A spraying unmanned aerial vehicle for building construction

Abstract

The application relates to the technical field of building construction, and particularly discloses a spraying unmanned aerial vehicle for building construction, which comprises an unmanned aerial vehicle body, and a spraying device installed at the bottom of the unmanned aerial vehicle body; the spraying device comprises a storage tank installed at the bottom of the unmanned aerial vehicle body and a spraying pipe assembly installed on the storage tank and communicated with the storage tank; the spraying pipe assembly comprises a feeding pipe assembly communicated with the inside of the storage tank, a spraying head assembly connected with the feeding pipe assembly, and an adjusting mechanism arranged on the feeding pipe assembly and used for controlling the position and angle of the spraying head assembly relative to the feeding pipe assembly. The linear driving mechanism and the universal adjusting mechanism are used to flexibly adjust the spraying distance and angle, ensure uniform spraying, and reduce the time and errors of manual adjustment; the adjusting mechanism can accurately control the spraying direction and angle of the spraying head, and ensure high-quality spraying effect on various complex building surfaces.

Description

Technical Field

[0001] This invention relates to the field of building construction technology, and more specifically, to a spraying drone for building construction. Background Technology

[0002] With the acceleration of urbanization, the number of high-rise buildings is constantly increasing, and the demand for the maintenance and decoration of the facades of high-rise buildings is also growing.

[0003] Traditional facade painting operations mainly rely on manual labor and simple mechanical equipment, which is not only labor-intensive and inefficient, but also poses significant safety hazards. Especially when dealing with complex building facade structures, it is difficult to guarantee the quality and uniformity of the painting operation. The development of drone technology has provided a new solution for high-rise building facade painting.

[0004] Using drones for exterior facade painting has the following advantages:

[0005] 1. High efficiency: Drones can quickly reach the designated location and carry out spraying operations, which greatly improves work efficiency.

[0006] 2. Safety: Controlling drones remotely or through preset programs reduces the threat to personal safety during high-altitude operations.

[0007] 3. Precision: Utilizing an advanced control system, the drone can precisely control the direction and angle of spraying, ensuring the uniformity and quality of the spraying.

[0008] However, existing painting drones still have some shortcomings in practical applications:

[0009] 1. Insufficient uniformity of spraying: Because drones need to constantly adjust their position and spraying angle during the spraying process, traditional spraying systems have difficulty ensuring the uniformity of the spraying.

[0010] 2. Unstable material supply: During the spraying process, fluctuations in the liquid level and pressure of the material in the storage tank will affect the spraying effect, making it difficult to achieve a continuous and stable material supply.

[0011] 3. Complex cleaning and maintenance: The cleaning work after spraying is tedious, and the residual material in the spray pipe and storage tank is difficult to completely remove, which increases the difficulty of maintenance. Summary of the Invention

[0012] The technical problem to be solved by the present invention is to provide a spraying drone for building construction;

[0013] The solution adopted by this invention to solve the technical problem is:

[0014] A spraying drone for construction includes a drone body and a spraying device installed at the bottom of the drone body;

[0015] The spraying device includes a storage tank installed at the bottom of the drone body and a spray nozzle assembly installed on and connected to the storage tank.

[0016] The nozzle assembly includes a feed pipe assembly communicating with the inside of the storage tank, a nozzle assembly connected to the feed pipe assembly, and an adjustment mechanism disposed on the feed pipe assembly for controlling the position and angle adjustment of the nozzle assembly relative to the feed pipe assembly.

[0017] In some possible implementations, the feed tube assembly includes an outer sleeve that communicates with the interior of the storage tank at one end and is axially arranged along the X-axis, an inner sleeve that is fitted inside the outer sleeve and extends out of the outer sleeve and communicates with the nozzle assembly at one end, and a linear drive mechanism for controlling the axial movement of the inner sleeve and mounted on the storage tank.

[0018] In some possible implementations, the adjustment mechanism includes a rotating sleeve that is coaxially connected to the inner sleeve and rotatably engaged about the inner sleeve, an angle adjustment device connected to the end of the rotating sleeve away from the inner sleeve, and a rotating drive mechanism mounted on a linear drive mechanism for controlling the rotation of the rotating sleeve about the inner sleeve.

[0019] The nozzle assembly is connected to the angle adjustment device; the nozzle assembly is connected to the rotating sleeve via a flexible hose.

[0020] In some possible implementations, the linear drive mechanism is an electric telescopic rod, the telescopic end of which is connected to the inner sleeve via a mounting block;

[0021] The rotary drive mechanism includes a rotary motor mounted on the telescopic end, a main gear coaxially connected to the output end of the rotary motor, and a driven gear fitted on the outside of the rotary sleeve and meshing with the main gear.

[0022] In some possible implementations, the angle adjustment device includes a rotating cylinder mounted on the end of the rotating sleeve away from the inner sleeve, a rotating shaft fitted inside the rotating cylinder and rotatingly engaging with the rotating cylinder, an arcuate groove disposed on the outside of the rotating cylinder, and an angle drive motor for driving the rotating shaft to rotate about the Y-axis; one end of the nozzle assembly passes through the arcuate groove and is connected to the rotating shaft.

[0023] In some possible implementations, the rotating sleeve is fitted onto the outside of the inner sleeve, and a waterproof bearing is provided on the outside of the inner sleeve; the driven gear is fitted onto the outside of the rotating sleeve and the waterproof bearing.

[0024] A sealing block is provided at the end of the inner sleeve away from the outer sleeve; an annular groove for installing the sealing block is provided inside the rotating sleeve, an annular sealing groove is provided on the side of the annular groove away from the inner sleeve, and a sealing component is provided inside the annular sealing groove.

[0025] The sealing assembly includes a sealing ring installed in an annular sealing groove and a tapered sealing ring disposed between the sealing ring and the sealing block and abutting against the sealing ring.

[0026] In some possible implementations, the storage bin is provided with a feeding port and a discharge port; the discharge port is located at the bottom of the storage bin.

[0027] In some possible implementations, it also includes an air pump installed on and in communication with the storage tank for supplying gas into the storage tank, a liquid level sensor disposed in the storage tank, and a control unit connected to the air pump, the liquid level sensor, and the regulating mechanism, respectively.

[0028] In some possible implementations, the drone body includes a frame mounted on a storage bin, multiple sets of rotor assemblies mounted on the frame and arranged circumferentially along the frame, and multiple sets of support assemblies mounted on the frame.

[0029] In some possible implementations, the rotor assembly includes a support rod with one end mounted on the frame and a rotor body that slides with the support rod;

[0030] The support assembly includes an arc-shaped support rod connected to the frame at one end, a pad hinged to the end of the support rod away from the frame, and a buffer member hinged to the pad at one end and to the support rod at the other end; the support rods cooperate to form a spherical crown-shaped chamber, and the storage box is located in the spherical crown-shaped chamber.

[0031] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0032] This invention provides stable flight and hovering capabilities through the rotor assembly, enabling the drone to quickly reach and stabilize at the spraying position, greatly improving spraying efficiency; through the use of a linear drive mechanism and a universal adjustment mechanism, the spraying distance and angle can be flexibly adjusted to ensure uniform spraying and reduce the time and error of manual adjustment.

[0033] The adjustment mechanism of this invention enables the nozzle to precisely control the spraying direction and angle, ensuring high-quality spraying results on various complex building surfaces.

[0034] This invention monitors the liquid level of the material in the storage tank in real time using a level gauge, replenishes the material in a timely manner, ensures a continuous and stable supply of material during the spraying process, and avoids spraying interruptions and unevenness.

[0035] After completing the spraying task, the present invention drains the remaining material in the storage tank through the discharge port and cleans it with pure water to ensure that there is no residual material in the spray pipe assembly, reducing the risk of blockage and contamination; the air pump delivers gas into the storage tank for drying the cleaned storage tank, ensuring that there is no residual moisture in the entire device, thus improving the durability and reliability of the equipment.

[0036] This invention provides stable support for the drone during landing through a bracket assembly, and buffers the impact force during descent, reducing the risk of damage to the drone during operation; by controlling the drone's flight path and altitude through remote control or preset programs, the risk of manual operation is reduced, and the safety and convenience of spraying operations are improved. Attached Figure Description

[0037] Figure 1 This is a schematic diagram of the structure of the present invention;

[0038] Figure 2 This is a schematic diagram of the rotor assembly in this invention;

[0039] Figure 3 This is a schematic diagram of the support assembly in this invention;

[0040] Figure 4 This is a schematic diagram of the structure of the discharge box and nozzle assembly in this invention;

[0041] Figure 5 This is a schematic diagram of the nozzle assembly in this invention;

[0042] Figure 6 This is a schematic diagram showing the connection relationship between the inner sleeve, rotating sleeve, rotating cylinder, angle adjustment device, linear drive mechanism, and spray pipe in this invention.

[0043] Figure 7 for Figure 6 Enlarged view of point A in the middle;

[0044] Figure 8 This is a schematic diagram of the structure of the frame, control unit, air pump, battery pack, and alarm in this invention;

[0045] The components include: UAV body, 11-frame, 12-rotor assembly, 121-support rod, 122-slide rod, 123-rotor motor, 124-wing, 13-bracket assembly, 131-support rod, 132-pad plate, 133-outer outer rod, 1331-outer limiting plate, 134-inner sleeve rod, 1341-inner limiting plate, 1342-limiting rod, 2-storage bin, 21-feeding port, 22-discharge port, 3-nozzle assembly, 31-outer outer tube, 311-guide tube, 32-inner tube, 321-sealing block, 3 22-Waterproof bearing, 323-End panel, 33-Linear drive mechanism, 4-Adjustment mechanism, 41-Rotating sleeve, 411-Annular groove, 412-Sealing ring, 413-Conical sealing ring, 42-Angle adjustment device, 421-Rotating cylinder, 422-Rotating shaft, 43-Rotating drive mechanism, 431-Rotating motor, 432-Main gear, 433-Driven gear, 5-Sprayer assembly, 51-Spray tube, 52-Sprayer, 53-Hose, 6-Control unit, 7-Air pump, 8-Alarm, 9-Battery pack. Detailed Implementation

[0046] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. The terms "first," "second," and similar terms used in this application do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, "a" or "one," etc., do not indicate a quantity limitation, but rather indicate the existence of at least one. In the implementation of this application, "and / or" describes the association relationship of related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. In the description of the embodiments of this application, unless otherwise stated, "multiple" means two or more. For example, multiple positioning posts refer to two or more positioning posts. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0047] The present invention will now be described in detail.

[0048] like Figures 1-8 As shown:

[0049] A spraying drone for building construction, used for spraying construction on building facades; including drone body 1 and spraying device installed at the bottom of drone body 1;

[0050] The spraying device includes a storage tank 2 installed at the bottom of the UAV body 1 and a spray nozzle assembly 3 installed on the storage tank 2 and connected to the storage tank 2.

[0051] The nozzle assembly 3 includes a feed pipe assembly that communicates with the inside of the storage tank 2, a nozzle assembly 5 that is connected to the feed pipe assembly, and an adjustment mechanism 4 that is mounted on the feed pipe assembly and is used to control the position and angle adjustment of the nozzle assembly 5 relative to the feed pipe assembly.

[0052] When in use, the entire structure is controlled by the drone body 1 to fly. After flying to the designated altitude, the painting work is carried out.

[0053] During spraying, the angle and position of the nozzle assembly 5 relative to the building facade are adjusted in real time by the adjustment mechanism 4 to achieve uniform spraying of the building facade.

[0054] After the spraying is completed or the material in storage bin 2 is exhausted, it will descend to the designated position.

[0055] Compared to existing technologies, the adjustment mechanism 4 allows for effective control of the position and angle of the spray nozzle assembly 5 relative to the building facade, resulting in more uniform spraying.

[0056] In some possible implementations, in order to effectively achieve spraying in narrow spaces on the exterior of a building; to avoid situations where the size of the narrow space is too small for the entire device to enter and carry out the spraying operation;

[0057] The feeding tube assembly includes an outer tube 31 that is connected to the inside of the storage tank 2 and is axially arranged along the X-axis, an inner tube 32 that is fitted inside the outer tube 31 and has one end extending out of the outer tube 31 and connected to the nozzle assembly 5, and a linear drive mechanism 33 for controlling the inner tube 32 to move along its axial direction and installed on the storage tank 2.

[0058] The end of the outer sleeve 31 that is not passed through the inner sleeve 32 is connected to the inside of the storage box 2 through the guide pipe 311, so as to transport the material from the storage box 2 to the feed pipe assembly, and then transport the material to the spray head assembly 5 through the inner sleeve 32, and spray the material on the exterior of the building through the spray head assembly 5.

[0059] Furthermore, the end of the feed tube 311 away from the outer tube 31 is connected to a filter fixed in the storage box 2 to filter the material entering the feed tube 311 first, so as to ensure the coating quality.

[0060] The outer sleeve 31 is fixedly installed on the storage box 2. The inner sleeve 32 is coaxial with the outer sleeve 31 and slides and extends. When it is necessary to spray a narrow space, the linear drive mechanism 33 controls the inner sleeve 32 to extend, so that the nozzle assembly 5 and the adjustment mechanism 4 connected to the inner sleeve 32 extend into the narrow space to realize the spraying operation. The UAV body 1 and the storage box 2 will be located outside the narrow space. When the nozzle assembly 5 and the adjustment mechanism 4 extend into the narrow space, the spraying operation can be carried out.

[0061] Of course, it is also possible to control only the nozzle assembly 5 to enter the confined space, which can be controlled according to the actual construction needs.

[0062] In some possible implementations, in order to effectively adjust the angle and position of the nozzle assembly 5 relative to the building facade through the adjustment mechanism 4;

[0063] The adjustment mechanism 4 includes a rotating sleeve 41 that is coaxially connected to the inner sleeve 32 and rotates around the inner sleeve 32, an angle adjustment device 42 connected to the end of the rotating sleeve 41 away from the inner sleeve 32, and a rotating drive mechanism 43 mounted on the linear drive mechanism 33 for controlling the rotation of the rotating sleeve 41 around the inner sleeve 32.

[0064] The nozzle assembly 5 is connected to the angle adjustment device 42; the nozzle assembly 5 is connected to the rotating sleeve 41 through the hose 53.

[0065] The material enters the inner sleeve 32 through the outer sleeve 31. Since the rotating sleeve 41 is connected to the inner sleeve 32, the material can enter the rotating sleeve 41 and be transported to the spray head assembly 5 through the hose 53. The spray head assembly 5 is used to spray the exterior of the building.

[0066] During the spraying process, the angle adjustment device 42 adjusts the relative angle and position of the nozzle assembly 5 and the rotating sleeve 41, thereby adjusting the angle and position with the building facade to make the spraying more uniform.

[0067] In some possible implementations, in order to effectively control the extension and retraction of the inner sleeve 32 relative to the outer sleeve 31, the position of the nozzle assembly 5 relative to the building facade can be adjusted.

[0068] The linear drive mechanism 33 is an electric telescopic rod, and the telescopic end of the electric telescopic rod is connected to the inner sleeve 32 through a mounting block; of course, existing technologies such as hydraulic or pneumatic telescopic rods that can achieve linear drive can also be used to achieve this.

[0069] The rotary drive mechanism 43 includes a rotary motor 431 mounted on the telescopic end, a main gear 432 coaxially connected to the output end of the rotary motor 431, and a driven gear 433 fitted on the outside of the rotary sleeve 41 and meshing with the main gear 432.

[0070] The electric telescopic rod includes a fixed end installed on the storage box 2 and a telescopic end that telescopically cooperates with the fixed end; the telescopic end is connected to one end of the inner sleeve 32 that extends out of the outer sleeve 31; thereby effectively driving the inner sleeve 32 and the adjustment mechanism 4 to move along the axial direction of the inner sleeve 32 through the electric telescopic rod, and realizing the adjustment of the positional relationship between the nozzle assembly 5 and the building facade when the UAV body 1 is not moving.

[0071] A rotary motor 431 is also installed on the telescopic end. The output shaft of the rotary motor 431 is parallel to the axis of the inner sleeve 32. The driven gear 433 is fitted on the outside of the rotary sleeve 41 and is coaxial with the rotary sleeve 41. When the rotary motor 431 controls the main gear 432 to rotate, the main gear 432 will drive the driven gear 433 to rotate, thereby realizing the rotation of the rotary sleeve 41 relative to the inner sleeve 32, so that the nozzle assembly 5 connected to the rotary sleeve 41 rotates. During use, the nozzle assembly 5 can be adjusted in all directions in conjunction with the angle adjustment device 42.

[0072] In some possible implementations, in order to effectively adjust the angle and position of the nozzle assembly 5 relative to the building facade by means of the angle adjustment device 42 in conjunction with the rotary drive mechanism 43;

[0073] The angle adjustment device 42 includes a rotating cylinder 421 installed at the end of the rotating sleeve 41 away from the inner sleeve 32, a rotating shaft 422 fitted inside the rotating cylinder 421 and rotatably engaged with the rotating cylinder 421, an arc-shaped groove provided on the outside of the rotating cylinder 421, and an angle drive motor for driving the rotating shaft 422 to rotate around the Y-axis; one end of the nozzle assembly 5 passes through the arc-shaped groove and is connected to the rotating shaft 422;

[0074] The axis of the rotating cylinder 421 is set along the Y-axis direction. The axis of the rotating cylinder 421 and the line of the inner sleeve 32 are on the same horizontal plane and perpendicular to each other. The arc groove is arc-shaped and the center of the circle is on the axis of the rotating shaft 422. The rotating shaft 422 is coaxially set with the rotating cylinder 421. The rotating shaft 422 is driven to rotate by the angle drive motor, so that the nozzle assembly 5 rotates around the axis of the rotating shaft 422.

[0075] Preferably, the arc groove is semi-circular; this allows the nozzle assembly 5 to have an adjustment angle of 180°.

[0076] In some possible implementations, the rotating sleeve 41 is fitted onto the outside of the inner sleeve 32, and a waterproof bearing 322 is provided on the outside of the inner sleeve 32; the driven gear 433 is fitted onto the outside of the rotating sleeve 41 and the waterproof bearing 322; the outside of the waterproof bearing 322 is coplanar with the outside of the rotating sleeve 41; the driven gear 433 is partially fitted onto the outside of the waterproof bearing 322 and connected to it.

[0077] Furthermore, an end panel 323 is provided on the side of the waterproof bearing 322 away from the rotating sleeve 41;

[0078] A circular sealing block 321 is provided at the end of the inner sleeve 32 away from the outer sleeve 31;

[0079] The sealing block 321 is coaxially arranged with the inner sleeve 32 and is interconnected with it;

[0080] An annular groove 411 for installing a sealing block 321 is provided inside the rotating sleeve 41. An annular sealing groove is provided on the side of the annular groove 411 away from the inner sleeve 32. A sealing assembly is provided in the annular sealing groove.

[0081] The sealing block 321 is installed and rotated in conjunction with the annular groove 411. The cooperation between the annular sealing groove and the sealing assembly effectively improves the sealing performance at the connection between the rotating sleeve 41 and the inner sleeve 32, preventing material leakage from the connection. The sealing assembly includes a sealing ring 412 installed in the annular sealing groove and a conical sealing ring 413 disposed between the sealing ring 412 and the sealing block 321 and abutting against the sealing ring 412.

[0082] In some possible implementations, the storage tank 2 is provided with a feeding port 21 and a discharge port 22; the discharge port 22 is located at the bottom of the storage tank 2.

[0083] The feeding port 21 is used for adding materials; the discharge port 22 is used for cleaning the storage tank 2 after spraying.

[0084] In some possible implementations, it also includes an air pump 7 installed on and communicating with the storage tank 2 for supplying gas into the storage tank 2, a liquid level sensor disposed in the storage tank 2, and a control unit 6 connected to the air pump 7, the liquid level sensor, and the regulating mechanism 4 respectively.

[0085] Furthermore, an alarm 8 and a battery pack 9 are also provided, which are connected to the control unit 6;

[0086] During the spraying operation, the control unit 6 controls the air pump 7, the rotary motor 431, and the angle adjustment motor to achieve spraying; when the liquid level sensor detects that the material is low, it controls the alarm 8 to issue a warning; then it descends.

[0087] The air pump 7 is connected to the storage tank 2 through the air delivery pipe. A check valve is installed on the air delivery pipe to prevent material from entering the air delivery pipe. The air pump 7 delivers gas to the storage tank 2, so that the material in the storage tank 2 is sprayed out through the nozzle assembly 5 under pressure.

[0088] The nozzle assembly 5 includes a spray pipe 51 connected to the rotating shaft 422, and a nozzle 52 disposed at the end of the spray pipe 51 away from the rotating shaft 422 and communicating with the spray pipe 51. The spray pipe 51 is connected to the rotating sleeve 41 via a hose 53. The hose 53 ensures that the spray pipe 51 is connected to the rotating sleeve 41 regardless of how the angle of the spray pipe 51 changes.

[0089] Furthermore, a pressure gauge is installed on the outside of the storage bin 2 to check whether the air pressure is stable, prevent air leakage in the pipeline, and ensure that the air pressure is normal.

[0090] In some possible implementations, the drone body 1 includes a frame 11 mounted on a storage bin 2, multiple sets of rotor assemblies 12 mounted on the frame 11 and arranged circumferentially along the frame 11, and multiple sets of support assemblies 13 mounted on the frame 11.

[0091] In some possible implementations, the rotor assembly 12 includes a support rod 121 with one end mounted on the frame 11 and a rotor body that slides with the support rod 121;

[0092] The support rod 121 is provided with a sliding groove along its axial direction. The rotor body includes a slide rod 122 that slides with the sliding groove, a rotor motor 123 connected to the end of the slide rod 122 away from the frame 11, and a wing 124 connected to the output shaft of the rotary motor 431. After the position of the support rod 121 is adjusted into place, the support rod 121 and the slide rod 122 are connected and fixed by bolts. The axis of the output shaft of the rotor motor 123 is set along the Z-axis. The control unit controls the rotor motor 123 to drive the wing 124 to rotate around the Z-axis, thereby driving the entire device to take off and fly.

[0093] The support assembly 13 is used to support and fix the entire device; the support assembly 13 includes an arc-shaped support rod 131 connected to the frame 11 at one end, a pad 132 hinged to the end of the support rod 131 away from the frame 11, and a buffer member hinged to the pad 132 at one end and to the support rod 131 at the other end; the support rods 131 cooperate with each other to form a spherical crown-shaped cavity, and the storage box 2 is located in the spherical crown-shaped cavity.

[0094] The buffer component includes a telescopic sleeve rod with one end hinged to the pad 132 and the other end hinged to the support rod 131, and a spring telescopic component fitted on the outside of the telescopic sleeve. The telescopic sleeve rod includes an outer sleeve rod 133 hinged to the support rod 131 and an inner sleeve rod 134 fitted on the outer sleeve rod 133 and connected to the pad 132. The spring telescopic component includes an outer limiting plate 1331 fitted on the outer sleeve rod 133, an inner limiting plate 1341 fitted on the inner sleeve rod 134, and a buffer spring fitted on the outside of the telescopic sleeve rod and connected to the outer limiting plate 1331 and the inner limiting plate 1341 respectively. A waist-shaped hole is provided on the outer sleeve rod 133 along its axial direction, and a limiting rod 1342 is provided on the inner sleeve rod 134, with the limiting rod 1342 located inside the waist-shaped hole. This achieves buffering and vibration reduction after the entire device lands.

[0095] Furthermore, in this invention, there are four sets of rotor assemblies 12 and four sets of support assemblies 13, which are arranged one-to-one with the rotor assemblies 12. Each set of support assemblies 13 is located directly below the rotor assembly 12. The frame 11 is installed above the storage box 2 and forms an installation space with the storage box 2. The control unit 6, battery pack 9, and air pump 7 are located in the installation space, and the alarm is installed on the frame 11.

[0096] This invention is not limited to the specific embodiments described above. The invention extends to any new feature or combination disclosed in this specification, as well as any new method or process step or combination disclosed herein.

Claims

1. A spraying drone for building construction, characterized in that, Includes the drone body and the spraying device installed on the bottom of the drone body; The spraying device includes a storage tank installed at the bottom of the UAV body and a spray nozzle assembly installed on and connected to the storage tank. The nozzle assembly includes a feed pipe assembly that communicates with the inside of the storage tank, a nozzle assembly that is connected to the feed pipe assembly, and an adjustment mechanism that is disposed on the feed pipe assembly and is used to control the position and angle adjustment of the nozzle assembly relative to the feed pipe assembly. The feed tube assembly includes an outer tube that communicates with the inside of the storage tank at one end, an inner tube that is fitted inside the outer tube and extends out of the outer tube to communicate with the nozzle assembly at one end, and a linear drive mechanism for controlling the movement of the inner tube along its axial direction and mounted on the storage tank; the axial direction of the outer tube is the X-axis direction. The adjustment mechanism includes a rotating sleeve that is coaxially connected to the inner sleeve and rotates around the inner sleeve axially, an angle adjustment device connected to the end of the rotating sleeve away from the inner sleeve, and a rotating drive mechanism mounted on a linear drive mechanism for controlling the rotation of the rotating sleeve around the inner sleeve axially. The nozzle assembly is connected to the angle adjustment device; the nozzle assembly is connected to the rotating sleeve via a hose; the rotating sleeve is fitted onto the outside of the inner sleeve, and a waterproof bearing is provided on the outside of the inner sleeve; a sealing block is provided at the end of the inner sleeve away from the outer sleeve; an annular groove for installing the sealing block is provided inside the rotating sleeve, an annular sealing groove is provided on the side of the annular groove away from the inner sleeve, and a sealing assembly is provided in the annular sealing groove. The sealing assembly includes a sealing ring installed in an annular sealing groove, and a tapered sealing ring disposed between the sealing ring and the sealing block and abutting against the sealing ring.

2. The spraying drone for building construction according to claim 1, characterized in that, The linear drive mechanism is an electric telescopic rod, and its telescopic end is connected to the inner sleeve through a mounting block. The rotary drive mechanism includes a rotary motor mounted on the telescopic end, a main gear coaxially connected to the output end of the rotary motor, and a driven gear fitted on the outside of the rotary sleeve and meshing with the main gear.

3. The spraying drone for building construction according to claim 1, characterized in that, The angle adjustment device includes a rotating cylinder installed at the end of the rotating sleeve away from the inner sleeve, a rotating shaft fitted inside the rotating cylinder and rotating in cooperation with the rotating cylinder, an arc-shaped groove provided on the outside of the rotating cylinder, and an angle drive motor for driving the rotating shaft to rotate around the Y-axis; one end of the nozzle assembly passes through the arc-shaped groove and is connected to the rotating shaft; the Y-axis direction is perpendicular to the X-axis direction.

4. The spraying drone for building construction according to claim 2, characterized in that, The driven gear is mounted on the outside of the rotating sleeve and the waterproof bearing.

5. A spraying drone for building construction according to claim 4, characterized in that, The storage bin is equipped with a feeding port and a discharge port; the discharge port is located at the bottom of the storage bin.

6. A spraying drone for building construction according to claim 1, characterized in that, It also includes an air pump installed on and connected to the storage tank for supplying gas into the storage tank, a liquid level sensor installed inside the storage tank, and control units connected to the air pump, the liquid level sensor, and the regulating mechanism, respectively.

7. A spraying drone for building construction according to claim 1, characterized in that, The drone body includes a frame mounted on a storage bin, multiple sets of rotor assemblies mounted on the frame and arranged circumferentially along the frame, and multiple sets of support assemblies mounted on the frame.

8. A spraying drone for building construction according to claim 7, characterized in that, The rotor assembly includes a support rod mounted on the frame at one end and a rotor body that slides with the support rod; The support assembly includes an arc-shaped support rod connected to the frame at one end, a pad hinged to the end of the support rod away from the frame, and a buffer member hinged to the pad at one end and to the support rod at the other end; the support rods cooperate to form a spherical crown-shaped chamber, and the storage box is located in the spherical crown-shaped chamber.

Images