JP2003340309A - Crushing conveyor apparatus, soil quality improving system and method therefor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a crushing conveyor apparatus capable of producing improved soil of high quality even in a case for setting earth and sand containing viscous soil or relatively large soil lumps in large quantities to an object to be improved, a soil quality improving system and a soil quality improving method. <P>SOLUTION: The crushing conveyor apparatus is equipped with a feed conveyor 102 for feeding earth and sand, a main body frame 101 for supporting the conveyor frame 103 of the feed conveyor 102, a hopper 115 provided to the end position on the upstream side of the conveyor frame 103, an additive supply device 120 supported by the main body frame 101 so as to be positioned on the downstream side of the feed conveyor 102 from the hopper 115 and supplying an additive for lowering the plasticity of earth and soil to earth and sand fed on the feed conveyor 102, and a crusher 150 provided on the downstream side of the additive supply device 120 and crushing earth and sand and the additive fed on the feed conveyor 102. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a soil improvement system for reforming the soil to be reformed into a reusable improved soil product. For example, the soil or clay containing a relatively large lump of clay is targeted for reforming. Even in the case, the present invention relates to a soil improvement system capable of producing a high quality improved soil product, a soil improvement method, and a crushing conveyor device used therefor.

[0002]

2. Description of the Related Art In recent years, under the background of promoting waste reuse such as the establishment of a so-called construction recycling promotion plan by the Ministry of Construction (1997), for example, burial work for gas pipes, water and sewer work, and other road works.・ Mixing the soil generated from the construction work with the soil improvement material,
There is a growing need for self-propelled soil conditioners that are reusable improved soil products. In addition, the properties of the soil to be modified by the self-propelled soil conditioner have been diversified, and for example, there are cases where the soil containing a large amount of relatively large lumps of clay or the highly viscous cohesive soil are targeted for modification. It is increasing.

By the way, in general, a self-propelled soil conditioner is often provided with a sieve above a hopper which serves as a means for receiving earth and sand in order to remove foreign matters such as stones contained in earth and sand in advance. In this case, if soil containing relatively large lumps of sand is directly charged into the self-propelled soil improvement machine, the sieving tends to remove the lumps of soil to be originally improved. Also,
When cohesive soil or the like is to be modified, soil tends to adhere to the lattice surface of the sieve and cause clogging of the sieve.

Therefore, in order to surely modify the soil to be modified, a soil improvement system having a pretreatment step for pre-crushing the soil is generally operated before the self-propelled soil improver. Sometimes. As a method of pre-crushing the soil to be modified and performing the pretreatment for soil improvement in this way, for example, Japanese Unexamined Patent Application Publication No.
The crusher etc. which were described in the 0-45326 gazette are already proposed. This earth crusher conveys the soil to be modified received by the conveyer conveyor by the conveyer conveyor, and crushes the earth and sand conveyed on the conveyer conveyor by a crusher equipped with a rotary blade (rotary blade crushed body). It is like this.

[0005]

However, the above-mentioned cohesive soil or the like tends to adhere to each other again after crushing and form a lump of earth again. Therefore, even when the above-mentioned conventional technique is applied to the pretreatment step of the soil improvement system for modifying cohesive soil or the like, at the time when it is supplied to the self-propelled soil improvement machine, the earth and sand again form a clod. There is a possibility that it will contain a lot. As a result, as described above, the soil mass that should be originally modified is removed by the sieve, or even if it passes through the sieve, the soil improvement agent cannot enter the inside of the soil mass and is finally discharged. The mixed state of soil may become uneven.

The present invention has been made in view of the above matters, and an object thereof is, for example, even when a clay containing a large amount of cohesive soil or a relatively large lump of soil is targeted for modification.
An object of the present invention is to provide a crushing conveyor device, a soil improvement system, and a soil improvement method capable of producing high-quality improved soil.

[0007]

(1) In order to achieve the above object, a crushing conveyor device of the present invention comprises a conveyor for conveying earth and sand, and a main body frame for supporting the conveyor frame of the conveyor. A hopper that is provided at an upstream end position of the conveyor frame and that receives the soil and sand and guides it onto the conveyor belt of the conveyor, and is supported by the main body frame so as to be located on the downstream side of the conveyor belt with respect to the hopper. , An additive material supply device for supplying an additive material that reduces the plasticity of the earth and sand to the earth and sand conveyed on the conveyor belt, and the conveyor belt provided on the conveyor frame so as to be located on the downstream side of the additive material feeder, At least one crushing device for crushing the earth and sand conveyed above together with the additive.

In the present invention, while the earth and sand received by the hopper are conveyed by the conveyor, the additive is supplied to the earth and sand conveyed on the conveyor. As the additive, for example, lime or the like having a property of lowering the plasticity of cohesive soil is used, and the earth and sand supplied with the additive is subsequently crushed by a crusher on a conveyor.

When crushed by the crusher, the earth and sand are crushed and mixed with the additive. As a result, for example, even when the clay containing a large amount of cohesive soil or clod is targeted for reforming, after the granulation is performed by the crushing device, the clod is adhered to each other to form the clod again. Can be prevented. This is because when crushed by the crusher, the finely ground soil mixes with the additive material uniformly, so that the additive material adheres to the surface of the sand and prevents the re-formation of the soil mass. is there.

Therefore, such a crushing conveyor device is
For example, when it is placed in front of the self-propelled soil improver, the self-propelled soil improver will be supplied with soil that has been uniformly fine-grained in advance, and the soil to be modified will be removed by, for example, a sieve. Also, the mixed state with the soil improving material becomes good, and a high quality improved soil product can be produced.

(2) In the above (1), preferably,
The crushing device has a rotating shaft provided substantially horizontally above the conveyor belt so as to extend in a direction substantially orthogonal to the conveyor frame, and a plurality of crushing blades attached to the rotating shaft.

(3) In the above item (2), and preferably, a supporting base provided on the conveyor frame, and a swinging member that is swingably supported by the supporting mount and rotatably holds the rotating shaft. And a moving member.

(4) In the above (3), preferably, it is formed so as to be pivotally supported by the rotating shaft so as to swing with respect to the swinging member and to cover the plurality of crushing blades. A cover is further provided.

(5) Any one of the above (1) to (4)
It is more preferable that the vehicle further includes a traveling body provided below the main body frame and capable of traveling by itself.

(6) In the above item (5), preferably, there is further provided a turning frame which connects the track frame of the traveling body and the body frame so as to turn.

(7) In the above (6), preferably,
A drive device provided on the main body frame for turning the main body frame with respect to the traveling body is further provided.

(8) Any one of the above (1) to (7)
In one, and preferably, it further comprises a power unit supported by the main body frame.

(9) In order to achieve the above object, the soil improvement system of the present invention supplies the additive material to the earth and sand received by the hopper and conveyed by the conveyer conveyor by the additive material supply device, and at least one solution is provided. A crushing conveyor device for crushing the earth and sand and the additive material conveyed on the conveyor by the crushing device, and a mixture of the earth and sand and the additive material crushed by the crushing conveyor device are received and mixed with the soil conditioner. And a self-propelled soil improvement machine that produces improved soil.

(10) In order to achieve the above object, the soil improvement system of the present invention is a self-propelled soil improvement machine which mixes the received soil with a soil improvement material to produce improved soil, and the self-propelled soil improvement machine. Type improved soil produced by a soil improvement machine is received in a hopper, and an additive material is supplied by an additive material supply device while being conveyed by a conveyer, and the improved soil is conveyed on the conveyer conveyor by at least one crushing device. And a crushing conveyor device for crushing the additive material.

(11) In order to achieve the above object, in the soil improvement method of the present invention, while conveying the earth and sand to be modified by a conveyor, the plasticity of the earth and sand on the conveyor is lowered. Supplying the additive material, the earth and sand conveyed on the conveyor, is supplied to the self-propelled soil improvement machine by previously crushing with the supplied additive material, the previously crushed earth and sand and additive material , Mixed with soil conditioner to produce improved soil.

(12) In order to achieve the above object, and in the soil improvement method of the present invention, the soil to be improved is supplied to a self-propelled soil improver and mixed with the soil improver to obtain the improved soil. Generated, while conveying the generated improved soil by the conveyor, to supply the additive material to reduce the plasticity of the improved soil on the improved soil on the conveyor, the improved soil to be conveyed on the conveyor, Further crush and mix with the supplied additive.

[0022]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of a soil improvement system according to the present invention will be described below with reference to the drawings. FIG. 1 is a side view showing the overall arrangement of an embodiment of the soil improvement system of the present invention. In FIG. 1, 100 is a crushing conveyor device, 200 is a self-propelled soil improvement machine, and the soil improvement system of the present embodiment is, for example, a hydraulic excavator or a transfer conveyor (both not shown) arranged separately, The soil to be modified is supplied to the disintegration conveyor device 100 to be pre-disintegrated and modified by the self-propelled soil improvement machine 200 as reusable improved soil.

FIG. 2 is a side view showing the overall structure of the crushing conveyor device 100 which constitutes an embodiment of the soil improvement system of the present invention, and FIG. 3 is a top view thereof. 2 and 3, reference numeral 101 denotes a main body frame, which includes a plurality of support posts 101a, a plurality of support members 101b provided on the plurality of support posts 101a, and a plurality of support members 101b. Support beam 101 hung around support post 101a so as to be located below
The c and c form a stand.

Reference numeral 102 denotes a conveyer conveys the soil to be modified, and its conveyer frame 103 is supported by the support beam 101c so as to incline upward toward the downstream side (the right side in FIG. 2) in the conveying direction. . 104, 105
Is a driven wheel and a drive wheel that are rotatably supported at both ends of the conveyor frame 103, and 106 is a conveyor belt wound around the driven wheel 104 and the drive wheel 105. Reference numeral 107 denotes a drive device for the conveyor 102, which is directly connected to the drive wheel 105.
By rotationally driving 05, the conveyor belt 106 is circulated between the drive wheel 105 and the driven wheel 104.

Reference numeral 108 designates a plurality of supporting rollers for supporting the carrying surface of the carrying belt 106. These supporting rollers 108 are
A plurality of conveyor belts 106 are arranged below the conveying surface at predetermined intervals. Reference numeral 109 is a belt tension adjusting device having a known structure.
The tension of the conveyor belt 106 is adjusted by adjusting the attachment position in the longitudinal direction (left-right direction in FIG. 2) of the conveyor frame 103. 1
Reference numeral 10 denotes a support member that supports the downstream side (the right side in FIG. 2) of the transport conveyor 102 having such a configuration in the transport direction from the ground.

Reference numeral 115 denotes a hopper that receives the soil to be modified. The hopper 115 is provided at an end of the conveyor frame 103 on the upstream side (left side in FIG. 1) in the earth and sand conveying direction, and is attached to the main body frame 101 via the support member 116. It is supported. Further, the hopper 115 is formed so as to expand upward, and receives the sediment from a sediment supply means such as a hydraulic excavator, and the conveyor belt 1
It is designed to be placed on 06. The width of the lower opening 117 of the hopper 115 is preferably substantially equal to or smaller than the width of the conveyor belt 106.

On the downstream side wall of the hopper 115, a sand / sand cutting outlet is provided so as to face the conveyor belt 106, and the conveyor 102 is provided with a hopper 115.
The inner sediment is conveyed to the outside of the hopper 115 through this sediment cutting exit. At this time, the transfer conveyor 10
The amount of sediment transported by 2 is determined by the opening area of the sand cutting outlet and the transport speed of the transport belt 106. Therefore, the amount of sediment carried can be adjusted by the drive speed of the drive device 107 of the conveyor 102.

Reference numeral 120 denotes an additive material supply device for supplying an additive material to the earth and sand conveyed on the conveyor belt 106. The additive material supply device 120 is positioned downstream of the hopper 115 (on the right side in FIG. 2). Are supported by the body frame 101. The additive to be added to the earth and sand is not particularly limited, but one having a property of reducing the plasticity of the earth and sand such as lime is preferable.

FIG. 4 is a side view showing a detailed structure of the additive supply device 120 in a partial cross section, and FIG. 5 is a top view thereof. As shown in FIGS. 4 and 5, the additive supply device 120
Is a storage portion 121 for the additive material having a substantially rectangular horizontal cross section, and a supply portion 122 for guiding the additive material in the storage portion 121 downward.
And a chute 123 having a substantially quadrangular pyramid shape that plays a role of a funnel that guides the additive material in the storage section 121 to the supply section 122. 123A is a flange-shaped frame plate above the chute 123, and this frame plate 123A is the main body frame 101.
Is supported on the supporting member 101b.

Further, the storage section 121 has a frame plate 123A.
It is composed of a bellows portion 121A which is continuously provided on the top and a top plate portion 121B which covers an upper portion of the bellows portion 121A.
The bellows portion 121A is made of a flexible material that can expand and contract (for example, a polyethylene rubber material), and is reinforced by a plurality of reinforcing rings 124 because the internal pressure from the soil improvement material stored therein acts. . At this time, since the internal pressure of the additive material in the bellows portion 121A becomes higher as it goes downward, the mounting pitch of the reinforcing ring 124 becomes narrower as it goes downward as shown in FIG.

Reference numeral 125 is a receiving port for filling the additive material provided substantially at the center of the top plate 121B, and 126 is the additive material receiving port 1
The open / close lid 126 includes 25 open / close lids.
Is attached via a hinge 127. Note that 126
A is a handle provided in consideration of the opening / closing operation of the opening / closing lid 126, and 126B is a container handle for locking the opening / closing lid 126. The opening / closing lid 126 is configured to open outward with the hinge 127 as a fulcrum, and in a fully opened state, the opening / closing lid 126 is configured to stand still in such a manner that it is opened obliquely upward by a stopper (not shown).

Reference numeral 128 denotes a cutter provided in the storage portion 121. The cutter 128 is provided so as to project upward from a support member 128A vertically provided on the top plate portion 121B so as to face the additive material receiving port 125. . When the additive material supply device 120 is filled with the additive material, the operator first moves the ladder 129 to the loading floor 130 on the frame plate 123A to open the opening / closing lid 126, and stores the additive material using a crane or the like. A flexible container (not shown) that has been added is used as the additive material receiving port 1
Insert into 25. As a result, the flexible container is pressed against the cutter 128 by its own weight, the lower part is torn, and the additive material inside the flexible container is filled in the storage part 121.

Reference numeral 131 is a mounting portion provided in plural (three in this example) on the outer peripheral portion of the top plate portion 121B, and 132 is a support column vertically fixed to the lower part of the mounting portion 131.
Pin holes 133 are provided at predetermined positions above and below 32, respectively.
(Only the upper one is shown in FIG. 4). Thirteen
Reference numeral 4 denotes a plurality of guide tubes (three in this example) which are inserted through the columns 132. The guide tubes 134 are the frame plates 123A.
It is fixed to. In addition, the guide cylinder 134 is provided with a pin hole (not shown), and each of the support columns 132 is formed.
Are inserted in the respective guide tubes 134 so as to be slidable up and down, and can project to the lower side of the frame plate 123A. As a result, the bellows portion 121 </ b> A described above expands and contracts as the support column 132 slides, and the height of the storage portion 121 is variable.

Reference numeral 135 is a stopper pin for fixing the support column 132 to the guide cylinder 134, and this stopper pin 135 is inserted into one of the upper and lower pin holes 133 of the support column 132 via a pin hole (not shown) of the guide cylinder 134. As a result, for example, during operation, the bellows portion 121A is fixed in an extended state to secure a sufficient internal volume of the storage portion 121 (a state shown in FIG. 4), and the crushing conveyor device 10
When transporting 0 on a trailer, etc., the bellows part 121A
By reducing and fixing, the total height can be reduced to a height that clears transportation restrictions.

Reference numeral 123B denotes a lower opening of the chute 123. The chute 123 receives the additive material from an upper opening (not shown) connected to the storage portion 121, and the lower opening 123.
It is adapted to supply to the supply unit 122 via B.
In addition, the chute 123 is formed in a substantially quadrangular pyramid shape whose diameter decreases downward, and the inside of each corner is stretched with a so-called R material, or is formed into a round shape by a welding bead or the like so as to reach each corner. It is preferable that the additive material is prevented from accumulating.

FIG. 6 is a side sectional view showing the detailed structure of the supply section 122. As shown in FIG. 6, in the present embodiment, the supply unit 122 is composed of a screw feeder, but there is no special limitation to this, and it may be replaced by, for example, a rotary feeder or the like. Reference numeral 136 denotes a substantially cylindrical casing of the supply unit 122. The casing 136 has an upstream side (left side in FIG. 6) and a downstream side (FIG. 6) in the transfer direction of the additive material.
On the right side of the center), there are provided an introduction port 136a and a supply port 136b for the additive. 137a and 137b are end brackets provided at both ends of the casing 136,
Reference numerals 138a and 138b denote bearings provided on the end brackets 137a and 137b, respectively. 139 is a hollow provided inside the casing 136 (may be solid)
The rotary shaft 140 is a screw (auger) spirally provided on the outer periphery of the rotary shaft 139.

Both ends of the rotary shaft 139 have bearings 138a, 1a.
The screw 140 is rotatably supported by 38b, and the pitch of the screw 140 is gradually increased from the introduction port 136a side toward the supply port 136b side. If the screw pitches are equal, if the additive material is supplied on the upstream side (left side in FIG. 6) of the introduction port 136a, the additive material supply to the supply unit 122 will be saturated at that time. .
Therefore, the additive may not be able to enter from the downstream side (right side in FIG. 6) of the inlet 136a, and the supply of the additive may be biased to the upstream side of the inlet 136a. As a result, the so-called rathole phenomenon may occur, but in this example, the receiving capacity between the screws increases toward the discharge side, so that the additive material is entirely supplied from the introduction port 136a and the rathole phenomenon occurs. Can be suppressed.

Reference numeral 141 denotes a drive unit for the supply section 122. The drive unit 141 is supported by the end bracket 137a via a support member 142. 143 and 144 are
The sprockets 145 provided on the output shaft of the drive device 141 and the rotary shaft 139 respectively are the sprockets 14
It is a chain wound around 3,144. That is, the driving force of the driving device 141 is transmitted via the chain 145 to the rotating shaft 139.
Is transmitted to the screw 140 to rotate the screw 140. As a result, the additive material inside the supply unit 122 is transferred toward the supply port 136b, and the transfer conveyor 102
It is designed to be supplied in a constant amount to the earth and sand transported above. The driving device 141 has a configuration in which the rotation speed can be controlled, and the supply speed of the additive can be adjusted by controlling the rotation speed. Further, as can be seen from FIG. 2 as well, the casing 136 is inclined upward in the transfer direction of the additive material (rightward in FIG. 2) and is arranged so as to be substantially parallel to the transport conveyor 102. . Thereby, the height of the additive supply device 120 is reduced.

Returning to FIG. 2, reference numeral 150 denotes the conveyor 102.
This is a crushing device for crushing the earth and sand and the additive material conveyed above. In this example, an example in which two crushing devices 150 are provided will be described, but the number of devices is not limited and three or more can be provided. It is good, and only one unit may be provided. less than,
The detailed structure of the disintegrator 150 will be described with reference to FIGS. 7 to 10.

FIG. 7 is a side view showing the detailed structure of the disintegrator 150, and FIG. 8 is a sectional view taken along line VIII-VIII in FIG. In FIGS. 7 and 8, reference numeral 151 denotes a support pedestal provided on the conveyor frame 103.
The reference numeral 1 includes a base frame 151a provided on the conveyor frame 103, a plurality of posts 151b provided upright on the base frame 151a, and a bracket 151c provided on the posts 151b. 152
Is a swinging member that is swingably supported by the supporting member 151, and the upper end of the swinging member 152 has a bracket 151c.
Are connected to each other via a support shaft 153.

Reference numeral 155 denotes a rotary body for crushing earth and sand together with an additive material. The rotary body 155 has a rotary shaft 156 rotatably held at the tip of the swing member 152 and the rotary shaft 156.
And a plurality of crushing blades 157 provided substantially radially. The rotating shaft 156 is provided substantially horizontally above the conveyor belt 106 so as to extend in a direction (horizontal direction in FIG. 8, perpendicular direction in FIG. 2) substantially orthogonal to the conveyor frame 103. The rotating shaft 156 includes support portions 156a and 156a at both ends supported by the swinging member 152 via bearings 158 and 158, and the support portions 15 and 15.
6a, 156a and an intermediate portion 156b interposed therebetween. The intermediate portion 156b and the support member 156
a, 156a, and the flange 15 at each of the opposite ends.
6c is provided, and the intermediate portion 156b and the support member 15 are provided.
6a and 156a, through the mutual flange 156c,
For example, it is fastened with a bolt or the like.

Here, FIG. 9 is a sectional view of the rotating body 155 taken along the line IX-IX in FIG. As shown in FIG. 9 and FIG. 8 described above, the crushing blades 157 are provided so as to rotate in the direction opposite to the transport direction of the transport belt 106 and incline in the direction opposite to the rotational direction of the rotating body 155. ing. Also,
The crushing blades 157 are each formed to be curved in the axial direction of the rotary shaft 156, and the bending directions of the crushing blades 157 that are adjacent to each other in the circumferential direction are staggered. The rotation locus of the rotating body 155 is close to the conveyor belt 106. In this way, by rotating the crushing blade 157 in the direction opposite to the direction in which the gravel is conveyed, the crushing blade 157 is brought into contact with the crushing blade 157 by contacting the crushing blade 157 with the soil and the additive that are being conveyed. It is designed to secure the frequency. Along with this, each crushing blade 157 is curved in the axial direction of the rotary shaft 156, so that the contact area between the crushing blade 157 and the earth and sand or the additive material is ensured.

Reference numeral 159 denotes the intermediate portion 15 of the rotary shaft 156.
6b is a mounting plate that is mounted at almost equal intervals in the axial direction,
Strictly speaking, each crushing blade 157 is provided so as to be attachable to and detachable from the mounting plate 159 by, for example, a bolt 160. Then, as described above, the intermediate portion 156b is
Since the rotating shaft 156 can be attached to and detached from the supporting portions 156a, 156a, the intermediate shaft 156 can be removed together when the crushing blade 157 is replaced.

Reference numeral 161 is a drive device of the disintegration device 150, and the drive device 161 is provided on the bracket 151c on one side (right side in FIG. 8). 162,163
Are sprockets provided at the ends of the output shaft 161a of the drive device 161 and the support portion 156a of the rotary shaft 156, and 164 is a chain wound around these sprockets 162 and 163. Thereby, the drive device 161
Is transmitted to the rotating body 155, and the rotating body 155 is rotationally driven as shown in FIG. The drive device 161 can adjust the rotation speed.

Reference numeral 165 is a cover which is formed so as to cover the rotating body 155 and which prevents scattering of earth and sand and additive material splashed up by the rotating body 155. The cover 165 is rotatably supported by the rotary shaft 156 (support portion 156 a) and is configured to be capable of swinging relative to the swing member 152. A plate 16 having a groove 166a formed in an arc shape concentric with the rotating shaft 156 (support portion 156a) is provided on the side surface of the cover 165 (side surface in the direction orthogonal to the paper surface in FIG. 7).
A plurality of (6 in this example, two on each side, a total of four) 6 are attached. Reference numeral 167 denotes a pin provided inside the swinging member 152. The pin 167 is provided so as to correspond to the plate 166, and is fitted in the groove 166a of the plate 166.

Here, FIGS. 10A to 10C.
FIG. 9 is an explanatory diagram of relative movement of the swing member 152 and the cover 165. First, as shown in FIG. 10A, the swinging member 152 and the cover 165 are normally arranged such that the lower part of the cover 165 approaches the transport belt 106 substantially in parallel due to its own weight. Here, as shown in FIG. 7, a plurality of stopper pins 168 are provided on the brackets 151c, 151c (two stopper pins 168 on each side, four in total).
The rocking member 15 is provided and is in a normal state.
2 contacts the stopper pins 168 and is held at the angle shown in FIG. 7 (or FIG. 10A). At this time,
The cover 165 is formed such that the weight on the downstream side in the earth and sand transport direction (the right side in FIG. 10A) is heavy, and from the weight balance, the cover 165 tries to rotate in the same direction as the rotating body 155. The lower end portion comes into contact with the conveyor belt 106 and the rotation is suppressed.

When the earth and sand conveyed on the conveyor belt 106 is guided to the crushing device 150, the acting direction of the earth and sand received by the rotating body 155 is the opposite direction to the earth and sand conveying direction by the conveyor belt 106, and therefore the crusher blade. 157 acts in a direction to bite into the earth and sand being conveyed. However, when the crushing reaction force of the earth and sand becomes large, or when a stone or the like contained in the earth and sand is caught, the swinging member 152 rotates counterclockwise in FIG. 10B with the support shaft 153 as a fulcrum. In addition, the cover 165 has a weight balance shown in FIG.
(B) Rotate counterclockwise. Then, when the crushing reaction force of the earth and sand further increases, or when a large stone or the like is caught, the rocking member 152 is further moved as shown in FIG.
Is pushed to the downstream side and swings. In the state of FIG. 10C, the cover 165 has the above-mentioned pin 167,
The other end of the groove 166a provided in the plate 166 of FIG.
(C) The center left end) is contacted and rotation is suppressed, and the lower portion is substantially parallel to the conveyor belt 106. With such a configuration, the cover 165 operates so as not to hinder the swinging operation of the swinging member 152 and prevent the gap between the cover 165 and the transport belt 106 from increasing even if the relative position to the transport belt 106 changes. It is configured.

With the above configuration, the crushing conveyor device 10
0 is a conveyor 1 for carrying the earth and sand received in the hopper 115.
The additive material is supplied by the additive material supply device 120 while being conveyed by 02, and the earth and sand are crushed together with the additive material by the crushing device 150 during the conveyance and supplied to the self-propelled soil improvement machine 200 in the subsequent stage. There is.

The self-propelled soil improvement machine 200 has a construction known as this type. Below, the structure of the self-propelled soil improvement machine 200 which comprises one Embodiment of the soil improvement system of this invention is demonstrated using FIG.

In FIG. 11, reference numeral 201 denotes a traveling body that enables self-propelled traveling, and the traveling body 201 includes a track frame 202, driven wheels 203 and drive wheels 204 provided at both ends of the track frame 202, and a drive wheel thereof. Ring 204
And a crawler belt 206 wound around the driven wheel 203 and the drive wheel 204. Two
Reference numeral 07 is a main body frame provided above the track frame 202.

Reference numeral 208 is a sieving device for selecting the earth and sand to be charged according to the particle size. The sieving device 208 has a lattice 209 of a predetermined mesh size installed therein. Further, the sieving device 208 is provided on one side in the longitudinal direction of the main body frame 207 (see FIG.
The upper part (left side in the middle of FIG. 1) is oscillatably supported via a spring 210, and while vibrating, those larger than the size of the grid 209 are removed, and the smaller ones are guided downward. Reference numeral 211 is a drive device of the sieving device 208.

Reference numeral 212 is a hopper for receiving the soil and sand selected by the sieving device 208. The hopper 212 is formed in a frame shape that expands upward, and is located below the sieving device 208 in the longitudinal direction of the main body frame 207. It is supported on one side (left side in FIG. 11). Reference numeral 213 is a transfer conveyor for transferring the earth and sand in the hopper 212.
3 is a main frame 2 so that it is inclined upward from the lower side of the hopper 212 toward the transport direction (right direction in FIG. 11).
It is supported by 07.

Numeral 214 is a soil improvement material supplying device for adding the stored soil improvement material to the earth and sand.
Reference numeral 14 denotes a storage unit 215 as a storage unit for the soil-modifying material having a substantially cylindrical box shape, and a supply unit provided below the storage unit 215 and serving as a supply unit for adding the soil-modifying material to the earth and sand on the conveyor 213. 216 and. The supply unit 216 is located above the transport conveyor 213 and stores the soil 215 transported on the transport conveyor 213 in the storage unit 215.
The soil improvement material inside is supplied. A plurality of (for example, three) columns 217 are provided upright near the center of the main body frame 207 in the longitudinal direction (horizontal direction in FIG. 11) and support the storage portion 215.

Reference numeral 218 denotes a mixing device for producing improved soil, which is not shown in the drawing for preventing complication, but this mixing device 218
Is equipped with a plurality of substantially parallel paddle-type mixers (not shown) inside, so that the paddle mixer mixes the earth and sand introduced from the conveyor 213 and the soil conditioner to generate improved soil. Has become. Further, this mixing device 218 is arranged in the longitudinal direction of the main body frame 207 (see FIG. 11).
Although it is provided approximately horizontally in the center (in the left-right direction) and is not shown in particular for the purpose of preventing complexity, an inlet for earth and sand and a soil improvement agent is provided on the upper side of one side (left side in FIG. 11) of the other side (FIG.
The right side of the center of 1) is equipped with an outlet for improved soil. A drive device 219 drives the paddle mixer.

Reference numeral 220 denotes a discharge conveyor for discharging the improved soil produced by the mixing device 218 to the outside of the machine. The discharge conveyor 220 is provided with a support member (not shown) on the main body frame 2
It is suspended and supported from 07 etc. The discharge conveyor 220 is extended from below the outlet of the mixing device 218 to the outside of the machine (in this case, the right direction in FIG. 11) and is inclined upward in the transport direction (the right direction in FIG. 11). There is.

Reference numeral 221 denotes a power unit equipped with a drive source for the self-propelled soil improvement machine according to the present embodiment.
The other side in the longitudinal direction of the body frame 207 (right side in FIG. 11)
It is supported by the end portion via a support member 222. Also,
This power unit 221 is not shown in order to prevent complication.
Includes an engine, at least one hydraulic pump driven by the engine, and a plurality of control valves for controlling pressure oil supplied from the hydraulic pump to each drive device.

Next, the operation of the soil improvement system of the present embodiment having the above configuration will be described. In FIG. 1, for example, the soil to be modified accumulated in a predetermined stock location (not shown) is loaded into the hopper 115 of the disintegration conveyor device 100 by a separately provided hydraulic excavator, a conveyor, or the like (not shown). The soil to be modified, which has been put into the hopper 115, is sequentially transported by the transport conveyor 102, and the additive material is supplied from the additive material supply device 120 during the transportation. Further, the earth and sand thus supplied with the additive material are mixed with the additive material while being finely crushed (granulated) by the crushers 150, 150. This mixture of earth and sand and the additive is introduced into the self-propelled soil improvement machine 200 from the downstream end (right side in FIG. 1) of the transfer conveyor 102 in the transfer direction.

Self-propelled soil conditioner 20 mixed with additive materials
The soil introduced into No. 0 is sorted by the sieve device 208 according to the particle size thereof and introduced into the lower hopper 212 (the soil to be modified which has passed through the lattice 209 of the sieve device 208 moves to the lower hopper 212). be introduced). The soil to be modified that has been received in the hopper 212 together with the additive material is transported to the outside of the hopper 212 by the transport conveyor 213 below it. Then, this mixture of earth and sand and the additive is added with a predetermined amount of the soil improver by the soil improver supply device 214 during the transportation by the transport conveyor 213, and is introduced into the mixing device 218 together with the soil improver.

The mixture of the earth and sand and the additive introduced into the mixing device 218 is uniformly stirred and mixed with the soil improving agent introduced together and discharged onto the discharge conveyor 220 as the improved soil. Then, the improved soil conveyed by the discharge conveyor 220 is finally discharged to the outside of the self-propelled soil improvement machine 200 and is stocked, for example, in a predetermined stocking place (not shown).

The operational effects obtained by the present embodiment will be sequentially described below. (1) Effect of crushing earth and sand together with additive material Improving quality of soil In the present embodiment, as described above, the crushing conveyor device 100 is arranged in front of the self-propelled soil improving machine 200. ,
The soil to be modified is crushed in advance and introduced into the self-propelled soil improvement machine 200. In the disintegration conveyor device 100, the hopper 1
While the earth and sand received in 15 are conveyed by the conveyor 102, the additive supply device 120 supplies the additive to the earth and sand conveyed on the conveyor 102. As the additive, for example, one having a property of reducing the plasticity of cohesive soil such as lime is used.

As a result, the earth and sand to be modified is crushed by the crusher 1.
When it is crushed by 50, it will be crushed together with the additive material, and as a result, the finely-divided earth and sand are mixed with the additive material uniformly, so that the additive material may be in a state of being attached to the earth and sand surface. it can. Therefore, in the present embodiment,
For example, even when a clay containing a large amount of cohesive soil or a clod is targeted for modification, it is prevented that the clods are finely pulverized by the crushing device 150 and then the clod is adhered to each other to form a clod again. can do.

Therefore, such a crushing conveyor device 10
When 0 is arranged, for example, in the preceding stage of the self-propelled soil improvement machine 200, the self-propelled soil improvement machine 200 is supplied with the soil which has been uniformly finely granulated in advance. And, since the plasticity of the sediment decreases due to the mixing with the additive material, for example, even when the soil that contains a large amount of cohesive soil or lumps is targeted for modification, the crushing and mixing by the paddle mixer is promoted, and the soil quality is improved. The mixed state with the material is also uniform and in a good state, the soil quality can be improved reliably and effectively, and a high-quality improved soil product can be produced.

Improvement of work efficiency by prevention of adhesion of earth and sand In the crushing conveyor device 100, as described above, by supplying the additive to the earth and sand before crushing, the action of lowering the plasticity of the earth and sand works. If the soil to be modified is directly supplied to the crushing device 150, the soil may be splashed up by the rotating body 155 and adhere to and grow on the inner wall of the cover 165. As a result, in a remarkable case, the rotation of the rotating body 155 may be hindered, but in this example, the plasticity of the earth and sand is lowered, so that the crushing device 150 and the cover 165 are reduced.
It is possible to prevent the adhesion of sediment.

Improvement of reforming efficiency For example, when a clay containing a large amount of cohesive soil or a clod is targeted for reforming, the clods to be reformed adhere to each other even if they are crushed as described above to reform the clod. There are cases. As a result, in the self-propelled soil improvement machine 200, for example, soil having a property to be originally modified may be removed by the sieving device 208 or adhered to the lattice 209 to cause clogging. . As a result, there is a possibility that the ratio of the earth and sand passing through the sieving device 208 will decrease, and the reforming efficiency will decrease.

On the other hand, in this example, the crushing conveyor device 100 crushes the earth and sand together with the additive to lower the plasticity, thereby preventing the re-formation of the soil lumps and keeping the plasticity in the state of uniform fine particles. The earth and sand are supplied to the self-propelled soil improvement machine 200. Therefore, the soil is well separated and the sieving efficiency is improved, so that the sieving device 208 can prevent the earth and sand having a property to be originally modified from being removed or from being attached to the lattice 209. It is also possible to improve the efficiency of soil modification.

Application to Various Reform Targets (Corresponding to Remediation of Contaminated Soil) First, in this example, before the input target soil is discharged as improved soil, the former stage of the crushing conveyor device 100 is used. The process and the subsequent stage process by the self-propelled soil improvement machine 200 will be performed. Therefore, it is possible to secure a relatively long time until the input soil is discharged as the improved soil, and it is also applicable to, for example, a purification treatment of a contaminated soil containing VOC (volatile organic compound).

More specifically, in the crushing conveyor device 100, quick lime is added as an additive material in the additive material supply device 120.
By supplying to the OC contaminated soil, the VOC contaminated soil can be heated and vaporized by utilizing the reaction heat between the water contained in the contaminated soil and the quick lime. At this time, heat is easily transferred effectively by crushing the earth and sand in the crushing device 150 in advance, and it can be expected that the VOC vaporizes in a short time. Further, since the sediment stays in the system for a relatively long time, VOC removal during transfer in the system can be expected. Depending on the VOC concentration, the finally discharged improved soil may be used as backfill soil. It will be possible.

Further, even if a so-called dehydrated cake or the like produced in a crushed stone factory or the like is used as the soil to be modified, the dehydrated cake is crushed together with the additive in the crushing conveyor device 100, as in the case of the cohesive soil. As a result, effective crushing can be performed, and as a result, the self-propelled soil improvement machine 200 in the latter stage can be surely mixed and improved with the soil improvement material.

(2) Prevention of biting If the cover 165 is fixed to the swinging member 152, the swinging movement of the swinging member 152 causes the cover 16 to rotate.
However, in the present example, the swinging member 152 and the cover 165 are rotatable by receiving a reaction force from the earth and sand. In other words, the rotating body 155 and the conveyor belt 1
The gap with 06 is changed.

If the gap between the rotating body 155 and the conveyor belt 106 does not change, if gravel or the like is mixed in the earth and sand, the gravel will cause the gravel to rotate.
There is a possibility that it will be caught between the rotor and the rotor 155, and the rotation of the rotor 155 will be hindered.
It is possible to prevent gravel or the like from being caught between the conveyor belt 106 and the conveyor belt 106. Thereby, the crushing conveyor device 100
The operation can be prevented from stopping due to the inclusion of gravel and the like, and the productivity can be improved by performing the continuous operation.

(3) Scattering Prevention In this example, in the crushing device 150, when the load of the rotating body 155 becomes large or gravel or the like is introduced as described above, the oscillating member 152 oscillates. At this time, as described with reference to FIGS. 10A to 10C, the cover 165 always maintains a posture that does not hinder the swing of the disintegration device 150, and the gap between the cover 165 and the conveyor belt 106 is as small as possible. Therefore, the scattering of earth and sand can be suppressed to a minimum.

(4) Improvement of maintainability The crushing blades 157 constituting the rotating body 155 wear out with the lapse of the usage period, and therefore need to be replaced as appropriate. In the present embodiment, the crushing blade 157 has the rotating shaft 15
Since 6 (strictly speaking, the mounting plate 159) is fastened with the bolt 160, it can be easily replaced.
Further, the rotary shaft 156 to which these crushing blades 157 are attached
The intermediate portion 156b of the rotary shaft 156 is also supported by the support portion 1 at both ends.
Since it can be attached to and detached from 56a and 156a, the intermediate shaft 156b can be removed together without removing the crushing blades 157 one by one. With such a configuration, high maintainability can be ensured.

(5) Improvement of crushability In the present embodiment, crushing of earth and sand is performed by crushing blades 157.
It is made by the collision with the earth and sand. At this time, in this example, the tip of each crushing blade 157 is curved in the width direction of the conveyor belt 106, so that the collision area between the crushing blade 157 and the earth and sand is secured accordingly. Further, since the rotation speed of the rotating body 155 can be adjusted by the driving speed of the driving device 161, the number of collisions (frequency) between the crushing blade 157 and the earth and sand is increased by increasing the rotation speed of the rotating body 155. It is possible to reliably crush the soil. In order to secure the number of collisions, the conveyor 1
It is also achieved by slowing the sediment transport speed of 02. In this example, the rotating body 155 is rotated in the opposite direction to the earth and sand conveying direction of the conveyor 102, but may be in the same direction as the earth and sand conveying direction of the conveyor 102.

Further, in the present embodiment, a plurality (two) of crushing devices 150 are arranged on the conveyer conveyor 102, so that compared to the case where only one crushing device 150 is arranged, The crushing performance can be improved.

In the present embodiment, the crushing blades 157 are attached to the conveyor belt 106 in order to obtain the above effect (5).
However, the essential effect of the present invention is that even if the sand containing a large amount of cohesive soil or agglomerates is targeted for modification, the sand targeted for modification can be uniformly thinned. By granulating and supplying it to the self-propelled soil improvement machine 200, it is possible to reform reliably and effectively, and the shape of the crushing blade 157 is not necessarily limited to the above. Further, a plurality of (two in this example) crushing devices 150 are provided, but only one crushing device 150 may be used as long as the above essential effects are obtained. Of course, three or more units may be provided.

To obtain the above effect (4), the crushing blade 15
7 and the intermediate portion 156b of the rotary shaft 156 are configured to be removable, but they are not necessarily required to be removable to obtain the essential effect. Further, in order to obtain the above effect (3), the cover 165 is configured to be swingable with respect to the swinging member 152, but as long as the above effect (1) is obtained, this configuration is not always necessary. Absent. Further, in order to obtain the above effect (2), the rotating body 155 and the conveyor belt 1
Although the gap with 06 is changed according to the load applied to the rotating body 155, this is not always necessary as long as the above effect (1) is obtained.

Next, another embodiment of the soil improvement system of the present invention will be described. FIG. 12 is a side view showing the overall arrangement of another embodiment of the soil improvement system of the present invention. However, in FIG. 12, portions similar to those in the previous drawings and portions that can be considered similar are denoted by the same reference numerals, and description thereof will be omitted. As shown in FIG. 12, the present embodiment is different only in that a crushing conveyor device 100A capable of self-propelling is arranged in a front stage of a self-propelled soil improvement machine 200, and other configurations are the same as those of the above-described one embodiment. It is similar to the form. Below, the crushing conveyor device 10
The configuration of 0A will be described.

FIG. 13 is a side view showing the overall structure of a crushing conveyor device 100A constituting another embodiment of the soil improvement system of the present invention, and FIG. 14 is a top view thereof. However,
In FIGS. 13 and 14, the same parts as those in the previous drawings and parts that can be considered to be similar are denoted by the same reference numerals, and description thereof will be omitted. In FIGS. 13 and 14, reference numeral 170 denotes a traveling body that enables self-propelled traveling. The traveling body 170 includes a track frame 171, driven wheels 172 and drive wheels 173 provided at both ends of the track frame 171, Ring 1
It is composed of a drive device 174 directly connected to 73, and a crawler belt 175 wound around driven wheels 172 and drive wheels 173. Reference numeral 101d denotes a frame that supports the support post 101a. In the present embodiment, the frame 101d
However, the main body frame 101 is configured with the support post 101a, the support member 101b, and the support beam 101c.

Reference numeral 176 denotes a revolving frame which rotatably connects the track frame 171 of the traveling body 170 and the main body frame 101 (frame 101d), and although not particularly shown, the revolving frames 176 are relative to each other. The inner ring fixed to the track frame side and the outer ring fixed to the frame 101d side are rotatable. Reference numeral 177 is a drive device for rotating the main body frame 101 with respect to the traveling body 170. The drive device 177 is
A pinion fixed to the main body frame 101 (frame 171d) and provided at the tip of the output shaft (not shown) meshes with an internal gear provided on the inner peripheral side of the inner ring of the turning frame 176. As a result, the pinion of the drive device 177 is made to revolve around the inner wheel of the revolving frame 176 while revolving around its own axis, and the main body frame 101 pivotally drives the traveling body 170 together with the drive device 177. .

Reference numeral 178 denotes a power unit incorporating a power source for the crushing conveyor unit 100A, and this power unit 178 is provided on the main body frame 101 (frame 101d). In the power unit 178, the conveyor 102,
Additive material supply device 120, crushing device 150, traveling body 17
0, an engine (not shown) serving as a power source of the driving device 177, and at least 1 driven by this engine.
A hydraulic pump (not shown), a control valve device (not shown) including a plurality of control valves for controlling the direction and flow rate of the pressure oil from the hydraulic pump are provided.
In the present embodiment, the downstream side (the right side in FIG. 13) of the transport conveyor 102 in the transport direction is supported by the power unit 178 via the support member 110.

Reference numeral 179 denotes a driver's seat of the crushing conveyor device 100A, and this driver's seat 179 is provided in a section on the front side (left side in FIG. 13) of the power unit 178. This driver's seat 17
8 is provided with an operation lever 180 and the like for operating the traveling body 170.

Also in the present embodiment having the above-mentioned configuration, the same effect as that of the above-mentioned one embodiment can be obtained. Further, in the present embodiment, the crushing conveyor device 100
Since A has the power unit 178, it is possible to operate the drive unit of each device by itself without using an external power source or the like, and the work can be immediately performed at the brought-in site.

Further, since the traveling body 170 is provided, the vehicle can be moved by itself on the site, and the self-propelled soil improvement machine 2
Since it has high mobility together with 00, it is easy to change the layout of the soil improvement system. Further, since the traveling body 170 is a so-called crawler type equipped with a crawler belt 175, it can easily get into soft ground at a construction site, etc., and is not so limited by the conditions of the ground at the site. You can effectively use the work space. Further, since the crushing conveyor device 100A is configured to be able to travel by itself, similar to the self-propelled soil improvement machine 200, for example, a special work machine such as a crane is not required for loading and unloading work on a trailer, etc., and the soil improvement system as a whole,
Transport between sites becomes easy.

In addition, in the disintegration conveyor device 100A, the transfer conveyor 102 can rotate with respect to the traveling body 170. If the transfer conveyor 102 does not have a turning function,
In order to change the receiving position and the discharging position of the sand of the crushing conveyor device 100A, the position of the crushing conveyor device 100A itself must be finely adjusted by pivoting the traveling body 170, which is very difficult for the operator. This is a troublesome task. However, in the present embodiment, the drive device 17
7 is driven, the conveyer 102 moves the traveling body 170.
Since the vehicle turns, the receiving position and the unloading position of the sand can be easily changed.

In both of the above embodiments, the crushing conveyor devices 100 and 100A are arranged in front of the self-propelled soil improvement machine 200, and the soil to be reformed is crushed in advance to propel the self-propelled soil The example of supplying the improved machine 200 has been described. However, as shown in FIGS. 15 and 16, the crushing conveyor devices 100 and 100A are self-propelled soil improvement machines 200.
Even if it is placed in the latter stage, it will contribute to the improvement of the quality of the improved soil.

In the soil improvement system shown in FIG. 15 or FIG. 16, when the soil to be modified has a relatively low viscosity and is easily modified, the input soil is the self-propelled soil modifier 200. The sieving device 208 is rarely used.
Further, a configuration in which the sieving device 208 is omitted may be considered depending on the properties of the soil to be modified. In such a case, the soil to be modified is smoothly introduced into the hopper 212 and mixed with the soil improving material. The improved soil generated in this way is the crushing conveyor apparatus 100 (or the crushing conveyor apparatus 100.
A).

The improved soil supplied to the crushing conveyor device 100 (or the crushing conveyor device 100A) is conveyed by the conveyer conveyor 102, and is further finely divided by the crushing device 150 together with the additive material from the additive material supplying device 120. It is mixed while being converted. As a result, compared to the improved soil generated by the self-propelled soil improvement machine 200 alone, it is possible to generate high-quality improved soil having fine particles with a uniform particle size.

Of course, in the soil improvement system of FIG. 16, by disposing the crushing conveyor device 100A capable of traveling by itself, it is easy to change the layout of the entire soil improvement system because of its good mobility. Inter-site transportation with a trailer or the like can be easily performed.

In addition, for example, the accumulated height of the improved soil discharged from the crushing conveyor device 100A gradually increases as the work progresses, and as a result, the piles of the discharged improved soil contact the transfer conveyor 102 as they are. In some cases, However, in the soil improvement system of FIG. 16, since the crushing conveyor device 100A has a turning function, it is easy to move the crushing conveyor device 100A so as to draw a fan with the position of the hopper 115 as a fulcrum. Accordingly, it is possible to continuously generate high-quality improved soil while sequentially changing the accumulation position of the improved soil.

In the soil improvement system shown in FIGS. 15 and 16, the self-propelled soil improvement machine 2 in the preceding stage is used.
At 00, since the soil improving agent is mixed with the earth and sand and the plasticity is already lowered, the crushing conveyor device 100 at the subsequent stage is
In (or the crushing conveyor device 100A), it is not always necessary to supply the additive material. Therefore, when the crushing conveyor devices 100, 100A are used for the purpose of post-crushing in the subsequent stage of the self-propelled soil conditioner 200, the additive supply device 120 may be omitted depending on the properties of the soil to be modified. Absent.

In such a case, as shown in FIG. 17, the crushing apparatus 150 is attached to the discharge conveyor 220 in the same manner as the crushing conveyor apparatus 100, and the self-propelled soil improvement machine 200A is installed. With the above configuration, the same effect can be obtained. In addition, the self-propelled soil improvement machine 20 of FIG.
0A has the same configuration as the self-propelled soil improvement machine 200 except that the disintegration conveyor 220 is provided with the disintegration device 150, and can be regarded as the same as or similar to the self-propelled soil improvement machine 200. 17 are assigned the same reference numerals as in FIG. 11 and description thereof will be omitted. Further, in FIG. 17, the configuration in which only one disintegration device 150 is attached is shown, but the number of disintegration devices 150 is not limited, and a plurality of disintegration devices 150 may be provided.

In the above description, the crushing conveyor devices 100 and 100A are arranged before or after the self-propelled soil improvement machine 200 for the purpose of pre-crushing the soil to be reformed or post-crushing the improved soil. Used as. However, as described above, the soil to be modified is crushed and mixed with the additive when passing through the crusher 150. From this, it can be said that the crushing apparatus 150 has both crushing performance and mixing performance, and if the soil improving agent is supplied by the additive material supplying apparatus 120, the crushing conveyor apparatus 10
0,100A can be mixed while crushing the earth and sand and the soil conditioner. Therefore, the crushing conveyor device 100,
100A has sufficient performance to perform soil improvement work when used alone.

Further, in the above, the crushing conveyor device 1
00A, self-propelled soil improvement machine 200, 200A, crawler track 1
Although a so-called crawler type traveling body having 75 and 206 is provided, the present invention is not limited to this, and a so-called wheel type traveling body may be provided, for example. Further, the self-propelled soil conditioner 200, 200A has been described as being equipped with a so-called mixing system mixing device 218 including a paddle mixer, but for example, a mixing device including a screw mixer instead of the paddle mixer, or rotating at high speed. A so-called crushing type mixing device for crushing and mixing the earth and sand and the soil conditioner using a rotary impactor or the like may be provided. Similar effects are obtained in these cases.

Further, the crushing conveyor device 100, 100A
At the additive material supply unit 12 of the additive material supply device 120
Although 2 is composed of a screw feeder, the present invention is not limited to this, and a rotary feeder or the like may be used. In the soil-improving-material supplying device 214 of the self-propelled soil-improving machines 200A and 200A, the rotary feeder is illustrated as the soil-improving material supplying unit 216, but it goes without saying that it may be replaced with, for example, a screw feeder. Further, although the sieve device 208 is provided in the self-propelled soil improvement machines 200 and 200A, the soil improvement system may be configured by disposing the self-propelled soil improvement machine having no sieve device. In addition, the sieving device 20
8 may be provided with a so-called tilt.
On the contrary, although the sieving conveyor devices 100 and 100A are not provided with a sieving device or the like, a sieving device or a tilt may be provided depending on the properties of the soil to be modified. Similar effects are obtained in these cases.

[0095]

EFFECTS OF THE INVENTION According to the present invention, in a crushing conveyer device, by crushing the received earth and sand together with an additive that lowers the plasticity of the earth and sand, for example, earth and sand containing a large amount of cohesive soil or lumps can be modified Even in such a case, it is possible to prevent the soil and sand from adhering to each other to form a lump of soil again after being finely divided by the crushing device. Therefore, such a disintegration conveyor device, for example, when arranged in the preceding stage of the self-propelled soil improvement machine, the self-propelled soil improvement machine is supplied with low-plastic soil that has been uniformly atomized in advance. Therefore, for example, even when the soil and sand containing a large amount of cohesive soil or lumps are targeted for modification, it is possible to reliably and effectively improve the soil quality and to produce high-quality improved soil products. You can

Further, in the crushing conveyor device, by adding an additive to the soil to be modified, it is possible to prevent the sand from being splashed up by the crushing device and adhering to and growing on the inner wall of the cover. As a result, it is possible to prevent the operation of the crushing device from being stopped and to perform continuous crushing work.

Since the crushing conveyor device can reduce the plasticity of the earth and sand, in the self-propelled soil improvement machine, the earth and sand originally to be modified can be removed by a sieving device or the like. It is possible to prevent it from sticking to eyes and causing clogging. Thereby, in the self-propelled soil improvement machine, it is possible to efficiently introduce the earth and sand and to secure a high reforming efficiency.

Further, since the rotator of the disintegrator has a swingable structure, even if gravel is transported,
It is possible to prevent gravel or the like from being caught between the rotating body and the conveyor belt. As a result, it is possible to prevent an operation stop of the disintegration conveyor device due to biting, and it is possible to improve productivity by performing continuous operation.

[Brief description of drawings]

FIG. 1 is a side view showing the overall arrangement of an embodiment of a soil improvement system of the present invention.

FIG. 2 is a side view showing the overall structure of a crushing conveyor device that constitutes an embodiment of the soil improvement system of the present invention.

FIG. 3 is a top view showing the overall structure of a crushing conveyor device that constitutes an embodiment of the soil improvement system of the present invention.

FIG. 4 is a side view showing a partial cross-section of the detailed structure of the additive supply device provided in the crushing conveyor device that constitutes one embodiment of the soil improvement system of the present invention.

FIG. 5 is a top view showing the detailed structure of the additive supply device provided in the crushing conveyor device that constitutes one embodiment of the soil improvement system of the present invention.

FIG. 6 is a side sectional view showing a detailed structure of a supply unit of an additive supply device provided in a crushing conveyor device that constitutes an embodiment of a soil improvement system of the present invention.

FIG. 7 is a side view showing the detailed structure of the crushing apparatus provided in the crushing conveyor apparatus that constitutes one embodiment of the soil improvement system of the present invention.

FIG. 8 is a cross-sectional view taken along the line VIII-VIII in FIG. 7, showing the detailed structure of the crushing device provided in the crushing conveyor device that constitutes one embodiment of the soil improvement system of the present invention.

FIG. 9 is a cross-sectional view taken along the line IX-IX in FIG. 8, showing the detailed structure of the rotating body of the crushing device provided in the crushing conveyor device that constitutes one embodiment of the soil improvement system of the present invention.

FIG. 10 is a diagram for explaining relative movements of a rocking member and a cover included in the crushing device included in the crushing conveyor device that constitutes an embodiment of the soil improvement system of the present invention. is there.

FIG. 11 is a side view showing the overall configuration of a self-propelled soil improvement machine that constitutes an embodiment of the soil improvement system of the present invention.

FIG. 12 is a side view showing the overall arrangement of another embodiment of the soil improvement system of the present invention.

FIG. 13 is a side view showing the overall structure of a crushing conveyor device that constitutes another embodiment of the soil improvement system of the present invention.

FIG. 14 is a top view showing the overall structure of a crushing conveyor device that constitutes another embodiment of the soil improvement system of the present invention.

FIG. 15 is a side view showing the overall arrangement of a modification of the soil improvement system in which the crushing conveyor device is arranged in the preceding stage of the self-propelled soil improvement machine in the embodiment of the soil improvement system of the present invention.

FIG. 16 is a side view showing the overall arrangement of a modified example of the soil improvement system in which the crushing conveyor device is arranged in the preceding stage of the self-propelled soil improvement machine in another embodiment of the soil improvement system of the present invention.

FIG. 17 is a side view showing an overall configuration of a modified example in which a shredding device is additionally provided in the self-propelled soil improvement machine.

[Explanation of symbols]

100 crushing conveyor device 100A crushing conveyor device 101 body frame 102 transport conveyor 103 conveyor frame 106 conveyor belt 115 Hoppers 120 additive material supply device 150 crusher 151 support stand 152 Swing member 156 rotation axis 157 Crushing blade 165 cover 170 running body 171 truck frame 176 swivel frame 177 drive 178 power unit 200 Self-propelled soil improvement machine 200A Self-propelled soil improvement machine

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁷ identification code FI theme code (reference) E02F 7/00 E02F 7/00 D (72) Inventor Hisagi Hashimoto 2-5-1 Koraku, Bunkyo-ku, Tokyo Issue Hitachi Construction Machinery Co., Ltd. F-term (reference) 4D067 DD04 DD06 GA03 GB03 4G036 AC70 4G037 AA06 EA03 4G078 AA01 AB01 BA01 CA01 CA05 CA12 CA17 DA01 EA08 EA10

Claims (12)

[Claims] 1. A conveyer conveyor for conveying earth and sand, a main body frame for supporting the conveyer frame of the conveyer conveyor, an upstream end position of the conveyer frame for receiving the earth and sand, and a conveyer belt for the conveyer conveyor. A hopper that guides upwards, and an additive supply that supplies an additive that reduces the plasticity of the earth and sand to the earth and sand conveyed on the conveyor belt by being supported by the main body frame so as to be located on the downstream side of the conveyor belt with respect to the hopper. An apparatus, and at least one crushing device which is provided on the conveyor frame so as to be located on the downstream side of the additive material supplying device and crushes the earth and sand conveyed on the conveyor belt together with the additive material. A crushing conveyor device. 2. The crushing conveyor apparatus according to claim 1, wherein the crushing apparatus includes a rotary shaft provided substantially horizontally above the conveyor belt so as to extend in a direction substantially orthogonal to the conveyor frame, A crushing conveyor device having a plurality of crushing blades attached to a rotary shaft. 3. The crushing conveyor apparatus according to claim 2, wherein a supporting frame provided on the conveyor frame, and a rocking device that is swingably supported by the supporting frame and that rotatably holds the rotating shaft. A crushing conveyor device further comprising a moving member. 4. The crushing conveyor apparatus according to claim 3, wherein the crushing conveyor device is formed so as to be pivotally supported by the rotary shaft so as to swing with respect to the swinging member and to cover the plurality of crushing blades. A crushing conveyor device further comprising a cover. 5. The crushing conveyor device according to any one of claims 1 to 4, further comprising: a traveling body which is provided at a lower portion of the main body frame and is capable of traveling by itself. apparatus. 6. The crushing conveyor apparatus according to claim 5, further comprising a turning frame that rotatably connects the track frame of the traveling body and the main body frame. 7. The crushing conveyor apparatus according to claim 6, further comprising a drive device which is provided on the main body frame and rotates the main body frame with respect to the traveling body. . 8. The crushing conveyor apparatus according to claim 1, further comprising a power unit supported by the main body frame. 9. An additive material is supplied by an additive material supply device to the earth and sand received by a hopper and conveyed by a conveyor.
A crushing conveyor device for crushing the earth and sand and the additive material conveyed on the conveyor by at least one crusher device, and a mixture of the earth and sand and the additive material crushed by the crusher conveyor device to improve the soil quality A soil improvement system comprising: a self-propelled soil improvement machine that mixes with wood to generate improved soil. 10. A self-propelled soil conditioner that mixes the received earth and sand with a soil conditioner to generate improved soil, and the improved soil generated by this self-propelled soil conditioner is received by a hopper and is conveyed by a conveyor. A crushing conveyer device for crushing the improved soil and the additive material which are supplied on the conveying conveyor by at least one crushing device by supplying the additive material on the way of transportation Soil improvement system. 11. The earth and sand to be modified is conveyed by a conveyor, and an additive material for lowering the plasticity of the earth and sand is supplied to the earth and sand on the conveyor to convey the earth and sand conveyed on the conveyor. Characterized in that it is preliminarily crushed with the supplied additive material and supplied to a self-propelled soil improvement machine, and the previously crushed earth and sand and the additive material are mixed with the soil improvement material to generate improved soil. How to improve soil quality. 12. The soil to be modified is supplied to a self-propelled soil improving machine, mixed with a soil improving agent to produce improved soil, and the produced improved soil is conveyed by a conveyer conveyor,
An additive material that lowers the plasticity of the improved soil is supplied to the improved soil on the conveyor, and the improved soil conveyed on the conveyor is further crushed and mixed with the supplied additive material. And soil improvement method.