Ground reforming method

Abstract

To provide a ground reforming method that can improve deteriorated conditions.SOLUTION: A reforming method for the ground 10 according to the present invention includes: a gradient correction process for correcting the gradient of the ground with a bulldozer 20 that receives laser light from a rotary laser device 40 that is placed on the ground and emits laser light and receives GPS and moves around; a soil replenishment process for replenishing new soil 12; a leveling process for spreading the replenished soil using the bulldozer with the laser light and GPS; a tilling process for tilling the surface of the ground by a tractor 30 equipped with a tailor attachment 60; an unevenness leveling process for leveling unevenness of the ground by towing by the tractor a planer cutter 70 with a framework assembled with steel materials 72; and a final finishing process for performing final finishing on the ground.SELECTED DRAWING: Figure 7

Description

Technical Field

[0001] The present invention relates to a reform method for the soil surface of baseball grounds, tennis courts, parks, etc.

Background Art

[0002] In grounds such as baseball grounds, soccer grounds, tennis courts, softball grounds, and parks, due to aging changes such as use and rainfall, the condition of the ground deteriorates. Specifically, problems with drainage occur, such as the deterioration of the water gradient of the ground, the generation of water puddles and muddiness after rainfall, and the deterioration of the condition, such as hardening due to bitter juice and lime, overgrowth of weeds, and the formation of surface irregularities.

[0003] The inventor has proposed in Patent Document 1 a ground surface drainage method in which lattice-shaped grooves are formed on the surface layer of the ground and crushed stones or the like are filled in the grooves to improve the drainage efficiency.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Disclosure of the Invention

Problems to be Solved by the Invention

[0005] There is a need for a method for comprehensively reforming not only the drainage of the ground but also various conditions of the ground surface described above.

[0006] An object of the present invention is to provide a ground reform method capable of improving deteriorated conditions.

Means for Solving the Problems

[0007] The ground reform method according to the present invention is A ground reform method, A gradient correction step of correcting the gradient of the ground by a bulldozer that receives the laser light from a rotary laser device disposed on the ground and emitting the laser light and travels while receiving GPS; A primary rolling step of rolling the ground by a roller compactor; A soil replenishment step of replenishing new soil; A leveling step of leveling the replenished soil using the laser light and the GP by the bulldozer; A secondary rolling step of rolling the ground by the roller compactor; A cultivating step of cultivating the surface layer of the ground by a tractor equipped with a Taylor attachment; A tertiary rolling step of rolling the ground by the roller compactor; An unevenness rectification step of rectifying the unevenness of the ground by towing a kannakutter in which steel materials are assembled into a frame shape with a tractor; A quaternary rolling step of rolling the ground by the roller compactor; A final finishing step of finally finishing the ground by a tractor equipped with a finishing jig having a brush attached to the rear of a rake; having.

[0008] The kannakutter can be formed by projecting a flat blade member downward from the lower edge of the steel material assembled into a frame shape.

[0009] The kannakutter can be towed with a weight placed on the rear side.

[0010] It is desirable that the bulldozer travels on rubber crawlers.

[0011] The cultivating step can cultivate the surface layer of 1 cm to 8 cm of the ground.

Effect of the Invention

[0012] According to the ground reform method of the present invention, it is possible to revive the ground with deteriorated conditions.

Brief Explanation of Drawings

[0013]

Figure 1

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Modes for Carrying Out the Invention

[0014] Hereinafter, the ground reform method of the present invention for the ground 10 will be described with reference to the drawings.

[0015] Figure 1 is a photograph of the ground 10 before reform. The ground 10 before reform has unevenness on the surface, and due to aging deterioration caused by use and rainfall, problems such as drainage problems such as deterioration of the water gradient, generation of water puddles and muddiness after rainfall, and hardening by bitter juice and lime, and overgrowth of weeds, etc., the conditions are deteriorating.

[0016] As described above, the reform method for the ground 10 with deteriorated conditions can be composed of a gradient correction step, a primary rolling step, a soil replenishment step, a leveling step, a secondary rolling step, a tillage and transportation step, a tertiary rolling step, an unevenness correction step, a quaternary rolling step, and a final finishing step. Each step will be described in detail below.

[0017] <Gradient correction step> The gradient correction step is a step of correcting the gradient of the ground 10 prior to the reform of the ground 10. The gradient correction step can be performed using the bulldozer 20.

[0018] In order to accurately correct the gradient, prior to the gradient correction step, the survey data of the ground 10 is measured in advance.

[0019] Also, by introducing i construction, more accurate gradient correction can be performed. Specifically, it is desirable to use a bulldozer 20 that operates using laser light and / or GPS (Global Positioning System). The bulldozer 20 has a function of receiving laser light and / or a function of receiving GPS from the satellite 41. One or more rotating laser devices 40 are arranged at one or more locations on the ground 10, and the bulldozer 20 receives the laser light and / or GPS and travels to correct the gradient of the ground 10.

[0020] It is preferable to adopt a rubber crawler 21 for the bulldozer 20. Thereby, the contact pressure on the ground 10 can be reduced, and the gradient correction can be suitably performed.

[0021] <Primary rolling step> After the gradient correction step, as shown in Fig. 3(a), the first compaction (primary compaction) is performed on the ground 10. The compaction can be carried out by a roller compactor 50. The roller compactor 50 can employ one equipped with a wide roller tire 51 having a wide width and a flat peripheral surface. In this case, as shown in Fig. 3(b), it is desirable to use a wide roller tire 51 with a right-angled corner on the ground contact surface. This can prevent the soil from bulging during compaction.

[0022] By performing the primary compaction, the gradient-corrected ground 10 becomes almost flat.

[0023] <Soil replenishment step> After the primary compaction step, as shown in Fig. 4, new soil 12 is replenished to the ground 10. Examples of the soil 12 include, but are not limited to, black soil mixed soil. The soil 12 can be carried in by a dump truck or the like and can be piled up at the appropriate places where the soil is insufficient. In the present invention, by making full use of icon construction and performing accurate surveying using laser light and GPS, the characteristic is that less soil 12 needs to be replenished.

[0024] Note that after the primary compaction and before the soil replenishment, it is desirable to perform light wave surveying of the ground 10 using a drone or the like to measure the unevenness of the ground 10. This makes it possible to know which parts of the ground 10 lack soil and which parts have sufficient soil, so that the soil can be replenished at the appropriate places.

[0025] <Leveling step> After the soil replenishment step, as shown in Fig. 5, the replenished soil 12 is leveled by a bulldozer 20. It is desirable to employ a bulldozer 20 that operates by receiving the laser light and GPS used in the gradient correction step. This makes it possible to accurately perform the leveling operation of the soil 12.

[0026] <Secondary compaction step> After the leveling process, as shown in Fig. 3, rolling is performed again on the ground 10. The rolling can be carried out in the same manner as in the primary rolling process using a roller rolling machine 50.

[0027] <Cultivation and transportation process> After the secondary rolling process, prior to the unevenness correction process described below, the ground 10 is cultivated and transported to stir and mix the surface layer. The cultivation and transportation can be carried out by a tractor 30 equipped with a Taylor attachment 60 as shown in Fig. 6(a). As partially shown in Fig. 6(b), the Taylor attachment 60 can employ one in which a plurality of cultivation tines 61 are mounted on a rotating shaft 62. The illustrated cultivation tines 61 are so-called nata tines.

[0028] By the tractor 30 equipped with the Taylor attachment 60, the ground 10 can be stirred, mixed, and softened with a surface layer having a thickness of preferably 1 cm to 8 cm, desirably 3 cm to 5 cm.

[0029] <Tertiary rolling process> After the cultivation and transportation process, rolling is performed again on the surface layer of the cultivated ground 10. The rolling can be carried out in the same manner as in the primary rolling process using a roller rolling machine 50 (see Fig. 3).

[0030] <Unevenness correction process> After the tertiary rolling process, unevenness correction of the ground 10 is performed. By the unevenness correction, the unevenness and height differences on the surface of the ground 10 are corrected. The unevenness correction can be carried out by towing a kannakutter 70 in which a steel material 72 is assembled into a rectangular frame shape with a tractor 30 as shown in Fig. 7(a). As shown in Fig. 7(b), the kannakutter 70 can be equipped with U-shaped angles 77 on the left and right of one side of a rectangular frame 71, and a wire 78 can be hung on the angles 77 and towed by a tractor 30. Note that a wire can be hung on the corners of the rectangle. In order to prevent the kannakutter 70 from floating, it is desirable to place a weight 79 on the rear side.

[0031] Figure 7(c) is a cross-sectional view of the ripper cutter 70. The ripper cutter 70 can be configured by arranging, for example, an equilateral triangular (L-shaped) steel material 72 in an inverted L shape, assembling it into a rectangular frame shape so that the vertical member is on the outer peripheral side, and bolting a flat blade member 73 to the outer peripheral side of the vertical portion of the steel material 72. By adopting a high-tensile steel (high-tension steel) for the blade member 73, wear can be reduced. Also, by bolting the blade member 73, it is easy to replace the blade member 73 when it wears. It is preferable to perform build-up welding 75 on the bent portion to reinforce it so that the L-shaped steel material 72 does not open. Also, it is desirable to attach a reinforcing plate 76 or the like to the corner where the steel materials 72 intersect.

[0032] By towing the ripper cutter 70 with the above configuration using the tractor 30, the unevenness and height differences on the surface of the ground 10 can be corrected, and the soil in the high part can be moved to the low part and leveled. In the case of the ripper cutter 70 in Figure 7(c), the blade member 73 on the front side of the rectangular frame shape can cut the soil, and the blade member 73 on the rear side can level it, and unevenness correction can be preferably performed.

[0033] <Fourth rolling process> After the unevenness correction process, rolling is performed again on the surface layer of the ground 10 that has been corrected for unevenness. The rolling can be performed in the same manner as in the primary rolling process using a roller compactor 50 (see Figure 3).

[0034] <Final finishing process> Finally, as shown in Figure 8(a), the ground 10 is finally finished using the tractor 30 with the finishing jig 80 attached. The finishing jig 80 can be configured to include, as shown in Figure 8(b), a wire rake 81 in which a plurality of wires 82 are arranged in the width direction downward, a flat rake 83 in which a plurality of tooth members 85 are formed in a waveform on the lower surface of a flat plate 84 extending in the width direction, and a brush 86 in which a resin hair material 87 is implanted below a base 88 extending in the width direction. Note that the rake is not limited to the combination of the wire rake 81 and the flat rake 83, and either one of them may be used.

[0035] The finishing jig 80 has a wire-shaped rake 81 at the front, a flat plate rake 83 behind it, and a brush 86 at the very rear. The tractor 30 pulls the wire 82, the toothed member 85, and the brush material 87 so that they are grounded on the ground 10. As a result, the rolled ground 10 is gently loosened by the wire 82, the final height adjustment is performed by the toothed member 85, and the fine irregularities are leveled by the brush material 87 of the brush 86, enabling a flat final finish.

[0036] Figure 9 is a photograph of the ground 10 after the final finishing process. As shown in the figure, the deteriorated condition of the ground 10 is improved, and it can be restored to a beautiful ground 10 that is almost unrecognizable.

[0037] The description of the above embodiment is for explaining the present invention and should not be construed as limiting the invention described in the claims or reducing the scope. Also, each component of the present invention is not limited to the above embodiment, and it goes without saying that various modifications are possible within the technical scope described in the claims.

[0038] It should be understood that the devices used in each process are examples. Also, the dimensions and shapes are examples and do not limit the present invention. Further, although the ground 10 is exemplified by a baseball ground, it may be a soccer ground, a tennis court, a softball ground, etc.

[0039] In the case of a tennis court, it is a soil replenishment process (for example, replenishing with fine sand), a tillage and transportation process, a gradient correction process, a rolling process, an unevenness correction process, a rolling process, and a final finishing process. Finally, a line tape may be installed.

Explanation of Reference Numerals

[0040] 10 Ground 20 Bulldozer 30 Tractor 50 Roller Compactor 60 Taylor Attachment 70 Mower 80: Finishing jig

Claims

1. A ground reform method, comprising: a gradient correction step of correcting the gradient of the ground by a bulldozer that receives the laser light from a rotary laser device disposed on the ground and emitting the laser light and travels while receiving GPS; a primary rolling step of rolling the ground by a roller compactor; a soil replenishment step of replenishing new soil; a leveling step of leveling the replenished soil by the bulldozer using the laser light and the GP; a secondary rolling step of rolling the ground by the roller compactor; a cultivating step of cultivating the surface layer of the ground by a tractor equipped with a Taylor attachment; a tertiary rolling step of rolling the ground by the roller compactor; an unevenness correction step of pulling a kann cutter in which steel materials are assembled into a frame shape with a tractor to correct the unevenness of the ground; a quaternary rolling step of rolling the ground by the roller compactor; a final finishing step of finally finishing the ground by a tractor equipped with a finishing jig having a brush attached to the rear of a rake; A ground reform method having the above steps.

2. The kann cutter is formed by protruding a flat blade member downward from the lower edge of the steel material assembled into a frame shape. The ground reform method according to Claim 1.

3. The kann cutter is towed with a weight placed on the rear side. The ground reform method according to Claim 2.

4. The bulldozer travels on rubber crawlers. The ground reform method according to Claim 3.

5. In the cultivating step, the surface layer of the ground 1 cm to 8 cm thick is cultivated. The ground reform method according to Claim 4.

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