DEVICE COMPRISING A LANCE SUITABLE FOR ATTACHMENT TO A DRONE, THE DEVICE BEING SPECIFICALLY CONFIGURED TO MINIMIZE OSCILLATIONS OF THE LANCE

Description

DEVICE COMPRISING A LANCE SUITABLE FOR BEING ATTACHED TO A DRONE Field of invention This invention relates to the drone sector. In particular, the invention relates to a device comprising a lance through which a fluid, such as a washing liquid, can pass. The invention also relates to a drone equipped with said device. State of the art Drones are increasingly used for many purposes. A possible use of drones concerns the washing sector, for example for washing external surfaces of buildings. A drone for washing external surfaces of buildings can be equipped with a spear. The Applicant found that equipping a drone with a spear incurs in technical issues. In particular, the terminal part of the lance (equipped with a nozzle from which (liquid leaks out) can oscillate undesirably. In particular, the terminal part of the spear can swing freely without the possibility of dampening this swing unwanted. Therefore, the drone in flight may be subjected to unwanted forces which, in particular, they negatively affect the maneuverability of the drone. Furthermore, the oscillations do not allow for optimal washing. Problems associated with the expulsion of the liquid have also been found from the spear and associated with the possible occurrence of water hammer. These problems can negatively affect the drone's maneuverability. In particular, forces can be generated that are parallel and in opposite directions to the thrust with which the pressurized liquid is directed outwards through the nozzle and / or a water hammer may occur when the hydraulic circuit of which the lance is is part is closed or opened suddenly. Such unwanted forces are discharged onto the center of mass of the drone, so that the drone in such circumstances can lose the flight trim, that is, flight instabilities may be generated drone that becomes difficult to control. This complex of unwanted forces may negatively affect the drone's maneuverability. There is therefore a need to resolve at least one of the aforementioned problems. Summary of the invention An object of the present invention is to provide a device provided with a spear suitable for attachment to a drone, the device being configured in so as to minimize unwanted stresses on the drone, called stresses unwanted being generated in particular by the mass of the spear. A particular object of the invention is to minimize possible oscillations of the terminal part of the lance equipped with nozzle. Another particular object of the invention is to minimize possible stresses on the drone caused by water hammer and / or by the pressurized fluid passing through the launch, in particular from the counterthrust generated as a reaction to the jet of fluid (in particular liquid) at high pressure which is forced into the lance. The present invention achieves at least one of these objects, and other objects that will be evident in the light of this description, by means of a device, according to claim 1, suitable for being fixed to a drone, in particular to at least two legs of a drone, the device comprising - a lance equipped with a nozzle through which a fluid can pass, in particular a liquid; - a first component, fixed to the lance in a distal position from the nozzle; - a second component, fixed to the lance in a proximal position with respect to to the nozzle, in particular where the first component and the second component are distinct from each other; - a cable connected to said first component and to said second component, in particular in order to reduce possible oscillations of the terminal part (29) of the lance equipped with nozzle. The invention also relates to a drone according to claim 10. Advantageously, the device allows you to attach a spear to a drone minimizing the possible free oscillations of the terminal part of the spear and relative moments generated on the drone's body. Advantageously, a device according to the invention allows to fix in particularly safe way to throw it at the drone. It is particularly preferable that the first component is configured to be fixed to the body of the drone from which the drone's legs extend; and is It is particularly preferable that the first component includes elastic means capable of dampen any stress, in particular a water hammer and / or a stress generated by the fluid passing through the lance, which can be transmitted from the spear to the drone when the device is attached to the drone. Further features and advantages of the invention will become more apparent. evident in light of the detailed description of embodiments exemplary, but not exclusive. The dependent claims describe particular embodiments. of the invention. Brief description of the figures In the description of the invention, reference is made to the attached drawing tables, which are provided by way of example and not limitation, where: Fig. 1 shows a perspective view, particularly from above, of a drone equipped with of a device according to the invention; Fig. 2 illustrates another perspective view, particularly from below, of the drone in Fig. 1; Fig. 3 shows a side view of the drone in Fig. 1; Fig. 4 illustrates a detail of Fig. 3; Fig. 5 illustrates a perspective view, particularly from above, of a device according to the invention; Fig. 6 illustrates a perspective view of a component of a device according to the invention; Fig. 7 shows a perspective view, with exploded parts, of the component in Fig. 6; Fig. 8 shows a front view of the device of Fig. 5; Fig. 9 shows a perspective view, with exploded parts, of some parts of the device of Fig. 5; Fig. 10 illustrates a perspective view, particularly from below, of an example not limitation of a drone according to the invention. The same elements or components have the same reference number. Description of exemplary embodiments of the invention With reference to the Figures, embodiments are described exemplifying a device 1 suitable for being fixed to a drone 100, in particular to at least two legs 102a, 102b of a drone 100, and of a drone 100 equipped with such a device 1. In all embodiments, device 1 comprises - a lance 2 equipped with a nozzle 21 through which a fluid can pass, in particular a liquid; in particular where the nozzle 21 serves for the release of liquid from spear 2; - a first component 11, fixed to the lance 2 in a distal position from the nozzle 21; - a second component 12, fixed to the lance 2 in a proximal position with respect to to the nozzle 21, in particular where the first component 11 and the second component 12 are distinct from each other; - a cable 3 connected to said first component 11 and to said second component 12, in particular in order to reduce possible oscillations of the terminal part 29 of the lance 2 equipped with the nozzle 21. In other words, the distance between the first component 11 and the nozzle 21 is greater of the distance between the second component 12 and the nozzle 21. Cable 3 is preferably arranged above lance 2. Cable 3 is preferably a steel cable. Preferably, cable 3 is taut (i.e. is under tension) when device 1 is placed on a support surface. The first component 11 is provided with at least one first hole 110a, 110b crossed by cable 3 and the second component 12 is provided with a second hole 120 crossed by cable 3. Preferably, the first component 11 is provided with two first holes 110a, 110b crossed by cable 3. For example, each of the two ends of cable 3 is in proximity to a respective first hole 110a, 110b. Preferably, each end of the cable 3 is provided with a body 31 in contact or capable of coming into contact with the body 113 of the first component 11 where said at least one first hole 110a, 110b is present, example where the first two holes 110a, 110b are present. Preferably, the second hole 120 is at a shorter distance from the axis longitudinal X of the spear 2 with respect to the distance between said at least one first hole 110a, 110b and the longitudinal axis X of the spear 2. Advantageously, this way you have a better fixing of the lance 2. It is particularly preferable that the first two holes 110a, 110b and the second hole 120 are essentially arranged at the vertices of a triangle, in particular at the vertices of a isosceles triangle. It is particularly preferable that the second hole 120 is above and in correspondence of the spear 2, and that in the case in which two first holes 110a are foreseen, 110b they are arranged laterally (in particular corresponding to a respective side) with respect to the spear 2. Preferably, the second hole 120 is delimited by a surface (e.g. cylindrical) that extends around an axis orthogonal to the longitudinal axis X. Preferably, said at least one first hole 110a, 110b is delimited by a surface (e.g. cylindrical) that extends around a transverse axis with respect to the longitudinal axis X. The device 1 comprises a third component 13, which is configured to be fixed to the legs 102a, 102b of the drone 100, in particular to two legs 102a, 102b of drone 100. In particular, the third component 13 is distinct from the first component 11 and from the second component 12. In particular, the first component 11 is arranged between the second component 12 and said third component 13, in particular along the longitudinal axis X of the lance 2. The third component 13 serves in particular to attach the lance 2 to the drone 100. In particular, a longitudinal portion of the lance 2 is arranged inside said third component 13 and / or a longitudinal portion of a tube 4 connected to the spear 2 is arranged inside said third component 13. The tube 4, which in particular is a flexible tube, used to introduce the fluid into the lance 2. Preferably, the third component 13 comprises two parts 138, 139 (Fig. 5), each of which is suitable to be fixed to a respective leg 102a, 102b of the drone 1 by means of fixing means. Said fixing means preferably include at least one screw (preferably Allen) and preferably at least a threaded insert (preferably blind). Preferably, each part 138, 139 comprises a respective front body 138a, 139a and a respective rear body 138b, 139b, fixed together. The body front 138a, 139a and rear body 138b, 139b define a seat 1380, 1390 (Fig. 9) for a respective leg 102a, 102b of the drone 100. Advantageously, the third component 13 can be fixed substantially to any drone with legs, as the third component 13 can be adapted to the legs of any type of drone. Preferably, the third component 13 comprises a tubular body 131 fixed to the two parts 138, 139, In ​​particular, the tubular body 131 extends between the two parts 138, 139. Preferably, the tubular body 131 is provided with a seat 1310 where the a longitudinal portion of the lance 2 or a longitudinal portion of the tube 4 (as illustrated in the exploded view in Fig. 9). Said seat 1310 is for example a notch of the tubular body 131. Preferably, the tubular body 131 extends orthogonally to the axis longitudinal X of the spear 2. Advantageously, the two parts 138, 139 can essentially act as a template for the positioning of the tubular body 131, which can thus be positioned at a predetermined and repeatable height. Preferably, the third component 13 comprises a part 137 in which is arranged a longitudinal portion of the lance 2 and / or a longitudinal portion of the tube 4. In particular, said part 137 is provided with at least one seat 1374 for the launch 2 and / or for tube 4. Preferably, the tubular body 131 is arranged in a seat 1371 of said part 137. Preferably, the tube 4 and the lance 2 are connected to each other by means of connection which includes at least one portion with a polygonal section 5, preferably hexagonal; and the third component 13 (in particular part 137) comprises a seat 1375 having the same shape as said section portion polygonal 5, in which said polygonal section portion 5 is arranged, in particular so as to avoid rotations of the lance 2 around its axis longitudinal X. It is particularly preferable that the first component 11 is configured for be attached to the body 101 of the drone 100 from which the legs 102a, 120b extend of the drone 100. Therefore, in particular, the first component 11 and the second component 12 is used to attach lance 2 to drone 100. The first component 11 can be fixed to the drone 100 for example by means of screws. It is also particularly preferable that the first component 11 includes means elastic bands 119a, 119b, 119c, 119d designed to dampen any stress, in in particular a water hammer and / or a stress generated by the fluid under pressure which passes through the launch 2, which can be transmitted from the launch 2 to the drone 100 when the device 1 is attached to the drone 100, in particular when the first component 11 is attached to drone 100. In particular, the first component 11 comprises a first part 111 configured to be fixed (in particular integrally) to the body 101 of the drone 100, and a second part 112 fixed to the lance 2, in particular fixed integrally to the lance 2; and said elastic means 119a, 119b, 119c, 119d are arranged between said first part 111 and said second part 112. When the first part 111 is attached to the drone body 101, the first part 111 and the body 101 of drone 100 are integral with each other. The elastic means 119a, 119b, 119c, 119d are suitable to be compressed between the first part 111 and the second part 112. In particular, cable 3 is connected to an area of ​​the first component 11 which is in solidarity with the said first part 111. In particular, the cable 3 is connected to the body 113 of the first component 11 which is in solidarity with the said first part 111. Preferably, said elastic means 119a, 119b, 119c, 119d are arranged at the vertices of a quadrilateral. Preferably, said elastic means 119a, 119b, 119c, 119d comprise springs or rubbers. For example, four springs or four bodies of eraser. By way of example only, Part 111 and Part 112 may be set between them by means of fastening means which comprise pins 118a, 118b, 118c, 118d, and around each pin 118a, 118b, 118c, 118d a respective spring 119a, 119b, 119c, 119d. Preferably, the first component 11 comprises an upper part 114a and a lower part 114b fixed together, between which the lance 2 is arranged, in particular between which the lance 2 is clamped. In particular, the upper part 114a comprises said parts 111 and 112 of the first component 11. By way of example only and not as a limitation, the body 101 of the drone 100 may be provided with threaded holes, for example four threaded holes 101a, 101b, 101c, 101d (Fig. 10) where screws can be screwed in to fix the first component 11 (in particular said first part 111) to the body 101. Preferably, the body 101 of the drone 100 may be provided with a seat 101e for said first part 11 of the first component 11. Preferably, the second component 12 comprises an upper part 124a and a lower part 124b (Fig. 5) fixed together, between which the lance 2 is placed, in particular between which the lance 2 is clamped. In particular, the aforementioned second hole 120 is obtained in the upper part 124a, for example in a fin of the upper part 124a. The second component 12, in particular, is solidly fixed to the lance 2. Preferably, the third component 13 comprises an upper part 137a and a lower part 137b fixed together, between which the lance 2 and / or said tube is arranged 4, in particular between which the lance 2 and / or said tube 4 is clamped. In particular, the said part 137 comprises or is formed by said upper part 137a and said lower part 137b. Preferably, the terminal part 29 of the lance 2 is provided with a body tubular 28, for example in the shape of a trumpet. The tubular body 28 is in particular designed to direct, and preferably collect, the outgoing flow of liquid from the nozzle 21. The tubular body 28, in particular, extends beyond the lance 2. The invention also concerns a drone 100, in particular for washing external surfaces of buildings (e.g. windows or glass), including a device 1. In particular, device 1 is attached to the drone 100, preferably by means of said third component 13 and preferably by means of said first component 11.

Claims

1. Device (1) suitable for being fixed to a drone (100), in particular to at least two legs (102a, 102b) of a drone (100), the device (100) comprising - a lance (2) equipped with a nozzle (21) through which a fluid can pass, in a particular liquid; - a first component (11), fixed to the lance (2) in a distal position from the nozzle (21); - a second component (12), fixed to the lance (2) in a proximal position with respect to the nozzle (21), in particular where the first component (11) and the second component (12) are distinct from each other; - a cable (3) connected to said first component (11) and to said second component (12), in particular so as to reduce possible oscillations of the part terminal (29) of the lance (2) equipped with the nozzle (21).

2. Device (1) according to claim 1, wherein said first component (11) is provided with at least one first hole (110a, 110b) crossed by the cable (3) and said second component (12) is provided with a second hole (120) crossed by the cable (3); preferably wherein said first component (11) is provided with two first holes (110a, 110b) crossed by the cable (3).

3. Device (1) according to claim 2, wherein the second hole (120) is at a smaller distance from the longitudinal axis (X) of the spear (2) than the distance between said at least a first hole (110a, 110b) and the longitudinal axis (X) of the spear (2).

4. Device (1) according to any of the preceding claims, comprising a third component (13), said third component (13) being configured to be attached to the legs (102a, 102b) of the drone (100); wherein a longitudinal portion of the lance (2) is arranged inside said third component (13) and / or in which a longitudinal portion of a tube (4) connected to the spear (2) is arranged inside said third component (13); in particular where said third component (13) is distinct from the first component (11) and the second component (12); in particular wherein said first component (11) is arranged between said second component (12) and said third component (13).

5. Device (1) according to any of the preceding claims, wherein the first component (11) is configured to be fixed to the body (101) of the drone (100) from which the legs (102a, 120b) of the drone (100) extend; and wherein the first component (11) comprises elastic means (119a, 119b, 119c, 119d) designed to dampen any stress, in particular a water hammer and / or a stress generated by the fluid passing through the lance (2), which can be transmitted from the lance (2) to the drone (100) when the device (1) is fixed to the drone (100).

6. Device (1) according to claim 5, wherein said first component (11) comprises a first part (111) configured to be fixed to the body (101) of the drone (100) and a second part (112) fixed to the lance (2); and wherein said means elastic bands (119a, 119b, 119c, 119d) are arranged between said first part (111) and said second part (112).

7. Device (1) according to claim 6, wherein the cable (3) is connected to a area of ​​the first component (11) which is integral with said first part (111), in particular where the cable (3) is connected to a body (113) of the first component (11) which is in solidarity with the said first part (111).

8. Device (1) according to claim 5 or 6 or 7, wherein said elastic means (119a, 119b, 119c, 119d) are arranged at the vertices of a quadrilateral, in particular in where said elastic means (119a, 119b, 119c, 119d) include springs or rubbers.

9. Device (1) according to any of the preceding claims, wherein said cable (3) is taut when the device (1) is placed on a support surface.

10. Drone (100), in particular for washing external surfaces of buildings, comprising a device (1) according to any of the claims previous ones.