Surveying and mapping device for bridge construction

Abstract

The invention discloses a surveying and mapping device for bridge construction, and relates to the technical field of unmanned aerial vehicle surveying and mapping. Comprising an unmanned aerial vehicle body, a surveying and mapping camera mechanism and a liquid spraying cleaning mechanism are arranged at the bottom of the unmanned aerial vehicle body, the liquid spraying cleaning mechanism comprises a liquid tank, the liquid tank is installed in the unmanned aerial vehicle body, a conveying pump is arranged in the liquid tank, and the output end of the conveying pump is connected with a water supply pipe; the annular rotating seat rotates on the outer wall of one end of the water supply pipe in a sealed mode, an opening is formed in the side face of the end of the water supply pipe, and the water supply pipe communicates with the annular rotating seat through the opening. By arranging the surveying and mapping camera mechanism and the liquid spraying and cleaning mechanism, information can be collected based on the surveying and mapping camera mechanism, and the device can be used for bridge surveying and mapping and inspection work such as collection, and liquid can be supplied to an annular rotating seat through a water supply pipe based on a liquid tank and sprayed out through a spray head when dirt and other conditions are encountered and information is difficult to collect; and the surface of which information needs to be collected is cleaned so as to capture a clearer image.

Description

Technical Field

[0001] The present invention relates to the field of UAV surveying and mapping technology, and in particular to a surveying and mapping device for bridge construction. Background Art

[0002] Accurate and efficient surveying is crucial for the construction, maintenance, and inspection of bridge projects. Traditional bridge surveying relies primarily on manual fieldwork with measuring instruments. This is not only inefficient but also presents significant safety risks and blind spots for complex structures or difficult-to-reach areas, such as the tops of tall piers, under river crossings, and on the surfaces of large stay cables. With the advancement of drone technology, the use of drones in bridge surveying has become an industry trend. They can quickly acquire large-scale image data, significantly improving work efficiency and safety.

[0003] Because bridges are exposed to the outdoors for extended periods, dust, oil, bird droppings, and other contaminants easily accumulate on their surfaces. These stains can obscure key details, blurring captured images and affecting the accuracy of subsequent data analysis, such as crack identification and displacement monitoring. Currently, most drones are equipped only with cameras for imaging and lack on-site cleaning capabilities.

[0004] After searching, the application proposal with Chinese patent application number CN202021209935.8 discloses a bridge inspection drone frame and a bridge inspection drone. The bridge inspection drone frame may include an equipment mounting mechanism, a power unit, an anti-collision mechanism and a tripod mechanism. The power unit includes a plurality of dual-rotor mechanisms, each of which is connected to the equipment mounting mechanism in a horizontal direction through an arm. The anti-collision mechanism includes an anti-collision ring and a plurality of anti-collision struts. The drone in the above-mentioned document has the following shortcomings: although it has the ability to acquire images, it does not have a cleaning function. In situations where detailed features are required, it is easily affected by pollutants. Summary of the Invention

[0005] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a surveying and mapping device for bridge construction.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A surveying and mapping device for bridge construction includes an unmanned aerial vehicle (UAV) main body, a surveying and mapping camera mechanism and a liquid spray cleaning mechanism are provided at the bottom of the UAV main body, and the liquid spray cleaning mechanism includes:

[0008] The liquid tank is installed in the main body of the drone. The liquid tank has a built-in delivery pump, and the output end of the delivery pump is connected to the water supply pipe;

[0009] An annular rotating seat, the annular rotating seat is sealed and rotated on the outer wall of one end of the water supply pipe, and an opening is provided on the side of the end of the water supply pipe, and the water supply pipe is connected to the annular rotating seat through the opening;

[0010] The end frame is installed at one end of the annular rotating base, and multiple end frames are arranged in a circumferential distribution. The end frame is hinged with a nozzle bracket;

[0011] The nozzle is installed in the nozzle bracket, and multiple nozzles are arranged in a circumferential distribution. One end of the nozzle is connected to the inside of the annular rotating seat through a hose;

[0012] Angle adjustment component, which is used to adjust the spray angle of the nozzle;

[0013] The rotation control component is used to control the rotation of the annular rotating seat.

[0014] As a preferred embodiment of the present invention, the angle adjustment assembly includes an annular rotating drum, which is arranged at the bottom of the drone body, and a plurality of guide rails are fixed to one side of the annular rotating drum. The guide rails are arranged in a circumferential distribution, and the spacing between the guide rails gradually increases in the direction away from the annular rotating drum. A slide groove is provided on the guide rail, and a ball head rod is fixed to one side of the nozzle bracket. The end of the ball head rod is a spherical structure adapted to the slide groove, and the end of the ball head rod slides in the slide groove; a fixing frame is installed at the bottom of the drone body, and the fixing frame is connected to the annular rotating drum through a linkage part;

[0015] The rotation control assembly is used to drive the annular drum to rotate, and based on the linkage part, the annular drum is moved in the horizontal direction during the rotation of the annular drum.

[0016] As a preferred embodiment of the present invention: the rotation control component includes a drive motor, the drive motor is installed on a fixed frame, the output end of the drive motor is connected to a drive gear, and evenly distributed convex teeth are provided on the outside of the annular drum. The drive gear is engaged with the convex teeth, and the length of the convex teeth is greater than the translation distance of the annular drum.

[0017] As a preferred embodiment of the present invention: the linkage part includes a spring, one end of the spring is fixed to the fixed frame, and the other end of the spring is connected to the inner cylinder, an annular rotating cavity is provided in the annular rotating cylinder, and the inner cylinder is rotatably installed in the annular rotating cavity of the annular rotating cylinder; a toggle piece is provided in the annular rotating cylinder, and a first L-shaped toggle block is installed on the outside of the inner cylinder, and the first L-shaped toggle block is located on the movement path of the toggle piece; an inner bracket is fixed on the inside of the annular rotating cylinder, and the inner bracket slides on the outer wall of the water supply pipe.

[0018] As a preferred embodiment of the present invention: the driving member includes a slide, the slide slides on the inner wall of the annular drum, a second L-shaped shift block is fixed to one end of the slide, the second L-shaped shift block is located inside the annular drum, the first L-shaped shift block is located on the movement path of the second L-shaped shift block, and the slide and the annular drum are connected by an elastic airbag; an extrusion block is provided at the end of the slide away from the annular drum, an annular guide frame is fixed to the bottom of the drone body, the center of the annular guide frame is adapted to the rotation center of the annular drum, and the inner diameter of the annular guide frame gradually decreases towards the fixed frame.

[0019] As a preferred embodiment of the present invention, an air hole is provided on one side of the elastic airbag.

[0020] As a preferred embodiment of the present invention: a one-way exhaust valve is provided on one side of the elastic airbag.

[0021] As a preferred embodiment of the present invention: the surveying and mapping camera mechanism includes:

[0022] Mounting base, the mounting base is installed on the main body of the drone;

[0023] A mounting frame is rotatably mounted on the mounting base via an axis, and a surveying and mapping camera is installed in the mounting frame;

[0024] An angle adjustment motor is installed on the outer wall of one side of the mounting seat, and the output end of the angle adjustment motor is connected to the shaft of the mounting frame.

[0025] As a preferred embodiment of the present invention, a landing gear is installed at the bottom of the UAV body, the two landing gears are symmetrically arranged, and a buffer cover is detachably installed on the landing gear.

[0026] As a preferred embodiment of the present invention: a mounting groove is provided on the arm of the drone body, a connecting frame is detachably installed in the mounting groove, an annular guard is installed at one end of the connecting frame, and when the connecting frame is installed in the mounting groove, the center of the annular guard is adapted to the rotation center of the drone body rotor.

[0027] The beneficial effects of the present invention are:

[0028] 1. The present invention is capable of collecting information based on the surveying and mapping camera mechanism by providing a surveying and mapping camera mechanism and a liquid spray cleaning mechanism. It can be used for bridge surveying and inspection operations. For example, when encountering dirt and other conditions that make it difficult to collect information, the liquid tank can supply liquid to the annular rotating seat through a water supply pipe, and the liquid is sprayed through a nozzle to clean the surface where information needs to be collected, so as to capture clearer images.

[0029] 2. The present invention is capable of controlling the rotation of the annular drum based on the rotation control component by setting a rotation control component and an angle adjustment component, and synchronously driving the annular rotating seat to rotate by utilizing the cooperation of the guide rail and the ball head rod, so that each nozzle rotates and sprays, thereby increasing the spray range to ensure the cleaning effect.

[0030] 3. In the present invention, during the rotation of the annular drum, the spring will be deformed, thereby changing the distance between the inner drum and the fixed frame, so that the annular drum can translate. Since the guide rail is inclined, it can synchronously drive the ball head rod to move during translation, so that the angle between the nozzle bracket and the end frame changes, thereby achieving the purpose of changing the spraying angle of the nozzle, so that the spraying range of each nozzle is wider, and the cleaning area is expanded.

[0031] 4. The present invention provides an annular guide frame and a slide frame and other structures. When the annular drum moves toward the fixed frame, the annular guide frame can squeeze the extrusion block to make the slide slide toward the inside of the annular drum until the second L-shaped shift block is misaligned with the first L-shaped shift block, so that the inner drum rotates and resets in the annular drum based on the action of the spring. At the same time, the annular drum is pushed in the direction away from the fixed frame based on the action of the spring, thereby realizing the reciprocating motion control of the annular drum; it helps to repeatedly flush the nozzle and improve the cleaning effect.

[0032] 5. The present invention provides a one-way exhaust valve and an air hole, so that when the elastic air bag is squeezed and deformed, the gas inside the elastic air bag can be quickly discharged through the one-way exhaust valve. During the reset process, since the air intake speed of the air hole is slow, the recovery time of the elastic air bag can be delayed, thereby delaying the timing of the second L-shaped shift block and the first L-shaped shift block contacting again, so that the annular drum can have sufficient time to reset. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 This is a schematic structural diagram of a surveying and mapping device for bridge construction proposed by the present invention;

[0034] Figure 2 This is a schematic structural diagram of a surveying and mapping device for bridge construction proposed by the present invention from another angle;

[0035] Figure 3 This is a schematic structural diagram of a liquid spray cleaning mechanism of a surveying and mapping device for bridge construction proposed by the present invention;

[0036] Figure 4 This is a schematic structural diagram of a cross-section of an annular rotating drum of a surveying and mapping device for bridge construction proposed by the present invention;

[0037] Figure 5 This is a schematic structural diagram of a cross-section of a water supply pipe and an annular rotating seat of a surveying and mapping device for bridge construction proposed by the present invention;

[0038] Figure 6This is a structural schematic diagram of the slide and elastic airbag of a surveying and mapping device for bridge construction proposed by the present invention.

[0039] In the figure: 1-UAV body; 2-drive motor; 3-drive gear; 4-landing gear; 5-annular guard; 6-connecting frame; 7-liquid tank; 8-water supply pipe; 9-mounting frame; 10-surveying camera; 11-mounting seat; 12-angle adjustment motor; 13-convex teeth; 14-ball head rod; 15-guide rail; 16-sprinkler; 17-sprinkler bracket; 18-annular rotating drum; 19-extrusion block; 20-annular guide frame; 21-spring; 22-fixing frame; 23-inner bracket; 24-first L-shaped shift block; 25-hose; 26-one-way exhaust valve; 27-end frame; 28-elastic airbag; 29-slide; 30-inner cylinder; 31-annular rotating seat; 32-second L-shaped shift block; 33-air hole. DETAILED DESCRIPTION

[0040] The technical solution of the present invention will be further described in detail below in conjunction with specific implementation methods.

[0041] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0042] Example 1:

[0043] A surveying and mapping device for bridge construction, such as Figure 1-6 As shown, it includes a drone body 1, and a mapping camera mechanism and a liquid spray cleaning mechanism are provided at the bottom of the drone body 1. The liquid spray cleaning mechanism includes:

[0044] Liquid tank 7, which is installed in the drone body 1. Liquid tank 7 has a built-in delivery pump, and the output end of the delivery pump is connected to a water supply pipe 8;

[0045] The annular rotating seat 31 is sealed and rotated on the outer wall of one end of the water supply pipe 8. An opening is provided on the side of the end of the water supply pipe 8, and the water supply pipe 8 is connected to the annular rotating seat 31 through the opening;

[0046] The end frame 27 is installed at one end of the annular rotating base 31. A plurality of end frames 27 are arranged in a circumferential distribution. The nozzle bracket 17 is hingedly connected to the end frame 27.

[0047] The nozzle 16 is installed in the nozzle bracket 17. The multiple nozzles 16 are arranged in a circumferential distribution. One end of the nozzle 16 is connected to the inside of the annular rotating seat 31 through the hose 25.

[0048] An angle adjustment component, which is used to adjust the spray angle of the nozzle 16;

[0049] A rotation control assembly, the rotation control assembly is used to control the rotation of the annular rotating seat 31;

[0050] By setting up a surveying and mapping camera mechanism and a liquid spray cleaning mechanism, information can be collected based on the surveying and mapping camera mechanism, which can be used for bridge surveying and inspection operations. For example, when encountering dirt and other situations, it is difficult to collect information. The liquid can be supplied to the annular rotating seat 31 through the liquid tank 7 through the water supply pipe 8, and sprayed through the nozzle 16 to clean the surface where information needs to be collected, so as to capture clearer images.

[0051] In order to facilitate the adjustment of the spray angle of the nozzle 16; Figure 3 、 Figure 4 As shown, the angle adjustment assembly includes an annular rotating drum 18, which is arranged at the bottom of the drone body 1. A plurality of guide rails 15 are fixed to one side of the annular rotating drum 18. The guide rails 15 are arranged in a circumferential distribution, and the spacing between the guide rails 15 gradually increases in the direction away from the annular rotating drum 18. A slide groove is provided on the guide rail 15. A ball head rod 14 is fixed to one side of the nozzle bracket 17. The end of the ball head rod 14 is a spherical structure adapted to the slide groove, and the end of the ball head rod 14 slides in the slide groove; a fixing frame 22 is installed at the bottom of the drone body 1, and the fixing frame 22 is connected to the annular rotating drum 18 through a linkage portion;

[0052] The rotation control assembly is used to drive the annular drum 18 to rotate, and based on the linkage part, the annular drum 18 is moved in the horizontal direction during the rotation process of the annular drum 18.

[0053] In order to facilitate the driving of the annular drum 18; Figure 4 As shown, the rotation control assembly includes a drive motor 2, which is installed on a fixed frame 22. The output end of the drive motor 2 is connected to a drive gear 3. The outer side of the annular drum 18 is provided with evenly distributed convex teeth 13. The drive gear 3 is engaged with the convex teeth 13. The length of the convex teeth 13 is greater than the translation distance of the annular drum 18.

[0054] In order to facilitate the reciprocating motion of the annular drum 18 in the horizontal direction during the rotation of the annular drum 18; Figure 3 、 Figure 4 、 Figure 5As shown, the linkage portion includes a spring 21, one end of the spring 21 is fixed to a fixing frame 22, and the other end of the spring 21 is connected to an inner cylinder 30. An annular rotating cavity is provided in the annular rotating cylinder 18, and the inner cylinder 30 is rotatably installed in the annular rotating cavity of the annular rotating cylinder 18; a toggle member is provided in the annular rotating cylinder 18, and a first L-shaped toggle block 24 is installed on the outer side of the inner cylinder 30, and the first L-shaped toggle block 24 is located on the movement path of the toggle member; an inner bracket 23 is fixed to the inner side of the annular rotating cylinder 18, and the inner bracket 23 slides on the outer wall of the water supply pipe 8;

[0055] By providing a rotation control component and an angle adjustment component, the annular rotating drum 18 can be controlled to rotate based on the rotation control component. The cooperation between the guide rail 15 and the ball head rod 14 synchronously drives the annular rotating seat 31 to rotate, so that each nozzle 16 rotates and sprays, thereby improving the spray range and ensuring the cleaning effect.

[0056] During the rotation of the annular drum 18, the spring 21 will be deformed, thereby changing the distance between the inner drum 30 and the fixed frame 22, so that the annular drum 18 can be translated. Since the guide rail 15 is inclined, it can synchronously drive the ball head rod 14 to move during translation, so that the angle between the nozzle bracket 17 and the end frame 27 changes, thereby achieving the purpose of changing the spraying angle of the nozzle 16, so that the spraying range of each nozzle 16 covers a wider range, and expands the cleaning area.

[0057] In order to enable the structure to reciprocate; Figure 3-5 As shown, the toggle member includes a slide 29, which slides on the inner wall of the annular drum 18, and a second L-shaped toggle block 32 is fixed to one end of the slide 29. The second L-shaped toggle block 32 is located inside the annular drum 18, and the first L-shaped toggle block 24 is located on the movement path of the second L-shaped toggle block 32. The slide 29 and the annular drum 18 are connected by an elastic airbag 28; an extrusion block 19 is provided at one end of the slide 29 away from the annular drum 18, and an annular guide frame 20 is fixed to the bottom of the drone body 1, the center of the annular guide frame 20 is adapted to the rotation center of the annular drum 18, and the inner diameter of the annular guide frame 20 gradually decreases towards the direction close to the fixed frame 22;

[0058] By providing structures such as the annular guide frame 20 and the slide 29, during the movement of the annular drum 18 toward the fixed frame 22, the annular guide frame 20 can be used to squeeze the extrusion block 19, so that the slide 29 slides toward the inside of the annular drum 18 until the second L-shaped shift block 32 is misaligned with the first L-shaped shift block 24, so that the inner drum 30 rotates and resets in the annular drum 18 based on the force of the spring 21, and at the same time, the annular drum 18 is pushed in the direction away from the fixed frame 22 based on the force of the spring 21, thereby realizing the reciprocating motion control of the annular drum 18; this helps the nozzle 16 to perform repeated flushing and improve the cleaning effect.

[0059] In order to better reset the annular drum 18; Figure 6 As shown, an air hole 33 is opened on one side of the elastic airbag 28 .

[0060] In order to better reset the annular drum 18; Figure 6 As shown, a one-way exhaust valve 26 is provided on one side of the elastic airbag 28;

[0061] By providing the one-way exhaust valve 26 and the air hole 33, the gas inside the elastic air bag 28 can be quickly discharged through the one-way exhaust valve 26 when the elastic air bag 28 is squeezed and deformed. During the reset process, since the air intake speed of the air hole 33 is slow, the recovery time of the elastic air bag 28 can be delayed, thereby delaying the timing of the second L-shaped shift block 32 and the first L-shaped shift block 24 contacting again, so that the annular drum 18 can have sufficient time to reset.

[0062] In order to collect information such as images and terrain; Figure 1 、 Figure 2 As shown, the surveying and mapping camera mechanism includes:

[0063] Mounting seat 11, the mounting seat 11 is installed on the drone body 1;

[0064] The mounting frame 9 is rotatably mounted on the mounting base 11 through an axis, and a surveying camera 10 is installed in the mounting frame 9;

[0065] Angle adjustment motor 12, the angle adjustment motor 12 is installed on the outer wall of one side of the mounting base 11, and the output end of the angle adjustment motor 12 is connected to the shaft of the mounting bracket 9;

[0066] Among them, the mounting bracket 9 can be driven to rotate based on the angle adjustment motor 12 to adjust the structural angle. The mounting seat 11 can be horizontally rotated on the drone body 1, and a horizontal adjustment motor is provided in the drone body 1 to drive the mounting seat 11 to rotate; the specific method of collecting images and terrain information of the surveying and mapping camera 10 can refer to the existing technology, because it is not the core content of the present invention, it will not be repeated.

[0067] In order to facilitate take-off and landing; Figure 1 、 Figure 2 As shown, a landing gear 4 is installed at the bottom of the UAV body 1, and two landing gears 4 are symmetrically arranged. A buffer cover is detachably installed on the landing gear 4.

[0068] Example 2:

[0069] A surveying and mapping device for bridge construction, such as Figure 1As shown, in order to protect the rotor of the drone body 1, this embodiment makes the following improvements on the basis of Example 1: a mounting groove is provided on the arm of the drone body 1, a connecting frame 6 is detachably installed in the mounting groove, and an annular guard 5 is installed at one end of the connecting frame 6. When the connecting frame 6 is installed in the mounting groove, the center of the annular guard 5 is adapted to the rotation center of the rotor of the drone body 1;

[0070] By providing structures such as the connecting frame 6 and the annular guard frame 5, the rotor can be protected to a certain extent when the UAV passes through narrow places, such as bridge holes, thereby improving reliability.

[0071] For the parts that are not disclosed in detail in the present invention, those skilled in the art can ensure that the solutions of the present invention are successfully implemented based on common sense, normal thinking logic and existing technologies.

[0072] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A surveying and mapping device for bridge construction, characterized in that: The invention comprises an unmanned aerial vehicle (UAV) main body (1), wherein a mapping camera mechanism and a liquid spray cleaning mechanism are provided at the bottom of the UAV main body (1), and the liquid spray cleaning mechanism comprises: A liquid tank (7), the liquid tank (7) is installed in the drone body (1), the liquid tank (7) has a built-in delivery pump, and the output end of the delivery pump is connected to a water supply pipe (8); An annular rotating seat (31) is sealed and rotated on the outer wall of one end of the water supply pipe (8), an opening is provided on the side surface of the end of the water supply pipe (8), and the water supply pipe (8) is connected to the annular rotating seat (31) through the opening; An end frame (27) is mounted on one end of the annular rotating seat (31), and a plurality of end frames (27) are arranged in a circumferential distribution. A nozzle bracket (17) is hingedly connected to the end frame (27); A nozzle (16), the nozzle (16) is installed in a nozzle bracket (17), and a plurality of nozzles (16) are arranged in a circumferential distribution, and one end of the nozzle (16) is connected to the inside of the annular rotating seat (31) through a hose (25); An angle adjustment component, the angle adjustment component is used to adjust the spray angle of the nozzle (16); A rotation control component is used to control the rotation of the annular rotating seat (31).

2. A surveying and mapping device for bridge construction according to claim 1, characterized in that: The angle adjustment assembly includes an annular rotating drum (18), which is arranged at the bottom of the drone body (1), and a plurality of guide rails (15) are fixed on one side of the annular rotating drum (18), the guide rails (15) are arranged in a circumferential distribution, and the spacing between the guide rails (15) gradually increases in the direction away from the annular rotating drum (18), and a slide groove is provided on the guide rail (15). A ball head rod (14) is fixed on one side of the nozzle bracket (17), and the end of the ball head rod (14) is a spherical structure adapted to the slide groove, and the end of the ball head rod (14) slides in the slide groove; a fixing frame (22) is installed at the bottom of the drone body (1), and the fixing frame (22) is connected to the annular rotating drum (18) through a linkage part; The rotation control assembly is used to drive the annular drum (18) to rotate, and based on the linkage part, the annular drum (18) is moved in the horizontal direction during the rotation of the annular drum (18).

3. A surveying and mapping device for bridge construction according to claim 2, characterized in that: The rotation control assembly comprises a drive motor (2), which is mounted on a fixed frame (22). The output end of the drive motor (2) is connected to a drive gear (3). The outer side of the annular rotating drum (18) is provided with evenly distributed convex teeth (13). The drive gear (3) is meshed with the convex teeth (13). The length of the convex teeth (13) is greater than the translation distance of the annular rotating drum (18).

4. A surveying and mapping device for bridge construction according to claim 3, characterized in that: The linkage part includes a spring (21), one end of the spring (21) is fixed on a fixing frame (22), and the other end of the spring (21) is connected to an inner cylinder (30). An annular rotating cavity is provided in the annular rotating cylinder (18), and the inner cylinder (30) is rotatably installed in the annular rotating cavity of the annular rotating cylinder (18); a toggle member is provided in the annular rotating cylinder (18), and a first L-shaped toggle block (24) is installed on the outer side of the inner cylinder (30), and the first L-shaped toggle block (24) is located on the movement path of the toggle member; an inner bracket (23) is fixed on the inner side of the annular rotating cylinder (18), and the inner bracket (23) slides on the outer wall of the water supply pipe (8).

5. A surveying and mapping device for bridge construction according to claim 4, characterized in that: The shifting member comprises a slide (29), the slide (29) slides on the inner wall of the annular rotating cylinder (18), a second L-shaped shifting block (32) is fixed to one end of the slide (29), the second L-shaped shifting block (32) is located inside the annular rotating cylinder (18), the first L-shaped shifting block (24) is located on the movement path of the second L-shaped shifting block (32), and the slide (29) and the annular rotating cylinder (18) are connected by an elastic airbag (28); an extrusion block (19) is provided at one end of the slide (29) away from the annular rotating cylinder (18), and an annular guide frame (20) is fixed to the bottom of the drone body (1), the center of the annular guide frame (20) is adapted to the rotation center of the annular rotating cylinder (18), and the inner diameter of the annular guide frame (20) gradually decreases toward the direction close to the fixed frame (22).

6. A surveying and mapping device for bridge construction according to claim 5, characterized in that: An air hole (33) is provided on one side of the elastic air bag (28).

7. A surveying and mapping device for bridge construction according to claim 6, characterized in that: A one-way exhaust valve (26) is provided on one side of the elastic airbag (28).

8. A surveying and mapping device for bridge construction according to claim 1, characterized in that: The surveying and mapping camera mechanism comprises: A mounting seat (11), the mounting seat (11) is mounted on the drone body (1); A mounting frame (9), the mounting frame (9) is rotatably mounted on the mounting seat (11) via an axis, and a surveying and mapping camera (10) is installed in the mounting frame (9); An angle adjustment motor (12) is installed on an outer wall of one side of the mounting seat (11), and an output end of the angle adjustment motor (12) is connected to the shaft of the mounting frame (9) in a transmission manner.

9. A surveying and mapping device for bridge construction according to claim 1, characterized in that: A landing gear (4) is installed at the bottom of the drone body (1), and the two landing gears (4) are symmetrically arranged. A buffer cover is detachably installed on the landing gear (4).

10. A surveying and mapping device for bridge construction according to claim 1, characterized in that: The arm of the drone body (1) is provided with a mounting groove, a connecting frame (6) is detachably mounted in the mounting groove, an annular guard (5) is mounted on one end of the connecting frame (6), and when the connecting frame (6) is mounted in the mounting groove, the center of the annular guard (5) is adapted to the rotation center of the rotor of the drone body (1).

Images