KR20140101949A

KR20140101949A - Shaft grounding apparatus of ship

Info

Publication number: KR20140101949A
Application number: KR1020130015199A
Authority: KR
Inventors: 김규창
Original assignee: 현대중공업 주식회사
Priority date: 2013-02-13
Filing date: 2013-02-13
Publication date: 2014-08-21

Abstract

The present invention relates to a shaft grounding apparatus of a ship and, more specifically, to a shaft grounding apparatus of a ship capable of grounding a hull and a shaft to prevent a bearing for supporting the shaft and the like from electrical corrosion due to a spark and the like generated during an operation of a ship engine. The shaft grounding apparatus of a ship according to an embodiment of the present invention includes: a grounding unit grounded to the shaft of an engine; and a variable support member installed on a hull close to the shaft to support the grounding unit and provided to adjust the distance between the shaft and the grounding unit.

Description

[0001] SHAFT GROUNDING APPARATUS OF SHIP [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shaft grounding apparatus for a ship, and more particularly, to a shaft grounding apparatus for a ship that grounds a ship and a shaft to prevent electrical corrosion of bearings, .

Generally, the ship uses the power generated from the engine to rotate the shaft shaft, and rotates the propeller provided at the end of the shaft outside the hull to obtain propulsion.

Such a ship causes the crank in the engine block to rotate as the engine is burned, and the shaft rotates in association with the rotation of the crank. Further, the shaft rotates while being supported by a bearing block or the like having a bearing.

1 and 2, the shaft 10 is divided into a plurality of parts and is provided with a structure in which flanges 15 provided at each end are connected as fastening members 17.

Meanwhile, conventionally, the crank may rub against or collide with the engine block during the rotation, and electricity such as sparks or static electricity may be generated.

Electricity generated during the rotation of the crank can be transmitted to the bearings in the bearing block through the crankshaft 10 and thus electrical corrosion may occur as the crankshaft 10 and bearings are exposed to electricity have.

As described above, electric corrosion occurring in the crankshaft, the shaft 10, and the bearings not only degrades durability but also causes surface corrosion.

Particularly, if electrical corrosion occurs in the bearing, the shaft 10 can not be stably supported, thereby causing the shaft 10 to bend or damage the surface of the shaft 10.

Accordingly, conventionally, a shaft grounding device 20 for grounding the electric power delivered from the shaft 10 to the hull 1 is provided. This grounding device includes a support member 22 provided adjacent to the shaft 10 and a brush 24 that is grounded to the shaft 10.

Here, the brush 24 is kept in contact with the shaft 10 while being elastically supported by the arm 26 provided on the support member 22. [ The brush 24 may be grounded on the bottom surface of the hull 1 via a wire 24a.

On the other hand, the shaft 10 provided to the ship may be warped due to use for a long period of time, corrosion may occur on the surface thereof, and regular inspection is carried out according to durability and the like.

The coupling member 17 fastened to the flange 15 of the shaft 10 is unfastened and the shaft 10 is moved sequentially in the axial direction to unseat the shaft 10 10).

At this time, the flange 15 of the shaft 10 is provided to be larger than the diameter of the shaft 10, so that the flange 15 is supported by the support member (not shown) of the shaft grounding apparatus 20 22). Therefore, conventionally, the work is performed in a state in which the support member 22 of the foot release shaft grounding device 20 of the shaft 10 is removed in advance.

On the other hand, the tested shaft 10 is mounted on the hull 1, and the support member 22 of the shaft grounding device 20 is installed on the hull 1 again so that the brush 24 is supported on the shaft 10 And grounded.

As described above, in the related art, it is necessary to remove the support member 22 of the foot-releasing shaft grounding device 20 of the shaft 10, and the troublesome process of reinstalling the support member 22 after the shaft 10 is installed Is repeated. In addition, when the position of the support member 22 can not be accurately set, the brush 24 may not be brought into contact with the shaft 10 after the shaft 10 is installed. Accordingly, the support member 22 ) May be necessary to reinstall the server.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a shaft grounding apparatus for a ship in which a supporting member, which is supported by a brush and is grounded to a shaft, is improved in structure so as not to interfere with a foot launching flange of the shaft.

A shaft grounding apparatus of a ship according to an embodiment of the present invention includes: a grounding unit that is grounded to a shaft of an engine; And a variable support member provided on the hull adjacent to the shaft to support the grounding unit and to adjust a distance between the shaft and the shaft.

In the shaft grounding apparatus of a ship according to an embodiment of the present invention, the variable type support member includes a first support installed on the hull and a second support rotatably coupled to the first support via a rotation connecting member can do.

In the shaft grounding apparatus of a ship according to an embodiment of the present invention, the variable type support member may include a first support installed on the hull and a second support height-adjustably coupled to the first support.

In the shaft grounding apparatus for a ship according to an embodiment of the present invention, the variable type support member may include a height adjusting portion interposed between the first and second supports to fix the coupling position.

In a shaft grounding apparatus of a ship according to an embodiment of the present invention, the grounding unit is provided with a brush that is in electrical contact with the shaft, an arm extending from the shaft to support the brush, and a shaft provided between the arm and the shaft And an elastic portion for elastically rotating the arm in a shaft direction so that the brush is elastically grounded on the shaft.

According to the present invention, it is possible to prevent the shaft from interfering with the foot release support member, thereby facilitating the shaft release operation and eliminating the need to reinstall the support member, thereby shortening the operation time.

1 is a perspective view showing a state where a shaft grounding device of a ship according to the related art is grounded on a shaft.
Fig. 2 is a front view showing a state in which a shaft grounding device of a ship according to the related art is grounded to a shaft; Fig.
3 is a view showing a part of a ship provided with a shaft grounding device according to an embodiment of the present invention;
4 is a perspective view showing a state in which a shaft grounding device of a ship according to an embodiment of the present invention is grounded on a shaft.
FIG. 5 is a front view showing a state in which a shaft grounding device of a ship according to an embodiment of the present invention is grounded to a shaft. FIG.
FIG. 6 is a perspective view illustrating a state in which a shaft is released in a state where a shaft grounding device of a ship according to an embodiment of the present invention is grounded to a shaft. FIG.
FIG. 7 is a front view showing a state in which a shaft is released in a state in which a shaft grounding device of a ship is grounded in accordance with an embodiment of the present invention. FIG.
8 is a perspective view showing a state in which a shaft grounding device of a ship according to another embodiment of the present invention is grounded to a shaft.
FIG. 9 is a front view showing a state in which a shaft grounding device of a ship according to another embodiment of the present invention is grounded on a shaft. FIG.
10 is a perspective view showing a state in which a shaft is taken out from a shaft in a state where the shaft grounding device of a ship according to an embodiment of the present invention is grounded.
FIG. 11 is a front view showing a state in which a shaft is taken out in a state in which a shaft grounding device of a ship is grounded in accordance with an embodiment of the present invention. FIG.

Hereinafter, specific embodiments of the present invention will be described in detail with reference to the drawings. It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the inventive concept. Other embodiments falling within the scope of the inventive concept may readily be suggested, but are also considered to be within the scope of the present invention.

In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

The same or similar components appearing in the drawings of the respective embodiments within the same or similar concept will be described using the same or similar reference numerals.

FIG. 3 is a view illustrating a part of a ship provided with a shaft grounding apparatus according to an embodiment of the present invention. FIG. 4 is a diagram illustrating a state in which a shaft grounding apparatus of a ship according to an embodiment of the present invention is grounded FIG. 5 is a front view showing a state in which a shaft grounding device of a ship according to an embodiment of the present invention is grounded to a shaft. FIG. 6 is a perspective view illustrating a state in which the shaft is released from the shaft in a state where the shaft grounding device of the ship is grounded according to an embodiment of the present invention, and FIG. 7 is a perspective view of a ship according to an embodiment of the present invention. Fig. 3 is a front view showing a state in which the shaft is released when the shaft grounding device is grounded to the shaft; Fig.

3 to 7, a shaft grounding apparatus 120 of a ship 100 according to an embodiment of the present invention includes a shaft 110 of an engine 104 that generates propulsive force for propelling the ship 100, And electricity generated by friction or impact of a crank or the like in the block of the engine 104 during the operation of the engine 104 can be grounded by the hull 102. [

That is, the engine 104 of the ship 100 burns the combustion to obtain propulsive force to rotate the crank in the engine block, and as the shaft 110 connected to the crank rotates, The propeller 106 is rotated to obtain the rotational force.

At this time, the shaft 110 can be rotatably supported without friction by a bearing block 112 having a bearing inside.

In addition, the shaft 110 is divided into a plurality of parts, and the flanges 115 provided at the respective distal ends can be integrally provided as fastened by the fastening members 117.

The shaft 110 may be warped due to use for a long period of time, or surface corrosion may occur. The shaft 110 may be periodically inspected according to the durability of the shaft 110. The shaft 110 may be removed from the ship 102 for this purpose. At this time, the shaft 110 dismantles the fastening member for fastening the flange 115, and the shaft 110 is removed from the hull 102 in a state where the bearing block 112 supporting the shafts 110 is dismantled .

On the other hand, a shaft grounding device 120 may be provided on the shaft 110 to prevent electric erosion caused by electricity generated by the operation of the engine 104 or the like.

The shaft grounding apparatus 120 includes a grounding unit 130 that is grounded to the shaft 110 of the engine 104. The grounding unit 130 is connected to the shaft 110 via a variable- Can be supported by the member (140). Here, the variable support member 140 may be provided so as to be able to adjust the distance from the shaft 110.

To this end, the variable support member 140 may include a first support 142 disposed on one side of the hull 102 adjacent to the shaft 110. Also, a second support 144, on which the grounding unit 130 is installed, may be provided on the first support 142.

In this embodiment, the first support 142 or the second support 144 may be provided in the form of an angle.

The first support 142 and the second support 144 may be rotatably coupled to the first support 142 and the second support 144 via the rotation connecting member 146.

That is, the first support 142 is fixed to the hull 102 and the second support 144 is fixed to the first support 142 by a rotation connecting member 146, for example a hinge or a hinge 146 And can be rotatably coupled. The rotation connecting member 146 may be coupled by a fastening member such as a bolt, or may be joined by welding or the like.

Therefore, in this embodiment, when the shaft 110 is extracted from the hull 102 to inspect the shaft 110, the second support 144 is rotated from the first support 142 in a bent state, The foot releasing flange 115 and the like of the shaft 110 can be released without interfering with the first support 142 and the second support 144 or the variable support member 140.

On the other hand, the variable-type support member 140 is fixed to the other side where the rotation coupling member 146 is not installed so that the grounding unit 130 can be maintained in a fixed state when the grounding unit 130 is grounded to the shaft 110 A connecting member 148 may be provided. For example, the fixed connection member 148 may be provided with a plate 148 or the like, and may be coupled to the first and second supports 142 and 144 by a fastening member 149, It can be fixed so as not to rotate with respect to the first support 142.

This fixed connection member 148 can be separated from the first support 142 and the second support 144 as needed so that the second support 144 can rotate relative to the first support 142 Can be maintained.

Also, in this embodiment, the grounding unit 130 may include a brush 132 that is in electrical contact with the shaft 110. In addition, the brush 132 may be supported by an arm 134 extending from the shaft 110. The brush 132 may be grounded to the bottom surface of the hull 102 via a wire 132a.

Here, the arm 134 can be fixedly installed with respect to the shaft 110.

For example, in this embodiment, the grounding unit 130 may include a brush 132 that is in electrical contact with the shaft 110. In addition, the brush 132 may be supported by an arm 134 extending from the shaft 110.

Here, the arm 134 may be rotatably installed with respect to the shaft 110.

Between the arm 134 and the shaft 110, an elastic portion for elastically rotating the arm 134 in the direction of the shaft 110 may be provided. This resilient portion may include a spring 136 and may be provided to urge the arm 134 to rotate in a direction toward the shaft 110. [

Although the variable support first support 142 or the second support 144 is provided in the form of an angle in the present embodiment, the shape of the first support 142 or the second support 144 is not limited, It is of course also possible to provide a plate or a circular or square pipe.

In the present embodiment, the variable support member 140 has a variable distance from the shaft 110 by rotating the first supporter 142 and the second supporter 144. However, It is not limited by the example, and can be variously modified.

FIG. 8 is a perspective view showing a state where a shaft grounding apparatus of a ship according to another embodiment of the present invention is grounded to a shaft, FIG. 9 is a view illustrating a state where a shaft grounding apparatus of a ship according to another embodiment of the present invention is grounded Fig. 10 is a perspective view illustrating a state in which a shaft is taken out in a state in which a shaft grounding device of a ship is grounded in accordance with an embodiment of the present invention. FIG. 11 is a perspective view of a ship according to an embodiment of the present invention. Fig. 3 is a front view showing a state in which the shaft is released when the shaft grounding device is grounded to the shaft; Fig.

8 to 11, in the shaft grounding apparatus 220 of the ship 100 according to another embodiment of the present invention, the variable support member 240 includes a first support 242 installed on the ship 102 . Further, the first support 242 may be provided with a second support 244 so as to be movable up and down.

That is, in this embodiment, the variable support member 240 can adjust the distance that the second support 244 is lifted in the height direction of the first support 242 and spaced apart from the shaft 110.

To this end, the first support 242 may be provided in the form of an angle.

Further, the second support 244 may be coupled to the inside or outside of the first support 242.

The variable support member 240 can control the overall height by adjusting the height at which the second support 244 is coupled to the first support 242.

In addition, the grounding unit 230 may include a brush 232 that is in electrical contact with the shaft 110. In addition, the brush 232 may be supported by an arm 234 extending from the shaft 110. Here, the arm 234 can be installed to be rotatable with respect to the shaft 110.

On the other hand, in the present embodiment, it is preferable that the arm 234 rotates upward outward when the variable height is lowered.

That is, when the second supporter 244 is inserted into the first support 242 and descends during the process of the shaft 110 being extracted from the hull 102, the arm 234 is supported by the shaft (not shown) 110 in the direction away from it.

The fixing position of the first support 242 and the second support 244 is fixed between the first support 242 and the second support 244 in order to fix the length, A height adjusting portion may be provided.

The variable support member 240 is positioned at a position where the second support 244 is lifted relative to the first support 242 so that the brush 132 is grounded to the shaft 110, The second support 244 may be provided with a slot hole 247 penetrating long in the longitudinal direction corresponding to the position when the second support 244 is lowered relative to the first support 242 for the release of the second support 244 .

At least one through hole may be formed in the first support 242.

Therefore, in this embodiment, after the fastening member such as the bolt 246 is inserted into the through hole of the first support 242, the variable support member 240 is inserted into the slot hole 247 of the second support 244 The installation height can be adjusted according to the position where it is fastened.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, Those skilled in the art will appreciate that various modifications and changes may be made thereto without departing from the scope of the present invention.

Therefore, the spirit of the present invention should not be construed as being limited to the above-described embodiments, and all of the equivalents or equivalents of the claims, as well as the following claims, I will say.

100: Ship 102: Hull
104: engine 106: propeller
110: shaft 112: bearing block
115: Flange 120: Shaft grounding device
130: Grounding unit 132: Brush
134: arm 136: spring
140: Variable-type support member 142: First support
144: second support 146: rotation connecting member (hinge)
148: Fixed connecting member

Claims

A grounding unit connected to the shaft of the engine; And
A variable support member provided on a hull adjacent to the shaft to support the grounding unit and to adjust a distance from the shaft;
And the shafts are grounded.

The image forming apparatus according to claim 1, wherein the variable-
A first support installed on the hull,
And a second support rotatably coupled to the first support via a rotation connecting member.

The image forming apparatus according to claim 1, wherein the variable-
A first support installed on the hull,
And a second support height-adjustably coupled to the first support.

4. The apparatus according to claim 3, wherein the variable-
And a height adjuster interposed between the first support and the second support to fix the coupling position.

5. The apparatus according to any one of claims 1 to 4, wherein the grounding unit
A brush electrically contacting the shaft,
An arm extending from the shaft to support the brush,
And an elastic portion provided between the arm and the shaft to elastically rotate the arm in a shaft direction so as to elastically ground the brush on the shaft.