JPH0813539A - Underwater walking type dredging method and dredger - Google Patents

Abstract

PURPOSE:To perform the dredging operation on a water bottom speedily and accurately by excavating and discharging earth and sand on the water bottom by means of a rotary cutter as shifting a walking beam and a restrained beam alternately forward by remote control. CONSTITUTION:Both front and rear support legs 22 and 23 of a pair of walking beams 21 and 21 are contracted by remote control and then these walking beams 21 are driven and advanced forward in relation to a cross beam 11. Next, after constant length is moved, both these support legs 22 and 23 are extended to some extend and installed on each head of two piles 37 and 37. In succession, both front and rear support legs 22 and 23 of a pair of restrained beams 12 and 16 are contracted and then each driving part of the walking beams 21 is driven in reverse, the paired restrained beams 12 and 16 are moved frontward together with the cross beam 11 in relation to the walking beams 21. Successively the support legs 22 and 23 are extended to some extend and installed in each head part of the piles 37. Thus, as walking a dredger underwater, a traverse saddle 26 is traveled in both directions on the cross beam 11, and a rotary cutter 31 at the lower end of an expansion beam 32 is traveled in all directions, thereby excavating a water bottom 7.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dredging method and a dredging machine for excavating soil and the like at the bottom of a water with a rotary cutter while walking in water by remote control from above the water, and particularly to the dredging machine in advance by remote control. TECHNICAL FIELD The present invention relates to a dredging method and a dredging machine in which a support leg is reliably placed on the head of a pile driven into the bottom of the water while walking to excavate the bottom of the bottom with a rotary cutter, and the water and the water are discharged by a pump.

[0002]

2. Description of the Related Art Conventionally, when installing a submarine for a road on the bottom of a water dredger or a water bottom, a ladder attached to a tip of a boat attached to a ship on the sea is lowered to the bottom of the water, and the cutter is moved to the left or right. On the other hand, the sediment on the bottom of the water was taken into the cutter, and was discharged along with water from the suction port in the cutter onto the ship to dredge the bottom of the water. Then, as shown in FIG. 7, the apparatus fixes the pontoon 1 by the fixing piles 2 driven into the water bottom, and the tip of the ladder 3 provided on the pontoon 1 mounts the crane 4 on the ship.
It is hung on the wire rope 5 taken off from the ship and winches 6 on the ship.
To drive it down to the bottom 7. A cutter 8 is provided at the tip of the ladder 3, and the ladder 3 is pulled laterally by a winch 6 to move the cutter 8 left and right at the water bottom 7 to excavate the water bottom 7. Is discharged through a suction pipe 9 arranged in the ladder 3 by a sand pump 10 provided on the ship.

[0003]

However, in the method of lowering the ladder with the cutter attached to the tip attached to the ship to the bottom of the water and dredging the bottom of the water as described above, the length of the ladder increases as the depth of dredging becomes deeper. Need to be bigger,
In addition, because of this, the berth becomes large and there is a problem in economic efficiency. In addition, the barge sways due to the influence of wind and waves, and the height of the excavation cutter fluctuates.
Furthermore, if there are obstacles on the seabed, it is difficult to avoid them and to perform accurate dredging.

The present invention has been completed in view of the above circumstances, and provides a dredging method and a dredging machine for excavating the sand and the like at the bottom of a water by a rotary cutter while walking in water by remote control from the water and discharging it together with the water. It is intended to be provided.

[0005]

In order to achieve the above-mentioned object, the present invention comprises a pair of fixed beams which can be pivoted on a lateral beam and a pair of other movable beams which can be moved in the front-rear direction. The movable leg is provided with adjustable support legs before and after the fixed beam and the movable beam, and a traverse saddle having an extendable beam adjustable in the front-rear direction is provided on the transverse beam. In the dredging method performed by using an underwater walking dredger equipped with an expandable boom equipped with a rotating cutter at the lower end of the beam, the fixed beam and the moving beam are driven by remote control to drive the dredger underwater. Walk
Next, while the traverse saddle is running on the transverse beam, the expandable beam is controlled to excavate the water bottom in the front, rear, left and right by the rotary cutter provided at the lower end of the boom. It is an underwater walking type dredging method characterized by dredging the bottom of the water by discharging together with it.Also, a pair of fixed beams are rotatably attached to the lateral beam, and another pair of moving beams can be moved in the front-back direction. The fixed beam and the movable beam are provided with support legs that can be adjusted up and down, and a traverse saddle that can travel is provided on the traverse beam, and the traverse saddle can be adjusted in the longitudinal direction. With a telescopic beam,
The underwater walking dredger is characterized in that the telescopic beam is provided with a telescopic boom provided with a rotary cutter at a lower end thereof so as to project therefrom.

[0006]

Next, the operation of the above-mentioned underwater walking type dredging method and the operation of the dredging machine will be described. When the dredging machine is made to walk by remote control from the water, the front and rear supporting legs of the pair of moving beams which can be adjusted are shortened. After that, the moving beam is driven to move forward with respect to the lateral beam, and after moving for a certain length, the adjustable supporting leg is extended and installed on the head of the pre-dried pile. Next, after the adjustable front and rear support legs of the pair of fixed beams are contracted, the movable beam driving unit is reversely driven to move the fixed beam together with the lateral beam forward with respect to the movable beam, and then the adjustment is possible. The support legs are extended and the dredger is installed on the head of the pile that has been driven in advance to walk forward in the water. After advancing and installing the dredger in the water in this way, the traverse saddle is moved left and right on the transverse beam to move the rotary cutter at the lower end of the extendable boom forward, backward, leftward and rightward to excavate the bottom of the water. The excavated sludge is discharged together with water through a mud-sending hose by a sand pump installed near the rotary cutter to perform dredging work on the bottom of the water.

When changing the advancing direction of the dredging machine, the adjustable front and rear supporting legs of the pair of moving beams are contracted while the parallel fixed beams are installed on the heads of the piles which have been driven in advance. After moving the moving beam forward, the direction correcting cylinder connected between the horizontal beam and one of the fixed beams is expanded and contracted, and the lateral beam is swung with respect to the fixed beam together with the pair of moving beams. After the direction is thus corrected, the pair of moving beams are placed on the heads of the piles that have been driven in in advance, and then the adjustable front and rear support legs of the pair of fixed beams are contracted and floated from the pile to correct the direction. By driving a cylinder and a swing cylinder connected between the lateral beam and the other fixed beam to return both fixed beams to their original parallel positions, it is possible to change the direction of the entire body and move it forward.

[0008]

Embodiments of the present invention will now be described with reference to the drawings. 1 to 3 show an embodiment of the present invention, FIG. 1 is an overall side view of this embodiment, and FIG. 2 and FIG.
[FIG. 7] is a plan view for explaining the operation of the present embodiment. In this embodiment, the horizontal beam 11 and one fixed beam 12 are rotatably attached, and specifically, as shown in FIGS. 2 and 4, they have an arc shape with a rotation center A and a radius R. Turning guide 1
3 is arranged in a similar circular arc-shaped support frame 14 provided on the lateral beam 11, and the turning guide 13
Is moved by the hydraulic cylinder 15 for direction correction,
The fixed beam 12 is rotated with respect to the lateral beam 11. Also,
The horizontal beam 11 and the other fixed beam 16 are also rotatably mounted. In this embodiment, the fixed beam 16 is a swing frame 17 and a fixed beam 16 provided on the horizontal beam 11 as shown in FIGS. 2 and 5. The fixed beam 16 is rotatably attached to each other by a swivel base 18 provided on the horizontal beam 11. The fixed beam 16 is swung with respect to the lateral beam 11 by a swiveling hydraulic cylinder 19 connected to the lateral beam 11 and the fixed beam 16.
Further, at both ends of the horizontal beam 11, the movable beams 21 and 21 are held by a plurality of guide rollers 20 provided on the horizontal beam 11 so that the movable beams 21 and 21 can be moved in the front-rear direction with respect to the horizontal beam 11 by a hydraulic cylinder (not shown). It is arranged.

As shown in FIGS. 1 and 6, a front support leg 22 and a rear support leg 23 which can be adjusted up and down are provided in front of and behind the fixed beams 12 and 16 and the movable beams 21 and 21, respectively. Each front support leg 22 is provided with a guide 2 that is adjustable in the front-back direction for each beam.
4, the rear support legs 23 are provided by a guide 25 so as to be movable in the front-rear direction with respect to the respective beams. A gripper 22a and a flange 22b are provided at the sharp lower ends of the support legs 22 and 23 for fixing to the pile head.

On the other hand, a traverse saddle 26 capable of traveling is disposed on the traverse beam 11, and the traverse saddle 26 is provided.
Can be moved laterally above the transverse beam 11 by a guide roller 27, and a telescopic beam 28 is supported by the traverse saddle 26 via a guide roller 29. The telescopic beam 28 is provided on the traverse saddle 26. It is driven in the front-back direction by the expansion and contraction pinion 30. Note that reference numeral 30a
Is a rack fixed to the telescopic beam 28. An extendable boom 32 having a rotary cutter 31 at its lower end is provided at the tip of the extendable beam 28 so as to extend. The extendable boom 32 comprises an inner cylinder 32a and an outer cylinder 32b. Further, a suction port 34 of a sand pump 33 is provided near the rotary cutter 31 provided at the lower end of the extendable boom 32, and excavation shear generated by excavating the rotary cutter 31 is prevented by the sand pump 33. It is sent to the earth and sand carrier 36 along with water through the mud hose 35. Reference numeral 37 is a pile that has been driven into the water bottom 7 in advance.

Next, the operation of this embodiment will be described. When the dredger of this embodiment is walked forward from the water by remote control, the pair of moving beams 21 provided at both ends of the lateral beam 11 are moved forward and backward. After all the vertically adjustable support legs 22 and 23 provided in the above are retracted and separated from the pile 37, the two moving beams 21 are driven by a hydraulic cylinder (not shown) and moved forward with respect to the lateral beam 11. Then, after moving forward by a certain length, the adjustable support leg 2
2 and 23 are respectively extended and the sharp lower ends of the support legs 22 and 23 are inserted into the holes of the heads of the piles 37 that have been driven into the bottom of the water in advance, and the flanges 22b of the support legs 22 and 23 are installed on the pile heads. Fixed by. Next, the vertically adjustable support legs 22 and 23 provided at the front and rear of the pair of fixed beams 12 and 16 are respectively contracted, and then a hydraulic cylinder (not shown) of the movable beam 21 is reversely driven to move the movable beam 21. Against transverse beam 11 and fixed beam 1
Move 2, 16 forward. Thereafter, the adjustable support legs 22 and 23 are respectively extended and installed on the heads of the piles 37 which have been previously driven into the bottom of the water in the same manner as described above, whereby the dredger is made to walk and advance in water. At this time, even if the sharp lower ends of the support legs 22 and 23 and the positions of the piles 37 do not coincide with each other, each front support leg 22 is also laterally moved by the guide 24 which is adjustable in the front-back direction with respect to the beam. Since the rear support legs 23 are movable in the front-rear direction with respect to the respective beams by the guide 25, the rear support legs 23 can be easily adjusted to secure the respective support legs 22, 23 to the head of the pile 37. Can be inserted into.

In the present embodiment, the dredger is thus walked forward in the water and installed on the heads of the piles 37 that have been previously driven into the bottom of the water, and then the traverse saddle 26 is driven on the transverse beam 11 (not shown). The telescopic beam 28 is extended by the telescopic pinion 30 provided in the traverse saddle 26 while traveling left and right by the traverse saddle 26, and the up and down expandable boom 32 projecting from the tip of the telescopic beam 28 is rotated forward and backward by the rotary cutter 31 at the lower end. Boom 3 which excavates the water bottom while moving left and right, and at which the excavated shear can be expanded and contracted.
2 The suction is performed from the suction port 34 of the sand pump 33 arranged near the rotary cutter 31 at the lower end,
The water is sent together with water to the earth and sand carrier 36 through the mud-sending hose 35. In this way, the present embodiment can be carried out while the water is dredging on the bottom of the water or the bottom of the water for installing a submarine for the road on the bottom of the water by walking remotely in the water.

Further, when the traveling direction of the dredging machine body of the present embodiment is changed, the fixed beams 12 and 16 parallel to each other as described above are installed on the head of the pile 37 which is driven into the water bottom. All four adjustable support legs 24, 25 provided at the front and rear of the pair of moving beams 21 provided at both ends of the lateral beam 11 are contracted to form the two moving beams 2
1 is moved to the front, and then an arcuate turning guide 13 arranged in a support frame 14 of the lateral beam 11 is moved by a hydraulic cylinder 15 for correcting the direction so that the lateral beam 1
1 with respect to the fixed beam 12 together with the two moving beams 21. In this way, the lateral beam 11 is turned together with the two moving beams 21 by the angle θ with respect to the fixed beam 12, and then the two moving beams 21 are preliminarily driven into the bottom of the water. Inside each support leg 2
After inserting the sharp lower end portions of Nos. 2 and 23, installing the flange 22b on the pile head, and mounting and fixing by the gripper 22a, this time, the front and rear support legs of the pair of fixed beams 12 and 16 that can be adjusted up and down. Pile 37 by shrinking all 22 and 23
The hydraulic cylinder 15 for correcting the direction.
And the swiveling cylinder 19 connected between the transverse beam 11 and the other fixed beam 16 so as to swivel the two fixed beams 12 and 16 in the opposite direction by an angle θ to return them to their original parallel positions. With this, it is possible to change the direction of the entire body and move it forward.

Therefore, according to this embodiment, the rotary cutter at the lower end of the extendable boom is moved forward, backward, leftward and rightward while reliably walking forward on the heads of the piles that have been driven into the water bottom by remote control from above the water. The bottom of the sand can be excavated evenly, and the excavation generated at that time is sucked from the suction port of the sand pump installed near the rotating cutter at the lower end of the expandable boom, and is passed through the mud sending hose together with the water by the sand pump. Since it is sent to a sand carrier, it is possible to perform dredging work reliably without being affected by waves, and moreover, it is possible to perform dredging work accurately only by remote control from the water, without underwater work by a diver. .

[0015]

As described above, according to the present invention, the fixed beam and the movable beam are driven by remote operation from the water to allow the dredger to freely walk in the water, and the traverse saddle is placed on the horizontal beam. While running the car, the expandable beam is controlled to excavate the water bottom in the front, rear, left, and right by the rotary cutter provided at the lower end of the boom, and the excavation shear that occurs at that time is discharged with the sand pump, so the water depth is deep. Even while walking forward on the bottom of the water, dredging work on the bottom of the water can be performed quickly and accurately without being affected by waves on the bottom of the water, and even if there are obstacles on the bottom of the water, without diving underwater by a diver, The dredging work around the obstacle can be accurately performed only by remote control of.

The front support legs are arranged in front of and behind each beam,
Since it can be moved in the left-right direction and the rear support legs can be moved in the front-rear direction, the support legs can be remotely and automatically installed securely on the head of a pile that has been driven in beforehand. . Therefore, according to the present invention, the dredging work on the water bottom and the water bottom dredging work for setting a submarine for the road on the water bottom can be performed securely while freely walking the underwater dredge by remote operation from a safe surface. There is an effect that can be.

[Brief description of drawings]

FIG. 1 is an explanatory diagram of the present embodiment.

FIG. 2 is an explanatory plan view of the present embodiment.

FIG. 3 is an explanatory plan view for explaining the operation of the present embodiment.

FIG. 4 is a partially enlarged explanatory view of the present embodiment.

FIG. 5 is a partially enlarged explanatory view of the present embodiment.

FIG. 6 is a partially enlarged explanatory view of the present embodiment.

FIG. 7 is an explanatory diagram of a conventional example.

[Explanation of symbols]

 11 horizontal beam 12, 16 fixed beam 13 swivel guide 14 support frame 15, 19 hydraulic cylinder 17 swivel frame 18 swivel base 20, 27, 29 guide roller 21 moving beam 22 front support leg 23 rear support leg 24, 25 guide 26 transverse saddle 28 Telescopic Beam 30 Telescopic Pinion 31 Rotating Cutter 32 Telescopic Boom 33 Sand Pump 34 Suction Port 35 Mud Hose 36 Sediment Carrier 37 Pile

 ─────────────────────────────────────────────────── ─── Continuation of front page (71) Applicant 000005924 Mitsui Miike Manufacturing Co., Ltd. 2-1-1 Nihombashi Muromachi, Chuo-ku, Tokyo (72) Inventor Hiroshi Iguchi 615-2-262 Noba-cho, Konan-ku, Yokohama-shi, Kanagawa (72) Inventor Nobuo Kubota 1827-10 Shinji, Chiyoda-cho, Shinji-gun, Ibaraki Prefecture (72) Inventor Shin-ichi Kagawa 72-1-310 Yamaya, Minami-ku, Yokohama-shi Kanagawa (72) Toshiaki Maruyama Shibakubo-cho, Tanashi-shi, Tokyo 1-6-16 Tokyo Metropolitan Government Dandanu single dormitory (72) Inventor Yoshimi Tokaibayashi 3154 Obuchi, Fuji City, Shizuoka Prefecture Japan Construction Mechanization Association Construction Mechanization Research Institute (72) Nobuyuki Matsui 2-minamiono, Ichikawa City, Chiba Prefecture 3 C612 (72) Inventor Kazutoshi Tsuji 2-28 Asahi-cho, Omuta-shi, Fukuoka Stock company Mitsui Miike Works Miike Plant

Claims (4)

[Claims] 1. A pair of fixed beams, which are rotatable on the lateral beams, and a pair of other movable beams, which are movable in the front-rear direction, are arranged, and the supports are adjustable up and down before and after the fixed beams and the movable beams. A leg is provided, and a traversing traverse saddle provided with a telescopic beam that can be adjusted in the front-rear direction is provided on the transverse beam, and the telescopic beam is provided with an extendable boom having a rotary cutter at the lower end. In the dredging method performed by using the underwater walking type dredger, the fixed beam and the moving beam are driven by remote control to cause the dredge to walk in water.
Next, while the traverse saddle is running on the traverse beam, the expandable beam is controlled to excavate the water bottom in the front, rear, left, and right by the rotary cutter provided at the lower end of the boom, and the excavation shear generated at that time is discharged together with water by the pump. An underwater walking type dredging method characterized by dredging the bottom of the water. 2. When the dredger is walking in the water, the adjustable supporting legs of the fixed beam and the movable beam are automatically placed by remote control on the head of a pile that has been driven in advance. The underwater walking type dredging method according to claim 1, wherein the dredging machine is made to walk underwater. 3. A pair of fixed beams are rotatably attached to the horizontal beam, and a pair of other movable beams are movably arranged in the front-rear direction, and can be vertically adjusted before and after each fixed beam and the movable beam. A support leg is provided, and a traverse saddle capable of traveling is arranged on the transverse beam, and a telescopic beam that can be adjusted in the front-rear direction is disposed on the traverse saddle. An underwater walking dredger, which is equipped with an extendable boom. 4. Among the support legs provided before and after the fixed beam and the movable beam, which are adjustable in the vertical direction, the front support leg is movable in the front-back and left-right directions with respect to the beam, and the rear support leg is The underwater walking dredger according to claim 3, wherein the dredger is attached so as to be movable in the front-rear direction.