KR102079809B1 - Rock crushing ship for submarine cable installation and method using it - Google Patents

Abstract

The present invention relates to a rock-crushing ship for seabed cable installation and an installation method using the same and, more specifically, to a rock-crushing ship for crushing underwater rock by a free-falling rock-crushing rod which allows a crane of a gantry structure using a transport space unit and a crane rail formed on a hull to be capable of forward and backward transport to lift the rock crushing rod to easily and stably crush underwater rock deep in water. The rock crushing ship comprises: a pair of crane rails (1b) formed on a hull (1) in a longitudinal direction; a crane (2) of a gantry structure capable of forward and backward transport by the crane rails (1b); a rock crushing rod (10) lifted by a wire (2c) wound on the crane (2) to strike and crush underwater rock (R) while free falling; and a transport space unit (1a) formed on the hull (1) between the pair of crane rails (1b) to prevent the rock crushing rod (10) or the wire (2c) from interfering with the hull (1) when the crane (2) moves into the hull (1). The crane of a gantry structure is constructed to lift a heavier rock crushing rod than a crawler crane or the like to offset underwater resistance when the rock crushing rod falls to greatly increase crushing power to complete work in a short period of time. More wire can be wound as spatial limitations for winding wire on the crane are reduced. Therefore, deployment into deep water is possible to widen work areas.

Description

Rock crushing ship for submarine cable installation and method using it}

The present invention is a submarine cable installation chain arm dedicated line and installation method using the same, in more detail, in the chain arm dedicated line crushing underwater rock with freely falling chain rock rod, using a transport space formed on the hull and the crane rail forward and backward transport The gantry structure of this possible gantry structure relates to a submarine cable installation chain rock dedicated line and an installation method using the same to lift the chain rock rods so that it can be easily and stably crushed deep rock.

When installing the submarine cable on the seabed, there are various methods for breaking the seabed rock, but the method using the chain rock rod for the workability and shortening of the air while minimizing the surrounding damage due to the crushing impact is widely used.

However, in order to strike the chain rock bar precisely at the target, the chain rock line should be operated as close as possible to the target point as precisely as possible. There was a problem that the work achievement is lowered over time, and the fuel cost is increased.

As described in Korean Patent Publication No. 10-2005-0065476, the first step of positioning the perforation line on the surface of the underwater rock to be broken, and determining the inclined perforation position by the positioning method using GPS, 45 ~ 80 A second step of drilling a plurality of inclined holes in the underwater rock at an angle of degrees, a third step of moving the chain rock line to a pre-worked working position by a position surveying method using GPS, and an inclined hole drilling a chain rock rod installed in the chain rock line It consists of a fourth step of crushing the underwater rock by dropping it to the underwater rock, and drills a plurality of inclined holes inclined at a predetermined angle to the underwater rock, and freely drop the chain rock rod on the upper portion of the perforated portion of the bottom of the inclined hole Techniques for breaking underwater rocks by easily causing cracks have been published.

In addition, as in the other prior art registration No. 10-1918048, moving the upper part of the barge, but using an excavation rod to move the excavation device to the construction of the excavation hole in the rock, and to move the upper part of the barge, but using the striking rod Crushing device for crushing by hitting the free surface of the ball, the main body is formed so as to move in accordance with the construction position of the excavation hole in the upper part of the barge, and seated on the rock at the construction position in the middle or one side of the main body to the inside Underwater rock crushing equipment for high-quality construction, including the induction casing to be formed to inject and draw the excavating rod and the first step of mounting the induction casing on the rock of the construction site to support it so as not to shake due to the current The excavation rod of the induction casing in the state of penetration into the surface of the rock according to the design depth The technology includes a second step of construction and a third step of crushing the rock by striking the free surface positioned between the excavation hole and the excavation hole by using the striking rod of the crushing device.

However, the prior arts are techniques for crushing rock using the transfer force generated during free fall of the chain rock rod, but the structural characteristics of the crane that cannot be precisely operated and the timing of the free fall at the correct point when the chain rock rod is shaken by strong winds. The accuracy of the blow was lowered, and the free fall direction was changed by being swept away by the algae in the water, which caused a lot of time to crush the rock due to the lowering of the blow precision and the impact force.

KR 20-0207044 Y1 (2000.12.15.) KR 20-0434349 Y1 (2006.12.20.)

In the present invention, to solve the above-mentioned problems of the prior art, a new technology was devised, and in a chain arm dedicated line for crushing underwater rock with a freely falling chain arm rod, the front and rear conveyance is carried out using a transfer space portion and a crane rail formed on the hull. The present invention relates to a chain rock dedicated line for submarine cable and an installation method using the same, in which a crane of a gantry structure can lift a chain rock rod to easily and stably crush an underwater rock of deep depth.

In addition, the guide tube coupled to be rotated in the transfer cart that can be transported back and forth by the feed cart rail formed on the hull guides the chain rock rods so that the rock of the target point can be stably crushed without being affected by the algae.

In addition, the chain arm allows the chain arm to remain within a certain range even when the chain arm dedicated line is stopped through the rail transfer, thereby minimizing the movement of the hull and easily adjusting the position where the chain arm rod is dropped so that the fracture can be easily and stably made.

Even when the hull is affected by waves or shells, it reduces vibration, reduces the likelihood of damage to the equipment, and allows work to continue.

It is an object of the present invention to provide a submarine cable installation chain arm dedicated line that enables the construction of a submarine cable such as lock-bum construction by using the above configuration and an installation method using the same.

Along with this, although not separately described, other objects within the range that can be inferred in consideration of the specific details and claims for carrying out the invention are included in the overall problem of the present invention.

In the present invention as a specific means for solving the problems of the present invention in the chain arm dedicated line for submarine cable installation and installation method using the same, a pair of crane rail (1b) formed in the longitudinal direction on the hull (1) and the crane rail ( A chain rock rod 10 which is lifted by a gantry-structured crane 2 capable of forward and backward transfer by 1b) and a wire 2c wound on the crane 2, and smashed by hitting the underwater rock R while free-falling. And the crane arm 2 formed on the hull 1 between the pair of crane rails 1b so that the chain arm rod 10 or the wire 2c does not interfere with the hull 1 when the crane 2 moves inside the hull 1. Characterized in that the transfer space (1a) is included.

A pair of cranes formed on the buffer panel 51 supported by several panel supports 52 having a buffer means 5 on the upper part of the hull 1 and the buffer panel 51 in the longitudinal direction of the hull 1. Underwater rock (R) while being lifted by the rail (1b), the crane (2) of the gantry structure that can be moved back and forth by the crane rail (1b), and the wire (2c) wound on the crane (2), free fall The chain arm rod 10 which strikes and breaks the crane arm 2 and the chain arm rod 10 or the wire 2c formed in the hull 1 so as not to interfere with the hull 1 when the crane 2 moves inside the hull 1. When the transfer space 1a and the crane 2 move inside the hull 1, the chain arm rod 10 or the wire 2c is cushioned between the pair of crane rails 1b so as not to interfere with the buffer panel 51. The panel space part 53 formed in the panel 51 may be included.

In addition, a pair of transport trolley rails 1c formed on the inner side of the crane rail 1b in the hull 1 or the buffer panel 51, and the trolley transport means 36 configured to be transported back and forth in the transport trolley rail 1c. The transport cart 30 coupled to the can be further included.

In addition, the guide tube 20 coupled to the angular movement of the clamp 34 in the transport cart 30 to guide the chain arm rod 10 may be included.

Shock absorbing means 5 may be further included in the lower part of the crane 2 so that the flow of the crane 2 is minimized even when the hull 1 is shaken, and the flow of the feed cart 30 is maintained even when the hull 1 is shaken. The buffer means 5 may be further included in the lower portion of the balance transfer means 36 so as to be minimized.

Auxiliary rail 61 formed on the upper end of the crane (2), and the auxiliary transport means 62 may be further linked to the auxiliary rail 61 to finely transport the position of the chain arm rod (10).

Or a pair of crane rails 1b formed in the hull 1 in the longitudinal direction, a gantry-structured crane 2 capable of front and rear conveying by the crane rails 1b, and a crane 2 being lifted and lowered. The lockback B1 to which the buoys B2 are coupled, and a pair of transport trolleys 1c formed inside the crane rail 1b in the hull 1 so that the transport trolley 30 can be transferred from the hull 1. ) And a guide trolley 30 seated in the trolley transfer means 36 coupled to be transferred from the transfer trolley rail 1c and an angular movement in the transfer trolley 30 to guide the lockback B1. When the tubular body 20 and the feed cart 30 move to the inside of the hull 1, the conveying space part 1a formed in the hull 1 is included so that the guide tube 20 does not interfere with the hull 1. It may be.

Using the above-mentioned submarine cable installation chain arm dedicated line, the hull moving step (S1) for moving the hull (1) to the underwater rock (R) point, and the hull (1) is stopped, the transfer cart 30 is transported By adjusting the position of the guide pipe body 20, the transfer step of preparing the chain arm rod 10 to be introduced into the guide pipe body 20 by transporting the crane (2) to match the position of the guide pipe body (20) (S2) and the chain rock rod 10 is inserted into the guide tube 20, the chain rock step (S3) and the crushed by hitting the rock (R) in the water and the crushed by the chain rock step (S3) removed The dredging step (S4) to be carried out, the buried step (S5) for embedding the submarine cable (C) in the space dredged by the dredging step (S4), and the rock-Berm construction on the submarine cable (C) It characterized in that using the installation method using a chain arm dedicated wire for submarine cable installation consisting of a protection step (S6).

According to the specific means for solving the above problems,

By constructing a gantry crane, it is possible to lift a heavier chain rock rod than a crane of a crawler structure, and to offset the underwater resistance when the chain rock falls, so that the breaking force is greatly increased and the work can be completed in a short time. .

Since there are few space constraints for winding the wires on the crane, the wires can be wound up a lot, so that it is possible to insert them at a deep depth, thereby increasing the working area.

Since the gantry crane can be placed close to the center of gravity of the hull by the conveying space formed on the hull and the crane rail, the shaking of the hull is small due to the waves, and thus the hull is overturned or the lifting equipment is damaged.

In addition, a shock absorbing means such as a damper is provided so that even if the ship is shaken by the waves, the shaking is transmitted to the guide tube so that the work can be continued regardless of the balance, thereby greatly reducing time and cost.

Since the chain arm rod is guided by the guide tube and free-falls, it can be hit precisely without being affected by the algae at the target position to be crushed, and thus it is possible to greatly save time and money by not crushing unnecessary positions.

When the hull is stopped once, the range that can be broken by the transfer of the chain arm rod and guide pipe by the rail is large, thus reducing the time and fuel required for unnecessary movement of the hull, thereby improving workability.

In addition to basic GPS and undersea maps, it is easy to find the optimal fracture point by accurately measuring and determining the location of rocks using underwater cameras and echo sounders.

It is possible to finely adjust the position of the chain arm bar by the micro-transport means can more effectively match the position of the chain arm bar to the position of the guide tube than moving the crane little by little.

Heavy heavy chain dredger movement consumes a lot of fuel, and the fuel required for starting to move the stationary dredger away from the inertia is very high compared to the fuel consumed during the movement.

The rugby construction is possible with the same configuration, so the additional cost is reduced due to the protection construction of the submarine cable.

1 is a side view showing an example of the present invention;
Figure 2 is a side view of the transfer cart is applied to the present invention
Figure 3 is a front view to which the transfer bogie is applied to the present invention
Figure 4 is a plan view to which the transfer bogie is applied to the present invention
5 is an exemplary view showing in detail the transfer balance of the present invention
Figure 6 is an exemplary view showing in detail the stopper portion of the present invention
Figure 7 is a side view of the micro-transport means applied to the present invention
8 is a front view to which the shock absorbing means is applied to the present invention;
9 is a plan view to which the buffer panel is applied to the present invention
10 is a front view of the buffer panel is applied to the present invention
Figure 11 is an exemplary view showing a rocker on the submarine cable using the present invention
Figure 12 is an exemplary view showing another embodiment of the transfer bogie of the present invention
FIG. 13 is a block diagram schematically showing a method for underwater dredging and cable laying according to an embodiment of the present invention. FIG.
14 is an embodiment to which the conventional crawler crane is applied

The present invention is to provide a submarine cable installation chain arm dedicated line and an installation method using the same, which will be described in more detail with reference to the accompanying drawings, the accompanying drawings to easily describe the contents and scope of the present invention The examples used herein are not limited thereto, and the terms used are only for describing the embodiments in detail and are not limited to the terms.

As shown in FIG. 1, a marine work hull 1 such as a barge is provided, and a pair of crane rails 1b are formed on the upper surface of the hull 1 in the longitudinal direction, and the crane rail 1b The crane 2 is integrally formed with the wheel 2a which is settled, and the said wheel 2a.

The crane 2 can be transported in the longitudinal direction of the hull 1 so that the position of the chain arm rod 10 lifted by the wire 2c wound on the take-up roll 2b formed on the upper part of the crane 2 can be conveyed. Change it.

The crane 2 is preferably formed as a gantry crane having a truss structure.

Another form of gantry crane, also called portal cranes, is a type in which a supporter bridge is attached to an overhead crane or bridge crane to form a cloud and a rail under the bridge.

The truss is a structural method of supporting the load by weaving straight steel or wood into a net shape based on a triangle and distributing the load to each other to reduce the load received per unit area, and the truss structure to both sides Since the gantry type crane 2 is formed, the maximum load of the chain arm rod 10 which the crane 2 can lift can be increased to 200 tons.

In addition, since the winding roll 2b on which the wire 2c is wound may be installed to be exposed without a separate casing from the upper portion of the crane 2c, the winding roll 2b may be enlarged to wind the wire 2c longer. Since the length of the wire 2c, which is released when the chain rock rod 10 falls, is long, it is possible to fracture the underwater rock of deep water depth.

In the conventional crawler crane 2-1 having a boom stand, as shown in FIG. 14, the crane 2-1 is positioned on one side of the hull 1, and the crane 2-1. The boom protrudes outwards, and the wire extending from the main body is lowered by the pulley at the end of the boom so that the chain arm bar 10 is coupled to the end of the wire.

A boom is a type of projecting rod that supports a working machine. The boom is fixed with a hinge and pushed up from the bottom using a cylinder, or a pulley is installed at the tip to hook the wire and wind around the winch. It is a structure to make it possible.

Therefore, in order to increase the workability of the conventional crawler crane 2-1, the longer the length of the boom, the more the horizontal angle of inclination of the boom is laid down horizontally, the end of the boom from the center of gravity A, which is the center of the hull 1 Since the x-axis distance l1 is far from the center of gravity A of the hull 1 even when the rotation radius r1 is long and the horizontal vector of the radius r1 is viewed separately, the chain arm rod ( The load of 10) acts largely on the hull 1 to generate a rotation moment, and the hull 1 becomes unstable.

Therefore, the load of the chain arm bar 10 can be used only 50-55 tons, the lighter than the chain arm bar of the 200-ton load of the present invention has no choice but to use a low breaking force.

In addition, since the crawler crane (2-1) is configured to be wired into the inner case of the crane (2-1), there is a problem in that only a seabed with a relatively shallow depth can be used because there is a limit in the diameter to wind the.

In particular, considering the realistic conditions in which the pitching occurs when the ship shakes back and forth due to waves or shoulders, the rotation moment becomes larger, which may cause a big problem in the stability of the hull 1 and the durability of the boom, and the hull 1 overturns. There is also concern.

However, in the present invention, as shown in Figure 1 moving the crane 2 through the transfer space (1a) and the crane rail (1b) closer to the center of gravity (A), the center of the hull 1, the center of gravity ( The radius of rotation (r2) from A) to the end of the crane (2) becomes small, especially when the horizontal vector is only examined, since the x-axis distance (l2) can be adjusted to converge to zero (0), the hull (1) is very large. It is a stable state, and the pitching, which is the shaking caused by the wave of the wave, is greatly reduced, so that the work can be continued even in the wave situation.

Looking at the other configuration of the crane (2) and the feed cart 30 is provided with a hull (1) for offshore work such as barges, as shown in Figures 2 to 4, a longitudinal direction on the upper surface of the hull (1) A pair of crane rails 1b are formed, a wheel 2a placed on the crane rail 1b, and an integrated crane 2 on the wheels 2a constitute a longitudinal direction of the hull 1. The crane 2 can be transported so as to change the position of the chain arm rod 10 being lifted from the top of the crane 2.

The wheels 2a of the crane 2 are supported by the crane rails 1b, so that the wheels 2a should be configured with two or more wheels 2a on the left side and the right side in order to prevent the crane 2 from falling down.

In addition, a pair of transport trolley rails 1c are formed on the upper surface of the hull 1 in the longitudinal direction of the hull 1 inside the crane rail 1b so as not to interfere with the crane rail 1b. The balance transfer means 36 is formed to be coupled to 1c, so that the balance transfer means 36 can be transferred along the transfer balance rail 1c.

The transport balance rail 1c may be constituted by a pipe in which an electromagnet is embedded, and the balance transport means 36 having a hollow shape is coupled to the transport balance rail 1c.

The transfer balance rail 1c and the balance transfer means 36 preferably use an oscillator rail.

The chain arm rod 10 is provided so as to strike and fracture the underwater rock (R) while being lifted by the crane 2 of the hull 1 and free fall. Chain arm rod 10 is formed of a wedge-shaped weight of several tens of tons, and a ring is formed so that the crane (2) wire (shackle) is connected to the top.

In addition, the chain rock rod 10 is lifted from the hull 1 to a height of 3 ~ 20m to fall freely, and the chain rock rod 10 enters the water while the descending speed is increased by the gravity acceleration, underwater rock (R) Dredging is carried out with

In addition, the guide tube 20 according to the present invention is provided to form the underwater tunnel 22 in the striking direction of the chain arm rod (10). The guide tube body 20 is a hollow tube body having an inside, and an underwater tunnel 22 having an enlarged size compared to the outer diameter of the chain arm rod 10 is formed therein.

Since the chain arm rod 10 lifted by the crane 2 and free-falling is guided through the submerged tunnel 22 inside the guide pipe 20 isolated from the external environment, the chain arm rod 10 is not affected by strong winds and tidal currents. Accurately hitting, and by adjusting the angle of the clamp 34 of the feed cart 30, the upright installation and dismantling of the long guide pipe with respect to the maximum lifting height of the crane 2 is facilitated, and the chain arm rod is tilted by the inclination of the guide pipe 20. (10) The hitting direction is adjusted to the inclination angle, and the rails (1b, 1c) in the hull (1) or the buffer panel (51) in order to ensure that the hitting force is efficiently transmitted in response to a variety of underwater terrain even when the hull (1) is stationary. It is configured to transfer the crane (2) and the feed cart (30) by linear reciprocating motion.

In addition, the guide hopper 20 may be provided with a guide hopper 24 of the upper and lower narrow structure to guide the central entrance of the chain arm rod (10).

Accordingly, even if the free fall after lifting to a height of 10m or more from the bottom of the hull 1 in order to increase the gravity acceleration of the chain arm rod 10 is lifted by the crane (2), as shown in Figure 5 hull (1) The chain arm rod 10 is accurately entered into the center of the underwater tunnel 22 by the upper region of the guide tube 20 and the guide hopper 24 which extends relatively high, so that the free fall direction can be precisely guided.

The crane 2 lifting the chain arm rod 10 may be transported on the crane rail 1b coupled to the lower wheel 2a of the crane 2, so that the chain arm rod 10 of the guide tube 20 Since the position of the crane 2 is adjusted to enter the inside precisely, the crushed rock rod 10 is precisely hitting the target point of the crushed rock without being affected by the algae while the crushed rock rod 10 is moved in the underwater tunnel 22, so the rock crushing efficiency is increased. Is improved.

In addition, the transport cart 30 according to the present invention is coupled to the cart transport means 36 coupled to make a linear motion in the transport cart rail (1c) installed in the hull 1, to adjust the position of the guide tube 20 It is provided.

That is, the guide pipe body 20 is lifted by the crane 2, the depth of the underwater entry is determined with the lower end inserted into the clamp 34, and then the guide pipe body 20 by the operation of the clamp 34 When is clamped, the crane (2) wire connected to the guide tube body 20 is separated, and then the chain arm operation is performed after lifting the chain arm rod 10 using the crane (2).

As shown in FIG. 5, the transfer cart 30 includes a traveling body 32 which is moved back and forth, left and right on the balance transfer means 36 on the x and y axis rails 32a and 32b. It is coupled to the hinge (33) and the connecting rod (33d) to the 32 to facilitate the upright installation and dismantling of the long guide pipe, and the direction of the chain arm bar 10 by the tilt of the guide pipe 20 is adjusted to the inclination angle to various Clamps 34 for clamping the guide tube 20 while being rotated to efficiently transmit the impact force in response to the underwater terrain, the traveling hinge 33b formed on the transport cart 30 and the clamp hinges formed on the clamp 34 ( 33c) is installed on the cylinder 33a configured to adjust the angle of the clamp 34 by rotating the hinge 33 by adjusting the spacing of the 33c, and the guide pipe body installed on the z-axis rail 35 extending below the clamp 34. 20 is a stopper portion 40 for controlling the movement position in the z-axis direction.

The traveling body 32 is moved back and forth and left and right by the x and y axis rails 32a and 32b, thereby adjusting the position of the guide tube 20 fastened to the clamp 34 in the x and y axis directions. While being hit the chain rock rod 10 is precisely corrected.

The guide tube 20 does not interfere with the hull when the trolley transfer means 36 moves to the inside of the hull 1, and at the same time, the degree of freedom in the direction and the positional change of the guide tube 20 in the stationary hull 1 In order to increase the hull is formed a transport space (1a) is cut from the front to the center.

Therefore, in dredging the submarine cable laying line, the underwater rock (R) is precisely crushed within the error range while minimizing the number of blows to the chain rock rod (10), thereby preventing air loss due to unnecessary rock crushing. It is greatly shortened.

At this time, the clamp 34 is provided to be clamped or unclamped automatically by a manual method or a hydraulic cylinder by a locking mechanism such as a bolt, and the inlet of the clamp 34 to facilitate the initial insertion of the guide tube 20. Guide hoppers are installed.

When the inclination of the guide tube 20 is adjusted by adjusting the angle of the clamp 34, the striking force of the chain arm 10 is changed so that the striking force is improved while the striking force is applied at an inclination angle in addition to the vertical direction to correspond to various underwater terrains. do.

As shown in FIG. 6, the guide pipe body 20 inserted into the clamp 34 is determined by the stopper part 40, and the length of the underwater entry is determined by the stopper part 40. As shown in (a), the guide arm 20 is formed as a support arm 42 to be hung on the bottom so that the hinge 42a is axially actuated, or clamped on the outer circumferential surface of the guide tube 20 as shown in FIG. The guide tube 20 is positioned in the z-axis direction while being transported along the z-axis rail 35 by the hydraulic cylinder operation by forming the multi-clamp 44, and the guide tube 20 is multiplied with the clamp 34. Double clamping at positions spaced by the clamps 44 ensures a firm holding force.

Therefore, even if the crane 2 wire is separated after the guide pipe 20 is inserted into the clamp 34, the lower part of the guide pipe 20 is caught by the stopper part 40 to prevent the downward movement, as well as the guide pipe 20. The underwater entry length of is precisely adjusted. When the stopper portion 40 is formed of the multi clamp 44, the clamp 34 and the multi clamp 44 are alternately clamped and unclamped, and the multi clamp 44 is linearly reciprocated in the z-axis direction. There is an advantage that the position of the guide tube 20 is simply precisely adjusted without using the crane 2.

It may be configured to include a downward underwater camera 25 and the sound echo 26 on the lower side of the guide tube 20.

The echo sounder 26 emits ultrasonic waves to the sea floor and receives the sound waves reflected by the receiver to detect the depth of the sea floor based on the calculated reflection time, thereby easily detecting the depth of the guide tube 20. Measure and adjust.

The underwater camera 25 may help to determine the appropriate fracture position by visually judging the state of the feature close to the guide tube 20 sufficiently entered according to the depth measured by the echo sounder 26.

In addition to the basic configuration, as shown in FIG. 7, a fine transfer means 6 may be further provided for more precisely adjusting the position of the chain arm bar 10 at the top of the crane 2.

The fine conveying means 6 is composed of the auxiliary rail 61 and the auxiliary conveying means 62, the chain arm rod 10 is lifted to the auxiliary conveying means (62).

Auxiliary transport means 62 is to have a smaller size than the crane (2), fine adjustment of position with less power than to transport the crane (2), so that the chain arm rod 10 begins to drop the position It can be adjusted more precisely.

As shown in (a) of FIG. 8, the buffer means 5 may be further configured on the lower portion of the crane 2 and the balance transfer means 36, respectively.

Although the shock absorbing means 5 is illustrated in the shape of a spring in the drawing, the shock absorbing means 5 may be variously implemented such as a shock absorber or a spring or a hydraulic damper.

The shock absorbing means 5 can be comprised in the lower part of the crane 2 so that it may be upward from each wheel 2a.

In addition, in the balance transfer means 36 coupled to the transfer balance rail 1c, buffer means 5, such as a damper, may be respectively configured on both sides.

In the sea, the ship is swayed by the waves, the swells, etc. during the voyage.Rolling, in which the ship is shaken from side to side, and pitching, in which the ship is swinging back and forth, and yaw, in which the cross and the yaw are combined, may occur. , If the degree of shaking is severe, the chain arm rod 10 coupled by the crane 2 in the hull 1 may not be correctly introduced into the guide tube body 20, and the transfer bogie 30 in the hull 1. The guide tube 20 coupled by shaking may also cause problems such as a position error with respect to the chain arm hitting point at which the chain arm bar 10 should fall, or the guide tube 20 is damaged due to continuous external force.

Therefore, even when the hull shakes, if the buffer means 5 is provided as shown in (b) of FIG. 8, the crane 2 and the feed cart 30 are to be stopped by inertia, respectively, and the hull 1 shakes. The kinetic energy according to the damping means (5) can be minimized to shake the crane (2) and the feed cart (30).

Therefore, even if the ship is shaken by the waves, the shaking of the crane 2 and the feed cart 30 is relatively minimized so that the chain arm rod 10 is not introduced into the guide tube 20, and there is no problem in the guide tube 20. By the chain rock rod 10 will be able to fall to the exact chain rock hitting point.

As another embodiment of the shock absorbing means 5, a shock absorbing panel 51 spaced upward from the hull 1 may be formed as shown in FIGS. 9 to 10 (a).

A panel support 52 may be interposed between the buffer panel 51 and the hull 1, and the panel support 52 may be provided with a buffer means 5, or the buffer panel 51 and the hull ( The buffer means 5 may be interposed between 1).

On the upper portion of the shock absorbing panel 51, a crane rail 1b for placing the crane 2 to be transported and a transport trolley rail 1c for coupling the transport trolley 30 to each other are formed, and the crane rail ( The feed cart rail 1c is formed inside the crane rail 1b so as not to interfere with 1b).

As the transport cart 30 is transferred from the upper portion of the buffer panel 51, the panel space portion 53 is formed to be open to one side of the buffer panel 51 so that the guide tube 20 does not interfere with the buffer panel 51. Do it.

Therefore, even when the hull is shaking, as shown in (b) of FIG. 10, the cushioning means 5 is provided in the panel support 52 coupled to the lower part of the buffer panel 51, so that the buffer panel 51 is stopped by inertia. The buffer means 5 cancels the kinetic energy caused by the shaking of the hull 1 and the crane 2 coupled to the buffer rail 51 and the buffer rail 51 with the crane rail 1b. It is possible to minimize the shaking of the transport balance 30 coupled to the transport balance rail (1c).

Submarine cables and pipelines are social infrastructures for the transport of power, drinking water, and communications from land to islands, taking into account possible damages depending on the location of installation, for example, damage caused by anchors and fishing gear by navigating vessels. Protective method is required.

Rock-berm, a form of stone stacking, protects the submarine cables and pipelines from the fluid forces caused by the flow and the external forces generated by the collider.

By using the configuration of the chain arm dedicated wire for submarine cable installation, it can be used for rock-berm construction to protect the already installed submarine cable (C).

The rock bag B1 is lifted in place of the chain arm rod 10 in the crane 2.

The rock bag B1 is a weight that is made of a bundle of finely divided rocks into a bag such as a net and is also mainly called a stone bag.

The lockback (B1) is not intended to be crushed, and because it is installed on the already installed submarine cable (C) on the top, such as chain arm rods (10) does not allow free fall.

The lockback (B1) is to be lowered gradually to the target point through the guide pipe 20, such as the crane (2) connected.

In the construction of stacking the lockback (B1) in the position where the submarine cable (C) is installed, if the sinking form of the lockback is not correct in the past, there was a hassle for the diver to adjust the position one by one. Before inputting (B1) it can be installed in advance by connecting the buoy (Boy) (B2) in the middle of one side of the lockback (B1).

If buoy (B2) is coupled to one side of the lockback (B1) coupled buoy (B2) by the buoyancy force of buoy (B2) coupled to one side of the lockback (B1) that has sunk on the sea floor, and thus the lockback ( The direction of B1) naturally sinks in the desired direction.

Therefore, the lockback B1 is prevented from standing upside down or inverted in the unintended direction, and the lockback B1 is induced to sink in the forward direction on the submarine cable by the buoyancy force of the buoy B2.

Therefore, in the construction related to the protection method, it is possible to construct with the above-mentioned submarine cable installation chain rock without additional equipment, which can greatly reduce the time and cost required for the construction.

In another embodiment, as shown in Figure 12 may be configured not to include the clamp 34 and the guide tube 20 in the transport cart (30).

The feed cart 30 may perform a linear movement forward and backward in the longitudinal direction of the hull 1 through the feed cart rail 1c, and transfers an object to be coupled to or separated from the wire 2c of the crane 2. It can be carried in (30).

The object can be changed as needed during the dredging process, such as chain rock rod (10) or lockback (B1), the transport cart 30 can be selectively configured from the flat bogie and clamp bogie.

As the transport cart 30 transports the object, the transport of the crane 2 can be minimized, and the worker can reduce the process of directly transporting the object, thereby increasing workability.

FIG. 13 is a block diagram schematically illustrating a method for dredging underwater chain cancer according to an embodiment of the present invention.

The installation method according to the present invention consists of a hull moving step (S1), transfer step (S2), chain rock step (S3), dredging step (S4), buried step (S5), protection step (S6).

1) Hull moving step (S1)

In the ship moving step (S1) according to the present invention by using the chain rock dedicated line for installing the submarine cable, to move the hull (1) to the underwater rock (R) point to be hit based on the information about the seabed topography previously observed and GPS. Step.

2) Transfer step (S2)

The transfer step S2 according to the present invention stops the hull 1 and moves the trolley transfer means 36 connected on the transfer trolley rail 1c constituted in the hull 1 to move the transfer trolley 30 to an appropriate position. The guide tube 20 is adjusted in the most efficient direction to crush and move each of the clamps 34 coupled to the feed cart 30 by the rotation cylinder 33a, and the end of the guide tube 20 The position is determined based on the measurement results of the underwater camera 25 and the echo sounder 26 formed on the guide tube 20.

In accordance with the position of the guide pipe 20, the crane 2 connected to the crane rail (1b) configured in the hull 1 to move the chain arm rod 10 is positioned to the most suitable position to be inserted into the guide pipe (20) Let's do it.

3) Chain rock stage (S3)

Chain cancer step (S3) according to the present invention is to put the chain arm rod 10 into the guide tube 20, the chain arm rod 10 is lifted to the height of 3 to 20m from the hull (1) free fall, the chain The arm rod 10 is moved on the underwater tunnel 22 inside the guide tube 20 to hit the underwater rock R.

Accordingly, the chain rock rod 10 is prevented from flowing by strong winds while being moved by free fall, and the rock fracture target is precisely hit without affecting the algae, thereby improving rock crushing efficiency.

4) Dredging stage (S4)

Dredging step (S3) according to the present invention after the chain rock step (S3), after passing the chain rock step (S2), is a step of pouring up the rock crushed water in the bucket.

When the crushing and dredging of the target point is completed, it repeats again from the transfer step (S2) to crush and dredge the adjacent underwater rock (R).

If there is an area where the chain arm is not completed even after repeating from the transfer step (S2) to the dredging step (S4), go back to the hull moving step (S1) to move the hull (1) to a new position, and from the transfer step (S2) again Repeating the dredging step (S4) will be able to save a great deal of cost and time.

5) Buried stage (S5)

In the embedding step S5 according to the present invention, the submarine cable C is buried in the dredged space part through the dredging step S4.

6) Protection step (S6)

The protection step (S6) according to the present invention is a lock-bum construction for protecting the embedded submarine cable (C).

The lockback B1 coupled with the buoy B2 is connected to the crane 2 and stacked on top of the submarine cable C pre-installed through the guide tube 20 to prevent the fluid force from the current and the external force generated by the collider. It protects submarine cables and pipelines.

As described above in the detailed description of the present invention has been described with respect to the most preferred embodiment of the present invention, various modifications will be possible within the scope without departing from the technical scope of the present invention. Therefore, the scope of protection of the present invention should not be limited to the above embodiments, but the scope of protection from the technologies described in the claims and the equivalent technical means will be recognized.

1: hull 1a: conveying space part
1b: Crane rail 1c: Feed cart rail
2: crane 2a: wheels
2b: winding roll 2c: wire
2-1: Crawler Crane
10: chain rock rod 20: guide tube
22: Underwater Tunnel 24: Guide Hopper
25: underwater camera 26: echo sounder
30: feed cart 32: traveling body
32a, 32b: x, y-axis rail 33: hinge
33a: rotating cylinder 33b: traveling body hinge
33c: clan hinge 33d: connecting rod
34: clamp 35: z-axis rail
36: Balance Transfer
40: stopper portion 42: support arm
42a: hinge 44: multiclamp
5: buffer means 51: buffer panel
52: panel space part 53: panel support
6: fine transport
61: auxiliary rail 62: auxiliary transport means
A: Center of gravity B1: Lockback
B2: buoy C: submarine cable
R: Rock W: Wire

Claims (9)

A pair of crane rails 1b formed in the hull 1 in the longitudinal direction;
A crane (2) having a gantry structure that can be moved back and forth by the crane rail 1b;
A chain rock rod 10 which is lifted by the wire 2c wound around the crane 2 and hits and crushes the underwater rock R while being free-falled;
Transport space portion formed in the hull 1 between the pair of crane rails 1b so that the chain arm rod 10 or wire 2c does not interfere with the hull 1 when the crane 2 moves inside the hull 1. (1a);
A pair of feed trolley rails 1c formed inside the hull 1 from the crane rail 1b;
A transfer balance 30 coupled to the balance transfer means 36 configured to transfer back and forth in the transfer balance rail 1c;
A guide tube 20 coupled by the clamp 34 angularly moved in the feed cart 30 to guide the chain arm rod 10;
Dedicated chain arm for submarine cable installation, characterized in that included ..
A pair of crane rails 1b formed in the hull 1 in the longitudinal direction;
A crane (2) having a gantry structure capable of forward and backward transport by the crane rail (1b);
A lockback B1 that is lifted by the wire 2c wound on the crane 2 and coupled with the buoy B2 for inducing a positive posture and descending;
Transfer space portion formed in the hull 1 between the pair of crane rails 1b so that the lockback B1 or the wire 2c does not interfere with the hull 1 when the crane 2 moves inside the hull 1 1a);
Sub chain cable dedicated chain arm for installation, characterized in that included.
A buffer panel 51 supported by several buffer means 5 at the top of the hull 1;
A pair of crane rails 1b formed on the shock absorbing panel 51 in the longitudinal direction of the hull 1;
A crane (2) having a gantry structure capable of forward and backward transport by the crane rail (1b);
A chain rock rod 10 which is lifted by the wire 2c wound on the crane 2 and hits and crushes the underwater rock R while being free-falled;
A transfer space portion 1a formed in the hull 1 such that the chain arm rod 10 or the wire 2c does not interfere with the hull 1 when the crane 2 moves inside the hull 1;
Panel formed in the shock absorbing panel 51 between the pair of crane rails 1b so that the chain arm bar 10 or the wire 2c does not interfere with the shock absorbing panel 51 when the crane 2 moves inside the hull 1. A space part 53;
Sub chain cable dedicated chain arm for installation, characterized in that included.
The method of claim 2 or 3;
A pair of transport trolley rails 1c formed in the hull 1 or the buffer panel 51 inside the crane rail 1b;
A transfer balance 30 coupled to the balance transfer means 36 configured to transfer back and forth in the transfer balance rail 1c;
Sub chain cable dedicated chain arm for installation, characterized in that it further comprises.
The method according to claim 4;
Submarine cable installation chain arm dedicated line, characterized in that it further comprises a guide pipe 20 is coupled by the clamp 34 angular movement in the transport cart 30 to guide the chain arm rod 10 or lock back (B1).
The method according to claim 1;
Submarine cable installation chain arm dedicated line, characterized in that the shock absorbing means (5) is further included in the lower part of the crane (2) so that the flow of the crane (2) is minimized even when the hull (1) shakes.
The method according to claim 4;
Submarine cable installation chain arm dedicated line, characterized in that the shock absorbing means (5) is further included in the lower portion of the bogie conveying means (36) so that the flow of the conveying bogie (30) is minimized even when the hull (1).
The method according to any one of claims 1 to 3;
An auxiliary rail 61 formed at an upper end of the crane 2;
An auxiliary transport means 62 interlocked with the auxiliary rail 61 to finely transport the position of the chain arm rod 10;
Submarine cable installation line for submarine cable, characterized in that further included.
A pair of crane rails 1b formed in the hull 1 in the longitudinal direction are installed with a gantry-structured crane 2 capable of forward and rearward movement to lift the chain arm bar 2 or the lockback B1 from the crane 2 or By using the chain arm dedicated wire for submarine cable installation,
Hull moving step (S1) for moving the hull (1) to the underwater rock (R) point;
The hull 1 is stopped, the transfer bogie 30 is transported to adjust the position of the guide tube 20, and the crane 2 to be transported to match the position of the guide tube 20 chain arm rod (10) ) Transport step (S2) to be prepared to be introduced into the guide tube (20);
A chain cancer step (S3) of inserting the chain arm rods 10 into the guide tube body 20 and striking the rock mass in the water (R);
Dredging step (S4) for removing the crushed material by the chain rock step (S3);
A embedding step (S5) of embedding the submarine cable (C) in the space dredged by the dredging step (S4);
A protection step (S6) of performing a rock-berm construction on the submarine cable C;
Installation method using a chain arm dedicated wire for submarine cables.

Images