JP7376249B2 - Ship boarding and disembarkation equipment - Google Patents

Description

The present invention relates to a ship boarding and disembarking device, and more particularly to a ship boarding and disembarking device installed on a quay where small ships, particularly small passenger ships, are moored.

In response to the movement of the ship and the displacement of the ship's boarding deck due to the ebb and flow of the tide, the ship's side slope, which is cantilevered from a platform installed on the quay, is turned left and right (left and right) and elevated (moved up and down). Disembarkation devices are known (see Patent Document 1, etc.).
For example, when a small ship enters a port on a remote island, after mooring, a ship side slope is installed from the platform of the boarding/disembarking device for the small ship to the ship's hull.

Patent No. 2723444

By the way, the embarkation/disembarkation device for a small ship has a larger amount of sway of the ship's body when at anchor than the device for a large ship such as Patent Document 1, and an excessive external force acts on the ship side slope. As a countermeasure to this problem, the structural members of the ship's side slope have been made thicker in the past to make them strong enough to withstand it. However, this increases the weight of the embarkation/disembarkation device and requires a large force to move the device.
On the coasts of remote islands, the environment in which the boarding and disembarkation equipment is used is difficult due to strong winds and severe salt damage.In order to prevent breakdowns, ground workers are used as a means of moving the boarding and disembarkation equipment, rather than using self-propelled transport vehicles. It is common to use trolleys that are moved by Moreover, on such remote islands, it is difficult to secure personnel to transport the embarkation and disembarkation equipment, and the current situation is that the work is carried out by a small number of elderly people.
In light of this, there has been a need for lighter weight ship boarding and disembarking devices so that they can be easily moved using carts. One possible way to reduce the weight is, for example, to use aluminum alloy as the main material for the ship's side slope.

By the way, ship boarding and disembarkation devices are used for a long period of time while undergoing regular maintenance. However, since this device is installed on the quay, strong winds and salt damage can easily cause problems such as rust and cracks in the many welded parts on the ship's side slope, and it is necessary to re-weld and repair each time. there were.
Furthermore, as mentioned above, if aluminum alloy is used as the main material, welding is more difficult than mild steel, and there are no welders on most remote islands who have mastered such special welding techniques. Therefore, there has been a need for a ship boarding/disembarking device with a ship side ramp that eliminates the need for welding repair of aluminum alloy.

Therefore, as a result of intensive research, the inventor has developed a ship side slope with a pair of left and right girders that can be independently rotated in up, down, left and right directions, and between these girders, there are a number of The present invention was completed based on the finding that all of the above-mentioned problems could be solved by adopting horizontally mounted treads in parallel.

In other words, this invention can cope with large displacements of the ship's side slope due to the movement of small ships moored at the port or the ebb and flow of the tide without making the ship's side slope bulky. It is an object of the present invention to provide a ship boarding and disembarking device that can reduce the number of parts and facilitate maintenance, and furthermore, eliminates the need for welding and repairing aluminum alloy during maintenance.

The invention according to claim 1 provides a platform for boarding and disembarking that is movably installed on a quay where a small boat is moored, and a boat side that is connected to the platform and whose tip end is spanned over the boarding deck of the small boat. In the ship boarding and disembarkation device provided with a ramp, each of the ship side ramps is supported such that one end in the length direction thereof is rotatable around a vertical pin with respect to the platform and is rotatable around a horizontal pin. and has a pair of left and right girders, each of which is independently rotatable in the vertical and horizontal directions , and a plurality of footboards horizontally suspended in parallel between the pair of left and right girders, Each footboard is provided with a hole at each end thereof, and each of the pair of left and right girders is provided with a vertical shaft corresponding to the hole of each footboard, and these vertical shafts are respectively inserted into the hole of the footboard. As a result, both ends of each footboard are rotatable around these vertical axes , and vertical movement is allowed independently along these vertical axes.

The ship boarding and disembarking device is equipment used for boarding and disembarking people from the bay to small ships. The term "persons on board" as used herein includes not only those who board the vessel but also those who disembark from the vessel (disembarkers).
The type of ship embarkation/disembarkation device is arbitrary.
As the small vessel, for example, various passenger ships, various cargo ships, etc. can be employed.
A platform is a landing area where passengers board and disembark from a ship.
A ship's side ramp is a cantilevered corridor with a flat surface that spans the platform and the boarding deck for passengers, including able-bodied people and wheelchair users, to pass through when boarding or disembarking the ship. It is.

The platform may be provided with a means for getting on and off the boat, which is installed on the quay and allows passengers to get on and off the platform. In this case, the type of means for getting on and off the vehicle is not limited. For example, it may be a land-side slope or a stepped gangway. Furthermore, in addition to this, the vehicle may be equipped with a lifting device such as an elevator and a lifting lifter for use by wheelchair users and the like. The lifting device is a device that lifts and lowers a lifting cage in which a wheelchair or the like is boarded between the ground surface of the quay and the platform using cage lifting means. By providing the elevating device, it can be used as a barrier-free ship boarding and disembarking device.
It is preferable that the ship embarkation/disembarkation device is provided with a trolley on which a platform is mounted. The trolley may be manually operated or self-propelled.

As a structure for supporting a pair of left and right girders so that they can rotate independently in the vertical direction, for example, an elevation hinge having a horizontal axis is employed at the base end (end on the platform side) of each girder.
Further, as a structure for supporting a pair of left and right girders so as to be independently rotatable in the left-right direction, for example, a left-right swing hinge having a vertical axis is employed at the base end of each girder.
The shape of each footboard is arbitrary. For example, it may have a substantially rectangular shape that is long in the width direction of the ship side slope.
The number of treads used is arbitrary as long as it is two or more.

The ship side slope has a pair of left and right girders, and a plurality of footboards that are horizontally suspended in parallel between the pair of left and right girders. One end of each of the left and right pairs of girders is independently supported on the platform so as to be rotatable around a vertical pin, and also rotatably supported around a horizontal pin. Each footboard is provided with holes (through holes) at both ends thereof.
The pair of left and right girders are each provided with the same number of vertical shafts as the footboards, and the vertical shafts provided in the left girder and the vertical axes provided in the right girder form a pair. By inserting a pair of vertical shafts into the holes at both ends of each tread, both ends of each tread can be freely rotated around the vertical axis, and both ends can be independently rotated around the vertical axis. It is supported so that it can move up and down. In the connection of both ends of each footboard to each vertical axis, a structure may be adopted in which the wobbling of the footboard is increased when the footboard moves up and down. In this case, a cushioning material (spring, rubber, etc.) may be attached to the pivot portion of the footboard in order to prevent creaking noise caused by rattling and wear of the contact member.

In the invention according to claim 2, the ship side slope is provided with a roof through four pillars arranged at both ends of the pair of left and right girders in the length direction, and the roof of the four pillars is A claim characterized in that at least two of the left and right side supports are roof swing supports having a pair of swing pins extending in the width direction of the ship side slope at their upper and lower ends, respectively. 1. The ship boarding and disembarking device according to item 1.

The roof swing columns may be two columns arranged on the left side of the ship's side slope, or two columns arranged on the right side thereof. Alternatively, all four may be roof swing supports.
A pair of upper and lower swing pins whose length direction extends in the width direction of the ship side slope are disposed at the upper and lower ends of the roof swing support column. By arranging these swing pins on each roof swinging support, it is possible to prevent damage such as deformation of the support due to horizontal rotation (turning) of the ship side slope.
The swing width (swing angle) of each roof swing support post is arbitrary.

According to the invention set forth in claim 1, when the ship side slope spanning the boarding deck of a small boat moored at a quay moves in the bow and stern direction (back and forth direction) of the small boat due to the influence of waves, etc. Each girder, which is independently rotatable in the up, down , left and right directions, follows this and laterally rotates. Accordingly, both ends of each footboard , which are vertically movable and horizontally rotatable, rotate in a predetermined direction, and the footboards shift laterally in the direction of movement of the small boat while maintaining their parallel state. As a result, the ship side slope largely deforms into a rhombus shape (parallelogram shape) in the direction of movement of the small boat, with the connecting portion with the platform as the base end. Therefore, compared to the conventional ship side slope, the ability of the ship side slope to follow the bow and stern direction is improved.
In addition, when a small boat at anchor moves up and down due to the influence of tides, each girder, which can independently rotate up and down, follows and moves up and down. The ship's side slope looks up.

As a result, it is possible to cope with large displacements of the ship side slope due to the sway of small ships moored at the port and the ebb and flow of the tide, without making the ship side slope heavy. In addition, since many of the connecting points between the main parts of the ship's side slope have a rotating structure, maintenance can be simplified by reducing the number of welding points compared to conventional ship's side slopes. There is also almost no need for welding repairs on aluminum alloys, which require special welding techniques.

In particular, according to the ship embarkation/disembarkation device according to claim 2, the roof of the ship side slope consists of four girders arranged at both ends in the length direction of a pair of left and right girders that are independently rotatable in vertical and horizontal directions. It is erected using pillars. Therefore, when the ship side slope rotates in the left-right direction, a torsional moment is generated in each support column, which may cause deformation. However, in this case, when the ship's side slope rotates in the left-right direction, each roof swinging post swings in the length direction of the ship's side slope around the upper and lower swing pins, resulting in deformation (damage) to each support. ) can be prevented.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a plan view showing a state in which the ship boarding and disembarking device according to Example 1 of the present invention is used. 1 is a side view showing a state in which the ship embarkation/disembarkation device according to Example 1 of the present invention is used. (a) is a front view showing a ship side slope that constitutes a part of the ship embarkation/disembarkation device according to the first embodiment of the present invention. (b) is a front view showing a right-turning state of the ship side slope that constitutes a part of the ship embarkation/disembarkation device according to the first embodiment of the present invention. FIG. 2 is an enlarged side view of a main part showing a state of connection between a platform and a ship side slope, which constitute a part of the ship boarding and disembarking device according to the first embodiment of the present invention. 1 is an enlarged cross-sectional view of a main part showing a connection structure between a ship side slope and a roof swing support that constitutes a part of the ship embarkation/disembarkation device according to Embodiment 1 of the present invention. FIG. 2 is an enlarged cross-sectional view of a main part showing a connection structure between a roof swing support and a footboard of a ship side slope and a girder, which constitute a part of the ship boarding and disembarkation device according to the first embodiment of the present invention. (a) is an enlarged front view of a main part showing a connection structure between a roof and a roof fixing column, which constitute a part of the ship embarkation/disembarkation device according to Embodiment 1 of the present invention. (b) is an enlarged front view of a main part showing a connection structure between a roof and a roof swing support that constitutes a part of the ship boarding and disembarkation device according to the first embodiment of the present invention. (a) is an enlarged side view of a main part showing a roof mounting structure that constitutes a part of the ship embarkation/disembarkation device according to Embodiment 1 of the present invention. (b) is an enlarged side view of a main part showing another mounting structure for a roof that constitutes a part of the ship embarkation/disembarkation device according to Embodiment 1 of the present invention. 1 is an enlarged sectional view of a main part showing a connection structure between a handrail, a footboard, and a girder of a ship side slope, which constitutes a part of the ship embarkation/disembarkation device according to Embodiment 1 of the present invention. (a) is an enlarged plan view of a main part showing a connection structure of a footboard of a ship side slope that constitutes a part of the ship embarkation/disembarkation device according to Embodiment 1 of the present invention. (b) is an enlarged plan view of a main part showing a connection structure of a footboard in a right-turning state of a ship side slope that constitutes a part of the ship boarding and disembarking device according to the first embodiment of the present invention. FIG. 2 is a plan view showing a right-turning state of a ship side slope that constitutes a part of the ship embarkation/disembarkation device according to Embodiment 1 of the present invention. FIG. 2 is a side view showing a right-turning state of a ship side slope that constitutes a part of the ship embarkation/disembarkation device according to Embodiment 1 of the present invention. FIG. 2 is an enlarged cross-sectional view of a main part showing a connection structure between a roof swing support column, a footboard, and a girder in a right-turning state of a ship side slope that constitutes a part of the ship boarding/disembarkation device according to Example 1 of the present invention.

Embodiments of the present invention will be specifically described below with reference to the drawings. Here, we will take as an example a ship embarkation/disembarkation device installed in a small passenger ship. However, it is not limited to this. For convenience of explanation, the X1 direction is the forward direction of the ship's side slope (toward the sea), the X2 direction is the rearward direction of the ship's side slope (toward the quay), and the Y1 direction is the right direction of the ship's side slope (toward the stern of a small vessel). ), the Y2 direction is the left direction of the ship side slope (the bow direction of a small boat), the Z1 direction is the upward direction of the ship side slope, and the Z2 direction is the downward direction of the ship side slope.

As shown in FIGS. 1 and 2, a ship boarding and disembarking device 10 according to a first embodiment of the present invention is a boarding and disembarking device installed on a quay 12 of a remote island where a small passenger boat (hereinafter referred to as a small boat) 11 is moored. It includes a boat platform 13 and a boat side slope 16 connected to the platform 13 and having a roof 15 whose tip spans over the boarding deck 14 of the small boat 11.
Hereinafter, these structures will be specifically explained.
As shown in FIGS. 1, 2, and 4, the platform 13 is a thick aluminum alloy plate that is rectangular in plan view and is movable by being mounted on a hand-held trolley (not shown). At each corner on the Y1-Y2 side of the end on the X1 side of the platform 13, a connecting member 17 projects in the X1 direction. An end on the X2 side of a stainless steel flexible joint 18 is connected to the protruding portion of each connecting member 17 so as to be able to be elevated (moved up and down) via a horizontal elevation shaft 19 (FIG. 4). .

Next, the ship side slope 16 will be explained in detail with reference to FIGS. 1 to 10.
As shown in FIGS. 1 to 3, the ship side slope 16 includes a pair of left and right girders 20, 21, each of which is independently rotatable in the vertical and horizontal directions, and is horizontally mounted in parallel between each girder 20, 21. It has a plurality of footboards 22 extending in the Y1-Y2 direction, each of which is independently rotatable in the vertical and horizontal directions.
As shown in FIGS. 1 to 6, each girder 20, 21 is a square pipe made of aluminum alloy and long in the Y1-Y2 direction. A hooking portion 23 for connecting to the boarding deck 14 is provided on the lower surface of the X1 side end (tip) of each girder 20, 21. In addition, on the upper and lower surfaces of the X2 side end (base end) of each girder 20, 21, a pair of thick upper and lower hinge plates 24 made of aluminum alloy extend the X2 side end outward. They are each fixed in a protruding state (Figure 4).
An end on the X1 side of a stainless alloy flexible joint 18 is inserted between the protruding portions of each pair of hinge plates 24. Each pair of hinge plates 24 and the corresponding end of the universal joint 18 on the X1 side are each supported by a pair of left and right pivot shafts 25 extending in the vertical direction.
Thereby, each girder 20, 21 is connected to the platform 13 so as to be freely pivotable in the left-right direction. As a result, the pair of left and right girders 20 and 21 are independently rotatable in the vertical and horizontal directions via each elevation axis 19 and each left and right rotation axis 25.

Next, the roof 15 of the ship side slope 16 will be explained with reference to FIGS. 1 to 3, FIG. 7, and FIG. 8.
As shown in FIGS. 1 to 3, the roof 15 has a rectangular arch shape long in the X1-X2 direction, and its frame 26 includes a rectangular frame 27 made of an aluminum alloy tube that is rectangular in plan view, and an aluminum alloy tube. It has seven arch frames 28 made of alloy (FIG. 7). In these, each arch frame 28 is welded to the rectangular frame 27 at a predetermined pitch in the X1-X2 direction. The roof 15 is constructed by fixing a roof plate 29 made of transparent plastic or the like to the upper surface of the obtained framework 26.
This roof 15 is supported by each of the girders 20 and 21 via four pillars 30 that are long in the Z1-Z2 direction and are arranged at its four corners.

Hereinafter, the connection structure between each support 30 and the roof 15, and the connection structure between each support 30 and each girder 20, 21 will be specifically explained.
First, the four pillars 30 will be explained.
As shown in FIGS. 1 to 3, of the four pillars 30, two on the Y1 side are roof fixing pillars 31 made of long stainless steel round pipes. The two pipes arranged on the Y2 side are long round pipes made of stainless steel, and have a pair of swing pins 45 and 52 extending in the width direction of the ship side slope 16 at the upper and lower ends of each pipe. This is a roof swing support 32 having a roof swing support column 32.

As shown in FIG. 5, a pair of flanges F are formed on the outer peripheral surface near the lower end of each of the roof fixing columns 31. As shown in FIG. Further, as shown in FIGS. 7(a) and 8(a), a stainless alloy member 33 is fixed to the upper end of each roof fixing column 31, respectively.
The upper end of each roof fixing column 31 is connected to the elongated frame 27a of the rectangular frame 27 on the Y1 side through two gate-shaped connecting fittings 34 arranged at both ends on the X1-X2 side. Each is rotatably connected.
Each gate-shaped connecting fitting 34 has a fixed sleeve 35 fitted onto each elongated frame portion 27a, and a base end fixed to both longitudinal ends of the fixed sleeve 35 in parallel to the X1-X2 direction. It has a pair of fixed links 36 spaced apart. Insert the upper end of the roof fixing column 31 with each member 33 between the lower parts of each fixed link 36, and in this state, connect these three members 31, 33, 36 to extend in the X1-X2 direction. It is rotatably connected by a first bolt 37 and a nut N.

Further, as shown in FIG. 3, each roof swing support column 32 is divided into three parts, each including a lower end support section 38, an upper end support section 39, and a main body support section 40 that is long in the Z1-Z2 direction.
Next, with reference to FIG. 6, the connection structure between the lower end support portion 38 and the main body support portion 40 will be described.
A pair of flanges F are integrally formed on the outer circumferential surface near the upper end of each lower end support portion 38 . Furthermore, a first cap 42 made of aluminum alloy is fixed to the upper end of each lower end support 38, each having a first half piece 41 in which the Y1 side half of the upper end is cut out. .
On the other hand, a second cap 44 made of aluminum alloy is fixed to the lower end of each main body support 40, each having a second half piece 43 in which the Y2 side half of the lower end is cut out. . The corresponding first and second caps 42 and 44 are fitted with a second bolt (swinging bolt) extending in the Y1-Y2 direction via a flat washer between the opposing first and second half pieces 41 and 43. They are each rotatably connected by a pin) 45 and a nut N.

Next, the connection structure between the upper end support portion 39 and the main body support portion 40 will be described with reference to FIGS. 7(b) and 8(b).
A third cap 47 made of aluminum alloy is fixed to the upper end of each upper end support 39, and has a third half piece 46 in which the Y2 side half of the upper end is cut out. On the other hand, a fourth cap 49 made of aluminum alloy is fixed to the upper end portion of the main body support portion 40, and has a fourth half piece portion 48 in which the Y1 side half of the upper end portion is cut out. Each of the third and fourth caps 47 and 49 has a third bolt (swinging They are each rotatably connected by a pin 51 and a nut N.
Each upper end support portion 39 is connected to the elongated frame portion 27a on the Y2 side of the rectangular frame 27 through two other gate-shaped connecting fittings 34 disposed at both ends on the X1-X2 side. Connected for free movement.
In other words, each of the other gate-shaped connecting fittings 34 inserts the upper end of the column body section 40 with each third cap 47 between the lower portions of each of the fixed links 36, and in this state, these three members are connected. 36, 39, and 47 are rotatably connected to each other by a fourth bolt (swing pin) 52 extending in the X1-X2 direction and a nut N.

Next, the connection structure between each support column 30 and each girder 20, 21 will be specifically described with reference to FIGS. 5 and 6.
Near both ends of each girder 20, 21 on the X1-X1 side, there are strut posts, which are four short pipes made of aluminum alloy and whose tube axes extend in the Z1-Z2 direction, penetrating each upper and lower surface. 53 are welded to each other while penetrating the upper and lower surfaces.
Among these, the lower end portions of the respective roof fixing columns 31 are inserted into the two column posts 53 on the Y1 side. At this time, a large diameter retaining washer 54 is fixed with a screw 55 to the lower end surface of the portion of the lower end of each roof fixing column 31 that protrudes from the lower opening of each column post 53. As a result, each roof fixing column 31 is erected on each Y1 side girder 20 so as to be movable up and down between the flange F and the retaining washer 54.
Further, the lower end support portions 38 of each roof swing support support 32 are inserted into the two support posts 53 on the Y2 side. At this time, another large diameter retaining washer 54 is fixed with a screw 55 on the lower end surface of the portion of the lower end of each roof swing support column 32 that protrudes from the lower opening of each support post 53. ing. As a result, each of the roof swing supports 32 is erected on the girder 21 on the Y2 side so as to be movable up and down between the flange F and the retaining washer 54.

Furthermore, a pair of left and right handrails 56 are provided on each girder 20, 21 over its entire length (FIG. 9). Each handrail 56 has a rectangular handrail frame 57 made of aluminum alloy and long in the X1-X2 direction. At predetermined locations in the length direction of the handrail frame 57, upper end portions of six aluminum alloy poles 59 are respectively fixed at predetermined pitches via brackets 58 arranged in upper and lower pairs. On the other hand, six pole posts 60 made of aluminum alloy are welded to each girder 20, 21 at a predetermined pitch in the X1-X2 direction so as to penetrate through the upper and lower surfaces thereof. The lower end of each pole 59 is inserted into a corresponding pole post 60. Another large diameter retaining washer 54 is fixed by a screw 55 to the lower end surface of the portion of each pole 59 that protrudes from the lower opening of the corresponding pole post 60.
A pair of support plates 61 that are long in the X1-X2 direction and have a transverse L-shaped cross section over the entire length are welded to the lower part of the slope inner surface of each girder 20, 21. Each support plate 61 is a long member made of aluminum alloy, and its flat upper plate piece 62 has 19 bolt holes formed at a predetermined pitch in the X1-X2 direction. The pitch of each bolt hole is the parallel pitch of each footboard 22. Further, on the tip of the upper surface of each support plate 61, elongated protruding plate pieces 63, which serve as fulcrums for vertical movement (vertical swing) of each foot plate 22, are screwed in parallel over the entire length thereof.

Further, on the upper part of the inner side of the slope of each girder 20, 21, a plurality of holes having approximately the same length as the width of two tread plates 22 are provided at a predetermined distance from the upper plate piece 62 of each support plate 61. The holding plate 64 is removably connected via a plurality of short bolts 65 and nuts N. Each pressing plate 64 is a substantially U-shaped groove-shaped member elongated in the X1-X2 direction with the opening facing upward. The upper plate piece 62 of each support plate 61 and the flat lower plate piece 66 of the corresponding presser plate 64 face each other in a parallel state with a predetermined gap therebetween.
Corresponding ends 22a on the Y1-Y2 side of each footboard 22 are inserted into these gaps at a predetermined pitch in the X1-X2 direction (FIGS. 9 and 10(a)). Corresponding ends 22a of each footboard 22 in the Y1-Y2 direction are connected to each of these members 62 and 66 with a large wobble (swing width) by a plurality of connecting bolts 67 and nuts N. There is. In addition, among the connecting bolts 67, a thick rubber ring 68 is installed between the corresponding end 22a of each footboard 22 and the lower plate piece 66 to prevent squeaks and the like when walking caused by this rattling. is inserted. Furthermore, a cushioning rubber sheet 69 is attached to the back surface of both ends of each footboard 22 in the Y1-Y2 direction to prevent the generation of creaking noise.

Each footboard 22 is a substantially rectangular plate made of aluminum alloy or FRP that is elongated in the Y1-Y2 direction, and both ends 22a in the length direction thereof each have a triangular shape. A plurality of bolt holes into which each connecting bolt 67 is inserted are formed in the top portions of these holes.
Furthermore, a plurality of reinforcing ribs 70 are bent and formed at the center of each footboard 22 in the Y1-Y2 direction.
Further, an overlap portion 71 is arranged in the central area of the long side of each footboard 22 on the X2 side to prevent, for example, the heel of a shoe from getting caught in the gap between adjacent footboards 22. (Figure 10(a)).

Next, with reference to FIGS. 1 to 13, a method of using the ship embarkation/disembarkation device 10 according to the first embodiment of the present invention will be described.
As shown in FIGS. 1 to 3, after a small boat 11 has docked on a remote island, a ground worker uses a hand-held trolley (not shown) to remove the boat boarding and disembarkation device 10 stored in a gangway storage area. It is moved to the vicinity of the small boat 11 on the quay 12 and grounded.

On the other hand, the tip of the ship side slope 16 is hooked to the boarding deck 14 of the small boat 11 via the hooking part 23, and the ship side slope 16 is bridged between the small boat 11 and the boat boarding/disembarking device 10. . Specifically, as necessary, the pair of left and right girders 20 and 21 are raised and raised about each elevation axis 19, and each girder 20 and 21 is moved a predetermined amount in the left and right direction about the left and right rotation axis 25. The ship side ramp 16 is latched to the entrance of the boarding deck 14.

Next, with reference to FIGS. 3 and 10 to 13, we will discuss automatic tracking of the ship side slope 16 when the small ship 11 at anchor moves significantly toward the stern (Y1 direction) due to the influence of waves, tides, etc. explain.
When the small boat 11 moored at the quay 12 moves significantly toward the stern due to the influence of waves, etc., each girder 20, 21, which can independently rotate in the left and right directions, moves around the corresponding left and right rotation axis 25. Then follow this and make a large turn in the Y1 direction. Along with this, via each connecting bolt 67 spanned between the receiving plate and the holding plate 64 of each girder 20, 21, each column can be moved up and down independently , and can be rotated independently in the left and right direction. Both ends of the footboards 22 rotate in a predetermined direction, and each footboard 22 is laterally shifted in a diamond shape (parallelogram shape) in the moving direction of the small boat 11 while maintaining the parallel state.
As a result, the ship side slope 16 is largely deformed into a diamond shape in the moving direction of the small boat 11 with the connecting member 17 connected to the platform 13 as the base end. Therefore, compared to the conventional ship side slope 16, the followability of the ship side slope 16 in the bow and aft direction is improved.
Furthermore, when the small vessel 11 at anchor moves vertically due to the influence of the tide, etc., each of the girders 20 and 21, which are independently rotatable vertically, rotates around the elevation axis 19. It follows this and moves up and down, and the ship side slope 16 moves up and down accordingly.

As a result, by adopting aluminum alloy as the main material for the ship side slope 16, it is possible to reduce the weight of the ship side slope 16, and to prevent the shaking of small vessels 11 moored at the port without making the ship side slope 16 heavy. It is also possible to cope with large displacements of the ship side slope 16 due to ebb and flow of the tide. Moreover, since the rotating structure is adopted in many of the connection points between the main members of the ship side slope 16 in this way, compared to the conventional ship side slope 16, the number of welding points can be reduced and maintenance can be made easier. Furthermore, during maintenance of the ship side slope 16, there is almost no need for welding repair of aluminum alloy, which requires special welding techniques.
Furthermore, the roof 15 of the ship side slope 16 is erected using four pillars 30 arranged at both longitudinal ends of a pair of left and right girders 20, 21 that are independently rotatable in vertical and horizontal directions. ing. Therefore, if the ship side slope 16 rotates in the left-right direction, there is a possibility that a torsion moment will be generated in each support column 30 and the support column 30 will be deformed. However, here, when the ship side slope 16 rotates in the left-right direction, each roof swing support 32 swings in the length direction of the ship side slope 16 around the upper and lower swing pins, so each support 30 deformation (damage) can be prevented.

The present invention is useful as a technology for a ship embarkation/disembarkation device installed on a quay where ships such as ferries are moored.

10 Ship embarkation and disembarkation equipment,
11 Small vessels,
12 Quay,
13 platform,
14 Passage deck,
15 roof,
16 Ship side slope,
20, 21 digits,
22 Treadboard,
30 pillars,
31 Roof fixing support,
32 Roof swing support,
45 second bolt (swing pin),
52 Fourth bolt (swing pin).

Claims (2)

A platform for embarkation and disembarkation that is movably installed on the quay where small vessels are moored;
A ship boarding/disembarkation device comprising a ship side slope connected to the platform and having a tip end spanning the boarding deck of the small vessel,
The ship side slope is
One end in the length direction of each is rotatable around a vertical pin with respect to the platform, and is supported rotatably around a horizontal pin, so that each end can be rotated independently in the vertical and horizontal directions. A pair of left and right girders provided in
It has a plurality of treads horizontally suspended in parallel between the pair of left and right girders,
Each footboard is provided with a hole at each end thereof, and each of the pair of left and right girders is provided with a vertical shaft corresponding to the hole of each footboard, and these vertical shafts are respectively inserted into the hole of the footboard. Accordingly, both ends of each footboard are rotatable about these vertical axes , and vertical movement is allowed independently along these vertical axes. A roof is provided on the ship side slope via four pillars arranged at both ends in the length direction of the pair of left and right girders,
Of the four pillars, at least two on the left or right side shall be roof swing pillars having a pair of swing pins extending in the width direction of the ship side slope at their upper and lower ends, respectively. The ship boarding and disembarking device according to claim 1, characterized in that:

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