KR100407875B1 - Soil improvement machine - Google Patents

Abstract

A crushing / mixing device (A) having a housing (1) having an opening (5) at an upper portion thereof, and a rotary multiple shredding mixer (3) for crushing and mixing and mixing the soil and the modifier introduced from the opening,

A dust and dirt feeder 14 installed on the crushing and mixing apparatus and communicating with the opening and having a predetermined size, a rotary tiller feeder 14 for supplying a gravel-like amount to the gravel-discharge opening, An earth and sand supplying device B,

A modifying material discharge opening (81) provided in the upper part of the gravel-supplying device and communicating with the gravel-supplying device at an upstream side of the gravel-discharging opening, and a modifying material supplying device And a modifying material feeder provided with a modifying material hopper (61).

Description

Soil improvement machine

Soils generated by excavation contain a large amount of moisture, and may be poor soil mixed with gravel, rock fragments, and concrete fragments. As a result, the soil may not be used as a reclaimed material. Therefore, various soil improvement machines have been proposed for improving the soil of poor soil to the soil of good soil.

For example, as disclosed in Japanese Utility Model Publication No. 62-39827, soil sand is supplied to a crushing / mixing device and a modifying material is supplied to a crushing / mixing device, Are mixed and stirred to improve the soil with good soil quality.

Since the soil supply device of the soil improvement machine is composed of the hopper, the soil quantification device, and the belt conveyor, the entire apparatus becomes large and the installation space becomes very large. As a result, the soil improvement machine becomes large, (Self-propelled) is a major obstacle.

In addition, the modifying material supply device of the soil remedying machine is constituted by a hopper and an improved metered quantity supply device. Since the modified metered quantity supply device is installed at the outlet of the lower portion of the hopper and becomes longer, And as a result, the soil improvement machine becomes larger, so that it becomes a big obstacle when the soil improvement machine is made self-propelled.

In addition, in the above-mentioned geo-sand supplying device, the gravel in the hopper is dropped on the belt conveyor in the gravel-to-sand quantitative feeder, and the gravel is put into the crushing / mixing device by the belt conveyor. So that the amount of the soil can not be accurately inputted into the crushing mixer per unit time, so that the amount of the soil can be changed.

Therefore, even if the amount of the modifying material to be supplied to the crushing-mixing apparatus is a fixed amount per unit time, the soil material of the improved gravel may not become the predetermined soil quality if the amount of the gravel to be supplied to the crushing-

On the other hand, in the modifying material supply device, the modifying material in the hopper is transported to the crushing / mixing device by the modifying quantity supply device, so that the modifying material such as cement or lime can escape into the atmosphere during transportation, And the amount of modifying material per unit time can not be accurately injected into the crushing mixer, so that the amount of modifying material can be varied.

As described above, when the amount of the modifying material per unit time inputted to the crushing mixer is changed, the soil of the improved gravel does not become the predetermined soil.

It is therefore an object of the present invention to provide a soil supply device which can be downsized so as to be suited to the self-propelled type, and which improves the soil quality of the improved soil.

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a soil improvement machine for agitating and mixing soil and soil improvement materials generated by excavation with a crushing and mixing device and regenerating the soil with good soil quality, And an apparatus for crushing and mixing soil and modifying materials.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a whole front view showing an embodiment of a soil supply device according to the present invention; Fig.

Figure 2 is an overall plan view of the embodiment of Figure 1;

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

4 is a plan view of the first embodiment of the soil supply device.

5 is a cross-sectional view taken along line V-V of Fig.

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

7 is a plan view of the first embodiment of the modifier feeder.

8 is a longitudinal sectional view of the first embodiment of the modifying material supply device.

9 is a left side view of the first embodiment of the modifying material supply device.

10 is a cross-sectional view of the vicinity of the discharge opening of the second embodiment of the soil supply device.

11 is a cross-sectional view taken along the line XI-XI in Fig.

12 is a longitudinal sectional view showing another example of the feeder blade of the soil material supply device.

13 is a longitudinal sectional view showing a second embodiment of the modifying material supply device.

14 is a sectional view taken along the line XIV-XIV in Fig.

15 is a sectional view taken along the line XV-XV in Fig.

Fig. 16 is a partially broken front view showing a first embodiment of a modifying material and a crushing / mixing equipment of gypsum; Fig.

Fig. 17 is a partially broken side view of the first embodiment of the crushing mixer; Fig.

18 is a partial front elevational view showing a second embodiment of a modifying material and a crushing / mixing equipment of gypsum;

Fig. 19 is a partially broken front view showing a third embodiment of the modifying material and the crushing and mixing equipment of gypsum; Fig.

In order to achieve the above object, an aspect of the soil improvement machine according to the present invention is characterized in that,

A crushing / mixing device having a rotary multi-crushing mixer (mixer) for crushing and mixing the soil and the modifier introduced from the opening,

A dust and dirt feeder provided on the top of the crushing and mixing device and having a predetermined size communicating with the opening; a rotary type soil feeder for supplying the soil to the soil discharge opening by a predetermined amount; ,

A modifying material discharge opening provided in an upper part of the gravel-like material supplying device and having a predetermined size communicating with the gravel-supplying device at an upstream side of the gravel-discharging opening; A rotary type modifying material feeder, and a modifying material feeding device having an modifying material hopper.

In the above configuration,

A bottom plate having an outer upright member at an outer peripheral edge portion and having a soil release opening portion in the vicinity of the outer peripheral edge portion,

A soilfeeder having an inner wall, an outer wall, a plurality of feeder blades connected between the two walls, and rotatably supported by the bottom plate;

A driving mechanism for rotationally driving the sand and soil feeder,

A rake blade located nearer the direction opposite to the direction of rotation of the soil material feeder than the gravel discharge opening and facing the upper surface of the feeder blade;

And a plate provided above the soil discharge opening,

And a soil supply device constituting the gravel-like hopper by one of the outer upright member and the outer wall and the bottom plate which is higher than the feeder blade.

According to the above configuration,

Since the gravel-like material supplying device rotatably supports the gravel-like material feeder on the bottom plate constituting the gravel-hopper, the whole gravel-like material becomes compact and is suitable as a gravel-supplying device used in a self-propelled soil improvement machine.

In addition, by rotating the sand paper feeder, the soil is pressed by the feeder blade toward the rake blade, and when the paper passes through the rake blade, the soil is raked so that the height of the gravel moving to the gravel- The amount of the slurry falling on the slurry discharge opening per unit time is constant and the slurry supply amount per unit time can be made constant when the slurry is supplied to the crushing mixer.

Preferably, in the above-mentioned sandwiching device, the feeder blade is inclined at a predetermined angle so that the outer side of the feeder blade is located in a direction opposite to the rotation direction of the sandwiching feeder, as compared with the inner side.

According to this construction, since the feeder blade is inclined in the direction opposite to the rotating direction of the predetermined angle with respect to the radial direction, when the soil material placed near the center of the soil material feeder is moved and rotated by rotating the soil material feeder, So that the amount of the soil is uniform from the inner peripheral side to the outer peripheral side.

The soil supply device may further include an outwardly directed transfer blade having an upper surface facing the vicinity of the inner wall in the vicinity of the center of rotation of the gypsum feeder so that the inner portion of the outwardly- It is preferable to make a predetermined angle slope so as to be positioned on the side opposite to the above-mentioned gravel-discharging opening.

According to this construction, the soil near the center of rotation of the sand paper feeder is pressed toward the outer peripheral side by the outwardly directed transfer blade, so that the soil can not remain near the center of rotation.

Further, in the above-mentioned gravel-like material supplying device, it is preferable to mount an overflow preventing plate on the outside of the rake blade portion.

It is preferable that in the above-mentioned gravel-like material supply device, a gate facing the gravel-discharge opening is provided, and the gate is allowed to move forward and backward with respect to the gravel-discharge opening.

According to this configuration, when the projecting position of the gravel in the gravel-discharge opening is changed, the dropping start position of the gravel-slope changes, so that the gravel-differentiated gravel is always dropped to the center of the opening of the crushing- .

Further, in the above-described configuration, it is preferable that a hollow main body constituted by a bottom wall having a modifying material discharge opening, a peripheral wall, and an upper wall having an opening, and a plurality of feeder blades And a driving mechanism for driving the rotating body,

A modifying material hopper provided at a peripheral edge portion of an upper wall opening of the main body,

And a covering member located on the inner lower side of the modifying material hopper and located above the discharging opening.

According to this configuration,

The modifying material feeder is provided with an modifying material hopper on the upper wall of the modifying material feeder and the modifying material in the modifying material hopper is dropped from the modifying material discharging opening formed on the bottom wall of the modifying material feeder to supply the modifying material , The entire apparatus can be made compact, the installation space can be narrowed, and it is suitable as a modifying material feeding apparatus for use in a self-propelled soil conditioner.

Further, by rotating the rotating body of the modifying material feeder, the modifying material is moved by the feeder blade, falls from the modifying material discharging opening, and is supplied onto the soil material supplying device. Thus, the size of the modifying material discharging opening and the rotating speed of the rotating body are constant , The powder chain modifying material such as cement or lime can be supplied at a predetermined amount per unit time.

And a rake blade opposed to an upper end surface of the feeder blade, the rake blade being disposed on a lower end surface of the covering member from a position deviated from the rotating body and in the vicinity of the outer peripheral wall of a lower surface of the upper wall of the main body .

In the modifying material supply device, it is preferable that the height of the modifying material hopper is adjustable.

In the modifying material supply device, it is preferable that the upper portion of the modifying material hopper can be opened and closed.

Further, in the above configuration,

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

A reforming material hopper constituted by a cylindrical upper portion provided with a modifying material discharge opening on a bottom wall facing the concave portion,

A reformer feeder rotatably installed in an upper portion of the hopper, the feeder having a rotating body having a plurality of feeder blades, and a driving mechanism for rotationally driving the rotating body;

And a bottom plate which is vertically movably provided in the lower portion of the hopper and is pressed upward by a spring having an urging force to descend by the weight of the modifying material.

Since the modifying material feeder is provided with the modifying material feeder in the modifying material hopper and the modifying material is dropped from the modifying material discharging opening while the bottom plate is raised by the spring and supplied to the soil material supplying device, If the rotation speed of the re-feeder is made constant, the modifying material can be supplied by a predetermined amount per unit time.

Further, since the modifying material discharging opening portion exists in the upper-lower direction middle of the modifying material hopper, the height of the hopper portion protruding upward from the modifying material discharging opening portion is lowered and accordingly the height of the portion protruding upward from the soil- It is suitable as a modifying material feeding device for use in a self-leveling soil improvement machine.

Further, in the above configuration,

A plurality of first chains suspended from the inner surface of the housing,

A plurality of second chains each suspended between an inner surface to which the gravel of the housing is attached and each of the first chains,

And a crushing / mixing device including an earth / sand attachment preventing device in which the direction of the ring constituting the first chain and the direction of the ring constituting the second chain form 90 degrees.

According to the above crushing and mixing apparatus, the gravel scattering at the time of mixing and stirring does not scatter to the inner surface of the housing in contact with the plurality of first chains and the plurality of second chains, so that adherence of the gravel to the inner surface of the housing can be prevented.

In the above-mentioned gravel-preventing device, it is preferable to mount a vibration mechanism for externally vibrating the first chain and the second chain.

As the vibration mechanism,

A lever attached to the lever and in contact with the first chain and the second chain; an arm attached to the shaft outside the housing; And a weight attached to the arm, the arm swinging due to the vibration of the housing to pivot the lever,

A lever attached to the lever and in contact with the first chain and the second chain; and a rod fixedly attached to the shaft outside the housing, wherein the shaft is pivotally connected to the housing, The handle including a handle for swinging the lever to pivot,

A lever pivotally connected 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 for driving the shaft, So that the shaft is rotated forwardly and reversely.

The invention will be better understood by the following detailed description and the accompanying drawings which illustrate embodiments of the invention. Furthermore, the embodiments shown in the accompanying drawings are not intended to specify the invention, but merely facilitate explanation and understanding.

As shown in Figs. 1, 2 and 3, the soil-water supplying device B is provided on the upper part of the crushing / mixing device A, the modifying material supplying device C is provided on the soil- So that a soil improvement machine is constituted.

The crushing and mixing apparatus A is installed in a vehicle body of a traveling vehicle, the soil-water supplying apparatus B is supported by a vehicle body, and the modifying material supplying apparatus C is supported by the vehicle body and the crushing- .

The crushing and mixing apparatus A has a plurality of shafts 2 rotatably installed in a housing 1 and a plurality of shredding mixers 3 radially arranged on each of the shafts 2, When the soil and the modifying material are introduced from the opening 5 formed in the upper wall 4 of the upper wall 4 of the upper wall 4, the gravel is finely pulverized and the gravel and the modifying material are mixed and stirred to be discharged from the lower portion of the housing .

First, as shown in Figs. 4 and 5, the first embodiment of the gravel-like material supplying device B is provided with a bottom plate 10. The bottom plate 10 has a circular planar shape, and the outer upright member 11 is provided in a ring shape along the outer periphery and the inner upright member 12 is provided in a ring shape on the inner side. The bottom plate 10 is formed so that the soil discharge openings 13 are opposed to the openings 5 of the crushing and mixing apparatus A. [

The bottom plate 10 is provided with a rotatable gravel feeder 14 rotatably. The gravel-like material feeder 14 has a ring-shaped inner wall 15 and a ring-shaped outer wall 16. A plurality of feeder blades 17 are arranged between the two walls 15, It is installed radially. Concretely, the outer side portion 17a of the plurality of feeder blades 17 is positioned between the two walls 15, 16 in the radial direction of the rotation center 14a of the sandy feeder 14, (2) so as to be positioned opposite to the rotation direction of the rotary shaft (14). A feeder chamber (b) having the same volume as the pair of feeder blades (17) adjacent to the inner wall (15) and the outer wall (16) is formed. 5, an upper plate 18 is attached to the inner wall 15, and the upper plate 18 is rotatably installed on the bottom plate 10 by a support mechanism 19. The outer wall 16 is higher than the inner wall 15 and protrudes upward and constitutes the loam hopper 20 by the outer wall 16, the bottom wall 10 and the inner upright member 12.

The driving mechanism 19 for supporting both ends of the outer ring-shaped body 22 includes an outer ring-shaped body 22 provided with a bolt 21 on the bottom plate 10, A ring shaped toothed portion 24 provided on the inner peripheral surface of the inner ring shaped body 23; a drive motor 25 provided on the lower surface of the bottom plate 10; And a pinion 26 which is rotationally driven by the drive motor 25 and engaged with the ring-shaped toothed portion 24. By driving the drive motor 25, the sandwich feeder 14 is rotated in one direction }. 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 gypsum feeder 14, the lower end surface of the outer wall 16, and the lower end surface of the feeder blade 17.

A reinforcing member 27 is connected between the adjacent feeder blades 17. The reinforcing member 27 also serves to prevent large stones and the like from being injected into the crushing and mixing apparatus A in addition to reinforcement of the feeder blades.

An inner support post 28 is provided at the center of the bottom plate 10 (the rotation center of the sandwich feeder 14). The inner supporting column 28 passes through a hole 29 formed in the center of rotation of the upper plate 18 of the sand and soil footer 14 and a cylindrical body 30 fixed to the peripheral edge of the hole 29. The inner support pillar 28 protrudes slightly upward from the upper end of the outer wall 16 of the sand protection feeder 14 and extends from the inner support pillar 28 to an outer support vertical member 31, a plate 32 is provided in parallel with the bottom plate 10.

The plate 32 has an end surface 32a formed in an arc shape near the gravel discharge opening 13 and an opening window 32b formed near the center of rotation of the gravel feeder 14, (32b) is opposed to the upper plate (18) of the sand protection feeder (14).

A rake blade 33 is provided in the vicinity of the outer side of the plate 32 via a bracket 34 and an outwardly directed conveying blade 35 is provided near the center of the plate 32 to receive a bracket 36 .

The rake blade 33 has a longitudinal cross-sectional shape that is curved in an arc shape in the transverse direction and is located between the inner wall 15 and the outer wall 16 of the sandwich feeder 14. The lower end face 33b of the rake blade 33 faces the upper end face 17c of the feeder blade 17 with a slight gap and the upper end face 33c protrudes upward from the plate 32. [ The rake blade 33 is inclined radially to the vicinity of the direction opposite to the rotation direction of the sandwiching feeder 14,

Specifically, it has a posture inclined by a predetermined angle alpha such that it is located in a direction opposite to the feeder rotation direction with respect to the radial direction toward the rotation center 14a of the sandwich feeder 14, as compared with the outer side portion 33d and the inner side portion 33e have.

The rake blade 33 has a planar shape bent in a <shape, and its bent portion 33f is located in the vicinity of the inner wall 15.

The outer side portion 35a of the outwardly directed transfer blade 35 protrudes to the vicinity of the outer wall 16 slightly more than the inner wall 15 of the gypsum feeder 14 and the inner portion 35b protrudes from the center of rotation 14a ). The lower surface 35c of the outwardly extending transfer blade 35 is opposed to the upper plate 17 with a slight gap therebetween and the upper surface 35d protrudes upward from the plate 32. [ The outwardly directed transfer blade 35 is inclined radially.

Concretely, the inner side portion 35b is shifted from the feeder rotation center 14a to the opposite side to the soil-discharge opening portion 13 with respect to the radial direction toward the rotation center 14a of the soil- ) Has a sloping posture.

Further, the rake blade 33 and the outward transfer blade 35 are integrally formed. That is, both the blades 33 and 35 have a shape in which the plate member having a substantially vertical C-shaped vertical section is bent in a &quot; shape &quot;, and the bent portion C is formed in the vicinity of the outer wall 16 .

The peripheral edge portion of the bottom plate 10 and the portion of the upright member 11 approaching the earth discharge opening portion 13 are straight and the L-shaped bracket 37 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 as shown in Fig. .

A vertical plate 39 is provided at a position on the opposite side of the rake blade 33 of the plate 32, that is, at a position near the rotation direction of the sandwiching feeder 14 in the soil discharge opening 13, So as not to fall directly from the soil discharge opening portion 13.

It is also possible to form the modified dropping port on the plate 32 by covering the soil discharge opening 13 with the plate 32. [

Next, the operation of putting the gravel into the housing 1 of the crushing and mixing apparatus A according to the first embodiment of the gravel-like material supplying apparatus B will be described.

First, the soil 20 excavated by a bucket of an excavator or the like is loaded in the hopper 20. At this time, since the gravel-like material is loaded on the rotation center 14a (upper plate 18) of the gravel-like material feeder 14 so that the gravel-like material does not overflow from the hopper 20, the gravel- , The soil can not fall directly from the charging opening 13 due to the plate 32.

The driving motor 25 is driven to rotate the sandwiching feeder 14 in the direction of arrow a to move the sanding soil toward the sandwiching discharge opening 13 by the feeder blade 17. [ At this time, since the feeder blade 17 is inclined at a predetermined angle? With respect to the radial direction, the gravel is pressed by the feeder blade 17 from the feeder rotation center 14a toward the outer wall 16 , And the soil is uniformly filled in each feeder chamber (b) between the inner wall (15) and the adjacent feeder blade (17) on the outer wall (16).

Further, since the soil gravel moving to the feeder blade 17 is raked when passing through the raking blades 33, the above-mentioned soil erosion height in the feeder chamber b is lower than the lower end surface 33b of the raking blades 33, The amount of the soil in the feeder chamber b passing through the raking blades 33 becomes a certain amount and the amount of the gravel falling from the loading opening 13 drops to the height of the crushing mixer A And is introduced into the housing 1 through the opening 5.

Thus, the amount of the slurry put into the housing 1 of the crushing and mixing apparatus A per unit time is always constant, and the amount of slurry deposited per unit time can be arbitrarily adjusted by changing the rotation speed of the slurry feeder 14.

Also, when the gravel moving to the feeder blade 17 is raked by the rake blade 33, the gravel left on the rake blade 33 tends to overflow from the outer wall 16 to fall down. However, Since the king blade 33 is inclined at a predetermined angle alpha with respect to the radial direction, the overgrown soil moves along the rake blade 33 toward the earth / soil feeder rotation center 14a, And falls off.

The overflow preventing plate 40 is located at a position facing the rake blade 33 on the outer wall 16 of the soil puder 14. [ The overflow preventing plate 40 is fixed to the supporting vertical member 42 provided on the bottom plate 10 and the outer standing member 11 via a plurality of brackets 41. The overflow preventing plate 40, the soil accumulated on the rake blade 33 is prevented from falling over the outer wall 16.

The gravel of the center portion is pressed by the outwardly directed transporting blade 35 and the outwardly directed transporting blade 35 is inclined by a predetermined angle r with respect to the radial direction by the rotation of the sand paper feeder 14, The gravel is moved outwardly along the outwardly-moving blade 35 and is also fed into the feeder chamber b along the rake blade 33, so that no gravel is left at the center.

In addition, when the soil is loaded on the hopper 20, the soil on the plate 32 falls from the opening window 32b onto the top plate 18 of the soil / soil feeder 14, Do not.

Next, as shown in Figs. 1, 2 and 3, the first embodiment of the modifier feeder C is constituted of a rotary feeder 60 and a modifying material hopper 61 capable of adjusting the height . The rotary feeder 60 is installed by a bracket 62 provided on the upper part of the housing 1 of the crushing and mixing apparatus A and a support column 63 provided on the vehicle body, and a part of the rotary feeder 60 Is superimposed on a part of the gravel-like material supplying device (B) to drop the modifying material onto a part of the gravel-like material supplying device (B). An upgrading hopper 61 is installed on the rotary feeder 60.

[Structure of Rotary Feeder 60]

As shown in Figs. 7, 8 and 9, the rotary feeder 60 is provided with a main body 64 whose planar shape is a circular hollow shape. The main body 64 has a cylindrical outer wall 66 fixed to the outer peripheral edge portion of the disk-like bottom wall 65 and a disk-shaped upper wall 67 is fastened to the outer wall 66 with bolts 68. [ And an inner peripheral wall 69 of a cylindrical shape is fixed to the bottom wall 65 concentrically with the outer peripheral wall 66 to have a hollow shape and an annular recess 70 in the vicinity of the outer periphery thereof .

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 in a radial connection between an inner peripheral wall 73 having an upper plate 72 and an outer peripheral wall 74 and fixed to the upper plate 72 The movable ring body 76 is rotatably supported by the fixed ring body 77 fixed to the bottom wall 65 and the inner peripheral wall 73, the outer peripheral wall 74 and the plurality of feeder blades 75 are supported by the body 64, The annular concave portion 70 is formed in the shape of a circle. A pinion 79 rotated by a drive motor 78 provided on the bottom plate 65 is engaged with a ring-shaped internal tooth portion 80 formed on the inner peripheral surface of the movable ring member 76.

A modifying material discharge opening 81 is formed in a part of a portion of the bottom wall 65 opposite to the annular recess 70. The modifying material discharging opening 81 is located at the upper portion of the gravel-supplying device B and the modifying material is dropped from the modifying material discharging opening 81 by rotating the rotating body 71, ).

[Structure of modifying material hopper 61]

The modifying material hopper 61 is composed of a lower cylindrical body 92 and an upper cylindrical body 93. The lower cylindrical body 92 is fixed around the circular opening 94 formed in the upper wall 67. The opening 94 is formed eccentrically to the vicinity of the center of the upper wall 67 and opposite to the modifying material discharging opening 81 and the size of the opening 94 is open to a part of the modifying material discharging opening 81 Diameter. Further, the lower transverse sectional area (lower cylindrical body 92) of the modifying material hopper 61 becomes larger, thereby increasing the volume of the modifying material hopper 61. [

A covering member 95 is provided on a lower inner circumferential surface of the lower cylindrical body 92 near the discharge port 81. The lower end surface 95a of the covering member 95 is positioned above the vicinity of the modifying material discharge opening 81 through the upper plate 72 of the rotating body 71, The modifying material in the sieve 92 drops onto the top plate 72 along the covering member 95 but does not fall directly through the outlet 81. [

That is, since the circular opening 94 is made to have a large diameter in order to make the lower cylindrical body 92 large in diameter, if there is no cover member 95, the modifying material in the lower cylindrical body 92 is inserted into the modifying material discharging opening 81 The supply amount of the modifying material can not be made a certain amount.

7 and 8, a portion of the lower end surface 95a of the cover member 95, which is separated from the rotating body 71, is attached to the upper end surface of the feeder blade 75, And the extended portion of the rake blade 95b is fixed to the lower surface of the upper wall 67 of the main body 64. The rake blade 95b is fixed to the lower surface of the upper wall 67 of the main body 64. [

A cutter 96 is provided under the inner circumferential surface of the lower cylindrical body 92. The cutter 96 is formed by four cutting edges 97 in a cross shape so that the central portion thereof is upwardly pointed, (98).

The upper cylindrical body 93 is formed in a bellows shape by a flexible material so that the height of the upper cylindrical body 93 is adjustable and the lower portion of the upper cylindrical body 93 is fixed to the upper side of the lower cylindrical body 92 by a fastening band 99 And the upper portion of the upper cylindrical body 93 can be connected by a tying cord or the like so that the body 64 of the modifying material feeder 60 and the modifying material hopper 61 are hermetically sealed.

The lower cylindrical member 92 is provided with a cylindrical main body 101 through a bracket 100. The lower portion of the support column 102 is slidably inserted into the cylindrical main body 101, The support column 102 can be fixed by inserting the pin 104 into the lower portion of the support column 102 in the hole 103 so that the support column 102 can expand and contract in the vertical direction. Thus, the upper portion of the support column 102 is adapted to support the upper portion of the upper cylindrical body 93 via the cable 105. [

Next, the supplying operation of the modifying material according to the first embodiment of the modifying material supplying device (C) will be described.

First, the upper part of the upper cylindrical body 93 is opened and the bag 110 filled with the modifying material is hung up with a crane or the like to carry it into the modified hopper 61, 110 are cut by the cutting edge 97 of the cutter 96 to feed the modifying material into the modifying material hopper 61 and then the bag 110 is taken out to bundle the upper part of the upper cylindrical body 93 do.

As a result, the modifying material in the modifying material hopper 61 drops into the main body 64 of the modifying material feeder 60, but does not fall directly into the modifying material discharging opening 81 by the covering member 95.

When the driving motor 78 is driven to rotate the rotating body 71 in the above-described state, the modifying material is moved by the feeder blade 75 and is raked by the rake blade 95b to be a constant amount, The supply amount of the modifying material per unit time is set to be the same as the rotating speed of the rotating body 71 when the size of the modifying material discharging opening 81 is made constant Lt; / RTI &gt;

Next, the positional relationship between the soil material supplying device B and the modifying material supplying device C will be described.

As shown in Fig. 2, the edge portion of the plate 32 of the sandwiching device B having the arc-shaped one end face 32a is located on the lower surface of the outer peripheral edge portion of the bottom wall 65 of the modifying material feeder 60 The modifying material discharging opening 81 of the modifying material feeder 60 is opened on the feeder chamber b and the modifying material discharging opening 81 is connected to the rake blade 33 And is sandwiched between the soil discharge openings 13.

Thus, since the modifying material is supplied dropwise to the soil material having a predetermined amount by the rake blade 33, the ratio of the amount of the material to be supplied to the crushing mixer A to the amount of the modifying material becomes a set value, Soil soil can be improved.

Next, a second embodiment of the soil supply device B will be described.

10 and 11, in the bottom plate 10, the gate 120 is positioned at a position opposite to the rotation direction with respect to the soil discharge opening 13 along the guide 121, And a cylinder 122 is connected between the gate 120 and the bottom plate 10 to move the gate 120 by the cylinder 122. [

If the cylinder 122 is extended to change the position of the gate 120 protruding into the gravel discharge opening 13, the dropping start position of the gravel 120 is changed. Therefore, A to the central portion of the opening 5 (central portion of the pair of shredding mixers 3).

For example, in the case of a slurry which is low in viscosity and easy to drop, such as sandy soil, the gate 120 is projected into the slurry discharge opening 13 as shown by a virtual line in FIG. 11, The gate 120 can be moved along the vertical line 120 to fall from the edge of the end portion of the gate 120 and fall to the center portion. In the case of the gravel having a large viscosity, It can be retracted to a position spaced apart from the soil discharge opening 13 as shown to allow the soil to fall from the inner edge of the earth discharge outlet 13 and fall to the center.

Further, when the upper end surface of the feeder blade 17 is horizontal as in the above-described embodiment, the amount of the soil supply at the outer circumferential side increases due to the difference in peripheral speed between the inner circumferential side and the outer circumferential side. However, 17 can be prevented from increasing in the amount of the soil supply on the outer peripheral side when the upper end surface 17c of the upper and lower surfaces 17, 17 is inclined with respect to the horizontal so that the inner peripheral side is high and the outer peripheral side is low.

In this case, as shown in Fig. 12, the heights hi and hi of the outer peripheral side and the inner peripheral side of the feeder blade 17 are set to be ho and hi, respectively, and the portions where the outer wall 16 and the inner wall 15 of the sandwich feeder 14 are located It is preferable to set ho / hi = di / do as the diameters of do and di, respectively.

Next, a second embodiment of the modifying material supply device will be described.

As shown in Figs. 13, 14, and 15, the modifying material hopper 120 has a cylindrical upper portion 121 having a circular planar shape and a planar shape having a concave portion 122 at a portion of the peripheral wall. A modified material discharging opening 125 is formed in the upper wall of the concave portion 122, that is, the bottom wall 124 of the cylindrical upper portion 121, And a discharge guide plate 126 is provided below the re-discharge opening 125.

A modifying material feeder 129 having a feeder blade 128 radially provided in the rotating body 127 is rotatably installed in the circular upper portion 121 of the modifying material hopper 120 so that the rotating body 127 The fixed vertical shaft 130 is connected to a driving motor 132 protruded downward from the bottom wall 131. [

A bottom plate 133 is provided in the lower portion 123 of the modification reboiler 120 so as to be movable up and down along the longitudinal axis 130. The bottom plate 133 is pressed by pressing means such as a spring 134 ) Pushing it upwards by a force that can not resist the downward movement by its weight and the weight of the modifying material.

Further, a lid 135 is detachably installed on the upper portion of the modifying material hopper 120.

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

First, when the lid 135 is opened to insert the modifying material into the modifying material hopper 120, since the bottom plate 133 is lowered against the elastic force of the spring 134 by the weight of the modifying material, It is possible to charge the reforming hopper 120.

Next, the modifying material hopper 120 and the modifying material in the upper portion 121 are sequentially dropped from the modifying material discharging opening 125 into the discharging guide plate 125 by rotating the modifying material feeder 129 with the driving motor 132, To the soil sand supplying device (B). At this time, as the modifying material in the modifying material hopper 120 decreases, the weight decreases, so that the bottom plate 133 rises with the elasticity of the spring 134.

In this way, this operation is performed sequentially, and all the modifying material in the modifying material hopper 120 is discharged.

As described above, when the modifying material discharging opening 125 is located in the middle of the modifying material hopper 120 in the vertical direction, the height of the hopper portion protruding upward from the modifying material discharging opening 125 is reduced, As shown by the imaginary line in Fig. 13, the height protruding upward from the sandwiching device B is lowered, so that in the case of the self-propelled soil improvement machine, the overall height of the machine is lowered.

As the modifying material, cement, cement solidifying agent, burnt lime, slaked lime, lime-based solidifying agent, foaming beads and the like are used.

Next, the first embodiment of the apparatus for mixing the modifying material and the gravel, that is, the crushing and mixing apparatus A will be described.

16, the crushing and mixing apparatus A is provided with a plurality of shafts 2 in a rotatable manner in a housing 1, and a shredding mixer 3 is radially provided on each of the shafts 2 And when the soil and the modifying material are introduced through the opening 5 formed in the upper wall 4 of the housing 1, the soil and the modifying material are mixed and agitated while finishing the soil, ).

Since the crushing and mixing apparatus A is constructed as described above, the soil sand put into the housing 1 is crushed by the crushing mixer 3 into the front side inner surface 1a, the rear side inner surface 1b The inner surface 1a of the housing 1 and the inner surface 1b of the rear side of the housing 1 are opposed to each other.

Next, the above-mentioned gravel-preventing device D will be described in detail.

16 and 17, an opening 142 is formed in an upper portion of each of the front wall 140 and the rear wall 141 of the housing 1, and a peripheral edge portion of the opening 142 The plate 144 is attached to the plate 144 and a plurality of first chains 145 are suspended in the hook 146 at intervals in the left and right direction, 2 chain 147 is suspended from the first chain 145 by a hook 148 spaced apart in the front-rear direction (left and right direction in the figure) and left and right (in the direction perpendicular to the drawing).

The first chain 145 is formed by successively connecting a plurality of rings 149 with the directions of the rings 149 adjacent to the upper and lower sides reversed by 90 degrees. And the holes are alternately arranged in the left-right direction facing the left-right direction. The second chain 147 is formed by sequentially connecting a plurality of rings 150 with the directions of the rings 150 adjacent to the upper and lower sides reversed by 90 degrees. And the holes are alternately arranged in the left-right direction facing the left-right direction.

The directions of the rings 149 and 150 located at the same height as the ring 49 of the first chain 145 and the ring 150 of the second chain 147 are reversed. For example, if the ring 149 of the first chain 145 is in the front-rear direction, the ring 150 of the second chain 147 is in the left-right direction.

Thus, since the ring 149 of the first chain 145 and the ring 150 of the second chain 147 are overlapped in the forward and backward direction with the ring in the forward direction and the ring in the backward direction, So that it becomes difficult for the soil to adhere to the front inner surface 1a and the rear inner surface 1b.

A shaft 152 is rotatably supported at upper and lower intermediate positions in the vicinity of the front wall 140 and the rear wall 141 on the right and left side walls 151 of the housing 1. [ A lever 153 is fixed to a portion of the shaft 152 protruding into the housing 1. The lever 153 is provided with a first rod 154 and a second rod 155 spaced from each other in the front-rear direction.

An arm 156 is provided on a portion of the shaft 152 protruding outside the housing 1 and a weight 157 is provided on the arm 156. The shaft 152 is rotated by the weight 157 via the arm 156 so that the first rod 154 is in contact with the first chain 145 and the second rod 155 is in contact with the second The rotational moment of the arm 156 by the weight 157 and the tension of the first and second chains 145 and 147 come into a balanced state in contact with the chain 147.

Therefore, when the first and second chains 145 and 147 are oscillated by the impact force during the crushing / mixing agitating operation or the housing 1 vibrates, the arm 156 is moved up and down by the inertia force of the weight 157 And the first and second rods 154 and 155 oscillate the first and second chains 145 and 147 because the lever 153 swings back and forth via the shaft 152. [

Therefore, since the first and second chains 145 and 147 are always vibrating, it is difficult for the soil to adhere to the inner surface of the housing 1, and the adhered soil can also be peeled and dropped.

A handle 158 is provided at the portion of the shaft 152 protruding from the housing 1 as in the second embodiment of the crushing and mixing apparatus shown in Fig. 18, 152 are swung forward and backward to swing the first and second rods 154, 155 back and forth.

19, a sprocket 159 is provided at a portion of the shaft 152 protruding from the housing 1, and the sprocket 161 rotated by the motor 160 The chain 162 may be interposed between the sprocket 159 and the sprocket 159 and the first and second rods 154 and 155 may be pivoted back and forth by rotating the shaft 152 in the forward and reverse directions by the motor 160.

Further, the shaft 152 may be directly rotated in the normal direction and rotated in the reverse direction by the motor 160.

As described above, the soil improvement apparatus according to the present invention has been described. However, since the soil supply apparatus rotatably supports the soil supply feeder 14 on the bottom plate 10 constituting the soil hopper 20, It is compact and suitable as a soil supply device for use in self-propelled soil improvement machines.

When the soilfeeder 14 is rotated, the soil is pressed by the feeder blade 17 toward the rake blade 33, and when the soil is passed through the rake blade 33, Since the height of the slurry moving to the crushing / mixing device 13 is made constant, the amount of slurry falling in the slurry discharge opening 13 per unit time becomes constant, and when the slurry is supplied to the crushing mixing device, the slurry supply amount per unit time can be made constant .

Since the outer wall 16 of the soil material feeder 14 is higher than the feeder blade 17 to form the soil material hopper 20, the soil material in the soil material hopper 20 rotates together with the soil material feeder 14, It is possible to smoothly rotate the sandwiching feeder 14 because the rotation resistance of the sandwiching feeder 14 due to the sanding is reduced as compared with the case where the outer standing member 11 of the sandwiching member 10 is made higher than the hopper.

Since the feeder blade 17 is inclined in a direction opposite to the rotation direction of the predetermined angle? With respect to the radial direction, when the soil material placed near the central portion of the soil material feeder 14 is moved and rotated by rotating the soil material feeder 14 Since the gravel-like material is pressed outward along the feeder blade 17, the amount of the gravel-like material becomes uniform from the inner peripheral side to the outer peripheral side.

Also, since the soil near the center of rotation of the sand paper feeder 14 is pressed toward the outer peripheral side by the outwardly directed transfer blade 35, no gravel remains near the center of rotation.

Further, when the soil gravel is raked by the rake blade 33, the remaining gravel is accumulated on the side of the rake blade 33, but the accumulated gravel is prevented from overflowing to the outside by the flow preventing plate 40.

When the position at which the gate 120 is projected into the gravel-discharge opening 13 is changed by extending the cylinder 122, the falling start position of the gravel-like material changes, so that the gravel- (Central portion of the pair of shredding mixers 3) of the openings 5 of the pair of shredding mixers 3.

An example of the modifying material feeder is that the modifying material hopper 61 is provided on the upper wall 67 of the modifying material feeder 60 and the modifying material in the modifying material hopper 61 is disposed on the upper wall 67 of the modifying material feeder 60 Since the modifying material is supplied from the modifying material discharge opening 81 formed in the bottom wall 65, the entire apparatus can be made compact and the installation space can be narrowed, and the modifying material supplying device .

Further, by rotating the rotating body 71 of the modifying material feeder 60, the modifying material is moved by the feeder blade 75 to fall on the modifying material discharging opening 81 and supplied onto the soil material supplying device, When the size of the discharge opening 81 and the rotation speed of the rotating body 71 are made constant, the powder chain modifying material such as cement or lime can be supplied by a predetermined amount per unit time.

Since the size of the opening 94 is larger than that of the modifying material discharging opening 81 from the modifying material discharging opening 81 and the opening 94 is large and the planar shape of the modifying material hopper 61 is large The storage capacity of the modifying material increases. Further, the cover member 95 prevents the modifying material from falling directly into the modifying material discharging opening 81 in the modifying material hopper 61, so that the amount of the modifying material supplied dropwise can be made constant.

Since the height of the modifying material hopper 61 can be adjusted, the height of the modifying material hopper 61 can be increased to increase the storage capacity of the modifying material, and the height of the modifying material can be lowered during transportation, It is optimal as a modifying material feeder.

Since the upper portion of the modifying material hopper 61 can be opened and closed, it can be opened when the modifying material is introduced, and can not be scattered around when the modifying material is supplied.

Another example of the modifying material supply device is that the modifying material feeder 129 is provided in the modifying material hopper 120 and the modifying material is supplied to the modifying material discharging opening 125 (125) while the bottom plate 133 is raised by the spring 134 So that the modifying material can be supplied by a predetermined amount per unit time when the size of the modifying material discharge opening 125 is made constant and the rotational speed of the modifying material feeder 129 is made constant have.

Further, since the modifying material discharging opening portion 125 exists in the upper and lower direction of the modifying material hopper 120, the height of the hopper portion protruding upward from the modifying material discharging opening portion 125 is lowered, The height of the portion protruding upward is lowered, and the entire soil improvement machine is made compact, so that it is suitable as a modifying material feeder for use in the self-propelled soil improvement machine.

According to the crushing and mixing apparatus described above, since the gravel scattering at the time of mixing and stirring does not scatter to the inner surface of the housing 1 in contact with the plurality of first chains 145 and the plurality of second chains 147, It is possible to prevent the adherence of the gravel to the inner surface.

Also, the gravel attached to the first and second chains 145 and 147 can be peeled off and dropped.

The first and second chains 145 and 147 are vibrated by the rod as the arm 156 is vibrated by the vibrations of the housing 1 and the like so that the first and second chains 145, 147 can be peeled off and dropped.

Also, by moving the rod by manual operation, the gravel adhered to the first and second chains 145, 147 can be peeled off and dropped.

In addition, the rods can be forcibly moved by the motor to peel off the gravel adhered to the first and second (145, 147) and drop it.

While the present invention has been described in connection with the exemplary embodiments, it will be apparent to those skilled in the art that various changes, omissions, and additions may be made without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited to the above-described embodiments, but should be understood to include the range defined by the elements recited in the claims and the equivalents thereof.

Claims (16)

A crushing and mixing device having a rotary multistage mixer for crushing and mixing the soil and modifying materials introduced from the openings, A dust and dirt feeder provided at an upper portion of the crushing and mixing device and having a predetermined size communicating with the opening, a rotary tilling feeder for supplying a gravel-like amount of soil to the gravel-discharging opening, , A modifying material discharge opening provided at an upper portion of the gravel-like material supplying device and communicating with the gravel-supplying device at an upstream side of the gravel-discharging opening portion; And a modifying material feeder having an modifying material feeder and an modifying material hopper. [2] The apparatus according to claim 1, further comprising: a bottom plate having an outer upright member at an outer edge portion and having a clay discharge opening between the inner wall and the outer wall; A soil feeder having an inner wall, an outer wall and a plurality of feeder blades connected between the two walls, the soil feeder being rotatably supported on the bottom plate; A driving mechanism for rotationally driving the sand and soil feeder, A rake blade located nearer the direction opposite to the rotation direction of the soil material feeder than the gravel discharge opening and facing the upper surface of the feeder blade, And a plate provided above the soil discharge opening, And a soil supply device which constitutes the earth / sand hopper by either the outer upright member or the outer wall which is higher than the feeder blade and the bottom plate. The soil conditioner according to claim 2, wherein in the soil material supply device, the feeder blade is inclined at a predetermined angle with respect to the radial direction such that the outer side is located in a direction opposite to the rotation direction of the soil material feeder. The soil supply device according to claim 2 or 3, wherein in the soil supply device, the upper surface of the soil supply device extends from the vicinity of the center of rotation of the soil feeder to the vicinity of the inner wall, and the outwardly- Wherein the inner side portion is inclined at a predetermined angle so that the inner side portion is located on the opposite side of the earth's discharge opening portion with respect to the rotation center of the soily feeder. The soil conditioner according to claim 2, wherein an overflow preventing plate is provided on the outside of the rake blade portion in the soil material supplying device. The soil conditioner according to claim 2, wherein a gate facing the gravel-discharging opening is provided in the gravel-supplying device, and the gate is movable forward and backward with respect to the gravel-discharging opening. 2. The rotary electric machine according to claim 1, further comprising: a hollow main body constituted by a bottom wall having a modifying material discharge opening, an outer peripheral wall and an upper wall having an opening; a rotatable body rotatably installed in the main body, And a driving mechanism for driving the rotating body, A modifying material hopper installed at the peripheral edge of the opening of the upper wall of the main body, And a covering member located on the inner lower side of the modifying material hopper and above the discharging opening. 8. The feeder according to claim 7, wherein, in the modifying material supply device, the lower end surface of the covering member is located from a position deviated from the turning body to the vicinity of the outer peripheral wall of the lower surface of the upper wall of the main body, A soil improvement machine comprising a rake blade. The soil conditioner according to claim 7, wherein the modifying material hopper is adjustable in height in the modifying material supplying device. The soil conditioner according to any one of claims 7 to 9, wherein the upper portion of the modifying material hopper is openable and closable in the modifying material supplying device. 2. The refuse hopper according to claim 1, further comprising: a reforming material hopper composed of a cylindrical lower portion forming a concave portion from the upper-lower direction middle portion of the peripheral wall and a cylindrical upper portion provided with a modifying material discharge opening portion on a lower surface wall facing the concave portion; , A reformer feeder rotatably installed in an upper portion of the hopper and including a rotating body having a plurality of feeder blades and a driving mechanism for rotationally driving the rotating body; And a bottom plate which is vertically movably installed in the lower portion of the hopper and which is pressed upward by a spring having an elastic force to fall by the weight of the modifying material. [2] The apparatus according to claim 1, further comprising: a plurality of first chains suspended from the inner surface of the housing, And a plurality of second chains each suspended between an inner surface of the housing (1) to which the gravel-like material adheres and the respective first chains, And a crushing / mixing device including a soil adhering prevention device in which the direction of the ring constituting the first chain and the direction of the ring constituting the second chain form 90 degrees. The soil conditioner according to claim 12, wherein a vibration mechanism for externally vibrating the first chain and the second chain is provided in the soil adhesion prevention device. 14. The apparatus of claim 13, wherein the vibrating mechanism comprises: a shaft mounted on the housing; a lever fixed to the shaft in the housing; a rod mounted on the lever and in contact with the first chain and the second chain; An arm fixed to the shaft outside the housing; and a weight provided on the arm, wherein the arm pivots by the vibration of the housing, and the lever pivots. 14. The apparatus of claim 13, wherein the vibrating mechanism comprises: a shaft mounted on the housing; a lever fixed to the shaft in the housing; a rod mounted on the lever and in contact with the first chain and the second chain; And a handle fixed to the shaft outside the housing, and swinging the lever to swing the lever. 14. The apparatus of claim 13, wherein the vibration mechanism comprises: a shaft mounted on the housing; a lever fixed on the shaft in the housing; a rod mounted on the lever and in contact with the first chain and the second chain; And a motor for driving the shaft, wherein the motor rotates the shaft forwardly and reversely.