JP3375599B2 - Operation management method of sediment production system - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to operation management of a sand and sand product production system for producing sand and sand products such as improved soil and base materials.
Regarding the method , in more detail, even if the nature and state of the sand as the raw material is diverse, it is possible to improve the quality of the earth and sand products without increasing the industrial waste and promote the reuse of waste. it relates to operations management method of sediment product production system that can.

[0002]

2. Description of the Related Art For example, in burying gas pipes, water and sewage works, and other road and foundation works,
It is desirable to backfill the soil generated by excavation. However, when the generated soil is not suitable for backfilling (for example, when rocks, brick pieces, concrete pieces, metals, and other foreign matter are contained in large amounts, or highly viscous clay soil or weathering has progressed too much If the soil itself, such as soil, is so soft that it may cause subsidence if backfilled as it is),
For example, as described in JP-A-54-58901,
In a soil improvement plant equipped with a stationary soil improvement machine (hereinafter referred to as a stationary soil improvement plant), the soil is mixed with a soil improvement material containing lime, cement, etc. as the main component, solidified, and reused. The excavation site is being filled after improvement to the highest quality soil possible.

In such soil improvement work, for example, as shown in FIG. 8 of JP-A-9-195265,
A method using a self-propelled soil improvement machine that has mobility by allowing the soil improvement machine to run on its own has already been proposed. This self-propelled soil improvement machine has a sediment hopper that receives sediment, a mixing device that mixes the accepted sediment and the solidifying material, and a discharge conveyor that discharges (delivers) the mixture. A plurality of production processes including a receiving process in a hopper, a mixing process in the mixing device, and a discharging process in the discharging conveyor are performed.

[0004]

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention
In the prior art described in FIG. 8 of Japanese Patent No. 95265,
When the earth and sand as a raw material is put into the earth and sand hopper of the self-propelled soil improver by, for example, a hydraulic excavator, the self-propelled earth improver introduces the put sand into the mixing device and mixes it with the soil improver. Then, the mixture is discharged as a sediment product (improved soil) on the discharge conveyor. The discharged improved soil is further transported by a separately provided conveyor (secondary conveyor) and loaded on a sediment transport truck (dump truck).

In recent years, there is a growing need for soil improvement of excavated soil under the background of waste reuse promotion such as enforcement of the Recycling Resources Promotion Law (so-called recycling law) (October 1991). The nature and condition of the target soil has become extremely diverse. Therefore, the soil itself that is the raw material (for example, the residual soil generated in an urban area) that differs greatly in soil quality, such as sandy soil with high sand content and low stickiness, or clay with high stickiness, It is supposed to be included. Further, in each of them, there may be mixed ones having different water contents, and further mixed ones in which clay-like soil is compressed into a lump.

On the other hand, under the background of promoting the reuse of waste as described above, there is an increasing need for quality improvement of improved soil, which is a sand and sand product. Improved soil (for example, with a grain size within a predetermined range) is required.

However, the above-mentioned Japanese Patent Laid-Open No. 9-19526
When attempting to improve the soil quality by using only the self-propelled soil improvement machine as in the prior art shown in FIG. 8 of Japanese Patent No. 5 publication, the self-propelled soil improvement machine is limited because of the space for mounting the equipment. May not always be sufficient to meet the recent trends described above. Therefore, when various kinds of earth and sand are thrown into the hopper as described above, the quality of the improved soil discharged by the discharge conveyor (primary conveyor) is not always sufficient to meet the above high quality needs. there is a possibility. As an example of quality needs,
As the standard of the particle size distribution of backfill materials, which the government side defines, there are 13 mm or less in Tokyo, 25 mm or less in Aichi prefecture, 20 mm or less in Osaka prefecture, etc., but when performing soil improvement work only with a self-propelled soil improvement machine, improvement The soil may have a particle size distribution in which many particles exceeding the upper limit of particle size are mixed, and the standard may not be satisfied. In such cases,
Those that do not meet the required quality will be directly disposed of as industrial waste, leading to an increase in the amount of waste,
This is against the momentum of promoting waste reuse.

[0008] In the above-mentioned prior art, a sieve means is further provided above the earth and sand hopper for selecting earth and sand based on the particle size and supplying the earth and sand hopper with a screening step of the screening means prior to the receiving step. However, this sieving means is mainly intended to remove foreign matters, and does not substantially contribute to the above quality improvement.

As described above, the above-mentioned Japanese Patent Laid-Open No. 9-19
In the method of improving the soil quality by using only the self-propelled soil quality improver as in the prior art shown in FIG. 8 of Japanese Patent No. 5265, when the nature and the state of the earth and sand as the raw material are various, the industrial waste is discarded. It was difficult to improve the quality of earth and sand products without increasing the amount of waste, and it was not possible to promote the reuse of waste. By the way, from the viewpoints of diversification of raw materials, improvement of product quality, and reduction of waste utilization based on the above-mentioned promotion of waste reuse, the above-mentioned JP-A-54-58 is used.
In a stationary soil improvement plant such as Japanese Patent No. 901 publication, a stationary pretreatment facility for performing pretreatment such as classification, crushing, and crushing of the earth and sand as a raw material prior to the soil improving process in the stationary soil improving machine. It is also conceivable to install a separate post-treatment facility for adding additional post-treatment such as classification, crushing, and crushing to the soil that has undergone the soil improvement process with the above-mentioned stationary soil improvement machine. To be

However, in this case, the following new problems occur.

In general, a stationary soil improvement plant needs to have a stockyard for stocking a large amount of earth and sand as a raw material in order to stabilize the operation of the soil improvement machine. Will be required, and plant installation costs including land acquisition costs will tend to be high.

However, since the sediment to be improved mainly occurs in public works, seasonal changes are large due to its nature, and a relatively large amount of sediment is brought in in the winter and early spring (especially concentrated at the end of the year and the end of the year) and fully operated. However, in the summer, the amount of earth and sand is extremely small, and it is difficult to secure the operating amount throughout the year. In addition, the stationary soil improvement plant
It is preferable to install it at a position as close as possible to the place where the sediment that becomes the raw material is constantly generated (for example, urban area and densely populated area), but it is difficult to enter and leave the sediment transport truck and to remove mud (tire marks) on public roads. Considering the possibility of complaints from local residents due to the occurrence, it is unavoidable to construct it in the suburbs. Therefore, the transportation distance from the sediment generation site (actual construction site) to the stationary soil improvement plant becomes longer and the construction cost increases due to an increase in truck transportation cost, etc. In some cases, purchasing the soil (improved soil) may result in cost savings, and the amount of soil commensurate with the processing capacity cannot be collected, further lowering the operating rate. That is, the plant constructed at a high cost may be left idle without being fully operated, which is uneconomical.

In the above description, the soil improvement work in which the improved soil improved in poor soil quality is a sediment product has been described as an example. However, the above-mentioned method provided in the stationary soil improvement plant or the self-propelled soil improvement machine is described above. It has already been carried out using the functions of the mixing device and the solidifying material supply device to manufacture the base material (also called roadbed material for roads) of, for example, paved roads and dikes (including diversion dike). As an example, JP-A-11-269
867).

In the production of this base material, in addition to earth and sand (for example, residual soil) as a raw material, a particle size adjusting material and an aggregate are also supplied into the earth and sand hopper, and they are mixed with a solidifying material by a mixing device to obtain the earth and sand. The base material as a product will be produced.

This base material manufacturing work also has the same problems as the soil improvement work described above. That is, in the method of manufacturing the base material using only the self-propelled earth and sand product production machine (in this case, the self-propelled base material manufacturing machine), when the nature and state of the earth and sand as the raw material are various, It is difficult to improve the quality of the base material, which is a sediment product, without causing an increase in industrial waste, and it is not possible to promote the reuse of waste. Further, even if a sand and sand product production plant (in this case, a base material production plant) is constructed at a high cost, it may not operate sufficiently and may be idle, which is uneconomical.

[0016] A first object of the present invention is to improve the quality of earth and sand products without increasing the amount of industrial waste and to recycle the waste even if the nature and state of the earth and sand as a raw material are various. it is to provide a sediment product production systems luck <br/> for management method that can promote use.

A second object of the present invention is to provide an operation management method for a sediment product production system which can improve the operation rate of the sediment product production plant and improve the economical efficiency.

[0018]

[0019]

[0020]

[0021]

[0022]

[0023]

[0024]

[0025]

[0026]

[0027]

Means for Solving the Problems] (1) the first and second
In order to achieve the above object, the operation management method of the earth and sand product production system of the present invention includes a earth and sand hopper that receives earth and sand, a mixing device that mixes a solidifying material with the received earth and sand, and a discharge that discharges the mixed earth and sand. Having a conveyor, a non-stationary earth and sand product production machine that performs a plurality of production steps including a receiving step in the earth and sand hopper, a mixing step in the mixing device, and a discharging step in the discharging conveyor, the plurality of Prior to the production process, at the time of operating the stationary first pretreatment facility that performs at least one pretreatment of the classification, crushing, crushing, and additive addition of earth and sand outside the earth and sand product production machine,
It is arranged in the earth and sand product production plant provided with the first pretreatment equipment, and the earth and sand product production is performed in cooperation with the first pretreatment equipment, and when the first pretreatment equipment is not operating, Transport the product to the outside of the sand and sand production plant, and let the sand and sand product be produced independently.

The nature and condition of the earth and sand as the raw material are various
At one time, only non-stationary sediment production machines are used
When trying to produce a product, the equipment installation space is limited
Performance of non-stationary earth and sand product production machines
Quality is not always sufficient, get a high quality sediment product
Cannot be obtained or leads to an increase in the amount of waste to obtain.
There is a possibility. In the present invention, the stationary type first pretreatment
At the time of operation of the scientific equipment, in the non-stationary earth and sand product production machine
Multiple production processes such as receiving process, mixing process, discharge process, etc.
Prior to the
To classify, disintegrate, crush, and add additives to the raw material
Pre-processing such as addition should be performed. This allows
Stationary earth and sand product production machines have already been pretreated
Because the sand and sand products will be produced based on
Produce high quality earth and sand products even when not sufficient
And increase the amount of waste at that time.
Not at all. Therefore, promote the reuse of waste
You can However, at this time, due to seasonal changes in public works,
Due to the locational conditions of the sediment production plant where stationary pretreatment equipment is installed, fluctuations in the amount of sediment that is the raw material brought into the plant cannot be avoided.

On the other hand, there is a tendency that the quality of earth and sand products is desired from the background of promotion of waste reuse, but not all such tendency, and there are cases where earth and sand products of not so high quality are sufficient.

Therefore, in the present invention, when the first pretreatment facility cannot be operated because the raw material earth and sand is not brought into the earth and sand product production plant, the non-stationary earth and sand product production machine is operated outside the earth and sand product production plant. Transport it to the sand and sand product production machine so that the sand and sand product production machine alone can produce not so high quality sand and sand products. As a result, the non-stationary earth and sand product production machine can be operated even when the pretreatment facility cannot be operated, and therefore the operation rate can be improved by that amount when viewed from the entire system. Therefore, economic efficiency can be improved.

( 2 ) In order to achieve the first and second objects, the operation management method of the earth and sand product production system of the present invention is a earth and sand hopper that receives earth and sand, and a solidifying material is mixed with the earth and sand that has been received. It has a mixing device and a discharge conveyor for discharging the mixed sediment, and performs a plurality of production steps including a receiving step in the sediment hopper, a mixing step in the mixing device, and a discharging step in the discharge conveyor. The non-stationary earth and sand product producing machine performs at least one post-treatment of classification, crushing, crushing, and additive addition on the earth and sand discharged outside the earth and sand product producing machine in the discharging step. At the time of operation of the stationary type post-treatment equipment to be performed outside the machine, the equipment is placed in the earth and sand product production plant where the post-treatment equipment is provided, and the earth and sand products are produced in cooperation with the post-treatment equipment. During non-operation of the treatment facility, and transported to the sediment product production plant outside alone to perform the sediment product production.

Similarly to the above ( 1 ), in the present invention, when the post-treatment equipment cannot be operated because the earth and sand as a raw material is not brought into the earth and sand product production plant, the non-stationary earth and sand product production machine is used. Transport it outside the production plant so that the sand and sand product production machine can perform production independently. As a result, even when the post-treatment equipment cannot be operated, the non-stationary earth and sand product production machine can be operated, and the system operation rate can be improved accordingly.
Economic efficiency can be improved.

[0033]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a system configuration diagram showing the overall arrangement of an embodiment of the earth and sand product production system of the present invention. This embodiment is an embodiment in which the present invention is applied to a soil improvement system for improving the soil quality of construction-generated soil.

In FIG. 1, construction soil (excavation soil, etc.) generated at, for example, a construction site or an excavation site is carried by a truck (dump truck) T1 into a soil improvement plant, which is a sediment production plant. It is piled up in the remaining soil storage area (with or without a roof) P in the plant. The earth and sand product production system according to the present embodiment is installed in a plant to improve the soil quality of the earth and sand, and a plurality of conveyors are provided in order to improve the earth and sand passage efficiency and the earth and sand treatment amount in each facility and equipment. Also, it has a configuration in which a plurality of sieving devices and the like are combined in multiple stages.

That is, this earth and sand product production system is
A sand loading machine (loading machine) for loading the sand, for example, a wheel loader 100 (alternatively, a hydraulic excavator may be used), a conveyor 110 for receiving and transporting the soil loaded by the wheel loader 100 by a sand hopper 111, and this conveyor A primary sieving device 120 that introduces the sand and sand conveyed in 110 and sorts it according to its particle size, and a conveyer 130 that introduces and conveys the substances that have been sorted by this primary sieving device 120 (passed through a screen described below).
And a secondary sieving device 140 that introduces the earth and sand conveyed by this conveyor 130 and sorts it according to its particle size, and a secondary sieving device 140 that has been sorted by this secondary sieving device 140 (passed through a screen described below). A conveyer 150 to be conveyed, a crusher (crusher) 160 to introduce and crush what was not sorted by the secondary sieving device 140 (which did not pass through a screen described later), and the earth and sand conveyed by the conveyor 150. Introduce and convey the conveyor 170 and the magnetic separator 171 provided on the top of the conveyor 170, and introduce the earth and sand conveyed by the conveyor 170,
Introducing the self-propelled soil improvement machine 200 as a non-stationary earth and sand product production machine that mixes and disintegrates with soil improvement material (solidifying material) to generate (produce) improved soil with improved soil quality, and the improved soil And a finishing sieving device 180 that selects according to the particle size
A conveyor 190 for introducing and transporting the improved soil (passed through a screen described later) selected by the finishing sieving apparatus 180 to pile up the improved soil on the improved soil yard R, and the finishing sieving apparatus 18 described above.
The conveyor 210 that introduces the unsorted items (not passed through the screen described later) with 0 and conveys them to the waste storage place (not shown), and the improved soil in the improved soil storage place R is loaded into the truck (dump truck) T2. It has a sediment loading machine (loading machine) 220, for example, a wheel loader.

The above-mentioned wheel loader 100 is one that is generally used at a normal construction site, and the front wheels 10
1 and rear wheel 102, and these front and rear wheels 101, 102
A front frame 104 and a rear frame 105 which are driven by the vehicle, a bucket 103 provided on the front frame 104, and a driver's seat 106 provided on the rear frame 105, and the front frame 104 and the rear frame 105 are bent. The steering (changing the traveling direction) is performed by.

The conveyor 110 is a so-called belt conveyor (may be an apron feeder), and although not shown in detail, for example, a frame, drive wheels and idler wheels supported by the frame, the drive Motors that drive the wheels (eg electric motors or hydraulic motors),
And a conveyor belt or the like wound around the driving wheel and the driven wheel. By circulating the conveyor belt, the earth and sand introduced onto the conveyor belt can be conveyed. ing.

At this time, although not shown in detail, the earth and sand hopper 111 has, for example, a bottomless box shape with openings at the top and bottom, and the conveyor 110 out of the four side walls.
In the side wall located on the downstream side in the feeding direction, a sand supply opening (gate) having a predetermined height and a widthwise dimension slightly smaller than the width of the conveyor belt is formed. This allows
When the earth and sand hopper 111 drops the earth and sand input through the upper opening (see arrow A) onto the conveyor belt of the conveyor 110 and conveys it to the downstream side, the input earth and sand conveyed on the conveyor belt. Of the above, those that have passed through the sediment supply opening (= the amount of the height of the supply opening)
Only this is led out (cut out) from the earth and sand hopper 111. As a result, a predetermined amount of earth and sand determined by the conveying speed of the conveyor belt on the conveyor 110 and the opening area of the earth and sand supply opening is supplied to the primary sieving device 120 (quantitative supply function). .

The above-mentioned primary sieving device 120 is provided with a vibrating so-called vibrating screen (or may be a fixed screen) which can vibrate, and although detailed illustration is omitted, for example, a frame and a spring are attached to this frame. An elastically supported support frame and a lattice member (screen) attached to this support frame
And a vibrating motor (electric motor or hydraulic motor) that generates a rotational driving force. The rotational driving force of the vibrating motor is converted into a swing motion of the support frame and the screen through a known conversion mechanism. Convert. As a result, of the various sizes of components contained in the sand put into the screen (see arrow a), those larger than the screen grid size (grid grid) (overrun) are being loosened (crushing process) Discharge by moving and flowing down on a slanted screen (see arrow c)
On the other hand, while only loosening the screen size (undersize) or less (crushing process), the screen is dropped from between the grids for sorting (classification process). As a result, large lumps contained in the earth and sand are removed.

The conveyor 130 has substantially the same structure as the above-mentioned conveyor 110, and includes a frame, driving wheels, driven wheels, a motor, a conveyor belt, and the like. Next sieving device 12
The earth and sand introduced onto the conveyor belt from 0 (see arrow D) are conveyed. The conveyor 15
Since 0, 170, 190, and 210 have almost the same structure, the description of the structure will be omitted as appropriate.

The secondary sieving device 140 has a structure similar to that of the above-mentioned primary sieving device 120 and has a similar classification function. (However, the larger size (smaller than the grid size of the primary sieving device 120) is discharged while loosening (see arrow F), while only the size smaller than the grid size (under size) is loosened and downward from the space between the grids. Then, as a result, what is dropped and sorted (see arrow key) is adjusted so that only gravel of a predetermined size is left.

The conveyor 150 is adapted to convey the earth and sand introduced on the conveyor belt from the secondary sieving device 120 (see arrow keys). At this time, the crushing device 160 introduces the oversized portion indicated by the arrow C to crush it into a predetermined size, and crush the earth and sand to the conveyor 1
50 is also introduced (see arrow C). The crushing device 160 is, for example, a rotary crushing device such as a 6-axis crusher including a so-called roll crusher,
Although detailed illustration is omitted, a pair of roll-shaped rotating bodies (crushing rotors) equipped with crushing blades are provided, the pair of rotating bodies are rotated in opposite directions, and earth and sand are introduced between the rotating bodies. It is designed to be crushed by sandwiching.

The conveyor 170 is the conveyor 1
Sediment introduced on the conveyor belt from 50 (see arrow mark)
Is designed to be transported. At this time, the magnetic separator 171 provided in the upper portion magnetically attracts and removes the magnetic substance contained in the transported earth and sand. The magnetic separator 171 is not shown in detail, but for example, a magnetic separator belt arranged above the conveyor belt of the conveyor 170 so as to be substantially orthogonal to the conveyor belt is a motor (electric motor or hydraulic motor). By magnetic force generating means (coil in this example)
By driving around 171a, the magnetic force from the magnetic force generation means acts over the magnetic separator belt to attract the magnetic substance on the conveyor belt to the magnetic separator belt (see arrow U).
After that, it is designed to be dropped to the side of the conveyor belt and discharged. As a result, metal-based foreign matters such as empty cans, reinforcing bars, and nails contained in the earth and sand are removed.

In the series of pretreatment steps described above, including the classification and crushing treatments by the screening of the sieving devices 120 and 140, the crushing treatment by the crushing device 160, and the metal removing treatment by the magnetic separator 171, finally self-propelled. Type soil improvement machine 20
The maximum particle size of the input sand is adjusted and the lumps of sand are loosened, resulting in relatively good quality sand (remaining soil).

The soil improvement machine 200 is a self-propelled soil improvement machine known as this type. FIG. 2 is a side view showing the detailed structure of the self-propelled soil improvement machine 200.

2 and 1, in the self-propelled soil improvement machine 200, the earth and sand to be improved is put in by the conveyor 170 (see an arrow mark in FIG. 1, at this time, by the cutting function by the earth and sand hopper 111). The soil and sand are sorted to a specified particle size (details will be described later).
Sieve unit 1, earth and sand hopper 2 that receives and temporarily stores the earth and sand selected by the sieve unit 1, and the earth and sand introduced from the earth and sand hopper 2 is mixed with a predetermined soil improvement material (solidifying material) Mixing device (processing tank) 3 for discharging to
A soil-improving machine main body 6 equipped with a carry-in conveyor 4 for transporting and introducing the earth and sand received in the earth-and-sand hopper 2 to the mixing device 3, and a soil-improving material supply device 5 for supplying the soil-improving material, The rear side of the self-propelled soil improvement machine 200 by receiving the traveling body 7 provided below the soil improvement machine main body 6 and the mixture mixed by the mixing device 3 and discharged downward (main body frame soil improvement machine installation described later). A discharge conveyor 8 that carries and discharges (carries out) the other side of the portion 9A in the longitudinal direction, that is, the right side in FIG.

The running body 7 is provided with a main body frame 9 and left and right endless track tracks 10. Body frame 9
Is a chassis that is formed of, for example, a substantially rectangular frame and has the sieve unit 1, the earth and sand hopper 2, the mixing device 3, the soil improvement material supply device 5, and a power unit (machine room) 79 described later, etc. The soil improvement machine mounting portion 9A constituting the track frame portion 9B for connecting the soil improvement machine mounting portion 9A and the left / right endless track crawler track 10 described above.
Composed of and. Further, the crawler track 10 includes a drive wheel 11 rotatably supported by the track frame portion 9B.
And it is hung between the driven wheel (idler) 12,
Left / right traveling hydraulic motor 13 provided on the drive wheel 11 side
The self-propelled soil improvement machine 200 is caused to travel by being given a driving force by.

The above-mentioned sieve unit 1 is a so-called vibrating sieve which can be vibrated including vertical vibration, and is supported by a support member 15 provided on a support post 14 standing upright on the body frame soil improvement machine mounting portion 9A. , A support frame 17 elastically supported via a spring 16, a lattice member (screen, not shown) attached to the support frame 17, and a vibrating shaft (not shown) of the screen inside. And a vibrating hydraulic motor (not shown) for generating a driving force for rotationally driving a rotary drum (not shown) inserted in the. Then, the driving force of the hydraulic motor for vibration is transmitted to the rotary drum to be rotated, and the vibration shaft of the screen is vibrated to vibrate the screen and the support frame 17 in the vertical direction.

The carry-in conveyor 4 stands up obliquely from one side in the longitudinal direction of the body frame soil improvement machine mounting portion 9A toward the other side (toward the rear of the self-propelled soil improvement machine 200) by a predetermined angle. It is installed so as to be inclined. And this carry-in conveyor 4 is a frame 2
2 and a conveyor belt 2 wound around a drive wheel 23 and a driven wheel (idler) 24 supported by the frame 22 and driven by a hydraulic motor for a carry-in conveyor (not shown).
5, a roller (carrier roller) 26 for supporting the transport surface of the transport belt 25, and the transport belt 25.
The restriction plates 27 are provided on the left and right sides in the width direction at the downstream end of the conveyance surface of the.

The earth and sand hopper 2 has an upper end fixed to the support member 15, and a lower end inclined at an angle corresponding to the inclination angle of the carry-in conveyor 4. Further, this earth and sand hopper 2 has a bottomless box shape (in other words, a substantially rectangular tube shape or a frame shape) in which the diameter is increased upward for the convenience of smoothly inserting the earth and sand from the sieve unit 1. It is open at the top and bottom.

At this time, among the four side walls (not shown) forming the frame of the earth and sand hopper 2, a side wall (not shown) located on the downstream side in the feeding direction of the carry-in conveyor 4 has a high height. Is substantially the same as the height of the regulation plate 27 and the widthwise dimension is the conveyor belt 25 of the carry-in conveyor 4.
An opening (gate) for supplying earth and sand (not shown), which is slightly smaller than the width of, is formed. Then, the earth and sand hopper 2 drops the earth and sand introduced through the upper opening from the sieve unit 1 onto the conveyor belt 25 of the carry-in conveyor 4 and conveys it to the downstream side, at which time the conveyor belt 25 is conveyed. Of the input earth and sand being conveyed, only the one that has passed through the supply opening (= the amount corresponding to the height of the supply opening) is led out of the earth and sand hopper 2 (pulled out) and guided to the mixing device 3. . As a result, a predetermined amount of earth and sand (preliminarily set so as not to overflow the earth and sand hopper 2) determined by the conveyance speed of the conveyor belt 25 in the carry-in conveyor 4 and the opening area of the earth and sand supply opening is The hopper 2 supplies the mixing device 3.

The soil improvement material supply device 5 is provided with four (or three) columns 32 standing on the body frame soil improvement machine mounting portion 9A, and has, for example, a substantially rectangular base plate 3.
It is supported by 3. At this time, the carry-in conveyor 4
Has its downstream end portion extended to between the columns 32, 32, and in such a positional relationship, by the soil improvement material supply device 5 located immediately above the downstream end portion of the carry-in conveyor 4, A predetermined amount of soil improvement material is added to the earth and sand supplied from the earth and sand hopper 2 on the carry-in conveyor 4.

The soil improvement material supply device 5 is connected to a storage tank (solidifying material hopper) 34 for storing a predetermined amount of the soil improvement material, and is connected to the lower portion of the storage tank 34 to supply the soil improvement material in predetermined amounts. And a feeder 35. In addition, as the soil improvement material, a material suitable for the soil to be improved is appropriately selected, and for example, lime is used.

The storage tank 34 has a substantially cylindrical shape as a whole and has a space for storing the soil improvement material therein, and its height dimension is variable (details will be described later). That is, in the storage tank 34, the lower side is installed on the base plate 33, and a bottomed cylindrical lower tank portion 36,
It is composed of a top plate portion 37, and a bellows portion 38 provided between the lower tank portion 36 and the top plate portion 37 and serving as an upper tank portion having a variable upper volume.

Bottom plate of the lower tank portion 36 (not shown)
Is provided with a soil improvement agent supply opening having a predetermined opening diameter, and the soil improvement agent is supplied to the feeder 35 from this opening.

The feeder 35 is a so-called rotary feeder, and inside thereof, a rotor (not shown) which is rotationally driven by a feeder motor (not shown) is provided. This rotor is provided with a plurality of partition walls (not shown) in a radial pattern, and every time the rotor rotates by a predetermined angle, the soil improvement material corresponding to the space between the adjacent partition walls is separated, and the space The soil improvement material for the volume is supplied quantitatively. Thus, by controlling the rotation speed of the feeder motor, the supply amount (addition rate) of the soil improvement agent can be controlled, and the mixing ratio of the soil and the soil improvement agent can be accurately made constant. . Specifically, for example, the amount of sediment carried by the carry-in conveyor 4 is detected by a detection means (not shown) (or the amount of sediment-soil conditioner mixture by the discharge conveyor 8 is detected to indirectly detect the amount of earth-sand carried by the carry-in conveyor 4). The conveyance amount may be detected), and the feeder hydraulic motor is drive-controlled according to the detected amount. The storage tank 34 is divided into upper and lower parts, and the bellows part 38 is provided on the upper side in order to increase the storage amount of the soil improvement material in the storage tank 34 and to make the entire self-propelled soil improvement machine 200 trailer. This is to reduce the height dimension when it is transported by, for example.

That is, the support rods 58 are vertically provided on the mounting plate 57 provided on the top plate portion 37, and the guide cylinders 59 are erected at the positions corresponding to the vertical positions of the support rods 58 of the base plate 33. It is set up. When the stopper pin (not shown) is inserted with the insertion hole 60 provided below the support rod 58 aligned with the pin insertion hole 61 provided in the guide cylinder 59, the bellows portion 38 is expanded. When the stopper pin is inserted while the pin insertion hole 60 provided above the support rod 58 is held in the operating state (the state shown in FIG. 2) and the stopper pin is inserted, the bellows portion 38 is held in the retracted state. It has become so.

The mixing device 3 comprises a mixing device main body 6 which is a rectangular container arranged in the longitudinal direction (= approximately horizontal direction).
2, and is provided on the upper front side of the mixing device body 62,
An inlet (not shown) for introducing the earth and sand from the carry-in conveyor 4 and the soil improver from the soil improver supply device 5;
A discharge port (not shown) provided at the lower rear side of the mixing device body 62, and an even number (for example, two) paddle mixers (not shown) provided in the mixing device body 62 in parallel with each other. , And a mixing hydraulic motor 72 that generates a driving force.

The paddle mixer is a rotary shaft (not shown).
In this structure, a large number of blades (paddles, not shown) as stirring / transferring members are provided intermittently (for example, every 90 ° in the circumferential direction and every predetermined pitch in the axial direction). , A mixing hydraulic motor 72 via a transmission gear (not shown)
Is connected to the output shaft of. Then, by driving the mixing hydraulic motor 72, both rotary shafts of the paddle mixer are simultaneously and rotationally driven in opposite directions (so that the opposite sides of both rotary shafts rotate upward), and both are driven via the introduction port. The earth and sand and the soil improvement agent introduced in the central part between the paddle mixers are transferred toward the discharge port while stirring, and during the transfer, the mixture is crushed (coarse crushing) and uniformly mixed,
It is designed to produce improved soil. The improved soil produced in this way is discharged from the discharge port onto the discharge conveyor 8 by the action of its own weight.

The discharge conveyor 8 has a frame 80.
And a belt 75 wound between a driving wheel 74 and a driven wheel (idler, not shown) supported by the frame 80 and driven by a hydraulic motor (not shown) for the discharge conveyor. And a roller (carrier roller) 81 for supporting the conveyance surface of the belt 75,
By circulating the belt 75, the mixing device 3
The mixture (improved soil) that has fallen onto the belt 75 from above is conveyed and is introduced into the finishing sieving apparatus 180 (see FIG. 1).

Here, the sieve unit 1, the carry-in conveyer 4, the mixing device 3, the discharge conveyer 8, and the crawler track 1
0 is driven by a power source provided in the self-propelled soil improvement machine 200, that is, power from an engine (not shown) as a prime mover and at least one hydraulic pump (not shown) driven by the engine. It The pressure oil from the hydraulic pump is passed through a control valve device (not shown) equipped with a control valve for controlling the direction and flow rate of the pressure oil, the sieve unit 1, the carry-in conveyor 4, the mixing device 3, and the discharge conveyor. 8 and the crawler track 10 to the vibration hydraulic motor, the carry-in conveyor hydraulic motor, the mixing hydraulic motor 72, the discharge conveyor hydraulic motor, and the left / right traveling hydraulic motor 13, respectively. And the corresponding hydraulic motor is driven to rotate.

In the engine, hydraulic pump, and control valve device, the power unit 79 is mounted on the other end of the main body frame soil improvement device mounting portion 9A in the longitudinal direction via the power unit mounting member 78.
It is provided inside.

The self-propelled soil improvement machine 200 is shown in FIG.
Although not clearly shown in Fig. 1, it is arranged at the exit portion of this plant, and a traveling area sufficient for self-propelling when traveling to another operation site described later is secured in advance.
In the self-propelled soil improvement machine 200 of the said structure, when the earth and sand are thrown into the said sieve unit 1 from the said conveyor 170, this sieve unit 1 will sort the introduced earth and sand according to the particle size (sorting process), and will be sorted. The deposited sediment component is introduced into the sediment hopper 2 below and received (accepting step). The earth and sand received by the earth and sand hopper 2 is placed on the conveyor belt 25 of the carry-in conveyor 4 below the earth and sand hopper 2 and conveyed toward the rear of the self-propelled soil improvement machine. Then, in the vicinity of the downstream end of the carry-in conveyor 4 in the transport direction, a predetermined amount of the soil improving agent is added to the surface of the transported earth and sand from the soil improving agent supplying device 5 (solidifying agent supplying step), and the mixture thereof is mixed. Device 3
Will be introduced to. The earth and sand and the soil conditioner introduced into the mixing device 3 are uniformly agitated and mixed by the paddle mixer in the main body 62 of the mixing device to be improved soil and discharged onto the belt 75 of the carry-out conveyor 8 (mixing step). Then, the improved soil is further transported to the rear of the self-propelled soil improvement machine by the carry-out conveyor 8 and finally discharged (delivered) from the rear part of the self-propelled soil improvement machine (discharging step).

Returning to FIG. 1, the above-mentioned finishing sieving apparatus 180
Is the above-mentioned primary sieving apparatus 140 and secondary sieving apparatus 140.
It has a similar classifying function with the same structure as the above, and among the earth and sand put into the screen from the self-propelled soil improvement machine 200 (see arrow Si), the grid size (however, the grid size of the secondary sieving device 140 is (Smaller than) a larger one (over) is discharged to the conveyor 210 (see arrow S), while only a smaller size (under) is dropped and dropped from between the lattices (arrow) (See C), and the final product (improved soil) is adjusted to the required grain size (required by the user as the specifications of the product).

The conveyor 190 introduces the earth and sand products finally adjusted as described above onto the conveyor belt and conveys them, and piles them up on a predetermined improved soil yard R (see arrow S).
It is like this. Piled earth and sand products (improved soil)
Are loaded onto a truck (dump truck) T2 by a wheel loader 220 having the same structure as the above-mentioned wheel loader 110, and are carried to the user's site.

Among the facilities and equipment constituting the system described above, other than the wheel loaders 100 and 220 and the self-propelled soil improvement machine 200, that is, the conveyor 11
0, 130, 150, 170, 190, 210, the sieving devices 120, 140, 180, the crushing device 160, and the magnetic separator 171 are all stationary.

In the above, the self-propelled soil improvement machine 2
00 constitutes the non-stationary type earth and sand product producing machine according to each claim, and the sorting step in the self-propelled soil improvement machine 200 in the sieve unit, the receiving step in the earth and sand hopper 2, the soil quality The solidifying material supplying step by the improving material supplying device 5, the mixing step by the mixing device 3, and the discharging step by the discharging conveyor 8 correspond to a plurality of production steps.

Further, the conveyors 110, 130, 150,
170, the sieving devices 120 and 140, the crushing device 160, and the magnetic separator 171 perform classification, crushing, and pretreatment of crushing and crushing as raw materials outside the sand and sand product manufacturing machine prior to a plurality of production processes. A stationary first pretreatment facility is constructed. Further, the finishing sieving device 180 and the conveyors 190, 210
However, a stationary post-treatment facility for performing post-classification and disintegration post-treatment on the earth and sand discharged outside the earth and sand product production machine in the earth and sand product production machine during the discharge step of the earth and sand product production machine is configured.

The operation of the earth and sand product production system of the present embodiment having the above-mentioned configuration will be described below in order.

(I-1) Promotion of Waste Reuse (I-1A) Action by Pretreatment Generally, the self-propelled soil improvement machine mixes the earth and sand hopper for receiving the earth and sand and the received earth and sand and the solidifying material. It has a mixing device and a discharge conveyor for discharging (carrying out) the mixture, and by performing the receiving step in the earth and sand hopper, the mixing step in the mixing device, the discharging step in the discharge conveyor, etc. However, it has become possible to improve the soil quality of the soil to be improved and produce improved soil, which is a sediment product.

However, when the sand and sand as the raw material (sand to be improved) have a wide variety of properties and states, and when the sand and sand products are produced using only the self-propelled soil improvement machine, the equipment mounting space is limited. If the performance of the self-propelled soil improvement machine is not always sufficient for some reason, it may not be possible to obtain a high-quality earth and sand product, or in order to obtain it, the amount of waste may increase.

Therefore, in the above embodiment of the earth and sand product production system of the present invention, prior to the steps such as the receiving step, the mixing step, the discharging step, etc. in the self-propelled soil improvement machine 200, a stationary type is provided separately. Processing equipment (conveyor 11
0,130,150,170, sieving device 120,14
0, the crushing device 160, and the magnetic separator 171) in advance.
Pretreatment such as classification, crushing, and crushing of the earth and sand as the raw material is performed. As a result, the self-propelled soil improvement machine 200
Since the pretreatment has already been performed and the maximum grain size has been adjusted as described above and the soil mass has also been loosened, it will produce improved soil that is a sediment product based on relatively good soil material (remaining soil), Even if the performance is not always sufficient, it is possible to produce a high-quality earth and sand product, and the waste at that time (one discharged by the conveyor 210 and one
It does not increase the amount of the secondary sieving device 120, etc.). Therefore, the reuse of waste can be promoted.

(I-1B) Action by post-treatment In one embodiment of the earth and sand product production system of the present invention, the earth and sand discharged outside the machine in the discharge process of the self-propelled soil improvement machine 200 The stationary finishing sieving device 180 and the conveyor 210, which are separately provided, classify the sand and perform post-treatment of crushing. As a result, similarly to the above (I-1A), even if the performance of the self-propelled soil improvement machine 200 is not always sufficient (for example, the way of improving the particle size distribution of the improved soil is insufficient), it is treated by the subsequent treatment. It can be supplemented and finally made into a sediment product (improved soil) adjusted to the required grain size. Therefore, since it is possible to produce a high-quality earth and sand product without increasing the amount of waste, it is possible to promote the reuse of waste.

(I-2) Improvement of economic efficiency by improving plant operation rate As described in (I-1A) and (I-1B) above,
In addition to the self-propelled soil improvement machine 200, stationary pretreatment equipment (conveyor 110,
130, 150, 170 etc.) and post-treatment equipment (finish sieving device 180 etc.) for post-treating the earth and sand discharged outside the machine in the discharge process to configure the earth and sand product production system, and thereby the raw material Even if the nature and condition of the sediments are various, it is possible to improve the quality of the sediment products without increasing the amount of industrial waste and promote the reuse of waste.
However, at this time, seasonal fluctuations in the occurrence of public works and the stationary pretreatment equipment (conveyors 110, 130, 150, 1
70 etc.) and the post-treatment equipment (finishing sieving device 180 etc.), it is inevitable that the amount of earth and sand as a raw material brought into the plant will change due to the locational conditions of the earth and sand product production plant.

On the other hand, from the background of promoting the reuse of waste, there is a tendency that the quality of earth and sand products (improved soil in this example) is desired, but this is not the case in all, and the earth and sand products are not so high quality. In some cases it may be sufficient.

Therefore, in the present embodiment, the pretreatment equipment (conveyors 110, 130, 150, 170, etc.) and the posttreatment equipment (finishing sieving equipment 180, etc.) are used because the raw material earth and sand are not brought into the plant. 1 cannot operate, the self-propelled soil improvement machine 200 is operated at another operation site outside the plant (the self-propelled soil improvement machine 200 alone is not so high quality as shown by the two-dot chain line in FIG. (Improved soil) Transport it to the production site, for example, the customer's soil site near the construction site, and use it there.

FIG. 3 is a diagram showing a working state of an example of soil improvement work performed by using the self-propelled soil improvement machine 200 at such another operation site. In FIG. 3, construction soil (excavation soil, etc.) generated at, for example, a construction work site or an excavation work site is carried into the operation site by a truck (dump truck) TA, and a known hydraulic excavator E is used from the truck TA. The self-propelled soil improvement machine 200
(More specifically to the sieve unit 1). In the self-propelled soil improvement machine 200, as described above, the sieve unit 1 sorts the input sand according to its particle size (sorting step), and the sorted sediment component is received by the sediment hopper 2 below (receiving step). ), And it is conveyed toward the rear of the self-propelled soil improvement machine by the carry-in conveyor 4 therebelow. Then, a predetermined amount of the soil conditioner is added to the surface of the transported earth and sand from the soil conditioner supplying device 5 (solidifying material supplying step), and the mixture is introduced into the mixing device 3 and uniformly stirred and mixed by the paddle mixer. It becomes improved soil as a sand and sand product (mixing step), and is further transported and discharged (removed) to the rear of the self-propelled soil improvement machine by the discharge conveyor 8 (discharge step), and piled up in a predetermined improved soil storage area R '. . The piled earth and sand products (improved soil) are loaded on the truck (dump truck) TB by the wheel loader H and transported to the user's site. The self-propelled soil improvement machine 200 may be returned to the original plant shown in FIG. 1 again when the remaining soil to be improved carried by the truck TA is exhausted, or moved to another operation site. Then, you may continue to work on the improvement work.

As described above, in one embodiment of the earth and sand product production system of the present invention shown in FIG.
The above pretreatment equipment (conveyors 110, 130, 150, 1
70 etc.) and aftertreatment equipment (finish sieving device 180 etc.) cannot operate at least self-propelled soil improvement machine 200
Since it can be operated at other operating sites, the operating rate can be improved by that amount when viewed from the whole system. Therefore, economic efficiency can be improved.

As described above, according to one embodiment of the earth and sand product production system of the present invention, the quality of earth and sand products (improved soil) can be improved without increasing the amount of industrial waste. It is possible to promote the reuse of waste. In addition, it is possible to improve the operating rate of the earth and sand product production plant and improve the economic efficiency. This will speed up the recovery of plant installation costs, and will also have the effect of enabling inexpensive production of improved soil.

In the embodiment of the earth and sand product production system of the present invention, the self-propelled soil improvement machine 200 is used.
In addition to the conveyors 110, 130, 1 as pretreatment equipment
50, 170, sieving devices 120, 140, crushing device 16
0 and the magnetic separator 171 were provided, and the finishing sieving device 180 and the conveyors 190, 210 were provided as post-treatment equipment. However, as described in (I-1A) and (I-1B) above, these pre-treatment equipment And even if only one of the post-treatment equipment is provided, the action of (I-1) above can be obtained,
It goes without saying that a waste reuse promotion effect can be obtained. Further, in the embodiment of the earth and sand product production system of the present invention, the case where the self-propelled soil improvement machine 200 capable of self-propelling is used as the non-stationary earth and sand product production machine has been described as an example. For example, a trailer-type soil improvement machine equipped with only wheels that can be towed by an appropriate towing vehicle (trailer head), or a separate installation means (heavy equipment such as a crane) without wheels. Including)
It is also possible to use a portable soil improvement machine that can be installed / removed from the ground at the installation site and can be transported.
Also in this case, almost the same effect is obtained.

Further, in the above embodiment of the earth and sand product production system of the present invention, the primary sieving device 120 is used.
In FIG. 1, a larger size (oversize) than the grid size of the screen (oversize) was moved and flowed down on the slanted screen and discharged (see arrow c). As indicated by the dotted chain line, the crushing device 125 having the same structure as the crushing device 160 crushes the crushed material into a predetermined size, and the crushed earth and sand is conveyed by the conveyor 1
30 may also be introduced together. In this case, the amount of waste can be further reduced, and the reuse of waste can be further promoted.

Further, in one embodiment of the earth and sand product production system of the present invention, the stationary pretreatment facility (first
As pretreatment equipment), conveyors 110, 130, 15
0, 170, primary / secondary sieving devices 120, 140, a crushing device 160, and a magnetic separator 171 are provided, but in the case of a relatively small-scale earth and sand product production system, the conveyor 13
0,150,170, secondary sieving device 140, crushing device 1
60 and the magnetic separator 171 are omitted and only the conveyor 110 and the primary sieving device 120 are provided.
Direct-propelled soil improvement machine 200
You may make it throw into the sieve unit 1 of this.

Further, in the above embodiment of the earth and sand product production system of the present invention, the stationary conveyor 11 is used.
0, 130, 150, 170, 190 were used, but at least a part of them was replaced with a self-propelled conveyor,
Alternatively, it goes without saying that a system capable of flexibly responding to various needs can be configured by further combining a self-propelled conveyor in addition to the stationary conveyors.

FIG. 4 is a system configuration diagram showing the overall arrangement of another embodiment of the earth and sand product production system of the present invention. This embodiment is another example in which the present invention is applied to a soil improvement system for improving the soil quality of soil generated from construction, as in the above-described embodiment of the present invention.

In FIG. 4, construction soil (excavation soil, etc.) generated at, for example, a construction site or an excavation site is carried by a truck (dump truck) T3 into the soil improvement plant, which is a sediment production plant. The earth and sand product production system according to the present embodiment is installed in a plant to improve the soil quality of the earth and sand.

In other words, this earth and sand product production system is
A sediment transfer machine, such as a hydraulic excavator (power shovel) 500A, for transferring the sediment carried by the truck T3 to the loading sand yard N (see arrow M), and the soil of the loading sand yard N to be described later. Soil improvement machine 60
0 (Refer to arrow mark) A sand loading machine such as a hydraulic excavator (power shovel) 500B and the sand loaded by the hydraulic excavator 500B are introduced to mix and crush with a soil improvement material (solidification material). , A self-propelled soil improvement machine 600 as a non-stationary earth and sand product producing machine that produces (produces) improved soil with improved soil quality, and introduces the improved soil (see arrow M) and selects according to its grain size A sieving device 510,
The improved soil selected by this sieving device 510 (passed through a screen described later) is introduced (see arrow Y) and conveyed to be piled up in the improved soil storage site M (see arrow Y) Conveyor 520
And a truck (dump truck) T for the improved soil in the improved earth storage M
For re-crushing by introducing a sediment loading machine (loading machine) to be loaded into 4, for example, a wheel loader 530 and a machine that has not been sorted by the sieving device 510 (has not passed through a screen described below) (see arrow Y). Conveyor 540 for transporting to the crushable object storage area L (see arrow L), and self-propelled type for introducing the crushable material in the crushable material storage area L, recrushing it, and discharging it to the earth and sand storage area K for re-improvement. Crushing machine (crusher) 55
0A and a sieve unit 1 (described later) of the self-propelled soil improvement machine 600 (which did not pass through the screen described below) were introduced (see arrow L) to re-crush and re-improve It has a self-propelled crusher (crusher) 550B that discharges to the earth and sand storage site J.

The hydraulic excavators 500A and 500B are
The structures are almost similar to each other, and are self-propelled ones that are very commonly used in ordinary construction sites. That is, a traveling body 502 provided with a crawler belt 503 as traveling means, and a revolving body 50 rotatably provided above the traveling body 502.
1 and a multi-joint type front device rotatably connected to the revolving structure 501 (= a boom 506 having a base end pivotally supported by the revolving structure 501, an arm rotatably connected to the boom 506). 505 and a bucket 504 rotatably connected to the arm 505. With such a configuration, the hydraulic excavator 500A is adapted to scoop the earth and sand on the loading platform of the truck T3 into the bucket 504 and transfer it to the loading sand yard N. The hydraulic excavator 500B is used for loading. Sieve unit 1 of soil improvement machine 600 (to be described later)
It is designed to be put into the earth and sand hopper 2 via the. In addition, when excavating the earth and sand by the hydraulic excavator 500A to the earth and sand storage yard, an appropriate means (for example, the bucket 50) is used.
4 is a so-called skeleton bucket) to remove large lumps in the earth and sand.

The self-propelled soil improvement machine 600 has the same structure and function as the soil improvement machine 200 in the embodiment of the earth and sand product production system of the present invention described above. When the earth and sand are put into the sieve unit 1 from 500B, the introduced sand is sorted by the sieve unit 1 according to the particle size (sorting step), and the sorted components (the components not sorted are described later) are It is introduced into the earth and sand hopper 2 and accepted (acceptance process).
The earth and sand received by the earth and sand hopper 2 is placed on the conveyor belt of the carry-in conveyor 4 below the earth and sand hopper 2 and conveyed toward the rear of the self-propelled soil improvement machine. Then, in the vicinity of the downstream end of the carry-in conveyor 4 in the transport direction, a predetermined amount of the solidifying material is added to the surface of the sand or the like being transported from the soil improving material feeding device 5 (solidifying material feeding step). The mixture is introduced into the mixing device 3. The earth and sand and the solidifying material introduced into the mixing device 3 are uniformly stirred and mixed by the paddle mixer in the mixing device 3 to be improved soil and discharged onto the belt of the carry-out conveyor 8 (mixing step). Then, the improved soil is further transported to the rear of the self-propelled soil improvement machine by the carry-out conveyor 8 and finally discharged (delivered) from the rear part of the self-propelled soil improvement machine (discharging step).

The sieving device 510 is the same as the sieving device 510 in the embodiment of the earth and sand product production system of the present invention described above.
Like 0 and 140, a so-called vibrating screen (or a fixed screen may be used) that can vibrate is provided, and although detailed illustration is omitted, for example, the rotational driving force of the vibration motor is transmitted via a known conversion mechanism. By converting the swing motion of the support frame and the screen, components of various sizes contained in the improved soil taken out of the machine and put into the screen in the discharge process of the self-propelled soil improvement machine 600. While loosening the over portion (crushing processing) and discharging it onto the conveyor 540 (the subsequent processing of this over portion will be described later), the under portion is dropped from between the lattices to be sorted (classification processing). . By performing such post-processing,
Finally, it is possible to obtain the improved soil as a relatively good sediment product adjusted to the required grain size (required by the user as the specifications of the sediment product).

The conveyor 520 is the conveyor 5
40 has a structure similar to that of the conveyors 110, 130 and the like in the embodiment of the earth and sand product production system of the present invention described above together with 40, and the sieving device 510 is circulated by driving the conveyor belt with drive wheels driven by a motor. The improved soil for the under parts introduced on the conveyor belt from is conveyed and piled up in the improved soil yard M. This improved soil is loaded onto the truck T4 by the wheel loader 530 and is carried to the user's site.

The above-mentioned self-propelled crusher 550A, 550B
Have almost the same structure as each other, and are of the self-propelled type which is generally used in a usual crushing site. That is,
This self-propelled crusher 550A, 550B is, for example,
From a hopper 552, a traveling body 551 equipped with a right tracked crawler track, a crushing device (for example, a jaw crusher) 553 that is provided above the traveling body 551 and crushes an object to be crushed input from a hopper 552 into a predetermined size. A feeder 554 that guides the input crushed material to the crushing device 553, and the crushing device 55.
Conveyor 5 that conveys crushed material that has been shredded and shrunk in 3
55 and. And with such a configuration,
The self-propelled crushers 550A and 550B are configured to crush the object to be crushed put into the hopper 552 into a predetermined size and carry out the crushed material by the conveyor 555. The self-propelled crusher 550A supplies the improved soil component (for example, gravel) of the excess portion, which is not sorted by the sieving device 510 and is conveyed to the crushed object storage site L by the conveyor 540, by, for example, an unillustrated feeding machine ( It may be further sorted to remove wood etc.) introduced from hopper 552 and recrushed,
It is designed to be discharged to the earth and sand storage site K for re-improvement by the conveyor 555. The improved soil discharged to the sand yard K is fed into the self-propelled soil improvement machine 600 again by a loading machine (not shown) (the hydraulic excavator 500B may be used) as shown by an arrow so that the improved soil is processed again. It has become. In other words, the self-propelled crusher 550A once again uses the self-propelled soil improvement machine 60 for the improved soil for the overrun.
0 of the plurality of production steps (screening step in the sieve unit 1,
Prior to performing the receiving step in the hopper 2, the solidifying material supplying step in the soil quality improving material supplying device 5, the mixing step in the mixing device 3, and the discharging step in the discharging conveyor 8, as a pretreatment. It is designed for crushing.
The self-propelled crusher 550B uses the self-propelled soil improvement machine 600 to remove the excess amount not sorted by the sieving unit 1.
For example, it may be introduced from a hopper 552 through a throwing machine or a carrying machine (not shown) (may be further selected for removing wood and the like), re-crushed, and discharged by the conveyor 555 to the earth and sand storage site J for re-improvement. It has become. Similar to the above, the improved soil discharged to the earth and sand yard J is again loaded into the self-propelled soil improvement machine 600 by the loading machine (not shown) (may be the hydraulic excavator 500B) as shown by the arrow mark, and is improved again. To be processed. In other words, the self-propelled crusher 550B is the same as the sieve unit 1 described above.
Against the overburden of sand in the above, the plurality of production steps of the self-propelled soil improvement machine 600 (sorting step in the sieve unit 1, receiving step in the hopper 2, solidification in the soil improvement material supply device 5 are performed again. Before performing the material supplying step, the mixing step in the mixing device 3, and the discharging step in the discharging conveyor 8, crushing is performed as a pretreatment.

Among the facilities and equipment constituting the system described above, those which are not self-propelled machines, that is,
The conveyors 520 and 540 and the sieving device 351 are all stationary.

In the above, the self-propelled soil improvement machine 6
00 constitutes the non-stationary earth and sand product production machine according to each claim, and the sorting step in the sieving unit 1 of the self-propelled soil improvement machine 600 at least particle-sizes the earth and sand before the mixing step. Corresponds to the first sorting step of sorting based on
The sieving unit 1 constitutes a first sieving means for performing the first selecting step. In addition to the first sorting step, a receiving step in the earth and sand hopper 2 in the self-propelled soil improvement machine 600, a solidifying material supplying step in the soil improving material supplying device 5, a mixing step in the mixing device 3, The discharging process on the discharging conveyor 8 corresponds to a plurality of production processes. At this time, the self-propelled crusher 550B puts the sediment, which has not been selected in the first sorting step and is taken out of the sediment product production machine, into the sediment product production machine again to perform a plurality of production steps again. A second pretreatment facility for performing a pretreatment called crushing is constructed.

Furthermore, the sieving device 510 and the conveyor 52
0 constitutes a stationary post-treatment facility that performs classification and disintegration post-treatment outside the sediment product production machine for sediment discharged outside the sediment product production machine in the discharge process of the sediment product production machine. ,
The sorting step in the sieving apparatus 510 at that time corresponds to a second sorting step in which the soil discharged from the earth and sand product producing machine is sorted based on the particle size, and the sieving apparatus 510 performs the second sorting step. 2 constitutes a sieving means. Then, the self-propelled crusher 550A performs a pretreatment of crushing on the sediment that has not been sorted in the second sorting step before it is again fed into the sand product production machine to perform a plurality of production steps again. Configure a stationary third pretreatment facility that is performed outside the earth and sand product production machine.

Also in the earth and sand product production system of the present embodiment configured as described above, the following effects are obtained based on the same principle as that of the embodiment of the earth and sand product production system of the present invention.

(II-1) Promotion of Waste Reuse (II-1A) Action by Post-treatment In another embodiment of the earth and sand product production system of the present invention described above, in the discharge step in the self-propelled soil improvement machine 600, The earth and sand discharged outside the machine are subjected to post-treatment such as classification and disintegration of earth and sand by a stationary post-treatment facility (sieving device 510 and conveyor 520) separately provided. As a result, even when the performance of the self-propelled soil improvement machine 600 is not always sufficient (for example, how the improved soil particle size distribution is not uniform), it is supplemented by subsequent processing to obtain a high-quality earth and sand product (improved Soil) can be produced. Therefore, a high-quality earth and sand product can be produced without increasing the amount of waste, and the reuse of waste can be promoted. (II-1B) Action by pretreatment before recharging (No. 1) Further, in another embodiment of the earth and sand product production system of the present invention, the first in the sieve unit 1 of the self-propelled soil improvement machine 600. By carrying out a pretreatment for crushing with the self-propelled crusher 550B before loading again into the self-propelled soil improvement machine 600, the earth and sand taken out of the machine without being sorted in the sorting step, in the same manner as above. Even when the performance of the self-propelled mixing machine 600 to be reloaded is not always sufficient, it is possible to compensate for it and finally obtain a high-quality earth and sand product (improved soil) adjusted to the required grain size. In addition, the amount of waste can be further reduced by further crushing and recharging the earth and sand taken out of the machine in the first sorting step, and further promotion of waste reuse can be achieved. (II-1C) Action by pretreatment before recharging (part 2) Furthermore, in another embodiment of the earth and sand product production system of the present invention, earth and sand not selected in the second selection step by the sieving device 510. Against the self-propelled soil improvement machine 600
Even if the performance of the self-propelled mixing machine 600 to be re-injected is not always sufficient, it is supplemented by performing pretreatment of crushing with the self-propelled crusher 550A before charging to the same. It can produce high-quality earth and sand products (improved soil). In addition, the amount of waste can be reduced by crushing the earth and sand that have not been selected in the second selection step and re-inputting them, thus further promoting the reuse of waste.

(II-2) Improving economic efficiency by improving plant operation rate In another embodiment of the earth and sand product production system of the present invention, as in the embodiment of the earth and sand product production system of the present invention, the raw material When the above-mentioned post-treatment facility (sieving device 510 etc.) cannot be operated due to the fact that the earth and sand that will be brought in is not brought into the plant, the self-propelled mixing machine 600 is transported to another operation site outside this plant and used there. . As a result, at least the self-propelled mixing machine 600 can be operated even during this period, so that the operation rate can be improved and the economic efficiency can be improved in the entire system.

As described above, according to another embodiment of the earth and sand product production system of the present invention, it is possible to improve the quality of earth and sand products (improved soil) without increasing industrial waste. This can promote the reuse of waste. In addition, it is possible to improve the operating rate of the earth and sand product production plant and improve the economic efficiency. This will speed up the recovery of plant installation costs, and will also have the effect of enabling inexpensive production of improved soil.

In another embodiment of the earth and sand product production system of the present invention, the self-propelled soil improvement machine 60 is used.
No. 0, the sieve unit 1 is provided above the hopper 2 and the first sorting step by the sieve unit 1 is performed before the receiving step by the hopper 2. However, the present invention is not limited to this, and the first sorting step is performed after the receiving step by the hopper 2. You may go. It suffices to perform at least the first selection step before the mixing step in the mixing device 3. Also in this case, the same effect is obtained.

FIG. 5 is a system configuration diagram showing the overall arrangement of another embodiment of the earth and sand product production system of the present invention. This embodiment is an embodiment in which the present invention is applied to a base material production system for manufacturing a base material (also referred to as a roadbed material on a road) of a paved road or a dike (including a dike).

In FIG. 5, this earth and sand product production system is installed in a base material production plant which is an earth and sand product production plant, and construction in which a large lump has been removed by a screen, crusher, etc. in a preliminary step not shown in advance. A soil and sand hopper 300 in which generated soil (remaining soil) and the like are charged and stored (see an arrow mark), and a conveyor 310 which introduces and conveys the sediment from the sediment hopper 300 (see an arrow mark),
A hopper 320 in which crushed stone (C-40) of 40 mm or less as an aggregate is charged and stored (see arrow T) and a crushed stone of 20 mm or less (C-20) as an aggregate is charged (see arrow TE) and stored Hopper 330 to be stored and hopper 34 to which the ground granules as a grain size adjusting material are put (see arrow G) and stored
0, and a predetermined amount of material (aggregate / granularity adjusting material) is cut out from these hoppers 320, 330, 340 (the hopper 111 in the embodiment of the present invention described above).
Further, the structure such as the conveyor 110 may be used, or another known cutting mechanism may be used. (See arrows Na, D, and N) Addition and introduction to the conveyor 310 (see arrows N, N, and C) Conveyors 350, 360, and 370, and the conveyor 310
Introduce the earth and sand, aggregate, and grain size control material transported by (see arrow H), mix and crush with the solidifying material (soil improving material), and generate the base material (roadbed material in this example) (production) ) And discharges the self-propelled mixing machine 400 as a non-stationary earth and sand product producing machine, and the above-mentioned base material is introduced (see arrow F) and selected according to the particle size, and the selected one is placed in the base material storage S. A sieving device 380 for stacking (see arrow mark) and a conveyer 390 for introducing (see arrow mark M) that has not been sorted by the sieving device 380 (not passed through the screen) (details will be described later) and Have.

The above-mentioned conveyor 310 has substantially the same structure as the conveyors 110, 130 and the like in the above-described embodiment of the earth and sand product production system of the present invention, and the conveyor belt is circulated by driving wheels driven by a motor. By doing so, the earth and sand introduced onto the conveyor belt is conveyed. The conveyors 350, 360, 37
0 and 390 have almost the same structure. And hopper 3
The addition ratio (mixing ratio) of each additive to the earth and sand finally fed into the self-propelled mixing machine 400 is adjusted in a series of pretreatment steps consisting of addition processing by 20 to 340 and conveyors 350 to 370, and comparison is made. The base material is of high quality.

The self-propelled mixing machine 400 has the same structure and function as the soil improvement machine 200 in the one embodiment of the earth and sand product production system of the present invention described above, and from the conveyor 310. Earth and sand on the sieve unit 1,
When the aggregate and the particle size adjusting material (hereinafter appropriately referred to as earth and sand etc.) are put in, the earth and sand etc. put in this sieve unit 1 are sorted according to their grain size (sorting step), and the sorted components are moved downward. It is introduced and accepted in the earth and sand hopper 2 (acceptance process). The earth and sand or the like received by the earth and sand hopper 2 is placed on the conveyor belt of the carry-in conveyor 4 below the earth and sand hopper 2 and conveyed toward the rear of the self-propelled mixing machine. Then, in the vicinity of the downstream end of the carry-in conveyor 4 in the transport direction, the soil-improving material (solidifying material) supplying device 5 is provided on the surface of the sand or the like being transported.
A predetermined amount of solidifying material is added from (solidifying material supplying step), and these mixtures are introduced into the mixing device 3. Mixing device 3
The sediment and the like and the solidifying material introduced therein are uniformly agitated and mixed by the paddle mixer in the mixing device 3, and are discharged as a base material onto the belt of the carry-out conveyor 8 (mixing step). Then, the base material is further transported to the rear of the self-propelled mixing machine by the carry-out conveyor 8 and finally discharged (carried out) from the rear part of the self-propelled mixing machine (discharging step).

The sieving device 380 is the same as the sieving device 380 in the embodiment of the earth and sand product production system of the present invention described above.
Like 0 and 140, a so-called vibrating screen (or a fixed screen may be used) that can vibrate is provided, and although detailed illustration is omitted, for example, the rotational driving force of the vibration motor is transmitted via a known conversion mechanism. Among the components of various sizes contained in the base material taken out of the machine in the discharge process of the self-propelled mixing machine 400 and converted into the screen by converting the swing motion of the support frame and the screen, While the excess portion is loosened (crushing treatment) and discharged onto the conveyor 390, the under portion is dropped from between the lattices and sorted (classification treatment). By performing such post-treatment, the base material (roadbed material in this example) as a relatively high quality sand and sand product adjusted to the finally required grain size (required by the user as the specifications of the sand and sand product) is obtained. The base materials can be obtained and are piled up in the base material storage area S.
Although not shown, the piled earth and sand products are loaded onto a truck (dump truck) by a wheel loader, for example.
It is brought to the user's site. In addition, the excess base material discharged onto the conveyor 390 may be conveyed again to the sieving unit 1 of the self-propelled mixing machine 400 by the conveyor 390, and may be re-charged for small division, or a predetermined amount. It may be transported to a place and crushed by a separate means when a certain amount is collected.

Among the facilities and equipment constituting the system described above, other than the self-propelled mixing machine 400, that is, the hoppers 300, 320, 330, 340, the conveyors 310, 350, 360, 370, 390, and The sieving device 380 is of a stationary type.

In the above, the self-propelled mixing machine 400
In the earth and sand hopper 2, a solidifying material supplying step in the solidifying material supplying device 5, a mixing step in the mixing device 3,
The discharging process on the discharging conveyor 8 corresponds to a plurality of production processes described in each claim. Further, the self-propelled mixing machine 400 constitutes a non-stationary foundation manufacturing machine, and also constitutes a non-stationary earth and sand product producing machine.

Further, the hoppers 320 to 340 and the conveyors 350 to 370 perform a pretreatment for adding additives to the earth and sand outside the earth and sand product production machine prior to a plurality of production steps in the non-stationary earth and sand product production machine. The sieving device 380 constitutes the stationary first pretreatment facility, and performs at least one post-treatment of classification, crushing, and crushing of the sediment taken out of the non-stationary sediment production machine. Configure stationary post-treatment equipment that is performed outside the product production machine.

Also in the earth and sand product production system of the present embodiment configured as described above, the same effects as those of the embodiment of the earth and sand product production system of the present invention and other embodiments can be obtained.

That is, in still another embodiment of the earth and sand product production system of the present invention, the self-propelled mixing machine 40 is used.
Prior to the steps such as the receiving step, the mixing step, the discharging step, etc. in 0, the stationary pretreatment equipment (the hoppers 320 to 340 and the conveyors 350 to 370) separately provided has a purpose of preliminarily using the earth and sand as a raw material. A pre-treatment of adding a predetermined amount of additives (in this example, C-40, C-20, and mountain crushing) is performed. As a result, the self-propelled mixing machine 40
0 is a base material that is a sand and sand product based on the base material material that has already been pretreated and the addition ratio (mixing ratio) of each additive to the sand and sand has been adjusted as described above, and that is in a relatively good condition. Since the material is produced, it is possible to produce a high-quality earth and sand product (base material) even if the performance is not always sufficient. In the embodiment, the soil discharged from the discharging process of the self-propelled mixing machine 400 is subjected to the post-treatment of classification and disintegration of the sand by the stationary type sieving device 380, so that the self-propelled fuel can be discharged. Even if the performance of the type mixing machine 400 is not always sufficient, it can be supplemented to obtain a final product having a required particle size (base material). As described above, a high-quality earth and sand product can be produced without increasing the amount of waste, and the reuse of waste can be promoted.

Further, also in this embodiment, as in the one embodiment of the earth and sand product production system of the present invention and the other embodiments, the pretreatment facility is used because the earth and sand as a raw material is not brought into the plant. (Hoppers 320 to 340, etc.)
When the post-treatment equipment (such as the sieving device 380) cannot be operated, the self-propelled mixing machine 400 is transported to another operation site outside the plant (for example, improved soil production site) and used there (soil improvement). Including use as a machine). As a result, at least the self-propelled mixing machine 400 can be operated, so that the operation rate can be improved and the economical efficiency can be improved in the entire system.

Note that, in still another embodiment of the present invention, the solidifying material is supplied only from the storage tank (solidifying material hopper) 34 provided in the self-propelled mixing machine 400, but in the case of mass processing. Alternatively, the solidifying material may be introduced from a stationary large-capacity solidifying material hopper 410 (see a two-dot chain line in FIG. 5) separately provided outside the self-propelled mixing machine 400, for example, via a screw conveyor 420.

In still another embodiment of the present invention, the hopper 320 stores crushed stones (C-40) of 40 mm or less as an aggregate, and the hopper 330 stores crushed stones of 20 mm or less as an aggregate ( C-20) was stored, crushed granules as a particle size adjusting material were stored in the hopper 340, and these were mixed with a solidifying material to produce a roadbed material, but the present invention is not limited to this.
When the soil such as the remaining soil in the earth and sand hopper 300 is not so bad and it is not necessary to adjust the water content ratio and the viscosity by mountain crushing, the addition of mountain crush from the hopper 340 via the conveyor 370 may be appropriately omitted. . Further, although not within the scope of the present invention, for example, when only the improved soil of the residual soil is desired, the residual soil may be cut out only from the hopper 300 and put into the self-propelled mixing machine 400.

[0113]

According to the invention described in claim 1 , since the non-stationary earth and sand product producing machine produces the earth and sand products based on the earth and sand raw material that has been pretreated in the first pretreatment equipment. Even if the properties and conditions of the earth and sand as the raw material are various, it is possible to improve the quality of earth and sand products without increasing the amount of industrial waste. In addition, when the first pretreatment facility is not operating,
Transport it to the outside of the earth and sand product production plant and
Production rate, so the rate of operation of the sand and sand product production plant
To improve the economy.

According to the second aspect of the invention, since the earth and sand discharged outside the machine in the discharging process of the non-stationary earth and sand product producing machine is subjected to the post-treatment by the stationary type post-treatment facility, the earth and sand as a raw material. Even if the nature and state of soil are various, the quality of earth and sand products can be improved without increasing the amount of industrial waste. In addition, when the post-treatment facility is not in operation, it is transported to the outside of the earth and sand product production plant to independently perform the earth and sand product production, so that the operation rate of the earth and sand product production plant can be improved and the economical efficiency can be improved.

[Brief description of drawings]

FIG. 1 is a system configuration diagram showing an overall arrangement of an embodiment of a soil and sand product production system of the present invention.

FIG. 2 is a side view showing a detailed structure of a self-propelled soil improvement machine that constitutes an embodiment of the earth and sand product production system of the present invention shown in FIG.

FIG. 3 shows a working state of an example of soil improvement work performed by using a self-propelled soil improvement machine constituting another embodiment of the earth and sand product production system of the present invention shown in FIG. 2 at another operation site. It is a figure.

FIG. 4 is a system configuration diagram showing the overall arrangement of another embodiment of the earth and sand product production system of the present invention.

FIG. 5 is a system configuration diagram showing the overall arrangement of another embodiment of the earth and sand product production system of the present invention.

[Explanation of symbols]

1 Sieve Unit (First Sieve Means) 2 Sediment Hopper 3 Mixing Device 8 Discharge Conveyor 110 Conveyor (First Pretreatment Facility) 120 Sieve Device (First Pretreatment Facility) 130 Conveyor (First Pretreatment Facility) 140 Sieve Device ( 1st pretreatment equipment) 150 conveyor (1st pretreatment equipment) 160 crusher (1st pretreatment equipment) 170 conveyor (1st pretreatment equipment) 171 magnetic separator (1st pretreatment equipment) 180 finishing sieving equipment (post) Treatment equipment) 190 Conveyor (post-treatment equipment) 200 Self-propelled soil improvement machine (earth and sand product production machine) 210 Conveyor (post-treatment equipment) 320-340 Hopper (first pre-treatment equipment) 350-370 Conveyor (first pre-treatment equipment) Equipment) 380 Sieving equipment (post-treatment equipment) 400 Self-propelled mixing machine (base production machine, earth and sand product production machine) 510 Sieving equipment (post-treatment equipment) 520 con Bear (post-treatment equipment) 550A Self-propelled crusher (third pre-treatment equipment) 550B Self-propelled crusher (second pre-treatment equipment) 600 Self-propelled soil improvement machine (earth and sand product production machine)

Continuation of the front page (56) Reference JP-A-9-195265 (JP, A) JP-A-59-42049 (JP, A) JP-A-1-119381 (JP, A) (58) Fields investigated (Int .Cl. ⁷ , DB name) E02D 3/12 B09B 5/00 ZAB E02F 7/00

Claims (2)

(57) [Claims] 1. A sediment hopper for receiving sediment, a mixing device for mixing a solidifying material with the received sediment, and a discharge conveyor for discharging the mixed sediment, and a receiving step in the sediment hopper and the mixing device. In the non-stationary earth and sand product production machine, which performs a plurality of production steps including a mixing step in and a discharge step in the discharge conveyor, prior to the plurality of production steps, classification, crushing, crushing, and addition of the sediment During operation of the stationary first pretreatment equipment for performing at least one pretreatment of the substance addition outside the earth and sand product production machine, it is arranged in the earth and sand product production plant provided with the first pretreatment equipment. When the first pretreatment facility is not in operation, the first pretreatment facility is operated in cooperation with the first pretreatment facility to carry out the sediment production, and when the first pretreatment facility is not operating, the sediment product is transported outside to perform the sole sand product production. Features Operations management method of sediment production system to be. 2. A sediment hopper that receives sediment, a mixing device that mixes the solidified material into the accepted sediment, and a discharge conveyor that discharges the mixed sediment, and a receiving step in the sediment hopper and the mixing device. In the mixing step, and a non-stationary earth and sand product production machine that performs a plurality of production steps including an ejection step on the ejection conveyor, the earth and sand discharged outside the earth and sand product production machine in the ejection step is classified, During operation of the stationary type post-treatment equipment that performs at least one post-treatment of crushing, crushing, and additive addition outside the earth and sand product production machine, inside the earth and sand product production plant provided with the post-treatment equipment. Arrangement to cause the sand and sand product production in cooperation with the post-treatment facility, and when the post-treatment facility is out of operation, transport it to the outside of the sand and sand product production plant to independently produce the sand and sand product. Operations management method of sediment production system which is characterized.