JP3742786B2 - Earth and sand product production system - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an earth and sand product production system for producing earth and sand products such as improved soil and base materials. More specifically, the present invention causes an increase in industrial waste even when the nature and state of the earth and sand used as raw materials are diverse. The present invention relates to an earth and sand product production system that can improve the quality of earth and sand products and promote waste reuse.
[0002]
[Prior art]
[Patent Document 1]
JP-A-54-58901
[Patent Document 2]
Japanese Patent Laid-Open No. 9-195265
[0003]
For example, in burial work such as gas pipes, water and sewage work, and other road work and foundation work, it is desirable to refill the soil generated by excavation as it is. However, if the generated soil is not suitable for backfilling (for example, if it contains a large amount of rocks, brick pieces, concrete pieces, metal, or other foreign matter, or if clayy soil with high viscosity or weathering has progressed too much) In the case where the soil itself is soft and there is a possibility that land subsidence may occur if it is backfilled as it is), for example, as described in Japanese Patent Laid-Open No. 54-58901, a stationary soil improvement machine is provided. In a soil improvement plant (hereinafter referred to as a stationary soil improvement plant as appropriate), after mixing and solidifying a soil improvement material mainly composed of lime, cement, etc. in the generated soil, it is improved to a reusable high quality soil. The excavation site is filled.
[0004]
In such soil improvement work, for example, as shown in FIG. 8 of JP-A-9-195265, there is a method using a self-propelled soil improvement machine in which the soil improvement machine can run on its own and has mobility. It has already been advocated. The self-propelled soil improvement machine includes a sediment hopper that receives sediment, a mixing device that mixes the received sediment and solidified material, and a discharge conveyor that discharges (carryes out) 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.
[0005]
[Problems to be solved by the invention]
In the prior art described in FIG. 8 of the above Japanese Patent Laid-Open No. 9-195265, when the earth and sand as a raw material is introduced into the earth and sand hopper of the earth and sand machine by using a hydraulic excavator or the like, The introduced earth and sand are introduced into the mixing device and mixed with the soil quality improving material, and the mixture is discharged as an earth and sand product (improved earth) by a discharge conveyor. The discharged improved soil is further conveyed by a separately provided conveyor (secondary conveyor), and is loaded onto a sediment transport truck (dump truck).
[0006]
In recent years, with the background of promoting waste reuse, such as the enforcement of the Recycled Resources Promotion Law (so-called Recycling Law) (October 1991), there is a growing need for soil quality improvement of excavated soil, which is subject to soil quality improvement. The nature and state of earth and sand has become extremely diverse. Therefore, in the earth and sand as raw materials (for example, residual soil generated in urban areas, etc.), for example, sandy soil with a high sand content and low adhesion, or clay with high adhesion, such as clay with high adhesion, It has been included. In addition, there are cases where those having different water contents are mixed, or those in which clay-like soil is compressed to be agglomerated.
[0007]
On the other hand, with the background of the promotion of waste recycling described above, there is an increasing need for improving the quality of improved soil, which is a sediment product. Improved soil) is now required.
[0008]
However, when trying to improve the soil using only a self-propelled soil conditioner as in the prior art described in FIG. 8 of the Japanese Patent Laid-Open No. 9-195265, there are restrictions on the space for mounting the equipment. The performance of the self-propelled soil improvement machine may not necessarily be sufficient to cope with the recent trends as described above. Therefore, when various kinds of earth and sand are introduced into the hopper as described above, the quality of the improved soil discharged from the discharge conveyor (primary conveyor) is not necessarily sufficient to meet the above-mentioned recent high quality needs. there is a possibility. As an example of quality needs, the standard set by the government as the standard of particle size distribution of backfill material is 13mm or less in Tokyo, 25mm or less in Aichi, 20mm or less in Osaka, etc. When soil improvement work is performed, there is a possibility that the grain size distribution in which a large number of those exceeding the upper limit of particle size are mixed in the improved soil cannot satisfy the standard. In such a case, a product that does not satisfy the required quality is disposed as industrial waste as it is, which causes an increase in the amount of waste and goes against the promotion of waste reuse promotion.
[0009]
In the prior art, a sieving means is further provided on the top of the earth and sand hopper to supply the earth and sand to the earth and sand hopper based on particle size, and the screening means is selected prior to the receiving process. However, this sieving means is mainly intended to remove foreign substances and is not substantially useful for improving the quality.
[0010]
As described above, in the method of improving soil quality using only a self-propelled soil conditioner as in the prior art described in FIG. 8 of the above Japanese Patent Laid-Open No. 9-195265, the nature and state of the earth and sand as a raw material When there is a wide variety, it is difficult to improve the quality of earth and sand products without causing an increase in industrial waste, and it has not been possible to promote waste reuse.
By the way, in view of the diversification of raw materials based on the background of the promotion of waste reuse described above, the improvement of product quality, and the reduction of waste use, the above-mentioned JP-A-54-58901 In the stationary soil improvement plant, a stationary pretreatment facility that performs pretreatment such as classification, crushing, and crushing of the soil as a raw material prior to the soil improvement process in the stationary soil improvement machine is separately provided, or It may be possible to separately provide a stationary post-treatment facility that performs post-treatments such as classification, crushing, and crushing on the soil that has been subjected to the soil improvement process in the stationary soil improvement machine.
[0011]
However, in this case, the following new problem arises.
[0012]
In general, in order to stabilize the operation of the soil improvement machine, it is necessary for the stationary soil improvement plant to have a stock yard for stocking a large amount of earth and sand as raw materials, but this requires a large area. Therefore, plant installation costs including land acquisition costs tend to be high.
[0013]
However, since the earth and sand to be improved are mainly generated by public works, seasonal variations are large due to its nature, and relatively large amounts of earth and sand are brought in in winter and early spring (especially concentrated at the end of the year and at the end of the year). In summer, the amount of earth and sand is extremely small, and it is difficult to secure the amount of operation throughout the year. In addition, the stationary soil improvement plant is preferably located as close as possible to a place (such as an urban area or a densely populated area) where earth and sand as raw materials are regularly generated. Considering the possibility of complaints from neighboring residents due to the occurrence of mud pulling (tire marks), the actual situation is that it must be constructed in a suburban area. Therefore, the transportation cost from the place where the earth and sand is generated (actual construction site) to the stationary soil improvement plant is increased, and the construction cost increases due to the increase in the truck transportation cost. Purchasing earth and sand (improved earth) may result in cost savings, and it will not be able to collect the earth and sand that matches the processing capacity, further reducing the operating rate. That is, a plant constructed at a high cost may be idled without being fully operated, which is uneconomical.
[0014]
[Patent Document 3] Japanese Patent Laid-Open No. 11-269867
[0015]
In the above description, the soil improvement work in which the improved soil with improved poor soil quality is a soil product has been described as an example, but the mixing device provided in the stationary soil improvement plant or the self-propelled soil improvement machine For example, a base material (also called roadbed material in roads) for paved roads and embankments (including diversion embankments) has already been manufactured using the function of the solidifying material supply device (as an example of embankments) Japanese Patent Laid-Open No. 11-269867).
[0016]
In this base material manufacturing, in addition to the earth and sand (for example, residual soil) as a raw material, the particle size adjusting material and aggregate are supplied together in the earth and sand hopper, and they are mixed with the solidification material by a mixing device, and are used as earth and sand products. The base material will be produced.
[0017]
This base material manufacturing work has the same problems as the soil improvement work described above. In other words, 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 raw earth and sand are diverse, 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. In addition, even if an earth and sand product production plant (in this case, a base material manufacturing plant) is constructed at a high cost, it may be idled without being fully operated, which is uneconomical.
[0018]
The object of the present invention is to improve the quality of earth and sand products and to promote the reuse of waste without causing an increase in industrial waste even when the nature and state of the earth and sand as raw materials are diverse. The purpose is to provide a production system for earth and sand products.
[0019]
[Means for Solving the Problems]
  (1) In order to achieve the above object, the earth and sand product production system of the present invention comprises:A soil and sand product production system that produces construction-generated soil with various properties and conditions generated at construction sites, etc. as improved soil.To the earth and sand hopper that accepts earth and sand, the accepted earth and sandAdditiveTo mixPaddle shapedA mixing device, and a discharge conveyor for discharging the mixed earth and sand; a receiving step in the earth and sand hopper;AdditiveA self-propelled earth and sand product production machine that performs a plurality of production steps including a mixing step and a discharging step on the discharge conveyor;The particle size of the construction generated soil that is disposed on the sediment input side to the self-propelled earth and sand product production machine and is introduced into the earth and sand hopper of the self-propelled earth and sand product production machine is at least one of classification, crushing, and crushing Adjust to the maximum granularity by one processWith a stationary pre-treatment facilityIt is characterized by having.
[0020]
If you try to produce earth and sand products using only non-stationary earth and sand product production machines when the nature and state of the earth and sand as raw materials are diverse, non-stationary type due to restrictions on equipment mounting space, etc. If the performance of the earth and sand product production machine is not always sufficient, a high-quality earth and sand product cannot be obtained, or in order to obtain it, an increase in the amount of waste may be caused. In the earth and sand product production system of the present invention, prior to a plurality of production processes such as a receiving process, a mixing process, and a discharging process in a non-stationary earth and sand product producing machine, a stationary first pretreatment facility provided in advance In addition, pretreatment such as classification, crushing, crushing, and additive addition of earth and sand as raw materials is performed. As a result, the non-stationary earth and sand product production machine will produce earth and sand products based on pre-treated earth and sand materials, so even if its performance is not sufficient, it will produce high quality earth and sand products. In addition, the amount of waste at that time is not increased. Accordingly, it is possible to promote waste reuse.
[0021]
  (2)In the above (1), the particle size of the improved soil disposed on the discharge side of the self-propelled earth and sand product production machine and discharged from the self-propelled earth and sand product production machine is at least one of classification, pulverization, and crushing. It is characterized by having a stationary first post-treatment facility that adjusts the required particle size by processing.
[0022]
In the earth and sand product production system of the present invention, the earth and sand discharged to the outside of the non-stationary earth and sand product production machine in the discharge process in the non-stationary earth and sand product production machine is separated by a stationary post-treatment facility provided separately. After-treatment such as classification, crushing, crushing, and addition of additives. Thus, as in (1) above, even if the performance of the non-stationary earth and sand product production machine is not sufficient, the portion can be supplemented by post-processing, so high quality without increasing the amount of waste. Sediment products can be produced. Accordingly, it is possible to promote waste reuse.
[0023]
  (3) In (1) or (2) aboveThe earth and sand product producing machine includes a first sieving means for performing a first sieving step for sorting sewage and sand based on particle size at least before the mixing step as one of the plurality of production steps. The earth and sand taken out of the earth and sand product production machine is taken in, and the earth and sand is adjusted to the maximum particle size of the self-propelled earth and sand product production machine by at least one of classification, crushing, and crushing.A second pretreatment facility is also providedIt is characterized by that.
[0024]
  (4) In (2) above,in frontThe post-processing facility includes a second sieving means for performing a second sorting step of sorting the earth and sand discharged out of the earth and sand product production machine based on particle size,in frontThe earth and sand that was not sorted in the second sorting process,The maximum particle size of the self-propelled earth and sand product production machine is adjusted by at least one pretreatment among classification, crushing, and crushing.A third pretreatment facility is further provided.
[0025]
  (5) (1) to (4) aboveIn any of the above, the earth and sand product producing machine is a non-stationary soil improvement using the earth and sand hopper and the additive mixed with the mixing device to improve the earth and soil of the received earth and sand to improve the soil. It is a machine.
[0026]
  (6) The above (1) to (4)In any of the above, the earth and sand product production machine receives the earth and sand and the particle size adjusting material or the aggregate with the earth and sand hopper, and mixes the received earth and sand, the particle size adjusting material or the aggregate and the additive with the mixing device. It is a non-stationary base manufacturing machine used as a base material for roads and dikes.
[0027]
  (7) In the above (1) to (4), preferably, the earth and sand product producing machine accepts earth and sand and a particle size adjusting material or aggregate with the earth and sand hopper, and the received earth and sand and particle size adjusting material or Aggregate and saidAdditiveIs a non-stationary base manufacturing machine that is used as a base material for roads, dikes, etc.
[0028]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described 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. In this embodiment, the present invention is applied to a soil quality improvement system for improving the soil quality of construction generated soil.
[0029]
In FIG. 1, construction generated soil (excavated soil, etc.) generated at, for example, a construction site or excavation site, etc., is carried by a truck (dump truck) T1 into a soil improvement plant that is a sediment production plant. It is piled up in the remaining earth storage site (with or without a roof) P. The earth and sand product production system according to the present embodiment is provided in a plant to improve the soil quality of the earth and sand, and a plurality of conveyors are provided to improve the earth and sand passage efficiency in each facility / equipment and to increase the amount of earth and sand processing. And it is the structure which combined several sieve apparatus etc. in multiple steps.
[0030]
In other words, this earth and sand product production system accepts the earth and sand loading machine (loading machine) for loading earth and sand, for example, the wheel loader 100 (or a hydraulic excavator instead), and the earth and sand introduced by the wheel loader 100 by the earth and sand hopper 111. Conveyor 110, the primary sieving device 120 for introducing and sorting the earth and sand conveyed by the conveyor 110, and sorting according to the particle size, and the primary sieving device 120 (passed through the screen described later) A conveyor 130 that introduces and conveys the material, a secondary sieving device 140 that introduces the earth and sand conveyed by the conveyor 130 and sorts it according to the particle size, and a screen that is sorted by the secondary sieving device 140 (screen described later) Is not sorted by the conveyor 150 which introduces and conveys the product (which has passed through) and the secondary sieving device 140 A crushing device (crusher) 160 for introducing and crushing (which did not pass through a screen described later), a conveyor 170 for introducing and transporting the earth and sand conveyed by the conveyor 150, and an upper portion of the conveyor 170 are provided. Non-stationary type which introduces the earth and sand conveyed by said magnetic separator 171 and said conveyor 170, mixes and crushes with soil quality improving material (solidifying material), and produces (produces) improved soil with improved soil quality A self-propelled soil improvement machine 200 as a earth and sand product production machine, a finishing sieve device 180 for introducing the improved soil and sorting according to the particle size, and the finishing sieve device 180 (passed through a screen described later) ) It was not sorted by the conveyor 190 for introducing and transporting improved soil and stacking it in the improved storage site R, and the finishing sieving device 180 (does not pass through the screen described later). )) And transporting it to a waste storage site (not shown), and a sediment input machine (loading machine) 220, for example, a wheel loader) 220, which inputs the improved soil of the improved storage site R to a truck (dump truck) T2. And have.
[0031]
The wheel loader 100 is generally used at a normal construction site, and includes a front wheel 101 and a rear wheel 102, a front frame 104 and a rear frame 105 that travel by the front and rear wheels 101 and 102, The vehicle has a bucket 103 provided on the front frame 104 and a driver's seat 106 provided on the rear frame 105, and steering (changing the traveling direction) is performed by bending the front frame 104 and the rear frame 105. It is.
[0032]
The conveyor 110 is a so-called belt conveyor (may be an apron feeder), and detailed illustration is omitted. For example, a frame, a driving wheel and a driven wheel (idler) supported by the frame, and the driving wheel are driven. Motor (for example, an electric motor or a hydraulic motor), a conveyor belt wound around the drive wheel and the driven wheel, and the like. It is designed to transport the earth and sand introduced in.
[0033]
At this time, although detailed illustration is omitted, the earth and sand hopper 111 has, for example, a bottomless box shape with upper and lower openings, and is located on the downstream side in the feed direction of the conveyor 110 among the four side walls. The side wall is formed with an earth supply opening (gate) having a predetermined height and a width direction dimension slightly smaller than the width of the transport belt. Thereby, when the earth and sand hopper 111 drops the earth and sand thrown in through the upper opening (see arrow A) onto the conveyor belt of the conveyor 110 and conveys it to the downstream side, the earth and sand hopper 111 is conveyed on the conveyor belt. Only the sand that has passed through the opening for supplying earth and sand (= the amount corresponding to the height of the opening for supply) is led out (cut out) out of the earth and sand hopper 111. Thus, a predetermined amount of earth and sand determined by the conveying speed of the conveyor belt in the conveyor 110 and the opening area of the opening for supplying earth and sand is supplied to the primary sieving device 120 (quantitative supply function). .
[0034]
The primary sieving device 120 includes a so-called vibrating sieve (or a fixed sieve) that can vibrate. Although not shown in detail, for example, the frame and the frame elastically via a spring. A support frame body that is supported, a lattice member (screen) mounted on the support frame body, and a vibration motor (an electric motor or a hydraulic motor) that generates a rotational driving force. The rotational driving force is converted into a swinging motion of the support frame and the screen through a known conversion mechanism. As a result, among the components of various sizes contained in the earth and sand (see arrow a) input to the screen, those that are larger than the screen grid size (lattice eyes) (over) are loosened (disintegration processing) While moving and flowing down on an inclined screen (see arrow C), the screen size is smaller than the screen lattice size (under), and only the particles that fall below the lattice size (disintegration treatment) are dropped and sorted downward. (Classification process). Thereby, the large block contained in earth and sand is removed.
[0035]
The conveyor 130 has substantially the same structure as the conveyor 110 described above, and includes a frame, a driving wheel, a driven wheel, a motor, a conveyor belt, and the like. The earth and sand introduced on the conveyor belt from 120 (see arrow D) is conveyed. Since the conveyors 150, 170, 190, and 210 have almost the same structure, the description of the structure will be omitted as appropriate.
[0036]
The secondary sieving device 140 has substantially the same structure as the above-described primary sieving device 120 and has a similar classification function. Among the earth and sand introduced into the screen (see arrow o), the grid size (however, 1 While discharging the larger one (smaller than the grid size of the next sieving device 120) while loosening it (see arrow F), let it fall downward from between the grids while loosening only the one smaller than the grid size (under part) As a result, the fallen and sorted (see arrow key) is adjusted so that only gravel of a predetermined size is obtained.
[0037]
The conveyor 150 conveys earth and sand (see arrow keys) introduced from the secondary sieving device 120 onto a conveyor belt. At this time, the crushing device 160 introduces the over portion indicated by the arrow crushed into a predetermined size, and introduces the crushed earth and sand together onto the conveyor 150 (see arrow ku). ing. The crushing device 160 is, for example, a rotary crushing device such as a 6-axis crusher including a so-called roll crusher, and a detailed illustration is omitted, but a pair of roll-shaped rotating bodies (crushing crushers) to which crushing blades are attached. A rotor), the pair of rotating bodies are rotated in opposite directions, and the introduced soil is sandwiched between the rotating bodies for crushing.
[0038]
The conveyer 170 conveys earth and sand (see arrow) introduced from the conveyer 150 onto a conveyer belt. At this time, the magnetic substance contained in the transporting earth and sand is magnetically attracted and removed by the magnetic separator 171 provided in the upper part. Although not shown in detail in the magnetic separator 171, for example, a magnetic separator belt disposed above the conveyor belt of the conveyor 170 so as to be substantially orthogonal to the conveyor belt is used as a motor (electric motor or hydraulic motor). By driving around the magnetic force generating means (coil in this example) 171a, the magnetic force from the magnetic force generating means is applied to the magnetic separator belt so that the magnetic material on the conveyor belt is adsorbed to the magnetic separator belt (arrow arrow After that, it is dropped to the side of the conveyor belt and discharged. As a result, metallic foreign matters such as empty cans, reinforcing bars and nails contained in the earth and sand are removed.
[0039]
Self-propelled soil improvement is finally achieved through a series of pretreatment steps including classification processing and crushing processing by selecting the sieving devices 120 and 140, crushing processing by the crushing device 160, and metal removal processing by the magnetic separator 171 described above. The maximum particle size of the earth and sand introduced into the machine 200 is adjusted, the lump is loosened, and relatively high-quality earth and sand (residue) is completed.
[0040]
The soil improvement machine 200 is a self-propelled soil improvement machine known as this type. FIG. 2 is a side view showing a detailed structure of the self-propelled soil improvement machine 200.
[0041]
In FIG. 2 and FIG. 1, the self-propelled soil improvement machine 200 is loaded with the soil to be improved by the conveyor 170 (see the arrow in FIG. 1). The earth and sand is sorted into a predetermined particle size (details will be described later). The sieve unit 1, the earth and sand hopper 2 that receives and temporarily stores the earth and sand sorted by the sieve unit 1, and the earth and sand hopper 2 are introduced. A mixing device (treatment tank) 3 for mixing the earth and sand with a predetermined soil quality improving material (solidifying material) and discharging it downward; a carry-in conveyor 4 for conveying and introducing the earth and sand received in the earth and sand hopper 2 to the mixing device 3; The soil improvement machine main body 6 equipped with the soil improvement material supply device 5 for supplying the soil improvement material, the traveling body 7 provided below the soil improvement machine main body 6, and the mixing device 3 are used for mixing. The mixture discharged to the lower side is received and transported to the rear side of the self-propelled soil improvement machine 200 (the other side in the longitudinal direction of the main body frame soil improvement machine mounting portion 9A described later, the right side in FIG. 2) and discharged (carrying out). And a discharge conveyor 8.
[0042]
The traveling body 7 includes a main body frame 9 and left and right endless track tracks 10. The main body frame 9 is formed of, for example, a substantially rectangular frame, on which the sieve unit 1, the earth and sand hopper 2, the mixing device 3, the soil improvement material supply device 5, a power unit (machine room) 79 described later, and the like are placed. The soil improvement machine attachment portion 9A constituting the chassis to be constructed, and the track frame portion 9B connecting the soil improvement machine attachment portion 9A and the left and right endless track crawler tracks 10 are configured. Further, the endless track crawler belt 10 is stretched between a drive wheel 11 and a driven wheel (idler) 12 rotatably supported by the track frame portion 9B, and travels left and right 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 hydraulic motor 13.
[0043]
The sieve unit 1 is a so-called vibrating sieve that can be swung including vertical vibrations. A spring 16 is attached to a support member 15 provided on a support post 14 erected on the main body frame soil conditioner mounting portion 9A. A support frame body 17 elastically supported via the screen, a lattice member (screen, not shown) mounted on the support frame body 17, and a vibration shaft (not shown) of the screen are inserted inside. A vibration hydraulic motor (not shown) that generates a driving force for rotating the rotary drum (not shown). Then, the screen and the support frame body 17 are vibrated in the vertical direction by transmitting the driving force of the vibration hydraulic motor to the rotating drum and rotating it to vibrate the vibration shaft of the screen.
[0044]
The carry-in conveyor 4 is inclined so as to rise obliquely by a predetermined angle from one side in the longitudinal direction of the main body frame soil improvement machine attachment portion 9A toward the other side (toward the rear of the self-propelled soil improvement machine 200). Is provided. The carry-in conveyor 4 is provided with a frame 22 and a conveyer belt that is wound around a drive wheel 23 supported by the frame 22 and driven by a carry-in conveyer hydraulic motor (not shown) and a driven wheel (idler) 24. 25, a roller (carrier roller) 26 for supporting the conveyance surface of the conveyance belt 25, and a regulation plate 27 provided on both the left and right sides in the width direction at the downstream end of the conveyance surface of the conveyance belt 25. Yes.
[0045]
The earth and sand hopper 2 is provided with its upper end fixed to the support member 15, and its lower end is inclined at an angle corresponding to the inclination angle of the carry-in conveyor 4. Further, the earth and sand hopper 2 has a bottomless box shape (in other words, a substantially rectangular tube shape or a frame shape) whose diameter increases upward for the convenience of smooth sand and sand injection from the sieve unit 1. The top and bottom are open.
[0046]
At this time, of the four side walls (not shown) constituting the frame body of the earth and sand hopper 2, the side wall (not shown) located on the downstream side in the feeding direction of the carry-in conveyor 4 has a height described above. An unillustrated earth and sand supply opening (gate), which is substantially the same as the height of the regulating plate 27 and whose width direction dimension is slightly smaller than the width of the transport belt 25 of the carry-in conveyor 4, is formed. Then, the earth and sand hopper 2 drops the earth and sand thrown in through the upper opening from the sieve unit 1 onto the conveying belt 25 of the carry-in conveyor 4 and conveys it to the downstream side. Of the input earth and sand that is 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 (drawn) and led to the mixing device 3. . Thereby, a predetermined amount (predetermined so as not to overflow the earth and sand hopper 2) determined by the conveying speed of the conveying belt 25 in the carry-in conveyor 4 and the opening area of the opening for supplying earth and sand is It is supplied from the hopper 2 to the mixing device 3.
[0047]
The soil improvement material supply device 5 is supported by, for example, a substantially rectangular base plate 33 provided on four (or three) support columns 32 erected on the main body frame soil improvement machine attachment portion 9A. . At this time, the downstream end of the carry-in conveyor 4 extends between the columns 32 and 32, and in such a positional relationship, the carry-in conveyor 4 is directly above the downstream end of the carry-in conveyor 4. A predetermined amount of soil improvement material is added on the carry-in conveyor 4 to the earth and sand supplied from the earth and sand hopper 2 by the soil quality improvement material supply device 5.
[0048]
The soil improvement material supply device 5 includes a storage tank (solidifying material hopper) 34 that stores a predetermined amount of soil improvement material, and a feeder 35 that is connected to a lower portion of the storage tank 34 and supplies the soil improvement material by a predetermined amount. It has. 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.
[0049]
The storage tank 34 is generally cylindrical in shape and has a space for storing the soil improvement material therein, and has a variable height (details will be described later). That is, the storage tank 34 is installed on the base plate 33 on the lower side, and is provided between the bottomed cylindrical lower tank portion 36, the top plate portion 37, and the lower tank portion 36 and the top plate portion 37. It is comprised from the bellows part 38 as an upper tank part from which the volume of an upper side is variable.
[0050]
A bottom plate (not shown) of the lower tank portion 36 is provided with a soil improvement material supply opening having a predetermined opening diameter, and the soil improvement material is supplied to the feeder 35 from this opening.
[0051]
The feeder 35 is referred to as a so-called rotary feeder, and a rotor (not shown) that is rotationally driven by a feeder motor (not shown) is provided therein. The rotor is provided with a plurality of partition walls (not shown) in a radial pattern. Each time the rotor rotates by a predetermined angle, the soil improvement material corresponding to the space between the adjacent partition walls is separated. A certain amount of soil-improving material for the volume is supplied. Thereby, by controlling the rotational speed of the feeder motor, the supply amount (addition rate) of the soil improvement material can be controlled, and the mixing ratio of the soil and the soil improvement material can be made exactly constant. .
Specifically, for example, the amount of earth and sand transported by the carry-in conveyor 4 is detected by a detection means (not shown) (or by detecting the amount of the sand and soil quality improving material mixture by the discharge conveyor 8, the amount of earth and sand by the carry-in conveyor 4 is indirectly detected. The conveyance amount may be detected), and the feeder hydraulic motor is driven and controlled in accordance with the detected amount.
The above-described storage tank 34 is divided into upper and lower parts, and the bellows part 38 is provided on the upper side, so that the storage capacity of the soil improvement material by the storage tank 34 is increased and the entire self-propelled soil improvement machine 200 is trailer. This is because the height dimension is lowered when transported by, for example.
[0052]
That is, a support rod 58 is suspended from a mounting plate 57 provided on the top plate portion 37, and a guide cylinder 59 is erected at a position corresponding to the position where each support rod 58 of the base plate 33 is suspended. Yes. Then, when a 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 expands. When the pin insertion hole 60 provided above the support rod 58 is aligned with the pin insertion hole 61 and the stopper pin is inserted, the bellows portion 38 is held in the retracted state. It has become so.
[0053]
The mixing device 3 is provided in a mixing device main body 62 made of a rectangular container arranged in the longitudinal direction (= substantially horizontal direction), and on the upper front side of the mixing device main body 62, and the sand and sand from the carry-in conveyor 4 and An inlet (not shown) for introducing a soil improvement material from the soil improvement material supply device 5, a discharge port (not shown) provided at the lower rear side of the mixing device main body 62, and the inside of the mixing device main body 62 And an even number (for example, two) of paddle mixers (not shown) provided in parallel with each other, and a mixing hydraulic motor 72 for generating a driving force.
[0054]
The paddle mixer has a structure in which a rotating shaft (not shown) is provided with a large number of blades (paddles, not shown) as stirring / transfer members intermittently (for example, every 90 ° in the circumferential direction and every predetermined pitch in the axial direction). The rear end of the rotating shaft is connected to the output shaft of the mixing hydraulic motor 72 via a transmission gear (not shown). Then, by driving the mixing hydraulic motor 72, both rotation shafts of the paddle mixer are simultaneously rotated in opposite directions to each other (so that opposite sides of the rotation shafts are turned upward), and both are connected via the introduction port. The earth and sand introduced in the central part between the paddle mixer and the soil conditioner are transferred to the outlet side while stirring, and during the transfer, the mixture is crushed (coarse) and mixed uniformly. Improved soil is manufactured. And the improved soil manufactured in this way is discharged | emitted on the said discharge conveyor 8 by the effect | action of dead weight from a discharge port.
[0055]
The discharge conveyor 8 is wound between a frame 80 and drive wheels 74 and driven wheels (idler, not shown) supported by the frame 80 and driven by a discharge conveyor hydraulic motor (not shown). And a roller (carrier roller) 81 for supporting the conveying surface of the belt 75. The belt 75 is driven to circulate and drop from the mixing device 3 onto the belt 75. The mixture (improved soil) is transported and fed into the finishing sieve device 180 (see FIG. 1).
[0056]
Here, the sieve unit 1, the carry-in conveyor 4, the mixing device 3, the discharge conveyor 8, and the endless track crawler belt 10 are a power source provided in the self-propelled soil improvement machine 200, that is, an engine as a prime mover (not shown). ) And at least one hydraulic pump (not shown) driven by the engine. Pressure oil from the hydraulic pump is supplied to the sieve unit 1, the carry-in conveyor 4, the mixing device 3, and the discharge conveyor via a control valve device (not shown) having a control valve for controlling the direction and flow rate of the pressure oil. 8 and the endless track crawler belt 10 respectively corresponding 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. As a result, the corresponding hydraulic motor is rotationally driven.
[0057]
The engine, the hydraulic pump, and the control valve device are all provided in a power unit 79 mounted on the upper end of the other end in the longitudinal direction of the main body frame soil improvement machine attachment portion 9A via a power unit loading member 78. It has been.
[0058]
The self-propelled soil improvement machine 200, which is not clearly shown in FIG. 1, is disposed at the exit of this plant, and is self-propelled when moving to another operation site to be described later. A sufficient traveling area is secured in advance.
In the self-propelled soil improvement machine 200 having the above-described configuration, when earth and sand are introduced from the conveyor 170 to the sieve unit 1, the earth and sand are sorted by the sieve unit 1 according to the particle size (sorting process) and sorted. The earth and sand components are introduced into the lower earth and sand hopper 2 and received (accepting process). 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, 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 carrying direction, a predetermined amount of soil-improving material is added from the soil-improving material feeding device 5 to the surface of the carrying soil (solidifying material feeding step), and these mixtures are mixed. It is introduced into the device 3. The earth and sand introduced into the mixing apparatus 3 are uniformly stirred and mixed by the paddle mixer in the mixing apparatus main body 62 and discharged as a modified soil onto the belt 75 of the carry-out conveyor 8 (mixing step). The improved soil is further conveyed to the rear of the self-propelled soil improvement machine by the carry-out conveyor 8, and is finally discharged (unloaded) from the rear portion of the self-propelled soil improvement machine (discharge process).
[0059]
Returning to FIG. 1, the finishing sieving device 180 has substantially the same structure as the primary sieving device 140 and the secondary sieving device 140 described above, and has the same classification function. Of the earth and sand that has been put on the screen (see arrow symbol), a larger one (over portion) than the lattice size (but smaller than the lattice size of the secondary sieving device 140) is discharged to the conveyor 210 (see arrow symbol). ) On the other hand, loosen only the grid size or less (under), drop it down from the grid (see arrows), and finally adjust to the required particle size (required by the user as the specifications of the sediment product) It is supposed to be made earth and sand products (improved soil).
[0060]
The conveyor 190 introduces and transports the finally adjusted sediment product as described above onto the transport belt, and piles it on a predetermined improved storage site R (see arrow so). The piled sediment product (improved soil) is loaded onto the truck (dump truck) T2 by the wheel loader 220 having the same structure as the wheel loader 110 described above, and is carried to the user's site.
[0061]
In addition, among each equipment and apparatus which comprises the system described above, except wheel loader 100,220 and self-propelled soil improvement machine 200, ie, conveyor 110,130,150,170,190,210, sieving device 120, 140, 180, the crushing device 160, and the magnetic separator 171 are all stationary.
[0062]
In the above, the self-propelled soil improvement machine 200 constitutes a non-stationary earth and sand product production machine according to the claims, and the screening step in the sieve unit in the self-propelled soil improvement machine 200, The receiving process in the earth and sand hopper 2, the solidifying material supplying process in the soil quality improving material supplying apparatus 5, the mixing process in the mixing apparatus 3, and the discharging process in the discharge conveyor 8 correspond to a plurality of production processes.
[0063]
In addition, the conveyors 110, 130, 150, 170, the sieving devices 120, 140, the crushing device 160, and the magnetic separator 171 are pre-processed for classification, crushing, and crushing of earth and sand as raw materials prior to a plurality of production steps. This constitutes a stationary first pretreatment facility that performs the operation outside the earth and sand product production machine. Further, the finishing sieving device 180 and the conveyors 190 and 210 perform classification and crushing post-treatment outside the earth and sand product production machine for the earth and sand discharged outside the earth and sand product production machine in the discharge process of the earth and sand product production machine. Configure the stationary post-processing equipment to be performed.
[0064]
The operation of the earth and sand product production system of the present embodiment configured as described above will be sequentially described below.
[0065]
(I-1) Waste recycling promotion
(I-1A) Effect of pretreatment
In general, the self-propelled soil improvement machine has a sediment hopper that receives sediment, a mixing device that mixes the received sediment and solidified material, and a discharge conveyor that discharges (carryes out) the mixture, In order to improve the soil quality of the soil to be improved and produce improved soil that is a sediment product by performing the receiving process in the mixing process, the mixing process in the mixing device, the discharging process in the discharge conveyor, etc. It has become.
[0066]
However, when the production and production of sediment products using only a self-propelled soil improvement machine when there are a wide variety of properties and conditions of the raw material (sediment to be improved), there are restrictions on the equipment mounting space, etc. If the performance of the self-propelled soil improvement machine is not always sufficient for the reason, a high-quality earth and sand product cannot be obtained, or in order to obtain it, it may cause an increase in the amount of waste.
[0067]
Therefore, in one embodiment of the earth and sand product production system of the present invention, a stationary pre-processing facility (separately provided) prior to the receiving step, the mixing step, the discharging step and the like in the self-propelled soil improvement machine 200 ( The conveyor 110, 130, 150, 170, the sieving device 120, 140, the crushing device 160, and the magnetic separator 171) are preliminarily subjected to pretreatment such as classification, crushing, and crushing of earth and sand as raw materials. As a result, the self-propelled soil improvement machine 200 has already been pretreated, and as described above, the sediment product based on the relatively high-quality sediment material (residual soil) whose maximum particle size has been adjusted and the lump has been loosened. Therefore, 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 (the one discharged by the conveyor 210 and 1 The amount of the second sieving device 120 is not increased. Accordingly, it is possible to promote waste reuse.
[0068]
(I-1B) Effects of post-processing
Moreover, in one embodiment of the earth and sand product production system of the present invention, a stationary finishing sieve device 180 and a conveyor that are separately provided for the earth and sand discharged in the discharging process of the self-propelled soil improvement machine 200 are provided. At 210, the soil and sand are classified and crushed. Thus, as in the case of (I-1A) above, even if the performance of the self-propelled soil improvement machine 200 is not always sufficient (for example, the method of aligning the particle size distribution of the improved soil is insufficient) It is possible to make an earth and sand product (improved soil) that is supplemented and finally adjusted to the required particle size. Therefore, since a high-quality earth and sand product can be produced without increasing the amount of waste, it is also possible to promote waste reuse.
[0069]
(I-2) Economic improvement by improving plant utilization rate
As described in (I-1A) and (I-1B) above, in addition to the self-propelled soil improvement machine 200, stationary pretreatment equipment (conveyors 110, 130, 150) that performs pretreatment prior to the production process. , 170, etc.), and post-treatment equipment (finishing sieve device 180, etc.) for post-processing the earth and sand discharged outside the machine in the discharging process to constitute a earth and sand product production system, thereby making the earth and sand as a raw material Even when the nature and state of the soil is diverse, it is possible to improve the quality of the earth and sand product without incurring an increase in industrial waste and to promote the reuse of waste. However, at this time, seasonal changes of public works, and the earth and sand product production plant provided with the above-mentioned stationary pretreatment equipment (conveyors 110, 130, 150, 170, etc.) and post-treatment equipment (finishing sieve device 180, etc.) Due to the site conditions, fluctuations in the amount of earth and sand as raw materials brought into the plant are inevitable.
[0070]
On the other hand, there is a tendency to improve the quality of earth and sand products (improved soil in this example) from the background of promoting waste reuse, but not all such trends tend to require less high-quality earth and sand products. In some cases.
[0071]
Therefore, in the present embodiment, the pretreatment equipment (conveyors 110, 130, 150, 170, etc.) and the posttreatment equipment (finishing sieve device 180, etc.) are operated because the earth and sand as raw materials are not brought into the plant. When it is not possible, as shown by a two-dot chain line in FIG. 1, the self-propelled soil improvement machine 200 is moved to another operation site outside this plant (the self-propelled soil improvement machine 200 alone is not a very high quality sediment product (improved soil). ) It is transported to the production site (for example, customer's land near the construction site) and used there.
[0072]
FIG. 3 is a diagram illustrating an example of a work state of soil improvement work performed using the self-propelled soil improvement machine 200 in such another operation site.
In FIG. 3, construction generated soil (excavation residual soil, etc.) generated at, for example, a construction work site or excavation work site is carried into a truck (dump truck) TA by this truck TA, and a known hydraulic excavator E is used from this truck TA. The self-propelled soil improvement machine 200 (in detail, the sieve unit 1) is charged. In the self-propelled soil improvement machine 200, as described above, the input soil is sorted by the sieve unit 1 according to the particle size (sorting process), and the sorted sediment component is received by the lower soil hopper 2 (accepting process). ), It is conveyed toward the rear of the self-propelled soil conditioner by the carry-in conveyor 4 below. Then, a predetermined amount of soil improvement material is added from the soil improvement material supply device 5 to the surface of the transport soil (solidification material supply 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 an earth and sand product (mixing process), and is further transported and discharged (unloaded) to the rear of the self-propelled soil conditioner by the unloading conveyor 8 (discharge process), and piled up at a predetermined improved depot R '. . The piled earth and sand products (improved soil) are loaded onto the truck (dump truck) TB by the wheel loader H and carried to the user site. The self-propelled soil improvement machine 200 may be returned to the original plant shown in FIG. 1 when the improvement target residual soil carried by the truck TA runs out, or moved to another operation site. Then you may continue to work on the improvement work.
[0073]
As described above, in the embodiment of the earth and sand product production system of the present invention shown in FIG. 1, the pretreatment equipment (conveyors 110, 130, 150, 170, etc.) and the posttreatment equipment (finishing sieve device) 180, etc.) cannot operate, at least the self-propelled soil improvement machine 200 can be operated at other operation sites, so that the operation rate can be improved by that amount when viewed from the entire system. Therefore, economic efficiency can be improved.
[0074]
As described above, according to the embodiment of the earth and sand product production system of the present invention, the quality of the earth and sand product (improved soil) can be improved without causing an increase in industrial waste. Use promotion can be planned. Moreover, the operating rate of the earth and sand product production plant can be improved, and economic efficiency can be improved. Thereby, since the collection of the plant installation cost is accelerated, there is an effect that inexpensive improved soil can be produced.
[0075]
In one embodiment of the earth and sand product production system of the present invention, in addition to the self-propelled soil improvement machine 200, conveyors 110, 130, 150, and 170, sieving devices 120 and 140, and a crushing device 160 are used as pretreatment facilities. And the magnetic separator 171 and the finishing sieve device 180 and the conveyors 190 and 210 are provided as post-processing equipment. As described in (I-1A) and (I-1B) above, these pre-processing equipment and Needless to say, the effect of the above (I-1) can be obtained only by providing one of the post-treatment facilities, and the effect of promoting waste reuse can be obtained.
Moreover, in one embodiment of the earth and sand product production system of the present invention described above, the self-propelled soil improvement machine 200 that can be self-propelled as a non-stationary earth and sand product production machine has been described as an example. For example, a trailer-type soil improvement machine that has only wheels that can be towed by being pulled by an appropriate towing vehicle (trailer head), or a separate installation means (such as a crane or other heavy equipment) In addition, a portable soil improvement machine configured to be able to be installed / removed and transported to / from the ground at the installation site may be used. In this case, substantially the same effect is obtained.
[0076]
Furthermore, in one embodiment of the earth and sand product production system of the present invention described above, the primary sieving device 120 moves on a screen with an inclination larger than the grid size of the screen (lattice mesh) (over portion). -Although it was discharged after flowing down (see arrow C), this discharged over portion is crushed into a predetermined size by a crushing device 125 having the same structure as the crushing device 160, as shown by a two-dot chain line in FIG. Then, the crushed earth and sand may be introduced onto the conveyor 130 together. In this case, the amount of waste can be further reduced, and waste reuse can be further promoted.
[0077]
Moreover, in one embodiment of the earth and sand product production system of the present invention, conveyors 110, 130, 150, 170, primary / secondary sieving devices 120 are used as stationary pretreatment equipment (first pretreatment equipment). 140, crushing device 160, and magnetic separator 171. In the case of a relatively small earth and sand product production system, conveyors 130, 150, 170, secondary sieving device 140, crushing device 160, and magnetic separator 171 are provided. It may be omitted that only the conveyor 110 and the primary sieving device 120 are provided, and the under portion selected by the primary sieving device 120 may be directly fed into the sieving unit 1 of the self-propelled soil improvement machine 200.
[0078]
Furthermore, in one embodiment of the earth and sand product production system of the present invention, stationary conveyors 110, 130, 150, 170, 190 are used, but at least a part of them is replaced with a self-propelled conveyor, Or 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 conveyor.
[0079]
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 quality improvement system for improving the soil quality of construction generated soil, as in the above-described embodiment of the present invention.
[0080]
In FIG. 4, construction generated soil (excavated residual soil, etc.) generated at a construction site, excavation site, etc., for example, is carried by a truck (dump truck) T3 into a soil improvement plant which is a sediment product production plant. The earth and sand product production system according to the present embodiment is provided in a plant in order to improve the soil quality of the earth and sand.
[0081]
That is, this earth and sand product production system is configured to load the earth and sand carried by the truck T3 into the earth and sand storage yard N (see arrow), for example, a soil exchanging machine such as a hydraulic excavator (power excavator) 500A, and the earth and sand storage area. N soil is introduced into a self-propelled soil improvement machine 600 to be described later (see arrows). Soil introduction machine, for example, a hydraulic excavator 500B, and the earth and sand introduced by the hydraulic excavator 500B are introduced to the soil. A self-propelled soil improvement machine 600 as a non-stationary earth and sand product production machine that produces (produces) improved soil with improved soil quality by mixing and crushing with an improved material (solidifying material), and introducing the improved soil (Refer to arrow model) Screening device 510 for sorting according to the particle size, and improved soil sorted by this screening device 510 (passed through a screen described later) are introduced (arrows) Conveyor 520 that transports and piles up in improved depot M (see arrow U), and a soil and sand loading machine (unloading machine) that loads the improved soil in improved depot M into truck (dump truck) T4, such as a wheel loader 530 and what was not selected by the sieving device 510 (which did not pass through the screen described later) are introduced (see arrow Y) and conveyed to the crushed object storage site L (see arrow L). A conveyor 540, a self-propelled crushing machine (crusher) 550A that introduces a material to be crushed in the material to be crushed L, re-crushes it, and discharges it to the earth and sand yard K for re-improvement, and the self-propelled soil improvement machine Self-propelled type that introduces what was not sorted by 600 sieving unit 1 (described later) (not passed through a screen described later) (see arrow arrows), re-crushes, and discharges it to the earth and sand yard J for re-improvement Crusher Lasher) 550B.
[0082]
The hydraulic excavators 500A and 500B have substantially the same structure as each other, and are self-propelled that are generally used at a normal construction site. That is, a traveling body 502 provided with a crawler belt 503 as traveling means, a revolving body 501 that is turnably provided on an upper portion of the traveling body 502, and an articulated type that is rotatably connected to the revolving body 501. A front device (= a boom 506 whose base end is pivotally supported by the swing body 501, an arm 505 that is rotatably connected to the boom 506, and a bucket 504 that is rotatably connected to the arm 505). I have.
With such a configuration, the hydraulic excavator 500A scoops the earth and sand on the loading platform of the truck T3 into the bucket 504 and reloads it into the loading earth and sand storage yard N. The hydraulic excavator 500B The earth and sand accumulated in the earth and sand storage yard N is thrown into the earth and sand hopper 2 through the sieve unit 1 (described later) of the soil quality improvement machine 600. When the excavator 500A reloads the earth and sand into the loading earth and sand storage yard, large blocks in the earth and sand are removed by appropriate means (for example, the bucket 504 is a so-called skeleton bucket).
[0083]
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 earth and sand are put into the unit 1, the earth and sand are sorted by the sieve unit 1 according to the particle size (sorting step), and the sorted components (the components that were not sorted will be described later) are placed in the lower earth and sand hopper 2 Introducing and accepting (acceptance process). The earth and sand received by the earth and sand hopper 2 is placed on the conveyance belt of the carry-in conveyor 4 below and conveyed toward the back of the self-propelled soil improvement machine. Then, in the vicinity of the downstream end of the carry-in conveyor 4 in the conveying direction, a predetermined amount of solidifying material is added from the soil quality improving material supply device 5 to the surface of the earth and sand being conveyed (solidifying material supplying step). The mixture is introduced into the mixing device 3. The earth and sand 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). The improved soil is further conveyed to the rear of the self-propelled soil improvement machine by the carry-out conveyor 8, and is finally discharged (unloaded) from the rear portion of the self-propelled soil improvement machine (discharge process).
[0084]
The sieving device 510 includes a so-called vibrating sieve (or a fixed sieve) that can vibrate, similar to 120 and 140 in the embodiment of the earth and sand product production system of the present invention described above. Although not shown in the drawings, for example, by converting the rotational driving force of the excitation motor into a swinging motion of the support frame and the screen via a known conversion mechanism, the discharging process of the self-propelled soil improvement machine 600 is performed. Of the various sized components contained in the improved soil taken out from the machine and put on the screen, the over-sizing component is loosened (disintegration treatment) while being discharged onto the conveyor 540 (after this over-sending component) The processing will be described later), and the under part is dropped from the interstitial space and selected (classification process). By performing such post-treatment, it is possible to obtain improved soil as a relatively high-quality sediment product adjusted to the final required particle size (required by the user as the specification of the sediment product).
[0085]
The conveyor 520 has the same structure as the conveyors 110 and 130 in the embodiment of the earth and sand product production system of the present invention described above together with the conveyor 540, and circulates the conveyor belt with motor-driven driving wheels. By driving, the improved soil for the under introduced from the sieving device 510 onto the transport belt is transported and piled on the improved soil storage M. This improved soil is loaded onto the truck T4 by the wheel loader 530 and carried to the user site.
[0086]
The self-propelled crushers 550A and 550B have substantially the same structure as each other, and are self-propelled that are generally used at normal crushing sites. That is, the self-propelled crushers 550A and 550B include, for example, a traveling body 551 having left and right endless track tracks, and an object to be crushed that is provided on the upper portion and is input from the hopper 552 to a predetermined size. A crushing device (such as a jaw crusher) 553, a feeder 554 for guiding the material to be crushed from the hopper 552 to the crushing device 553, It has. With such a configuration, the self-propelled crushers 550 </ b> A and 550 </ b> B crush the object to be crushed into the hopper 552 to a predetermined size and carry out the crushed object on the conveyor 555.
The self-propelled crusher 550 </ b> A uses an unillustrated charging machine to remove the over-improvement soil component (for example, reki) that is not sorted by the sieving device 510 and is conveyed to the crushed material storage site L by the conveyor 540 ( (It may be further selected to remove wood and the like) It is introduced from the hopper 552, re-crushed, and discharged to the soil improvement place K for improvement by the conveyor 555. The improved soil discharged to the earth and sand storage yard K is again input to the self-propelled soil improvement machine 600 by an input machine (not shown) (not shown), as shown by an arrow, and is improved again. It has become. In other words, the self-propelled crusher 550 </ b> A again performs the plurality of production steps (the sorting step in the sieve unit 1, the receiving step in the hopper 2) of the self-propelled soil improvement machine 600 against the oversized improved soil. Prior to performing the solidifying material supply step in the soil quality improving material supply device 5, the mixing step in the mixing device 3, and the discharge step in the discharge conveyor 8, the crushing is performed as a pretreatment. ing.
The self-propelled crusher 550B performs the sorting to remove the wood and the like that has not been sorted by the sieving unit 1 of the self-propelled soil improvement machine 600 through, for example, a charging machine or a transporting machine (not shown). It may be introduced from the hopper 552, re-crushed, and discharged to the earth and sand storage yard J for re-improvement by the conveyor 555. As shown above, the improved soil discharged into the earth and sand storage yard J is again input to the self-propelled soil improvement machine 600 by an input machine (not shown) (not shown), as indicated by an arrow, and improved again. To be processed. In other words, the self-propelled crusher 550 </ b> B again applies the plurality of production steps of the self-propelled soil improvement machine 600 (the sorting step in the sieve unit 1, the hopper 2) with respect to the excess sand in the sieve unit 1. Prior to performing the receiving step in the above, the solidifying material supplying step in the soil conditioner supplying device 5, the mixing step in the mixing device 3, and the discharging step in the discharge conveyor 8), crushing as pretreatment is performed. To do.
[0087]
Note that, among the facilities and devices constituting the system described above, those that are not self-propelled machines, that is, the conveyors 520 and 540 and the sieving device 351 are all stationary.
[0088]
In the above, the self-propelled soil improvement machine 600 constitutes the non-stationary earth and sand product producing machine described in the claims, and the screening process in the sieving unit 1 of the self-propelled soil improvement machine 600 is as follows. This corresponds to a first sorting step for sorting earth and sand based on particle size at least before the mixing step, and the sieving unit 1 constitutes a first sieving means for performing the first sorting 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 supply step in the soil improvement material supply device 5, a mixing step in the mixing device 3, And the discharge process by the discharge conveyor 8 corresponds to a plurality of production processes. At this time, the self-propelled crusher 550B re-enters the earth and sand product production machine with respect to the earth and sand taken out of the earth and sand product production machine without being sorted in the first sorting step and performs a plurality of production processes again. Prior to this, a second pretreatment facility for pretreatment called crushing is constructed.
[0089]
Further, the sieving device 510 and the conveyor 520 perform stationary and post-processing of the earth and sand discharged outside the earth and sand product production machine in the earth and sand product production machine outside the earth and sand product production machine. The sorting process in the sieve device 510 at that time corresponds to a second sorting process in which the earth and sand discharged out of the earth and sand product production machine is sorted based on the particle size. A second sieving means for performing the second selection step is configured. And before self-propelled crusher 550A throws in the earth and sand product production machine again with respect to the earth and sand which was not sorted by the 2nd sorting process, and performs a plurality of production processes again, the pretreatment called crushing is performed. The stationary third pre-treatment facility is constructed outside the earth and sand product production machine.
[0090]
Also in the earth and sand product production system of this embodiment comprised as mentioned above, the following effects are acquired on the same principle as one embodiment of the earth and sand product production system of the said invention.
[0091]
(II-1) Promotion of waste reuse
(II-1A) Effects of post-treatment
In another embodiment of the earth and sand product production system of the present invention, a stationary post-treatment facility (sieving device) provided separately for the earth and sand discharged out of the machine in the discharging step in the self-propelled soil improvement machine 600. 510 and the conveyor 520) perform post-treatment of earth and sand classification and crushing. As a result, even if the performance of the self-propelled soil improvement machine 600 is not always sufficient (for example, the method of improving the particle size distribution of the improved soil is insufficient), it is compensated for by subsequent processing, and a high-quality sediment product (improved) Sat) can be produced. Therefore, high-quality earth and sand products can be produced without increasing the amount of waste, and waste reuse can be promoted.
(II-1B) Action by pre-treatment before recharging (Part 1)
In another embodiment of the earth and sand product production system of the present invention, the earth and sand taken out of the machine without being sorted in the first sorting step in the sieve unit 1 of the self-propelled soil improvement machine 600 is again applied. In the case where the performance of the self-propelled mixing machine 600 to be recharged is not necessarily sufficient by performing the pretreatment of the crushing by the self-propelled crusher 550B before the self-propelled soil improvement machine 600 is charged. Even if it exists, the high quality earth and sand product (improved soil) which supplemented it and was finally adjusted to the required particle size can be obtained. Moreover, the amount of waste can be further reduced by crushing and re-introducing the earth and sand once taken out of the machine in the first sorting step, and further promotion of waste reuse can be achieved.
(II-1C) Effect of pre-treatment before recharging (Part 2)
Furthermore, in another embodiment of the earth and sand product production system of the present invention described above, the earth and sand not sorted in the second sorting step in the sieving device 510 is automatically re-inserted before being put into the self-propelled soil improvement machine 600 again. By performing pretreatment for crushing with the traveling crusher 550A, as described above, even if the performance of the self-propelled mixing machine 600 to be re-introduced is not always sufficient, it is supplemented with high-quality earth and sand products ( Improved soil). In addition, the amount of waste can be reduced by crushing and re-introducing the soil that has not been sorted in the second sorting step, thereby further promoting the reuse of waste.
[0092]
(II-2) Improving economy by improving plant operation rate
In other embodiments 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 post-processing equipment ( When the sieving device 510 or the like cannot operate, the self-propelled mixing machine 600 is transported to another operation site outside the plant and used there. As a result, at least the self-propelled mixing machine 600 can be operated during this time, so that when viewed from the entire system, the operating rate can be improved by that amount, and the economy can be improved.
[0093]
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 causing an increase in industrial waste. Reuse can be promoted. Moreover, the operating rate of the earth and sand product production plant can be improved, and economic efficiency can be improved. Thereby, since the collection of the plant installation cost is accelerated, there is an effect that inexpensive improved soil can be produced.
[0094]
In another embodiment of the earth and sand product production system of the present invention described above, in the self-propelled soil improvement machine 600, the sieve unit 1 is provided on the upper part of the hopper 2, and the first sorting step by the sieve unit 1 is performed by the hopper 2. Although it performed before the receiving process, it is not restricted to this, You may perform a 1st selection process after the receiving process of the hopper 2. FIG. It is sufficient to perform at least the first sorting step before the mixing step in the mixing device 3. In this case, the same effect is obtained.
[0095]
FIG. 5 is a system configuration diagram showing the overall arrangement of still 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, for example, a base material production system for manufacturing a base material (also referred to as a roadbed material in a road) of a paved road or a dike (including a dike).
[0096]
In FIG. 5, this earth and sand product production system is provided in a base material production plant, which is an earth and sand product production plant, and a construction generated soil from which large blocks have been removed by a screen, a crusher or the like in a preliminary process (not shown). (Residual soil) and the like (see arrow arrow) are stored, the sand hopper 300 to be stored, the conveyor 310 for introducing and transporting the earth and sand from the earth and sand hopper 300 (see arrow arrow H), and a crushed stone of 40 mm or less as aggregate ( Hopper 320 in which C-40) is introduced (see arrow arrow) and stored, hopper 330 in which crushed stone of 20 mm or less (C-20) as aggregate is input (see arrow arrow) and stored, and particle size adjusting material Hopper 340 in which the crushed mountain is input (see arrow G) and stored, and a predetermined amount of material (bone) from these hoppers 320, 330, and 340 according to the purpose of use. (Particle size adjusting material) is cut out (a structure such as the hopper 111 and the conveyor 110 in the embodiment of the present invention may be used, or another known cutting mechanism may be used. See the arrows N, D, and N). Introduce into the conveyor (see arrows ，, ， and ハ), introduce the conveyors 350, 360, 370 and the earth, sand, aggregate and particle size adjusting material conveyed by the conveyor 310 (see arrows ヒ), A self-propelled mixing machine 400 as a non-stationary earth and sand product production machine that generates (produces) and discharges base material (in this example, roadbed material) by mixing and crushing with soil improvement material) and introducing the base material (Refer to the arrow F) and select according to the particle size, and pile up the selected ones in the base material storage area S (see the arrow mark), and the sieving device 380 and the sieving device 380 (not through the screen). Was introduced it did not) those with (see arrow Mi) conveys (details and a later) conveyor 390.
[0097]
The conveyor 310 has substantially the same structure as the conveyors 110, 130, etc. in the embodiment of the earth and sand product production system of the present invention described above, and the conveyor belt is circulated and driven by motor-driven driving wheels. The earth and sand introduced on the conveyor belt is conveyed. The conveyors 350, 360, 370, and 390 have substantially the same structure. And the addition ratio (mixing ratio) of each additive with respect to the earth and sand finally thrown into the self-propelled mixing machine 400 is adjusted in a series of pretreatment steps including addition processing by the hoppers 320 to 340 and the conveyors 350 to 370. As a result, a relatively good quality base material has been completed.
[0098]
The self-propelled mixing machine 400 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 earth and sand, aggregate, and particle size adjusting material (hereinafter referred to as earth and sand, etc., as appropriate) are charged, the earth and sand charged by the sieve unit 1 are sorted according to the particle size (screening process) and sorted. Ingredients are introduced into the lower earth and sand hopper 2 and received (receiving step). 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 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 carrying direction, a predetermined amount of solidifying material is added from the soil quality improving material (solidifying material) supplying device 5 to the surface of the earth and sand being conveyed (solidifying material supplying step). ), These mixtures are introduced into the mixing device 3. The earth and sand and the solidified material introduced into the mixing device 3 are uniformly agitated and mixed by the paddle mixer in the mixing device 3 and discharged onto the belt of the carry-out conveyor 8 as a base material (mixing step). Then, the base material is further conveyed to the rear of the self-propelled mixing machine by the carry-out conveyor 8, and is finally discharged (unloaded) from the rear part of the self-propelled mixing machine (discharge process).
[0099]
The sieving device 380 includes a so-called vibrating sieve (or a fixed sieve) that can vibrate similarly to 120 and 140 in the embodiment of the earth and sand product production system of the present invention described above. Although not shown in the drawings, for example, by converting the rotational driving force of the excitation motor into a swinging motion of the support frame and the screen via a known conversion mechanism, the discharging process of the self-propelled mixing machine 400 is performed. Of the components of various sizes contained in the base material taken out of the machine and put into the screen, the over portion is loosened (disintegration treatment) and discharged onto the conveyor 390, while the under portion is lowered from between the lattices. It is dropped into and sorted (classification process). By performing such post-processing, the base material (the roadbed material in this example) as a relatively high-quality sediment product adjusted to the final required particle size (required by the user as the specification of the sediment product). This base material is piled up in the base material storage site S. The piled earth and sand products are not shown in the figure, but are loaded on a truck (dump truck) by a wheel loader and carried to the user's site. The substrate material for the excess discharged onto the conveyor 390 may be returned to the sieving unit 1 of the self-propelled mixing machine 400 by the conveyor 390 and re-introduced to make a small portion. When it is transported to a place and a certain amount is collected, it may be crushed by a separate means.
[0100]
Of the facilities and equipment that constitute 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 Are all stationary.
[0101]
In the above, the acceptance process in the earth and sand hopper 2 of the self-propelled mixing machine 400, the solidification material supply process in the solidification material supply apparatus 5, the mixing process in the mixing apparatus 3, and the discharge process in the discharge conveyor 8 Corresponds to a plurality of production steps described in the claims. The self-propelled mixing machine 400 constitutes a non-stationary base manufacturing machine and also constitutes a non-stationary earth and sand product production machine.
[0102]
In addition, the hoppers 320 to 340 and the conveyors 350 to 370 are stationary types in which pretreatment of additive addition of earth and sand is performed 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 first pretreatment facility is configured, and the sieving device 380 performs at least one post-treatment of earth and sand classification, crushing, and crushing on the earth and sand taken out from the non-stationary earth and sand product production machine. Configure stationary post-processing equipment to be performed outside.
[0103]
Also in the earth and sand product production system of this Embodiment comprised as mentioned above, the effect similar to one Embodiment and other embodiment of the earth and sand product production system of the said invention is acquired.
[0104]
That is, in still another embodiment of the earth and sand product production system of the present invention, a stationary pretreatment facility provided separately prior to the receiving step, the mixing step, the discharging step, etc. in the self-propelled mixing machine 400. In (the hoppers 320 to 340 and the conveyors 350 to 370), a predetermined amount of additive (C-40, C-20, crushed in this example) is added to the earth and sand as raw materials in advance. Pre-processing is performed. As a result, the self-propelled mixing machine 400 has already been pretreated, and as described above, the addition ratio (mixing ratio) of each additive to the earth and sand is adjusted, so that the base material is in a relatively high quality state. Since the base material that is earth and sand products will be produced on the basis of, the high-quality earth and sand products (base material) can be produced even if the performance is not always sufficient,
Further, in still another embodiment of the earth and sand product production system of the present invention, the earth and sand classified in the stationary sieving device 380 are crushed and crushed with respect to the earth and sand discharged in the discharging process of the self-propelled mixing machine 400. By performing post-treatment, as in the case described above, even when the performance of the self-propelled mixing machine 400 is not necessarily sufficient, the earth and sand product (base material) that has been compensated for and finally adjusted to the required particle size can do.
As described above, high-quality earth and sand products can be produced without increasing the amount of waste, and the reuse of waste can be promoted.
[0105]
Furthermore, also in the present embodiment, as in the embodiment of the earth and sand product production system of the present invention and other embodiments, the pretreatment equipment (hopper 320) is not used because the earth and sand as raw materials are not brought into the plant. ~ 340 etc.) and aftertreatment equipment (sieving equipment 380 etc.) cannot be operated, the self-propelled mixing machine 400 is transported to another operation site (for example, improved soil production site) outside this plant and used there. (Including use as a soil improvement machine). As a result, at least the self-propelled mixing machine 400 can be operated. Therefore, when viewed from the entire system, the operation rate can be improved correspondingly, and the economy can be improved.
[0106]
In yet another embodiment of the present invention, the solidification material is supplied only from the storage tank (solidification material hopper) 34 provided in the self-propelled mixing machine 400. The solidification material may be supplied from a stationary large-capacity solidification material hopper 410 (see a two-dot chain line in FIG. 5) separately provided outside the mixing machine 400, for example, via the screw conveyor 420.
[0107]
In still another embodiment of the present invention, crushed stones (C-40) of 40 mm or less as aggregates are stored in the hopper 320, and crushed stones of 20 mm or less (C-20) as aggregates are stored in the hopper 330. ) Is stored in the hopper 340 and the ground material as the particle size adjusting material is stored, and the roadbed material is manufactured by mixing these with the solidified material. However, the present invention is not limited to this, and the soil quality such as the residual soil in the earth and sand hopper 300 is not so much. If there is no need to adjust the water content ratio and viscosity by crushing, the addition of crushing from the hopper 340 via the conveyor 370 may be omitted as appropriate. In addition, although not within the scope of the present invention, for example, when only the improved soil of the remaining soil is desired, the remaining soil is cut out only from the hopper 300 and put into the self-propelled mixing machine 400.
[0108]
【The invention's effect】
BookAccording to the invention, the non-stationary earth and sand production machine produces earth and sand products based on the earth and sand materials already pretreated by the first pretreatment facility. Even when it is diverse, it is possible to improve the quality of earth and sand products without causing an increase in industrial waste.
[Brief description of the drawings]
FIG. 1 is a system configuration diagram showing the overall arrangement of an embodiment of an earth and sand product production system of the present invention.
2 is a side view showing a detailed structure of a self-propelled soil improvement machine constituting one embodiment of the earth and sand product production system of the present invention shown in FIG. 1. FIG.
FIG. 3 shows an example of a soil condition improvement work performed by using the self-propelled soil improvement machine constituting the embodiment of the earth and sand product production system of the present invention shown in FIG. 2 at another operation site. FIG.
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 still another embodiment of the earth and sand product production system of the present invention.
[Explanation of symbols]
1 sieve unit (first sieve means)
2 earth and sand hopper
3 Mixing device
8 Discharge conveyor
110 Conveyor (first pretreatment facility)
120 Sieve device (first pretreatment equipment)
130 Conveyor (first pretreatment facility)
140 Sieve device (first pretreatment equipment)
150 conveyor (first pretreatment facility)
160 Crusher (first pretreatment facility)
170 Conveyor (first pretreatment facility)
171 Magnetic separator (first pretreatment equipment)
180 Finishing sieve device (post-processing equipment)
190 Conveyor (post-processing equipment)
200 Self-propelled soil improvement machine (sediment product production machine)
210 Conveyor (post-processing equipment)
320-340 Hopper (first pretreatment equipment)
350-370 conveyor (first pretreatment equipment)
380 Sieve device (post-processing equipment)
400 Self-propelled mixing machine (base manufacturing machine, earth and sand product production machine)
510 Sifting device (post-processing equipment)
520 conveyor (post-processing equipment)
550A Self-propelled crusher (third pretreatment facility)
550B Self-propelled crusher (second pretreatment equipment)
600 Self-propelled soil improvement machine (sediment product production machine)

Claims (6)

A soil and sand product production system that produces construction-generated soil having various properties and conditions generated at construction sites as improved soil, wherein the soil-and-sand particle size in the construction-generated soil is adjusted to the maximum grain size. An earth and sand receiving hopper, a paddle type mixing device for mixing an additive into the received earth and sand, and a discharge conveyor for discharging the mixed earth and sand, an accepting step in the earth and sand hopper, an additive in the mixing device A self-propelled earth and sand product production machine that performs a plurality of production steps including a mixing process and a discharge process at the discharge conveyor, and the self-propelled type disposed on the sediment input side to the self-propelled earth and sand product production machine The maximum particle size of the self-propelled earth and sand product production machine is determined by at least one of classification, pulverization, and crushing of the particle size of the construction generated earth that is thrown into the earth and sand hopper of the earth and sand product production machine Sediment production system, characterized in that a first pre-processing equipment stationary adjusting. The earth and sand product production system according to claim 1, wherein the particle size of the improved soil disposed on the discharge side of the self-propelled earth and sand product production machine and discharged from the self-propelled earth and sand product production machine is classified, crushed and crushed. The earth and sand product production system provided with the stationary 1st post-processing equipment which adjusts to the required particle size by at least 1 process among these . 3. The earth and sand product production system according to claim 1, wherein the earth and sand product production machine includes, as one of the plurality of production processes, a first sorting step of sorting earth and sand based on particle size at least before the mixing step. A self-propelled earth and sand product obtained by taking in the earth and sand taken out from the earth and sand product production machine by the first sieve means, and classifying, crushing and crushing the earth and sand. An earth and sand product production system, further comprising a second pretreatment facility for adjusting the maximum particle size to be introduced into a production machine . In claim 2 sediment production system according, wherein the post-processing equipment is provided with a second sieve means for performing a second sorting step of sorting based sediment discharged into the sediment product produced outside the particle size, before Symbol first There is further provided a third pretreatment facility that adjusts the sand that has not been sorted in the second sorting step to the maximum particle size that is input to the self-propelled earth and sand product production machine by at least one pretreatment among classification, crushing, and crushing . Sediment product production system characterized by that.   The earth and sand product production system of any one of Claims 1-4 WHEREIN: The said earth and sand product production machine mixes the earth and sand which were received with the said earth and sand hopper, and the said additive with the said mixing apparatus, The soil quality of the said earth and sand received An earth and sand product production system, characterized in that it is a non-stationary soil improvement machine that improves soil and improves soil.   5. The earth and sand product production system according to claim 1, wherein the earth and sand product production machine receives the earth and sand and the particle size adjusting material or the aggregate with the earth and sand hopper, and the received earth and sand and the particle size adjusting material or An earth and sand product production system, which is a non-stationary base manufacturing machine that mixes aggregate and the additive with the mixing device to form a base material such as a road or a dike.

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