JP3677435B2 - Sediment modifier supply device for sediment modifier - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention excavates by excavation such as excavation earth and sand when excavating the road surface for embedding or repairing pipes such as water and sewage and gas, electricity and telephone etc., and excavation earth and sand at the time of tunnel construction. Sediment modifiers for landslide reformers that add lime, cement, or other sediment modifiers to the excavated sediments, stir them to modify the excavated sediments, and produce improved soil for use as backfill materials again The present invention relates to a supply device.
[0002]
[Prior art]
Excavation earth and sand, etc. that come out when excavating road surfaces etc. for embedding or repairing pipes such as water and sewage, gas, etc., which are conventionally called construction residual soil, etc. A large amount of construction waste is generated. Conventionally, these construction surplus soils have been processed by being transported and buried in mountainous areas near the work site or relatively close seaside.
[0003]
However, it has become difficult in recent years to secure a suitable site for landfill, and the cost required to transport the construction surplus soil to a distant place also requires a large amount of money. However, due to environmental restrictions on landfills, it is difficult to simply transport the construction surplus soil to the mountains and the seaside as before.
[0004]
It is only necessary that the construction surplus soil can be landfilled on-site at the excavation work site, but once construction has been excavated, gravel, sludge, asphalt fragments, rock fragments, concrete fragments, etc. are mixed, In addition, when used as a backfill material, the particle size of the soil is uneven and the cohesion between the soil particles is degraded, and even if this is reused as the reclaimed soil for excavation grooves in the roadbed, It is difficult to obtain the necessary support force.
[0005]
For this reason, since excavated sediment generated at the work site cannot be used as it is for reclaimed land, high-quality sediment required for landfill is newly purchased and carried and used as reclaimed soil.
[0006]
However, if the excavated sediment generated as excavated soil after construction is simply discarded, it is just a waste, but it can be effectively reused as material (backfill soil) by reforming it. can do. As the apparatus, various soil quality improvement apparatuses for modifying excavated sediment by adding sediment modifiers such as lime and cement to the excavated sediment are known.
[0007]
And the conventional soil improvement apparatus is comprised from the sieve apparatus 1, the earth and sand modifier supply apparatus 4, and the mixing stirring apparatus 3 as FIG. Furthermore, a belt conveyor 2 for conveying and supplying the excavated earth and sand below the fixed size by the sieving device 1 to the mixing and stirring device 3 is disposed. An earth and sand modifier supply device 4 for supplying and supplying an earth and sand modifier such as cement is provided. In the lower part of the mixing and agitating device 3, the modified soil discharged again as a material after mixing and stirring the excavated sediment and the sediment modifying material is discharged onto the belt conveyor 5 and conveyed to the stock yard 6. It is used as landfill for reclaimed land that has been reformed and regenerated.
[0008]
Then, the earth and sand modifier supply device 4 that supplies and supplies the earth and sand modifier to the mixing and agitating device 3 of the conventional earth and sand reformer is provided with a sand and sand improvement material in the peripheral wall portion 7 and the earth and sand modifier discharge portion 8 of the peripheral wall portion 7. A chute 10 for discharging the material is provided, and an upper part of the peripheral wall 7 is provided with an earth and sand modifier supply port 9 through which an earth and sand modifier is supplied.
[0009]
The chute 10 provided in the earth and sand modifier supply unit 8 of the earth and sand modifier supply device 4 is provided with a screw conveyor 12 that discharges the earth and sand modifier. Agitating screw conveyor 11 for agitating the sediment modifier supplied to the sediment modifier 4 is provided near the modifier discharger 8. The two screw conveyors 12 and the stirring screw conveyor 11 are rotationally driven by rotational drive motors 14 and 13.
[0010]
A shutter device 15 is provided between the two screw conveyors 12 and the agitating screw conveyor 11, and the earth and sand are removed from the chute 10 provided in the earth and sand modifier discharging unit 8 by opening and closing the shutter device 15. The modifying material can be sent to the mixing and stirring device 3 or stopped.
[0011]
[Problems to be solved by the invention]
However, when the earth and sand modifier is supplied from the upper earth and sand modifier supply port 9 to the conventional earth and sand modifier supply device 4, the earth and sand modifier discharge unit 8 of the earth and sand modifier supply device 4 is used as the chute 10. Therefore, even when the screw conveyor 12 to be discharged is operated, a so-called bridge phenomenon is generated above the screw conveyor 12 to form a hollow portion above the screw conveyor 12, and the earth and sand modifier is generated from the chute 10. Cannot be supplied to the mixing and stirring device 3. Then, the amount of earth and sand modifier necessary for the reforming is not added to the excavated earth and sand to be reformed, and performance that can be reused as backfill soil cannot be exhibited.
[0012]
Further, the earth and sand modifier is fed from the chute 10 of the earth and sand modifier supply device 4 by the discharging screw conveyor 12, and is supplied and stopped by a shutter device 15 provided above the discharging screw conveyor 12. Although the discharging screw conveyor 12 can adjust the feed amount of the earth and sand modifier supplied to the screw conveyor 12 according to the number of rotations, the amount of the earth and sand modifier supplied via the shutter device 15. Since the amount of feed by the screw conveyor 12 also changes, the amount of opening / closing of the shutter device 15 and the number of rotations of the screw conveyor 12 are determined when the supply amount of the earth and sand modifier to the mixing and stirring device 3 is adjusted. It was necessary to adjust both, and it was practically difficult to finely adjust the supply amount.
[0013]
Therefore, the present invention has been made in accordance with the above-described problem, and an electromagnetic solenoid vibrating feeder that operates downward-front-upper-rear by the frequency of the power supplied to the discharge port of the chute at the bottom of the sediment modifier supply device is provided. By installing it, the shutter device that was provided in the conventional sediment modifier supply device is unnecessary, and this electromagnetic solenoid vibration feeder can easily finely adjust the discharge amount of sediment modifier by adjusting the electromagnetic cycle, It is an object of the present invention to provide a sediment modifier supply device that can finely adjust the amount of the sediment modifier added depending on the state of the excavated sediment to be modified and the use of the improved soil. To do.
[0014]
Also, in order to mix and agitate the excavated sediment and the sediment modifier in the interior of the sediment modifier supply device, an agitating blade provided with an eccentric weight that adds vibration to the rotary shaft by the rotation of the rotary shaft is provided at one end. Since the screw conveyor for stirring is provided, vibration is added to the rotating shaft with stirring blades to stimulate the sediment modifier so that the sediment modifier can be discharged smoothly without interruption due to the bridge phenomenon. An object of the present invention is to provide an earth and sand modifier supply device.
[0015]
[Means for Solving the Problems]
In order to achieve the above object, the invention according to claim 1 of the present invention is the earth and sand modifier supply device of the earth and sand reformer, wherein the modifier is supplied to the outlet of the bottom of the earth and sand modifier supply device. As an amount adjusting means , an electromagnetic solenoid vibration feeder that operates downward-front-upward-rearward according to the frequency of a power supply to be supplied is provided, and the amount of power supplied to the electromagnetic solenoid of the electromagnetic solenoid vibration feeder is adjusted to adjust the power supply. Thus, it is possible to adjust the supply amount of the sediment modifier from the discharge port.
[0016]
Further, in order to achieve the above object, the invention according to claim 2 of the present invention is provided with a stirring blade in the earth and sand modifier supply device for stirring the introduced earth and sand modifier. A rotating shaft is provided to be driven to rotate by a motor, and an eccentric weight that adds vibration to the rotating shaft by rotation of the rotating shaft is provided at one end of the stirring blade.
[0017]
DETAILED DESCRIPTION OF THE INVENTION
DESCRIPTION OF EMBODIMENTS Hereinafter, an embodiment of a sediment modifier supply device of a sediment modifier of the present invention will be described with reference to the drawings. FIG. 1 is a schematic longitudinal sectional view of the earth and sand modifier supply device of the present invention, FIG. 2 is an enlarged sectional view of a chute discharge port of the earth and sand modifier supply device of the present invention, and FIGS. It is an operation state figure of the electromagnetic solenoid vibration feeder provided in the chute discharge opening of 2.
[0018]
The entire earth and sand reforming apparatus of the present invention will be described. Like the conventional earth and sand reforming apparatus described above with reference to FIG. 6, the earth and sand reforming apparatus of the present invention includes a sieve device 1, an earth and sand reforming material supply device 4, and It consists of a mixing and stirring device 3. Further, the excavated sediment under the sieve that has been crushed by the crushing device of the sieving device 1 and reduced to a certain size or less by the sieving device from below the sieving device 1 to the mixing agitating device 3 A belt conveyor 2 for conveying and supplying is disposed, and in the lower part of the mixing and stirring device 3, the modified soil discharged again as a material obtained by mixing and stirring the excavated sediment and the soil modifying material is a belt conveyor. 5 is discharged onto the stock yard, transported and accumulated in the stock yard 6, and reused as reclaimed landfill that has been modified and regenerated in excavation grooves such as roadbeds.
[0019]
Next, the earth and sand modifier supply device of the earth and sand reformer of the present invention will be described with reference to FIGS. 1, 2, 3, 4 and 5. Reference numeral 4 is an earth and sand modifier supply device, and the upper part and the lower part are opened. The lower opening is formed in a square tube shape or a cylindrical shape that is constricted in a weight shape, and the upper opening portion of the peripheral wall portion 7 that forms the rectangular tube shape or the cylindrical tube body is earth and sand to which the earth and sand modifier is supplied. The reformer supply port 9 is formed, and the lower opening portion forms a sediment modifier discharge portion 8 from which the sediment modifier is discharged. A rotating shaft 16 having a curved arm-shaped stirring blade spanned in the width direction of the cylindrical peripheral wall portion 7 is provided at the upper portion of the earth and sand modifier discharge portion 8, and one end of this stirring blade is provided. The part is provided with an eccentric weight 18 for adding vibration to the rotary shaft by the rotation of the rotary shaft , and the rotary shaft 16 is rotationally driven by a motor 17.
[0020]
On the other hand, an electromagnetic solenoid vibration feeder 20 is attached to the earth / sand modifier discharging unit 8 of the earth / sand modifier supply device 4 so as to be in close contact with the opening edges 81 and 82 of the outlet 8. Reference numeral 19 denotes an electromagnetic solenoid unit that operates the electromagnetic solenoid vibration feeder unit 20.
[0021]
The electromagnetic solenoid vibration feeder portion 20 is configured by covering a core portion 22 with a covering rubber 21, and the core portion 22 of the electromagnetic solenoid vibration feeder portion 20 is attached to the electromagnetic solenoid portion 19 via an arm member 23. . When the power to the electromagnetic solenoid unit 19 is off, the electromagnetic solenoid vibratory feeder unit 20 is in close contact with the opening edges 81 and 82 of the sediment modifier discharging unit 8 of the sediment modifier supplying device 4, and the discharge unit 8. The outlet is closed.
[0022]
Next, when the power is turned on, the electromagnetic solenoid unit 19 is actuated, and the electromagnetic solenoid vibration feeder unit 20 is moved from the opening edge 82 of the sediment modifier 4 by the gap a by the arm member 23 of the electromagnetic solenoid unit 19. It is lowered downward (see the description in FIG. 3). The electromagnetic solenoid vibration feeder 20 is pushed forward by the gap b while being lowered downward by the gap a. At this time, the earth and sand modifier on the electromagnetic solenoid vibration feeder 20 is the gap. a is discharged (see the description of FIG. 4). Further, the electromagnetic solenoid vibration feeder unit 20 is raised upward by the gap a and is in close contact with the opening edge portion 82 of the sediment modifier supply device 4 (see the description of FIG. 5). The outlet is closed, and then the electromagnetic solenoid vibration feeder 20 is pulled backward by the gap b to return to the state shown in FIG.
[0023]
Then, the soil modifying material is discharged from the gap a while repeating such a cycle at a high speed. The vibration cycle of the electromagnetic solenoid vibration feeder unit 20 can be obtained by adjusting the frequency of the power supply to the electromagnetic solenoid unit 19 in an adjustable manner.
[0024]
Next, the function of the earth and sand modifier supply device 4 of the present invention will be described. The rotating shaft 16 provided with the stirring blades is driven to rotate by the motor 17, and the earth and sand modifier is supplied by the rotation of the stirring blades of the rotating shaft 16. An eccentric weight that agitates the earth-and-sand modifier contained in the apparatus 4 but adds vibration to the rotating shaft by rotation of the rotating shaft at one end of the stirring blade of the rotating shaft 16 provided with the stirring blade. 18 is provided, the rotating shaft 16 provided with the stirring blades rotates with a large amplitude width as compared with the case where the eccentric weight 18 is not provided, and the earth and sand modifier supply device 4 The earth-and-sand modifying material accommodated inside can be agitated, and the earth-and-sand modifying material can be sent downward without causing a bridge phenomenon inside the earth-and-sand modifying material supply device 4.
[0025]
In addition, the eccentric vibration of the rotary shaft 16 provided with the stirring blade is transmitted to the peripheral wall portion 7 of the earth and sand modifier supply device 4, and vibration is added to the entire earth and sand modifier supply apparatus 4, so that the earth and sand modifier is added. The supply device 4 is shaken, and the sediment modifier inside the sediment modifier 4 is further promoted to feed downward.
[0026]
The earth and sand modifier sent to the discharge port of the earth and sand modifier discharge unit 8 of the earth and sand modifier supply device 4 is mixed and agitated by the electromagnetic solenoid vibration feeder 20 that closes the outlet. The electromagnetic solenoid vibration feeder 20 is activated by supplying power to the electromagnetic solenoid 19 of the electromagnetic solenoid vibration feeder 20 that closes the discharge port, and this electromagnetic solenoid vibration feeder According to the vibration cycle of the lower 20-the front-the upper-the rear, the sediment modifier is mixed and stirred from the gap a between the electromagnetic solenoid vibration feeder 20 and the opening edge 82 of the sediment modifier 4. 3 and mixed and stirred with the excavated earth and sand carried from the sieve device 1 by the mixing and stirring device 3.
[0027]
The amount of earth and sand modifier supplied from the earth and sand modifier 4 depends on the downward gap a and the forward gap b. This cycle depends on the frequency of the power supply to the electromagnetic solenoid 19. Therefore, by adjusting the frequency of the power source, the amount of the soil modifying material to be added can be finely adjusted in accordance with the state of the excavated soil to be modified and the use of the improved soil. In addition, since the electromagnetic solenoid vibration feeder is attached to the discharge port at the bottom of the earth and sand modifier supply apparatus, the shutter device provided in the conventional earth and sand modifier supply apparatus becomes unnecessary.
[0028]
【The invention's effect】
As described above, the earth and sand modifier supply device according to the present invention is an electromagnetic solenoid that operates in the downward-front-upper-rear direction according to the frequency of the power supplied to the discharge port of the chute at the bottom of the earth-and-sand modifier supply apparatus. A vibratory feeder is installed, and this electromagnetic solenoid vibratory feeder can easily fine-tune the discharge amount of the sediment modifier by adjusting the electromagnetic cycle. Thus, it is possible to finely adjust the added amount of the earth and sand modifying material to be added, and there is an effect that the shutter device provided in the conventional earth and sand modifying material supply apparatus can be eliminated.
[0029]
In addition, a rotary shaft provided with a stirring blade provided with an eccentric weight that adds vibration to the rotary shaft by rotation of the rotary shaft at one end is provided inside the earth and sand modifier supply device. This gives vibration to the sediment modifier supply device itself, stirs the sediment modifier contained in the sediment modifier supply device, and at the inside of the sediment modifier feed device 4 The effect that the earth and sand modifier can be sent downward without causing a bridge phenomenon can be obtained.
[Brief description of the drawings]
FIG. 1 is a schematic vertical sectional view of an apparatus for supplying earth and sand modifier according to the present invention,
FIG. 2 is an enlarged cross-sectional view of a chute outlet of the earth and sand modifier supply device of the present invention,
3 is an operational state diagram of an electromagnetic solenoid vibration feeder provided at the chute discharge port of FIG.
4 is an operational state diagram of an electromagnetic solenoid vibration feeder provided at the chute discharge port of FIG . 2 ;
5 is an operational state diagram of an electromagnetic solenoid vibration feeder provided at the chute discharge port of FIG.
FIG. 6 is a side view of the earth and sand reformer,
FIG. 7 is a schematic vertical sectional view of a conventional earth and sand modifier supply device.
[Explanation of symbols]
1 sieve device, 2 belt conveyor, 3 mixing and stirring device, 4 earth and sand modifier supply device,
5 belt conveyors, 6 stock yards, 7 peripheral walls, 8 earth and sand modifier discharger,
81 opening edge, 82 opening edge, 9 earth and sand modifier supply port, 10 chute,
11 Screw conveyor for stirring, 12 Screw conveyor, 13 Motor,
14 motor, 15 shutter device, 16 rotating shaft with stirring blade,
17 motor, 18 eccentric weight, 19 electromagnetic solenoid part,
20 Electromagnetic solenoid vibration feeder, 21 Cover rubber,
22 Core part of vibration feeder part, 23 Arm member.

Claims (2)

In the earth and sand modifier supply device of the earth and sand reformer, as a modifier supply amount adjusting means to the outlet of the bottom of the earth and sand modifier supply apparatus, depending on the frequency of the power supplied, lower-front-upper-rear Provided an electromagnetic solenoid vibration feeder that operates , and by adjusting the power supply amount applied to the electromagnetic solenoid of the electromagnetic solenoid vibration feeder, it is possible to adjust the supply amount of earth and sand modifier from the discharge port by supplying power Sediment reforming material supply device of the soil reforming device characterized. In order to agitate the introduced earth and sand modifier in the earth and sand modifier supply apparatus, a rotary shaft provided with a stirring blade is provided to be driven to rotate by a motor, and the one end of the stirring blade is provided with the above-mentioned The earth and sand modifier supply device of the earth and sand reformer according to claim 1, further comprising an eccentric weight that applies vibration to the rotating shaft by rotation of the rotating shaft .

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