JP2007046299A - Earth-stone separator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an earth-stone separator suitably mounted on a loading space of a truck by efficiently separating excavation earth into earth and stones. <P>SOLUTION: Since this earth-stone separator is provided with a conveyor C having a screen belt 1 carrying the earth and stones, a crushing belt 20 supporting longitudinal both ends in the carrying direction of the conveyor C, suspended above the conveyor C and crushing carried earth by the screen belt 1, a belt conveyor B carrying the earth falling from the conveyor C and a restraining means F restraining the movement to the upper side of the crushing belt 20, the earth-stone separator can be reduced in the size and weight, and can efficiently separate the earth and the stone. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a debris separator.

  Conventionally, treatments such as insolubilization to prevent contaminants such as heavy metals from being dissolved out by mixing adsorbents into contaminated soil, soil improvement, etc. have been performed in large plants, and are far away from urban areas. Since it is necessary to transport excavated soil to the plant, it was inefficient to process small-scale excavated soil.

  On the other hand, in recent years, in order to cope with small-scale construction for processing a relatively small amount of excavated soil in an urban area or the like, there has been a proposal for a processing device that can be moved. Is a roll screen that screens excavated soil into soil and stone, a mixer that mixes chemicals and the like into the soil, a belt conveyor that transports the soil that has passed through the roll screen to the mixer, and a soil that is transported by the belt conveyor. A truck that is equipped with a feeder that supplies lime powder to the truck bed, a mixture screen that re-sieves the treated soil discharged from the mixer, and another machine that transports the screen below the mixer screen to the ground A belt conveyor is loaded on the truck bed.

And this processing apparatus performs the above-mentioned process by unloading a mixer screen and a belt conveyor from a truck bed and deploying them at a construction site (see Patent Document 1).
Japanese Patent Laid-Open No. 11-140904 (Embodiment of the Invention, FIG. 2)

  In the mobile processing apparatus as described above, first, the excavated soil is screened into soil and stone with a roll screen, and only the soil is conveyed to the mixer. However, there are the following problems. .

  In the conventional device, it is attempted to screen the soil and stone with a roll screen, but with this, the soil cannot be made finer, and as a result, large soil blocks cannot pass through the roll screen and are treated the same as stone. It is returned to the ground without being sent to the mixer.

  If it does so, the soil which needs a process cannot be processed reliably, but there exists a malfunction which cannot perform an efficient soil process.

  In addition, a crusher that crushes excavated soil together with stones as seen in large plants not only makes the machine larger and inefficient, but also cannot be mounted on the truck bed itself.

  Therefore, the present invention was devised to improve the above-mentioned problems, and the object of the present invention is to efficiently separate excavated soil into soil and stone and to be mounted on a truck bed. It is to provide a suitable debris separation device.

  In order to achieve the above-described object, the present invention provides a conveyor having a screen belt for transporting debris and a screen belt that is supported at both ends of the conveyor in the transport direction and suspended above the conveyor. The crushing belt for crushing the soil transported in 1), the belt conveyor for transporting the soil falling from the conveyor, and the suppression means for suppressing the upward movement of the crushing belt.

  In the debris separation apparatus of the present invention, the earth block can be crushed by the crushing belt and the screen belt while the excavated soil is being conveyed by the conveyor, and further, a suppression means for suppressing the upward movement of the crushing belt is provided. Because it compresses the soil that passes between the screen belt and the crushing belt, it prevents the crushing belt from being lifted by hard soil and prevents the soil from passing through without being crushed. It is possible. Therefore, the soil can be efficiently crushed, and the separation accuracy of the soil and stone is improved.

  Accordingly, the soil can be efficiently put into the mixer, so that the soil insolubilization processing work becomes very efficient.

  Furthermore, since the soil and stones can be separated efficiently during excavation soil transport without the need for a large-scale crusher, the stone separation device is small and lightweight, making it easier to mount on the truck bed. Suitable for.

  The present invention will be described below based on the illustrated embodiment. FIG. 1 is a front view of a debris separator in one embodiment. FIG. 2 is a perspective view of a debris separating apparatus according to an embodiment. FIG. 3 is a diagram illustrating a state in which the debris separator according to the embodiment is mounted on a truck bed. FIG. 4 is a perspective view showing a part of the screen strip in the embodiment. FIG. 5 is a perspective view showing a part of a crushing belt in one embodiment. Drawing 6 is a figure showing the state where excavated soil is conveyed with the debris separation device in one embodiment. FIG. 7A is an enlarged view of a crushing belt in a modification of one embodiment provided with protrusions. FIG. 7B is an arrow view seen from the direction A of the crushing belt in the modification of the embodiment including the protrusions. FIG. 8 is an arrow view seen from the B direction of the crushing belt in the modification of the embodiment. FIG. 9 is a front view of a debris separation device according to another embodiment. FIG. 10 is a diagram illustrating a state in which excavated soil is being transported by the debris separator according to another embodiment. FIG. 11 is a diagram illustrating a state where excavated soil is being transported by the debris separator according to a modification of the other embodiment.

  As shown in FIG. 1 and FIG. 2, the debris separator D in one embodiment is supported by a conveyor C having a screen strip 1 for conveying debris and both ends of the conveyor C in the front and rear directions with respect to the conveying direction of the conveyor C. The crushing belt 20 that crushes the soil suspended above the conveyor C and conveyed by the screen belt 1, the belt conveyor B that conveys the soil falling from the conveyor C, and the upward movement of the crushing belt are suppressed. 3 and is mounted on the loading platform of the truck T as shown in FIG.

  The debris separating apparatus D conveys the separated soil to the mixer 30 mounted on the loading platform of the truck T while separating the debris, and conveys the separated stone to the stone discharge conveyor 40 that discharges the separated stone to the ground. To do.

  Although the mixer 30 is not shown in detail, the soil dropped and thrown from the end of the belt conveyor B is finely pulverized by a plurality of internally provided toothed rotors to remove contaminants such as minerals. An insolubilizing agent containing an adsorbent to be adsorbed is sprayed on the soil and discharged to the ground.

  Hereinafter, the debris separating apparatus D will be described in detail. As shown in FIGS. 1 and 2, the conveyor C includes a pair of opposing frames 2 and 3, and rotating shafts pivotally attached to both ends of the frames 2 and 3. 4, 5, sprockets 6 provided at both ends of the rotating shafts 4, 5, and a screen strip 1 wound around the rotating shafts 4, 5, and inclined at a predetermined angle on the loading platform of the track T It is installed. The rotating shaft 5 is driven to rotate by a driving source such as an electric motor (not shown). Therefore, each sprocket 6 provided on the rotating shaft 5 turns the screen belt 1 counterclockwise in FIG. A drive sprocket that rotates in the transport direction.

  As shown in FIG. 4, the screen belt 1 includes a chain belt 11 wound around each sprocket 6 on the frame 2 side, a chain belt 11 wound around each sprocket 6 on the frame 3 side, and each chain belt 11. , 11 and a plurality of connecting shafts 12 spanned with a predetermined interval L in the conveyance direction of the screen band 1 between the axes of the links a.

  Further, a hopper 7 for placing the excavated soil on the screen belt 1 of the conveyor C is installed above the base end side of the frames 2 and 3 which are on the rear side with respect to the conveying direction of the screen belt 1 of the conveyor C. The excavated soil put into the hopper 7 is transported upward in FIG. 1 by rotating the screen belt 1 in the transport direction. The large size soil passes through the screen belt 1 and falls downward.

  And above the screen belt 1 of this conveyor C, the supporting members 21 and 22 which respectively support the both ends of the crushing belt 20 slidably are provided at positions which are front and rear with respect to the conveying direction of the conveyor C, Specifically, the support member 21 disposed at the top in FIG. 1 is provided on the frames 2 and 3, and the support member 22 disposed at the bottom in FIG. 1 is provided at the end of the hopper 7.

  As shown in FIG. 5, the crushing belt 20 includes a pair of chain belts 23 and a plurality of connecting shafts 24 spanned between the shafts of the links b in each chain belt 23, and the distance between the connecting shafts 24 is The screen band 1 is set so as to be shorter than the distance L between the connecting shafts 12.

  The both ends of the crushing belt 20 are supported by the support members 21 and 22 so as to be able to swing, and the crushing belt 20 is suspended above the conveyor C so as to leave a predetermined gap above the screen band with respect to the screen band 1. While being lowered, the middle part of the crushing belt 20 is slackened and is in contact with the upper surface of the screen band 1.

  The above-described support member 21 is movable on the frames 2 and 3 so that the slackness of the crushing belt 20 can be adjusted, whereby the upper surface of the screen belt 1 is adjusted. It is also possible to form a gap between the belt and the lower surface of the crushing belt 20.

  Subsequently, the suppression means for suppressing the upward movement of the crushing belt 20 is a plurality of heavy objects F attached to the upper surface of the crushing belt 20 with a predetermined interval in the present embodiment.

  Accordingly, the crushing belt 20 is urged downward by the heavy object F toward the screen band 1 side. Although not specifically shown, the heavy object F is composed of a plurality of plate-like weights, is detachably attached to the crushing belt 20, and is weighted by changing the number of the weights. The weight of the object F can be changed.

  Then, as shown in FIG. 6, when the excavated soil W mixed with the debris thrown into the hopper 7 is conveyed upward in FIG. 1 by the screen belt 1, the excavated soil W is separated from the crushing belt 20 and the screen in the middle thereof. It falls between the belt 1 and is sandwiched between the crushing belt 20 and the screen belt 1, and the earth lump in the excavated soil W is crushed and falls downward when the size of the screen belt 1 is less than the interval L. It will be.

  On the other hand, since the stone S in the excavated soil is not crushed just by being sandwiched between the crushing belt 20 and the screen belt 1, the stone having a size of the interval L or more remains as it is on the screen belt 1, Eventually, it will drop downward from the leading edge of the conveyor C.

  Here, since the crushing belt 20 has the above-described configuration, each link b can change the posture in accordance with the shape of the stone S that is not crushed. Is prevented.

  The crushing belt 20 is attached with a heavy load F that is a restraining means, and compresses the soil passing between the screen belt 1 and the crushing belt 20, so that the crushing belt 20 is lifted by the hard soil. It is possible to prevent the soil from passing through without being crushed. Therefore, the soil can be efficiently crushed, and the separation accuracy of the soil and stone is improved.

  Moreover, since the weight can be changed for each heavy object F as described above, a compressive force suitable for the hardness of the soil can be applied to the soil conveyed by the screen belt 1. it can.

  Further, since both ends of the crushing belt 20 are supported so as to leave a predetermined gap with respect to the screen belt 1, the excavated soil does not run above the crushing belt 20, and the intermediate portion is loosened. Therefore, the space between the crushing belt 20 and the screen belt 1 is gradually narrowed, and the excavated soil can be smoothly guided between the crushing belt 20 and the screen belt 1 to finely crush the soil mass. In addition, about the attachment to the crushing belt 20 of the heavy article F, as long as it does not prevent the movement of the said crushing belt 20, what kind of attachment method may be employ | adopted, for example, the connection shaft 24 is connected. What is necessary is just to fasten the said heavy load F with the volt | bolt and nut to the attachment member comprised with the some ring penetrated and the board couple | bonded with a ring.

  In addition, as shown in FIGS. 7A and 7B, as shown in FIGS. 7A and 7B, the connecting shaft 24 of the crushing belt 20 protrudes toward the screen belt 1 side so that the clot can be crushed more efficiently. The protrusion 25 may be attached.

  The protrusion 25 is formed in a substantially triangular shape on the tip side that protrudes toward the screen band 1 and is formed with a recess 26 that opens from the other end side and into which the connecting shaft 24 is inserted. The connecting shaft 24 is loosely fitted between the recess 26 and the U-shaped plate 27 attached to the other end of the protrusion 25 and closing the opening of the recess 26, whereby the protrusion 25 is fixed to the connecting shaft 24. Is done. A plurality of protrusions 25 are arranged in the axial direction on the connecting shaft 24, and the protrusions 25 adjacent to each other in the axial direction of the connecting shaft 24 are connected by the plate 27, and a plurality of protrusions 25 are arranged in the axial direction of the connecting shaft 24. Are connected in a daisy chain by a plate 27.

  The plurality of protrusions 25 are provided on the connecting shaft 24 every other direction in the traveling direction of the screen band 1, and the protrusions 25 adjacent to each other in the traveling direction of the screen band 1 are connected to the connecting shaft 24. It is attached to the connecting shaft 24 so as to be shifted in the axial direction. In addition, as shown in FIG. 6, it attaches to every other connection shaft 24 of the range Z close | similar to the screen belt | band | zone 1 of the crushing belt 20.

  Therefore, even if a clot transported by the screen band 1 passes through between the projections 25 attached to one connecting shaft 24, the clot can be crushed by the projection 25 attached to the next connecting shaft 24, and the crushing unevenness. It is possible to avoid crushing the soil mass evenly.

  Incidentally, the shape of the protrusion 25 may be arbitrarily set. However, since the protrusion 25 shown in the figure has a substantially triangular shape and has a sharpened tip, the protrusion 25 is interposed between the crushing belt 20 and the screen belt 1. The entering soil mass can be efficiently crushed, and further, the connecting shaft 12 of the screen band 1 is prevented from being caught by the protrusion 25, and the progress of the screen band 1 is not hindered.

  As shown in FIG. 8, a heavy object F is attached above the protrusion 25, and specifically, an L-shape screwed to a plate 27 disposed on both ends of the connecting shaft 24. A heavy object F is screwed onto the plates 28 and 28, and the heavy object F is arranged in the axial direction of the connecting shaft 24 and attached to a plurality of protrusions 25 connected by a plate 27.

  Accordingly, the load of the heavy object F can be concentrated on the protrusions 25 provided on the crushing belt 20, so that the soil crushing ability can be improved and the soil can be efficiently crushed. Since lifting from the screen belt 1 can be prevented, the soil can be crushed uniformly, and the soil mass can be crushed more evenly.

  Then, as described above, the crushed soil blocks and soils pass through the connecting shafts 12 of the screen belt 1 and fall downward, but these soils M are placed so as to overlap with the lower part of the conveyor C. It will fall on the belt 31 of the belt conveyor B which has been arranged.

  Specifically, the frames 32 and 33 on both sides of the belt conveyor B are connected to the lower ends of the frames 2 and 3 of the conveyor C, and the frames 32 and 33 of the belt conveyor B are fixed to the loading platform of the truck T. A plurality of support legs 51, 52, 53, 54 having different lengths are fixed to the upper ends of the support legs 51, 52, and the debris separating device D is mounted on the loading platform of the truck T at an angle.

  This belt conveyor B has a shorter conveying distance than the conveyor C, and more specifically, the terminal end of the belt conveyor B is disposed at a position closer to the front side than the front end of the conveyor C. A charging port of the mixer 30 is opened immediately below the front end of the belt conveyor B. Therefore, the soil that has fallen on the belt conveyor B is transported to the mixer 30 by the belt conveyor B and is put into the mixer 30.

  On the other hand, a stone discharge conveyor 40 is disposed below the foremost end of the conveyor C, and the stone remaining on the screen belt 1 is eventually returned to the ground by the stone discharge conveyor 40.

  As described above, since the conveyance end of the belt conveyor B disposed below is located closer to the conveyance direction than the conveyance end of the conveyor C, the stone is efficiently discharged to the ground, and the soil is removed. It is possible to put into the mixer 30.

  In addition, as described above, the earth lump is crushed by the crushing belt 20 and the screen belt 1 while the excavated soil is conveyed by the conveyor C, so that the earth and the stone can be efficiently separated.

  Accordingly, the soil can be efficiently put into the mixer, so that the soil insolubilization processing work becomes very efficient.

  Furthermore, since the soil and stone can be efficiently separated during the excavation soil transport without the need for a large stone crusher, the soil separation device D is small and light and can be easily mounted on the truck bed. Suitable for mounting.

  As described above, since the debris separating device D is tilted and mounted on the loading platform of the truck T, the inlet of the hopper 7 can be lowered, so that excavated soil can be input even with a small excavator. In addition, a tall mixer can be used.

  It continues and the debris separation apparatus D1 in other embodiment is demonstrated. As shown in FIG. 9, the debris separating apparatus D <b> 1 according to another embodiment is configured such that a plate body G that is a restraining means is disposed above the crushing belt 20 at a predetermined interval with respect to the screen band 1.

  The plate body G is inclined so as to be separated from the screen belt 1 in the front-rear direction with respect to the traveling direction of the crushing belt 20 of the holding portion 60 and the holding portion 60 that is substantially parallel to the screen belt 1 and opposed to the crushing belt 20. The inclined portions 61 and 62 are provided, and are disposed above the crushing belt 20 so as to face the crushing belt 20.

  In attaching the plate G, the front and rear ends thereof may be attached to the support members 21 and 22 that support the crushing belt 20, or may be attached to other locations.

  A predetermined gap is provided between the holding portion 60 of the plate body G and the screen belt 1, but the gap length is arbitrarily determined in consideration of the size of soil to be crushed. That's fine. In practice, it is preferable that the interval length can be changed, and this improves the versatility of the debris separator D1.

  In the debris separating apparatus D1 in another embodiment configured as described above, as shown in FIG. 10, when excavated soil W mixed with debris is conveyed upward in FIG. On the way, the excavated soil W enters between the crushing belt 20 and the screen belt 1, and is sandwiched between the crushing belt 20 and the screen belt 1, so that the lump in the excavated soil W is crushed and the above-mentioned distance between the screen belts 1. When it becomes a size of L or less, it will fall downward, but since the crushing belt 20 is restricted from moving upward by the plate body G, the clot that exceeds the predetermined interval is forcibly crushed. By being compressed and sandwiched between the belt and the screen belt 1, the lump in the excavated soil W is forcibly crushed and falls below the interval L of the screen belt 1 and falls downward.

  Therefore, even in the debris separator D1 in this other embodiment, the crushing belt 20 is prevented from being lifted by hard soil, and the soil is prevented from passing through without being crushed. Is possible.

  In the above, the plate body G is set to be crushed in a stationary state with respect to the screen belt 1, but for example, a spring for biasing the plate body G toward the screen belt 1 side, An elastic body is provided so that the vertical movement of the plate body G is allowed to some extent, or as shown in FIG. 11, the vertical movement of the plate body G is allowed to some extent by connecting one end as a free end and hinged at the other end. By doing so, the crushing belt 20 can be urged toward the screen belt 1, so that the soil can be forcibly crushed while suppressing the lifting of the crushing belt 20, and the predetermined interval that cannot be crushed is also obtained. Even if the above stone is sandwiched between the crushing belt 20 and the screen belt 1, the plate body G moves upward against the spring or the like, so that the passage of the stone can be allowed. 1 and crushing belt 20 The stone is caught it is possible to avoid a situation in which hinders the operation of the screen band 1 between.

  This is the end of the description of the embodiment of the present invention, but the scope of the present invention is of course not limited to the details shown or described.

It is a front view of the debris separation apparatus in one embodiment. It is a perspective view of the debris separator in one embodiment. It is a figure which shows the state which mounted the debris separation apparatus in one Embodiment in the loading platform of a truck. It is a perspective view which shows a part of screen strip in one Embodiment. It is a perspective view which shows a part of crushing belt in one Embodiment. It is a figure which shows the state which is excavating soil with the debris separator in one Embodiment. (A) is the crushing belt enlarged view in the modification of one Embodiment provided with protrusion. (B) is the arrow line view seen from A direction of the crushing belt in the modification of one Embodiment provided with protrusion. It is the arrow view seen from the B direction of the crushing belt in the modification of one embodiment. It is a front view of the debris separation apparatus in other embodiment. It is a figure which shows the state which is excavating soil with the debris separator in other embodiment. It is a figure which shows the state which is excavating soil with the debris separation apparatus in the modification of other embodiment.

Explanation of symbols

1 Screen band 2, 3, 32, 33 Frame 4, 5 Rotating shaft 6 Sprocket 7 Hopper 11, 23 Chain belt 12, 24 Connecting shaft 20 Crushing belt 21, 22 Support member 25 Protrusion a, b Link B Belt conveyor C Conveyor D Debris separator F Heavy object G as suppression means Plate body as suppression means

Claims (6)

From a conveyor having a screen belt for transporting debris, a crushing belt that supports both ends of the front and rear in the transport direction of the conveyor and is suspended above the conveyor and breaks the soil transported by the screen belt, and the conveyor A debris separating apparatus comprising: a belt conveyor for conveying falling soil; and a suppressing means for suppressing upward movement of the crushing belt. The debris separating apparatus according to claim 1, wherein the suppressing means is a heavy object attached to the upper surface of the crushing belt with a predetermined interval. The debris separating apparatus according to claim 1, wherein the restraining means is a plate disposed above the crushing belt at a predetermined interval with respect to the screen belt. The screen belt is a pair of chain belts wound around drive sprockets provided at both ends of the conveyor, and a plurality of screen belts spanned between the link shafts of each chain belt with a predetermined interval in the transport direction of the screen belt. The crushing belt includes a pair of chain belts and a plurality of connecting shafts spanned between the shafts of the links in each chain belt. The debris separation device according to any one of claims 1 to 3, wherein the debris separation device is set shorter than the interval between the connecting shafts in the belt. The debris separating apparatus according to any one of claims 1 to 4, wherein the crushing belt is provided with a plurality of protrusions protruding toward the screen belt. The debris separating apparatus according to claim 5, wherein a heavy object is attached above the protrusion.

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