KR100655882B1 - Apparatus for controlling position of sea crane with wire - Google Patents

Abstract

An apparatus for controlling a position of a sea crane with a wire is provided to move a large-sized hull block into a dock at a time by moving the sea crane front and back and right and left. In an apparatus for controlling a position of a sea crane(120) with a wire, wire control winches(150~157) are mounted with wire sensors to calculate expansion or extension of the wire by being fixed at the corner of the sea crane. A plurality of guide rollers is installed at the rear side of the wire control winch. Wires(134,136,138,140,142,144,146,148) are extended to the outside of the sea crane through the guide roller by being wound or unwound from the wire control winches. A plurality of fixing points(135,139,143,147) fixes each end of the wires. The fixing points are ground fixing points fixed at the dock.

Description

Apparatus for controlling position of sea crane with wire}

1 is a side view showing a conventional marine crane device.

2 is a plan view showing a first embodiment of a wire position control type marine crane apparatus according to the present invention.

3 is a plan view showing a second embodiment of the wire position control type marine crane apparatus according to the present invention.

4 is a plan view showing a third embodiment of the wire position control type marine crane apparatus according to the present invention.

5 is a cross-sectional view of the wire control winch shown in FIGS. 2 to 4.

6 is a working principle of the wire position control type marine crane apparatus according to the present invention.

<Explanation of symbols for the main parts of the drawings>

102: dock 104, 104 ': PE workshop

106: Goliath Crane 110: Large Hull Block

120: offshore crane 150: wire control winch

The present invention relates to a wire position control type marine crane device, and more particularly, by connecting a plurality of wire control winch mounted on the offshore crane and a plurality of fixed points installed on the ground or on the sea with a plurality of wires to expand or expand them. The present invention relates to a wire position controlled marine crane device that focuses on controlling or moving itself.

In general, the shipbuilding industry, which begins with the order of the ship and is designed, built, and delivered, the business profitability of the process determines the survival and success of the industry.

An important factor in determining profitability is productivity in shipbuilding, and all shipbuilding industries are competing for productivity.

For this reason, the block drying method has emerged. The block drying method is a method of first dividing the hull into dozens or hundreds of blocks, assembling and manufacturing the individual blocks on the ground, and assembling them into a hull sequentially by mounting the produced blocks on the ship's fleet.

In the most suitable factory according to the shape of the block, it is made by the most efficient method, and the finished block is even painted.

As such, the painted blocks are combined by several blocks, and a process of combining several blocks into one is called a pre-rection (hereinafter, referred to as 'PE') operation.

Through this PE operation, several small blocks can be combined to form a large hull block, and can be mounted in a dock using a marine crane.

1 shows a marine crane 10 according to the prior art. As shown in FIG. 1, the marine crane 10 is configured to have a main body 12 of a crane floating on the sea surface and a boom 14 that is coupled to an upper portion thereof and extends forward and upward.

At this time, the wire rope 16 is connected along the boom 14, and the end thereof is equipped with a sackle (18, Shackle) which is a device for fixing the cargo to the wire rope 16.

After the cargo is fixed to the sackle 18, the wire rope 16 is wound around the lower end operation room of the boom 14, and the cargo is lifted. The marine crane 10 is then towed to a position to be moved by a plurality of tugboats and seats the cargo in place.

However, such a conventional marine crane device has no self-moving ability or the ability to change the direction of the sea and must rely on a plurality of tugboat when the direction of movement and boom is required. This results in many difficulties in positioning large hull blocks in place in tight spaces, such as inside the dock.

Thus, there is a need for a marine crane apparatus that can move forward, backward, left and right, and rotationally by itself.

The present invention has been made to overcome the disadvantages of the prior art as described above, by controlling the expansion and extension of the wire connected to the fixed point in the winch, wire position control type marine crane apparatus that can change the position and attitude of the offshore crane To provide.

The technical problem as described above, in the marine crane device, fixed to the corner of the offshore crane and the wire control winch equipped with a wire sensor to measure the stretching or elongation of the wire; A plurality of guide rollers installed in front of the wire control winch; A wire wound or unwound from the wire control winch and extending out of the marine crane via the guide roller; And a plurality of fixing points for fixing the ends of the wires, respectively, wherein the fixing points are ground fixed shafts fixed to the dock.

In another aspect of the present invention, the above technical problem is a marine crane device, the wire control winch is fixed to the corner of the marine crane and equipped with a wire sensor to measure the stretching or elongation of the wire; A plurality of guide rollers installed in front of the wire control winch; A wire wound or unwound from the wire control winch and extending out of the marine crane via the guide roller; And a plurality of fixing points for fixing the ends of the wire, respectively, wherein any one or more of the plurality of fixing points is an offshore fixed shaft installed at the bottom of the sea. do.

At this time, the wire control winch and the drive motor unit mounted in the sealed housing of the wire control winch; A gear box part coupled to receive the driving force of the driving motor part; A reel unit rotated by the driven shaft of the gear box unit; A pair of roller-type encoders disposed in front of the wire wound on the reel portion; A controller configured to transmit / receive the extension or extension length information of the wire with the integrated controller of the marine crane device as an output signal of the encoder; And a wire bush disposed in front of the roller-type encoder, wherein the wire drawn out from the wire bush extends toward the guide roller.

In addition, one end portion of the buckle is coupled to the end of the wire, the other side of the buckle is preferably coupled to the other fixing the other wire member having a fixing ring to the fixed point.

Hereinafter, with reference to the accompanying drawings will be described preferred embodiments of the wire position control type marine crane apparatus according to the present invention.

First embodiment

2 is a plan view showing a first embodiment of a wire position controlled marine crane apparatus according to the present invention.

As shown in FIG. 2, dock 102 is centered, with PE workshops 104 and 104 ′ on both sides.

On both sides of the PE workshop 104, 104 ′, rails 108, 108 ′ are installed side by side with the dock 102, respectively, and the goliath crane 106 is placed on the rails 108, 108 ′. This moves.

The goliath crane 106 has a trolley (not shown, Trolley) that can move back and forth, left and right and up and down in the middle dock 102 and the upper sides of the PE workshop (104, 104 ') on both sides.

For this reason, large blocks may be manufactured using small blocks in the PE workshops 104 and 104 ', and the small blocks manufactured in the PE workshops 104 and 104' are mounted directly on the ship under construction in the dock 102. Sometimes.

When water is introduced into the dock 102, the offshore crane 120 is moved into the dock 102 and positioned.

At this time, the boom 124 coupled to the main body 122 of the offshore crane 120 may be in contact with the PE workshop (104, 104 ') on both sides, the PE workshop (104) on both sides of the offshore crane (120) The large hull blocks manufactured at 104 'can be moved inside the dock.

In this embodiment, the large hull block 110 produced in the PE workshop 104 'on the left side is towed using the boom 124 of the offshore crane 120. Thereafter, in order to seat the large hull block 110 in the dock 102, the marine crane 120 should be capable of moving back and forth, left and right and rotation.

Here, the upper surface of the main body 122 of the offshore crane 120 has a rectangular shape, as shown by the dotted circle A, two wire control winch 150 is mounted at each corner, the marine The crane 120 is equipped with a total of eight wire control winches 150, 151, 152, 153, 154, 155, 156, 157. The first wire control winch 150, the second wire control winch 151, the third wire control winch 152, and the first wire control counterclockwise from the upper right corner of the main body 122 of the marine crane 120. The 4 wire control winch 153, the 5th wire control winch 154, the 6th wire control winch 155, the 7th wire control winch 156, and the 8th wire control winch 157 are attached in order.

And eight wires 136, 134, 138, 140, 144, 142, 146, 148 connected to respective wire control winches 150, 151, 152, 153, 154, 155, 156, and 157, respectively. It is connected to any one of the four ground stationary shafts 135, 139, 143, and 147 fixed to the edge of the upper sidewall of 102.

In this case, the first fixing shaft 135 and the fourth fixing shaft 147 fixed to the edge of the upper right wall of the dock 102 are fixed at regular intervals in the longitudinal direction of the dock. In addition, the second fixing shaft 139 and the third fixing shaft 143 fixed to the upper edge of the left wall of the dock 102 are also fixed at regular intervals in the longitudinal direction of the dock, respectively.

The wire 136 drawn from the first wire control winch 150 is connected to the first fixed shaft 135 of the upper edge of the same side of the dock side wall, and the wire 138 drawn from the second wire control winch 151. Is connected to the second fixed shaft 139 of the upper edge of the opposite dock side wall, the two wires (136, 138) are connected in a "V" shape in the corner portion of the upper right of the body of the offshore crane (120).

Similarly, the third and fourth wire control winches 152, 153 are connected to the first and second fixed shafts 135, 139 by two wires 134, 140.

In the same way opposite to the above, the fifth and sixth wire control winches 154, 155 are connected with the third and fourth fixed shafts 143, 147 and two wires 144, 146, and likewise, The seventh and eighth wire control winches 156 and 157 are connected to the third and fourth fixed shafts 143 and 147 by two wires 142 and 148.

Before referring to the moving or rotating method of the marine crane 120, the wire control winch 150, 151, 152, 153, 154, 155, 156, 157 and the wire 134, 136, 138, 140, 144, 142, 146, and 148 and the fixed shafts 135, 139, 143, and 147 will be described first.

5 is a cross-sectional view of the wire control winch shown in FIGS. 2 to 4.

As shown in FIG. 5, a drive motor unit 160, a gear box unit 164 connected to the drive shaft 162 from the drive motor unit 160, a reel unit 166, and a roller type encoder 168. , An encoder, a wire bush 184, a controller 170, and an integrated controller unit 176, wound around the reel unit 166, past the encoder 168, and the wire bush 184. It has a wire 134 that passes through the outside and is drawn out.

Since the wire control winch 150 is mounted on the top of the main body edge of the offshore crane, the inside and outside of the wire control winch is blocked by the sealed housing 182 in order to prevent the inundation and corrosion caused by sea water.

The wire control winch 150 uses a power crane 172 of the offshore crane and is operated according to a winch operation control signal (hereinafter referred to as a data value) sent from an integrated controller 176 installed in a cockpit (not shown). .

If the wire 134 needs to be pulled out, the integrated controller 176 of the cockpit sends out a data value 178 to pull out the wire 134, and the data value 178 is input to the controller 170. do.

The controller 170 transmits the motor driving power 180 corresponding to the input data value 178 to the driving motor unit 160, thereby operating a motor (not shown). Thereafter, the driving force generated by the rotating motor is transmitted from the gearbox unit 164, and the reel unit 166 connected thereto rotates.

In addition, the wire 134 wound and stored in the reel unit 166 is released by the rotation of the reel unit 166 and is externally connected between the wire bushes 184 located in front of the wire control winch 150. Withdrawn.

At this time, the wire 134 passes between the two rollers while passing between the reel 166 and the wire bush 184, the encoder 168 is coupled to one roller, the wire The unwinding amount or unwinding amount of 134 is continuously fed back.

By way of the feedback, the measurement signal 171 measured by the encoder 168 is again input to the controller 170, the data value 174 processed by the controller 170 is again integrated with the marine crane It is input to the controller unit 176, it is possible to feed back the amount of unwinding or winding amount of the wire to be controlled.

As such, the wire 134 unwound or wound to the outside through the wire control winch 150 passes between a pair of guide rollers 186 located in front of the wire control winch 150 and moves left or right. It can be easily changed the direction of unwinding or winding.

In this manner, the end to be coupled to the fixed shaft (not shown) of the wire 134 to be unwound or wound out through the wire control winch 150 has a circular insertion ring 190.

One end of the buckle 188 that can be quickly detached and coupled to the end of the wire 134 is coupled, the other wire member 189 having a fixing ring is coupled to the other side of the buckle 188, the other wire The insertion ring 190 is coupled to the end of the member 189.

FIG. 6 is a working principle diagram showing the wire position control type marine crane apparatus shown in FIGS. 2 to 4.

As shown in FIG. 6, eight wires 134 connected between the wire control winches 150, 151, 152, 153, 154, 155, 156, and 157 and the fixed shafts 135, 139, 143, and 147. , 136, 138, 140, 144, 142, 146, 148 by controlling the amount of unwinding or winding, the movement or rotation of the offshore crane is possible.

After lifting the large hull block using a boom (not shown), the main body 120 of the offshore crane must be rotated counterclockwise by an angle α to seat the large hull block inside the dock 102.

First, the second wire control winch 151 winds up the connected wire 138 to have a displacement of the wire 138 'in a state after rotation by an angle α.

At the same time, the sixth wire control winch 155 also winds up the connected wire 146 so as to have a displacement of the wire 146 'in a state after the rotation by α angle.

That is, the second wire control winch 151 and the sixth wire control winch 155 positioned on the diagonally wound the connected wires 138 and 146, respectively, to rotate the main body 122 of the marine crane by α angle. .

At this time, the remaining six wire control winch (150, 152, 153, 154, 156, 157) as specified by the integrated controller (not shown) in order to center the marine crane not to be biased in one direction during rotation Unwind the wires 136, 134, 140, 144, 142, and 148 by the respective lengths of the wires, and the wires 136 ', 134', 140 ', 144', 142 ', and 148' in a state after the rotation by α angle. (Hereinafter referred to as 'wire action' to move or rotate the body of a marine crane through the winding or unwinding of the wire between the wire control winch and the fixed point).

For this reason, the main body 122 of the marine crane has a displacement 122 'after the rotation by α angle, thereby allowing the large hull block towed on the boom to be seated inside the dock.

Second embodiment

3 is a plan view showing a second embodiment of the wire position control type marine crane apparatus according to the present invention.

As shown in FIG. 3, the difference from the first embodiment in the second embodiment is that only three of the four fixed points are the ground fixed shafts 139, 143, and 147, and the other one is the fixed point. It is to be a marine fixed shaft 135, or all the fixed points are composed of the maritime fixed shaft 135. At this time, the maritime fixed shaft 135 refers to a pillar on the bottom of the sea.

That is, since the second embodiment shown in FIG. 3 is the same as the description of FIG. 2 except that the column located at sea is one fixed shaft, it will be omitted.

Third embodiment

4 is a plan view showing a third embodiment of the wire position control type marine crane apparatus according to the present invention.

As shown in FIG. 4, the difference from the first embodiment in the third embodiment is that two marine cranes 120 and 121 are combined and positioned inside the dock 102.

The main bodies of the two marine cranes 120 and 121 may be combined by a plurality of coupling holes (not shown) and the coupling pin 220 to double the load. Alternatively, two offshore cranes can be combined only by rope.

However, the two combined offshore cranes 120 and 121 are difficult to rotate due to their size constraints within the dock 102, and can only be moved back and forth. In other embodiments, if there is a larger dock, rotation is also possible.

Therefore, four wire control winches 150, 152, 154, and 156 are mounted at the corners of the main body of the two marine cranes 120 and 121, respectively, and four wires 134, 138, 142, 148 are embedded on four ground stationary shafts 135, 139, 143, and 147. At this time, two ground fixing shafts 135 and 139 of the four ground fixing shafts 135, 139, 143 and 147 are installed in the front of the dock, and the remaining two ground fixing shafts 143 and 147 are in the rear of the dock. It is installed on the side.

As a result, the two marine cranes 120 and 121 coupled to each other lift the super hull block 110 and move back and forth by a wire action, thereby seating the super hull block 110 in the dock 102. You can.

The wire position control type marine crane apparatus by this invention was demonstrated above. Such a technical configuration of the present invention will be understood by those skilled in the art that the present invention can be implemented in other specific forms without changing the technical spirit or essential features of the present invention.

Therefore, the above-described embodiments are to be understood in all respects as illustrative and not restrictive, and the scope of the present invention is indicated by the appended claims rather than the foregoing description, and the meanings of the claims are as follows. And all changes or modifications derived from the scope and equivalent concept thereof should be construed as being included in the scope of the present invention.

As described above, according to the wire position control type marine crane apparatus of the present invention, the marine crane can move back and forth, left and right and rotation by itself, and move the large hull block produced in the PE workshop outside the dock into the dock at once. Since the time required for ship construction can be shortened, productivity is improved.

In addition, according to the wire position control type marine crane apparatus of the present invention, it is possible to move and rotate by connecting to a plurality of marine stationary shafts even in the sea, thereby reducing the number of personnel and expenses required when using a plurality of tugboats, The efficiency is increased.

In addition, according to the wire position control type marine crane apparatus of the present invention, when a plurality of marine cranes are integrated with a plurality of coupling pins, the super large hull lock can be carried by increasing the load.

Claims (4)

In the marine crane device, A wire control winch fixed to a corner of the offshore crane and equipped with a wire sensor to measure the stretch or elongation of the wire; A plurality of guide rollers installed in front of the wire control winch; A wire wound or unwound from the wire control winch and extending out of the marine crane via the guide roller; And A plurality of fixing points for fixing the ends of the wire, respectively The fixed point is a wire position controlled offshore crane device, characterized in that the ground fixed shaft fixed to the dock. In the marine crane device, A wire control winch fixed to a corner of the marine crane and equipped with a wire sensor to measure the stretching or stretching of the wire; A plurality of guide rollers installed in front of the wire control winch; A wire wound or unwound from the wire control winch and extending out of the marine crane via the guide roller; And A plurality of fixing points for fixing the ends of the wire, respectively One or more of the plurality of fixed points is a wire position controlled marine crane device, characterized in that the offshore fixed shaft is installed on the bottom of the sea. The method according to claim 1 or 2, The wire control winch, A drive motor unit mounted inside the hermetic housing of the wire control winch; A gear box part coupled to receive the driving force of the driving motor part; A reel unit rotated by the driven shaft of the gear box unit; A pair of roller-type encoders disposed in front of the wire wound on the reel portion; A controller configured to transmit / receive the extension or extension length information of the wire with the integrated controller of the marine crane device as an output signal of the encoder; And A wire bush disposed in front of the roller-type encoder, The wire position control type marine crane device, characterized in that the wire drawn out from the wire bush is extended to the guide roller side. The method according to claim 1 or 2, One end portion of the buckle is coupled to the end of the wire, the other side of the buckle is connected to another wire member having a fixing ring is coupled to the fixed position of the wire crane, characterized in that the fastening point.

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