JP2007191980A - Gravel removing device and soil improving system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a gravel removing device and a soil improving system using the gravel removing device constituted to efficiently remove gravel out of clayey sediment. <P>SOLUTION: The gravel removing device comprises a conveyor 2 for conveying sediment, and a gravel capturing device 4 for capturing gravel 27 out of sediment conveyed on the conveyor 2. The gravel capturing device 4 comprises a driving motor 8 and a rotation body 7 rotationally driven on the conveyor 2 by the motor 8. The rotation body 7 is rotationally driven to discharge the gravel 27 in sediment conveyed on the conveyor 2, to the side of the conveyor 2. The gravel removing device 1 and a soil improving machine constitute the soil improving system. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a debris removal device for removing gravel from earth and sand and a soil quality improvement system using the debris removal device.

  In the case where soil improvement is performed by mixing a soil improvement agent into the earth and sand using a soil improvement machine, gravel having a size that cannot be treated by the soil improvement machine (for example, a diameter of 150 mm or more) may be mixed in the earth and sand. Usually, in the case of earth and sand containing such gravel, the gravel is removed using a screen-like sieve such as a screen or a skeleton bucket (see, for example, Patent Document 1). However, when gravel is mixed in clay-like earth and sand, even if these sieving machines are used, the debris efficiency becomes extremely poor because clay adheres to the gravel.

  Therefore, at present, when improving clay mixed with gravel, only extremely large gravel is removed by a hydraulic excavator with a bucket and put into a soil improvement machine.

JP-A-9-78624

  However, when removing gravel from clay soil, conventionally, only large gravel has been removed using a bucket of a hydraulic excavator, so it is not possible to increase the amount of raw material soil to the soil improvement machine. In addition, there is a problem that the soil improvement machine is overloaded by gravel and the processing efficiency becomes very low.

  In view of the above problems, an object of the present invention is to provide a debris removal device having a configuration capable of efficiently removing gravel from clay soil and a soil improvement system using the debris removal device.

The debris device according to claim 1 is a debris device for separating gravel from earth and sand.
A conveyor for transporting earth and sand;
A gravel capturing device that is provided on the conveyor and captures gravel from the earth and sand transported on the conveyor;
The gravel trapping device includes a driving device and a rotating body that is driven to rotate on the conveyor by the driving device and discharges gravel in the earth and sand conveyed on the conveyor to the side of the conveyor. And

The debris device according to claim 2 is the debris device according to claim 1,
The rotating body is provided with a rotating shaft provided to be inclined with respect to the conveying direction of the conveyor,
The rotating shaft is provided with a plurality of protrusions on the outer periphery, and is provided with a plurality of protrusions on the outer periphery.

The debris device according to claim 3 is the debris device according to claim 1,
The rotating body includes a rotating shaft provided with screw blades.

The debris device according to claim 4 is the debris device according to any one of claims 1 to 3,
It has a means to adjust the height of the rotating body with respect to the conveyor.

A soil improvement system according to claim 5 is a degraver according to any one of claims 1 to 4,
It is provided with the soil improvement machine which improves the earth and sand which were provided in the downstream of this debris device, and whose gravel was removed by the said debris device.

  According to the invention of claim 1, of the earth and sand transported on the conveyor, the gravel cannot pass between the rotating body and the conveyor, and the earth and sand attached to the gravel is removed while being driven to rotate by the rotating body. Because it is discharged from the side of the slab, even if it is sticky earth and sand, it is possible to remove the gravel continuously and efficiently just by putting the earth and sand into the conveyor, compared to the case where the pebbles are removed by a sieving machine. .

  In addition, since the gravel is removed from the earth and sand that is the raw material, when soil improvement is performed by the soil improvement machine, the overload due to the gravel that is a burden on the soil improvement machine is eliminated, and the processing efficiency in the soil improvement machine is improved, Damage to the soil conditioner can be prevented.

  According to the invention of claim 2, the gravel is driven to rotate by the rotation of the projection plate with the projection toward the rotation shaft, so that the earth and sand adhering to the gravel is removed by the projection, and the rotation shaft is in the direction of carrying the earth and sand. Therefore, the gravel can be moved to the side of the conveyor and discharged along with the rotation of the rotating body. In addition, this rotating body has an advantage that it can be provided at a relatively low cost by a combination of a rotating shaft and a mass production plate.

  According to the invention of claim 3, since the rotating body having screw blades is used, as the screw blades rotate, the gravel is moved while scraping the earth and sand adhering to the gravel with the screw blades. Can be moved to and degraved.

  According to the invention of claim 4, it is possible to select the size of gravel to be removed by adjusting the distance between the conveyor and the rotating body.

  According to the invention of claim 5, since the gravel is efficiently removed by the debris removal device and the earth and sand improved by using the earth and sand from which the gravel has been removed is obtained, the soil treatment in the soil improvement machine can be performed efficiently.

  FIG. 1 is a side view showing an embodiment of a debris device of the present invention, FIG. 2 is a plan view thereof, FIG. 3 is a rear view of FIG. 1, and FIG. 4 is a front view of FIG. The deburring device 1 includes a conveyor 2, earth and sand introduction hopper 3 provided at one end thereof, and a gravel trapping device 4.

  5A, 5B, and 5C are a plan view, a side view, and a front view of the gravel trapping device 4, respectively. The gravel trapping device 4 has an attachment frame 6 for attaching the conveyor 2 on the left and right sides of the base frame 5, and the attachment frame 6 has a pin hole 6a. Reference numeral 7 denotes a debris rotating body. One end of the rotating body 7 is connected to an output shaft of a motor 8 provided on the base frame 5, and the other end of the vertical body is erected on the base frame 5. A bearing 10 provided on the frame 9 is rotatably supported.

  6A, 6B, and 6C are a plan view, a side view, and a rear view of the conveyor 2, respectively. In this conveyor 2, a driving roller 12 that is rotated by a motor (not shown) is attached to one end of a conveyor frame 11, a driven roller 13 is attached to the other end, and a belt 14 is wound around these rollers 12 and 13. The hopper 3 is installed on the drive roller 13 side of the conveyor frame 11. Further, on the left and right sides of the conveyor frame 11, there are mounting frames 15 that match the mounting frames 6 of the gravel capturing device 4, and a plurality of pin holes 16, 17, 18 are provided in these mounting frames 15.

  As shown in FIG. 1 to FIG. 4 and FIG. 7, the gravel catching device 4 and the conveyor 2 are connected to the pin holes 6 a of the attachment frame 6 of the gravel catching device 4 in the pin holes 16 to 16 provided in the attachment frame 15 of the conveyor frame 11. 18 are combined together by inserting pins 19 together. In this combined state, it becomes the direction inclined diagonally with respect to the earth-and-sand conveyance direction of the conveyor 2 shown by the arrow a in FIG.

  In this case, when the pin hole 18 of the bottom part of the attachment frame 15 of the conveyor frame 11 is coupled to the pin hole 6a of the attachment frame 6 of the gravel catching device 4 by the pin 19, as shown in FIG. The distance H1 between 2 and the rotating body 7 is the largest. When the pin holes 6a and 17 are combined and connected by the pin 19, the interval H2 between the conveyor 2 and the rotating body 7 is smaller than the interval H1 (H1> H2) as shown in FIG. 7B. Further, when the pin holes 6a and 16 are combined and connected by the pin 19, as shown in FIG. 7C, the interval H3 between the conveyor 2 and the rotating body 7 becomes smaller than the interval H2 (H2> H3).

  FIG. 8 is a view showing the structure of the rotating body 7, and the projection plates 21 are attached to the rotating shaft 20 at equal intervals (in the present embodiment, at equal intervals). Each protrusion plate 21 has protrusions 22 on the outer periphery with a predetermined interval in the circumferential direction (90 degrees in this embodiment). Each projection plate 21 is arranged so that the difference in inclination angle between adjacent ones of the projection 22 is 22.5 degrees (θ = 22.5 degrees).

  The protrusion plate 21 is attached to the rotary shaft 20 by fixing the protrusion plate 21 to the rotary shaft 20 by welding, a fitting hole of the protrusion plate 21 in the rotary shaft 20, and a key groove on the rotary shaft 20. And a method in which a key is inserted into both of the key grooves and a spacer is interposed between the projection plates 21, and the rotary shaft 20 has a square cross-sectional shape, and the mounting holes of the rotary shaft 20 of the projection plate 21 are also square. Thus, there is a method of interposing a spacer between the protruding plates 21.

  In the case of carrying out debris removal by the debris removal device 1, as shown in FIG. 9, the conveyor frame 11 is placed and fixed on the gantry 24, and the earth and sand 28 including the gravel 27 is crushed by the bucket 26 of the excavator 25, for example. Are put into the hopper 3 on the conveyor 2 to operate the conveyor 2 and to rotate the rotating body 7.

  In this case, as indicated by an arrow R in FIG. 1, the rotation direction of the rotating body 7 is a direction in which gravel in the earth and sand transported on the conveyor 2 jumps up. As a result, the gravel 27 is turned into an arrow as shown in FIG. As shown by K, it gradually moves to the side of the conveyor 2, falls and accumulates as indicated by 29 in FIG. On the other hand, the earth and sand from which the gravel 27 has been removed falls under the rotating body 7 as indicated by an arrow L in FIG. 2 and falls from the front end of the conveyor 2.

  Here, as shown in FIG. 8, the protrusions of the protrusion plates 21 are different in the direction of the protrusions 22 between the adjacent protrusion plates 21. Opportunity to collide with the lands increases and debris can be efficiently removed.

  Moreover, since the debris device of the present invention can continuously remove the debris by simply putting the earth and sand 28 into the conveyor 2, it is more efficient than removing the gravel from the earth and sand with a sieving machine such as a skeleton bucket. Gravel can be removed. In particular, since the earth and sand are forcibly separated from the surface of the gravel contained in the clayey earth and sand due to the rotation of the protruding plate 21, the earth and sand are efficiently separated from the gravel and separated with less sediment. Can do.

  Further, the rotating body 7 of this embodiment has an advantage that it can be provided at a relatively low cost by the combination of the rotating shaft 20 and the projecting plate 21 that can be mass-produced.

  10 and 11 are a side view and a plan view showing an embodiment of the soil improvement system of the present invention. This soil improvement system is a combination of a soil improvement machine 30 on the downstream side of the debris device 1 of the above embodiment. When the present invention is applied, the soil improvement machine may be a stationary type, but the soil improvement machine 30 of the present embodiment is a self-propelled type having a traveling body 31.

  The soil improvement machine 30 of the present embodiment discharges the mixed material with a conveyor 33 for introducing earth and sand with a hopper 32, a supply unit 34 for the soil improvement material, and a stirring and mixing unit 35 for the earth and soil improvement material. And a conveyor 36.

  Thus, since the gravel is removed from the earth and sand as the raw material by the soil improvement machine 30 with the debris removal device 1 attached, when the soil improvement is performed by the soil improvement machine 30, the excess of the gravel that is a burden on the soil improvement machine 30 is caused. The load is eliminated, the processing efficiency of the soil improvement machine 30 is improved, and damage to the soil improvement machine 30 can be prevented.

  FIG. 12 shows another embodiment of the soil improvement system of the present invention. In this embodiment, a hydraulic excavator 25 is interposed between the debris device 1 of the embodiment and the soil improvement machine 30. Raw material (sediment) 28 containing gravel 27 is put into the hopper 3 of the debris device 1 for debris removal, and the debris 40 thus removed is transferred to the hopper 32 of the soil improvement machine 30 using a hydraulic excavator 25. It is intended to improve the soil quality.

  The degrabbing device of the present invention may be a rotary body 7 in which, for example, a rod-like protrusion is directly disposed on the rotary shaft 20 or may have a screw blade 41 as shown in FIG. The screw blades 41 may be discontinuous. In the case where the rotating body 42 having the screw blades 41 is used, the rotating body 42 does not need to be inclined with respect to the conveyor 2 and intersects with the conveyor 2 so as to be substantially perpendicular to the conveyor 2 as illustrated. You may install as follows.

  When the rotating body 42 having the screw blades 41 is used as described above, the gravel 27 is indicated by the arrow K while the screw blade 41 scrapes the earth and sand adhering to the gravel 27 with the rotation of the screw blade 41 indicated by the arrow R. The debris is moved to the side of the conveyor, and the debris can be discharged from the end of the conveyor 2 as indicated by an arrow L.

It is a side view which shows one Embodiment of the debris apparatus by this invention. It is a top view of FIG. It is a rear view of FIG. It is a front view of FIG. (A), (B), (C) is the top view, side view, and front view of the gravel capturing apparatus of this Embodiment, respectively. (A), (B), (C) is the top view, side view, and rear view of the conveyor of this Embodiment, respectively. (A), (B), (C) is a side view which respectively shows the height adjustment aspect of the gravel capture apparatus of this Embodiment. It is a figure which shows the structure of the rotary body of this Embodiment. It is a side view which shows an example of the working state of the debris apparatus of this Embodiment. It is a side view which shows one Embodiment of the soil improvement system by this invention. It is a top view of FIG. It is a side view which shows other embodiment of the soil quality improvement system by this invention. It is a top view which shows other embodiment of the debris apparatus by this invention.

Explanation of symbols

1: debris device, 2: conveyor, 3: hopper, 4: gravel trapping device, 5: base frame, 6: mounting frame, 6a: pin hole, 7: rotating body, 8: motor, 9: vertical frame, 10 : Bearing, 11: conveyor frame, 12: drive roller, 13: driven roller, 14: belt, 15: mounting frame, 16, 17, 18: pin hole, 19: pin, 20: rotating shaft, 21: protruding plate, 22: protrusion, 24: mount, 25: hydraulic excavator, 26: bucket, 27: gravel, 28: earth and sand, 29: accumulated gravel, 30: soil improvement machine, 31: traveling body, 32: hopper, 33: conveyor, 34: Supply unit of soil improvement material, 35: Stirring and mixing unit, 36: Conveyor, 40: Debris removed, 41: Screw blade, 42: Rotating body

Claims (5)

In debris removal equipment that separates gravel from earth and sand,
A conveyor for transporting earth and sand;
A gravel capturing device that is provided on the conveyor and captures gravel from the earth and sand transported on the conveyor;
The gravel trapping device includes a driving device and a rotating body that is driven to rotate on the conveyor by the driving device and discharges gravel in the earth and sand conveyed on the conveyor to the side of the conveyor. Debris equipment. In the debris device according to claim 1,
The rotating body is provided with a rotating shaft provided to be inclined with respect to the conveying direction of the conveyor,
A degrabbing apparatus comprising: a projection plate provided at intervals in a plurality of locations in the axial direction of the rotation shaft and having a projection on the outer periphery. In the debris device according to claim 1,
The rotator comprises a rotating shaft provided with screw blades. In the debris apparatus in any one of Claim 1 thru | or 3,
A debris apparatus comprising means for adjusting a height of the rotating body relative to a conveyor. A debris device according to any one of claims 1 to 4,
A soil quality improvement system comprising a soil quality improvement machine provided on the downstream side of the debris device, which reforms the earth and sand from which the gravel has been removed by the debris device.

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