KR102330703B1 - Small light weight grinding machine for ship - Google Patents

Abstract

The present invention, to polish the surface as a pre-treatment of the painting operation on the surface of the ship; a housing in which a portion facing the surface of the vessel is opened and a space is formed therein; a housing provided inside the housing and rotatably shaft-coupled to rotate by receiving a rotational force and having a polishing space provided with polishing means for polishing the surface of the vessel during rotation; the grinding means; a discharge means provided in the housing to discharge the dust collected therein; In the small and lightweight polishing apparatus for ships comprising; The power means includes: a brushless direct current motor/BLDC motor mounted on the outer surface of the housing and configured to generate rotational force by receiving power regulated through the control of the control means; The vacuum suction impeller is rotatably coupled to the housing so as to rotate by receiving the rotational force generated by the brushless motor. and a rotating shaft configured to rotate the polishing wheel at the same time, respectively.

Description

Small light weight grinding machine for ship

The present invention relates to a polishing apparatus adapted to polish the surface of the surface of a ship by pre-treatment of painting work, and more particularly, it is small, light, and structurally simple, so it is easy to carry, and work efficiency and production efficiency are increased as well as By vacuum suctioning and removing dust generated during work, the sanitary environment of workers can be improved. It relates to the grinding device.

In general, a ship performs a painting process of applying a paint of a certain thickness to the surface every unit time set as a part of preventing corrosion by salt when used for a long time and extending the lifespan.

At this time, in order to apply the paint stably and uniformly to the surface of the vessel, it is necessary to remove foreign substances or impurities (brass) adhering to the surface of the vessel and undergo a surface treatment process to adjust the roughness before performing the painting operation.

In order to perform such a surface treatment process of a ship, in the prior art, in a state in which an operator held a grinder operated by air supply, the surface of the ship was polished one by one to remove impurities, and then a paint was applied.

However, such a conventional surface treatment process of a ship takes a long time, greatly lowering the efficiency and productivity of the work, as well as exposing the worker to musculoskeletal disorders, environmental pollution caused by paint dust, and the worker inhaling the paint dust during work. There were problems such as exposure to industrial disasters and the problems of accelerating the extinction of fish and shellfish due to the imposax phenomenon (neutralization) of fish and shellfish as the generated dust flows into the sea and disturbs the marine ecosystem.

In addition, since the surface of the ship is not uniformly polished, subsequent painting work is not performed properly, resulting in paint peeling off after time has elapsed, resulting in a problem in that maintenance costs are consumed; There is a problem in that safety accidents such as injuries to workers frequently occur due to the rotating blade of the grinder rotating at high speed.

In addition, there was a health and hygiene problem that caused respiratory diseases of workers due to the removed foreign substances or dust.

Accordingly, in recent years, various polishing apparatuses have been proposed to solve the problems of surface polishing of a ship according to manual work by an operator as described above.

As one of them, there is a patent registration No. 10-1347597 (name: Air Polishing Device for Ships), which is provided in a cylindrical shape with a certain diameter with an open lower part as known in the Gazette, and has a number of a body in which a brush is planted, coupling rods having a predetermined length are respectively protruded from both sides of the upper side, a connecting rod is installed between the coupling rods, and one end of the discharge pipe is installed in communication with one end of the upper side; a rotating body installed in the upper center of the body to rotate the rotating shaft by high-pressure air supplied from the outside through a supply hose; a rotating blade for grinding the surface of the ship by rotating while being chuk-seol on the rotating shaft of the rotating body; a pair of wheels installed on the coupling rod of the body so as to be adjustable in height to support the body; a handle provided in the form of a pipe of a certain length having one end fixed to the connecting rod of the body, and a handle integrally formed with a connector so that the other end of the discharge hose connected to the upper end of the discharge pipe of the body can be connected; An air polishing apparatus for ships is described, including; a collecting network installed at the other end of the handle and collecting foreign substances or dust removed by the rotary blade through the discharge pipe, discharge hose, and handle of the body.

On the other hand, in the patent registration No. 10-1573784 (name: vibratory polishing apparatus for ships), as is known in the Gazette, it is provided in the form of a rectangular parallelepiped with an open bottom, and is formed by a partition wall of a predetermined shape on the bottom surface. In the vacuum part of the space, foreign substances are sucked, and a discharge pipe communicating with the vacuum part and discharging foreign substances is formed to protrude on the rear surface, and a fastening hole is provided in each upper corner part, and a pair of wheels are mounted at the rear for convenient movement and a body; a driving motor installed on the upper portion of the main body to generate rotational power by an external power supply; an eccentric rotation unit installed inside the vacuum unit formed on the bottom surface of the main body to be rotated by receiving the rotational power of the driving motor to suck foreign substances into the vacuum unit; It is integrally mounted on the bottom surface of the partition wall of the main body by a plurality of fastening means, and a suction hole of a predetermined diameter is formed in the center so that foreign substances sucked by the eccentric rotating unit through the suction hole can be introduced into the vacuum unit. a vacuum cover; a polishing unit which is rotated eccentrically by the eccentric rotating unit to polish the surface of the vessel; a connecting portion respectively installed at a corner portion of the main body so as to connect the abrasive unit to the main body integrally; A handle portion for fixing one end of an extension provided in the form of a predetermined length and pipe to the rear of the main body, and integrally forming a grippable handle on the other end of the extension to change the moving direction of the main body; A vibratory polishing apparatus for ships is described.

Korean Patent Application No. 10-2000-0079397 (2000.12.20.) Korean Patent Application No. 10-2009-0062405 (2009.07.09.)

However, in the conventional ship polishing devices as described above, a power device having a huge appearance and a weight of 100 kg or more according to the need for speed control and strong torque value of the rotating body to be polished through friction with the surface of the ship should be applied. There was a problem in that there was a limitation in the configuration of the device.

Accordingly, due to the increase in the total load, there is a problem in that when in use, it must be towed through a separate towing device such as a crane, and then transported and moved to the board of the ship.

In particular, when the crane (towing device) is insufficient, the crane standby time is excessively consumed, and there is a problem in that workability is deteriorated.

In addition, as it is large, heavy, and structurally complicated, it is inconvenient to carry, and there is a problem in that the quality of use is deteriorated.

In addition, there was a problem that it was difficult to apply in various cases such as a large area, a narrow area, a slope area, etc. where the grinding work space is wide.

That is, there is a problem in that the work quality is deteriorated when the worker works up and down depending on the work environment.

The present invention has been proposed to solve the problems of the prior art, and an object of the present invention is to be small, light, and structurally simple, so it is easy to carry, and work efficiency and production efficiency are increased, as well as dust generated during work. By vacuum suctioning and removing the have.

A small and lightweight polishing apparatus for a ship according to the present invention for achieving the object of the present invention as described above includes a housing in which a portion facing the surface of the ship is opened and a space is formed therein; a polishing means provided in the housing and rotatably shaft-coupled to rotate by receiving rotational force to polish the surface of the vessel during rotation; a discharge means provided in the housing to discharge the dust collected therein; In the small and lightweight polishing apparatus for ships comprising; The space of the housing may include: a polishing space (PS) which is spatially connected to an open portion facing the surface of the vessel and disposed with the polishing means; It is spatially communicated with the polishing space and is spatially connected to an exhaust pipe connected to the outer part of the housing and rotates by receiving the rotational force generated from the power means therein to vacuum suction the dust remaining in the polishing space. each having a vacuum suction space (VS) in which a vacuum suction impeller is disposed; The power means includes: a brushless direct current motor/BLDC motor mounted on the outer surface of the housing and configured to generate rotational force by receiving power adjusted through the control of the control means; The vacuum suction impeller and the vacuum suction impeller are rotatably coupled to the housing so as to rotate by receiving the rotational force generated by the brushless motor, respectively, with the center of the vacuum suction impeller and the polishing wheel of the polishing means as a rotation center line. and a rotating shaft configured to simultaneously rotate the polishing wheel, respectively.

The polishing means may include: a polishing wheel rotatably installed in the polishing space of the housing; an abrasive body detachably attached to the bottom surface of the polishing wheel and configured to polish the surface of the vessel on the bottom surface; and a pressing body for elastically pressing the abrasive body away from the end-of-the-year wheel to the surface of the ship.

One end is spatially connected through a connecting hose and an exhaust pipe connected to the vacuum suction space so as to be spatially connected, and the other end is a discharge pipe made of a 'pipe'-shaped tube body through which both ends are penetrated so that dust is discharged; , a binding body having one end bound to the discharge pipe and having the other end rotatably coupled to a part of the housing in an up, down, left and right direction, and a handle pipe in which the discharge pipe is coupled while penetrating therein and a handle is formed for a user to install by hand; The branch is characterized in that it further comprises a handrail.

In the rim portion of the opening in the housing, it is characterized in that the sealing ring is planted with a plurality of brushes so as to close the opening of the housing to the outside in close contact with the surface of the vessel.

In the small and lightweight polishing apparatus for ships according to the present invention made as described above, the power means for generating rotational force is small and light, and a brushless motor (BLDC) capable of generating rotational power having a high torque value compared to weight and volume. motor), so it is small, light, and structurally simple, so that it is easy to carry, thereby increasing work efficiency and production efficiency.

In addition, the effect of maximizing the work quality by enabling the operator to easily and stably perform the grinding work in a standing state through the vertical movement of the handrail and the housing even in the narrow or sloping area of the grinding work space on the ship. have

In addition, the dust generated during work is removed by vacuum suction through the discharge means, and the grinding work space can be closed to the outside through the sealing ring, so that the sanitary environment of the worker and the environmental protection of the work space can be improved. have an effect

1 is a schematic illustration showing a small and lightweight polishing apparatus for a ship according to an embodiment according to the present invention.
Figure 2 is a schematic illustration of some excerpts showing the housing and the handrail constituting the small and lightweight polishing apparatus for ships according to the present embodiment.
Figure 3 is a schematic illustration showing a small and lightweight polishing apparatus for ships according to the present embodiment.
4 and 5 are schematic illustrations of some excerpts showing the housing constituting the small and lightweight polishing apparatus for ships according to the present embodiment.
6 and 7 are some excerpts schematic illustration showing the state of use of the handrail constituting the small and lightweight polishing apparatus for ships according to the present embodiment.
9 is a schematic illustration of some excerpts showing the grinding means constituting the small and lightweight polishing apparatus for ships according to the present embodiment.
Figure 10 is a schematic illustration of some excerpts showing a sealing ring constituting a small and lightweight polishing apparatus for ships according to the present embodiment.
11 to 13 are some excerpts schematically illustrating the torque medium means constituting the small and lightweight polishing apparatus for ships according to the present embodiment.
14 is a schematic exemplary view showing the control state of the small and lightweight polishing apparatus for ships according to the present embodiment.

Hereinafter, with reference to the accompanying drawings, a detailed description will be given of a small and lightweight polishing apparatus for a ship according to a preferred embodiment of the present invention.

Embodiments of the present invention may be modified in various forms, and the scope of the present invention should not be construed as being limited to the embodiments described in detail below. This embodiment is provided to more completely explain the present invention to those of ordinary skill in the art. Accordingly, the shape of elements in the drawings may be exaggerated to emphasize a clearer description. It should be noted that in each drawing, the same member is shown with the same reference numerals in some cases. Detailed descriptions of well-known functions and configurations determined to unnecessarily obscure the gist of the present invention will be omitted.

1 to 10 are views showing a small and lightweight polishing apparatus 1 for a ship according to an embodiment according to the present invention. a housing 2 having an open facing portion and a space formed therein; a polishing means (3) provided inside the housing (2) and rotatably shaft-coupled to rotate by receiving rotational force to polish the surface of the vessel when rotating; a discharge means (4) provided in the housing (2) to discharge the dust collected therein to the outside; and a power means (6) configured to receive power through the control of the control means (5) for controlling the power of the power supply unit (51) to generate a rotational force to supply the rotational force to the grinding means (3).

That is, the grinding means 3 and the discharging means 4 receive rotational force generated by receiving power controlled through the control means 5 from the power means 6, respectively, and the housing 2 In addition to grinding the surface of the vessel in the interior, the dust formed during the grinding operation is discharged to the selected facility (dust absorption bag, etc.) through the discharge means (4).

Accordingly, as well as polishing the surface of the ship, it is possible to prevent the dust from invading the operator and the surrounding environment, so that the surface of the ship is safely polished.

In the small and lightweight polishing apparatus 1 for ships according to this embodiment, the space portion of the housing 2 is spatially connected to the open portion facing the surface of the ship and the polishing space portion in which the polishing means is disposed. (PS: Polishing space) and; It is spatially communicated with the polishing space (PS) and is spatially connected to the exhaust pipe 41 connected to the outer part of the housing (2) and rotates by receiving the rotational force generated by the power means (6) therein. and a vacuum suction space (VS) in which a vacuum suction impeller 42 configured to vacuum suction the dust remaining in the polishing space PS is disposed.

That is, the surface of the vessel is polished through the polishing means 3 in the polishing space PS of the housing 2, and the vacuum suction impeller 42 is rotated in the vacuum suction space VS. After the dust formed in the polishing space (PS) is sucked through the vacuum suction pressure formed through the , it is discharged to a selected facility (not shown) through the exhaust pipe 41 to be removed.

In the above, it is preferable that the abrasive space (PS) and the vacuum suction space (VS) are arranged so that the spaces are connected in series inside the housing (2).

In the small and lightweight polishing apparatus 1 for ships according to this embodiment made as described above, the power means 6 is mounted on the outer surface of the housing 2 and adjusted through the control of the control means 5 . a brushless motor (Brushless Direct Current motor/BLDC motor) 61 configured to receive power and generate rotational force; The center of the vacuum suction impeller 42 and the grinding wheel 31 of the grinding means 3 is rotatably coupled to the housing 2 to rotate by receiving the rotational force generated by the brushless motor 61 . It is made to include; a rotation shaft 62, each bound to a rotation center line, and configured to simultaneously rotate the vacuum suction impeller 42 and the polishing wheel 31, respectively, during rotation.

That is, the brushless motor 61 constituting the power means 6 and configured to generate rotational force by receiving power can generate rotational power having a high torque value compared to its weight and volume, so it is light and narrow. Because it is very easy to move to one work space or a large area, the operator can carry it lightly, and there is no risk of explosion due to explosion-proof because no sparks are generated, so safety is secured.

Existing general motors, as a pyrolytic agent in the paint, the risk of explosion remains, there is a problem that the safety is lowered.

As such, the power means 6 designed to generate the rotational force is small and light, and includes the brushless motor 61 capable of generating rotational power having a high torque value compared to weight and volume. As it is structurally simple and easy to carry, work efficiency and production efficiency are increased.

On the other hand, as the vacuum suction impeller 42 and the abrasive wheel 31 are respectively rotated at the same time through the rotation shaft 62 of the single power means 6, the structure is simple to improve productivity and operate. The occurrence of errors is reduced, and stability and miniaturization and weight reduction are realized.

In the small and lightweight polishing apparatus 1 for ships according to this embodiment made as described above, the polishing means 3 is a polishing wheel 31 rotatably installed in the polishing space PS of the housing 2 . )class; an abrasive body 32 detachably attached to the bottom surface of the polishing wheel 31 and configured to polish the surface of the vessel on the bottom surface; and a pressing body 33 for elastically pressing the abrasive body 32 away from the abrasive wheel 31 to the surface of the ship.

That is, by selectively receiving the controlled power of the control means (5) by the operator, the brushless motor (61) generates a rotational force; The polishing wheel 31 receives the rotational force generated by the brushless motor 61 through the rotation shaft 62 and rotates on the polishing space PS of the housing 2 .

Accordingly, the abrasive body 32 provided in the abrasive wheel 31 rotates and rubs against the surface of the ship, and the surface of the ship is polished by the generated frictional force.

That is, even if the abrasive body 32 is elastically pressed toward the surface of the ship by the pressing body 33 and there is a bent portion bent on the surface of the ship, the abrasive body 32 is uniformly contacted to achieve stable polishing.

The small and lightweight polishing apparatus 1 for ships according to the present embodiment made in this way has one end spatially connected through the exhaust pipe 41 and the connecting hose 43 so as to be spatially connected to the vacuum suction space (VS). A discharge pipe 71, the other end of which is made of a 'pipe'-shaped tube body through which both ends are penetrated so that dust is discharged, and one end is bound to the discharge pipe 71, and the other end is upper and lower on a part of the housing. A handrail having a binding body 72 rotatably coupled to the left and right, and a handle tube 74 in which the discharge tube 71 is coupled while penetrating therein, and a handle 73 is formed for the user to attach by hand; 7); is further included.

That is, after the user attaches the handle 73 provided on the handle 7 by hand, and then carries it to a desired position, the polishing operation is performed.

At this time, as the dust discharged from the exhaust pipe 41 is easily discharged to the rear of the worker through the discharge pipe 71, inconvenient 'equipment' such as separate 'hoses and pipes' do not coexist on the work flow. stability is realized.

In the above, the housing (2) is provided with a fixed shaft (21) to which the binding body (72) is shaft-coupled to be idling, so that the handrail (7) can rotate in the left and right directions with respect to the fixed shaft (21). is done

Meanwhile, the binding body 72 includes a rotor 75 rotatably coupled to the fixed shaft 21 ; It is shaft-coupled to the rotor 75 so as to be rotatably rotatable in the vertical direction, and the binder 76 is coupled to the discharge pipe 71 at the other end. ) may be made rotatable in up, down, left, and right directions.

Accordingly, even in a narrow or sloping part of the abrasive work space on a ship, the handrail 7 and the housing 2 can be easily and stably polished in a standing state through the up, down, left and right rotational movements. work quality can be maximized.

In the handle tube 74, a controller 52 is provided to apply an operation signal to control power to the control means 5 according to the operator's selective operation, so that the operator holds the handle by hand and It may be adapted to operate the controller 52 .

In the small and lightweight polishing apparatus 1 for ships according to this embodiment made as described above, in the rim portion of the opening in the housing 2, the opening of the housing 2 is in close contact with the surface of the vessel to the outside. A sealing ring 8 is provided with a plurality of brushes 81 to be closed.

That is, the dust generated during work is removed by vacuum suction through the discharge means 4, and the grinding work space can be closed to the outside through the sealing ring 8, so that the sanitary environment of the worker and the work space are improved. improve environmental protection.

The small and lightweight polishing apparatus 1 for ships according to the present embodiment made as described above is provided between the rotating shaft 62 and the driving shaft 34 of the polishing wheel 31, and in the brushless motor 61 Torque increasing means (9): to increase the torque while decelerating the generated rotational force to maintain a high torque pressure on the abrasive wheel (31): may be further included.

That is, by increasing the rotational pressure of the abrasive wheel 31 through the torque increasing means 9, the abrasive body 32 performs abrasive work on the vessel with high pressure, thereby realizing the high quality of the unmilling work. .

The torque increasing means 9 includes a sun gear 91 that is bearing-coupled to the housing 2 in an idling manner and is coupled to the rotation shaft 62 to receive rotational force and rotate; a ring gear 92 fixed to the housing 2 and having gear teeth disposed on an inner circumferential surface having a gap between the outer circumferential surface and the sun gear 91; It is disposed between the sun gear 91 and the ring gear 92 and is gear-coupled with the sun gear 91 and the ring gear 92, respectively, while rotating while the sun gear 91 rotates. It is configured to revolve around the sun gear 91 and includes a plurality of planetary gears 93 axially coupled to the drive shaft 34 to be idling.

That is, as the sun gear 91 rotates through the rotational force of the rotation shaft 62 , the planet gears 93 orbitally move inside the ring gear 92 to rotate the drive shaft 34 .

At this time, with respect to the rotational force of the sun gear 91, the driving shaft 34 is decelerated and the torque is increased, and the increased rotational pressure is applied to the polishing wheel 31, so that the massage operation is stably performed.

One embodiment of the present invention described above is merely exemplary, and those of ordinary skill in the art to which the present invention pertains will appreciate that various modifications and equivalent other embodiments are possible therefrom. . Therefore, it will be well understood that the present invention is not limited to the forms recited in the above detailed description. Therefore, the true technical protection scope of the present invention should be determined by the technical spirit of the appended claims. It is also to be understood that the present invention includes all modifications, equivalents and substitutions falling within the spirit and scope of the invention as defined by the appended claims.

1: grinding device 2: housing
21: fixed shaft 3: grinding means
31: abrasive wheel 32: abrasive body
33: press body 34: drive shaft
4: discharge means 41: exhaust pipe
42: vacuum suction impeller 43: connecting hose
5: control means 51: power supply
52: controller 6: power means
61: brushless motor 62: rotation shaft
7: handrail 71: discharge pipe
72: binding body 73: handle
74: handle pipe 75: rotator
76: binder 8: sealing ring
81: sole 9: torque increasing means
91: sun gear 92: ring gear
93: planetary gear PS: abrasive space part
VS: vacuum suction space

Claims (4)

a housing (2) having an open portion facing the surface of the vessel and having a space formed therein; a polishing means (3) provided in the housing (2) and rotatably shaft-coupled to receive rotational force to polish the surface of the vessel during rotation; a discharge means (4) provided in the housing (2) to discharge the dust collected therein to the outside; Power means (6) configured to receive power through the control of the control means (5) for controlling the power of the power supply unit (51) to generate rotational force to supply the rotational force to the grinding means (3); ;
The space portion of the housing 2 is spatially connected to an open portion facing the surface of the ship and is spatially connected to a polishing space (PS) in which the polishing means 3 is disposed, and the polishing space portion and the spatial portion. It communicates with and is spatially connected to the exhaust pipe 41 connected to the outer part of the housing 2 and rotates by receiving the rotational force generated from the power means 6 inside to vacuum the dust remaining in the grinding space. each having a vacuum suction space (VS) in which the vacuum suction impeller 42 to be sucked is disposed;
The power means (6) includes a brushless motor (61) mounted on the outer surface of the housing (2) and configured to generate rotational force by receiving power regulated through the control of the control means (5); Rotating the center of the vacuum suction impeller 42 and the grinding wheel 31 of the grinding means 3 is rotatably coupled to the housing 2 so as to rotate by receiving the rotational force generated by the brushless motor 61 . In the small and lightweight polishing apparatus for ships (1) comprising a rotating shaft (62) each bound to a center line and configured to simultaneously rotate the vacuum suction impeller (42) and the polishing wheel (31) at the time of rotation;
It is provided between the rotating shaft 62 and the driving shaft 34 of the abrasive wheel 31 to decelerate the rotational force generated by the brushless motor 61 and increase the torque to the abrasive wheel 31 . Torque increasing means (9) adapted to maintain a high torque pressure for: Doedoe further comprising;
The torque increasing means (9),
A sun gear 91 that is bearing-coupled to the housing 2 in an idling manner and is coupled to the rotation shaft 62 to receive rotational force to rotate, and the sun gear 91 fixed to the housing 2 A ring gear 92 having gear teeth disposed on an inner circumferential surface having a space therebetween, and disposed between the sun gear 91 and the ring gear 92, the sun gear 91 and the ring gear 92 ) and each gear-coupled to rotate around the sun gear 91 while rotating when the sun gear 91 is rotated, and to be axis-coupled to the drive shaft 34 of the abrasive wheel 31 so as to be idling. A small and lightweight polishing apparatus for ships, characterized in that it includes a plurality of planetary gears (93). The method of claim 1 ;
The grinding means (3),
the abrasive wheel 31 rotatably installed in the abrasive space of the housing 2; an abrasive body 32 detachably attached to the bottom surface of the polishing wheel 31 and configured to polish the surface of the vessel on the bottom surface; A small and lightweight abrasive device for ships, characterized in that it includes; a pressing body (33) for elastically pressing the abrasive body (32) away from the abrasive wheel (31) to the surface of the ship. The method of claim 1 ;
One end is spatially connected through the exhaust pipe 41 and the connecting hose 43, which are pipe-connected to be spatially connected to the vacuum suction space, and the other end is a 'pipe' through which both ends are penetrated so that dust is discharged. A discharge pipe 71 having a shape, one end is bound to the discharge pipe 71 and the other end is rotatably coupled to a part of the housing 2 on a part 72, and the discharge pipe 71 is inside A small and lightweight abrasive device for ships, characterized in that it further comprises; The method of claim 1 ;
At the edge of the opening in the housing (2),
A small and lightweight polishing apparatus for a ship, characterized in that it is provided with a sealing ring (8) in which a plurality of brushes (81) are planted in close contact with the surface of the ship to close the opening of the housing (2) to the outside.

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