JPH05338746A - Air bearing type cargo handling device for container ship - Google Patents

Abstract

PURPOSE:To safely and quickly load and unload a lot of containers on a quay with a small number of workers by providing a plurality of air bearing unit plates and a plurality of container pallets having air cushion, on which a plurality of containers are placed. CONSTITUTION:In cargo loading, air bearing unit plates 6 are arranged on the pallet passage in a container yard, ramps, and upper decks and high pressure air is supplied to these air bearing unit plates 6 beforehand. Since when containers 3 are placed on pallets 4 on the pallet passage using a crane, the pallets 4 floats slightly due to the action of the air cushion formed under the pallet, the pallets on which the container is placed smoothly moves when lightly pushed by a worker by hand. Therefore, the container can be moved safely and quickly to the specified position on the upper deck along the arranged air bearing unit plates 6.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air bearing type cargo handling device for container ships.

[0002]

2. Description of the Related Art Although the size of a container carried by a container ship is large or small, the size of a long container which is generally used is usually 8'6 "x 8'6" x 20 'and its weight is It is about 7T. The loading and unloading of a long container of this type on the quay is usually performed by using a container crane movably arranged along the quay as shown in the front view and side view of FIG. ,
The spreader 01 must be reciprocated for each container, and it takes a considerable amount of time to position and detect the spreader 01 and the container 02 each time.

[0003]

On the other hand, it has been considered to increase the speed of a container ship in order to speedily transport a large amount of goods by sea, but even if the speed of the container ship is increased, Since it takes a lot of time for cargo handling work on the quay, there is a limit to the reduction of cargo handling time by conventional means, and a new rationalization method for large-scale transportation of goods by sea is being studied.

The present invention has been proposed in view of the above circumstances, and is an economical container ship air system capable of safely and promptly, labor-saving and labor-saving for loading and unloading a large number of containers on the quay. An object is to provide a bearing type cargo handling device.

[0005]

To this end, the present invention is directed to a plurality of containers which are laid on the horizontal upper deck of a container ship that berths at a low water level and then bottoms out, and on the quay where the container pallet moves. An air bearing unit plate, which will be described later, and high-pressure air filling passages for introducing high-pressure air supplied from the outside are formed vertically and horizontally inside, and are vertically and horizontally opened at appropriate intervals on the horizontal upper surface to communicate with the high-pressure air filling passages, respectively. Slotted valve seat of a relatively narrow width with a plurality of lengths L and opening width D _U , a relatively wide interior having a symmetrical cross section of length L and width D _L forming the lower part of each slot Each has a base slightly smaller than the opening width D _U of the above-mentioned slot and is rounded at the upper end of a horizontal round bar loosely inserted into the chamber and having a width D _M in the relationship of D _L > D _M > D _U. On top of A movable valving element having a ridge having an isosceles triangular cross section having an end protruding over the entire length L, and the ridge of the movable valving element is mounted in the inner chamber of the slot upward from the opening end of the slot. An air bearing unit plate with a large number of irregularly shaped return valves, which consist of springs that bias the movable valve element upward in a protruding form, and a relatively short rubber plate that surrounds the outer periphery of a horizontal rectangle. An air cushion is formed between the lower surface and the air bearing unit plate by suspending a flexible airtight curtain, and a plurality of container pallets for mounting a plurality of containers on the upper surface are provided.

[0006]

According to this structure, high pressure air is supplied in advance to the plurality of air bearing unit plates laid on the pallet passage and the upper deck during loading. At this time, since the movable check valves of the air bearing unit plates are all closed by the action of the built-in spring, the high pressure air does not escape to the outside, and the internal chamber of each slot is filled with the high pressure air. Here, in the air bearing unit plate of the portion where the pallet is placed, the upper end of the protruding portion of the check valve element protruding from some of the slots comes into contact with the bottom surface of the pallet and is pushed slightly downward. The high-pressure air in the slot inner chamber partially leaks upward, and an air cushion is formed in the area surrounded by the rubber skirt on the bottom surface of the pallet, and the pallet floats on this air cushion and is pressed lightly by hand. This makes it easy to move back and forth and left and right. In this way, the container-mounted pallet in the container yard is temporarily placed on the air bearing unit plate by the crane and then moved lightly and manually so that it can be easily moved to the upper deck of the container ship. .. The procedure for moving the container-mounted pallets on the container ship to the container yard can be done in the same manner as above.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view showing a state during cargo handling, and FIG.
II-II arrow sectional view of the air bearing unit plate of FIG.
2 is an enlarged view showing the cushion air check valve structure of FIG. 2, and FIG. 4 is a partial front view taken along the line IV-IV of FIG.

First, in FIGS. 1 and 2, reference numeral 1 denotes a container ship which is docked on a quay 2 and then bottomed by ballasting. The container ship 1 has a flat upper surface in front of an upper structure erected at the stern. It is a barge-type container ship with small deck and has 8'6 "x 8'6" x 2 on this upper deck.
Twenty long containers 0 ′ are mounted vertically and horizontally closely in two layers via each pallet. Here, the containers 3 are fixed to each other by conventional locking means, the containers of the first layer are also fixed to the pallet by conventional means, and the pallet 4 is fixed at a predetermined position on the upper deck by a plurality of removable stoppers. ing.

Reference numeral 6 is an air bearing unit plate laid on the upper deck, and high pressure air from an air compressor mounted on the ship enters the high pressure air inlet 7 at the front end from below, and two flows through an air duct 8 there. The high-pressure air that has branched into the passage and has flowed into both passages is further divided into two as shown by the dotted lines, and flows into the high-pressure air pipe 9 inside the air bearing unit plate. Reference numeral 10 denotes a vertical slot opening and a horizontal slot opening vertically and horizontally formed on the upper surface of the air bearing unit plate 6, and each slot opening internal chamber 11 has
As shown in the partially enlarged view of FIG. 3, a drop 13 is formed by projecting a rounded isosceles triangular section 13 on the upper part of a round bar 12 having a circular cross section and having a length L. A horizontal check valve body 14 in the shape of a modified round bar having a circular cross section is inserted.

Here, as shown in a partially enlarged view of FIG.
If the slot opening width is D _U , the width of the slot inner chamber is D _L , and the outer diameter of the round rod portion 12 of the check valve body 14 is D _M , there is a relation of D _L > D _M > D _U , where L is a slot. It is the length of the opening, and the length of the check valve body 14 is substantially equal to L. Reference numeral 15 is a spring for pressing the round bar portion 12 against the inner seat portion of the slot opening 10 with the protruding portion 13 of the check valve body 14 exposed upward from the slot opening 10. The lower end of the spring 15 is a slot. It is held by a retainer ridge portion 16 protruding from the central portion of the inner chamber 11, and each slot inner chamber 11
Communicates with the high-pressure air pipe 9.

Next, in FIG. 4, 22 is a plurality of rectangular lamps inserted to close the upper end of the opening between the quay 5 and the container ship 1. As to form a slender long lamp having a length substantially equal to the entire length of the upper deck of the container ship. Two
Reference numerals 3 and 24 are vertical rails laid on the quay 5 and step portions 25 and 26 formed at the corners of the upper end of the container ship 1, and 27 and 28 are provided on both sides of the lower surface of the ramp 4 so as to project downward. At the wheels, the ramp 22 is movably supported along the quayside rail 23 and the container ship side rail 24 through a plurality of pairs of wheels 27, 28 arranged at appropriate longitudinal intervals, and at a predetermined position. It is supposed to be locked. Reference numeral 29 denotes a vertical shaft type hydraulic cylinder rotatably supported by a vertical shaft hinge 32 on the side wall of the quay within a range of ± 90 °, and a lamp elevating table 33 for vertically moving the lamp 22 is projectingly provided at an upper end thereof. ing.

Reference numeral 34 designates a hydraulic cylinder for raising and lowering the hull, which is erected upright in a plurality of pits 35 which are concavely symmetrically formed on the underwater shelf of the quay 5, and has upper ends each of which is a rest for abutting a bottom plate of a container ship. 36 is projected. The container ship bottoms by ballasting when it comes to berth, and its upper deck is at the same level as the upper surface of the quay. At that time, fine adjustment of the upper deck level is performed by the ballasting and hydraulic cylinders 34 for raising and lowering the hull.

In such a structure, as shown in FIG. 2, an airtight and flexible curtain made of a thin rubber plate having a cross section curved inward in an arc is vertically provided on the outer periphery of the pallet 4. Therefore, in the portion of the air bearing unit plate 6 on which the pallet 4 is mounted, the projection 13 of the check valve body 14 is pushed by the lower surface of the pallet 4 and slightly lowers against the spring 15, so that the slot opening 10 and Check valve body 14
There is a space between the high pressure air and the high pressure air in the slot inner chamber 11 and the high pressure air escapes upward through the space. As a result, an air cushion is formed on the lower surface of the pallet 4, and the pallet 4 is thus formed. It becomes a shape that floats on the cushion. Therefore, the pallet can be easily moved in the desired direction with only a light push of the operator.
In the portion of the air bearing unit plate where the pallet 4 is not mounted, the check valve body 14 is urged upward by the high pressure air in the slot inner chamber 11 to close the slot opening 10, so that the high pressure air does not leak.

Therefore, at the time of loading, the air bearing unit plate 6 is laid on the pallet passage, the ramp and the upper deck of the container yard in advance, and high pressure air is supplied thereto. Then, when the container is placed on the pallet placed on the pallet passage in the container yard using a crane, the air cushion formed on the bottom surface of the pallet slightly lifts the pallet, so the operator can press it lightly by hand. Since the container-mounted pallet moves lightly, it can be safely and quickly moved to a predetermined position on the upper deck along the laid air bearing unit plate. The same applies to the wholesale shipment of containers.

According to such means, the following effects can be obtained. (1) During loading and unloading, the container ship bottoms out, and its upper deck, ramp, and container yard are all on the same horizontal plane, so there is no change in the upper deck position due to tides or wind waves, and it is stable and safe. The container can be loaded and unloaded. (2) If desired, the container-mounted pallets can be moved one by one, or, if necessary, a plurality of containers can be moved in parallel at the same time, so that a large number of containers can be quickly loaded and unloaded. (3) The pallet is large if it is docked so that the clearance between the quay and the container ship is extremely small.
It is possible to traverse the clearance, without the need for a ramp.

[0015]

In summary, according to the present invention, a plurality of airs, which will be described later, are laid on the horizontal upper deck of a container ship that berths at a low water level and then bottoms, and on the part where the container pallet moves on the quay. The bearing unit plate and the high-pressure air filling flow paths for introducing the high-pressure air supplied from the outside are formed vertically and horizontally inside, and are vertically and horizontally opened at appropriate intervals on the horizontal upper surface to form a plurality of long lines communicating with the high-pressure air filling flow paths. A narrow rectangular slot / valve seat having a length L and an opening width D _U , and a relatively wide inner chamber having a symmetrical cross section of a length L and a width D _L forming the lower part of each slot. It is loosely inserted and has a base slightly smaller than the opening width D _U of the above slot at the upper end of a horizontal round bar having a diameter D _M in the relationship of D _L > D _M > D _U and rounded. Has an upper end A movable valve body having a projection having an isosceles triangular cross-section protruding over the entire length L, and a shape in which the projection of the movable valve body is elastically mounted in the inner chamber of the slot and projects upward from the opening end of the slot. The air bearing unit plate that has a large number of odd-shaped return valves consisting of springs that urge the movable valve element upward, and a relatively short rubber plate that surrounds the outer periphery of the horizontal rectangle and is flexible and airtight By installing a plurality of container pallets that form an air cushion between the lower surface and the air bearing unit plate by hanging the curtain and mount multiple containers on the upper surface, it is possible to load a large number of containers on the quay. Further, the present invention is very useful industrially, because an air bearing type cargo handling device for a container ship that can carry out a wholesale load safely, quickly, labor-saving and labor-saving is obtained. It is.

[Brief description of drawings]

FIG. 1 is an overall perspective view showing a container ship during container loading and unloading.

FIG. 2 is a sectional view of the air bearing unit plate of FIG. 1 taken along the line II-II.

FIG. 3 is an enlarged view showing a check valve structure for cushion air in FIG.

FIG. 4 is a partial front view taken along the line IV-IV in FIG.

FIG. 5 is a side view and a front view showing a conventional container crane.

[Explanation of symbols]

 1 Container Ship 2 Quay 3 Container 4 Pallet 5 Curtain 6 Air Bearing Unit Plate 7 High Pressure Air Inlet 8 Air Duct 9 High Pressure Air Piping 10 Slot Opening 11 Slot Inner Chamber 12 Round Bar 13 Projection 14 Check Valve 15 Spring 16 Retainer Protrusions 22 Ramps 23, 24 Rails 25, 26 Steps 27, 28 Wheels 29 Hydraulic cylinders (for raising and lowering the ramp) 32 Vertical hinges 34 Hydraulic cylinders (for raising and lowering the hull) 35 Pits 36 Rests

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Hajime Komatsu 1-1, Atsunoura-machi, Nagasaki-shi, Nagasaki Mitsubishi Heavy Industries, Ltd. Nagasaki Shipyard (72) Hideo Yamaga 5-6-4 Tsukiji, Chuo-ku, Tokyo Mitsui & Co., Ltd. (72) Inventor Yasuo Terasawa 5-6-4 Tsukiji, Chuo-ku, Tokyo Mitsui & Co., Ltd. (72) Inventor Fumio Maruyama 5-6-4 Tsukiji, Chuo-ku, Tokyo Mitsui & Co. Inside the ship company

Claims (1)

[Claims] 1. A plurality of air bearing unit plates, which will be described later, laid on the horizontal upper deck of a container ship that berths with small water and then bottoms, and on the part where the container pallet moves on the quay. A high-pressure air filling flow path for introducing the supplied high-pressure air is formed vertically and horizontally inside, and a plurality of lengths L and opening widths D _U that are opened vertically and horizontally on the horizontal upper surface at appropriate intervals and communicate with the high-pressure air filling flow path, respectively. Slotted valve seat having a relatively narrow width and a relatively narrow width, and each of which is loosely inserted into a relatively wide internal chamber having a symmetrical cross section of length L and width D _L which forms the lower part of each slot D
_L has a base slightly smaller than the opening width D _U of the above slot and a rounded upper end at the upper end of a horizontal rod having a diameter D _M in the relationship of _L > D _M > D _U A movable valve body having a projection having an equilateral triangular cross section projecting over the entire length L, and a projecting projection of the movable valve body projecting upward from the opening end of the slot by being mounted in the inner chamber of the slot. A flexible airtight curtain such as an air bearing unit plate having a large number of irregularly shaped return valves, which are springs for urging the movable valve body upward, and a relatively short rubber plate surrounding the outer periphery of a horizontal rectangle. An air cushion is formed between the lower surface and the air bearing unit plate by vertically arranging a plurality of container pallets to mount a plurality of containers on the upper surface. Bearings type cargo handling equipment.