after the antenna is machined and manufactured, the safety of the antenna structure needs to be verified in a wind tunnel laboratory, and due to the fact that the laser measuring device is installed outside the side wall of the wind tunnel, through measuring target displacement and combining the method of calculating the windward theoretical appearance of the antenna, the accuracy of deformation data is low, accurate deformation data cannot be obtained, the reliability of the structure and the electromagnetic performance of the antenna under the action of wind load cannot be accurately evaluated, the results and conclusions of correcting the electrical performance simulation error of the antenna, optimizing the design and verifying the product performance are seriously influenced.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides a combined device for directly measuring the deformation of a reflector antenna in the wind tunnel test process. The method and the device are used for obtaining accurate deformation data of the antenna under the action of various variable wind loads and providing measured data for electromagnetic performance prediction. In order to achieve the purpose, the deformation measuring device of the reflector antenna provided by the invention comprises a combined structure with two functions of fixing the antenna in a wind tunnel facility and measuring the deformation.
The technical scheme adopted by the invention for solving the technical problem is as follows:
a combined device for directly measuring deformation of a reflector antenna in a wind tunnel test process comprises a supporting rod (1) and a fixing plate (2) connected to the supporting rod (1); the fixing plate (2) is tightly connected with the support rod (1) through the clamp (3) and the clamping piece (4) in a bolt fastening mode; four corners below the fixed plate (2) are provided with connecting pieces (5), and the connecting pieces (5) and the antenna to be tested are connected to the fixed plate (2) through long bolts; the middle part of fixed plate (2) below installs connecting cylinder (6), the circle inside being equipped with of connecting cylinder (6) below fixed plate (2) encloses the line hole, laser head connecting plate (7) are connected to connecting cylinder (6) below, terminal installation range finding laser head (8) of laser head connecting plate (7), the communication optical cable of range finding laser head (8) passes connecting cylinder (6) and fixed plate (2) in proper order and crosses behind the line hole, the outer wind tunnel facility wind channel of following bracing piece (1) transmits measuring signal to the data acquisition card of external placement wind channel in real time, record deformation data in real time through portable computer, connecting cylinder (6) stretch into and are tested in the antenna.
The supporting rod (1) is of a columnar structure with flanges at two ends, and through holes are formed in the flanges and used for connecting the side walls of the wind tunnel device; the supporting rod (1) provides the whole displacement resistance capability under the wind load effect for the antenna to be tested, and meanwhile, the test result deviation caused by unstable disturbance possibly formed under the various wind speed changing load effects is avoided.
The fixed plate (2) is of a square structure, and a connecting piece (5) is arranged on the fixed plate (2) and used for connecting the antenna to be tested;
the combined device for directly measuring the deformation of the reflector antenna in the wind tunnel test process comprises two clamps (3), the middle of each clamp (3) is arc-shaped, the outer walls of the two ends of each arc are provided with radially raised lugs, the inner diameter of each arc is the same as the outer diameter of the support rod (1), and the inner surface of each arc is of a saw-toothed characteristic structure, so that the test result deviation caused by the rotation displacement of the antenna around the support rod (1) under the action of wind load is prevented; the two clamps (3) fix the support rod (1) on the fixing plate (2) respectively and are positioned at two opposite edges of the fixing plate (2).
The combined device for directly measuring the deformation of the reflecting surface antenna in the wind tunnel test process comprises two clamping pieces (4), wherein each clamping piece (4) is a strip plate, a boss is arranged in the middle of each clamping piece, an inner concave arc is arranged on the upper surface of each boss part, the arc size of each inner concave arc is equal to the outer diameter size of each supporting rod (1), and each inner concave arc is of a sawtooth-shaped characteristic structure; the two clamping pieces (4) are positioned between the clamp (3) and the fixed plate (2), and the length of the clamping pieces (4) is not less than the side length of the fixed plate (2).
The device for measuring the deformation of the antenna comprises four connecting pieces (5), the connecting pieces (5) are of hollow columnar structures and used for supporting the antenna to be measured, the connecting pieces (5) and the antenna to be measured are connected onto the fixing plate (2) through long bolts, and after the connecting pieces (5) are completely assembled, the gap between the antenna to be measured and the fixing plate (2) is 1-3 mm.
The device for measuring the antenna deformation comprises 1 connecting cylinder (6), the connecting cylinder (6) is of a hollow columnar structure, the outer diameter of the connecting cylinder (6) can extend into the antenna to be measured, a step hole is formed in the bottom of one end, away from the fixing plate (2), of the connecting cylinder (6), the inner diameter of the step hole is smaller than that of the connecting cylinder (6), a laser head connecting plate (7) is fixedly connected to the end face of the step hole of the connecting cylinder (6) through a screw, and a ranging laser head (8) is installed on the laser head connecting plate (7); the inner diameter of the connecting cylinder (6) meets the requirement that two communication optical cables penetrate through a gap;
the device for measuring the antenna deformation comprises two laser head connecting plates (7), wherein the laser head connecting plates (7) are of plate-shaped structures and are arranged on a connecting cylinder (6), and the maximum size of the laser head connecting plates can meet the requirement of extending into the antenna; waist-shaped holes are respectively processed on the two laser head connecting plates (7) and used for connecting the ranging laser heads (8), the ranging laser heads (8) slide on the waist-shaped holes, the positions of the ranging laser heads (8) are adjusted, and the ranging requirements are met.
The invention has the beneficial effects that:
1) the real deformation data of the antenna under the action of the load can be obtained, the test data is more consistent with the real working condition, and the test result is more reliable.
In the prior art, target displacement on an antenna in a wind tunnel facility is measured by a laser head arranged on the outer side wall of a wind tunnel, deformation information of the antenna is obtained by measuring the target displacement and combining a method of calculating the windward theoretical appearance of the antenna, the introduced system error is large, and the obtained deformation information is inaccurate.
Due to the fact that the antenna deformation direct measurement device is designed, real deformation data of the antenna under the action of different wind loads can be measured, a deformation direct real-time measurement mode can be achieved, and accuracy of deformation information is improved compared with the prior art.
2) The invention realizes direct real-time measurement of deformation, not only can acquire accurate deformation data, but also can ensure the safety of antenna products and test facilities through real-time monitoring data.
3) The invention realizes the integrated design of the measuring device, greatly shortens the measuring period of the antenna deformation and reduces the test cost.
Drawings
FIG. 1 is a schematic diagram of the construction of the combined apparatus of the present invention;
FIG. 2 is a schematic diagram of an embodiment of the present invention for directly measuring the deformation of the reflector antenna during the wind tunnel test.
Fig. 3 is a schematic view of a clip.
Fig. 4 is a schematic view of a clamping member.
Fig. 5 is a top view of the combined device.
Fig. 6 is a bottom view of the assembled device.
Fig. 7 is a schematic view of a connector barrel, wherein fig. (a) is a schematic view of a state of the connector barrel, fig. (b) is a schematic view of a state of the connector barrel, and fig. (c) is a schematic view of a state of the connector barrel.
Fig. 8 is an assembly view of the connector barrel, the connection plate and the ranging laser head, wherein fig. a is an assembly view in a first state, fig. b is a schematic view in a second state, and fig. c is a schematic view in a third state.
The laser measuring device comprises a support rod 1, a fixing plate 2, a clamp 3, a clamping piece 4, a connecting piece 5, a connecting cylinder 6, a laser head connecting plate 7 and a distance measuring laser head 8.
Detailed Description
The invention is further illustrated with reference to the following figures and examples.
The examples of the invention are as follows:
a combined device for directly measuring the deformation of a reflector antenna in a wind tunnel test process comprises a supporting rod (1) and a fixing plate (2) connected to the supporting rod (1); the fixing plate (2) is tightly connected with the supporting rod (1) through the clamp (3) and the clamping piece (4) in a bolt fastening mode; four corners below the fixed plate (2) are provided with connecting pieces (5), and the connecting pieces (5) and the antenna to be tested are connected to the fixed plate (2) through long bolts; the middle part below the fixed plate (2) is provided with a connecting cylinder (6), a wire passing hole is formed in a circle surrounded by the connecting cylinder (6) below the fixed plate (2), a laser head connecting plate (7) is connected below the connecting cylinder (6), the tail end of the laser head connecting plate (7) is provided with a distance measuring laser head (8), a communication optical cable of the distance measuring laser head (8) sequentially passes through the wire passing holes of the connecting cylinder (6) and the fixed plate (2), and then passes through an air duct facility outside the supporting rod (1) to transmit a measuring signal to a data acquisition card outside the air duct in real time, and deformation data is recorded in real time through a portable computer for correcting antenna performance simulation errors, optimizing design and verifying product performance; the connecting cylinder (6) extends into the tested antenna for testing.
The supporting rod (1) is of a columnar structure with flanges at two ends, and through holes are formed in the flanges and used for connecting the side walls of the wind tunnel device; the supporting rod (1) provides the whole displacement resistance capability under the action of wind load for the antenna to be tested, and meanwhile, the test result deviation caused by unstable disturbance possibly formed under the action of various variable wind speed loads is avoided;
the fixed plate (2) is of a square structure, and a connecting piece (5) is arranged on the fixed plate (2) and used for connecting the antenna to be tested;
the combined device for directly measuring the deformation of the reflector antenna in the wind tunnel test process comprises two clamps (3), the middle of each clamp (3) is arc-shaped, the outer walls of the two ends of each arc are provided with radially raised lugs, the inner diameter of each arc is the same as the outer diameter of the support rod (1), and the inner surface of each arc is of a saw-toothed characteristic structure, so that the test result deviation caused by the rotation displacement of the antenna around the support rod (1) under the action of wind load is prevented; the two clamps (3) fix the support rod (1) on the fixing plate (2) respectively and are positioned at two opposite edges of the fixing plate (2).
The combined device for directly measuring the deformation of the reflecting surface antenna in the wind tunnel test process comprises two clamping pieces (4), wherein each clamping piece (4) is a strip plate, a boss is arranged in the middle of each clamping piece, an inner concave arc is arranged on the upper surface of each boss part, the arc size of each inner concave arc is equal to the outer diameter size of each supporting rod (1), and each inner concave arc is of a saw-toothed characteristic structure, so that the test result deviation caused by the rotary displacement of the antenna around each supporting rod (1) under the action of wind load is prevented; the two clamping pieces (4) are positioned between the clamp (3) and the fixed plate (2), and the length of the clamping pieces (4) is not less than the side length of the fixed plate (2).
The device for measuring the deformation of the antenna comprises four connecting pieces (5), the connecting pieces (5) are of hollow columnar structures and used for supporting the antenna to be measured, the connecting pieces (5) and the antenna to be measured are connected onto the fixing plate (2) through long bolts, and after the connecting pieces (5) are completely assembled, the gap between the antenna to be measured and the fixing plate (2) is 1-3 mm.
The device for measuring the antenna deformation comprises 1 connecting cylinder (6), the connecting cylinder (6) is of a hollow columnar structure, the outer diameter of the connecting cylinder (6) can extend into the antenna to be measured, a step hole is formed in the bottom of one end, away from the fixing plate (2), of the connecting cylinder (6), the inner diameter of the step hole is smaller than that of the connecting cylinder (6), a laser head connecting plate (7) is fixedly connected to the end face of the step hole of the connecting cylinder (6) through a screw, and a ranging laser head (8) is installed on the laser head connecting plate (7); the inner diameter of the connecting cylinder (6) meets the requirement that two communication optical cables penetrate through a gap;
the device for measuring the antenna deformation comprises two laser head connecting plates (7), wherein the laser head connecting plates (7) are of plate-shaped structures and are arranged on a connecting cylinder (6), and the maximum size of the laser head connecting plates can meet the requirement of extending into the antenna; waist-shaped holes are respectively processed on the two laser head connecting plates (7) and used for connecting the ranging laser heads (8), the ranging laser heads (8) slide on the waist-shaped holes, the positions of the ranging laser heads (8) are adjusted, and the ranging requirements are met.
Claims (8)
1. The utility model provides a composite set of direct measurement plane of reflection antenna wind tunnel test process deformation, includes bracing piece (1) and connects fixed plate (2) on bracing piece (1), its characterized in that:
in the combined device for directly measuring the deformation of the reflector antenna in the wind tunnel test process, a fixed plate (2) is tightly connected with a supporting rod (1) through a clamp (3) and a fastening piece (4) in a bolt fastening mode; four corners below the fixed plate (2) are provided with connecting pieces (5), and the connecting pieces (5) and the antenna to be tested are connected to the fixed plate (2) through long bolts; the middle part of fixed plate (2) below installs connecting cylinder (6), the circle inside being equipped with of connecting cylinder (6) below fixed plate (2) encloses the line hole, laser head connecting plate (7) are connected to connecting cylinder (6) below, terminal installation range finding laser head (8) of laser head connecting plate (7), the communication optical cable of range finding laser head (8) passes connecting cylinder (6) and fixed plate (2) in proper order and crosses behind the line hole, the outer wind tunnel facility wind channel of following bracing piece (1) transmits measuring signal to the data acquisition card of external placement wind channel in real time, record deformation data in real time through portable computer, connecting cylinder (6) stretch into and are tested in the antenna.
2. The combination unit of claim 1 for direct measurement of deflection of reflector antenna during wind tunnel testing, wherein:
the supporting rod (1) is of a columnar structure with flanges at two ends, and through holes are formed in the flanges and used for connecting the side walls of the wind tunnel device; the supporting rod (1) provides the whole displacement resistance capability under the wind load effect for the antenna to be tested, and meanwhile, the test result deviation caused by unstable disturbance possibly formed under the various wind speed changing load effects is avoided.
3. The combination unit of claim 1 for direct measurement of deflection of reflector antenna during wind tunnel testing, wherein:
the fixed plate (2) is of a square structure, and a connecting piece (5) is arranged on the fixed plate (2) and used for connecting the antenna to be tested.
4. The combination unit of claim 1 for direct measurement of deflection of reflector antenna during wind tunnel testing, wherein:
the combined device for directly measuring the deformation of the reflector antenna in the wind tunnel test process comprises two clamps (3), the middle of each clamp (3) is in an arc shape, the outer walls of the two ends of each arc are provided with radially raised lugs, the inner diameter of each arc is the same as the outer diameter of the support rod (1), and the inner surface of each arc is in a sawtooth-shaped characteristic structure; the two clamps (3) fix the support rod (1) on the fixing plate (2) respectively and are positioned at two opposite edges of the fixing plate (2).
5. The combination unit of claim 1 for direct measurement of deflection of reflector antenna during wind tunnel testing, wherein:
the combined device for directly measuring the deformation of the reflecting surface antenna in the wind tunnel test process comprises two clamping pieces (4), wherein each clamping piece (4) is a strip plate, a boss is arranged in the middle of each clamping piece, an inner concave arc is arranged on the upper surface of each boss part, the arc size of each inner concave arc is equal to the outer diameter size of each supporting rod (1), and each inner concave arc is of a sawtooth-shaped characteristic structure; the two clamping pieces (4) are positioned between the clamp (3) and the fixed plate (2), and the length of the clamping pieces (4) is not less than the side length of the fixed plate (2).
6. The combination unit of claim 1 for direct measurement of deflection of reflector antenna during wind tunnel testing, wherein:
the combined device for directly measuring the deformation of the reflector antenna in the wind tunnel test process comprises four connecting pieces (5), the connecting pieces (5) are of hollow columnar structures and used for supporting the antenna to be measured, the connecting pieces (5) and the antenna to be measured are connected onto the fixing plate (2) through long bolts, and the length of the connecting pieces (5) ensures that the gap between the antenna to be measured and the fixing plate (2) is 1-3 mm after the assembly is finished.
7. The combination unit of claim 1 for direct measurement of deflection of reflector antenna during wind tunnel testing, wherein:
the combined device for directly measuring the deformation of the reflector antenna in the wind tunnel test process comprises 1 connecting cylinder (6), the connecting cylinder (6) is of a hollow columnar structure, the outer diameter of the connecting cylinder (6) can extend into the tested antenna, a step hole is formed in the bottom of one end, away from the fixed plate (2), of the connecting cylinder (6), the inner diameter of the step hole is smaller than that of the connecting cylinder (6), a laser head connecting plate (7) is fixedly connected to the end face of the step hole of the connecting cylinder (6) through a screw, and a ranging laser head (8) is installed on the laser head connecting plate (7); the inner diameter of the connecting cylinder (6) meets the requirement that two communication optical cables pass through the gap.
8. The combination unit of claim 1 for direct measurement of deflection of reflector antenna during wind tunnel testing, wherein:
the combined device for directly measuring the deformation of the reflector antenna in the wind tunnel test process comprises two laser head connecting plates (7), wherein the laser head connecting plates (7) are of plate-shaped structures and are arranged on connecting cylinders (6), and the maximum size of the combined device meets the requirement of extending inside the antenna; waist-shaped holes are respectively processed on the two laser head connecting plates (7) and used for connecting the ranging laser heads (8), the ranging laser heads (8) slide on the waist-shaped holes, the positions of the ranging laser heads (8) are adjusted, and the ranging requirements are met.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122308863.3U CN216524685U (en) | 2021-09-22 | 2021-09-22 | Combined device for directly measuring deformation of reflector antenna in wind tunnel test process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122308863.3U CN216524685U (en) | 2021-09-22 | 2021-09-22 | Combined device for directly measuring deformation of reflector antenna in wind tunnel test process |
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| Publication Number | Publication Date |
|---|---|
| CN216524685U true CN216524685U (en) | 2022-05-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122308863.3U Active CN216524685U (en) | 2021-09-22 | 2021-09-22 | Combined device for directly measuring deformation of reflector antenna in wind tunnel test process |
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| CN (1) | CN216524685U (en) |
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- 2021-09-22 CN CN202122308863.3U patent/CN216524685U/en active Active
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