JP2000129667A - Soil improving machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To supply a treating tank smoothly with soil and sand efficiently by easily removing rocks, etc., being separated by a filter means in a soil-sand charging hopper and remaining on the filter means. SOLUTION: A soil-sand charging hopper 30 comprising a hopper body 31 and a drainboard member 32 is installed to a treating tank 20, and soil and sand are charged by a bucket for a front working mechanism 3. The drainboard member 32 is constituted by connecting rods 34 having circular cross sections so as to be arranged at regular pitches on a frame 33, and the drainboard member 32 is formed in constitution, in which the drainboard member 32 can be displaced between the place of operation, where the upper section of the treating tank 20 is covered, and the place of the removal of residue where solid matters remaining on the upper section of the drainboard member 32 are discharged to the side-section side of the treating tank 20 by inclining the drainboard member 32 at a fixed angle, by a tilt lever 40.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a soil improvement machine used for excavating earth and sand at a civil engineering site or a construction site, improving the soil of the excavated soil, and backfilling the soil.

[0002]

2. Description of the Related Art Conventionally, as a method for improving a soft ground to strengthen the ground, a method of mixing a soil improving material such as cement or lime into a soil constituting the ground and solidifying the same is not known. Known from. In this method, the soil that composes the ground is dug up to a predetermined depth, mixed with cement, lime, and other soil improvement materials for solidifying the soil, backfilled and leveled, and finally compacted. Is a general work procedure. This soil improvement method requires a means for excavating the earth and sand, a means for supplying the soil improvement material, a means for uniformly mixing the excavated soil and the soil improvement material, and a means for leveling and compacting. .

[0003] First, in the soil improvement method, at a minimum,
Requires means to excavate earth and sand. Generally, a hydraulic excavator is used as the excavating means. Here, as a traveling means in the hydraulic excavator, there are a crawler type using a crawler belt and a wheel type having wheels, but generally the ground of such a work site is soft,
Crawler-type crawler-type running means is used because running conditions are poor because of uneven terrain with irregularities, and the necessity of securing the stability of the vehicle body due to digging resistance and other factors. It is desirable to use

[0004] The improved soil is produced by supplying the soil improving material and mixing it uniformly with the earth and sand. The method of generating the improved soil is roughly divided into the soil, the soil improving material, and the treatment vessel. 2. Description of the Related Art A mixing method of mixing and a spraying method of spraying soil improvement material on the ground and then digging and mixing earth and sand are conventionally used. Among these methods, the soil improvement material is evenly mixed with earth and sand,
The mixing method is superior to the spraying method in that the ground can be improved to deep parts.

[0005] As a mixing method, two types are generally known. One of the methods is a method using a mixing tank disclosed in, for example, Japanese Patent Publication No. 1-49538. This device is configured as a self-propelled mixing device including a sediment supply mechanism including a bucket for supplying sedimentary sediment, a mixing tank and a supply unit for soil improvement material, and a wheel-type traveling unit, The earth and sand supply mechanism is rotatable in a horizontal direction by a limited angle on the vehicle body. Further, in this mixing tank, after a certain amount of earth and sand and a certain amount of soil improvement material are charged, the improved soil is generated by stirring and mixing with a stirring means and discharged to a predetermined position.

[0006] In this method, if the earth and sand in the mixing tank and the soil improving material are sufficiently stirred by the stirring means, it is possible to produce a uniformly mixed good quality improved soil. However, the treatment is performed in a batch system, and the supply of the earth and sand and the soil improvement material to the mixing tank and the stirring and mixing thereof are performed in separate steps, so there is a problem in terms of treatment efficiency.

[0007] Another embodiment of the mixing system is a processing apparatus having a crushing system equipped with a rotary hitter as disclosed in Japanese Patent Application Laid-Open No. 9-195265, for example. Some are configured as type machines. In this machine, a lower traveling body having a crawler track is provided on a chassis, and a hopper for charging earth and sand, a hopper for charging soil improvement material, and transporting the soil and soil improvement material supplied from both hoppers are provided on the chassis. The supply unit includes a conveyor belt, a crusher as a processing device, and a carry-out conveyor. The crusher has a rotary hitter, and drops the earth and sand conveyed along the transport belt and the soil improvement material by its own weight, and applies a blow with the rotary hitter in the middle of this fall to thereby remove the earth mass. The crushing is performed finely, and the soil improving material is mixed with the crushed earth and sand.

In this crushing method, since the earth and sand and the soil improving material are not stirred, it is extremely difficult to mix them uniformly. Of course, if the number of hits between the soil and soil improvement material is increased as much as possible, the mixing can be made uniform to some extent.However, in the crusher, the impact is applied while the soil and soil improvement material fall under their own weight. If the number of hits is increased, the height of the crusher increases accordingly.
This type of machine is designed to be transported to the construction site by a trailer or other means of transportation, and the height of the machine must be increased indiscriminately due to height restrictions and other traffic restrictions during road traffic. And the number of hits in the crusher cannot be increased too much. Therefore, although the crushing method is advantageous in terms of processing efficiency as compared with the mixing tank method, it still leaves dissatisfaction with the quality of the produced improved soil.

[0009]

SUMMARY OF THE INVENTION From the above, the applicant of the present invention has provided an apparatus equipped with a mechanism capable of continuously producing improved soil by mixing earth and sand with a soil improving material in a self-propelled traveling vehicle. And filed a patent application as Japanese Patent Application No. 9-146073. In the device of the prior application, an upper revolving unit is installed on a lower traveling unit having a crawler-type traveling unit so as to be revolvable, and excavation means for earth and sand is provided on the upper revolving unit. Mixing earth and sand with soil improvement material on the vehicle side
It is configured to mount a processing unit for stirring. The processing unit is constituted by a paddle mixer or the like, and has a processing tank provided with stirring / mixing means for transferring while stirring / mixing, and this processing tank is provided with an input section for earth and sand and an input section for soil improvement material, Further, a discharge means is provided for discharging the improved soil obtained by mixing the soil and the soil improvement material.

[0010] With this configuration, the earth and sand and the soil improving material can be uniformly stirred and mixed, and a high quality improved soil can be produced. Since the processing can be performed simultaneously and continuously, there is an advantage that the processing efficiency is improved. However, even with the soil improvement machine of the prior application, there is still no problem to be solved.

The paddle mixer is composed of a plurality of paddle mixers, which are called paddles, attached to the outer periphery of a rotating shaft at a predetermined pitch.
An even number of the paddle mixers is mounted, and the paddle mixers are rotationally driven to agitate and mix the earth and sand in the tank with the soil improving material, and transport the mixture in the axial direction of the rotating shaft. And, in order to smoothly mix the earth and sand with the soil improvement material, the interval between the paddles in the adjacent paddle mixers is considerably shortened.

There is a possibility that various solids such as rocks and concrete pieces are mixed in the earth and sand supplied into the processing tank. If the mixed solids are of the order of gravel or gravel, the efficiency of stirring and mixing will not decrease so much if they enter the treatment tank, but if large solids such as rocks enter the treatment tank, they will be placed between adjacent paddles. Biting, damaging the paddle,
In extreme cases, the rotation of the paddle mixer may be locked. For this reason, at the time of putting earth and sand into the treatment tank, at least large solids such as rocks must be removed in advance. By mounting a filter means such as a sandbag on the earth and sand input hopper, solid matter of a certain size or more can be separated from earth and sand in advance. Then, the separated solids will remain on the filter means, but if the residue on the filter means is left as it is, it will be a hindrance to the subsequent charging of earth and sand, and the charging of the earth and sand will be stopped. It cannot be done smoothly.

The present invention has been made in view of the above points, and it is an object of the present invention to easily remove rocks and the like which are separated by a filter means in a soil and sand input hopper and remain thereon. Accordingly, it is an object of the present invention to make it possible to smoothly and efficiently supply soil and sand to a treatment tank.

[0014]

In order to achieve the above-mentioned object, the present invention provides a traveling vehicle having a pair of left and right traveling bodies provided on a lower frame, wherein earth and sand and a soil improving material are put into the traveling vehicle.
A processing tank having stirring / mixing means for transferring the soil and the soil improving material while stirring / mixing the same is provided, and the processing tank is provided with a filter means for separating soil and solid matter. An earth and sand input hopper is installed, and the filter means is provided with an operating position for separating the solid matter from the earth and sand so as to cover the upper part of the processing tank, and is inclined in a diagonally rising direction to remove the residue on the filter means. The structure is such that it can be displaced between the remaining residue removing position.

Here, the filter means can be constituted by a sword member having rods arranged on a mounting member at predetermined pitch intervals. Rods are circular in cross section, triangular,
It may be a rectangular shape such as a quadrangle. Then, the sub-member is connected to the tilting fulcrum member so as to be rotatable in the vertical direction, and the tilting fulcrum member is connected and fixed to one side of the processing tank, so that the sub-member is roughly centered on the tilting fulcrum member. It can be displaced between a horizontal operating position and a residue removal position inclined at a predetermined angle. As a mechanism for displacing the skewer member between the operating position and the residue removing position, for example, a tilting lever is pivotally supported on a side of the processing tank opposite to the side where the tilting fulcrum member is provided. One end of the tilting lever is connected to a push-up portion that moves along the lower surface of the sash member, and the other end is provided with an operating portion that can be pushed downward at the other end, or a processing tank. A horizontal support member is provided on the side opposite to the side on which the tilt fulcrum member is provided to support the sword member in the operating position,
And the operation part projecting sideways from the connection part side of the tilting fulcrum member to the tilting fulcrum member is connected, and this operating part can be pushed downward, and further the tilting fulcrum member of the processing tank is On the side opposite to the side provided with the horizontal support member of the child child member, and a driving means such as a hydraulic cylinder for displacing the child child member to the residue removing position by tilting upward around the tilting fulcrum member. A configuration or the like provided by connection is possible.

[0016]

Embodiments of the present invention will be described below with reference to the drawings. Here, the soil improvement machine shown below is provided with the same excavating means as in a hydraulic shovel, and the traveling means is configured by a crawler-type traveling body similar to a hydraulic shovel, but in short, it is a self-propelled type. The configuration is not limited to the configuration shown in the drawing, as long as the processing tank is a traveling vehicle and the processing tank is detachably attached to the lower frame to which the traveling body is attached.

FIGS. 1 to 4 show the overall construction of the soil improvement machine of the present invention. As is apparent from these figures, a work vehicle is constituted by the lower traveling body 1 and the upper revolving superstructure 2, and a front working mechanism 3 is provided on the upper revolving superstructure 2 as an excavating means. Further, a processing unit 4 is provided on the lower traveling body 1 side, and a driving room 5 and a machine room 6 are further provided on the upper revolving structure 2.
The cab 5 accommodates equipment for driving the machine, such as an engine and a hydraulic pump, and the operator's cab 5 is used to operate the entire machine. Upper revolving superstructure 2
Can be turned with respect to the undercarriage 1 by the turning device 7.

The lower traveling body 1 has crawler-type traveling bodies 10 provided on the left and right, and these traveling bodies 10 are sprockets 1 serving as driving wheels provided at both ends of a track frame 11.
2, an idler 13 as a driven wheel, and a crawler belt 1 provided between the sprocket 12 and the idler 13.
The sprocket 12 is driven by a hydraulic motor. The left and right track frames 11 are connected by a center frame 15, and the track frames 11 and the center frame 15 constitute a lower frame. The turning device 7 is connected to the center frame 15 in the lower frame. Installed. Here, the center frame 15 is formed by bending downward at both ends of a horizontal portion where the turning device 7 is installed, and both ends are connected to the track frame 11. This secures a wide space below the center frame 15.

The front working mechanism 3 constitutes excavating means, and is connected to a boom 16 provided on the frame 2a of the upper revolving unit 2 so as to be capable of raising and lowering, and to the tip of the boom 16 so as to be vertically rotatable. Arm 17 and this arm 1
The boom 16, the arm 17, and the bucket 18 are driven by hydraulic cylinders 16a, 17a, and 18a, respectively, to perform operations such as excavation of earth and sand. An operation means such as an operation lever is provided in the cab 5 in order to excavate earth and sand by the front working mechanism 3. The traveling by driving the crawler belt 14 and the turning operation of the upper turning body 2 by the turning device 7 are also performed by the operation lever and the like in the cab 5.

Next, the configuration of the processing unit 4 provided on the lower traveling body 1 will be described. First, FIGS. 5 and 6 show a schematic configuration of the entire processing unit 4. As is clear from these figures, the processing unit 4 has a processing tank 20, which is formed of a shallow container whose length in the length direction is longer than that in the width direction, The rear end is open. In the processing tank 20, four paddle mixers 21 are provided in parallel as stirring and mixing means for stirring and mixing while transferring from the front side to the rear side. The paddle mixer 21 has a rotating shaft 22, and a paddle 23, which is an intermittent blade provided regularly at predetermined intervals in the axial direction and circumferential direction, is implanted on the rotating shaft 22.
By rotating the rotating shaft 22, the inside of the processing tank 20 is agitated by the action of the paddle 23, and the soil and the like in the processing tank 20 can be transferred.

The processing tank 20 is located at a position between the left and right traveling means 10 on the lower traveling body 1, and
5 is installed below. A drive unit 24 is provided at the front end of the processing tank 20, that is, at the end located in front of the vehicle. The driving unit 24 is provided with all the paddle mixers 21
And a transmission means such as a gear and a belt are provided. When one of the rotation shafts is rotated, the other three rotation shafts follow. In addition, the rotation directions of the adjacent rotation shafts 22 are opposite. As a result, a single hydraulic motor 25
Accordingly, the entire inside of the processing tank 20 having a predetermined width and length can be stirred thoroughly.

The processing tank 20 (a driving unit 24 is connected to the end of the processing tank 20, but in the following description, the processing tank 20
A driving unit 24 is included in the upper portion), a sediment input hopper 30 into which sediment is input, a soil improving material hopper 50 for supplying a soil improving material, and a discharging unit 70 are connected. . The earth and sand input hopper 30 is disposed on one end side of the processing tank 20, and a portion of the processing tank 20 where the earth and sand input hopper 30 is provided is on the upstream side, and a connection portion of the discharging means 70 is on the downstream side.

FIGS. 7 to 12 show a concrete construction of the earth and sand hopper 30. FIG. FIG. 7 shows an operation position of the earth and sand input hopper 30, FIG. 8 shows a residue removing position, and FIG. 9 is an exploded perspective view of the earth and sand input hopper 30 and its displacement mechanism. Further, FIG. 10 shows a section of a support mechanism of the earth and sand input hopper 30. Further, FIGS. 11 and 12 show each part constituting the earth and sand input hopper 30 and a displacement mechanism thereof.

In these figures, the earth and sand input hopper 30
The front work mechanism 3 has a bucket 18 into which earth and sand are injected. In order to easily perform the earth and sand injection work, the upper side has a wide mouth for efficiently receiving the earth and sand, and the lower side has earth and sand. And a hopper body 31 of a rectangular frame having an inclined wall so as to restrict an opening so as to be restricted at least by the width dimension of the processing tank 20, The sub-member 3 that is provided at the top and that functions as a filter means
And 2.

As can be seen from FIG. 11, the pen holder member 32 is formed by connecting rods 34 having a circular (or square) cross section to the frame 33 at predetermined pitch intervals. The spacing between the rods 34, 34 determines the sieving characteristics, and those having a particle size smaller than this spacing are guided through the pen 32 to the treatment tank 20, while those having a larger diameter are rods. 34, that is, on the sub child member 32. Therefore, the size of the rock or other object to be separated and removed can be arbitrarily adjusted by appropriately adjusting the interval between the rods 34. Therefore, according to the processing purpose, efficiency, etc., if the small solid matter such as gravel is separated and removed, for example, the interval between the rods 34 is made narrower. good.

The hopper body 31 is fixedly provided at the lower part of the frame 33 of the pond member 32. The hopper body 31 and the pond member 32 are unitized to form the earth and sand input hopper 30, and the earth and sand input hopper 30 is mounted on the processing tank 20. Then, as shown in FIG. 7, when the sub-member 32 is in a substantially horizontal state, it is in a state in which earth and sand can be charged, that is, an operating position. However,
The operating position of the child member 32 does not necessarily have to be horizontal, but may be, for example, a state where the operating member is inclined left and right by a predetermined angle. The cage member 32 is not fixedly held at the operating position, but can be inclined a predetermined angle laterally from the operating position. By inclining the cage member 32 by a predetermined angle,
As shown in FIG. 8, it is configured to be able to be displaced to a residue removal position where solid matter remaining on the upper part of the breamer member 32 is removed so as to be discharged to the side of the processing tank 20. In addition,
When the hopper main body 31 of the earth and sand input hopper 30 is displaced to the residue elimination position by fixing the hopper main body 31 to the side of the cage member 32, the upper part of the processing tank 20 can be opened. This is convenient for performing cleaning and other operations when the stagnation is accumulated. However, when displacing to the residue removal position, the hopper main body 31 must be lifted together, so that the weight increases accordingly. In order to avoid this weight increase, the hopper main body 31 may be fixed to the processing tank 20 instead of being fixed to the sub-member 32.

In order to displace the earth and sand input hopper 30 between the operating position shown in FIG. 7 and the residue removing position shown in FIG. . As is clear from FIGS. 9 and 10, mounting plates 35, 35 as tilting fulcrum members are provided upright on one of the right and left sides of the processing tank 20, and the earth and sand input hopper 30 is provided. A pair of connecting plates 36, 36 extend downward from a frame 33 that constitutes the child member 32, and the mounting plate 35 and the connecting plate 36 are pivotally connected by a support shaft 37, Earth and sand input hopper 30
Is rotatable up and down around the support shaft 37. On the other hand, support plates 38, 38 as horizontal support members are fixedly provided on the side of the processing tank 20 opposite to the mounting portion of the mounting plate 35. Support plate 3
Reference numeral 8 denotes vertical portions 38V, 38V extending straight upward from the side portions of the processing tank 20 and the upper surface of the driving portion 24, and the horizontal support portions 3 formed by bending the upper portions of the vertical portions 38V in the horizontal direction.
8H. Also, as is apparent from FIG. 10, projecting portions 33 a, 33 a extend horizontally inward on the left and right sides of the frame 33 constituting the sashimi child member 32, and the sashimi child member 32 is substantially horizontally extended. In the state, the horizontal support portion 38H of the support plate 38 is
3 will come into contact with the overhang portion 33a. As a result, the cage member 32 is held in a substantially horizontal operating position.

If the earth and sand input hopper 30 is rotated upward about the support shaft 37, it will be inclined by a predetermined angle. The inclined state of the earth and sand input hopper 30 is a residue removal position, and the inclination angle is set so as to be able to remove solids such as rocks remaining on the porcelain member 32, for example, about 45 ° to 60 °. It is desirable that In order to displace the earth and sand input hopper 30 between the operating position and the residue removing position, a support shaft 39 is provided at each of the vertical portions 38V of the support plate body 38, and the support shafts 39 have a pair of tilts. The lever 40 is pivoted. As shown in FIGS. 9 and 12, the tilting lever 40 has a substantially arcuate shape, and a concave portion in the middle is pivotally supported by the support shaft 39. Both ends of the tilting lever 40 are raised by a predetermined amount.
A rolling roller 41 is attached to a position near the part where the frame 33 is connected, and at the other end side, a part protruding from a side part of a contact part of the frame 33 to the support plate 38 so as to cross over the part. An operation unit 42 is provided. Tilt lever 4
The rolling roller 41 connected to the frame 33 is capable of rolling along the lower surface of both the projecting portions 33a of the frame 33, and the operating portion 42 projects laterally from the end of the frame 33 by a predetermined length. I have. Therefore, as shown by an arrow in FIG. 8, when the operation portion 42 is pushed downward, the tilting lever 40 simultaneously tilts around the support shaft 39, and the rolling roller 41 rotates the projecting portion 33a of the frame 33. As a result, the frame 33 is tilted upward about the support shaft 37, whereby the earth and sand input hopper 30 is tilted and displaced to the residue removing position.

Next, in order to supply a soil improving material such as lime or cement to the treatment tank 20, a soil improving material supplying means 50 is mounted. The soil improving material supplying means 50 is shown in FIGS.
The configuration shown in FIG. As is clear from FIGS. 13 and 14, the soil improvement material supply means 50 includes a supply source unit 51 installed on the frame of the upper swing body 2 and a soil improvement material hopper 52 provided on the lower traveling body 1 side. Is done. The flexible container 53 filled with the soil improving material is placed on the supply source unit 51, and the soil improving material is supplied from the flexible container 53 to the treatment tank 20 via the soil improving material hopper 52.

The supply source unit 51 is composed of a frame 54 erected on the frame of the upper swing body 2 and a supply unit 55 arranged below the frame 54, and the flexible container 53 is placed inside the frame 54. It is held so that it is held and its lower end enters the supply unit 55. And the supply unit 5
In FIG. 5, a cutter 56 is mounted on a support member 57 as shown in FIG. Therefore, when the flexible container 53 is mounted on the frame 54, the lower end of the flexible container 53 enters the supply unit 55 while being deformed by the action of its own weight. As a result, cutter 5
6 penetrates the lower end of the flexible container 53, so that the lower end of the flexible container 53 is cut off and flows into the supply unit 55.

The supply section 55 has a substantially inverted quadrangular pyramid shape. The lower end of the supply section 55 extends forward in the traveling direction of the upper swing body 2 and toward the center of the upper swing body 2. The soil improving material is supplied to the soil improving material hopper 52 from the lower end of the supply unit 55. Supply unit 5
1 is provided on the upper revolving unit 2 side, the soil improvement material hopper 52 is provided on the lower traveling unit 1 side, and the upper revolving unit 2 is revolvable with respect to the lower traveling unit 1. Depending on the position, the relative position between the supply unit 55 and the soil improving material hopper 52 may be shifted, and the supply timing of the soil improving material to the soil improving material hopper 52 is limited. When the soil improvement material is filled in the soil improvement material hopper 52,
No further soil improvement material can be supplied. For this purpose, the supply unit 55 is provided with a shutter 58,
When it is necessary to supply the soil improving material to the soil improving material hopper 52 by the shutter 58, and when the soil improving material can be supplied, a necessary amount of the soil improving material can be supplied. For this purpose, the soil improvement material hopper 52 is provided with an upper limit sensor 59a and a lower limit sensor 59b. Therefore, when the storage amount of the soil improving material in the soil improving material hopper 52 falls below the position of the lower limit sensor 59b, the shutter 5
When the shutter 8 is opened and supplied to a position beyond the upper limit sensor 59a, the shutter 58 is closed.

The soil improving material hopper 52 is detachably or fixedly mounted at a position adjacent to the position where the earth and sand input hopper 30 is mounted on the processing tank 20, and has a width substantially equal to the entire length of the processing tank 20. , And the front and rear wall surfaces are inclined in a direction approaching each other as going downward. Here, the opening area of the supply unit 55 with respect to the soil improvement material hopper 52 is smaller than the width dimension of the soil improvement material hopper 52, so that the soil improvement material is filled over the entire width of the soil improvement material hopper 52. A feeding means 60 composed of a screw conveyor or the like is provided in the width direction of the soil improvement material hopper 52 in order to make the wraparound the uniform.

At the lower end of the soil improving material hopper 52, a feeder 61 for supplying the soil improving material to the processing tank 20 by a fixed amount is provided, and the feeder 61 is a rotary type. In order to drive the feeder 61, a drive motor 62 is attached to the side surface of the soil improvement material hopper 52 so that a constant mixing ratio is obtained from the feeder 61 according to the amount of earth and sand fed in the processing tank 20. A controlled amount of soil improvement material is provided.

Further, a discharge means 70 is provided at the rear end of the processing tank 20 so as to be connected thereto. The discharge means 70 is provided in the processing tank 20
It constitutes the outlet of the improved soil generated inside,
As is clear from FIG. 3, the lower traveling body 1 is disposed at a position behind the crawler belt 14 constituting the traveling body 10. The specific configuration of the discharging means 70 is as shown in FIGS.

As is apparent from FIG.
Has a cylindrical discharge passage structure 71, which is arranged in a direction perpendicular to the traveling direction of the lower traveling body 1, and has an open discharge port 71a at one end. A discharge screw 72 is mounted so as to face the discharge port 71a from the other end side. The discharge screw 72 is composed of a continuous blade 72b provided on a rotary shaft 72a, and the rotary shaft 72a extends into the drive unit 75 via a bearing unit 74 connected to an end of the discharge passage 73. The drive unit 75 is provided with a discharge hydraulic motor 76, and the discharge hydraulic motor 76 drives the rotation shaft 72a of the discharge screw 72 to rotate.

Here, the discharging means 70 can be integrated with the processing tank 20, but it is preferable that the discharging means 70 be separable from the viewpoint of internal cleaning. For this purpose, a connection portion as shown in FIG. 17 is provided at the discharge path constituting body 71 constituting the discharge means 70 and at the rear end of the processing tank 20. That is, as shown in the figure, a substantially rectangular connecting cylinder 77 is provided continuously on the peripheral body of the discharge passage constituting body 71, and the processing tank 2 is provided.
The cover member 78 is mounted on the upper part of the rear end of the connection tank 77, and the connecting cylinder 77 and the portion of the processing tank 20 where the cover member 78 is mounted at the rear end are fitted to each other.
Although the processing tank 20 may be configured to be inserted into the connecting cylinder 77, the processing tank 20 is fixedly held with the cover member 78 attached to the processing tank 20 side. What is necessary is just to insert the front-end | tip part of the cover member 78 in the part 77.

As described above, in the processing tank 20, the paddle mixer 21 covers almost the entire length. The front end of the rotary shaft 22 in the paddle mixer 21 is rotatably supported by a bearing unit 25, but the rear end of each rotary shaft 22 must also be supported.
However, since the rear end side of the treatment tank 20 is a portion through which the improved soil passes, it should not obstruct the flow of the improved soil. The cover member 78 constitutes a connecting portion to the discharge means 70 and constitutes a mounting member for a bearing on the rear end side of the rotating shaft 22. For this purpose, as shown in FIGS. 18 and 19, a plurality of connecting rods 7 are provided on the inner surface of the cover member 78.
A support hanger 80 is connected to the lower ends of the connecting rods 79, and a bearing 81 is fixed to the support hanger 80 by welding or the like.

With the above construction, the excavated soil is excavated by the bucket 18 of the front working mechanism 3 constituting the excavating means, and the excavated soil is injected into the earth and sand input hopper 30 of the processing unit 4. In addition, by operating the respective parts such as the paddle mixer 21 of the processing tank 20, the excavated soil is taken into the processing tank 20 from the earth and sand input hopper 30 and transferred while being stirred while the excavated soil is transferred from the soil improving material hopper 52. The soil improvement material is supplied and uniformly stirred and mixed with the earth and sand to produce an improved soil. The improved soil moves to the discharging means 70 and is discharged to the outside by the action of the discharging screw 72. Moreover, by controlling the supply amount of the soil improvement material in accordance with the supply amount of the earth and sand, the mixing ratio becomes constant, and by sufficiently performing the stirring and mixing by the paddle mixer 21, an extremely high quality improved soil is produced. Can be.

In order to improve the efficiency and speed of the above-described soil improvement processing, the earth and sand put into the earth and sand input hopper 30 is promptly supplied into the processing tank 20, and the processing tank 20 contains materials other than earth and sand, especially rocks. Large solids, such as wood and concrete shards, must be kept out. When rocks or the like enter the processing tank 20, the smoothness of operation of the paddle mixer 21 is impaired. It is preferable to remove in advance so that extremely large solid matter is not put into the earth and sand input hopper 30. However, excluding pebbles and the like, only the completely processable earth and sand is selected and put into the earth and sand input hopper 30. In this case, the earth and sand must be sieved after being excavated by the bucket 18 of the front working mechanism 3, so that the processing steps become complicated, which is not preferable from the viewpoint of processing efficiency.

In view of the above, in the present embodiment, a sub-member 32 is provided as the earth and sand input hopper 30,
The injected earth and sand are rods 34 constituting the child member 32 of the cage.
Solids having a predetermined size or more are separated in accordance with the interval, so that the soil excavated by the bucket 18 can be directly input to the earth and sand input hopper 30. Here, in order to more quickly separate the earth and sand from the solid material by the skein member 32, the skein member 32 is vibrated or a rotatable scraping claw is provided at a portion between the rods 34. Just do it. Regardless of whether a mechanism for accelerating the separation is provided or not, when the earth and sand is injected into the earth and sand input hopper 30, the solids less than the distance between the earth and the rod 34, for example, small solids such as gravel and gravel, The above-mentioned size, for example, rocks and the like are separated, and large solids remain on the sub-member 32. If the injection of earth and sand is continued in this state, the gap between the rods 34 is closed by the residual solid matter,
The supply of the earth and sand into the treatment tank 20 is hindered.

Therefore, if a certain amount of solid matter accumulates on the sub-member 32, it is removed. For this purpose, the operating portion 42 of the tilting lever 40 is disposed so as to protrude laterally from the pond member 34. For example, the front working mechanism 3 is operated to place the bucket 18 above the operating portion 42. Then, the operation unit 42 is pressed downward by lowering the bucket 18 or the like. Then, the tilting lever 40
Rotates about the support shaft 39, and the side on which the rolling rollers 41 are provided is displaced upward. As a result, the rolling roller 41 rolls along the projecting portion 33 a of the frame 33, and the frame 33 is
8, the tilting displacement is performed in a direction away from the horizontal support portions 38H, 38H, and the earth and sand input hopper 30 is displaced to the residue removing position. As a result, the solid matter remaining on the sub-member 32 moves in a lower direction along the slope and falls from the side to the ground.

When the remaining solid matter is removed from the upper part of the sash member 32 as described above, the pressing force on the operation part 42 is released by lifting the bucket 18. Since the earth and sand input hopper 30 including the sashimi member 32 has only one side connected to the support shaft 37, the earth and sand input hopper 30 is moved by the action of its own weight.
8 returns to the operating position in contact with the horizontal support portions 38H, 38H. Further, since the rolling roller 41 is in contact with the lower surface of the projecting portion 33a of the frame 33, the tilt lever 40
Also returns to a substantially horizontal state. As a result, the upper part of the sub-child member 32 is completely opened, so that the earth and sand is smoothly and quickly separated from the solid matter by the subsequent charging of the earth and sand, and is supplied into the treatment tank 20.

Here, the mechanism for displacing the earth and sand input hopper 30 between the operating position and the residue removing position is not limited to the configuration of the above-described embodiment, but may be, for example, as shown in FIGS.
Can be configured as shown in FIG. In these figures, reference numeral 130 denotes an earth and sand input hopper, which is composed of a hopper main body 131 and a sub child member 132. The configuration is the same as that of the above-described embodiment.

At the position near one side of the frame 133, connecting plates 136 and 136 are provided at front and rear portions so as to extend downward, and both connecting plates 136 are connected to the side of the processing tank 20. It is rotatably connected via a support shaft 137 to mounting plates 135 and 135 erected on the drive unit 24 connected to the end. Also, on the side of the processing tank 20,
There are provided two support plate members 138 each having a vertical portion and a horizontal support portion, and the horizontal support portion on the upper surface of these support plate members 138 is on the opposite side to the portion where the connection plate 136 of the frame 133 is connected. It comes into contact with the lower surface of the side part.
Accordingly, this state, that is, the state shown by the solid line in FIG. Further, in order to displace the earth and sand input hopper 130 from this operation position to a residue removal position (a state of a virtual line in FIG. 21) inclined at a predetermined angle, the frame 133 includes:
An operation section 142 is provided so as to protrude laterally from the side where the connection plate 136 is provided.

With the above configuration, the earth and sand input hopper 130 is always stably held in a state where the frame 133 is in contact with the support plate 138 by the action of its own weight, that is, in the operating position. . Therefore, in this state, the earth and sand can be charged by the bucket 18. And the input of the earth and sand is repeated, and the solid material
When a large number of the residuals are left on the second unit 2, the operation unit 142 is pushed using the bucket 18 or the like in order to remove the residuals. Then, the frame 133 is rotated and displaced about the connecting portion to the support shaft 137, and the side opposite to the side to which the operation portion 142 is connected is separated from the support plate 138 and rises. . As a result, the cage member 132 is inclined by a predetermined angle, and the solid matter thereon is dropped and dropped to the ground along the inclination.

The position of the center of gravity of the earth and sand input hopper 130 is located on the opposite side of the support shaft 137 from the side on which the operation portion 142 is provided. Therefore, when the pressing force on the operation portion 142 is released, the earth and sand input hopper 130 By the action of its own weight, the side portion of the frame 133 returns to the substantially horizontal operating position where the side portions of the frame 133 abut against the horizontal support portions 138H, 138H of the support plate 138.

Further, in the embodiment shown in FIG. 22, the tilting hydraulic cylinder 242 as a driving means is used to tilt and displace the earth and sand input hopper 230 from the operating position to the residue removing position. It is shown. Frame 233 constituting earth and sand input hopper 230
The support shaft 237 is attached to a mounting plate 235 provided on the processing tank 20 side.
The tilting hydraulic cylinder 242 is held between the end surface of the processing tank 20 and the side surface of the frame 233 by being brought into contact with the connecting plate 236 pivotally supported by the support plate 238 and the operating position. When the tilting hydraulic cylinder 242 is in a contracted state, it is shown by a solid line in FIG. As described above, the earth and sand input hopper 230 is held at the operating position, and when the tilt hydraulic cylinder 242 is extended, the earth and sand input hopper 230 is tilted about the support shaft 237 to be displaced to the residue removal position. it can.

[0048]

As described above, according to the present invention, the filter means for separating the earth and sand constituting the earth and sand input hopper is provided on the processing tank by the operation position for separating the solid matter from the earth and sand. Since it is configured so that it can be displaced between the residue removing position for removing the residue on the filter means and being inclined in the diagonal rising direction, it is separated by the filter means in the earth and sand input hopper, and Residual rocks and the like can be easily removed, and the effect of smoothly and efficiently supplying earth and sand to the treatment tank can be obtained.

[Brief description of the drawings]

FIG. 1 is a front view of a soil improvement machine with excavation means showing one embodiment of the present invention.

FIG. 2 is a plan view of FIG. 1 omitting a front working mechanism.

FIG. 3 is a left side view of FIG.

FIG. 4 is a rear view of FIG. 1;

FIG. 5 is a side view of the processing unit according to the 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 hopper according to the embodiment of the present invention.

FIG. 8 is a front view of the earth and sand input hopper showing an operation state different from that of FIG. 7;

9 is an exploded perspective view of the earth and sand input hopper having the configuration of FIG. 7 and a displacement mechanism thereof.

10 is a cross-sectional view taken along the line XX of FIG. 2 showing the support mechanism of the earth and sand input hopper in the configuration of FIG. 7;

FIG. 11 is a plan view of a hopper body (a) and a child member (b) of the earth and sand input hopper shown in FIG. 7;

12 is a plan view (a) and a front view (b) of a tilting lever constituting the earth and sand hopper of FIG. 7;

FIG. 13 is an overall configuration diagram of a soil improvement material supply unit according to an embodiment of the present invention.

FIG. 14 is a side view showing a soil improvement material hopper and a supply unit which constitute the soil improvement material supply means in FIG. 13;

FIG. 15 is a sectional view of a supply unit in FIG.

FIG. 16 is a front view showing a configuration of a discharging unit according to the embodiment of the present invention.

17 is a structural explanatory view showing a mechanism for connecting the discharging means of FIG. 16 to a continuous processing tank.

18 is a sectional view taken along line YY of FIG.

19 is a sectional view taken along the line ZZ in FIG.

FIG. 20 is a front view of the earth and sand hopper showing the second embodiment of the present invention.

21 is a plan view of FIG.

FIG. 22 is a front view of the earth and sand hopper showing the third embodiment of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Lower traveling body 2 Upper revolving superstructure 3 Front working mechanism 4 Processing unit 5 Soil improving material supply means 10 Traveling body 16 Boom 17 Arm 18 Bucket 20 Processing tank 21 Paddle mixer 22 Rotating shaft 23 Paddle 30, 130, 2
Reference Signs List 30 Sand input hopper 31, 131 Hopper main body 32, 132 Child member 33, 133, 233 Frame 34, 134 Rod 35, 135, 235 Mounting plate 36, 136, 2
36 Connecting plate 37,137,39 Support shaft 38,138,2
38 Support Plate 40 Tilting Lever 41 Rolling Roller 42, 142 Operating Unit 242 Tilting Hydraulic Cylinder

 ──────────────────────────────────────────────────の Continuing from the front page (72) Inventor Hisagi Hashimoto 650, Kandamachi, Tsuchiura City, Ibaraki Prefecture Inside the Tsuchiura Plant of Hitachi Construction Machinery Co., Ltd. (72) Inventor Satoshi Sekino 650 Kandamachi, Tsuchiura-shi, Ibaraki Hitachi Construction Machinery Co., Ltd. Tsuchiura Plant F-term (reference) 2D040 AB07 BA13 EB04 EB05 FA00

Claims (5)

[Claims] 1. A stirring / mixing means for feeding earth and sand and a soil improving material into a traveling vehicle having a pair of right and left running bodies provided on a lower frame, and transferring the soil and the soil improving material while stirring and mixing. In those equipped with a processing tank having
The processing tank is provided with a sediment charging hopper provided with a filter means for separating soil and solid matter, and the filter means is an operating position for separating the solid matter from the soil so as to cover an upper part of the processing tank. And a displaceable position between a slanted rising direction and a residue removing position for removing the residue on the filter means. 2. The filter means comprises a sub-member provided with rods arranged on a mounting member at a predetermined pitch interval,
2. The soil improvement machine according to claim 1, wherein the tilting fulcrum member is vertically rotatably connected by a tilting fulcrum member, and the tilting fulcrum member is connected to one side of the processing tank. . 3. A tilting lever is pivotally provided on a side of the processing tank opposite to the side on which the tilting fulcrum member is provided, and the tilting lever is provided at one end of the processing tank with a lower surface of the sashimi member. Along with the push-up section that moves along,
The other end side is provided with an operation portion which can be pushed and operated downward, and the operation portion is configured to displace the child member between the operation position and the residue removing position. 2. The soil improvement machine according to 2. 4. A horizontal support member is provided on a side portion of the processing tank opposite to a side on which the tilt fulcrum member is provided, and a horizontal support member for supporting the gantry member at the operating position, and the tilt fulcrum member of the gantry member is provided. 3. The soil according to claim 2, wherein an operation portion that is protruded laterally from a connection portion side to the movable portion and that is displaced to the residue removing position by being pushed downward is connected and provided. 4. Improved machine. 5. A horizontal support member for supporting the submerged child member at the operating position is provided on a side of the processing tank opposite to the side provided with the tilting fulcrum member, and the submerged child member includes 3. The soil improvement machine according to claim 2, wherein a driving means for tilting the tilting fulcrum member upward and displacing the same to the residue removing position is provided.