Multi-degree-of-freedom drilling device for main spar of unmanned aerial vehicle

Abstract

The invention belongs to the technical field of drilling equipment, and discloses an unmanned aerial vehicle main wing spar multi-degree-of-freedom drilling device which comprises a base, a drilling assembly and a driving assembly, the drilling assembly is installed above the base, the driving assembly is installed in the drilling assembly, the drilling assembly comprises a driving motor installed above the base, and the driving motor is connected with the driving assembly. A hydraulic lifting rod is installed below the driving motor, a drill rod is installed at the bottom of the hydraulic lifting rod, a circular fixator is installed on the outer wall of the drill rod, and a plurality of spraying pipes are installed on the outer wall of the fixator in a surrounding mode. By arranging the spraying pipes, a water curtain can be formed around the drill rod, after the storage cavity is pressurized, the pressure in the storage cavity can be continuously increased, water is sprayed outwards through the spraying pipes, at the moment, the pressure is increased, and at the moment, the multiple spraying pipes can form an atomized water curtain around the drill rod; and dust and particulate matter generated by the carbon fiber material during drilling of the drill rod are blocked, dust diffusion is prevented, and workers are protected.

Description

Technical Field

[0001] The invention belongs to the technical field of drilling equipment, and in particular relates to a multi-degree-of-freedom drilling device for a main wing beam of an unmanned aerial vehicle. Background Art

[0002] The wing spar, as an aircraft component, is a span-wise load-bearing member in the wing structure that mainly bears bending moment and shear force. It consists of flanges (i.e., upper and lower rims) and webs, of which the upper and lower rims bear bending moment loads in tension and compression, and the webs transmit tangential loads in shear. The structural design of the main wing spar of a drone needs to comprehensively consider factors such as the aircraft airfoil, aspect ratio, assembly, and flight conditions. Common main wing spar structures of drones include box beams and I-shaped carbon beams. In drones, the main wing spar plays an important role in supporting the wing and transmitting loads, ensuring that the main wing spar is not damaged under the maximum overload, that is, meeting the strength requirements; at the same time, ensuring that the deformation of the wing is within the allowable range, that is, meeting the stiffness requirements. According to factors such as the weight, cost, and performance requirements of the drone, choose the appropriate material to make the main wing spar. For example, carbon fiber materials have the characteristics of light weight and high strength, and are one of the ideal choices for the main wing spar of drones.

[0003] During the production and processing of drones, it is usually necessary to drill holes on the main wings or other parts of the drone to facilitate the subsequent installation of other components. In the prior art, a drilling machine is usually used for processing.

[0004] Patent document CN110480762A, as the prior art that is most recently connected to the present application, records that "the end actuator has the A-axis rotational freedom; the torque motor in the posture adjustment mechanism of the end actuator rotates, so that the end actuator has the B-axis rotational freedom. The modular three-degree-of-freedom machining robot provided by the present invention has high integration, small size, low cost, and easy installation and use. The present invention can be installed on a gantry machine tool or a truss robot, and can perform multi-process operations such as milling, drilling, grinding, deburring, and laser processing." However, the above patent does not process the cutting chips such as chips and dust generated during the processing, which will cause the chips and dust to spread around. The dust and chips are subject to a large centrifugal force, and the rapid splashing outwards can also cause harm to the staff.

[0005] In addition, in the prior art, the main wing beams of UAVs are mostly made of composite fiber materials or glass fiber materials and alloys. When the material used is carbon fiber material, the carbon fiber chips generated during drilling are dusty, which will pollute the environment and endanger human health. When drilling the main wing beams of carbon fiber UAVs, the carbon fiber dust is easily inhaled into the lungs. Long-term exposure may cause lung diseases such as silicosis. In addition, the cutting speed and depth of carbon fiber materials need to be controlled during the drilling process. Unstable speed will cause defects such as delamination, tearing of carbon fiber materials and burrs at the drilling site. Summary of the invention

[0006] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a multi-degree-of-freedom drilling device for the main wing beam of an unmanned aerial vehicle, which solves the technical problem that dust is easily generated during the prior drilling process.

[0007] The object of the present invention can be achieved by the following technical solution: A multi-degree-of-freedom drilling device for a main wing beam of an unmanned aerial vehicle comprises a base, a drilling assembly and a driving assembly;

[0008] A drilling assembly is installed above the base, and a driving assembly is installed inside the drilling assembly;

[0009] The drilling assembly includes a driving motor installed above the base, a hydraulic lifting rod is installed below the driving motor, a drill rod is installed at the bottom of the hydraulic lifting rod, a circular fixture is installed on the outer wall of the drill rod, a plurality of spray pipes are installed around the outer wall of the fixture, a sealing strip is installed on the inner wall of the spray pipe, and the sealing strip gradually reduces the aperture of the spray pipe, a water inlet pipe is installed on the top of the fixture, a first one-way valve is installed on the outer wall of the water inlet pipe, and a plurality of air inlet holes are opened at the bottom of the fixture.

[0010] In some disclosures, a plurality of fixing bolts are installed through the top of the base, a fixing column is installed on the top of the base, a fixing ring is installed on the outer wall of the fixing column, a connector is installed on the top of the fixing column, and one end of the connector is fixedly connected to the outer wall of the driving motor, a handle is installed on the top of the connector, a water tank is installed on the back of the connector, and a water pump is arranged inside the water tank, and the output end of the water pump is connected to one end of the water inlet pipe.

[0011] In some disclosures, the drive assembly includes a No. 1 gear installed on the outer wall of the drill pipe, a storage chamber is installed on the inner wall of the fixer, a driven rod is installed on the bottom of the storage chamber, a No. 2 gear is installed on the outer wall of the driven rod, and the No. 1 gear is meshed with the No. 2 gear, and a cam is installed on the outer wall of the driven rod.

[0012] In some disclosures, an air pump is installed at the bottom of the storage chamber, an air suction hole is opened at the bottom of the air pump, a moving rod is installed through the outer wall of the air pump, an impact plate is installed at one end of the moving rod, a first spring is installed around the outer wall of the moving rod, a sealing plate is installed at one end of the moving rod, a pressurized tube is installed on the outer wall of the air pump, and one end of the pressurized tube extends into the interior of the storage chamber, and a second one-way valve is installed on the outer wall of the pressurized tube.

[0013] In some disclosures, a plurality of fixing grooves are formed on the outer wall of the drill pipe, a second spring is installed on the inner wall of the fixing groove, and a speed reduction block is installed at one end of the second spring.

[0014] In some disclosures, a pressure sensing component is installed on the inner wall of the storage chamber, and the pressure sensing component includes two fixed cylinders installed on the inner wall of the storage chamber. A trigger rod is installed through the outer wall of the storage chamber, and a third spring is installed around the outer wall of the trigger rod. A deceleration plate is installed at one end of the trigger rod, and the deceleration plate and the deceleration block are at the same height. A sliding plate is installed at one end of the trigger rod, and the sliding plate slides inside the fixed cylinder.

[0015] In some disclosures, a protective shell is installed on the outer wall of the fixing ring, an adjusting motor is installed on the inner wall of the protective shell, a supporting plate is installed on the output end of the adjusting motor, a T-shaped adjusting plate is installed on the top of the supporting plate, and a clamping plate is movably connected above the adjusting plate.

[0016] In some disclosures, a fixing frame is installed at the bottom of the clamping plate, an adjusting shaft is installed on the outer wall of the fixing frame, and the adjusting shaft is connected to the top of the adjusting plate, and two electric telescopic rods are installed at the bottom of the adjusting plate.

[0017] In some disclosures, multiple motors are installed on the outer wall of the clamping plate, a reciprocating screw is installed on the output end of the motor, the outer wall of the reciprocating screw is connected to a clamping block through a thread, four clamping grooves are opened on the top of the clamping plate, and the clamping block slides inside the clamping grooves.

[0018] The nouns, conjunctions or adjectives involved in the above technical solution are explained as follows:

[0019] A fixed connection is one where the parts or components are fixed without any relative movement;

[0020] A rotational connection is a connection between parts that allows the parts to rotate relative to each other;

[0021] Threaded connection is a detachable fixed connection with the advantages of simple structure, reliable connection, and convenient assembly and disassembly. It is widely used in the fields of mechanical engineering and connection structures.

[0022] A sliding connection is a connection between parts that allows the parts to slide against each other.

[0023] Beneficial effects of the present invention:

[0024] 1. The present invention can form a water curtain around the drill rod by arranging a spray pipe. After the storage chamber is pressurized, the pressure in the storage chamber will continue to increase, and water will be sprayed outward through the spray pipe. At this time, the pressure increases, and the aperture in the spray pipe gradually decreases, so that the water in the pipe is atomized and diffused downward. When the rotation speed of the drill rod reaches the standard speed, the speed of pressure release from the spray pipe is the same as the speed of pressurizing the storage chamber with the air pump. At this time, multiple spray pipes will form an atomized water curtain around the drill rod, which blocks the dust and particulate matter generated by the carbon fiber material when the drill rod is drilling, prevents the dust from spreading, and protects the staff.

[0025] 2. The present invention can realize the automatic deceleration function by setting a deceleration structure. The rotation speed of the drill rod is too fast, resulting in an increase in centrifugal force. At this time, the deceleration block moves outward and pulls the second spring to extend. When the deceleration block begins to contact the deceleration plate, it will block the rotation of the drill rod, thereby achieving a deceleration effect by hindering the movement of the drill rod, so that the drill rod can work at a reasonable rotation speed, realizing the function of automatic deceleration. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0027] Figure 1 is a schematic diagram of the overall structure of an embodiment of the present invention;

[0028] Figure 2 is a schematic diagram of the structure of the fixture and the drill rod part of an embodiment of the present invention;

[0029] Figure 3 is a schematic diagram of the cross-sectional structure of a knot fixer according to an embodiment of the present invention;

[0030] Figure 4 is a partial structural schematic diagram of an air pump according to an embodiment of the present invention;

[0031] Figure 5 The embodiment of the present invention Figure 3 Schematic diagram of the structure of part A;

[0032] Figure 6 The embodiment of the present invention Figure 3 Schematic diagram of the structure of part B;

[0033] Figure 7 is a schematic diagram of a top view of a fixing ring according to an embodiment of the present invention;

[0034] Figure 8 is a schematic diagram of the bottom structure of a clamping plate according to an embodiment of the present invention;

[0035] Fig. 9 is a schematic diagram of the structure of a clamping plate portion of an embodiment of the present invention;

[0036] Fig.10 It is a schematic diagram of the clamping cross-sectional structure of an embodiment of the present invention.

[0037] In the figure: 1, base; 11, fixing bolt; 12, fixing column; 13, connector; 14, handle; 15, water tank; 2, drilling assembly; 20, hydraulic lifting rod; 21, driving motor; 22, drilling rod; 23, fixing device; 24, spraying pipe; 25, blocking strip; 26, water inlet pipe; 27, air inlet hole; 3, driving assembly; 30, gear No. 1; 31, storage chamber; 32, driven rod; 33, gear No. 2; 34, cam; 4, pump; 41, suction hole; 42, moving rod; 43, impact plate; 44, first Spring; 45, sealing plate; 46, pressurizing tube; 47, second one-way valve; 5, fixing groove; 51, second spring; 52, deceleration block; 6, fixing ring; 61, protective shell; 62, adjusting motor; 63, supporting plate; 64, adjusting plate; 7, clamping plate; 71, fixing frame; 72, adjusting shaft; 73, electric telescopic rod; 8, motor; 81, reciprocating screw rod; 82, clamping block; 83, clamping groove; 9, pressure sensing component; 90, fixing cylinder; 91, trigger rod; 92, third spring; 93, deceleration plate; 94, sliding plate. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] See also Figure 1 and Figure 2 A multi-degree-of-freedom drilling device for the main wing beam of an unmanned aerial vehicle comprises a base 1, a drilling assembly 2 and a driving assembly 3. The drilling assembly 2 is installed above the base 1, and the driving assembly 3 is installed inside the drilling assembly 2. The drilling assembly 2 comprises a driving motor 21 installed above the base 1, a hydraulic lifting rod 20 is installed below the driving motor 21, a drilling rod 22 is installed at the bottom of the hydraulic lifting rod 20, and a circular fixture 23 is installed on the outer wall of the drilling rod 22.

[0040] Specifically, when drilling a hole in the main wing of the drone, the driving motor 21 is started, the driving motor 21 drives the drill rod 22 to rotate, and then the hydraulic lifting rod 20 is started, so that the hydraulic lifting rod 20 drives the drill rod 22 to move downward, thereby realizing the processing and drilling function of the main wing of the drone;

[0041] It should be noted that during the processing, the water inlet pipe 26 delivers water to the inside of the fixture 23, and then sprays it out through the spray pipe 24 to form a water curtain around the drill rod 22, preventing the dust generated by the drilling from spreading to the surroundings, achieving the dust reduction function, and effectively protecting the workers;

[0042] It should be noted that, compared with the prior art that is closest to this application, the present application uses a water curtain to surround the drilling site, so that dust and debris can be blocked by the water curtain, especially dust can combine with water vapor and settle quickly, ensuring that dust does not spread outward. In addition, when this device is used to drill holes in other metal parts, the debris generated will be blocked by the surrounding water curtain when it splashes outward. Even if the debris can penetrate the water curtain, its kinetic energy will be greatly reduced, the splashing speed will be reduced, and the flight distance will be greatly shortened, which can also ensure the safety of the staff.

[0043] See also Figure 1 A plurality of fixing bolts 11 are installed through the top of the base 1, a fixing column 12 is installed on the top of the base 1, a fixing ring 6 is installed on the outer wall of the fixing column 12, a connector 13 is installed on the top of the fixing column 12, and one end of the connector 13 is fixedly connected to the outer wall of the driving motor 21, a handle 14 is installed on the top of the connector 13, a water tank 15 is installed on the back of the connector 13, and a water pump is arranged inside the water tank 15, and the output end of the water pump is connected to one end of the water inlet pipe 26.

[0044] Specifically, the device is first fixed by fixing the bolts 11, and then the main wing of the UAV to be processed is placed on the clamping plate 7 for clamping, and then the drill rod 22 is used to drill holes in the main wing of the UAV to realize the drilling function. The device can be easily moved through the handle 14, and the water tank 15 can provide water to the storage chamber 31.

[0045] See also Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6The driving assembly 3 includes a first gear 30 mounted on the outer wall of the drill rod 22, a storage chamber 31 is mounted on the inner wall of the holder 23, a driven rod 32 is mounted on the bottom of the storage chamber 31, a second gear 33 is mounted on the outer wall of the driven rod 32, and the first gear 30 is meshed with the second gear 33, a cam 34 is mounted on the outer wall of the driven rod 32, a plurality of spray pipes 24 are mounted around the outer wall of the holder 23, a blocking strip 25 is mounted on the inner wall of the spray pipe 24, and the blocking strip 25 gradually reduces the aperture of the spray pipe 24, and a water inlet pipe 26 is mounted on the top of the holder 23, and the water inlet pipe 26 A first one-way valve is installed on the outer wall, a plurality of air inlet holes 27 are provided at the bottom of the fixer 23, an air pump 4 is installed at the bottom of the storage chamber 31, an air suction hole 41 is provided at the bottom of the air pump 4, a moving rod 42 is installed through the outer wall of the air pump 4, an impact plate 43 is installed at one end of the moving rod 42, a first spring 44 is installed around the outer wall of the moving rod 42, a sealing plate 45 is installed at one end of the moving rod 42, a pressurizing tube 46 is installed on the outer wall of the air pump 4, and one end of the pressurizing tube 46 extends into the interior of the storage chamber 31, and a second one-way valve 47 is installed on the outer wall of the pressurizing tube 46.

[0046] Specifically, when using the device, the drill rod 22 first works for a period of time, at which time the drill rod 22 drives the No. 1 gear 30 to rotate, the No. 1 gear 30 drives the No. 2 gear 33 to rotate, the No. 2 gear 33 drives the driven rod 32 to rotate, the driven rod 32 drives the cam 34 to rotate, and when the cam 34 rotates, it will reciprocate and collide with the impact plate 43 and squeeze the impact plate 43. At this time, the movement of the impact plate 43 drives the moving rod 42 to move, and the movement of the moving rod 42 drives the first spring 44 to extend, and at the same time the sealing plate 45 moves inside the air pump 4. Before the sealing plate 45 moves, the external air enters the interior of the air pump 4 through the air inlet 27 and the air suction hole 41. When the sealing plate 45 starts to move, the sealing plate 45 squeezes the air inside the air pump 4, so that the pressure inside the air pump 4 increases, and then the air enters the storage chamber 31 through the second one-way valve 47, so that the pressure in the storage chamber 31 increases;

[0047] It should be noted that before starting work, the water pump in the water tank 15 will pump water into the storage chamber 31, and the first one-way valve will prevent the water in the storage chamber 31 from flowing back. After the storage chamber 31 is pressurized, the pressure in the storage chamber 31 will continue to increase, and the water will be sprayed outward through the spray pipe 24. At this time, the pressure increases, and the aperture in the spray pipe 24 gradually decreases, so that the water in the pipe is atomized and diffused downward. When the rotation speed of the drill rod 22 reaches the standard speed, the speed of pressure release from the spray pipe 24 is the same as the speed of pressurizing the storage chamber 31 by the air pump 4. At this time, multiple spray pipes 24 will form an atomized water curtain around the drill rod 22, which will block the dust and particulate matter generated by the carbon fiber material when the drill rod 22 is drilling, prevent the dust from spreading, and protect the staff.

[0048] In addition, while the present application uses a water curtain to surround the drilling hole, the water mist can also cool down the area near the drilling hole of the main wing beam of the drone, and when the height of the drilling hole contacts the water curtain, the water curtain is in the form of misty water droplets, so that the water curtain can quickly vaporize and quickly take away the heat. At this time, the vaporized water vapor still rises within the range covered by the water curtain. When the water vapor combines with the falling water curtain again, it can return to the drilling hole to vaporize again and take away the heat, thereby reducing water consumption, further saving resources, and improving the heat dissipation effect.

[0049] See also Figure 3 and Figure 6 The outer wall of the drill rod 22 is provided with a plurality of fixing grooves 5, the inner wall of the fixing groove 5 is installed with a second spring 51, a speed reduction block 52 is installed at one end of the second spring 51, a pressure sensing component 9 is installed on the inner wall of the storage chamber 31, the pressure sensing component 9 includes two fixing cylinders 90 installed on the inner wall of the storage chamber 31, a trigger rod 91 is installed through the outer wall of the storage chamber 31, a third spring 92 is installed around the outer wall of the trigger rod 91, a speed reduction plate 93 is installed at one end of the trigger rod 91, and the speed reduction plate 93 is at the same height as the speed reduction block 52, a sliding plate 94 is installed at one end of the trigger rod 91, and the sliding plate 94 slides inside the fixing cylinder 90.

[0050] Specifically, when the pressure in the storage chamber 31 is too high, the pressure in the storage chamber 31 increases, so that the pressure on the sliding plate 94 inside the fixed cylinder 90 increases, and then the air pressure pushes the sliding plate 94 to move, and the sliding plate 94 drives the trigger rod 91 to move, and at this time the third spring 92 contracts, and the trigger rod 91 drives the deceleration plate 93 to extend;

[0051] It should be noted that the increase in pressure in the storage chamber 31 indicates that the rotation speed of the drill rod 22 is too high, which will affect the drilling effect. Therefore, the drill rod 22 needs to be decelerated. Therefore, when the rotation speed of the drill rod 22 is too high, the speed at which the air pump 4 pressurizes the storage chamber 31 will be greater than the speed at which the spray pipe 24 releases pressure to the outside. This will cause the air pressure in the storage chamber 31 to continue to increase. The increased air pressure will push the deceleration plate 93 to extend. At the same time, the rotation speed of the drill rod 22 is too fast, resulting in an increase in centrifugal force. At this time, the deceleration block 52 moves outward and pulls the second spring 51 to extend. When the deceleration block 52 begins to contact the deceleration plate 93, it will block the rotation of the drill rod 22, thereby achieving a deceleration effect by hindering the movement of the drill rod 22, so that the drill rod 22 can work at a reasonable speed and realize the function of automatic deceleration.

[0052] See also Figure 7 , Figure 8 , Fig. 9 and Fig.10A protective shell 61 is installed on the outer wall of the fixing ring 6, an adjusting motor 62 is installed on the inner wall of the protective shell 61, a supporting plate 63 is installed on the output end of the adjusting motor 62, a T-shaped adjusting plate 64 is installed on the top of the supporting plate 63, a clamping plate 7 is movably connected above the adjusting plate 64, a fixing frame 71 is installed on the bottom of the clamping plate 7, an adjusting shaft 72 is installed on the outer wall of the fixing frame 71, and the adjusting shaft 72 is connected to the top of the adjusting plate 64, two electric telescopic rods 73 are installed on the bottom of the adjusting plate 64, a plurality of motors 8 are installed on the outer wall of the clamping plate 7, a reciprocating screw 81 is installed on the output end of the motor 8, a clamping block 82 is threadedly connected to the outer wall of the reciprocating screw 81, four clamping grooves 83 are opened on the top of the clamping plate 7, and the clamping block 82 slides inside the clamping groove 83.

[0053] Specifically, the main wing of the drone is placed on the clamping plate 7, and then the motor 8 works to drive the reciprocating screw 81 to rotate, and the reciprocating screw 81 drives the clamping block 82 to move, and the clamping blocks 82 are close to each other to clamp the main wing of the drone, thereby realizing the clamping and fixing function;

[0054] It should be noted that during the processing, it may be necessary to drill holes on the side or other surfaces of the drone's main wing. At this time, the adjusting motor 62 can be started, and the adjusting motor 62 drives the support plate 63 to rotate, and then drives the clamping plate 7 to rotate, so as to rotate the drone's main wing to facilitate drilling. In addition, the electric telescopic rod 73 can be automatically electrically extended and shortened to drive the clamping plate 7 to rotate around the adjusting shaft 72, thereby adjusting the angle of the drone's main wing and realizing multi-degree-of-freedom processing functions.

[0055] Working principle: first, put the main wing of the UAV on the clamping plate 7, then the motor 8 works to drive the reciprocating screw 81 to rotate, the reciprocating screw 81 drives the clamping block 82 to move, the clamping blocks 82 are close to each other to clamp the main wing of the UAV, and realize the clamping and fixing function, then when drilling the main wing of the UAV, start the drive motor 21, the drive motor 21 works to drive the drill rod 22 to rotate, then start the hydraulic lifting rod 20, so that the hydraulic lifting rod 20 drives the drill rod 22 to move downward, thereby realizing the processing and drilling function of the main wing of the UAV, when using When using the device, the drill rod 22 first works for a period of time, at which time the drill rod 22 drives the No. 1 gear 30 to rotate, the No. 1 gear 30 drives the No. 2 gear 33 to rotate, the No. 2 gear 33 drives the driven rod 32 to rotate, the driven rod 32 drives the cam 34 to rotate, and when the cam 34 rotates, it will reciprocate and collide with the impact plate 43 and squeeze the impact plate 43. At this time, the movement of the impact plate 43 drives the moving rod 42 to move, and the movement of the moving rod 42 drives the first spring 44 to extend. At the same time, the sealing plate 45 moves inside the air pump 4. Before the sealing plate 45 moves, the outside The air enters the interior of the air pump 4 through the air inlet 27 and the air suction hole 41. When the sealing plate 45 starts to move, the sealing plate 45 squeezes the air inside the air pump 4, causing the pressure inside the air pump 4 to increase. Then the air enters the storage chamber 31 through the second one-way valve 47, causing the pressure in the storage chamber 31 to increase. Finally, before starting work, the water pump in the water tank 15 will pump water into the storage chamber 31, and the first one-way valve will block the water in the storage chamber 31 from flowing back. After the storage chamber 31 is pressurized, the water in the storage chamber 31 The pressure will continue to increase, and water will be sprayed outward through the spray pipe 24. At this time, the pressure increases, and the aperture in the spray pipe 24 gradually decreases, so that the water in the pipe is atomized and diffuses downward. When the rotation speed of the drill rod 22 reaches the standard speed, the speed of pressure release from the spray pipe 24 to the outside is the same as the speed at which the air pump 4 pressurizes the storage chamber 31. At this time, multiple spray pipes 24 will form an atomized water curtain around the drill rod 22, blocking the dust and particulate matter generated by the carbon fiber material when the drill rod 22 is drilling, preventing dust from spreading, and protecting the staff.

[0056] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0057] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements all fall within the scope of the present invention to be protected.

Claims

1. A multi-degree-of-freedom drilling device for the main wing beam of an unmanned aerial vehicle, characterized in that: It comprises a base (1), a drilling assembly (2) and a driving assembly (3); A drilling assembly (2) is installed above the base (1), and a driving assembly (3) is installed inside the drilling assembly (2); The drilling assembly (2) comprises a driving motor (21) installed above the base (1), a hydraulic lifting rod (20) is installed below the driving motor (21), a drilling rod (22) is installed at the bottom of the hydraulic lifting rod (20), a circular fixture (23) is installed on the outer wall of the drilling rod (22), a plurality of spray pipes (24) are installed around the outer wall of the fixture (23), a blocking strip (25) is installed on the inner wall of the spray pipe (24), and the blocking strip (25) gradually reduces the aperture of the spray pipe (24), a water inlet pipe (26) is installed on the top of the fixture (23), a first one-way valve is installed on the outer wall of the water inlet pipe (26), and a plurality of air inlet holes (27) are opened at the bottom of the fixture (23).

2. The multi-degree-of-freedom drilling device for the main wing beam of an unmanned aerial vehicle according to claim 1, characterized in that: A plurality of fixing bolts (11) are installed through the top of the base (1), a fixing column (12) is installed on the top of the base (1), a fixing ring (6) is installed on the outer wall of the fixing column (12), a connector (13) is installed on the top of the fixing column (12), and one end of the connector (13) is fixedly connected to the outer wall of the drive motor (21), a handle (14) is installed on the top of the connector (13), a water tank (15) is installed on the back of the connector (13), and a water pump is arranged inside the water tank (15), and the output end of the water pump is connected to one end of the water inlet pipe (26).

3. The multi-degree-of-freedom drilling device for the main wing beam of an unmanned aerial vehicle according to claim 1, characterized in that: The driving assembly (3) comprises a first gear (30) mounted on the outer wall of the drill rod (22); a storage chamber (31) is mounted on the inner wall of the holder (23); a driven rod (32) is mounted at the bottom of the storage chamber (31); a second gear (33) is mounted on the outer wall of the driven rod (32); the first gear (30) is meshed with the second gear (33); and a cam (34) is mounted on the outer wall of the driven rod (32).

4. The multi-degree-of-freedom drilling device for the main wing beam of an unmanned aerial vehicle according to claim 3, characterized in that: An air pump (4) is installed at the bottom of the storage chamber (31), and an air suction hole (41) is opened at the bottom of the air pump (4). A moving rod (42) is installed through the outer wall of the air pump (4), and an impact plate (43) is installed at one end of the moving rod (42). A first spring (44) is installed around the outer wall of the moving rod (42), and a sealing plate (45) is installed at one end of the moving rod (42). A pressurizing tube (46) is installed on the outer wall of the air pump (4), and one end of the pressurizing tube (46) extends into the interior of the storage chamber (31), and a second one-way valve (47) is installed on the outer wall of the pressurizing tube (46).

5. The multi-degree-of-freedom drilling device for the main wing beam of an unmanned aerial vehicle according to claim 1, characterized in that: The outer wall of the drill rod (22) is provided with a plurality of fixing grooves (5), the inner wall of the fixing groove (5) is provided with a second spring (51), and a speed reduction block (52) is provided at one end of the second spring (51).

6. The multi-degree-of-freedom drilling device for the main wing beam of an unmanned aerial vehicle according to claim 3, characterized in that: The inner wall of the storage chamber (31) is installed with a pressure sensing component (9), the pressure sensing component (9) comprises two fixed cylinders (90) installed on the inner wall of the storage chamber (31), a trigger rod (91) is installed through the outer wall of the storage chamber (31), a third spring (92) is installed around the outer wall of the trigger rod (91), a deceleration plate (93) is installed at one end of the trigger rod (91), and the deceleration plate (93) and the deceleration block (52) are at the same height, and a sliding plate (94) is installed at one end of the trigger rod (91), and the sliding plate (94) slides inside the fixed cylinder (90).

7. The multi-degree-of-freedom drilling device for the main wing beam of an unmanned aerial vehicle according to claim 2, characterized in that: The outer wall of the fixing ring (6) is provided with a protective shell (61), the inner wall of the protective shell (61) is provided with an adjusting motor (62), the output end of the adjusting motor (62) is provided with a supporting plate (63), the top of the supporting plate (63) is provided with a T-shaped adjusting plate (64), and the upper part of the adjusting plate (64) is movably connected with a clamping plate (7).

8. The multi-degree-of-freedom drilling device for the main wing beam of an unmanned aerial vehicle according to claim 7, characterized in that: A fixing frame (71) is installed at the bottom of the clamping plate (7), an adjusting shaft (72) is installed on the outer wall of the fixing frame (71), and the adjusting shaft (72) is connected to the top end of the adjusting plate (64), and two electric telescopic rods (73) are installed at the bottom of the adjusting plate (64).

9. The multi-degree-of-freedom drilling device for the main wing beam of an unmanned aerial vehicle according to claim 7, characterized in that: A plurality of motors (8) are installed on the outer wall of the clamping plate (7), a reciprocating screw rod (81) is installed on the output end of the motor (8), a clamping block (82) is connected to the outer wall of the reciprocating screw rod (81) via a thread, four clamping grooves (83) are opened on the top of the clamping plate (7), and the clamping block (82) slides inside the clamping groove (83).

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