JPS598594B2 - gangway device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a ship's gangway device, and more particularly to an upper landing main body supported on a ship hull so that it can be raised and lowered, a turntable supported by the upper landing main body, and a turntable supported on the upper landing main body. The main body of the upper landing and the turntable are laid down and the gangway is swung downward to be in use, while the gantry is swung upward. In addition, in a type of gangway device in which the entire armada is erected around the axis of raising and lowering of the upper landing main body to be in a retracted state, improvements have been made in the raising and retracting of the gangway relative to the ship's hull and the mechanism for swinging outward from the gunwale. It is something.

As is well known, in the case of a ship's gangway, two operations are essential: a swing operation in which the gangway is raised or lowered from an upper landing provided on the ship's hull, and an operation in which the entire gangway, including the landing and the gangway, is retracted onto the ship's hull or extended out of the ship. Various techniques have been proposed in the past.

In particular, although various proposals have been made regarding a mechanism for swinging out the entire structure, including the landing and gangway, in a state connected to the ship's hull, it is still difficult to ensure a simple mechanism, stable operation, and smooth operation. At present, nothing that can be easily drawn out and stored has yet been developed.

In particular, the present invention provides a davit for a gangway by pivotally mounting a swinging arm pivotally attached to the davit and a boom link having one end pivotally attached to the swinging arm on the hull with different link lengths. To provide a gangway device capable of holding the gangway in a more stable posture even though the swinging amount of the gangway is increased, and also capable of being stored more compactly in an upright storage position when the whole is retracted to the hull side. With the goal.

Preferred embodiments of the present invention will be described in detail below with reference to the drawings.

In the drawings, particularly in FIG. 1, 1 indicates a ship's hull and 2 indicates a quay.

Reference numeral 3 denotes an upper landing main body supported on the side of the hull 1 so as to be able to raise and lower the upper landing.

The upper landing body 3 is provided so that it does not rotate any further when it is protruded from the side and laid down in a horizontal position, and this means is not shown.

Reference numeral 6 denotes a turntable, which is supported by the upper landing body 3 and is rotatable about the vertical axis on the body 3.

Reference numeral 7 denotes a gangway of a known structure, one end, that is, the base end thereof, is pivotally connected to one side circumferential wall of the turntable 6 at a pivot 8. Therefore, the gangway 7 is bent with respect to the turntable 6 about the pivot 8. The free end of the gangway 7 is provided with a lower landing main body 9.

Reference numeral 10 denotes a davit for suspending the gangway 7, and this davit 10 is detachably attached to the hull 1 at a position unevenly located on the other end side of the gangway 7, that is, on the free end side with respect to the upper landing main body 3. It is located as.

An engaging body 11 indicated by a rod is provided at the base end of the davit 100.

Reference numeral 13 denotes a pair of support members provided on the side of the hull 1, which have hooks 12 that are open on the side on the same axis as the pivot 5 of the upper landing body 3, and the engaging body 11 is engaged with and disengaged from the hook 12. It is free.

Note that the engaging body 11 may be formed into a hook shape, and the hook 12 of the support member 13 may be formed as a rod.

The davit 10 is equipped with drive means consisting of a prime mover 14, preferably an electric motor, and a differential gear mechanism 15 actuated thereby.

The input shaft of the differential gear mechanism 15 is connected to the prime mover 14, and a pair of output shafts 16 and 17 protrude from both sides of the davit 10.

Each output shaft 16, 17 has a set of two first winding drums 18.
a, 18b and second winding drums 19a, 19b are respectively attached.

Note that the differential gear mechanism 15 drives the output shaft with the smaller load when there is unevenness in the loads on the pair of output shafts 16 and 17, as typified by the differential gear of an automobile. Since both output shafts have the characteristic of being driven together when both loads are equal, this characteristic is effectively and appropriately utilized.

In this embodiment, three wires 20, 21, 22 constitute a response linking means together with a driving means consisting of a prime mover 14, a differential gear mechanism 15, etc., and the first wire 20 has one end connected to the outer side on the output shaft 16. The first winding is fixed to the additional drum 18a and wound there, and is wound around the second guide sheave 24 provided on the hull side at the free end side of the gangway 7 via the first guide sheave 23 provided on the davit 10. Davit 10
The third guide sheave 25 is provided in parallel with the first guide sheave 23, and the fourth guide sheave 26 is provided on the davit proximal end side from the sheave 25. After being wound around the fifth guide sheave 27 provided on the outside of the hull, the winding material is wound around the inner winding drum 18b on the output shaft 16 via the two direction changing guide sheaves 28 and 29 provided on the davit 10. It is fixed.

That is, the first wire 20 is used to suspend the gangway 7 when the gangway 7 is swung downward on the pivot 8, and
It is used for hoisting up the gangway 7 when swinging it upward.

Furthermore, one end of the second wire 21 is fixed to the inner second winding drum 19b on the output shaft 17, and is wound around two guide sheeps 30 provided above on the hull 1.
, 31, the other end is fixed to the tip side of the dapit 10.

That is, the second wire 21 is used to make the davit 10 freely reachable from its base end, and also to swing out the davit 10 outward from the side of the hull 1 and pull it inward to the side of the ship.

Furthermore, the third wire 22 is wound around the second winding drum 19a on the outer side of the output shaft 17 with one end fixed thereto, and a guide sheave 32 provided above the hull 1 and at a spaced apart position. 33 and the other end is fixed to one side of the turntable 6.

That is, this third wire 22 is used to raise and lower the upper landing main body 3 and the like around the pivot shaft 5.

Referring to FIG. 2 and subsequent figures, details of the swinging mechanism 34, which is the most significant feature of the present invention, are illustrated.

The swinging mechanism 34 mainly includes a support stand 35 placed and fixed on the side of the hull 1, a pair of boom links 36 and 37, each consisting of two boom links with one end pivotally attached to the support stand 35, and one end of which is attached to the tip of the davit 10. The boom link 36 is pivotally attached to the other end.
, 37, a pair of left and right swinging arms 38 whose other ends are pivotally connected.
It is mainly composed of.

The support stand 35 has a pair of left and right support legs 39 erected, and each of the support legs 39 has one end of a boom link 36, 370 attached to a horizontal axis 40 at a location where the inside side of the gunwale is high and the outside of the gunwale side is low.
, 41, and includes support portions 39A and 39B that are pivotally connected at 41.
Further, the support member 13 is provided between a pair of left and right support legs 39.

Note that since the davit 10 is housed and erected between the pair of left and right support legs 39, the pair of left and right support legs 39 are erected with an interval greater than the width of the davit 10 including the winding drum.

Boom links 36 for pairs. One end of the boom link 37 is pivotally attached to the support parts 39A and 39B by horizontal shafts 40 and 41, respectively, so that it can be raised and lowered, but in this case, the boom link 36 inside the hull
On the other hand, the boom link 37 on the outside of the hull has a long link length, and the boom link 37 on the outside of the hull has a generally L-shaped side surface bent at a bending portion 37A at the lower end side.

One end of the pair of left and right swinging arms 38 protrudes from the tip of the davit 10 across the davit 10. The support rod 42 is pivotally connected at both ends thereof, and is foldable by a hinge connector 43 in the middle of the swinging arm 38 and on the upper side of the tip side, and a space is provided on the lower side of the other end. The other ends of the boom links 36 and 37 are connected by pivots 46 and 47 to brackets 44 and 45 provided at the same angle, and in this case, the pivot 46 on the shorter link length is pivoted to the bracket 44 with some play. ing.

Reference numeral 48 denotes a stay wire for parallel maintenance, one end of which is fixed to the tip on the side of the davit 10, stretched over a rotating sheave 49 and a fixed sheave 50 provided on the outer boom link 37, and the other end is attached to the base of the davit 10. It is fixed on the end side, as shown in Figure 1.
As shown in FIG. 3, a pair of left and right holes are provided.

In addition, in the figures, reference numerals 51 shown in FIGS. 2 and 4 are a pair of left and right swing-out limiters, and in the embodiment, a chain link is hung from a fixed support leg 39 and a boom link 36. There is.

Further, in the embodiment, the boom links 36, 37 and swing arm 38 are constructed of hollow box-shaped members.

To explain the operation according to the embodiment of the present invention configured as above, first, the case of retracting from the use position with the maximum swing shown in FIGS. 1 and 4 will be described in detail.

When the prime mover 14 is turned ON and the differential gear mechanism 15 is driven, the output shafts 16 and 17 of the differential gear mechanism 15 are rotationally driven.

In each output shaft 16, 17, the load on the first output shaft 16 is small and the load on the second output shaft 17 is small, so the first winding drums 18a, 18b are rotationally driven in the winding direction. Second winding drum 1 9 a t 1
9b remains stopped.

Therefore, the first wire 20 is connected to the first winding drum 1 8 here.
A, 18b causes the gunwale 7, which was pointing downward, to be lifted upwards about the pivot 8, and when this is lifted, the first wire 20 is connected to both sides of the gunwale 70 and stretched. Because of this, it is lifted without swinging or being swung, and finally comes into contact with the lower surface of the davit 10.

Then, since the loads on each output shaft 16 and 17 become equal, both output shafts 16 and 17 are both rotationally driven.
The second winding drum 19 along with the winding drums 18a and 18b
a, 1 9b is rotationally driven in the winding direction, and the whole is connected to the hull 1 via the third wire 22 stretched between the upper landing main body 3 side and the hull 1, and the second wire 21 stretched between the davit 10 and the hull 1. drawn to the side.

During this pulling, the gangway 7 is pivotally attached to the turntable 6, which rotates around the longitudinal axis, by the pivot 8, so it is pulled toward the hull 1 together with the turntable 6, while the davits 10 are moved on the left and right sides. Since the pair of swinging arms 38 are connected to the hull 1 via boom links 36 and 37 having different link lengths and are held horizontally via the stay wire 48, the swinging arms 38 are gradually moved relative to the davit 10. While standing upright, the davit 10 is pulled horizontally towards the hull 1, and as shown in FIG. The davit 10 is engaged with the engagement hook 13 of the support member 12 provided on the hull 1, and the davit 10 is housed between the pair of left and right support legs 39 as shown in the third figure.

Continuing further from the position shown in Figures 2 and 3, the prime mover 1
4, the upper landing main body 3, turntable 6, and gangway 7 are erected around the pivot 5, and the davit 10 is erected around the engagement hook 13 of the support member 12.

In the process of standing up, the pair of left and right swinging arms 38 are pivotally connected in the middle in the longitudinal direction by a hinge connector 43, so that the pair of right and left swing arms 38 are bent at the bending point using the connector 43. Swinging arm 38 and boom link 36,3
The angle formed by 7 gradually became smaller and finally davit 10
When the machine is erected in a vertical position, the davit 10, swing arm 38, boom links 36, 37 are connected as shown by the chain lines in Fig.
are stored and held in a superimposed manner.

Next, in order to shift from the stored position to the operating position shown by the chain line in FIG. With such a weight, the davit 10 is tilted counterclockwise in FIG.
8. The boom links 36 and 37 are rotated outward to the side and held in the normal usage position shown in FIG. 2, and the davit 10 is suspended in a horizontal position via the stay wire 48, and , swing arm 38, boom link 36.
It is held on the hull 1 side in cooperation with 37.

In the normal usage state shown in FIG. 2, the weight of the gangway 7, davit 10, etc. creates a force that swings them toward the quay 2.

Then, the davit 10 has its engagement body 11 connected to the support member 12.
It is detached from the boom link 36, and is swung out to the side while maintaining a horizontal position by the stay wire 48. As a result, the angle of the swinging arm 38 with respect to the davit 10 is reduced, and the swinging arm 38 and the boom link 36. The angle formed by 37 gradually becomes a dog, and boom links 36, 3
70 Since the link lengths are different, the davit 10 is swung out in a horizontal position to a position far away from the hull 1 as shown in FIG. 37 to ensure that the ball is swung out to the extent of the swung-out amount limiter 51.

That is, to explain once again the behavior up to the maximum swinging position shown by the solid line in FIGS. 1 and 4, the boom links 36 and 37 are swung outward from the hull around pivot points 40 and 41 on the hull side. At this time, each inner boom link 36 is shorter than each outer boom link 37, and one end side of the swinging arm 38 is pivotally attached 46, 47 to the other ends of the boom links 36, 37 having different link lengths. Since the davit 10 is supported on the other end side of the swinging arm 38, the boom link 37 tends to push up the davit 10 side,
The boom link 36 tends to push down the side opposite to the davit 10 around the pivot 47, and the swinging arm 38 is tilted downward with the hull side at the top and toward the outside of the hull to allow the boom links 36 and 37 to swing. Even though the swing angle is small, the davit 10 is swung out greatly via the swinging arm 38.

At this time, the gangway 7 is swung out together with the davit 10 by the rotation of the turntable 6, and the first
As the wire 20 is let out, it is swung downward about the pivot 8, and the lower landing main body 9 is swung until it comes into contact with the quay.

In the maximum swing-out position shown by the solid line in FIGS. 1 and 4, the davit 10 is located directly above the gangway T, and the davit 10 is securely attached to the hull using the swing-out arm 38 and boom links 36, 37. In addition to effectively maintaining the horizontal position of the davit 10 in cooperation with the stay wire 48, the boom link 37 is held on the fixed side by the restricting body 51. Therefore, even though the davit 10 has swung out greatly, its movement in and out and in the longitudinal direction of the ship's hull 1 is definitely restrained, and the davit 10 whose movement has been restrained in this way is Since the gunwale 7 is suspended on both sides by one wire 20, even if a passenger or the like walks on the gunwale 7, the gunwale 7 does not sway or sway, ensuring extremely safe boarding and alighting.

The present invention is as described above, and even if there is a relatively small distance between the hull and the quay, the davit can be held on the hull side by a so-called swinging link means consisting of a swinging arm and a boom link, and the davit can be held here. Even if the boat is swung out, it can be restrained from swinging forward, backward, left or right, and since the gangway is suspended from this davit, boarding and alighting using the gangway is extremely safe.

Furthermore, the boom link has different link lengths, with the front and rear inner boom links being short and the front and rear outer boom links being long, and one end of the swinging arm is pivotally attached to each tip of the boom link, Since the davit is attached to the other end of the swinging arm, in order to swing the davit out of the hull, the outer boom link pushes the swinging arm out of the hull, while the inner boom link pushes the swinging arm out. Since the hull side tends to be pushed down, in other words, the davit side tends to be pushed up, the davit can be swung out a lot even though the swing angle of the boom link is small, and this swung out state is It has the advantage of being able to maintain a stable posture via the swinging arm that is tilted downward toward the outside of the hull.

In addition, the swinging arm maintains an engaged state when it is swung out to the outside of the ship at a downward slope, and has a hinge connector that is bent when it is erected and stored on the ship's side, so the entire structure including the davit and gangway is When it is retracted and stored in an upright position, the swinging arm is bent at the waist via the hinge connector, and the swinging arm can be stored in a stacked position, which has the advantage of being compact.

[BRIEF DESCRIPTION OF THE DRAWINGS] The drawings show an example of the present invention, in which FIG. 1 is a schematic perspective view of the entire swinging mechanism in the maximum swinging state, FIG. 2 is a side view of the swinging mechanism in normal operation, and FIG. 3 is a second A partial sectional view indicated by the arrow in Figure 3-3,
FIG. 4 is a side view of the swinging mechanism in FIG. 1, also showing the retracted state. 1...Hull, 3...Upper landing body, 6
...Turntable, 7...Gateway, 1
0... Davit, 14... Prime mover, 1
5...Differential gear mechanism, 18a, 18b,
19a, 19b... Winding drum, 20
, 21, 22... wire, 34... swinging mechanism, 36.37... boom link, 38
... Swinging arm, 39 ... Support leg.

Claims (1)

[Scope of Claims] 1. At least includes an upper landing main body supported on the hull so that it can be raised and lowered, a turntable supported by the upper landing main body, and a gangway having one end pivotally connected to the turntable. , while the upper landing main body and the turntable are brought into a reclining state and the gunwale is swung downward to be in use, the gunwale is swung upward and the whole is moved around the tilting axis of the upper landing main body. In a type of gangway device that stands up and is in a retracted state, a davit for the gangway is arranged unevenly on the other end side of the gangway with respect to the upper landing body,
A pair of front and rear inner boom links, each end of which is pivoted inside the hull so that it can be pivoted in the inward and outward direction of the hull, and a pair of front and rear outer boom links, each end of which is pivoted outside the hull and can be pivoted in the inward and outward direction of the hull. The outer boom link is provided with a longer link length than the inner boom link, and the other end of a swinging arm having a davit on one end is pivotally connected to the tip side of each of the inner and outer boom links. , the davit is configured to be able to be swung out to the side of the ship and retracted into the hull side via the swinging arm around each pivot point of the boom link relative to the hull; A supporting member that holds the base end and supports the davit so that it can be raised and lowered is fixedly installed on the hull, and a hinge connector that is bent at the waist when the davit is erected and stored on the hull is located halfway from the davit side of the swinging arm. A gangway apparatus, characterized in that it is provided with a response linking means for raising and lowering the davit, the swing arm, and the boom link in response to the raising and lowering operation of the entire upper landing body and the gangway. 2. The response linking means is composed of at least two winding drums that operate individually and a differential mechanism whose input shaft is connected to the prime mover, and the differential mechanism is mounted on a davit and each of its output shafts is connected to the differential mechanism. 2. The gangway device according to claim 1, wherein said winding drums are separately attached to said winding drums. 3 One winding drum is wound with a wire to be stretched on at least the gangway and the davit, and at least one of the wires stretched on the davit and the hull, and at least the wire stretched on the upper landing body and the hull. The gangway device according to claim 2, characterized in that it has the above wire and is wound on the other winding drum.