Bridge inspection unmanned aerial vehicle frame

Abstract

The invention relates to the technical field of unmanned aerial vehicles, in particular to a bridge inspection unmanned aerial vehicle frame which comprises a bottom block, a cylinder, elastic supporting legs, a fixing plate, a lifting column and a chassis, and an annular groove is formed in the inner wall of the cylinder. According to the bridge inspection unmanned aerial vehicle rack, a cylinder drives a lifting column to move upwards in a second round hole, a first linkage column relieves limiting of a triangular block, the first linkage column moves upwards to the slope face of the triangular block, a second reset spring in a stretching state is reset, a round handle drives a sliding column to slide into a third round hole, and the triangular block is fixed through a second reset spring; and a triangular block extrudes a first linkage column to drive a lifting column to move upwards, and a chassis moves upwards in an annular groove, so that negative pressure is generated in elastic supporting feet, the elastic supporting feet are tightly adsorbed to the airport apron surface, the stability of the unmanned aerial vehicle body is improved, and the phenomenon that the unmanned aerial vehicle body bounces when falling to the ground is prevented.

Description

Technical Field

[0001] The present invention relates to the technical field of unmanned aerial vehicles, and in particular to a frame of a bridge inspection unmanned aerial vehicle. Background Art

[0002] With the continuous acceleration of urbanization, the number of motor vehicles has continued to increase dramatically, and the urban road network has continued to extend. However, while these urban traffic networks bring convenience to people's lives, the situation of many cars and roads has also buried huge hidden dangers for traffic safety, and has posed more arduous challenges to traffic managers. However, there are many loopholes and blind spots in traditional traffic management methods, the defects and disadvantages of the original infrastructure have been continuously exposed, and the technological level of traffic management is stretched. Mobility, urgency, and suddenness are the characteristics of police work, which cannot be met by traditional traffic management methods such as traffic police road patrols and fixed-point camera monitoring. Drones have the characteristics of rapid action, comprehensive information collection, and high controllability, which can meet the real-time data and information needs of the traffic management field. Especially in the field of traffic law enforcement in complex environments, drones provide a new solution for traffic management, which can greatly expand the detectable field in high-risk environments and reduce the harm of dangerous law enforcement environments to the life and property safety of traffic management personnel. For traffic management departments, the comprehensive use of intelligent traffic equipment such as drones, based on the use of existing transportation infrastructure, is of great significance in improving the utilization rate of transportation infrastructure and speeding up the handling of accidents. Fully applying advanced scientific and technological technologies to traffic management has achieved the long-term development goal of "using technology to increase police force" to a certain extent.

[0003] A Chinese patent document with authorization number CN111268131B discloses a drone inspection device, which belongs to the field of equipment inspection technology and includes a drone body, support columns, protective curtains, and protective doors: a slide rail is provided on the drone body, and a camera is slidably arranged on the slide rail; there are four support columns, and the four support columns are symmetrical in pairs and arranged around the slide rail. One end of the support column is connected to the drone body, and the other end is connected to the bottom plate. A vertical slide groove is provided on the support column; there are three protective curtains, and the protective curtains are arranged between two support columns and can slide along the vertical slide grooves of the support columns on both sides thereof; there are two protective doors, and the two protective doors are respectively arranged on two adjacent support columns and opposite to the lens of the camera. The two protective doors can move toward each other and close, and the protective doors and protective curtains protect the camera by closing.

[0004] After the drone inspection is completed, the staff will retract the drone into the hangar used to carry the drone, and then store the drone to protect it. During the use of the above-mentioned drone inspection equipment, when the drone is retracted into the hangar carrying the drone after the inspection, the drone will be lowered to the apron surface of the hangar. If the frame on one side of the drone first touches the ground and the frame on the other side does not touch the ground, the center of gravity of the drone will shift, and the balance of the fuselage will be affected during landing, causing the frame that first contacts the apron surface to produce a greater impact force, thereby causing the fuselage to vibrate and bounce. The strong vibration may affect the storage device of the drone, resulting in loss or damage of flight data. Summary of the invention

[0005] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a bridge inspection UAV frame to solve the above-mentioned vibration and bouncing phenomenon of the fuselage. Strong vibration may affect the storage device of the UAV, resulting in loss or damage of flight data.

[0006] In order to achieve the above object, the technical solution adopted by the present invention is:

[0007] A bridge inspection drone frame comprises a drone body, on which a wing is mounted;

[0008] A shock absorbing component, the shock absorbing component is arranged at the bottom of the drone body, the shock absorbing component comprises four bottom blocks installed at the bottom of the drone body, each of the bottom blocks has an inner cavity, the bottoms of the four bottom blocks are provided with a first circular hole, the inside of each of the first circular holes is slidably connected with a cylinder, the bottoms of every two cylinders are fixedly connected with the same elastic foot, a fixing plate is fixed on the inner cavity wall of each bottom block, and the space between the bottom of the fixing plate and the inner cavity bottom wall of the bottom block is filled with gas;

[0009] A negative pressure component is arranged on the bottom block, and the negative pressure component includes a plurality of lifting columns respectively arranged inside the cylinder, a chassis is fixed to the bottom of each lifting column, and an annular groove adapted to the chassis is opened on the inner wall of each cylinder.

[0010] Preferably, a first return spring is fixed to the bottom of each fixed plate, the bottom of the first return spring is fixed to the top of the corresponding cylinder, an annular plate is fixed to the outer wall of each cylinder, and an elastic member is fixed to the top of each annular plate.

[0011] Preferably, each of the fixing plates is provided with a second circular hole adapted to the lifting column, the lifting column is slidably connected inside the corresponding second circular hole, the outer surface of the lifting column is in contact with the inner wall of the second circular hole, and two symmetrical first linkage columns are fixed on the surface of each of the lifting columns.

[0012] Preferably, an end plate is provided on the upper side of each of the fixed plates, and two symmetrical triangular blocks are fixed on one side of each of the end plates, each of the triangular blocks corresponds to a first linkage column, and the bottom end of the triangular block has an arc-shaped surface, and the initial position of the first linkage column is located at the arc-shaped surface of the corresponding triangular block.

[0013] Preferably, each of the bottom blocks is provided with a third circular hole, and the third circular hole is communicated with the inner cavity of the bottom block, and the interior of each of the third circular holes is slidably connected with a sliding column, the outer surface of the sliding column is fitted with the inner wall of the third circular hole, one end of the sliding column is fixed to a side wall of the corresponding end plate, and a round handle is fixed to the end of each sliding column away from the corresponding bottom block.

[0014] Preferably, a second return spring is fixed between the side of each round handle facing the corresponding bottom block and the bottom block to support the round handle.

[0015] Preferably, a center of gravity adjustment component is provided on the bottom block, and the center of gravity adjustment component includes a connecting plate fixed between the four bottom blocks, two side plates are fixed on the top of the connecting plate, a top shaft is provided between the two side plates, two symmetrical rotating shafts are fixed on the outer wall of the top shaft, each rotating shaft corresponds to a side plate, one end of the rotating shaft is rotatably connected to a side wall of the corresponding side plate, and a counterweight block is fixed on the top of the top shaft for adjusting the center of gravity of the drone body.

[0016] Preferably, a bottom shaft is fixed to the bottom of the top shaft, a support plate is fixed between the two round handles on the upper side of each elastic support foot, a driving plate is fixed on the side of each support plate facing the bottom shaft, and a push block is provided on one side of each driving plate.

[0017] Preferably, a limiting column is fixed on the side of the push block away from the bottom shaft, and a limiting groove adapted to the limiting column is opened on the inner wall of the driving plate. The limiting column is slidably connected inside the limiting groove, and the outer surface of the limiting column is in contact with the inner wall of the limiting groove. A third return spring is fixed between one side of the push block and the corresponding driving plate for supporting the push block.

[0018] Preferably, outer rings are fixed to the outer surfaces of the two rotating shafts, a first electromagnetic block is fixed to one side of the two outer rings, and a second electromagnetic block is fixed to one side of the two side plates.

[0019] The beneficial effects of the present invention are:

[0020] 1. The cylinder is driven upward by the elastic support foot, and the cylinder compresses the gas under the fixed plate and the first return spring, and the annular plate on the cylinder drives the elastic member to press against the bottom of the bottom block, which can reduce the vibration generated when the drone body lands, thereby reducing the bouncing phenomenon of the drone body and reducing the looseness of the internal components of the drone body.

[0021] 2. The cylinder drives the lifting column to move upward inside the second circular hole, the first linkage column releases the limit on the triangular block, and the first linkage column moves up to the slope of the triangular block, the second reset spring in the stretched state is reset, and the round handle drives the sliding column to slide into the inside of the third circular hole, and the triangular block drives the lifting column to move upward by squeezing the first linkage column, and the chassis moves up inside the annular groove, so that negative pressure is generated inside the elastic support foot, so that the elastic support foot is tightly adsorbed on the apron surface, thereby improving the stability of the drone body and preventing the drone body from bouncing when it lands.

[0022] 3. The driving plate is driven to slide by the round handle, and the push block of the driving plate pushes the bottom shaft, the bottom shaft drives the top shaft to rotate around the axial direction of the rotating shaft, and the top shaft drives the counterweight block from a vertical state to an inclined state. At this time, a swing force will be generated when the counterweight block turns to an inclined state, and the drone body is affected by the change in the position of the counterweight block, so that the center of gravity of the drone body changes, so that the elastic support foot on the other side of the drone body drops and contacts the ground, accelerating the elastic support foot on the other side of the drone body to move down and rest on the apron surface, thereby improving the stability of the drone body. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of the present invention.

[0024] Figure 2 It is a schematic structural diagram of the shock absorbing assembly of the present invention.

[0025] Figure 3 It is a structural schematic diagram of the first three-dimensional cross-section of the bottom block of the present invention.

[0026] Figure 4 For the present invention Figure 3 Schematic diagram of the structure enlarged at point A in the middle.

[0027] Figure 5 It is a schematic structural diagram of the first three-dimensional cross section of the cylinder of the present invention.

[0028] Figure 6 It is a structural schematic diagram of the center of gravity adjustment assembly of the present invention.

[0029] Figure 7 It is a structural schematic diagram of the first three-dimensional cross section of the driving plate of the present invention.

[0030] In the figure:

[0031] 10. UAV body; 11. Wings;

[0032] 20. shock absorbing assembly; 21. bottom block; 22. first circular hole; 23. cylinder; 24. elastic support foot; 25. fixing plate; 26. first return spring; 27. annular plate; 28. elastic member;

[0033] 30. Negative pressure assembly; 31. Lifting column; 32. Second circular hole; 33. First linkage column; 34. End plate; 35. Triangular block; 36. Third circular hole; 37. Sliding column; 38. Second return spring; 39. Round handle; 310. Chassis; 311. Annular groove;

[0034] 40. Center of gravity adjustment assembly; 41. Connecting plate; 42. Side plate; 43. Rotating shaft; 44. Top shaft; 45. Counterweight block; 46. Bottom shaft; 47. Support plate; 48. Drive plate; 49. Push block; 410. Limiting column; 411. Limiting groove; 412. Third return spring; 413. Outer ring; 414. First electromagnetic block; 415. Second electromagnetic block. DETAILED DESCRIPTION

[0035] The following will refer to the attached Figures 1 to 7 The embodiments of the present invention are described in detail. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the protection scope of the present invention.

[0036] As attached Figure 1-Figure 7 As shown, a bridge inspection drone frame includes:

[0037] The drone body 10 is provided with four wings 11 arranged at equal distances from each other. The four wings 11 are axially arranged on the surface of the drone body 10 .

[0038] A shock absorbing assembly 20 is installed at the bottom of the drone body 10 to reduce the vibration generated when the drone body 10 lands on the apron.

[0039] refer to Figure 1 , Figure 2 , Figure 3 and Figure 5As shown, the shock absorbing assembly 20 includes four bottom blocks 21 installed at the bottom of the drone body 10. In this embodiment, the bottom blocks 21 are square in shape. The four bottom blocks 21 are arranged in groups of two, and the two groups of bottom blocks 21 are respectively located on both sides of the drone body 10, and the two groups of bottom blocks 21 are symmetrical with the drone body 10 as the center. Each bottom block 21 has an inner cavity, and the inner cavity is also square in shape. The bottoms of the four bottom blocks 21 are all provided with first circular holes 22, and the first circular holes 22 are connected to the inner cavities of the corresponding bottom blocks 21. A cylinder 23 is slidably connected to the inside of each first circular hole 22, and the outer surface of the cylinder 23 fits the inner wall of the first circular hole 22, and the diameter of the cylinder 23 is smaller than the diameter of the first circular hole 22. The bottoms of every two cylinders 23 are fixedly connected with the same elastic foot 24 for supporting the drone body 10, thereby maintaining the stability of the drone body 10.

[0040] A fixing plate 25 is fixed on the inner cavity wall of each bottom block 21, and gas is filled between the bottom of the fixing plate 25 and the inner cavity bottom wall of the bottom block 21, a first return spring 26 is fixed to the bottom of each fixing plate 25, and the bottom of the first return spring 26 is fixed to the top of the corresponding cylinder 23, an annular plate 27 is fixed to the outer wall of each cylinder 23, and an elastic member 28 is fixed to the top of each annular plate 27.

[0041] When the drone body 10 is finished using and returns to the apron, the wing 11 drives the drone body 10 to move down to the plane of the apron. When the two elastic feet 24 contact the apron surface, the elastic feet 24 will be compressed. At the same time, the elastic feet 24 drive the cylinder 23 to slide inside the first circular hole 22, and the cylinder 23 moves upward inside the inner cavity of the bottom block 21. The cylinder 23 will compress the gas under the fixed plate 25 and the first return spring 26. At this time, the reaction of the gas inside the inner cavity of the bottom block 21 cooperates with the first return spring 26, the elastic feet 24 and the elastic member 28 to weaken the vibration generated when the drone body 10 lands, thereby reducing the shaking of the drone body 10 when it lands and maintaining the stability of the internal components of the drone body 10.

[0042] The cylinder 23 is driven upward by the elastic support foot 24, and the cylinder 23 compresses the gas under the fixed plate 25 and the first return spring 26, and the annular plate 27 on the cylinder 23 drives the elastic member 28 to press against the bottom of the bottom block 21, which can reduce the vibration generated when the drone body 10 lands, thereby reducing the bouncing phenomenon of the drone body 10 and reducing the looseness of the internal components of the drone body 10.

[0043] refer to Figure 2 , Figure 3 , Figure 4 and Figure 5As shown, a negative pressure assembly 30 is provided on the bottom block 21 for generating negative pressure inside the elastic support foot 24 so as to adsorb the elastic support foot 24 to the apron surface, thereby preventing the drone body 10 from bouncing due to vibration when landing.

[0044] The negative pressure assembly 30 includes a plurality of lifting columns 31 respectively arranged inside the cylinder 23, and the outer surface of each lifting column 31 fits the inner cavity wall of the corresponding cylinder 23, and the diameter of the lifting column 31 is smaller than the diameter of the inner cavity of the cylinder 23. Each fixing plate 25 is provided with a second circular hole 32 adapted to the lifting column 31, and the lifting column 31 is slidably connected inside the corresponding second circular hole 32, and the outer surface of the lifting column 31 fits the inner wall of the second circular hole 32, and two symmetrical first linkage columns 33 are fixed on the surface of each lifting column 31.

[0045] An end plate 34 is provided on the upper side of each fixed plate 25, and two symmetrical triangular blocks 35 are fixed on one side of each end plate 34, each triangular block 35 corresponds to a first linkage column 33, and the bottom end of the triangular block 35 has an arc surface, and the initial position of the first linkage column 33 is located at the arc surface of the corresponding triangular block 35.

[0046] A third circular hole 36 is provided on each bottom block 21, and the third circular hole 36 is communicated with the inner cavity of the bottom block 21, a sliding column 37 is slidably connected to the interior of each third circular hole 36, and the outer surface of the sliding column 37 fits with the inner wall of the third circular hole 36, and one end of the sliding column 37 is fixed to a side wall of the corresponding end plate 34, and a round handle 39 is fixed to the end of each sliding column 37 away from the corresponding bottom block 21, and a second reset spring 38 is fixed between the side of each round handle 39 facing the corresponding bottom block 21 and the bottom block 21, which is used to support the round handle 39, so as to facilitate the reset of the round handle 39.

[0047] A chassis 310 is fixed to the bottom of each lifting column 31 , and an annular groove 311 adapted to the chassis 310 is opened on the inner wall of each cylinder 23 , and the height of the annular groove 311 is greater than the height of the chassis 310 , and the annular groove 311 is provided for the chassis 310 to slide up and down.

[0048] When the first linkage column 33 is located at the bottom end of the triangular block 35, the second return spring 38 is in a stretched state. When the drone body 10 is against the apron surface, the cylinder 23 moves upward, and the annular groove 311 of the cylinder 23 drives the chassis 310 to move upward, and the chassis 310 drives the lifting column 31 to move upward inside the cylinder 23. When the cylinder 23 compresses the elastic member 28 and the first return spring 26 to the limit, the cylinder 23 no longer moves upward, and the first linkage column 33 of the lifting column 31 moves to the inclined surface of the triangular block 35, and releases the limit on the triangular block 35. The second return spring 38 in a stretched state is reset, and the triangular block 35 slides at the bottom of the first linkage column 33, and the first linkage column 33 is pushed by the triangular block 35 to slide to the top of the triangular block 35.

[0049] When the first linkage column 33 slides from the bottom end of the triangular block 35 to the top end thereof, the first linkage column 33 drives the lifting column 31 to move upward inside the cylinder 23, and the chassis 310 moves upward inside the annular groove 311. At this time, the chassis 310 extracts the gas inside the elastic support foot 24, so that the inside of the elastic support foot 24 is in a negative pressure state. When the first linkage column 33 is located at the top end of the triangular block 35, the top of the chassis 310 contacts the inner top wall of the annular groove 311, so that the elastic support foot 24 is adsorbed on the apron surface, thereby preventing the UAV body 10 from bouncing when landing.

[0050] When the drone body 10 is in use, it will rise above the apron, and the elastic member 28 and the first return spring 26 will be freed from the restriction, which will drive the cylinder 23 to slide to the outside of the first circular hole 22, and the cylinder 23 will drive the chassis 310 to move downward at the same time. Through the cooperation of the second return spring 38, the elastic member 28 and the gas under the fixed plate 25, the first linkage column 33 can overcome the characteristics of the second return spring 38, so that the cylinder 23 drives the chassis 310 to move downward.

[0051] The first linkage column 33 slides from the top end of the triangular block 35 to the bottom end thereof, and the triangular block 35 is pushed by the first linkage column 33, the end plate 34 slides to the side away from the lifting column 31, and the sliding column 37 slides to the outside of the third circular hole 36, and the round handle 39 stretches the second return spring 38. When the cylinder 23 is reset to the initial position, the first linkage column 33 is located below the bottom end of the triangular block 35, and the first linkage column 33 limits the triangular block 35, so that the second return spring 38 is in a stretched state, thereby keeping the drone body 10 on the ground. The above operation can be repeated to maintain the stability of the drone body 10 when it lands.

[0052] The cylinder 23 drives the lifting column 31 to move upward inside the second circular hole 32, the first linkage column 33 releases the limit on the triangular block 35, and the first linkage column 33 moves up to the slope of the triangular block 35, the second reset spring 38 in the stretched state is reset, and the round handle 39 drives the sliding column 37 to slide into the third circular hole 36, and the triangular block 35 drives the lifting column 31 to move upward by squeezing the first linkage column 33, and the chassis 310 moves up inside the annular groove 311, so that negative pressure is generated inside the elastic support foot 24, so that the elastic support foot 24 is tightly adsorbed on the apron surface, thereby improving the stability of the drone body 10 and preventing the drone body 10 from bouncing when it lands.

[0053] refer to Figure 4 , Figure 5 , Figure 6 and Figure 7 As shown, a center of gravity adjustment component 40 is provided on the bottom block 21, which can adjust the center of gravity of the drone body 10 when it lands, thereby preventing the drone body 10 from tilting when it lands.

[0054] The center of gravity adjustment component 40 includes a connecting plate 41 fixed between four bottom blocks 21, two side plates 42 are fixed to the top of the connecting plate 41, a top shaft 44 is arranged between the two side plates 42, two symmetrical rotating shafts 43 are fixed to the outer wall of the top shaft 44, each rotating shaft 43 corresponds to a side plate 42, and one end of the rotating shaft 43 is rotatably connected to a side wall of the corresponding side plate 42, and a counterweight block 45 is fixed to the top of the top shaft 44 for adjusting the center of gravity of the drone body 10, thereby maintaining the stability of the drone body 10.

[0055] A bottom shaft 46 is fixed to the bottom of the top shaft 44, a support plate 47 is fixed between the two round handles 39 on the upper side of each elastic support foot 24, and the two support plates 47 are staggered, and a driving plate 48 is fixed to the side of each support plate 47 facing the bottom shaft 46. In the present embodiment, the driving plate 48 is L-shaped, and a push block 49 is provided on one side of each driving plate 48.

[0056] A limiting column 410 is fixed on the side of the push block 49 away from the bottom shaft 46, and a limiting groove 411 adapted to the limiting column 410 is opened on the inner wall of the driving plate 48, and the limiting column 410 is slidably connected inside the limiting groove 411, and the outer surface of the limiting column 410 is in contact with the inner wall of the limiting groove 411, and a third reset spring 412 is fixed between one side of the push block 49 and the corresponding driving plate 48, which is used to support the push block 49, so as to facilitate the reset of the push block 49.

[0057] An outer ring 413 is fixed to the outer surface of the two rotating shafts 43 , a first electromagnetic block 414 is fixed to one side of the two outer rings 413 , and a second electromagnetic block 415 is fixed to one side of the two side plates 42 .

[0058] When the drone body 10 lands and tilts, the elastic foot 24 on one side of the drone body 10 will first contact the apron surface. At this time, the elastic foot 24 that first contacts the apron surface drives the cylinder 23 to move upward, and the cylinder 23 drives the first linkage column 33 of the lifting column 31 to release the limit on the triangular block 35, and the second reset spring 38 in the stretched state is reset, and the two second reset springs 38 respectively drive the connected round handles 39 to slide toward the corresponding bottom block 21, and the two round handles 39 drive the same connected support plate 47 to slide toward the corresponding bottom block 21 synchronously, and the push block 49 of the drive plate 48 pushes the bottom shaft 46. At this time, the bottom shaft 46 rotates around the axial direction of the rotating shaft 43, and the first electromagnetic block 414 and the second electromagnetic block 415 move away from each other and no longer limit the rotating shaft 43, and the counterweight block 45 swings, and the swinging direction is opposite to the sliding direction of the driving plate 48. The swinging force generated by the swinging of the counterweight block 45 and the change of gravity can accelerate the downward movement of the elastic foot 24 on the other side that does not contact the apron surface.

[0059] When the elastic support foot 24 on the other side is affected by the counterweight block 45 and moves downward to rest on the apron surface, the elastic support foot 24 on the other side drives the connected cylinder 23 to move upward, and the second return spring 38 drives the sliding column 37 to return to its original position, and the sliding column 37 drives the connected driving plate 48 to slide toward the corresponding bottom block 21, and the driving plate 48 drives the pushing block 49 to push the bottom shaft 46, and the two pushing blocks 49 push each other by pressing against the bottom shaft 46, and compress the third return spring 412, and the bottom shaft 46 drives the rotating shaft 43 to rotate and reset to the initial angle, so that the counterweight block 45 in the inclined state is turned into a vertical state, and the first electromagnetic block 414 mutually adsorbs the second electromagnetic block 415, thereby limiting the counterweight block 45.

[0060] The driving plate 48 is driven to slide by the round handle 39, and the push block 49 of the driving plate 48 pushes the bottom shaft 46, and the bottom shaft 46 drives the top shaft 44 to rotate around the axial direction of the rotating shaft 43, and the top shaft 44 drives the counterweight block 45 from a vertical state to an inclined state. At this time, a swing force is generated when the counterweight block 45 turns to an inclined state, and the drone body 10 is affected by the change in the position of the counterweight block 45, so that the center of gravity of the drone body 10 changes, so that the elastic support foot 24 on the other side of the drone body 10 drops to contact the ground, accelerating the elastic support foot 24 on the other side of the drone body 10 to move downward against the apron surface, thereby improving the stability of the drone body 10.

[0061] So far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

Claims

1. A bridge inspection drone frame, comprising a drone body (10), wherein the drone body (10) is provided with wings (11); A shock absorbing assembly (20), the shock absorbing assembly (20) being arranged at the bottom of the drone body (10), the shock absorbing assembly (20) comprising four bottom blocks (21) mounted at the bottom of the drone body (10), each of the bottom blocks (21) having an inner cavity, a first circular hole (22) being opened at the bottom of the four bottom blocks (21), a cylinder (23) being slidably connected to the inside of each of the first circular holes (22), the bottoms of every two of the cylinders (23) being fixedly connected to the same elastic foot (24), a fixing plate (25) being fixed on the inner cavity wall of each bottom block (21), and gas being filled between the bottom of the fixing plate (25) and the inner cavity bottom wall of the bottom block (21); A negative pressure assembly (30) is arranged on the bottom block (21), and comprises a plurality of lifting columns (31) respectively arranged inside the cylinder (23), a bottom of each lifting column (31) is fixed with a chassis (310), and an inner wall of each cylinder (23) is provided with an annular groove (311) adapted to the chassis (310).

2. A bridge inspection drone frame according to claim 1, characterized in that: A first return spring (26) is fixed to the bottom of each fixed plate (25), and the bottom of the first return spring (26) is fixed to the top of the corresponding cylinder (23). An annular plate (27) is fixed to the outer wall of each cylinder (23), and an elastic member (28) is fixed to the top of each annular plate (27).

3. The bridge inspection drone frame according to claim 1 is characterized in that: Each of the fixing plates (25) is provided with a second circular hole (32) adapted to the lifting column (31); the lifting column (31) is slidably connected inside the corresponding second circular hole (32); the outer surface of the lifting column (31) is in contact with the inner wall of the second circular hole (32); and two symmetrical first linkage columns (33) are fixed on the surface of each of the lifting columns (31).

4. A bridge inspection drone frame according to claim 3, characterized in that: An end plate (34) is arranged on the upper side of each fixed plate (25), and two symmetrical triangular blocks (35) are fixed on one side of each end plate (34), and each triangular block (35) corresponds to a first linkage column (33), and the bottom end of the triangular block (35) has an arc surface, and the initial position of the first linkage column (33) is located at the arc surface of the corresponding triangular block (35).

5. The bridge inspection drone frame according to claim 4 is characterized in that: Each of the bottom blocks (21) is provided with a third circular hole (36), and the third circular hole (36) is communicated with the inner cavity of the bottom block (21). A sliding column (37) is slidably connected to the interior of each of the third circular holes (36). The outer surface of the sliding column (37) fits with the inner wall of the third circular hole (36). One end of the sliding column (37) is fixed to a side wall of the corresponding end plate (34). A round handle (39) is fixed to the end of each of the sliding columns (37) away from the corresponding bottom block (21).

6. The bridge inspection drone frame according to claim 5 is characterized in that: A second return spring (38) is fixed between the side of each round handle (39) facing the corresponding bottom block (21) and the bottom block (21) for supporting the round handle (39).

7. The bridge inspection drone frame according to claim 6 is characterized in that: A center of gravity adjustment component (40) is arranged on the bottom block (21), and the center of gravity adjustment component (40) includes a connecting plate (41) fixed between the four bottom blocks (21), two side plates (42) are fixed on the top of the connecting plate (41), a top shaft (44) is arranged between the two side plates (42), two symmetrical rotating shafts (43) are fixed on the outer wall of the top shaft (44), each rotating shaft (43) corresponds to a side plate (42), one end of the rotating shaft (43) is rotatably connected to a side wall of the corresponding side plate (42), and a counterweight block (45) is fixed on the top of the top shaft (44) for adjusting the center of gravity of the drone body (10).

8. The bridge inspection drone frame according to claim 7 is characterized in that: A bottom shaft (46) is fixed to the bottom of the top shaft (44), a support plate (47) is fixed between the two round handles (39) on the upper side of each elastic support foot (24), a driving plate (48) is fixed to the side of each support plate (47) facing the bottom shaft (46), and a push block (49) is provided on one side of each driving plate (48).

9. The bridge inspection drone frame according to claim 8, characterized in that: A limiting column (410) is fixed on one side of the push block (49) away from the bottom shaft (46); a limiting groove (411) adapted to the limiting column (410) is provided on the inner wall of the driving plate (48); the limiting column (410) is slidably connected inside the limiting groove (411); an outer surface of the limiting column (410) is in contact with the inner wall of the limiting groove (411); a third return spring (412) is fixed between one side of the push block (49) and the corresponding driving plate (48) for supporting the push block (49).

10. The bridge inspection drone frame according to claim 9, characterized in that: An outer ring (413) is fixed on the outer surface of the two rotating shafts (43), a first electromagnetic block (414) is fixed on one side of the two outer rings (413), and a second electromagnetic block (415) is fixed on one side of the two side plates (42).

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