阅读说明：本技术 一种农药损耗少的植保无人机 (Plant protection unmanned aerial vehicle that pesticide loss is few ) 是由 平步青 于 2020-04-15 设计创作，主要内容包括：本发明涉及一种农药损耗少的植保无人机,包括主体、起落架、药箱和四个飞行装置,还包括喷洒机构和防风机构,所述喷洒机构包括抽药管、驱动轴、浆叶、固定轴承、两个喷嘴和两个连接管,所述防风机构包括驱动组件、安装轴承、风杯、密封缸、活塞杆、两个摩擦盘、两个气缸、两个重力块和两个弹簧,所述驱动组件包括电机、第一齿轮和第二齿轮,该农药损耗少的植保无人机中,通过喷洒机构不仅可以喷洒农药,同时还可以对农药进行搅拌,提高了无人机喷洒农药的均匀度,通过防风机构使风力过大时,可以使无人机停止喷药,减少了无人机农药的损耗。(The invention relates to a plant protection unmanned aerial vehicle with low pesticide loss, which comprises a main body, an undercarriage, a pesticide box, four flying devices, a spraying mechanism and a wind prevention mechanism, wherein the spraying mechanism comprises a pesticide pumping pipe, a driving shaft, blades, a fixed bearing, two nozzles and two connecting pipes, the wind prevention mechanism comprises a driving assembly, a mounting bearing, a wind cup, a sealing cylinder, a piston rod, two friction discs, two air cylinders, two gravity blocks and two springs, the driving assembly comprises a motor, a first gear and a second gear, and in the plant protection unmanned aerial vehicle with low pesticide loss, pesticide can be sprayed through the spraying mechanism, pesticide can be stirred at the same time, the uniformity of pesticide spraying of the unmanned aerial vehicle is improved, when wind power is too large through the wind prevention mechanism, the unmanned aerial vehicle can stop spraying pesticide, and pesticide loss of the unmanned aerial vehicle is reduced.)

1. A plant protection unmanned aerial vehicle with less pesticide loss comprises a main body (3), an undercarriage (6), a pesticide box (5) and four flying devices (1), wherein the four flying devices (1) are circumferentially arranged around the main body (3), the pesticide box (5) and the undercarriage (6) are both installed at the bottom of the main body (3), the plant protection unmanned aerial vehicle is characterized by further comprising a spraying mechanism and a windproof mechanism, a cavity is formed in the main body (3), and the spraying mechanism and the windproof mechanism are both installed in the main body (3);

the spraying mechanism comprises a pesticide pumping pipe (18), a driving shaft (11), a paddle (20), a fixed bearing (21), two nozzles (4) and two connecting pipes (10), the medicine extracting pipe (18) is arranged on the inner wall of the bottom of the main body (3), the bottom end of the medicine extracting pipe (18) is arranged at the bottom of the inside of the medicine box (5), the driving shaft (11) and the medicine pumping pipe (18) are coaxially arranged, the paddle (20) is arranged inside the bottom end of the medicine pumping pipe (18), one end of the driving shaft (11) is fixedly connected with the paddle (20), the other end of the driving shaft (11) is connected with the other end of the medicine pumping pipe (18) through a fixed bearing (21), the two nozzles (4) are respectively and fixedly connected with the two sides of the main body (3), and the two nozzles (4) are communicated with the other end of the medicine pumping pipe (18) through a connecting pipe (10);

the windproof mechanism comprises a driving assembly, a mounting bearing (9), an air cup (2), a sealing cylinder (8), a piston rod (22), two friction disks (13), two air cylinders (16), two gravity blocks (7) and two springs (17), wherein the sealing cylinder (8) and the piston rod (22) are coaxially arranged with a driving shaft (11), one end of the sealing cylinder (8) is connected with the top end of the main body (3) through the mounting bearing (9), the air cup (2) is fixedly connected with one end of the sealing cylinder (8), one end of the piston rod (22) is arranged inside the other end of the sealing cylinder (8), the piston rod (22) is connected with the sealing cylinder (8) in a sliding and sealing manner, the driving assembly is mounted at the other end of the sealing cylinder (8), the driving assembly is connected with the piston rod (22), and the two friction disks (13) are arranged oppositely, the two friction discs (13) are respectively installed at the other end of the piston rod (22) and one end, far away from the paddle (20), of the driving shaft (11) and fixedly connected, the axis of the air cylinder (16) is perpendicular to the axis of the sealing cylinder (8), the two air cylinders (16) are symmetrically arranged relative to the sealing cylinder (8), the cylinder body of the air cylinder (16) is fixedly connected with the sealing cylinder (8), the cylinder body of the air cylinder (16) is communicated with the sealing cylinder (8), the top end of an air rod of the air cylinder (16) is fixedly connected with the gravity block (7), the spring (17) is sleeved on the air cylinder (16), the gravity block (7) is fixedly connected with the sealing cylinder (8) through the spring (17), and the spring (17) is in a stretching state.

2. The plant protection unmanned aerial vehicle that pesticide loss is few of claim 1, characterized in that, be equipped with control panel on the main part (3), be equipped with display screen and at least two control button on the control panel, the inside of main part (3) is equipped with P L C, display screen and each control button all are connected with P L C electricity.

3. The plant protection unmanned aerial vehicle that pesticide loss is little of claim 1, characterized in that, the drive assembly includes motor (15), first gear (12) and second gear (14), motor (15) and sealed jar (8) fixed connection, motor (15) and second gear (14) transmission are connected, first gear (12) are installed on the one end of piston rod (22) far away from sealed jar (8), first gear (12) and second gear (14) meshing.

4. The plant protection unmanned aerial vehicle with less pesticide loss as defined in claim 1, characterized in that, the friction disc (13) is provided with anti-skid lines.

5. The plant protection unmanned aerial vehicle that pesticide loss is little of claim 1, characterized in that, piston rod (22) is coated with sealing grease.

6. The plant protection unmanned aerial vehicle that pesticide loss is little of claim 3, characterized in that, the motor (15) is servo motor.

7. The plant protection unmanned aerial vehicle that pesticide loss is little of claim 1, characterized in that, the preparation material of main part (3) is the aluminum alloy.

8. The plant protection unmanned aerial vehicle that pesticide loss is little of claim 1, characterized in that, scribble anticorrosive coating on the inner wall of medical kit (5).

9. The plant protection unmanned aerial vehicle that pesticide loss is little of claim 1, characterized in that, be equipped with the sealing washer on the inner wall of the one end of taking out pencil (18) far away from medical kit (5), take out pencil (18) and pass through the sealing washer and be connected with drive shaft (11) sealing.

10. The plant protection unmanned aerial vehicle that pesticide loss is little of claim 1, characterized in that, the inside of the one end of drawing the pencil (18) that is close to medical kit (5) is equipped with filter screen (19).

Technical Field

The invention relates to the field of agricultural equipment, in particular to a plant protection unmanned aerial vehicle with less pesticide loss.

Background

Agricultural equipment refers to various machines used in the production process of crop planting and animal husbandry, as well as in the primary processing and treatment process of agricultural and animal products. Agricultural machinery includes agricultural power machinery, farmland construction machinery, soil farming machinery, planting and fertilizing machinery, plant protection machinery, farmland irrigation and drainage machinery, crop harvesting machinery, agricultural product processing machinery, animal husbandry machinery, agricultural transportation machinery and the like. Unmanned aerial vehicle plays an important role as one kind of agricultural equipment in the pesticide spraying process.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: in order to overcome prior art's not enough, provide a plant protection unmanned aerial vehicle that pesticide loss is few.

The technical scheme adopted by the invention for solving the technical problems is as follows: a plant protection unmanned aerial vehicle with less pesticide loss comprises a main body, an undercarriage, a pesticide box and four flying devices, wherein the four flying devices are circumferentially arranged around the main body, the pesticide box and the undercarriage are both arranged at the bottom of the main body, the plant protection unmanned aerial vehicle also comprises a spraying mechanism and a wind-proof mechanism, a cavity is arranged in the main body, and the spraying mechanism and the wind-proof mechanism are both arranged in the main body;

the spraying mechanism comprises a medicine pumping pipe, a driving shaft, a paddle, a fixed bearing, two nozzles and two connecting pipes, wherein the medicine pumping pipe is installed on the inner wall of the bottom of the main body, the bottom end of the medicine pumping pipe is arranged at the bottom of the inside of the medicine box, the driving shaft and the medicine pumping pipe are coaxially arranged, the paddle is arranged inside the bottom end of the medicine pumping pipe, one end of the driving shaft is fixedly connected with the paddle, the other end of the driving shaft is connected with the other end of the medicine pumping pipe through the fixed bearing, the two nozzles are respectively and fixedly connected with the two sides of the main body, and the two nozzles are both communicated with the other end of the medicine pumping pipe through the connecting pipes;

the windproof mechanism comprises a driving assembly, a mounting bearing, an air cup, a sealing cylinder, a piston rod, two friction discs, two air cylinders, two gravity blocks and two springs, wherein the sealing cylinder and the piston rod are coaxially arranged with the driving shaft, one end of the sealing cylinder is connected with the top end of the main body through the mounting bearing, the air cup is fixedly connected with one end of the sealing cylinder, one end of the piston rod is arranged inside the other end of the sealing cylinder, the piston rod is connected with the sealing cylinder in a sliding and sealing manner, the driving assembly is arranged at the other end of the sealing cylinder, the driving assembly is connected with the piston rod, the two friction discs are arranged oppositely, the two friction discs are respectively arranged at the other end of the piston rod and one end, far away from the paddle, of the driving shaft and fixedly connected with the other end of the driving shaft, the axis of the air cylinders is vertical to the axis of the sealing cylinder, the cylinder body and the sealed jar intercommunication of cylinder, the top and the gravity piece fixed connection of the gas pole of cylinder, the spring housing is established on the cylinder, the gravity piece passes through spring and sealed jar fixed connection, the spring is in tensile state.

Preferably, in order to improve unmanned aerial vehicle's degree of automation, be equipped with control panel in the main part, last display screen and two at least control button of being equipped with of control panel, the inside of main part is equipped with P L C, display screen and each control button all are connected with P L C electricity.

Preferably, in order to provide power for the piston rod, the driving assembly comprises a motor, a first gear and a second gear, the motor is fixedly connected with the sealing cylinder, the motor is in transmission connection with the second gear, the first gear is installed on one end of the piston rod far away from the sealing cylinder, and the first gear is meshed with the second gear.

Preferably, the friction disc is provided with anti-slip threads in order to reduce the probability of the friction disc slipping.

Preferably, the piston rod is coated with a sealing grease in order to improve the sealing performance between the piston rod and the sealing cylinder.

Preferably, the motor is a servo motor in order to improve the accuracy of the rotational speed control of the piston rod.

Preferably, the main body is made of an aluminum alloy in order to improve the heat dissipation performance of the main body.

Preferably, in order to prolong the service life of the medicine chest, the inner wall of the medicine chest is coated with an anti-corrosion coating.

Preferably, in order to improve the sealing performance between the medicine extracting pipe and the driving shaft, a sealing ring is arranged on the inner wall of one end, far away from the medicine box, of the medicine extracting pipe, and the medicine extracting pipe is connected with the driving shaft in a sealing mode through the sealing ring.

Preferably, a filter screen is provided inside one end of the medicine suction pipe close to the medicine box in order to filter the medicine liquid inside the medicine box.

The plant protection unmanned aerial vehicle with less pesticide loss has the advantages that the spraying mechanism can spray pesticides and can stir the pesticides simultaneously, the uniformity of pesticide spraying of the unmanned aerial vehicle is improved, compared with the existing spraying mechanism, the spraying mechanism is simple in structure, the number of fault points of the mechanism is reduced, the fault rate of the mechanism is reduced, and moreover, when wind power is too large, the unmanned aerial vehicle can stop spraying the pesticides through the windproof mechanism, the pesticide loss of the unmanned aerial vehicle is reduced.

Drawings

The invention is further illustrated with reference to the following figures and examples.

Fig. 1 is a schematic structural view of the plant protection unmanned aerial vehicle with less pesticide loss of the invention;

fig. 2 is a cross-sectional view of the plant protection unmanned aerial vehicle with less pesticide loss of the present invention;

FIG. 3 is a schematic structural diagram of a wind-proof mechanism of the plant protection unmanned aerial vehicle with less pesticide loss according to the present invention;

fig. 4 is a schematic structural view of a spraying mechanism of the plant protection unmanned aerial vehicle with less pesticide loss, provided by the invention;

in the figure: 1. the flying device comprises a flying device body, a wind cup, a main body, a nozzle, a medicine box, a landing gear, a gravity block, a sealing cylinder, a mounting bearing, a connecting pipe, a driving shaft, a first gear, a friction disc, a second gear, a motor, a cylinder, a spring, a medicine pumping pipe, a filter screen, a paddle, a fixed bearing and a piston rod, wherein the flying device body comprises 2 parts of a wind cup, 3 parts of a main body, 4 parts of a nozzle, 5 parts of a medicine box, 6 parts of a landing gear, 7 parts of a gravity block, 8 parts of a sealing cylinder, 9 parts of.

Detailed Description

The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic views illustrating only the basic structure of the present invention in a schematic manner, and thus show only the constitution related to the present invention.

As shown in fig. 1, the plant protection unmanned aerial vehicle with less pesticide loss comprises a main body 3, an undercarriage 6, a pesticide box 5 and four flying devices 1, wherein the four flying devices 1 are circumferentially arranged around the main body 3, the pesticide box 5 and the undercarriage 6 are both arranged at the bottom of the main body 3, the plant protection unmanned aerial vehicle also comprises a spraying mechanism and a wind-proof mechanism, a cavity is arranged in the main body 3, and the spraying mechanism and the wind-proof mechanism are both arranged in the main body 3;

the spraying mechanism can spray pesticide, and can stir the pesticide, so that the uniformity of pesticide spraying of the unmanned aerial vehicle is improved, and moreover, when the wind power is too large, the unmanned aerial vehicle can stop spraying pesticide, and the pesticide loss of the unmanned aerial vehicle is reduced;

as shown in fig. 2 and 4, the spraying mechanism includes a medicine extracting pipe 18, a driving shaft 11, a paddle 20, a fixed bearing 21, two nozzles 4 and two connecting pipes 10, the medicine extracting pipe 18 is mounted on the inner wall of the bottom of the main body 3, the bottom end of the medicine extracting pipe 18 is arranged at the bottom of the inside of the medicine box 5, the driving shaft 11 and the medicine extracting pipe 18 are coaxially arranged, the paddle 20 is arranged inside the bottom end of the medicine extracting pipe 18, one end of the driving shaft 11 is fixedly connected with the paddle 20, the other end of the driving shaft 11 is connected with the other end of the medicine extracting pipe 18 through the fixed bearing 21, the two nozzles 4 are respectively fixedly connected with two sides of the main body 3, and the two nozzles 4 are both communicated with the other end of the medicine extracting pipe 18 through the connecting pipes 10;

as shown in fig. 3, the wind-proof mechanism comprises a driving assembly, a mounting bearing 9, an air cup 2, a sealing cylinder 8, a piston rod 22, two friction disks 13, two air cylinders 16, two gravity blocks 7 and two springs 17, wherein the sealing cylinder 8 and the piston rod 22 are both arranged coaxially with a driving shaft 11, one end of the sealing cylinder 8 is connected with the top end of the main body 3 through the mounting bearing 9, the air cup 2 is fixedly connected with one end of the sealing cylinder 8, one end of the piston rod 22 is arranged inside the other end of the sealing cylinder 8, the piston rod 22 is connected with the sealing cylinder 8 in a sliding and sealing manner, the driving assembly is arranged at the other end of the sealing cylinder 8, the driving assembly is connected with the piston rod 22, the two friction disks 13 are arranged oppositely, the two friction disks 13 are respectively arranged at the other end of the piston rod 22 and one end of the driving shaft 11 far away from the paddle 20, the axis of the air cylinder 16, the two air cylinders 16 are symmetrically arranged about the sealing cylinder 8, the cylinder body of each air cylinder 16 is fixedly connected with the sealing cylinder 8, the cylinder body of each air cylinder 16 is communicated with the sealing cylinder 8, the top end of an air rod of each air cylinder 16 is fixedly connected with the gravity block 7, the spring 17 is sleeved on the air cylinder 16, the gravity block 7 is fixedly connected with the sealing cylinder 8 through the spring 17, and the spring 17 is in a stretching state;

under the supporting action of the mounting bearing 9, the stability of the sealing cylinder 8 is improved, and further the stability of the piston rod 22 is improved, and simultaneously under the supporting action of the fixed bearing 21, the stability of the driving shaft 11 is improved, power is provided through the driving assembly, under the action of the friction force between the two friction disks 13, the driving shaft 11 is driven to rotate through the piston rod 22, then the driving shaft 11 drives the paddles 20 to rotate, power is provided through the paddles 20, pesticides in the pesticide box 5 are extracted through the pesticide extracting pipe 18, then the pesticides are conveyed to the nozzle 4 through the connecting pipe 10, then the pesticides are sprayed onto crops through the nozzle 4, meanwhile, the pesticides are stirred through the paddles 20, the uniformity of the pesticides is improved, and further the uniformity of the pesticides sprayed by the unmanned aerial vehicle is improved, the wind power drives the wind cup 2 to rotate, then the sealing cylinder 8 is driven to rotate through the wind cup 2, simultaneously drive cylinder 16 through sealed jar 8 and rotate, when wind-force is greater than the setting value, the centrifugal force of gravity piece 7 is greater than spring 17's elasticity, then under the effect of gravity piece 7's centrifugal force, make cylinder 16 extend, then can be with inside the air suction cylinder 16 of sealed jar 8, then under the effect of atmospheric pressure, make piston rod 22 to the inside removal of sealed jar 8, make two friction disks 13 separate, and then make paddle 20 stall, make nozzle 4 stop spraying the pesticide, the loss of pesticide has been reduced, unmanned aerial vehicle's practicality has been improved, when wind-force reduces, make cylinder 16 reset through spring 17, make piston rod 22 to the outside removal of sealed jar 8, make two friction disks 13 support each other and lean on, make unmanned aerial vehicle can normal use.

Preferably, in order to improve the automation degree of the unmanned aerial vehicle, a control panel is arranged on the main body 3, a display screen and at least two control keys are arranged on the control panel, a P L C is arranged inside the main body 3, and the display screen and the control keys are electrically connected with the P L C;

the P L C programmable logic controller adopts a programmable memory for storing program therein, executing logic operation, sequence control, timing, counting and arithmetic operation and other user-oriented instructions, and controlling various types of machinery or production processes through digital or analog input/output, and is essentially a computer special for industrial control, the hardware structure of the controller is basically the same as that of a microcomputer, and the controller is generally used for data processing and instruction receiving and outputting and is used for realizing central control, an operator sends a control signal to the P L C through a control key, and controls the unmanned aerial vehicle to run through the P L C, and simultaneously, the working state of the unmanned aerial vehicle can be displayed through a display screen, so that the automation degree of the unmanned aerial vehicle is improved.

As shown in fig. 4, the driving assembly includes a motor 15, a first gear 12 and a second gear 14, the motor 15 is fixedly connected with the sealing cylinder 8, the motor 15 is in transmission connection with the second gear 14, the first gear 12 is mounted on one end of the piston rod 22 far away from the sealing cylinder 8, and the first gear 12 is meshed with the second gear 14;

the second gear 14 is driven to rotate by the motor 15, and the piston rod 22 is driven to rotate by the second gear 14 under the driving action of the first gear 12.

Preferably, in order to reduce the probability of the friction disc 13 slipping, the friction disc 13 is provided with anti-slip threads;

the anti-slip threads reduce the slip probability between the two friction discs 13, and improve the stability of the connection of the piston rod 22 and the drive shaft 11.

Preferably, in order to improve the sealing performance between the piston rod 22 and the sealing cylinder 8, the piston rod 22 is coated with sealing grease;

the clearance between the piston rod 22 and the seal cylinder 8 is reduced by the seal grease, and the sealing performance between the piston rod 22 and the seal cylinder 8 is improved.

Preferably, the motor 15 is a servo motor in order to improve the accuracy of the rotational speed control of the piston rod 22.

Preferably, in order to improve the heat dissipation performance of the main body 3, the main body 3 is made of an aluminum alloy;

the aluminum alloy has good heat conduction performance, so that the heat dissipation efficiency of the main body 3 is improved.

Preferably, in order to prolong the service life of the medicine boxes 5, the inner walls of the medicine boxes 5 are coated with an anti-corrosion coating;

the corrosion speed of the medicine box 5 is slowed down through the anti-corrosion coating, and the service life of the medicine box 5 is prolonged.

Preferably, in order to improve the sealing performance between the medicine extracting pipe 18 and the driving shaft 11, a sealing ring is arranged on the inner wall of one end of the medicine extracting pipe 18 away from the medicine box 5, and the medicine extracting pipe 18 is connected with the driving shaft 11 in a sealing way through the sealing ring;

the clearance between the driving shaft 11 and the medicine extracting pipe 18 is reduced by the sealing ring, and the sealing performance between the medicine extracting pipe 18 and the driving shaft 11 is improved.

Preferably, a filter screen 19 is provided inside one end of the medicine suction pipe 18 close to the medicine box 5 in order to filter the medicine liquid inside the medicine box 5;

the impurity in the liquid medicine is filtered by the filter screen 19, so that the probability of blockage of the nozzle 4 is reduced.

Provide power through the drive assembly, under the effect of the frictional force between two friction discs 13, drive shaft 11 through piston rod 22 and rotate, then drive shaft 11 drive paddle 20 through the rotation, provide power through paddle 20, spray the agricultural chemicals on crops through nozzle 4, stir the agricultural chemicals through paddle 20 simultaneously, the degree of consistency of agricultural chemicals has been improved, and then the degree of consistency that unmanned aerial vehicle sprayed the agricultural chemicals has been improved, drive the cup 2 through wind-force and rotate, then drive sealed jar 8 through cup 2 and rotate, simultaneously drive cylinder 16 through sealed jar 8 and rotate, when wind-force is greater than the setting value, the centrifugal force of gravity piece 7 is greater than the elasticity of spring 17, then under the effect of the centrifugal force of gravity piece 7, make cylinder 16 extension, then can be with sealed jar 8 inside air suction cylinder 16 inside, then under the effect of atmospheric pressure, make piston rod 22 to sealed jar 8 inside removal, then two friction disks 13 are separated, and further the paddle 20 stops rotating, so that the nozzle 4 stops spraying pesticide, pesticide loss is reduced, and practicability of the unmanned aerial vehicle is improved.

Compared with the prior art, this plant protection unmanned aerial vehicle that the pesticide loss is few, not only can spray the pesticide through the sprinkling mechanism, can also stir the pesticide simultaneously, the degree of consistency that unmanned aerial vehicle sprayed the pesticide has been improved, compare with current sprinkling mechanism, this sprinkling mechanism simple structure, the quantity of this mechanism fault point has been reduced, the fault rate of this mechanism has been reduced, moreover, make wind-force too big through preventing wind the mechanism, can make unmanned aerial vehicle stop spouting the medicine, the loss of unmanned aerial vehicle pesticide has been reduced, compare with current mechanism of preventing wind, should prevent wind the mechanism and detect the wind speed through pure mechanical structure, the reliability of this mechanism has been improved.

In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations will be apparent to those skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.