Soil and sand collection device

Abstract

This eliminates the need for workers to clean the conveyor system, thereby improving safety at the work site. [Solution] A soil recovery device is positioned below a conveyor device for transporting soil and soil, and recovers soil and soil that spills from the conveyor device, comprising: a receiving section for receiving soil and soil that spills from the conveyor device; a first screw conveyor for transporting the soil and soil received by the receiving section along a horizontal direction; a second screw conveyor for transporting the soil and soil transported by the first screw conveyor upward; and a guide section having a first inclined surface that slopes downward, which guides the soil and soil transported by the second screw conveyor to the conveyor device via the first inclined surface.

Description

Technical Field

[0001] The present invention relates to an earth and sand recovery device.

Background Art

[0002] At a work site (for example, a construction site) where earth and sand are handled, a conveyor device for transporting earth and sand is installed. In order to prevent the earth and sand spilled from the conveyor device from scattering around the conveyor device, a long plate-like member for receiving the earth and sand may be provided below the conveyor device along the conveying direction of the earth and sand by the conveyor device. (For example, Patent Documents 1 and 2)

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0004] In the case of Patent Document 1, it has a structure for automatically recovering the earth and sand deposited on the plate-like member at the end of the plate-like member. Also, in the case of Patent Document 2, it has a structure for automatically washing away the earth and sand deposited on the plate-like member with water. However, in either case of Patent Documents 1 and 2, depending on the amount and quality of the earth and sand, the earth and sand may stick to the plate-like member and remain, and if the earth and sand continue to accumulate like this, there is a risk of affecting the normal operation of the conveyor device. Therefore, it is necessary for the operator to periodically clean the plate-like member. When the operator performs the above cleaning, it is time-consuming because the work has to be done in a narrow space inside the conveyor device, and although the conveyor device is stopped for the work, there is also a possibility that the conveyor device may be accidentally operated during the cleaning work, so there is a problem of causing a disaster such as the operator being卷入 the conveyor device.

[0005] This invention has been made in view of the above problems, and one of its objectives is to provide a soil and sand collection device that eliminates the need for workers to clean the conveyor system and improves safety at the work site. [Means for solving the problem]

[0006] To achieve the above objective, the present invention provides a soil recovery device positioned below a conveyor device for transporting soil and soil, for recovering soil and soil that spills from the conveyor device, comprising: a receiving section for receiving soil and soil that spills from the conveyor device; a first screw conveyor for transporting the soil and soil received by the receiving section along a horizontal direction; a second screw conveyor for transporting the soil and soil transported by the first screw conveyor upward; and a guide section having a first inclined surface that slopes downward, for guiding the soil and soil transported by the second screw conveyor to the conveyor device via the first inclined surface. Other features of the present invention will be made clearer by description in this specification and the accompanying drawings. [Effects of the Invention]

[0007] According to the present invention, the need for workers to clean conveyor equipment is eliminated, thereby improving safety at the work site. [Brief explanation of the drawing]

[0008] [Figure 1A] This is a side view showing the first conveyor device 100. [Figure 1B] This is a perspective view showing the first conveyor system 100. [Figure 1C] This is a perspective view showing a part of the structure of the first conveyor belt 110 of the first conveyor device 100. [Figure 2A] This is a side view showing the second conveyor system 200. [Figure 2B] This is a perspective view showing the second conveyor system 200. [Figure 3]This is a side view showing the arrangement of the first conveyor system 100 and the second conveyor system 200. [Figure 4A] This is a side view showing the soil and sand collection device 300. [Figure 4B] This is a perspective view showing the soil and sand collection device 300. [Figure 5A] This is a top view showing the first screw conveyor 400. [Figure 5B] This is a side view showing the second screw conveyor 700. [Figure 6] This is a side view showing the conveyor system 10 and the soil and sand collection device 300. [Figure 7] This is another side view showing the conveyor system 10 and the soil and sand collection device 300. [Modes for carrying out the invention]

[0009] The following matters will become clear from this specification and the accompanying drawings. The present invention will be described below with reference to the accompanying drawings in accordance with one embodiment thereof. In this embodiment, the work site for handling soil and sand is, for example, a construction site, and the conveyor device 10 for transporting soil and sand generated by excavating the ground is installed at the construction site.

[0010] ===Conveyor device 10=== The conveyor system 10 consists of a first conveyor system 100 and a second conveyor system 200. The first conveyor system 100 and the second conveyor system 200 will be described in detail below.

[0011] FIG. 1A is a side view showing the first conveyor device 100. FIG. 1B is a perspective view showing the first conveyor device 100. FIG. 1C is a perspective view showing a part of the structure of the first conveyor belt 110 of the first conveyor device 100. FIG. 2A is a side view showing the second conveyor device 200. FIG. 2B is a perspective view showing the second conveyor device 200. FIG. 3 is a side view showing the arrangement relationship between the first conveyor device 100 and the second conveyor device 200. In FIGS. 1A to 1C, FIG. 2A, FIG. 2B, and FIG. 3, for the sake of easy understanding of the description of the first conveyor device 100 and the second conveyor device 200, the X-axis, Y-axis, and Z-axis indicating the three-dimensional directions are marked. Here, the X-axis is an axis along the horizontal direction, the +X direction is the direction from the left side of the paper surface to the right side of the paper surface in FIGS. 1A and 2A, and the -X direction is the direction from the right side of the paper surface to the left side of the paper surface in FIGS. 1A and 2A. The Y-axis is an axis along the horizontal direction perpendicular to the X-axis, the +Y direction is the direction from the front side of the paper surface to the back side of the paper surface in FIGS. 1A and 2A, and the -Y direction is the direction from the back side of the paper surface to the front side of the paper surface in FIGS. 1A and 2A. The Z-axis is an axis along the vertical direction perpendicular to the X-axis and the Y-axis, the +Z direction is the direction from the lower side of the paper surface to the upper side of the paper surface in FIGS. 1A and 2A, and the -Z direction is the direction from the upper side of the paper surface to the lower side of the paper surface in FIGS. 1A and 2A.

[0012] <The first conveyor device 100> The first conveyor device 100 is a device that conveys the received earth and sand to a predetermined position. The first conveyor device 100 includes a first conveyor belt 110 and a plurality (five in this embodiment) of pulleys 120A to 120E. The first conveyor belt 110 is an endless belt. The longitudinal direction of the first conveyor belt 110 is the conveying direction of the earth and sand by the first conveyor belt 110. The width direction (the direction along the Y-axis) of the first conveyor belt 110 is the direction perpendicular to the conveying direction of the earth and sand by the first conveyor belt 110.

[0013] Pulleys 120A to 120E are installed at five predetermined locations in the earth and sand conveyance path so that the first conveyor belt 110 can move along the earth and sand conveyance path. Pulleys 120A to 120E are supported at the above five positions by support facilities (not shown).

[0014] The rotation axes of pulleys 120A to 120E are axes along the width direction of the first conveyor belt 110. The first conveyor belt 110 is wound around pulleys 120A to 120E with a certain tension so that it can repeatedly circulate along the earth and sand conveyance path. The rotation axis of any one of pulleys 120A to 120E is directly connected to the rotation axis of the motor (not shown) so that the driving force of the motor is transmitted, or is indirectly connected via at least one or more gears (not shown) that adjust the moving speed of the first conveyor belt 110. That is, when pulleys 120A to 120E receive the driving force of the motor and rotate, the first conveyor belt 110 receives the rotational force of pulleys 120A to 120E and circulates along the earth and sand conveyance path. For example, the first conveyor belt 110 circulates from the position of pulley 120A to the position of pulley 120B, then from the position of pulley 120B to the position of pulley 120C, then from the position of pulley 120C to the position of pulley 120D, then from the position of pulley 120D to the position of pulley 120E, and finally returns from the position of pulley 120E to the position of pulley 120A.

[0015] As shown in FIG. 1C, on the surface of the first conveyor belt 110 on the side that receives the earth and sand, walls 130A and 130B and a plurality of flat partition plates 140 are provided over the entire circumference of the first conveyor belt 110.

[0016] Walls 130A and 130B rise vertically from both sides along the longitudinal direction of the first conveyor belt 110 at a constant height. Walls 130A and 130B have a bellows shape, repeating mountain folds and valley folds parallel to the direction in which they rise from both sides of the first conveyor belt 110. Walls 130A and 130B are formed using elastic materials such as natural rubber or synthetic rubber. For example, in sections where the conveying direction of the first conveyor belt 110 changes due to pulleys 120A to 120E, the folding angles of the mountain folds and valley folds away from the first conveyor belt 110 increase, and the spacing between the mountain folds and valley folds widens. On the other hand, in sections where the conveying direction of the first conveyor belt 110 does not change, the folding angles of the mountain folds and valley folds away from the first conveyor belt 110 decrease, and the spacing between the mountain folds and valley folds narrows.

[0017] The partition plate 140 is a plate that divides the area around the entire circumference of the first conveyor belt 110 between wall 130A and wall 130B into multiple areas. The partition plate 140 is installed between walls 130A and 130B along the width direction of the first conveyor belt 110. Multiple partition plates 140 are installed at regular intervals along the longitudinal direction of the first conveyor belt 110. By partitioning the area between walls 130A and 130B with the partition plate 140, multiple buckets 150 for containing soil and sand are formed. Since the soil and sand can be transported in small portions into multiple buckets 150, for example, when transporting soil and sand in the direction from the top to the bottom (-Z direction) or from the bottom to the top (+Z direction) of the first conveyor device 100, it is possible to prevent soil and sand from entering adjacent buckets 150, and the soil and sand can be transported smoothly.

[0018] Note that the bellows shape is omitted in the description of walls 130A and 130B shown in Figures 1A and 1B.

[0019] The first conveyor device 100 is structured to receive soil at position P1 and discharge the transported soil at position P2 to other equipment.

[0020] <Second conveyor device 200> The second conveyor device 200 is installed below (on the -Z side) the first conveyor device 100 and is a device that collects soil and sand that has spilled from both sides along the longitudinal direction of the first conveyor belt 110 and returns (guides) the collected soil and sand back onto the first conveyor belt 110. The second conveyor device 200 consists of a second conveyor belt 210 and a plurality (four in this embodiment) of pulleys 220A to 220D. The second conveyor belt 210 is an endless belt. The longitudinal direction of the second conveyor belt 210 is the same as the longitudinal direction of the first conveyor belt 110. The width direction of the second conveyor belt 210 is the same as the width direction of the first conveyor belt 110. For example, if the amount of soil contained in each bucket 150 of the first conveyor belt 110 exceeds a certain amount, there is a risk that the soil may spill out from both sides along the longitudinal direction of the first conveyor belt 110 while the first conveyor device 100 is transporting the soil. Therefore, the widthwise length of the second conveyor belt 210 is longer than the widthwise length of the first conveyor belt 110 so that the second conveyor belt 210 can receive the soil that spills out from both sides along the longitudinal direction of the first conveyor belt 110.

[0021] Pulleys 220A to 220D are installed at four predetermined locations so that the second conveyor belt 210 can collect soil and sand that has spilled from the first conveyor belt 110 and return the collected soil and sand to the first conveyor belt 110. Pulleys 220A to 220D are supported at the above four locations by support equipment (not shown).

[0022] To shorten the installation distance between the first conveyor belt 110 and the second conveyor belt 210, the diameters of pulleys 220A to 220D are shorter than the diameters of pulleys 120A to 120E.

[0023] The axis of rotation of pulleys 220A to 220D is aligned with the width direction of the second conveyor belt 210. The walls 130A and 130B on the first conveyor belt 110, which is wrapped around pulley 120A, are pressed against the curved surface 210A of the second conveyor belt 210 with a constant pressure, and a constant tension is applied to the second conveyor belt 210. As a result, when pulley 120A rotates under the driving force of the motor, the second conveyor belt 210 moves longitudinally together with the first conveyor belt 110 and rotates in a circle due to the influence of the pressing force of the first conveyor belt 110 on the second conveyor belt 210. For example, the second conveyor belt 210 circulates by moving from the position of pulley 220A to the position of pulley 220B, then from the position of pulley 220B to the position of pulley 220C, then from the position of pulley 220C to the position of pulley 220D, and finally returning from the position of pulley 220D to the position of pulley 220A. Alternatively, a motor (not shown) may be provided separately to transmit driving force to pulleys 220A to 220D, so that the second conveyor belt 210 circulates in synchronization with the first conveyor belt 110.

[0024] The upward-facing surface 210B of the second conveyor belt 210, which moves from right to left, is opposed by the downward-facing surface 110B of the first conveyor belt 110, which moves from right to left. However, the distance between surfaces 110B and 210B decreases as you move from right to left to ensure that the soil is transferred from the second conveyor belt 210 to the first conveyor belt 110.

[0025] The collected soil guided to the right end of surface 210B of the second conveyor belt 210 moves from right to left as the second conveyor belt 210 moves from right to left. The soil that has moved to the left end of surface 210B of the second conveyor belt 210 is then transferred from the second conveyor belt 210 to the first conveyor belt 110 at a position where the first conveyor belt 110 is pressed against the second conveyor belt 210 with a constant pressure.

[0026] ===Soil and Sediment Removal Device 300=== Figure 4A is a side view showing the soil and sand collection device 300. Figure 4B is a perspective view showing the soil and sand collection device 300. Figure 5A is a top view showing the first screw conveyor 400. Figure 5B is a side view showing the second screw conveyor 700. Figure 6 is a side view showing the conveyor device 10 and the soil and sand collection device 300. Figure 7 is another side view showing the conveyor device 10 and the soil and sand collection device 300. In addition, the X, Y, and Z axes indicating three-dimensional directions will be indicated in Figures 4A, 4B, 5A, 5B, 6, and 7 to make the explanation of the soil and sand collection device 300 easier to understand. Here, the X axis is the axis along the horizontal direction, the +X direction is the direction from the left side of Figure 4A to the right side of the paper, and the -X direction is the direction from the right side of Figure 4A to the left side of the paper. The Y-axis is a horizontal axis perpendicular to the X-axis. The +Y direction is from the front to the back of Figure 4A, and the -Y direction is from the back to the front of Figure 4A. The Z-axis is a vertical axis perpendicular to the X and Y axes. The +Z direction is from the bottom to the top of Figure 4A, and the -Z direction is from the top to the bottom of Figure 4A. The directions of the X, Y, and Z axes shown in Figures 1A-1C, 2A, 2B, and 3 are the same as the directions of the X, Y, and Z axes shown in Figures 4A, 4B, 5A, 5B, 6, and 7.

[0027] Soil and sand that spills from both sides along the longitudinal direction of the first conveyor belt 110 falls onto the second conveyor belt 210. However, depending on the amount and type of soil that spills, the soil and sand that falls onto the second conveyor belt 210 may not be able to be contained by the second conveyor belt 210 alone, and may spill further from both sides along the longitudinal direction of the second conveyor belt 210. The soil and sand recovery device 300 is a device that recovers the soil and sand that spills from both sides along the longitudinal direction of the second conveyor belt 210 and returns (guides) the recovered soil and sand back onto the second conveyor belt 210.

[0028] The soil and sand collection device 300 consists of a first screw conveyor 400, an inclined plate (receiving section) 500, a semi-cylindrical body (receiving tray) 600, a second screw conveyor 700, a cylindrical body 800, and a chute (guide section) 900.

[0029] <Configuration of the first screw conveyor 400 and its surroundings> The first screw conveyor 400 is a long, elongated member located below the second conveyor device 200 (-Z side) between two pulleys 220A and 220D, which are supported in a position that allows the second conveyor belt 210 to move horizontally along its longitudinal direction, in order to collect soil and sand that has spilled from both sides along the longitudinal direction of the second conveyor belt 210. The longitudinal direction of the first screw conveyor 400 is the same as the longitudinal direction of the second conveyor belt 210.

[0030] The first screw conveyor 400 comprises a rotating shaft 410 and screw blades 420. The direction of the rotating shaft 410 is along the longitudinal direction of the first screw conveyor 400. The length of the screw blades 420 along the direction of the rotating shaft 410 is equivalent to the length between pulleys 220A and 220D, and the screw blades 420 are coupled around the rotating shaft 410. The driving force of the motor 430 is transmitted to the rotating shaft 410 so that the screw blades 420 can transport soil from left to right. The first screw conveyor 400 is installed so that the rotating shaft 410 is horizontal. In this embodiment, the "horizontal" direction may be a substantially horizontal direction such as one that is parallel to the ground.

[0031] The semi-cylindrical body 600 is a component that receives soil and sand spilling from both sides along the longitudinal direction of the second conveyor belt 210 via the inclined plate 500. The longitudinal direction of the semi-cylindrical body 600 is the same as the longitudinal direction of the first screw conveyor 400. The semi-cylindrical body 600 is installed horizontally below (-Z side) the first screw conveyor 400, along the longitudinal direction in which the first screw conveyor 400 transports soil and sand, so as to cover the lower half of the first screw conveyor 400.

[0032] The inclined plate 500 is a flat plate that receives soil and sand that spills from both sides along the longitudinal direction of the second conveyor belt 210 and guides this soil and sand toward the first screw conveyor 400 and the semi-cylindrical body 600.

[0033] The inclined plate 500 consists of a pair of inclined plates 500A and 500B, the longitudinal direction of the inclined plates 500A and 500B being the same as the longitudinal direction of the first screw conveyor 400. The inclined plates 500A and 500B are each installed adjacent to each other on both sides along the longitudinal direction of the semi-cylindrical body 600.

[0034] The longitudinal lengths of the inclined plates 500A and 500B are equivalent to the length between the pulleys 220A and 220D, and the inclined plates 500A and 500B each have inclined surfaces (second inclined surfaces) 510A and 510B that slope downward towards both sides along the longitudinal direction of the semi-cylindrical body 600.

[0035] To ensure that the inclined plates 500A and 500B can reliably receive the soil and sand spilling from both sides along the longitudinal direction of the second conveyor belt 210, the combined length of the inclined plates 500A and 500B and the semi-cylindrical body 600 in the width direction of the second conveyor belt 210 is longer than the width direction of the second conveyor belt 210. Furthermore, the inclined plates 500A and 500B extend beyond both sides along the longitudinal direction of the second conveyor belt 210.

[0036] In this embodiment, the widthwise lengths of the inclined plates 500A and 500B are different. However, the installation positions of the first screw conveyor 400 and the semi-cylindrical body 600 may be changed to the center position in the widthwise direction of the second conveyor belt 210, and the widthwise lengths of the inclined plates 500A and 500B may be made the same.

[0037] <Configuration of the second screw conveyor 700 and its surroundings> The second screw conveyor 700 is a long-shaped component that receives soil and sand transported from left to right by the first screw conveyor 400 and transports the received soil and sand from a position below the upward surface 210B of the second conveyor belt 210 to a position above it. The longitudinal direction of the second screw conveyor 700 is perpendicular to the longitudinal direction of the first screw conveyor 400 (along the Z-axis). The second screw conveyor 700 is installed adjacent to the right side (+X side), which is the side where the first screw conveyor 400 finishes transporting soil and sand.

[0038] The second screw conveyor 700 comprises a rotating shaft 710 and screw blades 720. The direction of the rotating shaft 710 is along the longitudinal direction (along the Z-axis) of the second screw conveyor 700. The length of the screw blades 720 along the direction of the rotating shaft 710 is from the right side of the screw blades 420 to a position higher than the upward surface 210B of the second conveyor belt 210, and the screw blades 720 are coupled around the rotating shaft 710. The driving force of the motor 730 is transmitted to the rotating shaft 710 so that the screw blades 720 can transport soil from bottom to top. The second screw conveyor 700 is installed so that the rotating shaft 710 is vertical.

[0039] The cylindrical body 800 is a member that houses and supports the second screw conveyor 700 so that the second screw conveyor 700 can rotate around the rotation axis 710 inside it. The longitudinal direction of the cylindrical body 800 is the same as the longitudinal direction of the second screw conveyor 700. The axis along the longitudinal direction of the cylindrical body 800 is coaxial with the rotation axis 710 along the longitudinal direction of the second screw conveyor 700. The length of the cylindrical body 800 in the longitudinal direction is longer than the length of the second screw conveyor 700 so that the cylindrical body 800 can house the second screw conveyor 700. The upper and lower end faces of the cylindrical body 800 are closed.

[0040] On the side of the cylindrical body 800 along its longitudinal direction, on the lower side facing the second conveyor belt 210, there is an opening 810 into which soil and sand transported from left to right by the first screw conveyor 400 enters. The opening 810 is connected to the right end portion of the semi-cylindrical body 600 through which the soil and sand are transferred, thereby making the semi-cylindrical body 600 and the cylindrical body 800 a single unit. Furthermore, on the upper side of the cylindrical body 800 that faces the second conveyor belt 210 along its longitudinal direction, there is an outlet 820 for discharging soil and sand that has been transported from bottom to top by the second screw conveyor 700.

[0041] The chute 900 is a component that guides the soil discharged from the outlet 820 of the cylindrical body 800 to the rightmost portion of the second conveyor belt 210. The chute 900 has an inclined surface (first inclined surface) 910 that slopes downward from the outlet 820 toward the second conveyor belt 210, and the soil slides down the inclined surface 910 and falls onto the upward surface 210B of the second conveyor belt 210. When viewed along the direction from which the soil slides down, the chute 900 has, for example, a U-shape.

[0042] <Soil and sand collection operation of soil and sand collection device 300> The following describes the soil and sand collection operation by the soil and sand collection device 300. The first conveyor device 100 operates to transport soil and sand, while the second conveyor device 200 operates to collect soil and sand that spills from the first conveyor device 100. Meanwhile, the first screw conveyor 400 operates to transport soil and sand that spills from the second conveyor device 200 to the second screw conveyor 700, while the second screw conveyor 700 operates to guide the soil and sand received from the first screw conveyor 400 to the second conveyor device 200.

[0043] If soil spills from the first conveyor belt 110 while it is being transported, the spilled soil will fall towards the second conveyor belt 210. Depending on the amount and type of soil, at least a portion of the soil spilled from the first conveyor belt 110 may not be caught by the second conveyor belt 210 and may spill further from the second conveyor belt 210.

[0044] If soil spills from the second conveyor belt 210 while it is being collected, the spilled soil falls towards the inclined plates 500A and 500B. The soil that falls onto the inclined plates 500A and 500B slides down the inclined surfaces 510A and 510B towards the first screw conveyor 400 and the semi-cylindrical body 600. The soil that has been transported into the semi-cylindrical body 600 is then transported by the first screw conveyor 400 from left to right (+X direction) through the entrance 810 into the cylindrical body 800.

[0045] The soil and sand transported into the cylindrical body 800 are then transported by the second screw conveyor 700 from bottom to top (+Z direction) and discharged from the outlet 820.

[0046] The soil discharged from outlet 820 slides down the inclined surface 910 of chute 900 and is guided onto the second conveyor belt 210.

[0047] In this way, the soil that spills off the second conveyor belt 210 is transported horizontally by the first screw conveyor 400, then transported vertically by the second screw conveyor 700, returning to the second conveyor belt 210, and then returning from the second conveyor belt 210 to the first conveyor belt 110.

[0048] ===Summary=== As described above, the soil recovery device 300, which is positioned below the first conveyor device 100 for transporting soil and soil and the second conveyor device 200 for recovering soil that has spilled from the first conveyor device 100 and recovers soil that has spilled from the second conveyor device 200, comprises inclined plates 500A and 500B for receiving soil that has spilled from the second conveyor device 200, a first screw conveyor 400 for transporting the soil received by the inclined plates 500A and 500B along the horizontal direction, a second screw conveyor 700 for transporting the soil that has been transported by the first screw conveyor 400 upward, and a chute 900 having an inclined surface 910 that slopes downward and guides the soil that has been transported by the second screw conveyor 700 to the second conveyor belt 210 of the second conveyor device 200 via the inclined surface 910.

[0049] According to the soil and sand collection device 300, in order to collect soil and sand that has spilled from the second conveyor device 200, the soil and sand are transported horizontally and vertically using the first screw conveyor 400 and the second screw conveyor 700. This eliminates the need for workers to clean the first conveyor device 100 and the second conveyor device 200, thereby improving safety at the work site.

[0050] Furthermore, in the soil recovery device 300, the inclined plates 500A and 500B are each equipped with inclined surfaces 510A and 510B that slope downward, and guide the soil spilled from the second conveyor device 200 to the first screw conveyor 400 via the inclined surfaces 510A and 510B. According to the soil and sand collection device 300, the first screw conveyor 400 can reliably transport the soil and sand that has spilled out from the second conveyor device 200.

[0051] Furthermore, in the soil and sand collection device 300, at least one of the inclined plates 500A and 500B is provided along the longitudinal direction of the first screw conveyor 400.

[0052] According to the soil recovery device 300, the inclined plates 500A and 500B can be selectively installed according to the location, amount, and soil type of the soil spilling from the second conveyor device 200, so that the first screw conveyor 400 can reliably transport the soil spilling from the second conveyor device 200.

[0053] Furthermore, in the soil and sand collection device 300, a semi-cylindrical plate 600 is installed below the first screw conveyor 400, along the longitudinal direction of the first screw conveyor 400, so as to cover the underside of the first screw conveyor 400.

[0054] According to the soil and sand collection device 300, the soil and sand that spills from the second conveyor device 200 accumulates on the semi-cylindrical plate 600, so the first screw conveyor 400 can reliably transport the soil and sand that spills from the second conveyor device 200.

[0055] The above embodiments are provided to facilitate understanding of the present invention and are not intended to limit its interpretation. The present invention may be modified or improved without departing from its spirit, and equivalents thereof are also included.

[0056] In this embodiment, the conveyor system 10 is configured to include a first conveyor system 100 and a second conveyor system 200, and the soil and sand collection device 300 collects soil and sand that spills from the second conveyor system 200, which collects soil and sand that spills from the first conveyor system 100, but is not limited to this. For example, the second conveyor system 200 may be omitted, and the soil and sand collection device 300 may collect soil and sand that spills from the first conveyor system 100 and guide the collected soil and sand to the first conveyor system 100. [Explanation of symbols]

[0057] 10 Conveyor device, 100 First conveyor device, 110 First conveyor belt, 110B, 210B surfaces, 120A~120E, 220A~220D pulleys, 130A, 130B walls, 140 partition plates, 150 buckets, 200 Second conveyor device, 210 Second conveyor belt, 210A Curved surface, 300 Soil and sand collection device, 400 First screw conveyor, 410, 710 Rotating shaft, 420,720 screw blades, 430,730 motors, 500 inclined plates, 500A, 500B Inclined plate, 510A, 510B Inclined surface, 600 Semi-cylindrical plate, 700 Second screw conveyor, 800 Cylindrical plate, 810 Inlet, 820 Outlet, 900 Screw, 910 Inclined Surface

Claims

1. A soil recovery device positioned below a conveyor system for transporting soil and soil, which recovers soil and soil that spills from the conveyor system, A receiving section for receiving soil and sand that spills from the conveyor device, A first screw conveyor transports the soil received by the receiving section along the horizontal direction, A second screw conveyor transports the soil and sand conveyed by the first screw conveyor upwards, A guide section having a first inclined surface that slopes downward, which guides the soil and sand conveyed by the second screw conveyor to the conveyor device via the first inclined surface, A soil and sand collection device equipped with this device.

2. A soil and sand collection device according to claim 1, The receiving portion is equipped with a second inclined surface that slopes downward, and guides the soil and sand that spills from the conveyor device to the first screw conveyor via the second inclined surface. Soil and sediment removal device.

3. A soil and sand collection device according to claim 2, The second inclined surface is provided on at least one side of the first screw conveyor, along the direction in which soil is transported by the first screw conveyor. Soil and sediment removal device.

4. A soil and sand collection device according to claim 2 or 3, The first screw conveyor includes a receiving tray positioned to cover the underside of the first screw conveyor along the direction in which soil is transported by the first screw conveyor. Soil and sediment removal device.

5. A soil and sand collection device according to claim 1, The conveyor device is The first conveyor system for transporting soil and sand, The system includes a second conveyor device that collects soil and sand spilled from the first conveyor device and guides it to the first conveyor device, The guide section guides the soil and sand transported by the second screw conveyor to the second conveyor device. Soil and sediment removal device.

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