A novel wind profile radar antenna array leveling mechanism and leveling method thereof

Abstract

The present invention provides a novel wind profile radar antenna array leveling mechanism, wherein the leveling mechanism is distributed in an array at the bottom of the wind profile radar antenna array, and includes legs; a coarse adjustment structure, which is detachably arranged at the middle of the legs, and the legs can be lengthened or shortened by adjusting the coarse adjustment structure; a fine adjustment structure, which is detachably arranged at the top of the legs, and the upper end of the fine adjustment structure is connected to the intersection of the wind profile radar antenna array, and the wind profile radar antenna array can be slightly moved and rotated up and down by adjusting the fine adjustment structure. The present invention also provides a leveling method of the leveling mechanism, which can perform coarse and fine adjustments, and the coarse adjustment adjustment range is large, and is mainly used to adjust the larger distance caused by ground undulations; the fine adjustment adjustment range is small, and is mainly used to adjust the smaller distance between antenna array units; the operation is simple, the leveling time is short, the leveling accuracy is high, the structure is simple, and the cost is low.

Description

Technical Field

[0001] The invention relates to the field of radar technology, and in particular to a novel wind profile radar antenna array surface leveling mechanism and a leveling method thereof. Background Art

[0002] The wind profiler radar is a pulse Doppler radar pointing vertically to the sky. It can detect the three-dimensional wind field in the atmosphere in real time and obtain wind profile data at different times. It can continuously measure and store various atmospheric parameters such as radial wind speed, spectral width, horizontal wind speed, vertical wind speed, etc. It can be used for atmospheric dynamics research, atmospheric turbulence structure research, tropospheric atmospheric wind field observation and numerical forecast, clear sky local airspace airflow monitoring, mesoscale disastrous weather monitoring, airport airspace airflow monitoring, test base meteorological support, disaster prevention and mitigation meteorological services, etc.

[0003] The wind profiler radar uses a phased array antenna structure. The antenna array is large in size and generally cannot be transported as a whole. In order to meet transportation requirements, the antenna array is divided into several antenna array units, and the antenna array units meet transportation requirements. When working, the antenna array units are assembled to form the antenna array.

[0004] There is a planar error in the antenna array surface assembled from antenna array units. In addition, the antenna array surface is generally installed on the work site through an antenna bracket, and the antenna installation site generally has an error of tens of millimeters or even greater, so the antenna bracket should be able to adjust the height of the array surface fulcrum.

[0005] Commonly used antenna brackets have only a small distance adjustment range. When the antenna array is large and the ground is undulating, the leveling accuracy of this type of antenna bracket is poor and the leveling is time-consuming. For example, when the distance that a certain support point needs to be adjusted exceeds the adjustment range of the antenna bracket, if the height of the antenna bracket support point is lower than the height of the already adjusted support point, the solution can be to reduce the height of other antenna bracket support points that have been adjusted; if the height of the antenna bracket support point is higher than the height of the already adjusted support point, since the site is generally not damaged, at this time, the only solution is to increase the height of other antenna bracket support points that have been adjusted. Regardless of whether the height of the antenna bracket support point is higher or lower than the height of the already adjusted support point, when the distance that the support point needs to be adjusted exceeds the adjustment range of the antenna bracket, it is necessary to adjust the support point that has been adjusted again. This will result in repeated adjustment of the height of the already adjusted support point, which is very time-consuming. Summary of the invention

[0006] The present invention aims at the problems existing in the commonly used antenna brackets in the prior art. One purpose of the present invention is to design a novel wind profile radar antenna array leveling mechanism. Through a coarse adjustment structure and a fine adjustment structure, the coarse adjustment range is large and the fine adjustment range is small, so that the leveling mechanism is simple to operate and has high leveling accuracy.

[0007] Another object of the present invention is to provide a leveling method for the above-mentioned leveling mechanism, which has the advantages of simple operation, short leveling time and high leveling accuracy.

[0008] In order to achieve the above object, the present invention is achieved through the following technical solutions:

[0009] The present invention provides a novel wind profile radar antenna array surface leveling mechanism, which is characterized in that: the leveling mechanism is distributed in an array at the bottom of the wind profile radar antenna array surface, and comprises:

[0010] Outriggers;

[0011] A coarse adjustment structure is detachably arranged at the middle of the supporting leg, and the supporting leg can be lengthened or shortened by adjusting the coarse adjustment structure;

[0012] The fine adjustment structure is detachably arranged on the top of the support leg, and the upper end of the fine adjustment structure is connected to the intersection of the wind profile radar antenna array surface. By adjusting the fine adjustment structure, the wind profile radar antenna array surface can be slightly moved and rotated up and down.

[0013] Furthermore, the coarse adjustment structure includes a double-ended screw and a coarse adjustment handle, wherein the double-ended screw is detachably mounted on the middle portion of the leg, and the coarse adjustment handle is detachably mounted on the double-ended screw. The coarse adjustment handle is rotated to drive the double-ended screw to rotate so as to extend or shorten the leg.

[0014] Furthermore, the support leg includes an upper support leg and a lower support leg, the upper and lower ends of the double-ended screw are respectively provided with threads with opposite rotation directions, and the upper support leg and the lower support leg are respectively provided with threads matching the double-ended screw. The coarse adjustment handle drives the double-ended screw to rotate to make the upper support leg and the lower support leg relatively close or far away.

[0015] Furthermore, the threads at the upper and lower ends of the double-ended screw rod are self-locking trapezoidal threads, and by rotating the coarse adjustment handle, the upper leg and the lower leg can be relatively moved up and down over a large distance.

[0016] Furthermore, the fine-adjustment structure includes a movable support and a fine-adjustment bolt, wherein the fine-adjustment bolt detachably connects the support leg and the movable support, and adjusting the fine-adjustment bolt can make the movable support move up and down and rotate relative to the support leg.

[0017] Furthermore, the movable support includes a support bottom plate and a support top plate, and the upper leg top plate is arranged on the top of the upper leg; the fine adjustment bolt is a stepped threaded shaft, the diameter of the upper threaded shaft is smaller than the diameter of the lower threaded shaft, and a step is formed at the junction of the upper threaded shaft and the lower threaded shaft; the upper and lower threaded shafts are respectively connected to the upper leg top plate and the support bottom plate; the step supports the support bottom plate of the movable support

[0018] Furthermore, the threads at the upper and lower ends of the fine-adjustment bolt are triangular threads, and rotating the fine-adjustment bolt can cause the support base plate to move and rotate slightly up and down relative to the upper leg top plate.

[0019] Furthermore, a support base plate mounting hole is provided on the support base plate of the movable support, and there is a gap between the upper end thread of the fine-adjustment bolt and the support base plate mounting hole. The gap allows the fine-adjustment bolt to rotate and tilt in the mounting hole, thereby tilting the support base plate relative to the upper leg top plate.

[0020] The present invention further provides a leveling method for the leveling mechanism, comprising the following steps:

[0021] Assemble the leveling mechanism: install the legs, double-ended screw, coarse adjustment handle, movable support and fine adjustment bolt, and screw the upper and lower threads of the double-ended screw into half of their thread length respectively, and screw the lower thread of the fine adjustment bolt into half of its thread length;

[0022] Site placement: Install all leveling mechanisms on the site and set up a theodolite;

[0023] Coarse adjustment: determine one leveling mechanism as the coarse adjustment reference system, vertically place a right-angle ruler on the surface of the support top plate, and use a theodolite to measure the half height of the right-angle side of the ruler; adjust the coarse adjustment handles of all other leveling mechanisms in turn, drive the double-headed screw, so that the height of the support top plates of all other leveling mechanisms is consistent with the reference system;

[0024] Install the antenna array: install the antenna array unit on the leveling mechanism;

[0025] Fine adjustment: the antenna array unit installed on the leveling mechanism of the coarse adjustment reference system is used as the reference system for fine adjustment; a right-angle scale is placed vertically and reversely on the lower surface of the antenna array unit mounting base plate, and the height of half of the right-angle side of the scale is measured with a theodolite; the height of the lower surface of the mounting base plate of other antenna array units is finely adjusted, and the fine adjustment bolts corresponding to the lower surface of the mounting base plate are rotated so that the height of the lower surface of the mounting base plate of the antenna array unit is consistent with the reference system;

[0026] Fix and fix: Tighten the nuts on the fine-tuning bolts and the connecting bolts of the antenna array unit.

[0027] Furthermore, the error of the coarse adjustment is controlled within 2 mm, and the error range of the fine adjustment is controlled within 1 mm.

[0028] Beneficial effects:

[0029] The present invention provides a novel wind profile radar antenna array leveling mechanism and a leveling method thereof, which can perform coarse adjustment and fine adjustment. The coarse adjustment has a large adjustment range and is mainly used to adjust a larger distance caused by ground undulations; the fine adjustment has a small adjustment range and is mainly used to adjust a smaller distance between antenna array units; the mechanism has the advantages of simple operation, short leveling time, high leveling accuracy, simple structure and low cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a structural schematic diagram of the leveling mechanism of the present invention;

[0031] Figure 2 is a three-dimensional diagram of the supporting leg of the present invention;

[0032] Figure 3 is a cross-sectional view of a support leg of the present invention;

[0033] Figure 4 A three-dimensional diagram of the movable support of the present invention;

[0034] Figure 5 The figure is a schematic diagram of the installation of the antenna array of the wind profile radar of the present invention;

[0035] Figure 6 The angles of the antenna array surface of the present invention are in the same leveling mechanism installation diagram;

[0036] Figure 7 The edge of the antenna array surface of the present invention is in the same leveling mechanism installation diagram;

[0037] Figure 8 The middle of the antenna array of the present invention is in the same leveling mechanism installation diagram;

[0038] Fig. 9 This is a schematic diagram of the installation of the fine adjustment bolt of the present invention;

[0039] Fig.10 This is a schematic diagram of the rough adjustment of the leveling mechanism of the present invention;

[0040] Fig.11 This is a schematic diagram of fine adjustment of the leveling mechanism of the present invention;

[0041] In the figure: 1. Leg; 1-1. Upper leg; 1-1-1. Upper leg top plate; 1-1-2. Upper support nut; 1-2. Double-ended screw; 1-3. Lower leg; 1-3-1. Lower leg bottom plate; 1-3-2. Lower support nut; 2. Movable support; 2-1. Support bottom plate; 2-1-1. Support bottom plate mounting hole; 2-2. Support reinforcement rib; 2-3. Support top plate; 2-3-1. Support top plate mounting hole; 3. Fine adjustment bolt; 4. Coarse adjustment handle; 5. Leveling mechanism; 6. Antenna array unit; 7. Theodolite; 8. Right-angle ruler. DETAILED DESCRIPTION

[0042] The preferred mechanism and motion realization method of the present invention are further described below in conjunction with the accompanying drawings and specific embodiments.

[0043] The present invention works by the following technical solutions:

[0044] like Figure 1 As shown, a novel wind profile radar antenna array leveling mechanism 5 includes a support leg 1, a coarse adjustment structure and a fine adjustment structure. The coarse adjustment structure includes a double-headed screw 1-2 and a coarse adjustment handle 4, and the fine adjustment structure includes a movable support 3 and a fine adjustment bolt 4.

[0045] like Figure 2 , 3 As shown, the supporting leg 1 comprises an upper supporting leg 1-1, a double-ended screw rod 1-2 and a lower supporting leg 1-3.

[0046] Among them, an upper leg top plate 1 - 1 - 1 is arranged on the top of the upper leg 1 - 1 , and a top plate mounting threaded hole is arranged on the upper leg top plate 1 - 1 - 1 for mounting the fine-adjustment bolt 3 .

[0047] A coarse adjustment handle mounting hole is provided in the middle of the double-ended screw rod 1-2 for mounting the coarse adjustment handle 4; the upper and lower ends of the double-ended screw rod 1-2 are respectively processed with threads of opposite rotation directions, and the threads are self-locking trapezoidal threads for connecting the upper leg 1-1 and the lower leg 1-3. The bottom of the upper leg 1-1 and the top of the lower leg 1-3 are respectively provided with an upper support nut 1-1-2 and a lower support nut 1-3-2 that correspond to the threads at the upper and lower ends of the double-ended screw rod 1-2, so as to facilitate connection with the double-ended screw rod 1-2.

[0048] A lower leg bottom plate 1 - 3 - 1 may be provided at the bottom of the lower leg 1 - 3 . In actual use, the lower leg bottom plate 1 - 3 - 1 may be fixed to the installation ground by expansion bolts, thereby fixing the entire leveling mechanism 5 .

[0049] The leg 1 may also be provided with reinforcing ribs, which are respectively provided at the connection between the upper leg top plate 1-1-1 and the upper leg 1-1, and the lower leg bottom plate 1-3-1 and the lower leg 1-3, to strengthen the connection.

[0050] The coarse adjustment handle 4 is installed on the double-ended screw 1-2. Turning the coarse adjustment handle 4 causes the double-ended screw 1-2 to rotate. The rotation of the double-ended screw 1-2 can cause the upper leg 1-1 to move up and down relative to the lower leg 1-3, so that the leg 1 is extended or shortened. The threads at both ends of the double-ended screw 1-2 are self-locking trapezoidal threads with a large lead. The double-ended screw 1-2 rotates one circle, causing the upper leg 1-1 to move up and down relative to the lower leg 1-3. The distance is large, so it is used for coarse adjustment of the leveling of the antenna array unit 6.

[0051] After the antenna array is leveled, the coarse adjustment handle 4 can be removed from the leveling mechanism 5 .

[0052] like Figure 4 As shown, the movable support 2 is composed of a support bottom plate 2-1, a support reinforcement rib 2-2 and a support top plate 2-3. The support top plate 2-3 is arranged at the upper end of the support reinforcement rib 2-2, and the support bottom plate 2-1 is arranged at the lower end. The support bottom plate 2-1 is provided with a support bottom plate mounting hole 2-1-1, which is connected to the upper leg top plate 1-1-1 of the upper leg 1-1 through a fine adjustment bolt 3.

[0053] like Figure 5 As shown, the antenna array of the wind profile radar is composed of a plurality of antenna array units 6. The support top plate 2-3 is provided with a support top plate mounting hole 2-3-1, and the bolts are passed through the support top plate mounting hole 2-3-1 to fix the antenna array unit 6 to the support top plate 2-3 of the movable support 2. The support top plate mounting hole 2-3-1 is a combination hole, and the four corners of the wind profile radar antenna array are supported by a leveling mechanism 5 respectively. The movable support 2 is located inside the antenna array unit 6, which does not affect the appearance of the antenna array. Figure 6 As shown; at the edge of the wind profile radar antenna array, every two antenna array units 6 are supported by a leveling mechanism 5, and the movable support 2 is located inside the antenna array unit 6, which does not affect the appearance of the antenna array, such as Figure 7 In the middle of the wind profile radar antenna array is a leveling mechanism 5 supported by 4 antenna array units 6, such as Figure 8 shown.

[0054] like Fig. 9 As shown, the fine adjustment bolt 3 is a stepped threaded shaft, with a step in the middle, and threads at the upper and lower ends, respectively. The diameter of the upper threaded shaft is smaller than the diameter of the lower threaded shaft, and the step can support the support base plate 2-1 of the movable support 2. The threads at the upper and lower ends of the fine adjustment bolt 3 are triangular threads, and because of their small lead, the distance that the movable support 2 moves up and down after one rotation is small, so it is used for fine adjustment of the leveling mechanism 5.

[0055] Because the diameter of the upper thread of the fine-adjusting bolt 3 is smaller than the diameter of the support base plate mounting hole 2-1-1 of the support base plate 2-1, there is a gap between the upper thread and the support base plate mounting hole 2-1-1. This gap ensures that the upper end of the fine-adjusting bolt 3 can rotate and tilt relative to the support base plate 2-1, so that the support base plate 2-1 can tilt relative to the upper leg top plate 1-1-1. The lower thread is installed in the mounting threaded hole of the upper leg top plate 1-1-1. Rotating the fine-adjusting bolt 3 can make the fine-adjusting bolt 3 move up and down relative to the upper leg top plate 1-1-1. During installation, the support base plate 2-1 of the movable support 2 is installed on the step of the fine-adjusting bolt 3. When the fine-adjusting bolt 3 moves up and down, the step will push the movable support 2 to move up and down and rotate, thereby driving the antenna array unit 6 to move up and down and rotate, achieving the purpose of fine adjustment.

[0056] There are four fine adjustment bolts 3 on the wind profile radar antenna array leveling mechanism 5. When one fine adjustment bolt 3 is rotated, not only the movable support 2 moves up and down, but also the movable support 2 is tilted. Therefore, to level the movable support 2, the four fine adjustment bolts 3 need to be adjusted in a coordinated manner.

[0057] This embodiment also provides a leveling method for the leveling mechanism, the steps of which include:

[0058] (1) Assembling the leveling mechanism 5: Assembling the support leg 1, the double-ended screw 1-2, the coarse adjustment handle 4, the movable support 2 and the fine adjustment bolt 3. When installing the double-ended screw 1-2, the upper and lower threads are screwed in to a depth of half the length of the thread, respectively, to ensure that there is sufficient upper and lower margin for coarse adjustment of the double-ended screw 1-2; when installing the fine adjustment bolt 3, the lower thread of the fine adjustment bolt 3 is screwed in to a depth of half the length of the thread, to ensure that there is sufficient upper and lower margin for fine adjustment of the fine adjustment bolt 3 and to keep the upper support leg top plate 1-1-1 parallel to the support base plate 2-1.

[0059] (2) Site placement: On the site where the antenna array is to be installed, all leveling mechanisms 5 are installed according to the layout of the wind profiler radar antenna array; a theodolite 7 is set up outside the antenna array for observation.

[0060] (3) Coarse adjustment: Fig.10 As shown, a leveling mechanism 5 is determined as a coarse adjustment reference system, and a right-angle ruler is placed on the support top plate 2-3 of the leveling mechanism 5, with its bottom surface close to the upper surface of the support top plate 2-3 and its scale edge perpendicular to the upper surface of the support top plate 2-3; the theodolite 7 is adjusted so that the horizontal scale line of the theodolite 7 is located at the half position of the scale of the right-angle ruler; the other leveling mechanisms 5 are coarsely adjusted in turn, and the double-headed screw 1-2 is rotated by the coarse adjustment handle 4 to move the support top plate 2-3 up and down, so that the height of the support top plate 2-3 is consistent with the reference system, and the error range can be controlled within 2 mm.

[0061] (4) Installing the antenna array: Install the antenna array units 6 on the leveling mechanism 5. They can be installed in rows from left to right, or they can be installed from the middle of the wind profile radar antenna array to the surrounding areas. Before the antenna array is leveled, do not tighten the connecting bolts temporarily.

[0062] (5) Fine tuning: Fig.11As shown, the antenna array unit 6 installed on the leveling mechanism 5 of the coarse adjustment reference system is used as the reference system for fine adjustment; the right-angle ruler is placed inversely on the lower surface of the mounting base of the antenna array unit 6, wherein the bottom surface of the right-angle ruler is in close contact with the lower surface of the mounting base of the antenna array unit 6, and the scale edge is perpendicular to the lower surface of the mounting base of the antenna array unit 6; according to the fine adjustment reference system, the height of the lower surface of the mounting base of other antenna array units 6 is finely adjusted, and the fine adjustment bolts 3 corresponding to the lower surface of the mounting base are rotated to make the movable support top plate 2-4 move and rotate slightly up and down, so that the height of the lower surface of the mounting base of the antenna array unit 6 is consistent with the reference system, and the error range can be controlled within 1 mm.

[0063] (6) Arrangement and fixation: After adjusting the height of the mounting base plate of all antenna array units 6 to the required accuracy range according to the above steps, tighten the nuts on the fine-tuning bolts 3 and the connecting bolts of the antenna array units 6 respectively.

[0064] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. However, any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A novel wind profile radar antenna array leveling mechanism, characterized in that: The leveling mechanism is distributed in an array at the bottom of the wind profile radar antenna array, including: Outriggers; A coarse adjustment structure is detachably arranged at the middle of the supporting leg, and the supporting leg can be lengthened or shortened by adjusting the coarse adjustment structure; A fine adjustment structure is detachably arranged on the top of the supporting leg, the upper end of the fine adjustment structure is connected to the intersection of the wind profile radar antenna array surface, and the wind profile radar antenna array surface can be slightly moved and rotated up and down by adjusting the fine adjustment structure; The coarse adjustment structure comprises a double-ended screw and a coarse adjustment handle, wherein the double-ended screw is detachably mounted on the middle part of the leg, and the coarse adjustment handle is detachably mounted on the double-ended screw. The coarse adjustment handle is rotated to drive the double-ended screw to rotate so as to extend or shorten the leg; The legs include an upper leg and a lower leg, the upper and lower ends of the double-ended screw rod are respectively provided with threads with opposite rotation directions, the upper leg and the lower leg are respectively provided with threads matching the double-ended screw rod, and the coarse adjustment handle drives the double-ended screw rod to rotate so that the upper leg and the lower leg can be relatively close to or away from each other; The threads at the upper and lower ends of the double-ended screw rod are self-locking trapezoidal threads. By turning the coarse adjustment handle, the upper leg and the lower leg can be relatively moved up and down over a large distance. The fine adjustment structure comprises a movable support and a fine adjustment bolt, wherein the fine adjustment bolt is detachably connected to the support leg and the movable support, and the movable support can be moved up and down and rotated relative to the support leg by adjusting the fine adjustment bolt; The support base plate of the movable support is provided with a support base plate mounting hole, and there is a gap between the upper end thread of the fine-adjustment bolt and the support base plate mounting hole. The gap allows the fine-adjustment bolt to rotate and tilt in the mounting hole, thereby tilting the support base plate relative to the upper leg top plate.

2. According to claim 1, the novel wind profile radar antenna array leveling mechanism is characterized by: The movable support includes a support bottom plate and a support top plate, and an upper leg top plate is arranged on the top of the upper leg; the fine-adjustment bolt is a stepped threaded shaft, the diameter of the upper threaded shaft is smaller than the diameter of the lower threaded shaft, and a step is formed at the junction of the upper threaded shaft and the lower threaded shaft; the upper and lower threaded shafts are respectively connected to the upper leg top plate and the support bottom plate; the step supports the support bottom plate of the movable support.

3. The novel wind profile radar antenna array leveling mechanism according to claim 2 is characterized in that: The threads at the upper and lower ends of the fine-adjustment bolt are triangular threads. Rotating the fine-adjustment bolt can cause the support base plate to move and rotate slightly up and down relative to the upper leg top plate.

4. A method for leveling a novel wind profile radar antenna array leveling mechanism according to any one of claims 1 to 3, comprising the following steps: Assemble the leveling mechanism: install the legs, double-ended screw, coarse adjustment handle, movable support and fine adjustment bolt, and screw the upper and lower threads of the double-ended screw into half of their thread length respectively, and screw the lower thread of the fine adjustment bolt into half of its thread length; Site placement: Install all leveling mechanisms on the site and set up a theodolite; Coarse adjustment: determine one leveling mechanism as the coarse adjustment reference system, vertically place a right-angle ruler on the surface of the support top plate, and use a theodolite to measure the half height of the right-angle side of the ruler; adjust the coarse adjustment handles of all other leveling mechanisms in turn, drive the double-headed screw, so that the height of the support top plates of all other leveling mechanisms is consistent with the reference system; Install the antenna array: install the antenna array unit on the leveling mechanism; Fine adjustment: the antenna array unit installed on the leveling mechanism of the coarse adjustment reference system is used as the reference system for fine adjustment; a right-angle scale is placed vertically and reversely on the lower surface of the antenna array unit mounting base plate, and the height of half of the right-angle side of the scale is measured with a theodolite; the height of the lower surface of the mounting base plate of other antenna array units is finely adjusted, and the fine adjustment bolts corresponding to the lower surface of the mounting base plate are rotated so that the height of the lower surface of the mounting base plate of the antenna array unit is consistent with the reference system; Fix and fix: Tighten the nuts on the fine-tuning bolts and the connecting bolts of the antenna array unit.

5. The leveling method according to claim 4, characterized in that: The error of the coarse adjustment is controlled within 2 mm, and the error range of the fine adjustment is controlled within 1 mm.

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