JP3617900B2 - Folding configuration of rice transplanter - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention is, for example, includes a seedling mounting table and planting claw In the continuous rice transplanter performing seedling planting work relates to rice transplanters having a mechanism for reducing the left and right entire width of the seedling mounting table and side bumpers .
[0002]
[Prior art]
Conventionally, in a multi-row seedling stage, means for reducing the full width of the seedling stage by folding the seedling stage for one line on the left and right outermost ends approximately 90 ° forward is known. .
In addition, the lower rail that slidably mounts the lower part of the seedling table and the left and right ends of the side bumper that protects the lower part of the seedling table are pivotally supported. The left and right tanks are supported so as to be pivotable backward, and the left and right widths of the fuselage are reduced.
[0003]
[Problems to be solved by the invention]
However, when the conventional seedling stage for the left and right outermost ends is folded forward, the left and right width of the seedling stage is wider than the vehicle width of the traveling vehicle body. It was necessary to narrow.
For this purpose, a technique has been proposed to fold down the left and right widths by folding multiple seedling platforms on both the left and right sides of the multi-row seedling platform. It was arrange | positioned and it became the structure which cannot fold forward the multiple seedling mounting stand of right and left both sides forward.
In addition, the side bumper that narrows the left and right width by rotating the end part is regulated by inserting a lock pin, and the position of the side bumper is fixed by inserting the snap pin. In order to rotate, it is necessary to remove and remove the two pins, and the pins are located in the lower part of the front surface of the seedling stand where it is difficult to operate, and it is difficult to insert and remove these pins. It was.
Further, in the configuration in which the pin can be removed, there is a possibility that the pin may be lost due to vibration during operation.
[0004]
[Means for Solving the Problems]
The problems to be solved by the present invention are as described above. Next, means for solving the problems will be described.
In Claim 1, it has the seedling mounting apparatus which folds the left and right both ends of the seedling mounting stand 16 to the machine body center side using a folding mechanism, the side bumper 70 protrudes sideward from the planting part side part, In the rice transplanter that pivotally supports the middle part of the bumper 70 so that it can be bent and narrows the left-right width of the machine body, the side bumper 70 is divided into a base pipe 71 on the fixed side and a rotary pipe 73 on the rotary side, A pivot 72 provided on the base pipe 71 side and a stay 77 provided on the rotating pipe 73 are pivotally supported by a pivot pin 74, and an insertion hole 72 d is opened in the pivot 72. An arc-shaped guide groove 77a and a stop hole 77b having a diameter larger than the groove width are drilled in the guide groove 77a, and a large-diameter lock is slidable between the insertion hole 72d and the stop hole 77b. Position and guide groove 77a passes When a lock pin 75 having a stepped portion 75a having a thin diameter is inserted between the insertion hole 72d and the stop hole 77b and the lock position of the lock pin 75 is engaged with the stop hole 77b, the lock pin 75 is locked. When the pin 75 is slid and the stepped portion 75a is slid to the position of the guide groove 77a, the lock is released, and the rotating pipe 73 is rotatable .
According to claim 2, in the folding structure of the rice transplanter according to claim 1, the compression spring 80 is wound around the outer peripheral surface of the lock pin 75, and the lock position of the lock pin 75 is inserted into the stop hole 77b and locked. It is biased by the compression spring 80 in the direction of the state .
[0005]
DETAILED DESCRIPTION OF THE INVENTION
Next, an embodiment of the present invention will be described.
1 is an overall side view of a rice transplanter equipped with a folding mechanism for a seedling stage, FIG. 2 is a plan view, FIG. 3 is a diagram showing a folded state of the seedling stage, FIG. 4 is a plan view, and FIG. FIG. 6 is a plan view, a partial cross-sectional view, FIG. 7 is also a rear-part partial cross-sectional view, and FIG. 8 is connected to a movable fertilizer hopper during operation. FIG. 9 is a plan view showing wiring of the harness when folded on the movable fertilizer hopper.
[0006]
First, a passenger rice transplanter will be described from FIG. 1 and FIG.
An engine 2 is mounted above the front portion of the body frame 3 of the traveling vehicle 1 on which an operator or the like is boarded, and the front wheel 6 is supported in front of the transmission case 4 via the front axle case 5. A rear axle case 7 is connected to the rear part, and the rear wheel 8 is supported by the rear axle case 7.
Further, preliminary seedling platforms 10 and 10 are disposed on both sides of the bonnet 9 covering the engine 2, and the transmission case 4 and the like are covered with a vehicle body cover 12 on which an operator or the like gets on via step 11, and the vehicle body A driver's seat 13 is attached to the upper part of the cover 12, and a steering handle 14 is disposed at the rear of the bonnet 9 in front of the driver's seat 13.
[0007]
The planting part 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 supported by the planting case 20 so as to be slidable in the left-right reciprocating manner, and the rotary case 21 rotating at a constant speed in one direction is configured to be rotatable on the planting case 20.
A pair of claw cases 22 and 22 are arranged at symmetrical positions around the rotation axis of the rotary case 21, and planting claws 17 and 17 are fixedly attached to the tips of the claw cases 22 and 22.
Further, a unit clutch lever 91 is fixed to the front upper portion of the seedling mount 16 so as to stop the drive to the claw cases 22 and 22 and the planting claws 17 and 17 to stop the hooks.
[0008]
Further, a support frame 24 is provided at the front portion of the planting case 20 via a rolling fulcrum shaft 23, and the support frame 24 is disposed at the rear portion of the traveling vehicle 1 via a link mechanism 27 including a top link 25 and a lower link 26. And an elevating cylinder 28 for raising and lowering the planting part 15 is connected to the lower link 26 via the link mechanism 27.
Then, at the same time as the front wheels 6 and 6 and the rear wheels 8 and 8 are driven and moved, one seedling is taken out from the seedling mount 16 that can reciprocate to the left and right by the planting claws 17 and continuously seedlings. It is configured to perform planting work.
[0009]
Further, a side bumper 70 protrudes laterally from the outer side surface of the planting case 20 at the left and right end portions, and the rear end portion of the side bumper 70 is bent rearward to protect the lower portion of the seedling mounting table 16.
Further, in the driving section where the driver's seat 13 and the like are installed, there are a traveling speed change lever 29, a planting elevating / working speed subshifting lever 30, a planting sensitivity adjusting lever 31, a main clutch pedal 32, left and right brake pedals 33, 33. Is arranged.
A leveling center float 34 and leveling side floats 35 are disposed at the bottom of the planting portion 15, and a fertilizer portion 36 for eight strips is disposed behind the driver seat 13.
[0010]
The fertilizer hoppers for eight strips of the fertilizer 36 are arranged in series in the left-right direction, and six fixed fertilizer hoppers 85, 85,... Movable fertilizer hoppers 85 'and 85' are arranged.
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 on a pivot pin 87 pivotally supported on the lower portion of the outer fixed fertilizer hopper 85, and the movable fertilizer hopper 85 'is integrally movable with the arm 86 around the pivot pin 87. Is rotated backward.
[0011]
In addition, a lever 90 for operating a fertilizer clutch of a feeding device (not shown) of the movable fertilizer hopper 85 'is disposed on the front surface of the movable fertilizer hopper 85', and the operation of the unit clutch lever 91 for fastening the bar is performed. A unit clutch wire 92 interlocking with the detachable connection is detachably connected. When the movable fertilizer hopper 85 ′ is rotated backward, the unit clutch wire 92 is disconnected.
[0012]
Moreover, the remaining amount detection sensor S which detects the residual amount of the fertilizer to store is arrange | positioned inside each fertilization hopper 85 * 85 .... A harness 88 connected to the remaining amount detection sensor S is wired in front of the fertilizer 36, and a harness 88 'connected to the movable fertilizer hopper 85' is wired so as to bypass the moving fertilizer hopper 85 '. Has been.
That is, a hook 89 is fixedly provided on the outer side of the lower end of the fixed fertilizer hopper 85 at the end of the fixed fertilizer hopper 85, 85, and protrudes laterally from the side surface of the fixed fertilizer hopper 85 at the end. The harness 88 ′ is passed through the hook 89 from the front of the fixed fertilizer hopper 85 disposed rearward from the front of the fixed fertilizer hopper 85 so that the middle portion of the harness 88 ′ is locked. ing.
The middle part of the harness 88 ′ is locked to the hook 89, the front end of the harness 88 ′ is extended to the front side, and is connected to the remaining amount detection sensor S in the movable fertilizer hopper 85 ′.
[0013]
Therefore, when the movable fertilizer hopper 85 ′ is rotated backward, the tip side from the middle portion of the harness 88 ′ hooked to the hook 89 is moved backward along with the rotation of the movable fertilizer hopper 85 ′. This eliminates the need for the harness 88 'to have a slack beforehand.
[0014]
Next, a configuration for folding a plurality of strips on both ends of the multi-row seedling mounting table 16 will be described.
As shown in FIGS. 1 to 4, the seedling mounting table 16 is divided into two seedling mounting tables at the left and right outermost ends to form divided seedling mounting tables 16 a and 16 a. The two seedling mounting platforms are the central seedling mounting platform 16b, and the single seedling mounting platforms arranged on both sides thereof are the side seedling mounting platforms 16c and 16c.
A parallel folding mechanism 37 is provided above the side seedling platforms 16c and 16c, and the divided seedling platforms 16a and 16a and the side seedling platforms 16c and 16c are connected to each other via the parallel folding mechanism 37. The divided seedling mounting tables 16a and 16a are configured to be foldable substantially parallel above the partial seedling mounting table 16b.
[0015]
The folding mechanism 37 will be described with reference to FIGS.
At the top and bottom of the center seedling stage 16b, a gate-shaped center upper seedling frame 39 and a center lower seedling frame 40 are respectively framed on the ribs 38 and 38 on both sides of the rear surface of the center seedling stage 16b. It is erected through holders 53 and 53.
Center frames 39a and 39a protrude from the center of the central upper seedling frame 39 and the central lower seedling frame 40, and the tips thereof are provided through the rib 38 at the center of the rear surface of the central seedling mounting table 16b and the frame holders 53 and 53, respectively. Connected.
A pipe-like member protrudes downward from a substantially central portion of the central frame 39a and is connected to a location corresponding to the central upper seedling stand frame 39 to form a vertical frame 43.
[0016]
Similarly, on the upper and lower parts of the divided seedling stage 16a, a gate-shaped divided part upper seedling frame 41 and a divided part lower seedling frame 42 are respectively provided on the ribs 38 and 38 on both sides of the rear surface of the divided seedling stage 16a. It is erected through holders 53 and 53.
Center frames 41a and 41a project from the center of the divided part upper seedling frame 41 and the divided part lower seedling frame 42, and the leading ends thereof pass through the rib 38 at the center of the rear surface of the divided seedling mounting stage 16a and the frame holders 53 and 53, respectively. It is connected.
Pipe-shaped members protrude downward from a total of two locations at the substantially central portion of the central frame 41a and the front end portion of the bent portion outside the divided portion upper seedling frame 41, and the divided portion lower seedling frame 42 respectively. The vertical frames 43 and 43 are formed by being connected to portions corresponding to the divided part upper seedling stand frame 41.
[0017]
In the one-side-width side seedling stage 16c, 16c portion located between the main body side seedling stage 16b and the divided seedling stage 16a, the left and right sides of the central upper and lower seedling frames 39, 40 of the central part seedling stage 16b At the bent portions on both sides in the direction, center-side rotation fulcrum frames 44 and 44 that are pipe-like members are fixed so as to connect the upper and lower bent portions.
Similarly, the split-side rotation fulcrum frames 45 and 45 of the pipe-like member are connected so as to connect the upper and lower bent portions at the bent portions on the inner sides in the left and right direction of the divided upper and lower seedling frames 41 and 42 of the divided seedling platforms 16a and 16a. Is fixed.
Reinforcing joints 101 and 101 serving as reinforcing members are disposed on the side seedling mounting table 16c in the left-right direction. One end of the reinforcing joint 101 is pivotally supported on the upper part of the pivot fulcrum frame 44, the other end (outer end portion) of the reinforcing joint 101 is bent toward the rib 38, and fixed on the upper surface of the rib 38. The rigidity of 16c is improved, and the generation | occurrence | production of a twist etc. is prevented.
[0018]
An upper rotating cam body 46 and a lower rotating cam body 47, which are cam members, are respectively provided at the upper and lower portions of the center side rotating fulcrum frame 44, and an upper rotating cam body 48 is provided at the upper and lower portions of the divided side rotating fulcrum frame 45, respectively. The lower rotating cam body 49 is fitted.
The upper rotating cam bodies 46 and 48 are connected by a gate-shaped upper folding arm 50, and the lower rotating cam bodies 47 and 49 are connected by a gate-shaped lower folding arm 51, whereby the center-side rotation fulcrum frame 44 and The split side rotation fulcrum frame 45 is connected.
Thus, the upper and lower folding arms 50 and 51 are rotated with the center side rotation fulcrum frame 44 as a fulcrum, and the divided seedling stage 16a is folded and positioned substantially parallel above the main body side seedling stage 16b. It is possible.
[0019]
That is, the arm 50 and the lower folding arm 51 folded over a wider longitudinal width of folding mechanism 37 of the seedlings the platform 16, rather than in front of the seedling mounting table 16 to place the fertilizer portion 36, arranged on the rear seedling mounting table 16 Are pivotally supported by rotating fulcrum frames 44 and 45 that are pivotally supported by central upper and lower seedling frames 39 and 40 and split upper and lower seedling frames 41 and 42 fixed to the ribs 38 and 38. ing.
Thereby, the space which arrange | positions the fertilizer hose 94 in the position between the seedling stand 16 front surface and the fertilizer part 36 is maintained.
Further, the divided seedling mounting table 16a is folded rearward and does not interfere with the fertilizer 36 or the rear wheels 8 and 8.
[0020]
Next, the upward rotation mechanism of the side bumper 70 of the present invention will be described.
A base pipe 71 of a side bumper 70 is fixed on the outer side surface of the planting case 20, the base pipe 71 protrudes outward in the left-right direction, and a rotating pipe 73 is disposed at the end of the base pipe 71. Yes. As shown in FIGS. 5 to 7, the base pipe 71 has a pivotal support 72 fixed to the outer end of the base pipe 71, and is pivotally supported using the pivotal support 72.
As shown in FIG. 7, the pivotal support 72 is formed in a “U” shape in a rear view made up of an upper plate 72a, a lower plate 72b, and a side plate 72c, and the front side of the upper plate 72a and the lower plate 72b. The portion projects forward from the side plate 72c (backward direction with respect to the paper surface), and the base pipe 71 is sandwiched between the upper plate 72a and the lower plate 72b.
That is, the base pipe 71 is sandwiched between the front part (downward on the paper surface) of the pivotal support body 72 shown in FIGS. 5 and 6, and the rear part of the pivotal body 72 projects rearward (upward on the paper surface) from the base pipe 71. Has been. A pivot pin 74 having an axial center in the vertical direction is pivotally supported at the rear portion of the pivot body 72 protruding rearward from the base pipe 71.
[0021]
Further, an insertion hole 71a having an axial center in the vertical direction 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 aligned in the pivot body 72. The insertion hole 72d is opened, and the lock pin 75 is slidably inserted into the insertion holes 71a and 72d.
[0022]
A fixed cylinder 76 is fitted to the base of the rotating pipe 73 of the side bumper 70, and stays 77 and 77 are projected inward from the upper and lower portions of the fixed cylinder 76. A pivot 72 is sandwiched between the upper and lower stays 77 and 77, and the stays 77 and 77 are pivotally supported by pivot pins 74 pivotally supported on the pivot 72.
Further, the stay 77 has a circular arc guide groove 77a centered on the pivot pin 74, and stop holes 77b and 77b having diameters larger than the groove width of the guide groove 77a are formed at both ends of the guide groove 77a. It is open. A lock pin 75 is inserted into the guide groove 77a or the stop hole 77b.
[0023]
The lock pin 75 is a stepped pin in which an annular handle portion 81 is fixed to the upper end portion and stepped portions 75a and 75a are formed at two locations above and below the lock pin 75 to reduce the pin diameter. .
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 is set to the lock position, the pin diameter of the stepped portion 75a is made smaller than the pin diameter of the lock position, and the groove of the guide groove 77a. It is loosely fitted in the release position. A triangular pyramid portion 75b is formed on the upper and lower portions of the stepped portion 75a, and the ridgeline of the triangular pyramid portion 75b is tapered to facilitate insertion into the stop hole 77b.
Further, the interval between the upper and lower stepped portions 75 a is formed to be equal to the interval between the upper and lower stays 77 fixed to the rotating pipe 73. Further, the lower end portion of the lock pin 75 protrudes upward from the lower stay 77, and a washer 78 is loosely fitted on the outer peripheral surface of the lock pin 75 protruding downward, and the washer 79 is fitted to the lower end portion of the lock pin 75. And a compression spring 80 is wound around the outer peripheral surface of the lock pin 75 located between the upper and lower washers 78 and 79.
[0024]
Therefore, the upper washer 78 is brought into contact with the lower surface of the stay 77 by the biasing force of the compression spring 80, the lower washer 79 is biased downward, and the lock pin 75 is moved downward. At this time, as shown in FIG. 7, the rotating pipe 73 is rotated outward or inward, and the stop holes 77b and 77b at both ends of the guide groove 77a formed in the stay 77 are provided with the pivot 72 and the base pipe. 71, the locking position of the lock pin 75 is inserted into the stop hole 77b, the lock pin 75 and the stop hole 77b are engaged, and the stay 77 is A locked state in which rotation about the pivot pin 74 is restricted is set.
[0025]
In order to rotate the rotation pipe 73, when the handle portion 81 at the upper end of the lock pin 75 is pulled upward against the urging force of the compression spring 80, the lock pin 75 slides upward, and the stay 77. A stepped portion 75a having a reduced pin diameter is guided into the stop hole 77b, the engagement between the stay 77 and the lock pin 75 is disengaged, and the stay 77 is pivoted about the pivot pin 74; Is done.
When the rotating pipe 73 is rotated, as shown in FIG. 6, the rotating pipe 73 is slid within the guide groove 77 a of the stay 77 without being engaged with the stepped portion 75 a of the lock pin 75. Can be moved.
Then, when the rotating pipe 73 is rotated to the outer end or the inner end, the axial centers of the pivot 72 and the insertion holes 71a and 72d of the base pipe 71 coincide with the axial centers of the stopper holes 77b. The lock pin 75 is urged downward according to the urging force of the compression spring 80, and the lock pin 75 is smoothly inserted into the stop hole 77b by the taper of the triangular pyramid portion 75b of the stepped portion 75a. The pin 75 is engaged, and the rotation of the rotation pipe 73 is fixed.
[0026]
In this embodiment, the arc of the guide groove 77a formed in the stay 77 is formed at 180 ° and the rotating pipe 73 of the side bumper 70 is rotated by 180 °, but the arc of the guide groove 77a is formed. The shape is not limited to 180 °, but can be set to 90 ° so that the rotating pipe 73 is in a locked state at a position facing backward. Stop holes 77b and 77b are opened at both ends of the guide groove 77a. However, the stop hole 77b may be opened at an intermediate position so that the position where the rotating pipe 73 is locked can be selected. it can.
[0027]
【The invention's effect】
Since the present invention is configured as described above, the following effects can be obtained.
Since it comprised like Claim 1, a plurality of members enter complicatedly, and it is the rotation side of a side bumper by the simple operation which slides a guide pin also in the front lower part position of a seedling stand which is difficult to operate. Switching between the locked state where the stay of the rotating pipe is engaged with the guide pin and the unlocked state where the stay is disengaged from the stay is eliminated. Can be folded. Further, since the pin is not configured to be pulled out, there is no inconvenience such as the pin falling off due to vibration during work and losing the pin.
[0028]
According to the second aspect of the present invention, the pivot pipe 73 is pivoted to the outer end or the inner end, so that the shafts of the pivotal support body 72, the shaft cores of the insertion holes 71a and 72d of the base pipe 71, and the stop hole 77b. When the core is aligned, the lock pin 75 is urged downward according to the urging force of the compression spring 80, the lock pin 75 is automatically and smoothly inserted into the stop hole 77b, and the stay 77 and the lock pin 75 are engaged. As a result, the rotation of the rotation pipe 73 is fixed.
[Brief description of the drawings]
FIG. 1 is an overall side view of a rice transplanter equipped with a seedling stage folding mechanism.
FIG. 2 is a plan view of the same.
FIG. 3 is a diagram showing a folded state of the seedling stage.
FIG. 4 is a plan view of the same.
FIG. 5 is a partial cross-sectional view of a plan view showing a rotation lock configuration of a side bumper.
FIG. 6 is a partial cross-sectional view of the same plan view.
FIG. 7 is a partially sectional view of the rear view.
FIG. 8 is a plan view showing wiring of a harness connected to a movable fertilizer hopper during work.
FIG. 9 is a plan view showing the wiring of the harness when folded to the movable fertilizer hopper.
[Explanation of symbols]
1 traveling vehicle 8 rear wheel 15 planting part 16 seedling stage 25 fertilizer hose 36 fertilizer part 16a split seedling stage 16b central seedling stage 16c side seedling stage 37 folding mechanism 70 side bumper 71 base pipe 73 rotating pipe 75 Lock pin 75a Stepped portion 77 Stay 77a Guide groove 77b Stop hole

Claims (2)

It has a seedling mounting device that folds the left and right ends of the seedling mounting table 16 to the center side of the machine body using a folding mechanism. The side bumper 70 protrudes from the side of the planting part to the side, and the middle part of the side bumper 70 In a rice transplanter that pivots so that it can be bent and the width of the aircraft can be reduced,
The side bumper 70 is divided into a base pipe 71 on the fixed side and a rotating pipe 73 on the rotating side, and a support 72 provided on the base pipe 71 side and a stay 77 provided on the rotating pipe 73 side. The support pin 74 is pivotally supported, an insertion hole 72d is opened in the pivot support 72, and the stay 77 has an arcuate guide groove 77a and a stop having a diameter larger than the groove width on the guide groove 77a. Drill holes 77b,
A lock pin 75 having a large-diameter lock position capable of sliding through the insertion hole 72d and the stop hole 77b and a thin diameter stepped portion 75a through which the guide groove 77a can pass is formed into the insertion hole 72d and the stop hole 77b. When the locking position of the lock pin 75 is engaged with the stop hole 77b, the lock pin 75 is slid and the stepped portion 75a is slid to the position of the guide groove 77a. The folding structure of the rice transplanter, which is in the unlocked state, and the rotating pipe 73 is rotatable . In the folding structure of the rice transplanter according to claim 1, the compression spring 80 is wound around the outer peripheral surface of the lock pin 75, and the lock position of the lock pin 75 is inserted into the stop hole 77 b in the locked state. A folding structure of a rice transplanter, which is biased by the compression spring 80 .

Images