JP3375588B2 - Self-propelled soil improvement machine - Google Patents

Description

Detailed Description of the Invention

[0001]

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

[0002]

2. Description of the Related Art As soil improvement treatment, for example, in the case of solidifying soil, it is carried out by mixing the soil with a soil improving material such as a solidifying material. As a typical method, a mixing method using a stirring means and a crushing method equipped with a rotary hitting element are conventionally known. The mixing means mixing method, provided mixed-means in the mixing container, without to transfer a predetermined direction while stirring and mixing the soil and soil improvement agent in the mixing vessel, soil and soil improvement A continuous type that continuously supplies wood to generate improved soil and continuously discharges the improved soil thus generated has been developed and put into practical use. Further, a crushing type soil improvement machine as another method of soil improvement treatment is disclosed in, for example, Japanese Patent Application Laid-Open No. 9-195265. This crushing type soil improvement machine is equipped with a crusher consisting of a rotary impactor so that the earth and sand and the soil improvement material are dropped from the upper position toward the rotary impactor, and the rotary impactor is rotated during this period. By doing so, the earth and sand and the soil conditioner are hit and crushed.

The soil improvement machines constructed as described above include a stationary type and a self-propelled type. The self-propelled soil improvement machine, the place where the sediment is generated or its vicinity,
Compared with a stationary soil improvement plant that requires long-distance transportation of the soil to be treated or the produced improved soil by a dump truck, etc., because soil improvement can be easily performed at or near the location where the improved soil is consumed. Then, it is advantageous in terms of production cost of the improved soil and prevention of traffic obstacles.

The traveling means for self-propelled soil improvement may be of the wheel type, but from the viewpoint of traveling stability, particularly traveling stability in a place where the scaffolding is poor, a crawler type traveling means is adopted. Is common. Then, a main body frame is connected and provided on the traveling means, and all the equipment, members and the like necessary for soil improvement are installed on the main body frame. As equipment and the like required for soil improvement, first, there is a mixing means for mixing the soil and the soil improving material, and means for supplying the soil and the soil improving material to the mixing means. Furthermore, it is desirable to have a structure that also includes a means for conveying the improved soil produced by the mixing means.

Here, as the mixing method of the soil and the soil improving material by the mixing means, there are the mixing method, the crushing method, etc. as mentioned above. Is configured to continuously supply sediment and soil improvement material from above. As the soil quality improving material, for example, when solidifying earth and sand, a material containing lime, cement or the like as a main component is used. In order to continuously perform soil improvement, a configuration including a soil improvement material hopper consisting of a storage tank of a predetermined capacity, and a feeder for supplying the soil improvement material from the soil improvement material hopper by a predetermined amount substantially continuously. To do.

The soil to be improved in soil quality is usually generated by excavation. In a self-propelled soil improvement machine,
It is also possible to bring the excavated soil to the excavation site and directly perform soil improvement treatment. Further, it is also possible to set a yard, accumulate a predetermined amount of earth and sand in this yard, and bring in a soil improvement machine to this accumulation place to improve the soil quality of the accumulated earth and sand. If the soil improvement machine is of a self-propelled type, it can be reused in multiple yards, so efficient soil improvement can be performed in a small yard.

By the way, the soil to be treated is mainly soil generated by excavation, and various solid foreign matters such as rocks, debris, concrete fragments, glass, and metal are mixed in the excavated soil. There is a case. It is necessary to separate and remove the solid foreign matter from the earth and sand for the reason that such solid foreign matter is not a target of soil improvement treatment and has a bad influence on the operation of the mixing means. A sieve is used to separate soil and solid foreign matter, and a vibrating sieve is used to perform particularly quick and efficient sieving.
As a pretreatment for the soil improvement treatment, soil and solid foreign matter can be sieved in advance, but it is desirable to install a sieve on the soil machine itself in order to improve the efficiency and speed of the treatment. For example, attach a vibrating screen to the earth and sand supply means,
Using a working machine equipped with an excavation mechanism, for example, a hydraulic excavator, as the means for loading the earth and sand, the earth and sand introduced into the earth and sand supply means is sifted through this sieve, only the earth and sand is taken into the mixing means, and solid foreign matter is discharged to the outside To configure.

[0008]

By the way, there are various properties of earth and sand to be subjected to soil improvement treatment, and the condition is not constant. For example, there are free-flowing sandy soils that are significantly weathered and have an extremely low water content, and clayey soils that have a high water content and a high viscosity. In addition, some of them are in the state of clods, and the size and binding strength of the clods are not uniform. Sandy soil can be easily separated from solid matter, so even if a large amount of sand is added,
The earth and sand can be smoothly, reliably, and rapidly separated from the solid foreign matter and taken into the earth and sand storage part of the earth and sand supply means. On the other hand, clay-like soil may become clogged with a sieve and may not be easily taken into the sediment storage part. Further, since a soil block larger than the size of the sieve does not pass through the sieve as it is, it is necessary to disintegrate the block into small pieces that can pass through the sieve. Therefore, even if the sand is sifted in the same manner, the sifting condition changes depending on the nature and state of the sand to be treated.

It is desirable to change the residence time on the sieve when sieving sandy soil and when sieving clayy soil. In addition, for earth and sand containing a large amount of clod, it is desirable to prolong the residence time on the sieve and to give vibration as large as possible in order to collapse the clod. Further, since the soil improvement machine is self-propelled, the ground on which the traveling means is grounded is not necessarily a flat surface, and soil improvement processing is performed even on a sloped land. When the treatment is carried out on a sloping ground, the sieving is naturally inclined accordingly, so that sieving may not always be carried out smoothly and reliably depending on the position and posture of the soil improvement machine.

As described above, the self-propelled soil improvement machine is extremely convenient in that it can be carried into a desired treatment site and can improve the soil with various characteristics and conditions. Since various soils must be treated, and the condition of the ground at the work site where the treatment work is performed is not uniform, the conditions for sieving sediments and solid foreign matter in soil improvement machines are arbitrary. It is desirable to be able to set to. Therefore, an object of the present invention is to make it possible to adjust the sieving so as to have the optimum sieving conditions according to the nature and condition of the earth and sand.

[0011]

To achieve SUMMARY OF for the foregoing and other objects mixed, the present invention includes a body frame, a traveling means provided on the body frame <br/>, provided on the body frame
Means and a support provided on one longitudinal side of the body frame.
Tilt frame in which one end is tiltably connected to the holding member
And, provided on this tilting frame via a spring,
Sediment input section equipped with a sieve that separates solid foreign matter from sediment
And provided between the sieve and the tilting frame,
A vibrating means for vibrating the sieve and one end of the supporting member.
, The other end is connected to substantially the center of the tilting frame,
The angle of the tilting frame is adjusted by the expansion and contraction operation.
A hydraulic cylinder is provided below the earth and sand input section,
A conveyer conveys the earth and sand in the mixing means.
And, the soil improvement material is supplied to the earth and sand on this conveyor.
A soil improvement material supply means is provided.

[0012]Also,Supplied from soil improvement material supply means
Soil improvement material is transported by thisConveyorSupply toConfigured to
However, the configuration may be such that it is directly supplied to the mixing means. Gravel throw
At the inlet, the solid foreign matter separated by the sieve is
Move in a specified direction by vibration, and from the end position
It is discharged by dropping it.
DepartmentEnd of the sieve installed inHas a solid foreign matter discharge section
Ru.

[0013]

[0014]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. 1 and 2 show the overall construction of the self-propelled soil improvement machine. First, in FIG. 1, reference numeral 1 denotes a traveling body, and the traveling body 1 is configured to include a crawler type means having a crawler belt 1a. Although the traveling body 1 shown in the figure is a crawler type traveling means, this prevents the whole vehicle body from becoming unstable due to an impact load when the earth and sand are introduced in consideration of the case where the earth and sand are intermittently introduced. However, it may be configured by a wheel-type traveling body.

A main body frame 2 constituting a chassis is connected to the traveling body 1, and the main body frame 2 is provided with various mechanisms and devices. In this body frame 2, the machine front (body frame to the left side of FIG. 1
When one side in the longitudinal direction of the soil 2) , the earth and sand supply means 3 is installed at the foremost position, and the soil quality improving material supply means 4 is provided at a position behind the earth and sand supply means 3. There is. The earth and sand supplied from the earth and sand supply means 3 and the soil improvement material supplied from the soil improvement material supply means 4 are supplied to the mixing means 5 arranged at their lower positions. Further, the rear position of the mixing means 5 (main body frame
An improved soil discharge conveyor 6 is provided in the lower part of the chamber 2 on the other side in the longitudinal direction) .

The earth and sand are supplied to the earth and sand supply means 3 by means of an inputting means. As the inputting means, for example, a working machine equipped with an excavating mechanism, and a typical hydraulic excavator or the like is used. Here, the earth and sand put into the earth and sand supply means 3 contains solid foreign matter and the like that interfere with the soil improvement treatment. The earth and sand supplying means 3 sends the earth and sand from which solid foreign matters have been separated into the mixing means 5. Then, the separated solid foreign matter or the like is discharged to the outside. In order to separate the sediment from the solid foreign matter and the like, the sediment supply means 3 includes a sediment input section 10 and a conveyor 11 for conveying the sediment collected from the sediment input section 10 toward the mixing section 5. ing. Further, the soil quality improving material supply means 4 includes a soil quality improving material hopper 12 and a feeder 13.
The soil improving material hopper 12 stores a predetermined amount of soil improving material, for example, solidifying material such as lime and cement, and the feeder 13 supplies the soil in the soil improving material hopper 12 in a fixed amount. I am able to do it. Therefore, the amount of earth and sand supplied from the earth and sand supply means 3 is detected by some method, or the amount of earth and sand is supplied in a fixed amount, and the amount of soil improvement material supplied from the feeder 13 is controlled based on this. The mixing ratio of earth and sand and soil improvement material can be kept constant.

The structure of the mixing means 5 is shown in FIGS.
The mixing means 5 is provided with a mixer 21 for transferring the soil and the soil improving agent while stirring and mixing the mixture in the substantially rectangular mixing container 20. The mixer 21 is composed of a large number of paddles 23 (or continuous screws) arranged on the outer peripheral surface of the rotary shaft 22 at predetermined pitch intervals in the spiral direction, and the mixer 21 is provided with an even number of two or more. .
Further, one of the rotary shafts 22 constituting the mixer 21 is rotatably driven by a hydraulic motor 24, and a gear or the like is transmitted between this rotary shaft and the other rotary shafts. It is connected via means 25. Therefore, when the hydraulic motor 24 is rotationally driven, all the rotary shafts 22 are rotated, and the adjacent rotary shafts are rotated in the directions opposite to each other as indicated by the arrow in FIG.

In the mixing container 20, at the front position in the transfer direction by the mixer 21, a receiving portion 26 having an open upper side is provided.
The lower side is opened at the rear side in the transfer direction to form the improved soil discharging section 27. Therefore, the end of the conveyer conveyor 11 as a means for conveying the sand in the earth and sand supply means 3 and the feeder 13 of the soil improvement material supply means 4 are open to the receiving portion 26 of the mixing container 20, and the discharge conveyor 6
Faces the lower position of the discharge portion 27. by this,
While the earth and sand supplied from the receiving part 26 and the soil improving material are stirred and mixed by the mixer 21 in the mixing container 20, the improved soil in which they are uniformly mixed is generated, and the improved soil is discharged from the discharging part 27. Will be discharged from. Although the feeder 13 directly supplies the soil-improving material to the mixing container 20, the feeder 13 may be provided with the feeder 13 opened.

Here, the earth and sand feeding section 10 which constitutes the earth and sand supply means 3 has the structure shown in FIGS. 5 to 7.
That is, it has a frame-shaped earth and sand storage unit 30 that is elongated in the transfer direction of the transfer conveyor 11, and a hopper unit 31 that is open on the downstream side in the transfer direction of the transfer conveyor 11 is provided on the top of this earth and sand storage unit 30. . As a result, earth and sand are loaded from the upper end opening of the hopper unit 31 using a bucket of a hydraulic excavator or the like. A sieving 32 is attached to the hopper unit 31. The sieving 32 separates and removes solid foreign matters from the input sediment, and only the sediment is received in the sediment storage unit 30. The solid foreign matters are removed from the end of the sieve 32. The sheet is discharged to the outside from a discharge section 32a provided in connection with the section. In order to improve the sieving function of the sieve 32, the hopper portion 31 is supported by the main body frame 2 via a vibrating means. Here, the earth and sand storage part 30 is connected to the hopper part 31, and therefore, the vibration extends to the whole earth and sand input part 10. However, the earth and sand storage part 30 is separated from the hopper part 31 and independently of the main body frame. It can also be held fixedly with respect to 2.

A support member 33 is provided on the front end side of the main body frame 2 in order to support the earth and sand input portion 10 so that the main body frame 2 can vibrate. The support member 33 is connected to the main body frame 2 so as to rise obliquely upward toward the front (to the right in FIG. 5).
a, a horizontal portion 33b connected to the tip of the projecting portion 33a and extending horizontally to the rear side, that is, the main body frame 2 side, and a bridge between the end portion of the horizontal portion 33b and the main body frame 2. It is composed of a substantially box-shaped structural member having a vertical portion 33c. The support members 33 are provided on both left and right sides of the main body frame 2, and the upper ends of the projecting portions 33 a of both support members 33 are bridged and connected by a beam 34.

Further, the tilting frame 3 is attached to the supporting member 33.
5 are connected and provided. The tilting frame 35 is substantially U-shaped, and both ends thereof are connected to the beam 34 so as to be vertically rotatable. For this reason, the bracket 33 is attached to the end of the projecting portion 33a of the support member 33.
d is attached, and brackets 35a are attached to both ends of the tilting frame 35. Both brackets 33d and 35a are connected via a pivot pin 36, whereby the tilting frame 35 can be tilted in the vertical direction about the position of the pivot pin 36.

The earth and sand input portion 10 is elastically supported by the tilting frame 35. That is, two spring seats 37 are provided on each of the left and right sides of the tilting frame 35, and two spring receiving members 38 are provided on each of the left and right side surfaces of the sediment storage section 30 in the sediment input section 10. It is installed. A spring 39 is elastically mounted between the spring seat 37 and the spring receiver 38, and the earth and sand input part 10 is elastically connected to the tilting frame 35 via the spring 39. In order to vibrate the earth and sand input part 10, a vibrating means 40 is mounted between the earth and sand input part 10 and the tilting frame 35. The vibrating means 40 has a rotary shaft 41 provided in the vicinity of the mounting position of the sieve 32 in the hopper portion 31, and both ends of the rotary shaft 41 project from the left and right side surfaces of the earth and sand storage part 30. Is a rotating drum 42a, 42
b is attached. Both of these rotary drums 42a,
The center of gravity of 42b is displaced from the center by a predetermined amount. Therefore, when the rotary shaft 41 is rotated, the rotary drums 42a and 42b mounted on both ends of the rotary drum 41 rotate, and the center of gravity changes. Become. As a result, the earth and sand input part 10 vibrates so as to swivel approximately vertically.

The rotating shaft 41 has one rotating drum 4
A sprocket 43a (or a pulley) is provided on the outer side of 2a, and a rotation driving means 44 composed of a hydraulic motor or an electric motor is installed on the tilting frame 35. The rotation drive means 44 is a drive sprocket 45a.
(Or a driving pulley) is driven to rotate, and the driving sprocket 45a and the sprocket 43 on the rotary shaft 41 side.
A power transmission means 46a composed of a chain (or a belt) is wound around and provided between a and a. A sprocket 43b is also provided on the rotary drum 42b side, and the sprocket 43b is provided with a rotation transmission means 46b wound between the sprocket 43b and a free-rotating sprocket 45b mounted on the tilting frame 35. That is, between the rotary drum 42a side and the rotary drum 42b side, the rotation driving means is provided on one side and the rotation driving means is not provided on the other side.
The same structure as the transmission means by the rotary drive means is provided.

As described above, the earth and sand input portion 10 is oscillatably connected to the tilting frame 35, and the tilting frame 35 is adjustable in angle with respect to the support member 33. For this purpose, a hydraulic cylinder 47 is provided between the support member 33 and the tilting frame 35. Therefore, when the hydraulic cylinder 47 is expanded and contracted, the tilting frame 35 swings up and down about the pivot pin 35. As a result, the angle of the tilting frame 35 and the earth and sand input part 10 connected to it changes. Here, changing the angle of the earth and sand input part 10 is
The purpose is to adjust the angle of the sieve 32, and
When the whole is tilted around the pivot pin 36, the sieve 32
As shown in FIG. 8, it tilts about the fulcrum position S over the range of the angle θ. When the sieve 32 has a discharge direction of solid foreign matter or the like as indicated by an arrow F, the angle of the discharge direction F with respect to the horizontal plane T changes. Therefore, when the sieve 32 becomes a horizontal surface,
Not only the discharge direction F may be diagonally downward, but the discharge direction F may be diagonally upward. However, discharge direction F
The angle in the diagonally upward direction is relatively small. Here, when the tilting frame 35 is in a predetermined tilt angle state, it can be locked (held) in that angle state. This lock can be achieved by configuring so as to lock the supply and discharge of the hydraulic pressure to the hydraulic cylinder 47, but by providing a fixing means using a screw or the like, it is possible to fix it at a desired position stepwise or steplessly. You can

Further, the outriggers 48 are provided on the left and right at positions near the connecting portion of the main body frame 2 to the supporting member 33.
Is installed. The outrigger 48 is for tilting the entire vehicle, and is arranged in front of the crawler belt 1 a that constitutes the traveling body 1, that is, in the mounting portion of the earth and sand throwing portion 10. The outrigger 48 is capable of expanding and contracting between the state shown by the solid line in FIG. 1 and the state shown by the phantom line. When the outrigger 48 is operated so as to extend, the entire vehicle has the track 1a. Behind the ground plane,
That is, the earth and sand feeding section 10 is tilted in the direction of lifting around the end on the side where the discharge conveyor 6 is extended.

FIG. 9 shows a state in which soil improvement processing is being performed by using the soil improvement machine having the above structure. In the figure, SC is a sediment collecting point, and the sediment accumulated at this collecting point SC is scooped up by a bucket B of the hydraulic excavator PS, and is fed to the sediment feeding section 10 constituting the sediment supplying means 3 in the soil improvement machine. The earth and sand that have been put in and put into the earth and sand feeding section 10 are conveyed by the conveyer conveyor 11 and are supplied to the receiving section 26 of the mixing container 20 in the mixing means 6. In addition, the soil improving material is supplied to the receiving portion 26 from the feeder 13 in the soil improving material supplying means 4. The mixing container 20 is a mixture of these earth and sand and soil conditioner.
When it is fed into the inside, the mixer 21 moves to the position of the discharge part 27 while stirring and mixing the soil and the soil improving material. In the meantime, the soil and the soil improving material are uniformly mixed in the mixing container 20 to produce the improved soil in the aggregated state. This improved soil falls from the discharging section 27 and is conveyed to a desired position by the discharging conveyor 6,
Will be deposited.

The soil improvement treatment is carried out as described above. When the soil excavator PS is used to feed the soil into the sand depositing portion 10, the soil is, for example, rocks, rubble, concrete pieces, glass, metal, etc. Solid foreign matter may be mixed in. The mixing means 6 is the mixing container 2
The mixer 21 is mounted inside the mixer 0, and when such solid foreign matter enters the mixing container 20, there arises such a disadvantage that the smooth operation of the mixer 21 is hindered.
Further, when solid foreign matter or the like is mixed in the improved soil, since such solid foreign matter is an impurity, if the treatment is performed as it is, the quality of the produced improved soil is deteriorated. Sediment input section 1
No. 0 is provided with a sieve 32, and the sieve 32 is vibrated by a vibrating means 40 to separate solid foreign matters from the earth and sand and to take only the earth and sand into the earth and sand storage part 30.

The sieve 32 also has a function of reducing the bulk density by mixing a proper amount of air into the soil. When the bulk density is reduced in this way, it becomes possible to smoothly and reliably carry the earth and sand from the earth and sand storage frame 30 by the conveyor 11 and the stirring and mixing in the mixing means 5 with a light load. Further, by shaking the sieve 32, it is possible to disintegrate the soil mass by the impact that acts. That is, the sieve 32
It also has the function of subdividing the soil mass into small pieces.

By the way, there are various types of soil and sand that are processed by the soil improvement machine, and the soil and sand that have been put into them can pass through the sieve 32 easily and some cannot easily pass through them. . Also, when the earth and sand is in the state of clod, it is easy to collapse it,
Some have strong cohesion and do not easily collapse. By controlling the residence time of the sediment on the sieve 32 according to the nature of the sediment, solid foreign matter and the like are separated from the input sediment, and only the sediment is taken into the sediment storage unit 30 quickly and efficiently. To do so. This is why the angle of the sieve 32 is adjusted.

First, in the case of treating free-flowing sandy sand that can easily pass through the sieve 32, the hydraulic cylinder 47 is used.
Is extended to displace the tilting frame 35 supporting the earth and sand charging part 10 so as to stand up, and the angle of the sieve 32 is increased as shown in FIG. As a result, the sieve 32
The earth and sand put into the upper part is separated from solid foreign matters and the like, and quickly passes therethrough, and the solid foreign matters and the like are quickly discharged by rolling down along the inclination of the sieve 32.

Further, when highly viscous earth and sand is added, the inclination of the sieve 32 is reduced. Further, as shown in FIG. 5, the sieve 32 can be made substantially horizontal. As a result, the sieve 32 vibrates due to the vibration applied by the vibrating means 40, but the moving speed of the soil on the sieve 32 in the discharging direction becomes extremely slow. Therefore, the sieve of earth and sand 3
Since the residence time on 2 becomes long, the viscous soil adhering to the surface of the sieve 32 in the meantime is vibrated and vibrated.
It falls within 0. Although the sieve 32 has a shallow angle, if it is inclined as a whole in the discharging direction, the solid foreign matters remaining on the sieve 32 gradually move in the discharging direction and are discharged from the end of the sieve 32 to the outside. To be done. Here, sieve 3
When 2 is in a horizontal state, solid foreign matter cannot be discharged by its own weight, but the vibrating means 40 is composed of the rotating drums 42a and 42b whose center of gravity positions are eccentric. It is possible to transfer solid foreign matter and the like in the discharge direction.

Further, when the input earth and sand is in a lump state, it usually collapses due to the impact when it is put into the hopper portion 31 and is divided into small pieces by the action of the vibration of the sieve 32. It is subdivided into sizes that can pass through the sieve 32. However, when the soil and sand are bound in a compacted state, they may fall from the discharge portion along the inclination of the sieve 32 before being divided into small pieces by vibration. Therefore,
Also in such a case, the angle of the sieve 32 is made shallow so that the soil mass is held so as not to easily fall from the sieve 32, and during this period, the soil mass is certainly vibrated to promote the collapse of the soil mass. Further, in order to promote the collapse of the clod, if a larger vibration is applied, the clod of the clod is collapsed more quickly. For this purpose, the vibrating means 40 is actuated to operate the sieve 32.
And the hydraulic cylinder 47 is caused to make a minute stroke to vibrate the whole earth and sand charging part 10.

By the way, soil improvement treatment is carried out even on rough terrain or slopes. Therefore, the soil improvement process may be performed with the entire vehicle tilted. In this case, the outrigger 48 is operated to control the attitude so that the entire vehicle is in a substantially horizontal state. Since the outriggers 48 are provided on the left and right, if both outriggers 48 are extended by an appropriate amount, even if the vehicle leans to the left or right,
You can change your posture to be almost horizontal. In addition, even if the vehicle is tilted largely in the front-rear direction and the vehicle cannot be brought into a horizontal state only by the operation of the outrigger 48, the tilting frame 35 can tilt the earth and sand loading portion 10,
Moreover, as shown in FIG. 11, since the discharge direction can be tilted upward and the left and right outriggers 48 can be independently expanded and contracted, the operation of the outrigger 48 and the tilting frame by the hydraulic cylinder 47 can be performed. By combining the angle adjusting means with the angle adjusting means 35, the angle of the sieve 32 can be adjusted so as to optimize the sieving condition depending on the nature and condition of the earth and sand.

As described above, the hydraulic cylinder 47 and the outrigger 48 are appropriately operated depending on the nature and condition of the earth and sand and the condition of the ground on which the vehicle is located, so that the angle of the sieve 32 is different from that of the earth and sand. Since it is possible to set the optimum angle for improvement, in the case of free-flowing sandy soil, it is possible to more quickly and reliably separate and take in the sediment from solid foreign matter, etc. Even if it is, it is possible to reliably exert the function of sieving sediment from solid foreign matter, etc., and even when treating soil in a clod state, this clod can be reliably collapsed and taken in. Therefore, it is possible to prevent waste clods from being unnecessarily discharged from the discharging section.

By the way, in the above-described embodiment, the improved soil is formed by mixing the soil and the soil improving material. However, in a crushing type soil improving machine, for example, The configuration shown in FIG. 12 is used.

In the figure, 101 is a running body, 102 is a main body frame, 103 is earth and sand supplying means, 104 is a soil conditioner supplying means, 105 is a crusher, and 106 is a discharge conveyor. The earth and sand supply means 103 is the earth and sand input unit 11
0 and a transfer conveyor 111. Further, the crusher 105 is configured such that the rotary cutter 121 and the rotary impactors 122 provided at a plurality of positions at different positions in the front-rear direction and the vertical direction are mounted in the housing 120. Therefore,
When the earth and sand put into the earth and sand input section 110 of the earth and sand supply means 103 is conveyed along the conveyer conveyor 111, it is mixed with the soil conditioner supplied from the soil improver supplying means 104 and conveyed by the conveyer 111. It is cut and crushed by the rotary cutter 121 provided at the end position. Then, the mixture of the earth and sand and the soil conditioner is a conveyor 11.
While falling from the end of 1, by the rotation of the rotary impactor 122, the impact is applied by the impact claws provided on the outer peripheral surface thereof, the earth and sand are crushed, and mixed with the soil conditioner,
While being repeatedly hit by the rotary hitting element 122, it falls onto the carry-out conveyor 106. During this time, the earth and sand and the soil improvement material are mixed to produce improved soil.

Also in the crushing type soil improvement machine having the above-mentioned structure, the earth and sand are supplied to the earth and sand supply means 103 by the supplying means such as a hydraulic excavator, and solid foreign matter is contained in the earth and sand supplied by the supplying means. It is mixed. Therefore, although illustration is omitted, as in the first embodiment described above, a vibrating screen is installed in the earth and sand input part 110 to separate solid foreign matters and the like and to take in only earth and sand.

The earth and sand supply means 103 is the body frame 10
It is supported so that the angle can be adjusted with respect to 2. Therefore, the body frame 102 is provided with support members 133 having a substantially box shape on both left and right sides, and the earth and sand supply means 103 is provided with beam members 135. A hydraulic cylinder 147 is connected between the beam member 135 and the support member 133, and the earth and sand supply means 103 is also provided.
Is connected to the support member 133 by a pivot pin 136. Therefore, by driving the hydraulic cylinder 147, it is possible to adjust the angle of the earth and sand supply means 103, that is, the angle of the vibrating screen attached to the earth and sand supply means 103. An outrigger 148 is also attached to the body frame 102.

With the above-mentioned structure, the hydraulic cylinder 147 and the outriggers are arranged in accordance with the nature and condition of the earth and sand to be thrown in and the scaffolding of the vehicle, as in the first embodiment. By appropriately driving 148, the earth and sand supply means 103 can always be kept in a good operating state.

[0040]

INDUSTRIAL APPLICABILITY According to the present invention, a sediment loading section equipped with a sieve is stacked.
Connect one end side of the tilting frame to be mounted to the support member
Connecting the moving frame to the center with a hydraulic cylinder
Since the earth and sand input part can be tilted, by adjusting the tilt angle, various effects can be obtained such that it can be adjusted so as to have an optimum sieving condition according to the nature and state of the earth and sand.

[Brief description of drawings]

FIG. 1 is a front view of a self-propelled soil improvement machine according to a first embodiment of the present invention.

FIG. 2 is a plan view of FIG.

FIG. 3 is a vertical cross-sectional view of the mixing means mounted on the self-propelled soil improvement machine of FIG.

4 is a cross-sectional view taken along the line AA of FIG.

FIG. 5 is a front view of the earth and sand input part that constitutes the earth and sand supply means in the embodiment of the present invention.

FIG. 6 is a plan view of FIG.

FIG. 7 is a right side view of FIG.

FIG. 8 is an operation explanatory view of the angle adjusting means of the sieve used in the embodiment of the present invention.

FIG. 9 is an operation explanatory view showing a state in which soil improvement processing is being performed using the self-propelled soil improvement machine shown in the first embodiment.

FIG. 10 is an operation explanatory view showing an operating state of the sieve when the sandy soil is treated in the self-propelled soil improvement machine shown in the first embodiment.

FIG. 11 is an operation explanatory view showing the screen of the self-propelled soil improvement machine shown in the first embodiment with the discharging direction facing upward.

FIG. 12 is a front view of a self-propelled soil improvement machine showing a second embodiment of the present invention.

[Explanation of symbols]

1, 101 traveling body 1a crawler belt 2,102 main body frame 3,103 earth and sand supply means 4,104 soil conditioner supply means 5 mixing means 10,110 earth and sand input section 11,111 transport conveyor 30 earth and sand storage section 31 hopper section 32 sieve 33 , 133 support members 35, 135 tilting frame 40 vibrating means 47, 147 hydraulic cylinders 48, 148 outriggers

─────────────────────────────────────────────────── ─── Continuation of front page (56) References JP-A-9-195265 (JP, A) JP-A-5-138063 (JP, A) (58) Fields investigated (Int.Cl. ⁷ , DB name) E02F 7/00 B01F 7/04 B01F 7/08 B01F 15/02 E02D 3/12

Claims (2)

(57) [Claims] 1. A main body frame , a traveling means provided on the main body frame, a mixing means provided on the main body frame, and a supporting member provided on one longitudinal side of the main body frame.
In addition, a tilting frame whose one end is tiltably connected, and a tilting frame provided on this tilting frame via a spring
The earth and sand loading section provided with a sieve for separating solid foreign matter from the sieve and the tilting frame,
A vibrating means for vibrating the shaft , one end side of the supporting member, and the other end side of the tilting frame.
The tilting frame is connected to almost the center, and its expansion and contraction action
A hydraulic cylinder that adjusts the angle of the dome, and a soil cylinder that is installed below the sediment loading unit
Conveyance conveyor to convey to the mixing means, and soil quality to supply soil improvement material to the earth and sand on this conveyor
Self-propelled soil quality characterized by having an improved material supply means
Improved machine. 2. The self-propelled soil improvement machine according to claim 1, wherein a discharge portion for discharging foreign matter is provided at an end of the sieve.