Drone water sampler

Abstract

According to one aspect of the present invention, a drone water sampler is provided, the sampler comprising: a stepping motor formed as a motor for generating power; a spring coupling coupled to a driving shaft of the stepping motor; a TM screw coupled to the spring coupling so as to be linked to the rotation of the driving shaft; a mechanical seal coupled to the TM screw so that the stepping motor is waterproof; a TM nut forming a lifting operation by means of the rotation of the TM screw; an opening / closing part coupled to the TM nut so as to be lifted / lowered by means of the TM screw; a shaft for guiding an operation path of the opening / closing part; and a water-sampling drum formed as a cylindrical drum in which sampled water is stored.

Description

Water sampler for drones

[0001] The present invention relates to a water sampler for drones.

[0002]

[0003] A water sampling device is a device used to collect water for the investigation of its physical and chemical properties, and it is used for various purposes, such as measuring the pollution level of sewage sources, inspecting whether tap water meets water quality standards, and measuring environmental pollution levels in rivers, lakes, and seas.

[0004] Conventionally, in order to collect water samples necessary for water quality measurement, most samplers used boats to collect water samples from specific areas. However, particularly when sampling was carried out using boats, the surrounding water quality could be contaminated by the influence of engine cooling water or exhaust gases leaking from the vessel, making it impossible to accurately measure the water quality using the collected samples. Furthermore, workers had to manually collect samples to gather water, and there was a possibility that the collected samples could be contaminated or deteriorated due to errors made by the workers during this process. Recently, there has been a trend of utilizing drones, which are unmanned aerial vehicles, in fields where direct human access is difficult. Due to advantages such as convenience of transport and storage and ease of operation, extensive research is being conducted to use them in various fields, including aerial photography, disaster monitoring, and logistics transport, in addition to weather observation and water quality management. (Registered Patent No. 10-2582385) Currently, there is an increasing number of research cases in the fields of water resource management, river management, and surveying that utilize drones for water resource flow, water quality observation, flow rate surveys, or disaster management. Furthermore, as a drone-based water resource and river management tool, it is being utilized in various fields, including continuous monitoring of multi-purpose dams and weirs, including risk detection and automatic dissemination; continuous monitoring and identification of precursors, including detection and prediction of the spread of pollution caused by algal blooms; river topography monitoring and map generation, including river surveillance and automatic map generation; continuous monitoring of river risk and prohibited areas, including waste, inland fisheries, and fishing; monitoring of riverside development sites, including illegal construction; and drought and flood monitoring and damage prediction, including flood damage or drought conditions.

[0005] Meanwhile, due to the characteristics of the water sampling equipment mounted on the drone, weight reduction must be achieved to minimize the drone's flight time, and since the equipment is used in an underwater environment, a waterproof design must be incorporated for the operation of the drive system.

[0006]

[0007] Embodiments of the present invention relate to water sampling equipment mounted on a drone and aim to provide a drone water sampler capable of accurately sampling water at a target depth.

[0008] However, the technical problems that the embodiments of the present invention aim to solve are not necessarily limited to the technical problems mentioned above. Other technical problems not mentioned will be clearly understood by those skilled in the art to which the embodiments of the present invention belong from other descriptions in the specification, such as the detailed description.

[0009]

[0010] According to one aspect of the present invention, a drone water collector may be provided comprising: a stepping motor formed as a motor that generates power; a spring coupling coupled to the drive shaft of the stepping motor; a TM screw coupled to the spring coupling and linked to the rotation of the drive shaft; a mechanical seal coupled to the TM screw to waterproof the stepping motor; a TM nut that forms an upward movement in the rotation of the TM screw; an opening / closing part coupled to the TM nut and moved up and down by the TM screw; an axis shaft that guides the operation path of the opening / closing part; and a water collection drum formed as a cylindrical drum in which collected water is stored.

[0011]

[0012] The present invention achieves weight reduction by using a stepping motor, and in particular, can be designed to enable up-and-down driving in situations subjected to hydraulic pressure by applying a shaft coupling in the form of a spring coupling, mechanical seal, TM screw, TM nut, shaft, and ball bearing.

[0013] However, the technical effects obtainable through the embodiments of the present invention are not necessarily limited to the effects mentioned above. Other technical effects not mentioned will be clearly understood by those skilled in the art from other descriptions in the specification, such as the detailed description.

[0014]

[0015] FIG. 1 is a schematic diagram showing a drone water collector according to one embodiment of the present invention.

[0016] Figure 2 is a schematic diagram showing the lower part of the drone water sampler illustrated in Figure 1.

[0017] Figure 3 is a schematic diagram showing the interior of the drone water sampler illustrated in Figure 2.

[0018] FIG. 4 is a schematic diagram showing an opening and closing part according to one embodiment of the present invention.

[0019] FIG. 5 is a drawing showing a spring coupling according to one embodiment of the present invention.

[0020] Figure 6 is a cross-sectional view of a mechanical seal.

[0021] Figure 7 is a diagram showing an exploded view of the mechanical seal illustrated in Figure 6.

[0022] FIG. 8 is an exploded perspective view showing the mechanical seal illustrated in FIG. 7 from a different angle.

[0023] FIG. 9 is a schematic diagram showing a water collection drum of a drone water collector according to one embodiment of the present invention.

[0024] FIG. 10 is a diagram showing the operation of a drone water collector according to one embodiment of the present invention.

[0025] FIG. 11 is a perspective view showing an open water collection drum according to one embodiment of the present invention.

[0026]

[0027] Embodiments of the present invention will be described below with reference to the accompanying drawings. The following embodiments may be provided to more completely explain the present invention to those skilled in the art. However, the following embodiments are provided to aid in understanding the present invention, and the technical concept of the present invention is not necessarily limited to the following embodiments. Furthermore, detailed descriptions of known configurations or those that obscure the technical essence of the present invention will be omitted.

[0028] FIG. 1 is a schematic diagram showing a drone water collector according to one embodiment of the present invention.

[0029] Figure 2 is a schematic diagram showing the lower part of the drone water sampler illustrated in Figure 1.

[0030] Figure 3 is a schematic diagram showing the interior of the drone water sampler illustrated in Figure 2.

[0031] Referring to FIGS. 1 to 3, a drone water collector according to one embodiment of the present invention may include a stepping motor (100) formed as a motor that generates power, a spring coupling (200) coupled to a drive shaft (102) of the stepping motor (100), a TM screw (300) coupled to the spring coupling (200) and linked to the rotation of the drive shaft (102), a mechanical seal part (400) coupled to the TM screw (300) to waterproof the stepping motor (100), a TM nut (500) that forms an upward movement in the rotation of the TM screw (300), an opening / closing part (600) coupled to the TM nut (500) and moved up and down by the TM screw (300), and an axis shaft (700) that guides the operation path of the opening / closing part (600).

[0032] Each configuration will be explained in detail below with reference to the drawings.

[0033] A drone water collector according to one embodiment of the present invention may include a drone (D). The drone (D) may be a means of transportation capable of flying to a place where water is collected, such as a river, lake, or sea. Although the drone (D) of the present invention is illustrated in FIG. 1 in the form of a general drone, it is not limited thereto, and any flying vehicle or water transport means capable of implementing the embodiment of the present invention may be used. Such a drone (D) may be loaded with components that operate for water collection on its lower surface.

[0034] Additionally, a winch (W) may be positioned at the bottom of the drone (D). The winch (W) may be a component positioned to allow components connected by a wire to be lowered into the water for water collection. The winch (W) may be a general type of winch device that forms the lowering motion of the drone water collector of the present invention through the unwinding motion of the wire and the rising motion through the winding motion.

[0035] The upper part of a drone water collector according to one embodiment of the present invention may be formed in a shape in which two rectangular spaces are connected. To explain the placement of each component of such a drone water collector, the two spaces are described as a first space (1000) and a second space (2000) starting from the top.

[0036] A drone water collector according to one embodiment of the present invention may include a first space (1000). The first space (1000) may be in the form of a rectangular space. On the side of the first space (1000), a column-shaped frame may be placed at each of the four corners. Additionally, the upper surface of the first space (1000) may be in the form of a square plate. Additionally, a winch bracket (900) may be placed on the upper part of the first space (1000).

[0037] A drone water collector according to one embodiment of the present invention may include a winch bracket (900). The winch bracket (900) may be a part that is coupled to a wire unwound from a winch (W) positioned on a drone (D). The winch bracket (900) may be in the form of a square plate with a coupling part (910) formed at the center that is coupled to the wire.

[0038] The connecting part (910) is formed in a circular ring shape and can be a part that connects to a carabiner (W1) connected to the wire end of the winch (W). Here, the carabiner (W1) can be a general ring-shaped carabiner (W1) and can be varied into any shape that can be connected to the connecting part (910) formed in a circular ring shape.

[0039] Additionally, a water collection controller (C) may be placed inside the first space (1000). The water collection controller (C) may be a component that controls the opening and closing operation of the water collection drum (800). More specifically, the water collection controller (C) may be a device that controls the stepping motor (100) that generates the power required for the operation of the drone water collector. The water collection controller (C) may be placed on a rectangular plate forming the lower side of the first space (1000).

[0040] A drone water collector according to one embodiment of the present invention may include a second space (2000).

[0041] The second space (2000) may be positioned below the first space (1000). The second space (2000) may be formed by connecting it to the lower side of the first space (1000). The upper side of the second space (2000) may be shared with the lower side of the first space (1000). A stepping motor (100) may be positioned inside the second space (2000). However, the position of the stepping motor (100) is not limited to the second space (2000) and may be positioned in a part that can be placed below the water collection controller (C) as shown in FIG. 3. Additionally, an opening / closing part (600) may be positioned at the bottom of the second space (2000). Additionally, an axle shaft (700) may be positioned on the left and right sides of the second space (2000).

[0042] A drone water collector according to one embodiment of the present invention may include a stepping motor (100). The stepping motor (100) may be a motor that generates power necessary for the opening and closing operation of an opening / closing part (600) formed by a stopper of a water collection drum (800). The stepping motor (100) may be placed inside a motor case (101). Here, the motor case (101) may be formed as a sealed structure except for the part where the drive shaft (102) extending from the stepping motor (100) is placed. The stepping motor (100) may be placed so that the drive shaft (102) faces downward. The stepping motor (100) may have the drive shaft (102) coupled to a spring coupling (200). Additionally, the stepping motor (100) may be placed inside the motor case (101) together with the spring coupling (200).

[0043] FIG. 5 is a drawing showing a spring coupling according to one embodiment of the present invention.

[0044] Referring to FIGS. 1 to 5, a drone water collector according to one embodiment of the present invention may include a spring coupling (200). The spring coupling (200) is a flexible coupling and may serve as a device to isolate vibrations between two connected rotating shafts, with a central portion (201) having a groove formed in the shape of a spring. Such a spring coupling (200) can reduce assembly adjustment loads by absorbing eccentricity, angular misalignment, and end play through fluid movement when an unexpected overload occurs in an underwater environment. Additionally, the spring coupling (200) may be more prone to breaking than a general coupling component. Accordingly, the spring coupling (200) may break upon overload, thereby releasing the connection between the rotating bodies and protecting the stepping motor (100), which is an expensive power unit.

[0045] A drone water collector according to one embodiment of the present invention may include an axle shaft (700).

[0046] The shaft (700) is a component that prevents the problem of misalignment, which is a phenomenon where the connection of the TM screw (300) is twisted by water pressure when the opening / closing part (600) is driven up and down. The shaft (700) can be formed in a cylindrical shape placed on the left and right sides of the second space (2000). Two or more shafts (700) may be provided. Here, the opening / closing part (600) coupled to the shaft (700) may be a shaft coupling part (620) in the form of a ball bearing. The shaft (700) can be coupled to the inner diameter portion of the shaft coupling part (620) formed in the form of a ball bearing in the opening / closing part (600). Accordingly, the shaft (700) can be moved by contacting and rolling with the shaft coupling part (620).

[0047] FIG. 4 is a schematic diagram showing an opening and closing part according to one embodiment of the present invention.

[0048] Referring to FIGS. 1 to 4, a drone water collector according to one embodiment of the present invention may include an opening / closing part (600). The opening / closing part (600) may be a component that functions as a stopper for a water collection drum (800). An O-ring (O) may be disposed in the part of the opening / closing part (600) that is coupled to the water collection drum (800), so that when the opening / closing part (600) and the water collection drum (800) are coupled, a sealed state of the water collection drum (800) may be formed.

[0049] Such an opening / closing part (600) may include a water collection drum coupling part (610), an shaft coupling part (620), and a shaft fixing plate (630).

[0050] An opening / closing part (600) according to one embodiment of the present invention may include a water collection drum coupling part (610). The water collection drum coupling part (610) may be a part that is coupled to the water collection drum (800) to form a seal of the water collection drum (800). The water collection drum coupling part (610) may be formed in a shape that complements the inlet portion of the water collection drum (800) by being positioned at the center of the opening / closing part (600). At this time, a sealing member such as an O-ring may be placed at the part where the water collection drum coupling part (610) and the inlet portion of the water collection drum (800) are coupled. Accordingly, when the opening / closing part (600) and the water collection drum (800) are coupled, a sealed state of the water collection drum (800) may be formed. In addition, a TM nut (500) may be coupled inside the water collection drum coupling part (610). In this way, the water collection drum coupling part (610) may have an extra space (601) formed so that the TM screw (300) can proceed a predetermined distance after passing through the TM nut (500). Accordingly, the TM screw (300) rotates and passes through the TM nut (500) and enters the extra space (601), and the opening / closing part (600) can be raised.

[0051] An opening / closing part (600) according to one embodiment of the present invention may include an axle shaft coupling part (620). The axle shaft coupling part (620) may be a part that is placed at the left and right ends of the opening / closing part (600) respectively and coupled with the axle shaft (700). The axle shaft coupling part (620) may be formed in the shape of a ball bearing and may move by rolling in contact with the outer surface of the axle shaft (700). The axle shaft coupling part (620) may be formed in a cylindrical shape. In addition, the axle shaft coupling part (620) may be connected to a water collection drum coupling part (610) placed at the center of the opening / closing part (600) via a horizontal end (602). Here, the horizontal end (602) may be in the shape of a rectangular plate extended in the longitudinal direction. Additionally, the horizontal end (602) may be in a form where reinforcing plates (603) are stacked and bolted to reinforce strength.

[0052] A drone water collector according to one embodiment of the present invention may include a TM nut (500). The TM nut (500) is a component having a screw thread formed in its center so that it is positioned above the water collection drum coupling part (610) of the opening / closing part (600) and allows the opening / closing part (600) to be raised or lowered by the rotational movement of the TM screw (300). Such a TM nut (500) may be formed in a flange shape and may have holes (501) formed on both sides to be coupled with the water collection drum coupling part (610). Additionally, the TM nut (500) may have a hole (502) formed in its center to be coupled with the TM screw (300).

[0053] The opening / closing part (600) formed in this way moves upward when the TM screw (300) is rotated, and the shaft coupling part (620) can move by contacting the outer surface of the shaft (700).

[0054] An opening / closing part (600) according to one embodiment of the present invention may include an axle shaft fixing plate (630).

[0055] The shaft fixing plate (630) can be a plate that supports the lower side of the shaft (700). Additionally, the shaft fixing plate (630) can be placed on the lower side of the second space (2000). The shaft fixing plate (630) can be combined in a manner that overlaps with the horizontal end (602) connecting the water collection drum coupling part (610) and the shaft coupling part (620). Such a shaft fixing plate (630) can be connected to the shaft (700) on the upper side and connected to the support bracket (810) formed on the water collection drum (800) on the lower side to be supported. Such a shaft fixing plate (630) can be a plate in the shape of a '+' when viewed from above. Additionally, the shaft fixing plate (630) can be formed in the shape of a thin plate and connected to the shaft (700) by bolting. Furthermore, the two ends of the shaft fixing plate (630) that are positioned vertically to the part connected to the shaft (700) can be connected to the support bracket (810). At this time, the connection between the shaft fixing plate (630) and the support bracket (810) can be formed by connecting cylindrical columns. Additionally, a hole (H1) can be formed in the shaft fixing plate (630) at a position corresponding to the bolting part of the opening / closing part (600). Accordingly, the bolt head of the opening / closing part (600) can be inserted into the shaft fixing plate (630).

[0056] Figure 6 is a cross-sectional view of a mechanical seal.

[0057] Figure 7 is a diagram showing an exploded view of the mechanical seal illustrated in Figure 6.

[0058] FIG. 8 is an exploded perspective view showing the mechanical seal illustrated in FIG. 7 at a different angle.

[0059] Referring to FIGS. 6 to 8, a drone water sampler according to one embodiment of the present invention may include a mechanical seal.

[0060] The mechanical seal (400) can be a part formed to enable waterproofing of the part where the rotating TM screw (300) is placed.

[0061] Such a mechanical seal (400) may include an outer case (410), a first waterproof ring (420), a first coupling ring (430), a second coupling ring (440), a third coupling ring (450), and a second waterproof ring (460).

[0062] A mechanical seal according to one embodiment of the present invention may include an outer case (410).

[0063] The outer case (410) forms the exterior of the mechanical seal (400) and can be a part that is coupled to and supported by the motor case (101). The outer case (410) can be coupled to the motor case (101) to form a mechanical seal placement space (A1) in which a first waterproof ring (420), a first coupling ring (430), a second coupling ring (440), a third coupling ring (450), a second waterproof ring (460), and a TM screw (300) can be placed inside. The mechanical seal placement space (A1) can be a cylindrical space formed to be larger than the size occupied by the first waterproof ring (420), the first coupling ring (430), the second coupling ring (440), the third coupling ring (450), the second waterproof ring (460), and the TM screw (300). Additionally, the outer case (410) can be combined in a manner that forms the lower part of the motor case (101). The outer case (410) may have an upper shape that is combined with the motor case (101) and may have a multi-stage step. Additionally, the outer case (410) may have a hole formed in the center and a cylindrical exterior. Correspondingly, the connecting part of the motor case (101) that is combined with the outer case (410) may be formed in a shape that complements the outer case (410). Such an outer case (410) may be combined with the motor case (101) to form a cylindrical shape. Such an outer case (410) may be bolted to the motor case (101). Here, the bolting part between the outer case (410) and the motor case (101) may be combined with an O-ring member to form a waterproof structure.

[0064] The mechanical seal (400) of the present invention may include a first waterproof ring (420). The first waterproof ring (420) is a component positioned to seal the contact portion between the outer case (410) and the motor case (101) in the mechanical seal placement space (A1). The first waterproof ring (420) may be a ring-shaped member formed with an 'L' cross-section. The first waterproof ring (420) may be positioned in contact with the lower side (A11) and the left and right sides (A12) of the mechanical seal placement space (A1). Here, a joint, which is the joining portion between the motor case (101) and the outer case (410), may be located in the portion where the first waterproof ring (420) is in contact with the left and right sides (A12) of the mechanical seal placement space (A1). The first waterproof ring (420) can be formed in such a way that the first coupling ring (430) is coupled to the inside. The first waterproof ring (420) can be formed from an elastic material used for waterproofing, such as silicone or rubber.

[0065] The mechanical seal (400) of the present invention may include a first coupling ring (430). The first coupling ring (430) is a component that contacts the TM screw (300) and functions as a bushing bearing. Additionally, the first coupling ring (430) may be attached to the inner side of the first waterproof ring (420) and formed as a single component. The first coupling ring (430) may be in the form of a ring with a hollow formed with a diameter corresponding to the diameter of the TM screw (300). The first coupling ring (430) may be formed in the shape of a '□' cross section. Additionally, the first coupling ring (430) may be arranged to be fitted into the inner side of the first waterproof ring (420), which is formed in an 'L' shape. Such a first coupling ring (430) may be formed of a ceramic material.

[0066] The mechanical seal (400) of the present invention may include a second coupling ring (440). The second coupling ring (440) may be a portion arranged in a stacked form on the upper side of the first coupling ring (430). The second coupling ring (440) may be formed from a carbon material. The second coupling ring (440) may be a portion that contacts the first coupling ring (430) and is subjected to direct force. Accordingly, the second coupling ring (440), formed from a carbon material, may be formed with a lightweight and high strength material suitable for the operation of pressing the first coupling ring (430). The second coupling ring (440) may be a ring-shaped member formed with a square cross-section. The second coupling ring (440) may be formed with a cross-section smaller than that of the first coupling ring (430).

[0067] The mechanical seal (400) of the present invention may include a third coupling ring (450). The third coupling ring (450) may be stacked and disposed on top of the second coupling ring (440). The third coupling ring (450) may be formed in a ring shape. Additionally, the third coupling ring (450) and the second coupling ring (440) may be formed as a single attached member. An elastic spring (S1) may be coupled to the upper part of the third coupling ring (450). At this time, the elastic spring (S1) supports the second waterproof ring (460) disposed on the upper side in a compressed state, so that an elastic force can be applied in the upward and downward directions. Accordingly, the elastic force acting on the third coupling ring (450) can be transmitted to the second coupling ring (440). Likewise, the elastic force transmitted to the second coupling ring (440) can be transmitted to the first coupling ring (430) to press the first waterproof ring (420). Accordingly, the first waterproof ring (420) can be compressed to seal the boundary portion (L) between the outer case (410) and the motor case (101).

[0068] The mechanical seal (400) of the present invention may include a second waterproof ring (460). The second waterproof ring (460) may be a member that seals the path leading from the outer case (410) to the spring coupling (200). The second waterproof ring (460) may be a member that seals the path from the third coupling ring (450) to the TM screw (300) from the spring coupling (200) to the mechanical seal placement space (A1). The second waterproof ring (460) may be formed in a shape in which a silicone part (461) formed of a silicone member formed in a circular ring shape and a coupling part (462) made of a ceramic material with an 'L'-shaped cross-section on the outside are combined. Such a second waterproof ring (460) may be formed in a size capable of sealing the space where the TM screw (300) is placed. Specifically, the inner diameter of the second waterproof ring (460) may be formed to be a size that is larger than the outer diameter of the TM screw (300). Additionally, the height of the second waterproof ring (460) may be formed to extend from the third coupling ring (450) to the motor case (101) which is the upper side of the mechanical seal placement space (A1). The second waterproof ring (460) can transmit an elastic force in the upward direction due to the elastic spring (S1) in which the coupling part (462) is coupled to the upper part of the third coupling ring (450). Accordingly, it can be supported by contacting the upper side of the mechanical seal placement space (A1).

[0069] Referring to FIGS. 1 to 7, a drone water collector according to one embodiment of the present invention may include a TM screw (300). The TM screw (300) may be a pivot shaft coupled to a spring coupling (200) to transmit power generated from a stepping motor (100) to an opening / closing part (600). The TM screw (300) may be in the form of a 30-degree trapezoidal screw.

[0070] Such a TM screw (300) may include a coupling part (910) that receives force and a part that is coupled to the opening / closing part (600).

[0071] The coupling coupling portion (910) may be a part that is coupled to the spring coupling (200). The coupling coupling portion (910) may be formed with a diameter that is smaller than that of the opening / closing coupling portion (910). Additionally, the coupling coupling portion (910) may be formed with a length from the spring coupling (200) to the second coupling ring (440).

[0072] The opening / closing coupling part (910) may be a part that is coupled to the TM nut (500) included in the opening / closing part (600). The opening / closing coupling part (910) may be formed with a length extending from the first coupling ring (430) to the TM nut (500). The opening / closing coupling part (910) may be formed in a shape that is coupled to the TM nut (500) by a screw coupling method. Such an opening / closing coupling part (910) may be inserted into the extra space (601) of the water collection drum coupling part (610) by passing through the TM nut (500) when rotated. At this time, as the TM screw (300) is coupled to and supported by the coupling coupling part (910) and is in a rotatable state, the opening / closing part (600) may be raised and lowered by the rotation of the TM screw (300).

[0073] FIG. 9 is a schematic diagram showing a water collection drum of a drone water collector according to one embodiment of the present invention.

[0074] Referring to FIG. 9, the water collection drum (800) can be a drum in which water is collected. The water collection drum (800) can be a cylindrical drum. The opening of the water collection drum (800) can be opened and closed by an opening / closing part (600).

[0075] Additionally, the water collection drum (800) may have a support bracket (810) formed in a ring shape along its outer surface. The support bracket (810) may be formed integrally with the water collection drum (800). The support bracket (810) may be formed in a circular ring shape and extend outward from the outer surface of the water collection drum (800). The support bracket (810) may have a plurality of cylindrical columns connected to the shaft fixing plate (630). The shaft fixing plate (630) may be maintained in a fixed state by means of such a support bracket (810).

[0076] FIG. 10 is a cross-sectional view showing the operation of a drone water collector according to one embodiment of the present invention.

[0077] FIG. 11 is a perspective view showing an open water collection drum according to one embodiment of the present invention.

[0078] Referring to FIGS. 10 and 11, first, the drone equipment moves to the location to be collected, and the water collection equipment is lowered using a winch so that the water collection equipment can be entered. Next, the TM screw (300) can be rotated by receiving power from the stepping motor (100). At this time, the opening / closing part coupled with the TM nut (500) can be raised through the TM screw (300). Additionally, the opening / closing part can be raised along a path guided by the shaft (700). Accordingly, as the opening / closing part (600), which acts as a stopper, is raised, the water collection drum (800) is opened so that water can be collected inside. When the water collection operation is finished, the TM screw (300) can be reversed to lower the opening / closing part (600). Accordingly, the water collection drum (800) is sealed again, and the water collection operation can be terminated.

[0079] The drone water sampler according to one embodiment of the present invention achieves weight reduction by using a stepping motor, and in particular, can be designed to enable vertical movement under conditions of water pressure by applying a spring coupling, mechanical seal, TM screw, TM nut, shaft shaft, and shaft shaft coupling part in the form of a ball bearing.

[0080] Although embodiments of the present invention have been described above, those skilled in the art may modify or change the present invention in various ways by adding, changing, deleting, or adding components without departing from the technical spirit of the present invention as described in the claims, and such modifications or changes shall also be deemed to be included within the scope of the rights of the present invention.

Claims

1. A stepping motor (100) formed by a motor that generates power; A spring coupling (200) coupled to the drive shaft (102) of the stepping motor (100); A TM screw (300) coupled to the spring coupling (200) and linked to the rotation of the drive shaft (102); A mechanical seal (400) coupled to the TM screw (300) to waterproof the stepping motor (100); A TM nut (500) in which an upward movement is formed in the rotation of the above TM screw (300); An opening / closing part (600) coupled with the above TM nut (500) and moved up and down by the above TM screw (300); and An axis shaft (700) that guides the operation path of the above opening / closing part (600); and A drone water collector comprising: a water collection drum (800) formed as a cylindrical drum in which water is collected is stored.

2. In Claim 1 The mechanical seal (400) is An outer case (410) that is combined with and supported by a motor case (101) that forms an exterior and protects the stepping motor (100); A first waterproof ring (420) positioned to seal the contact portion between the outer case (410) and the motor case (101); A first coupling ring (430) formed as a ring-shaped member that contacts the TM screw (300) to form a bushing bearing function and is attached to the inner side of the first waterproof ring (420); A second coupling ring (440) formed as a ring-shaped member arranged to be stacked on the upper side of the first coupling ring (430); A third coupling ring (450) stacked and arranged on the upper side of the second coupling ring (440) and having an elastic spring (S1) coupled to its upper side; and A drone water collector comprising: a second waterproof ring (460) formed in a ring shape and formed as a member that seals the path extending from the outer case (410) to the spring coupling (200).

3. In Claim 2 The above mechanical seal (400) is A drone water collector in which the elastic force transmitted to the second coupling ring (440) by the elastic spring (S1) is transmitted to the first coupling ring (430) to pressurize the first waterproof ring (420).

4. In Claim 1 The above opening / closing part (600) A drone water collector comprising: a shaft coupling part (620) that is coupled to the shaft (700) and formed in a bearing shape.

5. In Claim 1 The above opening / closing part (600) A drone water collector comprising: a shaft fixing plate (630) formed as a plate supporting the lower side of the shaft (700).

6. In Claim 5 The above water collection drum (800) is A drone water collector comprising: a support bracket (810) formed in a ring shape along the outer surface and connected to the shaft fixing plate (630) and a plurality of cylindrical columns.

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