JP4809686B2 - Feeding device - Google Patents

Description

  The present invention relates to a configuration of a feeding device that feeds granular materials such as fertilizers, seeds, and medicines by rotating a feeding roll by a certain amount.

Conventionally, a fertilizer seeding machine is attached to the rear part of a traveling vehicle such as a tractor, and in the fertilizer seeding machine, a feeding device is provided below a hopper that is filled with fertilizer, seeds, medicines, etc., and a feeding roll in the feeding device is provided. By rotating the tractor in accordance with the traveling of the tractor, granular materials such as fertilizers, seeds, and medicines are discharged in a certain amount. And in such a fertilizer seeding machine, the technique of dropping the granular material in the hopper into the feeding recess of the feeding roll from the upper part of the hopper, transporting it downward along with the rotation of the feeding roll, and feeding it by a fixed amount is known. ing. With respect to the feeding device having such a configuration, Patent Document 1 discloses a technique such as providing a vertical surface inside the guide funnel at the lower portion of the feeding device so as not to cause variations in seed drop intervals. Moreover, in patent document 2 and patent document 3, the technique of improving sowing precision by providing a guide plate in the outer peripheral part of a feeding roll is disclosed. Patent Document 4 discloses a technique for stably feeding seeds using a rotatable guide body.
JP 2003-125615 A Japanese Utility Model Publication No. 3-79612 JP-A-9-168317 JP 2005-58060 A

However, in the feeding device provided with the guide plate as disclosed in Patent Literature 2 and Patent Literature 3, since the guide plate is formed in a plate-like integrated structure, the seed is bitten between the feeding roll and the guide plate. If this occurs, a gap may be generated between the feeding roll and the guide plate, and seeds in the middle of conveyance may spill out from the feeding recess. In other words, the guide function of the guide plate did not work sufficiently, resulting in variations in seed drop intervals. Furthermore, the larger the seeds, the more likely the problems described above occur, and it becomes difficult to maintain a constant seeding interval, resulting in a row seeding state. In addition, when the seedling is sown, the seedling grows in an overcrowded state without a gap, and air is easily stagnated without passing the wind. As a result, moisture accumulates and diseases are more likely to occur. Furthermore, even when a disease or pest occurs in some areas, there is a problem that it spreads to a wide area because it is easily transmitted to adjacent seedlings. Therefore, it is necessary to perform spotting with high accuracy.
Therefore, an object of the present invention is to provide a feeding device capable of spotting on a farm field with high accuracy.

  The problem to be solved by the present invention is as described above. Next, means for solving the problem will be described.

In Claim 1, the hopper which accommodates a granular material, The feeding roll which is rotatably provided in the lower opening vicinity of this hopper, and has a feeding recessed part in an outer peripheral part, The outer periphery of a feeding roll to the fall position under this feeding roll In the feeding device provided with a guide portion that guides the granular material so as not to fall from the feeding recess by covering the guide portion, the guide portion can be elastically deformed with a low friction layer that is in sliding contact with the outer peripheral portion of the feeding roll. An intermediate buffer layer and a base portion having rigidity that is not elastically deformed even by a stress generated during feeding , a brush portion is provided between the guide portion from the vicinity of the lower opening of the hopper, and the tip of the brush portion is A scraping portion that is brought into sliding contact with the outer peripheral portion of the feeding roll and is in contact with the outer peripheral portion of the feeding roll is provided at an upper portion of the brush portion, and the scraping portion is provided on the feeding roll. Which is constituted by members having the wear-resistant with respect to the circumferential portion.

According to a second aspect of the present invention, in the feeding device according to the first aspect, the feeding recesses are arranged at equal intervals on the outer peripheral portion of the feeding roll, and the arc length between the feeding recesses is an abbreviation of the arc length of the feeding recess. It is provided to be twice or more.

According to a third aspect of the present invention, in the feeding device according to the first or second aspect, at least one of the opposing cross-sectional corners of the feeding recess is rounded or chamfered.

According to a fourth aspect of the present invention, in the feeding device according to any one of the first to third aspects, a windshield means is provided at a lower portion of the feeding device, and the main body or surface of the windshield means is provided with a slippery and repellent surface. It is composed of a good water-based member.

  As effects of the present invention, the following effects can be obtained.

  In Claim 1, the hopper which accommodates a granular material, The feeding roll which is rotatably provided in the lower opening vicinity of this hopper, and has a feeding recessed part in an outer peripheral part, The outer periphery of a feeding roll to the fall position under this feeding roll In the feeding device provided with a guide portion that guides the granular material so as not to fall from the feeding recess by covering the guide portion, the guide portion can be elastically deformed with a low friction layer that is in sliding contact with the outer peripheral portion of the feeding roll. The intermediate buffer layer and the base portion having rigidity that is not elastically deformed by the stress generated during feeding, so that the seed from the feeding recess when the granular material is caught between the feeding roll and the guide portion. Can prevent falling. Therefore, the spotting accuracy is improved as compared with the conventional case, and the spotting interval can be made constant.

  In addition, a brush portion is provided between the guide portion from the vicinity of the lower opening of the hopper, and the tip of the brush portion is brought into sliding contact with the outer peripheral portion of the feeding roll, thereby filling the feeding concave portion of granular materials such as seeds. Can be performed efficiently.

  Further, by providing a scraping portion that contacts the outer peripheral portion of the feeding roll at the upper portion of the brush portion, and the scraping portion is made of a member having wear resistance with respect to the outer peripheral portion of the feeding roll, It becomes possible to reduce the biting of the granular material when the buffer layer is provided. Moreover, since the scuffing performance with respect to the feeding roll can be improved as compared with the conventional one using only the brush, the filling of the feeding concave portion with the granular material such as seeds can be performed efficiently.

In Claim 2, the said feeding recessed part was arrange | positioned at equal intervals in the outer peripheral part of the said feeding roll, and it controlled so that the circular arc length between the said feeding recessed parts might be more than twice the circular arc length of a feeding recessed part. Thus, the spotting accuracy is improved and the spotting interval can be made constant.

In Claim 3, by rounding or chamfering at least one of the opposing cross-sectional corners of the feeding recess, the particles such as seeds can be scraped off and in and out smoothly in the feeding recess.

According to claim 4 , windshield means is provided at the lower part of the feeding device, and the windshield means has a main body or a surface made of a member having good slipperiness and water repellency, so that the influence of wind on the seeds and mud are reduced. It is possible to prevent variation in the interval of dropping of granular materials such as seeds due to the seeds.

  Next, embodiments of the invention will be described.

  FIG. 1 is an overall side view showing the overall configuration of a fertilizer seeding machine equipped with a feeding device according to the present invention, FIG. 2 is a partial side view showing the feeding device according to the present invention, and FIG. 4 and 4 are sectional side views of the feeding roll according to the present invention.

  FIG. 5 is a perspective view from the right rear side of a flooded spot direct sowing machine equipped with a windshield part according to the present invention, FIG. 6 is a perspective view from the same rear side, and FIG. 7 is a view from the lower part of the feeding device of the flooded spot sowing machine. FIG. 8 is a sectional side view of the feeding device provided with the windshield portion according to the present invention, FIG. 9 is a sectional side view of the feeding device provided with the windshield portion with the rear end opened, and FIG. 10 is the rear end portion. FIG. 11 is a sectional side view of a conventional feeding device.

  As an example of the feeding device according to the present invention, an example of a roll-type feeding device mounted on a fertilizer seeder is shown. However, the present invention can be applied to a fertilizer applicator, a seeder, a chemical spreader, and the like, and is not particularly limited as long as it includes a feeding device.

  The overall configuration of the fertilizer seeder 1 according to the present invention will be described with reference to FIG. In the following description, the direction of the arrow A in FIG. The fertilizer seeding machine 1 has a mounting frame 35 provided at the front upper part attached to a tool bar provided at the rear part of a traveling vehicle such as a tractor, and can be adjusted in position from side to side. A sowing frame 36 is fixed to the rear portion of the mounting frame 35, a fertilizer feeding device 6 is fixed to the rear portion of the sowing frame 36, and a sowing feeding device 7 is fixed to the rear portion of the feeding device 6. The hoppers 4 and 5 are detachably provided on the upper portions of the feeding devices 6 and 7, respectively. A guide funnel 8 is disposed at the lower part of the feeding device 6, and a guide pipe 10 is communicated with the lower end of the guide funnel 8. The guide pipe 10 is curved in front of and in front of the side surface in FIG. 1, and the lower end thereof is positioned on the substantially front side surface side of the rotating shaft of the groove forming disk 19. On the other hand, a guide funnel 9 is disposed at the lower part of the feeding device 7, and a conduit 12 is communicated with the lower end of the guide funnel 9. The lower end of the conduit 12 is inserted into the guide pipe 11. The guide pipe 11 is fixed to the roller frame 17, and the lower end of the guide pipe 11 is inserted between the grooving disks 19 and 19 (hereinafter referred to as the sowing frame 36, the hoppers 4 and 5, the feeding devices 6 and 7, the guide funnel 8). (9) The parts connected and fixed to the rear part of the tractor such as the guide pipe 10 and the conduit 12 are collectively referred to as “connecting part 2”).

  A support frame 13 is suspended below the front surface of the mounting frame 35, parallel links 15 and 16 are pivotally supported by pivot shafts 31 and 32 at the lower portion of the support frame 13, and the guide is provided at the lower end. A support rod 37 for fixing the lower end of the pipe 10 is fixed. The other ends of the parallel links 15 and 16 extend rearward and are pivotally supported by pivot shafts 33 and 34 at the front portion of the roller frame 17. A support rod 18 is fixed to the front end of the roller frame 17, and a groove forming disk 19 is pivotally supported at the lower end thereof so as to be rotatable in a V shape in plan view. Then, a soil covering disk 21 is attached to the rear part of the groove forming disk 19 at the lower end of the arm 20 projecting obliquely downward from the roller frame 17, and the front end of the roller arm 22 is rotatable in the middle of the front and rear of the roller frame 17. And a pressure-reducing roller 23 is mounted on the rear part of the roller arm 22 (rotating of the parallel links 15 and 16 such as the grooving disk 19, the soil covering disk 21, the pressure-reducing roller 23, and the roller frame 17). The parts following the unevenness of the field are collectively referred to as “grounding part 3”).

  A biasing arm 14 projects rearward from the rear surface of the mounting frame 35, and a support rod 39 is provided between the biasing arm 14 and the roller frame 17 and externally fitted with compression springs 24 and 38 serving as biasing members. It is disguised. The lower end of the support rod 39 is pivotally supported by the fulcrum shaft 25, and the upper portion is supported by the fulcrum shaft 26 so as to be slidable and rotatable. In this way, the grounding portion 3 is pressed against the field with a substantially constant pressure, and is urged while following the unevenness of the field.

  In such a configuration, when the hopper 4 is filled with powdered fertilizer and the hopper 5 is filled with seed 60 which is an example of a granular body, and the fertilizer seeder 1 is attached to the rear of the tractor and the tractor is advanced, A disk 19 forms a V-shaped groove in the field, and the feeding devices 6 and 7 are driven by a drive mechanism (not shown) to be formed in the field from the hopper 4 through the feeding device 6, the guide funnel 8, and the guide pipe 10. Fertilizer is dropped at a position away from the groove by a predetermined distance. On the other hand, the seed 60 is dropped from the hopper 5 through the feeding device 7, the guide funnel 9, the conduit 12, and the guide pipe 11 into the groove, covered with the soil covering disk 21, and pressed by the soil covering roller 23.

  Next, the configuration of the feeding device will be described with reference to FIGS. Since the feeding devices 6 and 7 have substantially the same configuration, the seed feeding device 7 will be described. The feeding device 7 includes a feeding case 40, a feeding roll 41, a feeding drive shaft 42, and a brush portion 43. The feeding case 40 opens upward and downward, communicates the lower part of the hopper 5 to the upper part, and the funnel 9 to the lower part. Communication connection is established. A feeding drive shaft 42 penetrates the feeding case 40 in the horizontal direction in the horizontal direction in the vertical center of the feeding case 40, a feeding roll 41 is fitted on the feeding driving shaft 42, and the feeding roll 41 is accommodated in the feeding case 40. Yes.

  On the outer peripheral surface of the feeding roll 41, feeding recesses 41a, 41a,... (Four places in the present embodiment) are formed. Further, the brush portion 43 is inserted from the rear surface of the feeding case 40 toward the center of the feeding roll 41, and the tip of the brush portion 43 is disposed so as to contact the outer peripheral surface of the feeding roll 41. And the guide part 50 is arrange | positioned so that the lower part of the feed roll 41 may be covered from the lower part of the brush part 43. FIG.

  In such a configuration, when the feeding roll 41 is rotated in the direction of the arrow by the rotational drive of the feeding drive shaft 42, the seed 60 filled in the hopper 5 is fitted into the feeding recess 41a and rotated in this fitted state. The excess seed 60 that cannot be fitted into the feeding recess 41a is removed by the brush portion 43, and only the seed 60 that is fitted into the feeding recess 41a is conveyed downward. And when it passes the brush part 43 and the guide part 50, it will fall naturally by the dead weight of the seed 60, will fall on the funnel 9, and will fall to the field scene via the conduit | pipe 12 and the guide pipe 11. FIG.

  Next, the features of the feeding device 7 according to the present invention will be described in detail.

  As shown in FIG. 3, a plurality of feeding recesses 41 a are formed at regular intervals on the outer peripheral portion of the feeding roll 41 (four in this embodiment), and the feeding roll 41 is rotated to rotate the feeding roll 41. When the concave portion 41a rotates from the position facing the upper granular material storage space toward the lower granular material discharge space, the seed 60 entering the stored concave portion 41a is conveyed downward and fed out. It is composed.

  The feeding roll 41 has a substantially cylindrical shape, and an axial center portion of the feeding roll 41 is mounted on the feeding drive shaft 42, and is rotatably supported by the feeding case 40 so as to be detachable. Further, the brush portion 43 is fixed to the feeding case 40 and is disposed so as to abut on the outer peripheral surface of the feeding roll 41 that is in a substantially horizontal position with respect to the feeding drive shaft 42. A guide portion that covers from the lower portion of the brush portion 43 to the vicinity of the lowest position of the feeding roll 41 so as to have a guide function for storing the seed 60 in the feeding recess 41a and stably transporting the seed 60 to the dropping position below the feeding roll 41. 50 are arranged. The guide portion 50 includes a low friction layer 51 that is in sliding contact with the feeding roll 41, and an intermediate buffer layer 52 made of a foam is provided at a lower portion thereof, and a base portion 53 having rigidity to support them. It is made up of. In this way, the seed 60 in the hopper 5 enters the feeding recess 41a of the feeding roll 41 from the open part of the upper portion, and when the feeding roll 41 rotates, the surplus portion 44 cannot first enter the feeding recess 41a. The seed 60 is removed by the brush 43 and the surface is leveled so that the seed 60 is housed cleanly in the feeding recess 41a. Only the seed 60 in the feeding recess 41a is conveyed downward and falls onto the funnel 9, 12. It is fed out to the farm scene through the guide pipe 11.

  In such a configuration, first, since the guide portion 50 is always in contact with the feeding roll 41, the low friction layer 51 is formed on the guide portion 50 in contact with the surface of the feeding roll 41 and in the vicinity thereof in order to prevent surface wear of the feeding roll 41. It is a surface layer formed of a provided resin having lubricity. This not only prevents the surface wear of the feeding roll 41 but also prevents the seed 60 from resisting even when the seed 60 is bitten between the feeding roll 41 and the low friction layer 51 without the seed 60 entering the feeding recess 41a. The feeding roll 41 can rotate smoothly without becoming. In this embodiment, ultra-high molecular weight polyethylene (trade name: Neurite, etc.) is used as the material of the low friction layer 51. However, the material is not limited to this, and other slippery materials such as tetrafluoroethylene (Teflon) are used. (Registered trademark)) or the like.

  In the present invention, an intermediate buffer layer 52 is provided below the low friction layer 51. Since the intermediate buffer layer 52 is made of a foam (sponge-like material) which is an example of an elastic body, the seed 60 can be conveyed without generating an excessive gap between the feeding roll 41 and the guide portion 50 as much as possible. Is made possible. The thickness of the intermediate buffer layer 52 may be considered in accordance with the size of the granular material to be transported, but is preferably equal to or slightly larger than the diameter of the granular material in view of transportability and buffering effect. For example, it is preferable to have a thickness of about 1 to 2 times the size of the granular material. In this embodiment, a polyurethane resin foam is used as the material of the intermediate buffer layer 52, but the material is not limited to this as long as it is elastic. In addition, since the base portion 53 having rigidity that does not elastically deform to support the intermediate buffer layer 52 is provided, the intermediate buffer layer 52 deformed so as not to generate an unnecessary gap when the seed 60 is bitten. It functions as a base part so as to stably support and maintain a certain shape. In this embodiment, vinyl chloride resin (PVC) is used as a member of the base portion 53, but the present invention is not limited to this, and any other resin or metal may be used as long as the material has rigidity that does not elastically deform. . With the above configuration, it is possible to suppress seeding variation more than a conventional feeding device provided with a guide plate 55 as shown in FIG. 11, and to feed a constant amount at a constant interval.

  That is, the hopper 5 that accommodates the seeds 60 that are granular, the feeding roll 41 that is rotatably provided near the lower opening of the hopper 5 and that has the feeding recess 41a on the outer peripheral portion, and the drop position below the feeding roll 41 In the feeding device 7 provided with a guide portion 50 that guides the seed 60, which is a granular material, from falling from the feeding recess 41a by covering the outer periphery of the feeding roll 41 until the guide roll 50 is provided, The feeding roll 41 is constituted by the low friction layer 51 slidably in contact with the outer peripheral portion, the intermediate buffer layer 52 capable of elastic deformation, and the base portion 53 having rigidity that does not elastically deform even when stress is generated during feeding. The seed 60 can be prevented from dropping from the feeding recess 41a when the seed 60 is caught between the guide portion 50 and the guide portion 50. Therefore, the spotting accuracy is improved as compared with the conventional case, and the spotting interval can be made constant.

  Further, in the brush portion 43, a scraping portion 44 that comes into contact with the outer peripheral portion of the feeding roll 41 is provided on the upper portion of the brush portion 43, and the scraping portion 44 is wear-resistant with respect to the outer peripheral portion of the feeding roll 41. It consists of a member with.

  In such a configuration, the tip of the scraping portion 44 is in contact with the feeding roll 41 in order to increase the scraping effect. Therefore, in order to prevent the feeding roll 41 from being worn, it is composed of a hard member having wear resistance. As the hard member, hard rubber having a rubber hardness of about 7 to 10 is used in the present embodiment, but the hard member is not limited to this, and any hard member may be used as long as it does not get caught when the feeding roll 41 is rotated. A material other than hard rubber may be used as long as it has a certain degree of elasticity and can withstand abrasion. Further, as the hard rubber, natural rubber, synthetic rubber or the like may be appropriately selected according to the use situation. For example, in the case where only the brush portion 43 is provided without the scraping portion 44 in order to scrape off the excess seed 60 that does not fit into the feeding recess 41a, the intermediate buffer layer 52 is made of a soft member such as foam. Therefore, biting or the like is likely to occur depending on the seed 60. In order to deal with such a case, in the present invention, a scraping portion 44 made of a hard member is provided on the upper portion of the brush portion 43. With the above configuration, the scraping performance with respect to the feeding roll 41 can be further improved as compared with the conventional scraping using only a brush, and therefore the filling of the seed 60 into the feeding recess 41a can be performed efficiently.

  That is, at the upper part of the brush portion 43, a scraping portion 44 that comes into contact with the outer peripheral portion of the feeding roll 41 is provided, and the scraping portion 44 is constituted by a member that is wear resistant to the outer peripheral portion of the feeding roll 41. As a result, it is possible to reduce the biting of the granular material when the intermediate buffer layer 52 is provided. Moreover, since the scraping performance with respect to the supply roll 41 can be improved as compared with the case using only the conventional brush, the filling recess 41a of the seed 60, which is an example of the granular material, can be efficiently performed.

  Next, the feeding recess 41a provided on the outer peripheral surface of the feeding roll 41 will be described with reference to FIGS. In the present invention, as shown in FIG. 3, at least one of the opposing cross-sectional corners of the feeding recess 41a is rounded or chamfered. In this embodiment, when the feeding roll 41 is rotated, the corner portion that first contacts the scraping portion 44 is an acute angle, and the other corner portion is rounded.

  In such a configuration, first, the cornering portion that first contacts the chafing portion 44 is made an acute angle, so that the chafing performance of the seed 60 is enhanced. Further, by rounding the other cross-sectional corner, it is possible to prevent the seed 60 from being sandwiched between the scraped portion 44 and the cross-sectional corner, and to prevent the seed 60 from cracking. In consideration of the conveyance of the seed 60, when chamfering the cross-sectional corner portion, it is preferable to have an inclined portion within 30 ° from the outer peripheral tangent of the feeding roll 41. Further, it is preferable to round the corners after chamfering. Moreover, when rounding a cross-sectional corner | angular part, it is preferable that the curvature radius R is smaller than the depth of a feeding recessed part.

  That is, by rounding or chamfering at least one of the opposing cross-sectional corners of the feeding recess 41a, the seed 60, which is an example of a granular body, can be scraped off and in and out smoothly in the feeding recess 41a.

  As shown in FIG. 4, in the present invention, the feeding recesses 41a are arranged at equal intervals on the outer periphery of the feeding roll 41, and the arc length between the feeding recesses 41a is equal to the arc length of the feeding recess 41a. It is regulated to be approximately twice or more.

  In such a configuration, if the arc length of the feeding recess 41a is La and the arc length between the feeding recesses 41a is Lb as shown in FIG. 4, the arc length Lb between the feeding recesses 41a is equal to the arc length La of the feeding recess 41a. If it is shorter than twice, it becomes too short than the expected spot sowing interval, resulting in an approximately strip sowing state. Further, in the conventional feeding roll 41 as shown in FIG. 11, since the spacing between the feeding recesses 41a is narrow, a gap is generated between the guide plate 55 and the feeding roll 41 when the seed is bitten, and the seed 60 is spilled off. The percentage of In view of these, it has been found that it is preferable to dispose the feeding recess 41a on the outer peripheral surface of the feeding roll 41 under the condition of Lb ≧ 2La in order to perform accurate spotting so as to make the spotting interval constant.

  That is, the feeding recesses 41a are arranged at equal intervals on the outer periphery of the feeding roll 41, and the arc length between the feeding recesses 41a is regulated to be approximately twice or more the arc length of the feeding recess 41a. As a result, the spotting accuracy is improved and the spotting interval can be made constant.

  That is, by configuring as described above, when the feeding roll 41 is rotated in the direction of the arrow by the rotational drive of the feeding drive shaft 42, the seed 60 filled in the hopper 5 is fitted into the feeding recess 41a and is fitted. The seed 60 is first scraped along the outer peripheral surface of the feeding roll 41 by the scraping portion 44 fixed to the upper portion of the brush portion 43, and the excess seed 60 that cannot be fitted into the feeding recess 41a is removed. . Next, the surface of the seed 60 fitted in the feeding recess 41a is acclimatized by the brush portion 43 so that the seed 60 fits in the feeding recess 41a more uniformly. Also in the conveyance of the seed 60 by the rotation of the feeding roll 41, the low friction layer 51 is provided to encourage the seed 60 to flow smoothly without being caught during the conveyance. In addition, by providing the intermediate buffer layer 52 that can be elastically deformed, when the seed 60 is transported, the guide portion 50 maintains a shape that is in close contact with the feeding roll 41 and fills the gap. Even if it is bitten, no extra gap is generated, so that the seed 60 in the middle of conveyance is not dropped from the feeding recess 41a. Further, by configuring the shape of the feeding recess 41a as described above, the seed 60 is less bitten or broken, and the seed 60 is filled more smoothly into the feeding recess 41a. Thus, only the seed 60 fitted in the feeding recess 41a is conveyed downward. And if it passes the guide part 50, it will fall naturally by the dead weight of the seed 60 in the intended time, and will be drawn out to a farm scene. In this way, according to the present invention, the seed 60 can be stably conveyed, so that there is less variation in sowing, and the seeding accuracy can be improved by dropping a substantially constant amount of seeds at regular intervals. .

  In the present embodiment, the example of the feeding roll 41 having the groove-shaped feeding recess 41a as the feeding recess 41a has been shown, but the present invention can also be applied to a slide roll type feeding device in which the capacity of the feeding recess 41a can be changed. Is possible.

  Further, in this embodiment, an example in which the feeding device of the present invention is mounted on a towing type fertilizer seeder is shown, but other types of seeder, fixed seeder, etc., all types of seeders, fertilizer seeders, etc. Can be installed.

  Next, the example which provided the windshield part 70 in the lower part of the feeding apparatus which concerns on this invention is demonstrated using FIG. 5 thru | or FIG.

  FIG. 5 is a direct seeding seeding machine equipped with a feeding device 7 similar to that in the first embodiment. As shown in FIG. 5, the flooded point direct sowing machine includes a feeding device 7, and a windshield portion 70 is disposed below the feeding device 7 as shown in FIGS. 5, 6, and 8. The cross-sectional shape of the windshield portion 70 is a cylindrical shape, and is arranged so as not to contact the farm scene. Further, the surface portion of the main body of the windshield portion 70 is configured using tetrafluoroethylene (Teflon (registered trademark)) having high slipperiness and water repellency.

  By comprising in this way, the influence of a wind is excluded and the lower part of the feeding case 40 shown in FIG. 7, the peripheral part of the feeding roll 41, the seeds which fall to a farm field, etc. are prevented from attachment of a wind or a water | moisture content. It becomes possible. In particular, it is effective in preventing mud splashing when the grounding wheel 71 in front of the vehicle body is splashed and when the float 72 is turned up and down when turning. Further, by adding the windshield portion 70 to the lower part of the feeding device 7, the distance between the lower end opening of the windshield portion 70 from which the seed 60 is fed and the field scene is reduced, and the wind-affected range is reduced, so that the spot seeding position accuracy is reduced. Improved. In other words, by providing the windshield portion 70, it is possible to prevent seeds 60 from being dispersed by preventing moisture and mud from adhering, thereby increasing the sowing accuracy. In the present embodiment, the windshield portion 70 has a cylindrical shape as shown in FIGS. 5 and 6, but the cross-sectional shape of the windshield portion 70 is U-shaped as shown in FIGS. 9 and 10. That is, the rear end portion may be partially open. Further, the windshield portion 70 may be made of a transparent synthetic resin or the like, and the surface of the windshield portion 70 may be made of a member having good slipperiness and water repellency so that the falling state of the seed 60 can be confirmed. Further, in this embodiment, an example of a windshield means having a windshield function is shown, but if it has a windshield function, it is a bent pipe that is a guide pipe for seeds and the like used in conventional fertilizer seeding machines. You may use as a windshield means the pipe comprised by the possible soft member, the elastic bellows, etc. As shown in FIG. When a guide pipe composed of a soft member or bellows as described above is used as a windshield means, the position of the lower end of the pipe can be adjusted freely because it is extendable and bendable. Thereby, since the space | interval of a guide pipe lower end part and a farm field can also be set suitably according to a condition, it becomes possible to exhibit the function as a windshield means to the maximum. In this embodiment, the surface of the windshield portion 70 body is coated with tetrafluoroethylene (Teflon (registered trademark)) in order to improve the moisture and mud adhesion prevention effect. You may comprise with a resin material with good water repellency. Furthermore, you may comprise the windshield part 70 main body itself only with a resin material with good slipperiness and water repellency.

  That is, by providing a windshield portion 70 which is a windshield means at the lower part of the feeding device 7 and the body or surface of the windshield means is made of a member having good slipperiness and water repellency, It is possible to prevent variation in the interval of dropping of granular materials such as seeds 60 due to mud splashing.

  In addition, in the windshield part 70 of a present Example, although the seed delivery apparatus which drops a fixed quantity at fixed intervals was demonstrated, it is applicable also to a fertilizer delivery apparatus, a chemical | medical agent delivery apparatus, etc. In the present embodiment, the roll-type feeding device has been described. However, the roll-type feeding device can also be arranged below the feeding device such as a pan-type or belt-type feeding device.

The whole side view which showed the whole structure of the fertilizer seeding machine equipped with the feeding apparatus which concerns on this invention. The partial side view which showed the feeding apparatus which concerns on this invention. Similarly sectional side view. The cross-sectional side view of the supply roll which concerns on this invention. The perspective view from the diagonally right back of the flooded point direct sowing machine provided with the windshield according to the present invention. The perspective view from the back similarly. The perspective view seen from the feeding apparatus lower part of the flooded point direct seeding machine. The cross-sectional side view of the feeding apparatus provided with the windshield part which concerns on this invention. The cross-sectional side view of the feeding apparatus provided with the windshield part by which the rear-end part was open | released. The perspective view of the windshield part by which the rear-end part was open | released. Sectional side view of the conventional feeding apparatus.

4 · 5 hopper 6 · 7 feeding device 41 feeding roll 41a feeding recess 42 feeding drive shaft 43 brush portion 44 scraping portion 50 guide portion 51 low friction layer 52 intermediate buffer layer 53 base portion 60 seed 70 windshield portion

Claims (4)

A hopper that accommodates the granular material, a feeding roll that is rotatably provided in the vicinity of the lower opening of the hopper and has a feeding recess on the outer peripheral portion, and the granular material by covering the outer periphery of the feeding roll to the drop position below the feeding roll In the feeding device provided with a guide part that guides so as not to fall from the feeding recess, the guide part is slidably in contact with the outer peripheral part of the feeding roll, an intermediate buffer layer capable of elastic deformation, A base portion having rigidity that does not elastically deform even when stress is generated during feeding , a brush portion is provided between the guide portion from the vicinity of the lower opening of the hopper, and the tip of the brush portion is an outer peripheral portion of the feeding roll The brush portion is provided with a scraping portion that contacts the outer peripheral portion of the feeding roll, and the scraping portion is wear-resistant against the outer peripheral portion of the feeding roll. Feeding device characterized in that is constituted by members with. 2. The feeding device according to claim 1, wherein the feeding recesses are arranged at equal intervals on an outer peripheral portion of the feeding roll, and an arc length between the feeding recesses is approximately twice or more than an arc length of the feeding recess. A feeding device characterized by being provided in the above. 3. The feeding device according to claim 1, wherein at least one of the opposing cross-sectional corners of the feeding recess is rounded or chamfered. The feeding device according to any one of claims 1 to 3, wherein a windshield means is provided at a lower portion of the feeding device, and a main body or a surface of the windshield means is configured by a member having good slipperiness and water repellency. A feeding device characterized by the above.

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