JP2001323457A - Self-traveling soil improving machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a soil improver hopper having a large capacity; and compactly store the soil improver hopper during transportation or the like. SOLUTION: The soil improver hopper 30 installed on a mixed material conveyor 10 has a storage container 31 and a feeder 32, with the storage container 31 comprising a lower plate portion 60, a top plate portion 61, and a bellows portion 62 interposed between the lower plate portion 60 and the top plate portion 61. A flexible sheet 63 constituting the bellows portion 62 is curled so that it can be inwardly folded to a position approximately intermediate between upper and lower bones 64 thereof. When the top plate 61 is raised to expand the bellows portion 52, the sheet assumes a soil improver storing state in which it can store a large amount of soil improver therein. When the top plate portion 61 is lowered, the flexible sheet 63 of the bellows portion 62 assumes a stored state in which its curled position is folded inwards. In the stored state, the height of the storage container 31 can be reduced.

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 for improving the quality of earth and sand to meet a predetermined purpose. It relates to a self-propelled soil improvement machine.

[0002]

2. Description of the Related Art For example, in improving or strengthening the ground, a soil improvement machine is used to produce an improved soil in which a soil improvement material made of a solidified material or the like is uniformly mixed with earth and sand. This soil improvement machine is configured to include a mixing means for uniformly mixing the soil and the soil improvement material, and a means for supplying the sand and the soil improvement material to the mixer. JP-A-2000-4563 discloses a mixing type soil improvement machine disclosed in
A crushing type soil improvement machine and the like disclosed in 195265 have been conventionally known.

[0003] The structure of the mixing means differs between the mixing system and the crushing system. In other words, in the mixing type soil improvement machine, a paddle mixer or the like is used to move the earth and sand and the soil improvement material in a substantially horizontal direction while stirring and mixing. In addition, while the earth and sand and the soil improvement material are dropped by their own weight, they are crushed and mixed by applying a blow with a rotary blower. In any case, in order to supply the earth and sand and the soil improvement material to the mixing means, the apparatus is provided with a transport conveyor for transporting the mixed material. On the conveyor, a soil hopper for supplying earth and sand and a soil improvement material hopper for supplying soil improvement material are provided. A modifier is added.

[0004] The earth and sand is supplied to the earth and sand hopper using earth and sand input means such as a hydraulic shovel, and a configuration in which the earth and sand is conveyed by a belt conveyor can also be adopted.
On the other hand, the soil improvement material hopper is roughly composed of a storage container for storing the soil improvement material, and a feeder for continuously or almost continuously supplying a controlled amount of the soil improvement material from the storage container. Therefore, as long as the earth and sand and the soil improving material are continuously supplied from the soil hopper and the soil improving material hopper to the belt conveyor, the soil improving process is continuously performed by the mixing means, and the generated improved soil is moved to a predetermined position by the belt conveyor or the like. Can be deposited.

[0005]

By the way, in order to use the soil improvement machine between a plurality of sites where soil improvement processing is performed, the soil improvement machine is transported using a trailer. There are places where the height of the vehicle is restricted. For this reason, it is necessary to make the height of the soil improvement machine as small as possible. Regardless of whether the mixing method or the crushing method is employed, in the overall configuration of the soil improvement machine, the earth and sand hopper and the soil improvement material hopper, which are the mechanisms for supplying the mixed material, and the conveyor that conveys the mixed material, It is located higher than the mixing means. Therefore, it is desirable to lower these height positions from the viewpoint of transportation and the like.

[0006] Excavated soil or other earth and sand can be sequentially supplied to the earth and sand hopper by a hydraulic shovel or the like. Therefore, since it is sufficient that the earth and sand supplied in the earth and sand hopper have such a capacity that intermittently supplied earth and sand can be continuously conveyed by the belt conveyor, the size and size can be reduced to some extent. On the other hand, the soil improvement material supplied to the mixing means is stored in the soil improvement material hopper in advance. The soil improving material is being consumed while the soil improving process is being performed, and cannot be replenished during the operation. Therefore, when the remaining amount of the soil improving material hopper becomes lower than a certain level, the soil improving process is interrupted to replenish the soil improving material. Generally, the soil conditioner is filled in a flexible container, and replenishment to the soil conditioner hopper is performed from the flexible container.

[0007] If the capacity of the soil improvement material hopper is small, the frequency of stopping the soil improvement process and replenishing the soil improvement material increases, and as a result, the working efficiency is significantly reduced. Therefore, from the viewpoint of work efficiency, it is necessary to increase the volume of the soil improving material hopper as much as possible, and therefore, the height position of the soil improving material hopper becomes extremely high. That is,
To continuously and efficiently perform the soil improvement treatment, which is the original operation of the soil improvement machine, for a long time, the height dimension of the soil improvement material hopper cannot be reduced.

[0008] From the above, when transporting a soil improvement machine provided with a soil improvement material hopper capable of storing a large amount of soil improvement material by a trailer, the soil improvement material is restricted in view of the vehicle height restriction when passing through a general road. The hopper must be removed. Therefore, when the machine is brought into the site where soil improvement is performed, it is necessary to re-install the soil improvement material hopper. In particular, the soil improvement material hopper is not a simple container, but means for supplying a certain amount of soil improvement material,
It is necessary to provide a driving means such as a means for stirring the inside of the hopper, and there is a possibility that these driving means may be damaged during the work of removing and attaching the soil improving material hopper. Further, when at least a part of these driving means is of a hydraulic drive type, operations such as attaching and detaching a hydraulic pipe are also required. Therefore, there is a problem that the work of attaching and detaching the soil improving material hopper from the soil improving machine is very troublesome and requires a long time.

The present invention has been made in view of the above points, and an object of the present invention is to provide a soil improvement material hopper having a large capacity, and to improve the soil improvement during transportation. An object of the present invention is to make it possible to store a material hopper compactly.

[0010]

SUMMARY OF THE INVENTION In order to achieve the above-mentioned object, the present invention provides a main body frame connected to a traveling means, which is provided with earth and sand supplied from a soil hopper and a soil improvement material supplied from a hopper. Conveyor for transporting
Mixing means for mixing a mixed material consisting of earth and sand and a soil improving material, wherein the soil improving material hopper is self-propelled having a storage container for the soil improving material and a feeder for supplying the soil improving material from the storage container. A soil improvement machine, wherein the storage container is provided with a lower plate portion provided with the feeder, an opening for supplying the soil improvement material to the feeder, and a supply port for the soil improvement material. A top plate portion having a lid that opens and closes, a stretchable bellows portion that connects between the lower plate portion and the top plate portion, and the bellows portion has a tubular flexible sheet, The flexible sheet is provided with a loop-shaped support bone attached at predetermined pitch intervals in the vertical direction.

Here, the top plate can be moved up and down, but it is necessary to hold the top plate at least in a lifted state. Therefore, the top plate portion is provided with a plurality of overhang portions from the attachment portion to the bellows portion, and the support rods are vertically provided on each of the overhang portions, and each of the support rods is erected on the main body frame. And the supporting rods protrude from the guide cylinder, thereby extending the bellows portion to expand the internal volume of the storage container, and a top plate portion. The height of the bellows can be reduced so that the bellows portion can be selectively fixed to the retracted state. Further, in order to fixedly support the lower plate portion of the storage container, a support plate may be fixedly provided at the upper end portion of the guide tube, and the lower plate portion may be provided on the support plate. it can.

In the storage container, the flexible sheet constituting the bellows portion can be provided with a fastener which can be opened and closed at a position between the upper and lower supporting bones. The mounting part of this fastener is
It is mainly for maintenance, for example, it can be an openable window for internal inspection of the storage container, and it can also be configured to divide the storage container into two vertically. Then, in order to seal the inside of the storage container with the fastener closed, a sealing sheet for covering the mounting portion of the fastener is mounted on the inner surface side of the flexible sheet, and the sealing sheet is attached from the mounting portion of the fastener. The upper part is fixed to the inner surface of the flexible sheet, and the lower part is kept free.

[0013] The soil improvement material is generally supplied from a flexible container. For this purpose, a sharp-pointed cutter is provided on the top plate to cut the lower part when a flexible container filled with soil improvement material is placed, and this cutter may be made of a chain, a string, etc. It is configured to be suspended from the lower surface of the top plate by a flexible suspension member. The cutter is tilted between a cutter operating state in which a cut portion of the cutter base is suspended upward from the cutter base suspended via the flexible suspension member and a cutter storage state in which the cutter is oriented substantially horizontally. When it is mounted as possible, the cutter does not become a hindrance when the bellows portion is folded and the storage container is reduced to the storage state.

[0014]

Embodiments of the present invention will be described below with reference to the drawings. First, FIGS. 1 and 2 show the entire configuration of a self-propelled soil improvement machine, and FIG. 3 shows an exploded configuration of a soil improvement mechanism.

In the drawing, reference numeral 1 denotes a lower traveling body,
The lower traveling body 1 is provided with crawler-type means having, for example, left and right crawler tracks 1a. A main body frame 2 constituting a chassis is installed on the lower traveling body 1, and a mixed material supply unit 3 for supplying a mixed material composed of earth and sand and a soil improvement material to the main body frame 2 is agitated and mixed. Mixing means 4, an improved soil discharging section 5, and the like. In view of the processing flow, the arrangement position of the mixed material supply unit 3 is forward,
The conveying direction of the mixed material in the mixed material supply unit 3 is obliquely upward. In addition, in the mixing means 4, the flow of the mixed material and the improved soil obtained by uniformly mixing them are substantially in the horizontal direction, and the generated improved soil is discharged downward. And is transported diagonally upward. Further, a driving device 6 having a built-in driving machine such as an engine, a hydraulic pump, and a direction switching valve unit is installed at an upper position of the mixing means 4.

The mixed material supply section 3 has a mixed material transport conveyor 10, which is supplied with earth and sand from a sediment hopper 20, and then supplied with a soil improvement material from a soil improvement hopper 30. The mixed material transport conveyor 10 has a transport belt 11, which is provided between a drive wheel 13 supported by a frame 12 and a driven wheel 14. An adjustment mechanism is provided. In order to support the transport surface of the transport belt 11, guide rollers 15 are provided below the transport surface at predetermined pitch intervals.
Further, regulating plates 16, 16 are provided at positions on the left and right sides of the conveying surface of the conveying belt 11 at positions upstream of the mounting portion of the earth and sand hopper 20.
Is used to determine the height of conveyance by the conveyance belt 11, whereby the amount of earth and sand conveyed is controlled.

The earth and sand hopper 20 is composed of a substantially rectangular frame-shaped member installed on the conveyor belt 11 so that a predetermined amount of earth and sand can be stored on the conveyor belt 11. Although not shown, the earth and sand hopper 20 is provided with an outlet for earth and sand, and when the conveyor belt 11 is driven, the amount of earth and sand in the earth and sand hopper 20 is continuously increased by an amount corresponding to the opening area of the outlet. Will be conveyed in a reliable manner.

At the upper part of the earth and sand hopper 20, a vibrating screen 21 having a lattice, a wire mesh, and the like mounted on a frame fitted to the earth and sand hopper 20 is installed. The vibrating sieve 21 is vibrated by a vibrating means 22 having a motor. In order to enable the vibration, the vibrating sieve 21 is attached to the support frame 17 erected on the main body frame 2 by a spring or the like. Vibration is supported via a vibration supporting member 23. As a result, the earth and sand put on the vibrating sieve 21
By vibrating 1, solid foreign matter such as concrete, rock, metal, etc. mixed in the earth and sand is separated, and only the earth and sand is taken into the earth and sand hopper 20. Further, the vibrating sieve 21 is inclined obliquely downward toward the end of the main body frame 2, so that the solid foreign matter remaining on the vibrating sieve 21 moves downward in the inclination direction due to vibration,
It is designed to be discharged to the outside from the end. In addition, the sieve provided in the earth and sand hopper 20 may be a fixed sieve, or may not be provided if solid foreign matter is removed in advance.

The soil improving material hopper 30 has a storage container 31 for storing a predetermined amount of the soil improving material, and a feeder 32 for supplying the soil improving material from the storage container 31 onto the transport belt 11 of the mixed material transporting conveyor 10. It has. Here, the soil improvement material is mixed with earth and sand in order to improve or modify the soil quality, and a material suitable for the purpose of each soil improvement and reforming is used. For example, when used as ground improvement or backfill soil, lime or cement, or a mixture of these with various additives for promoting solidification is used. Further, in the case of modifying the soil of the ground or the acid soil, etc., an appropriate soil improving material is supplied.

The feeder 32 is for supplying the soil improving material in a regulated supply amount. For this purpose, as shown in FIGS. 4 and 5, the feeder 32 has an inflow portion 33 a on the upper side through which the soil improvement material flows from the storage container 31 and an outflow portion for supplying the soil improvement material to the mixed material transport conveyor 10 on the lower side. Part 33b, a casing 33 serving as a supply amount control part 33c formed in an arc shape between the inflow part 33a and the outflow part 33b, and a rotor 3 in the supply amount control part 33c.
4, the rotor 34 is driven to rotate by a motor 35. Accordingly, when the rotor 34 is rotated, a predetermined volume of the soil improving material is supplied to the mixed material transport conveyor 1.
Thus, the supply amount of the soil improving material can be changed in accordance with the rotation speed of the rotor 34.

The end of the mixed material transporting conveyor 10 is connected to a mixing container 40 constituting the mixing means 4. The mixing container 40 is a rectangular container arranged in the longitudinal direction of the main body frame 2, that is, in a substantially horizontal direction. As shown in FIGS. 6 and 7, an introduction portion is provided at an upper portion on the front side of the mixing container 40. An inlet 41 is provided and a lower outlet on the rear side is connected to an outlet 42 which constitutes a discharge portion. The other portions are hermetically closed. Mixing container 40
Inside, two paddle mixers 43 are provided in parallel. The paddle mixer 43 has a rotating shaft 44, and a large number of paddles 45 are implanted on the rotating shaft 44 at a predetermined angle (for example, every 90 °). 45 is rotated to stir the inside of the mixing container 40, and the earth and sand and the soil improving material guided into the mixing container 40 are transferred toward the discharge port 63 side while being stirred and uniformly mixed. .

In the mixing vessel 40 having the above-described structure, the earth and sand introduced from the inlet 41 and the soil improving material are uniformly stirred and mixed by the action of the paddle mixer 43.
Improved soil is produced while being transported toward the outlet 42. The improved soil thus produced is discharged from the discharge port 42 to the improved soil discharge section 5 by the action of its own weight. Here, the improved soil discharging unit 5 includes a carry-out conveyor 50 that conveys the improved soil generated by the mixing means 4. This unloading conveyor 50
Extends obliquely upward from the lower part of the mixing vessel 40, and the improved soil is deposited at a predetermined position at a predetermined position. Incidentally, the mixing means is not limited to the above configuration,
For example, a screw-type mixing means, a crushing-type mixing means, or the like can be used.

In order to perform the soil improvement process using the soil improvement machine having the above-described configuration, a means for charging earth and sand is required.
It is desirable to use a hydraulic excavator as the means for charging earth and sand. Therefore, the earth and sand is scooped out from the sediment accumulation place by the bucket of the excavator, and the earth and sand hopper 20 is removed.
To start the soil improvement process. Then, the mixed material transporting conveyor 10 is
While the soil is transported, the soil improving material is supplied from the soil improving material hopper 30 and supplied onto the surface of the soil. Then, the mixture of the earth and sand and the soil improvement material is mixed from the end of the mixed material conveying conveyor 10 through the inlet 41 into the mixing container 4.
Then, the soil and the soil improving material are stirred and mixed by the action of the paddle mixer 43 provided in the mixing container 40 and moved to the position of the discharge port 42. And
By uniformly mixing the earth and sand and the soil improvement material in the mixing vessel 40, the improved soil in the aggregated state is produced. This improved soil is deposited at a predetermined position from a discharge port 42 via a discharge conveyor 50.

The soil improvement machine performs the soil improvement processing in the yard or the like as described above. The soil improvement machine is carried into various work sites, that is, places where the soil to be improved exists. The soil improvement process is performed, and therefore, the soil improvement machine is transportable.
For this reason, the entire machine has a compact configuration and is a self-propelled type equipped with a traveling means. The route transported by the transport means naturally includes a general road, so that the vehicle width and the vehicle height are limited. As is clear from FIG. 1, the soil improvement material hopper 30 is located at the highest place. However, since the soil improving material hopper 30 determines the continuous operation of the soil improving machine, it is desirable that the volume of the soil improving material hopper be as large as possible from the viewpoint of working efficiency and mechanical efficiency. Further, a sediment hopper 20 is also installed on the mixed material transporting conveyor 10, and the sediment hopper 20 is for storing a predetermined amount of sediment. However, the earth and sand is supplied by a charging means such as a hydraulic shovel. And
Therefore, the earth and sand hopper 20 provided with the vibrating sieve 21 at the top does not need to have a very large height dimension. In addition, since the mixed material conveying conveyor 10 is inclined and the earth and sand hopper 20 is installed at a low position, the upper end of the earth and sand hopper 20,
That is, the height at which the vibrating sieve 21 is disposed is not so high.

When the soil improving machine is transported, it is not necessary to fill the soil improving material hopper 30 with the soil improving material. When a solidifying material such as lime that solidifies earth and sand is used as the soil improving material, if the soil improving material is left inside the storage container 31, moisture is absorbed and solidified. Therefore, when the soil improvement treatment is not performed for a long time, including during transportation, almost all of the soil improvement material is discharged from the inside of the storage container 31 and emptied. Therefore,
The empty storage container 31 can be stored compactly, so that the height of the soil improvement machine during transportation can be reduced. That is, the height dimension of the storage container 31 is variable.

Thus, the height of the storage container 31 can be changed between the state shown in FIG. 8 and the state shown in FIG. The state shown in FIG.
Is a state in which the soil improving material can be filled with the soil improving material, and the state shown in FIG. 9 is a storage state in which the inside of the storage container 31 is emptied.

The storage container 31 includes a lower plate 60 and a top plate 6.
1 and a bellows portion 62 interposed between the lower plate portion 60 and the top plate portion 61. As shown in FIG. 10, the lower plate portion 60 and the top plate portion 61 are both made of a metal material such as a steel plate and have circular main plates 60 a and 61 a, and the top plate portion 61 To reinforce the main body plate 61a, an annular ring portion 61b is continuously provided around the periphery thereof, and the ring portion 61b extends downward. The bellows portion 62 has a flexible sheet 63 made of a tough and flexible synthetic resin or the like.
Has a cylindrical shape. On the outer surface of the flexible sheet 63, a support bone 64 formed of a metal wire formed in an annular shape is fixed at a predetermined pitch in the vertical direction. The lower end of the flexible sheet 63 is fixed to the upper surface of the main body plate 60a of the lower plate portion 60 by an appropriate fixing means such as bonding or clamping, and the upper end portion is fixed to the lower surface of the top plate portion 61 by similar means. It is fixed. The outer diameter of the support bone 64 is slightly smaller than the inner diameter of the ring plate 61 b of the top plate 61. Further, the supporting bone 64 is covered with a fastening sheet 64a, and is fixedly held by sewing or bonding the fastening sheet 64a to the outer surface of the flexible sheet 63.

The flexible sheet 63 is bent so as to be folded inward at a substantially intermediate position between the upper and lower supporting bones 64, and the flexible sheet 63 extends substantially straight when the soil improving material is stored. As described above, when the flexible sheet 63 extends substantially straight, the internal volume of the storage container 31 is maximized, and a large amount of soil improvement material can be stored.

When the bellows portion 62 is reduced to the retracted state, the flexible sheet 63 is folded inwardly at the position where the flexible sheet 63 has been set. And the ring plate 61b of the top plate 61
Is located outside the flexible sheet 63 folded in this manner. As a result, in the stored state, the height of the storage container 31 is substantially equal to the thickness of the main body plates 60a and 61a of the lower plate portion 60 and the top plate portion 61, and the predetermined number of supporting bones 64 are slightly spaced. Is the total dimension with the height H in the stacked state. That is, the flexible sheet 63
Is not substantially added to the height dimension in the stored state. As a result, the height of the storage container 31 in the stored state becomes extremely short.

By the way, the inside of the storage container 31 is not completely vacant, but a hopper stirring means 65 is provided for stirring the inside of the soil improvement material and promoting the transfer to the feeder 32. Have been. This hopper stirring means 6
5 is configured as shown in FIG. Stirring means 65
Comprises a rotating shaft 65a provided in a central portion of the main plate 60a of the lower plate portion 60 so as to penetrate the lower plate portion 60, and a stirring rod 65b connected to the rotating shaft 65a,
The rotating shaft 65a is a motor 65 fixed to the lower surface of the lower plate portion 60.
The rotation is driven by c. Then, in order to feed the soil improvement material from the storage container 31 to the feeder 32, the lower plate portion 60
The main body plate 60a is provided with a soil improving material supply port 60b, and the feeder 32 is connected to the soil improving material supply port 60b. The main plate 60a of the lower plate portion 60 includes
Further, in order to empty the inside when the storage container 31 is in the storage state or the like, as shown by the phantom line in FIG.
A soil improvement material discharge portion 60c that can be opened and closed at 0a can be provided.

As shown in FIG. 13, the top plate 61 has a circular opening at the center of the main body plate 61a in order to supply a soil improving material. 6
A cover 67 (see FIG. 10), which slightly protrudes toward the upper side, is mounted so as to be openable and closable. Therefore, by opening the lid 67, pushing the flexible container containing the soil improving material into the opening of the top plate 61 by a predetermined amount, and cutting off the lower part, the soil improving material can be supplied. ing. A cutter unit 68 is mounted on the inner surface of the top plate 61 to cut the flexible container. The cutter unit 68 includes the cutter base 6.
9, a cutter base 69 is connected to a chain 71 as a flexible suspension member, and the other end of the chain 71 is connected to the main body plate 61 of the top plate 61.
On the lower surface of a, it is provided so as to be connected to a position avoiding the opening.

Here, the cutter 70 is shown in FIGS.
As shown in, the joining cutter member 70R divided into two parts,
70L, and each of the joining cutter members 70R, 70L is made of a substantially V-shaped plate material. The pointed part at the center is the cutout part 70Ra, 70La
A pair of arm portions 70Rb, 70Lb extending obliquely below and extending at a predetermined angle with respect to the surfaces of the cut portions 70Ra, 70La extend to the left and right of the cut portions 70Ra, 70La. Further, at the end of each of the arms 70Rb and 70Lb, a cutout 70R
a, 70Rc extending substantially parallel to 70La,
It has 70Lc. The two mounting portions 70Rc and 70Lc are pivotally supported by pivot portions 69a provided on the cutter base 69, respectively. Therefore, the cutter members 70R and 70L are in an upright state substantially perpendicular to the cutter base 69, as shown by arrows in FIG.
It can be displaced into a tilted state substantially parallel to the cutter base 69. When it is in the upright state, the tearing portions 70Ra and 70La are joined, and the cutter is in an operating state in which the flexible container is torn.
Further, when the cutter 70 is in the inclined state, the height of the cutter 70 is reduced, and the cutter 70 is stored.

Even when the storage container 31 is in the stored state, the bellows portion 63 still has the height dimension indicated by H in FIG. Therefore, the hopper stirring means 6 is provided in the storage container 31.
The stirrer rod 65b of the cutter unit 5 is made of a thin plate, and the cutter 70 of the cutter unit 68 is inclined so that the stirrer 63 can be accommodated within the height H of the bellows 63. Therefore, the height of the storage container 31 in the storage state does not increase particularly by the members provided in the storage container 31.

In order to hold the storage container 31 fixedly at two positions, that is, the storage state shown in FIG. 8 and the storage state shown in FIG. As is clear from FIG. 5, the mounting plates 61c are provided so as to extend laterally at four positions at approximately 90 ° intervals, and a support rod 72 is vertically provided on each of the mounting plates 61c. Further, four guide cylinders 73 having an inner diameter slightly larger than the outer diameter of the support rod 72 are erected on the main body frame 2, and a base plate 74 is provided at an upper end portion of the guide cylinder 73. The lower plate portion 60 of the storage container 31 is
4, and each support rod 72 is slidably inserted into a guide cylinder 73. Thus, the guide cylinder 73 and the support rod 72 are fitted in a telescope shape. The support rod 72 is provided with two upper and lower pin insertion holes 72a and 72b, and the guide cylinder 73 is provided with only one pin insertion hole (not shown) at a predetermined position. When the stopper pin 75 is inserted by aligning the pin insertion hole 72a below the support rod 72 with the pin insertion hole of the guide cylinder 73, the bellows portion 37 is fixed in an extended state in which the soil improving material is stored, and the upper pin Insertion hole 7
When the stopper pin 75 is inserted by aligning 2b with the pin insertion hole of the guide cylinder 73, the bellows portion 62 is fixed in the retracted state. In addition, in the storage state and the storage state of the soil improvement material, it is extremely stable and does not cause any misalignment.

Since the soil improving material hopper 30 is located at a high place, the lid 67 provided on the top plate 61 is opened, the flexible container is suspended, and the storage container 31 is removed from the lid 67. Inserted inside, the cutter 68 is used to fill the soil improvement material by cutting off the lower end. For this purpose, a crane 80 (see FIG. 2) is attached to the main body frame 2.
Is rotatably attached to the turning portion 81. As shown in FIG. 17, the crane 80 includes an arm 84 that can be vertically rotated by a cylinder 83 at an upper end of a post 82 erected on a revolving portion 81, and a wire support member 85 is attached to a tip of the arm 84. It is composed of those provided in connection.
The arm 84 expands and contracts like a telescope, so that the wire support member 85 can expand and contract. The distal end of a wire 86 is fixed to the wire support member 85, and a hook 87 is attached to the wire 86.
Are engaged, and the wire 86 is connected to the wire support member 8.
5 and wound around a winding device (not shown). The engagement between the wire support member 85 and the hook 87 with the wire 86 is performed by, for example, a pulley. Therefore, the hook 87 moves in the vertical direction by driving the winding device to unwind or wind the wire 86.

As described above, the crane 80 is provided on the main body frame 2 for suspending the flexible container. The storage container 31 in the soil improvement material hopper 30 is moved to the state shown in FIG. It can be used as a lifting drive means for raising and lowering between the storage states shown in FIG. For this purpose, four wire engaging portions 88 are provided on the upper surface of the top plate portion 60, and wires are inserted through the wire engaging portions 88, and the wires are passed through the crane 8
By fixing the hook 87 to the hook 87 and moving the hook 87 up and down, the top plate 60 of the storage container 31 can be moved up and down. As a result, as shown in FIG. 18, the height dimension of the storage section 31 in the soil improvement material hopper 30 can be shortened, and the height dimension can be made substantially the same level as the vibration sieve 21 of the earth and sand hopper 20. It is very convenient to transport by a trailer TR to a site where soil improvement processing is performed.

Meanwhile, it is necessary to inspect the inside of the storage container 31, clean it, and perform maintenance work such as repair. However, except for the lower plate portion 60 and the top plate portion 61, the storage container 31 has a bellows portion 62 that can be extended and contracted, so that the bellows portion 62 cannot be provided with a door or the like. Therefore, in order to perform this maintenance work, an inspection section 90 is provided at a lower position of the bellows section 62, and a top plate separating section 91 is provided at an upper position.

The inspection unit 90 is for inspecting the inside of the storage container 31, and the top plate separation unit 91 is for inspecting the inside of the storage container 3.
1, the top plate 61 is provided to separate the top plate 61 so as to open the inside to clean the inside or to perform repair or the like. The inspection portion 90 and the top plate separating portion 91 are formed of fasteners, and these fasteners are fixed to the flexible sheet 63 at positions between the upper and lower support bones 64, 64. The configuration of the fastener configured as the inspection unit 90 is shown in FIGS. In these figures, 100 is a fastener, and this fastener 100
As is well known, each of the fastener teeth 102 includes a fastener tape 102 provided on one side thereof and a slider 103, and stoppers 1 are provided at both ends of the tooth row 101.
04 is provided, and the slider 103 is for meshing between the opposing tooth rows 101 and for canceling the meshing.

The fastener 100 having the above-described structure opens and closes an opening 63a (opening indicated by a phantom line in FIG. 19) formed between the upper and lower support bones 64 in the flexible sheet 63 constituting the bellows portion 62. Therefore, the flexible sheet 63 is fixed to the inner surface side of the position where the opening 63a is formed by sewing, for example, along a line shown by a dotted line in FIG. Then, as shown in FIG.
The interior can be opened by sliding the slider 103 along the tooth row 101 to disengage the opposing tooth. Further, when the opening 63a is closed, a sealing sheet 105 is attached to prevent the soil improving material from spilling out from a gap between the engagement teeth of the fastener 100 and to prevent intrusion of dust and rainwater from the outside. Have been.
The sealing sheet 105 is in contact with the inner surface of the meshing portion of the engagement tooth row 101, and the upper end is fixed to the flexible sheet 63, but the lower end is free. Thereby, when the fastener 100 is opened, the sealing sheet 10 is opened.
5 can be seen from below.

As for the fasteners constituting the top plate separating section 91, a pair of fastener tapes is formed in an annular shape, the ends thereof are mounted so as to overlap each other, and the stopper is detachable. Shall be. However, since the other configuration is substantially the same as the fastener 100 in the inspection unit 90, illustration and detailed description are omitted. Further, if the airtightness can be enhanced by the engagement between the engagement teeth when the fastener is in the closed state, the sealing sheet 105 is not necessarily provided.

[0041]

According to the present invention, the soil improving material hopper having a large volume can be mounted and installed, and the soil improving material hopper can be stored compactly during transportation. It works.

[Brief description of the drawings]

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

FIG. 2 is a plan view of FIG.

FIG. 3 is an exploded view of a soil improvement mechanism of the self-propelled soil improvement machine of FIG. 1;

FIG. 4 is a plan view of a feeder used as one embodiment of the present invention.

FIG. 5 is a sectional view taken along line AA of FIG. 4;

FIG. 6 is a plan view of a mixing container constituting a mixing means used as one embodiment of the present invention.

FIG. 7 is a sectional view taken along the line BB of FIG. 6;

FIG. 8 is a front view showing a soil improving material hopper used as one embodiment of the present invention in a state where the soil improving material is stored.

FIG. 9 is a front view showing the soil improving material hopper used as one embodiment of the present invention in a retracted state.

FIG. 10 is a longitudinal sectional view of the storage container of FIG.

FIG. 11 is an operation explanatory view of a storage container used as one embodiment of the present invention.

FIG. 12 is a sectional view taken along a line CC in FIG. 8;

FIG. 13 is a plan view of FIG. 8 showing a state where a lid is removed.

FIG. 14 is a plan view of a cutter unit provided inside a storage container used as one embodiment of the present invention.

FIG. 15 is a sectional view taken along the line DD of FIG. 14;

FIG. 16 is a front view of FIG. 14;

FIG. 17 is a configuration explanatory view of a crane used as one embodiment of the present invention.

FIG. 18 is a front view showing a state in which the self-propelled soil improvement machine according to the embodiment of the present invention is loaded on a trailer.

FIG. 19 is a front view of the fastener attached to the storage container of the soil improvement material hopper according to the embodiment of the present invention in a closed state.

FIG. 20 is a front view showing the fastener mounted on the storage container of the soil improvement material hopper according to the embodiment of the present invention in an open state.

FIG. 21 is a sectional view taken along line EE of FIG. 19;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Lower traveling body 2 Main body frame 3 Mixed material supply part 4 Mixing means 5 Improved soil discharge part 10 Mixed material transport conveyor 11 Transport belt 20 Soil hopper 30 Soil quality improvement material hopper 31 Storage tank 32 Feeder 60 Lower plate part 61 Top plate part 60a , 61a Body plate 62 Bellows 63 Flexible sheet 64 Support 67 Cover 68 Cutter unit 69 Cutter base 70 Cutter 71 Chain 72 Support rod 73 Guide tube 74 Base plate 75 Stopper pin 90 Inspection hole 91 Top plate separator 100 Fastener 105 Sealing sheet

 ──────────────────────────────────────────────────の Continued on the front page (72) Inventor Fujio Sato 650 Kandamachi, Tsuchiura-shi, Ibaraki Hitachi Construction Machinery Co., Ltd. (72) Inventor Yoshihiro Hoshino 650 Kandamachi-cho, Tsuchiura-shi, Ibaraki Hitachi Construction Machinery Co., Ltd. (72) Inventor Yasuharu Yamamoto 2-6-2 Otemachi, Chiyoda-ku, Tokyo Inside Hitachi Construction Machinery Co., Ltd. (72) Inventor Tetsushiro Miura 2-5-2, Otemachi, Chiyoda-ku, Tokyo No. F-term in Ritsukukiki Co., Ltd. (reference) 2D040 AB07 CA01 CA03 CD07 EA02 4G037 AA03 EA03

Claims (9)

[Claims] 1. A carry-in conveyor for transporting earth and sand supplied from an earth and sand hopper and an earth improving material supplied from a soil improving material hopper to a main body frame connected to a traveling means, and a mixed material comprising earth and sand and an earth improving material. The soil improvement material hopper is provided with a storage container of the soil improvement material, and a feeder that supplies the soil improvement material from the storage container, wherein the storage container is A lower plate portion on which the feeder is mounted, and an opening for supplying the soil improving material to the feeder, and a top plate portion provided with a supply port for the soil improving material, and a lid for opening and closing the supply port. An elastic bellows portion that connects between the lower plate portion and the top plate portion, wherein the bellows portion has a tubular flexible sheet and a predetermined pitch interval in the vertical direction of the flexible sheet. Take with Made of a digit looped 支骨, self-propelled soil improvement machine, characterized by being configured. 2. A plurality of projecting portions are provided on the top plate portion, supporting rods are vertically provided on each of the projecting portions, and a guide cylinder into which each of the supporting bars is fitted is mounted on the main body frame. Standing up, the bellows portion is extended by projecting these support rods from the guide cylinder, and the soil-improving material storage state in which the internal volume of the storage container is expanded; The height of the top plate portion is reduced by allowing the bellows portion to be fixed to the retracted state in which the bellows portion is reduced.
Self-propelled soil improvement machine as described. 3. A self-supporting device according to claim 2, wherein a support plate is fixedly provided at an upper end portion of said guide cylinder, and said lower plate portion is fixedly held on said support plate. A traveling soil improvement machine. 4. The self-propelled soil improvement machine according to claim 1, wherein a fastener that can be opened and closed is provided at a position between the upper and lower supports. 5. The self-propelled soil improvement machine according to claim 4, wherein the fastener mounting portion is an openable / closable window for inspecting the inside of the storage container. 6. The self-propelled soil improvement machine according to claim 4, wherein the mounting portion of the fastener is for dividing the storage container into two at the position. 7. A sealing sheet for covering a mounting portion of the fastener is mounted on an inner surface side of the flexible sheet, and the sealing sheet is fixed to an inner surface of the flexible sheet at a position higher than the mounting portion of the fastener. 5. The self-propelled soil improvement machine according to claim 4, wherein the lower part is configured to be held in a free state. 8. A cutter having a sharpened tip for cutting off a lower portion of a flexible container filled with a soil improvement material when the flexible container filled with a soil improvement material is placed on the top plate portion, wherein the cutter is a flexible suspension member. The self-propelled soil improvement machine according to claim 1, wherein the self-propelled soil improvement machine is configured to be suspended from a lower surface of the top plate portion. 9. A cutter operating state in which a cut portion thereof faces upward on a cutter base suspended from the top plate portion via the flexible suspending member, and a cutter housing which faces in a substantially horizontal direction. 9. The self-propelled soil improvement machine according to claim 8, wherein the self-propelled soil improvement machine is configured to be mounted so as to be able to be tilted between the state.