JPH0647963Y2 - Drain material placing device - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention is a drain material placing device for placing soil in soft ground to improve soil quality, and particularly for improving soft ground at the bottom of water. The present invention relates to a drain material placing device.

[Prior art]

There is known a method of draining the ground by placing a drain material in the ground to improve the soft ground at the bottom of the water. The mandrel is attached to the work boat so that the mandrel can be moved up and down, and the mandrel is left in the submarine ground.

[Problems to be solved by this device]

The problem with such a drain material placing device is that the mandrel must be pulled up to the sea after each placement in order to cut the drain material. Therefore, the work is troublesome and the construction becomes long.

In addition, when the mandrel is pulled up, the drain material may also go up and the ground improvement may not be performed as planned. Conventionally, an anchor has been used to prevent such an uplink.

It is an object of the present invention to provide a drain material placing device which has good workability and does not need to be pulled up to the sea every time the mandrel is placed, and which enables accurate ground improvement.

[Means for solving problems]

The drain material placing device according to the present invention has the following configuration.

A mandrel with a narrow rectangular cross section, which is installed inside the drain material drawn from the roll and placed in the ground, is attached to a girder that is installed on a work boat and can be moved up and down from the ship, and the drain material inside the mandrel is also installed. The rotation of the rollers abutting on the front and back surfaces of the mandrel makes it possible to feed the drain material from the mandrel, and one side of the lower end of the mandrel is provided with an inclined piece slidably contacting the delivery drain material having the same width as the mandrel, and the other Provided on the side is a clamp fitting having an inclined surface having a width equal to that of a mandrel capable of sandwiching or opening a drain member facing the inclined piece, and at the lower end of the girder,
A cutting device having a blade that can be moved back and forth in a direction orthogonal to the mandrel driving direction by a cylinder is arranged.

〔Example〕

Hereinafter, the present invention will be described in detail based on an embodiment shown in the drawings.

In the figure, reference numeral 1 denotes a work boat, on which a gate-shaped traveling turret 2 is installed. Traveling devices 3, 3 are attached to the lower end of the traveling turret 2 so that they can travel on the work boat 1.

A girder 4 framed in a rectangular shape is installed on the traveling turret 2. The girder 4 is configured such that a rope 6 is hung on pulleys 5 and 5 attached to the upper end of the girder 4, and a motor 7 capable of winding the rope 6 allows the girder 4 to move up and down. The girder 4 can be moved up and down from the ship to the water by moving up and down.

A plurality of mandrel suspension devices 8 are provided on the upper part of the girder 4.
Are arranged in parallel, and a mandrel 9 is suspended from the suspension device 8. The mandrel 9 can be moved up and down by the suspension device 8.

As shown in FIG. 8, the madrondrel 9 has a tubular shape, and its cross section has a narrow rectangular shape. On the upper part of the girder 4, a roll 10 of drain material is arranged corresponding to each mandrel 9. Drain material drawn from this roll 10
11 can be placed inside each mandrel 9 for interior decoration. In the embodiment, a wide drain material 11 having a width of about 1,000 mm is used. As the drain material 11, a paper drain material, a plastic drain material, or the like can be used.

Inside the mandrel 9, rollers 12 and 12 are provided which come into contact with the front and back surfaces of the drain material 11. Mandrel 9 in the example
Bearings 13a, 13a are fixedly installed correspondingly on the left and right inside of the roller shafts 13, 14, and roller shafts 14, 14 located on the front and back sides of the drain material 11 are horizontally extended. A plurality of rollers 13 and 13 are fixed to the roller shafts 14 and 14 at appropriate intervals, and one of the right and left sides of the roller shafts 14 and 14 projects outward from the bearing 13. The sprocket wheel 15 is attached to this protruding portion. The roller chain 16 is hung on the upper and lower sprocket wheels 15 and 15, and the rotation of the motor installed above is transmitted to the sprocket wheel 15 via the roller chain 16.
The roller shaft 14 rotates so that the roller 12 can send out the drain material 11. The roller shaft 14 located on either the front or back side of the drain member 11 is movable in the horizontal direction as shown in FIG. 5, and is biased by the spring 17 toward the other roller shaft 14.

On one side of the lower end of the mandrel 9, an inclined piece having a width equal to the width of the mandrel slidably contacting the discharged drain material 11 is extended, and on the other side, the drain material 11 is sandwiched so as to face the inclined piece. Alternatively, a clamp metal fitting 18 having a width equal to the width of a mandrel having an openable inclined surface is provided, and the clamp metal fitting 18 can be opened and closed by a cylinder 18a. In this way, the clamp member 18 can hold the drain member 11 over the entire width of the mandrel 9 in the width direction.

At the lower end of the girder 4, there is a hole 19 through which each mandrel 9 can be lowered.
Is opened. Above the hole 19, the guide roller 20 guides the mandrel 9 to move up and down so as to surround the hole 19.

Further, before and after the hole 19, a blade pedestal 22 and a cutting backup 23 which are moved forward and backward by the cylinders 21 and 21 toward the hole 19 are installed. The blade pedestal 22 is further provided with a blade 25 that moves forward and backward in the direction of the hole 19 by a cylinder 24. The blade pedestal 22, the cutting backup 23, the blade 25, and the like constitute a cutting device.

Next, the operation of placing the drain material 11 using the drain material placing device as described above will be described.

The girder 4 is lowered into the water by the motor 7 at an appropriate position by the work boat 1. (FIG. 10) In the mandrel 9, a drain material 11 is pulled out from a roll 10 and accommodated inside.

The suspending device 8 is driven to lower the mandrel 9, and the mandrel 9 is driven into the soil on the water bottom. (Fig. 11) Next, the mandrel 9 is raised and pulled out from the soil. (No.
(Fig. 12) At this time, the clamp metal fitting 18 at the lower end of the mandrel is opened to release the clamp of the drain material 11, and the rollers 12 and 12 in the mandrel 9 are rotated to lift the drain material 11 at the same speed as the mandrel 9 is pulled up. Send out. This prevents the drain material 11 from rising together when the mandrel 9 is pulled up.

After the mandrel 9 has been pulled up, the clamp fitting 18
Is closed and the cylinders 21, 21 are driven to draw the blade pedestal 22 and the cutting backup 23 toward each other. Next, the cylinder 24 is driven to advance the blade 25 to cut the drain material 11. While traveling on the traveling turret 2, both the girder 4 and the mandrel 9 are advanced to the next setting position. (Fig. 13) After that, the above work may be repeated. (FIG. 14) [Advantages of Device] Since the device of the present invention has the above-mentioned configuration, the following effects can be obtained.

(A) Since the mandrel is provided with the roller capable of sending out the drain, the roller can be turned and sent out when the mandrel is pulled up, and the drain material can be prevented from rising together.

(B) Since the lower end of the girder is provided with a blade that can be moved back and forth by a cylinder, the drain material can be cut before the mandrel is pulled up above the water. Therefore, work efficiency can be improved.

(C) Construction is performed by extending an inclined piece at the lower end of the mandrel, providing a clamp metal fitting with an inclined surface, and tapering the lower end of the mandrel so that the drain material can be easily driven like a wedge is driven into the soil in the water. Can be facilitated.

[Brief description of drawings]

FIG. 1 is a side view of a drain material placing device according to the present invention, FIG. 2 is a sectional view taken along the line II-II of FIG. 1, FIG. 3 is a longitudinal sectional view of a mandrel, and FIG. 4 is a sectional view of FIG. IV-IV line sectional view, FIG. 5 is a partial sectional view of the mandrel, FIG. 6 to FIG. 8 are lower schematic views of the girder, and FIG. 9 to FIG. is there. 1 …… Workboat, 2 …… Truck, 4 …… Girder, 8 ……
Suspension device, 9 …… Mandrel, 10 …… Roll, 11 …… Drain material, 12 …… Roller, 18 …… Clamp metal fitting, 19 …… Hole, 20 …… Guide roller, 21 …… Cylinder, 22 …… Blade pedestal, 23 …… cutting backup, 25 …… blade.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Shigeru Kikuchi 1-2-7 Moto-Akasaka, Minato-ku, Tokyo Kashima Construction Co., Ltd. (56) Reference JP 62-107106 (JP, A) Sho-60-100436 (JP, U)

Claims (1)

[Scope of utility model registration request] 1. A mandrel having a narrow rectangular cross-section which is internally mounted with a drain material to be pulled out from a roll and is placed in the ground, is mounted on a girder which is installed on a work boat and can be vertically moved into water from the top of the ship. By rotating the rollers that contact the front and back surfaces of the drain material in the mandrel, the drain material can be sent out from the mandrel, and an inclined piece that slidably contacts the delivery drain material having the same width as the mandrel is extended to one side of the lower end of the mandrel. On the other side, a clamp metal fitting having a sloped surface having the same width as the mandrel capable of sandwiching or opening the drain material facing the sloped piece is provided on the other side, and the lower end of the girder is mounted by a cylinder in the mandrel driving direction. And a cutting device having a blade capable of advancing and retracting in a direction orthogonal to the drain material placing device.