JP3375558B2 - Self-propelled soil improvement machine - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a machine used for improving soft ground and strengthening the ground, and improving the quality of earth and sand to meet a predetermined purpose. The present invention relates to a self-propelled soil improvement machine that performs soil improvement while traveling appropriately.

[0002]

2. Description of the Related Art For example, when burying gas pipes, water and sewage works, other road works, and foundation works, it is desirable to backfill the soil generated by excavation as it is, but since the soil generated is not suitable for backfilling. , The generated soil will be unloaded and new high quality soil will be imported to fill the excavation site. For example, if the soil itself is soft, such as clay soil with extremely small particle size and high viscosity, or soil that is hard to solidify due to excessive weathering, ground subsidence will occur when backfilling as it is. Etc. may occur. However, the poor soil generated by excavation at construction sites is a type of industrial waste, so the location of the waste is restricted. Therefore,
There is a strong demand for converting poor soil into reusable resources. In this way, in order to reuse reusable soft soil that may cause ground subsidence when the soil generated by excavation is backfilled, for example, soil that mainly contains lime or cement The improvement material is mixed with earth and sand and solidified. As a result, the soil can be converted into high-quality soil that is preferably used for backfilling the excavated place.

The soil improvement treatment for solidifying the soil is carried out by mixing the soil and the soil improving agent. As a typical mixing method of the soil and the soil improving agent, a mixing method using a stirring means is used. And a crushing method provided with a rotary impactor are conventionally known. The mixing method is
A stirring means is provided in the tank, and the earth and sand and the soil conditioner are put into this tank, and the stirring means uniformly stirs and mixes them. The stirring means performs batch type processing so as to exert only the function of stirring and mixing the inside of the tank, and the screw type stirring means is provided to stir and mix the soil and the soil improving agent in a predetermined direction. In some cases, continuous treatment is carried out by continuously supplying earth and sand and a soil improvement material, and continuously discharging the produced improved soil. A crushing type soil improvement machine as another method of soil improvement treatment is disclosed in, for example, Japanese Patent Application Laid-Open No. 9-195265. This crushing type soil improvement machine is equipped with a crusher consisting of a rotary impactor so that the earth and sand and the soil improvement material are dropped from the upper position toward the rotary impactor, and the rotary impactor is rotated during this period. By doing so, the earth and sand and the soil conditioner are hit and crushed.

[0004] Here, the soil improvement machine by the crushing method,
It is constructed so that it can be carried directly to the construction site and self-propelled to improve the soil quality. For this reason, the earth and sand hopper, the soil improvement material hopper, and the crushing device are installed on a traveling means provided with a crawler track, and the entire machine is made compact. Therefore, when it is carried into a construction site or the like, it is loaded on a trailer, and at the construction site or the like, it is self-propelled to the vicinity of an excavation site or a backfill site to perform a predetermined soil improvement treatment. This self-propelled crushing method soil improvement machine does not perform stirring and mixing, but rather the quality of the improved soil produced in terms of crushing by impact, that is, the degree of mixing of sand and soil improvement material. Although it is inferior, it is advantageous in terms of production cost of improved soil and traffic obstacles.

On the other hand, the mixing type soil improvement machine is
It is generally configured as a large-scale plant suitable for treating a large amount of sand using a large mixing device and a soil improvement hopper with an extremely large volume. Is. Therefore, in such a large-scale plant, it is possible to efficiently produce a high-quality improved soil in which the soil and the soil improvement material are mixed very uniformly, but the improved soil produced is collected from a wide area and the produced improved soil also covers a wide range. Since it will be supplied, the transportation cost will be extremely high and the dump truck will pass frequently, which will cause problems such as traffic obstacles. In addition, due to the widening of the accumulation space for soil and improved soil, such large-scale plants should be installed in urban areas where excavated soil is generated and the improved soil is consumed for backfilling, etc. It is difficult to install, which adds to the cost for transportation.

[0006] Therefore, when soil improvement is carried out at a plant facility, it is desirable that the treatment is carried out at a position as close as possible to the urban area where the soil is to be improved and where the soil improvement material is also consumed. Becomes In a soil improvement treatment facility, a large amount of earth and sand is not loaded all at once, and it generally takes some time for the treatment facility to be filled with soil and soil to be subjected to soil improvement treatment.
Therefore, if you set a large number of yards for accumulating sediment and use the soil improvement machine between these multiple yards,
The operation efficiency of the soil improvement machine will be improved. Further, since the soil improvement treatment processes the accumulated soil to produce the improved soil, it can be used both as a soil accumulation site where the soil improvement treatment should be performed and as an improved soil depositing place. As a result, the space of the treatment facility itself can be effectively utilized and the space efficiency is also improved.

However, in order to perform the soil improvement treatment in the small yard as described above, it is necessary to transport the soil improvement machine between the yards as appropriate. Also, in order to efficiently use the space in each yard, without using a belt conveyor,
It is necessary to be able to perform all the treatments only with the soil improvement machine. Therefore, it is necessary to make the soil improvement machine small and compact and to have mobility, to make the soil improvement machine self-propelled, and to make it portable using a trailer.

[0008]

By the way, a trailer is used to transport the soil improvement machine. However, since the trailer travels on a general road, the vehicle height during transportation is limited. Here, regardless of whether the mixing method or the crushing method is used, in the overall structure of the soil improvement machine, the earth and sand hopper and the soil improvement material hopper, which are mechanisms for supplying earth and sand and the soil improvement material, are It will be placed at a position higher than the mechanism of stirring and mixing the soil and the soil improvement material.

Since excavated soil or other earth and sand is sequentially supplied to the earth and sand hopper by a belt conveyor, a hydraulic excavator, etc., the earth and sand supplied intermittently in the earth and sand hopper is continuously conveyed by a conveyor. It only needs to have a buffer function, and although it is necessary to store a certain amount of earth and sand, it does not require a large volume and can be made smaller and more compact. On the other hand, the soil improving material is stored in the soil improving material hopper in advance, and is consumed by sequentially adding the soil improving material to the soil. Therefore, when the soil improvement material hopper becomes empty, the soil improvement material is newly replenished. Generally, the soil conditioner is filled in a flexible container, and the soil conditioner hopper is replenished from this flexible container. If the volume of the soil quality improving material hopper is small, the soil quality improving material must be replenished frequently, and the soil quality improving process must be stopped during the replenishment work, which significantly lowers the work efficiency. Therefore, from the viewpoint of work efficiency, it is necessary to make the volume of the soil improvement material hopper as large as possible, which results in an extremely high height position of the soil improvement material hopper.

From the above, when the soil improvement machine equipped with the soil improvement hopper capable of storing a large amount of the soil improvement material is transported by the trailer, the soil improvement hopper must be removed. Further, when the soil is improved, it is necessary to install the soil improvement material hopper again. In particular, the soil quality improving material hopper is not limited to a simple container, and it is necessary to provide appropriate driving means such as a constant amount feeding means for supplying the soil quality improving material in fixed amounts, a stirring means in the hopper, and the like. In addition, there is a risk of damaging these driving means during the installation work. Further, when at least a part of these drive means is of a hydraulic drive type, work such as attachment / detachment of hydraulic pipes is required. Therefore, the work of attaching and detaching the soil improving material hopper from the soil improving machine is very troublesome, and it takes a long time.

The present invention has been made in view of the above points, and an object of the present invention is to mount a soil quality improving material hopper having a large volume and transport the soil quality improving material hopper without removing it. To do so.

[0012]

In order to achieve the above-mentioned object, the present invention provides a traveling means, a main body frame provided on the traveling means, and a earth and sand and soil improvement material provided on the main body frame. Soil quality improving means for mixing and, earth and sand hopper provided on one side in the longitudinal direction of the main body frame,
Arranged on the main body frame via the top plate and the columns
This is the base part that is provided on the base plate and has an open top.
It is interposed between the base part and the top plate part, and is composed of an elastic member.
Storage tank for soil improvement material,
Provided at multiple locations around the top plate of the storage tank
The mounting plate and the plurality of mounting plates on the base plate.
A plurality of guide tubes provided at the facing positions
One end is slidably inserted into the guide tube, and the other end is
A plurality of support rods connected to the mounting plate and the elastic member are extended.
To be in a lengthened state or a reduced state,
A stopper pin for fixing the support rod to the guide tube.
And a feeder for supplying the soil improvement material from the storage tank , and the earth and sand hopper for transferring the earth and sand supplied from the earth and sand hopper and the soil improvement material supplied from the feeder to the soil improvement treatment means. A self-propelled soil improvement machine characterized by comprising a carry-in conveyor provided below the.

Preferably, the elastic member forming the peripheral body of the storage tank has a bellows structure. More preferably, the bellows structure is configured by fixing a plurality of skeletons at predetermined pitch intervals in the vertical direction so as to surround at least one of the inner and outer peripheries of a flexible tubular sheet. To do. Also preferably, the base unit before Symbol
It is mounted on Mounting unit, One or said the guide tube, wherein the elastic member is provided with locking means for holding selectively said support rod to be either extended state and the reduced state.

In order to achieve the above-mentioned object, the present invention also provides a traveling means, a main body frame provided on the traveling means, and a soil material which is provided on the main body frame and which mixes earth and sand with a soil improvement agent. The improvement processing means, the earth and sand hopper provided on one longitudinal side of the main body frame, the upper tank whose upper end is closed and whose lower end is open, and the book via a column.
It is installed on the base plate placed on the body frame and the upper end is open.
The lower tank that can be opened and fitted with the upper tank, and this
Flexible sheet interposed between the base portion and the top plate portion
And a shape-retaining cylinder mounted on the lower outer periphery of the upper tank,
Soil improvement material storage tank with
Mounting plates provided at multiple locations on the outer periphery of the upper tank in
And a position facing the plurality of mounting plates on the base plate.
And a plurality of guide tubes provided in each
It is slidably inserted into the guide tube and the other end is attached to the mounting plate.
A plurality of support rods connected to each other and the flexible sheet are extended.
To be either a closed state or a reduced state.
Stopper pin for fixing the support rod to the guide tube
And a feeder for supplying a soil improvement material from this storage tank, and a soil supply material supplied from the sediment hopper and the soil improvement material supplied from the feeder, so as to be transferred to the soil improvement processing means, A self-propelled soil improvement machine characterized by comprising a carry-in conveyor provided below.
In .

[0015]

[0016]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. 1 and 2 show the overall construction of the self-propelled soil improvement machine. First, in FIG. 1, 1 is a lower traveling body, and the lower traveling body 1 is configured to include a crawler type means having a crawler belt 1a. The lower traveling body 1 shown in the figure is a crawler type traveling means. However, in consideration of the case where sediment is intermittently loaded, it is possible to prevent the entire vehicle body from becoming unstable due to impact load when depositing sand. This is to prevent it. Therefore, in the case where the earth and sand are continuously supplied by a conveyor or the like, it may be configured by a wheel type traveling body.

A main body frame 2 constituting a chassis is connected to the lower traveling body 1, and the main body frame 2 is provided.
Are equipped with various mechanisms and devices. In the main body frame 2, when the left side of FIG. 2 is the front of the machine, the material supply unit 3 is arranged at the front position. Further, the processing mechanism section 4 is mounted on the rear side, and the improved soil discharging section 5 is provided further toward the rear side than the processing mechanism section 4. The improved soil discharging section 5 extends obliquely upward from the lower position of the processing mechanism section 4, and at the upper position of the processing mechanism section 4, a machine room containing machines such as an engine, a hydraulic pump, and a directional control valve unit. 6 is provided.

The material supply unit 3 is for supplying a material for soil improvement, which is composed of earth and sand and a soil conditioner, and the mixing ratio of the earth and sand and the soil conditioner to be supplied is controlled. It is like this. For this purpose, a carry-in conveyor 10 is provided, and in the carrying direction of the carry-in conveyor 10, the earth and sand hopper 20 is located on the most upstream side, that is, on the front side of the machine.
However, the soil improvement material hopper 30 is installed on the rear side. In addition, by measuring the amount of sediment carried by the carry-in conveyor 10,
The amount of the soil quality improving material supplied from the soil quality improving material hopper 30 is adjusted according to the measured amount.

As is clear from FIG. 3, the carry-in conveyor 10 is provided so as to be inclined so as to stand up from the end of the main body frame 2 by a predetermined angle. The carry-in conveyor 10 has a conveyor belt 11, and the conveyor belt 11 is a frame 1.
It is provided by being wound between the drive wheel 13 supported by 2 and the driven wheel 1, and a known tension adjusting mechanism is provided on the driven wheel 14 side. In order to support the transport surface of the transport belt 11, guide rollers 15 are provided below the transport surface at a predetermined pitch. Further, the regulation plate 1 is provided at a position upstream of the mounting portion of the earth and sand hopper 20 on both left and right sides of the transportation surface of the transportation belt 11.
6 and 16 are provided, and the regulation plate 16 determines the carrying height of the carrying belt 11, and the carrying amount of the earth and sand can be controlled by this. The downstream side of the transfer conveyor 10 is low, and the transfer conveyor 10 is provided in an inclined state of rising obliquely upward toward the upstream side.

The earth and sand hopper 20 is constructed as shown in FIGS. The earth and sand hopper 20 is made of a substantially frame-shaped member, and its upper and lower sides are open. The earth and sand hopper 20 has its upper end fixedly provided to a support member 18 provided on a support post 17 standing upright on the main body frame 2, and its lower end corresponds to the inclination angle of the carry-in conveyor 10. Angled. Of the four circumferential wall surfaces forming the earth and sand hopper 20, the wall surface 20a located on the downstream side of the carry-in conveyor 10 faces the surface of the conveyor belt 11 with a very small gap, and on both sides. The wall surfaces 20b and 20c are in contact with the regulation plate 16 of the carry-in conveyor 10. As a result, the end position of the carry-in conveyor 10 except for the upstream side is the wall surface 2 of the earth and sand hopper 20.
It is almost closed by 0a, 20b and 20c.

The carry-in conveyor 10 in the earth and sand hopper 20.
The lower end portion of the wall surface 20d located on the upstream side in the feeding direction is disposed at substantially the same height as the height of the regulation plate 16,
As a result, a sediment supply port 21 is formed in the sediment hopper 20. Further, a pressure roller 22 having a large number of pressing claws 22a on the outer peripheral surface is provided on the outer surface side (or inner surface side) of the wall surface 20d of the earth and sand hopper 20, and the pressure roller 22 has its own weight or A predetermined pressing force can be applied to the sand and sand that has passed through the supply port 21 by an urging means such as a spring. Therefore, a certain amount of earth and sand is supplied from the earth and sand hopper 20 by the conveying speed of the conveyor belt 11 on the carry-in conveyor 10, the opening area of the supply port 21, and the pressing force of the pressure roller 22.

The earth and sand hopper 20 is not directly supplied with the earth and sand, but the sieving unit 23 eliminates solid foreign matters such as rocks, concrete, and metal lumps, and reduces the bulk density of the earth and sand so that A sufficient amount of air is included and then dropped onto the conveyor belt 11. In this way, by lowering the bulk density of the earth and sand, it is possible to smoothly carry the earth and sand by the carry-in conveyor 10 with a light load. Therefore, as shown in FIGS. 6 and 7, the sieving unit 23 has a frame body 24, and the lattice members 25 are arranged in the frame body 24 at predetermined pitch intervals in the vertical and horizontal directions. Therefore, a mesh is formed by the vertical and horizontal pitch intervals of the grid member 25, and the mesh size particle size is selectively introduced into the earth and sand hopper 20, and the larger size particles are placed on the grid member 25. It will remain.

Here, the sieving unit 23 may be constructed as a fixed sieve, but it is preferably a vibrating sieve. Although there are various modes for constituting the vibrating screen, in the illustrated one, the screen unit 23 is vibrated in the vertical direction. For this,
The sieving unit 23 is supported by the support member 18 so as to be vertically vibrable. Spring receiving members 26 are fixedly provided at the four corners of the frame 24, and springs 27 are interposed between the supporting member 18 and the spring receiving members 26 to support the frame 24. It is elastically supported by the member 18. A vibrating means 28 is connected to the lattice member 25, and the vibrating means 28 is configured to vertically move the lattice member 25 mounted on the support frame 24. The vibrating means 28 is a motor (electric motor or hydraulic motor).
28a has a vibrating member 28b that is rotationally driven by the vibrating member 28b.
An end portion of a vibrating shaft (not shown) provided at 5 is inserted and the vibrating member 28b is rotated to vibrate the vibrating shaft and the grid member 25 connected thereto.

Next, as shown in FIGS. 8 to 13, four soil-improving-material hoppers 30 are arranged upright on the main body frame 2 as shown in FIGS. Alternatively, it is supported by a frame-shaped base plate 32 provided on three (3) columns 31. Therefore, the carry-in conveyor 10
Extends to a position between the columns 31 and 31 and a predetermined amount of the soil improvement material is added to the earth and sand supplied from the earth and sand hopper 20 on the carry-in conveyor 10. Here, the soil improvement material is mixed with the earth and sand in order to improve or improve the soil quality, and the soil improvement material is used according to the purpose of each soil improvement and reformation. For example, when the soil is used for soil improvement or backfilling, lime, cement, or a mixture of these with various additives for promoting solidification is used. Further, when the ground is modified or the acid soil is modified, an appropriate soil improvement material is supplied.

The soil improvement material hopper 30 includes a storage tank 33 for storing a predetermined amount of soil improvement material, and the storage tank 33.
And a feeder 34 which is continuously provided in the lower part of the container and supplies a soil improvement material by a predetermined amount. Here, the storage tank 33
Has a substantially cylindrical shape, and has a space for storing the soil improvement material inside, and its height dimension is variable. Therefore, in the storage tank 33, the lower side is installed on the base plate 32, and the base portion 35 having the upper end opened,
It comprises a top plate portion 36 and a bellows portion 37 provided between the base portion 35 and the top plate portion 36. The base portion 35 and the top plate portion 36 are formed of a hard member such as a steel plate, and the bellows portion 3
7 is capable of expanding and contracting in the vertical direction, and when the bellows portion 37 is extended, the operating state shown in FIG. 8 is obtained.
A large amount of soil improvement material can be stored inside. Further, FIG. 10 shows the storage state of the bellows portion 37, and in this storage state, the height dimension of the soil improvement machine is shortened, as will be described later. Therefore, the bellows part 3
7 functions as height adjusting means of the soil improvement material hopper 20.

The base portion 35 of the storage tank 33 is
As shown in FIG. 11, it is composed of a bottom plate 35a and a peripheral body portion 35b, and the base portion 35 has a stirring member 3 in the hopper.
8 are provided. The agitating member 38 in the hopper is connected to the agitating blade 38a arranged near the bottom plate 35a inside the base portion 35, and is connected to the agitating blade 38a.
And a motor 38c for rotating and driving the rotating shaft 38b. The agitating member 38 in the hopper is provided in the base portion 35 for supplying the soil improving material from the storage tank 33 to the feeder 34.
This is for smoothly supplying the soil improvement material to the feeder 34 from the communication hole 39 provided in the bottom plate 35a. An inspection door 40 that can be opened and closed is provided on the peripheral body portion 35b of the base portion 35. In the figure, 39a is an outlet for the soil improvement agent, and when the soil improvement agent still remains in the storage tank 33 even after the soil improvement treatment is completed, the soil improvement agent is discharged. Is for
The outlet 39a can be opened and closed. In order to take out the soil improvement material from the storage tank 33 more smoothly, it is desirable that the take-out ports 39a are provided at a plurality of positions on the bottom plate 35a.

The top plate portion 36 is formed of a plate body whose outer peripheral side is bent downward, and a substantially circular opening 36 is formed in the center thereof.
a is formed, and an opening / closing lid 41 that can be opened at both sides is formed above the opening 36a. Further, at least three hook engaging members 42 are provided on the outside of the opening / closing lid 41.
It is provided in some places. Then, as shown in FIGS. 12 and 13, a cutter 43 is provided below the portion of the top plate 36 where the opening / closing lid 41 is provided so as to be supported by the cutter support portion 43a. Here, the soil quality improving material is filled in a flexible container, and the soil quality improving material is directly supplied from the flexible container to the storage tank 33. The cutter 43 is provided to cut the lower end portion of the flexible container. ing. In order to prevent the soil improvement material from reliably flowing into the storage tank 33 from the flexible container torn by the cutter 43, and preventing it from overflowing or scattering around, the support arm 43a to which the cutter 43 is attached is It is provided at a position that is a predetermined depth from the top 36.

Further, the bellows part 37 is composed of a flexible sheet 37a having a high strength and a ring-shaped skeleton 37b which is fixed to the outer periphery of the flexible sheet 37a with a predetermined pitch interval in the vertical direction. It serves as a shape-retaining member for preventing the entire bellows portion 37 from bulging outward when filled with the improving material. The lower end of the flexible sheet 37a is fixed to the upper end of the base portion 35, and the upper end is fixed to the inner surface of the top plate 36.

Here, as a concrete structure of the bellows portion 37, as shown in FIG. 14, for example, the flexible sheet 137 is used.
a is bent in the vertical direction in a zigzag state, and the support 13
7b can be configured so as to be fixedly provided to the direction changing portion by each bending. Further, as shown in FIG. 15, the supporting ribs 237b are attached to the flexible sheet 237a at a predetermined pitch interval. The supporting ribs 237b are fixed to the flexible sheet 237a by folding loop portions 237c.
Is provided in the folded loop portion 237c.
7b may be fixedly provided. Furthermore, FIG.
As shown in FIG. 6, the flexible sheet 337a is attached to the support frame 337.
When fixing b, the fulcrum fixing portion 337c made of a sheet or metal fitting may be attached to the outer surface of the flexible sheet 337a.

As long as the bellows portion is composed of the flexible sheet and the fulcrum, various structures other than the above three structures can be used. Although the bellows portion 137 having the configuration shown in FIG. 14 has a simple structure, it has a flexible sheet 137.
There is a possibility that the soil improvement material may accumulate in the outwardly projecting portion of the zigzag shape of a. To surely prevent the soil improvement material from accumulating in the bellows portion, the bellows portion 3 having the structure shown in FIG.
37, the flexible sheet 337a may be given a tension in the operating state. However, the structure of the bellows portion 337 of FIG. 16 is more complicated than that of the bellows portions 137 and 237 of the configurations of FIGS. 14 and 15. Here, since the bellows part has flexibility as a whole, even if it collects in the zigzag part or the bent part, it is possible to easily drop the soil improvement material that has accumulated in the middle if an impact is applied to it. You can Therefore, the bellows portion having any structure can be adopted.

Since the soil quality improving material hopper 30 is provided with the expandable and contractible bellows portion 37 in the middle thereof, the bellows portion 37 is extended to the operating state of FIG. 8 and the retracted state of FIG. Need to be fixed selectively. For this reason, the top plate 36 has a plurality of circumferential positions (in this example, the outline 1
20 ° mounting plate 36b is provided so as to extend laterally across three) at intervals, each of these mounting plates 36b
A support rod 45 is vertically installed on the. Further, guide cylinders 46 are erected on the base plate 32 at positions corresponding to the vertical positions of the respective support rods 45, and the support rods 45 are slidably inserted into the guide cylinders 46, respectively. There is. As a result, the guide cylinder 46 and the support rod 45 are in a telescopically fitted state, and the support rod 45 is attached to the guide cylinder 4.
It is possible to penetrate through 6 and project downward.

This is for fixing the bellows portion 37 at one of two positions, that is, an extended operating state and a retracted retracted state. The support rod 45 has two pin insertion holes vertically provided. 45a and 45b are provided, and the guide cylinder 4
6 has a pin insertion hole (not shown) at one position at a predetermined position.
Has been drilled. When the stopper pin 47 is inserted with the pin insertion hole 45a below the support rod 45 aligned with the pin insertion hole of the guide cylinder 46, the bellows portion 37 is held in the extended operating state. On the other hand, when the pin insertion hole 45b above the support rod 45 is aligned with the pin insertion hole of the guide cylinder 46 and the stopper pin 47 is inserted, the bellows portion 37 is held in the retracted state. Here, the bellows part 37
In the retracted state, the cutter 43 provided on the top plate portion 36 side and the support arm 43a supporting the cutter 43 are at positions not interfering with the stirring blades 38a of the hopper stirring member 38 provided on the base portion 35 side. It is desirable that the distances of are the closest to each other within a range where they do not interfere with each other.

The feeder 34 connected to the storage tank 33 is for supplying the soil conditioner with a regulated supply amount. That is, as shown in FIGS. 17 to 19, the feeder 34 has a casing 48 fixed to the lower surface of the communication hole 39 in the storage tank 33, and the casing 48 has an inflow port 49a communicating with the communication hole 39 and a downward direction. It has an open supply port 49b, and the wall surface of the intermediate part thereof is an arc-shaped fixed amount supply part 49c. The rotor 50 is fitted into the rotary shaft 51 inside the fixed amount supply part 49c. The rotor 50 is provided so as to be rotationally driven by the rotary shaft 51. The rotor 50 has a fixed quantity supply unit 49c.
A plurality of partition walls 50a that are substantially in sliding contact with the inner wall surface of the rotor are provided radially, and every time the rotor 50 rotates by a predetermined angle, the soil improvement material corresponding to the space between the adjacent partition walls 50a, 50a is separated. Will be done. Therefore, every time the rotor 50 rotates by a predetermined angle, the soil improvement material corresponding to the volume of the space is supplied in a fixed amount. Therefore, by controlling the rotation speed of the rotor 50, it is possible to control the supply amount of the soil improvement material, that is, the higher the rotation speed of the rotor 50, the greater the supply amount of the soil improvement material. For this reason, a rotary shaft 51 is led out from the casing 48, and a pulley 51a is provided so as to be connected to an end of the rotary shaft 51. The pulley 51a and the output shaft 52 of the motor 52 are provided.
A power transmission member 53 including a transmission belt and the like is provided between the power transmission member 53 and a.
Is installed. Here, it is desirable to use a variable speed electric motor as the motor 52 in order to strictly control the supply amount of the soil improvement material due to the rotation of the rotor 50. However, the rotational speed is variable by a flow rate adjusting valve or the like. If so, a hydraulic motor may be used.

In the soil improvement material hopper 30 constructed as described above, the storage tank 33 is filled with the soil improvement material, but this filling operation is performed from the flexible container. Since the soil improvement material hopper 30 is located at a high place, the opening / closing lid 41 provided on the top plate portion 36 is opened, the flexible container is suspended, and the opening / closing lid 41 is inserted into the storage tank 33. And cutter 4
The lower end should be torn at 3.
For this reason, the main body frame 2 is provided with a crane 54 at a position on one side thereof. As shown in FIG. 20, the crane 54 has a swinging portion 54a on the main body frame 2.
And a supporting member 54b is erected on the turning portion 54a,
A base end portion of a telescopic arm 54c is pivotally supported by the support member 54b so that the cylinder 54d can be lifted and lowered. A wire 56 connected to the hook 55 is connected to the end of the arm 54c, and the hook 55 can be moved up and down by winding the wire 56 up or down.

As described above, the earth and sand and the soil improving material are conveyed by the conveyor belt 11 which constitutes the carry-in conveyor 10. The end portion of the conveyor 10 conveys the earth and sand and the soil improving material in the processing mechanism section 4. It is connected to the processing tank 60 as a mechanism for stirring and mixing. The treatment tank 60 is composed of a rectangular container arranged in the longitudinal direction of the main body frame 2, that is, in a substantially horizontal direction, and at the front and rear positions thereof, mounting portions 61 that project to the left and right are respectively provided in series. Reference numeral 61 is fixedly installed on the upper surface of the main body frame 2 with bolts or the like. Therefore, FIGS. 21 to 24 show the internal structure of the processing tank 60 that constitutes the processing mechanism unit 4.

First, as is clear from FIGS. 21 and 22, an inlet 62 which constitutes an inlet is formed in the upper portion on the front side of the processing tank 60, and an outlet which constitutes an outlet is formed in the lower portion on the rear side. 63 are connected to each other, and the other parts are sealed. As shown in FIGS. 23 and 24, two paddle mixers 64 are provided in parallel in the processing tank 60. The paddle mixer 64 has a rotary shaft 65, and a paddle 66, which is a blade provided intermittently as a stirring / transferring member, is provided on the rotary shaft 65 at a predetermined angle (for example, 9
The paddle 66 is rotationally driven by rotating the rotary shaft 65 to agitate the inside of the processing tank 60 and guide it into the processing tank 60. The earth and sand and the soil conditioner are agitated and uniformly mixed, and then transferred toward the discharge port 63 side. Then, this transfer amount changes according to the angle of the paddle 66.

As described above, in this embodiment, two paddle mixers 64 are provided, and the rotating shaft 65 is provided with the paddles 66.
Is provided at a position having a phase of 90 °, the number of the paddle mixers 64, the arrangement interval of the paddles 66, etc. are determined by the relationship between the height and width of the processing tank 60. For example, if the height of the processing tank 60 is increased, a large paddle with a large turning radius can be attached.
The number of paddle mixers 64 may be small, but the processing tank 60
When the height dimension of the paddle is reduced and the width of the paddle is increased, the radius of gyration of the paddle becomes smaller, so the number of paddle mixers is increased. Therefore, in order to have a predetermined stirring efficiency,
The size of the processing tank 60 and the number of paddle mixers 64 may be set based on the relationship between the width dimension of the main body frame 2 and the height dimension of the entire vehicle. However, in order to smoothly and efficiently mix, stir and transfer the soil and the soil improving material in the treatment tank 60, the number of the paddle mixers 64 should be an even number, and the adjacent paddle mixers 64, 64 should be mutually It is desirable to set to rotate in the opposite direction.

Since the processing tank 60 is installed on the main body frame 2 together with other devices and the like, there are restrictions on the overall size thereof, and in order to efficiently perform stirring and mixing in this restricted container. , Paddle mixer 64 is used. Then, both ends of the rotary shaft 65 of each paddle mixer 64 have bearings 6
7, 67 is rotatably supported, and the tip of the rotary shaft 65 is a drive unit 6 provided at the front end of the processing tank 60.
8 extends into the housing. A transmission gear 69 is connected to the tip of each rotary shaft 65, and both transmission gears 6
9,69 are in mesh with each other. One of the transmission gears is connected to the output shaft of a hydraulic motor 70. By rotating the hydraulic motor 70, the two rotary shafts 65, 65 provided with the paddles 66 are simultaneously moved in opposite directions. Is driven to rotate. Here, the bottom of the processing tank 60 has a curved surface shape that substantially coincides with the rotation trajectory of the paddle 66, so that sediment and soil improvement material are prevented from accumulating in the corners of the lower end of the processing tank 60. There is.

As described above, the processing tank 60 has the inlet 62.
Although the processing tank 60 has a closed shape except for the discharge port 63, solid foreign matter and the like enter the processing tank 60 to hinder the smooth operation of the paddle mixer 64, or the operation of the paddle mixer 64 in extreme cases. It may stop. When a solidifying material such as lime or cement is used as the soil quality improving material, if the soil quality improving material is left in the treatment tank 60, the inner surface of the treatment tank 60, the paddle 66, or the like may stick. There is a nature. In addition, paddle 66
Since it wears out over a long period of time, it must be repaired or replaced as appropriate. From the above, it is necessary to inspect the inside of the processing tank 60 and repair it if necessary. For this purpose, an opening / closing door 71 is provided at an appropriate position on the side surface of the processing tank 60, and an inspection hole 72 having a lid is attached to the upper portion thereof. Further, if necessary, an opening / closing door may be provided on the upper portion and the lower surface may be opened / closed.

In the treatment tank 60 having the above structure, the soil and sand and the soil conditioner introduced through the inlet 62 are uniformly stirred and mixed by the action of the paddle mixer 64, and are transferred toward the outlet 63. In the meantime, improved soil is produced.
The improved soil produced in this manner is discharged from the discharge port 63 to the improved soil discharging section 5 by its own weight. Here, the improved soil discharging section 5 has a carry-out conveyor 80.

Next, FIG. 25 shows a state in which soil improvement processing is being performed using the soil improvement machine. The figure shows that the soil improvement machine is arranged in a small yard and the soil accumulated in this yard is improved in advance. To improve the soil, a means for feeding the soil into the sediment hopper 20 is used. Is required. A hydraulic shovel PS, for example, is preferably used as the means for charging the earth and sand.

In order to improve the soil quality in the yard,
The sediment accumulated with a predetermined spread is scooped up sequentially from the end by a bucket B of the hydraulic excavator PS, and is thrown into the sediment hopper 20 of the soil improvement machine. While the earth and sand is conveyed from the earth and sand hopper 20 by the carry-in conveyor 10, the earth improving material is supplied from the earth improving material hopper 30 and is supplied onto the surface of the earth and sand. Then, the mixture of the earth and sand and the soil conditioner is fed into the treatment tank 60 from the end portion of the carry-in conveyor 10 through the inlet 62, and the paddle mixer 64 provided in the treatment tank 60 acts to separate the earth and the soil and the soil conditioner. The mixture moves to the position of the discharge port 63 while being stirred and mixed. Then, the soil and the soil conditioner are uniformly mixed in the treatment tank 60 to produce the improved soil in the aggregated state. This improved soil is discharged from the discharge port 63 to the discharge conveyor 8
After 0, it is deposited at a predetermined position.

When the earth and sand is taken into the soil improvement machine from the accumulation portion, a space is generated at that portion. If the improved soil produced in sequence is deposited in this space, most of the space in the yard can substantially serve as the sediment deposition site and the improved soil deposition site, and the yard space can be effectively used. Can be utilized. It is for this reason that the soil improvement machine can be self-propelled by the undercarriage 1, and as the work progresses and the sediment deposition site recedes, the undercarriage 1 is operated to move the soil improvement machine. I will let you.

As described above, when the produced improved soil is deposited on the discharge conveyor 71 at a predetermined position, the improved soil may be deposited directly on the portion where the sediment has been removed from the accumulation portion. However, since the improved soil has an aggregated shape, it may be desirable to classify it according to the particle size, and therefore the sorting device 81 is provided. The sorting device 81 is configured as a portable type and includes a sieve 82 and a transfer conveyor 83. It is desirable that the sieve 82 has a mesh size that allows passage of particles having a predetermined particle size or less, such as 13 mm or less, 20 mm or less, and 25 mm or less, and is constituted by a vibrating screen. Then, it passes through the sieve 82, and the improved soil having a uniform particle size is deposited on a predetermined deposition location by the transfer conveyor 83. Also,
Since the improved soil having a large particle size that has not passed through the sieve 82 has the same quality in that it has been solidified,
The improved soil having a large particle size is also used as a material for backfilling or the like as it is or after being subjected to a treatment for making the particle size uniform.

The soil improvement machine is shared by a plurality of yards, so that a relatively small amount of earth and sand is subjected to soil improvement treatment in one yard, and then the soil improvement machine is transported to another yard to obtain the same soil quality in this yard. Perform improvement processing. For this purpose, as shown in FIG. 26, the trailer TT is placed on the carrier TR and transported. When the trailer TT is transported, its length and width dimensions are also limited to some extent, but the most important dimension is the height dimension. Unless this height dimension is suppressed as low as possible, it will not be possible to pass under a guard or underpass, and the transportation route will be significantly restricted. It is possible to disassemble a part of the machine when transporting it by the trailer TT, but then, since it has to be disassembled and assembled each time it is carried in and out of the yard, the work is extremely troublesome.

As is apparent from FIG. 2, the soil improvement material hopper 30 is located at the highest position in the soil improvement machine. Since this soil improvement machine is a self-propelled machine, the main body frame 2 is provided on the lower traveling body 1, and the treatment tank 60 is installed on the main body frame 2.
Further, the carry-in conveyor 10 is provided above the inlet 62 for receiving the earth and sand and the soil-improving material in the processing tank 60, and the soil-improving material is supplied from the upper part of the carry-in conveyor 10. Therefore, the soil improvement material hopper 30 is mounted on the base plate 32 located at the highest position.

The volume of the storage tank 33 in the soil improvement material hopper 30 determines the continuous operation time of the soil improvement machine. Soil improvement is designed to be continuously processed, and if soil and soil improvement material are supplied to the treatment tank 60,
The soil is continuously stirred and mixed, and the improved soil is continuously discharged. Therefore, continuous processing becomes possible unless the supplied material is stopped. Here, as the materials to be supplied, there are earth and sand and a soil improving material. The earth and sand are sequentially supplied during the treatment, whereas the soil improving material is stored in the soil improving material hopper 30 having a predetermined volume. Since it is fed from the tank 33, it becomes a batch type, and when the soil improvement material inside is completely consumed, it must be replenished newly.

From the above, the continuous operation time of the soil improvement treatment substantially depends on the volume of the storage tank 33. To enable continuous operation for a long time, it is necessary to use a large storage tank. For this purpose, the diameter of the storage tank 33 is increased or the height dimension is increased. The diameter of the storage tank 33 depends on the width dimension of the vehicle and cannot exceed at least the vehicle width. A crane 54 is provided on one side of the main body frame 2, and a space used as a passage or the like for an operator to perform work such as machine maintenance is required on the other side. Therefore, the widthwise dimension of the storage tank 33 cannot be increased unreasonably.

In the height direction, since there is no substantial restriction on the mechanism described above, the storage capacity can be increased by the height dimension of the storage tank 33. However, as shown in Fig. 26, this soil improvement machine is a trailer TT.
Since it is placed on the cargo truck TR and is transported from yard to yard, the height is restricted when traveling on a general road or the like. However, there are no restrictions on the height within the yard.

This is the reason why the storage tank 33 of the soil improvement material hopper 30 is provided with the bellows portion 37 as a height adjusting portion. When the soil is improved in the yard, the bellows portion 37 is extended. The operating volume is not increased and the internal volume is increased. In addition, the height of the container is shortened by storing it during transportation. As a result, the height dimension of the soil improvement machine is controlled to be equal to or lower than the height restricted during transportation.

In order to adjust the height of the storage tank 33, the stopper pin 47 screwed between the support rod 45 and the guide cylinder 46 can be removed so that the support rod 45 can be moved up and down with respect to the guide cylinder 46. To Then, depending on whether the top plate portion 36 is pulled down or pulled up, the top plate portion 36 is displaced to the height position in the stored state or the operating state. As shown in FIG. 27, this work is performed by connecting the hanging wire 84 to the hook locking tool 42 provided on the top plate 36 and connecting the hanging wire 84 to the hook 55 of the crane 54.
This can be easily performed by hooking the wire and raising and lowering the wire 56. When the top plate portion 36 reaches a predetermined height position, the stopper pin 47 is inserted between the support rod 45 and the guide cylinder 46 to fix the top plate portion 36 at that position. The operation of raising and lowering the top plate portion 36 is not particularly different from the operation of supplying the soil quality improving material from the flexible container to the soil quality improving material hopper 30 as shown by the phantom line in FIG.

As described above, by making the height of the storage tank 33 adjustable, the soil quality improving material hopper 30 can be adjusted.
The bellows portion 37 that constitutes the storage tank 33 of
If a large amount of soil improvement material is stored in the storage tank 33 after the volume is increased, the soil improvement machine can be continuously operated for a long time. Further, by lowering the bellows portion 37 to lower the overall height of the storage tank 33, the soil improvement machine as a whole can be miniaturized and made compact, and in particular the dimension in the height direction can be shortened, and the trailer TT can be used from yard to yard. You will be able to transport it smoothly without disassembling the machine. And the trailer TR of the trailer TT of the soil improvement machine
Getting on and off can be performed smoothly and quickly by operating the lower traveling body 1 and allowing the soil improvement machine to self-propel.

Here, as the height adjusting means of the storage tank in the soil quality improving material hopper, the soil quality improving material hopper 90 shown in FIGS. 28 and 29 can be used in addition to the above-mentioned bellows type. This soil improvement material hopper 9
Reference numeral 0 has a telescopic storage tank 91. The storage tank 91 has a lower tank 92 having an open upper end and an upper tank 93 having an open lower end and fitted into the lower tank 92.
And a flexible sheet 94 is provided between the lower tank 92 and the upper tank 93. A shape-retaining cylinder 95 is mounted on the outer circumference of the upper tank 93. The shape-retaining cylinder 95 is provided with a stopper ring 96 provided near the lower end of the upper tank 93.
It can move up and down within the range regulated by.

3 from the upper end of the upper tank 93.
The supporting rods 97 of the book are hung, and these supporting rods 97 are provided.
Is slidably inserted in the guide cylinder 46 provided on the base plate 32, as in the above-described embodiment. Therefore, FIG.
As shown in FIG. 8, when the upper tank 93 is pulled up, the flexible sheet 94 extends and the volume of the storage tank 91 increases by the length of the flexible sheet 94. Moreover, at this time, the shape-retaining cylinder 95 descends to a position where it abuts on the stopper ring 96 to surround the portion of the flexible sheet 94. When the soil-improving material is supplied to the inside, the flexible sheet 94 tries to bulge outward. However, since the shape-preserving cylinder 95 is arranged on the outer peripheral portion of the flexible sheet 94, the flexible sheet 94 has a flexible shape. there is no possibility that the door 36 is bulging.

On the other hand, as shown in FIG. 29, when the upper tank 93 is pulled down, the flexible sheet 94 is bent, and after the shape-retaining cylinder 95 comes into contact with the support member 18, The shape-retaining cylinder 95 stops at that position, and the upper tank 93 is pulled down to a predetermined position.
As a result, the height of the soil improvement material hopper 90 as a whole is shortened, and the height of the soil improvement machine as a whole is reduced. As a result, it is convenient for transportation by a trailer or the like.

[0056]

As described above, according to the present invention, the height dimension of the soil improving material hopper in the soil improving machine can be adjusted. Therefore, when performing the soil improving treatment, a large amount of soil improving material is used. Can be stored continuously for a long time, and when the soil improvement machine is transported, the overall height dimension can be shortened, which is convenient for transportation by a trailer, For example, it is possible to carry into a yard where a relatively small amount of earth and sand requiring soil improvement is accumulated and to perform necessary processing, and it is possible to significantly improve the operating efficiency of the machine.

[Brief description of drawings]

FIG. 1 is a plan view of a self-propelled soil improvement machine showing an embodiment of the present invention.

FIG. 2 is a front view of FIG.

FIG. 3 is an exploded view showing the structure of each mechanism for performing soil improvement processing in FIG.

FIG. 4 is a cross-sectional view of the earth and sand hopper according to the embodiment of the present invention.

5 is a cross-sectional view taken along the line AA of FIG.

FIG. 6 is a plan view of the sieving unit according to the embodiment of the present invention.

FIG. 7 is a front view of FIG.

FIG. 8 is a front view of the soil improvement material hopper according to the embodiment of the present invention.

9 is a plan view of FIG. 8. FIG.

10 is a front view similar to FIG. 8 showing the storage tank of the soil improvement material hopper in a stored state.

FIG. 11 is a cross-sectional view of a base portion forming a storage tank in the soil improvement material hopper of FIG.

FIG. 12 is a plan view similar to FIG. 9 in which the opening / closing lid is removed.

FIG. 13 is a cross-sectional view taken along the line BB of FIG. 9, showing the base portion omitted.

FIG. 14 is a first bellows portion according to the embodiment of the present invention.
It is explanatory drawing which shows the structural example of.

FIG. 15 is a second bellows portion according to the embodiment of the present invention.
It is explanatory drawing which shows the structural example of.

FIG. 16 is a third bellows portion according to the embodiment of the present invention.
It is explanatory drawing which shows the structural example of.

FIG. 17 is a plan view of the feeder according to the embodiment of the present invention.

18 is a cross-sectional view taken along the line CC of FIG.

19 is a cross-sectional view taken along line DD of FIG.

FIG. 20 is a front view showing the configuration of a crane installed in the self-propelled soil improvement machine in the embodiment of the present invention.

FIG. 21 is a plan view of the processing tank according to the embodiment of the present invention.

22 is a front view of FIG. 21. FIG.

23 is a cross-sectional view taken along the line EE of FIG.

24 is a cross-sectional view taken along line FF of FIG.

FIG. 25 is an operation explanatory view showing a state in which soil improvement is performed in the yard by the self-propelled soil improvement machine according to the embodiment of the present invention.

FIG. 26 is an external view showing a state where the self-propelled soil improvement machine according to the embodiment of the present invention is transported by a trailer.

27 is an operation explanatory view showing an operation of displacing the soil improvement material hopper between the operating state shown in FIG. 8 and the stored state shown in FIG.

FIG. 28 is a front view showing a main part of a soil improvement material hopper according to another embodiment of the present invention in a cutaway manner, showing the soil improvement material hopper in an operating state.

FIG. 29 is a fragmentary front view showing the soil improvement material hopper of FIG. 28 in a retracted state.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Lower traveling body 2 Main body frame 3 Supply section 4 Processing mechanism section 5 Discharging section 10 Carry-in conveyor 20 Sediment hopper 12 Sieving means 30,90 Soil quality improvement material hopper 31 Strut 32 Bed plate 33,91 Storage tank 34 Feeder 35 Base section 36 Top plate portion 37, 137, 237, 337 Bellows portion 37a, 137a, 237a, 337a Flexible sheet 37b, 137b, 237b, 337b Support bone 38 Stirring member 39 Communication hole 41 Open / close door 42 Hook 43 Cutter 43a Support arm 45, 97 supporting rod 46 the guide tube 47 stopper pin 54 crane 55 hook 60 tank 64 paddle 84 hanging down wire 92 lower portion tank 93 the upper part the tank 94 the flexible sheet 95 the shape retaining accommodating cylinder

─────────────────────────────────────────────────── ─── Continuation of the front page (72) Kazumichi Hosoya, 650 Jinrachi-cho, Tsuchiura-shi, Ibaraki Prefecture Tsuchiura Plant, Hitachi Construction Machinery Co., Ltd. (72) Yasuharu Yamamoto 1-1, Yashita, Nemugi-cho, Okazaki-shi, Aichi Hiritsu Construction Machinery Co., Ltd. Chubu Branch (72) Inventor Tetsushiro Miura 2-6-2 Otemachi, Chiyoda-ku, Tokyo Inside Hitachi Construction Machinery Co., Ltd. (56) Reference JP-A-9-66992 (JP, A) ) JP-A-10-139093 (JP, A) JP-A-10-72094 (JP, A) (58) Fields investigated (Int.Cl. ⁷ , DB name) E02F 7/00 E02D 3/12 B65D 88 / 64 B65D 88/28

Claims (4)

(57) [Claims] 1. A traveling means, a main body frame provided on the traveling means, a soil improvement processing means provided on the main body frame for mixing soil and soil with a soil improving material, and one of the main body frames in a longitudinal direction. It is arranged on the main body frame via the earth and sand hopper provided on the side, the top plate portion, and the support column.
This is the base part that is provided on the base plate and has an open top.
It is interposed between the base part and the top plate part, and is composed of an elastic member.
A storage tank for soil improvement material that has a peripheral body part that is formed, and is installed at a plurality of locations on the outer periphery of the top plate portion of the storage tank
The mounting plate and the mounting plate at a position facing the mounting plates on the base plate.
A plurality of guide cylinders respectively provided, one end of which is slidably inserted into the guide cylinder, and the other end
A plurality of support rods connected to the mounting plate, and a state in which the elastic member is extended or reduced.
So that the support rod is fixed to the guide tube.
A stopper pin for setting, a feeder for supplying a soil improvement material from the storage tank, a soil supply material supplied from the sediment hopper and a soil improvement material supplied from the feeder, so as to be transferred to the soil improvement processing means, A self-propelled soil improvement machine comprising: a carry-in conveyor provided below the earth and sand hopper. 2. The self-propelled soil improvement machine according to claim 1, wherein the elastic member forming the peripheral body of the storage tank has a bellows structure. 3. The self-propelled soil improvement machine according to claim 2, wherein the bellows structure surrounds at least one of the inner and outer peripheries of a flexible tubular sheet, and has a predetermined vertical direction. A self-propelled soil improvement machine characterized by being composed of a plurality of skeletons fixed at pitch intervals. 4. A traveling means, a main body frame provided on the traveling means, a soil improvement processing means provided on the main body frame for mixing the soil and the soil improving material, and one of the longitudinal directions of the main body frame. Side earth and sand hopper, an upper tank whose lower end is open, and the main body flap through a column.
It is installed on the base plate placed on the ram and has an open top.
Lower tank that fits with the upper tank, and this base
A flexible sheet that is interposed between the top part and the top plate part,
It has a shape-retaining cylinder attached to the lower outer circumference of the upper tank.
Storage tank for soil improvement material, and multiple locations around the upper tank in this storage tank
And the mounting plate provided on the base plate at a position facing the plurality of mounting plates.
A plurality of guide cylinders respectively provided, one end of which is slidably inserted into the guide cylinder, and the other end
A plurality of support rods connected to the mounting plate, and the flexible sheet in a stretched state and a contracted state.
Set the support rod to the guide tube so that they are displaced.
Stopper pin for fixing , a feeder for supplying the soil improvement material from this storage tank, and the earth and sand supplied from the earth and sand hopper and the soil improvement material supplied from the feeder so as to be transferred to the soil improvement processing means, A self-propelled soil improvement machine comprising: a carry-in conveyor provided below the earth and sand hopper.