JP2012045970A - Hull moving and mooring apparatus of working ship - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a hull moving and mooring apparatus capable of achieving stable movement by moving a working ship as if walking is performed by using a plurality of spuds.SOLUTION: Four spuds 3 in total are provided and arranged on a hull 2 at port and starboard sides at a bow, respectively, and at port and starboard sides at a stern. All the spuds 3 can be oscillated by an oscillating apparatus, and can be elevated and lowered by an elevating/lowering apparatus. Each of the spuds can be moved wholly and stably even in any direction of the periphery of the hull by repeating the return of each of the spuds in the vertical direction after the inclination thereof in either direction of the whole periphery, and the inclination of each of the spuds in the reverse direction after the inclination thereof in either direction of the whole periphery.

Description

  The present invention relates to a hull moving and mooring device for a work ship.

  Conventionally, some work vessels used for dredging work, for example, three to four vertical columnar spuds supported so as to be able to move up and down on the hull, and elevating drives such as pin roller jacks for elevating each spud. There is a device that is configured to position the trolley by protruding a spud on the water bottom at a predetermined position.

  In such a work ship, when the hull is moved, these spuds are pulled out from the bottom of the water, mooring lines, scooping lines, etc. are taken in and out, and a propulsion device of the work ship is used. For this reason, there is a problem that the movement of the trolley requires skill, and the position of the trolley cannot be changed accurately within a short time.

  Therefore, in addition to the two fixed spuds near the heel, one oscillating portion supported at the lower end of the spud supported so as to be able to move up and down on the work boat is formed at the center near the heel, A swing drive device for swinging the swing portion is provided, and when the swing portion of the spud protruding from the bottom of the water is swung by the swing drive device, the work ship moves by scratching the bottom of the water at the lower end of the spud. (See, for example, Patent Document 1).

  In the one described in Patent Document 1, when moving the work ship, the work ship is moved forward by pulling out the two fixed spuds from the bottom of the water and causing the swinging spud to move forward or tilting forward. The reverse operation is performed.

JP-A-6-298182

  In the thing of the said patent document 1, since a fixed spud is pulled out from a water bottom and the dredging side is made into a free state and a work ship is moved, movement becomes unstable.

  Therefore, an object of the present invention is to provide a hull moving / mooring device that enables stable movement by moving a work ship as if walking, using four spuds.

  The invention according to claim 1 is a hull moving / mooring device for a work ship in which a plurality of spuds are swingable with respect to a hull so as to be swingable with a swinging device and capable of being lifted with a lifting device. Are provided around the hull at intervals, and the spuds are both movable up and down and swingable.

  In this way, each spud is repeatedly tilted in any direction around the entire circumference and then returned to the vertical direction, or tilted in any direction around the entire circumference and then tilted in the reverse direction. Thus, the whole can be stably moved in any direction around the hull. In particular, since any one of the spuds is always driven into the bottom of the water and can be moved in a state, stable movement can be realized.

  According to a second aspect of the present invention, it is desirable that four spuds are provided on the left and right chords of the heel and on the left and right chords of the heel, respectively.

  In this way, it is possible to move the hull stably in an arbitrary direction by moving the four spuds provided on the left and right chords of the heel to the left and right chords, respectively, like four legs. it can.

  4. The structure according to claim 3, wherein each of the spuds is incorporated in a spud casing together with the swing device and the lifting device, and the spud casing is disposed in a vertical through hole provided in the hull. Is desirable.

  In this way, each spud can be easily assembled to the hull.

  According to a fourth aspect of the present invention, the swing device includes an upper support means and a lower support means, and the spud has the support portion formed by the lower support means as a center of rotation. It is desirable that the support part is supported so as to be tiltable in any direction around the entire circumference.

  In this way, each spud can be moved like a foot by repeatedly inclining it in any direction around the entire circumference and returning it to the vertical direction.

  According to a fifth aspect of the present invention, the upper support means includes a central portion that supports the spud so as to be inclined via a spherical sleeve, and four projecting shaft portions that project radially outward from the central portion at equal angular intervals. And a cylinder member that displaces the central portion in any direction of the entire circumference. The support means may be configured to support the spud so as to be tilted at a fixed position via a spherical sleeve.

  In this way, with a simple structure, each spud is tilted in any direction around the entire circumference and then returned to the vertical direction, or tilted in any direction around the entire circumference and then tilted in the reverse direction. Can be repeated.

  According to a sixth aspect of the present invention, the lifting device includes a rack provided along the longitudinal direction of the spud, a pinion that meshes with the rack in a rotatable manner, and a driving unit that rotationally drives the pinion. It can be set as the structure provided with.

  If it does in this way, each spud can be raised / lowered easily using a rack and a pinion.

  In the present invention, since the spuds are provided so as to be able to move up and down and swing on the left and right chord sides of the hull tip and the left and right chords side of the hull, any four spuds can be moved by moving like four legs. The hull can be moved stably in the direction.

It is explanatory drawing of arrangement | positioning of the spud in a work ship. The relationship between a spud, a raising / lowering apparatus, and a rocking | swiveling apparatus is shown, (a) is a top view, (b) is a front view. (A) is explanatory drawing of the relationship between a guide member and a protrusion shaft part, (b) is explanatory drawing of a rack and a pinion. (A) (b) is explanatory drawing of a raising / lowering apparatus, respectively. The state where the spud is inclined is shown, (a) is a plan view, and (b) is a front view. It is operation | movement explanatory drawing. It is operation | movement explanatory drawing. It is operation | movement explanatory drawing. It is operation | movement explanatory drawing. It is operation | movement explanatory drawing. It is operation | movement explanatory drawing. It is operation | movement explanatory drawing. It is operation | movement explanatory drawing.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  As shown in FIGS. 1 (a) and 1 (b), reference numeral 1 denotes a work ship, and four spuds 3 are provided on the left and right strings side of the tip and on the left and right strings side of the ship's hull 2, respectively.

  As shown in FIGS. 2A and 2B, each spud 3 is incorporated in the spud casing 4 together with the swing device 5 and the lifting device 6, and both the devices 5 and 6 are provided integrally with the spud casing 4. Is unitized. The spud casing 4 is disposed in the vertical through hole 2 a provided in the hull 2 so that the spud 3 can be swung by the swinging device 5 and can be lifted by the lifting device 6. Provided. Each spud 3 can be moved up and down and swingable independently of each other. In addition, the convex part 2b which determines the attachment position of the spud casing 4 is provided in the middle of the through-hole 2a.

  Each oscillating device 5 has upper support means 7 and lower support means 8, and both means 7 and 8 are provided at regular intervals in the vertical direction. Thereby, each spud 3 is supported so that the support part by the upper support means 7 can incline in any direction of the entire circumference, with the support part by the lower support means 8 as the rotation center.

  The upper support means 7 supports the spud 3 via the spherical sleeve 9 so as to be tiltable in any direction around the entire hull 2 and is spaced 90 degrees radially outward from the central portion 10a. A cross-shaped support member 10 having four projecting shaft portions 10b projecting at equal angular intervals), a guide member 11 that supports each projecting shaft portion 10b so as to be movable in the axial direction, and each projecting portion with respect to the central portion 10a. Four cylinder means 12 provided between the shafts 10b and displacing the central portion 10a in any direction around the entire circumference are provided. Each guide member 11 is provided on the upper side of the spud casing 4, and the vertical movement of the protruding shaft portion 10 b is restricted, but the horizontal movement is allowed so that the protruding shaft portion 10 b is inserted therethrough. Has a long hole shape that is long in the left-right direction (see FIG. 3A).

  By extending and contracting these four cylinder means 12 in a predetermined relationship, for example, as shown in FIGS. 4 (a) and 4 (b), the moving direction of the support member 10 is guided by the guide member 11, and the central portion 10a. Can be moved all around the hull 2. The moving direction of the central portion 10a is the moving direction of the hull 2.

  The lower support means 8 supports the spud 3 in a central position of the support member 14 via the spherical sleeve 13 so that the spud 3 can be inclined in any direction around the entire hull 2 at a fixed position. When the support position of the spud 3 by the support member 10 is displaced in the horizontal plane with respect to the support position of the spud 3 by the support member 14 (support means 8), the spud 3 is inclined.

  The lifting device 6 is provided with a rack 21 along the longitudinal direction of the spud 3, and the drive gear 22 (pinion) meshes with the rack 21 so as to be rotatable as shown in FIG. The drive gear 22 is rotationally driven by a drive motor 23 as drive means. Further, as shown in FIGS. 4A and 4B, guide rollers 26 are provided on both sides of the drive gear 22 and at a position that forms an angle of 90 degrees so that stable elevation can be realized. Reference numeral 25 denotes a gear cover.

  The lifting device 6 is disposed in the spud casing 4 above the lower support means 8 via the connecting member 24, and the positional relationship thereof is maintained even when inclined.

  According to the above apparatus, for example, as shown in FIGS. 6 to 13, when moving from the left side to the right side in the drawing, first, as shown in FIG. 6, from the state where all the spuds 3 are upright, For example, the spud 3 positioned on the rear side in the traveling direction is lifted and tilted so that the lower end portion of the spud 3 is positioned in the desired traveling direction (see FIG. 7). At this time, since the remaining spud 3 is driven into the bottom of the water, the hull 2 is stably supported by the spud 3.

  Then, the hull 1 is moved by a distance corresponding to the inclination in a desired traveling direction by operating the cylinder means 12 so that the inclined spud 3 is in an upright state in the vertical direction. Then, as shown in FIG. 8, the spud 3 located on the front side in the traveling direction is inclined so that the upper end portion is located on the front side of the new construction method from the lower end portion. At this time, since the spud 3 keeps being driven into the bottom of the water, the hull 2 moves stably.

  Subsequently, the inclined spud 3 is lifted as shown in FIG. 9, the cylinder means 12 is operated so as to be in an upright state, and the lower end portion of the spud 3 is driven into the seabed. Is positioned at the stop position in a stable state (see FIG. 6).

  By repeating this, the hull can be moved as if walking. There are a total of four on the left and right strings side of the tip of the anchor, and a total of four are arranged, so by devising the spud to be operated, the hull can be moved in any direction around the entire circumference It becomes like this.

  Further, if the movement amount of the hull 2 is increased, for example, as shown in FIG. 10, the upper end of the spud 3 on the rear side in the traveling direction is inclined so as to be on the front side in the traveling direction, while the spud 3 on the front side in the traveling direction. Is tilted so that its lower part is on the front side in the direction of travel. Then, as shown in FIG. 11, the spud 3 on the front side in the traveling direction is driven into the bottom of the water, and in a stable state, the spud 3 on the rear side in the traveling direction is pulled out as shown in FIG. The hull 2 is moved in a desired traveling direction by being in an upright state in the vertical direction.

  Thereafter, the spud 3 on the rear side in the traveling direction is brought into a vertically upright state (see FIG. 13) and driven into the seabed, so that the hull 2 is stopped at that position in a stable state (see FIG. 6). ). In this way, the amount of movement of the spud 3 per extraction can be made larger than in the cases shown in FIGS.

  Thus, when the hull 2 is moved to a predetermined position, the four hydraulic cylinders 12 for each spud 3 are sequentially expanded and contracted, and two or three spuds 3 are driven into the seabed. Thus, since the remaining spud 3 is moved while being tilted in the traveling direction, stable movement can be realized.

  In the above-described embodiment, four cylinder means 12 (hydraulic cylinders) are used to incline the spud 3. However, the number of hydraulic cylinders may be increased, and wires may be used instead of the hydraulic cylinders. It is also possible to tilt the spud by using the wire and pulling it.

DESCRIPTION OF SYMBOLS 1 Work ship 2 Hull 2a Through hole 3 Spud 4 Spud casing 5 Oscillating device 6 Elevating device 7 Upper support means 8 Lower support means 12 Cylinder means 21 Rack 22 Drive gear (pinion)

Claims (6)

A hull moving / mooring device for a work ship, wherein a plurality of spuds are swingable with a swinging device and can be lifted with a lifting device with respect to the hull,
The spud is provided at intervals around the hull,
A hull moving and mooring device for a work ship, wherein all of the spuds are movable up and down and swingable.   2. The hull moving and mooring device for a work ship according to claim 1, wherein a total of four spuds are provided on the left and right chord sides of the tip and on the left and right chord sides of the tip, respectively.   Each of the spuds is incorporated in a spud casing together with the swinging device and the lifting device, and the spud casing is disposed in a vertical through hole provided in the hull. 2. Ship hull moving and mooring device for work boats. The swing device has an upper support means and a lower support means,
2. Each of the spuds is supported such that the support portion by the upper support means is tiltable in any direction of the entire circumference, with the support portion by the lower support means as the center of rotation. A hull moving / mooring device for a work ship according to any one of the above. The upper support means includes a support member having a central portion that supports the spud so as to be tiltable via a spherical sleeve, and four projecting shaft portions that project radially outward from the central portion at equal angular intervals; While comprising a guide member that engages the protruding shaft portion so as to be movable in the axial direction, and cylinder means that displaces the central portion in any direction of the entire circumference,
5. The hull moving and mooring device for a work ship according to claim 4, wherein the lower support means is configured to support the spud so as to be tilted to a fixed position via a spherical sleeve.   The lifting device includes a rack provided along the longitudinal direction of the spud, a pinion that meshes with the rack in a rotatable manner, and a drive unit that rotationally drives the pinion. The hull moving / mooring device for a work ship according to any one of 1 to 5.

Images