Compaction roller

Abstract

To provide a compaction roller that allows easy weight adjustment and movement.SOLUTION: A compaction roller 1 for land levelling is provided, the compaction roller comprising a roller main body 2 formed from a cylindrical body and pivotally supported, a connection part 3 to which a shaft part 31 pivotally supporting the roller main body is connected, a frame body 4 provided above the roller main body, a weight part 5 placed in the frame body in a weight-adjustable manner, and a towed part 6 towed by a vehicle 10. The weight part is formed as a portable container and may adjust the weight with the amount of liquid stored in the container and / or the number of the containers.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a rolling roller for land preparation used for grand maintenance, lawn suppression, and the like.

Background Art

[0002] Conventionally, as an instrument for maintaining grand in stadiums, baseball fields, etc., for example, the following Patent Document 1 can be cited. This Patent Document 1 describes that after plowing and stirring the grand, unevenness adjustment is performed, and rolling is performed with a rolling roller that enables weight adjustment of the roller body by the amount of water stored in the roller body. Also, Patent Document 2 below discloses a rolling roller used for grand maintenance, and it is described that the load of the roller body can be adjusted by a fluid.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0004] By the way, in order to keep the ground and the like in good condition, it is often done by entrusting a professional contractor. However, to maintain that condition, not only entrusting the contractor but also daily maintenance is important. Therefore, most facilities with a ground are equipped with a rake for tilling and a roller for leveling the ground. However, since the roller compresses the ground, it weighs about 100 kg to 200 kg, and in some cases, it weighs about 300 kg to 500 kg. For example, when the roller is placed at the edge of the ground, it is very difficult to move it to the place where leveling is desired. Therefore, although maintenance with a rake is carried out, there is a current situation where the roller is not fully utilized. The rollers disclosed in Patent Document 1 and Patent Document 2 can adjust the weight with water or the like, but it is difficult to supply water at the place where leveling is desired, and the situation when moving the roller to the place where leveling is desired is not considered.

[0005] The present invention has been made in view of the above circumstances, and an object thereof is to provide a roller for leveling that is easy to adjust weight and move.

Means for Solving the Problems

[0006] In order to achieve the above object, the roller for leveling according to the present invention is a roller for compacting the ground, and includes a roller body that is formed of a cylindrical body and is rotatably supported, a connecting portion that pivotally supports the roller body, a frame provided above the roller body, and a weight portion that is placed in the frame so that the weight can be adjusted.

Effects of the Invention

[0007] According to the roller for leveling according to the present invention, it is easy to adjust the weight and move.

Brief Description of the Drawings

[0008]

Figure 1

Figure 2

Figure 3

Figure 4

Mode for Carrying Out the Invention

[0009] Hereinafter, embodiments of the present invention will be described with reference to the drawings. In some of the drawings, some of the detailed reference numerals attached to other drawings are omitted.

[0010] The compaction roller 1 according to this embodiment is used for ground maintenance such as schoolyards and ball fields in order to compact the ground. The compaction roller 1 includes a roller body 2 formed of a cylindrical body and rotatably supported, a connecting portion 3 that pivotally supports the roller body 2, a frame body 4 provided above the roller body 2, and a weight portion 5 that is placed in the frame body 4 so that the weight can be adjusted. Details will be described below.

[0011] As shown in Fig. 1(a), the rolling press roller 1 may be used by manually pushing it in the traveling direction D1, or it may be used by pulling it in the traveling direction D2 as shown in Fig. 1(a) and Fig. 3(a). When using it by pushing, hold the handle part 60 of the handle part 6 and apply pressure toward the roller body 2, then the roller body 2 rotates in the traveling direction D1, and rolling pressure can be applied while pushing. When using it by pulling, a person who pulls enters the space 8 provided between the handle part 6 and the roller body 2 and holds the handle part 60. If the roller body 2 is pulled, the roller body 2 rotates in the traveling direction D2, and rolling pressure can be applied while pulling. 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 may be formed by metal joining. The base side (connection part 3 side) of the handle part 6 may be fixedly attached to the connection part 3 or may be rotatably attached. When using a vehicle for pulling, the vehicle to be used may be a large truck, an ordinary car, or a light passenger car, and there is no particular limitation as long as it is a vehicle that can pull at a speed of 5 to 15 km / h. In this embodiment, Figs. 1 and 2 show a type of rolling press roller 1 that is pushed manually, and Fig. 3 shows an example of pulling the rolling press roller using a light truck as the vehicle 10. As shown in Fig. 3(a), in the case of a light truck, a poly tank 50 can be loaded on the loading platform, it has good maneuverability, and a certain horsepower can be expected, so it is suitable. In this case, in a plan view, the apex of the triangular handle part 6 is used as the connection part 61, and a towing hook 7 for connecting the vehicle 10 and the rolling press roller 1 is provided there. The configuration of the towing hook 7 may be any as long as the vehicle 10 and the rolling press roller 1 can be firmly connected.

[0012] The roller body 2 is made of a highly rigid metal such as iron or stainless steel. The roller body 2 includes a cylindrical portion 20 formed of a hollow cylindrical body, and side portions 21 provided so as to cover both longitudinal side surfaces of the cylindrical portion 20. The side portions 21 are circular in shape, and a through-hole is formed at the center thereof. A shaft portion 31, which will be described later, passes through in the longitudinal direction between the through-holes, and the roller body 2 is rotatably supported by this shaft portion 31. The weight of the cylindrical body 20 can be adjusted by the amount of liquid stored in the cylindrical body 20. The rotation mechanism of the roller body 2 is not particularly limited as long as it can rotate smoothly so as 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 taking in and out a liquid such as water for adjusting the weight of the roller body 2 into and out of the cylindrical portion 20, an air vent 21b for venting air when storing the liquid in the cylindrical portion 20, and a hole portion (not shown) through which the shaft portion 31 passes. The opening 21a and the air vent 21b are sealed with a cap that can be opened and closed, and the configuration thereof is not particularly limited. The weight of the roller body 2 can be adjusted by the storage amount of a liquid such as water or soil such as sand. For example, in the case of an iron roller body 2 with a diameter of 500 mm and a longitudinal length dimension of 1300 mm, the weight is about 180 kg in the empty state and 320 kg to 350 kg when full. Also, for example, in the case of an iron roller body 2 with a diameter of 250 mm and a longitudinal length dimension of 1300 mm, the weight is about 75 kg in the empty state and 170 kg to 200 kg when full. When the roller body 2 is filled to capacity in this way, it becomes the above-mentioned weight and it becomes difficult to move it. Therefore, if the amount stored in the roller body 2 is either in the empty state or about half the amount even when stored, an adult can easily move the roller body 2 to the place where leveling is desired while holding the handle portion 6 and rolling the roller body 2 by himself / herself.

[0013] The connecting part 3 is made of a highly rigid metal such as iron or stainless steel. The connecting part 3 includes a support frame 30 that supports the handle part 6 and the shaft part 31, and a shaft part 31 that pivotally supports the above-described roller body 2. In the illustrated example, the support frame 30 is configured in a hollow prismatic shape, but it may be cylindrical. As shown in Fig. 2(a) etc., a pair of connecting parts 3 are provided on both sides of the roller body 2, and a plurality of cylindrical bodies 30a (fitting parts) that open upward are provided on the upper side of the support frame 30. The diameter of this cylindrical body 30a is set to a size such that the leg part 40a (fitted part) of the frame body 4 described later can be fitted (the leg part 40a is internally fitted), whereby the frame body 4 can be provided above the roller body 2. In the illustrated example, as shown in Fig. 2(b), since the diameter of the cylindrical body 30a is larger than the diameter of the leg part 40a, the leg part 40a is inserted into and fitted to the cylindrical body 30a. However, the present invention is not limited to this, and the diameter of the leg part 40a may be formed larger than the diameter of the cylindrical body 30a, and the leg part 40a may be fitted (the leg part 40a is externally fitted) so as to cover the cylindrical body 30a from above. In this case, the cylindrical body 30a does not have to open upward.

[0014] The frame body 4 is provided above the roller body 2. The frame body 4 is made of metal such as iron or stainless steel, or resin, etc., and its material is not particularly limited, but it is preferably one with durability that can withstand long-term use and the placement of the weight portion 5. The total weight of the frame body 4 is preferably about 15 kg to 20 kg, and considering the weight, rigidity, and durability, an iron-made one is preferably used. The shape and configuration of the frame body 4 are not particularly limited, but in the illustrated example, it is configured in a rectangular shape in plan view according to the size of the roller body 2 in the longitudinal direction. The frame body 4 includes a pedestal portion 40 having a substantially L-shaped cross-section on which the weight portion 5 is placed, a plurality of vertical bars 41 arranged at appropriate intervals in the vertical direction to prevent the weight portion 5 from falling, a horizontal bar 42 arranged in the horizontal direction so that the weight portions 5 can be placed separately one by one, and a leg portion 40a provided to protrude from the pedestal portion 40 toward the cylindrical body 30a. Since the bottom portion 40b of the pedestal portion 40 is arranged only around the perimeter and the central portion is an open space portion 40c, weight reduction can be achieved and it is easy to carry. By providing the frame body 4 above the roller body 2 as shown in the illustrated example, the weight of this frame body 4 can also be included in the weight as the compaction roller 1. Also, the frame body 4 may be fixedly provided to the connecting portion 3 and integrally provided with the roller body 2, but if the frame body 4 is configured to be detachable from the connecting portion 3 as shown in Fig. 2(a), the components of the compaction roller 1 can be carried separately, making it easier to move. For example, if the total weight of the frame body 4 is 15 kg to 20 kg, it is possible for one or two people to carry only the frame body 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 as the compaction roller 1 can be ensured.

[0015] The weight portion 5 is not particularly limited as long as it is placed in the frame body 4 in a weight-adjustable manner. For example, a portable container with a handle is suitable. 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, an example of adopting a resin container, a poly tank 50, as the weight portion 5 is shown. The size of the poly tank 50 is not particularly limited, but a 18 - 20 liter poly tank 50 is suitable because it is easy to carry and handle. When using, for example, a 20 liter poly tank 50 as the weight portion 5, if the poly tank 50 is filled with water, it becomes a 20 kg weight, and if the water is reduced to half, it becomes a 10 kg weight. Also, if three full poly tanks 50 are stacked, it can be made into a 60 kg weight with 20 kg × 3, and the weight can be adjusted freely. Also, the weight can be adjusted by the number of poly tanks 50 accommodated in the frame body 4. If water is stored in the poly tank 50 to be used as a weight, the water can be obtained at the site where the ground maintenance is carried out, stored when necessary, and after finishing the role of the weight, it can be used for water (refer to S103 in FIG. 4) after the ground maintenance, which is convenient. Also, the weight adjustment of the poly tank 50 is not limited to water (liquid), and soil or sand may be used. Soil and sand can also be obtained at the site where the ground maintenance is carried out. Furthermore, commercially available poly tanks 50 can be used as the weight portion 5.

[0016] Regarding an example of the ground maintenance method performed using the above-mentioned compaction roller 1, a rake (not shown), and a dragonfly (not shown), it will be described with reference to the flowchart of FIG. 4. First, check the condition of the ground to be maintained and plow it using a rake (S100). For example, in the case of a baseball field, apply the rake to the areas with holes made by the spikes, the areas that have become rough due to sliding, running, and fielding, loosen the soil if there are clumps, and go around the area to be maintained evenly to scrape and lift the soil. Once the soil on the ground has loosened and settled, next, to level the ground, perform the unevenness adjustment process (S101) using a carpenter's level. Go around the plowed area evenly to flatten it into a smooth surface without unevenness. When the maintenance area has been leveled by the carpenter's level, next, perform the rolling process (S102) using the rolling roller 1. After rolling the ground to the desired hardness, next, perform the watering process (S103).

[0017] When performing the rolling process (S102) using the rolling roller 1, it is necessary to move the rolling roller 1 to the maintenance area. At this time, if the iron roller body 2 with a diameter of 250 mm and a longitudinal length of 1300 mm is moved in an empty state, it weighs about 75 kg, so it can be easily moved by rolling the roller body 2 while holding the handle part 6. Also, when the frame body 4 is configured to be detachable from the connecting part 3, the frame body 4 can be carried separately from the roller body 2. Furthermore, the poly tanks 50 whose weights can be adjusted can also be carried one by one separately. Therefore, for example, if multiple people divide the roles and carry the members (roller body 2, frame body 4, weight part 5) that make up the rolling roller 1 to the maintenance area, they can be safely moved without burden. Also, the attachment of the frame body 4 is very easy because the leg part 40a and the cylindrical body 30a can be fitted so as to cover from above the roller body 2. And since the combined weight of the roller body 2, the frame body 4, and the weight part 5 becomes the weight of the rolling roller 1, a rolling roller 1 with a sufficient weight as a rolling roller, which is 250 kg to 450 kg, can be obtained. At this time, it goes without saying that if the ground environment is such that weight adjustment at the weight part 5 is unnecessary and rolling is sufficient with the weights of the roller body 2 and the frame body 4, it is not always necessary to place the poly tank 50 on the weight part 5.

[0018] The above-mentioned ground maintenance method is just an example and is not limited thereto. For example, depending on the condition of the ground, the unevenness adjustment process (S101) or the water filling process (S103) may be omitted. The total weight of the rolling roller 1 is, for example, in the case of a baseball ground, at least 100 kg is required, but 200 kg is sufficient. To obtain a ground with appropriate elasticity, a rolling pressure of more than 300 kg is not necessary. The ideal ground condition is said to be a condition with appropriate elasticity and appropriate water retention. In particular, since the surface layer of the ground (such as natural sand) is exposed to rain and wind for 365 days, the part from the surface layer to the silt layer becomes hard when dry and sticky when wet, and phenomena such as separation into sand, soil, etc. occur and change daily. Therefore, if daily ground maintenance is neglected, it may harden so much that it cannot be plowed with a rake. Also, if the rolling pressure during ground maintenance is tightened too hard, the water retention ability will decrease, water pooling will easily occur, only the surface of the ground will harden, leading to the generation of dust and sand. In recent years, due to dislike of dust and sand, there has been an increasing trend to sprinkle "bittern" on the ground, dislike the lime line drawing using slaked lime, and fix the tape with nails, etc. However, when "bittern" is sprinkled on the ground or the tape is fixed to the ground with nails in this way, since the soil does not move, it becomes difficult to maintain the ideal elasticity and water retention, and there is a problem that a large number of nails for fixing the tape remain in the ground, which is very dangerous. According to the rolling roller 1 according to this embodiment, due to the weight reduction of the constituent members, it becomes easier to carry, and since the movement of the rolling roller 1 is easy, it leads to the utilization of the rolling roller 1. Also, the ground environment varies depending on the usage frequency, usage, maintenance level, and environment, and there are also the preferences of the administrator and user. According to the rolling roller 1 according to this embodiment, since the weight adjustment of the rolling roller 1 can be easily adjusted by the weight 5, it is easy to adjust to the desired rolling condition. Also, for example, the rolling pressure of a tennis court (regardless of whether it is clay or grass) or a lawn may be less than 100 kg. Even when used for such applications, according to the rolling roller 1 according to this embodiment, it is possible to easily adjust the weight to 100 kg or less, such as by mounting the frame body 4 with the roller body 2 in an empty state or 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 press roller 1 are not limited to the above-described embodiments. For example, the weight part 5 is not limited to the illustrated example as long as the weight can be adjusted freely. The dimensions in the longitudinal direction, the lateral direction, etc. of the roller body 2 and the frame body 4 are not particularly limited, but may be formed according to the size of the resin container (poly tank 50) serving as the weight part 5 so that a plurality of poly tanks 50 can be stacked. Although an example in which the roller body 2 is provided with an opening 21a etc. on the side surface part 21 on the premise of adjusting the storage amount in the roller body 2 has been described, it is not limited thereto, and it may be used in an empty state or in a state where the stored material is sealed in advance, and the weight adjustment may be performed by the weight part 5 without providing the opening 21a. Further, the weights of the above-described roller body 2, frame body 4, and weight part 5 are merely examples, and the size may be reduced or increased.

Explanation of Signs

[0020] 10 Vehicle 1 Rolling press roller 2 Roller body 3 Connecting part 4 Frame body 5 Weight part 6 Handle part

Claims

1. A rolling roller for land leveling, comprising: a roller body formed of a cylindrical body and rotatably supported; a connecting portion for supporting the roller body; a frame provided above the roller body; and a weight portion placed in the frame so that the weight can be adjusted.

2. In Claim 1, the frame is provided with a fitting portion that is detachably configured by fitting with a fitting portion provided on the connecting portion.

3. In Claim 1 or Claim 2, the cylindrical body is hollow, and the weight is adjusted by the amount of liquid stored in the cylindrical body.

4. In Claim 1 or Claim 2, the weight portion is a container that can be carried, 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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