JP6212853B2 - Spill-off control device for granular or massive load - Google Patents

Description

  The present invention relates to a spillage suppression device for a spillage that suppresses a granular or lump load to be spilled on the ground.

  In construction work that performs deep excavation in the underground part surrounded by the retaining wall, a clam shell is used as an excavator, and the earth and sand generated by the excavation are grabbed with a clam shell bucket and discharged to the ground. (Refer to the column of the prior art in Patent Document 1).

JP-A-9-13880

  When the sediment generated by excavation is to be loaded with a clamshell bucket onto the carrier platform of a transport vehicle that is parked near the retaining wall on the ground, the ground between the retaining wall and the platform of the transport vehicle from the gap of the bucket It is easy for sediment to spill and accumulate. In addition, it is difficult to accurately drop the sediment at the loading platform position with the clamshell bucket, so it is easy for the sediment to scatter around the loading platform. To prevent this, the bucket can be opened closer to the excavation area. It becomes a factor that earth and sand spills on the ground between. Since the earth and sand spilled on the ground cause dust and soils the tires of the transport vehicle, it is necessary to prevent the earth and sand from spilling on the ground in this way.

  The present invention has been made in view of the above circumstances, and when loading a granular or lump load such as earth and sand on a loading platform of a transport vehicle with a construction machine, the load is spilled on the ground. It is a problem to suppress.

In order to solve the above-mentioned problem, a load spillage suppression device according to the present invention suppresses a granular or massive load loaded on a carrier bed of a construction vehicle from being spilled on the ground with a bucket of a construction machine. A load spillage suppression device comprising a receiving surface for receiving the load spilled from the bucket, and a load receiving portion configured to move an installation position, the load receiving portion And a pedestal that can be stored in the pedestal so that it can be stored in the pedestal, and is unfolded on the ground in a deployed state so that the tire of the transport vehicle A treadle to be stepped on .

  ADVANTAGE OF THE INVENTION According to this invention, when loading the granular or lump shaped load, such as earth and sand, on the loading platform of a transport vehicle with a construction machine, it can suppress that the load falls on the ground.

It is a top view which shows the excavation construction site which installed the earth and sand spillage fall prevention apparatus which concerns on one Embodiment. It is an elevational view showing the earth and sand spillage fall prevention device. It is an elevation view showing a modification of the earth and sand spillage suppression device. It is an elevational view showing an earth and sand spillage fall prevention device according to another embodiment. It is an elevation view which expands and shows the footboard in the stored state. It is an elevational view showing an earth and sand spillage fall prevention device according to another embodiment.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a plan view showing an excavation work site in which an apparatus for suppressing sediment spillage 10 according to an embodiment is installed. As shown in this figure, at the excavation work site where the earth and sand spillage prevention device 10 is installed, the clamshell 3 located on the ground excavates the underground excavation region 2 surrounded by the retaining wall 1 with the bucket 4 and excavates. The earth and sand generated by the above approach the retaining wall 1 on the ground and are loaded onto the loading platform 6 of the dump truck 5 that is stopped. In this excavation work, in order to carry out deep underground excavation, a clamshell 3 suitable for the excavation is used as an excavator. In addition, various types of clam shells 3 can be used for excavation, and for example, a telescopic clam shell or the like may be used.

  In this excavation work, the dump truck 5 is stopped along the retaining wall 1, and the clamshell 3 is disposed behind the dump truck 5. The clamshell 3 moves the bucket 4 holding the earth and sand from the excavation area 2 to the loading platform 6 of the dump truck 5 by turning the cab 7, opens the bucket 4, and loads the sediment on the loading platform 6.

  In this excavation work, the earth and sand spillage suppression device 10 is installed between the retaining wall 1 and the loading platform 6 of the dump truck 5, and the earth and sand spilled from the bucket 4 is received by the earth and sand receiving plate 12 provided in the earth and sand spillage prevention device 10. Like that. The earth and sand spillage suppression device 10 is configured to be movable at the installation position, and the installation position is moved in accordance with the movement between the excavation position by the clamshell 3 and the stop position of the dump truck 5.

  In this excavation work, a soil cement column wall with H-shaped steel as the core is used as the retaining wall 1, but not limited to this, various kinds of retaining walls can be employed, for example, steel. A retaining wall made of sheet piles may be used.

  FIG. 2 is an elevational view showing the earth and sand spillage suppression device 10. As shown in this figure, the earth and sand spillage suppression device 10 includes an earth and sand receiving plate 12 and a gantry 20 that supports the earth and sand receiving plate 12. The earth and sand receiving plate 12 is made of a metal such as stainless steel and is a rectangular plate in plan view, and the long side in the depth direction in the figure is the same length as the length in the front-rear direction of the loading platform 6 (for example, about 5 m), The short side is set to a length of about several meters.

The earth and sand receiving plate 12 is supported by the gantry 20 at a position higher than the loading platform 6 of the dump truck 5 so as to incline with a gradient that decreases from the excavation region 2 side toward the dump truck 5 side. Further, the end of the earth and sand receiving plate 12 on the dump truck 5 side overlaps with the left end of the loading platform 6 in the figure, and the end of the earth and sand receiving plate 12 on the excavation area 2 side is the right end of the excavation area 2 in the figure. The position of the earth and sand spillage fall prevention device 10 is set so as to overlap vertically.

  The gantry 20 includes a torii-shaped frame portion 21 formed by combining vertical and horizontal steel pipes 21A, 21B, 21C, 21D, a bracket 21E, and the like, a coupling portion 22 that couples the upper portion of the frame portion 21 and the earth and sand receiving plate 12; The frame part 21 and the core material 8 of the retaining wall 1 are connected to prevent the earth spillage falling prevention device 10 from overturning, a plurality of wheels 30 provided below the frame part 21, and the frame part 21. And a weight 40 provided in the.

  In the frame portion 21, two vertical steel pipes 21 </ b> A (hereinafter, referred to as two steel pipes on the left and right sides) 21 </ b> A arranged in parallel in a direction orthogonal to the retaining wall 1 are arranged in two horizontal steel pipes (hereinafter, referred to as two steel pipes). , Which is referred to as two upper and lower steel pipes) 21B. Wheels 30 are attached to the lower part of the steel pipe 21A. This wheel 30 is provided with a jack for height adjustment, and the height position of the steel pipe 21A is adjusted by this jack. The upper and lower steel pipes 21B are respectively coupled to the central part and the lower part of the two left and right steel pipes 21A.

  Of the two left and right steel pipes 21A, the steel pipe 21A on the earth retaining wall 1 side is longer than the other steel pipes 21A by connecting the steel pipe 21C to the upper side, and the upper end of the steel pipe 21A has a triangular shape. The bracket 21E is coupled. The bracket 21E extends from the steel pipe 21A toward the excavation region 2, and a vertical steel pipe 21D is coupled to the tip of the bracket 21E. The upper end of the vertical steel pipe 21D is located above the upper end of the steel pipe 21C. That is, the heights of the upper ends of the steel pipes 21D, 21C, and 21A arranged in the left-right direction in the figure gradually decrease from the left side to the right side in the figure.

  The joint portion 22 includes a plurality of square steel pipes 22A welded to the lower surface of the earth and sand receiving plate 12, a plurality of square steel pipes 22B welded to the plurality of square steel pipes 22A, and three joined to the plurality of square steel pipes 22B. Steel pipe 22C. The plurality of square steel pipes 22 </ b> A are arranged along the longitudinal direction of the earth and sand receiving plate 12 with an interval in the short side direction of the earth and sand receiving plate 12. Further, the plurality of square steel pipes 22B are provided as large pulls in order to suppress deformation of the earth and sand receiving plate 12, and are arranged so as to be orthogonal to the square steel pipes 22A with an interval in the longitudinal direction of the earth and sand receiving plate 12. ing.

  The three steel pipes 22C are respectively coupled to one end, the center part, and the other end of the square steel pipe 22B in the axial direction. Of the three steel pipes 22C, the steel pipe 22C on the excavation area 2 side is coupled to the upper end of the steel pipe 21D, and the central steel pipe 22C is coupled to the upper end of the steel pipe 21C. Here, as described above, since the heights of the upper ends of the steel pipes 21D, 21C, 21A arranged in the left-right direction in the figure are gradually lowered from the left side to the right side in the figure, the earth and sand receiving plate 12 is excavated. It inclines so that it may become low from the area 2 side to the dump truck 5 side.

  The fall prevention unit 23 includes a steel pipe 23 </ b> A coupled to the core material 8 of the retaining wall 1. The steel pipe 23A extends upward from the core member 8, and two upper and lower steel pipes 21B are coupled to the upper part of the steel pipe 23A. Thereby, the fall of the earth and sand spillage suppression device 10 is prevented.

  The weight 40 is a water tank attached to the lower part of the frame portion 21, and the container is filled with water. This water can be used for watering to suppress dust scattering. Here, the weight 40 also prevents the earth and sand spillage suppression device 10 from overturning. In particular, when the earth and sand spillage suppression device 10 is moved, since the connection between the steel pipe 23A of the fall prevention portion 23 and the steel pipe 21B of the frame portion 21 is released, the fall prevention function of the fall prevention portion 23 is not exhibited. The fall prevention effect by the weight 40 is exhibited.

  As described above, in the earth and sand spillage suppression apparatus 10 according to the present embodiment, the earth and sand receiving plate 12 is supported by the gantry 20 configured to be movable in the installation position. Thereby, the earth and sand receiving plate 12 can be moved according to the movement of the excavation position by the clamshell 3 and the stop position of the dump truck 5. Here, the earth and sand receiving plate 12 has an upper surface that receives the earth and sand spilling from the bucket 4 as an inclined surface that becomes lower as it approaches the loading platform 6, and an end of the upper surface on the loading platform 6 side is positioned on the loading platform 6. Further, it is supported by the gantry 20. As a result, the earth and sand spilled from the bucket 4 is received by the upper surface of the earth and sand receiving plate 12 and slides down onto the bed 6 from the upper surface which is an inclined surface. Therefore, it is possible to prevent the earth and sand loaded on the loading platform 6 of the dump truck 5 from being spilled on the ground with the bucket 4 of the clamshell 3. In particular, when the earth and sand that has fallen on the earth and sand receiving plate 12 slides down on the loading platform 6, it is possible to prevent the earth and sand from depositing on the earth and sand receiving plate 12 and scattering of the accumulated earth and sand due to wind or the like.

  Moreover, in the earth and sand spillage fall prevention apparatus 10 which concerns on this embodiment, the several wheel 30 which supports the mount frame 20 so that a movement is possible in the lower part of the mount frame 20 is provided. Thereby, the earth and sand receiving plate 12 can be easily moved in accordance with the movement between the excavation position by the clamshell 3 and the stop position of the dump truck 5.

  In addition, as shown in FIG. 3, you may replace the main frame of the frame part 21 with the building frame member 21F used with a temporary scaffold. In this case, the assembly process of the gantry 20 can be simplified, and the labor required for assembling the gantry 20 can be reduced. Further, the gantry 20 is not limited to assembling a temporary member and may be manufactured by assembling a shape steel by welding or the like.

  FIG. 4 is an elevation view showing the earth and sand spillage suppressing device 11 according to another embodiment. As shown in this figure, the earth and sand spillage suppression device 11 includes a tread plate 50 that can be stored in the gantry 20 in place of the fall prevention unit 23 in the above-described embodiment. The tread plate 50 has a structure in which three rectangular iron plates 51, 52, 53 are connected via hinges 54, 55, and is disposed on the surface of the frame portion 21 on the side of the dump truck 5. The long sides of the iron plates 51, 52, 53 extend in the depth direction in the figure.

  At both ends in the longitudinal direction (depth direction in the figure) of the iron plate 51, holes through which the upper and lower steel pipes 21B are inserted are opened, and both ends in the longitudinal direction of the iron plate 51 are inserted into the steel pipe 21B inserted through the holes. It is fixed. A lower side of the iron plate 51 and one long side of the iron plate 52 are rotatably connected via a hinge 54. Further, the other long side of the iron plate 52 and one long side of the iron plate 53 are connected to each other via a hinge 55 so as to be rotatable. The long sides of the iron plates 52 and 53 are shorter than the long sides of the iron plate 51 so that they do not interfere with the two upper and lower steel pipes 21 </ b> B and the wheels 30.

  As shown in FIG. 4, in a state where the tread plate 50 is deployed, the iron plate 52 falls vertically downward from the lower end of the iron plate 51, and the iron plate 53 extends from the lower end of the iron plate 52 to the dump truck 5 side. Here, the height of the frame portion 21 is adjusted by the jack of the wheel 30 so that the lower surface of the iron plate 53 is in contact with the ground. Further, the width of the iron plate 53 is set so that the iron plate 53 is stepped on the tire 9 of the dump truck 5.

  FIG. 5 is an elevation view showing the tread plate 50 in the retracted state in an enlarged manner. As shown in this figure, when the tread plate 50 is stored, the iron plates 52 and 53 are folded via the hinges 54 and 55. Here, the width of the iron plate 53 is set so that the lower end of the iron plate 53 is separated from the ground when the tread plate 50 is stored. In addition, the hanging strap 56 is attached to the hinge 55, and the iron plate 53 is suspended from the upper steel pipe 21B by the hanging strap 56 in the stowed step board 50.

  As described above, in the earth and sand spillage fall prevention device 11 according to the present embodiment, the stowage 50 installed so as to be retractable is opened on the ground in a deployed state and stepped on the tire 9 of the dump truck 5. Thereby, since the floating of the earth and sand spillage suppression apparatus 10 is suppressed by the load of the dump truck 5, the earth and sand spillage suppression apparatus 10 is prevented from falling. Moreover, since the tread board 50 can be stored, it is possible to prevent the tread board 50 from obstructing the movement of the earth and sand spillage suppression device 10. In the present embodiment, the tread plate 50 is provided in place of the fall prevention unit 23, but both may be provided side by side.

  FIG. 6 is an elevational view showing a sediment spillage suppression apparatus 100 according to another embodiment. As shown in this figure, the earth and sand spillage suppression device 100 includes an earth and sand receiving belt conveyor 110 instead of the earth and sand receiving plate 12 in the above-described embodiment. The earth and sand receiving belt conveyor 110 is fixed to the connecting portion 22 with a dedicated metal fitting (not shown).

  The earth and sand receiving belt conveyor 110 has a width (length in a direction orthogonal to the feeding direction) of the same length as the long side of the earth and sand receiving plate 12 and a belt length of about the length of the short side of the earth and sand receiving plate 12. The belt 112 includes about twice the belt 112 and a plurality of rollers 114 that are driven to rotate by the motor and rotate the belt 112. The plurality of rollers 114 are arranged in parallel to each other and in parallel to the earth retaining wall 1. Further, the plurality of rollers 114 are arranged so that the installation height gradually decreases from the excavation area 2 side to the dump truck 5 side. That is, the belt 112 has a plurality of rollers 114 such that the conveyance surface (upper surface) thereof is inclined with a lower slope from the excavation region 2 side to the dump truck 5 side, like the earth and sand receiving plate 12. It is supported by. Also, the end of the belt 112 on the dump truck 5 side overlaps with the left end of the loading platform 6 in the figure, and the end of the belt 112 on the excavation area 2 side overlaps with the right end of the excavation area 2 in the figure. As described above, the installation position with respect to the gantry 20 is set.

  The belt conveyor 110 rotates the belt 112 so that the upper surface side is sent from a high position to a low position. As a result, the earth and sand spilled from the bucket 4 onto the upper surface of the belt 112 is conveyed from the excavation area 2 side to the dump truck 5 side and sent to the loading platform 6 of the dump truck 5.

  As described above, in the sediment spillage suppression apparatus 100 according to the present embodiment, the sediment receiving belt conveyor 110 is supported by the gantry 20 configured to be movable in the installation position, so that the excavation position by the clamshell 3 is achieved. The earth and sand receiving belt conveyor 110 can be moved in accordance with the movement of the dump truck 5 and the stop position of the dump truck 5. Here, in the earth and sand receiving belt conveyor 110, the upper surface of the bell and 112 that receives the earth and sand that spills from the bucket 4 becomes an inclined surface that becomes lower as it approaches the loading platform 6, and the end of the upper loading platform 6 side of the upper surface is the loading platform 6. It is supported by the gantry 20 so as to be positioned above. Moreover, in the belt conveyor 110, it rotates so that the belt 112 may be sent to a low position from a high position by the upper surface side. Thereby, the earth and sand spilled from the bucket 4 onto the upper surface of the belt 112 is conveyed onto the loading platform 6. Therefore, it is possible to prevent the earth and sand loaded on the loading platform 6 of the dump truck 5 from being spilled on the ground with the bucket 4 of the clamshell 3. In particular, the earth and sand spilled on the upper surface of the belt 112 is sent onto the loading platform 6 by the rotation of the belt 112, so that it is possible to suppress the earth and sand from accumulating on the upper surface of the belt 112 and scattering of the accumulated earth and sand due to wind and the like.

  Here, it is not essential to rotate the belt 112 by a driving device such as a motor, and the belt 112 may be rotated by the weight of earth and sand. That is, since the upper surface of the belt 112 is inclined so as to become lower as it approaches the loading platform 6, when the earth and sand spills and falls on the upper surface of the belt 112, the upper surface side of the belt 112 is lowered from a high position due to its weight. A rotational force is generated that is sent to the position. By utilizing this fact, the belt 112 may be rotated without using the driving device, and the earth and sand thereon may be conveyed onto the loading platform 6.

  In addition, the above-mentioned embodiment is for making an understanding of this invention easy, and does not limit this invention. It goes without saying that the present invention can be changed and improved without departing from the gist thereof, and that the present invention includes equivalents thereof. For example, in the above-described embodiment, the upper surface of the earth-and-sand receiving plate 12 and the upper surface of the belt 112 of the earth-and-sand receiving belt conveyor 110 are inclined surfaces that become lower as approaching the loading platform 6, but as the inclined surfaces that decrease as the distance from the loading platform 6 increases. Also good. In this case, the earth and sand spilled from the bucket 4 onto the upper surface of the earth and sand receiving plate 12 and the belt 112 can be dropped to the excavation area 2, and the earth and sand can be prevented from spilling from the bucket 4 onto the ground.

  Moreover, in the above-mentioned embodiment, the granular or lump load loaded on the loading platform 6 of the dump truck 5 by the bucket 4 of the clam shell 3 is the earth and sand generated by excavation. Other granular materials or lumps are also included. Moreover, as a construction machine which loads a load into a conveyance vehicle with a bucket, it is not limited to a clamshell, and a conveyance vehicle is not limited to a dump truck.

  Furthermore, the configuration of the earth and sand spillage suppression devices 10 and 100 may be added or changed as appropriate. For example, the earth and sand receiving plate 12 is rotated so that the lower side descends and rises with the upper side as a rotation fulcrum, or is reciprocated in the direction approaching the loading platform 6 and vice versa. The movement of earth and sand from the car to the loading platform 6 may be promoted. Moreover, you may comprise so that the earth-and-sand receiving plate 12 can be stored in the mount frame 20. FIG.

DESCRIPTION OF SYMBOLS 1 Retaining wall, 2 Excavation area, 3 Clam shell, 4 Bucket, 5 Dump truck, 6 Cargo bed, 7 Cab, 8 Core material, 9 Tire, 10 Sediment spillage fall prevention device, 11 Sediment spillage fall prevention device, 12 Sediment receiving plate, 20 Base, 21 frame, 21A steel pipe, 21B steel pipe, 21C steel pipe, 21D steel pipe, 21E bracket, 21F building frame member, 22 coupling part, 22A square steel pipe, 22B square steel pipe, 22C steel pipe, 23 fall prevention part, 23A steel pipe, 30 Wheel, 40 Weight, 50 Footboard, 51 Iron plate, 52 Iron plate, 53 Iron plate, 54 Hinge, 55 Hinge, 56 Hanging string, 100 Sediment spillage suppression device, 110 Belt conveyor, 112 Belt, 114 roller

Claims (2)

A load or spillage suppression device that suppresses a granular or lump load loaded on a carrier bed of a construction machine from being spilled on the ground,
A load receiving portion comprising a receiving surface for receiving the load spilling from the bucket;
A pedestal configured to be movable at an installation position, and supporting the load receiving portion so that the receiving surface becomes an inclined surface that becomes lower as the receiving surface approaches or moves away from the loading platform;
A device for suppressing spillage of a load, comprising: a tread that is storably installed on the gantry and that is deployed on the ground in a deployed state and is stepped on a tire of the transport vehicle. The load receiving part is a belt that sends the load from a high position to a low position on the upper surface side due to the weight of the load spilled on the upper surface of the belt, the belt having the receiving surface on the upper surface. The apparatus according to claim 1, wherein the apparatus is a conveyor.

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