Small radar platform swing device

Abstract

The utility model belongs to the technical field of radars, and provides a small radar platform swing device which comprises an upper platform, a lower platform and a swing mechanism, a radar circuit board and a protective shell are installed below the lower platform, and the protective shell is used for protecting a main control board installed on the lower platform and the radar circuit board installed on the upper platform. A supporting shaft is arranged on the lower portion of the center of the upper platform and rotationally connected with an upper platform supporting frame, and the upper platform supporting frame is fixedly connected with the lower platform. A swing mechanism is arranged between the lower platform and the upper platform, a motor of the swing mechanism drives a fine adjustment disc to rotate, the fine adjustment disc drives a connecting rod, the connecting rod then drives the upper platform to swing, a motor fine adjustment mechanism is installed on the lower platform, the position of the motor is finely adjusted, a disc fine adjustment mechanism is installed on the fine adjustment disc, and the relative position of the connecting rod and the fine adjustment disc is finely adjusted. According to the device, high-frequency radar swing can be realized under the condition that the power supply direction of the motor is not changed, and the swing angle can be adjusted.

Description

Technical Field

[0001] The utility model belongs to the technical field of radars and relates to a mechanical device for supporting and moving a radar system, in particular to a small radar platform swing device. Background Art

[0002] A radar platform swing mechanism is a mechanical device used to support and move a radar system. It enables the radar to swing within a range of angles to improve its detection range and accuracy. This device is commonly used for dynamic scanning and target tracking in radar antenna systems, and is particularly widely used on mobile platforms such as drones, vehicles, and robots.

[0003] The portable radar tripod system designed by Zheng Guowei and others in 2022 is lightweight and easy to use, but requires manual adjustment of pitch and roll angles, resulting in limited precision and increased time and labor costs. The two-degree-of-freedom radar gimbal designed by Hong Xinlong and others in 2021 uses a stepper motor. While it performs well at low speeds, it is prone to losing steps at high speeds, requiring a complex design that increases cost and size. The outdoor fire radar system designed by Zhu Minghang in 2024 uses an intelligent variable-speed gimbal with power-off self-locking and 360-degree rotation. However, its complex structure and high power consumption make it unsuitable for installation in remote areas and result in high maintenance costs. Utility Model Content

[0004] The utility model provides a small radar platform swing device, which can realize high-frequency radar swing without changing the power supply direction of the motor, and can realize electric adjustment of the swing angle.

[0005] The technical solution adopted by the present invention to achieve the above-mentioned purpose is:

[0006] A small radar platform swing device comprises an upper platform, a lower platform and a swing mechanism, wherein a main control board and a protective shell are installed below the lower platform, the protective shell is used to protect the main control board installed on the lower platform, and a radar circuit board can be installed on the upper platform, and a support shaft is provided at the lower center of the upper platform, the support shaft is rotatably connected to the upper platform support frame, and the upper platform support frame is fixedly connected to the lower platform; a swing mechanism is provided between the lower platform and the upper platform, and the swing mechanism comprises a connecting rod, a fine-tuning disk and a motor, the motor is provided on the lower platform and is used to drive the fine-tuning disk to rotate, and the two ends of the connecting rod are respectively connected to the disk surface of the fine-tuning disk and one side of the upper platform. When the fine-tuning disk rotates, the upper platform can be driven to swing by the connecting rod, and a motor fine-tuning mechanism is installed above the lower platform to fine-tune the motor position, and a disc fine-tuning mechanism is installed on the fine-tuning disk to fine-tune the relative position of the connecting rod and the fine-tuning disk.

[0007] Furthermore, the protective shell is connected and fixed to the lower platform by screws.

[0008] Furthermore, the support shaft is rotatably connected to the upper platform support frame through a bearing seat, and the upper platform support frame is fixedly connected to the lower platform through a long copper column.

[0009] Furthermore, the motor is fixed on the lower platform through a motor bracket.

[0010] Furthermore, the motor fine-tuning mechanism includes a motor fine-tuning platform support frame, a square hole is processed on the motor fine-tuning platform support frame, a fine-tuning motor fixing plate is fixed in the square hole, the motor fine-tuning motor is installed on the fine-tuning motor fixing plate, a screw 1 is provided on one side of the square hole, the motor fine-tuning motor is meshed and connected with gear 2 on screw 1 through gear 1, a slider 1 is provided on screw 1, slider 1 is connected to the motor bracket, a light rod is provided on the side of the square hole away from screw 1 and parallel to screw 1, and the light rod is connected to the motor bracket through slider 2.

[0011] Furthermore, the motor fine-tuning platform support frame is inclined, forming a support angle with the lower platform.

[0012] Furthermore, the disc fine-tuning mechanism includes a disc fine-tuning motor and a lead screw 2, which are installed in grooves processed on the fine-tuning disc; the disc fine-tuning motor is meshed with gear 4 on lead screw 2 through gear 3, and a slider 3 is provided on lead screw 2, which is connected to one side of the connecting rod and fastened by a fastening screw; the other side of the connecting rod is connected to the upper platform through a parent and child nail.

[0013] Furthermore, a ball bearing is provided on the contact surface between the slider three and the fine-tuning disk to ensure stable and smooth sliding between the slider three and the fine-tuning disk.

[0014] Furthermore, a disc power supply device is provided on the lower platform. Two metal rings are provided on the side of the fine-tuning disk and are distributed parallel to the axis of the fine-tuning disk. The inner rings of the metal rings are connected to the positive and negative poles of the disc fine-tuning motor through metal wires, and the outer sides of the metal rings are connected to the disc power supply device to supply power to the disc fine-tuning motor.

[0015] Furthermore, the disc power supply device includes a metal shrapnel, one end of which is connected to the power supply device support frame, and the metal shrapnel has two protrusions distributed along the axial direction of the disc at one end away from the power supply device support frame, and the two protrusions are respectively in contact with the two metal rings on the disc. A circuit is provided on the metal shrapnel, and the other end is connected to the control board. A spring and an electromagnet are provided on the power supply device support frame, and the spring pushes the protrusion of the shrapnel away from the disc to cut off the power. After power is supplied, the electromagnet attracts the protrusion of the shrapnel close to the disc to achieve contact power supply.

[0016] The beneficial effects of the present invention are:

[0017] 1. This device can achieve high-frequency reciprocating swing of the radar circuit board without changing the direction of the motor. Compared with the swing control directly through gear transmission, it has a longer motor service life.

[0018] 2. This device uses a combination of a motor fine-tuning mechanism and a disc fine-tuning mechanism to achieve swing angle adjustment of the upper platform within a certain angle. Compared with the mechanism of directly replacing connecting rods of different lengths, it can save labor costs and material costs and has higher practicality.

[0019] 3. This device uses an automatic disconnection power supply method. The electromagnet attracts the metal shrapnel to contact the fine-tuning disk to realize the power supply function of the disk fine-tuning motor, avoiding the winding problem caused by the rotation of the disk. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 This is a schematic diagram of the motor fine-tuning mechanism structure in the present invention;

[0022] Figure 3 for Figure 2 A-direction view;

[0023] Figure 4 This is a schematic diagram of the disc fine-tuning mechanism structure of the present invention;

[0024] Figure 5 Schematic diagram of the upper platform structure in the present invention;

[0025] Figure 6 This is a schematic diagram of the power supply mechanism structure of the present invention;

[0026] In the figure: 101, main control board; 102, radar circuit board; 201, copper pillar; 202, upper platform; 301, bearing seat; 302, upper platform support frame; 303, long copper pillar; 304, fastening nut; 305, female screw; 306, sub screw; 307, support shaft; 401, connecting rod; 402, fine-tuning disk; 403, lead screw 2; 404, slider 2; 405, gear 3; 406, gear 4; 407, disc fine-tuning motor; 408, fastening screw; 40 9. Ball bearing; 501. Power supply device support frame; 502. Metal shrapnel; 503. Spring; 504. Electromagnet; 505. Metal ring; 601. Motor fine-tuning platform support frame; 602. Motor bracket; 603. Motor; 604. Fine-tuning motor fixing plate; 605. Motor fine-tuning motor; 606. Lead screw 1; 607. Slider 1; 608. Polished rod; 609. Gear 1; 610. Gear 2; 611. Slider 2; 701. Lower platform; 702. Protective casing. DETAILED DESCRIPTION

[0027] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0028] In order to enable those skilled in the art to better understand the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of this application.

[0029] like Figure 1-6 As shown, a small radar platform swing device includes a lower platform 701, a radar circuit board 102 and a protective shell 702 are installed below the lower platform 701, and the protective shell 702 is connected to the lower platform 701 by screws. The protective shell 702 is used to protect the radar circuit board 102 installed on the lower platform 701. A motor fine-tuning mechanism is installed above the lower platform 701. The motor fine-tuning mechanism consists of an inclined motor fine-tuning platform support frame 601, a motor fine-tuning motor 605 and its components, a motor bracket 602 and a motor 603. The motor bracket 602 A motor 603 is provided on the upper surface, and a disc fine-tuning mechanism is installed on the motor 603. The disc fine-tuning mechanism is provided with a disc fine-tuning motor 407, a disc fine-tuning screw 403 and a disc fine-tuning slider 404. The disc fine-tuning mechanism is connected to one side of the connecting rod 401 through the disc fine-tuning slider 404, and the other side of the connecting rod 401 is connected to the upper platform 202 through the sub-screw 306 and the mother screw 305. The motor 603 is connected to the upper platform 202 through the disc fine-tuning mechanism and the connecting rod 401, and the connecting rod swinging mechanism is used to drive the upper platform 202 to reciprocate when the disc rotates. The main control board 101 is installed on the upper part of the upper platform 202, and the main control board 101 is fixed to the upper platform 202 through the copper column 201. A support shaft 307 is provided at the lower center of the upper platform 202. The support shaft 307 is connected to the upper platform support frame 302 through the bearing seat 301 and fixed by the fastening nut 304. The upper platform support frame 302 is connected to the lower platform 701 through the long copper column 303.

[0030] The specific motor fine-tuning mechanism includes an inclined motor fine-tuning platform support frame 601, a square hole is processed on the motor fine-tuning platform support frame 601, a fine-tuning motor fixing plate 604 is fixed in the square hole, a motor fine-tuning motor 605 is installed on the fine-tuning motor fixing plate 604, a screw 1 606 is provided on one side of the square hole, the motor fine-tuning motor 605 is meshed and connected with the gear 2 610 on the screw 1 606 through the gear 1 609, a slider 1 607 is provided on the screw 1 606, the slider 1 607 is connected to the motor bracket 602, and a light rod 608 is provided on the side of the square hole away from the screw 1 606 and parallel to the screw 1 606, and the light rod 608 is connected to the motor bracket 602 through the slider 2 611.

[0031] The specific disc fine-tuning mechanism includes a fine-tuning disc 402, a groove is machined on the fine-tuning disc 402, a disc fine-tuning motor 407 and a lead screw 2 403 are installed in the groove, the disc fine-tuning motor 407 is meshed and connected with the gear 4 405 on the lead screw 2 403 through the gear 3 406, a slider 3 404 is provided on the lead screw 2 403, the slider 3 404 is connected to the connecting rod 401 and is fastened by a fastening screw 408; a ball 409 is provided on the contact surface between the slider 3 404 and the fine-tuning disc 402 to ensure that the slider 3 404 slides stably and smoothly.

[0032] Two metal rings 505 are provided on the side of the fine-tuning disk 402 and are distributed parallel to the axis of the fine-tuning disk 402. The inner rings of the metal rings 505 are connected to the positive and negative poles of the disk fine-tuning motor 407 through metal wires, and the outer sides of the metal rings 505 are connected to the disk power supply device to power the disk fine-tuning motor 407.

[0033] The specific disc power supply device includes a metal shrapnel 502, one end of which is connected to the power supply device support frame 501, and the other end has two protrusions distributed along the axial direction of the fine-tuning disk 402, and the protrusions are respectively in contact with the two metal rings 505 on the fine-tuning disk. A circuit is provided on the metal shrapnel 502, and the other end is connected to the circuit board. A spring 503 and an electromagnet 504 are provided on the power supply device support frame. The spring 503 pushes the protrusion of the metal shrapnel 502 away from the fine-tuning disk 402 to achieve power off. After power is supplied, the electromagnet 504 attracts the protrusion of the metal shrapnel 502 close to the fine-tuning disk 402 to achieve contact power supply.

[0034] Its working process is mainly divided into two parts: platform swing and angle adjustment.

[0035] The platform swing is controlled by the main control board, and the platform swing speed can be controlled by controlling the input current of the motor.

[0036] The platform swing angle is related to the motor fine-tuning mechanism and the disc fine-tuning mechanism. By controlling the rotation of the disc fine-tuning motor to adjust the distance from slider 2 to the center of the fine-tuning disk, the platform swing amplitude is adjusted. The motor fine-tuning mechanism is used to adjust the motor position, thereby controlling the upper platform swing angle to be symmetrical around the support axis.

[0037] When the platform's swing angle needs to be precisely adjusted, the main control board controls the following steps: a. The electromagnet is energized, and the metal dome, attracted by the electromagnet, contacts the fine-tuning disk, providing power to the control circuit. b. The swing angle is input to the main control board. After program calculation, the circuit outputs proportional current, regulating the operation of the fine-tuning motor and the disc fine-tuning motor to achieve the desired angle control.

Claims

1. A small radar platform swing device, characterized by: The cam is mounted on a chassis that is configured to move the actuator member to a position adjacent to the chassis and to move the actuator member to a position adjacent to the chassis. The cam is mounted on a chassis that is configured to move the actuator member to a position adjacent to the chassis. The cam is mounted on a chassis that is configured to move the actuator member to a position adjacent to the chassis.

2. A small radar platform swing device according to claim 1, characterized in that: The protective shell is connected and fixed to the lower platform by screws.

3. The small radar platform swing device according to claim 1, characterized in that: The support shaft is rotatably connected to the upper platform support frame through a bearing seat, and the upper platform support frame is fixedly connected to the lower platform through a long copper column.

4. The small radar platform swing device according to claim 1, characterized in that: The motor is fixed on the lower platform through a motor bracket.

5. The small radar platform swing device according to claim 1, characterized in that: The motor fine-tuning mechanism includes a motor fine-tuning platform support frame, a square hole is processed on the motor fine-tuning platform support frame, a fine-tuning motor fixing plate is fixed in the square hole, a motor fine-tuning motor is installed on the fine-tuning motor fixing plate, a lead screw 1 is provided on one side of the square hole, the motor fine-tuning motor is meshed and connected with a gear 2 on the lead screw 1 through a gear 1, a slider 1 is provided on the lead screw 1, the slider 1 is connected to the motor bracket, a polished rod is provided on the side of the square hole away from the lead screw 1 and parallel to the lead screw 1, and the polished rod is connected to the motor bracket through a slider 2.

6. The small radar platform swing device according to claim 5, characterized in that: The motor fine-tuning platform support frame is inclined, forming a support angle with the lower platform.

7. The small radar platform swing device according to claim 1, characterized in that: The disc fine-tuning mechanism includes a disc fine-tuning motor and a lead screw 2, which are installed in grooves processed on the fine-tuning disc; the disc fine-tuning motor is meshed with a gear 4 on the lead screw 2 through a gear 3, and a slider 3 is provided on the lead screw 2, which is connected to one side of the connecting rod and fastened by a fastening screw; the other side of the connecting rod is connected to the upper platform through a parent and child nail.

8. The small radar platform swing device according to claim 7, characterized in that: The contact surface between the slider three and the fine-tuning disk is provided with a ball bearing to ensure stable and smooth sliding between the slider three and the fine-tuning disk.

9. The small radar platform swing device according to claim 1, characterized in that: A disc power supply device is also provided on the lower platform. Two metal rings are provided on the side of the fine-tuning disk and are distributed parallel to the axis of the fine-tuning disk. The inner rings of the metal rings are connected to the positive and negative poles of the disc fine-tuning motor through metal wires, and the outer sides of the metal rings are connected to the disc power supply device to supply power to the disc fine-tuning motor.

10. The small radar platform swing device according to claim 9, characterized in that: The disc power supply device includes a metal shrapnel, one end of which is connected to the power supply device support frame, and the metal shrapnel has two protrusions distributed along the axial direction of the disc at the end away from the power supply device support frame, and the two protrusions are respectively in contact with the two metal rings on the disc. A circuit is provided on the metal shrapnel, and the other end is connected to the control board. A spring and an electromagnet are provided on the power supply device support frame, and the spring pushes the protrusion of the metal shrapnel away from the fine-tuning disk to achieve power off. After power is supplied, the electromagnet attracts the protrusion of the metal shrapnel close to the fine-tuning disk to achieve contact power supply.

Images