KR20230045350A - Wave height change measuring appratus - Google Patents

Abstract

In the present invention, provided is a wave height change measurement apparatus capable of measuring a height change of the sea surface caused by waves. The wave height change measurement apparatus includes: a floating body floating on the sea surface; a wire connected to the floating body; a winch unit winding or unwinding the wire such that the floating body can ascend and descend; a body unit in which the winch unit is provided, and a guide unit extended in a longitudinal direction is provided, and which is installed in a vessel body; a block to which the wire is connected, which is moved along the guide unit in interoperation with the movement of the floating body, and formed with a small load in preparation for the floating body; and a microcomputer unit provided in the block, and measuring a travel distance of the block, thereby calculating a height change of the sea surface caused by waves based on the position of the body unit.

Description

Wave height change measuring device {Wave height change measuring appratus}

The present invention relates to a wave height change measuring device.

In general, a plurality of davit devices are installed on the outer edge of the deck of a ship to support a fender filled with compressed air, and then to a fender that serves as a buffer against a collision with a rock wall or other ship when contacting a rock wall or another ship. It can be driven down.

In this case, a hydraulic supply device for providing hydraulic energy may be integrally connected to the davit device. In general, the hydraulic supply device may operate a hydraulic pump through an electric motor to provide power to the davit device.

For example, the davit device may operate the winch unit around which the wire is wound by using hydraulic energy supplied from the hydraulic supply device as power, and through this, the fender connected to the wire may be raised and lowered.

On the other hand, in order to work in a state where a ship is adjacent to another ship or a rock wall, such as loading or unloading, an accident can be prevented when the sea level does not change rapidly. However, it may be difficult to prevent accidents due to rapid sea level because it is difficult to grasp the change in the height of waves (waves) generated around a ship using only weather information. In order to prevent accidents caused by rapid changes in sea level caused by waves, it is necessary to develop a wave height change measuring device.

The problem to be solved by the present invention is to provide a wave height change measuring device capable of measuring the change in height of the sea surface due to waves.

The tasks of the present invention are not limited to the tasks mentioned above, and other tasks not mentioned will be clearly understood by those skilled in the art from the following description.

One aspect of the wave height change measuring device of the present invention for achieving the above object is a floating body floating on the sea surface, a wire connected to the floating body, and a winch that winds or unwinds the wire so that the floating body rises and falls. A part, the winch part is provided, a guide part extending in the vertical direction is provided, a body part installed on the hull, the wire is connected, moves along the guide part in conjunction with the movement of the floating body, and the floating body In contrast, a block having a small load, and a micom unit provided on the block, measuring a moving distance of the block, and calculating a change in height of the sea level changed by waves based on the position of the body part.

When the sea level is lowered compared to the reference value constituting the initial value of sea level, the floating body is moved downward along the sea level by its own weight, the block is pulled by the floating body and moved upward, and the sea level is raised in preparation for the reference value. When is raised, the floating body may be moved upward along the water level of the sea level so as to float on the sea level, and the block may be moved downward to maintain the tension of the wire generated between the block and the floating body.

The body portion includes an extension member whose upper end is bent in a direction facing the sea level, and one or more main pulleys provided on the extension member, and the wire is provided between the floating body and the block via the main pulley can

The guide unit includes a rack gear, the block includes a pinion gear engaged with the rack gear, and the microcomputer unit includes an encoder for measuring the number of rotations of the pinion gear, and the number of rotations of the pinion gear can be calculated as the movement distance of the block.

The microcom unit may set the height change of the sea level as a danger range and generate an alarm if the calculated height change value is equal to or greater than a preset value.

Details of other embodiments are included in the detailed description and drawings.

The wave height change measuring device according to the present invention can measure the height change of the sea level due to waves in real time in a ship, and can prevent accidents caused by rapid changes in sea level caused by waves.

1 is a diagram showing a wave height change measuring device according to an embodiment of the present invention.
FIG. 2 is a view showing A of FIG. 1 .
FIG. 3 is a view showing a state in which the floating body and the block of FIG. 1 are positioned at reference values.
FIG. 4 is a view showing a state in which the sea level is lowered from the reference value of FIG. 3 .
FIG. 5 is a view showing a state in which the sea level is raised from the reference value of FIG. 3 .

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Advantages and features of the present invention, and methods for achieving them, will become clear with reference to the embodiments described below in detail in conjunction with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below and may be implemented in various different forms, only the present embodiments make the disclosure of the present invention complete, and the common knowledge in the art to which the present invention belongs It is provided to fully inform the holder of the scope of the invention, and the present invention is only defined by the scope of the claims. Like reference numbers designate like elements throughout the specification.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the description with reference to the accompanying drawings, the same or corresponding components regardless of reference numerals are given the same reference numerals, Description is omitted.

1 is a view showing a wave height change measuring device according to an embodiment of the present invention, FIG. 2 is a view showing A in FIG. In addition, FIG. 3 is a view showing a state in which the floating body and block of FIG. 1 are positioned at the reference value, FIG. 4 is a view showing a state in which the sea level is lowered from the reference value in FIG. 3, and FIG. 5 is the reference value in FIG. It is a diagram showing the state in which the sea level has risen in

1 to 5, the wave height change measuring device 100 according to an embodiment of the present invention includes a floating body 110, a wire 120, a winch 130, a body 140, a block 150 and a microcomputer unit 160.

For example, the wave height change measuring device 100 can utilize a general fender and davit device without the need to additionally manufacture a separate device for cost reduction. Hereinafter, the floating body 110 is made of a fender, The wire 120, the winch 130 and the body 140 will be described as forming a davit device.

However, this is only one embodiment and is not limited thereto, and may be provided separately from the general fender and davit device. Alternatively, various modifications are possible as various devices including a wire and a winch may be utilized separately from the davit device.

First, the floating body 110 may be floated on the sea surface and may be formed of a fender.

The fender constituting the floating body 110 may form a fender that protects the object by mitigating the impact caused by collision by being positioned between two objects such as ships. In addition, the fender may be provided in a state of floating on the sea surface by the operation of the davit device, or may be provided in a state of being placed on the hull (settled and stored in a cradle).

For example, the floating body 110 may have a size and weight corresponding to a ship made of a large structure, so that the load of the floating body 110 may be made in ton units (eg, 1 ton or more). However, when the floating body 110 is made of a structure that floats on the sea level and is lowered to the sea level by a davit device, the load of the floating body 110 is supported on the sea level and can be maintained in a floating state. And, as will be described later, briefly mentioned, the floating body 110 has a large weight compared to the block 150, and can pull the block 150 according to the change in the height of the sea level.

And, as mentioned above, the davit device that lifts the floating body 110 or lowers it to the sea level may include the wire 120, the winch unit 130, and the body unit 140. A detailed description of the mechanism for lifting and lowering the fender of the davit device will be omitted in lieu of the known technology, and will be mainly described on points that are different from those of the prior art.

The wire 120 is configured to connect the floating body 110 , and one end may be connected to the floating body 110 and the other end may be connected to the winch unit 130 . The wire 120 may be provided between the floating body 110 and the block 150 via a main pulley 142 to be described later, while being guided on a moving path of the wire 120 by the main pulley 142. The winch unit 130 may be wound or unwound.

For example, the wire 120 may support a block 150 to be described later by being wound around three main pulleys 142 and two auxiliary pulleys 151, as shown in FIG. 1, at which time the auxiliary pulley 151 ) can form a shape capable of lifting the block 150 upward. In addition, a state in which the wire 120 is not loosened between the floating body 110 and the block 150 by the load of the floating body 110 and the block 150 can continue.

This is because the floating body 110 has a higher load than the block 150, and when the floating body 110 is lowered along the sea level, the block 150 is pulled and the wire 120 is tensioned. Alternatively, when the sea level rises and the floating body 110 rises, the wire 120 between the block 150 and the floating body 110 may be temporarily loosened, but the block 150 is lowered by the load of the block 150. This is because the wire 120 between the floating body 110 and the block 150 is in a tense state. In this way, the wire 120 can be continuously maintained in a tensioned state between the floating body 110 and the block 150 .

The winch unit 130 is configured to adjust the length of the wire 120 so that the floating body 110 can be lowered to the sea level or stored in the hull 110, and the wire 120 can be moved up and down. 120) can be wound or unwound. Illustratively, the winch unit 130, although not shown in the drawings, is provided with a winch drum and a drive unit (which may be a motor capable of forward and reverse rotation), and the winch drum is rotated by the rotational force of the drive unit, and the wire 120 can be wound or unwound. In addition, if the position of the winch unit 130 is not particularly limited, for example, it may be provided adjacent to the body unit 140, and may be provided below the body unit 140.

The body portion 140 may be provided with a winch portion 130 and may be installed on the deck of the hull 110. In addition, the body portion 140 may include an extension member 141, a main pulley 142, and a guide portion 143.

The extension member 141 may form an upper end of the body portion 140, and for example, may form a structure in which the upper end portion of the body portion 140 is bent in a direction facing the sea level. That is, the extension member 141 forms a structure bent outward from the hull 110, and the main pulley 142 supporting the wire 120 may be provided in this structure. Accordingly, the wire 120 can be prevented from contacting the hull 110, and damage to the wire 120 due to friction between the hull 110 and the wire 120 can be prevented.

The main pulley 142, as a configuration for supporting the wire 120, may be provided on the extension member 141. In particular, since the main pulley 142 may be provided between the floating body 110 and the block 150 on the path of the wire 120, the position of the wire 120 when the floating body 110 and the block 150 move. can be maintained, and twisting of the wire 120 can be prevented. In addition, since the main pulley 142 can guide the wire 120 when the wire 120 is wound or unwound by the winch unit 130, the wire 120 can move smoothly.

The number and size of the main pulleys 142 may be set according to the block 150 and the extension member 141 . For example, referring to FIG. 1 , three main pulleys 142 may be provided in an extension member 141, and a wire 120 may be wound around each main pulley 142.

The guide part 143 may guide the movement of the block 150 and may extend in the vertical direction. For example, the guide part 143 may include a rack gear meshed with the pinion gear 152 of the block 150 (see FIG. 2 ).

The block 150 has a variable height according to the movement of the floating body 110 according to the change in the height of the sea level, and may move along the guide part 143 in conjunction with the movement of the floating body 110 . In the block 150, the wire 120 may be connected to interlock with the floating body 110, the load may be small compared to the floating body 110, and the auxiliary pulley 151 and the pinion gear 152 are can be provided.

One or more auxiliary pulleys 151 may be provided in the block 150 between one or more main pulleys 142 . At this time, the wire 120 may be provided while passing through the secondary pulley 151 and the main pulley 142 in turn, and the main pulley 142 and the secondary pulley 151 may guide the wire 120 while rotating independently. can

For example, the secondary pulley 151 may be provided with two, as shown in FIG. 1, so that the block 150 is lifted upward by the wire 120 passing through the three main pulleys 142, or can be put down

Referring to FIG. 2 , the pinion gear 152 may engage with rack gear teeth of the guide part 143 and may move along the guide part 143 . At this time, the pinion gear 152 is engaged with the rack gear teeth of the guide unit 143 and rotates to achieve vertical movement. This pinion gear 152 may be an object for measuring the number of rotations of an encoder 161 described below.

The microcomputer unit 160 may be provided in the block 150, measure the moving distance of the block 150, and calculate the height change of the sea level changed by the wave based on the position of the body unit 140. It may include, for example, an encoder 161.

The encoder 161 may be provided in the block 150, measure the moving distance of the block 150, and may be a rotary encoder, but various other encoders may be applied.

Illustratively, the encoder 161 may measure the rotational speed of the pinion gear 152 and calculate the rotational speed of the pinion gear 152 as the moving distance of the block 150 . For example, a value obtained by multiplying the number of revolutions of the pinion gear 152 by the circumference of the pinion gear 152 may be the moving distance of the block 150 . For example, when the pinion gear 152 rotates once, the circumferential length of the pinion gear 152 may correspond to the moving distance of the block 150 . Also, when the pinion gear 152 rotates twice, the length obtained by multiplying the circumference of the pinion gear 152 by 2 may correspond to the moving distance of the block 150.

In this way, the microcomputer unit 160 may calculate the moving distance of the block 150 from the number of revolutions measured by the encoder 161 . In addition, since the movement distance of the block 150 is generated by the movement of the block 150 in association with the change in height of the floating body 110 according to the change in the sea level, it may be the change in height of the sea level due to waves.

And, if the value of the height change calculated by the change in the moving distance of the block 150 is greater than or equal to a preset value, the microcomputer unit 160 may set the change in the height of the sea level as a danger range and generate an alarm. When an alarm occurs, a worker can prevent a maritime accident in advance by temporarily stopping operations such as loading and unloading.

Here, the preset value is a change in the height of the sea level that can cause danger in operations such as loading and/or unloading. It can be.

And referring to FIG. 3 ('BL' may be a reference value of sea level, and the position of the block 150 may be located at 'BL' at the reference value of sea level), the initial value of sea level (setting to measure the change in height) value) (indicated by 'BL' when referring to FIGS. 3 to 5). It can be positioned according to the value BL.

Also, as shown in FIG. 4 , when the sea level is lowered compared to the reference value forming the initial value BL, the floating body 110 may be moved downward along the water level of the sea level by its own weight. At this time, the block 150 is pulled by the floating body 110 and moved upward, and may be positioned at a height 'H1' higher than the reference value. In this way, the changed height 'H1' compared to the reference value may correspond to the height of the floating body 110 lowered by the load along the sea level, so that the change in the height of the wave can be calculated as the change in the height of the block 150 .

In addition, as shown in FIG. 5 , when the sea level rises compared to the reference value, the floating body 110 may be moved upward along the water level of the sea level so as to float on the sea level. In addition, the block 150 can be moved downward to maintain the tension of the wire 120 generated between it and the floating body 110, so that the height change of the block 150 is 'H2' compared to the reference value. can be located in

In this way, when the height of the floating body 110 floating on the sea level is changed according to the change in the height of the sea level due to the wave, the height of the block 150 can be varied in conjunction with the floating body 110, Height changes can be measured from the vessel.

And 153 (refer to FIG. 2) which is not explained is the guide roller 153. The guide roller 153 may support the block 150 to be slidably moved, and may be provided in contact with the guide part 143 . And the guide roller 153 may be provided on the opposite side of the pinion gear 152 in the guide part 143 . Accordingly, the block 150 may move up and down while being guided by the guide roller 153 and the pinion gear 152 with the guide part 143 interposed therebetween.

In addition, the wire 120 may have the same length between the floating body 110 and the block 150 regardless of the change in the height of the sea level, which is not shown in the drawing, but the wire at the position of the block 150 ( 120) may be made by a fixing device such as a clamp for fixing, but is not limited thereto. In addition, the length of winding or unwinding of the wire 120 may vary between the block 150 and the winch unit 130, but is not limited thereto.

On the other hand, in this embodiment, it has been described that the microcomputer unit 160 is provided with an encoder 161 to measure the height change of the block 150 according to the number of revolutions of the pinion gear 152 measured by the encoder 161.

As another example, the microcomputer unit 160 may include a sensor (not shown) installed in the block 150 . The sensor may include a distance measuring sensor that measures the separation distance between the hull 10 (which may be an upper deck) and the block 150 . Accordingly, the block 150 may be pulled by the floating body 110 and moved upward, or the block 150 may measure the distance separated from the hull 10, which changes while moving downward.

At this time, since the sensor does not need to measure the number of revolutions, the pinion gear 152 of the block 150 can be omitted, and the guide part 143 can omit the pinion gear 152 meshing rack gear. As such, various modifications are possible.

As described above, the wave height change measuring device 100 according to the present embodiment can measure the height change of the sea level caused by waves in real time on a ship, thereby preventing accidents caused by rapid changes in sea level caused by waves. can

Although the embodiments of the present invention have been described with reference to the above and accompanying drawings, those skilled in the art to which the present invention pertains can implement the present invention in other specific forms without changing the technical spirit or essential features. You will understand that there is Therefore, the embodiments described above should be understood as illustrative in all respects and not limiting.

100: wave height change measuring device 110: floating body
120: wire 130: winch unit
140: body part

Claims (5)

a floating body floating on the sea level;
a wire connected to the floating body;
a winch unit for winding or unwinding the wire so that the floating body moves up and down;
The winch portion is provided, a guide portion extending in the vertical direction is provided, and a body portion installed on the hull;
a block to which the wire is connected, moved along the guide part in conjunction with the movement of the floating body, and having a small load compared to the floating body; and
It is provided on the block and includes a micom unit for measuring the moving distance of the block and calculating a change in the height of the sea level changed by waves based on the position of the body. According to claim 1,
When the sea level is lowered compared to the reference value constituting the initial value of sea level, the floating body is moved downward along the sea level by its own weight, and the block is pulled by the floating body and moved upward,
When the sea level rises compared to the reference value, the floating body is moved upward along the sea level so that it floats on the sea level, and the block moves downward to maintain the tension of the wire generated between the floating body , wave height change measuring device. According to claim 1,
The body portion includes an extension member whose upper end is bent in a direction facing the sea level, and one or more main pulleys provided on the extension member,
The wire is provided between the floating body and the block via the main pulley, wave height change measuring device. According to claim 1,
The guide part includes a rack gear,
The block includes a pinion gear meshed with the rack gear,
The microcomputer unit includes an encoder for measuring the number of revolutions of the pinion gear, and calculates the number of revolutions of the pinion gear as a moving distance of the block, wave height change measuring device. According to claim 1,
The microcomputer unit sets the height change of the sea level to the danger range and generates an alarm when the calculated height change value is greater than or equal to the preset value.

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