JP2005133369A - Ship embarking-disembarking device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a ship embarking-disembarking device simple in structure, miniaturizable and reducible in weight, easily operated taking no time for preparation and allowing embarking/disembarking persons to easily and smoothly pass through a stair passage. <P>SOLUTION: This ship embarking-disembarking device is provided with a derricking stair frame 59; a cam link 63 pivoted on the same axis as a pivot point of the stair frame 59; a link member 65 pivoted to the lower end of the cam link 63 through a horizontal pin 64 and constituted to derrick integrally with the stair frame 59; a plurality of stair stepboards arranged at predetermined spaces in the longitudinal direction of the stair frame 59, with the upper parts pivoted to the stair frame 59 and with the lower parts pivoted to the link member 65; and a lever 77 having a locking member 78 for fixing the cam link 63 in the case of using the stair stepboards 66 in the stepped state of treads and releasing the fixed state of the cam link 63 in the case of using the stair stepboards 66 as a flat passage without step difference on the treads. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a ship getting-on / off device that communicates between a quay roof and a ship anchored on a quay.

  In order to get on and off a ship anchored on a quay from a quay roof, a ship getting on and off apparatus having a stairway that can be raised and lowered has been used. However, in conventional ship getting on and off devices, conditions such as the size of the ship anchored on the quay, draft state, tide level difference, etc. overlap, and the height from the quay to the ship lock is significantly higher than in the normal state. In such a case, the steps of each stair step board in the stairway passage become large, which is an obstacle when passing by elderly people or people with reduced mobility.

  Therefore, in order to solve such a problem, the present applicant has proposed a ship getting on / off apparatus as shown in Patent Document 1, and this ship getting on / off apparatus is shown in FIGS. That is, the bracket 4 is erected on the land-side upper surface of the traveling frame 3 having the traveling wheels 1 and capable of traveling on the quay 2, and the bracket 5 is erected on the sea-side upper surface. A long hole 5 a is formed in the bracket 5 so that the longitudinal direction is parallel to the traveling frame 3.

  The bracket 4 is pivotally supported by an elevating frame 7 extending obliquely upward on the bracket 5 side via a horizontal pin 6, and the bracket 5 can be slid with respect to the long hole 5 a. An elevating frame 9 that extends obliquely upward toward the bracket 4 side is pivotally supported via a pin 8. The cross portions of the brackets 4 and 5 are connected by a horizontal pin 10. A horizontal member 13 is pivotally supported on the upper ends of the lifting frames 7 and 9 via horizontal pins 11 and 12.

  An elevating cylinder 15 pivotally supported on the traveling frame 3 via a horizontal pin 14 at the lower end is disposed so as to face obliquely upward along the elevating frame 9, and the upper end of the piston rod 15a of the elevating cylinder 15 is horizontal. It is connected to the pin 10.

  A horizontal pin 16 provided on the horizontal member 13 so as to be positioned above the horizontal pin 12 is pivotally supported by a base end portion of an undulating passage 17 positioned in the horizontal member 13. The undulating passage 17 extends from the horizontal pin 16 side to the sea side along the horizontal member 13, and the sea side end portion is located in the vicinity of the sea side end portion of the horizontal member 13. A vertical undulation cylinder 18 is attached to the sea side end of the horizontal member 13, and the upper end of the piston rod 18 a of the undulation cylinder 18 is connected to the undulation passage 17 via a horizontal pin 19.

  A land-side movable passage 20 is disposed on the land side of the undulation passage 17, and a ship-side movable passage 21 is disposed on the sea side so as to reciprocate along the surface of the undulation passage 17 in the direction of the arrow.

  At the sea side end of the ship side movable passage 21, a stair frame 23 constituting a stair passage 22 is pivotally supported via a horizontal pin 24 so as to be raised and lowered. A link member 27 disposed below the staircase frame 23 is pivotally supported by the bracket 25 fixed below the installation portion of the horizontal pin 24 of the ship-side movable passage 21 via the horizontal pin 26 so as to be raised and lowered. . The link member 27 extends in parallel with the staircase frame 23, and the staircase frame 23 and the distal end portion of the link member 27 are connected by a front end bracket 30 via horizontal pins 28 and 29. A platform 31 is integrally fixed to the distal end bracket 30.

  A plurality of stair treads 32 are attached to the stair frame 23 and the link member 27 at predetermined intervals in the longitudinal direction. That is, the stair tread 32 is pivotally supported on the side by the stair frame 23 via the horizontal pin 33, and the bracket 34 fixed to the lower end of the stair tread 32 is pivoted by the link member 27 via the horizontal pin 35. .

  Thus, the line connecting the centers of the horizontal pins 24, 26, the line connecting the centers of the horizontal pins 33, 35, and the line connecting the centers of the horizontal pins 28, 29 are all vertical, and the horizontal pins 24, 33, 33 are both vertical. ,... 28 and the straight line connecting the centers of the horizontal pins 26, 35, 35,. Accordingly, a parallelogram link is formed by the stair frame 23, the link member 27, the tip bracket 30, and the stair tread 32. Even if the stair frame 23 and the link member 27 are raised and lowered, the treads and platforms 31 of each stair tread 32 are provided. The treads can be kept level at all times.

  A bracket 36 is fixed to the ship-side movable passage 21 so as to be positioned further below the bracket 25 fixed portion, and the rear end of the undulation cylinder 38 is connected to the bracket 36 via a horizontal pin 37. ing. Further, the hoisting cylinder 38 extends in parallel with the link member 27, and the tip of the piston rod 38 a of the hoisting cylinder 38 is fixed to a lower part of the longitudinal halfway portion of the staircase frame 23 via a horizontal pin 39. It is connected to. In addition, in FIG. 16, 41 is a quay roof.

  For example, when setting up the above-mentioned ship getting-on / off device so that passengers can pass between a quay roof 41 and a ship (not shown) anchored at the quay 2, the lifting cylinder 15 is operated. After adjusting the position of the horizontal member 13 in the height direction according to the quay hut 41, the undulation cylinder 18 pushes up the seaside tip of the undulation passage 17, and the undulation passage 17 rises from the quay shed 41 side. Adjust to a gradient. Next, by extending the hoisting cylinder 38, the staircase frame 23 and the link member 27 of the stairway passage 22 are pivoted upward and the platform 31 is set to the height of the quay 2 to match the lock of the ship anchored.

  In addition, the land-side movable passage 20 is moved to the quay roof 41 side, the ship-side movable passage 21 is moved to the sea side, the platform 31 is adjusted to the height of the lock, and the stair frame 23 and the link member are slightly adjusted by the undulation cylinder 38. The tip of 27 is lowered to support the platform 31 on the lower edge of the lock gate. Thus, passengers can pass between the quay roof 41 and the ship.

  In the above-described ship getting-on / off device, the undulating passage 17 is provided, and since the land-side movable passage 20 to the ship-side movable passage 21 can be inclined upward, the elevation angle of the stairway passage 22 is not steeply inclined as in the conventional device. However, the platform 31 can be positioned so as to correspond to the lock gate.

  Therefore, the inclination angle of the staircase passage 22 does not become steep, and as a result, the step H of the staircase tread 32 shown in FIG. 17 does not become excessively large. 22 can pass.

For example, when the stair tread 32 of the stair passage 22 is used as a flat corridor without a step, the undulation cylinder 38 of FIG. 17 is operated to change the inclination angle of the stair passage 22 as shown in FIG. 17 and the inclination angle of the ship-side movable passage 21 are the same. For this reason, there is no step on the tread surface of the stair step board 32, the stair step board 32 has a flat corridor shape, and even when the inclination angle of the stair passage 22 is loose, passengers can easily go through the stair passage 22. Can do.
JP-A-3-51404

However, the above-described ship getting on / off apparatus has the following problems.
i) The horizontal member 13 is moved up and down by the lifting cylinder 15 and the hoisting passage 17 is raised and lowered by the hoisting cylinder 18, which complicates the structure of the apparatus and increases the size and weight. Incurs cost increase.
ii) When setting the device, in addition to the operation of raising and lowering the staircase passage 22 to a predetermined angle, the operation of raising and lowering the horizontal member 13 to a predetermined height and the operation of inclining the undulation passage 17 to a predetermined angle are required. Therefore, the entire operation is complicated and preparation takes time.
iii) In use, when the tip of the platform 31 is supported by the lock, and the ship is shaken up and down by the wave, the hoisting cylinder 18 is provided so that the inclination angle of the hoisting passage 17 can be changed according to the shake. Since the oil must be able to freely enter and exit, the weight of the hoisting passage 17 cannot be supported by the hoisting cylinder 18, and therefore the weight on the lock of the ship is increased and the load of the ship is increased. The burden increases.
iv) For example, when the stair step board 32 of the stair passage 22 is used as a flat corridor without a step, there is a problem similar to iii), and the platform 31 is also inclined as shown in FIG. It is difficult to get on and off the platform 31.

  In view of the above circumstances, the present invention has a simple structure, can be reduced in size and weight, is easy to operate and does not take time for preparation, and allows passengers to easily access the stairway and the tip platform. The object of the present invention is to provide a marine boarding / alighting device that can be smoothly performed.

  The marine boarding / alighting device according to claim 1 is a marine boarding / alighting device provided with a stairway that can be raised and lowered, and the stairway includes a plurality of staircases arranged at predetermined intervals in the longitudinal direction, and a tread on the staircases This is provided with switching means for eliminating the step and making a flat passage.

  The marine boarding / alighting device according to claim 2 holds the platform tread provided at the tip of the stairway substantially horizontally regardless of whether the tread of the stairway has a step or a flat passage without a step. Horizontal holding means is provided.

The ship boarding / alighting device according to claim 3 is a ship boarding / alighting device provided with a stairway that can be raised and lowered,
The stairway is
A staircase frame pivotably supported by a predetermined frame body;
A cam link that pivots on substantially the same axis as the pivot point of the staircase frame and protrudes downward;
A link member pivotally supported by the lower portion of the cam link and extending in the longitudinal direction of the staircase frame, and capable of being raised and lowered integrally with the staircase frame;
A plurality of stair treads arranged at predetermined intervals in the longitudinal direction of the staircase frame, wherein the upper part is pivotally supported by the staircase frame and the lower part is pivotally supported by the link member;
When the stair tread is used with a step on the tread, the cam link is locked. When the stair tread is used as a flat passage without a step on the tread, the cam link is engaged. Including fixing and releasing means for releasing the stop,
A parallelogram link is formed by the stair frame, the link member, the stair tread, and the cam link.

  In the marine boarding / alighting device according to claim 4, the fixing and fixing releasing means includes a lever pivotally supported by the frame body and a locking member provided on the lever so as to be locked to the cam link. I have.

  In the marine boarding / alighting device according to claim 5, when the stair tread is used in a state where there is no step on the tread, the stair tread is pivotally supported with the locking to the cam link being released by the fixing and fixing release means. A link member moving and fixing means for moving the link member to the frame body and fixing the link member to the staircase frame is provided.

  In the marine boarding / alighting device according to a sixth aspect, the link member moving / fixing means includes an openable / closable gripping arm adapted to grip a restrained member fixed to the link member.

  The marine boarding / alighting device of claim 7 includes a horizontal holding means for holding the platform tread flat.

In the marine boarding / alighting device according to claim 8, the horizontal holding means is:
A base end portion pivotally supported by the frame body and extending in the longitudinal direction of the staircase frame, and another link member different from the link member;
A bracket that is pivotally supported by the tip of the other link member and the tip of the staircase frame and to which a platform is attached,
A parallelogram link is formed by the step frame, the other link members, and the platform.

  The marine boarding / alighting device according to claim 9 is provided with a buckling prevention member whose upper part is pivotally supported by the staircase frame and whose lower part is pivotally supported by the other link member to prevent buckling of the other link member. It is provided.

  According to the present invention, when the ship getting-on / off device is set for the lock of the ship, if the inclination of the stairway is greater than or equal to a predetermined angle, the passenger gets on the stepped step board with a step to the ship. When getting on and off and the inclination of the stairway is smaller than a predetermined angle, the passenger can get on and off the ship by passing through the flat stair-step board with no steps.

According to the ship boarding / alighting device of the present invention, various excellent effects can be obtained as follows.
I) Since the lifting cylinder for raising and lowering the horizontal member, the raising and lowering passage and the raising and lowering cylinder for raising and lowering the raising and lowering passage are not required as in the conventional device, the structure of the device is simplified. The weight can be reduced and the cost can be reduced.
II) When the apparatus is set, the operation of the ascending / descending cylinder and the undulating cylinder is not necessary, so that the entire operation is easy and preparation can be performed quickly.
III) Since the undulating passage is unnecessary and the weight supported by the lock is only the weight of the stairway that can be undulated, the load on the ship is reduced.
IV) When the inclination angle of the stairway is small, the stair tread can be used as a flat ramp, and the platform can always be kept horizontal, so it is easy for passengers to get on and off and to get on and off smoothly. Can do.

Embodiments of the present invention will be described below with reference to the accompanying drawings.
1 to 15 are examples of embodiments for carrying out the present invention.
As shown in FIG. 1, a horizontal frame 53 is fixed to the upper ends of the left and right columnar members 52 provided with wheels 51 capable of traveling at the lower ends, and a traveling frame body 54 is formed. A shuttle-type land-side movable passage 55 is disposed on the sea side, and a cart-type ship-side movable passage 56 is disposed on the sea side so as to reciprocate in the horizontal direction.

  The brackets 57 (see FIG. 3) fixed to the left and right sides at the sea side end of the ship-side movable passage 56 are supported by left and right stair frames 59 constituting the stair passage 58 via a horizontal pin 60 so as to be raised and lowered. ing. In addition, a bracket 61 (see FIG. 3 and the like) fixed to the left and right intermediate portions at the sea side end of the ship side movable passage 56 is shown enlarged in FIGS. 4, 10, and 12 through a horizontal pin 62. Thus, a cam link 63 protruding downward is pivotally supported, and a lower end of the cam link 63 is disposed at a substantially central portion between the left and right staircase frames 59 via a horizontal pin 64. A link member 65 extending from the land side toward the sea side is pivotally supported as a component constituting the stairway passage 58 so as to be able to undulate. The axial centers of the horizontal pins 60 and 62 are located on the same axis as viewed from the side.

  The cam link 63 is formed with sides 63 a and 63 b extending in the vertical direction so as to be positioned on both sides of the horizontal pin 62 in the horizontal radial direction. Further, the dimension in the horizontal radial direction of the horizontal pin 62 between the sides 63a and 63b is small on the upper side and becomes larger toward the lower side. That is, the cam link 63 has a shape that expands as it goes downward, and is formed in a substantially arc shape below the maximum distance between the sides 63a and 63b with respect to the vicinity of the mounting portion of the horizontal pin 64. . The link member 65 extends substantially parallel to the upper edge of the staircase frame 59 to the vicinity of the tip of the staircase frame 59.

  Between the left and right staircase frames 59, a plurality of staircase steps 66 are arranged at predetermined intervals in the longitudinal direction of the staircase frame 59. That is, the stair step board 66 is pivotally supported at the side by a stair frame 59 via a horizontal pin 67, and the bracket 68 fixed to the lower end of the stair step board 66 is pivotally supported by a link member 65 via a horizontal pin 69. Yes.

  Thus, the line connecting the centers of the horizontal pins 62 and 64 and the line connecting the centers of the horizontal pins 67 and 69 are straight lines extending in the vertical direction parallel to each other, and the horizontal pins 62, 67, 67,. .. The straight line connecting the centers of the horizontal pins 64, 69, 69,... Is parallel. Accordingly, a parallelogram link is formed by the stair frame 59, the link member 65, and the stair step board 66.

  A bracket 70 is fixed to the support member 56a fixed so as to hang downward at the bracket 57, 61 fixed side tip of the ship side movable passage 56 so as to be positioned further below the portion where the horizontal pin 64 is disposed. The rear end of the hoisting cylinder 72 is connected to the bracket 70 via a horizontal pin 71. The hoisting cylinder 72 extends in parallel with the link member 65, and the tip of the piston rod 72 a of the hoisting cylinder 72 is connected to a bracket 74 fixed in the middle in the longitudinal direction of the staircase frame 59 via a horizontal pin 73. Has been.

  As shown in enlarged views in FIGS. 4, 10, and 12, the bracket 75 fixed to the ship-side movable passage 56 has a lever 77 having a substantially L-shaped side surface that can be rotated via a horizontal pin 76. The lever 77 extends to the side of the link member 65 and is directed upward at the tip portion. The upward-facing portion 77a has a cam at its front and rear portions in the horizontal radial direction with respect to the horizontal pin 62 as a reference. A horizontal pin-shaped locking member 78 that can be locked to the sides 63a and 63b of the link 63 is fixed.

  A bracket 79 fixed to the opposite side of the support member 56a of the support member 56a in the ship-side movable passage 56 is pivotally supported by a lower end of a lever cylinder 81 that is vertically oriented via a horizontal pin 80. An upper end of the 81 piston rod 81 a is pivotally supported by a bracket 83 fixed to an intermediate portion of a portion of the lever 77 facing substantially horizontal via a horizontal pin 82. Thus, the cam link 63 is fixed when the stair tread 66 is held with the step H by the lever 77 or the lever cylinder 81 provided with the locking member 78 (see FIG. 4). A fixing and releasing means for releasing the fixation of the cam link 63 (see FIGS. 10 and 12) is formed when there is no step.

  A link member moving / fixing means 84 is provided in the longitudinal intermediate portion of the staircase frame 59. That is, as shown in FIG. 6, a substrate 85 is fixed to the lower surface in the middle of the longitudinal direction of the staircase frame 59, and a pair of rotatable vertical pins 86 provided on both left and right sides of the width direction of the substrate 85 has a tip. A gripping arm 87 is fixed so that the portion is separated at a predetermined interval in the longitudinal direction of the link member 65. Each vertical pin 86 has a horizontal angle of about 90 degrees with respect to the gripping arm 87, and a lever 88 extending to the opposite side with respect to each vertical pin 86 in plan view. The levers 88 are connected to each other by a clamp cylinder 89.

  As shown in FIG. 6, a vertically pinned restrained member 90 is fixed in the middle of the link member 65 in the longitudinal direction, and the restrained member 90 is positioned between the gripping arms 87 facing each other. It has become. 6 to 8, reference numeral 91 denotes a stopper pin that regulates the opening degree of the gripping arm 87.

  As shown in FIGS. 13 to 15, a fan-shaped buckling prevention member 92 that extends downward is disposed between the inside of the stair frame 59 and the outside of the stair tread 66, and the buckling prevention member 92. Is supported by a horizontal pin 67 for pivotally supporting the stair tread 66 to the stair frame 59. One buckling prevention member 92 is provided for each of the plurality of stair treads 66 (two sets in the illustrated example).

  A link member 95 is pivotally supported by a bracket 93 (see FIG. 13) attached below the left and right brackets 57 of the ship side movable passage 56 via a horizontal pin 94 so as to be raised and lowered. The link member 95 extends parallel to the link member 65 to the front end side of the staircase frame 59, and the front end portion thereof is at the lower end of the bracket 97 whose upper end is pivotally supported by the front end portion of the staircase frame 59 via the horizontal pin 96. It is pivotally supported via a horizontal pin 98. An intermediate portion in the longitudinal direction of the link member 95 is connected to the buckling prevention member 92 via a horizontal pin 99.

  A platform 100 having a flat tread surface is integrally fixed to the bracket 97, and the side surface shape of the platform 100 and the bracket 97 is substantially L-shaped. The lines connecting the horizontal pins 60 and 94, the lines connecting the horizontal pins 67 and 99, and the lines connecting the horizontal pins 96 and 98 are all vertical, and connect the horizontal pins 60, 67,. The straight line connecting the straight line and the horizontal pins 94, 99,... 98 is parallel. Therefore, even if the staircase frame 59 and the link member 95 are raised and lowered, the tread surface of the platform 100 can always keep horizontal.

  13 to 15, reference numeral 101 denotes a swing stopper for the buckling prevention member 92 provided in the vicinity of the lower edge of the staircase frame 59, and reference numeral 102 denotes a flap attached to the tip of the platform 100 so as to be raised and lowered. In FIG. 1, 103 is a quay, 104 is a quay hut whose upper surface is located slightly below the lower surface of the land-side movable passage 55, and 105 is a lock open to the ship's outer shell. Furthermore, the same code | symbol is attached | subjected to the same thing in FIGS.

Next, the operation of the illustrated example will be described.
For example, when setting the ship boarding / exiting device of the illustrated example so that passengers can pass between the quay roof 104 and the ship moored at the quay 103, is it used as the step board 66? Depending on whether or not it is used as a flat passage (slope) without a step, the method of operation differs.

  For example, when the inclination angle of the staircase passage 58 is greater than about 10 degrees, the step H between the upper and lower staircase steps 66, 66 can maintain a predetermined interval, and no hindrance is caused. For this reason, the upper and lower stair treads 66 are used as steps. Therefore, in this case, as shown in FIG. 4, the lever 77 is rotated downward by the lever cylinder 81 in the fixing and releasing means of the cam link 63, and the horizontal pin-shaped locking member 78 is attached to the cam link 63. Lock to the sides 63a, 63b. For this reason, the cam link 63 is fixed so that the line connecting the horizontal pins 62 and 64 is vertical when the stairway 58 is raised and lowered. Therefore, the horizontal pin 64 is also in a fixed state in which the axial center position does not move. Further, as shown in FIG. 7, the clamp cylinder 89 of the link member moving / fixing means 84 retracts the piston rod so that the restrained member 90 fixed to the link member 65 by the grip arm 87 is not gripped. Keep it.

  In this case, in addition to the line connecting the centers of the horizontal pins 62 and 64, the line connecting the horizontal pins 67 and 69 is also vertical. Furthermore, the line connecting the horizontal pins 60 and 94, the line connecting the horizontal pins 67 and 99, and the line connecting the horizontal pins 96 and 98 are all vertical.

  Next, by extending or contracting the undulation cylinder 72, the stair frame 59 and the link members 65 and 95 of the stair passage 58 are inclined to a predetermined slope as shown in FIG. Match 103 to Xiamen 105 on a vessel anchored.

  In addition, the land-side movable passage 55 is moved to the quay shed 104 side, the ship-side movable passage 56 is moved to the sea side, the supported portion of the platform 100 is positioned at a predetermined position with respect to the lock 105, and the undulation cylinder 72 is used to make a staircase. The ends of the frame 59 and the link members 65 and 95 are slightly lowered to support the platform 100 on the lower edge of the lock gate 105 through the supported portion. Thus, the passengers can pass between the quay roof 104 and the ship.

  In this case, the stair frame 59, the link member 65, the cam link 63, and the stair tread 66 are parallelogram links, and the line connecting the centers of the horizontal pins 62 and 64 and the line connecting the horizontal pins 67 and 69 are any. Since the undulation is performed while maintaining the vertical state, the tread surface of the stair tread plate 66 is always maintained in the horizontal state. Further, a parallelogram link is formed by the stair frame 59, the link member 95, the bracket 97, and the buckling prevention member 92, and a line connecting the horizontal pins 60 and 94 and a line connecting the horizontal pins 67 and 99. Since the lines connecting the horizontal pins 96 and 98 are all vertical, the tread surface of the platform 100 is always kept horizontal even when the stair frame 59 and the link member 95 are raised and lowered. Therefore, the passenger can smoothly pass between the quay roof 104 and the ship.

  When the inclination angle of the stair passage 58 is smaller than about 10 degrees, the step H between the upper and lower stair treads 66, 66 is reduced, and it becomes difficult to move up and down. For this reason, the upper and lower stair treads 66 are used as a flat passage. Therefore, in this case, as shown in FIGS. 10 and 12, the lever cylinder 81 in the fixing and releasing means of the cam link 63 is operated to rotate the lever 77 upward. Therefore, the locking member 78 is separated from the sides 63a and 63b of the cam link 63, the cam link 63 is released, and the horizontal pin 64 is also released. As a result, the cam link 63 is released from the horizontal pin 62. And the link member 65 can move in the longitudinal direction. Therefore, the stair tread 66 can be rotated in the longitudinal direction of the link member 65 by the link member 65 with the horizontal pin 67 as a fulcrum.

  Therefore, when the clamp cylinder 89 of the link member moving / fixing means 84 is operated in the direction in which the piston rod protrudes, the pair of gripping arms 87 are rotated so as to approach each other, and one gripping arm 87 is linked to the link member. The restrained member 90 fixed to 65 is moved to the ship-side movable passage 56. As a result, the link member 65 is moved to the ship-side movable passage 56 side, and the restrained member 90 is sandwiched between the left and right vertical pins 86 in plan view as shown in FIG.

  When the link member 65 moves in the longitudinal direction toward the ship-side movable passage 56, the stair tread 66 is rotated about the horizontal pin 67 by the movement of the link member 65, as shown in FIGS. In addition, the tread surface of the stair tread 66 is a flat ramp with no steps.

  When the hoisting cylinder 72 is operated in this state, the link member 65 is fixed to the stair frame 59 by the link member moving and fixing means 84, so that the stair step board 66 and the link member 65 together with the stair frame 59. It undulates integrally. For this reason, the tread surface of the stair tread plate 66 undulates following the inclination angle of the stair frame 59 while maintaining the ramp condition. At this time, the cam link 63 rotates with the horizontal pin 62 as a reference.

  On the other hand, as described above, the parallelogram link is formed by the staircase frame 59, the link member 95, the bracket 97, and the buckling prevention member 92, and the lines connecting the horizontal pins 60 and 94, the horizontal pins 67, Since the line connecting 99 and the line connecting horizontal pins 96 and 98 are both vertical, the tread surface of the platform 100 is held horizontally even when the stair frame 59 and the link member 95 are raised and lowered. Therefore, even when the stair tread plate 66 is used as a flat ramp, the tread surface of the platform 100 is undulated while being kept horizontal.

  Therefore, thereafter, the stair step board 66 is supported on the lower edge of the lock gate 105 via the platform 100 in the same manner as in the case where there is a step, and the passenger gets on and off. In this case, the passengers go up and down through a flat ramp with no steps.

  According to the illustrated example, the raising / lowering cylinder 15 for raising / lowering the horizontal member 13, the raising / lowering passage 17, and the raising / lowering cylinder 18 for raising / lowering the raising / lowering passage 17 as in the conventional apparatus shown in FIGS. 16 to 18. Since it becomes unnecessary, the structure of the apparatus is simplified. Therefore, the apparatus can be reduced in size and weight, and the cost can be reduced.

  Further, since the operation of the lifting cylinder 15 and the hoisting cylinder 18 which have been conventionally required is not required when setting the apparatus, the entire operation is easy and preparation can be performed quickly. Further, since the undulating passage 17 as in the conventional apparatus is unnecessary and the weight supported by the lock gate 105 is only the weight of the stair passage 58, the load on the ship is reduced.

  Furthermore, when the inclination angle of the staircase passage 58 is small, the stair tread 66 can be used as a flat ramp, and the platform 100 can always be held horizontally, so that passengers can easily get on and off, and can get on and off smoothly. Can be done.

  In addition, the ship boarding / alighting apparatus of this invention is not limited to the above-mentioned embodiment, Of course, it can add various changes within the range which does not deviate from the summary of this invention.

It is a side view which shows an example of embodiment of the ship boarding / alighting apparatus of this invention. It is an enlarged side view of the stairway passage shown in FIG. FIG. 3 is a simplified plan view of FIG. 2. It is the IV section enlarged view of FIG. FIG. 5 is a plan view of FIG. 4. It is a VI-VI direction arrow line view of FIG. It is a VII-VII arrow line view of Drawing 6, and is a figure showing the state where a restrained member is not grasped. It is a VIII-VIII arrow line view of FIG. 6, and is a figure which shows the state by which the to-be-constrained member is hold | gripped. FIG. 2 is an enlarged side view of the staircase passage shown in FIG. 1, and is a side view showing a state where the staircase passage is upwardly inclined and a flat ramp is formed without a step on the staircase tread. It is the X section enlarged view of FIG. FIG. 2 is an enlarged side view of the staircase passage shown in FIG. 1, and is a side view showing a state where the staircase passage is a downward slope and a flat ramp without a step on the staircase tread. It is the XII section enlarged view of FIG. It is a side view of the horizontal holding means for hold | maintaining a platform horizontally in the ship boarding / alighting apparatus of this invention. It is an enlarged view of the buckling guide member shown in FIG. It is a XV-XV direction arrow directional view of FIG. It is a side view which shows an example of the conventional ship getting on / off apparatus. It is an expanded side view of the part of the stairway passage of the ship boarding / alighting device of FIG. It is a side view at the time of using the stair step board of the ship boarding / alighting apparatus of FIG. 16 in the state of a flat ramp.

Explanation of symbols

56 Ship side movable passage (frame)
58 Stairway 59 Stair frame 60 Horizontal pin (Pivot)
63 Cam link (switching means)
65 Link member 66 Stair stepping plate 77 Lever (switching means) (fixing and releasing means)
78 Locking member (switching means) (fixing and fixing release means)
81 Cylinder for lever (switching means) (fixing and releasing means)
84 Link member moving and fixing means (switching means)
87 Grasping arm (switching means) (link member moving and fixing means)
89 Clamp cylinder (switching means) (link member moving and fixing means)
90 Constrained member (switching means) (link member moving and fixing means)
92 Buckling prevention member (horizontal holding means)
95 Link member (horizontal holding means)
97 Bracket (horizontal holding means)
100 platform H step

Claims (9)

  A marine boarding / alighting device provided with a stairway that can be raised and lowered, wherein the staircase path includes a plurality of staircase steps arranged at predetermined intervals in the longitudinal direction, and a flat passageway that eliminates a step on the tread surface of the staircase stepboard. A marine boarding / exiting device comprising switching means for performing   A horizontal holding means is provided for holding the step surface of the platform provided at the tip of the stairway path substantially horizontally, even when the step surface of the stairway path has a level difference or a flat path without a level difference. The ship boarding / alighting device according to claim 1. A ship boarding / exiting device with a stairway that can be raised and lowered,
The stairway is
A staircase frame pivotably supported by a predetermined frame body;
A cam link that pivots on substantially the same axis as the pivot point of the staircase frame and protrudes downward;
A link member pivotally supported by the lower portion of the cam link and extending in the longitudinal direction of the staircase frame, and capable of being raised and lowered integrally with the staircase frame;
A plurality of stair treads arranged at predetermined intervals in the longitudinal direction of the staircase frame, wherein the upper part is pivotally supported by the staircase frame and the lower part is pivotally supported by the link member;
When the stair tread is used with a step on the tread, the cam link is locked. When the stair tread is used as a flat passage without a step on the tread, the cam link is engaged. Including fixing and releasing means for releasing the stop,
A marine boarding / alighting device characterized in that a parallelogram link is formed by the stair frame, link member, stair tread, and cam link.   4. The marine boarding / alighting device according to claim 3, wherein the fixing / unlocking means includes a lever pivotally supported by the frame and a locking member provided on the lever so as to be locked to the cam link. .   When the stair tread is used with no step on the tread, the link member on which the stair tread is pivotally moved to the frame side with the locking to the cam link being released by the fixing and fixing release means. The ship boarding / alighting device according to claim 3 or 4, further comprising a link member moving and fixing means for fixing to the staircase frame.   6. The marine boarding / alighting device according to claim 5, wherein the link member moving / fixing means includes an openable / closable gripping arm configured to grip a restrained member fixed to the link member.   The marine boarding / alighting device according to claim 3, further comprising horizontal holding means for holding the tread surface of the platform flat. The horizontal holding means is
A base end portion pivotally supported by the frame body and extending in the longitudinal direction of the staircase frame, and another link member different from the link member;
A bracket that is pivotally supported by the tip of the other link member and the tip of the staircase frame and to which a platform is attached,
The marine boarding / alighting device according to claim 7, wherein a parallelogram link is formed by the step frame, the other link member, and the bracket.   9. A ship boarding / exiting device according to claim 8, further comprising a buckling prevention member having an upper portion pivotally supported by the staircase frame and a lower portion pivotally supported by the other link member so as to prevent buckling of the other link member. apparatus.

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