WO1997008079A1

WO1997008079A1 - Soil improving machine

Info

Publication number: WO1997008079A1
Application number: PCT/JP1996/002458
Authority: WO
Inventors: Yoshimasa Tanaka; Hiroshi Shimizu; Hajime Shimomura; Taneaki Hujino; Naoya Nomura
Original assignee: Komatsu Ltd.
Priority date: 1995-08-31
Filing date: 1996-08-30
Publication date: 1997-03-06
Also published as: KR100407875B1; KR19990044141A; DE19681545T1; DE19681545C2

Abstract

A soil improving machine comprises a crushing and mixing device (A) provided with a housing (1) having an opening (5) at a top thereof and a plurality of rotary type disintegrating and mixing members (3) for disintegrating, mixing and agitating earth and sand, and an improvement material charged from the opening, an earth and sand supplying device (B) arranged on a top of the crushing and mixing device and provided with an earth and sand discharge opening (13) having a predetermined size and communicating with the opening, a rotary-type earth and sand feeder (14) for supplying earth and sand in predetermined amounts to the earth and sand discharge opening, and an earth and sand hopper (20), and an improvement material supplying device arranged on a top of the earth and sand supplying device and provided with an improvement material discharge opening (81) having a predetermined size and communicating with the earth and sand supplying device on an upstream side of the earth and sand discharge opening, a rotary-type improvement material feeder (60) for supplying an improvement material in predetermined amounts to the earth and sand discharge opening, and an improvement material hopper (61).

Description

Description Soil improvement machine Technical field

The present invention relates to a soil improvement machine that regenerates good-quality earth and sand by mixing and mixing soil and soil improvement material generated by excavation with a crushing and mixing device. And a device for crushing and mixing earth and sand with improved materials. Background art

The excavated soil may contain a large amount of water, or may have poor soil quality with a mixture of pebbles, rock fragments, and concrete fragments.The soil cannot be used as backfill material. There is. Therefore, various soil improvement machines have been proposed for improving the poor soil quality to good soil quality.

For example, as shown in Japanese Utility Model Application Laid-Open No. 62-398727, the earth and sand supply device supplies soil to the crushing and mixing device, and the improvement material supply device supplies the improving material to the crushing and mixing device. There is known a soil improvement machine that mixes and mixes soil and an improving material to improve the soil into good soil.

The earth and sand supply device of this soil improvement machine is composed of a hot pot, a soil quantification device and a belt conveyor, so the entire equipment is large and the installation space is very large, resulting in a large soil improvement machine. Therefore, this is a major obstacle when the self-propelled soil improvement machine is used. In addition, the improved material supply device of this soil improvement machine is composed of a hot pot and an improved material quantitative supply device. The improved material quantitative supply device is provided at the outlet at the lower part of the hopper, and is long. As the size of the soil improvement machine becomes very large and the installation space becomes very large, the size of the soil improvement machine becomes large, which is a major obstacle to making the soil improvement machine self-propelled.

In the above-mentioned sediment supply device, the sediment in the hopper is dropped on the belt conveyor by the sediment quantitative supply device, and the sediment is fed into the crushing and mixing device by the belt conveyor. Even if it is dropped at a constant rate per hour, the earth and sand may disperse while being transported by the belt conveyor, and it may not be possible to accurately input a fixed amount of earth and sand per unit time into the crushing / mixing device, and the amount of sediment may become barracks. Therefore, even though the amount of the improving material fed into the crushing / mixing device is fixed per unit time, as described above, the amount of soil put into the crushing / mixing device is equal to the barracks and the soil quality of the improved May not be soil.

On the other hand, in the above-mentioned improved material supply device, the improved material in the hopper is conveyed to the crushing and mixing device by the improved material constant amount supply device, so that the improved material such as cement and lime is conveyed. Leakage into the atmosphere may occur on the way, which may not only adversely affect the surrounding environment, but also reduce the amount of the improved material in the crushing / mixing device because the amount of the improved material cannot be accurately introduced per unit time. Sometimes.

As described above, the amount of the improving material per unit time supplied to the crushing and mixing apparatus is not the barracks, and the soil of the improved earth and sand is not the predetermined soil. Therefore, an object of the present invention is to provide a sediment supply apparatus that can be miniaturized so as to be suitable for a self-propelled type and that the improved soil has a predetermined soil quality. Disclosure of the invention

In order to achieve the above object, one mode of the soil improvement machine according to the present invention is:

A crushing / mixing device comprising: a housing having an opening at an upper part; a plurality of crushing-type crushing / mixing elements for crushing and mixing and mixing the earth and sand introduced from the opening and the improving material;

A sediment discharge opening having a predetermined size, which is provided at an upper portion of the crushing and mixing device and communicates with the opening, and a rotary sediment feeder that supplies a fixed amount of sediment to the sediment discharge opening. And a sediment supply device having a sediment hotbed,

An improved material discharge opening having a predetermined size, which is provided at an upper portion of the sediment supply device and communicates with the sediment supply device at an upstream side of the sediment discharge opening; It includes a rotary improving material feeder for supplying the improving material each time, and an improving material supplying device provided with an improving material hobber.

In the above configuration,

A bottom plate having an outer rising piece on the outer peripheral edge and having a sediment discharge opening near the outer peripheral edge;

An earth and sand feeder rotatably supported on the bottom plate, the earth and sand feeder having a plurality of feeder blades connected between the inner wall and the outer wall, and the both walls; and a driving mechanism for rotating and driving the earth and sand feeder. A sliding blade that is located closer to the direction opposite to the earth and sand feeder rotation direction than the earth and sand discharge opening and faces the upper end surface of the feeder blade;

A sediment hopper comprising a plate provided above the sediment discharge opening, wherein the outer rising piece, which is higher than the feeder blade, and one of the outer walls and the bottom plate, constitute the sediment hopper. It is preferred to have a feeding device.

According to the above configuration,

Since the earth and sand feeder rotatably supports the earth and sand feeder on the bottom plate that constitutes the earth and sand hopper, it is compact as a whole and is suitable as a sand and earth supply device used for self-propelled soil improvement equipment. Become.

In addition, by rotating the sediment feeder, the feeder blade pushes the earth and sand toward the cutting blade, and when passing through the cutting blade, the earth and sand is cut and moved to the sediment discharge opening. Since the height of the sediment is constant, the amount of sediment falling from the sediment discharge opening per unit time is constant, and when the sediment is supplied to the crushing and mixing device, the amount of sediment supplied per unit time The amount can be constant.

Further, in the earth and sand supply device, the feeder blade is inclined at a predetermined angle so that an outer portion is located in a direction opposite to a rotation direction of the earth and sand feeder than an inner portion with respect to a radiation direction of the feeder blade. It is desirable to do so.

According to this configuration, since the feeder blade is inclined at a predetermined angle with respect to the radial direction and in a direction opposite to the rotation direction, the sediment loaded near the center of the sediment feeder. Rotate the earth and sand feeder Since the earth and sand is pushed outward along the feeder blade when moving it, the amount of earth and sand is uniform from the inner circumference to the outer circumference. The earth and sand supply device further includes an outboard blade facing the upper surface of the earth and sand feeder from the rotation center of the earth and sand feeder to the vicinity of the inner wall, and the outboard blade is arranged in a radial direction. It is desirable that the inner portion is inclined at a predetermined angle so as to be located on the opposite side of the earth and sand discharge opening from the center of tillage of the earth and sand feeder.

According to this configuration, since the earth and sand near the rotation center of the earth and sand feeder is pushed to the outer peripheral side by the outboard blade, the earth and sand do not remain near the rotation center.

Further, in the earth and sand supply device, it is preferable to attach a spill prevention plate to the outside of the ground blade portion.

Further, it is preferable that a gate facing the earth and sand discharge opening is provided in the earth and sand supply device, and the gate is made movable with respect to the earth and sand discharge opening.

According to this configuration, if the position of the gate projecting into the sediment discharge opening is changed, the position at which the sediment starts to fall changes, so that the sediment having different viscosity is always mixed at the center of the opening of the mixing and mixing device. (The middle part of the disintegrating mixture).

In the above configuration,

A hollow main body composed of a bottom wall having an improving material discharge opening, a peripheral wall, and an upper wall having an opening; and a plurality of feeder brakes rotatably provided in the main body. An improved material feeder comprising: a rotating body having a rotating member; and a drive mechanism for driving the rotating body;

Improved material hob attached to the periphery of the opening in the upper wall of the main body When,

It is desirable to provide an improvement material supply device including a lower surface inside the improvement material hobber and a cover member positioned above the discharge opening.

According to this configuration,

The improvement material supply device has an improvement material feeder attached to the upper wall of the improvement material feeder, and the improvement material in the improvement material feeder is formed through the improvement material discharge opening formed on the bottom wall of the improvement material feeder. Since the material is dropped and the improvement material is supplied, the entire device can be reduced in size and the installation space can be narrowed.

In addition, by rotating the rotating body of the improvement material feeder, the improvement material is moved by the feeder blade, falls from the improvement material discharge opening, and is supplied to the earth and sand supply device. If the size of the discharge opening is fixed and the rotation speed of the rotating body is fixed, it is possible to supply a constant amount of an improved material such as cement or lime per unit time.

In the improving material supply device, the lower end surface of the cover member is located immediately below the rotating body, near the outer peripheral wall on the lower surface of the upper wall of the main body, and is opposed to the upper end surface of the feeder blade. It is desirable to include a cutting blade.

Further, in the improving material supply device, it is desirable that the height of the improving material hob be adjustable.

Further, in the improving material supply device, it is desirable that the upper portion of the improving material hob be openable and closable.

In the above configuration,

A cylindrical lower portion having a concave portion in the lower part from the middle in the vertical direction of the peripheral wall, _

7

An improving material hobber having a cylindrical upper portion provided with an improving material discharge opening in a bottom wall facing the concave portion;

An improved material feeder provided rotatably in the upper portion of the hub and having a plurality of feeder blades, and a 5 drive mechanism for rotating and driving the rotary body;

An improved material supply device is provided in the lower portion of the hobber, the improved material supply device including a bottom plate urged upward by a spring having an elasticity enough to descend by the weight of the improved material. Desirable.

In this improved material supply device, an improved material feeder is installed in the improved material hopper, and the improved material is dropped from the improved material discharge opening and supplied to the earth and sand supply device while the bottom plate is raised by a spring. Therefore, if the size of the improvement material discharge opening is fixed and the rotation speed of the improvement material feeder is fixed, the improvement material can be supplied at a constant rate per unit time.

5 In addition, since the improvement material discharge opening is located in the middle of the improvement material hob in the vertical direction, the height of the hopper projecting upward from the improvement material discharge opening is reduced, and therefore, the height is higher than the sediment supply device. Since the height of the protruding portion is reduced and the entire soil improvement machine is reduced in size, it is suitable as a feeder for a self-propelled soil improvement machine.

0 Also, in the above

A plurality of first chains suspended at an interval facing an inner surface of the housing to which soil is attached;

A plurality of second chains suspended between the inner surface of the housing 1 to which the earth and sand adhere and the respective first tunes; 5 a direction of a ring constituting the first chain; 2 chains It is desirable to provide a crushing and mixing device including a sediment adhesion prevention device in which the direction of the ring constituting 90 degrees is included.

According to this crushing and mixing device, the earth and sand scattered during the mixing and stirring does not scatter to the inner surface of the housing due to the plurality of first chains and the plurality of second chains, so that the earth and sand adhere to the inner surface of the housing. And can be prevented.

In the above sediment adhesion preventing device, it is desirable to provide a vibration mechanism that vibrates the first chain and the second chain from outside. And as the vibration mechanism,

A shaft pivotally attached to the housing, a lever fixed to the shaft within the housing, a rod attached to the lever, and in contact with the first chain and the second chain; and the housing. An arm fixed to the shaft outside, and a weight attached to the arm, wherein the arm swings by the vibration of the housing, and the lever swings. A shaft pivotally attached to the housing, a lever fixed to the shaft in the housing, a rod attached to the lever and in contact with the first chain and the second chain; and the housing A handle fixed to the shaft outside, wherein the handle is swung to swing the lever.

A shaft pivotally attached to the housing; a lever fixed to the shaft in the housing; a rod attached to the lever and in contact with the first chain and the second chain; And a motor that drives the shaft, and the motor rotates the shaft forward and reverse. There is something we do. BRIEF DESCRIPTION OF THE FIGURES

The invention will be better understood from the following detailed description and the accompanying drawings illustrating an embodiment of the invention. The embodiments shown in the accompanying drawings are not intended to specify the invention, but merely to facilitate explanation and understanding.

In the figure,

FIG. 1 is an overall front view showing an embodiment of the earth and sand supply device according to the present invention.

FIG. 2 is an overall plan view of the one embodiment.

FIG. 3 is an overall left side view of the embodiment.

FIG. 4 is a plan view of the first embodiment of the earth and sand supply device.

FIG. 5 is a sectional view taken along line VV of FIG.

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

FIG. 7 is a plan view of the first embodiment of the improving material supply device.

FIG. 8 is a longitudinal sectional view of the first embodiment of the improving material supply device. FIG. 9 is a left side view of the first embodiment of the improving material supply device. FIG. 10 is a cross-sectional view near the discharge opening of the second embodiment of the earth and sand supply device.

FIG. 11 is a sectional view taken along the line XI—XI of FIG.

FIG. 12 is a longitudinal sectional view showing another example of the feeder blade of the earth and sand supply device.

FIG. 13 is a longitudinal sectional view showing a second embodiment of the improving material supply device. FIG. 14 is a sectional view taken along the line XIV—XIV in FIG. FIG. 15 is a sectional view taken along the line XV—XV in FIG.

FIG. 16 is a partially broken front view showing the first embodiment of the crushing and mixing apparatus for improving material and earth and sand.

FIG. 17 is a partially broken side view of the first embodiment of the crushing and mixing apparatus.

FIG. 18 is a partially broken front view showing a second embodiment of the crushing and mixing apparatus for improving material and earth and sand.

FIG. 19 is a partially broken front view showing a third embodiment of the crushing and mixing apparatus for improving material and earth and sand. BEST MODE FOR CARRYING OUT THE INVENTION

As shown in Fig. 1, Fig. 2 and Fig. 3, the sediment supply device B is provided above the crushing and mixing device A, and the improving material supply device C is provided above the sediment supply device B. Soil improvement machine is configured

The crushing and mixing device A is mounted on the vehicle body of the traveling vehicle, the earth and sand supply device B is supported by the vehicle body, and the improving material supply device C is supported by the vehicle body and the crushing and mixing device A.

The crushing and mixing device A is a device in which a plurality of shafts 2 are rotatably provided in a housing 1 and a plurality of crushing mixers 3 are provided radially on each of the shafts 2. When the soil and the improving material are introduced through the opening 5, the soil is finely crushed, and at the same time, the soil and the improving material are mixed and stirred to be discharged from the lower part of the housing as the improved soil. ing.

First, the first embodiment of the earth and sand supply device B is shown in FIGS. 4 and 5. As shown, a bottom plate 10 is provided. The bottom plate 10 has a circular plane shape, and has an outer rising piece 11 provided in a ring shape along its outer peripheral edge, and an inner rising piece 12 provided in a ring shape on the inner side. . Further, the bottom plate 10 is formed so that the earth and sand discharge opening 13 faces the opening 5 of the crushing and mixing apparatus A.

The bottom plate 10 is provided with a rotatable earth and sand feeder 14 rotatably. The earth and sand feeder 14 has a ring-shaped inner wall 15 and a ring-shaped outer wall 16, and a plurality of feeder blades 17 are provided between the two walls 15 and 16 in a rotational direction. Are obliquely provided at equal intervals. More specifically, a plurality of feeder blades 17 are provided between the walls 15 and 16, and the outer portion 17 a is the inner side in the radial direction toward the rotation center 14 a of the sediment feeder 14. They are connected at a predetermined angle / 3 in an inclined position so that they are located in a direction opposite to the rotation direction of the earth and sand feeder 14 than the part 17b. The inner wall 15, the outer wall 16, and a pair of adjacent feeder blades 17 constitute a feeder chamber b having the same volume. Further, as shown in FIG. 5, an upper plate 18 is attached to the inner wall 15, and the upper plate 18 is rotatably attached to the bottom plate 10 by a supporting and driving mechanism 19. . The outer wall 16 is higher than the inner wall 15 and protrudes upward, and the outer wall 16, the bottom wall 10, and the inner rising piece 12 constitute a sediment hopper 20. .

The supporting and driving mechanism 19 is rotatably fitted to the outer ring-shaped body 22 fixed to the bottom plate 10 with a bolt 21 and the outer ring-shaped body 22 fixed to the upper plate 18. The inner ring 23 combined, the ring teeth 24 provided on the inner peripheral surface of the inner ring 23, the drive motor 25 mounted on the lower surface of the bottom plate 10, Drive motor 25 The earth and sand feeder 14 is rotated in one direction (the direction of arrow a) by driving the drive motor 25. It is supposed to be. Therefore, there is a gap between the upper surface of the bottom plate 10 and the lower end surface of the inner wall 15 of the earth and sand feeder 14, the lower end surface of the outer wall 16, and the lower end surface of the feeder blade 17.

A reinforcing material 27 is connected between adjacent feeder blades 17. The reinforcing material 27 also serves to prevent feed of large stones and the like into the crushing and mixing apparatus A in addition to reinforcing the feeder blade.

At the center of the bottom plate 10 (the center of rotation of the earth and sand feeder 14), an upright support 28 is attached. The inner support column 28 is formed with a hole 29 formed at the center of rotation of the upper plate 18 of the earth and sand feeder 14 and the hole 29.

29 penetrates the cylindrical body 30 fixed to the periphery. The inner support 28 protrudes slightly upward from the upper end of the outer wall 16 of the sediment feeder 14, and the outer support 28 attached to the outer rising piece 11 from the inner support 28. A plate 32 is attached to the vertical member 31 in parallel with the bottom plate 10.

The plate 32 has an end surface 32a near the earth and sand discharge opening 13 in an arc shape, and an opening window 32b near the rotation center of the earth and sand feeder 14 is formed. The opening window 32 b faces the upper plate 18 of the earth and sand feeder 14.

In addition, on the outer side of the plate 32, a scouring blade is provided.

3 3 is mounted via bracket 34, and plate 3 2 is provided with an outer feed blade 35 via bracket 36 near the center. Installed.

The wear blade 33 has a vertical cross-sectional shape curved in an arc in the horizontal direction, and is located between the inner wall 15 and the outer wall 16 of the earth and sand feeder 14. The lower end surface 3 3b of the trimmer blade 33 faces the upper end surface 17c of the feeder blade 17 with a slight gap, and the upper end surface 33c protrudes above the plate 32. . In addition, the wear blade 33 has an oblique radial shape inclined more in the direction opposite to the rotation direction of the earth and sand feeder 14 than the earth and sand discharge opening 13.

Specifically, the outer part 33d is located in the direction opposite to the feeder rotation direction more than the inner part 33e with respect to the radiation direction toward the rotation center 14a of the sediment feeder 14. It has a posture at a predetermined angle α.

The worn-out blade 33 has a plane shape bent in a U-shape, and the bent portion 33 f is located near the inner wall 15. The outer feed blade 35 has an outer portion 35a slightly protruding from the inner wall 15 of the earth and sand feeder 14 toward the outer wall 16 and an inner portion 35b of the outer feed blade 35 has the earth and sand feeder 14. It is located near the center of rotation 14a. Further, the lower surface 35 c of the outer feed blade 35 faces the upper plate 1 いて with a slight gap therebetween, and the upper surface 35 d protrudes above the plate 32. The outer feed blade 35 is obliquely radial.

More specifically, the inner part 35b is closer to the rotation center 14a of the sediment feeder 14 in the radiation direction toward the center of rotation 14a than the center of rotation of the feeder 14a. It is at a predetermined angle of 7 so as to shift to the opposite side. Further, the wear blade 33 and the outer feed blade 35 are integrated. In other words, both blades 33 and 35 have a shape obtained by bending a plate material having a substantially C-shaped vertical cross section as a whole into a U-shape, and the bent portion C is formed by the inner wall 15. It is located slightly closer to the outer wall 16.

The portion of the bottom plate 10 which is close to the periphery of the bottom plate 10 and the sediment discharge opening 13 of the rising piece 11 becomes straight, and the vertical part of the L-shaped bracket 37 is fixed to the straight part of the rising piece 11. Then, as shown in FIG. 1, the horizontal portion of the bracket 37 is fixed to the upper wall 4 of the housing 1 of the crushing and mixing apparatus A with bolts 38.

A vertical plate 39 is attached to the opposite side of the plate 32 from the wear blade 33, that is, a position closer to the rotation direction of the earth and sand feeder 14 from the earth and sand discharge opening 13. Therefore, the sediment loaded in the hopper 20 is prevented from directly falling from the sediment discharge opening 13.

Here, the plate 32 may cover the sediment discharge opening 13 so as to form an improved material dropout in the plate 32.

Next, an operation of charging the earth and sand into the housing 1 of the crushing and mixing apparatus A according to the first embodiment of the earth and sand supply apparatus B will be described.

First, earth and sand excavated by a bucket of an excavator are loaded into the hopper 20. At this time, the earth and sand is loaded on the rotation center 14a (upper plate 18) of the earth and sand feeder 14 so that the earth and sand does not fall off from the hopper 20. However, the soil will not fall directly from the input opening 13 due to the plate 3 2. Drive the drive motor 25 to rotate the sediment feeder 14 in the direction of the arrow a, and use the feeder blade 17 to discharge the sediment from the sediment discharge opening 1 3 Move toward. At this time, since the feeder blade 17 is inclined at a predetermined angle with respect to the radial direction, the soil is removed from the outer wall from the feeder rotation center 14a by the feeder blade 17. Since it is pushed toward 16, earth and sand are evenly filled in each feeder room b between the inner wall 15 and the outer wall 16 and the adjacent feeder blade 17.

In addition, since the earth and sand moved by the feeder blade 17 is cut off when passing through the cutting blade 33, the height of the earth and sand in the feeder chamber b described above is cut off. The height reaches the lower end surface 33 b of the blade 33, and as a result, the amount of sediment in the feeder chamber b that has passed through the cutting blade 33 is constant, and the constant amount of sediment is It is dropped into the housing 1 through the opening 5 of the crushing and mixing apparatus A.

Because of this, the amount of sediment charged into the housing 1 of the crushing and mixing device A per unit time is always constant, and the unit time can be changed by changing the rotation speed of the sediment feeder 14. It is possible to arbitrarily adjust the amount of input sand per unit.

In addition, when the earth and sand moved by the feeder blade 17 is worn by the wear blade 33, the earth and sand remaining on the wear blade 33 rises and spills from the outer wall 16. However, as described above, the worn blade 33 is inclined at a predetermined angle with respect to the radial direction, so that the raised soil is moved along the worn blade 33 along the sand blade. It moves toward the rotor rotation center 14 a and spills less from the outer wall 16.

Note that a spill prevention plate 40 is located at a position on the outer wall 16 of the earth and sand feeder 14 opposite to the wear blade 33. this The spill prevention plate 40 is fixed to a supporting vertical member 42 attached to the bottom plate 10 and the outer rising piece 11 via a plurality of brackets 41. The earth and sand that had swelled in the part of de 33 was not spilled over the outer wall 16.

Also, the rotation of the sediment feeder 14 pushes the earth and sand at the center against the outer feed blade 35, and the outer feed blade 35 is inclined at a predetermined angle 7 with respect to the radial direction. Therefore, the earth and sand at the center moves outward along the outer feed blade 35, and is further fed into the feeder chamber b along the scissor blade 33. Sediment does not remain. '

In addition, when the earth and sand are loaded into the hopper 20, the earth and sand on the plate 32 falls on the upper plate 18 of the earth and sand feeder 14 from the opening window 32b, so that the earth and sand accumulate on the plate 32. Nothing.

Next, as shown in FIGS. 1, 2, and 3, the first embodiment of the improved material supply device C is composed of a rotary feeder 60 and a height-adjustable improved material hopper 6 1. ing. The rotary feeder 60 is mounted by a bracket 62 mounted on the upper part of the housing 1 of the crushing and mixing device A and a support column 63 mounted on the vehicle body. A part of 60 overlaps a part of the earth and sand supply device B so that the improving material is dropped and supplied to a part of the earth and sand supply device B. Then, an improvement material hopper 61 is mounted on the upper part of the rotary feeder 60.

(Structure of rotary feeder 60)

As shown in FIGS. 7, 8, and 9, the rotary feeder 60 includes a main body 64 having a hollow flat surface. This body A cylindrical outer wall 66 is fixed to an outer peripheral edge of a disk-shaped bottom wall 65, and a disk-shaped upper wall 67 is fixed to the outer peripheral wall 66 with bolts 68. A cylindrical inner peripheral wall 69 is fixed to the bottom wall 65 so as to be concentric with the outer peripheral wall 66 to form a hollow shape, and further has an annular concave portion 70 near the outer periphery. A rotating body 71 is rotatably housed in the annular recess 70 of the main body 64. The rotating body 71 is formed by connecting a plurality of feeder blades 75 obliquely radially between a peripheral wall 73 having an upper plate 72 and an outer peripheral wall 74, and fixed to the upper plate 72. Movable ring body 76 is rotatably supported by a fixed ring body 77 fixed to the bottom wall 65, and the inner peripheral wall 73, the outer peripheral wall 74, and a plurality of feeder blades 75 are attached to the main body.

It is designed to rotate along the annular concave portion 70 of 64. And a pinion rotated by a drive motor 78 attached to the bottom plate 65

Reference numeral 79 is combined with a ring-shaped internal tooth 80 formed on the outer peripheral surface of the movable ring body 76.

An improvement material discharge opening 81 is formed in a part of the bottom wall 65 facing the annular recess 70. The improved material discharge opening 81 is located above the sediment supply device B, and the improved material is dropped from the improved material discharge opening 81 by rotating the rotating body 71 to supply the sediment. It is supplied on the earth and sand in the location B.

(Structure of improved material Hotsuba 61)

The improved material hobber 61 is composed of a lower cylindrical body 92 and an upper cylindrical body 93. The lower cylinder 92 is fixed to the periphery of a circular opening 94 formed in the upper wall 67. The opening 94 is formed eccentrically with respect to the center of the upper wall 67 opposite to the improvement material discharge opening 81, and the size of the opening 94 is a part of the improvement material discharge opening 81. Opening to The larger the diameter. Further, the lower cross-sectional area (lower cylindrical body 92) of the improved material hobber 61 is increased, thereby increasing the volume of the improved material hobber 61.

A cover member 95 is attached to the lower inner peripheral surface of the lower cylindrical body 92 near the outlet 81. The cover member 95 is in the form of a vertical plate oblique to the vertical, and its lower end surface 95a is located above the improvement material discharge opening 81 in the upper plate 72 of the rotating body 71. Then, the improved material in the lower cylindrical body 92 falls along the cover member 95 onto the upper plate 72, but does not directly fall into the discharge port 81.

In other words, since the circular opening 94 has a large diameter in order to increase the diameter of the lower cylinder 92, the improved material in the lower cylinder 92 is discharged without the covering member 95. It is impossible to make the supply amount of the improving material constant by dropping directly into the opening 81.

As shown in Fig. 7 and Fig. 8, the lower end surface 95a of the covering member 95 deviates from the tillage body 71 to a point near the upper end surface of the feeder blade 75, and the outer wall 6 For example, a hard blade 95 b made of, for example, hard rubber and extending to near 6 is fixed, and the extended portion of the blade 95 b is fixed to the lower surface of the upper wall 67 of the main body 64.

In addition, a cutter 96 is attached to the lower portion of the inner peripheral surface of the lower cylindrical body 92, and the cutter 96 has four cutting blades 97 formed in a cross shape so that the central portion has an upwardly sharp pointed shape. As a result, it has a central point 98.

Further, the upper cylindrical body 93 is formed in a bellows shape by a flexible material so that the height can be adjusted, and the lower part of the upper cylindrical body 93 is a lower cylindrical body. The upper part of the upper cylindrical body 93 is connected to the upper part of the upper cylindrical body 93 with a string or the like, whereby the upper part of the upper cylindrical body 93 is connected to the main body 64 of the improvement material feeder 60. The improvement material hotbed 61 is sealed.

A cylindrical body 101 is attached to the lower cylindrical body 92 via a bracket 100, and a lower portion of the support 102 is slidably fitted into the cylindrical body 101, and Support pin 104 from hole 103 of body 101

The column 102 can be inserted into the lower part of the column 102 to fix the column 102, so that the column 102 can expand and contract in the vertical direction. The upper portion of the support 102 supports the upper portion of the upper tubular body 93 via the cable 105.

Next, the supply operation of the improving material according to the first embodiment of the improving material supply device C will be described.

First, the upper part of the upper cylindrical body 93 is opened, and the bag 110 filled with the improving material is lifted with a crane or the like and put into the improving material hopper 61, and the bottom of the bag 110 is caught by the cutter 9. The improved material is broken by the cutting blade 9 7 of 6, and the improved material is put into the improved material hopper 6 1. Then, the bag 110 is removed, and the upper portion of the upper cylindrical body 93 is bundled and connected with a string.

As a result, the improved material in the improved material hose 61 falls into the main body 64 of the improved material feeder 60, but the improved material discharge opening 81 is formed by the covering member 95. Does not fall directly.

In the state described above, when the driving motor 78 is driven to rotate the rotating body 71, the improvement material is moved by the feeder blade 75, and is also cut by the wear blade 95b to a certain amount. After that, it falls from the improved material discharge opening 81 and is supplied to the sediment supply device B, The supply amount of the improving material per unit time is determined by the rotating speed of the rotating body 71 if the size of the improving material discharge opening 81 is fixed. Next, the earth and sand supplying device B and the improving material supplying device C The positional relationship of will be described.

As shown in Fig. 2, the edge of the plate 32 of the earth and sand supply device B having the arc-shaped one end surface 32a contacts the lower surface of the outer peripheral edge of the bottom wall 65 of the improvement material feeder 60. The improvement material discharge opening 81 of the improvement material feeder 60 is opened above the feeder chamber b, and the improvement material discharge opening 81 is provided with a cutting blade 3 3 and the earth and sand discharge opening 13.

Because of this, the improvement material is dropped and supplied onto the fixed amount of soil by the grinding blade 33, and the ratio of the amount of soil and the amount of the improvement material input to the crushing and mixing device A is a set value. This makes it possible to improve the soil quality from bad soil to good quality sand.

Next, a second embodiment of the earth and sand supply device B will be described.

As shown in Fig. 10 and Fig. 11, the gate 120 is located along the guide 1 21 in the bottom plate 10 at a position opposite to the direction of rotation than the earth discharge opening 13 on the bottom plate 10. Attached so that it can move forward and backward toward 13, a cylinder 122 is connected between the gate 120 and the bottom plate 10, and the gate 122 is moved by the cylinder 122. I do.

In this way, if the position where the cylinder 122 protrudes into the sediment discharge opening 13 of the gate 120 by extending the cylinder 122 changes, the position where the sediment starts to fall changes Therefore, the earth and sand having different viscosities are always crushed. The center of the opening 5 of the mixing device A (the center of the pair of Part) can be dropped.

For example, in the case of soil with low viscosity and easy to fall like sandy soil, the gate 120 is projected into the sediment discharge opening 13 as shown by the imaginary line in Fig. Can move on the gate 120 and fall from the edge of the gate 120 and fall to the center, making it hard to drop due to the large viscosity like clay soil In the case of sediment, the gate 120 is retracted away from the sediment discharge opening 13 as shown by the solid line in Fig. 11 so that the sediment is closer to the inner edge of the sediment discharge opening 13. It can fall and fall to the center.

Also, when the upper end surface of the feeder blade 17 is horizontal as in the above embodiment, the difference in peripheral speed between the inner and outer circumferences increases the amount of earth and sand supplied on the outer circumference. If the upper end face 17c of the feeder blade 17 is inclined with respect to the horizontal so that the inner peripheral side is higher and the outer peripheral side is lower as shown in the figure, the increase in the amount of sediment supply on the outer peripheral side is prevented. can do.

In this case, as shown in Fig. 12, the heights on the outer and inner peripheral sides of feeder blade 17 are ho and hi, respectively, and the positions of outer wall 16 and inner wall 15 of sediment feeder 14 are shown. Assuming that the diameters of the parts to be performed are do and di, respectively, h ₀ / hi = di / do is good.

Next, a description will be given of a second embodiment of the improving material supply device.

As shown in Fig. 13, Fig. 14 and Fig. 15, the improved material hobber 120 is replaced with a cylindrical upper part 121 having a circular planar shape, and a concave part 122 in a part of the peripheral wall. The upper surface of the concave portion 122, that is, the cylindrical lower portion, An improvement material discharge opening 1 25 is formed in the bottom wall 1 2 4 of the upper 1 2 1, and a discharge guide plate 1 2 6 is attached below the improvement material discharge opening 1 2 5.

Inside the circular upper portion 121 of the improvement material hopper 120, an improvement material feeder 129 having a feeder blade 128 attached radially to a rotating body 127 is provided rotatably. The longitudinal axis 130 fixed to the rotating body 127 is connected to a drive motor 132 provided to protrude below the bottom wall 131.

A bottom plate 133 is provided in a lower portion 123 of the improvement material hopper 130 so as to be vertically movable along a longitudinal axis 130. This bottom plate 133 is provided with a biasing means, for example, a spring. At 1 3 4, due to its own weight and the weight of the improved material, it was pushed upward and urged with enough force that it could not be piled up to move downward.

In addition, a lid 135 is detachably provided on the upper part of the improvement material hopper 120.

Next, a supply operation of the improving material according to the second embodiment of the improving material supplying apparatus will be described.

First, open the lid 13 5 and put the improvement material into the improvement material hobber 120, and the bottom plate 13 3 descends against the elasticity of the spring 13 4 by the weight of the improvement material. The improved material can be filled into the improved material hopper 120.

Next, when the improving material feeder 12 9 is rotated by the drive motor 13 2, the improving material in the upper part 121 of the improving material hopper 120 is sequentially from the improving material discharge opening 125. It falls and is supplied to the earth and sand supply device B from the discharge guide plate 1 25. At this time, the amount of improved material in the improved material The lower the weight, the lower the weight of the bottom plate 1 33, and the elasticity of the spring 1 34 increases.

Thus, this operation is sequentially performed, and all the improving material in the improving material heater 120 is discharged.

As described above, when the improved material discharge opening 1 25 is located at the middle of the improved material hobber 120 in the vertical direction, the height of the hopper portion projecting upward from the improved material discharge opening 125 is low. For example, as shown by the imaginary line in Fig. 13, the height protruding above the sediment supply device B is reduced, and in the case of a self-propelled soil improvement machine, the overall height of the machine is reduced. I like it.

As the improving material, cement, cement-based solidifying agent, quicklime, slaked lime, lime-based solidifying agent, foam beads, and the like are used.

Next, a first embodiment of a device for mixing the improving material and earth and sand, that is, a crushing and mixing device A will be described.

As shown in FIG. 16, the crushing and mixing apparatus A is configured such that a plurality of shafts 2 are rotatably provided in a housing 1, and a plurality of crushing mixers 3 are radially provided on each of the shafts 2. When the earth and sand and the improving material are introduced through the opening 5 formed in the upper wall 4 of the housing 1, the earth and sand are finely crushed, and at the same time, the earth and sand and the improving material are mixed and agitated and discharged from below the housing 1. It has become.

Since the crushing and mixing device A is configured as described above, the sediment injected into the housing 1 is separated by the crushing mixer 3 into the front inner surface la and the rear inner surface lb of the housing 1 (parallel to the rotation axis 2). Since it scatters and adheres to the inner surface), the sediment adhesion prevention device D is installed facing the front inner surface 1a and the rear inner surface 1b of the housing 1. Next, details of the earth and sand adhesion preventing device D will be described.

As shown in Fig. 16 and Fig. 17, an opening 144 is formed at the top of each of the front wall 140 and the rear wall 141 of the housing 1, and bolts are formed around the periphery of the opening 144. Attach plate 1 4 4 at 1 4 3, and suspend a plurality of first chains 1 4 5 on the plate 1 4 4 with hooks 1 4 6 at intervals in the horizontal direction. A plurality of second chains 14 7 are connected to the first chain 14 5 in the front-rear direction (left and right directions in the drawing) and the left and right directions (perpendicular to the drawing). 8 hanging.

The first chain 145 is formed by sequentially connecting a plurality of rings 149 with the upper and lower adjacent rings 149 being 90 degrees opposite in direction. The direction of 49 alternates between the front-to-back direction in which the hole faces in the front-back direction and the left-right direction in which the hole faces right-to-left. The second chain 147 is formed by sequentially connecting a plurality of rings 150 with the upper and lower adjacent rings 150 turned 90 degrees in opposite directions, and the rings 15 The direction of 0 is alternating between the front and rear direction where the hole faces in the front and rear direction and the left and right direction where the hole faces in the left and right direction.

The rings 1449 of the first chain 1445 and the rings 150 of the second chain 144 are in the same direction as the rings 1449 and 150 located at the same height. Is the opposite. For example, if the ring 149 of the first chain 145 is facing forward and backward, the ring 150 of the second chain 147 is facing left and right.

Thus, the ring 14 9 of the first chain 14 5 and the ring 1 50 of the second chain 14 7 are overlapped by the front and rear rings in the front and rear directions, so that the earth and sand is removed. Harder to pass through the two rings, Therefore, it becomes difficult for the earth and sand to adhere to the front inner surface 1a and the rear inner surface 1b. A shaft 152 is rotatably supported at an upper and lower intermediate position near the front wall 140 and the rear wall 141 on one of the left and right side walls 15 1 of the housing 1. A lever 15 3 is fixed to a portion of the shaft 15 2 projecting into the housing 1. A first rod 1554 and a second rod 1555 are attached to the lever 1553 so as to be spaced apart in the front-rear direction.

In addition, an arm 156 is attached to a portion of the shaft 152 that protrudes outside the housing 1, and a weight 157 is attached to the arm 156. Therefore, the shaft 152 is rotated by the weight 1557 via the arm 1556, and the first rod 154 comes into contact with the first chain 144, and the second rod 1555 Is in contact with the second chain 147, and the moment of rotation of the arm 156 by the weight 157 is balanced with the tension of the first 'second chain 144, 147. Become.

Because of this, if the first and second chains 144 and 147 swing or the housing 1 vibrates due to the impact force during the crushing and mixing and stirring work, etc. The arm 156 swings up and down due to the inertia force of the weight 157, and the lever 153 swings back and forth via the shaft 152, so that the first and second rods 1 The first and second chains 1 4 5 and 1 4 7 are vibrated by 5 4 and 1 5 5.

Therefore, since the first and second chains 1445 and 147 constantly vibrate, the earth and sand are less likely to adhere to the inner surface of the housing 1, and the adhered earth and sand can be separated and dropped.

A handle 1558 is attached to a portion of the shaft 152 protruding from the housing 1 as in the second embodiment of the crushing and mixing device shown in FIG. Alternatively, the operator may hold the handle 158 and rotate the shaft 152 forward and backward to swing the first and second rods 154 and 155 back and forth.

Also, as in the third embodiment of the crushing and mixing device shown in FIG. 19, a sprocket is mounted on a portion of the shaft 152 protruding from the housing 1, and the sprocket is rotated by a motor 160. A chain 16 2 is wound between the shaft 16 1 and the sprocket 15 9, and the shaft 15 2 is rotated forward and reverse by a motor 16 0 so that the first and second rods 15 4 1 5 5 may be swung back and forth.

In addition, the shaft 162 may be directly rotated forward and reverse by the motor 160.

As described above, the soil improvement machine according to the present invention has been described. However, since the earth and sand supply device rotatably supports the earth and sand feeder 14 on the bottom plate 10 constituting the earth and sand hopper 20, the entire structure is improved. Becomes compact and is suitable as a soil and sand supply device for self-propelled soil improvement machines.

In addition, by rotating the earth and sand feeder 14, the earth and sand is pushed by the feeder blade 17 toward the blade 33, and the earth and sand is passed when passing through the sand blade 33. And the height of the sediment moving to the sediment discharge opening 13 is kept constant, so that the amount of sediment falling from the sediment discharge opening 13 per unit time is constant, and the crushing and mixing device When supplying earth and sand, the amount of earth and sand supplied per unit time can be kept constant.

In addition, since the outer wall 16 of the sediment feeder 14 is higher than the feeder blade 17 to form the sediment hopper 20, the inside of the sediment hopper 20 is Of the earth and sand rotates together with the earth and sand feeder 14, so that the rotation resistance due to the earth and sand against the earth and sand feeder 14 is smaller than when the outer rising piece 11 of the bottom plate 10 is raised and the hopper is used. Therefore, the earth and sand feeder 14 can be smoothly rotated.

In addition, the feeder blades 17 are inclined at a predetermined angle to the radial direction and opposite to the rotation direction, so that they are loaded near the center of the sediment feeder 14 When the sediment is moved by rotating the sediment feeder 14, the sediment is pushed outward along the feeder blade 17, so that the amount of sediment is uniform from the inner peripheral side to the outer peripheral side. To

Furthermore, since the earth and sand near the rotation center of the earth and sand feeder 14 is pushed to the outer peripheral side by the external feed blade 35, the earth and sand does not remain near the rotation center.

In addition, when the soil is cut off by the wear blade 33, the soil remaining on the side of the wear blade 33 rises, but the raised earth and sand falls to the outside. Is prevented by

In addition, if the position of the cylinder 122 protruding into the sediment discharge opening 13 of the gate 120 by extending the cylinder 122 changes, the position where the sediment starts to fall will change, and Different types of soil can always be dropped into the center of the opening 5 of the crushing and mixing device A (the center of the pair of crushing and mixing elements 3).

One example of the improving material feeder is to attach the improving material tubing 61 to the upper wall 67 of the improving material feeder 60 and to use the improving material feeder 6 in the improving material tubing 61. Improvement material discharge opening formed in bottom wall 6 5 of 0 Since the improvement material is supplied by dropping from the part 81, the whole device becomes compact and the installation space can be narrowed, making it suitable as an improvement material supply device used for a self-propelled soil improvement machine.

In addition, by rotating the tillage body 71 of the improvement material feeder 60, the improvement material is moved by the feeder blade 75 and falls from the improvement material discharge opening 81 to fall on the soil and sand supply device. Therefore, if the size of the improving material discharge opening 81 is fixed and the cultivation speed of the rotating body 71 is constant, the improving material such as cement or lime can be supplied for a unit time. It can be supplied at a fixed rate.

Also, since the size of the opening 94 extends from the improvement material discharge opening 81 to the opposite side of the improvement material discharge opening 81, the opening 94 is large, and the improvement material hopper 6 1 The storage capacity of the improved material increases as the planar shape of the steel increases. In addition, the cover member 95 prevents the improved material from directly falling into the improved material discharge opening 81 in the improved material hopper 61, so that the amount of the improved material dropped and supplied can be kept constant. it can. -In addition, since the height of the improved material hopper 61 is adjustable, it can be increased when supplying the improved material to increase the storage capacity of the improved material, and can be lowered during transportation etc. to reduce the overall height. It is most suitable as an improved material supply device used for a soil improvement machine of the type.

In addition, since the upper part of the improvement material hopper 61 is openable and closable, it can be opened when the improvement material is supplied, and can be prevented from scattering around when supplying the improvement material.

Another example of the improvement material supply device is to provide an improvement material feeder 1209 in the improvement material hopper 120 and raise the bottom plate 133 by a spring 1334. Since the improved material is dropped from the improved material discharge opening 125 while being raised and supplied to the sediment supply device, the size of the improved material discharge opening 125 is fixed, and the improved material feeder 125 is used. If the cultivation speed of No. 9 is kept constant, the improvement material can be supplied at a constant rate per unit time.

Moreover, since the improved material discharge opening 125 is located in the middle of the improved material hopper 120 in the vertical direction, the height of the hopper projecting upward from the improved material discharge opening 125 is reduced. Therefore, the height of the portion protruding upward from the earth and sand supply device is reduced, so that the entire soil improvement machine is reduced in size. Therefore, it is suitable as an improvement material supply device for a self-propelled soil improvement machine.

Further, according to the crushing and mixing device, the earth and sand scattered during the mixing and stirring does not scatter to the inner surface of the housing 1 by hitting the plurality of first chains 145 and the plurality of second chains 147. It is possible to prevent earth and sand from adhering to the inner surface of the housing 1.

In addition, the soil attached to the first and second chains 144, 147 can be separated and dropped.

Further, since the arm 156 vibrates due to the vibration of the housing 1 and the first and second chains 145, 147 are vibrated by the rod, the first and second chains 145, 147 are vibrated without using a special power source. The sediment attached to the two chains 144, 147 can be separated and dropped.

The first and second tunes are moved by moving the rod by manual operation.

Separation of the earth and sand adhering to 145 and 147 can be performed by dropping.

In addition, by forcibly moving the rod by the motor, the earth and sand adhering to the first and second chains 144 and 147 are separated and dropped. be able to.

Although the present invention has been described with reference to exemplary embodiments, various modifications, omissions, and additions can be made to the disclosed embodiments without departing from the spirit and scope of the present invention. Is obvious to those skilled in the art. Therefore, the present invention should not be limited to the above embodiments, but should be understood to include the scope defined by the elements recited in the claims and their equivalents.

Claims

The scope of the claims

1. A crushing / mixing device including a housing having an opening at an upper portion thereof, and a plurality of rotary crushing / mixing elements for crushing and mixing and mixing the earth and sand and the improving material introduced from the opening,

A sediment discharge opening having a predetermined size, which is provided at an upper portion of the crushing and mixing device and communicates with the opening, and a rotary sediment feeder that supplies a predetermined amount of sediment to the sediment discharge opening. Earth and sand supply device equipped with

An improved material discharge opening having a predetermined size, which is provided at an upper portion of the sediment supply device and communicates with the sediment supply device at an upstream side of the sediment discharge opening; A soil improvement machine including a surface-improving material feeder for supplying an improving material for each material and an improving material supplying device having an improving material hobba.

2. A bottom plate having an outer rising piece on an outer peripheral edge and having a sediment discharge opening between an inner wall and an outer wall;

It has an inner wall, an outer wall, and a plurality of feeder blades connected between the two walls, and a sediment feeder rotatably supported by the bottom plate, and rotationally drives the sediment feeder. A drive mechanism,

A sliding blade which is located closer to the direction opposite to the earth and sand feeder rotation direction than the earth and sand discharge opening and faces the upper end surface of the feeder blade;

And a plate provided above the sediment discharge opening, and one of the outer rising pieces or the outer wall, which is higher than the feeder blade, and the bottom plate constitute the sediment hopper. The soil improvement machine according to claim 1, further comprising a soil and sand supply device.

3. The earth and sand supply device, wherein the feeder blade is inclined at a predetermined angle with respect to a radiation direction such that an outer portion is located in a direction opposite to a rotation direction of the earth and sand feeder than an inner portion. Item 2. The soil improvement machine according to item 2.

4. The earth and sand supply device, wherein the earth and sand feeder includes an outer feed blade facing the upper surface thereof from around the rotation center of the earth and sand feeder to the vicinity of the inner wall, and the outer feed blade is arranged in a radial direction. 4. The soil improvement machine according to claim 2, wherein the inner portion is inclined at a predetermined angle so as to be located on a side opposite to the earth and sand discharge opening with respect to the rotation center of the earth and sand feeder.

5. The soil improvement machine according to claim 2, wherein a spill prevention plate is attached to an outer side of the wear blade in the earth and sand supply device.

6. The soil improvement machine according to claim 2, wherein a gate facing the earth and sand discharge opening is provided in the earth and sand supply device, and the gate can be moved forward and backward with respect to the earth and sand discharge opening.

7. A hollow main body composed of a bottom wall having an improving material discharge opening, an outer peripheral wall, and an upper wall having an opening, and a rotatable body provided in the main body, An improved material feeder comprising: a rotating body having the above-described feeder blade; and a drive mechanism for driving the rotating body. An improvement hob attached to the periphery of the opening in the upper wall of the body;

The soil improvement machine according to claim 1, further comprising: an improvement material supply device including: a cover member positioned above the discharge opening inside a lower portion of the improvement material hobber.

8. The improved material supply device, wherein the lower end surface of the cover member is located from a position separated from the rotating body to a position near an outer peripheral wall on a lower surface of an upper wall of the main body, and is located on an upper end surface of the feeder blade. The soil improvement machine according to claim 7, wherein the machine includes opposing cutting blades.

9. The soil improvement machine according to claim 7, wherein in the improvement material supply device, the height of the improvement material cradle is adjustable.

10. The soil improving machine according to any one of claims 7 to 9, wherein in the improving material supply device, an upper portion of the improving material hob is openable and closable.

11. An improved material hobber comprising a cylindrical lower portion having a concave portion from the middle in the vertical direction to a lower portion of the peripheral wall, and a cylindrical upper portion provided with an improved material discharge opening in the bottom wall opposed to the concave portion.

An improved material feeder rotatably provided in an upper portion of the hub and having a plurality of feeder blades; and a drive mechanism for driving the rotator to rotate.

It is provided to be able to move up and down in the lower part of the hobber, The soil improvement machine according to claim 1, further comprising: an improvement material supply device including: a bottom plate urged upward by a spring having an elasticity enough to descend by weight.

12. A plurality of first chains suspended at an interval facing an inner surface of the housing to which soil is attached,

A plurality of second tunes each suspended between an inner surface of the housing 1 to which earth and sand adhere and each of the first chains, wherein a direction of a ring constituting the first chain and the second chain are The soil improvement machine according to claim 1, further comprising a crushing / mixing device including a soil / sand adhesion prevention device having a ring formed at an angle of 90 degrees.

13. The soil improvement machine according to claim 12, wherein the earth and sand adhesion preventing device includes a vibration mechanism that vibrates the first chain and the second chain from outside.

14. The vibration mechanism comprises: a shaft pivotally attached to the housing; a lever fixed to the shaft in the housing; and a lever attached to the lever, wherein the first chain and the second chain are attached to the lever. An arm fixed to the shaft outside the housing, and a weight attached to the arm. The arm swings due to the vibration of the housing, and the lever swings. The soil improvement machine according to claim 13, wherein:

15. The vibration mechanism comprises: a shaft pivotally attached to the housing; A lever fixed to the shaft inside the housing, a rod attached to the lever and in contact with the first chain and the second chain, and a handle fixed to the shaft outside the housing; 14. The soil improvement machine according to claim 13, wherein the handle is swung to swing the lever.

16. The vibration mechanism comprises: a shaft pivotally attached to the housing; a lever fixed to the shaft within the housing; and a lever attached to the lever, wherein the first chain and the second 14. The soil improvement machine according to claim 13, further comprising: a rod that contacts the chain; and a motor that drives the shaft, wherein the motor rotates the shaft forward and reverse. 15.