An aerial photogrammetry device with a landing buffering function

Abstract

The present invention discloses an aerial photogrammetry device with a landing buffer function, which relates to the technical field of photogrammetry, and includes a protective device. A main body is arranged at the upper end of the protective device, and a second buffer device and a first buffer device are fixedly connected to the upper end of the protective device. By setting a fixing plate in cooperation with the main body, the impact force is directed upward, thereby squeezing the buffer layers arranged in the first folding tube and the second folding tube. At the same time, four pairs of lower hinge seats in pairs cooperate with four pairs of first buffer plates in pairs to move upward. When the four pairs of first buffer plates in pairs move upward, they will drive four pairs of hinge blocks in pairs to move upward. When the four link rods move upward, they will carry out preliminary buffering, thus solving the problem that most of the current aerial photogrammetry devices do not have a buffer structure, and thus cannot buffer the device to a certain extent when the aircraft carries the device to land, and thus to a certain extent affects the service life of the aerial photogrammetry device.

Description

Technical Field

[0001] The invention relates to an aerial photography device, in particular to an aerial photography measurement device with a landing buffer function. Background Art

[0002] Aerial photogrammetry refers to the process of taking continuous images of the ground with aerial photographic instruments on an airplane, and drawing topographic maps in combination with ground control point measurement, adjustment and stereo mapping. The basic principle of single-image mapping in aerial photogrammetry is the perspective transformation of central projection, and the basic principle of stereo mapping is the geometric inversion of the projection process. Aerial photogrammetry operations are divided into field work and field work. Field work includes: ① Joint measurement of image control points. Image control points are generally marking points laid out on the ground before aerial photography. Obvious ground points on the image can also be selected to determine their plane coordinates and elevation using common measurement methods such as angle intersection, distance traverse, leveling, and elevation traverse. ② Photo mapping, through interpretation on the photos, use the specified topographic map symbols to draw the features, landforms and other elements; survey and map the important features without images and the newly added ones; annotate the place names obtained through investigation, etc.; ③ Comprehensive mapping, use a flatbed device to survey and map the contour lines on a single photo or photo map. The internal work includes: ① Encryption of mapping control points, based on the photo control points, generally use the aerial triangulation method to deduce the control points required for mapping, and check their plane coordinates and elevations; ② Survey and prepare the original topographic map, and the device for aerial photogrammetry is the aerial photogrammetry device.

[0003] At present, there are still some defects and shortcomings in the use of aerial photogrammetry equipment. The specific areas that need to be improved are as follows:

[0004] Most of today's aerial photogrammetry equipment do not have a buffer structure, and therefore cannot provide a certain degree of buffering for the equipment when the aircraft carrying the equipment lands, which in turn affects the service life of the aerial photogrammetry equipment to a certain extent. Summary of the invention

[0005] The purpose of the present invention is to provide an aerial photogrammetric device with a landing cushioning function to solve the problem mentioned in the above background technology that most of the current aerial photogrammetric devices do not have a cushioning structure, and thus cannot cushion the device to a certain extent when the aircraft carrying the device lands, thereby affecting the service life of the aerial photogrammetric device to a certain extent.

[0006] To achieve the above object, the present invention provides the following technical solutions: An aerial photogrammetry device with a landing buffer function, including a protective device, a main body is provided at the upper end of the protective device, a buffer device two and a buffer device one are fixedly connected to the upper end of the protective device, the buffer device one is arranged at the center of the protective device, the buffer device two is arranged at the edge of the protective device, the upper ends of the buffer device one and the buffer device two are both arranged at the lower end of the connecting device, and the transparent shell is made of transparent engineering plastic material.

[0007] The buffer device one includes a folding pipe one and a folding pipe two. The opposite surfaces of the folding pipe one and the folding pipe two are respectively fixedly connected to the upper and lower ends of a connecting ring. The connecting ring is connected to the buffer device two. Buffer layers are fixedly connected to the inner walls of the folding pipe one, the folding pipe two and the connecting ring. The buffer layer is made of elastic honeycomb rubber material. The buffer device two includes four limiting rails. Four limiting blocks are movably connected in the four limiting rails. The opposite surfaces of the four limiting blocks in two groups before and after are respectively fixedly connected to the opposite ends of four connecting rods in two groups before and after. The opposite ends of the four connecting rods in two groups before and after are respectively fixedly connected to the left and right sides of two linkage blocks. Two hinge blocks are sleeved on each of the four connecting rods. The opposite ends of the four groups of two-by-two hinge blocks are respectively fixedly connected to the left and right ends of four springs two. The four springs two are respectively adjusted on the four connecting rods. Limited columns one are movably connected to the four limiting blocks, and springs one are sleeved on the upper ends of the four limited columns one.

[0008] As a preferred technical solution of the present invention, the protective device includes a fixing plate. The fixing plate is fixedly connected to the main body. The main body is an aerial photogrammetry device. A transparent shell is fixedly connected to the lower end of the fixing plate. Ventilation openings are opened at both the left and right ends of the transparent shell. Filter nets are fixedly connected in the two ventilation openings. An exhaust hole is opened at the upper end of the fixing plate, and the outer side of an exhaust pipe is fixedly connected in the exhaust hole.

[0009] As a preferred technical solution of the present invention, an air inlet pipe is fixedly connected to the upper end of the folding pipe one. A one-way valve one is arranged in the air inlet pipe. An exhaust pipe is fixedly connected to the lower end of the folding pipe two. A one-way valve two is arranged in the exhaust pipe. A dispersion head is fixedly connected to the lower end of the exhaust pipe. The control directions of the one-way valve one and the one-way valve two are opposite.

[0010] As a preferred technical solution of the present invention, the connecting device includes a connecting plate. Connecting holes are opened at the four corners of the connecting plate. The lower end of the connecting plate is fixedly connected to an auxiliary plate through two buffer blocks. An air inlet hole is opened at the center of the auxiliary plate, and the outer side of an air inlet pipe is fixedly connected in the air inlet hole.

[0011] As a preferred technical solution of the present invention, the lower ends of four groups of hinge blocks, each group consisting of two, are all movably connected to the upper ends of the first buffer plates. The lower ends of four groups of hinge blocks, each group consisting of two, are all hinged to the lower hinge seats. The four groups of lower hinge seats, each group consisting of two, are all fixedly connected to the upper side of the fixed plate.

[0012] As a preferred technical solution of the present invention, wire grooves one are provided on both the left and right sides of the upper end of the connecting plate, and wire grooves two are provided on both the left and right sides of the upper end of the auxiliary plate. The two wire grooves one and the two wire grooves two are arranged correspondingly. The upper end of the auxiliary plate is fixedly connected to the lower end of the first folding pipe, and the lower end of the fixed plate is fixedly connected to the upper end of the second folding pipe.

[0013] As a preferred technical solution of the present invention, one end of the second buffer plates is movably connected to the upper ends of four groups of hinge blocks, each group consisting of two. The upper ends of four groups of hinge blocks, each group consisting of two, are all hinged to the upper hinge seats. The four groups of upper hinge seats, each group consisting of two, are all fixedly connected to the lower side of the auxiliary plate. The four limiting rails are all fixedly connected to the lower side of the auxiliary plate. The upper ends of the four first limiting columns are fixedly connected to the lower side of the auxiliary plate. The upper and lower ends of the four first springs are respectively fixedly connected to the four limiting blocks and the opposite surfaces on the lower side of the auxiliary plate.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0015] In the present invention, by arranging the fixed plate in cooperation with the main body, the impact force is directed upwards, thereby squeezing the buffer layers arranged in the first folding pipe and the second folding pipe. At the same time, it will also move the first buffer plates upward through the four groups of lower hinge seats, each group consisting of two, in cooperation with the four groups of lower hinge seats. When the four groups of first buffer plates move upward, they will drive the four groups of hinge blocks, each group consisting of two, to move upward. Subsequently, the four connecting rods can be driven to move upward. When the four connecting rods move upward, they will be initially buffered through the four limiting blocks in cooperation with the four first springs. Moreover, when the four connecting rods move upward, they will also drive the first folding pipe to be continuously squeezed through the two linkage blocks. When the first folding pipe and the second folding pipe are folded and telescoped in a cycle, the second buffer will be achieved through the buffer layer. And the third buffer will be carried out by using air suction. After the four connecting rods move upward to a certain extent, the four groups of first buffer plates will cause the four groups of hinge blocks, each group consisting of two, to move away from each other on the four connecting rods. At the same time, it will also cooperate with the auxiliary plate to make the four groups of second buffer plates drive the four groups of hinge blocks, each group consisting of two, to move away from each other synchronously, thereby achieving the purpose of the fourth buffer by overcoming the four second springs, thus solving the problem that most of the current aerial photogrammetry devices do not have a buffer structure, and thus cannot buffer the device to a certain extent when the aircraft carries the device to land, and thus affecting the service life of the aerial photogrammetry device to a certain extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a front view three-dimensional structural schematic diagram of the present invention;

[0017] Figure 2 Schematic three-dimensional structure diagram of the A-A section of the present invention;

[0018] Figure 3 Schematic three-dimensional structure diagram of the protection device of the present invention;

[0019] Figure 4 Schematic three-dimensional structure diagram of the B-B section of the present invention;

[0020] Figure 5 Schematic three-dimensional structure diagram of the first buffer device of the present invention;

[0021] Figure 6 Schematic three-dimensional structure diagram of the C-C section of the present invention;

[0022] Figure 7 Schematic three-dimensional structure diagram of the second buffer device of the present invention.

[0023] In the figure: 1 protection device, 11 transparent shell, 12 air vent, 13 filter screen, 14 fixing plate, 15 exhaust hole, 2 second buffer device, 21 limit rail, 22 first limit post, 23 first spring, 24 limit block, 25 connecting rod, 26 hinge block, 27 first buffer plate, 28 lower hinge seat, 29 second buffer plate, 210 upper hinge seat, 211 linkage block, 212 second spring, 3 main body, 4 connecting device, 41 connecting plate, 42 connecting hole, 43 buffer block, 44 first wire groove, 45 second wire groove, 46 auxiliary plate, 47 air inlet hole, 5 first buffer device, 51 intake pipe, 52 first check valve, 53 first folding pipe, 54 buffer layer, 55 second folding pipe, 56 second check valve, 57 exhaust pipe, 58 dispersion head, 59 connecting ring. Specific embodiments

[0024] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0025] Please refer to Figure 1-7 , the present invention provides a technical solution for an aerial photogrammetry device with a landing buffer function:

[0026] At the upper end of the protection device 1, there is a main body 3. At the upper end of the protection device 1, a second buffer device 2 and a first buffer device 5 are fixedly connected. The first buffer device 5 is arranged at the center of the protection device 1, and the second buffer device 2 is arranged at the edge of the protection device 1. The upper ends of the first buffer device 5 and the second buffer device 2 are both arranged at the lower end of the connecting device 4. The first buffer device 5 includes a first folding tube 53 and a second folding tube 55. Its purpose is to slow down the impact force through its own compression, and then achieve the purpose of buffering and protecting the main body 3. The opposite surfaces of the first folding tube 53 and the second folding tube 55 are respectively fixedly connected to the upper and lower ends of a connecting ring 59. The setting of the connecting ring 59 is to connect the second buffer device 2, and then achieve the purpose of synchronous linkage buffering, and then the purpose of enhancing the buffering strength can be achieved. The connecting ring 59 is connected to the second buffer device 2. A buffer layer 54 is fixedly connected to the inner walls of the first folding tube 53, the second folding tube 55 and the connecting ring 59. The buffer layer 54 is made of elastic honeycomb rubber material. Its purpose is to absorb the impact force through folding and achieve the purpose of buffering the vibration of the main body 3.

[0027] The second buffer device 2 includes four limit rails 21. Four limit blocks 24 are movably connected in the four limit rails 21. Its purpose is to limit the four connecting rods 25 so that the connecting rods 25 cooperate with the four first springs 23, the first folding tube 53 and the second folding tube 55 to achieve the purpose of buffering. The opposite surfaces of the four limit blocks 24, which are in groups of two front and back, are respectively fixedly connected to the opposite ends of the four connecting rods 25, which are in groups of two front and back. The opposite ends of the four connecting rods 25, which are in groups of two front and back, are respectively fixedly connected to the left and right sides of two linkage blocks 211. Two hinge blocks 26 are sleeved on each of the four connecting rods 25. The opposite ends of the four groups of hinge blocks 26, which are in pairs, are respectively fixedly connected to the left and right ends of four second springs 212. The setting of the second springs 212 is to cooperate to form multiple buffer layers 54, and then achieve the purpose of buffering the main body 3 and ensuring the safety of the main body 3 during the landing of the aircraft. The four second springs 212 are respectively adjusted on the four connecting rods 25. Moreover, after moving upward by a certain extent through the four connecting rods 25, the four groups of buffer plates one 27 will cause the four groups of hinge blocks 26 to move away from each other on the four connecting rods 25. At the same time, it will also cooperate with the auxiliary plate 46 to cause the four groups of buffer plates two 29 to drive the four groups of hinge blocks 26 to move away from each other synchronously, and then the purpose of overcoming the four second springs 212 to achieve the fourth buffering can be achieved. Four limit posts one 22 are movably connected to the four limit blocks 24. The upper ends of the four limit posts one 22 are all sleeved with first springs 23. Its purpose is to achieve the purpose of initial shock absorption and buffering, and also to achieve the purpose of synchronous linkage buffering to ensure sufficient buffering strength. That is, when the four groups of buffer plates one 27 move upward, they will drive the four groups of hinge blocks 26 to move upward, and then drive the four connecting rods 25 to move upward. When the four connecting rods 25 move upward, they will cooperate with the four first springs 23 through the four limit blocks 24 for initial buffering.

[0028] The upper end of the first folding pipe 53 is fixedly connected to an intake pipe 51. A first one-way valve 52 is arranged inside the intake pipe 51. The purpose is to suck outside air into the first folding pipe 53, the second folding pipe 55 and the linkage 59. The lower end of the second folding pipe 55 is fixedly connected to an exhaust pipe 57. A second one-way valve 56 is arranged inside the exhaust pipe 57. The lower end of the exhaust pipe 57 is fixedly connected to a dispersion head 58. The purpose is to concentrate and disperse the exhausted air, so as to achieve the purpose of cleaning the shooting port of the main body 3. The control directions of the first one-way valve 52 and the second one-way valve 56 are opposite. The purpose is to use the buffering force to achieve the purpose of sucking and exhausting air to clean the main body 3. At the same time, it is also to use air to achieve the purpose of buffering. That is, when the four connecting rods 25 move upward, they will also drive the linkage 59 to squeeze the first folding pipe 53 through the two linkage blocks 211. The setting of the linkage 59 is to close the first folding pipe 53 and the second folding pipe 55 to form a closed space to achieve the purpose of sucking and exhausting air. At the same time, it is also to connect the linkage blocks 211 to ensure that the buffer structure works synchronously and cooperatively to ensure sufficient buffer strength. When the first folding pipe 53 and the second folding pipe 55 are cyclically folded and telescoped, a second buffer will be achieved through the buffer layer 54, and air suction will be used for a third buffer. And when buffering through air, outside air will be sucked through the intake pipe 51 in cooperation with the first one-way valve 52 and the second one-way valve 56. And the sucked air will be discharged through the exhaust pipe 57, the first one-way valve 52, the second one-way valve 56 and the dispersion head 58, so as to impact the lower end of the main body 3 to achieve the purpose of cleaning the shooting port at the lower end of the main body 3 to a certain extent.

[0029] The protection device 1 includes a fixing plate 14. The fixing plate 14 is fixedly connected to a main body 3. The main body 3 is an aerial photogrammetry device. The lower end of the fixing plate 14 is fixedly connected to a transparent shell 11. The purpose is to protect the main body 3 and at the same time not affect the shooting work of the main body 3. The transparent shell 11 is made of transparent engineering plastic. Vent holes 12 are opened at both the left and right ends of the transparent shell 11. Filter nets 13 are fixedly connected inside the two vent holes 12. The purpose is to discharge the incoming air, so as to avoid the air not being able to enter due to air pressure in the protection shell, which affects the cleaning function of the main body 3. The setting of the filter plate is to avoid a large amount of foreign impurities entering and affecting the shooting function of the main body 3. An exhaust hole 15 is opened at the upper end of the fixing plate 14. The outer side of the exhaust pipe 57 is fixedly connected inside the exhaust hole 15.

[0030] The connecting device 4 includes a connecting plate 41. Connecting holes 42 are opened at the four corners of the connecting plate 41. The purpose is to fix the main body 3 to a suitable position on the aircraft through the connecting holes 42 in cooperation with screws. The lower end of the connecting plate 41 is fixedly connected to an auxiliary plate 46 through two buffer blocks 43. The purpose is to avoid the vibration of the aircraft itself from affecting the buffering function of the main body 3. At the same time, it can also play a certain buffering function. An air inlet hole 47 is opened at the center of the auxiliary plate 46. The outer side of the intake pipe 51 is fixedly connected inside the air inlet hole 47.

[0031] On both the left and right sides of the upper end of the connecting plate 41, there are first wire grooves 44. During installation, the connecting plate 41 can be positioned at a suitable position through corresponding fixing screws and four connecting holes 42. At the same time, the main body 3 is connected to the corresponding equipment by using wires in cooperation with the two first wire grooves 44 and two second wire grooves 45. Then, aerial photogrammetry can be carried out through the main body 3 in cooperation with the corresponding equipment. On both the left and right sides of the upper end of the auxiliary plate 46, there are second wire grooves 45. The purpose is to ensure the connection and passage of the circuit and the protective function of the circuit. The two first wire grooves 44 and the two second wire grooves 45 are arranged correspondingly. The lower end of the auxiliary plate 46 is fixedly connected to the upper end of the first folding pipe 53, and the upper end of the fixing plate 14 is fixedly connected to the lower end of the second folding pipe 55. The purpose is to ensure the squeezing and opening function of the first folding pipe 53 and the second folding pipe 55.

[0032] The lower ends of four groups of hinge blocks 26, with two in each group, are all movably connected to the upper ends of the first buffer plates 27. The purpose is to achieve the purpose of shock absorption and buffering through the mutual approach of the auxiliary plate 46 and the fixed block in cooperation with the hinge blocks 26. The lower ends of four groups of first buffer plates 27, with two in each group, are all hinged to the lower hinge seats 28. The purpose is to position and connect the second buffer device 2. Four groups of lower hinge seats 28, with two in each group, are all fixedly connected to the upper side surface of the fixing plate 14.

[0033] The upper ends of four groups of hinge blocks 26, with two in each group, are all movably connected to one end of the second buffer plates 29. The upper ends of four groups of second buffer plates 29, with two in each group, are all hinged to the upper hinge seats 210. Four groups of upper hinge seats 210, with two in each group, are all fixedly connected to the lower side surface of the auxiliary plate 46. The four limiting rails 21 are all fixedly connected to the lower side surface of the auxiliary plate 46. The purpose is to limit the relative position of the first spring 23, and then achieve buffering to ensure the safety of the main body 3 itself when the aircraft lands. The upper ends of the four limiting columns 22 are fixedly connected to the lower side surface of the auxiliary plate 46. The upper and lower ends of the four springs 23 are respectively fixedly connected to the four limiting blocks 24 and the opposite surfaces on the lower side of the auxiliary plate 46.

[0034] The specific implementation manner of the present invention:

[0035] During installation, the connecting plate 41 is positioned at a suitable position through corresponding fixing screws cooperating with four connecting holes 42. At the same time, the main body 3 is connected to the corresponding equipment by means of a circuit cooperating with two first wire grooves 44 and two second wire grooves 45. Then, aerial photogrammetry can be carried out through the main body 3 cooperating with the corresponding equipment. When the aircraft drives the two main bodies 3 to land, the vibration during landing will cause the main body 3 to drive the two fixing plates 14 to have an upward force, thereby squeezing the buffer layers 54 provided in the first folding tube 53 and the second folding tube 55. At the same time, it will also move upward through four groups of lower hinge seats 28 in pairs cooperating with four groups of buffer plates 27 in pairs. When the four groups of buffer plates 27 in pairs move upward, they will drive the four groups of hinge blocks 26 in pairs to move upward. Subsequently, the four connecting rods 25 can be driven to move upward. When the four connecting rods 25 move upward, they will be initially buffered by four limiting blocks 24 cooperating with four first springs 23. Moreover, when the four connecting rods 25 move upward, they will also drive the connecting ring 59 to squeeze the first folding tube 53 through two linkage blocks 211. When the first folding tube 53 and the second folding tube 55 are cyclically folded and telescoped, a second buffer will be achieved through the buffer layer 54. And air suction will be used for a third buffer. And when buffering through air, external air will be sucked through the air inlet pipe 51 cooperating with the first one-way valve 52 and the second one-way valve 56. And the sucked air will be discharged through the exhaust pipe 57, the first one-way valve 52, the second one-way valve 56 and the dispersion head 58, thereby impacting the lower end of the main body 3 to achieve the purpose of cleaning the shooting port at the lower end of the main body 3 to a certain extent. After the four connecting rods 25 move upward to a certain extent, the four groups of buffer plates 27 in pairs will cause the four groups of hinge blocks 26 in pairs to move away from each other on the four connecting rods 25. At the same time, it will also cooperate with the auxiliary plate 46 to cause the four groups of buffer plates 29 in pairs to drive the four groups of hinge blocks 26 in pairs to move away from each other synchronously. Then, the purpose of the fourth buffer can be achieved by overcoming the four second springs 212. And the four buffers can gradually and continuously respond to vibrations of different intensities, thereby achieving the function of protecting the main body 3.

[0036] In the description of the present invention, it should be understood that the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention.

[0037] In the present invention, unless otherwise clearly specified and limited, for example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection, an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium. It can be the internal communication of two elements or the interaction relationship between two elements. Unless otherwise clearly limited, for those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0038] Although embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An aerial photogrammetry device with a landing buffer function, comprising a protective device (1), characterized in that: The upper end of the protection device (1) is provided with a main body (3). The upper end of the protection device (1) is fixedly connected with a second buffer device (2) and a first buffer device (5). The first buffer device (5) is arranged at the center of the protection device (1), and the second buffer device (2) is arranged at the edge of the protection device (1). The upper ends of the first buffer device (5) and the second buffer device (2) are both arranged at the lower end of the connecting device (4). The first buffer device (5) includes a first folding pipe (53) and a second folding pipe (55). The opposite surfaces of the first folding pipe (53) and the second folding pipe (55) are respectively fixedly connected to the upper and lower ends of a connecting ring (59). The connecting ring (59) is connected to the second buffer device (2). A buffer layer (54) is fixedly connected to the inner walls of the first folding pipe (53), the second folding pipe (55) and the connecting ring (59). The buffer layer (54) is made of elastic honeycomb rubber material. The second buffer device (2) includes four limit rails (21). A limit block (24) is movably connected in each of the four limit rails (21). The opposite surfaces of the four limit blocks (24), in pairs front and back, are respectively fixedly connected to the opposite ends of four connecting rods (25) in pairs front and back. The opposite ends of the four connecting rods (25) in pairs front and back are respectively fixedly connected to the left and right sides of two linkage blocks (211). Two hinge blocks (26) are sleeved on each of the four connecting rods (25). The opposite ends of the four pairs of hinge blocks (26) are respectively fixedly connected to the left and right ends of four second springs (212). The four second springs (212) are respectively adjusted on the four connecting rods (25). A first limiting column (22) is movably connected to each of the four limit blocks (24). A first spring (23) is sleeved on the upper end of each of the four first limiting columns (22).

2. The aerial photogrammetry device with a landing buffer function according to claim 1, wherein: The upper end of the first folding pipe (53) is fixedly connected with an air inlet pipe (51). A one-way valve one (52) is arranged in the air inlet pipe (51). The lower end of the second folding pipe (55) is fixedly connected with an exhaust pipe (57). A one-way valve two (56) is arranged in the exhaust pipe (57). The lower end of the exhaust pipe (57) is fixedly connected with a dispersion head (58). The control directions of the one-way valve one (52) and the one-way valve two (56) are opposite.

3. The aerial photogrammetry device with a landing buffer function according to claim 2, wherein: The protection device (1) includes a fixing plate (14). The fixing plate (14) is fixedly connected with the main body (3). The main body (3) is an aerial photogrammetry device. The lower end of the fixing plate (14) is fixedly connected with a transparent shell (11). Ventilation openings (12) are respectively arranged at the left and right ends of the transparent shell (11). A filter screen (13) is fixedly connected in each of the two ventilation openings (12). An exhaust hole (15) is arranged at the upper end of the fixing plate (14). The outer side surface of the exhaust pipe (57) is fixedly connected in the exhaust hole (15).

4. The aerial photogrammetry device with a landing buffering function according to claim 3, wherein: The connecting device (4) includes a connecting plate (41). Connecting holes (42) are provided at the four corners of the connecting plate (41). The lower end of the connecting plate (41) is fixedly connected to an auxiliary plate (46) through two buffer blocks (43). An air inlet hole (47) is provided at the center of the auxiliary plate (46). The outer side of an air inlet pipe (51) is fixedly connected inside the air inlet hole (47).

5. The aerial photogrammetry device with a landing buffer function according to claim 4, characterized in that: Wire grooves one (44) are provided on the left and right sides of the upper end of the connecting plate (41). Wire grooves two (45) are provided on the left and right sides of the upper end of the auxiliary plate (46). The two wire grooves one (44) and the two wire grooves two (45) are arranged correspondingly. The lower end of the auxiliary plate (46) is fixedly connected to the upper end of a folding pipe one (53). The upper end of a fixing plate (14) is fixedly connected to the lower end of a folding pipe two (55).

6. The aerial photogrammetry device with a landing buffering function according to claim 5, characterized in that: The lower ends of four groups of hinge blocks (26), with two in each group, are movably connected to the upper ends of buffer plates one (27). The lower ends of four groups of buffer plates one (27), with two in each group, are hinged to lower hinge seats (28). The four groups of lower hinge seats (28), with two in each group, are fixedly connected to the upper side of the fixing plate (14).

7. The aerial photogrammetry device with a landing buffering function according to claim 6, characterized in that: The upper ends of four groups of hinge blocks (26), with two in each group, are movably connected to one ends of buffer plates two (29). The upper ends of four groups of buffer plates two (29), with two in each group, are hinged to upper hinge seats (210). The four groups of upper hinge seats (210), with two in each group, are fixedly connected to the lower side of the auxiliary plate (46). The four limiting rails (21) are fixedly connected to the lower side of the auxiliary plate (46). The upper ends of the four limiting columns one (22) are fixedly connected to the lower side of the auxiliary plate (46). The upper and lower ends of the four springs one (23) are respectively fixedly connected to the four limiting blocks (24) and the opposite surfaces on the lower side of the auxiliary plate (46).

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