JP2001128520A - Supporting mechanism of divided seeding stand for rice planting machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a rice planting machine that can be stored and transported with reduced width from left to right by having a seeding stand able to be detached and stored one of its left or right part. SOLUTION: This rice planting machine has partition seeding stands 16D of one or few rows of a seeding stand 16 and detachably set on a main seeding stand 16M wherein plural fitting lugs 41 projected on the back surface of the partition seeding stands and plural fitting dents 43 set on the surface of the main seeding stand make the stand detachable, at least one of the fitting lugs is projected outer than the side surface of the partition seeding stands, a fitting lag 44 is fitted a fitting dent 42 by forcing to round downward and a one-touch holding device 39 is set between the fitting lug and the fitting dent situated bellow the partition seeding stand.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rice transplanter in which a right and left side of a seedling mounting table of a riding rice transplanter is detached and housed, and a left and right width is reduced so that the rice transplanter can be stored or transported.

[0002]

2. Description of the Related Art Conventionally, in a multi-row type rice transplanter having eight or more rows, when transporting, moving, or storing, the seedling mounting table protrudes left and right and laterally, and the seedling mounting table becomes an obstacle. Therefore, a technique is known in which a seedling mounting table and a guide rail are configured to be folded. For example, JP-A-10-
No. 127121. The seedling platform of this technology folds the two-stage seedling platform on the left and right sides so as to be placed on the central seedling platform while moving in parallel, and the left and right guide rails and bumpers fold upward or forward. Was configured as follows.

[0003]

However, since the conventional seedling table folding mechanism is configured to move in parallel by a link mechanism, the mechanism becomes complicated, and the left and right seedling mounting tables are connected to the center seedling mounting side. The structure was such that it was folded and locked each other, so that the number of operation procedures was increased and the operation was troublesome. Furthermore, simply folding the seedling table vibrates or shakes, so it is necessary to lock and fix the seedling table, which is troublesome and troublesome.

[0004]

The problem to be solved by the present invention is as described above. Next, means for solving the problem will be described. That is, in the rice transplanter according to claim 1, wherein one or a plurality of seedling stands on one side of the left and right sides of the seedling stand are detachable on the main seedling stand as divided seedling stands, A plurality of fitting projections protruding from the lower part of the back of the main seedling, and a plurality of fitting recesses are provided on the surface on the main seedling mounting table side to be detachable, and at least one of the fitting projections is divided into seedlings. It is arranged so as to protrude outward from the side surface of the mounting table.

According to a second aspect of the present invention, the fitting protrusion is disposed near a side end of the divided seedling mounting table.

According to a third aspect of the present invention, the fitting projection provided on the upper part of the rear surface of the divided seedling mounting table is biased so as to rotate downward so as to fit into the fitting recess, and the divided seedling table is fitted. A one-touch locking tool is provided between a fitting projection and a fitting recess provided at a lower portion of a seedling mounting table.

[0007]

Next, an embodiment of the present invention will be described. FIG. 1 is an overall side view of a rice transplanter having a seedling mounting table capable of reducing the length in the left-right direction, FIG. 2 is a rear view showing a state where split seedling mounting tables are placed on a main seedling mounting table, and FIG. 4 is a rear view of the seedling rest, FIG. 4 is a side view of the seedling rest, FIG. 5 is a rear view of the divided seedling rest, FIG. 6 is an enlarged rear view of one side of the divided seedling rest, FIG.
8 is a front view of the right fitting pin, FIG. 8 is a plan view of the same, FIG. 9 is a side view of the same, FIG. 10 is a plan view, a front view and a side view of the left fitting pin, and FIG. , FIG. 12 is a side view of the support pipe, FIG. 13 is a side view of the engagement pin, FIG.
15 is a front view of the engine, FIG. 15 is a front view of the mounting portion of the spare seedling mounting table, FIG. 16 is a front view of the mounting support, FIG. 17 is a plan view showing the extension rail folding mechanism, FIG. 18 is a front view of the support rod, FIG. 19 is a plan view of the same.

First, an overall structure of an eight-row riding rice transplanter will be described with reference to FIG. In the riding rice transplanter A, a planting section 4 is disposed at a rear portion of a traveling section 1 via an elevating link mechanism 27. The traveling section 1 has an engine 2 mounted above a front portion of a body frame 3 and a front axle case is disposed at a lower front portion. , And a rear wheel 8 is supported via a rear axle case 7 at the rear. The engine 2 is covered with a bonnet 9, and an output shaft 90 protrudes forward from the engine 2 as shown in FIG. 14, and an output pulley 91 is fixed on the output shaft 90. On the other hand, the transmission shaft is laid in the front-rear direction between the vehicle body frames 3 and 3, and a pulley 92 is fixed to the front end of the transmission shaft, and a belt 93 is provided between the pulley 92 and the output pulley 91. When the belt 93 is wound, the belt 93 is tensioned by a tension pulley 94, and a tension arm pivotally supporting the tension pulley 94 is supported by a tension stay 95. One end of an earth cord 96 is fixed to the tension stay 95, and It is linked to The earth cord 96 is conventionally
Since the split case, which is the housing of the engine 2, was fastened and fixed together with the bolts for fixing, there was a risk of causing oil leakage or getting caught close to the rotating part. Since the stay 96 is fixed, the structure is such that the ground can be reliably taken away from the rotating part regardless of the tightening of the engine body.

A steering handle 14 is disposed on the dashboard 5 at the rear of the bonnet 9.
The vehicle body cover 12 covers both sides and the rear of the vehicle body frame 3, and the seat 13 is disposed at a position behind the steering handle 14.
Both sides of the hood 9 are front steps, the front part of the seat 13 is a middle step, and the left and right sides of the seat 13 and the rear are rear steps. On both sides of the bonnet 9, spare seedling stands 10 are provided.
5. As shown in FIG. 16, the base end of a pillar 10a formed in an L-shape as viewed from the front is fixed to the side surface of the vehicle body frame 3, and support stays 97 and 98 are parallel to the horizontal part of the pillar 10a. The support portion 97a is fixedly mounted on a middle portion of the support stay 97.
And a reinforcing stay 99 is connected and fixed between the supporting portion 97a and the front step frame 11 for supporting the front step 12a on both sides of the bonnet 9. Conventionally,
Since this reinforcing stay is formed in an L-shape and fixedly connected between the upper surface of the front step 12a and the vertical portion of the support post 10a, it is necessary to remove the reinforcing stay when performing maintenance or the like at the lower part of the engine 2 and then remove the front stay. The steps had to be removed and maintenance had to be carried out, and the workability was very poor. In the present embodiment, the reinforcing stay 99 is located below the front step, and when removing the front step, the reinforcing stay is not disturbed without being removed, and the appearance can be improved.

On the side of the driver's seat 13, a traveling speed change lever 30, an auxiliary speed change lever 31 for planting up / down and work traveling speed, and a planting sensitivity adjusting lever are arranged. A clutch pedal 32 and left and right brake pedals are arranged, and an eight-row fertilizer 33 is arranged behind the seat 13.

The planting section 4 comprises a seedling mounting table 16, a planting claw 17, a center float 34, a side float 35, and the like. The lower portion of the seedling mounting table 16 is supported by a lower guide rail 18 and the upper portion of the front surface is slidably reciprocated left and right by an upper guide rail 19. The lower guide rail 18 and the upper guide rail 19 are separated from the planting center case 20 by a frame or the like. Is supported through. Then, the chain case 21 is projected rearward in parallel from the planting center case 20 via a connecting pipe, and a rotary case 22 for rotating in one direction is arranged at the rear of the chain case 21.
A pair of planting claws 17 is arranged on both sides of the two. In this manner, the seedling table 16 is reciprocally slid left and right with forward traveling, and the planting claws 17 are driven in synchronization with the reciprocating motion to cut out one seedling of seedlings so that the planting operation is continuously performed. Make up.

Further, the front of the planting center case 20 is connected to the lifting link mechanism 27 via a rolling fulcrum shaft, and the lifting link mechanism 27 is composed of a top link 25, a lower link 26, and the like. The planting section 4 can be moved up and down by an elevating cylinder 28 arranged below.

Next, the configuration of the seedling mounting table 16 of the present invention will be described. As shown in FIG. 2 to FIG. 5, the seedling mounting table 16 is configured by dividing a two-row seedling mounting table on the right outside in the traveling direction into divided seedling mounting tables 16.
D, the fixed seedling platform for the six rows fixed at the center of the fuselage is defined as a main seedling platform 16M, and the divided seedling platform 16D is configured to be detachable. It is configured such that it can be placed and fitted on the seedling mounting surface side of the mounting table 16M and stored.

An extension rail 70 extending outward from the lower guide rail 18 is turned forward so as to be folded and accommodated. As shown in FIG. The connecting pin 75 is protruded inward from the bottom surface at the inside (left and right center side of the fuselage) end of the extension rail 70, and the shoe is provided on the seedling table. The connecting pin 76 protrudes inward from the square pipe portion 70a on which the is placed. In the working state, the connecting pin 75 is inserted into a pipe (not shown) fixed to the lower guide rail 18, and the connecting pin 76 is inserted into the square pipe 18a of the lower guide rail 18.

A support rod 77 is fixed in front of the mounting portion of the connecting pin 76, and the support rod 7
Reference numeral 7 denotes mounting pipes 77c and 77c for fixing with bolts, a mounting plate 77a for reinforcing the rod, a handle 77b having one end bent in an L shape, and Guide hole 79 of guide plate 79
It is composed of a base end 77d to be inserted into a. The guide plate 79 is formed by bending the plate in a substantially inverted U-shape, and has an arcuate side surface with a guide hole 79a opened in the center. Mounting pipes 79b and 79b are fixed to the outer sides of the open side of the guide plate 79, and bolts are inserted into the mounting pipes 79b and 79b so as to be in front of the square pipe portion 18a of the lower guide rail 18. Attached.

A washer and a spring 81 are externally fitted to the base end 77d of the support rod 77 inserted into the guide hole 79a, and the spring 81 biases the support rod 77 inward. . The mounting plate 77
The base-side end of “a” is bent into a “shi” shape to form a hook 77e.
On the other hand, a locking pin 83 serving as an engaging body is protruded outwardly from the front of the outermost chain case 21 on the main body side of the planting portion 4, and the tip of the locking pin 83 has an L-shape. When the extension rail 70 is folded, the hook portion 77e can be locked.

Conventionally, the handle 77b is hooked on the locking pin 83. However, when the operator holds the handle 77b and hooks on the locking pin 83, he or she can pinch a finger between them, or hold the handle 77b in the locking space. Due to the large size, the extension rail 70 may wobble when locked, and may interfere with vibration or other components. In this embodiment, the hook portion 77e
Is a flat plate bent, so that it linearly hits the locking pin 83 and can be locked without shaking. The side bumpers are slid inward so that they can be stored.

The seedling mounting table 16 is provided with ribs 16a, 16a,... On the upper surface in the front-rear direction on the right and left sides of each row so that the seedling mat can be guided by the ribs 16a, 16a,. As shown in FIG. 3, handles 40L and 40R, which are gripping portions, are provided in the middle of the ribs 16a on both right and left sides of the divided seedling mounting table 16D.
The handle 40L protrudes rearward and upward, and the handle 40R is disposed protruding sideways. The handle 40L ・ 4
The arrangement positions of the 0R seedling table 16 in the vertical direction are different in height, with the outer side (the right side 40R in this embodiment) being higher and the inner side being lower.

In FIGS. 3 and 4, the main seedling table 16
The left and right ribs 16 are provided on M and the divided seedling mounting table 16D, respectively.
Seedling mat holder 46 and seedling stopper 47 between a and 16a
Is arranged. The seedling mat retainer 46 includes a vertical retainer bar 46a, a lateral support bar 46b, and a support shaft 46c. The vertical retainer bar 46a is formed in a substantially inverted V-shape when viewed from the side, and the lower base is fixed to the support shaft 46c. In the main seedling mounting table 16M, both sides of the support shaft 46c are provided with stopper stays 50 fixed on the first left rib 16a, the third right rib 16a, and the sixth right rib 16a from the left. 50 and 50 are rotatably supported. In the divided seedling mounting table 16D, the support shaft 46c
Are rotatably supported by stopper stays 50, 50 fixed on the ribs 16a on both sides. The upper end of the vertical holding bar 46a is fixed to a horizontal support bar 46b, and the horizontal support bar 46b is formed in a substantially U shape in plan view, and both ends thereof are located above the rib 16a to which the stopper stay 50 is fixed. Can be engaged with the height adjustment stay 51 disposed at the position.

As shown in FIG. 5 and FIG. 6, fitting pins 41L and 41R as fitting protrusions are provided at lower middle portions on the right and left sides on the back (front) side of the divided seedling mounting table 16D. It is protruded toward and is inserted into support pipes 43L and 43R, which will be fitting recesses provided on a main seedling mounting table 16M, which will be described later, so that it can be mounted and fixed. The fitting pin 41L
41R, as shown in FIG. 7 to FIG.
The support plates 36 and 36 are fixed to the upper surface of the support pipes 43L and 43R. One end of the support plate 36 is bent into an L-shape to form a hook portion 36a, and the hook portion 36a can be locked by a one-touch locking member 39 described later.

As shown in FIG. 10, the upper part of the left fitting pin 41L is formed on the upper surface of the support plate 36 in a plan view.
A reinforcing rail 38 is fixed to the lower part of a mounting plate 37L obtained by bending a plate into a letter shape, and bolt holes 37a are opened on the left and right surfaces of the mounting plate 37L and fixed to the back surface of the rib 16a of the seedling mounting table 16. And the reinforcing plate 48L. As shown in FIG. 7, the upper part of the right fitting pin 41R is located on the upper surface of the support plate 36 and the mounting plate 37R.
The mounting plate 37R is fixed to the lower part of one end, and the plate is bent into an L shape in a plan view and an inverted L shape in a side view to increase the strength, and the other end of the mounting plate 37R is directed inward (left side). ) And bolt holes 37a
An opening 37a is fixed to a reinforcing rail 38 and a reinforcing plate 48R fixed to the back surface of the rib 16a of the seedling mounting table 16. As shown in FIG. 9, the height of the protruding portions 48a and 48b of the reinforcing plate 48R differs from each other in a cross-sectional view.
R can be fixed at the same height.

In such a configuration, the left fitting pin 41L is located on the back side of the left end rib, and
The right fitting pin 41R protrudes outward from the end of the divided seedling mounting table 16D, but does not protrude greatly near the end. Have been placed. Therefore, the divided seedling mounting table 16D is removed, and the fitting pins 41L and 41R are connected to the support pipe 43.
When fitting to the L.43R, since the fitting pin 41R is located outside the right end of the divided seedling mounting table 16D, the fitting position between the fitting pin 41R and the support pipe 43R can be clearly seen and understood. This has made it easier to put them on.

Next, the support pipes 43L and 43R into which the fitting pins 41L and 41R are inserted will be described. Since the fitting pins 41L and 41R are symmetrical, only the left side will be described. As shown in FIGS. 11 and 12, a steel pipe or the like is bent in a substantially crank shape in a side view, and each base is fixed to a mounting plate 52 configured in a U-shape in a plan view, and the mounting plate 52 is fixed to the back surface. Shafts 52a
, The fixing shafts 52a are inserted into the ribs 16a, the mounting plate 52 is fitted, and the mounting plate 52 is fixed with bolts from the back side. As shown in FIG. 3, the support pipe 43L is fixed on the left rib 16a of the fourth row of the main seedling mounting table 16M from the left as shown in FIG.
3R is fixed on the right rib 16a of the fifth row from the left,
It is configured to open outward.

The upper surface (front surface) of the oblique side of the support pipe 43
And a reinforcing plate 43a on the upper surface of the mounting plate 52.
Are fixed in the vertical direction (radial direction of the support pipe) by welding or the like to increase rigidity. Attachment stays 43b, 43b are protruded laterally from the side surface facing the middle of the support pipes 43L, 43R, and a connecting rod 49 is provided between the attachment stays 43b, 43b as shown in FIG.
Are laterally connected to increase the strength of the support pipes 43L and 43R in the left-right direction. The lower portion of the support pipe 43 is bent into an L-shape, the lower surface is fixed to the mounting plate 52 by welding or the like, and the lower end is a seedling mat holder 4.
6 are fixed to each other by welding or the like so as to be in contact with a mounting pipe 53 into which the end of the tube 6 is inserted, so that they are mutually reinforced. And
The stopper stay 50 is fixed on the lower part of the mounting plate 52 so that the number of mounting steps can be reduced.

The upper portions of the support pipes 43L and 43R are bent into an L shape to form insertion portions 43c for inserting the fitting pins 41L and 41R.
c and 43c are formed in a funnel shape to form fitting pins 41L and 41R.
Is easy to insert. Then, the insertion portions 43c and 43
The attachment surfaces 43d, 43d are formed on the outer surface of the c, and the one-touch locking tools 39, 39 are respectively fixed. When the divided seedling mounting table 16D is placed, the hook portions 36a, 36a are locked to be firmly. It can be fixed.

On the other hand, the front upper part of the divided seedling mounting table 16D, that is,
An engaging hole 42 serving as a fitting recess is opened in the upper surface of the upper right and left central portion of the upper guide rail 19 provided on the upper side on the back side (back side) of the central rib, and is provided on the main seedling mounting table 16M. The engaging pin 44 can be engaged and fixed. As shown in FIG. 3, the engaging pin 44 is rotatably disposed above the rib 16a on the right side of the fourth row from the left of the main seedling mounting table 16M. As shown in FIG. 13, reference numeral 44 denotes an L-shape when viewed from the side, and the tip is configured to be pointed to facilitate engagement with the engagement hole 42, and a spring 57 is fitted to the rotation base. The engagement pin 44 is biased to rotate downward. In this way, the engagement pin 44 is rotated in the direction of engagement with the engagement hole 42, so that the retaining pin and the like are abolished, so that it is difficult to remove. In addition, it is stably supported as a three-point support of the engaging pin 44 and the fitting pins 41L and 41R, so that the storing operation for narrowing the width can be easily performed, and the weight of the supporting portion is simple because the configuration thereof is simple. It can be designed and stored easily.

[0027]

As described above, the present invention has the following advantages. That is, as in claim 1,
In a rice transplanter in which one or a plurality of seedling stands on one side of the left and right sides of the seedling stand are detachable on the main seedling stand as divided seedling stands, a plurality of fittings are provided at the lower rear portion on the divided seedling stand side. Projecting the projections, a plurality of fitting recesses are provided on the surface of the main seedling mounting table side to be detachable, and at least one of the fitting projections is located outward from the side surface of the divided seedling mounting table. The protruding arrangement allows the fitting portion to be seen by the worker at the time of fitting without being hidden by the divided seedling mounting table, which facilitates the fitting and improves operability. Then, if one can be fitted, the other is arranged correspondingly, so that they can be fitted at the same time, and the operability for placing the divided seedling mounting table could be improved.

Further, since the fitting protrusion is arranged near the side end of the divided seedling mounting table, the protrusion of the fitting protrusion can be made small, and it is possible to prevent the fitting and the like from being caught during the operation. Also, the operability is not degraded without leaving the operator far away.

[0029] According to a third aspect of the present invention, the fitting protrusion provided on the upper part of the rear surface of the divided seedling mounting table is urged so as to rotate downward so as to fit into the fitting concave portion. Since a one-touch locking device is provided between the fitting projection and the fitting recess provided at the lower part of the seedling mounting base, the work of mounting the divided seedling mounting base on the main seedling mounting base and locking it requires the use of pins and bolts. It can be easily fixed without using it, and play and the like can be reduced. Also,
The lock configuration is simplified and no parts are lost.

[Brief description of the drawings]

FIG. 1 is an overall side view of a rice transplanter having a seedling mounting table whose length in the left-right direction can be reduced.

FIG. 2 is a rear view showing a state where a divided seedling mounting table is placed on a main seedling mounting table and stored.

FIG. 3 is a rear view of the seedling mounting table of the present invention.

FIG. 4 is a side view of the seedling mounting table.

FIG. 5 is a rear view of the divided seedling mounting table.

FIG. 6 is an enlarged rear view of one side of the divided seedling mounting table.

FIG. 7 is a front view of a right fitting pin.

FIG. 8 is a plan view of the same.

FIG. 9 is a side view of the same.

FIG. 10 is a plan view, a front view, and a side view of the left fitting pin.

FIG. 11 is a rear view of the support pipe mounting portion.

FIG. 12 is a side view of a support pipe.

FIG. 13 is a side view of the engagement pin.

FIG. 14 is a front view of the engine.

FIG. 15 is a front view of a mounting portion of the spare seedling mounting table.

FIG. 16 is a front view of a mounting column.

FIG. 17 is a plan view showing an extension rail folding mechanism.

FIG. 18 is a front view of a support rod.

FIG. 19 is a side view of the same plan view seedling mounting table.

[Explanation of symbols]

 16 seedling mounting table 16D divided seedling mounting table 16M main seedling mounting table 39 One-touch locking tool 41L / 41R fitting pin 43L / 43R support pipe 44 engaging pin

 ──────────────────────────────────────────────────続 き Continuing from the front page (72) Inventor Hideki Matsuoka 1-32 Chaya-cho, Kita-ku, Osaka, Osaka Inside Yanmar Agricultural Machinery Co., Ltd. (72) Inventor Satoshi Maekawa 1-32, Chaya-cho, Kita-ku, Osaka, Osaka No. F-term in Yanmar Agricultural Machinery Co., Ltd. (reference) 2B041 AA02 AB05 AC06 BA08 2B064 AA05 AA07 AB01 AC01 BA10 DA03 DA11 DA14 DA15 DA21 EB05 EB10

Claims (3)

[Claims] 1. A rice transplanter in which one or a plurality of seedling platforms on one side of a seedling platform can be detachably mounted on a main seedling platform as a divided seedling platform, and a lower rear portion on the split seedling platform side. A plurality of fitting projections projecting therefrom, a plurality of fitting recesses are provided on the surface of the main seedling mounting table side so as to be detachable, and at least one of the fitting projections is a split seedling mounting table. A split seedling support structure for a rice transplanter characterized by being projected outward from the side. 2. The split seedling mounting support structure for a rice transplanter according to claim 1, wherein the fitting projection is disposed near a side end of the split seedling mounting. 3. A split projection provided on an upper portion of a rear surface of the divided seedling mounting table is urged so as to rotate downward so as to be fitted into a fitting recess. The split seedling support structure for a rice transplanter according to claim 1, wherein a one-touch locking tool is provided between the provided fitting projection and the fitting recess.