JP2751007B2 - Underwater walking dredging method and dredging machine - Google Patents

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 earth and sand at a water bottom by a rotary cutter while walking in water by remote control from above the water and discharging the excavated water together with the water. The present invention relates to a dredging method and a dredging machine in which a support leg is securely placed on a head of a pile driven into a water bottom, and while walking, a soil or the like at the water bottom is excavated by a rotary cutter and discharged with a pump together with water.

[0002]

2. Description of the Related Art Conventionally, when dredging a water floor or installing a submersible for a road on the water floor, a ladder with a cutter attached to the tip of a ship at sea is lowered to the water floor, and the cutter is moved left and right. While the earth and sand from the water bottom was taken into the cutter, it was discharged onto the ship with water from the suction port in the cutter, and the water bottom was dredged. Then, as shown in FIG. 7, the apparatus fixes the barge 1 with a fixed pile 2 driven into the water bottom, and attaches the tip of a ladder 3 provided on the barge 1 to a crane 4 on the ship.
Suspended on a wire rope 5 lowered from the
Is driven and lowered to the water 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 right and left at the water bottom 7 to excavate the water bottom 7. Is discharged through a suction pipe 9 provided in the ladder 3 and by a sand pump 10 provided on the ship.

[0003]

However, in the method of dropping the rudder attached with a cutter to the tip attached to the ship to the bottom of the water as described above and dredging the water bottom, the length of the rudder increases when the water to be dredged becomes deeper. Need to be bigger,
In addition, the size of the barge becomes large, which causes a problem in economy. Further, there is a disadvantage that the barge shakes due to the influence of wind and waves, so that the height of the excavating cutter fluctuates and uniform excavation cannot be performed.
Further, when there is an obstacle on the seabed, there is a drawback that accurate dredging cannot be performed by avoiding the obstacle.

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

[0005]

According to the present invention, a pair of fixed beams rotatable on a horizontal beam and another pair of movable beams movable in a front-rear direction are provided to achieve the above object. A movable traverse saddle having a telescopic beam adjustable in the front-rear direction is provided on the horizontal beam, and a support leg adjustable up and down is provided before and after each fixed beam and the movable beam; In the dredging method performed using a submersible walking dredge equipped with a telescopic 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 dredge underwater. Let them walk,
Then, while the transverse saddle is running on the transverse beam, the extensible beam is controlled by controlling the extendable beam, and a water cutter is provided at the lower end of the boom to excavate the water bottom in front, rear, left and right directions. This is a submersible walking dredging method characterized by dredging the bottom of the water by discharging together with a pair of fixed beams rotatably attached to the horizontal beam and moving the other pair of moving beams in the front-rear direction. , A support leg which can be adjusted up and down before and after each fixed beam and moving beam, and a traversable transverse saddle is arranged on the transverse beam, and the transverse saddle can be adjusted in the longitudinal direction. With a flexible telescopic beam,
An underwater walking dredging machine characterized in that a telescopic boom having a rotating cutter is protruded from a lower end of the telescopic beam.

[0006]

Next, the operation of the underwater walking dredging method and the dredging machine will be described. When the dredging machine is walked from the water by remote control, the adjustable front and rear support legs of the pair of moving beams are shortened. Thereafter, the moving beam is driven to advance with respect to the lateral beam, and after a certain length of movement, the adjustable support leg is extended and installed on the head of the previously driven pile. Next, after the adjustable front and rear support legs of the pair of fixed beams are contracted, the driving unit of the moving beam is reversely driven to move the fixed beam forward with the transverse beam with respect to the moving beam, and then the adjustable beam is adjustable. With the supporting legs extended, the dredger mounted on the head of the previously driven pile will walk forward in water. After the dredging machine is moved forward in the water and installed in this way, the horizontal saddle is moved left and right on a horizontal beam to excavate a water bottom while moving the rotary cutter at the lower end of the extendable boom back and forth and left and right. The excavated waste is drained together with water through a mud sending hose by a sand pump provided near the rotary cutter to perform dredging work on the water bottom.

When the traveling direction of the dredging machine is to be changed, the adjustable front and rear support legs of the pair of moving beams are contracted while the parallel fixed beams are installed on the head of the previously driven pile. Then, 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 horizontal beam is rotated with the pair of moving beams with respect to the fixed beam. After the direction correction in this way, the pair of movable beams are placed on the head of the previously driven pile, and then the adjustable front and rear support legs of the pair of fixed beams are retracted and lifted from the pile to correct the direction. By driving a cylinder and a swivel cylinder connected between the transverse beam and the other fixed beam to return both fixed beams to the original parallel position, the entire body can be changed in direction and advanced.

[0008]

Next, embodiments of the present invention will be described with reference to the drawings. 1 to 3 show one embodiment of the present invention. FIG. 1 is an overall side view of the present embodiment, and FIGS.
Is a plan view for explaining the operation of the present embodiment. In this embodiment, the horizontal beam 11 and one of the fixed beams 12 are rotatably attached. Specifically, as shown in FIGS. Swing guide 1
3 is disposed in a support frame 14 having a similar arc shape provided on the horizontal beam 11.
Is moved by the hydraulic cylinder 15 for correcting the direction,
The fixed beam 12 is rotated with respect to the horizontal beam 11. Also,
The horizontal beam 11 and the other fixed beam 16 are also rotatably mounted. In the present embodiment, the fixed beam 16 is a swivel frame 17 and a fixed beam 16 provided on the horizontal beam 11 as shown in FIGS. The fixed beam 16 is rotatably attached to the horizontal beam 11 by a horizontal beam 11 and a hydraulic cylinder 19 for rotation connected to the fixed beam 16.
Further, at both ends of the horizontal beam 11, the moving beams 21 and 21 are sandwiched by a plurality of guide rollers 20 provided on the horizontal beam 11 so that the moving beams 21 and 21 can be moved in the front-rear direction 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 respectively provided before and after each of the fixed beams 12 and 16 and each of the movable beams 21 and 21. Each front support leg 22 is provided with a guide 2 that can be adjusted in the front-rear direction with respect to each beam.
The rear support legs 23 are provided by guides 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 that can travel is disposed on the horizontal beam 11, and the traverse saddle 26
The guide roller 27 allows the upper part of the horizontal beam 11 to be moved in the horizontal direction, and a telescopic beam 28 is supported on the horizontal saddle 26 via a guide roller 29. The telescopic beam 28 is provided on the horizontal saddle 26. It is driven in the front-rear direction by the telescopic pinion 30. Note that reference numeral 30a
Is a rack fixed to the telescopic beam 28. An extensible boom 32 provided with a rotary cutter 31 at a lower end is protruded from a distal end of the extensible beam 28, and the extensible boom 32 includes an inner cylinder 32a and an outer cylinder 32b. A suction port 34 of a sand pump 33 is provided near the rotary cutter 31 provided at the lower end of the telescopic boom 32, and the excavated shear generated by the excavation of the rotary cutter 31 is removed by the sand pump 33. The water is sent to the earth and sand carrier 36 through the mud sending hose 35 together with the water. Reference numeral 37 denotes a pile previously driven into the water bottom 7.

Next, the operation of this embodiment will be described. When the dredging machine of this embodiment is walked and advanced by remote control from above the water, a pair of moving beams 21 provided at both ends of the horizontal beam 11 are moved forward and backward. After the support legs 22 and 23 which can be adjusted up and down are all retracted and separated from the stake 37, the two moving beams 21 are driven by a hydraulic cylinder (not shown) to advance with respect to the horizontal beam 11. After a certain length of advance, the adjustable support leg 2
The sharp lower ends of the supporting legs 22, 23 are inserted into the holes of the head of the pile 37, which has been previously driven into the water bottom by extending the two, 23, respectively, and the flanges 22b are mounted on the pile head and the grippers 22a are mounted. Fixed by. Next, after vertically supporting support legs 22 and 23 provided before and after the pair of fixed beams 12 and 16 are respectively contracted, a hydraulic cylinder (not shown) of the moving beam 21 is driven in reverse to move the moving beam 21. Fixed beam 1 with horizontal beam 11
2 and 16 are moved forward. Thereafter, the adjustable support legs 22 and 23 are respectively extended and installed on the head of the pile 37 previously driven into the water bottom in the same manner as described above, so that the dredger walks forward in the water. In this case, even if the sharp lower ends of the support legs 22 and 23 do not coincide with the positions of the piles 37, the front support legs 22 are also moved in the lateral direction by the guides 24 that can be adjusted in the front-rear direction with respect to the beam. Since each rear support leg 23 is provided so as to be movable in the front-rear direction with respect to each beam by the guide 25, it is easily adjusted so that each support leg 22, 23 is securely mounted on the head of the pile 37. Can be inserted.

In this embodiment, the dredging machine is walked and advanced in the water, and is mounted on the head of a pile 37 previously driven into the water bottom. The telescopic beam 28 is extended by the telescopic pinion 30 provided on the traversing saddle 26 while traveling left and right, and the vertically movable telescopic boom 32 protruding from the distal end of the telescopic beam 28 is used to rotate the front and rear by the rotating cutter 31 at the lower end. Boom 3 that excavates the water bottom flat while moving it to the left and right, and the excavated shears can expand and contract
(2) suction from a suction port 34 of a sand pump 33 disposed near the rotary cutter 31 at the lower end;
The water is sent to the earth and sand carrier 36 through the mud sending hose 35 together with the water by 3. In this manner, in this embodiment, the dredging of the water bottom and the dredging of the water bottom for installing the submersible for the road on the water bottom can be performed while walking forward in the water by remote control from above.

When changing the traveling direction of the dredging machine of the present embodiment, the parallel fixed beams 12, 16 are installed on the head of the pile 37 driven into the water bottom as described above. The four vertically adjustable support legs 24 and 25 provided before and after a pair of moving beams 21 provided at both ends of the horizontal beam 11 are all contracted to form the two moving beams 2.
After the front beam 1 is moved forward, the arc-shaped turning guide 13 disposed in the support frame 14 of the side beam 11 is moved by a hydraulic cylinder 15 for correcting the direction of the side beam 1.
1 is swiveled with respect to the fixed beam 12 together with the two moving beams 21. After turning the lateral beam 11 together with the two moving beams 21 with respect to the fixed beam 12 by the angle θ in this manner, the two moving beams 21 are bored in the head of the pile 37 previously driven into the water bottom. Inside each support leg 2
After inserting the sharp lower ends of the pair 2 and 23, mounting the flange 22b on the pile head and mounting and fixing the same by the gripper 22a, the front and rear support legs of the pair of fixed beams 12, 16 can be adjusted up and down. Shrink all 22 and 23 and pile 37
From the direction correcting hydraulic cylinder 15
And the swing cylinder 19 connected between the horizontal beam 11 and the other fixed beam 16 are driven together to swing the two fixed beams 12, 16 in the opposite direction by the angle θ to return to the original parallel position. Thereby, it is possible to change the direction of the entire body and move forward.

Therefore, according to the present embodiment, the rotary cutter at the lower end of the extensible boom is moved forward, backward, left and right by remote operation from above the water while walking and moving forward on the head of the pile previously driven into the water bottom. The water bottom can be excavated flat and the excavated shear generated at that time is sucked from the suction port of the sand pump provided near the rotary cutter at the lower end of the extendable boom, and passes through the mud hose with water by the sand pump. Can be dredged reliably without being affected by waves, and dredging work can be performed accurately only by remote control from the water, without underwater work by divers. .

[0015]

As described above, according to the present invention, the fixed beam and the movable beam are driven by remote control from above the water to allow the dredger to freely walk in the water, and the traversing saddle is placed on the horizontal beam. The extensible beam is excavated in the front and rear and right and left by the rotating cutter provided at the lower end of the boom while controlling the extendable beam while traveling at the same time, and the excavated shear generated at that time is discharged together with the water by the sand pump, so that the water depth is deep. The water bottom can be dredged quickly and accurately without being affected by waves on the water while walking forward on the bottom without fail. The dredging operation around the obstacle can be performed accurately only by remote control of the vehicle.

Further, the front support legs are forward and backward with respect to each beam,
Since it is movable in the left-right direction and the rear support leg is movable in the front-rear direction, the support leg can be automatically and securely installed on the head of the previously driven pile by remote control. . Therefore, in the present invention, dredging work on the bottom of the water or submerged dredging work for installing a submersible for roads on the bottom of the water, etc., can be reliably performed while the dredging machine can freely walk in the water by remote control from safe water. There is an effect that can be.

[Brief description of the 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]

 DESCRIPTION OF SYMBOLS 11 Lateral beam 12, 16 Fixed beam 13 Swivel guide 14 Support frame 15, 19 Hydraulic cylinder 17 Swivel frame 18 Swivel table 20, 27, 29 Guide roller 21 Moving beam 22 Front support leg 23 Rear support leg 24, 25 Guide 26 Traverse saddle 28 Telescopic Beam 30 Telescopic Pinion 31 Rotary Cutter 32 Telescopic Boom 33 Sand Pump 34 Suction Port 35 Mud Feeding Hose 36 Sediment Carrier 37 Pile

──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Hiroshi Iguchi 615-2-262 Nobamachi, Konan-ku, Yokohama-shi, Kanagawa Prefecture (72) Inventor Nobuo Kubota 1827-10 Shinji, Chiyoda-cho, Shinji-gun, Ibaraki Prefecture (72) Inventor Shinichi Kawa 72-1-310 Yamatani, Minami-ku, Yokohama-shi, Kanagawa Prefecture (72) Inventor Toshiaki Maruyama 1-16-16, Shibakubo-cho, Tanashi-shi, Tokyo In the dormitory of a single bachelor in the capital, Kodandan (72) Yoshimi Tokaibayashi 3154 Obuchi, Fuji-shi, Shizuoka Address Japan Construction Mechanization Association Construction Mechanization Research Laboratory (72) Inventor Nobuyuki Matsui 2-32 Minami-Ono, Ichikawa-shi, Chiba C72 (72) Inventor Kazuki Tsuji 2-28 Asahi-cho, Omuta-shi, Fukuoka Mitsui Co., Ltd. Miike Works Miike Works (56) References JP-A-5-187035 (JP, A) JP-A-5-39623 (JP, A) JP-A 5-187036 (JP, A) Hei 3-122143 (JP, U) (58) Fields investigated (Int. Cl. ⁶ , DB name) E02F 3/92 E02F 5/00

Claims (4)

(57) [Claims] 1. A pair of fixed beams rotatable on a horizontal beam and another pair of movable beams movable in the front-rear direction, and a support adjustable up and down before and after each fixed beam and the movable beam. A movable transverse saddle having a leg and a telescopic beam adjustable in the front-rear direction is provided on the lateral beam, and the telescopic beam is provided with a telescopic boom having a rotating cutter at a lower end. In a dredging method performed using a submerged walking dredger, the fixed beam and the moving beam are driven by remote control to cause the dredger to walk in the water,
Then, while the transverse saddle is running on the transverse beam, the extensible beam is controlled by controlling the extendable beam to excavate the water bottom in front, back, left and right by a rotary cutter provided at the lower end of the boom. A submersible walking dredging method characterized in that the water bottom is dredged by carrying out. 2. Adjustable support legs for each fixed beam and movable beam are automatically mounted by remote control on the head of a previously driven pile when the dredge machine walks underwater. The underwater walking dredging method according to claim 1, wherein the dredging machine is caused to walk in the water while being dripped. 3. A pair of fixed beams is rotatably mounted on the horizontal beam, and another pair of moving beams is disposed so as to be movable in the front-rear direction, and can be adjusted up and down before and after each fixed beam and the moving beam. A movable saddle is provided on the lateral beam, a telescopic beam adjustable in the front-rear direction is disposed on the lateral saddle, and a rotary cutter is provided at a lower end of the telescopic beam. An underwater walking dredging machine characterized by having a telescopic boom provided. 4. Among the vertically adjustable support legs provided before and after each fixed beam and movable beam, the front support leg is movable in the front and rear and left and right directions with respect to the beam, and the rear support leg is The underwater walking dredging machine according to claim 3, wherein the dredging machine is mounted so as to be movable in the front-rear direction.