JP6577621B2 - Quantitative supply system and quantitative supply device - Google Patents

Description

  The present invention relates to a quantitative supply system using a quantitative supply device that supplies a fixed amount of earth and sand (excavated earth and sand) excavated with a clamshell, a backhoe, or the like to a belt conveyor or the like.

  Conventionally, as this type of quantitative supply device, as shown in FIG. 14, there is a screw-type quantitative supply device in which a screw that is rotationally driven is disposed at the bottom of a vessel (steel box, container) (bottom portion). Patent Document 1 and the like for a configuration example of a supply device provided with a screw.

  Such a conventional quantitative supply device is a belt installed below by passing (falling) quantitatively the earth and sand thrown into the vessel from above by a clamshell, a backhoe or the like by rotating the screw. It is configured to supply quantitatively on a conveyor.

JP 2000-179003 A

Such a screw type quantitative supply device has the following problems.
<When earth and sand is gravelly soil>
When the earth and sand supplied by the backhoe etc. into the vessel of the screw type quantitative supply device is gravelly soil, in the method of quantitatively supplying gravelly soil downward by rotating the screw, the screw pitch (arrangement interval), etc. Determines the diameter of gravel that can be handled. For this reason, there is a problem that not only a fixed amount of gravel can be discharged but also a failure such as clogging of earth and sand may be caused if gravel having a diameter larger than the corresponding gravel diameter is mixed.

<When earth and sand is viscous soil>
In the screw type quantitative supply device, when the earth and sand supplied into the vessel are discharged (extruded) from the screw, it is discharged while applying a deformation load to the earth and sand, so that the viscosity is increased in the case of clay. And the earth and sand discharged from the screw (extruded) is pushed to the discharge port of a predetermined opening area, but since it is a narrow closed space, such an increase in viscosity causes a fixed amount of discharge. In addition to being unable to do so, there is a problem of causing sticking to the inner surface of the apparatus and clogging.

The present invention has been made in view of such circumstances, and suppresses the occurrence of clogging regardless of the particle size and properties of gravel and clay soils, etc., while having a relatively simple and low-cost configuration. It is another object of the present invention to provide a quantitative supply system and a quantitative supply device capable of quantitatively supplying soil and sand accurately over a long time.

For this reason, the quantitative supply system according to the present invention is:
A quantitative supply device for quantitatively supplying an object to be supplied containing soil or sand to a downstream process,
A vessel with an open bottom;
A horizontal plate-like element on which the vessel is placed;
A horizontal movement mechanism for horizontally moving the vessel on the plate-like element;
A discharge opening adjacent to the plate-like element;
With
By the horizontal movement mechanism, said vessel in Rukoto moved horizontally relative to the plate-like element while controlling the horizontal movement velocity, and the bottom of the vessel, the overlapping portion of the discharge opening, the inlet of the vessel While equipped with a quantitative supply device that allows an object to fall freely and continuously and quantitatively supply a predetermined amount per unit time ,
A belt conveyer that receives and conveys the material to be supplied supplied from the quantitative supply device;
To-be-supplied material loading place for carrying out the to-be-supplied material conveyed by the belt conveyor to the outside,
With
A supply object detection state detecting means for detecting a supply condition of the supply object into the vessel;
A belt conveyor operation status detection means for detecting the operation status of the belt conveyor;
A supply accumulation state detection means for detecting a supply state of the supply in the supply loading place;
With
When the supply object into the vessel is loaded more than a predetermined amount by the supply object carry-in status detection means, the horizontal movement of the vessel is started,
When it is detected by the belt conveyor operation state detection means that the belt conveyor has stopped, it performs control to stop the horizontal movement of the vessel,
When the supply accumulation state detection means detects that the supply has accumulated more than a predetermined amount at the supply loading place, the horizontal movement of the vessel and the drive of the belt conveyor are stopped. And

In addition, the quantitative supply system according to the present invention is:
A quantitative supply device for quantitatively supplying an object to be supplied containing soil or sand to a downstream process,
A vessel with an open bottom;
A horizontal plate-like element on which the vessel is placed;
A horizontal movement mechanism for horizontally moving the vessel on the plate-like element;
A discharge opening adjacent to the plate-like element;
With
By the horizontal movement mechanism, said vessel in Rukoto moved horizontally relative to the plate-like element while controlling the horizontal movement velocity, and the bottom of the vessel, the overlapping portion of the discharge opening, the inlet of the vessel While equipped with a quantitative supply device that allows an object to fall freely and continuously and quantitatively supply a predetermined amount per unit time ,
A belt conveyer that receives and conveys the material to be supplied supplied from the quantitative supply device;
To-be-supplied material loading place for carrying out the to-be-supplied material conveyed by the belt conveyor to the outside,
With
A belt conveyor operation status detection means for detecting the operation status of the belt conveyor;
A supply accumulation state detection means for detecting a supply state of the supply in the supply loading place;
With
When it is detected by the belt conveyor operation state detection means that the belt conveyor has stopped, it performs control to stop the horizontal movement of the vessel,
When the supply accumulation state detection means detects that the supply has accumulated more than a predetermined amount at the supply loading place, the horizontal movement of the vessel and the drive of the belt conveyor are stopped. And
Moreover, the quantitative supply device according to the present invention is:
A quantitative supply device for quantitatively supplying an object to be supplied containing soil or sand to a downstream process,
A vessel with an open bottom;
A horizontal plate-like element on which the vessel is placed;
A horizontal movement mechanism for horizontally moving the vessel on the plate-like element;
A discharge opening adjacent to the plate-like element;
With
By horizontally moving the vessel with respect to the plate-like element while controlling the horizontal movement speed by the horizontal movement mechanism, a supply object in the vessel is obtained from the overlapping portion of the bottom surface of the vessel and the discharge opening. Is allowed to fall freely, and is continuously supplied in a predetermined amount per unit time.

According to the present invention, while having a relatively simple and low-cost configuration, the occurrence of clogging and the like is suppressed over a long period of time, regardless of the particle size or properties of sediments such as gravelly soil and viscous soil. It is possible to provide a quantitative supply system and a quantitative supply device that can accurately and accurately supply earth and sand.

BRIEF DESCRIPTION OF THE DRAWINGS It is the perspective view which showed schematically the whole system using the fixed quantity supply apparatus which concerns on one embodiment of this invention (initial position of a vessel: step 1). It is a perspective view which shows roughly the whole system using the fixed_quantity | quantitative_assay supply apparatus which concerns on embodiment same as the above (during the supply of earth and sand from a discharge opening, an outward path, step 2). It is a perspective view which shows roughly the whole system using the fixed quantity supply apparatus which concerns on embodiment same as the above (horizontal movement direction end point position: step 3). It is a perspective view which shows roughly the whole system using the fixed-quantity supply apparatus which concerns on embodiment same as the above (in the middle of the return to an initial position, a return path, step 4). It is a perspective view which shows roughly the whole system using the fixed quantity supply apparatus which concerns on embodiment same as the above (the initial position of a vessel, a return path: Step 5). It is the figure which looked at the fixed_quantity | feed_rate supply apparatus in the initial position of FIG. 1 toward the upstream from the sediment conveyance direction downstream side of the belt conveyor. It is the perspective view which looked at the fixed_quantity | feed_rate supply apparatus in the initial position of FIG. 1 from the some upwards toward the downstream from the sediment conveyance direction of a belt conveyor. (A) is the figure which looked at the fixed_quantity | feed_rate supply apparatus which concerns on embodiment same as the above from the sediment conveyance direction upstream side of a belt conveyor toward the downstream side, (B) is the A arrow directional view (plan view) of (A). ). (A) is a C arrow line view (right side surface) figure of FIG. 8 (A), (B) is a C arrow line view of FIG. 8 (A). (A) is a front view of the vessel which concerns on embodiment same as the above, (B) is a top view of (A). It is a figure for demonstrating an example of the effect of the partition plate arrange | positioned at the vessel which concerns on embodiment same as the above. It is a figure which shows an example of the attachment example of the outflow suppression board attached to the vessel which concerns on embodiment same as the above. It is a figure which shows the example of application to the reverse driving method in the large-scale underground excavation of the large-scale building construction of the fixed quantity supply apparatus which concerns on embodiment same as the above. It is a figure which shows an example of the conventional screw type fixed supply apparatus.

  DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments according to the present invention will be described with reference to the accompanying drawings. The present invention is not limited to the embodiments described below.

  The fixed amount supply apparatus according to the present embodiment temporarily stores the excavated earth and sand before being transferred to the belt conveyor or the like when the earth and sand excavated with a clamshell or a backhoe is horizontally transferred to the belt conveyor or the like. It is a device that intermittently supplies (discharges) the amount to the belt conveyor.

  Problems previously described due to the screw mechanism and narrow discharge port in the conventional screw-type quantitative supply device (clogging of the screw mechanism in the case of gravelly soil, occurrence of adhesion and clogging due to increased viscosity in the case of viscous soil In order to solve this problem, the present inventors have repeated various experiments and researches. As a result, the present inventors use a vessel that does not have a narrow discharge port, that is, has no bottom plate (open bottom). At the same time, the present inventors have invented an apparatus capable of accurately supplying a fixed amount over a long period of time without causing the adhesion or clogging of earth and sand by horizontally moving the entire vessel without using a screw mechanism.

  Specifically, the fixed-quantity supply apparatus 1 according to the present embodiment includes a vessel (a frame having only a box, a container, and a side wall) 10 having an open top surface and no bottom plate (open bottom surface) as shown in FIGS. As shown in FIG. 7, it is placed on a plate-like element (surface plate, horizontal plate, bottom plate) 20 arranged substantially horizontally, and this vessel 10 is placed on the plate-like element 20 in FIGS. 6, by moving horizontally in the horizontal movement direction shown in FIG. 7, the vessel is moved onto the discharge opening 30 adjacent to the plate-like element 20, and the bottom opening 10 </ b> A of the vessel 10, the discharge opening 30, Is overlapped when viewed from the vertical direction, the sediment in the vessel 10 is quantified and continuously dropped by its own weight from the overlapped portion (discharge opening 30), and the sediment is quantitatively supplied to the belt conveyor 50 installed below. It is the composition to do.

  According to the quantitative supply device 1 having such a configuration, the amount of sediment fall from the discharge opening 30 (quantitative supply amount) by controlling (adjusting) the moving speed (horizontal moving speed) of the vessel 10 with respect to the plate-like element 20. ) Can be controlled (adjusted) as desired.

  Moreover, according to the fixed amount supply apparatus 1 which concerns on this Embodiment, since it is the structure which can make the opening area of bottom face opening 10A of the vessel 10 and the discharge opening 30 large size, gravel with a large diameter is contained in earth and sand. Even if it is, it is possible to accurately supply a quantitative amount over a long period of time without causing clogging.

  Furthermore, unlike conventional screw-type quantitative supply devices, no deformation load is applied to the earth and sand, so even if it is viscous earth and sand, it does not cause adhesion or clogging, and it takes a long time. Accurate quantitative supply is possible.

  More specifically, the quantitative supply (quantitative discharge) device 1 according to the present embodiment is a Vessel (opened at the bottom) that has an open top surface and no bottom plate, as shown in FIGS. A plate-like element (a surface plate, a horizontal plate, a bottom plate) in which a box, a container, a side wall frame 10 is installed substantially horizontally at a predetermined height from a reference position (ground, floor, work plane, etc.) 20 is mounted.

  The vessel 10 is placed on the plate-like element 20 so as to be horizontally movable. For example, as shown in FIGS. 1, 6, 7, 9A, etc., the vessel 10 is parallel to the horizontal movement direction. Linear rack gears 101 extending in the horizontal direction are attached to both side surfaces.

  A pinion gear 102 meshed with the rack gear 101 is rotatably installed on the plate-like element 20 via a bearing mechanism or the like, and is rotated by a motor 103 (for example, an electric motor or a hydraulic drive motor). The force is configured to be transmitted to the pinion gear 102 via a chain (or belt) 104.

  Therefore, when the motor 103 is rotated, the rotation is transmitted to the pinion gear 102 via the chain 104, and the rack gear 101 and the vessel 10 engaged with the pinion gear 102 extend in the extending direction of the rack gear 102 (horizontal movement in FIG. Direction).

  As shown in FIGS. 8 and 9 and the like, a rotatable wheel 11 is provided at the bottom of the vessel 10 so that the horizontal movement can be smoothly performed, and the movement of the wheel 11 is guided. A guide rail 21 is provided on the upper surface of the plate-like element 20 in a convex shape along the horizontal movement direction of the vessel 10. The wheel 11 can be configured with a hook for engaging with the side surface of the guide rail 21 to prevent the wheel from being removed.

  When the vessel 10 is moved horizontally, it is moved in the direction of the arrow in FIG. 1 (horizontal movement direction). A discharge opening 30 is opened on the downstream side of the movement direction, and the discharge opening 30 is arranged below the discharge opening 30. It is comprised so that the installed belt conveyor 50 may face.

  In the vicinity of both sides parallel to the horizontal movement direction of the discharge opening 30, as shown in FIGS. 8, 9, etc., a plate-like element 20 with the discharge opening 30 cut out and a guide rail 21 are extended. As a result, the vessel 10 is guided by the wheels 11 and the guide rails 21, and can smoothly move horizontally to the horizontal movement direction end point position (position in FIG. 3) through the discharge opening 30.

  1, 6, and 7 (the initial position of the vessel 10, the original position), the vessel 10 to which earth and sand are supplied is moved horizontally along the guide rail 21 in the horizontal movement direction of FIG. 1. The bottom opening 10A of the vessel 10 and the discharge opening 30 overlap when viewed from the vertical direction, and the earth and sand in the vessel 10 freely falls downward and is supplied to the belt conveyor 50 from the overlapping portion. (See the state in FIG. 2 and the like). Thus, the earth and sand supplied in a fixed amount per hour to the belt conveyor 50 is conveyed in the direction of earth and sand conveyance in FIG. 1 and processed in a downstream process.

  By controlling the horizontal moving speed of the vessel 10 as desired, the supply amount (discharge amount) per unit time of earth and sand to the belt conveyor 50 can be appropriately controlled.

  When the vessel 10 reaches the position shown in FIG. 3 (horizontal movement direction end position), all of the earth and sand in the vessel 10 falls, and the supply of earth and sand from the vessel 10 to the belt conveyor 50 is completed.

  In the quantitative supply apparatus 1 according to the present embodiment, when the earth and sand in the vessel 10 are all discharged and the movement of the vessel 10 to the end position in the horizontal movement direction in FIG. (Not shown) reverses the rotation direction of the motor 103, returns the vessel 10 to the original position in FIG. 1, and carries new earth and sand into the vessel 10 at the original position in FIG. Again, the process of horizontally moving the vessel 10 toward the horizontal movement direction end point in FIG. 3 is repeated.

  As described above, the quantitative supply device 1 according to the present embodiment repeats the supply of the earth and sand to the belt conveyor 50 using the horizontal movement (reciprocating movement) of the vessel 10, so that the earth and sand can be supplied at a predetermined amount per hour. A fixed amount can be supplied.

  Hereinafter, the sediment discharge (quantitative supply) processing of the earth and sand by the quantitative supply device 1 according to the present embodiment will be described more specifically.

<Step 1>
In step 1, the quantitative supply device 1 according to the present embodiment at the positions shown in FIGS. 1, 6, and 7 (the initial position and the original position of the vessel 10) 20 using a clam shell, a backhoe, etc., and excavated sediment (excavated sediment (or excavated sediment that has been excavated elsewhere and transported by a dump vehicle, etc.) ).

  In the fixed amount supply apparatus 1, a laser and a light receiver that are irradiated in a horizontal direction at a predetermined level whether or not the level (height) of earth and sand carried into (injected into) the vessel 10 has reached a predetermined level (full level). It is detected (detected) by a level sensor (or area sensor) using the like.

  When it is detected that the level (height) of the earth and sand has reached a predetermined level, the control device starts driving the motor 103 (or by an ON signal input by the operator), and the horizontal of the vessel 10 is started. The movement (outward path) is started (start of quantitative supply operation).

<Step 2>
When the vessel 10 moves in the horizontal movement direction from the position of FIG. 1, as shown in FIG. 2, the bottom opening 10 </ b> A of the vessel 10 and the discharge opening 30 formed by cutting out the plate-like element 20 overlap each other. (Overlap) is started, and the earth and sand in the vessel 10 falls freely from this overlapping portion and is supplied onto the belt conveyor 50 below. In other words, the earth and sand in the vessel 10 on the plate-like element 20 falls downward through the discharge opening 30 and is transferred onto the belt conveyor 50.

  Here, since the supply amount (discharge amount) of earth and sand to the belt conveyor 50 depends on the horizontal movement speed of the vessel 10, in the quantitative supply device 1 according to the present embodiment, the horizontal movement speed (specifically, In other words, by controlling the rotation speed of the motor 103, the supply amount (discharge amount, fall amount) of earth and sand can be controlled to a desired value.

  Moreover, the partition plate 12 extended in the direction substantially orthogonal to a horizontal movement direction is installed in the vessel 10 so that the supply amount (discharge amount, fall amount) per hour of earth and sand can be kept substantially constant. Thus, it is possible to suppress a large amount of earth and sand from falling at once (see FIG. 11).

  The number and layout of the partition plates 12 can be appropriately changed according to the required amount of earth and sand supply (discharge amount, fall amount).

  Moreover, the partition plate 12 does not partition completely over the height direction of the vessel 10, for example, as shown in FIGS. 10A and 11, the height from the upper end (or lower end) of the vessel 10. By extending to the middle of the direction, we can expect the effect of suppressing the lateral flow of the sediment and the effect of increasing the internal frictional resistance of the sediment, and can effectively suppress the massive fall of the sediment at once, Therefore, the supply amount (discharge amount, fall amount) of earth and sand per hour can be kept good and constant.

More specifically, as shown in FIGS. 10 (A) and 10 (B), a vessel 10 having a size of width 2.5 m × length 4.5 m × height 1.0 m is used as a crumb. When receiving 3 m ³ of earth and sand discharged from the bucket at a time, the inside of the vessel 10 is divided into three equal parts by two divider plates 12A and 12B along the horizontal movement direction, and the divider plate 12A is separated from the tip of the vessel 10. By arranging the partition plate 12B at a position of 1800 mm from the partition plate 12A at a position of 1350 mm, the sediment is stabilized on the belt conveyor 50 from the vessel 10 that allows the sediment to freely fall while horizontally moving on the discharge opening 30. Can be quantitatively supplied.

  Further, by setting the lower end of the partition plate 12 (12A, 12B) to the middle in the height direction from the upper end of the vessel 10 (specifically, at a height position of 500 mm from the upper end of the vessel 10), FIG. As shown in Fig. 2, it can be expected to suppress the lateral flow of sediment and increase the internal frictional resistance of the sediment, and can effectively suppress a large amount of sediment at a stretch. The supply amount (discharge amount, fall amount) can be kept well and constant.

<Step 3>
When the vessel 10 is further moved horizontally from the state of step 2 (position of FIG. 2), the overlapping (overlap) area of the bottom opening 10A of the vessel 10 and the discharge opening 30 increases accordingly. According to the newly increased overlapping area, new earth and sand will be freely dropped onto the belt conveyor 50. When the vessel 10 reaches the position shown in FIG. 3 (horizontal movement direction end position), the earth and sand in the vessel 10 is reached. Fall, and the supply of earth and sand to the belt conveyor 50 is completed (end of the outward travel of the horizontal movement of the vessel 10).
In step 3, the limit switch detects that the vessel 10 has reached the end point in the horizontal movement direction in FIG. 3, stops the rotation of the motor 103, and stops the horizontal movement of the vessel 10.

<Step 4> (Return to original position (initial position))
Subsequent to Step 3, in Step 4, the rotation direction of the motor 103 is reversed, and the vessel 10 is moved from FIG. 3 to the original position (initial position) in FIG. 1 at a relatively high speed (see FIG. 4, horizontal movement). Return trip).

  At this time, since the earth and sand in the vessel 10 has already been discharged, when it is moving horizontally from step 1 to step 3 (from step 1 to step 3) (quantitative supply: when the vessel 10 is moved horizontally) It is possible to move at a speed (for example, 10.0 m / min) faster than the forward path (for example, 6.0 m / min). Thereby, it can contribute to reduction of cycle time.

  8, 9, and 10, the vessel 10 is placed on the guide rail 21 via the wheel 11. However, as shown in FIG. 12, the bottom end of the side wall of the vessel 10 is used. A predetermined gap (for example, about 50 mm) is formed between 10 </ b> B and the upper surface of the plate-like element 20. This is because when the side wall lower end 10B of the vessel 10 is brought into direct contact with the upper surface of the plate-like element 20, the metals come into contact with each other and wear and frictional resistance increase, thereby hindering smooth horizontal movement of the vessel 10.

  However, since the earth and sand may flow out of the vessel 10 from the predetermined gap, the outflow restraint plate (outflow restraining member) 13 is disposed on the side wall of the vessel 10 (both side walls parallel to the horizontal movement direction) so that the earth and sand do not flow out. 10C and 10D, and the rear end wall 10E and the front end wall 10F on the upstream side in the horizontal movement direction) (both side walls 10C and 10D, and the rear end wall 10E and the front end wall 10F on the upstream side in the horizontal movement direction) See FIG. However, the attachment of the outflow suppression plate (outflow suppression member) 13 to the front end wall 10F can be omitted.

  The outflow suppression plate 13 is a substantially rectangular horizontally elongated plate-like element extending along the side wall lower end 10 </ b> B, and its lower end makes light contact with the upper surface of the plate-like element 20 or a minute gap. Is attached to the vessel 10.

  Since the lower end of the outflow suppression plate 13 is shaved due to wear or the like, the mounting bolt is loosened and the outflow suppression plate 13 is moved downward by an elongated mounting hole opened on the outflow suppression plate 13 side. It can be set as the attachment method which can be pulled out (it can make the lower end of the outflow suppression board 13 approach the upper surface side of the plate-shaped element 20 easily) (refer FIG. 12).

  As a material for the outflow suppression plate 13, for example, a polymer material such as plastic or silicone can be used, and it is preferable to employ a high wear-resistant polymer material having self-lubricating properties. In an experiment in which sand with severe wear of the outflow suppression plate 13 was used as a supply object, it was confirmed that plastic or silicone resin showed better wear resistance than fluororesin or polyacetal (POM).

  However, the material of the outflow suppression plate (outflow suppression member) 13 is not limited to a polymer material, and may be a resin material such as rubber. As an example of rubber specifications, chloroprene rubber (CR, JIS K 6380 (corresponding number GJH6363), specific gravity: about 1.5, hardness: Shore A 65) can be cited as an example.

<Step 5>
In the subsequent step 5, when the control device detects that the vessel 10 has returned to the initial position (original position) shown in FIG. 5 (FIG. 1) using a limit switch or the like, the control device stops the rotation of the motor 103, 10 is stopped at the initial position (original position) of FIG. 5 (FIG. 1).

And in this state, the work which carries in earth and sand again into the vessel 10 with a clamshell or a backhoe is performed again. The work of carrying the earth and sand into the vessel 10 can be performed by automatic control or by manual operation of the operator.
In the present embodiment, the above steps 1 to 5 are repeated, so that the excavated earth and sand is fixedly supplied to the belt conveyor 50 and downstream process.

  As described above, according to the quantitative supply device 1 according to the present embodiment, a vessel without a bottom plate (open bottom) is used, and the entire vessel is moved horizontally without using a screw mechanism. Since the amount of earth and sand is quantitatively supplied to the downstream process by passing over the opening, it is possible to accurately and quantitatively supply over a long period of time without causing the adhesion or clogging of conventional earth and sand. This can contribute to automation of the quantitative supply device.

  Further, according to the quantitative supply device 1 according to the present embodiment, when it is detected that the introduction (carrying) of earth and sand into the vessel 10 is completed at the initial position (original position), the vessel 10 is automatically leveled. When it is detected that the vessel 10 has reached the end position of the horizontal movement, and the vessel 10 is empty, the fixed amount of earth and sand is supplied from the discharge opening 30 to the belt conveyor 50 (corresponding to the forward path of the reciprocating horizontal movement). Since the vessel 10 is folded back in the opposite direction and returned to the initial position (original position) by horizontal movement (corresponding to the return path of the reciprocating horizontal movement), the horizontal movement of the vessel 10 can be automatically controlled. Therefore, automation can be promoted, which can contribute to labor saving.

  Further, according to the quantitative supply device 1 according to the present embodiment, by controlling (adjusting) the moving speed (horizontal moving speed) of the vessel 10 with respect to the plate-like element 20, adhesion or clogging of conventional earth and sand is possible. It is possible to easily control (adjust) the amount of earth and sand falling from the discharge opening 30, that is, the fixed amount of supply, without causing the occurrence of the above.

  Further, according to the quantitative supply device 1 according to the present embodiment, unlike the conventional screw-type quantitative supply device, since no deformation load is applied to the sediment, even if it is a viscous sediment, it adheres. Without causing the occurrence of clogging or clogging, it is possible to accurately supply a quantity over a long period of time.

<Applying to reverse construction method in large-scale underground excavation for large-scale construction work>
Here, the quantitative supply (discharge) device 1 according to the present embodiment can be used, for example, in a reverse driving method (quantitative supply system) in large-scale underground excavation of large-scale construction work as shown in FIG.

  In the case of the reverse driving method, the excavation opening is limited by the target (target) building, so the earth and sand excavated by a clam shell (clam bucket) etc. in the basement is grounded by the overhead crane (the floor where it is excavated) It is an efficient method for carrying out sediments that are lifted to a higher floor) and are always stocked at the place where sediments are loaded and loaded (supplied materials loading site).

  At that time, as shown in FIG. 13, after carrying the excavated earth and sand from the clamshell 210 into the vessel 10 of the metering discharge device 1 on the ground (the floor above the floor where the earth is excavated), The excavated earth and sand are quantitatively transferred to the belt conveyor 50, transported horizontally by the belt conveyor 50, and then stocked in the earth and sand loading / unloading place (supplied material loading place) 300. The earth and sand unloading / loading place 300 is a place for loading earth and sand into a dump truck or the like in order to carry the earth and sand to the outside.

  In FIG. 13, the earth and sand unloading / loading place 300 is installed on the floor below the installation floor of the belt conveyor 50, but is not limited thereto, and can be installed on the same floor.

  In the present embodiment, as shown in FIG. 13, an overhead crane 200 to which a clamshell (clam bucket) 210 is attached is provided on a ceiling portion on the second floor or higher (the third floor in FIG. 13), for example, a guide rail. It is installed so that it can be moved horizontally along the line.

And the fixed supply (discharge) apparatus 1 and the belt conveyor 50 of excavated earth and sand are arrange | positioned at the floor part of the 2nd floor above the ground.
The earth and sand unloading / loading place 300 is installed on the first floor (the ground level).

Here, an example is described about the specification of each part which concerns on this Embodiment. However, the present invention is not limited to the example (specifications, dimensions, etc.).
The vessel 10 is, for example, a vessel 10 having an inner width of 2.5 m, a length of 4.5 m, and a height of 1.0 m, and can accommodate 3 m ³ of earth and sand discharged from the clam bucket 210 at a time. The size is set as possible.
Moreover, the partition plate extended in the direction substantially orthogonal to a horizontal movement direction is arrange | positioned inside the vessel over the inner space of Bessets.

The belt conveyor 50 has a width of 900 mm and a conveyance capacity of about 200 m ³ / h.

  The horizontal movement speed of the vessel 10 is 6.0 m / min at the time of discharge (when the earth and sand is supplied to the belt conveyor) and the return to the original position (initial position) from the dimensions of the vessel 10 and the conveying capacity of the belt conveyor 50. The time is 10.0 m / min.

From the above, the earth and sand supply capacity (discharge capacity) of the quantitative supply apparatus 1 according to the present embodiment is 150 m ³ / h, and the required time is 1.2 minutes per cycle.

  In such a quantitative supply system, by detecting the operation status of the excavator (or the status of carrying earth and sand into the vessel 10) by a supply status detection means such as a distance sensor (or area sensor), In accordance with the operation status of the excavator (or the status of carrying sand and sand into the vessel 10), it is possible to automatically control the excavated sediment quantitative supply device 1 to start the quantitative supply.

  Further, in such a quantitative supply system, the belt conveyor 50 is stopped by detecting whether or not the belt conveyor 50 has stopped by detecting the belt conveyor 50 operating state by means of a belt conveyor operating state detector such as a current sensor. In such a case, it is possible to control the fixed quantity supply device 1 to automatically stop in conjunction with it.

  Further, in such a quantitative supply system, the sediment accumulation status (supplied material deposition status) at the sediment loading location (supplied material loading location) 300 is detected by a material accumulation status detection means such as a distance sensor (or area sensor). By doing so, before the sediment accumulation place (the vessel on the ground in FIG. 13 or the like) overflows with sediment (when the material to be fed is accumulated more than a predetermined amount), the quantitative supply device 1 and the belt conveyor 50 are automatically driven. Control to stop can be performed.

As described above, according to the quantitative supply system employing the quantitative supply device 1 according to the present embodiment, it is possible to save labor in underground excavation work.
Further, since it becomes possible to discharge soil quantitatively, automation is facilitated.
In addition, the advancement of automation makes it possible to save labor.
Moreover, since the earth and sand can be transported continuously, the construction period can be shortened.
In addition, since it can handle large diameter gravel, the risk of troubles such as clogging is reduced.

A configuration example of the horizontal movement mechanism 100 of the vessel 10 according to the present embodiment will be described.
As one of the horizontal movement mechanisms, the horizontal movement mechanism 100 using the rack gear and the pinion gear has been described above. However, the horizontal movement mechanism 100 is not limited thereto, and the vessel 10 can be moved horizontally on the plate-like element 20 by the following mechanism, for example. .

<Horizontal movement mechanism by pulling winch wire>
As another example of the horizontal movement mechanism of the vessel 10, two winches installed on the longitudinal extension lines (the upstream side and the downstream side in the horizontal movement direction) of the plate-like element 20 on which the vessel 10 is placed. It is possible to move horizontally (reciprocating horizontally) by alternately pulling.
The wire of the winch is attached to the vessel 10, and the vessel 10 is pulled and moved forward (moved to the end point in the horizontal movement direction) by winding the wire with the winch. When retreating (returning to the initial position), the advancement winch is opened, and the retraction winch, like the advancement, pulls the vessel 10 by winding the wire and retracts (returns to the initial position). 10 can be reciprocated horizontally on the plate-like element 20.

<Horizontal movement mechanism using cylinder stroke of hydraulic jack>
As another horizontal movement mechanism of the vessel 10, the vessel 10 is moved forward by applying hydraulic pressure to a long stroke jack fixed in a direction that can be expanded and contracted horizontally on the plate-like element 20 on which the vessel 10 is placed ( To the end point position in the horizontal movement direction). Since the vessel 10 is fixed to the tip of the extending cylinder, the vessel 10 can be moved forward (moved to the end point in the horizontal movement direction) on the plate-like element 20 as the cylinder is extended. The backward movement (return to the initial position) allows the vessel 10 to move backward (return to the initial position) along with the movement of the cylinder by reducing the cylinder.

<Horizontal moving mechanism using expansion and contraction of jack using worm gear>
As another horizontal movement mechanism of the vessel 10, the long stroke worm jack fixed on the plate-like element 20 on which the vessel 10 is placed is rotated by a geared motor to move forward (moves to the end position in the horizontal movement direction). ). Since the vessel 10 is fixed to the tip of the extending screw shaft, the vessel can move forward (move to the end point in the horizontal movement direction) as the screw shaft extends. The backward movement (return to the initial position) allows the vessel 10 to move backward (return to the initial position) along with the movement of the screw shaft by reducing the screw shaft.

  However, the horizontal movement mechanism of the vessel according to the present invention is not limited to these, and any other mechanism can be adopted as long as it can move the vessel 10 horizontally on the plate-like element 20. It is.

  In addition, there is a possibility that earth and sand may adhere to the vessel 10 and fall as a lump from the discharge opening 30 and hinder quantitative supply, or earth and sand may adhere firmly to the upper surface of the plate-like element 20 and the smooth vessel 10 Since there is a risk of hindering horizontal movement or promoting the wear of the outflow suppression plate 13, the vessel 10 or the plate-like element 20 can be vibrated by a vibrator or the like to suppress adhesion of earth and sand.

  In the present embodiment, the material to be supplied is described as earth and sand. However, the present invention is not limited to this, and the material to be supplied is soil or sand, or a mixture of one of these with another substance. be able to.

  The embodiments according to the present invention described above are merely examples for explaining the present invention, and various modifications can be made without departing from the gist of the present invention.

1 Fixed-quantity supply device 10 Vessel (Bessel with open top and no bottom plate (open bottom))
10A Bottom opening 11 Wheel 12 Partition plate 12A Partition plate 12B Partition plate 13 Outflow suppression plate (outflow suppression member)
20 Plate elements (surface plate, horizontal plate, bottom plate)
21 Guide rail 30 Discharge opening 40 Hopper 50 Belt conveyor 101 Rack gear 102 Pinion gear 103 Motor 104 Chain

Claims (3)

A quantitative supply device for quantitatively supplying an object to be supplied containing soil or sand to a downstream process,
A vessel with an open bottom;
A horizontal plate-like element on which the vessel is placed;
A horizontal movement mechanism for horizontally moving the vessel on the plate-like element;
A discharge opening adjacent to the plate-like element;
With
By the horizontal movement mechanism, said vessel in Rukoto moved horizontally relative to the plate-like element while controlling the horizontal movement velocity, and the bottom of the vessel, the overlapping portion of the discharge opening, the inlet of the vessel While equipped with a quantitative supply device that allows an object to fall freely and continuously and quantitatively supply a predetermined amount per unit time ,
A belt conveyer that receives and conveys the material to be supplied supplied from the quantitative supply device;
To-be-supplied material loading place for carrying out the to-be-supplied material conveyed by the belt conveyor to the outside,
With
A supply object detection state detecting means for detecting a supply condition of the supply object into the vessel;
A belt conveyor operation status detection means for detecting the operation status of the belt conveyor;
With
When the supply object into the vessel is loaded more than a predetermined amount by the supply object carry-in status detection means, the horizontal movement of the vessel is started,
A quantitative supply system characterized in that when the belt conveyor operation status detecting means detects that the belt conveyor has stopped, control is performed to stop the horizontal movement of the vessel. A quantitative supply device for quantitatively supplying an object to be supplied containing soil or sand to a downstream process,
A vessel with an open bottom;
A horizontal plate-like element on which the vessel is placed;
A horizontal movement mechanism for horizontally moving the vessel on the plate-like element;
A discharge opening adjacent to the plate-like element;
With
By the horizontal movement mechanism, said vessel in Rukoto moved horizontally relative to the plate-like element while controlling the horizontal movement velocity, and the bottom of the vessel, the overlapping portion of the discharge opening, the inlet of the vessel While equipped with a quantitative supply device that allows an object to fall freely and continuously and quantitatively supply a predetermined amount per unit time ,
A belt conveyer that receives and conveys the material to be supplied supplied from the quantitative supply device;
To-be-supplied material loading place for carrying out the to-be-supplied material conveyed by the belt conveyor to the outside,
With
A belt conveyor operation status detection means for detecting the operation status of the belt conveyor;
A supply accumulation state detection means for detecting a supply state of the supply in the supply loading place;
With
When it is detected by the belt conveyor operation state detection means that the belt conveyor has stopped, it performs control to stop the horizontal movement of the vessel,
When the supply accumulation state detection means detects that the supply has accumulated more than a predetermined amount at the supply loading place, the horizontal movement of the vessel and the drive of the belt conveyor are stopped. Quantitative supply system. A quantitative supply device for quantitatively supplying an object to be supplied containing soil or sand to a downstream process,
  A vessel with an open bottom;
  A horizontal plate-like element on which the vessel is placed;
  A horizontal movement mechanism for horizontally moving the vessel on the plate-like element;
  A discharge opening adjacent to the plate-like element;
  With
  By horizontally moving the vessel with respect to the plate-like element while controlling the horizontal movement speed by the horizontal movement mechanism, a supply object in the vessel is obtained from the overlapping portion of the bottom surface of the vessel and the discharge opening. A fixed quantity supply device characterized in that it is allowed to fall freely and is continuously supplied in a predetermined amount per unit time.