Lime spreader

Abstract

To provide a lime spreader having a simple structure, capable of spreading lime without any problem even on a ridge with an extremely narrow flat part because a drum rolls on the soil, and capable of performing lime spreading work in a comfortable posture according to a work place.SOLUTION: A lime spreader according to the present invention is a lime spreader including a rotary drum for storing lime and a traction tool provided on a pivot shaft of the rotary drum, wherein at least a rotary wall surface of the rotary drum has a double mesh structure of an outer wall surface and an inner wall surface, and a size of a mesh of the outer wall surface is larger than a size of a mesh of the inner wall surface. It is preferable that all or some of the plurality of meshes of the inner wall surface are arranged so as to overlap one mesh of the outer wall surface with respect to the ventilation direction.

Description

[Technical Field]

[0001] The present invention relates to a lime spreader, and more particularly to a lime spreader having a simple structure that allows the worker to perform lime spreading work in a comfortable posture depending on the work location. [Background technology]

[0002] For example, a conventional lime spreader shown in Patent Document 1, which is intended to spread lime on farms, stores lime in a case attached to a tractor, has an opening in the case, and is covered with an opening / closing body that can be opened and closed. Furthermore, as shown in Patent Document 2, a lime spreader for use in poultry farms has been proposed, which is provided with a towing tool and wheels on a lime storage case that stores lime, and a lime discharge mechanism for spreading lime at the bottom of the lime storage case, with the rotating shaft of the wheels and the drive shaft of the lime discharge mechanism interlocked via a ratchet mechanism, so that when the vehicle is towed forward, the drive shaft rotates together with the rotating shaft of the wheels, causing lime to be spread from the lime discharge mechanism, and when the vehicle is towed backward, the rotating shaft of the wheels spins idly, preventing lime from being spread from the lime discharge mechanism.

[0003] Generally, a line marker is used to draw lines (white lines) on school grounds or athletic fields, as shown in Patent Document 3. This conventional line marker, which forms lines on the ground using lime powder, includes a cylindrical lime powder storage section for storing lime powder, and a drum section attached to the lower end of the lime powder storage section, having a plurality of fins, rotatably fixed to an axle attached to the lower end of the lime powder storage section along the width direction, and discharging lime powder through holes attached to the lower end using the fins. When a wheel fitted to the axle rotates, the fins inside the lime powder storage section rotate in conjunction with the axle, causing lime powder to fall through the holes, thereby drawing a line. Furthermore, the line drawing tool shown in Patent Document 4 comprises a cylindrical lime powder storage section for storing lime powder, and a drum section provided at the lower end of the lime powder storage section, having a plurality of fins, rotatably fixed to a shaft section provided along the width direction at the lower end of the lime powder storage section, and discharging lime powder through holes provided at the lower end using the fins, and the drum section has a rotation center fixed to the shaft section and provided with the fins, and the radial dimension of the rotation center is formed to be more than half the length dimension from the rotation center of the shaft section to the tip of the fin.

[0004] Products available on the market include the push-type spreaders described in Non-Patent Document 1 and Non-Patent Document 2. The former can spread lime in a hopper by rotating two tires on both ends of the hopper, while the latter can spread lime in a hopper by rotating one tire. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Japanese Utility Model Application Publication No. 02-123819 [Patent Document 2] Japanese Patent Publication No. 2022-65274 [Patent Document 3] Japanese Utility Model Application Publication No. 55-168372 [Patent Document 4] Utility Model Registration No. 3174842 [Non-patent literature]

[0006] [Non-Patent Document 1] MBC-20D manufactured by Minato Electric Industry Co., Ltd. https: / / minatodenki-online.jp / shopdetail / 000000010106 / [Non-patent document 2] Harax FR-550 https: / / harax.co.jp / catalogue / #page / 52 DISCLOSURE OF THE INVENTION [Problem to be solved by the invention]

[0007] However, the spreaders in Patent Documents 1 and 2 are not suitable for use on ridges where lime is to be spread. Furthermore, the line drawing tools disclosed in Patent Documents 3 and 4 have different purposes of use to begin with, and there are problems with using them for agricultural purposes. Furthermore, the sprayer in Non-Patent Document 1 is designed with long tires, each measuring 52 cm wide. While it can be used on ridges with flat sections at 52 cm above the ground, it is difficult to drive on ridges shorter than 52 cm. It is particularly unsuitable for use on ridges for crops that require soil mulching, such as white onions and black beans. The sprayer in Non-Patent Document 2, with its single wheel, runs unstably, making it difficult for farmers to push the wheelbarrow after loading 20 kg of lime into the hopper and then lifting the handlebars. Furthermore, the hopper is located at a high height of approximately 67 cm, requiring the hopper to be lifted more than 67 cm when adding lime, which can be difficult for older farmers.

[0008] Therefore, the present invention has been made in consideration of the above problems, and aims to provide a lime spreader with a simple structure that can spread lime without any problems even on ridges with extremely narrow flat areas because the drum rolls on the soil, and that allows spreading work to be done in a comfortable position depending on the work location. [Means for solving the problem]

[0009] The lime spreader according to the present invention comprises a rotary drum for storing lime and a towing device attached to the pivot of the rotary drum, wherein at least the rotating wall of the rotary drum has a double mesh structure consisting of an outer wall surface and an inner wall surface, and the mesh size of the outer wall surface is larger than that of the inner wall surface. Preferably, the meshes of the inner wall surface are arranged so that all or part of the meshes of the inner wall surface overlap one mesh of the outer wall surface in the direction of ventilation.

[0010] The lime spreader according to the present invention comprises a rotary drum for storing lime and a towing device attached to the pivot of the rotary drum, wherein at least the rotary drum has a mesh structure on its rotating wall, and a mesh-structured cylinder can be detachably stored inside the rotary drum, and the mesh size of the rotating wall of the rotary drum is larger than the mesh size of the cylinder's wall. Furthermore, the mesh size of the cylinder's wall may be arranged so that all or part of the meshes on one of the rotating wall's meshes overlaps with one of the meshes on the rotating wall in the direction of ventilation.

[0011] Furthermore, the lime spreader of the present invention is a lime spreader comprising a rotary drum for storing lime and a towing device attached to the pivot of the rotary drum, wherein the rotary drum has a rotating wall surface with a mesh structure and is provided with a removable inner tube with a mesh structure inside, and the size of the mesh on the rotating wall surface of the rotary drum is larger than the size of the mesh on the wall surface of the inner tube. [Effects of the Invention]

[0012] The lime spreader of the present invention has a drum that rolls over the soil, making it possible to spread lime without any problems even on ridges with extremely narrow flat areas. Furthermore, it can be driven by simply lifting the lightweight handle, and lime can be spread either by pushing or pulling the handle, allowing for a comfortable position for spreading work depending on the work location. Furthermore, the low drum position makes it extremely easy to load lime into the drum. [Brief explanation of the drawings]

[0013] [Figure 1] 1 is a schematic perspective view of a lime spreader according to the present invention; [Figure 2] 1 is a side view of a lime spreader according to the present invention. [Figure 3] FIG. 2 is a rear view of the lime spreader according to the present invention. [Figure 4] 1 is a diagram showing the relationship between the outer wall surface and the inner wall surface of the rotary drum of the lime spreader according to the present invention. FIG. [Figure 5]FIG. 2 is a schematic diagram showing how lime stored in a rotary drum of the lime spreader according to the present invention is discharged. DETAILED DESCRIPTION OF THE INVENTION

[0014] Hereinafter, embodiments of the present invention will be described in detail. However, the present invention is not limited to the embodiments shown below. Hereinafter, the present invention will be described in detail. [Example]

[0015] Please refer to Figures 1 to 3. Figure 1 is a schematic perspective view of a lime spreader according to the present invention. Figure 2 is a side view of a lime spreader according to the present invention. Figure 3 is a rear view of a lime spreader according to the present invention. The lime spreader 100 comprises a rotary drum 1 that contains lime, and a towing device 2 attached to a pivot 13 of the rotary drum 1. As shown in FIG. 1, at least the rotating wall surface of the rotary drum 1 has a double mesh structure consisting of an outer wall surface 10 and an inner wall surface 11, and it can be seen that the mesh size of the outer wall surface 10 is larger than the mesh size of the inner wall surface 11. The lime spreader 100 of the present invention is used by rolling the drum 1 over the soil, so lime can be spread without any problems even on ridges with extremely narrow flat areas. Furthermore, the lime spreader 100 of the present invention has a lightweight towing tool 2, and can be driven by simply lifting the handle (not shown). Lime can be spread by either pushing or pulling the towing tool 2, allowing for a comfortable posture depending on the work location. Furthermore, since the drum 1 is positioned low, loading lime into the drum 1 is also very easy.

[0016] Please refer to Figure 4. Figure 4 is a diagram showing the relationship between the outer wall surface 10 and the inner wall surface 11 of the rotary drum of the lime spreader according to the present invention, where (a) is a schematic perspective view of the rotary drum 1, and (b) is a diagram showing the mesh sizes of the outer wall surface 10 and the inner wall surface 11.

[0017] As shown in Figure 4(a), at least the rotating wall surface of the rotary drum 1 has a double mesh structure consisting of an outer wall surface 10 and an inner wall surface 11. Also, from Figure 4(b), it can be seen that the size of the mesh on the outer wall surface 10 is larger than the size of the mesh on the inner wall surface 11. In this way, a double mesh structure is formed with the very coarse mesh on the outer wall surface 10 and the fine mesh on the inner wall surface 11 attached together, and this structure makes it easy to spread lime (powder), which has previously been difficult.

[0018] Please refer to Fig. 5. Fig. 5 is a schematic diagram showing how lime L stored in the rotary drum 1 of the lime spreader 100 according to the present invention is discharged. As shown in Figure 5, lime L contained in rotary drum 1 is stirred inside the drum as rotary drum 1 rolls on the ground, and as shown by the arrows, passes through the fine mesh of inner wall surface 11, then through the coarse mesh of outer wall surface 10, and is discharged to the outside. It is preferable to arrange the meshes of inner wall surface 11 so that all or part of one mesh of outer wall surface 10 overlaps with one mesh of inner wall surface 11 in the direction of ventilation. In other words, the amount of lime L discharged is limited by the fine mesh of inner wall surface 11, but once it passes through the mesh of inner wall surface 11, it can easily pass through the coarse mesh of outer wall surface 10.

[0019] The outer wall surface 10 and the inner wall surface 11 may be formed by rolling two thin metal mesh plates made of different mesh sizes, such as steel or stainless steel, that are bonded together. Furthermore, the inner wall surface 11 may be formed by using a mesh bag made of polyester or the like that is used in a typical washing machine during washing, and a mesh bag of a size that fits along the outer wall surface 10 may be made detachable. Alternatively, the rotary drum having only the outer wall surface 10 may have a detachable inner cylinder wall surface as the inner wall surface 11. In this case, the lime L is contained in the inner cylinder.

[0020] While the preferred embodiment of the lime spreader according to the present invention has been illustrated and described above, it will be understood that various modifications can be made without departing from the spirit and scope of the present invention. [Industrial Applicability]

[0021] The lime spreader according to the present invention has a simple configuration, is easy to use, and can be widely used by individual farmers, large-scale agricultural corporations, and other agricultural enterprises regardless of scale. In addition, by changing the mesh size of the inner wall surface, it is possible to spread fertilizers other than powder (for example, moist fertilizer), making it widely usable. [Explanation of symbols]

[0022] 100 lime spreader 1 rotating drum 10 Exterior wall surface 11 Inner wall surface 13 Axis 14 Opening and closing doors 2 Traction device L lime

Claims

1. A lime spreader comprising a rotary drum for storing lime and a towing device attached to the pivot of the rotary drum, The rotating drum is characterized in that at least the rotating wall surface has a double mesh structure consisting of an outer wall surface and an inner wall surface, and the mesh size of the outer wall surface is larger than the mesh size of the inner wall surface.

2. 2. The lime spreader according to claim 1, wherein the meshes on the inner wall surface are arranged so that all or part of the meshes on the inner wall surface overlap one of the meshes on the outer wall surface in the direction of ventilation.

3. A lime spreader comprising a rotary drum for storing lime and a towing device attached to the pivot of the rotary drum, At least the rotating wall surface of the rotary drum has a mesh structure, Furthermore, this lime spreader is characterized in that a cylindrical body with a mesh structure can be removably stored inside the rotating drum, and the size of the mesh on the rotating wall surface of the rotating drum is larger than the size of the mesh on the wall surface of the cylindrical body.

4. 4. The lime spreader according to claim 3, wherein the plurality of meshes on the wall surface of the cylindrical body are arranged so that all or part of the meshes on the rotating wall surface overlap one of the meshes on the rotating wall surface in the direction of airflow.

5. A lime spreader comprising a rotary drum for storing lime and a towing device attached to the pivot of the rotary drum, The rotating drum has a rotating wall surface with a mesh structure and a removable inner tube with a mesh structure inside, and the mesh size of the rotating wall surface of the rotating drum is larger than the mesh size of the wall surface of the inner tube.

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