JP3452312B2 - Soil mixing improver - Google Patents

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a soil mixing and improving machine for improving soil. More specifically, mainly, construction, selection of soft soil generated as civil engineering soil, crushing, and continuous mixing with a solidifying agent, and soil improvement for reusing this soil. Regarding the machine.

[0002]

2. Description of the Related Art Conventionally, it has been desired to recycle and recycle as much as possible the residual soil generated by civil engineering and construction work. The soil of the original agricultural land and marshes is soft,
If the excavated soil is reused for land reclamation, the ground will become weak, which is a problem. However, it is a real problem that structures such as houses must be built on such land due to the limited restrictions on the use of land.

Ground improvement is applied to such land, and a solidifying agent such as quick lime and cement is mixed to harden the soil. Recently, it has been proposed that these works are performed by a series of automatic works, and that the work is carried out in a stationary plant or a self-propelled traveling machine is equipped with an improved machine. The self-propelled improved machine has a set of devices installed on the traveling body, so stable arrangement is required for traveling safety, and the center of gravity must be the center of the traveling body. It

Further, since the traveling body installed on the ground has a limited length to support each device as a set, the imbalance of the soil and the like during the operation of the improved machine and the contact of the shovel for supplying the soil. There is a risk of unbalance due to such reasons, or running or running on slopes,
Further, depending on road conditions, there may be obstacles such as height restrictions, or it may not be possible to pass on slopes, and it may be necessary to consider whether or not the vehicle can run on a general road.

For the type that does not self-propelled, the entire improved machine is mounted on a transportation vehicle for transportation. However, the crane must be used to mount the improved machine on the bed of the transportation vehicle, and the transportation height is high. However, the current situation is that part of the device is disassembled due to the fact that road height restrictions must be taken into consideration.

[0006]

The present invention has been made based on such a technical background, and achieves the following objects. An object of the present invention is to provide a soil mixing and improving machine that ensures traveling safety and safety during operation. Another object of the present invention is to provide a soil mixing improving machine which can be run with a low center of gravity. Still another object of the present invention is to provide a soil mixing and improving machine which enables self-propelled operation during operation. Still another object of the present invention is to provide a soil mixing and improving machine having a structure capable of reliable and safe transportation.

[0007]

Means for Solving the Problems Soil mixing improving machine of the present invention
Is an improvement that supplies a solidifying agent to the soil and mixes it to improve the soil quality.
A machine, a part of which is bent, and the lower part of this body
And a traveling device for self-propelled the improved machine,
A towing device provided at one end of the vehicle body and connectable to the towing vehicle,
A trailer wheel provided on a bent portion of the vehicle body,
The crusher installed in the center of the body and this crusher
A mixing and stirring device provided adjacent to the vehicle body,
It is mounted on the car body adjacent to the mixing and stirring device to supply the improver.
The improver device to be supplied, and
Soil supply device installed on the pulling device side to supply soil,
Installed at a position facing the mixing and stirring device with the disintegration device as a boundary.
Drive for driving the device mounted on the car body
Device and said crushing device provided adjacent to this drive device
A discharging device for discharging the improved soil crushed by
It consists of a table. Further, the soil supply device is equipped with a vibration device.
It is characterized by the fact that it is effective for soil selection.
is there.

[0008]

Further, a position changing device capable of changing the positions of the soil supplying device, the improving agent device and the mixing and stirring device is provided on the traction device, which is effective in lowering the center of gravity. Target. Furthermore, the soil supply device and the improver device is characterized in that a conveyor for carrying the soil and the improver to the mixing and stirring device and the disintegration device is provided below the improver device, and the improver of the soil is being transferred to the soil during transfer. It is effective to supply according to the flow rate. Further, the improving device is characterized in that it has a removable structure, which is effective for transporting on the road. Further, the discharging device is provided with a mixing cutter for mixing the improved soil conveyed by the crushing device, which is effective for further mixing the improved soil.

Further, the soil supply device is characterized by comprising a hopper having a cushioning member provided at the edge of the soil insertion opening, and damages the soil supply device even if an external device for supplying soil collides. It is effective because there is no risk of causing it. Further, a part of the discharging device is made bendable so as to be housed in the vehicle body, which is effective for transporting on a road. Further, a lifting device for lifting the vehicle body by swinging the trailer wheels around the fulcrum to separate the traveling device from the ground is provided on the vehicle body, and is effective when towing by a truck tractor during transportation. Target.

Further, the towing device is mounted on the vehicle body.
It is characterized in that it is arranged on the ground side with a step from the
And is effective in lowering the center of gravity. further,
The position changing device is on the towing device and is located on the soil supply.
Feeding device, the improver device, the mixing and stirring device and the conveyor
The rocker base on which the
It is a device that changes its position in
It is effective in lowering the center of gravity during transportation.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION (Embodiment 1) Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a side view showing the entire structure of a soil mixing and improving machine according to the present invention, which is a towed type without a self-propelled device. Each device of the soil mixing and improving machine 1 is mounted on the vehicle body 2. The vehicle body 2 is provided with a support device 3 for supporting the vehicle body 2 on the ground during operation. That is, when the hydraulically driven trailer jacks 4 are installed at two positions in the front and rear of the vehicle body 2 and are normally transported, the trailer jacks 4 are retracted to the vehicle body 2 side. Support two.

The support device 3 is for stabilizing the vehicle body 2 so that the soil mixing and improving machine 1 can be safely operated when it operates. In the present embodiment, the supporting device 3 is hydraulically driven, and two supporting devices 3 are provided in front of and behind the vehicle body 2, but may be fixed.

The trailer wheel 5 is provided below the end of the vehicle body 2.
2 pairs are provided. Further, a traction device 6 is provided at an end of the vehicle body 2 on the side opposite to the position of the trailer wheel 5, and the traction device 6 is composed of a traction member 7 and a connecting device 8 and is provided below the traction member 7. A connecting device 8 is provided so as to be connected to the truck tractor 9 (towing vehicle). Therefore, the towed type soil mixing improver 1 is supported by the wheels of the truck tractor 9 and the trailer wheels 5 when moving.

A drive device 10 for driving a device installed on the vehicle body 2 is provided above the vehicle body 2. This drive device 10 has two, and the first drive device is
The hydraulic unit 11 includes an operation panel. The hydraulic unit 11 is used for rocking drive of a rocker base 18 described later. Further, a power generation unit 12 of a second drive device that is rotationally driven by a diesel engine is mounted adjacent to the hydraulic unit 11 on the vehicle body 2. The power generation unit 12 is for generating electric power for driving the crusher 13 described later and the like.

At the center of the vehicle body 2, a crusher 13 (crushing device) is fixedly arranged on the vehicle body 2. Power generation unit 12
A discharging device 14 for discharging the crushed improved soil from the lower part of the crusher 13 to the outside of the vehicle body is provided at the lower position of the crusher 13. The discharging device 14 is mixed with the discharge conveyor 15 formed of an endless belt. It is composed of a cutter 16. The mixing cutter 16 is arranged in the previous step of discharging the improved soil by the discharging conveyor 15. The mixing cutter 16 is for finally crushing the improved soil discharged from the crusher 13.

Although not shown in detail, the mixing cutter 16 is equipped with a plurality of stirring blades and is rotationally driven by an electric motor. Further, since the discharge conveyor 15 discharges the improved soil to the outside of the machine, a part of the conveyor projects to the outside of the machine. Since it is an obstacle during transportation, a part of this conveyor can be bent and stored inside the vehicle body 2. That is, a part of the conveyor can be folded by rocking the discharge conveyor rocking shaft 15a as a fulcrum. The position indicated by the chain line in the figure shows the position stored in the vehicle body 2.

In the lower part of the vehicle body 2 near the discharge conveyor 15,
The trailer wheels 5 are provided as described above, and the vehicle body 2
Support a part of the when transporting. This trailer wheel 5 has 2
Although it is composed of a pair of wheels, it is not limited to two pairs. On the other hand, the above-described traction device 6 is provided at the end of the vehicle body 2 opposite to the discharging device 14. Two pairs of support members 17 are erected on the pulling member 7 of the pulling device 6 via pins, and the rocker base 18 is supported on the tip of the support members 17 via pins.

Therefore, the rocker base 18 is movably supported on the pulling member 7 by the two pairs of support members 17. The rocking table 18 is lowered while being transported by the link motion of the two pairs of the supporting members 17 on the vehicle body 2 side. On the rocker base 18, the soil supply device 1
9 is provided, and this soil supply device 19 is provided with a hopper 20.
And a vibrating grid (vibration device) 21, and the soil placed in the hopper 20 is received by the vibrating grid 21 located below.

The vibrating grid 21 is a vibrating screen for selecting the soil introduced from the upper hopper 20. The sieving surface of the box-shaped grid support base is inclined, and a vibration operation is applied to this grid support base to select soil. Although not shown, the soil thus sifted is dropped onto the belt conveyor 25 by a shooter provided below the grid support base.

The hopper 20, which is made of iron and has a box shape for storing soil, receives the soil input from the outside by a shovel or the like. If the shovel collides with the hopper 20 at this time of throwing in, the hopper 20 and the improved machine as a whole may be greatly impacted.

In order to mitigate this collision damage, rubber 20a is attached as a cushioning member to the periphery of the hopper input port. The cushioning member may be a spring or the like other than the rubber 20a. By providing this buffer member, the impact can be softened and damage to the hopper 20 and the like can be prevented.

A improver device 22 is mounted between the vibrating grid 21 and the disintegrator 13, and the improver device 22 is installed adjacent to the rocking machine base 18 like the soil supplying device 19. . The improving agent of the improving agent device 22 is a solidifying agent, and has a solidifying agent tank 23 at the upper part and stores the solidifying agent. At the bottom of this solidifying agent tank 23,
A solidifying agent supplying device 24 for supplying a solidifying agent to the soil conveyed from the soil supplying device 19 is provided.

From the solidifying agent supplying device 24, the solidifying agent is supplied according to the flow rate of the soil to be conveyed. Belt conveyor 25 (conveyor) for transporting this soil and solidifying agent
Is provided on the oscillating machine base 18 below the vibrating grid 21 and the solidifying agent supply device 24. Since the structures and functions of the vibrating grid 21 and the solidifying agent supplying device 24 are known and do not directly relate to the present invention, detailed description thereof will be omitted.

The solidifying agent tank 23 is detachable, and the solidifying agent is usually supplied by attaching the solidifying agent tank 23 containing the solidifying agent in advance. You may supply directly from the upper part.
The supplied soil and the solidifying agent are agitated by the mixing and agitating device 26 provided on the rocker table 18. Although not shown, the mixing and stirring device 26 uniformly stirs and mixes the soil and the solidifying agent by rotating the stirring blade with a device having a stirring blade. The improved soil stirred and solidified is crusher 1
It is sent to No. 3 and crushed.

The crusher 13 is provided on the vehicle body 2 for promoting the mixing of air and breaking up the mixed soil finely. The crusher 13 has a casing, and two rotary cutters and a repulsion plate are provided inside the casing. The rotary cutter has a cutting blade on the outer periphery, and is rotatably driven to stir by the mixing and stirring device 26 to be solidified and crush the mixed soil conveyed. The crushed mixed soil is transferred to the discharge conveyor 15 and the soil mixing and improving machine 1
It is discharged outside as improved soil. The soft soil is solidified and crushed in this way and reused as improved soil. When the improvement work is completed, each device is lowered to the ground side to lower the center of gravity for safety.

As described above, the soil supplying device 19, the improving device 22, the mixing and stirring device 26 and the belt conveyor 25.
Is lowered with the downward movement of the rocker base 18 to lower the center of gravity. Also, the modifier device 22 is
Can be removed and installed elsewhere. The movement drive of the rocker base 18 is performed by a hydraulic cylinder 27 provided between the pulling member 7 and the rocker base 18. That is, the hydraulic cylinder 27 swingably provided on the pulling member 7 expands and contracts the hydraulic cylinder rod 27a connected to the rocker base 18 to rock the support member 17, thereby changing the position of the rocker base 18.

The soil mixing and improving machine 1 of the present invention has such a structure and is arranged as follows. That is, from the soil supplying device side, the soil supplying device 19, the improving agent device 2
2, a belt conveyor 25 that receives and conveys soil and a solidifying agent,
The mixing and stirring device 26, the crusher 13, the hydraulic unit 11, the power generation unit 12, the mixing cutter 16, and the discharge conveyor for discharging the improved soil are arranged in this order. A heavy crusher 13, a hydraulic unit 11, etc. are arranged in the central portion.

Further, as described above, the solidifying agent tank 23, the solidifying agent supply device 24, the handrail of the stairs, and the like can be removed during transportation. The removed device is stored in an empty space on the vehicle body 2. For example, on an improved machine, on the mixing cutter 16 or the discharge conveyor 1
5 horizontal etc. On the soil mixing and improving machine 1, the mixed soil is mixed and stirred by a mixing agitator 26, a crusher 13, and a mixing cutter 16.
It is stirred at 3 points.

Therefore, even a small amount of the solidifying agent supplied during the transportation time reacts with the soil. This reaction has an improving effect, and the mixed soil of the soil and the solidifying agent which has already reacted in the subsequent kneading and thawing process has a reduced viscosity and water content, is easily crushed, and improves crushing efficiency. That is, since the solidifying agent and the soil are stirred at three points with a time difference, the efficiency of the kneading / melting of the solidifying agent and the soil is improved. In this way, the mixed soil is solidified and crushed to be improved soil, which is discharged and reused.

(Embodiment 2) Next, a soil mixing improvement machine 31 provided with a self-propelled device will be described with reference to FIGS. 2 to 4. 2 is a side view showing a moving state, FIG. 3 is a side view showing an operating state, and FIG. 4 is a plan view. In the figure, the device installed on the upper part of the vehicle body 32 is exactly the same as that of the first embodiment, and therefore the same reference numerals are given to the figure and the description thereof is omitted.

However, the structure of the rocker base 18 is different. In the case of the present embodiment, the support member 33 is provided below the rocker base 18.
Are provided for supporting, and the rocking machine base 18 rocks about the driving pulley position 35 of the belt conveyor 25 as a fulcrum when the hydraulic cylinder 34 is driven during transportation. Therefore, when the rocking table 18 is rocked to the vehicle body 32 side, the rocking table 18 is inclined with respect to the pulling member 39. In the case of the first embodiment, the oscillating machine base 18 is attached to the pulling member 7.
Were lowered in parallel, but the structure of this part is different.

A traveling device 36 is provided below the vehicle body 32. The traveling device 36 is provided with a crawler 37 opposed to the ground, and is grounded to the ground to drive the soil mixing and improving machine 31 when operating on site. Car body 3
A part of 2 has a shape that is slightly bent from a position outside the mounting position of the traveling device 36. In the present embodiment, the shape is slightly bent. A pair of trailer wheels 38 is provided at the lower portion of the vehicle body 32a at this bent portion.
Is provided.

The trailer wheels 38 are in a state of being separated from the ground and floating when the crawler 37 of the traveling device 36 is in contact with the ground. This is the reason why a part of the vehicle body 32 is bent. In the embodiment,
Although it has a bent shape, it may have a stepped shape so that the trailer wheel is mounted and separated from the ground.

On the other hand, a traction member 39 is provided at the end of the vehicle body 32 opposite to the trailer wheel 38. Unlike the case of the first embodiment, the pulling member 39 is installed with a step slightly below the vehicle body and is inclined. However, during transportation, when the traction member 39 is coupled to the track tractor 9, it becomes parallel to the track tractor 9. The devices such as the rocker base 18 provided on the pulling member 39 are the same as described above.

A lifting device for raising and lowering the vehicle body 32, that is, a trailer jack 40 corresponding to the supporting device 3 of the first embodiment is provided at the end of the vehicle body 32 near the towing member 39. When moving the soil mixing and improving machine 31, as described above, the soil supply device 19 and the like are moved to the rocking machine base 1.
By lowering the position of the center of gravity by swinging operation 8 to lower the position of the center of gravity, the improver device 22 is removed, and a part of the discharge conveyor 15 is folded and housed to reduce the height to a stable and compact state.

Subsequently, the trailer jack 40 is lowered, and the vehicle body 32 is swung about the trailer wheels 38 as a fulcrum to move the traveling device 3
The crawler 37 of 6 is separated from the ground and lifted upward.
The truck tractor 9 is inserted into the pulling member 39 side while being lifted to the upper position. At the time of insertion, the vehicle body 32 is lowered and the connecting device 8 of the pulling member 39 is engaged with and coupled to the track tractor 9.

After that, when the trailer jack 40 is raised and stored in the vehicle body 32, the soil mixing improving machine 31 main body is supported by the wheels of the truck tractor 9 and the trailer wheels 38 with the traveling device 36 floating. It can be transported. The trailer jack 40 is a soil mixing improver 3
When 1 is fixed and operated, it can also be used as a supporting device that is supported and fixed to the ground similarly to the first embodiment.

The storage position of the removed improving agent device 22 is not limited, but for example, on the improving machine, a stay which can be taken in and out is provided on the side of the discharge conveyor 15 and stored in the overhanging stay. It is also possible to do so (chain line position).

Next, the operating state will be described. Figure 3
Shows the state where the soil mixing improver 31 main body is removed from the truck tractor 9 and the crawler 37 of the traveling device 36 is in contact with the ground. The method of lowering the vehicle body 32 may be performed in the reverse process of lifting. In this case, the trailer wheels 38 are off the ground.

As for the soil supplying device 19 and the like, the soil supplying device 19 and the improving agent device 22 and the like are lifted upward by the rocking motion of the rocking machine base so that the supporting member 3 can be operated.
Discharge conveyor 1 supported by 3 and folded and stored
A part of 5 is returned to its original position. In this state, the heavy devices are concentrated on the upper part of the vehicle body 32 at the position of the crawler 37, and the devices are arranged in a well-balanced front and rear direction. In such a state, the soil mixing and improving device 31 can be moved by itself to a required position on the site.

[0042]

As described above, the improving machine of the present invention has a low center of gravity and is capable of performing a series of soil improving operations. The wheels were used for safety during transportation, and the traveling device allowed for self-propelled operation during operation, resulting in work safety, resulting in an efficient and improved machine.

Further, since each device is placed inside the vehicle body, it is an improved machine which is compact, secure, and secure. In addition, it is not necessary to carry the entire improvement machine by mounting it on a transport vehicle as in the past, so the work efficiency is improved by the reduction of the work man-hour, and the soil mixing improvement machine is economically superior.

[Brief description of drawings]

FIG. 1 is a side view showing an entire soil mixing and improving machine according to a first embodiment.

FIG. 2 is a side view showing the entire soil mixing and improving machine of Embodiment 2 and showing a moving state.

FIG. 3 is a side view showing an operating state in FIG.

FIG. 4 is a plan view of FIG.

[Explanation of symbols]

1, 31 ... Soil mixing improver 2, 32 ... Body 3 ... Supporting device 5, 38 ... Trailer wheels 6, 39 ... Traction device 10 ... Drive device 13 ... Crushing device 14 ... Ejection device 18 ... rocker base 19 ... Soil supply device 22 ... Improver device 25 ... Conveyor 26. Mixing and stirring device 36 ... Traveling device

─────────────────────────────────────────────────── ─── Continuation of the front page (72) Kenichiro Dan, inventor 2246, Amakusa, Asahi-machi, Takeo-shi, Saga 1 No. 2246, Nakayama Iron Works Co., Ltd. (72) Yoshinobu Watanabe, 2246, Amaku-ku, Asahi-machi, Takeo, Saga No. 1 Nakayama Iron Works Co., Ltd. (72) Inventor Shinsuke Inoue 2246, Amakusa, Asahi-cho, Takeo City, Saga Prefecture 1 No. 1 Nakayama Iron Works Co., Ltd. (56) Reference JP-A-9-195266 (JP, A) 2000-226864 (JP, A) International publication 99/049976 (WO, A1) (58) Fields investigated (Int.Cl. ⁷ , DB name) E02F 7/00 E02D 3/12 102

Claims (11)

(57) [Claims] Claim: What is claimed is: 1. An improved machine for supplying a solidifying agent to soil and mixing it to improve the soil quality, a vehicle body having a partly bent body, and a traveling machine provided under the vehicle body for self-propelling the improved machine. An apparatus, a towing device provided at one end of the vehicle body and connectable to a towing vehicle, a trailer wheel provided at a bending portion of the vehicle body, and a crushing device mounted at a central portion on the vehicle body, A mixing and stirring device provided on the vehicle body adjacent to the crushing device, an improving device mounted on the vehicle body adjacent to the mixing and stirring device to supply the improving agent, and adjacent to the improving device, A soil supply device which is provided on the side of the traction device and supplies soil, and a drive device which is provided at a position facing the mixing and stirring device with the crushing device as a boundary and which drives a device mounted on the vehicle body; The crushing device is installed adjacent to the drive unit. A soil mixing and improving machine comprising a discharging device for discharging the improved soil that has been crushed to the outside of the vehicle body. 2. The soil mixing improver according to claim 1 , wherein the soil supply device includes a vibrating device. 3. A soil mix improvement machine according to claim 1 or 2, wherein the soil feeder, the position changing device capable of changing the position of the modifier device and the mixing and stirring device on the traction device A soil mixing and improving machine characterized by being provided. 4. The soil mixing and improving machine according to claim 1 or 2, wherein a conveyor that conveys the soil and the improving agent to the mixing and stirring apparatus and the crushing apparatus is provided below the soil supplying apparatus and the improving agent apparatus. A soil mixing and improving machine characterized by being provided. 5. The soil mixing improver according to claim 1 or 2, wherein the improving agent device has a removable structure. 6. The soil mixing improver according to claim 1 or 2, wherein the discharging device is provided with a mixing cutter for mixing the improved soil conveyed by the crushing device. Machine. 7. The soil mixing improver according to claim 1 or 2, wherein the soil supply device includes a hopper having a buffer member at the edge of the soil charging port. 8. The soil mixing improver according to claim 1, wherein a part of the discharging device is bendable and is housed in the vehicle body. 9. The soil mixing and improving machine according to claim 1 or 2, wherein a lifting device for rocking the trailer wheel about a fulcrum to separate the traveling device from the ground and lifting the vehicle body is provided on the vehicle body. A soil mixing and improving machine characterized by that. 10. The soil mixing improver according to claim 1 , wherein the traction device is arranged on the ground side with a step from the vehicle body mounting position. 11. The soil mixing improving machine according to claim 3 , wherein the position changing device is on the traction device, and the soil supplying device, the improving agent device, the mixing stirring device, and the conveyor are placed on the position changing device. A soil mixing and improving machine, which is a device that vertically shifts the rocker base by means of a hydraulic cylinder.