Target corrector for helicopter

Abstract

The utility model relates to a target corrector for a helicopter. The target corrector comprises a base and a target plate assembly, the multiple bases are placed on the ground, a vertical rod is fixedly inserted into each base, and a target plate assembly capable of adjusting the vertical height position is arranged on each vertical rod; the plurality of vertical rods support a cross rod, and a plurality of target plate assemblies capable of adjusting the horizontal position are arranged on the cross rod; the height position of the transverse rod on each vertical rod can be adjusted; during target correction, a laser transmitter consistent with an aiming line is arranged on the helicopter, and a target corrector is placed in front of the helicopter; the corresponding target plate assembly closest to the laser is found through the laser of the laser transmitter, the position of the target plate assembly is properly adjusted on the corresponding vertical rod / transverse rod, and the aiming line of the helicopter is preliminarily aligned with the position of the corresponding target plate assembly. The utility model has the beneficial effects that when the aiming line cannot be particularly and accurately aligned with the center of the target plate, automatic and accurate alignment is realized through the driving mechanism.

Description

Technical Field

[0001] The utility model relates to the technical field of helicopter collimation, in particular to a collimator for helicopters. Background Art

[0002] Special equipment is used to ensure that there is a certain distance between the optical axis and the longitudinal axis of the aircraft. This process is called axis collimation. And axis collimation (also known as target collimation) is carried out on military aircraft. At present, there are many ways of target collimation, such as the target board method, the automatic target collimation method, the "angle measurement" target collimation method, etc.

[0003] Generally speaking, since the aiming line (aiming line) of the aircraft fire control system is parallel to the geometric longitudinal axis of the aircraft, and the optical axes of the airborne radar and optoelectronic equipment, and the geometric longitudinal axes (weapon axes) of the airborne direct-fire weapons need to maintain a specified angular relationship with the aiming line during use. Therefore, an external test device is used to ensure that the weapon axis and the aiming line (the process that the optical axis / weapon axis and the longitudinal axis of the aircraft satisfy the specified spatial position relationship is target collimation).

[0004] Instrument target collimation: Instrument target collimation is a method of testing and adjusting the initial coordination relationship between shooting weapons and fire control systems, guided weapons and airborne guidance equipment, and the installation accuracy of unguided projection weapons and pylons using special instruments. Traditional instrument target collimation uses the target collimation method of direct-fire weapons and conducts target collimation through visual optical imaging methods. The general target collimation steps are as follows: 1. Make the helicopter have a physical horizontal plane; 2. Set a special target board: Set a special target board at a specified distance (25m or 50m) in front of the helicopter nose; 3. Use the collimator for target collimation: Insert the tail rod of the collimator into the gun barrel or rocket launch tube. At this time, the optical axis of the collimator represents the weapon axis. By observing the crosshair on the collimation mirror reticle and the target, the angle of deviation of the weapon axis can be measured and adjusted.

[0005] When the target board is placed at 25m / 50m in front of the helicopter, it is necessary for the helicopter to first determine the positional relationship between the central target point on the target board and the aiming point of the aiming line, then determine the relationship between the optical axis point of the weapon axis and the central target point on the target board, and finally determine the positional relationship between the aiming point of the aiming line and the optical axis point of the weapon axis.

[0006] In this solution, the central target point on the target board is automatically aligned with the aiming point of the aiming line, without calculating the positional relationship between the central target point on the target board and the aiming point of the aiming line. The positional relationship between the aiming point of the aiming line and the optical axis point of the weapon axis can be directly obtained by determining the relationship between the optical axis point of the weapon axis and the central target point on the target board, which is simpler and more convenient. Content of the Utility Model

[0007] The purpose of the utility model is to overcome the shortcomings of the prior art and provide a collimator for helicopters.

[0008] The object of the utility model is achieved by the following technical solutions: A target calibrator for a helicopter, comprising a base and a target plate assembly;

[0009] A plurality of the bases are placed on the ground, and a vertical rod is inserted and fixed on each base, and a target plate assembly capable of adjusting the vertical height position is arranged on each vertical rod;

[0010] A plurality of the vertical rods support a cross bar, and a plurality of target plate assemblies capable of adjusting the horizontal position are arranged on the cross bar; The cross bar can adjust the height position on each vertical rod;

[0011] The target calibration assembly includes a housing, a target plate and a driving mechanism; The housing is divided into a front cavity and a rear cavity by a partition board. The front cavity is sealed by a front glass plate to form a closed cavity. A target plate is placed in the front cavity, and a driving mechanism is arranged in the rear cavity; A magnet A is arranged on the circumference of the target plate, and a corresponding magnet B is arranged on the driving mechanism. After the driving mechanism applies a magnetic force to the magnet A, the target plate moves up, down, left and right in the front cavity to finely adjust the position of the target plate.

[0012] During target calibration: A laser transmitter consistent with the aiming line is installed on the helicopter, and the target calibrator is placed in front of the helicopter; Through the laser of the laser transmitter, find the corresponding target plate assembly closest to the laser, and appropriately adjust the position of the target plate assembly on the corresponding vertical rod / cross bar to initially align the aiming line of the helicopter with the position of the corresponding target plate assembly.

[0013] As a preferred technical solution of the present application, the vertical rod is spliced by a plurality of rod sections through a docking head, and the cross bar is spliced by a plurality of rod sections through a docking head.

[0014] As a preferred technical solution of the present application, balls are circumferentially arranged on the front side of the target plate. When the driving mechanism applies a magnetic force to the target plate, the target plate is pressed against the front glass plate through the balls; When the driving mechanism drives the target plate to finely adjust the up, down, left and right positions, the balls roll on the front glass plate.

[0015] As a preferred technical solution of the present application, a wireless laser sensor is arranged at the target point position on the side of the target plate, and a wireless laser sensor panel is arranged around the target point position. A laser transmitter consistent with the aiming line is arranged on the helicopter, and an additional laser transmitter consistent with the weapon axis is also arranged on the helicopter; A control panel for receiving signals generated by the wireless laser sensor is arranged on the driving mechanism; When the wireless laser sensor panel senses the laser, it indicates that the target point is not directly opposite to the laser, and transmits the sensed position signal to the control panel on the driving mechanism to make the driving mechanism drive the target plate to move; When the wireless laser sensor at the target point senses the laser, it transmits the sensed position signal to the control panel on the driving mechanism to make the driving mechanism stop moving.

[0016] As a preferred technical solution of the present application, the driving mechanism includes a transmission shaft, a worm, a smooth rod, a displacement block, a displacement frame, and an auxiliary frame;

[0017] The transmission shaft is arranged in the rear cavity of the housing in the front-rear direction. A rear worm gear is sleeved on the rear end of the transmission shaft. Two worm gears are respectively meshed at the upper and lower edge positions of the rear worm gear. The two worm gears are respectively arranged in the horizontal direction; the two worm gears are respectively connected by corresponding positive and negative self-locking stepping motors;

[0018] A front worm gear is installed at the front end position of the transmission shaft; corresponding smooth shafts are respectively arranged at the upper and lower positions at the front end of the transmission shaft. The two smooth shafts are arranged in the horizontal direction. A displacement block that can slide left and right is sleeved on the two smooth shafts; A displacement frame that can slide up and down is installed on the displacement block. One edge of the displacement frame is a rack edge, and the rack edge is meshed with the front worm gear;

[0019] The auxiliary frame is fixed on the displacement frame by bolts. Magnets B are arranged circumferentially on the auxiliary frame;

[0020] When the upper worm gear among the two worm gears rotates clockwise and the lower worm gear rotates counterclockwise, or the upper worm gear rotates counterclockwise and the lower positioning worm gear rotates clockwise, the rear worm gear remains stationary in the left-right position. Accordingly, the front worm gear and the displacement block do not move in the left-right position. However, the rear worm gear will drive the front worm gear to rotate through the transmission shaft, and the front worm gear drives the displacement frame to slide in the up-down position, thereby realizing the up-down position movement of the auxiliary frame, and further realizing the up-down position movement of the target plate;

[0021] When the two worm gears rotate synchronously clockwise and synchronously counterclockwise, the rear worm gear can be moved left and right, so that the transmission shaft drives the front worm gear, the displacement block, and the displacement frame to move left and right together. At this time, the front worm gear, the transmission shaft, and the rear worm gear do not rotate, thereby realizing the left-right position movement of the auxiliary frame, and further realizing the left-right position movement of the target plate.

[0022] As a preferred technical solution of the present application, when viewed from the projection formed from front to back, one magnet B and one magnet A form a pair, and the corresponding magnet B is located outside the corresponding magnet A.

[0023] As a preferred technical solution of the present application, when viewed from the projection formed from front to back, the geometric center surrounded by multiple magnets A overlaps with the geometric center surrounded by multiple magnets B; the number of magnets A is four, and the number of magnets B is four, which are evenly distributed along the front, rear, left, and right positions; the repulsive force provided by the magnet B at the lower position to the corresponding magnet A is greater than the repulsive force provided by the magnet B at the upper position to the corresponding magnet A to supplement gravity.

[0024] As a preferred technical solution of the present application, a cavity recessed inward is provided on the front surface of the target plate. A liquid metal capsule is provided in the recessed cavity. The liquid metal capsule contains a liquid metal that solidifies below five degrees Celsius and melts at room temperature, and has a small volume change during solidification. A low-temperature cooling semi-circular pipe is provided circumferentially around the liquid metal capsule. The semi-circular pipe is connected to a flowing and openable cold medium cold source through a pipeline. The cold medium cold source provides the cold quantity required for the liquid metal to solidify. An electric heater is also provided at the center of the recessed cavity of the target plate. The electric heater provides heat energy for the melting of the liquid metal. When the liquid metal capsule is placed in the inner recessed cavity of the target plate, the circumferential wall of the liquid metal capsule is fixedly connected to the circumferential wall of the recessed cavity by glue, and a spacing cavity is formed between the bottom wall of the liquid metal capsule and the inner recessed cavity. The spacing cavity is connected to an openable pressure gas source through a pipeline.

[0025] When the target plate is moving under the driving mechanism, at this time, the liquid metal capsule is not affected by the pressurized gas source, and at the same time, the electric heater remains working. When the target plate is finely adjusted to the position under the action of the driving mechanism, then the liquid metal capsule is affected by the pressurized gas source and is extruded outward to deform so that the liquid metal capsule abuts against the back surface of the target plate. Then the electric heater stops working, and the cold medium cold source flows to the liquid metal capsule to cool and solidify the liquid metal in the liquid metal capsule, so that the target plate is well fixed.

[0026] The utility model has the following advantages:

[0027] For a traditional target calibrator, its central target point is only a reference point. The positional relationship between the aiming point of the aiming line and the weapon point of the weapon axis needs to be completed with the help of the central target point, and a large amount of calculations are required to obtain the calibration coordinates. The calibration is very inconvenient.

[0028] Through corresponding structural designs, by providing corresponding laser emitters and corresponding induction panels, the target plate can automatically adjust its position so that the aiming point of the aiming line is located at the central target point. Then, the weapon point of the weapon axis can be sensed by the target plate. Taking the central target point as the coordinate origin to establish a rectangular coordinate system, the coordinates of the weapon point can be quickly obtained, and the positions of the weapon axis adjusted on the horizontal axis and the vertical axis can be quickly calculated. When the calibration personnel know the coordinate values that should be calibrated at this distance, they can calibrate simply and quickly manually. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a structural schematic diagram of the utility model;

[0030] Figure 2 It is a structural schematic diagram of the target plate unit (the front glass plate is not shown, and the front glass plates of all figures are not shown);

[0031] Figure 3 It is a structural schematic diagram of the target plate unit with the housing removed;

[0032] Figure 4 Schematic diagram of the structure of the target plate unit after removing the target plate;

[0033] Figure 5 Schematic diagram of the structure between the target plate assembly and the drive mechanism in the target plate unit;

[0034] Figure 6 Schematic diagram of the structure of the target plate;

[0035] Figure 7 Schematic diagram of the structure of the drive mechanism arranged in the rear cavity;

[0036] Figure 8 Schematic diagram of the structure of the drive mechanism arranged in the rear cavity after removing the auxiliary frame;

[0037] Figure 9 Schematic diagram of the structure between the moving frame and the moving block;

[0038] Figure 10 Another perspective schematic diagram of the structure between the moving frame and the moving block;

[0039] Figure 11 Schematic diagram of the structure between the optical rod, worm, transmission shaft, and rear turbine;

[0040] Figure 12 Schematic diagram of the structure of the drive mechanism;

[0041] Figure 13 Another perspective schematic diagram of the drive mechanism;

[0042] Figure 14 Exploded view of the drive mechanism;

[0043] Figure 15 Another perspective exploded view of the drive mechanism;

[0044] In the figure: 100 - base, 200 - cross bar, 300 - vertical bar;

[0045] 400 - target plate assembly;

[0046] 410 - housing, 420 - target plate, 421 - magnet A, 422 - ball;

[0047] 430 - drive mechanism, 431 - magnet B, 432 - transmission shaft, 432 - 1 - rear worm gear, 432 - 2 - front worm gear, 433 - worm, 434 - optical rod, 435 - displacement block, 436 - displacement frame, 436 - 1 - rack edge, 436 - 2 - round rod, 437 - auxiliary frame, 438 - positive and negative self - locking stepper motor;

[0048] 440 - liquid metal capsule. Detailed implementation mode

[0049] The following further describes the present utility model in conjunction with the accompanying drawings, but the protection scope of the present utility model is not limited to the following description.

[0050] It should be noted that the orientation or positional relationship indicated by "left", "right", etc. is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of this utility model is usually placed during use, or the orientation or positional relationship commonly understood by those skilled in the art. Such terms are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation to the present utility model.

[0051] It should be noted that, without conflict, the embodiments in the present utility model and the features and technical solutions in the embodiments can be combined with each other.

[0052] As Figure 1 shown, a target collimator for a helicopter includes a base 100 and a target plate assembly 400; a plurality of bases 100 are placed on the ground, and a vertical rod 200 is inserted and fixed on each base 100, and a target plate assembly 400 capable of adjusting the vertical height position is arranged on each vertical rod 200; in addition, a plurality of vertical rods 200 support a cross rod 300, and a plurality of target plate assemblies 400 capable of adjusting the horizontal position are arranged on the cross rod 300; the cross rod can adjust the height position on each vertical rod;

[0053] When collimating the target: a laser emitter consistent with the aiming line is installed on the helicopter, and the target collimator is placed in front of the helicopter; through the laser of the laser emitter, the corresponding target plate assembly 400 closest to the laser is found, and the position of the target plate assembly 400 is appropriately adjusted on the corresponding vertical rod 200 / cross rod 300 to initially align the aiming line of the helicopter with the position of the corresponding target plate assembly 400.

[0054] In this embodiment, the vertical rod 200 is spliced by a plurality of rod sections through a docking head, and the cross rod 300 is spliced by a plurality of rod sections through a docking head.

[0055] Refer to Figure 2 、 Figure 3 and Figure 5, the alignment target assembly 400 is designed, which includes a housing 410, a target plate 420, and a driving mechanism 430. Among them, the housing 410 is divided into a front cavity and a rear cavity by a partition 411. The front cavity forms a closed cavity after being sealed by a front glass plate. The target plate 420 is placed in the front cavity, and the driving mechanism 430 is arranged in the rear cavity. A magnet A 421 is circumferentially arranged on the target plate 420, and a corresponding magnet B 431 is arranged on the driving mechanism 430. After the driving mechanism 430 applies a magnetic force to the magnet A 421, the target plate 420 moves up, down, left, and right in the front cavity to finely adjust the position of the target plate.

[0056] In addition, referring to Figure 4 , for the smooth movement of the target plate 420 in the front cavity, balls 422 are circumferentially arranged on the front side surface of the target plate 420. When the driving mechanism 430 applies a magnetic force to the target plate 420, the target plate 430 is pressed against the front glass plate through the balls 422. When the driving mechanism 430 drives the target plate 420 to finely adjust the up, down, left, and right positions, the balls 422 roll on the front glass plate.

[0057] In addition, to achieve the automatic adjustment of the target plate 420, a wireless laser sensor is provided at the target point on the side surface of the target plate 420, and a wireless laser sensor panel is arranged around the target point position. A laser emitter consistent with the aiming line is provided on the helicopter, and an additional laser emitter consistent with the weapon axis is also provided on the helicopter. A control panel for receiving the signals generated by the wireless laser sensor is arranged on the driving mechanism 430. When the wireless laser sensor panel senses the laser, it indicates that the target point is not directly opposite to the laser, and the sensed position signal will be transmitted to the control panel on the driving mechanism 430 to make the driving mechanism 430 drive the target plate 420 to move. When the wireless laser sensor at the target point senses the laser, the sensed position signal will be transmitted to the control panel on the driving mechanism 430 to make the driving mechanism 430 stop moving.

[0058] When target calibration work is required: First, initially place the entire target calibrator in front of the helicopter, turn on the laser emitter that is aligned with the aiming line, and let the laser initially shine on the target board 420 - at this time, the laser point is not aligned with the central target point; after the laser sensor panel on the target board 420 senses the position of the laser point, it transmits a signal to the drive mechanism 430, and the drive mechanism 430 drives the target board 420 to move its position through magnetism. When the laser point is aligned with the central target point, the target board 420 stops moving, thus aligning the aiming line with the central target point, that is, aligning the geometric longitudinal axis of the fuselage with the central target point of the target board 420; Second, then an additional laser emitter is also provided at the weapon system, and the laser emitted by this laser emitter is aligned with the weapon axis. The laser emitter at the weapon system also generates a laser point on the target board 420, and this laser point is named the weapon point; Third, if a rectangular coordinate system is established with the central target point as the coordinate origin, the coordinate point of the weapon point can be quickly known; then the calibration personnel can quickly adjust the weapon point to the position that needs to be calibrated according to the specified calibration coordinates. The whole process is very simple, fast, and convenient, and is suitable for special situations where rapid calibration is required before the aircraft takes off.

[0059] Refer to Figure 3 、 Figures 8 - 15 , in order to facilitate the smooth movement of the drive mechanism 430, the alignment structure is designed;

[0060] Specifically, the drive mechanism 430 includes a transmission shaft 432, a worm 433, a smooth rod 434, a displacement block 435, a displacement frame 436, and an auxiliary frame 437;

[0061] The transmission shaft 432 is arranged in the rear cavity of the housing 410 in the front-back direction. A rear worm gear 432-1 is sleeved on the rear end of the transmission shaft 432. Two worm gears 433 are respectively meshed at the upper and lower edge positions of the rear worm gear 432-1, and the two worm gears 433 are respectively arranged in the horizontal direction; the two worm gears 433 are respectively connected by corresponding positive and negative self-locking stepping motors 438;

[0062] A front worm gear 432-2 is installed at the front end position of the transmission shaft 432; corresponding smooth shafts 434 are respectively arranged at the upper and lower positions at the front end of the transmission shaft 432. The two smooth shafts 434 are arranged in the horizontal direction. A displacement block 435 that can slide left and right is sleeved on the two smooth shafts 434. A central hole is opened on the displacement block 435, and the transmission shaft 432 passes through this central hole - they can rotate relative to each other; a displacement frame 436 that can slide up and down is installed on the displacement block 435. One edge of the displacement frame 436 is a rack edge 436-1, and the rack edge 436-1 is meshed with the front worm gear 432-2;

[0063] The auxiliary frame 437 is fixed to the displacement frame 436 by bolts, and a magnet B431 is circumferentially arranged on the auxiliary frame 437;

[0064] When the upper worm 433 among the two worms 433 rotates clockwise and the lower worm 433 rotates counterclockwise, or when the upper worm 433 rotates counterclockwise and the lower positioning worm 433 rotates clockwise, the rear worm gear 432-1 remains stationary in the left-right position. Accordingly, the corresponding front worm gear 432-2 and the displacement block 435 do not move in the left-right position. However, the rear worm gear 432-1 drives the front worm gear 432-2 to rotate via the transmission shaft 432. The front worm gear 432-2 drives the displacement frame 436 to slide in the up-down position, thereby realizing the up-down position movement of the auxiliary frame 437, and further realizing the up-down position movement of the target plate 420.

[0065] When the two worms 433 rotate synchronously clockwise or synchronously counterclockwise, the rear worm gear 432-1 can move left or right, so that the transmission shaft 432 drives the front worm gear 432-2, the displacement block 435, and the displacement frame 436 to move left or right together. At this time, the front worm gear 432-2, the transmission shaft 432, and the rear worm gear 432-1 do not rotate, thereby realizing the left-right position movement of the auxiliary frame 437, and further realizing the left-right position movement of the target plate 420.

[0066] In this embodiment, referring to Figure 9 and Figure 10 , the left edge of the displacement frame 436 is a round rod 436-2, and the right edge is a rack edge 436-1. The inner side of the rack edge 436-1 is in the shape of a rack; a round hole adapted to the round rod 436-2 is formed in the displacement block 435, and the two are slidably arranged. A chute adapted to the rack edge 436-1 is formed in the displacement block 435.

[0067] In this embodiment, when viewed from the projection formed from front to back, a magnet B431 and a magnet A421 form a pair, and the corresponding magnet B431 is located outside the corresponding magnet A421. And, when viewed from the projection formed from front to back, the geometric centers surrounded by the multiple magnets A421 overlap with the geometric centers surrounded by the multiple magnets B431; the number of magnets A421 is four, and the number of magnets B431 is four, which are evenly distributed along the front, back, left, and right positions; the repulsive force provided by the magnet B431 at the lower position to the corresponding magnet A421 is greater than the repulsive force provided by the magnet B431 at the upper position to the corresponding magnet A421 to supplement gravity.

[0068] Referring to Figure 3 as shown, in order to fix the target plate 420 well: the front surface of the target plate 420 has a cavity that is recessed inward. A liquid metal capsule 440 is provided in the recessed cavity. The liquid metal capsule 440 contains liquid metal that solidifies below five degrees Celsius and melts at normal temperature, and has a small volume change during solidification;

[0069] Among them, a low-temperature cooling semi-circular pipe is circumferentially arranged on the liquid metal capsule 440. The semi-circular pipe is connected to a flowing and openable cold medium cold source through a pipeline; the cold medium cold source provides the cold quantity that can solidify the liquid metal;

[0070] Among them, an electric heater is also arranged at the center of the cavity of the concave target plate 420. The electric heater provides heat energy for the melting of the liquid metal;

[0071] Among them, when the liquid metal capsule 440 is placed in the inner concave cavity of the target plate 420, the circumferential wall of the liquid metal capsule 440 is fixedly connected to the circumferential wall of the concave cavity in a sealed manner through glue, and a spacing cavity is formed between the liquid metal capsule 440 and the bottom wall of the inner concave cavity. The spacing cavity is connected to an openable and closable pressure gas source through a pipeline;

[0072] When the target plate 420 is moving in the driving mechanism 430, at this time, the liquid metal capsule 440 is not affected by the pressurized gas source, and the electric heater keeps working; when the target plate 420 is finely adjusted to the position under the action of the driving mechanism 430, then the liquid metal capsule 440 is affected by the pressurized gas source and is extruded and deformed outward - so that the liquid metal capsule 440 abuts against the back of the target plate 420, and then the electric heater stops working, and the cold medium cold source flows to the liquid metal capsule 440 - so that the liquid metal in the liquid metal capsule 440 cools and solidifies - takes shape, so that the target plate 420 is well fixed.

[0073] The above embodiments only express relatively preferred implementation manners, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the utility model patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the utility model, several deformations and improvements can still be made, and these all belong to the protection scope of the utility model.

Claims

1. A helicopter target calibration device, characterized in that: It comprises a base (100) and a target plate assembly (400); A plurality of bases (100) are placed on the ground, a vertical rod (200) is inserted and fixed on each base (100), and each vertical rod (200) is provided with a target plate assembly (400) capable of adjusting the vertical height position; A plurality of the vertical rods (200) support a horizontal rod (300), and a plurality of target plate assemblies (400) capable of adjusting horizontal positions are arranged on the horizontal rod (300); the height position of the horizontal rod on each vertical rod can be adjusted; During target calibration: a laser transmitter consistent with the sighting line is installed on the helicopter, and the target calibration device is placed in front of the helicopter; the corresponding target plate assembly (400) closest to the laser is found through the laser of the laser transmitter, and the position of the target plate assembly (400) is appropriately adjusted on the corresponding vertical rod (200) / cross rod (300) so that the sighting line of the helicopter is preliminarily aligned with the position of the corresponding target plate assembly (400); The target calibration assembly (400) comprises a housing (410), a target plate (420), and a driving mechanism (430); The housing (410) is divided into a front cavity and a rear cavity by a partition (411); the front cavity is blocked by a glass front plate to form a closed cavity; a target plate (420) is placed in the front cavity; and a driving mechanism (430) is provided in the rear cavity; The target plate (420) is provided with a magnet A (421) in the circumferential direction, and the driving mechanism (430) is provided with a corresponding magnet B (431). After the driving mechanism (430) applies magnetic force to the magnet A (421) via the magnet B (431), the target plate (420) is moved up, down, left, and right in the front cavity, thereby finely adjusting the position of the target plate.

2. A helicopter target calibration device according to claim 1, characterized in that: The vertical rod (200) is formed by splicing a plurality of rod sections via butt joints, and the horizontal rod (300) is formed by splicing a plurality of rod sections via butt joints.

3. The helicopter target calibration device according to claim 1, characterized in that: A ball bearing (422) is circumferentially arranged on the front side of the target plate (420); When the driving mechanism (430) applies magnetic force to the target plate (420), the target plate (430) is pressed against the glass front plate via the ball bearings (422); when the driving mechanism (430) drives the target plate (420) to finely adjust its position up, down, left, and right, the ball bearings (422) roll on the glass front plate.

4. A helicopter target calibration device according to claim 3, characterized in that: A wireless laser sensor is provided on the side of the target plate (420) at the target point, and a wireless laser sensor panel is provided around the target point. A laser transmitter consistent with the aiming line is provided on the helicopter, and an additional laser transmitter consistent with the weapon axis is also provided on the helicopter. The driving mechanism (430) is provided with a control panel for receiving signals generated by the wireless laser sensor; when the wireless laser sensor panel senses the laser, and the surface target point is not directly facing the laser, the sensed position signal is transmitted to the control panel on the driving mechanism (430) so that the driving mechanism (430) drives the target plate (420) to move; when the wireless laser sensor at the target point senses the laser, the sensed position signal is transmitted to the control panel on the driving mechanism (430) so that the driving mechanism (430) stops moving.

5. A helicopter target calibration device according to claim 4, characterized in that: The driving mechanism (430) comprises a transmission shaft (432), a worm (433), a polished rod (434), a displacement block (435), a displacement frame (436), and an auxiliary frame (437); The transmission shaft (432) is arranged in the rear cavity of the housing (410) along the front-to-back direction, the rear end of the transmission shaft (432) is sleeved with a rear worm wheel (432-1), and two worms (433) are respectively meshed and arranged at the upper and lower edge positions of the rear worm wheel (432-1), and the two worms (433) are respectively arranged in the horizontal direction; the two worms (433) are respectively connected through corresponding forward and reverse self-locking stepping motors (438); A rear worm gear (432-2) is installed at the front end of the transmission shaft (432); corresponding optical axes (434) are respectively arranged at the upper and lower positions of the front end of the transmission shaft (432); the two optical axes (434) are arranged in a horizontal direction; and displacement blocks (435) capable of sliding left and right are penetrated on the two optical axes (434); a displacement frame (436) capable of sliding up and down is installed on the displacement block (435); one edge of the displacement frame (436) is a rack edge (436-1), and the rack edge (436-1) is meshed with the front worm gear (432-2); The auxiliary frame (437) is fixed to the displacement frame (436) by bolts, and a magnet B (431) is arranged circumferentially on the auxiliary frame (437); When the upper worm (433) of the two worms (433) rotates clockwise and the lower worm (433) rotates counterclockwise, and the upper worm (433) rotates counterclockwise and the lower positioning worm (433) rotates clockwise, the rear worm wheel (432-1) remains stationary in the left and right positions, and the corresponding front worm wheel (432-2) and displacement block (435) do not move in the left and right positions, but the rear worm wheel (432-1) drives the front worm wheel (432-2) to rotate via the transmission shaft (432), and the front worm wheel (432-2) drives the displacement frame (436) to slide up and down, thereby realizing the up and down movement of the auxiliary frame (437), and further realizing the up and down movement of the target plate (420); When the two worms (433) rotate synchronously clockwise and counterclockwise, the rear worm wheel (432-1) can move leftward or rightward, thereby allowing the transmission shaft (432) to drive the front worm wheel (432-2), the displacement block (435), and the displacement frame (436) to move leftward or rightward together. At this time, the front worm wheel (432-2), the transmission shaft (432), and the rear worm wheel (432-1) do not rotate, thereby achieving the left-right movement of the auxiliary frame (437), and further achieving the left-right movement of the target plate (420).

6. A helicopter target calibration device according to claim 5, characterized in that: As seen from the projection formed from the front to the back, one magnet B (431) forms a pair with one magnet A (421), and the corresponding magnet B (431) is located outside the corresponding magnet A (421).

7. A helicopter target calibration device according to claim 6, characterized in that: From the projection formed from front to back, the geometric center formed by the plurality of magnets A (421) overlaps with the geometric center formed by the plurality of magnets B (431); The number of the magnets A (421) is four, and the number of the magnets B (431) is four, which are evenly distributed along the front, back, left and right positions; the repulsive force provided by the magnets B (431) located at the lower position to the corresponding magnets A (421) is greater than the repulsive force provided by the magnets B (431) located at the upper position to the corresponding magnets A (421), so as to supplement gravity.

8. A helicopter target calibration device according to any one of claims 3 to 7, characterized in that: The target plate (420) has an inwardly concave cavity at the front side, and a liquid metal capsule (440) is provided in the concave cavity. The liquid metal capsule (440) contains liquid metal that solidifies at a temperature below five degrees Celsius and melts at room temperature, and the volume change is small when solidifying; The liquid metal capsule (440) is provided with a low-temperature cooling semi-circular pipe in the circumference, and the semi-circular pipe is connected to a flowing and openable cold medium cold source through a pipeline; the medium cold source provides cold energy for solidification of the liquid metal; An electric heater is also provided at the center of the concave cavity of the target plate (420), and the electric heater allows the melting of the liquid metal to provide heat energy; When the liquid metal capsule (440) is placed in the inner concave cavity of the target plate (420), the circumferential wall of the liquid metal capsule (440) is sealed and fixedly connected to the circumferential wall of the concave cavity via glue, and a spacing cavity is formed between the liquid metal capsule (440) and the bottom wall of the inner concave cavity, and the spacing cavity is connected to an openable and closable pressure gas source via a pipeline; When the target plate (420) is moving in the driving mechanism (430), the liquid metal capsule (440) is not affected by the pressurized gas source, and the electric heater keeps working; when the target plate (420) is finely adjusted to a position under the action of the driving mechanism (430), the liquid metal capsule (440) is then affected by the pressurized gas source and is squeezed outward and deformed, so that the liquid metal capsule (440) is pressed against the back of the target plate (420), and then the electric heater stops working and the medium cold source flows to the liquid metal capsule (440), so that the liquid metal in the liquid metal capsule (440) is cooled and solidified to be fixed, so that the target plate (420) is well fixed.

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