Compaction roller

Abstract

To provide a compaction roller which is easy to adjust in weight and move. [Solution] A compaction roller 1 for ground leveling comprises a roller body 2 made of a cylindrical body and supported by a rotating shaft, a connecting section 3 to which a shaft section 31 supporting the roller body is connected, a frame 4 provided above the roller body, a weight section 5 placed within the frame so as to be freely weight adjustable, and a towing section 6 which is towed by a vehicle 10 or the like. The weight section may be a portable container, and the weight may be adjusted by the amount of liquid stored in the container and / or the number of containers.

Description

[Technical field]

[0001] The present invention relates to a rolling roller for leveling ground used for ground maintenance, compacting lawns, etc. [Background technology]

[0002] Conventionally, an example of a tool for maintaining grounds such as athletic fields and baseball fields is the following Patent Document 1. Patent Document 1 describes that after plowing and stirring the ground, the unevenness is adjusted and the ground is compacted with a compaction roller that allows the weight of the roller body to be adjusted according to the amount of water stored in the roller body. Patent Document 2 also discloses a compaction roller used in ground maintenance, and describes that the load on the roller body can be adjusted by a fluid. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent No. 6579598 [Patent Document 2] Unexamined Utility Model Publication No. 59-89104 Summary of the Invention [Problem to be solved by the invention]

[0004] By the way, in order to keep a ground or the like in good condition, it is often necessary to hire a professional to do the work, but in order to maintain that condition, it is important to not only hire a professional but also to take care of it daily. Therefore, most facilities with grounds are equipped with rakes for plowing and rollers for leveling the ground. However, the rollers weigh about 100kg to 200kg, and some heavy ones weigh about 300kg to 500kg, in order to compact the ground. For example, if the rollers are placed at the edge of the ground, it is difficult to move them to the place where the ground is to be leveled. Therefore, even if the rakes are used for maintenance, the rollers are not fully utilized. The rollers disclosed in the above Patent Documents 1 and 2 can adjust their weight with water, but it is difficult to supply water at the place where the ground is to be leveled, and no consideration was given to moving the rollers to the place where the ground is to be leveled.

[0005] The present invention has been made in consideration of the above-mentioned circumstances, and has an object to provide a compaction roller that is easy to adjust in weight and move. [Means for solving the problem]

[0006] In order to achieve the above object, the present invention provides a rolling roller for leveling ground, the rolling roller comprising a cylindrical body. On the shaft rotate Freely A roller body supported by a journal; Supporting the shaft portion The connecting part is connected to the roller body. detachably attached to the connecting portion and a weight portion that is placed in the frame so as to be freely weight adjustable. The connecting portion has a support frame provided on each of both axial sides of the roller body, and a fitting portion that is provided protruding from the upper side of the support frame and fits into a fitted portion provided on the frame body, and the fitted portion is provided protruding toward the fitting portion and is fitted inside or outside the fitting portion by covering it from above. It is characterized by: Effect of the Invention

[0007] The compaction roller according to the present invention allows easy weight adjustment and movement. [Brief description of the drawings]

[0008] [Figure 1]1A and 1B are perspective views showing the roller according to the present embodiment, where (a) shows a state in which no weight is placed inside the frame, and (b) shows a state in which a weight is placed inside the frame. FIG. 1B is a schematic side view of the internal ground maintenance tool being towed by a vehicle, where (a) is a schematic side view, and (b) is a schematic plan view. [Diagram 2] 1A is a perspective view showing the roller with a frame removed, and FIG. 1B is a perspective view showing a side portion of a roller body of the roller. [Diagram 3] 1A and 1B are diagrams showing a schematic side view and a schematic plan view of the roller being pulled by a vehicle. [Figure 4] 1 is a flowchart showing an example of a ground preparation method performed using a rolling roller. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In some drawings, some of the detailed reference numerals used in other drawings are omitted.

[0010] The compaction roller 1 according to this embodiment is used for ground preparation such as schoolyards and ball fields to compact the ground. The compaction roller 1 comprises a cylindrical roller body 2 supported by a rotating shaft, a connecting part 3 supporting the roller body 2, a frame 4 provided above the roller body 2, and a weight part 5 placed within the frame 4 so that the weight can be adjusted freely. Details are given below.

[0011] The rolling roller 1 may be used by being pushed by human power (manually) in the direction of travel D1 as shown in FIG. 1(a), or by being pulled in the direction of travel D2 as shown in FIG. 1(a) and FIG. 3(a). When used by pushing, the gripping part 60 of the handle part 6 is grasped and pressure is applied toward the roller body 2, which rotates in the direction of travel D1, and rolling can be performed while being pushed. When used by pulling, the person pulling enters the space 8 provided between the handle part 6 and the roller body 2, grasps the gripping part 60, and pulls the roller body 2, which rotates in the direction of travel D2, and rolling can be performed while being pulled. The handle part 6 is made of a highly rigid metal such as iron or stainless steel, and may be formed by bending a pipe-shaped hollow tube or by metal joining. The base side (the connecting part 3 side) of the handle part 6 may be fixedly attached to the connecting part 3, or may be rotatably attached. When towing using a vehicle, the vehicle to be used may be a large truck, a normal car, or a light passenger car, and is not particularly limited as long as it can be towed at a speed of 5 to 15 km / h. In this embodiment, Figs. 1 and 2 show a type of rolling roller 1 that is pushed by human power, and Fig. 3 shows an example of towing the rolling roller using a light truck as the vehicle 10. As shown in Fig. 3(a), a light truck is preferable because it can load a plastic container 50 on the loading platform, has a small turning radius, and can be expected to have a certain amount of horsepower. In this case, the apex of the handle part 6 that is triangular in plan view is the connection part 61, and a towing hook 7 for connecting the vehicle 10 and the rolling roller 1 is provided there. The configuration of the towing hook 7 may be any configuration as long as it can firmly connect the vehicle 10 and the rolling roller 1.

[0012] The roller body 2 is made of a highly rigid metal such as iron or stainless steel, and includes a cylindrical portion 20 made of a hollow cylinder, and side portions 21 provided to cover both longitudinal side surfaces of the cylindrical portion 20. The side portions 21 are circular, with a through hole formed in the center, and a shaft portion 31 (described later) is stretched between the through holes in the longitudinal direction, and the roller body 2 is rotatably supported by the shaft portion 31. The weight of the cylinder 20 can be adjusted by the amount of liquid stored in the cylinder 20. The rotation mechanism of the roller body 2 is not particularly limited as long as it can rotate smoothly to move forward or backward when a pushing or pulling force is applied. As shown in FIG. 2(b), the side portion 21 is provided with an opening 21a for feeding liquid such as water into and out of the cylindrical portion 20 so as to adjust the weight of the roller body 2, an air vent port 21b for venting air when storing liquid in the cylindrical portion 20, and a hole portion (not shown) through which the shaft portion 31 penetrates. The opening 21a and the air vent port 21b are sealed with a cap that can be opened and closed, and the configuration is not particularly limited. The weight of the roller body 2 can be adjusted by the amount of liquid such as water or soil such as sand stored in the roller body 2. For example, if the roller body 2 is made of iron and has a diameter of 500 mm and a length in the longitudinal direction of 1300 mm, the weight is about 180 kg when empty and 320 kg to 350 kg when full. For example, if the roller body 2 is made of iron and has a diameter of 250 mm and a length in the longitudinal direction of 1300 mm, the weight is about 75 kg when empty and 170 kg to 200 kg when full. If the roller body 2 is filled to capacity in this way, it will become heavy as described above and will be difficult to move, so if the amount stored in the roller body 2 is empty or only about half full, an adult can easily move the roller body 2 to the area to be leveled by holding the handle portion 6 and rolling it.

[0013] The connecting part 3 is made of a highly rigid metal such as iron or stainless steel, and includes a support frame 30 that supports the handle part 6 and the shaft part 31, and the shaft part 31 that axially supports the roller body 2. In the illustrated example, the support frame 30 is configured as a hollow rectangular column, but it may be cylindrical. As shown in FIG. 2(a) and other figures, the connecting part 3 is provided in pairs on both sides of the roller body 2, and the upper side of the support frame 30 is provided with a plurality of cylindrical bodies 30a (fitting parts) that open upward. The diameter of this cylindrical body 30a is set to a size that allows the leg portions 40a (fitted portions) of the frame body 4 described below to be fitted thereto (the legs 40a are fitted inside), thereby allowing the frame body 4 to be provided above the roller body 2. In the illustrated example, the diameter of the cylindrical body 30a is larger than the diameter of the legs 40a as shown in FIG. 2(b), so that the legs 40a are inserted into the cylindrical body 30a and fitted thereto, but this is not limited to this, and the diameter of the legs 40a may be formed larger than the diameter of the cylindrical body 30a, and the legs 40a may be fitted over the cylindrical body 30a (the legs 40a are fitted outside). In this case, the cylindrical body 30a does not need to be open upward.

[0014] The frame 4 is provided above the roller body 2. The frame 4 is made of metal such as iron or stainless steel, or resin, and the material is not particularly limited, but it is preferable that the material is durable enough for long-term use and for placing the weights 5 on it. The total weight of the frame 4 is preferably about 15 kg to 20 kg, and considering weight, rigidity, and durability, iron is preferably used. The shape and configuration of the frame 4 are not particularly limited, but the frame shown in the figure is configured to be rectangular in a plan view according to the longitudinal size of the roller body 2. The frame 4 includes a base portion 40 that is approximately L-shaped in a cross-sectional view on which the weights 5 are placed, a plurality of vertical bars 41 that are appropriately spaced apart in the vertical direction and prevent the weights 5 from falling, horizontal bars 42 that are arranged in the horizontal direction so that the weights 5 can be placed one by one, and legs 40a that protrude from the base portion 40 toward the cylindrical body 30a. The base 40 has a bottom 40b arranged only around the four sides, and the central part is an open space 40c, so that it can be made lighter and easier to carry. By providing the frame 4 above the roller body 2 as shown in the figure, the weight of the frame 4 can be included in the weight of the roller 1. The frame 4 may be fixed to the connecting part 3 and integral with the roller body 2, but if the frame 4 is configured to be detachable from the connecting part 3 as shown in FIG. 2(a), the components of the roller 1 can be carried separately, making it easier to move. For example, if the total weight of the frame 4 is 15kg to 20kg, one or two people can carry only the frame 4 separately from the roller body 2. Therefore, even if the amount of liquid stored in the roller body 2 is reduced to make it easy to carry, the weight of the roller 1 can be secured.

[0015] The weight section 5 is not particularly limited as long as it is placed in the frame 4 so that the weight can be adjusted freely. For example, a container with a handle that can be easily carried is preferable. In this case, the weight can be adjusted by the amount of liquid stored in the container and / or the number of containers. In the illustrated example, a resin container, a plastic container 50, is used as the weight section 5. The size of the plastic container 50 is not particularly limited, but a plastic container 50 of 18 to 20 liters is preferable because it is easy to carry and handle. When using a plastic container 50 of 20 liters as the weight section 5, for example, if the plastic container 50 is filled with water, it becomes a 20 kg weight, and if it is filled with half the water, it becomes a 10 kg weight. Also, if three full plastic containers 50 are stacked, a weight of 60 kg (20 kg x 3) can be obtained, and the weight can be adjusted freely. The weight can also be adjusted by the number of plastic containers 50 stored in the frame 4. If water is stored in the plastic container 50 and used as a weight, the water can be supplied on-site where the grounds are prepared, and it is convenient to store it when needed, and when it has finished serving as a weight, it can be used as water (see S103 in FIG. 4) after the grounds have been prepared. Furthermore, the weight adjustment of the plastic container 50 is not limited to water (liquid), and soil and sand may also be used. Soil and sand can also be supplied on-site where the grounds are prepared. Furthermore, commercially available plastic containers 50 can be used as the weighting section 5.

[0016] An example of a ground preparation method using the above-mentioned compaction roller 1, rake (not shown), and register (not shown) will be described with reference to the flow chart of FIG. First, the condition of the ground to be prepared is confirmed, and a rake is used to plow it (S100). For example, in the case of a baseball ground, the rake is used to loosen any clumps of soil, and to rake up the soil by going around the area to be prepared. Once the soil on the ground is loosened and blended, a rake is used to even out the unevenness (S101) to make the ground flat. The rake goes around the plowed area evenly, until it becomes a smooth surface without any bumps. Once the area to be prepared has been flattened by the rake, a compaction process (S102) is performed using a compaction roller 1. Once the ground has been compacted to the desired hardness, the water application process (S103) is performed.

[0017] When the rolling step (S102) is performed using the rolling roller 1, it is necessary to carry the rolling roller 1 to the maintenance area. At this time, if the iron roller body 2, which is 250 mm in diameter and 1300 mm in length in the longitudinal direction, is carried empty, it weighs about 75 kg, so it can be easily carried by rolling the roller body 2 by holding the handle 6. If the frame 4 is configured to be detachable from the connecting part 3, the frame 4 can be carried separately from the roller body 2. Furthermore, the plastic containers 50, which allow the weight to be adjusted, can also be carried separately. Therefore, for example, if multiple people share the roles and carry the components that make up the rolling roller 1 (roller body 2, frame 4, weight part 5) to the maintenance area, it can be moved safely and without burden. Also, the frame 4 can be attached very easily because it is only necessary to fit the legs 40a and the cylinder 30a so as to cover the roller body 2 from above. And, since the combined weight of the roller body 2, frame 4, and weight portion 5 constitutes the weight of the compaction roller 1, the compaction roller 1 can be made to be 250 kg to 450 kg, which is sufficiently heavy for a compaction roller. In this case, it goes without saying that if weight adjustment of the weight portion 5 is not necessary and the ground environment is such that the weight of the roller body 2 and frame 4 is sufficient for compaction, then it is not necessary to place the plastic container 50 on the weight portion 5.

[0018] The above-mentioned ground maintenance method is an example, and is not limited thereto. For example, depending on the condition of the ground, the unevenness adjustment step (S101) and the water addition step (S103) may be omitted. For example, in the case of a baseball ground, the total weight of the compaction roller 1 needs to be 100 kg or more, but 200 kg is sufficient, and to make the ground with moderate elasticity, compaction of 300 kg or more is not necessary. The ideal condition of a ground is said to be one with moderate elasticity and moderate water retention, but since the surface layer of the ground (such as sand) is exposed to rain and wind 365 days a year, the surface layer to the silt layer hardens when dry and becomes sticky when wet, and the phenomenon of separation into sand, soil, etc. occurs, and changes every day. Therefore, if daily ground maintenance is neglected, it may become so hard that it cannot be plowed with a rake. Also, if the compaction during ground maintenance is too hard, the water retention capacity decreases, puddles are likely to form, and only the surface of the ground hardens, leading to the generation of dust and sand. In recent years, to avoid dust and sand, it has become common to spread bittern on the ground, avoid drawing lines using slaked lime, and fasten tape with nails. However, when bittern is spread on the ground or tape is fastened to the ground with nails, the soil does not move, making it difficult to maintain ideal elasticity and water retention, and many nails for fastening the tape remain in the ground, which is very dangerous, which is a problem. With the rolling roller 1 according to this embodiment, the components are lighter, making it easier to carry and the rolling roller 1 can be easily moved, which leads to the use of the rolling roller 1. In addition, the environment of the ground varies depending on the frequency of use, purpose, degree of maintenance, and environment, and there are also preferences of the manager and user. With the rolling roller 1 according to this embodiment, the weight of the rolling roller 1 can be easily adjusted with the weight part 5, so it is easy to adjust the desired degree of compaction. In addition, for example, the rolling of tennis courts (regardless of clay or grass) and grass may require less than 100 kg. Even when used for such purposes, the compaction roller 1 of this embodiment can easily adjust its weight to less than 100 kg by emptying the roller body 2 and attaching the frame body 4, or by storing a small amount of liquid in the roller body 2 and removing the frame body 4.

[0019] The configuration and shape of the rolling roller 1 are not limited to the above embodiment. For example, the weight portion 5 is not limited to the illustrated example as long as the weight can be freely adjusted. The dimensions of the roller body 2 and the frame 4 in the longitudinal direction, transverse direction, etc. are not particularly limited, but may be formed to match the size of the plastic container (polyethylene tank 50) to be stacked as the weight portion 5. The roller body 2 has been described as having an opening 21a or the like on the side portion 21 on the premise of adjusting the amount of storage in the roller body 2, but is not limited to this, and may be used in an empty state or may have the stored material sealed in advance, or may not have the opening 21a and the weight adjustment may be performed by the weight portion 5. The weights of the roller body 2, the frame 4, and the weight portion 5 described above are merely examples, and the size may be made smaller or larger. [Explanation of symbols]

[0020] 10 Vehicles 1. Roller 2 Roller body 3 Connecting part 4 Frame 5 Weight section 6 Handle

Claims

1. A rolling roller for leveling ground, The roller includes a cylindrical roller body rotatably supported on a shaft portion, a connecting portion supporting the shaft portion, a frame provided above the roller body and detachably attached to the connecting portion, and a weight portion placed within the frame so as to be weight-adjustable, the connecting portion has a support frame provided on each of both axial sides of the roller body, and a fitting portion that protrudes from an upper side of the support frame and fits into a fitted portion provided on the frame body, A pressure roller, characterized in that the fitted portion is provided so as to protrude toward the fitting portion and is fitted inside or outside the fitting portion by covering it from above.

2. In claim 1, The frame body is a pressure roller characterized in that it comprises a base portion having a bottom portion arranged only around the four periphery and an open space in the center, and vertical bars arranged at appropriate intervals in the vertical direction.

3. In claim 1 or 2, A pressure roller, wherein the cylinder is hollow and its weight is adjusted by the amount of liquid stored in the cylinder.

4. In claim 1 or 2, A compaction roller, wherein the weight portion is a portable container, and the weight is adjusted by the amount of liquid stored in the container and / or the number of the containers.

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