JP2018110559A - V-groove direct seeder - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable surely seeding in V-shaped seedling grooves by making a lower end position of a guide pipe of a seeding device invariable to a change in a posture of a machine body of a V-groove direct seeder.SOLUTION: Regardless of a posture of a machine body 1 inclined to a side of a riding type tending machine B around a drive shaft 2 of a ditching wheel W of a V-groove direct seeder A, corresponding with sinkage of wheels M, Mof the riding type tending machine (traction vehicle) B, a guide pipe support rod E supporting a large number of guide pipes 24 is liftably supported on the machine body 1 via a pair of right and left support arms 36, in a state of being regulated in a lower end position to the machine body 1 by a pair of right and left tension springs (regulation member) Sso as to make a lower end position of the guide pipe 24 to a seeding groove V just after molding invariable. A rear warp plate Pb grounded always on a paddy field F during working is mounted on the guide pipe support rod E between the seeding grooves V adjacent to the guide pipe support rod E and in a state of being arranged below the guide pipe support rod E.SELECTED DRAWING: Figure 11

Description

  The present invention relates to a V-groove direct seeding machine for performing direct sowing of a V-groove in a soft rice field with a lot of moisture.

  V-groove direct sowing is, as shown in Patent Document 1, using a V-groove direct sowing machine in a flat rice field, (opening width × depth) = (2 × 5) cm After forming V-grooves with an isosceles triangular shape of a cross-section continuously on the rice field, rice seeds are dropped on the bottom of the V-grooves together with fertilizer as needed, and then seeded. It is a method of cultivating rice by directly seeding rice seeds (rice cake) without plowing a dry paddy field by dropping a small amount of soil on the bottom of the paddy and covering it.

  The direct sowing of the V-groove is preferably carried out in a dry paddy field where the paddy surface is tightened. However, there are various conditions that are unavoidable depending on the location of the paddy field. You may be forced to do this. In this soft rice field, when the wheel (especially the rear wheel) of the towing vehicle that pulls the V-groove direct sowing machine sinks, a concave portion due to the wheel mark is generated on the rice field, and when the position of the sowing groove matches the concave portion, The sowing groove cannot be formed. Moreover, since the hardness of soil changes with the water | moisture content etc. of a rice field, the amount of subsidence of the wheel of a tow truck changes at any time. Therefore, due to the use of a tow vehicle called a “ride riding machine” having a wheel whose wheel width (the width of the wheel itself, not the distance between the pair of left and right wheels) fits in the row of the sowing groove, Can be eliminated.

  In addition, the “passenger management machine” as a towing vehicle and the V-groove direct seeding machine are connected with each other so as to be rotatable around a rotation shaft, and the hydraulic pressure is released during work. In the side view, the position of the V-groove direct sowing machine with respect to the “passenger management machine” can be changed slightly, and when turning at the end of the sowing groove, the hydraulic pressure causes the V Turn in a state where the direct sowing machine is turned upward and lifted.

  When the V-groove direct seeding is performed in a soft rice field, the “riding management machine” having a wheel with a narrow wheel width described above has a small ground contact area with respect to the surface of the paddy field. Compared to the case, the rotation angle (rotation amount) of the V-groove direct seeding machine toward the front in the side view increases, and the posture of the V-groove direct seeding machine changes.

On the other hand, the seeding device constituting the V-groove direct seeder includes a guide pipe that mixes seeds and, if necessary, fertilizer and supplies the seeded groove to each seeding groove, and the lower end of the guide pipe is the rear part of the machine body. Since it is supported in a semi-fixed state by the guide pipe support rod fixed and supported horizontally, the posture in the side view of the V-groove direct seeder changes as described above in a soft rice field. Therefore, when the amount of subsidence of the wheels of the “passenger management machine” increases, the position of the guide pipe support rod from the surface increases and the position of the discharge opening at the lower end of the guide pipe changes. Since the distance L (see FIG. 10A) from the rotation axis of the machine body of the V-groove direct seeder (rotation axis C ₁ of the drive shaft 2 in the embodiment) to the discharge opening at the lower end of the guide pipe is long, V The distance of the vertical movement of the discharge opening at the lower end of the guide pipe with respect to the rotation angle of the machine body of the direct sowing machine is increased. The discharge opening at the lower end of the guide pipe is arranged so as to face the opening of the sowing groove, so that all seeds fall and be supplied to the sowing groove. When the position moves away from the opening of the sowing groove, some seeds are scattered outside the sowing groove, and all seeds are not supplied to the sowing groove, resulting in waste of seeds.

JP 2014-187933 A

  The present invention does not change the lower end position of the guide pipe of the seeding device with respect to changes in the attitude of the body of the V-groove direct seeder when the wheel of the towing vehicle sinks when the V-groove direct seeding is performed in a soft rice field with a lot of moisture. Thus, it is an object to ensure seeding in a V-shaped seeding groove.

In the invention of claim 1 for solving the above-mentioned problem, a drive shaft is supported by a machine body connected to a tow vehicle along a lateral direction perpendicular to the traveling direction of the machine body, and the drive shaft is spaced at a constant interval. A large number of grooved rings are supported, and the grooved ring is provided with a grooved protruding plate portion with a V-shaped cross section at the center in the width direction of the regulating rod ring body for depth regulation. And a grooving device for grooving a large number of sowing grooves on the rice field as the aircraft progresses,
From the various child and fertilizer hoppers that are horizontally supported along the lateral direction at the rear part of the machine body and are arranged corresponding to the arrangement positions of the grooved wheels of the grooved device in the machined body, A seeding device in which a lower end portion of each guide pipe for supplying seeds and, if necessary, fertilizer to each seeding groove immediately after grooving is supported by the guide pipe support rod,
The seed feeding shaft that penetrates the lower end of each child / fertilizer hopper is driven via a transmission mechanism by the driving rotational force of the ground drive wheel that is attached to the front part of the machine body and is urged and grounded to the surface by the urging means. A grounding-type power generator for driving
V-groove direct sowing machine equipped with
Corresponding to the sinking of the wheel of the towing vehicle, the lower end position of the guide pipe with respect to the sowing groove is not changed regardless of the attitude of the airframe tilting toward the towing vehicle about the drive shaft. Therefore, the guide pipe support rod is supported to be able to be moved up and down by the body through a pair of left and right support arms in a state where the descending end position with respect to the body is regulated by a regulating member, and is always landed on the surface during work. The rear sled plate that holds the arrangement position of the guide pipe support rod with respect to the paddy surface is between the adjacent sowing grooves in the guide pipe support rod, and is disposed below the guide pipe support rod. It is characterized by being attached to a guide pipe support rod.

  According to the first aspect of the present invention, when the wheel (especially the rear wheel) of the towing vehicle sinks because the rice field is soft, the body of the V-groove direct seeder connected to the towing vehicle is When the guide pipe support rod attached to the rear part of the aircraft is fixed to the aircraft by tilting slightly toward the towing vehicle around the rotation axis of the grooved wheel, Is slightly moved upward, and the discharge opening of the guide pipe semi-fixed to the guide pipe support rod is also slightly moved upward.

  However, in the first aspect of the present invention, the guide pipe support rod is supported by the body so as to be movable up and down via a pair of left and right support arms in a state where the descending end position with respect to the body is regulated by a regulating member. A rear sled plate that is always landed on the surface and holds the position of the guide pipe support rod relative to the surface is between the guide pipe support rods, between adjacent sowing grooves, and below the guide pipe support rods. Since the guide pipe support rod is mounted on the guide pipe support rod in an arranged state, the guide plate support rod is always placed at a fixed height position with respect to the fuselage by its own weight when the rear sled plate is in close contact with the field surface. Is done. As a result, regardless of the amount of subsidence of the wheel of the towing vehicle, in other words, regardless of the change in posture due to the slight tilting of the body of the V-groove direct seeder around the rotation axis of the grooved wheel, The height position of the guide pipe support ridge with respect to the rice field remains unchanged.

  As a result, the arrangement position of the discharge opening at the lower end of the guide pipe of the seeding device supported by the guide pipe support rod in a semi-fixed state is maintained at a fixed position regardless of the sinking amount of the wheel of the towing vehicle. Therefore, all seeds can be supplied to the sowing groove immediately after the formation without scattering some seeds to the periphery, and there is no waste of seeds.

  According to a second aspect of the present invention, in the first aspect of the invention, the restriction member is a pair of left and right tension springs that connect the left and right ends of the guide pipe support rod and a portion of the fuselage above the guide pipe support rod. It is characterized by being.

  According to the invention of claim 2, since the regulating member for regulating the descending end of the guide pipe support rod is composed of a pair of left and right tension springs, the V-groove direct seeder is lifted and swiveled at the seeding groove forming end. At this time, the guide pipe support rod descends by its own weight against the restoring force of the pair of tension springs, so that the guide pipe support rod descends smoothly without suddenly descending from the aircraft, and the amount of descending is the minimum amount necessary. Therefore, the position of the guide pipe relative to the guide pipe support rod does not shift even when used many times. In addition, the tension spring can regulate the lowermost position of the guide pipe support rod with respect to the machine body when the V-groove direct sowing machine is turned and swiveled at the seeding groove forming end. The force of lifting the guide pipe support rod upward by the elastic restoring force of the tension spring also acts to reduce the weight of the guide pipe support rod. By reducing the weight of the guide pipe support rod, the required number of rear sled plates is reduced, or when using a compression spring that biases the rear sled plate downward as in the invention of claim 3 described later, The spring constant of the compression spring can be reduced (a weak compression spring can be used).

  According to a third aspect of the present invention, in the first or second aspect of the invention, the rear sled plate is rotatably supported by a sled plate support rod attached to the guide pipe support rod, and the induction pipe support rod is supported by a compression spring. It is characterized by being biased downward.

  According to the invention of claim 3, the rear sled plate is rotatably supported by the sled plate support rod attached to the guide pipe support rod, and is urged downward with respect to the guide pipe support rod by the compression spring. In this state, the rear sled plate is sowing in contact with the rice field. Therefore, the rear sled plate is rotated in response to the change in the attitude of the V-groove direct seeder with the vertical spacing between the guide pipe support rod and the pivot point of the rear sled plate unchanged. By rotating around the moving fulcrum, the entire surface is kept in close contact with the rice field. As a result, regardless of the attitude of the V-groove direct sowing machine due to the sinking of the wheel of the towing vehicle, the height position of the guide pipe support rod with respect to the rice field can be kept constant, and the guide fixed to the guide pipe support rod is fixed. The arrangement position of the discharge opening at the lower end of the pipe with respect to the rice field can be kept constant.

  The invention of claim 4 is characterized in that, in the invention of any one of claims 1 to 3, the rear sled plate can be adjusted in the vertical position with respect to the guide pipe support rod.

  According to the invention of claim 4, the position of the discharge opening at the lower end of the guide pipe relative to the opening of the seeding groove is changed slightly by changing the position of the rear sled plate along the vertical direction with respect to the guide pipe support rod. Depending on the seed, the position of the discharge opening at the lower end of the guide pipe relative to the opening of the sowing groove can be finely adjusted.

  According to a fifth aspect of the present invention, in the invention according to any one of the first to fourth aspects, the amount of subsidence of the wheel of the tow truck relative to the paddy field is increased in front of the airframe, thereby A front sled plate that prevents the drive wheels from biting into the field is characterized by being arranged integrally with the fuselage on one side or both sides of the ground drive wheels.

  According to the fifth aspect of the present invention, when the sinking amount of the wheel of the towing vehicle increases, the amount of tilting of the body of the V-groove direct seeder toward the towing vehicle centering on the rotation axis of the grooved wheel increases. The ground drive wheel of the ground type power generator tries to bite into the surface, but due to the presence of the front sled plate arranged on one side or both sides of the ground drive wheel, the ground drive wheel against the surface The ground drive wheel always maintains proper grounding without inhibiting the generation of power due to the grounding force.

  A sixth aspect of the invention is characterized in that, in any of the first to fifth aspects of the invention, the towing vehicle is a riding management machine having wheels that are narrower than the width of the seeding groove.

  Since the width of the wheel of the riding management machine is narrower than the interval between the seeding grooves, a recess due to the wheel marks is not formed at the planned seeding groove formation position, so that it is possible to avoid the inability to form the seeding groove due to the presence of the recess, Since a wheel with a narrow wheel width has a small contact area, the amount of settlement of the wheel is large in a soft rice field. However, according to the invention of claim 6, even if the amount of subsidence of the wheel of the tow truck becomes large by using the V-groove direct seeder according to the invention of claim 1, Since the position of the discharge opening at the lower end can always be held at the most appropriate position, it is always possible to secure an optimal seed drop position by using a riding management machine with a narrow wheel width in a soft rice field, so that seeds are placed in the sowing groove. Sowing.

  According to the present invention, the guide pipe support rod disposed laterally at the rear portion of the machine body of the V-groove direct seeding machine has the lower end position with respect to the machine body regulated by the regulating member via the pair of left and right arms. A rear sled plate that is supported by the machine so as to be movable up and down and is always landed on the surface during work is disposed between the adjacent seeding grooves on the guide pipe support rod and below the guide pipe support rod. Since the lower end of the seed pipe is supported by the guide pipe support rod in a semi-fixed state, the position of the discharge opening at the lower end of the guide pipe of the seeding device is Regardless of the amount of settlement, the seeds are kept constant, so that all seeds can be supplied to the sowing groove immediately after formation without being scattered around the seeds, so that seeds can be seeded without waste. In addition, when a tension spring is used as the regulating member, when the V-groove direct sowing machine is lifted and turned at the end of the grooved ring, the guide pipe support rod is smoothly lowered without falling down, and the V-groove direct sowing is performed. In addition to being able to regulate the descending end of the guide pipe support rod with respect to the machine body, during the sowing operation, a force that lifts the guide pipe support rod upward acts by the elastic restoring force of the tension spring. It also has the effect of reducing the weight of the pipe support rod. By reducing the weight of the guide pipe support rod, the required number of rear sled plates can be reduced, and the spring constant of the compression spring that biases the rear sled plate downward can be reduced, so that a weak compression spring can be used.

It is a side view of the V-groove direct seeding machine A connected to the riding management machine B. It is also a plan view. It is a front view of V-groove direct seeder A. It is a back view similarly. It is a perspective view of V-groove direct seeding machine A seen from diagonally forward. It is a perspective view of V-groove direct seeding machine A seen from diagonally back. It is a typical top view which shows arrangement | positioning of many grooved ring W and each front and back sled board Pf, Pb. (A) is the figure which fractured | ruptured one of the two adjacent grooved wheels W attached to the drive shaft 2, (b) is XX sectional drawing of (a). It is a perspective view which shows the arrangement | positioning relationship of the back sled board Pb with respect to the guide pipe support rod E and each guide pipe 24. FIG. (A), (b) is the right view and left view of V-groove direct seeding machine A, respectively. It is a view illustrating the operation of a pair of tension springs S ₂ for regulating the falling edge of the induced pipe support rod E. FIG. 6 is a partial side view showing a rotating action of a work machine connection unit U of the riding management machine B. (A), (b) is a side view of the V-groove direct seeder A when the sinking amount of the rear wheel M ₂ of the riding management machine B with respect to the surface F is H ₁ , H ₂ (H ₂ > H ₁ ), respectively. It is a figure which shows the change of an attitude | position. (C), (d) shows the V-groove direct seeding machine A when the sinking amount of the rear wheel M ₂ of the riding management machine B with respect to the surface F is H ₃ , H ₄ (H ₄ > H ₃ > H ₂ ), respectively. It is a figure which shows the change of the attitude | position in a side view. It is a side view of the state where the V-groove direct seeder A was lifted during turning of the towing vehicle. It is a side view of another example of the regulating member that regulates the descending end of the guide pipe support rod E. (A), (b) is sectional drawing of the formation state of a seeding groove | channel V, and a seeding state, respectively.

Hereinafter, the present invention will be described in more detail with reference to an optimal example. First, referring to FIG. 1 to FIG. 7, the V-groove direct sowing machine A connected to the riding management machine B which is a towing vehicle is pulled by the riding management machine B, so that the sowing groove V is formed on the surface F. Will be described immediately after the formation of the seed K in the sowing groove V and the operation thereof, and then the front wheel M ₁ and the rear wheel M ₂ of the riding management machine B, particularly the rear wheel M _2. The configuration in which the arrangement position of the guide pipe support rod E with respect to the field surface F is unchanged even when the posture of the V-groove direct seeder A in the side view changes due to the change in the amount of settlement H will be described in detail.

As shown in FIG. 1 to FIG. 3, the passenger management machine B having a PTO shaft (power take-off shaft) has a pair of front wheels M ₁ and rear wheels M ₂ mounted on a body 61, and a pair of rear wheels. A work machine connection unit U and a PTO shaft (not shown) for connecting the work machine are arranged at the center in the width direction of M ₂ , and the work machine connection unit U is a rotating shaft of a pair of rear wheels M ₂ . As shown in FIG. 12, the working machine connected to the working machine connecting unit U (in the present invention, The V-groove direct seeder A) is moved up and down between a working state indicated by a solid line and a non-working state indicated by a two-dot chain line. In the working state, since the hydraulic pressure is not applied to the work machine connection unit U, the work machine connection corresponding to the subsidence amount H of each of the wheels M ₁ and M ₂ before and after the riding management machine B with respect to the surface F is performed. The unit U can be rotated about the rotation axis C ₀ of the rotation shaft 62. Further, the wheel width, which is the width of each of the wheels M ₁ and M ₂ itself before and after the passenger management machine B, is determined from the interval D (see FIG. 7) of the numerous sowing grooves V formed simultaneously by the V-groove direct sowing machine A. Since the front and rear wheels M ₁ and M ₂ are arranged between the portions where the adjacent sowing grooves V are to be formed, the V groove direct sowing machine A The seeding grooves V can be formed continuously on the surface F regardless of the presence of the recesses that are the wheel marks on the surface. In the passenger management machine B, the distance between the pair of front wheels M _{1 and} the distance between the pair of rear wheels M ₂ are the same.

As shown in FIGS. 5, 7, and 10, the V-groove direct seeding machine A is supported by the machine body 1 so that the drive shaft 2 is rotatable along a horizontal direction perpendicular to the traveling direction Q of the machine body 1, A large number (eight in the embodiment) grooved wheels W are integrally attached to the drive shaft 2 at a constant interval along the direction of the rotation axis C ₁ of the drive shaft 2. .

  The groove ring W has various structures, and an example is shown in FIG. The grooved ring W is formed by welding the outer peripheral portions of a large-diameter and small-diameter pair of curved disks 11 and 12 having a central hole on the small-diameter curved disk 12 side to form a pair of curved disks. 11, 12 are integrated, and a short cylindrical mounting cylinder 14 is fitted into each of the center holes 11a, 12a of the pair of curved disks 11, 12, and integrated by welding 13, and finally, A split saddle ring body 15 is fitted on the outside of the pair of curved disks 11, 12 and integrated by welding 13. The shape in which the pair of curved disks 11 and 12 are integrated by welding 13 is close to the shape of the abacus ball including the central hole. As a result, the groove-projecting plate portion 21 having a sharp V-shaped cross section is formed on the entire circumference of the center portion in the width direction of the depth-regulating restriction rod ring body 16 constituted by the pair of divided rod ring bodies 15. It becomes the groove ring W of the structure projected over. A seeding groove V corresponding to the cross-sectional shape of the groove-growing protruding plate portion 21 is formed on the surface F by the drive rotation of the drive shaft 2. A large number of mounting cylinders 14 integrally provided with the groove ring W are fitted to the outside of the drive shaft 2, and both are integrated by the connecting pin 17, so that the drive shaft 2 and the surface F are integrated. A plurality of seeding grooves V to be formed are integrally attached at intervals corresponding to the intervals (pitch) [D] [see FIG. 7] of the plurality of seeding grooves V to constitute the groove forming device N (see FIG. 7). A nut 18 is fixed to the mounting cylindrical body 14 by welding, and a tip end portion of a bolt 19 screwed to the nut 18 is inserted into a through hole 14a provided in the mounting cylindrical body 14 so as to drive the drive shaft. 2 is prevented from rattling between the drive shaft 2 and the mounting cylinder 14.

A work machine side connection tool 3 connected to the work machine connection unit U of the riding management machine B is provided at the lateral center of the front part of the machine body 1 of the V-groove direct seeding machine A, and the work machine side connection tool is provided. 3, a power input shaft 4 that is connected to a PTO shaft (not shown) of the passenger management machine B and that drives and rotates the drive shaft 2 is arranged in a state of protruding forward. The power input to the input shaft 4 is driven by a drive shaft 2 to which a large number of grooved wheels W are attached via a power transmission mechanism constituted by a combination of a bevel gear mechanism (not shown) and a chain gear mechanism 5. Is transmitted to. 5 and 10, C ₂ indicates the axis of the input shaft 4, and in FIG. 7, 6 is integrally attached to the central portion of the drive shaft 2 in the direction of the rotation axis C _1. The chain gear which comprises the chain gear mechanism 5 is shown.

  A large number of seed and fertilizer hoppers (hereinafter simply referred to as “hoppers”) 22 as many as the grooved wheels W are arranged almost directly above the grooved wheel W. The inside of the hopper 22 is separated into a seed storage chamber and a fertilizer storage chamber (both not shown) by a separating plate, and the seed and fertilizer separately fed from each storage chamber are directly under the hopper 22. Receivers that can be stored in a mixed state, and each receiver 23 stores a fixed amount of a mixture of seeds and fertilizer by continuous rotation and discharges downward by rotation. A mechanism (not shown) is arranged, and each receiver 23 is connected to a guide pipe 24 for guiding the fall of the mixture of seed and fertilizer supplied in a fixed amount, and a discharge opening at the lower end of each guide pipe 24 The lower end portion of the predetermined length starting from 24a is semi-fixed to the guide pipe support rod E to determine the inclined arrangement state, and the lower end portion of each guide pipe 24 is driven by the rotation of the drive shaft 2. Shaped by groove ring W They are arranged in a state that faces the opening of the by seeding groove V.

  As shown in FIGS. 3 and 5, the rotary fixed supply mechanism provided in each receiver 23 is a ground drive wheel 25 that constitutes a ground power generation apparatus T disposed in the front part of the machine body 1. Is transmitted to the seed feeding shaft 26 that communicates with the rotary quantitative supply mechanism in each receiver 23 through the power transmission mechanism. A grounding wheel support frame 27 is supported on the front portion of the machine body 1 so as to be rotatable in a state of being biased upward by the elastic restoring force of the tension spring 28. The support rod 29 is integrally provided in a state of being arranged substantially horizontally toward the rear of the machine body 1, and the ground drive wheel 25 is supported in a cantilevered support state at the free end portion on the back side of the ground ring support rod 29. ing. The grounding type power generation device T includes the grounding drive wheel 25, the grounding wheel support frame 27, the tension spring 28, and the grounding wheel support rod 29. Therefore, the ground drive wheel 25 is urged downward by the elastic restoring force of the tension spring 28 to ensure the ground force. The driving rotational force of the ground drive wheel 25 is transmitted to the seed feeding shaft 26 via the universal joint 32 and the chain gear mechanism 33. Therefore, a mixture of seeds and fertilizer in an amount proportional to the traveling speed of the machine body 1 is discharged from the hopper 22 and supplied to the sowing groove V through the induction pipe 24. The seed feeding shaft 26 can be driven and rotated by an electric motor.

  The seeding device G is a rotary quantitative supply mechanism that quantitatively discharges a mixture of seeds and fertilizers through the numerous hoppers 22, the same number of induction pipes 24 as the hoppers 22, and the receptacles 23 of the hoppers. And a seed feeding shaft 26 that rotates the seed.

  In the present invention, as shown in FIG. 4 to FIG. 6, FIG. 10 and FIG. 11, the arrangement shape of the vicinity of the lower ends of the many guide pipes 24 and the position of the discharge opening at the lower end of each guide pipe 24 with respect to the field surface F For this reason, the vicinity of the lower ends of the plurality of guide pipes 24 is supported in a semi-fixed state on the guide pipe support rod E, so that the inclined posture of the vicinity of the lower ends of the guide pipes 24 and The position of the discharge opening is maintained. The vicinity of the lower end of each guide pipe 24 is held by a pair of upper and lower guide pipe holding plates 34 fixed to the front surface of the guide pipe support rod E in a posture facing obliquely downward.

In each arm support rod 35 provided at both lateral ends of the body 1 of the V-groove direct seeder A, the base end portion of each support arm 36 having an obtuse L-shape is centered on the rotation axis C _3. By being respectively supported rotatably, the free end side of each support arm 36 is arranged in the vertical direction, and both ends of the guide pipe support rod E are arranged in the vertical direction in each support arm 36. It is integrally connected to the free end side. The support arm 36 has an obtuse angled first support member 36a whose one end is rotatably supported by the body 1 and a second support member 36b whose lower end is integrally connected to the guide pipe support rod E. Are integrally connected. Therefore, the guide pipe support rod E is moved up and down with respect to the machine body 1 by being rotated about the rotation axis C ₃ of the base end portion of each of the pair of left and right support arms 36. The arrangement position of the guide pipe support rod E in the height direction with respect to the surface F is determined by the arrangement positions of a plurality of (three in the embodiment) rear sled plates Pb with respect to the body 1.

That is, as shown in FIGS. 4, 6, 7, and 10, a total of three rear sled plates Pb are arranged at predetermined intervals along the lateral direction so as to avoid interference with the sowing groove V immediately after formation. In this state, the front earth discharging plate portion 37 is integrally connected via a connecting rod 38. Two bracket plates 40 are fixed to the portion of the main body plate portion 39 of the central rear sled plate Pb close to the soil discharge plate portion 37 at a predetermined interval in the lateral direction, and between the two bracket plates 40, A base end portion of the sled plate support rod 41 inclined in a side view is connected to be pivotable about a rotation axis C ₄ (see FIGS. 9 and 10). A height adjustment rod 42 for adjusting the position of the rear sled plate Pb in the height direction relative to the guide pipe support rod E and fixing the plurality of rear sled plates Pb to the guide pipe support rod E is provided at the tip. It is fixed so that it is almost vertical. A spring support rod 43 is fixed vertically to the front end portion of the central rear sled plate Pb, that is, the portion opposite to the two bracket plates 40 with respect to the height adjusting rod 42 in the main body plate portion 39. The coil-like compression spring S ₁ is fitted into the spring support rod 43, and the compression spring S ₁ is restricted in maximum extension by a snap pin 44 that is penetrated and supported by the spring support rod 43. A spring pressing plate 45 that presses ₁ to generate an elastic restoring force is fixed horizontally to the height adjusting rod 42 and is interposed between the upper end of the compression spring S ₁ and the snap pin 44. As a result, the vertical dimension (spacing) between the guide pipe support rod E and the rotational axis C ₄ of the rear sled plate Pb is set to the settling of the wheels M ₁ and M ₂ of the riding management machine B with respect to the surface F. The entire surface of the rear sled plate Pb is elastically brought into contact with the surface F, regardless of the change in the posture of the body 1 of the V-groove direct seeder A due to the above.

  On the other hand, the height adjusting rod 42 is inserted and fixed at the center in the longitudinal direction of the rear surface of the guide pipe support rod E, and the total of the three rear sled plates Pb with respect to the guide pipe support rod E in the height direction. Each cylindrical height adjusting rod insertion fixture 46 for fixing the arrangement position is fixed. By adjusting the insertion length of the height adjustment rod 42 on the side of the rear sled plate Pb with respect to the height adjustment rod insertion fixture 46, the height adjustment rod is adjusted with respect to the height adjustment rod insertion fixture 46 via the fixing bolt 47. By fixing 42, the arrangement positions in the height direction of the total three rear sled plates Pb with respect to the guide pipe support rod E are determined to be adjustable.

Further, at the time of sowing the V-groove, the working machine connection unit U of the riding management machine B is rotated by the hydraulic shaft at the formation end of the sowing groove V in the rice field so that the body 61 of the riding management machine B is rotated. On the other hand, when turning the riding management machine B with the V-groove direct sowing machine A lifted up, it is necessary to regulate the descending end position of the guide pipe support rod E with respect to the body 1 of the V-groove direct sowing machine A. Therefore, the upper spring connecting rods 48 that extend to the top of the rear side of the machine body 1 and extend directly above the guide pipe support rod E and are fixed in a cantilever manner, and the guide pipe support rods. Both ends of the tension spring S ₂ are connected to each lower spring connecting plate 49 integrally provided above both ends in the longitudinal direction (lateral direction) of E. Accordingly, as shown in FIG. 14, when the V-groove direct sowing machine A is lifted with respect to the machine body 61 of the riding management machine B, the guide pipe support rod E is lowered with respect to the machine body 1. At the position where the weight of the support rod E and the elastic restoring force of the extended tension spring S ₂ are balanced, the lowering of the guide pipe support rod E with respect to the body 1 stops. The pair of left and right tension springs S ₂ function as a regulating member that regulates the descending end position of the guide pipe support rod E with respect to the airframe 1. The regulating member is not limited to the tension spring S ₂ , but as the regulating member. When the tension spring S ₂ is employed, when the guide pipe support rod E descends with respect to the airframe 1, it can be prevented from being suddenly lowered by the elastic restoring force of the tension spring S _2. There exists an advantage which can prevent that the component of 1 is damaged.

Further, when the tension spring S ₂ is used as a regulating member for regulating the descending end position of the guide pipe support rod E with respect to the machine body 1, the guide pipe support rod E is moved by the elastic restoring force of the tension spring S ₂ during the sowing operation. When the upward lifting force is applied, the weight of the guide pipe support rod E is reduced. By reducing the weight of the guide pipe support rod E, it is possible to reduce the required number of rear sled plates Pb and to use a compression spring S ₁ having a small spring constant and a weak spring constant. Still another regulating member may be a rope-like member including a chain having a surplus length in the sowing operation state, and the machine body 1 and the guide pipe support rod E may be directly connected by the rope-like member.

  As other restricting members for restricting the descending end position of the guide pipe support rod E with respect to the machine body 1, as shown in FIG. 15, the pipe support rod side restriction arms 56 provided at the left and right ends of the guide pipe support rod E. In addition, a long hole 58 extending in the vertical direction is provided in one of the machine body side regulating arm 57 and a locking pin 59 inserted and locked in the long hole 58 is provided on the other side. Is inserted and locked in the long hole 58, and the guide pipe support rod E is moved up and down by a length shorter than the long hole 58, so that the guide pipe support rod E is lowered relative to the fuselage 1. The end position can be regulated.

As described above, the vertical dimension (interval) between the guide pipe support rod E and the rotational axis C ₄ of the rear sled plate Pb is determined by the surface F of the wheels M ₁ and M ₂ of the riding management machine B. Because the entire surface of the rear sled plate Pb is elastically contacted with the surface F, the rear sled plate Pb is always The entire surface is in close contact with the field surface F, and the arrangement height position of the guide pipe support rod E with respect to the field surface F is stably maintained. As a result, the position of the discharge opening 24a at the lower end of the guide pipe 24 of the seeding device with respect to the opening of the seeding groove V can be accurately maintained (see FIG. 16). Further, for the slight unevenness of the surface F, the unevenness is absorbed by the rear sled plate Pb slightly moving up and down with respect to the guide pipe support rod E, and the guide pipe support rod E itself moves up and down. Then, the disposition position of the discharge opening at the lower end of each guide pipe 24 and the disposition shape of the lower end portion are stably maintained, so that the sowing with respect to the sowing groove V is performed stably.

Further, when the rice field is weak, if the amount of settlement of the wheels M ₁ and M ₂ before and after the body 61 of the riding management machine B becomes large, the body 1 of the V-groove direct seeding machine A will rotate the rotational axis of the drive shaft 2. Since it tilts toward the front passenger management machine B with C ₁ as the center, the ground drive wheel 25 arranged at the front of the airframe 1 can easily bite into the surface F, and the ground drive is driven by the bite. The rotational resistance of the wheel 25 increases, which hinders generation of driving force due to rotation. When the V-groove direct seeding machine A is slightly tilted toward the riding management machine B around the rotation axis C ₁ of the drive shaft 2, the tension spring 28 is slightly extended, and the grounding wheel support frame 27, the ground drive wheel 25 is prevented from sinking with respect to the paddy field F because the angle formed by the inclined arrangement members on both the left and right sides and the ground ring support rod 29 constituting 27 is slightly reduced. Therefore, as shown in FIGS. 2, 5, and 10, front sled plates Pf ₁ and Pf ₂ are respectively disposed on both sides of the ground drive wheel 25 in the front portion of the body 1. Each front sled plate Pf ₁ , Pf ₂ is fixedly supported by a horizontal barb 52 at the front portion of the airframe 1 via a plurality of support rods 51, and the front portion of each front sled plate Pf ₁ , Pf ₂ is bent. The earth removing plate portion 53 eliminates soil intrusion. Since the ground drive wheel 25 is provided on one end side with respect to the central portion in the lateral direction (width direction) of the machine body 1, the lengths of the front sled plates Pf ₁ and Pf ₂ are different. Since the total area of each of the front sled plates Pf ₁ and Pf ₂ is large, in cooperation with the plurality of rear sled plates Pb, a large number of grooved wheels W integrally attached to the drive shaft 2 are formed in the soft rice field. It also serves to prevent sinking to the surface F. Incidentally, Since the distance between the front sled plate Pf _1, Pf ₂ and the drive shaft 2 small, there is no obstacle to variation in precipitation quantity of each wheel M _1, M ₂ of the front and rear passenger tiller B.

  As shown in FIGS. 9 and 11, a scraper mounting rod 54 is disposed in the lateral direction in front of the guide pipe support rod E and in the obliquely lower portion, and is attached to the scraper mounting rod 54. Are mounted with a pair of left and right scrapers 55 for scrubbing the dirt adhering to both surfaces of the groove-projecting plate portion 21 of each groove-ring W having a V-shaped cross section disposed in front thereof.

Next, FIG. 13-A, with reference to FIG. 13-B and 16, regardless of the subsidence H for paddy F of each wheel M _1, M ₂ of the front and rear passenger tiller B, sowing apparatus G The operation of the present invention, which can make the arrangement position of the discharge opening 24a at the lower end of each guide pipe 24 in the height direction with respect to the surface F, constant, will be described.

Even if each wheel M ₁ , M ₂ , especially the rear wheel M ₂ of the front and rear of the riding management machine B sinks with respect to the field surface F because the rice field is soft, it is attached to the drive shaft 2 of the V-groove direct seeder A. Each of the wheels M ₁ and M ₂ has a control rod ring body 16 having a predetermined width pressed against the surface F, and the front and rear sled plates Pf ₁ , Pf ₂ , and Pb have a large area. Therefore, since the machine body 1 of the V-groove direct sowing machine A with respect to the rice field F is in contact with the rice field F, the subsidence of the airframe 1 hardly occurs.

  In the above state, when the V-groove direct sowing machine A is pulled in the direction of the arrow Q by being pulled by the riding management machine B, the power generated by the riding management machine B is input to the V-groove direct sowing machine A via the PTO shaft. 4, the power is transmitted to the drive shaft 2 via the bevel gear mechanism and the chain gear mechanism 33 (see FIG. 10), and a large number of grooved wheels W attached to the drive shaft 2 are integrated. Drive and rotate. As a result, a seeding groove V having a depth J corresponding to the protruding length J of the groove forming protrusion plate portion 21 of the groove forming ring W (see FIG. 16A) is formed on the surface F. On the other hand, the rotational force (power) generated by the grounding force of the ground driving wheel 25 is transmitted to the seed feeding shaft 26 of the seeding device G via the universal joint 32 and the chain gear mechanism 33, so The seed K and the fertilizer as needed are guided to the guide pipe 24 in a mixed state, and dropped and stored in the sowing groove V immediately after formation from the discharge opening 24a at the lower end thereof. Sowing.

When the body 61 of the riding tiller B against paddy F is sinking, body 1 of the V-shaped groove straight seeder A is about the rotation axis C ₁ of the drive shaft 2 of the large number of Sakumizowa W, forward Is slightly tilted toward the passenger management machine B, and the tilt angle increases in proportion to the amount of settlement of the wheels M ₁ and M ₂ before and after the body 61 of the passenger management machine B. On the other hand, each of the plurality of rear sled plates Pb and the guide pipe support rod E is integrated, and each of the rear sled plates Pb is pressed against the surface F by the weight of the guide pipe support rod E, thereby compressing. The spring S ₁ is compressed by a predetermined amount, and each rear sled plate Pb is elastically pressed against the surface F.

Further, the guide pipe support rod E is supported on both side surfaces of the body 1 through a pair of left and right support arms 36 so as to be rotatable about the rotation axis C _3. Even if the machine body 1 of the groove direct sowing machine A rotates to the passenger management machine B side, the guide pipe support rod E is in the height direction with respect to the surface F regardless of the rotation of the machine body 1 of the V groove direct seeding machine A. The arrangement position in the (vertical direction) is kept constant. That is, the riding management machine B sinks with respect to the surface F, and the body 1 of the V-groove direct seeding machine A is slightly on the front riding management machine B side around the rotation axis C ₁ of the drive shaft 2. As a result, the pair of support arms 36 that support both ends of the guide pipe support rod E rotate relative to the airframe 1, so that the pair of support arms 36 are regardless of the tilting, stationary along the rotational direction of the pivot axis C _3, always holds a constant position with respect to the absolute space. As a result, in the case of the conventional V-groove direct sowing machine A, the body 1 of the V-groove direct sowing machine A tilts forward due to the sinking of the wheels M ₁ and M ₂ of the riding management machine B with respect to the surface F, The guide pipe support rod E integrated with the machine body 1 moves upward with respect to the field surface F, so that the discharge opening at the lower end of the guide pipe 24 is the field surface F, that is, the sowing groove formed in the field surface F. It is separated from the opening of V. However, in the present invention, as described above, regardless of the amount of settlement of the wheels M ₁ and M ₂ of the passenger management machine B with respect to the field surface F of the body 61, the guide pipe support rod E in the height direction with respect to the field surface F Since the arrangement position is constant and unchanged, the position of the discharge opening at the lower end of the guide pipe 24 with respect to the sowing groove V is unchanged with respect to the opening of the sowing groove V, and is always arranged at the optimum position. The

Even when the amount of subsidence of the wheels M ₁ and M ₂ before and after the riding management machine B with respect to the surface F becomes large (deep), the front sled plate Pf is arranged in front of the rotational axis C ₁ in the machine body 1. At the same time, since the regulation rod ring body 16 of the grooved ring W is always in contact with the surface F, the V-groove direct seeding machine A is prevented from sinking. When the amount of subsidence of the wheels M ₁ and M ₂ before and after the riding management machine B with respect to the table surface F changes, the integrated work machine connection unit U and V-groove direct seeding machine A center on the rotation axis C ₀ . The guide pipe support rod E is arranged so as to be movable up and down without being constrained with respect to the machine body 1, although the attitude of the machine body 1 of the V-groove direct seeding machine A changes in the predetermined direction. The arrangement position in the height direction is held constant by the rear sled plate Pb. Therefore, the arrangement position of the lower end of the guide pipe 24, the portion of which is close to the lower end supported by the guide pipe support rod E, with respect to the field surface F of the discharge opening 24a is always constant, and a structure that does not move up and down is realized. Further, since the body 1 of the V-groove direct seeding machine A does not sink greatly with respect to the surface F, the ground driving wheel 25 is grounded to the surface F by the tension spring 28, and a necessary rotational driving force is obtained.

13-A and 13-B show subsidence amounts H _{1 to} H _{4 of the} wheels M ₁ and M ₂ before and after the passenger management machine B with respect to the field F [H ₁ (= 50 mm) <H ₂ (= 100 mm). _{<H 3 (= 150mm) <} H 4 (= 200mm) ] is a diagram showing a change in the attitude in the side view of the machine body 1 of the V-shaped groove straight seeder a in the case of change, the subsidence H ₁ to H ₄ Is changed, the arrangement position of the guide pipe support rod E in the height direction with respect to the surface F is not changed, and as a result, the discharge openings 24a at the lower ends of the many guide pipes 24 with respect to the openings of the seeding grooves V immediately after the formation. It is clearly shown that the arrangement position of is invariable regardless of the amount of subsidence of the wheels M ₁ and M ₂ of the body 61 of the passenger management machine B. Θ _{1 to} θ ₄ (θ ₁ <θ ₂ <θ ₃ <θ ₄ ) are straight lines in the longitudinal direction of the first support member 36a passing through the axis C ₂ of the input shaft 4 and the rotation axis C _3. 13-A and 13-B, the sinking amount H of each wheel M ₁ , M ₂ of the riding management machine B becomes large, and the body 1 of the V-groove seeding machine A is shown in FIGS. Is tilted toward the passenger management machine B, the subsidence amounts H _{1 to} H ₄ are shown to increase in proportion.

In this way, regardless of the sinking amount H of each wheel M ₁ , M ₂ of the riding management machine B, the arrangement position in the height direction of the discharge opening 24a at the lower end of each guide pipe 24 constituting the seeding device G remains unchanged. However, as shown in FIG. 16 (b), it is disposed at a position facing the opening of the seeding groove V immediately after formation. Therefore, regardless of the settlement amount H of each wheel M ₁ , M ₂ of the riding management machine B, all of the seeds K that are dropped from the discharge opening 24a of the guide pipe 24 are accommodated in the sowing groove V, Since it is not scattered outside the sowing groove V, a necessary amount of seeds K can be sown in the sowing groove V, and the seed K is not wasted due to peripheral scattering.

Further, at the formation end of the seeding groove V, the work machine connection unit U of the riding management machine B is lifted from the position shown by the solid line in FIG. 12 to the position shown by the two-dot chain line. When the V-groove direct seeding machine A connected to the rear part of the riding management machine B is lifted by hydraulic pressure, the guide pipe support rod E, the plurality of rear sled plates Pb, and the support arm 36 are shown in FIG. As shown by the solid line in FIG. 14, the weight of the guide pipe support rod E and the plurality of rear sled plates Pb is lowered to a position where the elastic restoring force due to the extension of the pair of left and right tension springs S ₂ is balanced. . Here, the guide pipe support rod E is connected to the pair of left and right upper spring coupling rods 48 provided on both sides of the body 1 through the pair of left and right tension springs S _2. Even when the guide pipe support rod E is lowered, the tension spring S ₂ is gradually extended, so that the guide pipe support rod E does not drop suddenly with respect to the machine body 1, so that it is movable with respect to the machine body 1. There is an advantage that it is possible to prevent damage to the guide pipe support rod E, the plurality of rear sled plates Pb, and the pair of left and right support arms 36 which are members to be performed.

Further, regarding the towing vehicle of the V-groove direct sowing machine A, the front and rear wheels M ₁ , M are arranged in the sowing groove forming scheduled portion when the riding management machine B has a wheel width narrower than the strip interval D of the sowing groove V. _Although there is an advantage that the concave portion due to the wheel trace of ₂ is not formed, it is also possible to pull by a standard tractor using a three-point link hitch mechanism.

A: V-groove direct seeder
B: Passenger management machine (traction vehicle)
C ₀ : Rotation axis of the rotation axis of the riding management machine
C ₁ : Rotation axis of drive shaft
C ₃ : The pivot axis of the support arm
C _4: rotation of the rear sled plate axis
E: Guide pipe support rod
F: Tabu
G: Seeding device H (H _{1 to} H ₄ ): Sinking amount of wheel of riding management machine
J: Seeding groove depth
K: Seeds
M ₁ : Front wheel of passenger management machine
M ₂ : Rear wheel of the passenger management machine Pf ₁ , Pf ₂ : Front sled plate
Pb: Back sled board
Q: Direction of travel of V-groove direct seeder
S ₁ : Compression spring
S ₂ : Tension spring
V: Sowing groove
W: Groove ring
1: V-groove direct seeder
2: Drive shaft
16: Regulated ring body
21: Groove protruding plate
22: Seed and fertilizer hopper
25: Ground drive wheel
27: Grounding wheel support frame
29: Ground ring support rod
36: Support arm
36a: first support member
36b: second support member
61: Aircraft of the passenger management machine
62: Rotating shaft of work implement connection unit

Claims (6)

A drive shaft is supported on a machine body connected to the towing vehicle along a lateral direction perpendicular to the traveling direction of the machine body, and a plurality of grooved wheels are supported on the drive shaft at a predetermined interval. Has a groove-shaped projecting plate portion having a V-shaped cross section at the center in the width direction of the control rod ring body for depth control, and a large number of sowing grooves are formed on the rice field by the progress of the machine body. A grooving device for grooving;
From the various child and fertilizer hoppers that are horizontally supported along the lateral direction at the rear part of the machine body and are arranged corresponding to the arrangement positions of the grooved wheels of the grooved device in the machined body, A seeding device in which a lower end portion of each guide pipe for supplying seeds and, if necessary, fertilizer to each seeding groove immediately after grooving is supported by the guide pipe support rod,
The seed feeding shaft that penetrates the lower end of each child / fertilizer hopper is driven via a transmission mechanism by the driving rotational force of the ground drive wheel that is attached to the front part of the machine body and is urged and grounded to the surface by the urging means. A grounding-type power generator for driving
V-groove direct sowing machine equipped with
Corresponding to the sinking of the wheel of the towing vehicle, the lower end position of the guide pipe with respect to the sowing groove is not changed regardless of the attitude of the airframe tilting toward the towing vehicle about the drive shaft. Therefore, the guide pipe support rod is supported to be able to be moved up and down by the body through a pair of left and right support arms in a state where the descending end position with respect to the body is regulated by a regulating member, and is always landed on the surface during work. The rear sled plate that holds the arrangement position of the guide pipe support rod with respect to the paddy surface is between the adjacent sowing grooves in the guide pipe support rod, and is disposed below the guide pipe support rod. A V-groove direct sowing machine, which is mounted on a guide pipe support basket.   2. The V according to claim 1, wherein the restriction member is a pair of left and right tension springs that connect left and right end portions of the guide pipe support rod and a portion of the fuselage above the guide pipe support rod. Groove direct sowing machine.   The rear sled plate is rotatably supported by a sled plate support rod attached to a guide pipe support rod, and is urged downward with respect to the guide pipe support rod by a compression spring. Item 3. A V-groove direct seeder according to item 1 or 2.   4. The V-groove direct seeder according to claim 1, wherein the rear sled plate can be adjusted in the vertical position with respect to the guide pipe support rod. 5.   In front of the fuselage, there is a front sled plate that prevents the ground drive wheels of the ground-type power generation device from biting into the field by increasing the amount of subsidence of the wheel of the tow truck relative to the field. The V-groove direct seeding machine according to any one of claims 1 to 4, wherein the grounding driving wheel is disposed integrally with the airframe on one side or both sides of the ground drive wheel.   The V-groove direct seeder according to any one of claims 1 to 5, wherein the towing vehicle is a riding management machine having a wheel having a width narrower than that between the streak grooves.

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