KR20240129896A - Underwater Cutting Apparatus on Screw of Small Boat - Google Patents

Abstract

The present invention relates to a small vessel underwater screw foreign matter removal device, and more specifically, to a "small vessel underwater screw foreign matter removal device" which, when a foreign matter (foreign substance), particularly a rope, etc., is wrapped around a screw of a small vessel during operation, making it difficult to operate the vessel, enables a worker to directly use the device of the present invention to touch the rope, etc., wrapped around the screw on board, thereby cutting and removing the foreign matter underwater.
According to one embodiment of the present invention, a small vessel underwater screw foreign matter cutting device is for cutting by closely fixing and attaching to an underwater foreign matter without shaking, and may include a driving unit that generates rotational power from a driving motor through a shaft built into a housing pipe, and a reducer that mediates between the driving motor and the shaft to increase rotational torque, a power conversion unit in which first and second bevel gears mesh with each other within a top housing and a bottom housing and rotate in conjunction with the shaft, and a gear shaft portion that rotates together with the second bevel gear is made watertight by a U-packing, a cutting unit in which a circular cutting blade that rotates in conjunction with the gear shaft portion protrudes into a cutting slot formed in the front end of a cover member to cut, and a gripping unit in which an “ㄱ” shaped grip holding bar slides along a first tube pipe in front of the cover member and is guided along a second tube pipe so as to be elastically compressed and then returned.

Description

{Underwater Cutting Apparatus on Screw of Small Boat}

The present invention relates to a small vessel underwater screw foreign matter removal device, and more specifically, to a "small vessel underwater screw foreign matter removal device" which, when a foreign matter (foreign substance), particularly a rope, etc., is wrapped around a screw of a small vessel during operation, making it difficult to operate the vessel, enables a worker to directly use the device of the present invention to touch the rope, etc., wrapped around the screw on board, thereby cutting and removing the foreign matter underwater.

Typically, an engine that generates propulsion is installed in an engine room formed at the back of a ship, and this engine has a screw with rotating blades that extends long and is installed outside the hull.

That is, when the screw rotates in the forward or reverse direction by the driving force of the engine, the rotary blade attached to the end of the screw rotates to obtain propulsive force.

However, during the operation of a ship, there are many cases where various foreign substances such as ropes, seaweed, or discarded nets floating on the sea drift and are sucked into the rotating screw and become entangled.

Foreign matter (foreign object) that gets wrapped in this way can stop the rotation of the screw or cause it to malfunction, which can cause serious maritime safety problems for the ship.

In order to remove foreign substances wrapped around screws, small vessels use a sickle or a tool with a sickle attached to the end of a long pole to manually remove them.

Additionally, it was common to tow the ship to the shore, lift it, and then remove it directly on land, or to use divers to remove it while the ship was floating in the water.

However, the conventional methods described above are often ineffective in removing foreign substances, and divers performing the removal work are always exposed to risk.

In other words, a propulsion screw is installed at the rear of the shelf, which rotates in both forward and reverse directions to propel the ship forward or backward.

A propulsion screw has a number of rotating blades attached to it, and when the propulsion screw rotates at high speed, these rotating blades also rotate, thereby forming a vortex toward the rear of the ship for propulsion, thereby moving the ship.

When a ship is underway, the propulsion screw is always in a rotating state, and since there is often a lot of foreign matter floating on the sea, it is common for foreign matter to be sucked into the propulsion screw while the ship is underway.

In particular, there are cases where relatively long ropes, nets, etc. among foreign substances are sucked into the propulsion screw side, and if the ropes, etc. are wrapped around a shaft that rotates at high speed, the shaft and screw can no longer rotate and malfunction.

At this time, sailors on board the ship usually dive into the water to manually remove the ropes entangled around the shaft, but removing them this way is not only cumbersome, but also has a high possibility of causing a safety accident. In particular, if the propulsion screw rotates due to an error during the rope removal process, there is a risk that this could lead to a large-scale disaster.

A rope cutter or foreign matter removal device is disclosed to solve these problems.

In order to remove foreign substances without the crew having to dive in themselves, devices are disclosed that attach a cutting section such as a sickle to the tip of a long rod-shaped cutter to cut foreign substances such as ropes, or that operate the cutting section by a motor to automatically cut the ropes.

However, the disclosed devices are being used in a limited manner because it is difficult to easily cut ropes or the like that are strongly entangled with a screw.

Korean Patent Registration No. 10-1390780, title of the invention: "Assembly including a ship screw foreign matter cutting device" (Registration date: 2014.04.24.)

The present invention was created to solve the above problems and needs, and the purpose of the present invention is to provide an underwater screw foreign matter removal device for a small vessel, which allows a worker to cut and remove the rope or the like wrapped around the screw underwater when, during operation of a small vessel, a foreign matter (foreign object), particularly a rope or the like, is wrapped around the screw, making it difficult to operate the vessel.

In order to achieve the above object, a small vessel underwater screw foreign matter removal device according to an embodiment of the present invention is for cutting by closely fixing and fixing an underwater foreign matter without shaking, and includes a driving unit that generates rotational power from a driving motor through a shaft built into a housing pipe, and a reducer that mediates between the driving motor and the shaft to increase rotational torque, a power conversion unit in which first and second bevel gears are meshed and rotated within a top housing and a bottom housing in conjunction with the shaft, and a gear shaft portion that rotates together with the second bevel gear is made watertight by a U-packing, a cutting unit in which a circular cutting blade that rotates in conjunction with the gear shaft portion protrudes into a cutting slot formed in the front end of a cover member to cut, and a gripping unit in which an "ㄱ" shaped grip holding bar slides along a first tube pipe in front of the cover member and is guided along a second tube pipe to be elastically compressed and then returned, and the When the cutting part approaches the underwater foreign substance, the grip part in front of the cutting part first comes into contact with the underwater foreign substance and is adhered and fixed, and the grip holding bar is pressed along the first tube, and the cutting blade is exposed by penetrating the grip slot formed in the grip holding bar to cut the underwater foreign substance.

According to the present invention, the conventional problem of making it very difficult to easily cut underwater foreign substances such as ropes that are not fixed and shake violently according to the flow of waves in water such as the sea, lake, river, etc. and are strongly entangled with the screws of a ship is solved, and there is an advantage in that the underwater foreign substances shaking can be easily cut while firmly holding them through the gripping portion.

In addition, there is an advantage in that a reducer is interposed between the driving motor and the shaft to lower the rotational speed generated from the driving motor and amplify the rotational torque, thereby providing a rotational cutting force that can rotate constantly while overcoming high resistance in water.

In addition, there is an advantage in that the lip of the U-packing faces outward, so that when the bottom surface is compressed by external water pressure, the inner diameter of the lip elastically tightens the outer diameter of the gear shaft portion, thereby enabling the gear shaft portion to be watertight while rotating.

In addition, there is an advantage in that the first and second tubes can stably induce forward and backward movement so that the holding bar can smoothly hold the foreign substance in the water when the holding bar squeezes the foreign substance in the water in front of the cutting blade.

In addition, since an elastic member is built into the first tube to provide elasticity, there is an advantage in that the more the phage holding bar is compressed along the first tube, the more elastic restoring force can be provided proportionally.

Figure 1 is a perspective view showing the overall appearance of a small vessel underwater screw foreign matter removal device according to one embodiment of the present invention.
Figure 2 is a cross-sectional view showing the driving unit of a small vessel underwater screw foreign matter removal device according to one embodiment of the present invention.
Figure 3 is an enlarged perspective view of a portion of a small vessel underwater screw foreign matter removal device according to one embodiment of the present invention.
Fig. 4 is a perspective view showing the AA' cross section of Fig. 3.
Fig. 5 is another perspective view showing the AA' section of Fig. 3.
Figure 6 is an exploded perspective view showing a part of a small vessel underwater screw foreign matter removal device according to one embodiment of the present invention from a different angle.
FIG. 7 is a perspective view showing a part of a small vessel underwater screw foreign matter removal device according to one embodiment of the present invention from another angle.

The present invention may have various modifications and embodiments, and specific embodiments are illustrated in the drawings and described in detail in the detailed description.

However, this is not intended to limit the present invention to specific embodiments, but should be understood to include all modifications, equivalents, or substitutes included in the spirit and technical scope of the present invention.

When it is said that a component is "connected" or "connected" to another component, it should be understood that it may be directly connected or connected to that other component, but there may also be other components present in between.

On the other hand, when it is said that a component is "directly connected" or "directly connected" to another component, it should be understood that there are no other components in between.

The terminology used in this specification is only used to describe specific embodiments and is not intended to limit the present invention. The singular expression includes the plural expression unless the context clearly indicates otherwise.

In this specification, it should be understood that the terms “include” or “have”, etc., are intended to specify the presence of a feature, number, step, operation, component, part or combination thereof described in the specification, but do not exclude in advance the possibility of the presence or addition of one or more other features, numbers, steps, operations, components, parts or combinations thereof.

The terms first, second, etc. may be used to describe various components, but the components should not be limited by the terms. The terms are used only to distinguish one component from another.

Additionally, terms such as “unit” described in the specification mean a unit that processes at least one function or operation, which may be implemented by hardware, software, or a combination of hardware and software.

In addition, it is to be understood that components of the embodiments described with reference to each drawing are not limited to the embodiments described herein, but may be implemented to be included in other embodiments within the scope in which the technical spirit of the present invention is maintained, and may also be reimplemented as one embodiment in which multiple embodiments are integrated, even if a separate description is omitted.

In addition, when explaining with reference to the attached drawings, identical components are given identical or related reference symbols regardless of the drawing symbols, and redundant descriptions thereof are omitted.

In describing the present invention, if it is determined that a detailed description of a related known technology may unnecessarily obscure the gist of the present invention, the detailed description will be omitted.

In the past, it was very difficult to easily cut ropes and other underwater foreign objects that were not fixed and were strongly entangled with the screws of ships due to the strong shaking caused by the flow of waves in water such as the sea, lake, or river.

Accordingly, the present invention proposes a small-sized vessel underwater screw foreign matter removal device capable of firmly grasping and cutting off and removing underwater foreign matters such as ropes wrapped around a screw when foreign matters, particularly ropes, are wrapped around a screw of a vessel during operation, making it difficult to operate the vessel.

FIG. 1 is a perspective view showing the overall appearance of a small vessel underwater screw foreign matter removal device according to an embodiment of the present invention, FIG. 2 is a cross-sectional view showing a driving unit of a small vessel underwater screw foreign matter removal device according to an embodiment of the present invention, and FIG. 3 is an enlarged perspective view showing a part of a small vessel underwater screw foreign matter removal device according to an embodiment of the present invention.

In addition, FIG. 4 is a perspective view showing the A-A' cross-section of FIG. 3, FIG. 5 is another perspective view showing the A-A' cross-section of FIG. 3, FIG. 6 is an exploded perspective view showing a part of a small vessel underwater screw foreign matter removal device according to an embodiment of the present invention from another angle, and FIG. 7 is a perspective view showing a part of a small vessel underwater screw foreign matter removal device according to an embodiment of the present invention from another angle.

Referring to the drawings mentioned above, a small vessel underwater screw foreign matter removal device (10) according to an embodiment of the present invention is a small vessel underwater screw foreign matter removal device for cutting by closely fixing and cutting underwater foreign matter so as not to shake, comprising: a drive unit (100) that generates rotational power from a drive motor (110) through a shaft (130) built into a housing pipe (120), and a reducer (140) that mediates between the drive motor (110) and the shaft (130) to increase rotational torque; a gear shaft unit (250) that rotates together with the second bevel gear (220) by interlocking with the shaft (130) so that first and second bevel gears (210, 220) rotate within a top housing (230) and a bottom housing (240), and is watertight by a U-packing (260). It includes a power conversion unit (200), a cutting unit (300) in which a circular cutting blade (310) that rotates in conjunction with the gear shaft unit (250) protrudes into a cutting slot (320s) formed in the front end of the cover member (320) to cut, and a grip holding unit (400) in which an “ㄱ” shaped grip holding bar (410) slides along a first tube (420) in front of the cover member (320) and is guided along a second tube (430) to be elastically compressed and then returned.

In addition, when the cutting part (300) is brought close to the underwater foreign substance, the grip part (400) in front of the cutting part (300) first comes into contact with the underwater foreign substance and adheres to it, and the grip holding bar (410) is pressed along the first tube (420), and the cutting blade (310) is exposed by penetrating the grip slot (410s) formed in the grip holding bar (410) to cut the underwater foreign substance.

In addition, the power conversion unit (200) is sealed with a gasket member (262) between the top housing (230) and the bottom housing (240), but the inside can be exposed by separating the top housing (230) from the bottom housing (240).

Additionally, the top housing (230) can be sealed with an O-ring member (261) at the surface where it meets the housing pipe (120).

In addition, the gear shaft part (250) is supported by a bushing member (270) mounted on one side of the top housing (230) and by a bearing member (271) mounted on the bottom housing (240) on the other side. However, when the U-packing (260) is installed under the bearing member (271), the lip of the U-packing (260) can face outward.

In addition, the grip portion (400) includes an elastic member (440) mounted within the first tube (420), and the elastic member (440) can provide a restoring force proportionally as the grip holding bar (410) is compressed along the first tube (420).

In addition, the grip portion (400) includes a protrusion (450) formed along the front edge of the grip holding bar (410), and the protrusion (450) can dig into the surface of the underwater foreign substance and become attached.

Then, the configuration and operation of a small vessel underwater screw foreign matter removal device (10) according to one embodiment of the present invention will be described in detail as follows.

The small vessel underwater screw foreign matter removal device (10) proposed by the present invention is a device for cutting by closely fixing and securing an underwater foreign matter without shaking, and is composed of a driving unit (100) that largely generates a rotational driving force, a power conversion unit (200) that converts the direction of the rotational driving force generated by the driving unit (100), a cutting unit (300) that actually cuts the underwater foreign matter by the power converted by 90° in the direction by the power conversion unit (200), and a holding unit (400) that fixes the underwater foreign matter and maintains a state in which it is easy to cut it.

First, the driving unit (100) will be described.

The driving unit (100) is a device that generates rotational power from a driving motor (110) through a shaft (130) built into a housing pipe (120), as shown in FIGS. 1 and 2, and increases rotational torque by having a reducer (140) act as an intermediary between the driving motor (110) and the shaft (130).

The driving unit (100) proposed by the present invention may include a driving motor (110), a housing pipe (120), a shaft (130), a reducer (140), a main handle (150), an auxiliary handle (160), a switch (170), and a control unit (180).

The drive motor (110) may be a BLDC (Brushless DC) motor that provides rotational driving force, may be driven by voltage supplied from the ship or DC 24 V power, and is configured to be protected externally by a motor case.

Additionally, the driving motor (110) can be supplied with power by being installed adjacent to a lithium battery (not shown) with a power cable or by being worn separately by the user.

The housing pipe (120) is a pipe-shaped member that connects the driving unit (100) and the power conversion unit (200). It is formed long in the longitudinal direction and a shaft (130) is installed inside to be rotatable along the longitudinal direction.

The shaft (130) is a power shaft that can rotate smoothly within the housing pipe (120) and can transmit the rotational power generated from the driving motor (110) to the power conversion unit (200).

The reducer (140) acts as an intermediary between the drive motor (110) and the shaft (130) to lower the speed of the rotational power generated from the drive motor (110) while increasing the rotational torque, thereby providing a rotational cutting force to facilitate cutting of underwater foreign substances that are tightly bound by the cutting section (300) described below.

That is, the reducer (140) proposed by the present invention is a mechanical energy conversion device that can reduce the rotational speed of the driving motor (110) to amplify the torque, and is an important mechanical element that can rotate while overcoming high resistance underwater.

In addition, a main handle (150) may be formed on one side of a driving motor (110) protected by a case so that a user can hold it with his/her hand, and an auxiliary handle (160) may be formed in the middle of a housing pipe (120).

Additionally, a switch (170) for controlling the driving motor (110) may be attached to the main handle (150).

Here, there is a control unit (180) electrically connected to a switch (170) adjacent to the driving motor (110), and the control unit (180) can ensure the stable operation of the driving motor (110) and block the power supply to the driving motor (110) due to overload, thereby ensuring the safety of the driving motor (110).

In addition, the control unit (180) controls the operation of the driving motor (110) and the reducer (140). Specifically, when power is supplied to the driving motor (110), the operation of the driving motor (110) is turned ON/OFF. In addition, the control unit can control the rotation speed of the driving motor (110), the deceleration degree of the reducer (140), and the rotational torque of the reducer (140) through a sensor.

In addition, by controlling the speed of the driving motor (110) and the torque of the reducer (140) through the control unit (180), an appropriate speed is provided according to the size, material, and characteristics of the foreign substance removed by the cutting blade (310) described below, so that smooth and efficient cutting can be performed.

Next, the power conversion unit (200) of the present invention will be described in detail with reference to FIGS. 3 to 6, etc.

As shown in FIGS. 3 to 6, the power conversion unit (200) is configured such that the first and second bevel gears (210, 220) are meshed and rotate within the top housing (230) and the bottom housing (240) in conjunction with the shaft (130), and the gear shaft unit (250) that rotates together with the second bevel gear (220) is watertight by a U-packing (260).

That is, the power conversion unit (200) may be configured to include a first bevel gear (210), a second bevel gear (220), a top housing (230), a bottom housing (240), a gear shaft unit (250), a U-packing (260), an O-ring member (261), a gasket member (262), a bush member (270), and a bearing member (271).

The first bevel gear (210) is connected to the shaft (130) as shown in FIGS. 4 and 5 and rotates at the same speed as the shaft (130) rotates.

One end of the first bevel gear (210) is surrounded by the top housing (230) and the bottom housing (240) and accommodated inside, and the other end of the first bevel gear (210) is positioned inside the housing pipe (120) so as to be connected to the shaft (130). At this time, a ball bearing (211) is provided to support it so that it can rotate.

The other end of the first bevel gear (210) is connected to the shaft (130) by a spline socket (212).

For this purpose, the end of the shaft (130) is formed into a spline shape and spline-connected with a spline socket (212).

Additionally, a thrust bearing (thrust nearing, 213) is placed between the top housing (230) and the spline socket (212) at the other end of the first bevel gear (210) to support rotation in the axial direction.

In addition, the housing pipe (120) is coupled to the top housing (230) by the gear pipe (214), and the spline socket (212) and the thruster bearing (213) are accommodated inside the gear pipe (214).

The second bevel gear (220) is placed in the center of the bottom housing (240), and the first bevel gear (210) is gear-coupled to the second bevel gear (230) at a 90° angle.

Therefore, when the first bevel gear (210) rotates, the second bevel gear (220) rotates in a 90° orthogonal direction.

The top housing (230) forms a space inside together with the bottom housing (240) to accommodate the first bevel gear (210) and the second bevel gear (220).

That is, the top housing (230) is combined with the housing pipe (120) and accommodates a first bevel gear (210), a second bevel gear (220), and a gear shaft portion (240) inside.

In addition, the top housing (230) can be sealed with an O-ring member (261) at the surface where it meets the housing pipe (120), and can be sealed with a gasket member (262) between the top housing (230) and the bottom housing (240) so that the interior can be sufficiently watertight.

In particular, the top housing (230) is separated from the bottom housing (240) to allow the interior to be exposed, as shown in FIG. 6, for easy maintenance.

That is, the top housing (230) has a structure that can be opened and closed from the bottom housing (240) with a plurality of bolts, and can be sealed with the bottom housing (240) and a gasket member (262).

The bottom housing (240) is located below the top housing (230) and supports the top housing (230) from below while also supporting the gear shaft (250) together with the top housing (230) so that the gear shaft (250) can rotate smoothly.

In addition, the bottom housing (240) must be sealed for waterproofing at the point where each component is connected to the top housing (230), and a number of O-ring members are used for this purpose.

In addition, the bottom housing (240) can be fastened to the gear shaft portion (250) and the portion where each component is connected by using a snap ring so that it does not come off easily.

Accordingly, the top housing (230) is connected to the shaft (130) on one side and has a first bevel gear (210) arranged thereon, and the bottom housing (240) is connected to the cutting part (300) on the other side and has a gear shaft part (250) arranged thereon.

That is, the gear shaft portion (250) can be supported on one side by a bushing member (270) mounted on the top housing (230) and on the other side by a bearing member (271) mounted on the bottom housing (240).

In particular, in order to ensure watertightness within the bottom housing (240), the gear shaft portion (250) may be installed with the U-packing (260) below the bearing member (271) so that the lip of the U-packing (260) faces outward (downward).

That is, the U-packing (260) is made of thermoplastic polyurethane material and wraps the rotating gear shaft portion (250) to make it watertight while allowing the gear shaft portion (250) to rotate.

In addition, the U-packing (260) has a “U” shaped lip formed, and when the bottom is compressed by external hydraulic pressure, the inner diameter of the lip tightens the gear shaft portion (250) to improve the sealing force.

At this time, the U-packing (260) is configured so that the lip faces outward, so that the bottom surface is compressed by external water pressure, and the inner diameter of the lip tightens the outer diameter of the gear shaft portion (250) to ensure watertightness.

Next, the cut section (300) will be described.

As shown in FIGS. 4 and 5, the cutting section (300) is a device in which a circular cutting blade (310) that rotates in conjunction with a gear shaft section (250) protrudes into a cutting slot (320s) formed at the front end of a cover member (320) to perform cutting.

That is, the cutting unit (300) proposed by the present invention is configured to actually cut foreign substances in water by power converted by the power conversion unit (200), and may be configured to include a cutting blade (310), a cover member (320), a first pressing plate (330), a second pressing plate (340), etc.

Here, the cutting blade (310) is combined with the gear shaft (250) to cut and remove foreign substances wound or stuck to the screw while rotating, and allows cutting work to be performed every time the circular saw blade rotates in the outer circumferential direction.

The cover member (320) performs a cover function that protects the user from the sharp cutting blade (310) while preventing the cutting blade (310) from damage from the outside while accommodating the cutting blade (310) inside.

In addition, the cover member (320) is closed on all sides with only the front side open to the cutting slot (320s), thereby protecting the user, while at the same time preventing direct impact with external objects so that the cutting blade (310) is not damaged.

In addition, the cutting blade (310) can be firmly fixed to one end of the gear shaft (250) by supporting the first pressing plate (330) on the inside and fixing the second pressing plate (340) on the outside, as shown in FIG. 5.

Lastly, we will explain the holding part (400).

The holding portion (400) is a device for catching foreign substances in water, as shown in FIGS. 3 to 7, in which an “ㄱ” shaped holding bar (410) slides along a first tube (420) in front of a cover member (320) and is simultaneously guided along a second tube (430) to be elastically compressed and then returned.

In particular, in the past, it was very difficult to easily cut ropes and other underwater foreign substances that were not fixed and were strongly entangled with the screws of ships due to the strong shaking caused by the flow of waves in water such as the sea, lake, or river.

Accordingly, the holding portion (400) proposed by the present invention is located in front of the cutting portion (300) and first comes into contact with the foreign substance in the water and adheres and fixes it, so that the foreign substance in the water can be firmly held while the foreign substance in the water is cut and removed by the cutting portion (300).

That is, when the cutting part (300) is brought close to an underwater foreign substance, the grip part (400) in front of the cutting part (300) first comes into contact with the underwater foreign substance and adheres and fixes it, and the grip holding bar (410) is pressed along the first tube (420), and the cutting blade (310) is exposed by penetrating the grip slot (410s) formed in the grip holding bar (410) to cut the underwater foreign substance.

Here, the grip part (400) proposed by the present invention may include a grip holding bar (410), a first tube tube (420), a second tube tube (430), an elastic member (440), and a protrusion (450).

The phage holding bar (410) has an “ㄱ” shape with one side open, and as shown in FIG. 3 and FIG. 7, it can slide along the first tube (420) in front of the cover member (320) and be guided along the second tube (430) at the same time.

In particular, the phage holding bar (410) is open on one side, allowing foreign substances such as relatively long ropes to be pulled out immediately without getting caught or clumped up.

As shown in FIG. 7, the first tube (420) is a square pipe tube, and is embedded in the length direction on one side of the cover member (320), so that the holding bar (410) can be guided to slide.

The second tube (430), as shown in FIG. 7, is a circular tube and is installed longitudinally on the upper side of the cover member (320), so that it can guide the holding bar (410) while maintaining its center when it slides along the first tube.

That is, the first and second tubes (420, 430) can stably induce forward and backward movement so that the holding bar (410) can smoothly hold foreign substances in the water when the holding bar (410) squeezes foreign substances in the water in front of the cutting blade (310).

The elastic member (440) is an elastic spring, and as shown in FIG. 7, etc., can be installed in the first tube (420) to provide elastic force, and can provide elastic restoring force proportionally as the grip holding bar (410) is compressed along the first tube (420).

The uneven protrusion (450) can be formed along the front edge of the phage holding bar (410) as shown in FIG. 7, and can dig into the surface of underwater foreign substances and become attached, thereby increasing the gripping power of the phage holding bar (410).

In this way, the small vessel underwater screw foreign matter removal device (10) according to embodiments of the present invention can be expected to have the following effects.

According to the present invention, the conventional problem of being very difficult to cut underwater foreign substances such as ropes that are not fixed and shake violently according to the flow of waves in water such as the sea, lake, river, etc. and are strongly entangled with the screws of a ship is solved, and there is an advantage in that the underwater foreign substances shaking can be easily cut while firmly holding them through the gripping portion (400).

In addition, a reducer (140) is interposed between the drive motor (110) and the shaft (130) to lower the rotation speed generated from the drive motor (110) and amplify the rotational torque, thereby providing a rotational cutting force that can rotate at a constant rate while overcoming high resistance in water.

In addition, there is an advantage in that the lip of the U-packing (260) faces outward so that the bottom surface is compressed by external water pressure, and the inner diameter of the lip elastically tightens the outer diameter of the gear shaft portion (250), thereby enabling the gear shaft portion to be watertight while rotating.

In addition, there is an advantage in that the first and second tubes (420, 430) can stably induce forward and backward movement so that the holding bar (410) can smoothly hold the foreign substance in the water when the holding bar (410) squeezes the foreign substance in the water in front of the cutting blade (310).

In addition, since an elastic member (440) is built into the first tube (420) to provide elasticity, there is an advantage in that elastic restoring force can be provided proportionally as the phage holding bar (410) is compressed along the first tube (420).

The above description is merely an illustrative description of the technical idea of the present invention, and those skilled in the art will appreciate that various modifications, changes, and substitutions may be made without departing from the essential characteristics of the present invention.

Accordingly, the embodiments disclosed in the present invention and the attached drawings are not intended to limit the technical idea of the present invention but to explain it, and the scope of the technical idea of the present invention is not limited by these embodiments and the attached drawings.

The scope of protection of the present invention should be interpreted by the claims set forth below, and all technical ideas within a scope equivalent thereto should be interpreted as being included in the scope of the rights of the present invention.

10: Small vessel underwater screw foreign matter removal device
100 : Drive Unit
110: Drive motor 120: Housing pipe
130 : Shaft 140 : Reducer
150 : Main handle 160 : Auxiliary handle
170 : Switch 180 : Control Unit
200 : Power conversion unit
210: 1st bevel gear 220: 2nd bevel gear
230: Top housing 240: Bottom housing
250: Gear shaft 260: U-packing
261: O-ring part 262: Gasket part
270: Bushing member 271: Bearing member
300 : Cut section
310: Cutting blade 320: Cover member
330: First pressing plate 340: Second pressing plate
400 : Phage Department
410: Phage holding bar 420: 1st tube
430: Second tube 440: Elastic member
450 : Bumps

Claims (6)

In a small vessel underwater screw foreign matter removal device for cutting by closely contacting and fixing underwater foreign matter without shaking,
A driving unit that generates rotational power from a driving motor through a shaft built into a housing pipe, and a reducer mediates between the driving motor and the shaft to increase rotational torque;
A power conversion unit in which the first and second bevel gears mesh with each other and rotate within the top housing and the bottom housing in conjunction with the above shaft, and the gear shaft portion that rotates together with the second bevel gear is made watertight by a U-packing;
A cutting part in which a circular cutting blade that rotates in conjunction with the above gear shaft part protrudes into a cutting slot formed in the front end of the cover member to perform cutting; and
A "ㄱ" shaped phage holding bar is slid along the first tube pipe in front of the cover member and at the same time, is guided along the second tube pipe to be elastically compressed and then returned, including a holding portion;
A small vessel underwater screw foreign matter removal device characterized in that when the cutting part approaches the underwater foreign matter, the grip part in front of the cutting part first comes into contact with the underwater foreign matter and is adhered and fixed, and the grip holding bar is pressed along the first tube, and the cutting blade is exposed by penetrating the grip slot formed in the grip holding bar to cut the underwater foreign matter. In paragraph 1,
A small vessel underwater screw foreign matter removal device characterized in that the power conversion unit is sealed with a gasket member between the top housing and the bottom housing, and the inside is exposed by separating the top housing from the bottom housing. In the first paragraph,
A small vessel underwater screw foreign matter removal device, characterized in that the top housing is sealed with an O-ring member at the surface where it meets the housing pipe. In paragraph 1,
A small vessel underwater screw foreign matter removal device characterized in that the gear shaft part is supported on one side by a bushing member mounted on the top housing and on the other side by a bearing member mounted on the bottom housing, and the U-packing is installed under the bearing member so that the lip of the U-packing faces outward. In paragraph 1,
The above-mentioned grip portion includes an elastic member mounted within the first tube,
A small vessel underwater screw foreign matter removal device, characterized in that the elastic member provides a restoring force proportionally as the phage holding bar is compressed along the first tube. In the first paragraph,
The above-mentioned grip portion includes a protrusion formed along the front edge of the grip holding bar,
A small vessel underwater screw foreign matter removal device characterized in that the above-mentioned protrusions dig into and become attached to the surface of the underwater foreign matter.