JPH08291514A - Unloading method and unloading equipment for sediment carrying vessel - Google Patents

Abstract

PURPOSE: To take a large capacity of sediment from a sediment carrying vessel in a short time without a sediment landing machine. CONSTITUTION: A first lock gate 102 is opened to permit a sediment carrying vessel 1 to enter a dry dock 101, and after the first lock gate 102 is closed, sea water in the dry dock 101 is discharged to the sea by a drainage pump 105 to lower the sediment carrying vessel 1. The ship's bottom is supported on a roller 107a in a first ship transfer means 107, and after the sea water in the dry dock 101 is completely discharged, a second lock gate 104 is opened and the sediment carrying vessel 1 is horizontally transferred on rollers 107a, 109a of first and second ship transfer means 107, 109 into an unloading dock 103. The sediment 3 which is dropped between two lines of rollers 109a of a second ship transfer means 109 by opening the tank bottom of each sediment tank 11 in the ship is accepted by a sediment continuous transfer means 11 just under the means to be transferred to a designated place on the ground.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a technique for unloading earth and sand from a earth and sand carrier that carries earth and sand containing wastes to a landfill or the like.

[0002]

2. Description of the Related Art Conventionally, when loading and unloading earth and sand containing wastes on a sea by a sand carrier, the bottom of a sand tank opens as a unloading work from the sand carrier to the landfill. Unless it is possible to directly unload the sediment using a type of sediment carrier, unload the sediment from the docked sand carrier using a landing machine such as a grab bucket or backhoe, or install a belt conveyor on the sediment carrier. The method of mounting and unloading via this belt conveyor is common.

[0003]

According to the above-mentioned conventional unloading techniques, the following problems are pointed out. (1) Method of using earthmoving machines such as grab buckets and backhoe excavators Since the sediment transport capacity per one time in grab buckets and backhoe excavators is small, it takes too much time to unload a large volume. It is possible to manufacture a hoisting machine with a large transport capacity per operation, but it is not realistic considering workability and economic efficiency. (2) Method of using a belt conveyor mounted on a sediment carrier A means of transferring sediment to the belt conveyor is also required, and in this case also, it takes a long time to unload a large volume.

The present invention has been made under the circumstances as described above, and its technical problem is that a large-capacity sediment from a sediment carrier can be delivered in a short time without using a hoisting machine. It is to be able to unload.

[0005]

The above-mentioned technical problems are as follows.
The present invention can effectively solve the problem. That is, the method of unloading from a sediment carrier according to the present invention, the bottom open type sediment carrier with a gate door provided at the bottom of the sediment tank into which the sediment is loaded is entered into the dry dock, and then this dry dock By water-tightly closing and draining the inside, the earth and sand carrier is lowered, and while moving the earth and sand carrier that has descended to a predetermined height, it is moved from the dry dock to the unloading dock adjacent to it, In this unloading dock, the gate door at the bottom of the tank of the earth and sand carrier is opened to drop and discharge the earth and sand from the earth and sand tank, and the falling earth and sand is continuously transferred to a predetermined place on the ground.

Further, in order to realize the above-mentioned unloading method, the sediment unloading equipment for a sediment carrier according to the present invention is equipped with an open-bottom type sediment carrier having a gate door provided at the bottom of the sediment tank in which the sediment is loaded. A navigable dry dock, a first lock that can seal the ocean side entrance of the dry dock, an unloading dock that is connected to the dry dock and can accommodate the sediment carrier, the dry dock and the unloading dock A second lockable gate between the dry dock, a drainage means for discharging seawater in the dry dock and a water injection means for injecting water into the dry dock, and the sediment carrier arranged on the bottom of the dry dock. Between the unloading dock and the first ship transfer means for horizontally transferring the unloading dock, and the unloading dock at the same level as the first ship transfer means to move the earth and sand carrier to the dry dock. Second ship to be transported horizontally Comprising a feed means, and a sediment continuous transfer means are continuously disposed toward the ground from the culvert bottom of the unloading dock. In the above-mentioned structure, the first and second ship transfer means are composed of, for example, a large number of rollers arranged in two rows at predetermined intervals in the transfer direction and supporting the bottoms of both sides of the gate door of the earth and sand carrier, , The earth and sand continuous transfer means is, for example, a first belt conveyor arranged substantially horizontally below the second ship transfer means, and extends diagonally in the unloading dock from the lower end of the first belt conveyor. It consists of multiple belt conveyors, including a second belt conveyor reaching the ground.

[0007]

In the unloading equipment for a sediment carrier according to the present invention, the first lock is a watertight door that dams the seawater on the outside (ocean side) when the inside of the dry dock is drained, and the second lock is This is a watertight door that unloads seawater in the dry dock and dams it against the dock. The dry dock is a dock for lowering the loaded sand carrier by draining or pouring water, or for lifting the unloading sand carrier to the same level as the tide level of the ocean.The unloading dock is the dry dock. It is a dock for unloading sediment from a sediment carrier that has been moved via the.

The sediment carrier that has entered the dry dock from the first lock moves down the dry dock by closing the first lock and draining the dry dock, and eventually the first ship is transferred. Supported by means. Next, the second lock is opened, and the earth and sand carrier is horizontally transferred from the first ship transfer means to the second ship transfer means in the unloading dock. When the earth and sand carrier is completely stored in the unloading dock, the gate door at the bottom of the tank is opened to drop and release the earth and sand from the earth and sand tank inside the ship. The second ship transfer means is composed of, for example, a large number of rollers arranged in two rows that support the bottom of the ship, which are located on both sides of the gate door of the earth and sand carrier, so that the earth and sand pass between the roller rows without interruption. To fall.

The earth and sand dropped from the earth and sand tank of the earth and sand carrier are received by the earth and sand continuous transfer means arranged continuously from the bottom of the dock of the unloading dock to the ground, and by the operation of the earth and sand continuous transfer means. Transferred to the ground continuously.
Typically, the earth and sand received by the first belt conveyor arranged below the second ship transfer means is transferred from the lower end of the second conveyor to the second belt conveyor diagonally extending in the unloading dock. , Transfer to the ground by this second belt conveyor.

The sediment carrier that has discharged the sediment in the sediment tank is horizontally transferred from the second ship transfer means in the unloading dock to the first ship transfer means in the dry dock. After that, if the second lock is closed and water is poured into the dry dock, the sediment carrier will rise as the water level in the dry dock rises, so open the first lock when the water level is the same as the ocean. Will allow you to sail to the ocean.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment of the present invention will be described below with reference to FIGS. 1 to 4. Reference numeral 1 is a bottom-opening type earth and sand carrier, and 2 is a tugboat for towing the earth and sand carrier 1. Is. As shown in FIGS. 3 and 4, the earth and sand carrier 1 includes a plurality of earth and sand tanks 11 in which earth and sand 3 including landfills for landfill and the like, and a gate door provided at the bottom of each of the earth and sand tanks 11. The gate doors 12 are provided side by side at the central portion in the width direction of the ship bottom 13 from the bow to the stern.

As shown in the perspective view of FIG. 1 and the cross-sectional view of FIG. 2, the sediment carrier 1 can enter the equipment for unloading the sediment 3 loaded in the sediment tank 11 of the sediment carrier 1. A dry dock 101 of a size, a first lock 102 that can seal the ocean side entrance of the dry dock 101, and a sediment carrier 1 that is connected to the dry dock 101 toward the opposite side of the ocean S
An unloading dock 103 having a size capable of accommodating the above is provided, and a second lock 104 capable of sealing a gap between the dry dock 101 and the unloading dock 103. The dry dock 101 and the unloading dock 103 are trenches formed of concrete in a continuous groove shape. First and second locks 1
Reference numerals 02 and 104 are sliding door types, and are provided so as to be movable in a direction orthogonal to the longitudinal directions of the dry dock 101 and the unloading dock 103. Dock bottom of dry dock 101
As shown in FIG. 2, a drainage pump 105 for discharging seawater in the dry dock 101 is arranged at 01a, and a drainage pipe 106 connected to a discharge port of the drainage pump 105 is led to the ocean S. Has been done. Further, the first lock 102 is provided with a required number of water injection holes 102a that can be opened and closed by a valve device or a partition plate (not shown) that is provided so as to be slidable in close contact with the first lock 102. .

On the bottom 101a of the dry dock 101, a first ship transfer means 107 is provided from the side of the first lock 102 to the side of the second lock 104. The first ship transfer means 107 is the bottom 1 of the earth and sand carrier 1 at low tide.
It is lower than the water depth of 3 and as shown in Fig. 3,
A large number of rollers 107a which are orthogonal to both side walls 101b and 101c of the dry dock 101 and are rotatable around a horizontal axis.
Consists of The rollers 107a are arranged in two rows at an intermediate position in the width direction of the dry dock 101 so as to correspond to the ship bottoms 13 and 13 separated by the gate door 12 of the earth and sand carrier 1 to the left and right. A part is forward / reverse rotation driven by a drive device (not shown). In addition, both side walls 101b, 10 of the dry dock 101
1c and the roller 107a in the first ship transfer means 107
A plurality of guide rollers 108, which are rotatable about an axis parallel to and parallel to the side walls 101b and 101c, are inclined so that their horizontal intervals are gradually narrowed downward. They are arranged side by side.

The unloading dock 103 is a dry dock in which seawater does not always exist, and the unloading dock 103 extends from the second lock gate 104 side to a predetermined position for accommodating the sediment carrier 1 Second ship transfer means 1
09 is provided. This second ship transfer means 109
Is on the same level as the rollers 107a in the first ship transfer means 107, and is located on both side walls 1 of the unloading dock 103.
03b, 103c, and a large number of rollers 109a that are rotatable around a horizontal axis. This roller 10
9a is a roller 1 in the first ship transfer means 107.
It is arranged in two rows so as to be aligned with 07a,
At least a part thereof is rotated in the forward and reverse directions by a drive device (not shown). Further, as shown in FIG. 4, the side walls 103b and 103c of the unloading dock 103 are rotatable about an axis parallel to and substantially vertical to the side walls 103b and 103c, and the port 14 of the earth and sand carrier 1. The guide rollers 110 that can contact 14 are arranged side by side at a predetermined interval in the transfer direction of the second ship transfer means 109 (direction orthogonal to the cross section of FIG. 4).

The unloading dock 103 has a dock bottom 10
A continuous sand and sand transfer means 111 is provided from above 3a to the ground. This earth and sand continuous transfer means 111 includes a first belt conveyor 111a horizontally arranged below the second ship transfer means 109, and the first belt conveyor 111.
The unloading dock 1 from the lower end of the transfer direction by a.
A second belt conveyor 111b extending obliquely upward in 03 to reach the ground, and the second belt conveyor 111b.
And a third belt conveyor 111c arranged from the lower end (upper end) in the transfer direction of the above with the ground facing a predetermined location. Of these, the first belt conveyor 111a is
As shown in FIG. 4, it is located directly below between the two rows of rollers 109a, 109a in the second ship transfer means 109. The rollers 109a, 10 are provided between the second ship transfer means 109 and the first belt conveyor 111a.
A chute 112, which is composed of a pair of inclined plates, is provided to moderate the falling speed of the earth and sand 3 that passes through between the 9a and to reliably guide it onto the first belt conveyor 111a.

Dock bottom 103 in the unloading dock 103
a is the first belt conveyor 111a in the continuous sediment transport means 111 below the second ship transport means 109 arranged at the same level as the rollers 107a in the first ship transport means 107 in the dry dock 101. In order to arrange, it is formed at a lower position than the bottom 101a of the dry dock 101. Further, an end of the unloading dock 103 opposite to the second lock 104 is formed in an inclined surface shape substantially corresponding to the second belt conveyor 111b in the earth and sand continuous transfer means 111.

That is, when unloading the earth and sand 3 loaded in the earth and sand tank 11 of the earth and sand carrier 1 by the unloading equipment for the earth and sand carrier having the above-mentioned structure, first, the first lock 102 is opened and dried. The sediment carrier 1 towed by the tugboat 2 is put into the dock 101. In this entry, for example, a method in which the dry dock 101 is towed while being guided to the back (on the unloading dock 103 side) by a mooring line or the like (not shown) can be adopted. In addition, the second lock 104 is closed, so that the entry of the seawater W into the unloading dock 103 is blocked. Further, even if the water level in the dry dock 101 drops due to low tide, the bottom 1 of the sediment carrier 1 to be entered
3 is the first ship transfer means 107 and the dock bottom 1 of the dry dock 101
It does not interfere with 01a.

When the sediment carrier 1 enters the dry dock 101, the first lock 102 is closed, and the water injection hole 102a provided in the first lock 102 is also closed, and in this state, the inside of the dry dock 101 is closed. Drain pump 105 and drain pipe 1 for seawater W
It drains to the ocean S via 06. As a result, the water level in the dry dock 101 gradually decreases, and along with this, the earth and sand carrier 1 gradually descends in the dry dock 101, and eventually the bottom 13 of the ship moves into the rollers 107a of the first ship transfer means 107. Supported on. In addition, during the descending process, the earth and sand carrier 1 moves along the sidewall 101b of the dry dock 101.
If it is deviated to the side or 101c side, this earth and sand carrier 1
Since the lower end of the port 14 of the ship comes into contact with the guide roller 108 in the displacement direction, the guide roller 108 inclined downward is arranged so that the sediment carrier 1 The first ship transfer means 107
Is reliably guided on the two rows of rollers 107a, 107a.

When the earth and sand carrier 1 is supported on the rollers 107a of the first ship transfer means 107 and the seawater W in the dry dock 101 is completely drained, the second lock 104 is opened and the first and second locks 104 are opened. By rotationally driving the rollers 107a, 109a of the ship transfer means 107, 109, the earth and sand carrier 1 is horizontally transferred into the unloading dock 103, as shown by the alternate long and short dash line in FIG. In this horizontal transfer process, as shown in FIG. 4, the earth and sand carrier 1 moves the guide rollers 110 provided on both side walls 103b and 103c of the unloading dock 103 into rolling contact with the port 14 and the loading dock 103, respectively. Guided toward the center in the width direction.
In this unloading dock 103, the earth and sand carrier 1
Is supported by the roller 107a of the first ship transfer means 107 and the roller 109a of the second ship transfer means 109, which is horizontally aligned, at a predetermined height from the bottom 103a of the dock which is lower than the dry dock 101.

When the earth and sand carrier 1 is completely accommodated in the unloading dock 103, the gate door 12 at the bottom of the earth and sand carrier 1 is opened to drop the earth and sand 3 from each earth and sand tank 11 in the ship. As described above, the sediment carrier 1 uses the guide roller 110 to unload the dock 1
Since it is guided in the center of 03 in the width direction, the gate door 12
Are two rows of rollers 109a of the second ship transfer means 109,
It is opened at a position between 109a. Therefore, the earth and sand 3 released from the bottom of the earth and sand carrier 1 when the gate door 12 is opened falls between the two rows of rollers 109a and 109a and the chute 112 on the lower side of the rollers 109a and 109a, and is positioned directly below the chute 112. It is received by the first belt conveyor 111a in the continuous sand-and-sand transfer means 111.

In the earth and sand continuous transfer means 111, the first belt conveyor 111a receives the earth and sand 3 dropped and discharged from the earth and sand carrier 1, and the earth and sand 3 is unloaded from the dock 1
It is horizontally transferred to the opposite side of the second lock 104 along the bottom 103a of 03, and is transferred diagonally upward from the end to the ground by the second belt conveyor 111b, and further from the end thereof. Third belt conveyor 111c
It is to be transferred to a specified place on the ground.

After all the sediment 3 in each sediment tank 11 of the sediment carrier 1 has been discharged, the roller 109a of the second ship transfer means 109 is moved in the opposite direction to the case where it is transferred to the unloading dock 103. By rotating and driving this sediment carrier 1, the first ship transfer means 1 in the dry dock 101
No. 07 roller 107a is horizontally transferred to the second lock 10
Block 4 Next, by opening the valve device of the water injection hole 102a provided in the first lock 102, seawater of the ocean S is injected into the dry dock 101. by this,
As the water surface level in the dry dock 101 rises, the earth and sand carrier 1 eventually floats away from the rollers 109a. When the water surface level of the dry dock 101 becomes the same as the water surface level of the ocean S, the water pressure difference on both sides of the first lock 102 becomes zero, so that water injection from the water injection hole 102a stops and the first lock 102 is closed. It can be opened easily. The earth and sand carrier 1 is towed by the tugboat 2 waiting in the ocean S and departed from the dry dock 101.

The present invention is not limited to the illustrated embodiment. For example, the first and second ship transfer means 1
The rollers 107a and 109a may be configured such that the rollers 107a and 109a are not rotationally driven and the earth and sand carrier 1 is towed on the rollers 107a and 109a. The first and second locks 102 and 104 are shown in the drawing. In addition to the sliding door type, for example, a door type, a double door type, a tilting type, etc. can be adopted. Also, the dry dock 101 and the unloading dock 103
Is sized to accommodate a plurality of earth and sand carriers 1, so that it is possible to unload a plurality of earth and sand carriers 1 at a time. Further, when the earth and sand carrier 1 is lowered in the dry dock 101, a mooring wire or the like is used instead of the guide roller 108 to move the earth and sand carrier 1 into the first ship transfer means 1.
You may be able to guide to 07.

[0024]

According to the present invention, a sediment carrier such as a grab bucket or a backhoe excavator is continuously transferred to transfer an earth and sand carrier that has entered a dry dock to an unloading dock and continuously transfer the discharged earth and sand. Compared with the method of unloading earth and sand from a earth and sand carrier by using, the unloading operation can be carried out in a short time and easily, and large-scale earthing equipment such as the grab bucket is unnecessary.

[Brief description of drawings]

FIG. 1 is a schematic perspective view showing a preferred embodiment of an unloading facility for a sediment carrier according to the present invention.

FIG. 2 is a schematic cross-sectional view showing the above embodiment by cutting it in the transport direction of the earth and sand carrier.

FIG. 3 is a cross-sectional view showing the above embodiment, taken along the line III-III in FIG.

FIG. 4 is a cross-sectional view showing the above embodiment, taken along the line IV-IV in FIG.

[Explanation of symbols]

 1 Sediment Carrier 11 Sediment Tank 12 Gate Door 3 Sediment 101 Dry Dock 101a, 103a Dock Bottom 102 First Lock Gate 102a Water Injection Hole (Water Injection Means) 103 Unloading Dock 104 Second Lock Gate 105 Drain Pump (Drain Means) 106 Drain Pipe (Drainage Means) 107 First Ship Transfer Means 107a, 109a Rollers 109 Second Ship Transfer Means 111 Continuous Sediment Transfer Means

Claims (4)

[Claims] 1. An open-bottom type sediment carrier with a gate door provided at the bottom of a sediment tank for loading sediment into a dry dock, and the dry dock is watertightly closed and the interior is drained. While supporting the earth and sand carrier that has descended in the dry dock by drainage at a predetermined height, move it from the dry dock to the unloading dock adjacent to it, and use this unloading dock to the gate of the bottom of the earth and sand carrier. A method for unloading from a sediment carrier, which comprises opening a door to drop and release the sediment from the sediment tank, and continuously transferring the falling sediment to a predetermined place on the ground. 2. A dry dock in which a bottom-opening type sand carrier with a gate door is provided at the bottom of a sand tank in which sediment is loaded, and a first dock that can seal the ocean side entrance of this dry dock. A lock, an unloading dock connected to the dry dock and capable of accommodating the sand carrier, a second lock that can seal between the dry dock and the unloading dock, and discharges seawater in the dry dock Drainage means and water injection means for injecting water into the dry dock, first ship transfer means arranged on the bottom of the dry dock and horizontally transferring the earth and sand carrier between the unloading dock, and Second ship transfer means arranged in the unloading dock at the same level as the first ship transfer means to horizontally transfer the earth and sand carrier to and from the dry dock, and from the bottom of the unloading dock to the ground Sediment continuous arranged toward Feeding means and load for sand carrier down facility, characterized in that it comprises a. 3. The plurality of first and second ship transfer means arranged in two rows at predetermined intervals in the transfer direction to support the bottoms of both sides of the gate door of the earth and sand carrier. An unloading facility for earth and sand carriers, which consists of rollers. 4. The first and second belt conveyors according to claim 2, wherein the continuous sand and sand transfer means are arranged substantially horizontally below the second ship transfer means, and below the end of the first belt conveyor. An unloading facility for a sediment carrier, which comprises a plurality of belt conveyors including a second belt conveyor that extends diagonally in the unloading dock to reach the ground.