An infrared detection device for aircraft maintenance

Abstract

An infrared detection device for aircraft maintenance belongs to the field of infrared thermal imaging technology. It includes a bracket, a display unit and a holding unit are installed at the lower end of the bracket, and a detection unit is provided at the upper end of the bracket. The bracket can support the detection unit as needed, so that inspection operations can be carried out directly in a placed state. When the detection unit is not in use, the bracket can protect the detection unit to prevent damage to the detection unit due to falling or the like. During inspection, the display unit is used to display infrared images, and the posture of the display screen, a key component of the display unit, can be adjusted according to actual needs. In addition, the display screen can also be effectively protected. During inspection, the operator can hold the holding unit to facilitate flexible implementation of the inspection operation, and when holding, the holding unit is bound to the operator's forearm, thereby reducing the risk of damage to the infrared detection device.

Description

Technical Field

[0001] The invention relates to the technical field of infrared thermal imaging, and in particular to an infrared detection device for aircraft maintenance. Background Art

[0002] Infrared thermal imaging technology is a technology that detects the infrared radiation of a target object by measuring the temperature of the object's surface. Objects emit infrared light when they are above absolute zero, and infrared thermal imaging absorbs the infrared light radiated by the object, then digitizes the infrared light obtained, and converts the invisible infrared radiation into a recognizable temperature image through data processing.

[0003] According to Liu Guangping et al. in the public document "Application of Infrared Thermal Imaging in Aviation Maintenance", infrared thermal imaging technology can be used to inspect composite material defects, engine turbine blades, oil pipeline or aircraft fuselage air tightness, line inspection, etc.

[0004] At present, in specific applications, handheld infrared detectors or placed infrared detectors are often used. Since the infrared cameras of both handheld infrared detectors and placed infrared detectors are exposed to the outside of the shell, it is easy to damage the infrared cameras during use or transfer. In addition, the handheld infrared detector adopts a method of manually adjusting its position to achieve the purpose of overall detection. Although this method can improve the flexibility during detection, it also reduces the spatial range that can be inspected, and the inspection efficiency is also low. The imaging display screen on the handheld infrared detector is fixed, which brings many inconveniences to the operation during specific applications. During the operation, since the handheld infrared detector needs to be held by the operator for a long time when checking, as the holding time increases, the operator's hands are prone to shaking, and the shaking will affect the imaging effect, and as the holding time increases, the risk of the infrared detector falling is also increased. Summary of the invention

[0005] The present invention provides an infrared detection device for aircraft maintenance to solve the deficiencies of the above-mentioned prior art, can effectively protect the infrared camera, can adjust the display posture according to needs, reduce the risk of falling, and improve the flexibility and efficiency during inspection.

[0006] In order to achieve the purpose of the present invention, the following technologies are proposed:

[0007] An infrared detection device for aircraft maintenance includes a bracket, a display unit and a holding unit are installed at the lower end of the bracket, and a detection unit is provided at the upper end of the bracket. The bracket can support the detection unit as needed, so that inspection operations can be directly carried out in a placed state. When the detection unit is not in use, the bracket can protect the detection unit to prevent damage to the detection unit due to falling or the like. During inspection, the display unit is used to display infrared images, and the posture of the display screen, a key component of the display unit, can be adjusted according to actual needs. In addition, the display screen can also be effectively protected. During inspection, the operator can hold the holding unit to facilitate flexible implementation of the inspection operation, and when holding, the holding unit is bound to the operator's forearm, thereby reducing the risk of damage to the infrared detection device.

[0008] The bracket includes a mounting plate, a plurality of sleeves are provided on the lower side of the mounting plate, a bottom plate is provided at the lower end of the sleeve, a connecting screw is passed through the sleeve, the upper end of the connecting screw extends out of the mounting plate, the lower end of the connecting screw extends out of the bottom plate, and first nuts are respectively provided at the upper and lower ends of the connecting screw, the first nut at the upper end acts on the upper wall of the mounting plate, and the first nut at the lower end acts on the bottom plate.

[0009] The detection unit includes a first mounting plate mounted on a mounting plate, an outer cover is mounted on the first mounting plate, an end ring is mounted on the upper end of the outer cover, a telescopic mechanism is arranged in the outer cover, a first disc is mounted on the upper end of the telescopic mechanism, a first housing is mounted on the upper end of the first disc, the lower end of the first housing is open, the upper end of the first housing is closed, a motor is mounted on the upper end of the first housing, the output shaft of the motor is connected to a driving gear, a driven gear is meshed on the driving gear, a rotating tube is coaxially arranged on the driven gear, the rotating tube is rotatably arranged on the upper end of the first housing, a second disc is mounted on the upper end of the rotating tube, a second housing is mounted on the upper end of the second disc, a third housing is mounted on the upper end of the second housing, an end cap is mounted on the upper end of the third housing, a plurality of inner extension tubes are arranged on the inner wall of the third housing, and an infrared camera is mounted on the inner side end of the inner extension tube. The telescopic mechanism can adjust the height of the infrared camera in the third housing, thereby expanding the detectable range of the infrared camera, and during detection, the infrared camera can also be driven to rotate by the motor, thereby further improving the flexibility and efficiency of infrared scanning. The infrared camera is equipped with an existing anti-shake system to improve the imaging effect. At the same time, by setting up multiple infrared cameras, infrared detection and scanning operations in different directions can be realized at a smaller angle, and the efficiency of inspection can be significantly improved. At the same time, when not in use, the infrared camera will be hidden inside the outer cover driven by the telescopic mechanism to avoid damage caused by falling or impact, thereby effectively protecting the equipment.

[0010] Further, a threaded sleeve is connected to the upper or lower end of the connecting screw, and a hexagonal rotating head is provided at the other end of the threaded sleeve, and a first screw rod is provided on the hexagonal rotating head, and a thread sleeve is provided at the other end of the first screw rod, and an anti-slip ring is provided on the outer periphery of the thread sleeve. When adjusting, the thread sleeve can be conveniently held by the anti-slip ring. A second screw rod is provided at the other end of the thread sleeve, and a second nut is provided at the lower end of the second screw rod, and an upper plate is provided at the lower end of the second screw rod, and the upper plate is located at the lower end of the second nut. An adjustment cap is provided at the lower end of the second screw rod, and the adjustment cap is located at the lower side of the upper plate. When the device is placed to perform inspection operations, the balance and placement stability of the device can be adjusted by the adjustment cap to improve the imaging effect. The arrangement of the first screw rod, the thread sleeve and the second screw rod can adjust the height of the detection part according to the needs of the inspection, thereby facilitating the inspection operation in the placed state. When the device is not in use, the outer cover can also be protected.

[0011] Furthermore, the telescopic mechanism includes a telescopic motor installed on a first mounting plate, the output shaft of the telescopic motor is connected to a telescopic screw rod, the lower end of the telescopic screw rod is provided with a bearing seat, the bearing seat is installed on the lower end of the outer cover through a pair of mounting frames, the telescopic screw rod is provided with a lifting plate, a first inner tube is installed on the lifting plate, the first inner tube is located inside the outer cover, a plurality of first waist-shaped holes are opened at the upper end of the first inner tube, a plurality of first guide rails are installed on the inner wall of the outer cover, a first guide sleeve is provided on the inner side of the first guide rail, the first guide sleeve is installed on the outer periphery of the first inner tube, a plurality of first racks are installed on the inner wall of the outer cover, a first gear is meshed on the first rack, the first gear is located in the first waist-shaped hole, first inner seats are provided at both ends of the first gear, and the first inner seat is installed on the inner wall of the first inner tube.

[0012] A second rack is meshed with the inner side of the first gear, a second inner tube is installed on the inner wall of the second rack, the second inner tube is located inside the first inner tube, a second guide sleeve is installed on the second inner tube, a second guide rail is sleeved on the outer side of the second guide sleeve, the second guide rail is installed on the inner wall of the first inner tube, a plurality of second waist-shaped holes are opened at the upper end of the second inner tube, a second gear is rotatably arranged in the second waist-shaped holes, second inner seats are provided at both ends of the second gear, the second inner seat is installed on the outer wall of the second inner tube, a third rack is meshed with the outer side of the second gear, and the third rack is installed on the inner wall of the first inner tube.

[0013] A fourth rack is meshed on the inner side of the second gear, a third inner tube is installed on the inner side of the fourth rack, the third inner tube is located inside the second inner tube, a plurality of third guide rails are installed on the inner wall of the second inner tube, a third guide sleeve is provided on the inner side of the third guide rail, the third guide sleeve is installed on the outer wall of the third inner tube, a second mounting disk is provided on the upper end of the third inner tube, and the first disc is installed on the second mounting disk.

[0014] The telescopic mechanism first realizes the telescopic action by rotating the telescopic screw, and the telescopic screw driving method has high precision and is convenient for automatic high-precision control through stepper motors and absolute encoder rings. In the process of telescopic, it is adjusted by multiple sets of gear rack transmission. First, this method expands the range of telescopic adjustment, and second, it has significant reliability after adjustment to improve the imaging effect.

[0015] Furthermore, a pair of mounting arc plates are provided at the lower end of the first inner tube, and a pair of limiting arc plates are provided on the lifting plate. The limiting arc plates are located between the mounting arc plates to limit the rotation of the lifting plate and the first inner tube, thereby improving reliability during telescopic movement.

[0016] The movable end plate is located in the concave plate, and the movable end plate is located at the inner side of the limit plate; the movable end plate is rotatably provided with a rotating rod, and the inner side end of the rotating rod is provided with an inner block, which is located in the concave plate; an inner cross plate is installed on the inner block, and limiting side plates are provided on the upper and lower sides of the inner cross plate; a guide hole is opened on the limiting side plate, and a movable through rod is movably provided on the guide hole; a pair of limiting nuts are respectively provided at both ends of the movable through rod, and an L-shaped plate is provided at the outer end of the movable through rod, the limiting nut located on the outer side is located on the outer side of the L-shaped plate, and the limiting nut located on the inner side is located on the inner side of the limiting side plate; a display screen is installed on the L-shaped plate, and the display screen is located in the concave plate, and the front of the display screen can be protected by the concave plate to avoid damage to the display screen when it falls. When the display screen is pulled outward, it can be pulled out in two stages. When the limit pin moves from one end of the long hole to the other end, the display screen moves out of the concave plate, and when the movable through rod moves from one end of the guide hole to the other end, the display screen will be further pulled out within the range of the first pull-out distance, so that the operator can operate the buttons on the display. At the same time, for easy operation, the display screen can also rotate around the rotating rod.

[0017] Furthermore, a concave handle is installed at the outer end of the display screen to facilitate pulling the display screen out of the concave plate.

[0018] Furthermore, a fixed handle is provided at the outer end of the rotating rod, a tightening ring is connected to the outer end of the rotating rod through a thread, a rotating handle is provided on the outer periphery of the tightening ring, an angle exists between the length direction of the rotating handle and the fixed handle, and the inner wall of the tightening ring acts on the outer end of the movable end plate to lock the rotation angle of the display screen. When locking, the locking operation can be achieved by reducing the angle between the fixed handle and the rotating handle.

[0019] Furthermore, from the above description, it can be known that when the display screen is located in the concave plate, due to the lack of necessary limiters, the display screen can easily move outward, and thus can easily cause damage to the display screen. In order to avoid the existence of this problem, a pair of guide nails are installed on the inner horizontal plate, and a movable arm is movably provided on the guide nail. A concave handle is provided at the outer end of the movable arm, and a pair of guide horizontal holes are opened on the movable arm. The guide nails pass through the guide horizontal holes, and a movable inner plate is installed on the inner end of the movable arm. A first shaft rod is rotatably provided at one end of the movable inner plate, and a second shaft rod is rotatably provided at the other end of the movable inner plate. A plurality of spring pins are installed on the inner horizontal plate, the outer end of the spring pin is sleeved with a first spring, the inner end of the first spring is provided with an inner pressure plate, the spring pin is passed through the inner pressure plate, a pair of inwardly extending convex plates are provided on the inner pressure plate, the inner end of the inwardly extending convex plates is open, and a U-shaped bayonet is provided at the inner end of the inwardly extending convex plates, the inner end of the movable through rod is clamped in the U-shaped bayonet, a first concave piece is installed on the outer wall of the inner pressure plate, first transverse holes are provided at the inner ends of both sides of the first concave piece, a first inclined hole is provided at the outer end of the first transverse hole, the outer end of the first inclined hole extends inwardly, and the first shaft rod moves in the first transverse hole and the first inclined hole. A pair of outward-extending sleeve rods are installed on the movable end plate, and an end cap is provided at the outer end of the outward-extending sleeve rod, and a second spring is provided on the inner side of the end cap. The second spring is sleeved on the outward-extending sleeve rod, and an inner-pressure concave plate is provided at the inner end of the second spring. The outward-extending sleeve rod is passed through the inner-pressure concave plate, and U-shaped grooves are provided at both ends of the inner-pressure concave plate. A second concave piece is installed on the outer wall of the inner-pressure concave plate, and second inclined holes are provided at the outer ends of both sides of the second concave piece. The outer end of the second inclined hole extends outwardly, and a second transverse hole is provided at the outer end of the second inclined hole. The second shaft rod moves in the second inclined hole and the second transverse hole. An end convex plate is provided at one end of the limit plate, and a positioning rod is provided on the end convex plate. The inner end of the positioning rod is passed through the U-shaped groove. Among them, the positioning rod is clamped in the U-shaped groove to lock the position of the movable end plate to prevent the movable end plate from uncontrollably moving outward. The movable through rod is clamped in the U-shaped bayonet to lock the position of the L-shaped plate to prevent the display screen from moving outward. The first and second shafts that are movably arranged, when they move, can first move the inner pressure concave plate outward to cancel the lock on the movable end plate, and then the display screen can be pulled out in one stage, and because the first shaft is located at the end of the second inclined hole at this time, and the second shaft has not yet entered the first inclined hole, the inner protruding plate will not move outward at this time, and the display screen will not move relative to the inner horizontal plate under the pull of external force. If a second-stage pull-out is required, the first shaft and the second shaft can be pulled continuously, so that the first shaft moves in the first inclined hole, and when the second shaft moves in the second horizontal hole, the inner pressure concave plate will always be in a state of moving outward. At this time, the inner protruding plate is in a state of moving outward, so that the movable through rod is finally moved out of the U-shaped bayonet, and then the display screen can continue to be pulled outward.

[0020] Furthermore, the holding part is installed on the base plate, and the holding part includes a concave shell installed on the lower wall of the base plate, the inner side of the concave shell is open, and a pair of telescopic pins are passed through the concave shell, and the inner end of the telescopic pin is provided with an inner top vertical plate, and the upper end of the inner top vertical plate is provided with a T-shaped plate, and a limit sleeve is sleeved on the T-shaped plate, and the limit sleeve is installed on the base plate, and a pair of rotating plates are hinged at the outer end of the T-shaped plate, and a rotating shaft is rotatably provided at the other end of the rotating plate, and the rotating shaft is arranged on the base plate, and a third gear is installed at the other end of the rotating plate, and a fifth rack is meshed on the third gear, and a constraint side plate is provided on the outer side of the fifth rack, and a pair of constraint horizontal holes are respectively opened at both ends of the constraint side plate, and constraint nails are passed through the constraint horizontal holes, and the inner end of the constraint nail is installed on the fifth rack, and a movable vertical plate is installed at the outer end of the constraint nail, and a protective cover is provided on the movable vertical plate, and a buffer pad is provided on the inner wall of the protective cover. When infrared detection is performed in a holding manner, the device can be lifted by holding the concave shell, and the inner top vertical plate is pressed inward during the holding process, so that the T-shaped plate drives the rotating plate and the third gear to rotate. The rotation of the third gear will drive the fifth rack to move. When it moves, the cover can be closed, so that the cover is bound to the operator's forearm, so as to improve the stability of the device when held and used, and at the same time prevent the device from falling and causing damage to the device.

[0021] Furthermore, a pair of guide screws are installed at the lower end of the inner top vertical plate, and a movable plug plate is sleeved on the guide screws. A pair of vertical guide holes are opened at the lower end of the movable plug plate, and the guide screws are inserted into the vertical guide holes. A toggle convex plate is provided at the upper end of the movable plug plate, and a toggle groove is opened on the toggle convex plate. A baffle rod is provided on the inner side of the lower end of the concave shell, and a third spring is sleeved on the telescopic pin. The third spring is located between the inner top vertical plate and the concave shell. In order to facilitate the automatic opening of the guard sleeve when the grip is cancelled, the third spring is provided, and the movable plug plate can be moved downward by the provided baffle rod and the movable plug plate to lock the position of the inner top vertical plate, thereby reducing the force applied by the operator during grip, and can also ensure that the guard sleeve is always sleeved on the forearm when in use, thereby improving safety.

[0022] The advantages of the above technical solution are:

[0023] The present invention can protect fragile parts such as infrared cameras and display screens to avoid damage to the equipment. Infrared detection operations can be performed by holding or placing the device as needed. The infrared camera can be rotated and moved to expand the detectable range. The display screen can be adjusted in posture and position as needed to improve flexibility during operation. When holding, auxiliary positioning is used to improve safety during detection and also improve imaging effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to make the objectives, technical solutions and advantages of the present invention more clear, the present invention will be further described in detail below with reference to the accompanying drawings.

[0025] Figure 1 The figure shows a three-dimensional structural diagram of the infrared detection device for aircraft maintenance when not in use.

[0026] Figure 2 The invention shows a three-dimensional structural diagram of the infrared detection device for aircraft maintenance when it is placed in a use state.

[0027] Figure 3 The invention shows a three-dimensional structural diagram of the infrared detection device for aircraft maintenance when it is held in use.

[0028] Figure 4 A three-dimensional structural diagram of the bracket is shown.

[0029] Figure 5 A three-dimensional structural diagram of the holding portion is shown.

[0030] Figure 6 A three-dimensional structural diagram of a display unit is shown.

[0031] Figure 7 A diagram showing a portion of the structure of the display unit.

[0032] Figure 8 A detailed illustration showing a portion of the structure of the display unit.

[0033] Fig. 9 A three-dimensional structural diagram of the detection unit is shown.

[0034] Fig.10 A first three-dimensional structural diagram of the detection unit is shown.

[0035] Fig.11 A second three-dimensional structural diagram of the detection unit is shown.

[0036] Fig.12 A third three-dimensional structural diagram of the detection unit is shown.

[0037] Description of reference numerals:

[0038] Bracket 1, holding part 2, display part 3, detection part 4, mounting plate 100, sleeve 101, bottom plate 102, connecting screw 103, first nut 104, screw sleeve 105, hexagonal rotating head 106, first screw rod 107, screw sleeve 108, anti-slip ring 109, second screw rod 110, second nut 113, upper plate 111, adjustment cap 112, concave shell 200, stop rod 201, telescopic pin 202, third spring 203, inner top vertical plate 204, T-shaped plate 205, limit sleeve 206, guide screw 207, movable plug plate 208, vertical guide hole 209, toggle convex plate 210, toggle groove 211, rotating plate 212, rotating shaft 213, third gear 2 14, fifth rack 215, restraining side plate 216, restraining transverse hole 217, restraining pin 218, movable vertical plate 219, sheath 220, concave plate 300, limiting plate 301, long hole 302, end convex plate 303, positioning rod 304, limiting pin 305, movable end plate 306, rotating rod 307, fixed handle 308, top tightening ring 309, rotating handle 310, inner block 311, inner transverse plate 312, limiting side plate 313, guide hole 314, movable through rod 315, L-shaped plate 316, display screen 317, concave handle 318, guide pin 319, movable arm 320, guide transverse hole 321, concave handle 322, movable inner plate 324, first axis Rod 325, second shaft rod 326, spring pin 327, first spring 328, inner pressure plate 329, inner protruding convex plate 330, U-shaped bayonet 331, first concave part 332, first oblique hole 333, first transverse hole 334, outer protruding sleeve rod 335, end cap 336, second spring 337, inner pressure concave plate 338, U-shaped groove 340, second concave part 342, second transverse hole 343, second oblique hole 344, first mounting plate 400, outer cover 401, end ring 402, mounting frame 403, telescopic motor 404, telescopic screw rod 405, lifting plate 406, limiting arc plate 407, first inner tube 408, first waist-shaped hole 409, mounting arc plate 410, first guide rail 411 , first guide sleeve 412, first rack 413, first gear 414, first inner seat 415, second rack 416, second inner tube 417, second guide sleeve 418, second guide rail 419, second inner seat 420, second gear 421, third rack 422, fourth rack 423, third inner tube 424, third guide sleeve 425, third guide rail 426, second mounting plate 427, first disc 428, first outer shell 429, second disc 430, second outer shell 431, third outer shell 432, end cover 433, motor 434, driving gear 435, driven gear 436, rotating tube 437, inner extension tube 438, infrared camera 439, bearing seat 440. DETAILED DESCRIPTION

[0039] Reference Figures 1 to 3As shown, an infrared detection device for aircraft maintenance includes a bracket 1, a display unit 3 and a holding unit 2 are installed at the lower end of the bracket 1, and a detection unit 4 is provided at the upper end of the bracket 1. Figure 1 This is a structural diagram of the infrared detection device for aircraft maintenance when not in use. It can be seen from the figure that the bracket plays a protective role for the entire device and can prevent damage to the core components such as the detection unit 4 when it falls. Figure 2 This is a structural diagram of an infrared detection device for aircraft maintenance in a placed state. In this state, the bracket 1 supports the detection unit 4 and the like. Figure 3 This is a structural diagram of the infrared detection device for aircraft maintenance in a gripping state. In this state, the upper half of the bracket 1 is removed, and the operator can perform detection operations by gripping the gripping part 2.

[0040] Refer to Figure 4 As shown, the bracket 1 includes a mounting plate 100, a plurality of sleeves 101 are provided on the lower side of the mounting plate 100, a bottom plate 102 is provided at the lower end of the sleeve 101, a connecting screw 103 is passed through the sleeve 101, the upper end of the connecting screw 103 extends out of the mounting plate 100, and the lower end of the connecting screw 103 extends out of the bottom plate 102, and first nuts 104 are respectively provided at the upper and lower ends of the connecting screw 103, the first nut 104 at the upper end acts on the upper wall of the mounting plate 100, and the first nut 104 at the lower end acts on the bottom plate 102. A threaded sleeve 105 is connected to the upper or lower end of the connecting screw 103, and a hexagonal rotating head 106 is rotatably provided at the other end of the threaded sleeve 105. A first screw rod 107 is provided on the hexagonal rotating head 106, and a thread sleeve 108 is provided at the other end of the first screw rod 107. An anti-slip ring 109 is provided on the outer periphery of the thread sleeve 108, and a second screw rod 110 is provided at the other end of the thread sleeve 108. A second nut 113 is provided at the lower end of the second screw rod 110, and an upper plate 111 is provided at the lower end of the second screw rod 110. The upper plate 111 is located at the lower end of the second nut 113, and an adjusting cap 112 is provided at the lower end of the second screw rod 110, and the adjusting cap 112 is located on the lower side of the upper plate 111.

[0041] Specifically, the gripping portion 2 is mounted on the bottom plate 102, and Figure 5The gripping portion 2 comprises a concave shell 200 mounted on the lower wall of the bottom plate 102, the inner side of the concave shell 200 is open, a pair of telescopic pins 202 are penetrated on the concave shell 200, an inner top vertical plate 204 is provided at the inner side end of the telescopic pin 202, a T-shaped plate 205 is provided at the upper end of the inner top vertical plate 204, a limiting sleeve 206 is sleeved on the T-shaped plate 205, and the limiting sleeve 206 is mounted on the bottom plate 102, a pair of rotating plates 212 are hinged at the outer side end of the T-shaped plate 205, and a rotating shaft 213 is rotatably provided at the other end of the rotating plate 212, and the rotating shaft 213 is arranged on the bottom plate 1 02, a third gear 214 is installed on the other end of the rotating plate 212, and a fifth rack 215 is meshed on the third gear 214. A constraint side plate 216 is provided on the outer side of the fifth rack 215. A pair of constraint transverse holes 217 are respectively opened at both ends of the constraint side plate 216. Constraint pins 218 are inserted into the constraint transverse holes 217. The inner ends of the constraint pins 218 are installed on the fifth rack 215. A movable vertical plate 219 is installed on the outer end of the constraint pin 218. A sheath 220 is provided on the movable vertical plate 219, and a buffer pad is provided on the inner wall of the sheath 220. A pair of guide screws 207 are installed at the lower end of the inner top vertical plate 204, and a movable plug plate 208 is sleeved on the guide screw 207. A pair of vertical guide holes 209 are opened at the lower end of the movable plug plate 208. The guide screw 207 is penetrated into the vertical guide holes 209. A toggle convex plate 210 is provided at the upper end of the movable plug plate 208, and a toggle groove 211 is opened on the toggle convex plate 210. A blocking rod 201 is provided on the inner side of the lower end of the concave shell 200, and a third spring 203 is sleeved on the telescopic pin 202. The third spring 203 is located between the inner top vertical plate 204 and the concave shell 200.

[0042] Specifically, the display unit 3 is disposed between the mounting plate 100 and the bottom plate 102, and Figures 6 to 8As shown, the display part 3 includes a concave plate 300 installed between the mounting plate 100 and the bottom plate 102, a pair of limiting plates 301 are provided on the concave plate 300, a long hole 302 is opened on the limiting plate 301, a limiting nail 305 is movably provided in the long hole 302, a movable end plate 306 is provided at the inner end of the limiting nail 305, the movable end plate 306 is located in the concave plate 300, and the movable end plate 306 is located on the inner side of the limiting plate 301, a rotating rod 307 is rotatably provided on the movable end plate 306, an inner end of the rotating rod 307 is provided with an inner block 311, the inner block 311 is located in the concave plate 300, and a An inner transverse plate 312 is provided, and limiting side plates 313 are provided on the upper and lower sides of the inner transverse plate 312. A guide hole 314 is opened on the limiting side plate 313, and a movable through rod 315 is movably provided on the guide hole 314. A pair of limiting nuts are respectively provided at both ends of the movable through rod 315. An L-shaped plate 316 is provided at the outer end of the movable through rod 315. The limiting nut located on the outer side is located on the outer side of the L-shaped plate 316, and the limiting nut located on the inner side is located on the inner side of the limiting side plate 313. A display screen 317 is installed on the L-shaped plate 316, and a concave handle 318 is installed on the outer end of the display screen 317. The display screen 317 is located in the concave plate 300.

[0043] A fixed handle bar 308 is provided at the outer end of the rotating rod 307, and a tightening ring 309 is connected to the outer end of the rotating rod 307 through a thread. A rotating handle bar 310 is provided on the outer periphery of the tightening ring 309. There is an angle between the length direction of the rotating handle bar 310 and the fixed handle bar 308, and the inner wall of the tightening ring 309 acts on the outer end of the movable end plate 306.

[0044] A pair of guide pins 319 are installed on the inner horizontal plate 312, and a movable arm 320 is movably provided on the guide pin 319. A concave handle 322 is provided at the outer end of the movable arm 320. A pair of guide horizontal holes 321 are opened on the movable arm 320, and the guide pins 319 pass through the guide horizontal holes 321. A movable inner plate 324 is installed on the inner end of the movable arm 320, and a first shaft rod 325 is rotatably provided at one end of the movable inner plate 324, and a second shaft rod 326 is rotatably provided at the other end of the movable inner plate 324. A plurality of spring pins 327 are installed on the inner transverse plate 312, and a first spring 328 is sleeved on the outer end of the spring pin 327, and an inner pressure plate 329 is provided on the inner pressure plate 329. The spring pin 327 is passed through the inner pressure plate 329, and a pair of inwardly extending convex plates 330 are provided on the inner pressure plate 329. The inner ends of the inwardly extending convex plates 330 are open, and a U-shaped bayonet 331 is provided on the inner ends of the inwardly extending convex plates 330, and the inner ends of the inwardly extending convex plates 330 are clamped in the U-shaped bayonet 331. A first recess 332 is installed on the outer wall of the inner pressure plate 329, and first transverse holes 334 are provided on the inner ends of both sides of the first recess 332, and a first inclined hole 333 is provided on the outer end of the first transverse hole 334, and the outer end of the first inclined hole 333 extends inwardly obliquely, and the first shaft rod 325 moves in the first transverse hole 334 and the first inclined hole 333. A pair of outwardly extending sleeve rods 335 are installed on the movable end plate 306. The outer end of the outwardly extending sleeve rod 335 is provided with an end cap 336. The inner side of the end cap 336 is provided with a second spring 337. The second spring 337 is sleeved on the outwardly extending sleeve rod 335. The inner side end of the second spring 337 is provided with an inner pressure concave plate 338. The outwardly extending sleeve rod 335 is penetrated on the inner pressure concave plate 338. Both ends of the inner pressure concave plate 338 are provided with U-shaped grooves 340. The outer wall of the inner pressure concave plate 338 is provided with a second spring 337. The concave part 342, the outer ends of both sides of the second concave part 342 are provided with second inclined holes 344, the outer ends of the second inclined holes 344 extend outwardly, the outer ends of the second inclined holes 344 are provided with second transverse holes 343, the second shaft rod 326 moves in the second inclined holes 344 and the second transverse holes 343, one end of the limiting plate 301 is provided with an end convex plate 303, the end convex plate 303 is provided with a positioning rod 304, and the inner end of the positioning rod 304 is passed through the U-shaped groove 340.

[0045] Refer to Figures 9 to 12As shown, the detection unit 4 includes a first mounting plate 400 mounted on the mounting plate 100, an outer cover 401 is mounted on the first mounting plate 400, an end ring 402 is mounted on the upper end of the outer cover 401, a telescopic mechanism is arranged in the outer cover 401, a first disc 428 is mounted on the upper end of the telescopic mechanism, a first housing 429 is mounted on the upper end of the first disc 428, the lower end of the first housing 429 is open, the upper end of the first housing 429 is closed, a motor 434 is mounted on the upper end of the first housing 429, the output shaft of the motor 434 is connected to a driving gear 435, and the driving gear 435 is connected to the output shaft of the motor 434. A driven gear 436 is meshed with the moving gear 435, and a rotating tube 437 is coaxially provided on the driven gear 436. The rotating tube 437 is rotatably provided on the upper end of the first shell 429. A second disc 430 is installed on the upper end of the rotating tube 437, a second shell 431 is installed on the upper end of the second disc 430, a third shell 432 is installed on the upper end of the second shell 431, an end cover 433 is installed on the upper end of the third shell 432, and a plurality of inner extension tubes 438 are provided on the inner wall of the third shell 432, and an infrared camera 439 is installed on the inner end of the inner extension tube 438.

[0046] The telescopic mechanism includes a telescopic motor 404 installed on a first mounting plate 400, the output shaft of the telescopic motor 404 is connected to a telescopic screw rod 405, the lower end of the telescopic screw rod 405 is provided with a bearing seat 440, the bearing seat 440 is installed on the lower end of the outer cover 401 through a pair of mounting frames 403, a lifting plate 406 is provided on the telescopic screw rod 405, a first inner tube 408 is installed on the lifting plate 406, a pair of mounting arc plates 410 are provided at the lower end of the first inner tube 408, and a pair of limiting arc plates 407 are provided on the lifting plate 406, and the limiting arc plates 407 are located between the mounting arc plates 410. The first inner tube 408 is located inside the outer cover 401, and a plurality of first waist-shaped holes 409 are formed at the upper end of the first inner tube 408. A plurality of first guide rails 411 are installed on the inner wall of the outer cover 401, and a first guide sleeve 412 is sleeved on the inner side of the first guide rail 411, and the first guide sleeve 412 is installed on the outer periphery of the first inner tube 408. A plurality of first racks 413 are installed on the inner wall of the outer cover 401, and a first gear 414 is meshed on the first rack 413. The first gear 414 is located in the first waist-shaped holes 409, and first inner seats 415 are provided at both ends of the first gear 414, and the first inner seats 415 are installed on the inner wall of the first inner tube 408.

[0047] A second rack 416 is meshed on the inner side of the first gear 414, and a second inner tube 417 is installed on the inner wall of the second rack 416. The second inner tube 417 is located inside the first inner tube 408. A second guide sleeve 418 is installed on the second inner tube 417. A second guide rail 419 is sleeved on the outer side of the second guide sleeve 418. The second guide rail 419 is installed on the inner wall of the first inner tube 408. A plurality of second waist-shaped holes are opened at the upper end of the second inner tube 417. A second gear 421 is rotatably arranged in the second waist-shaped holes. Second inner seats 420 are provided at both ends of the second gear 421. The second inner seat 420 is installed on the outer wall of the second inner tube 417. A third rack 422 is meshed on the outer side of the second gear 421. The third rack 422 is installed on the inner wall of the first inner tube 408.

[0048] The inner side of the second gear 421 is meshed with a fourth rack 423, the inner side of the fourth rack 423 is installed with a third inner tube 424, the third inner tube 424 is located inside the second inner tube 417, a plurality of third guide rails 426 are installed on the inner wall of the second inner tube 417, the inner side of the third guide rail 426 is sleeved with a third guide sleeve 425, the third guide sleeve 425 is installed on the outer wall of the third inner tube 424, the upper end of the third inner tube 424 is provided with a second mounting plate 427, and the first disc 428 is installed on the second mounting plate 427.

[0049] In this embodiment, if the device is used in a placement manner, it is achieved by the following operations. The operator removes the threaded sleeve 105 from the upper end of the connecting screw 103. Then, the spacing between the first screw rod 107 and the second screw rod 110 is adjusted according to the actual detection height. During the adjustment, the thread sleeve 108 can be kept stationary by holding the anti-slip ring 109, and then the first screw rod 107 is rotated to move the first screw rod 107 outward, and ensure that the first screw rod 107 extends to an equal length, and then the thread sleeve 108 is rotated by the anti-slip ring 109 to make the thread sleeve 108 and the first screw rod 107 thereon away from the upper plate 111. After the adjustment is completed, the threaded sleeve 105 is screwed on the lower end of the connecting screw 103 one by one, and then the adjustment cap 112 is placed on the ground, and the balance of the upper plate 111 is adjusted by the adjustment cap 112, and then the detection operation is performed.

[0050] In this embodiment, if the detection part 4 is protected by the bracket 1, that is, Figure 1 In the state shown in , the threaded sleeve 105 can be connected to the upper end of the connecting screw 103.

[0051] In this embodiment, if the device is used by holding, the threaded sleeve 105 can be directly removed from the connecting screw 103, that is, the device is as shown in FIG. Figure 3Specifically, when holding, the operator holds the concave shell 200 with his hand, passes through the sheath 220, and places the thumb in the toggle slot 211, and then makes the inner top vertical plate 204 close to the concave shell 200 while the third spring 203 is compressed, and when the inner top vertical plate 204 moves, it will drive the rotating plate 212 to rotate, and the rotation of the rotating plate 212 will drive the third gear 214 to rotate, and the rotation of the third gear 214 will drive the fifth rack 215 and the sheath 220 thereon to approach each other, and finally make the sheath 220 sleeved on the operator's forearm, and then use the thumb to toggle the movable plug plate 208 downward so that the movable plug plate 208 is located on the inner side of the blocking rod 201, at this time, the operator holds the concave shell 200 for detection. After the detection is completed, the movable plug plate 208 is pushed upward so that the inner top vertical plate 204 can move outward under the action of the third spring 203, and then the sheath 220 will be opened, and then the operator will pull out his hand.

[0052] In this embodiment, whether the detection operation is performed in a placing manner or a holding manner, the following operation is required.

[0053] Step 1: Pull out the display screen 317. During the operation, the operator pulls Recessed handle 322 , and then the movable inner plate 324 moves. During the movement of the movable inner plate 324, the second shaft 326 moves in the second inclined hole 344, and the first shaft 325 moves in the first transverse hole 334. With the movement of the second shaft 326, the inner pressure concave plate 338 gradually moves outward, and the positioning rod 304 moves out of the U-shaped groove 340, and then the display screen 317 is pulled outward by the concave handle 318 to completely move the display screen 317 out of the concave plate 300. If the display screen 317 needs to extend a longer distance, the concave handle 322 can be continuously pulled outward to move the first shaft 325 from the first transverse hole 334 to the first inclined hole 333, and when the first shaft 325 moves, the inner extension convex plate 330 is separated from the movable penetrating rod 315, and then the display screen 317 is pulled to perform secondary extension. Then the operator rotates the display screen 317 as needed to tilt it. After completion, the tightening ring 309 can be tightened against the movable end plate 306 by reducing the angle between the rotating handle 310 and the fixed handle 308 .

[0054] Step 2, then perform detection operations or adjustment operations through the relevant adjustment buttons set on the display screen 317.

[0055] Step 3, before detection, the telescopic motor 404 needs to be started so that the telescopic motor 404 drives the telescopic screw rod 405 to rotate, and the rotation of the telescopic screw rod 405 will drive the lifting plate 406 to move upward, and the upward movement of the lifting plate 406 will drive the first inner tube 408 to move upward, and at the same time, the first gear 414 thereon also moves upward, and in the process of moving upward, the first gear 414 and the first rack 413 act to make the first gear 414 rotate counterclockwise, and the counterclockwise rotation of the first gear 414 will make the second rack 416 move upward, and the upward movement of the second rack 416 will drive the second inner tube 4 17 moves upward, the upward movement of the second inner tube 417 will drive the second gear 421 to move upward, and during the upward movement of the second gear 421, it will act on the third rack 422, thereby causing it to rotate counterclockwise, and the counterclockwise rotation of the second gear 421 will drive the fourth rack 423 to move upward, and the upward movement of the fourth rack 423 will cause the third inner tube 424 to move upward, and the upward movement of the third inner tube 424 will cause the infrared camera 439 to move upward and be exposed from the end ring 402, and the infrared camera 439 can be adjusted to a certain height as required.

[0056] Step 4, start the detection of the object. During the detection, start the motor 434. The driving gear 435 is driven by the motor 434 to rotate. The rotation of the driving gear 435 will drive the rotation of the driven gear 436. When the driven gear 436 rotates, the infrared camera 439 will rotate slowly. During the rotation, the infrared image is captured frame by frame to capture and save the image. In this way, the overall scanning and detection operation of the detected object can be completed by gradually raising the height of the infrared camera 439 during operation.

[0057] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. An infrared detection device for aircraft maintenance, characterized in that: It comprises a bracket (1), wherein the upper end of the bracket (1) is provided with a detection portion (4); The bracket (1) comprises a mounting plate (100), a plurality of sleeves (101) are provided on the lower side of the mounting plate (100), a bottom plate (102) is provided at the lower end of the sleeve (101), a connecting screw (103) is inserted into the sleeve (101), the upper end of the connecting screw (103) extends out of the mounting plate (100), the lower end of the connecting screw (103) extends out of the bottom plate (102), and first nuts (104) are provided at the upper and lower ends of the connecting screw (103), respectively, the first nut (104) at the upper end acts on the upper wall of the mounting plate (100), and the first nut (104) at the lower end acts on the bottom plate (102); The detection unit (4) comprises a first mounting plate (400) mounted on the mounting plate (100), an outer cover (401) being mounted on the first mounting plate (400), an end ring (402) being mounted on the upper end of the outer cover (401), a telescopic mechanism being arranged inside the outer cover (401), a first disc (428) being mounted on the upper end of the telescopic mechanism, a first housing (429) being mounted on the upper end of the first disc (428), the lower end of the first housing (429) being open, the upper end of the first housing (429) being closed, a motor (434) being mounted on the upper end of the first housing (429), the output shaft of the motor (434) being connected to a driving gear (435), the driving gear A driven gear (436) is meshed with the wheel (435), a rotating tube (437) is coaxially arranged on the driven gear (436), the rotating tube (437) is rotatably arranged on the upper end of the first housing (429), a second disc (430) is mounted on the upper end of the rotating tube (437), a second housing (431) is mounted on the upper end of the second disc (430), a third housing (432) is mounted on the upper end of the second housing (431), an end cover (433) is mounted on the upper end of the third housing (432), a plurality of inner extension tubes (438) are arranged on the inner wall of the third housing (432), and an infrared camera (439) is mounted on the inner side end of the inner extension tube (438); The telescopic mechanism comprises a telescopic motor (404) mounted on a first mounting plate (400); the output shaft of the telescopic motor (404) is connected to a telescopic screw rod (405); a bearing seat (440) is provided at the lower end of the telescopic screw rod (405); the bearing seat (440) is mounted on the lower end of an outer cover (401) via a pair of mounting frames (403); a lifting plate (406) is provided on the telescopic screw rod (405); a first inner tube (408) is mounted on the lifting plate (406); the first inner tube (408) is located inside the outer cover (401); a plurality of first waist-shaped holes ( 409), a plurality of first guide rails (411) are installed on the inner wall of the outer cover (401), a first guide sleeve (412) is sleeved on the inner side of the first guide rail (411), the first guide sleeve (412) is installed on the outer periphery of the first inner tube (408), a plurality of first racks (413) are installed on the inner wall of the outer cover (401), a first gear (414) is meshed on the first rack (413), the first gear (414) is located in the first waist-shaped hole (409), first inner seats (415) are provided at both ends of the first gear (414), and the first inner seat (415) is installed on the inner wall of the first inner tube (408); A second rack (416) is meshed on the inner side of the first gear (414), a second inner tube (417) is installed on the inner wall of the second rack (416), the second inner tube (417) is located inside the first inner tube (408), a second guide sleeve (418) is installed on the second inner tube (417), a second guide rail (419) is sleeved on the outer side of the second guide sleeve (418), the second guide rail (419) is installed on the inner wall of the first inner tube (408), a plurality of second waist-shaped holes are opened on the upper end of the second inner tube (417), a second gear (421) is rotatably arranged in the second waist-shaped holes, second inner seats (420) are provided at both ends of the second gear (421), the second inner seat (420) is installed on the outer wall of the second inner tube (417), a third rack (422) is meshed on the outer side of the second gear (421), and the third rack (422) is installed on the inner wall of the first inner tube (408); A fourth rack (423) is meshed on the inner side of the second gear (421), a third inner tube (424) is installed on the inner side of the fourth rack (423), the third inner tube (424) is located inside the second inner tube (417), a plurality of third guide rails (426) are installed on the inner wall of the second inner tube (417), a third guide sleeve (425) is sleeved on the inner side of the third guide rail (426), the third guide sleeve (425) is installed on the outer wall of the third inner tube (424), a second mounting plate (427) is provided on the upper end of the third inner tube (424), and the first disc (428) is installed on the second mounting plate (427).

2. The infrared detection device for aircraft maintenance according to claim 1, characterized in that: The upper end or the lower end of the connecting screw rod (103) is connected to a threaded sleeve (105), the other end of the threaded sleeve (105) is rotatably provided with a hexagonal rotating head (106), the hexagonal rotating head (106) is provided with a first screw rod (107), the other end of the first screw rod (107) is provided with a threaded sleeve (108), the outer periphery of the threaded sleeve (108) is provided with an anti-slip ring (109), the other end of the threaded sleeve (108) is provided with a second screw rod (110), the lower end of the second screw rod (110) is provided with a second nut (113), the lower end of the second screw rod (110) is provided with an upper plate (111), the upper plate (111) is located at the lower end of the second nut (113), the lower end of the second screw rod (110) is provided with an adjustment cap (112), and the adjustment cap (112) is located at the lower side of the upper plate (111).

3. The infrared detection device for aircraft maintenance according to claim 1, characterized in that: A pair of mounting arc plates (410) are provided at the lower end of the first inner tube (408), and a pair of limiting arc plates (407) are provided on the lifting plate (406), wherein the limiting arc plates (407) are located between the mounting arc plates (410).

4. The infrared detection device for aircraft maintenance according to claim 1, characterized in that: A display portion (3) is provided between the mounting plate (100) and the bottom plate (102); The display part (3) comprises a concave plate (300) installed between the installation plate (100) and the bottom plate (102); a pair of limiting plates (301) are provided on the concave plate (300); a long hole (302) is provided on the limiting plate (301); a limiting pin (305) is movably provided in the long hole (302); a movable end plate (306) is provided at the inner end of the limiting pin (305); the movable end plate (306) is located in the concave plate (300); and the movable end plate (306) is located on the inner side of the limiting plate (301); a rotating rod (307) is rotatably provided on the movable end plate (306); an inner end of the rotating rod (307) is provided with an inner block (311); the inner block (311) is located in the concave plate (300), an inner transverse plate (312) is installed on the inner block (311), and limiting side plates (313) are provided on the upper and lower sides of the inner transverse plate (312), and a guide hole (314) is opened on the limiting side plate (313), and a movable through rod (315) is movably provided on the guide hole (314), and a pair of limiting nuts are respectively provided at both ends of the movable through rod (315), and an L-shaped plate (316) is provided at the outer end of the movable through rod (315), and the limiting nut located on the outer side is located on the outer side of the L-shaped plate (316), and the limiting nut located on the inner side is located on the inner side of the limiting side plate (313), and a display screen (317) is installed on the L-shaped plate (316), and the display screen (317) is located in the concave plate (300).

5. The infrared detection device for aircraft maintenance according to claim 4, characterized in that: A concave handle (318) is installed at the outer end of the display screen (317).

6. The infrared detection device for aircraft maintenance according to claim 4, characterized in that: A fixed handle bar (308) is provided at the outer end of the rotating rod (307), a top tightening ring (309) is connected to the outer end of the rotating rod (307) via a thread, a rotating handle bar (310) is provided on the outer periphery of the top tightening ring (309), an angle is formed between the length direction of the rotating handle bar (310) and the fixed handle bar (308), and the inner wall of the top tightening ring (309) acts on the outer end of the movable end plate (306).

7. The infrared detection device for aircraft maintenance according to claim 4, characterized in that: A pair of guide pins (319) are installed on the inner transverse plate (312), a movable arm (320) is movably provided on the guide pin (319), a concave handle (322) is provided at the outer end of the movable arm (320), a pair of guide transverse holes (321) are opened on the movable arm (320), the guide pins (319) are inserted into the guide transverse holes (321), a movable inner plate (324) is installed on the inner end of the movable arm (320), a first shaft (325) is rotatably provided at one end of the movable inner plate (324), and a second shaft (326) is rotatably provided at the other end of the movable inner plate (324); A plurality of spring pins (327) are mounted on the inner transverse plate (312), a first spring (328) is sleeved on the outer end of the spring pin (327), an inner pressure plate (329) is provided on the inner end of the first spring (328), the spring pin (327) is passed through the inner pressure plate (329), a pair of inner protruding convex plates (330) are provided on the inner pressure plate (329), the inner end of the inner protruding convex plate (330) is open, and a U-shaped bayonet (331) is provided on the inner end of the inner protruding convex plate (330), The inner end of the movable penetrating rod (315) is clamped in the U-shaped bayonet (331), and a first concave member (332) is installed on the outer wall of the inner pressure plate (329). The inner ends of both sides of the first concave member (332) are provided with first transverse holes (334), and the outer ends of the first transverse holes (334) are provided with first inclined holes (333). The outer ends of the first inclined holes (333) extend inwardly at an angle, and the first shaft rod (325) moves in the first transverse holes (334) and the first inclined holes (333). A pair of outwardly extending sleeve rods (335) are mounted on the movable end plate (306), an end cap (336) is disposed at the outer end of the outwardly extending sleeve rod (335), a second spring (337) is disposed on the inner side of the end cap (336), the second spring (337) is sleeved on the outwardly extending sleeve rod (335), an inner side end of the second spring (337) is provided with an inner pressure concave plate (338), the outwardly extending sleeve rod (335) is penetrated by the inner pressure concave plate (338), U-shaped grooves (340) are formed at both ends of the inner pressure concave plate (338), and a second spring (337) is disposed on the outer wall of the inner pressure concave plate (338). A concave member (342), second oblique holes (344) are formed at both outer ends of the second concave member (342), the outer ends of the second oblique holes (344) extend outwardly at an angle, the outer ends of the second oblique holes (344) are formed at the second transverse holes (343), the second shaft rod (326) moves in the second oblique holes (344) and the second transverse holes (343), one end of the limiting plate (301) is provided with an end convex plate (303), the end convex plate (303) is provided with a positioning rod (304), and the inner end of the positioning rod (304) is inserted into the U-shaped groove (340).

8. The infrared detection device for aircraft maintenance according to claim 1, characterized in that: A gripping portion (2) is mounted on the bottom plate (102); The holding portion (2) comprises a concave shell (200) mounted on the lower wall of the bottom plate (102), the inner side of the concave shell (200) is open, a pair of telescopic pins (202) are provided on the concave shell (200), the inner side ends of the telescopic pins (202) are provided with an inner top vertical plate (204), the upper end of the inner top vertical plate (204) is provided with a T-shaped plate (205), a limiting sleeve (206) is sleeved on the T-shaped plate (205), the limiting sleeve (206) is mounted on the bottom plate (102), a pair of rotating plates (212) are hingedly connected to the outer side ends of the T-shaped plates (205), the other end of the rotating plates (212) is rotatably provided with a rotating shaft (213), and the rotating shaft (213) is arranged on the bottom plate (102), a third gear (214) is installed on the other end of the rotating plate (212), a fifth rack (215) is meshed on the third gear (214), a restraining side plate (216) is provided on the outer side of the fifth rack (215), a pair of restraining transverse holes (217) are respectively opened at both ends of the restraining side plate (216), restraining pins (218) are inserted into the restraining transverse holes (217), the inner ends of the restraining pins (218) are installed on the fifth rack (215), and a movable vertical plate (219) is installed on the outer end of the restraining pin (218), a protective sleeve (220) is provided on the movable vertical plate (219), and a buffer pad is provided on the inner wall of the protective sleeve (220).

9. The infrared detection device for aircraft maintenance according to claim 8, characterized in that: A pair of guide screws (207) are installed at the lower end of the inner top vertical plate (204), a movable plug plate (208) is sleeved on the guide screws (207), a pair of vertical guide holes (209) are opened at the lower end of the movable plug plate (208), the guide screws (207) are inserted into the vertical guide holes (209), a toggle convex plate (210) is provided at the upper end of the movable plug plate (208), a toggle groove (211) is opened on the toggle convex plate (210), a stop rod (201) is provided on the inner side of the lower end of the concave shell (200), a third spring (203) is sleeved on the telescopic pin (202), and the third spring (203) is located between the inner top vertical plate (204) and the concave shell (200).

Images