JP4861301B2 - Rope guide device for tugboat - Google Patents

Description

  The present invention relates to a rope guide device for guiding a rope for towing and towing from a ship such as a tugboat or the like when the rope is extended or retracted.

In general, tow ropes are used when towing other ships on a tugboat or the like. Such a tow rope is wound around and held by a winch arranged on a tugboat, and is pulled out and retracted through a rope guide device arranged in front of the winch. In addition, before the towing work is performed, a preparation work is performed in which one end of the rope drawn out from the winch is delivered to the towed ship and fixed. Since the rope drawn out from the winch hangs down between the winch and the rope guide device, it must be pulled out from the bow side of the rope guide device. However, this work is extremely laborious because the weight of the drawn rope increases. there were. With regard to the technology for improving the rope guide mechanism of such a rope guide device, for example, in Patent Document 1, a rope that is provided on a gantry fixed on a ship and protrudes into a lower half of a vertically long insertion hole that guides the rope is moved to the left and right. There is described a rope guide device provided with a pair of drive rollers sandwiched from both sides and an openable rope mounting table on which a rope that is provided above each drive roller and passes through an upper portion of an insertion hole is placed.
Japanese Patent Laid-Open No. 10-120299

  However, in the rope guide device described in Patent Document 1, the drive roller that holds the rope rotates about the vertical axis that is erected on the frame of the ship as the rotation axis. When the rope pulling angle in the height direction becomes deep, the frictional force applied to the driving roller becomes small, and there is a problem that the rope feeding operation may not be performed effectively.

  Furthermore, in the device described in the above publication, when two tow ropes are simultaneously fed out from the rope guide device to perform the towing operation, it is difficult to control the movement of each rope independently. It was dangerous because the work of pulling out one of each rope was done, and it was not a countermeasure for labor saving. In addition, there is a problem in stably and safely controlling a towing operation that tends to be influenced by weather conditions and requires delicate rope control.

  The present invention has been made in view of such circumstances, and can reliably carry out a tow rope feeding operation, and can control each of the two ropes to save labor and stably perform offshore work. An object of the present invention is to provide a rope guide device that can be performed safely.

(1) A rope guide device for a tugboat according to the present invention has been made for the purpose of solving the above-mentioned problems. A housing is formed between a pair of left and right columns fixed on a deck of a hull, and is provided on the housing. In the rope guide device in a tugboat in which a roller mechanism facing the roller through a guide port for inserting the tow rope and sandwiching the tow rope and feeding out the tow rope in one direction is housed in the housing. The roller mechanism includes a pair of upper and lower upper and lower shafts arranged in a horizontal direction, upper left and right rollers rotatably attached to the upper shaft, and lower left and right rollers rotatably attached to the lower shaft, respectively. And a roller driving unit for independently rotating the upper left and right rollers and the lower left and right rollers, and a vertical direction with respect to each other. Coupled to the upper shaft and lower shaft are disposed at predetermined intervals anda moving portion between the support shaft to move in the vertical approaching direction and spacing direction from each other between the upper shaft and lower shaft, the The support shaft moving portion includes a slide plate provided as a pair on the left and right sides in the housing, and a support member fixed to the slide plate, and the upper shaft and the lower shaft move vertically along the slide plate. It is configured to be movable, and one end of a link member is connected to both ends of the upper shaft and the lower shaft via connecting pins, and the other end side of the link member connected to the upper shaft is connected to the lower shaft. A link member is connected to the other end side of the link member so that the left and right legs can be freely opened, and the connection pin is slidably fitted in the slide hole of the support member in the horizontal direction, and is supported between the columns. The lower part fixed on the gantry The by expanding and contracting the linked cylinder, wherein the upper shaft and lower shaft by opening and closing operation, and freely set the distance between the same upper shaft and a lower shaft, the upper left roller and the lower left roller a first The upper right roller and the lower right roller are used as a second roller set, and one or two tow ropes are sandwiched from above and below via the first and second roller sets. It is configured to allow feeding.
(2) The rope guide device for a tugboat according to the present invention is characterized in that, in (1), the upper surface of the housing is configured to be openable and closable.

  According to the present invention, the upper left and right rollers and the lower left and right rollers are provided on a pair of upper and lower upper shafts and lower shafts that are horizontally disposed, respectively, and the upper left and right rollers and the lower left and right rollers can be independently rotated. In addition, since one or two tow ropes are clamped and fed out so as to be movable vertically between the upper shaft and the lower shaft, it is possible to reliably perform a delicate rope operation in towing work. In addition, each of the two ropes can be independently controlled to perform the work stably and safely.

  The rope guide device in the tugboat according to the present embodiment forms a housing between a pair of left and right columns fixed on the deck of the hull, with a roller facing a guide port through which the tow rope provided in the housing is inserted. In the rope guide device in a tugboat in which the tow rope is clamped and the roller mechanism for feeding out the tow rope in one direction is housed in the housing, the roller mechanism is supported at both left and right ends by the support. A pair of upper and lower upper and lower shafts, upper left and right rollers rotatably attached to the upper shaft, lower left and right rollers rotatably attached to the lower shaft, upper left and right rollers and lower A roller drive unit that drives the left and right rollers to rotate independently from each other and a predetermined interval in the vertical direction. A support-shaft moving section that is connected to the upper shaft and the lower shaft and moves between the upper shaft and the lower shaft in the vertically approaching and separating directions, and the upper left roller and the lower left roller A first roller set, the upper right roller and the lower right roller as a second roller set, and one or two tow ropes from above and below through the first and second roller sets. It is configured so that it can be clamped and fed out.

  With this configuration, it is possible to hold the tow rope up and down by the upper roller and the lower roller from the up and down direction, and to reliably carry out the rope feeding operation, and to control each of the two ropes in a stable and tough manner. It can be done safely. That is, the rope guide device is provided with a pair of driving rollers provided so as to be able to project from the tow rope by moving from the vertical direction at the guide port of the tow rope formed at the center of the housing, The roller is rotated while the rope is clamped by the driving roller. As a result, even if the rope feed angle in the height direction between the tugboat and the towed vessel becomes deeper or fluctuates greatly during towing work, the friction force between the driving roller and the rope is maintained to ensure the rope. Can be operated.

  In addition, when winding the tow work and the tow rope with the winch provided on the deck of the hull, the upper and lower roll intervals are widened while maintaining the center position of the upper and lower pairs of rollers by the moving part between the support shafts. By retracting, the rope can be set in a state where it can be freely operated. In addition, the first and second roll sets that can control the left and right two towing ropes can be controlled independently, so that they are complicated and subtle to cope with fluctuations in work forms and weather conditions. It is possible to safely and reliably realize towing work that requires proper rope control.

  The tugboat has a function to move to a predetermined position by towing other ships and structures on the water via a tow rope, or by contacting and pressing the hulls through a fender such as an old tire. Included are small-scale tens of tons that are used to assist the ship to berth and berth on the pier to large-scale tens of thousands of tons that are engaged in offshore work. It is. This tugboat is usually equipped with a torque-oriented engine that is more powerful than a ship of the same size because speed is not important.

  On the deck of the tugboat, a housing which is provided between a pair of left and right columns and serves as a main frame of the rope guide device, and a winch device for winding the tow rope on the back side of the rope guide device are arranged. A guide port for inserting the tow rope is provided in the center of the housing, and a locking member provided on the bow side in a state in which the tow rope of a predetermined length is pulled out from the guide port in advance during the towing operation. It is designed to be wound around.

  The roller mechanism has a tow rope pull-out function and a guide support function built in the housing of the rope guide device, and is supported at both the left and right ends between columns provided on the deck and through the housing. Upper and lower shafts, upper left and right rollers and lower left and right rollers rotatably attached to the upper and lower shafts, roller driving units for independently driving these four rollers, and upper and lower shafts And a support inter-shaft moving section that moves the shafts close to and away from each other. In addition, the roller mechanism disposed in the housing is configured as an integrated unit member, and the roller mechanism can be detached by attaching the unit to the housing with a locking member such as a hanging member or a hook. As a result, it is possible to further improve the maintainability of the rope guide device while saving labor and labor of towing work.

  Each of the upper shaft and the lower shaft is a shaft member arranged in the horizontal direction, and both end sides thereof are supported by a pair of left and right support columns erected on the deck or a support member in the housing. A pair of upper left and right rollers and lower left and right rollers are rotatably attached to each other.

  The roller drive unit includes a drive system for connecting the upper left and right rollers and the lower left and right rollers via a chain and gears to independently rotate them, and a hydraulic motor for driving them.

  In this way, the upper left and right rollers and the lower left and right rollers are rotated at a predetermined rotational speed via the corresponding roller driving portions, so that the tow rope inserted from the guide port provided in the center of the housing faces the outside of the ship. Can be sent out.

  The inter-support shaft moving unit is a device that includes a link mechanism for moving the gap between the upper shaft and the lower shaft close to and away from each other, and a hydraulic cylinder or an electric motor that drives the link mechanism. As in the housing.

  In the rope guide device for a tugboat of this embodiment, the upper surface and the front and rear surfaces of the housing can be configured to be openable and closable. As a result, maintenance work relating to the roller drive unit and the support shaft moving unit in the housing that is performed on a daily basis and on a regular basis can be facilitated, and the rope guide device can be maintained in a healthy state without any troubles. It is possible to prevent troubles that do not occur and reduce maintenance costs in the long term.

  The housing can be opened and closed freely, for example, a steel housing with a rectangular opening and a door is attached to one side via a hinge, and bolts, nuts, hooks, etc. The thing which attaches an opening-and-closing lid to an opening part via a stop member is included.

  Furthermore, in the rope guide device for a tugboat of this embodiment, the lower left and right rollers gradually increase in diameter toward the center side of the lower shaft, and the surface sandwiching the tow rope can be tapered. As a result, the tow rope held by the roller pair arranged in the vertical direction can be moved toward the center of the shaft as the roll rotates, so that the tow rope can be operated stably. In addition, since the gap between the upper and lower rollers in the central portion of the shaft is narrowed, it is possible to prevent the two right and left ropes from coming into contact with each other.

  Next, embodiments of the present invention will be described with reference to the accompanying drawings. FIG. 1 is a front view and a plan view of a tugboat in which a rope guide device in a tugboat according to an embodiment of the present invention is arranged on its deck, and FIG. 2 shows a rope holding state in the rope guide device. It is a front view and FIG. 3 is a front view which shows the rope open state.

  As shown in FIG. 1, a rope guide device 10 in a tugboat according to an embodiment of the present invention is disposed between a pair of left and right columns 12, 12 a erected on a deck on the bow side of a tugboat 11. It is provided in the housing 10a. A pair of right and left winch winches 13 and 13a are provided behind the rope guide device 10 at predetermined intervals, and the tow rope 14 is sent out by operating the rope guide device 10 and the winches 13 and 13a. Involvement operation is made. Note that a rope guide 15 is disposed between the rope guide device 10 and the winch 13 for winding the rope to prevent the two tow ropes 14 operated at the same time from being entangled with each other.

  As shown in FIGS. 2 and 3, the roller mechanism of the rope guide device 10 is accommodated in a housing 10 a between columns 12 and 12 a erected on the deck of the tugboat 11. As will be described later, this roller mechanism holds a tow rope 14 in the vertical direction and independently rotates a roller pair that rotates, and reduces the vertical distance between these roller pairs. And a support shaft moving part.

  An upper shaft 17 and a lower shaft 18 are provided between the support columns 12 and 12a formed in a gate shape or between the left and right support frames disposed in the housing 10a, and both end sides thereof are directly or indirectly. In addition to being supported, the vertical distance between the upper shaft 17 and the lower shaft 18 can be set via a support-shaft moving portion described later. An upper left roller 17a and an upper right roller 17b are rotatably attached to the upper shaft 17, and a lower left roller 18a and a lower right roller 18b are rotatably attached to the lower shaft 18, respectively.

  As shown in FIG. 5, two upper shafts 17 and 17 'are arranged in parallel in the horizontal direction between the support columns 12 and 12a, and an upper left roller 17a and an upper right roller 17b are attached to each of them. By increasing the number of support points where the tow rope 14 and the roller come into contact with each other, the rope work can be performed more stably. In addition, it has become possible to easily wind the rope with less biting of the rope wound around the winch than the conventional type.

  In the present embodiment, the two upper shafts 17 and 17 ′ are arranged in parallel. However, as in the case of the lower shaft 18, it may be configured by only one upper shaft. Here, since the functions and configurations of the upper shafts 17 and 17 'are substantially the same, in the following description, the upper shaft 17 will be described, and the description related to the other upper shaft 17' will be omitted.

  Each of the upper left roller 17a, upper right roller 17b, lower left roller 17a, and lower right roller 17b has a roller surface covered with a sheet-like material such as wear-resistant rubber. The upper left roller 17a and the upper right roller 17b are each formed in a cylindrical shape having a uniform flat outer diameter.

  On the other hand, the roller surfaces sandwiching the tow ropes 14 and 14a of the lower left roller 18a and the lower right roller 18b arranged to face the upper left roller 17a and the upper right roller 17b face the center side of the lower shaft 18, respectively. The taper is gradually expanded in diameter. By forming the tapered surfaces on the lower left roller 18a and the lower right roller 18b in this way, the tow ropes 14 and 14a sandwiched between the upper and lower rollers can be held from the center of the shaft while the rollers are rotating.

  The upper left roller 17a, upper right roller 17b, lower left roller 18a, and lower right roller 18b are respectively provided with motors 17c, 17d, 18c, and 18d as roller drive units for driving these independently. As shown in FIG. 5, each roller can be rotated at a predetermined rotational speed via a chain or gear. In this embodiment, the upper left roller 17a and the lower left roller 18a are driven synchronously by the same mechanical line configuration, and the upper right roller 17b and the lower right roller 18b are driven simultaneously on the same line. Yes.

  The inter-support shaft moving unit includes a hydraulic cylinder that is a driving source thereof, a link mechanism that converts the vertical expansion and contraction movement of the cylinder into a horizontal movement, and the like. For example, the upper shaft 17 and the lower shaft 18 are supported via two left and right connecting pins 19 provided at both ends, and the connecting pins 19 are connected to one end side of the link member 19a. The other end sides of the two link members 19a are connected to each other by a connecting pin 19b so that the legs can be freely opened, and the connecting pin 19b is fitted into a slide hole of the support member 19c so as to be slidable in the horizontal direction. The support member 19c is supported by fixing one end thereof to slide plates 21 and 21a provided as a pair on the left and right sides of the housing 10a.

  In this way, the cylinder 20 fixed on the support frame 12c is expanded and contracted to convert the vertical movement into the horizontal movement by the link mechanism. That is, the collar 22 moving on the slide plates 21 and 21a serves as a guide to slide the connecting pin 19b inserted into the slide hole of the support member 19c. In this way, the interval between the upper shaft 17 and the lower shaft 18 is set freely. Even by such an opening / closing operation of the upper shaft 17 and the lower shaft 18, the center position of the vertical interval is held constant by the link mechanism, so that the operability in the rope work is not hindered. For this reason, the tow ropes 14 and 14a can be reliably and stably operated, and the manpower saving property can be improved.

  As shown in the figure, the housing 10a that houses the roller mechanism has flat-plate-like opening / closing portions 10c and 10d attached to the upper surface and side surfaces of the housing 10a via locking members such as bolts 10e and hooks. Daily maintenance work of the rope guide device 10 arranged in the tugboat 11 can be easily performed. This makes it possible to save labor and labor in towing work. Furthermore, when the roller mechanism is structured to be detachable from the housing 10a, the roller mechanism can be easily replaced by removing the opening / closing part 10c provided on the upper surface of the housing 10a. Moreover, when performing daily inspection etc., it can also carry out by opening the maintenance lid | cover 10h provided in the opening-and-closing part 10c which can be opened and closed easily. The opening / closing part 10d is an opening / closing member for maintenance related to the cylinder 20. Further, in order to perform maintenance of the connecting pin 19b and the support member 19c constituting the link mechanism, the link maintenance portions 10f and 10g are opened and closed on both the left and right sides of the guide port 10b formed at the front center of the housing 10a and the center of the rear surface, respectively. It is provided as possible. That is, the link maintenance parts 10f and 1g are disposed on the front surface and the rear surface of the housing 10a, respectively.

  As shown in FIG. 4, the tow ropes 14 and 14a are inserted from the guide port 10b provided in the center of the housing 10a, and the rope is sent out and pulled out through the roller mechanism. The maintenance work of the roller mechanism is indispensable. In this way, safe and comfortable towing operations can be performed at all times, and the long-term total cost for maintenance is reduced.

  When the rope guide device 10 configured as described above is used, as shown in FIGS. 3 and 5B, the upper shaft 17 and the lower shaft 18 are driven to reduce the cylinder 20 of the moving portion between the support shafts. The towing ropes 14 and 14a are inserted through the guide port 10b at the center of the housing 10a in a state where the vertical interval is widened.

  Next, by driving the cylinder 20 to extend, the upper and lower rollers are brought into contact with the tow ropes 14 and 14a as shown in FIGS. As a result, the tow ropes 14 and 14a are sandwiched between the rollers having rubber films, so that the motors 17c, 17d, 18c and 18d are rotated in a predetermined direction, and the tow ropes 14 and 14a are turned to the bow of the tugboat 11. Can be paid out from the side.

  Thus, after the tow ropes 14 and 14a are drawn out to a predetermined length, the cylinder 20 of the support shaft moving part is driven to open the upper and lower rollers, and the tow ropes 14 and 14a are winches as shown in FIG. Pull in 13 to operate. As a result, two ropes can be fed out by the same rope guide device 10. In this case, the upper and lower roller pairs act in the vertical direction with respect to the tow ropes 14 and 14a, so that even if the vertical rope towing angle stretched between the towed ship and the tugboat 11 changes, the rope There is no escape and can respond to changes.

  As described above, the rope guide device for a tugboat according to the present invention independently drives the upper left and right rollers and the lower left and right rollers provided on the upper shaft and the lower shaft, respectively, and mutually connects the upper shaft and the lower shaft. The gist of the invention is to clamp and feed one or two tow ropes by allowing them to move vertically. As a result, the rope work in towing work can be performed reliably, and each of the two ropes can be controlled independently to perform the work stably and safely, and the rope guide device also has excellent manpower saving. It can be.

  The present invention can be applied without being limited to the specific configuration described above. For example, in the present embodiment, the case where two tow ropes are operated has been described in detail, but one tow rope can also be operated using only one side of a pair of left and right rollers. In addition, the four motors 17c, 17d, 18c, and 18d that serve as roller drive units are operated in cooperation with each other by computer control to realize a delicate rope work, or the upper roller group and the lower roller group are mechanically linked. It is also possible to perform a rotation operation in synchronization with each other.

It is the front view and top view of a tugboat in which the rope guide device in the tugboat concerning one embodiment of the present invention is arranged. It is a front view which shows the rope clamping state of the rope guide apparatus. It is a front view which shows the rope open state of the rope guide apparatus. It is a perspective view which shows the housing of the rope guide apparatus. It is a side view which shows the operation state of the rope guide apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Rope guide apparatus in tugboat 10a Housing 10c, 10d Opening and closing part 10b Guide port 10e Bolt 10f, 10g Link maintenance cover 10h Maintenance cover 11 Tug boat 12, 12a Support column 12c Support frame 13, 13a Winch 14, 14a Towing rope 15 Rope Guide 17, 17 'Upper shaft 17a Upper left roller 17b Upper right roller 17c, 17d Motor 18 Lower shaft 18a Lower left roller 18b Lower right roller 18c, 18d Motor 19 Connecting pin 19a Link member 19b Connecting pin 19c Support member 20 Cylinder 21, 21a Slide plate 22 Color

Claims (2)

A housing is formed between a pair of left and right struts fixed on the deck of the hull, and the tow rope is sandwiched by a roller facing a guide port through which the tow rope provided in the housing is inserted. In a rope guide device in a tugboat in which a roller mechanism that feeds out one direction is housed in the housing,
The roller mechanism is
A pair of upper and lower upper and lower shafts arranged in a horizontal direction;
Upper left and right rollers respectively rotatably attached to the upper shaft;
Lower left and right rollers respectively rotatably attached to the lower shaft;
A roller driving section for independently rotating the upper left and right rollers and the lower left and right rollers;
A support inter-shaft moving section that is connected to the upper shaft and the lower shaft that are disposed at a predetermined interval in the vertical direction and moves between the upper shaft and the lower shaft in the vertical proximity direction and the separation direction. Equipped,
The support shaft moving part includes a slide plate provided as a pair on the left and right sides in the housing, and a support member fixed to the slide plate.
The upper shaft and the lower shaft are configured to be vertically movable along the slide plate,
One end of a link member is connected to both ends of the upper shaft and the lower shaft via connecting pins,
The other end side of the link member connected to the upper shaft and the other end side of the link member connected to the lower shaft are connected to each other by a connecting pin so that the left and right legs can be freely opened.
The connecting pin is fitted in the slide hole of the support member so as to be slidable in the horizontal direction,
The upper and lower shafts can be opened and closed by expanding and contracting the cylinder fixed on the support frame installed between the columns and connected to the lower shaft, and the distance between the upper and lower shafts can be set freely. age,
The upper left roller and the lower left roller are used as a first roller set, the upper right roller and the lower right roller are used as a second roller set, and one or two towing ropes are used as the first and second tow ropes. A rope guide device for a tugboat characterized in that it can be fed out by being sandwiched from above and below via two roller sets.   The rope guide device for a tugboat according to claim 1, wherein the upper surface of the housing is configured to be openable and closable.

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