JP3386437B2 - 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 soil improvement machine for improving the quality of soil to meet a predetermined purpose, for improving soft ground and strengthening the soil. And a self-propelled soil improvement machine capable of supplying the soil improvement agent to the mixing means without scattering the soil improvement agent to the outside.

[0002]

2. Description of the Related Art For example, when improving or strengthening the ground, a soil improvement machine is used to produce an improved soil in which soil improvement material such as a solidifying material is uniformly mixed with soil. This soil improvement machine mixes soil and soil improvement material
A mixer for mixing, and a structure including means for supplying earth and sand and a soil conditioner to the mixer,
For example, a mixing type soil improvement machine disclosed in Japanese Patent Laid-Open No. 2000-45263 and Japanese Patent Laid-Open No. 9-1
A crushing type soil improvement machine and the like shown in Japanese Patent No. 95265 are conventionally known. These soil improvement machines have crawler-type traveling means, have a small and compact structure, and are portable, so soil and sand generated by excavation, etc. are accumulated at a predetermined position to improve the soil quality. Machines can be transported to the sedimentation site for soil improvement on the spot.

Here, the mixing type soil improvement machine and the shredding type soil improvement machine have different mixing means, but the mixing materials supplied to this mixing means are earth and sand and the soil improvement material. , There is no particular difference in the structure of the supply means. That is, the mixed material supply device includes a sediment hopper, a soil improving material hopper, and a mixed material conveying conveyer that conveys the mixed material supplied from the earth and sand hopper and the soil improving material hopper to the mixing means. Specifically, a frame-shaped earth and sand hopper is provided on the conveyor belt that constitutes the mixed material conveyor, and the earth and sand is charged into the earth and sand hopper. The soil quality improving material hopper includes a soil quality improving material storage tank and a feeder that supplies the soil quality improving material to the mixed material transport conveyor in a fixed amount substantially continuously. However, the soil improvement material is generally supplied to the front side of the earth and sand supply position, that is, to the downstream side. Therefore, the soil improvement material is dropped by its own weight from a position separated from the conveyor belt by a predetermined distance. Is configured to supply.

The soil improvement machine having the above-mentioned structure is for burying gas pipes, water and sewage works, other road works, and foundation works. In the city or its suburbs. For example, taking the foundation work for constructing a building such as a large building as an example, the amount of excavated soil required for this foundation work to be converted to improved soil is extremely large, and the soil for excavated soil is improved. If the soil is improved by carrying it to the plant and the improved soil obtained as a result is carried into the foundation construction site, unless a dump truck for transporting the soil and the improved soil is frequently brought in and out. Instead, it will cause traffic obstacles.

A portable soil improvement machine can effectively cope with such a situation. In other words, in performing the foundation work,
For example, excavating the earth and sand with a hydraulic excavator, it is made to accumulate the earth and sand that needs soil improvement at a predetermined position on this site, and when a certain amount of earth and sand is accumulated, after transporting the soil improvement machine with a trailer etc., Soil can be improved by self-propelled to the place where sediment is deposited. As a result, traffic obstacles can be suppressed, and transportation costs for soil and improved soil can be reduced, which is extremely advantageous in terms of treatment costs.

[0006]

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention As already explained,
Sediment for soil improvement is generated in the city or its suburbs, and soil improvement is a field work. Therefore, when the soil improvement treatment is performed, it is necessary to take measures to prevent dust and dust from scattering in order to preserve the surrounding environment. Even if the soil is loaded into the sand hopper with a hydraulic excavator, etc., and the soil improvement material is supplied from a position away from the mixed material transport conveyor, the amount of transported soil on the mixed material transport conveyor is kept constant to some extent. Since there,
The feeder need not be too far from the mixed material transport conveyor. Further, the mixing means can suppress the scattering of dust or dust by providing the mixing means or the crushing means inside the housing such as the mixing container. Furthermore, in the case of the mixing method, the improved soil generated in the mixing container has a soil-improving material to be scattered that is adhered to the surface of the soil or taken into the soil. No dust is scattered.

However, depending on the weather conditions, if the soil improvement treatment is performed on a particularly windy day, there is a possibility that dust, dust, or the like will be blown and scattered during the period. Scattering of earth and sand is not a serious problem, and if the scattering is severe, it can be suppressed by sprinkling water. On the other hand, such measures cannot be taken for soil improvement materials. In particular, as the purpose of the soil improvement material, when it is for solidifying soil such as ground reinforcement, a solidifying material containing lime or cement as a main component is used. Therefore, if lime, cement, or the like becomes fine powder and scatters, the degree of pollution of the surrounding environment becomes serious. For this reason, in a residential area or the like, soil improvement treatment must be stopped depending on weather conditions such as a windy day.

The present invention has been made in view of the above points, and it is an object of the present invention to prevent fine powdery soil improving materials from being scattered around during the soil improving treatment. It is to ensure that it can be prevented.

[0009]

[0010]

[0011]

Means for Solving the Problems (1) In order to achieve the above object, the present invention provides a running body, a main body frame provided on the running body, and a main body frame provided with the running body to improve soil and soil quality. Mixing means for mixing the material, the earth and sand hopper provided on one side in the longitudinal direction of the main body frame, one side below the earth and sand hopper, the other side is a mixed material conveying conveyor arranged so as to face the mixing means, A storage tank for storing the soil improvement material and a storage tank provided below the storage tank,
A feeder that supplies the soil improvement agent to the earth and sand transported by the mixed material conveyor, and prevents the soil improvement agent from scattering.
Small definitive to the mixed material on the conveyor so as to stop
And a member forming a closed space between the feeder and the mixing means . ( 2 ) In ( 1 ) above, preferably, the member provided so as to prevent the soil-improving material from scattering is a portion of the mixed material transport conveyor from the outlet of the earth and sand hopper to the mixing means. And a member for guiding the soil improvement material from the feeder to the member for covering the portion from the outlet of the earth and sand hopper to the mixing means.

[0012]

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. First, FIGS. 1 and 2 show the entire structure of a self-propelled soil improvement machine, and FIG. 3 shows an exploded structure of the soil improvement mechanism.

In the figure, 1 is a lower traveling body,
The undercarriage 1 is provided with, for example, crawler type means having left and right crawler belts 1a. A main body frame 2 that constitutes a chassis is installed on the lower traveling body 1, and a mixed material supply unit 3 that supplies a mixed material composed of earth and sand and a soil improvement agent to the main body frame 2 is stirred and mixed. It is equipped with a mixing means 4, an improved soil discharging part 5, and the like. The arrangement position of the mixed material supply unit 3 is forward as viewed from the flow of processing,
It will be on the upstream side. The conveying direction of the mixed material in the mixed material supply unit 3 is obliquely upward. Further, since the improved soil generated by the mixing means 4 is discharged downward, the improved soil discharging section 5 receives the improved soil at the lower position of the mixing means 4 and conveys it obliquely upward. Further, a drive device 6 incorporating a drive machine such as an engine, a hydraulic pump, a directional control valve unit, etc. is installed at an upper position of the mixing means 4.

The mixed material supplying section 3 has a mixed material conveying conveyor 10, to which earth and sand are supplied from the earth and sand hopper 20 and then to the soil improving material from the soil improving material hopper 30. The mixed material transfer conveyor 10 has a transfer belt 11, which is wound around a drive wheel 13 and a driven wheel 14 supported by a frame 12 and has a well-known tension on the driven wheel 14 side. Equipped with an adjustment mechanism. In order to support the transport surface of the transport belt 11, guide rollers 15 are provided below the transport surface at a predetermined pitch.
Further, regulation plates 16 and 16 are provided at positions on the left and right sides of the conveyance surface of the conveyance belt 11 on the downstream side of the mounting portion of the earth and sand hopper 20, and the regulation plates 16 are conveyed by the conveyance belt 11. It determines the height, which controls the amount of sediment transport. In other words, the sediment carried on the conveyor belt 11 is held so as not to be spilled to the left and right.

A vibrating screen 21 is installed above the earth and sand hopper 20. The vibrating screen 21 is tilted, and independently of the earth and sand hopper 20, a vibrating support member 22 such as a spring is used for the main body. It is supported by a support member 17 provided on the frame 2. Here, the vibrating screen 21 is configured by providing a lattice, a wire mesh or the like on the upper surface of a frame-shaped member fitted into the earth and sand hopper 20. The vibrating screen 21 is equipped with a vibrating means 23. Therefore, the vibrating screen 2
When earth and sand are thrown into 1 and this vibrating screen 21 vibrates up and down by the vibrating means 23, solid foreign matters such as concrete, rocks and metals are separated from the thrown earth and sand, and only the earth and sand enter the earth and sand hopper 20. It is captured. The solid foreign matter separated by the vibrating screen 21 and remaining on the vibrating screen 21 moves downward along the inclination of the vibrating screen 21 and falls on the ground. As a result, solid foreign matter is removed from the input earth and sand and is taken into the earth and sand hopper 20 having a predetermined volume. It should be noted that the sieve installed in the earth and sand hopper 20 may be a fixed sieve, or may not be installed if solid foreign matter is removed in advance.

The soil quality improving material hopper 30 includes a storage tank 31 for storing a predetermined amount of the soil quality improving material, and a feeder 32 for supplying the soil quality improving material from the storage tank 31 onto the conveyor belt 11 of the mixed material conveyor 10. Is equipped with.
Here, the soil improvement material is mixed with the earth and sand in order to improve or improve the soil quality, and the soil improvement material is used according to the purpose of each soil improvement and reformation. For example, when the soil is used for soil improvement or backfilling, lime, cement, or a mixture of these with various additives for promoting solidification is used.

The storage tank 31 is a substantially cylindrical container, and in the illustrated one, the bellows portion 31a is provided on the upper side.
Is provided, and the height dimension is made variable by expanding and contracting the bellows portion 31a. In addition, a lid 33 is provided above the storage tank 31 so that the soil improving material can be supplied. The lid 33 is opened to supply the soil improving material from the flexible container. It is like this. Then, when the lid 33 is closed after the soil improvement material is supplied, the storage tank 31 is substantially closed. The configuration of the storage tank is not limited to the one provided with the above-mentioned bellows portion, and may be any one as long as it has a lid and can be almost sealed in a state where a predetermined amount of the soil improvement material is stored therein. .

On the other hand, the feeder 32 is for supplying the soil improvement material in the storage tank 31 with a regulated supply amount. For this purpose, as shown in FIG.
Is connected to the lower surface of the storage tank 31, and the casing 34 of the feeder 32 is connected at its upper side to a soil improvement material supply port 35 formed in the lower surface 31b of the storage tank 31. An inflow part 34a for inflowing the soil improvement material from the supply port 35 is provided, and an outflow part 34b opened at an upper part of the conveyor belt 11 in the mixed material conveyor 10 is provided at a lower part thereof. A roughly arc-shaped supply amount control unit 34c is provided between the inflow portion 34a and the outflow portion 34b, and the rotor 3 rotationally driven by a motor (not shown) is provided in the supply amount control unit 34c.
6 is attached, and by the rotation of the rotor 36,
The soil improvement material taken in from the inflow part 34a
b, and the rotor 36
The amount of soil improvement agent supplied can be changed according to the number of revolutions. In the figure, 37 is the storage tank 3.
It is a stirring rod for stirring the inside of 1.

The end of the mixed material conveying conveyor 10 is connected to a mixing container 40 which constitutes the mixing means 4. The mixing container 40 is a rectangular container arranged in the longitudinal direction of the main body frame 2, that is, in a substantially horizontal direction. As shown in FIGS. 5 and 6, the mixing container 40 has an introduction part at the upper part on the front side. The constituent inlet 41 is formed, and the lower portion on the rear side is connected to the outlet 42 constituting the discharge portion, and the other parts are substantially sealed. In the mixing container 40, two paddle mixers 43 are provided in parallel as a means for stirring and mixing the earth and sand and the soil conditioner. The paddle mixer 43 has a rotating shaft 44.
A large number of paddles 45 are planted on the rotary shaft 44 at a predetermined angle (for example, every 90 °). By rotating the rotary shaft 44, the paddles 45 are provided.
Is rotatively driven to agitate the inside of the mixing container 40, and the soil and the sand and the soil conditioner introduced into the mixing container 40 are agitated and evenly mixed, and transferred toward the discharge port 42 side. The number of paddle mixers provided in the mixing container 40 is appropriately set depending on the relationship between the width dimension and the height dimension of the mixing container 40. However, it is desirable to provide an even number of paddle mixers.

In the mixing container 40 having the above construction, the soil and the soil improving agent introduced from the inlet 41 are uniformly stirred and mixed by the action of the paddle mixer 43, and
Improved soil is produced as it is transported towards the outlet 42. The improved soil produced in this manner is discharged from the discharge port 42 to the improved soil discharging section 5 by its own weight. Here, the improved soil discharging unit 5 includes a carry-out conveyor 50 that conveys the improved soil generated by the mixing means 4. This carry-out conveyor 50
Extends obliquely upward from the lower part of the mixing container 40, and the improved soil is deposited at a predetermined position at a predetermined position.

Next, FIG. 7 shows an example of a state in which soil improvement processing is being performed using the soil improvement machine. The figure shows that the soil improvement machine is arranged in a small yard and the soil accumulated in this yard is improved in advance. To improve the soil, a means for feeding the soil into the sediment hopper 20 is used. Is required. A hydraulic shovel PS, for example, is preferably used as the means for charging the earth and sand.

In order to improve the soil quality in the yard,
The sediment accumulated with a predetermined spread is scooped up sequentially from the end by a bucket B of the hydraulic excavator PS, and is thrown into the sediment hopper 20 of the soil improvement machine. While the earth and sand is conveyed from the earth and sand hopper 20 by the mixed material conveying conveyor 10, the earth improving material is supplied from the earth improving material hopper 30 and is supplied onto the surface of the earth and sand. Then, a mixture of the earth and sand and the soil conditioner is fed into the mixing container 40 from the end of the mixed material conveyer conveyor 10 through the inlet 41, and the paddle mixer 43 provided in the mixing container 40 acts so that the earth and sand and the soil conditioner are improved. While the and are being stirred and mixed, the discharge port 42
Move to the position. Then, the soil and the soil-improving material are uniformly mixed in the mixing container 40 to produce the improved soil in which the soil quality is improved or modified. The improved soil is deposited at a predetermined position from the discharge port 42 through the discharge conveyor 50.

As described above, the produced improved soil is conveyed to the carry-out conveyor 50 constituting the improved soil discharging means and accumulated at a predetermined position. At the carrying end position of the carry-out conveyor 50, the improved soil selecting device 60 is provided. It is provided. This sorting device 6
0 is configured as a portable type, and includes a sieve 61 and a transfer conveyor 62. It is desirable that the sieve 61 has a mesh size such as 13 mm or less, 20 mm or less, 25 mm or less, which allows passage of particles having a predetermined particle diameter or less, and is constituted by a vibrating sieve. Then, the improved soil having a uniform particle size is passed through the sieve 61 and the transfer conveyor 6
In step 2, it is deposited at a predetermined deposition location. Further, since the improved soil having a large particle size that has not passed through the sieve 61 has the same quality in that it has been solidified, the improved soil having a large particle size may be treated as it is or with a uniform particle size. After carrying out, it will be used as a mixed material for backfilling.

By the way, the soil improvement treatment is a treatment of particles or powders of soil and soil improvement agent, and since the treatment is performed outdoors, there is a possibility that these soils and soil improvement agents are scattered to the outside. There is. Therefore, in order to prevent pollution of the surrounding environment, it has to be prevented or suppressed from scattering to the outside.

The earth and sand are put on the vibrating screen 21, vibrated by the vibrating screen 21, and flow into the earth and sand hopper 20. Then, it is transported by the mixed material transport conveyor 10 and supplied into the mixing container 40. While earth and sand are transported along the mixed material transport conveyor 10, the storage tank 31 in the soil quality improving material hopper 30 to the feeder 32.
A soil improvement material is added through the. The mixed material composed of the earth and sand and the soil improving agent supplied from the mixed material conveying conveyor 10 into the mixing container 40 is mixed with the improved soil while being stirred and mixed by the paddle mixer 43 provided in the mixing container 40. Become. The improved soil moves from the mixing container 40 to the discharge conveyor 50 and is deposited at a predetermined position through the sorting device 60.

Here, the earth and sand hopper 20 is a frame-shaped member, and the mixing container 40 is substantially sealed except for the inlet 41 and the outlet 42. Further, the improved soil has the soil improvement material attached to the surface of the soil or taken in the soil, so that the possibility of scattering is extremely low. From the above, it is most likely that the earth and sand on the vibrating screen 21 and the soil-improving material supplied from the feeder 32 to the mixed material conveying conveyor 10 are scattered as particles or powder. Since vibration is applied to the earth and sand on the vibrating screen 21, when the earth and sand have a small particle size and a low water content, there is a possibility that the earth and sand will be scattered around when vibrated. In order to prevent the fine-grained earth and sand from scattering, it is possible to prevent or suppress the scattering, for example, by mixing with the earth-and-sand having a high water content or by watering.

Among the above, when the soil improving agent is supplied from the feeder 32 to the earth and sand conveyed to the conveyor belt 11 of the mixed material conveying conveyor 10, the fine powdery soil improving agent is scattered. Further, since the soil improving material is added on the earth and sand on the conveyor belt 11, the soil improving material is exposed on the mixed material conveying conveyor 10. Furthermore, from the end of the mixed material transport conveyor 10 to the mixing container 4
The transition of the mixed material to 0 is guided by the introduction portion 41 of the mixing container 40 so as to drop due to its own weight. Therefore, in the conveying route of the mixed material from the sediment hopper 20 to the introduction portion 41 of the mixing container 40, there is a possibility that the soil improving agent becomes fine powder and scatters to the outside. Various materials are used as the soil improvement material, and for example, solidification materials such as lime and cement are used to solidify the earth and sand. If such a solidifying material becomes fine powder and scatters, the surrounding environment is greatly polluted, and if the wind is strong, not only will the scattering amount increase, but it will also scatter over a wide range. Is polluted. Therefore, in the present invention, by taking measures to prevent scattering of the soil improvement material, environmental pollution is prevented, and even in the vicinity of the residential area, etc., the soil improvement processing can be performed without disturbing the surroundings. .

Therefore, as shown in FIG. 8 and FIG.
A tunnel member 100 is provided between the earth and sand hopper 20 and the introduction portion 41 of the mixing container 40, and the tunnel member 100 allows the mixing material conveying conveyor 10 to almost completely complete the conveying route of the mixed material. It is configured to be sealed in. Here, the tunnel member 10
Reference numeral 0 is composed of left and right side covers 101, 101 and a ceiling cover 102 provided so as to bridge between the both side covers 101, 101. This tunnel member 10
0 indicates that the side cover 101 is the mixed material transport conveyor 1
It is connected to the restriction plate 16 at 0 by means such as screwing. Further, a flange portion 100a is formed at one end of the tunnel member 100, the flange portion 100a is in contact with the end wall 20a of the earth and sand hopper 20, and the other end of the tunnel member 100 is at the mixed material transport conveyor 10. Is turned downward at the reversal portion of the shaft, and a flange portion 100b is formed at its end portion.
Is in contact with the periphery of the inlet 41 of the mixing container 40 projecting in a cylindrical shape. Here, the flange portions 100a, 100
b can be fixed to the earth and sand hopper 20 and the inlet 41 by screws or the like,
By increasing the connection strength between the side cover 101 and the regulation plate 16, the flange portions 100a and 100b can be held in a non-fixed state.

Further, as apparent from FIG. 4, in the ceiling cover 102 of the tunnel member 100, the feeder 3
An introduction opening 102a is formed at a lower position of 2. A connecting cylinder 103 is fixed to the end surface of the outflow portion 34b of the casing 34 of the feeder 32 by means such as screwing, and the connecting cylinder 103 is inserted through the introduction opening 102a. Be guided inside. Moreover, this connecting cylinder 103 is
1 is opened at a height higher than the earth-sand conveyance height position, so that the connecting cylinder 103 is conveyed by the conveyor belt 1.
It is held in a non-contact state with the earth and sand above.

With the above-described structure, the tunnel member 100 has a function of sealing the conveying path of the mixed material from the position of the end wall 20a of the earth and sand hopper 20 to the inlet 41 of the mixing container 40. In addition, the soil improving material is supplied from the feeder 32 through the connecting cylinder 103 into the sealed space of the tunnel member 100. Therefore, there is no possibility that this soil improvement material will be scattered outside, and the pollution of the surrounding environment can be suppressed. In addition, since the inlet 41 of the mixing container 40 is also open in the closed space, even if the sand and soil improving material are flipped up by the operation of the paddle mixer 43 provided in the mixing container 40, the mixture 41 overflows to the outside. There is also nothing to do.

The whole machine vibrates during the soil improvement treatment, and the vibration direction, size, frequency, etc. are different in each part. The tunnel member 100 is connected to the earth and sand hopper 20, the mixed material transfer conveyor 10 and the mixing container 40, and further, the connecting cylinder 1
03 is connected between the soil improvement material hopper 30 and the tunnel member 100. Therefore, although the tunnel member 100 and the connecting cylinder body 103 can be formed of a hard member such as metal or hard plastic, they may be deformed or damaged due to the vibration of each part. In order to prevent this, it is desirable that at least the connecting cylinder 103 is made of an elastic member such as rubber. If the entire cover member 100 is also made of an elastic member such as rubber, it is possible to reliably prevent deformation and damage. However, when the tunnel member 100 is entirely made of an elastic member, the tunnel member 100 is turned obliquely from the upper side to the lower side at the transition part from the end part of the mixed material transfer conveyor 10 to the introduction part 41 of the mixing container 40. Therefore, this part may not have sufficient shape retention. In such a case, the connecting cylinder 103 may be formed of an elastic member such as rubber and the tunnel member 100 may be formed of a hard member.

From the above, as shown in FIG. 9, the mixing container 40 is provided with the direction changing portion cover 200 in which the hard member made of metal or the like is formed in an arc shape in the introduction part 41 of the mixing container 40.
The tunnel member 201 may be configured to be provided so as to project from the 0 introduction portion 41 and the direction changing portion cover 200 may be connected. Here, the tunnel member 20
1 is a left and right side cover 202 connected to the regulation plate 16.
And a ceiling cover 203 provided so as to bridge the both side surface covers 202, the side surface cover 202 and the ceiling cover 203 are substantially linear. Therefore, even if these are formed of an elastic member such as rubber, the shape retention is improved by mounting them with a certain degree of tension. Therefore,
Even if the earth and sand hopper 20 and the mixed material transfer conveyor 10 and the mixing container 40 vibrate in different degrees and directions, the elastic member can effectively absorb the vibration, and the tunnel member 2
01 is prevented and noise is reduced. Further, the connecting cylinder 204 connected to the feeder 32 penetrates through the introduction opening 203a formed in the ceiling cover 203 of the tunnel member 201 and is guided to the upper part of the mixed material transfer conveyor 10. Similarly, the body 204 is preferably made of an elastic member such as rubber.

By the way, regardless of which type of tunnel member described above is used, it is not possible to completely cover the winding portion of the conveyor belt 11 around the drive wheel 13 in the mixed material conveyor 10. Therefore, even if the tunnel member is provided, the fine-powder soil-improving material may leak out of the tunnel member. Therefore, as shown in FIG. 9, in the direction change section cover 200 (in the case of using the tunnel member 100 shown in FIG. 8, this tunnel member 100), a negative pressure source connected to a negative pressure source (not shown) is connected. The negative pressure suction hose 205 is provided by connecting the negative pressure suction hose 205.
The suction force is applied to the mixed material conveying path by the mixed material conveying conveyor 10. As a result, the fine powdery soil improving material and the like floating inside the direction changing portion cover 200 and the tunnel member 201 are collected by the suction force of the negative pressure suction hose 205.

[0035]

EFFECTS OF THE INVENTION Since the present invention is constituted as described above, there is an effect that it is possible to surely prevent fine powdery soil improving material and the like from scattering around while performing soil improving treatment.

[Brief description of drawings]

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

FIG. 2 is a plan view of FIG.

FIG. 3 is an exploded view of a soil improvement mechanism in the soil improvement machine of FIG.

FIG. 4 is a cross-sectional view of a soil-improving-material supply unit from the feeder of the soil-improving-material hopper to the mixed-material conveying conveyor according to the embodiment of the present invention.

FIG. 5 is a plan view of a mixing means showing an embodiment of the present invention.

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

FIG. 7 is an operation explanatory diagram showing a state where soil improvement processing is being performed using the soil improvement machine according to the embodiment of the present invention.

FIG. 8 is a front view showing a constituent part of a mixed material transport path provided with a tunnel member according to an embodiment of the present invention.

FIG. 9 is a front view showing a constituent portion of a mixed material transport path provided with a tunnel member according to another embodiment of the present invention.

[Explanation of symbols]

1 Lower Traveling Body 2 Body Frame 3 Mixed Material Supply Section 4 Mixing Means 5 Improved Soil Discharge Section 10 Mixed Material Conveyor 11 Conveyor Belt 16 Control Plate 20 Sediment Hopper 30 Soil Conditioning Material Hopper 31 Storage Tank 32 Feeder 40 Mixing Container 41 Inlet Port 42 Discharge port 100,201 Tunnel member 101,202 Side cover 102,203
Ceiling covers 103, 204 Connection cylinder 200 Direction changeover cover 205 Negative pressure suction hose

─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yoshihiro Hoshino 650 Jinrachi-cho, Tsuchiura-shi, Ibaraki Hitachi Construction Machinery Co., Ltd. Tsuchiura factory (72) Inventor Hisahi Hashimoto 650 Kintate-cho, Tsuchiura-shi, Ibaraki Hitachi Construction Machinery Co., Ltd. Company Tsuchiura Plant (72) Inventor Tetsushiro Miura 2-6-2 Otemachi, Chiyoda-ku, Tokyo Inside Hitachi Construction Machinery Co., Ltd. (56) Reference JP 10-317425 (JP, A) (58) Survey Areas (Int.Cl. ⁷ , DB name) E02F 7/00

Claims (2)

(57) [Claims] 1. A traveling body, a main body frame provided on the traveling body, a mixing means provided on the main body frame for mixing earth and sand and a soil improvement agent, and provided on one side in the longitudinal direction of the main body frame. A sediment hopper, one side below the sediment hopper, the other side is a mixed material conveying conveyor arranged so as to face the mixing means, a storage tank for storing the soil conditioner, and a storage tank provided below the storage tank, the mixing and the feeder for supplying soil improvement agent to soil carried by the mixed material conveyor, from at least the feeder definitive to the mixed material on the conveyor so as to prevent the scattering of the soil improvement agent
A self-propelled soil improvement machine, comprising: a member forming a closed space between the means . 2. A member provided to prevent scattering of the soil quality improving material, a member for covering a portion of the mixed material conveying conveyor from an outlet of the earth and sand hopper to the mixing means, and the feeder. 7. A member for guiding the soil improvement material from (1) to a member that covers a portion from the outlet of the earth and sand hopper to the mixing means.
The self-propelled soil improvement machine described in 1 .