JP3375573B2 - Soil improvement material supply device and self-propelled soil improvement machine - Google Patents

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a lime added to earth and sand in a machine used for improving soft ground and strengthening the earth, and improving the quality of earth and sand to meet a predetermined purpose. The present invention relates to a soil quality improving material supply device for supplying soil quality improving material such as the above, and a self-propelled soil quality improving machine including the same.

[0002]

2. Description of the Related Art For example, when burying gas pipes, water and sewage works, other road works, foundation works, etc., it is desirable to backfill the soil generated by excavation as it is, but 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 a very small grain size and high viscosity, or soil that is hard to solidify due to excessive weathering, ground subsidence etc. It 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. The mixing of the soil and the soil improving agent is carried out in a stirring container provided with a stirring means having a predetermined structure. Done in. Here, the soil improvement treatment methods can be roughly classified into a batch treatment method and a continuous treatment method. In the batch type treatment, a predetermined amount of earth and sand and a soil conditioner are supplied into a stirring container equipped with a stirring means, and the container is sufficiently stirred to produce a fixed amount of improved soil. On the other hand, the continuous treatment method continuously supplies the soil and the soil improving agent to the mixer, and continuously performs the treatment of mixing the soil and the soil improving agent in the mixer, and thus, The improved soil obtained is continuously discharged from the mixer. Here, as the mixing method of the soil and the soil improvement material by the continuous treatment method, a mixing method,
The crushing method etc. are put to practical use. The mixing method is individualized so as to transfer to the discharge side while mixing the sand and soil and the soil conditioner by the stirring means in the mixer, and the crushing method uses a crusher equipped with a rotary impactor to While the improving material and the improving material are dropped from a high place in the crushing machine, a hammer is applied to crush the soil to mix the soil and the soil improving material.

Whether the mixing method is adopted or the crushing method is used, when soil improvement is carried out in a continuous process, the soil and the soil improving material are continuously supplied to a mixer or a crusher. There must be. For example, when soil improvement is performed by a plant method, earth and sand are used which are piled up in a predetermined sedimentation site. In addition, when soil improvement is performed directly at the excavation site, the soil generated by excavation is supplied as it is. Therefore, since the earth and sand can be supplied to the mixer or the like directly using a machine such as a hydraulic excavator or via the belt conveying means or the like, the earth and sand supply work can be continuously performed.

On the other hand, the soil conditioner is usually packed in a flexible container or the like and supplied from the flexible container to a mixer or the like. However, the soil conditioner is added to earth and sand. Yes, the amount of addition depends on the amount of sediment supply. Therefore, in order to produce good quality improved soil, it is necessary to control the amount of soil improvement material supplied. In addition, the soil improvement material is scattered around, so as not to pollute the surrounding environment, and not to absorb moisture etc. before mixing with earth and sand, etc.
Also from the viewpoint of handling, it is general to use a storage tank and a feeder that are in a substantially sealed state to store the soil improvement agent, and supply the storage tank to the mixer or the like from the storage tank through the feeder. By providing the feeder with a supply amount control function, the soil improvement material can be supplied from the feeder so as to have a required mixing ratio in accordance with the supply amount of earth and sand. Therefore, the supply amount of the soil conditioner is limited, and the soil conditioner must be replenished when the storage tank becomes empty. In this replenishment work, the lid provided at the top of the storage tank is opened, and the soil improvement material is supplied from the flexible container into the storage tank, but the flexible container filled with the soil improvement material is extremely large in size and weight. Therefore, it is usually suspended by a crane and supplied to the storage tank. Therefore, replenishment work of the soil improvement material into the storage tank requires a considerable amount of time and labor, and during this period, the soil improvement treatment is usually stopped.

[0006]

From the above, the operating efficiency of the soil improvement machine greatly depends on the volume of the storage tank for supplying the soil improvement material. That is, if the capacity of the storage tank is small, the soil improvement material must be replenished frequently, and the processing interruption time becomes long. Therefore, in consideration of the treatment efficiency and the like, it is desirable to make the volume of the storage tank as large as possible so that a large amount of the soil improvement material can be stored. Here, in order to reliably and smoothly feed the soil improvement material from the large-capacity storage tank to the feeder, it is necessary to stir the inside of the storage tank.

By the way, when a large amount of soil improving agent is stored in a storage tank and the soil improving agent is added to the earth and sand while stirring in the storage tank, the material of the soil improving agent is In some cases, as will be described with reference to FIG. 27, solidification occurs in the storage tank, resulting in inconvenience such as incapability of supply. In particular, when lime or the like is used as a solidification material for solidifying earth and sand as a soil improvement material for strengthening the ground, this inconvenience becomes more remarkable.

In FIG. 27, T is a storage tank for storing the soil improvement material, and F is a feeder for supplying the soil improvement material from the storage tank T in a fixed amount. The feeder F is provided below the soil improvement material supply opening P formed on the bottom plate of the storage tank T. Also, the storage tank T
A rotary shaft A is installed in the inside so as to penetrate through the center of the bottom plate, and a stirring blade S extending in the radial direction is connected to the rotary shaft A in the vicinity of the bottom plate in the storage tank T. Is provided. The rotation shaft A extends outside the storage tank T and is connected to a rotation driving means R such as a motor.

Now, it is assumed that the soil improvement material is stored in the storage tank T almost completely. At this time, the gravity of the soil improvement material acts in the storage tank T in the direction of the arrow x. Then, this gravity becomes maximum at the position of the bottom plate in the storage tank T. On the other hand, in the storage tank T, the stirring blade S
Since the rotor is rotating, the action of the stirring blade S causes
A force for pushing the soil improvement material from the central portion side of the storage tank T toward the inner surface of the peripheral body portion, that is, a force in the arrow y direction in the drawing acts. Moreover, the position where the stirring blade S is provided is the lower position of the storage tank T, that is, the position where the gravity is maximum and the position in the vicinity thereof. Further, the force of the stirring blade S in the direction of the arrow y is indicated by the arrow z in the figure on the inner surface of the peripheral body portion of the storage tank T.
As a result of changing the direction to the direction indicated by, the force in the direction of pushing up the soil improvement material along the inner surface of the peripheral body portion of the storage tank T acts. Since the action of gravity from above and the action of stirring from below are in opposite directions, the soil improvement material is compressed from above and below with extremely strong force. Due to the action of this compressive force, the soil improvement material itself may be solidified near the lower end of the inner surface of the peripheral body of the storage tank T. In particular, when lime is used as the soil improvement material, the degree of solidification due to compression becomes extremely large. And the storage tank T
In the vicinity of the bottom plate, if the soil improvement material solidifies on the inner peripheral surface side, the solidification material cannot be used as the soil improvement material, and the soil improvement material is not only wasted, but also the storage tank T Will not be able to use the volume of
Further, the stirring resistance of the stirring blade S is significantly increased, which causes a problem that smooth stirring cannot be performed. Further, although the solidified soil conditioner must be removed as appropriate, since the inner surface of the storage tank T sticks to the inner surface of the storage tank T, the work of removing the solidified soil conditioner becomes extremely troublesome. Moreover, such an inconvenience problem becomes more remarkable as the volume of the storage tank is increased.

Here, it is conceivable to change the shape of the bottom of the storage tank in order to suppress the compression and solidification of the soil improvement material in the storage tank. For example, if the bottom of the storage tank has an inverted conical shape, the soil conditioner can be smoothly fed to the feeder by substantially not stirring or by applying a slight stirring force. However, in that case, the volume with respect to the height dimension of the storage tank is reduced by the amount of the inverted conical shape, and a sufficient amount of the soil improvement agent cannot be stored unless the height of the storage tank is increased.
When the height of the storage tank is increased in this way, not only is the work of supplying the soil improvement agent to the storage tank troublesome, but when the soil improvement machine is of a self-propelled type, the height of the entire machine becomes large. Therefore, it is inconvenient for transportation of machines.

The present invention has been made in view of the above points, and an object of the present invention is to provide a large amount of soil improvement material as a soil improvement material supply device in order to reduce the frequency of replenishment of the soil improvement material. Even if a large storage tank that can store is used, it is to prevent the soil improvement material from being compressed and solidified inside.

[0012]

In order to achieve the above object, according to the Invention The present invention provides a soil improvement agent supply apparatus for use in soil improvement machine a mixture of the soil and soil improvement agent to improve the soil, soil Storage tank for improved materials and this storage tank
The interior is divided into an upper storage area and a lower storage area.
Is installed in the storage tank, and the upper storage
Inclined with a communication passage that connects the retention area and the lower storage area
A partition wall and soil modification provided on the outer peripheral side of the bottom plate of the storage tank.
Good material supply opening, slanted partition wall and bottom of the storage tank
It is provided between the plate and the center of the bottom plate of the storage tank.
An in- tank stirring means having a plurality of radially extending stirring blades, and a feeder connected to the soil improvement material supply opening of the storage tank and supplying the soil improvement material to the earth and sand are provided.

Here, when at least the lower side of the storage tank has a bottomed cylindrical shape, the slanted partition wall may be configured to have a slanted surface having a substantially inverted truncated cone shape. Further, the agitating means in the tank is connected to a rotary shaft arranged so as to penetrate through a central portion of the bottom plate of the storage tank, and is connected to a position inside the storage tank of the rotary shaft, and a plurality of radially extending parts are provided near the bottom plate. The stirring blade may be provided. Further, these stirring blades are used as main stirring blades, and the tip portions of the respective main stirring blades are connected by a circular holding member, and the holding members are provided with a plurality of auxiliary stirring blades radially inward at predetermined pitch intervals. When configured to attach,
It is possible to suppress the soil conditioner from being pressed against the inner peripheral surface of the peripheral body portion of the storage tank by the tank agitating means. And in this case, the formation position of the soil improvement material supply opening is
The auxiliary stirring blades are arranged within the range of the rotation trajectory, particularly on the side closer to the inner peripheral surface. Further, when the auxiliary stirring blade is inclined so that the side close to the center of rotation of the end face facing the rotation direction faces the rear in the rotation direction, the pressing force of the soil improvement material on the inner peripheral surface of the storage tank by the auxiliary stirring blade is increased. It is more effective in suppressing.

When the soil improvement treatment is performed, the amount of the soil improvement agent added varies depending on the purpose of use of the produced improved soil. When the amount of soil improvement agent added to the earth and sand is small, etc., a cylindrical communication part throttle member extending toward the bottom plate of the storage tank is formed in the formation part of the communication opening of the inclined partition wall provided in the storage tank. By connecting and providing
It is possible to limit the feed amount of the soil improvement material from the upper storage area to the lower storage area. Further, if this communication portion throttle member is configured to be vertically position-adjustable to the inclined partition wall, when the supply amount of the soil improvement material changes according to the purpose of soil improvement,
By adjusting the position of the communication part throttle member, the passage area from the upper storage region to the lower storage region can be adjusted. For example, when strengthening the ground, it is necessary to add a large amount of soil improvement agent, so the passage throttle member is raised to increase the passage area from the upper storage region to the lower storage region, and also to bury the pipe. When the excavated soil is backfilled around the pipe laying part when it is used as so-called backfilled soil, the amount of soil improvement agent added is small, so the passage throttle member is lowered to reduce the passage cross-sectional area. Control such as reduction can be performed.

The machine for performing soil improvement treatment may be of a stationary type, but the mixing means and the transportation conveyor as the transportation means of the earth and sand are not mounted on a self-propelled vehicle, and a feeder together with a storage tank is installed on the transportation conveyor. As a configuration to be installed, the soil may be improved by transporting it to an appropriate place. When the storage tank is configured as a self-propelled soil improvement machine, in order to make the volume of the storage tank as large as possible and reduce the height dimension thereof during transportation, the storage tank may be vertically moved by, for example, a bellows. The upper tank portion that can be expanded and contracted and the lower tank portion that has a cylindrical shape with a bottom on the bottom side may be connected to each other.
In this case, the inclined partition wall is fixed to the upper part of the lower tank part. As a method of mixing the earth and sand and the soil conditioner, it is preferable to use a mixing method in order to make the degree of mixing uniform, but it goes without saying that it can also be applied to a crushing method using a rotary impactor. Yes.

[0016]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. Here, in this embodiment, it is configured as a self-propelled soil improving machine in which the soil improving machine is installed in the traveling vehicle, and the mixing method using the stirring means is used as the mixing method of the soil and the soil improving material. However, the present invention is not limited to these configurations.

FIGS. 1 and 2 show the overall construction of the self-propelled soil improvement machine, and FIG. 3 shows the mechanical part in a disassembled state. First, in FIG. 1, reference numeral 1 denotes a lower traveling body, and the lower traveling body 1 is configured to include a crawler type means having a crawler belt 1a. In addition, as a traveling means,
It can also be configured as a wheel type or the like. A main body frame 2 forming a chassis is connected to the lower traveling body 1, and the main body frame 2 is provided 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,
Further, a machine room 6 in which machines such as an engine, a hydraulic pump, and a directional control valve unit are built is provided at an upper position of the processing mechanism section 4.

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 supply device 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 improvement material supplied from the soil improvement material supply device 30 is adjusted according to the measured amount.

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, which is wound around a drive wheel 13 and a driven wheel 14 supported by a frame 12, and a well-known tension adjusting mechanism is provided on the driven wheel 14 side. Is equipped with. 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, restriction plates 16 and 16 are provided on both left and right sides of the transport surface of the transport belt 11 at positions upstream of the mounting portion of the earth and sand hopper 20. The transport conveyor 10 is provided in an inclined state in which its upstream side is low and it rises obliquely upward toward the downstream 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 downstream 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 outlet 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 soil that has passed through the outflow port 21 by a biasing means such as a spring. Therefore, from the sediment hopper 20, a constant amount of sediment determined by the transport speed of the transport belt 11 on the carry-in conveyor 10, the opening area of the outlet 21, and the pressing force of the pressure roller 22 is supplied to the processing mechanism unit 4. . Further, the earth and sand is not directly supplied to the earth and sand hopper 20, but solid foreign matters such as rocks, concrete, and metal lumps are eliminated by the sieving unit 23, and the bulk density of the earth and sand is reduced to sufficiently fill the inside of the earth and sand. It is made to contain various air and then dropped on the conveyor belt 11.

The sieving unit 23 may be constructed as a fixed sieve, but in the ones shown in FIGS. 6 and 7, it is constructed as a vibrating sieve which vibrates the sieving unit 23 in the vertical direction. As a concrete configuration of this, spring receiving members 26 are provided at four corners of the frame 24 of the sieving unit 23.
Is fixedly provided, and the support member 18 and the spring receiving member 26 are provided.
A spring 27 is interposed between and so that the frame body 24 is elastically supported by the support member 18. The lattice member 25 is provided with a vibrating means 28 for vertically moving the lattice member 25 mounted on the support frame 24. The vibrating means 28 has a vibrating member 28b that is rotationally driven by the driving means 28a, and the vibrating member 28b is a rotating drum, and the lattice member 2 is provided inside.
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.

On the carry-in conveyor 10, a soil-improving-material supply device 30 is installed on the downstream side in the earth and sand conveying direction. As shown in FIGS. 8 to 13, the soil-improving-material feeder 30 has four (or three) standing pieces on the main body frame 2.
It is supported by a frame-shaped base plate 32 provided on a post 31 of a book. Therefore, the carry-in conveyor 10 is extended 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. become. Here, the soil quality improving material is mixed with the soil to improve or improve the soil quality, and a material depending on the purpose of soil quality improvement and reforming is used. When improving the ground to strengthen the ground and burying pipes, etc., when using it as backfill soil for backfilling the periphery of the pipe laying part with excavated soil, solidifying materials such as lime and cement, Particularly, lime is preferably used, and various additives and the like for accelerating the solidification are mixed with the lime as needed.

The soil improvement material supply device 30 includes a storage tank 33 for storing a predetermined amount of the soil improvement material, and the storage tank 3
3 and a feeder 34 which is continuously provided at the lower part of the unit 3 and supplies a soil improvement material by a predetermined amount. Here, storage tank 3
3 has a substantially cylindrical shape as a whole, and has a space for storing the soil improvement material inside. Here, in the illustrated one, the height dimension thereof is variable. For this reason, the storage tank 33 has a base plate 32 on the lower side.
A lower tank portion 35 having a bottomed cylindrical shape, a top plate portion 36, and a bellows as an upper tank portion provided between the lower tank portion 35 and the top plate portion 36 and having a variable upper volume. Part 3
7 and 7.

The lower tank portion 35 and the top plate portion 36 are formed of a hard member such as a steel plate, and the bellows portion 37 is capable of expanding and contracting in the vertical direction. When the bellows portion 37 is extended, it is shown in FIG. It becomes the operation state shown, and it becomes possible to store a large amount of soil improvement material 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 portion 37 functions as height adjusting means of the soil improvement material supplying device 30.

The top plate portion 36 is composed of a plate body whose outer peripheral side is bent downward, and a substantially circular opening 36a is formed in the central portion thereof, and an opening / closing lid 38 which can be opened at both sides is formed above the opening 36a. Are formed. Further, at least three hook engaging members 39 are provided at positions outside the opening / closing lid 38. Then, as shown in FIG. 11, the cutter 4 is provided below the portion of the top plate 36 where the opening / closing lid 38 is provided.
0 is mounted, and the cutter 40 is attached to a support arm 40a connected to the lower surface of the opening / closing lid 38. The soil quality improving material is filled in a flexible container, and the soil quality improving material is directly supplied to the storage tank 33 from the flexible container.
0 is for cutting the lower end of this flexible container. Then, the soil improvement material is surely stored in the storage tank 3 from the flexible container torn by the cutter 40.
The support arm 40a, to which the cutter 40 is attached, is provided at a position that is inserted into the top plate portion 36 by a predetermined depth so that the support arm 40a does not flow into the interior 3 and overflow or scatter around.

Here, the storage tank 33 is divided into upper and lower parts,
The reason why the bellows portion 37 is provided on the upper side is that the storage amount of the soil improvement material in the storage tank 33 is not large and the height of the whole machine is reduced when the whole machine is transported by a trailer or the like. Therefore, it is necessary to selectively fix the bellows portion 37 in the extended operation state of FIG. 8 and the contracted storage state of FIG. For this reason, the top plate 36 has an approximate 120 °
Mounting plates 36b are provided so as to extend laterally over three places at intervals, and a supporting rod 41 is vertically provided on each of the mounting plates 36b. Guide tubes 42 are erected on the base plate 32 at positions corresponding to the vertical positions of the support rods 41. The support rods 41 are slidably inserted into the guide tubes 42. There is. As a result, the guide cylinder 42 and the support rod 41 are in a telescopically fitted state, and the support rod 41 can penetrate the guide cylinder 42 and project downward. In order to fix the bellows portion 37 in the extended operating state and the contracted retracted state, the support rod 41 is provided with pin insertion holes 41a and 41b at two upper and lower positions, and the guide tube 42 is provided with predetermined pins. There is only one pin insertion hole (not shown) at the position. The support rod 41 is inserted into the pin insertion hole of the guide cylinder 42.
When the stopper pin 43 is inserted with the lower pin insertion holes 41a aligned with each other, the bellows portion 37 is held in the extended operating state. On the other hand, when the pin insertion hole 41b above the support rod 41 is aligned with the pin insertion hole of the guide cylinder 42 and the stopper pin 43 is inserted, the bellows portion 37 is held in the retracted state.

Lower tank portion 35 in storage tank 33
As shown in FIGS. 12 and 13A, the bottom plate 35
a and a peripheral body portion 35b, the lower tank portion 3
5 is provided with an in-hopper stirring means 44. A plurality of the stirring means 44 in the hopper are provided on a rotary shaft 45 extending through the central portion of the bottom plate 35a of the lower tank portion 35 (4 in the drawing).
Main stirring blade 46 is attached, and the main stirring blade 46 is arranged in the lower tank 35 at a position close to the bottom plate 35a. On the other hand, at a position outside the lower tank portion 35 of the rotating shaft 45, it is connected to a rotation driving means 47 fixedly provided on the back surface side of the bottom plate 35a. Here, the rotation driving means 47 is composed of a hydraulic motor, an electric motor, or the like.

As shown in FIG. 13, the tip of the main stirring blade 46 is radially extended to the vicinity of the inner surface of the peripheral body portion 35b of the lower tank 35.
A ring-shaped holding member 48 is fixedly provided between the tips of the main stirring blades 46. Then, in this holding member 48, one or a plurality of auxiliary stirring blades 49 are attached between the connecting portions to the main stirring blades 46 located at the front and rear. Each of these auxiliary stirring blades 49 projects from the inner surface of the holding member 48 along the bottom plate 35a of the upper tank portion 35 toward the rotary shaft 45 by a predetermined length.

Agitating means 44 in the hopper having the above construction
Is provided on the bottom plate 35a of the lower tank portion 35 in order to supply the soil quality improving material from the storage tank 33 to the feeder 34, and the soil quality improving material is smoothly and reliably supplied from the soil quality improving material supply opening 50 having a predetermined opening diameter. For supplying to the feeder 34. Here, the soil improvement material supply opening 50
Is provided at the outer peripheral side of the bottom plate 35a, that is, at a position close to the side continuously provided with the peripheral body portion 35b.
The rotation locus 9 includes the upper portion of the position where the soil improvement material supply opening 50 is opened. The rotation direction of the stirring means 44 in the hopper is the direction shown by the arrow in FIG. 13 (a), and the main stirring blade 46 has a side surface on the front side in the rotation direction as shown in FIG. 13 (b). It is an inclined surface 46a that rises upward. Further, the side surface 49a of the auxiliary stirring blade 49 on the front side in the rotation direction is, on its plane, rearward in the rotation direction from the side connected to the holding member 48, that is, from the outer peripheral side of the lower tank portion 35 toward the rotation center side. It is inclined to face.

Further, between the lower tank portion 35 and the bellows portion 37 constituting the upper tank portion, an inclined partition wall 51 having a substantially inverted truncated cone shape is provided. The inclined partition wall 51 is made of a steel plate or the like, and its outer peripheral side end portion is fixed to the upper surface of the lower tank portion 35 by means such as screwing or welding. Further, it has a guide surface which is inclined obliquely downward from the connecting portion to the lower tank portion 35 toward the center, and an opening having a predetermined size is formed in the central portion. Therefore, the inside of the storage tank 33 is divided into the upper storage area on the side of the bellows portion 37 and the lower storage area on the side of the lower tank portion 35 by the inclined partition wall 51. Moreover, the upper storage region and the lower storage region communicate with each other through the opening formed in the central portion of the slanted partition wall 51, so that the opening portion of the slanted partition wall 51 serves as a communication passage 51a therebetween.
Here, the inclined partition wall 51 extends at least to a position that almost completely covers the soil improvement material supply opening 50 formed in the bottom plate 35a, and preferably to a position closer to the center than the inner end position of the auxiliary stirring blade 49. It is extended.

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. 14 to 16, the feeder 34 has a casing 52 fixed to the lower surface of the soil quality improving material supply opening 50 in the storage tank 33, and this casing 52 has the soil quality improving material supply opening 50. Has an inflow port 52a communicating with the above and a supply port 52b opened downward, and the wall surface of the intermediate part thereof is an arc-shaped fixed amount supply part 52c. Inside the fixed amount supply part 52c, a rotor 53 is provided with a rotating shaft. The rotor 53 is provided so as to be fitted to the rotor 54.
Are driven to rotate by a rotary shaft 54.
The rotor 53 is provided with a plurality of partition walls 53a that are in radial contact with the inner wall surface of the fixed quantity supply unit 52c,
The partition walls 53 adjacent to each other each time the rotor 53 rotates by a predetermined angle
The soil improvement material corresponding to the space between a and 53a is separated. Therefore, every time the rotor 53 rotates by a predetermined angle, the soil improvement material corresponding to the volume of the space described above is supplied in a fixed amount. Therefore, by controlling the rotation speed of the rotor 53, it is possible to control the supply amount of the soil improvement material,
That is, the higher the rotation speed of the rotor 53, the greater the amount of soil improvement material that can be supplied. For this purpose, the rotary shaft 54
Is extended to the outside of the casing 52, a pulley 54a is connected to the end of the rotary shaft 54, and a transmission belt or the like is provided between the pulley 54a and the output shaft 55a of the motor 55. The power transmission member 56 is interposed. Here, in order to strictly control the amount of soil improvement material supplied by the rotation of the rotor 53, it is desirable to use a variable speed electric motor as the motor 55. If so, a hydraulic motor may be used.

In the soil conditioner supplying device 30 having the above-described structure, the storage tank 33 is filled with the soil conditioner, and this filling operation is performed from the flexible container. Since the soil improvement material supply device 30 is located at a high place, the opening / closing lid 38 provided on the top plate portion 36 is opened to suspend the flexible container, and the opening / closing lid 38 is placed inside the storage tank 33. It must be inserted and the cutter 40 must be torn at its lower end. For this purpose, the main body frame 2 is provided with a crane 57 at a position on one side thereof. This crane 57
17, a swivel portion 57a is provided on the main body frame 2, a support member 57b is provided upright on the swivel portion 57a, and a base end of an arm 57c that telescopically extends and contracts on the support member 57b. The portion is pivotally supported so that the cylinder 57d can be lifted and lowered. And the arm 57
A wire 59 connected to the hook 58 is connected to the tip of c, and the hook 58 can be moved up and down by winding the wire 59 up or down.

As described above, the earth and sand and the soil improving material are conveyed by the conveyor belt 11 constituting the carry-in conveyor 10. The end portion of the carry-in conveyor 10 is the soil 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. 18 to 21 show the internal structure of the processing tank 60 that constitutes the processing mechanism unit 4.

First, as is apparent from FIGS. 18 and 19, 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. 20 and 21, an even number of paddle mixers 64, for example, two paddle mixers 64 are provided in parallel in the processing tank 60. The paddle mixer 64 has a rotary shaft 65, and a large number of paddles 66, which are intermittently provided blades as a stirring / transferring member, are planted on the rotary shaft 65 so as to form a predetermined angle (for example, every 90 °). The paddle 6 is rotated by rotating the rotary shaft 65.
6 is rotationally driven to agitate the inside of the treatment tank 60, and the earth and sand introduced into the treatment tank 60 and the soil-improving material are agitated and uniformly mixed, and transferred toward the discharge port 63 side. It will be. Then, this transfer amount changes according to the angle of the paddle 66.

Since the processing tank 60 is installed on the main body frame 2 together with other equipment, there is a restriction 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 the soil improving agent introduced from 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. 22 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 the bucket B of the hydraulic excavator PS, and is thrown into the sediment hopper 20 of the soil improvement machine. This earth and sand hopper 2
While the earth and sand are conveyed by the carry-in conveyor 10 from 0,
Soil improvement material is supplied from the soil improvement material supply device 30,
Supplied on the surface of sediment. Then, the carry-in conveyor 10
While the mixture of the earth and sand and the soil conditioner is fed into the treatment tank 60 from the end of the container through the inlet 62, the earth and sand and the soil conditioner are stirred and mixed by the action of the paddle mixer 64 provided in the treatment tank 60. Move to the position of the discharge port 63. 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 80.
And is deposited at a predetermined position.

As described above, when the produced improved soil is deposited on the discharge conveyor 71 at a predetermined position, the improved soil may be directly deposited 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.

By the way, the volume of the storage tank 33 in the soil improvement material supply device 30 determines the continuous operation time of the soil improvement machine. Soil improvement is designed to be continuously processed. When soil and sand and a soil improving agent 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 of a soil improving material supply device 30 having a predetermined volume. Storage tank 33
Since it is supplied from the factory, it becomes a batch type and must be newly replenished before the internal soil improvement material is completely consumed.

The replenishing work of the soil improvement material to the storage tank 33 is performed as follows. First, with the opening / closing lid 38 provided on the top plate portion 36 open, the flexible container is hooked and lifted by the hook 58 of the crane 57,
The flexible container is arranged at a position above the opening 36a of the top plate portion 36 opened by opening the opening / closing lid 38, and the wire 59 is drawn out, so that the lower portion of the flexible container is inserted into the storage tank 33. Since the cutter 40 is provided in the storage tank 33, the flexible container is cut by the cutter 40, and as a result, the soil improvement material is supplied from the cut portion into the storage tank 33. Since the worker performs the soil improvement material replenishing work in the vicinity of the soil improvement material supply device 30 of the soil improvement machine, the hydraulic excavator PS must be stopped, and therefore the soil improvement process is substantially performed. I have to stop.

From the above, the continuous operation time of the soil improvement treatment substantially depends on the volume of the storage tank 33. Therefore, it is necessary to use a large storage tank so that the soil improvement machine can be continuously operated for as long as possible. The storage tank 33 has a bellows portion 37 as an upper tank portion.
It is for this reason that the bellows portion 37 is provided with the ridge and the bellows portion 37 is expanded and contracted. When soil improvement is performed in a predetermined yard, the bellows portion 37 is extended to increase the inner volume of the storage tank 33, so that a large amount of soil improvement material can be stored at one time. Further, when the soil improvement machine is transported, the bellows portion 37 is reduced.

When the bellows portion 37 is extended, the storage tank 3
When the height dimension of 3 becomes extremely large and the soil improvement material is filled almost completely inside, the storage tank 3
Within 3, the weight of the soil improvement material acts downward. Also,
In the storage tank 33, the storage tank 33 is operated by the operation of the stirring means 44 in the hopper, particularly by the rotation of the main stirring blade 46.
Inside, a flow is formed in the direction of pushing out the soil improvement material from the central portion toward the outer peripheral side. Then, the flow of this soil improvement material is the peripheral body portion 35 in the lower tank portion 35.
Since it is regulated by the inner surface of b, it is converted into an upward flow, that is, a flow in a direction opposite to the self-weight direction of the soil improvement material.

By the way, inside the storage tank 33, an inclined partition wall 51 is provided between the bellows portion 37 and the lower tank portion 35 forming the upper tank portion to form a partition between the upper storage area and the lower storage area. Therefore, the weight of the soil improvement material in the upper storage region in the bellows portion 37 is received by the surface of the inclined partition wall 51. Moreover, since the in-hopper stirring means 44 is provided in the lower tank portion 35, that is, in the lower storage area, the in-hopper stirring means 4 is provided.
At the position where 4 is arranged, the own weight of the soil improvement material located in the upper storage area in the bellows portion 37 does not substantially act.

From the above, in the storage tank 33, as shown in FIG. 23, the gravity of the soil improvement material acts on the upper storage area by the gravity in the direction indicated by the arrow X ₁ due to the inclined partition wall 51. In the lower storage area, gravity acts in the direction indicated by arrow X ₂ . However, in the lower storage area, the self-weight of the soil improving material below the position of the inclined partition wall 51 acts and is not affected by the self-weight of the soil improving material in the upper storage area. That is, by providing the inclined partition wall 51, the force for compressing the soil improvement material toward the bottom plate 35a of the lower tank 35 is significantly reduced. Since the agitating means 44 in the hopper is arranged in the lower storage area,
Resistance to rotation by the rotation driving means 47 is significantly reduced, and smooth rotation can be achieved with a light load.

When the agitating means 44 in the hopper is actuated, the rotation of the main agitating blade 46 causes the soil-improving material to flow out from the central side toward the outer peripheral direction as shown by an arrow Y ₁ in FIG. It will be. However, the agitating means 44 in the hopper includes, in addition to the main agitating blade 46, a predetermined number of auxiliary agitating blades 49 which are different in position in the rotational direction with respect to the main agitating blade 46. The auxiliary stirring blade 49 is inclined toward the rotation center side so as to be rearward in the rotation direction. Therefore, due to the action of the auxiliary stirring blade 49, the soil improving material exerts a force in the direction of pushing it back from the outer peripheral side toward the center, as shown by the arrow Y ₂ . As a result, in the rotation locus region of the auxiliary stirring blade 49, the soil improvement material is stirred so as to be in a kind of turbulent state, and fluidization is further promoted at this position. Since the soil improvement material supply opening 50 is arranged in this turbulent flow region, the supply of the soil improvement material from the storage tank 33 side to the feeder 34 side is further promoted.

Here, the force in the direction for pushing the soil improvement material back to the central portion side, that is, the force in the Y ₂ direction, is applied to the Y by the main stirring blade 46.
Set it so that it is weaker than the force in _one direction. Moreover,
The auxiliary stirring blade 49 has a length that does not reach the portion of the communication passage 51a formed in the central portion of the inclined partition wall 51 in order to allow the soil improving material to flow from the upper storage region to the lower storage region. As a result, at the position of the communication passage 51a, the main stirring blade 46 is
Since only the force in the Y ₁ direction due to is applied, the soil improvement material can be smoothly transferred from the upper storage region to the lower storage region. Furthermore, the reason why the two storage areas are partitioned is
Since it is an inclined surface that descends toward the communication path 51a side, all the soil conditioner in the upper storage area surely moves to the lower storage area.

As described above, in the lower tank portion 35, the auxiliary stirring blade 49 pushes back the flow direction of the soil improvement material in the direction opposite to the flow direction of the main stirring blade 46. The acting force of the main stirring blade 46 outward in the radial direction is set to be larger.
Therefore, the soil improving material is formed to flow upward along the inner surface of the peripheral body portion 35b, that is, in the direction of arrow Z in FIG. However, Y to cancel the Y ₁ direction
_Since the force in the _two directions is working, the vector in the Z direction becomes small, and the pressing force in the gravity direction X ₂ from above, which is the direction opposite to the Z direction due to the weight of the soil improvement material, also becomes small. The degree to which the soil improvement material is compressed by these opposing forces becomes extremely small, and there is no possibility that the soil improvement material will be compressed and solidified near the bottom plate 35a on the peripheral body portion 35b side of the lower tank portion 35.

The amount of the soil conditioner supplied from the soil conditioner supply opening 50 to the feeder 34 depends on the amount of the soil conditioner added to the soil. On the other hand, the transfer of the soil quality improving material from the upper storage area to the lower storage area is performed by the rotation of the main stirring blade 46, and therefore, the inflow amount and the outflow amount of the soil quality improving material into the lower storage region are almost equal to each other. I have to do it. When performing ground improvement, it is general that the mixing ratio of the soil improvement material to the soil is larger than that of the improved soil used as the backfill material. Therefore, it is necessary to change the supply amount of the soil improvement material according to the use of the improved soil produced by the soil improvement machine.

Thus, when the agitating means 44 in the hopper has a predetermined configuration, the inflow amount of the soil quality improving material from the upper storage area to the lower storage area depends on the opening diameter of the communication passage 51 formed in the inclined partition wall 51. It changes with. That is, when the opening diameter of the communication passage 51 is increased, the inflow amount of the soil improvement material is correspondingly increased. Therefore, for example, in the case where the inclined partition wall is configured to have an appropriate opening diameter of the communication passage when the ground is improved, when it is diverted to a material for manufacturing the backfill material, as shown in FIG. The communication portion throttle member 100 is continuously provided below the inclined partition wall 51. This communicating portion throttle member 1
Reference numeral 00 is a ring-shaped member having a predetermined width, and an annular gap is formed between the lower end portion and the bottom plate 35a of the lower tank portion 35. Therefore, this gap is the communication passage 100.
a. The opening area of the communication passage 100a is smaller than the opening area of the inclined partition wall 51. As a result, the passage area for the soil improvement material to migrate from the upper storage region to the lower storage region becomes smaller. As a result, the inflow and outflow of soil improvement material in the lower storage area can be balanced, the inflow to the lower storage area exceeds the outflow, and the pressure in the lower storage area rises abnormally. In addition, there is no shortage of supply of the soil improvement material to the feeder 34.

Further, with the configuration as shown in FIG. 25, it becomes possible to arbitrarily adjust the transfer amount of the soil improvement material from the upper storage region to the lower storage region. That is, as shown in the figure, the holding cylinder 10 extending vertically downward is provided at a portion of the inclined wall portion 51 that opens as the communication passage 51a.
1 is provided, and a ring-shaped communicating portion diaphragm member 102 is arranged so as to surround the holding cylinder 101. Then, the communication area between the upper storage region and the lower storage region is changed by adjusting the vertical position of the communication portion throttle member 102. For this purpose, the adjusting means 103 is provided between the communicating portion throttle member 102 and the holding cylinder 101. The adjusting means 103 includes a bracket 104 extending from the outer peripheral surface of the holding cylinder 101 and a communicating portion throttle member 1.
02, and a bracket 105 extending from the outer peripheral surface of the screw 02.
6 is inserted and fixed with a nut 107.

With this structure, the communication area can be set to an arbitrary value by appropriately adjusting the height position of the lower end of the communication portion throttle member 102 with the nut 107. Therefore, when the improved soil improved by the soil improvement machine is used, for example, for soil improvement, the communicating portion throttle member 102 is raised to widen the passage area and used as a backfill material. In this case, the passage cross-sectional area can be reduced by fixing the communicating portion throttle member 102 at the lowered position. Therefore, the soil improvement material supply device 30 can be commonly used for the soil improvement and the manufacturing of the backfill material for the excavation site.

Further, the agitating means in the hopper is for agitating the soil quality improving material in the lower storage area and feeding it into the feeder 34 through the soil quality improving material supply opening 50. Therefore, when the amount of the soil improvement agent supplied per unit time is large, it is necessary to more efficiently stir the soil improvement agent by the agitating means in the hopper and increase the outward transfer amount. To this end, as shown in FIG. 26, the end surface 146a on the front side in the rotation direction of the main stirring blades 146 forming the in-hopper stirring means 144 is inclined, and the end surface 146a is rotated backward in the rotation direction as it goes toward the tip side. Tilt towards. Thereby, the amount of outward flow with respect to the soil improvement material can be increased.

The supply amount of the soil improvement material by the feeder 34 can be controlled by changing the rotation speed of the motor 55. In addition, when the treatment work itself is different, such as ground improvement and backfilling, and when performing various soil improvement treatments, there is a significant difference in the mixing ratio between the soil and the soil improvement material. It is desirable to change the rotor 53 in the feeder 34 to change the amount of soil improvement agent supplied per revolution of the rotor. When the amount of soil improvement agent supplied is small, the stirring means in the hopper is as shown in FIG.
When the agitating means 44 in the hopper having the structure shown in FIG.
4 can also be used.

[0057]

EFFECTS OF THE INVENTION Since the present invention is constructed as described above, even if the volume of the storage tank serving as the supply source of the soil conditioner is increased, the soil conditioner can be continuously treated for a long period of time. It is possible to smoothly stir the inside of the storage tank with a light load, and there is an effect that the soil improvement material is not compressed from above and below and solidified in the storage tank.

[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 supply device according to the embodiment of the present invention.

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

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

FIG. 11 is a plan view showing the soil improvement material supply device of FIG. 8 with an opening / closing lid removed.

12 is a cross-sectional view taken along the line BB of FIG.

13 (a) is a sectional view taken along line CC of FIG.
FIG. 3B is a cross sectional view of the main stirring blade.

FIG. 14 is a plan view of the feeder according to the embodiment of the present invention.

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

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

FIG. 17 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. 18 is a plan view of the processing tank according to the embodiment of the present invention.

FIG. 19 is a front view of FIG. 18.

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

21 is a sectional view taken along line GG of FIG.

FIG. 22 is an operation explanatory view showing a state where soil improvement is performed by the self-propelled soil improvement machine according to the embodiment of the present invention in the yard.

FIG. 23 is an operation explanatory view of the soil improvement material supply device according to the embodiment of the present invention.

FIG. 24 is a sectional view similar to FIG. 12, showing another configuration example of the soil improvement material supply device according to the present invention.

FIG. 25 is a cross-sectional view of essential parts showing another configuration example of the soil improvement material supply device according to the present invention.

FIG. 26 is a plan view showing another structural example of the stirring means in the hopper used in the present invention.

FIG. 27 is an explanatory view of the operation of the soil improvement material supply device according to the conventional technique.

[Explanation of symbols]

1 Lower Traveling Body 2 Main Frame 3 Supply Section 4 Processing Mechanism Section 5 Discharging Section 10 Carrying Conveyor 20 Sediment Hopper 23 Sieving Means 30 Soil Conditioning Material Supply Device 31 Support 32 Base Plate 33 Storage Tank 34 Feeder 35, 135 Lower Tank Section 36 Top plate portion 37 Bellows portion 38 Opening / closing lid 39 Hook locking tool 40 Cutter 44,144 Stirring means 45 in hopper 45 Rotating shaft 46,146 Main stirring blade 47 Rotation drive means 48 Holding member 49 Auxiliary stirring blade 50 Opening for supplying soil improvement material 51 inclined partition wall 51a, 100a
Communication path 53 Rotor 54 Crane 58 Hook 60 Processing tank 64 Paddle mixer 100, 102
Communication passage throttle member 101 holding cylinder 103 adjusting means

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁷ Identification code FI // B01J 4/02 B01J 4/02 E (72) Inventor Tetsushiro Miura 2-6-2 Otemachi, Chiyoda-ku, Tokyo Hitachi Construction Machinery Co., Ltd. (72) Inventor Toshikazu Murai, 650, Jinrachicho, Tsuchiura City, Ibaraki Prefecture Hitachi Construction Machinery Co., Ltd., Tsuchiura Plant (56) Reference JP-A-9-195265 (JP, A) (JP, U) (58) Fields investigated (Int.Cl. ⁷ , DB name) E02F 7/00 B01F 3/18 B01F 7/04 B01F 15/02 E02D 3/12 B01J 4/02

Claims (8)

(57) [Claims] 1. A soil improving material supply device used in a soil improving machine for mixing soil with a soil improving material to improve the soil, and a storage tank for the soil improving material, and an inside of the storage tank being an upper storage area and a lower storage area. With storage area
It is provided in the storage tank so as to form a compartment, and its center
Communication that connects the upper storage area and the lower storage area to the part
Sloping partition wall with passage and supply of soil improvement material provided on the outer peripheral side of the bottom plate of the storage tank
Is provided between the inclined opening and the bottom wall of the storage tank.
And a compound that extends radially from the center of the bottom plate of the storage tank.
A soil improvement material supply device comprising: an in- tank stirring means having several stirring blades; and a feeder that is connected to the soil improvement material supply opening of the storage tank and that supplies the soil improvement material to the earth and sand. . 2. The storage tank is formed in a cylindrical shape having a bottom at least at a lower side thereof, and the inclined partition wall has an inclined surface of a substantially inverted truncated cone shape, and the tank agitating means comprises: The storage tank is provided with a rotary shaft arranged so as to penetrate through the central portion of the bottom plate , and the plurality of stirring shafts are provided.
拌翼it has been connected to a location within the storage tank of the rotary shaft
And soil improvement agent supply apparatus according to claim 1, wherein the are. 3. Each of the stirring blades is used as a main stirring blade, and the tip portions of the main stirring blades are connected by a circular holding member, and a plurality of radially inwardly-arranged holding members are provided at predetermined pitch intervals. The soil improving material supply device according to claim 2, wherein auxiliary soil impellers are attached so that the formation position of the soil improving material supply opening is within the range of the rotation locus of these auxiliary soil impellers. 4. The soil-improving-material feeding device according to claim 3, wherein the auxiliary stirring blade is inclined such that a side of the front end surface near the center of rotation of the auxiliary stirring blade faces rearward in the rotation direction. 5. A cylindrical communication part throttle member extending toward the bottom plate side of the storage tank is connected to a communication passage forming part between upper and lower storage regions of the inclined partition wall. The soil improvement material supply device according to claim 1. 6. The soil improvement material supply device according to claim 5, wherein the narrowed portion of the communicating portion is vertically displaceable. 7. A traveling means, a main body frame provided on the traveling means, a mixing means provided on the main body frame for mixing earth and sand and a soil improvement agent, and one side in the longitudinal direction of the main body frame. The earth and sand hopper provided, the storage tank for soil improvement material, and the inside of this storage tank are divided into the upper storage area and the lower storage area.
It is provided in the storage tank so as to form a compartment, and its center
Communication that connects the upper storage area and the lower storage area to the part
Sloping partition wall with passage and supply of soil improvement material provided on the outer peripheral side of the bottom plate of the storage tank
Is provided between the inclined opening and the bottom wall of the storage tank.
And a compound that extends radially from the center of the bottom plate of the storage tank.
In- tank stirring means having a number of stirring blades, a feeder connected to the soil-improving material supply opening of the storage tank and supplying the soil-improving material to the earth and sand, and the earth and sand supplied from the earth and sand hopper and the feeder A self-propelled soil improvement machine, comprising: a carry-in conveyor provided below the earth and sand hopper so as to transfer the supplied soil improvement material to the mixing means. 8. The storage tank comprises an upper tank portion that is vertically expandable and contractible, and a lower tank portion that is connected to the upper tank portion and that has a cylindrical shape with a bottom side having a bottom. 8. The self-propelled soil improvement machine according to claim 7, wherein is configured to be fixed to the upper part of the lower tank part.