JP2824172B2 - No-till paddy working machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention
The present invention relates to a no-till paddy field working machine for transplanting seedlings without scraping.

[0002]

2. Description of the Related Art Conventional rice cultivation work systems (tiling-plowing-)
Planting) is the entire field work of cultivating and substituting the entire field, and furthermore, cultivating and substituting using a cultivator, a tractor, etc., and then planting with a rice transplanter.・ A machine for scraping and a machine for planting are required.
Since the seedlings are planted after being left for a few days after the rice fields have settled down, much time and effort is required for the field maintenance work, and the cost cannot be avoided.

[0003] Therefore, various non-tilled paddy field working machines for transplanting seedlings into a non-tilled paddy field have been researched, developed and proposed (Japanese Utility Model Laid-Open No. 2-137811, Japanese Utility Model Laid-Open No. 2-137).
No. 812, JP-A-3-168005, JP-A-4-41
No. 211).

[0004]

However, in a non-tilled dry rice field, the soil is hard, so that at least the planting position (seeding position) must be expanded and softened by a groove or the like. by there is inconvenience or disturbance groove and field surface becomes its periphery shaped raised, also, clamping miscellaneous materials such as weeds and straw waste in the paddy no-till many, planting orientation is disturbed Therefore during planting There is now a feeling of planting accuracy.

[0005]

SUMMARY OF THE INVENTION A non-tilling paddy field working machine according to the present invention is based on the above-described actual situation, and is provided in front of the planting rods so as to correspond to each planting rod. In addition to providing a groove cutting body for forming a planting groove on a virtual extension line of the planting strip,
Between the planting positions by the respective grooves Setsutai and rod with each planting, each
A pressure-reducing roller that represses and levels each planted groove formed by the grooved body
The gist is that it is arranged for each article .

[0006]

According to the present invention, when the planting groove is formed by the groove cutting body, the raised and disturbed rice field is crushed and leveled by the crushing roller, and the seedlings are placed in the stable and relatively soft planting groove after the grading. Because it is planted, disturbance of the planting posture is reduced,
The crushing roller rolls and lays down the weeds at the same time as the ground leveling of the planting ditches, which reduces the adverse effects of seedling disturbance at the time of planting due to the weeds, further improves the planting accuracy of the seedlings, and improves planting after planting. It is easy to check the attachment state.

[0007]

To describe by an example the configuration shown in the drawings of the embodiments of the present invention, A seedling mounting table 2 via a lifting link consisting of the upper link 1a and Rowarinku 1b in the rear, drive case 3, Planta This is a six-row planting rice transplanter having a case 3a, a planting rod 4, a float 5 and the like, in which a planting portion B is detachably mounted. The planting machine has a front wheel 6, a rear wheel 7, a fertilizer tank 8, A fertilizer application device F for a fluid fertilizer (paste fertilizer) including a fertilizer pump P, a suction hose 9, a discharge hose 9a, and the like is provided, and is parallel to the planting from the discharge port 11a of the fertilizer nozzle 11 connected to the tip of the discharge hose 9a. Then the side fertilizer is to be applied. 12 is a transmission shaft to the planting section B,
13 is a planting clutch lever, and 14 is a stop clutch lever.

Reference numeral 15 denotes a groove cut body for forming a planting groove a provided on the virtual extension line L of the planting strip corresponding to each planting rod 4 in front of the planting rod 4, and alternately left and right on the outer periphery. Each of the grooved bodies 15 is formed on a pipe stay 16 which is laid horizontally on the planting part B. It is fixed to a shaft 19 that is swingably supported within a predetermined range via a rolling fulcrum mounting portion 17 and left and right support arms 18, and is configured to be forcibly rotated integrally with the shaft 19 in a direction indicated by an arrow in FIG. 2. I have.
The power is introduced from a propeller shaft 20 on the machine A side into a transmission case 22 integrated with a rear wheel shaft case 21 by chain transmission, and further from a PTO shaft 23 via a universal joint shaft 24 and a gear case 25 to a shaft 19 and a groove. It is transmitted to the cutting body 15. 23 'is a PTO clutch lever. The groove width of the groove cutting body 15 is configured to be substantially the same as the outer width of the seedling holding portion of the planting rod 4.

As shown in FIGS. 7 and 8, the PTO shaft 23 is automatically connected and disconnected in conjunction with the vertical movement of the seedling mounting table 2 to drive or stop the rotation of the groove cutting member 15. Can also be provided. That is, the PTO shaft 23 is
When the seedling mounting table 2 is lowered, it is urged by the spring 27 to the clutch engagement side. When the seedling mounting table 2 is raised, the wire fixed to the lower link 1b is formed. 28 is pulled, whereby the shifter 29 rotates and the PTO clutch 26 is disengaged. With this structure, there is no room for forgetting to disengage the PTO clutch lever 30 during traveling on the road, and the safety is further improved. When the seedling mounting table 2 is raised, it is possible to prevent the bending angle of the universal joint shaft 24 from being increased while the groove cutting body 15 is being driven, thereby preventing the transmission of power from being forcibly performed.

Since the gear case 25 is only connected to the machine body fixed side by the universal joint shaft 24, the gear case 25 is rebounded by the forced rotation of the grooved body 15.
Although the rotation itself cannot be avoided around the shaft 19, the rotation is prevented by a support 31 extending backward and forward and extending left and right from the rear wheel axle case 21. That is, the front end side of the bracket 33 is provided with the pin 3 in the longitudinal hole 32a opened in the plate 32 fixed to the transmission case
The support 31 is connected to the pin 35 provided on the rear end side of the bracket 33 so as to be rotatable left and right in the range of the long hole 32 a via the front end 4. The end is attached to the upper surface of the gear case 25. It is conceivable to attach a detent to the planting portion B or to perform detent with a bracket using the universal joint shaft 24,
In the former case, when the planted portion B rises, the joint angle of the universal joint shaft 24 becomes large, and smooth transmission is hindered. In the latter case, when an impact load is applied to the groove cut body 15, the universal joint shaft 24 is damaged or damaged.
There is a risk of deformation.

At the rear outer side of each of the above-mentioned groove cutting bodies 15, a groove forming body 36 for forming a fertilizing groove b, which is located in front of the planting rod 4, is provided. Are provided along the left and right sides. In this embodiment, bracket 3 fixed in the mounting bracket 37 to the pipe stay 16
8, a plate 39 to which the fertilizing nozzle 11 is welded to the front end is fixed with bolts 40 and 40a.
The disk-shaped groove 36 is rotatably supported on the disk. The grooved body 36 has its front side wrapped around the rear side of the grooved body 15 in a side view. Further, in order to enhance the cultivation effect on the trail of passage of the groove cut body 15 and to secure the passage groove space for the fertilizing nozzle 11, the shaft is tilted at a predetermined angle in the front-rear direction and the left-right direction, respectively. It is supported. Since the grooving body 36 and the fertilizing nozzle 11 are disposed at a position apart from the front of the planting position by the planting rod 4 and not at the front, the fertilizer is applied when the root of the seedling is immersed in the rice field while the side is fertilizing. There is no mud pushing by the nozzle 11 or the like, and therefore, the dislocation of the planting seedling posture and the like due to the mud pushing are prevented. After fertilization groove b formed by fertilization position location is Sakumizotai 36, but before suppression by crush rollers described later, it is not necessarily limited to the vicinity of Sakumizotai 36 as in this embodiment.
The inclination angle of the groove body 36 can be set arbitrarily. However, the inclination angle can be adjusted by interposing an angle adjusting spacer (not shown) between the bracket 38 and the plate 39.

Reference numeral 41 denotes a pressure-reducing roller for repressing and leveling the planting groove a formed by the groove cutting body 15.
Numeral 1 is rotatably disposed between the cropping body 36 and the planting position c of the seedling f by the planting rod 4 (the lowermost end of the rotation locus R of the planting rod 4). The typical mounting structure is as follows. That is, a base end of an arm 43 having a roller shaft 42 protrudingly provided at a tip thereof for rotatably supporting the pressure reduction roller 41 is fastened together by bolts 40 and 40a between the bracket 38 for mounting the grooved body and the plate 39. And upper bolt 4
The zero bolt hole 43a is formed in an arc-shaped long hole centered on the lower bolt 40a. Thereby, since the height of each pressure reduction roller 41 can be adjusted within the range of the long hole by itself, a fine pressure reduction leveling action suitable for the field can be performed. 4 and 6, the roller width of the pressure-reducing roller 41 is widened so as to straddle the planting groove a and the fertilizing groove b and simultaneously suppress the grooves a and b and the rice paddies around the grooves a and b. Although the structure is exemplified, the present invention may be any as long as the planting groove a is simply crushed and leveled (see FIG. 15). However, the roller width had better degree set wide planting groove a Ru width by the rear so as to be leveled at the same time both right and left shoulders of Uezukemizo a.

The pressure reducing roller 41 shown in FIGS. 4 and 6 is configured as a stepped roller in which the fertilizing groove b side is the large diameter portion 41a and the planting groove a side is the small diameter portion 41b. And the large diameter part 4
1a, the discharge port 11a of the fertilizing nozzle 11 faces the position corresponding to one edge side, and the planting groove a part side is lightly crushed while the fertilizing groove b part side is a single pressure-reducing roller. Since the crushing is strongly suppressed, the degree of crushing becomes accurate, and the planting groove a is leveled to a moderate hardness and height without excessively crushing due to excessive crushing.
The groove refilling action on the part side is reliably performed so that the flow of fertilizer d can be prevented (FIG. 12 showing the compressed state of the stepped roller and FIG. 13 showing the compressed state of the stepless roller as a comparative example). reference). The sensitivity of the float 5 which performs the function of the sensor for automatically controlling the hydraulic pressure (the description is omitted because it is publicly known) is set to be low for non-tilling planting.

The fertilizer applicator F includes an apparatus for fertilizing granular fertilizer as well as liquid fertilizer d. In the case of granular fertilization, a drop guide or the like for granular fertilizer is provided instead of the fertilizer nozzle 11.

In the above configuration, when planting, water is previously poured into the dry rice field, and the work is performed with the rice paddy surface softened to some extent. By the way, PTO clutch lever 2
Operate 3 'to the clutch engaged side to turn on the PTO clutch
While, when it is started to advance the machine body planting unit B, the grooves Setsutai 15 is soil that correspond to the planting position c to force rotates in the arrow direction in each FIG of Sakumizo width Plowed within range. For this reason, the soil in the planting groove a formed by the groove cutting body 15 rises while softening and softening, and becomes slightly higher than the surrounding paddy surface. A fertilizing groove b is formed in the soil on the side of the planting groove a by a subsequent fertilizing groove forming body 36 for forming a fertilizing groove, and the discharge port 11 of the fertilizing nozzle 11 is formed in the fertilizing groove b.
Fertilizer is applied from a. Next, the planting groove a is
After being crushed by the rotation of the ground,
The seedlings f divided and clamped one by one from the seedling mounting table 2 are successively planted therein by the subsequent planting rod 4.

In the meantime, during the above-described series of steps, the grooved body 15
The seedlings f are planted in the planting grooves a, which are plowed and softened to some extent, rise, and are disturbed by the rotation of the soil. The seedling posture will not be disturbed by hitting the uneven portion of the seedling.

Further, since the pressure reducing roller 41 rolls down the weed e at the same time as the leveling action of the planting groove a, the seedling f
Seedling f without being entangled with weed e
Planting is always ensured.

Further, the weed e by the pressure reducing roller 41
, The planting seedlings f can be easily distinguished, so that the state of planting after planting can be easily confirmed, and the treatment for lack of stocks and the like can be easily performed.

[0019]

According to the present invention, since it is configured as described above, after the disturbance of the soil surface of the planting locations by swelling of the soil due Sakumizo in front is put down terrain in suppression roller 41 for each strip the rear of the seedlings f is planted in the planting lever 4 Runode,
Disturbance of the planting posture of the seedlings f is reduced,
41 can be prevented from adversely disturbance such seedlings at planting by weeds so to rolling overwhelmed facedown also weeds e around the planting locations, terms of planting accuracy seedlings is increased further, the state planting after planting Can be easily confirmed.

[Brief description of the drawings]

FIG. 1 is a side view of a riding rice transplanter equipped with the present invention.

FIG. 2 is a side view of a planting groove.

FIG. 3 is a front view of a working groove.

FIG. 4 is a perspective view showing a mounting structure of a working groove body for forming a fertilizing groove and a pressure-reducing roller.

FIG. 5 is a perspective view of a height adjustment unit of the pressure reduction roller.

FIG. 6 is a schematic plan view of a groove portion and a pressure reducing roller portion.

FIG. 7 is an explanatory diagram of an operation of the PTO clutch when the seedling mounting table descends.

FIG. 8 is an explanatory diagram of an operation of the PTO clutch when the seedling mounting table is raised.

FIG. 9 is a side view of the periphery of a PTO shaft showing a rotation preventing structure of the gear case.

FIG. 10 is a plan view of the periphery of a PTO shaft showing a rotation preventing structure of a gear case.

FIG. 11 is a front view of a transmission case.

FIG. 12 is a diagram illustrating the operation of a pressure reducing roller having a wide step.

FIG. 13 is an explanatory diagram of an operation of a wide stepless pressure reduction roller (comparative example with a stepped roller).

FIG. 14 is an operation explanatory view showing a state in which weeds are laid down by the pressure reduction roller.

FIG. 15 is a perspective view of a pressure reducing roller mounting portion.

[Description of Signs] 2 Seedling stand 4 Planting rod 11 Fertilizing nozzle 11a Discharge port 15 Groove cutting body for planting groove forming 16 Pipe stay 23 PTO shaft 24 Universal joint shaft 36 Groove body 37 Mounting bracket 38 Bracket 39 Plate 41 Suppressing roller 43 Arm L Virtual extension line of planting strip a Planting groove c Planting position e Weed f Seedling

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) A01C 5/06 A01B 49/04 A01C 11/00 302

Claims (1)

(57) [Claims] 1. A groove Setsutai 15 for planting groove forming on a virtual extended line L of the strip planting in correspondence in front of Uezuke杆4 each planting rod 4
The provided with, between the planting positions by each Uezuke杆4 with the respective Mizosetsutai 15, each formed in the respective grooves Setsutai 15 Uezukemizo
No-till paddy working machine, characterized in that arranged the crush roller 41 to crush leveled a for each condition.