JPH0115598Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a sloped ladder in a hold for ascending and descending in a ship's hold.

Conventional structure and its problems The vertical length of elevating devices installed in the holds of large cargo ships, such as hold ladders, is regulated by some regulations (for example, the Australian Port Cargo Handling Regulations), and therefore the holds are deep. In this case, it was necessary to provide an inclined section.

Conventionally, as shown in FIGS. 1 and 2, in a cargo hold 2 having a corrugated bulkhead 1, a recess 4 formed between protrusions 3 and 3 of the corrugated bulkhead 1 is covered by a protective wall 5. At the same time, there are a plurality of vertically inclined ladders 6 inside the protective wall 5 of the recess 4.
A plurality of landings 7 are provided to connect these inclined ladders 6, 6 to each other. In addition, 8 is an upper vertical ladder connecting the top landing 7 and the upper deck,
A lower vertical ladder 9 connects the lowest landing 7 and the bottom of the hold 2.

However, in such a conventional tilted ladder in the hold, the protective wall 5 protrudes greatly into the hold 2, which reduces the cargo loading capacity. Unable to get out, the inclined ladder 6 could not be used in the hold 2, which was half-loaded.

Therefore, there were cases in which the protective wall 5 was not provided, but
There is a large protrusion from the concave portion 4 of the inclined ladder 6, and there is a risk that it will be damaged by a bulldozer for work inside the warehouse or by cargo, and it has been difficult to reinforce it to the extent that it can withstand such damage.

Purpose of the invention The present invention solves the above-mentioned drawbacks of the conventional technology.It is possible to freely go in and out of a half-loaded warehouse, and the cargo capacity will not be reduced, and the warehouse will not be damaged by bulldozers, etc. The purpose is to provide a sloped ladder.

Structure of the Invention In order to achieve the above object, the inclined warehouse ladder of the present invention has a horizontal shaft body having one end provided on one side and a horizontal shaft body provided on the other side in a recess formed between the protruding parts of a corrugated bulkhead bent in the horizontal direction. The other ends are attached to the corrugated partition wall so as to be rotatable about an axis parallel to the horizontal shaft, and the one end is connected to the corrugated partition wall by engagement with a long hole provided in the recess. A pair of ladder units that can move in and out of the recess are provided, and a drive device is provided that reciprocates the pair of ladder units by a predetermined angle about the other end, and one of the pair of ladder units A platform is provided at one end of one of the ladder units so as to be rotatable over a predetermined angle and can be switched between a position in which it projects from the ladder unit and a storage position along the ladder unit. This is what I did.

Embodiment and operation Hereinafter, an embodiment of the present invention will be described based on FIGS. 3 to 5.

Fig. 3 is a longitudinal sectional view of an inclined ladder according to an embodiment of the present invention, Fig. 4 is a side view of one unit of the inclined ladder in the same warehouse, and Fig. 5 is a front view of the same. 12 is a protrusion of the corrugated bulkhead 10, 13 is a recess formed between both protrusions 12, 12, 14 is an inclined ladder in the hold, 15 is an upper vertical ladder, 16 is a lower vertical ladder, and 17 is a manhole. be.

The warehouse inclined ladder 14 has a plurality of units (two steps in this embodiment) in the vertical direction as shown in FIGS. 4 and 5, and 18 and 19 are ladder units. The ladder unit 18 includes three side plates 20, 21, 22 parallel to each other;
21 and tread plates 23 attached at appropriate intervals. Also, the other ladder unit 1
9 is similarly composed of side plates 24, 25, 26 and a footboard 27. A shaft 28 passing through the side plates 20, 21, 22 is fixed to one end of the ladder unit 18 in the horizontal direction, and the shaft 28 is attached to the side plates 24, 24 of the ladder unit 19,
Long holes 2 formed along the length direction in 25 and 26
9 is engaged. A shaft 30 passing through the side plates 20, 21, 22 and a shaft 31 passing through the side plates 24, 25, 26 are fixed to the other ends of the ladder units 18, 19. These shaft bodies 30, 3
1 is parallel to the shaft body 28, and both ends thereof are connected to bearings 32, 3 attached to the corrugated partition wall 10.
3, it is rotatably supported. 34 is a cylinder device rotatably attached to the corrugated partition wall 10, and its piston rod 34a
The tip is pin-coupled to a bracket 35 fixed to the side plate 21 of the ladder unit 18. Projections 20a and 22a are integrally formed at one end of the side plates 20 and 22 of the ladder unit 18, and the projections 20a and 22a extend from both ends of the shaft 36 parallel to the shaft 28. is rotatably supported. A platform 37 is fixed to the shaft body 36, and a stopper (not shown) for regulating the range of rotation of the platform 37 is fixed to the projecting portions 20a, 20a. Furthermore, a fixed handrail 38 is provided on the side plates 24 and 25 of the ladder unit 19.
are attached, and removable and disassembleable handrails 39, 40 are attached to the side plates 20, 21 and platform 37 of the ladder unit 18. These handrails 39, 40 include, for example, a plurality of columns 41, 42 that can be inserted and removed, and these columns 41, 4.
2, and cable bodies 43 and 44 that are removably engaged with the cable. Platforms 45 and 46 are fixed to the corrugated partition wall 10 and are installed at positions corresponding to the other ends of the ladder units 18 and 19. Note that the handrails 38 to 40 are shown with dashed lines to make the drawing easier to understand.

Hereinafter, the effects of the above configuration will be explained. When using the inclined ladder in the warehouse, the cylinder device 34
The piston rod 34a is extended, and the ladder units 18 and 19 are tilted as shown by the solid line in the figure. When not in use, the handrails 39 and 40 are first removed and the platform 37 is rotated as shown by the imaginary line in FIG. Next, when the piston ring 34a of the cylinder device 34 is retracted, the shaft body 28 moves within the elongated hole 29, the ladder unit bodies 18 and 19 become straight as shown by the imaginary line, and the inclined ladder in the warehouse becomes a corrugated partition. This means that it is completely housed in the recess 13 of No. 10. When reusing, first remove the piston rod 34 of the cylinder device 34 in the opposite way to the above procedure.
A is extended to tilt the ladder units 18, 19, then a handrail 39 is attached, then the platform 37 is rotated, and then a handrail 40 is attached.

In this way, since there is no protective wall 5 like in the past,
Since it is possible to enter and exit the cargo hold 11 in a half-loaded state, and it can be completely stored in the recess 13 in the stowed state, there is no reduction in the amount of cargo loaded into the cargo hold 11, and there is no damage caused by bulldozers, cargo, etc.

Effects of the invention As explained above, according to the invention, when the ladder unit is rotated around the other end by the drive device in normal use, the horizontal shaft is moved along the elongated hole at one end. As a result, the pair of ladder units are stored in a straight line within the recess, and simply by rotating the platform by a predetermined angle, the storage position can be changed to follow the ladder units, and the corrugated wall can be moved. It can be placed inside the recess. Therefore,
It has an extremely simple configuration, the rotation stroke of the ladder unit is small, and the posture can be easily changed in a short time, and when stored, it can be completely stored in the recess of the corrugated wall. In addition, since there is no protective wall, the slope ladder can be used even in a half-loaded cargo hold, and in the stowed state, it can be completely stored in the recess of the corrugated bulkhead 10, so there is no reduction in the amount of cargo loaded into the cargo hold, and the bulldozer It will not be damaged by cargo or cargo.

[Brief explanation of drawings]

Figure 1 is a vertical cross-sectional view of a conventional warehouse slope ladder, Figure 2
The figure is a sectional view taken along the - line in Figure 1,
The figure is a longitudinal sectional view of a tilted ladder in a warehouse according to an embodiment of the present invention, FIG. 4 is a side view of one unit of the tilted ladder in the warehouse, and FIG. 5 is a front view of the same. 10...corrugated partition, 12...protrusion,
13... recess, 18, 19... ladder unit, 28
... Shaft body, 29 ... Long hole, 34 ... Cylinder device, 37 ... Platform.

Claims (1)

[Scope of utility model registration request] A recess formed in a protruding section of a corrugated partition wall bent in the horizontal direction has one end connected to each other by engagement of a horizontal shaft provided on one side and a long hole provided on the other side, and the other end A pair of ladder units are provided, each of which is rotatably attached to the corrugated partition wall about an axis parallel to the horizontal shaft body, and whose one end can move in and out of the recess. A driving device is provided for reciprocating a pair of ladder units by a predetermined angle around the other end thereof, and the drive unit rotates the one end of one of the pair of ladder units by a predetermined angle. A tilted ladder in a warehouse, characterized in that it is provided with a platform that can be attached and switched between a position in which the ladder unit protrudes from the ladder unit body and a position in which it is stored along the ladder unit body.