Ultra-large radar antenna pitch angle adjusting mechanism

Abstract

The invention belongs to the field of radar antennas, and particularly relates to an oversized radar antenna pitch angle adjusting mechanism which comprises a balance weight supporting ring and a hoisting mechanism which are arranged below a radar antenna, the balance weight supporting ring is of a fan-shaped structure, and the balance weight supporting ring has the swing freedom degree by being hinged to a supporting frame. The hoisting mechanism is connected with the two sides of the counterweight supporting ring through steel wire ropes led out of a reel, the radar antenna is driven to adjust the pitch angle through forward and reverse rotation of the reel, multiple sets of steel wire ropes are arranged between the counterweight supporting ring and the reel in parallel, and the adjusting mechanism further comprises a restraining device. The restraining device comprises a base and a restraining shaft set arranged on the base in parallel, the base is arranged on the supporting frame, a restraining roller is arranged on the restraining shaft set, and the steel wire rope is wound on the restraining roller. The restraint device is additionally arranged, the steel wire rope is prevented from shaking and colliding, the service life of the steel wire rope is prolonged, and the pitch angle adjusting precision of the radar antenna can be improved.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of radar antenna, and particularly relates to a super large radar antenna pitch angle adjusting mechanism. BACKGROUND

[0002] The parabolic cylindrical arc surface radar antenna is hundreds of meters long and dozens of meters in diameter. In order to better perform astronomical observation and radar search, the arc surface antenna needs to have certain angle adjusting capacity so as to better receive signals. For example, a super large antenna pitch driving mechanism disclosed in Chinese patent CN116387830A is a driving mechanism driven by steel wire ropes. The device has the advantages of simple structure and low maintenance cost.

[0003] However, since the radar antenna body is heavy, multiple groups of parallel steel wire ropes are used for common driving. Since the width of the counterweight ring of the antenna is limited, the spacing between adjacent steel wire ropes is reduced. Since the suspension distance of the steel wire rope between the counterweight ring and the bottom winch mechanism is long, when the radar antenna is driven to pitch, the steel wire ropes are prone to shaking and mutual friction and impact, which easily causes rapid wear of the steel wire ropes. SUMMARY

[0004] In order to solve the problems existing in the prior art, the present application provides a super large radar antenna pitch angle adjusting mechanism which can reduce the suspension length of the steel wire rope, constrain the shaking range of the steel wire rope, and prevent mutual wear and impact.

[0005] The specific technical scheme adopted by the present application is as follows:

[0006] A super large radar antenna pitch angle adjusting mechanism comprises a counterweight ring and a winch mechanism arranged below the radar antenna. The counterweight ring has a fan-shaped structure and has a swinging degree of freedom by being hinged to a support frame. The winch mechanism is connected to both sides of the counterweight ring through steel wire ropes led out by a reel. The winch mechanism drives the radar antenna to adjust the pitch angle by forward and reverse rotation of the reel. A plurality of groups of steel wire ropes are arranged in parallel between the counterweight ring and the reel. The adjusting mechanism further comprises a restraining device. The restraining device comprises a base and a group of restraining shafts arranged in parallel on the base. The base is arranged on the support frame. The group of restraining shafts is provided with restraining rollers. The steel wire ropes are wound around the restraining rollers.

[0007] The group of restraining shafts comprises an input shaft, an output shaft, a first reversing shaft and a second reversing shaft. The restraining device is further provided with a driving shaft. The driving shaft is connected to a driving motor. The driving shaft is in meshing transmission connection with the first reversing shaft and the second reversing shaft by means of a gear. The driving shaft is in transmission connection with the input shaft and the output shaft by means of chain transmission.

[0008] The input shaft and the output shaft are further provided with damping devices, the damping device comprises a sliding rod arranged on the base, a sliding seat is arranged on the sliding rod, a swing piece is arranged between the sliding seat and the input shaft and the output shaft, the input shaft and the output shaft are respectively in rotational cooperation with the swing piece, an arc-shaped swing groove is further arranged on the base, the end of the input shaft and the output shaft is inserted into the swing groove and slides along the groove body, when the input shaft and the output shaft slide in the swing groove, the sliding seat is pushed by the swing piece and moves back and forth along the sliding rod.

[0009] Arc-shaped spring steel pieces are arranged between the swing pieces.

[0010] The steel wire rope extends to the side-by-side arranged first reversing shaft and second reversing shaft after winding around the input shaft, extends to the output shaft after winding around the first reversing shaft and the second reversing shaft, and is led out after winding around the output shaft.

[0011] A maintenance threaded seat is arranged on the base, a threaded hole is arranged on the maintenance threaded seat, a maintenance bolt is threadedly connected to the maintenance threaded seat, and the maintenance bolt abuts against the sliding seat after passing through the maintenance threaded seat.

[0012] The beneficial effects of the present application are:

[0013] The present application adopts the mode of increasing the constraint device, so that the multiple groups of steel wire ropes arranged in parallel are constrained, the shaking and collision of the steel wire ropes are avoided, unnecessary wear of the steel wire ropes is avoided, the service life of the steel wire ropes is prolonged, the overhanging length of the steel wire ropes is shortened through the arrangement of the constraint shaft group, the vibration of the steel wire ropes is reduced, and the precision of the radar antenna pitch angle adjustment is improved. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the present application;

[0015] Figure 2 It is a schematic diagram of A-A section in the middle; Figure 1

[0016] Figure 3 It is a schematic diagram of B-B section in the middle; Figure 1

[0017] Figure 4 It is a schematic diagram of the constraint shaft group winding the steel wire rope;

[0018] Figure 5 It is a schematic diagram of the relative position of the constraint device and the counterweight ring;

[0019] ​​In the drawing, 1 is a counterweight ring, 2 is a steel wire rope, 3 is a base, 4 is a constraint roller, 5 is an input shaft, 6 is an output shaft, 7 is a first reversing shaft, 8 is a second reversing shaft, 9 is a sliding rod, 10 is a sliding seat, 11 is a swing piece, 12 is a swing groove, 13 is a spring steel sheet, 14 is a maintenance threaded seat, 15 is a maintenance bolt, and 16 is a driving shaft. DETAILED DESCRIPTION

[0020] The application will be further described below in combination with the drawing and specific embodiments:

[0021] The specific embodiments are as follows: Figure 1 As shown in the drawing, the application is a super large radar antenna pitch angle adjusting mechanism, which comprises a counterweight ring 1 and a winch mechanism arranged below the radar antenna. The counterweight ring 1 is in a fan-shaped structure and has a swing degree of freedom by being hinged with a support frame. The winch mechanism is connected with both sides of the counterweight ring 1 through the steel wire ropes 2 led out by a winding shaft. The forward and reverse rotation of the winding shaft drives the radar antenna to adjust the pitch angle. A plurality of groups of steel wire ropes 2 are arranged in parallel between the counterweight ring 1 and the winding shaft. The adjusting mechanism further comprises a constraint device. The constraint device comprises a base 3 and a constraint shaft group arranged in parallel on the base 3. The base 3 is arranged on the support frame. The constraint shaft group is provided with constraint rollers 4. The steel wire ropes 2 are wound on the constraint rollers 4.

[0022] When the pitch angle adjusting mechanism of the application works, the winch mechanism arranged on the ground or the support frame pulls or releases the steel wire ropes 2, so that the steel wire ropes 2 on one side are tightened and the steel wire ropes 2 on the other side are loosened, thereby pulling the counterweight ring 1 to rotate around the hinge point of the counterweight ring 1 and the support frame with the radar antenna body carried by the counterweight ring 1. Figure 5 The application adds the constraint device, so that a plurality of groups of parallel steel wire ropes 2 can be pulled between the counterweight ring 1 and the winch mechanism, thereby dispersing the pulling force of a single steel wire rope 2 and improving the safety of the pitch angle control. In addition, the constraint device constrains the steel wire ropes 2 suspended between the guide wheel output end of the counterweight ring 1 and the winding shaft of the winch mechanism, so that the adjacent steel wire ropes 2 are not easy to vibrate in the direction of the adjacent steel wire ropes 2 and rub each other during the pulling or loosening process, thereby avoiding unnecessary wear of the steel wire ropes 2, prolonging the service life of the steel wire ropes 2, and helping to improve the precision of the radar antenna pitch angle adjustment.

[0023] Further, as shown in the drawing, Figure 2 , 3, 4, the constraint shaft group includes the input shaft 5, the output shaft 6 and the first reversing shaft 7, the second reversing shaft 8, the constraint device is further provided with the drive shaft 16, the drive shaft 16 is connected with the driving motor, the drive shaft 16 is meshed transmission connection with the first reversing shaft 7 and the second reversing shaft 8 by means of gear, the drive shaft 16 is formed transmission connection with the input shaft 5 and the output shaft 6 by means of chain transmission.

[0024] As shown in Figure 4 , the input shaft 5, the first reversing shaft 7, the second reversing shaft 8, the output shaft 6 are sequentially arranged from top to bottom, the steel wire rope 2 extends to the side-by-side arranged first reversing shaft 7 and second reversing shaft 8 after winding around the input shaft 5, the steel wire rope 2 extends to the output shaft 6 after winding around the first reversing shaft 7 and the second reversing shaft 8, and is led out after winding around the output shaft 6, if the reverse operation, then from the output shaft 6 into the rope, the input shaft 5 direction out of the rope.

[0025] By means of the above winding mode, the steel wire rope 2 is wound on the constraint shaft group, and as shown in Figure 1 , the constraint shaft group is provided with constraint roller 4 adapted to the number of steel wire rope 2, the constraint roller 4 is a groove structure, so that the steel wire rope 2 is constrained on the constraint roller 4, avoiding direct slipping to the constraint roller shaft, thereby the constraint roller shaft is provided, which plays a horizontal constraint role on the steel wire rope 2, avoiding the mutual impact of adjacent steel wire ropes 2, the driving motor drives the drive shaft 16 to rotate, as shown in Figure 2 , wherein the drive shaft 16 and the first reversing shaft 7, the second reversing shaft 8 form gear transmission, so that the first reversing shaft 7, the second reversing shaft 8 support the steel wire rope 2 to rotate together, and the drive shaft 16 also chain transmission with the input shaft 5 and the output shaft 6, so that the drive shaft 16 drives the first reversing shaft 7, the second reversing shaft 8 and the input shaft 5, the output shaft 6 rotating in opposite directions at the same time, so that the wound steel wire rope 2 can get continuous rotation and driving, the driving motor cooperates with the rotation of the winch to drive the steel wire rope 2 adaptively, which can reduce the wear of the steel wire rope 2 while winding and constraining the steel wire rope 2.

[0026] Further, as shown in Figure 3As shown, the input shaft 5 and the output shaft 6 are further provided with damping devices, the damping devices comprise slide rods 9 provided on the base 3, slide seats 10 are provided on the slide rods 9, swing plates 11 are further provided between the slide seats 10 and the input shaft 5 and the output shaft 6, the input shaft 5 and the output shaft 6 are respectively in rotational cooperation with the swing plates 11, the base 3 is further provided with swing grooves 12 in the shape of arcs, the end portions of the input shaft 5 and the output shaft 6 are inserted into the swing grooves 12 and slide along the groove bodies of the swing grooves 12, when the input shaft 5 and the output shaft 6 slide in the swing grooves 12, the slide seats 10 are pushed and squeezed by the swing plates 11 to move back and forth along the slide rods 9. Arc-shaped spring steel plates 13 are provided between the swing plates 11. The damping devices of the present application provide reset elastic force by means of the spring steel plates 13, after the spring steel plates 13 are installed and cooperate with the static pulling of the steel wire rope 2, the positions of the input shaft 5 and the output shaft 6 are approximately located in the middle portions of the arc-shaped swing grooves 12, when the winch mechanism is started and the steel wire rope 2 generates pulling force or releases pulling force, the spring steel plates 13 are opened or relaxed in the mode of pulling the swing plates 11 by the input shaft 5 and the output shaft 6, so that the steel wire rope 2 always maintains a good tension state, avoids mutual collision, leaves buffer time for the start of the driving motor and avoids direct pulling to cause violent vibration of the restraint device.

[0027] The movement of the slide seats 10 along the slide rods 9 can ensure that the input shaft 5 and the output shaft 6 maintain a relatively symmetrical restraint state when swinging, avoids jamming and at the same time the centers of the arcs of the swing grooves 12 coincide with the axis lines of the first reversing shaft 7 and the second reversing shaft 8, so that even if the input shaft 5 and the output shaft 6 are pulled to swing, the distance between the input shaft 5 and the output shaft 6 and the first reversing shaft 7 and the second reversing shaft 8 can remain unchanged, thereby minimizing the forced sliding distance of the steel wire rope 2 and the restraint roller 4 and improving the service life of the steel wire rope 2.

[0028] In order to ensure the symmetry of the restraint shaft group, the damping devices are symmetrically provided on both sides of the base 3 and respectively cooperate with both ends of the restraint shaft group.

[0029] Further, since the spring steel plates 13 are in a busy working state during angle adjustment, they need to be regularly maintained and replaced, maintenance threaded seats 14 are provided on the base 3, threaded holes are provided on the maintenance threaded seats 14, maintenance bolts 15 are threadedly connected to the maintenance threaded seats 14, the maintenance bolts 15 abut against the slide seats 10 after passing through the maintenance threaded seats 14 and form rotational cooperation.

[0030] When the spring steel plates 13 need to be disassembled, the slide seats 10 are only needed to be pushed and pulled to the initial positions of the spring steel plates 13 by rotating the maintenance bolts 15, so that the fastening bolts at both ends of the spring steel plates 13 can be conveniently loosened for replacement, thereby improving the overall maintenance convenience of the equipment.

Claims

1. A tilt angle adjustment mechanism for an ultra-large radar antenna, comprising a counterweight ring (1) disposed below the radar antenna and a hoisting mechanism, wherein the counterweight ring (1) has a fan-shaped structure and has a swing freedom by means of a hinge with a support frame, and the hoisting mechanism is connected to both sides of the counterweight ring (1) by a steel wire rope (2) led out from a spool, and drives the radar antenna to adjust the tilt angle by rotating the spool in both directions, characterized in that: Multiple sets of steel wire ropes (2) are arranged parallel to each other between the counterweight support ring (1) and the reel. The adjustment mechanism also includes a constraint device, which includes a base (3) and a constraint shaft group arranged parallel to the base (3). The base (3) is set on a support frame, and a constraint roller (4) is set on the constraint shaft group. The steel wire rope (2) is wound on the constraint roller (4).

2. The adjusting mechanism according to claim 1, characterized in that: The constraint shaft group includes an input shaft (5), an output shaft (6), a first reversing shaft (7), and a second reversing shaft (8). The constraint device is also provided with a drive shaft (16). The drive shaft (16) is connected to a drive motor. The drive shaft (16) is connected to the first reversing shaft (7) and the second reversing shaft (8) by means of gear meshing and transmission. The drive shaft (16) is connected to the input shaft (5) and the output shaft (6) by means of chain transmission.

3. The adjusting mechanism according to claim 2, characterized in that: The input shaft (5) and output shaft (6) are also provided with a damping device. The damping device includes a slide rod (9) provided on the base (3). A slide block (10) is provided on the slide rod (9). A swing plate (11) is provided between the slide block (10) and the input shaft (5) and the output shaft (6). The input shaft (5) and the output shaft (6) are respectively rotated with the swing plate (11). The base (3) is also provided with an arc-shaped swing groove (12). The ends of the input shaft (5) and the output shaft (6) are inserted into the swing groove (12) and slide along the groove of the swing groove (12). When the input shaft (5) and the output shaft (6) slide in the swing groove (12), the slide block (10) is pushed by the swing plate (11) and moves back and forth along the slide rod (9).

4. The adjusting mechanism according to claim 3, characterized in that: An arc-shaped spring steel sheet (13) is provided between the swing plates (11).

5. The adjusting mechanism according to claim 2, characterized in that: The wire rope (2) extends to the first reversing shaft (7) and the second reversing shaft (8) arranged side by side after passing over the input shaft (5). The wire rope (2) extends to the output shaft (6) after passing over the first reversing shaft (7) and the second reversing shaft (8), and is led out after passing over the output shaft (6).

6. The adjusting mechanism according to claim 3, characterized in that: The base (3) is provided with a maintenance thread seat (14), the maintenance thread seat (14) is provided with a threaded hole, the maintenance thread seat (14) is threadedly connected with a maintenance bolt (15), the maintenance bolt (15) passes through the maintenance thread seat (14) and abuts against the slide (10).

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