JP2015142538A - Soil covering device of seeder - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a seeder of a seeding machine in which a soil-covering amount of seeds sown in a farm field is stabilized, and a soil-covering plate can be easily removed when the soil-covering work is not necessary.SOLUTION: In a seeding machine, a seeder 2 and a ground-leveling float 3 are mounted at the rear part of a vehicle body 1, and seeds delivered from a seeding hopper 4 of the seeder 2 are guided to a furrowing part formed by a furrowing device 5 of the float 3. The machine is provided with an operation tool capable of switching the position of a soil-covering plate 6 for covering a seeding furrow formed by the furrowing device 5 of the float 3 with soil between a soil-covering posture position A and a storage posture position B that does not cover the soil. A vertically swingable and rotatable float shaft 8 of the float 3 is provided at the lower position of a seeding frame 9 in a lateral direction, and the rear end part of the soil-covering plate 6 is positioned below the float shaft 8.

Description

  The present invention makes it possible to easily switch between a soil covering state and a non-soil covering state of a covering plate for a sowing groove for seeding a crop seed.

  A technique to form a sowing groove while leveling the soil surface with a float, and to provide a cover plate in the sowing groove portion immediately after sowing in the sowing groove, and to cover the seed in the sowing groove portion by the soil surface scraping action of this covering soil plate (See, for example, Bar, Patent Distribution 1).

JP 2012-161280 A

However, depending on the state of the field, there is a problem that seeds cannot be buried with sufficient soil unless the amount of soil covering is changed, so that germination is delayed and seeds are eaten by birds and beasts.
Moreover, although it may be unnecessary depending on the type of sowing work, the state of the field, and the like, there is a problem that the labor required for switching the work state increases because a plurality of man-hours are required to remove the cover plate.

  This case makes it a subject to solve said problem.

  According to the first aspect of the present invention, a seeding device (2) is provided at the rear portion of the traveling vehicle body (1), a ground leveling float (3) is provided in the seeding device (2), and a seeding hopper of the seeding device (2) is provided. In the sowing machine which guides the seeds fed out from 4 to the groove forming portion formed by the groove forming device (5) provided in the float (3), the sowing groove formed by the groove forming device (5) of the float (3) A soil covering device for a seeding machine is provided with an operation tool for switching the covering plate (6) covering the soil to the soil covering posture position (A) and the storage posture position (B) not covering the soil.

  By running the soil surface of the seeder, the soil surface is leveled at the bottom of the float (3), and the grooving device (5) forms a grooving portion on the leveled soil surface. A seeding action by the seeding device (2) is performed in the groove part.

  When the soil covering action by the soil covering plate (6) is performed on the surface of the seeding groove after seeding, the operating tool (7) is operated to set the soil covering plate (6) to the soil covering posture position A. The earth covering plate (6) approaches the side surface of the sowing groove and rakes the soil surface to an appropriate depth inside the sowing groove to cover the soil.

  Further, when the soil covering action is not performed, the seeding work is performed by switching the soil covering plate (6) at the soil covering posture position (A) to the storage posture position (B) by operating the operation tool (7). Make it. At this time, the cover plate (6) in the storage posture position (B) is located at a position where the soil surface on the side of the sowing groove is not raked or is located at a position where the rake action is weak, and therefore has a soil covering action. It is a state that does not.

  The operating tool (7) for switching between the covering position (A) and the storing position (B) of the covering plate (6) is provided near the driver's seat of the vehicle body (1) and the seeding device (2). Although it arrange | positions near, when an operator releases a hand from the holding | grip operation position of an operation tool (7), it is comprised in the form which maintains the switching position of this operation tool (7).

  The cover plate (6) is provided with a spring on one side of the switching operation, and the cover plate (6) is moved to the cover position position (A) or the storage position position (B) by the elastic force of the spring. It can be.

Covering soil is usually used during normal sowing operations, but in the sowing form using seeds in which the surface of the seed is coated with a calper agent, the covering soil may be unnecessary.
According to a second aspect of the present invention, a float shaft (8) that pivots up and down of the float (3) is provided laterally at a lower position of the sowing frame (9), and the cover plate (6) The soil covering device for a seeder according to claim 1, wherein a rear end portion is provided below the float shaft (8).

  When working on the vehicle body (1), the bottom and bottom surfaces of the floats (3) slide and level on the soil surface, and the flat soil surface has a predetermined width and depth by the grooving device (5). Groove part is formed. The float (3) is rotated up and down around the rear float shaft (8), and is swung up and down by a sliding resistance between the front surface and the soil surface. Regardless of the change, a groove having a constant depth is formed while suppressing and leveling in a substantially constant state, and the sowing action by the sowing apparatus (2) is performed.

  The sowing groove portion where the sowing has been performed is covered with a cover plate (6) located on the lower side of the float shaft (8). The rear end portion of the cover plate (6) is located on the lower side of the float shaft (8), and the cover soil is scraped and determined as the cover soil position. Even if the float (3) is swung up and down, The gap and step between the float (3) and the rear end portion of the cover plate (6) with respect to the vertical swing position are formed small, so that the cover layer can be maintained at a constant thickness.

  The invention according to claim 3 is a pair of left and right cover plates (6A, 6) that scrape the soil toward the groove forming side with respect to the left and right sides of the groove forming portion formed by the groove forming device (5). 6B), and the left and right covering plates (6A, 6B) are provided so as to be able to change and adjust the swaying rocking angle of the soil, and the soil covering device of the seeder according to claim 1 or 2, To do.

  As described above, seeding by the seeding device (2) is performed on the groove (5) formed by the float (3) and the groove forming device (5) at the bottom of the float (3). The soil covering plate (6A, 6B) that scrapes toward the sowing groove side is disposed in the part, and the soil covering action is performed from the left and right sides of the sowing groove, and scraping by the left and right covering plates (6A, 6B). The bar and the soil covering layer are joined at a substantially central position of the sowing groove width if the soil covering amount or the soil covering width is substantially equal.

In addition, the amount of soil covering and the soil covering width are biased to either the left or right side, and the joining positions of the bar and the right and left soil covering layers are easily formed on the same biased position side.
In addition, the cover plates (6A, 6B) provided on the left and right sides of the sowing groove can be set to have different scraping angles and scraping rocking angles for scraping the soil. It is possible to deal with conditions and the like.

Thus, by changing the scraping angle of the left and right cover plates (6A, 6B), the amount of cover by the cover plates (6A, 6B) and the cover width range can be set differently.
The invention according to claim 4 is characterized in that the soil covering plates (6A, 6B) arranged on the left and right sides of the groove forming portion have different soil approaching depths with respect to the soil surface. The soil covering device of the seeder.

  Set so that the depth of the soil covering between the soil covering plates (6A, 6B) arranged on the left and right sides of the seeding groove portion is different from each other, and is high in any one of the soil covering plates (6A) When scraping the soil into the sowing groove, the other side cover plate (6B) is scraped at a position lower than this, so that the soil at the lower position is scraped into the sowing groove, The amount of soil covering can be balanced by the soil covering plates (6A, 6B), and accurate and smooth soil covering can be performed.

  Moreover, when the space | interval of the adjacent back part side of a covering board (6A, 6B) is narrow, the soil scraping joint by the approaching (6A, 6B) is canceled, and the scraping by each covering board (6A, 6B) is carried out. An even soil covering layer can be formed while accurately maintaining the amount taken.

  According to the fifth aspect of the present invention, the groover (5) is detachably attached to the rear end of the float (3), and the rear end of each groover (5) has an upper end ( 10) The sowing hose (11) was faced to guide sowing, and the sowing chamber (14) was opened with the lower end (12) opened to the soil surface and the rear side (13) opened backward. The soil covering device for a seeder according to any one of claims 1 to 4, characterized in that:

  The groovers (5) disposed on the left and right sides of each float (3) are detachably provided at the rear end of the float (3). Seeding work is performed with the groove (5) removed from the float (3).

  In addition, when the soaking device (5) is attached to the rear end portion of the float (3) and the sowing operation is performed, sowing is made in the upper end opening (10) of the sowing chamber (14) of the soaking device (5). Let the hose (11) face.

  The seeds fed out from the sowing device (2) via the sowing hose (11) are supplied to the sowing chamber (14) of the groover (5), and the soil formed by the groover (5) is formed. It is dropped and sown in the groove part of the surface. The seeds sown on the soil surface on the bottom surface of the grooving slidably contacting the lower end mouth (12) of the sowing chamber (14) are guided rearward from the rear mouth (13) by the forward movement of the grooving device (5). Thus, a soil covering action by the soil covering plate (6) is performed on the upper side of the seed sown at the rear side position of the rear side mouth (13).

  The invention according to claim 6 is a block form in which the groover (5A, 5B) or the covering earth plate (6A, 6B) arranged on the left and right sides of the float (3) is connected by a connecting bar (15). And a soil covering device for a seeding machine according to any one of claims 1 to 5, wherein the soiling device is detachable on a rear portion of the float (3).

  When forming a groove for seeding at the time of sowing, attach the groove generator (5) to the left and right sides of the float (3). Moreover, when covering the seeding groove part formed with this groove making machine (5), this seeding board (6) is attached and seeding work is carried out. These groovers (5), cover plates (6), and the like are mounted on the left and right sides of the connecting bar (15) in the horizontal direction, and the connecting bar (15) is mounted on the rear part of the float (3). Thus, the left and right groove producing device (5) and the earth covering plate (6) can be attached and detached as a block configuration for maintenance and the like.

  According to the first aspect of the present invention, when the operator switches the operation tool (7), the covering plate (6) is moved to the covering position (A) to cover the sowing groove, The plate (6) can be switched to the storage posture position (B) to maintain the seeding state without the covering, and the covering plate (6) is always in the float (3) regardless of the presence or absence of the covering operation. It is possible to select and switch easily and easily by simply switching the position position of the cover plate (6) to the cover position position (A) or the storage position position (B) in the state of being mounted. Since it can, workability | operativity can be improved.

  Moreover, a storage chamber is formed in the bottom part or the rear end of the float (3), and the covering position (A) of the covering plate (6) is obtained by inserting and removing the covering plate (6) into and out of the storage chamber. When the storage posture position (B) is switched, the contact action of the storage posture position (B) with respect to the soil surface of the cover plate (6) is reduced and the cover plate (6) is switched accurately and smoothly. Operation can be performed.

  In the invention according to claim 2, in addition to the effect of the invention according to claim 1, the rear end portions of the respective covering boards (6) are positioned on both the left and right sides of the float shaft (8) of each float (3). As a result, it is possible to reduce the height difference and level difference between the position immediately below the float shaft (8) of each float (3) and the rear position of the cover plate (6), and to cultivate the cover plate (6). A lower edge is made to act on the fixed height position of the soil surface of both sides of a sowing groove, and a stable soil covering can be performed by making the sowing groove part into a fixed layer.

  In addition to the first system descent described in claim 1 or 2, the invention described in claim 3 is provided on the side toward the seeding groove at the center by the cover plates (6 </ b> A, 6 </ b> B) disposed on the left and right sides of the seeding groove. The soil is covered by reducing the amount of soil by each cover plate (6A, 6B), so that the soil is scraped by the cover plate (6A, 6B). Even if there is soil, cover the soil so that the amount of soil covering is balanced, and even if it is biased to one side of the sowing groove width, no covering soil missing portion is generated, so that the entire sowing groove width becomes a uniform layer. Can do.

  In addition, the soil scraping angle by the left and right soil covering plates (6A, 6B) can be reduced, so that the soil covering efficiency can be increased, and the groove formation by the grooving device (5) can be made shallower or the side of the sowing groove. This is effective when there is little soil for covering soil, and the generation of uncovered soil portion can be reduced.

  In addition to the effect of the invention described in claim 3, the invention described in claim 4 scrapes the soil surface between the adjacent sowing grooves on the left and right, and rakes it to each outer sowing groove to cover the soil, Since the depth of the soil cover increase area on the soil surface by each of these cover plates (6A, 6B) is made different, the amount of scraped soil by each cover plate (6A, 6B) can be sufficiently maintained, and accurate soil covering can be achieved. Can be done.

  In addition to the effect of the invention according to any one of claims 1 to 4, the groove producing device (5) is a form in which a seeding chamber (14) at the rear end is formed. Since the rear end portion of the float (3) is detachably attached, the configuration is simple, and attachment / detachment operations, maintenance work, and the like can be performed easily and easily.

  The seeds fed into the sowing chamber (14) from the sowing hose (11) facing the upper end (10) are sown on the soil surface guided to the lower end (12) at the bottom, and this sowing position Is guided to the rear port (13), and the inflow of mud from the outer part into the sowing chamber (14) is prevented, so that the seeding state is disturbed, or the seeds are seeded by mud adhesion (14). Therefore, it is possible to prevent seeding clogging from adhering to the inner wall of the seedling, the mouth of the sowing hose (11), and the like, thereby improving the efficiency of sowing work.

  In addition to the effect of the invention described in any one of claims 1 to 5, the invention described in claim 6 includes groove generators (5) on both the left and right sides arranged at the rear part of the float (3), Since the connecting bar (15) to which the earth covering plate (6) and the like are attached is attached to and detached from the rear part of the float (3), each grooving device (5), each earth covering plate (6) and the like are attached. When it is possible to simplify and simplify the attachment and detachment operations and maintenance compared to the separate attachment and detachment modes, and when no grooving or soil covering is required, each of these implements (5), earthenware (6), etc. Thus, the seeding operation can be performed with the connection bar (15) removed, and workability can be improved.

Side view of seeder Plan view of the float part Rear view of the float part Side view of float part showing another embodiment Plan view of float part showing another embodiment BB line cross-sectional view of the float part Plan view showing an embodiment of a groove producing device The side view of a groove device. The top view of the float part which shows the decomposition | disassembly state of another Example Side view of float part showing disassembled state Rear view of float part showing disassembled state Perspective view of rotation control part of earth covering plate Side view of the soft / soft sensor

  Based on the drawings, the seeding machine has a seeding device 2 connected to the rear part of the vehicle body 1 in the regular four-wheel drive mode. The vehicle body 1 has a front wheel 20 and a rear wheel 21 arranged on both left and right sides, an engine 22 and a driver's seat 23 arranged at the upper center, and a steering handle 25 for steering the front wheels 20 on a front steering post 24. Place.

  Under the floor 26, a hydraulic continuously variable transmission 27 that transmits a belt from the engine 22, a transmission case 28, and the like are disposed, and a front wheel is mounted on the outer lower portion of the front axle housing 29 that projects from the left and right sides of the transmission case 28. A steering case for mounting 20 is mounted, and the steering wheel 25 can be linked to the steering.

  Further, the travel interlocking shaft 30 and the PTO shaft 31 are taken out from the transmission case 28, the travel interlocking shaft 30 is interlocked with the input shaft of the rear axle housing 33 with the rear wheel 21 shaft 32, and the PTO shaft 31 is In this embodiment, the fertilizer 35 on the rear frame 34 at the rear end of the vehicle body 1 and the sowing device 2 connected rearward are interlocked.

  The seeding device 2 has a plurality of floats 3 (side floats 3S on the left and right sides of the center center float 3C) at the bottom, supports the seeding frame 9 on the upper side, and suppresses the pressure while sliding on the soil surface. Level out. On the sowing frame 9, the sowing hopper 4, the feeding device 36 for feeding seeds of the sowing hopper 4, and the sowing for guiding sowing of the seeds fed from the feeding device 36 to the soil surface leveled by each float 3. The blower 37 duct 38 that blows air to the sowing and transport path parts such as the hose 11 and each sowing hose 11 part is disposed and sowed in multiple lines.

  Each of the floats 3 is provided with a grooving device 5 that forms a leveling portion for leveling the soil surface on both the left and right sides, and deeply forms grooves on one side edge or the center of the leveling portion. A groover attaching portion 19 is formed on the flat portion 16 of each float 3, and the groover 5 (see FIG. 8) is attached to the lower side of the attaching portion 19 by bolting or the like.

  In the form in which the sowing line by the sowing apparatus 2 is formed on each of the left and right sides of the float 3, the sowing groove is formed on each flat part 16 on both sides of the float 3, but the fertilization work is performed simultaneously with the sowing work. In the form to be performed, this fertilization groove can be formed simultaneously with the sowing groove adjacent to the seeding groove.

  In the example of FIG. 2, the position value of the grooving device 5 mounting portion 19 is configured so as to perform groove formation for each of the two right and left strips for each leveling portion 16, so that the sowing groove and the fertilization groove can be formed simultaneously. It is configured as follows. The mounting portion 19 of the groove producing device 5 in the flat portion 16 on the front side of the notch groove portion 18 has the mounting portion 19 on the sowing groove forming side at the front side toward the inside and the mounting portion 19 on the fertilizing groove forming side at the rear side. As a value, they are arranged at an appropriate interval in the left-right and front-rear directions. In this embodiment, the notch groove portion 18 that forms the inner attachment portion 5 is formed deeply to the front side.

  In this way, for each float 3, a sowing groove part and a fertilization groove part are formed in every two left and right and a total of four grooving parts. It is a multi-row sowing form that forms a groove.

  The seeding hose 11 and the feeding device 2 to be seen on the groove forming portion by each groove forming device 5 are arranged in the same number facing the upper side for each groove forming device 5. A soil cultivator 39 that can be moved up and down is provided at the rear part of each float 3 spacing portion, and a soil grooving groove is formed at every appropriate number of sowing groove intervals by lowering the soil culturing device 39 and pushing it down to the soil surface. Thus, each sowing groove part and sowing soil surface part are formed in a ridge width shape so as to maintain drainage.

  The fertilizer 35 is a feeding device 41 that feeds fertilizer from an upper fertilizer hopper 40, and flows down and guides the fertilizer fed from the feeding device 41, so that it is in the vicinity of the sowing groove formed by each float 3 on the rear side. A fertilizer hose for fertilizing the soil surface is arranged.

  Further, the lift link 42 for connecting the seeding device 2 is a parallel link mechanism, the front end is connected to the rear frame 34 so as to be pivotable up and down, and the rear end hitch link 43 is connected to the front end of the seeding frame 9. It is connected to the part so that it can be rolled. The lift link 42 can be moved up and down by expansion and contraction of a lift cylinder 44 on the vehicle body 1 side.

  A scraper rotor 45 is arranged on the front side of each float 3 of the seeding device 2 and is rotated by being taken out from the interlocking mechanism of the rear axle housing 33 via the rotor interlocking shaft 46. By the rotation of the scraper rotor 45, the soil surface leveled by the subsequent floats 3 is preliminarily ground and the leveling by the floats 3 is facilitated. As the seeding device 2 is moved up and down, the scraper rotor 45 is also connected to the front end portion of the seeding frame 9 via a connecting member 47 so as to be able to move up and down integrally.

  The support bracket 50 at the rear upper side position of the float 3 is pivotally mounted around a float shaft 8 in which the rear end portion of the seeding frame 9 is installed in the lateral direction, and the front upper portion of the float 3 is mounted. It is connected and supported to the front side portion of the sowing frame 9 by an expandable / contractible link 51, and the soil at the flat portion of the float 3 while swinging at an angle around the float axis 8 by changing the soil surface sliding resistance of the float 3. The surface can be suppressed and leveled.

  On the rear side of the leveling part of the float 3, a grooving device 5 is formed to form a grooving part on the leveled soil surface, and the soil surface is leveled and at the same time suitable for sowing with a width and depth. A groove is formed. A seeding guide 52 for receiving seeds flowing down from the sowing hose 11 and guiding the seeds into the groove forming part is provided on the rear side of the groove producing device 5.

  Here, the sowing and covering apparatus is equipped with a sowing device 2 and a leveling float 3 at the rear of the traveling vehicle body 1, and seeds fed from the sowing hopper 4 of the sowing device 2 are supplied to the grooving device of the float 3. In the sowing machine that guides sowing to the groove forming portion formed in 5, the covering plate 6 that covers the seeding groove formed by the groove forming device 5 of the float 3 includes the covering posture position A and the storage posture position B that does not cover the soil. And a switchable operating tool provided in the seeding machine.

  Further, a float shaft 8 that pivots up and down of the float 3 is provided in a lateral direction at a lower position of the seeding frame 9, and a rear end portion of the cover plate 6 is positioned below the float shaft 8 portion. Provide.

  Mainly based on FIG. 2 and FIG. 3, each float 3 forms a flat part 16 whose front half is wide in a warp-like shape, and the float body part 53 at the center in the lateral width direction is projected long backward, It is formed in a substantially T shape in plan view, and an outer piece 54 is formed on the outer side of the flat part 16 through a notch groove 18 formed between the float body 53 and the flat part 16. With the rear end portion of the notch groove portion 18 as the opening portion 17, a seeding action and fertilization are applied to the U-shaped notch groove portion 18 formed by the float body portion 53 at the center portion and the outer piece portion 54 at the outer side portion. Let it work.

  As described above, on the front side of the notch groove portion 18, the groove forming device 5 including the sowing groove portion and the fertilizer groove portion is formed by projecting from the lower surface of the flat portion 16 of the float 3. The cover plate 6 is disposed on the outer piece 54 formed on the outer side of the notch groove 18. On the lower surface side of the outer piece 54 of the float 3, the inner side surface portion is removed from the lower surface side to form a storage chamber 55 having a cross-sectional shape in a rear view, and the cover plate 6 is stored in this storage chamber 55 portion. Configure as you can.

  On the upper side of each float 3, a connecting bar 15 made of a pipe material is provided between the left and right outer pieces 54, and the boss portions 48 at both ends are fixed to the upper surface of the outer deformed portion 54, A cover shaft 57 that vertically penetrates the outer piece 54 formed on the upper side of the storage chamber 55 is inserted into the boss portion 48 so as to be movable up and down, and a cover shaft 57 for rotating the cover plate 6 is provided. The earth covering plate 6 is rotated around the shaft 57 to perform the earth covering action.

  The soil covering shaft 57 is provided so as to be slidable up and down against the tension force of the spring 56 provided at the upper end portion. The front end portion of the soil covering plate 6 is fixed to the lower end portion of the soil covering shaft 57 and the upper end portion is disposed at the upper end portion. A handle 58 that rotates the direction of the covering plate 6 is formed. The bottom surface of the soil covering plate 6 forms an inclined surface in the soil scraping direction so that the soil covering is easily scraped.

  When the cover plate 6 is turned by the handle 58 to the outer piece 54 side, the cover plate 6 is pulled up by the force of the spring 56, so that the cover plate 6 is moved to the storage posture position B in the storage chamber 55.

  Further, when the handle 58 is pushed down against the spring 56 and rotated toward the inner opening 17 side, the cover plate 6 pushed downward from the storage chamber 55 is rotated toward the inner notch groove 18 side. Thus, the tip of the earth covering plate 6 can be switched to the earth covering posture position A toward the opening 17 side.

  As shown in FIG. 4, the cover plate 6 attached to the rear end portion of the float 3 is set so that the front end portion in the cover cover posture position A is directly below the float shaft 8 portion of the float 3 that rotates up and down. Therefore, in the embodiment in which the covering soil 6 is switched to the left and right, the covering shaft 57 can be arranged in front of the float shaft 8 position. The float 3 pivots up and down around the float axis 8 to change the direction of the soil surface sliding. However, the vertical position of the rear end of the cover plate 6 has a small amount of change and a small height difference change. The soil covering operating position can be maintained substantially constant.

  In addition, a pair of left and right covering plates 6A and 6B that oppose the left and right sides of the groove forming portion formed by the groove forming device 5 and scrape the soil toward the groove forming portion are provided, or each covering plate 6A and 6B are provided so that the swaying rocking angle can be changed and adjusted.

Further, the covering plates 6A and 6B that are arranged on both the left and right sides of the groove forming portion and are opposed to each other are configured to have different soil scraping depths with respect to the soil surface.
5 and 6, the cover plate 6A that protrudes toward the outer opening 17 is formed on the float body 53 side of the float 3 in which the notch grooves 18 are formed on the left and right sides as described above. A cover plate 6B that protrudes inward and rearward is provided at the rear end of the piece 54, and the upper and lower sides of the seeding groove portion sowed in the notch groove portion 18 are covered by the cover plates 6A and 6B on both sides. Part of the soil surface is scraped and soil covering action is performed from the left and right sides of the sowing groove.

Each of the covering plates 6A and 6B is configured to be rotatable around the covering shaft 57, and can be rotated into the lateral width of the float body portion 53, and the protruding width toward the notch groove portion 18 can be adjusted.
Moreover, the height position of these left and right covering plates 6A and 6B and the width in the vertical direction can be changed to change the scraping height position of the covering soil or the amount of scraping soil. In FIG. 6, the scraping action position of the inner covering plate 6A is made shallow, and the scraping action position of the outer covering plate 6B is made deep so that the covering action is performed in a state where the left and right steps are formed. Moreover, the scraping area of the cover plate 6A is formed small, and the cover plate 6B side is formed wide.

The left and right covering plates 6A and 6B can be set or adjusted to have different protrusion inclination angles or swing inclination angles to the notch groove 18 side.
About the structure of the said groover 5, the groover 5 is attached to the rear-end part of the float 3 so that attachment or detachment is possible, and the seeding hose 11 is attached to the rear-end part of each groover 5 in 10 upper-end openings. The seeding chamber 14 is formed with the lower end port 12 opened to the soil surface and the rear side port 13 opened rearward.

  7 and 8, the groove forming device 5 provided in the lower surface of the flat portion 16 of the float 3, the notch groove portion 18 or the like is formed in a ship's shape, and a plane U-shape is formed at the rear end portion thereof. A seeding chamber 14 having a shape is formed. Guard pieces 59 having a form along the rearward extension surface of the side wall surface of the front side groove producing device 5 are formed on the left and right sides of the sowing chamber 14. By sliding and guiding backward, the flow of soil, mud, etc. into the seeding chamber 14 can be reduced.

  An engaging protrusion 60 that engages with the bottom surface of the float 3 is formed on the top surface of the groove forming device 5 to position the mounting position of the groove forming device 5, and a bolt insertion hole 61 is formed at the tip portion. It is formed and attached to the bottom of the float 3 by bolting.

  The connection between the groove forming machines 5A and 5B arranged on the left and right sides of the float 3 or between the cover plates 6A and 6B is attached to the left and right sides of the connection bar 15 as an integral block form. It is configured to be detachable on the rear part.

  Then, mainly based on FIGS. 9 to 11, the outer piece 54 in the form of FIG. 2 is made detachable from the flat part 16 of the float 3. On the rear side of the flat part 16 of the float 3, a front end portion of the outer piece 54 on which the groove forming device 5 for forming a fertilizer groove is formed is attached and connected by bolts 62, and the outer piece 54 is connected. And the float body 53 are formed with a notch groove 18.

  A cover plate 6 that can be rotated around a cover shaft 57 is provided at the rear end portion of the outer piece 54, and the cover plate 6 protrudes at an appropriate angle toward the opening 17, thereby providing a cover covering position A. It can be performed.

  The pair of left and right cover plates 6 have the cover shafts 6 attached to the boss portions 48 at the left and right ends of the connecting bar 15, and the intermediate portion of the connecting bar 15 is a bracket on the float body 53. By attaching it to 63 by bolting or the like, each cover plate 6 can be attached and detached.

  Further, the outer side pieces 54 on the left and right sides can also be attached and detached as an integral block configuration form with the cover plate 6. In this embodiment, the attachment portion of the connecting bar 15 to the float body portion 53 and the attachment portion of the front end portion of the outer piece 54 to the float flat portion 16 may be detachable by tightening bolts 62 or the like. it can.

  In this case, the left and right fertilizer grooves 5 can be attached and detached integrally by attaching them to the attachment portion 19. Further, the pair of left and right groove forming devices 5 and the cover plate 6 may be arranged at both ends of each of the different connecting bars 15 and attached to the upper surface of the float 3 to each connecting bar 15. .

  Next, mainly in FIGS. 12 and 13, in the form in which the covering plate 6 is rotated around the covering shaft 57 via the hardness sensor 66 for detecting the hardness of the sowing soil, there are a plurality of rotation positions of the hardness and softness. It is set as a certain structure, and it is set as the form which can raise the position of the covering board 6 by manual operation. When the earth covering shaft 57 is rotated via the cable 73, the earth covering plate 6 can be operated in the pulling direction by manual operation and automatic control by the soft / soft sensor 66. When this automatic covering cannot be performed sufficiently, it can be performed manually by operating the manual operation lever 74.

  The hardness / softness sensor 66 is configured so that the width of the rollers 69 and 70 is made wide and narrow in the form of detecting the softness of the soil surface of the field by the difference in the sinking amount of the rotors 69 and 70 at the tip ends of the sensor arms 67 and 68. I have to. Further, the spring 71 is hung on the sensor arm 67 on the narrow roller side, but the top soil for changing the tension of the spring 71 is changed by changing the position of the engagement hole 72 where the spring 71 is engaged. The sensor 66 may not function when the cover plate 6 does not move when the widths 69 and 70 are large or small. A spring 71 is applied to the arm 67 of the narrow roller 70 to change the load of the spring 71.

  The cover shaft 57 of the cover plate 6 is mounted on the boss 75 at the rear of the float 3, and the cable 73 is pushed and pulled by connecting the tip of the cable 73 to an arm 76 fixed to the upper end of the cover shaft 57. As a result, the cover plate 6 is rotated. A cover plate adjusting motor 77 controlled by the soft / soft sensor 66 is mounted on the seeding frame 9, and the cable of the gear shaft 80 is connected via a pinion gear 78 rotated by the motor 77 and a gear 79 meshing with the pinion gear 78. The arm 81 is rotated, and the cover plate 6 is rotated by automatic control via the cable 73.

  A manual operation lever 74 and a boss portion 82 at the base of the arm 81 are rotatably fitted on the gear shaft 80, and the arm 81 is moved by operating the shift lever 84 along the operation lever 74. By shifting to the gear 79 side, the gear 79 can be manually rotated via the plate arm 83 on the gear shaft 80.

DESCRIPTION OF SYMBOLS 1 Car body 2 Seeding apparatus 3 Float 4 Hopper 5 Groover 6 Covering board 7 Operation tool 8 Float shaft 9 Seeding frame 10 Upper end port 11 Seeding hose 12 Lower end port 13 Rear side port 14 Seeding chamber 15 Connecting bar 16 Flat part 17 Opening 18 Notch groove

Claims (6)

A seeding device (2) is provided at the rear part of the traveling vehicle body (1), a leveling float (3) is provided in the seeding device (2), and seeds fed out from a seeding hopper 4 of the seeding device (2) In the seeder that guides to the groove forming portion formed by the groove forming device (5) provided in (3),
There is provided an operation tool for switching the covering plate (6) covering the sowing groove formed by the groove grooving device (5) of the float (3) to a covering posture position (A) and a storage posture position (B) not covering the soil. A soil covering device for a seeder.   A float shaft (8) that pivots up and down of the float (3) is provided laterally at a lower position of the seeding frame (9), and a rear end portion of the cover plate (6) is disposed on the float shaft ( The soil covering device for a seeder according to claim 1, wherein the soil covering device is provided below 8).   A pair of left and right cover plates (6A, 6B) for scraping the soil toward the groove forming side are provided on the left and right sides of the groove forming portion formed by the groove forming device (5). 3. The soil covering device for a seeding machine according to claim 1, wherein the plates (6 </ b> A, 6 </ b> B) are provided so as to be capable of changing and adjusting a soil swaying rocking angle.   The soil covering device for a seeding machine according to claim 3, wherein the soil covering plates (6A, 6B) arranged on the left and right sides of the groove forming portion have different depths of soil with respect to the soil surface.   The groover (5) is detachably attached to the rear end of the float (3), and the rear end of each groover (5) is provided with a seeding hose (11) at the upper end (10). The seeding chamber is formed so that the seeding chamber (14) is formed with the lower end opening (12) opened to the soil surface and the rear side opening (13) opened rearward. The soil covering device for a seeder according to any one of the above.   Grooves (5A, 5B) or cover plates (6A, 6B) arranged on the left and right sides of the float (3) are connected by a connecting bar 15 to form a block, on the rear part of the float (3) The soil covering device for a seeder according to any one of claims 1 to 5, wherein the soil covering device is detachable.

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