JP2004059187A - Reformation soil supply device for soil reformation, and self-propelling soil reforming machine with the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a reformation soil supply device for soil reformation capable of stably supplying reformation soil in hard clay blocks. <P>SOLUTION: A carrying conveyor 6 is provided under a hopper 2 for charging the reformation soil, a discharge port 5 is provided at a discharge part at a lower part of the hopper 2, and close to it, a scraping mechanism 10 comprising a scraping rotor 11, a support member 16 supporting both end parts of the scraping rotor 11 to be rotatable, and a scraper device 20 provided on the support member 16 is provided in the hopper 2. In an outer circumferential part of a cylindrical member 12 of the scraping rotor 11, a plurality of projection members 13 and 14 having smaller width size than rotation direction size are provided at a prescribed interval in a plurality of lines in a rotation direction, with a gap provided circularly in the rotating direction. Scrapers 21 and 22 are provided to be engaged with the gap. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an improved soil supply device for soil improvement, and more particularly to an improved soil supply device for stably supplying highly viscous soil to be improved.
[0002]
[Prior art]
Conventionally, in civil engineering construction work, etc., it is possible to add a predetermined ratio of soil improvement material to soft and weak supporting soil that can not be used for backfilling after excavation and mix it to improve soil with strong supporting capacity. Is being done. In order to efficiently add a predetermined ratio of the soil improving material to the remaining soil (improved soil), a predetermined ratio of the soil improving material is continuously added while a constant amount of the soil to be improved is continuously supplied. The method has been taken.
[0003]
As a method for continuously supplying a fixed amount of the soil to be improved, there are methods disclosed in JP-A-9-195265 and JP-A-11-165878. FIG. 8 is a schematic view of the improved soil supply device 50 for soil improvement. In FIG. 8, a conveyor 6 for transporting the soil T to be improved in the direction of the arrow is provided below the hopper 2 into which the soil T to be improved is charged. A discharge port 5 for defining a cutting height H of the conveyed soil T to be conveyed is formed in a lower discharge portion of the hopper 2. In the hopper 2 near the discharge port 5, a scraping rotor 51 provided with a plurality of projecting members 52 on the outer peripheral portion of the tubular member 12 is provided, and the scraping rotor 51 is driven to rotate. Outside the discharge port 5, a soil improving material supply device 7 is disposed, and a shooter 8 of the shooter 8 is opened on the conveyor 6 to discharge a predetermined amount of the soil improving material.
[0004]
FIG. 9 is an exploded view of the tubular member 12 of the scraping rotor 51, showing the shape and arrangement of the protruding members 52. In FIG. 9, the width dimension M of the projection member 52 is set to be larger than the rotation direction dimension N, and in this example, the plate member is placed horizontally. A plurality of the protrusion members 52 are arranged and fixed in a staggered manner. Note that the arrow indicates the scraping direction.
[0005]
Next, the operation will be described. In FIG. 8, the soil T to be improved, which has been put into the hopper 2 by a loading machine such as a hydraulic shovel (not shown), is conveyed by the conveyor 6 in the direction of the arrow. In the vicinity of the discharge port 5, the soil to be improved T is further scraped to the discharge port 5 side by the protrusion member 52 of the scraping rotor 51 which is driven to rotate in the direction of the arrow, and advances in the direction of the white arrow. It is sent out of the hopper 2 with the upper height H defined. Therefore, if the conveying speed of the conveyor 6 is determined, the supply amount of the soil to be improved T per hour is determined. Next, the soil improving material supply device 7 adds a predetermined amount of the soil improving material K from the shooter 8 onto the soil to be improved T. As a result, the soil to be improved and the soil improving material having a predetermined mixing ratio are continuously supplied. Thereafter, the soil to be improved T and the soil improvement material K are mixed by a mixer (not shown) or the like to form an improved soil.
[0006]
[Problems to be solved by the invention]
However, the above configuration has the following problems.
FIG. 10 is an explanatory diagram of the first problem. In FIG. 10, when the soil T to be improved is a hard clay lump, when the scraping rotor 51 rotates in the direction of the arrow, the soil T to be improved above the rotation center of the scraping rotor 51 is opposite to the scraping direction by the protrusion member 52. And a diagonally downward force E is generated. Since the width M of the protrusion members 52 is large and the protrusion members 52 are arranged in a staggered manner, the force E increases. In addition, a frictional force with the conveyor 6 and a resultant force F of its own weight are generated obliquely upward at a lower portion of the soil T to be improved. Therefore, there is a problem that a bridge is formed as shown by hatching in the figure, a slip occurs between the conveyor 6 and the soil T to be improved, and a predetermined amount of the soil T to be improved is not conveyed.
FIG. 11 is an explanatory diagram of the second problem. In FIG. 11, when the soil to be improved is soil with high viscosity, the protrusion members 52 of the scraping rotor 51 have a large width M and are arranged in a staggered manner. Clay G adheres and becomes cylindrical. For this reason, there is a problem in that the scraping effect is reduced, and the scraping height C is reduced as indicated by D, so that the quantitative supply becomes unstable.
[0007]
The present invention has been made in view of the above-described problems, and has an improved soil supply device for improving soil quality capable of performing a stable quantitative supply even when the soil to be improved is a highly viscous soil, and is equipped with the same. It aims to provide a self-propelled soil improvement machine.
[0008]
Means for Solving the Problems, Functions and Effects
In order to achieve the above object, a first aspect of the present invention relates to a soil improvement target soil supply device, wherein a hopper for charging the soil to be improved, and a conveyor disposed below the hopper and transporting the soil to be improved, A scraping mechanism provided on the hopper and supplying the soil to be improved in cooperation with the conveyor, the scraping mechanism including a plurality of projecting members on an outer peripheral portion of the cylindrical member, and an outer peripheral surface of the cylindrical member. It has a configuration in which a scraping rotor provided with a gap surrounding the part in the rotation direction is provided.
[0009]
According to the first invention, even if the soil to be improved is clay, the soil to be improved escapes from the gap, and the amount of soil adhering to the outer peripheral portion of the cylindrical member is reduced. Therefore, the scraping performance is improved and the amount of the soil to be supplied is ensured, so that accurate supply amount management becomes possible.
[0010]
According to a second aspect of the present invention, there is provided an improved soil supply device for soil improvement, wherein a hopper for charging the soil to be improved, a conveyor disposed below the hopper for transporting the soil to be improved, and the soil to be improved provided in the hopper. And a scraping mechanism for supplying in cooperation with the conveyor.The scraping mechanism has a plurality of projecting members on an outer peripheral portion of a cylindrical member, and the projecting member has a tip in a rotation direction in a plan view. It is configured to have a tapered scraping rotor.
[0011]
According to the second aspect of the present invention, since the tip of the projecting member is tapered, the soil to be improved easily slides on the projecting member, the force for pressing the soil to be improved in the rotating direction is reduced, and even if the soil to be improved is clay, The amount of soil attached to the member decreases, and the amount of soil attached to the outer peripheral portion of the cylindrical member decreases. In addition, the ability to bite into clay is good, the scraping performance is improved, and the amount of soil to be improved supplied to the conveyor is ensured. Further, there is little possibility that a bridge is formed between the scraping rotor and the conveyor, and the supply amount can be accurately controlled.
[0012]
In a third aspect based on the first aspect, the projection member has a configuration in which a width dimension is smaller than a rotation dimension.
[0013]
According to the third invention, since the width dimension of the projection member is smaller than the rotation dimension, when the soil to be improved is clay, the force generated in the upper part of the scraping rotor in the direction opposite to the conveying direction of the conveyor is reduced. Therefore, a bridge is less likely to be formed between the scraping rotor and the conveyor. In addition, the ability to bite into the clay is improved, the soil can be scraped out efficiently, and a constant supply of the soil to be improved becomes possible.
[0014]
In a fourth aspect based on the first and third aspects, the scraping mechanism is provided on a support member that rotatably supports the scraping rotor and includes a scraper device that engages with the gap.
[0015]
According to the fourth aspect of the present invention, since the scraper device is provided, the soil attached to the outer periphery of the projection member and the cylindrical member is scraped off, and the amount of soil to be improved is reduced due to the large amount of soil attached to the outer periphery of the scraping rotor. No, it is possible to supply quantitatively the soil to be improved.
[0016]
According to a fifth aspect of the present invention, in the self-propelled soil improvement machine, a hopper for charging the soil to be improved, a conveyor disposed below the hopper and transporting the soil to be improved, and the soil provided on the hopper, A scraping mechanism for supplying in cooperation with a conveyor, wherein the scraping mechanism includes, on an outer peripheral portion of the rotating member, a plurality of projecting members having a width dimension smaller than a rotation direction dimension, and an outer peripheral portion of the rotating member. A scraping rotor provided with a gap surrounding the rotation direction, and a scraper device provided on a support member rotatably supporting the scraping rotor and engaging with the gap, or an outer peripheral portion of the cylindrical member, The apparatus is provided with an improved soil supply device for improving soil quality, which includes a scraping rotor having a plurality of protrusion members whose tips in the rotation direction are tapered when viewed.
[0017]
According to the fifth invention, in the soil improvement device for soil improvement mounted on the self-propelled soil improvement machine, even if the soil to be improved is clay, the amount of soil adhering to the outer peripheral portion of the rotating member is reduced. Further, since the scraping performance is improved, the amount of the soil to be supplied is secured, and the supply amount of the soil to be improved can be accurately controlled. Therefore, the self-propelled soil improvement machine of the present invention can efficiently cope with various types of soil to be improved at an arbitrary work site, thereby improving work efficiency and operation rate and reducing work cost.
[0018]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of a soil improvement device for soil improvement according to the present invention and a self-propelled soil improvement machine equipped with the device will be described in detail with reference to the drawings.
[0019]
FIG. 1 is a side view of an improved soil supply device 1 for soil improvement according to a first embodiment, and FIG. 2 is a view taken along the line AA in FIG. The same members as those shown in FIGS. 8 to 11 are denoted by the same reference numerals, description thereof will be omitted, and only different portions will be described.
1 and 2, a scraping mechanism 10 provided near a discharge port 5 formed in an improved soil discharge portion of the hopper 2 rotatably supports a scraping rotor 11 and both ends of the scraping rotor 11. A support member 16 and a scraper device 20 provided on the support member 16 are provided. The support member 16 is attached to the hopper 2, and the lower half of the scraping rotor 11 is located between the guides 4 provided below the opening 3 of the hopper 2. The scraping rotor 11 has a cylindrical member 12 and a plurality of projecting members 13 and 14 welded to an outer peripheral portion thereof. The projection members 13 and 14 may be attached to the cylindrical member 12 by another method such as bolting.
[0020]
FIG. 3 is an exploded view of the tubular member 12, showing the shapes and arrangements of the projecting members 13, 14. FIG. 3, the width dimension W of the projection members 13 and 14 is set smaller than the rotation dimension L1 and L2. In the present embodiment, the projection members 13 and 14 are configured by mounting the plate members vertically. The projection members 13 and 14 are arranged in a row in the rotation direction (the direction of the arrow) at predetermined intervals and in a plurality of rows in the width direction. Between the rows, the outer peripheral portion of the cylindrical member 12 is rotated in the rotation direction. A gap 15 of a predetermined length that makes a round is provided. In this embodiment, the projection members 13 and 14 are arranged in four rows. The number (including zero) of the projection members 13 and 14 and the dimensions L1 and L2 in the rotation direction are determined as appropriate. The width of the projection members 13 and 14 may be one or three or more.
[0021]
1 and 2, a scraper device 20 is attached to the support member 16. The scraper device 20 has a first scraper 21, a second scraper 22, and a connecting member 24 for connecting these to a mounting seat 23, and the mounting seat 23 is fastened to the support member 16 by bolts 25. A plurality of protrusions 26 and grooves 27 are provided alternately on the first scraper 21 and the second scraper 22, and the protrusions 26 are aligned with the gap 15 of the scraping rotor 11, and the grooves 27 are aligned with the protrusion members 13, 14. are doing. Reference numeral 6 denotes a conveyor, which is formed of, for example, an iron footboard or a belt conveyor.
[0022]
Next, the operation and effect will be described. In FIG. 1, even when the soil T to be improved is hard and highly viscous clay, when the scraping rotor 11 is driven to rotate in the direction of the arrow, the projecting members 13 and 14 have a small width W, so that the protrusion members 13 and 14 are well engaged, and a predetermined amount of The improved soil T can be scraped out in the white arrow direction. Further, since the clay attached to the projection members 13 and 14 and the cylindrical member 12 is scraped off by the first scraper 21, the projection members 13 and 14 always work effectively, so that the scraping amount is not reduced. Furthermore, since the width W of the projection members 13 and 14 is small, the force applied to the soil T to be improved in the direction opposite to the scraping direction is small, and there is little possibility that a bridge is formed between the scraping rotor 11 and the conveyor 6. For this reason, a stable quantitative supply of the soil to be improved T is possible by the cooperation of the scraping rotor 11 and the conveyor 6. The second scraper 22 works effectively when the scraping rotor 11 is rotated in the reverse direction.
[0023]
In the above embodiment, one scraper may be used.
[0024]
FIG. 4 is a perspective view of a projection member 13a according to another embodiment. As shown in FIG. 4, the protrusion 13a is formed with a protrusion 17 in a scraping direction indicated by an arrow, thereby further improving the biting property.
[0025]
FIG. 5 is a side view of an improved soil supply device 1a for soil improvement according to the second embodiment. The same members as those of the first embodiment are denoted by the same reference numerals, description thereof will be omitted, and only different portions will be described.
A scraping mechanism 10a is provided in the hopper 2 near the discharge port 5. The scraping mechanism 10a includes a scraping rotor 11a having a cylindrical member 12 and a plurality of protrusion members 18 fixedly provided on an outer peripheral portion. I have. FIG. 6 is a development view of the tubular member 12. In FIG. 6, the width M of the projecting member 18 fixed in a staggered manner on the outer peripheral portion of the cylindrical member 12 is the same as the conventional one described in FIG. 9, and the tip in the scraping direction (arrow direction) is It is tapered in plan view. Therefore, even if the soil to be improved is a hard clay, the biting property is good, and even if the soil is highly viscous, the soil slides on the inclined surface of the side portion, and the adhesion amount is small. Further, since the force applied to the soil to be improved in the direction opposite to the scraping direction is small, there is little possibility that a bridge is formed between the scraping rotor 11a and the conveyor 6, and a stable quantitative supply of the soil to be improved is possible.
[0026]
Note that the width dimension of the projection member 18 may be changed. Further, the projection members 18 may be arranged in a row, and a scraper may be provided.
[0027]
FIG. 8 is a partial cross-sectional side view showing an example of a self-propelled soil conditioner 30 equipped with the improved soil supply device 1 for soil condition improvement of the present invention. In FIG. 8, a hopper 2 for charging the soil to be improved is mounted at a front portion of a frame 32 having a running crawler belt 31. The hopper 2 has a scraping mechanism 10. A conveyor 6 is disposed below the hopper 2, and a soil improving material supply device 7 is provided behind the hopper 2. At the center of the frame 32, a crusher 33 for crushing and mixing the soil to be improved and the soil improvement material conveyed by the conveyor 6 is mounted. An unloading conveyor 34 for unloading products is provided behind the frame 32. Reference numeral 35 denotes a driving device such as an engine.
[0028]
Next, the operation will be described. In FIG. 8, the soil to be improved, which has been put into the hopper 2 by a loading machine such as a hydraulic shovel, is supplied in a fixed amount by the cooperation of the conveyor 6 and the scraping mechanism 10. Next, the soil improving material supply device 7 adds a predetermined amount of the soil improving material to the soil to be improved, and crushes and mixes it with the crusher 33 to produce the improved soil. The produced improved soil is carried out of the machine by the carry-out conveyor. Since this machine is self-propelled, it can be moved to any work site.
[0029]
According to this configuration, as described above, the soil-improved soil supply device 1 can stably and continuously supply a constant amount even if the soil to be improved is a hard clay mass. The improved soil supply device 1 for soil improvement was mounted on a self-propelled soil improvement machine 30. Therefore, soil improvement work can be performed at an arbitrary work site, and it is possible to cope with various types of soil to be improved, and the work efficiency, operation rate, and versatility of the self-propelled soil improvement machine 30 can be improved. , Work costs can be reduced.
[0030]
In the above embodiment, the self-propelled soil improvement machine is equipped with the soil improvement target soil supply device 1 of the first embodiment described above, but the soil improvement target soil supply device 1a of the second embodiment is mounted. May be mounted, and the operation and effect are the same.
[Brief description of the drawings]
FIG. 1 is a side view of an improved soil supply device for soil improvement according to a first embodiment of the present invention.
FIG. 2 is a view as viewed in the direction of arrows AA in FIG. 1;
FIG. 3 is a development view of a tubular member of the scraping rotor according to the first embodiment of the present invention.
FIG. 4 is a perspective view of a projection member according to another embodiment.
FIG. 5 is a side view of an improved soil supply device for soil improvement according to a second embodiment of the present invention.
FIG. 6 is a development view of a tubular member of a scraping rotor according to a second embodiment of the present invention.
FIG. 7 is a side view of a self-propelled soil conditioner equipped with the improved soil supply device for soil condition improvement of the present invention.
FIG. 8 is a side view of a conventional soil supply device for improving soil quality.
FIG. 9 is a development view of a tubular member of a conventional scraping rotor.
FIG. 10 is an explanatory diagram of a first problem of the related art.
FIG. 11 is an explanatory diagram of a second conventional problem.
[Explanation of symbols]
1, 1a: improved soil supply device for soil improvement, 2: hopper, 3: opening, 4: guide, 5: discharge port, 6: conveyor, 10, 10a: scraping mechanism, 11, 11a: scraping rotor, 12: cylindrical member, 13, 13a, 14, 18 ... projecting member, 15 ... gap, 16 ... supporting member, 17 ... projecting portion, 20 ... scraper device, 21 ... first scraper, 22 ... second scraper, 23 ... Mounting seat, 24 joining member, 26 projecting part, 27 groove part, 30 self-propelled soil improvement machine, 31 running track, 32 frame, 33 crushing machine, 34 conveyor for discharging, 35 driving apparatus.

Claims (5)

In the improved soil supply device for soil improvement,
A hopper (2) for charging the soil to be improved,
A conveyor (6) disposed below the hopper (2) for transporting the soil to be improved;
A scraping mechanism (10) provided on the hopper (2) and supplying the soil to be improved in cooperation with the conveyor (6);
The scraping mechanism (10) includes a plurality of projection members (13, 14) on the outer peripheral portion of the cylindrical member (12), and a gap (15) that rotates around the outer peripheral portion of the cylindrical member (12) in the rotation direction. An improved soil supply device for improving soil quality, comprising a scraping rotor (11) provided with (1). In the improved soil supply device for soil improvement,
A hopper (2) for charging the soil to be improved,
A conveyor (6) disposed below the hopper (2) for transporting the soil to be improved;
A scraping mechanism (10a) provided in the hopper (2) and supplying the soil to be improved in cooperation with the conveyor (6);
The scraping mechanism (10a) has a plurality of projecting members (18) on the outer periphery of the cylindrical member (12), and the projecting member (18) has a tapered tip in the rotation direction in plan view. An improved soil supply device for improving soil quality, comprising a scraping rotor (10a). The improved soil supply device for soil improvement according to claim 1,
The improved soil supply device for improving soil quality, wherein the protrusion members (13, 14) have a width dimension smaller than a rotation dimension. The improved soil supply device for soil improvement according to claim 1 or 3,
The scraping mechanism (10) is provided on a support member (16) that rotatably supports the scraping rotor (11), and includes a scraper device (20) that engages with the gap. Improved soil supply equipment for improvement. In self-propelled soil improvement machine,
A hopper (2) for charging the soil to be improved,
A conveyor (6) disposed below the hopper (2) for transporting the soil to be improved;
A scraping mechanism (10) provided on the hopper (2) and supplying the soil to be improved in cooperation with the conveyor (6);
The scraping mechanism (10, 10a) includes, on an outer peripheral portion of the rotating member (12), a plurality of projecting members (13, 14) having a width dimension smaller than a rotating direction dimension, and an outer peripheral surface of the rotating member (12). A scraping rotor (11) provided with a gap (15) surrounding the part in the rotation direction,
A scraper device (20) provided on a support member (16) rotatably supporting the scraping rotor (11) and engaging with the gap (15);
Or a scraping rotor (11a) having a plurality of projecting members (18) whose tip in the rotation direction is tapered in plan view on the outer peripheral portion of the cylindrical member (12).
A self-propelled soil improvement machine equipped with an improved soil supply device (1, 1a) for soil improvement.

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