JPS5918087A - Gangway ladder device - Google Patents

Abstract

PURPOSE:To position a handrail at a predetermined height in cooperation with rise and fall of a gangway ladder, by mounting the handrail through a plurality of rotatable handrail posts on the gangway ladder which may be raised and lowered by a davit, and engaging a bracket at the lower portion of the davit with an elongated groove formed at an end of a lever connected to the handrail post. CONSTITUTION:A plurality of handrail posts 4 rotatably supported to frames 1a and 1'a at its one end and to a handrail 3 at its other end are mounted on a gangway ladder body 1 designed to be raised and lowered by a rope of a shieve device of a davit arranged at a suitable position of a hull side. A handrail setting lever 7 is interlocked to a rotary shaft 8 on the frame 1'a side of one of the handrail posts 4. A pin 11 at the lower end of a bracket 10 provided on the lower side of the davit 2 are slidably engaged with an elongated hole 7a formed at an end portion of the lever 7. With this arrangement, the handrail 3 is set at a predetermined height in cooperation with rise and fall of the gangway ladder by the davit 2.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to improvements in ladder devices for ships, offshore structures, pilot ladders, and other types that are retracted when not in use.

Vertical retractable side ladders are constructed so that when in the retracted state, the handrail is removed together with the handrail post, or the handrail is folded down via a hinge to the ladder body; The R-space is small and is usually installed next to a living area such as a bulk carrier.

In recent years, as the number of crew members has decreased, other equipment has been
Although streamlining is progressing, such as installing and removing removable handrail posts on side ladders and raising and lowering collapsible handrail posts, the work still relies on manual labor. Since this is inefficient and dangerous, there has been an increasing demand in the industry for automation of work in order to improve work efficiency and ensure safety.

The present invention has been developed in response to the demands of the industry, by mechanically raising and lowering the collapsible handrail posts of the gangways of ships, etc., where automation is lagging behind, to create a gangway with high work efficiency and high safety. This device was proposed for the purpose of providing a device for a gangway device that has a gangway main body with a handrail that is raised and lowered via the rope of a pulley device of a davit installed at an appropriate position on the side of the ship. Between the frame and the handrail, a plurality of sets of handrail posts are provided at predetermined intervals, one end of which is rotatably supported by the frame and the other end of which is rotatably supported by the handrail, and the base end is connected to the gangway. The engaging pin at the lower end of the bracket attached to the lower side of the davit is slidably inserted into the long groove provided at the tip of the davit, which is rotatably supported by the frame of the main body, and A gangway device characterized in that one end of one set of handrail posts of the plurality of sets of handrail posts is integrally connected to the base end of the handrail lever by a connecting shaft at an appropriate angle. This is related to.

Hereinafter, the apparatus of the present invention will be specifically explained with reference to the embodiments shown in FIGS. 1 to 5. In these nine figures, 1 is the main body of the gangway, 2 is a well-known davit installed at a suitable position on the side of the ship, and the davit 2 is equipped with a pulley device for raising and lowering the main body 1 of the main ladder and a rope 2α. Reference numerals 6 and 6' denote handrails formed on both sides of the gangway main body 1 when it is in use;
A plurality of sets of handrail posts 4° 4' are interposed at predetermined intervals along the longitudinal direction of the main body 1 between the left and right frames i a and 1'a of the gangway main body 1. And that handrail pillar 4
, 4' are rotatably connected to both side frames 1a, 1'a of the trunk main body 1 via a pin 5, and the other ends are connected to both side handrails via a pin 6. 6' is rotatably supported. 7 and 7' have a long groove 7a with an open end at the tip, and the base end is rotatably attached to a bracket B provided on the frame 1''+1'a of the gangway main body 1 via a pin 8. This is a lever for raising and lowering the handrail posts 4, 4' which are supported by a shaft, and the long groove 7a of the lever 7, 7' has a pin 11 provided at the lower end of the bracket 10 attached to both sides of the lower side of the davit 2. are slidably fitted in. Reference numeral 9 indicates the base ends of the levers 7 and 7' for raising and lowering them, and the handrail posts 4, 4' of the - pair.
A connecting shaft that integrally connects one end of □ at an arbitrary angle, 1
Reference numeral 2 denotes a stopper provided on the frame of the gangway main body 1, as shown in FIG. 4, and the stopper 12 has the role of maintaining the handrail pillars 4, 4' in a predetermined upright posture.

One embodiment of the device of the present invention is constructed as described above, and when the trunk main body 1 is lowered via the rope 2a of the pulley device of the davit 2, the lifting lever 7 is moved by the weight of the trunk main body 1. 7' gradually rotates clockwise about the pin 8 while being guided by the pin 11 of the bracket 10 of the davit 2 through the long groove 7α. At this time, one set of handrail posts 4, 4' integrally connected by the raising/lowering lever 7.7' and the connecting shaft 9 also rises around the pin 5, so that the other set of handrail posts 4, 4 ' also stands up in the same way, and the handrail 6', which is connected to the handrail pillars 4 and 4' with pins 6, is connected to the frame 1α of the gangway main body 1 by the handrail pillars 4 and 4'.
While remaining parallel to 1'a, it is pushed upward,
Move toward a predetermined height position. When the gangway main body 1 is lowered to the operating position shown in FIG.
4' is completely erected, and the handrails 6.3' are pushed up to a predetermined height position to form handrails of a predetermined height on both sides of the gangway main body 10.

In addition, the engagement pin 11 and the long groove 7 of the raising/lowering lever 7.7'
In the state in which the handrails 6, 6' and each handrail post 4, 4' are disengaged from each other, the center of gravity of the handrail 6, 6' and each handrail post 4, 4' is such that the handrail post 4, 4' is connected to the pin 5.a.
8 is in the position where it is turned in the direction of force, and (the weight of the lever 7.7') is in the position where it is turned counterclockwise.
The moment caused by the handrail 6' and the handrail pillars 4 and 4' is larger. ) This is to prevent the handrail posts 4, 4' from falling counterclockwise (to the left) in the state shown in Figure 4. Further, as the gangway main body 1 is further lowered from the state shown in FIG.
Even if a crew member climbing up and down the gangway main body 1 applies force to the upper left (to the left) on the handrails 6, 6' in order to move to the right side of the ship, the handrail posts 4, 4' will not move counterclockwise. There is no risk of it rotating. However, for safety, the gangway body 1
When the handrail pillars 4, 4' are lowered to the position where they will be used, insert an appropriate spacer (pin, bolt, nut, etc.) between the handrail pillars 4, 4' and the stopper 12 to ensure that the handrail pillars 4, 4' are not It is desirable to avoid falling in the direction of tears (to the left). It goes without saying that when lifting the gangway main body 1, the first step is removed.

In this case, the gravity of the gangway main body 1 acts as a force to rotate the raising and lowering levers 7 and 7' clockwise by the engaging pin 11, so even if the connecting parts of the pins 5 and 6 are slightly worn, the handrail pillar 4 and 4' will definitely stand up.

Further, the handrails 6, 6' and each handrail post 4, 4', together with the gangway main body 1, are inclined to the right in FIG.

The handrail posts 4, 4' are pressed against the stopper 12 by the weight of the handrail posts 4, 4' and continue to maintain their upright posture, but the handrails 6, 3' are In addition to the force in the direction away from the gangway main body 1, the handrails 6, 6'
Since it also receives its own axial force, even if the handrails 6, 6' are made of elongated steel pipes, the handrails 6, 6' will not bend and will be reliably pushed up to a predetermined height position. .

Further, since the long groove 7α at the tip of the raising/lowering lever 7゜7' is open and this portion is formed in the shape shown in Fig. 5, the separation between the bottle 11 and the long groove 7a is smooth. It is done. Also, a pair of handrail columns 4, 4 by the connecting shaft 9
1 and the lever 7.7' (see FIG. 4) is set appropriately, the long groove 7a of the lever 7.7' as shown in FIG. Since the force acting on the handrail column 4, 4' is effectively applied to the handrail post 4, 4',
The thrust force in the axial direction of ' is also increased, and reliable operation can be obtained until the final stage (the stage when the handrail 6' reaches a predetermined height). In addition, the handrail posts 4, 4' are designed to stand up as the gangway main body 1 descends and tilts, so in the final stage of the handrail posts 4, 4' standing up, the weight of the handrail posts 4, 4' stands up. It contributes to the movement and is securely pressed against the stopper 12 to maintain its upright position. Furthermore, by setting the length of the bin 11 to be long, even when the ship body is shaken, the engagement relationship between the bin 11 and the long groove 7a of the raising lever 7.7' is maintained, and the handrail post 4.4 ′ can be ensured.

Next, when the gunwale main body 1 is pulled up by the davit 20 lowso 2a in order to store the gunwale main body 1, the pin 11 approaches the long groove 7a of the raising lever 7.7', and gradually the long groove 7
a and slides while pressing one side of the long groove 7a (the left end surface in Fig. 4), so the pressing force causes the lifting lever 7.7' to move counterclockwise around the pin 8. Rotate. As the lifting lever 7.7' rotates counterclockwise, a pair of handrail posts 4, 4, which are integrally connected to the lifting lever 7.7' by a connecting shaft 9, ' and the other sets of handrail posts 4, 4' also rotate counterclockwise, so the handrail posts 4, 4' are connected to the handrail posts 4, 4' by pins 6.
is drawn toward the side of the gangway main body 1, and finally reaches the state shown in FIG. 6, the lifting operation of the gangway main body 1 is completed, and then it is stored.

Since the device of the present invention has the above-described configuration and function, according to the present invention, by simply lifting and lowering the gangway main body 1, the handrail can be automatically moved to a predetermined height position. This has the practical effect of realizing a gangway device with good work efficiency and high safety.

[Brief explanation of the drawing]

The attached drawings are schematic explanatory views of one embodiment of the present invention, in which Fig. 1 is a perspective view of the whole, Fig. 2 is a plan view of the main parts in the salvaged state, and Fig. 6 is an I 4 is a side view of the device in use, and FIG. 5 is an explanatory view of the relationship between the long groove at the tip of the raising/lowering lever and the bottle. 1: Gangway body, 1 a+ 1'a: Frame, 2: Davit, 2a: Rope, 6, 6': Handrail, 4, 4':
Handrail post, 5.6.8: Bin, 7, 7': Raising/lowering lever, 7a: Long groove, 9: Connection shaft, 1D nib bracket, 11
: Engagement pin, 12: Stopper.

Claims (1)

[Claims] In a gangway device having a handrail-equipped gunwale body that is raised and lowered via a rope of a davit pulley device installed at a suitable location on the side of the ship, one end is connected to the frame between the frame of the gunwale body and the handrail. A plurality of sets of handrail pillars are provided at predetermined intervals, the base end of which is rotatably supported by the frame of the gangway main body, and the other end of which is rotatably supported by the handrail. The engaging pin at the lower end of the bracket attached to the lower side of the davit is slidably inserted into the long groove provided in the above-mentioned long groove, and the plurality of sets of handrail posts are inserted into the base end of the lifting lever. A gangway device characterized in that one end of one set of handrail pillars is integrally connected by a connecting shaft at an appropriate angle.