Amphibious Dredge

Abstract

(summary) (assignment) The present invention aims to provide an amphibious dredger that can perform dredging work in a wide range of terrains, and can perform stable dredging work by preventing a decrease in movement speed and durability caused by soil and sand getting caught in the float. (Solution) Provided is an amphibious dredger comprising: first, second and third drum-shaped floats mounted at the bottom of the amphibious dredger and capable of independently rotating around the widthwise axis of the machine body; blades are provided longitudinally toward the central axis of the width of each float when viewed from the front of the machine body; both ends of each float are provided with a power unit for rotating the float and a first connection unit capable of rotatably moving around an axis perpendicular to the upper plane of the machine body; a rotatable hydraulic excavator; a third float provided at the rear end when viewed from the longitudinal direction of the upper plane of the machine body, and a rotatable frame unit connected to a second connection unit which connects to the screw unit. (Selection diagram) Figure 1

Description

[Technical field]

[0001] The present invention relates to an amphibious dredger. [Background technology]

[0002] For dredging work, work vessels called dredgers are used, such as grab dredgers equipped with grab buckets and backhoe dredgers equipped with backhoes. In addition, when dredging (removing soil and sludge) is performed in areas other than shores or coasts, such as in icy water areas, during land subsidence or flooding due to liquefaction caused by heavy rain or earthquakes, in wetlands, on soft ground, underwater, etc., it is necessary to use an amphibious dredger that can be moved both on water and on land. Traditionally, work has been carried out using ship-type or crawler-type dredgers, but for example, amphibious crawler-type dredgers with tracks have issues with durability when used on soft ground such as muddy areas where soil, sludge, etc. are mixed together, as the tracks can get caught in the tracks and be damaged. There are also issues with the reduced propulsion power, which significantly reduces the dredger's moving speed, reducing work efficiency.

[0003] To solve this problem, dredgers equipped with propellers on a vehicle with tracks have been developed, but although this has improved the speed at which they can move on water, in soft ground such as muddy areas, soil and sludge still get caught between the tracks and propellers, making it impossible to improve the dredger's speed or durability. The problem of reduced travel speed and durability when on water or on soft ground, i.e., damage to the aircraft and reduced work efficiency, remains unsolved.

[0004] Patent Document 1 discloses that an amphibious dredger having a rotating bladed float with spiral blades attached to the bottom of the grab device body can be used to perform various tasks and garbage collection operations on shorelines, coasts, wetlands, etc.; however, this only enables the dredger to move on water or in wetlands; issues remain, such as a decrease in movement speed due to soil and sludge getting caught in the floats, reducing propulsion, and the durability of the dredger's floats, making it impossible to perform stable dredging operations.

[0005] In recent years, disasters have been increasing, and dredging work is becoming more common when land subsidence or flooding occurs due to liquefaction caused by heavy rain or earthquakes, or when dredging work is performed on soft ground such as in wetlands. In particular, dredging work in cold regions is not only performed on the soft ground mentioned above, but also on the soft ground that freezes due to the drop in temperature, and frozen soil and sludge get caught in the ground, causing a decrease in the moving speed of the dredger and a decrease in the durability of the machine, and no adequate measures have been taken to address this issue, making it necessary to take measures against such issues. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] Publication No. 59-129610 Summary of the Invention [Problem to be solved by the invention]

[0007] The amphibious dredger of the present invention is capable of dredging in a wide range of terrains, such as on snow, in icy seas, in cold regions such as icy areas, in changed terrains due to subsidence caused by liquefaction caused by heavy rain or earthquakes, and on soft ground such as muddy areas. The amphibious dredger of the present invention aims to provide an amphibious dredger capable of performing stable dredging operations by preventing a decrease in movement speed and a decrease in durability caused by soil, sludge, etc. getting caught in the floats. [Means for solving the problem]

[0008] The invention of claim 1 is an amphibious dredger comprising first, second and third drum-shaped floats provided at the bottom of the body of the amphibious dredger and capable of independently rotating around the widthwise axis of the body, a blade having a spiral structure is provided in the longitudinal direction of each of the drum-shaped first, second and third floats toward the widthwise central axis of the drum-shaped first, second and third floats when viewed from the front of the body, and a power unit for rotating each of the drum-shaped first, second and third floats is provided at both ends of each of the drum-shaped first, second and third floats, The present invention relates to an amphibious dredger, characterized in that it comprises a first connection part which is provided so as to be freely rotatable around an axis perpendicular to the upper plane of the body, a rotatable hydraulic excavator connected to the first connection part, and a rotatable frame part which is provided on the upper plane of the body with two spats which can freely move back and forth in the vertical direction, and which is connected to a second connection part provided at the rear end when viewed from the longitudinal direction of the upper plane of the body, the frame part being connected to the drum-shaped third float, the frame part being rotatable about a central axis in the width direction of the body, and having a screw part connected to the second connection part and the connection part of the frame part.

[0009] The invention of claim 2 relates to an amphibious dredger as described in claim 1, characterized in that the frame portion is capable of rotating up to 20° about the widthwise central axis of the body.

[0010] The invention of claim 3 relates to an amphibious dredger as described in claim 1, characterized in that the drum-shaped second float has a smaller diameter than the first or third float.

[0011] The invention according to claim 4 relates to an amphibious dredger as described in claim 1, characterized in that the material of the spiral structure is iron.

[0012] The invention of claim 5 relates to an amphibious dredger as described in claim 1, characterized in that the drum-shaped first, second and third floats are configured along the longitudinal axis that respectively penetrates the center of the floats, and a power unit is configured so that the drum-shaped first, second and third floats and the axis rotate integrally, and the axis is connected to the power unit.

[0013] The invention according to claim 6 relates to the amphibious dredger according to claim 1, characterized in that the blade having the spiral structure has a thickness of 9 mm to 15 mm.

[0014] The invention of claim 7 relates to an amphibious dredger as described in any one of claims 1 to 6, characterized in that the spiral structure of the blade is welded to the drum-shaped first, second and third floats, respectively. Effect of the Invention

[0015] According to the amphibious dredger of claim 1, the amphibious dredger comprises first, second and third drum-shaped floats provided at the bottom of the body of the amphibious dredger and each of the floats can rotate independently around an axis in the width direction of the body, a blade having a spiral structure is provided in the longitudinal direction of each of the drum-shaped first, second and third floats toward the central axis in the width direction of the drum-shaped first, second and third floats when viewed from the front of the body, and a power unit for rotating each of the drum-shaped first, second and third floats is provided at both ends of each of the drum-shaped first, second and third floats, and the dredger can rotate freely around an axis perpendicular to the upper plane of the body. a rotatable hydraulic excavator connected to the first connection part, and a rotatable frame part having two spots on the upper surface of the body that can move back and forth in the vertical direction and connected to a second connection part provided at the rear end when viewed from the longitudinal direction of the upper surface of the body, the frame part being connected to the drum-shaped third float, the frame part being rotatable about the central axis in the width direction of the body, and having a screw part connected to the connection part of the second connection part and the frame part, thereby achieving the effect of preventing a decrease in movement speed and a decrease in durability due to soil, sludge, etc. getting caught in the float, thereby enabling stable dredging work to be performed.

[0016] According to the amphibious dredger of claim 2, the frame portion is characterized in that it can rotate up to 20° about the widthwise central axis of the body, thereby enabling the propulsion direction to be stably determined even on snow, icy seas, icy and snowy areas, wetlands, muddy areas, etc., and preventing a decrease in movement speed due to a decrease in propulsive force, thereby achieving the effective effect of enabling dredging operations to be carried out efficiently.

[0017] According to the amphibious dredger of claim 3, the drum-shaped second float is characterized in that it has a smaller diameter than the first or third float.Therefore, when running on soft ground, if the main body runs over a stone or the like using only the first and third floats, the second float can assist in running, thereby enabling the dredger to run efficiently on soft ground where running is not stable, thereby achieving the effective effect of preventing a decrease in the moving speed of the amphibious dredger.

[0018] According to the amphibious dredger of claim 4, the spiral structure is characterized by being made of iron, and therefore due to its excellent durability, the spiral structure of the float is less likely to be damaged, and it can efficiently scoop out soil and sludge.Therefore, for example, when the amphibious dredger is traveling through muddy areas or on icy seas, the float is not worn down by rocks, ice, etc., which prevents a decrease in the function of scooping out soil, sludge, etc., and thereby prevents a decrease in the movement speed, which has the excellent effect of preventing this.

[0019] According to the amphibious dredger of claim 5, the drum-shaped first, second and third floats are configured along the longitudinal axis that penetrates the center of the floats, and the power unit is configured so that the drum-shaped first, second and third floats rotate integrally with the axis, and the axis is connected to the power unit, thereby achieving the excellent effect of efficiently transmitting energy from the power unit to each float unit through the axis.

[0020] According to the amphibious dredger of claim 6, the invention of claim 7 is characterized in that the blade consisting of the spiral structure has a thickness of 9mm to 15mm, thereby achieving the excellent effect of enabling dredging operations to be performed using an amphibious dredger with excellent durability on snow, icy seas, snowy and icy areas, muddy areas, etc.

[0021] According to the amphibious dredger of claim 7, the spiral structure of the blade is characterized by being welded to the drum-shaped first, second and third floats, respectively, thereby achieving the excellent effect of forming a blade whose durability is prevented from being reduced by soil, sludge, etc. [Brief description of the drawings]

[0022] [Figure 1] FIG. 1 is a left side view showing an amphibious dredger, which is one embodiment of the amphibious dredger according to the present invention. [Diagram 2] FIG. 2 is a top plan view showing an amphibious dredger according to one embodiment of the present invention, taken along the line AA of FIG. 1 from above. [Figure 3a] This is a partial top plan view showing an amphibious dredger, which is one embodiment of the amphibious dredger of the present invention, viewed from above at the AA section of Figure 1 when the amphibious dredger is moving straight ahead. [Figure 3b] This is a partial top plan view showing an amphibious dredger, one embodiment of the amphibious dredger of the present invention, viewed from above along section AA in Figure 1 when the amphibious dredger is turning left. [Figure 3c] This is a partial top plan view showing an amphibious dredger, one embodiment of the amphibious dredger of the present invention, viewed from above at section AA in Figure 1 when the amphibious dredger is turning right. [Figure 4] FIG. 1 is a front view of an amphibious dredger, which is one embodiment of the amphibious dredger according to the present invention. [Diagram 5] FIG. 1 is a rear view of an amphibious dredger according to one embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0023] An amphibious dredger according to an embodiment of the present invention will now be described with reference to the accompanying drawings, but it goes without saying that this is merely one example.

[0024] The terms used herein are not intended to limit the scope of the present invention, which is limited only by the appended claims. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art.

[0025] The amphibious dredger is shown to be used on snow, in icy seas, in snowy and icy areas, in wetlands and muddy areas, but is not limited to these, and the amphibious dredger of the present invention can also be applied to rivers and estuaries, for example.

[0026] The material of the helical structure included in the present invention includes metals, alloys and synthetic metals, for example, iron, aluminum, aluminum alloys, cupro-nickel, steel, stainless steel, etc., and it is particularly preferable to use iron.

[0027] <Amphibious dredger> FIG. 1 is a left side view of an amphibious dredger according to an embodiment of the present invention. FIG. 2 is a top plan view of an amphibious dredger according to an embodiment of the present invention, taken along line AA of FIG. 1. FIG. 3 is a partial view of the top plan view of an amphibious dredger according to an embodiment of the present invention, taken along line AA of FIG. 1, when the amphibious dredger is propelled. FIG. 4 is a front view of an amphibious dredger according to an embodiment of the present invention. FIG. 5 is a rear view of an amphibious dredger according to an embodiment of the present invention. 1 to 5, an amphibious dredger (1) according to an embodiment of the present invention is provided with first, second and third drum-shaped floats (4a, 4b, 4c) that are provided at the bottom of a body (2) of the amphibious dredger (1) and can rotate independently around a widthwise axis (S1) of the body (2). Next, blades (10) each having a spiral structure (5) are provided in the longitudinal direction of each of the drum-shaped first, second and third floats (4a, 4b, 4c) toward a widthwise central axis (S2) of the drum-shaped first, second and third floats (4a, 4b, 4c) as viewed from the front of the body (2). A power unit (8) is provided at each end of each of the drum-shaped first, second and third floats (4a, 4b, 4c) to rotate them through the shafts (7) of the drum-shaped first, second and third floats (4a, 4b, 4c), a first connection part (9a) is provided so as to be rotatable around an axis (V) perpendicular to the upper plane of the machine body, and a rotatable hydraulic excavator (3) is connected to the first connection part (9a).The upper plane of the machine body (2) is provided with two spat (11) that can reciprocate in the vertical direction, and further includes a rotatable frame part (6) connected to a second connection part (9b) provided at the rear end as viewed from the longitudinal direction (L1) of the upper plane of the machine body (2). This frame portion (6) is connected to the drum-shaped third float (4c), and the frame portion (6) is rotatable about the central axis (S1) in the width direction of the aircraft body, and includes a screw portion (12) connected to the connection portion of the second connection portion (9b) and the frame portion (6). The material used for the spiral structure (5) is as described above.

[0028] 1 to 3(ac), an amphibious dredger (1) according to an embodiment of the present invention is provided with drum-shaped first, second and third floats (4a, 4b, 4c) that are provided at the bottom of the body (2) of the amphibious dredger (1) and can rotate independently around a widthwise axis (S1) of the body (2). Next, blades (10) each having a spiral structure (5) are provided in the longitudinal direction of each of the drum-shaped first, second and third floats (4a, 4b, 4c) toward the widthwise central axis (S2) of the drum-shaped first, second and third floats (4a, 4b, 4c) as viewed from the front of the body (2). A power unit (8) for rotating the drum-shaped first, second and third floats (4a, 4b, 4c) is provided at both ends of each of the drum-shaped first, second and third floats (4a, 4b, 4c), and a first connection part (9a) is provided so as to be rotatable around an axis (V) perpendicular to the upper plane of the machine body (2), and a rotatable hydraulic excavator (3) is connected to the first connection part (9a).The upper plane of the machine body (2) is provided with two spat (11) that can reciprocate in the vertical direction, and further includes a rotatable frame part (6) connected to a second connection part (9b) provided at the rear end when viewed from the longitudinal direction of the upper plane of the machine body (2). The frame section (6) is connected to the drum-shaped third float (4c), and the frame section (6) is rotatable about the central axis (S1) in the width direction of the body, and includes a screw section (12) connected to the second connection section (9b) and the connection section of the frame section (6). Furthermore, the drum-shaped first, second and third floats (4a, 4b, 4c) each have an axis section (7) configured along the longitudinal axis (L2) that passes through the center of the float, and a power section is configured so that the drum-shaped first, second and third floats (4a, 4b, 4c) and the axis section (7) rotate integrally, and the axis section (7) is connected to the power section (8). The frame section (6) can rotate up to 20° about the central axis (S1) in the width direction of the body (2), and can stably determine the propulsion direction of the amphibious dredger forward, backward, left and right. This makes it possible to prevent a decrease in movement speed due to a decrease in propulsive force, and enables dredging work to be carried out efficiently.The material used for the helical structure (5) is as described above.

[0029] 1 to 5, an amphibious dredger (1) according to an embodiment of the present invention is provided with first, second and third drum-shaped floats (4a, 4b, 4c) that are provided at the bottom of a body (2) of the amphibious dredger (1) and can rotate independently around a central axis (S1) in the width direction of the body (2). Next, blades (10) are provided toward the central axis (S2) in the width direction of the drum-shaped first, second and third floats (4a, 4b, 4c) as viewed from the front of the body (2), and are formed of spiral structures (5) that are alternately provided clockwise from the right end of the longitudinal direction of the drum-shaped first, second and third floats (4a, 4b, 4c) and counterclockwise from the left end. Further, a power unit (8) for rotating the drum-shaped first, second and third floats (4a, 4b, 4c) is provided at both ends of each of the drum-shaped first, second and third floats (4a, 4b, 4c), and a first connection part (9a) is provided so as to be rotatable around an axis (V) perpendicular to the upper plane of the machine body (2), and a rotatable hydraulic excavator (3) is provided connected to the first connection part (9a).The upper plane of the machine body (4) is provided with two spat (11) that can reciprocate in the vertical direction, and further includes a rotatable frame part (6) connected to a second connection part (9b) provided at the rear end when viewed from the longitudinal direction of the upper plane of the machine body (2). The frame portion (6) is connected to the drum-shaped third float (4c), and the frame portion (6) is rotatable about a central axis (S1) in the width direction of the aircraft body (2), and includes a screw portion (12) connected to the second connection portion (9b) and the connection portion of the frame portion (6). Furthermore, the drum-shaped first, second, and third floats (4a, 4b, 4c) each have a shaft portion (7) configured along the longitudinal axis (L2) that passes through the center of the float, and a power portion (8) is configured so that the drum-shaped first, second, and third floats (4a, 4b, 4c) and the shaft portion (7) rotate integrally. The shaft portion (7) is connected to the power portion (8). In addition, the frame portion (6) can rotate up to 20° about the widthwise central axis (S1) of the body (2), allowing the propulsion direction to be determined stably and preventing a decrease in movement speed due to a decrease in propulsive force, thereby enabling dredging work to be carried out efficiently.The material used for the helical structure (5) is as described above.

[0030] 1 to 5, the blade (10) made of the helical structure (5) has a thickness of 9 mm to 15 mm, and the thickness is preferably within this range. This thickness provides excellent propulsive force and durability.

[0031] Although not shown in the figure, the power unit (8) uses a hydraulic motor, but the power unit (8) is not limited to this embodiment, and various modifications, alterations, and changes can be made within the scope of what is obvious to those skilled in the art. EXAMPLES

[0032] The amphibious dredger of the present invention will be described in more detail below with reference to examples, although the present invention is not limited to the following examples. An amphibious dredger was constructed with reference to an embodiment of the present invention.

[0033] Although not shown, referring to an embodiment of the present invention, the travel speed of the amphibious dredger is about 3 (km / h) on land and about 3 (km / h) on water. The travel speed on soft ground such as a muddy area is also about 3 (km / h). As described above, the amphibious dredger can be operated at a stable speed even on various types of terrain, and since the amphibious dredger according to the present invention has excellent propulsive force, dredging work can be performed without the travel speed of the amphibious dredger decreasing.

[0034] 1 to 5, the amphibious dredger is provided with spat to fix the machine body during dredging work and perform dredging work stably. The present embodiment is not limited to the present embodiment, and various modifications, alterations, and changes can be made within the scope of obvious to those skilled in the art.

[0035] 1 to 5 and the embodiment of the present invention, the blade having the spiral structure has a thickness of 9 mm to 15 mm, and therefore the amphibious dredger can perform dredging work on snow, on ice, in snowy areas, in wetlands, in muddy areas, etc., with high durability.

[0036] Here, the hydraulic excavator used for dredging work is "Product name SK75SR Bucket capacity: 0.28m 3 The hydraulic excavator is not limited to the embodiment, and various modifications, alterations, and changes can be made within the scope of what is obvious to those skilled in the art. [Industrial Applicability]

[0037] The amphibious dredger of the present invention is capable of performing dredging operations in a wide range of terrains, including cold areas such as snow, icy seas, and snowy areas, wetlands, and terrain changed by subsidence caused by liquefaction due to heavy rain or earthquakes, as well as soft ground.Furthermore, the amphibious dredger of the present invention combines excellent moving speed and high durability, thereby providing an amphibious dredger that enables stable dredging operations. [Explanation of symbols]

[0038] 1. Amphibious Dredge 2. Aircraft 3. Hydraulic excavator 4a Drum-shaped first float 4b Drum-shaped second float 4c Drum-shaped third float 5 Spiral structure 6 Frame section 7 Shaft 8 Power section 9a First connection part 9b Second connection 10 Blades 11 Spat 12 Screw section AA AA section L1 Longitudinal axis (airframe) L2 Longitudinal axis (float) S1: The center axis of the aircraft in the width direction S2: The central axis of the width of the drum-shaped first, second and third floats V Vertical axis

Claims

1. An amphibious dredger comprising: The amphibious dredger includes first, second and third drum-shaped floats provided at the bottom of the body of the amphibious dredger and capable of independently rotating around an axis in the width direction of the body; When viewed from the front of the aircraft body, a blade having a spiral structure is provided in the longitudinal direction of each of the drum-shaped first, second, and third floats toward a central axis in the width direction of the drum-shaped first, second, and third floats, A power unit is provided at each end of each of the drum-shaped first, second, and third floats to rotate the drum-shaped first, second, and third floats, respectively; A first connection portion is provided so as to be rotatable about an axis perpendicular to an upper plane of the fuselage, a rotatable hydraulic excavator connected to the first connection portion; The upper surface of the body is provided with two spat that can reciprocate in the up and down direction, A rotatable frame portion connected to a second connection portion provided at a rear end portion when viewed from a longitudinal direction of an upper plane of the airframe, The frame portion is connected to the drum-shaped third float, The frame portion is rotatable about a central axis in a width direction of the airframe, An amphibious dredger comprising a screw portion connected to the second connection portion and the connection portion of the frame portion.

2. 2. The amphibious dredger according to claim 1, wherein the frame portion is rotatable by up to 20 degrees about a central axis in a width direction of the body.

3. 2. An amphibious dredger as set forth in claim 1, wherein the drum-shaped second float has a smaller diameter than the first or third float.

4. 2. An amphibious dredger as claimed in claim 1, wherein the material of the spiral structure is iron.

5. An amphibious dredger as described in claim 1, characterized in that the drum-shaped first, second and third floats are configured along the longitudinal axis that penetrates the center of each of the floats, and a power unit is configured so that the drum-shaped first, second and third floats and the axis rotate integrally, and the axis is connected to the power unit.

6. The amphibious dredger according to claim 1, wherein the blade having the spiral structure has a thickness of 9 mm to 15 mm.

7. 7. An amphibious dredger as claimed in any one of claims 1 to 6, characterized in that the helical structure of the blade is welded to the drum-shaped first, second and third floats, respectively.