Radar antenna pitching adjustment limiting device

Abstract

The utility model belongs to the technical field of radar antennas, and particularly relates to a radar antenna pitching adjustment limiting device which comprises a buffer block and a limiting assembly, the limiting assembly comprises a flexible limiting block, the flexible limiting block is arranged on a base, the buffer block is arranged on a rotating disc, and the rotating disc is arranged on the base. The working end face of the flexible limiting block is obliquely arranged, the head end of the working end face inclines towards the middle of the base, the end of the buffer block is chamfered to form an inclined face, the inclined face makes contact with the working end face along with rotation of the rotary disc and slides from the head end of the working end face to the tail end of the working end face, and the working end face and the inclined face are in friction fit. A baffle is arranged on the base, the baffle is in sliding fit with the back face of the flexible limiting block, the limiting device can buffer and limit the rotating rotary disc, rigid collision between the rotary disc and the base is avoided, and equipment damage is reduced.

Description

Technical Field

[0001] This utility model belongs to the field of radar antenna technology, specifically relating to a radar antenna elevation adjustment limiting device. Background Technology

[0002] To achieve accurate detection of targets at different azimuths and altitudes, radar antennas need to be able to flexibly adjust their elevation angle. The current mainstream adjustment method uses a servo system to drive a turntable on the base to rotate, thereby changing the radar antenna's elevation angle. However, during use, if the servo system malfunctions, the radar antenna's turntable will rotate uncontrollably under gravity, causing the antenna head to droop. Lacking effective constraint and adjustment mechanisms, the turntable's rotational speed often increases rapidly, eventually leading to a violent, rigid collision between the turntable and the base. This collision can damage the radar antenna's turntable, base, and even other critical components, significantly increasing repair costs and difficulty. Utility Model Content

[0003] In order to solve the problems existing in the prior art, this utility model provides a radar antenna pitch adjustment limiting device, which can buffer and limit the rotation of the turntable, avoid rigid collision between the turntable and the base, and reduce equipment damage.

[0004] The specific technical solution adopted in this utility model is as follows:

[0005] A radar antenna pitch adjustment limiting device, the key feature of which is that it includes a buffer block and a limiting component, wherein the limiting component includes a flexible limiting block disposed on a base, the flexible limiting block is disposed on a turntable, the working end face of the flexible limiting block is inclined, the first end of the working end face is inclined toward the middle of the base, the end of the buffer block is chamfered to form a slope, the slope contacts the working end face as the turntable rotates and slides along the first end of the working end face to the last end, and the working end face and the slope form a friction fit.

[0006] The flexible limiting block is connected to the base by means of a spring. The axis of the spring is parallel to the rotation axis of the turntable. A baffle is provided on the base, and the baffle and the back of the flexible limiting block form a sliding fit.

[0007] The spring in question is an air spring.

[0008] The base is provided with a first nylon pad, the baffle is provided with a second nylon pad, the bottom of the flexible limiting block is slidably contacted with the first nylon pad, and the back of the flexible limiting block is slidably contacted with the second nylon pad.

[0009] The flexible limiting block includes a rubber layer and a connecting steel plate. The fixed end of the connecting steel plate is located inside the rubber layer and fixed to the rubber layer. The cantilever end of the connecting steel plate extends outward from the rubber layer and is fixed to the support frame. The flexible limiting block is connected to the spring by means of the support frame.

[0010] The flexible limiting block also includes a supporting steel plate, which is alternately arranged with the rubber layer to form a layered structure.

[0011] One end of the spring is hinged to the flexible limiting block via a hinge shaft, and the hinge shaft is arranged in the vertical direction.

[0012] The limiting component also includes a fixed limiting block disposed on the base. The fixed limiting block is disposed at the end of the flexible limiting block and cooperates with the end of the buffer block to form a fixed limiting of the turntable.

[0013] The beneficial effects of this utility model are:

[0014] This invention employs a sloped surface on a buffer block and an inclined working end face on a flexible limiting block. As the turntable rotates, the sloped surface gradually approaches the working end face, and friction is generated when the sloped surface contacts the working end face. As the turntable rotates further, the sloped surface slides from the beginning to the end of the working end face, and the sloped surface and the working end face squeeze each other, thereby slowing down the rotation speed of the turntable and avoiding direct contact between the turntable and the base to prevent rigid collisions. Furthermore, the buffer block and the flexible limiting block deform during the contact process to absorb kinetic energy, preventing the turntable and the equipment on the base from being loosened or damaged by severe vibration.

[0015] The flexible limiting block is connected to the base by a spring. When the flexible limiting block is impacted by the buffer block, it deforms and moves, transmitting the impact force to the spring, thus achieving further buffering between the turntable and the base.

[0016] The base is equipped with a nylon pad, and the bottom of the flexible limiting block can slide in contact with the nylon pad. When the flexible limiting block is subjected to the force of the buffer block, it can slide smoothly on the nylon pad, reducing the wear of the flexible limiting block, increasing the service life of the flexible limiting block, and further reducing the maintenance frequency. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 for Figure 1 A magnified schematic diagram of part A in the middle;

[0019] Figure 3 for Figure 1 A magnified schematic diagram of part B in the middle;

[0020] Figure 4This is a schematic diagram of the buffer block structure;

[0021] Figure 5 This is a schematic diagram of the flexible limiting block.

[0022] Figure 6 This is a diagram showing the interaction between the buffer block and the limiting component during the rotation of the turntable.

[0023] In the attached diagram, 1 is a buffer block, 101 is an inclined plane, 2 is a flexible limiting block, 201 is a working end face, 202 is a rubber layer, 203 is a connecting steel plate, 3 is a base, 4 is a turntable, 5 is a hinge shaft, 6 is a spring, 7 is a first nylon gasket, 8 is a support frame, 9 is a baffle, 10 is a fixed limiting block, and 11 is a second nylon gasket. Detailed Implementation

[0024] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:

[0025] Specific implementation examples Figure 1-3 As shown, this utility model relates to a radar antenna pitch adjustment limiting device. The key feature is that it includes a buffer block 1 and a limiting assembly. The limiting assembly includes a flexible limiting block 2 and a fixed limiting block 10. The flexible limiting block 2 and the fixed limiting block 10 are respectively disposed on a base 3, and the buffer block 1 is disposed on a turntable 4. Figure 3 , Figure 5 As shown, the working end face 201 of the flexible limiting block 2 is inclined, with the first end of the working end face 201 tilting towards the middle of the base 3; as Figure 4 As shown, the end of the buffer block 1 is chamfered to form a bevel 101. The bevel 101 contacts the working end face 201 as the turntable 4 rotates and slides along the first end to the last end of the working end face 201. The working end face 201 and the bevel 101 form a friction fit. A baffle 9 is provided on the base 3. The baffle 9 forms a sliding fit with the back of the flexible limiting block 2.

[0026] Both ends of the turntable 4 are equipped with buffer blocks 1, and the base 3 is equipped with limiting components that match the buffer blocks 1, so that the turntable 4 can avoid rigid collision with the base 3 when rotating clockwise or counterclockwise under the action of gravity.

[0027] like Figure 6As shown, when the servo system fails and there is no effective constraint and adjustment mechanism for the turntable 4, the turntable 4 rotates under the action of gravity. During the rotation, the inclined surface 101 on the buffer block 1 first contacts the working end face 201 on the flexible limit block 2. As the turntable 4 rotates further, the inclined surface 101 slides from the first end to the last end of the working end face 201. The inclined surface 101 and the working end face 201 squeeze each other, and the rotation speed of the turntable 4 is reduced by friction, so as to avoid the turntable 4 from directly contacting the base 3 and causing a rigid collision. In addition, the buffer block 1 and the flexible limit block 2 deform during the contact process to absorb kinetic energy, so as to prevent the turntable 4 and the equipment on the base 3 from being loosened or damaged by severe vibration.

[0028] Preferably, the flexible limiting block 2 is connected to the base 3 by means of a spring 6. The axis of the spring 6 is parallel to the rotation axis of the turntable 4. During the contact between the inclined surface 101 and the working end face 201, the flexible limiting block 2 is compressed. Under the action of the baffle 9, the flexible limiting block 2 moves towards the center of the base 3, and the spring 6 is compressed and deformed. The elastic deformation of the spring 6 further buffers the rapid rotation of the turntable 4, avoiding a violent rigid collision between the turntable 4 and the base 3. The base 3 is provided with a baffle 9, which forms a sliding fit with the back of the flexible limiting block 2. The baffle 9 provides support for the flexible limiting block 2, allowing the flexible limiting block 2 to fully contact the buffer block 1 to deform and absorb energy, preventing the flexible limiting block 2 from moving backward with the compression of the inclined surface 101.

[0029] A fixed limiting block 10 is disposed at the end of the flexible limiting block 2 and cooperates with the end of the buffer block 1 to form a fixed limit for the turntable 4. After the buffer block 1 on the turntable 4 contacts the flexible limiting block 2, the rotational speed of the turntable 4 is reduced due to shock absorption and energy reduction, and resistance is generated to the continued rotation of the turntable 4. The contact between the fixed limiting block 10 and the end of the buffer block 1 assists the flexible limiting block 2 in limiting the turntable 4 and preventing the turntable 4 from continuing to rotate and colliding with the base 3. The end of the buffer block 1 is a rubber part, which flexibly contacts the fixed limiting block 10.

[0030] Preferably, spring 6 is an air spring, which further enhances the absorption and release of impact energy on turntable 4.

[0031] Preferably, a first nylon pad 7 is provided on the base 3, and a second nylon pad 11 is provided on the baffle 9. The bottom of the flexible limiting block 2 is slidably contacted with the first nylon pad 7, and the back of the flexible limiting block 2 is slidably contacted with the second nylon pad 11. The first nylon pad 7 and the second nylon pad 11 are self-lubricating, which can reduce additional lubrication work and eliminate the need for frequent maintenance by staff. When the flexible limiting block 2 is subjected to the force of the buffer block 1, it can slide on the first nylon pad 7 and the second nylon pad 11, which can fully realize flexible limiting, reduce the wear of the flexible limiting block 2, improve the service life of the flexible limiting block 2, and further reduce the maintenance frequency.

[0032] like Figure 5 As shown, the flexible limiting block 2 includes a rubber layer 202 and a connecting steel plate 203. The fixed end of the connecting steel plate 203 is located inside the rubber layer 202 and fixed to the rubber layer 202. The cantilever end of the connecting steel plate 203 extends outward from the rubber layer 202 and is fixedly connected to the support frame 8. The flexible limiting block 2 is connected to the spring 6 by means of the support frame 8. There is no need to clamp the outside of the flexible limiting block 2, which ensures that the rubber layer 202 remains fixedly connected to the connecting steel plate 203 when it is deformed by the force of the buffer block 1. This achieves a stable connection between the spring 6 and the flexible limiting block 2, thereby ensuring that the flexible limiting block 2 can effectively transmit the impact force to the spring 6 and achieve flexible limiting.

[0033] The flexible limiting block 2 also includes a supporting steel plate 204. The supporting steel plate 204 and the rubber layer 202 are alternately arranged to form a layered structure. The end faces of each supporting steel plate 204 near the working end face 201 are located on the same plane and are parallel to the working end face 201. The rubber layer 202 provides flexibility and elasticity to the flexible limiting block 2. The surface of the rubber layer 202 contacts the buffer block 1 and contacts the first nylon pad 7 and the second nylon pad 11 and slides on the first nylon pad 7 and the second nylon pad 11, so that the flexible limiting block 2 can absorb the impact energy during the rotation of the turntable 4. The supporting steel plate 204 is wrapped by the rubber layer 202 to provide strength and rigidity to the flexible limiting block 2, improve the structural stability and impact resistance of the flexible limiting block 2, prevent excessive deformation of the flexible limiting block 2 under the impact force of the turntable 4, and further extend the service life of the flexible limiting block 2.

[0034] The end of the spring 6 is hinged to the flexible limiting block 2 via the hinge shaft 5. The spring 6 is hinged to the base 3. The hinge shaft 5 is set in the vertical direction. The baffle 9 prevents the flexible limiting block 2 from rotating excessively. When the flexible limiting block 2 deforms, the hinge shaft 5 causes it to rotate adaptively around the hinge shaft 5, avoiding damage to the flexible limiting block 2 caused by rigid connection.

Claims

1. A radar antenna tilt adjustment limit device, characterized by: The application relates to a buffer block (1) and a limiting assembly, the limiting assembly comprising a flexible limiting block (2) arranged on a base (3), the buffer block (1) being arranged on a rotating disc (4), the working end face (201) of the flexible limiting block (2) being arranged in an inclined manner, the first end of the working end face (201) being inclined towards the middle part of the base (3), the end of the buffer block (1) being chamfered to form an inclined surface (101), the inclined surface (101) being in contact with the working end face (201) and sliding along the first end to the end of the working end face (201) with the rotation of the rotating disc (4), and the working end face (201) being in frictional engagement with the inclined surface (101).

2. The radar antenna elevation adjustment limiting device according to claim 1, characterized in that: The flexible limiting block (2) is connected to the base (3) by means of a spring (6), the axial direction of the spring (6) being parallel to the rotation axis of the rotating disc (4), the base (3) being provided with a baffle (9), and the baffle (9) being in sliding engagement with the back face of the flexible limiting block (2).

3. The radar antenna elevation adjustment limit device according to claim 2, characterized in that: The spring (6) is an air spring.

4. The radar antenna elevation adjustment limit device according to claim 2, characterized in that: The base (3) is provided with a first nylon gasket (7), the baffle (9) is provided with a second nylon gasket (11), the bottom of the flexible limiting block (2) is in slidable contact with the first nylon gasket (7), and the back face of the flexible limiting block (2) is in slidable contact with the second nylon gasket (11).

5. The radar antenna elevation adjustment limit device according to claim 2, wherein: The flexible limiting block (2) comprises a rubber layer (202) and a connecting steel plate (203), the fixed end of the connecting steel plate (203) is arranged in the rubber layer (202) and fixed to the rubber layer (202), the overhanging end of the connecting steel plate (203) extends outward from the rubber layer (202) and is fixed to a supporting frame (8), and the flexible limiting block (2) is connected to the spring (6) by means of the supporting frame (8).

6. A radar antenna tilt adjustment limit device according to claim 5, characterised in that: The flexible limiting block (2) further comprises a supporting steel plate (204), the supporting steel plate (204) and the rubber layer (202) are arranged alternately to form a layered structure.

7. The radar antenna elevation adjustment limit device according to claim 2, wherein: One end of the spring (6) is hingedly connected to the flexible limiting block (2) by means of a hinge shaft (5), and the hinge shaft (5) is arranged in the vertical direction.

8. The radar antenna elevation adjustment limit device according to claim 2, characterized in that: The limiting assembly further comprises a fixed limiting block (10) arranged on the base (3), the fixed limiting block (10) is arranged at the end of the flexible limiting block (2) and cooperates with the end of the buffer block (1) to form the fixed limiting of the rotating disc (4).

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