JPH08336318A - Long guide for rice transplanter - Google Patents

Abstract

PURPOSE: To provide a long guide for a rice transplanter free from sticking of mud or soil and improved in planting operating efficiency by regulating the length of a locus in the vertical directions protruding from the front edge to larger than half of the vertical length of the front edge of a guide part. CONSTITUTION: This long guide for a rice transplanter comprises protruding a rotating locus Z of the tips of the planting pawls 48 forward from the front edge 3a of the guide part 3 of the long guide G to the front when passing the planting pawls 48 through the long guide G and regulating the length of the locus in the vertical directions protruding from the front edge 3a to larger than half of the vertical length of the front edge 3a of the guide part 3 in a constitution for opening a seedling takeout port 44a under a seedling-carrying platform 1 of the rice transplanter, extending the long guide G to the lower part of the seedling takeout port 44a, cutting out a seedling with the planting pawls 48, guiding the seedling with the long guide G and planting the seedling in a field.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rice transplanter, which is a long guide for extending a seedling cut out from a seedling placing table downward in a locus of a planting nail so that the seedling is accurately planted in a field. Regarding the structure of the guide.

[0002]

2. Description of the Related Art Conventionally, two guide parts composed of leaf springs are extended downward from both sides of a seedling opening that opens in the center of each guide rail for supporting a seedling mounting table. In order to prevent the seedlings cut by the attached nails from spilling during transportation to the field, the left and right sides are held by long guides. Further, the shape was a shape along the rotation locus of the tip end portion of the planting claw that holds the cut seedling, and was an arc shape that completely wraps the locus in a side view. Therefore, when the cut seedlings were transported, they did not extend beyond the long guide, and the root completely passed through the long guide.

[0003]

However, in the prior art, in the planting work using the planting claw, if the roots of the cut seedlings completely pass through the long guide, the roots of the roots are soil. , Mud, etc. were contained, and soil and mud sometimes adhered to the inside of the guide part before the part was guided to the field. The attached soil and mud tend to remain in the vicinity of the rotation track of the tip of the planting claw, so when the next planting claw grabs the seedling and passes the long guide, it is blocked by the soil and mud that adhered. As a result, the posture of the seedlings grasped by the planting claws may be disrupted, and if they were planted in the field as they were, they would become floating seedlings. Further, there are problems that mud adheres to the leaves and the seedlings fall down, and that the seedlings are pulled out from the planting claws by being caught in the soil or mud.

[0004]

The problems to be solved by the present invention are as described above. Next, the means for solving the problems will be described. That is, a structure in which a seedling take-out opening is formed in the lower part of the seedling placing table of the rice transplanter, a long guide is extended downward from the seedling take-out port, the seedlings are cut off by the planting claws and guided by the long guide to be planted in the field. In the above, when the planting claw passes through the long guide, the rotation locus of the tip of the planting claw projects forward from the front edge part of the guide part of the long guide, and projects from the front edge part. The length of the locus in the vertical direction was set to be at least half the vertical length of the front edge of the guide portion.

[0005]

According to the present invention, by using the above-mentioned means, the tip of the planting claw passes forward of the front edge of the guide portion, and excess mud drops in the section to cause mud to enter the guide portion. No dirt or soil will adhere. Since there is no extraneous matter in this guide part, the posture of grasping and transporting the seedlings is not disturbed, and the seedlings are transported downward and in a stable posture for accurate planting.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the configuration of the present invention will be described with reference to the accompanying drawings. FIG. 1 is a side view of a rice transplanter adopting the present invention, FIG. 2 is a right side view of a planted mission case, FIG. 3 is a front sectional view showing a drive system in the planted mission case, and FIG. FIG. 5 is a front view showing the connecting structure of the arm and the sliding member receiver, and FIG. 5 is a side view showing the shape of the long guide of the present invention.

The construction of the riding rice transplanter will be described with reference to FIGS. 1 and 2. Main frame 50 to be installed in front and back
An engine E for supporting the front wheels FW and the rear wheels RW, which drives the front wheels FW and the rear wheels RW, is arranged on the front part of the traveling vehicle body A, and is mounted on the hood that houses the engine E. A display part 51 including a display panel and a handle are provided, a driver seat 52 is provided on the rear part, and a hydraulic cylinder C is arranged below the driver seat 52. An elevating link L is projected from the rear part of the machine body and lifted by the hydraulic cylinder C. It is possible. A hitch 40 is attached to the rear portion of the elevating link L, and the planting mission case M of the planting section U is swingably attached to the hitch 40. Further, power is transmitted from the PTO shaft of the traveling vehicle body A to the input shaft 42 of the planted mission case M via the universal joint 41. Also, the planting unit U
A float 43 is hung up and down so that it can be moved up and down.

At the upper part of the planting section U, the seedling mounting table 1 is mounted on the guide rail 44 so as to be slidable from side to side by receiving power from the planting mission case M. The seedling stand 1
Is arranged so as to be low after the side view,
As shown in FIG. 2, a vertical feed belt 45, which is wound around vertical feed rollers 46, 46 ...
45 ... are provided. The seedling mat placed on the seedling placing table 1 is moved downward by the conveyance drive of the vertical feed belt 45.

Further, a plurality of planting transmission cases 47 are arranged rearward of the planting transmission case M in parallel with each other in the front-rear direction, and the planting claws 4 are provided at the rear portion of each planting transmission case 47.
A rotary case 49 including 8 is pivotally supported.
Therefore, due to the driving force from the planted mission case M,
The rotary case 49 rotates, and the planting claw 48 moves to a seedling port 44a, which will be described later, which is opened in the seedling stand rail 44, picks up a certain amount of seedlings, and conveys the seedlings downward to be planted in a field.

Next, the structure of the planted mission case M will be described with reference to FIGS. 2, 3 and 5. In the planted mission case M, the input shaft 42 is transmitted to the transmission shaft 28 via a bevel gear, and the planted pawl drive shaft 30 is driven by the chain transmission from the transmission shaft 28. Power is transmitted to the transmission case input shaft 32 and the planting pawl transmission shaft 33 in the planting transmission case 47 having the front end portion fixed to the planting transmission case M, and the planting pawl transmission shaft in each planting transmission case 47. 33 is provided with a sprocket, a chain 35 is wound around a sprocket provided with a planted drive shaft 34, the planted drive shaft 34 is driven, and the rotary case 49 is rotationally driven.
The planting claw 48 is also driven.

On the other hand, the speed change shaft 26 is transmitted from the transmission shaft 28 by the engagement of the eccentric gears 28a and 26b. The speed change shaft 26 is loosely fitted with the speed change gears 26a, 26a, and
5 meshes with the variable speed driven gears 25a, 25a that are fixedly installed on the vehicle. Further, a shifter 27 slidably attached to the speed change shaft 26 is joined to one of the speed change gears 26a, 26a, and is arbitrarily changed in speed to drive the lateral feed shaft 25 for speed change.

In the transmission case M, the vertical feed shaft 24 is moved by the chain transmission from the speed change shaft 26.
Is driven, and the vertical feed cam 24a
24a is provided so as to project, and the vertical feed cams 24a, 24a are arranged so as to be able to contact the cam 16 provided in the lower part of the seedling placing table 1, and the vertical feed roller 46 is driven intermittently. are doing.

Further, as shown in FIGS. 2 to 4, the transverse feed shaft 25 is provided with a groove 25b for sliding a sliding member.
The slide receiver 23 is loosely fitted to the lateral feed shaft 25, and the groove 25
The sliding piece 23a attached to the sliding piece receiver 23 is fitted in b, and as the transverse feed shaft 25 rotates, the sliding piece 23a slides in the groove 25b, and the sliding piece receiving 23 Is adapted to reciprocally slide on the transverse feed shaft 25. Further, the slipper receptacle 23 projects the connecting portion 22 rearward. The connecting portion 22 has a vertical contact portion 22 in a side view.
A right-angled portion formed of a and the horizontal contact portion 22b is formed.
A fitting bolt 21 is screwed to the connecting portion 22 in the left-right direction, and the lock nut 20 allows the fixing position of the fitting bolt 21 to be arbitrarily changed.

On the other hand, on the front surface (lower surface) of the seedling mounting table 1,
Reinforcement rail 1 in a U-shape when viewed from the side at the center of the top and bottom
9 is fixedly installed, and a seedling stand rail 15 that fits with the guide rail 44 is laterally provided in the lower part of the front surface of the seedling stand 1. A plurality of guide members 18 are vertically arranged between the seedling stand rail 15 and the reinforcing rail 19. The seedling feed belt 45 is wound around the vertical feed rollers 46 and 46 pivotally supported between the adjacent guide members 18, and reinforcement is provided between the vertical feed rollers 46 and 46 arranged vertically. The material 17 is provided horizontally.

Then, the left and right fixing plates 10a are screwed into the reinforcing rails 19 by using bolts to fix the fixing plates 10a.
The upper fixing portion 10b is fixed further forward, and the reinforcing member 17
A lower fixing portion 10c is provided so as to protrude further forward, and the lower fixing portion 1 is provided.
0c and the upper fixing portion 10b, the bottom surface 10d of the connecting arm 10 having a U-shape in plan view is fixed, and the opening surface is arranged forward. The connecting portion 22 is provided in the opening of the connecting arm 10.
The mating bolt 21 of is fitted as shown in FIG.
The rotation of 5 causes the seedling stand 1 to reciprocate left and right via the connecting arm 10.

Inside the open surface of the connecting arm 10, a rotation preventing plate 11 is vertically projected from the bottom surface 10d at a substantially central position in the vertical direction, and the rotation preventing plate 11 is connected to the rotation preventing plate 11. The left half is formed in an open state while the right half is protruded between the left and right side surfaces. The fitting bolt 21 is inserted into the connecting arm 10 configured as described above, the vertical contact portion 22a contacts the bottom surface 10d, and the horizontal contact portion 22b contacts the rotation prevention plate 11. By fitting as shown in FIG. 2, the sliding element receiver 23 is prevented from rotating due to the rotation of the lateral feed shaft 25. Further, when the fitting bolt 21 is fitted to the connecting arm 10, a spanner or the like is inserted by utilizing the left half of the connecting arm 10 where the rotation prevention plate 11 is not provided as described above. By loosening the lock nut 20,
The fitting bolt 21 is rotated to shift the connecting position so that the lateral position of the seedling placing table 1 can be easily adjusted.

Next, the structure of the long guide G of the present invention will be described with reference to FIG. The long guide G is composed of an upper fixed base portion 2 and a lower left and right symmetrical guide portion 3.3. The fixed base 2 has an opening having the same shape in alignment with a seedling intake 44a opening at the central position of each row of the guide rail 44, and is formed along the lower surface of the guide rail 44. . The guide part 3.3
Is a leaf spring extending downward from the fixed base 2 along the left and right side surfaces of the seedling intake 44a, and the guide portion 3
・ An elastic plate made of rubber or the like is fixed to the inner surfaces facing each other. Then, the fixed base 2 is fixed to the guide rail 44 using bolts and nuts 5 and 6, and the seedlings cut from the seedling intake 44a by the planting claws 48 are guided by the guides 3 and 3. There is. Furthermore, the bolt
The parallel plates 4a are screwed into the nuts 5 and 6, and the parallel plates 4b project obliquely downward along the lower surface of the fixed base portion 2, and the abutting portion 4a having a triangular shape in a side view is forwarded at the lower portion. It is protruding. The contact portion 4a holds down the guide portion 2a so as not to open outward.

Next, as shown in FIG. 5, the guide portion 3 of the long guide G according to the present invention is formed in an arc shape having a large radius of curvature in a side view, and the planting claw 48 is a seedling. Most of the portion that grabs and conveys downward is wrapped with the guide portion 3. However, the locus Z of the tip of the planting claw 48 is provided with a portion projecting forward from the guide portion 3. That is, the front edge portion 3a of the guide portion 3 and the locus Z
The intersection point has an upper position x and a lower position y, and the length in the front-rear direction in which the locus Z projects from the guide portion 3 is set to be short, but the vertical length in which the planting claw 48 passes through the guide portion 3 is set. In addition, the length projecting from the front edge portion 3a is longer than the length of the locus Z in the guide portion 3.

Therefore, when the planting claw 48 cuts the seedling from the seedling taking port 44a and passes through the guide portion 3, the planting claw 4 is cut.
The locus Z of the tip of 8 immediately protrudes from the upper position x as soon as it enters the guide portion 3, and descends substantially parallel to the front edge portion 3a,
The guide portion 3 is again entered from the lower position y. This planting nail 4
Excess mud drops when the tip of 8 projects from the guide portion 3, and even if mud or soil adheres to the inside of the guide portion 3, it is scraped off by the planting claw 48 to remove the adhered matter. I am trying. Further, the lower end of the long guide G is projected to a position close to the planting surface in the field to guide it for a long time to prevent the seedlings from falling off the planting claw 48.

[0020]

The present invention, having the above-mentioned configuration, has the following effects. That is, when the tip of the planting claw protrudes from the guide part of the long guide, excess mud will fall off, and mud will not adhere to the inside of the long guide. Even if the planting claws adhere, they are scraped off by the planting claws, remove the deposits, and even if the planting claws that grabbed the next seedling rotate, there is no mud or dirt, so there is no disturbing posture, and As the seedlings are no longer carried around, planting work can be carried out reliably in the field. Also, by increasing the distance that the locus of the tip of the planting claw protrudes from the guide part, the adhesion of mud and soil is eliminated,
The seedlings cut off from the seedling stand will not come off due to the adhered soil, and there will be no stumps, and planting will be ensured, and workability can be improved.

[Brief description of drawings]

FIG. 1 is a side view of a rice transplanter adopting the present invention.

FIG. 2 is a right side view of a planted mission case.

FIG. 3 is a front sectional view showing a drive system in a planted mission case.

FIG. 4 is a front view showing a connecting structure of a connecting arm of a seedling table and a sliding plate receiver.

FIG. 5 is a side view showing the shape of the long guide of the present invention.

[Explanation of symbols]

 G Long guide Z Trajectory 1 Seedling stand 3.3 Guide part 3a Leading edge 44 Guide rail 44a Seedling intake 47 Rotary case 48 Planting claw x Upper position y Lower position

Claims (1)

[Claims] 1. A seedling take-out opening is formed in a lower part of a seedling placing table of a rice transplanter, a long guide is extended below the seedling take-out port, the seedlings are cut off by a planting claw, and the long guide is used to guide the field. In the configuration to be planted in, the rotation locus of the tip of the planting claw is configured to project forward from the front edge part of the guide part of the long guide when the planting claw passes through the long guide. The length of the vertical trajectory that protrudes more
A long guide for rice transplanters, which is characterized in that the vertical length of the front edge of the guide is half or more.