JP2014233234A - Soil covering device of seeding machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a seeding machine in which a grooving depth and a soil covering width are interlocked and changed in conformity to hardness and softness of a field, and soil can be covered with the amount of earth and sand suitable for a seeding groove depth.SOLUTION: A seeding machine is liftably provided with a seeding unit 8 for feeding seeds accumulated in a seeding hopper 1 from a feeding unit 2 to a field at the rearward of a traveling vehicle body 9, is provided with a grooving unit 7 for forming the groove part with the seeds getting therein below the seeding unit 8, and is provided with a soil covering plate 6 for covering and burying soil in the groove part formed by the grooving unit 7. The seeding machine is configured such that the change of the soil covering width of the soil covering plate 6 and the change of a grooving depth of the grooving unit 7 can be interlocked and operated by a soil covering actuator 12, which operates to deepen the grooving depth of the grooving unit 7 by increasing a pressing force of the soil covering plate 6 on a hard soil surface, and to shallow the grooving depth of the grooving unit 7 by decreasing the pressing force of the soil covering plate 6 on a soft soil surface.

Description

  The present invention relates to a soil covering device for a seeding machine.The present invention relates to a relatively soft field scene, such as a paddy field, by ground leveling of a float, and sowing to the leveling field, sowing a field scene of a sowing mark. The soil is surely covered and stable sowing work is performed.

  A sowing device with a float is planted on a flattened field scene while the field scene is floated, and the field scene of the sowing site is covered with a cover plate, or the field scene between the left and right floats is covered. A technique (for example, refer to Patent Document 1) such as groove formation by a groove generator is known.

Unexamined-Japanese-Patent No. 2012-161280.

  If there is a change in hardness in the field, the amount of soil covering at the sowing line position is difficult to stabilize, the amount of soil covered by the cover plate is small in the hard field scene, and the amount of soil covered by the cover plate tends to increase in the difficult field scene. In addition, the soil covering action by this soil covering plate is easily affected by the grooving action by the grooving machine that cultivates the field scene of the float interval immediately after sowing, and the soil covering that stably maintains the accurate sowing state can be performed. difficult.

  According to the first aspect of the present invention, a seeding device 8 for feeding seeds stored in the sowing hopper 1 to the field from the feeding device 2 to the field is provided at the rear part of the traveling vehicle body 9 so that the seeds enter the lower part of the seeding device 8. In a seeding machine provided with a grooving device 7 for forming a groove portion, and provided with a cover plate 6 for covering the groove portion formed by the grooving device 7 with soil, the covering width change of the cover plate 6 and the groove forming device 7 A soil covering device for a seeding machine is characterized in that the groove depth change can be interlocked.

  In the invention according to claim 2, the interlocking relationship between the change of the covering width of the covering plate 6 and the change of the forming depth of the groove producing device 7 is made by increasing the pressing force of the covering plate 6 on a hard soil surface. It operates to increase the groove depth of the groove 7 and interlocks to reduce the groove depth of the groove groove 7 by weakening the pressing force of the cover plate 6 on the soft soil surface. A soil covering device for a seeder according to claim 1.

  The invention according to claim 3 is that the soil covering actuator 12 that changes the soil covering width of the soil covering plate 6, the interlocking of the soil covering width change of the soil covering plate 6 and the groove forming depth change of the groove producing device 7, The soil covering device for a seeding machine according to claim 1 or 2, wherein the groove producing device 7 is connected by a cable 13.

  The invention according to claim 4 is provided with a float 5 for leveling while sliding on a farm scene at positions facing the left and right sides of the groove producing device 7, and parallel to the front-rear direction along the opposite side surface of the float 5. 4. A soil covering device for a seeder according to claim 1, wherein a wave-breaking plate 14 having a shape is formed.

  The invention according to claim 5 is configured such that the upper end surface 15 of the groove forming device 7 provided in the float interval portion A is formed low in the vicinity of the bottom surface position of the float 5 or can be lowered to a low position. It is set as the soil covering apparatus of the seeder according to any one of claims 1 to 4.

  In the first aspect of the present invention, the earth covering plate 6 changes the earth covering width in accordance with the softness of the field scene, and the grooving device 7 moves up and down in conjunction with the change in the earth covering width. Since the working height suitable for the hardness of the canopy can be automatically maintained, the resistance by the grooving device 7 when the drainage and irrigation grooves are formed in the field scene of the sowing field is maintained to the necessary limit, and traveling The running resistance of the vehicle body 9 is reduced. Thereby, it is possible to perform seeding covering work with high efficiency and high accuracy.

In addition, by changing the covering width and changing the vertical movement position of the grooved device 7, the operability is improved and the work efficiency is improved.
And when the soil covering width is narrowed when the farm scene is soft, the grooving device 7 rises in conjunction with it, so that the grooving depth of the grooving device 7 is reduced and an excessive amount of soil is brought to the sowing mark. Therefore, it is possible to prevent the seeding depth from becoming excessively deep and the seeds from becoming difficult to germinate.

  Furthermore, if the coverage width is widened when the farm scene is hard, the grooving device 7 is moved downward and maintained so as to increase the grooving depth. It is easy to maintain the depth, and the groove part can be surely formed in the field scene. By forming the groove between the right and left sowing lines, it is easy to drain and irrigate and maintain the seed germination environment well. can do.

  In addition to the effect of the invention described in claim 1, the invention described in claim 2 changes the depth of the grooving device 7 in conjunction with the change in the soil covering width of the soil covering plate 6. It is possible to reduce the earth pushing on the sowing line.

  In particular, since the soil covering action by the soil covering plate 6 in a soft agricultural scene can be easily performed, the groove forming depth by the groove forming device 7 tends to be deep. For this reason, by narrowing the soil covering width by the soil covering plate 6, the amount of soil covering can be made appropriate, and it can be prevented that a large amount of soil is unnecessarily covered and the germination of seeds is reduced.

  In addition, in the grooving by the grooving device 7 in this soft field scene, the soil fluidity is high, so that the earth is pushed easily during grooving, but the grooving device 7 should reduce the grooving depth. Since it is rising, the pressing by this groove does not easily interfere with the field scene portion of the sowing line, the field scene of the sowing line and the soil covering state by the cover plate 6 are stabilized, and sowing accuracy is improved.

  In addition to the effect of the invention described in claim 1 or 2, the invention described in claim 3 performs the interlocking between the earth covering plate 6 and the groove producing device 7 via the cable 13 connected to the earth covering actuator 12. Because the interlocking structure becomes simple, it can be operated accurately, and the manual operation of moving the grooving device 7 up and down in accordance with the softness of the soil is omitted, resulting in a simple and accurate change adjustment mechanism, and the operability is improved. Highly improved.

In addition, work efficiency is improved and work performance is maintained high.
In addition to the effect of the invention described in any one of claims 1 to 3, the invention described in claim 4 is a sowing field scene that is leveled by the float 5 by the wave-breaking plate 14 provided on the side surface of the float 5. And by moving water or mud between the field part of the gap part that is laterally pushed by the front part of the float 5 and the float part A is guided rearward, Breaking, backfilling, and the like can be prevented, sowing seeds can be prevented from being deformed, and the deformation of the grooving portion and the like can be reduced, and sowing accuracy can be improved.

  In addition to any one of claims 1 to 4, the invention described in claim 5 is such that the upper surface of the groove producing device 7 that forms the farm scene of the float interval A is substantially the same as the bottom surface 16 of the float 5. Because of this position, even if a muddy water wave or the like is generated at the front side of the grooving device 7, this muddy water wave can flow to the rear side through the upper surface of the float 5, so that a strong muddy water flow can be applied to the side of the aircraft. It is prevented from being generated, and the grooves are prevented from being buried before sowing and the seeds sowed are prevented from being washed away before covering.

A side view of a seeder. The top view of the sowing apparatus part of a seeder. The expansion side view of the sowing apparatus part which shows a part another example. The top view of a part of seeding machine which shows a part another example. The expanded sectional side view of a seeding | feeding delivery part. The side view of a traveling vehicle body part. The side view which shows the opening / closing operation | movement of a seat frame part.

  Based on the drawings, the sowing machine has a plurality of sets of floats 5 (seeding) for smoothing and smoothing the field scene through a lift link 11 that is lifted and lowered by a lift cylinder 10 on the rear side of the vehicle body 9 in a riding four-wheel drive form. A center float 5c at the center in the width direction and side floats 5s on both the left and right sides are disposed), and a feeding device 2 for feeding seeds stored in the sowing hopper 1 is provided. A sowing device in a multi-row sowing configuration that is configured to sow seeds that are blown to the sowing cylinder 3 and the seeds that have been fed from the feeding device 2 to the sowing cylinder 3 in a flat field scene that is leveled by the respective floats 5. 2 are connected.

  Further, a fertilizer 34 is provided on the rear frame 21 connecting the lift link 11 at the rear part of the vehicle body 9, and the fertilizer stored in the fertilizer hopper 22 is guided by the fertilizer hose while being fed by the feeding device 23. It flows out to the flat part position trace of the float 5 of the apparatus 2 and fertilizes the field scene. Further, in front of each float 5, there is provided a scraping rotor 24 that scrapes and smoothes the field scene leveled by each of the floats 5 in advance.

  The tractor vehicle body 9 has an engine 25 at the center and a driver seat 26 mounted on the engine cover 19, and a steering handle 28 and a dashboard 42 that supports the handle 28 and the like are arranged at the front of the floor 27. Under the floor 27, a hydraulic continuously variable transmission 29 belt driven from the engine 25, a transmission case 30, and the like are provided, and the hydraulic continuously variable transmission 29 is operated to switch between forward and reverse, and to increase and decrease each speed. The main shift operation with the operation is performed.

  The transmission mechanism in the transmission case 30 has a sub-transmission gear, a clutch gear, etc., transmits the front wheel 31 shaft at the right side, transmits the interlocking shaft 33 to the rear wheel 32 shaft, and also applies the fertilizer application. A PTO shaft 35 and the like for transmitting the device 34, the seeding device 8, and the cutting rotor 24 are provided.

  The lift link 11 is in the form of a parallel link, and a hitch 39 that allows the connecting portion 38 of the seeding frame 4 of the seeding device 8 to be attached to and detached from the hitch link 36 at the rear end is rotatable around the rolling shaft 40. Link. The seeding frame 4 is provided with an attachment arm 41 of the scraper rotor 24 that can swing up and down via a link mechanism and that can be moved up and down by operating a lifting lever 60.

  The sowing apparatus 8 is in the form of a direct sowing machine for sowing seeds coated with a calper agent, and sows in a multi-strip form on a field scene with a working width of one traveling stroke. At the bottom of the seeding frame 4, a center float 5 c on the center side and side floats 5 s on both the left and right sides are arranged so as to swing up and down around a float shaft 43 provided laterally at the rear position. It is provided so that it can be pressed down and flattened while sliding through the field. Grooves 17 that form seeding grooves of appropriate depths are formed on the float bottom surface 16 of the flat portion 18 at the left and right side positions of each float 5, and the float 5 A seeding groove having a predetermined depth and width is formed in a field scene leveled on the bottom surface 16 of the slab.

  A groove cutter 48 for forming a fertilizer groove is formed at the rear position of the same flat portion 18 at the rear outer position of the groove cutter 17, and the rear portion of the groove cutter 48 is conveyed from the fertilizer 34. The fertilizer opening 45 for guiding the fertilizer to the fertilizer groove is observed.

  In addition, a soil covering plate 6 is provided at the rear end of each float 5, and the soil located at the outer end of the sowing groove of each float 5 is raked into the inside of the sowing groove so that the seeds in the sowing groove are removed. Cover the soil. The cover plate 6 is supported and attached to the rear portion of the sowing frame 4 or the rear portion of the float 5 by the cover plate shaft 37, and is rotated around the cover plate shaft 37 to move the front end portion of the cover plate 6. It is set to have an appropriate inclination angle with respect to the advancing direction in a plan view so that the rear end portion is directed to the seeding groove portion side and directed to the outside of the seeding groove portion. Form a cover plate surface with the width of the cover soil in the horizontal direction, scraping it toward the rear end side and the sowing groove side while advancing the field scene, or moving it so that it pushes, and from this rear end part, Cover the upper soil with soil.

  The inclination angle of the earth covering plate 6 around the earth covering plate shaft 37 is pivotally interlocked around the earth covering plate shaft 37 via the cable 46 and the expansion / contraction link mechanism 47 by the earth covering motor which is the earth covering actuator 12. It is seeded in the sowing groove formed by the grooving device 17 to cover the upper part of the sowing line. Moreover, this soil covering simultaneously also covers the upper side of the fertilization strip part of the fertilization groove part formed and fertilized adjacent to this seeding strip.

  In the rear part of the float spacing portion A between the floats 5, a grooving device 7 for forming a soil groove for irrigation and drainage of a predetermined depth and width between the right and left sowing grooves is provided on the sowing frame 4. Can be moved up and down. The grooving device 7 is configured to be rotatable up and down around the grooving shaft 56 via a lift link 49 in the form of a parallel link mechanism to change and adjust the grooving depth and height position of the grooving device 7. be able to.

  In order to operate the height of the groove forming device 7, a cable 13 is connected to the soil covering actuator 12 for operating the covering plate 6, and the cable 13 is pulled by the actuator 12 to form the groove. The vessel 7 can be raised and raised. Further, by loosening the pull of the cable 13, the cable 13 is biased so as to be lowered by a spring force, its own weight or the like. The operation mechanism for operating the soil covering actuator 12 can be provided in the control box 57 in the upper front part of the sowing frame 4 or in the operation panel portion on the side of the driver's seat 26.

  Here, a feeding device 2 for feeding seeds of the sowing hopper 1, a sowing frame 4 for mounting a sowing cylinder 3 etc. for guiding the fed seeds to the field scene, and a float 5 for sliding and leveling the field scene are arranged. A sowing plate 6 for scraping and covering the field scene of the sowing site from both left and right sides and a grooving device 7 for grooving the field scene of the float interval A between the left and right floats 5 is arranged. In a seeding machine in which the device 8 is connected to the rear part of the vehicle body 9 via a lift link 11 that can be moved up and down by expansion and contraction of a lift cylinder 10, the soil covering width change of the soil covering plate 6 and the groove forming depth of the groove forming device 7 It is set as the structure of the soil covering apparatus of the seeder characterized by enabling change operation and interlocking operation.

  As the vehicle body 9 moves forward, each float 5 of the seeding device 8 slides on the farm scene and is leveled. While the seeds in the sowing hopper 1 are fed into the sowing cylinder 3 by the feeding device 2, the seeds are sown in the field scene leveled by the float 5 (in the form of the sowing groove, this sowing groove). The seeds sown in this field scene are covered with the soil-carrying action of the covering plate 6 immediately after. Further, in the float space A between the left and right floats 5, a field scene of the float space A, which is guided to flow to the rear side in accordance with the smoothing action of the floats 5, is created by the groover 7. Grooving is performed to create a groove with a predetermined depth and width in the space between the right and left sowing lines.

  The covering soil board 6 is in the rear side position of the sowing groove forming position, and the front end portion of the covering soil board 6 is set to a state position opened to the outer position of the sowing groove section, and the rear end portion is brought closer to the sowing groove section side. In this way, it is configured to be inclined at an appropriate angle with respect to the front-rear traveling direction in plan view, and the field scene portion on the side of the sowing groove is moved to the upper portion of the sowing line of this sowing groove as the aircraft advances. It covers the soil while making it soar.

  Accordingly, if the inclination angle of the covering plate 6 with respect to the traveling direction is increased, the covering width of the covering plate 6 in the lateral direction or the covering width which is the covering action width is widened. The covered soil width becomes wider and the amount of covered soil can be increased. On the other hand, when the inclination angle of the cover plate 6 is reduced to approach the state parallel to the traveling direction, the cover width becomes narrow and the cover amount also decreases.

  When the soil quality of the field is hard, the soil covering width of the soil covering plate 6 is increased, and the operation is performed to maintain the necessary and sufficient amount of soil covering. At this time, the grooving device 7 is lowered simultaneously with the increase of the covering width of the covering plate 6 to increase the grooving depth. On the contrary, when the soil quality is soft, the covering width of the covering plate 6 is narrowed to maintain the necessary and sufficient covering amount. In addition, along with the change of the covering width of the covering plate 6, the groove forming device 7 is interlocked with descending or ascending, thereby increasing or decreasing the groove forming depth. As described above, since the change adjustment of the covering width of the covering plate 6 and the change adjustment of the groove forming depth of the groove forming device 7 are performed in conjunction with each other, it is easy to set the interlocking relationship position in advance. With a simple configuration and operation, the change switching operation can be performed quickly and accurately.

  In addition, the interlocking relationship between the change in the covering width of the cover plate 6 and the change in the groove depth of the grooving device 7 is set so that the pressing force of the covering plate 6 is increased in a hard field scene, It operates to increase the groove depth, and in a soft agricultural scene, the presser force of the cover plate 6 is weakened and the groove depth of the groove generator 7 is decreased.

When the farm field scene is in a soft state, the sowing operation is performed by reducing the pressing force of the cover plate 6 to the farm scene and increasing the shallow groove position of the grooving device 7 to make it shallower.
On the contrary, when the farm scene is in a hard state, the presser force of the covering board 6 to the farm scene is increased so that a sufficient amount of covering soil can be scraped, and the grooving device 7 is lowered. Then, the groove depth is increased so that a reliable groove can be formed.

  In order to change the pressing force of the covering plate 6 between large and small, in addition to switching the covering width to wide and narrow, a driving voltage for rotating the covering plate 6 that rakes up and covers the farm scene. In addition, there are means such as switching the driving oil pressure between large and small, and switching the rotation driving spring pressure between large and small. In addition, the rotation shaft 37 of the cover plate 6 that can be rotated in the left-right direction is inclined, and the outer field scene portion is pushed while pressing the field scene in an oblique direction from the upper outer side to the lower inner side. It can be configured to cover soil so as to scrape to the inner sowing section. In this embodiment, it is possible to change the scratching force or amount of the soil covering to some extent by changing and adjusting the inclination angle of the soil covering plate rotating shaft 37.

  Further, the interlocking between the change of the cover width of the cover plate 6 and the change of the groove depth of the groove plate 7 is performed by connecting the soil cover actuator 12 for changing the cover width of the cover plate 6 and the groove device 7 to each other. 13 is linked.

  The soil covering actuator 12 includes a controller that is electrically driven by a manual operation switch, an electric motor, a hydraulic motor, a geared motor, and the like. By driving these soil covering actuators 12, the cable 46, the link mechanism 47, and the like. Then, each cover plate 6 can be rotated around the cover plate shaft 37 in a predetermined angle range. In order to change the covering width or covering operation width of the covering plate 6 to be wide or narrow, the rotation amount or the rotation angle of the soil covering actuator 12 is switched between large and small by adjusting the electric volume. Can be done.

  The interlocking structure between the soil covering actuator 12 and the groove producing device 7 is connected by the cable 13 similar to the cable 46. The amount of operation of the soil covering actuator 12 is rotated in conjunction with the soil covering plate 6 via the cable 46, and the groove forming device 7 is rotated in conjunction with the predetermined groove forming depth via the cable 13. The soil covering width change and the groove forming depth change of the grooving device 7 are simultaneously performed in conjunction with each other. And in the operation | work in a hard field scene, if the soil covering working width of the soil covering board 6 is made wide, the groove making machine 7 will be lowered | hung and it will be interlocked so that the groove forming depth may be deepened. On the contrary, in the case of a soft field scene, when the cover width of the cover plate 6 is narrowed, the grooving device 7 is raised and interlocked so as to reduce the grooving depth.

Further, along the opposite side surfaces of the float 5 facing the left and right sides of the groover 7, a wave-proof plate 14 having a parallel shape in the front-rear direction is formed.
The field scene of the float interval part A at the time of sowing is driven by the grooving action by the grooving device 7 and part of the mud is pushed to the sowing groove position side where the leveling is leveled by the floats 5 on the left and right sides, Due to the mud mud extruding action by the float 5, some mud is easy to be pushed out to the groove forming side by the grooving device 7, and there is a wave preventing plate 14 along the side surface of the float 5. 14 can prevent the mud flow from extruding in the lateral direction, and can guide the farm scene of the float interval A and the flow of mud, mud water, etc. to gently escape immediately to the side. The sowing cover suitable for germination and growth can be eliminated by breaking the grooving soil surface formed by the vessel 7, deforming the sowing surface or sowing groove surface, etc. Can be carried out in an accurate and clean form, The work groove or the like can be efficiently formed.

Furthermore, the upper end surface 15 of the groove forming device 7 provided in the float gap portion is formed low in the vicinity of the bottom surface position of the float 5 or is configured to be lowered to a low position.
As described above, the field scene of the float interval A is formed into a relatively deep and wide shape by the grooving device 7 located in the float interval A. Since the field scene of this float space | interval part A has received the mud pushing action so that it may be pushed and formed by the float space | interval part A side by each float 5, it is rather than the sowing field scene part leveled by the float 5. In many cases, it is formed in a mud pile shape, and moreover, it is likely to be a form that is pushed up and piled up by grooving cultivating action by the grooving device 7 itself.

  Thus, when the farm scene of the float space | interval part A rises higher than the upper surface of the groove producing device 7, this raised mud overflows the upper end surface 15 of the groove producing device 7 in a low position and The grooving device 7 guided to the side is in a state of being submerged, and mud extrusion and mud flow wave propagation to the front side part, the sowing field position at the lateral side position, and the like can be reduced.

  The groover 7 is set such that the upper surface position of the groover 7 is located at the height of the bottom position of the float 5 as a height position with respect to the float 5 or is usually at a high position. Under the condition that the farming scene at the time of sowing the soft groover 7 is soft, the position of the groover 7 is lowered by the switching operation, and the upper surface of the groover 7 is positioned near the bottom surface height of the float 5. It can also be set as the form located in this.

  Next, mainly based on FIG. 3 to FIG. 5, the float spacing portion A located inside the outermost side float 5 s has a rear portion of the leveling portion 18 and a lower portion of the groove forming device 7. Moreover, the seeding device 8 including the floats 5 can be supported with a good left-right balance by a pair of left and right stands 50 that are detachably attached to the stand 50 and are disposed at positions closer to the left and right sides of the entire width of the seeding device 8. Each of the floats 5 forms a seeding groove addressed to Nijo, but a soil groove having an appropriate depth is formed in the float space A by a groover 7, and a flat shape having a predetermined width is formed between the right and left soil grooves. Of sowing seeds. A sowing basket that forms a two-row sowing width by one center float 5c and a sowing width for each two-row by the side float 5s arranged on the left and right outsides are formed to form a sowing seed in a six-row sowing form as a whole. .

  From the main frame 4 extending in the left-right width direction of the seeding device 8, a connecting portion 38 having a hitch 39 at the front center portion and an upper frame 61 for connecting the left and right end portions of the main frame 4 in a loop shape are provided. A seeding bracket 62 to which each seeding device 8, blower 20, etc. is attached is formed in the part, and the groover 7 is attached to a grooved bracket 63 protruding rearward, and a stand is provided below the groover 7. Position 50 and install.

  An upper portion of the main frame 4 is provided with a geared motor M serving as the soil covering actuator 12 and a fan-shaped gear 68 that is rotated around the arm shaft 54 thereby rotating the arm 55. By rotating 55, the grooving device 7 is vertically connected via the cable cable 13 connected thereto, and the arm 69 of the cover plate 6 is moved around the cover plate shaft 37 via the cable 46. It is interlocked so that it can rotate.

  The groover 7 is below the groove bracket 63, and can be turned up and down by the groover shaft 56 at the lower end of an arm 64 whose upper end rotates around the lever shaft 54. Are connected to each other by a rod 66 between the arm plate 65 projecting rearward from the arm 64 and the rear end portion of the lower groove forming device 7, and the height position of the groove forming device 7 is determined. The link mechanism 47 can be adjusted up and down. The arm plate 65 is provided with a plurality of pin holes 66 in the vertical direction. By changing the connecting position of the upper end of the rod 66 to the pin hole 67, the vertical movement of the groove generator 7 with respect to the arm plate 65 is achieved. The phase range can be changed and adjusted. The cable 13 is connected to the upper end portion of the arm plate 65 to interlock with the soil covering width adjustment of the soil covering plate 6.

  The stand 50 mounted at the float interval A is formed long in the front-rear direction, and has a form along the front-rear direction of the float interval A, and has casters 51 at the front and rear ends. A mounting shaft 52 is projected on the front and rear intermediate portion of the stand 50, and the upper end portion of the mounting shaft 52 is formed downward from the groove forming bracket 63 on the rear side of the main frame which is the sowing frame 4. The socket 53 is inserted from the lower side and can be detachably attached, and the entire seeding device 8 can be floated and supported on the floor surface by the stand 50 constructed in the float spacing portions A on both the left and right sides.

  Further, the stand 50 is mounted with a front-up slope, but when the seeding device 8 is lowered to the seeding work posture position by the lowering of the lift link 11, the front and rear casters 51 are grounded to the front and rear horizontal field scene. Thus, the entire seeding device 8 can be supported in a substantially horizontal state. Further, the mounting angle of the socket 53 with respect to the seeding frame 4 can be changed.

  In this embodiment, the socket 53 is provided so as to be rotatable around the lever shaft 54 in the lateral direction of the frame 4, and the support angle posture of the stand 50 is appropriately set according to the ground position or the like by the operation of rotating the lever 55 back and forth. Can be supported.

  The stand 50 on both the left and right sides can be connected to each other by a connecting frame or the like, but in the illustrated example, the mounting shaft 52 is inserted into the socket 53 so that it can be attached and detached separately. The support position can be stretched up and down, or a pin hole is formed between the fitting portions of the socket 53 and the mounting shaft 52. The shaft 52 can be attached and detached. The stand 50 attached to the float spacing portion A maintains a posture for supporting the seeding device 8 at a substantially fixed position, and hardly swings in the left and right directions. And since this stand 50 is located in the float space | interval part A located inside the outermost side float 5s, it does not protrude outside this side float 5s, or is not exposed.

  In the feeding device 2 part of the seeding device 8, a feeding roll 71 is disposed on a feeding roll shaft 72 in the horizontal direction inside the feeding case 70. The seeds fed from the sowing hopper 1 to the sowing cylinder 3 by the rotation of the feeding roll 71 are dropped and sown in a sowing groove formed by a grooving device 17 provided on the bottom surface 16 of the float 5. . At this time, the sowing guide cover 73 provided on the flat portion 18 of the float 5 has a fertilizer spout 45 of the fertilizer pipe 44 in the vicinity of the sowing tube 3, and the sowing formed by the same groove cutter 17. It is set as the form which makes the groove part also perform the fertilization effect | action by the fertilizer application apparatus 34. FIG.

  Next, in order to urge and cool the inside of the engine room covered with the engine cover 19 of the vehicle body 9 mainly based on FIGS. 6 and 7, a slit hole 81 is formed in the front portion of the engine cover 19 on the front lower side of the driver seat 26. , And the fan 82 disposed on the front side of the engine 25 is rotated to suck the outside air above the floor 27 from the slit hole 81 and flow backward in the engine room 80 to generate the engine generated by the engine 25. Heat is exhausted from the opening 83 formed in the rear side of the engine room 80 to the space between the left and right rear wheels 32.

  This fan 82 is driven by the belt 84 by driving the engine 25, but a radiator fan can be installed in place of the fan 82. The driver's driving environment can be favorably maintained by cooling the foot portion on the front side of the driver's seat 26, the engine cover 19 below the driver's seat 26, and the like at the top of the floor 27.

  The main frame constituting the vehicle body 9 includes a seat frame 85 formed inside the engine room 80 with a rubber mat 89 of an appropriate thickness interposed between the driver seat 26, the engine cover 19 and the like. 86, and the upper end portion of the engine room 80 can be opened and closed by rotating the rear end side up and down around the hinge 87 at the front end portion. The driver's seat 26 and the engine cover 18 with respect to the seat frame 85 are separately attached, and an appropriate gap K is formed between the engine cover 19, the floor 27, and the center floor 88 portion of the center portion. ing.

  The driver's seat 26 is attached to the upper portion of the seat frame 85 by an attachment bracket 90, and the engine cover 19 is detachably attached by tightening bolts 91. Further, a rear frame 93 that supports and attaches the rear floor 92 is integrally formed at the rear end portion of the seat frame 85, and can be rotated around the opening / closing hinge 87 integrally with the seat frame 85. The rear end of the can be opened widely. On the rear frame 93, when the fertilizer 34 is not mounted, a guard frame 94 surrounding the rear periphery can be attached.

DESCRIPTION OF SYMBOLS 1 Seeding hopper 2 Feeding device 3 Seeding cylinder 4 Seeding frame 5 Float 6 Covering plate 7 Grooving device 8 Seeding device 9 Car body 10 Lift cylinder 11 Lift link 12 Covering actuator 13 Cable 14 Wave breaker 15 Upper surface 16 Bottom surface A Float space

Claims (5)

A seeding device (8) for feeding seeds stored in the sowing hopper (1) to the field from the feeding device (2) is provided at the rear of the traveling vehicle body (9) so as to be movable up and down, and the seeds are placed below the sowing device (8). In a seeder provided with a groove forming device (7) for forming a groove portion to enter, and provided with a covering earth plate (6) for covering the groove portion formed by the groove forming device (7) with soil.
A soil covering device for a seeding machine, wherein the soil covering width change of the soil covering plate (6) and the groove forming depth change of the groove forming device (7) can be operated in conjunction.   The interlocking relationship between the change in the covering width of the cover plate (6) and the change in the groove depth of the grooved device (7), and on the hard soil surface, the presser force of the covered soil plate (6) is increased and the grooved device ( 7) Operates to deepen the groove depth, and on soft soil surfaces, the presser force of the cover plate (6) is weakened and interlocked to reduce the groove depth of the groove holder (7). The soil covering device for a seeder according to claim 1.   The interlocking of the change of the cover width of the cover plate (6) and the change of the groove depth of the grooving device (7), the cover actuator (12) for changing the cover width of the cover plate (6), The soil covering device for a seeder according to claim 1 or 2, characterized in that the groove device (7) is connected by a cable (13).   A float (5) for leveling the ground while sliding on a farm scene is provided at a position facing both the left and right sides of the grooving device (7), and the shape is parallel to the front and rear along the opposing side surface of the float (5). The soil covering device for a seeder according to any one of claims 1 to 3, wherein a corrugated plate (14) is formed.   The upper end surface (15) of the groove forming device (7) provided in the float interval portion (A) is formed low in the vicinity of the bottom surface position of the float (5), or can be lowered to a low position. The soil covering device for a seeder according to any one of claims 1 to 4.

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