Brush for bulldozer

Abstract

To provide a brush for a perforated-plate seeder capable of reducing damage to seeds.SOLUTION: The brush 10 for a perforated plate seeder includes a main body part 11 having a substantially cylindrical storage space S for storing a perforated plate therein, an installation part 12 installed between inner walls 111 of the main body part 11 and having a curved shape following the shape of the inner walls 111, an installation end part 131 detachably attached to the installation part 12, a brush base part 13 having a free end part 132 arranged on an opposite side of the installation end part 131 and in contact with the inner wall 111, and a brush part 14 arranged on the brush base part 13 so that bristles protrude from the brush base part 13 toward the perforated plate stored in the storage space S. The brush base part 13 is curved to the inside of the housing space S from the free end part 132 to the mounting end part 131 so as to guide the seeds rotating with the rotation of the perforated plate to the inside of the housing space S.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to a brush for a perforated plate seed drill. [Background technology]

[0002] The brush for a perforated plate seed sower prevents two or more seeds from falling into the seed holes of the perforated plate, prevents the seeds from concentrating near the drop opening of the perforated plate holder, and removes debris adhering to the seeds to keep the perforated plate clean. For example, as described in Patent Document 1 below, a brush 10A for a perforated plate seed sower is known, which has an inverted "L" shape and can be inserted into an insertion groove 71 provided in the side wall of the perforated plate holder 7 (see Figures 8(a) and (b)). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Utility Model Application Publication No. 1-82710 Summary of the Invention [Problem to be solved by the invention]

[0004] However, as shown in Figure 8(a), the brush 10A for a perforated plate seed sower described in Patent Document 1 is positioned perpendicular to the direction of rotation of the perforated plate 8 (see arrow), so the force pressing down on the seeds 100 carried by the rotation of the perforated plate 8 is strong, causing the problem of damaging the seeds 100 (see Figure 8(b)). In particular, when a large amount of seeds are loaded into the perforated plate, or when soft bulbs such as set onion bulbs, scallion bulbs, and garlic cloves are planted, the pressing force of the brush for a perforated plate seed sower is even stronger than in the case of seeds such as soybeans, and the probability of the bulb seeds cracking or being damaged increases.

[0005] The present invention has been made to solve such technical problems, and aims to provide a brush for a plate seed sower that can reduce damage to seeds. [Means for solving the problem]

[0006] The brush for a strainer seed drill according to the present invention is a brush for a strainer seed drill that is formed so that it can be fitted into a strainer holder and is fixed against the rotation of the strainer placed in the strainer holder, and comprises a main body portion having an approximately cylindrical storage space inside which the strainer is stored, an attachment portion that is installed between the inner walls of the main body portion and has a curved shape that follows the shape of the inner walls, a brush base that has an attachment end that is detachably attached to the attachment end and a free end that is installed opposite the attachment end and contacts the inner wall of the main body portion, and a bristle portion that is installed on the brush base so that the bristles protrude from the brush base toward the strainer placed in the storage space, and is characterized in that the brush base curves toward the inside of the storage space from the free end to the attachment end so as to guide seeds that rotate as the strainer rotates into the storage space.

[0007] In the perforated plate seed drill brush of the present invention, the brush base curves inward from the free end to the mounting end so as to guide the seeds rotating with the rotation of the perforated plate into the storage space. Therefore, the seeds rotating with the rotation of the perforated plate are guided by the curved shape of the brush base and move into the storage space, thereby reducing the pressing force of the perforated plate seed drill brush on the seeds. In other words, the perforated plate seed drill brush of the present invention utilizes the curved shape of the brush base to deflect the force pressing the seeds with the perforated plate seed drill brush, thereby reducing the pressing force of the perforated plate seed drill brush on the seeds. As a result, seed damage can be reduced.

[0008] In the brush for a perforated plate seed sower according to the present invention, it is preferable that the brush base is arranged so that the free end is located upstream and the attachment end is located downstream along the rotation direction of the perforated plate. In this way, seeds carried by the rotation of the perforated plate are guided from the free end of the brush base to the attachment end, and are therefore easily guided inside the brush base.

[0009] In addition, in the brush for a tray seed sower according to the present invention, it is preferable that the brush base is inclined so that the attachment end is above and the free end is below the ground when fitted into the tray holder. In this way, the inclination can be used to slow down the speed at which the seeds are guided from the free end to the attachment end, thereby improving the effect of reducing damage to the seeds.

[0010] In addition, in the brush for a perforated plate seed sowing machine according to the present invention, it is preferable that the attachment position of the brush base on the mounting part is adjustable so that it can be moved closer to or farther away from the perforated plate housed in the housing space. This allows the attachment position of the brush base to be adjusted depending on the type and size of the seed, thereby appropriately adjusting the pressing force of the brush for a perforated plate seed sowing machine on the seeds. As a result, damage to the seeds can be further reduced.

[0011] Furthermore, in the brush for a perforated plate seed sower according to the present invention, it is preferable that the free end be tapered toward the tip so as to eliminate any step between the free end and the inner wall of the main body with which it abuts. This reduces the force with which seeds carried by the rotation of the perforated plate strike the free end, thereby further reducing damage to the seeds. [Effects of the Invention]

[0012] According to the present invention, damage to seeds can be reduced. [Brief explanation of the drawings]

[0013] [Figure 1] 1 is an exploded perspective view showing a perforated plate type seed drill to which a brush for a perforated plate seed drill according to an embodiment is applied. [Figure 2] FIG. 1 is a perspective view showing a brush for a perforated plate seed sowing machine according to an embodiment. [Figure 3] FIG. 1 is an exploded perspective view showing a brush for a perforated plate seed sowing machine according to an embodiment. [Figure 4] FIG. 2 is a perspective view showing the main body and the installation part (as viewed from the lower left). [Figure 5]FIG. 2 is a perspective view showing the main body and the installation part (as viewed from the upper right). [Figure 6] FIG. [Figure 7] 1 is a schematic diagram for explaining the function and effect of a brush for a perforated plate seed sowing machine according to this embodiment. [Figure 8] FIG. 1 is a schematic diagram for explaining the problems of a conventional brush for a perforated plate seed sowing machine. DETAILED DESCRIPTION OF THE INVENTION

[0014] Hereinafter, an embodiment of a brush for a perforated plate seed drill according to the present invention will be described with reference to the drawings. In the description of the drawings, the same elements are designated by the same reference numerals, and duplicate explanations will be omitted. In the following description, the up-down, left-right, and front-rear directions are based on the perforated plate seed drill to which the brush for a perforated plate seed drill is applied.

[0015] Fig. 1 is an exploded perspective view showing a perforated plate seeder to which the brush for a perforated plate seeder according to the embodiment is applied. As shown in Fig. 1, the perforated plate seeder 1 is a so-called inclined perforated plate seeder, and includes a body 2 formed by welding together a plurality of metal frame members, a pair of left and right circular rotating groove cutting plates 3 journaled to the body 2 at the front of the body 2, a rotating drum 4 journaled to the body 2 at the rear of the body 2, and a rotation mechanism 5 attached to one side of the body 2 (the left side in Fig. 1).

[0016] The machine body 2 mainly comprises a pair of left and right side frames 21 extending in the front-to-rear direction of the perforated plate seeder 1, a main body box 22 positioned in the center of the machine body 2 and fixed between the pair of left and right side frames 21, and an arm 23 spanning the pair of left and right side frames 21 at the rear of the machine body 2. The arm 23 is a member for applying force to move the perforated plate seeder 1 forward using human power or agricultural machinery such as a tractor.

[0017] The pair of left and right rotary furrow cutting plates 3 are formed so that the distance between them increases toward the rear of the plate type seed drill 1, and they cut furrows by plowing through the soil in the field.

[0018] The rotating drum 4, also known as a suppression drive wheel, has a cylindrical drum body 41 and multiple vanes 42 attached to the drum body 41. The drum body 41 is fixed to the drive shaft of the rotation mechanism 5 and rotates around the drive shaft as its central axis. The vanes 42 are rectangular and are fixed to the outer edge portions of both end faces of the drum body 41 in the axial direction, and protrude radially outward from the outer circumferential surface of the drum body 41.

[0019] The rotation mechanism 5 has a drive sprocket 51 fixed to the drive shaft of the rotation mechanism 5 (in other words, the central axis of the rotating drum 4), a driven sprocket 52 for rotating the perforated plate 8, which will be described later, and an endless chain 53 wound around these sprockets. The driven sprocket 52 is fixed to one end of a rotation shaft 54 ​​of a drive bevel gear (not shown). The drive bevel gear is formed to mesh with a driven bevel gear that rotates about a rotation shaft 55 that is perpendicular to the rotation shaft 54 ​​of the drive bevel gear.

[0020] In this embodiment, the rotation shaft 54 ​​of the drive bevel gear extends in the left-right direction of the perforated plate seeder 1, and the rotation shaft 55 of the driven bevel gear extends in the up-down direction of the perforated plate seeder 1. A perforated plate 8 is further fixed to the upper end of the rotation shaft 55 of the driven bevel gear. In other words, in this embodiment, the drive bevel gear having the rotation shaft 54 ​​extending in the left-right direction and the driven bevel gear having the rotation shaft 55 extending in the up-down direction constitute a power transmission mechanism.

[0021] Therefore, when the rotating drum 4 rotates, the drive sprocket 51 rotates, and the driven sprocket 52, which is connected to the drive sprocket 51 by the endless chain 53, also rotates. As the driven sprocket 52 rotates, the drive bevel gear having a rotating shaft 54 ​​rotates, causing the driven bevel gear meshing with it to rotate. This causes the rotating shaft 55 of the driven bevel gear to rotate, which in turn rotates the perforated plate 8 fixed to the rotating shaft 55.

[0022] As shown in Figure 1, a chute 6 is disposed in the center of the front of the machine body 2. The chute 6 is connected to a strainer holder 7 disposed above. More specifically, the chute 6 has a square gutter shape that is open at the front, and extends diagonally downward from a drop opening 72 in the strainer holder 7 (see Figure 7 described below) at the front side of the strainer type seed drill 1, allowing seeds that have fallen from the drop opening 72 in the strainer holder 7 to slide down into the field. The chute 6 is fixed to the machine body 2 via a hook provided at the rear of the chute 6.

[0023] The strainer holder 7 is fixed to the front of the machine body 2 with screws or the like. The strainer holder 7 is made of a transparent plastic material so that the inside can be seen from the outside. The strainer holder 7 is box-shaped and open at the top, providing space inside to accommodate the strainer 8 and the strainer seed drill brush 10, etc. A hopper 9 for storing seeds is fitted into the top of the strainer holder 7. In other words, the hopper 9 is arranged on top of the strainer holder 7 so as to cover the upper opening of the strainer holder 7. The hopper 9 has an upper lid 91 that can be opened and closed freely.

[0024] The perforated plate 8 is a so-called distribution perforated plate, and is disk-shaped with multiple cutouts 81 on its periphery. A through hole 82 is formed in the center of the perforated plate 8, through which the rotation shaft 55 of the driven bevel gear described above passes. The cutouts 81 serve as seed holes in the perforated plate 8, and are provided at equal intervals around the circumference of the perforated plate 8. When viewed from the top to bottom, the cutouts 81 form a rectangular recess that can accommodate one seed. The perforated plate 8 having this structure is rotatably arranged in the perforated plate holder 7 by a perforated plate fixture 83 (see Figure 7) screwed onto the tip of the rotation shaft 55, with the rotation shaft 55 of the driven bevel gear inserted through the through hole 82.

[0025] The perforated plate 8 is also provided with a plurality of protrusions 84 to prevent seeds placed on the perforated plate 8 from falling into the adjacent notches 81. As shown in FIG. 7, the protrusions 84 are provided in a one-to-one correspondence with the notches 81, and are arranged downstream of the notches 81 along the rotational direction of the perforated plate 8. The protrusions 84 have the shape of an elongated rectangular parallelepiped extending in the radial direction.

[0026] A brush 10 for a strainer seed drill according to this embodiment is further attached inside the strainer holder 7. The brush 10 for a strainer seed drill according to this embodiment will be described below with reference to Figures 2 to 6. Figure 2 is a perspective view showing the brush for a strainer seed drill according to the embodiment, and Figure 3 is an exploded perspective view showing the brush for a strainer seed drill according to the embodiment. Figure 4 is a perspective view showing the main body and the mounting part (as viewed from the lower left), and Figure 5 is a perspective view showing the main body and the mounting part (as viewed from the upper right). Figure 6 is a diagram showing the brush base, where (a) is a plan view of the brush base, (b) is a front view of the brush base, and (c) is a bottom view of the brush base.

[0027] The brush 10 for a strainer seed drill in this embodiment is formed so that it can be fitted into the strainer holder 7, and is fixed against the rotation of the strainer 8 placed in the strainer holder 7. The brush 10 for a strainer seed drill comprises a substantially cylindrical main body 11, an installation part 12 arranged so as to diagonally cross the internal space of the main body 11 (i.e., the storage space S described below), a brush base 13 detachably attached to the installation part 12, and a bristle part 14 provided on the brush base 13.

[0028] The main body 11 has a shape that allows it to be fitted inside the strainer holder 7 and is fixed to the strainer holder 7 when fitted into the strainer holder 7. Specifically, the main body 11 has a shape that combines a rectangular front portion with a semicircular rear portion so that it fits the shape of the strainer holder 7. When fitted into the strainer holder 7, the two corners 113 at the front of the main body 11 fit into the corners of the strainer holder 7, and the circumferential portion 114 at the rear fits into the inner wall of the strainer holder 7.

[0029] The interior of the main body 11 has a roughly cylindrical storage space S that houses the strainer 8. As shown in Figure 4, a cutout 112 is formed in the front of the inner wall 111 of the main body 11 that forms the storage space S. The cutout 112 is a structure that prevents interference with the side wall of the strainer holder 7 when the strainer seed drill brush 10 is fitted into the strainer holder 7 to be attached. If the side wall of the strainer holder 7 is made large enough to prevent interference, the cutout 112 does not need to be provided. In this case, the storage space S becomes a perfect cylinder.

[0030] The bridging portion 12 is installed between the inner walls 111 of the main body portion 11 so as to cross diagonally above the strainer 8 housed in the storage space S. The bridging portion 12 has a rectangular extending portion 121 that is connected to the main body portion 11 and extends from the inner wall 111 toward the storage space S, a curved portion 122 that is connected to the tip of the extending portion 121 and has a curved shape that follows the shape of the inner wall 111, and a bridging portion 123 that connects the end of the curved portion 122 to the inner wall 111 of the main body portion 11.

[0031] The curved portion 122 includes a sidewall portion 122b bent from the extension portion 121 and curved parallel to the inner wall 111 of the main body portion 11, and a roof portion 122a protruding from above the sidewall portion 122b and forming an inverted L-shaped cross section together with the sidewall portion 122b. Two bolt insertion holes 122c are formed in the sidewall portion 122b at a predetermined distance. The bolt insertion holes 122c are elongated ovals that are long in the vertical direction. By making the bolt insertion holes 122c elongated in the vertical direction, the position of the brush base 13 fixed to the mounting portion 12 by a bolt inserted through the bolt insertion hole 122c can be adjusted in the vertical direction. The roof portion 122a is formed perpendicular to the sidewall portion 122b. This roof portion 122a is a structure that limits the upper limit position of the brush base 13 attached to the sidewall portion 122b.

[0032] The bridge portion 123 is formed in a claw shape having an outer curve and an inner curve. The outer curve of the bridge portion 123 is connected to the inner wall 111 of the main body 11, and the inner curve faces the storage space S, and the bridge portion 123 is formed over a predetermined section of the inner wall 111.

[0033] As shown in Figure 5, a space R is formed outside the erection section 12, surrounded by the extension section 121, the curved section 122, the bridging section 123, and the inner wall 111 of the main body section 11. The space R is in communication with the cutout 112. This space R is designed to enable the state of the seeds inside the strainer receiver 7 to be confirmed from the outside even when the hopper 9 is attached to the strainer receiver 7. In other words, when the hopper 9 is attached to the strainer receiver 7, the state of the seeds inside the strainer receiver 7, particularly the state of the seeds outside the curved section 122, can be confirmed through the space R.

[0034] The main body 11 and the bridging portion 12 having the above-described structure are integrally formed from, for example, a hard resin material, such as polyvinyl chloride, polyamide, polycarbonate, polyethylene terephthalate, or polymethyl methacrylate.

[0035] 3 and 6, the brush base 13 is formed in a stepped crescent shape. The brush base 13 has an attachment end 131 that is detachably attached to the bridge portion 12, a free end 132 that is located on the opposite side of the attachment end 131 and contacts the inner wall 111 of the main body portion 11, and a connecting portion 133 that connects the attachment end 131 and the free end 132. The brush base 13 is curved inwardly of the storage space S from the free end 132 to the attachment end 131 so as to guide the seeds that rotate with the rotation of the perforated plate 8 into the storage space S.

[0036] That is, the brush base 13 is formed in a curved arc shape from the free end 132 to the attachment end 131 so as to guide the seeds carried by the rotation of the perforated plate 8 into the inside of the brush base 13. In this embodiment, the inside of the brush base 13 and the inside of the storage space S each refer to the center side of the storage space S, and the outside of the brush base 13 and the outside of the storage space S each refer to the side away from the center of the storage space S.

[0037] Specifically, the free end 132 is curved so as to inscribe itself in the inner wall 111 of the main body 11. The free end 132 is tapered toward the tip so as to prevent a step from occurring between the free end 132 and the inner wall 111 of the main body 11 that it inscribes. In other words, when viewed from the top-bottom direction, the free end 132 gradually narrows toward the tip.

[0038] The mounting end 131 is formed in an arc shape to have the same curvature as the curved portion 122 of the installation portion 12. Two circular holes 131a are formed in the mounting end 131 corresponding to the bolt insertion holes 122c of the curved portion 122. The two circular holes 131a are spaced the same distance from each other in the circumferential direction of the mounting end 131 as the two bolt insertion holes 122c formed in the curved portion 122. The mounting end 131 is attached to the installation portion 12 by inserting bolts into the circular holes 131a and the bolt insertion holes 122c from the mounting end 131 side with the two circular holes 131a aligned with the bolt insertion holes 122c of the curved portion 122 and then screwing nuts onto the bolts from the outside of the curved portion 122. Furthermore, by adjusting the installation position of the brush base 13 in the vertical direction, the bristle unit 14 provided on the brush base 13 can be moved closer to or farther away from the strainer accommodated in the accommodation space.

[0039] On the other hand, the connecting portion 133 is disposed between the attachment end portion 131 and the free end portion 132 and is formed, for example, in an arc shape so as to have the same curvature as the attachment end portion 131 .

[0040] The brush base 13 also has a movement restricting portion 134 arranged on the side opposite the free end 132 of the mounting end 131. As shown in Fig. 6, the movement restricting portion 134 is bent from the mounting end 131 connected thereto outward from the brush base 13 and formed into a rectangular plate. As shown in Fig. 2, when the brush base 13 is attached to the installation part 12, the movement restricting portion 134 abuts against the vertical end faces of the extension part 121, restricting the circumferential movement of the brush base 13.

[0041] 3 and 6(b), in the vertical direction, the mounting end 131 and the movement restricting portion 134 have the same thickness, and the connecting portion 133 and the free end 132 have the same thickness. The thicknesses of the mounting end 131 and the movement restricting portion 134 are greater than the thicknesses of the connecting portion 133 and the free end 132. This creates a step between adjacent mounting end portions 131 and connecting portions 133.

[0042] 6(c), an arcuate groove 135 is provided on the bottom surface of the brush base 13. The arcuate groove 135 is formed across the range of the attachment end 131 and the connecting portion 133. The bristle part 14 is attached to the arcuate groove 135.

[0043] The movement restricting portion 134, the mounting end portion 131, the connecting portion 133, and the free end portion 132 are integrally formed from a hard resin material, similar to the main body portion 11 and the installation portion 12. Examples of the resin material include polyvinyl chloride, polyamide, polycarbonate, polyethylene terephthalate, and polymethyl methacrylate.

[0044] As shown in Figure 7, in this embodiment, the brush base 13 is positioned so that the free end 132 is located upstream and the attachment end 131 is located downstream along the rotation direction of the strainer 8. When the strainer seed drill brush 10 is fitted into the strainer holder 7, the brush base 13 is inclined relative to the ground so that the attachment end 131 is above and the free end 132 is below.

[0045] On the other hand, the bristles of the bristles of the brush part 14 are formed so that the tips of the bristles protrude from the brush base 13 toward the strainer 8 housed in the housing space S (see FIG. 2). The bristles of the brush part 14 may be made of synthetic fibers such as nylon, or animal hair such as pig bristles.

[0046] In the brush 10 for a perforated plate seed sower according to this embodiment, the brush base 13 curves inwardly from the free end 132 to the attachment end 131 so as to guide the seeds rotating with the rotation of the perforated plate 8 into the storage space S. As a result, the seeds carried by the rotation of the perforated plate 8 are guided by the curved shape of the brush base 13 and move into the storage space S, thereby reducing the pressing force of the brush 10 for a perforated plate seed sower on the seeds. That is, the brush 10 for a perforated plate seed sower according to this embodiment utilizes the curved shape of the brush base 13 to deflect the force that the brush 10 for a perforated plate seed sower would press against the seeds, thereby reducing the pressing force of the brush 10 for a perforated plate seed sower on the seeds. As a result, damage to the seeds can be reduced.

[0047] Furthermore, the brush base 13 has its free end 132 located upstream in the direction of rotation of the strainer 8, and its attachment end 131 located downstream. As a result, seeds carried by the rotation of the strainer 8 are guided from the free end 132 of the brush base 13 to the attachment end 131, making it easier to guide them inside the storage space S. Furthermore, when fitted into the strainer holder 7, the brush base 13 is inclined so that the attachment end 131 is above and the free end 132 is below the ground. Therefore, the inclination can be used to slow down the speed at which the seeds are guided from the free end 132 to the attachment end 131, thereby improving the effect of reducing damage to the seeds.

[0048] The brush base 13 has an adjustable mounting position on the mounting portion 12 so that it can be moved closer to or farther away from the perforated plate 8 housed in the housing space S of the main body 11. This allows the mounting position of the brush base 13 to be adjusted according to the type and size of the seed, thereby enabling the force of the perforated plate seed sowing brush 10 pressing against the seeds to be appropriately adjusted. As a result, damage to the seeds can be further reduced. Furthermore, the free end 132 tapers toward its tip so that there is no step between it and the inner wall 111 of the main body 11 that it inscribes. This reduces the force with which seeds carried by the rotation of the perforated plate 8 hit the free end 132, further reducing damage to the seeds.

[0049] The above-mentioned operational effects of the brush 10 for a strainer seed drill will be explained in more detail below with reference to Figure 7. As shown in Figure 7(a), when the brush 10 for a strainer seed drill is fitted into the strainer holder 7, the strainer 8 placed in the strainer holder 7 is housed in the housing space S. As described above, the strainer 8 is rotatably attached to the strainer holder 7 by the strainer fixing device 83 which is screwed onto the tip of the rotating shaft 55 of the driven bevel gear with the rotating shaft 55 inserted into the insertion hole 82 of the strainer 8.

[0050] As shown in FIG. 7(b), when the perforated plate 8 rotates counterclockwise (see arrow), the seeds (e.g., set onion bulbs) 100 are guided by the curved shape of the brush base 13 and move inside the storage space S. Therefore, the seeds 100 move along the curved shape of the brush base 13 from the free end 132 toward the attachment end 131 (see FIG. 7(c)). Furthermore, since the brush base 13 is attached to the perforated plate holder 7 at an angle with the attachment end 131 facing up and the free end 132 facing down relative to the ground, the seed's movement speed slows as it approaches the attachment end 131. As a result, the pressing force of the perforated plate planter brush 10 on the seeds 100 is weakened, reducing damage to the seeds 100.

[0051] Furthermore, the brush base 13 is inclined relative to the ground so that the attachment end 131 is at the top and the free end 132 is at the bottom, and so seeds 100 that reach the top of the attachment end 131 slide down due to gravity, enter the notches 81 in the strainer 8, and are carried to the drop opening 72 in the strainer holder 7 by the rotation of the strainer 8. On the other hand, if the seeds 100 that have slid down do not enter the notches 81, they move again from the free end 132 toward the attachment end 131 along the curved shape of the brush base 13 as the strainer 8 rotates.

[0052] The present invention will be described below with reference to examples, but the present invention is not limited to the scope of the examples.

[0053] [Examples and Comparative Examples] In the examples, set bulbs of onions were used as seeds, and the brush 10 for a perforated plate seeder (product of the present invention) described in the above embodiment was fitted into the perforated plate holder 7. The perforated plate 8 was rotated at a constant speed for 5 minutes, and the falling rate and overall damage rate of the set bulbs of onions were investigated. The number of bulbs used and the results of the investigation are summarized in Table 1. The overall damage rate was calculated as follows: Overall damage rate = (number of damaged bulbs that fell + number of damaged bulbs on the perforated plate) / number of bulbs used.

[0054] In the comparative example, a conventional brush 10A for a perforated plate seeding machine (conventional product) shown in Figure 8 was fitted into the perforated plate holder 7, and the perforated plate 8 was rotated at a constant speed for 5 minutes under the same conditions as in the example, and the drop rate of set onion bulbs, the overall damage rate, etc. were investigated. The number of bulbs used and the results of the investigation are summarized in Table 1.

[0055] [Table 1]

[0056] As shown in Table 1, when using the brush for a plate seed sower of the present invention, the drop rate was 100% and the overall damage rate was significantly reduced compared to the conventional product. Therefore, the brush for a plate seed sower of the present invention was shown to be effective in reducing damage to seeds.

[0057] Although the embodiments of the present invention have been described in detail above, the present invention is not limited to the above-described embodiments, and various design modifications can be made without departing from the spirit of the present invention as set forth in the claims. [Explanation of symbols]

[0058] 1: perforated plate type seeder, 2: machine body, 3: rotating groove cutting plate, 4: rotating drum, 5: rotation mechanism, 6: shooter, 7: perforated plate holder, 8: perforated plate, 9: hopper, 10: perforated plate seeder brush, 11: main body, 12: installation part, 13: brush base, 14: brush part, 111: inner wall, 112: notch, 113: corner part, 114: circumference part, 121: extension part, 122: curved part, 122a: roof part, 122b: side wall part, 122c: bolt insertion hole, 123: bridge part, 131: mounting end, 131a: circular hole, 132: free end, 133: connecting part, 134: movement restriction part, S: storage space

Claims

1. A brush for a perforated seed sowing machine that is formed to be able to be fitted into a perforated tray receiver and is fixed relative to the rotation of the perforated tray placed in the perforated tray receiver, a main body having a substantially cylindrical storage space therein for storing the perforated plate; a bridge portion that is bridged between the inner walls of the main body portion and has a curved shape that follows the shape of the inner walls; a brush base having an attachment end portion detachably attached to the bridge portion and a free end portion disposed opposite the attachment end portion and in contact with an inner wall of the main body portion; a brush part disposed on the brush base such that the bristles protrude from the brush base toward the perforated plate accommodated in the accommodation space; Equipped with A brush for a perforated plate seeder, characterized in that the brush base curves toward the inside of the storage space from the free end to the mounting end so as to guide seeds that rotate as the perforated plate rotates into the storage space.

2. A brush for a perforated plate seeder as described in claim 1, wherein the brush base is arranged so that the free end is located upstream and the mounting end is located downstream along the rotation direction of the perforated plate.

3. A brush for a plate seeder as described in claim 2, wherein when fitted into the plate holder, the brush base is inclined so that the mounting end is above and the free end is below the ground.

4. A brush for a strainer seed drill as described in claim 1, wherein the brush base has an adjustable mounting position on the mounting part so that it can be moved closer to or farther away from the strainer housed in the storage space.

5. 2. A brush for a perforated plate seed drill as described in claim 1, wherein the free end is tapered toward the tip so that no step is created between the free end and the inner wall of the main body portion with which it contacts.

Images