JP2021078486A - Chinese yam harvesting device to be connected to tractor - Google Patents

Abstract

To solve the problem of a digging blade damage caused by rock and stones contained in a field, in a digger which has a digging chain arranged on both sides in the upper part of a cutting part of a conventional digging blade body, as the damage repair takes a long time and, particularly, interruption of a large scale field system has large economic loss.SOLUTION: The harvesting device of digging Chinese yam is connected to the rear part of a tractor, with a digging blade body plowed into the lower end of a grown Chinese yam to hold in a block shape together with the culture soil surrounding the Chinese yam and to dig it while raising toward the rear. In the front edge of a support bar on both sides supporting the digging blade body, there is installed a striation digging earth removal body. This striation digging earth removal body has arrangement of a bottom face plate having a curved face on a circular arc continued from the blade edge and, in an inner edge facing the digging center side of this bottom face plate, a division plate is erected, with an oblique blade installed in the front edge. Also, the oblique blade is installed in a manner slightly inclined rearward, with the edge provided with a relief angle facing the center. The Chinese yam harvesting device discharges the dug earth to the ground surface in the width of the striation digging earth removal body.SELECTED DRAWING: Figure 1

Description

In the present invention, the digging blade is connected to the rear part of the tractor, and the digging blade is plowed into the lower end of the grown long one. Gently digs without scratching the long thighs related to the harvester connected to the tractor.

Various long harvesting devices have been conventionally proposed. The grown long potatoes grow to a depth of about 1 meter toward the basement, and the harvesting work is hard work, and at the same time, the long thighs are easily broken and the surface skin is easily scratched. Then, the same application was made as a device that tried to dig a long thigh while plowing the digging blade into the lower end where the long one grew, holding it in a block shape with the cultivated soil around the long one, and floating it toward the rear. Japanese Patent Application Laid-Open No. 2014-212786 has been proposed.
The purpose is to reduce the traction resistance of the tractor by arranging an excavation chain in front of the plow member of the excavation configuration described above to form a deep plowing groove. It is a long plow harvesting device connected to a tractor, which is characterized in that excavation chains for excavating above both sides of the excavation blade are arranged close to each other in a long object excavation method in which the excavation blade is floated together and moved backward. The width of the blade of the digging blade is formed within the inner width of the excavation chain on both sides, and the latter half of the digging blade is wide so as to overlap the groove width of the excavation chain. ..
According to the configuration of the embodiment of Japanese Patent Application Laid-Open No. 2014-212786 described above, since the excavation chains for excavating both sides of the upper portion of the blade portion of the excavation blade are arranged, the propulsion resistance of the left and right plow-in members However, on the other hand, when rocks or stones are included in the field, the excavation blade may bite the stone and damage it, or the excavation chain may collide with the rock and be damaged, and it takes a long time to deal with it. Especially, the interruption of work in a large-scale field caused a great economic loss.
After that, Japanese Patent Application No. 2018-148003 (Patent Document 2) was filed on July 18, 2018 by the same applicant. According to this application technology, "the digging blade is connected to the rear part of the tractor, and the digging blade is plowed into the lower end of the grown long one, held in a block shape with the cultivated soil around the long one, and floated backward. However, in a harvesting device for digging long thighs, a narrow groove excavation excavation body is provided at the front edge of the support bars on both sides supporting the excavation blade, and the fine groove excavation excavation body is on a continuous arc from the cutting edge. A long plow harvesting device connected to a tractor, characterized in that the curved surface of the tractor rises and its upper end extends above the front edge of the support bar to discharge the excavated soil to the ground surface. "

Japanese Unexamined Patent Publication No. 2014-212786 Japanese Patent Application No. 2018-148003

According to the above-mentioned application technique of Japanese Patent Application No. 2018-148003, the narrow groove excavation excavation body having a curved surface of an arc continuous from the cutting edge by the fine groove excavation excavation body is the fine groove excavation on both sides of the excavation blade body. The soil is discharged to the surface of the ground to form an opening groove, and a U-shaped cultivated soil block is formed and floated backward for harvesting. Therefore, even if there are stones or rocks, there is no damage because the information is gently exchanged on the left and right. However, viscous soil and heavy clay try to escape to the left and right of the trench excavation excavation body. Therefore, the division and separation of both ends of the cultivated soil block that floats up by the digging blade is insufficient, and it adheres to the side surface of the support bar to increase the tractor's traction load, and when the long potatoes are pulled out, the soil is hard to loosen and it becomes hard work. Was there.

In order to solve the above-mentioned problems, the digging blade is connected to the rear part of the tractor, and the digging blade is plowed into the lower end of the grown long one. In a harvesting device that digs a long thigh while ascending, a narrow groove excavation excavation body is provided at the front edge of the support bars on both sides supporting the excavation blade, and this fine groove excavation excavation body is continuous from the cutting edge. A bottom plate having a curved surface on an arc is arranged, and a partition plate is erected at the inner end of the bottom plate toward the excavation center side, and an oblique blade is attached to the front edge to excavate a narrow groove. It is a long plow harvester that connects excavated soil with the width of the excavated body to a tractor that discharges it to the ground surface.
The slanted blade provided on the front edge of the partition plate is attached with a slight inclination to the rear, and the cutting edge is a long harvesting device connected to a tractor characterized by having a clearance angle toward the center of digging. ..

As described above, in the narrow groove excavation excavated body, a bottom plate having a curved surface on an arc continuous from the cutting edge is arranged, and a partition plate is erected at the inner end of the bottom plate and diagonally installed at the front edge. Since the structure is provided with a blade, a narrow groove opening with a reliable narrow groove excavation body width is formed and the cultivated soil block floats. Therefore, the slip resistance of the inner wall of the support bar was small, the cultivated soil block was loosened well, and it became easy to pull out long ones, and the harvested potatoes and scratches were reduced. In addition, the slanted blade provided on the front edge of the partition plate is attached with a slight inclination to the rear, and the cutting edge has a clearance angle toward the center, so it is cultivated even when the soil is highly viscous or when heavy clay is used. The machinability on both sides of the soil block is good and does not increase the traction resistance of the tractor.

Is a side view showing a working state in which the present invention is carried out. Is a plan view with some parts omitted Is a floating molding model of a cultivated soil block Is a front view of the formation of cultivated soil blocks Is an exploded view of the excavated excavated body Is a front perspective view of the excavated excavated body Is a plan sectional view of the narrow groove forming part Explanatory drawing of the fall auxiliary version Cleaner drive explanatory diagram

In the embodiment of the present invention, the excavated blade is connected to the rear part of the tractor, plowed into the lower end of the grown long one, held in a block shape together with the cultivated soil around the long one, and levitated toward the rear. However, in a harvesting device for digging long thighs, a narrow groove excavation excavation body is provided at the front edge of the support bars on both sides supporting the excavation blade, and this fine groove excavation excavation body is on a continuous arc from the cutting edge. A bottom plate with a curved surface is placed, and a partition plate is erected at the inner end of this bottom plate toward the excavation center side, and a slanted blade is attached to the front edge. It is a long plow harvester that connects to a tractor, which is characterized by discharging excavated soil of body width to the ground surface.
Further, the slanted blade provided on the front edge of the partition plate in the long harvesting device is attached with a slight inclination to the rear, and the cutting edge has a clearance angle toward the center of excavation.

In FIG. 1, reference numeral 1 denotes a rear portion of a four-wheeled passenger tractor. The front part of the machine frame 3 that supports the long digging device 23 is connected to the rear part of the tractor by a three-point link 2. Reference numeral 4 denotes a top bracket, which is rotatably supported with a support shaft 6 laid horizontally in front of the machine frame 3 as a fulcrum. A top link known to the tractor is connected to the front of the top bracket 4. Reference numeral 8 denotes a support bar having a vertically long cross section, which is attached to the left and right sides of the machine frame 3 so as to face downward. At the lower ends of the pair of support bars 8, a digging blade 9 inclined toward the rear is installed. The tip of the digging blade 9 is provided with a blade portion 10, and the drop assist plate 11 forming the rear end is vibrated by the second hydraulic motor 22.
Reference numeral 19 denotes a cleaner, which removes the upper surface portion of the cultivated soil block raised rearward by the digging blade 9 to the left and right to project a long neck. The cleaner 19 is driven by the first motor 18 in the direction of travel and swings left and right.
Reference numeral 24 denotes a hydraulic cylinder, the support shaft 6 is used as a fulcrum, and the posture of the digging blade body 9 supported by the machine frame body 3 is raised and lowered with respect to the top bracket 4 by expansion and contraction thereof. In particular, it is for securing the ground clearance of the digging blade in the ground.
Reference numeral 7 denotes a narrow groove excavation excavated body, which is arranged at the front edge of the pair of support bars 8 described above. The chisel 12 forming the tip of the narrow groove excavation excavation body 7 is arranged near the cutting edge of the excavation blade body 9, and a low surface plate having a curved surface on a continuous arc rises and the upper end thereof is the support bar 8. Excavated soil is discharged to the ground surface by extending above the front edge of the. A partition plate and an oblique blade 41 are provided at the inner end of the pair of narrow groove excavation excavation bodies 7. Reference numeral 31 is a long potato, and both sides of the excavation blade body are surely cut and separated by the oblique blade 41 of the narrow groove excavation excavation body of 7, and moved upward together with the cultivated soil block.
FIG. 2 is a plan view in which a part of the present invention is omitted, and FIG. 25 is a lower link, which is connected to both front sides of the machine frame 3. Reference numeral 5 denotes a PTO shaft provided at the rear of the tractor, which directly drives the hydraulic pump 16 and is transmitted to the hydraulic motor 18 by providing a hose of 17. The hydraulic pump 16 drives the first motor 18 and the second motor 22. The first motor 18 is connected to a means for swinging the cleaner of 19 from side to side. The second hydraulic motor 22 vibrates the drop assisting body 11 in the latter half of the digging blade body 9.
9 indicates a digging blade. Reference numeral 7 denotes a narrow groove excavation excavated body arranged on both sides of the excavation blade portion 10. Reference numeral 12 denotes a chisel forming the tip of the narrow groove excavation excavation body, which is arranged on both sides of the blade portion 10 of the excavation blade body described above. Reference numeral 42 denotes a partition plate provided at the inner end of the narrow groove excavation excavated body 7. The inclined latter half of the digging blade 9 is configured to be wide so as to overlap the groove width excavated by the narrow groove excavation excavation body 7. Reference numeral 20 denotes a horizontal axis, which is horizontally installed on the machine frame body 3. Reference numeral 21 denotes a pipe shaft that is slidable with respect to the horizontal shaft 20.

FIG. 3 shows a floating molding model diagram of the cultivated soil block 30. The lower ends of the support bar 8 having a vertically long cross section are fixed to both sides of the digging blade 9. The digging blade 9 is provided with a blade portion 10 at the tip thereof, the rear portion is inclined upward, and the rear end is connected to a drop assist plate 11 which is slightly vibrated. The narrow groove excavation excavated body of 7 is fixed to the front edge of the pair of left and right support bars 8. The narrow groove excavation excavation body 7 is arranged symmetrically, and the chisel 12 at the tip is arranged in the vicinity of the cutting edge of the excavation blade body 9. On the horizontal chisel 12, a low surface plate 13 having a curved surface on a continuous arc rises toward the rear, and is formed from an excavation surface of A, an activity surface of B, and a discharge surface of C. A partition plate 41 is erected at the inner end (excavation center side) of the low surface plate 13, and an oblique blade 40 is provided at the front edge thereof. The upper end of the discharge surface C extends above the front edge of the support bar 8 to discharge the excavated soil to the ground surface. In this embodiment, when the excavated part enters the soil and is propelled, the excavated body 9 bites into the lower part of the long one, and the diagonal blades 40 of the left and right narrow groove excavated bodies 7 are the left and right ends of the cultivated soil block 30. Is formed by cutting and floated. While the oblique blade 40 cuts through the soil, the partition plate 41 prevents the excavated soil from invading inward and guides it outward while discharging it upward. At this time, the discharge surface C discharges the excavated soil to the outside of the narrow groove, so that an opening groove is formed. 32 indicates a narrow groove opening of a trace of passage of the fine groove excavated soil removal body 7, and 30 indicates a cultivated soil block that rises with 31 for a long time. Reference numeral 15 denotes a mounting plate of the narrow groove excavator 7, which sandwiches both side surfaces of the support bar 8 and is fixed by bolts and nuts, and the height of the support bar 8 can be adjusted as desired. Further, according to this fixing means, it can be easily attached to a commercially available harvesting machine of the same type.
FIG. 4 shows a front view of the formation of the cultivated soil block. The narrow groove excavation excavation body 7 on both sides of the excavation blade 9 excavates the ground and cuts the soil together with the propulsion of the oblique blade of 41 to form the fine groove opening 32. At the same time, the blade portion 10 of the digging blade is plowed into the lower end of the growing object, and the cultivated soil block holding the long thigh 31 in the center is integrally formed in a U-shaped cross section. At this time, since the support bar 8 having a vertically long flat plate cross section propels the narrow groove opening (space), it is not subjected to the pressing frictional force of the excavated soil.
FIG. 5 shows an exploded view of the excavated excavated body of the narrow groove. Reference numeral 12 is a chisel for piercing and is located substantially horizontally. The back plate of 14 is formed in an arc shape behind the tip to fix the low surface plate 13 on a flat surface. A partition plate 42 is raised at the inner end of the low surface plate 13 having a curved surface on a continuous arc in a side view, and an oblique blade 41 is provided at the front end edge. 39 resin face plates are screwed to the upper surface of the low face plate 13. A resin plate 40 is attached to the outer wall of the partition plate 42 of the low surface plate 13. The resin plate and the resin face plate are intended to prevent soil from adhering and to have a slipping effect. The mounting plate 15 is fixed to the back plate 14 so as to sandwich it from the left and right. The mounting plate 15 is a fixing means for sandwiching the support bar 8 between the bolnuts. FIG. 6 shows a perspective view of a narrow groove excavation excavated body. A pair of left and right support bars 8 sandwich the digging blade 9. The narrow groove excavator 7 is symmetrically configured with respect to the support bar 8 at the center of the excavation blade 9, and is detachably fixed by the mounting plate of 15. When the narrow groove excavated soil excavated body 7 invades the soil, the excavated blade body 9 bites under the long one, the left and right chisels 12 invade, and the slanted blade 40 cuts and separates the central part from the cultivated soil. Block 30 is formed. The oblique blade 40 cuts through the soil, and the excavated soil on the excavated surface of A and the active surface of B is prevented from invading inward by the partition plate 41 and guided upward to the outside. Discharge. Since the excavated soil is discharged to the outside of the narrow groove on the discharge surface C, an opening groove is formed.
FIG. 7 shows a plan sectional view of the narrow groove forming portion. The 0-0 line in the center indicates the center line of the digging blade 9. The left and right narrow groove excavators 7 are composed of a bottom plate of 13 and a partition plate 42, and an oblique blade 41 is provided at the tip of the partition plate 22. The partition plate 42 is erected at the end of the bottom plate 13 on the excavation center side. Reference numeral 40 is a resin plate, and 39 is a resin face plate. The tip of the oblique blade 41 is bent inward (toward the center of the digging blade body) and has an escape angle G. The clearance angle G maintains machinability even when the field soil texture is clayey or heavy clay, and has a clearance width G with respect to the back surface of the partition plate 13. The relief width B prevents the side portion of the cultivated soil block from adhering to the side surface of the partition plate 13 or the support bar 8.
FIG. 8 shows a driving explanatory view of the drop assist plate, and reference numeral 11 denotes a rear surface of the drop assist plate. Reference numeral 22 denotes a second hydraulic motor, which is connected by 17 hoses conducted from the hydraulic pump 18 described above. The hydraulic motor described above is fixed to the stay of 27, and the rotation of the eccentric shaft 26 causes the drop assist plate 11 to vibrate up and down via the connecting rod 28.
FIG. 9 shows a driving explanatory view of the cleaner 19. The drive sprocket 29 attached to the output shaft of the first hydraulic motor 18 rotates the driven sprocket 34 which has been appropriately decelerated. The scraping rod 38 of the cleaner 19 is rotatably supported by the boss shaft 36 of the fulcrum shaft 37. The 38 scraping rod is swung left and right by the connecting rod 35 connected to the driven sprocket 34.

The long object digging device connected to the tractor according to the present invention does not increase the traction force of the tractor, has less damage to the excavated part even in a field mixed with stones and rocks, and is stable and continuous even in a highly clay-based field. You can harvest for a long time. In addition, the entire body is simple and lightweight, and it is economical because it requires less consumables even in the fields of large-scale professional farmers.

1 Rear part of tractor 2 3-point link 3 Machine frame body 4 Top bracket 5 PTO output shaft 6 Support shaft 7 Fine groove excavation excavation body 8 Support bar 9 Excavation blade body 10 Blade part 11 Drop auxiliary plate 12 Chisel 13 Metal face plate 14 Back plate 15 Mounting plate 16 Hydraulic pump 17 Hose 18 1st motor 19 Cleaner 20 Horizontal shaft 21 Pipe shaft 22 2nd motor 23 Long thigh digging device 24 Hydraulic cylinder 25 Lower link 26 Eccentric shaft 27 Stay 28 Connecting material 29 Drive sprocket 30 Cultivation Soil block 31 Long thigh 32 Fine groove opening 33 Rotating support shaft 34 Driven sprocket 35 Connecting rod 36 Boss shaft 37 Supporting shaft 38 Scraping rod 39 Resin face plate 40 Resin plate 41 Oblique blade 42 Partition plate H Fine groove excavation width G

Claims (2)

A harvest that connects to the rear of the tractor and plows the digging blade into the lower end of the grown long one, holds it in a block shape with the surrounding cultivated soil, and raises it backwards while digging out the long thigh. In the device, a narrow groove excavation excavation body is provided on the front edge of the support bar on both sides supporting the excavation blade, and this narrow groove excavation excavation body is a bottom plate having a curved surface on an arc continuous from the cutting edge. Is placed, a partition plate is erected at the inner end of this bottom plate toward the excavation center side, and an oblique blade is attached to the front edge. A long plow harvester that connects to a tractor characterized by discharging into The long thigh harvesting connected to the tractor according to claim 1, wherein the slanted blade provided on the front edge of the partition plate is attached with a slight inclination to the rear, and the cutting edge has a clearance angle toward the center of excavation. apparatus

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