JPS5815564B2 - Hardening treatment equipment for soft soil under water - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention is aimed at easily and stably constructing a hardened ground necessary for civil engineering by using the clay soil in a soft soil layer, for example, a clay soil layer such as a sludge layer. The aim is to provide a device for this purpose.

Utility Model No. 49-1997 describes a treatment ship that uses a sludge hardening agent to harden sludge that has already accumulated on the bottom of the water on the spot.
13259, the turret of the sludge agitator for injecting the sludge hardening agent is installed exclusively at the end of the ship's hull, as seen in this example, and the turret of the sludge agitator for injecting the sludge hardening agent is installed exclusively at the end of the ship's hull during the hardening process. Pitching and rolling are unavoidable, and the sludge agitator tilts, resulting in
There are problems such as uncured parts remaining during the curing process.
The disadvantage is that it is not possible to form a uniform and stable hardened ground.

The present invention aims to eliminate such drawbacks, and one embodiment of the present invention will be described below with reference to the accompanying drawings.

Figure 1 is a front view of the plant ship, Figure 2 is a plan view, Figure 3 is a side view, Figures 4 and 5 are enlarged detailed views of the truck and stirring blades, and Figure 6 is a detailed view of the plant ship. An explanatory diagram showing a state in which a cui is constructed by a ship, and FIGS. 7 and 8 are partially detailed views showing other examples of stirring blades.

In the drawings, 1 and 1' are floats, which in this embodiment represent a catamaran.

2a, 2b, 2c, and 2d are stays formed by mounting between the floats, and a space is formed inside between the center stays 2b and 2c, and the eye and the space are surrounded. Four guide columns 3a, 3b, 3c in the upward vertical direction
.

3d, and the guide column slides and guides a truck that supports and raises and lowers stirring blade means, which will be described later.

Reference numeral 4 denotes a cart, which supports the stirring shaft 5 inside, and has the guide columns 3a, 3b, 3 on both left and right upper and lower sides 6 and 6'.
Guide rollers 7a and 7b for guiding between c and 3a
, 7c, 7d, 7'a, 7'b.

7'c and 7'd are attached.

Reference numeral 8 denotes a motor for rotating the stirring shaft 5, and the rotation rotates a sprocket wheel 11 attached to the rotating shaft via a sprocket wheel 9 and a chain belt 10.

Reference numeral 12 denotes another motor attached to the front of the truck 4, and this motor moves the truck 4 up and down.

That is, reference numeral 13 denotes a drive shaft supported by bearings 14 and 14' on the front of the truck 4 and having gears 15 and 15' attached to both ends, and is driven via the motor 12, sprocket wheels 16, 17, and chain belt 18. be done.

Racks 19 and 19' are attached to the front surfaces of the guides 3a and 3c, and the gears 15 and 15' mesh with the racks to move the entire truck 4 up and down when the drive shaft 13 rotates. .

A stirring blade 20 is detachably attached to the tip of the stirring shaft 5, and the inside thereof is hollow together with the stirring shaft, and holes or slits 21 are provided in appropriate places for the curing agent to be ejected. is drilled.

Reference numeral 22 denotes a hose for supplying the curing agent, and 23a and 23b denote guide rollers thereof.The hose tip is attached to the upper end of the stirring shaft with the end of the hose protruding above the trolley 4, and the hose 22 is connected between both rollers. When the stirring shaft 5 is lowered together with the base plate 4, the slack l is let out.

Note that 24a, 24b, 24c, and 24d are winches provided at the four corners.

and ropes 30a and 30b. Guide rollers 31a and 31, respectively, 30c and 30d are provided on the outer edge of the deck.
b, 31c, and 31d, and is wound onto the drum of each winch or let out from the drum.

Such a plant ship is operated and moved as follows.

That is, while winding the ropes 30a and 30c around the drums of the winches 24a and 24c, the ropes 30b and 30d are simultaneously wound.
winch 24b.

If they are fed out from the drums 24d, the plant ship will move in the direction of the arrow.

(See Figure 2) At this time, if each rope and each winch are operated in the opposite direction to the above, the plant ship will move in the opposite direction of the arrow.

Other winch operations, such as winding rope 30c a little earlier than rope 30a, while simultaneously winding rope 30c.
It is also possible to move the plant ship diagonally by letting out 0d a little later than the rope 30b.

In either case, the speed of the rope being wound onto the drum and the speed of the rope being unwound from the drum are adjusted to approximately the same speed, and the rope tension on the side being wound and the speed of the rope being unwound are adjusted to the same speed. The rope tension on both sides is adjusted to the same tension while operating.

Furthermore, operations such as this, in which the winches at the four corners are used and the rope tensions interact with each other, are extremely effective in moving the plant ship while maintaining a stable equilibrium state.

The apparatus of the present invention is constructed as described above, and the curing agent is mixed at a constant ratio and fed into the stirring shaft 5 using the hose 22 with a slurry pump.

Therefore, the motors 8 and 12 are located in the target soft soil layer.
While rotating the agitation shaft 5 by driving the guide columns 3a, 3b, 3c, the cart 4 is rotated.

3d, and at the same time the stirring blade 20
A hardening agent such as Beton cement is released into the stirred soil layer from the holes or slits 21, and the hardening treatment in the soft soil layer is performed by stirring and mixing.

In the device of the present invention, a space is formed in the center of the floating body, and guide columns 3a, 3b surround the space.

Guide rollers 7a, 7b, 7 are attached to each guide column by a dolly that rotatably supports a stirring shaft.
c, 7a, 7'a, 7'b, 7'c.

7'd, the overall balance of the device is maintained, and the stirring shaft is stable both in the axial direction and around the axis, and the cart can slide reliably without wobbling. becomes.

Therefore, the stirring blade can be correctly guided in a specified vertical direction.

On the other hand, pitching and rolling of the floating body greatly affect the penetration reaction force and pull-out reaction force of the stirring blades, and cause disadvantages such as uncured parts remaining during the hardening process. Since the heavy objects are concentrated in the floating body, it is stable and prevents pitching and rolling.On the other hand, there are winches 24a at the four corners of the floating body.
, 24b.

24c and 24d are provided, and by manipulating the ropes of each winch respectively, it is possible to perform the hardening process while forcibly maintaining a stable equilibrium state. By feeding out the material, the plant vessel can be quickly and accurately guided or moved to the desired hardening treatment location.

By arranging such a winch, it is possible to minimize and eliminate the effects of wind, tides, and waves.

This is especially effective in accurately positioning the agitating blades that firmly connect the adjacent joints of the parts to be hardened, and is extremely effective in eliminating the above-mentioned defects. be.

In the apparatus of the present invention, as shown in FIGS. 7 and 8, a shielding cylinder is provided surrounding the stirring blade, and the shielding cylinder is rotated separately or integrally with the stirring blade. In this case, the excavated soil excavated by the shielding cylinder is pressed against the inner peripheral surface of the hole and kneaded, and the hardening agent is sealed within the shielding cylinder area, so that it will not flow out of the area.

It should be noted that forming sharp blades on the insertion side and the rotation direction side of the shielding cylinder is extremely effective in facilitating cutting of the soft soil layer.

Note that the guide columns in the device of the present invention are used to correctly guide the movement of the stirring blade in the desired direction of movement, and the number thereof can be determined arbitrarily.

[Brief explanation of the drawing]

The attached drawings show an example of the implementation of the apparatus of the present invention, in which Fig. 1 is a front view of a plant ship, Fig. 2 is a plan view, Fig. 3 is a side view, and Figs. 4 and 5 show a truck and stirring blades. FIG. 6 is an explanatory diagram showing a situation in which a cuy is constructed by the plant ship, and FIGS. 7 and 8 are partial detailed diagrams showing other examples of stirring blades. 1.1'...-Float, 2a, 2b, 2c,
2a...Stay, 3a, 3b, 3c, 3d...
...Guide, 4...Dolly, 5...
Stirring shaft, 13... Drive shaft, 20... Stirring blade, 21... Slit, 22...
Hose, 26... Control room.

Claims (1)

[Claims] 1 A space is formed in the center of the floating body, and a guide column is vertically provided above the edge of the space, and a stirring shaft equipped with stirring blades is rotatably supported using the guide column as a guide. In addition to disposing a trolley made of plastic so that it can move freely in the vertical direction of the space, a supply means for supplying the curing agent is provided near the stirring blade, and winches are provided at the four corners of the floating body. This is a hardening treatment equipment for soft soil under water.