JP2716048B2 - Ground improvement equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ground improvement apparatus for strengthening the ground by injecting a treatment liquid into the ground.

[0002]

2. Description of the Related Art This type of ground improvement apparatus includes a boring machine (hereinafter simply referred to as a machine) for supplying a processing liquid into the ground, a storage device for storing raw materials of the processing liquid, and a storage device for storing the raw material of the processing liquid. The apparatus has a manufacturing apparatus for manufacturing a processing liquid using raw materials, a storage apparatus for temporarily storing the processing liquid manufactured by the manufacturing apparatus, and a supply apparatus for supplying the processing liquid from the storage apparatus to the machine.

Conventionally, in this type of ground improvement device,
In accordance with the state of consumption of the processing liquid by the machine, an operator operates the manufacturing apparatus at an appropriate time to replenish the storage apparatus with the processing liquid.

[0004]

That is, in such a conventional ground improvement apparatus, an operator checks the progress of the ground improvement work, and timely operates the manufacturing apparatus according to the consumption of the processing liquid. It was necessary to operate.

[0005] By the way, in the ground improvement work using such a ground improvement device, labor saving is required as in the case of general industry.

The present invention has been made on the basis of such a background, and as described above, the operation of the processing liquid manufacturing apparatus which should be performed by the operator in a timely manner is automated, and the labor for ground improvement work is further reduced. The purpose is to do so.

[0007]

In order to achieve the above object, according to the first aspect of the present invention, there is provided a boring machine for supplying a processing liquid into the ground, a storage device for storing a raw material of the processing liquid, and the storage device. A manufacturing apparatus that manufactures a processing liquid using the raw materials stored in the apparatus, a storage apparatus that temporarily stores the processing liquid manufactured by the manufacturing apparatus, and a supply apparatus that supplies the processing liquid from the storage apparatus to the boring machine And the storage device, the manufacturing device, and the storage device.
A first controller for electrically controlling the device;
A second controller for electrically controlling the feeding device;
Third control for electrically controlling the boring machine
And from the storage device to the manufacturing device.
Material supply control means for intermittently controlling the supply of the material,
Detecting means for detecting the amount of the processing liquid stored in the storage device;
And the remaining amount of the processing liquid in the storage device is set in advance.
When the amount becomes equal to or less than the predetermined amount, a signal from the detection unit is used.
The first controller controls the raw material supply control means.
Operate to supply the raw material from the storage device to the manufacturing device.
Supply and drive of the manufacturing equipment.
Further, the third controller is connected to the first and second controllers.
Electrically connected to the controller, this third control
Controller to operate the first and second controllers.
Enabled by the third controller and the third controller
Operation of the raw material supply control means via the first controller
Is made possible.

[0008]

According to the first aspect of the present invention, in this type of ground improvement apparatus, the raw material supply control means for intermittently controlling the supply of the raw material from the storage apparatus to the manufacturing apparatus, and the raw material stored in the storage apparatus. Detecting means for detecting the amount of the processing liquid, and when the remaining amount of the processing liquid in the storage device reaches a predetermined amount, a signal from the detecting means causes the material supply control means to operate. Since the supply of the raw material from the storage device to the manufacturing device is performed and the manufacturing device is driven, the predetermined amount is set to an appropriate amount in advance in accordance with the ground improvement work, whereby the processing in the storage device is performed. liquid automatically processing solution Ru can be reliably replenished into the reservoir device from the manufacturing apparatus before the timely eliminates the.

[0009] Therefore, in this ground improvement device, as in the prior art, workers for operating the manufacturing device are required.
If necessary, the processing liquid is replenished to the storage device
Continue supplying the processing liquid from the feeder to the boring machine
Can be And often there are workers
From the third controller near the boring machine
Operation of the raw material supply means via the first controller;
Operation, so replenish the processing solution to the storage device.
It is also possible for the operator to operate as appropriate,
Can be carefully adjusted according to the situation.
You.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to an embodiment shown in the drawings.

In the drawings, S indicates a ground improvement device,
Although the ground improvement apparatus S of this embodiment injects cement milk into the ground G as a processing liquid, other processing liquid such as bentonite milk may be used.

Cement milk as a processing liquid is produced by mixing appropriate amounts of cement, admixture and water as raw materials.

The ground improvement apparatus S has a cement silo 1 for storing cement, which is a raw material of cement milk, an admixture tank 2 for storing an admixture, and a water tank 3 for storing water. The cement silo 1, the admixture tank 2 and the water tank 3 correspond to a storage device according to the present invention.

The cement silo 1 is provided with a cement conveying path 1a reaching the mixer 4, and the cement stored in the cement silo 1 is supplied to the mixer 4 by a screw conveyor. A cement valve 1b that is driven to open and close is installed at an end of the path 1a on the mixer 4 side.

The admixture tank 2 is provided with a conveying line 2a leading to the mixer 4, and the admixture is supplied by a gear pump 5. The end of the conveying line 2a on the mixer 4 side. Is provided with an admixture valve 2b that is driven to open and close.

Further, the water tank 3 is provided with a pipe 3a extending from the submersible pump 6, and this pipe 3a is connected to the mixer 4 via a water valve 3b which is driven to open and close.

The cement valve 1b, admixture valve 2b, and water valve 3b are driven to open and close by compressed air from a compressor 7, which will be described later, and correspond to the raw material supply control means of the present invention.

The mixer 4 has a load cell 8, and the cement valve 1b, the admixture valve 2b, and the water valve 3
These raw materials supplied to the mixer 4 via b can be respectively measured.

In the mixer 4, the respective raw materials are supplied to the mixer 4 in a required amount by appropriately opening and closing the cement valve 1 b, the admixture valve 2 b, and the water valve 3 b as described later. These are stirred for a predetermined time by a stirring blade driven by an electric motor to produce cement milk as a treatment liquid, which corresponds to the production apparatus of the present invention.

The cement milk thus produced is supplied to an agitator 11 corresponding to the storage device of the present invention from a discharge port 4a formed at the bottom of the mixer 4 via a valve 4b.

The agitator 11 temporarily stores cement milk as a processing liquid therein. The agitator 11 is provided with a level sensor 12 as a detecting means for detecting the amount of the stored cement milk. And
When the remaining amount of cement milk in the agitator becomes equal to or less than a predetermined amount, an electric signal is issued.

Then, at the bottom of the agitator 11,
A supply hose 16 is connected to a swivel joint 15 of a machine 14 via a valve 13 that is opened and closed, and a flow meter 17 and a high-pressure pump 18 are installed on the supply hose 16 to constitute a supply device. .

The valve 13 is a three-way valve, to which a pipe 23 from the water tank 3 is connected so that the water in the water tank 3 is supplied by the suction force of the high-pressure pump 18. Has become. The valve 13 is also switched by compressed air supplied by an air hose from the compressor 7.

The cement milk temporarily stored in the agitator 11 is supplied to the agitator 11 by the valve 13.
And the machine 14 side, the high-pressure pump 18
Is supplied from the end of the double pipe rod 21 of the machine 14 through the swivel joint 15 and is supplied into the ground G from the tip monitor 22 attached to the lower end of the double pipe rod 21.

Compressed air from the compressor 7 is supplied to the swivel joint 15 through an air pipe 25 having an air valve 24. Compressed air is ejected from the monitor 22.

When the valve 13 connects the submersible pump 6 and the machine 14, the water in the water tank 3 can be supplied to the ground G from the tip monitor 22 via the pipe 23 and the like.

Therefore, the tip monitor 22 held by the double-pipe rod 21 that rotates up and down while rotating by the machine 14 ejects water and compressed air in the drilling operation step, and cements out the cement in the formation operation step. The required ground improvement work can be performed by ejecting milk and compressed air.

The ground improvement apparatus S configured as described above includes:
First operation panel 31, second operation panel 32, and relay operation panel 33
And a central control panel 34 to control the whole. In the drawings, broken lines indicate signal lines connecting between operation panels or between an operation panel and an object controlled by the operation panel.

The first operation panel 31 is responsible for controlling the storage device and the manufacturing device, and corresponds to the first controller of the present invention.

The second operation panel 32 controls the intermittent operation of the high-pressure pump 18 as a supply device, receives a flow signal from the flow meter 17, receives a flow signal from the
, And corresponds to the second controller of the present invention.

In this embodiment, both the first and second operation panels 31 and 32 are electrically connected to a centralized operation panel 34 via a relay operation panel 33. The board 34 corresponds to a third controller of the present invention.

The centralized operation panel 34 mainly controls the machine 14 electrically, but is electrically connected to the first and second operation panels 31 and 32 as described above. By operating various switches of the centralized operation panel 34, the control target by the first and second operation panels 31 and 32 can be operated, and through this, the entire ground improvement apparatus S can be controlled intensively. Can be.

The control modes of the soil improvement device S by the control device 35 include a manual mode in which the above-described respective devices can be manually operated and a fully automatic mode in which almost all operations are automatically performed. The selection can be made by operating a changeover switch (not shown) provided on the first operation panel 31.

The production of the processing solution in the fully automatic mode of the ground improvement apparatus S of this embodiment is as follows.

At the start of the ground improvement work, necessary preparation work is performed.

In this preparation work, the ground improvement device S
And setting of the supply amounts of cement, admixture, and water to be supplied to the mixer 4 at a time in the fully automatic mode. Thereafter, the switch is set to the fully automatic mode, and the start switch is pressed.

As a result, the ground improvement apparatus S automatically performs a predetermined start-up operation according to the operation of the processing liquid manufacturing process described later, and after the predetermined amount of cement milk is stored in the agitator 11, The high-pressure pump 18 controlled by a signal from the second operation panel 32 is driven to supply the processing liquid to the machine 14 via the supply hose 16, and the operation of the machine 14 is started by a signal from the central operation panel 34.

When the operation of the machine 14 in such a state consumes the cement milk, the cement milk in the agitator 11 decreases, and when the level sensor 12 detects that the remaining amount is a predetermined amount, the electric power is consumed. A signal is issued, and the first operation panel 31 automatically starts the following processing liquid manufacturing process.

That is, the water valve 3b is opened by the signal from the level sensor 12, and the water is supplied to the mixer 4 by the submersible pump 6. Since the amount of water supplied to the mixer 4 is measured by the load cell 8, when the amount of supplied water reaches a predetermined amount, the water valve 3b is closed and the supply of water is stopped.

At the same time, the rotational drive of the stirring blade of the mixer 4 is started, and the cement valve 2b and the admixture valve 3
b are sequentially opened and the cement and the admixture are mixed with the mixer 4
Supplied to In this case, a predetermined amount of each of the cement and the admixture is supplied to the mixer 4 by the load cell 8 similarly to the water.

The rotation of the stirring blade is continued until the valve 4b of the mixer 4 is opened. The time until the valve 4b is opened is set to be longer than the stirring and mixing time for producing cement milk in the mixer 4.

Then, when the remaining amount of the cement milk in the agitator 11 further decreases and reaches a predetermined remaining amount, an electric signal to that effect is issued from the level sensor 12, and based on this signal, When the rotation of the stirring blade is stopped, a signal to be opened to the valve 4b is issued from the first operation panel 31, the valve 4b is opened, and the mixture is discharged from the mixer 4 through the discharge port 4a into a predetermined mixture. The produced cement milk is replenished to the agitator 11.

As a result, the remaining amount of cement milk temporarily stored in the agitator 11 is greatly increased,
The use of the machine 14 can be continued as it is.

In the fully automatic mode, such a series of processing liquid manufacturing steps are repeatedly and automatically performed.

That is, in this embodiment, the agitator 1
The production is automatically started in a timely manner in accordance with the remaining amount of cement milk in 1, and the production process is performed automatically, and the agitator 11 is replenished at an appropriate time. There is no shortage of the processing solution even if it is not involved in the related work.

Therefore, in the ground improvement apparatus S, the labor saving of the ground improvement work is further promoted as compared with the conventional one, and in the ground improvement work by the ground improvement apparatus S of this embodiment, the concentrated operation is performed. It is also possible for the worker 41 who operates the board 34 and the worker 41 who operates the machine 14 to work together.

At the end of the operation, for example, the full automatic mode is set to the manual mode to stop the automatic replenishment function of the processing liquid, and the cement milk in the agitator 11 is stopped at a required time. It is necessary to eliminate the remaining amount.

In such a case, even if the changeover switch for setting the fully automatic mode to the manual mode is installed on the first operation panel 31 which is installed at a position separated from the boring machine 14, the worker 41 can be operated. The remote control can be performed by operating the switch from the centralized operation panel 34 which is often installed near the boring machine 14, so that the operation is more efficient.

The switches that can be operated from the centralized operation panel 34 by operating the switches on the centralized operation panel 34 are not limited to the above-described switch between the fully automatic mode and the manual mode.
Not only various switches such as the start switch, but also various valves such as a raw material supply control means such as a cement valve 1b or various actuators such as a drive motor of the mixer 4 may be used. The same applies to the control target of.

[0050]

As described above, according to the first aspect of the present invention, in this type of ground improvement apparatus, there is provided a raw material supply control means for intermittently controlling the supply of the raw material from the storage apparatus to the manufacturing apparatus. Detecting means for detecting the amount of the processing liquid stored in the storage device, and when the remaining amount of the processing liquid in the storage device has reached a predetermined amount, a signal from the detection means, Since the raw material supply control means is operated to supply the raw material from the storage device to the manufacturing device, and the manufacturing device is driven, the predetermined amount is appropriately set in advance in accordance with the ground improvement work. Accordingly, Ru can be reliably replenished automatically processing liquid to the reservoir device from the manufacturing apparatus in time before the processing solution in the reservoir apparatus is eliminated.

Therefore, in this ground improvement apparatus, a worker for operating the manufacturing apparatus as in the prior art is required.
If necessary, the processing liquid is replenished to the storage device
Continue supplying the processing liquid from the feeder to the boring machine
Can be And often there are workers
From the third controller near the boring machine
Operation of the raw material supply means via the first controller;
Operation, so replenish the processing solution to the storage device.
It is also possible for the operator to operate as appropriate,
Can be carefully adjusted according to the situation.
You.

[Brief description of the drawings]

FIG. 1 is an overall explanatory diagram of a ground improvement device of an embodiment.

[Explanation of symbols]

 S Ground improvement device G Ground 1 Cement silo 1b Cement valve 2 Admixture tank 2b Admixture valve 3 Water tank 3b Water valve 4 Mixer 11 Agitator 12 Level sensor 14 Boring machine 18 High pressure pump 31 First operation panel 32 Second operation Panel 34 Centralized operation panel

Claims (1)

(57) [Claims] 1. A boring machine for supplying a processing liquid into the ground, a storage device for storing a raw material of the processing liquid, a manufacturing apparatus for manufacturing a processing liquid using the raw material stored in the storage device, In a ground improvement device having a storage device for temporarily storing a processing liquid manufactured by the device and a supply device for supplying the processing liquid from the storage device to the boring machine, the storage device, the manufacturing device, and the storage device are electrically connected. Control
A first controller that controls the supply device.
A second controller controlling the boring machine
With a third controller that controls electrically
The intermittent system the supply of the raw material to the manufacturing apparatus from the storage device
Raw material supply control means for controlling the
Detecting means for detecting the amount of the processing liquid, wherein the remaining amount of the processing liquid in the storage device is equal to or less than a predetermined amount.
When it is below, by the signal from the detection means,
The first controller operates the raw material supply control means.
Supply of the raw materials from the storage device to the manufacturing device
The manufacturing apparatus is driven, and further, the third controller is connected to the first and second controllers.
Electrically connected to this third controller.
Operation of the first and second controllers by rollers
And the third controller allows the
Operation of the raw material supply control means via a first controller
A ground improvement device characterized by the ability to work.