CN210000598U - Spraying assembly and unmanned aerial vehicle with same - Google Patents

Abstract

The utility model discloses an kinds of spray assembly and unmanned aerial vehicle who has it, including the spray lance, the length of spray lance is adjustable, the spray lance forms to hollow structure, the spray lance has stiff end and free end, the shower nozzle is established the free end of spray lance, liquid conveying pipe's end is located in the spray lance and with the shower nozzle link to each other in order to shower nozzle transport liquid the utility model discloses a spray assembly, the length of spray lance is adjustable, can make to spray that the object receives the medicine more even on degree, can fully spray the liquid medicine to the crown layer inside of fruit tree or crops, and then can improve spray assembly's the efficiency of spraying effectively, improve the effect of spraying assembly spraying liquid medicine.

Description

Spraying assembly and unmanned aerial vehicle with same

Technical Field

The utility model belongs to the technical field of the technique of plant protection equipment and specifically relates to relate to kinds of unmanned aerial vehicle that sprays the subassembly and have it.

Background

Agricultural unmanned aerial vehicle as the key for opening agricultural intellectualization develops rapidly with the advantages of high operating efficiency, good effect, time saving, drug saving, worry saving and the like in recent years, is gradually accepted and recognized by agricultural practitioners, and is widely applied to plant protection spraying operation of various crops.

At present, an agricultural unmanned aerial vehicle has an obvious effect on the spraying operation of leveling short field crops (such as wheat, rice, cotton and the like), but is directly limited by the factors of fruit tree shapes, heights, canopy leaf density and the like in the fruit tree spraying aspect, the operation effect is poor, fruit trees are different from the short field crops, th fruit trees are scattered and distributed like fruit trees, the fruit trees in an orchard are often different in tree height and crown growth shapes, the low field crops are not neat and flat in growth and compact in arrangement, most of the fruit trees planted are not flat plains but fluctuated hilly mountains, if the unmanned aerial vehicle is used for spraying operation like a field operation mode, three-dimensional crown surfaces are difficult to uniformly receive pesticide (in the specification, pesticide is sprayed on the surface of a spraying object), gaps between the fruit trees are large, the fruit trees are difficult to be sprayed, a large amount of pesticide can be deposited on empty lands when the unmanned aerial vehicle is used for spraying operation in the field crops, resources are wasted, the second fruit trees are densely sprayed with pesticide on the surface, even if the fruit trees are sprayed with the fruit trees, the fruit trees are often sprayed with the trunk, and the fruit trees are difficult to be sprayed with the aerial vehicle, even if the unmanned aerial vehicle is used for spraying liquid medicine, the fruit trees, the trunk of the fruit trees and the fruit trees are difficult to directly attached to the fruit trees, the trunk of the unmanned aerial vehicle is difficult to directly attached to the fruit trees, the fruit trees.

For the point, a fruit tree spraying mode is developed by existing plant protection unmanned aerial vehicle enterprises on the market aiming at the characteristics of growth form, distribution, growth topography and the like of fruit trees, the mode is used for spraying at fixed points of each fruit tree in an orchard, an unmanned aerial vehicle flies above a crown of the fruit tree and sprays rotationally around the whole crown, the unmanned aerial vehicle closes a spraying system after trees are sprayed, flies above the crown of a lower fruit trees to be sprayed, and then the spraying system is opened to spray, the mode can greatly and three-dimensionally improve the pesticide receiving uniformity of the crown and reduce the pesticide waste.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving of the technical problem who exists among the prior art at least, for this, the utility model discloses a aim at provides kinds of spray assemblies, and the length of spray rod is adjustable, can make to spray that the object receives the medicine more even to degree, can fully spray the liquid medicine to the canopy of fruit tree or crops inside, and then can improve the efficiency of spraying the subassembly effectively, improve the effect of spraying subassembly spraying liquid medicine.

The utility model discloses kinds of unmanned aerial vehicle are still proposed, including foretell spraying assembly.

The utility model provides a spray assembly, including the spray lance, the length of spray lance is adjustable, the spray lance forms into hollow structure, the spray lance has stiff end and free end, the shower nozzle is established at the free end of spray lance, liquid conveying pipe, the end of liquid conveying pipe is located in the spray lance and with the shower nozzle links to each other in order to liquid is carried to the shower nozzle.

According to the utility model discloses spray the subassembly, through making the length of shower nozzle adjustable to can make the medicine that receives that sprays the object more even to degree, can fully spray the liquid medicine to the canopy of fruit tree or crops inside, and then can improve effectively and spray the efficiency of spraying of subassembly, improve the effect of spraying subassembly spraying liquid medicine.

According to some embodiments of the present invention at , the liquid delivery tube is adjustable in length.

In embodiments of the present invention, the length of the portion of the liquid delivery tube located within the spray bar is adjustable.

In of the present invention, the liquid delivery tube is formed as a retractable hose.

In the embodiments of the present invention, the liquid delivery pipe includes a delivery pipe and a second delivery pipe, the end of the second delivery pipe is connected to the sprayer, and the other end of the second delivery pipe is inserted into the delivery pipe and slidably connected to the delivery pipe.

According to the utility model discloses an some embodiments, the spray lance includes the pump body, body and cylinder body, the pump body with the body is located the relative both sides of cylinder body and respectively with the cylinder body intercommunication, the pump body is used for filling fluid in to the cylinder body or follow suction fluid in the cylinder body, the body is movably established in the cylinder body, the shower nozzle is established keeping away from of body the end of the pump body, when the pump body to when filling fluid in the cylinder body, part of body stretches out towards the direction of keeping away from the pump body the cylinder body, when the pump body suction fluid in the cylinder body, the body is towards retract in the cylinder body.

According to embodiments of the present invention, at least portions of the spray head are provided within the spray bar.

In , the spray head is a hydraulic spray head, the hydraulic spray head is located in the spray rod, and a spray nozzle opposite to the spray nozzle of the hydraulic spray head is arranged on the circumferential wall of the spray rod.

The utility model discloses an some embodiments, the shower nozzle is centrifugal spray nozzle, centrifugal spray nozzle includes shower nozzle body and centrifugal spray disk, the shower nozzle body is located in the spray lance and with the liquid conveying pipe links to each other, centrifugal spray disk is located the outside of spray lance and with the shower nozzle body links to each other.

In the embodiments of the present invention, the nozzle is formed as a centrifugal nozzle, the centrifugal nozzle is located in the spray rod, the peripheral wall of the spray rod is provided with a liquid outlet opposite to the centrifugal spray disk of the centrifugal nozzle, the spraying assembly further comprises a protective cover, the protective cover is covered on the free end of the spray rod and is pieces with the spray rod.

According to the utility model discloses an some embodiments, it still includes electrically controlled device to spray the subassembly, electrically controlled device with the spray lance links to each other in order to control the length of spray lance.

According to of some embodiments of the present invention, the other end of the liquid delivery tube extends from the fixed end of the spray bar.

According to the utility model discloses unmanned aerial vehicle, include: a body; spray the subassembly, it is according to spray the subassembly of the utility model discloses above-mentioned embodiment, spray the subassembly and be connected to on the fuselage.

According to the utility model discloses unmanned aerial vehicle is through setting up the basis the utility model discloses the subassembly that sprays of above-mentioned embodiment to can make the medicine that receives that sprays the object more even to degree, can fully spray the liquid medicine to the canopy of fruit tree or crops inside, and then can improve unmanned aerial vehicle's the efficiency of spraying effectively, improve the effect of unmanned aerial vehicle spraying liquid medicine.

According to the utility model discloses an some embodiments, unmanned aerial vehicle still includes the horn on the length direction of horn the horn has end and second end, the horn the end with the fuselage links to each other, the second end of horn and/or be equipped with on the fuselage spray the subassembly.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic view of embodiments of a spray assembly according to the present invention;

FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1;

fig. 3 is an exploded view of a spray assembly according to embodiments of the present invention;

fig. 4 is a partial schematic view of a spray assembly according to embodiments of the present invention;

FIG. 5 is a sectional view taken in the direction B-B in FIG. 4;

fig. 6 is a schematic view illustrating the spraying process of the spraying assembly for spraying liquid medicine onto fruit trees, wherein the spraying head is a centrifugal spraying head;

fig. 7 is a schematic view illustrating the spraying process of the spraying assembly for spraying liquid medicine onto fruit trees, wherein the spraying head is a pressure type spraying head;

fig. 8 is a schematic illustration of length adjustment of the spray bar according to embodiments of the present invention;

fig. 9 is a schematic diagram of an unmanned aerial vehicle according to embodiments of the present invention;

fig. 10 is a schematic diagram of a drone according to embodiments of the present invention .

Reference numerals:

a spray assembly 100;

a spray rod 1; a fixed end 1 a; a free end 1 b; a spout 11; a tubular body 12; a cylinder body 13;

a spray head 2; a head body 211; a centrifugal spray disk 212;

a liquid delivery pipe 3;

a protective cover 5; a centrifugal outlet 51;

an unmanned aerial vehicle 1000;

a body 200;

a horn 300, an th end 300a, a second end 300 b;

400 of fruit trees;

rotor assembly 500.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

A spray assembly 100 according to an embodiment of the present invention is described below with reference to fig. 1-8. Wherein spray subassembly 100 can be used to plant protection equipment such as unmanned aerial vehicle 1000, agricultural robot and spray work in order to realize plant protection equipment. The use of the spray assembly 100 in the drone 1000 is described in detail below as an example.

As shown in fig. 1-8, a spray assembly 100 according to an embodiment of the present invention includes: spray bar 1, spray head 2 and liquid delivery tube 3.

Specifically, the length of the spray rod 1 is adjustable, the spray rod 1 is formed in a hollow structure, and the spray rod 1 has a fixed end 1a and a free end 1 b. As can be seen, when the length of the spray bar 1 changes, the distance between the fixed end 1a and the free end 1b of the spray bar 1 also changes. When the spray bar 1 is extended, the distance between the fixed end 1a and the free end 1b of the spray bar 1 is increased, and when the spray bar 1 is shortened, the distance between the fixed end 1a and the free end 1b of the spray bar 1 is decreased.

The spray head 2 is arranged at the free end 1b of the spray bar 1. It will thus be seen that spray head 2 is located at the free end 1b of spray bar 1 and is movable in synchronism with spray bar 1. When the spray bar 1 is extended, the distance between the spray head 2 and the fixed end 1a of the spray bar 1 is increased, and when the spray bar 1 is shortened, the distance between the spray head 2 and the fixed end 1a of the spray bar 1 is decreased. Wherein, the fixed end 1a can be connected with the body 200 or the arm 300 of the unmanned aerial vehicle 1000. Thus, when the length of spray lance 1 changes, can make the shower nozzle 2 change with the fuselage 200 of unmanned aerial vehicle 1000 or the distance of horn 300 isotructure, and then under the circumstances that the fuselage 200 of unmanned aerial vehicle 1000 did not reciprocate, can reciprocate shower nozzle 2 in order to spray the liquid medicine to the different positions of spraying the object.

The end of the liquid delivery pipe 3 is located in the spray bar 1 and connected with the spray head 2 to deliver liquid to the spray head 2. therefore, the end of the liquid delivery pipe 3 is located in the spray bar 1 and connected with the spray head 2, so that the liquid delivery pipe 3 can be protected at , the liquid delivery pipe 3 can deliver liquid to the spray head 2 more smoothly and is prevented from being interfered by other parts or external objects, the spraying reliability of the spraying assembly 100 is improved, and the occupied space of the spraying assembly 100 is reduced.

Use the utility model discloses spray assembly 100 to be used for unmanned aerial vehicle 1000 back to spray the liquid medicine to fruit tree 400 and explain below.

Under the spraying mode of the fruit tree 400, the unmanned aerial vehicle 1000 is controlled to fly to the position right above the fruit tree 400 needing to be sprayed with the liquid medicine, and the fruit tree 400 is hovered after the surface of a canopy (dense top layer of forest branches and leaves) of the fruit tree 400 is sprayed in a rotating mode. The length of the spray bar 1 is then adjusted to extend the length of the spray bar 1, and the spray heads 2 can extend down the fruit tree 400 as the spray bar 1 extends. When the spray head 2 moves downwards along with the spray rod 1 to enter a tree crown (a part above a trunk and collecting branches and leaves), the spray head 2 is opened to spray liquid medicine to the fruit tree 400, the spray head 2 gradually extends downwards along with the gradual extension of the spray rod 1, and the liquid medicine can be continuously sprayed to the fruit tree 400 in the process of extending downwards, so that the liquid medicine can be sprayed to the middle lower part of the fruit tree 400 from the crown layer to the crown layer. Therefore, the inner part of the crown, the leaf back and the trunk of the fruit tree 400 can receive the medicine. Thereby improving the actual spraying efficiency of the spray assembly 100 and the effectiveness of the spray solution.

It should be noted that, the distance that spray lance 1 is elongated can spray the crown depth of object according to the reality and input in advance and spray the operation parameter, and unmanned aerial vehicle 1000's electrically controlled device can control the distance that spray lance 1 downwardly extending according to the spraying depth of input to scan formula spraying from the top down is carried out to crown inside in the vertical direction, and spray lance 1 extends to the back and begins to contract back to the end, and shrink in-process shower nozzle 2 can continue to spray also can close (according to the actual required medicine yield of fruit tree 400 and decide). Thereby making the use of the drone 1000 and the spraying operation of the spray assembly 100 more flexible and controllable.

In conclusion, the utility model discloses spray assembly 100, adjustable through the length that makes spray lance 1 to can make the medicine that receives that sprays the object more even to degree, for example can make the canopy of fruit tree 400, inside the crown, the back of the leaf and trunk all can receive the medicine, thereby can fully spray the liquid medicine to the canopy of fruit tree 400 or crops inside, and then can improve the efficiency of spraying that sprays assembly 100 effectively, improve the effect of spraying assembly 100 spraying liquid medicine.

According to the utility model discloses spray subassembly 100, adjustable through the length that makes spray lance 1 to can make the medicine that receives that sprays the object more even to degree, can fully spray the liquid medicine to the crown layer inside of fruit tree 400 or crops, and then can improve effectively spray subassembly 100 spray efficiency, improve the effect of spraying subassembly 100 spraying liquid medicine.

According to the utility model discloses a some embodiments, liquid conveying pipe 3's length is adjustable from this, liquid conveying pipe 3 can cooperate the length of spray lance 1, when the length of spray lance 1 increases, liquid conveying pipe 3's length also can increase, when the length of spray lance 1 shortens, liquid conveying pipe 3's length also can shorten, can prevent effectively from liquid conveying pipe 3 because the length change of spray lance 1 and be elongated deformation or crowded short deformation, can guarantee the reliability of liquid conveying pipe 3's structure, and then guarantee liquid conveying pipe 3 to the reliability of shower nozzle 2 transport liquid, improve the reliability of spraying assembly 100.

The embodiments of the present invention can adjust the length of the liquid delivery pipe 3 inside the spray bar 1, so that the length of the liquid delivery pipe 3 inside the spray bar 1 can be matched with the length of the spray bar 1, when the length of the spray bar 1 is increased, the length of the liquid delivery pipe 3 inside the spray bar 1 can be increased, when the length of the spray bar 1 is shortened, the length of the liquid delivery pipe 3 inside the spray bar 1 can be shortened, thereby effectively preventing the liquid delivery pipe 3 from being elongated or extruded due to the length change of the spray bar 1, ensuring the reliability of the structure of the liquid delivery pipe 3, ensuring the reliability of the liquid delivery pipe 3 to the spray head 2, and improving the reliability of the spray assembly 100.

In the embodiments of the present invention, the liquid delivery tube 3 is formed as a flexible tube, for example, as shown in fig. 2 and 3, a bellows is provided, so that the length of the liquid delivery tube 3 can be adjusted, and the reliability of the liquid delivery tube 3 to the spray head 2 can be ensured.

In the embodiments of the present invention, the liquid delivery tube 3 includes a delivery tube and a second delivery tube, the 0 end of the second delivery tube is connected to the nozzle 2, and the other end of the second delivery tube is inserted into the delivery tube and slidably connected to the delivery tube, therefore, the length adjustment of the liquid delivery tube 3 is achieved by sliding the second delivery tube relative to the delivery tube, when the liquid delivery tube 3 is extended, the end of the second delivery tube connected to the nozzle 2 moves in a direction away from the delivery tube, and when the liquid delivery tube 3 is shortened, the end of the second delivery tube connected to the nozzle 2 moves in a direction close to the delivery tube.

According to the utility model discloses an some embodiments, at least part of shower nozzle 2 is established in spray lance 1 from this, can know, shower nozzle 2 can all be established in spray lance 1, also can only part be established in spray lance 1, thereby be favorable to protecting shower nozzle 2, prevent to to a certain extent that spray assembly 100 from spraying the condition such as the shower nozzle 2 appears scraping with spraying the object when working, improve the reliability of the structure of spray assembly 100, simultaneously when spray assembly 100 is idle, be favorable to reducing the occupation space of spray assembly 100, reduce the labour of user's clean shower nozzle 2. need to explain here, how much that shower nozzle 2 established in spray lance 1 need be injectd according to the concrete structure of shower nozzle, for example when shower nozzle 2 is hydraulic formula shower nozzle 2, shower nozzle 2 can all be established in spray lance 1, also can only part be established in spray lance 1. for another example, when shower nozzle 2 is centrifugal formula shower nozzle 2, shower nozzle 2 can only have part to set up in 1, in order to guarantee that centrifugal shower nozzle 2 can normally spray the liquid medicine, then centrifugal spray disk 212 of centrifugal shower nozzle 2 can not establish in spray lance 1.

As shown in fig. 7, in the embodiments of of the present invention, the spray head 2 is a hydraulic spray head, the hydraulic spray head is located in the spray rod 1, and the peripheral wall of the spray rod 1 is provided with the nozzles 11 facing the nozzles of the hydraulic spray head, so as to know that the liquid medicine sprayed from the nozzles of the hydraulic spray head can be sprayed out through the nozzles 11 on the spray rod 1, thereby facilitating the protection of the hydraulic spray head, and improving the reliability of the structure of the spray assembly 100. it should be noted that the size of the nozzles 11 can be set according to the model of the hydraulic spray head actually selected, so long as it is ensured that the liquid medicine sprayed from the nozzles of the hydraulic spray head can be sprayed out through the nozzles 11. when the spray heads 2 are multiple, the peripheral wall of the spray rod 1 can be provided with multiple nozzles 11, the multiple nozzles 11 can be set corresponding to the nozzles of the multiple spray heads 2, thereby improving the spraying efficiency of the spray assembly 100.

As shown in fig. 2, fig. 3 and fig. 6, in the embodiments of the present invention, the nozzle 2 is a centrifugal nozzle, the centrifugal nozzle includes a nozzle body 211 and a centrifugal spray plate 212, the nozzle body 211 is located in the spray rod 1 and connected to the liquid conveying pipe 3, the centrifugal spray plate 212 is located outside the spray rod 1 and connected to the nozzle body 211, then, the process of spraying the liquid medicine by the nozzle 2 is that after the liquid medicine flows from the nozzle body 211 to the centrifugal spray plate 212, the centrifugal spray plate 212 is driven by the motor connected to the centrifugal spray plate 212 to rotate at a high speed, so that the liquid medicine in the centrifugal spray plate 212 is thrown out from the centrifugal spray plate 212 with an acceleration under the effect of centrifugal force to form fine mist drops, and then the liquid medicine is sprayed onto the spraying object, the nozzle body 211 is located in the spray rod 1, and the structure setting of the centrifugal spray plate 212 located outside the spray rod 1 can not only protect the centrifugal nozzle 2 to a certain extent at , but also ensure that the centrifugal nozzle 2.

As shown in fig. 1-5, in embodiments of the present invention, the spraying assembly 100 further includes a protection cover 5, the protection cover 5 covers the centrifugal spraying plate 212, and the protection cover 5 is provided with a centrifugal outlet 51 on a portion of the protection cover 5 aligned with the spraying direction of the centrifugal spraying plate 212. it is known that most branches and leaves of the crown layer of the fruit tree 400 are densely covered, and the flat centrifugal spraying plate 212 is easily blocked by a small branch when entering the interior of the crown layer along with the extension of the spray rod 1 and cannot smoothly go deep into the crown, or the centrifugal spraying plate 212 is easily caught by a branch when gradually rising away from the crown layer along with the shortening of the spray rod 1. meanwhile, the centrifugal spraying plate 212 rotating at a high speed is easily damaged after contacting the branches and leaves, so the protection cover 5 of the embodiment of the present invention can effectively protect the centrifugal spraying plate 212, effectively avoid the centrifugal spraying plate 212 from being caught or blocked by the branch when entering or exiting the interior of the crown layer, and can further extend the service life of the spraying assembly 100 to a certain extent at .

Alternatively, as shown in fig. 1 to 5, the outer wall surface of the protective cover 5 is formed in a spherical surface shape. Therefore, the friction force of the protective cover 5 when moving at the tree crown layer can be reduced, the protective cover 5 is effectively prevented from being hooked or blocked by the branches, and the branches of the fruit tree 400 damaged by the protective cover 5 can be reduced. The shape of the outer wall surface of the protective cover 5 is not limited to this, and may be other shapes as long as the protective cover 5 can protect the centrifugal nozzle plate 212.

Optionally, the protective cover 5 is removably attached to the spray bar 1. Thereby facilitating maintenance and replacement of the centrifugal nozzle 2. And also facilitates cleaning of the protective cover 5.

Alternatively, as shown in fig. 4 and 5, the protective cap 5 is screw-fitted to the spray bar 1. Therefore, the detachable connection mode of the protective cover 5 and the spray rod 1 is simple and reliable, and the protective cover 5 and the spray rod 1 are convenient to assemble and disassemble. For example, the outer peripheral wall of the nozzle bar 1 is provided with male threads, and the inner peripheral wall of the protective cover 5 is provided with female threads.

Optionally, the protective cover 5 is pieces integral with the spray bar 1 so that the production and assembly efficiency of the spray assembly 100 may be improved.

In the embodiments of the present invention, the nozzle 2 is formed as a centrifugal nozzle, the centrifugal nozzle is located in the spray rod 1, the peripheral wall of the spray rod 1 is provided with a liquid outlet facing the centrifugal spray disk 212 of the centrifugal nozzle, the spraying assembly 100 further comprises a protective cover 5, the protective cover 5 covers the free end of the spray rod 1 and is pieces with the spray rod 1, therefore, when the spraying assembly 100 works, the centrifugal spray disk 212 can rotate in the space defined by the spray rod 1, so that the liquid medicine in the centrifugal spray disk 212 is thrown out from the centrifugal spray disk 212 under the action of the centrifugal force to form fine mist drops, the fine mist drops can be thrown out through the liquid outlet on the spray rod 1, thereby the spraying operation of the spraying assembly 100 is realized, the centrifugal nozzle and the protective cover 5 are arranged, the centrifugal nozzle can be effectively protected, the centrifugal nozzle is effectively prevented from being hooked or blocked by a branch when the spray rod 1 comes in and goes out of the crown layer, and the service life of the spraying assembly 100 can be prolonged to a certain extent at .

According to some embodiments of the utility model discloses an , spray assembly 100 still includes electrically controlled device (not shown), and electrically controlled device links to each other with spray lance 1 in order to control the length of spray lance 1 from this, the length accessible electrically controlled device of spray lance 1 adjusts to make spray assembly 100's use more intelligent, can improve the convenience that the user used spray assembly 100 simultaneously.

According to , the other end of the liquid delivery tube 3 extends from the fixed end 1a of the spray bar 1. from this, it can be seen that the end of the liquid delivery tube 3, which is away from the spray head 2, extends from the fixed end 1a of the spray bar 1, thereby facilitating the connection of the liquid delivery tube 3 to a pump body or the like for delivering liquid into the spray head 2.

According to the utility model discloses an some embodiments, spray lance 1 includes the pump body (not shown), body 12 and cylinder 13, the pump body and body 12 are located the relative both sides of cylinder 13 and communicate with cylinder 13 respectively, the pump body is used for filling fluid in cylinder 13 or from suction fluid in cylinder 13, body 12 is movably established in cylinder 13, shower nozzle 2 is established at the end of body 12 of keeping away from the pump body, when the pump body fills fluid in cylinder 13, part of body 12 stretches out cylinder 13 towards the direction of keeping away from the pump body, when the fluid in the pump body suction cylinder 13, body 12 retracts towards cylinder 13.

Therefore, the length adjustment of the spray rod 1 can be realized through the piston type matching of the pump body, the pipe body 12 and the cylinder body 13, when the spray rod 1 needs to be extended, fluid can be filled into the cylinder body 13 through the pump body, so that the fluid pressure in the cylinder body 13 is increased, the pipe body 12 extends out of the cylinder body 13 towards the direction far away from the pump body under the action of pressure difference, and the spray head 2 moves under the driving of the pipe body 12. When the spray rod 1 needs to be shortened, fluid in the cylinder 13 can be sucked through the pump body, so that the pressure of the fluid in the cylinder 13 is reduced, the pipe body 12 is further moved towards the direction close to the pump body under the action of pressure difference to retract the cylinder 13, and the spray head 2 is driven by the pipe body 12 to move. This enables the length adjustment process of the spray bar 1. The structure of the spray bar 1 is reliable. It should be noted that the fluid is a generic term for gas and liquid, so that the pump body can be filled with gas (in this case, the pump body is a gas pump) like the cylinder 13, or can be filled with liquid (in this case, the pump body is a liquid pump) like the cylinder 13.

For example, as shown in fig. 8, the head 2 is fixed to the lowermost end of the spray bar 1, and the up-and-down movement of the head 2 is realized by controlling the extension and contraction of the spray bar 1 during operation. Taking a hydraulic (or pneumatic) boom 1 as an example, a tubular body 12 of the boom 1 is a piston-type sleeve. When the spray rod 1 needs to be extended, a liquid pump (or an air pump) is used for filling liquid (or inflating gas) into a cylinder body 13 connected with the piston type sleeve, and the piston type sleeve is pushed to move forwards through the action of hydraulic pressure (or air pressure) so as to achieve the extension of the spray rod 1. Conversely, when the spray bar 1 needs to be retracted, liquid (or gas) is pumped out of the cylinder 13 by the liquid pump (or the gas pump), negative pressure is formed in the cylinder 13, and the piston sleeve retracts to realize the contraction of the spray bar 1.

It should be noted that the spray bar 1 may use a spray bar 1 in the form of a hydraulic or pneumatic cylinder, and that an electric spray bar 1 or other spray bar 1 may also be used. As long as the length-adjustable reliability of the spray rod 1 is ensured.

As shown in fig. 1-10, the unmanned aerial vehicle 1000 according to the embodiment of the present invention comprises a main body 200 and a spraying assembly 100, wherein the spraying assembly 100 is the spraying assembly 100 according to the above-mentioned embodiment of the present invention, and the spraying assembly 100 is connected to the main body 200, so that the pesticide receiving of the spraying object can be more uniform to degree, for example, all of the canopy, the inside of the crown, the back of the leaf and the trunk of the fruit tree 400 can receive pesticide, thereby improving the spraying efficiency of the unmanned aerial vehicle 1000 and the effect of the unmanned aerial vehicle 1000 in spraying pesticide liquid, it should be noted that the way of connecting the spraying assembly 100 to the main body 200 is not limited, for example, the spraying assembly 100 can be directly arranged on the main body 200, and the spraying assembly 100 can also be connected to the main body 200 through other structures (for example, the arm 300) so long as to ensure the reliability of connecting the spraying assembly 100 to the main body 200.

According to the utility model discloses unmanned aerial vehicle 1000 is through setting up the basis the utility model discloses the subassembly 100 that sprays of above-mentioned embodiment to can make the medicine that receives that sprays the object more even to degree to a certain extent, improve unmanned aerial vehicle 1000's the efficiency of spraying, improve the effect of unmanned aerial vehicle 1000 spraying liquid medicine.

As shown in fig. 9-10, according to the embodiments of of the present invention, the unmanned aerial vehicle 1000 further includes a boom 300, the boom 300 has a th end 300a and a second end 300b in the length direction of the boom 300, the th end 300a of the boom 300 is connected to the main body 200, and the spraying assembly 100 is disposed on the second end 300b of the boom 300 and/or the main body 200, therefore, in the embodiments of the present invention, the spraying assembly 100 may be disposed only on the second end 300b of the boom 300, or the spraying assembly 100 may be disposed only on the main body 200, or the spraying assembly 100 may be disposed respectively on the second end 300b of the boom 300 and the main body 200, and at this time, the spraying assembly 100 is plural, so that the position of the spraying assembly 100 is more flexible, the position of the spraying assembly 100 may be set according to the actual situation of the unmanned aerial vehicle 1000, the position of the spraying assembly 100 may be set according to the application, at the same time, the utility model discloses an embodiment, the unmanned aerial vehicle 1000, by additionally installing the length of the unmanned aerial vehicle 1000, installing the spray head 2 at the free end 1b of the spray rod 1, the spray rod 1a suitable position of the spray rod is fixed at the position of the spray rod, the plant liquid medicine can be fixed end of the unmanned aerial vehicle 1000, and the plant fruit tree can be fixed end of the unmanned aerial vehicle 400, thereby the plant fruit tree can be fixed end of the unmanned aerial vehicle 400, the unmanned aerial.

Specifically, as shown in fig. 9 and 10, the drone 1000 further includes a rotor assembly 500, the rotor assembly 500 being disposed on the second end 300b of the horn 300, thereby ensuring normal flight of the drone 1000, the horn 300 being plural, the rotor assembly 500 being plural, the plurality of rotor assemblies 500 being disposed in correspondence with the plurality of horns 300 .

Other configurations and operations of the drone 1000 according to embodiments of the present invention are known to those of ordinary skill in the art and will not be described in detail herein.

In the description of the present invention, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the positional or positional relationships illustrated in the accompanying drawings for convenience in describing the invention only and to simplify the description, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be considered limiting of the invention.

In the description of the present invention, it should be noted that unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" shall be construed , for example, they may be fixedly connected, detachably connected, or physically connected, mechanically connected, electrically connected, directly connected, indirectly connected through an intermediate medium, and communicating between two elements.

In the description herein, reference to the terms " embodiments," " embodiments," "exemplary embodiments," "examples," "specific examples," or " examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least embodiments or examples of the invention.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims (14)

1. A spray assembly of the type , comprising:

   the length of the spray rod is adjustable, the spray rod is formed into a hollow structure, and the spray rod is provided with a fixed end and a free end;

   the spray head is arranged at the free end of the spray rod;

   a liquid delivery tube, an end of the liquid delivery tube being located within the spray bar and connected to the spray head to deliver liquid to the spray head.
2. 2. The spray assembly of claim 1 wherein said liquid delivery tube is adjustable in length.
3. 3. The spray assembly of claim 2 wherein the length of the portion of the liquid delivery tube located within the spray bar is adjustable.
4. 4. The spray assembly of claim 2 wherein said liquid delivery tube is formed as a flexible hose.
5. 5. The spray assembly of claim 2 wherein said fluid delivery tube comprises a th delivery tube and a second delivery tube, said second delivery tube having an end connected to said spray head, said second delivery tube having an end inserted into said th delivery tube and slidably connected to said th delivery tube.
6. 6. The spray assembly of claim 1 wherein said spray bar includes a pump body, a tube and a cylinder, said pump body and said tube being located on opposite sides of said cylinder and being in communication with said cylinder, respectively, said pump body being for filling or drawing fluid from said cylinder, said tube being movably disposed within said cylinder, said spray head being disposed at an end of said tube remote from said pump body,

   when the pump fills the cylinder with fluid, the portion of the tube extends out of the cylinder away from the pump, and retracts back toward the cylinder when the pump draws fluid from the cylinder.
7. 7. The spray assembly of claim 1 wherein at least portions of said spray head are disposed within said spray bar.
8. 8. The spray assembly of claim 7 wherein said spray head is a hydraulic spray head, said hydraulic spray head is located within said spray bar, said spray bar having a perimeter wall with spray orifices facing nozzles of said hydraulic spray head.
9. 9. The spray assembly of claim 7 wherein said spray head is a centrifugal spray head comprising a spray head body and a centrifugal spray disk, said spray head body being located within said spray bar and connected to said liquid delivery tube, said centrifugal spray disk being located outside of said spray bar and connected to said spray head body.
10. 10. The spray assembly of claim 7 wherein said spray head is formed as a centrifugal spray head located within said spray bar, said spray bar having a peripheral wall with liquid outlets disposed directly opposite the centrifugal spray discs of said centrifugal spray head, said spray assembly further comprising a protective shroud disposed about the free end of said spray bar and being -piece with said spray bar.
11. 11. The spray assembly of claim 1 further comprising an electrical control device connected to said spray bar to control the length of said spray bar.
12. 12. The spray assembly of claim 1 wherein the other end of the liquid delivery tube extends from the fixed end of the spray bar.
13. 13, unmanned aerial vehicle, including:

    a body;

    a spray assembly according to any of claims 1-12 and wherein said spray assembly is according to any of claims and wherein said spray assembly is attached to said fuselage.
14. 14. The unmanned aerial vehicle of claim 13, further comprising a horn, the horn having a th end and a second end in a length direction of the horn, the th end of the horn being connected to the fuselage, the second end of the horn and/or the fuselage being provided with the spray assembly.

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