Building wall flaw detection device and detection method

Abstract

The invention provides a building wall flaw detection device and detection method, and belongs to the technical field of building flaw detection, the device comprises an unmanned aerial vehicle, a flaw detection probe is arranged at the front end of the unmanned aerial vehicle, a push rod is arranged at the bottom of the unmanned aerial vehicle, a storage part comprises a storage barrel, a turntable is arranged in the storage barrel, a limiting barrel is arranged on the storage barrel, the circle center of the limiting barrel is located on the outer side of the turntable, and a spring is arranged on the inner bottom surface of the limiting barrel; a pigment bottle with a downward opening is arranged at the upper end of the box body, and a separation sheet is arranged at the opening of the pigment bottle; the marking part comprises a guide pipe, a guide cylinder is vertically arranged on the guide pipe, the upper end of the guide cylinder is inserted into the through hole, and a marking piece is movably arranged in the guide pipe in the length direction and obtains the temporarily stored pigment for marking. The method comprises the step that the building wall flaw detection device is used for flaw detection, the scheme provided by the invention is suitable for high buildings, meanwhile, the coating can be divided into multiple parts, the coating bottle can be automatically replaced, the coating which is not used can be sealed in time, and the coating performance change rate is reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of building flaw detection, and in particular relates to a building wall flaw detection device and a detection method. Background Art

[0002] Building wall flaw detection is not only to ensure the safety and stability of the building, but also to facilitate and optimize daily maintenance and management to protect the lives and property of residents.

[0003] The existing building wall flaw detection device has a complex structure. When the building to be detected is high, it needs to rely on rope lifting and has poor stability. Therefore, drones are often used to place the paint required for marking in the same storage box and then mount it on the drone, exposing all the paint to the air for a long time, causing the paint to evaporate quickly and dry easily, affecting the spraying effect and wasting paint. Summary of the invention

[0004] In order to solve the above-mentioned deficiencies in the prior art, the present invention provides a building wall flaw detection device and detection method, which is not only suitable for buildings with high heights, but also can divide the paint into multiple portions, and can automatically replace the paint bottle, and can promptly seal the unused paint, thereby reducing the rate of change of the paint performance.

[0005] In order to achieve the purpose of the present invention, the following scheme is proposed: A building wall flaw detection device includes a drone, a flaw detection probe is provided at the front end of the drone, and a push rod is vertically provided at the bottom of the drone. The device also includes: The material storage part includes a material storage barrel arranged at the bottom of the drone, a through hole corresponding to the push rod is arranged at the bottom of the material storage barrel, a turntable is arranged coaxially in the material storage barrel, and a limiting barrel is arranged in a circular array on the material storage barrel, the center of gravity of the limiting barrel is located outside the turntable, and the distance between the center of the limiting barrel and the center of the turntable is consistent with the distance from the center of the through hole to the center of the bottom of the material storage barrel. A spring is arranged on the bottom surface of the limiting barrel, and a paint bottle with an opening facing downward is vertically inserted at the upper end thereof, and a baffle is arranged at the opening of the paint bottle, and the size of the baffle is smaller than the size of the through hole; The marking part includes a guide tube horizontally arranged below the storage barrel, a guide tube vertically arranged on the guide tube, and an upper end of the guide tube is inserted into the through hole for obtaining pigment from the pigment bottle and temporarily storing it. A marking piece is movable along the length direction in the guide tube for opening the guide tube and obtaining the temporarily stored pigment for marking.

[0006] Furthermore, a spike portion is provided at the opening of the upper end of the guide tube and is inserted into the through hole. The upper end of the spike portion is inclined, and the lower end of the guide tube extends into the guide tube. The bottom of the guide tube is provided with discharge holes in a circular array, and a sealing plug is rotatably provided at the center of the bottom of the guide tube. The top surface of the sealing plug is provided with rubber plugs corresponding to the discharge holes one by one. One side of the sealing plug and one side of the bottom of the guide tube are provided with tension springs. The bottom surface of the sealing plug is provided with a receiving groove, and the receiving groove is provided with a guide pin. The upper end of the guide pin is rotatably connected to the receiving groove. The marking part includes a moving seat with an inverted L-shaped structure, and the top surface of the horizontal part of the moving seat is provided with an inclined groove for pushing the lower end of the guide pin to open the discharge hole. A U-shaped groove is provided on one side of the inclined groove, and the rear end of the inclined groove faces the U-shaped groove. The opening of the U-shaped groove faces the outlet end of the guide tube, and a sponge pad is provided at the inner right angle of the moving seat for absorbing the paint in the U-shaped groove.

[0007] Furthermore, the upper end of the push rod is connected to the movable end of the first cylinder vertically arranged inside the UAV, and a push plate is provided at the lower end of the push rod. The outer dimensions of the push plate are smaller than the inner diameter of the limiting cylinder. The upper end of the storage cylinder is provided with a convex edge extending inwardly thereof. A rotating shaft is connected to the center of the turntable, and a motor is provided at the upper end of the rotating shaft. The motor is arranged in the UAV, and a pressure plate is provided on the upper spiral sleeve of the rotating shaft. The spacing between the pressure plate and the convex edge is greater than the outer diameter of the push plate.

[0008] Furthermore, an annular seat is provided inside the bottom surface of the storage barrel, the through hole is located on the inner side of the annular seat, the top of the annular seat is recessed with an annular groove, a cylindrical roller is provided in the annular groove, and the cylindrical roller is in rolling contact with the bottom of the limiting barrel.

[0009] Furthermore, positioning pins are arranged in a circular array on the turntable, an annular plate is arranged at the bottom of the limiting cylinder, a connecting hole is arranged on the annular plate, the connecting hole is adapted to the positioning pins, and the lower end of the spring is arranged on the annular plate.

[0010] Furthermore, the spring is a cylindrical structure, and the inner wall size of the spring is larger than the inner diameter of the annular plate.

[0011] Furthermore, a sleeve is sleeved on the outer wall of the guide pin, and the width of the inclined groove matches the outer diameter of the sleeve.

[0012] Furthermore, a strip platform is provided on one side of the U-shaped groove, one side of the strip platform is flush with the opening of the U-shaped groove, the front end of the inclined groove is connected to one side of the strip platform, the rear end of the inclined groove is connected to the other side of the strip platform, and the rear end of the inclined groove is inclined toward the U-shaped groove.

[0013] Furthermore, a mounting plate is provided at the other end of the guide tube, a second cylinder is provided on the mounting plate, an output end of the second cylinder is connected to the outer side of the vertical portion of the movable seat, support plates are vertically provided on both sides of the mounting plate, and the upper end of the support plate is connected to the drone.

[0014] A building wall flaw detection method, using the building wall flaw detection device, comprises the following steps: S1. Put the paint bottles into the corresponding limiting cylinders in sequence, and insert the openings of the paint bottles downward into the upper ends of the springs corresponding to the limiting cylinders; S2, start the push rod and move it vertically downward, so that the upper end of the guide tube is inserted into the through hole, and the pigment is obtained from the pigment bottle and temporarily stored; S3. Start the drone and simultaneously start the flaw detection probe to detect and inspect the building wall. When a defect is found, the drone flies in place and starts the marking part to move along the guide tube to open the lower end of the guide tube and obtain the temporarily stored pigment to mark the defect.

[0015] The beneficial effects of the present invention are: The paint is loaded into paint bottles respectively, which facilitates the preservation of the paint and prevents the paint from evaporating and aging. When in use, they can be opened one by one, and the opened paint flows into the guide tube for sealed temporary storage. When marking, the guide pin is pushed through the inclined groove to open the guide tube to allow part of the paint to flow out. When the guide pin moves over the inclined groove, the discharge hole at the bottom of the guide tube is automatically closed under the action of the tension spring, and the paint flowing out of the paint bottle can still be temporarily sealed in the guide tube, thereby minimizing the rate of change of the physical and chemical properties of the paint. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings described herein are for illustrative purposes only of selected embodiments and not all possible implementations, and are not intended to limit the scope of the present invention.

[0017] Figure 1 A schematic diagram of the external structure of the present application is shown.

[0018] Figure 2 A schematic cross-sectional view along the length direction of the guide tube of the present application is shown.

[0019] Figure 3 This application shows Figure 2 A local enlarged schematic diagram of point A.

[0020] Figure 4 This application shows Figure 2 A partial enlarged schematic diagram of point B.

[0021] Figure 5 The overall structural schematic diagram of the material storage barrel of the present application is shown.

[0022] Figure 6 A schematic diagram of the three-dimensional structure of the guide tube and the marking member of the present application is shown.

[0023] Figure 7 A schematic diagram of the bottom structure of the sealing plug of the present application is shown.

[0024] Figure 8A schematic diagram of the top structure of the sealing plug of the present application is shown.

[0025] Fig. 9 A schematic diagram of the three-dimensional structure of the marking element of the present application is shown.

[0026] Markings in the figure: UAV-1, flaw detection probe-11, push rod-12, first cylinder-121, push plate-122, material storage part-2, material storage cylinder-21, through hole-211, convex edge-212, annular seat-213, annular groove-214, cylindrical roller-215, vertical plate-216, turntable-22, rotating shaft-221, motor-222, pressure plate-223, positioning pin-224, limit cylinder-23, annular plate-231, spring-24, paint bottle -25, baffle plate -251, marking part -3, guide tube -31, guide tube -32, spike part -321, discharge hole -322, sealing plug -33, rubber plug -331, accommodating groove -332, guide pin -333, sleeve -334, tension spring -34, marking part -35, moving seat -351, inclined groove -352, U-shaped groove -353, sponge pad -354, strip table -355, mounting plate -36, support plate -361, second cylinder -37. DETAILED DESCRIPTION

[0027] To make the objectives, technical solutions and advantages of the embodiments of the present invention more clear, the implementation modes of the present invention are described in detail below with reference to the accompanying drawings. However, the embodiments described in the present invention are only part of the embodiments of the present invention, rather than all the embodiments.

[0028] Example 1 like Figure 1-Figure 9 As shown, this embodiment provides a building wall flaw detection device, which is used for building wall flaw detection and marking the locations of defects to facilitate workers to handle. The device includes: a drone 1, a material storage part 2, and a marking part 3 arranged in sequence from top to bottom.

[0029] like Figure 1-Figure 5 As shown, a flaw detection probe 11 is provided at the front end of the drone 1 for detecting defects in building walls.

[0030] A push rod 12 is vertically provided at the bottom of the drone 1 , the upper end of the push rod 12 is connected to the first cylinder 121 , and the lower end is connected to the push plate 122 .

[0031] The material storage part 2 includes a material storage cylinder 21 , a rotating disk 22 , a limiting cylinder 23 , a spring 24 , and a paint bottle 25 .

[0032] The material storage barrel 21 is arranged at the bottom of the drone 1, and the top surface of the material storage barrel 21 and the bottom of the drone 1 have a predetermined distance, the bottom surface of the material storage barrel 21 is provided with a through hole 211, and the through hole 211 corresponds to the center of the push plate 122, and the inner bottom surface of the material storage barrel 21 is concentrically provided with an annular seat 213, the outer wall of the annular seat 213 is consistent with the inner wall diameter of the material storage barrel 21, and the top of the annular seat 213 is recessed downward to provide an annular groove 214, and a cylindrical roller 215 is provided in the annular groove 214; the top of the material storage barrel 21 is provided with a convex edge 212 protruding inwardly, and vertical plates 216 are respectively provided on both sides of the outer wall of the material storage barrel 21, and the upper ends of the vertical plates 216 are respectively connected to the two sides of the bottom surface of the drone 1, and the lower ends are connected to the bottom of the outer wall of the material storage barrel 21.

[0033] The turntable 22 is concentrically arranged in the material storage barrel 21, and a rotating shaft 221 is vertically arranged on the top surface of the turntable 22. The upper end of the rotating shaft 221 passes through the drone 1 to connect to the motor 222. The motor 222 is installed in the drone 1. The bottom surface of the drone 1 and the top of the material storage barrel 21 have a predetermined distance. A pressure plate 223 is threadedly engaged on the rotating shaft 221. The pressure plate 223 is coaxially arranged with the rotating shaft 221. Positioning pins 224 are arranged in a circular array on the turntable 22.

[0034] The limiting cylinder 23 is arranged in the material storage cylinder 21, and the inner diameter of the limiting cylinder 23 is larger than the outer wall size of the push plate 122, and an annular plate 231 is provided at the bottom of the limiting cylinder 23, and a connecting hole matching the positioning pin 224 is provided on the annular plate 231, so that each positioning pin 224 is inserted into a limiting cylinder 23, and the outer walls of two adjacent limiting cylinders 23 abut against each other, so that the limiting cylinders 23 are arranged on the turntable 22 in a circular array, and the center of the annular plate 231 is located between the outer side of the turntable 22 and the inner wall of the material storage cylinder 21, and the center of the distribution trajectory of the annular plate 231 is tangent to the line connecting the center of the push plate 122 and the center of the through hole 211.

[0035] The spring 24 is disposed in the limiting tube 23 , and the lower end of the spring 24 is connected to the top surface of the annular plate 231 . The spring 24 is cylindrical in structure, and its inner diameter is larger than that of the annular plate 231 .

[0036] The paint bottle 25 is used to store paint. The mouth of the paint bottle 25 has an inverted cone structure and is provided with a baffle 251 at the mouth of the bottle. The baffle 251 is made of puncturable aluminum foil. When in use, the mouth of the paint bottle 25 is facing downward and is vertically inserted into the corresponding limiting cylinder 23 along the upper end of the spring 24.

[0037] like Figure 2-Figure 4 As shown, the marking part 3 includes a guide tube 31, a guide tube 32, a sealing plug 33, a tension spring 34, a marking member 35, a mounting plate 36, and a second cylinder 37. The guide tube 31 is horizontally arranged below the storage barrel 21 along the length direction of the UAV. For the convenience of installation, the guide tube 31 is arranged to be a pipe with a rectangular cross-section.

[0038] The guide tube 32 is vertically arranged above the guide tube 31 and is connected to the guide tube 31. The axis of the guide tube 32 is colinear with the axis of the through hole 211. A spike portion 321 is provided on the top of the guide tube 32. The spike portion 321 extends vertically upward into the through hole 211 and is used to pierce the baffle plate 251 when the paint bottle 25 moves vertically downward to allow the paint to flow out along the guide tube 32.

[0039] like Figure 6-Figure 8 As shown, the bottom of the guide tube 32 is sealed, and discharge holes 322 are arranged in a circular array at the bottom of the guide tube 32. The sealing plug 33 is an annular structure, and has ribs in a radial array. A rubber plug 331 is provided at the top of one end of each rib, and the rubber plug 331 corresponds to the discharge holes 322 one by one, and is used to seal the discharge holes 322. A receiving groove 332 is provided on the bottom surface of the sealing plug 33. The length direction of the receiving groove 332 is parallel to the length direction of the guide tube 31. A guide pin 333 is vertically provided on the receiving groove 332 toward the outlet end of the guide tube 31, and the upper end of the guide pin 333 is rotatably connected to the inner walls of both sides of the receiving groove 332.

[0040] A first connecting pin is vertically provided at the bottom of the guide tube 32, and a second connecting pin is vertically provided on one side of the sealing plug 33 corresponding to the rotation axis of the guide groove 333, and the second connecting pin is located in front of the first connecting pin, and both ends of the tension spring 34 are respectively connected to the first connecting pin and the second connecting pin.

[0041] like Fig. 9 As shown, the marking member 35 is arranged in the guide tube 31, and the marking member 35 includes a moving seat 351, a sponge pad 354, and a strip table 355. The moving seat 351 is an inverted L-shaped structure, and the sponge pad 354 is arranged at the inner right angle of the moving seat 351, and the sponge pad 354 protrudes outward by a predetermined length, so that the left and right sides and the bottom surface of the sponge pad 354 are respectively abutted against the left and right sides and the inner bottom surface corresponding to the guide tube 31. A U-shaped groove 353 is provided on the top surface of the horizontal part of the moving seat 351, and the opening of the U-shaped groove 353 faces the outlet end of the guide tube 31, and the length of the two arms of the U-shaped groove 353 is consistent with the top width of the moving seat 351, and one side arm of the U-shaped groove 353 is flush with one side of the horizontal part of the moving seat 351. A strip platform 355 is vertically provided on one side of the other arm of the U-shaped groove 353, one side of the strip platform 355 is flush with the opening of the U-shaped groove 353, an inclined groove 352 is provided on the strip platform 355, and the inclined groove 352 passes through the top surface of the strip platform 355, one end of the inclined groove 352 corresponds to the lower end of the guide pin 333, and the other end extends toward the U-shaped groove 353. The width of the strip platform 355 is consistent with the distance required for the rubber stopper 331 to move away from the discharge hole 322.

[0042] Preferably, the opening width of the U-shaped groove 353 is consistent with the diameter of the distribution trajectory of the discharge holes 322, thereby preventing the paint from flowing out of a position other than the opening direction of the U-shaped groove 353, thereby saving costs.

[0043] like Figure 2 , Figure 4 As shown, the mounting plate 36 is disposed at the other end of the guide tube 31, and upwardly extending support plates 361 are respectively provided on both sides of the mounting plate 36, and the upper part of the support plate 361 is connected to the drone. The second cylinder 37 is disposed on the mounting plate 36, and the output end of the second cylinder 37 extends into the guide tube 31 and is connected to the vertical part of the movable seat 351.

[0044] Specific assembly process: Install the spring 24 into the limiting cylinder 23, and insert the paint bottle 25 with the opening facing downward into the limiting cylinder 23 along the axis of the spring 24. Vertically install the limiting cylinder 23 with the spring 24 and the paint bottle 25 on the turntable 22. During installation, the connecting hole on the annular plate 231 is vertically inserted along the positioning pin 224.

[0045] In such Figure 5 The vertical plates 216 are symmetrically installed on the outside of the material storage barrel 21 on both sides of the through hole 211 and the center line of the material storage barrel 21 shown, and then the material storage barrel 21 is vertically upward along the bottom of the turntable 22, and the upper end of the vertical plate 216 is connected to the drone 1, so as to fix the material storage barrel 21 and make the cylindrical roller 215 abut against the bottom of the limiting barrel 23, which not only improves the stability of the limiting barrel 23, but also reduces the friction between the limiting barrel 23 and the material storage barrel 21.

[0046] The pressure plate 223 is rotated downward vertically along the axis of the rotating shaft 221 so that the pressure plate 223 presses the upward end of the paint bottle 25, so that the paint cylinder 25 maintains a certain pressure, thereby improving the stability of the paint bottle 25 in the limiting cylinder 23. It should be noted that: the distance between the outer wall of the pressure plate 223 and the inner wall of the convex edge 212 on the storage cylinder 21 is greater than the outer size of the push plate 122, so that when the push plate 122 pushes the paint bottle 25 vertically downward, it can move vertically freely to avoid interference.

[0047] The sealing plug 33 is installed into the bottom of the guide tube 32, and the center of the sealing plug 33 is rotatably connected to the center of the bottom of the guide tube 32, the rubber plug 331 is inserted into the corresponding discharge hole 322, and the two ends of the tension spring 34 are respectively connected to the first connecting pin and the second connecting pin, and ensure that the second connecting pin is located in front of the first connecting pin, and a rotating pin is vertically passed through the upper end of the guide pin 333, and the two ends of the rotating pin are respectively connected to the two sides of the accommodating groove 332, and the axis of the rotating pin is perpendicular to the axis of the second connecting pin, and a sleeve 334 is rotatably provided on the outer wall of the guide pin 333, so as to reduce the friction between the guide pin 333 and the inclined groove 352.

[0048] A mounting hole is provided in the middle of the top of the guide tube 31, and the guide tube 32 is vertically installed into the top of the guide tube 31 along the mounting hole. The spike portion 321 is extended into the through hole 211 along the through hole 211, and the outer walls of both sides of the guide tube 31 are connected to the lower end of the vertical plate 261, and the vertical portion of the movable seat 351 is connected to the output end of the second cylinder 37, and the side where the sponge pad 354 is located faces the outlet end of the guide tube 31, and is inserted into the guide tube 31, so that the top surface of the support plate 361 is connected to the drone.

[0049] Specific usage process: Start the drone 1 and the flaw detection device, so that the flaw detection probe 11 detects the building wall. When a defect is detected, the flaw detection probe 11 returns the detection information to the control module and returns it to the remote control end through the communication unit to start the motor 222, so that the motor 222 drives the turntable 22 to rotate. Figure 2-Figure 3 As shown, one of the limit cylinders 23 is rotated to the position directly below the push plate 122, and the first cylinder 121 is started to push the push rod 12 vertically downward, so that the push plate 122 pushes the paint bottle 25 vertically downward, so that the lower end of the paint bottle 25 passes through the center of the annular plate 231 and extends into the through hole 211, so that the spike portion 321 pierces the baffle plate 251. The upper end of the spike portion 321 is inclined, which not only makes it easy to pierce the baffle plate 251, but also facilitates the paint to flow into the guide cylinder 32.

[0050] Start the second cylinder 37 so that the second cylinder 37 slowly pushes the movable seat 351 to move along the length direction of the guide tube 31. The guide pin 333 moves with the movable seat 351 under the action of the inclined groove 352, so that the sealing plug 33 rotates, thereby moving the rubber plug 331 out of the corresponding discharge hole 322, so that the pigment flows into the U-shaped groove 353 on the top surface of the movable seat 351, and then the pigment flows into the sponge pad 354 along the opening of the U-shaped seat 352. At this time, the tension spring 34 is stretched.

[0051] In order to reduce the friction between the guide pin 333 and the inclined groove 352 , a sleeve 334 is provided on the outer shell of the guide pin 333 , so that when the movable seat 351 moves, the sleeve 334 rotates in the inclined groove 352 .

[0052] When the sleeve 334 moves out of the chute 352, the sealing plug 33 is reset under the action of the tension spring 34, so that the rubber plug 331 re-enters the corresponding discharge hole 322. The sponge pad 354 is moved out to a predetermined length at the outlet end of the guide tube 31 under the push of the second cylinder 37, and the wall surface with defects is marked to facilitate workers to handle.

[0053] After marking, the second cylinder 37 enters the return stroke, and the guide pin 333 is pushed into the accommodating groove 332 under the action of the strip table 355, so that the movable seat 351 is avoided when the movable seat 351 is reset. When the movable seat 351 is reset, the guide groove 333 automatically resets to a vertical state under the action of gravity.

[0054] Example 2 A building wall flaw detection method, using the building wall flaw detection device described in Example 1, comprises the following steps: S1. Insert the paint bottles 25 into the corresponding limiting cylinders 23 in sequence, and insert the openings of the paint bottles 25 vertically downward into the upper ends of the springs 24 corresponding to the limiting cylinders 23; S2, start the push rod 12 to move vertically downward, thereby pushing the lower end of the corresponding paint bottle 25 through the spring 24 and into the through hole 211, and the upper end of the guide tube 32 inserted into the through hole 211 obtains the paint from the paint bottle 25 and temporarily stores it; S3, start the drone 1, and simultaneously start the flaw detection probe 11 to detect and inspect the building wall. When a defect is found, the drone 1 flies in situ and starts the marking member 35 to move the marking member 35 along the length direction of the guide tube 31. When the front end of the marking member 35 moves to the lower end of the guide tube 32, the lower end of the guide tube 32 is opened, and the temporarily stored pigment is obtained to mark the defect.

[0055] The above description is only a preferred embodiment of the present invention, and is not intended to be the only one or to limit the present invention. Those skilled in the art should understand that various changes or equivalent substitutions made to the present invention without departing from the scope of the present invention are within the scope of protection of the present invention.

Claims

1. A building wall flaw detection device, comprising a drone (1) with a flaw detection probe (11) provided at its front end, characterized in that: The bottom of the drone (1) is provided with a push rod (12) for vertical extension, and the device further comprises: The material storage part (2) comprises a material storage barrel (21) arranged at the bottom of the drone (1), wherein a through hole (211) corresponding to the push rod is provided at the bottom of the material storage barrel (21), a turntable (22) is coaxially rotatably provided in the material storage barrel (21), and a limiting barrel (23) is provided thereon in a circular array, wherein the center of gravity of the limiting barrel (23) is located outside the turntable (22), and the distance between the center of the limiting barrel (23) and the center of the turntable (22) is consistent with the distance between the center of the through hole (211) and the center of the bottom of the material storage barrel (21), and a spring (24) is provided on the inner bottom surface of the limiting barrel (23), and a paint bottle (25) with its opening facing downward is vertically inserted at the upper end thereof, and a baffle (251) is provided at the opening of the paint bottle (25), and the size of the baffle (251) is smaller than the size of the through hole (211); The marking portion (3) comprises a guide tube (31) arranged horizontally below the storage tube (21); a guide tube (32) is vertically arranged on the guide tube (31), the upper end of which is inserted into the through hole (211) and is used to obtain pigment from the pigment bottle (25) and temporarily store it; a marking member (35) is movably arranged in the guide tube (31) along the length direction and is used to open the guide tube (32) and obtain the temporarily stored pigment for marking.

2. The building wall flaw detection device according to claim 1, characterized in that: The guide tube (32) is provided with a spike portion (321) at the opening of the upper end thereof and is inserted into the through hole (211). The upper end of the spike portion (321) is arranged obliquely. The lower end of the guide tube (32) extends into the guide tube (31). The bottom of the guide tube (32) is provided with discharge holes (322) in a circumferential array. A sealing plug (33) is provided at the center of the bottom of the guide tube (32) for rotation. The top surface of the sealing plug (33) is provided with rubber plugs (331) corresponding to the discharge holes (322) one by one. A tension spring (34) is provided on one side of the sealing plug (33) and one side of the bottom of the guide tube (32). The bottom surface of the sealing plug (33) is provided with a receiving groove (332). The receiving groove (332) is provided with a guide The guide pin (333) is rotatably connected to the receiving groove (332). The marking member (35) includes a movable seat (351) of an inverted L-shaped structure. The top surface of the horizontal portion of the movable seat (351) is provided with an inclined groove (352) for pushing the lower end of the guide pin (333) to open the discharge hole (322). A U-shaped groove (353) is provided on one side of the inclined groove (352), and the rear end of the inclined groove (352) faces the U-shaped groove (353). The opening of the U-shaped groove (353) faces the outlet end of the guide tube (31). A sponge pad (354) is provided at an inner right angle of the movable seat (351) for absorbing the paint in the U-shaped groove (353).

3. The building wall flaw detection device according to claim 1, characterized in that: The upper end of the push rod (12) is connected to the movable end of a first cylinder (121) vertically arranged inside the UAV (1), the lower end of the push rod (12) is provided with a push plate (122), the outer dimensions of the push plate (122) are smaller than the inner diameter of the limiting cylinder (23), the upper end of the material storage cylinder (21) is provided with a convex edge (212) extending toward the inside thereof, the center of the rotating disk (22) is connected to a rotating shaft (221), the upper end of the rotating shaft (221) is provided with a motor (222), the motor (222) is arranged in the UAV (1), the upper spiral sleeve of the rotating shaft (221) is provided with a pressing plate (223), the distance between the pressing plate (223) and the convex edge (212) is larger than the outer diameter of the push plate (122).

4. The building wall flaw detection device according to claim 1, characterized in that: An annular seat (213) is provided inside the bottom surface of the storage barrel (21), the through hole (211) is located on the inner side of the annular seat (213), an annular groove (214) is provided in the top recess of the annular seat (213), a cylindrical roller (215) is provided in the annular groove (214), and the cylindrical roller (215) is in rolling contact with the bottom of the limiting barrel (23).

5. The building wall flaw detection device according to claim 1, characterized in that: Positioning pins (224) are arranged in a circular array on the rotating disk (22), an annular plate (231) is arranged at the bottom of the limiting cylinder (23), a connecting hole is arranged on the annular plate (231), the connecting hole is matched with the positioning pins (224), and the lower end of the spring (24) is arranged on the annular plate (231).

6. The building wall flaw detection device according to claim 5, characterized in that: The spring (24) is a cylindrical structure, and the inner wall size of the spring (24) is larger than the inner diameter of the annular plate (231).

7. The building wall flaw detection device according to claim 1, characterized in that: The outer wall of the guide pin (333) is sleeved with a sleeve (334), and the width of the inclined groove (352) matches the outer diameter of the sleeve (334).

8. The building wall flaw detection device according to claim 2, characterized in that: A strip platform (355) is provided on one side of the U-shaped groove (353); one side of the strip platform (355) is flush with the opening of the U-shaped groove (353); the front end of the inclined groove (352) is connected to one side of the strip platform (355); the rear end of the inclined groove (352) is connected to the other side of the strip platform (355); and the rear end of the inclined groove (352) is inclined toward the U-shaped groove (353).

9. The building wall flaw detection device according to claim 2, characterized in that: A mounting plate (36) is provided at the other end of the guide tube (31), a second cylinder (37) is provided on the mounting plate (36), an output end of the second cylinder (37) is connected to the outer side of the vertical portion of the movable seat (351), support plates (361) are vertically provided on both sides of the mounting plate (36), and the upper ends of the support plates (361) are connected to the drone (1).

10. A method for flaw detection of a building wall, using the building wall flaw detection device as claimed in any one of claims 1 to 9, characterized in that: The steps include: S1, sequentially inserting the paint bottles (25) into the corresponding limiting cylinders (23), and inserting the openings of the paint bottles (25) downward into the upper ends of the springs (24) corresponding to the limiting cylinders (23); S2, starting the push rod (12) to move the push rod (12) vertically downward, so that the upper end of the guide tube (32) is inserted into the through hole (211), and the pigment is obtained from the pigment bottle (25) and temporarily stored; S3, starting the drone (1) and simultaneously starting the flaw detection probe (11) to detect and inspect the building wall. When a defect is found, the drone (1) flies in situ and starts the marking member (35) to move along the guide tube (31) to open the lower end of the guide tube (32) and obtain the temporarily stored pigment to mark the defect.

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