JP3416055B2 - Self-propelled soil improvement machine - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a machine used for improving soft ground and strengthening the ground, and improving the quality of earth and sand to meet a predetermined purpose. The present invention relates to a self-propelled soil improvement machine that performs soil improvement while traveling appropriately.

[0002]

2. Description of the Related Art For example, when burying gas pipes, water and sewage works, other road works, foundation works, etc., it is desirable to backfill the soil generated by excavation as it is, but the soil generated may not be suitable for backfilling. is there. In this case, it is necessary to carry out the generated soil and newly bring in good quality soil to fill the excavation site. If the generated soil is not suitable for backfilling, for example, rocks, brick pieces, concrete pieces, etc.
Furthermore, there are cases where a large amount of metal or other foreign matter is contained. In addition, the soil itself is weak, such as clay soil with extremely small particle size and high viscosity, and soil that is hard to solidify due to excessive weathering, and if it is backfilled as it is, land subsidence etc. May occur. Poor soil generated by excavation at construction sites is also a type of industrial waste, which limits the disposal site. Therefore, even if the soil is poor, it is strongly required to convert it into a reusable resource instead of discarding it as it is.

Here, when foreign matter is merely mixed in the soil generated by excavation, the foreign matter can be reused as it is by removing the foreign matter by sieving. on the other hand,
In order to reuse the soft soil that may cause subsidence when the generated soil is backfilled, soil improvement must be performed. Soil improvement is, for example, mixing and solidifying a soil improvement material containing lime, cement, or the like as a main component in soil and sand, and by doing so, it can be converted into high-quality soil.

[0004] To carry out the solidification treatment of the earth and sand, the earth and sand and the soil improving agent are mixed. Typical mixing methods of the earth and sand and the soil improving agent are a mixing method using a stirring means and a rotary method. A crushing method provided with a hitting element has been conventionally known. In the mixing method, a stirring means is provided in the tank, and the sand and the soil improving agent are put into this tank, and the stirring means uniformly stirs and mixes. The stirring means stirs the inside of the tank. Only the function is to be exhibited, and the treatment is performed in a batch method and the screw type stirring means is used so that the soil and the soil improving material are transferred while being stirred, so that the solidification treatment is continuously performed. There is something to do.

In general, the mixing system, whether it is a batch system or a continuous system, is generally constructed as a stationary type processing plant. This type of treatment plant is provided with a sediment collection site that requires soil improvement and a deposit site for the generated improved soil, and transports the soil generated at various construction sites with a dump truck or the like. , When the soil is improved by accumulating it at the accumulation place of this treatment plant and storing it so that the improved soil is accumulated at a predetermined depositing place, when using this improved soil as a backfill material, etc. It will be carried out to each site by a dump truck or the like.

On the other hand, a processing device having a crushing system equipped with a rotary hitting element, which is configured as a self-propelled machine, is disclosed in, for example, Japanese Patent Application Laid-Open No. 9-195265. This machine has an undercarriage with crawler tracks on the undercarriage, and the undercarriage is loaded with hoppers, soil-improving material hoppers, and soil and soil-improving materials supplied from both hoppers. It is configured to include a supply unit including a conveyor belt, a crusher as a processing device, and a conveyor for carrying out. The crusher has a rotary striker, and the earth and sand conveyed along the conveyor belt and the soil improvement material are dropped by their own weight, and by hitting with this rotary striker in the middle of this fall, the clod is It is made to be finely crushed, and the soil improving agent is mixed with the earth and sand crushed in this way. This crushing-type processing apparatus is mainly used for directly carrying to roads, foundation works, and other places where soil is to be improved, and for improving the soil quality of the excavated soil and directly backfilling it.

[0007]

By the way, in carrying out the soil improvement treatment, the mixing ratio of the soil and the soil improving material has a very serious influence on the quality of the improved soil as a product.
When the ratio of the soil improvement material decreases with respect to the target mixing ratio, the solidification degree of the produced improved soil becomes insufficient. As a result, if the improved soil is used for burying it in the excavation site in the foundation work, it causes inconvenience such as ground subsidence. In addition, if there is a partial variation in the mixing ratio, it may cause differential settlement. On the other hand, when the ratio of the soil quality improving material is higher than the set ratio, no inconvenience such as ground subsidence occurs, but not only waste of the soil quality improving material occurs, but also the degree of solidification becomes higher than necessary. If such an excessively solidified improved soil is used for burying the pipe in the construction for burying the pipe, the ground becomes too hard when excavating again for repairing the pipe, There is also a problem that re-excavation becomes difficult. In short, in order to obtain high-quality improved soil, the mixing ratio of the earth and sand and the soil improvement material must be strictly controlled so as to be within a certain range.

In a large plant equipped with a stationary treatment device, it is possible to provide a measuring means for controlling the mixing ratio of the soil and the soil improving material in order to improve the quality of the improved soil. However, it is difficult to provide a mechanism for strictly controlling the mixing ratio in a small machine, especially in a self-propelled processing device. In the above-mentioned self-propelled crushing processing apparatus, in order to keep the amount of earth and sand conveyed by the conveyor belt, a gate having a predetermined opening area is provided in the earth and sand input hopper, and a rotating roller having a protrusion on the outer peripheral surface. It is equipped with a leveling roller consisting of, and is carried so as to limit the height of the earth and sand passing through the gate, that is, the bulk, so that the amount of earth and sand supplied can be kept constant, and a soil improvement material. The hopper is configured to supply the improved material in fixed quantities. As a result, it becomes possible to control the mixing ratio of the soil and the soil improvement material to some extent.

However, depending on the viscosity and density of the earth and sand, the amount of earth and sand deposited in the earth and sand hopper, the soil quality, and the like, a constant amount of earth and sand cannot always be supplied by the conveyor belt. In particular, when the sand is not continuously fed using a conveyor or the like, but when the sand is intermittently fed using a hydraulic excavator or the like, the amount of the sand stored in the hopper changes greatly, The volume of sediment passing through the gate may not always be constant. Further, even if the sand and sand have the same bulk, the density and the viscosity of the earth and sand change depending on the amount of the earth and sand in the hopper, the water content of the earth and sand, and the like, so that the weight becomes different. Therefore, in the method of adjusting the bulk of the transported soil on the conveyor with the gate and the leveling roller, and in the method of supplying a fixed amount of the soil improving material, the mixing ratio of the soil and the soil improving material may vary. There is a drawback that high quality improved soil cannot be produced stably.

The present invention has been made in view of the above points, and it is an object of the present invention to provide an extremely high quality improved soil in which earth and sand and a soil improvement agent are uniformly mixed and the mixing ratio is constant. Is to be able to manufacture efficiently.

[0011]

In order to achieve the above-mentioned object, the present invention provides a body frame and a body frame and both sides in the width direction of the body frame in a self-propelled soil improvement machine for modifying soil. Crawler type traveling means, a processing mechanism portion provided on the main body frame and having a sand introduction and discharge portion, one end on one side in the longitudinal direction of the main body frame, and the other end of the processing mechanism portion. A conveyer provided with an inclination so as to face the introduction part, a sediment hopper provided above one end side of this conveyer, and the other end side above the conveyer conveyor, in contact with sediment to absorb moisture and react. A soil-improving material hopper arranged so that the soil-improving material supply port is located, one end of which is located below the discharge portion of the processing mechanism portion, and the other end of which is located outside the longitudinal direction of the main body frame. Up to A discharge conveyor provided on the main body frame so that it exists, a machine room provided on the other side in the longitudinal direction of the main body frame, a sediment supply amount measuring means provided on the transfer conveyor, and the main body frame, Control means for controlling the supply amount of the soil improvement material supplied to the soil on the conveyor based on the measured value from the sediment supply amount measuring means, the earth and sand supply amount measuring means
Can be moved up and down to a position on the outflow side of the sediment hopper
And the height of this earth and sand leveling roller
A self-propelled soil improvement machine comprising a height position detecting means for detecting a position . Achieve the above objectives
In addition, the present invention also provides a self-propelled method for modifying sediment.
In the soil improvement machine, the main frame and the main frame
Crawler type traveling means provided on both sides in the width direction of the boom, and the book.
It is provided on the body frame and has an inlet and outlet for sediment.
Processing mechanism and one end in the longitudinal direction of the body frame
One side, the other end faces the introduction section of the processing mechanism section
As shown in the figure below, there is
The earth and sand hopper provided above one end of the
Above the other end of the conveyor, it comes in contact with soil and absorbs moisture.
Arranged so that the supply port of the soil improvement agent that reacts is located
Soil improvement material hopper and one end of the processing mechanism
At the lower position of the discharge part, the other end is the long side of the body frame.
The main body frame so that it extends to the outer position on the other side in the direction.
Discharge conveyor installed in the frame and the length of the main frame
Provided in the machine conveyor provided on the other side of the direction and the transfer conveyor
Installed in the body frame
Based on the measured value from the sediment supply measuring means
Of the soil improvement material supplied to the sediment on the conveyor
And a control means for controlling the supply amount, the control means ,
Further characterized by controlling the driving speed of the processing mechanism section on the basis of the measurements from the sediment supply amount measuring means
It is in a self-propelled soil improvement machine. To achieve the above objectives
In addition, the present invention also provides a self-propelled soil improvement method for modifying sediment.
In a good machine, the body frame and the body frame
Track-type traveling means provided on both sides in the width direction and the main body frame
Installed in the dome and has an inlet and outlet for sediment
Mechanical part and one end is one side in the longitudinal direction of the main body frame
So that the other end faces the introduction part of the processing mechanism part.
Conveyor conveyor with an inclination and this conveyor
The earth and sand hopper provided above one end of the
Moisture absorption and reaction by contact with earth and sand above the other end of the bear.
Soil quality placed so that the soil improvement material supply port is located
Improvement material hopper and one end of the discharge mechanism of the processing mechanism unit
The lower end of the main frame in the longitudinal direction
To the body frame so that it extends to the outer position on one side.
The discharge conveyor provided and the longitudinal direction of the body frame, etc.
Machine room on one side and earth and sand on the conveyor
The supply amount measuring means and the body frame are provided, and
Based on the measured value from the earth and sand supply amount measuring means,
The amount of soil improvement material supplied to the soil on
And control means for controlling, the control means comprise a storage means for storing data relating to the supply amount of soil improvement agent from the supply means of the measured values with the soil improvement agent from the sediment supply amount measuring means Self-propelled soil improvement machine characterized by
On the machine. In order to achieve the above-mentioned object, the present invention also provides a self-propelled soil improvement machine for modifying soil, a main body frame, and crawler type traveling means provided on both sides in the width direction of the main body frame, A processing mechanism portion provided on the main body frame and having a sand introduction and discharge portion, and one end inclined toward one side in the longitudinal direction of the main body frame and the other end facing the introduction portion of the processing mechanism portion. With a conveyer provided with, the earth and sand hopper provided above one end side of the conveyer conveyor, and above the other end side of the conveyer conveyor, there is a supply port for a soil improvement agent that performs moisture absorption and reaction in contact with earth and sand. A soil improvement material hopper arranged so as to be positioned so that one end extends to a position below the discharge portion of the processing mechanism portion and the other end extends to an outer position on the other side in the longitudinal direction of the main body frame. The main body Discharge conveyor provided in the frame, a machine room provided on the other side in the longitudinal direction of the main body frame, earth and sand supply amount measuring means provided in the discharge conveyor, and the earth and sand supply amount measuring means provided in the main body frame. Control means for controlling the supply amount of the soil improvement material supplied to the soil on the conveyor based on the measured value from. Preferably, the control means includes a storage means for storing the measured value from the sediment supply amount measuring means and the data regarding the supply amount of the soil improvement material from the soil improvement material supply means.

Here, the conveying means may be constituted by, for example, a screw conveyer, but from the viewpoint of supplying the soil improvement material during conveyance, it has a conveying surface having a predetermined width such as a belt. A conveyor is preferably used. The earth and sand supply amount measuring means is arranged at any position from the earth and sand hopper to the discharge part of the improved soil, but when the conveyor is used as the conveying means in this way, the earth and sand supply amount measuring means is conveyed by this conveyor. It is desirable to configure it to measure the amount of sediment. The earth and sand hopper is provided with an earth and sand receiving port on the upper side, and the earth and sand is continuously or intermittently charged into this receiving port. Further, a supply port for supplying earth and sand to the conveying means is provided below. And, it is desirable to install a sieve for separating foreign matter from the input sand in the receiving port. A gate can be provided in the earth and sand hopper, which makes it possible to make the amount of conveyance by the conveying means uniform. The soil quality improving material supply means varies the amount of the soil quality improving material supplied according to the amount of the soil quality improving material conveyed. For this purpose, for example, a storage part for storing the soil quality improving material, and It is provided in the lower part, and is equipped with a rotary type fixed amount feeder and a drive means for rotationally driving this fixed amount feeder, and by changing the rotation speed of the fixed amount feeder by this drive means, Can be adjusted.

In the case of a conveyor using a belt as the conveying means, the belt is one that is bent by the weight of earth and sand (for example, a belt made of rubber) and one that is not deformed only by the weight of earth and sand (for example, made of steel). Belt). When a belt that bends due to the weight of earth and sand is used, the amount of earth and sand supplied can be detected as the weight based on the amount of bending of the belt. When a belt that does not bend is used, the height of the soil from the surface of the belt is measured. With this, the volume of the transported earth and sand can be measured.

Although the earth and sand hopper is arranged on the most upstream side in the conveying route by the conveying means, either the earth and sand supply amount measuring means or the soil improvement material hopper may be located on the upstream side. If the earth and sand supply amount measuring means is arranged in front of the soil improvement material hopper, that is, at a position close to the earth and sand hopper, only the earth and sand amount is measured by the earth and sand supply amount measuring means. On the other hand, when the soil improvement material hopper is positioned on the front side, the amount of the soil improvement material must be subtracted from the measurement result of the earth and sand supply amount measuring means. However, if the soil and the soil improving agent are brought into contact with each other at an early stage, the reaction between the soil and the soil improving agent will occur earlier by that amount, and when lime etc. is used as the soil improving agent, the water absorption from the soil will be absorbed. It will start earlier. Further, due to the structure of the supply unit, if there is no space in the space for providing the earth and sand supply amount measuring means on this supply side, the amount of the improved soil discharged from the treatment mechanism unit may be measured. It is possible.

Further, the treatment mechanism portion comprises a treatment tank having an introduction portion for introducing the earth and sand and the soil conditioner and a discharge portion for discharging the improved soil, and a plurality of rotating shafts are provided in the treatment tank. By installing the stirring blades intermittently or continuously and rotating the rotary shaft, it is possible to mix the earth and sand and the soil conditioner and transfer them from the introduction portion to the discharge portion. Further, the processing mechanism portion may be a processing mechanism of a type including a rotary disintegrator having a plurality of rotary impactors, the positions of which are changed in the vertical direction along a path through which the earth and sand and the soil conditioner drop by gravity.

[0016]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. 1 to 3 show the construction of the self-propelled soil improvement machine. First, in FIG.
Reference numeral 1 denotes a lower traveling body, and the lower traveling body 1 is configured to include a crawler type means having a pair of crawler belts 1a, 1a. The lower traveling body 1 shown in the figure is a crawler type traveling means. However, in consideration of the case where sediment is intermittently loaded, it is possible to prevent the entire vehicle body from becoming unstable due to impact load when depositing sand. This is to prevent it. Therefore, in the case where the earth and sand are continuously supplied by a conveyor or the like, it may be configured by a wheel type traveling body.

A main body frame 2 constituting a chassis is connected to the lower traveling body 1, and the main body frame 2 is provided.
Are equipped with various mechanisms and devices. In the main body frame 2, when the left side of FIG. 1 is the front of the machine, the supply unit 3 is arranged at the front position. Further, the processing mechanism section 4 is mounted on the rear side, and a discharging section 5 is provided further toward the rear side than the processing mechanism section 4. The discharge part 5 extends obliquely upward from the lower position of the processing mechanism part 4, and at the upper position of the processing mechanism part 4 on the rear side of the main body frame 2, the engine, the hydraulic pump, the direction switching valve. A machine chamber cover 6 including a machine such as a unit is provided, and the machine chamber cover 6 is fixedly held on the main body frame 2 by a column 6a.

The supply unit 3 is for supplying the earth and sand and the soil conditioner, and for measuring the amount of the earth and sand in order to adjust the mixing ratio of the earth and sand and the soil conditioner to be supplied. Has become. For this purpose, a transfer conveyor 10 as a transfer means is provided, and in the transfer direction of the transfer conveyor 10, the most upstream side, that is, the front side of the machine (more specifically, further
The earth and sand hopper 20 is provided above the front end of the conveyor 10.
However, the soil improvement hopper 30 is installed on the rear side which is the downstream side. Further, the amount of earth and sand conveyed by the conveyor 10 is measured, and the soil improvement material hopper 30 is measured according to the measured amount.
The amount of soil improvement material supplied from the company is adjusted.

The transfer conveyor 10 is supported by a support 7 provided so as to project forward from the main body frame 2. Here, the support 7 is the lowest at the base end side and is inclined so as to rise obliquely upward as it goes to the side where the main body frame 2 is continuously provided. Therefore, the conveyor 10 is also inclined obliquely upward from the front side. It has been extended with.

As is apparent from FIG. 4, the conveyer conveyor 10 has a conveyer belt 11 (shown by phantom lines), and the conveyer belt 11 is made of sheet rubber or the like, and when a load acts, the load acts on the load. A structure that is bent by an appropriate amount is used. Reference numeral 12 denotes a conveyor frame. At both ends of the conveyor frame 12, a rotary shaft 13 connected to a driving roller 13 and a driven roller 14 is provided.
a and 14a are rotatably connected to each other, and the conveyor belt 1
1 is wound around between the driving roller 13 and the driven roller 14. A hydraulic motor 15 is connected to the rotary shaft 13a provided with the drive roller 13. By rotating the rotary shaft 13a with the hydraulic motor 15, the drive roller 13 is driven to rotate and the conveyor belt 11 shown in FIG. It is designed to be sent in the direction of the arrow.

Guide plates 16 are provided on both left and right sides of the conveying surface of the conveying belt 11, and the conveying belt 1
It projects upward by a predetermined height from the transport surface of the No. 1 unit. Both of these guide plates 16 are for preventing lateral overflow when the earth and sand of a predetermined height are conveyed by the conveyor belt 11. Further, guide rollers 17 are provided on the conveyor belt 11 at predetermined pitch intervals in the conveyor direction. Further, the rotary shaft 14a on which the driven roller 14 is mounted is not directly connected to the conveyor frame 12, but can be adjusted via the tension adjusting means 18 so that the tension of the conveyor belt 11 can be kept constant. Has become. The tension adjusting means 18 is provided with means such as a load sensor for detecting the degree of tension of the conveyor belt 11 so that the tension of the conveyor belt 11 can be adjusted to a constant value. However, illustration of these specific configurations is omitted.

As shown in FIG. 5, the earth and sand hopper 20 has an earth and sand receiving portion 20a on the upper side and an earth and sand supplying portion 20b to the conveyor 10 on the lower side. In order to smoothly carry out the earth and sand loading work, the receiving opening that is opened at the upper end of the receiving portion 20a has a wide mouth, and the earth and sand are supplied to the conveyor 10 from the bottom of the supply portion 20b. Therefore, the supply port, which is the opening at the lower end of the supply unit 20b, has the same width as the belt 11 of the conveyor 10.
Or slightly smaller than that. The earth and sand hopper 20 is fixedly held on the main body frame 2 by the frame member 8.

On the side of the receiving portion 20a of the earth and sand hopper 20, foreign matter sieving means 21 including a sieve and a cage is attached. This sieving means 21 may be fixedly provided in the receiving portion 20a of the earth and sand hopper 20, but this receiving portion 20
It is preferable that the sieving means 21 is attached to a and is connected to the vibrating means so that the sieving means 21 is vibrated by the vibrating means. Therefore, this sieving means 2
1 allows the sand and sand to selectively pass therethrough, and prevents solid lumps and the like having a certain size or more from entering the earth and sand hopper 20. The receiving portion 20a of the earth and sand hopper 20 equipped with this sieving means 21 is inclined toward the side,
As a result, for example, using a bucket of a hydraulic excavator or the like, the earth and sand are thrown in from the front side of the earth and sand hopper 20, and the solid lumps that have not passed through the sieving means 21 are removed by rolling along the slope thereof. To be done. Therefore,
The lumpy solid matter separated from the earth and sand hopper 20 by the sieving means 21 does not mix with the place where the earth and sand to be charged is accumulated.

The earth and sand put into the earth and sand hopper 20 falls from the supply section 20b onto the conveyor belt 11 of the conveyor 10 by the action of its own weight. Then, by driving the conveyor belt 11, the earth and sand supplied from the earth and sand hopper 20 is conveyed. The amount of earth and sand conveyed by the conveyor belt 11 does not necessarily have to be adjusted, but as will be described later, the amount of earth and sand conveyed is detected to keep the mixing ratio with the soil improvement agent constant. For this reason, it is desirable to keep the mixing ratio constant by adjusting the carry amount so as not to change. From the above, again, the conveyor belt 11
Since the height level of the earth and sand above is regulated by the protruding height of the guide plates 16 protruding from both ends of the conveyor belt 11, it exceeds the protruding height position of the guide plate 16 at the lower end of the earth and sand hopper 20. A gate 22 having an opening area limited to a certain height is formed, and when the conveyor belt 11 is sent, it is conveyed in a state in which a volume of earth and sand corresponding to the height set by the gate 22 is accumulated. become. Further, in order to level the accumulated sediment on the conveyor belt 11 that has passed through the gate 22, a smoothing roller 24 having a claw 23 protruding from the outer peripheral surface is rotatably provided on the outlet side (sediment outflow side) of the gate 22. Has been. As a result, the height of the transported earth and sand is adjusted to be substantially constant.

Next, the soil improvement material hopper 30 is fixedly held by the main body frame 2 by the columns 9, and the construction thereof is as shown in FIGS. 6 to 9. The soil improvement material hopper 30 includes a storage portion 31 and a fixed amount supply portion 32. The storage portion 31 has a cylindrical portion 31a at a lower portion thereof, and a rectangular box portion 31b is continuously provided on an upper side thereof. A lid 33 is provided on the upper end of the rectangular box portion 31b, and the lid 33 is composed of two lid pieces 33a. Each lid piece 33a is designed to open outward, and in the fully opened state, each lid piece 33a is opened diagonally upward by a stopper having an appropriate configuration. The soil improvement material is stored in the flexible container 34, and the lid pieces 33a of the soil improvement material hopper 30 are opened.
By installing the flexible container 34 so as to enter the rectangular box portion 31b of the storage portion 31, the soil improvement material is supplied.

A cutter 35 with a cutting edge protruding upward is attached to a connecting portion of the cylindrical portion 31a and the rectangular box portion 31b in the storage portion 31 or a position in the vicinity thereof, and a flexible container 34 is provided in the soil improvement material hopper 30. When it is placed on the flexible container 34, its lower end portion is torn by the cutter 35 due to its own weight.
The soil improvement material therein, for example, lime, is supplied so as to flow into the storage portion 31, particularly the cylindrical portion 31a thereof. Then, as is clear from FIG. 7, since the cylindrical portion 31 a and the fixed quantity supply part 32 are communicated with each other by the communication hole 36, the soil improvement material is supplied into the fixed quantity supply part 32. Here, since the opening area of the communication hole 36 is relatively small with respect to the cross-sectional area of the cylindrical portion 31a, if the soil improvement material is fed into the fixed amount supply portion 32 by the action of its own weight, a bridge phenomenon or the like occurs. As a result, the soil improvement material cannot be sent smoothly. In consideration of this point, the rotating rod 37 is arranged in a cross shape near the bottom surface of the cylindrical portion 31a, and the rotating rod 37 is attached to the cylindrical portion 31a.
Is connected to a rotary shaft 39 which is rotatably driven by a hydraulic motor 38 provided in the lower part of the. As a result, by rotating the rotating rod 37, the soil improvement material in the storage section 31 is agitated and smoothly and reliably fed to the fixed quantity supply section 32.

The fixed quantity supply unit 32 has a casing 40 having a size approximately the same as the widthwise size of the conveyor belt 11 in the conveyor 10, and the lower end of the casing 40 has substantially the same length as the conveyor belt 11. Or, the soil quality improving material supply port 41 formed of a narrow hole slightly narrower than that is formed, and the soil quality improving material sent from the storage part 31 to the fixed amount supply part 32 is conveyed from the soil quality improving material supply port 41 to the conveyor belt. It is configured to supply to the earth and sand transported by 11.

The fixed quantity supply unit 32 is located after the conveyor 10.
It is installed at the upper position on the edge side so that the amount of soil improvement agent supplied can be adjusted. For this reason, as shown in FIGS. 8 and 9, the wall surfaces near the lower end of the casing 40 of the fixed quantity supply portion 32 where the soil improvement material supply port 41 is opened are arc-shaped wall surface portions 40a, 40a facing each other. A fixed amount supply feeder 42 is provided at a portion between the arc-shaped wall surface portions 40a, 40a. This fixed quantity feeder 42
The partition wall 44 is formed at a predetermined angle (every 90 ° in the case shown) on the rotary shaft 43 provided in a state of horizontally penetrating the portion near the lower end of the casing 40.
The V-shaped constant-quantity supply container portion 45 is formed between the adjacent partition walls. The width of the soil improvement material supply port 41 is equal to or smaller than the interval between the adjacent partition walls 44, 44, and the arc-shaped wall surface portion 40a is an arc of at least 90 ° or more. There is.

When the rotary shaft 43 is rotated, the tips of the respective partition walls 44 constituting the four fixed quantity supply container parts 45 are brought into sliding contact with the arc-shaped wall surface part 40a. Means to function as a scraping wall of each fixed quantity supply container part 45, and the fixed quantity supply feeder 42 is displaced from the state of FIG. 8 to the state of FIG. The soil improvement material is supplied onto the conveyor belt 11 in an amount corresponding to the volume of the fixed amount supply container section 45. Therefore, by adjusting the rotation speed of the rotating shaft 43, the amount of the soil improvement agent supplied from the constant amount supply unit 32 can be controlled. An electric motor 46 is attached to the outer surface of the casing 40 in order to finely control the rotation speed of the rotation shaft 43 of the fixed quantity feeder 42, and the electric power is transmitted between the electric motor 46 and the rotation shaft 43. Power transmission means 47 including a belt or the like is interposed.

The amount of the soil conditioner supplied is changed according to the amount of earth and sand conveyed by the conveyor belt 11. The amount of earth and sand conveyed by the conveyor belt 11 is adjusted by the gate 22 and the leveling roller 24 provided in the earth and sand hopper 20 so as to have a substantially constant volume. However, the amount of earth and sand conveyed is completely constant. Cannot be transformed. In order to detect the amount of earth and sand conveyed by the conveyor belt 11, the earth and sand supply amount measuring means 50 is provided, and the earth and sand supply amount measuring means 50 specifically detects the weight of the earth and sand conveyed. . For this reason, the earth and sand supply amount measuring means 50 is shown in FIGS.
It has the configuration shown in.

In these figures, 51 and 51 are fixedly supported by the conveyor frame 12, and the conveyor belt 1
A pair of fixed rollers that come into contact with the back surface of the first roller 1 and roll by the feeding thereof.
The area between them is the section for measuring the amount of sediment supply. The fixed rollers 51, 51 before and after which constitute this earth and sand supply amount measurement section
A weight measuring roller 52 is attached so as to come into contact with the back surface of the conveyor belt 11 at an approximately intermediate position therebetween. Here, as described above, the conveyor belt 11 is
In other words, the weight measuring roller 52 bends in accordance with the weight of the earth and sand deposited thereon, and the weight measuring roller 52 is for detecting the degree of bending of the conveyor belt 11.

The weight measuring roller 52 is connected to a swing plate 54 which is swingably supported by a bearing member 53 provided on the conveyor frame 12, and the other end of the swing plate 54 is connected to the swing plate 54. A load sensor 55 including a load cell or the like that constitutes the weight measuring means is provided in a linked manner. Therefore, when a predetermined amount of earth and sand is accumulated on the conveyor belt 11, the portion of the conveyor belt 11 on which the earth and sand is accumulated is conveyed to the earth and sand supply amount measurement section between the fixed rollers 51, 51. Then, the conveyor belt 11 bends so as to sink. As a result, the weight measuring roller 52 is pushed in the direction D of the arrow in FIG. 11, and the swing plate 54 connected to the weight measuring roller 52 tries to swing and move in the direction of the arrow U in the figure. The load on 55 is increased, and the amount of earth and sand conveyed by the conveyor belt 11 can be measured based on this detection signal.

Although the supply unit 3 is constructed as described above, the earth and sand hopper 20 needs to be arranged on the most upstream side in the conveying direction of the conveyor 10, but the earth and sand supply amount measuring means 50 and the soil quality improving material hopper are required. Any of 30 may be arranged on the front side. Since the earth and sand supply amount measuring means 50 measures the earth and sand supply weight, the soil improvement material hopper 3
It is rational to measure from 0 before the soil improvement material is supplied. However, the amount of the soil quality improving material supplied from the soil quality improving material hopper 30 is controlled by the constant quantity supply feeder 42, and therefore the amount is known. Therefore, the earth and sand supply amount measuring means 50 can obtain the earth and sand weight by subtracting the supply amount of the soil conditioner from the measured weight. Also, if the weight measurement position of the sediment is rearward, the supply amount control of the soil improvement material will be delayed by that amount, but there will be some control delay because the soil and the soil improvement material are agitated and mixed later. However, there is nothing to support it. Rather, when the soil improving material is supplied at a position immediately after the earth and sand is supplied, each action of moisture absorption and reaction due to the contact of the soil improving material with the earth and sand starts early, and the soil and sand supply amount measuring means 50 measures it. It is advantageous in that it promotes moisture absorption and reaction during the transportation by the transportation conveyor 10 including the time during which the transportation is performed. As described above, either the sediment supply amount measuring means 50 or the soil improvement material hopper 30 may be disposed on the front side.

As described above, the earth and sand and the soil conditioner are conveyed by the conveyor belt 11 which constitutes the conveyor 10. The end of the conveyor 10 is connected to the processing tank 60 which constitutes the processing mechanism section 4. Has been done. The processing tank 60 is installed on the main body frame 2 and is arranged at a predetermined height position, and the earth and sand and the soil conditioner are supplied from above from the conveyor 10. For this reason, the transfer conveyor 10 needs to be located at a considerably high place.
When the conveyer conveyor 10 is provided horizontally and the earth and sand hopper 20 is installed on it, the earth and sand input portion is at a very high position. The transfer conveyor 10 is fixed to a support 7 extending from the main body frame 2, and the support 7
It is for this reason that it is extended obliquely upward from the above, whereby the earth and sand hopper 20 located on the most upstream side of the transfer conveyor 10 can be arranged at a low position, which facilitates the introduction of earth and sand. I have to.

Next, FIGS. 12 to 15 show the structure of the processing tank 60 constituting the processing mechanism section 4. The processing tank 60 is shown in FIG.
As is clear from FIG. 2, the tank body 60a is composed of a rectangular container which is elongated in the longitudinal direction of the main body frame 2, that is, the traveling direction of the lower traveling body 1.
The upper part of 0a is opened over a considerable area, and the lid 60b can be fixed to the opening by bolts or the like. Further, the side portion (one side or both sides) of the tank body 60a can be opened and closed by an opening / closing door 61. In addition, an introducing cylinder 62 that constitutes an introducing portion is provided on the front upper portion of the processing tank 60 so as to face the rear end of the transport conveyor 10.
In addition, a discharging cylinder 63 that constitutes a discharging portion is connected to the lower portion on the rear side. 13 to 15
As shown in FIG. 2, two paddle mixers 64 are provided in parallel in the processing tank 60. The paddle mixer 64 has a rotating shaft 65, and a large number of paddles 66, which are blades intermittently provided as a stirring and transferring member, are planted on the rotating shaft 65 while changing their positions in the front-rear direction and the rotating direction. By rotating the rotating shaft 65, the paddle 66 is rotationally driven to agitate the inside of the processing tank 60, and the processing tank 60 is agitated.
The earth and sand introduced therein and the soil improvement material are agitated and uniformly mixed. Here, the paddle 66 is the rotary shaft 6
5, the paddle body 66b is fixed to the support rod 66a fixedly provided on the plate 5 with bolts 66c, and when the paddle body 66b is worn, it can be easily replaced.

Since the processing tank 60 is installed on the main body frame 2 together with other equipment, its longitudinal dimension is restricted, and the paddle 66 efficiently stirs and mixes in this restricted container. It is for doing. Both ends of each of these paddle mixers 64 are rotatably supported by bearings 67, 67, and the tip end portions of their rotary shafts 65 are shown in FIG.
As shown in FIG. 3, it extends into the housing of the drive unit 68 provided at the front end of the processing tank 60. A transmission gear 69 is connected to the tip of each rotary shaft 65, and both transmission gears 6
9,69 are in mesh with each other. A drive gear 71 connected to the output shaft of the hydraulic motor 70 is provided on one transmission gear.
Are engaged with each other, and by rotating and driving this hydraulic motor 70, both rotary shafts 65 provided with paddles 66,
65 can be simultaneously driven to rotate in mutually opposite directions. Further, a guide plate 72 is attached to the bottom of the treatment tank 60, and the guide plate 72 prevents sediment and soil improvement material from staying at the corners of the lower end of the treatment tank 60. . The portion of the guide plate 72 corresponding to the discharge cylinder 63 is open.

As a result, in the treatment tank 60, the earth and sand introduced from the introducing cylinder 62 and the soil-improving material are evenly stirred and mixed by the action of the paddle 66, and toward the discharging cylinder 63. Improved soil is produced during transport. The improved soil produced in this manner is discharged from the discharge cylinder 63 to the discharge portion 5 by its own weight. The discharging unit 5 is composed of a discharging conveyor 73. The discharging cylinder 63 is the processing tank 60.
Since it is located below, the discharge conveyor 73 is located below the discharge cylinder 63 (specifically , the discharge conveyor 73).
The front end of 73 is located below the discharge cylinder 63) . However, if the discharge conveyor 73 is extended straight as it is, the improved soil cannot be deposited high. Therefore, the rear end of the discharge conveyor 73 should be slanted and extended upward to the rear outside position of the main body frame 2. The modified soil is dropped from a predetermined height position. Here, when lime is used as the soil improvement material, the improved soil produced by uniformly mixing the lime and the earth and sand has an aggregate structure. When the improved soil is conveyed obliquely upward by the discharge conveyor 73, the inclination angle is restricted in order to smoothly convey the improved soil. Therefore, in order to deposit the improved soil from the predetermined height position, the length of the discharge conveyor 73 becomes long.
Therefore, by making the front end side of the discharge conveyor 73 bendable by a predetermined length, the overall length of the soil improvement machine can be shortened. For this purpose, the discharge conveyor 73 is formed as a fixed portion 73a on the side connected to the processing tank 60, and a tip end of the fixed portion 73a is composed of a bent portion 73b rotatable by a link mechanism 74 in the arrow direction of FIG. ing. The bent portion 73b can be displaced by a driving means such as a hydraulic cylinder into an operating state shown by a solid line in the figure and a bent state shown by a virtual line.

By configuring as described above, FIG.
As shown in FIG. 6, a hydraulic excavator PS is used as a means for adding earth and sand, the earth and sand to be treated accumulated in a predetermined yard is scooped with the bucket B, and the earth and sand hopper provided in the supply section 3 of the soil improvement machine. The soil improving agent is supplied from the soil improving material hopper 30 and added to the soil while the soil is transferred from the earth and sand hopper 20 by the transfer conveyor 10. Then, a mixture of the earth and sand and the soil conditioner is fed into the treatment tank 60 from the end of the conveyer conveyor 10 through the introducing cylinder 62, and the paddle mixer 64 provided in the treatment tank 60 acts to allow the earth and sand and the soil conditioner to be improved. And are moved to the position of the discharge cylinder 63 while being stirred and mixed. Then, the soil and the soil improving material are uniformly mixed in the treatment tank 60 to produce the improved soil in the aggregated state. The improved soil is deposited at a predetermined position from the discharging cylinder 63 via the discharging conveyor 73.

When earth and sand are taken into the soil improvement machine from the accumulation portion, a space is generated at that portion. If the improved soil is sequentially deposited in this space, most of the deposition sites in the yard can substantially serve as the sediment deposition site and the improved soil deposition site. As a result, the yard space can be effectively utilized. It is for this reason that the soil improvement machine can be self-propelled by the lower traveling body 1, and the lower traveling body 1 is operated in response to the progress of the work and the receding place of the earth and sand to improve the soil quality. Try to move the machine.

As described above, when the manufactured improved soil is deposited on the discharge conveyor 71 at a predetermined position, it may be directly deposited on the depositing place, but the improved soil has an aggregate shape. Therefore, it may be desirable to classify according to the particle size. For this purpose, as shown in FIG. 16, the sorting device 75 is installed at a predetermined location in the yard. The sorting device 75 includes a sieve 76 and a transfer conveyor 77. The sieve 76 has a length of, for example, 13 m.
It is preferable that the mesh size is such that m or less, 20 mm or less, and 25 mm or less, which has a predetermined particle size or less, and a vibrating screen. Then, it passes through the sieve 76, and the improved soil having a uniform particle size is deposited on a predetermined deposition location by the transfer conveyor 77. Also, sieve 76
Since the improved soil with a large particle size that did not pass through is also of the same quality in that it has been solidified, this improved soil with a large particle size is either as it is or after a treatment to make the particle size uniform. It will be used as a material for backfilling.

In order to improve the quality of the improved soil produced as described above, first, as a pretreatment, when the earth and sand contain rocks, brick pieces, concrete pieces, etc., and also metals and other foreign matters. , These foreign substances are separated and removed. The sieving means 21 mounted on the earth and sand hopper 20 is for sieving such foreign matters, and the operation of the sieving means 21 causes only the earth and sand to enter the earth and sand hopper 20.
The foreign matter that has been taken in and has not passed through the sieving means 21 is smoothly discharged to the outside along its inclination. Therefore, the upper portion of the earth and sand hopper 20 is covered with the foreign matter, which does not hinder the operation of inserting the earth and sand.

Next, in order to make the quality of the improved soil constant, that is, to set the degree of solidification within a predetermined range, the mixing ratio of the earth and sand and the soil improvement agent is accurately adjusted.
Here, depending on the nature of the earth and sand, the degree of solidification due to the addition of the soil improvement agent may vary. Therefore, the desired mixing ratio is determined in advance by experiments or the like. The mixing ratio of the earth and sand and the soil improvement agent may be set as a volume ratio or a weight ratio. Considering the relationship with the density and viscosity of earth and sand, it is desirable to set the mixing ratio as a weight ratio. In addition, when the sand B is loaded by the bucket B of the hydraulic excavator PS, since the load is intermittent, the storage amount of the soil in the sediment hopper 20 changes, and the soil that passes through the gate 22 is changed accordingly. Even if the bulk of the earth and sand conveyed by the conveyor 10 is made uniform by leveling with the leveling roller 24, the density and the like change based on the fluctuation of the pressure in the earth and sand hopper 20. Further, just because the gate 22 and the leveling roller 24 are provided, a certain amount of earth and sand is not always conveyed by the conveyor 10. For example, depending on the amount of earth and sand stored in the earth and sand hopper 20, only the earth and sand below the gate 22 may be transported.

The earth and sand supply amount measuring means 50 is used for the earth and sand hopper 2.
The weight of the earth and sand sent out from 0 is measured.
In the earth and sand supply amount measuring means 50, the weight of the earth and sand conveyed along the conveyor 10 is directly detected by detecting the load acting on the weight measuring roller 52 with the load sensor 55. Then, the soil improving material is supplied from the soil improving material hopper 30 at a position on the downstream side of the earth and sand supply amount measuring means 50 in the transport conveyor 10, and the amount of the soil improving material supplied is a constant amount which constitutes the fixed amount supply unit 32. It can be adjusted by the rotation speed of the supply feeder 42. Therefore, the electric motor 46 is controlled on the basis of the signal from the load sensor 55 to adjust the rotation speed of the constant quantity supply feeder 42 and change the supply amount of the soil improvement material. As a result, even if the amount of earth and sand conveyed by the conveyor 10 changes, the mixing ratio of the earth and sand and the soil improvement agent can be made constant.

While the earth and sand supply amount measuring means 50 detects the weight of earth and sand, the soil improvement material hopper 30
The amount of the soil improvement agent supplied from the plant is controlled by the rotation of the constant amount feeding feeder 42.
That volume is subject to control. However, the soil improvement material hopper 30 is composed of a storage part 31 and a fixed amount supply part 32, and the space between them is communicated via a communication hole 36 and the storage part 3 is provided.
The inside of 1 is agitated by constantly rotating the rotating rod 37. Therefore, since a fixed amount of soil improvement material is always accommodated in the fixed amount supply part 32 and constitutes a chamber separate from the storage part 31, it is affected by the storage amount of the soil improvement material in the storage part 31, Fixed quantity feeder 42
There is no substantial change in the weight per unit volume of the soil improvement material supplied in.

From the above, the mixing ratio of the earth and sand transported by the conveyor 10 and the soil improver supplied from the soil improver hopper 30 should be the weight ratio of the soil and the soil improver obtained by experiment. It can be controlled accurately. As a result, the improved soil produced has a degree of solidification within a predetermined range, and therefore has a very high quality. In addition, for example, when the earth and sand are continuously fed into the earth and sand hopper 20, it is possible to detect the amount of the earth and sand conveyed by the volume.
For this purpose, for example, a belt having a high rigidity such as a steel belt which does not bend depending on the state of earth and sand conveyance is used as the conveyor 10, and the leveling roller 24 is movable in the vertical direction. By detecting the height position of 24, it is also possible to function as a sediment supply amount measuring means for detecting the amount of sediment carried on the conveyor 10. When the earth and sand supply amount measuring means is configured in this way, the leveling roller 24 may function as a height measuring device, and the supply amount of the soil improvement material may be changed according to the detected height.

The quality of the improved soil also largely depends on the degree of mixing of the soil and the soil conditioner. The reason why the processing tank 60 having the paddle mixer 64 built therein is used is to stir and mix the earth and sand and the soil conditioner as uniformly as possible.
Two paddle mixers 64 are provided in the processing tank 60, and as shown by the arrows in FIG. 15, they rotate in mutually opposite directions. Therefore, inside the processing tank 60, a swirling flow is formed over almost the entire area by the shearing and stirring action of the paddle 66 attached to the rotating shaft 65 of the paddle mixer 64, and as a result, the entire inside of the tank is thoroughly stirred, The sand and soil and the soil conditioner will be mixed uniformly. Further, since the paddle 66 is oriented obliquely with respect to the axis of the rotary shaft 65, the mixture of earth and sand and the soil conditioner is transferred toward the discharge cylinder 63 while being stirred at a speed according to the angle. It Therefore, during this period, poor soil is converted into good quality improved soil. Since the inside of the treatment tank 60 is a substantially closed space except for the introducing cylinder 62 and the discharging cylinder 63, the soil improving material and the earth and sand are surrounded by the paddle 66 during stirring. There is no danger of scattering.

It is necessary to more efficiently agitate and mix the earth and sand and the soil conditioner in the treatment tank 60. For this,
The paddle 66 of the paddle mixer 64 is kept in a state where shearing of the sand and agitation of the soil and the soil-improving material can be always performed efficiently. If the sand and sand adhere to the paddle 66 and stick to it, the efficiency of shearing and stirring will decrease. Two paddle mixers 6
No. 4 has one paddle 66 extending to a position close to the partner's rotating shaft 65, and the paddles 66 provided on both paddle mixers 64, when viewed from the axial direction of the rotating shaft 65,
They are in a state of substantially overlapping each other. Therefore, even if the earth and sand adhere to the surface of the paddle 66 during operation of the paddle mixer 64, the earth and sand adhered by the relative rotation of the mating paddle 66 will be scraped off, and as a result, a self-cleaning action will be exerted. The stirring efficiency of the paddle 66 can be kept good.

After the soil improvement treatment is completed, the lid 60b in the treatment tank 60 is separated and the tank body 60a is separated.
Opening the top of the door or opening / closing door 61 on its side
By opening, the earth and sand adhering to the paddle 66 can be easily removed, and the maintainability is improved. Therefore, by performing this work at an appropriate frequency, it is possible to maintain the state in which the paddle mixer 64 can be operated smoothly and efficiently. The paddle 66 is worn due to friction with the sand and the like and the stirring efficiency is reduced for a long period of time, but since the paddle body 66b is substantially worn, the paddle body 66b worn by removing the bolt 66c is worn.
Can be easily replaced.

By the way, when the viscosity of the earth and sand sent into the treatment tank 60 is low, it is better to allow the earth and sand to stay in the treatment tank 60 for as long as possible and slowly stir the reaction between the earth and sand and the soil conditioner. Can be promoted. Therefore, when treating low-viscosity earth and sand, the paddle mixer 6
It is desirable to rotate 4 at a low speed. On the other hand, when processing the highly viscous earth and sand, if the rotation speed of the paddle mixer 64 is slowed, the earth and sand will be attached to the paddle 66,
Not only will the rotation of the paddle mixer 64 be hindered, but in extreme cases, it may become locked. Therefore, the higher the viscosity of earth and sand, the more paddle mixer 6
It is necessary to rotate 4 at high speed.

The earth and sand supplied from the conveyor 10 are
Since the weight is adjusted by the gate 22 and the leveling roller 24 so as to have a constant volume, and the weight of the sediment supply amount measuring means 50 is detected, the weight measurement from the sediment supply amount measuring means 50 is performed. The bulk density of the soil can be known based on the signal. That is, if the soil has the same property, the higher the viscosity, the higher the bulk density. Therefore, based on the measurement signal from the earth and sand supply amount measuring means 50, the rotation speed of the hydraulic motor 70 that rotationally drives the paddle mixer 64 is high when the viscosity of the earth and sand is high, and when the viscosity of the earth and sand is low. It can be controlled to rotate at a low speed.

A controller 80 as shown in FIG. 17 is provided to control the drive of the soil improvement machine as a whole. The controller 80 takes in signals from each sensor and detector constituting the machine and outputs control signals to each section. The controller 80 includes a data input unit 81 that performs input processing of various signals, a data conversion unit 82 that performs processing such as signal amplification and A / D conversion, and predetermined calculation and comparison based on the input data. And a data processing unit 83 for performing signal processing of the above, and a control signal for controlling controlled means such as a hydraulic actuator or a control valve is output based on the signal processed by the data processing unit 83. As this control signal, a signal for controlling the operation of each controlled means is output through the data output unit 85 via the data conversion unit 84 that performs data conversion such as D / A conversion.

Therefore, the signal from the load sensor 55 constituting the earth and sand supply amount measuring means 50 is sent to the controller 80.
The electric motor 46 for driving the constant quantity supply feeder 42 of the constant quantity supply section 32 in the soil improvement material hopper 30 is controlled based on the mixing ratio preset in the controller 80, and the constant quantity supply is performed. The amount of soil improvement material supplied from the section 32 is adjusted. Further, since the rotation speed of the paddle mixer 64 in the processing tank 60 is also controlled by the signal from the load sensor 55,
The controller 80 also outputs a control signal to the hydraulic motor 70 for driving the paddle mixer 64.

Various data at the time of executing the soil improvement processing work are taken in the internal memory 86, and the various data stored in these memories 86 are transferred via the I / O processing section 87. For example, by downloading the data to the personal computer 88, the data required by the personal computer 88 is processed according to a predetermined algorithm, and then the data is stored in the external storage device 89 connected to the personal computer 88. As described above, the personal computer 88 stores the data for storing and managing various data relating to the soil improvement treatment.

Therefore, in order to enhance the reliability of the soil improvement treatment, it is preferable to save the data in which the treatment procedure and the like are recorded so that the performance record of the soil improvement treatment can be analyzed at a later date. In particular, the total amount of treated soil,
It is necessary to save the data on the mixing ratio of sediment and soil improvement material. Moreover, at least the mixing ratio must be time-series data because of continuous processing. Therefore, in the memory 86 attached to the controller 80, at least the output signal from the load sensor 55 that constitutes the sediment supply amount measuring means 50 and the data regarding the rotation speed of the fixed amount supply feeder 42 by the electric motor 45 are time-series. Make sure to capture and store it. This gives accurate data on the mixing ratio of sediment and soil conditioner. Further, it is in the treatment tank 60 that the improved soil is actually manufactured. In this processing tank 60,
By operating the paddle mixer 64, the sand and soil and the soil conditioner are stirred, mixed, and transferred. The rotation speed of the paddle mixer 64 is also changed depending on the viscosity of the soil to be processed. Therefore, data regarding the rotation speed of the paddle mixer 64 is also acquired. This makes it possible to record the whole situation of soil improvement treatment.

Therefore, when the work is completed, these data can be downloaded to the personal computer 88 by connecting the personal computer 88 via the I / O processing section 87 of the controller 80, and further the personal computer 88 can be downloaded. By storing the data in a storage device 89 attached to 88, for example, a nonvolatile memory such as a flexible magnetic disk, a magneto-optical disk, and a memory card, it becomes convenient to store, analyze, and verify the data, and to improve the soil. It is a very convenient material for verifying the quality of.

By the way, the conveyor 10 is a processing tank 60.
Since the earth and sand and the soil improving agent are supplied from the upper position, the soil improving agent hopper 30 is arranged at a higher position than the treatment tank 60 in the main body frame 2, and when the volume thereof is increased, the main body frame 2 is increased by that amount. It will protrude significantly upward. Further, the machine room 6 also needs a certain size in the height direction depending on the equipment provided therein. In order to compactly arrange the soil improvement material hopper 30 and the machine room 6 on the main body frame 2, as shown in FIG. 1, these mechanisms are arranged above the processing tank 60. The treatment tank 60 is for carrying out stirring and mixing while transporting the earth and sand and the soil conditioner in the horizontal direction, so the treatment tank 60 is long in the horizontal direction, but the size in the height direction is too large. do not have to. Therefore, soil improvement material hopper 3
0 and the size of the machine room 6 in the height direction can be shortened. Also,
The discharge conveyor 73 is provided with a bent portion 73b, and this bent portion 73b is located at the highest position on the main body frame 2. In the structure of FIG. 1, the bent portion 73b is the same as the upper end of the soil improvement material hopper 30 or By bending at a low position, the height dimension of the discharge conveyor 73 can be shortened.

When the soil improvement treatment is carried out in a small yard, the soil improvement machine is carried into a plurality of yards to perform the soil improvement treatment. Therefore, soil improvement machines must be loaded on trailers and transported from yard to yard. Since there are guards, pedestrian bridges, and the like on this transportation route, the height of the soil improvement machine is restricted when the transportation is carried on the trailer. As described above, the use of the treatment tank 60 that does not require a large size in the height direction makes it possible to suppress the height size of the soil improvement machine, resulting in convenient transportation on a trailer. .

However, if the height dimension of the soil improvement machine is not taken into consideration, it is possible to use, for example, the crushing type processing mechanism shown in FIG. This processing mechanism has a plurality of (for example, three) rotary striking members 9 at different positions in the vertical and front-rear directions from the rotary cutter 92 in a housing 91 that opens at the end of a conveyor 90 that constitutes a supply unit.
3 is provided, and the housing 91
A discharge conveyor 94 is provided in the lower part of the.

Although not shown in the figure, the above-mentioned transport conveyor 90 is provided with a sediment hopper, a sediment supply amount measuring means and a soil improvement material hopper from the upstream side in the transport direction. The soil improvement material is detected and the soil improvement material is supplied from the soil improvement material hopper in an amount corresponding to the transportation quantity. There is no particular difference in this configuration from the supply unit 3 shown in FIG.

When the earth and sand and the soil conditioner are conveyed to the end position of the conveyor 90, the earth and sand are sheared by the rotary cutter 92 and fall by their own weight. The rotary striking member 93 provided in the middle of this drop is one in which a large number of striking projections 93b are provided on the outer peripheral surface of the rotary shaft 93a, and the rotary shafts 93a are each rotated in the direction of the arrow shown. As a result, the earth and sand and the soil conditioner that fall from the conveyor 90 by their own weight are crushed by being hit by the hitting protrusions 93b during the fall, and the earth and sand and the soil conditioner are mixed. Here, in this disintegration method, unlike the above-mentioned stirring and mixing of the soil and the soil improving agent by the paddle mixer 64 in the treatment tank 60, the soil improving agent is finely crushed by hitting and then the soil improving agent is mixed. is there. Therefore, although the soil-improving material varies to some extent, the impact on the impact sand 93b prevents the impact dust 93b from sticking to the impact sand 93b, thus ensuring stable operation and easy maintenance.

When a crushing mechanism is used as the treatment mechanism instead of the treatment tank 60, it is necessary to increase the chances of hitting the earth and sand as much as possible while the earth and sand fall by its own weight. Therefore, the size of the processing mechanism in the height direction becomes considerably large as compared with the case where the processing tank 60 is used. However, if the soil improvement material hopper is detachable, or if it is arranged at a position other than the upper part of the machine room processing mechanism, the above-mentioned problem of height limitation during transportation can be avoided.

As described above, in order to measure the amount of earth and sand to be supplied, whether the treatment mechanism is a continuous treatment system using a paddle mixer or a crushing mechanism is used. In addition, the earth and sand supply amount measuring means 50 is located in front of the processing mechanism, but depending on the structure of the conveyor 10, the earth and sand supply amount measuring means may not be provided at this portion. In this case, the discharge conveyor 73 is provided with a means for measuring the amount of sediment supply.

[0063]

As described above, according to the present invention, the transport co
The amount of earth and sand transported by the conveyor or discharge conveyor is measured, and the amount of soil improvement agent supplied is determined based on this measurement result.
Since it has a controllable structure, it is possible to control the mixing ratio of the soil and the soil improvement agent extremely accurately when performing the soil improvement by adding the soil improvement agent to the soil, and to stably produce a high quality soil improvement agent. There is an effect such as being able to.

[Brief description of drawings]

FIG. 1 is a front view of a self-propelled soil improvement machine showing an embodiment of the present invention.

FIG. 2 is a plan view of FIG.

FIG. 3 is a left side view of FIG.

FIG. 4 is a structural explanatory view of a conveyor according to the present invention.

FIG. 5 is a sectional view of the earth and sand hopper of the present invention.

FIG. 6 is a sectional view of a soil improvement material hopper of the present invention.

7 is a sectional view taken along line XX of FIG.

FIG. 8 is an operation explanatory view of the fixed amount supply mechanism of the present invention.

FIG. 9 is an operation explanatory view of the constant quantity supply mechanism showing an operation state different from that of FIG. 8;

FIG. 10 is a structural explanatory view of the means for measuring the amount of sediment supply of the present invention.

FIG. 11 is an explanatory view of the principle of the measurement of the supply amount of earth and sand according to the present invention.

FIG. 12 is an external view of a processing tank in which the paddle mixer of the present invention is omitted.

FIG. 13 is a cross-sectional view of the processing tank of the present invention.

14 is a cross-sectional view taken along line YY of FIG.

FIG. 15 is a sectional view taken along line ZZ of FIG.

FIG. 16 is an operation explanatory view showing a state where soil improvement is performed in the yard by the soil improvement machine of the present invention.

FIG. 17 is a block diagram showing a control device of the soil improvement machine of the present invention.

FIG. 18 is a structural explanatory view of a crushing mechanism as another example of the processing mechanism of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Lower traveling body 2 Main frame 3 Supply section 4 Processing mechanism section 5 Discharging section 10 Conveyor 20 Sediment hopper 21 Sieving means 22 Gate 24 Leveling roller 30 Soil conditioner hopper 32 Constant quantity supply section 37 Rotating rod 42 Constant quantity supply feeder 46 Electric motor 50 Sediment supply amount measuring means 51 Fixed roller 52 Weight measuring roller 55 Load sensor 60 Processing tank 64 Paddle mixer 66 Paddle 70 Hydraulic motor 73 Discharging conveyor 80 Controller 86 Memory 88 Personal computer 90 Conveying conveyor 91 Housing 92 Rotating cutter 93 Rotating impacting means 94 discharge conveyor

─────────────────────────────────────────────────── ─── Continuation of the front page (72) Hideki Fukuzawa, Inventor Hideki Fukuzawa 5-14-2 Kanayama, Naka-ku, Aichi Prefecture Odai Construction Co., Ltd. Construction Machinery Co., Ltd., Tsuchiura Plant (72) Inventor Toshikazu Murai, 650 Kintatemachi, Tsuchiura, Ibaraki Prefecture Hitachi Construction Machinery Co., Ltd. At the Tsuchiura Plant (72) Inventor Fumiki Nakagiri 2-6-2 Otemachi, Chiyoda-ku, Tokyo Hitachi Construction Machinery Co., Ltd. (72) Inventor Tetsushiro Miura 2-6-2 Otemachi, Chiyoda-ku, Tokyo Hitachi Construction Machine Co., Ltd. (72) Inventor Yasuharu Yamamoto 2-6-2 Otemachi, Chiyoda-ku, Tokyo Inside Hitachi Construction Machinery Co., Ltd. (72) Inventor Kiyonobu Hirose 650 Kintate-cho, Tsuchiura-shi, Ibaraki Prefecture Address Hitachi Construction Machinery Co., Ltd., Tsuchiura Plant (56) References JP-A-9-195265 (JP, A) JP-A-7-11667 (JP, A) (58) Fields investigated (Int.Cl. ⁷ , DB) Name) E02F 7/00

Claims (4)

(57) [Claims] 1. A self-propelled soil improvement machine for modifying sediment, comprising: a main body frame; crawler type traveling means provided on both sides in the width direction of the main body frame; A processing mechanism section having an introduction section and a discharge section; a conveyor conveyer having one end on one side in the longitudinal direction of the main body frame and the other end inclined so as to face the introduction section of the processing mechanism section; Soil and sand hopper provided above one end side of the conveyor, and above the other end side of the conveyor, soil improvement that is arranged so that the supply port of the soil improvement material that comes into contact with the soil to absorb and react A material hopper and a discharge conveyor provided on the main body frame so that one end thereof extends below the discharge portion of the processing mechanism portion and the other end extends to an outer position on the other side in the longitudinal direction of the main body frame. A machine room provided on the other side in the longitudinal direction of the main body frame, a sediment supply amount measuring means provided on the conveyor, and a machine room provided on the main body frame, based on a measurement value from the sediment supply amount measuring means. and control means for controlling the supply amount of the soil improvement agent supplied to the soil on the conveyor, the sediment supply amount measuring means, sediment from the soil hopper
A sand leveling roller that can be moved up and down at the exit side
Height detection hand to detect the height position of the soil leveling roller
A self-propelled soil improvement machine characterized by consisting of steps . 2. A self-propelled soil improvement machine for modifying soil.
In the main body frame, the track type runners provided on both sides in the width direction of the main body frame.
A step, and an inlet and outlet for earth and sand provided on the body frame
And a processing mechanism portion having one end on one side in the longitudinal direction of the body frame and the other end.
Is inclined so that it faces the introduction part of the processing mechanism part.
And a hopper provided above one end of the conveyor.
And above the other end of the conveyor, contacting the earth and sand and absorbing
So that the supply port of soil improvement material that performs wetness and reaction is located
The soil improvement material hopper that has been placed, and one end of which is located below the discharge portion of the processing mechanism portion,
One end to the outer position on the other longitudinal side of the body frame.
The discharge container installed on the main frame so that
A, a machine room provided on the other side in the longitudinal direction of the main body frame, a sediment supply amount measuring means provided on the conveyor, and a sediment supply amount measuring means provided on the main body frame
Based on the measured values from the
Control means for controlling the supply amount of the soil improvement material to be supplied,
The control means further comprises:
Control the drive speed of the processing mechanism section based on the measured value
A self-propelled soil improvement machine characterized by that. 3. A self-propelled soil improvement machine for modifying soil.
In the main body frame, the track type runners provided on both sides in the width direction of the main body frame.
A step, and an inlet and outlet for earth and sand provided on the body frame
And a processing mechanism portion having one end on one side in the longitudinal direction of the body frame and the other end.
Is inclined so that it faces the introduction part of the processing mechanism part.
And a hopper provided above one end of the conveyor.
And above the other end of the conveyor, contacting the earth and sand and absorbing
So that the supply port of soil improvement material that performs wetness and reaction is located
The soil improvement material hopper that has been placed, and one end of which is located below the discharge portion of the processing mechanism portion,
One end to the outer position on the other longitudinal side of the body frame.
The discharge container installed on the main frame so that
A, a machine room provided on the other side in the longitudinal direction of the main body frame, a sediment supply amount measuring means provided on the conveyor, and a sediment supply amount measuring means provided on the main body frame
Based on the measured values from the
Control means for controlling the supply amount of the soil improvement material to be supplied,
And the control means is a measurement value from the earth and sand supply amount measuring means.
And the amount of soil improvement material supplied from the soil improvement material supply means
And a storage means for storing data regarding
A self-propelled soil improvement machine to collect. 4. A self-propelled soil improvement machine for modifying sediment, comprising: a main body frame; crawler type traveling means provided on both sides in the width direction of the main body frame; A processing mechanism section having an introduction section and a discharge section; a conveyor conveyer having one end on one side in the longitudinal direction of the main body frame and the other end inclined so as to face the introduction section of the processing mechanism section; Soil and sand hopper provided above one end side of the conveyor, and above the other end side of the conveyor, soil improvement that is arranged so that the supply port of the soil improvement material that comes into contact with the soil to absorb and react A material hopper and a discharge conveyor provided on the main body frame so that one end thereof extends below the discharge portion of the processing mechanism portion and the other end extends to an outer position on the other side in the longitudinal direction of the main body frame. A machine room provided on the other side in the longitudinal direction of the main body frame, a sediment supply amount measuring means provided on the discharge conveyor, and a main body frame provided on the basis of a measurement value from the sediment supply amount measuring means. A self-propelled soil improvement machine comprising: a control unit that controls a supply amount of the soil improvement material that is supplied to the earth and sand on the conveyor. [Requirement 5] The control means includes a storage means for storing the measured value from the soil supply amount measuring means and data relating to the supply amount of the soil improving material from the soil improving material supplying means. A self-propelled soil improvement machine according to claim 4 .