JPH10248315A - Folding configuration of rice transplanter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To attain configuration by which left and right width is efficiently reduced in a rice transplanter where a planting part for planting is arranged in the rear part of a running vehicle and a fertilizing part is arranged in the front part of a seedling placing stand in the planting part. SOLUTION: The seedling placing stand is divided into plural lines of fixed side seedling stands at a machine body center side and the plural lines of division seedling placing stands at both left and right sides, a fixed side seedling placing stand rear surface is connected to a division seedling placing rear surface by folding mechanism, the division seedling placing stand is folded to the upper part of the fixed side seedling placing stand without interference with a fertilizing hose and wheels, the base part pipe 71 of a side bumper 70 is fixedly provided in a side part form a planting part side part, the stay 77 of a rotary pipe 73 is journalled in the base part pipe 71, a circular arc-shaped guide groove and a stop hole 77b are piercedly provided in the stay 77, a guide pin 75 with a step, which is engaged with the base part pipe with looseness, is positioned in the stop hole or stop hole 77b and a rock state and a release state are changed-over.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rice transplanter having a seedling table and a planting claw for continuously planting seedlings, and a mechanism for reducing the entire width of the seedling table and side bumpers in the right and left directions. To a rice transplanter equipped with

[0002]

2. Description of the Related Art Conventionally, in a multi-row seedling mounting table, means for reducing the entire left and right width of the seedling mounting table by folding a single-row seedling mounting table at the outermost left and right ends approximately 90 ° in the forward direction is known. It is known.
In addition, the lower rail on which the lower part of the seedling table is slidably mounted and the right and left ends of a side bumper for protecting the lower part of the seedling table are pivotally supported, and furthermore, among a plurality of fertilizer tanks. The tanks at the left and right ends were rotatably supported rearward, and the width of the body was narrowed.

[0003]

However, in the case where the conventional one-row outermost end portion seedling mounting table is folded forward,
The lateral width of the seedling mounting table is wider than the vehicle width of the running vehicle body, and it was necessary to further reduce the width. For this purpose, a technique has been proposed to shorten the left and right widths by folding a plurality of seedling stands on the left and right sides of the multi-row seedling stand, but a fertilizer applicator and a rear wheel are provided in front of the seedling stand. It was arranged so that it could not fold forward a plurality of seedling mounting stands on both the left and right sides. In addition, the side bumper that turns the end part to narrow the left and right width is restricted by inserting a lock pin, the position of the side bumper is fixed by inserting a snap pin, and the side bumper end In order to rotate, it is necessary to remove two pins, and these pins are located in the lower part of the front of the seedling table where it is difficult to operate, and it is difficult to remove and insert these pins. Was. Furthermore, in the configuration in which the pin can be pulled out, there is a possibility that the pin may fall off due to vibration during work and be lost.

[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 a riding type rice transplanter in which a planting section for planting a plurality of rows is arranged at a rear portion of a traveling vehicle and a fertilizing section is arranged in front of a seedling mounting table of the planting section, the seedling mounting table is located at the center of the machine body. Divide the fixed-side seedling platform of the multiple rows and the multiple rows at the left and right ends into divided seedling platforms, and connect the rear surface of the fixed-side seedling platform and the rear surface of the divided seedling platform with a folding mechanism to interfere with fertilizing hoses and wheels. Instead, the divided seedling mounting table is folded over the fixed seedling mounting table. In addition, there is a seedling mounting device that folds a plurality of strips at both left and right ends of the seedling mounting table toward the center of the machine using a folding mechanism, protrudes a side bumper from the side of the planting part side, and bends a middle part of the side bumper. In a rice transplanter capable of pivoting as much as possible and narrowing the lateral width of the machine body, the side bumper is divided into a fixed-side base pipe and a turning-side turning pipe, and a stay of the turning pipe is pivotally connected to the base pipe. An arc-shaped guide groove and a stop hole having a diameter larger than the groove width are bored on the stay, and a stepped guide pin slidably and loosely fitted into the base pipe engages the stop hole. When the guide pin is slid and the stepped portion of the guide pin is positioned in the stop hole, the lock is released and the rotary pipe is rotated.

[0005]

Next, an embodiment of the present invention will be described. 1 is an overall side view of a rice transplanter having a seedling table folding mechanism, FIG. 2 is a plan view of the same, FIG. 3 is a view showing a folded state of the seedling table, FIG. 4 is a plan view of the same, and FIG. FIG. 6 is a plan view, partly in cross-section, FIG. 7 is also a rear view, partly in cross-section, and FIG. 8 is connected to a movable fertilizer hopper during operation. FIG. 9 is a plan view showing the wiring of the harness when it is folded on the movable fertilizer application hopper.

[0006] First, an overall configuration of a riding rice transplanter will be described with reference to Figs. An engine 2 is mounted above a front portion of a body frame 3 of a traveling vehicle 1 on which an operator or the like rides, and a front wheel 6 is supported in front of a transmission case 4 via a front axle case 5.
A rear axle case 7 is connected to a rear portion of the vehicle, and the rear wheel 8 is supported by the rear axle case 7. The spare seedling mounting tables 10 and 10 are provided on both sides of the bonnet 9 covering the engine 2.
The transmission case 4 and the like are covered by a vehicle body cover 12 on which an operator or the like rides via a step 11, and a driver's seat 13 is mounted on the vehicle body cover 12,
A steering handle 14 is provided at the rear of the hood 9 in front of the driver's seat 13.

The planting section 15 is composed of a seedling mounting table 16 for eight-row planting, a plurality of planting claws 17 and the like. The rotary case 21 is rotatably supported on the planting case 20 via a back and forth slidable, and the rotary case 21 that rotates at a constant speed in one direction is rotatable on the planting case 20. A pair of claw cases 22 are arranged at symmetrical positions, and planting claws 17 are fixedly attached to the tips of the claw cases 22.
Further, a claw case 22.2 is provided on the front upper portion of the seedling mounting table 16.
2 and a unit clutch lever 91 for stopping the drive to the planting claws 17 and 17 to stop the stud is fixedly provided.

Further, a supporting frame 24 is provided at the front of the planting case 20 via a rolling fulcrum shaft 23, and the supporting frame 24 is provided at the rear of the traveling vehicle 1 via a link mechanism 27 including a top link 25 and a lower link 26. And a lifting cylinder 28 for raising and lowering the planting section 15 via the link mechanism 27 is connected to the lower link 26. Then, at the same time as the front wheels 6.6 and the rear wheels 8.8 are driven to move, the seedlings for one plant are taken out from the seedling table 16 which can reciprocate slidably to the left and right by planting claws 17.
It is configured to perform seedling planting work continuously.

A side bumper 70 projects laterally from the outer side surface of the planting case 20 at the left and right ends, and the rear end of the side bumper 70 is bent backward to protect the lower part of the seedling mounting table 16. ing. Further, in the driving section in which the driver's seat 13 and the like are installed, a traveling speed change lever 29, an auxiliary speed change lever 30 for planting elevating and working traveling speed change, a planting sensitivity adjusting lever 31, a main clutch pedal 32, and left and right brake pedals 33 are provided. A leveling center float 34 and a leveling side float 35 are disposed below the planting section 15, and a fertilizing section 36 for eight sections is provided behind the driver's seat 13.
Are arranged.

Each of the eight fertilizer application hoppers of the fertilizer application section 36 is arranged in series in the left-right direction, and has six fixed fertilizer application hoppers 85, 85,. And a movable fertilizer application hopper 85 '. As shown in FIGS. 8 and 9, an arm 86 is fixed to the lower part of the inner side surface of the movable fertilizer hopper 85 ′, and the inner end of the arm 86 protrudes inward in the left-right direction. An arm 86 is pivotally supported by a pivot pin 87 pivotally supported by a lower portion of the outer fixed fertilizer hopper 85, and the movable fertilizer hopper 85 'is movable rearward integrally with the arm 86 around the pivot pin 87. Is rotated.

A lever 90 for operating a fertilizer application clutch (not shown) of the movable fertilizer application hopper 85 'is disposed on the front surface of the movable fertilizer application hopper 85', and is provided with a unit clutch lever 91 for stopping the line. A unit clutch wire 92 that is linked to the operation is detachably connected, and disconnects the unit clutch wire 92 when the movable fertilizer hopper 85 'is rotated backward.

Also, inside each of the fertilizer application hoppers 85, a residual amount detecting sensor S for detecting the residual amount of the stored fertilizer is arranged. The harness 88 connected to the remaining amount detection sensor S is wired in front of the fertilizer application section 36, and the harness 88 'connected to the movable fertilizer application hopper 85' is wired so as to bypass one end in the moving direction of the movable fertilizer hopper 85 '. Have been. .., A hook 89 is fixedly provided outside the lower portion of the fixed fertilizer application hopper 85 at the extreme end of the fixed fertilizer application hopper 85, and projects laterally from the side surface of the fixed fertilizer application hopper 85 at the extreme end. In the hook 89, a harness 88 'is passed rearward below the fixed fertilizer application hopper 85 from the front of the fixed fertilizer application hopper 85 disposed at the end so that the middle part of the harness 88' is locked, The middle part of the harness 88 'is locked by the hook 89, and the tip of the harness 88' is extended forward and connected to the remaining amount detection sensor S in the movable fertilizer hopper 85 '.

Therefore, when the movable fertilizer application hopper 85 'is rotated rearward, the tip side moves rearward with the rotation of the movable fertilizer application hopper 85' from the middle of the harness 88 'hooked on the hook 89. Therefore, it is not necessary to make the harness 88 'slack in advance.

Next, a description will be given of a configuration in which a plurality of rows on both ends of the multi-row seedling mounting table 16 are folded. The seedling table 16 is shown in FIG.
As shown in FIG. 4, each of the two outermost seedling stands at the left and right ends is divided into divided seedling stands 16a and 16a, and the two seedling stands at the center of the body of the fixed-side seedling stand are positioned at the center. The seedling mounting table 16b, the one-row seedling mounting tables disposed on both sides thereof are referred to as side seedling mounting tables 16c and 16c, and a parallel folding mechanism 37 is provided above the side seedling mounting tables 16c and 16c. Seedling table 16a
16a and the side seedling platforms 16c are connected via a parallel folding mechanism 37 so that the divided seedling platforms 16a can be folded substantially parallel above the central seedling platform 16b.

The folding mechanism 37 will be described with reference to FIGS. On the upper and lower portions of the central seedling platform 16b, a gate-shaped central upper seedling platform frame 39 and a central lower seedling platform frame 40 are respectively provided on ribs 38 on both sides of the rear surface of the central seedling platform 16b. It stands upright through the holders 53. From the center of the central upper seedling stand frame 39 and the central lower seedling stand frame 40, central frames 39a and 39a project,
b The rib 38 at the center of the rear surface and the frame holder 53
53 are connected. The central frame 39a
A pipe-shaped member protrudes downward from a substantially central portion, is connected to a portion corresponding to the upper seedling stand frame 39 in the central portion, and a vertical frame 43 is formed.

Similarly, on the upper and lower portions of the divided seedling mounting table 16a, a gate-shaped upper divided seedling frame 41 and a lower divided frame 42 of the divided section are mounted on ribs 38 on both sides of the rear surface of the divided seedling mounting table 16a. Each is erected through the frame holders 53. From the center of the divided part upper seedling stand frame 41 and the divided part lower seedling stand frame 42, the central frame 4
1a and 41a protrude, and the front ends thereof are provided with ribs 38 at the rear center of the divided seedling mounting table 16a and frame holders 53 and 53, respectively.
Connected through. The pipe-shaped members protrude downward from a total of two locations, approximately the central portion of the central frame 41a and the central portion of the distal end portion from the bent portion on the outer side of the divided upper seedling frame 41, and each of the divided portions of the divided lower seedling frame 42 A vertical frame 43 is formed by being connected to a portion corresponding to the upper seedling stand frame 41.

The main body side seedling table 16b and the divided seedling table 16
a, the upper and lower seedling frames 3 at the center of the center seedling mounting table 16b.
At the bent portions on both sides in the left-right direction of the 9.40, the center-side rotating fulcrum frames 44, which are pipe-shaped members, are fixed so as to connect the upper and lower bent portions. Similarly, the divided part upper and lower seedling stand frames 41 and 42 of the divided seedling placing stands 16a and 16a
Of the pipe-shaped member so as to connect the upper and lower bent portions at the bent portion on the inner side in the left-right direction.
・ 45 are fixed. The side seedling mounting table 16c
There is a reinforcement joint 101 that becomes a reinforcement member in the left and right direction.
101 is provided. One end of the reinforcing joint 101 is pivotally supported on the upper portion of the pivot support frame 44, and the other end (outer end) of the reinforcing joint 101 is bent toward the rib 38, and is fixed to the upper surface of the rib 38. 16c is improved to prevent torsion and the like.

An upper rotary cam body 46 and a lower rotary cam body 47 as cam members are provided on the upper and lower portions of the center-side rotary fulcrum frame 44, respectively. The body 48 and the lower rotary cam body 49 are fitted. The upper rotary cam bodies 46 and 48 are connected to each other by a gate-shaped upper folding arm 50, and the lower rotary cam bodies 47 and 49
Are connected by a lower folding arm 51 having a gate shape, so that the center-side pivoting fulcrum frame 44 and the split-side pivoting fulcrum frame 45 are connected.
0.5 is rotated about the center-side rotation fulcrum frame 44 as a fulcrum, so that the divided seedling mounting table 16a can be folded and positioned substantially parallel above the main body-side seedling mounting table 16b.

That is, an upper folding arm 50 and a lower folding arm 51 for increasing the front-rear width of the folding mechanism 37 of the seedling mounting table 16, and a rear surface of the seedling mounting table 16 instead of the front of the seedling mounting table 16 where the fertilizer application section 36 is disposed. The ribs 38 arranged on the
Pivotally supported by pivots 44 and 45 supported by central upper and lower seedling frames 39 and 40 and splitting upper and lower seedling frames 41 and 42, which are fixed to the base. Fertilizing hose 94 is located between fertilizing section 36
The space in which to place is maintained. In addition, the divided seedling mounting table 1
6a is folded back, and does not interfere with the fertilizer application part 36 and the rear wheels 8.8.

Next, the upward turning mechanism of the side bumper 70 of the present invention will be described. A base pipe 71 of the side bumper 70 is fixed to the outer side surface of the planting case 20, and the base pipe 71 is projected outward in the left-right direction, and a rotation pipe 73 is disposed at an end of the base pipe 71. . As shown in FIGS. 5 to 7, the base pipe 71 has a pivot body 72 fixed to an outer end of the base pipe 71, and is pivotally supported using the pivot body 72. As shown in FIG. 7, the pivot 72 includes an upper plate 72a and a lower plate 72.
b and a side plate 72c are formed in a U-shape when viewed from the rear, and the front side portions of the upper plate 72a and the lower plate 72b are projected forward (toward the back side with respect to the paper surface) from the side plate 72c. A base pipe 71 is sandwiched between the plate 72a and the lower plate 72b. That is, the base pipe 71 is sandwiched between the front part (the lower part on the paper) of the pivot 72 shown in FIGS. 5 and 6, and the rear part of the pivot 72 is behind the base pipe 71 (the upper part on the paper).
It is projected to. A pivot pin 74 having an axis in the up-down direction is pivotally supported at the rear of a pivot body 72 projecting rearward from the base pipe 71.

An insertion hole 71a having a vertical axis is opened in the base pipe 71 in front of the position where the pivot pin 74 is pivotally supported, and the insertion hole 71a and the hole axis are also formed in the pivot body 72. A matching insertion hole 72d is opened, and a lock pin 75 is slidably inserted into the insertion holes 71a and 72d.

A fixed cylinder 76 is fitted to the base of the rotating pipe 73 of the side bumper 70.
The stays 77 project from the upper and lower portions of the inside. A pivot body 72 is sandwiched between the upper and lower stays 77, and the stays 77 are pivotally supported by pivot pins 74 pivotally supported by the pivot body 72. Further, the stay 77
The guide groove 77a has an arc shape centered on the pivot pin 74.
Are formed, and guide grooves 77 are formed at both ends of the guide groove 77a.
Stop holes 77b, 77b having a diameter larger than the groove width of a are opened. The guide groove 77a or the stop hole 77
The lock pin 75 is inserted into b.

The lock pin 75 has an annular handle portion 81 fixedly provided at the upper end thereof, and stepped portions 75a, 75a for reducing the diameter of the pin are formed at two positions above and below the lock pin 75.
It is a stepped pin. The pin diameter of the lock pin 75 is substantially the same as the diameter of the stop hole 77b opened in the stay 77, and the lock position is set. The pin diameter of the stepped portion 75a is smaller than the pin diameter at the lock position. It is loosely fitted inside and is in the release position. A triangular pyramid portion 75b is formed in the upper and lower portions of the stepped portion 75a, and the ridge line of the triangular pyramid portion 75b is tapered to facilitate insertion into the stop hole 77b. The interval between the upper and lower steps 75 a is equal to the interval between the upper and lower stays 77 fixed to the rotating pipe 73. Further, the lower end of the lock pin 75 is protruded upward from the lower stay 77, and the lock pin 7 protrudes downward.
A washer 78 is loosely fitted on the outer peripheral surface of the middle part of the lock 5, and a washer 79 is fixedly provided at the lower end of the lock pin 75.
The compression spring 80
Is wound.

Therefore, the upper washer 78 is brought into contact with the lower surface of the stay 77 by the urging force of the compression spring 80, the lower washer 79 is urged downward, and the lock pin 75 is moved downward. At this time, as shown in FIG. 7, the rotating pipe 73 is rotated in the outward or inward direction, and the stopper holes 77b at both ends of the guide groove 77a formed in the stay 77 are formed.
77b is an insertion hole 71a of the pivot body 72 and the base pipe 71.
When it is aligned with the axis of 72d, the lock pin 7
The lock position of No. 5 is inserted into the stop hole 77b, the lock pin 75 and the stop hole 77b are engaged, and a lock state in which the stay 77 is prevented from rotating about the pivot pin 74 is established.

In order to rotate the rotation pipe 73, the handle 81 at the upper end of the lock pin 75 is
When the lock pin 75 is pulled upward against the urging force, the lock pin 75 slides upward, and the stepped portion 75a having a reduced pin diameter is guided into the stop hole 77b of the stay 77, and the stay 77 and the lock pin 75 Is disengaged, and the stay 77 is released so that the stay 77 is rotatable about the pivot pin 74. When the rotating pipe 73 is rotated, as shown in FIG.
7 is provided with a stepped portion 75a of the lock pin 75 in the guide groove 77a.
And the rotary pipe 73 can be rotated. Then, the rotating pipe 73 is rotated to the outer end or the inner end, so that the pivots 72 and the shaft cores of the insertion holes 71 a and 72 d of the base pipe 71 and the stopper hole 77 b are formed.
When the shaft center of the stepped portion 75a is aligned, the lock pin 75 is urged downward in accordance with the urging force of the compression spring 80, and is smoothly stopped by the taper of the triangular pyramid portion 75b of the stepped portion 75a.
The lock pin 75 is inserted into the pin b, the stay 77 and the lock pin 75 are engaged, and the rotation of the rotation pipe 73 is locked.

In this embodiment, the arc of the guide groove 77a formed in the stay 77 is formed at 180 °, and the rotary pipe 73 of the side bumper 70 is rotated by 180 °. The arc shape is not limited to 180 °, but may be set to 90 ° to lock the rotating pipe 73 at a position facing backward. Stop holes 77b and 77 are provided at both ends of the guide groove 77a.
Although b is opened, a configuration may be adopted in which a stop hole 77b is opened at an intermediate position to select a position where the rotary pipe 73 is locked.

[0027]

As described above, the present invention has the following advantages. That is, as described in claim 1, even if the fertilizer application section is disposed in front of the seedling mounting table of the rice transplanter and the space in front of the seedling mounting table is complicated, a plurality of seedling mounting tables are provided. The folding mechanism that folds the divided seedling rests on the left and right sides of the seedling rest is arranged at the rear of the seedling rest, so that the space for disposing the fertilizing hose of the fertilizing part arranged at the front of the seedling rest is not limited. . In addition, the divided seedling platform is folded up above the fixed-side seedling platform at the center of the fuselage, and when the divided seedling platform is folded, it interferes with the fertilizer and rear wheels located in front of the seedling platform. Can be folded without doing.

Further, even in the front lower position of the seedling mounting table where a plurality of members are complicatedly inserted and the operation is difficult, the side bumper can be rotated by a simple operation of sliding the guide pin. Since the stay of the rotating pipe on the side is switched between the locked state where the stay is engaged with the guide pin and the unlocked state where the stay is disengaged from the stay, it does not give a complicated feeling to the operation, and The operation of folding the side bumper can be performed. Further, since the pins are not configured to be pulled out, problems such as the pins falling out due to vibration during work and the pins being lost are eliminated.

[Brief description of the drawings]

FIG. 1 is an overall side view of a rice transplanter having a seedling table folding mechanism.

FIG. 2 is a plan view of the same.

FIG. 3 is a diagram illustrating a folded state of a seedling mounting table.

FIG. 4 is a plan view of the same.

FIG. 5 is a plan view, partly in section, showing a locking configuration for turning the side bumper.

FIG. 6 is a plan view and a partial sectional view of the same.

FIG. 7 is a partial sectional view of the same rear view.

FIG. 8 is a plan view showing wiring of a harness connected to a movable fertilizer application hopper during operation.

FIG. 9 is a plan view showing wiring of a harness when the movable fertilizer application hopper is folded.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 traveling vehicle 8 rear wheel 15 planting section 16 seedling mounting table 25 fertilizing hose 36 fertilizing section 16a divided seedling mounting table 16b central seedling mounting table 16c side seedling mounting table 37 folding mechanism 70 side bumper 71 base pipe 73 rotating pipe 75 Guide pin 75a Stepped portion 77 Stay 77a Guide groove 77b Stop hole

Claims (2)

[Claims] 1. A riding type rice transplanter in which a planting section for planting a plurality of streaks is disposed at a rear portion of a traveling vehicle, and a fertilizing section is disposed in front of a seedling mounting table of the planting section. Divide the fixed-side seedling platform on the center side and the multiple rows on the left and right ends into divided seedling platforms, and connect the rear side of the fixed-side seedling platform and the rear side of the split-seedling platform with a folding mechanism. Without interfering with the wheels
A folding configuration of a rice transplanter, wherein a divided seedling mounting table is folded above a fixed seedling mounting table. 2. A seedling mounting device that folds a plurality of strips at both left and right ends of a seedling mounting table toward a center of the machine body by using a folding mechanism. In the rice transplanter that pivotally supports the portion so that the left and right width of the body can be narrowed, the side bumper is divided into a fixed side base pipe and a rotating side rotating pipe,
A step for pivotally supporting a stay of a rotating pipe on a base pipe, and perforating an arc-shaped guide groove and a stop hole having a diameter larger than the groove width on the guide groove, so that the stay is slidably and loosely fitted to the base pipe. When the guide pin with the lock engages with the stopper hole and locks it, slides the guide pin, and positions the step portion of the guide pin in the stopper hole, the lock is released and the rotating pipe rotates. The folding configuration of a rice transplanter characterized by the following.