JP2001152485A - Self-propelled soil conditioning machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the height of a soil conditioning machine during the transportation of the machine without impairing a function as a soil supply means. SOLUTION: A soil supply means 20 provided in the body frame 2 is constituted of a soil storage frame 21, a sieve-attached frame 22, a soil feed frame 23, in this order from the lower side. The soil feed frame 23 is constituted of right and left side plates 37, 37 outwardly slanted, viewed from the sieve- attached frame 22 and a slanting end plate 38 positioned at the upstream of the transfer direction of a transfer conveyor 10. Slanting side plates 37, 37 and the slanting end plate 38 are detachably connected to each other, and an arm 40 composed of a pair of forward and backward components are connected at the outside face of the right and left slanting side plates 37, and the arm 40 is rotatably connected to a bush 41 provided in a second support member 17a provided on a support member 17 by a pin 42, and by tilting outwardly the slanting side plate 37, the height of the soil supply means 20 during its transportation 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. The present invention relates to a self-propelled soil improvement machine that performs soil improvement while traveling appropriately.

[0002]

2. Description of the Related Art For example, in burying gas pipes, water and sewage works, other road works, foundation works, etc., it is desirable to backfill excavated soil, but since generated soil is not suitable for backfilling. Then, the excavated soil is carried out and new high quality soil is carried in to fill the excavated area. For example, if the soil itself is soft, such as clayey soil with extremely small particle size and high viscosity, or soil that is too hard to solidify due to excessive weathering, land subsidence occurs Etc. may occur. However, since the poor soil generated by excavation at a construction site is a kind of industrial waste, its disposal place is restricted. Therefore,
There is a strong need to convert poor soils into reusable resources. In this way, in order to make it possible to reuse soft soil and the like that may cause land subsidence when the soil generated by excavation is backfilled, for example, soil that mainly contains lime or cement The improver is mixed with earth and sand and solidified. As a result, it is possible to convert the soil into high-quality soil that is suitably used for backfilling an excavated site.

[0003] The soil improvement treatment for solidifying the soil is performed by mixing the soil and the soil improvement material. A typical mixing method of the soil and the soil improvement material is a mixing method using a stirring means. And a crushing method provided with a rotary striker are conventionally known. The mixing method is
A stirring means is provided in the tank, and the earth and sand and the soil improving material are charged into the tank and uniformly stirred and mixed by the stirring means. The stirrer performs a batch type process that only performs the function of stirring and mixing the inside of the tank, and a screw-type stirrer is provided to stir and mix the soil and soil improvement material in a predetermined direction. In some cases, a continuous process is performed in which the soil and soil improvement material are continuously supplied and the generated improved soil is continuously discharged. A crushing type soil improvement machine as another method of soil improvement processing is disclosed in, for example, JP-A-9-195265. This crushing type soil improvement machine is provided with a crushing machine consisting of a rotary hitter, and the earth and sand and the soil improvement material are dropped from the upper position toward the rotary hitter, and the rotary hitter is rotated in the meantime. By doing so, the soil and the soil improvement material are hit and broken.

[0004] Stationary and self-propelled machines have been put into practical use as machines for improving soil quality as described above. The self-propelled soil improvement machine can easily perform soil improvement at or near a place where soil is generated, or at or near a place where the improved soil is consumed, and conveys soil and soil improvement material with a dump truck or the like. This is advantageous from the viewpoint of the production cost of the improved soil and the prevention of the occurrence of traffic obstacles, as compared with the stationary soil improvement plant that must be performed.

[0005] The traveling means in the self-propelled soil improvement may be a wheel type, but from the viewpoint of running stability, especially in a place with poor scaffolding, a crawler type traveling means is used. It is common. Then, a main body frame is connected to and provided on the traveling means, and all the devices and members required for soil improvement are installed on the main body frame. As equipment necessary for soil improvement, there is firstly a mixing means for mixing earth and sand and a soil improvement material, and a means for supplying earth and sand and a soil improvement material to the mixing means is provided. Further, it is desirable to provide a configuration that also includes a unit for transporting the improved soil generated by the mixing unit.

Here, the mixing method of the earth and sand and the soil improvement material by the mixing means includes a mixing method and a crushing method as described above. Must continuously supply earth and sand and soil improvement materials from above. Further, the earth and sand and the soil improvement material can be separately supplied to the mixing means, but from the viewpoint of simplification of the supply mechanism and downsizing, the simultaneous supply method is desirable. For this purpose, a conveyor means for transporting the earth and sand and the soil improvement material is provided, and the earth and sand supply means and the soil improvement material supply means are arranged at an intermediate position of the conveyor means and above the conveyor means. Therefore, in the self-propelled soil improvement machine, in the main body frame provided on the traveling means, the conveyor means is disposed at a position higher than the mixing means, and the earth and sand supply means and the soil improvement material supply means are located higher than the conveyor means. Will be placed in

[0007] As a soil improvement material, for example, when solidifying earth and sand, a material mainly composed of lime or cement is used. However, when soil improvement is continuously performed, a storage tank having a predetermined capacity is required. And a feeder for supplying the soil improving material from the storage tank by a predetermined amount substantially continuously. On the other hand, the supply of earth and sand can be performed by a conveyor or the like, but it is preferable to directly supply the earth and sand by a bucket or the like of a hydraulic shovel. For this purpose, the earth and sand supply means includes an earth and sand storage unit for storing a predetermined amount of earth and sand, and the earth and sand intermittently input by a hydraulic shovel or the like is continuously supplied to the conveyor means by a predetermined amount.

In order to efficiently improve the soil quality for a long period of time and to produce a high-quality improved soil in which the mixing ratio of soil and soil improving material is accurately constant, the processing capacity of the mixing means is required. To increase. In addition, it is necessary to use as large a storage capacity as possible for the sediment storage unit and the storage tank that constitute the soil improvement material supply unit that constitute the earth and sand supply unit. If the volume of the storage tank constituting the soil improving material supply means is small, the soil improving material must be replenished frequently, and the soil improving process must be interrupted during the replenishment.
In addition, if the volume of the sediment storage part of the sediment supply means is large, if a large amount of sediment is supplied at once, for example, there will be time allowance for inspection of soil improvement machines and the like. It is advantageous.

[0009]

As described above, the reason why the soil improvement machine is self-propelled is that the soil improvement machine is transported to a work site where the soil improvement is performed so that the machine can be appropriately moved in the work site. is there. When the traveling means is constituted by a wheel type, the traveling means can be carried to the work site by self-propelled as it is. However, in the case of using a crawler type traveling means, the general road cannot be run on its own, so this soil improvement machine is transported by being mounted on a trailer. On a general road, the height of the entire soil improvement machine must be reduced because the vehicle height during transportation is restricted.

As described above, the earth and sand supply means and the soil improvement material supply means are arranged at the highest position of the soil improvement machine, and constitute the earth and sand supply means in order to perform the soil improvement processing more efficiently. Large storage tanks constituting the soil storage section and the soil quality improving material supply means are also used. However, when the soil improvement machine is transported, the earth and sand supply means and the soil improvement material supply means do not contain the earth and sand or the soil improvement material. Therefore, for example, if the storage tank constituting the soil improvement material supply means is configured to be expandable and contractible in the height direction, the height dimension during transportation can be reduced. However, the earth and sand storage part of the earth and sand supply means cannot be configured to be able to expand and contract in the vertical direction. The reason for this is that the sediment reservoir is located directly above the conveyor means, so that when the conveyor means is activated, the sediment will be pressed against the side of the sediment reservoir,
This is because the strength of the side must be increased. Also, when earth and sand are directly injected by a hydraulic excavator or the like, the injected earth and sand may contain solid foreign matters such as rocks, concrete pieces, and even metals. And sieved the soil and solid foreign matter. When the vibrating screen is installed on the sediment storage,
It is necessary to prevent the strength of the sediment storage section from decreasing.
Therefore, in order to suppress the height dimension of the earth and sand supply means, the volume itself of the earth and sand storage unit must be restricted, and the storage capacity of the earth and sand decreases.

The present invention has been made in view of the above points, and an object of the present invention is to make it possible to reduce the height of a soil improvement machine during transportation without impairing the function as earth and sand supply means. Is to do so.

[0012]

SUMMARY OF THE INVENTION In order to achieve the above-mentioned object, the present invention provides a mixing means for mixing earth and sand with a soil improving material, which is installed on a main body frame connected to a traveling means, and the mixing means. A conveyor for supplying earth and sand and soil improvement material from the upper part of the means, earth and sand supply means for feeding on the conveyor, a storage tank and a feeder, for supplying the soil improvement material on the conveyor. Self-propelled soil improvement machine provided with a soil improvement material supply means, wherein the soil and sand supply means is provided at least in a frame-shaped soil and sand storage part installed on the conveyor, and provided above the soil and sand storage part. And a sediment input part for inputting sediment. The sediment input part is provided with side wall parts located on both left and right sides with respect to the traveling direction of the conveyor, and an end located on the upstream side. Is composed of a part, the support member is provided on both left and right sides of the conveyor of the main body frame,
The left and right side walls are connected to these two support members so as to be tiltable outward, and the end wall is configured so that both ends thereof are detachably connected to the side walls. It is assumed that.

Here, as a specific structure for tilting each side wall portion, for example, a rotating arm is connected to each side wall portion, and the other end of the rotating arm can be rotated by a support member. And a stopper that locks the rotating arm at a position where it is substantially horizontal. Further, the connecting position of the rotating arm to both side walls is when the rotating arm is displaced to a substantially horizontal state.
It is desirable that these side walls can be located within the vehicle width. On the other hand, it is more desirable that the end plate be provided with a locking portion that can be hung by a crane and that can be locked to the outer surface of the earth and sand storage frame or the like. In addition, if a sieve for separating sediment and solid foreign matter is provided above the sediment storage frame, solid foreign matter mixed in the injected earth and sand can be reliably removed.

[0014]

Embodiments of the present invention will be described below with reference to the drawings. 1 and 2 show the overall configuration of the self-propelled soil improvement machine. First, in FIG. 1, reference numeral 1 denotes a lower traveling body, and the lower traveling body 1 is provided with crawler-type means having a crawler belt 1a. Although the illustrated lower traveling body 1 is a crawler-type traveling means, taking into consideration the case where earth and sand are intermittently introduced, it is necessary to prevent the entire vehicle body from becoming unstable due to an impact load at the time of earth and sand introduction. This is to prevent it. Therefore, in the case where the earth and sand are continuously charged by a conveyor or the like, it may be configured by a wheel-type traveling body.

The lower traveling body 1 is provided with a body frame 2 constituting a chassis connected thereto.
Are provided with various mechanisms and devices. In the main body frame 2, when the left side in FIG. 2 is set to the front of the machine, a material supply unit 3 is disposed at a front position. A processing mechanism unit 4 is mounted on the rear side, and an improved soil discharging unit 5 is further provided rearward from the processing mechanism unit 4. The improved soil discharge section 5 extends obliquely upward from a position below the processing mechanism section 4, and a machine room in which machines such as an engine, a hydraulic pump, and a direction switching valve unit are built in an upper position of the processing mechanism section 4. 6 are provided.

The material supply unit 3 is for supplying a material comprising soil and soil improvement material for soil improvement, and controls a mixing ratio between the supplied soil and soil improvement material. It has become. For this purpose, a carry-in conveyor 10 is provided, and the earth and sand supply means 2 is provided at the most upstream side, that is, the front side of the machine in the carrying direction of the carry-in conveyor 10.
0, a soil improving material supply means 50 is installed on the rear side.

As is apparent from FIG. 3, the carry-in conveyor 10 is provided so as to be inclined so as to rise from the end of the main body frame 2 by a predetermined angle. The carry-in conveyor 10 has a conveyor belt 11, and the conveyor belt 11
The driven wheel 14 is provided between the driven wheel 13 and the driven wheel 14 supported by the drive wheel 2. A well-known tension adjusting mechanism is provided on the driven wheel 14 side. In order to support the transport surface of the transport belt 11, guide rollers 15 are provided below the transport surface at predetermined pitch intervals. Further, on both left and right sides of the transport surface of the transport belt 11,
Regulation plates 16, 16 are provided at positions upstream of the mounting portion of the earth and sand supply means 20, and the regulation plates 16 determine the height of conveyance by the conveyance belt 11, and thereby, the amount of earth and sand conveyed Can be controlled. The transport conveyor 10 is provided in such a state that the downstream side thereof is low, and the conveyor 10 rises obliquely upward toward the upstream side.

A support member 17 is provided at both left and right sides of the main body frame 2. The support member 17 has a rising portion provided in the front and rear, and a bridging portion connected between both rising portions. The earth and sand supply means 20 is attached to the support member 17. Earth and sand supply means 20
As shown in FIG. 4, is composed of three members, that is, a sediment storage frame 21, a sieve mounting frame 22, and a sediment loading frame 23 in order from the lower side.

The earth and sand storage frame 21 constituting the lowermost end is fixedly connected to the support member 17, and its upper and lower ends are open. The left and right sides of the lower end opening of the sediment storage frame 21 substantially match the width dimension of the conveyor belt 11 of the carry-in conveyor 10, so that the sediment storage frame 21 is moved in the conveying direction of the conveyor belt 11. It surrounds only a predetermined length. Further, a supply port 21a for allowing earth and sand to pass therethrough is opened at a position in the earth and sand storage frame 21 on the upstream side in the conveyance direction of the conveyor belt 11. Therefore, the earth and sand supply means 20 continuously supplies an amount of earth and sand defined by the opening area of the supply port 21 a and the transport speed of the carry-in conveyor 10. The supply port 21a may be provided with a gate having a variable opening area, or may be provided with a pressure roller or the like for keeping the bulk density of earth and sand transferred on the conveyor belt 11 constant.

The sieve mounting frame 22 has a sieve 24 at its upper end.
Are attached, and constitute a vibrating sieve to which vibration is applied by vibrating means. In this way, by vibrating the sieve 24, when solids such as rocks, concrete, and metal are contained in the introduced earth and sand, these solids are separated from the earth and sand, and only the earth and sand is sieved.
4 and is sent to the sediment storage frame 21. In addition, since the earth and sand passes through the sieve 24, the bulk density of the earth and sand is reduced, and sufficient air is contained in the earth and sand. As a result, the earth and sand is smoothly transported by the carry-in conveyor 10 with a light load. It can also be done.

Thus, the entire sieve mounting frame 22 vibrates substantially vertically. For this purpose, the sieve mounting frame 22 is independent of the sediment storage frame 21 and the support member 17
It is mounted to be able to vibrate. That is, as shown in FIG. 5 and FIG. 6, the spring receivers 26 are provided at two places in the front and rear on each of the left and right sides of the sieve mounting frame 22, that is, four places in total. The spring receiver 26 and the support member 1
A spring 28 is mounted between the spring seat 27 and the spring seat 27. Thereby, the sieve mounting frame 22 is attached to the support member 1.
7 is supported by a spring 28 so as to be vertically movable. Further, a vibration means 29 is connected to the sieve mounting frame 22. The vibrating means 29 has rotating drums 31a and 31b connected to both ends of a rotating shaft 30 provided to penetrate the sieve mounting frame 22.
The position of the center of gravity of 1b is eccentric from the center. Therefore, when the rotary drums 31a and 31b are driven to rotate, the positions of the centers of gravity of the rotary drums 31a and 31b change, and the sieve mounting frame 22 supported by the spring 28 vibrates so as to pivot vertically. Become.

On one rotating drum 31a, a rotating force transmitting means 32 formed of a belt or a chain is wound and provided, and is also wound on a pulley 33a provided on an output shaft of a motor 33 as a rotating driving means. . The motor 33 is supported by the support member 17 together with the spring seat 27. The other rotating drum 31b and the supporting member 17
A torque transmitting means 35 is wound around and provided with a pulley 34 mounted on the pulley 34, but no driving means is connected to the pulley 34. Therefore, driving the motor 33 causes the screen 22 to vibrate substantially vertically.

Here, the sieve mounting frame 22 is a sediment storage frame 21.
However, in order to prevent the movement of the sieve mounting frame 22 from being transmitted to the sediment storage frame 21 when the sieve mounting frame 22 is vibrated, at least a sieve mounting is provided between the upper and lower frames 21 and 22. A gap corresponding to the vibration stroke of the frame 22 is formed. Moreover, the sieve 24 in the sieve mounting frame 22
The portion below the position where is provided constitutes an area for storing the earth and sand together with the earth and sand storage frame 21. And sediment storage frame 2
An upper end of a rubber sheet 36 is attached to the inner surface side of the sieve attachment frame 22 in order to close a gap between the frame 1 and the sieve attachment frame 22 and prevent sediment stored therein. The sheet 36 is moved from the sieve mounting frame 22 to the sediment storage frame 2.
1, it preferably extends to a position where it comes into contact with the conveyor belt 11 of the carry-in conveyor 10.

7 to 9 show the construction of the earth and sand input frame 23. FIG. The earth and sand input frame 23 is arranged at an upper position of the sieve mounting frame 22. The earth and sand loading frame 23 has a wide open upper end to facilitate the earth and sand injection using a hydraulic shovel or the like. Therefore, the earth and sand input frame 23 is composed of left and right inclined side plates 37, 37, each of which inclines outward as viewed from the sieve mounting frame 22, and an inclined end plate 38 located on the downstream side in the transport direction of the transport conveyor 10. You. However, no end plate is provided at a position on the upstream side in the transport direction of the transport conveyor 10. The reason is that the solid foreign matter that has been separated and left on the sieve 24 is
This is to remove the sieve 24 so as to fall down along the inclination thereof.

The left and right inclined side plates 37, 37 and the inclined end plate 38
Are detachably connected to each other to form the earth and sand input frame 23 having a substantially U-shaped frame. For this,
The joint of the inclined side plate 37 to the inclined end plate 38 is substantially 90 °.
It is bent to form a bent portion 37a.
a and the both end portions of the inclined end plate 38 are connected and fixed by fastening means 39 such as a bolt. The earth and sand input frame 23 assembled in this way is for widening the earth input area in order to easily input the earth and sand using a hydraulic shovel or the like. Therefore, the earth and sand is naturally also injected into the upper part of the inclined side plate 37 and the inclined end plate 38. And the earth and sand thrown in on these must fall on the sieve 24 of the sieve mounting frame 22 smoothly along their inclined surfaces. For this reason, the inclination angles of the inclined side plate 37 and the inclined end plate 38 cannot be made too large (a state close to horizontal). Therefore, it is inevitable that it protrudes upward to some extent.

On the outer surfaces of the left and right inclined side plates 37 constituting the earth and sand input frame 23, a pair of front and rear arms 4 is provided.
0 is provided in connection. These arms 40
The bush 41 provided on the second support member 17 a provided on the support member 17 is rotatably connected to the bush 41 by a pin 42. As a result, the inclined end plate 38 is separated and the pins 42 are separated.
When the arm 40 is rotated about the
Will lean outward. When the inclined side plate 37 is tilted outward, the arm 4 and the second support member 17a are provided with through holes through which pins and the like can be inserted in order to fix the inclined side plate 37 at a predetermined angle. Plates 43a, 43b
The inclined side plate 37 can be fixed by inserting a pin in a state where the connecting plates 43a and 43b overlap each other. On the other hand, when the inclined end plate 38 is separated from the inclined side plate 37, the inclined end plate 38 is held in a state of being suspended from the sieve mounting frame 22. For this purpose, the upper end of the inclined end plate 38 is located at a position separated by a predetermined distance.
At the location, a locking portion 44 for locking the hook is provided in connection. Two hooks 45 are provided on the end surface of the sieve mounting frame 22 so as to have a positional relationship corresponding to the locking portion 44 of the inclined end plate 38.

Accordingly, the earth and sand input frame 23 is not
In the assembled state shown by the solid line, the area for charging earth and sand is widened, and the operation for charging earth and sand performed by a hydraulic shovel or the like becomes easy. On the other hand, this earth and sand input frame 23 is disassembled,
The inclined end plate 38 is stored so as to be supported by the sieve mounting frame 22, and the inclined side plate 37 is tilted to connect the connecting plate 43.
When the pin is fixed by inserting a pin between a and 43b, as shown by a virtual line in FIG. 9, the height of the earth and sand supply means 20 as a whole can be reduced by H. Although the inclined side plate 37 is inclined outward, as shown by a virtual line in FIG. 8, in the inclined state, the inclined side plate 37 does not protrude from the vehicle width B of the soil improvement machine including both ends of the crawler belt 1a. . Therefore, even if the earth and sand input frame 23 is disassembled, each member constituting the earth and sand input frame 23 can be stored within the range of the vehicle width. The storage location of the inclined end plate 38 may be not only the sieve mounting frame 22 described above, but also a desired space created between each part constituting the earth and sand supply means 20 and another mechanism part.

Next, in the conveying direction of the carry-in conveyor 10, the soil improving material supplying means 50 disposed at a position upstream of the disposing position of the earth and sand supplying means 20, as shown in FIGS. It is supported by a frame-shaped base plate 52 provided on four (or three) columns 51 erected on the main body frame 2. Therefore, the carry-in conveyor 10 includes the supporting columns 51 and 5.
A predetermined amount of the soil improving material is added to the earth and sand supplied from the earth and sand supply means 20 on the carry-in conveyor 10. Here, the soil improvement material is used to improve or improve the soil quality.
It is mixed with earth and sand, and the one according to 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, when the ground is to be reformed or the acid soil is to be reformed, an appropriate soil improvement material is supplied.

The soil improving material supply means 50 includes a storage tank 53 for storing a predetermined amount of the soil improving material,
3 and a feeder 54 for supplying a soil improving material by a predetermined amount at a time. The storage tank 53 has a substantially cylindrical shape, has a space for storing the soil improving material therein, and has a variable height dimension. Therefore, the lower side of the storage tank 53 is the base plate 52.
It comprises a base portion 55 installed on the top and having an open upper end, a top plate portion 56, and a bellows portion 57 provided between the base portion 55 and the top plate portion 56. The base portion 55 and the top plate portion 56 are formed of a hard member such as a steel plate, and the bellows portion 57 is capable of extending and contracting in the vertical direction.
Is extended, the operation state shown in FIG. 10 is established, and a large amount of soil improvement material can be stored inside. FIG. 12 shows the storage state of the bellows portion 57. When the storage state is set in this manner, the height of the soil improvement machine is reduced as described later. Therefore, the bellows portion 57 functions as a height adjusting unit of the soil improving material supplying unit 50.

A substantially circular opening 56a is formed in the center of the top plate 56, and an opening / closing lid 58 is provided above the opening 56a. At least three hook locking members 59 are provided at positions outside the lid 58.
It is provided in places. A cutter 60 is provided below a portion of the top plate 56 where the opening / closing lid 58 is provided. Here, the soil improvement material is filled in the flexible container, and the soil improvement material is directly supplied from the flexible container to the storage tank 53, and the cutter 60 is for cutting the lower end of the flexible container. is there. The soil improvement material surely flows into the storage tank 53 from the flexible container cut by the cutter 60,
In order not to spill or scatter around,
The cutter 60 is provided at a position where the cutter 60 has entered a predetermined depth from the top plate 56.

The bellows portion 57 of the soil improving material supply means 50 can be selectively fixed to the extended operation state of FIG. 10 and the storage state of FIG. To this end, mounting plates 56b are provided on the top plate portion 56 so as to extend laterally at three locations at approximately 120 ° intervals, and a support rod 61 is vertically attached to each of the mounting plates 56b. ing. A guide cylinder 62 is provided on the base plate 52 at a position corresponding to the vertical position of each of the support rods 61. The support rods 61 are slidably inserted into the guide cylinders 62, respectively. I have. As a result, the guide cylinder 62 and the support rod 61 are fitted in a telescope shape, and the support rod 61 can penetrate the guide cylinder 62 and protrude downward.

The support rod 61 is provided with pin insertion holes 61a and 61b at two locations on the upper and lower sides.
A pin insertion hole (not shown) is formed at a predetermined position at one position. When the stopper pin 63 is inserted with the pin insertion hole 61a below the support rod 61 aligned with the pin insertion hole of the guide cylinder 62, the bellows 57 is held in the extended operating state. On the other hand, the support rod 6
When the stopper pin 63 is inserted by aligning the pin insertion hole 61b above the pin 1 with the pin insertion hole of the guide cylinder 62, the bellows 57 is held in the retracted state.

In the soil improving material supply means 50 constructed as described above, the storage tank 53 is filled with the soil improving material from a flexible container. However, since the soil improving material supplying means 50 is located at a high place. As shown in FIG. 13, the work of filling the soil improvement material is performed in a state where the flexible container is suspended using the crane 64. The crane 64 is provided by pivotally supporting a base end of an arm 64b that expands and contracts in a telescopic manner on a support portion 64a that is rotatably provided on the main body frame 2. Make up. A wire 66 connected to the hook 65 is connected to the tip of the arm 64b. The hook 65 can be moved up and down by winding up or pulling down the wire 66.

The end of the carry-in conveyor 10 constitutes a processing mechanism section 4 and is connected to a processing tank 70 as a mixing means for stirring and mixing earth and sand with the soil improving material. The processing tank 70 is formed of a rectangular container arranged in the longitudinal direction of the main body frame 2, that is, in a substantially horizontal direction. As is apparent from FIG. 3, an inlet 72 forming an inlet is provided at an upper part on the front side of the processing tank 70, and an outlet 73 forming a discharge part is provided at a lower part on the rear side. The other parts are sealed. An even number of paddle mixers 74 are provided in the processing tank 70 in parallel. The paddle mixer 74 has a rotating shaft 75, on which a large number of paddles 76, which are intermittently provided blades as stirring / transferring members, are planted at a predetermined angle (for example, every 90 °). By rotating the rotating shaft 75, the rotating shaft 75 is driven to rotate and stir the inside of the processing tank 70, and the earth and sand and the soil improvement material guided into the processing tank 70 are stirred and uniform. Is transferred toward the discharge port 73 side. Then, the improved soil generated in the processing tank 70 is discharged from the discharge port 73 to the improved soil discharge section 5 by the action of its own weight. Here, the improved soil discharging section 5 has a carry-out conveyor 80.

FIG. 14 shows a state in which soil improvement processing is being performed using a soil improvement machine. As shown in the figure, a soil improvement machine is placed in a small yard to improve the soil quality of the sediment deposited in this yard in advance.
A means for charging earth and sand into the earth and sand supply means 20 is required.
For example, a hydraulic excavator PS
Is preferably used.

Therefore, in order to improve the soil quality in the yard,
Sediment deposited with a predetermined spread is picked up in order from the end by a bucket B of a hydraulic shovel PS, and is fed into a soil supply means 20 of a soil improvement machine. While the earth and sand is conveyed from the earth and sand supply means 20 by the carry-in conveyor 10, the soil improvement material is supplied from the soil improvement material supply means 50 and supplied onto the surface of the earth and sand. Then, a mixture of the earth and sand and the soil improvement material is fed into the processing tank 70 from the end of the carry-in conveyor 10 through the inlet 72, and the processing tank 70
Is moved to the position of the discharge port 73 while the earth and sand and the soil improvement material are stirred and mixed by the action of the paddle mixer 74 provided in the above. Then, the improved soil in the aggregate state is produced by uniformly mixing the earth and sand with the soil improving material in the treatment tank 70. This improved soil is deposited at a predetermined position from a discharge port 73 via a discharge conveyor 80.

When earth and sand are taken into the soil improvement machine from the accumulation part, a space is created at that part. By accumulating the sequentially produced improved soil in this space, most of the space in the yard can be substantially used as both a sediment accumulation site and an improved soil accumulation site, and the yard space is effectively used. Can be used. It is for this reason that the soil improvement machine is allowed to run on its own by the undercarriage 1, and as the work progresses, the undercarriage 1 is actuated and the soil improvement machine is moved as the sedimentation site recedes. Let it do.

As described above, when the produced improved soil is deposited at a predetermined position by the discharge conveyor 71, the soil may be deposited at the location where the soil has been removed from the location where the soil has been accumulated. However, since the improved soil has an aggregated shape, it may be desirable to classify the soil according to the particle size. 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. The sieve 82 has a mesh size that allows passage of a particle having a predetermined particle size, for example, 13 mm or less, 20 mm or less, or 25 mm or less, and is desirably constituted by a vibrating sieve. After passing through the sieve 82, 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 the solidification treatment has been performed,
The improved soil having a large particle size is used as it is or after being subjected to a process for equalizing the particle size, as a material for backfilling or the like.

The soil improvement machine is shared by a plurality of yards, so that a relatively small amount of earth and sand is soil-improved in a certain yard, and then the soil improvement machine is transported to another yard, and a similar soil is improved in this yard. Perform improvement processing. For this purpose, as shown in FIG. 15, it is placed on the carrier TR of the trailer TT and transported. When transported by the trailer TT, the length and width dimensions are also restricted to some extent, but the most important dimension is the height dimension. If this height is not kept as low as possible, it will not be possible to pass under guards or overpasses, so that the transport route will be severely restricted. When transporting with the trailer TT, it is conceivable to disassemble a part of the machine. However, this requires disassembly and assembly every time the machine is carried in and out of the yard, which makes the operation extremely troublesome.

As apparent from FIG. 2, the highest position of the soil improvement machine is the soil improvement material supply means 50. The soil improving material supply means 50 is provided with a bellows portion 57 as a height adjusting portion in the storage tank 53. Therefore, when performing soil improvement in the yard, the bellows portion 57 is provided.
In the extended operating state of FIG. 10 to increase the internal volume. Further, during transportation, the height dimension can be reduced in the storage state of FIG. This operation is shown in FIG.
As is apparent from FIG. 3, the suspension wire 84 is connected to the hook locking tool 59 provided on the top plate portion 56, and the suspension wire 84 is hooked on the hook 65 of the crane 64 to raise and lower the wire 66. This can be easily performed. When the top plate 56 is at a predetermined height position, the top plate 56 is fixed at that position by inserting the stopper pin 63 between the support rod 61 and the guide cylinder 62.

When the height of the soil improving material supply means 50 is reduced in this way, the earth and sand supply means 20 is at the highest position. The earth and sand supply means 20 is lowered to a position at least equal to or lower than the height position of the soil conditioner supply means 50. When the soil improving material supply means 50 is reduced, the earth and sand supply means 20 protrudes from a portion of the earth and sand input frame 23. Then, the earth and sand input frame 23 is disassembled. First, the inclined side plate 37 and the inclined end plate 38 constituting the earth and sand input frame 23 are separated. Inclined side plate 3
The two inclined side plates 37 and the inclined end plate 38 are separated by attaching and detaching the fastening means 39 connecting the 7 and the inclined end plate 38. Since the inclined side plate 37 is supported by the second support member 17a via the arm 40 and the bush 41, even if the inclined end plate 38 is separated, it does not fall completely. However, since the inclined end plate 38 is completely in a free state, the hook 65 of the crane 64 must be
When the earth and sand input frame 23 is disassembled, the inclined end plate 38 can be held in a state where it does not fall off. The inclined end plate 38 is a plate having a relatively short width and is not so heavy, so that the operator can hold it by hand.

The inclined end plate 38 is held by engaging its locking portion 44 with a hook 45 of the sieve mounting frame 22. On the other hand, the inclined side plates 37 on both sides are inclined outward.
This operation can be performed manually smoothly and safely. And
When the inclined side plate 37 is tilted and fixed by inserting a pin between the connecting plates 43a and 43b, the position is stabilized. As a result, the height of the earth and sand supply means 20 is reduced by the dimension indicated by H in FIG. Therefore, when the soil improvement machine is mounted on the trailer TR for transportation, the dimension in the height direction can be reduced as shown in FIG. Also, the inclined side plate 37
Is tilted outward, but the support post 43
Is located inside the vehicle width at the position where the trailer TR is in contact with the vehicle, the trailer TR can be accommodated within the width of the trailer TR. The inclined side plate 37 includes an arm 40 and a support post 43.
Therefore, when it is tilted, it does not move unintentionally even if some vibration or the like acts. When the soil improvement machine is run and loaded on the trailer TR, loaded on the trailer TR, and transported, or unloaded from the trailer TR, the inclined side plate 37 moves randomly, generating a loud vibration sound. It does not cause deformation or damage.

As described above, since the height of the soil supply means 20 and the soil improvement material supply means 50 can be reduced, the storage amount of the soil improvement material in the storage tank 53 of the soil improvement material supply means 50 can be increased. And the soil improvement machine can be operated continuously for a long time.
0 is provided with a wide-mouthed earth and sand charging section 23, which facilitates the earth and sand charging operation performed by using a hydraulic shovel or the like. Moreover, the entire soil improvement machine can be reduced in size and size by an extremely simple operation, and in particular, the dimension in the height direction can be reduced, and the trailer TR can be smoothly transported from yard to yard.

[0044]

As described above, the present invention has various effects such as a reduction in the height of the soil improvement machine during transportation without impairing the function as the earth and sand supply means.

[Brief description of the drawings]

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

FIG. 2 is a front view of FIG.

FIG. 3 is an exploded view showing a structure of each mechanism for performing a soil improvement process in FIG. 2 in an exploded manner.

FIG. 4 is an exploded front view showing the earth and sand supply means in one embodiment of the present invention.

FIG. 5 is a front view showing a sieve mounting frame constituting the earth and sand supply means and its vibrating means in one embodiment of the present invention.

FIG. 6 is a plan view of FIG. 5;

FIG. 7 is a front view of the earth and sand input frame showing one embodiment of the present invention.

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

9 is a sectional view taken along the line AA of FIG. 7 in a state where the inclined end plate is separated.

FIG. 10 is a front view of a soil improvement material hopper according to the embodiment of the present invention.

FIG. 11 is a plan view of FIG. 10;

FIG. 12 is a front view similar to FIG. 10, showing the storage tank of the soil improving material supply means in a stored state.

13 is an operation explanatory view showing an operation of displacing the soil improving material hopper between the operating state shown in FIG. 10 and the retracted state shown in FIG.

FIG. 14 is an operation explanatory view showing a state in which soil improvement is being performed in the yard by the self-propelled soil improvement machine according to the embodiment of the present invention.

FIG. 15 is an external view showing a state in which the self-propelled soil improvement machine according to one embodiment of the present invention is being transported by a trailer.

[Explanation of symbols]

 Reference Signs List 1 lower traveling body 1a crawler belt 2 main body frame 3 supply unit 4 processing mechanism unit 10 carry-in conveyor 11 transport belt 17 support member 20 earth and sand supply means 21 earth and sand storage frame 22 sieve mounting frame 23 earth and sand input frame 24 sieve 29 vibrating means 36 sheet 37 Inclined side plate 38 Inclined end plate 39 Fastening means 40 Arm 41 Bush 42 Pin 43a, 43b Connection plate 44 Locking portion 45 Hook 50 Soil improving material supply means 53 Storage tank 54 Feeder 57 Bellows 64 Crane 70 Processing tank

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Fujio Sato 650, Kunitachicho, Tsuchiura-shi, Ibaraki Pref. Within the Tsuchiura Plant of Hitachi Construction Machinery Co., Ltd. In Hitachi Construction Machinery Co., Ltd. (72) Inventor Tetsushiro Miura 2-6-1 Otemachi, Chiyoda-ku, Tokyo F-term in Hitachi Construction Machinery Co., Ltd. 2D043 CA01 CB00 EA01 EA04 EA06 EA10

Claims (5)

[Claims] 1. A mixing means installed on a main body frame connected to a traveling means for mixing earth and sand with a soil improving material, a conveyor for supplying earth and sand and a soil improving material from above the mixing means, In a self-propelled soil improvement machine comprising a soil supply means for supplying on a conveyor, a storage tank and a feeder, and provided with a soil improvement material supply means for supplying a soil improvement material on the conveyor. The earth and sand supply means comprises at least a frame-shaped earth and sand storage unit installed on the conveyor, and an earth and sand injection unit provided at an upper portion of the earth and sand storage unit for charging earth and sand. The part comprises a side wall part located on both right and left sides with respect to a traveling direction of the transport conveyor, and an end wall part located on the upstream side, and the transport conveyor of the main body frame is provided. Right and left sides to provide a support member, these two support members coupled so as to be tilted toward the side wall portions of the left and right outside and said end wall,
A self-propelled soil improvement machine, wherein both end portions are detachably connected to the side wall portions. 2. A rotating arm is connected to each of the side wall portions, and the other end of the rotating arm is rotatably connected to the support member, and the rotating arm is substantially in a horizontal state. The self-propelled soil improvement machine according to claim 1, wherein the self-propelled soil improvement machine is provided with a stopper which is locked at a position. 3. The connecting position of the rotating arm to the both side walls is such that when the rotating arm is displaced in a substantially horizontal state, these side walls are located within the vehicle width. The self-propelled soil improvement machine according to claim 2, wherein 4. The end plate is provided with a locking portion which can be hung by a crane and which can be locked on an outer surface of the earth and sand storage frame or the like. Self-propelled soil improvement machine. 5. The self-propelled soil improvement machine according to claim 1, wherein a sieve for separating sediment and solid foreign matter is provided above the sediment storage frame.