KR100403753B1 - Automotive soil treating machine - Google Patents

Abstract

A passenger vehicle soil processor comprising a main frame for supporting the soil supply stage, the vehicle driving means being provided, the soil supply stage comprising at least one soil hopper and additive hopper for supplying soil and additional soil improving material. The stage includes a soil treatment container provided with a mixing means therein for mixing soil and additives while being transferred from one end of the soil treatment container to the other end, and the soil release stage transfers the treated soil of improved properties in a predetermined direction. Includes a release conveyor. The soil treatment container has an inlet opening located at the upper side of its front portion for accommodating soil and additional materials, and an outlet opening located at the bottom side of its rear portion to discharge the treated soil of improved properties towards the discharge conveyor. Is provided.

Description

Soil handler with traveling means {AUTOMOTIVE SOIL TREATING MACHINE}

The present invention relates to a soil treatment machine mainly used for soil treatment aimed at reinforcing the foundation of soft ground by improving soil structure or soil so as to be suitable for a particular purpose of use, in particular, on the surface of the ground or surface during the soil treatment. An automotive or vehicular soil handler that can move along a surface.

For example, during ground excavation, such as pipe work such as gas pipes, water pipes or sewage pipes, or road works or other foundation work, it is most preferable to fill the excavated ground without applying treatment to the removed soil. In some cases, however, the excavated soil may not be suitable as a filler. In this case, there is a need to discard the excavated soil and fill the excavated ground with soil having better properties or properties. If the excavated soil contains large amounts of rock, brick or concrete and / or metal or other foreign matter, for example, the soil cannot be used for filling purposes. In addition, for example, filling a soft soil such as a very small particle size, high viscosity mud or a weathered soil so difficult to harden, may cause a base settlement of the filled ground. In addition, if the soil produced during ground excavation is of extremely poor quality, it must be disposed of as industrial waste, despite strict institutional regulations on this kind of waste. Thus, there has been a strong need for soil treatment means that can convert soil of standard quality into useful resources.

In this regard, if the soil simply contains foreign matter in a mixed state, it can be filtered and then filled in the excavated ground. On the other hand, if the soil is too soft and fragile to be used as a filling material, there is a risk of causing basic settlement, which should be treated with soil improvement or reinforcing agent or reinforcing material before filling. In this type of soil treatment, for example, lime and cement can be mixed and added to excavated residue and reinforcement soils to create soils of improved structure or properties that can be used for filling excavated ground or other uses. Conventional methods were used.

Typical mixers that have been used to date for soil reinforcement, incorporating soil improvers or modifiers into excavated soil, are mixers with rotary mixing means and mills with rotary grinding drums. In particular, in the case of a mixer type machine, the excavated soil is uniformly mixed in the tank provided with the mixing means together with the soil improving material. The mixing means is a batch type having the function of stirring and mixing the contents of the mixing tank, or a screw type having the function of continuously feeding the soil forward while mixing with the participating soil improving material during the continuous processing operation. screw type).

Regardless of the type of mixing means, which are batch or continuous, the soil treatment machine consists mainly of a fixed soil treatment plant operating at a fixed position. Soil treatment facilities of this kind usually include untreated soil storage for storing soil and sand to be treated in addition to soil treatment units and related parts such as conveyors and treated soil storage for storing soil products treated with soil improvement materials. The sand or soil that needs to be treated is usually generated from the foundational ground work of road construction sites and building sites. The amount of sand or soil that needs to be treated depends largely on the number and scale of the ground work site and also on the frequency of these ground works. That is, depending on these factors, the amount of soil going to and from the soil treatment plant varies widely. As a result, the amount of treated soil is often too small for the plant's soil treatment capacity or sometimes increases to cause flooding from untreated soil storage.

As expected, large yield fluctuations in the soil to and from the soil treatment plant can be suppressed by aggregating sand and soil from large areas. In this case, however, the installation needs to have a larger soil treatment capacity, depending on the capacity of the soil handler as well as the width of the reservoir for untreated and treated soil. Large soil treatment plants that require large space are subject to various regulations in terms of location and environmental conditions.

Excavation of sand and soil and filling of treated soils usually occur at road construction sites or other groundwork sites. In other words, despite the fact that sand and soil excavation and treated soil filling are very frequent, large quantities occur around populated urban districts, the location of large-scale soil treatment facilities that require large amounts of space tends to be large. Limited to sparse suburbs. In addition, sand and soil must be collected from large areas in order to operate a large soil treatment plant consistently at an adequate production rate for its capacity. This means that the sand and the soil have to travel very far away. However, the transfer of sand and soil by dump trucks causes a so-called "dump truck contamination" problem along the transport route of the soil transport truck, in addition to the high transportation costs, which account for a very large portion of the total cost of soil treatment. The high cost of soil treatment can lead to illegal disposal and environmental degradation.

Another type of soil processor, that is, a crushed soil processor, is disclosed, for example, in Japanese Patent H9-195265. This prior art soil treatment machine is of a riding or vehicle type structure with a chassis on a crawler base conveyor. Mounted on the chassis is a soil crusher with a series of rotating crushing drums. In this case, the excavated soil and the added soil improving material are thrown into the soil hopper and the addition hopper, and are supplied toward the crushing drum by a feed conveyor which transfers the soil and the additives filled in the crushing drum. The treated soil is discharged from the crusher by the discharge conveyor. That is, in this case, all the mechanisms necessary for the soil treatment are integrated in the main body of the vehicle machine, so that the machine can move to the road construction site or the ground work site and work. During excavation, treatment and filling of the soil, the vehicle base conveyor of the machine can be moved around the ground surface being processed. Therefore, the use of these riding and automobile soil treatment machines significantly reduces the cost of treating the soil. In particular, there is no need to send the soil to the treatment facility or bring the soil to the work site, and the problem of environmental pollution caused by the dump truck can be prevented. .

In the case of the shredded mixer described above, the soil which has fallen from the feed conveyor onto the rotary shredding drum together with the soil improver is broken into small pieces and mixed together due to the beating action of the rotary shredding drum. Thus, in this case, the soil does not need to be mixed uniformly with the soil, but may be better mixed with the use of a rotating beating drum. However, the crusher must have sufficient fall distance at a fairly high position so that the soil and the added soil improver are subjected to a crushing impact by increasing the number of times they fall into gravity. This means at the apex of the hopper above the shredder is located at a fairly high level, and the processing soil and additives have to be transferred to its height using a feed conveyor.

As noted, crushed soil handlers can be transported to and operated at the foundation site. For movement, the machine typically loads a road with limited vehicle height on a trailer truck and sends it to the workshop. Therefore, to move the road, the height of the machine must be limited. In other words, the number of shredding drums is limited and the beating or shredding operation of the mixing process is limited. To comply with traffic laws that limit vehicle height, limit the crushing drums of the soil processor to three, but this is not enough to mix and crush the excavated soil and the added soil improver.

Soil and added soil improvers may be unevenly mixed, resulting in uneven settlement. In this case, in order to prevent inequality and stabilize the ground, the soil improver should be mixed with the newly filled soil at an excessively high mixing rate, which is so hard that the ground becomes too hard to be re-excavated at the next stage or other purposes. Makes it difficult. In other words, given the poor properties of the soil being treated or treated, the fractured soil improver can be applied only in limited cases.

In addition, in the case of the combination of the pressure shovel and the soil processor disclosed in the international patent application WO98 / 53148, in particular, the soil processor has an upper rotating body rotatably mounted on the crawler base feeder, and the soil mounted on the upper rotating body. Excavation means, and a mixing means provided therein and comprises a soil treatment container located between the two belts of the base conveyor. The excavated soil is supplied to the soil treatment vessel from the soil hopper provided at the top and one end of the soil treatment vessel, while the soil improving material is supplied to the soil treatment vessel from the upper rotary body. The soil is mixed with the added soil improving material by the mixing means in the soil treatment container and discharged through the soil discharge section provided at the other end of the soil treatment container.

This prior art can produce significantly higher quality soil than the present crushing soil treatment, but in order to maintain its function as a power shovel, there is a problem that the soil treatment container must be placed in a fairly limited space on the side of the base conveyor. Therefore, this machine is only suitable for treating relatively small amount of soil in the foundation construction, and is not suitable for treating large amount of soil in a short time effectively in the large scale soil treatment facility described so far.

As is well known, the present invention addresses an extended field of research in an effort to develop a soil treatment machine capable of mixing large amounts of soil and added soil improvers at low cost, such as environmental pollution from dump trucks. Despite the traffic problem, the present invention obtains the following effects.

First, a soil treatment plant with a fixed soil treatment system or machine can produce high quality soil on a large scale, but the transportation costs are high and it is difficult to maintain a proper operating efficiency for its capacity. To reduce the cost of high soil transport, it is desirable to establish a soil treatment plant as near as possible in suburban areas that consume much of the soil produced and carry out various foundation works. The difficulty of securing a suitable area for the installation of large soil treatment equipment can be overcome by effectively using limited space.

Considering the geographic location of the foundation work site where soil is treated for other purposes, such as excavation or embankment, the soil treatment plant does not need to increase the size of the treatment facility, as long as it is restricted to a specific area. In addition, in collecting and treating excavated soil, the same reservoir may be used for the storage of the loaded treated soil and for the storage of the treated soil to be taken out. In this way, the effective use of the soil treatment plant itself can significantly improve the space problem. Therefore, in view of reducing costs and preventing environmental pollution by dump trucks, it is advantageous to construct a relatively small scale soil treatment facility near an area where a need for soil treatment increases or a specific service area.

However, if a fixed soil treatment machine is installed in each facility, the operation of such a small facility will result in low mechanical efficiency. This is common in small installations with a small service area to excavate and load small amounts of soil each time, because it takes time for the soil storage at each plant to be fully filled. Thus, due to mechanical efficiency, it is more advantageous to transport a single processor to the soil reservoirs of multiple soil treatment plants than to install a fixed soil processor in each small plant.

In conclusion, a significant improvement in the mechanical efficiency of the soil treatment machine is a soil treatment network system with a relatively simple facility, capable of overseeing multiple small soil treatment areas near multiple areas requiring service, Arrange each area to efficiently allocate space, use one soil storage area simultaneously for loading and unloading, and send it to another soil treatment system as soon as the storage area is filled with untreated soil. This is because it provides an automated soil handler. The establishment of such a soil treatment system, consisting of multiple small soil treatment zones, can produce high-quality treated soil on a large scale and reduce the transport to dump trucks, thereby reducing existing traffic problems.

Soil handlers used for this purpose should preferably have their own built-in, compact, portable soil treatment system. In addition, the machine must be able to produce high-quality soils in a stable manner and be capable of effectively treating large quantities of soil in a short time.

Accordingly, it is an object of the present invention to provide a compact or ride-type or automotive soil handler which can be transported to various locations and contributes, for example, to the installation of a suitable soil treatment system in a small soil treatment yard. In a rapid way, poor soils can be treated with improved soil products.

Another object of the present invention is to provide a soil processor having a traveling means that can be easily transported by using a tow truck or other means of transporting the soil as an improved soil product in a place or soil reservoir where soil of poor nature is produced. To provide.

It is another object of the present invention to provide a soil processor having a running means capable of producing soil of improved properties consisting of a homogeneous mixture of soil and added soil improver or improver.

Still another object of the present invention is to provide a soil processor having a traveling means capable of precisely adjusting the mixing rate of the added soil improving material during soil treatment.

It is a further object of the present invention to provide a soil handler having a vehicle suitable for use in treating soft soils with hardeners such as lime, cement, etc., before refilling the soil into the excavated ground to strengthen the underlying soil structure. To provide.

According to the invention, the above object can be achieved by an automated soil treatment machine comprising the following essential components:

A main frame mounted on the vehicle drive means and providing thereon at least one soil supply stage, a soil treatment stage, and a soil release stage;

A soil supply stage comprising at least one soil hopper and an additive hopper for supplying soil and an additional soil improving material to the soil treatment stage;

A soil treatment container mounted on the main frame and rotatably supported in a soil treatment container having an inlet opening on the upper side of the front end and an outlet opening on the bottom side of the rear end thereof for receiving the processing soil and the added soil improving material; A soil treatment stage including rotation mixing means and the like applied to the soil and the added soil improving material substantially horizontally through the soil treatment vessel while being uniformly mixed with each other; And

And a soil release stage comprising a soil release conveyor adapted to receive the treated soil through the outlet opening of the soil treatment container and transfer it in a predetermined direction.

In a particular form of the invention, the rotary mixing means is comprised of a rotary paddle mixer having a plurality of rotary paddle combination units, each unit having a plurality of mixing paddles attached on the rotary shaft at a predetermined pitch. For example, two or three rotary paddle combination units extend axially through the soil treatment vessel and are preferably adapted to rotate in opposite directions with respect to each rotary paddle combination unit. In this case, the rotary shaft of one of the rotary paddle combination units is driven from the hydraulic motor and rotatably connected with the rotary shaft (s) of the other rotary paddle combination unit (s). The rotary shaft of the rotary paddle combination unit is supported by the bearings at its front and rear ends, and the inlet and outlet openings of the soil treatment container are bearing the rotary paddle unit bearing to smoothly transfer the soil and the added soil improving material through the soil treatment container. Is located between.

Preferably, in order to best mix the soil and the added soil improver in the smallest sized container, the soil treatment vessel described above is approximately three times the axis pitch of the paddle on the rotating shaft of the rotating paddle combination unit of the paddle mixer. It is arranged to have a full length. Likewise, the paddles are arranged to have a diameter corresponding to one third of the full length of the soil treatment vessel.

The soil feeding stage is adapted to receive soil and additive soil improving material from soil hopper and additive hopper, respectively, and to feed the received soil and additives to the inlet opening of the soil treatment vessel. In this case, the feed conveyor is arranged to have an inclined transfer surface for transferring the soil and adjuncts received in an obliquely upward direction toward the inlet opening of the soil treatment container, wherein the soil hopper is located upstream of the feed conveyor transfer surface. The addition hopper, on the other hand, is arranged to be located above the transfer surface on the downward side of the soil hopper. Further, in the discharge stage, the discharge conveyor is preferably applied to transfer the treated soil in an upwardly inclined direction from a position below the outlet opening of the soil treatment container, on top of which an extension is provided which can be folded inward. In addition, in this case, the machine room can be located above the rear end of the soil treatment container having the discharge opening.

The automated soil treatment machine according to the invention may further comprise a soil supply measuring means for measuring the amount of the treated soil supplied from the soil hopper. In addition, the addition hopper is applied to adjust the feed rate of the additive soil improver in relation to the soil transfer rate measured by the soil supply measuring means in order to maintain a constant mixing ratio of the additive soil improver to the treated soil.

It may also be configured to supply soil and modifiers to the soil treatment container directly from the soil and the addition hopper. In this case, the soil hopper is placed in one unit of the soil treatment vessel to directly supply the soil for treatment, and the addition hopper is supplied to the soil treatment vessel from the predetermined distance from the soil hopper and the position on the rear side. Are arranged. In addition, the additive feed rate control means may be provided to the additive hopper to control the additive feed rate supplied to the soil treatment container, combined with a rotational speed sensor for detecting the rotational speed of the paddle mixer shaft, or the additive feed rate control means is rotated paddle mixer Allows to adjust the feed rate of the additive in relation to the rotational speed of the shaft. Preferably, the soil treatment container is provided with a gate for controlling the soil feed rate. In addition, in order to control the addition feed rate, the addition hopper may include a rotary water feeder that is driven from the variable speed electric motor and serves as an additive feed rate control means. In this case, the rotational speed of the variable speed electric motor can be adjusted by the controller using the signal from the rotational speed sensor of the paddle mixer rotation axis as a control signal.

The above and other objects, features and advantages of the present invention will become apparent from the following detailed description together with the accompanying drawings which illustrate exemplary embodiments of the invention. Needless to say, the invention is not limited to the specific forms of the drawings, which are shown for illustrative purposes only.

1 is a schematic diagram of an embodiment of a soil processor having a traveling means according to the present invention,

Figure 2 is a schematic plan view of the soil processor of Figure 1,

3 is a left side view of the soil treating apparatus of FIG. 1,

4 is a schematic diagram of a supply conveyor,

5 is a schematic cross-sectional view of the soil hopper,

Figure 6 is a schematic cross-sectional view of the hopper for additional soil improver,

7 is a cross-sectional view taken on the X-X line of FIG.

8 is a schematic cross-sectional view of a quantitative supply mechanism,

FIG. 9 is a schematic cross sectional view of a quantitative feeding mechanism similar to that of FIG. 8 but in another operational phase,

10 is a schematic illustration of the soil supply measuring means,

11 is a schematic diagram illustrating the measurement principle of soil supply amount or soil supply rate,

12 is a schematic external view of the soil treatment container missing paddle mixer to show the inside of the soil treatment container,

13 is a cross-sectional view of the soil treatment container,

14 is a cross-sectional view taken on the Y-Y line of FIG.

15 is a cross-sectional view taken on the Z-Z line of FIG.

16 is a schematic illustration of the soil treatment operation in the yard processing soil,

17 is a schematic illustration of the soil processor being transported by the tow tractor,

18 is a block diagram of a control system employed in the soil treatment machine,

19 is a schematic illustration illustrating the relationship between the paddle pitch of a paddle mixer and additional soil improver in the soil treatment container and the mixing effect on the soil;

20 is a diagram showing a mixing effect on the soil and the added soil improving material in the longitudinal direction of the soil treatment container of FIG.

21 is a schematic cross-sectional view of the soil and additional feed cross section and mixing mechanism in the soil treatment stage of the soil processor in another embodiment of the present invention,

FIG. 22 is a block diagram of a controller employed in the embodiment of FIG. 21 maintaining a constant mixing ratio.

The invention will now be described in more detail on the basis of the preferred embodiments shown in the accompanying drawings. 1 to 3 show an automotive or vehicular soil treatment machine according to the present invention. In FIG. 1, indicated by 1 is the base carrier of the machine, which is a crawler type passenger vehicle having a crawler belt 1a in a manner well known in the art. Since the base feeder 1 is caterpillar, this generally prevents the machine from becoming unstable due to the impact of the load, for example when the excavated soil is thrown into the machine. However, in the case of a structure in which the soil excavated by means such as a conveyor is continuously discharged, the base conveyor may be wheel-type.

Mounted on the main frame 2 of the base transporter 1 is a soil supply stage 3 located on its front part on the left side of FIG. 1, and the soil treatment stage 4 is a soil supply stage 3. It is located behind. Also, a soil release stage 5 is provided behind the soil treatment stage 4. Located above the soil treatment stage 4 is a machine chamber 6 containing mechanical components such as engines, hydraulic pumps, divert valve units and the like. The machine chamber 6 is mounted on a post 6a that stands on the main frame 2.

The soil supply stage 3 includes a supply mechanism for the excavated soil and additional soil improving material, as well as a measurement mechanism for measuring the soil supply rate. The soil supply stage 3 is further provided with a feed conveyor 10 for transferring the soil and additional soil improver to the soil treatment stage 4. The soil hopper 20 is located above the feed conveyor 10 at an upstream position in the feed direction of the feed conveyor 10, and the addition hopper 30 is located at the rear side of the soil hopper 20. The soil feed rate is measured by the feed conveyor 10 and the additional feed rate through the addition hopper 30 is adjusted in accordance with the measured soil feed rate.

The feed conveyor 10 is supported on an extension frame 7 which projects toward the front of the main frame 2. The extension frame 7 is inclined upward from its front end at its lowest level to its rear end connected to the main frame 2. Thus, the feed conveyor 10 supported on the extension frame 7 is inclined upward from its front end to its rear end. In order to facilitate the discharge of soil through the soil hopper 20, the front end of the feed conveyor 10 is located at the lowest operating level, which is higher than the treading surface of the crawler belt 1a but with the main frame 2 Lower than).

As shown in FIG. 4, the feed conveyor 10 is provided with a circulating shaped conveying belt 11 (indicated by a imaginary line) formed of a similar material that stretches to some extent by itself depending on the weight of the rubber sheet or the applied load. do. 12 denotes a conveyor frame which cyclically supports the rotary shafts 13a and 14a across the opposite ends of the drive roller 13 and the following roller 14, respectively. The circulating feed belt 11 passes around the drive roller 13 and the following roller 14. The rotary shaft 13a of the drive roller 13 is connected to the hydraulic motor 15. Therefore, as the rotary shaft 13a is driven to rotate by the hydraulic motor 15, the conveying belt 11 is rotated by the drive roller 13 in the direction indicated by the arrow in FIG.

An upper portion on the opposite side of the load transfer surface of the transfer belt 11 and a guide plate 16 along it are provided, which, to a predetermined length, the transfer belt 11 has respective upper ends protruding above the load transfer surface. These guide plates 16 serve as a barrier to prevent the soil accumulated on the conveying belt 11 from overflowing to both sides of the transmission path. In addition, a plurality of guide rollers 17 are provided below the transport belt 11 at predetermined intervals within and along the transmission path. The rotary shaft 14a of the follower roller 14 is indirectly connected by an adjusting means 18 which serves to keep the tension of the conveying belt 11 constant without being directly connected to the conveyor frame 12. Although not shown in detail in the drawing, the tension adjusting means 18 includes a tension detector for adjusting the tension of the conveying belt 11 to a predetermined value.

Soil hopper 20 is composed of a frame structure of the box shape upper and lower open. As shown in detail in FIG. 5, the soil hopper 20 is composed of an upper frame section 20a which receives soil from the top, and a lower frame section 20b for supplying soil to the supply conveyor 10. The upper frame section 20a of the soil hopper 20 branches towards its upper open end so that the soil can be smoothly thrown into the soil hopper 20. On the other hand, the lower frame section 20b passes through it and converges toward its lower open bottom end where the soil is fed to the feed conveyor 10. More specifically, the lower frame section 20b converges toward the bottom end at a width slightly smaller or similar to the width of the conveying belt 11 of the feed conveyor 10. The soil hopper 20 is fixedly held on the main frame 2 via the frame member 8.

A sorting means 21, for example a manure plate or grid plate, is provided in the upper frame section 20a of the soil hopper 20 to filter out foreign matter. The sorting means 21 is provided in the upper frame section 20a of the soil hopper 20 to filter foreign matter. The sorting means 21 may be fixedly provided at the inlet of the upper frame section 20a of the soil hopper 20, or may be applied to vibrate in the upper frame section 20a using vibration driving means. The upper open end of the upper frame section 20a joined with the sorting means 21 is inclined to one side. Therefore, when the excavated soil is dropped into the soil hopper 20 from the front side using, for example, a bucket of the hydraulic excavator, a solid foreign matter mass that does not pass through the sorting means 21 is inclined to the sorting means 21. While falling down along, the soil selectively passes through the sorting means 21.

The soil introduced into the soil hopper 20 is allowed to fall over the conveying belt 11 of the feed conveyor 10 through the lower frame section 20b due to gravity, and is fed forward by the conveying belt 11. Although not necessarily a requirement, it is desirable to adjust the feed rate of the soil with the conveying belt 11, and to suppress the change of the soil feed rate as much as possible, and for the purpose of mixing additional soil improvers at a constant mixing ratio based on the soil feed rate. Will be described later.

The upper surface of the soil layer above the conveying belt 11 should be limited to the level of the derived upper end of the guide plate 16, and a gate 22 is provided at the bottom end exit of the soil hopper 20. The gate 22 has an open gate area of a height limiting the height of the soil leaving the soil hopper 20 to a level not exceeding the upper protrusion end of the guide plate 16. Thus, as the transfer belt 11 operates, the soil is transferred onto the transfer belt 11 to a predetermined thickness by the gate 22. In addition, the horizontal roller 24 with the rake 23 is circulatedly supported on the outer side of the gate 22, whereby the soil of the top level is passed through the gate 22 and supplied forward. As a result, the soil is constantly forwarded by the conveyance belt 11 to a predetermined height or thickness.

The addition hopper 30 for the soil improving material is fixedly supported at the position on the main frame 2 by the post 9, and is configured as shown in Figs. In this example, for the purpose of soil improvement, various additives may be mixed into the soil depending on the intended use. For example, lime and cement are mixed in the soil with other additives as needed to produce soil that will be used to fill the excavated ground or to improve the foundation. Other additional soil modifiers are used, for example, for purposes such as improving the clay content, imparting cushioning properties to the soil, or improving the soil in arable land.

The addition hopper 30 is mainly constituted by an additional reservoir 31 and a water feeder 32. The reservoir 31 comprises a rectangular box-shaped upper portion 31b and a lower cylindrical cross section 31a. An upper rectangular box-shaped cross section 31b is provided with a lid 33 consisting of a pair of lid plates 33a hinged. The lid plate 33a is open to each other in an outward direction and is swingable, and is fixed in a position extended upward by a suitable stopper. The additional soil improver is located between the lid plate 33a that extends upwards and in a rectangular container cross section 31b above the storage container 31 and from the flexible container bag 34 filled with the additional soil improver 30. Is supplied. The cutting blade 35 protruding upward is provided at the bottom of the upper box cross section. Therefore, when the flexible container bag 34 in the addition hopper 30 is set, the bottom portion of the flexible container bag 34 is cut open by the cutting blade 35, and the soil improvement in the flexible container bag 34 is improved. The ash is allowed to flow into the cylindrical cross section 31a under the reservoir 31. Once the soil improver is filled into the additive hopper 30, the lid 33 is closed to prevent the additive from dispersing around the machine in this manner.

As is apparent from FIG. 7, the lower cylindrical section 31a is connected with the water feeder 32 through the opening 36. Thus, the additional soil improver in the cylindrical section 31a below the reservoir 31 is allowed to enter the water feeder 32 through the opening 36. In the present embodiment, the opening 36 has a structure having a relatively small open area compared to the shear area of the lower cylindrical cross section 31a. Therefore, when the additional soil improver is supplied to the water feeder end face 32 only by gravity flow, the smooth supply to the water feeder end face 32 may be inhibited by the bridging phenomenon. To avoid bridging, a cross-rod turning gate 37 is provided at or near the bottom of the lower cylindrical section 31a of the reservoir 31. The cross rod rotating gate 37 is connected with and is driven to rotate with the hydraulic motor 38 provided on the lower side of the lower cylindrical section 31a. When the rotary gate 37 is operated, the soil at the bottom of the cylindrical section 31a is stirred and smoothly flows into the water supply section 32 without stagnation.

The water feeder cross section 32 comprises a casing 40 having a width approximately equal to the width of the conveying belt 11 of the feed conveyor 10. Provided at the bottom of the casing 40 is an additional feed port 41 which takes the form of a slot having a length slightly smaller or nearly equal to the width of the conveying belt 11. The additive sent from the reservoir 31 into the feeder end face 32 is added to the soil being transferred by the transfer belt 11 via an additional feed port 41. In supplying additional soil improving material to the conveying belt 11, it is not necessarily distributed over the entire width of the conveying belt 11. If desired, the supply end 32 may be a structure for supplying the additive to the center portion of the conveying belt (11).

The feed rate of additional soil improver from water feeder cross section 32 may be adjusted. In particular, as shown in FIGS. 8 and 9, the lower end of the casing 40 leading to the additional feed port 41 described above is closed by an arced wall 40a on its front and rear sides, and the water feeder ( 42 is rotatably mounted between the arcuate walls 40a. The water feeder 42 is composed of a rotary shaft 43 passing horizontally through the lower end of the casing 40, and a plurality of water supply 42 at a predetermined angular interval (90 degrees in certain embodiments) around the circumference of the rotary shaft 43 Radial partition walls 44 are provided to form a V-shaped quantitative metering container 45 between adjacent partition walls 44. In this example, the width of the additional feed port 41 is substantially narrower than the gap between the outer ends of the adjacent partition walls 44. The arcuate wall 40a forms an arc of at least 90 degrees or more.

When the rotary shaft 43 is operated, the four partition walls 44 constituting the water quantity measuring container 45 rotate around the rotary shaft 43 with respect to the outer end in sliding contact with the arc-shaped wall 40a. Thus, the arcuate wall 40a serves to remove excess soil from each of the water metering containers 45. In each quarter period of the rotary shaft 43, for example, the water feeder 42 at the position of FIG. 8 is provided to supply a predetermined amount of soil corresponding to the internal volume of each water metering container 45. FIG. It is moved over the conveyance belt 11 of the supply conveyor 10 shown in FIG. Therefore, the feed rate of the added soil improving material from the water supply end face 32 can be adjusted by changing the operating speed of the rotary shaft 43. In order to allow fine adjustment of the operating speed of the rotary shaft 43, the casing 40 on the outer side of the casing 40 connected to the rotary shaft 43 via a power transmission means 47 such as a transmission belt. There is provided an electric motor 46 mounted on the back panel.

The feed rate of the added soil improving material is changed depending on the feed rate of the soil transmitted by the conveyance belt 11 of the feed conveyor (10). The amount of soil conveyed by the conveying belt 11 is leveled by the leveling rollers 24 and the gate 22 which level the height or thickness of the soil layer on the conveying belt 11 but are unable to accurately maintain a constant soil transfer rate. Somewhat adjusted. Thus, the soil supply measuring means 50 is provided on the supply conveyor 10 for the purpose of detecting the amount of soil transmitted by the conveying belt 11. In particular, the soil supply measuring means 50 is applied to detect the weight of the soil transmitted by the conveying belt 11, arranged as shown in Figures 10 and 11.

In these figures, denoted 51 is a pair of rollers which are fixedly supported at a spaced position on the conveyor frame 12 and contact with the rear side against the moving transfer belt 11 to rotate themselves. A soil supply measurement zone is formed between these fixed rollers 51. The soil feed measuring zone includes a gravimetric roller 52 which is located in a substantially intermediate position between the two fixed rollers 51 and is in contact with the rear side of the conveying belt 11. In this example, the weighing roller 52 is made of a flexible material and detects the degree of bending of the conveying belt 11 which is bent downward by itself by the weight of the loaded soil as described above.

For this purpose, the gravimetric roller 52 is mounted on one end of the swinging plate 54 which is swingably supported by the bearing member 53 on the conveyor frame 12. Connected to the other end of the swinging plate 54 is a load sensor 55 having a load cell such as a weighing means. Therefore, the transport belt 11 on which the soil pile is loaded is settled down due to the bending under the accumulated soil weight when the soil feeding weighing zone between the fixed rollers 51 is reached. As a result, the weighing roller 52 is pushed down in the direction of the arrow D in FIG. 11, and the other end of the swinging plate 54 connected to the weighing roller 52 is displaced in the direction of the arrow U to load sensor 55. Apply an increased load on). Therefore, the amount of soil transmitted by the transport belt 11 can be measured based on the detection signal by the load sensor 55.

With respect to the supply conveyor 10, if the soil hopper 20 and the addition hopper 30 are located as close to each other as possible, transmission of the conveying belt 11, which serves to supply the excavated soil and the added soil improving material. The distance can be shortened. However, as described above, since the soil supply measuring means 50 is located between the soil hopper and the addition hopper 20 and 30, an increase in the length of the conveying belt 11 is required. In this regard, since both the soil hopper 20 and the addition hopper 30 have a predetermined volume, the length of the conveying belt 11 does not need to be significantly increased, and thus the soil supply measuring means under the conveying belt 11 ( Allow the creation of space for 50). Nevertheless, the soil layer on the conveying belt 11 is flattened to a predetermined height or thickness by the horizontal roller 24 and the gate 22, and the soil supply measuring means 50 has no place useful for installation. Case may be omitted.

In the above-described method, the soil and the added soil improving material are transmitted by the transfer belt 11 toward the other end of the supply conveyor 10 connected to the soil treatment container 60 of the soil treatment stage 4. The soil treatment container 60 is usually composed of a main body 60a provided with an opening over a predetermined range on the vertex side, and a lid member 60b detachably fixed on the main body adjacent to the vertex opening. The main body 60a is fixedly mounted on the vertex of the main frame 2. The main body 60a located above the lid member 60b does not contact the latter. Thus, the lid member 60b can be removed or separated from the main body 60a mounted at the operating position on the main frame 2.

The soil and the added soil improving material transferred by the conveying belt 11 are supplied to the soil treatment container 60 from the top to go through a mixing or blending process. For this purpose, the feed conveyor 10 usually needs to be located at a high point above the soil treatment container 60. If the feed conveyor 10 is supported horizontally on the main frame 2, the soil hopper 20 should be located at a higher point suitable for throwing the excavated soil. In this connection, according to the invention, the feed conveyor 10 is supported on an inclined extension frame 7 which protrudes obliquely downward from the main frame 2. With this structure, in addition to the soil hopper 20, the upstream end of the feed conveyor 10 is also located at a low point where the excavated soil can be extremely easily thrown.

12 to 15, the internal structure of the soil treatment vessel 60 of the soil treatment stage 4 is shown. As can be clearly seen from FIG. 12, the soil treatment container 60 is in the form of a container such as a rectangular box, which extends in the longitudinal direction of the latter on the main frame 2. The soil treatment container 60 is provided with a swing door 61 on its outer side. In addition, the soil treatment container 60 is provided with an inlet frame 62 which surrounds the inlet opening on the upper side of its front end, and an outlet frame 63 which surrounds the outlet opening on the bottom side of its rear end. As shown in FIGS. 13 to 15, the pair of paddle mixers 64 extend through the soil treatment vessel 60 in a parallel relationship to the longitudinal direction. Each paddle mixer 64 consists of a rotary shaft 65 and a plurality of paddles 66 intermittently mounted on the rotary shaft 65 along a predetermined angular roll agitator or mixing member with the latter longitudinal axis. . In the particular embodiment shown, each paddle member 66 has a support rod 66a rigidly fixed to the rotating shaft 65, and a paddle plate 66b secured to the support rod 66a by bolts 66c. It includes. Thus, each paddle 66 can be easily replaced if worn or damaged.

As the rotary shaft 65 rotates, each paddle 66 rotates around the rotary shaft 65 in the soil treatment container 60, and the soil and the added soil improvement introduced into the soil treatment container 60 are improved. Ash is mixed and transmitted toward the exit opening of the rear end of the soil treatment container 60, and is mixed uniformly with each other. In the particular embodiment shown, the soil treatment container 60 is provided with a paddle mixer 64 therein. However, it should be understood that the soil treatment container 60 may be provided with a large or small number of paddle mixers or mixers, depending on their width and height dimensions. In the case of the soil treatment container 60 having an increased height, for example, a small number of large paddle mixers or mixers having a large radius of rotation may be employed. On the other hand, when the soil treatment container 60 is wide and low in shape, it is preferable to employ a plurality of paddle mixers in the transverse direction. Thus, the number of paddle mixers 64 that can achieve the highest mixing efficiency is determined in terms of the size of the soil treatment container 60, which is also largely determined by the width and machine height of the main frame 2. However, in order to smoothly mix and transmit the soil and the added soil improving material in the soil treatment container 60 in an efficient manner, an even number of paddle mixers 64 having a structure rotating in opposite directions with respect to each other should be provided.

The opposite end of each paddle mixer 64 rotation shaft 65 is rotatably supported in a bearing 67, as shown in FIG. 13, and the front end of the rotation shaft 65 is connected to the soil treatment container 60. It extends into the housing of the vessel drive end face 68 provided adjacent the front end. Attached to the front end of each rotary shaft 65 are the electric gears 69 engaged with each other. One of the electric gears 69 meshes with a drive gear 71 mounted on the output shaft of the hydraulic motor 70. Therefore, when the hydraulic motor 70 rotates to operate, each of the rotary shafts 65 holding the paddle 66 rotates simultaneously in the opposite direction. In addition, attached to the bottom of the soil treatment vessel 60 is a guide plate 72 to prevent the soil and the added soil improving material from stagnation at the lower corner of the soil treatment vessel 60. The guide plate 72 is provided with a perforation at its rear end to receive the exit frame 63 of the soil treatment container 60.

A paddle 66 is provided along the entire length of each of the rotary shafts 65 of the paddle mixer 64, which is disposed in the mixing zone between the inlet and outlet frames 62 and 63 of the soil treatment container 60. Thus, the bearing 67 supporting the opposite end of the rotary shaft 65 is mounted at a position in front of the inlet frame 62 but behind the outlet frame 63. As a result, the soil and the added soil improving material supplied through the inlet frame 62 are transferred at a constant speed toward the outlet frame 63 at the rear end of the soil treatment container, while smoothly intermixing in a stable manner.

As a result of the mixing action of the paddle mixer 64 which uniformly mixes the excavated soil and the added soil improving material in the soil treatment container 60, an improved soil composed of a uniform mixture of the excavated soil and the added soil improving material is It is produced and discharged through the outlet frame 63 of the soil treatment container (60). The improved soil falls by gravity onto the discharge conveyor 73 located below the outlet frame 63. In this embodiment, the soil inlet end of the discharge conveyor 73 is located at a lower point than the outlet frame 63 provided on the bottom side of the soil treatment container 60. The discharge conveyor 73 is set at an inclined position which inclines upwardly toward another branch end. This is because when the conveyor is set in the horizontal position, it becomes difficult to stack the treated soil in large piles.

If lime is used as the soil improver, the soil product consisting of the soil and the added soil improver is in the form of a node. In order to smoothly transmit the soil product improved in the upwardly inclined direction using the discharge conveyor 73, the inclination angle of the conveyor is limited to a certain range. This means that the length of the soil discharge conveyor 73 should be extended to some extent in order to accumulate improved soil products. In this regard, the overall length of the soil processor can be reduced by allowing the rear or outer end of the discharge conveyor 73 to be folded. In this way, the discharge conveyor 73 may be configured to have a folded point at a position generally lower than the highest point of the soil processor, in particular at a position lower than the upper end of the addition hopper 30. Accordingly, the soil discharge conveyor 73 is fixedly supported on the main frame and fixed conveyor portion (73a) extending from the bottom of the soil treatment container 60 inclined upwardly from the bottom, and through the link mechanism (74) And a foldable conveyor portion 73b which is pivotally connected to the upper end of 73a) and which can be folded in the direction of the arrow in FIG. Thus, the foldable conveyor portion 73 is driven by a hydraulic cylinder or other suitable drive means to move between the operating position indicated by the solid line and the folded position indicated by the imaginary line.

What is typically shown in FIG. 16 is the soil improvement work in the small scale soil processing yard using the riding type soil processor of the structure mentioned above. In the yard, there is a pile of untreated soil collected in advance. First, to begin the soil treatment operation, the untreated soil is thrown into the soil hopper 20 of the machine. For this purpose, hydraulic shovels PS can be used as a means of throwing untreated soil into the soil hopper. Thus, the aggregated soil piles on the yard can be processed into products of improved properties using a riding soil processor and hydraulic shovel.

In order to process the soil accumulated over a certain area of the yard, the untreated soil which is continuously pumped up by the bucket of the hydraulic excavator is thrown into the soil hopper 20 of the soil processor. Soil from the soil hopper 20 is transferred by the feed conveyor 10, while the added soil improving material is supplied from the addition hopper 30 and poured on the surface of the feed conveyor 10. At the inner end of the feed conveyor 10, the soil and the added soil improving material fall into the soil treatment vessel 60 through the inlet frame 62 of the soil treatment vessel and toward the exit frame 63 of the soil treatment vessel 60. During the transfer, the paddle mixer 64 is mixed evenly with each other by the mixing action. As a result, what is produced at the outlet of the soil treatment container 60 is, for example, a soil product composed of a homogeneous mixture of excavated soil and added soil improving material and having a node with improved properties. The improved soil product discharged through the outlet frame 63 is loaded in place on the yard by the discharge conveyor 73.

In addition to the progress of the soil treatment operations, untreated soil piles on the yard may be gradually consumed and used for the loading of improved soil products. Thus, most of the soil treatment yards can be used as storage for both untreated soil collected from the ground work site and for improved soil continuously generated by the soil treatment operation. This is an ideal and effective use of limited yard space, which is made possible by the use of ride-type soil handlers equipped with a base conveyor 1. By operating the base conveyor 1, the soil processor is movable on the yard as the storage area of the untreated soil is reduced.

In loading the treated soil onto the yard, all of the improved soil product emerges on the discharge conveyor 73, which can be placed in a predetermined position in one of the yards. However, it is sometimes desirable to classify improved soil products by particle size. For this purpose, the classification mechanism 75 shown in FIG. 16 is attached. In this case, the sorting mechanism 75 is portable and usually consists of a strainer 76 and a conveyor 77. Filter body 76 is of a desired net size and is vibrated to allow particles of a predetermined size or less, for example smaller than 13 mm, 20 mm or 25 mm to pass through. The improved soil of particle size that can pass through the strainer 76 is transferred back by the conveyor 77 and loaded into a given storage area. Improved soils of large particles that are not able to pass through the strainer 76 are also improved in properties by the coagulation cure process, and thus can be used by themselves or as a backfill after sorting the particle size again.

In order to improve the properties of the soil product, it is desirable to remove rock, brick or concrete and metal or other foreign matter from the untreated soil in preparation. As mentioned above, the filtering means 21 of the soil hopper 20 is provided for this purpose. Due to the manipulating action of the manure means 21, foreign matter which cannot pass through the manure means 21 slides down along the sloped apex surface of the manure means, while substantially only soil is supplied into the soil hopper 20. This precludes the possibility of the presence of foreign substances that interfere with the soil release operation.

Next, the mixing ratio of the soil to the added soil improving material for accurately maintaining the degree of condensation of the soil is adjusted within a predetermined range. In this regard, the coagulation effect of added soil improver varies with the characteristics of the soil to be treated. Therefore, it is desirable to determine the most preferred mixing ratio by previous experience. The mixing ratio of the soil to the added soil improving material may be weight ratio or volume ratio. However, it is desirable to determine the weight ratio in consideration of influence factors such as soil density and viscosity.

Soil supply measuring means 50 may be applied to measure the weight of the soil supplied from the soil hopper (20). The soil supply measuring means 50 is a structure for directly detecting the weight of the soil transmitted on the feed conveyor 10 from the load applied on the gravimetric roller 52. Regarding the added soil improving material, it is supplied from the addition hopper 30 to the supply conveyor 10 at a downstream point of the soil supply measuring means 50. The feed rate of the added soil improving material can be adjusted by changing the rotational speed of the metered feeder 42 of the metered feed end 32. Therefore, by the supply conveyor 10 in the same manner as the electric motor 46 is controlled in accordance with the signal from the load sensor 55 to change the rotational speed of the fixed-quantity feeder 42 and to change the feed rate of the added soil improving material. Even if there is a change in the soil feed rate, the predetermined mixing ratio can be maintained.

The nature of the treated soil product usually depends on what grade of soil and added soil improver are intermixed within the soil treatment vessel 60. In this regard, the soil treatment container 60 provided with a paddle mixer 64 may uniformly mix the soil and the added soil improving material to a sufficient degree. In the particular embodiment shown, the soil treatment container 60 is provided with a pair of paddle mixers 64 configured to rotate in the opposite direction indicated by the arrows in FIG. 15. Therefore, in the soil treatment container 60, the filled soil and the added soil improving material is sheared and mixed of the rotary paddle 66 fixed to the rotary shaft 65 of the paddle mixer 64 in the overall length of the soil treatment container. It is continuously mixed up and down by the action, so that the whole part is substantially separated into pieces, and as a result, a uniform mixture is formed. At the same time, since each paddle 66 is fixed obliquely with respect to the axis of the rotary shaft 65, the mixture of soil and additive soil improving material under the mixing action of the paddle 66 is the outlet of the soil treatment container 60. It is transmitted almost horizontally toward the frame 63. In addition, since there are no obstacles such as bearings between the inlet frame 62 and the outlet frame 63 of the soil treatment container 60, the mixture of the soil and the added soil improving material is smoothly transmitted at a constant speed. As a result, very poorly soiled soils can be treated with soils that are suitable for their intended purpose. In addition, except for the inlet and outlet frames 62 and 63, the soil treatment container 60 has a structure for treating the soil in an almost adjacent space, so that the soil and addition during the stirring and mixing of the paddle 66 The possibility of dispersion of soil improvers is excluded.

The soil and additive soil improver should be retained in the soil treatment vessel 60 for the time required for the paddle 66 of the paddle mixer 64 to shear the soil and additive soil improver to an appropriate degree in an efficient manner. In this regard, the soil and the added soil improving material is transmitted through the soil treatment vessel 60 substantially horizontally, for example, extending the length of the soil treatment vessel 60 or the height of the soil treatment vessel 60. By setting the proper transmission speed through the adjustment of the inclination angle of the mixing paddle 66 without increasing the, the appropriate residence time can be ensured.

When soil is interlaced on the paddle surface, the efficiency of shearing and mixing of the mixing paddle 66 may be reduced. In this regard, the paddle 66 of one paddle mixer 64 extends between the paddles 66 of the paddle mixer 64 and optionally overlaps when viewed in the direction of rotation of the rotation axis 65 in this way. At paddle mixer 64, two paddle mixers 64 rotate. Thus, during operation, soil stuck to the paddle 66 surface of one paddle mixer 64 is removed by the paddle 66 of the other paddle mixer 64 rotating in opposite directions. Therefore, due to this self-cleaning action, the paddle 66 is not affected by the decrease in mixing efficiency due to the deadlock soil.

In addition, the lid 60b may be removed to the apex side of the container main body 60a or the side door 61 of the side of the container main body 60a may be completely opened depending on the soil processing or processing operation. If so, it can be removed from the paddle 66 in a very easy way. That is, by performing this kind of repair and service at an appropriate frequency, the paddle 66 can be maintained in a smooth and efficient operating condition. If the paddle 66 is worn by frictional contact with the soil with prolonged use, the worn paddle portion 66b can be easily replaced by removing the bolt 66c.

If the viscosity of the untreated soil to be supplied to the soil treatment container 60 is low, it is stored in the soil treatment container 60 for as long as possible under normal stirring conditions for the purpose of enhancing the interaction between the soil and the added soil improver. Should be. Therefore, when treating low viscosity soils, it is desirable that the paddle mixer 64 rotate at low speed. On the other hand, it tends to be entangled around the highly viscous soil paddle 66 and thus interferes with the rotation of the paddle mixer 64 and, in the worst case, may also prevent the paddle mixer 64 from moving. Therefore, the paddle mixer 64 should rotate at high speed in the treatment of high viscosity soil.

As described above, the soil that passes through the soil hopper 20 and falls onto the feed conveyor 10 is substantially flattened to a uniform thickness or height by the gate 23 and the leveling roller 24. In addition, the weight of the feed soil on the feed conveyor 10 is measured by the soil feed measuring means (50). This follows the bulk density which can be seen by the weight signal from the soil supply measuring means 50. Accordingly, based on the weight signal from the soil supply measuring means 50, the hydraulic motor 70 driving the paddle mixer 64 rotates at high speed when the supply soil viscosity is high, and at low speed when the viscosity of the supply soil is low. Can be controlled to rotate.

Since the soil treatment system is commonly used in many yards, it is transferred from one soil treatment yard to another after completion of the soil treatment work for one yard with relatively few soils. For this purpose, as shown in FIG. 17, the soil processor is transported on the tow truck TR towed by the tow tractor TT. Such cargo to be transported by the traction tractor TT is particularly limited in dimensions such as length, width and height. Most importantly, unless the height of the machine to be transported by the retractor is low, the transport path is limited to roads free of tunnels, overpasses or similar obstacles. Parts of the machine may be disassembled prior to transport by the traction tractor TT. However, this is a very cumbersome and time consuming task, but the machine must be disassembled and reassembled when transferring from one soil treatment yard to another.

In most cases the height of the soil processor depends on the point at the height of the inlet frame 62 through which the soil entering the soil treatment vessel 60, which forms the main part of the soil treatment mechanism, and the added soil improver. As described above, during mutual stirring and mixing, the filled soil and the added soil improving material are transferred through the soil treatment vessel 60 in a substantially horizontal direction. Thus, for an effective soil treatment operation, the volume of the container can be expanded without increasing the height. Of course, the feed conveyor 10 for delivering the soil and the added soil improving material should be located at a point where the surface of the conveying belt 11 is higher than the soil treatment container (60). In addition, since the soil and the additives fall or feed through the soil hopper and the addition hoppers 20 and 30, respectively, they usually protrude above the transfer surface of the conveying belt 11. However, in this case, since the height of the soil treatment container 60 is limited and reduced, the positions of the soil hopper and the addition hopper 20 and 30 are also lowered to the same extent. In addition, since the feed conveyor 10 is set to the inclined state, the soil hopper 20 may be located at a lower height. In order to reduce the frequency with which the soil improving material consumed during the soil treatment operation is filled into the addition hopper 30, the hopper should be provided with as large a storage capacity as possible. The addition hopper 30 needs to have a sufficient volume for this purpose but it is located at the highest point as in FIG. However, since the additive supply port 41 is opened above the inclined portion of the feed conveyor 10 transfer belt 11, the position of the additive hopper 30 can be lowered at a corresponding angle. Also, the upper end of the foldable discharge conveyor 73 at the upper end may be folded to a lower position than the upper end of the addition hopper 30.

Moreover, the machine chamber 6 is located in a vacant space available behind the addition hopper 30 and above the soil treatment container 60 facing the discharge conveyor 73. In addition, the soil hopper 20 and the addition hopper 30 are adjacent to each other and the machine chamber 6 is also located near the addition hopper (30). Thus, the discharge conveyor 73 can be folded toward the empty space to generally lower the height of the soil processor.

Thus, the soil treatment machine can be reduced in small form, and in particular can be reduced in height so that it can be easily and smoothly transferred from yard to yard by the traction tractor TT without disassembling into a plurality of pieces. At the time of transfer, the riding type soil processor can be loaded and unloaded in the retractor TR in a smooth and fast manner using its own automobile drive. In addition, despite the simple structure, the machine is sufficiently mixed with the soil and the added soil improver in the soil treatment container 60 to mass-produce high quality soil products at high production rates.

Referring to FIG. 18, a controller 80 typically employed to control the operation of the soil processor is schematically shown. The controller 80 generates control signals for various operating parts of the machine based on signals from the sensors and detectors that make up the machine. More specifically, the controller 80 includes a data input section 81 for processing various input signals, a data conversion section 82 for processing signal amplification and A / D conversion, and predetermined arithmetic operations and signal processing in accordance with the input data. A data processing cross section 83 for performing the operation is included. Based on the signal processed in the data processing section 83, the controller generates a control signal for a control action component such as a hydraulic actuator and a control valve. The control signal is supplied to the working component from the data output section 85 after undergoing D / A conversion at the data conversion section 82.

Therefore, the signal from the load sensor 55 constituting the soil supply measuring means 50 is the fixed-quantity feed end 32 of the additive hopper 30 to adjust the feed rate of the additive soil improving material from the fixed-quantity supply cross-section 32. The controller 80 is controlled according to a preset mixing ratio to generate a control signal for the electric motor 46 that drives the metering feeder 42 of. At the same time, the controller 80 is connected to a hydraulic motor 70 which drives the paddle mixer 64 of the soil treatment container 60 to control the rotational speed of the paddle mixer 64 according to the signal from the load sensor 55. To generate a control signal.

Various operational data of the soil processor are stored in the internal memory 86, the contents of which are transmitted to the personal computer 88 via, for example, the I / O processor 87 and are thus interpreted by a predetermined algorithm. . The interpreted data is stored in an external storage 89 connected to the personal computer 88. In this way, various data of each soil processor are supplied to the personal computer 88 for storage and management purposes.

In this regard, in order to enhance the reliability of the soil treatment, it is desirable to store the operational data in the order of the steps of each soil treatment process or in other suitable formats that can be analyzed for later evaluation of the effectiveness of the particular treatment. In particular, it is necessary to store data such as the total amount of soil process for treatment, and the mixing ratio of the soil to the added soil improver used. The mix ratio data should be sequential data. For this purpose, the output signal of the load sensor 55 of the soil supply measuring means 50 and the data on the rotational speed of the electric motor 45 of the fixed-quantity feeder 42 are stored in the memory 86 on the basis of the sequence. It is a structure. This structure provides accurate data on the mixing ratio of added soil improver to soil. Indeed, improved soil is produced in the soil treatment container 60. In the soil treatment container 60, the soil and the added soil improving material are mixed with each other and simultaneously transferred by the mixing and feeding action of the paddle mixer 64. In this regard, the controller should be configured to change the rotational speed of the paddle mixer 64 in relation to the viscosity of the soil to be treated. Thus, the controller is configured not only to receive rotational speed data of the paddle mixer 64 but also to record these coefficients of operation of each soil treatment.

Upon completion of the soil treatment operation, these operational data can be transmitted to the personal computer 88 connected to the I / O treatment section 87 of the controller. As mentioned above, the treated and interpreted operational data can be used for later analysis and evaluation of operating conditions relating to the properties of the treated soil, such as, for example, flexible magnetic disks, magneto-optical disks, memory cards, and the like. It can be stored in an external storage device 89 connected to a personal computer 88 which is a volatile data recording means.

Soil treatment vessel 60 is limited in length. On the other hand, the soil and the added soil improving material must be uniformly mixed while being transferred through the length of the soil treatment container 60 from the inlet 62 to the outlet 63. In this regard, the soil handler of the present invention, which is intended to be used in small soil treatment yards, should be capable of small turns when moving around the yard, while at the same time having a small structure and easy transfer from one yard to another. Should be small in size. The size of the soil treatment vessel, in particular the length of the soil treatment vessel, which occupies a large portion of the soil treatment vessel, has a large influence on the size of the machine. Of course, the soil treatment container 60 should not be reduced to a size small enough to impair its soil treatment capacity or efficiency.

In view of the above point of view, the most preferred one, i.e. satisfactory mixing capacity of the soil and the added soil improver, should be given to the nature of the treated soil. In the nature within the acceptable range, the length of the soil processor should be reduced in a way that enhances its soil treatment efficiency. In this regard, there has been a study on the relationship between paddle mixer 64 structure and mixing efficiency. Each paddle mixer 64 has a number of paddles 66 attached on the circumference of the rotary shaft 65. In order to supply the contents of the soil treatment container 60 with mixing, the paddle 66 is located at a point displaced helically around the circumference of the rotary shaft 65.

In the particular embodiment shown in FIG. 19, the spirally arranged paddles PD around the rotary shaft RS of the paddle mixer PM are angularly displaced 90 degrees to each other. Thus, the spacing between the paddles PD located at the fourth point in the helical arrangement determines the axial paddle pitch P. The paddle PD position on the rotary shaft RS of the two paddle mixers PM is mutually displaced on the axis by a quarter of the paddle pitch P. Accordingly, the paddles PD mounted to two adjacently positioned rotary shafts RS face each other at small intervals and are spaced apart on the axis corresponding to the paddle pitch P. FIG. As a result, when viewed in the axial direction of the rotary shaft RS or in the transmission direction of the paddle mixer PM, the paddle PD on the two rotary shafts RS is overlapped at the paddle pitch P position, and at the intermediate position. Spaced apart from each other.

When the paddle mixer PM is operated, the treatment material on the outer side of the rotary shaft RS in the soil treatment container 60 is lifted up in these areas where the paddle PD of the two rotary shafts RS moves apart from each other. The thrown and thrown up portions of the treatment material are pushed down as the paddles PD move to face each other and merge in the space between the two rotary shafts RS. When the treatment material moves downward, it moves toward the overlapped portion and is mixed by the action of the paddle PD acting on the treatment material from the opposite side of the paddle. That is, in terms of mixing efficiency, the material being processed is most efficiently mixed at the central point where the paddles PD of the two rotary shafts overlap.

The degree of mixing at various parts of the treatment vessel is filled by the paddle mixer PM with the treatment material filled into the treatment vessel and over a predetermined length of transmission in the direction indicated by the arrow in FIG. 19 starting at the initial discharge position ST. It was measured after mixing. As soon as the filler arrives at a predetermined stop position, the paddle mixer PM stops operating and measures the degree of mixing at various positions. For measurement purposes, the cross-sectional area of the processing vessel is a plurality of small sampling areas AR in the shape of a checkerboard separated by an interval MB of a predetermined width in the transmission direction and an interval ML similar to the predetermined width in a direction perpendicular to the transmission direction. Divided into Treatments were taken from each small sampling area (AR) in a transverse arrangement divided by intervals (MB) to measure the difference in content of added soil improver. The results of these measurements are shown in FIG. 20, with the vertical axis representing the mixing degree, the horizontal axis representing the length of the treatment vessel, and the references P ₁ , P ₂ , P _2.5 , P ₃ , P ₄ and P ₅ representing the paddle pitch. Indicates.

As shown in Fig. 20, when the paddle pitch of the paddle mixer PM is 2.5, the mixing degree is in the range of 0.8 to 1, i.e., the contents of the soil improving material added to all the small sampling areas AR of the transverse arrangement of the vessel. It is shown that this is almost uniform value. Although the paddle pitch increased further, substantially no improvement in mixing was observed.

From the results of the above experiment, when the treatment material transmission length of the paddle mixer is 2.5 times or more of the paddle pitch and preferably 3 times or more in consideration of the variation of the soil characteristics, the soil to a practically sufficient level by the paddle mixer of the minimum length And it was confirmed that the added soil improver can be mixed uniformly. Thus, paddles 66 are arranged in three cycles around each rotary shaft 65 of the paddle mixer. That is, the distance between the inlet 62 and the outlet 63 of the soil treatment container 60 is arranged to be about three times the paddle pitch (P). This structure allows the soil treatment vessel 60 of minimum length to mix the soil and the added soil improver uniformly to a sufficient degree. In addition, from the viewpoint of the treatment efficiency of the soil treatment container 60, the outer diameter of the paddle 66 is preferably about the same as the paddle pitch (P). Roughly, in most small soil treatment vessels 60 that can mix soil and additive soil improver with satisfactory efficiency, the overall length of the soil treatment vessel 60 is three times the paddle pitch P and at the same time (66) Three times the outer diameter. Due to this structure, the soil treatment container 60 can be reduced to a minimum length, that is, a small overall. Thus, this facilitates small turns and facilitates transport, as well as reducing the length of the soil treatment machine.

With regard to the mixing efficiency in the soil treatment container 60, this changes according to the characteristics of the soil to be treated. As described above, when the length of the soil treatment container 60 is reduced, uniform mixing of the treatment materials may be difficult. In particular, when the moisture content of the soil to be treated is large, its viscosity can correspondingly increase, making it difficult to uniformly mix the additive with the soil to be treated. On the contrary, when the moisture content is extremely low, it is difficult to maintain a stable mixing operation or to obtain sufficient reaction between the soil and the additive to produce a soil product having a nodular structure, especially when lime is used as the additive soil improver. This can happen. Therefore, in order to perform the soil improvement process in the soil treatment container 60 stably and accurately, it is necessary to adjust the water content of the soil for treatment to some extent. In this regard, the water content of the treated soil should preferably not exceed 40% but at least 30%. Therefore, the water content of the soil for treatment is adjusted before being introduced into the soil treatment vessel 60. In particular, when the water content of the treated soil is 40% or more, the dry soil or lime is adjusted to 40% or less by mixing therein. On the other hand, if the water content of the treated soil is 30% or less, it is increased by using a sprinkler before filling the soil into the treated container.

In the above embodiment, in order to keep the mixing ratio of the additive to the treated soil constant, the feed hopper 42 of the soil hopper 20 and the additive hopper 30 is provided with a feed conveyor provided with a soil supply measuring means 50. 50 is open to the top. In this regard, Figure 21 shows an alternative structure that can accurately control the mixing ratio of the additive to the soil for treatment in the soil treatment vessel 60 during treatment.

In particular in this example, the soil treatment container 60 is provided with a large opening 60a which is located on its front ceiling and serves as an inlet opening for both the soil and the added soil improving material. The soil hopper 20 is located in front of the soil treatment vessel 60, while the addition hopper 30 is located on its rear side at a predetermined distance from the soil hopper and supplies its quantity open toward the soil treatment vessel 60. It has a cross section 32.

The displacement volume of the paddle mixer 64 in the soil treatment vessel 60 per cycle is the number of paddle mixers 64 in the soil treatment vessel 60 and the working surface area of the paddle 66 attached on the rotating shaft 65. And number. Thus, the soil feed rate is determined by multiplying the rotational speed by the total displacement volume of the paddle mixer 64. On the other hand, the addition hopper 30 is provided with a fixed-quantity feeder 42, the feed rate of which is controlled by the electric motor 46. Therefore, if the hydraulic motor 70 driving the rotary shaft 65 of the paddle mixer 64 rotates at a constant speed, the soil can be transmitted at a constant rate through the soil treatment container 60. For this purpose, the soil is fed directly into the soil treatment container 60 at a constant rate from the soil hopper 20 having the capacity of retaining excess soil thrown out above the soil transfer rate of the paddle mixer 64. In addition, the soil treatment container 60 is provided with a gate 75 for limiting the soil transfer rate. In this case, the soil feed rate is determined based on the rotational speed of the hydraulic motor (70). For smooth and efficient soil mixing and transfer, it is desirable to place the gate 75 in a position that covers at least about 20% of the facing paddle surface.

The lower open end of the metering feeder 42 of the addition hopper 30 is located on the downstream side of the gate 75. That is, as shown in FIG. 21, in this case, the treatment container includes three regions, namely, a soil supply zone Za, an additive feed zone Zb, and a soil and additive mix zone Zc. Due to the treatment vessel of such a structure, the mixing ratio of the added soil improving material to the treatment soil can be accurately controlled by constantly operating the hydraulic motor 70 and the electric motor 46 at a predetermined speed.

Due to the change in the load condition, the rotational speed of the hydraulic motor 70 may be fluctuated. For example, the load condition of the hydraulic motor 70 for driving the paddle mixer 64 changes depending on the amount of excess soil stored in the soil hopper 20. That is, the rotational speed of the hydraulic motor 70 is fluctuated by the change in the quantity of soil stored in the soil hopper 20 to receive the soil supply intermittently. In addition, fluctuations in the loading conditions of the hydraulic motor 70 may be caused by a change in the resistance, that is, by the resistance of the mixture in the soil treatment container 60. Therefore, the additive feed rate from the metering feeder 42 to the soil treatment container 60 should be changed in a manner that follows the change occurring in the rotational speed of the hydraulic motor 70 under fluctuating load conditions. By varying the additive feed rate in this manner in relation to the soil transfer rate, the soil is continuously transferred through the soil treatment vessel 60 by mixing and transferring the paddle mixer 64, so that the additive soil improver is always at a constant rate. Mixed into the soil for treatment. For this purpose, the rotational speed of the electric motor 46 is adjusted in such a way that it follows the displacement occurring in the rotational speed of the hydraulic motor 70.

The mixing rate control means shown in FIG. 22 includes a mixing rate setting section 80a and a motor control section 80b, and are arranged to cause this effect. The mixing ratio setting section 80a includes input means for inputting an appropriate mixing ratio of the soil-added soil improving material to the treated soil to be mixed. According to the mixing ratio written in the mixing ratio setting section 80a, the rotational speed ratio of the electric motor 46 to the hydraulic motor 70 is calculated by the controller. From the rotational speed sensor 81, the motor control section 80 receives the rotational speed of the hydraulic motor 70, that is, the signal of the paddle mixer 64. Since the soil transfer rate through the soil treatment container 60 depends on the rotational speed of the paddle mixer 64, the rotation signal of the electric motor 46 which controls the additive feed rate of the fixed-quantity feeder 42 of the additive hopper 30. It is output as a control servo circuit for the servo circuit 82.

The additive feed rate by the metering feed end 32 of the additive hopper 30 is determined by the rotational speed of the electric motor 46 driving the rotary shaft 43. Therefore, when the rotational speed of the hydraulic motor 70 is changed, the controller 80 is an electric motor 46 necessary to maintain a predetermined mixing ratio of the signal from the rotational speed sensor 81, the added soil improving material to the processing soil. The calculation is performed based on the rotational speed of the electric motor 46 and the rotational speed of the electric motor 46 changed in response to a signal from the controller in such a manner as to follow the rotational speed of the hydraulic motor 70 and the rotational speed of the hydraulic motor 70. Therefore, despite the change in the rotational speed of the hydraulic motor 70, the predetermined mixing ratio of the added soil improving material to the processing soil is kept constant.

Considering the geographic location of the foundation work site where soil is treated for other purposes, such as excavation or embankment, the soil treatment plant does not need to increase the size of the treatment facility, as long as it is restricted to a specific area. In addition, in collecting and treating the excavated soil, the same reservoir may be used for the storage of the loaded treated soil and for the storage of the treated soil to be taken out. In this way, the effective use of the soil treatment plant itself can significantly improve the space problem. Therefore, in view of reducing costs and preventing environmental pollution by dump trucks, it is advantageous to construct a relatively small scale soil treatment facility near an area where a need for soil treatment increases or a specific service area.

Claims (18)

delete delete delete A main frame mounted on the vehicle and providing thereon at least one soil supply stage, soil treatment stage, and soil release stage; The soil supply stage including at least one soil hopper and an addition hopper for supplying soil and an additional soil improving material to the soil treatment stage; A soil treatment container mounted on the main frame and having an inlet opening on the upper side of the front end and an outlet opening on the bottom side of the rear end thereof for receiving the treatment soil and the added soil improving material, rotatably supported in the soil treatment container; The soil treatment stage including rotary mixing means and the like, which are applied to pass through the soil treatment container and are substantially horizontally transmitted while being uniformly mixed with each other; And A soil release stage comprising a soil release conveyor adapted to receive the treated soil through the outlet opening of the soil treatment vessel and to transfer it in a predetermined direction; The rotary mixing means is composed of a rotary paddle combination unit extending in the axial direction in the soil treatment container, each of the rotary paddle combination unit has a plurality of mixing paddles attached on the rotary shaft at a predetermined pitch, The rotary shaft of the rotary paddle combination unit is adapted to rotate in a direction opposite to the axis of rotation of the rotary paddle combination unit adjacent thereto; The rotating shaft of the rotary paddle combination unit of the paddle mixer is supported by bearings at its front and rear ends, and the inlet and outlet openings of the soil treatment container are located between the bearings. Soil handler. A main frame mounted on the vehicle and providing thereon at least one soil supply stage, soil treatment stage, and soil release stage; The soil supply stage including at least one soil hopper and an addition hopper for supplying soil and an additional soil improving material to the soil treatment stage; A soil treatment container mounted on the main frame and having an inlet opening on the upper side of the front end and an outlet opening on the bottom side of the rear end thereof for receiving the treatment soil and the added soil improving material, rotatably supported in the soil treatment container; The soil treatment stage including rotary mixing means and the like, which are applied to pass through the soil treatment container and are substantially horizontally transmitted while being uniformly mixed with each other; And A soil release stage comprising a soil release conveyor adapted to receive the treated soil through the outlet opening of the soil treatment vessel and to transfer it in a predetermined direction; The rotary mixing means is composed of a rotary paddle combination unit extending in the axial direction in the soil treatment container, each of the rotary paddle combination unit has a plurality of mixing paddles attached on the rotary shaft at a predetermined pitch, The rotary shaft of the rotary paddle combination unit is adapted to rotate in a direction opposite to the axis of rotation of the rotary paddle combination unit adjacent thereto; And said soil treatment container has a structure having a length of approximately three times the axial pitch of a paddle on said rotating shaft of said rotating paddle combination unit of said paddle mixer. The method of claim 5, And said paddle has a structure having a diameter corresponding to one third of said full length of said soil treatment container. A main frame mounted on the vehicle and providing thereon at least one soil supply stage, soil treatment stage, and soil release stage; The soil supply stage including at least one soil hopper and an addition hopper for supplying soil and an additional soil improving material to the soil treatment stage; A soil treatment container mounted on the main frame and having an inlet opening on the upper side of the front end and an outlet opening on the bottom side of the rear end thereof for receiving the treatment soil and the added soil improving material, rotatably supported in the soil treatment container; The soil treatment stage including rotary mixing means and the like, which are applied to pass through the soil treatment container and are substantially horizontally transmitted while being uniformly mixed with each other; And A soil release stage comprising a soil release conveyor adapted to receive the treated soil through the outlet opening of the soil treatment vessel and to transfer it in a predetermined direction; And a feed conveyor adapted to receive the processing soil and the added soil improving material from the soil hopper and the addition hopper and to supply the received soil and the added soil improving material to the inlet opening of the soil processing container. Soil handler with traveling means. The method of claim 7, wherein The feed conveyor has an inclined transfer surface for transferring the received soil and the added soil improving material in an obliquely upward direction toward the inlet opening of the soil treatment container, wherein the soil hopper is the transfer surface of the feed conveyor. Wherein said additive hopper is located above the transmission surface on said downward side of said soil hopper. The method of claim 7, wherein The discharge conveyor is applied to transfer the treated soil in a direction inclined upwardly from a position below the outlet opening of the soil treatment container, the upper end of the traveling means characterized in that the extension is provided Soil handler with. The method of claim 7, wherein And a mechanical chamber positioned above the rear end of the soil treatment container provided with the outlet opening. The method of claim 7, wherein Further comprising a soil supply measuring means for measuring the amount of the soil for processing supplied from the soil hopper, wherein the addition hopper is measured by the soil supply measuring means to maintain a constant mixing rate of the added soil improving material to the treated soil Soil processor having a traveling means characterized in that it is applied to adjust the supply rate of the added soil improver in relation to the soil transfer rate. A main frame mounted on the vehicle and providing thereon at least one soil supply stage, soil treatment stage, and soil release stage; The soil supply stage including at least one soil hopper and an addition hopper for supplying soil and an additional soil improving material to the soil treatment stage; A soil treatment container mounted on the main frame and having an inlet opening on the upper side of the front end and an outlet opening on the bottom side of the rear end thereof for receiving the treatment soil and the added soil improving material, rotatably supported in the soil treatment container; The soil treatment stage including rotary mixing means and the like, which are applied to pass through the soil treatment container and are substantially horizontally transmitted while being uniformly mixed with each other; And A soil release stage comprising a soil release conveyor adapted to receive the treated soil through the outlet opening of the soil treatment vessel and to transfer it in a predetermined direction; The rotary mixing means is composed of a rotary paddle combination unit extending in the axial direction in the soil treatment container, each of the rotary paddle combination unit has a plurality of mixing paddles attached on the rotary shaft at a predetermined pitch, The rotary shaft of the rotary paddle combination unit is adapted to rotate in a direction opposite to the axis of rotation of the rotary paddle combination unit adjacent thereto; The soil hopper is positioned on one end of the soil treatment vessel to directly supply soil for treatment, and the addition hopper is arranged to supply the additive soil improver to the soil treatment vessel from a predetermined distance from the soil hopper and from the rear side. Soil processor having a driving means, characterized in that. The method of claim 12, And an additive feed rate control means provided to the additive hopper to adjust the additive feed rate to the soil treatment container, wherein the additive feed rate control means allows adjusting the feed rate of the additive in relation to the rotational speed of the rotary shaft. Soil processor having a traveling means to. The method of claim 13, And said soil treatment container comprises a gate member for controlling the soil feed rate therefrom. The method according to claim 13 or 14, The addition hopper is provided with a rotary fixed quantity supply means, wherein the additive feed rate control means of the variable speed electric motor based on a signal from the variable speed electric motor for driving the fixed quantity supply means and the rotational speed sensor connected to the rotary shaft. And a controller adapted to control the rotational speed. The method of claim 7, wherein The traveling means is a soil processor having a traveling means characterized in that the tracked traveling means equipped with a pair of crawler belts. The method of claim 7, wherein The rotary mixing means is composed of a rotary paddle combination unit extending in the axial direction in the soil treatment container, each of the rotary paddle combination unit has a plurality of mixing paddles attached on the rotary shaft at a predetermined pitch, And a rotary shaft of the rotary paddle combination unit is adapted to rotate in a direction opposite to the rotation axis of the rotary paddle combination unit adjacent thereto. The method of claim 17, Wherein one of the rotary shafts of the rotary paddle combination unit is driven from a hydraulic motor and rotatably connected to the rotary shaft (s) of the other rotary paddle combination unit (s).