Jet device and unmanned aerial vehicle

Abstract

The invention relates to the technical field of fire fighting equipment, and provides a spraying device and an unmanned aerial vehicle, and the spraying device comprises a fire fighting connector, a fixing assembly, a spraying assembly and a driving assembly. The fire-fighting connector is mounted to the unmanned aerial vehicle; the fixing assembly comprises a fixing part and a connecting pipe, and the connecting pipe is installed on the fixing part and connected with the fire-fighting connector through a connecting pipe. The spraying assembly comprises a supporting pipe set and a spraying pipe set, and the supporting pipe set is connected with the connecting pipe and can rotate relative to the connecting pipe; the injection pipe set is connected with the supporting pipe set and can rotate relative to the supporting pipe set. The driving assembly comprises a deflection driving part, a pitching driving part and a direction conversion part, the direction conversion part is arranged on the supporting pipe set, the deflection driving part is connected with the direction conversion part, the fixed end of the pitching driving part is connected with the direction conversion part, and the driving end of the pitching driving part is connected with the injection pipe set. In the deflection or pitching adjustment process, the position of the connecting pipe is always kept unchanged, and stable flow speed can be provided.

Description

Technical Field

[0001] The present invention relates to the technical field of fire fighting equipment, and in particular to a spray device and a drone. Background Art

[0002] The spray device is used on a drone to accurately deliver the fire extinguishing agent to the fire extinguishing area to meet different rescue scenarios. In the spray device of the related art, the fire extinguishing agent is connected to the fire fighting joint through a flexible hose, and the flexible hose moves with the driving component of the spray device. This makes the flexible hose easily squeezed and deformed during the yaw and pitch adjustment of the driving component, thereby changing the flow area of ​​the flexible hose and causing the medium flow rate in the flexible hose to be unstable. Summary of the invention

[0003] A first aspect of the present invention provides an injection device to solve the above-mentioned technical defects in the prior art. During the yaw or pitch adjustment process, the position of the connecting pipe always remains fixed, so as to provide a stable flow rate.

[0004] A second aspect of the present invention provides a drone.

[0005] A first aspect of the present invention provides a spraying device, comprising a fire fighting joint, a fixing assembly, a spraying assembly and a driving assembly.

[0006] The fire-fighting connector is suitable for installation on a drone; The fixing assembly includes a fixing component and a connecting pipe, wherein the fixing component is suitable for being installed on the drone, the connecting pipe is installed on the fixing component, and the connecting pipe is connected to the fire fighting joint through a connecting pipe; The injection assembly includes a support pipe group and an injection pipe group, wherein the support pipe group is connected to the connection pipe and can rotate relative to the connection pipe; the injection pipe group is connected to the support pipe group and can rotate relative to the support pipe group; The driving assembly includes a yaw driving component, a pitch driving component and an azimuth conversion component. The azimuth conversion component is arranged on the supporting pipe group. The yaw driving component is suitable for being installed on the UAV and connected to the azimuth conversion component. The fixed end of the pitch driving component is connected to the azimuth conversion component, and the driving end of the pitch driving component is connected to the injection pipe group.

[0007] According to the spray device provided by the present invention, the orientation conversion member comprises a conversion body, a support portion and a first connection portion; The conversion body is sleeved on the outside of the support tube group and fixedly connected to the support tube group. The support part is connected to the conversion body and is tilted relative to the conversion body. The first connection part is connected to an end of the support part facing away from the conversion body. The plane where the first connection part is located is parallel to the plane where the conversion body is located. The yaw driving component is connected to the conversion body, and the fixed end of the pitch driving component is connected to the first connecting portion.

[0008] According to the spray device provided by the present invention, the fixing component comprises a fixing piece and a supporting seat, the fixing piece is suitable for being mounted on the drone, and the supporting seat is fixed to the fixing piece; A first limiting member is disposed on one of the first connecting portion and the supporting seat, and a first guiding member that cooperates with the first limiting member to limit a position is disposed on the other of the first connecting portion and the supporting seat.

[0009] According to the injection device provided by the present invention, a second connecting portion is provided on the conversion body, and the deflection driving component is connected to the second connecting portion.

[0010] According to the spraying device provided by the present invention, on the same projection plane, the center line of the first connecting part and the center line of the second connecting part coincide with each other.

[0011] According to the injection device provided by the present invention, the connecting pipe is provided with a shaft shoulder, and the shaft shoulder is sleeved with a fixing seat; A second limiting member is disposed on one of the second connecting portion and the fixing seat, and a second guiding member that cooperates with the second limiting member to limit the position is disposed on the other of the second connecting portion and the fixing seat.

[0012] According to the injection device provided by the present invention, the support tube group includes a support tube, a first rotating component and a second rotating component; The support tube includes a first tube body and a second tube body connected to each other, the first tube body and the second tube body are vertically arranged, the first tube body is connected to the connecting tube through the first rotating component; the second tube body is connected to the injection tube group through the second rotating component.

[0013] According to the injection device provided by the present invention, the first rotating component and the second rotating component each include an inner ring, an outer ring, a rolling body and a retaining frame, the rolling body is arranged on the retaining frame, the retaining frame is arranged between the inner ring and the outer ring, and the inner ring and the outer ring can rotate relatively; The inner ring is provided with an inner ring extension portion, the inner ring extension portion extends into the connecting tube or the supporting tube, and is respectively interference-fitted with the connecting tube or the supporting tube; The outer ring is provided with an outer ring extension portion, and the outer ring extension portion extends into the support tube or the injection tube group and is respectively interference-fitted with the support tube or the injection tube group.

[0014] According to the spraying device provided by the present invention, the spraying pipe group includes a spray pipe and an intermediate connecting pipe, the intermediate connecting pipe is connected to the second rotating component, and the spray pipe is fixedly connected to the intermediate connecting pipe; The driving end of the pitch driving component is connected to the nozzle through a clamp.

[0015] A second aspect of the present invention provides a drone, comprising a drone body and any one of the spray devices described above, wherein the spray device is mounted to the drone body.

[0016] The spray device provided by the present invention directly or indirectly installs the fire-fighting joint and the connecting pipe to the unmanned aerial vehicle, keeps the positions of the fire-fighting joint and the connecting pipe fixed, connects the fire-fighting joint and the connecting pipe through a connecting pipe to replace the original flexible hose of the spray device, and the position of the connecting pipe always remains fixed, which is equivalent to taking the fire extinguishing agent directly from the fire-fighting joint through the connecting pipe and the connecting pipe. The spray assembly includes a support pipe group and a spray pipe group, the support pipe group is connected to the connecting pipe and can rotate relative to the connecting pipe; the spray pipe group is connected to the support pipe group and can rotate relative to the support pipe group. At the same time, an azimuth conversion member is provided on the support pipe group, so that the yaw drive component is connected to the azimuth conversion member, the fixed end of the pitch drive component is connected to the azimuth conversion member, and the driving end of the pitch drive component is connected to the spray pipe group.

[0017] When the injection device performs yaw adjustment, the yaw driving component drives the azimuth conversion component to rotate, and the azimuth conversion component drives the support pipe group to rotate relative to the connecting pipe, and the pitch driving component drives the injection pipe group to rotate with the azimuth conversion component, so that the position of the injection pipe group is deflected. When the injection device performs pitch adjustment, the pitch driving component directly drives the injection pipe group to rotate, so that the position of the injection pipe group changes in pitch, and the position of the azimuth conversion component remains unchanged. In the process of yaw or pitch adjustment of the injection device provided by the present invention, the position of the connecting pipe always remains fixed, which can provide a stable flow rate, and can effectively prevent the connecting pipe from being squeezed and deformed due to participation in the movement, so that its flow area changes, resulting in unstable flow rate of the internal medium.

[0018] The drone provided by the present invention has all the above advantages because it includes the above-mentioned spray device. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 It is a schematic structural diagram of an injection device provided in an embodiment of the present invention.

[0021] Figure 2 It is a schematic diagram of the partial structure of an injection device provided in an embodiment of the present invention.

[0022] Figure 3 This is one of the schematic diagrams of the use state of a spray device provided by an embodiment of the present invention when viewed from above.

[0023] Figure 4 This is the second schematic diagram of the use state of a spray device provided by an embodiment of the present invention when viewed from above.

[0024] Figure 5 This is one of the schematic diagrams of the use status of a spray device in the main viewing direction provided by an embodiment of the present invention.

[0025] Figure 6 This is the second schematic diagram of the use status of a spray device in the main viewing direction provided by an embodiment of the present invention.

[0026] Figure 7 It is a schematic diagram of the assembly of the orientation conversion member in the injection device provided in an embodiment of the present invention.

[0027] Figure 8 It is a partial cross-sectional view of an injection device provided by an embodiment of the present invention.

[0028] Reference numerals: 10. Fire protection joint; 20. fixing assembly; 21. fixing member; 211. fixing member; 212. supporting seat; 213. first guide member; 22. connecting pipe; 221. first interface; 222. second interface; 223. shaft shoulder; 23. fixing seat; 231. second guide member; 30. Spray assembly; 31. Support pipe group; 311. Support pipe; 3111. First pipe body; 3112. Second pipe body; 312. First rotating component; 313. Second rotating component; 32. Spray pipe group; 321. Spray pipe; 322. Intermediate connecting pipe; 323. Clamp; 40. driving assembly; 41. yaw driving component; 42. pitch driving component; 43. azimuth conversion component; 431. conversion body; 432. support part; 433. first connecting part; 434. second connecting part; 435. first stopper; 436. second stopper; 50. Connecting pipe. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are 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.

[0030] In the description of the embodiments of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0031] In the embodiments of the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0032] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" 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 embodiments of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0033] Figure 1 It is a schematic structural diagram of an injection device provided in an embodiment of the present invention. Figure 2 It is a schematic diagram of the partial structure of an injection device provided in an embodiment of the present invention.

[0034] See also Figure 1 and Figure 2 The embodiment of the present invention provides a spraying device, which is applied to a UAV to form a firefighting UAV in a dedicated firefighting scenario, and accurately delivers a fire extinguishing agent (which may be water, etc.) to a firefighting area to meet different rescue scenarios. The spraying device includes a firefighting joint 10, a fixing component 20, a spraying component 30, and a driving component 40.

[0035] The fire connector 10 is installed on the drone through a support and other structures. The support can be integrally formed with the fire connector 10, or the support and the fire connector 10 can be two independent components, which are then assembled together to form an integral structure. The fire structure is provided with two interfaces, which can be vertically arranged. One interface is used to connect to the supply equipment of the fire extinguishing agent, and the other interface is connected to the connecting pipe 50 described below.

[0036] The fixing assembly 20 includes a fixing component 21 and a connecting pipe 22. The fixing component 21 is installed to the UAV through a structure such as screws. The fixing component 21 serves as a mounting carrier for the connecting pipe 22. The connecting pipe 22 is installed to the fixing component 21. The connecting pipe 22 is connected to the fire connector 10 through a connecting pipe 50. In other words, the connecting pipe 50 is used to connect the fire connector 10 and the connecting pipe 22. Since the fire connector 10 and the connecting pipe 22 are both directly or indirectly installed to the UAV, that is, the positions of the fire connector 10 and the connecting pipe 22 remain fixed, and therefore, the position of the connecting pipe 50 connected between the fire connector 10 and the connecting pipe 22 always remains fixed.

[0037] The spray assembly 30 includes a support tube group 31 and a spray tube group 32. The support tube group 31 is connected to the connection tube 22. The support tube group 31 can rotate relative to the connection tube 22, so that the spray tube group 32 can move in a horizontal position. The spray tube group 32 is connected to the support tube group 31. The spray tube group 32 can rotate relative to the support tube group 31, so that the spray tube group 32 can move in a pitch direction. Since the spray device needs to adjust the swing angle and pitch angle of the spray tube group 32, the swing angle and pitch angle can be adjusted by rotating the support tube group 31 relative to the connection tube 22 and the spray tube group 32 relative to the support tube group 31.

[0038] The driving assembly 40 includes a yaw driving component 41, a pitch driving component 42 and an azimuth conversion component 43. The azimuth conversion component 43 is arranged on the support pipe group 31. The fixed end of the yaw driving component 41 is mounted to the drone through a screw or other structure. The fixed end can be a support or other structure. The driving end of the yaw driving component 41 is connected to the azimuth conversion component 43 through a pin shaft. The fixed end of the pitch driving component 42 is connected to the azimuth conversion component 43 through a pin shaft or other structure, and the pitch driving component 42 can be rotated relative to the azimuth conversion component 43 within a certain angle range. The driving end of the pitch driving component 42 is connected to the injection pipe group 32.

[0039] Figure 3 This is one of the schematic diagrams of the use state of a spray device provided by an embodiment of the present invention when viewed from above. Figure 4 This is the second schematic diagram of the use state of a spray device provided by an embodiment of the present invention when viewed from above.

[0040] See also Figure 3 and Figure 4 When the yaw driving component 41 performs forward driving, the direction of the forward driving can be set arbitrarily. For example, when the yaw driving component 41 is an electric push rod, the direction in which the driving rod of the electric push rod extends is the positive direction. The yaw driving component 41 drives the azimuth conversion component 43 to rotate, and the azimuth conversion component 43 drives the support pipe group 31 to rotate relative to the connecting pipe 22. The pitch driving component 42 drives the injection pipe group 32 to rotate with the azimuth conversion component 43, so that the injection pipe group 32 is rotated. Figure 4 The position shown is Figure 3 Alternatively, when the yaw drive component 41 is driven in the reverse direction, that is, the direction in which the drive rod of the electric push rod is retracted is the reverse direction, the yaw drive component 41 drives the azimuth conversion component 43 to rotate, the azimuth conversion component 43 drives the support pipe group 31 to rotate relative to the connecting pipe 22, and the pitch drive component 42 drives the injection pipe group 32 to rotate with the azimuth conversion component 43, so that the injection pipe group 32 is rotated from Figure 3 The position shown is Figure 4 The position shown is deflected.

[0041] Figure 5 This is one of the schematic diagrams of the use status of a spray device in the main viewing direction provided by an embodiment of the present invention. Figure 6 This is the second schematic diagram of the use status of a spray device in the main viewing direction provided by an embodiment of the present invention.

[0042] See also Figure 5 and Figure 6 When the pitch driving component 42 performs forward driving, the direction of the forward driving can also be set arbitrarily. For example, when the pitch driving component 42 is an electric push rod, the direction in which the driving rod of the electric push rod extends is the positive direction, and the pitch driving component 42 directly drives the injection pipe group 32 to rotate, so that the injection pipe group 32 is rotated. Figure 5 The position shown is Figure 6 During this process, the position of the azimuth conversion member 43 remains unchanged. Alternatively, when the pitch driving member 42 performs reverse driving, the pitch driving member 42 drives the injection pipe group 32 to rotate, so that the injection pipe group 32 is Figure 6 The position shown is Figure 5 The position shown in FIG. 4 is subjected to pitch change. In this process, the position of the azimuth conversion member 43 remains unchanged.

[0043] It can be understood that the spraying device provided in the embodiment of the present invention is to directly or indirectly install the fire-fighting joint 10 and the connecting pipe 22 to the drone, keep the positions of the fire-fighting joint 10 and the connecting pipe 22 fixed, connect the fire-fighting joint 10 and the connecting pipe 22 through the connecting pipe 50 to replace the original flexible hose of the spraying device, and the position of the connecting pipe 50 is always kept fixed, which is equivalent to taking the fire extinguishing agent directly from the fire-fighting joint 10 through the connecting pipe 22 and the connecting pipe 50. And the spraying assembly 30 includes a support pipe group 31 and a spraying pipe group 32, the support pipe group 31 is connected to the connecting pipe 22 and can rotate relative to the connecting pipe 22; the spraying pipe group 32 is connected to the support pipe group 31 and can rotate relative to the support pipe group 31. At the same time, an azimuth conversion member 43 is arranged on the support pipe group 31, so that the yaw driving component 41 is connected to the azimuth conversion member 43, the fixed end of the pitch driving component 42 is connected to the azimuth conversion member 43, and the driving end of the pitch driving component 42 is connected to the spraying pipe group 32.

[0044] When the injection device performs yaw adjustment, the yaw driving component 41 drives the azimuth conversion component 43 to rotate, and the azimuth conversion component 43 drives the support pipe group 31 to rotate relative to the connecting pipe 22, and the pitch driving component 42 drives the injection pipe group 32 to rotate along with the azimuth conversion component 43, so that the position of the injection pipe group 32 is deflected. When the injection device performs pitch adjustment, the pitch driving component 42 directly drives the injection pipe group 32 to rotate, so that the position of the injection pipe group 32 changes in pitch, and the position of the azimuth conversion component 43 remains unchanged. In the process of yaw or pitch adjustment of the injection device provided in the embodiment of the present invention, the position of the connecting pipe 50 always remains fixed, which can provide a stable flow rate, and can prevent the connecting pipe 50 from being squeezed and deformed due to participation in the movement, so that its flow area changes, resulting in unstable flow rate of the internal medium.

[0045] Figure 7 It is a schematic diagram of the assembly of the orientation conversion member 43 in the injection device provided in an embodiment of the present invention.

[0046] See also Figure 7In some embodiments of the present invention, the orientation conversion member 43 includes a conversion body 431, a support portion 432 and a first connection portion 433. The conversion body 431, the support portion 432 and the first connection portion 433 are connected in sequence, which is equivalent to an integral molding arrangement of the orientation conversion member 43. The conversion body 431, the support portion 432 and the first connection portion 433 are three parts of the orientation conversion member 43.

[0047] The conversion body 431 has a structure similar to a collar. The conversion body 431 is sleeved on the outside of the support tube group 31. A threaded hole is provided on the side wall of the conversion body 431. A connection hole corresponding to the position of the threaded hole is provided on the support tube group 31. The conversion body 431 is penetrated by a set screw through the threaded hole and the connection hole, and the conversion body 431 is connected to the outer wall of the support tube group 31 to achieve a fixed connection with the support tube group 31. When the conversion body 431 rotates, the torque can be transmitted to the support tube group 31 to drive the support tube group 31 to rotate synchronously. In addition, when the support tube group 31 is made of a hard material, the conversion body 431 can also be fixedly connected with the support tube group 31 by interference fit.

[0048] The support part 432 is a prism or a cylindrical structure, and the support part 432 is tilted relative to the conversion body 431. The first connection part 433 is also a prism or a cylindrical structure, and the first connection part 433 is connected to the end of the support part 432 facing away from the conversion body 431, and the plane where the first connection part 433 is located is parallel to the plane where the conversion body 431 is located. In other words, the first connection part 433 and the conversion body 431 are connected through the support part 432, and the support part 432 makes the first connection part 433 and the conversion body 431 have a certain height difference, which facilitates the connection between the yaw driving component 41 and the pitch driving component 42.

[0049] It can be understood that the azimuth conversion member 43 provided in the embodiment of the present invention is equivalent to a follower member, which can drive the support pipe group 31 and the pitch driving member 42 installed thereon to rotate synchronously under the driving action of the yaw driving member 41. Therefore, the injection device can not only adjust the yaw angle of the injection pipe group 32 through the azimuth conversion member 43 and the support pipe group 31 under the driving action of the yaw driving member 41, but also directly adjust the pitch angle of the injection pipe group 32 through the driving action of the pitch driving member 42 on the basis of the yaw angle adjustment.

[0050] Continue reading Figure 7 In some embodiments of the present invention, the fixing component 21 includes a fixing member 211 and a support seat 212. The fixing member 211 is a plate-like structure, and the fixing member 211 is installed to the drone by means of screws and other structures. The support seat 212 is a disc-shaped structure, and the support seat 212 is fixed to the fixing member 211 by means of screws and other structures. The connecting pipe 22 can be fixedly connected to the support seat 212 by an end flange.

[0051] A first position-limiting member 435 is disposed on one of the first connection portion 433 and the support seat 212 , and a first guide member 213 that cooperates with the first position-limiting member 435 for position limiting is disposed on the other of the first connection portion 433 and the support seat 212 .

[0052] For example, a first position-limiting member 435 is provided on the first connection portion 433, and a first guide member 213 is provided on the support seat 212 to cooperate with the first position-limiting member 435 for position-limiting. The first position-limiting member 435 may be a bull's eye bearing, which is a bearing-like structure, and the first guide member 213 may be an arc-shaped track or slide groove, and the first guide member 213 is located on an arc with the center of the support seat 212 as the center and the center of the support seat 212 and the center of the first guide member 213 as the radius.

[0053] When the yaw driving component 41 drives the azimuth conversion component 43 to rotate, the azimuth conversion component 43 drives the support tube group 31 to rotate relative to the connecting tube 22, and the bull's eye bearing on the first connecting part 433 slides along the track or slide groove on the support seat 212. The bull's eye bearing and the support seat 212 cooperate to balance the force of the azimuth conversion component 43 and reduce the bending moment of the azimuth conversion component 43 and the support tube group 31 connected to the azimuth conversion component 43. On the one hand, it can prevent the azimuth conversion component 43 from twisting and improve the running accuracy and stability of the azimuth conversion component 43; on the other hand, it can provide a guiding effect for the first connecting part 433, so that the first connecting part 433 can drive the pitch driving component 42 to rotate synchronously along the preset path provided by the track or slide groove.

[0054] Of course, the first limiter 435 can also be disposed on the support seat 212, and the first guide member 213 can be correspondingly disposed on the first connecting portion 433. In addition, the first limiter 435 can also be a limiter pin or a limiter bead, and any limiter that can reduce friction with the track or the slide groove and avoid jamming is acceptable.

[0055] Continue reading Figure 7 In some embodiments of the present invention, the conversion body 431 is provided with a second connection portion 434, and the yaw driving component 41 is connected to the second connection portion 434. The second connection portion 434 can be understood as a component for connecting the yaw driving component 41, and the second connection portion 434 can be arranged opposite to the support portion 432.

[0056] In the case where the second connection part 434 is not specially provided, the yaw driving component 41 can also be directly connected to the corresponding position on the conversion body 431 through a pin or other structure. In the embodiment of the present invention, the second connection part 434 is provided on the conversion body 431, which not only facilitates the connection of the yaw driving component 41, but also prevents the yaw driving component 41 from interfering with the conversion body 431 during movement.

[0057] Continue reading Figure 7 In some embodiments of the present invention, on the same projection plane, the center line of the first connection part 433 and the center line of the second connection part 434 coincide with each other. This is equivalent to the orthographic projections of the first connection part 433 and the second connection part 434 being located on the same straight line, that is, the center lines of the first connection part 433 and the second connection part 434 are both located on a plane passing through the diameter of the conversion body 431.

[0058] In this arrangement, when the yaw driving component 41 drives the orientation conversion component 43 to rotate, the orientation conversion component 43 drives the support tube group 31 to rotate relative to the connecting tube 22, which makes the operation more convenient, the movement relationship more flexible, and the movement resistance smaller. If the center line of the first connecting part 433 and the center line of the second connecting part 434 do not coincide with each other on the orthographic projection plane, when the yaw driving component 41 drives the orientation conversion component 43 to rotate, the orientation conversion component 43 generates a certain torque on the support tube group 31, and the driving force borne by the yaw driving component 41 is relatively large, which may easily lead to insufficient driving force and unstable operation of the structure.

[0059] Continue reading Figure 7 In some embodiments of the present invention, a shaft shoulder 223 is provided on the connecting tube 22, and a fixing seat 23 is sleeved on the shaft shoulder 223. In other words, the connecting tube 22 has a first interface 221 and a second interface 222, and the center line of the first interface 221 and the center line of the second interface 222 are arranged vertically, that is, the first interface 221 and the second interface 222 extend and intersect each other; the first interface 221 is connected to the connecting tube 50, and the second interface 222 is connected to the supporting tube 311 of the supporting tube group 31.

[0060] The first interface 221 and the second interface 222 are both provided with a shoulder 223. The fixing seat 23 is a structure such as a clamp or a clamp ring that can be disassembled and connected. The fixing seat 23 is fixed to the shoulder 223 of the second interface 222 by screws for easy disassembly. The upper and lower sides of the fixing seat 23 are limited by the shoulder 223, and the structural stability is good. A second limiting member 436 is disposed on one of the second connecting portion 434 and the fixing seat 23 , and a second guiding member 231 that cooperates with the second limiting member 436 for limiting is disposed on the other of the second connecting portion 434 and the fixing seat 23 .

[0061] For example, a second limiting member 436 is provided on the second connection portion 434, and a second guide member 231 is provided on the fixed seat 23 to cooperate with the second limiting member 436 for limiting. The second limiting member 436 may be a bull's eye bearing, which is a bearing-like structure, and the second guide member 231 may be an arc-shaped track or slide groove, and the second guide member 231 is located on an arc with the center of the fixed seat 23 as the center and the center of the fixed seat 23 and the center of the second guide member 231 as the radius.

[0062] When the yaw drive component 41 drives the azimuth conversion component 43 to rotate, and the azimuth conversion component 43 drives the support tube group 31 to rotate relative to the connection tube 22, the bull's eye bearing on the second connection part 434 slides along the slide groove on the fixed seat 23. The bull's eye bearing and the fixed seat 23 cooperate to balance the force of the azimuth conversion component 43 and reduce the bending moment of the azimuth conversion component 43 and the support tube group 31 connected to the azimuth conversion component 43. On the one hand, it can prevent the azimuth conversion component 43 from twisting and improve the running accuracy and stability of the azimuth conversion component 43; on the other hand, it can provide a guiding effect for the second connection part 434, so that the second connection part 434 can rotate along the preset path provided by the track or slide groove.

[0063] Of course, the second limiter 436 can also be arranged on the fixing seat 23, and the second guide member 231 can be correspondingly arranged on the second connecting portion 434. In addition, the second limiter 436 can also be a limiter pin or a limiter bead, and any limiter that can reduce the friction with the track or the slide groove and avoid jamming is acceptable.

[0064] In the embodiment of the present invention, it is equivalent to that a limiting piece is provided on the first connecting part 433 and the second connecting part 434 on both sides of the conversion body 431, the limiting piece on the first connecting part 433 cooperates with the support seat 212 for limiting, and the limiting piece on the second connecting part 434 cooperates with the fixed seat 23 for limiting, so that the force condition of the orientation conversion part 43 can be balanced, the bending moment of the orientation conversion part 43 and the support pipe group 31 connected to the orientation conversion part 43 can be reduced, and the stability of the injection device can be improved.

[0065] In addition, a limiting member may be provided on the connection portion on any side of the conversion body 431 to provide unilateral limiting and support, which is determined according to actual usage.

[0066] Figure 8 It is a partial cross-sectional view of an injection device provided by an embodiment of the present invention.

[0067] Continue reading Figure 2 , and also see Figure 8 In some embodiments of the present invention, the support tube set 31 includes a support tube 311 , a first rotating component 312 and a second rotating component 313 .

[0068] The support tube 311 includes a first tube body 3111 and a second tube body 3112 that are connected to each other. The first tube body 3111 and the second tube body 3112 are vertically arranged, that is, the first tube body 3111 and the second tube body 3112 are connected to each other and arranged in an intersecting manner. The first tube body 3111 is connected to the connecting tube 22 through the first rotating component 312; the second tube body 3112 is connected to the injection tube group 32 through the second rotating component 313.

[0069] In the embodiment of the present invention, the first tube body 3111 of the support tube 311 and the connecting tube 22 are connected by the first rotating component 312, and the support tube 311 is rotated relative to the connecting tube 22; the second tube body 3112 of the support tube 311 and the injection tube group 32 are connected by the second rotating component 313, and the injection tube group 32 is rotated relative to the support tube 311, which can reduce the rotation resistance of each driving component, improve the control accuracy of each driving component, and enhance the control stability of the injection device.

[0070] The first rotating component 312 and the second rotating component 313 both include an inner ring, an outer ring, rolling elements and a retaining frame, the rolling elements are arranged in the retaining frame, the retaining frame is arranged between the inner ring and the outer ring, and the inner ring and the outer ring can rotate relative to each other. This is equivalent to the first rotating component 312 and the second rotating component 313 being similar to a bearing structure, which can provide a slewing support for the corresponding connection, but different from a bearing structure, because the first rotating component 312 and the second rotating component 313 also need to have good sealing properties.

[0071] The inner ring is provided with an inner ring extension portion, which can be a tube body. The inner ring extension portion extends into the connecting tube 22 or the support tube 311, and has an interference fit with the connecting tube 22 or the support tube 311 respectively; the outer ring is provided with an outer ring extension portion, which can also be a tube body. The outer ring extension portion extends into the support tube 311 or the injection tube group 32, and has an interference fit with the support tube 311 or the injection tube group 32 respectively.

[0072] For example, between the support tube 311 and the connecting tube 22 , the inner ring extension portion extends into the connecting tube 22 and has an interference fit with the connecting tube 22 , and the outer ring extension portion extends into the support tube 311 and has an interference fit with the support tube 311 .

[0073] Between the support tube 311 and the injection tube assembly 32 , the inner ring extension portion extends into the support tube 311 and has an interference fit with the support tube 311 , and the outer ring extension portion extends into the injection tube assembly 32 and has an interference fit with the injection tube assembly 32 .

[0074] It should be noted that in addition to the above structures, the first rotating part 312 and the second rotating part 313 can also be other structures, as long as it can ensure that the connecting pipe 22 and the support pipe 311 can rotate relative to each other and are sealed, and the support pipe 311 and the injection pipe group 32 can rotate relative to each other and are sealed.

[0075] Continue reading Figure 1 , and also see Figure 8 In some embodiments of the present invention, the injection pipe group 32 includes a nozzle 321 and an intermediate connecting pipe 322, the intermediate connecting pipe 322 is connected to the second rotating component 313, and the nozzle 321 is fixedly connected to the intermediate connecting pipe 322, that is, the nozzle 321 and the intermediate connecting pipe 322 can be fixedly connected by threads; the driving end of the pitch driving component 42 is connected to the nozzle 321 through a clamp 323.

[0076] Of course, the spray pipe group 32 can be set as an integrated structure, that is, the spray pipe 321 and the intermediate connecting pipe 322 can form an integrated structure, which is equivalent to the connection between the spray pipe group 32 and the second rotating component 313 being a bent pipe structure.

[0077] It should be noted that the yaw drive component 41 and the pitch drive component 42 can be structures such as electric push rods or electric cylinders. As long as the components can achieve linear drive, they can be used as the yaw drive component 41 and the pitch drive component 42 in theory. The specific selection can be determined according to the actual use. Among them, the angle adjustment of the injection tube group 32 in the horizontal direction depends on the extension and contraction amount of the yaw push rod, and the angle adjustment of the injection tube group 32 in the pitch direction depends on the extension and contraction amount of the pitch push rod.

[0078] The present invention also provides a drone, comprising a drone body and any one of the above-mentioned spray devices, wherein the spray device is mounted on the drone body.

[0079] Continue reading Figures 4 to 6 When the spray device provided by the embodiment of the present invention is applied to a drone, the specific movement process is as follows: When the UAV is started and powered on, the yaw drive component 41 (electric push rod) and the pitch drive component 42 (electric push rod) drive the azimuth conversion component 43 to automatically return to their original positions, and the bull's eye bearings are located in the middle of their respective tracks or slide grooves, so that the nozzle direction of the nozzle 321 points directly in front of the UAV.

[0080] When the driving rod of the yaw driving component 41 (electric push rod) is extended, the yaw driving component 41 drives the azimuth conversion component 43 to rotate clockwise, and the azimuth conversion component 43 drives the support pipe group 31 to rotate relative to the connecting pipe 22, and the pitch driving component 42 drives the injection pipe group 32 to rotate with the azimuth conversion component 43, so that the injection pipe group 32 is rotated. Figure 4 The position shown is Figure 3 Alternatively, when the driving rod of the yaw driving component 41 (electric push rod) retracts, the yaw driving component 41 drives the azimuth conversion component 43 to rotate counterclockwise, the azimuth conversion component 43 drives the support pipe group 31 to rotate relative to the connecting pipe 22, and the pitch driving component 42 drives the injection pipe group 32 to rotate with the azimuth conversion component 43, so that the injection pipe group 32 is Figure 3 The position shown is Figure 4 The position shown is deflected.

[0081] When the driving rod of the pitch driving component 42 (electric push rod) is extended, the pitch driving component 42 drives the nozzle 321 to rotate downward, so that the intermediate connecting pipe 322 follows the second rotating component 313 to rotate around the axis in the pitch direction, and the position of the azimuth conversion component 43 remains unchanged. Figure 5 The position shown is Figure 6 Alternatively, when the driving rod of the pitch driving component 42 (electric push rod) is retracted, the pitch driving component 42 drives the nozzle 321 to rotate upward, so that the injection pipe group 32 is Figure 6 The position shown is Figure 5 The pitch changes are made to the positions shown.

[0082] During the movement, the bull's eye bearings on the first connection part 433 and the second connection part 434 of the orientation conversion part 43 slide in their respective tracks or slide grooves, which can balance the forces at both ends of the orientation conversion part 43, reduce the bending moment of the orientation conversion part 43 and the support tube 311 connected to the orientation conversion part 43, and improve the operating stability.

[0083] When the firefighting operation is completed, the yaw drive component 41 (electric push rod) and the pitch drive component 42 (electric push rod) automatically return to the center position, so that the bull's eye bearing is located in the middle position of their respective tracks or slide grooves, and the nozzle direction of the nozzle 321 points to the front of the drone, preparing for the next loading.

[0084] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A spraying device, characterized in that: include: Firefighting connector, suitable for installation on drones; A fixing assembly, comprising a fixing component and a connecting pipe, wherein the fixing component is suitable for being mounted on the drone, the connecting pipe is mounted on the fixing component, and the connecting pipe is connected to the fire fighting joint through a connecting pipe; The injection assembly comprises a support tube group and an injection tube group, wherein the support tube group is connected to the connection tube and can rotate relative to the connection tube; the injection tube group is connected to the support tube group and can rotate relative to the support tube group; The driving assembly includes a yaw driving component, a pitch driving component and an azimuth conversion component. The azimuth conversion component is arranged on the supporting pipe group. The yaw driving component is suitable for being installed on the UAV and connected to the azimuth conversion component. The fixed end of the pitch driving component is connected to the azimuth conversion component, and the driving end of the pitch driving component is connected to the injection pipe group.

2. The spraying device according to claim 1, characterized in that The orientation conversion member comprises a conversion body, a support portion and a first connection portion; The conversion body is sleeved on the outside of the support tube group and fixedly connected to the support tube group. The support part is connected to the conversion body and is tilted relative to the conversion body. The first connection part is connected to an end of the support part facing away from the conversion body. The plane where the first connection part is located is parallel to the plane where the conversion body is located. The yaw driving component is connected to the conversion body, and the fixed end of the pitch driving component is connected to the first connecting portion.

3. The spraying device according to claim 2, characterized in that The fixing component includes a fixing piece and a supporting seat, wherein the fixing piece is suitable for being mounted on the drone, and the supporting seat is fixed to the fixing piece; A first limiting member is disposed on one of the first connecting portion and the supporting seat, and a first guiding member that cooperates with the first limiting member to limit a position is disposed on the other of the first connecting portion and the supporting seat.

4. The spraying device according to claim 2, characterized in that The conversion body is provided with a second connection portion, and the yaw driving component is connected to the second connection portion.

5. The spraying device according to claim 4, characterized in that On the same projection plane, a center line of the first connection portion coincides with a center line of the second connection portion.

6. The spraying device according to claim 4, characterized in that The connecting pipe is provided with a shaft shoulder, and a fixing seat is sleeved on the shaft shoulder; A second limiting member is disposed on one of the second connecting portion and the fixing seat, and a second guiding member that cooperates with the second limiting member to limit the position is disposed on the other of the second connecting portion and the fixing seat.

7. The spraying device according to any one of claims 1 to 6, characterized in that: The support tube assembly comprises a support tube, a first rotating component and a second rotating component; The support tube comprises a first tube body and a second tube body connected to each other, the first tube body and the second tube body are vertically arranged, and the first tube body is connected to the connecting tube through the first rotating component; The second tube body is connected to the injection tube group through the second rotating component.

8. The spraying device according to claim 7, characterized in that The first rotating component and the second rotating component each include an inner ring, an outer ring, a rolling element and a retaining frame, wherein the rolling element is arranged on the retaining frame, and the retaining frame is arranged between the inner ring and the outer ring, and the inner ring and the outer ring can rotate relatively; The inner ring is provided with an inner ring extension portion, the inner ring extension portion extends into the connecting tube or the supporting tube, and is respectively interference-fitted with the connecting tube or the supporting tube; The outer ring is provided with an outer ring extension portion, and the outer ring extension portion extends into the support tube or the injection tube group and is respectively interference-fitted with the support tube or the injection tube group.

9. The spraying device according to claim 7, characterized in that The spray pipe group includes a spray pipe and an intermediate connecting pipe, the intermediate connecting pipe is connected to the second rotating component, and the spray pipe is fixedly connected to the intermediate connecting pipe; The driving end of the pitch driving component is connected to the nozzle through a clamp.

10. A drone, characterized in that: It comprises an unmanned aerial vehicle body and the spray device according to any one of claims 1 to 9, wherein the spray device is mounted on the unmanned aerial vehicle body.

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