JPH05195534A - Rubble leveler - Google Patents

Abstract

PURPOSE:To raise the efficiency or construction by a method in which a walking means and a vertically and horizontally movable frame are provided to a fixed frame horizontally set on the bottom under water and the weight of the movable frame is dropped on rubble. CONSTITUTION:An oil-pressure type expandible leg 2 is set on the four corners of a fixed frame 1 consisting of box beams serving also as buoyancy tanks. A vertically and horizontally movable frame 4 is attached by an oil-pressure cylinder to the upside of the frame 1, and expandible legs 5 are attached to the four corners of the frame 4. A movable base 6 with an echo sounder and a weight 3 for free dropping and pressing are provided to the downside of the frame 4. The device is horizontally set on rubble on the bottom under water and the base 6 is moved to measure the level of the rubble face by the echo sounder. The frame 4 is further moved and the weight 3 is set on a given position. The rubble face is leveled by dropping or pressing the weight 3 and the frame 4 is freely moved on the bottom under water while expanding or contracting the legs 5 and 2. The construction can thus be performed with high accuracy and high efficiency for leveling work without affected by tidal current.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rubble leveling device used for leveling a rubble mound laid on the bottom of a sea where a caisson for a breakwater is sunk.

[0002]

2. Description of the Related Art Conventionally, in the leveling work of the above-mentioned rubble stone mound, a weight is suspended from a work boat on the surface of the water, and the weight is freely dropped onto the rubble mound to smooth the rubble stone. However, in the sea area where the sea conditions are bad, the work vessel is shaken by the waves, and the leveling work cannot be performed with high accuracy, and the number of operating days is reduced, resulting in poor work efficiency.

[0003]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems of the prior art, and even in a place where the sea conditions are poor, the rubble mound leveling work can be performed accurately and efficiently. The problem to be solved is to provide a rubble leveling device that can be performed.

[0004]

As means for solving the above-mentioned problems, the rubble leveling device of the present invention has a bottom walking means and a vertical length of a fixed frame which can be erected horizontally on the bottom of the water. By providing a movable frame that can move in each of the horizontal and horizontal directions, arranging a pedestal equipped with a sounding instrument on the lower surface of the movable frame, and arranging a weight that can be freely dropped or pressed downward from the movable frame. Composed.

[0005]

[Operation] The fixed frame of the rubble leveling device with the above configuration is erected horizontally on the rubble surface, and the stand with the sounding instrument under the moving frame is moved to measure the leveling level. After that, move the moving frame and let the weight fall freely on the rubble surface at a predetermined position,
After finishing the rubble surface to the planned height by pressing the weight on the rubble surface, move a predetermined distance with the water bottom walking means of this device, and set the fixed frame horizontally again on the rubble surface. By repeating the above procedure, the work of leveling the rubble surface to the planned height can be efficiently performed.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a plan view of a rubble leveling device according to an embodiment of the present invention, FIG. 2 is a side view of FIG. 1, and FIG. FIG. 3 is a side view of the free fall of the weight in FIG. 2 and an enlarged main part of the pressing mechanism. First, the construction of the rubble leveling device of this embodiment will be described with reference to these drawings.

That is, in this device, hydraulic telescopic legs 2 are provided at four corners of a fixed frame 1 which is also a box girder that also serves as a buoyancy tank, and the fixed frame 1 is vertically mounted on the upper surface of the fixed frame 1 by hydraulic cylinders. That is, a movable frame 4 on which the weight 3 is mounted is provided so as to be movable in the long side direction A of this embodiment, and hydraulic telescopic legs 5 are also provided at the four corners of the movable frame 4. Also,
The movable frame 4 can be moved by a hydraulic cylinder in the lateral direction of the fixed frame 1, that is, in the short side direction B of this embodiment.

Next, on the lower surface of the moving frame 4, a pedestal 6 equipped with a plurality of sounding instruments such as acoustic sounding instruments is arranged. Further, if a plurality of rakes 7 are attached to the gantry 6 arranged on the moving frame 4, the height of the rubble surface can be measured and at the same time, extremely protruding stones can be removed by the rake 7. This weight 3 is shown in a locked state by the sleeve 8A in FIG. 5 to the rod 11 and an unlocked state by the pressure oil P in FIG.
For example, a lock device 8 such as a product name bear lock is arranged at the lower end of the hydraulic cylinder 9 below the moving frame 4 as shown in FIG. 3, and the rod 11 inserted into the lock device 8 is
Together with the weight 3 connected to the lower end of 11 by the tip screwing member 11A, it can be freely dropped or pressed downward from the moving frame 4.

As described above, in this embodiment, the fixed frame 1
And hydraulic frame telescopic legs 2 and 5 are provided at the four corners of the movable frame 4, respectively. The telescopic legs 2 and 5 are expanded and contracted, and the movable frame 4 is set in the vertical direction A and the horizontal direction with respect to the fixed frame 1. It can be moved in the direction B and is used as the water bottom walking means of this device.
Such a water bottom walking means is not limited to the above-mentioned embodiment, and any means such as a crawler type may be used.

Each drive part of the rubble leveling device having the above-mentioned structure is hydraulically driven. The hydraulic unit is mounted on the main body of the device, and the power source is mounted on the support ship, and the rubble is connected by a cable. It is connected to the leveling device. Further, in this embodiment, as shown in FIG. 3, the weight 3 is arranged on the rubble surface below the moving frame 4 so as to be free to fall or to be pressed, but as in the other embodiment shown in FIG. Moving frame 4
On the other hand, a hydraulic cylinder 9 in which a lock device 8 such as a bear lock is fixedly installed on the top and bottom through a universal type holding mechanism
The weight 3 may be attached to the lower end of the rod 11 penetrating through the via a universal hinge mechanism 12 so that the weight 3 can freely fall or be pressed.

Next, the working procedure by the rubble leveling device of one embodiment of the present invention having the above structure will be described.
After arranging this device on the rubble surface thrown into the bottom of the water and adjusting the telescopic legs 2 of the fixed frame 1 to horizontally stand the fixed frame 1, a plurality of sounding instruments provided on the lower surface of the moving frame 4 The pedestal 6 provided with is moved to measure the height of the leveling surface of the rubble. At this time, by placing the rake 7 on the pedestal 6 as in this embodiment, it is possible to eliminate the stones having a protruding rubble surface.

Next, the movable frame 4 is moved to dispose the weight 3 at a predetermined position, the hydraulic cylinder 9 is contracted while the rod 11 is held by the lock device 8, and then the lock of the lock device 8 is loosened and the weight is reduced. The weight 3 is allowed to fall freely and the rubble is leveled. At this time, the drop height and the number of drops of the weight 3 are determined according to the extent to which the rubble surface is projected above the planned height.

In this embodiment, when the fixed frame 1 is once fixed, the weight 3 is divided into eight sections and dropped as shown in FIG. 7. Therefore, the movable frame 4 is moved to sequentially remove the rubble surface S. Average out. Therefore, the height of the leveling surface is measured again by moving the gantry 6 provided on the lower surface of the moving frame 4 and provided with a plurality of sounding instruments. At this time, if the rake 7 is arranged on the pedestal 6 as in this embodiment, the stones with the protruding rubble surface can be eliminated.

If there is a place where the height of the leveling surface is considerably higher than the planned height, the weight 3 is moved to that position and the weight 3 is allowed to fall again. Further, when the rubble surface S is slightly higher than the planned height, the weight 3 is not allowed to fall freely, and the weight 3 is pressed against the rubble surface by the hydraulic pressure P of the lock device 8 to finish at the planned height.

Next, the pedestal 6 provided on the lower surface of the moving frame 4 and provided with a plurality of sounding devices is moved to measure the height of the leveling surface for confirmation. Thereafter, the telescopic legs 5 of the movable frame 4 are extended to be grounded to support the device, and the telescopic legs 2 of the fixed frame 1 are contracted to float to move the movable frame 4 for a predetermined distance, and the telescopic legs of the fixed frame 1 are then moved. 2 is extended to be grounded and the telescopic leg 5 of the movable frame 4 is contracted to float, and the device is sequentially moved to the leveling position indicated by the arrow on the rubble surface S in FIG.

By repeating the above procedure in sequence, the rubble mound of a predetermined area is leveled.

[0017]

Since the rubble leveling device of the present invention described above is a submerged type having a water bottom walking means, work can be performed without being affected by waves, and as a result, the precision of rubble leveling is improved. At the same time, the workable time is increased, so that the working efficiency is improved. Also, by adopting a locking device etc., the weight can be dropped freely on the rubble surface below,
Alternatively, since the weight can be pressed against the rubble surface, these two functions can be selectively used depending on how much the leveling surface is higher than the planned height, and there is an effect that a highly accurate rubble leveling operation can be performed.

[Brief description of drawings]

FIG. 1 is a plan view of a rubble leveling device according to an embodiment of the present invention.

FIG. 2 is a side view of FIG.

FIG. 3 is a side view of the free fall of the weight in FIG. 2 and an enlarged main part of a pressing mechanism.

FIG. 4 is a side sectional view showing an enlarged main part of another embodiment of a free-falling and pressing mechanism of a weight of the device of the present invention.

5 is an operating principle diagram showing a locked state of a bear lock applied as a lock device in FIG. 3 or FIG. 4;

FIG. 6 is a diagram illustrating the operating principle of the unlocked state of FIG.

FIG. 7 is a plan view showing a leveling area for one shift of the rubble leveling apparatus of FIG. 1 and a moving direction of the rubble leveling apparatus.

[Explanation of symbols]

 1 Fixed frame 2 Telescopic legs 3 Weights 4 Moving frame 5 Telescopic legs 6 Stand 8 Lock device 9 Hydraulic cylinder 11 Rod A Vertical direction B Horizontal direction

Claims (1)

[Claims] 1. A movable frame having a water bottom walking means and movable vertically and horizontally of a fixed frame which can be erected horizontally on the water bottom is provided, and a sounding device is provided on the lower surface of the movable frame. A rubble leveling device in which a gantry is placed and a weight that can be freely dropped or pressed is placed below the moving frame.