JP2004059186A - Reformation soil supply device for soil reformation, and self-propelled 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 and quantitatively supplying reformation soil in hard clay blocks. <P>SOLUTION: A carrying conveyor 6 is disposed under a hopper 2 for charging the reformation soil T, a discharge port 5 is provided at a discharge part at a lower part of the hopper 2, and close to it, an endless belt body 10 to compose a scraping mechanism 8 is provided in the hopper 2. The endless belt body 10 comprises a start wheel 12 provided at one end part of a frame 11, a guide wheel 14 provided at the other end part, and a belt 15 comprising a plurality of articulation bodies 16 wound around the start wheel 12 and the guide wheel 14. The endless belt body 10 is disposed to be vertical, with the start wheel 12 on the upper side. An angle α formed by a straight part 17 to get in contact with the reformation soil T and an upper surface 7 of the conveyor 6 is set at about 90° from a scraping direction toward the straight part 17. <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 hard and viscous soil to be improved, and a self-propelled soil improvement machine equipped with the same. .
[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. A predetermined ratio of the soil improvement material is added to the remaining soil (the soil to be improved), and a predetermined amount of the soil improvement material is continuously supplied while a constant amount of the soil to be improved is continuously supplied to efficiently improve the soil. The method of adding is used. For that purpose, it is important to continuously supply the soil to be improved.
[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. 9 is a schematic view of the improved soil supply device 70 for improving the soil quality. In FIG. 9, a conveyor 6 for transporting the soil to be improved is provided below the hopper 2. A discharge port 5 for defining a height H of the conveyed soil T to be conveyed from the upper surface 7 of the conveyor 6 is formed in a lower discharge portion of the hopper 2. A scraping rotor 71 having a plurality of projecting members 72 is provided in the hopper 2 near the discharge port 5, and the scraping rotor 71 is driven to rotate. A soil improving material supply device 53 is provided outside the discharge port 5, and the shooter 57 is opened on the conveyor 6 to discharge a predetermined amount of the soil improving material.
[0004]
Next, the operation will be described. In FIG. 9, the soil T to be improved, which has been introduced 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 toward the discharge port 5 by a scraping rotor 71 that is driven to rotate in the direction of the arrow, advances in the direction of the white arrow, and from the upper surface 7 of the conveyor 6 at the discharge port 5. Is sent out of the hopper 2 with a predetermined height H. 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 53 adds a predetermined amount of the soil improving material K from the shooter 57 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 and the soil improvement material are mixed by a mixer or the like (not shown) to form an improved soil.
[0005]
[Problems to be solved by the invention]
However, the above configuration has the following problems.
When the soil to be improved is a hard clay mass, a bridge of soil is formed between the scraping rotor 71 and the conveyor 6, and there is a problem that the soil to be improved is not discharged by a predetermined amount. FIG. 10 is an explanatory diagram showing this state. The same members as those in FIG. 9 are denoted by the same reference numerals, description thereof will be omitted, and only different portions will be described. In FIG. 10, in a portion above the rotation center P of the scraping rotor 71, a force in a direction opposite to the transport direction is applied to the improved soil T by the protrusion member 72, and a force of a diagonally downward white arrow E is generated. On the soil T to be improved on the belt conveyor 6, a force of a diagonally upward white arrow F which is a resultant force of the force in the conveying direction of the belt conveyor 6 shown by the arrow and the reaction force of the gravity of the soil T to be improved is shown. appear. The bridges shown by hatching in the figure are formed by the forces E and F, causing a slip between the soil T to be improved and the conveyor 6, and there is a problem that a predetermined amount of the soil T is not supplied.
FIG. 11 is a front sectional view of the hopper 2. In FIG. 11, the included angle β of the opening 3 at the upper part of the hopper 2 is an obtuse angle (for example, 140 °), and the guide part 4 provided at the lower part of the opening 3 and opening toward the lower conveyor 6 is substantially formed. Vertical. When the hard soil to be improved T is put into the hopper 2, a diagonal force as shown by an arrow is generated, so that a bridge is formed in the opening 3 as shown by hatching in the figure. For this reason, there is a problem that the soil to be improved T does not fall on the guide portion 4 and the soil to be improved T is not supplied by a predetermined amount.
[0006]
The present invention has been made in view of the above-mentioned problems, and has an improved soil supply device for improving soil quality capable of stably supplying a predetermined amount of soil to be improved irrespective of the soil quality, and a self-installed soil-supplying device equipped with the same. It aims to provide a traveling soil improvement machine.
[0007]
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 in the hopper to supply the soil to be improved in the scraping direction in cooperation with the conveyor, wherein the scraping mechanism is a belt-shaped endless body.
[0008]
According to the first invention, since the scraping mechanism is a belt-like endless body, it is possible to prevent a force for pushing back the soil to be improved above the scraping portion in a direction opposite to the scraping direction. Therefore, even if the soil to be improved is hard clay, the soil to be improved is not bridged between the scraping mechanism and the conveyor, and the soil to be improved can be supplied stably.
[0009]
In a second aspect based on the first aspect, the strip-shaped endless body is constituted by a plurality of connecting bodies.
[0010]
According to the second aspect of the present invention, it has the functions and effects of the first aspect of the present invention, and furthermore, since each connecting member swings and vibrates, it is possible to prevent the adhesion of the clay improved soil.
[0011]
According to a third aspect of the present invention, in the first or second aspect, a straight portion that contacts the soil to be improved is provided on the endless belt-like body, and an angle formed by the straight portion and the upper surface of the conveyor is an angle greater than 0 °. The angle is less than 90 °.
[0012]
According to the third invention, in addition to the functions and effects of the first and second inventions, it is possible to more reliably prevent a force in a direction opposite to the scraping direction from being applied to the soil to be improved. Therefore, even if the soil to be improved is hard clay, it is possible to reliably prevent a bridge from being formed between the scraping mechanism and the conveyor.
[0013]
According to a fourth aspect of the present invention, there is provided an improved soil supply apparatus for improving soil quality, wherein a hopper for charging the soil to be improved, a conveyor disposed below the hopper for transporting the soil to be improved, and a soil provided on the hopper, And a scraping mechanism which cooperates with the conveyor to supply the scraping material in a scraping direction. The scraping mechanism has a structure in which a plurality of scraping rotors are sequentially arranged upward.
[0014]
According to the fourth aspect of the present invention, by sequentially providing the positions of the plurality of scraping rotors in the upper portion, a force for pushing back in the opposite direction to the scraping direction is not applied to the improved soil on the lower portion of the scraping rotor for quantitative supply. Can be Therefore, even if the soil to be improved is hard clay, the soil to be improved is not bridged between the scraping mechanism and the conveyor, and the soil to be improved can be supplied stably.
[0015]
In a fifth aspect based on the fourth aspect, the scraping rotor positioned above is detachable from the hopper.
[0016]
According to the fifth invention, when the soil to be improved is general soil, one scraping rotor is used, and when the soil to be improved is slightly viscous, the scraping rotor can be added above the soil. Therefore, it is possible to easily cope with various types of soil in an optimum state, and workability and versatility can be improved.
[0017]
In a sixth aspect based on the fourth aspect, the scraping rotor positioned above is mounted on a second hopper detachable from the hopper, and the second hopper is provided with an opening having a substantially vertically opposed side wall surface. And a substantially horizontal upper surface that covers the upper surface of the hopper.
[0018]
According to the sixth aspect, the opening facing the conveyor is provided with substantially vertically opposed side walls, so that even if the soil to be improved is clay-based, it is easy to fall, and the upper surface is made flat so that it is difficult to form a bridge. . In addition, since the second hopper is made detachable, when the soil to be improved is general soil, one scraping rotor can be used to work in an optimum state for general soil. Further, in the case where the soil to be improved is a hard and sticky clay, addition of a scraping rotor and a second hopper prevents the formation of bridges and facilitates the drop of the soil to be improved onto the conveyor, thereby stabilizing the soil. It is possible to provide a fixed quantity supply. Therefore, work can be performed in an optimum state according to soil properties, and workability and versatility can be improved.
[0019]
A seventh invention is a self-propelled soil improvement machine, wherein a hopper for charging the soil to be improved, a conveyor disposed below the hopper and configured to transport the soil to be improved, and the soil provided on the hopper is provided. A belt-shaped endless body to be supplied in cooperation with the conveyor, or a plurality of scraping rotors sequentially arranged above, an opening having side walls facing substantially vertically, and a substantially horizontal upper surface covering the upper surface of the hopper; And a second soil hopper that can be attached to and detached from the hopper.
[0020]
According to the seventh invention, the self-propelled soil improvement machine is equipped with an improved soil supply device for soil improvement that can stably supply even if the soil to be improved is general soil or hard clay. It is possible to work efficiently at any work site corresponding to various types of soil. Therefore, the operation rate of the self-propelled soil improvement machine is improved, and the working cost can be reduced.
[0021]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, an embodiment of an improved soil supply device for improving soil quality according to the present invention will be described in detail with reference to the drawings.
[0022]
FIG. 1 is a side sectional 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. 1. 1 and 2, a conveyor 6 for transporting the soil T to be improved is disposed below the hopper 2 for storing the soil T to be improved, and a conveyor 6 for the soil T to be improved is provided at a discharge portion below the hopper 2. A discharge port 5 for defining a height H from the upper surface 7 of the nozzle is formed. The conveyor 6 is a link conveyor or a belt conveyor. A strip-shaped endless body 10 constituting the scraping mechanism 8 is provided in the hopper 2 near the discharge port 5. The belt-shaped endless body 10 is provided at one end of a frame 11 and driven by a hydraulic motor 13, a guide wheel 14 provided at the other end, and looped around the start wheel 12 and the guide wheel 14. And a belt 15 formed by connecting a plurality of connecting members 16 with pins. The belt-shaped endless body 10 is disposed substantially upright with the starting wheel 12 side facing upward, and both ends of arms 20, 20 fixed to both side surfaces of the frame 11 are provided in the opening 3 of the hopper 2. The brackets 21 and 21 are fastened with bolts 22 and are supported via the arms 20 and 20. The belt-shaped endless body 10 is provided with a straight portion (a straight portion facing the inside of the hopper) 17 that comes into contact with the soil T to be improved, and the angle α formed between the straight portion 17 and the upper surface 7 of the conveyor 6 is , At angles greater than 0 ° and less than about 90 °.
[0023]
Next, the operation will be described. In FIG. 1, the soil to be improved T loaded on the hopper 2 by a loading machine such as a hydraulic shovel is conveyed in the direction of the white arrow a when the conveyor 6 is driven in the direction of the arrow. When the starting wheel 12 is driven to rotate in the direction of the arrow, a downward force as indicated by a white arrow b is applied to the soil to be improved T that is in contact with the linear portion 17 of the belt 15. Therefore, no bridge is formed between the belt-shaped endless body 10 and the conveyor 6, and the force of the improved soil T applied to the upper surface 7 of the conveyor 6 increases, and the conveying force increases. Further, since a force for scraping in the direction of the discharge port 5 is applied to the lower part of the strip-shaped endless body 10 as shown by the white arrow c, the soil to be improved T is extruded with a large force in the direction of the white arrow d and is stable at the height H. Supplied as
[0024]
Since the present invention is configured as described above, the following effects can be obtained.
Since no force is applied to the soil to be improved in a direction opposite to the conveying direction of the conveyor, no bridge is formed between the belt-shaped endless body and the conveyor even if the soil to be improved is a hard clay mass. In addition, since a downward force is applied to the soil to be improved by the straight portion of the belt, the force for pressing the soil to be improved against the conveyor increases. For this reason, the frictional force between the soil to be improved and the conveyor increases, and there is little possibility that slippage occurs between the soil to be improved and the belt, and the belt is conveyed with a large force. Therefore, it is possible to stably supply a predetermined amount of the soil to be improved.
Since the starting wheel of the belt-shaped endless body is positioned above, the stone or the like does not bite between the teeth of the starting wheel and the connecting body, and the belt-shaped endless body is driven smoothly, and there is little possibility of failure.
[0025]
FIG. 3 is a side cross-sectional view of an improved soil supply device 1a for soil improvement according to a 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. The angle α formed between the straight portion 17 of the belt-shaped endless body 10 that comes into contact with the soil T to be improved and the upper surface 7 of the conveyor 6 is about 45 °. Therefore, a force is applied to the soil T to be improved in a diagonal direction toward the scraping direction as indicated by a white arrow, and the force for feeding the soil T to the discharge port 5 can be increased. Improved soil T can be supplied quantitatively.
[0026]
FIG. 4 is a side sectional view of an improved soil supply device for soil improvement 1b according to a third embodiment, and FIG. 5 is a view taken in the direction of arrows BB (a front sectional view) of FIG. 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.
In FIG. 4, a second scraping rotor 31 is provided in front of a first scraping rotor 30 provided near the discharge port 5 of the hopper 2 to constitute a scraping mechanism 8. The first scraping rotor 30 and the second scraping rotor 31 have a plurality of projecting members 33 around the rotor 32. The distance C between the lower end of the protrusion member 33 of the second scraping rotor 31 and the upper surface 7 of the conveyor 6 is substantially the same as the distance D of the center P of the first scraping rotor 30 from the upper surface 7 of the conveyor 6.
In FIG. 5, the first scraping rotor 30 is rotatably attached to the guide portion 4 of the hopper 2. Both ends of the second scraping rotor 31 are rotatably supported integrally with brackets 34, 34, and the brackets 34, 34 are detachably attached to the opening 3 of the hopper 2. The first scraping rotor 30 and the second scraping rotor 31 are driven to rotate in the same direction as indicated by the arrow shown in FIG.
[0027]
Next, the operation will be described. When the first scraping rotor 30 and the second scraping rotor 31 are driven, the soil T to be improved is scraped in the direction indicated by the white arrow. At this time, since the second scraping rotor 31 is provided, no force in the direction opposite to the scraping direction is generated above the first scraping rotor 30, and even if the soil to be improved T is a hard lump of clay, the first scraping rotor 30 may be used. There is no bridge between the conveyor and the conveyor. Further, since the position of the second scraping rotor 31 is high, no bridge is formed between the second scraping rotor 31 and the conveyor 6. Therefore, it is possible to stably supply the soil T to be improved. In the present embodiment, the number of scraping rotors is two, but three or more scraping rotors may be attached.
[0028]
As described above, as shown in FIG. 11, when the soil to be improved is a hard clay mass, a bridge is formed in the opening 3 of the hopper 2 and the soil to be improved does not fall into the lower guide portion 4, There is a problem that the soil to be improved is not supplied quantitatively. FIG. 6 is a front sectional view of an improved soil supply device 1c for soil improvement according to a fourth embodiment devised to solve this problem. The same members as those of the third embodiment shown in FIG. 5 are denoted by the same reference numerals, description thereof will be omitted, and only different portions will be described.
In FIG. 6, the opening 3 of the hopper 2 is provided with substantially perpendicularly facing side walls 41, 41 having the same width as the guide 4 of the hopper 2, and a pair of upper, substantially horizontal upper surfaces 42, 42. The second hopper 40 is detachably fastened by bolts 43, and the upper surfaces 42, 42 cover the opening 3 of the hopper 2. A second scraping rotor 31 is rotatably mounted between the side wall surfaces 41, 41 of the second hopper 40, and is integrally formed with the second hopper 40.
[0029]
FIG. 7 is a perspective view showing a state in which the second hopper 40 and the hopper 2 are separated. As shown in FIG. 7, a first scraping rotor 30 is rotatably attached to the guide portion 4 of the hopper 2. As described above, the second hopper 40 has a substantially horizontal upper surface portion 42 and a substantially vertical side wall surface 41, and the second scraping rotor 31 is rotatably mounted on the side wall surfaces 41, 41. The second hopper 40 is assembled so as to cover the upper surface of the hopper 2 and fastened with bolts 43.
[0030]
Next, the operation of the second hopper 40 will be described. Since the upper surface portion 42 of the second hopper 40 is substantially horizontal, an upward force is generated on the loaded soil to be improved. Therefore, even if the soil to be improved is a hard clay mass, no bridge is formed, and since the substantially vertical side wall surface 41 is provided, the soil to be improved easily falls. If it does not fall, it can be dropped by pressing it down with a bucket or the like of a hydraulic shovel. Further, the soil to be improved accumulated on the upper surface portion 42 can be dropped between the side wall surfaces 41, 41 by the above-described bucket or the like, and even a hard clay mass can be stably supplied in a constant amount.
[0031]
Note that the second hopper 40 may be combined with the band-shaped endless body 10 of the first and second embodiments.
[0032]
FIG. 8 is a side view of a self-propelled soil conditioner 50 equipped with the soil condition improved soil supply device 1 having the band-shaped endless body 10 as an example of the soil condition improved soil supply device of the present invention. In FIG. 8, a hopper 2 for charging the soil to be improved is mounted on a front portion of a frame 52 having a crawler belt 51 for traveling. The hopper 2 includes a belt-shaped endless body 10. A conveyor 6 is provided below the hopper 2, and a soil improving material supply device 53 is provided behind the hopper 2. A crusher 54 that crushes and mixes the soil to be improved and the soil improvement material conveyed by the conveyor 6 is mounted at the center of the frame 52. An unloading conveyor 55 for unloading products is provided behind the frame 52. Reference numeral 56 denotes a driving device such as an engine.
[0033]
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 (not shown), is supplied from the hopper 2 in a fixed amount by the cooperation of the conveyor 6 and the band-shaped endless body 10. Next, the soil improvement material supply device 53 adds a predetermined amount of the soil improvement material onto the soil to be improved supplied by the conveyor 6, and this is crushed and mixed by the crusher 54 to produce the improved soil. You. The produced improved soil is carried out of the machine by the carry-out conveyor 55. Since this machine is self-propelled, it can be moved to any work site.
[0034]
According to this configuration, a self-propelled soil improvement machine is provided with an improved soil supply device for soil improvement capable of stably and continuously supplying a fixed amount of hard clay lump even when the soil is to be improved. Therefore, soil improvement work can be performed at any work site, and it is possible to cope with various types of soil to be improved, thereby improving work efficiency, availability, and versatility, and reducing work costs.
[0035]
In the above embodiment, the self-propelled soil improvement machine is equipped with the improved soil supply device 1 for soil improvement of the first embodiment described above, but the second, third, and fourth embodiments The improved soil supply device 1a, 1b, 1c for improving soil quality may be mounted.
[Brief description of the drawings]
FIG. 1 is a side sectional view of an improved soil supply device 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 side sectional view of an improved soil supply device according to a second embodiment of the present invention.
FIG. 4 is a side sectional view of an improved soil supply device according to a third embodiment of the present invention.
FIG. 5 is a view taken in the direction of arrows BB in FIG. 4;
FIG. 6 is a front sectional view of an improved soil supply device according to a fourth embodiment of the present invention.
FIG. 7 is a perspective view showing a configuration of a hopper and a second hopper.
FIG. 8 is a side view of a self-propelled soil conditioner equipped with the improved soil supply device of the present invention.
FIG. 9 is a side sectional view of a conventional improved soil supply device.
FIG. 10 is a side sectional view for explaining a problem of the conventional improved soil supply device.
FIG. 11 is a front sectional view for explaining a problem of the conventional improved soil supply device.
[Explanation of symbols]
1, 1a, 1b, 1c: improved soil supply device for soil improvement, 2: hopper, 3: opening, 4: guide, 5: discharge port, 6: conveyor, 7: upper surface, 8: scraping mechanism, 10 ... Band-shaped endless body, 11 ... Frame, 12 ... Starting wheel, 13 ... Hydraulic motor, 14 ... Induction wheel, 15 ... Belt, 16 ... Linking body, 17 ... Linear part, 20 ... Arm, 21, 34 ... Bracket, 30 ... First scraping rotor, 31 Second scraping rotor, 32 Rotor, 33 Projecting member, 40 Second hopper, 41 Side wall surface, 42 Top surface, 44 Opening, 50 Self-propelled soil improvement 51, a crawler for traveling, 52, a frame, 53, a feeder for soil improvement material, 54, a crusher, 55, a conveyor for unloading, 56, a driving device, 57, a shooter, 71, a scraping rotor, 72, a projection member.

Claims (7)

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 (8) provided on the hopper (2) and supplying the soil to be improved in the scraping direction in cooperation with the conveyor (6);
The improved soil supply device for soil improvement, wherein the scraping mechanism (8) is a belt-shaped endless body (10). The improved soil supply device for soil improvement according to claim 1,
The endless body (10) is composed of a plurality of connecting bodies (16).
An improved soil supply device for soil improvement. The improved soil supply device for soil improvement according to claim 1 or 2,
An angle (α) formed between the straight portion (17) and the upper surface (7) of the conveyor (6) is 0 °. An improved soil supply device for soil improvement wherein the angle is greater than about 90 ° at a greater angle. 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 (8) provided on the hopper (2) and supplying the soil to be improved in the scraping direction in cooperation with the conveyor (6);
The improved soil supply device for improving soil quality, wherein the scraping mechanism (8) has a plurality of scraping rotors (30, 31) arranged sequentially upward. The improved soil supply device for soil improvement according to claim 4,
The improved soil supply device for soil improvement, wherein the scraping rotor (31) located above is detachable from the hopper (2). The improved soil supply device for soil improvement according to claim 4,
The scraping rotor (31) located above is
An opening (44) mounted on a second hopper (40) that is detachable from the hopper (2), the second hopper (40) having a substantially vertically opposed side wall surface (41);
An improved soil supply device for improving soil quality, comprising: a substantially horizontal upper surface portion (42) covering an upper surface of the hopper (2). 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 belt-shaped endless body (10) provided on the hopper (2) and supplying the soil to be improved in the scraping direction in cooperation with the conveyor (6), or a plurality of scraping rotors (30, 31) arranged sequentially upward. )When,
It has an opening (44) having a side wall surface (41) facing substantially vertically, and a substantially horizontal upper surface (42) covering the upper surface of the hopper (2), and is detachable from the hopper (2). A self-propelled soil improvement machine equipped with an improved soil supply device (1, 1a, 1b, 1c) for soil improvement having a second hopper (40).

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