A combined optoelectronic target system

Abstract

The application discloses a combined photoelectric target surface system, which comprises a vehicle-mounted cabin, a lifting platform, a servo turntable and a target; the upper part of the vehicle-mounted cabin is provided with a storage groove, the bottom of the storage groove is provided with a guide column, a supporting sliding block is installed on the guide column, and a supporting spring is arranged on the lower side of the supporting sliding block; the lifting platform is arranged at the bottom of the storage groove; the servo turntable comprises a base, a rotating frame, a first driving mechanism and a second driving mechanism, the base is fixed on the lifting platform, the rotating frame is installed on the base through a vertical rotating shaft, the first driving mechanism drives the vertical rotating shaft to rotate, the left and right sides of the rotating frame are provided with stand columns, coaxial horizontal rotating shafts are arranged on the two stand columns, and the second driving mechanism drives the horizontal rotating shafts to rotate; the target is fixed between the horizontal rotating shafts, and the target is provided with a guide sleeve matched with the guide column. The application can be collected for better protection when not in use, and can avoid the problem that the shaft system and the transmission mechanism are damaged due to shaking during transportation.

Description

Technical Field

[0001] This invention relates to the field of target technology, and more specifically to a combined photoelectric target system. Background Technology

[0002] The combined optoelectronic target surface system, also known as a vehicle-mounted optoelectronic target, is mainly installed on a launch vehicle. It primarily includes a laser / infrared target, a lifting platform, a servo turntable, and a ground-based display and control system. The target is fixed on the servo turntable, which controls the rotation of the entire target surface. Both the target plate and the servo turntable are fixed on the lifting platform, which can raise the servo turntable. The display and control system can control the rotation of the servo turntable and the temperature changes of the infrared target surface unit. When not in use, the target is exposed and cannot be protected. Furthermore, during transportation, the target is prone to shaking, which can easily damage the shaft system and transmission mechanism. Summary of the Invention

[0003] To address the shortcomings of existing technologies, this invention provides a combined photoelectric target system that can be stored away for better protection when not in use, while also preventing damage to the shaft system and transmission mechanism caused by shaking during transportation.

[0004] This invention provides a combined photoelectric target system, including a vehicle-mounted cabin, a lifting platform, a servo turntable, and a target;

[0005] The upper part of the vehicle compartment is provided with a storage slot, and each of the four corners at the bottom of the storage slot is provided with an upwardly extending guide post. A support slider is slidably installed on the guide post, and a support spring is also sleeved on the guide post to support the lower side of the support slider.

[0006] The lifting platform is located at the center of the bottom of the storage slot;

[0007] The servo turntable includes a base, a rotating frame, a first drive mechanism, and a second drive mechanism. The base is fixed on the lifting platform. The bottom of the rotating frame is rotatably mounted on the base via a vertical rotating shaft. The first drive mechanism is used to drive the vertical rotating shaft to rotate. The left and right sides of the rotating frame are provided with upwardly extending columns. A horizontal rotating shaft is coaxially arranged on the relatively inner sides of the two columns. The second drive mechanism is used to drive the horizontal rotating shaft to rotate.

[0008] The target is fixed between two horizontal rotating shafts. The four corners of the target are provided with guide sleeves that are adapted to each of the guide posts. When the target is flat, each guide sleeve is aligned with each guide post.

[0009] Furthermore, each of the supporting sliders is connected to a rack extending upward and fitting into a vertical guide groove on the side wall of the storage slot. The top of the vehicle compartment is rotatably provided with a rotating shaft on each side of the storage slot. A rotating cover plate and two gears that mesh with the two racks on the corresponding sides are fixedly connected to each rotating shaft. When the lifting platform lowers the flat target into the storage slot, the rotating cover plates on both sides rotate towards the middle and close to the upper side of the storage slot.

[0010] Furthermore, a rubber pad is provided on the upper side of each of the aforementioned support sliders.

[0011] Furthermore, a guide groove is vertically arranged at the center of the storage slot, the lifting platform is adapted to the guide groove, a telescopic column is provided at the bottom of the guide groove, a telescopic column receiving slot is provided at the bottom of the lifting platform, and the upper end of the telescopic column is fixed to the top of the telescopic column receiving slot.

[0012] Furthermore, the target includes a laser target and an infrared target, which are arranged opposite each other with a gap between them. The left and right sides of the laser target and the infrared target are connected by connecting plates, and the connecting plates on both sides of the target are fixedly connected to the horizontal rotating shafts on both sides.

[0013] Furthermore, the infrared target includes an outer frame, a target element support member disposed inside the front of the outer frame, and a back plate disposed inside the back of the outer frame. The target element support member is provided with multiple partitions, and each partition is equipped with an independently temperature-controlled target element.

[0014] Furthermore, each target element has a circuit board on its back side, and a plurality of first connecting posts are provided on the back side of the target element. The circuit board is fixed to the first connecting posts by screws, and the circuit board is electrically connected to the target element through the first connecting posts. A plurality of second connecting posts are provided on the back side of the circuit board, and a conductive sheet is provided on the inner side of the back plate. The back plate is fixed to the second connecting posts by screws, and each circuit board is electrically connected to the conductive sheet through the second connecting posts.

[0015] Furthermore, the first drive mechanism includes a first motor fixed inside the base, a first worm gear installed at the output end of the first motor, and a first worm wheel coaxially fixed to the lower end of the vertical shaft and meshing with the first worm gear.

[0016] Furthermore, the upper ends of the two columns are respectively provided with a drive housing and a limiting housing. The two horizontal rotating shafts are respectively installed on the drive housing and the limiting housing. The second drive mechanism is located inside the drive housing. The limiting housing is provided with a mechanical limiting mechanism, which includes two sets of limiting members and a fixing sleeve. The two sets of limiting members are symmetrically arranged on the lower sides of both sides of the horizontal rotating shaft. The limiting member includes a support column, a limiting sleeve, and a buffer spring. The lower end of the support column is fixed to the lower side of the limiting housing. A support platform is provided on the outer periphery of the support column. The limiting sleeve is slidably sleeved on the upper end of the support column. The buffer spring is sleeved on the support column and supported between the support platform and the limiting sleeve. The fixing sleeve is fixed on the horizontal rotating shaft. The outer wall of the fixing sleeve is provided with a limiting protrusion that can abut against the upper side of the limiting sleeve on both sides.

[0017] Furthermore, the second drive mechanism includes a second motor fixed inside the drive housing, a second worm gear installed at the output end of the second motor, and a second worm wheel coaxially fixed to the side end of the horizontal rotating shaft and meshing with the second worm gear.

[0018] The beneficial effects of this invention are as follows:

[0019] This application mounts a servo turntable on a lifting platform and a target on the servo turntable. During use, the lifting platform can adjust the height of the target, and the servo turntable can adjust the azimuth and pitch angle of the target, thus achieving any orientation of the target surface. When not in use, the target can be retracted. To retract the target, first rotate it to a horizontal position, then lower it using the lifting platform. When the target is lowered into the storage slot, the guide sleeves at the four corners of the target are fitted onto the guide posts, positioning the four corners of the target. Simultaneously, each corner of the target is held in place by a support spring on its underside. This ensures that the target will not shake during transportation. Therefore, compared to existing technologies, the target in this application can be retracted for better protection when not in use, and it avoids damage to the shaft system and transmission mechanism caused by shaking during transportation. Attached Figure Description

[0020] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the accompanying drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0021] Figure 1 This is a schematic diagram of the structure during use in an embodiment of the present invention;

[0022] Figure 2This is a schematic diagram of the structure when retracted according to an embodiment of the present invention;

[0023] Figure 3 This is a perspective view of the servo turntable and the target in an embodiment of the present invention;

[0024] Figure 4 This is a side view of the servo turntable and the target in an embodiment of the present invention;

[0025] Figure 5 for Figure 4 AA section view;

[0026] Figure 6 for Figure 5 BB section view;

[0027] Figure 7 This is a schematic diagram of the infrared target element and the circuit board in an embodiment of the invention.

[0028] Reference numerals: 100-Vehicle compartment; 110-Storage slot; 111-Vertical guide slot; 112-Guide slot; 120-Guide column; 121-Support slider; 122-Support spring; 123-Rack; 124-Rubber pad; 130-Rotating shaft; 131-Rotating cover plate; 132-Gear; 200-Lifting platform; 210-Telescopic column; 220-Telescopic column receiving slot; 300-Servo turntable; 310-Base; 320-Rotating frame; 321-Vertical rotating shaft; 322-Column; 323-Horizontal rotating shaft; 324-Drive housing; 325-Limiting housing; 330-First drive mechanism; 331-First motor; 332-First worm gear; 333-First worm gear; 340-Second drive mechanism; 341-Second motor; 342-Second worm; 343-Second worm gear; 350-Mechanical limiting mechanism; 351-Limiting component; 3511-Support column; 3512-Limiting sleeve; 3513-Buffer spring; 3514-Support platform; 352-Fixing sleeve; 3521-Limiting protrusion; 400-Target; 410-Guide sleeve; 420-Laser target; 430-Infrared target; 431-Outer frame; 432-Target element support component; 433-Back plate; 434-Target element; 4341-First connecting column; 435-Circuit board; 4351-Second connecting column; 440-Connecting plate. Detailed Implementation

[0029] The embodiments of the technical solution of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the technical solution of the present invention and are therefore intended to limit the scope of protection of the present invention.

[0030] It should be noted that, unless otherwise stated, the technical or scientific terms used in this application should have the ordinary meaning as understood by one of ordinary skill in the art to which this invention pertains.

[0031] like Figures 1-7 As shown, this embodiment of the invention provides a combined photoelectric target system, including a vehicle-mounted cabin 100, a lifting platform 200, a servo turntable 300, and a target 400.

[0032] The upper part of the vehicle compartment 100 is provided with a storage slot 110. At the four corners of the bottom of the storage slot 110, there is an upwardly extending guide post 120. A support slider 121 is slidably installed on the guide post 120. A support spring 122 supporting the lower side of the support slider 121 is also sleeved on the guide post 120.

[0033] The lifting platform 200 is located at the center of the bottom of the storage compartment 110. Specifically, refer to... Figure 2 and Figure 3 A guide groove 112 is vertically arranged at the center of the storage groove 110. The lifting platform 200 is adapted to the guide groove 112. A telescopic column 210 is arranged at the bottom of the guide groove 112. A telescopic column receiving groove 220 is arranged at the bottom of the lifting platform 200. The upper end of the telescopic column 210 is fixed to the top of the telescopic column receiving groove 220. In this way, the lifting platform 200 can be driven to rise and fall by controlling the telescopic column 210 to extend and retract. In this embodiment, the telescopic column 210 can be a multi-stage hydraulic cylinder or an electric cylinder.

[0034] The servo turntable 300 includes a base 310, a rotating frame 320, a first drive mechanism 330, and a second drive mechanism 340. The base 310 is fixed on the lifting platform 200. The bottom of the rotating frame 320 is rotatably mounted on the base 310 via a vertical rotating shaft 321. The first drive mechanism 330 is used to drive the vertical rotating shaft 321 to rotate. The left and right sides of the rotating frame 320 are provided with upwardly extending columns 322. The inner sides of the two columns 322 are coaxially provided with a horizontal rotating shaft 323. The second drive mechanism 340 is used to drive the horizontal rotating shaft 323 to rotate.

[0035] The target 400 is fixed between the horizontal rotating shafts 323 on both sides. The four corners of the target 400 are provided with guide sleeves 410 that are adapted to each guide post 120. When the target 400 is placed flat, each guide sleeve 410 is aligned with each guide post 120.

[0036] This application mounts a servo turntable 300 on a lifting platform 200 and a target 400 on the servo turntable 300. During use, the lifting platform 200 can adjust the height of the target 400, and the servo turntable 300 can adjust the azimuth and pitch angle of the target 400, thus achieving arbitrary orientation of the target surface. When not in use, the target 400 can be retracted. To retract the target 400, first rotate it to a horizontal position, then lower it using the lifting platform 200. When the target 400 is lowered into the storage slot 110, the guide sleeves 410 at the four corners of the target 400 are fitted onto the guide posts 120 one by one, so that the four guide posts 120 position the four corners of the target 400. At the same time, each corner of the target 400 is held in place by the support spring 122 on its lower side. In this way, the target 400 will not shake during transportation. Therefore, compared with the prior art, the target 400 of this application can be folded up for better protection when not in use, and can avoid the problem of damage to the shaft system and transmission mechanism caused by shaking during transportation.

[0037] In some embodiments, refer to Figure 1 and Figure 2 Each supporting slider 121 has a rack 123 connected to its side, which extends upward and fits into the vertical guide groove 111 on the side wall of the storage slot 110. The top of the vehicle compartment 100 is rotatably provided with a rotating shaft 130 on each side of the storage slot 110. A rotating cover plate 131 and two gears 132 that mesh with the two racks 123 on the corresponding side are fixedly connected to each rotating shaft 130. When the lifting platform 200 lowers the flat target 400 into the storage slot 110, the rotating cover plates 131 on both sides rotate towards the middle and close to the upper side of the storage slot 110.

[0038] like Figure 1 As shown, during use, the rotating cover plates 131 on both sides of the storage slot 110 open, and the target 400 extends out of the storage slot 110. When it is necessary to retract the target 400, the target 400 is rotated to a horizontal position and lowered by the lifting platform 200. The guide sleeves 410 at the four corners of the target 400 are fitted onto the guide posts 120 one by one. During the descent of the target 400 in the storage slot 110, it will drive the support sliders 121 on each guide post 120 to move downward, which in turn drives the racks 123 connected to each support slider 121 to move downward. The downward movement of each rack 123 will drive each gear 132 to rotate, thereby driving the rotating cover plates 131 on both sides to rotate towards the middle and close onto the upper side of the storage slot 110 (e.g., Figure 2As shown, when the target 400 needs to be launched, the lifting platform 200 raises the target 400 upwards. The support sliders 121 on each guide column 120 move upwards under the action of the support springs 122, which in turn drives the racks 123 connected to each support slider 121 to move upwards. The upward movement of each rack 123 can drive each gear 132 to rotate, thereby driving the rotating cover plates 131 on both sides to rotate and open to both sides.

[0039] In order to buffer the contact between the support slider 121 and the target 400, a rubber pad 124 is provided on the upper side of each support slider 121.

[0040] In some embodiments, refer to Figure 3 and Figure 4 The target 400 includes a laser target 420 and an infrared target 430, which are arranged opposite each other with a gap between them. The left and right sides of the laser target 420 and the infrared target 430 are connected by connecting plates 440, and the connecting plates 440 on both sides of the target 400 are fixedly connected to the horizontal rotating shafts 323 on both sides.

[0041] In this embodiment, the two sides of the target 400 are respectively set as an infrared target 430 and a laser target 420. The infrared target 430 mainly simulates the characteristics of ground infrared thermal radiation targets, while the laser target 420 is a laser diffuse reflection target used to simulate laser / infrared ground moving targets. It serves as a cooperative target for equipment such as laser target designators, laser seekers, and imaging seekers. By combining the laser target 420 and the infrared target 430 into one, it can realistically simulate a cooperative target for optoelectronic countermeasure training, and has multiple functions.

[0042] In one specific embodiment, the laser target 420 is used for diffuse reflection of 1.06μm and 10.6μm laser beams, serving as a cooperative target for equipment such as laser target designators and laser seekers. The overall dimensions of the laser target 420 are 1562mm × 1522mm, with an effective reflection area of ​​1500mm × 1500mm.

[0043] The laser target 420 in this embodiment specifically includes a target plate, a diffuse reflection layer sprayed onto the reflective surface of the target plate, and a support frame disposed on the back of the target plate. The target plate is specifically made of rust-resistant aluminum or stainless steel, meeting the temperature and humidity requirements of the environment in which it is used. The surface of the rust-resistant aluminum or stainless steel undergoes anodizing treatment and spraying protection, providing strong moisture resistance, rust resistance, and radiation resistance. The laser target 420 is mainly used for laser spot measurement and needs to withstand direct irradiation by the laser beam. Therefore, the diffuse reflection layer must have a certain degree of resistance to laser irradiation. Since any coating material has absorption characteristics, the substrate and spraying material of the diffuse reflection target surface must have good thermal conductivity to ensure that the absorbed heat is quickly conducted away, preventing excessive temperature rise that could damage the diffuse reflection material and affect its diffuse reflection characteristics. The support frame improves the rigidity and strength of the laser target 420 and prevents the target plate from deforming.

[0044] In one specific embodiment, refer to Figure 3 , Figure 4 and Figure 5 The infrared target 430 includes an outer frame 431, a target element support 432 located inside the front of the outer frame 431, and a back plate 433 located inside the back of the outer frame 431. The target element support 432 is provided with multiple partitions, and each partition is equipped with an independently temperature-controlled target element 434.

[0045] Specifically, the infrared target surface is 1.5m×1.5m in size and consists of 10×10 target elements 434. The 100 target elements 434 can be independently temperature controlled. Each target element 434 is 150mm×150mm in size and adopts an independent temperature control system design.

[0046] Each target element 434 specifically includes a housing with an opening on the front and, from the inside out, a heat insulation layer, a heat reflection layer, a heating layer, a thermally conductive silicon pad layer, a heat insulation layer, and an outer coating layer arranged sequentially inside the housing. A temperature sensor is provided on the outside of the heat insulation layer. Each target element 434 has a power of 62W. The temperature sensor uses a packaged high-precision digital temperature sensor manufactured by ADI (Analog Devices, Inc.). The heat insulation layer is made of 2mm thick aluminum plate, the heating layer is made of resistance heater, and the heat insulation layer is made of 20mm thick polystyrene plate.

[0047] The temperature control algorithm employs a predictive PID control algorithm. The temperature control unit is a heating module consisting of an electric heater and an insulation layer. When the resistance heater is energized, it uniformly heats the insulation layer 646. The temperature sensor directly measures the temperature of the insulation layer. The detection unit uses dual-channel simultaneous detection of analog and digital signals. The voltage signal generated by the analog detection is conditioned by a circuit and sampled by the control computer to generate a digital signal, which needs to be calibrated to correspond to the standard temperature. The infrared target 430 has functions such as ambient temperature detection; full target surface operation and pattern setting; users can customize the thermal pattern of the infrared target plate through the display and control computer; and unselected target elements 434 are not activated. The system mainly aims to maintain the thermal equilibrium of the target elements 434 at a certain set temperature, which requires that the power of the thermal energy input to the system from each target element 434 be equal to the power dissipated by the external environment.

[0048] In this embodiment, refer to Figure 7 Each target element 434 has a circuit board 435 on its back side. Multiple first connecting posts 4341 are provided on the back side of the target element 434. The circuit board 435 is fixed to the first connecting posts 4341 with screws and is electrically connected to the target element 434 through the first connecting posts 4341. Multiple second connecting posts 4351 are provided on the back side of the circuit board 435. A conductive sheet is provided on the inner side of a back plate 433. The back plate 433 is fixed to the second connecting posts 4351 with screws, and each circuit board 435 is electrically connected to the conductive sheet through the second connecting posts 4351. This structure enables the fixed connection between the target element 434 and the circuit board 435, as well as the circuit connection between the target element 434 and the circuit board 435, and also enables the fixed connection between the circuit board 435 and the back plate 433, and the circuit connection between the conductive sheet and the circuit board 435. Assembly is simple and convenient.

[0049] In some embodiments, refer to Figure 5 The first drive mechanism 330 includes a first motor 331 fixed inside the base 310, a first worm gear 332 installed at the output end of the first motor 331, and a first worm wheel 333 coaxially fixed to the lower end of the vertical rotating shaft 321 and meshing with the first worm gear 332. The first drive mechanism 330 adopts a worm gear structure, which can not only meet the requirements of driving the rotating frame 320 to adjust its rotation direction, but also lock the position of the rotating frame 320 by utilizing the self-locking function of the worm gear.

[0050] In some embodiments, refer to Figure 5 and Figure 6The upper ends of the two columns 322 are respectively provided with a drive housing 324 and a limiting housing 325. Two horizontal rotating shafts 323 are respectively mounted on the drive housing 324 and the limiting housing 325. The second drive mechanism 340 is located inside the drive housing 324. A mechanical limiting mechanism 350 is provided inside the limiting housing 325. The mechanical limiting mechanism 350 includes two sets of limiting members 351 and a fixing sleeve 352. The two sets of limiting members 351 are symmetrically arranged on the lower side of both sides of the horizontal rotating shafts 323. The limiting member 351 includes a support column 3511 and a limiting sliding sleeve 351. 2 and buffer spring 3513, the lower end of support column 3511 is fixed to the lower side of limiting housing 325, support platform 3514 is provided on the outer periphery of support column 3511, limiting sleeve 3512 is slidably sleeved on the upper end of support column 3511, buffer spring 3513 is sleeved on support column 3511 and supported between support platform 3514 and limiting sleeve 3512, fixing sleeve 352 is fixed on horizontal rotating shaft 323, and a limiting protrusion 3521 is provided on the outer wall of fixing sleeve 352, which can respectively abut against the upper side of limiting sleeve 3512 on both sides.

[0051] When the target 400 rotates around the horizontal shaft 323, it will drive the fixed sleeve 352 fixed at one end of the horizontal shaft 323 to rotate. When the angle of rotation of the horizontal shaft 323 exceeds a certain range, the limiting protrusion 3521 on the fixed sleeve 352 collides with the limiting slide sleeve 3512 on the limiting member 351. The limiting slide sleeve 3512 slides down along the support column 3511 and compresses the buffer spring 3513. During the downward movement of the limiting slide sleeve 3512, the rotation of the target 400 can be buffered, so that the rotation speed of the target 400 gradually decreases. When the buffer spring 3513 is compressed to the limit, the pitch angle of the target 400 can be limited. This application adds a mechanical limiting mechanism 350 to ensure that the limiting of the pitch angle of the target plate rotation is safer and more reliable.

[0052] It should be noted that, in addition to mechanical limit switches, this embodiment also includes electronically controlled limit switches. Electronically controlled limit switches are used first, and mechanical limit switches are used when electronically controlled limit switches fail.

[0053] In this embodiment, the second drive mechanism 340 includes a second motor 341 fixed inside the drive housing 324, a second worm gear 342 installed at the output end of the second motor 341, and a second worm wheel 343 coaxially fixed to the side end of the horizontal rotating shaft 323 and meshing with the second worm gear 342. The second drive mechanism 340 adopts a worm gear structure, which not only meets the requirement of driving the horizontal rotating shaft 323 to rotate to adjust the pitch angle of the target 400, but also utilizes the self-locking function of the worm gear to lock the pitch angle of the target 400.

[0054] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be covered within the scope of the claims and specification of the present invention.

Claims

1. A combined photoelectric target system, characterized in that: Includes vehicle-mounted cabin, lifting platform, servo turntable, and target; The upper part of the vehicle compartment is provided with a storage slot, and each of the four corners at the bottom of the storage slot is provided with an upwardly extending guide post. A support slider is slidably installed on the guide post, and a support spring is also sleeved on the guide post to support the lower side of the support slider. The lifting platform is located at the center of the bottom of the storage slot; The servo turntable includes a base, a rotating frame, a first drive mechanism, and a second drive mechanism. The base is fixed on the lifting platform. The bottom of the rotating frame is rotatably mounted on the base via a vertical rotating shaft. The first drive mechanism is used to drive the vertical rotating shaft to rotate. The left and right sides of the rotating frame are provided with upwardly extending columns. A horizontal rotating shaft is coaxially arranged on the relatively inner sides of the two columns. The second drive mechanism is used to drive the horizontal rotating shaft to rotate. The target is fixed between two horizontal rotating shafts. The four corners of the target are provided with guide sleeves that are adapted to each of the guide posts. When the target is flat, each guide sleeve is aligned with each guide post. Each of the supporting sliders is connected to a rack extending upward and fitting into a vertical guide groove on the side wall of the storage slot. The top of the vehicle compartment is rotatably mounted on both sides of the storage slot. Each of the rotating shafts is fixedly connected to a rotating cover plate and two gears that mesh with the two racks on the corresponding sides. When the lifting platform lowers the flat target into the storage slot, the rotating cover plates on both sides rotate towards the middle and close to the upper side of the storage slot.

2. The combined photoelectric target system according to claim 1, characterized in that: Each of the aforementioned support sliders has a rubber pad on its upper side.

3. The combined photoelectric target system according to claim 1, characterized in that: A guide groove is vertically arranged at the center of the storage slot. The lifting platform is adapted to the guide groove. A telescopic column is provided at the bottom of the guide groove. A telescopic column receiving slot is provided at the bottom of the lifting platform. The upper end of the telescopic column is fixed to the top of the telescopic column receiving slot.

4. The combined photoelectric target system according to claim 1, characterized in that: The target includes a laser target and an infrared target, which are arranged opposite each other with a gap between them. The left and right sides of the laser target and the infrared target are connected by connecting plates, and the connecting plates on both sides of the target are fixedly connected to the horizontal rotating shafts on both sides.

5. The combined photoelectric target system according to claim 4, characterized in that: The infrared target includes an outer frame, a target element support member located inside the front of the outer frame, and a back plate located inside the back of the outer frame. The target element support member is provided with multiple partitions, and each partition is equipped with an independently temperature-controlled target element.

6. The combined photoelectric target system according to claim 5, characterized in that: Each target element has a circuit board on its back side. Multiple first connecting posts are provided on the back side of the target element. The circuit board is fixed to the first connecting posts by screws and is electrically connected to the target element through the first connecting posts. Multiple second connecting posts are provided on the back side of the circuit board. A conductive sheet is provided on the inner side of the back plate. The back plate is fixed to the second connecting posts by screws, and each circuit board is electrically connected to the conductive sheet through the second connecting posts.

7. The combined photoelectric target system according to claim 1, characterized in that: The first drive mechanism includes a first motor fixed inside the base, a first worm gear installed at the output end of the first motor, and a first worm wheel coaxially fixed to the lower end of the vertical shaft and meshing with the first worm gear.

8. The combined photoelectric target system according to claim 1, characterized in that: The upper ends of the two columns are respectively provided with a drive housing and a limiting housing. The two horizontal rotating shafts are respectively mounted on the drive housing and the limiting housing. The second drive mechanism is located inside the drive housing. The limiting housing is provided with a mechanical limiting mechanism, which includes two sets of limiting members and a fixing sleeve. The two sets of limiting members are symmetrically arranged on the lower sides of both sides of the horizontal rotating shaft. The limiting member includes a support column, a limiting sleeve, and a buffer spring. The lower end of the support column is fixed to the lower side of the limiting housing. A support platform is provided on the outer periphery of the support column. The limiting sleeve is slidably sleeved on the upper end of the support column. The buffer spring is sleeved on the support column and supported between the support platform and the limiting sleeve. The fixing sleeve is fixed on the horizontal rotating shaft. The outer wall of the fixing sleeve is provided with a limiting protrusion that can abut against the upper side of the limiting sleeve on both sides.

9. The combined photoelectric target system according to claim 8, characterized in that: The second drive mechanism includes a second motor fixed inside the drive housing, a second worm gear installed at the output end of the second motor, and a second worm wheel coaxially fixed to the side end of the horizontal rotating shaft and meshing with the second worm gear.

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