Weed control sheet fastener, weed control sheet fastening device, and weed control sheet fastening method

Abstract

The present invention provides a weed control sheet fixing device, a weed control sheet fixing apparatus, and a weed control sheet fixing method that enable the weed control sheet to be fixed to the laying surface without having to drive fixing pins into the ground. [Solution] The weed control sheet fixing device 30 is for fixing the weed control sheet S to a flat plate 20 that is placed on the laying surface 90, 90A of the weed control sheet S. The weed control sheet fixing device 30 comprises a receiving frame 31 and a pressing plate 32 in which the flat plate 20 is placed between them, a first washer 33A and a second washer 33B which are placed so as to sandwich the weed control sheet S between the pressing plate 32, and a first bolt 34A and a first nut 35A and a second bolt 34B and a second nut 35B which are placed between the receiving frame 31 and the pressing plate 32 and the weed control sheet S sandwiched between the pressing plate 32 and the first washer 33A and the second washer 33B, and fix the receiving frame 31 and the first washer 33A and the second washer 33B.

Description

Technical Field

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[0001] The present invention relates to a weed control sheet fixing tool and the like for fixing a weed control sheet to a weight placed on the laying surface of the weed control sheet.

Background Art

[0002] Conventionally, when laying a weed control sheet on the side of a road or the like to prevent the growth of vegetation from the ground or the like, the weed control sheet was fixed to the laying surface by piercing a pin made of iron or the like into the ground together with the weed control sheet (see Patent Document 1).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, in the prior art, when piercing the pin for fixing the weed control sheet into the ground, there was a problem that the pin contacted a power transmission cable or the like buried in the ground and caused electric leakage.

[0005] An object of the present invention is to provide a weed control sheet fixing tool, a weed control sheet fixing device, and a method for fixing a weed control sheet that can fix the weed control sheet to the laying surface without piercing a pin for fixing the weed control sheet into the ground.

Means for Solving the Problems

[0006] The problems to be solved by the present invention are as described above. Next, means for solving these problems will be described.

[0007] In other words, the weed control sheet fixing device of the present invention is a weed control sheet fixing device for fixing a weed control sheet to a weight placed on the surface on which the weed control sheet is laid, and comprises: first and second mounting members in which the weight is positioned between; a sheet clamping member positioned to sandwich the weed control sheet between the second mounting member and the weed control sheet; and a fixing member positioned between the first mounting member and the second mounting member, and fixing the first mounting member and the sheet clamping member in a state where the weight is positioned between the first mounting member and the second mounting member and the weed control sheet is sandwiched between the second mounting member and the sheet clamping member.

[0008] With this configuration, the weed control sheet can be fixed to the installation surface without having to drive the pins used to secure the sheet into the ground.

[0009] Furthermore, the weed control sheet fastener of the present invention may be a weed control sheet fastener in which the fastening member has a bolt.

[0010] This configuration allows the weed control sheet to be securely fixed to a heavy object placed on the surface where the sheet is laid.

[0011] Furthermore, the weed control sheet fixing device of the present invention is a weed control sheet fixing device in which the first mounting member has a flat plate-shaped contact portion that can contact a heavy object, a first upright portion that rises from the first end of the contact portion, a first extension portion that is bent at the tip of the first upright portion and extends to the opposite side of the contact portion, a second upright portion that rises from the second end of the contact portion, and a second extension portion that is bent at the tip of the second upright portion and extends to the opposite side of the contact portion, the second mounting member is a flat plate-shaped member having first and second ends that can be fixed to the first and second extension portions respectively, the sheet clamping member has first and second sheet clamping members that are arranged to clamp the weed control sheet between the first and second ends of the second mounting member, and the fixing member holds the weed control sheet between the first end of the second mounting member and First sheet clamping member With the first extension and First sheet clamping member A first fixing member that secures the weed control sheet to the second end of the second mounting member and Second sheet clamping member With the second extension and Second sheet clamping memberA weed control sheet fastener may have a second fixing member for fixing the and the sheet.

[0012] With this configuration, the weed control sheet can be fixed to a heavy object placed on the surface on which the weed control sheet is laid without damaging the object.

[0013] Furthermore, the weed control sheet fixing device of the present invention comprises a weight placed on the surface on which the weed control sheet is laid, and the above-mentioned weed control sheet fixing device for fixing the weed control sheet to the weight.

[0014] With this configuration, the weed control sheet can be fixed to the installation surface without having to drive the pins used to secure the sheet into the ground.

[0015] Furthermore, the weed control sheet fixing device of the present invention may be a weed control sheet fixing device in which the weight body is a flat plate-shaped weight body.

[0016] With this configuration, when the weed control sheet is fixed to the weight, the weed control sheet does not bulge upward due to the weight.

[0017] Furthermore, the method for fixing the weed control sheet is a method for fixing a weed control sheet to a weight placed on the surface on which the weed control sheet is laid, using the above-described weed control sheet fixing device, and includes the steps of: placing the weight on the surface on which the weed control sheet is laid; positioning the weight between a first mounting member and a second mounting member; positioning the weed control sheet on the second mounting member; positioning a sheet clamping member so as to sandwich the weed control sheet between the second mounting member and the weed control sheet; and fixing the first mounting member and the sheet clamping member with a fixing member while the weight is positioned between the first mounting member and the second mounting member and the weed control sheet is sandwiched between the second mounting member and the sheet clamping member.

[0018] With this configuration, the weed control sheet can be fixed to the installation surface without having to drive the pins used to secure the sheet into the ground.

[0019] Also, in the method for fixing the weed control sheet, in the above-described method for fixing the weed control sheet, the fixing member has a bolt, and before arranging the weed control sheet, the bolt is temporarily fixed to the first and second mounting members so as to protrude from the second mounting member; after arranging the weed control sheet, by hitting the weed control sheet toward the second mounting member, a step of forming a through hole in the weed control sheet with the bolt; and a step of removing the temporarily fixed bolt, and in the step of fixing the first mounting member and the first sheet clamping member, the first mounting member and the first sheet clamping member are fixed with the bolt passed through the through hole, which may be a method for fixing the weed control sheet.

[0020] With such a configuration, it is not necessary to previously provide a through hole for inserting the bolt in the weed control sheet.

Effects of the Invention

[0021] According to the weed control sheet fixing tool, the weed control sheet fixing device, and the method for fixing the weed control sheet according to the present invention, the weed control sheet can be fixed to the laying surface without piercing the fixing pin for the weed control sheet into the ground.

Brief Description of the Drawings

[0022] [Figure 1] Plan view showing a state where a weed control sheet is laid on a flat laying surface using the weed control sheet fixing device according to an embodiment of the present invention [Figure 2] Cross-sectional view taken along line A-A of FIG. 1 [Figure 3] Exploded perspective view of the weed control sheet fixing tool according to an embodiment of the present invention [Figure 4] Schematic view showing a step of forming a through hole in a weed control sheet using the weed control sheet fixing tool according to an embodiment of the present invention, (a) is a view showing a state where a receiving frame and a pressing plate are temporarily fixed with a bolt, (b) is a view showing a state where the weed control sheet placed on the pressing plate is hit, (c) is a view showing a state where the bolt protrudes from the weed control sheet, and (d) is a view showing a state where the temporary fixing between the receiving frame and the pressing plate is released [Figure 5]The figure shows a state in which a weed control sheet is laid on an inclined surface using the weed control sheet fixing device according to an embodiment of the present invention; (a) is a plan view showing the same state, and (b) is a cross-sectional view of (a) at BB. [Modes for carrying out the invention]

[0023] The following describes the weed control sheet fixing device 30, the weed control sheet fixing device 10, and the method for fixing the weed control sheet S according to embodiments of the present invention with reference to the drawings.

[0024] First, we will describe the weed control sheet fixing device 10 equipped with a weed control sheet fixing device 30. Note that the weed control sheet fixing device 10 is not limited to the device described below.

[0025] As shown in Figures 1 and 2, the weed control sheet fixing device 10 is a device for fixing the weed control sheet S to the laying surface 90 by fixing the weed control sheet fixing device 30, which holds the weed control sheet S, to a flat plate 20 (an example of a "weight body").

[0026] The weed control sheet S, which is fixed to the laying surface 90 by the weed control sheet fixing device 10, is, for example, a weed control sheet having a layer of modified asphalt and a layer of high-density polyester long-fiber nonwoven fabric. The thickness of the weed control sheet S is, for example, 2 to 5 millimeters. The weed control sheet S is, for example, made by connecting multiple strip-shaped sheets having a predetermined width (for example, 1.0 meter to 1.1 meters) and length (for example, 2.0 meters to 3.0 meters) to form a single sheet. However, the material and dimensions of the weed control sheet S are not limited to these. For example, it may be made using other chemical fibers or natural fibers. The weed control sheet S may also be called a mat, and may be distributed as tile-shaped pieces of a predetermined size.

[0027] The weed control sheet fixing device 10 comprises a flat plate 20 and a weed control sheet fixing device 30.

[0028] As shown in Figures 1 and 2, the flat plate 20 is a weight placed on the laying surface 90 of the weed control sheet S. The flat plate 20 is a flat weight having a predetermined weight (for example, 6 to 24 kilograms). The flat plate 20 is a member formed with a predetermined thickness or less (for example, 30 to 60 millimeters). By forming the flat plate 20 with a predetermined thickness or less, it is possible to prevent the weed control sheet S from rising excessively upward due to the thickness of the flat plate 20 when laying the weed control sheet S on the laying surface 90. Furthermore, in order to prevent the weed control sheet S from rising, it is not necessary to excavate the laying surface 90 of the weed control sheet S and place the flat plate 20 on it. The planar shape of the flat plate 20 may be, for example, a square (for example, a 300 mm x 300 mm square) or a rectangle (for example, a 600 mm x 300 mm rectangle). The flat plate 20 is made of a concrete member. The material and dimensions of the flat plate 20 are not limited to those shown. For example, it may be made of a metal (e.g., iron, stainless steel, or lead). In this embodiment, the weight placed on the laying surface 90 of the weed control sheet S is made of a single flat plate, but this is not limited to that, and for example, it may be made of multiple rod-shaped weights arranged in parallel.

[0029] As shown in Figures 1 to 3, the weed control sheet fixing device 30 is a fixing device for fixing the weed control sheet S to a flat plate 20 placed on the laying surface 90 of the weed control sheet S. The weed control sheet fixing device 30 may include a receiving frame 31 (an example of a "first mounting member"), a pressing plate 32 (an example of a "second mounting member"), a first washer 33A (an example of a "sheet clamping member" or "first sheet clamping member"), a second washer 33B (an example of a "sheet clamping member" or "second sheet clamping member"), a first bolt 34A and a first nut 35A (an example of a "fixing member" or "first fixing member"), and a second bolt 34B and a second nut 35B (an example of a "fixing member" or "first fixing member").

[0030] The receiving frame 31 is a member attached to the flat plate 20, and more specifically, it is a member attached to the flat plate 20 so as to abut against the mounting surface 20a (Figure 3) of the flat plate 20 which is placed on the laying surface 90 of the weed control sheet S. As shown in Figures 2 and 3, the receiving frame 31 is a member formed by shaping a long, rectangular member into a concave form. The receiving frame 31 may have a contact portion 31a, a first upright portion 31b, a first extension portion 31c, a second upright portion 31d, and a second extension portion 31e.

[0031] The contact portion 31a is a flat plate-shaped part that comes into contact with the mounting surface 20a of the flat plate 20 when the receiving frame 31 is attached to the flat plate 20. The longitudinal length of the contact portion 31a may be approximately the same as the length of one side of the mounting surface 20a of the flat plate 20. The widthwise length of the contact portion 31a may be a length that allows it to come into contact with the mounting surface 20a of the flat plate 20 (for example, 40 to 50 millimeters).

[0032] The first upright portion 31b is a portion that rises from the first end of the contact portion 31a (the right end of the contact portion 31a in Figure 2), and is a portion that can come into contact with the first side surface 20b of the flat plate 20 when the receiving frame 31 is attached to the flat plate 20. The length of the first upright portion 31b in the upright direction may be approximately the same as the thickness of the flat plate 20 to which it is attached. Note that when the receiving frame 31 is attached to the flat plate 20, it is not necessarily required that the first upright portion 31b come into contact with the first side surface 20b of the flat plate 20.

[0033] The first extension portion 31c is the portion that is bent at the tip of the first upright portion 31b and extends to the side opposite to the contact portion 31a. The first extension portion 31c may be a flat plate-shaped portion formed parallel to the contact portion 31a. The first extension portion 31c may be the portion that extends to the side opposite to where the flat plate 20 is placed (the right side in Figure 2) so that it is substantially flush with the plane 20c of the flat plate 20 (the plane opposite to the mounting surface 20a of the flat plate 20) when the receiving frame 31 is attached to the flat plate 20. The first extension portion 31c may be formed so that the flat plate-shaped portion of the first extension portion 31c is located above or below the plane 20c of the flat plate 20 when the receiving frame 31 is attached to the flat plate 20. The first extension portion 31c may be composed of a plane of a size on which the first washer 33A can be placed. A first bolt hole h1 is formed in the central portion of the first extension 31c, through which the first bolt 34A can be inserted.

[0034] The second upright portion 31d is a portion that rises from the second end of the contact portion 31a (the left end of the contact portion 31a in Figure 2), and is a portion that can come into contact with the second side surface 20d of the flat plate 20 when the receiving frame 31 is attached to the flat plate 20. The second upright portion 31 is formed parallel to the first upright portion 31b so as to face the first upright portion 31b. The length of the second upright portion 31d in the upright direction may be approximately the same as the thickness of the flat plate 20 to which it is attached. Note that when the receiving frame 31 is attached to the flat plate 20, it is not necessarily required that the second upright portion 31d come into contact with the second side surface 20d of the flat plate 20.

[0035] The second extension portion 31e is the portion that is bent at the tip of the second upright portion 31d and extends to the side opposite to the contact portion 31a. The second extension portion 31e may be a flat plate-like portion formed parallel to the contact portion 31a. The second extension portion 31e may be the portion that extends to the side opposite to where the flat plate 20 is placed (the left side in Figure 2) so that it is substantially flush with the plane 20c of the flat plate 20 (the plane opposite to the mounting surface 20a of the flat plate 20) when the receiving frame 31 is attached to the flat plate 20. The second extension portion 31e may be formed so that the flat plate-like portion of the second extension portion 31e is positioned above or below the plane 20c of the flat plate 20 when the receiving frame 31 is attached to the flat plate 20. The second extension portion 31e may be composed of a plane of a size on which the second washer 33B can be placed. A second bolt hole h2 is formed in the central portion of the second extension 31e, through which the second bolt 34B can be inserted.

[0036] As shown in Figures 2 and 3, the retaining plate 32 is a member attached to the flat plate 20, and more specifically, it is a member attached to the flat plate 20 so as to be able to abut against the flat surface 20c (the surface opposite to the mounting surface 20a of the flat plate 20) of the flat plate 20 which is placed on the laying surface 90 of the weed control sheet S. Note that when the retaining plate 32 is attached to the flat plate 20, it is not necessarily required that the retaining plate 32 abut against the flat surface 20c of the flat plate 20. The retaining plate 32 may be a long, flat member. The length of the retaining plate 32 in the longitudinal direction may be about the same as the length of the contact portion 31a of the receiving frame 31 in the longitudinal direction, and the length of the first extension portion 31c and the second extension portion 31e of the receiving frame 31. The length of the retaining plate 32 in the width direction may be about the same as the length of the contact portion 31a of the receiving frame 31 in the width direction. The retaining plate 32 has a first end 32a (the right end in Figure 2) and a second end 32b (the left end in Figure 2), which can be fixed to the first extension 31c and the second extension 31e of the receiving frame 31, respectively.

[0037] The first end portion 32a is the part that abuts against the first extension portion 31c of the receiving frame 31 when the retaining plate 32 is attached to the flat plate 20. However, it is not always necessary for the first end portion 32a to abut against the first extension portion 31c of the receiving frame 31 when the retaining plate 32 is attached to the receiving frame 31. The first end portion 32a has a third bolt hole h3 through which the first bolt 34A can be inserted. The first end portion 32a may be fixed to the first extension portion 31c of the receiving frame 31 by being bolted with the first bolt 34A when the retaining plate 32 is attached to the flat plate 20. The second end portion 32b is the part that abuts against the second extension portion 31e of the receiving frame 31 when the retaining plate 32 is attached to the flat plate 20. However, it is not always necessary for the second end portion 32b to abut against the second extension portion 31e of the receiving frame 31 when the retaining plate 32 is attached to the receiving frame 31. A fourth bolt hole h4 is formed in the second end portion 32b through which a second bolt 34B can be inserted. The second end portion 32b may be fixed to the second extension portion 31e of the receiving frame 31 by being bolted with the second bolt 34B when the retaining plate 32 is attached to the flat plate 20.

[0038] As shown in Figures 2 and 3, the first washer 33A is a member positioned to sandwich the weed control sheet S between itself and the first end 32a of the retaining plate 32 when the weed control sheet S is held by the weed control sheet fastener 30. The first washer 33A may be a flat, circular member. However, the first washer 33A is not limited to a circular member; it may be made of any member that can be positioned to sandwich the weed control sheet S between itself and the first end 32a of the retaining plate 32, for example, a polygonal member. A fifth bolt hole h5 is formed in the center of the first washer 33A through which the first bolt 34A can be inserted. The first washer 33A is bolted to the first end 32a of the retaining plate 32 by the first bolt 34A, thereby sandwiching the weed control sheet S together with the first end 32a of the retaining plate 32.

[0039] The second washer 33B is a component positioned to sandwich the weed control sheet S between itself and the second end 32b of the retaining plate 32 when the weed control sheet S is held by the weed control sheet fastener 30. The second washer 33B may be a flat, circular component. However, the second washer 33B is not limited to a circular component; it may be made of any component that can be positioned to sandwich the weed control sheet S between itself and the second end 32b of the retaining plate 32, for example, a polygonal component. A sixth bolt hole h6 is formed in the center of the second washer 33B through which the second bolt 34B can be inserted. The second washer 33B is bolted to the second end 32b of the retaining plate 32 by the second bolt 34B, thereby sandwiching the weed control sheet S together with the second end 32b of the retaining plate 32.

[0040] As shown in Figures 2 and 3, the first bolt 34A and the first nut 35A are fixing members that fix the receiving frame 31 and the first washer 33A with the flat plate 20 positioned between the receiving frame 31 and the retaining plate 32, and the weed control sheet S sandwiched between the retaining plate 32 and the first washer 33A. The first bolt 34A and the first nut 35A fix the first extension 31c of the receiving frame 31 and the first washer 33A with the weed control sheet S sandwiched between the first end 32a of the retaining plate 32 and the first washer 33A. When fixing the weed control sheet fixing device 30 to the flat plate 20, the first bolt 34A is inserted through the first bolt hole h1 of the first extension 31c of the receiving frame 31, the third bolt hole h3 of the first end 32a of the retaining plate 32, and the fifth bolt hole h5 of the first washer 33A. The first nut 35A may be welded to the surface of the first extension 31c of the receiving frame 31 opposite to the side to which the first end 32a of the retaining plate 32 is attached, where the opening portion of the first bolt hole h1 is formed.

[0041] The second bolt 34B and the second nut 35B are fixing members that fix the receiving frame 31 and the second washer 33B with the flat plate 20 positioned between the receiving frame 31 and the retaining plate 32, and the weed control sheet S sandwiched between the retaining plate 32 and the second washer 33B. The second bolt 34B and the second nut 35B fix the second extension 31e of the receiving frame 31 and the second washer 33B with the weed control sheet S sandwiched between the second end 32b of the retaining plate 32 and the second washer 33B. When fixing the weed control sheet fixing device 30 to the flat plate 20, the second bolt 34B is inserted through the second bolt hole h2 of the second extension 31e of the receiving frame 31, the fourth bolt hole h4 of the second end 32b of the retaining plate 32, and the sixth bolt hole h6 of the second washer 33B. The second nut 35B may be welded to the second extension 31e of the receiving frame 31 on the side opposite to the side to which the second end 32b of the retaining plate 32 is attached, in the portion where the opening of the second bolt hole h2 is formed.

[0042] In this embodiment, a first bolt 34A and a first nut 35A, and a second bolt 34B and a second nut 35B are used as fixing members to secure the receiving frame 31 to the first washer 33A and the second washer 33B. However, the invention is not limited to these, and any fixing member capable of securing the receiving frame 31 to the first washer 33A and the second washer 33B while the flat plate 20 is placed between the receiving frame 31 and the retaining plate 32, and the weed control sheet S is sandwiched between the retaining plate 32 and the first washer 33A and the second washer 33B, may be used, for example, a cotter pin. Furthermore, if screw threads are formed inside at least the first bolt hole h1 and the second bolt hole h2 of the receiving frame 31, the fixing members may consist only of the first bolt 34A and the second bolt 34B. Furthermore, the receiving frame 31 and the first washer 33A and the second washer 33B may be fixed by inserting the first bolt 34A and the second bolt 34B from the receiving frame 31 side (lower side) toward the first washer 33A and the second washer 33B side (upper side). In this case, the first nut 35A and the second nut 35B will be provided on the first washer 33A and the second washer 33B side.

[0043] Next, a method for fixing the weed control sheet S to the flat plate 20 placed on the laying surface 90 of the weed control sheet S using the weed control sheet fixing device 30 will be described. Note that the method for fixing the weed control sheet S is not limited to the following steps. Also, the steps described below are not limited to a specific order.

[0044] First, we will explain how to fix the weed control sheet S when laying it on a flat surface 90. In the following explanation, we will describe the case where multiple strip-shaped weed control sheets Sa (Figure 4) are connected to form a single weed control sheet S.

[0045] When laying the weed control sheet S on a flat laying surface 90, a flat plate 20 is placed on each of the following laying surfaces 90: the third end S3 (right end in Figure 1) of the weed control sheet S on the laying surface 90, the fourth end S4 (left end in Figure 1) of the weed control sheet S on the laying surface 90, and the central part of the weed control sheet S on the laying surface 90 (an example of the "step of placing a heavy object on the laying surface").

[0046] When the flat plate 20 is placed on the laying surface 90, the flat plate 20 is positioned between the receiving frame 31 and the retaining plate 32 (an example of the "step of positioning the heavy object between the first mounting member and the second mounting member"). Here, the receiving frame 31 is fitted onto the flat plate 20 so that it contacts the mounting surface 20a of the flat plate 20. The retaining plate 32 is also placed on the flat plate 20 so that it contacts the plane 20c of the flat plate 20 opposite to the mounting surface 20a, and its first end 32a contacts the first extension 31c of the receiving frame 31, and its second end 32b contacts the second extension 31e of the receiving frame 31. As a result, the flat plate 20 is positioned between the receiving frame 31 and the retaining plate 32. Note that as long as the flat plate 20 is positioned between the receiving frame 31 and the retaining plate 32, it is not necessary for the flat plate 20 to be fitted onto the receiving frame 31. In other words, the first upright portion 31b of the receiving frame 31 does not have to contact the first side surface 20b of the flat plate 20, and the second upright portion 31d of the receiving frame 31 does not have to contact the second side surface 20d of the flat plate 20. Similarly, the retaining plate 32 does not have to contact the plane 20c of the flat plate 20.

[0047] Once the flat plate 20 is positioned between the receiving frame 31 and the retaining plate 32, the first bolt 34A and the second bolt 34B are temporarily fixed to the receiving frame 31 and the retaining plate 32 so that they protrude from the retaining plate 32, as shown in Figure 4(a) (an example of the "step of temporarily fixing bolts to the first and second mounting members so that they protrude from the second mounting member before positioning the weed control sheet"). Specifically, the first bolt 34A and the second bolt 34B may be temporarily fixed to the receiving frame 31 and the retaining plate 32 by inserting the first bolt 34A into the first bolt hole h1 of the first extension 31c of the receiving frame 31 and the third bolt hole h3 of the first end 32a of the retaining plate 32, and inserting the second bolt 34B into the second bolt hole h2 of the second extension 31e of the receiving frame 31 and the fourth bolt hole h4 of the second end 32b of the retaining plate 32.

[0048] Once the first bolt 34A and the second bolt 34B are temporarily fixed to the receiving frame 31 and the retaining plate 32, a single strip-shaped weed control sheet Sa that constitutes the weed control sheet S is placed on the upper surface of the retaining plate 32, as shown in Figure 4(b) (an example of the "step of placing the weed control sheet on the second mounting member"). Specifically, the weed control sheet Sa is placed on the upper surface of the retaining plate 32 so as to cover the first bolt 34A and the second bolt 34B that protrude from the retaining plate 32.

[0049] When the weed control sheet S is placed on top of the retaining plate 32, as shown in Figures 4(b) and (c), the weed control sheet Sa is struck toward the retaining plate 32, thereby forming through holes h7 (see Figure 4(d)) in the weed control sheet Sa with the first bolt 34A or the second bolt 34B (an example of "a process of forming through holes in the weed control sheet with bolts by striking the weed control sheet toward the second mounting member after the weed control sheet has been placed"). Specifically, in the weed control sheet Sa placed on top of the retaining plate 32, the area around the raised portion by the first bolt 34A or the second bolt 34B may be struck with a hammer or the like (not shown) to cause the first bolt 34A or the second bolt 34B to protrude from the weed control sheet Sa, thereby forming through holes h7 in the weed control sheet Sa. Here, the through holes h7 are holes through which the first bolt 34A or the second bolt 34B is inserted when fixing the weed control sheet Sa to the weed control sheet fixing device 30. By temporarily fixing the first bolt 34A or the second bolt 34B, through-holes h7 are formed in the weed control sheet Sa, eliminating the need to use a weed control sheet Sa with pre-formed through-holes h7. Furthermore, the weed control sheet Sa can be positioned at any location and fixed to the flat plate 20 (the position of the weed control sheet Sa is not restricted by the position of the weed control sheet fixing device 10).

[0050] As shown in Figure 4(c), when the first bolt 34A or the second bolt 34B is exposed from the weed control sheet Sa, the temporarily fixed first bolt 34A or the second bolt 34B is removed from the receiving frame 31 and the retaining plate 32, as shown in Figure 4(d) (an example of the "step of removing temporarily fixed bolts"). This creates a through hole h7 in the weed control sheet Sa through which the first bolt 34A or the second bolt 34B can be inserted.

[0051] When the first bolt 34A and the second bolt 34B are removed from the receiving frame 31 and the retaining plate 32, the first washer 33A and the second washer 33B are placed on the weed control sheet Sa so as to sandwich the weed control sheet Sa between the first washer 33A and the second washer 33B and the retaining plate 32 (an example of the "step of placing the sheet clamping member so as to sandwich the weed control sheet between the second mounting member"). Specifically, the first washer 33A through which the first bolt 34A is inserted may be placed in a position on the weed control sheet Sa that abuts against the first end 32a of the retaining plate 32, and the second washer 33B through which the second bolt 34B is inserted may be placed in a position on the weed control sheet Sa that abuts against the second end 32b of the retaining plate 32. At this time, the first bolt 34A may be inserted through the first bolt hole h1 of the first extension 31c of the receiving frame 31, the third bolt hole h3 of the first end 32a of the retaining plate 32, the through hole h7 of the weed control sheet S, and the fifth bolt hole h5 of the first washer 33A, while the second bolt 34B may be inserted through the second bolt hole h2 of the second extension 31e of the receiving frame 31, the fourth bolt hole h4 of the second end 32b of the retaining plate 32, the through hole h7 of the weed control sheet S, and the sixth bolt hole h6 of the second washer 33B. This places the flat plate 20 between the receiving frame 31 and the retaining plate 32, and sandwiches the weed control sheet Sa between the retaining plate 32 and the first washer 33A and the second washer 33B.

[0052] Once the first washer 33A and the second washer 33B are placed on the weed control sheet Sa, the receiving frame 31 and the first washer 33A and the second washer 33B are fixed together by the first bolt 34A and the second bolt 34B (an example of "a process in which a heavy object is placed between the first mounting member and the second mounting member, and the weed control sheet is sandwiched between the second mounting member and the sheet clamping member, and the first mounting member and the sheet clamping member are fixed together by a fixing member"). Specifically, the receiving frame 31 and the first washer 33A and the second washer 33B may be fixed together by bolting with the first bolt 34A and the first nut 35A, and by bolting with the second bolt 34B and the second nut 35B. In this way, the weed control sheet Sa is fixed to the flat plate 20 which is placed on the laying surface 90 of the weed control sheet Sa.

[0053] Once the weed control sheet Sa is fixed to the flat plate 20, another strip-shaped weed control sheet Sa that makes up the weed control sheet S may be connected to the weed control sheet Sa fixed to the flat plate 20. Once another weed control sheet Sa is connected to the weed control sheet Sa fixed to the flat plate 20, the later connected weed control sheet Sa is fixed to the flat plate 20 according to the above process. Furthermore, the fixing of the weed control sheet Sa to the flat plate 20 and the connection of other weed control sheets Sa may be repeated until the weed control sheet Sa is fixed to all the flat plates 20 placed on the weed control sheet S laying surface 90.

[0054] The weed control sheet S is fixed to all the flat plates 20 placed on the laying surface 90, that is, once the weed control sheet S is fixed to all the flat plates 20 placed on the laying surface 90, as shown in Figure 1, the first end S1 (upper end in Figure 1) and the second end S2 (lower end in Figure 1) of the weed control sheet S may be heat-welded to the first concrete section 91 provided at the end of the weed control sheet S, and fixed to the first concrete section 91 with plug bolts 92. In this way, the weed control sheet S is fixed to the laying surface 90.

[0055] In this embodiment, the flat plate 20 is placed on the laying surface 90, and then positioned between the receiving frame 31 and the retaining plate 32. However, the embodiment is not limited to this, and the flat plate 20 may be positioned between the receiving frame 31 and the retaining plate 32 before being placed on the laying surface 90.

[0056] Furthermore, in this embodiment, through holes h7 are formed in the weed control sheet S by temporarily fixing the first bolt 34A and the second bolt 34B, but this is not the only way to proceed. If a weed control sheet S with through holes h7 already formed is used, or if a step is added to form through holes h7 in the weed control sheet S using a drilling device (not shown, for example, a drill or awl), the step of temporarily fixing the first bolt 34A and the second bolt 34B may be omitted.

[0057] Furthermore, in this embodiment, the first end S1 and second end S2 of the weed control sheet S are heat-welded to the first concrete section 91 provided at the end of the weed control sheet S and fixed to the first concrete section 91 with plug bolts 92. However, the embodiment is not limited to this, and the weed control sheet S may also be fixed to the laying surface 90 by the weed control sheet fixing device 10 alone by arranging the weed control sheet fixing device 10 at the first end S1 and second end S2 of the weed control sheet S.

[0058] Next, we will explain how to secure the weed control sheet S when it is laid on a sloped surface 90A.

[0059] When laying the weed control sheet S on an inclined laying surface 90A, multiple flat plates 20 are placed at equal intervals (for example, 2 plates) along the inclined laying surface 90A from top to bottom on both the laying surface 90A where the third end S3 (right end in Figure 5(a)) of the weed control sheet S is laid and the laying surface 90A where the fourth end S4 (left end in Figure 5(a)) of the weed control sheet S is laid (an example of the "step of placing heavy objects on the laying surface"). In addition, multiple flat plates 20 are placed at equal intervals (for example, 3 plates) along the third concrete section 94 provided on the lower side of the inclined laying surface 90A on the laying surface 90A where the second end S2 (lower end in Figure 5(a)) of the weed control sheet S is laid (an example of the "step of placing heavy objects on the laying surface").

[0060] Once the flat plate 20 is placed on the inclined laying surface 90A, the weed control sheet S is fixed to the flat plate 20 by performing the same steps as when laying the weed control sheet S on a flat laying surface 90. The following steps are the same as when laying the weed control sheet S on a flat laying surface 90, so the explanation is omitted.

[0061] Once the weed control sheet S is fixed to all the flat plates 20 placed on the laying surface 90A, as shown in Figure 5, the first end S1 of the weed control sheet S (the upper end in Figure 5(a)) may be heat-welded to a second concrete section 93 (for example, a drainage ditch) provided on the upper side of the inclined laying surface 90A, and fixed to the second concrete section 93 with plug bolts 92. Alternatively, the second end S2 of the weed control sheet S (the lower end in Figure 5(a)) may be heat-welded to a third concrete section 94 provided on the lower side of the inclined laying surface 90A. In this way, the weed control sheet S is fixed to the laying surface 90A.

[0062] In this embodiment, the first end S1 and second end S2 of the weed control sheet S are heat-welded to the second concrete section 93 and third concrete section 94 provided at the end of the weed control sheet S, and fixed to the second concrete section 93 with plug bolts 92. However, the embodiment is not limited to this, and the weed control sheet S may also be fixed to the laying surface 90A using only the weed control sheet fixing device 10 by placing the weed control sheet fixing device 10 at the first end S1 and second end S2 of the weed control sheet S.

[0063] As described above, in the weed control sheet fixing device 30, weed control sheet fixing device 10, and method for fixing the weed control sheet S according to the embodiment of the present invention, the flat plate 20 is placed between the receiving frame 31 and the pressing plate 32, and the weed control sheet S is sandwiched between the pressing plate 32 and the first washer 33A and the second washer 33B, and the receiving frame 31 and the first washer 33A and the second washer 33B are fixed with the first bolt 34A and the second bolt 34B. Therefore, the weed control sheet S can be fixed to the laying surface 90 or the laying surface 90A without piercing the fixing pins for the weed control sheet S into the laying surface 90 or the laying surface 90A.

[0064] Furthermore, since the process of fixing the receiving frame 31 and the retaining plate 32 to the flat plate 20 and the process of sandwiching and holding the weed control sheet S between the retaining plate 32 and the first washer 33A and the second washer 33B can be performed simultaneously, the weed control sheet S can be easily fixed to the flat plate 20 in fewer steps. In addition, by using a concrete flat plate 20 as the weight, the weight can be easily obtained, improving the workability of fixing the weed control sheet S to the laying surface 90 and the laying surface 90A. [Industrial applicability]

[0065] As described above, the weed control sheet fixing device, weed control sheet fixing apparatus, and weed control sheet fixing method according to the present invention have the effect of fixing the weed control sheet to the laying surface without having to drive fixing pins into the ground, and are useful as weed control sheet fixing devices, etc. [Explanation of Symbols]

[0066] 10. Weed control sheet fixing device 20 Flat plate (heavy body) 30 Weed control sheet fasteners 31 Receiving frame (first mounting member) 32. Retaining plate (second mounting member) 33A First washer (sheet clamping member, first sheet clamping member) 33B Second washer (sheet clamping member, second sheet clamping member) 34A First bolt (fixing member, first fixing member) 34B Second bolt (fixing member, second fixing member) 35A First nut (fixing member, first fixing member) 35B Second nut (fixing member, second fixing member) 90, 90A Weed control sheet laying surface S, Sa weed control sheet

Claims

1. A weed control sheet for securing the weed control sheet to a weight placed on the surface where the weed control sheet is laid. A fastening device, The first and second mounting members, in which the aforementioned weight is positioned, A sheet clamping member is positioned to sandwich the weed control sheet between itself and the second mounting member, The weight is placed between the first mounting member and the second mounting member, and the weed control sheet is sandwiched between the second mounting member and the sheet clamping member, with a fixing member that fixes the first mounting member and the sheet clamping member. Weed control sheet fasteners are included.

2. The weed control sheet fastener according to claim 1, wherein the fastening member has a bolt.

3. The first mounting member is, A flat plate-shaped contact portion that can contact the aforementioned heavy object, A first upright portion that rises from the first end of the contact portion, The first extension portion is bent at the tip of the first upright portion and extends to the opposite side from the contact portion, A second upright portion that rises from the second end of the aforementioned contact portion, The tip of the second upright portion is bent and extends to the opposite side from the contact portion, It has, The second mounting member is a flat plate-shaped member having first and second ends that can be fixed to the first and second extensions, respectively. The sheet clamping member has first and second sheet clamping members that are arranged to sandwich the weed control sheet between the first and second ends of the second mounting member, respectively. The aforementioned fixing member is With the weed control sheet sandwiched between the first end of the second mounting member and the first sheet clamping member, a first fixing member is used to fix the first extension and the first sheet clamping member. With the weed control sheet sandwiched between the second end of the second mounting member and the second sheet clamping member, a second fixing member is used to fix the second extension and the second sheet clamping member. A weed control sheet fixing device according to claim 1, having the following features.

4. A heavy object placed on the surface where the weed control sheet is laid, A weed control sheet fixing device according to any one of claims 1 to 3 for fixing the weed control sheet to the aforementioned weight, A weed control sheet fixing device.

5. The weed control sheet fixing device according to claim 4, wherein the weight is a flat plate-shaped weight.

6. A method for fixing a weed control sheet to a weight placed on the surface on which the weed control sheet is laid, using a weed control sheet fixing device according to any one of claims 1 to 3, The steps include placing the aforementioned heavy object on the surface to be laid, The steps include: placing the weight between the first mounting member and the second mounting member; The steps include placing the weed control sheet on the second mounting member, The steps include: positioning the sheet clamping member so as to sandwich the weed control sheet between the second mounting member and the sheet clamping member; The process involves placing the weight between the first mounting member and the second mounting member, and with the weed control sheet sandwiched between the second mounting member and the sheet clamping member, and then fixing the first mounting member and the sheet clamping member with the fixing member. A method for securing weed control sheets, including [specific components / features].

7. The aforementioned fixing member has a bolt, Before arranging the weed control sheet, the bolts are temporarily fixed to the first and second mounting members so that they protrude from the second mounting member. After positioning the weed control sheet, the bolts are used to strike the weed control sheet toward the second mounting member, thereby forming through holes in the weed control sheet. The steps include removing the bolts that are temporarily fixed, It further includes, In the step of fixing the first mounting member and the first sheet clamping member, the first mounting member and the first sheet clamping member are fixed by the bolt passed through the through hole. The method for fixing a weed control sheet according to claim 6.

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