JP2002070013A - Underwater riprap leveler and underwater riprap leveling method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To level even a slope by rolling and compaction effectively in a short time by large compaction force by applying proper normal force even to the slope by a device having comparatively simple constitution in the case of the underwater riprap leveling of a rubble mound. SOLUTION: A traveling type execution machine 11 such as a hydraulic backhoe, in which a bucket and an arm are removed, is installed onto a self- elevating platform type pontoon 2, the expansion arm 12 such as a telescopic type hydraulic cylinder is mounted at the front end of a boom 14 for the execution machine 11 in an inclinable manner, and a vibrating compacting machine 13 such as a hydraulic damper is secured at the front end of the expansion arm 12, thus constituting the underwater riprap leveler 1. The vibrating compacting machine 13 is inclined and fixed so as to reach the designed grade of the slope (a) and horizontality by a hydraulic cylinder 17, and the slope is rolled and compacted in the vertical direction by the vibrating compacting machine 13 at the front end, applying vertical load forcibly to riprap in water by the expansion arm 12.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an underwater rubble averaging device and an underwater rubble averaging method used when mechanically leveling rubble of mounds such as caissons and blocks in seawalls and breakwaters of port facilities. It is about.

[0002]

2. Description of the Related Art In harbor works such as seawalls and breakwaters,
Put rubble at the place where caisson or block is installed,
When constructing a foundation mound, a method of mechanically leveling the rubbled surface of the foundation mound by underwater construction is adopted instead of a method using human power, in view of enlargement of port construction and rapid construction.

[0003] When such a mechanical leveling method is roughly classified by mechanism, a horizontal force is applied to the rubble to move the rubble in the horizontal direction (rolling and rolling).
Sliding) to level the rubble, applying vertical force to the rubble, vertically compressing and compacting it, and moving the rubble in the horizontal direction, but the leveling force is generated by the rotational force of the device. There is a method of obtaining a leveling surface while supplying rubble at the same time.

[0004]

However, the conventional mechanical leveling method as described above mainly involves leveling the horizontal plane of the mound, and is difficult to apply to an inclined surface. Leveling by human power is common.

Therefore, the slope of the mound is also
Although a method of mechanically equalizing by underwater construction is desired, it is difficult to apply an appropriate vertical force to the inclined surface and to compact and compact the inclined surface effectively and in a short time.

In Japanese Patent Application Laid-Open No. 11-209980, a moving device that moves along a rail is installed on a self-elevating workbench, and a pair of upper and lower guide keepers provided in the moving device is provided with a columnar member in the axial direction. The upper and lower guide keepers are connected to the middle part (between the upper and lower guide keeper), and the angle of the columnar member is changed by adjusting the mounting angle of the upper and lower guide keeper. There is disclosed a method in which a member is vibrated and rubble is compacted by a tamper at the tip of a columnar member so that a leveling operation can be performed even on an inclined surface of a rubble mound.

However, this method has a structure in which the columnar member is supported by the guide keeper and vibrated vertically, so that a large vertical load cannot be applied to the inclined surface, and the inclined surface can be effectively shortened. Cannot compact and compact in time. In addition, the device also has a complicated mechanism and costs.

[0008] The present invention has been made in view of such circumstances, and an object thereof is to provide a device having a relatively simple configuration.
Underwater rubble leveling device and underwater rubble leveling device that can apply a proper vertical force to inclined surfaces and effectively compact and compact in a short period of time with a large compaction force and a large compaction force It is to provide a method.

[0009]

The invention according to claim 1 is
It is a submersible rubble leveling device that is installed on a workboat to level rubble in the water, and is a construction machine with a boom that can be tilted up and down (for example, a construction machine such as a crawler type such as a hydraulic shovel or a tire type). Lower traveling structure, upper revolving structure, boom),
An underwater rubble leveling device comprising: a telescopic arm tiltably attached to the tip of the boom; and a vibration compaction machine (eg, a hydraulic tamper) mounted to the tip of the telescopic arm. is there. For example, the telescopic arm can be tilted simply by removing the bucket and the arm of the hydraulic shovel and attaching the telescopic arm instead.

According to a second aspect of the present invention, in the underwater rubble leveling device according to the first aspect, the telescopic arm is a telescopic (multistage) hydraulic cylinder. .

According to a third aspect of the present invention, in the underwater rubble leveling device of the first aspect, the telescopic arm is a telescopic (multistage) telescopic member and a hydraulic cylinder that expands and contracts the telescopic member. It is an underwater rubble leveling device.

According to a fourth aspect of the present invention, in the underwater rubble leveling device of the first, second or third aspect, a vibration compaction machine is provided at the lower end of the telescopic arm so as to be tiltable and fixable. This is an underwater rubble leveling device. For example, a hydraulic cylinder for tilting is provided on both sides in the tilting direction of the vibration compaction machine, and the bottom plate of the vibration compaction machine can be tilted and fixed by expansion and contraction of the pair of hydraulic cylinders for tilting.

The invention according to claim 5 is an underwater rubble leveling method for leveling rubble in water by an underwater rubble leveling device installed on a self-elevating type work platform ship, and comprising: Construction machines with booms that can tilt to
A lower traveling unit, an upper revolving unit, and a boom of a construction machine such as a crawler type or a tire type such as a hydraulic excavator), a telescopic arm attached to the tip of the boom so as to be tiltable, Consisting of a vibration compaction machine (for example, hydraulic tamper), while sequentially moving the construction machine,
This is an underwater rubble averaging method characterized in that rubble is compacted with a vibration compaction machine while a load is applied to the rubble by an expansion arm. As the telescopic arm, for example, a telescopic (multi-stage) hydraulic cylinder or a telescopic (multi-stage) telescopic member and a hydraulic cylinder that expands and contracts the telescopic member are used.

According to a sixth aspect of the present invention, there is provided the underwater rubble leveling method according to the fifth aspect, wherein the rubble is compacted while the hull of the self-elevating workbench is raised. It is a method. The self-elevating type work platform boat includes a hull, a plurality of legs, and an elevating device for elevating the legs.

According to a seventh aspect of the present invention, in the underwater rubble leveling method according to the fifth or sixth aspect, the mounting angle of the vibration compaction machine is set in accordance with the design grading gradient of the rubble, and the rubble is compacted. Underwater rubble leveling method.
The vibration compaction machine, for example, arranges a hydraulic cylinder for tilting on both sides in the tilt direction of the vibration compaction machine, and inclines and fixes the bottom plate of the vibration compaction machine by expansion and contraction of the pair of hydraulic cylinders for tilting. To

In the above construction, the boom is raised and lowered, the telescopic arm is made vertical or inclined, and the telescopic arm is extended to position the vibration compaction machine at the lower end of the telescopic arm at a predetermined leveling position. Activate the vibratory compactor to compact and compact the rubble in the water. Vertical compression and compaction is performed by the vibration compaction machine at the tip while forcibly applying a vertical load by the telescopic arm. It can be carried out.

The bottom plate of the vibration compaction machine is tilted by a pair of tilting hydraulic cylinders in accordance with the slope of the rubble mound or horizontal in accordance with the horizontal surface of the rubble mound, and this state is maintained. A street slope or horizontal plane can be obtained.

By slightly lifting the self-elevating workboat with a hydraulic jack or the like of the elevating device, a vertical force required for compaction can be obtained by a vertical reaction force of the leg. The overload due to the ebb and flow of seawater can be absorbed by adjusting the pressure with a relief valve or an accumulator of a hydraulic jack.

By moving the construction machine along the traveling path on the workbench, a certain width can be leveled over a certain length while the workbench is fixed.

[0020]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described based on one embodiment shown in the drawings. This embodiment exemplifies the leveling of an inclined surface of a rubble mound. Although not shown, it goes without saying that the present invention can also be applied to the leveling of the horizontal surface of the rubble mound. FIG. 1 is a side view showing an underwater rubble leveling system having the underwater rubble leveling device of the present invention. 2, 3 and 4 are side, front, and plan views showing details of the underwater rubble leveling device of the present invention.

The underwater rubble leveling system according to the present invention mainly includes an underwater rubble leveling device 1, a self-elevating type work platform boat (hereinafter referred to as SEP) 2, and a global positioning system (hereinafter referred to as GPS). ) Fixed GPS antenna 3 on the base station side
And a control system including a mobile GPS antenna 4 on the SEP side and the like.

As shown in FIGS. 1 to 4, the underwater rubble leveling apparatus 1 is a crawler type construction machine mainly composed of a lower traveling body, an upper revolving superstructure and a boom, for example, with a bucket and an arm removed from a hydraulic shovel. 11, a telescopic arm 12 composed of a telescopic (multistage) hydraulic cylinder, and a vibration compaction machine 13 composed of a hydraulic tamper. The crawler type construction machine 11 may be a traveling type construction machine such as a tire type or a rail traveling type. The vibration compaction machine 13 may be another type of vibration machine.

A hydraulic shovel or the like includes a boom 14 and a hydraulic cylinder 15 for tilting (raising and lowering) the boom in a vertical direction.
And a hydraulic cylinder 16 for tilting (raising and lowering) the arm in the vertical direction. The upper outer cylinder of the telescopic arm 12 is tilted via a pin to the tip of the boom 14 and the tip of the piston rod of the arm tilting hydraulic cylinder 16. Connect as possible. Therefore, the telescopic arm 12 can be moved to a predetermined leveling position by the boom tilting hydraulic cylinder 15 and the arm tilting hydraulic cylinder 16, and can be arranged vertically or inclined.

A vibration compaction machine 13 is connected to the lower end of the lowermost part of the telescopic arm 12 via a pin so as to be tiltable in the direction of the slope a of the rubble mound M, so that it can follow the slope angle of the slope a. It has been like that. Further, the vibration compaction machine 13 and the lowermost part of the telescopic arm 12 are connected by a tamper tilting hydraulic cylinder 17, so that the bottom plate angle of the vibration compaction machine 13 can be adjusted to the designed inclination angle of the inclined surface a and fixed. ing.
The hydraulic cylinder 17 for tilting the tamper is mounted on the vibration compacting machine 13.
The cylinder body is connected to the lowermost part of the telescopic arm 12 via a pin, and the tip of the piston rod is fixed to the operating member 18 horizontally fixed on the upper part of the vibration compaction machine 13 via the pin. Connected.

The SEP 2 is an offshore work table which can be moved on the sea by pulling up its legs, and can be used for offshore work by lifting the hull above the sea surface by grounding the legs on the seabed during work. A plurality (four in the illustrated example) of legs (legs) provided vertically through a corner of the hull 21 in a plan view.
22 and an elevating device 23 installed on the hull 21 to elevate the leg 21.

At the lower end of each leg 22, a plate-like mat 24
Is attached via a pin so as to be tiltable in the direction of the slope a of the rubble mound M, so that the lower end of the leg 22 is prevented from penetrating into the rubble, and the slope a can be grounded. .

The elevating device 23 is a device for raising and lowering the leg 22 by a scale insect method by operating the hydraulic jack 26 by alternately gripping the legs 22 by means of upper and lower two-stage grippers 25, for example. The hull 21 can be lifted with respect to the leg 22, and lowered with respect to the hull 21 for ground contact.

Four ship steering winches 27 are installed on the hull 21 (see FIG. 4). The wire rope 28 of the winch 27 is connected to the land side, the wire rope 28 at one end is taken up, and the other end is wound. By paying out the wire rope 28 of
The hull 21 can be moved along the longitudinal direction of the rubble mound M.

A traveling path 29 of the crawler type construction machine 11 is provided on the hull 21 along the longitudinal direction of the rubble mound M (see FIGS. 2 and 3). This running path 29
A guide wall or the like is erected on both right and left sides, and, for example, a position detector such as an optical type is disposed at a predetermined interval in the traveling direction, and the crawler type construction machine 11 is Detect the position in the traveling direction.

In such an SEP 2, construction management is performed in an operation management room (operation room) 30 provided on the hull 21. That is, as shown in FIG. 1, the artificial satellite S, the fixed GPS antenna 3 of the base station, and the moving GP of the operation control room 30
The position of SEP2 is calculated by the construction management personal computer using the S antenna 4, and the position of SEP2 and the position of the rubble mound M are graphically displayed on the CRT screen.

On the other hand, on the crawler type construction machine 11 side, as shown in FIG. 1, each cylinder is provided with a boom undulation detection sensor 31, an arm vertical detection sensor 32, an arm depth detection sensor 33, and a tamper angle detection sensor 34. Processing the detection data from each sensor on the construction management computer,
Graphic display on the CRT screen in real time. S
The position of the crawler type construction machine 11 on the EP2 is known and constant from the position of the traveling path 29 in the direction perpendicular to the traveling direction (may be detected by a position detector), and is arranged on the traveling path 29 in the traveling direction. The position has been detected by the position detector, and this position is also displayed on the CRT screen.

While watching such a CRT screen, the SEP 2 is moved and the crawler type construction machine 1 is moved as described later.
Operate 1 The operation of the crawler type construction machine 11 is CR
It may be performed manually while watching the T screen, or may be performed automatically by a sensor and a computer.

With the underwater rubble leveling system configured as described above, rubble leveling on an inclined surface is performed as described below.

(1) The construction management personal computer previously stores design position data (three-dimensional coordinates: X, Y,
Z) is input, and the rubble mound M is graphically displayed on the CRT screen. Base station fixed GPS
The position of the SEP2 is calculated by the antenna 3 and the mobile GPS antenna 4 in the operation control room 30, and the SEP2 is guided to a predetermined position while looking at the position of the SEP2 and the position of the rubble mound M graphically displayed on the CRT screen.

(2) The leg 22 of the SEP 2 is lowered, and the mat 24 at the lower end of the leg is landed on the sea bottom. Here, when the SEP 2 swings due to the waves, the leg 22 is further lowered by the lifting / lowering device 23, so that the SEP 2 is raised to a height not affected by the waves.

(3) The calculated position data of SEP2 and
The turning center position of the crawler type construction machine 11 is calculated from the position data of the crawler type construction machine 11 on the SEP2. The boom 14 is turned horizontally if necessary, and further raised and lowered, so that the telescopic arm 12 and the vibration compaction machine 13 are positioned at a predetermined leveling position.

(4) The telescopic arm 12 is extended, and the vibration compaction machine 13 is seated on the rubble. Here, the vibration compactor 13
Is tilted by the tamper tilting hydraulic cylinder 17 so that the bottom plate slope becomes the designed slope of the slope a, and this tilt angle is maintained.

(5) From this state, the vibration compaction machine 13 is started, and tamping is performed until the vibration compaction machine 13 matches the design surface. A vertical compaction is performed by a vibration compaction machine 13 composed of a hydraulic tamper at the tip while a vertical load is forcibly applied by a telescopic arm 12 composed of a telescopic hydraulic cylinder. The leveling operation can be performed effectively in a short time by the compacting force. At this time, the SEP 2 is slightly lifted by the hydraulic jack 26 of the lifting / lowering device 23, so that the vertical reaction force of the leg 22 can provide a vertical force required for compaction. The overload due to the ebb and flow of seawater is absorbed by adjusting the pressure with a relief valve or an accumulator of the hydraulic jack 26.

(6) The crawler type construction machine 11 is
Along with the size of the bottom plate of the vibration compaction machine 13 to perform the leveling operation described above. By sequentially repeating this, it is possible to equalize a certain width over a certain length of the inclined surface a while keeping the SEP2 fixed.

(7) The boom 14 is raised and lowered, and the telescopic arm 12 and the vibration compaction machine 13 are moved by the size of the bottom plate of the vibration compaction machine 13 in the direction of inclination of the inclined surface a. repeat. The order of the steps (6) and (7) may be reversed.

(8) The SEP 2 is sequentially moved by the length of the hull, and the above steps are repeated, whereby the entire slope a of the rubble mound M can be leveled.

Next, FIG. 5 shows a modification of the underwater rubble leveling device of the present invention. The telescopic arm 12 is connected to a telescopic (multistage) telescopic member 40 by a hydraulic cylinder 41 for expansion and contraction. It is constructed as an exterior. The telescopic member 40 includes an outer arm 42 and an inner arm (rod) 43, and the hydraulic cylinder 41 moves the inner arm 43 using the outer arm 42 as a guide. Other configurations are the same as those in FIGS. 1 to 4, and the same operation and effect can be obtained.

When the horizontal surface of the rubble is leveled, the bottom plate of the vibration compaction machine 13 is fixed by the tamper tilting hydraulic cylinder 17 so that the inclination of the bottom plate is horizontal, and the compaction is performed. Also in this case, needless to say, the leveling operation can be performed in a short time with a large compaction force.

[0044]

Since the present invention has the above-described configuration, the following effects can be obtained.

(1) In order to perform compaction and compaction in the vertical direction with the vibration compaction machine at the tip while forcibly applying a vertical load by the telescopic arm at the tip of the boom of the construction machine on the workbench,
Even on an inclined surface, the leveling operation can be performed effectively with a large compaction force in a short time.

(2) The bottom plate of the vibration compactor is inclined by a pair of tilting hydraulic cylinders in accordance with the inclination of the inclined surface of the rubble mound, or is leveled in accordance with the horizontal surface of the rubble mound, and this state is maintained. Thereby, an inclined surface or a horizontal surface as designed can be obtained. In addition, GPS
Control of the ship's position and the control of the construction machine's sensors and computer make it possible to level the slope and rubble as designed.

(3) By slightly lifting the self-elevating workboat with a hydraulic jack or the like of the elevating device, a vertical force required for compaction can be obtained by a vertical reaction force of the leg. Leveling work by a vibration compaction machine becomes possible. In addition, the overload can be absorbed by adjusting the pressure using a relief valve of a hydraulic jack or an accumulator, etc., so that unnecessary load is not applied to the leg of the self-elevating workbench, which is economical.

(4) By moving a construction machine equipped with a telescopic arm and a vibration compaction machine along a traveling path on a workbench,
A certain width can be effectively leveled over a certain length in a short time while the workboat is fixed.

(5) Since it is only necessary to attach the telescopic arm and the vibration compaction machine to the construction machine such as a hydraulic excavator from which the bucket and the arm have been removed, a simple mechanism can be achieved, and the cost can be reduced. it can.

[Brief description of the drawings]

FIG. 1 is a side view showing an underwater rubble leveling system having the underwater rubble leveling device of the present invention.

FIG. 2 is a side view showing an embodiment of the underwater rubble leveling device of the present invention.

FIG. 3 is a front view of FIG. 2;

FIG. 4 is a plan view of FIG. 2;

FIG. 5 is a side view showing a modified example of the underwater rubble leveling device of the present invention.

[Explanation of symbols]

 M: rubble mound a ... sloping surface 1 ... submerged rubble leveling device 2 ... self-elevating type work platform (SEP) 3 ... fixed GPS antenna 4 ... moving GPS antenna 11 ... crawler type construction machine 12 ... telescopic arm (telescope type) 13 ... vibration compaction machine (hydraulic tamper etc.) 14 ... boom 15 ... boom tilting hydraulic cylinder 16 ... arm tilting hydraulic cylinder 17 ... hydraulic cylinder for tamper tilting 18 ... operating member 21 ... hull 22 ... leg 23 ... Lifting device 24 ... Mat 25 ... Grip device 26 ... Hydraulic jack 27 ... Ship control winch 28 ... Wire rope 29 ... Runway 30 ... Operation management room 31 ... Boom undulation detection sensor 32 ... Arm vertical detection sensor 33 ... Arm depth detection sensor 34 ... Tamper angle detection sensor 40 ... Telescopic member 41 ... Hydraulic cylinder 42 ... Outer arm 43 ... Outer arm

Claims (7)

[Claims] 1. An underwater rubble leveling device installed on a workbench for leveling rubble in water, comprising: a construction machine having a boom capable of tilting in a vertical direction; and a tilting attached to a tip of the boom. An underwater rubble leveling device, comprising: a telescopic arm which is provided and a vibration compaction machine attached to a tip of the telescopic arm. 2. The underwater rubble leveling device according to claim 1, wherein the telescopic arm is a telescopic hydraulic cylinder. 3. The underwater rubble leveling device according to claim 1, wherein the telescopic arm is a telescopic telescopic member and a hydraulic cylinder that expands and contracts the telescopic member. 4. The underwater rubble leveling device according to claim 1, wherein a vibration compaction machine is provided at the lower end of the telescopic arm so as to be tiltable and fixable. . 5. An underwater rubble leveling method for leveling rubble in water using an underwater rubble leveling device installed on a self-raising type work platform ship, wherein a boom capable of vertically tilting the underwater rubble leveling device is provided. Construction machine, a telescopic arm attached to the tip of the boom so as to be tiltable, and a vibration compaction machine attached to the tip of the telescopic arm. Underwater rubble leveling method characterized by compacting rubble with a vibratory compaction machine while applying a load. 6. The compaction of rubble while the hull of a self-elevating workbench is raised.
Underwater rubble leveling method described in 1. 7. The underwater rubble leveling according to claim 5, wherein the compaction of the rubble level is performed by setting an attachment angle of the vibration compaction machine according to a design leveling gradient of the rubble level. Method.