JPS60138128A - Excavator for bottom of water - Google Patents

Abstract

PURPOSE:To prevent the pollution of river by a method in which a hole is provided in the center of a hull, the lower part of a sheathing frame is pushed into the bottom ground of the water through the hole, and the bottom ground of the water is excavated under the condition that water is isolated. CONSTITUTION:A hole 2 is provided in the center of the hull, and a working base 3 is provided in the hole 2 in a vertically movable manner. A hole 4 through which a sheathing frame is vertically moved is provided in the base 3. The sheathing frame is provided in the hole 4 in a vertically movable manner, a working base holder 6 to vertically operate the base 3 is provided to the hull 1, and a sheathing frame elevator 23 to push the lower part of the sheathing frame into the bottom ground of the water while vertically operating the frame is provided to the base 3. An excavator A is provided to the upside of base 3, and a water supply and discharge device is provided to the hull 1. Since the bottom ground is excavated by pushing the lower part of the sheathing frame into the bottom ground and discharging water in the frame, the excavation of the bottom ground of the water can be made under the condition that water is isolated to prevent the pollution of river water.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device for excavating and transporting earth, sand, and soft soil at the bottom of a water body without polluting the water.

During dredging work for rivers, lakes, and marshes, water pollution caused by excavating sediment and sludge from riverbeds has become a major problem.

The present invention was developed in view of the above circumstances, and its purpose is to make it possible to excavate the underwater ground without removing live fish from rivers, and also to eliminate the need for dewatering the earth and sand after excavation. An object of the present invention is to provide an economical underwater excavation device that eliminates the need for dewatering treatment equipment.The present invention will be explained below with reference to the drawings. In the drawing, reference numeral 1 denotes a hull, and a hole 2 is formed in the center of the hull 1, and a workbench 3 is provided in the hole 2 so as to be movable up and down.
These constitute the water surface moving body B.

This workbench 3 allows water to be put in and taken out, and the sinking can be adjusted. Guide blocks 5 are fixedly installed on the left and right sides of the front and rear surfaces of the workbench 3.

A pair of left and right work platform elevating and lowering holding devices 6 are provided at the front and rear of the upper surface of the hull 1. The work platform lifting/lowering holding device 6 is equipped with a bracket door fixed to the upper surface of the hull 1, and the bracket 7 has an i! : The end portion is attached with a pin 9, and a presser portion 10 is formed at the lower end of the presser arm 8.

An actuating cylinder 11 is attached to the hull 1 by a pin 2, and a rond I3 of the actuating cylinder 11 is connected to an intermediate portion of the presser arm ε by a pin 14. Presser arm 8
A leg body 16 is connected to the tip of the guide block 5 through a joint 15.
A stopper IB is attached to the lower end of the leg I6 passing through the guide hole 17 of the leg I6.

An excavator 19 as an excavation crack 4 is mounted on the front and rear sides of the upper surface of the workbench 3.A hole 4 for raising and lowering the earth retaining frame is formed in the center of the work table 3; 4 is equipped with a retaining frame 20 that can be raised and lowered. The retaining frame 20 has connection brackets 21 fixedly installed at the four corners of the upper end.

A cutting edge 22 is formed at the lower edge of the retaining frame 20. The retaining frame 20 is lifted and lowered by a retaining frame lifting device 23 provided on the workbench 3. This retaining frame lifting device 23 has upper and lower cylinders 26 and 27 whose cylinder bodies are connected to each other. The upper cylinder 260 Rondo 28 is connected to the connecting bracket 21 of the retaining frame 20 with a pin 29, and the lower cylinder 27
The rond 30 is a connecting bracket 31 at the bottom of the workbench 3.
Connect with pin 32 to
is a generator, 36 is a water pump of water supply and drainage system C, and 37 is a ship steering winch.

Next, 1 operation will be explained.O To start excavation, set the underwater excavation device to the negative digging position. This setting is carried out by winding in a wire from an anchor provided elsewhere using the ship steering winch 37, and using the tensile force of the wire.

When the positioning is completed, the actuating cylinder 11 of the work platform lifting/lowering holding device 6 is retracted, the presser arm 8 is lowered, the legs 16 are lowered, and the stoppers 18 of the legs 16 are brought into contact with the bottom G and L of the water. At this time.

Water is poured into the workbench 3 by the water pump 36, causing the workbench 3 to sink, and the presser arm 8 presses down the workbench 3 from above, causing the workbench 3 to descend and land on the water bottoms G and L. The operating cylinder 11 is fixed with the work table 3 in contact with the water bottom G and L, and the work table 3 is fixed with the presser arm 8.

Next, the upper and lower cylinders 26 and 27 of the retaining frame lifting device W23
The earth retaining frame 20 is lowered by reducing the earth retaining frame 20, and the lower part of the earth retaining frame 20 is pushed into the ground at the water bottom G and L. 0 When the earth retaining frame 20 is pushed in, the presser arm 8 is moved to the work platform 3.
Since it is fixed, the amount of N from not only the workbench 3 but also the hull 1 is applied to the retaining frame 20, and the pushing is easily performed.

The pushing depth of the retaining frame 20 is the excavation depth B and the ten root cutting depth h.

When the retaining frame 20 is pushed to a predetermined depth.

Water in the retaining frame 20 is removed by a water bonder 36.

Next, the excavator I9 is operated and the packet 38 is used to excavate to the excavation depth H. When this excavation is completed, the water pump 36 is used again to pump up the river water and the river water level W, L is created in the retaining frame 20. Pour water to the same height ◇ Next, lift the retaining frame f! 123 upper and lower cylinders 26.
27 is extended to raise the retaining frame 20, and the operating cylinder 11 of the work platform lifting/lowering holding device 6 is extended to raise the presser arm 8, the one-leg body 16 is raised, and the stopper 18 is used to raise the guide block 5. Raise the lifting work platform 3. At this time, the water in the workbench 3 is drained.

In the case of excavating soft ground, the earth retaining frame 20 is inserted in a trench at a predetermined depth and the water is drained, then a stabilizing agent is added and stirred by the packet 38 of the excavator 19 to improve the ground and then excavation is performed to eliminate the water. This also makes it easier to dewater and transport excavated soil.

Note that the shape of the earth retaining frame 20 is limited to a rectangular shape, but may be a polygon with one circular shape, and the number of earth retaining frames 20 is not limited to one piece, but can be placed on the workbench 3.
You may equip more than one.

As described in detail above, the present invention provides a thank-you note part 2 in the center of the hull 1, a workbench 3 is provided in the thank-you note part 2 so as to be movable up and down, and a hole 4 for raising and lowering the retaining frame is provided in the workbench 3. A retaining frame 20 is provided in the retaining frame lifting hole 4 so as to be movable up and down, and a work platform lifting/lowering holding device 6 for operating the lifting/lowering movement of the work platform 3 is provided in the hull 1.

Operate the lifting and lowering movement of the earth retaining frame 20 on the workbench 3, and
Underwater excavation with four features: a retaining frame lifting device 23 that lowers the retaining frame 20 and pushes the lower part of the retaining frame 20 into the underwater ground; an excavation device &l is installed on one workbench 3; and a water supply and drainage system C is installed on the hull 1. It is a device.

Therefore, the work platform 3 is lowered by the operation of the work platform 1 lifting/lowering holding device C, and this work platform 3 is installed on the water bottom, and the earth retaining frame lifting device 2
3 to lower the earth retaining frame 20 and push the lower part of the earth retaining frame 20 into the water bottom ground, and the earth retaining frame 2 is lowered by the water supply and drainage device C.
It is possible to remove the water in the water and excavate the underwater ground using the excavator l. Since the excavation of this underwater ground is done in a state isolated from the water, it does not pollute the river, and it is also economical because dewatering of the earth and sand after excavation is not necessary, and dewatering treatment equipment can be eliminated. become a target.

[Brief explanation of drawings]

Fig. 1 is a plan view of an underwater excavation device according to an embodiment of the present invention;
The figure is a side view with the same part cut away, FIG. 3 is a front view with the same part cut away, FIG. 4 is an explanatory diagram of the excavation work, and FIG. 5 is an explanatory diagram of the retaining frame during the excavation work. 1 is a hull, 3 is a workbench, 6 is a workbench lifting/lowering holding device, 20
is earth retaining frame, 23 is earth retaining frame lifting bag N. After A is excavated, W1C is the water supply and drainage system. Applicant: Chubu Regional Construction Bureau, Ministry of Construction; Agent: Komatsu Construction Industry Co., Ltd. Patent attorney: Masaaki Yonehara Patent attorney: Tadashi Hamamoto

Claims (1)

[Claims] A hole-shaped part 2 is provided in the center of the hull 1, and a work platform 3 is provided in the hole-shaped part 2 so as to be movable up and down.
In addition, the earth retaining frame 20 is provided in the earth retaining frame lifting hole 4 so as to be movable up and down, and the hull 1 is provided with a work platform elevating and lowering holding device 6 that operates the lifting and lowering movement of the work platform 3. A hole 23 for raising and lowering the earth retaining frame 20 is provided to operate the movement and lower the earth retaining frame 20 to push the lower part of the earth retaining frame 20 into the water bottom ground.A drilling device l is installed on the work platform 3, and a water supply and drainage system wC is installed on the hull 1.
1. It is characterized by having a bottom drilling device.