Sediment removal tool of sheet pile

Abstract

To provide a sediment removal tool of a sheet pile which can easily remove sediment, and improves work environment.SOLUTION: A sediment removal tool for removing sediment attached to a sheet pile driven into the ground has: a scraping plate for scraping the sediment attached into the sheet pile; a guide rod which is mounted on the scraping plate and has a predetermined length; and a guide mechanism which is installed at the upper part of the sheet pile, and guides the guide rod into the sheet pile.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a soil removal tool for removing soil adhering to a sheet pile driven into the ground. [Background technology]

[0002] Earth retaining work involves driving multiple sheet piles (steel sheet piles) P into the ground and excavating the soil (including mud) in the area surrounded by the sheet piles P to ensure work space for construction work. As shown in Figure 14(a), each sheet pile P has joints P1 at both ends in the left and right direction. As shown in Figure 14(b), multiple sheet piles P are combined in a staggered manner by connecting the joint P1 of one sheet pile P to the joint P1 of another sheet pile P. Furthermore, because each sheet pile P has a roughly U-shaped groove P2 in its cross section, soil and sand tend to adhere to the groove P2. Patent Document 1 relates to sheet pile extraction work that is carried out before the construction work is completed. The jig in Patent Document 1 includes a soil removal tool with a notch and a fixing means such as a wire for fixing the soil removal tool, and the soil removal tool is placed in the groove P2 of the sheet pile P to be extracted, and the soil removal tool is fixed to a fixing member via a wire, etc. In this way, the soil adhering to the groove P2 of the sheet pile P is scraped off at the same time as the sheet pile P is extracted. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Utility Model Application Publication No. 5-73036 Summary of the Invention [Problem to be solved by the invention]

[0004] The above-described soil removal tool is used to remove soil adhering to the grooves P2 of the sheet pile P when the sheet pile P is pulled out of the ground. However, the soil removal tool of Patent Document 1 cannot remove soil adhering to the grooves of the sheet pile P that has been driven into the ground. In conventional earth retaining construction, soil adhering to the grooves of the sheet pile P driven into the ground cannot be removed by large construction machinery such as an excavator because there is a risk of damaging the sheet pile P. Therefore, workers manually remove soil adhering to the grooves of the sheet pile P that has been driven into the ground using a shovel or the like. This manual removal of soil by workers requires a great deal of effort and poses a risk of injury if the scraped soil falls on the worker.

[0005] SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide a tool for removing soil from steel sheet piles that can easily remove soil and improve the working environment. [Means for solving the problem]

[0006] In order to solve the above problem, the invention described in claim 1 of the present application is a soil removal tool for removing soil and sand adhering to sheet piles driven into the ground, characterized in that it comprises a scraping plate for scraping off soil and sand adhering to the inside of the sheet pile, a guide rod of a predetermined length attached to the scraping plate, and a guide mechanism installed on top of the sheet pile for guiding the guide rod into the sheet pile.

[0007] The invention described in claim 2 of the present application is characterized in that the guide rod has a magnetic portion including a magnet on its side, and the guide rod can be moved in the vertical direction by the guide mechanism while the magnetic portion is magnetically attached to the wall surface of the sheet pile.

[0008] The invention described in claim 3 of the present application is characterized in that the scraping plate is inclined so that its tip portion approaches the wall surface of the sheet pile, and when the guide rod moves downward by the guide mechanism, the tip portion scrapes off soil and sand adhering to the wall surface of the sheet pile.

[0009] The invention described in claim 4 of the present application is characterized in that the guide mechanism comprises an abutment member that abuts against the rear surface of the sheet pile and a rod member that abuts against the front surface of the sheet pile, and the abutment member and the rod member abut at the front and rear of the sheet pile, thereby engaging the guide mechanism with the upper part of the sheet pile.

[0010] The invention described in claim 5 of the present application is characterized in that the guide mechanism further includes a rotating member rotatably supported on the rod member, and the rotating member rotates as the guide rod moves downward, guiding the guide rod and the scraping plate toward the wall surface side of the sheet pile. [Effects of the Invention]

[0011] According to the present invention, earth and sand can be easily removed and the working environment can be improved. [Brief explanation of the drawings]

[0012] [Figure 1] FIG. 1 is a front view of a soil / sand removal tool 10 according to the present invention. [Figure 2] FIG. 2 is a side view of the soil / sand S removal tool 10 according to the present invention. [Figure 3] FIG. 3 is a diagram illustrating a soil / sand S remover 10 according to the present invention. [Figure 4] FIG. 4 is an explanatory diagram of the state in which the earth and sand S remover 10 according to the present invention is used. [Figure 5] FIG. 5 is a perspective view showing the appearance of the guide rod 20 and scraping plate 30 according to the present invention. [Figure 6] 6A and 6B are diagrams illustrating magnet sections 24 and 25 according to the present invention, in which FIG. 6A is an enlarged partial view of the area surrounded by the circle C in FIG. 5, and FIG. 6B is a cross-sectional view taken along the line DD in FIG. [Figure 7] 7A and 7B are diagrams illustrating a scraping plate 30 according to the present invention, in which FIG. 7A is an enlarged partial view of the area surrounded by the circle E in FIG. 5, and FIG. 7B is a cross-sectional view taken along the line FF in FIG. [Figure 8]FIG. 8 is a perspective view of the exterior of the guide mechanism 40 according to the present invention as seen from the front. [Figure 9] FIG. 9 is a right side view of the guide mechanism 40 according to the present invention. [Figure 10] FIG. 10 is a plan view of a guide mechanism 40 according to the present invention. [Figure 11] 11A and 11B are diagrams illustrating a guide mechanism 40 according to the present invention, where FIG. 11A is a view taken along the line A in FIG. 2, and FIG. 11B is a cross-sectional view taken along the line BB in FIG. [Figure 12] 12(a) to 12(c) are diagrams illustrating a method for removing earth and sand S from the trench P2 according to the present invention. [Figure 13] 13(a) and 13(b) are schematic cross-sectional views illustrating a method for removing earth and sand S from the trench P2 according to the present invention. [Figure 14] Figure 14 is a diagram explaining the method of connecting sheet piles P, where Figure 14(a) is a front view and a plan view of one sheet pile P, and Figure 14(b) is a front view and a plan view of multiple sheet piles P connected together. [Figure 15] FIG. 15 is a schematic diagram showing the soil S adhering to the groove P2. DETAILED DESCRIPTION OF THE INVENTION

[0013] The present invention will be described in detail below based on the embodiments shown in the drawings. For ease of explanation, a virtual three-dimensional coordinate system (XYZ Cartesian coordinate system) consisting of mutually orthogonal X, Y, and Z axes (XYZ axes) is set in the drawings. For example, for a coordinate axis perpendicular to the plane of the drawing, a black circle within a circle of the coordinate axis indicates that the near side of the plane of the paper is the positive region of the coordinate axis. Furthermore, a cross within a circle of the coordinate axis indicates that the near side of the plane of the paper is the negative region of the coordinate axis. Furthermore, with respect to a front view, the X axis direction may be referred to as the left-right direction, the Y axis direction as the up-down direction, and the Z axis direction as the front-to-back direction.

[0014] First, the overall configuration of the soil removal tool 10 for the sheet pile P (hereinafter referred to as the soil removal tool) will be described.

[0015] FIG. 1 is a front view of a soil removal tool 10 according to the present invention. FIG. 2 is a side view of the soil removal tool 10 according to the present invention. FIG. 3 is a diagram illustrating the soil removal tool 10 according to the present invention. FIG. 4 is an explanatory diagram illustrating the soil removal tool 10 according to the present invention in use. FIG. 15 is a schematic diagram showing soil S adhering to a groove P2. The soil removal tool 10 shown in FIGS. 1 to 4 is used to remove soil S adhering to a groove P2 as shown in FIG. 15. The soil removal tool 10 includes a scraper plate 30 capable of scraping off soil S adhering to the groove P2 of a sheet pile P, a guide rod 20 having a predetermined length attached to the scraper plate 30, and a guide mechanism 40 installed above the sheet pile P to guide the guide rod 20 into the sheet pile P. As shown in FIG. 4, one end of the rod-shaped member 20 of the soil removal tool 10 is fixed to, for example, the bucket of a shovel via a wire or the like. The guide rod 20 inserted into the groove P2 of the sheet pile P is guided by the guide mechanism 40 so as to follow the wall surface P3 of the groove P2, and slides downward along the wall surface P3 due to its own weight or the pressure of the excavator. At that time, the tip 30a provided at the tip of the scraping plate 30 scrapes off the soil S in the groove P2.

[0016] Next, the configuration of the guide rod 20 and the scraping plate 30 will be described.

[0017] FIG. 5 is an external perspective view of the guide rod 20 and scraping plate 30 according to the present invention. As shown in FIG. 5, the guide rod 20 is elongated, with its movement direction being the longitudinal direction (hereinafter also referred to as the Y-axis direction or the up-down direction). It has magnet portions 24 and 25 provided on the side surfaces of the guide rod 20 and magnetically attracted to the wall surface P3 of the groove portion P2, and an annular member 28 provided at the other longitudinal end (upper end) of the guide rod 20 and adapted to engage with a hook suspended from a backhoe. The scraping plate 30 is provided at one longitudinal end (lower end) of the guide rod 20 and scrapes off soil S adhering to the groove portion P2. Hereinafter, each of the components will be made of a steel material such as ordinary carbon steel or alloy steel.

[0018] Guide rod 20 has a generally rectangular cross section, and magnets 24, 25 are fixed by welding or other joining means near the center in the longitudinal direction and near the end on the scraper plate 30 side. The end of guide rod 20 on the scraper plate 30 side is cut at an angle greater than approximately 45 degrees, and scraper plate 30 is joined to this cut surface. Annular member 28 is also joined to the upper end of guide rod 20. Note that guide rod 20 may be hollow.

[0019] FIG. 6 illustrates magnet units 24 and 25 according to the present invention. FIG. 6(a) is an enlarged view of the area surrounded by a circle C in FIG. 5, and FIG. 6(b) is a cross-sectional view taken along the line DD in FIG. 5. As shown in FIG. 6, magnet units 24 and 25 include magnets 24a and 25a and frame members 24b and 25b for securing magnets 24a and 25a to guide rod 20. While neodymium magnets with strong magnetic force are preferred for magnets 24a and 25a, other commercially available magnets may also be used. Furthermore, magnets 24a and 25a have a rectangular shape that is elongated in the Y-axis (vertical) direction and are thinner than guide rod 20. Frame members 24b and 25b are joined to guide rod 20 and have inclinations at both ends in the Y-axis (vertical) direction. Magnets 24a and 25a are fitted into openings in frame members 24b and 25b to hold magnets 24a and 25a. As shown in FIG. 5(b), the magnets 24a and 25a are held by frame members 24b and 25b while protruding from the guide rod 20. The frame member 24b of the magnet section 24 provided near the longitudinal center holds one magnet 24a, while the frame member 25b of the magnet section 25 provided near the end on the scraper plate 30 side holds two magnets 25a. This is because a load is applied to the scraper plate 30 when scraping off soil and sand S, so the magnetic force on the scraper plate 30 side needs to be increased. The number of magnets 24a and 25a can be changed as needed. Furthermore, the shape of the frame members 24b and 25b can be changed as needed depending on the number of magnets 24a and 25a.

[0020] FIG. 7 illustrates a scraper plate 30 according to the present invention. FIG. 7(a) is an enlarged view of the area circled E in FIG. 5, and FIG. 7(b) is a cross-sectional view taken along the line F-F in FIG. 5. As shown in FIG. 7, the scraper plate 30 is a generally rectangular plate, and as described above, it is joined to the guide rod 20 at an angle greater than 45 degrees. As shown in FIG. 6(b), the scraper plate 30 is inclined downward toward the wall surface P3 (rear end side) of the groove P2, and has a tip 30a (encircled portion in the figure) protruding from the guide rod 20. The length of the tip 30a in the front-rear direction is approximately equal to the length of the magnet portions 24 and 25 in the front-rear direction. A buffer member 30b is joined between the end opposite the tip 30a (the front end of the scraper plate 30) and the main body 20.

[0021] Next, the configuration of the guide mechanism 40 will be described.

[0022] FIG. 8 is a front perspective view of the guide mechanism 40 according to the present invention. FIG. 9 is a right side view of the guide mechanism 40 according to the present invention, and FIG. 10 is a plan view of the guide mechanism 40 according to the present invention. FIG. 11 is a diagram illustrating the guide mechanism 40 according to the present invention, with FIG. 11(a) being a view taken along the arrow A in FIG. 2 and FIG. 11(b) being a cross-sectional view taken along the line B-B in FIG. 4. As shown in FIGS. 8 to 10, the guide mechanism 40 includes a locking member 42 formed by combining a pair of generally U-shaped members back to back, a rod member 44 joined to the front end of the locking member 42, and a rotating member 46 rotatably supported by the rod member 44. The locking member 42 includes an abutting member 42a that abuts against the outer side of the wall surface P3 of the groove portion P2, an opening 42b through which the guide rod 20 is inserted, and a gripping member 42c that is gripped by an operator. As shown in Figure 7, the guide mechanism 40 is engaged with the upper end of the sheet pile P by the abutment member 42a abutting against the outside of the wall surface P3 and the rod member 44 abutting against the front ends of both side surfaces P4 of the sheet pile P. When the guide rod 20 is inserted into the opening 42b as shown in Figure 11(b), the rotating member 46 rotates (rotates) in the direction of arrow H as the guide rod 20 moves downward, thereby guiding the guide rod 20 downward along the wall surface P3 and restricting movement of the guide rod 20 in the front-to-rear direction. The left-to-right length of the engaging member 42 is smaller than the width of the groove P2, and the left-to-right length of the rotating member 46 is greater than the width of the groove P2.

[0023] Next, a method for removing the soil S from the groove P2 using the soil removal tool 10 will be described.

[0024] FIG. 12 is a diagram illustrating a method for removing soil S from a trench P2 according to the present invention. FIGS. 12(a) to 12(c) show a step-by-step method for removing soil S from a trench P2. FIG. 13 is a schematic cross-sectional view illustrating a method for removing soil S from a trench P2 according to the present invention. Also, FIG. 13 is a cross-sectional view of FIG. 12, with FIG. 13(a) being a cross-sectional view taken along line II of FIG. 12(b), and FIG. 13(b) being a cross-sectional view taken along line JJ of FIG. 12(c). As shown in FIG. 12(a), a guide rod 20 is inserted into an opening 42b of a guide mechanism 40 engaged with the upper end of the sheet pile P. The guide rod 20 is suspended from the bucket of the excavator via a hook attached to a circular member 28, and is pushed downward by its own weight or by the pressure of the excavator. At this time, the guide rod 20 is restricted from moving forward and backward by the guide mechanism 40, and moves downward along the wall surface P3 of the trench P2.

[0025] As the guide mechanism 40 moves downward along the wall surface P3 of the groove P2 as shown in FIG. 12(b), the tip 30a of the scraper plate 30 scrapes off the soil S in the groove P2 as shown in FIG. 13(a). At this time, the front-to-rear length of the magnet portions 24, 25 protruding from the guide rod 20 is approximately equal to the front-to-rear length of the tip 30a protruding from the guide rod 20. This allows the main body 20 to slide along the wall surface P3 while magnetically attached to the groove P2, and efficiently scrapes off the soil S adhering to the wall surface P3. Furthermore, soil S can be prevented from adhering to the magnets 24a, 25a. Furthermore, the gap between the end opposite the tip 30a (the front end of the scraper plate 30) and the guide rod 20 is filled with the buffer member 30b, preventing soil S from adhering to the gap.

[0026] 12(c), when the tip 30a reaches near the lower end of the sheet pile P, in addition to the magnet 25 provided near the lower end of the guide rod 20, the magnet 24 provided near the center in the vertical direction is also magnetically attracted to the wall surface P3 of the groove P2. This prevents the tip 30a of the guide rod 20 and the scraping plate 30 from moving away from the wall surface P3, making it possible to remove soil and sand S from the entire wall surface P3 of the sheet pile P. [Industrial Applicability]

[0027] As described above, according to the present invention, soil and sand S can be easily removed from the entire wall surface P3 of the sheet pile P, and the working environment can be improved because there is no need for workers to manually remove the soil and sand. [Explanation of symbols]

[0028] P Sheet Pile P1 joint P2 groove P3 Wall P4 side S. Soil 10 Soil removal tools 20 Guide rod 24, 25 Magnet section 24a, 25a magnets 24b, 25b Frame members 28 Circular member 30 scraping board 30a Tip 30b Cushioning material 40 Guide mechanism 42 Locking member 42a Contact member 42b opening 42c gripping member 44 Bar member 46 Rotating member

Claims

1. A soil removal tool for removing soil and sand adhering to a sheet pile driven into the ground, a scraping plate capable of scraping off soil and sand adhering to the sheet pile; a guide rod having a predetermined length attached to the scraping plate; a guide mechanism installed on the upper part of the sheet pile and guiding the guide rod into the sheet pile; A sheet pile soil removal tool characterized by having:

2. The guide rod has a magnet portion on its side surface, The guide rod is characterized in that it can be moved up and down by the guide mechanism with the magnet portion magnetically attached to the wall surface of the sheet pile. A tool for removing soil and sand from a sheet pile according to claim 1.

3. The scraping plate is inclined so that its tip portion approaches the wall surface of the sheet pile, and when the guide rod moves downward by the guide mechanism, the tip portion scrapes off the soil and sand adhering to the wall surface of the sheet pile. A tool for removing soil and sand from a sheet pile according to claim 1 or 2.

4. the guide mechanism includes a contact member that contacts a rear surface of the sheet pile and a rod member that contacts a front surface of the sheet pile, The abutment member and the rod member abut on the front and rear of the sheet pile, thereby engaging the guide mechanism with the upper part of the sheet pile. A tool for removing soil and sand from a sheet pile according to claim 3.

5. the guide mechanism further includes a rotating member rotatably supported on the rod member, The rotating member rotates as the guide rod moves downward, guiding the guide rod and the scraping plate toward the wall surface of the sheet pile. A tool for removing soil and sand from a sheet pile according to claim 4.

Images