JPH0639285Y2 - Hoisting ship - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to a terrain measuring device for mechanically measuring the terrain of a relatively shallow seabed.

[Prior art] When constructing an airfield, etc. by reclaiming the sea, the area such as the airfield is divided by sheet piles, and the earth and sand are carried into the sea in the area by an earth carrier, and the sediment is deposited on the seabed. The above area is made a land by scraping it with a hoisting ship such as

In this case, in order to efficiently perform the scraping work by the hoisting ship, it is necessary to accurately grasp the sedimentation state of the seabed, that is, the topography of the seabed.

[Problems to be solved by the invention] However, it is difficult to grasp the topography of the seabed because the sea is clouded by the hoisting work by a hoisting ship. Therefore, there is a problem that the work must be performed depending on the feeling of the worker.

Therefore, an object of the present invention is to solve the above problems and to provide a new landing ship capable of accurately measuring the topography of the seabed after dredging and improving the efficiency of dredging work.

[Means for Solving the Problem] In order to achieve the above-mentioned object, the present invention uses a bucket wheel provided on the bow to rotate the hull in an arc shape while using a spud provided at the stern as a fulcrum of rotation to move the seabed. In a hoisting ship dredging earth and sand, it is supported by the hull so that it can move up and down,
A rod with a scale formed to measure the water depth after dredging, a wheel that is rotatably provided at the lower end of the rod and rolls along the seabed after dredging, and the rotational speed of the wheel is detected and displayed. It is equipped with a terrain measuring device consisting of a speed type.

[Operation] As described above, according to the present invention, as the wheels roll along the seabed after dredging as the hull rotates, the rod moves up and down according to the unevenness of the seabed after dredging. The water depth after dredging can be measured by measuring the scale formed on the rod on board. Also, because the speedometer provided on the wheel is designed to detect the rotation speed of the wheel,
It is possible to measure the shape of the seabed as well as the water depth after dredging. Therefore, even if the seawater becomes muddy when the seabed is dredged by the bucket wheel, the topography of the seabed after dredging, that is, the dredging state can be accurately grasped.

[Embodiment] An embodiment of the present invention will be described below in detail with reference to the accompanying drawings.

In FIG. 1 and FIG. 2, reference numeral 1 denotes a hoisting ship which is a hull, and this hoisting ship 1 is called a so-called reclaimer ship. At the tip of a boom 2 which can be lifted up and down and extends forward from the bow side. A bucket wheel 4 for scraping off the soil on the seabed 3 is provided, and the scraped off soil is conveyed to the top of the ship by a conveyor (not shown) provided along the boom 2. A spreader 6 having a long conveyor 5 that carries the scraped sand to a location away from the hoisting ship 1 is installed on the hoisting ship 1.
A relay conveyor 7 and the like are installed between the carry-in end and the carry-out end of the conveyor in the boom 2.

A spud 8 which is inserted into the seabed 3 and serves as a pivotal fulcrum of the hoisting ship 1 is provided at the stern of the hoisting ship 1, and a mooring line 10 having an anchor 9 at its tip is taken up and unreeled on both sides of the bow side. As a result, a winch 11 for rotating the hoisting ship 1 in an arc shape with the spud 8 as a fulcrum is installed. The hoisting ship 1 constructed in this manner is capable of reciprocally rotating in an arc shape as shown by an arrow in FIG. ing.

A landform measuring device 12 for the seabed 3 is attached to the bow of the hoisting ship 1. As shown in FIG. 3, this device 12 has a rod 14 supported on the bow of the hoisting ship 1 via a guide 13 so as to be vertically movable along the vertical direction.
Wheels 15 rolling on the seabed 3 are rotatably mounted on bearings 16 at the lower end of a rod 14 extending further into the water. The wheel 16 is provided with a protrusion 17 for preventing slip.

Further, a weight 18 for adjusting the ground contact pressure of the wheel 15 to the seabed 3 is attached to the upper end of the rod 14 extending above the guide 13. Therefore, when the hoisting ship 1 moves, the wheels 15 roll on the seabed 3 accordingly, and the rods 14 move up and down according to the unevenness of the seabed 3.

The side surface of the rod 14 has a scale 19 along its longitudinal direction.
Is formed, and the water depth can be measured from the scale 19.

A speed sensor 20 for detecting the rotation speed of the wheel 15 is attached to the bearing 16, and the speed sensor 20 is mounted on the hoisting ship 1.
A speedometer 21 that displays the speed detected by 20 is installed.

Next, the operation of the embodiment will be described.

When constructing an airfield or the like by landfilling the sea, an area to be an airfield or the like is divided by the sheet piles 30, and earth and sand are carried into the sea in the area by a sand carrier and put therein. If the bottom of the seabed 3 becomes shallow to some extent by this, and if more sediment accumulates, the bottom of the earth transporter will not be able to support and move, so this time the soil sediment will be scraped up by the hoisting ship 1 and spreader. By gradually stacking by 5, the above area becomes land 31.

In this case, in order to efficiently carry out the scraping work by the hoisting ship 1, it is necessary to accurately grasp the sedimentation state of the seabed 3, that is, the topography of the seabed. It is difficult to figure out.

Therefore, the terrain measuring device 12 provided in the unloading ship 1 is used, whereby the topography of the seabed can be accurately grasped even if the sea is cloudy.

That is, when the hoisting ship 1 moves on the sea surface, the wheels 15 attached to the lower ends of the rods 14 of the terrain measuring device 12 are accompanied with this.
Rolls along the seabed 3 and rods depending on the unevenness of the seabed 3.
14 will move up and down. Since the scale 19 is formed on the rod 14, the current depth of the water can be measured by the scale 19, and if the seabed is uneven, the scraping height of the bucket wheel 4 can be adjusted accordingly. Adjust it.

Further, since the rotational speed of the wheel 15 is displayed on the speedometer 21, the absolute moving speed of the hoisting ship 1 can be known from this, and this is combined with the adjustment of the scraping height of the bucket wheel 4. The scraping ability can be maximized and work can be performed efficiently.

Especially, since the landform measuring device 12 is attached to the unloading ship 1,
By measuring the topography of the seabed and adjusting the scraping height of the bucket wheel 4 and the moving speed of the hoisting ship 1 by the winch 11 accordingly, the work can be efficiently advanced.

Although the landform measuring device 1 is attached to the landing ship 1 in the embodiment, the landform measuring device 12 may be attached to a floating body other than the landing ship 1 to measure the landform of the seabed.

Further, the hoisting ship 1 is not limited to a reclaimer ship, and may be of another type.

[Effects of the Invention] In summary, according to the present invention, the topography of the seabed after dredging, that is, the dredging work state can be accurately measured even if the seawater is turbid when the seabed is dredged. Compared with the conventional dredging work that relies on the feeling of the worker, a drastically efficient dredging work can be achieved.

[Brief description of drawings]

FIG. 1 is a plan view showing an embodiment of the present invention, and FIG.
FIG. 3 is an enlarged side view of the figure, and FIG. 3 is an enlarged perspective view of a main part of FIG. In the figure, 1 is a hoisting ship which is a hull, 3 is the seabed, 12 is a topography measuring device, 14 is a rod, 15 is a wheel, 19 is a scale, and 21 is a speedometer.

Claims (1)

[Scope of utility model registration request] 1. A hoisting ship for dredging sediment on the seabed with a bucket wheel provided on the bow while rotating the hull in an arc shape with a spud provided at the stern as a fulcrum, A rod that is movably supported and has a scale formed to measure the water depth after dredging, a wheel that is rotatably provided at the lower end of the rod and that rolls along the seabed after dredging, and the rotation of the wheel. A unloading ship, which is equipped with a terrain measuring device including a speedometer for detecting and displaying speed.